Production process of conductive adhesive wrapped foam component with handle and wrapping molding machine thereof

Abstract

The present invention relates to a production process of a conductive adhesive wrapped foam component with a handle and a wrapping molding machine thereof. The foam component includes a block foam, a conductive double-sided adhesive layer wrapped on the upper and lower surfaces of the block foam along both sides, and a first release film is compounded on the outer surface of the conductive double-sided adhesive layer on the upper surface of the block foam, and a second release film is compounded on the outer surface of the conductive double-sided adhesive layer on the lower surface and both side surfaces of the block foam, and a gap is formed between the conductive double-sided adhesive layers on the lower surface of the block foam; the first release film has a handle portion extending out of the block foam, and the handle portion has a pre-bent line formed at the edge of the block foam. The production process of the foam component includes producing semi-finished products by a high-speed circular knife rotary die-cutting process and wrapping the semi-finished products by an automatic wrapping molding machine. The process and equipment of the present invention can better ensure the dimensional accuracy of the product, reduce the production process of separately fitting the handle, simplify the production process, and reduce the equipment development cost.

Description

Technical Field

[0001] The invention relates to the technical field of die-cut product assembly, in particular to a production process of a conductive adhesive-wrapped foam component with a handle and a wrapping molding machine thereof. Background Art

[0002] A large number of die-cut composite components are used in electronic components of mobile phones, tablet computers and other electronic products, and their parameters and assembly requirements are becoming more and more refined and precise. In order to meet market needs, the foam components used on some products need to be wrapped with conductive double-sided adhesive components and have handles. In the existing process, the double-sided adhesive and foam are generally formed first and then the handles are attached. This method is relatively complicated and inefficient, and the accuracy of manual handle attachment is difficult to guarantee. On the other hand, the existing wrapping jigs or equipment can often only wrap the entire film layer, and cannot wrap part of the film layer without wrapping other film layers. In addition, the equipment has poor versatility and can only be used for specific products, and the equipment development cost is high. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a production process for a conductive adhesive wrapped foam component with a handle and a wrapping molding machine thereof.

[0004] The technical scheme adopted by the present invention is: a production process of a conductive adhesive wrapped foam component with a handle, the foam component includes a block foam, a conductive double-sided adhesive layer wrapped on the upper and lower surfaces of the block foam along both sides, and a first release film is compounded on the outer surface of the conductive double-sided adhesive layer on the upper surface of the block foam, and a second release film is compounded on the outer surface of the conductive double-sided adhesive layer on the lower surface and both side surfaces of the block foam, and a gap is formed between the conductive double-sided adhesive layers on the lower surface of the block foam; the first release film has a handle portion extending out of the block foam, and the handle portion has a pre-bent line formed at the edge of the block foam; the characteristics are:

[0005] The production process of the foam component includes step 1: using a high-speed circular knife rotary die-cutting process to produce a semi-finished product:

[0006] First, the first protective film material strip, the second protective film material strip, and the first release film material strip are compounded in sequence from bottom to top, and the first circular knife die-cutting roller group is used for the first die-cutting. The first die-cutting is performed from the top of the material strip, and a first closed contour line and a pre-bending line corresponding to the shape of the first release film and its handle are formed on the first release film material strip, and at the same time, several first straight line fracture lines are formed along the length direction of the material strip and cut through the second protective film material strip; several first alignment marking lines are also formed; after the first die-cutting, the outer frame waste of the first release film material strip outside the first closed contour line and the outer edge waste on both sides of the second protective film material strip are peeled off; at this time, from bottom to top, they are: the first protective film material strip, the second protective film material strip, and the first release film unit;

[0007] At the front upper part of the running direction of the composite material strip, the second release film material strip and the third protective film material strip are firstly composited by another composite roller group, the second release film material strip is on the upper part with its release surface facing upwards, and then the second circular knife die-cutting roller group performs a second die-cutting, the second die-cutting is entered from the upper part of the material strip, the second release film material strip is cut through and a plurality of second straight line fracture lines along the length direction of the material strip are formed thereon, and the second release film material strip waste outside the second straight line fracture line is immediately peeled off after die-cutting, forming at least two parallel and spaced second release film material strips; then the second circular knife die-cutting roller group performs a second die-cutting After the lower roller is turned over, the second release film strip is compounded with the strip after the first die-cutting to form at least one set of parallel and spaced second release film strips; then, after the lower roller of the second circular knife die-cutting roller group is turned over, the second release film strip is compounded with the strip after the first die-cutting, so that one of the second release film strips is compounded on the first release film unit, and the other is compounded on the second protective film strip adjacent to the first release film, and then the third protective film strip is excluded. At this time, from bottom to top, it is: the first protective film strip, the second protective film strip, the first release film unit, and the second release film strip;

[0008] A composite foam material strip and a fourth protective film material strip are started, with the foam material strip on top and the fourth protective film material strip on the bottom, and they run above the first protective film material strip in the opposite direction to the running direction thereof, and are die-cut for the third time by the third circular knife die-cutting roller group. The knife is inserted above the foam material strip for the third die-cutting, and the foam material strip is cut through to form several third straight line fracture lines along the length direction of the material strip on the foam material strip, and the foam material strip waste outside each group of third straight line fracture lines is excluded to form several continuous foam material strips on the fourth protective film material strip; then, a conductive double-sided adhesive tape is compounded on each foam material strip, so that each conductive double-sided adhesive tape completely covers the corresponding foam material strip, and after compounding the third release film tape on the conductive double-sided adhesive tape, the fourth die-cutting is performed by the fourth circular knife die-cutting roller group; the fourth die-cutting starts from the third release film tape. The knife is inserted above the release film tape, and cuts through the conductive double-sided adhesive tape and the foam tape to form several conductive double-sided adhesive layer contour lines and block foam contour lines, and then the conductive double-sided adhesive tape waste and foam tape waste outside the conductive double-sided adhesive layer contour line are removed, and then the waste of the third release film tape within the conductive double-sided adhesive layer contour line is removed through the first row of waste tapes; after the waste is removed, the composite tape is turned over and compounded with the main tape carried by the first protective film tape, so that the two ends of the conductive double-sided adhesive layer are respectively compounded with the two second release film tapes carried by the first protective film tape, and the middle part of the conductive double-sided adhesive layer is bonded and compounded with the exposed first release film; at this time, from bottom to top, it is: the first protective film tape, the second protective film tape, the first release film, the second release film tape, the conductive double-sided adhesive layer, the block foam, and the fourth protective film tape;

