JPH05229002A - Device for lamination - Google Patents

Abstract

PURPOSE:To prevent inferiority in carrying and damage by applying appropriately tension to a laminate film in cutting by a method wherein a peripheral speed of a rotary blade is made quicker than a peripheral speed of an outer periphery of a pull roller and further, a peripheral speed of an outer periphery of a delivery roller is made quicker than the peripheral speed of the rotary blade. CONSTITUTION:A device for lamination is equipped with a pressurizing and heating means 10 wherein a sheet like laminate object 20 pinched between upper and lower laminate films (6, 6a, 6b) is hermetically treated and a pull roller 15 which carries the hermetically treated laminate object 20. Further, a cutting device 17 which cuts the laminate film 6 having hermetically sealed the laminate object 20 and a delivery roller 19 which delivers the laminate film 6 after cutting are provided thereto. Rotation of a rotary blade 17b of the cutting device 17 is controlled with a control device. In that case, respective peripheral speeds of the rotary blade 17b and the delivery roller 19 are set to be increased in this order with the control device, and required tension is applied to the laminate films.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is designed to sandwich the front and back of a sheet-shaped laminated object with laminated films,
Further, the present invention relates to a laminating apparatus for performing a so-called laminating process in which the objects to be laminated are sealed by pressurizing and heating them.

[0002]

2. Description of the Related Art Conventionally, a sheet-like laminated object has a front surface side and a rear surface side, which are adhered to a heat-reactive laminated film which is slightly larger than the object to be laminated, and by pressing and heating the laminated film. There is known a so-called laminating process in which upper and lower laminate films protruding in a frame shape are fused around the object to be laminated. A laminating device performs this processing, and is often used to enhance the cosmetic appearance and storability of a laminated object sandwiched by transparent films.

FIG. 12 schematically shows a conventional laminating apparatus.

In FIG. 1, the apparatus main body 100 has a lower frame 100b and an upper frame 100a which can be opened and closed with respect to the lower frame 100b. In these upper frame 100a and lower frame 100b, an upper laminate film roll 101a formed by winding a heat-reactive upper laminate film 102a and a lower laminate film roll 101b formed by winding a lower laminate film 102b, respectively. It is arranged. The laminated films 102a and 102b separated from the laminated film rolls 101a and 101b are wound around the pressure / heating rollers 103a and 103b, which are in pressure contact with each other, to be in a state of being overlapped with each other, and thus the pull roller 1
Tension is given by 05a and 105b.
Inside the pressure / heating rollers 103a and 103b,
Heater 106 for heating the rollers respectively
a and 106b are stored respectively.

A transmission type paper feed sensor 120A is located slightly upstream of a pressure / heating roller pair (hereinafter, "pair" will be appropriately omitted and used. The same applies to a pull roller pair and a discharge roller pair described later). It is provided and is the object to be laminated 1
When 10 is detected, the main motor (not shown) is rotated to start the laminating process.

Further, a paper feed table 109 is provided on the upstream side of the pressure / heating roller pair 103, and the objects to be laminated set therein are the upper and lower laminating films 102a and 1a.
Heating / pressurizing rollers 103a, 10 which are the joining portions of 02b.
It is inserted into the nip portion of 3b. Laminate object 110
Is pressed and heated by the pressure / heating roller pair 103 so as to be sandwiched by the upper and lower laminating films 102a and 102b, and is sandwiched, and is conveyed by the pull roller pair 105.

The trailing ends of the laminating films 102a and 102b and the laminating object 110 are the pull roller pair 10
Rotary type cutter unit 1 provided on the downstream side of 5
Cut by 11. The cutter unit 111 includes a fixed cutter upper blade 111a and a rotatably supported cutter lower blade (rotating blade) 111b. As shown in FIG. 13, the cutter lower blade 111b has a rotating shaft 111c.
And the blade portion 111d, the blade portion 111d,
It is fixed by twisting from the back side to the front side in the figure at a predetermined phase angle, and its entire width is equal to that of the laminate film 1.
Width of 02a, 102b (left and right direction with respect to the traveling direction K1)
It is set longer than W. This cutter lower blade 111b
As shown in FIG. 14, the tip of the rotary shaft 111c is
Along with the rotation in the arrow R1 direction, the laminate film 102a and 102b are rotated in the same direction at a predetermined peripheral speed (dashed line), and the laminated films 102a and 102b are sandwiched between the cutter upper blade 111a and cut.

