JP2001219394A - Cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To doubly improve working efficiency and a model itself. SOLUTION: A cutter is constituted by furnishing a fixed board 13, a movable board 14 provided on the fixed board free to vertically move, a corrosion plate 9 arranged on the fixed board 13 and on which a sheet material 12 is placed, a roll feeder 16 to deliver this corrosion plate 9 from the upstream side of the movable board 14 to the downstream side and a control device 17 to actuate the movable board 14 and the roll feeder 16 in accordance with an input working program. The roll feeder 16 is devised to be connected to an NC servo motor and to be driven to reciprocally rotate. The control device 17 reverses the NC servo motor in accordance with the working program and to send the once pattern-drawn sheet member 12A upstream from the downstream of the movable board 14 as it is placed on the corrosion plate 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting machine for cutting a blank to be cut into a desired product by automatic control.

[0002]

2. Description of the Related Art Generally, a cutting machine controlled by an automatic control is provided with a table (fixed platen) on the upper surface of which a material to be die-cut is conveyed in a discharge direction by a conveying mechanism (feeding-out mechanism) and a vertically movable table. It is provided with a movable platen (pressing plate), a blade die that is exchangeably attached to the lower surface of the movable platen, and a control device that operates the transfer mechanism and the movable plate according to the input product information. During operation of the movable platen, a contact plate for preventing breakage of the blade is arranged on a table (fixed plate) below the movable platen. The backing plate is a consumable made of a laminated film or the like, and is discarded when it is used a certain number of times and is damaged by the blade. The material to be die-cut includes resin film, cellophane, packing, felt, sponge,
Various materials such as rubber, urethane foam, aluminum wheel, copper wheel, roll material such as cloth and paper, and sheet material are used regardless of soft or hard. As described above, as the material to be die-cut, a sheet material cut into desired dimensions in length and width or an endless roll material wound around a core is used.

[0003] Models having different configurations are used depending on the type of material to be cut such as a sheet material or a roll material. For example, in the case of a cutting machine for cutting a sheet material, the transport mechanism is:
A movable table on which a backing plate is placed and which slides on the fixed board, and a movable table provided between the movable table and the fixed board for reciprocating the movable table relative to the fixed board by a predetermined amount by a rotational driving force; It comprises a ball screw and a servomotor for driving the ball screw to rotate forward and backward freely. In the case of a cutting machine for die-cutting a roll material, a transport mechanism is provided at the upstream side of the movable platen and is capable of holding a die-cutting material on a fixed plate and rotatable. The roll feeder is provided with a roll feeder driving mechanism (servo motor) for feeding the material to the movable platen side.

Conventionally, in a cutting machine, a material to be die-cut on a table is sent in one direction from an upstream side to a downstream side of a movable platen by a transfer mechanism. Synchronized with the movement, a desired cut (full cut, half cut) is made on the material to be die-cut. Since a single blade or Thomson blade is used as the blade die, the material to be die-cut is sent in the feeding direction (hereinafter referred to as X direction).
Is cut in the left and right width directions (hereinafter, referred to as Y direction), and is sent downstream (rear side) of the movable platen. When the material to be die-cut is a sheet material, after cutting, it is discharged to a container arranged on the downstream side of the movable platen. Further, when the material to be die-cut is a roll material, the material is to be taken up by a take-up device installed downstream of the movable platen.

[0005]

In the conventional cutting machine dedicated to sheet material having the above-described structure, the sheet material is cut, for example, into XY.
In the case of half-cutting in a grid like direction, a patch is attached on the moving table, the sheet material is positioned and attached on the upper surface of the patch, and the moving table is moved in the sending direction, so once, After being cut in the Y direction, the moving table moved to the movable platen downstream side is returned from the movable platen downstream side to the upstream side, and the returned sheet material is rotated by 90 degrees to be positioned on the moving plate backing plate, and again. , To cut. For this reason, it is necessary to perform positioning or cueing every time re-cutting is performed, and there is a problem that the operation is troublesome. If the positioning or cueing is performed at an approximate position in order to shorten the working time, there is a problem in that the discarded cutting area increases, material is wasted, and the number of products per unit area decreases. Further, since the moving table is sent at the exact same sending pitch, there is a fear that the backing plate may be easily damaged when reciprocating is repeated. For this reason, change the positioning position of the sheet material on the backing plate for each work, or change the feed pitch for each work when creating the work program,
It is necessary to take measures to make it difficult for the blade to hit the same position on the backing plate, and there is a problem that the creation of the work program becomes complicated or complicated.

