A die cutter assembly for punching bell-mouth double-sided adhesive products and a punching method thereof

Abstract

The present invention relates to a die assembly for punching a trumpet-shaped double-sided adhesive product and a punching method thereof. The die assembly comprises a first punching die, a second punching die and a third punching die. The first punching die is a closed frame-shaped structure with a flange, and the second punching die is a closed square frame structure. The outline of the frame-shaped structure of the first punching die is consistent with the inner edge outline of the product. The outline of the square frame structure of the second punching die is consistent with the outer edge outline of the product. The present invention changes the existing Ω-shaped unclosed first punching die into a closed frame-shaped structure with a flange, and changes the square second punching die with one side open into a closed square frame structure, thereby solving the problem that the opening edge of the trumpet-shaped double-sided adhesive product is broken and shifted during the punching process, effectively ensuring the punching process forming rate of such products, reducing the defective rate, and improving the product production level and production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of die cutting, and in particular to a die cutter assembly for punching a bell-mouth double-sided adhesive product and a punching method thereof. Background Art

[0002] With the development of electronic products, especially the smart phone market, die-cutting processing requirements are becoming more and more stringent. There is a double-sided adhesive product used for the speaker position of mobile phones, such as Figure 1 As shown, its shape is roughly concave. Due to the influence of the speaker structure, the size of the adhesive (which plays a role of fixing and bonding) at this position is very small. In order to increase the processing capacity, multiple products will be processed together during processing, and a release film will be used to carry the double-sided adhesive, and positioning holes will be designed on the release film for fitting and positioning.

[0003] Since the single-side width of the trumpet double-sided adhesive product is only about 1mm, the double-sided adhesive position is difficult to form. During processing, the inner frame of the double-sided adhesive needs to be punched first, and then the outer frame. However, at the first punching position, a horizontal waste discharge line is added to the waste discharge area of ​​the inner frame to facilitate waste discharge after the first punching. At this time, the width of the product glue area is only about 1mm, and it is very easy to cause the product area a and area b to be pulled apart during waste discharge (see Figure 7 ), and the addition of a waste discharge fixture causes the double-sided tape in areas a and b to shift, and cannot be punched again. Summary of the invention

[0004] The purpose of the present invention is to provide a die assembly and a punching method for punching a bell-mouth double-sided adhesive product in order to solve the problem that the a and b areas of the product are easily broken and shifted when punching the existing bell-mouth double-sided adhesive product.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A die cutter assembly for punching a trumpet-mouth double-sided adhesive product, the die cutter assembly comprising a first die cutter for punching the inner contour of the product, a second die cutter for punching the outer contour of the product, and a third die cutter for punching the shape of the release film and the positioning hole of the product.

[0007] The first punching die is a closed frame structure with a flange, and the second punching die is a closed square frame structure;

[0008] The outline of the frame structure of the punch die is consistent with the inner edge outline of the product;

[0009] The outline of the square frame structure of the two-punch cutting die is consistent with the outer edge outline of the product;

[0010] After the two punching cutter dies and the one punching cutter die are combined for punching, the product is formed between the inner side of the two punching cutter dies and the outer side of the one punching cutter die.

[0011] The present invention changes the existing Ω-shaped open single punching die into a closed frame structure with a flange, and changes the square double punching die with one side open into a closed square frame structure, thereby solving the problem that the opening edge of the trumpet-shaped double-sided adhesive product is broken and shifted during the punching process, effectively ensuring the punching process forming rate of such products and reducing the defective rate.

[0012] Preferably, the product is a frame structure with an opening on one side, and is in the shape of a "concave" character, wherein the middle is hollowed out, and the shape of the hollowed-out part in the middle is Ω-shaped, and both sides of the opening of the product extend inwardly to form a convex block.

[0013] Preferably, the single side width of the product is 0.8-1.5 mm.

[0014] Preferably, the flange of the punch die frame-shaped structure protrudes outward, and its size corresponds to the opening on one side of the product.

[0015] Preferably, the size of the second punch die is larger than that of the first punch die.

[0016] Preferably, the four corners of the square frame structure of the double punch die are rounded.

[0017] Preferably, the three-punch die is in the shape of a rectangular frame.

[0018] Preferably, the first punching die and the second punching die are provided in plurality and arranged in a line.

[0019] Preferably, the first punching die, the second punching die and the third punching die are all arranged on the punching die of the die-cutting device, and all have raised blades.

