Device for improving warping of circuit board

Abstract

The invention discloses a device for improving warping of a circuit board, and relates to the technical field of circuit boards. The device for improving the warping of the circuit board comprises a workbench and a hot pressing device, wherein a mounting plate is fixedly mounted on the surface of the working table, a servo motor is fixedly mounted above the mounting plate, and a storage table is fixedly mounted above the working table; wherein the hot pressing device comprises a pressing rod, a fixing frame, a hot pressing plate, a bearing table and a rubber strip, the pressing rod is fixedly installed at the output end of the servo motor, the fixing frame is fixedly installed below the pressing rod, the hot pressing plate is fixedly installed on the surface of the fixing frame, the bearing table is slidably installed above the workbench, and the rubber strip is fixedly installed on the bearing table. The device for improving the warping of the circuit board can effectively prevent the warping circuit board from being in direct contact friction with the bearing table and causing abrasion, improves the leveling effect of the warping circuit board, and avoids further abrasion and reduction of the service life of the circuit board.

Description

Technical Field

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

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

[0003] The patent with patent announcement number CN216531915U relates to a double-sided multi-layer structural 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. The upper circuit board and the first circuit board, the second circuit board and the lower circuit board are provided with mounting holes at four corners, and the upper circuit board and the first circuit board, the second circuit board and the lower circuit board are provided with card slots in the middle, and a number of vias are provided between the two connector mounting slots and the card slots. The double-sided multi-layer structural circuit board of the patent is provided with a connecting layer, an upper protective film and a lower protective film. Through the connecting layer, the multi-layer circuit board can be tightly connected by hot pressing. At the same time, the curing layer and the insulating layer in the connecting layer can prevent the structural warping of the circuit board, improve the practicality of the device, and the upper protective film and the lower protective film are used to facilitate the protection of the top and bottom surfaces of the circuit board, thereby strengthening the protection of the circuit board body during the transportation process.

[0004] In the above patent, the upper protective film and the lower protective film are used to protect the top and bottom surfaces of the circuit board, thereby enhancing the protective effect on the transportation process of the completed circuit board body. However, in the actual process of hot pressing the circuit board, the warped circuit board will cause wear due to contact and friction with the storage table during the straightening process, thereby reducing the quality of the circuit board and affecting its service life. For this reason, a device for improving the warping of the circuit board is designed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a device for improving the warping of a circuit board, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a device for improving the warping of a circuit board, comprising a workbench, a hot pressing device and a limiting device; wherein a mounting plate is fixedly installed on the surface of the workbench, a servo motor is fixedly installed above the mounting plate, and a storage table is fixedly installed above the workbench; wherein the hot pressing device comprises a pressure rod, a fixed frame, a hot pressing plate, a receiving platform and a rubber strip, the output end of the servo motor moves downward to drive the pressure rod to move downward, the pressure rod moves downward to drive the fixed frame to move downward, the fixed frame moves downward to drive the hot pressing plate to move downward, and the pressure rod is fixed to the fixed frame. The fixing frame is fixedly installed on the output end of the servo motor, the fixing frame is fixedly installed under the pressure rod, the hot pressing plate is fixedly installed on the surface of the fixing frame, the receiving platform is slidably installed above the workbench, the rubber strip is fixedly installed above the receiving platform, and a clockwork spring is arranged between the receiving platform and the workbench. The two ends of the warped circuit board will contact and drive the rubber strip to move during the leveling process, and the movement of the rubber strip drives the receiving platform to move, which can effectively prevent the warped circuit board from directly contacting, rubbing and wearing with the receiving platform, thereby improving the leveling effect of the warped circuit board, avoiding further wear and reducing 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 movable plate is slidably installed above the workbench, a conduction rod is fixedly installed on the surface of the movable plate, a push plate is fixedly installed on the end of the conduction rod away from the movable plate, and a beveled surface 1 is opened above the movable plate, and a clockwork spring 2 is arranged between the movable 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 the bottom of the hot pressing plate to avoid the circuit board being placed in the wrong position and thus affecting the hot pressing effect on the circuit board.