In addition, a cutting machine dedicated to roll material that sandwiches and feeds a material to be die-cut by a roll feeder does not have a moving table, and cannot cut or re-cut the sheet material. However, there is a problem that the cost increases.

SUMMARY OF THE INVENTION The present invention has been made to eliminate the above-mentioned drawbacks, and it is possible to improve the working efficiency with a simple structure and to use a single type of cutting machine of different types depending on the material. The purpose is to provide.

[0008]

A cutting machine according to the present invention comprises:
The fixed platen on which the material to be die-cut is placed, the movable platen provided above and below the fixed plate so as to be movable up and down, and the blade die can be exchanged below, and the material to be die-cut on the fixed platen Controls the delivery means that sends the movable plate from the upstream side to the downstream side, and the movable plate and the delivery unit, and moves the movable plate up and down with a constant vertical stroke, and moves the material to be cut on the fixed plate up and down. Control means for feeding the material to be cut out in synchronism with the cutting means, and feeding back means for returning the material to be die-cut and sent to the downstream side of the movable platen to the upstream side of the movable platen. And the feed-back means are rotated in a forward / reverse direction by sandwiching the abutment plate provided on the upper surface of the movable platen on which the die material is placed and slidable on the fixed platen. Movable roller and roll for rotating this roller freely A roll feeder provided with a feeder drive mechanism, wherein the control means controls the movable platen and the roll feeder drive mechanism based on a work program inputted in advance and performs feed back. .

Further, the invention according to a second aspect of the present invention is provided with a detecting means for detecting a material to be die-cut and transmitting a detected detection signal to the control means, and sending out the detected signal by the control means based on the detection signal from the detecting means. By operating the means, the material to be die-cut is moved to a predetermined work start position, and cueing is performed before the start of the work.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cutting machine according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a conceptual diagram showing a cutting machine according to one embodiment of the present invention. As shown in FIG. 1, a cutting machine 10 according to an embodiment of the present invention includes a fixed platen 13 and a sheet material (molded material) 1 on an upper surface.
2 is mounted on the fixed platen 13 and is slidable on a fixed platen 13 (feeding means, sending-back means); a movable platen 14 provided above the fixed platen 13 so as to be vertically movable; A blade 15 replaceably mounted on the lower surface, and a fixed platen 13
A roll feeder (delivery means, return means) 1 which is provided on the upstream side of the movable platen and sends out the backing plate 9 on the fixed platen 13 from the upstream side (front side) of the movable platen 14 to the downstream side (rear side).
6 and a control device (control means) 17 for operating the movable platen 14 and the roll feeder 16 based on the input work program. The backing plate 9 prevents damage to the blade, and is made of, for example, a film material such as a laminate film, and is formed in a square shape having one side length not exceeding the left and right widths in the feeding direction. The sheet material 12 is accurately positioned and attached to the backing plate 9.

As shown in FIG. 4, the cutting machine 10 has a material unwinding device 41 on the upstream side (front side) of the fixed platen 13 and a product unwinding device 42 on the downstream side (rearward side) of the fixed platen 13. A slag winding device 43 is provided. The product winding device 42 and the slag winding device 43 are connected to an NC servomotor (not shown) and are controlled based on a work program input to the control device 17. The control device 17 synchronizes the product take-up device 42, the slag take-up device 43, and the movable platen 14 based on the input work program, and cuts the roll material 32 with the blade die 15. When the roll material 32 is set in the material unwinding device 41, and the leading end of the roll material 32 is sandwiched by the roll feeder 16 and sent out to the downstream side of the movable platen 14, the cutting machine 10 removes the mold by the blade die 15. The roll material (product) 32A thus wound is wound up by the product winding device 42, and the residue 32B generated at the time of die cutting is wound up by the slag winding device 43.

