PCB anti-offset lamination device

Abstract

The present application relates to the technical field of PCB production, and particularly relates to a PCB anti-deviation lamination equipment, which comprises a workbench, a lifting plate is installed on one side of the workbench in a lifting mode, a plurality of spacer plates for interval pressing of PCBs are arranged on the top of the lifting plate, the spacer plates are connected with each other in a self-locking mode to avoid deviation of the PCBs after lamination, a pushing assembly for unlocking, separating and feeding of the spacer plates and a correction assembly for assisting the pushing assembly to prevent deviation of the PCBs during lamination are arranged on the top of the workbench; the present application integrates the correction, pushing and self-locking modular spacer plates, the centering cooperation of the clamping plate and the elastic plate is used for secondary alignment during lamination, the misalignment accumulation and extrusion deviation failure of the plates are avoided, the elastic limiting anti-slip is used for the whole conveying process; meanwhile, the spacer plates are automatically unlocked, separated and self-locked by the lifting plate, and are adapted to lamination and pressing of PCBs with different thicknesses, the layer deviation, open circuit and other defects are effectively reduced, and the lamination precision and the pressing yield of the high-precision multilayer PCB are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of PCB manufacturing technology, and in particular to a PCB anti-displacement stacking device. Background Technology

[0002] Printed circuit boards (PCBs) are circuit carriers made of glass fiber epoxy resin copper-clad laminate as the base material. Copper conductive lines are formed by exposure etching, and multi-layer interconnection is achieved by hot pressing with prepreg. They are made by drilling, electroplating, solder masking, surface treatment and other processes. They are used to carry integrated circuits and various electronic components, transmit electrical signals by conductive lines, and separate the traces by insulating substrate. They are the basic components for electrical connection of various electronic devices.

[0003] The existing traditional PCB stacking and lamination process has the following technical problems: First, conventional production mostly involves individual stacks of PCBs being placed into molds for hot pressing and curing. Due to the constraints of the PP resin cross-linking and curing process, the entire cycle of heating, constant temperature holding, and gradient cooling of a single set of boards is time-consuming. The press can only process a small number of boards at a time, resulting in long equipment downtime and low capacity utilization. Production efficiency is significantly limited when processing large batches of multilayer integrated circuit boards. Second, the operation method of stacking all core boards and soft PP sheets before clamping and correcting the alignment is problematic because PP is flexible and easily deformed at room temperature. During the stacking process, interlayer movement and local misalignment are prone to occur. When clamping the boards together, the rigid core boards can easily squeeze the soft PP, causing wrinkles and slippage. The clamping structure cannot effectively position and constrain each layer of the board. During the conveying and furnace heating stages, the PP further slips in the molten state, ultimately leading to defects such as layer misalignment, blind and buried via misalignment, and circuit breaks after lamination, resulting in a high product scrap rate.

[0004] To address the aforementioned technical deficiencies, a solution is proposed that combines a deviation correction and anti-deviation structure with a self-locking isolation plate for layered pressing. This solution addresses the issues of misalignment, slippage, and poor compatibility in multi-layer PCB stacks from multiple aspects, including stacking alignment, conveying deviation prevention, layered isolation, and pressing locking, thereby improving stacking accuracy and the quality of the pressed product. Summary of the Invention

[0005] The purpose of this invention is to provide a PCB board anti-displacement stacking device to solve the above-mentioned technical defects.

[0006] The objective of this invention can be achieved through the following technical solution: a PCB board anti-offset stacking device, including a workbench, a lifting plate is installed on one side of the workbench, and a plurality of isolation plates for intermittent pressing of PCB boards are provided on the top of the lifting plate. The isolation plates are self-lockingly connected to each other to prevent the PCB boards from shifting after stacking. The top of the workbench is provided with a pushing component for unlocking and separating the isolation plates and feeding the PCB boards, as well as a correction component to assist the pushing component in anti-offset stacking of PCB boards. The pushing component includes a pushing frame and a lifting plate. The pushing frame is located on the top of the workbench and sends the stacked PCB boards to the top of the corresponding isolation plate. The lifting plate moves with the pushing frame and raises the upper isolation plate for feeding, while the lower isolation plate is pressed down for initial pressing. The alignment component includes two sets of clamping plates for aligning the two sides of the PCB stack, and multiple elastic plates located on the opposite side of the clamping plates to assist the PCB stack in resisting the push frame for secondary alignment and preventing misalignment.

