JP3058707B2 - Laminating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminating apparatus for hermetically sealing an object to be laminated by sandwiching the object to be laminated between heat-reactive upper and lower laminated films and applying heat and pressure.

[0002]

2. Description of the Related Art Heretofore, there has been well known a laminating apparatus which wraps the front and back of a sheet-like laminating object with a laminating film and performs laminating treatment to enhance the aesthetics and preservability of the laminating object.

FIG. 11 shows an example of such a laminating apparatus.
In the figure, reference numeral 100a denotes a heat-reactive upper laminate film, and 100b denotes a lower laminate film, which are wound in rolls, respectively, and constitute an upper sheet roll 101a and a lower sheet roll 101b. . The laminated films 100a, 100
b is wound around the laminating rollers 102a and 102b, respectively, and the pull rollers 103a and 103
The tension is given by 03b. And
Laminating heaters 104a and 104b are housed in the center of the laminating rollers 102a and 102b, respectively, and heat the laminating rollers 102a and 102b. Further, a cutter unit 105 for cutting the rear end of the lamination target 107 after lamination is disposed downstream of the pull rollers 103a and 103b.

On the near side (right side in FIG. 1) of the apparatus main body, a sheet feeding table 106 on which an unprocessed lamination target 107 is set.
Is formed, and the object to be laminated 107 is arranged along the sheet feeding table 106 so that the upper laminated film 100 is formed.
a and the lower laminate film 100b are inserted into the junction of the laminating rollers 102a and 102b where the lower lamination film 100b merges. An operation unit is provided on the laminating apparatus. The operation unit includes laminating rollers 102a and 102a.
Switches 108 and 109 for manually setting the transfer speed of the laminate films 100a and 100b by the b and pull rollers 103a and 103b and the outer peripheral temperature of the laminate rollers 102a and 102b, respectively, are provided.

That is, by supplying the object to be laminated 107 between the laminating rollers 102a and 102b, the object to be laminated 107 is sandwiched between the upper and lower laminating films 100a and 100b so as to be wrapped around the laminating roller 102a. , 102b, the laminated films 100a, 100b protruding from the outer peripheral edge of the object to be laminated 107 are adhered to each other.
The sealing process is performed at 02a and 102b, and thereafter, it is cut into a predetermined length to complete the product.

In such a laminating apparatus, the quality of the product is determined by the laminating heater 10 as a heating means.
The temperature is largely controlled by temperature control of 4a and 104b, that is, temperature management.

[0007]

However, according to the prior art, the temperature control of the laminating heaters 104a and 104b has been performed independently of a series of operations of the laminating process, for example, the operation of the object to be laminated. 104a and 104b indicate that when the temperature is lower than a certain target value, the temperature is always in a heating state and the temperature rise becomes abnormal, which has an adverse effect on the elongation of the laminated films 100a and 100b, and the product when the next laminating process is performed. Had a very bad job. Further, there is a problem that the service life of the apparatus such as the laminating rollers 102a and 102b is significantly impaired due to the abnormal temperature rise.

Accordingly, the present invention is to provide a laminating apparatus capable of improving the aesthetics of a product and extending the life of the apparatus by controlling the temperature so as to follow the laminating operation. Aim.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has an object to be laminated sandwiched between upper and lower thermally responsive laminate films, transported, and heated via heating means. In a laminating apparatus that seals an object to be laminated by pressurizing and heating the laminate film, a temperature detecting unit that detects a temperature of the heating unit, and a front end and a rear end that detect a front end and a rear end of the laminating object. An end detection unit, and a control unit that controls the temperature of the heating unit based on an output signal of the temperature detection unit and an output signal of the front end and rear end detection units.

The control means includes timer means for measuring the time in response to the output signal of the front end and rear end detection means,
The heating means can be controlled according to the output of the timer means.

Further, the control means turns on the heating means by the output signal of the rear end detection of the front and rear end detection means.
In addition to the FF, the timer means may start timing.

