A method for manufacturing a printed circuit board for a new energy vehicle inverter

Abstract

The present invention discloses a method for manufacturing a printed circuit board for a new energy vehicle inverter, and relates to the field of automobile production technology. The method for manufacturing the printed circuit board for the new energy vehicle inverter is implemented by manufacturing equipment for the printed circuit board for the new energy vehicle inverter. The manufacturing equipment for the printed circuit board for the new energy vehicle inverter includes a base, a back plate is fixedly provided on the top rear side of the base, and a mounting plate is fixedly provided on the front bottom of the back plate; a driving mechanism is provided on the mounting plate, a lifting mechanism is provided on the outer transmission side of the driving mechanism, and a supporting mechanism is provided on the top of the lifting mechanism. The present invention can more conveniently prevent solder mask ink from entering the inner side of the back drill hole during the application process, has low operational difficulty, and is more convenient to use in practice. It can effectively improve the production efficiency of the circuit board, reduce the production cost of the circuit board, and is more suitable for the industrialized production of printed circuit boards for new energy vehicle inverters.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile production, and in particular to a method for manufacturing a printed circuit board of an inverter of a new energy automobile. Background Art

[0002] New energy vehicles use unconventional automotive fuels as their power source and integrate advanced technologies in vehicle power control and driving to form vehicles with advanced technical principles, new technologies and new structures.

[0003] The invention patent with authorization announcement number CN 111741603B discloses a method for manufacturing printed circuit boards for new energy smart cars, including the following steps: S1. Stacking multiple core boards in sequence, pressing the multiple core boards into printed circuit boards with the help of a stamping device, and drilling back holes on the printed circuit boards with a drilling device; S2. Placing the printed circuit board with back-drilled holes on a workbench, adding reducing iron powder to the solder resist ink and stirring it evenly, and then adding an ink traction device to the back-drilled holes; S3. Applying the solder resist ink with added reducing iron powder on the surface of the printed circuit board, and surrounding the back-drilled holes with the applied solder resist ink layer, and using the ink traction device to evenly adsorb the solder resist ink to the opening of the back-drilled holes, thereby completing the manufacture of the printed circuit board.

[0004] However, after actual use by technicians in this field, it was found that the above method still has some shortcomings. The most obvious one is that before printing the solder mask ink, the technician needs to add the ink traction device to the inside of the back-drilled hole and fix it. After the printing of the solder mask ink is completed, the fixed ink traction device needs to be removed from the inside of the back-drilled hole. The operation is difficult and time-consuming, which has a great impact on the production efficiency of the circuit board.

[0005] In addition, the above method mainly utilizes the chemical reaction inside the ink traction device to cause the ink traction device to expand, and then seal the back drilling hole. Therefore, as time goes by, technicians also need to manually add reaction raw materials to the smaller ink traction device, which is too inconvenient to use in practice and increases the production cost of the circuit board.

[0006] Therefore, it is necessary to invent a method for manufacturing a new energy vehicle inverter printed circuit board to solve the above problems. Summary of the Invention

[0007] The object of the present invention is to provide a method for manufacturing a printed circuit board for a new energy vehicle inverter 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 printed circuit board for a new energy vehicle inverter, the method being implemented by a manufacturing device for a printed circuit board for a new energy vehicle inverter, the manufacturing device comprising a base, a back plate fixedly disposed on the top rear side of the base, and a mounting plate fixedly disposed on the front bottom of the back plate;

[0009] The mounting plate is provided with a driving mechanism, a lifting mechanism is provided on the outer side of the driving mechanism, a supporting mechanism is provided on the top of the lifting mechanism, and a limiting mechanism is provided on the outer side of the supporting mechanism;

[0010] The driving mechanism includes a driving screw, a driving motor, a driving gear, a magnet, a valve, a first air hole and a second air hole;

[0011] The driving screw passes through the mounting plate and is rotatably connected to the mounting plate through a bearing. The driving motor is fixedly arranged on the left side of the bottom of the mounting plate. Two driving gears are provided. The driving screw and the driving motor are connected through two driving gears. The magnet is fixedly arranged at the top of the driving screw. The valve is fixedly arranged at the top inside the driving screw. The first air hole and the second air hole are opened in sequence from top to bottom on the front side of the driving screw.

[0012] Preferably, the lifting mechanism includes a blocking sleeve, a lifting plate, a guide rod, a telescopic rod and a spring.

