JPH06305620A - Conveyor table for cutter - Google Patents

Abstract

PURPOSE:To reduce step difference between a conveyor table of a cutter and front and rear tables. CONSTITUTION:A brush table 22 of a cutter is composed of a surface of a brush 31 connected to an endless chain 36. The brush 31 is installed on a brush installing stand 32. The brush installing stand 32 is connected to a link 38 constituting the chain 36 by a pin through a bracket 34. A rotary shaft 42 for pin connection is installed close to one link 37. A guide roller 47 rotatable with a shaft 45 as its center is arranged close to the other link 39. The guide roller 47 is fitted to/guided by a cam groove 51 formed in a guide plate 50 above a sprocket wheel 35, and the brush 31 is swung and displaced so that the tip does not project upward from a surface of the brush table 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is to cut a sheet material such as a cloth into a desired pattern while vacuum adsorbing the material in a stationary state.
The present invention relates to a conveyor table of a cutting machine that can carry in a sheet material before cutting and carry out parts after cutting in a conveyed state.

[0002]

2. Description of the Related Art Conventionally, an automatic cutting machine 1 as shown in FIG. 11 has been used for cutting a sheet material. For example, when cloth such as clothes is used as a sheet material to cut parts for sewing, the cloth is spread and spread on the brush table 2 from the cloth carry-in side. Brush table 2
Is formed as a horizontal surface at the top of the conveyor table,
The sheet material supplied from the cloth carry-in side can be carried to the cloth carry-out side. The sheet material spread on the brush table 2 is cut by a cutting blade provided on the cutting head 3. The cutting head 3 can reciprocate on a Y beam 4 that extends perpendicularly to the transport direction of the brush table 2.
The Y beam 4 can reciprocate in the transport direction of the brush table 2. The carrying direction of the brush table 2 is the X-axis direction, and the longitudinal direction of the Y beam 4 is the Y-axis direction. The cutting blade provided on the cutting head 3 reciprocates in the Z-axis direction perpendicular to the surface of the brush table 2 to cut the sheet material.

The cutting head 3 is moved on the basis of an input operation to the operation portion 5 provided at one end of the Y beam 4 or operation data set in advance on a floppy disk inserted in the floppy disk device 6. It is also possible to transmit online cutting data and control cutting by connecting online with a control device outside the automatic cutting machine 1.

A carry-in side air table 7a is provided on the upstream side of the brush table 2 at the carry-in side. An unloading side air table 7b is provided on the downstream side of the brush table 2 on the material unloading side. A large number of air ejection holes are provided in the carry-in side air table 7a and the carry-out side air table 7b, and when the cloth is carried in and the cut parts are carried out, air is jetted and floated to enable smooth carry-in and carry-out. To do. The brush table 2 vacuum-sucks the cloth spread in a stationary state, and holds the cloth so that the cloth is not displaced during cutting by the cutting blade. In order to sufficiently perform vacuum suction, when the cloth is spread on the brush table 2 from the cloth carry-in side, the cloth is covered with a cutting vinyl sheet 8a. As a result, even if the cloth has air permeability, it is possible to perform vacuum suction on the brush table 2 with a sufficient suction force. After cutting, in order to prevent air from leaking along the cutting line and reducing the vacuum suction force, a closed vinyl sheet 8b is supplied and covered after cutting.

FIG. 12 shows the construction of one end of the brush table 2 of FIG. 11 in the carrying direction, for example, the cloth carry-in side which is the upstream side or the cloth carry-out side which is the downstream side in the carrying direction. Carry-in side air table 7a and carry-out side air table 7b
Are collectively referred to as the air table 7. The brush table 2 is formed by arranging bristle blocks 9 having a constant shape in a two-dimensional array. A brush 11 including a large number of bristles 10 is formed on the bristle block 9. The bristle block 9 is attachable to and detachable from the brush mount 12. The bristle block 9 is made of a plastic material and is breathable. A vacuum chamber 13 is provided below the horizontal portion where the surface of the bristle block 9 forms the brush table 2. Brush mount 1
A roller 14 is provided at 2 and runs on the surface of the vacuum chamber 13. The brush mount 12 is formed of a drawing material such as aluminum and has a vent hole.