[0007] Preferably, the lifting plate is slidably installed on one side of the worktable, and a lead screw threadedly connected to the lifting plate is rotatably connected to the worktable. A servo motor for driving the lead screw to rotate is installed at the bottom of the worktable by bolts.

[0008] Preferably, each corner of the bottom of the isolation plate is fixedly connected with a positioning pin, and the top of both the isolation plate and the lifting plate is provided with a positioning hole for insertion into the corresponding positioning pin. Sleeves are symmetrically fixedly connected to both sides of the isolation plate. The top edge and bottom edge of the free end of the lifting plate are respectively provided with a large inclined surface and a small inclined surface. Multiple flow cavities penetrating both sides are provided inside the isolation plate.

[0009] Preferably, the lifting plate is slidably mounted on the top of the side wall of the workbench, the push frame includes a U-shaped segment and support rods for fixed connection between the two sides of the U-shaped segment and the corresponding lifting plate, and an electric push rod for pushing the U-shaped segment to move is installed on the workbench.

[0010] Preferably, the top of the workbench is provided with a sliding groove that is slidably connected to the clamping plate, and the inside of the sliding groove is rotatably connected to a bidirectional screw that is threadedly connected to two sets of clamping plates. A servo motor 2 that drives the bidirectional screw to rotate is installed on the workbench by bolts. Multiple elastic plates are inclined and fixedly connected to one side of the clamping plate, and the free end of the elastic plate is inclined toward the push frame.

[0011] Preferably, the isolation plate has symmetrical movable cavities on both sides that communicate with the corresponding positioning holes, and two sets of locking plates are slidably connected in the movable cavities. The opposite side of the locking plates is provided with stepped grooves, and the stepped grooves are composed of multiple horizontal segments and vertical inclined segments located between adjacent horizontal segments. The positioning holes are provided with locking grooves for the locking plates to pass through.

[0012] Preferably, the sleeve is rotatably connected to a transmission rod, and the two ends of the transmission rod are respectively fixedly connected to a gear and a rubber wheel. Both sets of locking plates are fixedly connected to racks that mesh with the gears, and the two sets of racks are staggered vertically.

[0013] Preferably, a Z-shaped friction plate is fixedly connected to the top of one side of the lifting plate, and multiple fixing pins are fixedly connected at equal intervals along the length of one side of the lifting plate. A contact rod is rotatably connected to the fixing pin, and a limiting block that abuts against one side of the contact rod is fixedly connected to the lifting plate.

[0014] The beneficial effects of this invention are as follows: (1) This invention uses a correction component and a push component to solve the problem of misalignment and slippage of core board and soft PP sheet in traditional PCB stacking process: During the stacking of the boards layer by layer, the bidirectional screw drives the two sets of clamping plates to be centered and clamped once, and the initial alignment is completed from both sides of the board; at the same time, the inclined elastic plate is subjected to elastic deformation and continuously pushes the stacked core board and PP sheet to move against the push frame, so as to achieve secondary precise alignment, eliminate the problem of single board placement offset, interlayer misalignment and accumulation, and uniform clamping and correction after stacking, which makes it difficult for the core board to move and correct the soft PP sheet due to pressure. During the overall pushing and feeding process of PC stacking, the clamping plate and the elastic plate maintain an elastic clamping and limiting state, constraining the relative displacement of multi-layer boards throughout the process. This effectively avoids the slippage and deviation of the core board or soft PP sheet during movement and transition stations, improves the overall alignment accuracy of multi-layer PCB boards, and effectively reduces the scrap defects such as open circuits, hole ring offsets, and line misalignments caused by layer misalignment in high-precision integrated circuit multi-layer boards. It is suitable for precision stacking operations of high-precision PCBs of various specifications.

