Pressurizing device for circuit board packaging

Abstract

The invention relates to the technical field of circuit board manufacturing equipment, and discloses a pressurizing device for circuit board packaging, which comprises a shell, a pressurizing device is fixedly arranged at the bottom of the inner wall of the shell, the pressurizing device is generally in a hydraulic mode or an air pressure mode, a pressurizing group is arranged on the side surface of the shell, and the pressurizing group comprises a plurality of pressing plates and a bearing plate; the two sides of each pressing plate are each provided with a bearing plate, and the multiple bearing plates are arranged on the two sides of the inner wall of the shell in a sliding mode in pairs. The bearing plate and the pressing plate are separately arranged and are connected with the screw rod and the ejector block, so that the pressing plate can extend out of the shell along the bearing plate under the driving of the driving motor, and after the pressing plate extends out, the multi-layer circuit board is separated from high-temperature air, so that the purpose of rapid heat dissipation can be achieved; and the pressing plate is arranged to be extendable, so that a worker can conveniently find the abnormal condition of the pressing plate in time, and convenience is provided for later cleaning and maintenance of the pressing plate.

Description

Technical Field

[0001] This invention relates to the field of circuit board manufacturing equipment technology, and in particular to a pressure device for circuit board packaging. Background Technology

[0002] In the field of electronics manufacturing, multilayer printed circuit boards (PCBs) play a crucial role. A multilayer PCB is a printed circuit board with multiple conductive layers, consisting of two or more layers of conductive lines and insulating materials stacked alternately. During production, the manufacturing of multilayer PCBs typically requires a lamination process. This usually involves stacking copper foil, prepreg, and a pre-fabricated core board in a specific order, then hot-pressing them under high temperature and pressure to fuse them together, followed by cold pressing to release stress and ensure a flat final product.

[0003] The device used for pressurizing circuit board packaging is generally a laminator. When multilayer circuit boards are laminated, they are usually placed in a fixture for easy transfer. However, the fixture itself has to go through multiple steps such as lamination, pre-pressing, and transfer before entering the laminator. This results in the fixture itself carrying some dust and impurities. During the actual pressurization, the pressure between the fixture and the platen is relatively large, and the dust and impurities brought by the fixture will be compressed on the surface of the platen. This makes it impossible for the laminator's brush cleaning device to effectively clean the surface of the platen. Over time, the accumulation of these dust and impurities will form protrusions on the surface of the platen, causing an imbalance on the surface of the platen, which in turn leads to a decrease in the quality of the multilayer circuit board. Summary of the Invention

[0004] In view of the problem that after lamination, residue remains on the surface of the laminating plate after lamination and cannot be effectively cleaned, a pressure device for circuit board packaging is proposed.

[0005] Its purpose is to clean the pressure plates by scraping away dust and impurities from the surface of each pressure plate with a scraper, thereby preventing unevenness on the surface of the pressure plates.

[0006] The technical solution of the present invention is a pressure device for circuit board packaging, including a housing, a pressure device fixedly disposed on the bottom of the inner wall of the housing, a pressure assembly disposed on the side of the housing, the pressure assembly including a plurality of pressure plates and a support plate, a support plate disposed on both sides of each pressure plate, the plurality of support plates being slidably disposed in pairs on both sides of the inner wall of the housing, and further including an extension mechanism and a cleaning mechanism disposed on the inner side of the support plate; The extension mechanism includes a drive motor fixedly mounted on the side of each bearing plate, a lead screw fixedly mounted on the output end of the drive motor via a coupling, a top block sleeved on the side of the lead screw and fixedly mounted at the bottom of the side edge of each pressure plate, a support seat sleeved on the side of the lead screw and fixedly mounted on the top of each bearing plate, and an auxiliary component mounted on the side of each pressure plate for maintaining the balance of the pressure plate. The cleaning mechanism includes a connecting lever rotatably mounted on the top of each support plate, a scraper rotatably mounted on the side of each connecting lever, a return spring fixedly mounted between the side of the connecting lever and the support plate, a soft rope fixedly mounted on the side of the connecting lever, and a winding member and a clamping member mounted on the top of the support plate. The winding member is used to pull the scraper closer to the pressure plate, and the clamping member is used to fix the position of the soft rope to prevent the scraper from approaching the pressure plate prematurely.

