Production process of multi-structure T-shaped conductive foam and its multi-mold system

Abstract

The invention discloses a production process of a multi-structure T-shaped conductive foam and a multi-mold system thereof, comprising S1: cutting a conductive hot-melt cloth raw material to obtain a long strip of conductive hot-melt cloth with a square hole; S2: positioning the long strip of foam and the long strip of conductive hot-melt cloth in S1, and pressing and heating the long strip of foam and the long strip of conductive hot-melt cloth to bond the long strip of conductive hot-melt cloth and the long strip of foam to obtain a semi-finished product A; S3: completely wrapping the long strip of conductive hot-melt cloth on the long strip of foam, forming an extension portion on the top thereof, and performing heating and bonding, cooling and shaping to obtain a semi-finished product B; S4: cutting a conductive adhesive raw material to obtain a long strip of conductive adhesive that matches the shape of the extension portion of the long strip of conductive hot-melt cloth, and pressing and bonding it on the top surface of the extension portion, and when pressing, the part of the long strip of foam exposed from the square hole is cut, and after pressing, a semi-finished product C is obtained; S5: cutting the semi-finished product C to obtain a finished multi-structure T-shaped conductive foam.

Description

Technical Field

[0001] The invention relates to the technical field of conductive foam, and in particular to a production process of multi-structure T-shaped conductive foam and a multi-mold system thereof. Background Art

[0002] Conductive foam is mainly used for electromagnetic shielding in electronic products. In the prior art, the patent number is CN 103680757B, and the patent name is: A production process of P-type conductive foam, which discloses a production process of conductive foam. In the process, it is only necessary to bend the cut conductive hot melt cloth and then wrap it on the cut foam, and then adhere a layer of conductive glue on its surface.

[0003] At present, for the conductive foam products produced by this process, when installing them in electronic products, multiple conductive foams need to be installed, the installation efficiency is not high, and after installation, the connection of multiple independent conductive foam structures is not stable enough. In order to connect multiple independent conductive foam structures in advance, it is necessary to process the products separately first, and then assemble and connect them. The process is complicated, and in the existing conductive foam production, conductive hot-melt cloth is usually wrapped on the missile foam manually, the production efficiency is not high, and the yield rate is difficult to guarantee. Therefore, designing a production process that can connect multiple independent conductive foam structures with high efficiency and high yield rate is the problem to be solved by this application.

[0004] In view of this, this application is hereby filed. Summary of the invention

[0005] The purpose of the present invention is to provide a production process of structural T-shaped conductive foam and a multi-mold system thereof, so as to solve the problems of low production efficiency and low yield rate in the production process of the prior art and difficulty in directly producing multi-structure T-shaped conductive foam.

[0006] In order to solve the above technical problems, the present invention adopts the following solutions:

[0007] One aspect of the present invention provides a production process for a multi-structure T-shaped conductive foam, which specifically comprises the following steps:

[0008] S1: cutting; cutting the conductive hot melt cloth raw material to obtain a long strip of conductive hot melt cloth with a plurality of square holes;

[0009] S2: Positioning; positioning the long strip of foam and the long strip of conductive hot melt fabric in S1:

[0010] Placing the long strip of foam in parallel on the long strip of conductive hot-melt cloth and pressing and heating them to bond the long strip of conductive hot-melt cloth and the long strip of foam to obtain a semi-finished product A;

[0011] S3: shaping; the long strip of conductive hot-melt fabric on the semi-finished product A is completely wrapped on the long strip of foam, and an extension portion is formed on the top thereof, and the position where the long strip of foam and the square hole of the long strip of conductive hot-melt fabric overlap is exposed, and then heating and bonding and cooling and shaping are performed in sequence to obtain a semi-finished product B;

[0012] S4: Preliminary forming; cutting the conductive adhesive raw material to obtain a long strip of conductive adhesive that matches the shape of the extended portion of the long strip of conductive hot-melt cloth, and pressing and bonding it to the top surface of the extended portion. During pressing, the portion of the long strip of foam exposed from the square hole is cut, and the long strip of foam is cut into multiple strips of foam, and after pressing, a semi-finished product C is obtained;

[0013] S5: Finished product is formed, and semi-finished product C is cut to obtain finished multi-structure T-shaped conductive foam.

