WO2017191090A1 - Device and method for cutting a profiled section and cutting blade - Google Patents
Device and method for cutting a profiled section and cutting blade Download PDFInfo
- Publication number
- WO2017191090A1 WO2017191090A1 PCT/EP2017/060335 EP2017060335W WO2017191090A1 WO 2017191090 A1 WO2017191090 A1 WO 2017191090A1 EP 2017060335 W EP2017060335 W EP 2017060335W WO 2017191090 A1 WO2017191090 A1 WO 2017191090A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transverse
- cutting blade
- incision
- cutting
- upper face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/003—Cutting work characterised by the nature of the cut made; Apparatus therefor specially adapted for cutting rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/08—Means for treating work or cutting member to facilitate cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
- B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/01—Means for holding or positioning work
- B26D7/018—Holding the work by suction
Definitions
- the present invention relates to the field of tire manufacturing.
- the present invention relates to the field of cross section of prefabricated profiles in a raw elastomeric mixture, that is to say non-crosslinked, for obtaining profile portions from which are made the treads of future tires.
- prefabricated sections are placed flat and cross sections are made at room temperature by a wedge-shaped cutting blade, rigid and thin, reciprocated in the direction of the sharp edge and an advance movement in the direction of the thickness of the product.
- the developed length of the profile portions, obtained between two cuts, corresponds to the length of winding on a manufacturing drum, or on a finishing shape, or on a preformed bandage.
- the cuts are made obliquely so that, after winding a profile portion onto a receiving shape, the end faces of this portion overlap at an angle to obtain an optimal weld of these end faces, one on the other.
- the feed movement of the cutting blade is inclined with respect to the profile with a determined angle.
- the speeds, amplitudes and frequencies of the two cutting and feed movements are adapted to the nature of the elastomeric mixture of the profile.
- the face of the The cutting blade on the side of the profile generally has a low clearance angle to reduce the friction of the cutting blade on the corresponding face of the incision. Nevertheless, this draft angle increases the friction of the other face of the cutting blade on the other face of the incision.
- the present invention aims to improve the cutting conditions of a profile.
- a device for cutting a profile of an elastic or viscoelastic material for obtaining profile portions intended in particular for the manufacture of tire casings.
- the cutting device comprises a table having an upper receiving surface adapted to receive the profile, in a longitudinal direction; a transverse cutting blade inclined with respect to said upper receiving surface and having a transverse cutting edge and, from this cutting edge, a lower face turned towards the upper receiving surface and an upper face; drive means for imparting reciprocating transverse movement and driving means to the cutting blade for imparting to the cutting blade an advance movement in a direction inclined with respect to the receiving surface of the table, in order to making an inclined incision having a lower side of the table side and an upper face; and spacing means disposed above the upper face of the cutting blade, adapted to penetrate in the incision and keeping at least a portion of said upper face of the incision relatively to the cutting blade.
- the spacing means may comprise a spacer blade and a drive means adapted to print a forward movement of the spacer blade in the direction of advance of the cutting blade.
- the drive means of the cutting blade and the spacer blade can be synchronized.
- the spacing means may comprise an intermediate mat interposed between the cutting blade and the upper face of the incision.
- the spacing means may comprise means for driving said intermediate belt, adapted to immobilize the intermediate belt with respect to the upper face of the incision.
- the cutting blade may comprise an adjoining pin at its cutting edge and a recessed surface joining an upper surface of the pin with a heel opposite the cutting edge, the spacer extending at least portion above said recessed surface of the cutting blade.
- the spacing means may have an upper face, at least one end portion, adjacent to said pin, is aligned with said apex surface of the barb.
- the method includes: placing the profile on an upper receiving surface of a table; printing a reciprocating transversal movement and an advance movement, in a direction inclined relative to said upper receiving surface, to a cutting blade having a cutting edge cutting the profile and having, from this cutting edge, a lower face on the side of said receiving surface and an upper face, so as to make an incision through the profile and transverse thereto, this inclined incision having a lower face on the side of said lower face of the cutting blade and an upper face on the side of the upper face of the cutting blade.
- said lower face of the cutting blade is, at least in part, at a distance from said lower face of the incision.
- the method further comprises: introducing into the incision a means for spacing between said upper face of the cutting blade and said upper face of the incision so that the upper face of the incision is maintained at least partly in relation to the incision. distance from the upper side the cutting blade.
- the method may include: introducing the spacer means into the incision at a feed rate equal to the feed rate of the cutting blade.
- the spacing means may include a spacer blade and a spacer mat that travels over the upper face of the spacer blade and below the upper face of the cutting blade bypassing a transverse edge of the blade. spacer blade, the intermediate belt can be immobilized with respect to the upper face of the incision.
- the upper side of the incision can pass over a barb of the cutting blade and is supported by the intermediate mat.
- a cutting blade which has a lower transverse face and an opposite transverse face, and a straight transverse end cutting edge, and which comprises a transversal barb projecting from said upper face side and adjoining to this transverse cutting edge; said lower face being flat and said upper face comprising a top top surface of the transverse bar, a flat end surface which joins said transverse cutting edge and said top top surface and a recessed surface joined to said top top surface by a transverse heel opposite to said transverse cutting edge; said flat end surface of said upper transverse face and an end portion of said lower face forming a cutting edge.
- a cutting device of a profile made of an elastic or viscoelastic material for obtaining profile portions intended in particular for the manufacture of tire casings and its mode of operation will now be described as exemplary embodiments, illustrated by the drawing in which:
- FIG. 1 shows a longitudinal section of a main part of the cutting device
- FIG. 2 shows a partial enlarged view of the main part of the cutting device of Figure 1;
- FIG. 3 represents a partial perspective view of the main part of the cutting device of FIG. 1;
- FIG. 4 shows a partial general perspective view of the cutting device
- FIG. 5 shows a general side view partially in section of the cutting device
- FIG. 6 shows a perspective view of a portion of the cutting device
- FIG. 7 shows a partial perspective view of an alternative embodiment of the cutting device.
- FIG. 8 shows a longitudinal section of another alternative embodiment of the main part of the cutting device.
- a cutting device 1 is intended for the production of inclined cross-sections through a prefabricated section 2 made of an elastic or viscoelastic material, in particular of a raw elastomeric blend for the manufacture of tire casings.
- the cutting device 1 comprises a table 3 which has an upper flat receiving surface 4 of the profile 2. This table 3 is equipped with a plurality of recessed cups 5, which are connected to a source of air vacuum (no shown) and which hold by suction a face 6 of the profile 2 bears on the receiving surface 4.
- the cutting device 1 comprises a thin transverse cutting blade 7 which has two opposite faces 8 and 9, lower and upper, and a straight transverse end cutting edge 10.
- the transverse cutting blade 7 is inclined with respect to the receiving surface 4 of the table 3 so that its lower face 8 is oriented downwards on the side of the profile 2 and its upper face 9 is oriented upwards.
- the transverse cutting blade 7 is animated by a movement of advance Ma inclined with respect to the receiving surface 4 of the table 3, which determines a cutting angle J3, and of a reciprocating movement M_t transverse to the profile 2 of so that the cutting edge 110 enters the section 2 to make an inclined incision 11 which has a lower face 12 on the side of the face 8 and an upper face 13 on the side of the upper face 9.
- the transverse cutting blade 7 is arranged so that, during its advance movement Ma, its lower face 8, which is flat, forms a relief angle ⁇ with the lower face 12 of the incision 11 and that thus its lower face 8 moves away from the lower face 12 of the incision 1 1 while leaving an anti-friction space 14.
- the cutting blade 7 From its transverse cutting edge 10 and with respect to its lower face 8, the cutting blade 7 has a variable thickness which determines its upper face 9 in the following manner.
- the transverse cutting blade 7 has a transverse barb 15 adjacent to the transverse cutting edge 10 and projecting from the side of the upper face 13 of the incision 11.
- the crown surface 16 of the barb 15 joins the cutting edge 10 with a flat end surface 17.
- This end surface 17 and the end portion of the bottom face 8 form a cutting edge. 1 8.
- the top surface 16 of the pin 1 5 joins an intermediate transverse surface recessed 1 9 by a transverse heel 20 of the pin 15, this transverse heel 20 being opposite to the transverse cutting edge 10.
- the transverse cutting blade 7 has, from the intermediate transverse surface 19 and up to its transverse end 2 1 opposite to the transverse cutting edge 10, a transverse surface 22 which is parallel to the lower face 8.
- the recessed intermediate transverse surface 19 has, with respect to the lower face 8, a slight slope towards the foot of the transverse heel 21.
- the recessed intermediate transverse surface 19 determines a sloping bottom of a recess 23 and the transverse heel 20 determines a flank. of this recess 23.
- the upper face 13 of the incision 1 1 of the profile 2 slides on the end surface 17 of the cutting edge 1 8 and on the top surface 1 6 of the barb 15.
- the cutting device 1 further comprises spacing means 24 able to maintain the upper face 13 of the incision 1 1 spaced relative to the upper face 9 of the cutting blade 7, with the exception of the surfaces 16 and 17 on which it slides as indicated above.
- the spacing means 24 comprise a transverse thin spacing plate 25 which is disposed above the transverse cutting blade 7 and which has, between a rounded lower transverse end edge 26 (FIG. 2) and a transverse edge upper 27 (Figure 1), a lower face 28 parallel to the intermediate transverse surface and an upper face 29 having a first surface 30 sloping with respect to the lower face 28 so as to form a tapered corner 31 to the transverse edge 26 and a second surface 32 parallel to the lower face 28 and up to the edge 27.
