Production process of copper foil tape folded package PC with attached back glue component and its wrapping device

Abstract

The present invention relates to a production process of a copper foil tape folded package PC with an attached back adhesive component. The copper foil tape folded package PC with an attached back adhesive component sequentially includes a release film, a double-sided conductive adhesive, a single-sided copper foil conductive adhesive, and a PC block from bottom to top. Among them, the single-sided copper foil conductive adhesive has an extension portion protruding from the PC block, and the extension portion is bent along one side surface of the PC block and folded and attached to the upper surface of the PC block; the production process of the copper foil tape folded package PC with an attached back adhesive component includes first separately preparing a semi-finished product module and a PC module; the production process of the present invention first forms a semi-finished product module containing multiple semi-finished product units through multiple die-cutting processes. The semi-finished product unit contains a composite component of a release film, a conductive double-sided adhesive, and a single-sided copper foil conductive adhesive, and then modularly assembles the semi-finished product module and the PC module containing multiple PC blocks through a wrapping device. Dozens to hundreds of finished products can be assembled each time, so the production efficiency is high, the assembly accuracy is high, and the product stability is good.

Description

Technical Field:

[0001] The present invention relates to the technical field of die-cut products, specifically to the production equipment of bonding components for electronic products, and particularly to a production process and a wrapping device for a copper foil tape folding and wrapping a PC and attaching a back adhesive component. Background Art:

[0002] A large number of die-cut composite components are used in electronic components of electronic products such as mobile phones and tablet computers, and their parameters and assembly requirements are becoming more and more refined and precise. To meet the market demand, some electronic components need to use conductive copper foil, conductive adhesive, and PC blocks (i.e., block-shaped PC materials), and the conductive copper foil needs to wrap or partially wrap the PC block. The overall shape of this product is relatively irregular. On the one hand, it is difficult to achieve high-efficiency mass production using ordinary processes, and on the other hand, the product accuracy is not easy to control, and the qualified rate of finished products is relatively low. Therefore, it is necessary to develop an efficient production process and related production equipment or production lines used. Summary of the Invention:

[0003] The purpose of the present invention is to overcome the above deficiencies of the prior art and provide a production process and a wrapping device for a copper foil tape folding and wrapping a PC and attaching a back adhesive component.

[0004] The technical solution adopted by the present invention is: a production process for a copper foil tape folding and wrapping a PC and attaching a back adhesive component. The copper foil tape folding and wrapping a PC and attaching a back adhesive component sequentially includes a release film, a double-sided conductive adhesive, a single-sided copper foil conductive adhesive, and a PC block from bottom to top. Among them, the single-sided copper foil conductive adhesive has an extension part protruding from the PC block, and the extension part is bent along one side surface of the PC block and folded and attached to the upper surface of the PC block. The production process of the copper foil tape folding and wrapping a PC and attaching a back adhesive component includes the following steps:

[0005] Step 1: Compound the first transition film strip with a self-adhesive bottom film and the second transition film strip, with the self-adhesive bottom film facing upwards, and perform the first die-cutting using a first flat die-cutting mold to die-cut and form a first positioning hole, a first closed wire frame, a first edge line, and a first marking line on the three-layer composite strip; among them, the first closed wire frame is half-cut to the second transition film strip, and the first edge line is half-cut to the first transition film strip; then pull down the second transition film strip to remove the waste materials in the second transition film strip and within the first closed wire frame, that is, form a first transition film strip with a through hole corresponding to the shape of the first closed wire frame on the first transition film strip containing the bottom film; then compound a third transition film strip below; then remove the self-adhesive bottom film of the first transition film strip, and sequentially compound a release film strip, a double-sided conductive adhesive strip, and a fourth transition film strip on the first transition film strip;

[0006] Step 2: Perform the second die-cutting using a second flat die-cutting mold. The second die-cutting is a half-cut to the release film strip, forming multiple groups of second edge lines on the double-sided conductive adhesive strip, and die-cutting one side contour line of the double-sided conductive adhesive. Meanwhile, a second marking line is die-cut on the strip. The second edge lines are perpendicular to and intersect with the first closed wireframe. Then, the waste materials outside each group of second edge lines in the fourth transition film strip and the double-sided conductive adhesive strip are removed; that is, several double-sided conductive adhesive strip materials are formed on the surface of the release film strip. Then, a fifth transition film strip is laminated on the surface of the double-sided conductive adhesive strip material. At this time, the laminated strip, from bottom to top, is: the third transition film strip, the first transition film strip with a through-hole corresponding to the shape of the first closed wireframe, the release film strip, the double-sided conductive adhesive strip materials arranged at intervals, and the fifth transition film strip;

[0007] Step 3: Perform the third die-cutting using a third flat die-cutting mold. The third die-cutting is a half-cut to the first transition film strip; the third die-cutting forms the entire contour line of the double-sided conductive adhesive and the entire contour line of the release film, and forms a third edge line on the fifth transition film strip at a position corresponding to the first edge line. Then, the waste materials of the release film strip outside the contour line of the release film formed by the fifth transition film strip and the third closed wireframe blade attached thereto, as well as the waste materials of the double-sided conductive adhesive strip material, are removed. Then, the fifth transition film within the third closed wireframe is removed. At this time, the laminated strip, from bottom to top, is: the third transition film strip, the first transition film strip with a through-hole corresponding to the shape of the first closed wireframe, the release films arranged at intervals, and the double-sided conductive adhesives arranged at intervals. Then, a single-sided copper foil conductive adhesive strip and a sixth transition film strip are laminated on this laminated strip. The non-adhesive surface of the single-sided copper foil conductive adhesive strip is attached to the double-sided conductive adhesive, and the adhesive surface of the single-sided copper foil conductive adhesive strip is attached to the sixth transition film strip;

[0008] Step 4: Perform the fourth die-cutting using a fourth flat die-cutting mold. The fourth die-cutting depth is to cut off the single-sided copper foil conductive adhesive strip, forming the contour line of the single-sided copper foil conductive adhesive. The contour line of the single-sided copper foil conductive adhesive completely covers the double-sided conductive adhesive and partially covers the contour line of the release film. The contour line of the extension part of the single-sided copper foil conductive adhesive is perpendicular to the contour line of the release film, and the extension part crosses the vacant part formed by the first transition film strip and the first closed wireframe. Then, the waste materials of the single-sided copper foil conductive adhesive strip outside the contour line of the single-sided copper foil conductive adhesive attached to the sixth transition film strip are removed, and then the sixth transition film within the contour line of the single-sided copper foil conductive adhesive is removed. Then, a seventh transition film strip is laminated, forming, from bottom to top, the third transition film strip, the first transition film strip with a through-hole corresponding to the shape of the first closed wireframe, the release films arranged at intervals, the double-sided conductive adhesives arranged at intervals, the single-sided copper foil conductive adhesives arranged at intervals, and the seventh transition film strip, that is, forming a semi-finished laminated strip;

[0009] Step 5: Assemble the PC blocks. First, peel off the seventh transition film on the semi-finished product to expose the adhesive surface of the single-sided copper foil conductive adhesive. Then, bond one end of the PC block to the single-sided copper foil conductive adhesive. Next, fold the extended part of the single-sided copper foil conductive adhesive protruding from the PC block upward along one side surface of the PC block and bond the end of the extended part to the upper surface of the PC block to complete the assembly.

