New energy vehicle motor controller circuit board manufacturing equipment and circuit board manufacturing process

Abstract

The invention relates to the technical field of circuit board manufacturing, and discloses new energy vehicle motor controller circuit board manufacturing equipment and a circuit board manufacturing process. The equipment uses a chain conveyor to convey easily detachable circuit board brackets and circuit boards, and operates in a non-stop cycle, thereby greatly improving the efficiency of circuit board etching production. An etching nozzle is arranged below the circuit board, and etching liquid sprays the surface of the circuit board from bottom to top. The corroded copper foil residues fall directly into a first recovery tank together with the etching liquid, thereby preventing the etching liquid from being retained and accumulated in a depressed area formed during the etching process. The circuit board is then cleaned and dried in time by a spray washing mechanism, thereby preventing secondary corrosion on the surface of the circuit board.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board manufacturing, and in particular to new energy vehicle motor controller circuit board manufacturing equipment and a circuit board manufacturing process. Background Art

[0002] In the control system of new energy vehicles, circuit boards are indispensable electrical components. The manufacturing process of circuit boards is very complicated, including cutting, drilling, copper deposition, electrical diagrams, etching, solder mask, tin spraying, edge cutting, and flying test. Etching is to first pre-plate a layer of lead-tin anti-corrosion layer on the copper foil part of the outer layer of the circuit board that needs to be retained, that is, the graphic part of the circuit, and then chemically corrode the remaining copper foil. Spraying is the most commonly used method. It sucks the etching liquid into the nozzle by pressure and then sprays it onto the surface of the circuit board. The etching liquid corrodes the unnecessary copper foil. Ammonia etchant is a commonly used chemical etching liquid. It does not react chemically with tin or lead-tin. During etching, fresh solution needs to be in contact with the etching surface to continuously provide the ammonia (NH3) required for the reaction, thereby corroding the circuit board.

[0003] In the process of etching the circuit board in the prior art, since the circuit board has a certain thickness, the etching process is gradual. During the etching process, a recessed area will be formed on the surface of the substrate, and the etching liquid after the reaction will be retained in the recessed area and on the surface of the circuit board, making it difficult for the fresh etching liquid sprayed thereafter to enter the recessed area and contact the surface of the circuit board, and thus it is difficult to continue to corrode the circuit board, which seriously slows down the etching efficiency. After the etching efficiency slows down, the etching liquid retained in the groove will not only corrode downward, but also attack the unprotected copper layer on the side wall of the groove, causing side corrosion. The longer the circuit board surface is in contact with the etching liquid, the more serious the side corrosion is, thereby reducing the etching accuracy of the circuit board; in the prior art, the loading and disassembly of the circuit board is often cumbersome and requires downtime. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a new energy vehicle motor controller circuit board manufacturing equipment, which has the advantages that the etching liquid will directly fall during the etching process and will not be retained in the recessed area, and the circuit board can be cleaned and dried in time after etching. It solves the problem that the etching liquid will be retained in the recessed area and surface of the circuit board during the etching process, causing serious side corrosion, and the problem of stopping the machine to load and disassemble the circuit board, greatly improving the etching accuracy and production efficiency of the circuit board.

[0006] (II) Technical solution

[0007] In order to solve the technical problem that the etching liquid will be retained in the recessed area of ​​the circuit board and cause serious side corrosion on the surface during the above etching process, the present invention provides the following technical solutions:

[0008] A new energy vehicle motor controller circuit board manufacturing device comprises a base, wherein the upper surface of the base is provided with an erosion mechanism and a spray washing mechanism, wherein the erosion mechanism comprises an etching nozzle for spraying etching liquid, and the spray washing mechanism comprises a cleaning nozzle for spraying cleaning liquid and a drying device for drying the cleaning liquid, wherein the upper surface of the base is provided with a pillar, and a chain plate conveyor is provided at the top of the pillar, wherein the chain plate conveyor comprises a chain plate, and a connecting seat is provided on the surface of the chain plate, wherein a circuit board bracket is provided at the bottom of the connecting seat at the lower end during the operation of the chain plate conveyor, wherein the circuit board bracket and the connecting seat are detachably connected, and a circuit board is provided inside the circuit board bracket.

[0009] Preferably, fixed clamps are respectively provided on both sides of the lower end surface of the circuit board bracket, a limiting plate is provided at one end of the fixed clamp, a movable clamp is provided at the upper end of the fixed clamp, a spring is provided between the upper surface of the movable clamp and the inner top surface of the circuit board bracket, and the circuit board is clamped between the upper surface of the fixed clamp and the lower surface of the movable clamp.

