Double-layer adhesive film processing equipment, processing technology and aluminum-based copper-clad plate

Abstract

The invention discloses double-layer adhesive film processing equipment, a processing technology and an aluminum-based copper-clad plate, the double-layer adhesive film processing equipment comprises a box body, a base and a cover plate, and the box body is provided with a feeding part, an adhesive coating part, a pre-drying part and an extrusion forming part according to a process flow zone. Through mutual cooperation of the conveying assembly, the bending assembly, the gluing part, the pre-drying part, the extrusion forming part and other working areas, forming of the double-layer glue film can be automatically completed; and the glue film adopts a wire rod coating form, the thickness of each layer of glue film can be controlled to be 25 microns, and meanwhile, the viscosity of the glue is controlled to be 1500-3500 mpa.s, so that the viscosity can ensure that the glue cannot quickly flow due to the influence of gravity after coating, and the overall thickness can be ensured to be uniform after pre-drying and extrusion forming.

Description

Technical Field

[0001] The invention relates to the technical field of copper clad laminate technology, and in particular to double-layer adhesive film processing equipment, a processing technology and an aluminum-based copper clad laminate. Background Art

[0002] Aluminum-based copper-clad laminate, also known as aluminum substrate, is a kind of raw material. It is a plate-like material made of electronic glass fiber cloth or other reinforcing materials impregnated with resin, single resin, etc. as an insulating adhesive layer, covered with copper foil on one side or both sides and hot-pressed. It is called copper-clad laminated aluminum substrate, abbreviated as aluminum-based copper-clad laminate.

[0003] In the copper clad laminate industry, an insulating layer is set between the substrate and the copper foil. Generally, the insulating layer uses a thermal conductive adhesive film and is coated in the form of a scraper. However, this coating method can only control the thickness of the insulating layer to more than 60um, and the thermal conductivity is relatively insufficient. Summary of the invention

[0004] The present invention is mainly for solving the problem of insulating layer thickness, and particularly proposes a double-layer adhesive film processing equipment, a processing technology and an aluminum-based copper-clad laminate.

[0005] A double-layer adhesive film processing equipment; comprising a box body, a base, and a cover plate, the box body is divided into a feeding part, a gluing part, a pre-drying part, and an extrusion forming part according to the process flow; the feeding part includes two groups of feeding ports, and two groups of adhesive tapes enter the box body through the feeding part; the gluing part applies thermal conductive adhesive on the lower surface of the adhesive tape, and the gluing part includes a glue box and a wire rod; the pre-drying part is used to pre-dry the applied adhesive and push out the adhesive film obtained after pre-drying, and the two groups of adhesive tapes are pressed and pressed together with the sides coated with thermal conductive adhesive through the extrusion forming part; the cover plate is provided with a transport component and a folding component; two groups of transport components are provided, which are used to transport the adhesive tape entering the box body to the gluing part and the pre-drying part in turn; the folding component is used to fold the adhesive tape that has been transported to the pre-drying part and has been glued, and complete the pre-drying work in the pre-drying part.

[0006] The transport assembly includes a slide rail, a guide rod, a connecting rod, a support frame, and a clamping mechanism; the slide rail is arranged on the front and rear inner walls of the cover plate; the guide rod is arranged on the top inner wall of the cover plate, and there are two guide rods, which are arranged along the transport direction of the tape; the connecting rod is arranged in the cover plate, the connecting rod is away from the guide rod, and the connecting rod and the guide rod respectively pass through the two ends of the clamping mechanism, and the clamping mechanism is slidably connected between the connecting rod and the guide rod; the slide rail is slidably connected with a support frame, and the end of the support frame extending away from the slide rail is close to the clamping mechanism, and is used to support and drive the clamping mechanism to slide.

[0007] The clamping mechanism can slide along the connecting rod, the length of which is slightly longer than the length of the tape. Two sets of limit blocks are arranged on the connecting rod to limit the sliding range of the clamp on the connecting rod; two sets of clamping mechanisms are slidably connected on the connecting rod.

