Manufacturing method of small-size sandwich type multilayer film product

Abstract

The invention discloses a manufacturing method of a small-size sandwich type multi-layer film product, which comprises the following steps of: punching a to-be-processed film at a first punching station to form a turnover line connected by a through hole and a breakpoint, covering a gauze at a gauze covering station, punching at a second punching station to form a cut edge in the length direction, and finally punching at a third punching station to form a cut edge in the length direction. The method comprises the following steps: cutting a to-be-treated membrane material at a first punching station, then punching at a third punching station to form a cut edge in the width direction, folding the to-be-treated membrane material along a folding line at a folding station to enable the foam rubber to be attached to the gauze, finally removing a bottom supporting protective film of the to-be-treated membrane material at a combination station, and transferring a punched membrane material assembly to a bearing release film to obtain a required membrane material product. By adopting the manufacturing method, operation and alignment can be easier, the influence of fast after-tack of the adhesive layer can be reduced, and the product yield can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of film material punching, and in particular to a method for manufacturing a small-size sandwich-type multi-layer film material product. Background Art

[0002] The membrane product used for sealing the sound hole of the microphone generally includes hand-tear film, foam glue, mesh, foam glue and release film from top to bottom. When in use, after tearing off the top layer of hand-tear film, paste the second layer of foam glue to the corresponding position of the microphone, then tear off the bottom layer of release film, and finally paste the corresponding accessories of the microphone to the fourth layer of foam glue. The component between the two layers of foam glue is mesh. In the prior art, the foam glue component is manufactured by directly punching the outer frame. Specifically, during manufacturing, first punch out circular holes in the hand-tear film and the second layer of foam glue at the same time, and also punch out circular holes in the fourth layer of foam glue, then cover the fourth layer of foam glue with mesh, and then cover the second layer of foam glue and hand-tear film on the mesh, and then punch from the fourth layer of foam glue towards the hand-tear film, punch the second layer of foam glue, mesh, and the fourth layer of foam glue into a square, and at the same time punch out the hand-tear film into a shape with a protruding hand-tear portion. The problem with this punching method is that it is easy to misalign the second layer of foam glue and the hand-tear film when covering the mesh, and when punching from the fourth layer of foam glue toward the hand-tear film, due to the small size of the product, many film layers, and double-layer foam glue, the glue layer sticks back quickly, resulting in the product being easily taken away when the outer frame waste is discharged, resulting in low product yield. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and provide a method for manufacturing a small-sized sandwich multilayer film product, which can be easier to operate and align, and can reduce the influence of fast re-adhesion of the adhesive layer and improve the product yield.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] Technical solution 1: A method for manufacturing a small-sized sandwich multilayer membrane product, wherein the membrane product is, from top to bottom, a hand-tearable film, a first foam glue, a mesh, a second foam glue and a supporting release film, and the hand-tearable film, the first foam glue and the second foam glue are provided with through holes that pass through in the up and down directions, and the first foam glue, the mesh and the second foam glue are rectangular, and the hand-tearable film includes a covering portion that is consistent with the shape of the first foam glue, the mesh and the second foam glue and a hand-tearable portion that extends from the covering portion and is rectangular, and is characterized in that it includes the following steps: S10: performing the first punching and waste removal on the prefabricated membrane material to be processed at a punching station, forming through holes on the hand-tearable film, the first foam glue and the second foam glue of the membrane material to be processed, and forming through holes on the membrane material to be processed A folding line connected by breakpoints is formed in the middle position in the width direction; S20: the mesh is covered to the second foam glue at the covering yarn station; S30: the second punching and waste discharge is performed at the second punching station, and a cut edge along the length direction of the membrane material to be processed is formed on the hand-torn film, the first foam glue, the mesh, and the second foam glue; S40: the third punching and waste discharge is performed at the third punching station, and a cut edge along the width direction of the membrane material to be processed is formed on the hand-torn film, the first foam glue, the mesh, and the second foam glue; S50: the membrane material to be processed is folded along the folding line at the folding station, so that the first foam glue is attached to the mesh; S60: the bottom protective film of the membrane material to be processed is removed at the assembly station, and the hand-torn film, the first foam glue, the mesh, and the second foam glue are transferred to the carrier The