JP2010005939A - Laminator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laminator which can effectively eliminate such a trouble wherein a laminated film and tissue loaded in a case are deeply entangled around a heated contact-bonding roller and consequently, cannot be discharged from the case. <P>SOLUTION: When an intermediate sensor S2 has failed to detect the tissue after a prescribed first set time following the detection of the tissue P inserted in the laminated film F by an upstream side sensor S1, a control means C controls a drive means M to reversely rotate the heated contact-bonding roller 16. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a laminator for thermocompression bonding of a laminated thermoplastic laminate film and a paper sheet.

The laminator of Patent Document 1 is provided with a heating roller and a feed roller (pressure roller) that are rotated by the rotational driving force of a motor inside a case having an inlet opening and an outlet opening. Are provided with a drawing side detection sensor and a drawing side detection sensor, respectively.
The laminated thermoplastic laminate film and paper sheet inserted into the case through the inlet opening are fed downstream while being heated and pressed by a heating roller. And it is sent to the exit opening side by the feed roller located on the downstream side of the heating roller, and is discharged out of the case from the exit opening.
In addition, if the drawer-side sensor does not detect the laminate film after a certain set time has elapsed after the draw-side sensor detects the laminate film, the control board built in the laminator will send the laminate film to the heating roller or feed. It is determined that the roller is entangled (wound), and the motor is rotated reversely, and the laminate film and the paper sheet are discharged from the entrance opening to the outside of the case.
JP 2003-334859 A

  However, since the distance between the pull-in side sensor and the pull-out side sensor is long, the setting time in the laminator of the cited document 1 is inevitably long. Therefore, if the laminate film and paper sheet are entangled with the upstream heating roller, the laminate film and paper sheet are already deeply entangled with the heating roller even if the control board built in the laminator reverses the motor. There is a great risk. Therefore, even if the heating roller is reversed by the motor, the laminated film and the paper sheet may not be discharged from the entrance opening to the outside of the case.

  An object of the present invention is to provide a laminator that can effectively prevent a laminate film and a paper sheet inserted into a case from being entangled deeply with a thermocompression-bonding roller and being unable to be discharged from the case.

  In the laminator of the present invention, when the laminate film and the paper sheet are entangled with the roller disposed in the case of the laminator, most of them are entangled with the upstream heating roller instead of the downstream feeding roller. And a case having an inlet opening for inserting a thermoplastic laminate film and a paper sheet stacked on top of each other and an outlet opening for discharging, and a heating device provided in the case. And at least a pair of thermocompression rollers sandwiching the laminate film and the paper sheet and thermocompression bonding, and moving the laminate film and the paper body disposed at least downstream of the thermocompression roller in the case. A feed roller, a heating and pressure-bonding roller, a driving means for rotationally driving the feed roller, and the case An upstream sensor for detecting the position of the paper sheet provided between the most upstream roller and the inlet opening, the thermocompression roller, and the feed roller located downstream of the thermocompression roller. And an intermediate sensor that detects the position of the paper sheet, and the intermediate sensor detects the paper sheet after a predetermined first set time after the upstream sensor detects the paper sheet. When not detected, it comprises control means for controlling the driving means to reversely rotate the heat-pressing roller and the feed roller on the upstream side of the heat-pressing roller.

  A downstream sensor for detecting a position of the paper sheet provided between the roller located on the most downstream side in the case and the outlet opening; and the control means includes: the upstream sensor When the downstream sensor does not detect the paper sheet after a second set time longer than the first set time after detecting the above, all the feed rollers and the thermocompression-bonding rollers are controlled by controlling the drive means. Is preferably reversed.

  According to the laminator of the present invention, the control means controls the drive means when the intermediate sensor does not detect the paper sheet after a predetermined first set time has elapsed since the upstream sensor detected the paper sheet. Thus, the thermocompression roller and the feed roller upstream of the thermocompression roller are reversed. Since the distance from the upstream sensor to the intermediate sensor is shorter than the distance from the upstream sensor (inlet opening) to the outlet opening, the set time is also shortened. For this reason, the laminating film and the paper sheet are reversed from the entrance opening to the outside of the case since the laminating film and the paper sheet are reversed (shallow) slightly with the thermocompression roller. Can be discharged.

