A die-cutting method for co-knife products facilitating material separation

Abstract

The present invention relates to a die-cutting method for co-knife products that facilitates material separation, which includes first stacking a first carrier film, a second carrier film, and a raw material tape to be die-cut in sequence from bottom to top; then using a trimming die to perform trimming and punching on the raw material tape to be die-cut, and removing the side waste to obtain a trimmed tape; finally using a co-knife die to perform co-knife punching on the trimmed tape and the second carrier film, and then separating the first carrier film from the second carrier film, so that separated co-knife products are obtained on the first carrier film and the second carrier film respectively. Compared with the prior art, the present invention can achieve the rapid and efficient separation of co-knife products, avoid problems such as excessive labor costs and easy product breakage in manual transfer, and has a relatively small degree of modification to the structure of the existing punching device, so it has high applicability.

Description

Technical Field

[0001] The present invention belongs to the technical field of die-cutting processing, and relates to a die-cutting method for co-knife products that facilitates material separation. Background Art

[0002] In the die-cutting industry, for die-cut products with regular shapes, the co-knife punching method is usually adopted. Among them, co-knife punching means that after punching, the materials on both sides of the knife mark are used as final products. Taking rectangular materials as an example, a die mold as shown in Figure 1 is generally used to directly punch the raw material tape with the foam and the release film stacked directly, and the obtained products are as shown in Figure 2 Since co-knife punching eliminates product gaps and reduces material waste, it is beneficial to reduce production costs. At the same time, it also increases the number of products obtained by each punching and eliminates the waste discharging process, which is conducive to improving production capacity. However, in co-knife products, since the individual products are arranged closely, it is very unfavorable for downstream processing and use. Therefore, it is necessary to re-separate the products after punching to form a product structure as shown in Figure 3 The existing separation methods mostly use manual separation, which not only takes a long time and has a high labor cost, but also easily causes product breakage and deformation during the transfer process, which seriously affects the economic benefits of the enterprise. Summary of the Invention

[0003] The purpose of the present invention is to provide a die-cutting method for co-knife products that facilitates material separation, which is used to solve the problem that the obtained co-knife products are not easy to separate in the existing co-knife die-cutting process.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A die-cutting method for co-knife products that facilitates material separation includes the following steps:

[0006] 1) Stack the first carrier film, the second carrier film, and the raw material tape to be die-cut in sequence from bottom to top;

[0007] 2) Use a trimming die mold to perform trimming punching on the raw material tape to be die-cut, and remove the side waste materials to obtain a trimmed tape;

[0008] The trimming die mold includes a trimming die mold bottom plate, and a top trimming knife line and a bottom trimming knife line arranged side by side on the trimming die mold bottom plate; and the top trimming knife line and the bottom trimming knife line are respectively adapted to the shapes of the top side and the bottom side of the co-knife product;

[0009] That is, through this step, the top side and the bottom side of the raw material tape to be die-cut are trimmed to conform to the product shape;

[0010] 3) Use a common knife die to perform common knife punching on the trimmed material tape and the second carrier film, and then separate the first carrier film from the second carrier film, that is, separated common knife products are obtained on the first carrier film and the second carrier film respectively;

[0011] The common knife die includes a common knife die bottom plate and a plurality of common knife lines arranged side by side on the common knife die bottom plate. The common knife line is a closed knife line surrounded by a top knife line, a bottom knife line and a side knife line group;

[0012] During common knife punching, the top knife line and the bottom knife line are located outside the trimmed material tape and inside the first carrier film and the second carrier film, that is, only used for punching the second carrier film; the side knife line group is adapted to the shapes of both sides of the common knife product and is used for punching the trimmed material tape and the second carrier film;

[0013] That is, through this step, the left and right sides of the raw material tape to be die-cut are further trimmed to conform to the overall shape of the product;

[0014] Further, the side knife line group includes a pair of side knife lines arranged side by side;

[0015] Further, for a rectangular strip common knife die-cut product, the top trimming knife line and the bottom trimming knife line can be a pair of straight knife lines arranged in parallel; the side knife line group can be a pair of straight side knife lines arranged side by side; the top knife line and the bottom knife line can both be "U"-shaped knife lines and jointly form a rectangular common knife line with the side knife lines.