bottom layer of the prefabricated film to be processed is a bottom protective film, and is divided into an upper punching portion and a lower punching portion along the width direction, and the folding line is formed between the upper punching portion and the lower punching portion by the first punching and waste discharge; the upper punching portion is provided with two upper punching film layers along the width direction, and the upper punching film layers are, from top to bottom, a mist film, a foam glue and a hand-torn release film, wherein the foam glue and the hand-torn release film correspond to the first foam glue and the hand-torn film of the film product; the lower punching portion is provided with two lower punching film layers along the width direction, and the lower punching film layers are, from top to bottom, a mist film, a foam glue and a process release film, wherein the foam glue corresponds to the second foam glue of the film product; in the first During the second punching and waste discharge, the mist film, foam glue and hand-tear release film of the upper punching film layer are punched and discharged to form through holes, and the mist film, foam glue and process release film of the lower punching film layer are punched and discharged to form through holes; in the S20, the mist film on the two lower punching film layers of the lower punching part of the film material to be processed is removed, and the mesh is covered to the lower punching part, and the coverage of the mesh does not exceed the folding line; in the S30, during the second punching and waste discharge, the cutting edges of the upper punching part along the length direction include the first cutting edge, the second cutting edge, the third cutting edge, the fourth cutting edge, the fifth cutting edge and the sixth cutting edge in sequence in the width direction, and the cutting edges of the lower punching part along the length direction include the seventh cutting edge, the eighth cutting edge, the ninth cutting edge and the tenth cutting edge in sequence in the width direction;The first and sixth cutting edges for punching the mist film, foam glue and hand-tear release film correspond to the outer edge of the hand-tear part of the hand-tear film in the width direction, the second and fifth cutting edges for punching the mist film and foam glue correspond to the edge of the hand-tear part of the first foam glue close to the hand-tear film in the width direction, the third and fourth cutting edges for punching the mist film, foam glue and hand-tear release film correspond to the inner edge of the covering part of the hand-tear film in the width direction; the seventh and tenth cutting edges for punching the mesh, foam glue and process release film correspond to the edge of the hand-tear part of the second foam glue away from the hand-tear film in the width direction, the eighth and ninth cutting edges for punching the mesh, foam glue and process release film correspond to the edge of the second foam glue away from the hand-tear film in the width direction, The glue is close to the edge of the hand-tearable part of the hand-tearable film in the width direction; in the S40, when the third punching and waste discharge is performed, the cutting edges of the upper punching part along the width direction include the 11th cutting edge and the 12th cutting edge in sequence along the length direction, and the cutting edges of the lower punching part along the width direction include the 13th cutting edge and the 14th cutting edge in sequence along the length direction; the 11th cutting edge and the 12th cutting edge respectively punch the edges of the fog film, foam glue, hand-tearable release film and bottom protective film on both sides of the length direction corresponding to the hand-tearable film; the 13th cutting edge and the 14th cutting edge respectively punch the edges of the fog film, foam glue, process release film and bottom protective film on both sides of the length direction corresponding to the covering part of the hand-tearable film. ;

[0006] Technical solution 2 based on technical solution 1: In S10, corresponding to the position of the through hole punched on the film material to be processed in the length direction of the film material to be processed, a guide post hole is also punched at the edge position in the width direction of the film material to be processed; the guide post hole is used to insert the guide post vertically arranged on the punching equipment into the guide post hole for positioning when the film material to be processed is punched and discharged at the second punching station and the third punching station.

[0007] Technical solution three based on technical solution two: In S10, during each punching and waste discharge, the guide pins on the punching and cutting equipment are inserted into the guide pin holes formed during the previous punching and waste discharge for positioning, so that the distance between adjacent guide pin holes on the membrane material to be processed in the length direction is consistent.

[0008] Technical solution four based on technical solution three: in S10, after each punching and waste discharge, four through holes arranged along the width direction and aligned in the length direction are formed on the film material to be processed, as well as four guide post holes aligned in the length direction with the through holes and arranged along the width direction, wherein two guide post holes are respectively located at the edge positions of the upper punching part in the width direction, and the other two guide post holes are respectively located at the edge positions of the lower punching part in the width direction.