[0014] Another aspect of the present invention provides a multi-mold system for a multi-structure T-shaped conductive foam production process, which is applied to the above-mentioned multi-structure T-shaped conductive foam production process, and includes a tool unit and a mold unit;

[0015] The tool unit includes a tool A for cutting the conductive hot-melt cloth raw material into a long strip of conductive hot-melt cloth with square holes, a tool B for cutting the conductive adhesive raw material to obtain a long strip of conductive adhesive, and a tool C for cutting the semi-finished product C to obtain a finished multi-structure T-shaped conductive foam.

[0016] The mold unit includes a positioning mold assembly for positioning and pressing the long strips of foam and the long strips of conductive hot-melt cloth to obtain semi-finished product A, a shaping mold assembly for shaping the long strips of foam and the long strips of conductive hot-melt cloth to obtain semi-finished product B, and a forming mold for cooperating with a tool B to obtain semi-finished product C.

[0017] In some optional embodiments, the tool A includes two parallel straight knives A for cutting the conductive hot melt cloth material into long strips, and a rectangular hole knife located between the two straight knives A, and the rectangular hole knife is used to cut square holes on the long strip of conductive hot melt cloth.

[0018] In some optional embodiments, the positioning mold assembly includes an upper mold and a lower mold that cooperate with each other, the upper mold and the lower mold are both plate-shaped, the top of the lower mold is provided with a positioning groove that matches the shape of the long strip of conductive hot-melt cloth, the bottom of the upper mold is provided with a positioning protrusion that matches the positioning groove, and the bottom of the positioning protrusion is provided with an installation groove that matches the shape of the long strip of foam. After the upper mold and the lower mold are pressed together, the bottom of the long strip of foam is pressed against the long strip of conductive hot-melt cloth.

[0019] In some optional embodiments, the shaping mold assembly includes a plate-shaped guide mold, the top of the guide mold is provided with a guide groove running through the top thereof, the longitudinal section of the guide groove is P-shaped, and the end of the guide groove is also provided with a trumpet mouth for folding part of the long conductive hot melt cloth on both sides of the bottom of the long foam strip toward the two sides of the long foam strip.

[0020] In some optional embodiments, the shaping mold assembly also includes a heating mold and a cooling mold with the same structure and both in the shape of a plate. The guide mold, heating mold, and cooling mold are arranged in sequence at intervals. The top of the heating mold is provided with a heating groove passing through the top thereof, and the top of the cooling mold is provided with a cooling groove passing through the top thereof. The longitudinal sections of the guide groove, heating groove, and cooling groove are the same and are arranged coaxially.

[0021] In some optional embodiments, the molding mold is in the shape of a plate, and the plate-shaped molding mold is provided with a plurality of molding grooves adapted to the shape of the long strip of foam, the plurality of molding grooves are arranged in parallel, and cutting protrusions corresponding to the square holes are provided in the molding grooves.

[0022] In some optional embodiments, the tool B includes several straight knife groups for cutting conductive adhesive raw materials, and the several straight knife groups are arranged in parallel and correspond to the forming grooves. Each straight knife group includes two straight knives B parallel to each other, and the distance between the two straight knives B is the width of the conductive adhesive.

[0023] In some optional embodiments, the tool C includes a plurality of gate-shaped engraving knives, which are distributed in an array and correspond to the molding grooves of the molding mold, and the spacing between the two sides of the engraving knife is equal to the length of the multi-structure T-shaped conductive foam.

[0024] In some optional embodiments, the two bends of the gate-shaped engraving knife both have chamfers, and the two chamfers are the same in size.

[0025] Beneficial effects of the present invention:

[0026] The effects are:

[0027] First, through the production process of multi-structure T-type conductive foam, multi-structure T-type conductive foam can be mass-produced, effectively improving efficiency. Secondly, compared with the existing process, it can avoid the problem of complicated process caused by the separate production and assembly of single foam wraps, and also save production consumables.

