High-speed circular die-cutting and hot melt wrapping integrated molding process and its hot melt wrapping fixture

Abstract

This invention relates to a high-speed rotary die-cutting and hot-melt wrapping integrated molding process and its hot-melt wrapping fixture, used for the production of conductive adhesive hot-melt cloth wrapped foam components. The conductive adhesive hot-melt cloth wrapped foam component includes a foam core strip, hot-melt cloth, a first conductive strip, a second conductive strip, a first release film, and a second release film. One side of the first release film protrudes from one side of the foam core strip and the hot-melt cloth, while the other side is flush with the other side of the foam core strip and the hot-melt cloth. A barrier film is also laminated to the protruding edge. The second release film completely covers the second conductive strip. The production process of this conductive adhesive hot-melt cloth wrapped foam component is carried out using a high-speed rotary die-cutting machine. This invention adopts a one-stop processing technology of rotary die-cutting and hot-melt wrapping on the same rotary die-cutting machine, reducing collection and transfer processes. On the one hand, this significantly improves product production efficiency; on the other hand, it significantly reduces equipment and production lines, saving space and costs, and also improves product quality.

Description

Technical Field

[0001] This invention relates to the field of composite die-cutting materials for electronic products, specifically a high-speed circular die-cutting and hot-melt wrapping integrated molding process and its hot-melt wrapping fixture. Background Technology

[0002] The design of electronic products such as computers, mobile phones, and tablets is becoming increasingly sophisticated, with ever-higher dimensional requirements. Consequently, the demands on the various composite die-cut components used internally are also rising. In some electronic products, conductive double-sided adhesive and hot-melt fabric are required to wrap foam components for bonding, cushioning, conductivity, or shielding. Traditional methods, such as manual labor or flat-blade processing, are inefficient, require numerous pieces of equipment, long production lines, large space requirements, and multiple transfers, further reducing efficiency and product accuracy, and increasing processing costs. Furthermore, different material conveyor flow processes and supporting equipment such as die-cutting dies and hot-melt wrapping fixtures are needed for the different layered structures of various components. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings of the prior art and provide a high-speed circular die-cutting hot melt wrapping integrated molding process and its hot melt wrapping fixture.

[0004] The technical solution adopted in this invention is: a high-speed circular die-cutting hot melt wrapping integrated molding process for the production of conductive adhesive hot melt cloth wrapped foam components. The conductive adhesive hot melt cloth wrapped foam components include a foam core strip as the core material, a hot melt cloth wrapped in a closed manner along the outer wall of the foam core strip, a first conductive adhesive strip and a second conductive adhesive strip respectively laminated on the upper and lower surfaces of the hot melt cloth, a first release film and a second release film respectively laminated on the outside of the first conductive adhesive strip and the second conductive adhesive strip, and one side of the first release film protrudes from one side of the foam core strip and the hot melt cloth, while the other side is flush with the other side of the foam core strip and the hot melt cloth. A barrier film is also laminated on the protruding edge. The second release film completely covers the second conductive adhesive strip.

[0005] This high-speed rotary die-cutting and hot-melt wrapping integrated molding process is carried out using a high-speed rotary die-cutting machine, and includes the following steps:

[0006] Step a: Composite the barrier film strip with the non-release surface of the first release film strip, with the barrier film strip at the bottom and the first release film strip at the top with the release surface facing upwards. The width of the barrier film strip is smaller than the width of the first release film strip. Then, composite the first transition film strip below the barrier film strip and the first release film strip, sandwiching the barrier film strip in the middle. The composite strip consisting of the first release film strip, the barrier film strip, and the first transition film strip is die-cut by the first circular die-cutting roller group. The die rollers of the first circular die-cutting roller group enter from above, and the die-cutting depth is exactly to the first transition film strip, forming the edge contour lines on both sides of the first release film, and simultaneously forming two first positioning mark lines. After passing through the first circular die-cutting roller group, the waste material of the first release film strip on both sides is removed.