[0013] Preferably, the blocking sleeve is sleeved on the outside of the driving screw and is transmission-connected to the driving screw through a reciprocating thread, the lifting plate is fixedly sleeved on the outside of the blocking sleeve, two guide rods are provided, and the two guide rods are respectively slid through and provided on both sides of the top of the lifting plate and are fixedly connected to the mounting plate, two telescopic rods and two springs are respectively provided, and the two telescopic rods are respectively fixedly provided on both sides of the top of the lifting plate, and the two springs are respectively sleeved on the outside of the two telescopic rods.

[0014] Preferably, the supporting mechanism includes a supporting seat, an operating channel, a positioning groove, an adsorption channel, an adsorption chamber, an air inlet channel and an exhaust channel.

[0015] Preferably, the supporting seat is fixedly provided at the top end of the two telescopic rods, the operating channel is provided through the center of the bottom of the supporting seat, the positioning groove is opened at the top of the supporting seat and is connected with the operating channel, a plurality of the adsorption channels are provided, and a plurality of the adsorption channels are evenly opened at the inner bottom of the positioning groove, the adsorption chamber is opened inside the supporting seat and is connected with a plurality of adsorption channels, the air intake channel is opened on the left side of the supporting seat, and the exhaust channel is opened on the right side of the supporting seat, and both the air intake channel and the exhaust channel are connected with the adsorption chamber.

[0016] Preferably, the limiting mechanism includes an outer frame, an air inlet groove, an air exhaust groove, a sealing cover, a first guide pipe, an air pump, a second guide pipe and an annular top plate.

[0017] Preferably, the annular top plate is fixedly arranged on the top ends of the two guide rods, the outer frame is fixedly arranged on the top of the annular top plate and is slidably sleeved on the outside of the supporting seat, the air inlet groove is opened on the left side of the outer frame, the exhaust groove is opened on the right side of the outer frame, the sealing cover is located outside the exhaust groove and is fixedly connected to the outer frame, the first guide pipe is fixedly penetrated and arranged on the right side of the sealing cover, the air pump is fixedly connected to the end of the first guide pipe, one end of the second guide pipe is fixedly connected to the output end of the air pump and the other end is connected to the bottom end of the driving screw through a rotary joint.

[0018] Preferably, the manufacturing method specifically comprises the following steps:

[0019] S1. Place the circuit board with the back-drilled hole into the inner side of the positioning groove. At this time, the operating channel is located directly below the back-drilled hole of the circuit board. Then start the drive motor and the air pump. After the drive motor starts, it drives the drive screw to rotate through the drive gear. When the drive screw rotates, it drives the lifting plate to descend through the blocking sleeve. When the lifting plate descends, it drives the supporting seat to descend through the telescopic rod, thereby synchronously lowering the circuit board. The drive screw and the magnet rise relatively inside the operating channel.

[0020] S2: After the air pump is started, air is sucked in through the first guide tube, the sealing cover and the exhaust groove, and then input into the driving screw through the second guide tube. The airflow entering the driving screw is blocked by the valve and can only be output through the second air hole;

[0021] S3. When the blocking sleeve descends a distance reaching a first threshold, the support seat drives the air inlet channel to communicate with the air inlet groove, and the air outlet channel to communicate with the air outlet groove. The air pump begins to draw air from the adsorption chamber through the first guide pipe, the sealing cover, the air outlet groove, and the air outlet channel, thereby generating a negative pressure in the adsorption chamber. The negative pressure is transmitted to the interior of the positioning groove through the adsorption channel, thereby adsorbing and fixing the circuit board to be processed;

[0022] S4. When the blocking sleeve descends a distance that reaches a second threshold, the bottom of the support seat contacts the top of the annular top plate. At this point, the circuit board reaches the ink application station, and the magnet passes through the back-drilled hole on the circuit board and extends out of the back-drilled hole. Subsequently, as the blocking sleeve continues to descend, the support seat is blocked by the annular top plate and cannot continue to descend. The telescopic rod and spring are continuously stretched.

