JPH05104495A - Sheet material cutting device - Google Patents

Abstract

PURPOSE:To display abnormality of the cutting quickly when abnormality is generated in the cutting of the sheet material. CONSTITUTION:A movable blade 34 is fitted to a slide base 108, which moves along a fixed blade 35, through a compression spring 102a freely to be turned around of a shaft. The movable blade 34 is connected to a cutter motor 104 through a wire 105, pulleys 103, 103', and when the motor 104 is rotated, the movable blade 34 is rotated to be moved in the lateral direction B, and cuts the sheet material 10 positioned between the movable blade 34 and the fixed blade 35. Microswitches 101, 101' are arranged at a start point and a terminal point of the movable blade 34, and are connected to a control unit similarly to the motor 104. A cut timer 106a and an abnormality display means 107 are connected to the control unit. When the movable blade 34, which started from the start point to start the cutting work, does not arrive the terminal point after passing a predetermined time set by the timer 106a, a judgement that abnormality is generated in the cutting is performed, and the control unit 106 operates the abnormality display means 107.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet material cutting device for cutting a sheet material by driving a movable blade along a fixed blade, and more particularly, to a control system for outputting an abnormal signal when the cutting is abnormal. Regarding

[0002]

2. Description of the Related Art For example, as a sheet material cutting apparatus mounted on a laminating apparatus, a combination of a fixed blade and a moving blade that moves while rotating along the fixed blade is often used.

As shown in FIG. 9, this sheet material cutting device has a plate-like fixed blade 4 below the sheet material 400 and horizontally long with respect to the traveling direction of the sheet material 400 (direction of arrow A in the figure).
It is equipped with 02. Above the fixed blade 402, the fixed blade 4
A channel-shaped rail 403 is laid along the line 02, and a slide base 404 is engaged with the rail 403 so as to be movable laterally. On the back side of the slide base 404, a shaft 405 with a collar 405a is provided so as to project.
A movable blade 401 is rotatably attached to the shaft 405 via a compression spring 406 interposed between the shaft 405 and the collar 405a.

The movable blade 401 is formed in a disk shape and has a tooth portion 401a on the outer circumference. The movable blade 401 is biased forward by the compression spring 406 described above, and the tooth portion 401 a located below is pressed against the back surface of the fixed blade 402. Therefore, the movable blade 401 is attached to the slide base 404.
When is moved along the rail 403, it is rotated by friction between the blade portion 401a of the movable blade 401 and the back surface of the fixed blade 402.

The slide base 404 is moved and run by a drive motor 409 as shown in FIG. The drive motor 409 is arranged on one end side of the fixed blade 402 and has a pulley 407a attached thereto. A pulley 407b, which is paired with the pulley 407a, is arranged on the other end side of the fixed blade 402, and a wire 408 is wound around both pulleys 407a and 407b. Both ends of the wire 408 are connected to the left and right of the upper portion of the slide base 404.

When the drive motor 409 is activated, the sheet material cutting device having the above-described structure is operated by the pulleys 407a, 407a,
407b, slide base 404 via wire 408
Is moved in the lateral direction, whereby the moving blade 401 moves while rotating, and at this time, the sheet material 400 is cut so as to be sandwiched between it and the fixed blade 402.

The movable blade 401, which has been cut, is stopped by using the micro switch 409b. That is, the microswitches 409a and 40 are provided at the starting point of the moving blade 401 and the ending point of the moving end, respectively.
9b is provided, and the movable blade 401 that has started from the starting point moves the micro switch 409b on the ending point side to the slide base 404.
The moving motor 409 is stopped by operating the moving blade 401, and thus the moving blade 401 is stopped.

In the above description, the starting point and the ending point may be interchanged. That is, the movable blade 401 may be started from the end point side.

[0009]

However, according to the above-mentioned conventional example, although there is no problem when the cutting operation of the sheet material 400 is normally performed, for example, foreign matter is caught and moved during the cutting operation. A problem occurred when the blade 401 was forcibly stopped.

