JPH0545710B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automatic cloth cutting device, and more particularly, the present invention relates to an automatic cloth cutting device, and more specifically, it draws cloth from a cylindrically wound raw material onto a conveyor and cuts it into a predetermined pattern. cut into
This article relates to a series of automatic fabric cutting devices that stack cut fabrics in stacks.

[Conventional technology]

2. Description of the Related Art Conventionally, a technique is known in which a large number of fabrics, such as woven or knitted fabrics, are stacked on a cutting table and cut along cutting lines by manual or automatic control.

Among conventional automatic cutting machines, a typical one includes a cylindrical fabric installation part, a cutting table, a spreading machine installed between the fabric installation part and the cutting table, and a cutting table. A spreading table,
A vacuum suction means placed near the installation position of the cutting table, a cutting knife placed on the cutting table, and a pick-up table placed on the opposite side of the cutting table from the spreading machine for removing the fabric after cutting. It is equipped with

This automatic cutting machine uses vacuum suction to fix the fabric on the cutting table, since it is difficult to cut flexible fabric into a predetermined shape unless the fabric is completely fixed on the cutting table. That's what I do. Conventional vacuum suction means of this type consists of a sheet of paper spread on a cutting table shaped like a brush plate with many small holes, and a non-porous sheet of paper spread on a fabric stacked on top of the paper. The cutting table consists of a sheet and a suction pump that sucks air from below the cutting table.

In the conventional automatic cutting machine, the fabric wound into a cylindrical shape is pulled out by a spreading machine onto a spreading table covered with paper with many small holes, and the fabric is formed into multilayers on the spreading table. After being stacked, the fabric is moved to a cutting position. Further, after the upper surface of the multilayered fabric is covered with a non-breathable sheet, a suction pump is used to apply strong suction from below the cutting table. As a result, the multilayered fabric is pressed onto the cutting table together with the air-impermeable sheet to form a plate shape, which is then fixed on the cutting table.

As mentioned above, after fixing the multi-layered fabric on the cutting table, the cutting knife was moved along the shape inputted into the computer, and the non-breathable sheet, the multi-layered fabric, and the many small holes were cut. Cut the paper together.

After cutting, when the suction by the suction pump is released, the fabric returns to its soft state. Subsequently, the cut non-breathable sheet, fabric, and paper are moved to a pick-up table, and the fabric cut into a predetermined shape is removed to complete a series of cutting operations.

In addition to the above-mentioned automatic cutting machine that spreads and cuts a multi-layered fabric, there is also a conventional technique in which a single piece of fabric is spread on a cutting table and cut using a laser beam.

[Problem to be solved by the invention]

However, the above-described conventional technique in which fabrics are stacked in multiple layers and then cut has the following problems.

(1) As a suction means for the fabric, an expensive special non-breathable sheet such as a vinyl sheet and a special paper with many small holes are used. Since they are cut in one piece, they cannot be used after being cut and must be disposed of, resulting in high running costs.

(2) In order to suction and fix the fabric stacked in multiple layers on the cutting table, approximately 50 powerful suction pumps are required, and the power consumption is large.

(3) If we focus only on the work of cutting the fabric into a predetermined shape according to instructions from a computer, it seems that efficiency has improved, but the spreading work before cutting,
Also, it takes time to pick up the fabric after cutting, which increases the overall working time.

(4) Since the spreading table, cutting table, and pick-up table are installed in series, a vast installation area is required.

Further, the conventional technique of spreading a piece of fabric on a cutting table and cutting it with a laser beam has the problem of emitting a bad odor during cutting, and furthermore, there is a risk of burning out the cutting table on which the fabric is laid.

The first object of the present invention is to provide a system in which a small suction means for suctioning the fabric is sufficient, and the fabric is pulled out from a rolled up original fabric, cut into a predetermined shape, and the fabric is processed after being cut. It can reduce working time and running costs, and is suitable for high-mix, low-volume production, prototyping, and sample production with a small device, pulling fabric from a cylindrical raw material, fixing fabric at a cutting position, and positioning fabric in a specified position. This is an automatic fabric cutting machine that can automate the entire process from cutting the fabric to the shape of Our goal is to provide the following.

A second object of the present invention is to accurately attract fabric to a predetermined position on a conveyor using a simple suction means.
An object of the present invention is to provide a fixable automatic cloth cutting device.

Furthermore, a third object of the present invention is to provide an automatic fabric cutting device that can receive cut fabrics in the order of cutting, stack a plurality of fabrics, and send them to the next process.

