A device for improving the warping of a circuit board

Abstract

The present invention discloses a device for improving the warping of a circuit board, which relates to the technical field of circuit boards. The device for improving the warping of a circuit board includes a workbench and also includes a hot pressing device. Among them, a mounting plate is fixedly installed on the surface of the workbench, a servo motor is fixedly installed above the mounting plate, and a placement table is fixedly installed above the workbench. Among them, the hot pressing device includes a pressing rod, a fixed frame, a hot pressing plate, a receiving table and a rubber strip. The pressing rod is fixedly installed at the output end of the servo motor, the fixed frame is fixedly installed below the pressing rod, the hot pressing plate is fixedly installed on the surface of the fixed frame, and the receiving table is slidably installed above the workbench. This device for improving the warping of a circuit board can effectively prevent the warped circuit board from directly contacting and rubbing against the receiving table to cause wear, improve the leveling effect of the warped circuit board, avoid further wear and reduce the service life of the circuit board.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit boards, and specifically to a device for improving the warping of circuit boards. Background Art

[0002] The warping of a circuit board refers to the bending or warping phenomenon that occurs during the manufacturing or use of the circuit board. In actual production, solving the problem of circuit board warping usually requires comprehensive consideration of multiple factors.

[0003] The patent with the patent publication number CN216531915U relates to a double-sided multi-layer structured circuit board with no warping and high heat dissipation, including an upper circuit board, a first circuit board, a second circuit board, and a lower circuit board. Installation holes are provided at the four corners of the upper circuit board, the first circuit board, the second circuit board, and the lower circuit board. Card slots are provided in the middle of the upper circuit board, the first circuit board, the second circuit board, and the lower circuit board. A number of vias are provided between the two connector mounting slots and the card slots. The double-sided multi-layer structured circuit board of this patent is provided with a connection layer, an upper protective film, and a lower protective film. Through the connection layer, the multi-layer circuit boards can be tightly connected by hot pressing. At the same time, through the curing layer and the insulating layer in the connection layer, the structural warping of the circuit board can be prevented, improving the practicability of the device. Through the upper protective film and the lower protective film, it is convenient to protect the top and bottom surfaces of the circuit board, strengthening the protection during the transportation of the completed circuit board body.

[0004] In the above patent, through the upper protective film and the lower protective film, it is convenient to protect the top and bottom surfaces of the circuit board, strengthening the protection during the transportation of the completed circuit board body. However, during the actual hot pressing process of the circuit board, the warped circuit board will come into contact and friction with the placement table during the straightening process, resulting in wear, thereby reducing the quality of the circuit board and affecting its service life. Therefore, a device for improving the warping of circuit boards is designed. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a device for improving the warping of circuit boards, solving the problems raised in the above background art.

[0006] To achieve the above object, the present invention is realized by the following technical solutions: A device for improving the warping of a circuit board, including a workbench, further including a hot pressing device and a limiting device; wherein, an installation plate is fixedly installed on the surface of the workbench, a servo motor is fixedly installed above the installation plate, and a placement table is fixedly installed above the workbench; wherein, the hot pressing device includes a pressing rod, a fixed frame, a hot pressing plate, a receiving table and a rubber strip. The output end of the servo motor moves downward to drive the pressing rod to move downward, the pressing rod moves downward to drive the fixed frame to move downward, and the fixed frame moves downward to drive the hot pressing plate to move downward. The pressing rod is fixedly installed at the output end of the servo motor, the fixed frame is fixedly installed below the pressing rod, the hot pressing plate is fixedly installed on the surface of the fixed frame, the receiving table is slidably installed above the workbench, the rubber strip is fixedly installed above the receiving table, and a first clock spring is arranged between the receiving table and the workbench. During the flattening process, the two ends of the warped circuit board will contact and drive the rubber strip to move, and the movement of the rubber strip drives the receiving table to move, which can effectively prevent the warped circuit board from directly contacting and rubbing against the receiving table and causing wear, improve the flattening effect of the warped circuit board, avoid further wear and reduce the service life of the circuit board.

[0007] According to the above technical solution, an L-shaped rod is fixedly installed on the surface of the fixed frame, a moving plate is slidably installed above the workbench, a conduction rod is fixedly installed on the surface of the moving plate, a push plate is fixedly installed at the end of the conduction rod away from the moving plate, the upper surface of the moving plate is provided with an inclined surface one, and a second clock spring is arranged between the moving plate and the workbench. The movement of the conduction rod drives the push plate to move, and the push plate moves to contact and push the circuit board to directly below the hot pressing plate, avoiding the incorrect placement position of the circuit board and thus affecting the hot pressing effect on the circuit board.