As shown in FIG. 1, the roll feeder 16 has a pair of rollers 16A and 16B,
Is sent to the movable platen 14 side with the backing plate 9 on which the plate is placed. The lower roller 16B is fixed, and the upper roller 16A is connected to at least one of an air cylinder and a spring (not shown) so as to be able to move up and down, and to be displaced in the vertical direction according to the material of the blank 12 to be cut. Thus, a predetermined pressing force is applied. When the upper roller 16A rises and is held at the upper non-nipping position, a gap is formed between the upper and lower rollers 16A and 16B. When the control device 17 is operated in a state where the front end of the contact plate 9 in the feeding direction is inserted into this gap, the upper roller 16A descends and clamps the contact plate 9. The rollers 16A and 16B are connected to an NC servo motor (roll feeder driving mechanism) (not shown) to be driven to rotate, and the NC servo motor is electrically connected to a control device to control the drive amount in the opposite direction. It is supposed to be. That is, a feeding means for feeding the sheet material 12 from the upstream side to the downstream side of the movable platen 14 by the roll feeder 16 and the NC servomotor, and the movable platen 14
It is configured to also serve as a sending back means for sending back from the downstream side to the upstream side.

A sensor (not shown) is provided between the roll feeder 16 and the movable platen 14 for detecting the front end of the sheet material 12 placed on the backing plate 9 and outputting a detection signal to the control device 17. Is provided. That is, the upper roller 16A held at the upper non-nipping position and the lower roller 16
B, the front end in the feeding direction of the backing plate 9 on which the sheet material 12 is placed is inserted, and when the control device 17 is operated, the upper roller 16A descends and moves the backing plate 9 to the lower roller 16B. (See FIG. 3A). Then, until the sensor detects the front end of the sheet material 12, the control device 17 drives the roll feeder 16 to
To the movable platen 14, the sensor detects the front end of the sheet material 12, and when a detection signal is sent to the control device 17,
The control device 17 starts the die cutting operation on the assumption that the cueing of the sheet material 12 to the set position is completed.

That is, when the control device 17 sends a positive drive signal to the NC servo motor based on the work program, the NC servo motor drives the rollers 16A and 16B to rotate in the forward direction, and causes the rollers 16A and 16B to rotate. The sandwiched sheet material 12 and backing plate 9 are sent from the upstream side to the downstream side of the movable platen 14 (see FIG. 3B). Then, the control device 17 stops the sensor (not shown) from detecting the first stamped sheet material 12A, or sends a negative drive signal to the NC servo motor according to a preset work program, The NC servo motor rotates the rollers 16A and 16B in reverse, and the sheet material 12 held between the rollers 16A and 16B is held.
And the backing plate 9 is fed back from the downstream side to the upstream side of the movable platen 14 (see FIG. 3C).

That is, after the first die-cutting operation is completed, a sensor (not shown) detects the sheet material 12A while the roll feeder 16 is sandwiching and sending out the backing plate 9 on which the first die-cut sheet material 12A is placed. Is no longer detected, or
In accordance with a preset work program, the control device 17 drives the NC servo motor in the reverse direction, and
Is returned from the rollers 16A and 16B to the upstream side, and the backing plate 9 on which the first die-cut sheet material 12A is placed is separated from the rollers 16A and 16B and returned to the upper surface of the fixed plate upstream side 13A. I have. The upper roller 16A is configured to return to the upper non-nipping position when the backing plate 9 separates from the rollers 16A and 16B (see FIG. 3C).

Then, on the upper surface 13A on the upstream side of the fixed platen, the backing plate 9 is rotated, for example, 90 degrees according to the desired recut shape while the sheet material 12A is placed thereon (FIG. 3D). ), And inserted into the gap between the rollers 16A, 16B to operate the control device 17. In the second die-cutting (recutting), as in the first die-cutting, when cueing is performed based on a detection signal from a sensor (not shown), the abutment plate 9 is moved to the downstream side of the movable platen 14 again. The second die-cutting operation is carried out (FIG. 3E)
reference). After the second die-cutting operation, the backing plate 9 may be sent back to the fixed plate upstream side 13A by the roll feeder 16 to remove the sheet material 12B, or may be temporarily sent out to the fixed plate downstream side 13B side to release the roller. 16A and 16B, the sheet material 12B may be removed and manually transported to the fixed plate upstream side 13A (FIG. 3F).
reference). In this manner, the contact plate 9 on the fixed platen 13 can be sent and returned between the upstream and downstream of the movable platen 14 by the roll feeder 16.

