JP2009050981A - Scar processing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a scar processing device having simple structure and good operability, installable also in a small space, having a long service life of rotating cutters and capable of effectively applying appropriate scars on a band-shaped sheet. <P>SOLUTION: The scar processing device is provided with a rotating mechanism 10 capable of rotating a support shaft 7 at a predetermined angle and holding it and with a plurality of cutter holding devices 11 provided in the support shaft 7 and holding the rotating cutters 3, respectively. In a receiving roller 4, a portion receiving the rotating cutters 3 is formed of an elastic member. The cutter holding device 11 is provided with a base part 29 fitted to the outer peripheral face of the support shaft 7 so as to enable positional change; a support arm 30 having one end fixed to the base part 29, the other end extended to a portion in the vicinity of the receiving roller 4 and a flat cross section in the direction parallel with the support shaft 7; a holding part 31 provided at a free end of the support arm 30 and holding the rotating cutter 3; and a deformation adjusting screw 32 provided in the base part 29 and capable of adjusting deformation of the support arm 30 by being engaged with the support arm 30. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  In the present invention, a plurality of rotating blades having a large number of protrusions projecting from the outer peripheral portion are pressed against a belt-like sheet such as a packaging film during travel on a receiving roller to continuously scratch the belt-like sheet in a plurality of rows. The present invention relates to a scar processing device.

  Conventionally, as a scar processing device, a receiving roller is provided near a cutting blade of a slitter for cutting a belt-like sheet in a running direction and dividing it into a plurality of strips, and a base plate on a cross guide provided in a direction parallel to the receiving roller Can be moved forward and backward by disposing a sliding guide that extends in a direction perpendicular to the axis of the receiving roller between the base plate and the frame that rotatably supports the rotary cutter. In addition, there is a type in which a rotary cutter can be pressed against a receiving roller by attaching an air cylinder to a bracket provided on a base plate and connecting a rod of the air cylinder to a frame (see Patent Document 1 below).

  However, in such a scar processing device, a compressed guide with a required pressure can be supplied to each air cylinder that can be provided with a sliding guide or an air cylinder for each rotary blade and whose position can be changed in the axial direction of the receiving roller. It is necessary to prepare a power source, and an individual pressure adjustment valve is required to finely adjust the pressing force of each rotary blade to the receiving roller individually, so that the apparatus becomes complicated and its occupied space increases. . For this reason, the scar processing device cannot be installed in a limited space near the slitter, or even if it can be provided near the slitter, the operability such as replacement and adjustment of the rotary blade is deteriorated. Also, the equipment becomes expensive. Furthermore, there are variations in the sliding resistance of the sliding guide of each rotary blade and the sliding part of the air cylinder, or the compressed air pressure supplied to the air cylinder. Since it may change, a large error is likely to occur in the pressing force applied to the rotary blade. Therefore, it is difficult to always obtain an appropriate scar by applying an accurate pressing force to each rotary blade.

Further, when the outer peripheral portion of the receiving roller is made of metal so that the tip of the protrusion of the rotary blade directly contacts the outer peripheral surface of the receiving roller, noise increases and the traveling speed of the belt-like sheet cannot be increased. Moreover, the blunting of the protrusion is accelerated and the life of the rotary blade is shortened.
Japanese Utility Model Publication No. 3-109790

  Therefore, the present invention provides a scratch processing apparatus that has a simple structure, is easy to operate, can be installed in a relatively small space, has a long life of a rotary blade, and can effectively make an appropriate scratch on a belt-like sheet. It is an issue.

  The present invention provides a scar processing device that continuously presses a plurality of rotating blades having a large number of protrusions projecting on an outer peripheral portion against a traveling belt-like sheet on a receiving roller to continuously mark the marks in a plurality of rows. A support shaft provided in parallel to the receiving roller on the opposite side of the belt with the belt-like sheet, means for supporting the support shaft rotatably about its longitudinal axis, and holding the support shaft rotated by a predetermined angle A rotating mechanism that can be operated, and a blade holding device that individually holds the rotating blade provided on the support shaft, and a portion that receives the rotating blade of the receiving roller is formed by an elastic member, and the blade holding The apparatus includes a base portion that is removably mounted on the outer peripheral surface of the support shaft, and a transverse crossing that is flat in a direction parallel to the support shaft, with one end fixed to the base portion and the other end extending near the receiving roller. A support arm having a surface; and the support A blade mounting portion for mounting the rotary blade provided at a free end of the blade, and a deflection adjusting screw provided on the base portion that can be engaged with the support arm to adjust the deflection of the support arm. It is characterized by.

