JPS5840494B2 - Automatic single-fed laminating machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an automatic sheet laminating machine that laminates a strip film on the surface of sheets that are continuously fed out, and separates adjacent sheets that are fed out from each other at the boundary. Regarding.

Conventional sheet-fed laminating machines laminate a strip of film on the surface of sheets that are continuously fed out, and cut adjacent sheets with a knife on one side edge of the continuous film at the boundary between them. Each worker held a sheet of paper in his hand and tore the film in the direction of the warp fibers, separating each sheet one by one.

During lamination work, at least two or more workers are required on the paper feeding side and the film tearing side, and the film tearing work involves notching the film with a knife and cutting the film at the same time as it is being continuously transported. Since the paper or film must be torn in the direction of , there is a risk of damaging the sheet or film with the knife, or not making notches with the knife at the required locations on the film, so the work requires skill.

At the same time, since the work of making notches on the film was done manually, there was a drawback that high-speed operation was not possible and the cost was high.

The present invention eliminates the drawbacks of the prior art, and includes the operations of gluing the film, drying it, adhering it to the sheet, fixing the film, scoring the film at the boundary between adjacent sheets, and making the film The film is automatically and continuously torn in the warp direction from the opening of the machine, and only one worker can operate and monitor the machine, requiring no skill, achieving high-speed operation and low-cost laminating sheets. The purpose is to provide paper.

Other objectives and configuration 1 of the present invention will be explained with reference to the drawings to clarify the functions and effects thereof.

Reference numeral A denotes an adhesive dispensing device, on which a shaft a on which a roll-wound film 1 made of a thermoplastic resin strip for lamination is rotatably placed.

Reference numeral 2 designates a motor that rotates the applicator roll 3 and presser roll 4 in conjunction with each other, and 5 designates a roll (doctor roll) for adjusting the coating thickness of adhesive liquid that is brought into contact with the outer peripheral surface of the applicator roll 3.A reverse type hard coater is used. .

Adhesive liquid is supplied to the vat between the coating roll 3 and the coating thickness adjustment roll through an outflow pipe using a rotary gear pump, and excess adhesive liquid is constantly circulated to a tank (not shown) to keep it well-oiled. The mixed adhesive solution is supplied to the vat.

The film 1 passes through a guide roll b, a coating roll 3, a holding roll 4, and a guide roll C, and is sent to a tunnel type drying device B.

Since the application roll 3 is rotated in the opposite direction to the feeding direction of the film 1, it is uniformly broken down by the doctor roll 5, and a constant amount of adhesive liquid is always applied to one surface of the film.

This doctor roll is accurate due to the fine adjustment handle d.
Fine adjustments are possible.

The tunnel type drying device B includes a blower 6, a heater 7, a ventilation fan e1, an exhaust fan f1, an arched film guide roll g2g
t..., a tunnel h, etc., and the film 1 is turned upward with the surface coated with the adhesive solution, and the solvent contained in the adhesive solution is volatilized within the tunnel h.

The adhesive liquid that has come out of the tunnel h is removed, and the films softened by heating are fed out one by one from a conventional sheet feeder E with the adhesive liquid side down, and the adjacent sheets that are fed out are The sheets P1 and P2 are sent out with their opposing edges stacked on top of each other, placed on a cotton endless belt (not shown) that circulates over a sheet feeder j, and placed on a registration rail k on the side of the endless belt. A sheet of paper P, inserted along
Overlap the top surface of P2... and guide roll of the laminating device LD! It is then fed between preliminary laminating rolls 11 and 12.

Between these pre-laminate rolls 11 and 12, the film 1
The coating liquid level on sheet P1. It is temporarily adhered to the surfaces of P2... in sequence and fed between the next laminating roll 8 and pressure roll 10.

The laminating roll 8 has an infrared heater built inside, and the laminating temperature is always stably heated by an automatic temperature controller to maintain the uniformity of the product.

The pressure roll 10 is hydraulically in contact with the lamination roll 8, and has a gauge scale so that accurate adjustment can always be made depending on the type of film 1.

The laminating roll 8 is interlocked by a continuously variable transmission 9a of a motor 9, and the laminating speed is increased from 6 to 30 m/min. It can be freely adjusted according to changes in the paper quality of P2.

Film 1 and sheet P1. P2 is laminating roll 8
When the sheets P1 and P2 pass between the pressure rolls 10 and 10, a portion Px where the adjacent side edges of the sheets P1 and P2 overlap as shown in FIG.
Including sheet P1. Film 1 on the entire surface of P2...
is closely attached.

Sheet P1 to which film 1 is adhered. The film 1 of P2... is cooled by the cooling roll 13 interlocked with the laminating roll 8 in contact with the surface of the film, so that the adhesive liquid is quickly fixed and the sheets of paper P1, P2... Polishing is done.

Sheet P1 that has passed through the cooling roll 13. P2... is fed between the guide rolls 14 and 15 which are interlocked by the motor 9, and is then rotated at a circumferential speed greater than the circumferential speed of the guide rolls 14 and 15.
and the tearing roll 18.

A rotary cutter 16 is provided between the guide roll 14, 15, the tear roll 18, and the holding roll 19 for making a cut 1a on one side edge of the film 1 at the overlapping part Px of the sheets P1 and P2.

This rotary cutter 16 shaft is provided with a guide sheet 16a, and the guide sheet 16a is in contact with the back surface of one side of the sheet P1 which precedes the sheet P2, and the rotary cutter 16 is attached to one side of the film 1. facing the surface.

