A manufacturing method for a circuit board used in an automobile safety control system

Abstract

The present invention discloses a method for manufacturing a circuit board for an automobile safety control system, which relates to the technical field of circuit board manufacturing. The method is implemented by manufacturing equipment for the circuit board, which includes a hot press frame assembly; the hot press frame assembly includes a base, a workbench, a lifting plate, a top plate, columns, a lower hot press plate, and an upper hot press plate; the base, workbench, lifting plate, and top plate are arranged in sequence from bottom to top, and four columns are provided, each of which passes through the four corners of the lifting plate and the workbench. The present invention has a high degree of automation and can automatically achieve multi-directional positioning of overlapping plates. In addition, after hot pressing is completed, the positioning can be automatically released without manual operation, thereby improving the plate qualification rate while reducing the difficulty of operation, making it more suitable for industrial production.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board manufacturing, and in particular to a manufacturing method of a circuit board used in an automobile safety control system. Background Art

[0002] Flexible circuit boards, also known as flexible printed circuit boards or flexible printed circuit boards, are printed circuits made of flexible insulating substrates. They can meet the design needs of smaller and higher-density installations, and also help reduce assembly processes and enhance reliability, thereby providing a stable foundation for the normal operation of automotive safety control systems.

[0003] The invention patent with authorization announcement number CN113038696B discloses a high-bend-resistant circuit board for automobiles and its preparation method. The circuit board includes a rigid bend-resistant plate arranged in the middle, and the upper and lower outer surfaces of the rigid bend-resistant plate are attached with flexible semi-cured sheets, and the upper and lower outer surfaces of the flexible semi-cured sheets are attached with honeycomb heat dissipation sheets; the upper and lower outer surfaces of the honeycomb heat dissipation sheets are provided with flexible copper wire boards, and the outer surface of the flexible copper wire boards is provided with a protective film layer. The rigid bend-resistant plate is divided into several square bend-resistant plates, and buffer grooves are provided between the square bend-resistant plates, and elastic connecting ribs are provided inside the buffer grooves.

[0004] When preparing multilayer boards using the above-mentioned preparation method, it is necessary to stack a rigid bend-resistant board with elastic connecting ribs, two flexible semi-cured sheets, two honeycomb heat dissipation sheets, and two copper wire boards, and then hot-press them into shape using a hot press. However, in the actual preparation process, due to the large number of overlapping boards, it is very easy for the middle part of the board to slip due to pressure during the hot pressing process. At this time, the edges of the finished multilayer boards will be uneven, resulting in a lower qualified rate of the finished products and increased production costs.

[0005] In response to the above situation, technical personnel in this field have thought of setting up a positioning mechanism to position the plates after stacking, so as to prevent the plates from shifting during the hot pressing process. However, the setting of the positioning mechanism requires manual positioning and release of the plates after stacking and hot pressing, which increases the complexity of the operation and is inconvenient in actual use.

[0006] Therefore, it is necessary to invent a manufacturing method for a circuit board used in an automobile safety control system to solve the above problems. Summary of the Invention

[0007] The object of the present invention is to provide a method for manufacturing a circuit board for an automobile safety control system to solve the problems raised in the above background technology.

[0008] To achieve the above objectives, the present invention provides the following technical solutions: a method for manufacturing a circuit board for an automobile safety control system, wherein the method is implemented by a manufacturing device for a circuit board for an automobile safety control system, wherein the manufacturing device comprises a hot press frame assembly;

[0009] The hot pressing frame assembly includes a base, a workbench, a lifting plate, a top plate, a column, a lower hot pressing plate and an upper hot pressing plate;

[0010] The base, workbench, lifting plate and top plate are arranged in sequence from bottom to top, and there are four columns, which respectively pass through the four corners of the lifting plate and the workbench. The workbench is fixedly connected to the columns, and the lifting plate is slidably connected to the columns. The base is fixedly set at the bottom ends of the four columns, and the top plate is fixedly set at the top ends of the four columns. The lower hot pressing plate is located at the center of the top of the workbench, and the upper hot pressing plate is fixedly set at the center of the bottom of the lifting plate;

[0011] A lifting mechanism is fixedly provided at the center of the top of the base, trigger-type lateral positioning mechanisms are provided on both sides of the top of the workbench, front and rear positioning mechanisms are provided inside the lifting plate and at the bottom of the lifting plate, and a driving mechanism is provided on the top and bottom of the top plate;