[0008] The clamping mechanism includes a clamping plate, a movable clamping block, and a sliding column; the movable clamping block is provided with two groups, and the two groups of movable clamping blocks are respectively slidably connected to the guide rod and the connecting rod; the two groups of movable clamping blocks are equipped with clamping plates through the sliding column, one end of the sliding column is fixedly connected to the clamping plate, and the sliding column passes through one end of the movable clamping block and is provided with a protrusion, and an elastic member is provided between the protrusion and the movable clamping block, and under normal conditions, the elastic member is in a stretched state; the support frame includes a slider, a telescopic rod, and a fork arm; the slider is slidably connected to the slide rail, and a telescopic rod is provided at the end of the slider away from the slide rail, and a fork arm is connected to the end of the telescopic rod away from the slider; the fork arm moves with the telescopic rod, and after the telescopic rod is extended, it can be inserted between the protrusion and the movable clamping block, and drive the sliding column to move downward, so that the clamping plate is pressed tightly against the movable clamping block.

[0009] The folding assembly includes a lifting mechanism and a connecting plate; there are two groups of lifting mechanisms, the lifting mechanisms are arranged at the upper end of the cover plate, and the output ends of the two groups of lifting mechanisms pass through the cover plate and are respectively fixedly connected to the two ends of the connecting plate; a movable groove is opened in the middle of the connecting plate, and the height of the movable groove is slightly larger than the diameter of the connecting rod. When the tape is transported as a whole to the pre-drying area, one end of the connecting rod is inserted into the movable groove of the connecting plate.

[0010] The pre-drying machine includes a dryer, a first rotating guide rail, and a second rotating guide rail; the dryer is arranged in a vertical direction, and both sides of the dryer in the vertical direction can be dried; the first rotating guide rail and the second rotating guide rail are arranged on the left and right sides of the dryer respectively; the first rotating guide rail is close to the connecting plate, and when the connecting rod is inserted into the movable groove of the connecting plate, the connecting rod is also synchronously inserted into the guide groove of the first rotating guide rail; the movable area of ​​the second rotating guide rail is consistent with the first rotating guide rail, and the upper end of the second rotating guide rail is in an open state. When the connecting rod slides along the first rotating guide rail, it can also fall into the guide groove of the second rotating guide rail.

[0011] A support plate is provided at the lower end of the dryer. When the adhesive tape rotates to a vertical direction along with the connecting rod, the support plate is inserted between the adhesive tape and the connecting rod.

[0012] The pre-dried portion is also provided with a pushing mechanism, and a pushing plate matching the width of the tape is installed at the pushing end of the pushing mechanism for pushing the pre-dried tape to the extrusion molding portion.

[0013] The extrusion molding part includes a rotating motor, two groups of rotating rollers, a driving gear, a transmission gear, and a guide plate; the lower output end of the rotating motor is connected with the driving gear, the upper end of the rotating roller is fixed with a transmission gear, and the driving gear and the transmission gear are meshed; the guide plate is located at the output end of the pre-dried tape, and the two groups of pre-dried tapes pushed out by the pushing mechanism are pasted through the guide plate and transported to between the two groups of rotating rollers for lamination.

[0014] The double-layer film processing technology includes the following steps: The two sets of tapes are transported to the feeding part through the external conveying mechanism, clamped and transported by the transport component, and passed through the gluing part to control the viscosity of the glue in the glue box to be 1500-3500mpa.s. The glue is coated by the wire rod so that both sets of tapes are coated with a layer of glue film with a thickness of about 25um. The coated tape is sent to the pre-drying section along with the transport assembly, and the two sets of tapes are turned from horizontal to vertical by the folding assembly, pre-dried by the dryer in the pre-drying section, and then pushed out to the extrusion molding section; Through the extrusion forming part, the film surfaces of the two sets of tapes are bonded to each other to form a double-layer film.

[0015] An aluminum-based copper-clad laminate is formed by adopting a double-layer adhesive film.

[0016] Beneficial effects: 1. Based on the equipment of the present invention, the forming of a double-layer adhesive film can be automatically completed through the mutual cooperation of working areas such as the transport component, the bending component, the gluing part, the pre-drying part and the extrusion molding part; and the adhesive film is coated in the form of a wire rod, and the thickness of each layer of the adhesive film can be controlled at 25um. At the same time, the viscosity of the glue is controlled at 1500-3500mpa.s. Such a viscosity can ensure that after coating, the glue will not flow quickly due to the influence of gravity, ensuring that the overall thickness can be uniform after pre-drying and extrusion molding.