On the upper part of the apparatus main body 100, an operation section 113 is provided.
The operating section 113 is provided with switches 115, 11 for manually setting the conveying speed of the laminating films 102a and 102b and the pull roller pair 105 and the outer peripheral temperature of the pressure / heating roller pair 103, respectively.
6 are arranged.

Next, the control in the conventional laminating apparatus will be described with reference to FIG.

The paper feed sensor 120A is the object 1 to be laminated.
When 10 is detected, lamination starts (S
1). A main motor (not shown) is turned on, the drive is transmitted to the pull roller pair 105, and the laminated film 102
The a and 102b are conveyed by pulling (S2).
After a certain time, the surface temperature T of the pressure / heating rollers 103a and 103b is detected (S3). The surface temperature T is compared with a preset optimum temperature T _S (S4). If the surface temperature T is lower than the optimum temperature T _S , the heaters 106a, 10a
6b is turned on (S5). If the surface temperature T is higher than or equal to the optimum temperature T _S , the heater 106a,
106b is turned off (S6). Next, the paper feed sensor 120
The presence or absence of the laminating object 110 is detected by A (S7). If there is an object to be laminated, the process returns to S3 and the flow is repeated. If there is no object to be laminated 110, the main motor is turned off (S8), the rear end is cut by the cutter unit 111 (S9), and the lamination is finished (S10).

[0011]

However, in the above-mentioned conventional laminating apparatus, the laminating object 1
When laminating 10 and cutting, pull roller 1
Since the peripheral speed of the outer periphery of 05, the peripheral speed of the cutter lower blade (rotary blade) 111b, and the peripheral speed of the outer periphery of the discharge roller 120 are the same and are adjusted to the transport speed of the laminate films 102a and 102b, the following is performed. There was a problem.

As shown with reference to FIGS. 13 and 14, the cutter lower blade 111b has a phase angle and is attached obliquely from the back to the front in the drawing. Then, the cutter lower blade 11 while conveying the laminate films 102a and 102b.
1b is rotated and cut from the rear end. After the cutting, the cut portions of the laminate films 102a and 102b lose tension (tension) and thus hang downward. At this time, the peripheral speed of the cutter lower blade 111b is 10
The rotating shaft 11 has a peripheral speed lower than that of the rotating shaft 11 because it has the same speed as 5
When the laminating films 102a and 102b are placed on the outer periphery of 1c, a loop is formed between the laminating films 102a and 102b and the pull roller 105.
Further, this loop makes it easier to hit the portion A, and as a result, the loop becomes larger between the portion A and the pull roller 105a. Then, due to the increase in the loop, the laminating films 102a and 102b are pulled by the pull roller 105a.
Between the cutter and the cutter upper blade 111a, and pull roller 10
There was a drawback that the laminating object 110 was wound around 5a and was damaged.

When cutting with the cutter unit 111,
If sufficient tension is not applied to the laminated films 102a and 102b, the laminated film 102
Occurrence of a situation where the cutting condition is not good, such as the cuts of a and 102b are not clean.

In addition to this, when the thickness of the laminated films 102a and 102b to be mounted is changed, the user must manually adjust the temperature of the heaters 106a and 106b and set the temperature which is considered to be suitable for the thickness. Therefore, there is a problem that it is difficult to set the optimum temperature. If this adjustment fails, in an extreme case, the object to be laminated is damaged and reproduction becomes impossible.

In any of the above cases, there is a problem that the cosmetic properties and storability of the final product after the laminating treatment are significantly reduced.

Therefore, according to the present invention, the peripheral speed of the rotary blade is appropriately set, or the temperature of the pressurizing / heating means is automatically and optimally adjusted in accordance with the thickness of the laminate film, thereby improving the aesthetic properties and storability. It is an object of the present invention to provide a laminating apparatus capable of producing excellent products.