The brush mount 12 is fixed to a chain 16 stretched between sprocket wheels 15 provided on the cloth carry-in side and the cloth carry-out side. Links 17, 18, 19 for 3 pitches for one brush mount 12
Corresponds. The brush mount 12 is fixed to the intermediate link 18. Such chains 16 are provided on both sides of the brush table 2.

Prior art relating to a conveyor table of a cutting machine having a similar structure is disclosed in, for example, Japanese Patent Laid-Open No. 60-178.
No. 157, JP-A-63-278794 and JP-A-3-26496. In the prior art of JP-A-60-178157, a one-pitch chain corresponds to a brush mount. JP-A-63-278794 and JP-A-3-26
In the prior art of Japanese Patent No. 496, a 2-pitch chain corresponds to a brush mount.

[0008]

In the conventional conveyor table of the cutting machine, as shown in FIG. 12, when the bristle block 9 is located on the upper portion of the sprocket wheel 15, the tip 11a of the brush 11 is located on the brush table 2. It projects above the upper surface. Therefore, the brush table 2
The comb 11 between the upper surface and the surface of the air table 7 is provided with an inclined surface, and the tip 11a of the protruding brush 11 is provided.
Therefore, it is necessary to prevent the cloth to be carried in and the cutting parts to be carried out from being disturbed.

FIG. 13 shows the locus of the tip of the brush 11. The amount by which the tip 11a of the brush 11 projects from the upper surface of the brush table 2 is large because the brush 11 corresponds to a plurality of pitches of the chain 16. For example, as in the prior art of Japanese Patent Laid-Open No. 60-178157, if only one pitch is dealt with, the amount of protrusion of the brush will be small. However, it is not a good idea to make the size of the brush too small by increasing the number of brushes used, and therefore the size of the brush needs to be increased to some extent, which increases the pitch of the chain. If the pitch of the chain becomes large, smooth transportation becomes difficult. Further, it is difficult to hermetically seal the end surface of the brush table 2 by utilizing the gap between the brushes as in the prior art of JP-A-63-278794, and it is necessary to store the entire conveyor belt in the vacuum chamber. There is. JP 63
In the prior arts of -278794 and JP-A-3-26496, since a part of the brush projects from the surface of the brush table, it is necessary to provide a step at the comb portion as in the prior art shown in FIG. .

At the time of loading and unloading the dough, it is necessary to stop the vacuum suction by the brush table 2 and float and move the dough while ejecting air from the air table 7. Dough is vacuum suctioned, for example, 25.4m
It is laminated to have a thickness of m (1 inch). Therefore, when the step between the brush table 2 and the air table 7 is large and the inclination of the comb 20 is large,
In particular, on the material discharge side, the cut parts fall down or are caught by the combs, making it difficult to carry them out.

The object of the present invention is to convey a conveyor of a cutting machine capable of reducing the amount of protrusion of the brush at the end of the conveyor table to reduce the step between the upper surface of the conveyor table and the surface of the carry-in side or the carry-out side. It is to provide a table.

[0012]

SUMMARY OF THE INVENTION According to the present invention, a plurality of brush attachment members extending perpendicularly to the conveying direction are connected by endless chains provided at both ends in the longitudinal direction, and bristles are provided on each brush attachment member. Conveyor table of a cutting machine that arranges brushes and stretches a chain between a pair of sprocket wheels provided at the upstream end and the downstream end in the conveying direction to support the sheet material on the upper surface of the bristle brush and perform cutting. In order to prevent the bristle brush from protruding upward from the upper surface for supporting the sheet material even if the brush mounting member is inclined, it is provided on at least the upper part of the sprocket wheel on the upstream side or the downstream side. It is a conveyor table of a cutting machine, which includes swing means for swinging and displacing members to adjust a connected state.

Further, each of the brush mounting members of the present invention is characterized in that the brush mounting member is capable of swinging displacement about a shaft provided in a chain having a predetermined number of pitches.

