JP2009072886A - Cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutter capable of smoothly transferring a sheet member to be cut and a sealing sheet from the top of a cutting table to a carrying-out side without causing stagnation due to suction of the sealing sheet even during conveyance while sucking the sheet member to be cut. <P>SOLUTION: The inclined part of a guide plate 26 is formed by bending the end of an air table 23 on the carrying-out side, and the tip end of the guide plate 26 is formed into a comb shape as a guide claw 26a. The base end of a shielding plate 27 is welded onto the rear surface of the air table 23 on the carrying-out side. By welding, the shielding plate 27 can be fixed without forming an uneven portion on the surface of the air table 23 on the carrying-out side. Since the shielding plate 27 exists, a suction air flow is weakened and becomes a turbulent flow, suction force to the sealing sheet 29 is weakened in the vicinity of the guide claw 26a, and the sealing sheet is prevented from being sucked. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cutting machine that performs cutting while sucking and holding a sheet material such as a fabric on a cutting table.

  2. Description of the Related Art Conventionally, parts for sewing clothes and the like are generated by cutting a cloth such as a cloth so as to fit a pattern or the like. The cutting machine is used to efficiently perform cutting.

  FIG. 5 shows a schematic configuration of a conventional cutting machine 1 (see, for example, Patent Document 1). The cutting table 2 of the cutting machine 1 is generally formed on the top surface of the box-shaped frame 3. The cutting table 2 is a part of the conveyor 4. The surface of the conveyor 4 is formed by the bristle tips of the bristle brush 5. The cutting head 6 moves along the surface of the cutting table 2, and the cutting blade 7 projects from the cutting head 6 to the cutting table 2 side. Note that a mechanism for moving the cutting head 6 along the surface of the cutting table 2 is not shown.

  The bristles are made of synthetic resin or the like, and when the cutting blade 7 enters from the surface, it is elastically deformed and escapes from the blade edge. Since the cutting table 2 formed of bristles also has air permeability, the cut sheet material 8 such as a cloth can be sucked and held. Since general cloth has air permeability, if a plurality of sheets are laminated and the upper part is covered with a sealing sheet 9 such as a synthetic resin film, the whole can be sucked and held. The suction force of the cutting table 2 is generated by providing a suction chamber 10 in the upper part of the conveyor 4.

  A carry-in side air table 11 is provided on the carry-in side of the cutting table 2 that is a part of the conveyor 4, and preparation of the cut sheet material 8, introduction work onto the cutting table 2, and the like are performed. A carry-out side air table 12 is provided on the carry-out side of the cutting table 2 and performs operations such as taking out the cut parts. At the time of carrying-in and carrying-out operations by operating the conveyor 4, an air flow is ejected from the surfaces of the carry-in air table 11 and the carry-out air table 12, and the cut sheet material 8 and the cut parts are lifted and moved. It can be made easier.

  When the cut sheet material 8 is carried onto the cutting table 2, the conveyor 4 is stopped and suction is started. Since the periphery of the bristle brush 5 is open, in Patent Document 1, leak prevention mechanisms 13 and 14 are provided at the end portions on the carry-in side and the carry-out side of the cutting table 2 to prevent a reduction in suction force. .

  The carry-in side air table 11 and the carry-out side air table 12 are at positions where the surfaces are higher than the surface of the cutting table 2. At both ends where the conveyor 4 is reversed, when the bristle brush 5 rotates, the top of the end locus 5a becomes higher than the surface of the cutting table 2, and the carry-in side air table 11 and the carry-out side air table 12 cover the tops. This is because it becomes higher than the surface of the cutting table 2. Guide claws 15 and 16 having inclined surfaces are provided at portions where a step is generated between the surfaces of the carry-in side air table 11 and the carry-out side air table 12 and the surface of the cutting table 2, and the sheet material 8 to be cut 8 is provided. And the cut parts can be moved smoothly.

  Further, when the cut sheet material 8 is a thin and flexible fabric, it is often placed on the underlying paper sheet 17 instead of being placed directly on the cutting table 2. The underlay paper sheet 17 covers a wider area than the cut sheet material 8. The underlay paper sheet 17 is provided with air holes that are wider than the distance between the bristles erected from the bristle brush 5, and the cut sheet material 8 is drawn into the bristles of the cutting table 2. Is preventing. In the cutting with the cutting blade 7, the underlying paper sheet 17 is also cut together with the cut sheet material 8 and the sealing sheet 9.