[0010] Preferably, the connecting seats are grouped in pairs and the connecting seat combinations formed by the connecting seats are evenly distributed on the surface of the chain plate, the top surface of the circuit board bracket is provided with a connecting piece, the connecting piece matches the contour and size of the connecting seat, and the distance between the center positions of adjacent working areas of the etching nozzle, the annular tube and the cleaning nozzle is equal to the distance between the center positions of adjacent connecting seat combinations.

[0011] Preferably, a first recovery tank is provided below the spraying area of ​​the etching nozzle, and a first filter screen is provided inside the first recovery tank.

[0012] Preferably, a second recovery tank is provided below the working area of ​​the cleaning nozzle and the drying device, and a second filter screen is provided inside the second recovery tank.

[0013] Preferably, supporting side plates are respectively provided on both sides of the second recovery tank, and the drying devices are respectively fixedly installed on the surfaces of the supporting side plates. The drying devices include a blower and a heating wire, and the heating wire is respectively provided on one side close to the circuit board.

[0014] Preferably, the etching mechanism also includes an etching liquid storage box and a first pipe, the etching nozzle and the etching liquid storage box are connected by the first pipe, a U-shaped groove is provided on the side wall surface of the first recovery tank close to the etching liquid storage box, the first pipe passes through the U-shaped groove and the U-shaped groove supports the first pipe.

[0015] Preferably, the spraying mechanism further comprises a cleaning liquid storage tank, a second pipe and an annular pipe, the cleaning nozzles are neatly arranged on one side of the surface of the annular pipe, and the annular pipe and the cleaning liquid storage tank are connected via the second pipe.

[0016] A new energy vehicle motor controller circuit board manufacturing process, the manufacturing process uses a new energy vehicle motor controller circuit board manufacturing equipment as described in any one of claims 1-8.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention provides a new energy vehicle motor controller circuit board manufacturing device, which has the following beneficial effects:

[0019] 1. The new energy vehicle motor controller circuit board manufacturing equipment conveys the circuit board bracket through a chain conveyor, the circuit board is installed inside the circuit board bracket, and the circuit board bracket and the circuit board are easy to disassemble and replace. The etching nozzle is arranged below the circuit board, and the etching liquid sprayed from the etching nozzle sprays the circuit board surface from bottom to top. The copper foil of the part of the circuit board not covered with the lead-tin anti-corrosion layer is gradually corroded, and the corroded copper foil residue flows down with the etching liquid and directly falls into the first recovery tank for secondary utilization. The copper foil residue is filtered out and separated by the first filter, which is convenient for cleaning. During the etching process, the etching liquid will not be retained in the depressed area formed during the corrosion process, which can effectively reduce the degree of side corrosion and improve the etching accuracy of the circuit board.

[0020] 2. The new energy vehicle motor controller circuit board manufacturing equipment cleans the etched circuit board in time by setting a spray cleaning mechanism, washes away the small amount of etching liquid remaining on the surface of the circuit board, avoids secondary corrosion on the surface of the circuit board, and dries the cleaned circuit board by setting a drying device to facilitate subsequent processing of the circuit board.

[0021] 3. The chain conveyor is made of chain plates connected in a ring shape. When it is running, it can not only allow the circuit boards to enter each process position in sequence, but also facilitate automatic or manual loading and disassembly of circuit boards by operators, without stopping the machine and cyclically operating, greatly improving the efficiency of circuit board etching production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a front view structural schematic diagram of the present invention;

[0024] Figure 3 It is a schematic diagram of the circuit board bracket structure of the present invention;

[0025] Figure 4A cross-sectional view of a circuit board during a spray cleaning mechanism and a spray cleaning process of the present invention;

[0026] Figure 5 A cross-sectional view of a circuit board during a drying process and a drying mechanism of the present invention;

[0027] Figure 6 It is a schematic diagram of the circuit board structure of the spray etching mechanism and the spray etching process of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the spray washing mechanism of the present invention.

