JPH05177589A - Automatic punching device for sheet - Google Patents

Abstract

PURPOSE:To enhance the quality of punching and automate perfectly the processes from sending-out of sheet to receipt of the product. CONSTITUTION:Each sheet is provided with a pattern for punching, a feed sensing mark, and location mark. A punching device is equipped with a sendoff means A, cutting means B, locating means C, punching means D, and takeout means F, in an arrangement from the left to right, and further with a first and a second sensor 12, 23 for sensing the feed sensing mark. The locating means is composed of location sensors 21, 22 to sense the location mark, a location stage 18 to suck and hold the sheet, and a driving means to move and rotate the stage 18. When the sheet is sent by the sendout means A, the feed sensing mark is sensed by the first sensor 12 to decide the cutting position, and the cut sheet is sucked to the stage 18, and the location sensors 21, 22 are put identical to the location mark, and when this cut sheet is to be sent, the feed sensing mark is sensed by the second sensor 23 to decide the punching position, and every time the pattern is punched off by the punching means D, the product is received by a product receiving tray 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic punching device for sheet material.

[0002]

2. Description of the Related Art Conventionally, when a pattern printed on a long sheet material such as plastic is punched out by a press, the sheet is cut to a certain length and then positioned one by one and punched out, or taking a large number of pieces. In the case of, the paper was sent to the press at the pitch at the time of printing and the press was removed. Then, the punched product and the scraps were manually taken out each time.

[0003]

However, the above-mentioned pre-cutting is wasteful because it requires extra manpower for cutting. Further, the one that is fed at the pitch during printing and punched out cannot cope with misalignment of the print or expansion and contraction of the sheet after drying. In addition, if it is manually taken out every time, the person cannot be separated from the press machine and cannot be automated.

Therefore, a first object of the present invention is to improve the accuracy and quality of punching. A second object of the present invention is to automatically feed, punch and take out sheets to achieve full automation.

[0005]

In order to achieve the above object, an automatic sheet material punching apparatus of the present invention is a punching apparatus for punching a pattern from a sheet material, and the sheet material is
A plurality of patterns to be punched, a feed detection mark, and a positioning mark are provided, and the punching device includes a positioning unit, a punching unit, and a second sensor that detects the feed detection mark. The positioning means includes a positioning sensor that detects a positioning mark, a positioning stage that sucks and holds a sheet material, and a driving means that moves and rotates the positioning stage. Then, the positioning stage is moved and rotated by the drive means to match the positioning sensor with the positioning mark, and when the positioned sheet material moves from the positioning means, the feed detection mark is detected by the second sensor to determine the punching position, The feature is that the pattern is punched by the punching means.

Further, in order to make the sheet material into a roll shape and completely automate the process from the delivery to the taking-out of the product, a plurality of sets are continuously provided, with a plurality of patterns being punched as one set. The punching device further includes sending means, cutting means, first and second sensors for detecting the feed detection mark, and taking-out means. The feeding means feeds the roll-shaped sheet material to the cutting means, the cutting means cuts the roll-shaped sheet material into a cut sheet, and the take-out means uses the product tray and the scraps. It consists of a receiver. Then, when the sheet material is moved by the feeding means, the feed detection mark is detected by the first sensor to determine the cutting position, and the cutting sheet cut by the cutting means for each set of a plurality of patterns is attracted to the positioning stage. Then, the positioning stage is moved and rotated by the driving means to match the positioning sensor with the positioning mark, and when the positioned cutting sheet moves from the positioning means, the feed detection mark is detected by the second sensor to determine the punching position. However, it is characterized in that the pattern is punched by the punching means, and the product tray is advanced every time the pattern is punched to receive the product.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in the general view in FIGS. 1 and 2, from the left to the right along the longitudinal direction of the present apparatus, the feeding means A, the cutting means B, and the positioning of the sheet material 1 wound in a roll form. Means C, punching means D and take-out means E are arranged. As the sheet material 1, as shown in FIG. 3, three patterns 1a forming the sheet switch are formed in the width direction by one piece.
They are arranged in rows, and they are arranged in three rows in close proximity to each other, and the nine patterns are set as one set, and then the three patterns are similarly arranged at predetermined intervals.
One set of patterns is formed in three rows each, and this is repeated to form the roll-shaped sheet material 1. Sheet material 1,
In addition to the punched product patterns 1a, feed detection marks 1b for detecting the feed distance and positioning marks 1c for positioning the sheet material are provided.

First, the feeding means A is provided with roll pressers 2 and 2 for sandwiching the rolled sheet material 1 in opposition to each other in the width direction, and one of them is pressed by the spring 3 to the other.
The roll pressers 2 and 2 are rotatably supported by support plates 4 and 4, and can be manually rotated by a knob 5. A motor 6 is provided for feeding the sheet material 1, and the pressing roll 7 is elastically brought into contact with the feed roll 6a which is rotationally driven by the motor so that the sheet material 1 passes between the both rolls. Both sides of the sheet material 1 are guided by the guides 8, 8.