[0007] Furthermore, the inner wall of the top block is threaded to the side of the lead screw, and the end of the top block away from the pressure plate abuts against the side of the bearing plate. Two support seats are provided, located at different ends of the lead screw, and the end of each support seat away from the bearing plate abuts against the side of the pressure plate.

[0008] Furthermore, the auxiliary components include a protruding rod fixedly disposed on the side of each pressure plate, a steel wire rope fixedly disposed on the side of the protruding rod, a winding shaft rotatably disposed on the bottom of each bearing plate via a bracket, and a spring coil fixedly disposed on the side of each winding shaft.

[0009] Furthermore, each of the wire ropes is wound on the side of a winding shaft connected to the adjacent bearing plate directly above it, and one end of the spring coil away from the winding shaft is fixedly disposed on the side of the winding shaft bracket.

[0010] Furthermore, the winding component includes a fixing frame fixedly disposed at the bottom edge of each pressure plate, an extrusion folding rod fixedly disposed on the side of each pressure plate, a rotating seat slidably disposed on the top of the bearing plate, a protruding plate fixedly disposed on the top of the rotating seat, a rotating shaft rotatably disposed on the inner wall of the rotating seat, a rubber wheel sleeved on the end of the rotating shaft, a rubber sleeve sleeved and fixedly disposed on the side of the rotating shaft, a winding cylinder sleeved on the side of the rubber sleeve, a spring coil two fixedly disposed on the end of the rotating shaft away from the rubber wheel, and a one-way unit disposed on the rotating shaft near the end face of the spring coil two.

[0011] Furthermore, the unidirectional unit includes several elastic plates fixedly disposed on the rotating shaft near the end face of the spring coil, several stop bars fixedly disposed on the side of the bearing plate opposite to the rotating shaft, several elastic plates uniformly arranged in a circular array on the end face of the rotating shaft, several stop bars uniformly arranged in a circular array on the side of the bearing plate, and each elastic plate being inclinedly disposed on the end face of the rotating shaft.

[0012] Furthermore, the fixing frame is located at the end of the pressure plate near the drive motor, the side of the extrusion folding rod abuts against the side of the convex plate, the rotating seat is located at the end of the bearing plate away from the drive motor, a rubber sheet is fixedly installed at the bottom of the fixing frame, and a spring is fixedly installed between the rotating seat and the side of the bearing plate.

[0013] Furthermore, the clamping component includes a stop plate rotatably disposed on the side of the fixed frame, a guide wheel fixedly disposed on the top of the bearing plate, a wedge block slidably disposed on one side of the guide wheel, a blocking rod rotatably disposed on the side of the wedge block, a transmission rod slidably disposed on the top of the bearing plate via a bracket, a Z-shaped frame rotatably disposed on the top of the bearing plate, and a movable plate rotatably disposed on the end of the Z-shaped frame away from the transmission rod.

[0014] Furthermore, a spring is fixedly installed between the side of the abutment away from the drive motor and the fixed frame; a spring is fixedly installed between the movable plate and the side of the Z-shaped frame; a rubber sheet is fixedly installed on the side of the wedge block near the guide wheel; a spring is fixedly installed between the side of the transmission rod and the top support of the bearing plate; the end of the transmission rod away from the Z-shaped frame abuts against the side of the wedge block; the side of the Z-shaped frame away from the movable plate abuts against the end of the transmission rod; the end of the soft rope away from the connecting folding rod passes through the bottom of the guide wheel and is wound around the side of the winding drum; and a spring is fixedly installed between the side of the obstruction rod and the wedge block.

[0015] Furthermore, the return spring pushes the connecting lever away from the support plate, and each of the scrapers abuts against the bottom of the adjacent directly above pressure plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By separating the support plate and the pressure plate and connecting them with the lead screw and the top block, the pressure plate can extend out of the outer shell along the support plate under the drive of the drive motor. After the pressure plate extends, the multi-layer circuit board is separated from the high temperature air, which can achieve the purpose of rapid heat dissipation. The extendable design of the pressure plate not only makes it convenient for staff to detect abnormalities of the pressure plate in time, but also provides convenience for the later cleaning and maintenance of the pressure plate.

