JP2008188713A - Cutting device for straight member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting device for a straight member, which easily cuts a straight member without breaking it, and is composed so as to prevent scattering of dust generated during cutting to the exterior, in regard to a cutting device rotating a rotary cutter at a high speed to cut a straight member such as a wiring duct. <P>SOLUTION: A work cutting part 3 is shielded by a fixed side cover 11 covering the rotary cutter 2 in a fixed position, and a slide cover 31 provided in a work mounting table 34 side. A rotating direction of the rotary cutter with respect to the straight member W in a cutting position is in a direction from a bottom face to a top face of the straight member W mounted on the mounting table, and torque of the rotary cutter is relieved in an upward direction from the work mounting table. It is composed such that dust preventing means 4 with a fluffy brush attached to a plate spring like guide are provided on both of an inlet part and an outlet part to be used as insertion openings for the straight member. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cutting device that cuts a straight member such as a wiring duct into an arbitrary length, and in particular, prevents scattering of dust generated at the time of cutting and can be cut to an accurate dimension without damaging the member. The present invention relates to a cutting device for straight strip members.

  Generally, resin wiring ducts are used for control panel wiring and indoor wiring. The wiring duct is used by cutting a long resin extruded product into a predetermined length and can be manually cut using a cutting tool such as a nipper or a cutter.

  In addition, a cutting device that mechanically cuts a straight member by rotating a cutting blade (rotating cutter) with a drive motor has been developed, and the applicant makes a straight member such as a wiring duct to a predetermined length. A cutting apparatus capable of cutting has already been filed (for example, see Patent Document 1).

Furthermore, a cutting device that is a cutting device for pipes, rods, etc. and that is provided with a cover member to prevent dust from being scattered during cutting has already been disclosed (for example, see Patent Document 2).
Japanese Unexamined Patent Publication No. 7-195295 (page 1-4, FIG. 2) Japanese Utility Model Publication No. 5-78462 (page 1-5, FIG. 1)

  Resin wiring ducts can be cut manually, but as the quantity increases, the work time increases, and injuries and accidents occur due to the use of cutting tools such as nippers and cutters. There is a problem of doing.

  Further, when the straight member is mechanically cut using the cutting device, the straight member is not cracked or damaged during the cutting operation, and dust from the opening through which the straight member to be cut is inserted. It is necessary to prevent scattering. Moreover, if the shape of the straight member to be cut is constant, a sealed cutting portion having an opening shape that matches the outer shape of the straight member can be formed, and scattering of dust and the like generated during cutting can be prevented.

  However, the wiring duct has various sizes, and the dimensions are not constant. Therefore, in the conventional cutting device, the guide block provided with the opening groove | channel corresponding to those various sizes is arrange | positioned, and there exists a possibility that the dust which arises at the time of a cutting may scatter from the groove part which the duct is not penetrated.

  In particular, when cutting a straight member such as a wiring duct inserted into the cutting portion by rotating the rotary cutter at a high speed, due to the problem of cracking due to the impact of the rotary cutter and the wind pressure generated by the high-speed rotation, There arises a problem that a large amount of dust scatters from the cut portion.

  The purpose of the present invention is to cut the straight member such as a wiring duct easily without damaging the straight member in a cutting device for cutting the straight member such as a wiring duct by rotating the rotary cutter at a high speed in order to eliminate the above-mentioned problems. An object of the present invention is to provide a straight member cutting device configured to prevent dust generated during cutting from being scattered outside.

  In order to achieve the above object, the invention according to claim 1 is a rotary cutter in a fixed position for cutting a straight member such as a duct, and the straight member placed and cut by the rotary cutter. A straight member cutting device including a workpiece mounting table that is slidable to a position, and a workpiece cover cutting portion by a fixed cover that covers a rotary cutter at a fixed position and a slide cover provided on the workpiece mounting table side. The rotation direction of the rotary cutter with respect to the workpiece at the position to be cut is set as the rotation direction from the lower surface to the upper surface of the workpiece placed on the mounting table, and the rotational force of the rotary cutter is upward from the workpiece mounting table. It is characterized by the direction to escape.