[0010] Furthermore, in the above production process, the semi-finished product tape formed in Step 4 is cut into semi-finished product modules according to an equidistant specification. Each semi-finished product module has several semi-finished product units including a release film, a double-sided conductive adhesive, and a single-sided copper foil conductive adhesive. At the same time, the semi-finished product module also has several first positioning holes formed by the first die-cutting.

[0011] Correspondingly, a PC module containing multiple PC blocks is prepared in advance. The number and position of the PC blocks on the PC module correspond to those of the semi-finished product units on the semi-finished product module. Second positioning holes corresponding to the first positioning holes on the semi-finished product module are provided on the PC block carrier film of the PC module.

[0012] During assembly, first peel off the third transition film on the semi-finished product module, position the semi-finished product module on the fixture by using the first positioning holes on the first transition film. Then, peel off the seventh transition film on the semi-finished product module to expose the adhesive surface of the single-sided copper foil conductive adhesive of the semi-finished product unit. Next, align the PC blocks on the PC module with the single-sided copper foil conductive adhesive, and use the second positioning holes on the PC block carrier film and the first positioning holes on the semi-finished product module to cooperate with the fixture for positioning so that the two are aligned and bonded. Then, peel off the PC block carrier film to form a semi-finished product to be wrapped. The semi-finished product to be wrapped thus forms, from bottom to top: the first transition film, the release films arranged at intervals, the double-sided conductive adhesives arranged at intervals, the single-sided copper foil conductive adhesives arranged at intervals, and the PC blocks; wherein the extended part of the single-sided copper foil conductive adhesive crosses the vacant part on the first transition film.

[0013] Then, place the semi-finished product to be wrapped on the wrapping device for bending and compounding: that is, perform positioning and placing of the semi-finished product to be wrapped on the wrapping device in sequence, press and limit the non-wrapped parts of the semi-finished product to be wrapped, bend and bond the extended part of the single-sided copper foil conductive adhesive along one side surface of the PC block, and then bend and bond the extended part along the upper surface of the PC block to complete the automatic wrapping operation.

[0014] Furthermore, in the above process, the wrapping device includes a main tabletop with a hollow part in the middle, a lower template, a middle template, and an upper template. The upper template is connected to a lifting drive mechanism. Among them, the lower template is provided with fifth positioning posts corresponding to the first positioning holes of the first transition film on the semi-finished product to be wrapped, and ejector pins corresponding to the extended parts of the single-sided copper foil conductive adhesive at the vacant parts of the first transition film on the semi-finished product to be wrapped; the middle template is provided with third positioning holes corresponding to the fifth positioning posts, and several through holes corresponding to the positions of the extended parts of the single-sided copper foil conductive adhesive on the semi-finished product to be wrapped and corresponding to the positions of the ejector pins of the lower template. A return spring is also provided between the middle template and the lower template; the lower surface of the upper template is provided with several through grooves parallel to and corresponding to each column of through holes on the middle template. The lower surface of the upper template is also provided with avoidance grooves corresponding to the positions of the PC block and the release film on the semi-finished product to be wrapped and perpendicular to the through grooves in direction; the wrapping device also includes several folding edge pressing plates corresponding to the through grooves of the upper template and a pressing plate drive mechanism for driving the folding edge pressing plates. The folding edge pressing plates are arranged at the hollow part of the main tabletop, and are located on the side of the middle template and higher than the middle template. The number and spacing of the folding edge pressing plates correspond to the through grooves of the upper template. When the upper template runs to the low point position, the folding edge pressing plates can be inserted into the corresponding through grooves; when the semi-finished product to be wrapped is positioned on the middle template, the extended parts of the single-sided copper foil conductive adhesive are suspended at the positions of the through holes, and are opposite to the ejector pins of the lower template below, while the positions where the release film and the PC block are located are on the upper surface of the middle template at one end of the through hole; when the upper template moves downward until its lower surface contacts the upper surface of the middle template, each through groove of the upper template is opposite to a column of through holes of the middle template, and the PC block and the release film on the semi-finished product to be wrapped are partially located in the avoidance grooves of the upper template, and the other part of the PC block protrudes from the through grooves of the upper template. Moreover, the extended parts of the single-sided copper foil conductive adhesive of the semi-finished product to be wrapped are still suspended in the through holes and are opposite to the through grooves; when the upper template further presses down the middle template, the middle template moves downward relative to the lower template, and then the ejector pins of the lower template move upward relatively, so as to push up the suspended extended parts of the single-sided copper foil conductive adhesive. The extended parts are bent upward along the side of the PC block and partially adhere to the side of the PC block. Then, the folding edge pressing plates move along the through grooves under the drive of their pressing plate drive mechanisms, and successively bend the extended parts of the single-sided copper foil conductive adhesive that are bent and erected further toward the upper surface of the PC block and make them adhere to the upper surface of the PC block, completing the wrapping operation; after completion, the folding edge pressing plates and the upper template are withdrawn in the reverse direction, and the product is taken out for transfer sticking and packaging.

[0015] Furthermore, after the folding edge pressing plates extend into the through grooves of the upper template, further pressure is applied to the folding edge pressing plates to press and adhere the extended parts of the single-sided copper foil conductive adhesive tightly to the upper surface of the PC block.

[0016] The present invention also provides a wrapping device applied to the above production process. The wrapping device includes a main tabletop with a hollow part in the middle, a lower template, a middle template, and an upper template. The upper template is connected to a lifting drive mechanism. Among them, the lower template is provided with fifth positioning posts corresponding to the first positioning holes of the first transition film on the semi-finished product to be wrapped, and is provided with ejector pins corresponding to the extended parts of the single-sided copper foil conductive adhesive at the vacant parts of the first transition film on the semi-finished product to be wrapped; the middle template is provided with third positioning holes corresponding to the fifth positioning posts, and is provided with several through holes corresponding to the positions of the extended parts of the single-sided copper foil conductive adhesive on the semi-finished product to be wrapped and corresponding to the positions of the ejector pins of the lower template. A return spring is also provided between the middle template and the lower template; the lower surface of the upper template is provided with several through grooves parallel to and corresponding to each column of through holes on the middle template, and the lower surface of the upper template is also provided with avoidance grooves whose positions correspond to the PC blocks and release films on the semi-finished product to be wrapped and whose directions are perpendicular to the through grooves; the wrapping device also includes several folding edge pressing plates corresponding to the through grooves of the upper template and a pressing plate drive mechanism for driving the folding edge pressing plates. The folding edge pressing plates are arranged at the hollow part of the main tabletop, and are located on the side of the middle template and higher than the middle template. The number and spacing of the folding edge pressing plates correspond to the through grooves of the upper template, and when the upper template runs to the low point position, the folding edge pressing plates can be inserted into the corresponding through grooves.