[0017] 2. Conventional double-layer adhesive films are directly scraped twice. On the one hand, the thickness cannot be guaranteed. On the other hand, once the adhesive is thick, defects such as pores are prone to occur, which in turn affects the pressure resistance and thermal conductivity. For this reason, we use the form of tape coating to control the thickness of each layer at 25um, which can effectively reduce defects such as pores. At the same time, because two sets of tapes are pressed together, through the pressing of the two sets of coated surfaces, the two sets of coated surfaces can also complement each other's defects, effectively ensuring the overall thickness while ensuring the pressure resistance and thermal conductivity.

[0018] 3. After the double-layer film is formed, it can be used after the two layers of tape are torn off. At this time, there are tapes on both sides of the double-layer film, and they are tightly attached to the tapes. After tearing off the tapes, the upper and lower surfaces of the double-layer film can be ensured to be flat without surface defects. When the double-layer film is set between the aluminum substrate and the copper plate, the surface is uneven and gaps appear, which affects the pressure resistance and thermal conductivity of the overall aluminum-based copper-clad laminate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Legend: Figure 1 This is a structural diagram of the processing equipment of the present invention; Figure 2 It is an oblique view of the processing equipment of the present invention; Figure 3 This is a diagram showing the internal structure of the processing equipment box of the present invention; Figure 4 This is a structural diagram of the cover plate of the processing equipment of the present invention; Figure 5 It is a structural diagram of the transport component of the present invention; Figure 6 This is a structural diagram of the clamping part of the present invention; Figure 7 It is the structural diagram of the preliminary body of the present invention; Figure 8 This is a structural diagram of the drying part of the present invention; Fig. 9 This is a feeding state diagram of the equipment of the present invention; Fig.10 Complete the feeding state diagram for the device of the present invention; Fig.11 This is a coating state diagram of the wire rod of the device of the present invention; Fig.12 This is a state diagram of the device of the present invention before pre-drying; Fig.13 This is a diagram of the pre-drying state of the device of the present invention; Fig.14 This is a structural diagram of the drying part in the pre-drying state of the present invention.

[0021] Description of Reference Numerals: 1. Box body; 11. Feeding part; 12. Gluing part; 121. Glue box; 122. Wire rod; 13. Pre-drying part; 131. Drying machine; 1311. Support plate; 132. First rotating guide rail; 133. Second rotating guide rail; 134. Pushing mechanism; 1341. Pushing plate; 14. Extrusion molding part; 141. Rotating motor; 142. Rotating roller; 143. Driving gear; 144. Transmission gear; 145. Guide plate; 2. Base; 3. Cover plate; 31. Lifting mechanism; 32. Connecting plate; 33. Slide rail; 34. Guide rod; 35. Connecting rod; 351. Limit block; 36. Support frame; 361. Sliding block; 362. Telescopic rod; 363. Fork arm; 37. Clamping mechanism; 371. Clamping plate; 372. Movable clamping block; 373. Sliding column; DETAILED DESCRIPTION The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Specifically, the present invention provides a double-layer film processing equipment; it includes a box body 1, a base 2, and a cover plate 3, and the box body 1 is divided into a feeding part 11, a gluing part 12, a pre-drying part 13, and an extrusion molding part 14 according to the process flow; the feeding part 11 includes two groups of feeding ports, and two groups of tapes enter the box body 1 through the feeding part 11; the gluing part 12 applies thermal conductive glue on the lower surface of the tape, and the gluing part 12 includes a glue box 121 and a wire rod 122; the pre-drying part 13 is used to pre-dry the glue after coating, and push out the glue film obtained after pre-drying, and through the extrusion molding part 14, the two groups of tapes are tightly pressed together with the sides coated with thermal conductive glue; a transport component and a folding component are provided on the cover plate 3; two groups of transport components are provided, which are used to transport the tape entering the box body 1 to the gluing part 12 and the pre-drying part 13 in turn; the folding component is used to fold the tape that is transported to the pre-drying part 13 and has been glued, and complete the pre-drying work in the pre-drying part 13.

[0023] In one embodiment, referring to Figure 1-2 As shown, two groups of adhesive tapes enter the box body 1 through the feeding part 11 , and the first group of transport components clamps the adhesive tapes and transports them to the gluing part 12 and the pre-drying part 13 .