[0028] Second, through the multi-mold system of the multi-structure T-type conductive foam production process, the cutting, positioning, molding and other processes in the production process of the multi-structure T-type conductive foam can be operated by tools, which can ensure the dimensional accuracy of the product and avoid the yield problem caused by manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the process flow in Embodiment 1 of the present invention;

[0030] Figure 2 This is a schematic diagram of the top view of the semi-finished product A in the first embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the three-dimensional structure of the semi-finished product B in the first embodiment of the present invention;

[0032] Figure 4 Schematic diagram of the three-dimensional structure of the semi-finished product C in the first embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the three-dimensional structure of the finished multi-structure T-shaped conductive foam in Example 2 of the present invention;

[0034] Figure 6 for Figure 5 A local enlarged schematic diagram of the middle A;

[0035] Figure 7 This is a schematic diagram of the top view of the finished multi-structure T-shaped conductive foam in Example 2 of the present invention;

[0036] Figure 8 Schematic diagram of the blade back of the tool A in the third embodiment of the present invention;

[0037] Fig. 9 Schematic diagram of the blade surface of tool B in embodiment 3 of the present invention;

[0038] Fig.10 Schematic diagram of the blade back of the tool C in the third embodiment of the present invention;

[0039] Fig.11 Schematic diagram of the three-dimensional structure of the lower mold in the third embodiment of the present invention;

[0040] Fig.12 Schematic diagram of the three-dimensional structure of the upper mold in the third embodiment of the present invention;

[0041] Fig.13 Schematic diagram of the three-dimensional structure of the guide mold in the third embodiment of the present invention;

[0042] Fig.14 This is a schematic diagram of the three-dimensional structure of the heating mold in the third embodiment of the present invention;

[0043] Fig.15 Schematic diagram of the three-dimensional structure of the cooling mold in the third embodiment of the present invention;

[0044] Fig.16 It is a schematic diagram of the top view of the forming mold in the third embodiment of the present invention.

[0045] Description of reference numerals:

[0046] 100-long strip foam, 200-long strip conductive hot melt cloth, 1-strip foam, 2-strip conductive hot melt cloth, 21-extension part, 22-square hole, 3-conductive glue, 41-tool A, 411-straight tool A, 412-rectangular hole tool, 413-positioning hole A, 414-guide column, 42-tool B, 421-straight tool B, 422-positioning hole B, 43-tool C, 431-carving tool, 432-positioning hole C, 51 -lower mold, 511-positioning groove, 512-lower positioning hole, 52-upper mold, 521-positioning protrusion, 522-installing groove, 523-upper positioning column, 53-guide mold, 531-guide groove, 532-bell mouth, 54-heating mold, 541-heating groove, 55-cooling mold, 551-cooling groove, 56-molding mold, 561-molding groove, 562-cutting protrusion, 563-positioning column. DETAILED DESCRIPTION

[0047] The present invention will be further described in detail below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0048] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0049] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed", "opened", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments:

[0051] Embodiment 1:

[0052] like Figures 1 to 7As shown, this embodiment provides a production process of a multi-structure T-shaped conductive foam, which is used to produce the multi-structure T-shaped conductive foam described in any one of the above items, and specifically includes the following steps:

[0053] S1: cutting; cutting the conductive hot melt cloth raw material to obtain a long strip of conductive hot melt cloth 200 with a plurality of square holes 22; in this embodiment, the number of square holes 22 of the long strip of conductive hot melt cloth 200 with square holes 22 is four, divided into two groups, each group has two square holes 22, the spacing between the two square holes 22 in each group is equal to the length of the conductive foam, and the spacing between two adjacent square holes 22 between the two groups is equal to twice the length of the conductive foam;

[0054] S2: Positioning; After positioning the long strip of foam 100 and the long strip of conductive hot-melt cloth 200 in S1, the long strip of foam 100 is placed parallel to the long strip of conductive hot-melt cloth 200, and pressed and heated to make the long strip of conductive hot-melt cloth 200 adhere to the bottom surface of the long strip of foam 100, and obtain a semi-finished product A; Figure 2 As shown, in the semi-finished product A, the bottom surface of the long strip foam 100 is bonded to the long strip conductive hot melt cloth 200, and the long strip foam 100 is located in the middle of the square hole 22;