[0020] A method for punching a bell-mouth double-sided adhesive product, using the above-mentioned die assembly for punching, specifically comprising the following steps:

[0021] (1) The raw material strip with the carrier film, the double-sided adhesive tape and the auxiliary release film is passed through a die-cutting machine and punched out in one step by a punching die to punch out the internal contour of the product;

[0022] (2) Remove the auxiliary release film and the waste inside the product, attach a new auxiliary release film, and perform two-step punching with a two-punch die to punch out the outer contour of the product;

[0023] (3) Remove the auxiliary release film and the external waste of the product, then attach a new auxiliary release film, and perform three-step punching through a three-punch die to punch the shape and positioning holes of the product-bearing release film;

[0024] (4) After removing the waste material of the product-bearing release film frame and the waste material of the positioning hole, the finished product is obtained.

[0025] The original punching method is to use a punching die that is completely consistent with the internal contour of the product for punching according to the contour of the product, and in order to facilitate the waste discharge after the punching, a horizontal waste discharge line is added to the waste discharge area of ​​the inner frame at the punching position. Although this is conducive to the waste discharge after the punching, when discharging strip waste, due to the very small size and irregular shape at the opening position of the product, displacement and breakage will occur during waste discharge, and the defective rate is high.

[0026] The present invention changes the existing Ω-shaped open unclosed single punching die into a closed frame structure with a flange, changes the square double punching die with an open side into a closed frame structure, and then punches the single punching die first, and then punches the second punching die, so that a trumpet-mouth double-sided adhesive product is formed between the two. Since both the single punching die and the second punching die are closed structures, after the first punching, closed internal double-sided adhesive waste is formed and discharged first, so it is not easy to cause the problem of breaking and displacement of the a area and the b area, and effectively solves the problem that the opening edge of the trumpet-mouth double-sided adhesive product is broken and displaced during the punching process (mainly in the waste discharge process), effectively guarantees the punching process forming rate of such products, reduces the defective rate, and greatly improves the product production level and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of a single bell-mouth double-sided adhesive product of the present invention;

[0028] Figure 2 , 3 It is a schematic diagram of the bell mouth double-sided adhesive product after punching of the present invention;

[0029] Figure 4 , 5 6 is a schematic diagram of a first punching die, a second punching die and a third punching die of an existing punching die set;

[0030] Figure 7 Schematic diagram of the a and b areas of the trumpet-shaped double-sided adhesive product of the present invention that are easily broken;

[0031] Figure 8 , 9 10 is a schematic diagram of a first punching die, a second punching die and a third punching die of a punching die set of the present invention;

[0032] Fig.11 It is a schematic diagram of the combination of the first punching die and the second punching die of the present invention;

[0033] In the figure: 1- one punch cutting die; 2- two punch cutting die; 3- three punch cutting die; 4- product. DETAILED DESCRIPTION

[0034] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1 As shown in the figure, it is a double-sided adhesive product used for the speaker of a mobile phone. Its shape is roughly concave. The product is very small, with a single-side width of only about 1mm. In order to increase the processing capacity of the product, multiple products will be processed together during processing. For example, there are 7 double-sided adhesive products on a carrier film. Figure 2 , 3 As shown, a release film is used to carry the double-sided adhesive, and positioning holes are designed on the release film.

[0036] The existing processing method is to first punch out the inner frame of the double-sided adhesive tape (one punch), such as Figure 4 As shown, the punched inner frame is Ω-shaped; then the outer frame is punched (second punch), and the outer frame is an open square, as shown in FIG. Figure 5 As shown; Finally, the shape and positioning holes of the release film are punched (three punches), as shown Figure 6 As shown in the figure, at the first punching position, a horizontal waste discharge line is formed in the waste discharge area of ​​the inner frame to facilitate the waste discharge after the first punching and cutting. At this time, the width of the product glue area is only 1.04mm, which is very easy to produce the following problems during waste discharge: Figure 7 The a region and the b region shown are torn apart, and are prone to displacement of the a region and the b region.

[0037] Since a punch may break or shift when discharging waste, the defective rate is particularly high, and the operator needs to spend too much time on debugging during production. In order to solve this technical problem, the present invention provides a knife die assembly for punching bell-mouth double-sided adhesive products.

[0038] The die assembly includes a first die 1 for punching the inner contour of a product 4, a second die 2 for punching the outer contour of the product 4, and a third die 3 for punching the shape of a release film and a positioning hole of the product 4.

[0039] like Figure 8 , 9 10. The first punch die 1 is a closed frame structure with a flange, and the second punch die 2 is a closed square frame structure; the outline of the frame structure of the first punch die 1 is consistent with the inner edge outline of the product 4; the outline of the square frame structure of the second punch die 2 is consistent with the outer edge outline of the product 4; after the second punch die 2 and the first punch die 1 are combined for punching, the product 4 is formed between the inner side of the second punch die 2 and the outer side of the first punch die 1.

