A circuit board processing system equipped with an elastic buffer pressing structure

Abstract

The present invention relates to the field of circuit board processing, and specifically to a circuit board processing system equipped with an elastic buffer pressing structure, which includes a casing and two sets of pressing plates symmetrically distributed left and right inside the casing. A number of pressing plates in the same set are equidistantly distributed up and down. Silicone pads are fixedly installed on the opposite sides of adjacent two pressing plates. An elastic buffer structure is installed inside the casing at the top of the uppermost pressing plate. A paper covering unit for laying release paper is installed on the pressing plate. A leveling unit for leveling the release paper is also installed on one side of the pressing plate where the silicone pad is provided. Through the mutual cooperation of the pressing plate, the paper covering unit and the leveling unit, the present invention automatically replaces and lays the release paper on the surface of the silicone pad and levels the laid release paper during the pressing and separation processes of the pressing plate, improving the pressing efficiency of flexible circuit boards.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board processing, and particularly to a circuit board processing system equipped with an elastic buffer pressing structure. Background Art

[0002] A flexible printed circuit board (abbreviated as FPC) is a highly reliable and extremely flexible printed circuit board made of polyimide or polyester film as the substrate. The pressing of the flexible printed circuit board (FPC) is a key process in its manufacturing process, directly affecting the reliability, interlayer bonding strength, and electrical performance of the circuit board. The flexible printed circuit board is generally pressed by a pressing machine. Before pressing, release paper needs to be covered on both the upper and lower sides of the flexible printed circuit board, and then the flexible printed circuit board covered with release paper is placed in the pressing machine for pressing treatment. The main purpose of covering the release paper is to prevent material adhesion and facilitate the removal of the pressed flexible printed circuit board from the pressing plate.

[0003] Before the existing flexible printed circuit board is pressed, generally, workers cover release paper on both the upper and lower surfaces of the flexible printed circuit board, and then transfer the flexible printed circuit board covered with release paper to the pressing plate in the pressing machine for pressing. After pressing, workers also need to manually remove the pressed flexible printed circuit board from the pressing plate, and then remove the release paper on both the upper and lower surfaces of the flexible printed circuit board, and then repeat the subsequent pressing work of the flexible printed circuit board. The above pressing steps also have the following deficiencies: 1. The efficiency of manually covering and removing the release paper on the flexible printed circuit board is relatively low, and the flexible printed circuit board can only be taken out and the release paper on the surface of the flexible printed circuit board can be removed after the pressing plate is completely opened. The efficiency of covering and removing the release paper on the flexible printed circuit board needs to be further improved; 2. During the process of placing the flexible printed circuit board covered with release paper on the pressing plate, since the textures of the flexible printed circuit board and the release paper are relatively soft, the release paper is likely to wrinkle during the transfer process. During the pressing process, the wrinkled release paper will affect the flatness of the surface of the flexible printed circuit board during pressing, thereby affecting the pressing quality of the flexible printed circuit board. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a circuit board processing system equipped with an elastic buffer pressing structure, including a machine shell and two groups of pressing plates symmetrically distributed left and right and installed inside the machine shell. A plurality of pressing plates in the same group are equidistantly distributed up and down. Silicone pads are fixedly installed on the opposite sides of adjacent two pressing plates. An electric push rod for pushing the lowermost pressing plate to move up and down is fixedly installed inside the machine shell. An elastic buffer structure is installed on the top of the uppermost pressing plate inside the machine shell. A paper covering unit for laying release paper is installed on the pressing plate. A leveling unit for leveling the release paper is also installed on the side of the pressing plate provided with the silicone pad.

[0005] The paper covering unit includes mounting frames fixedly installed on the left and right sides of the pressing plate. A rotating shaft is rotatably installed on the mounting frames. A winding roller and an unwinding roller are respectively connected to the left and right rotating shafts through splines. A driving assembly for driving the winding roller to rotate unidirectionally is installed on the rotating shaft corresponding to the winding roller, and a positioning assembly for positioning the unwinding roller is installed on the rotating shaft corresponding to the unwinding roller.

[0006] The flattening unit includes flattening rods one that are movably arranged left and right on the pressing plate and are symmetrically distributed left and right, and flattening rods two that are movably arranged front and back on the pressing plate and are symmetrically distributed front and back. A moving assembly for driving the corresponding flattening rods one and two to move left and right and front and back respectively and flattening the release paper is installed on the pressing plate.

[0007] In a possible implementation manner, a plurality of support frames are fixedly installed on the inner wall of the machine shell and are distributed at the four corners of the same group of pressing plates. A plurality of guiding grooves that are equidistantly distributed front and back and have an equal increment in height are formed on the side of the support frame close to the pressing plate. Except for the uppermost pressing plate, the other pressing plates distributed from top to bottom in the same group correspond to the guiding grooves distributed from front to back one by one, and the pressing plates are slidably connected up and down with the corresponding guiding grooves.