[0017] Furthermore, longitudinal guide posts are provided around the hollow part of the main tabletop. An upper support is arranged at the top of the longitudinal guide posts. The lifting drive mechanism is a lifting drive cylinder, which is arranged on the upper support. An upper guide sleeve is installed on the longitudinal guide posts and connected to a lifting plate. The upper template is installed on the lower surface of the lifting plate. The lifting plate is connected to the output end of the lifting drive cylinder; that is, the lifting drive cylinder drives the lifting plate to lift along the longitudinal guide posts, thereby driving the upper template to lift; the lower template is located at the hollow part of the main tabletop and is installed on the upper surface of the lower template mounting plate; the ends of the folding edge pressing plates are connected through a fixed block. The pressing plate drive mechanism is a pressing plate drive cylinder arranged on the lower surface of the lower template mounting plate, and its output end is connected to the fixed block. The fixed block is arranged on the horizontal guide rail on the upper surface of the lower template mounting plate. That is, the pressing plate drive cylinder synchronously drives a plurality of folding edge pressing plates to move horizontally through the fixed block.

[0018] Still further, the wrapping device also includes a pressure-holding cylinder arranged on the lower surface of the upper support. The output end of the pressure-holding cylinder faces downward and is opposite to the folding edge pressing plates; an avoidance hole for the pressure-holding cylinder to pass through is provided on the lifting plate.

[0019] Furthermore, the return spring is sleeved on the fifth positioning post of the lower template, and its two ends are respectively in contact with the lower surface of the middle template and the upper surface of the lower template.

[0020] Furthermore, the lower template mounting plate is arranged on the longitudinal guide posts through a set of lower guide sleeves and support springs.

[0021] The production process of the present invention first forms a semi-finished product module containing multiple semi-finished product units through multiple die-cutting processes. The semi-finished product units contain a composite component of a release film, a conductive double-sided adhesive, and a single-sided copper foil conductive adhesive. Then, the semi-finished product module and a PC module containing multiple PC blocks are modularly assembled through a wrapping device. Each assembly can complete the assembly of dozens to hundreds of finished products. Therefore, the production efficiency is high, the assembly accuracy is high, and the product stability is good. Description of the Drawings:

[0022] Figure 1 、 Figure 2 are three-dimensional views of the composite component of the present invention from different angles;

[0023] Figure 3 is an exploded schematic view of the composite component of the present invention;

[0024] Figure 4-1 、 Figure 4-2 are a die-cutting mold schematic view and a tape layer schematic view of the first die-cutting in the production process of the present invention;

[0025] Figure 5-1 、 Figure 5-2 are a die-cutting mold schematic view and a tape layer schematic view of the second die-cutting in the production process of the present invention;

[0026] Figure 6-1 、 Figure 6-2 are a die-cutting mold schematic view and a tape layer schematic view of the third die-cutting in the production process of the present invention;

[0027] Figure 7-1 、 Figure 7-2 are a die-cutting mold schematic view and a tape layer schematic view of the fourth die-cutting in the production process of the present invention; Figure 7-3 is a tape layer schematic view of the semi-finished product module;

[0028] Figure 8-1 is an overlay effect schematic view after four die-cuttings in the production process of the present invention;

[0029] Figure 8-2 is a schematic view of the semi-finished product module of the present invention;

[0030] Figure 8-3 is a schematic view of the PC block module in the production process of the present invention;

[0031] Figure 9-1 、 Figure 9-2 are overall structural schematic views of the wrapping device used in the production process of the present invention from different angles;

[0032] Figure 10 is a partial structural schematic view of the wrapping device;

[0033] Figure 11-1 、Figure 11-2 , Figure 11-3 are respectively schematic structural diagrams of the lower template, middle template, and upper template in the wrapping device;

[0034] Figure 12-1 , Figure 12-2 is a schematic diagram of the folding and wrapping step in the process of the present invention. Specific implementation manner:

[0035] The present invention relates to a production process for folding and wrapping a copper foil tape on a PC and attaching a back adhesive component. First, as shown in Figure 1 , Figure 2 and Figure 3 , the copper foil tape folding and wrapping PC and attaching back adhesive component 1 sequentially includes a release film 101, a double-sided conductive adhesive 102, a single-sided copper foil conductive adhesive 103, and a PC block 104 from bottom to top. In this embodiment, the release film 101 is a release film with the code JP-568, and the double-sided conductive adhesive 102 in this embodiment is a double-sided conductive tape with the code MXAC-118-0099A, and the single-sided copper foil conductive adhesive 103 is a copper foil single-sided conductive tape with the code 3M3304BC-S; wherein, the single-sided copper foil conductive adhesive 103 has an extension part 1031 protruding from the PC block 104, and the extension part 1031 is bent along one side surface of the PC block 104 and folded and wrapped on the upper surface of the PC block 104;

[0036] The production process of the copper foil tape folding and wrapping PC and attaching back adhesive component includes the following steps:

[0037] Step 1, in combination with Figure 4-1 , Figure 4-2As shown, the first transition film strip G1 with a built-in base film (film material with the code SP6T10 / P) is laminated with the second transition film strip G2 (transparent PET acrylic protective film with the code D-62H). The built-in base film G11 of the first transition film strip faces upward. The first flat die-cutting mold M1 is used for the first die-cutting. The first positioning hole X101, the first closed wireframe X102, the first edge line X103, and the first marking line X104 are die-cut and formed on this three-layer composite strip. Among them, the first closed wireframe X102 is half-cut to the second transition film strip G2, and the first edge line X103 is half-cut to the first transition film strip G1. That is, the die of the first flat die-cutting mold M1 has the first positioning hole blade M11, the first closed wireframe blade M12, the first edge line blade M13, the first marking line blade M14, and the first positioning post M15 corresponding to the first positioning hole. In this embodiment, the first closed wireframe X102 is in the shape of a rectangular strip, and the number is two and they are parallel to each other. The first edge lines X103 are two and are respectively located at both ends of the first closed wireframe 102 and are parallel. Then, the second transition film strip G2 is pulled down to remove the waste in the second transition film strip G2 and the first closed wireframe X102, that is, a first transition film strip G1 with a through hole corresponding to the shape of the first closed wireframe X102 is formed on the first transition film strip G1 containing the base film. Then, a third transition film strip G3 (in this embodiment, the third transition film strip G3 is a new layer of transparent PET acrylic protective film with the code D-62H) is laminated below. Then, the built-in base film G11 of the first transition film strip G1 is removed, and a release film strip L1, a double-sided conductive adhesive tape S1, and a fourth transition film strip G4 (release film with the code JE-311) are laminated on the first transition film strip G1 in sequence.