Further, each of the brush mounting members of the present invention has a follower protruding in the longitudinal direction, and the swinging means guides the follower at the upper part of the sprocket wheel to swingably displace the brush mounting member. It is characterized by having.

Further, the conveyor table of the present invention is stationary in a state where the brush attachment member is closely arranged in the horizontal portion between the sprocket wheels, and is capable of vacuum adsorbing the sheet material on the upper surface of the bristle brush, A sealing member for airtightly sealing a space communicating with the horizontal portion of the conveyor table when the conveyor table is stationary is provided on the upper part of the sprocket wheel so as to be movable back and forth in the transport direction.

[0016]

According to the present invention, a pair of sprocket wheels is provided at the upstream end and the downstream end in the carrying direction. Stretch the endless chain between the sprocket wheels. A plurality of brush attachment members are connected to the chain, and bristle brushes are arranged on the brush attachment members to form a conveyor table. At least an upper portion of the sprocket wheel on the upstream side or the downstream side is provided with rocking means for rocking and displacing the brush mounting member with respect to the chain to adjust the connected state. The swinging means swings and displaces the brush mounting member so that the bristle brush does not project upward from the upper surface for supporting the sheet material even if the brush mounting member is inclined. Since the bristle brush does not project upward from the upper surface for supporting the sheet material even at the upper part of the sprocket wheel, the conveyor table can be connected to the front and rear processes in a state close to a plane.

Further, according to the present invention, each brush mounting member is capable of swinging displacement about an axis provided on the chain for each of a plurality of predetermined pitch numbers. The brush mounting member prevents one end of the bristle brush from protruding from the upper surface of the conveyor table by swinging and displacing around the shaft even if the connected chain is located above the sprocket and the inclination becomes large. be able to.

According to the invention, the brush mounting member has a follower protruding in the longitudinal direction, and the swinging means has a cam groove for guiding the follower at the upper part of the sprocket wheel to swingably displace the brush mounting member. . The brush mounting member is oscillated and displaced according to the shape of the cam groove, and it is easy to oscillate and displace so that one end of the bristle brush does not protrude from the upper surface of the conveyor table.

Further, according to the present invention, while the brush attachment member is placed in close contact with the horizontal portion between the sprocket wheels and the sheet material is vacuum-adsorbed while the brush attachment member is stationary, the conveyor table above the sprocket wheels is The sealing member hermetically seals the space communicating with the horizontal portion. As a result, vacuum leakage from the end surface of the conveyor table can be prevented, and the vacuum suction force for the sheet material can be improved. When the conveyor table conveys, the sealing member can be retracted in the conveying direction, so that the conveying can be performed smoothly. Since the sealing member is moved back and forth in the transport direction, there is no need for a space for movement on the upper part of the sprocket wheel. it can.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the structure of a conveyor table of a cutting machine according to an embodiment of the present invention at one end in the carrying direction. An air table 27 is provided at a position slightly higher than the upper surface of the brush table 22. The upper surface of the brush table 22 is formed by the tips of many bristles provided on the brush 31. The brush 31 is made of a plastic material and formed into a certain shape. The brush mount 32 extending in the direction perpendicular to the paper surface of FIG. 1 is formed by drawing a metal material such as aluminum. In the brush table 22 portion, a vacuum chamber is provided below the brush mount 32. The brush 31 and the brush mount 32 have air permeability, and apply a vacuum suction force from the vacuum chamber to the surface of the brush table 22. By this vacuum suction force, the sheet material is held on the surface of the brush table 22, and cutting is performed by a cutting blade that reciprocates perpendicularly to the surface of the brush table 22. The bristles of the brush 31 escape when the cutting edge of the cutting blade enters. A guide rail 33 is provided on the surface of the vacuum chamber described above.