  When the outer peripheral surface of the receiving roller against which the rotary blade is pressed is formed of a resilient member such as rubber, the outer peripheral surface is more easily damaged than that made of metal, and when the outer peripheral surface of the receiving roller is damaged, an appropriate scar is obtained. In order to facilitate this, the receiving roller is fitted on the rotating shaft and the outer peripheral surface of the rotating shaft. It is good to comprise with the cylindrical body made from the elastic member, and the means to hold | maintain this cylindrical body in the predetermined position on the said rotating shaft, respectively.

  According to the present invention, the height of the rotary blade relative to the receiving roller can be individually changed by turning the deflection adjusting screw, and thereby the pressing force of the rotary blade against the receiving roller can be individually adjusted. In addition, by rotating the support shaft by the rotation mechanism, it is possible to press the rotary blades against the outer circumference of the receiving roller all at once, and by changing the size of the rotation angle of the support shaft, the pressing force of each rotary blade is simultaneously pressed. In addition, the size can be changed according to the rotation angle of the support shaft. Therefore, it is not necessary to intervene a conventional sliding motion mechanism in order to hold the rotating blade so as to be pressed against the receiving roller, and in order to apply a pressing force to the rotating blade, a conventional driving device such as an air cylinder. This eliminates the adverse effect on the pressing force of the rotary blade due to variations and fluctuations in sliding resistance and driving force. Therefore, by holding the support shaft rotated by a predetermined angle by the rotation mechanism, the pressing force of each rotary blade can always be maintained at a predetermined size, and appropriate scratches can be made simultaneously at a plurality of locations on the belt-like sheet. . Moreover, the structure of the blade holding device is simplified and the occupied space is reduced. Moreover, since the part which receives a rotary blade of a receiving roller was formed with the elastic member, the noise during a process is improved significantly and the lifetime of a rotary blade is extended.

  When the receiving roller is constituted by a rotating shaft, a cylindrical body made of a resilient member that fits on the outer peripheral surface of the rotating shaft, and a means for holding the cylindrical body at a predetermined position on the rotating shaft, respectively, a resilient member Even if the outer peripheral surface of the cylindrical body made in this way is damaged, it is only necessary to remove the cylindrical body from the rotating shaft and replace it with a new one, so that the maintenance of the receiving roller is easy and economical.

  FIG. 1 is a schematic front view of a belt-like sheet supply device including a scar processing device and a slitter according to an embodiment of the present invention, and FIG. 2 is a schematic side view of the device shown in FIG. The belt-like sheet S is made of a packaging film and is supplied to a known slitter 2 through a scar processing device 1. The scar processing device 1 continuously presses a plurality of rotary blades 3 having a large number of protrusions protruding on the outer peripheral portion against the belt-like sheet S on the receiving roller 4 so as to be continuously provided at a plurality of locations in the width direction of the belt-like sheet S. Scratches F for easy opening are made in a row. The band-shaped sheet S provided with the scar F is cut in the longitudinal direction by a plurality of cutting blades 5 arranged at a required place when passing through the slitter 2 and divided into a plurality of band-shaped sheets Sc having the scar F at the edge. Is done. The divided belt-like sheet Sc is supplied to a winding device (not shown) through the guide roller 6 and wound.

  The receiving roller 4 and the guide roller 6 are rotated by a rotational driving force transmitted from a motor (not shown) to pulleys 4a and 6a provided at one ends of the receiving roller 4 and the guide roller 6, respectively. The rotary blade 3 can be driven in the direction of the arrow A1 in FIG. 2 and rotates in the direction opposite to the rotation direction of the receiving roller 4 following the rotation of the receiving roller 4. In order to extend the life of the rotary blade 3 and reduce the noise, the portion of the receiving roller 4 that receives the rotary blade 3 is formed of a resilient member.