[0038] Step 2. Combine Figure 5-1 、 Figure 5-2As shown, the second die-cutting is performed using the second flat die-cutting mold M2. The second die-cutting is half-cut to the release film strip L1, forming multiple groups of second edge lines X201 on the double-sided conductive adhesive strip S2, and die-cutting and forming one side contour line X202 of the double-sided conductive adhesive. At the same time, the second marking line X203 is die-cut and formed on the strip. The second edge lines X201 are perpendicular to the first closed wireframe X102; that is, the die of the second flat die-cutting mold M2 has a second positioning post M21 corresponding to the first positioning hole X101, and has an array of spaced second edge line cutting edges M22 and second marking line cutting edges M23. The second edge line cutting edges M22 are used to form one side contour line X202 of the double-sided conductive adhesive on the double-sided conductive adhesive strip S1, and separate the material outside the second edge lines X201 as waste; then the waste outside each group of second edge lines X201 in the fourth transition film strip G4 and the double-sided conductive adhesive strip S1 is removed; that is, several spaced double-sided conductive adhesive strip materials are formed on the surface of the release film strip L1; then the fifth transition film strip G5 (a new release film coded JE-311) is laminated on the surface of the double-sided conductive adhesive strip material S1; at this time, the laminated strip from bottom to top is: the third transition film strip G3, the first transition film strip G1 with a through hole corresponding to the shape of the first closed wireframe X102, the release film strip L1, the spaced double-sided conductive adhesive strip materials S1, and the fifth transition film strip G5;

[0039] Step 3. Combine Figure 6-1 、 Figure 6-2As shown, the third die-cutting is performed using the third flat die-cutting mold M3, and the third die-cutting is semi-cut to the first transition film strip G1; on the cutting die of the third flat die-cutting mold M3, there are a third edge line cutting edge M31, a third closed wireframe cutting edge M32, a third marking line cutting edge M33, and a third positioning post M34. The shape of the third closed wireframe cutting edge M32 corresponds to the shape of the release film 101, and its position intersects with one side contour line X202 of the double-sided conductive adhesive formed by the second die-cutting. That is, after the third die-cutting by the third closed wireframe cutting edge M32, the entire contour line of the double-sided conductive adhesive 102 and the entire contour line of the release film 101, i.e., the release film contour line (the third closed wireframe X301 in the figure), are formed; the position of the third edge line cutting edge M31 corresponds to the position of the first edge line cutting edge M13, that is, a third edge line X302 is formed on the fifth transition film strip G5; then, the waste of the release film strip and the waste of the double-sided conductive adhesive strip outside the release film contour line formed by the fifth transition film strip G5 and the attached third closed wireframe cutting edge are removed, and then the fifth transition film within the range of the third closed wireframe X301, i.e., the release film contour line, is removed; at this time, the composite film strip from bottom to top is successively: the third transition film strip G3, the first transition film strip G1 with through holes corresponding to the shape of the first closed wireframe X102, the release films 101 arranged at intervals, and the double-sided conductive adhesives 102 arranged at intervals; then, a single-sided copper foil conductive adhesive strip T1 and a sixth transition film strip G6 (the sixth transition film strip G6 is a new release film with the code JE-311) are laminated on this composite film strip. Moreover, the non-adhesive surface of the single-sided copper foil conductive adhesive strip T1 is attached to the double-sided conductive adhesive, and the adhesive surface of the single-sided copper foil conductive adhesive strip T1 is attached to the sixth transition film strip G6;

[0040] Step Four. Combine Figure 7-1 、 Figure 7-2As shown, the fourth die-cutting is performed using the fourth flat die-cutting mold M4. The cutting die of the fourth flat die-cutting mold M4 has a fourth closed wireframe blade M41 corresponding to the shape of the single-sided copper foil conductive adhesive 103, a fourth positioning post M42 corresponding to the first positioning hole X101, and a fourth marking line blade M43. The depth of the fourth die-cutting is up to cutting the single-sided copper foil conductive adhesive tape T1 to form a single-sided copper foil conductive adhesive contour line X401. The single-sided copper foil conductive adhesive contour line X401 completely covers the double-sided conductive adhesive 102 and partially covers the release film contour line. Moreover, the contour line of the extension part of the single-sided copper foil conductive adhesive is perpendicular to the release film contour line, i.e., the third closed wireframe X301, and the extension part 1031 straddles the vacancy G101 formed by the first closed wireframe on the first transition film tape G1. Then, the sixth transition film tape G6 and the waste of the single-sided copper foil conductive adhesive tape outside the single-sided copper foil conductive adhesive contour line attached thereto are removed. Next, the sixth transition film within the single-sided copper foil conductive adhesive contour line is removed. Then, a seventh transition film tape G7 (in this embodiment, the seventh transition film tape G7 is a new release film coded JE-311) is laminated. As Figure 7-3 shown, that is, it is formed from bottom to top in sequence as: the third transition film tape G3, the first transition film tape G1 having a through hole corresponding to the shape of the first closed wireframe, the release films 101 arranged at intervals, the double-sided conductive adhesives 102 arranged at intervals, the single-sided copper foil conductive adhesives 103 arranged at intervals, and the seventh transition film tape G7, thus forming a semi-finished composite tape. Multiple semi-finished units are assembled on the semi-finished composite tape;

[0041] Step Five: Assemble the PC block. First, peel off the seventh transition film on the semi-finished unit to expose the adhesive surface of the single-sided copper foil conductive adhesive. Then, bond one end of the PC block to the single-sided copper foil conductive adhesive. Next, fold the extension part of the single-sided copper foil conductive adhesive protruding from the PC block upward along one side surface of the PC block and bond and attach the end of the extension part to the upper surface of the PC block to complete the assembly.