[0009] Technical solution five based on technical solution four: before performing the second punching and waste discharge in S30, the old fog film on the upper punching portion of the film material to be processed is replaced with a new fog film.

[0010] Technical solution six based on technical solution five: In S60, the two parts of the bottom protective film corresponding to the upper punching part and the lower punching part in the film material to be processed are separated along the folding line.

[0011] It can be seen from the above description of the present invention that, compared with the prior art, the present invention has the following beneficial effects:

[0012] Compared with the existing method of directly punching the outer frame of the product, the method for punching a small-sized sandwich multi-layer film product provided by the present invention divides the product into two parts for step-by-step punching and pre-setting a folding line, so that it is easier to align the foam glue when covering the mesh, and can reduce the impact of the rapid re-adhesion of the glue layer, thereby improving the product yield.

[0013] Among them, the prefabricated membrane material to be processed is divided into an upper punching part and a lower punching part by a folding line, so as to facilitate the punching of the hand-torn membrane, the first foam glue part and the second foam glue part, and the mesh part respectively, and then the two parts are combined by the folding line. The setting of the folding line can ensure that the two parts are easier to align when folding, and because the folding line and the through hole are formed at the same time during the first punching and waste discharge, the position of the folding line is strictly corresponding to the position of the through hole, which further improves the accuracy of the alignment of the two parts after folding.

[0014] Afterwards, the film material to be processed is punched and discharged in the length and width directions respectively, and since the upper punching part is provided with two corresponding upper punching film layers, and the lower punching part is provided with two corresponding lower punching film layers, when trimming along the length direction, the parts between the two upper punching film layers and the two lower punching film layers can be more easily discharged. Then trimming along the width direction is performed, and there is less area for waste discharge after punching. Compared with the prior art, since the punching is performed from the fourth layer of foam glue toward the hand-tearable film, due to the small size of the product, the large number of film layers and the double layer of foam glue, the glue layer re-adheres quickly, and the product is easily taken away when the outer frame waste is discharged, this method reduces the influence of the glue layer re-adherence through a reasonable punching sequence and position arrangement, and avoids the situation of taking away the product when discharging the waste.

[0015] In addition, during the first punching and waste discharge, guide post holes are punched and formed on the film material to be processed. By inserting the guide posts vertically arranged on the punching and waste discharge equipment into the guide post holes, the position of the film material to be processed can be accurately limited in the punching and waste discharge operations of the second and third punching stations to prevent displacement. Moreover, during each punching and waste discharge, the guide posts on the punching and waste discharge equipment are inserted into the guide post holes formed by the last punching and waste discharge, and the film material to be processed is positioned synchronously, so that the distance between adjacent guide post holes on the film material to be processed in the length direction is kept consistent. With such an arrangement, in the subsequent third punching and waste discharge process, the trimming edges along the width direction can be accurately aligned. At the same time, four guide post holes are provided corresponding to each group of through holes or products. These four guide post holes are punched and formed simultaneously with the four through holes, so that the jump distance between two adjacent products can be strictly controlled. Moreover, since the guide post holes are formed simultaneously in the upper punching and waste discharge part, the upper punching and waste discharge part and the lower punching and waste discharge part can further ensure that the punched components are aligned with each other when folding.

[0016] In addition, timely replacement of new fog film can reduce the impact of adhesive layer re-adhesion. The new fog film can maintain good isolation performance and prevent excessive adhesion of foam glue during punching and cutting, thus ensuring the smooth progress of subsequent punching and cutting operations.

[0017] The folding lines formed by punching can be easily separated due to the structure of breakpoint connection, which facilitates the subsequent transfer of the components to the carrier release film. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 The structure of the membrane product mentioned in the background technology of the present invention;

[0020] Figure 2 An array diagram of the first punching and waste removal in the punching method involved in an embodiment of the present invention;

[0021] Figure 3 for Figure 2 The schematic cross-sectional view of the first punching and waste removal;

[0022] Figure 4 An array diagram of the second punching and waste removal in the punching method involved in an embodiment of the present invention;

[0023] Figure 5 for Figure 4 The cross-sectional diagram of the second punching and waste removal;

[0024] Figure 6 An array diagram of the third punching and waste removal in the punching method involved in an embodiment of the present invention;

[0025] Figure 7 for Figure 6 Schematic diagram of the cross section of the third punching and waste discharge.