That is, in order for the moving blade 401 to reach the micro switch 409b on the end point side in order for the moving blade 401 to complete a normal cutting operation, when the moving blade 401 is prevented from moving due to foreign matter or the like. However, the driving force from the drive motor 409 continues to be transmitted to the moving blade 401, whereby the moving blade 401 or the driving motor 409 is damaged, or the moving blade 401 suddenly starts moving when foreign matter is removed. In addition to damaging the device itself, there were also safety problems.

Since there is no effective means for notifying such an abnormal state of the movable blade 401, the discovery of the abnormality tends to be delayed, and there is a possibility that damage may be increased.

Therefore, an object of the present invention is to provide a sheet material cutting device capable of preventing damage to the machine and safety problems in advance by promptly notifying the operation abnormality of the movable blade. And

[0013]

The present invention has been made in view of the above circumstances. For example, referring to FIG. 1, a movable blade (34) having a driving means (104) is provided. ,
In the sheet material cutting device (33), which moves along the fixed blade (35), and sandwiches the sheet material (10) between the fixed blade (35) and the movable blade (34) to cut, Position detecting means (10) arranged at the starting point and the ending point of (34) and detecting the moving blade (34) and outputting a signal.
1, 101 ') and the position detecting means (101) on the starting side
The control unit (106) that outputs a drive signal to the drive unit (104) in response to the output of the control unit, and the first timer unit (106a) that starts timekeeping in response to the drive signal. (106) is the first timer means (106)
An abnormal signal is output when the predetermined time set in a) has passed and the position detecting means (101 ') on the end point side has no output.

In this case, the control unit (106) reverses the driving means (104) by an abnormal signal to return the movable blade (34) to the starting point, or the abnormal signal causes the abnormal display means (107) to operate. You may make it operate.

Further, there is provided a second timer means (106b) (see FIG. 8) for starting timekeeping in response to an abnormal signal from the control section (106), and a predetermined time set in the second timer means has elapsed and the starting point. The control unit (106) may stop the driving unit (104) when there is no output from the position detecting unit (101) on the side.

[0016]

Based on the above construction, the drive signal generated by the control unit (106) causes the moving blade (34) at the starting point to start moving toward the end point, while the same drive signal causes the first timer means (106a) to move. The clock starts. By the way, after the movable blade (34) starts moving, the fixed blade (3
5) time until the sheet material (10) is correctly cut to reach the end point side position detection means (101 '), that is, the control unit (106) outputs a drive signal, When the time until the position detecting means (101 ') on the side outputs a signal is, for example, the cutting time t, the moving blade (34) detects the position detecting means (10) on the end side even after the cutting time t.
When it does not arrive at 1 '), this state can be regarded as an abnormal state. Therefore, the set time t1 for the first timer means (106a) for starting the time measurement by the drive signal
Is set so that t1> t, when there is no output from the position detection means (101 ') on the end point side even if the set time t1 is up, this is set to an abnormal state and the control unit (1
06) outputs this as an abnormal signal, so that the abnormal state can be promptly notified.

By this abnormal signal, the control unit (106)
By reversing the driving means (104) and returning the movable blade (34) to the starting point, the abnormal state of the movable blade (34) can be automatically canceled without human intervention, and an abnormal indication is displayed. By operating the means (107), an operator or the like can be immediately notified of the abnormal state. As the abnormality display means (107), for example, display by lighting a lamp or display of sound by a buzzer or the like can be used.

Further, it may be possible that the moving blade (34) in an abnormal state cannot advance to the end point side and cannot return to the starting point side. At this time, the control unit (106) A second timer means (106b) for starting time measurement by an abnormal signal is provided, and a first timer means (106b).
Similarly to step a), the predetermined time t2 is set in the second timer means (106b). Then, if the moving blade (34) does not return to the starting point even after the lapse of the predetermined time t2, that is, if there is no output from the position detecting means (101) on the starting point side,
The drive means (104) is stopped via the control unit (106). As a result, the movable blade (34) and the drive means (10
It is possible to cut off the harmful driving force applied to 4).