[0007] Step b: In the direction of travel of the first transition film strip, the second transition film strip is laminated with the hot-melt fabric strip, with the hot-melt fabric strip on top and its adhesive side facing down, and the second transition film strip on the bottom. Simultaneously, the first conductive adhesive strip, the third transition film strip, and the fourth transition film strip are laminated from top to bottom, with the release paper of the first conductive adhesive strip facing up. The composite strip consisting of the first conductive adhesive strip, its release paper, the third transition film strip, and the fourth transition film strip is die-cut by the second circular die-cutting roller group. The die rollers of the second circular die-cutting roller group cut from above, and the die-cutting depth precisely reaches the third transition film strip. This forms the outlines of the two sides of the first conductive adhesive strip and two cutting lines of the third transition film strip, spaced apart from the outlines of the two sides of the first conductive adhesive strip. Two small narrow strips of the third transition film are formed on the third transition film strip. Simultaneously, the composite strip is formed with… The second positioning mark line corresponds to the first positioning mark line; after passing through the second circular die-cutting roller group, the waste material on both sides of the first conductive adhesive strip is removed and its own release paper is completely peeled off. At the same time, two narrow strips of the third transition film are removed, so that the composite strip is from bottom to top as: the fourth transition film strip, three spaced third transition film strips, and the first conductive adhesive strip composited on the middle third transition film strip. Then, the composite strip is turned by the first turning roller, so that the first conductive adhesive strip is combined with the hot melt cloth strip below, forming a five-layer composite strip from bottom to top as: the second transition film strip, the hot melt cloth strip, the first conductive adhesive strip, the third transition film strip, and the fourth transition film strip. The hot melt cloth strip also contacts the outer third transition film strip to completely cover the first conductive adhesive strip. The five-layer composite strip is located above the composite strip where the first transition film strip is located in step a, and the running direction is opposite.

[0008] Step c: The five-layer composite strip from step b is die-cut by the third circular die-cutting roller group. The die rollers of the third circular die-cutting roller group enter from above, and the width of the two blades on the die rollers of the third circular die-cutting roller group is greater than the width of the hot melt fabric strip. It cuts the fourth transition film strip and the third transition film strip in the five-layer composite strip, forming two edge break lines on the strip with a spacing greater than the width of the hot melt fabric strip. At the same time, it forms the third positioning mark line corresponding to the first positioning mark line. Then the fourth transition film strip and all the third transition film strips are removed. At this time, a three-layer composite strip is formed from bottom to top: the second transition film strip, the hot melt fabric strip, and the first conductive adhesive strip strip.

[0009] Step d: The three-layer composite strip formed in step c, consisting of the second transition film strip, the hot melt fabric strip, and the first conductive adhesive strip, is turned by the second steering roller, so that the first conductive adhesive strip is combined with the first release film strip that has been die-cut and discharged by the first circular die-cutting roller group in step a. This forms a multi-layer composite strip from bottom to top, consisting of: the first transition film strip, the first release film strip with the barrier film strip sandwiched at the edge, the first conductive adhesive strip, the hot melt fabric strip, and the second transition film strip. Then, the second transition film strip is discharged from the top and the first transition film strip is discharged from the bottom, so that the adhesive side of the hot melt fabric strip is exposed upwards, forming a composite strip that includes: the first release film strip with the barrier film strip laminated at the lower edge, the first conductive adhesive strip, and the hot melt fabric strip.

[0010] Step e: Lay the foam strip with the adhesive side down onto the hot melt fabric strip from step d. The hot melt fabric strip protrudes from both sides of the foam strip. Then, pass the composite strip with the foam strip through a hot melt wrapping fixture installed on a high-speed rotary die-cutting machine. First, the hot melt fabric strips on both sides of the foam strip are rolled and overlapped sequentially by the wrapping fixture in the hot melt wrapping fixture, so that the hot melt fabric strip completely wraps the foam strip along the running direction. Then, the hot melt module heats the hot melt fabric strip to make it sticky and firmly bonded, covering the outside of the foam strip. Thus, from bottom to top, the following are formed: barrier film strip, first release film strip, first conductive adhesive strip, and hot melt fabric strip that wraps the foam strip inside.

[0011] Step f: A fifth transition film strip is laminated at the bottom of the first release film strip and the barrier film strip after step e; in the forward direction of the running direction of the strip after the fifth transition film strip is laminated, the second conductive adhesive strip is laminated with the second release film strip, and then die-cut by the fourth circular die-cutting roller group. The die rollers of the fourth circular die-cutting roller group cut two second conductive adhesive strip outlines with a spacing equal to the width of the second conductive adhesive strip on the second conductive adhesive strip, forming the second conductive adhesive strip, and at the same time forming the fourth positioning mark line corresponding to the first positioning mark line; then the waste of the second conductive adhesive strip outside the second conductive adhesive strip outline line is removed, and after passing through the third steering roller, the second conductive adhesive strip is laminated onto the hot melt fabric strip wrapped around the foam strip, forming from bottom to top the fifth transition film strip, the barrier film strip, the first release film strip, the first conductive adhesive strip, the hot melt fabric strip wrapped around the foam strip, the second conductive adhesive strip, and the second release film strip;

[0012] Step g: The multi-layer composite strip after step f is die-cut by the fifth circular die-cutting roller group. The fifth circular die-cutting roller group enters from above and cuts the multi-layer composite strip at equal intervals. The die-cutting depth reaches the fifth transition film strip. After peeling off the fifth transition film strip, the finished product is formed. Each finished product consists of the following from bottom to top: a first release film with a barrier film on the edge, a first conductive adhesive strip, a hot melt cloth wrapped with a foam core strip inside, a second conductive adhesive strip, and a second release film.