[0026] Description of main reference numerals:

[0027] Hand-tearable film 1; first foam glue 2; mesh 3; second foam glue 4; supporting release film 5; through hole 6; covering part 7; hand-tearable part 8; folding line 9; bottom protective film 10; upper punching part 11; lower punching part 12; upper punching film layer 13; lower punching film layer 14; mist film 15; foam glue 16; hand-tearable release film 17; process release film 18; guide post hole 19;

[0028] a first cutting edge 21; a second cutting edge 22; a third cutting edge 23; a fourth cutting edge 24; a fifth cutting edge 25; a sixth cutting edge 26; a seventh cutting edge 27; an eighth cutting edge 28; a ninth cutting edge 29; a tenth cutting edge 210; an eleventh cutting edge 211; a twelfth cutting edge 212; a thirteenth cutting edge 213; and a fourteenth cutting edge 214. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0031] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0032] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0033] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0034] The embodiment of the present invention relates to a method for manufacturing a small-sized sandwich multilayer film product, referring to Figure 1 The membrane product comprises, from top to bottom, a hand-tearable film 1, a first foam glue 2, a mesh 3, a second foam glue 4 and a supporting release film 5, and the hand-tearable film 1, the first foam glue 2, and the second foam glue 4 are provided with a through hole 6 which passes through in the up and down directions, and the first foam glue 2, the mesh 3, and the second foam glue 4 are rectangular, and the hand-tearable film 1 comprises a covering portion 7 which is consistent with the shape of the first foam glue 2, the mesh 3, and the second foam glue 4, and a hand-tearable portion 8 which extends from the covering portion 7 and is rectangular.

[0035] In this embodiment, the first foam glue 2, the mesh 3, the second foam glue 4 and the covering portion 7 of the hand-tearable film 1 are roughly square, and their corners can be rounded. The hand-tearable portion 8 of the hand-tearable film 1 is roughly rectangular, and its corners can be rounded.

[0036] The manufacturing method involved in the embodiment of the present invention specifically includes the following steps:

[0037] S10: performing a first punching and cutting of the prefabricated film material to be processed at a punching station, forming through holes 6 on the hand-tear film 1, the first foam glue 2, and the second foam glue 4 of the film material to be processed, and forming a folding line 9 with breakpoints connected in the middle of the width direction of the film material to be processed;

[0038] S20: Covering the mesh yarn 3 to the second foam glue 4 at the yarn covering station;

[0039] S30: performing a second punching and waste removal at the second punching station, and forming a cut edge along the length direction of the film material to be processed on the hand-tear film 1, the first foam glue 2, the mesh 3, and the second foam glue 4;

[0040] S40: performing a third punching and waste removal at the three-punching station, and forming a cutting edge along the width direction of the film material to be processed on the hand-tear film 1, the first foam glue 2, the mesh 3, and the second foam glue 4;

[0041] S50: folding the film material to be processed along the folding line 9 at the folding station, so that the first foam glue 2 is attached to the mesh 3;

[0042] S60: removing the bottom protective film 10 of the film material to be processed at the assembly station, and transferring the hand-tear film 1, the first foam glue 2, the mesh 3, and the second foam glue 4 to the supporting release film 5 to obtain a film material product.

[0043] Reference Figure 2-Figure 7 , which sequentially shows the punching arrays of the first punching, the second punching and the third punching in the manufacturing method involved in an embodiment of the present invention, and the corresponding punching knife depths.