  According to the first aspect of the invention having the above-described configuration, the straight member is cut at a position where the rotation direction of the rotary cutter is upward. Does not damage the parts. Moreover, since it cuts while sliding so that a straight member may be pushed in into the rotary cutter of a fixed position, the cutting device of the straight member which can be performed reliably, confirming cutting operation can be obtained.

  According to a second aspect of the present invention, an exhaust duct is provided at an upper portion of the fixed cover, and is connected to a suction means via a suction pipe, and a rectifying plate that aligns the accompanying airflow of the rotary cutter in the suction flow direction of the exhaust duct. Is provided so that most of the dust generated during cutting by the upward rotation of the rotary cutter is sucked.

  According to the invention according to claim 2 having the above-described configuration, the dust scattered on the accompanying airflow generated by the upward high-speed rotation of the rotary cutter can be reliably recovered through the exhaust duct provided in the upper portion of the slide cover. Become.

  The invention according to claim 3 is characterized in that a sound absorbing member is mounted at a predetermined position inside the fixed side cover or the slide cover.

  According to the invention which concerns on Claim 3 which has said structure, the noise of the high-pitched sound area | region generated when a rotary cutter rotates at high speed can be absorbed, and workability | operativity can be kept favorable.

  According to a fourth aspect of the present invention, the work mounting table is disposed on a slide table that is slidably supported on the upper plate of the apparatus via a slide support means and can be manually pushed, and on the lower surface of the slide table. A brush member is attached, and the gap between the upper plate of the apparatus and the work mounting table is filled.

  According to the invention according to claim 4 having the above-described configuration, the gap between the lower surface of the sliding table that slides and the upper surface of the apparatus is sealed, so that it is possible to prevent the dust from jumping out and the noise leakage at the same time. Can be kept good.

  In the invention according to claim 5, the slide cover is provided with an inlet portion and an outlet portion that serve as an insertion port for the straight member, and a fluff-like brush is attached to a leaf spring-like guide at both the inlet portion and the outlet portion. The dust-proofing means is provided to prevent scattering of dust generated during cutting.

  According to the invention which concerns on Claim 5 which has said structure, since both the inlet part and outlet part used as a straight member insertion port are sealed via the dust prevention means provided with a fluff-like brush, straight member insertion In addition to preventing dust from popping out of the mouth, it is also possible to prevent noise leakage at the same time, thereby maintaining a better working environment.

According to a sixth aspect of the present invention, there is provided a locking means for selecting permission and non-permission of sliding movement of the slide table in accordance with the presence or absence of the straight member on the workpiece mounting table.

  According to the invention of claim 6 having the above configuration, when the straight member is not present on the workpiece mounting table, the locking means is not released, and the slide movement of the slide table and the workpiece mounting table is permitted. In the case where the cutting operation is unnecessary, the device can be a safe straight-line member cutting device without sliding.

  According to the present invention, in a cutting device that cuts a straight member such as a wiring duct, the workpiece cutting portion is shielded by the fixed side cover that covers the rotary cutter at the fixed position and the slide cover provided on the workpiece mounting table side. In addition, the rotation direction of the rotary cutter with respect to the workpiece at the cutting position is the rotation direction from the lower surface to the upper surface of the workpiece placed on the mounting table, and the rotational force of the rotary cutter escapes upward from the workpiece mounting table. Therefore, it is possible to obtain a straight member cutting device that can be easily cut without damaging the straight member and that can reliably cut off dust and leak noise.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a straight member cutting device according to the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 and 2, the straight member cutting device K according to the present invention inserts a straight member W such as a wiring duct so as to penetrate the cutting part 3, and is in a fixed position inside the device main body 1. It is a cutting device cut | disconnected by the rotary cutter 2 with which it is mounted | worn.

  Although the rotary cutter 2 may be directly connected to the drive motor and driven to rotate directly, in the present embodiment, the drive is transmitted from the drive motor M1 installed inside the apparatus main body via the belt BL.