[0013] In the above production process, the hot melt wrapping fixture includes a fixture base plate and wrapping components and hot melt modules sequentially arranged on the fixture base plate. The wrapping component includes a guide plate with a guide channel and a first wrapping pressure plate and a second wrapping pressure plate installed on the guide plate. The first wrapping pressure plate and the second wrapping pressure plate are located on both sides of the guide channel. The front side wall of the guide channel blocks the protruding foam parts on both sides of the hot melt fabric strip in a vertical state. Then, the first wrapping pressure plate presses the hot melt fabric strip on one side onto the foam strip and adheres it. Then, the second wrapping pressure plate overlaps and presses the hot melt fabric strip on the other side onto the hot melt fabric strip that has been laminated from the opposite side, thereby completing the wrapping of the foam strip by the hot melt fabric strip.

[0014] In the above production process, the first circular die-cutting roller group has two first contour line blades corresponding to the edge contour lines on both sides of the first release film and a first positioning mark line blade corresponding to the first positioning mark line.

[0015] In the above production process, the second circular die-cutting roller group is provided with two second contour line blades corresponding to the contour lines of the two sides of the first conductive adhesive strip, two third transition film strip cutting line blades corresponding to the third transition film strip cutting line, and a second positioning mark line blade corresponding to the second positioning mark line.

[0016] In the above production process, the cutter roller of the third circular die-cutting roller group is provided with an edge break line blade corresponding to the edge break line, and a third positioning mark line blade corresponding to the third positioning mark line;

[0017] In the above production process, the fourth circular die-cutting roller group is provided with a second conductive adhesive strip outline blade corresponding to the second conductive adhesive strip outline and a fourth positioning mark blade corresponding to the fourth positioning mark line.

[0018] In the above production process, the fifth circular die-cutting roller group is provided with equally spaced cutting blades on the die roller.

[0019] The working temperature of the hot melt module in the hot melt wrapping fixture is 100~120℃, and the speed of the material strip passing through the hot melt wrapping fixture is 4-10m / min;

[0020] The present invention also provides a hot melt wrapping fixture suitable for the above-mentioned process, which includes a fixture base plate and a wrapping assembly and a hot melt module arranged sequentially on the fixture base plate. The wrapping assembly includes a guide plate with a material guide groove and a first wrapping pressure plate and a second wrapping pressure plate installed on the guide plate. The first wrapping pressure plate and the second wrapping pressure plate are respectively located on both sides of the material guide groove, and the two are staggered along the material conveying direction, and their inner edge portions respectively cover the material guide groove.

[0021] The fixture base plate has strip-shaped holes at its four corners, which are connected to adjustable brackets on the lower surfaces of the front and rear ends of the fixture base plate via the strip-shaped holes and bolts. The adjustable brackets include a support shaft along the width of the fixture base plate, support blocks that are lockably and adjustablely fitted onto both ends of the support shaft and connected to the fixture base plate, support handles connected to both ends of the support shaft, and a fixing rod rotatably connected to the support handles. The fixing rods are fixedly connected to external equipment. The end of the support handle has an arc-shaped recess corresponding to the side wall of the support shaft, and the end of the support shaft also has a locking screw connected to the support handle.

[0022] Through the aforementioned adjustable structure, including the adjustable connection between the support shaft and the support block in the adjustable bracket, and the rotatable connection between the support handle and the fixed rod, the base plate of the fixture can be adjusted over a wide range of angles or heights to meet the needs of the material belt operation. At the same time, the aforementioned adjustable structure can also enable the quick disassembly and replacement of the hot-melt wrapping fixture.

[0023] This invention employs a one-stop processing technology that combines rotary die-cutting and hot melt wrapping on the same rotary die-cutting machine, reducing collection and transfer processes. This significantly improves product production efficiency, reduces equipment and production lines, saves space and costs, and enhances product quality. Attached Figure Description

[0024] Figure 1 , Figure 2 This is a schematic diagram of the structure of the conductive adhesive hot melt cloth wrapped foam component produced by the process of this invention;

[0025] Figure 3 This is a process flow diagram of the present invention;

[0026] Figure 3-1 , Figure 3-2 , Figure 3-3 , Figure 3-4 , Figure 3-5 This is a schematic diagram showing the roll deployment and die-cutting effect of the first, second, third, fourth, and fifth circular die-cutting roller groups used in the process of this invention.