[0044] First refer to Figure 2 and Figure 3 In the S10, the bottom layer of the prefabricated film material to be processed is a bottom protective film 10, and it is divided into an upper punching portion 11 and a lower punching portion 12 along the width direction, and the upper punching portion 11 and the lower punching portion 12 are separated by the first punching and waste discharge to form the folding line 9; the upper punching portion 11 is arranged with two upper punching film layers 13 along the width direction, and the upper punching film layers 13 are fog film 15, foam glue 16 and hand-tear release film 17 from top to bottom, wherein the foam glue 16 and the hand-tear release film 17 correspond to the first foam of the film material product Glue 2 and hand-tearable film 1; the lower punching portion 12 is arranged with two lower punching film layers 14 along the width direction, and the lower punching film layers 14 are respectively mist film 15, foam glue 16 and process release film 18 from top to bottom, wherein the foam glue 16 corresponds to the second foam glue 4 of the film product; during the first punching and waste discharge, the mist film 15, foam glue 16 and hand-tearable release film 17 of the upper punching film layer 13 are punched and discharged to form a through hole 6, and the mist film 15, foam glue 16 and process release film 18 of the lower punching film layer 14 are punched and discharged to form a through hole 6.

[0045] Furthermore, in S10, corresponding to the position of the through hole 6 formed by punching on the film material to be processed in the length direction of the film material to be processed, a guide post hole 19 is punched at the edge position in the width direction of the film material to be processed; the guide post hole 19 is used to insert the guide post vertically arranged on the punching equipment into the guide post hole 19 for positioning when the film material to be processed is punched and discharged at the second punching station and the third punching station. At the same time, in S10, each time the film material is punched and discharged, the guide post on the punching equipment is inserted into the guide post hole formed during the last punching and discharge for positioning, so that the distance between adjacent guide post holes on the film material to be processed in the length direction is consistent. With this arrangement, in the subsequent third punching and discharge process, it can be ensured that the cutting edges along the width direction can be accurately aligned. Specifically, in S10, after each punching and waste discharge, four through holes 6 arranged along the width direction and aligned in the length direction are formed on the film material to be processed, as well as four guide post holes 19 aligned in the length direction with the through holes 6 and arranged along the width direction, wherein two guide post holes 19 are respectively located at the edge positions of the upper punching portion 11 in the width direction, and the other two guide post holes 19 are respectively located at the edge positions of the lower punching portion 12 in the width direction.

[0046] In S20 , the mist film 15 on the two lower punched film layers 14 of the lower punched portion 12 of the film material to be processed is removed, and the mesh 3 is covered to the lower punched portion 12 , and the coverage range of the mesh 3 does not exceed the folding line 9 .

[0047] Next refer to Figure 4 and Figure 5 In S30, during the second punching and waste discharge, the cutting edges of the upper punching portion 11 along the length direction include the first cutting edge 21, the second cutting edge 22, the third cutting edge 23, the fourth cutting edge 24, the fifth cutting edge 25 and the sixth cutting edge 26 in sequence along the width direction, and the cutting edges of the lower punching portion 12 along the length direction include the seventh cutting edge 27, the eighth cutting edge 28, the ninth cutting edge 29 and the tenth cutting edge 210 in sequence along the width direction; the first cutting edge 21 and the sixth cutting edge 26 punch the mist film 15, the foam glue 16 and the hand-tear release film 17 corresponding to the outer edge of the hand-tear portion 8 of the hand-tear film 1 in the width direction, and the second cutting edge 22 and the fifth cutting edge 25 punch the mist film 15 , foam glue 16 corresponds to the edge of the hand-torn portion 8 of the first foam glue 2 close to the hand-torn film 1 in the width direction, the third cutting edge 23, the fourth cutting edge 24 punching the mist film 15, the foam glue 16 and the hand-torn release film 17 correspond to the inner edge of the covering portion 7 of the hand-torn film 1 in the width direction; the seventh cutting edge 27, the tenth cutting edge 210 punching the mesh 3, the foam glue 16 and the process release film 18 correspond to the edge of the hand-torn portion 8 of the second foam glue 4 away from the hand-torn film 1 in the width direction, the eighth cutting edge 28, the ninth cutting edge 29 punching the mesh 3, the foam glue 16 and the process release film 18 correspond to the edge of the hand-torn portion 8 of the second foam glue 4 close to the hand-torn film 1 in the width direction. Among them, before the second punching and waste discharge is performed in S30, the old mist film 15 of the upper punching portion 11 of the film material to be processed is replaced with a new mist film 15. Timely replacement of the new mist film 15 can reduce the influence of the adhesive layer back adhesion. The new mist film 15 can maintain good isolation performance and prevent the foam glue 16 from excessively sticking during the punching process, thereby ensuring the smooth progress of the subsequent punching operation.