[0015] (2) The present invention adopts a self-locking modular isolation plate structure, combined with a lifting plate linkage transmission mechanism, to realize the integrated intelligent processing of automatic unlocking of the isolation plate, layer feeding, and automatic locking after pressing, which is suitable for the entire process requirements of PCB hot pressing and stacking: through the segmented linkage of the lifting plate's large and small inclined surfaces, Z-shaped friction plate, and abutment rod, the locking plate inside the isolation plate is driven to move relative or opposite, automatically completing the unlocking and lifting of the upper isolation plate and the pressing and self-locking of the lower isolation plate. At the same time, the pushing stroke can be adjusted according to the thickness of the PCB board, and the multi-level stepped groove on the locking plate can be used to adapt to the stacking operation of different thickness boards, which has extremely strong adaptability. Multiple sets of self-locking isolation plates independently separate each stack of PCB boards, preventing the problem of molten resin sticking together during the pressing process. At the same time, the rigid pressure-bearing structure of the isolation plates can evenly distribute the pressure and heat of the hot press, allowing the PP resin to melt and cure more evenly, avoiding local glue shortages, delamination, and warping deformation of the board surface. Furthermore, after pressing, the self-locking structure of the isolation plates firmly locks the entire stack, preventing the boards from loosening or misaligning during transportation and hot pressing, thus improving the molding quality and production yield of multi-layer PCBs. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings; Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram showing the disassembly of the two sets of isolation plates of the present invention; Figure 3 This is a cross-sectional view of the isolation plate of the present invention. Figure 1 ; Figure 4 This is a cross-sectional view of the isolation plate of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the locking plate of the present invention; Figure 6 This is a schematic diagram of the structure of the workbench of the present invention; Figure 7 This is a schematic diagram of the push component of the present invention; Figure 8 This is a schematic diagram of the cooperation between the lifting plate and the isolation plate below it in this invention; Figure 9 This is a schematic diagram of the structure of the correction component of the present invention.

[0017] Legend: 1. Workbench; 11. Lifting plate; 12. Lead screw; 13. Double-acting screw; 2. Isolation plate; 21. Positioning pin; 22. Positioning hole; 23. Sleeve; 24. Movable cavity; 25. Locking plate; 26. Step groove; 27. Locking groove; 28. Transmission rod; 29. ​​Gear; 210. Rubber wheel; 211. Rack; 3. Push frame; 31. Lifting plate; 32. Electric push rod; 33. Z-shaped friction plate; 34. Abutment rod; 35. Limiting block; 4. Clamping plate; 41. Elastic plate. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figures 1-4 , Figure 6 , Figure 7 and Figure 9 As shown, the problem of hot-pressing single stacks of boards one by one results in a long pressing cycle, low press utilization, and poor mass production efficiency. Furthermore, the overall alignment after stacking causes soft PP sheets to be easily squeezed, slipped, and misaligned, making precise positioning difficult and leading to layer misalignment and scrapping issues during pressing. These problems can be solved by the following solutions: This embodiment discloses a PCB board anti-offset stacking device, including a workbench 1. A lifting plate 11 is installed on one side of the workbench 1 in a lifting manner, and multiple isolation plates 2 are provided on the top of the lifting plate 11 for intermittent pressing of PCB boards. The lifting plate 11 carries multiple isolation plates 2 and rises sequentially to be flush with the top of the workbench 1. This is used to push the stacked PCB boards to the top of the corresponding isolation plates 2 in an intermittent manner, preventing the problem of multiple sets of PCB boards sticking together with molten resin during the pressing process. At the same time, the rigid pressure-bearing structure of the isolation plates 2 can evenly distribute the pressure and heat of the hot press, making the PP resin melt and solidify more evenly, avoiding local glue shortage, delamination, and warping deformation of the board surface. The isolation plates 2 are self-locking connected to each other to prevent the PCB boards from shifting after stacking. The top of the workbench 1 is provided with a pushing component for unlocking and separating the isolation plates 2 and feeding the PCB boards, as well as a correction component to assist the pushing component in preventing the PCB boards from being stacked off-center.

[0020] The pushing component includes a pushing frame 3 and a lifting plate 31. The pushing frame 3 is located on the top of the workbench 1 and pushes the PCB board stack to the top of the corresponding isolation plate 2. The lifting plate 31 moves with the pushing frame 3 and lifts the isolation plate 2 above it for feeding, while the isolation plate 2 below it is pressed down for initial pressing.