  The straight strip member W is placed on the work placement table 34 on the slide table 30. The slide table 30 is supported via a slide support means 33 attached to the apparatus main body 1, and is slidable on the upper plate 10 of the apparatus main body 1 using, for example, a slide guide or a linear guide. It is configured.

  In the present embodiment, as the slide support means 33, four slide support means 33A, 33B, 33C, and 33D having linear bearings that slide along the shaft are provided as shown in FIG. . With this configuration, the slide table 30 can be slid in the horizontal direction by arranging the shaft horizontally.

  Two slide support means 33A, 33B, 33C, and 33D are provided on each side of the slide table 30 with the cutting part 3 interposed therebetween, and the load to be supported is divided into four equal parts. Therefore, a relatively small slide support means 33 can be adopted, and a compact device design is possible.

  On the slide table 30, a work mounting table 34 and a slide cover 31 that covers the cutting unit 3 are mounted. In addition, the slide cover 31 is provided with an inlet portion 32A and an outlet portion 32B that serve as the insertion port 32 for the straight member W.

Positioning means including a fastening member 36 and a stopper ST is disposed on the workpiece mounting table 34. The fastening member 36 is loosened to move the stopper ST, and the fastening member 36 is tightened at a predetermined position to fix the stopper ST. This is a fixed configuration. Further, the straight member W can be fixed at a predetermined dimension position via a scale provided on the workpiece mounting table 34. For this purpose, the straight member W is inserted so as to penetrate the cutting part 3 and pressed against the stopper ST to fix the position thereof. After that, the rotary cutter 2 is driven and the slide table 30 is slid to slide the straight member W. Can be cut with a predetermined dimension.

  The slide cover 31 is slidable together with the slide table 30 in the direction of the arrow D1 in the figure, and a fixed side cover 11 that houses the slide cover 31 is provided at the back in the slide direction. The fixed side cover 11 is configured to be covered regardless of the slide position of the slide cover 31 that slides, and the cutting portion 3 can be integrally shielded by the slide cover 31 and the fixed side cover 11. . Further, an exhaust duct 12 is provided at the upper rear portion of the fixed side cover 11 and connected to the suction means 14 via the suction pipe 13. Further, a rectifying plate 17 is provided in the horizontal direction inside the fixed side cover 11 located below the exhaust duct 12. With this rectifying plate 17, the accompanying airflow of the rotary cutter 2 can be rectified in the suction flow direction of the exhaust duct 12, and most of the dust generated during cutting by the upward rotation of the rotary cutter 2 is sucked.

  That is, the straight member cutting device K according to the present invention shields the workpiece cutting portion by the fixed cover 11 that covers the rotary cutter 2 at the fixed position and the slide cover 31 provided on the workpiece mounting table 34 side. The rotational direction of the rotary cutter 2 with respect to the workpiece at the cutting position is the rotational direction from the lower surface to the upper surface of the workpiece placed on the placement table 34, and the rotational force of the rotary cutter 2 is upward from the workpiece placement table 34. The direction to escape to.

  The rotary cutter 2 rotates in the direction of the arrow D2 in the figure, and when the cutting portion 3 is slid to the rotary cutter 2 to perform a cutting operation, the rotary cutter 2 is cut at a portion rotating upward. I have to. Further, the accompanying airflow due to the rotation of the rotary cutter 2 is rectified by the rectifying plate 17 in the direction of arrow D3 in the figure and is discharged from the exhaust duct 12. At this time, by applying the suction flow of the suction means 14, it is possible to suck and discharge almost all of the dust generated at the time of cutting on the accompanying airflow.

  Moreover, although some dust accumulates in the apparatus lower part inside a cutting part, the dust which falls is dropped to the apparatus front side from the inclination board 15 installed in the lower part of the rotary cutter 2, and the outlet 16 provided in the apparatus front side is provided. Can be taken out from. However, since most of the generated dust is discharged from the exhaust duct 12 as described above, the amount of dust accumulated in the cut portion is very small, and the maintenance cycle can be lengthened.