- a transverse thin spacing plate 25 which is disposed above the transverse cutting blade 7 and which has, between a rounded lower transverse end edge 26 (FIG. 2) and a transverse edge upper 27 ( Figure 1), a lower face 28 parallel to the intermediate transverse surface and an upper face 29 having a first surface 30 sloping with respect to the lower face 28 so as to form a tapered corner 31 to the transverse edge 26 and a second surface 32 parallel to the lower face 28 and up to the edge 27.
- the transverse spreading blade 25 is placed so that the tapered corner 31 is partially engaged in the recess 23 of the transverse cutting blade 7, the lower edge 26 being in the vicinity of the transverse heel 20 of the transverse blade of cut 7.
- the spacing means 24 furthermore comprise a thin, tensioned intermediate mat 33 which extends against the lower face 28 of the transverse spreading plate 25, which bypasses the rounded lower end edge 26 of the transverse blade 25. 25 and which extends against the upper surface 30 of the transverse spacer blade 25.
- the transverse spacer blade 25 is disposed above the transverse cutting blade 7 so that the intermediate belt 33 extends at a short distance, but at a non-zero distance, from the recessed intermediate surface 19 and the heel. 20 of the transverse cutting blade 7, this to avoid friction between the intermediate belt 33 and the recessed intermediate surface 19 and the heel 20 of the transverse cutting blade 7.
- the end portion of the spacer blade 25, adjacent to its transverse edge 26, is disposed in the direction of the thickness of this spacer blade 25, so that the top surface of the upper strand 33a of the intermediate belt 33, located on the surface 30 of the spacer blade 25, is substantially aligned with the vertex surface 16 of the barb 15.
- the transverse spreading blade 25 is driven by a substantially identical advance movement in direction and speed to the feed movement Ma of the cutting blade 7, so that their forward movements are synchronized.
- the transverse spacer blade 25 and the intermediate belt 33 are not driven by any reciprocating transversal movement.
- the upper face 13 of the incision 11 of the profile 2 is supported by the intermediate belt 33, by producing a progressive separation of this upper face 13 with respect to the lower face 12 of the incision 11.
- the intermediate belt 33 is driven with a movement relative to the blade 25, perpendicularly to the transverse edge 26, such that its upper strand 33a, which is interposed between the surface 30 of the spacer blade 25 and the upper face 13 of the incision 11 of the profile 2, remains stationary relative to at this upper face 13 of the incision 11 and slides on the surface 30 of the spacer blade 25 in the opposite direction of the advance movement Ma.
- the upper face 13 of the incision 11 of the section 2 does not undergo friction.
- the movement of the intermediate belt 33 could be such that its upper run 33a slides at a very low speed on the upper face 13 of the incision 11 of the section 2, in the opposite direction to the advance movement Ma.
- the movement of the upper strand 33a of the intermediate belt 33 is able to follow the movement of a lip 2a of the section 2 which is projecting upwards because of the progressive separation of the upper face 13 with respect to the face. lower 12 of the incision 11.
- the incision 11 has, in a longitudinal section plane perpendicular to the cutting edge 10, a section substantially V-shaped.
- the table 3 has a transverse groove 34 placed so that the cutting edge 10 of the cutting blade 7 can engage there at the end of the realization of the incision 11.
- the intermediate belt 33 is moved in a reverse movement such that again, the upper face 13 of the incision 11 of the section 2 remains stationary relative to the upper face 13 of the incision 11 of the profile 2.
- the end surface 17 of the cutting edge 18 and the top surface 16 of the barb 15 slide on the upper face 13 of the incision 11 of the profile 2.
- the width of the end surface 17 of the cutting edge 18 and the top surface 16 of the barb 15, perpendicular to the cutting edge 10 can be very widely less than the dimension of the incision 1 1 perpendicular to the cutting edge 10, so that the friction on the upper face 13 of this incision 1 1 is very limited.
- the intermediate belt 33 could be protected vis-à-vis the reciprocating movements of the cutting blade 7 by the insertion of a metal sheet (not shown) between the lower strand 33b of the intermediate belt 33, adjacent to the lower surface 28 of the spacer blade 25, and the upper surface 19 and possibly the heel 20 of the cutting blade 7.
- the width of the surface 17 of the tip 1 8 of the pin 1 5 is adapted to allow several resharpening.
- the cutting device 1 comprises an assembly 100 adapted to perform the reciprocating transverse movement M_t of the cutting blade 7, the advance movement Ma of the cutting blade 7 and the blade of 25 and the movement of the intermediate belt 33.
- the assembly 100 comprises a fixed frame 101 which carries the receiving table 3 and on which is mounted in an articulated manner a tilting frame 102, along a transverse axis 103.
- the fixed frame 10 1 and the tilting frame are connected by a jack d inclination 104.
- the tilting frame 102 carries a carriage 105.
- the carriage 105 is slidably mounted on the tilting frame 102 under the effect of a screw-nut system 106 and a motor 107, able to produce the feed movement. and the opposite recoil movement, previously described.
- the sliding carriage 105 carries a cutting block 108 on which are mounted the cutting blade 7, the spacer blade 25 and the intermediate belt 33.
- the cutting block 108 comprises a support 109 fixed to the sliding carriage 105.
- the casing 109 carries a slider 110 which carries the cutting blade 7 and which is slidably mounted on this casing 109 according to a transverse direction, parallel to the pivot axis 103 of the tilting frame 102 on the fixed frame 101.
- the support 109 carries a motor 111 which is connected to the slider 110 for example by a system 112 which transforms the rotational movement of the motor 111 into reciprocating movement of the slider 110 and consequently of the cutting blade 7.
- this system 112 may be crank or cam.
- opposite side flanges 109a and 109b of the support 109 carry the lateral ends of the spacer blade 25 (FIG. 6).
- the direction of sliding of the carriage 105 relative to the tilting frame 102 defines the direction of movement of the cutting block 108 and accordingly the direction of the advance movement Ma and the opposite recoil movement of the cutting blade 7 and the blade spacing 25 associated.
- the inclination of the tilting frame 102 relative to the fixed frame 101 defines the inclination of the direction of the advance movement Ma with respect to the receiving table 3 and consequently the angle cutting J3.
- the intermediate belt 33 is set in motion by a motorized roller.
- the opposite side flanges 109a and 109b of the support 109 carry the lateral ends of the transverse rollers 113 and 114 of the intermediate belt 33, in the direction of a transverse roller.
- motorized drive 115 whose lateral ends are also carried by the opposite side flanges 109a and 109b.
- the ends of the intermediate belt 33 are attached locally to the transverse drive roller 115 by a system 115a of transverse clamps, the intermediate belt 33 being supported on a portion of the peripheral surface of the transverse drive roller 115.
- transverse drive roll 115 One end of the transverse drive roll 115 is provided with a toothed gear 116 which is engaged with a rack a slide 117 slidably mounted on the lateral flange 109a and able to rotate the transverse drive roller 115.
- the adjustment of the relative positions of the slider 117 and the fixed stop 118 is such that the slide 117 reaches the fixed stop 118 just before the cutting blade 7 enters the profile 2 to perform the incision 11.
- the ratio between the diameter of the drive roller 115 and the nominal diameter of the toothed wheel 116 is such that when the slider 117 bears against the fixed abutment 118, the advance movement Ma causes immobilization of the upper strand 33a of the intermediate belt 33 with respect to the upper face 13 of the incision 11, as previously described.
- the slider 117 is subjected to a return spring 119 connected to the support 109, able to urge the slider 117 in the other direction during the recoil movement opposite the advance movement Ma, also in order to immobilize the strand.
- a return spring 119 connected to the support 109, able to urge the slider 117 in the other direction during the recoil movement opposite the advance movement Ma, also in order to immobilize the strand.
- upper 33a of the intermediate belt 33 relative to the upper face 13 of the incision 11 during this recoil movement, as described above.
- the motorized driving roller 117 could be rotated by a controlled-drive motor as a function of the speed of the advance movement Ma and the opposite recoil movement, by example depending on the motor control 107.
- the speed of the intermediate belt 33 may be greater than that of the advance movement Ma of the cutting blade 7 and the spacer blade 25 to facilitate penetration into the profile, pulling the end of the upper lip 2a upwardly to prevent this lip wraps itself.
- the intermediate belt 33 is set in motion by holding its ends 120 and 121 on the tilting frame 102, by means of transverse clamps 120 a and 121a, and through a motion compensation system 122, with transverse return rollers, arranged between these ends 120 and 121 and the deflection rollers 113 and 114 and carried by the carriage 105.
- the motion compensation system 122 comprises a transverse deflection roller 123 arranged between the deflection roller 113 and the end 121 of the intermediate belt 33, so that the latter presents, between this end 121 and the return roller 123, a strand 330 extending in the direction of advancement Ma.
- the motion compensation system 122 includes transverse deflection rollers 124, 125 and 126 arranged between the deflection roller 114 and the end 120 of the intermediate belt 33, so that the latter presents, between the return rollers 124 and 125 , a strand 331 extending in the direction of advance Ma, then between the return rollers 125 and 126, a strand 332 extending perpendicularly to the direction of travel Ma, then between the return roller 126 and the end 120 of the intermediate belt 33, a strand 333 extending in the direction of advance Ma.
- the return rolls 123 and 124 are adjacent to each other and are situated approximately above the deflection rolls 113 and 114, that the return rollers 125 and 126 are away from the return rollers 123 and 124, opposite the feed direction Ma, that the end 120 of the intermediate belt is in the vicinity and above the return roller 123 and that the strand 330 is extends between and at a distance strands 331 and 333 of the intermediate belt 33, the end 121 of the intermediate belt 33 being accordingly located between the strands 331 and 333 of the intermediate belt 33 in the vicinity of the return rollers 125 and 126.