Next, the operation of the cutting machine according to the above embodiment will be described. In order to half-cut (die-cut) the sheet material 12 in a lattice shape as shown in FIG.
A, and the sheet material 12 in the uncut state is placed on the upper surface of the backing plate 9. Next, the roller 16A is raised to the upper non-nipping position, and the front end in the feeding direction of the contact plate 9 is inserted into the gap between the rollers 16A and 16B (see FIG. 3A). This inserting operation is performed manually, and it is desirable that the front end in the feeding direction of the backing plate 9 is placed between the rollers 16A and 16B at an appropriate position without performing accurate positioning. By doing so, the probability that the blade of the backing plate 9 hits the same place is reduced, and the life of the backing plate 9 can be extended. Next, when the switch of the control device 17 is turned on, the roller 16 is turned on.
A descends and clamps the contact plate 9 between the rollers 16A and 16B with a predetermined pressing force according to the sheet material 12. Subsequently, the control device 17 operates the roll feeder 16 until the sheet material 12 is detected by a sensor (not shown), and when the sensor detects the front end of the sheet material 12 in the feeding direction, the sheet material 12 is moved to the first position. Assuming that the tool is set at the die-cutting start position, the preparation for the first die-cutting operation is completed.

Next, based on the input work program, the roll feeder 16 and the movable platen 14 are synchronized, and the sheet material 12 sent to the downstream side of the movable platen 14 together with the backing plate 9 is half-cut by the blade mold 15. (Die-cutting) is performed (see the straight line L1 in FIG. 2).

After the sheet material 12 and the backing plate 9 are sent from the upstream side to the downstream side of the movable platen 14 and the first die-cutting is performed, a sensor (not shown) detects the first die-cut sheet material 12A. Is not detected, or the controller 17 reversely drives an NC servo motor (not shown) based on the work program according to the work program set in advance, and the controller 17 is sandwiched between the rollers 16A and 16B and the first mold is driven. The removed sheet material 12A is sent back together with the backing plate 9 from the downstream side to the upstream side of the movable platen 14, and the first die-cut sheet material 12A is separated from the rollers 16A and 16B, and the fixed platen upstream side is removed. 13A (see FIG. 3 (C)). When the backing plate 9 separates from the rollers 16A and 16B, the upper roller 16A returns to the upper non-clipping position.
For this reason, the worker does not need to move to the discharge side of the fixed platen 13 at the time when the first
The work can be continued on the upstream side of the fixed platen 13.

Next, the contact plate 9 on the fixed plate upstream side 13A
Is rotated by, for example, 90 degrees according to the desired re-cut shape of the sheet material (see FIG. 3D), and the backing plate 9 is manually set between the rollers 16A and 16B again to control. The device 17 is operated. The control device 17 performs the same operation as that at the time of the first die-cutting, and based on a detection signal from a sensor (not shown), the first die-cut sheet material 12
A is automatically set at the second die-cutting start position (see FIG. 3E), and then the roll feeder 16 and the movable platen 14 are synchronized based on the input work program, and the first A second half-cut is performed on the die-cut sheet material 12A by the blade die 15 (see a straight line L2 shown in FIG. 2).

After the second stamping is performed, the second stamped sheet material 12B (see FIG. 2) is removed from the backing plate 9 and discharged to the downstream side 13B of the fixed platen (FIG. 2). 3 (F)). After the second die-cutting, the backing plate 9 is returned to the fixed plate upstream side 13A, and the fixed plate upstream side 13A is removed.
A may remove the sheet material 12B. Then, the next sheet material 12 is set again on the backing plate 9 on the fixed plate upstream side 13A. As described above, in the cutting machine according to the above-described embodiment, the work can be performed in the same place without moving, so that the work can be performed more efficiently. In addition, since the backing plate 9 can be used as a moving table that slides on the fixed plate 16 so as to be able to reciprocate, even a cutting machine dedicated to roll material can be used as a cutting machine capable of cutting a sheet material. be able to.

