JP4633289B2 - Sheet material cutting method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sheet material cutting method in which a sheet material such as a synthetic resin film is cut in a state of being placed on an underlay plate.
[0002]
[Prior art]
Conventionally, sheet materials such as synthetic resin films are generally produced in a continuous belt-like state. The produced belt-like sheet material is cut into a necessary shape after being processed in a belt-like state. The cutting process may be performed a plurality of times, and it may be necessary to further cut the sheet material once separated. The sheet material is easily deformed, and it is difficult to cut into an accurate shape when trying to cut the sheet material in a separated state.
[0003]
In the case of further cutting the separated sheet material, the sheet material is placed on the underlay plate, and cutting is performed using the underlay plate as a cutting board. If the shape of the underlay plate is made constant and the sheet material is fixed at a fixed position on the underlay plate, it becomes possible to position the sheet based on the underlay plate and cut the sheet material in an accurate shape. .
[0004]
[Problems to be solved by the invention]
When cutting the sheet material fixed on the underlay plate, manpower is required for fixing the sheet material or installing the underlay plate in the cutting device. Therefore, in order to increase the production efficiency for cutting the sheet material, it is necessary to make the size of the sheet material fixed on the underlay plate as large as possible so that the sheet material can be cut many times. . In order to enlarge the sheet material, it is necessary to enlarge the underlay plate.
[0005]
The installation position of the underlay plate to the cutting device is performed by using the periphery of the underlay plate for positioning. If a projection or the like serving as a positioning reference is provided on the cutting device side, it is possible to accurately position the base plate by pressing the positioning peripheral edge of the base plate. However, if the underlay plate becomes too large, operations such as installation on the cutting device become difficult. Moreover, even if the installation work to the cutting device is possible, it is difficult to adjust the position and angle so that the peripheral edge for positioning is pressed against a reference projection or the like. In addition, it cannot be known whether or not the peripheral edge is in contact with the protrusion or the like by moving the base plate. Even if it is possible to confirm that the peripheral edge is in contact with the protrusion by moving the underlying sheet, it is not guaranteed that the peripheral edge is in contact with the protrusion after the confirmation because the underlying sheet has been moved.
[0006]
The objective of this invention is providing the cutting method of the sheet | seat material which can install an underlay board in a cutting device reliably, and can cut | disconnect a sheet | seat material correctly.
[0007]
The present invention is a cutting device comprising a table having a feed mechanism including a clamp and a cutting mechanism, and a base plate having a predetermined shape on which a sheet material to be cut is placed is placed on the table and held by the clamp . In the cutting method of the sheet material that cuts the sheet material while sending the underlay plate gripped by the clamp to the cutting mechanism ,
Multiple contact types so that the position where the underlay plate is installed on the table is detected at intervals in the direction perpendicular to the feed direction at the periphery of the bottom plate on the base end side with respect to the feed direction by the feed mechanism Have a sensor,
A stopper is provided in the vicinity of the contact sensor to prevent an excessive load from being applied to the contact sensor at the time of contact between the contact sensor and the base plate.
When multiple contact sensor detects a contact with the periphery of all underlay plates, it has rows cutting of sheet material while feeding the underlay plate is gripped by the clamping by the feed mechanism to the cutting mechanism,
Based on the detection results of the clamp origin sensor, clamp retract limit sensor, clamp advance limit sensor, and clamp retract deceleration position sensor that detect the position in the feed direction of the clamp, the underlay plate gripped by the clamp is moved in the feed direction. The sheet material cutting method is characterized.
[0008]
According to the present invention, a cutting device for cutting a sheet material includes a table having a feed mechanism including a clamp and a cutting mechanism . The sheet material to be cut is placed on an underlay plate having a predetermined shape. The cutting of the sheet material is performed while the underlay plate is placed on the table and held by the clamp, and the underlay plate held by the clamp is sent to the cutting mechanism . At this time, the base plate gripped by the clamp is moved in the feed direction based on the detection results of the clamp origin sensor, the clamp backward limit sensor, the clamp forward limit sensor, and the clamp reverse deceleration position sensor that detect the position in the clamp feed direction. Moved. A plurality of contact sensors for detecting a peripheral edge on the base end side in the feeding direction by the feeding mechanism among the peripheral edges of the underlying board are provided at positions where the underlying board is installed on the table. In addition, a stopper is provided in the vicinity of the contact sensor to prevent an excessive load from being applied to the contact sensor when the contact sensor and the base plate are in contact with each other. Since the plurality of contact sensors are provided so as to detect the peripheral edge on the base end side with respect to the feed direction, there is no obstacle to the movement when the base plate is sent from the base end side to the front end side in the feed direction. . The plurality of contact sensors are provided at intervals in a direction perpendicular to the feed direction. When all of the plurality of contact sensors detect contact with the periphery of the base plate, the installation position of the base plate is confirmed to be accurate at the plurality of positions, and feeding of the base plate by the feed mechanism is started, Accurate cutting can be performed.