[0008] In a possible implementation manner, the elastic buffer structure includes an elastic telescopic rod fixedly installed on the inner top wall of the machine shell for elastically buffering the pressing plate. The bottom of the telescopic section of the elastic telescopic rod is fixedly connected to the top of the uppermost pressing plate. A top block located on the top of the uppermost pressing plate is also fixedly installed on the inner top wall of the machine shell.

[0009] In a possible implementation manner, the driving assembly includes a driven gear rotatably installed on the rotating shaft. A ratchet and pawl structure for restricting the driven gear to rotate in a single direction is installed between the driven gear and the rotating shaft. A driving rack is meshed with the side of the driven gear close to the corresponding pressing plate. The end of the driving rack away from the driven gear is fixedly connected to the adjacent pressing plate.

[0010] In a possible implementation manner, the positioning assembly includes a fixing plate fixedly installed on the rotating shaft. A plurality of positioning grooves that are circumferentially and evenly distributed are formed on the side of the fixing plate away from the corresponding unwinding roller. An installation block is rotatably installed on the rotating shaft between the fixing plate and the corresponding mounting frame. The installation block is fixedly connected to the corresponding mounting frame through bolts. A pair of positioning beads that are symmetrically distributed up and down are slidably installed on the side of the installation block opposite to the fixing plate. The positioning beads are matched with the positioning grooves, and a first return spring is fixedly connected between the positioning beads and the inner wall of the installation block.

[0011] In a possible implementation manner, the paper covering unit further includes guide rollers symmetrically distributed on the left and right sides of the silica gel pad. The guide rollers are rotatably installed on the corresponding pressing plates through roller frames. The release paper unrolled from the release roller is wound around the corresponding release roller after being guided by the guide rollers.

[0012] In a possible implementation manner, the moving assembly includes movable seats slidably installed up and down on the pressing plate and symmetrically distributed front and back with respect to the corresponding leveling rod one. A second return spring is fixedly connected between the side of the movable seat away from the leveling rod one and the inner wall of the pressing plate. A first rotating gear and a second rotating gear are rotatably installed on the side of the movable seat close to the corresponding leveling rod one. The first rotating gear and the corresponding second rotating gear are meshed and matched. A first rotating rod and a second rotating rod are respectively fixedly connected to the sides of the first rotating gear and the second rotating gear close to the center of the silica gel pad. One end of the first rotating rod away from the first rotating gear is hinged with a movable block, and the movable block is slidably connected to the leveling rod one in the front and back directions. A second slider is rotatably installed at the top of one end of the second rotating rod away from the second rotating gear, and the second slider is slidably connected to the leveling rod two in the left and right directions. A rotating component for driving the first rotating gear to rotate is further installed on the movable seat.

[0013] In a possible implementation manner, the rotating component includes a hollow prism fixedly installed on the side of the movable seat close to the corresponding leveling rod. The hollow prism is located at the center of the first rotating gear. A movable sleeve is slidably sleeved on the hollow prism up and down. A third return spring passing through the hollow prism is fixedly connected between the movable seat and the movable sleeve. A plurality of arc-shaped grooves are circumferentially and uniformly distributed on the inner wall of the first rotating gear. A first slider corresponding to each arc-shaped groove is fixedly connected to the movable sleeve, and the first slider is slidably connected to the corresponding arc-shaped groove.

[0014] In a possible implementation manner, chutes are provided at both the front and rear ends of the leveling rod one. One end of the movable block away from the corresponding first rotating rod is slidably installed in the corresponding chute in the front and back directions. A compression spring is fixedly connected between the side of the movable block away from the center of the leveling rod one and the inner wall of the leveling rod one.

[0015] In a possible implementation manner, movable grooves are provided at both the left and right ends of the leveling rod two. The second slider is slidably connected to the corresponding movable groove in the left and right directions. Rubber pads are fixedly installed on the sides of the leveling rod two and the leveling rod one close to the corresponding release paper, and the rubber pads are pressed against the surface of the corresponding release paper.

[0016] Advantages of the present invention: 1. Through the mutual cooperation of the pressing plate, the paper covering unit and the leveling unit, the present invention automatically re-lays the release paper on the surface of the silica gel pad and levels the laid release paper during the pressing and separating processes of the pressing plate. There is no need for manual covering of the release paper on the surface of the flexible circuit board, and the replacement of the release paper is completed during the opening process of the pressing plate, improving the pressing efficiency of the flexible circuit board and avoiding the occurrence of wrinkles on the release paper, thus improving the pressing quality of the flexible circuit board.

[0017] 2. During the pressing process of the pressing plate, the present invention uses the pressing force between adjacent pressing plates to drive the rotating member to drive the first rotating gear and the first rotating rod to rotate, so that the first leveling rod and the second leveling rod move away from the center of the pressing plate respectively to level the release paper and avoid the occurrence of wrinkles on the release paper. After leveling, the movable seat can contract towards the inside of the pressing plate under the push of the pressing force between adjacent pressing plates, and move the first leveling rod and the second leveling rod to the outside of the silica gel pad to avoid the first leveling rod and the second leveling rod affecting the mutual pressing between adjacent silica gel pads. Brief Description of the Drawings

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0019] Figure 2 is a cross-sectional view of the left side of the present invention.