  The scar processing device 1 supports a support shaft 7 provided in parallel to the receiving roller 4 on the opposite side of the receiving roller 4 across the belt-like sheet S, and the support shaft 7 so as to be rotatable about its longitudinal axis. The bearings 9a and 9b provided on the pair of machine frames 8 and 8, the rotating mechanism 10 capable of holding the support shaft 7 by rotating it by a predetermined angle, and the rotary blade 3 provided on the support shaft 7 are individually provided. And a plurality of blade holding devices 11 to be held.

  As shown in FIG. 3, the rotating mechanism 10 includes a worm gear 12 fixed to one end of the support shaft 7, a worm 14 meshing with the worm gear 12 and rotatably supported by a bearing device 13, and a handle 15 attached to the worm 14. The transmission shaft 16 transmits the rotational force. In order to stop the rotation of the support shaft 7 at a predetermined angle with this rotation mechanism 10, a locking piece 17 is fixed in the vicinity of the end of the support shaft 7 and is rotated to a bracket 18 fixed to the machine frame 8. The angle adjusting screw 19 is screwed, and the bracket 18 is disposed so that the tip of the rotation angle adjusting screw 19 contacts the locking piece 17. Further, a clamp mechanism 20 for fixing the transmission shaft 16 is provided in order to prevent the worm 14 from rotating accidentally due to an erroneous operation after adjusting the rotation angle of the support shaft 7.

  The clamp mechanism 20 includes an arm member 21 fixed to the machine casing 8, a hole provided near the tip of the arm member 21, and a slit 22 reaching the tip of the arm member 21 from this hole. The arm member 21 is divided into two end portions 21a and 21b, and a bolt 23 that passes through the one end portion 21a and is screwed into the other end portion 21b. Thus, the transmission shaft 16 can be clamped and fixed by the tip portions 21 a and 21 b divided into two parts of the arm member 21.

  As shown in FIG. 4, the receiving roller 4 includes a rotating shaft 24, a cylindrical body 25 made of an elastic member that fits on the outer peripheral surface of the rotating shaft 24, and the cylindrical body 25 on the rotating shaft 24. In this embodiment, this holding means includes a flange portion 24a provided at one end of the rotating shaft 24 and a screw formed at the other end of the rotating shaft 24. 24b and a cylindrical spacer 26 fitted on the outer peripheral surface of the rotary shaft 24, between the flange 24a and the cylindrical body 25, between the cylindrical bodies 25, and between the cylindrical body 25 and the screws 24b, The lock nut 27 is attached to the screw 24b. When the surface of the cylindrical body 25 hurts during long-term use and needs to be replaced with a new one, the cylindrical bearing holding member 28 indicated by a two-dot chain line attached to the machine frame 8 is used. The lock nut 27 is removed from the frame 8, the lock nut 27 is removed from the support shaft 7, the cylindrical body 25 and the spacer 26 are removed from the support shaft 7 in the axial direction, taken out through the hole 8 a provided in the machine frame 8, and then taken out. A new cylindrical body 25 is attached to the rotating shaft 24 by the reverse procedure. Although omitted in FIG. 4, the pulley 4 a shown in FIG. 1 is fixed to the left end of the rotating shaft 24.

  As shown in FIG. 5, the blade holding device 11 has a base 29 attached to the outer peripheral surface of the support shaft 7 so as to be repositionable, and one end fixed to the base 29 and the other end extended near the receiving roller 4. The support arm 30, the blade mounting part 31 for mounting the rotary blade 3 provided at the free end of the support arm 30, and the base 29 that can be engaged with the support arm 30 to adjust the deflection of the support arm 30. And a deflection adjusting screw 32 provided.