[0055] S3: shaping; the long strip of conductive hot melt cloth 200 on the semi-finished product A is completely wrapped on the long strip of foam 100, and an extension portion 21 is formed on the top thereof, followed by heating and bonding, cooling and shaping, to obtain a semi-finished product B; Figure 3 As shown, in the semi-finished product B, after the long strip of hot-melt cloth is completely wrapped on the long strip of foam 100, the position where the long strip of foam 100 and the square hole 22 of the long strip of hot-melt cloth overlap will be exposed;

[0056] S4: Preliminary forming; cutting the conductive adhesive 3 raw material to obtain a long strip of conductive adhesive 3 that matches the shape of the extension portion 21 of the long strip of conductive hot melt cloth 200, pressing and bonding the long strip of conductive adhesive 3 to the top surface of the extension portion 21, and during the pressing process, the long strip of foam 100 is cut into multiple strips of foam 1, and after the pressing is completed, a semi-finished product C is obtained; Figure 4 As shown, in the semi-finished product C, after the long strip of conductive adhesive 3 is pressed and bonded to the extension portion 21, the exposed portion of the long strip of foam 100 from the square hole 22 of the long strip of conductive hot-melt fabric 200 will be cut off;

[0057] S5: Finished product molding, cutting semi-finished product C, and obtaining finished multi-structure T-shaped conductive foam. Figure 1 and Figure 7 As shown, after the semi-finished product C is cut from the middle, the finished multi-structure T-shaped conductive foam can be obtained.

[0058] In summary, the process in this embodiment sequentially passes through steps S1-S5, so that the finished multi-structure T-shaped conductive foam can be mass-produced, effectively improving efficiency. Secondly, compared with the existing process, it can avoid the problem of complicated process caused by the separate production and assembly of single foam packages, and also save production consumables.

[0059] Embodiment 2:

[0060] like Figures 5 to 7 As shown, on the basis of the above-mentioned embodiment 1, this embodiment provides a finished multi-structure T-shaped conductive foam, which is produced using the production process in the above-mentioned embodiment 1, and specifically includes: a strip-shaped conductive hot-melt cloth 2 with square holes 22 and at least two coaxially arranged strip-shaped foams 1; a plurality of strip-shaped foams 1 are bonded and wrapped between the square holes 22 of the strip-shaped conductive hot-melt cloth 2 at intervals, and the strip-shaped conductive hot-melt cloth 2 has an extension portion 21 extending circumferentially toward the strip-shaped foam 1.

[0061] In this embodiment, since multiple strip foams 1 are coaxially and spacedly bonded and wrapped between the square holes 22 of the conductive hot melt cloth, a multi-structure conductive foam can be formed as a whole with multiple strip foams 1 through the conductive hot melt cloth, that is, the main utility model concept of this embodiment: multiple strip foams 1 are wrapped and connected by the same conductive hot melt cloth, which improves the efficiency during installation and the connection stability after installation. In this embodiment, the strip foam 1 material, the conductive glue 3 material and the conductive hot melt cloth material are all existing materials and will not be repeated here.

[0062] Specifically, Figure 2 As shown, a conductive adhesive 3 is bonded on the top surface of the extension portion 21 .

[0063] In some optional embodiments, the shape of the conductive adhesive 3 bonded to the top surface of the extending portion 21 is the same as the shape of the extending portion 21 .

[0064] Specifically, the extension portion 21 and the conductive adhesive 3 have two symmetrical chamfers on a side away from the strip-shaped foam 1 .

[0065] In some optional embodiments, the strip-shaped foams are all in the same shape, the length of the strip-shaped foams 1 is in the range of 6 mm to 10 mm, and the distance between adjacent strip-shaped foams 1 is in the range of 2 mm to 8 mm.