[0048] Next refer to Figure 6 and Figure 7 In S40, during the third punching and waste discharge, the cutting edges of the upper punching portion 11 along the width direction include the eleventh cutting edge 211 and the twelfth cutting edge 212 in sequence along the length direction, and the cutting edges of the lower punching portion 12 along the width direction include the thirteenth cutting edge 213 and the fourteenth cutting edge 214 in sequence along the length direction; the eleventh cutting edge 211 and the twelfth cutting edge 212 respectively punch the mist film 15, the foam glue 16, the hand-tear release film 17 and the bottom protective film 10 corresponding to the two side edges of the hand-tear film 1 in the length direction; the thirteenth cutting edge 213 and the fourteenth cutting edge 214 respectively punch the mist film 15, the foam glue 16, the process release film 18 and the bottom protective film 10 corresponding to the two side edges of the covering part 7 of the hand-tear film 1 in the length direction.

[0049] In S50, a jig of corresponding shape may be provided, and the guide posts of the jig may be inserted into the guide post holes 19 of the bottom protective film 10. The jig may then be folded so that the film material to be processed is folded along the folding line 9, and the assembly obtained after punching by the upper punching part 11 is aligned with the assembly obtained after punching by the lower punching part 12 and then bonded together.

[0050] In S60, the two parts of the bottom protective film 10 corresponding to the upper punching part 11 and the lower punching part 12 in the film material to be processed can be separated along the folding line 9. Then, the bottom protective film 10 attached to the lower punching part 12 is first removed, and the attached component is transferred to the carrier release film 5, and then the bottom protective film 10 attached to the upper punching part 11 is removed, and the desired film product can be obtained. The folding line 9 formed by punching can be easily separated due to the breakpoint connection structure, which is convenient for the subsequent transfer of the component to the carrier release film 5.

[0051] Compared with the existing method of directly punching the outer frame of the product, the method for punching a small-sized sandwich multilayer film product provided by the present invention divides the product into two parts for step-by-step punching and pre-setting the folding line 9, so that the foam glue 16 is easier to align when covering the mesh 3, and can reduce the influence of the rapid re-adhesion of the glue layer, thereby improving the product yield.

[0052] Among them, the prefabricated film material to be processed is divided into an upper punching part 11 and a lower punching part 12 by a folding line 9, so as to facilitate the punching of the hand-torn film 1, part of the first foam glue 2 and part of the second foam glue 4 and the mesh 3 respectively, and then the two parts are combined by the folding line 9. The setting of the folding line 9 can ensure that the two parts are easier to align when folding, and because the folding line 9 and the through hole 6 are formed at the same time during the first punching and waste discharge, the position of the folding line 9 is strictly corresponding to the position of the through hole 6, which further improves the accuracy of the alignment of the two parts after folding.

[0053] Afterwards, the film material to be processed is punched and discharged in the length and width directions respectively, and since the upper punching portion 11 is provided with two upper punching film layers 13 corresponding to each other, and the lower punching portion 12 is provided with two lower punching film layers 14 corresponding to each other, when trimming along the length direction, the parts between the two upper punching film layers 13 and the two lower punching film layers 14 can be more easily discharged. Then trimming along the width direction is performed, and there is less area for waste discharge after punching. Compared with the prior art, since the punching is performed from the fourth layer of foam glue 16 toward the hand-tearable film 1, due to the small size of the product, the large number of film layers and the double layer of foam glue 16, the glue layer re-adheres quickly, and the product is easily taken away when the outer frame waste is discharged, the present method reduces the influence of the glue layer re-adherence through a reasonable punching sequence and position arrangement, and avoids the situation where the product is taken away when the waste is discharged.