The reference numerals in the parentheses are for the purpose of contrasting with the drawings, but do not limit the structure in any way.

[0020]

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

First, with reference to FIG. 2, the overall construction of the laminating apparatus 1 incorporating the sheet material cutting device 33 according to the present invention will be outlined.

The main body 2 of the laminating apparatus 1 is provided with a paper feed table 95 on the front side (on the right side in the figure) for setting the laminate reference article 10. The laminate reference article is set on the back side of the paper feed table 95. A paper feed sensor 13 for detecting that the sheet 10 is inserted into the main body 2 is provided.

The laminating films 28 and 28 ', which are the materials for the laminating process, are arranged on the upper and lower parts of the main body 2 in a rolled state, respectively, and are the sheet rolls 2.
Supplied from 7, 27 '. Laminate film 28,
28 'is wound around the laminating rollers 30, 30' via tension shafts 23, 23 '.

Laminating heaters 29, 29 'are provided inside the laminating rollers 30, 30'.
The upper and lower laminating films 28, 28 'passing through the nip portions of the laminating rollers 30, 30' are heated and pressed. Therefore, at this time, by inserting the laminating object 10 into the nip portion, the laminating films 28, 28 'are formed above and below the laminating object 10.
Can be heat-bonded and laminated.

Pull rollers 36, 36 'disposed downstream of the laminating rollers 30, 30' are laminated films 2 unwound from the upper and lower sheet rolls 27, 27 '.
Applying tension to 8, 28 ', this laminated film 2
8 and 28 'are always pulled and conveyed in a tensioned state.

A sheet material cutting device 33 having a fixed blade 35 and a movable blade 34 is disposed downstream of the pull rollers 36, 36 '. By moving the movable blade 34 along the fixed blade 35, both of them are moved. Cut the rear end of the laminated sheet material sandwiched between. The sheet material cutting device 3
3 will be described later in detail.

The cut sheet material is pulled by the pull roller 3
The sheet is discharged to the outside of the main body 2 by the sheet discharge rollers 37 and 37 'having a peripheral speed slightly higher than the peripheral speeds of 6 and 36'.

Next, the sheet material cutting device 33 according to the present invention.
Will be described in detail with reference to FIG.

The sheet material cutting device 33 is long in the lateral direction,
That is, it has a plate-shaped fixed blade 35 which is long in the lateral direction B perpendicular to the conveying direction A of the laminated sheet material 10. The ridge line portion where the upper surface 35a and the back surface 35b of the fixed blade 35 intersect becomes the blade portion 35c of the fixed blade 35, and the effective length of the blade portion 35c is set to be longer than the lateral width (cutting length) of the sheet material 10. There is. Further, a gate-shaped frame 109 having a cutout portion 109a for allowing the sheet material 10 to pass is fixed to the upper surface 35a of the fixed blade 35. Frame 109
A slide base 108 is disposed on the rear surface of the slide base 108, and the slide base 108 is movable in the lateral direction B along the frame 109. The slide base 108 is provided with a shaft 102 with a flange protruding rearward.
The movable blade 34 having a compression spring 102a interposed between the movable blade 34 and the tsuba.
Is rotatably attached to the shaft. The movable blade 34 is formed in a disk shape, and a blade portion 34a is formed on the outer circumference thereof over the entire circumference. As for the blade portion 34a, the entire moving blade 34 has the compression spring 1
As it is urged forward by 02a, it is pressed against the back surface 35b of the fixed blade 35 at the lower part. Therefore, when the slide base 108 moves, the moving blade 34
Along with this, while moving in the lateral direction B, the negative rotation is caused by friction with the fixed blade 35.