[0024] The glue coating section 12 coats a glue film with a thickness of about 25 um on the lower end surface of the tape by means of a wire rod coating, and the tape enters the pre-drying section 13. The coated tape is adjusted from a horizontal direction to a vertical direction by a folding assembly, and the pre-drying section 13 performs a pre-drying treatment. The pre-drying temperature is set at 140°C for 10 minutes. After the pre-drying is completed, the two groups of tapes are transported to the extrusion molding section 14. The coated surfaces of the two groups of tapes are arranged opposite to each other. The two groups of tapes are pressed and combined by the extrusion molding section 14 to finally form a double-layer adhesive film.

[0025] The transport assembly includes a slide rail 33, a guide rod 34, a connecting rod 35, a support frame 36, and a clamping mechanism 37; the slide rail 33 is arranged on the front and rear inner walls of the cover plate 3; the guide rod 34 is arranged on the top inner wall of the cover plate 3, and there are two guide rods 34, which are arranged along the transport direction of the tape; the connecting rod 35 is arranged in the cover plate 3, the connecting rod 35 is away from the guide rod 34, and the connecting rod 35 and the guide rod 34 respectively pass through the two ends of the clamping mechanism 37, and the clamping mechanism 37 is slidably connected between the connecting rod 35 and the guide rod 34; the slide rail 33 is slidably connected with a support frame 36, and the end of the support frame 36 extending away from the slide rail is close to the clamping mechanism 37, and is used to support and drive the clamping mechanism 37 to slide.

[0026] In one embodiment, referring to Figure 4-5 The slide rail 33 is arranged on the transport component, and the support frame 36 is arranged on the slide rail. When transportation is required, the support frame 36 extends out and supports the column clamping mechanism 37. The clamping mechanism 37 is provided with two groups. When the tape enters the box, the first group of clamping mechanisms 37 clamps one end of the tape and moves along the guide rod 34 and the connecting rod 35. After the set tape length is reached, the second group of clamping mechanisms 37 clamps. A cutting device is arranged outside the box to cut and separate the tape inside the box and the tape outside the box. At this time, the tape between the two groups of clamping mechanisms 37 is the tape that needs to be coated.

[0027] During transportation, the support frame 36 drives the clamping mechanism 37 to be transported along the direction of the guide rod 34 and the slide rail 33 .

[0028] The clamping mechanism 37 can slide along the connecting rod 35, the length of the connecting rod 35 is slightly longer than the length of the tape, and two groups of limit blocks 351 are provided on the connecting rod 35 to limit the sliding range of the clamping mechanism 37 on the connecting rod 35; two groups of clamping mechanisms 37 are slidably connected to the connecting rod 35.

[0029] In one embodiment, if Figure 10-12 As shown, two groups of limit blocks 351 are provided on the connecting rod 35, and the movement range of the clamping mechanism 37 in the connecting rod 35 is the area between the two groups of limit blocks 351. When the two groups of clamping mechanisms 37 are respectively pressed against the two groups of limit blocks 351, as the support frame 36 drives the clamping mechanism 37 to move, it can also synchronously drive the connecting rod 35 to move together.

[0030] The clamping mechanism 37 includes a clamping plate 371, a movable clamping block 372, and a sliding column 373; the movable clamping block 372 is provided with two groups, and the two groups of movable clamping blocks 372 are respectively slidably connected to the guide rod 34 and the connecting rod 35; the clamping plate 371 is installed on the two groups of movable clamping blocks 372 through the sliding column 373, one end of the sliding column 373 is fixedly connected to the clamping plate 371, and the sliding column 373 passes through one end of the movable clamping block 372 and is provided with a protrusion, and an elastic member is provided between the protrusion and the movable clamping block 372, and the elastic member is in a stretched state in a normal state; The support frame 36 includes a slider 361, a telescopic rod 362, and a fork arm 363; the slider 361 is slidably connected to the slide rail 33, and the end of the slider 361 away from the slide rail 33 is provided with a telescopic rod 362, and the end of the telescopic rod 362 away from the slider 361 is connected to the fork arm 363; the fork arm 363 moves with the telescopic rod 362, and after the telescopic rod 362 is extended, it can be inserted between the protrusion and the movable clamping block 372, and drive the sliding column 373 to move downward, so that the clamping plate 371 is tightly pressed against the movable clamping block 372.

