KR20070009400A - Covering device of cutting machine conveyor table opening - Google Patents

Abstract

(assignment)

The cutting vinyl sheet or the like is prevented from entering into the opening of the corner of the cutting table.

(Solution)

In the automatic cutting machine 21 which suctions and supports the sheet | seat 2 on the upper surface of the conveyor table 3, the cover apparatus 20 of the cutting machine conveyor table opening part is provided in the opening part 19 which arises in the edge part of the conveyor table 3. As shown in FIG. The cover member 22 can be displaced to the closed position covering the surface of the conveyor table 3 at the opening 19, so that the sealed vinyl sheet or the like can be prevented when the sheet material 2 is sucked and supported by the conveyor table 3. At the time of non-suction of the conveyor table 3 and at the time of conveyance of the conveyor table 3, the cover member 22 becomes the open position, and the cover member 22 can be retracted from the surface of the conveyor table 3 to an open position spaced apart.

Description

Cover device of cutting machine conveyor table opening {COVER DEVICE OF OPENING PART OF CUTTING MACHINE CONVEYOR TABLE}

1 is a plan view showing a partial configuration of an automatic cutting machine 21 in which a cover device 20 of a cutting machine conveyor table opening is installed as one embodiment of the present invention.

FIG. 2 is a front view of the automatic cutting machine 21 of FIG.

3 is a front view of the automatic cutting machine 21 of FIG.

4 is a plan view and a front view of a configuration in which the cover member 22 and the lever 23 in FIG. 1 are combined.

5 is a plan view and a front view of the cover member 22 of FIG.

6 is a plan view and a front view of the lever 23 of FIG.

7 is a front view of the negative pressure leakage preventing device 40 which opens and closes an end portion in the conveying direction of the conveyor table 3 of FIG.

FIG. 8 is a front view of a negative pressure leak prevention device 40 for opening and closing an end portion in the conveying direction of the conveyor table 3 of FIG. 1.

9 is a perspective view showing a schematic configuration of a conventional automatic cutting machine 1. FIG.

FIG. 10 is a front sectional view showing a configuration of a downstream portion of the conveyance direction of the conveyor table 3 of FIG.

FIG. 11 is a partial side cross-sectional view showing a configuration perpendicular to the X-axis direction of the conveyor table 3 of FIG.

* Explanation of symbols for main parts of drawings *

2 sheet material 3 conveyor table

4 Carry-in air table 5 Carry-in air table

8 Cutting Vinyl Sheets 9 Bristle Blocks

11 Chain 12 Brush Attachment

13 sprocket wheel 14 comb

15 brush guide 15a rubber sheet

20 Covering devices for cutting machine conveyor table openings

21 Automatic cutting machine 22 Cover member

23 lever 24 rotary shaft

26 Displacement mechanism 27 Reciprocating mechanism

28 link mechanism 29 rotating cylinder

30 Guide shaft 32 sliding member

33 followers 34 guides Home

40 Negative Pressure Leak Prevention Device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a cutting machine capable of sucking and supporting a sheet material to be cut, and also capable of conveying, which is a conveyor table opening for preventing an opening occurring at a corner portion of a conveyor table. The cover device of the present invention relates to.

  Conventionally, the automatic cutting machine 1 as shown in Fig. 9 has been used for cutting the sheet material 2. The sheet material 2 is cut while being sucked and supported on the surface of the conveyor table 3. For example, when the parts for sewing are cut using cloth such as clothes as the sheet material 2, the cloth is unfolded and spread over the conveyor table 3 from the carry-in air table 4. The conveyor table 3 is an infinite belt having a surface formed with a bristle brush, and can convey the sheet material 2 supplied from the carry-in air table 4 to the carry-out air table 5. The sheet material 2 spread over the conveyor table 3 is cut by a cutting blade installed on the cutting head 6. The cutting head 6 can reciprocate on the Y beam 7 extending in the Y-axis direction, which is the width direction perpendicular to the X-axis direction, which is the conveying direction of the conveyor table 3. The Y beam 7 can be reciprocated in the X axis direction. The cutting blade installed on the cutting head 6 cuts the sheet material 2 by repeating the reciprocating movement in the Z-axis direction perpendicular to the surface of the conveyor table 3.