[0009]
In the present invention, the periphery of the base plate is a straight line perpendicular to the feed direction,
The sheet material is cut in a direction parallel to the peripheral edge.
[0010]
According to the present invention, when installing the base plate, the peripheral edge on the base end side with respect to the feed direction is a straight line perpendicular to the feed direction. With a plurality of contact-type sensors arranged with a gap, the installation position in at least the feeding direction can be easily confirmed. The cutting is performed in a direction parallel to the linear periphery in which the installation position is confirmed by a contact sensor. Even if there is a deviation in the installation position in a direction perpendicular to the feeding direction, since the cutting of the feed direction can be carried out at a precise location, the task of installing the underlay plate, the feed direction only, a plurality of contact What is necessary is just to confirm contact with a periphery with a sensor.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a basic concept of positioning a sheet material to be cut in a cutting device by a sheet material cutting method according to an embodiment of the present invention. The sheet material 1 to be cut has a thickness of 1 mm or less, for example, and is unfolded and placed on the underlay plate 2. The underlay plate 2 is, for example, a synthetic resin plate, and has a predetermined shape, for example, a rectangular shape, and a thickness of several mm. The underlay plate 2 functions as a cutting board that receives a cutting blade when the sheet material 1 is cut. FIG. 1A shows a state where the base plate 2 is set at the correct installation position, and FIG. 1B shows a state where the base plate 2 is not set at the correct installation position.
[0012]
Cutting of the sheet material 1 is performed by a cutting device 4 including a table 3 having a feeding mechanism. The underlay plate 2 is installed on the table 3 so that one set of opposing sides 2a and 2b is parallel to the feeding direction and the other set of opposing sides 2c and 2d is perpendicular to the feeding direction. When the base plate 2 is installed on the table 3, the side 2c which is the base end side with respect to the feed direction is gripped by the clamp 5 which is a part of the feed mechanism, of the sides 2c and 2d perpendicular to the feed direction. . When the feed mechanism is operated, the underlay plate 2 gripped by the clamp 5 is conveyed in a direction from the side 2c on the proximal end side toward the side 2d on the distal end side.
[0013]
In the present embodiment, a pair of contact sensors 6 and 7 are arranged in order to confirm the position where the underlay plate 2 is placed on the table 3. The contact-type sensors 6 and 7 are in contact with the base side 2c in the vicinity of the sides 2a and 2b on both sides of the base plate 2 with an interval in the width direction perpendicular to the feed direction. As shown to Fig.1 (a), if both the contact type sensors 6 and 7 are contacting the edge | side 2c, it will be confirmed that installation of the basement board 2 is performed in the correct position. As shown in FIG. 1B, when at least one of the contact-type sensors 7 is not in contact with the side 2c, it can be determined that the base plate 2 is not installed at the correct position. Note that the contact sensors 6 and 7 can be arranged, for example, in the center, or three or more.
[0014]
2 and 3 show a schematic overall configuration of the cutting device 4 of FIG. 2 shows a state in plan view, and FIG. 3 shows a state in right side view with respect to the feeding direction of FIG. A feed mechanism 10 is provided on the table 3. The feed mechanism 10, the clamp 5, and the guide 11 to which the clamp 5 moves are included. The guide 11 extends from the proximal end side in the feed direction to the distal end side, and a cutting mechanism 12 is provided at a position on the distal end side. Regarding the movement of the clamp 5, a clamp origin sensor 13, a clamp backward limit sensor 14, a clamp forward limit sensor 15, a clamp backward deceleration position sensor 16, and the like that detect an optical position are provided. The feed mechanism 10 can perform fixed-size feed that feeds the clamp 5 by a certain distance, for example, with a ball screw or the like. The clamp 5 is opened and closed by, for example, hydraulic pressure, and holds the underlay plate 2 in a closed state. The cutting mechanism 12 is provided with a cutting blade that can reciprocate in a direction perpendicular to the table 3 and whose blade direction is perpendicular to the feed direction. If the cutting blade is operated while the underlay plate 2 is fed by the feed mechanism 10 at a fixed length, the sheet material 1 can be cut by a certain length. The underlay plate 2 is installed so that the base end side 2c shown in FIG.