  The base 29 includes a fastening member 33. One end of the fastening member 33 is pivotally attached to one end of the base portion 29 by a pin 34 parallel to the support shaft 7, so that it can swing around the pin 34, and another end thereof is attached to the base portion 29. It can be opened as shown by the chain line. The fastening member 33 is closed as indicated by a solid line, and the bolt 35 is passed from below through a hole provided at the free end of the fastening member 33, and the screw portion of the bolt 35 is screwed into the screw hole formed in the base portion 29. By rotating in the tightening direction, the base 29 and the tightening member 33 can be firmly clamped with the outer peripheral surface of the support shaft 7 interposed therebetween, whereby the base 29 can be fixed at a required position on the support shaft 7. Further, the base 29 can be moved along the outer peripheral surface of the support shaft 7 by loosening the bolt 35 by rotating it in the direction opposite to that during tightening. Therefore, the base 29 is mounted on the support shaft 7 so that the position can be changed, and the blade holding device 11 can move along the support shaft 7 to change the pressing position of the rotary blade 3 against the receiving roller 4. In addition, the blade holding device 11 can remove the bolt 35 from the support shaft 7 when necessary.

  As shown in FIG. 6, the support arm 30 has a flat cross section parallel to the support shaft 7, so that the support arm 30 is easily bent in the vertical direction, and the horizontal deflection can be ignored. In this embodiment, it is made of spring steel, but other steel materials having appropriate elastic limits and fatigue limits may be used as necessary.

  The deflection adjusting screw 32 is formed of a bolt with a knob, and is screwed into the bracket 37 so that the upper surface of the support arm 30 can be pushed at a predetermined position between the fixed end and the free end. The bracket 37 is formed in a gate shape, and a pair of lower portions thereof are fitted into vertical grooves formed on both side surfaces of the base portion 29 and are fixed by pins 38 penetrating the base portion 29.

  As shown in FIG. 5, one end of the support arm 30 is fixed by a bolt 36 along a mounting surface 29 a formed on the rear part on the upper side of the base 29. At the front of the mounting surface 29a of the support arm 30 of the base 29, when the free end of the support arm 30 is bent in a downward direction, the bottom surface is gradually directed forward so that the support arm 30 can be received. A groove 29b is formed so as to be deep.

  In order to make it possible to easily finely adjust the pressing position of the rotary blade 3 against the belt-like sheet S on the receiving roller 4 in the width direction of the belt-like sheet S, a guide having a guide surface 39a in a direction parallel to the support shaft 7 is provided. The member 39 is fixed to the free end of the support arm 30, the blade mounting portion 31 is slidably mounted on the guide surface 39a of the guide member 39, and the blade mounting portion 31 is moved along the guide surface 39a to be attached to the required position. A pressing position adjusting screw 42 is provided. In this embodiment, the blade mounting portion 31 includes a pair of front and rear bases 41 and a pair of left and right arms 41 a that are formed on the pair of front and rear bases 41 and hold both ends of the central axis 40 of the rotary blade 3. The guide member 39 is fixed to the support arm 30 with a bolt 43, and the pressing position adjusting screw 42 is screwed into a convex portion 39 b provided on the guide member 39.

  As shown in FIG. 7, a rotating handle 42 a is fixed to one end of the pressing position adjusting screw 42, a scissor member 42 b is fixed to the other end, and the handle 42 a and the scissor member 42 b are connected to the blade mounting portion 31. Since the pressing position adjusting screw 42 is constrained in the axial direction with respect to the blade mounting portion 31 by being arranged so as to be sandwiched between the outer sides of both sides, when the pressing position adjusting screw 42 is rotated by operating the handle 42a, this The pressing position adjusting screw 42 moves in the axial direction with respect to the guide member 39, and the blade mounting portion 31 moves with respect to the guiding member 39 together with the pressing position adjusting screw 42.

  The rotary blade 3 includes a cylindrical round blade holder 45 that is rotatably mounted on a central shaft 40 via a bearing 44, and a plurality of round blades 46 that are mounted on the round blade holder 45. Both ends of the central shaft 40 are fixed to the pair of arms 41a with nuts 47. In order to hold a plurality of round blades 46 firmly at a predetermined interval by the round blade holder 45, a flange 45a is formed on one end of the round blade holder 45, and a screw portion 45b is formed on the outer peripheral surface of the other end. Then, a plurality of round blades 46 are fitted on the outer peripheral surface of the round blade holder 45 so that the disc-shaped spacers and the round blades 46 are alternately arranged, and further, after the spacers are fitted, a lock nut 48 is screwed onto the screw portion 45b. A plurality of round blades 46 and spacers are sandwiched and tightened between the lock nut 48 and the flange 45a.