[0021] The alignment component includes two sets of clamping plates 4 for aligning the two sides of the PCB stack, and multiple elastic plates 41 located on opposite sides of the clamping plates 4 to assist the PCB stack in resisting the push frame 3 for secondary alignment and preventing misalignment.

[0022] The lifting plate 11 is slidably installed on one side of the workbench 1, and the workbench 1 is rotatably connected to the lead screw 12 which is threadedly connected to the lifting plate 11. The bottom of the workbench 1 is bolted to a servo motor that drives the lead screw 12 to rotate. The servo motor drives the lead screw 12 to rotate, and the lead screw 12 drives the lifting plate 11 to move up and down.

[0023] Each corner of the bottom of the isolation plate 2 is fixedly connected with a positioning pin 21. The top of both the isolation plate 2 and the lifting plate 11 is provided with a positioning hole 22 that is inserted into the corresponding positioning pin 21. The positioning pin 21 and the positioning hole 22 are used to avoid the problem of misalignment and stacking between adjacent isolation plates 2. Sleeves 23 are symmetrically fixedly connected to both sides of the isolation plate 2. The top edge and bottom edge of the free end of the lifting plate 31 are respectively provided with a large inclined surface and a small inclined surface.

[0024] During the translation of the lifting plate 31, the large and small inclined surfaces on the lifting plate 31 contact the upper and lower sleeves 23 respectively. As the lifting plate 31 moves, the isolation plate 2, which is higher than the top of the worktable 1, is lifted so that the PCB board can be moved to the top of the corresponding isolation plate 2 after stacking. The isolation plate 2 under the worktable 1 is slightly pressed down to enhance the anti-slip and offset effect between the layers of the PCB board after stacking. The isolation plate 2 has multiple flow cavities running through its two sides to enhance the heat conduction and heating effect of the isolation plate 2 on the PCB board inside the hot press.

[0025] The lifting plate 31 is slidably installed on the top of the side wall of the workbench 1. The push frame 3 includes a U-shaped section and support rods for fixed connection between the two sides of the U-shaped section and the corresponding lifting plate 31. The bottom height of the support rods is higher than the top height of the clamping plate 4 to avoid interference from the clamping plate 4 during the translation of the push frame 3. An electric push rod 32 is installed on the workbench 1 to push the U-shaped section to translate. The external adsorption robot sequentially grabs the core board and PP sheet and stacks them on the top of the workbench 1 between the two sets of clamping plates 4. The PCB board formed by stacking multiple core boards and PP sheets is pushed by the electric push rod 32 to push the push frame 3 to carry the PCB board and the lifting plate 31 to the top of the corresponding isolation plate 2.

[0026] The top of the workbench 1 is provided with a sliding groove that is slidably connected to the clamping plate 4, and the inside of the sliding groove is rotatably connected to a bidirectional screw 13 that is threadedly connected to two sets of clamping plates 4. A servo motor 2 that drives the bidirectional screw 13 to rotate is installed on the workbench 1 by bolts. During the stacking process, each time a core board or PP sheet is placed, the servo motor 2 drives the bidirectional screw 13 to rotate, causing the two sets of clamping plates 4 to move relative to each other once. The two sets of clamping plates 4 perform a two-sided clamping alignment process on the stacked core board and PP sheet.

[0027] Multiple elastic plates 41 are fixedly connected to one side of the clamping plate 4 at an angle, and the free ends of the elastic plates 41 are tilted towards the push frame 3. The multiple inclined elastic plates 41 on the clamping plate 4 bend in contact with the placed core board and PP sheet. During the bending process, the elastic plates 41 push the core board and PP sheet to move towards the push frame 3 and abut against it, realizing secondary alignment to prevent the stacked boards from shifting. During the movement of the PCB board, the two sets of clamping plates 4 maintain the clamping shape, that is, the elastic plates 41 elastically contact the PCB board after the stacking, avoiding the shift between layers during the push process.

[0028] Example 2: Please refer to Figures 3-5 and Figure 8 As shown, the problem of PCB misalignment during stacking and transportation, caused by the tendency of the isolation plates to move between each other during the stacking process of multiple PCBs, can be solved by the following solution: In this embodiment, the isolation plate 2 has symmetrical movable cavities 24 on both sides that communicate with the corresponding positioning holes 22. Two sets of locking plates 25 are slidably connected in the movable cavities 24. The opposite side of the locking plates 25 is provided with stepped grooves 26. The stepped grooves 26 are composed of multiple horizontal segments and vertical inclined segments located between adjacent horizontal segments. The positioning holes 22 are provided with locking grooves 27 for the locking plates 25 to pass through.