  The straight member W is inserted into the cutting portion 3 from an insertion port 32 provided in the slide cover 31. The insertion port 32 includes an inlet portion 32A and an outlet portion 32B, and the straight member W inserted through the inlet portion 32A passes through the slide cover 31 and exits from the outlet portion 32B. Further, a workpiece mounting table 34 is extended on the front side of the inlet portion 32A and the rear side of the outlet portion 32B, and passes through the cutting portion 3 including the inlet portion 32A and the outlet portion 32B so as to penetrate the workpiece mounting table. The straight strip member W can be placed on 34.

  Further, in order to seal the inlet portion 32A and the outlet portion 32B, which are openings through which the straight member W is taken in and out, dustproof means 4 each having a fluffy brush attached to a leaf spring-like guide is provided. If it is this structure, scattering of the dust which arises in the case of a cutting | disconnection can be prevented, and a noise can be reduced.

Further, when the brush member 37 is mounted on the lower surface of the slide table 30 and the gap between the upper plate 10 of the apparatus and the slide table 30 is filled, the slide table 3 that slides and moves.
Since the gap between the lower surface of 0 and the upper surface of the apparatus can be sealed, it is possible to prevent dust from popping out and noise leakage at the same time, and to maintain a good working environment.

  Furthermore, when a sound absorbing member is attached to a predetermined position inside either the fixed cover 11 or the slide cover 31 that shields the cutting portion 3, the noise in the high sound region generated by the rotation of the rotary cutter 2 is reduced. This is preferable. Further, when the cutting portion cover is constituted by the inner cover and the outer cover, they may be attached to the inner surface of the inner cover. Therefore, in this embodiment, sound absorption is performed at a predetermined position inside the slide cover 31 corresponding to the inner cover. The member 35 is mounted. By adopting a configuration in which the sound absorbing member 35 is mounted inside the cover that shields the cutting portion 3 in this way, it is possible to reduce the high-frequency noise generated when the rotary cutter 2 rotates at a high speed. The working environment can be kept good. The part where the sound absorbing member 35 is mounted is preferably near the lower part behind the slide cover 31.

  As shown in the plan view of FIG. 3, the workpiece mounting table 34 is set as the standby position 34A before the cutting operation, and the straight member W is pierced through the insertion port 32 and then slid in the arrow D4 direction (same as the D1 direction). Then, the workpiece mounting table 34 is slid and moved to the cutting position 34B. By this sliding movement, the cutting part 3 passes through the rotary cutter 2 part and the cutting of the straight member W is completed.

  In order to be able to slide while avoiding interference with the rotary cutter 2 fixed to the apparatus, the upper plate 10, the slide table 30, and the workpiece mounting table 34 have an opening groove 6 that avoids interference with the rotary cutter 2. Are provided. Further, a substantially upper half of the rotary cutter 2 is protruded upward from the upper plate 10 and the workpiece mounting table 34.

  Therefore, when the straight strip member W is placed on the workpiece mounting table 34 so as to penetrate the cutting portion 3, the straight strip member W is installed so as to straddle the opening groove 6, and is cut by the opening groove 6 portion. Will be.

  Since the work placing table 34 is provided on the slide table 30, the straight member W and the slide table 30 are integrally slid by pushing the straight member W placed on the work placing table 34 by hand. Can be made. In addition, it is obvious that the slide range of the slide table 30 at this time is set in advance to a length range in which the straight member W is completely cut. If it is this structure, cutting | disconnection of the straight strip member W mounted in the workpiece mounting base 34 can be completed by the operation which pushes the slide table 30 once and pulls it back.

  For this purpose, a stopper (not shown) having the standby position 34A as a position where the straight member W can penetrate the cutting portion 3 and the cutting position 34B as a position where the straight member W is completely cut, It may be provided in advance on the slide table 30 side.

  Further, by providing a lock means 18 composed of a mechanical or electrical limit switch that is pressed down by the straight member W placed on the workpiece mounting table 34, the straight member W is fixed to the workpiece mounting table 34. If not present, the lock means 18 is not released, and a configuration in which the slide movement of the workpiece mounting table 34 is not permitted can be adopted.