[Means to solve the problem]

In order to achieve the first object, the present invention includes a frame, a conveyor that is installed on the frame, rotates in a fixed direction, and can stop rotating when cutting the fabric, and a conveyor that rotates from the original fabric being wound up. Fabric guiding means for pulling out a fabric and guiding the fabric onto the conveyor in synchronization with the rotation speed of the conveyor; Suction and fixing means for sucking and fixing the guided fabric at a predetermined position on the conveyor; This device is equipped with a knife unit that sequentially cuts the fabrics suctioned and fixed onto a conveyor one by one according to a pattern input into a computer, and a stacker that sequentially receives and stacks the cut fabrics.

Furthermore, in order to achieve the second object, the belt of the conveyor is formed of a breathable sheet, and the suction and fixing means for the fabric is installed below the fabric conveyance side of the belt of the conveyor. a suction box having a large number of uniform ventilation holes on the belt side surface; a suction means for reducing the pressure in the suction box; It consists of a sheet that covers the front fabric surface and a sheet that covers the rear fabric surface in the fabric conveyance direction, and has a means for rolling in one sheet and feeding out the other sheet in accordance with the movement of the cutting knife, and constantly cutting. It is constructed by having a non-breathable sheet configured to cover the fabric surface other than the upper part.

Furthermore, in order to achieve the third object, the stacker of the present invention is configured to receive the cut fabric and the remaining pieces one by one in the cutting order as the conveyor is reversed, and to stack a plurality of the pieces. This is what I did.

[Effect]

In the present invention, a wound raw fabric is pulled out by a fabric guiding means, and the fabric is guided onto a conveyor installed on a frame in synchronization with the rotation speed of the conveyor.

The conveyor receives the fabric and conveys the fabric to a cutting position corresponding to the knife unit,
Stop rotation.

When the conveyor stops after conveying the fabric to the cutting position, the fabric suction means is activated to attract and fix the fabric onto the conveyor.

After the fabric is fixed on the conveyor by suction, the knife unit is controlled by a computer. The fabric is then cut into a predetermined shape by the knife unit according to the pattern input into the computer.

After cutting the fabric into a predetermined shape with the knife unit, the conveyor is rotated, and the cut fabric is loaded into a stacker from the discharge section side of the conveyor.
After stacking a predetermined number of fabrics in the stacker, the cut fabrics are sent to the next process.

In the present invention, by synchronizing the fabric drawing speed of the fabric guiding means and the fabric conveying speed of the conveyor, there is no need to operate the suction means when the conveyor receives the fabric, and the suction means is activated only during cutting. The power consumption is significantly reduced.

As mentioned above, in the present invention, the fabric is sucked and fixed at a predetermined position on the conveyor in the order in which it is pulled out, and then only the fabric is cut by the knife unit. Running costs can be reduced compared to conventional techniques in which sheets, paper with many small holes, etc. are cut together with fabric.

In addition, in the present invention, the fabrics guided onto the conveyor are sucked and fixed one by one at a predetermined position without stacking each other, so that the suction means such as a vacuum pump that constitutes the fabric suction and fixing means is used. A small device is sufficient, and therefore equipment costs can be reduced.

Furthermore, in the present invention, the work of spreading the cloth and the work of picking up the fabric after cutting are no longer necessary, so the overall working time can be shortened.

Moreover, in the present invention, at least the spreading table can be omitted, and the means for suctioning and fixing the fabric can be downsized, so the overall size of the device can be downsized. By selecting and controlling an arbitrary pattern from among them, it can be cut into various shapes, making it suitable for high-mix, low-volume production, as well as enabling prompt production of prototypes and samples.

Furthermore, according to the present invention, it is possible to automate the entire process of pulling out the fabric from the original fabric, fixing the fabric to a cutting position, cutting the fabric, and loading the cut fabric.

Further, in the present invention, since the fabric is cut by a knife unit without using laser light, troubles such as generation of bad odor and burning out of other members can be eliminated.

Further, in the present invention, the belt of the conveyor is formed of a porous sheet or the like. A suction and fixing means for the fabric is arranged in a suction box installed below the fabric conveyance side of the belt of the conveyor, a suction means for reducing the pressure in the suction box, and above the fabric conveyance side of the belt. The winding or unwinding follows the movement of the knife.
It is comprised of two non-breathable sheets that completely cover the surface of the fabric other than the cut portion. A large number of ventilation holes are uniformly provided on the belt side surface of the suction box.

In this invention, prior to cutting the fabric by the knife unit, the rotation of the conveyor is stopped once the fabric guided onto the belt of the conveyor has been conveyed to a predetermined position. Next, after covering the fabric surface other than the cut portion with the non-breathable sheet of the suction and fixing means, the suction means is activated.