[0009] After removing the fourth protective film tape, the first release paper tape is compounded on the block foam, and after removing the bottom first protective film tape, the semi-finished product is rolled up; that is, each roll of the semi-finished product comprises, from bottom to top, the second protective film tape, the first release film arranged at intervals, the second release film tape along the length direction, the conductive double-sided adhesive layer, the block foam and the first release paper tape;

[0010] Step 2: Use an automatic wrapping machine to wrap the semi-finished product:

[0011] The automatic wrapping forming machine comprises a machine platform, a wrapping channel slot plate arranged on the machine platform, and a front guide wheel mechanism arranged at the edge of the machine platform and located at the front end of the wrapping channel slot plate; the wrapping channel slot plate is provided with a wrapping channel for the material strip to be wrapped to pass through, and a first edge raising mechanism, a second edge raising mechanism, a first edge pressing mechanism, and a second edge pressing mechanism are alternately arranged on the machine platform and on both sides of the wrapping channel slot plate;

[0012] The semi-finished product is unrolled and put into the automatic wrapping and forming machine with the second protective film tape at the bottom and the first release paper tape at the top. The first release paper tape is peeled off and rolled up so that the block foam and the conductive double-sided adhesive layers on both sides are exposed upward, and the second protective film tape and the composite material thereon enter the wrapping channel;

[0013] The first edge starting mechanism and the second edge starting mechanism respectively have edge starting curved surfaces, through which the two second release film strips on the semi-finished material strip and the two sides of the foam in a horizontal state and the conductive double-sided adhesive layer thereon are gradually transformed from a horizontal state to a vertical state, and the conductive double-sided adhesive layer is bonded and wrapped with the two side walls of the foam; and the second protective film strip and the first release films arranged at intervals pass between the lower surface of the first edge starting plate and the bottom surface of the wrapping channel;

[0014] The first edge pressing mechanism and the second edge pressing mechanism respectively have edge pressing curved surfaces, through which the second release film strips erected on both sides and the conductive double-sided adhesive layer thereon are folded toward the upper surface of the foam and finally the conductive double-sided adhesive layer and the second release film strips are compositely wrapped on the upper surface of the foam;

[0015] Finally, the second release film tape and the conductive double-sided adhesive layer are pressed together with the foam by the pressing wheel of the pressing wheel mechanism to complete the wrapping, unloading and winding. When in use, the second release film and the first release film are peeled off as needed to make the foam fully bonded to other products.

[0016] In the above process, the upper blade roller of the first circular die-cutting roller group is provided with a plurality of first closed contour blades corresponding to the shape of the first release film and its handle portion, three first straight blades, and three first alignment mark line blades; the first closed contour blades are evenly arranged along the circumferential direction of the blade roller, and in this embodiment, there are two groups of first closed contour blades, each group has 25 blades, that is, 25 first release films are formed each time the die-cutting is performed; a dotted line blade is provided inside the first closed contour blade, corresponding to the inner root of the handle portion, so as to form a pre-bend line at this location for facilitating the bending of the handle portion;

[0017] The upper knife roller of the second circular die-cutting roller group is provided with a plurality of second linear blades corresponding to the second linear fracture lines, so as to divide the second release film material strip into two groups of second release film material strips. In this embodiment, there are two groups, a total of four second release film material strips arranged in parallel; the upper knife roller of the second circular die-cutting roller group is provided with a second alignment mark line blade to form the second alignment mark line;

[0018] The upper knife roller of the third circular knife die-cutting roller group is provided with a plurality of third linear blades corresponding to the third linear fracture line, so as to divide the first foam material strip into two foam material strips, and the upper knife roller of the third circular knife die-cutting roller group is provided with a third alignment mark line blade to form the third alignment mark line;

[0019] The upper knife roller of the fourth circular knife die-cutting roller group is provided with a plurality of double-sided adhesive contour line blades corresponding to the contour line of the conductive double-sided adhesive layer, so that 25 conductive double-sided adhesive layers are formed in each operation, and the fourth circular knife die-cutting roller group is also provided with a fourth alignment mark line blade to form a fourth alignment mark line;

[0020] In the above production process, the first edge raising mechanism and the second edge raising mechanism respectively have a first edge raising plate and a lateral adjustment mechanism, and a second edge raising plate and a lateral adjustment mechanism; the first edge pressing mechanism and the second edge pressing mechanism respectively have a first edge pressing plate and a composite adjustment mechanism, and a second edge pressing plate and a composite adjustment mechanism; the two side walls of the wrapping channel groove plate are alternately provided with notches for the first edge raising mechanism, the second edge raising mechanism, the first edge pressing mechanism, and the second edge pressing mechanism to extend into the wrapping channel.