The locking means 18 may be mechanical or electric. For example, as shown in FIG. 2 (b), a lever 18A and a slide table that protrude from the bottom of the work table 34 and a part of the side surface thereof are cut out. The rocking lock means 18 having a lock arm 18 </ b> B protruding below 30 can be provided. Further, the lock means 18 is configured to urge the lever 18A in a direction protruding upward with the support shaft 18C as a rotation center via an urging means (not shown). Therefore, in a state in which the straight member W is not placed on the workpiece placing table 34, the lever 18A projects upward and the lock arm 18B projects downward as shown by the solid line in the drawing, and the upper plate 10
It is possible to adopt a configuration that engages with the lock member 10 </ b> A provided on the slide table 30 and prohibits the slide movement of the slide table 30. When the straight member W is inserted, the lever 18A comes into contact with the lower surface of the straight member W and swings downward as shown by the broken line in the figure, and the lock arm 18B swings to lock the locking member 10A. By moving away from the slide table 30, the slide table 30 can be slid.

  If it is the above-mentioned structure, it becomes a simple mechanical locking means 18 and it is preferable that complicated electric control is unnecessary, and when the cutting operation of the straight member W is not performed, it is necessary to slide the workpiece mounting table 34. If not, the slide table 30 does not slide, so that a safe straight member cutting device K is obtained.

  Next, the dustproof means provided in the insertion port 32 will be described with reference to FIG.

  The insertion opening 32 is provided with a dustproof means 4 in which a fluffy brush 42 is attached to a leaf spring guide 41 as shown in FIG. If it is this structure, the opening part which penetrates the straight member W can be sealed using the dust prevention means 4 provided with a fluff-like brush, and a dust jumping out from a straight member insertion port and the leakage of noise At the same time, it can be prevented.

  When the straight member W is a straight member W1 such as a U-shaped wiring duct having a U-shaped cross section, the bottom surface portion 50 having a U-shaped cross section is set to the vertical direction, and the side portions 51 and 52 serving as the bent portions are set to the horizontal direction. By adopting the horizontal orientation as described above, it is possible to use the dustproof means 4 including a plurality of leaf spring guides 41 arranged in the horizontal direction. Moreover, the space | gap part between the side parts 51 and 52 can be sealed by setting it as the dustproof means 4 of the structure provided with two or more leaf | plate spring-shaped guides 41 to which the fluff-like brush 42 adhered.

  For that purpose, it is only necessary that the tip portions of the upper and lower fuzzy brushes 42 are in contact with each other. Furthermore, by using the soft fluffy brush 42, the bent portions 51 and 52 of the straight member W can be inserted between the upper and lower adjacent fluffy brushes 42.

  In the case of the straight member W1, such as a U-shaped wiring duct having a U-shaped cross section, the outer shape thereof is predetermined in a predetermined plurality of types. For this purpose, a plurality of leaf spring guides 41 may be provided in advance at intervals according to the dimensions. Thus, by using the dust-proof means 4 having a plurality of leaf spring-like guides 41 to which the fluffy brush 42 is attached, it is possible to cope with a plurality of types of sizes, and at the same time, the side surface portion 51 having a U-shaped cross section. , 52 can be sealed to prevent dust from popping out and noise leakage at the same time.

  As described above, since the straight strip member W such as the wiring duct is cut at a position where the rotation direction of the rotary cutter 2 is upward, the impact of rotation does not press the straight strip member W. Even the straight member W which is easy to break is not damaged. Moreover, since it cut | disconnects by pushing the workpiece mounting base 34 which mounts the straight member W manually and sliding, it can operate reliably, confirming a cutting state. For this reason, unlike an automated cutting apparatus, there is no waiting time for the operator, so that a comfortable work with a sense of rhythm can be performed while realizing the cutting operation.

  In addition, since the high-frequency noise of the rotating cutter that rotates at high speed is reduced without discharging the dust from the cutting part to the outside, a more comfortable working environment can be realized.

  For the cutting operation, an operation button provided on an operation panel provided in the cutting device K by installing a straight member W1 such as a wiring duct having a U-shaped cross section or the like and other straight members W in the cutting part 3 By operating SW and the like, the drive motor M1 is rotationally driven to perform the cutting operation.