[0020] Figure 3 is a three-dimensional structural schematic diagram of the pressing plate of the present invention.

[0021] Figure 4 is a three-dimensional structural schematic diagram of the film covering unit of the present invention.

[0022] Figure 5 is a partial cross-sectional view of the driving component of the present invention.

[0023] Figure 6 is a partial cross-sectional view of the positioning component of the present invention.

[0024] Figure 7 is a three-dimensional structural schematic diagram of the leveling unit of the present invention.

[0025] Figure 8 is a partial cross-sectional view of the moving component of the present invention.

[0026] Figure 9 is an exploded view of the leveling unit of the present invention.

[0027] Figure 10 is a three-dimensional structural schematic diagram of the first rotating gear of the present invention.

[0028] Figure 11 is a three-dimensional structural schematic diagram of the compression spring of the present invention.

[0029] Figure 12 It is a distribution diagram of the release papers on the upper and lower sides of the middle pressing plate of the present invention.

[0030] In the figure: 1. Cabinet; 11. Support frame; 12. Guide groove; 2. Pressing plate; 21. Silicone pad; 3. Electric push rod; 4. Elastic buffer structure; 41. Elastic telescopic rod; 42. Top block; 5. Paper covering unit; 51. Mounting frame; 52. Rotating shaft; 53. Winding roller; 54. Unwinding roller; 55. Driving assembly; 551. Driven gear; 552. Ratchet and pawl structure; 553. Driving rack; 56. Positioning assembly; 561. Fixed plate; 562. Positioning groove; 563. Mounting block; 564. Positioning bead; 565. First return spring; 57. Guide roller; 6. Flattening unit; 61. First flattening rod; 611. Chute; 612. Compression spring; 62. Second flattening rod; 621. Moving groove; 63. Moving assembly; 631. Moving seat; 632. Second return spring; 633. First rotating gear; 634. First rotating rod; 635. Movable block; 636. Rotating part; 6361. Hollow prism; 6362. Movable sleeve; 6363. Third return spring; 6364. Arc groove; 6365. First slider; 637. Second rotating gear; 638. Second rotating rod; 639. Second slider. Specific embodiments

[0031] To make the above objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0032] Please refer to Figures 1 - 3 , a circuit board processing system equipped with an elastic buffer pressing structure, including a cabinet 1 and two groups of pressing plates 2 installed inside the cabinet 1 and symmetrically distributed left and right. A plurality of pressing plates 2 in the same group are equally spaced up and down. The number of pressing plates 2 in the same group is three. Silicone pads 21 are fixedly installed on the directly opposite sides of adjacent two pressing plates 2. The silicone pads 21 play a buffering role during the pressing process to avoid damage to the flexible circuit board due to excessive pressure during pressing. An electric push rod 3 for moving the lowermost pressing plate 2 up and down is fixedly installed inside the cabinet 1. The top of the telescopic section of the electric push rod 3 is fixedly connected to the bottom of the lowermost pressing plate 2. An elastic buffer structure 4 is installed inside the cabinet 1 at the top of the uppermost pressing plate 2. A paper covering unit 5 for laying release paper is installed on the pressing plate 2. A flattening unit 6 for flattening the release paper is also installed on the side of the pressing plate 2 where the silicone pad 21 is provided.

[0033] Please refer to Figures 1 - 3 , on the inner wall of the casing 1, several support frames 11 are fixedly installed at the four corners of the same group of pressing plates 2. On the side of the support frame 11 close to the pressing plate 2, several guiding grooves 12 are arranged at equal intervals in the front and back and have an equal incremental height. Except for the topmost pressing plate 2, the other pressing plates 2 distributed from top to bottom in the same group correspond one by one to the guiding grooves 12 distributed from front to back, and the pressing plates 2 are slidably connected up and down with the corresponding guiding grooves 12. It should be noted that both the support frame 11 and the guiding groove 12 belong to the prior art. The guiding groove 12 is used to guide and support the corresponding pressing plate 2. On the one hand, it improves the stability of the pressing plate 2 during the up and down movement for pressing. On the other hand, when the pressing plate 2 moves downward and separates, it restricts the height of the different pressing plates 2 moving downward, making the pressing plates 2 evenly distributed at equal intervals up and down, which is convenient for placing the flexible circuit board on the silicone pad 21.