[0042] Combined with Figure 8-1 、 Figure 8-2 shown, further, in the above production process, the semi-finished tape formed in Step Four is cut into semi-finished modules A according to an equidistant specification. Each semi-finished module A has several semi-finished units including a release film, a double-sided conductive adhesive, and a single-sided copper foil conductive adhesive , for example, in this embodiment, 40 semi-finished units are arranged in a 5*8 layout on each semi-finished module finished products Meanwhile, the semi-finished module also has a total of 8 first positioning holes X101 formed by the first die-cutting in two rows of 4*2;

[0043] Correspondingly, as Figure 8-3As shown in the figure, a PC module 2 containing multiple PC blocks 104 is prepared in advance. The number and positions of the PC blocks 104 on the PC module 2 correspond to those of the semi-finished units on the semi-finished module. That is, there are 40 PC blocks 104 arranged in a 5*8 pattern. Second positioning holes 211 corresponding to the first positioning holes X101 on the semi-finished module are provided on the PC block carrier film 21 of the PC module 2.

[0044] During assembly, first peel off the third transition film on the semi-finished module, position the semi-finished module on the jig using the first positioning holes X101 on the first transition film, then peel off the seventh transition film on the semi-finished module to expose the adhesive surface of the single-sided copper foil conductive adhesive 103 of the semi-finished unit. Then, align the PC blocks 104 on the PC module 2 with the single-sided copper foil conductive adhesive 103, and use the second positioning holes 211 on the PC block carrier film 21 and the first positioning holes X101 on the semi-finished module to cooperate with the jig for positioning to make them align and bond. Then peel off the PC block carrier film 21 to form a semi-finished product to be wrapped. The semi-finished product to be wrapped thus forms, from bottom to top: the first transition film, the spaced release films 101, the spaced double-sided conductive adhesives 102, the spaced single-sided copper foil conductive adhesives 103, and the PC blocks 104. Among them, the extension part 1031 of the single-sided copper foil conductive adhesive 103 crosses the vacant part G101 on the first transition film.

[0045] Then place the semi-finished product to be wrapped on the wrapping device 3 for bending and compounding. On the wrapping device 3, perform the following operations in sequence: position and place the semi-finished product to be wrapped, press and limit the non-wrapped parts of the semi-finished product to be wrapped, bend and bond the extension part 1031 of the single-sided copper foil conductive adhesive 103 along one side surface of the PC block 104, and then bend and bond the extension part 1031 along the upper surface of the PC block 4 to complete the automatic wrapping operation.

[0046] Further, after the extension part 1031 is bent and bonded along the upper surface of the PC block 104, perform a pressing action again to make the extension part 1031 closely adhere to the upper surface of the PC block 104.

[0047] Combined with Figure 9, Figure 10 and Figure 11-1 、 Figure 11-2 、 Figure 11-3As shown in the figure, the wrapping device 3 includes a main tabletop 31 with a hollow part 311 formed in the middle, a lower template 32, a middle template 33, and an upper template 34. The upper template 34 is connected to a lifting drive mechanism 35. Among them, the position of the middle template 33 is higher than that of the main tabletop 31, and the width of the middle template 33 is greater than the width of the hollow part 311. The lower template 32 is located at the hollow part 311. The lower template 32 is provided with a fifth positioning post 321 corresponding to the first positioning hole X101 of the first transition film on the semi-finished product to be wrapped, and a top post 322 corresponding to the single-sided copper foil conductive adhesive extension part 1031 at the vacancy part of the first transition film on the semi-finished product to be wrapped (i.e., 40 top posts are arranged in a 5*8 pattern). The middle template 33 is provided with a third positioning hole 331 corresponding to the fifth positioning post 321, and several through holes 332 corresponding to the positions of the extension parts of the single-sided copper foil conductive adhesive on the semi-finished product to be wrapped and corresponding to the positions of the top posts 322. A return spring 333 is further provided between the middle template 33 and the lower template 32. The lower surface of the upper template 34 is provided with several through grooves 341 parallel to and corresponding to each column of through holes 332 on the middle template 33, and the width of the through grooves 341 is equivalent to the width of the through holes 332. The direction of the through grooves 341 is the same as the direction of the extension part 1031 on the semi-finished product to be wrapped. The lower surface of the upper template 34 is further provided with avoidance grooves 342 corresponding to the positions of the PC block 104 and the release film 101 on the semi-finished product to be wrapped and perpendicular to the direction of the through grooves 341, and a fourth positioning hole 343 corresponding to the fifth positioning post 321. The wrapping device 3 further includes several folding edge pressing plates 36 corresponding to the through grooves 341 of the upper template 34 and a pressing plate drive mechanism 37 for driving the folding edge pressing plates 36. The folding edge pressing plates 36 are arranged at the hollow part 311 of the main tabletop 31, and are located on the side of the middle template 33 and at a position higher than the middle template 33. The number and spacing of the folding edge pressing plates 36 correspond to the through grooves 341 of the upper template 34 (in this embodiment, there are 5 pieces, arranged longitudinally and parallelly). When the upper template 34 runs to the low point position, the folding edge pressing plates 36 can be inserted into the corresponding through grooves 341.

[0048] Combined with Figure 12-1 、 Figure 12-2As shown in the figure, when the semi-finished product to be wrapped is positioned on the middle template 33, the extension part 1031 of the single-sided copper foil conductive adhesive 103 is suspended at the position of the through hole 332, and is opposite to the ejector pin of the lower template 32 below. The release film 101 and the PC block 104 are located on the upper surface of the middle template 33 at one end of the through hole. When the upper template 34 moves downward until its lower surface contacts the upper surface of the middle template 33, each through slot 341 of the upper template 34 is opposite to a column of through holes 332 of the middle template 33. The PC block 104 and the release film 101 on the semi-finished product to be wrapped are partially located in the avoidance slot 342 of the upper template 34, and the other part of the PC block 104 protrudes into the through slot 341 of the upper template 34. The extension part 1031 of the single-sided copper foil conductive adhesive 103 of the semi-finished product to be wrapped is still suspended in the through hole 332 and is opposite to the through slot 341. When the upper template 34 further presses down the middle template 33, the middle template 33 moves downward relative to the lower template 32, and then the ejector pin 322 of the lower template 32 moves upward relatively, so as to push up the suspended extension part 1031 of the single-sided copper foil conductive adhesive. The extension part bends upward along the side of the PC block 104 and partially adheres to the side of the PC block. Then, under the drive of its pressing plate drive mechanism 37, the hemming pressing plate 36 is inserted into the through slot 341 of the upper template 34 and moves horizontally, and successively bends the erected extension part 1031 of the single-sided copper foil conductive adhesive further toward the upper surface of the PC block 104 and makes it adhere to the upper surface of the PC block, completing the wrapping operation.

[0049] After completion, reverse the hemming pressing plate 36 and the upper template 34, take out the product, and perform operations such as transfer pasting, applying a protective film, and packaging.

