Laminating machine for easy-to-stretch foam and laminating method thereof

Abstract

The invention relates to a laminating machine for easily-stretched foam and a laminating method of the laminating machine. The laminating machine comprises a stand column frame (1), a cross beam (2) and a workbench (3). A foam discharging roller (4), a double-faced adhesive tape discharging roller (5), a double-faced collagen paper receiving roller (6) and a release film discharging roller (7) are sequentially arranged on the cross beam (3) in the conveying direction of the easily-stretched foam; a stripping knife (10) for stripping a double-sided adhesive tape and double-sided collagen paper, a plurality of pressing rollers (13) and a plurality of bottoming rollers (14) are arranged on the surface of the workbench (3); and a protective film feeding roller (8) and a protective film receiving roller (9) are arranged below the workbench (3). Compared with the prior art, in the laminating process of the laminating machine designed by the invention, the foam automatically falls down and is not pulled by external force, so that the laminating force is uniform, the product quality is stable, and the tolerance of the product is less than 0.1; and the laminating capacity is high and is 3-4 times that of manual laminating.

Description

Technical Field

[0001] The invention relates to the technical field of die-cutting processing, and in particular to a laminating machine for easily stretchable foam and a laminating method thereof. Background Art

[0002] Foam is a material made of foamed plastic particles. It is a high molecular polymer with many small cells. The solid phase is a polymer matrix, and the small cells are filled with gas. It has many outstanding properties, such as flame retardancy, wear resistance, heat resistance, cold resistance, cushioning, sound absorption, shock resistance, and sealing, such as excellent resistance to compression deformation, ultra-high resilience, impact resistance, and elastic durability. It is widely used in various precision products for shockproof and other purposes.

[0003] There are many types of foam, including PU foam, anti-static foam, conductive foam, EPE, anti-static EPE, CR, EVA, bridged PE, SBR, EPDM, etc. Foam has a series of characteristics such as elasticity, light weight, fast pressure-sensitive fixation, easy to use, easy to bend, ultra-thin volume, and reliable performance. In the die-cutting industry, there are two types of foam. One is self-contained substrate (such as PET substrate or conductive cloth substrate). When this type needs to be laminated, it can be laminated on the laminating machine like other ordinary materials. Because it has its own substrate, there will be no stretching when laminating; the other is foam without substrate, especially soft foam, which is easy to stretch. When laminating, there should be no force. Once there is force, the size of the product will be reduced after it is made. If the tolerance of the product is relatively large, the reduced size may still be within the tolerance range. But now with the development of the electronics industry, product tolerance requirements are becoming more and more refined. If the tolerance is 0.1, it will be out of tolerance. In the prior art, for such easily stretchable foam, manual lamination is preferred, whereby the foam is gently attached to the double-sided adhesive tape by hand. However, manual lamination is slow and cannot meet the needs of enterprise development. Summary of the invention

[0004] The purpose of the present invention is to provide a laminating machine and a laminating method for an easily stretchable foam in order to overcome at least one of the defects of the prior art.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] One of the purposes of the present invention is a laminating machine for stretchable foam, the laminating machine comprising a column frame, a crossbeam and a workbench;

[0007] Along the transport direction of the stretchable foam, the crossbeam is provided with a foam feeding roller for supplying the stretchable foam, a double-sided adhesive feeding roller for supplying the double-sided adhesive, a double-sided adhesive base paper receiving roller for recycling the double-sided adhesive base paper, and a release film feeding roller for supplying the release film in sequence;

[0008] The workbench is provided with a peeling knife for peeling off the double-sided adhesive tape and the double-sided adhesive paper, as well as a plurality of pressing rollers and bottom supporting rollers for transporting the stretchable foam; the workbench is provided with a protective film unwinding roller for supplying the bottom supporting protective film and a protective film receiving roller for rolling up the bottom supporting protective film. The pressing roller and the bottom supporting roller are arranged in pairs, and the pressing roller is located directly above the bottom supporting roller.

[0009] Furthermore, the distance between the pressing roller and the bottom supporting roller is greater than or equal to the thickness of the stretchable foam. Preferably, the distance between the two is greater than the thickness of the stretchable foam.

[0010] Furthermore, there are at least three groups of pressing rollers, preferably three groups.

[0011] Furthermore, the pressing rollers are arranged in parallel on the workbench.

[0012] Furthermore, the stripping knife is arranged on the workbench surface between the pressing rollers.

[0013] Furthermore, the foam discharge roller rotates counterclockwise to ensure that the supplied stretchable foam is dropped without force.