- the carriage 105 which carries the cutting blade 7 and the spacer blade 25, is moved in the direction of advance Ma
- the lengths of the strands 330 and 333 vary in opposite directions of the same value, corresponding to that of the stroke of the cutting edge 10.
- the length of the strand 330 increases and the length of the strand 333 decreases, and reciprocally in the direction of return.
- the intermediate belt 33 and the associated equipment are eliminated and the transverse spacer blade 25 is replaced by a transverse spacer strip 200 which is , for example, occupies substantially the same location as that occupied by the transverse spacer blade 25 and the strands 33a and 33b of the intermediate belt 33.
- the transverse spacer blade 200 which is disposed above the transverse cutting blade 7, is partly engaged in the recess 23 of the transverse cutting blade 7 and has a lower face 201 located close to the intermediate transverse surface 19 of the transverse cutting blade 7, a lower transverse end edge 202 located near the heel 20 of the pin 15 of the transverse cutting blade 7.
- the transverse spacer blade 200 also comprises a tapered corner 203 which has a sloping upper face 204 up to its transverse end edge 202, the latter may nevertheless be rounded or beveled.
- the upper face 204 of the transverse spacer plate 200 is substantially aligned with the top surface 16 of the pin 15 of the transverse cutting blade 7.
- the transverse spacer blade 200 is movable together with the transverse cutting blade 7 in the direction of advance Ma, but is not animated by any reciprocating transversal movement.
- the upper face 13 of the incision 11 of the section 2 slides on the end surface 17 of the cutting edge 18 and on the top surface 16 of the barb 15. , the upper face 13 of the incision 11 of the section 2 is supported by the transverse spacer plate 200 and slides on the upper face 204 of the latter, without undergoing transverse effects.
- the transverse spacer blade 200 is treated or is provided with a coating so as to reduce the friction of the upper face 13 of the incision 11 of the profile 2 on its upper face 204.
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Abstract
Description
Dispositif et procédé de coupe d' un profilé et lame de coupe Device and method for cutting a profile and cutting blade
La présente invention concerne le domaine de la fabrication des pneumatiques. The present invention relates to the field of tire manufacturing.
Plus particulièrement, la présente invention concerne le domaine de la coupe transversale de profilés préfabriqués en un mélange élastomérique cru, c ' est-à-dire non réticulé, pour l'obtention de portions de profilé à partir desquelles sont réalisées les bandes de roulement de futurs pneumatiques. More particularly, the present invention relates to the field of cross section of prefabricated profiles in a raw elastomeric mixture, that is to say non-crosslinked, for obtaining profile portions from which are made the treads of future tires.
Classiquement, les profilés préfabriqués, généralement épais, sont placés à plat et les coupes transversales sont réalisées à température ambiante par une lame de coupe en forme de coin, rigide et fine, animée d'un mouvement alternatif dans le sens de l ' arête tranchante et d'un mouvement d' avance dans le sens de l ' épaisseur du produit. Conventionally, prefabricated sections, generally thick, are placed flat and cross sections are made at room temperature by a wedge-shaped cutting blade, rigid and thin, reciprocated in the direction of the sharp edge and an advance movement in the direction of the thickness of the product.
La longueur développée des portions de profilés, obtenues entre deux coupes, correspond à la longueur d' enroulement sur un tambour de confection, ou sur une forme de finition, ou sur un bandage préconformé. The developed length of the profile portions, obtained between two cuts, corresponds to the length of winding on a manufacturing drum, or on a finishing shape, or on a preformed bandage.
Les coupes sont réalisées en biais de sorte que, après enroulement d'une portion de profilé sur une forme réceptrice, les faces d' extrémité de cette portion se recouvrent en biais pour obtenir une soudure optimale de ces faces d' extrémité l'une sur l ' autre. The cuts are made obliquely so that, after winding a profile portion onto a receiving shape, the end faces of this portion overlap at an angle to obtain an optimal weld of these end faces, one on the other.
Pour obtenir des faces coupées en biais, le mouvement d' avance de la lame de coupe est incliné par rapport au profilé avec un angle déterminé. Les vitesses, amplitudes et fréquences des deux mouvements de coupe et d' avance sont adaptées à la nature du mélange élastomérique du profilé. To obtain cut faces at an angle, the feed movement of the cutting blade is inclined with respect to the profile with a determined angle. The speeds, amplitudes and frequencies of the two cutting and feed movements are adapted to the nature of the elastomeric mixture of the profile.
Lors de la coupe, les mouvements alternatifs de la lame de coupe induisent des frottements sur le profilé, qui provoquent des dégradations et des déformations des faces de l' incision. La face de la lame de coupe située du côté du profilé présente généralement un faible angle de dépouille de façon à réduire les frottements de la lame de coupe sur la face correspondante de l 'incision. Néanmoins, cet angle de dépouille accroît le frottement de l ' autre face de la lame de coupe sur l ' autre face de l 'incision. During cutting, the reciprocating movements of the cutting blade induce friction on the profile, which causes degradations and deformations of the faces of the incision. The face of the The cutting blade on the side of the profile generally has a low clearance angle to reduce the friction of the cutting blade on the corresponding face of the incision. Nevertheless, this draft angle increases the friction of the other face of the cutting blade on the other face of the incision.
Une conséquence est que le co llage, après enroulement, des faces d' extrémité des portions de profilé est dégradé et nécessite des reprises manuelles par un opérateur pour corriger les défauts, qui peuvent atteindre plusieurs millimètres, et assurer la tenue de la soudure. Cette opération est actuellement systématique sur les profilés épais et pour la plupart des différents mélanges élastomériques utilisés pour fabriquer ces profilés. A consequence is that the co llage, after winding, of the end faces of the profile portions is degraded and requires manual rework by an operator to correct the defects, which can reach several millimeters, and ensure the holding of the weld. This operation is currently systematic on the thick sections and for most of the different elastomeric mixtures used to manufacture these profiles.
Une autre conséquence est qu'il est aujourd' hui impossible d' automatiser les procédés d' enroulement des portions de profilé et de soudure de leurs faces d' extrémité placées de façon adj acente. Another consequence is that it is nowadays impossible to automate the processes for winding the profile and weld portions of their end faces placed in an adjoining manner.
La présente invention a pour but d' améliorer les conditions de coupe d 'un profilé. The present invention aims to improve the cutting conditions of a profile.
Selon un mo de de réalisation, il est proposé un dispositif de coupe d'un profilé en une matière élastique ou viscoélastique, pour l'obtention de portions de profilé destinées en particulier à la fabrication d' enveloppes de pneumatique. According to one embodiment, there is provided a device for cutting a profile of an elastic or viscoelastic material, for obtaining profile portions intended in particular for the manufacture of tire casings.
Le dispositif de coupe comprend une table présentant une surface supérieure de réception apte à recevoir le profilé, selon une direction longitudinale ; une lame transversale de coupe inclinée par rapport à ladite surface supérieure de réception et présentant une arête transversale de coupe et, depuis cette arête de coupe, une face inférieure tournée du côté de la surface supérieure de réception et une face supérieure ; un moyen d' entraînement pour imprimer à la lame de coupe un mouvement transversal alternatif et un moyen d' entraînement pour imprimer à la lame de coupe un mouvement d' avance selon une direction inclinée par rapport à la surface de réception de la table, afin de réaliser une incision inclinée présentant une face inférieure du côté de la table et une face supérieure ; et un moyen d' écartement disposé au-dessus de la face supérieure de la lame de coupe, apte à pénétrer dans l' incision et à maintenir écartée, au moins en partie, ladite face supérieure de l ' incision par rapport à la lame de coupe. The cutting device comprises a table having an upper receiving surface adapted to receive the profile, in a longitudinal direction; a transverse cutting blade inclined with respect to said upper receiving surface and having a transverse cutting edge and, from this cutting edge, a lower face turned towards the upper receiving surface and an upper face; drive means for imparting reciprocating transverse movement and driving means to the cutting blade for imparting to the cutting blade an advance movement in a direction inclined with respect to the receiving surface of the table, in order to making an inclined incision having a lower side of the table side and an upper face; and spacing means disposed above the upper face of the cutting blade, adapted to penetrate in the incision and keeping at least a portion of said upper face of the incision relatively to the cutting blade.
Le moyen d' écartement peut comprendre une lame d' écartement et un moyen d' entraînement apte à imprimer un mouvement d' avance de cette lame d' écartement selon la direction d ' avance de la lame de coupe. The spacing means may comprise a spacer blade and a drive means adapted to print a forward movement of the spacer blade in the direction of advance of the cutting blade.
Les moyens d' entraînement de la lame de coupe et de la lame d' écartement peuvent être synchronisés. The drive means of the cutting blade and the spacer blade can be synchronized.
Le moyen d' écartement peut comprendre un tapis intercalaire interposé entre la lame de coupe et la face supérieure de l ' incision. The spacing means may comprise an intermediate mat interposed between the cutting blade and the upper face of the incision.
Le moyen d' écartement peut comprendre un moyen d' entraînement dudit tapis intercalaire, apte à immobiliser ce tapis intercalaire par rapport à la face supérieure de l ' incision. The spacing means may comprise means for driving said intermediate belt, adapted to immobilize the intermediate belt with respect to the upper face of the incision.
La lame de coupe peut comprendre un ardillon adj acent à son arête de coupe et une surface en retrait joignant une surface supérieure de l ' ardillon par un talon opposé à l ' arête de coupe, le moyen d' écartement s ' étendant au moins en partie au-dessus de ladite surface en retrait de la lame de coupe. The cutting blade may comprise an adjoining pin at its cutting edge and a recessed surface joining an upper surface of the pin with a heel opposite the cutting edge, the spacer extending at least portion above said recessed surface of the cutting blade.