[0027] Figure 3-6 yes Figure 3-1 , Figure 3-2 , Figure 3-3 , Figure 3-4 , Figure 3-5 Schematic diagram of the superimposed effect after die-cutting;

[0028] Figure 4 , Figure 5 This is a schematic diagram of the hot-melt wrapping fixture in the production process of this invention;

[0029] The roller with the letter U in the diagram represents the take-up roller, which is used to wind up waste material strips or has its own protective film. Detailed Implementation

[0030] like Figures 1-2 As shown, the present invention describes a high-speed circular die-cutting and hot-melt wrapping integrated molding process for the production of conductive adhesive hot-melt cloth wrapped foam components. The conductive adhesive hot-melt cloth wrapped foam component includes a foam core strip 1 as the core material, a hot-melt cloth 2 wrapped around the outer wall of the foam core strip 1, a first conductive adhesive strip 3 and a second conductive adhesive strip 4 respectively laminated on the upper and lower surfaces of the hot-melt cloth 2, and a first release film 5 and a second release film 6 respectively laminated on the outside of the first conductive adhesive strip 3 and the second conductive adhesive strip 4. The foam core strip 1 has a rectangular cross-section and is generally in the shape of a cuboid sheet, with both ends exposed. Its four side walls are overlapped and wrapped by the hot-melt cloth 2. One side of the first release film 5 protrudes from one side of the foam core strip 1 and the hot-melt cloth 2, and the other side is flush with the other side of the foam core strip 1 and the hot-melt cloth 2. A barrier film 7 is also laminated on the protruding edge. The width of the barrier film 7 is smaller than the width of the first release film 5. The second release film 6 completely covers the second conductive adhesive strip 4.

[0031] This high-speed rotary die-cutting and hot-melt wrapping integrated molding process is carried out using a high-speed rotary die-cutting machine, and includes the following steps:

[0032] Step a: Composite the barrier film strip H1 with the non-release surface of the first release film strip L1, with the barrier film strip H1 on the lower layer and the first release film strip L1 on the upper layer with the release surface facing upwards. The width of the barrier film strip H1 is smaller than the width of the first release film strip L1. Then, composite the first transition film strip G1 below the barrier film strip H1 and the first release film strip H1, sandwiching the barrier film strip H1 between the first transition film strip G1 and the first release film strip L1. The composite strip consisting of H1 and the first transition film strip G1 is die-cut by the first circular die-cutting roller group M1. The die rollers of the first circular die-cutting roller group M1 enter from above, and the die-cutting depth is exactly to the first transition film strip G1, forming the edge contour lines M101 on both sides of the first release film 5. One of the edge contour lines coincides with the outer edge contour line of the barrier film 7, and two first positioning mark lines M102 are formed at the same time. After passing through the first circular die-cutting roller group M1, the waste material of the first release film strips L1 on both sides is discharged from above.

[0033] Step b: In the direction of travel of the first transition film strip G1, the second transition film strip G2 is laminated with the hot melt fabric strip B1, with the hot melt fabric strip B1 on the upper layer and its adhesive side facing down, and the second transition film strip G2 on the lower layer. Simultaneously, the first conductive adhesive strip D1, the third transition film strip G3, and the fourth transition film strip G4 are laminated from top to bottom, with the release paper of the first conductive adhesive strip D1 facing up. The first conductive adhesive strip and its release paper, the third transition film strip G3, and the fourth transition film strip G4 are then laminated together. The composite strip composed of film strip G4 is die-cut by the second circular die-cutting roller group M2. The die rollers of the second circular die-cutting roller group M2 enter from above, and the die-cutting depth is exactly to the third transition film strip G3. On this composite strip, the outline lines M201 of the two sides of the first conductive adhesive strip and two third transition film strip cutting lines M202, which are respectively spaced from the outline lines M201 of the two sides of the first conductive adhesive strip, are formed. Two small third transition film strips are formed on the third transition film strip G3, and simultaneously formed with the first positioning. The second positioning mark line M203 corresponds to the marking line M102; after passing through the second circular die-cutting roller group M2, the waste material on both sides of the first conductive adhesive strip D1 is removed from the top and all its release paper is peeled off. At the same time, two narrow strips of the third transition film are removed, so that the composite strip is from bottom to top as: the fourth transition film strip G4, three spaced third transition film strips G3, and the first conductive adhesive strip D11 laminated on the middle third transition film strip G3. Then the composite strip is turned by the first turning roller Z1, so that the first The conductive adhesive strip D11 is combined with the hot melt fabric strip B1 below to form a five-layer composite strip from bottom to top: second transition film strip G2, hot melt fabric strip B1, first conductive adhesive strip D11, third transition film strip G3, and fourth transition film strip G4. The hot melt fabric strip B1 also contacts the outer third transition film strip G3, completely covering the first conductive adhesive strip D11. The five-layer composite strip is located above the composite strip where the first transition film strip G1 is located in step a, and the running direction is opposite.