[0016] Further, there are 2 - 4 common knife lines provided on the common knife die bottom plate.

[0017] Further, the first carrier film includes a protective film, and the second carrier film includes a release film.

[0018] Further, the release film includes a PE release film, a PET release film, an OPP release film, a PC release film, a PS release film, a PMMA release film, a BOPP release film, a PE release film, a TPX release film, a PVC release film, a PTFE release film, a PET release film, a single-silicon release film, a Teflon release film, a polyphenylene ether release film, a polytetrafluoroethylene release film.

[0019] Further, the raw material tape to be die-cut includes a foam material tape.

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

[0021] 1) In the present invention, a first carrier film (protective film) is added to the bottom of the second carrier film (original release film), and a common die cutter with a closed knife line is used to obtain closely arranged common die products. One of the common die products is loaded on the second carrier film, and the other is loaded on the second carrier film through the first carrier film after punching and separation. Then, by the conventional separation method of pulling up the second carrier film or pulling down the first carrier film, adjacent common die products can be separated. This method can achieve the rapid and efficient separation of common die products, avoid problems such as high labor costs and easy product breakage in manual transfer, and has a relatively small modification to the structure of the existing punching device, so it has high applicability.

[0022] 2) In the common die cutter, the design that the top knife line and the bottom knife line extend beyond the trimmed strip makes part of the second carrier film (release film) extend beyond the product edge in the separated common die products, which is convenient for customers to use. Description of the Drawings

[0023] Figure 1 is a common die cutting knife die in the prior art;

[0024] Figure 2 is a schematic structural diagram of a common die cutting product;

[0025] Figure 3 is a schematic structural diagram of a common die cutting product after manual peeling;

[0026] Figure 4 is a process schematic diagram of a rectangular common die cutting method for facilitating material separation in the embodiment;

[0027] Figure 5 is a schematic structural diagram of a trimming knife die in the embodiment;

[0028] Figure 6 is a schematic structural diagram of a common die cutter in the embodiment;

[0029] Figure 7 is a schematic diagram of the common die product on the first carrier film after separation in the embodiment;

[0030] Figure 8 is a schematic diagram of the common die product on the second carrier film after separation in the embodiment;

[0031] Explanation of the marks in the figure:

[0032] 1 - First carrier film, 2 - Second carrier film, 3 - Raw material strip to be die cut, 4 - Trimming knife die, 401 - Trimming knife die bottom plate, 402 - Top trimming knife line, 403 - Bottom trimming knife line, 5 - Common die cutter, 501 - Common die cutter bottom plate, 502 - Common die knife line, 5021 - Top knife line, 5022 - Bottom knife line, 5023 - Straight side knife line. Detailed Embodiment

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and gives the detailed implementation manner and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0034] Embodiment:

[0035] As Figure 4 shown, a die-cutting method for a rectangular co-knife product facilitating material separation includes the following steps:

[0036] S1: Stack the first carrier film 1, the second carrier film 2, and the raw material tape to be die-cut 3 in sequence from bottom to top;

[0037] S2: Use a trimming die 4 to perform trimming and punching on the raw material tape to be die-cut 3, and remove the side waste to obtain a trimmed tape; among them, the structure of the used trimming die 4 is as Figure 5 shown, including a trimming die bottom plate 401, and a top trimming knife line 402 and a bottom trimming knife line 403 arranged in parallel on the trimming die bottom plate 401; the top trimming knife line 402 and the bottom trimming knife line 403 are a pair of straight knife lines arranged in parallel; through this step, the upper and lower sides of the raw material tape to be die-cut 3 are cut to conform to the overall shape of the product;