  As shown in FIG. 5, a large number of saw blades 46 a are formed on the outer periphery of the round blade 46, and the cutting edge of the blade 46 a is parallel to the central axis of the round blade 46. In this embodiment, the blade 46 a is a protrusion protruding from the outer peripheral portion of the rotary blade 3. The adjacent round blades 46 are attached to the round blade holder 45 while being shifted in the rotational direction by half the pitch of the blades 46a.

  In order to continuously apply a scratch to a required position of the belt-like sheet S by the scratch processing apparatus 1 configured as described above, first, the following preparation is made.

  That is, the blade holding device 11 is positioned in the axial direction of the support shaft 7 so that the rotary blade 3 can be pressed against the required position of the belt-like sheet S on the receiving roller 4. For this purpose, the bolt 35 is loosened to move the base 29 to a required position, and then the bolt 35 is tightened again to fix the base 29 to the support shaft 7. Further, in the receiving roller 4, when the outer peripheral surface of the cylindrical body 25 made of a resilient member is scratched, the cylindrical body 25 is fitted at a position corresponding to the rotary blade 3 on the outer peripheral surface of the rotating shaft 24. . If necessary, the position of the rotary blade 3 is finely adjusted in the width direction of the belt-like sheet S by turning the pressing position adjusting screw 42. The fine adjustment by the pressing position adjusting screw 42 may be performed immediately after the belt-like sheet S is started during traveling, and is convenient for accurately adjusting the position where the scar is applied in accordance with the cutting position of the belt-like sheet by the slitter 2. .

  Further, when the support shaft 7 is rotated in the direction indicated by the arrow A2 in FIG. 2 by the rotation mechanism 10 and the rotary blades 3 are pressed against the belt-like sheet S as shown by the solid line in FIG. The rotation angle of the support shaft 7 is adjusted so that the force has a required magnitude.

  In order to rotate the support shaft 7 by the rotation mechanism 10, the clamp by the clamp mechanism 20 is released to allow the transmission shaft 16 to rotate, and then the handle 17 is engaged until the locking piece 17 on the support shaft 7 contacts the rotation angle adjustment screw 19. The transmission shaft 16 is fixed by the clamp mechanism 20. In order to increase the pressing force of each rotary blade 3, the tip of the rotation angle adjusting screw 19 is retracted from the bracket 18 in FIG. 3 to increase the rotation angle of the support shaft 7. In order to reduce the pressing force of each rotary blade 3, the tip of the rotation angle adjusting screw 19 is moved forward with respect to the bracket 18 to reduce the rotation angle of the support shaft 7.

  When scratches applied to a plurality of portions of the belt-like sheet are not uniform due to a difference in radius from the center of each of the plurality of rotary blades 3 to the tip of the protrusion or a difference in the number of round blades pressed simultaneously. Adjusts the pressing force of the rotary blade 3 individually by means of the bending adjustment screw 32 so that the scratches at each location are uniform. For this purpose, the support shaft 7 is rotated and fixed by the rotation mechanism 10 until the locking piece 17 contacts the rotation angle adjustment screw 19, and the bending adjustment screw 32 is turned to adjust the amount of bending of the support arm 30. To do. When the deflection adjusting screw 32 is turned to advance the tip toward the support arm 30, the pressing force of the rotary blade 3 increases. When the deflection adjusting screw 32 is turned in the reverse direction and its tip is retracted from the support arm 30, the pressing force of the rotary blade 3 is reduced. When the adjustment of the pressing force of the rotary blade 3 is completed, the support shaft 7 is rotated by the rotation mechanism 10 so that the rotary blade 3 is retracted from the receiving roller 4 as indicated by a chain line in FIG.

  When the above preparation is completed, the receiving roller 4 and the guide roller 6 are rotationally driven to run the belt-like sheet S, and the support shaft 7 is rotated by the rotation mechanism 10 in the same manner as in the preparation, so that each rotary blade 3 is shown in FIG. Is pressed against the belt-like sheet S as indicated by a solid line. Then, each support arm 30 bends in the direction in which the free end rises, and the rotary blade 3 rotates while pressing the belt-like sheet S elastically on the receiving roller 4 with a pressing force according to the amount of bending. At this time, the support shaft 7 is held by being rotated by a predetermined angle by the rotation mechanism 10, and there is no sliding mechanism or drive device between the support shaft 7 and the rotary blade 3. The error in pressing force is small. Moreover, there is no fear that the pressing force changes in the middle as in the prior art.

