JP2002264079A - Sheet cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet cutting device suitable for cutting a piece of woven fabric and reduced in equipment cost, power consumption and operation cost through the miniaturization of capacity of a blower mechanism by partially sucking a position to be cut in sucking a sheet, and dispensing with the use of a vinyl sheet for cutting the sheet. SOLUTION: The upper face of a table 3 provided with a large number of air holes 9 is provided with a large number of hollow bristles 4 erected all over the upper face and fitted to the air holes 9 to communicate with the air holes 9. A sheet presser member 5 for pressing a part of the sheet A to the upper face of a group of hollow bristles 4, and a cutter mechanism with a cutter 6 for cutting the part, pressed by the sheet presser member 5, of the sheet material A, are arranged at the upper part of the group of hollow bristles 4. A suction box 8 communicating with the air holes 9 in the pressing range of the sheet presser member 5 and generating suction force for the sheet A to the tips of the hollow bristles 4 is arranged in a position directly below the sheet presser member 5 on the lower face side of the table 3. The suction box 8 and the cutter mechanism are integrally and synchronously moved in the plane direction of the table 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cutting a flexible sheet material such as a woven fabric, and more particularly, to a position where a sheet material placed on an upper surface of a bristle group is to be cut, The present invention relates to a cutting device that cuts with a cutter while adsorbing, and cuts while moving the partial suction with the cutter.

[0002]

2. Description of the Related Art When making clothes using a flexible sheet material such as a woven fabric or a breathable synthetic resin sheet, it is necessary to cut the sheet material into a predetermined shape. A sheet material cutting device is used to automatically perform the cutting.

[0003] As a conventional sheet material cutting device, for example, as disclosed in Japanese Patent Application Laid-Open No. Hei 8-257985, a large number of bristle blocks having a large number of fine shaft-like bristles erected on the upper surface of a bottom plate are disclosed.
It is supported by a pair of endless traveling bodies housed in the suction box, and the upper traveling portion is arranged side by side so as to move on the upper opening of the suction box. Forming a support surface,
A large number of suction holes are provided in the bottom plate of the bristle block, and a suction force is applied to the upper surface of the bristle block forming the cut material support surface by suction in the suction box by the blower mechanism. At the top of the support surface,
A beam that moves in the X direction in the length direction of the cut support surface is arranged, and a cutter head that moves in the Y direction in the width direction of the cut support surface is attached to the beam, and a cutter that moves up and down is provided on the cutter head. It has a structure.

In order to cut a sheet material using the above-described cutting device, a large number of stacked sheet materials are placed on a cut material supporting surface, and a non-breathable vinyl sheet is placed on the uppermost surface of the sheet material. Then, the sheet material is sucked and fixed on the bristles by the suction force applied to the cut material support surface of the bristle block from the suction box, and in this state, the pattern of the preset pattern is set while the cutter of the cutter head is vertically reciprocated at high speed. By condition,
Move the beam and cutter head in the X and Y directions,
The sheet material is cut into a predetermined shape together with the vinyl sheet by the cutter.

[0005]

However, in order to fix the sheet material placed on the cut material supporting surface, the cutting device as described above sucks the entire inside of the suction box having a large capacity to support the cut material. Due to the structure that generates suction force on the entire surface, the capacity of the blower mechanism that sucks the inside of the suction box must be increased, and the large blower mechanism not only increases the equipment cost but also consumes power. There is still room for improvement in terms of increased operating costs.

If a vinyl sheet is used to make the upper surface of the sheet material impermeable so that the sheet material is adsorbed and fixed on the cut material supporting surface at the time of cutting, the vinyl sheet becomes garbage after cutting, and is extraneous in the processing. In addition to the high cost, the cutting cost is high due to the material cost of the vinyl sheet.

In the production of clothes, there is a demand for cutting a single piece of woven fabric as a sheet material as in the case of sample production, custom production, and pattern production. When the above-described cutting apparatus is used for cutting, the cutting cost is further increased.

Accordingly, an object of the present invention is to make it unnecessary to use a vinyl sheet for cutting a sheet material, and to cut the sheet material with a cutter while partially sucking the position where the suction of the sheet material is to be cut. By reducing the capacity of the blower mechanism, equipment costs are reduced, power consumption is reduced and operating costs can be reduced, and a sheet material cutting device suitable for cutting one piece of woven fabric is provided. is there.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a table provided with a large number of vertically penetrating ventilation holes. A plurality of hollow bristles communicating with each other are laid in a laid state, and a sheet material presser for pressing a part of the sheet material placed on the upper surface of the hollow bristle group against the upper surface of the bristle group above the hollow bristle group, and a sheet. A cutter mechanism having a cutter for cutting a portion of the material pressed by the sheet material presser is disposed, and on the lower surface side of the table, communicates with a ventilation hole in a pressing range of the sheet material presser at a position immediately below the sheet material presser, A suction box for generating a suction force of the sheet material is arranged at the tip of the hollow bristles, and the suction box and the cutter mechanism are
This adopts a configuration in which the table is integrally and synchronously moved in the surface direction of the table.