The movement of the cutting head 6 is made based on the cutting data which designates a cutting line by the coordinate on the basis of the X axis and the Y axis. A plurality of air ejection holes are formed in the carry-in air table 4 and the carry-out air table 5, so that air can be ejected and floated when the sheet material 2 is carried in and out of the cut portion, thereby allowing smooth carry-in and take-out. Let's do it. The conveyor table 3 vacuum-absorbs the sheet | seat material 2 unfolded in the stationary state, and supports so that a positional shift | offset | difference may not arise at the time of cutting | disconnection by the cutting blade. In order to sufficiently vacuum suction, the sheet member 2 is covered with a cutting vinyl sheet 8 when the sheet member 2 is spread from the carry-in air table 4 onto the conveyor table 3. Thereby, even if the sheet | seat material 2 is air permeable, the sheet | seat material 2 can be supported on the conveyor table 3 with sufficient suction force.

FIG. 10 shows a cross-sectional configuration of one side of the conveyance direction of the conveyor table 3 of FIG. 9, for example, the side of the carry-out air table 5 on the downstream side. The carry-in air table 4 on the upstream side basically has the same configuration. The conveyor table 3 is formed by arranging the bristle blocks 9 having a constant shape in a two-dimensional shape. The bristle block 9 is molded using plastic material so that a plurality of bristles are installed upright. The tip of the bristle forms the surface of the conveyor table 3 and is breathable. The bristles of the part where the cutting blade penetrates are elastically deformed to avoid cutting by the cutting blade. The sheet material 2 can be supported by sucking air from under the conveyor table 3 by breathability by bristles. The bristle block 9 is attached to the brush attachment member 12 fixed to the chain 11 which consists of the link 10 connection in the both ends of a Y-axis direction. Although the link 10 has omitted the middle in the figure, three pitches correspond to one brush attachment member 12, and the whole is connected in an annular shape to form a chain 11. Chains 11 are provided at both ends in the Y-axis direction, respectively. Each annular chain 11 is provided between the sprocket wheels 13 provided below the carry-in air table 4 and the carry-out air table 5 at both ends in the X-axis direction. In the part which rotates about the sprocket wheel 13, the trace 9a of both ends of the bristle block 9 draws a diameter larger than the center trace. For this reason, the carry-out air table 5 should be made higher than the surface of the conveyor table 3. A comb 14 having an inclined surface is provided at both ends in the X-axis direction of the conveyor table 3 so that the sheet material can smoothly ride over the step of the surface of the conveyor table 3 and the carry-out air table 5. Although it is possible to make this step low (for example, refer patent document 1), when forming bristle block 9 side by side on the conveyor table 3, a step cannot be eliminated.

The conveyor table 3 shown in FIG. 9 is formed by lining up the bristle block 9 having air permeability, but the air permeability is required to be an upper surface, and the air permeability of the cross section in the X-axis direction or the Y-axis direction is unnecessary. On the contrary, if the air permeability, the suction force of the air to the upper surface is lowered. This applicant discloses the technique of sealing the cross section of an X-axis direction and a Y-axis direction, respectively (for example, refer patent document 2, 3). Also in the conveyor table 3 of FIG. 9, the brush guide 15 is provided in the both ends of the brush attachment material 12 of the shape extended in a Y-axis direction, and the technique of patent document 3 is applied. The comb 14 cannot be installed in the portion of the brush guide 15. When conveying the conveyor table 3, when the bristle block 9 is a part of the bristle block, the bristle is elastically deformed and can pass through the comb 14 part. However, since the surface of the brush guide 15 is not deformed, the bristle 14 cannot pass through. to be.