[0034] In the initial state, the three pressing plates 2 are in an evenly separated state. When the flexible circuit board needs to be pressed, first place the flexible circuit board on the release paper on the top of the silicone pad 21. Then, push the lowermost pressing plate 2 upward through the electric push rod 3. When the lowermost flexible circuit board contacts the release paper on the lower side of the middle pressing plate 2, the lowermost pressing plate 2 pushes the middle pressing plate 2 upward together. After that, the middle pressing plate 2 pushes the topmost pressing plate 2 upward and squeezes the elastic buffer structure 4, so that the three pressing plates 2 are mutually pressed to realize the pressing of the flexible circuit board. After the pressing is completed, the electric push rod 3 drives the lowermost pressing plate 2 to move downward, so that the three pressing plates 2 return to the initial height in sequence downward. Finally, take down the pressed flexible circuit board.

[0035] Please refer to Figure 1 and Figure 2 , the elastic buffer structure 4 includes an elastic telescopic rod 41 fixedly installed on the inner top wall of the casing 1 for elastically buffering the pressing plate 2. The bottom of the telescopic section of the elastic telescopic rod 41 is fixedly connected to the top of the topmost pressing plate 2. A top block 42 is also fixedly installed on the inner top wall of the casing 1 and is located on the top of the topmost pressing plate 2.

[0036] During the process of the electric push rod 3 pushing the pressing plate 2 upward, when the middle pressing plate 2 is pressed together with the topmost pressing plate 2, the elastic telescopic rod 41 can play an elastic buffering role on the topmost pressing plate 2, so that the topmost pressing plate 2 moves upward a small distance and then contacts the top block 42 and presses the flexible circuit board, avoiding the sudden increase in the pressure between adjacent pressing plates 2 causing the flexible circuit board to be damaged, and improving the yield rate of the flexible circuit board pressing.

[0037] Please refer to Figures 1 - 6, the paper covering unit 5 includes mounting brackets 51 fixedly installed on the left and right sides of the pressing plate 2. A rotating shaft 52 is rotatably installed on the mounting brackets 51. A winding roller 53 and an unwinding roller 54 are respectively connected to the left and right rotating shafts 52 by splines. A driving assembly 55 for driving the winding roller 53 to rotate unidirectionally is installed on the rotating shaft 52 corresponding to the winding roller 53, and a positioning assembly 56 for positioning the unwinding roller 54 is installed on the rotating shaft 52 corresponding to the unwinding roller 54.

[0038] The unused release paper is wound on the unwinding roller 54, and the end of the release paper is fixedly wound on the winding roller 53. The release paper is unwound and wound through the cooperation of the unwinding roller 54 and the winding roller 53, and the release paper is covered on the surface of the silicone pad 21. During the pressing process, it can prevent the flexible circuit board from adhering to the silicone pad 21, facilitating the separation of the flexible circuit board, eliminating the need for manual covering, and improving the efficiency of the pressing process of the flexible circuit board.

[0039] It should be noted that the unwinding roller 54 at the uppermost and lowermost positions unwinds single-layer release paper, and the other unwinding rollers 54 unwind double-layer release paper (as Figure 12 shown). After the double-layer release paper leaves the unwinding roller 54, it is divided into two single-layer release papers, which are then respectively covered on the silicone pads 21 on the upper and lower sides of the corresponding pressing plate 2. Finally, the two single-layer release papers are wound together by the winding roller 53 cooperating with the unwinding roller 54.

[0040] Please refer to Figures 1 - 6 , the driving assembly 55 includes a driven gear 551 rotatably installed on the rotating shaft 52. A ratchet and pawl structure 552 for restricting the driven gear 551 to rotate in a single direction is installed between the driven gear 551 and the rotating shaft 52. A driving rack 553 is meshed with one side of the driven gear 551 close to the corresponding pressing plate 2, and the end of the driving rack 553 away from the driven gear 551 is fixedly connected to the adjacent pressing plate 2.

[0041] By setting the ratchet and pawl structure 552 to restrict the rotation direction of the driven gear 551, when the electric push rod 3 pushes the pressing plate 2 upward, as the adjacent pressing plates 2 approach each other, the end of the driving rack 553 away from the corresponding driven gear 551 will approach the driven gear 551 under the push of the pressing plate 2. The driving rack 553 can drive the driven gear 551 to rotate. Due to the existence of the ratchet and pawl structure 552, at this time, the driven gear 551 cannot drive the rotating shaft 52 to rotate through the ratchet and pawl structure 552, preventing the winding roller 53 from winding the release paper during the pressing process.

[0042] When the electric push rod 3 drives the pressing plate 2 to move downward to separate adjacent pressing plates 2 from each other, as the distance between adjacent pressing plates 2 gradually increases, the end of the driving rack 553 away from the corresponding driven gear 551 will move away from the driven gear 551 under the drive of the pressing plate 2. By using the driving rack 553 to drive the driven gear 551 to rotate, the driven gear 551 drives the rotating shaft 52 and the winding roller 53 to rotate through the ratchet and pawl structure 552, so that the winding roller 53 winds the released release paper after pressing, enabling the release paper to take away the used part from the silicone pad 21 and cover the unused part back onto the silicone pad 21. During the winding process, the leveling rod 61 can block the flexible circuit board to prevent the flexible circuit board from moving with the release paper and being wound onto the unwinding roller 54. There is no need for manual laying of the release paper, which shortens the time spent on replacing the release paper, facilitates the subsequent pressing of the flexible circuit board, and improves the pressing efficiency of the flexible circuit board.

