JPH04343698A - Sheet material cutting device - Google Patents

Abstract

PURPOSE:To prevent the breakage of a moving edge when a cover member (upper cover) is opened in the cutting work of a sheet material by the moving edge. CONSTITUTION:A moving edge 33a is driven along a fixed edge 33b by a cutter motor 52, and a sheet material 11 is pinched and cut. These edges 33a, 33b are covered by an openable upper cover 2a against a lower frame 2b. A micro- switch 40 and a fixed shaft 78 are arranged on the lower frame 2b, and an actuator 2c operating the micro-switch 40 and a hook 77 coupled with the fixed shaft 78 are arranged on the upper cover 2a. The coupling state of the hook 77 with the fixed shaft 78 is locked by a lock solenoid 41 during the operation of the cutter motor 52, i.e., during the cutting work of the moving edge 33a, thus the opening of the upper cover 2a is inhibited.

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 sheet material by driving a movable blade along a fixed blade.

0002

2. Description of the Related Art A sheet material cutting device is known in which a sheet material to be cut is placed on a wide fixed blade and the sheet material is cut by driving a movable blade along the fixed blade. This sheet material cutting device can be used by being incorporated into a laminating device as shown in FIG. 8, for example.

The main body 100 of the laminating apparatus includes an upper cover 100a and a lower frame 100b, each of which has a thermally reactive upper laminate film 102a inside.
Upper laminated film roll 101a formed by winding
and a lower laminate film roll 101b formed by winding the lower laminate film 102b. However, FIG. 8 shows a state in which the upper cover 100a is opened using solid lines. Each laminating film roll 1
Laminate film 1 peeled from 01a, 101b
02a and 102b are tension shafts 103a attached to the laminating rollers 104a and 104b that are in pressure contact with each other.
, 103b, and are placed in an overlapping state, and tension is applied by pull rollers 106a, 106b. Laminating rollers 104a, 10
Heaters 105a and 105b for heating the rollers are housed inside the roller 4b.

[0004] A paper feed table 109 equipped with a start button 115 is provided upstream of the laminating rollers 104a, 104b, and an object to be laminated 113 set on the paper feed table 109 has upper and lower laminating films 102a, 102b.
The laminating rollers 104a and 104b are inserted into the nip portion where they meet. The object to be laminated 113 is sandwiched between the upper and lower laminating films 102a and 102b under pressure and heat by a pair of laminating rollers 104, and is conveyed by a pair of pull rollers 106. The rear ends of the laminating films 102a, 102b and the object to be laminated 113 are detected after a certain period of time by the original detection sensor 114, which is a transmission-type sensor disposed downstream of the pair of pull rollers 106. laminate film 102a,
The sheet material cutting device 107 disposed downstream of the document detection sensor 114 cuts the sheet material 102b.

[0005] The sheet material cutting device 107 has a fixed blade 107b disposed on the lower surface side of the laminate films 102a and 102b in a horizontal direction with respect to the transport direction A thereof, and a fixed blade 107b that moves horizontally while rotating along the fixed blade 107b. moving blade 10
7a, and the laminate films 102a, 102b are sandwiched between a fixed blade 107b and a movable blade 107a and cut.

The lower frame 100b includes a lower laminating film roll 101b, a lower tension shaft 103b, a lower laminating roller 104b, a heater 105b, a lower pull roller 106b, a cutter 107b, and a document detection sensor 114.
On the other hand, the upper cover 100a has an upper laminated film roll 101a, an upper tension shaft 103a,
An upper laminating roller 104a, a heater 105a, an upper pull roller 106a, etc. are provided. The upper cover 100a has a fixed shaft 108 with respect to the lower frame 100b.
It is attached so that it can rotate around the upper cover 10.
Hook 110 rotatably attached to lower frame 1
By engaging with a fixed shaft 111 fixed on the 00b side, the upper cover 100a is closed with respect to the lower frame 100b, and a predetermined pressure is applied to the laminating rollers 104a, 104b and the pull rollers 106a, 106b.

A microswitch 112b is attached near the center of the upper part of the lower frame 100b, and a portion of the upper cover 100a serves as an actuator 112a to operate the microswitch 112b. That is, the microswitch 112b and the actuator 112
constitutes a safety device 112 comprising a lower frame 10
When the upper cover 100a is opened with respect to 0b, the actuator 112a moves away from the microswitch 112b, turns off the power to the pull roller pair 106, the movable blade 107a of the sheet material cutting device 107, etc., and at the same time turns off the operating parts in the device main body 100. It is designed to stop safely.

[0008]

However, in the sheet material cutting device described above, when the hook 110 is disengaged and the upper cover 100a is opened while the movable blade 107a is cutting the laminate films 102a, 102b, The safety device 112 was activated and the movable blade 33a stopped halfway between the laminate films 102a and 102b, and there was a risk that the movable blade 33a would be damaged by the uncut laminate films 102a and 102b.