[0029] After the PCB board moves to the top of the corresponding isolation plate 2, the two sets of locking plates 25 in the movable cavity 24 of the upper isolation plate 2 move away from each other. The stepped groove 26 end on the locking plate 25 and the locking groove 27 on the positioning post 21 inserted into the positioning hole 22 complete the one-way self-locking of the isolation plates 2 below the lifting plate 31, so as to avoid the relative separation between adjacent isolation plates 2 during subsequent transportation, and the problem of misalignment between the core board and the PP sheet.

[0030] By having the horizontal sections of different heights on the stepped groove 26 contact the bottom of the locking groove 27, the stacking of PCB boards of different thicknesses is achieved. The vertical inclined sections between adjacent horizontal sections are used to assist the locking plate 25 in moving away from each other. The bottom of the locking groove 27 moves smoothly to the horizontal section of a lower height. During the movement, the vertical inclined sections gradually increase the squeezing force of the upper isolation plate 2 on the lower isolation plate 2.

[0031] The sleeve 23 is internally connected to a transmission rod 28, and gears 29 and rubber wheels 210 are fixedly connected to both ends of the transmission rod 28. Both sets of locking plates 25 are fixedly connected to racks 211 that mesh with gears 29, and the two sets of racks 211 are staggered vertically. The transmission rod 28 and gears 29 are driven to rotate forward by the rubber wheels 210. The gears 29 mesh with the racks 211, causing the two sets of locking plates 25 to move away from each other, which is used for self-locking between the two sets of isolation plates 2. The transmission rod 28 and gears 29 are driven to rotate in the opposite direction by the rubber wheels 210. The gears 29 mesh with the racks 211, causing the two sets of locking plates 25 to move relative to each other, which is used for unlocking between the two sets of isolation plates 2.

[0032] A Z-shaped friction plate 33 is fixedly connected to the top of one side of the lifting plate 31. During the process of inserting the lifting plate 31 between the two sets of sleeves 23, the Z-shaped friction plate 33 on the lifting plate 31 first contacts the rubber wheel 210 on the upper sleeve 23, causing the rubber wheel 210 to rotate in the opposite direction. The two sets of locking plates 25 move relative to each other, and the end of the stepped groove 26 on the locking plate 25 separates from the positioning pin 21, unlocking the self-locking between the two sets of isolation plates 2, so that the lifting plate 31 can push the upper isolation plate 2 to lift and separate.

[0033] Multiple fixing pins are fixedly connected at equal intervals along the length of one side of the lifting plate 31, and abutment rods 34 are rotatably connected to the fixing pins. A limiting block 35 that abuts against one side of the abutment rod 34 is fixedly connected to the lifting plate 31. The bottom ends of the multiple abutment rods 34 on the lifting plate 31 contact the rubber wheel 210 on the lower sleeve 23 in sequence. The abutment rods 34 deflect and limit the movement by contacting the limiting block 35, thereby driving the rubber wheel 210 to rotate in the forward direction, thus completing the one-way self-locking of the isolation plates 2 below the lifting plate 31.

[0034] Conversely, when the lifting plate 31 moves in the reverse direction, the limiting block 35 does not obstruct the reverse rotation of the abutment rod 34, thereby enabling the abutment rod 34 to contact the rubber wheel 210 and deflect, without causing the rubber wheel 210 to rotate, maintaining the self-locking state between the isolation plates 2 below the lifting plate 31, and the center of gravity of the abutment rod 34 is located below the fixing pin, maintaining its vertical state under its own weight, so that when the lifting plate 31 moves towards the isolation plate 2, the abutment rod 34 effectively contacts and pushes the rubber wheel 210 to rotate.

[0035] For PCBs with more layers, the distance the conveyor frame moves toward the isolation plate 2 is less than the distance the PCB with fewer layers moves. This is used to control the contact between the transverse sections of different heights on the stepped groove 26 and the bottom of the locking groove 27, so as to realize the stacking process of PCBs with different thicknesses.