[0031] In one embodiment, Figure 6As shown, when it is necessary to clamp and drive the entire tape for transportation, the telescopic rod 362 extends out and drives the fork arm 363 to move. The fork arm 363 is inserted between the protrusion and the movable clamp block 372, and drives the clamp plate 371 to be pressed down to fit the movable clamp block 372. A clamping interval is formed between the small protrusion set on the movable clamp block 372 and the clamp plate 371, which can effectively clamp the tape.

[0032] Elastic friction components can be provided on the clamping plate 371 and the small boss to ensure that the adhesive tape is clamped without damaging the adhesive tape.

[0033] In the present invention, an elastic member is provided between the protrusion and the movable clamping block 372. Under normal conditions, the elastic member is in a slightly stretched state. This ensures that under normal conditions, the splint 371 will not be affected by gravity and pressed on the movable clamping block 372, thereby affecting the entry of the tape. At the same time, the setting of the elastic member can also allow the splint 371 to be away from the movable clamping block 372 when the fork arm 363 is pulled out from the clamping mechanism 37, thereby releasing the tape.

[0034] The folding assembly includes a lifting mechanism 31 and a connecting plate 32; there are two groups of lifting mechanisms 31, and the lifting mechanisms 31 are arranged at the upper end of the cover plate 3. The output ends of the two groups of lifting mechanisms 31 pass through the cover plate 3 and are respectively fixedly connected to the two ends of the connecting plate 32; a movable groove is opened in the middle of the connecting plate 32, and the height of the movable groove is slightly larger than the diameter of the connecting rod 35. When the tape is transported as a whole to the pre-drying area, one end of the connecting rod 35 is inserted into the movable groove of the connecting plate 32.

[0035] In one embodiment, referring to Figure 7 , Figure 8 as well as Fig.13 When folding is required, the tape is transported to the pre-drying part 13 along with the overall transport assembly, and the test connecting rod 35 is inserted into the movable groove of the connecting plate 32. At this time, the lifting mechanism 31 drives the connecting plate 32 to move downward. Since the guide rod 34 is fixed on the cover plate 3, during the downward movement of the connecting plate, the clamping mechanism 37 will rotate downward with the guide rod 34 as the center of the circle, and the connecting rod 35 can also slide in the movable groove. The connecting plate 32 provides a supporting and stable effect for the overall rotation process structure. Finally, the action process of rotating the coated tape from horizontal to vertical direction is realized.

[0036] The pre-drying machine 13 includes a dryer 131, a first rotating guide rail 132, and a second rotating guide rail 133; the dryer 131 is arranged in a vertical direction, and both sides of the dryer 131 in the vertical direction can be dried; the first rotating guide rail 132 and the second rotating guide rail 133 are arranged on the left and right sides of the dryer respectively; the first rotating guide rail 132 is close to the connecting plate 32, and when the connecting rod 35 is inserted into the movable groove of the connecting plate 32, the connecting rod 35 is also synchronously inserted into the guide groove of the first rotating guide rail 132; the movable area of ​​the second rotating guide rail 133 is consistent with the first rotating guide rail 132, and the upper end of the second rotating guide rail 133 is in an open state. When the connecting rod 35 slides along the first rotating guide rail 132, it can also fall into the guide groove of the second rotating guide rail 133.

[0037] In one embodiment, referring to Figure 7 The dryer 131 can pre-dry the tape rotated in a vertical direction, control the glue to flow with gravity, and ensure the uniformity of the overall lamination.

[0038] During the rotation process, the first rotating guide rail 132 and the second rotating guide rail 133 can cooperate with the connecting plate 32 to provide a supporting effect to the connecting rod 35, thereby improving the stability of the overall rotation.

[0039] A support plate 1311 is provided at the lower end of the dryer 131 . When the adhesive tape rotates to a vertical direction along with the connecting rod 35 , the support plate 1311 is inserted between the adhesive tape and the connecting rod 35 .

[0040] In one embodiment, referring to Figure 8 , Fig.14 A support plate 1311 is provided, which can be inserted between the tape and the connecting rod 35. Since the clamping mechanism 37 is in a relaxed state during the rotation process, the support plate 1311 can support the tape to prevent deviation.

[0041] An elastic component is also provided at the lower end of the support plate 1311, which can give the support plate an upward thrust. When the support plate 1311 supports the adhesive tape, the upward thrust can make the coated adhesive tape relatively stable without deviation.