[0015]
The width W of the table 3 is, for example, about 1.5 m, and the length L to the cutting mechanism 12 is, for example, about 1.5 m. The distance D between the guides 11 is about 0.6 m, for example. The height H of the table 3 is, for example, about 0.9 m. The operator operates on the base end side of the table 3 and operates the emergency stop button 18 provided on the left end of the table 3 when the cutting device 4 needs to be stopped urgently. The cutting device 4 is operated from the operation pendant 19 on the right side of the table 3. A control device 20 is connected to the operation pendant 19.
[0016]
FIG. 4 shows an electrical configuration related to the control of the cutting device 4. A signal is input to the control device 20 in accordance with an operation on the operation pendant 19, and signals from the clamp origin sensor 13, the clamp backward limit sensor 14, the clamp forward limit sensor 15, and the clamp backward deceleration position sensor 16 are also input. . Further, a signal from the emergency stop button 18 is also input. The control device 20 outputs a control signal for performing a cutting operation of the cutting machine mechanism 12, a feeding operation of the feeding mechanism 10, and opening / closing and moving of the clamp 5. Further, signals from the contact sensors 6 and 7 are also input to the control device 20, and if both the contact sensors 6 and 7 are in contact with the side 2 c of the base plate 2, the buzzer 21 is sounded for a certain time.
[0017]
FIG. 5 shows a state in which the sheet material 1 is cut by installing the base plate 2 on the table 3 using the cutting device 4 as seen from a position closer to the front end side of the table 3. A pair of clamps 5 holds the side 2 c of the base plate 2, and feeds the base 3 from the proximal end side to the distal end side along the guide 11. On the underlying plate 2, the sheet material 1 to be cut is spread and fixed, for example, by sticking the periphery with an adhesive tape 22. In the vicinity of the clamp 5, a pair of contact sensors 6, 7 are arranged, and as long as both contact sensors 6, 7 do not contact the side 2 c of the underlay plate 2, the clamp 5 is opened and closed and the clamp 5 is fed. Does not work.
[0018]
FIG. 6 shows an installation state of the contact sensor 6 in the vicinity of the side 2c on the base end side of the base plate 2 shown in FIG. FIG. 7 shows the installation state of the contact sensor 6 in an enlarged manner. The same applies to the other contact sensors 7. As the contact sensors 6 and 7, for example, a commercially available distance variable contact switch can be used. Such a distance variable contact switch can detect the presence or absence of an object with a stroke of about 40 μm in a detection range of 0 to 3 mm, for example. If the contact sensors 6 and 7 function as a stopper for positioning the underlay plate 2, an excessive load is applied to the sensor head. Therefore, a stopper 23 for receiving the underlay plate 2 is provided in the vicinity.
[0019]
The detection of the end face of the underlay plate 2 can also be performed with a laser sensor, a photoelectric tube sensor, an ultrasonic sensor, or the like. In particular, a contact type sensor is recommended in terms of installation area and accuracy.
[0020]
FIG. 7 shows a schematic procedure for cutting the sheet material in the present embodiment. The procedure is started from step s0, and in step s1, the sheet material 1 is mounted at a predetermined position on the base plate 2. The sheet material 1 is mounted at an accurate position using, for example, a jig prepared in advance. In the next step s 2, the base plate 2 on which the sheet material 1 is placed is set on the table 3 of the cutting device 4. In step s3, it is confirmed that the buzzer 21 in FIG. 4 sounds. The buzzer 21 is set to sound for a certain period of time when, for example, both the contact sensors 6 and 7 detect the base plate 2. When the buzzer 21 does not sound, the position of the base plate 2 is adjusted in step s4. If the buzzer 21 sounds in step s3, the sheet material 1 is cut by the cutting device 4 in step s5, and the procedure ends in step s6.
[0021]
Not only the buzzer 21 can be sounded and notified by sound, but also by a lamp or the like. Moreover, although the underlay board 2 has a rectangular shape, it may have another shape as long as it has a fixed shape. If the installation position is confirmed on the base plate 2 in the feed direction with respect to the base plate 2 of a certain shape, accurate cutting is possible.
[0022]
That is, in the present embodiment, a base plate 2 having a predetermined shape on which the sheet material 1 to be cut is placed is placed on the table 3, and the sheet material 1 is cut while feeding the base plate 2. The position where the underlay plate 2 is installed on the table 3 is detected at a peripheral edge 2c of the underlay plate 2 which is the base end side with respect to the feed direction by the feed mechanism 10 with an interval in a direction perpendicular to the feed direction. A plurality of contact sensors 6 and 7 are provided. When all of the plurality of contact sensors 6, 7 detect contact with the peripheral edge 2c of the base plate 2, the sheet material 1 is cut while the base plate 2 is being fed by the feed mechanism 10, so that the contact sensors 6, 7 Is not an obstacle to the movement of the base plate 2 when it is fed from the proximal end side to the distal end side in the feeding direction. When all of the plurality of contact sensors 6 and 7 detect contact with the peripheral edge 2c of the base plate 2, it is confirmed that the installation position of the base plate 2 is accurate at the plurality of positions. It becomes possible to perform accurate cutting by starting feeding of 2.