[0012] The lifting mechanism includes a limiting seat, a rotating plate, a back plate, a lifting plate and a lifting rod;

[0013] The limit seat is fixedly arranged on the top of the base, and there are two rotating plates, back plates and lifting rods. The two rotating plates are respectively fitted on both sides of the top of the limit seat, and the two back plates are respectively fixed on the front and back of the limit seat. The rotating plate is rotated between the two back plates through a pin shaft, and the lifting plate is fitted on the top of the two rotating plates. The two lifting rods are respectively fixed on both sides of the top of the lifting plate, and both slide through the bottom of the workbench and extend to the top of the workbench and are fixedly connected to the lower hot pressing plate.

[0014] Preferably, the trigger-type lateral positioning mechanism includes a transverse sliding groove, a first positioning plate, a first spring, a trigger plate, a trigger groove, an avoidance channel and a trigger rod.

[0015] Preferably, the transverse slide groove is opened on the top side of the workbench, the first positioning plate is slidably arranged on the inner side of the transverse slide groove, the first spring is fixedly connected to the bottom of the side of the first positioning plate and is fixedly connected to the inner wall of the transverse slide groove, the trigger plate is slidably arranged on the top of the workbench, the trigger groove is opened on the top of the trigger plate, the avoidance channel is opened through the workbench, and the trigger rod is fixedly arranged at the bottom of the lifting plate.

[0016] Preferably, the front and rear positioning mechanism includes a cavity, a connecting slide, a second positioning plate, a second spring and an outer blocking plate.

[0017] Preferably, the cavity is opened inside the lifting plate, and two of the connecting slides, second positioning plates, second springs and outer blocking plates are each provided. The two connecting slides are respectively opened on both sides of the bottom of the lifting plate and are both connected to the cavity. The two second positioning plates are respectively slidably arranged on the inner sides of the two connecting slides and extend into the interior of the cavity. The two second springs are respectively fixedly connected to the outer tops of the two second positioning plates and are both fixedly connected to the inner wall of the cavity. The two outer blocking plates are respectively fixedly arranged on the inner sides of the two second positioning plates and are both slidably connected to the inner wall of the cavity.

[0018] Preferably, the driving mechanism includes a driving motor, a driving screw, a threaded sleeve, a guide plate, a guide rod, a third spring and an inner blocking plate.

[0019] Preferably, the driving motor is fixedly arranged on the top of the top plate, the driving screw is rotatably nested at the bottom of the top plate through a bearing, and is transmission-connected to the driving motor, the threaded sleeve is sleeved on the outside of the driving screw and is threadedly connected to the driving screw, the lifting plate is fixedly sleeved on the bottom outside of the threaded sleeve, the guide plate is fixedly sleeved on the outside of the threaded sleeve, two guide rods are respectively slid through on both sides of the top of the guide plate, and are fixedly connected to the top plate, the third spring is rotatably connected to the bottom end of the driving screw through a bearing, the inner blocking plate is fixedly connected to the bottom end of the third spring, and is slidably arranged inside the cavity along the vertical direction.

[0020] Preferably, the method specifically comprises the following steps:

[0021] S1. Take a rigid bending-resistant plate with elastic connecting ribs, two flexible prepregs, two honeycomb heat dissipation sheets, and two copper wire plates, stack them in sequence, and place them on top of the lower hot press plate, then start the drive motor.

[0022] S2. After the drive motor is started, it drives the drive screw to rotate. When the drive screw rotates, it drives the threaded sleeve limited by the guide plate and the guide rod to descend. When the threaded sleeve descends, it drives the lifting plate to descend synchronously. When the lifting plate descends, it pushes the inner wall of the trigger groove through the trigger rod, thereby causing the trigger plate to push the first positioning plate inward. At this time, the first positioning plate slides inward along the horizontal sliding groove;

[0023] S3. When the lifting plate has descended a distance that reaches a first threshold, the two first positioning plates push the plate from both sides, thereby aligning the plate on the left and right sides. Furthermore, during the descent of the lifting plate, the compressed third spring gradually returns to its original position as the lifting plate descends.

[0024] S4. When the lifting plate has descended a distance that reaches the second threshold, the fully reset third spring drives the inner blocking plate to rise, thereby releasing the inner blocking plate from limiting the outer blocking plate. At this time, the second positioning plate, pushed by the second spring, slides along the connecting slide toward the upper hot pressing plate, thereby pushing the plates in the front and rear directions to align the plates in the front and rear directions.

