PCB tin spraying device for new energy automobile lamp

Abstract

The invention belongs to the technical field of circuit board tin spraying, and relates to a PCB tin spraying device for a new energy automobile lamp, the PCB tin spraying device comprises a tin liquid tank with a built-in heater, a rotating frame driven by an external power source is rotatably arranged on the tin liquid tank, PCB clamps are slidably arranged on the two sides of the rotating frame, and first springs are connected between the PCB clamps and the rotating frame; the tin liquid tank is connected with a supporting column, the supporting column is connected with supports, an air knife is installed between the lower portions of the supports, the upper portions of the supports are connected with a supporting plate, and the supporting column is connected with a supporting box located over the rotating frame. The PCB clamp is suitable for clamping PCBs of different sizes under the action of the first spring. The PCB clamp is opened according to the size of the PCB, it is guaranteed that the PCBs of different sizes are automatically clamped in a self-adaptive mode, the invalid moving distance is reduced, opening and closing operation accurately corresponds to the sizes of the PCBs, and therefore tin spraying can be conducted on the PCBs of different sizes, and all the steps are correlated and cooperate with one another.

Description

Technical Field

[0001] The present invention belongs to the technical field of circuit board tin spraying, and in particular, relates to a PCB tin spraying device for new energy vehicle lamps. Background Art

[0002] PCB, short for printed circuit board, is an indispensable component of modern electronic devices. For automotive lamps, whether it is traditional halogen lamps, xenon lamps or current LED lamps, they all rely on PCB boards to realize circuit wiring and component fixed installation.

[0003] PCB tinning, also known as hot air leveling, is a common PCB surface treatment process that uses hot air to blow excess solder away from the PCB surface and level the solder left on the pads and through-holes to form a uniform tin layer. This process is mainly used to protect the copper traces on the circuit board to prevent oxidation and provide good solderability for subsequent component soldering.

[0004] For example, the patent with patent publication number CN117979567A and publication date 2024-05-03 discloses a PCB board tin spraying equipment and process. The PCB board tin spraying equipment can realize a rotation cycle during the tin spraying treatment of the PCB board through the circulating tin spraying component set up, and directly feeds the material on one side and directly discharges the material on the top. However, in actual use, the above-mentioned PCB board tin spraying equipment can only be used for PCB boards of a specific size and cannot adapt to PCB boards of different sizes, which has limitations. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a PCB tin spraying device for new energy vehicle lamps that can be adjusted for PCB boards of different sizes and has strong adaptability.

[0006] The present invention provides a PCB tin spraying device for a new energy vehicle lamp, comprising a tin liquid tank with a built-in heater, a rotating frame driven by an external power source is rotatably arranged on the upper middle side of the tin liquid tank through a bearing seat, PCB board clamps are slidably arranged on both the front and rear sides of the rotating frame, and two springs are connected between the PCB board clamp and the rotating frame; support columns are connected to the four corners of the upper side of the tin liquid tank, the upper parts of the two left support columns are connected to brackets, a wind knife is installed between the lower parts of the two brackets, a support plate is connected to the upper part of the bracket, and the support plate is used to support the PCB board to be tin-sprayed, a support box located directly above the rotating frame is connected between the upper ends of the four support columns, two front and rear relative limiting clamps are slidably arranged in the support box, the front and rear two limiting clamps respectively correspond to the PCB board clamps on the front and rear sides, a wedge frame is connected to the PCB board clamp, and the two limiting clamps are connected to the sides away from each other. The abutting column suitable for squeezing the wedge frame is connected, and a driving component for driving the limiting clamp to move is provided on the support box.

[0007] Preferably, the PCB board clamps on the front and rear sides are respectively suitable for clamping the front and rear sides of the PCB board, the right part of the bracket extends toward the rotating frame, the wind knife on the bracket is close to the rotating frame, and the two support columns on the left are also connected to wind knives. The left and right wind knives are respectively located on the left and right sides of the PCB board clamp.

[0008] Preferably, it also includes a limiting clamp 2, and two limiting clamps 2 are slidably provided in the support box and are opposite to each other on the left and right. The limiting clamp 2 is perpendicular to the limiting clamp 1, and the limiting clamp 2 is suitable for cooperating with the limiting clamp 1 to limit the PCB board according to the length and width of the PCB board. The support box is provided with a driving component 2 for driving the limiting clamp 1 to move.

[0009] Preferably, a blanking plate is also included, and the lower part of the two limit clamps is provided with a guide block, and a blanking plate for supporting the PCB board located in the support box is slidably provided on the guide block, and a spring 2 is connected between the blanking plate and the guide block at the lower part of the limit clamp, and the upper side of the blanking plate is connected to a wedge plate that passes through the support box, and the upper end part of the wedge plate is a wedge-shaped part, and the upper side of the wedge frame is connected to a resistance rod, which is suitable for contacting and cooperating with the inner side of the wedge-shaped part on the wedge plate.

[0010] Preferably, it also includes a baffle plate, and the lower part of the limit clamp is slidably provided with a baffle plate located above the blanking plate, the baffle plate has a baffle state that is closed when the blanking plate is opened, and the baffle plate also has a blanking state that is opened when the blanking plate is closed, and the upper side of the baffle plate is connected with a transmission lever, and the lower parts of the two limit clamps are rotatably provided with an extrusion frame surrounding the transmission lever on one side away from each other, and the extrusion frame is used to extrude the transmission lever, and the upper part of the wedge plate is connected with a driving lever that runs through the extrusion frame, and the driving lever is used to push and pull the extrusion frame.

[0011] Preferably, a resistance ring is also included, and one side of the resistance column is connected with a resistance ring suitable for extruding the wedge frame, and the resistance ring is close to the wind knife.