[0066] Specifically, the number of the strip foams is three, the length of the strip foam 1 is 8.32 mm, and the spacing between adjacent strip foams 1 is 3 mm. In some embodiments, the spacing between adjacent strip foams 1 is 2 mm, 4 mm, 5 mm, 6 mm, or 7 mm.

[0067] Preferably, the longitudinal section of the strip-shaped foam 1 is rectangular.

[0068] Specifically, the length of the square hole 22 along the length direction of the strip conductive hot melt cloth 2 is equal to the spacing between adjacent strip foams 1, and the width of the square hole 22 along the width direction of the strip conductive hot melt cloth 2 is equal to the sum of the top width of the strip foam 1 and the height of the left and right sides of the strip foam 1.

[0069] Optionally, the extension portion 21 of the strip-shaped conductive hot-melt cloth 2 and the bottom surface of the strip-shaped foam 1 are located in the same plane, and the extension width of the extension portion 21 is in the range of 1 mm to 2 mm.

[0070] Specifically, the width of the extension portion 21 is 1.3 mm.

[0071] Embodiment three:

[0072] Based on the above embodiment 1, Figures 8 to 16 As shown, this embodiment provides a multi-mold system for a multi-structure T-shaped conductive foam production process, which is applied to the above-mentioned multi-structure T-shaped conductive foam production process, and includes a tool unit and a mold unit;

[0073] The tool unit includes a tool A41 for cutting the conductive hot-melt cloth raw material into a long strip of conductive hot-melt cloth 200 with square holes 22, a tool B42 for cutting the conductive adhesive 3 raw material to obtain a long strip of conductive adhesive 3, and a tool C43 for cutting the semi-finished product C to obtain a finished multi-structure T-shaped conductive foam.

[0074] The mold unit includes a positioning mold assembly for positioning and pressing the long strip of foam 100 and the long strip of conductive hot-melt cloth 200 to obtain a semi-finished product A, a shaping mold assembly for shaping the long strip of foam 100 and the long strip of conductive hot-melt cloth 200 to obtain a semi-finished product B, and a molding mold 56 for cooperating with a tool B42 to obtain a semi-finished product C.

[0075] The multi-mold system in this embodiment can use tools such as tool units and mold units to perform cutting, positioning, and molding in the production process of multi-structure T-shaped conductive foam, thereby ensuring the dimensional accuracy of the product and avoiding yield problems caused by manual operations.

[0076] In some optional embodiments, the cutter A41 includes two parallel straight knives A411 for cutting the conductive hot melt cloth material into long strips, and a rectangular hole cutter 412 located between the two straight knives A411, and the rectangular hole cutter 412 is used to cut a square hole 22 on the long strip of conductive hot melt cloth 200. In this embodiment, the spacing between the two straight knives A411 of the cutter A41 is equal to the width between the strips of conductive hot melt cloth 2. The conductive hot melt cloth raw material can be cut into a long strip of conductive hot melt cloth 200 with square holes 22 by passing through two straight knives A411 of the tool A41 and a rectangular hole knife 412 between the two straight knives A411. In this embodiment, there are four rectangular hole knives 412 between the two straight knives A411, which are divided into two groups, each group has two rectangular hole knives 412, and the spacing between the two rectangular hole knives 412 in each group is equal to the length of the conductive foam, and the spacing between two adjacent rectangular hole knives 412 between the two groups is equal to twice the length of the conductive foam. The tool A41 is provided with four positioning holes A413 located on both sides of the two straight knives A411, as well as four guide columns 414 for positioning the length of the long strip of conductive hot melt cloth 200. The positioning holes A413 can avoid crooked cutting when cutting the conductive hot melt cloth raw material and avoid material waste.