[0025] S5. When the lifting plate has descended a distance that reaches a third threshold, the upper hot pressing plate contacts the uppermost plate. At this time, power is supplied to the lower hot pressing plate and the upper hot pressing plate, and the lower hot pressing plate and the upper hot pressing plate begin to heat the plate. Subsequently, as the lifting plate continues to descend, the trigger rod passes through the avoidance channel and pushes the outer side of the top of the rotating plate until the lifting plate has descended a distance that reaches a fourth threshold, and the driving motor is stopped. At this time, the rotating plate rotates with the pin shaft as the axis, thereby lifting the lifting plate upward. At this time, the lifting plate drives the lower hot pressing plate to rise synchronously through the lifting rod, and then cooperates with the upper hot pressing plate driven down by the lifting plate to hot press the plate from below and above respectively, until the hot pressing is completed, and a multi-layer plate is produced.

[0026] S6, the driving motor drives the driving screw to rotate in the opposite direction, at this time the threaded sleeve drives the lifting plate to gradually move up and reset, and during the process of the lifting plate moving up, the trigger rod is gradually driven to release the downward pressure on the rotating plate and the push of the trigger plate. At this time, the lower hot pressing plate drives the lifting rod and the lifting plate to reset under the action of gravity, and the first positioning plate is reset under the pull of the first spring. When the lifting plate rises to the initial position, the inner blocking plate is pushed by the third spring, and then pushes the second positioning plate again through the outer blocking plate, thereby resetting the two second positioning plates. At this time, the multilayer board stays on the top of the lower hot pressing plate;

[0027] S7. A through hole is formed on the outermost copper wire board of the multilayer board, and then a conductive carbon paste is added inside the through hole to form a conductive carbon paste layer. Subsequently, a flexible fixing frame is installed at both ends of the multilayer board, and the required components are soldered to the surface of the copper wire board. Finally, a transparent protective film layer is coated on the upper surface of the multilayer board to obtain a circuit board embryo;

[0028] S8. Bake the circuit board embryo, then open heat dissipation holes on the periphery of the through hole, so that the heat dissipation holes pass through the honeycomb heat dissipation sheet, the copper wire plate and the protective film layer, and finally grind and polish to obtain a finished circuit board.

[0029] Technical effects and advantages of the present invention:

[0030] The present invention is provided with a lifting plate, a lifting mechanism, a trigger-type lateral positioning mechanism, a front and rear positioning mechanism and a driving mechanism, so that the driving mechanism can be used to drive the lifting plate, and then the trigger-type lateral positioning mechanism can be triggered during the lowering process of the lifting plate, thereby completing the lateral positioning of the plate. In addition, as the lifting plate is continuously driven, the front and rear positioning mechanisms are synchronously triggered due to the driving of the lifting plate, thereby completing the front and rear direction positioning of the plate. Finally, the lifting plate uses the triggered trigger-type lateral positioning mechanism to drive the front and rear positioning mechanisms, thereby causing the front and rear positioning mechanisms to drive the lower hot pressing plate to move up, completing the bidirectional hot pressing of the plate. Compared with the same type of devices or methods in the prior art, the present invention has a high degree of automation and can automatically realize multi-directional positioning of overlapping plates. In addition, after the hot pressing is completed, the positioning can be automatically released without manual operation, thereby improving the plate qualification rate while reducing the operation difficulty, and is more suitable for industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall front view structure of the present invention.

[0032] Figure 2 It is a front cross-sectional structural diagram of the lifting mechanism and the trigger-type lateral positioning mechanism of the present invention.

[0033] Figure 3 This is a schematic diagram of the cross-sectional structure of the front and rear positioning mechanism test of the present invention.

[0034] Figure 4 It is a front cross-sectional structural schematic diagram of the driving mechanism of the present invention.

