Die cutting device and die cutting method for double-sided local gum PET die cutting piece

Abstract

The invention relates to a die cutting device and a die cutting method for a double-sided local gum PET die cutting piece, the die cutting device comprises a second material belt die cutting unit, a first material belt die cutting unit and a PET material belt die cutting unit, the first material belt die cutting unit and the PET material belt die cutting unit are connected in series, and the PET die cutting piece comprises a fourth auxiliary material release film, a second double-sided adhesive tape, a PET material belt, a first double-sided adhesive tape and a first underpinning release film which are attached in sequence. Compared with manual assembly which is easy to generate bubbles, according to the prepared double-sided local gum PET die cutting piece, the first material belt containing the double-sided adhesive tape is firstly attached, then the PET material belt is directly attached in the process of preparing the second material belt, and then the first material belt is directly attached to the PET material belt, so that gum is attached to the two sides of the PET material belt, and the production efficiency is improved. And meanwhile, the problem of bubbles can be effectively solved through machine fitting and press fit in the fitting process.

Description

Technical Field

[0001] The invention relates to the technical field of die-cutting, and in particular to a die-cutting device and a die-cutting method for a double-sided partially adhesive-backed PET die-cutting piece. Background Art

[0002] Polyester materials such as polyethylene terephthalate (PET) are cheap, low-density, non-toxic and tasteless. They have excellent transparency, optical properties and toughness, good mechanical strength and gas barrier properties, as well as excellent high and low temperature resistance, chemical resistance and oil resistance. They are widely used in various types of food, medicine, non-toxic and sterile packaging materials, textiles, precision instruments, high-end packaging materials for electrical components, and various optical base films and protective film materials. However, its heat resistance, mechanical properties and durability need to be further improved.

[0003] PET used in the die-cutting industry is a type of Mylar, with high insulation strength, high voltage resistance, moisture, gas, high heat and chemical resistance; low shrinkage, not easy to embrittle and wear resistance. The product is widely used in electrical insulation; PCB circuit board insulation and protection. When the existing PET is backed on both sides, manual assembly is often used, but manual assembly is prone to bubbles and low product quality. Summary of the invention

[0004] The purpose of the present invention is to provide a die-cutting device and a die-cutting method for double-sided partially adhesive PET die-cutting parts in order to overcome at least one of the defects of the above-mentioned prior art. There are partial adhesives on both sides of PET, and the shape of the adhesive is smaller than that of PET. This is more troublesome to make in die-cutting. If there is a pasting device, it is quite convenient to make. However, if there is no pasting device, generally an assembly method will be selected. The present invention designs a method.

[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 to provide a die-cutting device for double-sided partially adhesive-backed PET die-cut parts, comprising:

[0007] A second material strip die-cutting unit is used to prepare the first material strip, wherein the second material strip comprises a second bottom release film, a second double-sided adhesive tape, and a third auxiliary material release film which are sequentially attached;

[0008] A first material strip die-cutting unit and a PET material strip die-cutting unit connected in series, wherein the first material strip comprises a first bottom support release film, a first double-sided adhesive tape, and a first auxiliary material release film which are sequentially bonded, and the PET die-cutting piece comprises a fourth auxiliary material release film, a second double-sided adhesive tape, a PET material strip, a first double-sided adhesive tape, and a first bottom support release film which are sequentially bonded.

[0009] Furthermore, the second material strip die-cutting unit includes, arranged in sequence: a second bottom release film discharge roller, a second double-sided adhesive discharge roller, a second double-sided adhesive base paper collection roller, a second auxiliary material release film discharge roller, a second punching die, a contour waste discharge roller, a waste tape discharge roller, a second auxiliary material release film discharge roller, a third auxiliary material release film discharge roller and a second material strip collection roller.

[0010] Furthermore, the first material strip die-cutting unit includes, arranged in sequence: a first bottom release film discharge roller, a first double-sided adhesive discharge roller, a first double-sided adhesive base paper receiving roller, a first auxiliary material release film discharge roller, a first punching die, a contour waste material discharge roller, a waste tape discharge roller, and a first auxiliary material release film discharge roller.