[0017]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. For example, referring to FIG. 1, the laminating apparatus of the first invention has a second heat-reactive upper side.
Pressurization / heating means (10) for sealing the sheet-shaped laminating object (20) sandwiched by the lower laminating films (6a, 6b), and the sealing treatment via the laminating films (6a, 6b). A pull roller (15) for conveying the already laminated object (20), a cutting device (17) for cutting the laminated film (6a, 6b) that seals the laminated object (20), and a laminated film after cutting ( In a laminating apparatus provided with a discharge roller (19) for discharging 6a, 6b), the cutting device (17) is the laminating film (6).
a, 6b) is formed to be long in the width direction and has a rotary blade (17b) that rotates in the same direction as the pull roller (15) and the discharge roller (19), and the rotary blade (17b).
A control device (70) (FIG. 8) for controlling the rotation of the rotary blade (17) and the peripheral speed of the outer circumference of the pull roller (15) and the rotary blade (17).
The peripheral speed of b) and the peripheral speed of the outer circumference of the discharge roller (19) are set by sequentially increasing the peripheral speed in this order.

The laminating apparatus of the second aspect of the present invention comprises a pressurizing / heating means (10) for hermetically sealing a sheet-shaped laminating object (20) sandwiched by heat-reactive upper and lower laminating films (6a, 6b). ) And the laminate film (6a, 6) having a sample length (L) (FIG. 10).
b) a temperature detecting means (56) (FIG. 8) for detecting a temperature difference of the pressurizing / heating means (10) which changes as it passes through the pressurizing / heating means (10); Based on the thickness detection means (70) (FIG. 8) that determines the thickness of the laminate film (6a, 6b) according to the size, and the thickness information output by the thickness detection means (70),
A control device (70) for controlling the temperature of the pressurizing / heating means (10).

In this case, the temperature detection means (56) may detect the temperature difference of the pressurizing / heating means (10) when the laminated film is loaded.

[0020]

Based on the above construction, the laminating apparatus of the first invention makes the peripheral speed of the rotary blade (17) faster than the peripheral speed of the outer periphery of the pull roller (15), and further the peripheral speed of the outer periphery of the rotary blade (17). The peripheral speed of the discharge roller (19) is made faster than that. That is, the peripheral speed of the member arranged on the downstream side is increased, and the peripheral speed of the laminated film (6a, 6b) is increased.
A proper tension is always applied so that the laminating films (6a, 6b) during cutting do not sag. This prevents the laminating films (6a, 6b) from being wrapped around other members, the conveyance failure of the laminating object (20), and the like.

In the laminating apparatus of the second invention, the laminating film (6a, 6b) having the sample length (L) is passed through the pressing / heating means (10) for pressing / heating the laminating film (6a, 6b). Let At this time, the amount of heat taken from the pressurizing / heating means (10) increases as the thickness of the laminate film (6a, 6b) increases. Therefore, before and after passing the sample length (L), pressurization and
The temperature of the heating means (10) is detected by the temperature detection means (56), and the thickness of the laminate film (6a, 6b) is conversely estimated from the temperature difference. Then, the optimum temperature for the thickness is set by the control device (70), and the laminate film (6a, 6b) is heated by the pressing / heating means (10) at this temperature.

The reference numerals in parentheses are for the purpose of contrasting the drawings, and do not limit the structure of the present invention.

[0023]

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

First, an embodiment of the first invention will be described.

1 and 2, the apparatus main body 1 is shown in FIG.
As shown in FIG. 3, the lower main body R3 includes an upper laminating section R1 pivotally supported by the lower main body R3 by a support shaft 2 and a sheet feeding section R2 pivotally supported by the lower main body R3 by the support shaft 3. ..

The laminating section R1 is provided with a laminating film roll 5a in which a laminating film 6a is wound in a roll shape. The laminating film 6a separated from the laminating film roll 5a is a tension roller 7a and a preheating roller 9a. It is also wound around the pressure / heating roller 10a (pressure / heating means). Further, the lower body R3 is provided with a laminate film roll 5b in which a laminate film 6b is wound in a roll shape, and the laminate film 6b separated from the laminate film roll 5b is a tension roller 7
b, 7c, a preheat roller 9b, and a pressure / heating roller 10b (pressure / heating means) which is in pressure contact with the pressure / heating roller 10a.

In the tension rollers 7a and 7c, the laminated films 6a and 6b are preheat rollers 9a and 9c.
b with a certain length of contact with the preheat roller 9
It is a roller for holding a film that prevents the slack of the laminated films 6a and 6b between the a and 9b and the pressure / heating rollers 10a and 10b and the mutual adhesion of the laminated films 6a and 6b. Further, the laminate roll 5b, the tension rollers 7b, 7c, etc. constitute a laminate film roll unit X in which the laminate roll 5b portion can be detachably attached to the apparatus main body 1.