[0035] In the figure: 1. hot press frame assembly; 11. base; 12. workbench; 13. lifting plate; 14. top plate; 15. column; 16. lower hot press plate; 17. upper hot press plate; 2. lifting mechanism; 21. limit seat; 22. rotating plate; 23. back plate; 24. lifting plate; 25. lifting rod; 3. trigger-type lateral positioning mechanism; 31. horizontal slide; 32. first positioning plate; 33. first spring; 34. trigger plate; 35. trigger groove; 36. avoidance channel; 37. trigger rod; 4. front and rear positioning mechanism; 41. cavity; 42. connecting slide; 43. second positioning plate; 44. second spring; 45. outer blocking plate; 5. driving mechanism; 51. driving motor; 52. driving screw; 53. threaded sleeve; 54. guide plate; 55. guide rod; 56. third spring; 57. inner blocking plate. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0037] Example 1

[0038] The present invention provides Figure 1-4 A manufacturing method for a circuit board for an automobile safety control system is shown. The manufacturing method for a circuit board for an automobile safety control system is implemented by a manufacturing device for a circuit board for an automobile safety control system. The manufacturing device for a circuit board for an automobile safety control system includes a hot pressing frame assembly 1.

[0039] like Figure 1 、 Figure 2 and Figure 3 As shown, the hot pressing frame assembly 1 includes a base 11, a workbench 12, a lifting plate 13, a top plate 14, a column 15, a lower hot pressing plate 16 and an upper hot pressing plate 17, wherein the base 11, the workbench 12, the lifting plate 13 and the top plate 14 are arranged in sequence from bottom to top, and there are four columns 15, which respectively pass through the four corners of the lifting plate 13 and the workbench 12, the workbench 12 is fixedly connected to the columns 15, and the lifting plate 13 is slidably connected to the columns 15, the base 11 is fixedly set at the bottom end of the four columns 15, the top plate 14 is fixedly set at the top end of the four columns 15, the lower hot pressing plate 16 is located at the top center of the workbench 12, and the upper hot pressing plate 17 is fixedly set at the bottom center of the lifting plate 13.

[0040] A lifting mechanism 2 is fixedly provided at the top center of the base 11, trigger-type lateral positioning mechanisms 3 are provided on both sides of the top of the workbench 12, front and rear positioning mechanisms 4 are provided inside the lifting plate 13 and at the bottom of the lifting plate 13, and a driving mechanism 5 is provided on the top of the top plate 14 and at the bottom of the top plate 14.

[0041] like Figure 2As shown, the lifting mechanism 2 includes a limit seat 21, a rotating plate 22, a back plate 23, a lifting plate 24 and a lifting rod 25, wherein the limit seat 21 is fixedly arranged on the top of the base 11, and two of the rotating plates 22, the back plate 23 and the lifting rod 25 are respectively provided. The two rotating plates 22 are respectively fitted on both sides of the top of the limit seat 21, and the two back plates 23 are respectively fixed on the front and back of the limit seat 21. The rotating plate 22 is rotated between the two back plates 23 through a pin shaft, and the lifting plate 24 is fitted on the top of the two rotating plates 22. The two lifting rods 25 are respectively fixed on both sides of the top of the lifting plate 24, and both slide through the bottom of the workbench 12 and extend to the top of the workbench 12 and are fixedly connected to the lower hot pressing plate 16.

[0042] By setting up the above structure, when the outer side of the top of the rotating plate 22 is pushed downward, the rotating plate 22 rotates around the pin shaft, thereby pushing the lifting plate 24 upward. At this time, the lifting plate 24 drives the lower hot pressing plate 16 to rise through the lifting rod 25, and then the lower hot pressing plate 16 is synchronously risen during the descending process of the upper hot pressing plate 17, so that the stacked plates are pressed more evenly, avoiding the occurrence of excessive local pressure caused by unidirectional hot pressing.

[0043] like Figure 2 and Figure 3 As shown, the trigger-type lateral positioning mechanism 3 includes a transverse slide groove 31, a first positioning plate 32, a first spring 33, a trigger plate 34, a trigger groove 35, an avoidance channel 36 and a trigger rod 37, wherein the transverse slide groove 31 is opened on the top side of the workbench 12, the first positioning plate 32 is slidably set on the inner side of the transverse slide groove 31, the first spring 33 is fixedly connected to the bottom of the side of the first positioning plate 32 and is fixedly connected to the inner wall of the transverse slide groove 31, the trigger plate 34 is slidably set on the top of the workbench 12, the trigger groove 35 is opened on the top of the trigger plate 34, the avoidance channel 36 is opened through the workbench 12, and the trigger rod 37 is fixedly set at the bottom of the lifting plate 13.