[0036] Example 3: Please refer to Figures 1-9 As shown, the present invention also proposes a method for using a PCB board anti-offset stacking device, comprising the following steps: Step 1: Multiple isolation plates 2 are stacked on top of the lifting plate 11. Servo motor 1 drives screw 12 to rotate. Screw 12 drives the lifting plate 11 to carry multiple isolation plates 2 up until the top of the bottom isolation plate 2 is flush with the top of the workbench 1. The external adsorption robot picks up the core board and PP sheet in sequence and stacks them on the top of the workbench 1 between the two sets of clamping plates 4. During stacking, each time a core board or PP sheet is placed, servo motor 2 drives bidirectional screw 13 to rotate, causing the two sets of clamping plates 4 to move relative to each other once. The two sets of clamping plates 4 perform a two-sided clamping alignment process on the stacked core board and PP sheet. At the same time, multiple inclined elastic plates 41 on the clamping plate 4 contact the placed core board and PP sheet and bend. During the bending process, the elastic plates 41 push the core board and PP sheet to move towards the push frame 3 and abut against it, realizing a secondary alignment to prevent the stacked plates from being misaligned. Step 2: The PCB board formed by stacking multi-layer core boards and PP sheets is pushed by electric push rod 32 to push frame 3, carrying the PCB board and lifting plate 31 to move horizontally. During the horizontal movement, the two sets of clamping plates 4 maintain the clamping shape, that is, the elastic plate 41 elastically contacts the stacked PCB board to avoid the displacement between layers during the push process. The large inclined surface and small inclined surface on the lifting plate 31 contact the upper and lower sleeves 23 respectively. As the lifting plate 31 moves, the isolation plate 2 above the top of the worktable 1 is lifted. Then the PCB board is pushed to the top of the isolation plate 2, which is level with the top of the worktable 1. Then the electric push rod 32 drives the push frame 3 to move horizontally and reset to start the multi-layer stacking of the next PCB board. Then, the servo motor drives the lead screw 12 to rotate. The lead screw 12 drives the lifting plate 11 to drop by the height of one isolation plate 2 to transport the next PCB board. Step 3: During the process of inserting the lifting plate 31 between the two sets of sleeves 23, the Z-shaped friction plate 33 on the lifting plate 31 first contacts the rubber wheel 210 on the upper sleeve 23, which drives the rubber wheel 210 to drive the transmission rod 28 and gear 29 to rotate in the opposite direction. The gear 29 meshes with the rack 211, which drives the two sets of locking plates 25 to move relative to each other. The stepped groove 26 end on the locking plate 25 separates from the positioning pin 21, unlocking the self-locking between the two sets of isolation plates 2, so that the lifting plate 31 can push the upper isolation plate 2 to lift and separate. The bottom ends of the multiple abutment rods 34 on the lifting plate 31 contact the rubber wheel 210 on the lower sleeve 23 in sequence. The abutment rod 34 deflects and is limited by the contact with the limiting block 35 on one side, which drives the rubber wheel 210 to drive the transmission rod 28 and gear 29 to rotate in the forward direction. The gear 29 meshes with the rack 211, which drives the two sets of locking plates 25 to move away from each other. The stepped groove 26 on the locking plate 25 and the locking groove 27 on the positioning pin 21 inserted into the positioning hole 22 complete the one-way self-locking of the isolation plates 2 below the lifting plate 31, so as to avoid the relative separation between adjacent isolation plates 2 during subsequent transportation, and the problem of misalignment between the core plate and PP sheet. Step 4: For PCBs with a large number of layers, the distance between the conveyor frame moving towards the isolation plate 2 is smaller than that between PCBs with a small number of layers. This is used to control the contact between the transverse sections of different heights on the stepped groove 26 and the bottom of the locking groove 27, so as to achieve the stacking process of PCBs of different thicknesses. Then, multiple self-locking isolation plates 2 are sent into a hot press, where the PP resin is melted at high temperature and pressure is applied to ensure that each layer is tightly bonded. Subsequently, the resin is cooled and cured to form a whole multilayer composite PCB board.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A PCB board anti-displacement stacking device, characterized in that, The system includes a workbench (1), on one side of which a lifting plate (11) is installed in a lifting manner, and the top of the lifting plate (11) is provided with multiple isolation plates (2) for intermittent pressing of PCB boards. The isolation plates (2) are self-locking connected to each other to prevent the PCB boards from shifting after stacking. The top of the workbench (1) is provided with a pushing component for unlocking and separating the isolation plates (2) and feeding the PCB boards, as well as a correction component to prevent the PCB boards from being stacked off-center. The push assembly includes a push frame (3) and a lifting plate (31). The push frame (3) is located on the top of the workbench (1) and pushes the PCB board stack to the top of the corresponding isolation plate (2). The lifting plate (31) moves with the push frame (3) and lifts the upper isolation plate (2) to feed the material, while the lower isolation plate (2) is pressed down to initially press together. The alignment component includes two sets of clamping plates (4) for aligning the two sides of the PCB stack, and multiple elastic plates (41) located on the opposite side of the clamping plates (4) to assist the PCB stack in resisting the push frame (3) for secondary alignment and anti-deviation.