[0008] According to the above technical solution, the limiting device includes an inclined rod, a lifting rod, a triangular block, a baffle and a limiting rod. The movement of the receiving table drives the inclined rod to move, the movement of the inclined rod drives the lifting rod to move upward, and the upward movement of the lifting rod drives the triangular block to move upward. The inclined rod is hinged on the surface of the receiving table, the lifting rod is slidably installed on the surface of the workbench, the triangular block is fixedly installed on the surface of the lifting rod, a first chute is opened on the surface of the workbench, the baffle is slidably installed inside the first chute, the limiting rod slidably penetrates the left and right walls of the baffle, a third clock spring is arranged between the baffle and the inner wall of the first chute, the end of the limiting rod close to the triangular block is provided with an inclined surface two, and a fourth clock spring is arranged between the limiting rod and the baffle. After the limiting rod moves and resets, it limits the triangular block, which can effectively prevent the receiving table from rebounding and squeezing the circuit board after the hot pressing is completed, thereby causing secondary damage to the circuit board and reducing the subsequent maintenance cost.

[0009] According to the above technical solution, a receiving rod slidably penetrates through the surface of the baffle plate. A pressing block is fixedly installed on the surface of the L-shaped rod. The surface of the receiving rod is formed as an inclined plane three, and the upper part of the pressing block is formed as an inclined plane four. The movement of the receiving rod drives the movement of the baffle plate, and the movement of the baffle plate drives the movement of the limiting rod and contacts the limit of the triangular block, so that the receiving table is reset to avoid affecting the subsequent hot pressing of the circuit board.

[0010] According to the above technical solution, it further includes a preheating device and a lubricating device. The preheating device includes a preheating frame, a horizontal pipe, a connecting pipe, a vertical pipe, a diversion frame, a limiting plate and a pull rod. The upward movement of the lifting rod drives the upward movement of the pull rod, and the upward movement of the pull rod drives the upward movement of the limiting plate. The preheating frame is fixedly installed below the receiving table. The horizontal pipe fixedly penetrates the inner and outer walls of the fixed frame. The connecting pipe is slidably installed inside the horizontal pipe. The vertical pipe is slidably installed at the end of the connecting pipe away from the horizontal pipe. A chute two is opened on the surface of the receiving table. The diversion frame is fixedly installed inside the chute two. The limiting plate is slidably installed on the surface of the diversion frame. The pull rod is fixedly installed on the surface of the lifting rod. One end of the pull rod away from the lifting rod is fixedly connected to the limiting plate. The end of the vertical pipe away from the connecting pipe fixedly penetrates the upper inner and outer walls of the diversion frame. The preheating frame and the diversion frame are communicated through an air pipe. An air hole one is opened on the surface of the diversion frame. The upward movement of the limiting plate contacts and limits the air hole one on the surface of the diversion frame, so that hot air is discharged through the air hole one to preheat the upper part of the circuit board, avoiding the circuit board directly contacting the hot pressing plate and causing too fast temperature rise to affect the hot pressing effect, and improving the leveling effect of the circuit board.

[0011] According to the above technical solution, air holes two are opened on the surface of the placing table, air holes three are opened on the surface of the preheating frame, and air holes four are opened on the surface of the receiving table. A clockwork spring five is arranged between the limiting plate and the diversion frame. The hot air inside the diversion frame enters the inside of the preheating frame through the air pipe, and passes through the air holes three on the surface of the preheating frame through the surfaces of the placing table and the receiving table to preheat the lower part of the circuit board, making the preheating of the circuit board more uniform, improving the preheating effect, and further increasing the leveling effect.

[0012] The surface of the limit box is provided with an oil inlet, and the push rod slides through the inner and outer walls of the oil storage tank, and the surface of the limit box is fixedly penetrated by a nozzle, and the movement of the push rod drives the extrusion plate to move, and the extrusion plate moves to close the oil inlet on the surface of the limit box and squeezes the lubricating oil inside it, so that the lubricating oil is discharged through the nozzle to lubricate the connection between the baffle plate and the limit rod, thereby improving the limiting effect and avoiding excessive lubricating oil being discharged and causing waste.