Le moyen d' écartement peut présenter une face supérieure dont au moins une partie terminale, adj acente audit ardillon, est alignée avec ladite surface de sommet de l ' ardillon. The spacing means may have an upper face, at least one end portion, adjacent to said pin, is aligned with said apex surface of the barb.
Il est également proposé un procédé de coupe d'un profilé en une matière élastique ou viscoélastique pour l ' obtention de portions de profilés destinées en particulier à la fabrication d' enveloppes de pneumatiques. It is also proposed a method of cutting a profile of an elastic or viscoelastic material to obtain profile portions intended in particular for the manufacture of tire covers.
Le procédé comprend : placer le profilé sur une surface supérieure de réception d 'une table ; imprimer un mouvement transversal alternatif et un mouvement d' avance, selon une direction inclinée par rapport à ladite surface supérieure de réception, à une lame de coupe présentant une arête de coupe coupant le profilé et présentant, depuis cette arête de coupe, une face inférieure du côté de ladite surface de réception et une face supérieure, de façon à réaliser une incision au travers du profilé et transversalement à ce dernier, cette incision inclinée présentant une face inférieure du côté de ladite face inférieure de la lame de coupe et une face supérieure du côté de la face supérieure de la lame de coupe. The method includes: placing the profile on an upper receiving surface of a table; printing a reciprocating transversal movement and an advance movement, in a direction inclined relative to said upper receiving surface, to a cutting blade having a cutting edge cutting the profile and having, from this cutting edge, a lower face on the side of said receiving surface and an upper face, so as to make an incision through the profile and transverse thereto, this inclined incision having a lower face on the side of said lower face of the cutting blade and an upper face on the side of the upper face of the cutting blade.
Selon le procédé, ladite face inférieure de la lame de coupe est, au moins en partie, à distance de ladite face inférieure de l 'incision. According to the method, said lower face of the cutting blade is, at least in part, at a distance from said lower face of the incision.
Le procédé comprend en outre : introduire dans l' incision un moyen d' écartement entre ladite face supérieure de la lame de coupe et ladite face supérieure de l' incision de sorte que la face supérieure de l' incision soit maintenue au moins en partie à distance de la face supérieure la lame de coupe. The method further comprises: introducing into the incision a means for spacing between said upper face of the cutting blade and said upper face of the incision so that the upper face of the incision is maintained at least partly in relation to the incision. distance from the upper side the cutting blade.
Le procédé peut comprendre : introduire le moyen d' écartement dans l' incision à une vitesse d' avance égale à la vitesse d ' avance de la lame de coupe. The method may include: introducing the spacer means into the incision at a feed rate equal to the feed rate of the cutting blade.
Le moyen d' écartement pouvant comprendre une lame d' écartement et un tapis intercalaire circulant au-dessus de la face supérieure de la lame d' écartement et au-dessous de la face supérieure de la lame de coupe en contournant un bord transversal de la lame d' écartement, le tapis intercalaire peut être immobilisé par rapport à la face supérieure de l ' incision. The spacing means may include a spacer blade and a spacer mat that travels over the upper face of the spacer blade and below the upper face of the cutting blade bypassing a transverse edge of the blade. spacer blade, the intermediate belt can be immobilized with respect to the upper face of the incision.
La face supérieure de l 'incision peut passer sur un ardillon de la lame de coupe puis est prise en charge par le tapis intercalaire . The upper side of the incision can pass over a barb of the cutting blade and is supported by the intermediate mat.
Il est également proposé une lame de coupe, qui présente une face transversale inférieure et une face transversale supérieure, opposées, et une arête transversale terminale rectiligne de coupe, et qui comprend un ardillon transversal en saillie du côté de ladite face supérieure et adj acent à cette arête transversale de coupe ; ladite face inférieure étant plate et ladite face supérieure comprenant une surface supérieure de sommet de l ' ardillon transversal, une surface terminale plate qui joint ladite arête transversal de coupe et ladite surface supérieure de sommet et une surface en retrait jointe à ladite surface supérieure de sommet par un talon transversal opposé à ladite arête transversal de coupe ; ladite surface terminale plate de ladite face transversale supérieure et une partie terminale de ladite face inférieure formant un tranchant. Un dispositif de coupe d 'un profilé en une matière élastique ou viscoélastique pour l 'obtention de portions de profilé destinées en particulier à la fabrication d' enveloppes de pneumatique et son mode de fonctionnement vont maintenant être décrits à titre d' exemples de réalisation, illustrés par le dessin dans lequel : It is also proposed a cutting blade, which has a lower transverse face and an opposite transverse face, and a straight transverse end cutting edge, and which comprises a transversal barb projecting from said upper face side and adjoining to this transverse cutting edge; said lower face being flat and said upper face comprising a top top surface of the transverse bar, a flat end surface which joins said transverse cutting edge and said top top surface and a recessed surface joined to said top top surface by a transverse heel opposite to said transverse cutting edge; said flat end surface of said upper transverse face and an end portion of said lower face forming a cutting edge. A cutting device of a profile made of an elastic or viscoelastic material for obtaining profile portions intended in particular for the manufacture of tire casings and its mode of operation will now be described as exemplary embodiments, illustrated by the drawing in which:
- la figure 1 représente une coupe longitudinale d'une partie principale du dispositif de coupe ; - Figure 1 shows a longitudinal section of a main part of the cutting device;
- la figure 2 représente une vue agrandie partielle de la partie principale du dispositif de coupe de la figure 1 ; - Figure 2 shows a partial enlarged view of the main part of the cutting device of Figure 1;
- la figure 3 représente une vue en perspective partielle de la partie principale du dispositif de coupe de la figure 1 ; FIG. 3 represents a partial perspective view of the main part of the cutting device of FIG. 1;
- la figure 4 représente une vue en perspective générale partielle du dispositif de coupe ; - Figure 4 shows a partial general perspective view of the cutting device;
- la figure 5 représente une vue générale de côté partiellement en coupe du dispositif de coupe ; - Figure 5 shows a general side view partially in section of the cutting device;
- la figure 6 représente une vue en perspective d'une partie du dispositif de coupe ; - Figure 6 shows a perspective view of a portion of the cutting device;
- la figure 7 représente une vue en perspective partielle d 'une variante de réalisation du dispositif de coupe ; et - Figure 7 shows a partial perspective view of an alternative embodiment of the cutting device; and
- la figure 8 représente une coupe longitudinale d'une autre variante de réalisation de la partie principale du dispositif de coupe. - Figure 8 shows a longitudinal section of another alternative embodiment of the main part of the cutting device.
Comme illustré sur les figures 1 , 2 et 3 , un dispositif de coupe 1 est destiné à la réalisation de coupes transversales inclinées au travers d'un profilé préfabriqué 2 en une matière élastique ou viscoélastique, en particulier en un mélange élastomérique cru pour la fabrication d' enveloppes de pneumatique. As illustrated in FIGS. 1, 2 and 3, a cutting device 1 is intended for the production of inclined cross-sections through a prefabricated section 2 made of an elastic or viscoelastic material, in particular of a raw elastomeric blend for the manufacture of tire casings.
Le dispositif de coupe 1 comprend une table 3 qui présente une surface supérieure 4 de réception à plat du profilé 2. Cette table 3 est équipée d 'une pluralité de ventouses 5 encastrées, qui sont reliées à une source de dépression d' air (non représentée) et qui maintiennent par aspiration une face 6 du profilé 2 en appui sur la surface de réception 4. Le dispositif de coupe 1 comprend une lame fine transversale de coupe 7 qui présente deux faces opposées 8 et 9, inférieure et supérieure, et une arête transversale terminale rectiligne de coupe 10. The cutting device 1 comprises a table 3 which has an upper flat receiving surface 4 of the profile 2. This table 3 is equipped with a plurality of recessed cups 5, which are connected to a source of air vacuum (no shown) and which hold by suction a face 6 of the profile 2 bears on the receiving surface 4. The cutting device 1 comprises a thin transverse cutting blade 7 which has two opposite faces 8 and 9, lower and upper, and a straight transverse end cutting edge 10.
La lame transversale de coupe 7 est inclinée par rapport à la surface de réception 4 de la table 3 de sorte que sa face inférieure 8 est orientée vers le bas du côté du profilé 2 et sa face supérieure 9 est orientée vers le haut. The transverse cutting blade 7 is inclined with respect to the receiving surface 4 of the table 3 so that its lower face 8 is oriented downwards on the side of the profile 2 and its upper face 9 is oriented upwards.
La lame transversale de coupe 7 est animée d'un mouvement d' avance Ma incliné par rapport à la surface de réception 4 de la table 3 , qui détermine un angle de coupe J3 , et d'un mouvement alternatif M_t transversal au profilé 2 de sorte que l ' arête de coupe 1 0 pénètre dans le profilé 2 pour réaliser une incision inclinée 1 1 qui présente une face inférieure 12 du côté de la face 8 et une face supérieure 13 du côté de la face supérieure 9. The transverse cutting blade 7 is animated by a movement of advance Ma inclined with respect to the receiving surface 4 of the table 3, which determines a cutting angle J3, and of a reciprocating movement M_t transverse to the profile 2 of so that the cutting edge 110 enters the section 2 to make an inclined incision 11 which has a lower face 12 on the side of the face 8 and an upper face 13 on the side of the upper face 9.