[0077] In some optional embodiments, the positioning mold assembly includes an upper mold 52 and a lower mold 51 that cooperate with each other. The upper mold 52 and the lower mold 51 are both plate-shaped. The top of the lower mold 51 is provided with a positioning groove 511 that is adapted to the shape of the long strip of conductive hot-melt cloth 200, and the bottom of the upper mold 52 is provided with a positioning protrusion 521 that is adapted to the positioning groove 511. The bottom of the positioning protrusion 521 is provided with an installation groove 522 that is adapted to the shape of the long strip of foam 100. After the upper mold 52 and the lower mold 51 are pressed together, the bottom of the long strip of foam 100 is pressed against the top of the long strip of conductive hot-melt cloth 200. The conductive hot melt cloth with square holes 22 is placed in the positioning groove 511 of the lower mold 51, and then the long strip foam 100 is placed in the installation groove 522 of the upper mold 52. Then the upper mold 52 and the lower mold 51 are pressed and heated, so that the contact part of the long strip conductive hot melt cloth 200 and the long strip foam 100 is heated and bonded together, so that the long strip conductive hot melt cloth 200 and the long strip foam 100 are positioned. At this time, the semi-finished product A of the long strip conductive hot melt cloth 200 and the long strip foam 100 after positioning and bonding is as shown in FIG. Figure 5 shown.

[0078] In some embodiments, Fig.11 and Fig.12 As shown, the upper mold 52 is provided with an upper positioning column 523, and the lower mold 51 is provided with a lower positioning hole 512. The upper positioning column 523 is adapted to the lower positioning hole 512 to avoid misalignment of the long strip conductive hot melt cloth 200 and the long strip foam 100 in the length direction.

[0079] In some optional embodiments, the shaping mold assembly includes a plate-shaped guide mold 53, the top of the guide mold 53 is provided with a guide groove 531 that passes through the top, the longitudinal section of the guide groove 531 is P-shaped, and the ends of the guide groove 531 are also provided with a flare 532 for folding the parts of the long strip of conductive hot melt cloth 2002 on both sides of the bottom of the long strip of foam 100 toward the two sides of the long strip of foam 100. In this embodiment, as Fig.13 As shown, since the feeding end of the guide groove 531 of the guide mold 53 is provided with a bell mouth 532, when the long strip foam 100 and the conductive hot melt cloth enter from the bell mouth 532, the shape of the bell mouth 532 can make the long strip conductive hot melt cloth 200 parts located on both sides of the bottom of the long strip foam 100 gradually folded up, until the long strip conductive hot melt cloth 200 parts on both sides of the bottom of the long strip foam 100 are completely attached to the two sides of the long strip foam 100, and then the longer side of the long strip conductive hot melt cloth 200 part is attached to the top of the long strip foam 100 to completely wrap the long strip foam 100 and form an extension portion 21. At this time, the long strip conductive hot melt cloth 200 on the semi-finished product A is completely wrapped on the long strip foam 100. In this embodiment, the P-shaped longitudinal section of the guide groove 531 is the same as the longitudinal section of the long strip foam 100 after being completely wrapped by the long strip conductive hot-melt cloth 200 to form an extension.

[0080] In some optional embodiments, the shaping mold assembly further includes a heating mold 54 and a cooling mold 55 of the same structure and both in the shape of a plate. The guide mold 53, the heating mold 54, and the cooling mold 55 are arranged in sequence at intervals. The top of the heating mold 54 is respectively provided with a heating groove 541 passing through the top thereof, and the top of the cooling mold 55 is provided with a cooling groove 551 passing through the top thereof. The longitudinal sections of the guide groove 531, the heating groove 541, and the cooling groove 551 are the same and are arranged coaxially. Since the guide mold 53, the heating mold 54, and the cooling mold 55 are arranged in sequence at intervals, and the longitudinal sections of the guide groove 531, the heating groove 541, and the cooling groove 551 are the same and are arranged coaxially, the long strip of foam 100 wrapped with the long strip of conductive hot melt cloth 200 in the guide groove can be sequentially sent into the heating groove 541 of the heating mold 54 for heating and bonding, and then sent into the cooling groove 551 of the cooling mold 55 for cooling and molding, so as to obtain a semi-finished product B. The semi-finished product B in this embodiment is as shown in FIG. Figure 6 shown.