  FIG. 6 shows a configuration of the guide claw 16 provided on the carry-out side of FIG. (A) shows the configuration viewed from above, and (b) shows the configuration viewed from the side. The tip of the guide claw 16 is formed in a comb-like shape and penetrates into the bristles of the bristle brush 5. As shown in (b), the sealing sheet 9 extends from the surface of the cutting table 2 to the same height as the surface of the carry-out side air table 12 beyond the inclined surface of the back surface of the guide claw 16 to prevent leakage. , Have been spread out in advance. However, since the suction force near the tip of the guide claw 16 becomes strong, when the conveyor 4 is conveyed while suctioning, the sealing sheet 9 spread around the guide claw 16 is attracted and does not move. The portion of the sealing sheet 9 that follows the vicinity of the front end of the guide claw 16 moves along with the non-cut sheet material 8 and the underlying paper sheet 17 by conveyance. However, as indicated by a two-dot chain line 9a, It will be stagnant and bend easily.

A member such as the guide claw 16 is used as a comb tooth at an end portion of an escalator or a moving sidewalk (see, for example, Patent Document 2). In the paragraph 0002 of Patent Document 2, in the stepping plate appearing portion at the escalator entrance and the stepping plate sneaking portion at the exit, for the purpose of smooth transition of people and transported goods and prevention of foreign matter entrainment in the stepping plate sneaking portion, It is described that comb teeth that are engaged with the tread plate groove with a predetermined interval are provided. The guide claw 16 provided on the carry-out side of the cutting machine 1 shown in FIG. 5 fulfills the purpose of preventing the foreign matter from being caught in the same manner as the tread board infiltration portion of the escalator.
Japanese Patent No. 2955796 JP 2001-139276 A

  In the cutting machine 1 shown in FIG. 5, the cut sheet material 8 is cut by stopping the conveyor 4. When suction is performed by operating the conveyor 4, the sealing sheet 9 is inclined on the surface of the cutting table 2 or the back side of the guide claw 16 near the tip of the carry-out guide claw 16 as shown in FIG. This is because the portion that is adsorbed to the air and sent to be newly carried out stagnates and cannot be smoothly separated from the surface of the cutting table 2 onto the carry-out side air table 12. For this reason, although it is necessary to perform cutting by suction holding and conveyance after stopping suction, the operating efficiency of the cutting machine 1 is lowered.

  As shown in FIG. 6, the guide claws 16 are inserted such that each comb tooth has a blade shape of a knife and partitions the bristles of the bristle brush 25. Such a blade-like shape of the knife is considered to be influenced by the concept of comb teeth such as an escalator as in Patent Document 2. However, the cutting table 2 does not receive a heavy load such as the weight of a person or the like unlike an escalator, and has a specific problem such as a stagnation of the sealing sheet 9 due to a suction force.

  An object of the present invention is to provide a cutting machine that does not stagnate due to suction of a sealing sheet even during conveyance while sucking a sheet material to be cut, and can smoothly move from the cutting table to the carry-out side.

The present invention has a conveyor-type cutting table in which bristle brush blocks are arranged side by side to form a surface at the tip of the bristles, and the sheet material to be cut is sucked and held on the cutting table and cut according to input data. In the cutting machine,
At least on the carry-out side of the cutting table,
A take-out table that is higher than the surface of the cutting table and covers the end of the conveyor;
A guide plate that is inclined so that the guide claw at the tip formed in a comb-like shape enters the bristles on the surface of the cutting table and the base end is connected to the take-out table;
Inside the take-out table that covers the end of the conveyor, a shielding plate that is provided between the surface of the end of the conveyor and the back surface of the guide plate and limits the suction force that acts on the vicinity of the guide claw from the end of the conveyor. ,
It is a cutting machine characterized by including.

  In the present invention, the guide plate is formed integrally with the take-out table and a plate material.

In the present invention, the shielding plate is
The base end is welded to the back side of the take-out table,
The front end part has advanced into the space between the back surface of the guide plate and the surface of the conveyor.

  According to the present invention, a conveyor-type cutting table in which blocks of bristle brushes are arranged to form a surface at the tip of the bristle includes a take-out table, a guide plate, and a shielding plate at least on the carry-out side. The take-out table is higher than the surface of the cutting table and covers the end of the conveyor, so even if the top of the rotating radius of the bristle brush at the end of the conveyor is higher than the surface of the cutting table, it is accommodated inside can do. The guide plate is inclined so that the guide claw at the tip formed in a comb-like shape penetrates into the bristles on the surface of the cutting table and the base end is connected to the take-out table. It can prevent being caught. The shielding plate is provided inside the take-out table that covers the end of the conveyor and between the surface of the end of the conveyor and the back surface of the guide plate, and limits the suction force that acts on the vicinity of the guide claw from the end of the conveyor. Therefore, the stagnation by adsorption | suction of a sealing sheet etc. can be prevented. Even when the sheet material to be cut is conveyed while being sucked, the stagnation due to the suction of the sealing sheet is eliminated, so that the sheet can be smoothly transferred from the cutting table to the carry-out side.