[0013] According to the above technical solution, an L-shaped plate is fixedly installed on the surface of the workbench, and a pressure valve is arranged inside the nozzle to push the oil storage tank to move so as to break away from the contact with the L-shaped plate. The movement of the oil storage tank drives the push rod to move and break away from the motion track of the push block, which can effectively reduce the subsequent maintenance costs.

[0014] The present invention provides a device for improving the warping of a circuit board, which has the following beneficial effects:

[0015] (1) The device for improving the warping of the circuit board, during the hot pressing process of the circuit board, the warped circuit board contacts the rubber strip and squeezes the receiving platform to move, thereby preventing the warped circuit board from directly contacting and rubbing with the receiving platform and causing wear, thereby improving the leveling effect of the warped circuit board, avoiding further wear and reducing the service life of the circuit board, and at the same time, the fixed frame moves downward to drive the conduction rod and the push plate to move through the L-shaped rod and the moving plate, pushing the circuit board to the bottom of the hot pressing plate, thereby preventing the circuit board from being placed in the wrong position and thus affecting the hot pressing effect of the circuit board.

[0016] (2) The device for improving the warping of the circuit board, the receiving platform moves through the inclined rod and the lifting rod to drive the triangular block to move and squeeze the limit rod and be limited, which can effectively prevent the receiving platform from rebounding and squeezing the circuit board after the hot pressing is completed, thereby causing secondary damage to the circuit board, reducing the subsequent maintenance cost. When the fixing frame moves downward to hot press the subsequent circuit board, the L-shaped rod moves downward to squeeze the receiving rod through the pressing block and drive the baffle to move, so that the limit rod moves away from the triangular block and releases the limit, so that the storage platform is reset to avoid affecting the subsequent circuit board when hot pressing is performed.

[0017] (3) The device for improving the warping of the circuit board, the lifting rod moves upward and drives the baffle to move through the pull rod to release the limit of the air hole 1 on the surface of the guide frame, so that the hot air inside the guide frame is discharged through the air hole to preheat the upper part of the circuit board, avoiding the circuit board directly contacting the hot pressing plate to cause excessive temperature rise and affect the effect of hot pressing, thereby improving the leveling effect of the circuit board. At the same time, the hot air inside the guide frame enters the interior of the preheating frame and is discharged from the air hole 2 and the air hole 3 to preheat the lower part of the circuit board, making the preheating of the circuit board more uniform, improving the preheating effect, and further increasing the leveling effect.

[0018] (4) The device for improving the warping of the circuit board, the pressure block moves upward and drives the push rod to move through the receiving rod and the push block, so that the pressure plate closes the oil inlet on the surface of the limit box and squeezes the lubricating oil inside it to be sprayed out through the nozzle, lubricating the connection between the baffle and the limit rod, improving the limit effect while avoiding excessive lubricating oil being discharged and causing waste. When maintenance is not needed, the oil storage tank is pushed to break away from the contact with the L-shaped plate, so that the push block is separated from the movement track of the push rod, which can effectively reduce the subsequent maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the position structure of the fixing frame and the hot pressing plate of the present invention;

[0021] Figure 3 This is a schematic diagram of the position structure of the push plate and the movable plate of the present invention;

[0022] Figure 4 For the present invention Figure 3 The enlarged structural diagram of part A in the middle;

[0023] Figure 5 This is a schematic diagram of the position structure of the L-shaped rod and the baffle of the present invention;

[0024] Figure 6 For the present invention Figure 5 The enlarged structural diagram of part B in the middle;

[0025] Figure 7 It is a schematic diagram of the position structure of the receiving platform and the guide frame of the present invention;

[0026] Figure 8 This is a schematic diagram of the position structure of the oil storage tank and the limit box of the present invention;

[0027] Figure 9 For the present invention Figure 8 Schematic diagram of the enlarged structure of part C in the middle.