[0029] In the figure: 1. base; 2. etching nozzle; 3. annular pipe; 4. cleaning nozzle; 5. drying device; 6. pillar; 7. chain plate; 8. connecting seat; 9. circuit board bracket; 10. connecting piece; 11. circuit board; 12. fixed splint; 13. limit plate; 14. movable splint; 15. spring; 16. first recovery tank; 17. first filter; 18. second recovery tank; 19. second filter; 20. supporting side plate; 21. etching liquid storage box; 22. first pipeline; 23. cleaning liquid storage box; 24. second pipeline; 25. blower; 26. heating wire. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figure 1-7 A new energy vehicle motor controller circuit board manufacturing equipment includes a base 1, an upper surface of the base 1 is provided with an erosion mechanism and a spray washing mechanism, the erosion mechanism includes an etching nozzle 2 for spraying etching liquid, the spray washing mechanism includes a cleaning nozzle 4 for spraying cleaning liquid and a drying device 5 for drying the cleaning liquid, a pillar 6 is provided on the upper surface of the base 1, a chain plate conveyor is provided at the top of the pillar 6, the chain plate conveyor includes a chain plate 7, a connecting seat 8 is provided on the surface of the chain plate 7, a circuit board bracket 9 is provided at the bottom of the connecting seat 8 at the lower end during the operation of the chain plate conveyor, the circuit board bracket 9 and the connecting seat 8 are detachably connected, a circuit board 11 is provided inside the circuit board bracket 9, and the chain plate conveyor operates intermittently to intermittently convey the circuit board 11 to the working area of ​​the etching nozzle 2, the cleaning nozzle 4 and the drying device 5.

[0032] Furthermore, fixed clamping plates 12 are respectively arranged on both sides of the lower end surface of the circuit board bracket 9, a limit plate 13 is arranged at one end of the fixed clamping plate 12, and a movable clamping plate 14 is arranged on the upper end of the fixed clamping plate 12. The surfaces of the fixed clamping plate 12, the limit plate 13 and the movable clamping plate 14 are all provided with a rubber layer, which can not only protect the circuit board 11 and avoid wear on the surface of the circuit board 11, but also increase the friction force to prevent the circuit board 11 from slipping during the process of being sprayed by the spraying mechanism and being sprayed and dried by the spraying mechanism. The upper surface of the movable clamping plate 14 is in contact with the circuit board 11. A spring 15 is provided between the inner top surfaces of the road plate bracket 9, and the circuit board 11 is clamped between the upper surface of the fixed clamp plate 12 and the lower surface of the movable clamp plate 14, so that under the elastic action of the spring 15, circuit boards of different thicknesses can be clamped between the fixed clamp plate 12 and the movable clamp plate 14, and the limit plate 13 is against one end of the circuit board 11 to prevent the circuit board 11 from slipping, and the sides of the fixed clamp plate 12 and the movable clamp plate 14 are provided with rounded corners to facilitate and quickly insert the circuit board 11 between the fixed clamp plate 12 and the movable clamp plate 14.

[0033] Furthermore, the connecting seats 8 are grouped in pairs and the connecting seat combination formed by the connecting seats 8 is evenly distributed on the surface of the chain plate 7. A connecting piece 10 is provided on the top surface of the circuit board bracket 9. The connecting piece 10 matches the contour and size of the connecting seat 8, so that the circuit board bracket 9 is installed at the bottom of the connecting seat 8 through the connecting piece 10, which is easy to disassemble and replace. The distance between the center positions of adjacent working areas of the etching nozzle 2, the annular tube 3 and the cleaning nozzle 4 is equal to the distance between the center positions of adjacent connecting seat combinations. When the chain conveyor is running, the chain conveyor will pause when the connecting seat 8 on the surface of the chain plate 7 transfers the circuit board 11 to the working area of ​​the etching nozzle 2, the cleaning nozzle 4 and the drying device 5. During this interval, the etching nozzle 2, the cleaning nozzle 4 and the drying device 5 can respectively complete corresponding work on the circuit board 11 transferred to their respective working areas, forming a matching work line to improve the working efficiency of the equipment.

[0034] Furthermore, a first recovery tank 16 is provided below the spraying area of ​​the etching nozzle 2, and a first filter screen 17 is provided inside the first recovery tank 16. After the etching liquid sprayed by the etching nozzle 2 etches the circuit board 11, the copper foil of the part of the circuit board 11 not covered with the lead-tin anti-corrosion layer is gradually corroded, and the corroded copper foil residue flows down with the etching liquid, and will not be retained in the depression area formed during the corrosion process, but directly falls into the first recovery tank 16. The copper foil residue is filtered out and separated by the first filter screen 17, which is convenient for cleaning. The acted etching liquid is recovered by the first recovery tank 16 and can be discharged from the first liquid outlet provided at the bottom end of one side of the first recovery tank 16, and reused after treatment.