[0011] Furthermore, the first punching die and the second punching die have the same structure.

[0012] Furthermore, the PET material strip die-cutting unit includes the following arranged in sequence: a PET unloading roller, a second material strip unloading roller, a laminating jig, a second bottom release film discharge roller, a fourth auxiliary material release film discharge roller, a third punching die, a contour waste discharge roller and a PET die-cutting piece receiving roller.

[0013] Furthermore, the cutting die of the third punching die is larger than the cutting dies of the first punching die and the second punching die.

[0014] Furthermore, the pressing jig comprises an upper pressing plate and a lower pressing plate; a pressing protrusion is provided in the middle of the upper pressing plate; and a pressing groove corresponding to the pressing protrusion is provided in the lower pressing plate.

[0015] Furthermore, a positioning pin is provided on the side of the upper pressing plate, and the positioning pin is inserted into a positioning hole provided on the side of the lower pressing plate to achieve position fixation of the two.

[0016] The second object of the present invention is to provide a die-cutting method for double-sided partially adhesive-backed PET die-cut parts, which uses the die-cutting device as described above and comprises the following steps:

[0017] Laminating the second bottom release film with the second double-sided adhesive tape, peeling off the base paper on the upper surface of the second double-sided adhesive tape, laminating the second auxiliary material release film on the upper surface of the second double-sided adhesive tape, punching the second bottom release film with a second punching die, discharging the outline waste, laminating the waste discharge tape on the upper surface of the second auxiliary material release film, excluding the second auxiliary material release film, and laminating the third auxiliary material release film on the upper surface of the second double-sided adhesive tape to obtain the first material tape;

[0018] The first bottom release film is laminated to the first double-sided adhesive tape, the base paper on the upper surface of the first double-sided adhesive tape is peeled off, the first auxiliary material release film is laminated to the upper surface of the first double-sided adhesive tape, the first punching die is used for punching, the contour waste is discharged, the waste discharge tape is laminated to the upper surface of the first auxiliary material release film, the first auxiliary material release film is removed, the PET material tape is laminated to the upper surface of the first double-sided adhesive tape, the third auxiliary material release film is removed from the second material tape, and the tape is pressed with the PET material tape to discharge the second bottom release film, the fourth auxiliary material release film is laminated to the upper surface of the second double-sided adhesive tape, and the third punching die is used for punching to obtain a double-sided partially adhesive backed PET die-cut part.

[0019] Furthermore, the third punching die punches to the second bottom support release film; the first punching die punches to the first bottom support release film; and the third punching die punches to the first bottom support release film.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] (1) Compared with manual assembly, which is prone to bubbles, the double-sided partially adhesive PET die-cut parts prepared by the present invention first laminate the first material tape containing double-sided adhesive, and then directly laminate the PET material tape during the preparation of the second material tape, and then directly laminate the first material tape on the PET material tape. This operation can ensure that both sides of the PET material tape are laminated with adhesive. At the same time, the lamination process is carried out by machine lamination and pressing, which can effectively solve the bubble problem;

[0022] (2) The present invention improves production capacity by switching from manual assembly to machine bonding, which can increase production capacity by about 3 times. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a front view of the first punching die in the embodiment;

[0024] Figure 2 is a front view of the second punching die in the embodiment;

[0025] Figure 3 It is a front view of the lower pressing plate of the pressing jig in the embodiment;

[0026] Figure 4 is a front view of the third punching die in the embodiment;

[0027] Figure 5 This is a punching layer diagram of the second material strip in the embodiment;

[0028] Figure 6 This is a punching layer diagram of the first material strip in the embodiment;

[0029] Figure 7 It is a lamination layer diagram in the embodiment;

[0030] Figure 8This is a punching layer diagram of the PET die-cut part in the embodiment;

[0031] Fig. 9 This is a punching flow chart of the first material strip in the embodiment;