La lame transversale de coupe 7 est disposée de sorte que, lors de son mouvement d' avance Ma, sa face inférieure 8 , qui est plate, forme un angle de dépouille a avec la face inférieure 12 de l ' incision 1 1 et qu' ainsi sa face inférieure 8 se déplace à distance de la face inférieure 12 de l' incision 1 1 en laissant subsister une espace d' anti- frottement 14. The transverse cutting blade 7 is arranged so that, during its advance movement Ma, its lower face 8, which is flat, forms a relief angle α with the lower face 12 of the incision 11 and that thus its lower face 8 moves away from the lower face 12 of the incision 1 1 while leaving an anti-friction space 14.
Depuis son arête transversale de coupe 10 et par rapport à sa face inférieure 8 , la lame de coupe 7 présente une épaisseur variable qui détermine sa face supérieure 9 de la manière suivante . From its transverse cutting edge 10 and with respect to its lower face 8, the cutting blade 7 has a variable thickness which determines its upper face 9 in the following manner.
La lame transversale de coupe 7 présente un ardillon transversal 15 adj acent à l ' arête transversale de coupe 1 0 et en saillie du côté de la face supérieure 13 de l' incision 1 1 . The transverse cutting blade 7 has a transverse barb 15 adjacent to the transverse cutting edge 10 and projecting from the side of the upper face 13 of the incision 11.
Comme illustré plus précisément sur la figure 2, la surface de sommet 16 de l ' ardillon 15 rejoint l ' arête de coupe 1 0 par une surface terminale plate 17. Cette surface terminale 17 et la partie terminale de la face inférieure 8 forment un tranchant 1 8. As illustrated more precisely in FIG. 2, the crown surface 16 of the barb 15 joins the cutting edge 10 with a flat end surface 17. This end surface 17 and the end portion of the bottom face 8 form a cutting edge. 1 8.
La surface de sommet 16 de l ' ardillon 1 5 rejoint une surface transversale intermédiaire en retrait 1 9 par un talon transversal 20 de l ' ardillon 15 , ce talon transversal 20 étant opposé à l ' arête transversale de coupe 10. La lame transversale de coupe 7 présente, depuis la surface transversale intermédiaire 19 et jusqu' à son extrémité transversale 2 1 opposée à l ' arête transversale de coupe 10, une surface transversale 22 qui est parallèle à la face inférieure 8. The top surface 16 of the pin 1 5 joins an intermediate transverse surface recessed 1 9 by a transverse heel 20 of the pin 15, this transverse heel 20 being opposite to the transverse cutting edge 10. The transverse cutting blade 7 has, from the intermediate transverse surface 19 and up to its transverse end 2 1 opposite to the transverse cutting edge 10, a transverse surface 22 which is parallel to the lower face 8.
La surface transversale intermédiaire en retrait 19 présente, par rapport à la face inférieure 8 , une faible pente en direction du pied du talon transversal 21 . The recessed intermediate transverse surface 19 has, with respect to the lower face 8, a slight slope towards the foot of the transverse heel 21.
Ainsi, par rapport à la surface de sommet 16 de l ' ardillon 1 5 et par rapport à la surface transversale 22, la surface transversale intermédiaire en retrait 19 détermine un fond en pente d'un évidement 23 et le talon transversal 20 détermine un flanc de cet évidement 23. Thus, with respect to the apex surface 16 of the pin 1 5 and with respect to the transverse surface 22, the recessed intermediate transverse surface 19 determines a sloping bottom of a recess 23 and the transverse heel 20 determines a flank. of this recess 23.
Lors du mouvement d' avance Ma de la lame transversale de coupe 10, la face supérieure 13 de l 'incision 1 1 du profilé 2 glisse sur la surface terminale 17 du tranchant 1 8 et sur la surface de sommet 1 6 de l ' ardillon 15. During the advance movement Ma of the transverse cutting blade 10, the upper face 13 of the incision 1 1 of the profile 2 slides on the end surface 17 of the cutting edge 1 8 and on the top surface 1 6 of the barb 15.
Le dispositif de coupe 1 comprend en outre des moyens d' écartement 24 aptes à maintenir la face supérieure 13 de l' incision 1 1 écartée par rapport à la face supérieure 9 de la lame de coupe 7, à l ' exception des surfaces 16 et 17 sur lesquelles elle glisse comme indiqué ci-dessus . The cutting device 1 further comprises spacing means 24 able to maintain the upper face 13 of the incision 1 1 spaced relative to the upper face 9 of the cutting blade 7, with the exception of the surfaces 16 and 17 on which it slides as indicated above.
Les moyens d' écartement 24 comprennent une lame fine transversale d' écartement 25 qui est disposée au-dessus de la lame transversale de coupe 7 et qui présente, entre un bord transversal inférieur arrondi d' extrémité 26 (figure 2) et un bord transversal supérieur 27 (figure 1 ), une face inférieure 28 parallèle à la surface transversale intermédiaire et une face supérieure 29 présentant une première surface 30 en pente par rapport à la face inférieure 28 de façon à former un coin effilé 3 1 jusqu' au bord transversal 26 et une seconde surface 32 parallèle à la face inférieure 28 et allant jusqu' au bord 27. The spacing means 24 comprise a transverse thin spacing plate 25 which is disposed above the transverse cutting blade 7 and which has, between a rounded lower transverse end edge 26 (FIG. 2) and a transverse edge upper 27 (Figure 1), a lower face 28 parallel to the intermediate transverse surface and an upper face 29 having a first surface 30 sloping with respect to the lower face 28 so as to form a tapered corner 31 to the transverse edge 26 and a second surface 32 parallel to the lower face 28 and up to the edge 27.
La lame transversale d' écartement 25 est placée de sorte que le coin effilé 3 1 est en partie engagé dans l ' évidement 23 de la lame transversale de coupe 7, le bord inférieur 26 étant à proximité du talon transversal 20 de la lame transversale de coupe 7. Les moyens d'écartement 24 comprennent en outre un tapis intercalaire fin tendu 33 qui s'étend contre la face inférieure 28 de la lame transversale d'écartement 25, qui contourne en appui le bord inférieur arrondi d'extrémité 26 de la lame transversale d'écartement 25 et qui s'étend contre la surface supérieure 30 de la lame transversale d'écartement 25. The transverse spreading blade 25 is placed so that the tapered corner 31 is partially engaged in the recess 23 of the transverse cutting blade 7, the lower edge 26 being in the vicinity of the transverse heel 20 of the transverse blade of cut 7. The spacing means 24 furthermore comprise a thin, tensioned intermediate mat 33 which extends against the lower face 28 of the transverse spreading plate 25, which bypasses the rounded lower end edge 26 of the transverse blade 25. 25 and which extends against the upper surface 30 of the transverse spacer blade 25.
La lame transversale d'écartement 25 est disposée au-dessus de la lame transversale de coupe 7 de sorte que le tapis intercalaire 33 s'étende à faible distance, mais à une distance non nulle, de la surface intermédiaire en retrait 19 et du talon 20 de la lame transversale de coupe 7, ceci afin d'éviter les frottements entre le tapis intercalaire 33 et la surface intermédiaire en retrait 19 et le talon 20 de la lame transversale de coupe 7. The transverse spacer blade 25 is disposed above the transverse cutting blade 7 so that the intermediate belt 33 extends at a short distance, but at a non-zero distance, from the recessed intermediate surface 19 and the heel. 20 of the transverse cutting blade 7, this to avoid friction between the intermediate belt 33 and the recessed intermediate surface 19 and the heel 20 of the transverse cutting blade 7.
La partie terminale de la lame d'écartement 25, adjacente à son bord transversal 26, est disposée, dans le sens de l'épaisseur de cette lame d'écartement 25, de sorte que la surface de dessus du brin supérieur 33a du tapis intercalaire 33, situé sur la surface 30 de la lame d'écartement 25, soit substantiellement alignée avec la surface de sommet 16 de l'ardillon 15. The end portion of the spacer blade 25, adjacent to its transverse edge 26, is disposed in the direction of the thickness of this spacer blade 25, so that the top surface of the upper strand 33a of the intermediate belt 33, located on the surface 30 of the spacer blade 25, is substantially aligned with the vertex surface 16 of the barb 15.
La lame transversale d'écartement 25 est animée d'un mouvement d'avance substantiellement identique en direction et en vitesse au mouvement d'avance Ma de la lame de coupe 7, de sorte que leurs mouvements d'avance sont synchronisés. The transverse spreading blade 25 is driven by a substantially identical advance movement in direction and speed to the feed movement Ma of the cutting blade 7, so that their forward movements are synchronized.
Contrairement à la lame de coupe 7, la lame transversale d'écartement 25 et le tapis intercalaire 33 ne sont animés d'aucun mouvement transversal alternatif. Unlike the cutting blade 7, the transverse spacer blade 25 and the intermediate belt 33 are not driven by any reciprocating transversal movement.
Lors du mouvement d'avance simultané Ma de la lame transversale de coupe 10 et de la lame d'écartement pourvue du tapis intercalaire 33, la face supérieure 13 de l'incision 11 du profilé 2 est prise en charge par le tapis intercalaire 33, en produisant un écartement progressif de cette face supérieure 13 par rapport à la face inférieure 12 de l'incision 11. During the simultaneous advance movement Ma of the transverse cutting blade 10 and of the spacer blade provided with the intermediate belt 33, the upper face 13 of the incision 11 of the profile 2 is supported by the intermediate belt 33, by producing a progressive separation of this upper face 13 with respect to the lower face 12 of the incision 11.