That is, when the upper cover 100a is opened, the pull rollers 106a, 1, which had previously sandwiched the laminate films 102a, 102b and applied tension thereto, are removed.
Pull roller 106 on the upper cover 100a side of 06b
a moves in the direction of arrow P in FIG.
02a and 102b are opened, a force in the direction opposite to the direction of arrow A is directly applied to the movable blade 107a by the laminate films 102a and 102b, and as a result, the movable blade 1
07a may be damaged.

Furthermore, at the same time as the upper cover 100a is opened, the upper pull roller 106a and the upper laminating roller 104a rise, and the upper laminate film 102a that has been wrapped around both rollers rises accordingly. , There is also a risk that the movable blade 107a may be damaged.

[0011] In addition to damaging the movable blade 107a, the uncut laminate films 102a and 102b
It was complicated to have to cut it by hand.

Therefore, the present invention locks the cover member in a closed state during the operation of the movable blade when the driving means issues an operation signal, so that the upper cover is opened during the cutting of the sheet material and the sheet material is not cut. An object of the present invention is to provide a sheet material cutting device that prevents a movable blade from being damaged by the material.

[0013]

[Means for Solving the Problems] The present invention has been made in view of the above-mentioned circumstances, and for example, as shown with reference to FIG. The fixed blade (33b) is moved along the fixed blade (33b).
In a sheet material cutting device (33) that cuts the sheet material (11) by sandwiching it between the movable blade (33a) and the movable blade (33a),
A cover member (2a) that can be opened and closed to cover the fixed blade (33b) and the movable blade (33a), and a safety device (2a) that locks the cover member (2a) in a closed state by an operation signal from the drive means (52). 70).

[0014] Moreover, this sheet material cutting device (33)
It can be mounted on a laminating device (1) for laminating objects (10) with heat-reactive laminating films (28, 28').

[0015]

[Operation] Based on the above configuration, when the driving means (52) is started, the movable blade (33a) moves along the fixed blade (33b), and there is a space between the fixed blade (33b) and the movable blade (33a). The sheet material (11) can be sandwiched and cut. In this way, the movement of the movable blade (33a) is controlled by the drive means (5).
Since it is performed in response to the operation of 2), the driving means (52)
The safety device (70) is activated by the operation signal issued during operation.
By locking the cover member (2) in the closed state, opening of the cover member (2a) is prohibited during operation of the drive device (52), that is, during operation of the movable blade (33a). Therefore, when the movable blade (33a) is in the middle of the sheet material (11) while cutting the sheet material (11),
The cover member (2a) is not opened, and the cover member (2a) can be opened only by the movable blade (33a).
only when it is stopped.

[0016]

[Example] The present invention will be explained below based on an example in which the present invention is incorporated into a laminating apparatus.

First, the overall structure of the laminating apparatus will be explained with reference to FIG.

The main body 1 of the laminating apparatus includes a lower frame 2b and a cover member (upper cover) 2a, and a paper feed tray 95 is formed on the front side (right side in the figure) of the lower frame 2b. A transmission-type paper feed sensor 13 is disposed on the paper feed table 95 to detect when the object 10 to be laminated is inserted. Film rolls 27 and 27' each having a laminated film 28 and 28' wound therein are loaded into the upper cover 2a and the lower frame 2b, respectively. The laminate films 28, 28' are tension shafts 2
The rollers 30 and 30' are wrapped around the laminating rolls 30 and 30' via rollers 3 and 23'.

Laminating heaters 29, 29' for heating the laminating rollers 30, 30' are incorporated inside the laminating rollers 30, 30', so that the laminating rollers 30, 30'
, 28' and place the object 1 to be laminated between them.
0 is glued and laminated.

Pull rollers 36, 36' are disposed downstream of the laminating rollers 30, 30', and the pull rollers 36, 36' apply the laminating film 28, 28' pulled out from the sheet rolls 27, 27' to the laminating roller 36, 36'. A predetermined tension is applied via 30, 30'.

Further downstream of the pull rollers 36, 36', a sheet material cutting device 33 is provided, and a movable blade 33a is provided.
The rear end of the laminated sheet 11 is cut by moving the blade while being pressed against the fixed blade 33b. Note that the sheet material cutting device will be described in detail later.

Next, the structure of the frame will be explained.