When the suction means is activated, a large number of ventilation holes are uniformly provided on the belt side surface of the suction box, and the belt is formed of a breathable sheet, and the fabric is covered with a non-breathable sheet. Since the fabric and the non-breathable sheet are sucked together, the fabric is held down and fixed onto the belt by the non-breathable sheet.

As a result, in the present invention, it becomes possible to more accurately attract and fix the fabric to a predetermined position on the conveyor using a simple suction means.

Further, in the present invention, the stacker receives cut fabrics one by one by inverting the cut fabrics in the cutting order as the conveyor is reversed, and stacks a predetermined number of fabrics. Therefore, as a result, multiple units of fabric are laminated and cut, and the multiple units of fabric are received at once on a pick-up table and sent to the next process, as well as multiple units of fabric are stacked together in a stacker. The stacked sheets can be sent to the next process.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 show an embodiment of the present invention, in which FIG. 1 is a vertical sectional side view of the entire device, FIG. 2 is a partially exploded perspective view of the embodiment shown in FIG. 1, and FIG. 3 is a partially exploded perspective view of the embodiment shown in FIG. The figure is a perspective view showing the column attached to the frame, Figure 4 is a sectional view showing the hydraulic cylinder built into the bracket, and Figure 5 is one end of the non-ventilated sheet joined together. FIG. 3 is a cross-sectional view showing a configuration for raising and lowering a roller.

The automatic fabric cutting device of the embodiment shown in these figures is as follows:
A frame 1, a conveyor 2 installed on this,
Fabric guiding means 13 and fabric suction and fixing means 16
, the knife unit 29 , and the knife unit 2
9, a column 56 extends from the frame 1, and a means 4 for discharging cut fabric and debris.
1 and a stacker 48.

The conveyor 2 includes a pair of drums 3 and 4 supported by a frame 1 at a predetermined interval, a belt 5 stretched between the drums 3 and 4, and a motor 6 installed on the drum 4 side. , a pulley 7 attached to the rotating shaft of the motor 6, a pulley 8 attached to the rotating shaft of the drum 4, and a wrapped transmission member 9 stretched between both the pulleys 7, 8. There is. The belt 5 is formed of an elastic or flexible sheet made of, for example, polyurethane, and is uniformly provided with a large number of ventilation holes (not shown). A large number of these ventilation holes are formed, for example, with a diameter of 1 mm and a pitch of 3 mm in both the vertical and horizontal directions. When the motor 6, pulleys 7, 8, and winding transmission member 9 rotate the conveyor 2 in a fixed direction shown by arrow A in FIG. It is now possible to stop the circulation at any time.

By the way, as shown in FIG. 1, the fabric is wound around the core shaft 10 in the initial state. The core shaft 1
Cylindrical raw material 11 of fabric 11a wound up into 0
is supported on one end of the frame 1 on a plurality of receiving rollers 12 arranged in an arc shape. In addition, in Fig. 1, the fabric before cutting is designated by numeral 11.
a, the cut fabric is indicated by reference numeral 11b,
The remaining piece is designated by reference numeral 11c.

As shown in FIGS. 1 and 2, the fabric guide means 13 includes a fabric pull-out roller 14 provided above the drum 3 side of the conveyor 2, and a vibrator 15 provided above the drum 3. have. This fabric guiding means 13 pulls out the fabric 11a from the original fabric 11 in the direction of arrow B shown in FIG.
A vibrator 15 applies vibrations to loosen the fabric 11a, and guides the fabric 11a to a fabric receiving position on the conveyor 2.

As shown in FIG. 1, the fabric suction and fixing means 16 includes a suction box 17, a suction means 20 such as a vacuum pump, and non-breathable sheets 22a and 22b.
and a roller 23 that operates one sheet 22a.
a, 24a, 25a and the other sheet 22b
It has a set of rollers 23b, 24b, and 25b for operating the. The suction box 17 is installed below the fabric conveying side of the belt 5 of the conveyor 2. The suction box 17 is composed of a hollow box main body 18 and a porous plate 19 attached to the upper surface of the box main body 18. The porous plate 19 is made of nonwoven fabric such as phenyl, woven fabric, foam, cork, etc., and has a large number of small holes. The small holes are smaller in diameter and finer than the ventilation holes drilled in the belt 5 of the conveyor 2. The suction means 20 is connected through a tube 21 so as to reduce the pressure inside the suction box 17. This suction box 17 has, for example, 1
Any material that can attract and fix a sheet of cloth 11a onto the belt 5 of the conveyor 2 may be used. A flexible sheet such as polyvinyl chloride is used for the air-impermeable sheets 22a and 22b. One sheet 22 of the non-breathable sheets 22a and 22b
A is suspended between a roller 23a arranged above the conveyor 2 on the side of the drum 3, a roller 24a arranged near the middle of the conveyor 2, and a roller 25a arranged diagonally above the belt 5.
It is provided so as to cover the portion of the fabric 11a placed on the drum 3 side from the cutting knife position. Further, the other sheet 22b is held by a roller 23 disposed above the conveyor 2 on the side of the drum 4.
drum 4 from the cutting knife position of the fabric 11a cut on the belt 5. It is provided so that it can cover the side part.