The slide base 108 is moved via the wire 105. Both ends of the wire 105 are connected to the left and right upper portions of the slide base 108, and the pulley 103 axially attached to the starting side of the moving blade 34 of the frame 109 (right side in the transport direction A) and the movement of the frame 109. It is hung around a pulley 103 ′ arranged on the end point side (also on the left side) of the blade 34. The pulley 103 'is fixed to the output shaft of a cutter motor 104 as a driving means. Therefore, when the cutter blade 104 is rotated toward the arrow C1 side, the moving blade 34 ends via the pulleys 103, 103' and the wire 105. When the cutter motor 104 is moved to the side (pulley 103 ′ side) and the cutter motor 104 is reversely rotated to the arrow C2 side, the cutter motor 104 is moved to the starting side (pulley 103 side).

Further, the movable blade 34 with respect to the frame 109
Microswitches 101 and 101 'serving as position detecting means are arranged at the starting point and the ending point, respectively. These micro switches 101 and 101 'are movable blades 3
The slide base 108 serving as the moving base of No. 4 is actuated by direct contact, and outputs a signal.

Micro switch (position detecting means) 10
1, 101 'are connected to a cutter motor (driving means) 104 and a control unit 106 containing a microcomputer as shown in FIG. In addition, the control unit 1
Reference numeral 06 denotes a cut timer 106a as a first timer means.
And the abnormality display means 107 is connected.

The set time t1 of the cut timer 106a is
The moving blade 34 is set to be a little longer than the time required to reach the micro switch 101 'on the end point side after the moving blade 34 starts to move away from the micro switch 101 on the start point and normally cuts the sheet material 10. The abnormality display means 107
Is for notifying an operator or the like of an abnormal state by, for example, blinking a lamp or issuing an alarm according to an abnormal signal output by the control unit 106.

Next, the configuration of the control circuit will be described with reference to FIG.

The control unit 106 includes a central processing unit (C
A PU) 52, a read-only memory (ROM) 53 that stores a control program, and a random access memory (RAM) 54 that stores input data obtained by a signal from the outside are incorporated. Also input port 9
A position detection circuit 57 that detects the movable blade 34 is connected to 0, and loads such as the cutter motor 104 and the abnormality display circuit 51 are connected to the output port 92. Further CPU5
A cut timer 106a that counts the disconnection time is connected to 2.

With this configuration, the RAM 54 receives a signal from the input port 90 and stores it as input data, and the CPU 5 based on this input data.
2 outputs the cutter motor 104 and the abnormality display circuit 51 from the output port 92 according to the control program of the ROM 53.
A driving signal and an abnormality display signal are respectively output to the predetermined operation.

Next, with reference to FIG. 5, a flow for detecting that the moving blade 34 is in an abnormal state will be described.

First, the sheet material 10 is conveyed so that the portion to be cut of the sheet material 10 is located above the blade portion 35c of the fixed blade 35.

A slide base 108 having a rotary blade 34
When the micro switch 101 is on at the starting point (S200), the set time t1 of the cut timer 106a is set to, for example, 1.0 second (S201), and the cutter motor 104 is normally rotated (S202). When the movable blade 34 is moved toward the end point, a rotational force is applied to the movable blade 34 along with the movement, and the sheet material 10 is sandwiched between the fixed blade 35 and the movable blade 34 and cut. When the micro switch 101 'on the end point side is turned on (S203) before the cut timer 106a times out (S205), the forward rotation of the cutter motor 104 is turned off (S204), and the cut timer 106a is cleared. (S222). That is, this is when the sheet material 10 is normally cut by the moving blade 34, and the moving blade 34 reaches the end point.

On the other hand, the micro switch 101 'on the end point side
When the cut timer 106a is timed out (S203) while the switch is not turned ON (S205), it means that an abnormality has occurred in the moving blade 34. At this time, the cut timer 106a is cleared (S206) and the cutter motor The forward rotation of 104 is turned off (S207), and the cutter motor 104 is further rotated in reverse (S208). As a result, the movable blade 34 moves in the opposite direction to the previous direction, returns to the starting point, and turns on the micro switch 101 (S209). The reverse rotation of the cutter motor 104 is turned off (S210), and the error display means 107 displays an error (S223).