The cutting means B includes a support column 9 and an air cylinder 1
0 is supported, a cutter 11 is connected to the tip of the air cylinder 10, and the cutter can be moved up and down by advancing and retracting the cylinder. The feed detection mark 1b is provided at a position close to the cutter 11.
There is provided a first sensor 12 for detecting

In order to advance the sheet material cut by the cutting means B (hereinafter referred to as "cutting sheet 1A") to the positioning means C, a slider 14 is provided on the support plate 13 so as to be movable back and forth along the longitudinal direction. Cylinder 1 on slider 14
An air chuck 17 is provided via the pad 5 and the pad 16. The air chuck 17 can adsorb the leading end of the cut sheet 1A.

The positioning means C includes a positioning stage 1
8 and drive means 19 and 20 for moving and rotating the positioning stage. The positioning stage 18 is
It is possible to move in the Y direction (vertical direction in FIG. 1) and at the same time θ
It is driven so as to be rotatable in the direction (direction of FIG. 1). That is, as shown in FIG. 2, the positioning stage 18 is supported by a rotary table 19a as a means for rotationally driving, and the rotary table 19a can be rotated by a θ-axis motor 19 located below. The θ-axis motor 19 is supported by tables 20a, 20b, 20c, and these tables can be moved in the Y direction by a Y-axis motor 20 which is a fixedly provided driving means. The positioning means C has positioning sensors 21 and 22 fixedly provided at positions facing the positioning mark 1c, and a second sensor 23 for detecting the feed detection mark 1b provided at a position in front of the sensor 22. There is.

In order to advance the cut sheet 1A positioned by the positioning means C to the positions of the punching means D and the take-out means E, a carrying motor 24 is fixedly provided, and the ball screw 25 is rotationally driven by this carrying motor. Align the ball 25a with the ball screw 25, and
The rotation of the ball 25a allows the ball 25a to move back and forth in the left-right direction. Mounting plate 26 for clamper unit on ball 25a
, And the clamper 28, the clamp cylinder 29, and the front end of the mounting plate 26 via the clamper mounting plate 27.
A clamper unit including 29 and a tension cylinder 30 is provided so as to face each other in the width direction.

In the punching means D, a lower die 31 and an upper die 32 are vertically opposed to each other, and the upper die 32 descends to punch out a pattern, and the punched product adheres to the upper die 32 and rises,
The product is designed to drop away from the upper mold 32 at the predetermined position where the product is raised.

As shown in FIGS. 1, 2 and 7, the take-out means E has a support plate 34 provided upright at the tip of a fixed mount 33, and a support plate 35 is projected from the upper end along the longitudinal direction. It is set up. A rotary actuator 36 is fixed to the upper surface of the tip of the support plate 35, and its rotary shaft 36a is fixed to the support plate 35.
And a cylinder 37 is attached to the protruding end in the horizontal direction. At the tip of a cylinder rod 37a, which is driven forward and backward by the cylinder 37,
A support plate 38 is fixed in the vertical direction, and a rotary actuator 39 is fixed to the support plate 38. A product tray 40 is horizontally connected to a rotary shaft 39a of the rotary actuator 39.

Further, the take-out means E is also provided with a chuck 41 as an example of the scrap residue receiver. That is,
As shown in FIGS. 1, 2 and 8 (b), the cylinder 42 is attached to the support plate 34, and at the tip of the cylinder rod 42a which is driven forward and backward by the cylinder 42 in the longitudinal direction,
A support plate 43 extending in the width direction is fixed, and the support plate 43 is fixed.
The chucks 41, 41 are provided at both ends of the.

With this structure, the sheet material 1 is sandwiched between the pressing rolls 2 and 2, and the knob 5 is manually rotated to move the leading end of the sheet material 1 to the feed roll 6a and the pressing roll 7.
And let it pass through. Then, when the motor 6 is started, the sheet material 1 is fed out between the feeding roll 6a and the pressing roll 7, and when passing through the cutting means B, the sheet material 1 shown in FIG.
As shown in FIG.
b is detected. When the first detection of the mark 1b is performed, the first counter that counts the number of detections is cleared, and when the detection mark 1b is detected for the fourth time by counting every detection, that is, one set of patterns 1a consisting of three rows ... When the first mark 1b of the next set is detected after passing through, it is just when the interval between the sets is below the cutter 11. Then, the feeding of the sheet material 1 is stopped, and the sheet 11 is cut by the cutter 11 to form a cut sheet 1A.