[0008] The cam is hinged on the surface of the supporting platform, and the lifting rod is slidably mounted on the surface of the working platform, and the triangular block is fixedly mounted on the surface of the lifting rod. The surface of the working platform is provided with a slide groove 1, and the baffle plate is slidably mounted on the inside of the slide groove 1. The limit rod slides through the left and right walls of the baffle plate, and a spring spring 3 is arranged between the baffle plate and the inner wall of the slide groove 1. An end of the limit rod close to the triangular block is provided with a chamfered surface 2, and a spring spring 4 is arranged between the limit rod and the baffle. After the limit rod moves, it resets to limit the triangular block, which can effectively prevent the supporting platform from rebounding after the hot pressing to cause extrusion of the circuit board, thereby causing secondary damage to the circuit board, thereby reducing subsequent maintenance costs.

[0009] According to the above technical solution, a receiving rod is slidably penetrated through the surface of the baffle, a pressure block is fixedly installed on the surface of the L-shaped rod, the surface of the receiving rod is provided with a beveled surface three, and the upper part of the pressure block is provided with a beveled surface four. The movement of the receiving rod drives the movement of the baffle, and the movement of the baffle drives the limit rod to move and contact the limit of the triangular block, so that the receiving platform is reset to avoid affecting the subsequent hot pressing of the circuit board.

[0010] According to the above technical scheme, it also includes a preheating device and a lubricating device, the preheating device includes a preheating frame, a transverse tube, a connecting tube, a vertical tube, a guide frame, a limit plate and a pull rod, the lifting rod moves upward to drive the pull rod to move upward, and the pull rod moves upward to drive the limit plate to move upward, the preheating frame is fixedly installed under the receiving platform, the transverse tube is fixedly passed through the inner and outer walls of the fixed frame, the connecting tube is slidably installed inside the transverse tube, the vertical tube is slidably installed at the end of the connecting tube away from the transverse tube, the surface of the receiving platform is provided with a second slide groove, the guide frame is fixedly installed inside the second slide groove, the limit The plate is slidably installed on the surface of the guide frame, the pull rod is fixedly installed on the surface of the lifting rod, the end of the pull rod away from the lifting rod is fixedly connected to the limit plate, the end of the vertical pipe away from the connecting pipe is fixedly passed through the upper inner and outer walls of the guide frame, the preheating frame and the guide frame are connected through an air pipe, and an air hole 1 is opened on the surface of the guide frame. The limit plate moves upward to contact the air hole 1 on the surface of the guide frame to limit the position, so that hot air is discharged through the air hole 1 to preheat the top of the circuit board, avoiding direct contact between the circuit board and the hot pressing plate, resulting in excessive temperature rise and affecting the effect of hot pressing, thereby improving the leveling effect of the circuit board.

[0011] According to the above technical solution, air hole 2 is opened on the surface of the storage table, air hole 3 is opened on the surface of the preheating frame, air hole 4 is opened on the surface of the receiving table, and a clockwork spring 5 is arranged between the limit plate and the guide frame. The hot air inside the guide frame enters the interior of the preheating frame through the air pipe, and passes through the surfaces of the storage table and the receiving table through air hole 3 on the surface of the preheating frame to preheat the bottom of the circuit board, so that the preheating of the circuit board is more uniform, the preheating effect is improved, and the leveling effect is further increased.

[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: (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.

[0015] (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.

[0016] (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.

[0017] (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

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the position structure of the fixing frame and the hot pressing plate of the present invention; Figure 3 This is a schematic diagram of the position structure of the push plate and the movable plate of the present invention; Figure 4 For the present invention Figure 3 The enlarged structural diagram of part A in the middle; Figure 5 This is a schematic diagram of the position structure of the L-shaped rod and the baffle of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram of part B in the middle; Figure 7 It is a schematic diagram of the position structure of the receiving platform and the guide frame of the present invention; Figure 8 This is a schematic diagram of the position structure of the oil storage tank and the limit box of the present invention; Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged structure of part C in the middle.