[0042] The pre-dried portion 13 is further provided with a pushing mechanism 134 , and a pushing plate 1341 matching the width of the adhesive tape is installed at the pushing end of the pushing mechanism 134 for pushing the pre-dried adhesive tape to the extrusion molding portion 14 .

[0043] In one embodiment, Figure 3 As shown, the pushing mechanism 134 can push out the pre-dried adhesive tape and enter the extrusion molding part 14 to complete the lamination of the double-layer adhesive film.

[0044] In one embodiment, the overall folding process is described with reference to the accompanying drawings. First, the transport assembly transports the adhesive tape to the pre-drying portion 13. At this time, one end of the connecting rod 35 passes through the first rotating guide rail 132 and is inserted into the movable groove of the connecting plate 32. The telescopic rod 362 of the control support frame 36 is retracted, and the fork arm 363 is pulled out from the position of the clamping mechanism 37, and the clamping mechanism 37 is released. At this time, the connecting rod 35 is fully supported by the right connecting plate 32. As the lifting mechanism 31 drives the connecting plate 32 to move downward, the end of the connecting rod 35 away from the connecting plate 32 can fall into the second rotating guide rail 133, and slides along the first rotating guide rail 132 and the second rotating guide rail 133 during the downward movement. Finally, the adhesive tape rotates from the horizontal direction to the vertical direction.

[0045] The extrusion molding part 14 includes a rotating motor 141, two groups of rotating rollers 142, a driving gear 143, a transmission gear 144, and a guide plate 145; the lower output end of the rotating motor 141 is connected to the driving gear 143, and the upper end of the rotating roller 142 is fixed with a transmission gear 144, and the driving gear 143 and the transmission gear 144 are meshed; the guide plate 145 is located at the output end of the pre-drying portion 13, and the two groups of pre-dried tapes pushed out by the pushing mechanism 134 are attached through the guide plate 145 and transported to between the two groups of rotating rollers 142 for lamination.

[0046] In one embodiment, referring to the attached Figure 3 The rotating motor 141 drives the driving gear 143 to rotate, and the transmission gear 144 meshes with the driving gear 143 and drives the two sets of rotating rollers 142 to rotate. When the pre-dried tape passes through the guide plate 145 and enters the working range of the rotating roller 142, the two sets of tapes are pressed together by the rotation of the rotating roller 142 to form the final double-layer adhesive film.

[0047] The double-layer film processing technology includes the following steps: The two sets of adhesive tapes are transported to the feeding part 11 through the external conveying mechanism, and are clamped and transported by the transport component. After passing through the glue coating part 12, the viscosity of the glue in the glue box 121 is controlled to be 1500-3500mpa.s, and the glue is coated by the wire rod 122, so that the two sets of adhesive tapes are coated with a layer of glue film with a thickness of about 25um. The coated tape is sent to the pre-drying section 13 by the transport assembly, and the two sets of tapes are turned from horizontal to vertical by the folding assembly, and pre-dried by the dryer 131 of the pre-drying section 13, and then pushed out to the extrusion molding section 14; Through the extrusion molding unit 14, the adhesive film surfaces of the two sets of adhesive tapes are bonded to each other to form a double-layer adhesive film.

[0048] Specifically, after the two groups of tapes enter the feeding section 11, when the end of each group of tapes is located in the working range of a group of clamping mechanisms 37, the telescopic rod 362 is controlled to drive the fork arm 363 to extend, the fork arm 363 is inserted between the protrusion and the movable clamp block 372, and the sliding column 373 is pulled to drive the clamp plate 371 to move downward, and the clamp plate 371 is finally pressed tightly against the movable clamp block 372, and cooperates with the small boss of the movable clamp block 372 to clamp the tape.

[0049] At this time, a group of support frames 36 is started to drive the clamping mechanism 37 with the tape clamped therein to move. When this group of clamping mechanisms 37 moves to the position of the limit block 351, it stops and the second group of clamping mechanisms 37 is started. The cutting equipment outside the box body 1 cuts off the external tape. At this time, a section of tape is clamped between the two groups of clamping mechanisms 37.