[0023]
In addition, when the base plate 2 is installed in a rectangular shape or the like and the base plate 2 is installed, at least the peripheral edge 2c on the base end side with respect to the feed direction should be a straight line perpendicular to the feed direction. By using a plurality of contact type 6, 7 sensors arranged on a straight line perpendicular to the feed direction at intervals, it is possible to easily confirm at least the installation position in the feed direction. If the cutting is performed in a direction parallel to the linear peripheral edge 2c for confirming the installation position by the contact sensors 6 and 7, even if the installation position in the direction perpendicular to the feeding direction is deviated, the cutting in the feeding direction is performed. Can be done at the exact location. In this case, it is only necessary to confirm the contact with the peripheral edge 2c with the plurality of contact sensors 6 and 7 in the operation of installing the underlay plate 2 only in the feed direction, and the direction requiring accurate positioning in the installation operation is one direction. The work can be facilitated.
[0024]
【The invention's effect】
As described above, according to the present invention, if the base plate is installed on the table of the cutting device so that the peripheral edge on the base end side in the feeding direction by the feeding mechanism is detected by all of the plurality of contact-type sensors, the cutting is performed. It can be confirmed that the base plate on which the target sheet material is placed is installed at the correct position. Since the underlay plate can be installed at an accurate position with respect to the feed mechanism on the table , it becomes possible to start the feed of the underlay plate by the feed mechanism and accurately cut the sheet material.
[0025]
Further, according to the present invention, the peripheral edge on the base end side with respect to the feed direction of the underlaying plate is a straight line perpendicular to the feed direction, so that it is arranged with a space on the straight line perpendicular to the feed direction. With the plurality of contact sensors, the installation position in the feed direction can be confirmed accurately. Even if there is a deviation in the installation position in the direction perpendicular to the feed direction, the cutting in the feed direction can be performed at an accurate position, so that the work of installing the underlay plate can be easily performed.
[Brief description of the drawings]
FIG. 1 is a diagram showing a concept of confirming an installation position of an underlay plate 2 on which a sheet material 1 is placed by a sheet material cutting method according to an embodiment of the present invention.
FIG. 2 is a simplified plan view of a cutting device 4 for cutting the sheet material 1 of FIG.
3 is a simplified right side view of a cutting device 4 for cutting the sheet material 1 of FIG.
4 is a block diagram showing an electrical configuration related to control of the cutting device shown in FIGS. 2 and 3. FIG.
5 is a perspective view showing a state in which an underlay plate 2 on which the sheet material 1 of FIG. 1 is placed is installed. FIG.
6 is a view showing the vicinity of a side 2c on the base end side of the underlay plate 2 of FIG. 5. FIG.
7 is an enlarged view showing the vicinity of the installation position of the contact sensors 6 and 7 in FIG. 6;
FIG. 8 is a flowchart showing a procedure for cutting the sheet material 1 of FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sheet material 2 Underlay board 3 Table 4 Cutting device 5 Clamps 6 and 7 Contact type sensor 10 Feed mechanism 12 Cutting device 17 Reference line 20 Control device 21 Buzzer

Claims (2)

In the cutting device and a table and a cutting mechanism having a feed mechanism including a clamp, installed underlay plate shape predetermined placing the sheet material to be cut subject on the table is gripped in the clamp, is gripped by a clamp In the sheet material cutting method of cutting the sheet material while feeding the underlay plate to the cutting mechanism ,
Multiple contact types so that the position where the underlay plate is installed on the table is detected at intervals in the direction perpendicular to the feed direction at the periphery of the bottom plate on the base end side with respect to the feed direction by the feed mechanism Have a sensor,
A stopper is provided in the vicinity of the contact sensor to prevent an excessive load from being applied to the contact sensor at the time of contact between the contact sensor and the base plate.
When multiple contact sensor detects a contact with the periphery of all underlay plates, it has rows cutting of sheet material while feeding the underlay plate is gripped by the clamping by the feed mechanism to the cutting mechanism,
Based on the detection results of the clamp origin sensor, clamp retract limit sensor, clamp advance limit sensor, and clamp retract deceleration position sensor that detect the position in the feed direction of the clamp, the underlay plate gripped by the clamp is moved in the feed direction. A method for cutting a sheet material. The peripheral edge of the base plate is a straight line perpendicular to the feed direction,
2. The sheet material cutting method according to claim 1, wherein the sheet material is cut in a direction parallel to the peripheral edge.

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