[0035] Furthermore, a second recovery tank 18 is arranged below the working area of ​​the cleaning nozzle 4 and the drying device 5, and a second filter screen 19 is arranged inside the second recovery tank 18. The cleaning liquid sprayed by the cleaning nozzle 4 sprays the circuit board 11 and then falls off, and the circuit board 11 continues to be conveyed to the working area of ​​the drying device 5. During the process of the drying device 5 drying the moisture on the surface of the circuit board 11, the residual moisture on the surface of the circuit board 11 may fall off, and the cleaning liquid all falls into the second recovery tank 18, and can be discharged from the second liquid outlet arranged at the bottom end of one side of the second recovery tank 18 for secondary utilization, and the copper foil residue flushed out is filtered out and separated by the second filter screen 19, which is convenient for cleaning.

[0036] Furthermore, supporting side panels 20 are respectively provided on both sides of the second recovery tank 18, and the drying devices 5 are respectively fixedly installed on the surfaces of the supporting side panels 20. The drying devices 5 include a blower 25 and a heating wire 26. The heating wire 26 is respectively provided on one side close to the circuit board 11. When the circuit board 11 is conveyed to the working area of ​​the drying device 5, the blower 25 blows the heat emitted by the heating wire 26 to the surface of the circuit board 11 to dry it.

[0037] Furthermore, the etching mechanism also includes an etching liquid storage box 21 and a first pipe 22. The etching nozzle 2 and the etching liquid storage box 21 are connected by the first pipe 22. A first booster pump is arranged on the surface of the first pipe 22. Under the action of the first booster pump, the etching liquid inside the etching liquid storage box 21 is pumped into the first pipe 22 and finally sprayed out from the etching nozzle 2 to etch the circuit board 11. A U-shaped groove is provided on the side wall surface of the first recovery tank 16 close to the etching liquid storage box 21. The first pipe 22 passes through the U-shaped groove and the U-shaped groove supports the first pipe 22.

[0038] Furthermore, the spraying mechanism also includes a cleaning liquid storage tank 23, a second pipe 24 and an annular tube 3. The cleaning nozzles 4 are neatly arranged on one side of the surface of the annular tube 3. The annular tube 3 and the cleaning liquid storage tank 23 are connected by the second pipe 24. A second boosting pump is arranged on the surface of the second pipe 24. Under the action of the second boosting pump, the cleaning liquid inside the cleaning liquid storage tank 23 is pumped into the second pipe 24 and the annular tube 3 in turn, and finally sprayed out from the cleaning nozzle 4 to spray the etched circuit board 11.

[0039] Working principle: When in use, in the gap where the chain conveyor is suspended, select the connection seat 8 on the lower surface of the chain plate 7 close to one end of the etching nozzle 2, install the circuit board bracket 9 at the bottom of the connection seat 8 through the connecting piece 10, and then insert a circuit board 11 to be etched between the fixed clamping plate 12 and the movable clamping plate 14, and the limit plate 13 is against one end of the circuit board 11. The rubber layer on the surface of the fixed clamping plate 12, the limit plate 13 and the movable clamping plate 14 can protect the circuit board 11 and avoid wear on the surface of the circuit board 11, and can also increase the friction force to prevent the circuit board 11 from slipping during the process of being sprayed by the spraying mechanism and sprayed and dried by the spraying mechanism;

[0040] The chain conveyor continues to operate to convey the circuit board 11. When the circuit board 11 is conveyed to the working area of ​​the etching nozzle 2, the chain conveyor stops operating. Under the action of the first booster pump, the etching liquid in the etching liquid storage box 21 is pumped into the first pipe 22, and finally sprayed out from the etching nozzle 2 to etch the circuit board 11. After the etching liquid sprayed from the etching nozzle 2 sprays the circuit board 11, the copper foil of the part of the circuit board 11 not covered with the lead-tin anti-corrosion layer is gradually corroded. The corroded copper foil residue flows down with the etching liquid and falls into the first recovery tank 16. The copper foil residue is filtered out and separated by the first filter screen 17 for easy cleaning. The acted etching liquid is recovered by the first recovery tank 16 and can be discharged from the first liquid outlet set at the bottom end of one side of the first recovery tank 16 for secondary use after treatment.