[0014] Furthermore, the foam discharge roller and the release film discharge roller are arranged at the head and tail ends of the beam.

[0015] Furthermore, along the transport direction of the stretchable foam, the protective film unwinding roller and the protective film receiving roller are sequentially arranged under the workbench surface.

[0016] Furthermore, the laminating machine is also provided with a plurality of spare receiving rollers to ensure that the working rollers can be replaced in time when a failure occurs.

[0017] The second object of the present invention is to provide a method for laminating an easily stretchable foam, using the easily stretchable foam laminating machine as described above, comprising the following steps:

[0018] Pull the stretchable foam out from the foam feeding shaft, the foam feeding shaft rotates counterclockwise, and the pulled stretchable foam hangs down without force; the stretchable foam passes through the gap between the pressing roller and the bottom supporting roller, and overlaps on the die-cutting machine;

[0019] When the stretchable foam passes through the pressing roller, a bottom supporting protective film is provided on the laminating side of the bottom supporting roller, and the bottom supporting protective film is pulled out from the protective film unwinding roller and retracted from the protective film receiving roller;

[0020] Among them, when the stretchable foam passes through the pressing roller, a double-sided tape is attached to the top, and the double-sided tape is pulled out from the double-sided tape unwinding roller;

[0021] Among them, a release film is attached to the top of the easily stretchable foam with double-sided tape, and the release film is pulled out from a release film discharge roller.

[0022] Compared with manually laminating the stretchable foam, the laminating machine designed by the present invention has the following beneficial effects:

[0023] (1) During the bonding process, the foam of the bonding machine designed by the present invention falls down automatically without external pulling, so the bonding force is uniform, the product quality is stable, and the product tolerance is less than 0.1.

[0024] (2) The laminating machine designed by the present invention has a high laminating capacity, which is 3-4 times that of manual laminating. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the working of the laminating machine for the easily stretchable foam in the embodiment;

[0026] Figure 2 It is a pressing assembly diagram between the pressing roller and the bottom supporting roller in the embodiment;

[0027] Figure 3 This is a diagram of the pressing assembly between the front pressing roller and the bottom supporting roller in the embodiment without improvement;

[0028] Numbers in the figure are as follows: 1-column frame; 2-crossbeam; 3-workbench; 4-foam unloading shaft; 5-double-sided adhesive unloading roller; 6-double-sided adhesive base paper receiving roller; 7-release film unloading roller; 8-protective film unloading roller; 9-protective film receiving roller; 10-peeling knife; 11-spare receiving roller; 12-die-cutting machine; 13-pressing roller; 14-bottom supporting roller; a-raised area; b-protective film; c-easy-to-stretch foam. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0030] Example 1

[0031] A laminating machine for stretchable foam, see Figure 1 The laminating machine comprises a column frame 1, a crossbeam 2 and a workbench 3; along the transport direction of the stretchable foam, the crossbeam 3 is provided with a foam feeding roller 4, a double-sided adhesive feeding roller 5, a double-sided adhesive base paper receiving roller 6 and a release film feeding roller 7 in sequence; a peeling knife 10 for peeling off the double-sided adhesive and the double-sided adhesive base paper, as well as three pairs of pressing rollers 13 and a bottom supporting roller 14 are provided on the workbench 3; a protective film feeding roller 8 and a protective film receiving roller 9 are provided under the workbench 3.

[0032] The distance between the pressing roller 13 and the bottom supporting roller 14 is greater than or equal to the thickness of the easily stretchable foam. In this embodiment, the pressing roller 13 is raised to increase the distance between the pressing roller 13 and the bottom supporting roller 14. Figure 2 , Figure 3 There are three groups of pressing rollers 13. The pressing rollers 13 are arranged in parallel on the workbench 3. The stripping knife 10 is arranged on the workbench 3 between the pressing rollers 13. The foam feeding roller 4 rotates counterclockwise to allow the supplied foam to hang down without force. The foam feeding roller 4 and the release film feeding roller 7 are arranged at the head and tail ends of the beam 3. Along the transport direction of the stretchable foam, the protective film feeding roller 8 and the protective film receiving roller 9 are arranged in sequence under the workbench 3. The laminating machine is also provided with a plurality of spare receiving rollers 11.