[0081] In some optional embodiments, the molding die 56 is plate-shaped, and the plate-shaped molding die 56 is provided with a plurality of molding grooves 561 that match the shape of the long strip foam 100. The plurality of molding grooves 561 are arranged in parallel, and the molding grooves 561 are provided with cutting protrusions 562 corresponding to the square holes 22. In this embodiment, the molding die 56 is provided with four positioning columns 563 arranged near its corners to facilitate positioning when cutting the finished product. In this embodiment, as shown in FIG. Fig.16 As shown, the molding die 56 is provided with five parallel molding grooves 561 .

[0082] In some optional embodiments, the cutter B42 includes a plurality of straight knife groups for cutting the conductive adhesive 3 raw material, the plurality of straight knife groups are arranged in parallel and correspond to the forming grooves 561, each straight knife group includes two straight knives B421 parallel to each other, and the distance between the two straight knives B421 is the width of the conductive adhesive 3. In this embodiment, the number of straight knife groups is five, and the five straight knife groups are arranged in parallel to each other and correspond to the five parallel forming grooves 561 respectively.

[0083] In some optional embodiments, the tool C43 includes a plurality of gate-shaped engraving knives 431, which are arranged in an array and correspond to the molding groove 561 of the molding mold 56, and the distance between the two sides of the engraving knife 431 is equal to the length of the multi-structure T-shaped conductive foam. Fig.10 As shown, the number of engraving knives 431 is 10, and the 10 engraving knives 431 are distributed in five rows and two columns, and the tool C43 is provided with a positioning hole C432 adapted to the positioning column 563 of the forming mold 56 to avoid cutting position deviation when cutting the semi-finished product C.

[0084] In some optional embodiments, the two bends of the gate-shaped carving knife 431 are both chamfered, and the two chamfers are of the same size. The chamfers of the two bends of the carving knife 431 can cut two chamfers on the extension of the finished multi-structure T-shaped conductive foam.

[0085] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled 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 considered to be within the scope of protection of the present invention.

Claims

1. The production process of multi-structure T-shaped conductive foam is characterized by: The specific steps include: S1: cutting; cutting the conductive hot-melt fabric raw material to obtain a long strip of conductive hot-melt fabric (200) having a plurality of square holes (22); S2: Positioning; positioning the long strip of foam (100) and the long strip of conductive hot melt fabric (200) in S1: Placing the long strip of foam (100) in parallel on the long strip of conductive hot-melt cloth (200) and pressing and heating them to bond the long strip of conductive hot-melt cloth (200) and the long strip of foam (100) to obtain a semi-finished product A; S3: shaping; the long strip of conductive hot-melt cloth (200) on the semi-finished product A is completely wrapped on the long strip of foam (100), and an extension portion (21) is formed on the top thereof, and the position where the long strip of foam (100) and the square hole (22) of the long strip of conductive hot-melt cloth (200) overlap is exposed, and then heating and bonding and cooling and shaping are performed in sequence to obtain a semi-finished product B; S4: Preliminary forming; cutting the conductive adhesive (3) raw material to obtain a long strip of conductive adhesive (3) that matches the shape of the extension portion (21) of the long strip of conductive hot-melt cloth (200), and pressing and bonding it to the top surface of the extension portion (21); during pressing, the portion of the long strip of foam (100) exposed from the square hole (22) is cut, and the long strip of foam (100) is cut into a plurality of strips of foam (1), and after pressing, a semi-finished product C is obtained; S5: Finished product is formed, and semi-finished product C is cut to obtain finished multi-structure T-shaped conductive foam.

2. A multi-mold system for a multi-structure T-shaped conductive foam production process, applied to the multi-structure T-shaped conductive foam production process according to claim 1, characterized in that: It includes a tool unit and a mold unit; The tool unit comprises a tool A (41) for cutting a conductive hot-melt cloth raw material into a long strip of conductive hot-melt cloth (200) having a square hole (22), a tool B (42) for cutting a conductive adhesive (3) raw material to obtain a long strip of conductive adhesive (3), and a tool C (43) for cutting a semi-finished product C to obtain a finished multi-structure T-shaped conductive foam. The mold unit comprises a positioning mold assembly for positioning and pressing the long strip of foam (100) and the long strip of conductive hot-melt cloth (200) to obtain a semi-finished product A, a shaping mold assembly for shaping the long strip of foam (100) and the long strip of conductive hot-melt cloth (200) to obtain a semi-finished product B, and a forming mold (56) for cooperating with a tool B (42) to obtain a semi-finished product C.