[0021] The present invention also provides an automatic wrapping and forming machine used in the above process, the automatic wrapping and forming machine comprises a machine platform, a wrapping channel slot plate arranged on the machine platform, and a front guide wheel mechanism arranged at the edge of the machine platform and located at the front end of the wrapping channel slot plate; the wrapping channel slot plate is provided with a wrapping channel for the material strip to be wrapped to pass through, and a first edge starting mechanism, a second edge starting mechanism, a first edge pressing mechanism, and a second edge pressing mechanism are alternately arranged on the machine platform and on both sides of the wrapping channel slot plate, the first edge starting mechanism and the second edge starting mechanism respectively have a first edge starting plate and its lateral adjustment mechanism, a second edge starting plate and its lateral adjustment mechanism, and the first edge starting mechanism is provided with a first edge starting plate and its lateral adjustment mechanism, and a second edge starting plate and its lateral adjustment mechanism. The edge clamping mechanism and the second edge clamping mechanism respectively have a first edge clamping plate and its composite adjustment mechanism, and a second edge clamping plate and its composite adjustment mechanism; the inner end faces of the first edge starting plate and the second edge starting plate respectively have edge starting curved surfaces, and the inner end faces of the first edge clamping plate and the second edge clamping plate respectively have edge clamping curved surfaces, and the two side walls of the wrapping channel groove plate are alternately provided with notches for the inner ends of the first edge starting plate, the second edge starting plate, the first edge clamping plate, and the second edge clamping plate to extend into the wrapping channel, and there is a gap between the lower surfaces of the first edge starting plate, the second edge starting plate, the first edge clamping plate, and the second edge clamping plate and the bottom surface of the wrapping channel for the feeding belt to pass through.

[0022] The lateral adjustment mechanism is installed on the machine platform in an offset relative manner, and includes a lateral differential head installed on the machine platform, a group of horizontal guide rails, a slider arranged on the horizontal guide rails, a first stop block installed on the machine platform, and a lateral return spring and a spring shaft connected to the first stop block; the first side starting plate and the second side starting plate are respectively installed on the slider, and the outer end faces of the first side starting plate and the second side starting plate are respectively in contact with the lateral differential head, and the inner end faces extend into the wrapping channel; the lower surfaces of the first side starting plate and the second side starting plate are also respectively connected to a second stop block, and the second stop block is in contact with the outer end of the lateral return spring.

[0023] The compound adjustment mechanism includes a group of lateral adjustment mechanisms and longitudinal adjustment mechanisms. The longitudinal adjustment mechanism includes an angle plate installed on the slider of the lateral adjustment mechanism, a horizontal mounting plate connected to the upper end surface of the angle plate, a longitudinal differential head connected to the horizontal mounting plate, and a longitudinal guide rod assembly arranged on the horizontal mounting plate; the first edge clamping plate of the first edge clamping mechanism and the second edge clamping plate of the second edge clamping mechanism are respectively connected to the lower ends of the longitudinal guide rod assemblies of their respective compound adjustment mechanisms, and longitudinal return springs are respectively provided between the first edge clamping plate, the second edge clamping plate and their respective horizontal mounting plates, and the upper surfaces of the first edge clamping plate and the second edge clamping plate are respectively in contact with the longitudinal differential head.

[0024] Vacuum adsorption holes are provided on the front section of the wrapping channel groove plate and the bottom surface of the wrapping channel.

[0025] A pressing wheel mechanism is also provided at the end of the wrapping channel groove plate and above the wrapping channel.

[0026] The present invention adopts the above-mentioned production process, and designs an integrated circular knife die-cutting process for the handle, double-sided tape and foam. Compared with the traditional process of first molding the double-sided tape and foam and then attaching the handle, this process design can better ensure the dimensional accuracy of the product, especially the relative position of the handle and the product. In combination with the use of improved wrapping equipment and processes, the semi-finished material strip can be wrapped together with the handle during wrapping, reducing the production process of attaching the handle separately and simplifying the production process. On the other hand, the wrapping equipment in the present invention can also be used for the wrapping and molding of square products within the specifications. One jig can be used for the wrapping and molding of most products, which greatly reduces the equipment development cost, and the jig is easy to adjust and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of a conductive double-sided adhesive foam component in the present invention;

[0028] Figure 2 It is a schematic diagram of the exploded structure of the semi-finished material strip of the conductive double-sided adhesive foam component in the present invention;

[0029] Figure 3 It is a schematic diagram of the production process of the semi-finished material strip of the conductive double-sided adhesive foam component in the present invention;

[0030] Figure 4-1 , Figure 4-2 , Figure 4-3 , Figure 4-4 They are respectively schematic diagrams of the roll deployment and die-cutting effect of the first circular die-cutting roller group, the second circular die-cutting roller group, the third circular die-cutting roller group, and the fourth circular die-cutting roller group used in the production process of the semi-finished material strip in the present invention;

[0031] Figure 4-5 yes Figure 4-1 , Figure 4-2 , Figure 4-3 , Figure 4-4 Schematic diagram of the superposition effect after die-cutting;

[0032] Figure 5 It is a schematic diagram of the overall structure of the wrapping device used in the present invention;

[0033] Figure 6 is a schematic diagram of the overall structure of the wrapping device of the present invention from another angle;

[0034] Figure 7 It is a partial structural schematic diagram of the wrapping device in the present invention.

[0035] The roller with letter U in the figure represents the take-up roller, which is used to take up the waste material strip or the self-contained protective film. DETAILED DESCRIPTION

[0036] The present invention discloses a production process of a conductive adhesive wrapped foam component with a handle, firstly Figure 1 , Figure 2 As shown, the foam component includes a block foam 1, a conductive double-sided adhesive layer 2 wrapped around the upper and lower surfaces of the block foam along both sides, and a first release film 3 is compounded on the outer surface of the conductive double-sided adhesive layer 2 on the upper surface of the block foam 1, and a second release film 4 is compounded on the outer surfaces of the conductive double-sided adhesive layer on the lower surface and both side surfaces of the block foam 1, and a gap is formed between the conductive double-sided adhesive layers on the lower surface of the block foam 1; the first release film 3 has a handle portion 31 extending out of the block foam, and the handle portion 31 is formed with a pre-bent line 32 at the edge of the block foam 1;

[0037] Combination Figure 3-Figure 4-5 As shown, the production process of the foam component includes step 1: using a high-speed circular knife rotary die-cutting process to produce a semi-finished product:

[0038] First, the first protective film strip B1, the second protective film strip B2 (peel off its own film first), and the first release film strip L1 are laminated in sequence from bottom to top, and the first circular die-cutting roller group M1 is used for the first die-cutting. Figure 4-1 As shown, the first die-cutting is carried out from the top of the material strip, and a first closed contour line M101 and a pre-bending line M102 corresponding to the shape of the first release film 3 and its handle portion 31 are formed on the first release film material strip L1, and at the same time, several first straight line fracture lines M103 along the length direction of the material strip and cutting through the second protective film material strip B2 are formed; several first alignment mark lines M104 are also formed; after the first die-cutting, the outer frame waste of the first release film material strip L1 outside the first closed contour line M101 and the outer edge waste on both sides of the second protective film material strip B2 are peeled off; at this time, from bottom to top, they are: the first protective film material strip B1, the second protective film material strip B2, and the first release film 3 arranged at intervals on the second protective film material strip B2;

[0039] like Figure 4-1 As shown, the upper knife roller of the first circular die-cutting roller group M1 is provided with a plurality of first closed contour blades M11 corresponding to the shape of the first release film 3 and its handle portion 31, three first straight blades M12, and three first alignment mark line blades M13; the first closed contour blades M11 are evenly arranged along the circumferential direction of the knife roller, and in this embodiment, there are two groups of first closed contour blades M11, each group has 25, that is, 50 first release films 3 are formed by die-cutting each time; a dotted line blade M14 is provided inside the first closed contour blade M11, corresponding to the inner root of the handle portion, so as to form a pre-bend line 32 at this location for facilitating the bending of the handle portion 31;

[0040] For example Figure 3As shown, in the front upper part of the running direction of the composite material strip, the second release film strip L2 and the third protective film strip B3 are firstly composited by another composite roller group, the second release film strip L2 is on the top with its release surface facing upward, and then the second circular knife die-cutting roller group M2 is used for the second die-cutting, and the composite material strip L2 is composited by another composite roller group M3. Figure 4-2 As shown, the second die-cutting is carried out from the top of the material strip, cutting through the second release film material strip L2 and forming an array of second straight line fracture lines M201 along the length direction of the material strip thereon, and immediately peeling off the second release film material strip L2 waste outside the second straight line fracture lines M201 after die-cutting, forming at least one group of parallel and spaced second release film material strips L2; ​​then, after the lower roller of the second circular knife die-cutting roller group M2 is turned over, the second release film material strip L2 is compounded with the material strip after the first die-cutting, so that one of the second release film material strips L2 is compounded on the first release film 3 unit, and the other is compounded on the second protective film material strip B2 adjacent to the first release film 3, and then the third protective film material strip B3 is excluded. At this time, from bottom to top, it is: first protective film material strip B1, second protective film material strip B2, first release film 3 unit, second release film material strip L2;

[0041] like Figure 4-2 As shown, the upper knife roller of the second circular die-cutting roller group M2 is provided with a plurality of second linear blades M21 corresponding to the second linear fracture line M201, so as to divide the second release film strip L2 into two groups of second release film strips arranged at intervals, and in this embodiment, there are two groups, a total of four second release film strips L2 arranged in parallel; the upper knife roller of the second circular die-cutting roller group M2 is provided with a second alignment mark line blade M22 to form the second alignment mark line M202;

[0042] For example Figure 3 As shown, another composite foam material strip P1 and a fourth protective film material strip B4 are started, the foam material strip P1 is on the top, and the fourth protective film material strip B4 is on the bottom, running above the first protective film material strip B1 in the opposite direction of its running direction, passing through the third circular knife die-cutting roller group M3 for the third die-cutting, and combining Figure 4-3 As shown, the third die-cutting is performed by inserting a knife above the foam material strip P1, cutting through the foam material strip P1, forming several third straight line fracture lines M301 along the length direction of the material strip on the foam material strip P1, excluding the foam material strip waste outside each group of third straight line fracture lines M301, and forming several continuous foam material strips on the fourth protective film material strip B4; then, a conductive double-sided adhesive tape D1 is compounded on each foam material strip P1, so that each conductive double-sided adhesive tape D1 completely covers the corresponding foam material strip P1, and after stripping off the self-contained film of the conductive double-sided adhesive tape D1, the third release film tape L3 is compounded on the conductive double-sided adhesive tape D1, and then the fourth die-cutting is performed by the fourth circular knife die-cutting roller group M4; as shown Figure 4-4As shown, the fourth die-cutting is performed from above the third release film tape L3, and cuts through the conductive double-sided adhesive tape D1 and the foam tape P1 to form a plurality of conductive double-sided adhesive layer contour lines M401 and block foam contour lines, and then the conductive double-sided adhesive tape waste and foam tape waste outside the conductive double-sided adhesive layer contour line M401 are removed, and the waste of the third release film tape within the conductive double-sided adhesive layer contour line M401 is removed through the first row of waste tapes F1; after the waste is removed, the composite tape Turn it over and compound it with the main material tape carried by the first protective film material tape B1, so that the two ends of the conductive double-sided adhesive layer 2 are respectively compounded with the two second release film material tapes L2 carried by the first protective film material tape B1, and the middle part of the conductive double-sided adhesive layer 2 is bonded and compounded with the exposed first release film L1; at this time, from bottom to top, it is: the first protective film material tape B1, the second protective film material tape B2, the first release film 3, the second release film material tape L2, the conductive double-sided adhesive layer 2, the block foam 1, and the fourth protective film material tape B4;

[0043] like Figure 4-3 As shown, the upper knife roller of the third circular die-cutting roller group M3 is provided with a plurality of third linear blades M31 corresponding to the third linear fracture line M301, so as to divide the foam material strip P1 into two foam material strips, and the upper knife roller of the third circular die-cutting roller group M3 is provided with a third alignment mark line blade M32 to form the third alignment mark line M302;