According to the second aspect of the present invention, when the downstream sensor does not detect the paper sheet after the second set time has elapsed since the upstream sensor detected the paper sheet, all the feed rollers Therefore, when the laminate film and the paper sheet are entangled with the feed roller provided on the downstream side of the thermocompression roller, the laminate film and the paper sheet can be discharged from the entrance opening to the outside of the case.
The laminate film and the paper sheet do not often get entangled with the feed roller located downstream after passing through the thermocompression-bonding roller safely, but according to the invention of this claim, it is possible to cope with such a case. All tangled troubles can be solved.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
The laminator 10 of the present embodiment is a desk-top type for office use, and a paper sheet P and a laminate film F are placed on the front surface of the case 11 (the left side in FIG. 1 is “front” and the right side is “rear”). An inlet opening 12 for insertion is provided, and an outlet opening 13 facing the inlet opening 12 in the front-rear direction is formed on the rear surface of the case 11.
The front part (upstream side) of the case 11 is provided with a pair of upper and lower thermocompression-bonding rollers 16 that can rotate around a rotation shaft 15 extending in the left-right direction (the direction orthogonal to the paper surface in FIG. 1). On the downstream side, a pair of upper and lower feed rollers 19 is provided that can rotate around a rotation shaft 18 extending in the left-right direction. As shown in the figure, the upper and lower heat pressing rollers 16 and the upper and lower feed rollers 19 are in contact with each other on a straight line connecting the inlet opening 12 and the outlet opening 13. The thermocompression roller 16 and the feed roller 19 are connected to a motor (driving means) M built in the case 11 through a power transmission mechanism (not shown), and the motor M receives power from a power source (not shown). All the thermocompression-bonding rollers 16 and the feed rollers 19 rotate while synchronizing with the same rotation speed and rotation direction.
As shown in FIG. 1, a pair of upper and lower heating devices 20 are disposed around the upper and lower heat pressing rollers 16. The heating device 20 includes an arc portion 21 positioned around the thermocompression roller 16, a guide portion 22 extending from the rear end of the arc portion 21, and a horizontal guide portion extending substantially horizontally from the rear end of the guide portion 22 to the rear. 23, and between the upper and lower horizontal guide portions 23 is a passage for the paper sheet P and the laminate film F. The heating device 20 does not operate (not heated) when the main switch SW provided in the case 11 is OFF. When the main switch SW is turned ON, the heating device 20 is heated by the electric power from the power source, and the upper and lower heat pressing rollers 16 are moved. Heat.
On the other hand, immediately after the upper and lower feed rollers 19, a horizontal guide portion 26 extending forward from the upper and lower edges of the outlet opening 13, and extending from the front end of the horizontal guide portion 26 in substantially the same direction as the guide portion 22. A guide member 25 including a guide portion 27 is disposed.

As shown in FIGS. 1 and 4, an upstream sensor S <b> 1 positioned below a straight line connecting the inlet opening 12 and the outlet opening 13 is provided between the inlet opening 12 and the thermocompression roller 16. The upstream sensor S1 includes a light emitting part and a light receiving part. When light emitted upward from the light emitting part is reflected by the paper sheet P, the light receiving part receives and receives the reflected light. Thus, it is detected that the paper sheet P is located immediately above.
Further, immediately after the thermocompression-bonding roller 16, an intermediate sensor S2 is provided that is positioned below a straight line connecting the inlet opening 12 and the outlet opening 13. This intermediate sensor S2 has the same structure as the upstream sensor S1, and has the same function as the upstream sensor S1.
Further, a downstream sensor S3 is provided between the feed roller 19 and the outlet opening 13 and is located below a straight line connecting the inlet opening 12 and the outlet opening 13. This downstream sensor S3 also has the same structure as the upstream sensor S1, and has the same function as the upstream sensor S1.
The upstream sensor S1, the intermediate sensor S2, and the downstream sensor S3 are electrically connected to a control circuit (control means) C that is electrically connected to the motor M built in the case 11, and the main switch SW is When it is OFF, it does not operate (no light is emitted), and when the main switch SW is turned ON, light is emitted by the power from the power source.