Preheaters 12a and 12b for heating the preheat rollers 9a and 9b are provided at the central portions of the preheat rollers 9a and 9b.
However, laminating heaters 13a and 13b for heating the pressure / heating rollers 10a and 10b are housed in the central portions thereof, respectively. The preheat roller 9
The surface temperatures of a and 9b are detected by the preheat roller temperature sensor 55 shown in FIG. 8, and the surface temperature of the pressure / heating roller pair 10 is detected by the pressure / heating roller temperature sensor 56.

A pull roller pair 15 consisting of an upper roller 15a and a lower roller 15b which are in pressure contact with each other is arranged downstream of the pressure / heating roller pair 10 (see FIG. 1), and the pulling / heating roller 15a Laminate films 6a and 6b merged at the roller pair 10 and an object to be laminated 2 described later.
0 is pulled in the direction of arrow 16.

Loop guide plates 60a and 60b are provided on the downstream side of the pull roller pair 15, and further on the downstream side, a rotary cutter unit 17 and a discharge roller 19 are provided.
Are sequentially arranged. The rotary cutter unit 17 includes an upper blade 17a and a lower blade 17b, and cuts the rear ends of the laminate films 6a and 6b and the object to be laminated 20.

On the upstream side of the pressure / heating roller pair 10, a paper feed table 21 on which the object to be laminated 20 is set, and an upper guide plate 23 forming a paper feed path 22 together with the paper feed table 21.
Are arranged. At the insertion port 22a of the paper feed path 22,
Pick-up roller 25 that can be brought into and out of contact with paper feed table 21
And a shutter member 26 for restricting the tip of the laminated object 20 to be inserted. Further, a paper feed sensor 27 for detecting the paper feed of the inserted object 20 to be laminated is disposed between the pickup roller 25 and the shutter member 26.

Next, the load applied in the pull-out direction (direction of arrow 16) of the laminate films 6a and 6b will be described with reference to FIG.

In FIG. 3A, the laminated film 6
A is wound around a core metal 30a and constitutes a laminated film roll 5a. The roll shaft 31a, on which the core metal 30a is rotatably mounted, is supported via a tension adjusting nut 33 screwed to a side plate 32 of the apparatus body 1. A tension spring 35 is interposed between the core metal 30a and the tension adjusting nut 33, and the load in the sheet pull-out direction of the laminate film roll 5a can be adjusted by closing the tension adjusting nut 33. ing.

Here, the laminated film roll 5a
Is made of a laminated film 6a having a first thickness. The laminating roll 5b shown in FIG. 3 (b) is composed of a laminating film 6b having a second thickness, and has a core metal 30b.
It is wound around. The core metal 30a of (a) is formed in a straight shape, while the core metal 30b has a flange portion 30c at one end thereof. A core bar identifying switch 36 is formed near the core bar 30b of the side plate 32. When the core bar identifying switch 36 is off, the first bar
The mounting of the core metal 30a is identified, and when it is turned on, the mounting of the second core metal 30b is identified.

Next, the mounting of the laminating film roll unit X in the laminating apparatus will be described with reference to FIGS. 4 (a) and 4 (b).

The laminating roll 5b is composed of a frame 37.
It is installed inside. The laminate film 6b is peeled off from the peeling portion 5c of the laminate roll 5b, and is guided above the laminate film roll unit X via the tension rollers 7b and 7c. In the vicinity of the downstream side of the peeling portion 5c where the laminate film 6b is peeled off, the static elimination needle 40 held by a holding member 39 made of a leaf spring.
Is provided, and the free end of the static elimination needle 40 abuts the surface of the laminated film 6b immediately after peeling to remove static electricity generated at the time of peeling.

FIG. 4 (a) shows the state of the laminated film 6b when the remaining film amount is large, and FIG. 4 (b) shows the state of the laminated film 6b when the remaining film amount is small. Even if the position of the laminated film 6b changes depending on the remaining amount of the film, the static elimination needle 40 is configured to follow the back surface of the laminated film 6b by the elasticity of the holding member 39.
The laminated film 6b that has been peeled off is always discharged by the discharging needle 40, so that the laminated film 6b
It is possible to prevent sticking to other metal parts and malfunction of the device due to static electricity.