[0043] Please refer to Figures 1 - 6 , the positioning assembly 56 includes a fixing plate 561 fixedly installed on the rotating shaft 52. A plurality of circumferentially uniformly distributed positioning grooves 562 are formed on the side of the fixing plate 561 away from the corresponding unwinding roller 54. An installation block 563 is rotatably installed on the rotating shaft 52 between the fixing plate 561 and the corresponding mounting bracket 51. The installation block 563 is fixedly connected to the corresponding mounting bracket 51 by bolts. On the side of the installation block 563 opposite to the fixing plate 561, positioning beads 564 are slidably installed in the front and rear directions and are symmetrically distributed up and down. The positioning beads 564 cooperate with the positioning grooves 562, and a first return spring 565 is fixedly connected between the positioning beads 564 and the inner wall of the installation block 563.

[0044] By applying an elastic force to the positioning beads 564 to move them in the direction close to the fixing plate 561 through the first return spring 565, the positioning beads 564 can be engaged with the positioning grooves 562, which can position the rotating shaft 52 and the unwinding roller 54 and prevent the rotating shaft 52 and the unwinding roller 54 from rotating randomly, resulting in the release paper becoming loose. When the winding roller 53 winds the release paper, the pulling force of the release paper drives the unwinding roller 54 to rotate, and then the unwinding roller 54 drives the rotating shaft 52 and the fixing plate 561 to rotate against the engagement force between the positioning beads 564 and the positioning grooves 562, so that the unwinding roller 54 unwinds the release paper. When the positioning groove 562 is misaligned with the positioning bead 564, the positioning bead 564 will move into the interior of the installation block 563 under the extrusion of the fixing plate 561, compressing the first return spring 565. When the positioning groove 562 is directly opposite to the positioning bead 564, the positioning bead 564 will be pushed by the first return spring 565 to cooperate with the positioning groove 562 again.

[0045] Please refer to Figure 4 and Figure 12, the paper covering unit 5 further includes guide rollers 57 symmetrically distributed on the left and right sides of the silica gel pad 21. The guide rollers 57 are rotatably mounted on the corresponding pressing plates 2 through roller frames. The release paper unrolled from the unwind roller 54 is guided by the guide rollers 57 and then wound around the corresponding winding roller 53.

[0046] By arranging the guide rollers 57 to guide the release paper, the release paper can be attached to the surface of the silica gel pad 21, enabling the unwind roller 54 and the winding roller 53 to smoothly unwind and wind the release paper, reducing the possibility of the release paper wrinkling during the unwinding and winding processes, and thus improving the flatness of the release paper.

[0047] Please refer to Figure 2 , Figure 3 , Figure 7 , the leveling unit 6 includes leveling rods one 61 that are movably arranged left and right on the pressing plate 2 and symmetrically distributed left and right, and leveling rods two 62 that are movably arranged front and back on the pressing plate 2 and symmetrically distributed front and back. A moving component 63 is installed on the pressing plate 2 to drive the corresponding leveling rods one 61 and leveling rods two 62 to move left and right and front and back respectively and level the release paper.

[0048] Please refer to Figure 2 , Figure 3 , Figure 7 , Figure 8 and Figure 9 , the moving component 63 includes movable seats 631 that are slidably mounted up and down on the pressing plate 2 and symmetrically distributed front and back with respect to the corresponding leveling rods one 61. A return spring two 632 is fixedly connected between the side of the movable seat 631 away from the leveling rod one 61 and the inner wall of the pressing plate 2. A rotating gear one 633 and a rotating gear two 637 are rotatably mounted on the side of the movable seat 631 close to the corresponding leveling rod one 61. The rotating gear one 633 and the corresponding rotating gear two 637 are in meshing engagement. A rotating rod one 634 and a rotating rod two 638 are respectively fixedly connected to the sides of the rotating gear one 633 and the rotating gear two 637 close to the center of the silica gel pad 21. One end of the rotating rod one 634 away from the rotating gear one 633 is hinged to a movable block 635, and the movable block 635 is slidably connected to the leveling rod one 61 front and back. A slider two 639 is rotatably mounted at the top of one end of the rotating rod two 638 away from the rotating gear two 637, and the slider two 639 is slidably connected to the leveling rod two 62 left and right. A rotating component 636 for driving the rotating gear one 633 to rotate is also installed on the movable seat 631.