Lors du mouvement d'avance simultané Ma, le tapis intercalaire 33 est animé d'un mouvement par rapport à la lame d'écartement 25, perpendiculairement au bord transversal 26, tel que son brin supérieur 33a, qui est intercalé entre la surface 30 de la lame d'écartement 25 et la face supérieure 13 de l'incision 11 du profilé 2, reste immobile par rapport à cette face supérieure 13 de l'incision 11 et glisse sur la surface 30 de la lame d'écartement 25 en sens inverse du mouvement d'avance Ma. Ainsi, lors du mouvement d'avance simultané Ma, produisant la coupe du profilé 2, la face supérieure 13 de l'incision 11 du profilé 2 ne subit pas de frottement. During the simultaneous advance movement Ma, the intermediate belt 33 is driven with a movement relative to the blade 25, perpendicularly to the transverse edge 26, such that its upper strand 33a, which is interposed between the surface 30 of the spacer blade 25 and the upper face 13 of the incision 11 of the profile 2, remains stationary relative to at this upper face 13 of the incision 11 and slides on the surface 30 of the spacer blade 25 in the opposite direction of the advance movement Ma. Thus, during the simultaneous advance movement Ma, producing the section of the section 2 , the upper face 13 of the incision 11 of the section 2 does not undergo friction.
Selon une variante de fonctionnement, le mouvement du tapis intercalaire 33 pourrait être tel que son brin supérieur 33a glisse à très faible vitesse sur la face supérieure 13 de l'incision 11 du profilé 2, dans le sens contraire au mouvement d'avance Ma. Ainsi, le mouvement du brin supérieur 33a du tapis intercalaire 33 est apte à suivre le mouvement d'une lèvre 2a du profilé 2 se formant en saillie vers le haut du fait de l'écartement progressif de la face supérieure 13 par rapport à la face inférieure 12 de l'incision 11. According to an alternative embodiment, the movement of the intermediate belt 33 could be such that its upper run 33a slides at a very low speed on the upper face 13 of the incision 11 of the section 2, in the opposite direction to the advance movement Ma. Thus, the movement of the upper strand 33a of the intermediate belt 33 is able to follow the movement of a lip 2a of the section 2 which is projecting upwards because of the progressive separation of the upper face 13 with respect to the face. lower 12 of the incision 11.
Il résulte de ce qui précède que, grâce à l'ardillon 15 de la lame de coupe et aux moyens d'écartement 24 subséquents, l'incision 11 présente, dans un plan de coupe longitudinal perpendiculaire à l'arête de coupe 10, une section substantiellement en forme de V. It follows from the foregoing that, thanks to the barb 15 of the cutting blade and the subsequent spacing means 24, the incision 11 has, in a longitudinal section plane perpendicular to the cutting edge 10, a section substantially V-shaped.
La table 3 présente une rainure transversale 34 placée de façon que l'arête de coupe 10 de la lame de coupe 7 puisse s'y engager à la fin de la réalisation de l'incision 11. The table 3 has a transverse groove 34 placed so that the cutting edge 10 of the cutting blade 7 can engage there at the end of the realization of the incision 11.
Lors du mouvement simultané de recul de la lame de coupe 7 et de la lame d'écartement 25, le tapis intercalaire 33 est animé d'un mouvement inverse tel qu'à nouveau, la face supérieure 13 de l'incision 11 du profilé 2, reste immobile par rapport à la face supérieure 13 de l'incision 11 du profilé 2. Là également, seules la surface terminale 17 du tranchant 18 et la surface de sommet 16 de l'ardillon 15 glissent sur la face supérieure 13 de l'incision 11 du profilé 2. During the simultaneous recoil movement of the cutting blade 7 and the spacer blade 25, the intermediate belt 33 is moved in a reverse movement such that again, the upper face 13 of the incision 11 of the section 2 remains stationary relative to the upper face 13 of the incision 11 of the profile 2. Here again, only the end surface 17 of the cutting edge 18 and the top surface 16 of the barb 15 slide on the upper face 13 of the incision 11 of the profile 2.
Avantageusement, la largeur de la surface terminale 17 du tranchant 18 et de la surface de sommet 16 de l'ardillon 15, perpendiculairement à l'arête de coupe 10, peut être très largement inférieure à la dimension de l ' incision 1 1 perpendiculairement à l ' arête de coupe 10, de sorte que le frottement sur la face supérieure 13 de cette incision 1 1 est très limité. Advantageously, the width of the end surface 17 of the cutting edge 18 and the top surface 16 of the barb 15, perpendicular to the cutting edge 10, can be very widely less than the dimension of the incision 1 1 perpendicular to the cutting edge 10, so that the friction on the upper face 13 of this incision 1 1 is very limited.
Selon une variante de réalisation, le tapis intercalaire 33 pourrait être protégé vis-à-vis des mouvements alternatifs de la lame de coupe 7 par l ' insertion d 'une feuille métallique (non représentée) entre le brin inférieur 33b du tapis intercalaire 33 , adj acent à la surface inférieure 28 de la lame d' écartement 25 , et la surface supérieure 19 et éventuellement le talon 20 de la lame de coupe 7. According to an alternative embodiment, the intermediate belt 33 could be protected vis-à-vis the reciprocating movements of the cutting blade 7 by the insertion of a metal sheet (not shown) between the lower strand 33b of the intermediate belt 33, adjacent to the lower surface 28 of the spacer blade 25, and the upper surface 19 and possibly the heel 20 of the cutting blade 7.
La largeur de la surface 17 de la pointe 1 8 de l ' ardillon 1 5 est adaptée pour permettre plusieurs réaffûtages . The width of the surface 17 of the tip 1 8 of the pin 1 5 is adapted to allow several resharpening.
Grâce à l ' existence de l ' ardillon 15 plus épais, l ' arête de coupe 10 est renforcée et sa longévité est accrue. Due to the existence of the thicker barb 15, the cutting edge 10 is reinforced and its longevity is increased.
Comme illustré sur les figures 4 à 6, le dispositif de coupe 1 comprend un ensemble 100 apte à réaliser le mouvement transversal alternatif M_t de la lame de coupe 7, le mouvement d' avance Ma de la lame de coupe 7 et de la lame d' écartement 25 et le mouvement du tapis intercalaire 33. As illustrated in Figures 4 to 6, the cutting device 1 comprises an assembly 100 adapted to perform the reciprocating transverse movement M_t of the cutting blade 7, the advance movement Ma of the cutting blade 7 and the blade of 25 and the movement of the intermediate belt 33.
L ' ensemble 100 comprend un châssis fixe 101 qui porte la table de réception 3 et sur lequel est monté de façon articulée un châssis inclinable 102, selon un axe transversal 103. Le châssis fixe 10 1 et le châssis inclinable sont reliés par un vérin d 'inclinaison 104. The assembly 100 comprises a fixed frame 101 which carries the receiving table 3 and on which is mounted in an articulated manner a tilting frame 102, along a transverse axis 103. The fixed frame 10 1 and the tilting frame are connected by a jack d inclination 104.
Le châssis inclinable 102 porte un chariot 105. Le chariot 1 05 est monté coulissant sur le châssis inclinable 102 sous l ' effet d 'un système de vis-écrou 106 et d'un moteur 107, aptes à produire le mouvement d' avance Ma et le mouvement opposé de recul, décrits précédemment. The tilting frame 102 carries a carriage 105. The carriage 105 is slidably mounted on the tilting frame 102 under the effect of a screw-nut system 106 and a motor 107, able to produce the feed movement. and the opposite recoil movement, previously described.
Le chariot coulissant 105 porte un blo c de coupe 108 sur lequel sont montés la lame de coupe 7, la lame d' écartement 25 et le tapis intercalaire 33. The sliding carriage 105 carries a cutting block 108 on which are mounted the cutting blade 7, the spacer blade 25 and the intermediate belt 33.
Le blo c de coupe 108 comprend un support 109 fixé au chariot coulissant 105. Le carter 109 porte un coulisseau 1 10 qui porte la lame de coupe 7 et qui est monté coulissant sur ce carter 109 selon une direction transversale, parallèle à l'axe de pivotement 103 du châssis inclinable 102 sur le châssis fixe 101. The cutting block 108 comprises a support 109 fixed to the sliding carriage 105. The casing 109 carries a slider 110 which carries the cutting blade 7 and which is slidably mounted on this casing 109 according to a transverse direction, parallel to the pivot axis 103 of the tilting frame 102 on the fixed frame 101.
Le support 109 porte un moteur 111 qui est relié au coulisseau 110 par exemple par un système 112 qui transforme le mouvement de rotation du moteur 111 en un mouvement alternatif du coulisseau 110 et en conséquence de la lame de coupe 7. Par exemple, ce système 112 peut être à bielle-manivelle ou à came. The support 109 carries a motor 111 which is connected to the slider 110 for example by a system 112 which transforms the rotational movement of the motor 111 into reciprocating movement of the slider 110 and consequently of the cutting blade 7. For example, this system 112 may be crank or cam.
En outre, des flasques latéraux opposés 109a et 109b du support 109 portent les extrémités latérales de la lame d'écartement 25 (figure 6). In addition, opposite side flanges 109a and 109b of the support 109 carry the lateral ends of the spacer blade 25 (FIG. 6).
La direction du coulissement du chariot 105 par rapport au châssis inclinable 102 définit la direction du mouvement du bloc de coupe 108 et en conséquence la direction du mouvement d'avance Ma et le mouvement opposé de recul de la lame de coupe 7 et de la lame d'écartement 25 associée. The direction of sliding of the carriage 105 relative to the tilting frame 102 defines the direction of movement of the cutting block 108 and accordingly the direction of the advance movement Ma and the opposite recoil movement of the cutting blade 7 and the blade spacing 25 associated.