[0044] like Figure 4-4 As shown, the upper knife roller of the fourth circular die-cutting roller group M4 is provided with a plurality of double-sided adhesive contour line blades M41 corresponding to the conductive double-sided adhesive layer contour line M401, so that a plurality of conductive double-sided adhesive layers 2 are formed each time the operation is performed, and the fourth circular die-cutting roller group M4 is also provided with a fourth alignment mark line blade M42 to form the fourth alignment mark line M402;

[0045] Then, after removing the fourth protective film material strip B4, the first release paper material strip L4 is compounded on the block foam 1, and then the bottom first protective film material strip B1 is removed and rolled up to form a semi-finished product; in this embodiment, two rolls of semi-finished product strips C1 are formed and rolled up separately; each roll of semi-finished product is sequentially composed from bottom to top: the second protective film material strip B2, the first release film 3 arranged at intervals, the second release film material strip L2 along the length direction, the conductive double-sided adhesive layer 2, the block foam 1 and the first release paper material strip L4;

[0046] Step 2: Use an automatic wrapping machine to wrap the semi-finished product:

[0047] Combination Figure 5-Figure 7As shown, the automatic wrapping forming machine comprises a machine table 5, a wrapping channel slot plate 6 arranged on the machine table 5, and a front guide wheel mechanism 51 arranged at the edge of the machine table 5 and located at the front end of the wrapping channel slot plate 6; a wrapping channel 601 for the material strip to be wrapped to pass through is provided on the wrapping channel slot plate 6, a first edge starting mechanism 71, a second edge starting mechanism 72, a first edge pressing mechanism 81, and a second edge pressing mechanism 82 are alternately provided on the machine table 5 and on both sides of the wrapping channel slot plate 6, and an edge pressing wheel mechanism 52 is further provided at the end of the wrapping channel slot plate 6 and above the wrapping channel 601; a vacuum adsorption hole 602 is provided at the front section of the wrapping channel slot plate 6 and on the bottom surface of the wrapping channel 601;

[0048] The semi-finished product is unrolled and put into the automatic wrapping and forming machine with the second protective film material strip B2 at the bottom and the first release paper material strip L4 at the top. The first release paper material strip L4 is peeled off and rolled up so that the block foam 1 and the conductive double-sided adhesive layers 2 on both sides are exposed upward, and the second protective film material strip B2 and the composite material thereon enter the wrapping channel;

[0049] The first edge starting mechanism 71 and the second edge starting mechanism 72 respectively have an edge starting curved surface 701, and the second protective film strip B2 at the bottom is adsorbed by the edge starting curved surface 701 and the vacuum adsorption hole 602, so that the two second release film strips L2 on the semi-finished product strip and the two sides of the foam in a horizontal state and the conductive double-sided adhesive layer 2 thereon are gradually transformed from a horizontal state to a vertical state, and the conductive double-sided adhesive layer 2 is adhered and wrapped with the two side walls of the block foam 1; and the second protective film strip B2 and the first release films 3 arranged at intervals pass between the lower surface of the first edge starting plate 711 and the bottom surface of the wrapping channel 601;

[0050] The first edge pressing mechanism 81 and the second edge pressing mechanism 82 respectively have edge pressing curved surfaces 801, through which the second release film strip L2 erected on both sides and the conductive double-sided adhesive layer 2 thereon are folded toward the upper surface of the block foam 1 and finally the conductive double-sided adhesive layer 2 and the second release film strip L2 are compositely wrapped on the upper surface of the block foam 1;

[0051] Finally, the second release film strip L2, the conductive double-sided adhesive layer 2 and the foam are pressed together again by the pressing wheel 521 of the pressing wheel mechanism 52 to complete the wrapping, unloading and winding. When in use, they can be cut as needed, and the second release film 4 and the first release film 3 can be peeled off to allow the foam to fully bond with other products.

[0052] The present invention also provides an automatic wrapping and forming machine used in the above-mentioned process, which comprises a machine table 5, a wrapping channel slot plate 6 arranged on the machine table 5, and a front guide wheel mechanism 51 arranged at the edge of the machine table 5 and located at the front end of the wrapping channel slot plate 6; the wrapping channel slot plate 6 is provided with a wrapping channel 601 for the material strip to be wrapped to pass through, and a first edge starting mechanism 71, a second edge starting mechanism 72, a first edge pressing mechanism 81, and a second edge pressing mechanism 82 are alternately arranged on the machine table 5 and on both sides of the wrapping channel slot plate 6, the first edge starting mechanism 71 and the second edge starting mechanism 72 respectively have a first edge starting plate 711 and its lateral adjustment mechanism 73, a second edge starting plate 721 and its lateral adjustment mechanism 73, the first edge pressing mechanism 81 and the second edge pressing mechanism 82 are respectively It is respectively provided with a first edge pressing plate 811 and its composite adjustment mechanism 83, and a second edge pressing plate 821 and its composite adjustment mechanism 83; the inner end faces of the first edge starting plate 711 and the second edge starting plate 721 respectively have an edge starting curved surface 701, and the inner end faces of the first edge pressing plate 811 and the second edge pressing plate 821 respectively have an edge pressing curved surface 801, and the two side walls of the wrapping channel groove plate 6 are respectively alternately provided with notches 603 for the inner ends of the first edge starting plate 711, the second edge starting plate 721, the first edge pressing plate 811, and the second edge pressing plate 821 to extend into the wrapping channel, and a gap 604 for the feeding belt to pass through is provided between the lower surfaces of the first edge starting plate 711, the second edge starting plate 721, the first edge pressing plate 811, and the second edge pressing plate 821 and the bottom surface of the wrapping channel 601.