[0023] S5. When the blocking sleeve descends a distance that reaches a third threshold, the blocking sleeve moves to the outside of the second air hole and blocks the second air hole. At this time, the airflow inside the driving screw can no longer be discharged through the second air hole and can only break open the valve and then be discharged through the first air hole. Under the constraints of the operating channel and the back-drilled hole, the airflow discharged from the first air hole continuously flows upward and downward along the inner wall of the operating channel and the inner wall of the back-drilled hole, thereby forming an airflow wall outside the magnet;

[0024] S6. A technician applies solder resist ink mixed with reducing iron powder to the top of the circuit board manually or using other equipment. The magnet attracts the solder resist ink mixed with reducing iron powder, causing it to flow to the opening of the back-drilled hole. However, the ink cannot flow into the back-drilled hole due to the obstruction of the air flow wall.

[0025] S7. When the descending distance of the blocking sleeve reaches the fourth threshold, the blocking sleeve moves to the lowest end of the reciprocating thread on the outside of the driving screw. Subsequently, as the driving screw rotates, the blocking sleeve begins to rise along the driving screw. The continuously rising blocking sleeve begins to drive the supporting mechanism to reset. After the supporting mechanism is completely reset, the circuit board can be removed from the inside of the positioning groove.

[0026] Technical effects and advantages of the present invention:

[0027] The present invention is provided with a driving mechanism, a lifting mechanism, a supporting mechanism and a limiting mechanism, so that the driving mechanism can be used to drive the lifting mechanism, and then the lifting mechanism drives the supporting mechanism with the circuit board placed thereon to descend to the inner side of the limiting mechanism, and then the limiting mechanism cooperates with the supporting mechanism to complete the adsorption and fixation of the circuit board and transport the circuit board to the ink coating station. Subsequently, as the driving mechanism continues to drive the lifting mechanism, the lifting mechanism triggers the driving mechanism, and then the driving mechanism cooperates with the supporting mechanism and the limiting mechanism to form an air flow wall in the back-drilled hole. After the subsequent ink is coated, the driving mechanism attracts the ink while preventing the ink from entering the back-drilled hole. Compared with the same type of device or method in the prior art, the present invention can more conveniently prevent the solder mask ink from entering the inner side of the back-drilled hole during the coating process, has low operation difficulty and is more convenient to use in actual use. It can effectively improve the production efficiency of the circuit board, reduce the production cost of the circuit board, and is more suitable for the industrial production of printed circuit boards for inverters of new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall front cross-sectional structure of the present invention.

[0029] Figure 2 It is a schematic diagram of the front cross-sectional structure of the driving mechanism of the present invention.

[0030] Figure 3 It is a schematic diagram of the front cross-sectional structure of the lifting mechanism of the present invention.

[0031] Figure 4 It is a schematic diagram of the front cross-sectional structure of the supporting mechanism of the present invention.

[0032] Figure 5 It is a schematic diagram of the front cross-sectional structure of the limiting mechanism of the present invention.

[0033] In the figure: 1. base; 2. back plate; 3. mounting plate; 4. driving mechanism; 41. driving screw; 42. driving motor; 43. driving gear; 44. magnet; 45. valve; 46. first air hole; 47. second air hole; 5. lifting mechanism; 51. sealing sleeve; 52. lifting plate; 53. guide rod; 54. telescopic rod; 55. spring; 6. supporting mechanism; 61. supporting seat; 62. operating channel; 63. positioning groove; 64. adsorption channel; 65. adsorption chamber; 66. air inlet channel; 67. exhaust channel; 7. limiting mechanism; 71. outer frame; 72. air inlet groove; 73. exhaust groove; 74. sealing cover; 75. first guide pipe; 76. air pump; 77. second guide pipe; 78. annular top plate. DETAILED DESCRIPTION

[0034] 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.

[0035] Example 1

[0036] The present invention provides Figure 1 -5 shows a method for manufacturing a new energy vehicle inverter printed circuit board, which is implemented by a new energy vehicle inverter printed circuit board manufacturing device, and the new energy vehicle inverter printed circuit board manufacturing device includes a base 1, a back plate 2 is fixedly provided on the top rear side of the base 1, and a mounting plate 3 is fixedly provided on the front bottom of the back plate 2;

[0037] The mounting plate 3 is provided with a driving mechanism 4 , a lifting mechanism 5 is provided on the outer side of the driving mechanism 4 , a supporting mechanism 6 is provided on the top of the lifting mechanism 5 , and a limiting mechanism 7 is sleeved on the outer side of the supporting mechanism 6 .