[0017] 2. By setting up winding and clamping components, the scraper can tightly abut against the surface of the pressure plate during the outward movement of the pressure plate, and clean the surface of the scraper when the pressure plate is reset. Before the multi-layer circuit board is removed, the scraper can be locked by the clamping components and not approach the surface of the pressure plate, thereby avoiding damage to the multi-layer circuit board by the scraper. After the pressure plate is fully extended from the outer shell to the maximum distance, the scraper can be released in time, so that the scraper can abut against the edge of the pressure plate, so as to facilitate the subsequent comprehensive cleaning of the pressure plate. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the outer casing of the present invention; Figure 2 This is a schematic diagram of the internal structure of the outer shell of the present invention; Figure 3 This is a schematic diagram of the pressurization assembly of the present invention; Figure 4 This is a schematic diagram of the side structure of the pressure plate of the present invention; Figure 5 This is a schematic diagram of the top structure of the support plate of the present invention; Figure 6 For the present invention Figure 5 A magnified structural diagram of A in the middle; Figure 7 For the present invention Figure 5 A magnified structural diagram of B in the diagram; Figure 8 This is a schematic diagram of the structure of the clamping component of the present invention; Figure 9 This is a schematic diagram of the wedge block and the blocking rod of the present invention; Figure 10 This is a schematic diagram of the structure of the winding component of the present invention; Figure 11 This is a schematic diagram of the structure of the rotating shaft of the present invention; Figure 12 This is a schematic diagram of the structure of the unidirectional unit of the present invention.

[0019] In the diagram: 1. Outer shell; 2. Pressurizing assembly; 21. Pressure plate; 22. Bearing plate; 3. Extension mechanism; 31. Drive motor; 32. Lead screw; 33. Top block; 34. Support base; 35. Auxiliary component; 351. Protruding rod; 352. Steel wire rope; 353. Winding shaft; 354. Spring coil; 4. Cleaning mechanism; 41. Connecting folding rod; 42. Scraper; 43. Return spring; 44. Soft rope; 45. Winding component; 451. Fixing frame; 45 2. Extrusion folding rod; 453. Rotating seat; 454. Protruding plate; 455. Rotating shaft; 4551. Rubber sleeve; 4552. Winding drum; 456. Rubber wheel; 457. Spring coil II; 458. One-way unit; 4581. Elastic plate; 4582. Stop bar; 46. Pressing component; 461. Support plate; 462. Guide wheel; 463. Wedge block; 464. Obstruction rod; 465. Transmission rod; 466. Z-shaped frame; 467. Movable plate. Detailed Implementation

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Example 1, referring to Figures 1-3This is the first embodiment of the present invention, which provides a pressure device for circuit board packaging, including a housing 1. A pressure device is fixedly installed on the bottom of the inner wall of the housing 1. The pressure device is generally hydraulic or pneumatic. A pressure group 2 is provided on the side of the housing 1. The pressure group 2 includes several pressure plates 21 and support plates 22. Each pressure plate 21 has a support plate 22 on both sides. The several support plates 22 are slidably installed in pairs on both sides of the inner wall of the housing 1. The pressure device applies pressure upward, and the several support plates 22 drive the pressure plates 21 to move upward, eventually squeezing each other. The device also includes an extension mechanism 3 and a cleaning mechanism 4 installed on the inner side of the support plates 22.

[0022] The heating method of the pressure plate 21 is to introduce heat transfer oil inside the pressure plate 21, and the rear side of the pressure plate 21 is connected to the heat transfer oil with an input pipe and an output pipe. The input pipe and the output pipe are themselves flexible hoses, which do not affect the movement of the pressure plate 21.

[0023] Example 2, refer to Figures 4-7 This is the second embodiment of the present invention, which differs from the first embodiment in that: the extension mechanism 3 includes a drive motor 31 fixedly disposed on the side of each bearing plate 22, a lead screw 32 fixedly disposed on the output end of the drive motor 31 via a coupling, and a top block 33 sleeved on the side of the lead screw 32 and fixedly disposed at the bottom of the side edge of each pressure plate 21. After the drive motor 31 is started, it drives the lead screw 32 to rotate, and the lead screw 32 drives the pressure plate 21 to move via the top block 33. The drive motor 31 is connected to the control system of the laminator. A support seat 34 sleeved on the side of the lead screw 32 and fixedly disposed on the top of each bearing plate 22 is provided. An auxiliary component 35 is located on the side of each pressure plate 21 and is used to maintain the balance of the pressure plate 21. The inner wall of the top block 33 is threaded to the side of the lead screw 32. The end of the top block 33 away from the pressure plate 21 abuts against the side of the support plate 22. Two support seats 34 are provided, located at different ends of the lead screw 32. The end of each support seat 34 away from the support plate 22 abuts against the side of the pressure plate 21. During the lamination process, the top block 33 and the support seat 34 bear the pressure between the pressure plate 21 and the support plate 22, ensuring that the lead screw 32 does not deform. After lamination is completed, the operator can extend the pressure plate 21 out of the outer shell 1 by controlling the drive motor 31.