The lower frame 2b has a lower film roll 27
', lower tension shaft 23', lower laminating roller 30'
, lower laminate heater 29', sheet material cutting device 33,
The upper cover 2b supports the paper feed tray 95, etc.
It supports the upper film roll 27, the upper tension shaft 23, the upper laminating roller 30, the upper laminating heater 29, etc. The upper cover 2a is connected to the lower frame 2b.
It can be opened upward with the fulcrum 79 as the center of rotation. The upper cover 2a and the lower frame 2b are arranged such that a hook 77 with a handle 76 supported on the upper cover 2a side is attached to the lower frame 2b.
The laminating rollers 30, 30' and the pull rollers 36, 3 are fixed in the closed state by engaging with the fixed shaft 78 on the side.
6' with a predetermined force.

[0024] A microswitch 40 is installed in the lower frame 2b.
is arranged, and a part of the upper cover 2a is the actuator 2c.
When the upper cover 2b is opened, the microswitch 40 is turned off by the actuator 2c, and the movement of the entire apparatus including the movement of the movable blade 33a is stopped. A lock solenoid 41 is connected to the hook 77, and when the lock solenoid 41 is turned on, the hook 77 swings in accordance with the movement of the plunger 41 and engages with the fixed shaft 78, thereby locking the upper cover 2a.
is locked to the lower frame 2b, making it impossible to release it.

Next, the configuration of the sheet cutting device 33 will be explained using FIG. 2.

The movable blade 33a is a disc rotatable around a movable blade shaft 58 provided upright on a slide plate 57, and is pressed against the fixed blade 33b by a pressure spring (not shown). The slide plate 57 is movable on the rail 56 along the fixed blade. A wire 53 pulls the slide plate 57 in the cutting direction by a cutter motor 52 serving as a driving means.

51a and 51b are cutter sensors,
The position of the slide plate 57 in the left-right direction with respect to the fixed blade 33b is detected.

Reference numeral 52 denotes a cutter motor, and rotation is transmitted from a cutter drive gear 53 fixed on an output shaft to a wire drive gear pulley 54. The drive gear pulley 54 has a tensioned wire 53 between it and a pair of idler pulleys 55, and the rotation of the cutter motor 52 is converted into a linear motion of the wire 53 via the drive gear pulley 54, and the movable blade The laminate sheet 11 is cut by moving the blade 33a along the fixed blade 33b.

Next, the drive system of the laminating apparatus 1 will be explained using FIG. 3.

The main motor 42 is fixed to the lower frame 2b via a mounting member (not shown), and a motor gear 43 and a clock disk 45 are fixed to the output shaft of the main motor 42, respectively. The rotation of the motor gear 43 is caused by the pull roller gear 67.
is transmitted to the pull roller 36' via.

The clock disk 45 has a plurality of slits arranged at equal angles, and a clock sensor 47 consisting of a transmission type optical sensor for detecting the slits is provided near the clock disk 45. There is.

Next, the operation when laminating the object 10 to be laminated will be explained with reference to FIG.

When the object 10 to be laminated is placed on the paper feed tray 95 and inserted into the insertion slot and detected by the paper feed sensor 13, the main motor 42 is turned on and the pull roller 3 is turned on.
6,36' starts rotating. Laminating film 28,
28' is pulled by the pull rollers 36, 36', and the laminating rollers 30, 30' are driven to rotate. The unbonded laminate films 28, 28' are
The laminating rollers 30, 30' are heated to a predetermined temperature by the laminating heaters 29, 29'.
The heat-reactive adhesive applied to the surface of the laminate films 28, 28' has tackiness.

The object to be laminated 10 is fed into the nip portion of the laminating rollers 30, 30', and is pressed between the heated upper and lower laminating films 28, 28' by the laminating rollers 30, 30'. , laminated.

When the paper feed sensor 13 detects the rear end of the object to be laminated 10, the clock sensor 47 detects the clock disk 4.
Start counting the number of 5 slits. After the distance from the paper feed sensor 13 to the sheet material cutting device 33 is measured based on this count, the main motor 42 is turned off and the transport of the laminated object 10 after the lamination process is stopped. At the same time, the cutter motor 52 is turned on, and the movable blade 33a cuts the rear ends of the continuous laminate films 28, 28' that seal the object 10 to be laminated, and the completed laminate sheet 11 is delivered to the discharge port (
(not shown).

By repeating the above series of laminating processing operations, the objects to be laminated 10 are processed one after another.

Next, the control and operation of the laminating apparatus 1 will be explained with reference to the block diagram of FIG.

[0038] In the figure, the control operation is performed by ROM, RAM
The well-known one-chip microcomputer (
(hereinafter referred to as MCOM) 60, and the input ports P0 to P3 of this MCOM 60 are used to measure the paper feed sensor 13 on the paper feed table 95 and the surface temperature of the laminating rollers 30 and 30', respectively. A temperature sensor (not shown) configured with a thermistor, a clock sensor 47 that counts the amount of rotation of the main motor 42 and the amount of movement of the circumferential surface of the pull roller 36', and a clock sensor 47 that counts the amount of rotation of the main motor 42 and the amount of movement of the circumferential surface of the pull roller 36', and a clock sensor 47 that counts the amount of rotation of the main motor 42 and the amount of movement of the circumferential surface of the pull roller 36', and a clock sensor 47 that measures the end of cutting of the movable blade 33a in the sheet material cutting device 33. Each signal from the left and right cutter sensors 51a, 51b, etc., is input.