The rollers 23a and 23b are provided with a sheet 22.
One end portions of a and 22b are connected. The rollers 23a, 23b are rotatably supported by brackets 26a, 26b via bearings 60a, 60b, and the brackets 26a, 26b are fixed on the frame 1. Further, the roller 2
3a, 23b are moved up and down by fluid pressure cylinders 57a, 57b, and biased in the downward direction by compression springs 59a, 59b, as shown in FIGS. 4 and 5. Note that the fluid pressure cylinders 57a, 57b are connected to housings 58a, 58b.
It is attached within the brackets 26a, 26b via. Then, the rollers 24a, 2
5a is rotatably supported by a bracket 27a attached to one end side of the bottom surface of the X table 33 of the knife unit 29, which will be described later. The rollers 24b and 25b are attached to a bracket 27b attached to the other end of the bottom surface of the X table 33 of the knife unit 29.
is rotatably supported. Further, the rollers 25a and 25b have a built-in spiral spring, so that when they move together with the X table 33, they feed out the sheets 22a and 22b or wind up slack portions. When the fabric on the belt 5 is conveyed by the conveyor 2, the rollers 22 of the sheets 22a, 22b are moved together with the knife unit 29 by the action of the fluid pressure cylinder 31.
The a and 24b sides rise. On the other hand, as shown in FIG. 4 and FIG. acts on,
The rollers 23a, 23b rise, and gaps 28a, 2 are created between the fabric on the belt 5 and the sheets 22a, 22b.
8b is secured. Also, when cutting the fabric, the rollers 24a, 24 of the sheets 22a, 22b are moved together with the knife unit 29 by the action of the fluid pressure cylinder 31.
The b side descends. On the other hand, the fluid pressure cylinder 31
Hydraulic cylinders 57a, 57b synchronize with the action of
acts on the downward side, and these hydraulic cylinders 57a,
57b and the compression springs 59a, 59b, the rollers 23a, 23b are lowered, and the sheet 22
a and 22b come close to the fabric on the belt and cover the fabric. Said sheets 22a, 22
After covering the fabric on the belt 5 with b, the suction means 2
The cloth is attracted and fixed onto the belt 5 by driving the suction box 17, reducing the pressure in the suction box 17, and suctioning the cloth through the breathable belt 5.

As shown in FIG. 3, the knife unit 29 is constructed by a column 56 extending from the frame 1 and guide shafts 55a, 55b. Further, as shown in FIG. 1, the knife unit 29 is
A die set 30, a fluid pressure cylinder 31 which is a lifting device for the knife unit 29, a piston rod 32 fitted therein, and an X table 33.
, a Y table 36, a knife head 39, and a knife 40 attached thereto.
The fluid pressure cylinder 31 and piston rod 32 are connected to the knife unit 29 via the die set 30.
The entire unit can be moved up and down in the Z direction,
The guide shafts 55a and 55b are guide rods used to move the entire knife unit 29 up and down in the Z direction.

The X table 33 is attached to the bottom surface of the die set 30. This X table 33 is
A motor 34 and a ball screw 35 connected to the motor 34
is fixed to the X table 33 and the ball screw 3
5 with a nut (not shown),
It is designed to be operated to move back and forth in the direction.

roller 24a of the non-breathable sheet 22a;
Bracket 27a of 25a and bracket 27 of rollers 24b and 25b of non-breathable sheet 22b.
b is attached to the bottom surface of the X table 33, and the pair of rollers 24a and 25a and the pair of rollers 24b and 25b move together with the X table 33 in the X direction. The Y table 36 is attached to the bottom of the X table 33, and includes a motor 37, a ball screw 38 connected to the motor 37, and a nut (not shown) fixed to the Y table 36 and screwed into the ball screw 38. 2) allows reciprocating operation in the Y direction. The knife head 39 is attached to the bottom surface of the Y table 36, and is configured such that an internal shaft portion (not shown) can rotate in the θ direction, that is, around the Z axis. Further, the shaft portion of the knife head 39 is assembled so as to be movable in the Z direction at a position where the knife 40 can cut one piece of cloth and at a position away from the cutting position. Said knife 4
0 is removably attached to the bottom of the shaft portion of the knife head 39 via a chuck (not shown). X, Y, θ of the knife unit 29
A computer (not shown) controls the movement in the direction and the protrusion and retraction of the knife 40.