[0034] Step c: The five-layer composite strip in step b is die-cut by the third circular die-cutting roller group M3. The die rollers of the third circular die-cutting roller group M3 enter from above and die-cut the fourth transition film strip and the third transition film strip in the five-layer composite strip, forming two edge break lines M301 with a spacing greater than the width of the hot melt fabric strip on the strip. At the same time, the third positioning mark line M302 corresponding to the first positioning mark line M102 is formed. Then the fourth transition film strip G4 and all the third transition film strips G3 are removed. At this time, a three-layer composite strip is formed from bottom to top: the second transition film strip G2, the hot melt fabric strip B1, and the first conductive adhesive strip D11.

[0035] Step d: The three-layer composite strip formed in step c, consisting of the second transition film strip G2, the hot melt fabric strip B1, and the first conductive adhesive strip D11, is turned by the second steering roller Z2, so that the first conductive adhesive strip D11 is combined with the first release film strip L1, which has been die-cut and discharged by the first circular die-cutting roller group in step a. This forms a multi-layer composite strip from bottom to top, consisting of: the first transition film strip G1, the first release film strip L1 with the barrier film strip H1 sandwiched at the edge, the first conductive adhesive strip D11, the hot melt fabric strip B1, and the second transition film strip G2. Then, the second transition film strip G2 is removed from the top and the first transition film strip G1 is removed from the bottom, so that the adhesive side of the hot melt fabric strip B1 is exposed upwards, forming a composite strip containing: the first release film strip L1 with the barrier film strip H1 laminated at the lower edge, the first conductive adhesive strip D11, and the hot melt fabric strip B1.

[0036] Step e: Combining Figures 3-4 As shown, the foam strip P1 is laminated with the adhesive side facing down onto the hot melt fabric strip B1 in step d. Both sides of the hot melt fabric strip B1 protrude from the foam strip P1. The laminated strip with the foam strip P1 is then passed through a hot melt wrapping fixture T installed on a high-speed rotary die-cutting machine. First, the wrapping fixture T1 in the hot melt wrapping fixture T causes the hot melt fabric strips B1 on both sides of the foam strip P1 to be rolled and overlapped in sequence, so that the hot melt fabric strip B1 completely wraps the foam strip P1 along the running direction. Then, the hot melt module T2 heats the hot melt fabric strip, making it sticky and firmly bonded, covering the periphery of the foam strip P1. Thus, from bottom to top, the following are formed: barrier film strip H1, first release film strip L1, first conductive adhesive strip D11, and hot melt fabric strip B1 that wraps the foam strip P1.

[0037] Step f: At the bottom of the first release film strip L1 and the barrier film strip H1 after step e, a fifth transition film strip G5 is laminated; at the upper front of the running direction of the strip after laminating the fifth transition film strip G5, the second conductive adhesive strip D2 is laminated with the second release film strip L2, and then die-cut by the fourth circular die-cutting roller group M4. The die rollers of the fourth circular die-cutting roller group M4 cut two second conductive adhesive strip outline lines M401 with a spacing equivalent to the width of the second conductive adhesive strip 4 on the second conductive adhesive strip D2, forming the second conductive adhesive strip strip D21, and simultaneously forming a strip similar to the first release film strip H1. The fourth positioning mark line 402 corresponds to the positioning mark line M102; then, the waste material of the second conductive adhesive strip D2 other than the outline line M401 of the second conductive adhesive strip is excluded, and after being turned by the third turning roller Z3, the second conductive adhesive strip D21 is bonded to the hot melt fabric strip B1 wrapped around the foam strip P1, forming from bottom to top the fifth transition film strip G5, the barrier film strip H1, the first release film strip L1, the first conductive adhesive strip D11, the hot melt fabric strip B1 that wraps the foam strip P1 inside, the second conductive adhesive strip D21, and the second release film strip L2;

[0038] Step g: The multi-layer composite strip after step f is die-cut by the fifth circular die-cutting roller group M5. The fifth circular die-cutting roller group M5 enters from above and cuts the multi-layer composite strip at equal intervals. The die-cutting depth reaches the fifth transition film strip G5. After peeling off the fifth transition film strip G5, the finished product is formed. Each finished product consists of the following from bottom to top: a first release film 5 with a barrier film 7 on the edge, a first conductive adhesive strip 3, a hot melt cloth 2 wrapped with a foam core strip 1 inside, a second conductive adhesive strip 4, and a second release film 6.

[0039] Alternatively, the slit finished product can be transferred to other rolls of material and then wound up.