[0033] A method for laminating an easily stretchable foam comprises the following steps:

[0034] The easily stretchable foam is pulled out from the foam discharge shaft 4, and the foam discharge shaft 4 rotates counterclockwise, and the pulled easily stretchable foam hangs down without force; the easily stretchable foam passes through the gap between the pressing roller 13 and the bottom supporting roller 14, and overlaps on the die-cutting machine;

[0035] Among them, when the easily stretchable foam passes through the pressing roller 13, a bottom protective film is provided on the bonding side of the bottom roller 14, and the bottom protective film is pulled out from the protective film discharge roller 8 and retracted from the protective film collection roller 9; when the easily stretchable foam passes through the pressing roller 13, a double-sided tape is attached to the top, and the double-sided tape is pulled out from the double-sided tape discharge roller 5; a release film is attached to the top of the easily stretchable foam with the double-sided tape, and the release film is pulled out from the release film discharge roller 7.

[0036] Specifically, the stretchable foam is placed on the foam discharge shaft 4, the foam discharge shaft 4 is manually rotated counterclockwise, and then the foam is pulled out from the foam discharge shaft 4 and hung down without force. Then the pressing roller 13 is raised, and the distance between the pressing roller 13 and the bottom supporting roller 14 is greater than the thickness of the foam to ensure that the pressing roller 13 will not hit the foam when rolling; the bottom supporting protective film is used to carry the easily stretchable foam. After the easily stretchable foam is affixed with the double-sided tape, the double-sided tape original paper must be discarded. When the bottom supporting protective film carries the easily stretchable foam, there will be no force when the double-sided tape original paper is removed with the stripping knife 10. At this time, attention should also be paid to the placement of the stripping knife 10 to ensure that the stripping knife 10 is flat on the material instead of squeezing the material, otherwise there will be force generated; after the double-sided tape original paper is discharged, the release film is attached to the adhesive surface, the bottom supporting protective film can be removed by the bottom supporting roller 14, and then the die-cutting machine 12 can be connected for punching.

[0037] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A laminating machine for stretchable foam, characterized in that: The laminating machine comprises a column frame (1), a crossbeam (2) and a workbench (3); Along the transport direction of the stretchable foam, the crossbeam (3) is provided with a foam discharge roller (4), a double-sided adhesive discharge roller (5), a double-sided adhesive base paper receiving roller (6) and a release film discharge roller (7) in sequence; The workbench (3) is provided with a peeling knife (10) for peeling off the double-sided adhesive tape and the double-sided adhesive paper, as well as a plurality of pressing rollers (13) and a bottom supporting roller (14); the workbench (3) is provided with a protective film unwinding roller (8) and a protective film receiving roller (9) under the workbench (3).

2. The laminating machine for stretchable foam according to claim 1, characterized in that: The distance between the pressing roller (13) and the bottom supporting roller (14) is greater than or equal to the thickness of the easily stretchable foam.

3. The laminating machine for stretchable foam according to claim 1, characterized in that: There are at least three groups of pressing rollers (13).

4. The laminating machine for stretchable foam according to claim 1, characterized in that: The pressing rollers (13) are arranged in parallel on the workbench (3).

5. The laminating machine for stretchable foam according to claim 1, characterized in that: The stripping knife (10) is arranged on the surface of the workbench (3) between the pressing rollers (13).

6. The laminating machine for stretchable foam according to claim 1, characterized in that: The foam discharge roller (4) rotates counterclockwise.

7. The laminating machine for stretchable foam according to claim 1, characterized in that: The foam discharge roller (4) and the release film discharge roller (7) are arranged at the head and tail ends of the crossbeam (3).

8. The laminating machine for stretchable foam according to claim 1, characterized in that: Along the transport direction of the stretchable foam, the protective film unwinding roller (8) and the protective film receiving roller (9) are sequentially arranged under the surface of the workbench (3).

9. The laminating machine for stretchable foam according to claim 1, characterized in that: The laminating machine is also provided with a plurality of spare receiving rollers (11).

10. A method for laminating an easily stretchable foam, using the easily stretchable foam laminating machine according to any one of claims 1 to 9, characterized in that: The steps include: The easily stretchable foam is pulled out from the foam discharge shaft (4), and the foam discharge shaft (4) rotates counterclockwise, and the pulled easily stretchable foam hangs down without force; the easily stretchable foam passes through the gap between the pressing roller (13) and the bottom supporting roller (14), and overlaps on the die-cutting machine; When the stretchable foam passes through the pressing roller (13), a bottom supporting protective film is provided on the laminating side of the bottom supporting roller (14), and the bottom supporting protective film is pulled out from the protective film unwinding roller (8) and retracted from the protective film receiving roller (9); When the stretchable foam passes through the pressing roller (13), a double-sided adhesive tape is attached to the top, and the double-sided adhesive tape is pulled out from the double-sided adhesive feeding roller (5); A release film is attached to the top of the easily stretchable foam with double-sided adhesive, and the release film is pulled out from a release film discharge roller (7).

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