The cut fabric and debris discharging means 41 includes:
As shown in FIG. 1, rollers 4 are disposed outside the belt 5 on the drum 4 side of the conveyor 2.
2, 43, 44, a belt 45 stretched across these rollers 42 to 44, and the roller 4.
2 to 44, and a cover 47 surrounding the outside. Any of the rollers 42 to 44 is connected to a rotational drive source (not shown), and a belt 45 is connected to the belt 5 of the conveyor 2 and the rollers 42 to 44.
The fabric 11b and the remaining pieces 11c are cut between the two belts 5 and 45 while the two belts rotate at approximately the same speed (Fig. 2).
It is designed to lead to the top of the stacker 48 in between.

As shown in FIG. 1, the stacker 48 is supported on the truck 50 with the pantograph 52 sandwiched between a truck 50 having casters 51, a pantograph 52 and a fluid pressure cylinder 53 attached to the truck 50. and a table 54. The trolley 50 runs along the rail 49 in a first direction.
As shown by E-E' in the figure, the cut fabric 11b
The stroke corresponding to the length of belt 5
reciprocates with a stroke that is the length of one movement,
Moreover, after a predetermined number of layers of fabrics 11b and 11c have been laminated, the fabric 11b can be moved from the receiving position to the next process. The table 54 is
Through the cooperation of the pantograph 52 and the fluid pressure cylinder 53, the trolley 50 reciprocates between E and E' a predetermined number of times, and after stacking a predetermined number of cut fabrics 11b together with the remaining pieces 11c, It descends in the direction F shown in FIG. 1 by a distance corresponding to the thickness of a predetermined number of fabrics 11b to prepare for the next process.

The automatic cloth cutting apparatus of the above embodiment is operated and operated as follows.

A cylindrical raw fabric 11 wound around a core shaft 10 shown in FIG. 1 is supported on a plurality of receiving rollers 12.

Next, one end of the fabric 11a is pulled out from the original fabric 11, hung on the fabric pull-out roll 14 of the fabric guiding means 13 in a ∩ shape, and guided onto the vibrator 15. Thereafter, the fabric drawing roller 14 is rotated and the vibrator 15 is operated to separate the fabric 11a from the original fabric 11 in the direction of arrow B in FIG.
The fabric 11a is automatically pulled out in the direction shown by and guided to a fabric receiving position on the belt 5 of the conveyor 2.

When the conveyor 2 receives the fabric 11a, the motor 6 of the conveyor 2 is driven, and the conveyor 2
The belt 5 is rotated in the direction of the arrow A in FIG. The conveyor 2 is conveyed to the cutting position corresponding to , and the conveyor 2 is temporarily stopped at this point.

Next, the rollers 24 suspending the non-breathable sheets 22a and 22b of the fabric suction and fixing means 16
a, 25a and rollers 24b, 25b are supported by a body pressure cylinder 31 and a piston rod 32, which constitute a lifting device, and rollers 23a, 23a, supported by brackets 26a, 26b.
23b, the action of fluid pressure cylinders 57a and 57b that act in synchronization with the fluid pressure cylinder 31;
Due to the action of the compression springs 59a and 59b, the X and Y tables 33 and 3 of the knife unit 29 are
6 and the knife head 39, and the fabric 11a on the belt 5 is placed on the non-breathable sheet 2.
2a and 22b.

After covering the fabric 11a on the belt 5 with non-breathable sheets 22a and 22b, the suction means 20
and the suction box 1 through the tube 21.
Reduce the pressure inside 7.

Here, the suction box 17 includes a hollow box body 18 and an upper surface thereof, that is, a conveyor 2.
A porous plate 19 is attached to a surface opposite to the bottom surface of the belt 5 on the fabric conveying side.
Further, the belt 5 of the conveyor 2 is uniformly provided with a large number of ventilation holes. Furthermore, the fabric 11a on the belt 5 is made of a non-breathable sheet 22 as described above.
a, 22b. Therefore, by reducing the pressure in the suction box 17, the fabric 11a is sucked through the porous plate 19 and the belt 5 of the conveyor 2, and the fabric 11a is attracted onto the belt 5 and fixed.