[0044] By setting the above structure, when the trigger rod 37 descends, the bottom end of the trigger rod 37 pushes the inclined portion of the inner wall of the trigger groove 35. As the trigger rod 37 continues to descend, the trigger rod 37 drives the trigger plate 34 to move in the direction close to the lower hot pressing plate 16 through the trigger groove 35. At this time, the trigger plate 34 pushes the first positioning plate 32 to move synchronously inside the horizontal sliding groove 31, thereby causing the first positioning plate 32 to push the stacked plates from the side, thereby completing the left and right positioning of the stacked plates. Subsequently, when the trigger rod 37 no longer pushes the inner wall of the trigger groove 35, the stretched first spring 33 pulls the first positioning plate 32, thereby causing the first positioning plate 32 to drive the trigger plate 34 to reset.

[0045] like Figure 3As shown, the front and rear positioning mechanism 4 includes a cavity 41, a connecting slide 42, a second positioning plate 43, a second spring 44 and an outer blocking plate 45, wherein the cavity 41 is opened inside the lifting plate 13, and two of the connecting slide 42, the second positioning plate 43, the second spring 44 and the outer blocking plate 45 are provided. The two connecting slides 42 are respectively opened on both sides of the bottom of the lifting plate 13 and are both connected to the cavity 41. The two second positioning plates 43 are respectively slidably arranged on the inner sides of the two connecting slides 42 and extend into the interior of the cavity 41. The two second springs 44 are respectively fixedly connected to the outer tops of the two second positioning plates 43 and are both fixedly connected to the inner wall of the cavity 41. The two outer blocking plates 45 are respectively fixedly arranged on the inner sides of the two second positioning plates 43 and are both slidably connected to the inner wall of the cavity 41.

[0046] By setting the above structure, when the outer blocking plate 45 is no longer blocked, the second spring 44 pushes the second positioning plate 43, thereby moving the second positioning plate 43 along the connecting slide 42 toward the direction close to the upper hot pressing plate 17, and then pushing the stacked plates in the front and rear directions respectively, so that the plates complete the positioning in the front and rear directions.

[0047] like Figure 3 and Figure 4 As shown, the driving mechanism 5 includes a driving motor 51, a driving screw 52, ​​a threaded sleeve 53, a guide plate 54, a guide rod 55, a third spring 56 and an inner blocking plate 57, wherein the driving motor 51 is fixedly arranged on the top of the top plate 14, the driving screw 52 is rotatably nested at the bottom of the top plate 14 through a bearing, and is transmission-connected to the driving motor 51, the threaded sleeve 53 is sleeved on the outside of the driving screw 52 and is threadedly connected to the driving screw 52, ​​the lifting plate 13 is fixedly sleeved on the outer bottom of the threaded sleeve 53, the guide plate 54 is fixedly sleeved on the outer side of the threaded sleeve 53, two guide rods 55 are provided, and the two guide rods 55 are respectively slidably penetrated on both sides of the top of the guide plate 54 and are fixedly connected to the top plate 14, the third spring 56 is rotatably connected to the bottom end of the driving screw 52 through a bearing, and the inner blocking plate 57 is fixedly connected to the bottom end of the third spring 56 and is slidably arranged inside the cavity 41 along the vertical direction.

[0048] By setting up the above structure, the driving motor 51 can drive the driving screw 52 to rotate after it is started, and the driving screw 52 drives the threaded sleeve 53 when it rotates. Since the threaded sleeve 53 is limited by the guide plate 54 and the guide rod 55, the threaded sleeve 53 can only drive the lifting plate 13 to descend or ascend after being driven. When the threaded sleeve 53 drives the lifting plate 13 to descend, as the lifting plate 13 continues to descend, the third spring 56 compressed at the bottom of the driving screw 52 gradually resets, and after resetting, it drives the inner blocking plate 57 to rise, thereby releasing the blockage of the outer blocking plate 45.

[0049] Example 2

[0050] The method specifically comprises the following steps:

[0051] S1. Take a rigid bending-resistant plate with elastic connecting ribs, two flexible prepregs, two honeycomb heat dissipation sheets, and two copper wire plates, stack them in sequence, and place them on top of the lower hot press plate 16, then start the drive motor 51.

[0052] S2. After the drive motor 51 is started, it drives the drive screw 52 to rotate. When the drive screw 52 rotates, it drives the threaded sleeve 53, which is limited by the guide plate 54 and the guide rod 55, to descend. When the threaded sleeve 53 descends, it drives the lifting plate 13 to descend synchronously. When the lifting plate 13 descends, it pushes the inner wall of the trigger groove 35 through the trigger rod 37, so that the trigger plate 34 pushes the first positioning plate 32 inward. At this time, the first positioning plate 32 slides inward along the horizontal sliding groove 31.