[0050] The present invention also provides a wrapping device for the above production process. The wrapping device 3 includes a main tabletop 31 with a hollow part 311 formed in the middle, a lower template 32, a middle template 33, and an upper template 34. The upper template 34 is connected to a lifting drive mechanism 35. Among them, the lower template 32 is provided with a fifth positioning post 321 corresponding to the first positioning hole X101 of the first transition film on the semi-finished product to be wrapped, and is provided with a top post 322 corresponding to the single-sided copper foil conductive adhesive extension part 1031 at the vacancy part of the first transition film on the semi-finished product to be wrapped (that is, 40 top posts are arranged in a 5*8 arrangement); the middle template 33 is provided with a third positioning hole 331 corresponding to the fifth positioning post 321, and is provided with several through holes 332 corresponding to the positions of the extension parts of the single-sided copper foil conductive adhesive on the semi-finished product to be wrapped and corresponding to the positions of the top posts 322; a return spring 333 is further provided between the middle template 33 and the lower template 32; the lower surface of the upper template 34 is provided with several through grooves 341 parallel to and corresponding to each column of through holes 332 on the middle template 33, and the width of the through grooves 341 is equivalent to the width of the through holes 332, and the direction of the through grooves 341 is consistent with the direction of the extension part 1031 on the semi-finished product to be wrapped; the lower surface of the upper template 34 is also provided with avoidance grooves 342 corresponding to the positions of the PC block 104 and the release film 101 on the semi-finished product to be wrapped and perpendicular to the direction of the through grooves 341, and is also provided with a fourth positioning hole 343 corresponding to the fifth positioning post 321; the wrapping device 3 further includes several folding edge pressing plates 36 corresponding to the through grooves 341 of the upper template 34 and a pressing plate drive mechanism 37 for driving the folding edge pressing plates 36. The folding edge pressing plates 36 are arranged at the hollow part 311 of the main tabletop 31, and are located on the side of the middle template 33 and higher than the middle template 33 in position. The number and spacing of the folding edge pressing plates 36 correspond to the through grooves 341 of the upper template 34 (5 pieces in this embodiment, arranged longitudinally and parallelly), and when the upper template 34 runs to the low point position, the folding edge pressing plates 36 can be inserted into the corresponding through grooves 341;

[0051] In the above-mentioned wrapping device, longitudinal guide posts 312 are provided at the edges of the hollow part of the main table surface 31. An upper support 313 is arranged at the top ends of the longitudinal guide posts 312. The lifting drive mechanism 35 is a lifting drive cylinder and is arranged on the upper support 313. An upper guide sleeve 314 is installed on the longitudinal guide posts 312 and is connected to a lifting plate 315. The upper template 34 is installed on the lower surface of the lifting plate 315. The lifting plate 315 is connected to the output end of the lifting drive cylinder. That is, the lifting drive cylinder drives the lifting plate 315 to lift and lower along the longitudinal guide posts 312, thereby driving the upper template 34 to lift and lower; the lower template 32 is located at the hollow part 311 of the main table surface 31 and is installed on the upper surface of a lower template mounting plate 323; the end of the hemming pressing plate 36 is connected through a fixing block 361. The pressing plate drive mechanism 37 is a pressing plate drive cylinder arranged on the lower surface of the lower template mounting plate 323, and its output end is connected to the fixing block 361. The lower template mounting plate 323 is provided with a strip-shaped hole for the connecting part of the two to reciprocate; the fixing block 361 is arranged on the horizontal guide rail 362 on the upper surface of the lower template mounting plate 323. That is, the pressing plate drive cylinder synchronously drives a plurality of hemming pressing plates 36 to move horizontally along the horizontal guide rail 362 through the fixing block 361;

[0052] In the above-mentioned production process, after the hemming pressing plate 36 extends into the through groove 341 of the upper template 34, further pressure is applied to the hemming pressing plate 36; that is, the wrapping device 3 further includes a pressure-holding cylinder 38 arranged on the lower surface of the upper support 313. The output end of the pressure-holding cylinder 38 faces downward and is opposite to the hemming pressing plate 36. An avoidance hole for the pressure-holding cylinder 38 to pass through is opened on the lifting plate 315; after the hemming wrapping is completed, the output end of the pressure-holding cylinder 38 moves downward and abuts against the fixing block 361, so that the hemming pressing plate further generates a downward pressure, and further presses and adheres the extension part 1031 of the single-sided copper foil conductive adhesive tightly on the upper surface of the PC block 104;

[0053] In the above-mentioned wrapping device, the return spring 333 can be sleeved on the fifth positioning post 321 of the lower template 32, and the two ends are respectively in contact with the lower surface of the middle template 33 and the upper surface of the lower template 32; on the one hand, the return spring 333 plays a role in supporting the middle template 33, and on the other hand, when the middle template 33 is pressed down by the upper template 34, it moves relatively up and down with the lower template 32, so that the ejector post 322 of the lower template 32 is jacked up, exposing the through hole 332 of the middle template 33, and completing the action of bending the extension part of the single-sided copper foil conductive adhesive 103; when the upper template 34 leaves the middle template 33, under the action of the return spring 333, the middle template 33 rises and resets, so that the ejector post 322 of the lower template 32 drops into the through hole 332 for the next action;

[0054] In the above-mentioned wrapping device, the lower template mounting plate 323 is arranged on the longitudinal guide post 312 through a set of lower guide sleeves 324 and support springs 325; when the upper template 34 presses down the middle template 33 and the middle template 33 moves in place, the lower template 32 can move downward synchronously with the middle template 33, using the support spring 325 to buffer and release pressure to avoid damage to the template. The support spring 325 also has the function of resetting the lower template 32; moreover, during the pressure-holding action, the pressure-holding cylinder 38 presses down the fixed block 361, which can make the lower template mounting plate 323 move further downward, while the periphery of the middle template 33 is limited by the periphery of the hollow part 311 of the main table 31 and stops moving, so that the hemming pressing plate 36 can generate a downward pressure on the product on the middle template 33, prompting the extension part 1031 and the PC block 104 to be further closely compounded and wrapped.

[0055] In summary, in the production process of the present invention, a semi-finished product module containing multiple semi-finished product units is first formed through multiple die-cutting processes. The semi-finished product units include a composite component of a release film, a conductive double-sided adhesive, and a single-sided copper foil conductive adhesive. Then, the semi-finished product module and a PC module containing multiple PC blocks are modularly assembled through a wrapping device. Each assembly can complete the assembly of dozens to hundreds of finished products. Therefore, the production efficiency is high, the assembly accuracy is high, and the product stability is good.

[0056] In the present invention, PC materials, single-sided conductive copper foils, etc. can also be replaced with other membrane materials according to actual needs and processed using the process of the present invention.