In this embodiment, as described above, the fabrics are placed one by one on the belt 5 and are covered with the non-breathable sheets 22a and 22b for suction, so a small suction means can be used. Accurately adsorbs the fabric 11a onto the belt 5 using sufficient and simple means.
It becomes possible to fix it.

After the fabric 11a is attracted and fixed onto the belt 5, the knife head 3 of the knife unit 29 is
The knife 40 provided at 9 is made to protrude to a position where the fabric 11a can be cut. Next, the knife 40 is moved in the X, Y and θ directions through the X, Y tables 33, 36 and knife head 39 of the knife unit 29 according to a pattern previously input into a computer (not shown), and the fabric 11a is shaped into a predetermined pattern. cut.

When the X table 33 moves in the X direction when cutting the fabric 11a, the brackets 27a and 27b attached thereto move together with the X table 33. As a result, the set of rollers 24a and 25a and the set of rollers 24b and 25b are
3, one of the rollers 25a, 25b is attached to the non-air permeable sheets 22a, 2.
One of the sheets 2b is fed out, and the other roller rolls up the other sheet to absorb the slack.

After cutting the fabric, the knife 40 is inserted into the knife head 39. Further, the suction means 20 of the cloth suction and fixation means 16 is stopped.

Next, the knife unit 29 is lifted by the lift device.
Raise each member to the initial position. At this time,
Together with the X table 33 of the knife unit 29,
Non-breathable sheet 22 of fabric suction and fixing means 16
Rollers 24a, 25a suspending a, 22b
and the set of rollers 24b and 25b rise,
Further, the rollers 23a and 23b are connected to the fluid pressure cylinder 57.
a, 57b, the sheets 22a,
22b separates from the fabric on the belt 5. Note that the fabric here is the cut fabric 11b and its remaining pieces 11c.

After releasing the suction and fixation of the fabric and raising each member of the knife unit 29 to the initial position, the motor 6 of the conveyor 2 is driven again, and the belt 5 of the conveyor 2 is rotated in the direction of arrow A in FIG. Let it go. As a result, the cut fabric 11b and its remaining pieces 11
c is conveyed in the direction of a discharge means 41 installed on the drum 4 side of the conveyor 2.

As mentioned above, in this embodiment, the fabric 11a is cut one by one on the belt 5 of the conveyor 2, so the spreading work before cutting and the work of picking up the fabric after cutting can be omitted. Suitable for high-mix, low-volume production, trial production, and sample production. In addition, since the fabric 11a is cut with the knife 40, it is possible to eliminate the problems that occur when cutting using a laser beam, such as the occurrence of a bad odor and the burning out of other members.

When the cut fabric 11b and the remaining pieces 11c are conveyed to the discharge means 41, they are stretched between the belt 5 of the conveyor 2 and the rollers 42 to 44 of the discharge means 41, and rotate in synchronization with the belt 5. The fabric 11b and the remaining piece 11c are sandwiched between the stackers 45 and 45, and placed and stacked upside down on the table 54 of the stacker 48 on standby, as shown by arrow D in FIG.

The stacker 48 initially receives the cut fabrics 11b and 11c from the discharge means 41 with the table 54 raised to a high position. When receiving the fabrics 11b, 11c, the cart 50 is reciprocated along the rail 49 with a stroke corresponding to the length of the fabrics 11b, 11c as shown by arrow E-E' in FIG. Stack 11c one by one. For example, the fabric 11b,
When a predetermined number of fabrics 11c are received and stacked, the fluid pressure cylinder 53 is actuated, and the fabrics 11b, 11
The table 54 is lowered by one pitch corresponding to the thickness of the number of layers c, and the same operation is repeated thereafter to stack a predetermined number of fabrics 11b and 11c on the table 54. Cloth 11b, 1 on the table 54
After laminating a predetermined number of fabrics 1c, the fabrics 11b and 11c
is transported to the next process using a cart 50. In this way, the cut fabrics 11b and 11c are received one by one on the table 54 of the stacker 48 in the cutting order, and
A plurality of these sheets can be stacked and sent to the next process.

Next, FIG. 6 shows another embodiment of the present invention, and is a perspective view of a knife unit portion.

In the embodiment shown in FIG. 6, a knife unit 61 is attached to a carrier 62 so as to be movable in the Y direction, and a knife unit 61 is attached to a carrier 62 so as to be movable in the Y direction.
9, a guide rod 64 of this slider 63, a rack and pinion mechanism that reciprocates the carrier 62 in the X direction, and a feed screw mechanism that reciprocates the slider 63 in the Y direction. Configured with the necessary features.