[0019] In the figure: 1. workbench; 2. mounting plate; 3. servo motor; 4. storage table; 51. pressure 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. push plate; 61. oblique rod; 62. lifting rod; 63. triangular block; 64. baffle; 65. limit rod; 66. receiving rod; 67. pressure block; 71. preheating frame; 72. horizontal pipe; 73. connecting pipe; 74. vertical pipe; 75. guide frame; 76. limit plate; 77. pull rod; 81. oil storage tank; 82. limit box; 83. extrusion plate; 84. push rod; 85. push block; 86. L-shaped plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-6 One embodiment of the present invention is: a device for improving the warping of a circuit board, comprising a workbench 1, a hot pressing device and a limiting 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; wherein the hot pressing device comprises a pressing rod 51, a fixing frame 52, a hot pressing plate 53, a receiving platform 54 and a rubber strip 55, wherein 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 fixing frame 52 to move downward, the fixing frame 52 moves downward to drive the hot pressing plate 53 to move downward, the pressing rod 51 is fixedly mounted on the servo motor 3, and the hot pressing plate 53 moves downward. At the output end of the servo motor 3, the fixed frame 52 is fixedly installed below the pressure rod 51, the hot pressing plate 53 is fixedly installed on the surface of the fixed frame 52, the receiving platform 54 is slidably installed above the workbench 1, and the rubber strip 55 is fixedly installed above the receiving platform 54. A spring 1 is arranged between the receiving platform 54 and the workbench 1. The two ends of the warped circuit board will contact and drive the rubber strip 55 to move during the leveling process. The movement of the rubber strip 55 drives the receiving platform 54 to move, which can effectively prevent the warped circuit board from directly contacting, rubbing and wearing with the receiving platform 54, thereby improving the leveling effect of the warped circuit board, avoiding further wear and reducing the service life of the circuit board.

[0022] An L-shaped rod 56 is fixedly installed on the surface of the fixed frame 52, and a movable plate 57 is slidably installed above the workbench 1. A conduction rod 58 is fixedly installed on the surface of the movable plate 57, and a push plate 59 is fixedly installed on the end of the conduction rod 58 away from the movable plate 57. The top of the movable plate 57 is provided with an oblique section 1, and a clockwork spring 2 is arranged between the movable plate 57 and the workbench 1. The movement of the conduction rod 58 drives the push plate 59 to move, and the push plate 59 moves to contact and push the circuit board to the bottom of the hot pressing plate 53 to avoid the circuit board being placed in the wrong position and thus affecting the hot pressing effect of the circuit board.

[0023] 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 receiving platform 54 moves to drive the inclined rod 61 to move, the inclined rod 61 moves to drive the lifting rod 62 to move upward, and the lifting rod 62 moves upward to drive the triangular block 63 to move upward. The inclined rod 61 is hinged on the surface of the receiving platform 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, the surface of the workbench 1 is provided with a slide groove 1, and the baffle 64 is slidably installed Inside the slide groove one, the limit rod 65 slides through the left and right walls of the baffle 64, a spring three is arranged between the baffle 64 and the inner wall of the slide groove one, and the end of the limit rod 65 close to the triangular block 63 is provided with a beveled surface 2, and a spring four is arranged between the limit rod 65 and the baffle 64. After the limit rod 65 moves, it resets to limit the triangular block 63, which can effectively prevent the receiving platform 54 from rebounding after the hot pressing and causing squeezing of the circuit board, thereby causing secondary damage to the circuit board, thereby reducing the subsequent maintenance cost.

[0024] A receiving rod 66 is slidably penetrated on the surface of the baffle 64, a pressure block 67 is fixedly installed on the surface of the L-shaped rod 56, the surface of the receiving rod 66 is provided with a beveled surface three, and the upper part of the pressure block 67 is provided with a beveled surface four. The movement of the receiving rod 66 drives the movement of the baffle 64, and the movement of the baffle 64 drives the limit rod 65 to move and contact the limit of the triangular block 63, so that the receiving platform 54 is reset to avoid affecting the subsequent hot pressing of the circuit board.

[0025] When the present embodiment is working, 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 pressure rod 51 moves downward to drive the fixing frame 52 to move downward, the fixing frame 52 moves downward to drive the hot pressing plate 53 to move downward, the hot pressing plate 53 moves downward to contact the circuit board and level 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 leveling process, the movement of the rubber strip 55 drives the receiving platform 54 to move, which can effectively prevent the warped circuit board from directly contacting the circuit board. The receiving platform 54 contacts, rubs and produces wear, which improves the effect of leveling the warped circuit board and avoids further wear and reduces the service life of the circuit board. At the same time, the fixed frame 52 moves downward to drive the L-shaped rod 56 to move downward. The L-shaped rod 56 moves downward to contact and drive the movable plate 57 to move. The movement of the movable 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 the bottom of the hot pressing plate 53 to avoid the circuit board being placed in the wrong position and thus affecting the hot pressing effect of the circuit board.