[0054] In addition, during the first punching and waste discharge, a guide post hole 19 is punched and formed on the film material to be processed. By inserting the guide post vertically arranged on the punching equipment into the guide post hole 19, the position of the film material to be processed can be accurately limited during the punching and waste discharge operation of the second punching station and the third punching station to prevent it from being displaced. In addition, four guide post holes 19 are provided corresponding to each group of through holes 6 or products. These four guide post holes 19 are punched and formed simultaneously with the four through holes 6, so that the jump distance between two adjacent products can be strictly controlled. Moreover, since the guide post holes 19 are formed simultaneously on the upper punching part 11 and the lower punching part 12, the upper punching part 11 and the lower punching part 12 can further ensure that the punched components are aligned with each other when they are folded.

[0055] The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims

1. A method for manufacturing a small-sized sandwich multilayer film product, wherein the film product comprises, from top to bottom, a hand-tearable film (1), a first foam glue (2), a mesh (3), a second foam glue (4) and a supporting release film (5), and the hand-tearable film (1), the first foam glue (2) and the second foam glue (4) are provided with a through hole (6) extending in the vertical direction, the first foam glue (2), the mesh (3) and the second foam glue (4) are rectangular, the hand-tearable film (1) comprises a covering portion (7) having the same shape as the first foam glue (2), the mesh (3) and the second foam glue (4) and a hand-tearable portion (8) extending from the covering portion (7) and having a rectangular shape, wherein: The following steps are involved: S10: performing a first punching and cutting of the prefabricated film material to be processed at a punching station to remove waste, forming through holes (6) on the hand-tear film (1), the first foam glue (2), and the second foam glue (4) of the film material to be processed, and forming a folding line (9) connected by breakpoints at the middle position of the film material to be processed in the width direction; S20: Covering the mesh yarn (3) with the second foam glue (4) at the yarn covering station; S30: performing a second punching and waste removal at the second punching station, and forming a cut edge along the length direction of the film material to be processed on the hand-tearable film (1), the first foam glue (2), the mesh (3), and the second foam glue (4); S40: performing a third punching and waste removal at the three-punching station, and forming a cutting edge along the width direction of the film material to be processed on the hand-torn film (1), the first foam glue (2), the mesh (3), and the second foam glue (4); S50: folding the film material to be processed along the folding line (9) at the folding station so that the first foam glue (2) is attached to the mesh (3); S60: removing the bottom protective film (10) of the film material to be processed at the assembly station, and transferring the hand-tear film (1), the first foam glue (2), the mesh (3), and the second foam glue (4) to the supporting release film (5) to obtain a film material product; in, In the S10, the bottom layer of the prefabricated membrane material to be processed is a bottom protective film (10), and it is divided into an upper punching portion (11) and a lower punching portion (12) along the width direction, and the folding line (9) is formed between the upper punching portion (11) and the lower punching portion (12) by the first punching and waste discharge; the upper punching portion (11) is provided with two upper punching film layers (13) along the width direction, and the upper punching film layers (13) are respectively mist film (15), foam glue (16) and hand-tear release film (17) from top to bottom, wherein the foam glue (16) and the hand-tear release film (17) correspond to the first foam glue (2) and the hand-tear release film (17) of the membrane material product. Film tearing (1); the lower punching portion (12) is provided with two lower punching film layers (14) along the width direction, wherein the lower punching film layers (14) are, from top to bottom, fog film (15), foam glue (16) and process release film (18), wherein the foam glue (16) corresponds to the second foam glue (4) of the film product; during the first punching and waste discharge, the fog film (15), foam glue (16) and hand-tear release film (17) of the upper punching film layer (13) are punched and discharged to form a through hole (6), and the fog film (15), foam glue (16) and process release film (18) of the lower punching film layer (14) are punched and discharged to form a through hole (6); In the step S20, the mist film (15) on the two lower punched film layers (14) of the lower punched portion (12) of the film material to be processed is removed. The mesh (3) is covered to the lower punching portion (12), and the coverage of the mesh (3) does not exceed the folding line (9); In the S30, during the second punching and waste discharge, the cutting edges of the upper punching portion (11) along the length direction include the first cutting edge (21), the second cutting edge (22), the third cutting edge (23), the fourth cutting edge (24), the fifth cutting edge (25) and the sixth cutting edge (26) in sequence along the width direction, and the cutting edges of the lower punching portion (12) along the length direction include the seventh cutting edge (27), the eighth cutting edge (28), the ninth cutting edge (29) and the tenth cutting edge (210) in sequence along the width direction; the first cutting edge (21) and the sixth cutting edge (26) punch the mist film (15), the foam glue (16) and the hand-tearable release film (17) corresponding to the outer edges of the hand-tearable portion (8) of the hand-tearable film (1) in the width direction, and the second cutting edge (22) and the fifth cutting edge (25) punch the mist film (15), the foam glue ( 16) corresponds to the edge of the hand-tearable portion (8) of the first foam glue (2) close to the hand-tearable film (1) in the width direction; the third cutting edge (23) and the fourth cutting edge (24) punch out the mist film (15), the foam glue (16) and the hand-tearable release film (17) corresponding to the inner edge of the covering portion (7) of the hand-tearable film (1) in the width direction; the seventh cutting edge (27) and the tenth cutting edge (210) punch out the mesh (3), the foam glue (16) and the process release film (18) corresponding to the edge of the hand-tearable portion (8) of the second foam glue (4) away from the hand-tearable film (1) in the width direction; the eighth cutting edge (28) and the ninth cutting edge (29) punch out the mesh (3), the foam glue (16) and the process release film (18) corresponding to the edge of the hand-tearable portion (8) of the second foam glue (4) close to the hand-tearable film (1) in the width direction; In the S40, during the third punching and waste discharge, the cutting edges of the upper punching portion (11) along the width direction include an eleventh cutting edge (211) and a twelfth cutting edge (212) in sequence along the length direction, and the cutting edges of the lower punching portion (12) along the width direction include a thirteenth cutting edge (213) and a fourteenth cutting edge (214) in sequence along the length direction; the eleventh cutting edge (211) and the twelfth cutting edge (212) respectively punch the edges of the mist film (15), the foam glue (16), the hand-tear release film (17) and the bottom protective film (10) on both sides of the length direction corresponding to the hand-tear film (1); the thirteenth cutting edge (213) and the fourteenth cutting edge (214) respectively punch the edges of the mist film (15), the foam glue (16), the process release film (18) and the bottom protective film (10) on both sides of the length direction corresponding to the covering portion (7) of the hand-tear film (1).