In addition, the output ports F0 to F3 are provided with laminate films 28, 28' by rotating a pull roller 36'.
ON/OFF operation of the main motor 42 to transfer the laminate sheet, ON/OFF operation of the lamination heaters 29 and 29' to keep the surface temperature of the lamination rollers 30 and 30' constant, and continuous operation of the laminate sheet 11 after lamination processing. The lock solenoid 41 locks the hook 77 to prevent the safety device from operating by opening the upper cover 2a during the ON/OFF operation of the cutter motor 52 for cutting the laminate films 28, 28' and the operation of the movable blade 33a. Each output signal such as ON/OFF operation is output.

The reading of the input signal, the ON/OFF operation of the load, and the control of each set value thereof are executed according to a program stored in the ROM in the MCOM 60.

Next, the locking mechanism during operation of the movable blade 33a according to the present invention will be explained using FIGS. 2, 5, and 6.

First, turn on the cutter motor 52 (S
302). As a result, when the movable blade 33a starts moving and turns off one cutter sensor that was in the ON state,
This becomes a drive signal and turns on the lock solenoid 41.
and prohibits opening of the upper cover 2a (S303). While the movable blade 33a is cutting the laminate sheet 11, the signals from the cutter sensors 51a and 51b are constantly monitored.
If one of them is turned on, the cutter motor 52 is turned off (S305). As a result, the movable blade 33a returns to the home position and the cutting is completed, and the drive signal is turned off, so the lock solenoid 41 is turned off and the upper cover 2a can be opened (S306). As a result, cutting of the laminate sheet 11 by the movable blade 33a is completed (S307).

FIG. 7 shows an example in which the present invention is incorporated into a facsimile machine.

[0044] Reference numeral 501 denotes a roll of thermal paper, which is conveyed while being pressed by a conveyance roller 503 to the recording device 502 . 504 is a fixed blade, and 505 is a movable blade. The recording device 502 and the fixed blade 504 are connected to the paper feed cover 5
It is supported by 11. The paper feed cover 511 is attached to the main body 513
is supported via a rotating shaft 512. A hook 506 is supported by the paper feed cover 511. 50
7 is a hook shaft and fixes the hook 506. 509
is a lock pawl, which restricts the operation of the hook 506 when the solenoid 510 is turned on, making it impossible to open the paper feed cover 511. 514 is a switch arranged in series with the power supply, and is turned off when the upper cover 511 is opened.

According to this, when the movable blade 505 is in operation, the solenoid 510 is turned on, and the lock pawl 509 engages the hook 50.
6 to fix the paper feed device cover 511, the operator or the like releases the engagement of the hook 506 and fixes the paper feed device cover 511.
Even if you try to release 1, it is impossible to do so.

[0046]

As explained above, by prohibiting the opening of the cover member while the drive means is in operation, it is possible to prevent the movable blade from stopping in the middle of cutting.

[0047] This effectively prevents the movable blade from being damaged by the sheet material being cut.

[Brief explanation of drawings]

FIG. 1 is a longitudinal side view showing an outline of a laminating apparatus.

FIG. 2 is a front view of the sheet material cutting device.

FIG. 3 is a diagram showing a drive system of the laminating apparatus.

FIG. 4 is a block diagram as well.

FIG. 5 is a flowchart showing a cutting operation.

FIG. 6 is a timing chart showing a cutting operation.

FIG. 7 is a longitudinal side view showing a facsimile machine equipped with a sheet material cutting device.

FIG. 8 is a vertical cross-sectional side view showing a laminating device incorporating a conventional sheet material cutting device.

[Explanation of symbols]

1 Laminating device 2a Cover member (upper cover) 10
Object (laminated object) 11 Sheet material 28, 28' Laminating film 33
Sheet material cutting device 33a Moving blade 33b Fixed blade 52 Drive means (cutter motor) 70
Safety device

Claims (2)

[Claims] 1. A sheet material cutting device that moves a movable blade including a driving means along a fixed blade, and cuts the sheet material by sandwiching the sheet material between the fixed blade and the movable blade. A sheet material cutting device comprising: a cover member that can be opened and closed to cover a blade; and a safety device that locks the cover member in a closed state based on an operation signal from the drive means. 2. The sheet material cutting device according to claim 1, wherein the sheet material cutting device is installed in a laminating device that laminates objects with a heat-reactive laminating film.