Then, the point which heat-presses the paper sheet P and the laminate film F using the laminator 10 of the above structure is demonstrated.
As shown in FIG. 2, a laminate film F made of a thermoplastic transparent material that produces adhesiveness when heated has a V-shape in a side view when the intermediate portion (front end portion) is bent. On the other hand, the paper sheet P has a rectangular shape slightly smaller than the laminate film F in plan view. The longitudinal length of the laminate film F and the paper sheet P is longer than the longitudinal distance between the upstream sensor S1 and the downstream sensor S3.
First, by turning on the main switch SW (step 1), light is emitted from the light emitting portions of the upstream sensor S1, the intermediate sensor S2, and the downstream sensor S3, and the heating device 20 is heated (step). 2). Then, after waiting until the upper and lower thermocompression-bonding rollers 16 are sufficiently heated by the heating device 20 (arc portion 21), the paper sheet P is inserted (stacked) into the gap between the upper part and the lower part of the laminate film F. An object is inserted into the case 11 through the inlet opening 12.
When the upstream sensor S1 detects that the front end of the paper sheet P is located immediately above the upstream sensor S1 (step 3), the control circuit C rotates the motor M forward (step 4). Then, the thermocompression-bonding roller 16 and the rotating shaft 18 rotate in synchronization with the direction of the arrow in FIG. The upper and lower peripheral edges of the laminate film F are bonded to each other by the pressing force from the heat pressing roller 16.
Since the laminate film F and the paper sheet P that have passed through the upper and lower heat pressing rollers 16 pass between the upper and lower guiding portions 22 by the rotational force of the heat pressing roller 16, they enter between the upper and lower horizontal guide portions 23 (upstream The intermediate sensor S2 detects the front edge of the paper sheet P passing immediately above (before the predetermined first set time has elapsed after the side sensor S1 detects the front edge of the paper sheet P) (step 5). . The laminate film F and the paper sheet P that have passed between the upper and lower horizontal guide portions 23 pass between the rear ends of the horizontal guide portions 23 and are inserted between the upper and lower feed rollers 19. Then, the laminate film F and the paper sheet P are pressure-bonded by the upper and lower feed rollers 19 and receive the rotational force of the upper and lower feed rollers 19 so that the gap between the upper and lower guide members 25 (the guiding portion 27 and the horizontal guide portion 26). , And when passing between the upper and lower horizontal guide portions 26 (before a predetermined second set time has elapsed after the upstream sensor S1 detects the front edge of the sheet P), the downstream sensor S3 is directly above. The front end of the passing sheet P is detected (step 6). Then, the finished laminate PF in which the paper sheet P is covered with the laminate film F passes between the upper and lower guide portions 27 and the horizontal guide portion 26 and is discharged from the outlet opening 13 to the rear of the case 11.

The above explanation of the operation is for the case where the laminate film F and the paper sheet P smoothly pass through the inside of the laminator 10. Next, the laminate film F and the paper sheet P are entangled with the roller inside the case 11. A description will be given of the operation in the case where the error occurs.
The laminating film F and the paper sheet P inserted into the case 11 from the entrance opening 12 pass immediately above the upstream sensor S1, whereby the thermocompression roller 16 and the feed roller 19 rotate in the direction of the arrow in FIG. When the film F and the paper sheet P are fed rearward by the upper and lower heat pressing rollers 16, in most cases, the front end of the laminate film F is guided to the horizontal guide portion 23 side by either the upper or lower guide portion 22. However, rarely, the front end of the laminate film F moves between the upper arc portion 21 and the upper thermocompression roller 16 or between the lower arc portion 21 and the lower thermocompression roller 16 so that the laminate film F moves up and down. It may get tangled on the surface of any one of the heat pressing rollers 16.
In this case, the intermediate sensor S2 does not detect the front edge of the paper sheet P even after a predetermined first set time has elapsed after the upstream sensor S1 detects the front edge of the paper sheet P. Controls the motor M to reversely rotate the thermocompression roller 16 and the rotary shaft 18 for a predetermined time (step 7, see FIG. 4). Since the first set time is set as a short time, the entangled state of the laminate film F with respect to the heat press roller 16 is shallow when the first set time has passed (for example, only the front end portion of the laminate film F is entangled). Becomes). Therefore, if the thermocompression roller 16 and the rotating shaft 18 are reversed at this stage, the laminate film F and the paper sheet P can be discharged from the entrance opening 12 to the outside of the case 11.
Then, when the thermocompression roller 16 and the feed roller 19 stop after being reversed for a predetermined time, the control circuit C determines whether or not the upstream sensor S1 detects the paper sheet P (step 8). When the upstream sensor S1 does not detect the paper sheet P, it is determined that the laminate film F and the paper sheet P are discharged from the entrance opening 12 to the outside of the case 11 by the reverse operation, and the control circuit C M is rotated forward again (step 9). On the other hand, if the upstream sensor S1 detects the paper sheet P in step 8, it is determined that the laminate film F and the paper sheet P are not yet discharged from the case 11 by the reverse operation. The control circuit C keeps the motor M stopped (not sending a normal rotation signal).