[0024] Reference Figures 5-7The auxiliary component 35 includes a protruding rod 351 fixedly disposed on the side of each pressure plate 21, a steel wire rope 352 fixedly disposed on the side of the protruding rod 351, a winding shaft 353 rotatably disposed on the bottom of each bearing plate 22 via a bracket, and a spring coil 354 fixedly disposed on the side of each winding shaft 353. Each steel wire rope 352 is wound around the side of the winding shaft 353 connected to the adjacent bearing plate 22 directly above it. The end of the spring coil 354 away from the winding shaft 353 is fixedly disposed on the side of the bracket of the winding shaft 353. After the pressure plate 21 extends out of the outer shell 1, the end of the pressure plate 21 extending out of the outer shell 1 is unsupported, which can easily cause the entire pressure plate 21 to tip over. However, after the pressure plate 21 extends out of the outer shell 1, the wire rope 352 can use the connection force with the bearing plate 22 to support the extended end of the pressure plate 21, thereby avoiding uneven force on the pressure plate 21. After the pressure plate 21 is reset, the wire rope 352 can be rewound to the side of the winding shaft 353 by the elastic force generated by the spring coil 354.

[0025] Specifically, by separating the support plate 22 and the pressure plate 21 and connecting them with the lead screw 32 and the top block 33, the pressure plate 21 can extend out of the outer shell 1 along the support plate 22 under the drive of the drive motor 31. In actual use, the pressure plate 21 only needs to be extended after lamination is completed, and the operator can remove the multilayer circuit board and then reposition it. The advantage of this design is that after the pressure plate 21 is extended, the multilayer circuit board is removed from the high-temperature air, achieving rapid heat dissipation. Furthermore, the extendable design of the pressure plate 21 not only facilitates the operator's timely detection of any abnormalities in the pressure plate 21 but also provides convenience for subsequent cleaning and maintenance. The remaining structure is the same as that of Embodiment 1.

[0026] Example 3, referring to Figures 4-11 This is the third embodiment of the present invention, which differs from the second embodiment in that: the cleaning mechanism 4 includes a connecting lever 41 rotatably disposed on the top of each support plate 22, a scraper 42 rotatably disposed on the side of each connecting lever 41, a return spring 43 fixedly disposed between the side of the connecting lever 41 and the support plate 22, a soft rope 44 fixedly disposed on the side of the connecting lever 41, a winding member 45 and a pressing member 46 disposed on the top of the support plate 22, the winding member 45 being used to pull the scraper 42 against the support plate 22. The pressure plate 21 and the clamping member 46 are used to fix the position of the soft rope 44 and prevent the scraper 42 from approaching the pressure plate 21 in advance. The return spring 43 pushes the connecting folding rod 41 away from the bearing plate 22. Each scraper 42 abuts against the bottom of the adjacent upper pressure plate 21. When pressing, the upper pressure plate 21 will squeeze the lower scraper 42. After being squeezed, the lower scraper 42 starts to rotate and eventually rotates to the side wall of the lower pressure plate 21, thereby avoiding the scraper 42 from affecting the clamping between the adjacent pressure plates 21.

[0027] Reference Figures 6-9The clamping component 46 includes a stop plate 461 rotatably disposed on the side of the fixed frame 451. The stop plate 461 is connected to the fixed frame 451 via a bracket, and the stop plate 461 can only rotate toward the side away from the drive motor 31. A guide wheel 462 is fixedly disposed on the top of the support plate 22. A wedge block 463 is slidably disposed on one side of the guide wheel 462. The side of the wedge block 463 near the guide wheel 462 is configured as an arc surface that fits with the side of the guide wheel 462. A blocking rod 464 is rotatably disposed on the side of the wedge block 463. A transmission rod 465 is slidably disposed on the top of the support plate 22 via a bracket. A Z-shaped frame 466 is rotatably disposed on the top of the support plate 22. A movable plate 467 is rotatably disposed on the end of the Z-shaped frame 466 away from the transmission rod 465. The movable plate 467 can only rotate toward the side near the stop plate 461.