[0038] like Figure 2As shown, the driving mechanism 4 includes a driving screw 41, a driving motor 42, a driving gear 43, a magnet 44, a valve 45, a first air hole 46 and a second air hole 47, wherein the driving screw 41 passes through the mounting plate 3 and is rotatably connected to the mounting plate 3 through a bearing, the driving motor 42 is fixedly arranged on the left side of the bottom of the mounting plate 3, two driving gears 43 are provided, and the driving screw 41 and the driving motor 42 are transmission-connected through two driving gears 43, the magnet 44 is fixedly arranged on the top of the driving screw 41, the valve 45 is fixedly arranged on the inner top of the driving screw 41, and the first air hole 46 and the second air hole 47 are sequentially opened on the front of the driving screw 41 from top to bottom.

[0039] By setting the above structure, the driving motor 42 drives the driving screw 41 to rotate continuously through the driving gear 43, and then the driving screw 41 drives the lifting mechanism 5. At the same time, when the airflow enters the driving screw 41, due to the obstruction of the valve 45, the airflow can only be output through the second air hole 47. Subsequently, when the second air hole 47 is blocked, the airflow breaks through the valve 45 and is output through the first air hole 46. At this time, due to the obstruction of the back drilled hole, the airflow forms an airflow wall on the outside of the magnet 44.

[0040] like Figure 3 As shown, the lifting mechanism 5 includes a sealing sleeve 51, a lifting plate 52, a guide rod 53, a telescopic rod 54 and a spring 55, wherein the sealing sleeve 51 is sleeved on the outside of the driving screw 41 and is transmission-connected to the driving screw 41 through a reciprocating thread, the lifting plate 52 is fixedly sleeved on the outside of the sealing sleeve 51, two guide rods 53 are provided, and the two guide rods 53 are respectively slid through and arranged on both sides of the top of the lifting plate 52 and are fixedly connected to the mounting plate 3, two telescopic rods 54 and two springs 55 are respectively provided, and the two telescopic rods 54 are respectively fixedly arranged on both sides of the top of the lifting plate 52, and the two springs 55 are respectively sleeved on the outside of the two telescopic rods 54.

[0041] By setting up the above structure, when the driving screw 41 rotates, the driving screw 41 drives the blocking sleeve 51 to descend synchronously. When the blocking sleeve 51 descends, the telescopic rod 54 is driven to descend synchronously through the lifting plate 52, and then the telescopic rod 54 drives the supporting mechanism 6 to descend synchronously. Subsequently, when the supporting mechanism 6 cannot descend, as the blocking sleeve 51 continues to descend, the telescopic rod 54 and the spring 55 are stretched.

[0042] like Figure 4As shown, the supporting mechanism 6 includes a supporting seat 61, an operating channel 62, a positioning groove 63, an adsorption channel 64, an adsorption chamber 65, an air intake channel 66 and an exhaust channel 67, wherein the supporting seat 61 is fixedly arranged at the top of the two telescopic rods 54, the operating channel 62 is arranged through the center of the bottom of the supporting seat 61, the positioning groove 63 is opened at the top of the supporting seat 61 and is connected with the operating channel 62, a plurality of the adsorption channels 64 are provided, and a plurality of the adsorption channels 64 are evenly opened at the bottom inner side of the positioning groove 63, the adsorption chamber 65 is opened inside the supporting seat 61 and is connected with a plurality of adsorption channels 64, the air intake channel 66 is opened on the left side of the supporting seat 61, and the exhaust channel 67 is opened on the right side of the supporting seat 61, and the air intake channel 66 and the exhaust channel 67 are both connected with the adsorption chamber 65.

[0043] By setting the above structure, when the air inside the adsorption chamber 65 is sucked, negative pressure is generated inside the adsorption chamber 65, and then the negative pressure is transmitted to the inside of the positioning groove 63 through the adsorption channel 64, thereby adsorbing and fixing the circuit board to be processed.