  When the magnitude of the pressing force is appropriate, the protrusions of the rotary blade 3 can appropriately penetrate the belt-like sheet S, and easily openable scratches can be imparted to the belt-like sheet S. Further, the cylindrical body 25 fitted to the rotating shaft 24 of the receiving roller 4 is elastically deformed even when the cutting edge of the saw blade-like round blade 46 of the rotary blade 3 is pressed when its hardness is appropriate. There is little damage. In this embodiment, the cylindrical body 25 is formed of urethane rubber having a Shore hardness of 70 degrees. The hardness of the cylindrical body 25 is preferably in the range of 65 degrees to 95 degrees.

  For example, in the rotary blade 3 shown in FIG. 5 and FIG. 7, the six round blades 36 each have a spacing of 2 mm between adjacent blade edges and a thickness of 0.25 mm, and the vicinity of the center. The rotary blade 3 is formed by setting the spacer thickness between the two round blades 36 to 1 mm and the spacer thickness between the other round blades 36 to 0.75 mm. Two round blades 36 in the vicinity are arranged so as to sandwich the cutting position of the slitter cutting blade in the middle, and a good easy-opening scar is made on a belt-like sheet made of a packaging film having a thickness of 38 microns. did it. The thickness of the round blade 36 of the rotary blade 3 is changed to 1 mm, a spacer having a thickness of 1 mm is inserted between the two round blades 36 near the center, and a spacer is inserted between the other round blades 36. What used the rotary blade as a contact with each other's side face without using can be used.

It is a schematic front view of the strip | belt-shaped sheet supply apparatus containing the scar processing apparatus and slitter which concern on one Example of this invention. It is a schematic side view of the apparatus shown in FIG. It is a side view of a rotation mechanism. It is a longitudinal cross-sectional view of a receiving roller. It is a longitudinal cross-sectional view of a blade holding device. It is BB arrow sectional drawing in FIG. It is a front view of a blade mounting part.

Explanation of symbols

F Scratch S Band-shaped sheet 1 Scratch processing device 2 Slitter 3 Rotating knife 4 Receiving roller 7 Support shaft 10 Rotating mechanism 11 Blade holding device 17 Locking piece 18 Bracket 19 Rotating angle adjusting screw 20 Clamp mechanism 24 Rotating shaft 25 Cylindrical body 26 Spacer 29 Base 30 Support arm 31 Blade mounting portion 32 Deflection adjusting screw 39 Guide member 41 Holding body 42 Pressing position adjusting screw 45 Round blade holder 46 Round blade

Claims (2)

  A scratch processing apparatus for continuously scratching a plurality of rotating blades having a plurality of protrusions projecting on an outer peripheral portion on a running belt-like sheet on a receiving roller to continuously make a scar in a plurality of rows, the belt of the receiving roller A support shaft provided in parallel to the receiving roller on the opposite side across the sheet, means for rotatably supporting the support shaft about its longitudinal axis, and the support shaft rotated by a predetermined angle can be held. A rotation mechanism; and a blade holding device that individually holds the rotary blade provided on the support shaft, and a portion of the receiving roller that receives the rotary blade is formed of an elastic member. A base portion that is removably mounted on the outer peripheral surface of the support shaft, and has a flat cross section in a direction parallel to the support shaft, with one end fixed to the base portion and the other end extending near the receiving roller. Support arm and freedom of said support arm A blade mounting portion for mounting the rotary blade, and a deflection adjusting screw provided on the base portion that can be engaged with the support arm to adjust the deflection of the support arm. Scratch processing equipment.   The receiving roller is configured by a rotating shaft, a cylindrical body made of a resilient member that fits on an outer peripheral surface of the rotating shaft, and a means for holding the cylindrical body at a predetermined position on the rotating shaft. The scar processing apparatus according to 1.

Images