[0038] S3: Use a co-knife die 5 to perform co-knife punching on the trimmed tape and the second carrier film 2, and the structure of the used co-knife die 5 is as Figure 6 shown, including a co-knife die bottom plate 501 and three co-knife lines 502 arranged in parallel on the co-knife die bottom plate 501, where the co-knife line 502 includes a "U"-shaped top knife line 5021 and a bottom knife line 5022, and a pair of straight side knife lines 5023 arranged in parallel together to form a rectangular closed knife line; and during co-knife punching, the top knife line 5021 and the bottom knife line 5022 are located outside the trimmed tape, inside the first carrier film 1 and the second carrier film 2, that is, only used to punch the second carrier film 2; the side knife line group is adapted to the shapes of both sides of the co-knife product and is used to punch the trimmed tape and the second carrier film 2;

[0039] Through this step, the left and right sides of the raw material tape to be die-cut 3 are further cut to conform to the overall shape of the product;

[0040] S4: Pull down the first carrier film 1 to separate the first carrier film 1 from the second carrier film 2, that is, separated co-knife products are obtained on the first carrier film 1 and the second carrier film 2 respectively, as Figure 7 and Figure 8 shown.

[0041] Specifically, the first carrier film 1 is a protective film, the second carrier film 2 is a PE release film, and the raw material tape to be die-cut 3 is a foam tape.

[0042] The above description of the embodiments is provided to enable those of ordinary skill in the art to understand and use the invention. 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 efforts. Therefore, the present invention is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present invention according to the disclosure of the present invention should be within the protection scope of the present invention.

Claims

1. A die-cutting method for a co-knife product facilitating material separation, characterized in that, The method includes the following steps: 1) Stack the first carrier film (1), the second carrier film (2), and the raw material tape to be die-cut (3) sequentially from bottom to top; 2) Use a trimming die (4) to perform trimming and punching on the raw material tape to be die-cut (3), and remove the side waste to obtain a trimmed tape; the trimming die (4) includes a trimming die bottom plate (401), and a top trimming knife line (402) and a bottom trimming knife line (403) arranged side by side on the trimming die bottom plate (401); The top trimming knife line (402) and the bottom trimming knife line (403) are respectively adapted to the shapes of the top side and the bottom side of the co-knife product; 3) Use a co-knife die (5) to perform co-knife punching on the trimmed tape and the second carrier film (2), and then separate the first carrier film (1) from the second carrier film (2), that is, separated co-knife products are obtained on the first carrier film (1) and the second carrier film (2) respectively; The co-knife die (5) includes a co-knife die bottom plate (501) and a plurality of co-knife lines (502) arranged side by side and spaced apart on the co-knife die bottom plate (501), and the co-knife line (502) is a closed knife line surrounded by a top knife line (5021), a bottom knife line (5022), and a side knife line group; during co-knife punching, the top knife line (5021) and the bottom knife line (5022) are located outside the trimmed tape, inside the first carrier film (1) and the second carrier film (2); the side knife line group is adapted to the shapes of both sides of the co-knife product; The side knife line group includes a pair of side knife lines (5023) arranged side by side; The side knife line (5023) is a straight knife line; The top knife line (5021) and the bottom knife line (5022) are both "U"-shaped knife lines, and together with the side knife line (5023), they form a rectangular co-knife line (502).

2. A die-cutting method for a co-knife product facilitating material separation according to claim 1, characterized in that, The top trimming knife line (402) and the bottom trimming knife line (403) are a pair of straight knife lines arranged in parallel.

3. The die-cutting method for a co-knife product facilitating material separation according to claim 1, wherein There are 2 - 4 co-knife lines (502) provided on the co-knife die bottom plate (501).

4. A method for die-cutting a co-knife product facilitating material separation according to claim 1, characterized in that, The first carrier film (1) includes a protective film, and the second carrier film (2) includes a release film.

5. A die-cutting method for a co-knife product facilitating material separation according to claim 4, characterized in that, The release film includes PE release film, PET release film, OPP release film, PC release film, PS release film, PMMA release film, BOPP release film, PE release film, TPX release film, PVC release film, PTFE release film, PET release film, single-silicon release film, Teflon release film, polyphenylene ether release film, polytetrafluoroethylene release film.

6. A die-cutting method for a common-knife product facilitating material separation according to claim 1, characterized in that, The raw material tape to be die-cut (3) includes a foam tape.

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