On the other hand, when the moving blade 34 at the time of departure is on the end point side, the micro switch 101 is in the OFF state (S200), but after the cut timer 106a is set to 1.0 second (S211), the cutter is set. The motor 104 is rotated in the reverse direction (S212), and then the error display (S223) is performed through S213 to S221. The same operation as described above can be performed. However, the forward rotation and the reverse rotation of the cutter motor 106 are all opposite to the above case. This does not fixedly set the starting point and the ending point of the moving blade 34 with respect to the fixed blade 35, but the starting point is the side where the moving blade 34 starts moving to cut the sheet material 10, and the other side is the ending point. It means that you may decide.

The error display (S223) is timed up (S205) considering that the cut timer 106a is in an abnormal state after the timed up (S205).
It is also possible to do it immediately after. However,
At this point, the abnormal state of the movable blade 34 has not been released yet, and it is dangerous for the worker to start the work of removing the foreign matter that causes the abnormality, for example. Therefore, as shown in the figure, the error display (S223) is displayed on the moving blade 34
Is completely returned, and the reverse rotation of the cutter motor 104 is OF.
Higher safety is assured by carrying out after S (S210).

Further, the set time t of the cut timer 106a
1 is not limited to 1.0 second and can be set arbitrarily.
That is, the set time t1 may be appropriately determined in consideration of the required cutting length of the sheet material 10, the moving speed of the moving blade 34, and the like.

Next, another embodiment will be described with reference to FIGS. 6, 7 and 8, but the same step number (for example, S200) will be used for those that operate similarly to those shown in FIG.
Will be attached and the description thereof will be omitted.

In the embodiment shown in FIG. 5, the case where the moving blade 34 at the start of movement turns on one of the micro switches 101 and 101 ', that is, the case where the moving blade 34 is at the starting point or the ending point will be described. However, a case will be described with reference to FIGS. 6 and 7 in which the moving blade 34 at the start of movement is neither at the starting point nor at the ending point. In conclusion, when the moving blade 34 at the start of the movement is between the start point and the end point, the one shown in FIG. 6 displays an error (S22
3) and FIG. 7 show an error (S223) after the movable blade 34 is returned to the starting point or the ending point.

In FIG. 6, the microswitch 101,
When either one of 101 'is turned on, the cut timer 106a is set (S201, S211), and the cutter motor 104 is immediately rotated (S202, S212) to cut, as shown in FIG. Start work.
On the contrary, when both the microswitches 101 and 101 'are OFF (S200'), the error display (S223) is immediately performed.

7 is the same as that shown in FIG. 6, when the microswitches 101 and 101 'are both OFF (S200'), the cutter motor 104 is immediately rotated in the reverse direction (S208), and the moving blade is moved. 34 to the starting point (S209), and the reverse rotation of the cutter motor 104 is OF
After F (S210), an error display (S223) is performed. This is effective when the moving blade 34 is not at the starting point or the ending point when the sheet material cutting device 33 is started.

In FIG. 8, the movable blade 3 that has left the starting point
No. 4 does not normally reach the end point, but when it cannot return to the start point correctly, the second motor means (reverse rotation timer) 106b is used to turn on the cutter motor 104.
The flowchart which carries out FF is shown. This is to prevent an abnormal load from being applied to the moving blade 34 and the cutter motor 104 when the moving blade 34 cannot normally move toward either the end point side or the starting point side. That is, the start or end microswitches 101, 101 'are OF
Despite the F state (S213, S203), when the cut timer 106a times out (S216, S216).
S205), clear the cut timer 106a (S21
7, S206) to turn off the reverse or forward rotation of the cutter motor 104 (S218, S207), and subsequently set the reverse rotation timer 106b (S300, S305) to rotate the cutter motor 104 forward or reverse. ((S
219, S208), the moving blade 34 is moved toward the end point or the starting point. However, even when the reverse rotation timer 106b times out (S301, S306), when the moving blade 34 does not return to the end point or the starting point, that is, when the microswitches 101 ', 101 do not turn on, this is because the moving blade 34 normally operates. Since it is a case where neither forward movement nor backward movement is possible, the reverse rotation timer 106b is cleared (S302, S3).
07), the forward rotation or the reverse rotation of the cutter motor 104 is immediately turned off (S221, S210).