[0053] The lateral adjustment mechanism 73 is installed on the machine 5 in a staggered relative manner, and the lateral adjustment mechanism 73 includes a lateral differential head 731 installed on the machine 5, a group of horizontal guide rails 732, a slider 733 arranged on the horizontal guide rails 732, a first stopper 734 installed on the machine 5, and a lateral return spring 735 and a spring shaft 736 connected to the first stopper 734; the first starting plate 711 and the second starting plate 721 are respectively installed on the slider 733, and the outer end faces of the first starting plate 711 and the second starting plate 721 are respectively in contact with the lateral differential head 731, and the inner end faces extend into the wrapping channel 601; the first starting plate 711 and the second starting plate 721 are respectively installed on the slider 733, and the outer end faces of the first starting plate 711 and the second starting plate 721 are respectively in contact with the lateral differential head 731, and the inner end faces extend into the wrapping channel 601; the first starting plate 711 and the second starting plate 721 are respectively installed on the slider 733. The lower surface of the starting edge plate 721 is also connected to a second stopper 737, which contacts the outer end of the transverse return spring 735; that is, the first starting edge plate 711 and the second starting edge plate 721 can move laterally along the horizontal guide rail through the horizontal guide rail 732 and the slider 733, and then the adjustment function of the transverse differential head 731 and the contact and limiting function of the transverse return spring 735 are used to adjust the position of the inner end surface of the first starting edge plate 711 and the second starting edge plate 721 in the wrapping channel 601, so that the inner end surface of the first starting edge plate 711 and the second starting edge plate 721, that is, the starting edge curved surface 701, can be accurately controlled to be located at a position suitable for the material strip to be wrapped;

[0054] The composite adjustment mechanism 83 includes a set of lateral adjustment mechanisms 73 and longitudinal adjustment mechanisms 84, wherein the longitudinal adjustment mechanism 84 includes an angle plate 841 installed on the slider 733 of the lateral adjustment mechanism 73, a horizontal mounting plate 842 connected to the upper end surface of the angle plate 841, a longitudinal differential head 843 connected to the horizontal mounting plate 842, and a longitudinal guide rod assembly 844 passing through the horizontal mounting plate 842; the first edge clamping plate 811 of the first edge clamping mechanism 81 and the second edge clamping plate 821 of the second edge clamping mechanism 82 are respectively connected to the lower ends of the longitudinal guide rod assemblies 844 of their respective composite adjustment mechanisms 83, and the first edge clamping plate 811 and the second edge clamping plate 821 are respectively connected to the lower ends of the longitudinal guide rod assemblies 844 of the ... A longitudinal return spring 845 is respectively provided between 821 and the respective horizontal mounting plates 842. In this embodiment, the longitudinal return spring 845 is sleeved on the periphery of the longitudinal guide rod assembly 844. The upper surfaces of the first edge pressing plate 811 and the second edge pressing plate 821 are respectively in contact with the longitudinal differential head 843; that is, through the composite adjustment mechanism 83, the lateral position of the first edge pressing plate 811 and the second edge pressing plate 821 relative to the wrapping channel 601 can be accurately adjusted laterally, and the longitudinal position of the first edge pressing plate 811 and the second edge pressing plate 821 relative to the wrapping channel 601 can be accurately adjusted longitudinally, so as to meet the wrapping requirements of different specifications of the material strips to be wrapped;

[0055] A vacuum adsorption hole 602 is provided at the front section of the wrapping channel groove plate 6 and the bottom surface of the wrapping channel 601; the vacuum adsorption hole 602 can be used to adsorb the bottom film of the material strip, so that the first edge raising mechanism 71 and the second edge raising mechanism 72 can separate the material strip to be folded and wrapped above;

[0056] A pressing wheel mechanism 52 is provided at the end of the wrapping channel slot plate and above the wrapping channel; the pressing wheel of the pressing wheel mechanism 52 can further press the wrapped material strip to make the product firm. A detachable material guide plate is installed at the end of the wrapping channel slot plate 6 to guide and discharge the wrapped product.

[0057] The present invention adopts the above-mentioned production process, and designs an integrated circular knife die-cutting process for the handle, double-sided tape and foam. Compared with the traditional process of first molding the double-sided tape and foam and then attaching the handle, this process design can better ensure the dimensional accuracy of the product, especially the relative position of the handle and the product. In combination with the use of improved wrapping equipment and processes, the semi-finished material strip can be wrapped together with the handle during wrapping, reducing the production process of attaching the handle separately and simplifying the production process. On the other hand, the wrapping equipment in the present invention can also be used for the wrapping and molding of square products within the specifications. One jig can be used for the wrapping and molding of most products, which greatly reduces the equipment development cost, and the jig is easy to adjust and convenient to operate.

[0058] 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 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 considered to be within the scope of protection of the present invention.