[0053] S3. When the lifting plate 13 descends a distance that reaches a first threshold, the two first positioning plates 32 push the plate from both sides, thereby aligning the plate on the left and right sides. Furthermore, during the descent of the lifting plate 13, the compressed third spring 56 gradually returns to its original position as the lifting plate 13 descends.

[0054] S4. When the lifting plate 13 has descended a distance that reaches the second threshold, the fully reset third spring 56 drives the inner blocking plate 57 upward, thereby releasing the inner blocking plate 57 from the position restraining the outer blocking plate 45. At this time, the second positioning plate 43, pushed by the second spring 44, slides along the connecting slide 42 toward the upper hot pressing plate 17, thereby pushing the plates in the front-to-back direction, so that the plates are aligned in the front-to-back direction.

[0055] S5. When the lifting plate 13 has descended a distance that reaches the third threshold, the upper hot pressing plate 17 contacts the uppermost plate. At this time, power is supplied to the lower hot pressing plate 16 and the upper hot pressing plate 17, and the lower hot pressing plate 16 and the upper hot pressing plate 17 begin to heat the plate. Subsequently, as the lifting plate 13 continues to descend, the trigger rod 37 passes through the avoidance channel 36 and pushes the outer side of the top of the rotating plate 22 until the lifting plate 13 has descended a distance that reaches the fourth threshold, and the driving motor 51 is stopped. At this time, the rotating plate 22 rotates with the pin shaft as the axis, thereby lifting the lifting plate 24 upward. At this time, the lifting plate 24 drives the lower hot pressing plate 16 to rise synchronously through the lifting rod 25, and then cooperates with the upper hot pressing plate 17 driven down by the lifting plate 13 to hot press the plate from the bottom and the top respectively, until the hot pressing is completed, and a multi-layer plate is produced.

[0056] S6, the driving motor 51 drives the driving screw 52 to rotate in the opposite direction, at this time the threaded sleeve 53 drives the lifting plate 13 to gradually move up and reset, and the lifting plate 13 gradually drives the trigger rod 37 to release the downward pressure on the rotating plate 22 and the push of the trigger plate 34 during the upward movement, at this time the lower hot pressing plate 16 drives the lifting rod 25 and the lifting plate 24 to reset under the action of gravity, and the first positioning plate 32 is reset under the pull of the first spring 33. When the lifting plate 13 rises to the initial position, the inner blocking plate 57 is pushed by the third spring 56, and then pushes the second positioning plate 43 again through the outer blocking plate 45, so that the two second positioning plates 43 are reset, and the multilayer board stays on the top of the lower hot pressing plate 16;

[0057] S7. A through hole is formed on the outermost copper wire board of the multilayer board, and then a conductive carbon paste is added inside the through hole to form a conductive carbon paste layer. Subsequently, a flexible fixing frame is installed at both ends of the multilayer board, and the required components are soldered to the surface of the copper wire board. Finally, a transparent protective film layer is coated on the upper surface of the multilayer board to obtain a circuit board embryo;

[0058] S8. Bake the circuit board embryo, then open heat dissipation holes on the periphery of the through hole, so that the heat dissipation holes pass through the honeycomb heat dissipation sheet, the copper wire plate and the protective film layer, and finally grind and polish to obtain a finished circuit board.