The brush mount 32 is connected by brackets 34 to an endless chain 36 stretched around sprocket wheels 35 at both ends in the carrying direction. The chain 36 travels above the vacuum chamber while being guided by the guide rail 33. The bracket 34 is connected to the intermediate link 38 of the links 37, 38, 39 for the three pitches that form the chain 36. A comb tooth-shaped comb 40 is arranged at a step between the upper surface of the brush table 22 and the surface of the air table 27. A horizontal guide rail 41 is provided slightly below the upper surface of the brush table 22. The lower surface of the guide rail 41 presses and guides the roller 43 fixed to the bracket 34 via the rotation shaft 42 and the roller 46 fixed to the bracket 44 via the shaft 45. By the rotation shaft 42 on the bracket 34 side connected to the link 38, the brush mount 32
Are pin-coupled to each other, and can be swingably displaced about the rotation shaft 42. The other bracket 44 is fixed to the brush mount 32, and the guide roll 4 that is a follower is attached to the tip of the shaft 45.
7 is rotatably mounted. The bracket 34 is fixed to the link 38 by bolts 48 and 49.

A guide plate 50 is provided on the side surface of the sprocket wheel 35. A cam groove 51 into which the guide roll 47 is fitted is formed in the guide plate 50. The guide roll 47 and the cam groove 51 constitute a swinging unit that swings and displaces the brush mount 32 about the rotation shaft 42. To prevent the rotation shaft 42 and the shaft 45 from coming off, a set screw 52,
53 are arranged on the upper portions of the brackets 34 and 44, respectively. In the part where the bracket 34 is attached to the link 38,
The mounting plate 54 is interposed.

FIG. 2 is a sectional view taken along the section line II-II of FIG. 1, FIG. 3 is a side view of the state where one brush mount 32 and the link 38 are connected, and FIG. 3 is a plan view of FIG. 3, and FIG. 5 is a side view showing a state in which the brush mount 32 is swingably displaced. In these figures, the guide roll 47 is rotatable with respect to the shaft 45 via a bearing 55. A plurality of brushes 31 are provided on the brush mount 32.
Are arranged, and air blocking blocks 56 are attached to both ends in the longitudinal direction. The bracket 34 is pin-connected to the air blocking block 56 by the rotating shaft 42.
The bracket 44 is fixed to the air blocking block 56. The rotary shaft 42 is located near one of the links 37.
The shaft 45 is located near the other link 39. The guide roll 47 can be pivotally displaced about the rotation shaft 42, and the brush 31 is also pivotally displaced as the guide roll 47 is displaced.

FIG. 6 shows the chain 36 more than the state shown in FIG.
Shows the state of being displaced to the left side, and FIG. 7 shows the state of the chain 36 being further displaced to the left side. It should be noted that even if the guide roll 47 is guided by the cam groove 51 and the brush 31 is located near the upper portion of the sprocket wheel 35,
One end of No. 1 does not protrude from the upper surface of the brush table 22.

FIG. 8 shows the locus of the brush 31. The brush 31 swings and displaces about the rotation shaft 42. This swing displacement is performed by the guide roll 47 being guided along the cam groove 51. Therefore, the guide roll 47
The locus of is adjusted by the shape of the cam groove 51. When the brush 31 is on the sprocket wheel 35, the inclination of the brush mount 32 can be reduced so that a part of the brush 31 does not project upward from the upper surface of the brush table 22. The roller 57, like the roller 14 shown in FIGS. 12 and 13, is provided to support the chain 36 in the vacuum chamber.