The laminated film roll unit X preliminarily mounted with the laminated film 6b as described above has an upper laminating section R1 of the laminating apparatus as shown in FIG.
And the sheet feeding section R2 are opened and inserted into the apparatus from above. At this time, the laminated film roll unit X
Is inserted in the direction of arrow K1 along a rail 41 provided inside the lower body R3, and can be easily mounted.

Next, the drive system of the laminating apparatus will be described with reference to FIGS. 5, 6 and 7.

In FIG. 5, the main motor 42 is fixed to the side plate 32 via a mounting member (not shown), and a motor gear 43 and a clock disc 45 are fixed to the output shaft. A pull roller gear 46 is fixed to the shaft end of the upper roller 15a of the pull roller pair 15 and meshes with the motor gear 43. The clock disk 45 has a large number of slits (not shown) that divide the clock disk 45 in the circumferential direction.
Is formed, and in the vicinity of the clock disk 45,
A clock sensor 47 including a transmissive optical sensor that detects the slit is provided.

Further, in FIG. 6, the cutter motor 62 is also fixed to the side plate 32 via a mounting member (not shown), and the cutter lower blade (rotary blade) 17b of the cutter unit 17 is driven via the motor gear 63 and the cutter gear 64. Has been transmitted. At this time, the drive of the cutter unit 17 and the pull roller pair 15 can be independently controlled.

Further, in FIG. 7, the discharge motor 67 is also fixed to the side plate 32 via a mounting member (not shown), and the drive is transmitted to the lower roller 19b of the discharge roller pair 19 via the motor gear 68 and the discharge roller gear 69. ing. At this time, the driving of the discharge roller pair 19 can also be controlled independently of the cutter unit 17 and the pull roller 15.

Next, the object to be laminated 20 according to the present invention
The operation when laminating is performed will be described.

The object to be laminated 20 is placed on the paper feed table 21 (see FIG. 1), inserted into the insertion port 22a, and the tip thereof is abutted against the shutter member 26. When the object to be laminated 20 is detected by the paper feed sensor 27, the shutter solenoid 49 (see FIG. 8) is turned on and the shutter member 26 is retracted from the paper feed table 21. Along with this, the pickup solenoid 50 is turned on, and the pickup roller 2
5 is lowered and the object to be laminated 20 is pressurized with a constant pressure.

Then, the pickup motor 51 is turned on and the pickup roller 25 starts rotating. The object to be laminated 20 is conveyed by the rotation of the pickup roller 25, and when a preset time elapses, the main motor 4
2 is turned on and the pull roller pair 15 starts rotating. The laminate films 6a and 6b are pulled by the pull roller pair 15, and the pressure / heating roller pair 10 and the preheat rollers 9a and 9b are driven to rotate. The non-bonded laminated films 6a and 6b are heated to a first temperature by preheat rollers 9a and 9b which are preheated, and then a second temperature which is always controlled to a constant temperature by a pressure / heating roller pair 10. Is heated to the temperature of.

The object to be laminated 20 is sent to the nip portion of the pressure / heating roller pair 10 by the pickup roller 25 and heated, and the upper and lower laminating films 6a,
In the state of being sandwiched between 6b, it is pressed and heated by the pressing / heating roller pair 10 to be laminated. The pickup roller 25 is rotated under pressure for a preset time, and then the pickup solenoid 50 operates to activate the pickup roller 2.
1 is retracted from above, and the pickup motor 51 is turned off to stop the rotation.

When the paper feed sensor 27 detects the rear end of the first laminating object 20, the clock sensor 47 starts counting the number of slits in the clock disk 45, and the paper feed sensor 27 to the rotary cutter unit 17 are counted. When the cutting position on the rear end side of the laminating object 20 whose distance is measured reaches the rotary cutter unit 17, the cutter motor 62 is turned on to make the conveying speed of the discharge roller pair 19 faster than the pull roller pair 15. Thus, the rotary cutter unit 17 instantaneously cuts the rear end of the laminating target object 20 after the laminating process with tension applied to the laminating films 6a and 6b. At this time, even if the leading ends of the cut laminated films 6a and 6b ride on the rotary shaft 17c of the rotary cutter lower blade 17b, the pull roller pair 15 causes the rotary shaft 17c of the rotary cutter lower blade 17b to rotate.
Since the peripheral speed of is increased, the loop amount can be reduced. That is, the peripheral speed of the cutter lower blade 17b is made faster than the peripheral speed of the outer circumference of the pull roller pair 15, and further the peripheral speed of the discharge roller pair 19 is made higher than the peripheral speed of the cutter lower blade 17b.
It is possible to cut this while a proper tension is always applied to.