[0028] A spring is fixedly installed between the side of the abutment plate 461 away from the drive motor 31 and the fixed frame 451. The direction of the spring force is opposite to the rotation direction of the abutment plate 461. A spring is fixedly installed between the movable plate 467 and the side of the Z-shaped frame 466. The direction of the spring force is opposite to the rotation direction of the abutment plate 461. A rubber sheet is fixedly installed on the side of the wedge block 463 near the guide wheel 462. A spring is fixedly installed between the side of the transmission rod 465 and the top support of the bearing plate 22. The transmission rod 465 is located away from the Z-shaped frame 466. One end of the frame 466 abuts against the side of the wedge block 463. The side of the Z-frame 466 away from the movable plate 467 abuts against the end of the transmission rod 465. The end of the soft rope 44 away from the connecting folding rod 41 passes through the bottom of the guide wheel 462 and is wound around the side of the winding drum 4552. A spring is fixedly installed between the side of the blocking rod 464 and the wedge block 463. The blocking rod 464 can only rotate towards the side closer to the drive motor 31. The direction of the spring force is opposite to the direction of rotation of the abutment plate 461.

[0029] Specifically, after pressing is completed, the laminator door is opened, and then the drive motor 31 is started. The pressure plate 21 is extended outside the outer casing 1 via the lead screw 32. During this extension, the abutment plate 461 approaches and abuts against the side of the obstruction rod 464. As the pressure plate 21 moves forward, the abutment plate 461 moves the wedge block 463 via the obstruction rod 464. After moving, the wedge block 463 approaches the guide wheel 462 and engages the soft rope 44 with the rubber sheet on the side of the guide wheel 462 and the wedge block 463. As the pressure plate 21 continues to move, the reaction force on the side of the abutment plate 461 increases, eventually causing the abutment plate 461 to overcome the spring force and rotate, thus passing over the obstruction rod 464. As the pressure plate 21 continues to move outward, the abutment plate 461 comes into contact with the movable plate 467. The movable plate 467 drives the Z-shaped plate to rotate. After the Z-shaped plate rotates, it presses against the transmission rod 465. The end of the transmission rod 465 away from the Z-shaped frame 466 pushes against the wedge block 463, causing the wedge block 463 to move away from the guide wheel 462, thereby releasing the soft rope 44. When the pressure plate 21 returns to its original position, the abutment plate 461 presses against the movable plate 467 and the obstructing rod 464 in reverse order, causing the movable plate 467 and the obstructing rod 464 to rotate against the spring force, allowing the abutment plate 461 to pass smoothly. The movable plate 467 and the obstructing rod 464 will also return to their original position under the action of the spring. The main function of the clamping member 46 is to lock the soft rope 44 between the wedge block 463 and the guide wheel 462, preventing the winding member 45 from pulling the connecting folding rod 41 through the soft rope 44.

[0030] Reference Figures 8-11 The winding component 45 includes a fixing frame 451 fixedly disposed at the bottom edge of each pressure plate 21, a pressing folding rod 452 fixedly disposed on the side of each pressure plate 21, a rotating seat 453 slidably disposed on the top of the bearing plate 22, a protruding plate 454 fixedly disposed on the top of the rotating seat 453, a rotating shaft 455 rotatably disposed on the inner wall of the rotating seat 453, a rubber wheel 456 sleeved on the end of the rotating shaft 455, a rubber sleeve 4551 sleeved and fixedly disposed on the side of the rotating shaft 455, a winding cylinder 4552 sleeved on the side of the rubber sleeve 4551, a spring coil 457 fixedly disposed on the end of the rotating shaft 455 away from the rubber wheel 456, and a one-way unit 458 disposed on the rotating shaft 455 near the end face of the spring coil 457.

[0031] The unidirectional unit 458 includes several elastic plates 4581 fixedly disposed on the end face of the rotating shaft 455 near the end face of the spring coil 457, and several stop bars 4582 fixedly disposed on the side of the bearing plate 22 opposite to the rotating shaft 455. The elastic plates 4581 are evenly arranged in a circular array on the end face of the rotating shaft 455, and the stop bars 4582 are evenly arranged in a circular array on the side face of the bearing plate 22. Each elastic plate 4581 is inclinedly disposed on the end face of the rotating shaft 455. The fixing frame 451 is located at the end of the pressure plate 21 near the drive motor 31. The side face of the pressing and bending bar 452 abuts against the side face of the protruding plate 454. The rotating seat 453 is located at the end of the bearing plate 22 away from the drive motor 31. A rubber sheet is fixedly disposed at the bottom of the fixing frame 451. A spring is fixedly disposed between the rotating seat 453 and the side face of the bearing plate 22.