Knife head 3 supported by the slider 63
A knife 40 for cutting fabric is attached to 9 so as to be rotatable in the θ direction and movable up and down in the Z direction.

The rack and pinion mechanism includes racks 65a and 65b arranged at a predetermined interval in the Y direction and fixed to the upper part of the frame 1, and both ends of a rotating shaft (not shown) supported within the carrier 62. A pinion (not shown) provided in the section and meshed with the racks 65a and 65b, and a carrier 6
The motor 66 is attached to one side of the motor 2 and rotates the pinion via the rotation shaft. This rack and pinion mechanism rotates the pinion in the forward or reverse direction via the rotating shaft by driving the motor 66 to rotate in the forward or reverse direction.
The slider 63 attached to the carrier 62, the knife unit 39 supported by the slider 63, and the knife unit 39 are moved back and forth in the X direction.
The knife 40 attached to the can be reciprocated together in the X direction.

The feed screw mechanism includes a feed screw 67 rotatably supported by a carrier 62 and the slider 63.
A nut 68 is fixed inside the feed screw 67 and screwed onto the feed screw 67, and a motor 69 rotates the feed screw 67. The feed screw mechanism rotates the motor 69 in the forward or reverse direction to reciprocate the slider 63 in the Y direction along the guide rod 64 through the screw feed action of the feed screw 67 and nut 68. This slider 63 and knife head 3
9 and the knife 40 can be reciprocated together in the Y direction.

In this embodiment shown in FIG.
a, 65b, a pinion, and a motor 66, the carrier 62 is
The knife 40 is moved back and forth in the
and a feed screw mechanism having a motor 69,
The slider 63 is reciprocated in the Y direction along the guide rod 64, and the knife 40 is reciprocated in the Y direction through the slider 63 and the knife head 39. In the embodiment shown in FIG. 6, the rollers 24a, 24b and 25a, 25b shown in FIGS. Rollers 23a and 23b shown in FIGS. 1, 2, 4, and 5 are attached to the bracket, and the rollers 23
Non-breathable sheet 2 is used for groups a, 24a, and 25a.
2a is suspended, and the rollers 23b, 24b, 2
A non-ventilated sheet 22b is suspended from the set 5b, but the non-breathable sheet and rollers are omitted in FIG.

The other structures and functions of the embodiment shown in FIG. 6 are the same as those of the embodiment shown in FIGS. 1 to 5.

〔Effect of the invention〕

According to the invention described in claim 1 of the present invention, there is provided a frame, a conveyor which is installed on the frame, rotates in a certain direction, and can stop rotating when cutting the fabric, and Fabric guiding means for pulling out the fabric and guiding the fabric onto the conveyor in synchronization with the rotation speed of the conveyor; Suction and fixing means for sucking and fixing the guided fabric at a predetermined position on the conveyor; The machine is constructed with a knife unit that sequentially cuts the fabric that has been suctioned and fixed onto the conveyor one by one according to a pattern input into a computer, and a stacker that sequentially receives and stacks the cut fabric. , has the following effects.

(i) By using the knife unit to cut only one piece of fabric, not only does it eliminate the need for paper with many small holes that were conventionally placed between the conveyor belt and the fabric. Running costs can be reduced compared to conventional techniques in which expensive specialized non-breathable sheets such as vinyl sheets, paper with many small holes, etc. are cut together with fabric.

(ii) Since the fabric is suctioned and fixed one by one at a predetermined position on the conveyor, the suction means used for suctioning the fabric only needs to be small. Fabric can be accurately adsorbed and fixed on top.

(iii) Guide the fabric onto a belt conveyor, cut the guided fabric one by one, and cut the fabric one by one.
By stacking the sheets one by one on the stacker, there is no need for the work of spreading the fabric and the work of picking up the fabric after cutting, so the overall working time can be shortened.

(iv) At least the spreading table can be omitted and the fabric suction means can be downsized, so the entire device can be downsized.

(v) By inputting various patterns into the computer in advance and selecting and controlling any pattern from among those patterns, it is possible to cut into various shapes, making it suitable for high-mix, low-volume production. We can immediately respond to the production of prototypes and samples.

(vi) It is possible to automate the entire process of pulling out the fabric from the original fabric, fixing the fabric at the cutting position, cutting the fabric, and loading the cut fabric.

(vii) Since the fabric is cut with a knife unit without using laser light, problems such as generation of bad odors and burning out other parts can be eliminated.