[0028] In the figure: 1, workbench; 2, mounting plate; 3, servo motor; 4, placing table; 51, pressing rod; 52, fixed frame; 53, hot pressing plate; 54, receiving table; 55, rubber strip; 56, L-shaped rod; 57, moving plate; 58, conduction rod; 59, pushing plate; 61, inclined rod; 62, lifting rod; 63, triangular block; 64, baffle; 65, limiting rod; 66, receiving rod; 67, pressing block; 71, preheating frame; 72, horizontal pipe; 73, connecting pipe; 74, vertical pipe; 75, diversion frame; 76, limiting plate; 77, pull rod; 81, oil storage tank; 82, limiting box; 83, extrusion plate; 84, push rod; 85, pushing block; 86, L-shaped plate. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-6 , an embodiment of the present invention is: a device for improving the warping of a circuit board, including a workbench 1, and further including a hot pressing device and a limiting device; wherein, a mounting plate 2 is fixedly installed on the surface of the workbench 1, a servo motor 3 is fixedly installed above the mounting plate 2, and a placing table 4 is fixedly installed above the workbench 1; wherein, the hot pressing device includes a pressing rod 51, a fixed frame 52, a hot pressing plate 53, a receiving table 54 and a rubber strip 55. The output end of the servo motor 3 moves downward to drive the pressing rod 51 to move downward. The pressing rod 51 moves downward to drive the fixed frame 52 to move downward. The fixed frame 52 moves downward to drive the hot pressing plate 53 to move downward. The pressing rod 51 is fixedly installed at the output end of the servo motor 3. The fixed frame 52 is fixedly installed below the pressing rod 51. The hot pressing plate 53 is fixedly installed on the surface of the fixed frame 52. The receiving table 54 is slidably installed above the workbench 1. The rubber strip 55 is fixedly installed above the receiving table 54. A first clockwork spring is provided between the receiving table 54 and the workbench 1. During the flattening process, the two ends of the warped circuit board will contact and drive the rubber strip 55 to move. The rubber strip 55 moves to drive the receiving table 54 to move, which can effectively prevent the warped circuit board from directly contacting and rubbing against the receiving table 54 and causing wear, improve the flattening effect of the warped circuit board, avoid further wear and reduce the service life of the circuit board.

[0031] The surface of the fixed frame 52 is fixedly installed with an L-shaped rod 56. A moving plate 57 is slidably installed above the workbench 1. The surface of the moving plate 57 is fixedly installed with a conduction rod 58. One end of the conduction rod 58 away from the moving plate 57 is fixedly installed with a push plate 59. The upper part of the moving plate 57 is provided with an inclined plane one. A torsion spring two is arranged between the moving plate 57 and the workbench 1. The movement of the conduction rod 58 drives the movement of the push plate 59. The push plate 59 moves to contact and push the circuit board directly below the hot pressing plate 53, avoiding the incorrect placement of the circuit board and thus affecting the hot pressing effect on the circuit board.

[0032] The limiting device includes an inclined rod 61, a lifting rod 62, a triangular block 63, a baffle 64 and a limiting rod 65. The movement of the receiving table 54 drives the movement of the inclined rod 61. The movement of the inclined rod 61 drives the lifting rod 62 to move upward. The upward movement of the lifting rod 62 drives the triangular block 63 to move upward. The inclined rod 61 is hinged on the surface of the receiving table 54. The lifting rod 62 is slidably installed on the surface of the workbench 1. The triangular block 63 is fixedly installed on the surface of the lifting rod 62. A chute one is opened on the surface of the workbench 1. The baffle 64 is slidably installed inside the chute one. The limiting rod 65 slidably penetrates the left and right walls of the baffle 64. A torsion spring three is arranged between the baffle 64 and the inner wall of the chute one. One end of the limiting rod 65 close to the triangular block 63 is provided with an inclined plane two. A torsion spring four is arranged between the limiting rod 65 and the baffle 64. After the limiting rod 65 moves and resets, it limits the triangular block 63, effectively avoiding the rebound of the receiving table 54 after hot pressing and squeezing the circuit board, thereby causing secondary damage to the circuit board and reducing the subsequent maintenance cost.

[0033] A receiving rod 66 slidably penetrates the surface of the baffle 64. The surface of the L-shaped rod 56 is fixedly installed with a pressing block 67. The surface of the receiving rod 66 is provided with an inclined plane three. The upper part of the pressing block 67 is provided with an inclined plane four. The movement of the receiving rod 66 drives the movement of the baffle 64. The movement of the baffle 64 drives the movement of the limiting rod 65 and contacts to limit the triangular block 63, so that the receiving table 54 resets to avoid affecting the hot pressing of subsequent circuit boards.