9 and 10 show the construction of one end of a conveyor table according to another embodiment of the present invention. In the present embodiment, a structure for hermetically sealing the end portion is added to the embodiment shown in FIGS. The conveyor table is conveyed at a constant pitch. The state where the brush mounts 32 are horizontally and closely arranged is the stationary position. The end of the conveyor table is hermetically sealed by the end sealing plate 61 and the rubber packing 62. Edge sealing plate 61
Most of the space communicating with the end surface of the brush 31 is closed by. The rubber packing 62 hermetically seals between the end sealing plate 61 and the upper sealing plate 63 provided on the lower surface of the air table 27. The connecting pin 6 is attached to one end of the end sealing plate 61.
One end of the linear link 65 is axially fixed via the shaft 4. At the other end of the end sealing plate 61, one end of a bent link 67 is axially fixed via a connecting pin 66. The other end of the linear link 65 is axially fixed to one end of a connecting arm 70 via a connecting pin 68. The connecting arm 70 is axially fixed by the fixing pin 71 at a position farther from the connecting pin 68 than at the center. The shorter end of the connecting arm 70 has a connecting pin 7
It is pin-coupled to one end of the connecting member 73 via 2. The tip of a rod 75 is fixed to the other end of the connecting member 73 by a nut 74. The rod 75 is displaceable in the axial direction of the cylinder 76. The cylinder 76 is pin-coupled to the mounting plate 78 via a connecting pin 77. The mounting plate 78 is fixed to the frame 80 by mounting screws 79.

The lower side of the brush mount 32 is the lower sealing plate 8.
It is hermetically sealed by 1. The lower sealing plate 81 is attached to the short side of the L-shaped connecting angle 83 via the attachment plate 82. The connecting angle 83 is swingably displaceable around the fixed pin 84. One end of the connecting member 86 is pin-connected to the long side of the connecting angle 83 via a connecting pin 85. The tip of the rod 88 is fixed to the other end of the connecting member 86 by a nut 87. The rod 88 projects from a cylinder that can expand and contract in the axial direction. Below the air table 27, an air chamber 89 for supplying jetting air is provided.

FIG. 9 shows a state in which the cylinder 76 sucks the rod 75 so that the rod 75 contracts and the other rod 88 extends. In this state, the end sealing plate 61 and the rubber packing 62 hermetically seal the space communicating with the end of the brush 31. The lower part of the brush 31 is hermetically sealed by the lower sealing plate 81. When the vacuum suction force is generated by the vacuum chamber 90, the end portion in the transport direction is hermetically sealed, so that the vacuum suction force can be efficiently generated on the upper surface of the brush table 22.

FIG. 10 shows a rod 75 on the end sealing plate 61 side.
Shows that the rod has expanded and the rod on the lower sealing plate 81 side has contracted. In this state, the end sealing plate 61 is completely removed from the locus of the brush 31. Further, the end sealing plate 61, which is hermetically sealed in the vertical state in FIG. 9, becomes substantially horizontal in the state in FIG. In this way, no space is required above the end sealing plate 61 even when the end sealing plate 61 is moved back and forth, so that the step between the upper surface of the brush table 22 and the surface of the air table 27 can be reduced. Since the end sealing plate 61 is out of the locus range of the brush 31 and the lower sealing plate 81 is also out of the lower part of the brush mount 32, the chain 36 can carry the sheet.

In the embodiment shown in FIGS. 1 to 8, the upper surface of the brush table 22 and the surface of the air table 27 can be substantially flush with each other. In the embodiment shown in FIGS. 9 and 10, since the end surface of the brush 31 is hermetically sealed, the air table 27 is slightly moved to the brush table 22.
The required space is secured by making it higher than the upper surface. In this way, the step between the upper surface of the brush table 22 and the surface of the air table 27 can be reduced, so that the cloth can be carried in and the cut parts can be carried out smoothly. In particular, on the material carrying-out side, since the cut parts are not caught on the comb 40 to make it difficult to discharge or fall, a smooth work can be performed. Even on the cloth carrying-in side, the stacked cloths can be smoothly supplied from the air table 27 onto the brush table 22,
There is no possibility that the upper and lower fabrics that are stacked will be displaced. Further, it goes without saying that the conveying direction may be switchable by rotating the sprocket wheel 35 in the forward and reverse directions.

[0031]

As described above, according to the present invention, it is possible to reduce the level difference between the upper surface of the conveyor table and the pre-process or the post-process so that the surface of the conveyor table is substantially flat. As a result, it is possible to prevent the sheet material from being caught or the cut parts to fall when the sheet material is carried in or the cut parts are carried out.