[0032] Fig.10 It is a punching flow chart of the PET die-cut parts in the embodiment;

[0033] Fig.11 This is a schematic diagram of mold installation in the embodiment;

[0034] Fig.12 A schematic diagram of a pressing jig in an embodiment;

[0035] Fig.13 Schematic diagram of an upper pressing plate of a pressing jig in an embodiment;

[0036] Fig.14 Schematic diagram of the lower pressing plate of the pressing fixture in the embodiment;

[0037] As shown in the figure: 1-second bottom support release film feeding roller; 2-second double-sided adhesive feeding roller; 3-second double-sided adhesive base paper receiving roller; 4-second auxiliary material release film feeding roller; 5-second punching die; 6-contour waste discharge roller; 7-waste tape feeding roller; 8-second auxiliary material release film discharge roller; 9-third auxiliary material release film feeding roller; 10-second material tape receiving roller; 11-first bottom support release film feeding roller; 12-first double-sided adhesive feeding roller; 13-first double-sided adhesive base paper receiving roller; 14-first auxiliary material release film feeding roller; 15-first punching die Mould; 16-waste discharge roller for contoured material; 17-discharge roller for waste tape; 18-waste discharge roller for first auxiliary material release film; 19-PET discharge roller; 20-second material tape discharge roller; 21-pressing jig; 22-second bottom release film discharge roller; 23-fourth auxiliary material release film discharge roller; 24-third punching mould; 25-waste discharge roller for contoured material; 26-PET die-cutting piece receiving roller; 301-upper pressing plate; 3011-pressing protrusion; 3012-positioning pin; 302-lower pressing plate; 3021-positioning hole; 3022-pressing groove. DETAILED DESCRIPTION

[0038] 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.

[0039] Example

[0040] See Figure 1-14 , a die-cutting device for double-sided partially adhesive PET die-cut parts, comprising:

[0041] A second material strip die-cutting unit is used to prepare the first material strip, wherein the second material strip comprises a second bottom release film, a second double-sided adhesive tape, and a third auxiliary material release film which are sequentially attached;

[0042] A first material strip die-cutting unit and a PET material strip die-cutting unit connected in series, wherein the first material strip comprises a first bottom support release film, a first double-sided adhesive tape, and a first auxiliary material release film which are sequentially bonded, and the PET die-cutting piece comprises a fourth auxiliary material release film, a second double-sided adhesive tape, a PET material strip, a first double-sided adhesive tape, and a first bottom support release film which are sequentially bonded.

[0043] Please see Fig. 9 The second material strip die-cutting unit includes: a second bottom release film discharge roller 1, a second double-sided adhesive discharge roller 2, a second double-sided adhesive base paper receiving roller 3, a second auxiliary material release film discharge roller 4, a second punching die 5, a contour waste discharge roller 6, a waste tape discharge roller 7, a second auxiliary material release film discharge roller 8, a third auxiliary material release film discharge roller 9 and a second material strip receiving roller 10.

[0044] Please see Fig.10 The first material strip die-cutting unit includes: a first bottom release film discharge roller 11, a first double-sided adhesive discharge roller 12, a first double-sided adhesive base paper receiving roller 13, a first auxiliary material release film discharge roller 14, a first punching die 15, a contour waste discharge roller 16, a waste tape discharge roller 17, and a first auxiliary material release film discharge roller 18.

[0045] Please see Figure 1 , 2 The first punching die and the second punching die have the same structure.

[0046] Please see Fig.10 The PET material strip die-cutting unit includes: a PET unloading roller 19, a second material strip unloading roller 20, a pressing jig 21, a second bottom release film discharge roller 22, a fourth auxiliary material release film discharge roller 23, a third punching die 24, a contour waste discharge roller 25 and a PET die-cutting piece receiving roller 26. The knife die of the third punching die is larger than the knife die of the first punching die and the second punching die. Figure 3 .