[0034] During the operation of this embodiment, the servo motor 3 and the hot pressing plate 53 are started. The output end of the servo motor 3 moves downward to drive the pressure rod 51 to move downward. The downward movement of the pressure rod 51 drives the fixed frame 52 to move downward. The downward movement of the fixed frame 52 drives the hot pressing plate 53 to move downward. The hot pressing plate 53 moves downward to contact the circuit board and flatten it. When the circuit board is warped, the two ends of the warped circuit board will contact and drive the rubber strip 55 to move during the flattening process. The movement of the rubber strip 55 drives the receiving table 54 to move, which can effectively prevent the warped circuit board from directly contacting and rubbing against the receiving table 54 and causing wear, improve the flattening effect of the warped circuit board, avoid further wear and reduce the service life of the circuit board. At the same time, the downward movement of the fixed frame 52 drives the L-shaped rod 56 to move downward. The downward movement of the L-shaped rod 56 contacts and drives the moving plate 57 to move. The movement of the moving plate 57 drives the conduction rod 58 to move. The movement of the conduction rod 58 drives the push plate 59 to move. The push plate 59 moves to contact and push the circuit board to directly below the hot pressing plate 53, avoiding the incorrect placement position of the circuit board and thus affecting the hot pressing effect on the circuit board.

[0035] The movement of the receiving table 54 drives the inclined rod 61 to move. The movement of the inclined rod 61 drives the lifting rod 62 to move upward. The upward movement of the lifting rod 62 drives the triangular block 63 to move upward. The upward movement of the triangular block 63 contacts and squeezes the limiting rod 65 to move. After the limiting rod 65 moves, it resets to limit the triangular block 63, which can effectively prevent the receiving table 54 from rebounding and squeezing the circuit board after the hot pressing is completed, thereby causing secondary damage to the circuit board and reducing the subsequent maintenance cost. When the L-shaped rod 56 moves downward, it drives the pressing block 67 to move downward. The downward movement of the pressing block 67 contacts and squeezes the receiving rod 66 to move. The movement of the receiving rod 66 drives the baffle 64 to move. The movement of the baffle 64 drives the limiting rod 65 to move and contact the limit of the triangular block 63, causing the receiving table 54 to reset and avoid affecting the subsequent hot pressing of the circuit board.

[0036] Please refer to Figures 1-9, on the basis of the above embodiments, in another embodiment of the present invention, it further includes a preheating device and a lubricating device. The preheating device includes a preheating frame 71, a horizontal pipe 72, a connecting pipe 73, a vertical pipe 74, a diversion frame 75, a limiting plate 76 and a pull rod 77. The upward movement of the lifting rod 62 drives the upward movement of the pull rod 77, and the upward movement of the pull rod 77 drives the upward movement of the limiting plate 76. The preheating frame 71 is fixedly installed below the receiving table 54. The horizontal pipe 72 fixedly penetrates the inner and outer walls of the fixed frame 52. The connecting pipe 73 is slidably installed inside the horizontal pipe 72. The vertical pipe 74 is slidably installed at one end of the connecting pipe 73 away from the horizontal pipe 72. A second chute is formed on the surface of the receiving table 54. The diversion frame 75 is fixedly installed inside the second chute. The limiting plate 76 is slidably installed on the surface of the diversion frame 75. The pull rod 77 is fixedly installed on the surface of the lifting rod 62. One end of the pull rod 77 away from the lifting rod 62 is fixedly connected to the limiting plate 76. One end of the vertical pipe 74 away from the connecting pipe 73 fixedly penetrates the upper inner and outer walls of the diversion frame 75. The preheating frame 71 is communicated with the diversion frame 75 through an air pipe. An air hole one is formed on the surface of the diversion frame 75. The upward movement of the limiting plate 76 contacts and limits the air hole one on the surface of the diversion frame 75, so that hot air is discharged through the air hole one to preheat the upper part of the circuit board, avoiding the direct contact between the circuit board and the hot pressing plate 53, which may cause too fast temperature rise and affect the hot pressing effect, and improving the leveling effect of the circuit board.

[0037] Air holes two are formed on the surface of the storage table 4, air holes three are formed on the surface of the preheating frame 71, and air holes four are formed on the surface of the receiving table 54. A fifth clockwork spring is arranged between the limiting plate 76 and the diversion frame 75. The hot air inside the diversion frame 75 enters the inside of the preheating frame 71 through the air pipe, and passes through the air holes three on the surface of the preheating frame 71 to penetrate the surfaces of the storage table 4 and the receiving table 54 to preheat the lower part of the circuit board, making the preheating of the circuit board more uniform, improving the preheating effect, and further increasing the leveling effect.