[0040] In the above production process, the hot melt wrapping fixture T includes a fixture base plate T0 and wrapping components T1 and hot melt modules T2 sequentially arranged on the fixture base plate T0. The wrapping component T1 includes a guide plate T11 with a guide channel T101 and a first wrapping pressure plate T12 and a second wrapping pressure plate T13 installed on the guide plate T11. The first wrapping pressure plate T12 and the second wrapping pressure plate T13 are respectively located on both sides of the guide channel T101. The front sidewall of the guide channel T101 blocks the parts of the hot melt fabric strip B1 that protrude from the foam material strip P1 on both sides, making them vertical. Then, the first wrapping pressure plate T12 presses the hot melt fabric strip B1 that is vertical on one side onto the foam material strip P1 and adheres it. Next, the second wrapping pressure plate T13 is used to overlap and press the hot melt fabric strip on the other side onto the hot melt fabric strip that has been laminated on the opposite side, thereby completing the wrapping of the foam material strip P1 by the hot melt fabric strip B1; the working temperature of the hot melt module T2 in the hot melt wrapping fixture T is 100~120℃. The hot melt module T2 is set with a channel for the material strip to pass through. When the material strip passes through, the wrapped hot melt fabric strip is quickly heated and firmly bonded. The speed of the material strip passing through the hot melt wrapping fixture T is 4-10m / min; the rear of the hot melt wrapping fixture T is also equipped with a fast heat dissipation module T3, which together with the fixture base plate T0 forms a channel for the material strip to pass through and quickly conducts away and dissipates the heat of the material strip, so that the material strip cools down and sets quickly;

[0041] Combination Figures 3-1 to 3-6 As shown, in the above production process, the first circular die-cutting roller group M1 has two first contour line blades R101 corresponding to the edge contour lines M101 on both sides of the first release film, and two first positioning mark line blades R102 corresponding to the first positioning mark line M102; the second circular die-cutting roller group M2 has two second contour line blades R201 corresponding to the edge contour lines M201 on both sides of the first conductive adhesive strip, two third transition film strip slitting line blades R202 corresponding to the third transition film strip slitting line M202, and two second positioning mark line blades R102 corresponding to the second positioning mark line M203. The positioning mark line blade R203; the blade roller of the third circular die-cutting roller group M3 is provided with an edge break line blade R301 corresponding to the edge break line M301, and a third positioning mark line blade R302 corresponding to the third positioning mark line M302; the blade roller of the fourth circular die-cutting roller group M4 is provided with a second conductive adhesive strip outline blade R401 corresponding to the second conductive adhesive strip outline line M401, and a fourth positioning mark line blade R402 corresponding to the fourth positioning mark line M402; the blade roller of the fifth circular die-cutting roller group M5 is provided with equally spaced slitting blades R501.

[0042] Combination Figure 4 , Figure 5As shown, the present invention also provides a hot melt wrapping fixture T suitable for the above-mentioned process, including a fixture base plate T0 and a wrapping component T1 and a hot melt module T2 sequentially arranged on the fixture base plate T0. The wrapping component T1 includes a guide plate T11 with a guide channel T101 and a first wrapping pressure plate T12 and a second wrapping pressure plate T13 installed on the guide plate T11. The first wrapping pressure plate T12 and the second wrapping pressure plate T13 are respectively located on both sides of the guide channel T101, and the two are staggered along the material conveying direction, and their inner edge portions respectively cover the guide channel T101.

[0043] The fixture base plate T0 has four long-slot holes T01 at its four corners, which are connected to adjustable brackets T4 on the lower surfaces of the front and rear ends of the fixture base plate T0 via the long-slot holes T01 and bolts. The adjustable brackets T4 include a support shaft T41 along the width of the fixture base plate T0, support blocks T42 that are lockably and adjustablely fitted at both ends of the support shaft T41 and connected to the fixture base plate T0, support handles T43 connected to both ends of the support shaft T41, and a fixing rod T44 rotatably connected to the support handles T43. The fixing rod T44 is fixedly connected to an external device. The end of the support handle T43 has an arc-shaped recess T431 corresponding to the side wall of the support shaft T41, and the end of the support shaft T41 also has a locking screw T411 connected to the support handle T43.

[0044] Through the aforementioned adjustable structure, such as the adjustable connection between the support shaft T41 and the support block T42 in the adjustable bracket T4, and the rotatable connection between the support handle T43 and the fixed rod T44, the fixture base plate T0 can achieve a wide range of angle or height adjustment, thereby adapting to the needs of the material belt operation; at the same time, the aforementioned adjustable structure can also realize the quick disassembly and replacement of the hot melt wrapping fixture.

[0045] This invention employs a one-stop processing technology that combines rotary die-cutting and hot melt wrapping on the same rotary die-cutting machine, reducing collection and transfer processes. This significantly improves product production efficiency, reduces equipment and production lines, saves space and costs, and enhances product quality.