Further, according to the present invention, since each brush mounting member can be oscillated and displaceable about an axis provided in the chain having a plurality of predetermined pitches, the tip of the bristle brush is oscillated and displaced. It is possible to prevent the parts from protruding upward from the upper surface of the conveyor table. Particularly, since one brush mounting member corresponds to a chain having a plurality of pitches, the conveyor table can be smoothly transported.

According to the present invention, while the conveyor table is stationary, the end of the conveyor table in the carrying direction is hermetically sealed by the sealing member, and when the conveyor table is carrying, the sealing member is moved in the carrying direction. Can be evacuated. Since the sealing member advances and retreats in the conveying direction, there is no need for a space for advancing and retracting the upper part of the sprocket wheel, and there is no increase in the level difference between the upper surface of the sprocket wheel and the upper surface of the conveyor table. Tight sealing can be performed.

[Brief description of drawings]

FIG. 1 is a partial side sectional view showing the configuration of an embodiment of the present invention.

FIG. 2 is a sectional view taken along the section line II-II shown in FIG.

3 is a side view showing a connected state of a brush mount 32 and a link 38 shown in FIG.

4 is a bracket 34 and a bracket 4 shown in FIG.
4 is a plan view showing a mounting state of 4 and an air blocking block 56. FIG.

FIG. 5 is a side view showing a state in which the brush 31 is pivotally displaced about a rotation shaft 42.

FIG. 6 is a partial side sectional view showing a state where the brush 31 is located on the left side of the state shown in FIG.

FIG. 7 is a side sectional view showing a state where the brush 31 is located further leftward than the state shown in FIG.

8 is a diagram showing a locus when the brush 31 moves as in FIGS. 1, 6 and 7. FIG.

FIG. 9 is a brush table 2 according to another embodiment of the present invention.
FIG. 3 is a partial side sectional view showing a structure for hermetically sealing the end portion of No. 2.

10 is a partial side cross-sectional view showing a state in which the airtight sealing of the end portion in FIG. 9 is released.

FIG. 11 is a perspective view showing an appearance of a conventional automatic cutting machine 1.

FIG. 12 is a partial side sectional view showing a configuration of an end of a conveyor table of a conventional cutting machine.

13 is a diagram showing a locus of the brushes 11 on the conveyor table shown in FIG.

[Explanation of symbols]

 22 brush table 27 air table 31 brush 32 brush mount 34,44 bracket 35 sprocket wheel 36 chain 37,38,39 link 40 comb 42,45 rotating shaft 47 guide roll 50 guide plate 51 cam groove

Claims (4)

[Claims] 1. A plurality of brush mounting members extending perpendicularly to the conveying direction are connected by endless chains provided at both ends in the longitudinal direction, and bristle brushes are arranged on each brush mounting member, In a conveyor table of a cutting machine, in which a chain is stretched between a pair of sprocket wheels provided at an upstream end and a downstream end, and a sheet material is supported on an upper surface of a bristle brush to perform cutting, at least the upstream side or the downstream side. The sprocket wheel is mounted on the top of the sprocket wheel, and the brush mounting member is swingably displaced and connected to the chain so that the bristle brush does not project upward from the upper surface for supporting the sheet material even if the brush mounting member is inclined. A conveyor table for a cutting machine, comprising a swinging means for adjusting a state. 2. The conveyor table of the cutting machine according to claim 1, wherein each of the brush mounting members is capable of swinging displacement about an axis provided in a chain having a predetermined number of pitches. 3. Each of the brush mounting members has a follower protruding in the longitudinal direction, and the swinging means has a cam groove for guiding the follower at the upper part of a sprocket wheel to swingably displace the brush mounting member. The conveyor table of the cutting machine according to claim 2, wherein 4. The conveyor table is stationary with a brush attachment member closely arranged in a horizontal portion between sprocket wheels, and is capable of vacuum-adsorbing a sheet material on an upper surface of a bristle brush. The upper part is provided with a sealing member for airtightly sealing a space communicating with a horizontal part of the conveyor table when the conveyor table is stationary so as to be movable back and forth in the transport direction. The conveyor table of the cutting machine according to any one of 1.