Sheet P1. As P2... advances in the direction of the tearing roll 18 and the pressing roll 19, the cutting edge of the rotary cutter 16 comes into contact with the left end of the overlapping part Px (see Fig. 3), so there is a small amount of material on one side edge of the film 1. Dimension cut 1a
will be created.

However, the sheets P1 and P2 are not damaged.

The contact pressure between the tearing roll 18 and the holding roll 19 provided on one side under the frame is greater than the contact pressure between the holding roll 19 in contact with the rolls 18a and 18b mounted on the same axis on the other side and these rolls. Moreover, as mentioned above, the holding roll 19 is larger than the guide roll 1.
Since the tearing roll 18 and the UJ-ru 18a, 1 are rotated at a circumferential speed greater than the circumferential speed of
Tension is instantaneously applied to the sheet sandwiched between the ab and the holding roll 19, and the strength of the film 1 in the longitudinal direction is stronger against tearing force than the strength in the transverse direction (warp direction). Therefore, a tension greater than the tension applied to other parts of the film is applied to the cut 1a of the film 1 on the side that is in contact with the tearing roll 18, which is strongly pressed by the holding roll 19, and the film 1 is moved in the warp direction from the cut 1a. A sheet of paper P torn into pieces
1 and P2 are separated.

The rotary cutter 16 and the receiving plate 17 are attached to the mounting member 16a.
and the guide screw shaft F1 attached to the frame F.
Attach the mounting member 16a to the sheet P1. The rotary cutter 16 is screwed so that it can move forward or backward in the longitudinal direction of P2, and is rotated by turning the handle F2 of the guide screw shaft F1.
Adjust the position of sheet P1. Adjust to the width of P2.

A cut is made in the film 1 by the rotary cutter 16, and when the film 1 is cut in the warp direction by the tearing roll 18 and the holding roll 19, the sheet P1 is separated from the sheet P2 and sent to the stand 20 and stacked. It will be done.

If sheet P1. When placing P2... as a series of scrolls without separating them, use the rotary cutter 16.
It is also possible to wind up the film 1 in a state in which it is adhered to the winding device G on the winding shaft G2 rotated by the motor G1 without using the film 1.

Figure 1 shows the winding device G in place except for the stand 20 in Figure 2.
This shows the case where the

As described above, in the present invention, when a thermoplastic film is adhered to a sheet of paper, the thickness of the adhesive liquid on the application roll can be easily adjusted by using the adhesive liquid application thickness adjustment roll on the application roll.

The film coated with the adhesive is heated by the ventilation fan and heater of the dryer, and the volatile components of the adhesive evaporate, leaving behind the adhesive component, which becomes flexible and becomes easy to adhere to sheets of paper.

The sheets are fed out one by one from a sheet feeding machine, and the film is bonded with a laminating roll and cooled while the opposing edges of the fed out adjacent sheets are overlapped with each other. This enables continuous automatic lamination.

In order to separate the sheets connected by the film, a cut is made with a rotary cutter on one side edge of the film at the overlapping part of the sheets, and on both sides of this cut, one sheet is separated from the other. The sheet can be automatically cut in the warp direction from one side edge of the film to the other side by applying tension between the guide roll and tearing roll, and the entire process can be operated continuously at high speed. It has outstanding effects such as making the finish of the product uniform, saving labor, and being able to provide the product on a low floor.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a plan view showing the winding device of FIG. FIG. 4 is an enlarged side view of the overlapping portion of the sheets and the adhesive portion of the film, and FIG. 4 is an enlarged plan view of the state in which the film adhered to the sheets is cut off using a rotary cutter. 1...Film, 2...Motor, 3
...Applying roll, 4...Pressure roll,
5...Coating thickness adjustment roll, A...Adhesive liquid coating device, 6...Blower, 7...Heater B...Tunnel type Drying device, 8...
...Main laminating roll, 9...Motor
10... Press roll, 11.12... Preliminary laminating roll, 13... Cooling roll, L
D... Laminating device, E... Paper feeder, Pl, P2... Sheet, J... Paper difference table, 14, 15... ...Guidance roll, 16.
...Rotary cutter 17...Batch plate, 18...Film tearing roll, 19...
...press roll, 20... units.

Claims (1)

[Claims] 1. An adhesive coating device A having a coating roll 3, a holding roll 4, and a coating thickness adjusting roll 5, which are driven at high speed by a motor 2, which pulls out a film and applies adhesive to one side of the film 1, and Tunnel type drying device B having a blower 6 and a heater 7 for drying the adhesive liquid of the film
and a laminating device LD which has an infrared heater sealed inside and is interlocked by a motor 9, a main laminating roll 8, a pressure roll 10, preliminary laminating rolls 11 and 12, and a cooling roll 13, and a sheet feeding machine E. Preliminary laminating rolls 11 and 1 are loaded with sheets to be sent out with opposing edges of adjacent sheets P1 and P2 overlapped with each other.
2, and the continuous sheet P7. Guide roll 14.1 for feeding out P2
5, a rotary cutter 16 and a receiving plate 17 that make a cut in the film 1 at one side edge of the overlapping part of the continuous sheets P1 and P2, and a rotary cutter 16 that makes a cut on the one side edge. A film tearing roll 18 and a restraining roll 19, which have the function of separating the cut portion of the provided sheet and are rotated at a circumferential speed higher than the circumferential speed of the guide roll 14, 15, and a film tearing roll. 18 and the holding roll 19, the film is torn and separated, and the separated film 1 is laminated with a sheet P1. An automatic single-fed laminating machine characterized by comprising a table 20 for stacking P2.