Claims

1. A production process of a conductive adhesive wrapped foam component with a handle, the foam component comprising a block foam, a conductive double-sided adhesive layer wrapped around the upper and lower surfaces of the block foam along both sides, and a first release film is compounded on the outer surface of the conductive double-sided adhesive layer on the upper surface of the block foam, and a second release film is compounded on the outer surface of the conductive double-sided adhesive layer on the lower surface of the block foam, and a gap is formed between the conductive double-sided adhesive layers on the lower surface and the two side surfaces of the block foam; the first release film has a handle portion extending out of the block foam, and the handle portion has a pre-bent line formed at the edge of the block foam; the characteristics are: The production process of the foam component includes step 1: using a high-speed circular knife rotary die-cutting process to produce a semi-finished product: First, the first protective film strip, the second protective film strip, and the first release film strip are compounded in sequence from bottom to top, and the first circular knife die-cutting roller group is used for the first die-cutting. The first die-cutting is performed from the top of the strip, and a first closed contour line and a pre-bending line corresponding to the shape of the first release film and its handle are formed on the first release film strip, and at the same time, several first straight line fracture lines are formed along the length direction of the strip and cut through the second protective film strip; several first alignment marking lines are also formed; after the first die-cutting, the outer frame waste of the first release film strip outside the first closed contour line and the outer edge waste on both sides of the second protective film strip are peeled off; at this time, the composite strips are, from bottom to top, the first protective film strip, the second protective film strip, and the first release film unit; At the front upper part of the running direction of the composite material strip, the second release film material strip and the third protective film material strip are firstly composited by another composite roller group, the second release film material strip is on the top and its release surface faces upward, and then the second circular knife die-cutting roller group performs a second die-cutting, the second die-cutting is carried out from the top of the material strip, the second release film material strip is cut through and an array of second straight line fracture lines along the length direction of the material strip are formed thereon, and the second release film material strip waste outside the second straight line fracture lines is immediately peeled off after die-cutting to form at least one group of parallel and spaced second release film material strips; then the second release film material strip is compounded with the material strip after the first die-cutting after the lower roller of the second circular knife die-cutting roller group is turned over, so that one of the second release film material strips is compounded on the first release film unit, and the other is compounded on the second protective film material strip adjacent to the first release film, and then the third protective film material strip is excluded, at this time, from bottom to top, it is: first protective film material strip, second protective film material strip, first release film unit, second release film material strip; A composite foam material strip and a fourth protective film material strip are started, with the foam material strip on top and the fourth protective film material strip on the bottom, and they run above the first protective film material strip in the opposite direction to the running direction thereof, and are die-cut for the third time by the third circular knife die-cutting roller group. The knife is inserted above the foam material strip for the third die-cutting, and the foam material strip is cut through to form several third straight line fracture lines along the length direction of the material strip on the foam material strip, and the foam material strip waste outside each group of third straight line fracture lines is excluded to form several continuous foam material strips on the fourth protective film material strip; then, a conductive double-sided adhesive tape is compounded on each foam material strip, so that each conductive double-sided adhesive tape completely covers the corresponding foam material strip, and after compounding the third release film tape on the conductive double-sided adhesive tape, the fourth die-cutting is performed by the fourth circular knife die-cutting roller group; the fourth die-cutting starts from the third release film tape. The knife is inserted above the release film tape, and cuts through the conductive double-sided adhesive tape and the foam tape to form several conductive double-sided adhesive layer contour lines and block foam contour lines, and then the conductive double-sided adhesive tape waste and foam tape waste outside the conductive double-sided adhesive layer contour line are removed, and then the waste of the third release film tape within the conductive double-sided adhesive layer contour line is removed through the first row of waste tapes; after the waste is removed, the composite tape is turned over and compounded with the main tape carried by the first protective film tape, so that the two ends of the conductive double-sided adhesive layer are respectively compounded with the two second release film tapes carried by the first protective film tape, and the middle part of the conductive double-sided adhesive layer is bonded and compounded with the exposed first release film; at this time, from bottom to top, it is: the first protective film tape, the second protective film tape, the first release film, the second release film tape, the conductive double-sided adhesive layer, the block foam, and the fourth protective film tape; After removing the fourth protective film tape, the first release paper tape is compounded on the block foam, and after removing the bottom first protective film tape, the semi-finished product is rolled up; that is, each roll of the semi-finished product comprises, from bottom to top, the second protective film tape, the first release film arranged at intervals, the second release film tape along the length direction, the conductive double-sided adhesive layer, the block foam and the first release paper tape; Step 2: Use an automatic wrapping machine to wrap the semi-finished product: The automatic wrapping forming machine comprises a machine platform, a wrapping channel slot plate arranged on the machine platform, and a front guide wheel mechanism arranged at the edge of the machine platform and located at the front end of the wrapping channel slot plate; the wrapping channel slot plate is provided with a wrapping channel for the material strip to be wrapped to pass through, and a first edge raising mechanism, a second edge raising mechanism, a first edge pressing mechanism, and a second edge pressing mechanism are alternately arranged on the machine platform and on both sides of the wrapping channel slot plate; The semi-finished product is unrolled and put into the automatic wrapping and forming machine with the second protective film tape at the bottom and the first release paper tape at the top. The first release paper tape is peeled off and rolled up so that the block foam and the conductive double-sided adhesive layers on both sides are exposed upward, and the second protective film tape and the composite material thereon enter the wrapping channel; The first edge raising mechanism and the second edge raising mechanism respectively have edge raising curved surfaces, through which the two second release film strips on the semi-finished product strip and the two sides of the foam in a horizontal state and the conductive double-sided adhesive layer thereon are gradually transformed from a horizontal state to a vertical state, and the conductive double-sided adhesive layer is bonded and wrapped with the two side walls of the foam; and the second protective film strip and the first release films arranged at intervals pass between the lower surfaces of the first edge raising mechanism and the second edge raising mechanism and the bottom surface of the wrapping channel; The first edge pressing mechanism and the second edge pressing mechanism respectively have edge pressing curved surfaces, through which the second release film strips erected on both sides and the conductive double-sided adhesive layer thereon are folded toward the upper surface of the foam, and finally the conductive double-sided adhesive layer and the second release film strips are compositely wrapped on the upper surface of the foam, completing the wrapping, unloading and winding.

2. The production process of the conductive adhesive wrapped foam component with a handle according to claim 1, characterized in that: The upper blade roller of the first circular die-cutting roller group is provided with a plurality of first closed contour blades corresponding to the shape of the first release film and its handle portion, three first straight blades, and three first alignment mark line blades; the first closed contour blades are evenly arranged along the circumferential direction of the blade roller; a dotted line blade is provided inside the first closed contour blade and at the inner root of the corresponding handle portion; The upper knife roller of the second circular knife die-cutting roller group is provided with a plurality of second straight blades corresponding to the second straight fracture lines; the upper knife roller of the second circular knife die-cutting roller group is provided with a second alignment marking line blade; The upper knife roller of the third circular knife die-cutting roller group is provided with a plurality of third straight line blades and a third alignment marking line blade corresponding to the third straight line fracture line; The upper knife roller of the fourth circular die-cutting roller group is provided with a plurality of double-sided adhesive contour line blades corresponding to the contour line of the conductive double-sided adhesive layer and a fourth alignment marking line blade.