Then, the completed laminating object 20 is ejected to the outside of the apparatus by the ejection roller 19.

As described above, the object 20 to be laminated is laminated by performing a series of laminating operations.

Next, a specific example of this embodiment will be described.

Now, assuming that the conveying speed of the pull roller pair 15 is V ₁ , the cutter lower blade 1 of the rotary cutter unit 17 is
The peripheral speed of 7b is 1.1 to 1.5 V ₁ , the discharge roller pair 19
Was found to be 1.7V _{1 to} 2V ₁ .

In the laminator of the present invention, the pull roller pair 15 has a conveying speed of 40 mm / sec, the rotary cutter unit 17 has a cutter lower blade 17b having a peripheral speed of 45 mm / sec, and the discharge roller pair 19 has a conveying speed. 70 mm
/ Sec was set, and good results were obtained without cutting defects and film clogging.

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

In the figure, the control operation is mainly composed of a well-known one-chip microcomputer (hereinafter referred to as MCOM) 70 having a built-in ROM, RAM and the like as a control device. Input port P _{0 in} this MCOM70
Up to P ₄ are the objects to be laminated 20 to be fed by the pickup roller 25 on the sheet feeding table 21 described above.
Paper feed sensor 27 for detecting the presence or absence of preheat roller 9
a preheat roller temperature sensor 55 composed of a thermistor for measuring the surface temperature of a, 9b, a pressure / heating roller temperature sensor 56 for measuring the surface temperature of the pressure / heating roller pair 10, a core metal of the laminating films 6a, 6b Each signal of the rotation amount of the identification switch 36, the main motor 42, the cutter motor 62, and the discharge motor 67 and the clock sensor 47 for measuring the peripheral speed of the pull roller pair 15, the rotary cutter unit 17, and the discharge roller pair 19 are input. ..

A shutter solenoid 49 for opening / closing the shutter member 26 is turned on / off at the output ports F0 to F8.
OFF operation, ON / OFF operation of the pickup solenoid 50 for pressing the pickup roller 25 onto the object to be laminated 20 from the retracted position with a constant pressure, ON / OFF operation of the pickup motor 51 for rotating the pickup roller 25, laminating film 6a, ON / OFF operation of the laminate heaters 13a and 13b for heating 6b,
Turning on / off the preheaters 12a and 12b for keeping the surface temperature of the pressure / heating roller pair 10 constant, and turning on / off the cutter motor 62 that cuts the laminated sheet after the laminating process from the continuous laminating films 6a and 6b. Outputs such as an off operation, an original detection display 53 for notifying the operator that the object to be laminated 20 (original) is received and entering the laminating operation, and an on / off operation of a paper discharge motor 67 for discharging the laminated sheet after the laminating process The signal is output via the drivers D _{0 to} D ₈ .

The reading of the input signal, the on / off operation of the load, and the control to each set value are
It is executed according to the program stored in the ROM in the MCOM 70.

Next, the control of the roller surface temperature of the preheat rollers 9a and 9b and the pressure / heating roller pair 10 will be described with reference to the flow chart of FIG.

In the figure, when the main switch is turned on (S201), the surface temperature of the pressure / heating roller pair (laminating roller) 10 is detected by the pressure / heating roller temperature sensor 56.
And the temperature is compared with a preset temperature (S202). When the detected temperature is lower than the set temperature, the laminate heaters 13a and 13b are turned on (S203), and when the predetermined temperature is reached, the heater 13 is heated.
a and 13b turn off.

Next, the surface temperature of the preheat rollers 9a and 9b is detected by the preheat roller temperature sensor 55,
The temperature is compared with a preset temperature (S204). This set temperature is set according to the film thickness based on the information from the core bar identification switch 36. When the detected temperature does not reach the set temperature, the preheaters 12a and 12b are turned on (S205), and when the surface temperature reaches a predetermined temperature, the preheaters 12a and 12b are turned off. This completes the temperature adjustment of the preheat rollers 9a and 9b and the pressure / heating roller pair 10.