In addition, in response to the output signal of the leading end detection of the leading end trailing end detecting means, the control means sets the heating means to O.
N is also possible.

[0013]

Based on the above construction, the control means controls the temperature of the heating means by an output signal outputted by the leading and trailing end detecting means detecting the leading and trailing end of the object to be laminated, that is, the operation of the actual laminating process. In addition, since the temperature of the heating means can be controlled and managed immediately, it is possible to prevent the heating means from being unnecessarily heated and abnormally rising in temperature.

When the control means has a timer means, the temperature of the heating means can be finely controlled by appropriately setting the operation time of the timer means.

[0015]

[0016]

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

First, the configuration of the entire laminating apparatus 1 will be described with reference to FIG.

Reference numeral 95 denotes a paper feed table. On the paper feed table 95,
A front-end / rear-end detection sensor 13 as a front-end / rear-end detection means for detecting the lamination target 10 is provided at the back side of the insertion port 95a. Immediately after that, a shutter 12 which abuts the lamination target 10 and serves as a reference. It is arranged. When a shutter solenoid (not shown) is turned on, the shutter 12 retreats downward from the sheet supply table 95, and
a and 30b communicate with the paper feed table 95.

Reference numeral 11 denotes a pick-up roller, which is retracted to a position at a predetermined height on the paper feed table 95 during standby.
The pickup roller 11 drives a pickup solenoid (not shown) so that the object 10 to be laminated is
And is rotated by a pickup motor (not shown).

27a and 27b are laminated films 28
a and 28b are wound in a roll shape, and one sheet roll is provided on each of the upper side and the lower side.
Reference numerals 23, 24, and 25 denote tensioner shafts, which are provided on the preheat rollers 21a and 21b, respectively.
28b is in contact with a certain length, and the preheat roller 2
The laminating films 28a and 28b are sagged between 1a and 21b and the sheet rolls 27a and 27b to prevent the laminated films 28a and 28b from adhering to each other.

Reference numerals 21a and 21b denote preheat rollers, in which preheaters H1 and H2 are accommodated as heating means. The preheat rollers 21a, 21
The heat radiation amount b is configured to be variably set by providing a sensor on the surface of the preheat rollers 21a and 21b.

Reference numerals 30a and 30b denote laminating rollers in which laminating heaters H3 and H as heating means are provided.
4, the object 10 to be laminated is hermetically sealed between the laminated films 28a and 28b heated by these components. A cutter unit 33 includes a cutter blade 34, a die 35, and a cutter motor (not shown), and cuts the rear end of the laminated object 10 to be laminated.

Reference numerals 36a and 36b denote pull rollers. These pull rollers 36a and 36b
A predetermined load is applied to each of the sheets a and 27b in the sheet pull-out direction to pull the laminate films 28a and 28b, whereby the pull rollers 36a and 30b and the pre-heat rollers 21a and 21b are used.
A proper tension is applied to the laminate films 28a and 28b between the sheet rolls 27a and 36b and the sheet rolls 27a and 27b.

Reference numerals 37a and 37b denote discharge rollers, which discharge the laminating object 10 which has been laminated and cut to a predetermined length, to the outside of the laminating apparatus 1.

Next, the configuration of the sheet rolls 27a and 27b will be described in detail with reference to FIG. The upper sheet roll 27a is wound around a core 44a, and the core 44a rotates around the roll shaft 47. The roll shaft 47 is connected to the side plate 48 of the laminating apparatus 1.
Is supported via a tension adjusting nut 49. A tension spring 50 is interposed between the tension adjusting nut 49 and the cored bar 44, and the tension adjusting nut 49 tightens the sheet from the sheet roll 27a. The load at the time of drawing out the laminate film 28a can be adjusted.