[0046] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and 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. A high-speed circular die-cutting and hot-melt wrapping integrated molding process for the production of conductive adhesive hot-melt cloth wrapped foam components. The conductive adhesive hot-melt cloth wrapped foam components include a foam core strip as the core material, a hot-melt cloth wrapped in a closed manner along the outer wall of the foam core strip, a first conductive adhesive strip and a second conductive adhesive strip respectively laminated on the upper and lower surfaces of the hot-melt cloth, a first release film and a second release film respectively laminated on the outside of the first conductive adhesive strip and the second conductive adhesive strip, wherein one side of the first release film protrudes from one side of the foam core strip and the hot-melt cloth, and the other side is flush with the other side of the foam core strip and the hot-melt cloth, and a barrier film is also laminated on the protruding edge; the second release film completely covers the second conductive adhesive strip. This high-speed rotary die-cutting and hot-melt wrapping integrated molding process is carried out using a high-speed rotary die-cutting machine, and includes the following steps: Step a: Composite the barrier film strip with the non-release surface of the first release film strip, with the barrier film strip at the bottom and the first release film strip at the top with the release surface facing upwards. The width of the barrier film strip is smaller than the width of the first release film strip. Then, composite the first transition film strip below the barrier film strip and the first release film strip, sandwiching the barrier film strip in the middle. The composite strip consisting of the first release film strip, the barrier film strip, and the first transition film strip is die-cut by the first circular die-cutting roller group. The die rollers of the first circular die-cutting roller group enter from above, and the die-cutting depth is exactly to the first transition film strip, forming the edge contour lines on both sides of the first release film, and simultaneously forming two first positioning mark lines. After passing through the first circular die-cutting roller group, the waste material of the first release film strip on both sides is removed. Step b: In the direction of travel of the first transition film strip, the second transition film strip is laminated with the hot-melt fabric strip, with the hot-melt fabric strip on top and its adhesive side facing down, and the second transition film strip on the bottom. Simultaneously, the first conductive adhesive strip, the third transition film strip, and the fourth transition film strip are laminated from top to bottom, with the release paper of the first conductive adhesive strip facing up. The composite strip consisting of the first conductive adhesive strip, its release paper, the third transition film strip, and the fourth transition film strip is die-cut by the second circular die-cutting roller group. The die rollers of the second circular die-cutting roller group cut from above, and the die-cutting depth precisely reaches the third transition film strip. This forms the outlines of the two sides of the first conductive adhesive strip and two cutting lines of the third transition film strip, spaced apart from the outlines of the two sides of the first conductive adhesive strip. Two small narrow strips of the third transition film are formed on the third transition film strip. Simultaneously, the composite strip is formed with… The second positioning mark line corresponds to the first positioning mark line; after passing through the second circular die-cutting roller group, the waste material on both sides of the first conductive adhesive strip is removed and its own release paper is completely peeled off. At the same time, two narrow strips of the third transition film are removed, so that the composite strip is from bottom to top as: the fourth transition film strip, three spaced third transition film strips, and the first conductive adhesive strip composited on the middle third transition film strip. Then, the composite strip is turned by the first turning roller, so that the first conductive adhesive strip is combined with the hot melt cloth strip below, forming a five-layer composite strip from bottom to top as: the second transition film strip, the hot melt cloth strip, the first conductive adhesive strip, the third transition film strip, and the fourth transition film strip. The hot melt cloth strip also contacts the outer third transition film strip to completely cover the first conductive adhesive strip. The five-layer composite strip is located above the composite strip where the first transition film strip is located in step a, and the running direction is opposite. Step c: The five-layer composite strip from step b is die-cut by the third circular die-cutting roller group. The die rollers of the third circular die-cutting roller group enter from above and die-cut the fourth transition film strip and the third transition film strip in the five-layer composite strip, forming two edge break lines on the strip with a spacing greater than the width of the hot melt fabric strip. At the same time, the third positioning mark line corresponding to the first positioning mark line is formed. Then the fourth transition film strip and all the third transition film strips are removed. At this time, a three-layer composite strip is formed from bottom to top: the second transition film strip, the hot melt fabric strip, and the first conductive adhesive strip. Step d: The three-layer composite strip formed in step c, consisting of the second transition film strip, the hot melt fabric strip, and the first conductive adhesive strip, is turned by the second steering roller, so that the first conductive adhesive strip is combined with the first release film strip that has been die-cut and discharged by the first circular die-cutting roller group in step a. This forms a multi-layer composite strip from bottom to top, consisting of: the first transition film strip, the first release film strip with the barrier film strip sandwiched at the edge, the first conductive adhesive strip, the hot melt fabric strip, and the second transition film strip. Then, the second transition film strip is discharged from the top and the first transition film strip is discharged from the bottom, so that the adhesive side of the hot melt fabric strip is exposed upwards, forming a composite strip that includes: the first release film strip with the barrier film strip laminated at the lower edge, the first conductive adhesive strip, and the hot melt fabric strip. Step e: Lay the foam strip with the adhesive side down onto the hot melt fabric strip from step d. The hot melt fabric strip protrudes from both sides of the foam strip. Then, pass the composite strip with the foam strip through a hot melt wrapping fixture installed on a high-speed rotary die-cutting machine. First, the hot melt fabric strips on both sides of the foam strip are rolled and overlapped sequentially by the wrapping fixture in the hot melt wrapping fixture, so that the hot melt fabric strip completely wraps the foam strip along the running direction. Then, the hot melt module heats the hot melt fabric strip to make it sticky and firmly bonded, covering the outside of the foam strip. Thus, from bottom to top, the following are formed: barrier film strip, first release film strip, first conductive adhesive strip, and hot melt fabric strip that wraps the foam strip inside. Step f: A fifth transition film strip is laminated at the bottom of the first release film strip and the barrier film strip after step e; in the forward direction of the running direction of the strip after the fifth transition film strip is laminated, the second conductive adhesive strip is laminated with the second release film strip, and then die-cut by the fourth circular die-cutting roller group. The die rollers of the fourth circular die-cutting roller group cut two second conductive adhesive strip outlines with a spacing equal to the width of the second conductive adhesive strip on the second conductive adhesive strip, forming the second conductive adhesive strip strip, and at the same time forming the fourth positioning mark line corresponding to the first positioning mark line; then the waste of the second conductive adhesive strip outside the second conductive adhesive strip outline line is removed, and after passing through the third steering roller, the second conductive adhesive strip strip is laminated onto the hot melt fabric strip wrapped around the foam strip, forming from bottom to top the fifth transition film strip, barrier film strip, first release film strip, first conductive adhesive strip strip, hot melt fabric strip wrapped around the foam strip, second conductive adhesive strip strip, and second release film strip; Step g: The multi-layer composite strip after step f is die-cut by the fifth circular die-cutting roller group. The fifth circular die-cutting roller group enters from above and cuts the multi-layer composite strip at equal intervals. The die-cutting depth reaches the fifth transition film strip. After peeling off the fifth transition film strip, the finished product is formed. Each finished product consists of the following from bottom to top: a first release film with a barrier film on the edge, a first conductive adhesive strip, a hot melt cloth wrapped with a foam core strip inside, a second conductive adhesive strip, and a second release film.