Next, it is determined whether or not there is an object (original) 20 to be laminated in the paper feed path 22 of the paper feed table 21.
The information of No. 7 is checked (S206). If there is no object to be laminated 20, the temperature is adjusted again. When there is an object to be laminated 20, a pressure / heating roller pair 1
Only the temperature control of 0 is performed (S207, S208).

Based on the information from the paper feed sensor 27, the rear end of the object to be laminated 20 is caught to judge whether or not the lamination is completed (S209). If the object to be laminated 20 exists, the temperature of the pressure / heating roller pair 10 is controlled (S2
07, S208). If it does not exist, the temperature of the pressure / heating roller pair 10 and the preheat rollers 9a and 9b is adjusted again (S202, S204).

Next, the thickness detecting means according to the second invention will be described with reference to FIG.

The surface temperature of the pressure / heating roller pair 10 is T _0.
Is controlled by. When the laminated films 6a and 6b are fed by a fixed sample length L, the laminated films 6a and 6b take heat from the pressure / heating roller pair 10,
The surface temperature of the pressure / heating roller pair 10 becomes T _2a with a temperature gradient as indicated by a in the figure. On the other hand, when a laminated film thicker than the above-described laminated films 6a and 6b is fed, the laminated film is fed by the length L of the sample, so that the temperature gradient shown by b in FIG. The surface temperature of the roller pair 10 is T _2b .

FIG. 11 shows a thickness detecting means utilizing this principle.
Follow along.

After the replacement of the laminated film is completed,
A reset button (not shown) arranged on the operation unit of the apparatus body 1 is pressed to enter the thickness detection mode (S101). After the reset, the surface temperature of the pressure / heating roller pair 10 is set to T ₀ (S102). When the control is completed, the surface temperature T ₁ of the pressure / heating roller pair 10 is detected (S103).
Immediately thereafter, the main motor 42 is turned on so as to convey the laminated film. The clock from the clock sensor 47 is counted, and when the laminated film is fed by the amount corresponding to the sample length L, the main motor 42 is turned on.
FF is performed (S104). The surface temperature T ₂ (T _2a or T _{2b in} FIG. 10) of the pressure / heating roller pair 10 immediately after the stop is detected (S105). (T ₁ −T ₂ ) is calculated, and this is compared with the film thickness discriminant constant T _S previously obtained by experiments (S106). If (T ₁ −T ₂ ) is smaller than T _S , it is determined that the film is thin, and pressure /
The set value T ₀ = T _B of the surface temperature of the heating roller pair 10 is set (S107). Next, when (T ₁ −T ₂ ) is larger than T _S , it is determined that the film is thick, and T
₀ = set to T _A (S108, where T _A > T
_B ). Thus, the thickness detection mode ends.

Here, when the thickness of the laminated film to be used is N types instead of thin type and thick type, the film thickness discriminating constant T _S may be set in advance by the experiment (N-1) types.

[0067] Further, the optimum roller surface temperature setting value corresponding to the thickness of the film (T _A, T _B) is determined by experiment.

When the above is completed, the normal laminating mode is entered.

Next, a concrete example using this means will be described with reference to FIG.

Laminate film 6 having a thickness of 32 μm
A and 6b are loaded and reset (S101). Pressurization·
The surface temperature of the heating roller pair 10 is controlled to T ₀ = 100 ° C. (S102), and the roller surface temperature T ₁ immediately before entering the film feeding mode is detected. When T ₁ = 100 ° C., laminate films 6a and 6b are sample length L = 200 mm
When sent (S104), the roller surface temperature becomes T ₂ = 95 ° C. (S105). In this case, a _{(T 1 -T 2) = 5} ℃. In addition, 100 μm laminated films 6a, 6
Similarly, when b is sent at T ₁ = 100 ° C. and L = 200 mm,
It becomes T ₂ = 85 ° C. At this time, (T ₁ −T ₂ ) = 15
℃. Therefore, the boundary temperature T _S between 32 μm and 100 μm is set to T _S = 10 ° C. Further, in the case of 32 μm, T _B = 120 ° C. was set from the experiment (S107), 10
In the case of 0 μm, T _A = 110 ° C. is set (S108),
The thickness detection mode ends (S109).