[0040] Among them, the flange of the frame-shaped structure of the first punching die 1 protrudes outward, and its size corresponds to the opening on one side of the product 4. The size of the second punching die 2 is larger than that of the first punching die 1. The four corners of the square structure of the second punching die 2 are rounded. The third punching die 3 is in the shape of a rectangular frame. There are multiple first punching die 1 and second punching die 2, which are arranged in a line. The first punching die 1, the second punching die 2 and the third punching die 3 are all arranged on the punching die of the die-cutting device, and all have raised blades.

[0041] When the above-mentioned die cutting assembly is used for punching, the following steps are specifically included:

[0042] (1) The raw material strip with the carrier film, the double-sided adhesive tape and the auxiliary release film is passed through a die-cutting machine and punched out in one step by a punching die 1 to punch out the internal contour of the product 4;

[0043] (2) Remove the auxiliary release film and the waste inside the product 4, attach a new auxiliary release film, and perform two-step punching with the two-punch die 2 to punch out the outer contour of the product 4;

[0044] (3) The auxiliary release film and the external waste of the product 4 are removed, and a new auxiliary release film is attached, and three-step punching is performed by the three-punch die 3 to punch the shape and positioning holes of the product 4 carrying the release film;

[0045] (4) After removing the waste material of the frame of the release film and the waste material of the positioning hole of product 4, the finished product is obtained.

[0046] The specific die-cutting and waste discharge process adopts existing technology.

[0047] The present invention changes the existing Ω-shaped open single punching die 1 into a closed frame structure with a flange, and changes the square double punching die 2 with an open side into a closed frame structure, and then punches the single punching die 1 first, and then punches the double punching die 2, to form a trumpet-mouthed double-sided adhesive product 4 between the two. Since both the single punching die 1 and the double punching die 2 are closed structures, after one punching, closed internal double-sided adhesive waste is formed and discharged first, so it is not easy to cause the problem of breaking and displacement of area a and area b, and effectively solves the problem of the opening edge of the trumpet-mouthed double-sided adhesive product 4 being broken and displaced during the punching process (mainly in the waste discharge process), effectively guarantees the punching process forming rate of this type of product 4, reduces the defective rate, and greatly improves the production level and production efficiency of the product 4.

[0048] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A die cutter assembly for punching a bell-mouth double-sided adhesive product, the die cutter assembly comprising a first die cutter for punching the inner contour of the product, a second die cutter for punching the outer contour of the product, and a third die cutter for punching the shape of the release film and the positioning hole of the product, characterized in that: The first punching die is a closed frame structure with a flange, and the second punching die is a closed square frame structure; The outline of the frame structure of the punch die is consistent with the inner edge outline of the product; The outline of the square frame structure of the two-punch cutting die is consistent with the outer edge outline of the product; After the two punching cutter dies and the one punching cutter die are combined for punching, the product is formed between the inner side of the two punching cutter dies and the outer side of the one punching cutter die; The product is a frame structure with an opening on one side, in the shape of a "concave" character, with a hollow in the middle, and the hollowed-out part in the middle is in the shape of an Ω, and both sides of the opening of the product extend inward to form a convex block; The single side width of the product is 0.8-1.5mm; The flange of the punch die frame-shaped structure protrudes outward, and its size corresponds to the opening on one side of the product.

2. A die cutter assembly for punching bell-mouth double-sided adhesive products according to claim 1, characterized in that: The size of the second punching die is larger than that of the first punching die.

3. A die cutter assembly for punching bell-mouth double-sided adhesive products according to claim 1, characterized in that: The four corners of the square frame structure of the double punch die are rounded.

4. A die cutter assembly for punching bell-mouth double-sided adhesive products according to claim 1, characterized in that: The three-punch cutter die is in the shape of a rectangular frame.

5. The die cutter assembly for punching bell-mouth double-sided adhesive products according to claim 1, characterized in that: There are a plurality of the first punching cutter dies and the second punching cutter dies, which are arranged in a line.

6. A die cutter assembly for punching bell-mouth double-sided adhesive products according to any one of claims 1 to 5, characterized in that: The first punching die, the second punching die and the third punching die are all arranged on the punching die of the die-cutting device and are all convex blades.

7. A punching method for a bell-mouth double-sided adhesive product, characterized in that: The die cutting method according to claim 6 is carried out by punching, which specifically comprises the following steps: (1) The raw material strip with the carrier film, double-sided adhesive tape and auxiliary release film is passed through a die-cutting machine and punched out in one step through a punching die to punch out the internal contour of the product; (2) Remove the auxiliary release film and the waste inside the product, attach a new auxiliary release film, and perform two-step punching with a two-punch die to punch out the outer contour of the product; (3) Remove the auxiliary release film and the external waste of the product, then attach a new auxiliary release film, and perform three-step punching through a three-punch die to punch the shape and positioning holes of the product-bearing release film; (4) After removing the waste material of the product-bearing release film frame and the waste material of the positioning hole, the finished product is obtained.

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