[0032] Specifically, during the extension of the pressure plate 21, the compression lever 452 begins to compress the rotating seat 453 through the protrusion plate 454. After the rotating seat 453 is compressed, it drives the rotating shaft 455 to move, causing the elastic plate 4581 to abut against the side of the stop bar 4582. The one-way unit 458 is mainly used to realize the one-way rotation of the rotating shaft 455 between the back and forth of the pressure plate 21. The specific principle is that the elastic plate 4581 is inclined and elastic. Therefore, when the rotating shaft 455 rotates in the preset direction, the elastic plate 4581 will slide on the side of the stop bar without obstruction. However, once the rotating shaft 455 reverses, the elastic plate 4581 will be stuck between the stop bar 4582 and the side of the bearing plate 22, causing the rotating shaft 455 to be unable to rotate.

[0033] Using the principle of the one-way unit 458, when the fixed frame 451 moves with the pressure plate 21 and contacts the rubber wheel 456, the rubber sheet at its bottom will drive the rotating shaft 455 to rotate. This is the positive direction set by the one-way unit 458, so the rotating shaft 455 can rotate normally. However, at this time, the abutment plate 461 has not yet contacted the movable plate 467, and the soft rope 44 is locked by the wedge block 463 and the guide wheel 462. Therefore, when the rotating shaft 455 rotates, the rubber sleeve 4551 and the winding drum 4552 will slide relative to each other. At this time, the spring coil 457 is in the energy storage rotation, but the winding drum 4552 cannot rotate under the pull of the soft rope 44. However, when the abutment plate 461 rotates the Z-shaped frame 466, the wedge block 4551... 63 is pushed by the transmission rod 465. At this time, the soft rope 44 is no longer under the locking force, and the rubber wheel 456 and the convex plate 454 also disengage from the fixed frame 451 and the extrusion folding rod 452 respectively as the pressure plate 21 moves. The rotating frame is reset under the action of the spring, the elastic plate 4581 moves away from the stop rod 4582, the elastic potential energy inside the spring coil 457 is released, the rotating shaft 455 rotates, and the rotating shaft 455 drives the winding drum 4552 to rotate through the rubber sleeve 4551 during the rotation, so that the soft rope 44 is wound on the surface of the winding drum 4552. After the soft rope 44 is wound, the connecting folding rod 41 is driven to rotate, and the scraper 42 is driven by the connecting folding rod 41 to finally abut against the surface of the pressure plate 21.

[0034] During the resetting process of the pressure plate 21, the squeezing folding rod 452 contacts the protruding plate 454 again, and the rotating seat 453 slides again, causing the elastic plate 4581 to abut against the stop rod 4582. The one-way unit 458 is activated again, so the rubber sheet at the bottom of the fixing frame 451 cannot drive the rotating shaft 455 to rotate through the rubber wheel 456. This keeps the scraper 42 in contact with the pressure plate 21. Under the action of the spring coil, there is a certain pressure between the scraper 42 and the pressure plate 21, so that the scraper 42 can have sufficient cleaning force to clean the pressure plate 21. When the pressure plate 21 is completely reset, the squeezing folding rod 452 no longer squeezes the protruding plate 454, the rotating seat 453 is reset, the elastic plate 4581 and the stop rod 4582 are separated, and the rotating shaft 455 rotates freely. The connecting folding plate is reset under the action of the reset spring 43, and the soft rope 44 is also released from the side of the winding drum 4552. Before this, the scraper 42 also performs a complete cleaning of the surface of the pressure plate 21.

[0035] Before the fixing frame 451 is separated from the rubber wheel 456, the staff may remove the multi-layer circuit board or inspect and repair the pressure plate 21. After the above work is completed, the pressure plate 21 can be extended to the last distance, so that the pressure plate 21 can be quickly retracted, ensuring that the squeezing folding rod 452 can squeeze the protruding plate 454 in time, so that the one-way unit 458 can take effect in time, locking the soft rope 44 to the outside of the winding drum 4552. The friction between the rubber sleeve 4551 and the winding drum 4552 is also sufficient to resist the elastic force from the return spring 43.