[0059] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for manufacturing a circuit board for an automobile safety control system, characterized in that: The manufacturing method for a circuit board for an automobile safety control system is realized by a manufacturing device for a circuit board for an automobile safety control system. The manufacturing device for a circuit board for an automobile safety control system comprises a hot pressing frame assembly (1); The hot pressing frame assembly (1) comprises a base (11), a workbench (12), a lifting plate (13), a top plate (14), a column (15), a lower hot pressing plate (16) and an upper hot pressing plate (17); The base (11), the workbench (12), the lifting plate (13) and the top plate (14) are arranged in sequence from bottom to top, four columns (15) are provided, and the four columns (15) respectively pass through the four corners of the lifting plate (13) and the workbench (12), the workbench (12) is fixedly connected to the columns (15), the lifting plate (13) is slidably connected to the columns (15), the base (11) is fixedly provided at the bottom ends of the four columns (15), the top plate (14) is fixedly provided at the top ends of the four columns (15), the lower hot pressing plate (16) is located at the top center of the workbench (12), and the upper hot pressing plate (17) is fixedly provided at the bottom center of the lifting plate (13); A lifting mechanism (2) is fixedly provided at the center of the top of the base (11), trigger-type lateral positioning mechanisms (3) are provided on both sides of the top of the workbench (12), front and rear positioning mechanisms (4) are provided inside the lifting plate (13) and at the bottom of the lifting plate (13), and a driving mechanism (5) is provided on the top of the top plate (14) and at the bottom of the top plate (14); The lifting mechanism (2) comprises a limiting seat (21), a rotating plate (22), a back plate (23), a lifting plate (24) and a lifting rod (25); The limit seat (21) is fixedly arranged on the top of the base (11), and two of the rotating plates (22), the back plate (23) and the lifting rod (25) are respectively provided. The two rotating plates (22) are respectively fitted on both sides of the top of the limit seat (21), and the two back plates (23) are respectively fixed on the front and back of the limit seat (21). The rotating plate (22) is rotated between the two back plates (23) through a pin shaft. The lifting plate (24) is fitted on the top of the two rotating plates (22). The two lifting rods (25) are respectively fixed on both sides of the top of the lifting plate (24), and both slide through the bottom of the workbench (12) and extend to the top of the workbench (12) and are fixedly connected to the lower hot pressing plate (16).

2. The method for manufacturing a circuit board for an automobile safety control system according to claim 1, characterized in that: The trigger-type lateral positioning mechanism (3) comprises a transverse sliding groove (31), a first positioning plate (32), a first spring (33), a trigger plate (34), a trigger groove (35), an avoidance channel (36) and a trigger rod (37).

3. The method for manufacturing a circuit board for an automobile safety control system according to claim 2, characterized in that: The transverse slide groove (31) is provided on the top side of the workbench (12); the first positioning plate (32) is slidably provided on the inner side of the transverse slide groove (31); the first spring (33) is fixedly connected to the bottom side of the first positioning plate (32) and is fixedly connected to the inner wall of the transverse slide groove (31); the trigger plate (34) is slidably provided on the top of the workbench (12); the trigger groove (35) is provided on the top of the trigger plate (34); the avoidance channel (36) is provided through the workbench (12); and the trigger rod (37) is fixedly provided on the bottom of the lifting plate (13).

4. The method for manufacturing a circuit board for an automobile safety control system according to claim 3, wherein: The front and rear positioning mechanism (4) comprises a cavity (41), a connecting slideway (42), a second positioning plate (43), a second spring (44) and an outer blocking plate (45).

5. The method for manufacturing a circuit board for an automobile safety control system according to claim 4, characterized in that: The cavity (41) is opened inside the lifting plate (13), and two of the connecting slides (42), the second positioning plate (43), the second spring (44) and the outer blocking plate (45) are provided. The two connecting slides (42) are respectively opened on both sides of the bottom of the lifting plate (13) and are both connected to the cavity (41). The two second positioning plates (43) are respectively slidably arranged on the inner sides of the two connecting slides (42) and extend into the interior of the cavity (41). The two second springs (44) are respectively fixedly connected to the outer tops of the two second positioning plates (43) and are both fixedly connected to the inner wall of the cavity (41). The two outer blocking plates (45) are respectively fixedly arranged on the inner sides of the two second positioning plates (43) and are both slidably connected to the inner wall of the cavity (41).

6. The method for manufacturing a circuit board for an automobile safety control system according to claim 5, characterized in that: The driving mechanism (5) comprises a driving motor (51), a driving screw (52), a threaded sleeve (53), a guide plate (54), a guide rod (55), a third spring (56) and an inner blocking plate (57).

7. The method for manufacturing a circuit board for an automobile safety control system according to claim 6, characterized in that: The driving motor (51) is fixedly arranged on the top of the top plate (14); the driving screw (52) is rotatably nested at the bottom of the top plate (14) through a bearing and is transmission-connected to the driving motor (51); the threaded sleeve (53) is sleeved on the outside of the driving screw (52) and is threadedly connected to the driving screw (52); the lifting plate (13) is fixedly sleeved on the bottom of the outer side of the threaded sleeve (53); the guide plate (54) is fixedly sleeved on the outer side of the threaded sleeve (53); two guide rods (55) are provided, and the two guide rods (55) are respectively slidably penetrated and arranged on both sides of the top of the guide plate (54) and are both fixedly connected to the top plate (14); the third spring (56) is rotatably connected to the bottom end of the driving screw (52) through a bearing; the inner blocking plate (57) is fixedly connected to the bottom end of the third spring (56) and is slidably arranged inside the cavity (41) along the vertical direction.