2. The PCB board anti-displacement stacking device according to claim 1, characterized in that, The lifting plate (11) is slidably installed on one side of the workbench (1), and a lead screw (12) that is threadedly connected to the lifting plate (11) is rotatably connected to the workbench (1). A servo motor that drives the lead screw (12) to rotate is installed at the bottom of the workbench (1) by bolts.

3. The PCB board anti-displacement stacking device according to claim 1, characterized in that, The bottom corners of the isolation plate (2) are fixedly connected with positioning pins (21). The top of the isolation plate (2) and the lifting plate (11) are provided with positioning holes (22) that are inserted into the corresponding positioning pins (21). The two sides of the isolation plate (2) are symmetrically fixedly connected with sleeves (23). The top edge and bottom edge of the free end of the lifting plate (31) are respectively provided with a large inclined surface and a small inclined surface. The interior of the isolation plate (2) is provided with multiple flow cavities that penetrate both sides.

4. The PCB board anti-displacement stacking device according to claim 1, characterized in that, The lifting plate (31) is slidably installed on the top of the side wall of the workbench (1). The push frame (3) includes a U-shaped section and support rods for fixed connection between the two sides of the U-shaped section and the corresponding lifting plate (31). An electric push rod (32) for pushing the U-shaped section to move is installed on the workbench (1).

5. A PCB board anti-displacement stacking device according to claim 1, characterized in that, The top of the workbench (1) is provided with a sliding groove that is slidably connected to the clamping plate (4), and the inside of the sliding groove is rotatably connected to a bidirectional screw (13) that is threadedly connected to two sets of clamping plates (4). A servo motor 2 that drives the bidirectional screw (13) to rotate is installed on the workbench (1) by bolts. Multiple elastic plates (41) are inclined and fixedly connected to one side of the clamping plate (4), and the free end of the elastic plate (41) is inclined toward the push frame (3).

6. A PCB board anti-displacement stacking device according to claim 3, characterized in that, The isolation plate (2) has symmetrical movable cavities (24) on both sides that communicate with the corresponding positioning holes (22). Two sets of locking plates (25) are slidably connected in the movable cavity (24). The opposite side of the locking plate (25) is provided with stepped grooves (26). The stepped grooves (26) are composed of multiple horizontal segments and vertical inclined segments located between adjacent horizontal segments. The positioning hole (22) has a locking groove (27) through which the locking plate (25) passes.

7. A PCB board anti-displacement stacking device according to claim 6, characterized in that, The sleeve (23) is rotatably connected to a transmission rod (28), and the two ends of the transmission rod (28) are respectively fixedly connected to a gear (29) and a rubber wheel (210). Both sets of locking plates (25) are fixedly connected to racks (211) that mesh with the gears (29), and the two sets of racks (211) are staggered vertically.

8. A PCB board anti-displacement stacking device according to claim 7, characterized in that, A Z-shaped friction plate (33) is fixedly connected to the top of one side of the lifting plate (31). A plurality of fixing pins are fixedly connected at equal intervals along the length of one side of the lifting plate (31), and a contact rod (34) is rotatably connected to the fixing pin. A limiting block (35) that abuts against one side of the contact rod (34) is fixedly connected to the lifting plate (31).

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