2. A method for manufacturing a small-size sandwich multilayer film product as claimed in claim 1, characterized in that In S10, a guide post hole (19) is punched at an edge position in the width direction of the film material to be processed, corresponding to the position of the through hole (6) punched on the film material to be processed in the length direction of the film material to be processed; the guide post hole (19) is used to insert the guide post vertically arranged on the punching equipment into the guide post hole (19) for positioning when the film material to be processed is punched and discharged at the second punching station and the third punching station.

3. A method for manufacturing a small-size sandwich multilayer film product as claimed in claim 2, characterized in that In S10, each time the waste is punched and discharged, the guide pins on the punching equipment are inserted into the guide pin holes formed in the previous punching and discharge for positioning, so that the distances between adjacent guide pin holes on the film material to be processed in the length direction are consistent.

4. A method for manufacturing a small-size sandwich multilayer film product as claimed in claim 3, characterized in that In S10, after each punching and waste discharge, four through holes (6) arranged in the width direction and aligned in the length direction, and four guide post holes (19) aligned in the length direction with the through holes (6) and arranged in the width direction are formed on the film material to be processed, wherein two guide post holes (19) are respectively located at the edge positions of the upper punching part (11) in the width direction, and the other two guide post holes (19) are respectively located at the edge positions of the lower punching part (12) in the width direction.

5. A method for manufacturing a small-sized sandwich multilayer film product as claimed in claim 4, characterized in that: Before the second punching and waste discharge in S30, the old mist film (15) of the upper punching portion (11) of the film material to be processed is replaced with a new mist film (15).

6. A method for manufacturing a small-size sandwich multilayer film product as claimed in claim 5, characterized in that In S60, the two parts of the bottom protective film (10) corresponding to the upper punching part (11) and the lower punching part (12) in the film material to be processed are separated along the folding line (9).

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