8. The method for manufacturing a circuit board for an automobile safety control system according to claim 7, characterized in that: The method specifically comprises the following steps: S1, taking a rigid bending-resistant plate with elastic connecting ribs, two flexible prepregs, two honeycomb heat dissipation sheets, and two copper wire plates, stacking them in sequence and placing them on top of the lower hot press plate (16), and then starting the drive motor (51); S2, after the driving motor (51) is started, the driving screw (52) is driven to rotate. When the driving screw (52) rotates, the threaded sleeve (53) limited by the guide plate (54) and the guide rod (55) is driven to descend. When the threaded sleeve (53) descends, the lifting plate (13) is driven to descend synchronously. When the lifting plate (13) descends, the trigger rod (37) pushes the inner wall of the trigger groove (35), thereby causing the trigger plate (34) to push the first positioning plate (32) inward. At this time, the first positioning plate (32) slides inward along the transverse sliding groove (31); S3. When the lifting plate (13) descends a distance that reaches a first threshold, the two first positioning plates (32) push the plate from both sides, thereby aligning the plate on the left and right sides. In addition, during the descending process of the lifting plate (13), the compressed third spring (56) gradually resets as the lifting plate (13) descends; S4. When the descending distance of the lifting plate (13) reaches the second threshold value, the third spring (56) after being fully reset drives the inner blocking plate (57) to rise, thereby releasing the inner blocking plate (57) from limiting the outer blocking plate (45). At this time, under the push of the second spring (44), the second positioning plate (43) slides along the connecting slideway (42) toward the upper hot pressing plate (17), thereby pushing the plate in the front and rear directions respectively, so that the plate is aligned in the front and rear directions; S5. When the lifting plate (13) has descended a distance that reaches a third threshold, the upper hot pressing plate (17) contacts the plate at the top. At this time, the lower hot pressing plate (16) and the upper hot pressing plate (17) are powered, and the lower hot pressing plate (16) and the upper hot pressing plate (17) begin to heat the plate. Subsequently, as the lifting plate (13) continues to descend, the trigger rod (37) passes through the avoidance channel (36) and pushes the outer side of the top of the rotating plate (22) until the lifting plate (13) has descended a distance that reaches a fourth threshold, and the driving motor (51) is stopped. At this time, the rotating plate (22) rotates with the pin shaft as the axis, and then lifts the lifting plate (24) upward. At this time, the lifting plate (24) drives the lower hot pressing plate (16) to rise synchronously through the lifting rod (25), and then cooperates with the upper hot pressing plate (17) driven down by the lifting plate (13) to heat press the plate from the bottom and the top respectively, until the hot pressing is completed, and a multi-layer plate is produced. S6, the driving motor (51) drives the driving screw (52) to rotate in the opposite direction, at this time the threaded sleeve (53) drives the lifting plate (13) to gradually move up and reset, and the lifting plate (13) gradually drives the trigger rod (37) to release the downward pressure on the rotating plate (22) and the push of the trigger plate (34) during the upward movement, and at this time the lower hot pressing plate (16) drives the lifting rod (25) and the lifting plate (24) to reset under the action of gravity, and the first positioning plate (32) is reset under the pull of the first spring (33), and when the lifting plate (13) rises to the initial position, the inner blocking plate (57) is pushed by the third spring (56), and then the second positioning plate (43) is pushed again through the outer blocking plate (45), thereby resetting the two second positioning plates (43), and at this time the multilayer board stays on the top of the lower hot pressing plate (16); S7. A through hole is formed on the outermost copper wire board of the multilayer board, and then a conductive carbon paste is added inside the through hole to form a conductive carbon paste layer. Subsequently, a flexible fixing frame is installed at both ends of the multilayer board, and the required components are soldered to the surface of the copper wire board. Finally, a transparent protective film layer is coated on the upper surface of the multilayer board to obtain a circuit board embryo; S8. Bake the circuit board embryo, then open heat dissipation holes on the periphery of the through hole, so that the heat dissipation holes pass through the honeycomb heat dissipation sheet, the copper wire plate and the protective film layer, and finally grind and polish to obtain a finished circuit board.

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