[0038] The lubrication device includes an oil storage tank 81, a dosing box 82, an extrusion plate 83, a push rod 84 and a push block 85. The pressing block 67 moves upward to contact and squeeze the receiving rod 66 to move. The movement of the receiving rod 66 drives the push block 85 to move. The movement of the push block 85 contacts and squeezes the push rod 84 to move. A third chute is provided on the surface of the workbench 1, and the oil storage tank 81 is slidably installed inside the third chute. The dosing box 82 is fixedly installed inside the oil storage tank 81. The extrusion plate 83 is slidably installed inside the dosing box 82. The push rod 84 is fixedly installed on the surface of the extrusion plate 83. The push block 85 is fixedly installed on the surface of the limiting rod 65. An oil inlet is provided on the surface of the dosing box 82. The push rod 84 slidably penetrates the inner and outer walls of the oil storage tank 81. A nozzle is fixedly penetrated on the surface of the dosing box 82. The movement of the push rod 84 drives the extrusion plate 83 to move. The movement of the extrusion plate 83 closes the oil inlet on the surface of the dosing box 82 and squeezes the lubricating oil inside it, so that the lubricating oil is discharged through the nozzle to lubricate the connection between the baffle 64 and the limiting rod 65, improving the limiting effect and avoiding waste caused by excessive discharge of lubricating oil.

[0039] An L-shaped plate 86 is fixedly installed on the surface of the workbench 1. A pressure valve is provided inside the nozzle. Pushing the oil storage tank 81 to move so that it disengages from contact with the L-shaped plate 86. The movement of the oil storage tank 81 drives the push rod 84 to move and get out of the movement track of the push block 85, which can effectively reduce the subsequent maintenance cost.

[0040] When this embodiment works, the hot air inside the fixed frame 52 enters the inside of the connecting pipe 73 through the horizontal pipe 72, enters the inside of the vertical pipe 74 from the inside of the connecting pipe 73, and then enters the inside of the diversion frame 75 from the inside of the vertical pipe 74. At the same time, the lifting rod 62 moves upward to drive the pull rod 77 to move upward. The upward movement of the pull rod 77 drives the limiting plate 76 to move upward. The upward movement of the limiting plate 76 contacts and limits the air hole 1 on the surface of the diversion frame 75, so that the hot air is discharged through the air hole 1 to preheat the upper part of the circuit board, avoiding the circuit board directly contacting the hot pressing plate 53, which may cause too fast temperature rise and affect the hot pressing effect, improving the leveling effect of the circuit board. At the same time, the hot air inside the diversion frame 75 enters the inside of the preheating frame 71 through the air pipe, and passes through the air hole 3 on the surface of the preheating frame 71 to penetrate the surfaces of the placing table 4 and the receiving table 54 to preheat the lower part of the circuit board, making the preheating of the circuit board more uniform, improving the preheating effect, and further increasing the leveling effect.