As described above, by laying down the hollow bristles and moving the upper and lower sheet material holders and the suction box integrally and synchronously, the position to be cut can be partially sucked. Thus, the capacity of the blower mechanism can be reduced.

Further, by providing the cutter mechanism with a sheet material press to make the upper surface of the position where the sheet material is to be cut non-permeable, the use of a vinyl sheet for cutting the sheet material can be omitted.

Here, it is possible to adopt a structure in which a sliding means for reducing the moving torque of the suction box is interposed between the lower surface of the table and the upper end surface of the suction box which opens.

As the sliding means, an annular body made of a material having good slip such as Teflon (registered trademark) is provided on the upper end surface of the suction box, or an annular air curtain is provided on the upper end of the suction box. The sliding resistance generated on the lower surface of the table when the box is moved is reduced.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view showing the entire structure of the sheet material cutting apparatus, FIG. 2 is a side view of the same, FIG. 3 is a longitudinal sectional side view in which a cutter mechanism and a suction mechanism are enlarged, and FIG. It is the longitudinal side view expanded.

As shown in the figure, a large number of hollow bristles 4 are erected on the upper surface of a table 3 which is supported by an upper peripheral frame 2 of a support base 1 and has a horizontal arrangement. On the upper part, a sheet material presser 5 for pressing a part of the sheet material A placed on the upper surface of the group of hollow bristles 4 against the upper surface of the group of hollow bristles 4
And a cutter mechanism 7 having a cutter 6 for cutting a portion of the sheet material A pressed by the sheet material presser 5, and a tip of the hollow bristles 4 at a position directly below the sheet material presser 5 on the lower surface side of the table 3. A suction box 8 for generating a suction force for the sheet material A is disposed in the suction box 8.
And the cutter mechanism 7 are integrally and synchronously moved in the surface direction of the table 3.

The table 3 uses an aluminum rectangular plate 3a having a length corresponding to the width direction of the upper peripheral frame 2, and a plurality of the rectangular plates 3a are arranged in parallel in the longitudinal direction of the upper peripheral frame 2. As shown in FIG. 4, each rectangular plate 3a is provided with a ventilation hole 9 opening at the lower surface at the lower surface and a ventilation hole 9 opening at the upper position of the ventilation hole 9 at the upper surface.
A large number of mounting holes 10 of the hollow bristles 4 communicating with the holes are provided at predetermined intervals so as to penetrate vertically.

The hollow bristles 4 are made of a relatively hard synthetic resin or a material having the same effect, and are formed in a cylindrical shape through which the hole 11 penetrates along the axis. Incidentally, the dimensional relationship between the table 3 and the hollow bristles 4 and the mounting holes 10 and the like is, as an example, the thickness of the table 3 is set to 10 mm, the hollow bristles 4 have a length of 25 mm, an outer diameter of 1 mm, and a hole diameter of 0.5 mm. The mounting holes 10 provided in the rectangular plate 3a of the table 3 are slightly smaller in diameter than the outer diameter of the hollow bristles 4, and the lower ends of the hollow bristles 4 are press-fitted into the respective mounting holes 10 so that the hollow bristles with respect to the rectangular plate 3a are formed. 4 and the ventilation holes 9
By making the diameter slightly smaller than the mounting hole 10, this ventilation hole 9 and the hole 11 of the hollow bristles 4 communicate with each other, and the mounting holes 10 are arranged in a grid pattern at a pitch of 2 mm. Further, the length of the hollow bristles 4 protruding from the upper surface of the table 3 is set to 20 mm.

By attaching the hollow bristles 4 as described above, the countless hollow bristles 4 are implanted on the upper surface of the table 3, and the upper ends of the hollow bristles 4 are at the same plane height to support the cut object. A surface is formed, and each hollow bristle 4 can suck the sheet material A at the upper end opening of the hole 11.

As shown in FIGS. 1 and 2, rails 12, 13 along the X-axis direction, which is the length direction of the table 3, are located at upper and lower positions on the side surface of the support table 1, and between the upper and lower rails 12, 13. Is provided with an endless traveling body 14 which also rotates along the X-axis direction, and a support base 15 supported by the upper and lower rails 12 and 13 via a slider is connected to the endless traveling body 14 to form an X-axis. By rotating the endless traveling body 14 by the drive motor 16, the support base 15 is moved in the X-axis direction.