[0047] Please see Figure 12-14 The pressing fixture includes an upper pressing plate 301 and a lower pressing plate 302; a pressing protrusion 3011 is provided in the middle of the upper pressing plate 301; and a pressing groove 3022 corresponding to the pressing protrusion 3011 is provided in the lower pressing plate. A positioning pin 3012 is provided on the side of the upper pressing plate 301, and the positioning pin 3012 is inserted into a positioning hole 3021 provided on the side of the lower pressing plate 302 to achieve the fixed position of the two.

[0048] This embodiment also provides a die-cutting method for a double-sided partially adhesive-backed PET die-cut piece, which uses the die-cutting device as described above and includes the following steps:

[0049] The second bottom support release film discharged by the second bottom support release film discharge roller 1 is laminated with the second double-sided adhesive discharged by the second double-sided adhesive discharge roller 2, the second double-sided adhesive base paper is peeled off by the second double-sided adhesive base paper receiving roller 3, the second auxiliary material release film discharged by the second auxiliary material release film discharge roller 4 is laminated to the upper surface of the second double-sided adhesive, the second punching die 5 punches to the second bottom support release film, the contour waste is discharged, and then the waste discharge tape discharged by the waste discharge tape discharge roller 7 is laminated to the upper surface of the second auxiliary material release film, the second auxiliary material release film is discharged by the second auxiliary material release film waste discharge roller 8, and then the third auxiliary material release film discharged by the third auxiliary material release film discharge roller 9 is laminated to the upper surface of the second double-sided adhesive, and the first material tape is collected by the second material tape receiving roller 10;

[0050] The first bottom release film released by the first bottom release film discharge roller 11 is laminated with the first double-sided adhesive released by the first double-sided adhesive discharge roller 12, the first double-sided adhesive base paper on the upper surface is peeled off by the first double-sided adhesive base paper receiving roller 13, the first auxiliary material release film released by the first auxiliary material release film discharge roller 14 is laminated on the upper surface of the first double-sided adhesive, the first punching die 15 punches, the contour waste is discharged by the contour waste discharge roller 15, and then the waste discharge tape released by the waste discharge tape discharge roller 17 is laminated on the upper surface of the first auxiliary material release film, and the first auxiliary material release film is laminated by the first auxiliary material release film discharge roller 14. The film waste discharge roller 18 discharges the first auxiliary material release film, and then adheres the PET material tape released by the PET discharge roller 19 to the upper surface of the first double-sided adhesive tape, and then removes the third auxiliary material release film from the second material tape released by the second material tape discharge roller 20, and then presses it with the PET material tape through a pressing fixture 21, and discharges the second bottom release film through the second bottom release film discharge roller 22, and adheres the fourth auxiliary material release film released by the fourth auxiliary material release film discharge roller 23 to the upper surface of the second double-sided adhesive tape, and is punched by the third punching mold 24 to obtain a double-sided partially adhesive-backed PET die-cut part.

[0051] Among them, the third punching die punches to the second bottom support release film; the first punching die punches to the first bottom support release film; the third punching die punches to the first bottom support release film.

[0052] 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 die-cutting device for double-sided partially adhesive PET die-cut parts, It is characterized in that include: A second material strip die-cutting unit is used to prepare the first material strip, wherein the second material strip comprises a second bottom release film, a second double-sided adhesive tape, and a third auxiliary material release film which are sequentially attached; A first material strip die-cutting unit and a PET material strip die-cutting unit connected in series, wherein the first material strip comprises a first bottom support release film, a first double-sided adhesive tape, and a first auxiliary material release film which are sequentially bonded, and the PET die-cutting piece comprises a fourth auxiliary material release film, a second double-sided adhesive tape, a PET material strip, a first double-sided adhesive tape, and a first bottom support release film which are sequentially bonded.

2. A die-cutting device for double-sided partially adhesive-backed PET die-cut parts according to claim 1, It is characterized in that The second material strip die-cutting unit comprises the following which are arranged in sequence: a second bottom support release film discharge roller (1), a second double-sided adhesive discharge roller (2), a second double-sided adhesive base paper receiving roller (3), a second auxiliary material release film discharge roller (4), a second punching die (5), a contour waste discharge roller (6), a waste tape discharge roller (7), a second auxiliary material release film discharge roller (8), a third auxiliary material release film discharge roller (9) and a second material strip receiving roller (10).