Here, the sheet roll 27a is composed of a laminate film 28a having a first thickness, and the laminate film 28a is wound around a first metal core 44a (FIG. 2 (a)). The lower sheet roll 27b is made of a laminate film 28b having a second thickness, and the laminate film 28b is
4b (FIG. 2 (b)). And the first metal core 4
Although the end of 4a is formed straight, a flange-shaped projection 45 is formed at the end of the second metal core 44b. A micro switch 46, which is a core metal identification switch, is fixed to the side plate 48.
Reference numeral 6 denotes an OFF state when the first core bar 44a is mounted, while the projection 45 of the core bar 44b presses the lever 46a when the second core bar 44b is mounted, thereby turning ON. State.

Next, the structure of the drive system will be described with reference to FIG.

In FIG. 1, reference numeral 51 denotes a main motor, and a main motor gear 52 is fixed to one end of an output shaft 51a of the main motor 51. And the main motor 5
The rotation of No. 1 is transmitted from the motor gear 52 to the pull roller gear 53, and the pull roller 36b is driven to rotate.

At the other end of the output shaft 51a of the main motor 51, a clock disk 67 having a plurality of slits 67a arranged on the circumference at equal intervals is fixed. Is provided with a clock sensor 68 composed of a transmission type optical sensor for detecting the slit 67a.

Next, the operation in the case of laminating the object to be laminated 10 according to the present invention will be described with reference to FIG.

The object to be laminated 10 is placed on the document table 95, inserted into the insertion slot 95 a, and hits the shutter 12. When the leading end of the object to be laminated 10 is detected by the leading end and trailing end detection sensor 13 disposed immediately before the shutter 12, the shutter solenoid is turned on, and the shutter 12 retreats from the sheet supply table 95, thereby causing the laminating roller 30a to move. , 30b communicate with the paper feed table 95. The pickup solenoid is turned on, and the pickup roller 11 presses the object to be laminated 10 at a constant pressure. Subsequently, the pickup motor is turned on, and the pickup roller 11 starts rotating.

The object 10 to be laminated is conveyed by the pickup roller 11, and when a preset time has elapsed, the main motor 51 is turned on and the pull rollers 36a, 3
6b starts rotating. Continuous laminated film 28
a and 28b are pulled by the pull rollers 36a and 36b, and thereby the laminating rollers 30a and 30b are pulled.
b, Preheat rollers 21a and 21b are driven. The laminating films 28a and 28b before the processing are subjected to the first heating by preheated rollers 21a and 21b.
And then the laminating rollers 30a, 3
Ob is heated to a second temperature controlled to a substantially constant temperature.

The object 10 to be laminated is sent to the nip portion of the laminating rollers 30a and 30b by the pickup roller 11, and is sandwiched between the heated upper and lower laminating films 28a and 28b. It is sealed and laminated by heating.

After the pickup roller 11 is pressurized and rotated for a preset time, the pickup solenoid is turned off, retreats from the original table 95, and stops rotating when the pickup motor is turned off.

When the leading end trailing end detecting sensor 13 detects the trailing end of the object 10 to be laminated, the clock sensor 68 starts counting the number of slits of the clock disk 67. After the distance from the leading end trailing end detection sensor 13 to the cutter unit 33 is measured, the main motor 51 is turned off.
Then, the transfer of the lamination target 10 after the lamination process is stopped. At the same time, the cutter motor is turned on, and the continuous
The portion sandwiching the object to be laminated 10 is cut from the sheets a and 28b, and this is discharged and stacked as a product on a discharge tray (not shown).

By repeating the above series of operations,
A plurality of lamination objects 10 are sequentially laminated.

Next, the configuration of the control system will be described with reference to the control block diagram shown in FIG.

The heaters H1, H2, H3, H3 are detected by temperature detecting means comprising thermistors T1, T2, T3, T4.
4 is measured, and the signal is fed back to the control means 70, so that the heaters H1 to H
4 is performed.

When the object 10 to be laminated is detected by the leading end trailing end detecting sensor 13 as the leading end trailing end detecting means composed of an interrupter, the control means 70 receiving the signal switches the control temperature. .