An upper beam 17 projecting from the upper surface of the table 3 and a lower beam 18 projecting from the lower surface of the table 3 are fixed to the support base 15 at a right angle to the X-axis direction. The cutter mechanism 7 is mounted so as to move in the Y-axis direction, which is the length direction of the upper beam 17, and the lower beam 18 is provided with a suction box 8 and a suction blower 19 serving as a blower mechanism in the Y-axis direction. It is mounted so as to move in unison with the cutter mechanism 7.

The cutter mechanism 7 includes the cutter head 2
The cutter 6 projecting to the lower part of the cutter head 20 is moved up and down at a high speed by a driving mechanism in the cutter head 20, and the sheet material A placed on the cut material supporting surface is pressed from below onto the lower part of the cutter head 20, It is formed by providing a sheet material presser 5 which makes the upper surface of A a partially non-ventilated surface.

Incidentally, the sheet material presser 5 is formed in a flat bowl shape having a diameter of about 100 mm, and moves integrally with the cutter head 20 while pressing the sheet material A placed on the cut material supporting surface. The cutter 6 penetrates the central portion so that the cutter 6 can move up and down.

The suction box 8 is, as shown in FIG.
The suction blower 1 is formed in a circular bowl shape having substantially the same diameter as the sheet material retainer 5 and having an open upper surface, and attached to the lower beam 18.
9 is connected to the suction port of the suction blower 19 via the telescopic hose 21, and the upper end opening is always on the lower surface of the table 3 by the spring 22 contracted between the suction blower 19 and the suction blower 19. The pressing elasticity is urged.

As shown in FIG. 4, the suction box 8 is in contact with the lower surface of the table 3 so as to communicate with the ventilation hole 9 located in the range of the inner diameter of the upper end opening. As a result, the inside of the ventilation holes 9 and the holes 11 in the communicating range is sucked, and a suction force is generated only at the tip of the hollow bristles 4 in this range.

The Y of the cutter mechanism 7 and the suction box 8
Synchronous movement in the axial direction is performed by interlocking a vertical axis 23 supported by a bearing on the support base 15 with a Y-axis motor 24 also mounted on the support base 15, and a tip pulley of the upper beam 17 and a vertical axis 2.
3 and an endless running body 25 provided between the pulleys of the lower beam 18 and the longitudinal pulley, and an endless running body 26 and a suction blower 19 provided between the pulleys on the vertical axis. By the activation of 24, the cutter mechanism 7 and the suction box 8, which are arranged coaxially above and below the table 3, are integrally moved in the Y-axis direction.

The suction box 8 slides on the lower surface of the table 3 at the time of its movement. If the sliding resistance is large, a load is applied to the movement. Sliding means 27 for reducing the torque required to move the suction box 8 between itself and the end face;
Is interposed.

The sliding means 27 shown in FIG. 4 is provided with an annular body 28 made of a material having good slip such as Teflon on the annular upper end face of the suction box 8 and sliding the annular body 28 on the lower surface of the table 3. An example is shown in which the sliding resistance is reduced when the suction box 8 is moved and the airtightness is maintained during suction.

The sliding means 27 shown in FIG. 5 is provided with an annular flange 29 around the upper end of the suction box 8.
A gap of, for example, about 0.5 mm is secured between the upper surface of the flange 3 and the lower surface of the table 3,
Are formed in an annular shape, and air injection nozzles 31 are attached to a plurality of locations in the circumferential direction below the flange portion 29.
The air jetted from 1 is blown from the groove 30 to the lower surface of the table 3 to form an annular air curtain in the gap, so that the sliding resistance during the movement of the suction box 8 is significantly reduced, and An example is shown in which airtightness is maintained.

In the illustrated case, the hollow bristles 4 are shown as straight cylindrical examples.
The upwardly projecting portion may be formed in a tapered shape having a smaller diameter toward the upper end.
Are mounted with the support base 15 in a cantilever state, but the rails 12 and 13 and the support base 1 are mounted on both sides of the support base 1, respectively.
5, a structure in which both ends of the upper beam 17 and the lower beam 18 are supported may be adopted.

The sheet material cutting device of the present invention has the above-described configuration. Next, a sheet material cutting method using the cutting device will be described.

As shown in FIG. 1, one sheet material A is placed on the cut object supporting surface formed by the hollow bristles 4 and
By starting the shaft motor 16, the upper beam 17 and the lower beam 18 are activated.
Is moved in the X-axis direction, and the cutter mechanism 7 and the suction box 8 are integrally moved in the Y-axis direction by the activation of the Y-axis motor 24, so that the cutter 6 is directly above the cutting start position.