[0049] Please refer to Figure 3 , Figure 7 , Figure 8 , Figure 9 and Figure 10, the rotating member 636 includes a hollow prism 6361 fixedly installed on one side of the movable seat 631 close to the corresponding leveling rod 61. The hollow prism 6361 is located at the center of the first rotating gear 633. A movable sleeve 6362 is slidably sleeved on the hollow prism 6361 up and down. A third return spring 6363 passing through the hollow prism 6361 is fixedly connected between the movable seat 631 and the movable sleeve 6362. A number of arc-shaped grooves 6364 evenly distributed in the circumferential direction are formed on the inner wall of the first rotating gear 633. A first slider 6365 corresponding to the arc-shaped groove 6364 one by one is fixedly connected to the movable sleeve 6362. The first slider 6365 is slidably connected to the corresponding arc-shaped groove 6364.

[0050] Please refer to Figure 3 , Figure 7 , Figure 8 , Figure 9 and Figure 10 , the hollow prism 6361 guides the movable sleeve 6362 to prevent the movable sleeve 6362 from deflecting; in the initial state, both the first leveling rod 61 and the second leveling rod 62 are located on the side of the release paper away from the corresponding silica gel pad 21. Before two adjacent silica gel pads 21 are pressed together, the two movable sleeves 6362 facing each other up and down first come into contact with each other, and then the movable sleeve 6362 moves towards the corresponding movable seat 631 under the action of the pressing force, causing the third return spring 6363 to be compressed and contracted. At the same time, the movable seat 631 will also move a short distance into the pressing plate 2 under the action of the pressing force, so that the first leveling rod 61 and the second leveling rod 62 are pressed against the surface of the release paper. After that, due to the blockage of the silica gel pad 21, the movable seat 631 stops moving; when the movable sleeve 6362 moves, it will drive the first slider 6365 to move together. The first slider 6365 slides along the arc-shaped groove 6364 and drives the first rotating gear 633 and the first rotating rod 634 to deflect 90 degrees towards the outside of the pressing plate 2, and then the first rotating rod 634 pushes the movable block 635 and the first leveling rod 61 to move away from the center of the pressing plate 2, so that the first leveling rod 61 levels the release paper in the left-right direction.

[0051] During the rotation of the first rotating gear 633, it will drive the second rotating gear 637 to rotate in the opposite direction. The second rotating gear 637 drives the second rotating rod 638 to deflect 90 degrees towards the outside of the pressing plate 2, and then the second rotating rod 638 drives the second leveling rod 62 to move away from the center of the pressing plate 2, so that the second leveling rod 62 levels the release paper in the front-back direction, preventing the release paper from wrinkling and improving the pressing quality of the flexible circuit board.

[0052] When the first rotating rod 634 and the second rotating rod 638 rotate by 90 degrees, the movable sleeve 6362 is completely pressed into the interior of the first rotating gear 633. At this time, the first rotating rod 634 and the second rotating rod 638 no longer continue to rotate. At the same time, the first leveling rod 61 and the second leveling rod 62 are pushed to the outside of the vertical projection plane of the silica gel pad 21. The first leveling rod 61 and the second leveling rod 62 are no longer blocked by the silica gel pad 21. After that, as the adjacent pressing plates 2 continue to approach, the movable seat 631 moves inward into the pressing plate 2 again under the action of the pressing force. At this time, the second return spring 632 is compressed and contracted. The movable seat 631 will drive the first leveling rod 61 to move to the left and right sides of the silica gel pad 21 and drive the second leveling rod 62 to move to the front and back sides of the silica gel pad 21, preventing the first leveling rod 61 and the second leveling rod 62 from blocking the mutual pressing of the adjacent silica gel pads 21.

[0053] When the first leveling rod 61 moves to the left and right sides of the pressing plate 2, the first leveling rod 61 can press down on the left and right sides of the release paper on the silica gel pad 21, making the release paper better adhere to the silica gel pad 21, exhausting the air between the release paper and the silica gel pad 21, preventing the release paper from bulging during the pressing process, and further improving the flatness of the release paper.

[0054] After the pressing is completed, the adjacent two pressing plates 2 are separated from each other. At this time, the movable seat 631 moves outward from the pressing plate 2 under the action of the return spring force of the second return spring 632. At the same time, the movable sleeve 6362 has a tendency to move outward from the first rotating gear 633 under the pushing of the return spring force of the third return spring 6363. However, since the first leveling rod 61 is located on the left and right sides of the silica gel pad 21 and the second leveling rod 62 is located on the front and back sides of the silica gel pad 21, the first rotating rod 634 and the second rotating rod 638 will be blocked by the silica gel pad 21 and cannot deflect inward towards the pressing plate 2. When the movable seat 631 moves outward from the pressing plate 2 to the maximum extent, the first leveling rod 61 and the second leveling rod 62 move between the adjacent two silica gel pads 21. At this time, the first rotating rod 634 and the second rotating rod 638 are no longer blocked by the silica gel pad 21. The movable sleeve 6362 is pushed to move outward from the first rotating gear 633 by the return spring force of the third return spring 6363. The first rotating gear 633 is pushed to rotate in the reverse direction by the mutual cooperation of the first slider 6365 and the arc-shaped groove 6364. Thus, the first rotating rod 634 pushes the movable block 635 and the first leveling rod 61 to move towards the center of the pressing plate 2, making the first leveling rod 61 return to the side of the silica gel pad 21 away from the corresponding pressing plate 2. When the first rotating gear 633 rotates in the reverse direction, it will drive the second rotating gear 637 to rotate in the reverse direction, causing the second rotating rod 638 to drive the second leveling rod 62 to move towards the center of the pressing plate 2, making the second leveling rod 62 return to the side of the silica gel pad 21 away from the corresponding pressing plate 2.