As described above, the laminated films 6a and 6b having the sample length L are passed through the pressure / heating roller pair 10, and the pressure / heating roller pair 10 before and after passing at this time.
The thickness of the laminated films 6a and 6b can be estimated by the temperature difference between the laminated films 6a and 6b. By controlling the temperature of the pressure / heating roller pair 10 based on this information, the laminated films 6a and 6b having different thicknesses can be obtained. The optimum heating temperature can be set even during use.

[0072]

As described above, according to the first aspect of the present invention, the peripheral speed of the rotary blade is set higher than the peripheral speed of the outer circumference of the pull roller, and further the peripheral speed of the outer circumference of the discharge roller is higher than the peripheral speed of the rotary blade. By increasing the peripheral speed of the downstream member, it is possible to apply an appropriate tension to the laminated film being cut,
It is possible to prevent the conveyance failure or damage of the object to be laminated due to the laminating film sagging and winding around another member, and it is possible to perform a good laminating process.

According to the second invention, the thickness of the laminated film is estimated from the temperature difference between the pressing / heating means which is changed by passing the laminated film having the sample length through the pressing / heating means prior to the laminating process. As a result, it is possible to automatically set the optimum heating temperature for the thickness without human intervention, and to provide a product excellent in aesthetic appearance and storability.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing the outline of a laminating apparatus according to the present invention.

FIG. 2 is an operation explanatory view showing loading of a laminated film.

3 (a) and 3 (b) are operation explanatory views of a core metal identification switch for detecting the thickness of a laminated film.

FIG. 4 is an operation explanatory diagram of a static elimination needle for removing static electricity.

FIG. 5 is a plan view showing a drive system of a pull roller.

FIG. 6 is a plan view showing a drive system of the cutter unit.

FIG. 7 is a plan view showing a drive system of a discharge roller.

FIG. 8 is a block diagram of a control device.

FIG. 9 is a flowchart of a laminating process.

FIG. 10 is a diagram showing a relationship between a thickness of a laminated film and a temperature difference.

FIG. 11 is a flowchart of temperature adjustment.

FIG. 12 is a longitudinal sectional view showing the outline of a conventional laminated film.

FIG. 13 is an explanatory perspective view showing a configuration of a cutter lower blade (rotary blade).

FIG. 14 is an operation explanatory view of a cutter lower blade.

FIG. 15 is a flowchart of a conventional laminating apparatus.

[Explanation of symbols]

6a, 6b Laminated film 10 Pressurizing / heating roller (pressurizing / heating means) 15 Pull roller (conveying rotator) 17 Cutter unit (cutting device) 17b Cutter lower blade (rotating blade) 19 Ejecting roller (carrying rotator) 20 Laminate Object 56 Pressure / heating roller temperature sensor (temperature detection means) 70 Thickness detection means (control device) L Sample length

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Reference number within the agency FI technical display location // B29L 9:00 4F (72) Inventor Kazuhiro Matsuo 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (3)

[Claims] 1. A pressurizing / heating means for hermetically sealing a sheet-shaped laminating object sandwiched by heat-reactive upper and lower laminating films, and the hermetically-sealed laminating object via the laminating film. In a laminating apparatus provided with a conveying rotator for conveying the laminating object, a cutting device for cutting the laminated film that seals the object to be laminated, and a discharging rotating body for discharging the laminated film after cutting, the cutting device is the laminate A control device that has a rotary blade that is formed long in the width direction of the film and that rotates in the same direction as the transport rotary body and the discharge rotary body, and that controls the rotation of the rotary blade, The peripheral speed, the peripheral speed of the rotary blade, and the peripheral speed of the outer circumference of the discharge rotating body are set by sequentially increasing the peripheral speed in this order. Laminating apparatus, characterized in that. 2. A pressurizing / heating means for hermetically treating a sheet-shaped object to be laminated sandwiched by heat-reactive upper and lower laminating films, and the laminating film having a sample length is the pressurizing / heating means. A temperature detecting means for detecting a temperature difference of the pressurizing / heating means that changes by passing through the sheet, and a thickness detecting means for determining a thickness of the laminate film according to a magnitude of the temperature difference; A laminating apparatus comprising: a control device that controls the temperature of the pressurizing / heating means based on the thickness information output by the detecting means. 3. The laminating apparatus according to claim 2, wherein the temperature difference between the pressurizing / heating means is detected by the temperature detecting means when the laminating film is loaded.