[0050] Start the two groups of support frames 36, move along the slide rail 33, and drive the tape to enter the pre-drying portion 13 after being coated by the screw. At this time, one end of the connecting rod 35 passes through the first rotating guide rail 132 and is inserted into the movable groove of the connecting plate 32, controlling the telescopic rod 362 of the support frame 36 to retract, and the fork arm 363 is pulled out from the position of the clamping mechanism 37, and the clamping mechanism 37 is released. At this time, the connecting rod 35 is completely supported by the right connecting plate 32. As the lifting mechanism 31 drives the connecting plate 32 to move downward, the end of the connecting rod 35 away from the connecting plate 32 can fall into the second rotating guide rail 133, and as it moves downward, it slides along the first rotating guide rail 132 and the second rotating guide rail 133, and finally the tape rotates from the horizontal direction to the vertical direction.

[0051] After the tape completes the direction change, it is pre-dried under the action of the dryer 131, and the pre-drying temperature is controlled at 140°C for 10 minutes. After pre-drying, the pushing mechanism 134 is started to push out the push plate 1341 and push the pre-dried tape to move along the support plate 1311. An auxiliary sliding mechanism can be set on the support plate 1311. The tape is pushed out and enters the extrusion molding part 14. The final pressing of the double-layer film is completed through the cooperation of the rotating motor 141, the rotating roller 142, the driving gear 143, the transmission gear 144, etc.

[0052] The thickness of the film after lamination is 45-50um. Through this lamination form, the film can have the following obvious advantages: 1. The thickness of a single layer of film is thin, and the surface defects of the coated surface will be much less; 2. During the lamination process, since two coated surfaces are laminated, even if there are defects on a single coated surface, the corresponding defects on the other coated surface can compensate for them, thus reducing the number of overall defects. 3. After the double-layer film is formed, there are tapes on both sides. The film and the tape fit tightly together, which can ensure that both sides are very flat after the film is torn off, without defects such as protrusions and pores.

[0053] Based on the above advantages, when forming the final aluminum-based copper-clad laminate, the overall thickness of the film is thinner and the thermal conductivity is stronger. At the same time, by adopting the form of lamination, the overall pressure resistance will be relatively better.

[0054] An aluminum-based copper-clad laminate is prepared by using a double-layer adhesive film. The aluminum substrate is laid on a workbench, the adhesive tape on the surface of the double-layer adhesive film is torn off, the double-layer adhesive film is laid on the aluminum substrate, and then a copper plate is laid on the double-layer adhesive film, and hot-pressed to form a complete aluminum-based copper-clad laminate.

Claims

1. A double-layer film processing equipment, characterized in that: It includes a box body, a base, and a cover plate. The box body is divided into a feeding part, a gluing part, a pre-drying part, and an extrusion forming part according to the process flow. A feeding part, which includes two groups of feeding ports, through which two groups of adhesive tapes enter the box body; A glue coating unit is used to coat the thermal conductive glue on the lower surface of the adhesive tape, and the glue coating unit includes a glue box and a wire rod; The pre-drying section is used to pre-dry the applied adhesive and push out the adhesive film obtained after pre-drying, and to closely contact and press the two sets of adhesive tapes with the sides coated with thermal conductive adhesive through the extrusion molding section; The cover plate is provided with a transport component and a folding component; There are two groups of transport components, which are used to transport the tapes entering the box to the gluing section and the pre-drying section in sequence; The folding component is used to fold the tape that has been transported to the pre-drying area and glued, and complete the pre-drying work in the pre-drying area.

2. The double-layer film processing equipment according to claim 1, characterized in that: The transport assembly includes a slide rail, a guide rod, a connecting rod, a support frame, and a clamping mechanism; The slide rails are arranged on the front and rear inner walls of the cover plate; The guide rods are arranged on the top inner wall of the cover plate, and there are two guide rods, which are arranged along the conveying direction of the adhesive tape; The connecting rod is arranged in the cover plate, the connecting rod is far away from the guide rod, and the connecting rod and the guide rod respectively pass through the two ends of the clamping mechanism, and the clamping mechanism is slidably connected between the connecting rod and the guide rod; A support frame is slidably connected to the slide rail, and one end of the support frame extending away from the slide rail is close to the clamping mechanism and is used to support and drive the clamping mechanism to slide.

3. The double-layer film processing equipment according to claim 2, characterized in that: The clamping mechanism can slide along the connecting rod, the length of which is slightly longer than the length of the tape, and two sets of limit blocks are provided on the connecting rod to limit the sliding range of the clamp on the connecting rod; Two groups of clamping mechanisms are slidably connected on the connecting rod.