[0044] like Figure 5 As shown, the limiting mechanism 7 includes an outer frame 71, an air inlet groove 72, an exhaust groove 73, a sealing cover 74, a first guide pipe 75, an air pump 76, a second guide pipe 77 and an annular top plate 78, wherein the annular top plate 78 is fixedly arranged on the top of the two guide rods 53, the outer frame 71 is fixedly arranged on the top of the annular top plate 78 and is slidably sleeved on the outside of the supporting seat 61, the air inlet groove 72 is opened on the left side of the outer frame 71, the exhaust groove 73 is opened on the right side of the outer frame 71, the sealing cover 74 is located on the outside of the exhaust groove 73 and is fixedly connected to the outer frame 71, the first guide pipe 75 is fixedly penetrated and arranged on the right side of the sealing cover 74, the air pump 76 is fixedly connected to the end of the first guide pipe 75, one end of the second guide pipe 77 is fixedly connected to the output end of the air pump 76 and the other end is connected to the bottom end of the drive screw 41 through a rotary joint.

[0045] By setting the above structure, after the air pump 76 is started, air is inhaled through the first guide tube 75, the sealing cover 74 and the exhaust groove 73, and then input into the driving screw 41 through the second guide tube 77. The airflow entering the driving screw 41 is blocked by the valve 45 and can only be output through the second air hole 47. Subsequently, when the support seat 61 drops to the inner side of the outer frame 71 and contacts the annular top plate 78, the air inlet channel 66 is connected with the air inlet groove 72, and the exhaust channel 67 is connected with the exhaust groove 73. The air pump 76 starts to suck the air inside the adsorption chamber 65 through the first guide tube 75, the sealing cover 74, the exhaust groove 73 and the exhaust channel 67.

[0046] Example 2

[0047] The manufacturing method specifically comprises the following steps:

[0048] S1. Place the circuit board with the back-drilled hole into the inner side of the positioning groove 63. At this time, the operating channel 62 is located directly below the back-drilled hole of the circuit board. Then, start the drive motor 42 and the air pump 76. After the drive motor 42 is started, it drives the drive screw 41 to rotate via the drive gear 43. When the drive screw 41 rotates, it drives the lifting plate 52 to descend via the blocking sleeve 51. When the lifting plate 52 descends, it drives the supporting base 61 to descend via the telescopic rod 54, thereby synchronously descending the circuit board. The drive screw 41 and the magnet 44 rise relative to each other inside the operating channel 62.

[0049] S2. After the air pump 76 is started, air is sucked in through the first guide tube 75, the sealing cover 74 and the exhaust groove 73, and then input into the driving screw 41 through the second guide tube 77. The airflow entering the driving screw 41 is blocked by the valve 45 and can only be output through the second air hole 47;

[0050] S3. When the blocking sleeve 51 descends a distance reaching a first threshold, driven by the support seat 61, the air inlet channel 66 is connected to the air inlet groove 72, and the exhaust channel 67 is connected to the exhaust groove 73. The air pump 76 begins to suck the air inside the adsorption chamber 65 through the first guide pipe 75, the sealing cover 74, the exhaust groove 73, and the exhaust channel 67, thereby generating a negative pressure inside the adsorption chamber 65. The negative pressure is transmitted to the interior of the positioning groove 63 through the adsorption channel 64, thereby adsorbing and fixing the circuit board to be processed;

[0051] S4. When the blocking sleeve 51 descends a distance that reaches a second threshold, the bottom of the support seat 61 contacts the top of the annular top plate 78. At this point, the circuit board reaches the ink application station. The magnet 44 passes through the back-drilled hole on the circuit board and extends out of the back-drilled hole. Subsequently, as the blocking sleeve 51 continues to descend, the support seat 61 is blocked by the annular top plate 78 and cannot continue to descend. The telescopic rod 54 and the spring 55 are continuously stretched.

[0052] S5. When the blocking sleeve 51 descends a distance that reaches a third threshold, the blocking sleeve 51 moves to the outside of the second air hole 47 and blocks the second air hole 47. At this time, the airflow inside the driving screw 41 can no longer be discharged through the second air hole 47 and can only break open the valve 45 and then be discharged through the first air hole 46. The airflow discharged from the first air hole 46 is constrained by the operating channel 62 and the back-drilled hole and continuously flows upward and downward along the inner wall of the operating channel 62 and the inner wall of the back-drilled hole, thereby forming an airflow wall outside the magnet 44.

[0053] S6. A technician applies solder resist ink mixed with reducing iron powder to the top of the circuit board manually or using other equipment. Magnet 44 attracts the solder resist ink mixed with reducing iron powder, causing it to flow to the opening of the back-drilled hole. However, the ink cannot flow into the back-drilled hole due to the obstruction of the airflow wall.