[0041] After etching is completed, the chain conveyor continues to operate to convey the circuit board 11. When the circuit board 11 is conveyed to the working area of ​​the cleaning nozzle 4, the chain conveyor stops operating. Under the action of the second booster pump, the cleaning liquid in the cleaning liquid storage box 23 is pumped into the second pipe 24 and the annular pipe 3 in sequence, and finally sprayed out from the cleaning nozzle 4 to spray the etched circuit board 11, and the cleaning liquid falls into the second recovery tank 18. After cleaning, the chain conveyor continues to operate to convey the circuit board 11. When the circuit board 11 is conveyed to the drying When the working area of ​​the drying device 5 is in operation, the chain conveyor stops running, and the blower 25 blows the heat emitted by the electric heating wire 26 to the surface of the circuit board 11 to dry it. During the process of the hot air drying the moisture on the surface of the circuit board 11, the residual moisture on the surface of the circuit board 11 falls off and falls into the second recovery tank 18. The cleaning liquid that falls into the second recovery tank 18 during the cleaning and drying process can be discharged from the second liquid outlet set at the bottom end of one side of the second recovery tank 18 for secondary use, and the copper foil residue washed out is filtered out and separated by the second filter screen 19, which is convenient for cleaning;

[0042] After drying is completed, the chain conveyor continues to operate to transport the circuit board 11, so that the circuit board 11 moves out of the encirclement area of ​​the supporting side plate 20. When the chain conveyor is suspended again, the circuit board bracket 9 and the circuit board 11 can be removed respectively to complete the etching of a circuit board. The removed circuit board bracket 9 can be installed at the starting end of the chain conveyor again, and a new circuit board 11 to be etched can be inserted, so that the equipment can continue to process the new circuit board 11 to complete the etching.

[0043] 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 new energy vehicle motor controller circuit board manufacturing device, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with an erosion mechanism and a spray cleaning mechanism, the erosion mechanism comprises an etching nozzle (2) for spraying etching liquid, the upper surface of the base (1) is provided with a pillar (6), a chain plate conveyor is provided at the top of the pillar (6), the chain plate conveyor comprises a chain plate (7), a connecting seat (8) is provided on the surface of the chain plate (7), a circuit board bracket (9) is detachably connected to the connecting seat (8), and a circuit board (11) is provided inside the circuit board bracket (9); The lower end surface of the circuit board bracket (9) is provided with fixed clamping plates (12) on both sides, a limit plate (13) is provided at one end of the fixed clamping plate (12), a movable clamping plate (14) is provided at the upper end of the fixed clamping plate (12), a spring (15) is provided between the upper surface of the movable clamping plate (14) and the inner top surface of the circuit board bracket (9), and the circuit board (11) is clamped between the upper surface of the fixed clamping plate (12) and the lower surface of the movable clamping plate (14); The surfaces of the fixed clamping plate (12), the limiting plate (13) and the movable clamping plate (14) are provided with a rubber layer; The connecting seats (8) are arranged in groups of two and the connecting seats (8) form a connecting seat combination that is evenly distributed on the surface of the chain plate (7); a connecting piece (10) is provided on the top surface of the circuit board bracket (9); the connecting piece (10) matches the contour and size of the connecting seat (8); the distance between the center positions of adjacent working areas of the etching nozzle (2), the annular tube (3) and the cleaning nozzle (4) is equal to the distance between the center positions of adjacent connecting seat combinations; A second recovery tank (18) is provided below the working area of ​​the cleaning nozzle (4) and the drying device (5), and a second filter screen (19) is provided inside the second recovery tank (18); Support side plates (20) are respectively arranged on both sides of the second recovery tank (18), and the drying device (5) is respectively fixedly mounted on the surface of the support side plates (20), and the drying device (5) comprises a blower (25) and a heating wire (26), and the heating wire (26) is respectively arranged on a side close to the circuit board (11).

2. The new energy vehicle motor controller circuit board manufacturing equipment according to claim 1 is characterized in that: A first recovery tank (16) is arranged below the spraying area of ​​the etching nozzle (2), and a first filter screen (17) is arranged inside the first recovery tank (16).

3. The new energy vehicle motor controller circuit board manufacturing equipment according to claim 2 is characterized in that: The etching mechanism further comprises an etching liquid storage box (21) and a first pipe (22); the etching nozzle (2) and the etching liquid storage box (21) are connected via the first pipe (22); a U-shaped groove is provided on the side wall surface of the first recovery tank (16) close to the etching liquid storage box (21); the first pipe (22) passes through the U-shaped groove and the U-shaped groove supports the first pipe (22).

4. The new energy vehicle motor controller circuit board manufacturing equipment according to claim 1 is characterized in that: The spray cleaning mechanism further comprises a cleaning liquid storage tank (23), a second pipe (24) and an annular pipe (3); the cleaning nozzles (4) are neatly arranged on one side of the surface of the annular pipe (3); and the annular pipe (3) and the cleaning liquid storage tank (23) are connected via the second pipe (24).

5. New energy vehicle motor controller circuit board manufacturing process, characterized by: The manufacturing process uses a new energy vehicle motor controller circuit board manufacturing device as described in any one of claims 1-4.

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