Before the reverse rotation timer 106b is timed up (S301, S306), the micro switch 10
When either 1'or 101 is turned on (S220, S
209) is when the moving blade 34 has normally returned to the end point or the starting point, and at this time, the reverse rotation timer 106b
Is cleared (S303, S308), the cutter motor 1
04 may be turned off (S304, S309). Further, in the above example, the reverse rotation timer 106b is set to 0.5 seconds, but the cutting length of the sheet material 10 and the moving blade 34
It may be set according to the moving speed of the.

In all of the above embodiments, the position detecting means is not limited to the microswitches 101 and 101 ', but may be any other means. For example, if it is a photoelectric type having a light projecting section and a light receiving section, its position can be detected when the movable blade 34 or the slide base 108 blocks the optical axis.

Further, the position detecting means 101, 101 'may be provided at least at the starting point and the ending point of the movable blade 34, and it does not prevent additional placement between the starting point and the ending point. For example, with respect to the sheet material 10 having a short cutting length, a pair of position detection means is added between the starting point and the end point, whereby the position of the movable blade 34 is detected with higher detection accuracy, and an abnormality is detected. This is effective because it takes less time to do.

[0052]

As described above, according to the present invention,
When there is an abnormality such as a foreign object being caught in the moving blade during the cutting operation of the sheet material, the control section immediately outputs an abnormality signal via the position detecting means and the first timer means. By operating the abnormality display means, it is possible to notify the operator or the like of the "abnormal state", or to positively return the movable blade to the original position. This prevents damage to devices such as the moving blade and drive means, and
The operator can safely remove the foreign matter.

[Brief description of drawings]

FIG. 1 is an overall perspective explanatory view of a sheet material cutting device.

FIG. 2 is a vertical sectional side view of a laminating apparatus equipped with a sheet material cutting device according to the present invention.

FIG. 3 is a block diagram of a sheet material cutting device.

FIG. 4 is a control circuit configuration diagram of the sheet material cutting device.

FIG. 5 is a flowchart of an embodiment.

FIG. 6 is a flowchart of another embodiment.

FIG. 7 is a flowchart of another embodiment.

FIG. 8 is a flowchart of yet another embodiment.

FIG. 9 is a vertical sectional side view of a conventional sheet material cutting device.

FIG. 10 is a front view of a conventional sheet material cutting device.

[Explanation of symbols]

10 sheet material 33 sheet material cutting device 34 moving blade 35 fixed blade 101, 101 'position detecting means (micro switch) 104 driving means (cutter motor) 106 control unit (microcomputer) 106a first timer means (cut timer) 106b second Timer means (reverse rotation timer) 107 Abnormality display means

Claims (4)

[Claims] 1. A sheet material cutting device for moving a movable blade having a drive means along a fixed blade, and sandwiching a sheet material between the fixed blade and the movable blade to cut the sheet material. Position detecting means disposed at a starting point and an ending point, for detecting the moving blade and outputting a signal, and a control section for outputting a drive signal to the driving means in response to an output of the position detecting means on the starting side. A first timer means for starting timekeeping in response to the drive signal, wherein the control unit has a predetermined time set in the first timer means, and the output of the position detecting means on the end point side is A sheet material cutting device characterized in that it outputs an abnormal signal when there is not. 2. The sheet material cutting device according to claim 1, wherein the control section reverses the driving means in response to an abnormality signal and returns the movable blade to the starting point. 3. The sheet material cutting device according to claim 1, wherein the control unit operates the abnormality display means in response to an abnormality signal. 4. A second timer means for starting timekeeping in response to an abnormal signal from the control section, wherein a predetermined time set in the second timer means has elapsed, and there is no output from the position detecting means on the starting point side. The sheet material cutting device according to claim 2, wherein the control unit stops the driving unit.