11 shows a cross-sectional configuration perpendicular to the X axis direction of the conveyor table 3. On the conveyor table 3, sheet materials 2, such as woven fabric, are stacked. Usually, sheet 2 is laminated with several sheets. The sheet material 2 is loaded on the surface formed by the tip of the bristle 9b of the bristle block 9. The surface of the sheet material 2 and the surface of the bristle 9b on which the sheet material 2 is not stacked are covered by the cutting vinyl sheet 8. The side of the conveyor table 3 is surrounded by the brush guide 15. The ventilation hole 15b is formed in the surface of the rubber plate 15a, and the side end part of the cutting vinyl sheet 8 can be attracted and supported. The suction force of the conveyor table 3 acts on the vent hole 15b through the passages 15c and 15d in the brush guide 15. The roller 16 is installed on the side of the brush guide 15. The brush guide 15 is fixed to the brush attachment member 12 by bolts 17. The brush attachment member 12 is fixed to the chain 11 by bolts 18. A rubber plate 15a is attached to the surface of the brush guide 15. The roller 16 is used to support when the brush attachment material 12 faces downward at the back side of the conveyor table 3. In order to seal the side end surface of the conveyor table 3 by the brush guide 15, as shown in FIG. 9, the edges of the conveyor table 3 in the X-axis direction and the Y-axis direction, that is, the four corner portions of the rectangular conveyor table 3 Openings 19, in which the combs 14 cannot be installed, occur.

(Patent Document 1) Japanese Unexamined Patent Publication No. Hei 6-305620

(Patent Document 2) Japanese Patent No. 2955796

(Patent Document 3) Japanese Patent No. 2816780

As described above, in the cutting machine as shown in Fig. 9 of the type in which a sheet material 2 serving as a cutting material (cloth) is stacked, the cutting vinyl sheet 8 is covered thereon and sucked, and then the cutting is performed. A step is generated no matter how small the step between the surfaces of the carry-in air table 4 and the carry-out air table 5 is attempted. In this step, since the sheet is cut into individual parts by the cutting and the sheets of sheet 2 are laminated, each part is likely to fall due to this step, especially on the carrying out side. But you can't get rid of the step, so install Com14. Since the tip of the comb 14 enters the bristle of the bristle block 9, it is possible to prevent a step from occurring between the comb 14 and the bristle block 9. Only the portion where the brush guide 15 is disposed at both ends of the brush attachment member 12 cannot install the comb 14. Therefore, the steps between the air tables 4 and 5 and the conveyor table 3 are reduced, so that the brush guide 15 does not interfere with the carry-in air table 4 or the carry-out air table 5 when the sprocket wheel 13 is rotated. An opening 19 is formed at the boundary of the table 3 by cutting the air table.

When vacuuming the conveyor table 3, the side end of the cutting vinyl sheet 8 is sucked into the vent hole 15b on the brush guide 15. In the corner portion of the conveyor table 3, the venting hole 15b of the brush guide 15 sucks the cutting vinyl sheet 8 to the opening portion 19, while in the middle portion, the inlet side air table 4 or the outlet side air table 5 is inclined along the slope of the comb 14. Therefore, when the suction force is released, the cutting vinyl sheet 8 easily accumulates near the opening 19. When the conveyor table 3 is transported in this state, there is a possibility that the stacked cutting vinyl sheets 8 will be introduced into the opening 19. In addition, when the sprocket wheel 13 is rotated in a weak suction state and conveyed by the conveyor table 3, the side end portion of the cutting vinyl sheet 8 is sucked from the upper surface of the brush guide 15, and there is no comb 14, so it is piled up in the opening 19 and conveyed. There is a possibility of disturbing the operation. In this way, when the cutting vinyl sheet 8 enters the opening 19, the worker needs to fix it. When the cutting vinyl sheet 8 cannot be sufficiently sucked, air leakage is caused from the air vent 15b on the brush guide 15.

It is an object of the present invention to provide a cover device for a conveyor table opening of a cutting machine which can prevent air leakage from the opening, and the inheritance of cutting vinyl sheets and the like.