[0026] The movement of the receiving platform 54 drives the inclined rod 61 to move, and the movement of the inclined rod 61 drives the lifting rod 62 to move upward. The lifting rod 62 moves upward and drives the triangular block 63 to move upward. The triangular block 63 moves upward to contact and squeeze the limit rod 65 to move. After the limit rod 65 moves, it resets to limit the triangular block 63, which can effectively prevent the receiving platform 54 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 L-shaped rod 56 moves downward, it will drive the pressure block 67 to move downward, and the pressure block 67 moves downward to contact and squeeze 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 limit rod 65 to move and contact the limit of the triangular block 63, so that the receiving platform 54 is reset to avoid affecting the subsequent hot pressing of the circuit board.

[0027] See also Figure 1-9On the basis of the above embodiment, another embodiment of the present invention further includes a preheating device and a lubricating device. The preheating device includes 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 lifting rod 62 moves upward to drive the pull rod 77 to move upward, and the pull rod 77 moves upward to drive the limit plate 76 to move upward. The preheating frame 71 is fixedly installed under 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 installed inside the transverse tube 72. The vertical tube 74 is slidably installed at one end of the connecting tube 73 away from the transverse tube 72. A slide groove 2 is provided on the surface of the receiving platform 54. The guide frame 75 is fixedly installed The first and second ends of the drawbars 76 are provided with a plurality of stoppers 76, each of which is provided with a plurality of stoppers 77. The stoppers 76 are provided with a plurality of stoppers 78, each of which is provided with a plurality of stoppers 79. The stoppers 79 are provided with a plurality of stoppers 71. The stoppers 79 are provided with a plurality of stoppers 79.

[0028] A second air hole is provided on the surface of the storage table 4, a third air hole is provided on the surface of the preheating frame 71, a fourth air hole is provided on the surface of the receiving table 54, and a fifth spring is provided between the limit plate 76 and the guide frame 75. The hot air inside the guide frame 75 enters the interior of the preheating frame 71 through the air pipe, and passes through the third air hole on the surface of the preheating frame 71 to pass through the surfaces of the storage table 4 and the receiving table 54 to preheat the bottom of the circuit board, so that the preheating of the circuit board is more uniform, the preheating effect is improved, and the leveling effect is further increased.

[0029] The lubrication device includes an oil storage tank 81, a limit box 82, an extrusion plate 83, a push rod 84 and a push block 85. The pressure block 67 moves upward to contact and squeeze the receiving rod 66 to move. The receiving rod 66 moves to drive the push block 85 to move. The push block 85 moves to contact and squeeze the push rod 84 to move. A slide groove 3 is opened on the surface of the workbench 1. The oil storage tank 81 is slidably installed in the slide groove 3. The limit box 82 is fixedly installed in the oil storage tank 81. The extrusion plate 83 is slidably installed in the limit box 82. The push rod 84 is fixedly installed on the extrusion plate 83. The push block 85 is fixedly installed on the surface of the limit rod 65, an oil inlet is opened 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 penetrated on the surface of the limit box 82. The movement of the push rod 84 drives the extrusion plate 83 to move, and 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 while avoiding excessive lubricating oil being discharged and causing waste.

[0030] An L-shaped plate 86 is fixedly installed on the surface of the workbench 1, and a pressure valve is arranged inside the nozzle to push the oil storage tank 81 to move so that it is out of contact with the L-shaped plate 86. The movement of the oil storage tank 81 drives the push rod 84 to move and out of the motion track of the push block 85, which can effectively reduce the subsequent maintenance cost.

[0031] When the present embodiment is working, the hot air inside the fixed frame 52 enters the interior of the connecting tube 73 through the horizontal tube 72, and enters the interior of the vertical tube 74 from the interior of the connecting tube 73, and then enters the interior of the guide frame 75 from the interior of the vertical tube 74. At the same time, the lifting rod 62 moves upward to drive the pull rod 77 to move upward, and the pull rod 77 moves upward to drive the limit plate 76 to move upward. The limit plate 76 moves upward to contact the limit of the air hole 1 on the surface of the guide frame 75, so that the hot air is discharged through the air hole 1 to preheat the upper part of the circuit board, so as to avoid the circuit board directly contacting the hot pressing plate 53, resulting in excessive temperature rise and affecting 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 75 enters the interior 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 pass through the surface of the storage table 4 and the receiving table 54 to preheat the lower part of the circuit board, so that the preheating of the circuit board is more uniform, the preheating effect is improved, and the leveling effect is further increased.

[0032] 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.

[0033] 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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