Further, according to the invention as set forth in claim 2, the belt of the conveyor is formed of a breathable sheet, and the suction and fixing means for the fabric is installed below the fabric conveying side of the belt of the conveyor, and the a suction box with a large number of uniformly provided ventilation holes on the belt side surface; a suction means for suctioning the suction box; and a fabric surface disposed on the fabric conveying surface side of the belt and in front of the cutting knife in the fabric conveying direction. and a sheet that covers the fabric surface at the rear in the fabric conveyance direction, and has a means for following the movement of the cutting knife to wind up one sheet and feed out the other sheet, and always protects the fabric from areas other than the cutting area. Since the structure includes a non-breathable sheet configured to cover the ground, the suction force is concentrated on the surface of the cut portion that is not covered with the non-breathable sheet, so a simple suction means can sufficiently absorb the fabric. It can be fixed, prevents the fabric from rolling up during cutting, and allows for good cutting.

Furthermore, according to the third aspect of the present invention, the stacker is configured to receive the cut fabric one by one by reversing the cut fabric in the cutting order as the conveyor is reversed, and to stack the plurality of fabrics. This has the effect that a plurality of cut pieces of fabric can be sent to the next process in a stacked state together with the remaining pieces of fabric in a stacker.

[Brief explanation of the drawing]

1 to 5 show an embodiment of the present invention, in which FIG. 1 is a vertical sectional side view of the entire device, FIG. 2 is a partially exploded perspective view of the embodiment shown in FIG. 1, and FIG. 3 is a partially exploded perspective view of the embodiment shown in FIG. is a perspective view showing the column attached to the frame;
Fig. 4 is a sectional view showing the state of the fluid pressure cylinder built into the bracket, Fig. 5 is an enlarged sectional view showing the configuration for raising and lowering the roller that connects one end of the non-porous sheet, and Fig. 6 FIG. 3 is an explanatory diagram showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Frame, 2... Conveyor, 5... Conveyor belt, 10... Core shaft of raw fabric, 11... Original fabric, 11a... Fabric before cutting, 11b... Fabric after cutting, 11c... Residue, 13...Fabric guiding means, 16...Fabric suction/fixing means, 17...Suction box, 20...Suction pump, 22a, 22b
...Non-breathable sheet, 23a, 23b...Roller, 29...Knife unit, 30...Die set, 31...Fluid pressure cylinder constituting the lift device, 32...Piston rod, 33...X
Table, 36... Y table, 39... Knife head, 40... Knife, 41... Means for discharging cut fabric and debris, 48... Stacker, 50...
... Trolley, 52 ... Pantograph, 53 ... Fluid pressure cylinder for raising and lowering the table, 54 ... Table,
55a, 55b...Guide shaft, 56...Column,
57a, 57b...lifting fluid pressure cylinder, 58
a, 58b... Housing, 59a, 59b...
Compression spring, 60a, 60b...Bearing, 61...
Knife unit, 62...Carrier, 63...Slider, 64...Guide rod, 65a, 65b...
Rack, 66...Motor (for moving in the X direction), 67
...Feed screw, 68...Nut, 69...Motor (for moving in the Y direction).

Claims (1)

[Scope of Claims] 1. A frame, a conveyor that is installed on the frame, rotates in a fixed direction, and can stop rotating when cutting the fabric, and a conveyor that pulls out the fabric from the rolled up original fabric, and conveys the fabric. fabric guiding means for guiding the fabric onto the conveyor in synchronization with the rotation speed of the conveyor;
A suction and fixing means that suctions and fixes the guided fabric at a predetermined position on the conveyor, and a knife that sequentially cuts the fabric that has been suctioned and fixed onto the conveyor one by one according to a pattern input into a computer. An automatic fabric cutting device comprising: a unit; and a stacker that sequentially receives and loads cut fabrics. 2. The belt of the conveyor is formed of a breathable sheet, and the suction and fixing means for the fabric is
a suction box installed below the fabric conveyance side of the belt in the conveyor and having a large number of uniformly provided ventilation holes on the belt side surface; a suction means for reducing pressure in the suction box; and a suction box on the fabric conveyance side of the belt. It consists of a sheet that covers the fabric surface in front of the cutting knife in the fabric conveyance direction and a sheet that covers the fabric surface behind the fabric conveyance direction. 2. The automatic cloth cutting apparatus according to claim 1, further comprising a means for feeding out the sheet, and an air-impermeable sheet configured to cover the surface of the fabric other than the cutting section at all times. 3. The automatic fabric cutting device according to claim 1, wherein the stacker is configured to receive the cut fabric and the remaining pieces one by one by reversing them in the cutting order as the conveyor is reversed, and to stack a predetermined number of the pieces. Device.