When the power is turned on, the control means 70 displays on the display means 71 via a light emitting diode (LED) or the like. In addition, a display such as “waiting for work” or “completed” may be displayed.

Next, the configuration of the control circuit will be described with reference to FIG. 72 is a central processing unit (CPU),
A read-only memory (ROM) 73 stores a control program, and a random access memory (RAM) 74 stores input data (data obtained by signals).

The inlet port 75 is connected to a front-end and rear-end detection circuit 76, and the outlet port 77 is connected to heaters H1 to H1.
4 and a load such as the display circuit 78 are connected. Also,
The A / D conversion input unit 79 is connected to a heater temperature detection circuit 80. The heater temperature detection circuit 80 converts the temperature of the heaters H1 to H4 input as a continuous voltage change signal into a digital signal.
To enter. Reference numeral 81 denotes timer means.

Thus, upon receiving the signals from the entrance port 75 and the A / D conversion input section 79, the RAM 74 stores the data as input data.
According to the control program stored in the output port 77
, Necessary instructions are given to the heaters H1 to H4 and the display circuit 78.

Next, the laminating operation of this embodiment will be described in detail with reference to the flowcharts shown in FIGS.

The flowchart of FIG. 6 shows an outline of the whole. The laminating apparatus 1 is initialized by the initial control in step S100, and the sequence enters a preheating control sequence (step S300). .
At this time, if the leading end of the lamination target 10 is not detected by the leading end detection (step S500), the process returns to the preheating control sequence. On the other hand, when the leading end is detected, the control enters a lamination control sequence (step S700) to perform temperature adjustment control.

FIG. 7 shows a preheating control sequence (step S3).
00) is a flowchart. In step S301, it is determined whether the temperature of the laminating rollers 30a, 30b or the temperature of the pre-heat rollers 21a, 21b is lower.
The lower temperature heater is turned on to raise the temperature to the preheating temperature. Steps S301 through S
Indicated by 307.

FIG. 8 is a flowchart of the lamination control sequence (step S700) during the lamination process. In step S500, the object to be laminated 10
It is determined whether or not the leading end of the object to be laminated is detected. If not, the process returns to the preheating control sequence (step S300). Turn ON. At the same time, the heat timer 8 as a timer means
1 is operated to measure time (step S702). Here, before the time of the heat timer 81 has expired, the lamination target 1 is detected by the front / rear end detection sensor 13.
If the trailing end of 0 is detected, the process proceeds to step S710, where the laminating heaters H3 and H4 are turned off, and the heat timer is cleared (step S711). However, if the rear end of the object to be laminated 10 is not detected until the time is up, the laminating heaters H3, H
4 is turned off (Step S705), and Step S70
Then, the process proceeds to step S6, where the laminating heaters H3 and H4 are turned on if the target temperature is not reached.
07). Then, proceeding to step S708, if the rear end of the object to be laminated 10 is detected, the laminating heater H
3, H4 is turned off, the heat timer is cleared in step S720, and the preheating control sequence (step S30
Return to 0).

Here, the heat timer in step S702 is set to 10 seconds, but this set time can be set arbitrarily according to conditions such as the material and thickness of the laminate films 28a and 28b. Good.

FIG. 9 shows a flowchart of another embodiment. In the above-described embodiment, the process immediately returns to the preheating control sequence immediately after the detection of the rear end of the lamination target 10. However, in the present embodiment, the heat timer 81 is interposed to minimize the temperature rise after the lamination process. I have to.

After the front end of the lamination target 10 in FIG. 9 is detected, the timer by the heat timer 81 is started. If the rear end of the lamination target 10 is detected during the timing, the lamination heaters H3 and H4 are turned off. The process is the same as in the previous embodiment up to the point where the heat timer 81 is cleared, but after that, the heat timer 81 is counted as 20 seconds (step S906). During this time, if the leading end of the object to be laminated 10 is detected, the process proceeds to step S960.
H4 is kept turned off, and after the time is up, the process returns to the preheating control sequence. By doing this,
The temperature rise of the laminating rollers 30a and 30b after the laminating process can be minimized. However, the set time of the heat timer is not particularly limited to 20 seconds shown in the flowchart.