At the time of this cutting, the first counter is cleared again, and this is repeated, and the cut sheets 1A ... Are successively sent out. Therefore, the sheet material 1 is cut into 9 pieces for each set of product patterns 1a ...
It becomes A.

The slider 14 advances to the position of the positioning means C while the cut sheet 1A is adsorbed by the air chuck 17, where the air chuck 17 is released to place the cut sheet 1A on the positioning stage 18, and this time. Holds the cut sheet 1A on the positioning stage 18 side by vacuum suction.

At this time, the posture of the cut sheet 1A is as shown in FIG.
As shown in (a), when one of the sensors 21 and 22 is also inside (downside) of the positioning mark 1c, as shown in FIG.
As shown in (b), the Y-axis motor 20 is driven to move the positioning stage 18 downward in the direction of arrow a so that both sensors 21 and 22 are positioned outside (upper side) the positioning mark 1c. Then, as shown in FIG. 4C, the Y-axis motor 2
0 is driven to move the positioning stage 18 upward in the direction of the arrow b so that the one sensor 22 comes into contact with the positioning mark 1c. Subsequently, the θ-axis motor 19 is driven to rotate the positioning stage 18 in the clockwise direction in the direction of arrow c to bring it into the state of FIG. 4 (d). Subsequently, as shown in FIG. 4 (e), the Y-axis motor 20 is driven to move the positioning stage 18 upward in the direction of arrow d so that one sensor 22 contacts the positioning mark 1c. The positioning stage 18 is driven to rotate clockwise in the direction of arrow e, and the sensors 21,
Is close to the positioning mark 1c. By repeating this, as shown in FIG.
Both 2 are in contact with the positioning mark 1c. This completes the positioning of the cut sheet 1A.

When the positioning of the cut sheet 1A is completed,
The ball screw 25 is rotated by the drive of the carry motor 24, and the mounting plate 26 of the clamper unit moves from the position shown in FIG. 1 to the positioning stage 18 on the left side. In this state, the upper and lower clampers 28, 28 are provided with a gap for accommodating the cut sheet 1A, and the cut sheet 1A is accommodated in this gap.
Is housed. When the mounting plate 26 of the clamper unit arrives at the positioning stage 18 and stands still, the clampers 28, 2
8 is closed and holds the cut sheet 1A in the width direction.

After clamping, the tension cylinders 30 apply tension to the cut sheet 1A by pulling the clampers 28, 28 provided on the clamper mounting plate 27 on both sides in the width direction.

Cut sheet 1A thus positioned
After clamping both sides of the sheet by the clamper unit, the suction holding by the positioning stage 18 is released, the ball screw 25 is rotated by the driving of the transport motor 24, and the mounting plate 26 is moved forward to move the cut sheet 1A.
At the time of this movement, as shown in FIG. 5, when the first feed detection mark 1b1 is detected by the second sensor 23, the second counter for counting the drive pulse of the motor 24 is cleared. The distance S from the second sensor 23 to the first punching position is preset as the initial value S.
Therefore, the conveyance motor 24 is driven to advance the cut sheet 1A by the initial value S, and the conveyance motor 24 is stopped at the first punching position of the punching means D.

As shown in FIG. 5, during this forward movement of the cut sheet 1A, when the second feed detection mark 1b2 is detected by the second sensor 23, the counter value L1 of the driving pulse by the second counter is stored, and When the next feed detection mark 1b3 is detected, the counter value L2 of the drive pulse by the second counter is stored. The distance R1 between the feed detection marks 1b1 and 1b2 from the counter values L1 and L2,
The distance R2 between the feed detection marks 1b2 and 1b3 is calculated by calculation.

At the first punching position shown by the solid line in FIG. 5 and shown in FIG. 6 (a), when the transport motor 24 is temporarily stopped, the upper die 32 descends and the first row of the cut sheets 1A is moved. The pattern 1a ... of three products is punched out. Upper mold 32
Is lifted and the product is taken out by the take-out means E as described in detail later. Next, as shown in FIG. 6 (b), the transport motor 24 is driven again to move forward by the distance R1 calculated above, and temporarily stops at the position where the patterns 1a ... Of the three products in the next row are punched out, The product is punched out and the product is taken out in the same manner as in. Further, as shown in FIG. 6C, the carry motor 24 is driven again to move forward by the distance R2,
.. are temporarily stopped at the positions where the patterns 1a ...

The receipt of the punched product will be described. As shown in FIG. 7, the product tray 40 is a cylinder 37.
When the cylinder rod 37a is advanced by the drive of, the cylinder rod 37a also advances and is positioned below the upper mold 32. Therefore, in each of the punching steps described above, each time the upper die 32 is raised, the cylinder 37 is driven to advance the product tray 40, and the product is received when the product separates from the upper die 32 and falls. Product pattern 1a in the last row at the position shown in FIG. 6 (c)
When the product is received after the ... Is punched, it means that all the products of the cut sheet 1A are received in the product tray 40.