3. The production process of the conductive adhesive wrapped foam component with a handle according to claim 1, characterized in that: The first edge starting mechanism and the second edge starting mechanism respectively have a first edge starting plate and a lateral adjustment mechanism, and a second edge starting plate and a lateral adjustment mechanism; the first edge pressing mechanism and the second edge pressing mechanism respectively have a first edge pressing plate and a composite adjustment mechanism, and a second edge pressing plate and a composite adjustment mechanism; the two side walls of the wrapping channel groove plate are respectively alternately provided with notches for the first edge starting mechanism, the second edge starting mechanism, the first edge pressing mechanism, and the second edge pressing mechanism to extend into the wrapping channel.

4. The production process of the conductive adhesive wrapped foam component with a handle according to claim 3, characterized in that: The lateral adjustment mechanism is installed on the machine platform in an offset relative manner, and the lateral adjustment mechanism includes a lateral differential head installed on the machine platform, a group of horizontal guide rails, a slider arranged on the horizontal guide rails, a first stop block installed on the machine platform, and a lateral return spring and a spring shaft connected to the first stop block; the first side starting plate and the second side starting plate are respectively installed on the slider, and the outer end faces of the first side starting plate and the second side starting plate are respectively in contact with the lateral differential head, and the inner end faces extend into the wrapping channel; the lower surfaces of the first side starting plate and the second side starting plate are also respectively connected to a second stop block, and the second stop block is in contact with the outer end of the lateral return spring.

5. The production process of the conductive adhesive wrapped foam component with a handle according to claim 3 or 4, characterized in that: The compound adjustment mechanism includes a group of lateral adjustment mechanisms and longitudinal adjustment mechanisms. The longitudinal adjustment mechanism includes an angle plate installed on the slider of the lateral adjustment mechanism, a horizontal mounting plate connected to the upper end surface of the angle plate, a longitudinal differential head connected to the horizontal mounting plate, and a longitudinal guide rod assembly arranged on the horizontal mounting plate; the first edge clamping plate of the first edge clamping mechanism and the second edge clamping plate of the second edge clamping mechanism are respectively connected to the lower ends of the longitudinal guide rod assemblies of their respective compound adjustment mechanisms, and longitudinal return springs are respectively provided between the first edge clamping plate, the second edge clamping plate and their respective horizontal mounting plates, and the upper surfaces of the first edge clamping plate and the second edge clamping plate are respectively in contact with the longitudinal differential head.

6. An automatic wrapping and forming machine, characterized in that: The automatic wrapping forming machine comprises a machine platform, a wrapping channel slot plate arranged on the machine platform, and a front guide wheel mechanism arranged at the edge of the machine platform and located at the front end of the wrapping channel slot plate; the wrapping channel slot plate is provided with a wrapping channel for the material strip to be wrapped to pass through, and a first edge starting mechanism, a second edge starting mechanism, a first edge pressing mechanism, and a second edge pressing mechanism are alternately arranged on the machine platform and on both sides of the wrapping channel slot plate, the first edge starting mechanism and the second edge starting mechanism respectively have a first edge starting plate and a lateral adjustment mechanism thereof, a second edge starting plate and a lateral adjustment mechanism thereof, and the first edge pressing mechanism and the second edge pressing mechanism are respectively It is respectively provided with a first edge holding plate and its composite adjustment mechanism, a second edge holding plate and its composite adjustment mechanism; the inner end faces of the first edge starting plate and the second edge starting plate respectively have edge starting curved surfaces, and the inner end faces of the first edge holding plate and the second edge holding plate respectively have edge holding curved surfaces, and the two side walls of the wrapping channel groove plate are respectively alternately provided with notches for the inner ends of the first edge starting plate, the second edge starting plate, the first edge holding plate, and the second edge holding plate to extend into the wrapping channel, and there is a gap between the lower surfaces of the first edge starting plate, the second edge starting plate, the first edge holding plate, and the second edge holding plate and the bottom surface of the wrapping channel for the feeding belt to pass through.

7. The automatic wrapping and forming machine according to claim 6, characterized in that: The lateral adjustment mechanism is installed on the machine platform in an offset relative manner, and includes a lateral differential head installed on the machine platform, a group of horizontal guide rails, a slider arranged on the horizontal guide rails, a first stop block installed on the machine platform, and a lateral return spring and a spring shaft connected to the first stop block; the first side starting plate and the second side starting plate are respectively installed on the slider, and the outer end faces of the first side starting plate and the second side starting plate are respectively in contact with the lateral differential head, and the inner end faces extend into the wrapping channel; the lower surfaces of the first side starting plate and the second side starting plate are also respectively connected to a second stop block, and the second stop block is in contact with the outer end of the lateral return spring.

8. The automatic wrapping and forming machine according to claim 6 or 7, characterized in that: The compound adjustment mechanism includes a group of lateral adjustment mechanisms and longitudinal adjustment mechanisms. The longitudinal adjustment mechanism includes an angle plate installed on the slider of the lateral adjustment mechanism, a horizontal mounting plate connected to the upper end surface of the angle plate, a longitudinal differential head connected to the horizontal mounting plate, and a longitudinal guide rod assembly arranged on the horizontal mounting plate; the first edge clamping plate of the first edge clamping mechanism and the second edge clamping plate of the second edge clamping mechanism are respectively connected to the lower ends of the longitudinal guide rod assemblies of their respective compound adjustment mechanisms, and longitudinal return springs are respectively provided between the first edge clamping plate, the second edge clamping plate and their respective horizontal mounting plates, and the upper surfaces of the first edge clamping plate and the second edge clamping plate are respectively in contact with the longitudinal differential head.

9. The automatic wrapping and forming machine according to claim 6, characterized in that: Vacuum adsorption holes are provided on the front section of the wrapping channel groove plate and the bottom surface of the wrapping channel.

10. The automatic wrapping and forming machine according to claim 6, characterized in that: A pressing wheel mechanism is also provided at the end of the wrapping channel groove plate and above the wrapping channel.

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