In this state, the sheet material presser 5 is positioned on the upper surface of the cutting start position of the sheet material A in a press-contact state, and the suction box 8 is positioned on the lower surface of the table 3 directly below the sheet material presser 5. When the suction blower 19 is activated, a suction force is generated only at the tip of the hollow bristles 4 of the ventilation hole 9 in a range communicating with the suction box 8, and the cut position of the sheet material A is partially suctioned to cut the cut material. After being fixed on the supporting surface, the cutter mechanism 7 is operated to move the cutter 6 up and down at a high speed, and at the same time, the X-axis motor 16 and the Y-axis motor
The sheet material A is cut by moving the cutter 6 along a preset cutting pattern.

Since the sheet material holder 5 is located directly above the suction box 8 with the table 3, the hollow bristles 4 and the sheet material A interposed therebetween, even if the sheet material A is a permeable woven fabric, the upper surface is non-woven. The sheet material A is moved when the cutter 6 cuts even if the suction position of the hollow bristles 4 reliably acts on the sheet material A due to the ventilation state, and the cutting position of the sheet material A is partially sucked. There is no such thing as that, and the cutting can be performed accurately, so that the use of the conventional vinyl sheet for the adsorption of the sheet material A becomes unnecessary.

[0034]

As described above, according to the present invention, a large number of hollow bristles communicating with the ventilation holes are laid on the upper surface of the table provided with the large number of ventilation holes in a state of being spread, and the hollow bristle group is formed. In the upper part, a sheet material presser for pressing a part of the sheet material against the upper surface of the bristle group, and a cutter mechanism having a cutter for cutting the portion of the sheet material pressed by the sheet material presser are arranged, and on the lower surface side of the table, A suction box is arranged, and the suction box and the cutter mechanism are integrally and synchronously moved in the surface direction of the table to partially generate a suction force only in the hollow bristles of the ventilation holes in a range communicating with the suction box. As a result, the suction area can be reduced and the capacity of the blower mechanism can be reduced, so that equipment costs can be reduced, power consumption can be reduced, and operating costs can be reduced.

Further, since the sheet material presser is located immediately above the suction box, even if the sheet material is a woven fabric having air permeability, the suction force of the hollow bristles reliably acts on the sheet material, and the sheet material is pressed. The use of a vinyl sheet is unnecessary for cutting, and not only the generation of dust due to the vinyl sheet, but also the cutting cost required for the vinyl sheet can be reduced, and the cutting of one sheet material can be performed at low cost. You can do it.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the overall structure of a sheet material cutting device according to the present invention.

FIG. 2 is a side view of the above.

FIG. 3 is a longitudinal sectional side view in which the cutter mechanism and the suction mechanism are enlarged.

FIG. 4 is a longitudinal sectional side view in which main parts of the cutter mechanism and the suction mechanism are enlarged.

FIG. 5 is a longitudinal sectional side view showing another example of the sliding means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support stand 2 Upper peripheral frame 3 Table 4 Hollow bristles 5 Sheet material presser 6 Cutter 7 Cutter mechanism 8 Suction box 9 Vent hole 10 Mounting hole 11 Hole 12 Rail 13 Rail 14 Endless running body 15 Support base 16 X axis drive motor 17 Top Beam 18 Lower beam 19 Suction blower 20 Cutter head 21 Telescopic hose 22 Spring 23 Vertical axis 24 Y axis motor 25 Endless running body 26 Endless running body 27 Sliding means 28 Annular body 29 Flange part 30 Groove 31 Air injection nozzle

Claims (2)

[Claims] 1. A large number of hollow bristles communicating with the ventilation holes are erected by being attached to the respective ventilation holes on an upper surface of a table provided with a number of ventilation holes penetrating vertically, and the hollow bristles are laid. A cutter having, at the top of the group, a sheet material presser for pressing a part of the sheet material placed on the upper surface of the hollow bristle group against the upper surface of the bristle group, and a cutter for cutting the portion of the sheet material pressed by the sheet material presser Arrange the mechanism,
On the lower surface side of the table, a suction box that communicates with the air hole of the pressing range of the sheet material press at a position immediately below the sheet material press and generates a suction force of the sheet material at the tip of the hollow bristles is arranged, and this suction box and A sheet material cutting device in which the cutter mechanism is integrally and synchronously moved in the surface direction of the table. 2. A sheet material cutting apparatus according to claim 1, wherein a sliding means for reducing friction during movement of the suction box is interposed between a lower surface of the table and an upper end surface of the suction box. .