[0054] S7. When the descending distance of the blocking sleeve 51 reaches the fourth threshold, the blocking sleeve 51 moves to the lowest end of the reciprocating thread on the outside of the driving screw 41. Subsequently, as the driving screw 41 rotates, the blocking sleeve 51 begins to rise along the driving screw 41. The continuously rising blocking sleeve 51 begins to drive the supporting mechanism 6 to reset. After the supporting mechanism 6 is completely reset, the circuit board can be removed from the inside of the positioning groove 63.

[0055] 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 printed circuit board for a new energy vehicle inverter, characterized in that: The manufacturing method of the new energy vehicle inverter printed circuit board is realized by a manufacturing device for the new energy vehicle inverter printed circuit board. The manufacturing device for the new energy vehicle inverter printed circuit board comprises a base (1), a back plate (2) is fixedly provided on the top rear side of the base (1), and a mounting plate (3) is fixedly provided on the front bottom of the back plate (2); A driving mechanism (4) is provided on the mounting plate (3); a lifting mechanism (5) is provided on the outer side of the driving mechanism (4); a supporting mechanism (6) is provided on the top of the lifting mechanism (5); and a limiting mechanism (7) is provided on the outer side of the supporting mechanism (6); The driving mechanism (4) includes a driving screw (41), a driving motor (42), a driving gear (43), a magnet (44), a valve (45), a first air hole (46) and a second air hole (47); The driving screw (41) passes through the mounting plate (3) and is rotatably connected to the mounting plate (3) via a bearing. The driving motor (42) is fixedly arranged on the left side of the bottom of the mounting plate (3). Two driving gears (43) are provided. The driving screw (41) and the driving motor (42) are connected to each other via the two driving gears (43). The magnet (44) is fixedly arranged on the top of the driving screw (41). The valve (45) is fixedly arranged on the top of the inner side of the driving screw (41). The first air hole (46) and the second air hole (47) are sequentially opened on the front of the driving screw (41) from top to bottom.

2. The method for manufacturing a new energy vehicle inverter printed circuit board according to claim 1, characterized in that: The lifting mechanism (5) comprises a blocking sleeve (51), a lifting plate (52), a guide rod (53), a telescopic rod (54) and a spring (55).

3. The method for manufacturing a new energy vehicle inverter printed circuit board according to claim 2, characterized in that: The blocking sleeve (51) is sleeved on the outside of the driving screw (41) and is connected to the driving screw (41) through a reciprocating thread. The lifting plate (52) is fixedly sleeved on the outside of the blocking sleeve (51). Two guide rods (53) are provided. The two guide rods (53) are respectively slid through the top two sides of the lifting plate (52) and are fixedly connected to the mounting plate (3). Two telescopic rods (54) and two springs (55) are respectively sleeved on the outside of the two telescopic rods (54).

4. The method for manufacturing a new energy vehicle inverter printed circuit board according to claim 3, characterized in that: The supporting mechanism (6) comprises a supporting seat (61), an operating channel (62), a positioning groove (63), an adsorption channel (64), an adsorption chamber (65), an air inlet channel (66) and an air exhaust channel (67).

5. The method for manufacturing a new energy vehicle inverter printed circuit board according to claim 4, characterized in that: The supporting seat (61) is fixedly arranged at the top end of the two telescopic rods (54); the operating channel (62) is arranged through the center of the bottom of the supporting seat (61); the positioning groove (63) is opened at the top of the supporting seat (61) and is connected to the operating channel (62); a plurality of adsorption channels (64) are provided, and the plurality of adsorption channels (64) are evenly opened at the bottom inside the positioning groove (63); the adsorption chamber (65) is opened inside the supporting seat (61) and is connected to the plurality of adsorption channels (64); the air intake channel (66) is opened on the left side of the supporting seat (61); the air exhaust channel (67) is opened on the right side of the supporting seat (61); and the air intake channel (66) and the air exhaust channel (67) are both connected to the adsorption chamber (65).

6. The method for manufacturing a new energy vehicle inverter printed circuit board according to claim 5, characterized in that: The limiting mechanism (7) comprises an outer frame (71), an air inlet groove (72), an air exhaust groove (73), a sealing cover (74), a first flow guide pipe (75), an air pump (76), a second flow guide pipe (77) and an annular top plate (78).