This invention arrange | positions the infinite chain which spans between a pair of sprocket wheels arrange | positioned at intervals in a conveyance direction, to make a pair at intervals in the width direction perpendicular | vertical to a conveyance direction, and set bristles between chains. As a cover device provided in the opening part which arises in the edge part of a conveyor table in the cutting machine which draws and supports the sheet | seat material on the upper surface of the conveyor table formed by arranging the block of a brush,

A cover member displaceable between a closed position covering the surface of the conveyor table in the opening and an open position retracting at a distance from the surface of the conveyor table in the opening;

A displacement mechanism for displacing the cover member so that the cover member is in the closed position when the conveyor table is stopped and suctioned, and the cover member is in the open position when the conveyor table is in a non-aspirated state and when the conveyor table is conveyed.

It is a cover device of the cutting machine conveyor table opening, characterized in that it comprises

In the present invention, the displacement mechanism is characterized in that the cover member is displaced by a rotational displacement centered on a rotational point provided near the opening.

In the present invention, the displacement mechanism,

A lever having one end rotatably supported at the rotation point, the other end freely moving, and having a guide groove in the middle thereof;

Reciprocating member that rotates the lever by reciprocating a predetermined range while engaging the guide groove of the lever

It is characterized by including.

In the present invention, the conveyor table is provided with a negative pressure leak prevention device that can open and close the end portion of the conveying direction,

The displacement mechanism is characterized by displacing the cover member in conjunction with a negative pressure leak prevention device.

In the present invention, the cover member is characterized in that the elastic member is provided in the portion covering the conveyor table in the closed position.

(Example)

1, 2 and 3 show a partial configuration of an automatic cutting machine 21 in which a cover device 20 of a cutting machine conveyor table opening as an example of an embodiment of the present invention is installed. FIG. 1 shows the structure seen from the top, and FIG. 2 and FIG. 3 show the structure seen from the front. 2 shows a closed state, and FIG. 3 shows an open state, respectively. In addition, the part corresponding to the part demonstrated in FIGS. 9-11 is attached | subjected with the same code | symbol, and the overlapping description is abbreviate | omitted.

The cover device 20 of the cutting machine conveyor table opening opens and closes the opening 19 with the cover member 22. The cover member 22 is mounted to the lever 23. The lever 23 is rotatably supported about the rotation shaft 24 provided inside the conveyor table 3. The rotating shaft 24 is fixed to the side wall of the automatic cutter 21. A boundary plate 25 is provided between the comb 14 and the cover member 22. One end of the lever 23 is a base end, which is supported by the rotational shaft 24 so as to be rotatable, and the other end is a free end that is free to move. The free end of the lever 23 is connected to the displacement mechanism 26.

The displacement mechanism 26 includes a reciprocating mechanism 27 and a link mechanism 28 and is driven by the rotating cylinder 29. The reciprocating mechanism 27 includes a guide shaft 30, a support member 31 and a sliding member 32. The supporting member 31 supports the guide shaft 30 in a state parallel to the X axis direction. The sliding member 32 is capable of reciprocating in the axial direction along the guide shaft 30. The sliding member 32 is provided with a follower 33 and engages with the guide groove 34 formed in the lever 23. The reciprocating movement of the sliding member 32 is performed by the link mechanism 28 converting the expansion and contraction displacement of the rotary cylinder 29. The link mechanism 28 includes a connecting arm 36 which connects one end of the rotary arm 35 to the rotary cylinder 29, the other end of the rotary arm 35, and the sliding member 32. The rotary arm 35 is capable of rotational displacement with respect to the rotation point 37 provided between the one end and the other end.

The rotary cylinder 29 itself is driven by fluid pressure, electric power, or the like to expand and contract the rod 38. The casing of the rotating cylinder 29 is supported by the frame of the automatic cutting machine 21 so as to be elastically displaceable. In FIG. 2, the rotating cylinder 29 extends the rod 38, and drives the rotating arm 35 clockwise in the figure about the rotating point 37. As shown in FIG. The connecting arm 36 pushes the sliding member 32 along the guide shaft 30, and the follower 33 rotates the lever 23 along the guide groove 34 to displace the cover member 22 to a closed position that closes the opening 19. The cover member 22 contacts the surface of the brush guide 15 shown in FIG. 11 to close the opening 19. In FIG. 3, the rotating cylinder 29 contracts the rod 38, and drives the rotating arm 35 in the counterclockwise direction of the drawing about the rotation point 37. As shown in FIG. The connecting arm 36 pulls the sliding member 32 along the guide shaft 30, and the follower 33 displaces the cover member 22 to an open position to rotate the lever 23 along the guide groove 34 to open the opening 19. The angle of rotational displacement is about 10 degrees.