[0055] Please refer to Figure 7 、 Figure 8 and Figure 11, both the front and rear ends of the leveling rod 61 are provided with sliding grooves 611. One end of the movable block 635 far from the corresponding first rotating rod 634 is slidably mounted in the corresponding sliding groove 611 in the front and rear directions. A compression spring 612 is fixedly connected between one side of the movable block 635 far from the center of the leveling rod 61 and the inner wall of the leveling rod 61.

[0056] When the first rotating rod 634 pushes the movable block 635 to move in a direction away from the center of the pressing plate 2, the movable block 635 will slide along the sliding groove 611. The compression springs 612 on the front and rear sides apply the same elastic force to the leveling rod 61 during the movement of the movable block 635, so that the leveling rod 61 is in a centered state in the front and rear directions, avoiding the situation that the leveling rod 61 deflects in the front and rear directions during the left and right movement.

[0057] Please refer to Figure 7 and Figure 8 , both the left and right ends of the leveling rod 62 are provided with movable grooves 621. The second slider 639 is slidably connected to the corresponding movable groove 621 in the left and right directions. Rubber pads are fixedly installed on the sides of the leveling rod 62 and the leveling rod 61 close to the corresponding silica gel pad 21. The rubber pads are pressed against the surface of the corresponding release paper.

[0058] When the second rotating rod 638 pushes the leveling rod 62 to move in a direction away from the center of the pressing plate 2, the second slider 639 will slide along the movable groove 621 in the left and right directions. The movable groove 621 provides sufficient offset for the deflection of the second slider 639; the rubber pads at the bottoms of the leveling rod 61 and the leveling rod 62 can increase the friction with the release paper, so that the leveling rod 61 and the leveling rod 62 can stretch and level the release paper, and at the same time reduce the impact force when the leveling rod 61 and the leveling rod 62 are pressed against the release paper, avoiding the appearance of indentations when the release paper is pressed by the leveling rod 61 and the leveling rod 62.

[0059] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0060] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore: all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A circuit board processing system with an elastic buffer pressing structure, comprising a housing (1) and two groups of pressing plates (2) installed inside the housing (1) and symmetrically distributed left and right, wherein a plurality of pressing plates (2) in the same group are equidistantly distributed up and down, and a silicone pad (21) is fixedly installed on the opposite side of two adjacent pressing plates (2), characterized in that: An elastic buffer structure (4) located on the top of the uppermost pressing plate (2) is installed inside the housing (1); a paper covering unit (5) for laying release paper is installed on the pressing plate (2); and a leveling unit (6) for leveling the release paper is also installed on one side of the pressing plate (2) provided with a silicone pad (21); The paper covering unit (5) comprises a mounting frame (51) fixedly mounted on the left and right sides of the pressing plate (2); a rotating shaft (52) is rotatably mounted on the mounting frame (51); a winding roller (53) and an unwinding roller (54) are respectively connected to the two rotating shafts (52) via splines; a driving component (55) for driving the winding roller (53) to rotate in one direction is mounted on the rotating shaft (52) corresponding to the winding roller (53); and a positioning component (56) for positioning the unwinding roller (54) is mounted on the rotating shaft (52) corresponding to the unwinding roller (54); The flattening unit (6) comprises a flattening rod (61) which is movably arranged on the pressing plate (2) and is symmetrically arranged on the left and right sides, and a flattening rod (62) which is movably arranged on the pressing plate (2) and is symmetrically arranged on the front and back sides. The pressing plate (2) is provided with a moving component (63) which drives the corresponding flattening rod (61) and the corresponding flattening rod (62) to move left and right and front and back respectively and flatten the release paper. The elastic buffer structure (4) comprises an elastic telescopic rod (41) fixedly mounted on the inner top wall of the housing (1) for implementing elastic buffering on the pressing plate (2); the bottom of the telescopic section of the elastic telescopic rod (41) is fixedly connected to the top of the uppermost pressing plate (2); a top block (42) located on the top of the uppermost pressing plate (2) is also fixedly mounted on the inner top wall of the housing (1); the moving assembly (63) comprises a movable seat (631) slidably mounted on the pressing plate (2) and symmetrically distributed frontward and rearward with respect to the corresponding leveling rod (61); a return spring (632) is fixedly connected between a side of the movable seat (631) away from the leveling rod (61) and the inner wall of the pressing plate (2); and a rotating gear is rotatably mounted on a side of the movable seat (631) close to the corresponding leveling rod (61). One (633) and a rotating gear two (637), the rotating gear one (633) and the corresponding rotating gear two (637) are meshed and matched, the rotating gear one (633) and the rotating gear two (637) are respectively fixedly connected with a rotating rod one (634) and a rotating rod two (638) on one side close to the center of the silicone pad (21), the rotating rod one (634) is hinged with a movable block (635) at one end away from the rotating gear one (633), the front and rear ends of the leveling rod one (61) are both provided with a sliding groove (611), the movable block (635) is slidably installed in the corresponding sliding groove (611) at one end away from the corresponding rotating rod one (634), and a compression spring (612) is fixedly connected between the side of the movable block (635) away from the center of the leveling rod one (61) and the inner wall of the leveling rod one (61).