2. The high-speed circular die-cutting, hot-melt wrapping, integrated molding process according to claim 1, characterized in that: The hot melt wrapping fixture includes a fixture base plate and wrapping components and a hot melt module sequentially arranged on the fixture base plate. The wrapping component includes a guide plate with a material guide groove and a first wrapping pressure plate and a second wrapping pressure plate installed on the guide plate. The first wrapping pressure plate and the second wrapping pressure plate are located on both sides of the material guide groove. The front side wall of the material guide groove blocks the parts of the hot melt fabric strip that protrude from the foam material strip on both sides, making them vertical. Then, the first wrapping pressure plate presses the hot melt fabric strip that is vertical on one side onto the foam material strip and adheres it. Then, the second wrapping pressure plate overlaps and presses the hot melt fabric strip that is vertical on the other side onto the hot melt fabric strip that has been laminated from the opposite side, thereby completing the wrapping of the foam material strip by the hot melt fabric strip.

3. The high-speed circular die-cutting, hot-melt wrapping, integrated molding process according to claim 1, characterized in that: The first circular die-cutting roller group has two blades on the die roller that correspond to the edge contour lines on both sides of the first release film and two blades that correspond to the first positioning mark line.

4. The high-speed circular die-cutting, hot-melt wrapping, integrated molding process according to claim 1, characterized in that: The second circular die-cutting roller assembly has two second contour line blades corresponding to the contour lines of the two sides of the first conductive adhesive strip, two third transition film strip cutting line blades corresponding to the third transition film strip cutting line, and a second positioning mark line blade corresponding to the second positioning mark line.

5. The high-speed circular die-cutting, hot-melt wrapping, integrated molding process according to claim 1, characterized in that: The third circular die-cutting roller group has an edge break line blade corresponding to the edge break line and a third positioning mark line blade corresponding to the third positioning mark line.

6. The high-speed circular die-cutting, hot-melt wrapping, integrated molding process according to claim 1, characterized in that: The fourth circular die-cutting roller group has a second conductive adhesive strip outline blade corresponding to the second conductive adhesive strip outline and a fourth positioning mark blade corresponding to the fourth positioning mark line.

7. The high-speed circular die-cutting, hot-melt wrapping, integrated molding process according to claim 1, characterized in that: The fifth circular die-cutting roller group has equally spaced slitting blades on its rollers.

8. The high-speed circular die-cutting, hot-melt wrapping, integrated molding process according to claim 1 or 2, characterized in that: The working temperature of the hot melt module in the hot melt wrapping fixture is 100~120℃, and the speed of the material strip passing through the hot melt wrapping fixture is 4-10m / min.

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