7. The method for manufacturing a new energy vehicle inverter printed circuit board according to claim 6, characterized in that: The annular top plate (78) is fixedly arranged on the top ends of the two guide rods (53); the outer frame (71) is fixedly arranged on the top end of the annular top plate (78) and is slidably sleeved on the outside of the support seat (61); the air inlet groove (72) is opened on the left side of the outer frame (71); the air exhaust groove (73) is opened on the right side of the outer frame (71); the sealing cover (74) is located outside the air exhaust groove (73) and is fixedly connected to the outer frame (71); the first guide pipe (75) is fixedly passed through the right side of the sealing cover (74); the air pump (76) is fixedly connected to the end of the first guide pipe (75); one end of the second guide pipe (77) is fixedly connected to the output end of the air pump (76) and the other end is connected to the bottom end of the driving screw (41) through a rotary joint.

8. The method for manufacturing a new energy vehicle inverter printed circuit board according to claim 7, characterized in that: The manufacturing method specifically comprises the following steps: S1. Place the circuit board with the back-drilled hole into the inner side of the positioning groove (63). At this time, the operating channel (62) is located directly below the back-drilled hole of the circuit board. Then, start the driving motor (42) and the air pump (76). After the driving motor (42) is started, the driving screw (41) is driven to rotate through the driving gear (43). When the driving screw (41) rotates, the lifting plate (52) is driven to descend through the blocking sleeve (51). When the lifting plate (52) descends, the supporting seat (61) is driven to descend through the telescopic rod (54), thereby causing the circuit board to descend synchronously. The driving screw (41) and the magnet (44) are relatively elevated inside the operating channel (62). S2, after the air pump (76) is started, air is sucked in through the first guide tube (75), the sealing cover (74) and the exhaust groove (73), and then input into the driving screw (41) through the second guide tube (77). The airflow entering the driving screw (41) is blocked by the valve (45) and can only be output through the second air hole (47); S3. When the descending distance of the blocking sleeve (51) reaches the first threshold value, driven by the supporting seat (61), the air inlet channel (66) is connected to the air inlet groove (72), and the exhaust channel (67) is connected to the exhaust groove (73). The air pump (76) starts to suck the air inside the adsorption chamber (65) through the first guide pipe (75), the sealing cover (74), the exhaust groove (73) and the exhaust channel (67), thereby generating a negative pressure inside the adsorption chamber (65). The negative pressure is transmitted to the interior of the positioning groove (63) through the adsorption channel (64), thereby adsorbing and fixing the circuit board to be processed; S4. When the blocking sleeve (51) descends a distance that reaches a second threshold, the bottom of the support seat (61) contacts the top of the annular top plate (78). At this time, the circuit board arrives at the ink application station, and the magnet (44) passes through the back-drilled hole on the circuit board and extends out of the back-drilled hole. Subsequently, as the blocking sleeve (51) continues to descend, the support seat (61) is blocked by the annular top plate (78), so the support seat (61) cannot continue to descend, and the telescopic rod (54) and the spring (55) are continuously stretched. S5. When the descending distance of the blocking sleeve (51) reaches the third threshold value, the blocking sleeve (51) moves to the outside of the second air hole (47) and blocks the second air hole (47). At this time, the airflow inside the driving screw (41) can no longer be discharged through the second air hole (47), and can only break the valve (45) and then be discharged through the first air hole (46). The airflow discharged from the first air hole (46) is continuously output upward and downward along the inner wall of the operating channel (62) and the inner wall of the back-drilled hole under the constraints of the operating channel (62) and the back-drilled hole, thereby forming an airflow wall outside the magnet (44); S6. At this time, a technician applies solder resist ink mixed with reducing iron powder to the top of the circuit board manually or through other equipment. The magnet (44) attracts the solder resist ink mixed with reducing iron powder, causing it to flow to the opening of the back-drilled hole. At the same time, due to the obstruction of the air flow wall, the ink cannot flow into the back-drilled hole. S7. When the descending distance of the blocking sleeve (51) reaches the fourth threshold value, the blocking sleeve (51) moves to the lowest end of the reciprocating thread on the outside of the driving screw (41). Subsequently, as the driving screw (41) rotates, the blocking sleeve (51) begins to rise along the driving screw (41). The continuously rising blocking sleeve (51) begins to drive the supporting mechanism (6) to reset. After the supporting mechanism (6) is completely reset, the circuit board can be removed from the inside of the positioning groove (63).

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