  According to the present invention, since the guide plate is integrally formed of the take-out table and the plate material, the number of parts can be reduced, and the manufacturing can be simplified and the cost can be reduced.

  Further, according to the present invention, since the shielding plate is welded to the back surface side of the take-out table, no protruding portion or the like is formed on the front surface side, and the work of taking out the cut parts or the like can be smoothly performed on the front surface side. Can proceed. Since the tip of the shielding plate is advanced into the space between the back surface of the guide plate and the surface of the conveyor, the suction force generated near the tip of the guide plate that is formed in a comb-tooth shape is reduced, and the sealing sheet is caught. Can be effectively prevented.

  FIG. 1 is a simplified diagram showing a configuration near a transition portion from a cutting table 22 to a carry-out side air table 23 in a cutting machine 21 as an embodiment of the present invention. The carry-out side air table 23 functions as a take-out table. The configuration of the cutting table 22 is basically the same as that of the cutting machine 1 in FIG. 5 such that the surface is formed at the tip of the bristle from the bristle brush 25 arranged on the outer periphery of the conveyor 24. In the cutting machine 21, a guide plate 26 corresponding to the guide claw 16 of FIG. 5 is integrated with the carry-out side air table 23 by a plate material such as a metal plate. That is, the leading end side of the carry-out side air table 23 is bent to form an inclined portion of the guide plate 26, and the further end of the guide plate 26 is formed as a guide claw 26a in a comb shape. The guide plate 26 can be combined with the carry-out side air table 23 separately. However, by integrating the carry-out side air table 23 and the guide plate 26, the number of parts can be reduced. By integrating the carry-out side air table 23 and the guide plate 26 with a plate material, the manufacturing cost can be reduced.

The base end side of the shielding plate 27 is welded to the back side of the carry-out side air table 23. By welding, the shielding plate 27 can be fixed in a state where there is no unevenness on the surface of the carry-out side air table 23. When the shielding plate 27 is a separate body and is fixed with a bolt or the like, in order to prevent unevenness on the surface side of the carry-out side air table 23, a flat head screw or the like is used.
It is necessary to process a screw hole so that the head does not protrude from the surface. By welding, the number of parts can be reduced. The front end side of the shielding plate 27 enters the space between the back surface side of the guide plate 26 and the surface of the bristle brush 25.

  The conveyor 24 is driven by winding chains 24a provided on both sides in the width direction around the sprocket wheel 28 at the end on the carry-out side and the start end on the carry-in side. When the bristle brush 25 rotates around the sprocket wheel 28 in the rotation direction 28r, the end portion draws a locus 25a as shown in FIG. The top of the locus 25 a is higher than the surface of the cutting table 22. The carry-out side air table 23 has a height sufficient to accommodate the bristle brush 25 that rotates around the sprocket wheel 28, and a space is provided between the surface of the bristle brush 25 and the back surface of the carry-out side air table 23. . The same applies to the carry-in side. The shielding plate 27 is disposed in this space. Since the shielding plate 27 exists, the suction air flow becomes weak and becomes turbulent, and the suction to the sealing sheet 29 in the area 22b in the vicinity of the guide claw 26a as compared with the area 22a used for cutting in the cutting table 22 is performed. The force is weakened and stagnation due to adsorption can be prevented. In order to generate such a difference in suction force, it is not necessary to provide a suction force switching mechanism or the like, and it can be easily realized with a simple configuration in which the shielding plate 27 is disposed.

  FIG. 2 shows a configuration including the part shown in FIG. 1 and viewed from above. The portion in FIG. 1 corresponds to the configuration viewed from the cutting plane line AA. A brush guide 30 is provided at a side end of the bristle brush 25 to prevent air leakage to the side. A cover 31 such as a mechanism for moving the cutting head is provided on the side of the brush guide 30. A roller 32 is provided on the side of the brush guide 30 and is supported in contact with the track when moving around the sprocket wheel 28 shown in FIG. It is supported by a receiving rail (not shown).

  FIG. 3 shows a state in which the sheet material to be cut is sucked on the cutting table 22 and conveyed while being cut. From the surface of the cutting table 22, the corrugated sheet 33 is fixed and covered from the side of the bristle brush 25 to the brush guide 30 and the cover 31 on the side. Similar to the sealing sheet 29, the corrugated sheet 33 is formed of a non-breathable synthetic resin film, a synthetic resin sheet, or the like, and has higher rigidity than the flexible sealing sheet 29. The inner side edge that covers the surface of the bristle brush 25 with the corrugated sheet 33 is formed into a corrugated shape in which the unevenness changes in a curved manner. The wavy size is set larger than the interval at which the bristles are erected by the bristle brush 25. The sealing sheet 29 is spread so that the end in the width direction is outside the side edge inside the corrugated sheet 33. The sealing sheet 29 can also be extended outside the corrugated sheet 33. The leading end of the corrugated sheet 33 on the carry-out side is extended to the surface of the carry-out side air table 23. When the corrugated sheet 33 in such a state is used, the sealing sheet 29 is separated from the surface of the cutting table 22 along the inclination of the surface of the guide plate 26 while being sucked, and smoothly on the carry-out side air table 23. Can be moved.