L'inclinaison du châssis inclinable 102 par rapport au châssis fixe 101, déterminée par le vérin d'inclinaison 104, définit l'inclinaison de la direction du mouvement d'avance Ma par rapport à la table de réception 3 et en conséquence l'angle de coupe J3. The inclination of the tilting frame 102 relative to the fixed frame 101, determined by the tilt cylinder 104, defines the inclination of the direction of the advance movement Ma with respect to the receiving table 3 and consequently the angle cutting J3.
Dans un mode de réalisation décrit ci-après, le tapis intercalaire 33 est mis en mouvement grâce à un rouleau motorisé. In an embodiment described below, the intermediate belt 33 is set in motion by a motorized roller.
A proximité de l'extrémité supérieure 27 de la lame d'écartement 25, les flasques latéraux opposés 109a et 109b du support 109 portent les extrémités latérales de rouleaux transversaux 113 et 114 de déviation du tapis intercalaire 33, en direction d'un rouleau transversal motorisé d'entraînement 115 dont les extrémités latérales sont également portées par les flasques latéraux opposés 109a et 109b. Near the upper end 27 of the spacer blade 25, the opposite side flanges 109a and 109b of the support 109 carry the lateral ends of the transverse rollers 113 and 114 of the intermediate belt 33, in the direction of a transverse roller. motorized drive 115 whose lateral ends are also carried by the opposite side flanges 109a and 109b.
Les extrémités du tapis intercalaire 33 sont fixées localement au rouleau transversal d'entraînement 115 grâce à un système 115a de pinces transversales, le tapis intercalaire 33 étant en appui sur une partie de la surface périphérique du rouleau transversal d'entraînement 115. The ends of the intermediate belt 33 are attached locally to the transverse drive roller 115 by a system 115a of transverse clamps, the intermediate belt 33 being supported on a portion of the peripheral surface of the transverse drive roller 115.
L'une des extrémités du rouleau transversal d'entraînement 115 est munie d'une roue dentée 116 qui est en prise avec une crémaillère d'un coulisseau 117 monté coulissant sur le flasque latéral 109a et apte à entraîner en rotation le rouleau transversal d'entraînement 115. One end of the transverse drive roll 115 is provided with a toothed gear 116 which is engaged with a rack a slide 117 slidably mounted on the lateral flange 109a and able to rotate the transverse drive roller 115.
Lors du mouvement d'avance Ma du bloc de coupe 108, une extrémité 117a du coulisseau 117 atteint une butée latérale fixe 118 montée sur la table 3. La poursuite du mouvement d'avance Ma engendre la rotation de la roue dentée 116 sous l'effet du coulisseau 117 devenu immobile, et en conséquence la rotation du rouleau d'entraînement 115. During the advance movement Ma of the cutting block 108, one end 117a of the slider 117 reaches a fixed lateral abutment 118 mounted on the table 3. The continuation of the advance movement Ma causes the rotation of the toothed wheel 116 under the effect of the slider 117 become immobile, and consequently the rotation of the drive roller 115.
Le réglage des positions relatives du coulisseau 117 et de la butée fixe 118 est tel que le coulisseau 117 atteint la butée fixe 118 juste avant que la lame de coupe 7 pénètre dans le profilé 2 pour exécuter l'incision 11. The adjustment of the relative positions of the slider 117 and the fixed stop 118 is such that the slide 117 reaches the fixed stop 118 just before the cutting blade 7 enters the profile 2 to perform the incision 11.
Le rapport entre le diamètre du rouleau d'entraînement 115 et du diamètre nominal de la roue dentée 116 est tel que lorsque le coulisseau 117 est en appui contre la butée fixe 118, le mouvement d'avance Ma engendre une immobilisation du brin supérieur 33a du tapis intercalaire 33 par rapport à la face supérieure 13 de l'incision 11, comme cela a été décrit précédemment. The ratio between the diameter of the drive roller 115 and the nominal diameter of the toothed wheel 116 is such that when the slider 117 bears against the fixed abutment 118, the advance movement Ma causes immobilization of the upper strand 33a of the intermediate belt 33 with respect to the upper face 13 of the incision 11, as previously described.
Par ailleurs, le coulisseau 117 est soumis à un ressort de rappel 119 relié au support 109, apte à solliciter le coulisseau 117 dans l'autre sens lors du mouvement de recul opposé au mouvement d'avance Ma, aussi afin d'immobiliser le brin supérieur 33a du tapis intercalaire 33 par rapport à la face supérieure 13 de l'incision 11 lors de ce mouvement de recul, comme cela a été décrit précédemment. Furthermore, the slider 117 is subjected to a return spring 119 connected to the support 109, able to urge the slider 117 in the other direction during the recoil movement opposite the advance movement Ma, also in order to immobilize the strand. upper 33a of the intermediate belt 33 relative to the upper face 13 of the incision 11 during this recoil movement, as described above.
Selon une variante de réalisation (non représentée), le rouleau motorisé d'entraînement 117 pourrait être entraîné en rotation par un moteur d'entraînement à commande régulée en fonction de la vitesse du mouvement d'avance Ma et du mouvement de recul opposé, par exemple en fonction de la commande du moteur 107. According to an alternative embodiment (not shown), the motorized driving roller 117 could be rotated by a controlled-drive motor as a function of the speed of the advance movement Ma and the opposite recoil movement, by example depending on the motor control 107.
Ainsi, il devient possible de gérer des vitesses différentes entre le défilement du tapis intercalaire 33 et le mouvement d'avance Ma de la lame de coupe 7 et de la lame d'écartement 25. Plus précisément, au début de la coupe, la vitesse du tapis intercalaire 33 peut être supérieure à celle du mouvement d'avance Ma de la lame de coupe 7 et de la lame d'écartement 25 de façon à faciliter la pénétration dans le profilé, en tirant l'extrémité de la lèvre supérieure 2a vers le haut afin d'éviter que cette lèvre ne s'enroule sur elle-même. Thus, it becomes possible to manage different speeds between the running of the intermediate belt 33 and the advance movement Ma of the cutting blade 7 and the spacer blade 25. More precisely, at the beginning of the cut, the speed of the intermediate belt 33 may be greater than that of the advance movement Ma of the cutting blade 7 and the spacer blade 25 to facilitate penetration into the profile, pulling the end of the upper lip 2a upwardly to prevent this lip wraps itself.
Selon un autre mode de réalisation décrit ci-après et illustré sur la figure 7, le tapis intercalaire 33 est mis en mouvement grâce à un maintien de ses extrémités 120 et 121 sur le châssis inclinable 102, par l'intermédiaire de pinces transversales 120a et 121a, et grâce à un système de compensation de mouvement 122, à rouleaux transversaux de renvoi, agencé entre ces extrémités 120 et 121 et les rouleaux de déviation 113 et 114 et porté par le chariot 105. According to another embodiment described below and illustrated in FIG. 7, the intermediate belt 33 is set in motion by holding its ends 120 and 121 on the tilting frame 102, by means of transverse clamps 120 a and 121a, and through a motion compensation system 122, with transverse return rollers, arranged between these ends 120 and 121 and the deflection rollers 113 and 114 and carried by the carriage 105.
Le système de compensation de mouvement 122 comprend un rouleau transversal de renvoi 123 agencé entre le rouleau de déviation 113 et l'extrémité 121 du tapis intercalaire 33, de sorte que ce dernier présente, entre cette extrémité 121 et le rouleau de renvoi 123, un brin 330 s'étendant selon la direction d'avancement Ma. The motion compensation system 122 comprises a transverse deflection roller 123 arranged between the deflection roller 113 and the end 121 of the intermediate belt 33, so that the latter presents, between this end 121 and the return roller 123, a strand 330 extending in the direction of advancement Ma.
Le système de compensation de mouvement 122 comprend des rouleaux transversaux de renvoi 124, 125 et 126 agencés entre le rouleau de déviation 114 et l'extrémité 120 du tapis intercalaire 33, de sorte que ce dernier présente, entre les rouleaux de renvoi 124 et 125, un brin 331 s'étendant selon la direction d'avancement Ma, puis, entre les rouleaux de renvoi 125 et 126, un brin 332 s'étendant perpendiculairement à la direction d'avancement Ma, puis, entre le rouleau de renvoi 126 et l'extrémité 120 du tapis intercalaire 33, un brin 333 s'étendant selon la direction d'avancement Ma. The motion compensation system 122 includes transverse deflection rollers 124, 125 and 126 arranged between the deflection roller 114 and the end 120 of the intermediate belt 33, so that the latter presents, between the return rollers 124 and 125 , a strand 331 extending in the direction of advance Ma, then between the return rollers 125 and 126, a strand 332 extending perpendicularly to the direction of travel Ma, then between the return roller 126 and the end 120 of the intermediate belt 33, a strand 333 extending in the direction of advance Ma.