FIG. 10 shows a flowchart of still another embodiment. In each of the above-described two embodiments, after detecting the leading end of the lamination object 10, the heat timer 81 is clocked to forcibly turn on the lamination heaters H3 and H4, and then turned off after the time-up, and then to the temperature control of the target value. After entering, the temperature rise after the detection of the rear end of the object 10 to be laminated is minimized. In contrast, FIG.
0 indicates that after detecting the leading end of the object to be laminated 10, the heat timer 81 is timed, and the laminating heaters H3 and H
4 is forcibly turned on, and lamination target 1
When the trailing end of 0 is not detected, the temperature adjustment control is started (step S1007). When the temperature is lower than the target value, the lamination heaters H3 and H4 are turned on (step S100).
8) If it is higher than that, it is off. afterwards,
If the rear end of the lamination target 10 is detected, the lamination heaters H3 and H4 are turned off once (step S101).
0) and the heat timer 81 is cleared in step S1012, and the heat timer 81 is counted for 20 seconds. If the leading end of the laminating object 10 is detected during this time, the process proceeds to step S1001, and the same processing as in the above-described two embodiments is performed. H4 OFF
Then, after the time is up, the process returns to the preheating control sequence.

[0052]

As described above, unnecessary heating of the heating means can be prevented by detecting the leading and trailing edges of the object to be laminated during the laminating process and reflecting this data on the temperature control of the heating means. Therefore, it is possible to improve the durability and reliability of each component by preventing abnormal heating of the heating means, and to improve the appearance of the object to be laminated after lamination.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a laminating apparatus according to the present invention.

FIGS. 2A and 2B are partial cross-sectional views of a sheet roll.

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

FIG. 4 is a block diagram of temperature control.

FIG. 5 is a control circuit block diagram of temperature control.

FIG. 6 is a flowchart of the embodiment.

FIG. 7 is a flowchart of the embodiment.

FIG. 8 is a flowchart of the embodiment.

FIG. 9 is a flowchart of another embodiment.

FIG. 10 is a flowchart of another embodiment.

FIG. 11 is a longitudinal sectional view of a conventional laminating apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Laminating apparatus 10 Lamination target 13 Front-end rear-end detection means (front-end rear-end detection sensor) 28a, 28b Laminated film 70 Control unit 81 Timer means H1, H2, H3, H4 Heating means (preheater,
Laminate heater) T1, T2, T3, T4 Temperature detecting means (thermistor)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-37924 (JP, A) Japanese Utility Model Application 2-146027 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B29C 63/00-63/48 B29C 65/00-65/82 B32B 1/00-35/00

Claims (4)

(57) [Claims] 1. A laminating apparatus for hermetically sealing an object to be laminated by sandwiching and conveying the object to be laminated between upper and lower thermally responsive laminate films, and pressurizing and heating the laminated film via a heating means. Temperature detecting means for detecting the temperature of the heating means; front and rear end detecting means for detecting the front and rear ends of the object to be laminated; an output signal of the temperature detecting means and an output of the front and rear end detecting means Control means for controlling the temperature of the heating means in response to a signal. 2. The apparatus according to claim 1, wherein said control means includes timer means for measuring a time in accordance with an output signal of said front and rear end detecting means, and controls said heating means in accordance with an output of said timer means. The laminating apparatus according to claim 1, wherein 3. The control means turns off the heating means and the timer means starts counting time in response to an output signal of the rear end detection of the front and rear end detection means. Laminating equipment. 4. The laminating apparatus according to claim 3, wherein the control unit turns on the heating unit in response to an output signal of the front end detection of the front end rear detection unit.