  FIG. 4 shows an overall configuration of the cutting machine 21 of FIG. 1 and an example of a cutting state. In the cutting machine 21 as well, like the cutting machine 1 of FIG. 5, the cutting table 22 is provided on the top of a substantially box-shaped frame 34. In the cutting machine 21, the conveyor 24 is stretched between two sprocket wheels 28, the upper side becomes the cutting table 22, and the lower side becomes the return path. The suction chamber 35 accommodates the entire conveyor 24 between the sprocket wheels 28. Since the conveyor 24 is accommodated in the suction chamber 35, it is not necessary to provide the leak prevention mechanisms 13 and 14 at the end as shown in FIG.

  The configuration of the cutting head 36, the cutting blade 37, the cut sheet material 38, the underlying paper sheet 39, and the like that move along the surface of the cutting table 22 is basically the same as that of the cutting machine 1 in FIG. A duplicate description of the parts is omitted. In the cutting machine 21, when the sheet material 38 to be cut is loaded onto the cutting table 22, the conveyor 24 is temporarily stopped to start suction, and the cutting head 36 is moved to the carry-out side to cut the conveyor 24 in a stopped state. Start. After the cutting has progressed to some extent, the conveyance of the conveyor 24 can be resumed in the sucked state, and cutting can be performed while feeding the cut sheet material 38 and the like. The cut sheet material 8, the sealing sheet 9, and the underlying paper sheet 17 that have been cut are smoothly carried out onto the carry-out side air table 23. The suction chamber 35 is connected to the blower via the filter box 40. If preparation for covering the cut sheet material 38 with the sealing sheet 29 is made on the carry-in side air table 41, the cut sheet material 38 longer than the length of the cut table 22 can be easily cut. The carry-in side air table 41 can also have the same configuration as the carry-out side air table 23. Further, the work of stacking the cut sheet material 38 on the underlying paper sheet 39 on the carry-in side is performed by providing a spreader or a spreader table. The work of taking out the cut sheet material 8 or the like that has been cut on the carry-out side is performed by providing a pickup table.

  As shown in FIG. 5, even in a configuration in which the suction chamber 10 is provided only on the surface side of the conveyor 4, the present invention can be similarly applied, and cutting can be performed by suction while being conveyed. However, since the end portion cannot be sealed, a large output power is required for a blower or the like that generates a suction force due to large air leakage.

It is side surface sectional drawing which simplifies and shows the structure of the transfer part vicinity from the cutting table 22 to the carrying-out side air table 23 with the cutting machine 21 as one Embodiment of this invention. It is a top view which shows the structure which included the part shown in FIG. 1 and was seen from upper direction. FIG. 3 is a plan view showing a state in which a sheet material to be cut is conveyed while being sucked and cut on the cutting table 22 of FIG. 2. It is side surface sectional drawing which shows the whole structure of the cutting machine 21 of FIG. 1, and an example of a cutting state. It is side surface sectional drawing which shows the schematic structure of the conventional cutting machine 1. FIG. It is the top view and side sectional drawing which show the structure of the guide nail | claw 16 provided in the carry-out side of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 21 Cutting machine 22 Cutting table 23 Carrying-side air table 24 Conveyor 25 Bristle brush 26 Guide plate 26a Guide claw 27 Shielding plate 29 Sealing sheet 33 Wave-like sheet 38 Sheet material to be cut

Claims (3)

In a cutting machine that has a conveyor-type cutting table in which a bristle brush block is arranged to form the surface at the tip of the bristles, and cuts according to input data while sucking and holding the cut sheet material on the cutting table,
At least on the carry-out side of the cutting table,
A take-out table that is higher than the surface of the cutting table and covers the end of the conveyor;
A guide plate that is inclined so that the guide claw at the tip formed in a comb-like shape enters the bristles on the surface of the cutting table and the base end is connected to the take-out table;
Inside the take-out table that covers the end of the conveyor, a shielding plate that is provided between the surface of the end of the conveyor and the back surface of the guide plate and limits the suction force that acts on the vicinity of the guide claw from the end of the conveyor. ,
Cutting machine characterized by including.   2. The cutting machine according to claim 1, wherein the guide plate is formed integrally with the take-out table and a plate material. The shielding plate is
The base end is welded to the back side of the take-out table,
The cutting machine according to claim 1 or 2, wherein a front end portion has advanced into a space between a back surface of the guide plate and a front surface of the conveyor.

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