[0036] The reason for ensuring that the scraper 42 is released only after the pressure plate 21 has fully extended is that after the pressure plate 21 has extended, there are still multiple layers of circuit boards on its surface. If the scraper 42 is released directly, it will damage the surface of the multiple layers of circuit boards. The rest of the structure is the same as that in Embodiment 2.

[0037] Based on embodiments 1-3, the working principle of this invention is as follows: During the lamination stage, the pressurizing device drives the support plate 22 and the pressure plate 21 to move upwards, allowing the multilayer circuit board to complete encapsulation under thermal pressure. After lamination, the drive motor 31 extends the pressure plate 21 out of the housing via the lead screw 32. This process accelerates heat dissipation from the circuit board and facilitates component removal and equipment maintenance. When the pressure plate 21 extends, it is stabilized by the balance system of the steel wire rope 352 and the spring drum, preventing tipping. The cleaning mechanism 4 is activated synchronously during the movement of the pressure plate 21: In the initial extension stage, the wedge block 463 of the clamping member 46 locks the soft rope 44 connecting the scraper 42, while the squeezing lever 452 pushes the rotating seat 453 to store energy in the spring coil 457 inside the winding drum 4552. When the pressure plate 21 is fully extended and the workpiece is removed, the abutment plate 461 triggers the transmission rod 465 to release the lock of the soft rope 44, and the spring coil 457 immediately releases energy, tightening the soft rope 44 through the winding drum 4552, driving the connecting lever 41 to make the scraper 42 stick tightly to the surface of the pressure plate 21. During the reset stroke of the pressure plate 21, the one-way unit 458 mechanism ensures that the scraper 42 remains in a cleaning state, thoroughly scraping away the residue on the surface of the pressure plate 21. After the pressure plate 21 is fully reset, all mechanisms automatically release the lock, and the scraper 42 disengages from the pressure plate 21 and resets under the action of the reset spring 43, and the entire system returns to standby mode.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A pressure-applying device for circuit board packaging, comprising a housing (1), wherein a pressure-applying device is fixedly disposed on the bottom of the inner wall of the housing (1), and a pressure-applying assembly (2) is disposed on the side of the housing (1), wherein the pressure-applying assembly (2) includes a plurality of pressure plates (21) and bearing plates (22), wherein a bearing plate (22) is disposed on both sides of each pressure plate (21), and the plurality of bearing plates (22) are slidably disposed in pairs on both sides of the inner wall of the housing (1), characterized in that, It also includes an extension mechanism (3) and a cleaning mechanism (4) located inside the support plate (22); The extension mechanism (3) includes a drive motor (31) fixedly disposed on the side of each bearing plate (22), a lead screw (32) fixedly disposed on the output end of the drive motor (31) via a coupling, a top block (33) sleeved on the side of the lead screw (32) and fixedly disposed at the bottom of the side edge of each pressure plate (21), a support seat (34) sleeved on the side of the lead screw (32) and fixedly disposed on the top of each bearing plate (22), and an auxiliary component (35) disposed on the side of each pressure plate (21) for maintaining the balance of the pressure plate (21). The cleaning mechanism (4) includes a connecting lever (41) rotatably disposed on the top of each support plate (22), a scraper (42) rotatably disposed on the side of each connecting lever (41), a return spring (43) fixedly disposed between the side of the connecting lever (41) and the support plate (22), a soft rope (44) fixedly disposed on the side of the connecting lever (41), a winding member (45) and a pressing member (46) disposed on the top of the support plate (22). The winding member (45) is used to pull the scraper (42) closer to the pressure plate (21), and the pressing member (46) is used to fix the position of the soft rope (44) to prevent the scraper (42) from approaching the pressure plate (21) in advance.

2. The pressure-applying device for circuit board packaging according to claim 1, characterized in that: The inner wall of the top block (33) is threaded to the side of the lead screw (32). The end of the top block (33) away from the pressure plate (21) abuts against the side of the bearing plate (22). The support seat (34) is provided with two seats located at different ends of the lead screw (32). The end of each support seat (34) away from the bearing plate (22) abuts against the side of the pressure plate (21).

3. The pressure-applying device for circuit board packaging according to claim 1, characterized in that: The auxiliary component (35) includes a protruding rod (351) fixedly disposed on the side of each pressure plate (21), a steel wire rope (352) fixedly disposed on the side of the protruding rod (351), a winding shaft (353) rotatably disposed on the bottom of each bearing plate (22) via a bracket, and a spring coil (354) fixedly disposed on the side of each winding shaft (353).