3. The multi-mold system for the production process of multi-structure T-shaped conductive foam according to claim 2, characterized in that: The cutter A (41) comprises two parallel straight knives A (411) for cutting the conductive hot melt cloth raw material into long strips, and a rectangular hole cutter (412) located between the two straight knives A (411), wherein the rectangular hole cutter (412) is used to cut square holes (22) on the long strip of conductive hot melt cloth (200).

4. The multi-mold system for the production process of multi-structure T-shaped conductive foam according to claim 2, characterized in that: The positioning mold assembly comprises an upper mold (52) and a lower mold (51) that cooperate with each other. The upper mold (52) and the lower mold (51) are both plate-shaped. The top of the lower mold (51) is provided with a positioning groove (511) that matches the shape of the long strip of conductive hot-melt cloth (200). The bottom of the upper mold (52) is provided with a positioning protrusion (521) that matches the positioning groove (511). The bottom of the positioning protrusion (521) is provided with a mounting groove (522) that matches the shape of the long strip of foam (100). After the upper mold (52) and the lower mold (51) are pressed together, the bottom of the long strip of foam (100) is pressed against the long strip of conductive hot-melt cloth (200).

5. The multi-mold system for the production process of multi-structure T-shaped conductive foam according to claim 2, characterized in that: The shaping mold assembly comprises a plate-shaped guide mold (53), the top of the guide mold (53) is provided with a guide groove (531) penetrating the top thereof, the longitudinal section of the guide groove (531) is P-shaped, and the ends of the guide groove (531) are also provided with a bell mouth (532) for folding parts of the long strip of conductive hot-melt cloth (200) on both sides of the bottom of the long strip of foam (100) toward the two sides of the long strip of foam (100).

6. The multi-mold system for the production process of multi-structure T-shaped conductive foam according to claim 5, characterized in that: The shaping mold assembly further comprises a heating mold (54) and a cooling mold (55) of the same structure and both in the form of a plate. The guide mold (53), the heating mold (54), and the cooling mold (55) are arranged in sequence and spaced apart. The top of the heating mold (54) is provided with a heating groove (541) passing through the top thereof, and the top of the cooling mold (55) is provided with a cooling groove (551) passing through the top thereof. The longitudinal sections of the guide groove (531), the heating groove (541), and the cooling groove (551) are the same and are arranged coaxially.

7. The multi-mold system for the production process of multi-structure T-shaped conductive foam according to claim 2, characterized in that: The forming mould (56) is plate-shaped, and is provided with a plurality of forming grooves (561) that match the shape of the long strip foam (100). The plurality of forming grooves (561) are arranged in parallel, and a cutting protrusion (562) corresponding to the square hole (22) is provided in the forming groove (561).

8. The multi-mold system for the production process of multi-structure T-shaped conductive foam according to claim 7, characterized in that: The cutter B (42) comprises a plurality of straight knife groups for cutting the conductive adhesive (3) raw material, the plurality of straight knife groups being arranged in parallel and corresponding to the forming grooves (561), each straight knife group comprising two straight knives B (421) parallel to each other, the distance between the two straight knives B (421) being the width of the conductive adhesive (3).

9. The multi-mold system for the production process of multi-structure T-shaped conductive foam according to claim 7, characterized in that: The tool C (43) comprises a plurality of gate-shaped engraving knives (431), the plurality of engraving knives (431) being distributed in an array and corresponding to the forming grooves (561) of the forming mold (56), and the spacing between the two side surfaces of the engraving knives (431) being equal to the length of the multi-structure T-shaped conductive foam.

10. The multi-mold system for the production process of multi-structure T-shaped conductive foam according to claim 9, characterized in that: The two bends of the gate-shaped carving knife (431) both have chamfers, and the two chamfers are of the same size.

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