Further, after the laminate film F and the paper sheet P inserted into the case 11 from the entrance opening 12 pass between the upper and lower heating press rollers 16 and the upper and lower heating devices 20 (the guiding portion 22 and the horizontal guiding portion 23). In some cases, the front end of the laminate film F may be entangled with the surface of the upper or lower feed roller 19.
In this case, even if a predetermined second set time (longer than the first set time) elapses after the upstream sensor S1 detects the front edge of the paper sheet P, the downstream sensor S3 detects the front edge of the paper sheet P. Since it is not detected, the control circuit C controls the motor M in Step 6 to reversely rotate the thermocompression roller 16 and the rotating shaft 18 for a predetermined time (Step 7, see FIG. 4). Even if the laminate film F is entangled with the upper or lower surface of the feed roller 19, the second set time does not cause the laminate film F to get deeply entangled with the feed roller 19 (for example, the laminate film F It is set as a time such that only the front end portion is entangled. Therefore, if the thermocompression roller 16 and the feed roller 19 are reversed at this stage, the laminate film F and the paper sheet P can be discharged from the entrance opening 12 to the outside of the case 11. The subsequent operation is the same as when the laminate film F is entangled with the surface of the heat press roller 16 (steps 8 and 9).

As described above, the laminator 10 of the present embodiment reverses the thermocompression roller 16 (and the feed roller 19) based on the detection result of the intermediate sensor S2 that is closer to the upstream sensor S1 than the downstream sensor S3. Therefore, the first set time can be set as a time shorter than the second set time. Therefore, even when the entanglement with respect to the heat pressing roller 16 occupying most of the entanglement troubles with respect to the roller of the laminate film F and the paper sheet P occurs, before the laminate film F is entangled with the heat pressing roller 16 deeply, the laminate film F In addition, the paper sheet P can be discharged from the entrance opening 12 to the outside of the case 11.
In addition, it is detected using the downstream sensor S3 that the laminate film F and the paper sheet P that have passed through the thermocompression roller 16 can be entangled with the feed roller 19, and the thermocompression roller 16 and the feed roller 19 are detected. Is reversed to discharge the laminate film F and the paper sheet P from the inlet opening 12 to the outside of the case 11. Thus, since not only the entanglement trouble with respect to the heat press roller 16 but also the entanglement trouble with respect to the feed roller 19 can be dealt with, almost all the entanglement problems can be solved.

In addition, this invention can be implemented in another aspect.
For example, a pair of upper and lower feed rollers 19 (rotating shafts 18) are disposed between the inlet opening 12 and the thermocompression roller 16 as in a laminator 10 ′ shown in FIG. It may be rotated while being synchronized (in the same speed and in the same direction) as the thermocompression roller 16 and the downstream feed roller 19.
Moreover, you may implement as two pairs of thermocompression-bonding rollers 16 like the laminator 10 '' shown in FIG. In this modification, the intermediate sensor S2A is disposed immediately after the upstream side heat press roller 16, and the intermediate sensor S2B is disposed immediately after the downstream side heat contact roller 16 (the structure of the intermediate sensor S2A and the intermediate sensor S2B and The function is the same as that of the intermediate sensor S2, and these are connected to the control circuit C), and the laminate film F and the paper sheet P are entangled with either the upstream side heat pressure roller 16 or the downstream side heat pressure roller 16. It is possible to respond to the case. Note that the number of pairs of the thermocompression rollers 16 may be three or more, or the intermediate sensor may be provided only immediately after the thermocompression roller 16 on the most upstream side.
Further, the logarithm of the feed roller 19 (rotating shaft 18) positioned on the upstream side (front) and the downstream side (rear) of the thermocompression roller 16 may be two or more.