[0057] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present invention. However, the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims

1. A production process of a copper foil tape folding PC and attaching a back adhesive component. The copper foil tape folding PC and attaching a back adhesive component sequentially includes a release film, a double-sided conductive adhesive, a single-sided copper foil conductive adhesive, and a PC block from bottom to top. Among them, The single-sided copper foil conductive adhesive has an extension protruding from the PC block, and the extension is bent along one side of the PC block and folded and attached to the upper surface of the PC block. It is characterized in that the production process of the copper foil tape for folding and wrapping the PC and attaching the back glue assembly includes the following steps: Step 1: Compound the first transition film tape with a self-adhesive bottom film and the second transition film tape, with the self-adhesive bottom film facing upwards, and perform the first die-cutting using the first flat die-cutting die. Die-cut the first positioning hole, the first closed wire frame, the first edge line, and the first marking line on the compound film tape. Among them, the first closed wire frame is half-cut to the second transition film tape, and the first edge line is half-cut to the first transition film tape. Then, pull down the second transition film tape to remove the waste materials in the second transition film tape and within the first closed wire frame, that is, form a first transition film tape with through holes corresponding to the shape of the first closed wire frame on the first transition film tape containing the bottom film. Then, compound the third transition film tape below. Then, remove the self-adhesive bottom film of the first transition film tape, and successively compound the release film tape, the double-sided conductive adhesive tape, and the fourth transition film tape on the first transition film tape; Step 2: Perform the second die-cutting using the second flat die-cutting die. The second die-cutting is half-cut to the release film tape, form multiple groups of second edge lines on the double-sided conductive adhesive tape, and die-cut one side contour line of the double-sided conductive adhesive. At the same time, die-cut the second marking line on the film tape. The second edge line is in a perpendicular intersection state with the first closed wire frame. Then, remove the waste materials outside each group of second edge lines in the fourth transition film tape and the double-sided conductive adhesive tape. That is, form several double-sided conductive adhesive strip tapes on the surface of the release film tape. Then, compound the fifth transition film tape on the surface of the double-sided conductive adhesive strip tape. At this time, the compound film tape from bottom to top is successively: the third transition film tape, the first transition film tape with through holes corresponding to the shape of the first closed wire frame, the release film tape, the double-sided conductive adhesive strip tapes arranged at intervals, and the fifth transition film tape; Step 3: Perform the third die-cutting using the third flat die-cutting die. The third die-cutting is half-cut to the first transition film tape. The third die-cutting forms all the contour lines of the double-sided conductive adhesive and all the contour lines of the release film, and forms the third edge line on the fifth transition film tape whose position corresponds to the first edge line. Then, remove the waste materials of the release film tape outside the contour line of the release film formed by the third closed wire frame blade attached to the fifth transition film tape and the waste materials of the double-sided conductive adhesive strip tape, and then remove the fifth transition film within the third closed wire frame. At this time, the compound film tape from bottom to top is successively: the third transition film tape, the first transition film tape with through holes corresponding to the shape of the first closed wire frame, the release films arranged at intervals, and the double-sided conductive adhesives arranged at intervals. Then, compound the single-sided copper foil conductive adhesive tape and the sixth transition film tape on the compound film tape, and the non-adhesive surface of the single-sided copper foil conductive adhesive tape is attached to the double-sided conductive adhesive, and the adhesive surface of the single-sided copper foil conductive adhesive tape is attached to the sixth transition film tape; Step 4: Perform the fourth die-cutting using the fourth flat die-cutting mold. The depth of the fourth die-cutting is up to cutting the single-sided copper foil conductive adhesive tape, forming the contour line of the single-sided copper foil conductive adhesive. The contour line of the single-sided copper foil conductive adhesive completely covers the double-sided conductive adhesive and partially covers the contour line of the release film. Moreover, the contour line of the extension part of the single-sided copper foil conductive adhesive is perpendicular to the contour line of the release film, and the extension part crosses the vacancy formed by the first closed wire frame on the first transition film tape. Then, remove the sixth transition film tape and the waste of the single-sided copper foil conductive adhesive tape outside the contour line of the single-sided copper foil conductive adhesive attached thereto. Next, remove the sixth transition film within the contour line of the single-sided copper foil conductive adhesive. Then, laminate a seventh transition film tape, thus forming a semi-finished composite tape from bottom to top in sequence: the third transition film tape, the first transition film tape with through holes corresponding to the shape of the first closed wire frame, the release films arranged at intervals, the double-sided conductive adhesives arranged at intervals, the single-sided copper foil conductive adhesives arranged at intervals, and the seventh transition film tape, that is, forming a semi-finished composite tape. Step 5: Assemble the PC block. First, peel off the seventh transition film on the semi-finished product to expose the adhesive surface of the single-sided copper foil conductive adhesive. Then, bond one end of the PC block to the single-sided copper foil conductive adhesive. Next, fold the extension part of the single-sided copper foil conductive adhesive protruding from the PC block upward along one side surface of the PC block and bond and attach the end of the extension part to the upper surface of the PC block to complete the assembly.

2. The production process of the copper foil tape folding and wrapping PC and attaching a back adhesive assembly according to claim 1, characterized in that: The semi-finished product tape formed in the above Step 4 is cut into semi-finished product modules according to an equidistant specification. Each semi-finished product module has several semi-finished product units including a release film, a double-sided conductive adhesive, and a single-sided copper foil conductive adhesive. At the same time, the semi-finished product module also has several first positioning holes formed by the first die-cutting. Correspondingly, prepare a PC module containing multiple PC blocks in advance. The number and position of the PC blocks on the PC module correspond to those of the semi-finished product units on the semi-finished product module. Second positioning holes corresponding to the first positioning holes on the semi-finished product module are provided on the PC block carrier film of the PC module. During assembly, first peel off the third transition film on the semi-finished product module, position the semi-finished product module on the fixture by using the first positioning holes on the first transition film. Then, peel off the seventh transition film on the semi-finished product module to expose the adhesive surface of the single-sided copper foil conductive adhesive of the semi-finished product unit. Next, align the PC blocks on the PC module with the single-sided copper foil conductive adhesive, and use the second positioning holes on the PC block carrier film and the first positioning holes on the semi-finished product module to cooperate with the fixture positioning to make the two align and fit. Then, peel off the PC block carrier film to form a semi-finished product to be wrapped. The semi-finished product to be wrapped thus forms from bottom to top in sequence: the first transition film, the release films arranged at intervals, the double-sided conductive adhesives arranged at intervals, the single-sided copper foil conductive adhesives arranged at intervals, and the PC blocks; wherein the extension part of the single-sided copper foil conductive adhesive crosses the vacancy on the first transition film. Then, place the semi-finished product to be wrapped on the wrapping device for bending and laminating: that is, perform positioning and placing of the semi-finished product to be wrapped on the wrapping device in sequence, press and limit the non-wrapped parts of the semi-finished product to be wrapped, bend and fit the extension part of the single-sided copper foil conductive adhesive along one side surface of the PC block, and then bend and fit the extension part along the upper surface of the PC block to complete the automatic wrapping operation.