2. A circuit board processing system with an elastic buffer pressing structure according to claim 1, characterized in that: A plurality of support frames (11) are fixedly mounted on the inner wall of the casing (1) and are distributed at the four corners of the same group of pressing plates (2). A plurality of guide grooves (12) are provided on one side of the support frame (11) close to the pressing plates (2) and are equidistantly distributed front to back and with increasing heights in equal amounts. Except for the top pressing plate (2), the other pressing plates (2) distributed from top to bottom in the same group correspond one to one with the guide grooves (12) distributed from front to back, and the pressing plates (2) are connected to the corresponding guide grooves (12) in an upward and downward sliding manner. An electric push rod (3) is fixedly mounted inside the casing (1) and is used to push the bottom pressing plate (2) to move up and down.

3. A circuit board processing system with an elastic buffer pressing structure according to claim 1, characterized in that: The driving assembly (55) comprises a driven gear (551) rotatably mounted on a rotating shaft (52); a ratchet pawl structure (552) is mounted between the driven gear (551) and the rotating shaft (52) for limiting the driven gear (551) from rotating in one direction; a driving rack (553) is meshed with a side of the driven gear (551) close to the corresponding pressing plate (2); and an end of the driving rack (553) away from the driven gear (551) is fixedly connected to an adjacent pressing plate (2).

4. A circuit board processing system with an elastic buffer pressing structure according to claim 1, characterized in that: The positioning assembly (56) comprises a fixing plate (561) fixedly mounted on the rotating shaft (52); a plurality of positioning grooves (562) evenly distributed in the circumferential direction are formed on a side of the fixing plate (561) away from the corresponding unwinding roller (54); a mounting block (563) rotatably mounted on the rotating shaft (52) and located between the fixing plate (561) and the corresponding mounting frame (51); the mounting block (563) is fixedly connected to the corresponding mounting frame (51) via bolts; positioning beads (564) symmetrically distributed up and down are slidably mounted on a side of the mounting block (563) opposite to the fixing plate (561) in a forward and backward manner; the positioning beads (564) cooperate with the positioning grooves (562); and a return spring (565) is fixedly connected between the positioning beads (564) and the inner wall of the mounting block (563).

5. A circuit board processing system with an elastic buffer pressing structure according to claim 1, characterized in that: The paper covering unit (5) further comprises guide rollers (57) symmetrically distributed on the left and right sides of the silicone pad (21); the guide rollers (57) are rotatably mounted on the corresponding pressing plate (2) via a roller frame; the release paper unwound from the unwinding roller (54) is guided by the guide rollers (57) and then wound onto the corresponding unwinding roller (54).

6. A circuit board processing system with an elastic buffer pressing structure according to claim 1, characterized in that: The movable block (635) is connected to the leveling rod (61) in a forward and backward sliding manner. The top of the rotating rod (638) away from the rotating gear (637) is rotatably mounted with a slider (639). The slider (639) is connected to the leveling rod (62) in a left and right sliding manner. A rotating component (636) for driving the rotating gear (633) to rotate is also mounted on the movable seat (631).

7. A circuit board processing system with an elastic buffer pressing structure according to claim 6, characterized in that: The rotating component (636) includes a hollow prism (6361) fixedly mounted on a movable seat (631) near a side of a corresponding leveling rod (61); the hollow prism (6361) is located at the center of a rotating gear (633); a movable sleeve (6362) is slidably mounted on the hollow prism (6361); a return spring (6363) penetrating the hollow prism (6361) is fixedly connected between the movable seat (631) and the movable sleeve (6362); a plurality of arc grooves (6364) uniformly distributed in the circumferential direction are formed on the inner wall of the rotating gear (633); a slider (6365) corresponding to the arc grooves (6364) is fixedly connected to the movable sleeve (6362); and the slider (6365) is slidably connected to the corresponding arc groove (6364).

8. A circuit board processing system with an elastic buffer pressing structure according to claim 6, characterized in that: The left and right ends of the second leveling rod (62) are both provided with movable grooves (621), and the second slider (639) is slidably connected to the corresponding movable grooves (621) left and right. The second leveling rod (62) and the first leveling rod (61) are both fixedly installed with rubber pads on one side close to the corresponding silicone pad (21), and the rubber pads are pressed tightly against the surface of the corresponding release paper.

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