Infinite chains 11 spanning a pair of sprocket wheels 13 spaced apart in the conveying direction are arranged in pairs at intervals in the width direction perpendicular to the conveying direction, and the bristle blocks of the bristle brushes between the chains 11. In the automatic cutting machine 21 which draws and supports the sheet material 2 on the upper surface of the conveyor table 3 formed by arranging 9, the cover device 20 of the conveyor table opening is formed at the edge of the conveying direction and width direction of the conveyor table 3. It is provided in the opening part 19 which arises in a part. The cover device 20 of the cutter conveyor table opening comprises a cover member 22 and a displacement mechanism 26. Since the cover member 22 can be displaced from the opening 19 to the closed position covering the surface of the conveyor table 3, the sealing vinyl sheet 8 can be prevented from being passed into the opening 19 when the sheet material 2 is sucked and supported by the conveyor table 3. The displacement mechanism 26 covers the cover member 22 in the closed position when the conveyor table 3 is stopped and attracted, and the cover member 22 is in the open position when the conveyor table 3 is in a non-aspirated state and when the conveyor table 3 is conveyed. Since the member 22 is displaced, the cover member 22 can be retracted to an open position spaced apart from the surface of the conveyor table 3 when the conveyor table 3 is transferred.

As described above, since the displacement mechanism 26 opens and closes the opening 19 by the rotational displacement of the cover member 22, the displacement mechanism 26 can be easily installed even in a narrow space of the corner portion of the conveyor table 3. In addition, the displacement mechanism 26 engages the lever 23 having a guide groove 34 in the middle thereof, the one end of which is rotatably displaced about the rotation shaft 24, the other end being a free end, and having a guide groove 34 in the middle thereof, thereby providing a predetermined range. And a sliding member 32, which is a reciprocating member that reciprocates to rotate and displace the lever 23. The opening 23 can be opened and closed by the cover member 22 by rotating the lever 23 based on the reciprocating movement of the sliding member 32.

Fig. 4 shows the configuration in which the cover member 22 and the lever 23 are combined, Fig. 5 shows the shape of the cover member 22, and Fig. 6 shows the shape of the lever 23. Figs. 4 to 6 (a) show a plan view and (b) shows a front view respectively. The cover member 22 and the lever 23 may be formed integrally.

One end of the lever 23 is provided with a boss 39 engaged with the rotating shaft 24 of FIG. The guide groove 34 formed on the other end side of the lever 23 has a width wider than that of the open position side 34b, so that there is room between the follower 33 to be engaged as shown in FIG. As shown in Fig. 11, the rubber plate 15a is attached to the surface of the brush guide 15 that the cover member 22 contacts. Since the rubber plate 15a is, for example, an elastic member having a thickness of about several mm, the rubber sheet 15a deforms elastically when the cover member 22 is pressed. By allowing the width dimension of the guide groove 34 at the closed position side 34a, the height error of the brush guide 15 can be absorbed. In addition, when the elastic plate is directly attached to the back side of the cover member 22, the sealing effect can be further improved. That is, since the cover member 22 is provided with the elastic member in the part which covers the conveyor table 3 in a closed position, it prevents air leakage and the cover member 22 can contact the conveyor table 3 at the time of displacement from an open position to a closed position. The shock of the time can be alleviated.