3. The production process of the copper foil tape folding and wrapping PC and attaching a back adhesive component according to claim 2, characterized in that: The wrapping device includes a main tabletop with a hollow part in the middle, a lower template, a middle template, and an upper template. The upper template is connected to a lifting drive mechanism. Among them, the lower template is provided with fifth positioning posts corresponding to the first positioning holes of the first transition film on the semi-finished product to be wrapped, and a top post corresponding to the extended part of the single-sided copper foil conductive adhesive at the vacancy of the first transition film on the semi-finished product to be wrapped; the middle template is provided with third positioning holes corresponding to the fifth positioning posts, and several through holes corresponding to the positions of the extended parts of the single-sided copper foil conductive adhesive on the semi-finished product to be wrapped and corresponding to the positions of the top posts of the lower template. A return spring is also provided between the middle template and the lower template; the lower surface of the upper template is provided with several through grooves parallel to each column of through holes on the middle template, and the lower surface of the upper template is also provided with avoidance grooves corresponding to the positions of the PC blocks and the release film on the semi-finished product to be wrapped and perpendicular to the direction of the through grooves; the wrapping device further includes several folding edge pressing plates corresponding to the through grooves of the upper template and a pressing plate drive mechanism for driving the folding edge pressing plates. The folding edge pressing plates are arranged at the hollow part of the main tabletop, and are located on the side of the middle template and higher than the middle template. The number and spacing of the folding edge pressing plates correspond to the through grooves of the upper template. When the upper template runs to the low point position, the folding edge pressing plates can be inserted into the corresponding through grooves; when the semi-finished product to be wrapped is positioned on the middle template, the extended part of the single-sided copper foil conductive adhesive is suspended at the position of the through hole, and is opposite to the top post of the lower template below, while the positions of the release film and the PC block are on the upper surface of the middle template at one end of the through hole; when the upper template moves downward until its lower surface contacts the upper surface of the middle template, each through groove of the upper template is opposite to a column of through holes of the middle template, and the PC blocks and the release film on the semi-finished product to be wrapped are partially located in the avoidance grooves of the upper template, and the other part of the PC block protrudes from the through grooves of the upper template, and the extended part of the single-sided copper foil conductive adhesive of the semi-finished product to be wrapped is still suspended in the through hole and opposite to the through groove; when the upper template further presses down the middle template, the middle template moves downward relative to the lower template, and then the top post of the lower template moves upward relatively, so as to push up the suspended extended part of the single-sided copper foil conductive adhesive. The extended part bends upward along the side of the PC block and partially adheres to the side of the PC block. Then, the folding edge pressing plates move along the through grooves under the drive of their pressing plate drive mechanism, and successively bend the extended parts of the single-sided copper foil conductive adhesive that are bent and erected further toward the upper surface of the PC block and make them adhere to the upper surface of the PC block to complete the wrapping operation; after completion, the folding edge pressing plates and the upper template are withdrawn in the reverse direction, and the product is taken out for transfer and packaging.

4. The production process of the copper foil tape folding and wrapping PC and attaching a back adhesive component according to claim 3, characterized in that: After the folding edge pressing plates extend into the through grooves of the upper template, further pressure is applied to the folding edge pressing plates to make the extended parts of the single-sided copper foil conductive adhesive tightly adhere to the upper surface of the PC block.

5. A wrapping device for the production process according to any one of claims 1-4, characterized in that: The wrapping device includes a main tabletop with a hollow part in the middle, a lower template, a middle template, and an upper template. The upper template is connected with a lifting drive mechanism. Among them, the lower template is provided with fifth positioning posts corresponding to the first positioning holes of the first transition film on the semi-finished product to be wrapped, and is provided with ejector pins corresponding to the extended parts of the single-sided copper foil conductive adhesive at the vacant parts of the first transition film on the semi-finished product to be wrapped; the middle template is provided with third positioning holes corresponding to the fifth positioning posts, and is provided with several through holes corresponding to the positions of the extended parts of the single-sided copper foil conductive adhesive on the semi-finished product to be wrapped and corresponding to the positions of the ejector pins of the lower template. A return spring is also arranged between the middle template and the lower template; the lower surface of the upper template is provided with several through grooves parallel to and corresponding to each column of through holes on the middle template. The lower surface of the upper template is also provided with avoidance grooves whose positions correspond to the PC blocks and the release film on the semi-finished product to be wrapped and whose directions are perpendicular to the through grooves; the wrapping device also includes several hemming pressing plates corresponding to the through grooves of the upper template and a pressing plate drive mechanism for driving the hemming pressing plates. The hemming pressing plates are arranged at the hollow part of the main tabletop, and are located on the side of the middle template and higher than the middle template. The number and spacing of the hemming pressing plates correspond to the through grooves of the upper template. When the upper template runs to the low point position, the hemming pressing plates can be inserted into the corresponding through grooves.

6. The wrapping device according to claim 5, characterized in that: Longitudinal guide posts are arranged around the hollow part of the main tabletop. An upper support is arranged at the top of the longitudinal guide posts. The lifting drive mechanism is a lifting drive cylinder, which is arranged on the upper support. An upper guide sleeve is installed on the longitudinal guide posts and is connected to a lifting plate. The upper template is installed on the lower surface of the lifting plate. The lifting plate is connected to the output end of the lifting drive cylinder; that is, the lifting drive cylinder drives the lifting plate to lift and lower along the longitudinal guide posts, so as to drive the upper template to lift and lower; the lower template is located at the hollow part of the main tabletop and is installed on the upper surface of the lower template mounting plate; the ends of the hemming pressing plates are connected through a fixed block. The pressing plate drive mechanism is a pressing plate drive cylinder arranged on the lower surface of the lower template mounting plate, and its output end is connected to the fixed block. The fixed block is arranged on the horizontal guide rail on the upper surface of the lower template mounting plate. That is, the pressing plate drive cylinder synchronously drives multiple hemming pressing plates to move horizontally through the fixed block.

7. The wrapping device according to claim 5, characterized in that: The wrapping device also includes a pressure-holding cylinder arranged on the lower surface of the upper support. The output end of the pressure-holding cylinder faces downward and is opposite to the hemming pressing plates; an avoidance hole for the pressure-holding cylinder to pass through is opened on the lifting plate.

8. The wrapping device according to claim 5, characterized in that: The return spring is sleeved on the fifth positioning post of the lower template, and its two ends are respectively in contact with the lower surface of the middle template and the upper surface of the lower template.

9. The wrapping device according to claim 5, wherein: The lower template mounting plate is arranged on the longitudinal guide posts through a group of lower guide sleeves and support springs.

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