[0041] The pressure block 67 moves upward to contact and squeeze the receiving rod 66 to move, the receiving rod 66 moves and drives the push block 85 to move, the push block 85 moves and contacts and squeezes the push rod 84 to move, the push rod 84 moves and drives the extrusion plate 83 to move, the extrusion plate 83 moves to close the oil inlet on the surface of the limit box 82 and squeeze the lubricating oil inside it, so that the lubricating oil is discharged through the nozzle to lubricate the connection between the baffle 64 and the limit rod 65, thereby improving the limiting effect and avoiding excessive lubricating oil being discharged and causing waste. When maintenance is not needed, the oil storage tank 81 is pushed to move to break away from the contact with the L-shaped plate 86. The movement of the oil storage tank 81 drives the push rod 84 to move and break away from the movement trajectory of the push block 85, which can effectively reduce the subsequent maintenance cost.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for improving the warping of a circuit board, comprising a workbench (1), characterized in that: It also includes a hot pressing device, a limiting device, a preheating device and a lubricating device; Wherein, a mounting plate (2) is fixedly mounted on the surface of the workbench (1), a servo motor (3) is fixedly mounted above the mounting plate (2), and a storage table (4) is fixedly mounted above the workbench (1); The hot pressing device comprises a pressure rod (51), a fixing frame (52), a hot pressing plate (53), a receiving platform (54) and a rubber strip (55); the pressure rod (51) is fixedly mounted on the output end of the servo motor (3); the fixing frame (52) is fixedly mounted below the pressure rod (51); the hot pressing plate (53) is fixedly mounted on the surface of the fixing frame (52); the receiving platform (54) is slidably mounted above the workbench (1); the rubber strip (55) is fixedly mounted above the receiving platform (54); and a clockwork spring (1) is provided between the receiving platform (54) and the workbench (1); An L-shaped rod (56) is fixedly mounted on the surface of the fixed frame (52); a movable plate (57) is slidably mounted above the workbench (1); a conductive rod (58) is fixedly mounted on the surface of the movable plate (57); a push plate (59) is fixedly mounted on one end of the conductive rod (58) away from the movable plate (57); a first beveled surface is formed above the movable plate (57); and a second spring is arranged between the movable plate (57) and the workbench (1); The limiting device comprises an inclined rod (61), a lifting rod (62), a triangular block (63), a baffle (64) and a limiting rod (65); the inclined rod (61) is hinged on the surface of the receiving platform (54); the lifting rod (62) is slidably mounted on the surface of the workbench (1); the triangular block (63) is fixedly mounted on the surface of the lifting rod (62); a slide groove 1 is provided on the surface of the workbench (1); the baffle (64) is slidably mounted inside the slide groove 1; the limiting rod (65) slides through the left and right walls of the baffle (64); a spring 3 is provided between the baffle (64) and the inner wall of the slide groove 1; an end of the limiting rod (65) close to the triangular block (63) is provided with a beveled surface 2; and a spring 4 is provided between the limiting rod (65) and the baffle (64); A receiving rod (66) is slidably penetrated through the surface of the baffle (64), a pressing block (67) is fixedly mounted on the surface of the L-shaped rod (56), the surface of the receiving rod (66) is provided with a third beveled surface, and the upper portion of the pressing block (67) is provided with a fourth beveled surface; The preheating device comprises a preheating frame (71), a transverse tube (72), a connecting tube (73), a vertical tube (74), a guide frame (75), a limit plate (76) and a pull rod (77); the preheating frame (71) is fixedly mounted below the receiving platform (54); the transverse tube (72) is fixedly penetrated through the inner and outer walls of the fixed frame (52); the connecting tube (73) is slidably mounted inside the transverse tube (72); the vertical tube (74) is slidably mounted at one end of the connecting tube (73) away from the transverse tube (72); and a slide groove 2 is provided on the surface of the receiving platform (54). The guide frame (75) is fixedly mounted inside the second slide groove, the limit plate (76) is slidably mounted on the surface of the guide frame (75), the pull rod (77) is fixedly mounted on the surface of the lifting rod (62), one end of the pull rod (77) away from the lifting rod (62) is fixedly connected to the limit plate (76), one end of the vertical pipe (74) away from the connecting pipe (73) is fixedly penetrated through the upper inner and outer walls of the guide frame (75), the preheating frame (71) and the guide frame (75) are connected via an air pipe, and an air hole 1 is opened on the surface of the guide frame (75); The lubricating device comprises an oil storage tank (81), a limit box (82), an extrusion plate (83), a push rod (84) and a push block (85); a slide groove three is provided on the surface of the workbench (1); the oil storage tank (81) is slidably mounted inside the slide groove three; the limit box (82) is fixedly mounted inside the oil storage tank (81); the extrusion plate (83) is slidably mounted inside the limit box (82); the push rod (84) is fixedly mounted on the surface of the extrusion plate (83); the push block (85) is fixedly mounted on the surface of the limit rod (65); an oil inlet is provided on the surface of the limit box (82); the push rod (84) slides through the inner and outer walls of the oil storage tank (81); and a nozzle is fixedly mounted on the surface of the limit box (82).

2. The device for improving the warping of a circuit board according to claim 1, characterized in that: The surface of the storage table (4) is provided with air hole two, the surface of the preheating frame (71) is provided with air hole three, the surface of the receiving table (54) is provided with air hole four, and a clockwork spring five is provided between the limit plate (76) and the guide frame (75).

3. The device for improving the warping of a circuit board according to claim 1, characterized in that: An L-shaped plate (86) is fixedly mounted on the surface of the workbench (1), and a pressure valve is arranged inside the spray head.

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