4. The pressure-applying device for circuit board packaging according to claim 3, characterized in that: Each of the wire ropes (352) is wound on the side of a winding shaft (353) connected to the adjacent bearing plate (22) directly above it, and the end of the spring coil (354) away from the winding shaft (353) is fixedly disposed on the side of the winding shaft (353) bracket.

5. The pressure-applying device for circuit board packaging according to claim 1, characterized in that: The winding component (45) includes a fixed frame (451) fixedly disposed at the bottom edge of each pressure plate (21), a pressing folding rod (452) fixedly disposed on the side of each pressure plate (21), a rotating seat (453) slidably disposed on the top of the bearing plate (22), a protruding plate (454) fixedly disposed on the top of the rotating seat (453), a rotating shaft (455) rotatably disposed on the inner wall of the rotating seat (453), a rubber wheel (456) sleeved on the end of the rotating shaft (455), a rubber sleeve (4551) sleeved and fixedly disposed on the side of the rotating shaft (455), a winding cylinder (4552) sleeved on the side of the rubber sleeve (4551), a spring coil II (457) fixedly disposed on the end of the rotating shaft (455) away from the rubber wheel (456), and a one-way unit (458) disposed on the end face of the rotating shaft (455) near the end face of the spring coil II (457).

6. The pressure-applying device for circuit board packaging according to claim 5, characterized in that: The unidirectional unit (458) includes a plurality of elastic plates (4581) fixedly disposed on the end face of the rotating shaft (455) near the end face of the spring coil (457), and a plurality of stop bars (4582) fixedly disposed on the side of the bearing plate (22) opposite to the rotating shaft (455). The plurality of elastic plates (4581) are uniformly arranged in a ring array on the end face of the rotating shaft (455), and the plurality of stop bars (4582) are uniformly arranged in a ring array on the side face of the bearing plate (22). Each elastic plate (4581) is inclinedly disposed on the end face of the rotating shaft (455).

7. The pressure-applying device for circuit board packaging according to claim 5, characterized in that: The fixing frame (451) is located at the end of the pressure plate (21) near the drive motor (31), the side of the extrusion folding rod (452) abuts against the side of the protrusion plate (454), the rotating seat (453) is located at the end of the bearing plate (22) away from the drive motor (31), a rubber sheet is fixedly provided at the bottom of the fixing frame (451), and a spring is fixedly provided between the rotating seat (453) and the side of the bearing plate (22).

8. The pressure-applying device for circuit board packaging according to claim 1, characterized in that: The clamping component (46) includes a stop plate (461) rotatably disposed on the side of the fixed frame (451), a guide wheel (462) fixedly disposed on the top of the bearing plate (22), a wedge block (463) slidably disposed on one side of the guide wheel (462), a blocking rod (464) rotatably disposed on the side of the wedge block (463), a transmission rod (465) slidably disposed on the top of the bearing plate (22) via a bracket, a Z-shaped frame (466) rotatably disposed on the top of the bearing plate (22), and a movable plate (467) rotatably disposed on the end of the Z-shaped frame (466) away from the transmission rod (465).

9. A pressure-applying device for circuit board packaging according to claim 8, characterized in that: A spring is fixedly installed between the side of the abutment plate (461) away from the drive motor (31) and the fixed frame (451). A spring is fixedly installed between the movable plate (467) and the side of the Z-shaped frame (466). A rubber sheet is fixedly installed on the side of the wedge block (463) near the guide wheel (462). A spring is fixedly installed between the side of the transmission rod (465) and the top support of the bearing plate (22). The end of the transmission rod (465) away from the Z-shaped frame (466) abuts against the side of the wedge block (463). The side of the Z-shaped frame (466) away from the movable plate (467) abuts against the end of the transmission rod (465). The end of the soft rope (44) away from the connecting folding rod (41) passes through the bottom of the guide wheel (462) and is wound around the side of the winding drum (4552). A spring is fixedly installed between the side of the obstruction rod (464) and the wedge block (463).

10. A pressure-applying device for circuit board packaging according to claim 1, characterized in that: The return spring (43) pushes the connecting lever (41) away from the bearing plate (22), and each of the scrapers (42) abuts against the bottom of the adjacent directly above pressure plate (21).

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