Then, as shown in FIG. 8 (a), the conveying motor 24 is driven to advance the cut sheet 1A 'left behind by a predetermined distance K, and the cylinder 42 is driven to move the cylinder rod 42a. 8 (b) is advanced to the position shown by the chain double-dashed line, and the front ends of the scraps 1A 'are grasped by the chucks 41, 41. Next, the cut sheets 1A ′ that have been left as the scrapers due to the opening of the clampers 28, 28 can move together with the chucks 41, 41. Next, the cylinders 37 and 42 are driven to retract the cylinder rods 37a and 42a.

Next, as shown in FIG. 7, the product tray 40 is rotated 90 degrees in the horizontal direction by the rotary actuator 36, and is advanced by the cylinder 37 so that the product box 44 is moved.
The product can be collected by positioning it above (shown in FIG. 1) and rotating it 90 degrees vertically by the rotary actuator 39 to drop the product into the product box 44. The scrap 1A ′ drops downward by loosening the chucks 41, 41. If an opening (not shown) is provided in the mounting table 33 and a recovery box is installed below the opening, it is possible to collect the scraps dropped from the chuck in the recovery box.

The number of patterns formed on the cut sheet is not limited to one row of three and three rows of one set.

[0029]

As described above, the positioning stage is moved and rotated so that the positioning sensor is aligned with the positioning mark, and the feed detection mark is detected by the second sensor to determine the punching position. Since there is no influence of misregistration in printing or elongation of the sheet after drying, the correct punching position is always determined, so that the precision quality of the punched product can be improved.

Since a roll-shaped sheet material is sent out, the cutting position is detected and cut, the positioning is performed, the punching position is detected, the pattern is punched, and the product is received in the product tray for each punching, so that complete automation can be achieved. Higher work efficiency can be realized.

[Brief description of drawings]

FIG. 1 is a plan view showing the overall configuration of an embodiment of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is an enlarged plan view showing a sending means and a cutting means.

FIG. 4 is an explanatory diagram illustrating a positioning operation by a positioning unit.

FIG. 5 is an enlarged plan view showing punching means.

FIG. 6 is an explanatory view for explaining a punching operation by a punching means step by step.

FIG. 7 is an enlarged plan view showing the take-out means together with the operation.

FIG. 8 is an enlarged plan view showing the operation of taking out the scraps by the taking-out means.

[Explanation of symbols]

 A feeding means B cutting means C positioning means D punching means E ejection means 1 sheet material 1a pattern 1b feed detection mark 1c positioning mark 1A cutting sheet 12 first sensor 18 positioning stage 19,20 driving means 21,22 positioning sensor 23 second 2 sensor 40 product tray 41 punch residue holder (chuck)

Claims (2)

[Claims] 1. A punching device for punching a pattern from a sheet material, wherein the sheet material is provided with a plurality of patterns to be punched, a feed detection mark, and a positioning mark. Means, punching means, and a second sensor for detecting the feed detection mark, wherein the positioning means detects the positioning mark, a positioning stage for sucking and holding the sheet material, Drive means for moving and rotating the positioning stage, wherein the positioning stage is moved and rotated by the driving means to align the positioning sensor with the positioning mark, and when the positioned sheet material moves from the positioning means. The feed detection mark is detected by the second sensor to determine the punching position, and the punching is performed. Automatic punching device of the sheet material, characterized in that punching the pattern by the step. 2. A punching device for punching a pattern from a sheet material, wherein the sheet material is in the form of a roll, and a plurality of sets are continuously provided with a plurality of patterns to be punched as one set, and a feed detection mark and , A positioning mark is provided, and the punching device includes a sending means, a cutting means, a positioning means, a punching means, first and second sensors for detecting the feeding detection mark, and a take-out means. The feeding means is for feeding the roll-shaped sheet material to the cutting means, and the cutting means is for cutting the roll-shaped sheet material into a cut sheet, The positioning means includes a positioning sensor for detecting the positioning mark, a positioning stage for sucking and holding the sheet material, and a driving means for moving and rotating the positioning stage. The take-out means comprises a product tray and a scrap tray, and when the sheet material is moved by the delivery means, the feed detection mark is detected by the first sensor to determine a cutting position, The cutting sheet cut by the cutting means into a set of a plurality of patterns is supported by the positioning stage, and the positioning stage is moved and rotated by the driving means to align the positioning sensor with the positioning mark and perform positioning. When the cut sheet thus moved moves from the positioning means, the punching position is determined by detecting the feed detection mark by the second sensor, the pattern is punched by the punching means, and the product tray is advanced every time the pattern is punched. An automatic punching device for sheet materials, characterized by receiving the product.