  Further, heating is performed when the downstream sensor S3 is omitted, or when the downstream sensor S3 does not detect the paper sheet P when the second set time has elapsed after the upstream sensor S1 detects the paper sheet P. The pressure roller 16 and the feed roller 19 may not be reversed. In such a case, it is impossible to prevent the laminate film F and the paper sheet P from being entangled with the feed roller 19 located on the downstream side of the thermocompression roller 16, but the laminate film F and the paper sheet P are prevented. Is entangled with the rollers disposed in the case 11, it is empirically known that most of them are entangled with the heat pressure roller 16 instead of the feed roller 19 located on the downstream side. It is possible to solve most of the tangled troubles. In addition, in this case, a mechanism for preventing the laminate film F and the paper sheet P from being deeply entangled with the downstream thermocompression-bonding roller 16 becomes unnecessary, so that the configuration is simplified and can be realized at a lower cost. Become.

  Although the said embodiment and each modification are the types which clamp the paper sheet P between the upper part and the lower part of the sheet of laminated film F, this invention is a pair of paper sheet P located above and below. Applicable to all types of products that heat and pressure-bond a thermoplastic laminate film and a sheet of paper, such as a type in which a sheet P is sandwiched with a laminate film, or a peelable type that can be peeled off from these permanent adhesive types it can.

It is a vertical side view when each roller of 1st Embodiment of the desk-top type | formula laminator to which this invention is applied is rotating normally. It is a perspective view before pressure bonding of a laminate film and a paper sheet. It is a perspective view of the lamination completed body which pressure-bonded the laminate film and the paper sheet. It is a vertical side view of a laminator when each roller reversely rotates. It is a flowchart for demonstrating operation | movement of a laminator. It is a vertical side view similar to FIG. 1 of the first modification shown with the motor and control circuit omitted. It is a vertical side view similar to FIG. 1 of the second modified example in which the motor and the control circuit are omitted.

Explanation of symbols

10 10 '10 "Laminator 11 Case 12 Inlet opening 13 Outlet opening 15 Rotating shaft 16 Heating and pressing roller 18 Rotating shaft 19 Feeding roller 20 Heating device 21 Arc portion 22 Guide portion 23 Horizontal guide portion 25 Guide member 26 Horizontal guide portion 27 Guide Part C Control circuit (control means)
F Laminate film M Motor (drive means)
P Paper sheet PF Laminated finished body S1 Upstream sensor S2 S2A S2B Intermediate sensor S3 Downstream sensor SW Main switch

Claims (2)

A case having an inlet opening for inserting a thermoplastic laminate film and paper sheets stacked on each other, and an outlet opening for discharging;
At least a pair of thermocompression-bonding rollers provided in the case and heated by a heating device and sandwiching the laminate film and the paper sheet, and thermocompression-bonding;
A feed roller for moving the laminate film and the paper sheet disposed at least downstream of the thermocompression-bonding roller in the case;
Driving means for rotationally driving the thermocompression-bonding roller and the feed roller;
An upstream sensor for detecting the position of the paper sheet provided between the most upstream roller in the case and the inlet opening;
An intermediate sensor for detecting the position of the paper sheet disposed between the thermocompression-bonding roller and the feed roller located on the downstream side of the thermocompression-bonding roller;
When the intermediate sensor does not detect the paper sheet after a predetermined first set time after the upstream sensor detects the paper sheet, the thermocompression roller and the thermocompression bonding are controlled by controlling the driving means. Control means for reversing the feed roller upstream of the roller;
A laminator characterized by comprising. The laminator according to claim 1, wherein
A downstream sensor for detecting the position of the paper sheet provided between the most downstream roller in the case and the outlet opening;
The control means controls the driving means when the downstream sensor does not detect the paper sheet after a second set time longer than the first set time after the upstream sensor detects the paper sheet. A laminator that reverses all of the feed rollers and the thermocompression-bonding rollers.

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