3. A die-cutting device for double-sided partially adhesive-backed PET die-cut parts according to claim 1 or 2, It is characterized in that The first material strip die-cutting unit comprises the following which are arranged in sequence: a first bottom support release film discharge roller (11), a first double-sided adhesive discharge roller (12), a first double-sided adhesive base paper receiving roller (13), a first auxiliary material release film discharge roller (14), a first punching die (15), a contour waste material discharge roller (16), a waste tape discharge roller (17), and a first auxiliary material release film discharge roller (18).

4. The die-cutting device for double-sided partially adhesive-backed PET die-cut parts according to claim 3, It is characterized in that The first punching die and the second punching die have the same structure.

5. The die-cutting device for double-sided partially adhesive-backed PET die-cut parts according to claim 1, It is characterized in that The PET material strip die-cutting unit comprises: a PET unloading roller (19), a second material strip unloading roller (20), a pressing jig (21), a second bottom support release film discharge roller (22), a fourth auxiliary material release film discharge roller (23), a third punching die (24), a contour waste discharge roller (25) and a PET die-cutting piece receiving roller (26), which are arranged in sequence.

6. The die-cutting device for double-sided partially adhesive-backed PET die-cut parts according to claim 5, It is characterized in that The cutting die of the third punching die is larger than the cutting dies of the first punching die and the second punching die.

7. The die-cutting device for double-sided partially adhesive-backed PET die-cut parts according to claim 5, It is characterized in that The pressing jig comprises an upper pressing plate (301) and a lower pressing plate (302); a pressing protrusion (3011) is provided in the middle of the upper pressing plate (301); and a pressing groove (3022) corresponding to the pressing protrusion (3011) is provided on the lower pressing plate.

8. The die-cutting device for double-sided partially adhesive-backed PET die-cut parts according to claim 7, It is characterized in that The upper pressing plate (301) is provided with a positioning pin (3012) on the side thereof, and the positioning pin (3012) is inserted into a positioning hole (3021) provided on the side of the lower pressing plate (302) to achieve the fixing of the positions of the two.

9. A die-cutting method for double-sided partially adhesive PET die-cut parts, It is characterized in that The die-cutting device according to any one of claims 1 to 8 is used, comprising the following steps: Laminating the second bottom release film with the second double-sided adhesive tape, peeling off the base paper on the upper surface of the second double-sided adhesive tape, laminating the second auxiliary material release film on the upper surface of the second double-sided adhesive tape, punching the second bottom release film with a second punching die, discharging the outline waste, laminating the waste discharge tape on the upper surface of the second auxiliary material release film, excluding the second auxiliary material release film, and laminating the third auxiliary material release film on the upper surface of the second double-sided adhesive tape to obtain the first material tape; The first bottom release film is laminated to the first double-sided adhesive tape, the base paper on the upper surface of the first double-sided adhesive tape is peeled off, the first auxiliary material release film is laminated to the upper surface of the first double-sided adhesive tape, the first punching die is used for punching, the contour waste is discharged, the waste discharge tape is laminated to the upper surface of the first auxiliary material release film, the first auxiliary material release film is removed, the PET material tape is laminated to the upper surface of the first double-sided adhesive tape, the third auxiliary material release film is removed from the second material tape, and the tape is pressed with the PET material tape to discharge the second bottom release film, the fourth auxiliary material release film is laminated to the upper surface of the second double-sided adhesive tape, and the third punching die is used for punching to obtain a double-sided partially adhesive backed PET die-cut part.

10. A die-cutting method for double-sided partially adhesive-backed PET die-cut parts according to claim 9, It is characterized in that The third punching die punches to the second bottom release film; the first punching die punches to the first bottom release film; the third punching die punches to the first bottom release film.

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