In the above embodiment, the feed-back means is constituted by the backing plate and the roll feeder which is driven to rotate forward and backward by the NC servomotor. However, the present invention is not limited to this. Needless to say, a slider (reciprocating member) that appropriately and inaccurately grasps the position in the feeding direction by hand and reciprocates on the fixed plate at the upstream and downstream sides of the movable plate in the sending direction may be provided. Also,
A work table may be provided on the movable plate upstream side 13A of the fixed plate 13 at least at one of the left and right sides in the feeding direction so as to be substantially coplanar with the fixed plate 13 to facilitate the work. Further, in the above-described embodiment, the backing plate is formed in a square shape. However, the present invention is not limited to this, and a rectangular shape, a regular polygonal shape, a circular shape, and a mark at a circumferential position may be provided. You may do so.

[0023]

As described above, the cutting machine according to the present invention is provided with a fixed platen on which a material to be die-cut is placed and a vertically movable plate above the fixed platen, and the blade die is exchanged below. A movable plate attached to the movable plate, a feeding means for sending the material to be cut on the fixed plate from the upstream side to the downstream side of the movable plate, and the movable plate and the sending means are controlled to move the movable plate with a constant vertical stroke. Control means for moving up and down and sending the material to be cut off on the fixed platen in synchronism with the vertical movement of the movable platen, the material being cut out and sent to the downstream side of the movable platen A feed-back means for feeding back to the upstream side of the movable platen, and a feeding plate on which a material to be cut is placed on the upper surface and which can slide on a fixed platen; Can be turned forward and backward by holding the contact plate on the fixed plate And a roll feeder provided with a roll feeder driving mechanism for driving the rollers to rotate freely in the forward and reverse directions. The control means is configured to control the movable platen and the roll feeder driving mechanism based on a work program input in advance. Is controlled so as to send back, different models can be used together, so that the cost can be reduced. Further, since the worker can continue the work at one place without moving to the discharge side, there is an effect that the work efficiency is improved.

According to the second aspect of the present invention, there is provided a detecting means for detecting the material to be die-cut and transmitting the detected detection signal to the control means, and the control means controls the detection means based on the detection signal from the detection means. Activating the feeding means to move the material to be cut to a predetermined work start position and perform cueing before the start of work, so positioning of the material to be cut is automatically performed and cueing of the material is performed. Can be easily performed,
This has the effect of shortening the working time and improving the working efficiency.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing a configuration of a main part of a cutting machine according to an embodiment of the present invention.

FIG. 2 is a plan view showing a state where a material cut out by the cutting machine of FIG. 1 is placed on a backing plate.

FIGS. 3 (A) to 3 (F) are explanatory views showing steps of die cutting by the cutting machine of FIG. 1;

FIG. 4 is an explanatory view showing a type of the cutting machine shown in FIG. 1;

[Explanation of symbols]

9 Backing plate (feeding means, sending back means) 12 Sheet material (die-cutting material) 13 Fixed board 14 Movable board 15 Blade type 16 Roll feeder (feeding means, sending back means) 17 Control device (control means)

Claims (2)

[Claims] 1. A fixed plate on which a material to be die-cut is placed, a movable plate which is provided above and below the fixed plate so as to be movable up and down, and which has a blade die exchangeably mounted below the fixed plate. Sending means for sending the material to be cut from the upstream side to the downstream side of the movable platen,
A cutting machine having a control means for controlling the movable platen and the feeding means, moving the movable plate up and down with a constant vertical stroke, and sending out the material to be die-cut on the fixed plate in synchronization with the vertical movement of the movable platen; A feed-back means for feeding the die-cut material cut out and sent to the downstream side of the movable plate to the upstream side of the movable plate, and providing the feed-out means and the feed-back means; A resting plate that is placed and slidable on the fixed plate, a roller that is provided upstream of the movable plate and that can rotate in the forward and reverse directions by sandwiching the rest plate on the fixed plate, and rotates this roller freely in the forward and reverse directions And a roll feeder provided with a roll feeder driving mechanism for causing
A cutting machine which controls the movable platen and the roll feeder driving mechanism based on a work program input in advance to perform feeding back. A detecting means for detecting the material to be cut and transmitting a detected signal to the control means; operating the feeding means by the control means based on the detection signal from the detecting means; The cutting machine according to claim 1, wherein the material to be cut is moved to the work start position and cueing is performed before the work is started.