7 and 8 show the configuration of the negative pressure leakage preventing device 40 which opens and closes an end portion in the conveying direction of the conveyor table 3. As disclosed in Patent Literature 2, the negative pressure leak prevention device 40 can open and close an end portion of the conveyor table 3 with the packing 41. The packing 41 is supported by the sliding member 32 and the rotating member 42. The rotating member 42 is supported from the side wall of the automatic cutter 21 at the rotation point 43 and supports the packing 41 at the free end. That is, the cover apparatus 20 of the cutting machine conveyor table opening part can open and close the opening part 19 in conjunction with opening and closing the edge part of the conveyance direction of the conveyor table 3 by the negative pressure leak prevention apparatus 40. FIG. Since the rotary cylinder 29 which is the drive source of the negative pressure leak prevention device 40 can be used as the drive source of the displacement mechanism 26, a separate dedicated drive source becomes unnecessary.

It is also possible to provide a drive source directly to the lever 23 to rotate the cover member 22. Alternatively, the lever 23 may be rotated by replacing the reciprocating mechanism 26 with a reciprocating drive source such as a cylinder.

According to the present invention, in the cutting machine which draws and supports the sheet material on the upper surface of the conveyor table formed by arranging the blocks of the bristle brushes, the opening formed in the corner portion of the conveyor table can be opened and closed by the cover member. Since the cover member can be displaced from the opening to the closed position covering the surface of the conveyor table, it is possible to prevent the sealed vinyl sheet or the like from entering the opening when the sheet material is attracted and supported by the conveyor table. The displacement mechanism displaces the cover member such that the cover member is in the closed position when the conveyor table is stopped and attracted, and the cover member is displaced so that the cover member is in the open position when the conveyor table is in a non-aspirated state and when the conveyor table is transported. At the time of transfer of the cover member, the cover member can be retracted to an open position spaced apart from the surface of the conveyor table.

Further, according to the present invention, since the opening is opened and closed at the rotational displacement of the cover member, the displacement mechanism can be easily installed in a narrow space at the corner of the conveyor table.

According to the present invention, the lever can be rotated based on the reciprocating movement of the reciprocating member, and the opening can be opened and closed by the cover member.

According to the present invention, since the drive source of the negative pressure leak prevention device can be used as the drive source of the displacement mechanism, a separate dedicated drive source is unnecessary.

In the present invention, the cover member is characterized in that the elastic member is provided in the portion covering the conveyor table in the closed position.

According to the present invention, since the cover member is provided with an elastic member at the portion covering the conveyor table in the closed position, the cover member is reliably prevented from air leakage, and the impact when the cover member contacts the conveyor table when the cover member is displaced from the open position to the closed position. Can alleviate

Claims (5)

Infinite chains spanning a pair of sprocket wheels spaced apart in the conveying direction are arranged in pairs, spaced apart in the width direction perpendicular to the conveying direction, and bristles between the chains. A cover device provided at an opening in the corner portion of the conveyor table in a cutting machine for cutting and supporting a sheet material on the upper surface of the conveyor table formed by arranging blocks of a brush. as, A cover member capable of displacing between a closed position covering the surface of the conveyor table in the opening and an open position retracting at intervals from the surface of the conveyor table in the opening; When the conveyor table is stopped and suctioned, the cover member is in the closed position, and the displacement mechanism for displacing the cover member so that the cover member is in the open position when the conveyor table is not in suction and when conveying the conveyor table is provided. Cover device for the cutting machine conveyor table opening, comprising a. The method of claim 1, And the displacement mechanism displaces the cover member by a rotational displacement about a rotation point provided near the opening. The method of claim 2, The displacement mechanism, A lever having one end rotatably supported at the rotation point, the other end being a free end, and having a guide groove in the middle thereof; Reciprocating member that rotates the lever by reciprocating a predetermined range while engaging the guide groove of the lever Cover device for the cutting machine conveyor table opening, comprising a. The method according to any one of claims 1 to 3, The conveyor table is provided with a negative pressure leak prevention device capable of opening and closing the end portion in the conveying direction. And the displacement mechanism is configured to displace the cover member in association with a negative pressure leak prevention device. The method according to any one of claims 1 to 4, The cover member is provided with a cover device for an opening of a conveyor table opening machine, characterized in that an elastic material is provided at a portion covering the conveyor table at the closed position.

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