II est précisé, à titre d'exemple, que les rouleaux de renvoi 123 et 124 sont voisins l'un de l'autre et sont situés approximativement au- dessus des rouleaux de déviation 113 et 114, que les rouleaux de renvoi 125 et 126 sont éloignés des rouleaux de renvoi 123 et 124, à l'opposé de la direction d'avancement Ma, que l'extrémité 120 du tapis intercalaire est dans le voisinage et au-dessus du rouleau de renvoi 123 et que le brin 330 s'étend entre et à distance des brins 331 et 333 du tapis intercalaire 33, l'extrémité 121 du tapis intercalaire 33 étant en conséquence situé entre les brins 331 et 333 du tapis intercalaire 33 dans le voisinage des rouleaux de renvoi 125 et 126. Ainsi, lorsque le chariot 105, qui porte la lame de coupe 7 et la lame d'écartement 25, est déplacé selon la direction d'avancement Ma, les longueurs des brins 330 et 333 varient en sens inverses de la même valeur, correspondant à celle de la course de l'arête de coupe 10. Dans le sens de l'avancement Ma de l'arête de coupe 10, la longueur du brin 330 augmente et la longueur du brin 333 diminue, et réciproquement dans le sens du retour. It is pointed out, by way of example, that the return rolls 123 and 124 are adjacent to each other and are situated approximately above the deflection rolls 113 and 114, that the return rollers 125 and 126 are away from the return rollers 123 and 124, opposite the feed direction Ma, that the end 120 of the intermediate belt is in the vicinity and above the return roller 123 and that the strand 330 is extends between and at a distance strands 331 and 333 of the intermediate belt 33, the end 121 of the intermediate belt 33 being accordingly located between the strands 331 and 333 of the intermediate belt 33 in the vicinity of the return rollers 125 and 126. Thus, when the carriage 105, which carries the cutting blade 7 and the spacer blade 25, is moved in the direction of advance Ma, the lengths of the strands 330 and 333 vary in opposite directions of the same value, corresponding to that of the stroke of the cutting edge 10. In the direction of advance Ma of the cutting edge 10, the length of the strand 330 increases and the length of the strand 333 decreases, and reciprocally in the direction of return.
La conséquence est que le brin supérieur 33a du tapis intercalaire 33, interposé entre la lame d'écartement 7 et la face supérieure 13 de l'incision 11, est immobilisé par rapport à cette face supérieure 13 de l'incision 11 (figure 2). Il ne se produit pas de frottement entre le tapis intercalaire 33 et le profilé 2. The consequence is that the upper run 33a of the intermediate belt 33, interposed between the spacer blade 7 and the upper face 13 of the incision 11, is immobilized with respect to this upper face 13 of the incision 11 (FIG. 2). . There is no friction between the intermediate belt 33 and the profile 2.
Selon une variante de réalisation des moyens d'écartement 24 illustrée sur la figure 8, le tapis intercalaire 33 et les équipements qui y sont associés sont supprimés et la lame transversale d'écartement 25 est remplacée par une lame transversale d'écartement 200 nue qui, par exemple, occupe substantiellement le même emplacement que celui qu'occupaient la lame transversale d'écartement 25 et les brins 33a et 33b du tapis intercalaire 33. According to an alternative embodiment of the spacer means 24 illustrated in FIG. 8, the intermediate belt 33 and the associated equipment are eliminated and the transverse spacer blade 25 is replaced by a transverse spacer strip 200 which is , for example, occupies substantially the same location as that occupied by the transverse spacer blade 25 and the strands 33a and 33b of the intermediate belt 33.
Ainsi, la lame transversale d'écartement 200, qui est disposée au-dessus de la lame transversale de coupe 7, est en partie engagée dans l'évidement 23 de la lame transversale de coupe 7 et présente une face inférieure 201 située à proximité de la surface transversale intermédiaire 19 de la lame transversale de coupe 7, un bord transversal inférieur d'extrémité 202 situé à proximité du talon 20 de l'ardillon 15 de la lame transversale de coupe 7. Thus, the transverse spacer blade 200, which is disposed above the transverse cutting blade 7, is partly engaged in the recess 23 of the transverse cutting blade 7 and has a lower face 201 located close to the intermediate transverse surface 19 of the transverse cutting blade 7, a lower transverse end edge 202 located near the heel 20 of the pin 15 of the transverse cutting blade 7.
La lame transversale d'écartement 200 comprend également un coin effilé 203 qui présente une face supérieure en pente 204 allant jusqu'à son bord transversal d'extrémité 202, ce dernier pouvant néanmoins être arrondi ou biseauté. The transverse spacer blade 200 also comprises a tapered corner 203 which has a sloping upper face 204 up to its transverse end edge 202, the latter may nevertheless be rounded or beveled.
Avantageusement, la face supérieure 204 de la lame transversale d'écartement 200 est substantiellement alignée avec la surface de sommet 16 de l'ardillon 15 de la lame transversale de coupe 7. Comme dans l'exemple précédent, la lame transversale d'écartement 200 est mobile en même temps que la lame transversale de coupe 7 selon la direction d'avancement Ma, mais n'est animée d'aucun mouvement transversal alternatif. Advantageously, the upper face 204 of the transverse spacer plate 200 is substantially aligned with the top surface 16 of the pin 15 of the transverse cutting blade 7. As in the previous example, the transverse spacer blade 200 is movable together with the transverse cutting blade 7 in the direction of advance Ma, but is not animated by any reciprocating transversal movement.
Lors du mouvement d'avance Ma de la lame transversale de coupe 10, la face supérieure 13 de l'incision 11 du profilé 2 glisse sur la surface terminale 17 du tranchant 18 et sur la surface de sommet 16 de l'ardillon 15. Puis, la face supérieure 13 de l'incision 11 du profilé 2 est prise en charge par la lame transversale d'écartement 200 et glisse sur la face supérieure 204 de cette dernière, sans subir d'effets transversaux. During the advance movement Ma of the transverse cutting blade 10, the upper face 13 of the incision 11 of the section 2 slides on the end surface 17 of the cutting edge 18 and on the top surface 16 of the barb 15. , the upper face 13 of the incision 11 of the section 2 is supported by the transverse spacer plate 200 and slides on the upper face 204 of the latter, without undergoing transverse effects.
Avantageusement, la lame transversale d'écartement 200 est traitée ou est pourvue d'un revêtement de sorte à réduire les frottements de la face supérieure 13 de l'incision 11 du profilé 2 sur sa face supérieure 204. Advantageously, the transverse spacer blade 200 is treated or is provided with a coating so as to reduce the friction of the upper face 13 of the incision 11 of the profile 2 on its upper face 204.
Afin d'éviter les frottements de la face inférieure 201 de la lame transversale d'écartement 200 contre la surface transversale intermédiaire 19 et les frottements du bord transversal d'extrémité 202 de la lame transversale d'écartement 200 contre le talon 20 de l'ardillon 15 de la lame transversale de coupe 7, un jeu est prévu entre la face inférieure 201 et la surface transversale intermédiaire 19 ainsi qu'entre le bord transversal d'extrémité 202 et le talon 20. In order to avoid the friction of the lower face 201 of the transverse spacer plate 200 against the intermediate transverse surface 19 and the friction of the transverse end edge 202 of the transverse spacer plate 200 against the heel 20 of the 5 of the transverse cutting blade 7, a clearance is provided between the lower face 201 and the intermediate transverse surface 19 as well as between the transverse end edge 202 and the heel 20.
Par ailleurs, aussi bien dans le cas de moyens d'écartement constitués de la lame transversale d'écartement 25 équipée du tapis intercalaire 33 que dans le cas de moyens d'écartement constitués de la lame transversale d'écartement 200 nue, l'ardillon transversal d'extrémité 15 de la lame de coupe 7, qui écarte la face supérieure 13 de l'incision 11 du profilé 2 immédiatement après la ligne de coupe et avant sa prise en charge par les moyens d'écartement, empêche la matière du profilé 2, en particulier l'extrémité de la lèvre 2a au début de la réalisation de l'incision 11, de pénétrer entre la lame transversale d'écartement et la lame transversale de coupe. Moreover, both in the case of spacer means consisting of the transverse spacer plate 25 equipped with the intermediate belt 33, and in the case of spacer means consisting of the transverse spacer strip 200, the barb crosswise end 15 of the cutting blade 7, which separates the upper face 13 of the incision 11 of the section 2 immediately after the cutting line and before its support by the spacer means, prevents the material of the profile 2, in particular the end of the lip 2a at the beginning of making the incision 11, to penetrate between the transverse spacer blade and the transverse cutting blade.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1653942 | 2016-05-02 | ||
| FR1653942A FR3050678A1 (en) | 2016-05-02 | 2016-05-02 | DEVICE AND METHOD FOR CUTTING A PROFILE AND CUTTING BLADE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2017191090A1 true WO2017191090A1 (en) | 2017-11-09 |
Family
ID=56148537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2017/060335 Ceased WO2017191090A1 (en) | 2016-05-02 | 2017-05-02 | Device and method for cutting a profiled section and cutting blade |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR3050678A1 (en) |
| WO (1) | WO2017191090A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4574673A (en) * | 1985-03-25 | 1986-03-11 | Pearl David R | Stiffened cutting blade with reversible replaceable edge member |
| JPH0482697A (en) * | 1990-07-20 | 1992-03-16 | Toyo Tire & Rubber Co Ltd | Manufacture of thin sheet made of rubber or synthetic resin elastomer |
| JPH0929700A (en) * | 1995-07-14 | 1997-02-04 | Bridgestone Corp | Method for cutting beltlike rubber member using high frequency cutting device |
| US20060196332A1 (en) * | 2004-12-23 | 2006-09-07 | Downing Daniel R | Anvil with vacuum width adjustment |
-
2016
- 2016-05-02 FR FR1653942A patent/FR3050678A1/en not_active Ceased
-
2017
- 2017-05-02 WO PCT/EP2017/060335 patent/WO2017191090A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4574673A (en) * | 1985-03-25 | 1986-03-11 | Pearl David R | Stiffened cutting blade with reversible replaceable edge member |
| JPH0482697A (en) * | 1990-07-20 | 1992-03-16 | Toyo Tire & Rubber Co Ltd | Manufacture of thin sheet made of rubber or synthetic resin elastomer |
| JPH0929700A (en) * | 1995-07-14 | 1997-02-04 | Bridgestone Corp | Method for cutting beltlike rubber member using high frequency cutting device |
| US20060196332A1 (en) * | 2004-12-23 | 2006-09-07 | Downing Daniel R | Anvil with vacuum width adjustment |
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| Publication number | Publication date |
|---|---|
| FR3050678A1 (en) | 2017-11-03 |
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