4. The double-layer film processing equipment according to claim 3, characterized in that: The clamping mechanism includes a clamping plate, a movable clamping block, and a sliding column; There are two groups of movable clamping blocks, and the two groups of movable clamping blocks are slidably connected to the guide rod and the connecting rod respectively; A clamping plate is installed on the two sets of movable clamping blocks through a sliding column, one end of the sliding column is fixedly connected to the clamping plate, a convex block is provided at one end of the sliding column that passes through the movable clamping block, an elastic member is provided between the convex block and the movable clamping block, and in a normal state, the elastic member is in a stretched state; The support frame includes a slider, a telescopic rod, and a fork arm; The slider is slidably connected to the slide rail, a telescopic rod is arranged at one end of the slider away from the slide rail, and a fork arm is connected at one end of the telescopic rod away from the slider; The fork arm moves with the telescopic rod, and after the telescopic rod is extended, it can be inserted between the protrusion and the movable clamping block, and drive the sliding column to move downward, so that the clamping plate is tightly pressed on the movable clamping block.

5. The double-layer film processing equipment according to claim 4, characterized in that: The folding assembly includes a lifting mechanism and a connecting plate; There are two sets of lifting mechanisms, which are arranged at the upper end of the cover plate, and the output ends of the two sets of lifting mechanisms pass through the cover plate and are fixedly connected to the two ends of the connecting plate respectively; A movable groove is opened in the middle of the connecting plate, and the height of the movable groove is slightly larger than the diameter of the connecting rod. When the adhesive tape is transported to the pre-drying area as a whole, one end of the connecting rod is inserted into the movable groove of the connecting plate.

6. The double-layer film processing equipment according to claim 5, characterized in that: The pre-drying section includes a drying machine, a first rotating guide rail, and a second rotating guide rail; The dryer is set in a vertical direction, and both sides of the dryer can be dried; The first rotating guide rail and the second rotating guide rail are respectively arranged on the left and right sides of the dryer; The first rotating guide rail is close to the connecting plate, and when the connecting rod is inserted into the movable groove of the connecting plate, the connecting rod is also synchronously inserted into the guide groove of the first rotating guide rail; The movable area of ​​the second rotating guide rail is consistent with that of the first rotating guide rail, and the upper end of the second rotating guide rail is in an open state. When the connecting rod slides along the first rotating guide rail, it can also fall into the guide rail groove of the second rotating guide rail; A support plate is provided at the lower end of the dryer. When the adhesive tape rotates to a vertical direction along with the connecting rod, the support plate is inserted between the adhesive tape and the connecting rod.

7. The double-layer film processing equipment according to claim 6, characterized in that: The pre-dried portion is also provided with a pushing mechanism, and a pushing plate matching the width of the tape is installed at the pushing end of the pushing mechanism for pushing the pre-dried tape to the extrusion molding portion.

8. The double-layer film processing equipment according to claim 7, characterized in that: The extrusion molding part includes a rotating motor, two sets of rotating rollers, a driving gear, a transmission gear, and a guide plate; The lower output end of the rotating motor is connected with a driving gear, and the upper end of the rotating roller is fixed with a transmission gear, and the driving gear and the transmission gear are meshed; The guide plate is located at the output end of the pre-dried tape. The two groups of pre-dried tapes pushed out by the pushing mechanism are attached through the guide plate and transported to between the two groups of rotating rollers for lamination.

9. A film processing process using the double-layer film processing equipment according to any one of claims 1 to 8, characterized in that The following steps are involved: The two sets of tapes are transported to the feeding part through the external conveying mechanism, clamped and transported by the transport component, and passed through the gluing part to control the viscosity of the glue in the glue box to be 1500-3500mpa.s. The glue is coated by the wire rod so that both sets of tapes are coated with a layer of glue film with a thickness of about 25um. The coated tape is sent to the pre-drying section along with the transport assembly, and the two sets of tapes are turned from horizontal to vertical by the folding assembly, pre-dried by the dryer in the pre-drying section, and then pushed out to the extrusion molding section; Through the extrusion forming part, the film surfaces of the two sets of tapes are bonded to each other to form a double-layer film.

10. An aluminum-based copper-clad laminate, characterized in that: A double-layer adhesive film prepared by the method of claim 9.

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