  For example, when the operation button SW is pressed, the rotary cutter 2 starts to rotate. At this time, the driving of the suction means 14 provided separately may be started simultaneously. After the rotary cutter 2 starts to rotate, the operator pushes the straight member W placed at a predetermined position and reciprocates the slide table 30 to complete the cutting operation. Furthermore, when the cutting operation is continued, the straight member having a predetermined length that has been cut may be removed, the straight member may be aligned again, and then cut again. After all the cutting operations are completed, the operation button SW is operated to stop the drive motor M1.

  As described above, the straight member cutting device according to the present invention places the straight member on a hand-held slide table, and pushes and cuts the rotary cutter at a position where the rotation direction of the rotary cutter is upward. The impact does not press the straight member, and the straight member is not damaged. In addition, since the straight member is cut while being pushed by hand, no waiting time is generated, and it is possible to execute it while confirming the cut state directly.

  Furthermore, dust-proofing means is provided at the insertion port that becomes the opening through which the straight member is inserted, and the brush member is attached to the lower surface of the slide table, so that the cutting part is shielded from the outside, and the rotary cutter It is possible to reliably collect the dust scattered by the accompanying airflow generated by the upward high-speed rotation through the exhaust duct provided in the upper part of the slide cover.

  As described above, by using the straight member cutting device according to the present invention, it is possible to prevent scattering of dust generated during cutting and to reduce noise.

It is a front sectional view showing the whole cutting device composition concerning the present invention. The cutting device which concerns on this invention is shown, (a) is side sectional drawing which shows the whole structure, (b) is expansion explanatory drawing of the principal part. It is a top view of the cutting device concerning the present invention. It is expansion explanatory drawing of the insertion port of a cutting part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus main body 2 Rotating cutter 3 Cutting part 4 Dust-proof means 10 Upper plate 11 Fixed side cover 18 Locking means 30 Slide table 31 Slide cover 32 Insertion port 33 Slide support means 34 Work mounting table K (straight member) cutting device W straight Strip

Claims (6)

A straight member comprising: a rotary cutter at a fixed position for cutting a straight member such as a duct; and a workpiece mounting table which is slidable to a position where the straight member is placed and cut by the rotary cutter. A cutting device,
The fixed cover that covers the rotary cutter at a fixed position and the slide cover provided on the workpiece mounting table side shield the workpiece cutting part, and the rotation direction of the rotary cutter with respect to the workpiece at the cutting position is set on the mounting table. A straight member cutting device characterized in that the rotating direction is a direction from the lower surface to the upper surface of the mounted workpiece, and the rotational force of the rotary cutter escapes upward from the workpiece mounting table.   An exhaust duct is provided at the upper part of the fixed side cover, connected to the suction means via a suction pipe, and a rectifying plate for aligning the accompanying airflow of the rotary cutter in the suction flow direction of the exhaust duct is provided. 2. The straight member cutting device according to claim 1, wherein most of the dust generated during cutting by upward rotation is sucked.   The straight member cutting apparatus according to claim 1 or 2, wherein a sound absorbing member is mounted at a predetermined position inside the fixed cover or the slide cover.   The work mounting table is slidably supported on an upper plate of the apparatus via a slide support means and is disposed on a slide table that can be manually pushed, and a brush member is mounted on the lower surface of the slide table. The straight member cutting device according to any one of claims 1 to 3, wherein a gap between the upper plate and the workpiece mounting table is filled.   The slide cover is provided with an inlet portion and an outlet portion that serve as an insertion port for the straight member, and is provided with dust prevention means in which a fluffy brush is attached to a leaf spring guide at both the inlet portion and the outlet portion, and is cut. The straight-line member cutting device according to any one of claims 1 to 4, wherein scattering of dust generated in the process is prevented.   6. The straight member according to claim 4 or 5, further comprising a lock means for selecting permission or non-permission of sliding movement of the slide table in accordance with the presence or absence of the straight member on the workpiece mounting table. Cutting device.

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