[0012] Preferably, it also includes a support rod, a support rod is connected to the support box, an electric guide rail is installed between the support rod and the support plate and is located between the tin liquid tank and the support box, the electric guide rail extends to the left from between the tin liquid tank and the support box, and an electric clamp is installed on the slider of the electric guide rail, which clamps the PCB board released by the PCB board clamp.

[0013] Preferably, a conveyor belt is also included. The conveyor belt is installed on one side of the tin liquid tank. The conveyor belt is close to the electric clamp, and the PCB board after the tin spraying is transported by the conveyor belt.

[0014] Preferably, a driving component 1 is used to drive the two limit clamps 1 away from and towards each other, and the driving component 1 includes a bidirectional screw rod 1 rotatably arranged on the left side of the support box, and the front and rear threaded ends of the bidirectional screw rod 1 are respectively threadedly connected to two front and rear opposite transmission plates 1, and the front and rear transmission plates 1 are respectively connected to the front and rear limit clamps 1.

[0015] Preferably, the driving component 2 is used to drive the two limit clamps 2 to move away from and towards each other. The structure of the driving component 2 is the same as that of the driving component 1. The driving component 2 includes a bidirectional screw rod 2 rotatably arranged on the front side of the support box. The front and rear threaded ends of the bidirectional screw rod 2 are respectively threadedly connected to two front and rear opposite transmission plates 2. The left and right transmission plates 1 are respectively connected to the left and right limit clamps 2.

[0016] The present invention overcomes the shortcomings of the prior art and has the following beneficial effects: 1. The PCB clamp is suitable for clamping PCB boards of different sizes under the action of a spring; and the opening of the PCB clamp is performed according to the size of the PCB board, which not only ensures the adaptive automatic clamping of PCB boards of different sizes, but also reduces the invalid movement distance. The opening and closing operation accurately corresponds to the size of the PCB board, thereby adapting to the tin spraying of PCB boards of different sizes. Each step is interrelated and coordinated with each other.

[0017] 2. Both surfaces of the PCB board are unobstructed, which is convenient for the subsequent operation of attaching tin liquid to both surfaces of the PCB board; both air knives can spray tin on both sides of the PCB board clamped on the PCB board fixture; the usage methods are diverse.

[0018] 3. Adjust limit clamp 1 and limit clamp 2 according to the size of the PCB board, and on the basis of adjustability, perform automatic intermittent unloading through the unloading plate and the baffle plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an assembly schematic diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the present invention after the support box is hidden.

[0021] Figure 3 It is a schematic diagram of the ring frame and the PCB board fixture of the present invention.

[0022] Figure 4 It is a schematic diagram of the bracket, wind knife and support plate of the present invention.

[0023] Figure 5 It is a schematic diagram of the support box of the present invention.

[0024] Figure 6 It is a schematic diagram of a limiting clamp 1 of the present invention.

[0025] Figure 7 It is a schematic diagram of the wedge frame and the interference rod of the present invention.

[0026] Figure 8 It is a schematic diagram of the rear side direction of the limiting clamp 1 of the present invention.

[0027] Fig. 9 For the present invention Figure 8 Cross-sectional view of the middle limit fixture 1.

[0028] Fig.10 For the present invention Fig. 9 An enlarged schematic diagram of point A.

[0029] Fig.11 It is a rear view of the wedge plate, the baffle plate and the extrusion frame of the present invention.

[0030] Fig.12 It is a schematic diagram of the connection relationship between the interference column and the interference ring of the present invention.

[0031] Fig.13 It is a schematic diagram of the positional relationship among the abutment ring, the electric clamp and the conveyor belt of the present invention.

[0032] Fig.14 It is a schematic diagram of the electric guide rail and the electric clamp of the present invention.

[0033] Fig.15 The figure is a schematic diagram of the positional relationship among the PCB board clamp, the limiting clamp 1 and the abutment ring of the present invention.

[0034] The markings in the accompanying drawings provided by the present invention are: 1-tin liquid tank, 11-support column, 12-bracket, 13-air knife, 14-support plate, 21-rotating shaft, 22-ring frame, 23-PCB board fixture, 24-spring one, 31-support box, 32-limit fixture one, 320-guide block, 321-bidirectional screw rod one, 322-transmission plate one, 33-limit fixture two, 331-bidirectional screw rod two, 332-transmission plate two, 41-wedge frame, 42-contact column, 51-unloading plate, 511-spring two, 52-wedge plate, 521-drive lever, 53-contact rod, 54-blocking plate, 541-transmission lever, 55-extrusion frame, 6-contact ring, 71-support rod, 72-electric guide rail, 73-electric fixture, 8-conveyor belt. DETAILED DESCRIPTION

[0035] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0036] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] Embodiment: A PCB tin spraying device for new energy vehicle lamps, such as Figure 1-Figure 7As shown, it includes a tin liquid tank 1 with a built-in heater, and the heater heats the tin liquid in the tin liquid tank 1 to keep the activity of the tin liquid. A rotating frame driven by an external power source is provided on the upper middle side of the tin liquid tank 1 through a bearing seat, and three PCB board clamps 23 are provided at even intervals along the circumference of the rotating frame on both the front and rear sides of the rotating frame. Two springs 24 are connected between the PCB board clamps 23 and the rotating frame. The PCB board clamps 23 on the front and rear sides cooperate to clamp the two sides of the PCB board under the action of the springs 24, so as to be suitable for clamping PCB boards of different sizes; the power source is controlled to drive the rotating frame to rotate clockwise, and the rotating frame will drive the PCB board to rotate through the tin liquid tank 1 through the PCB board clamps 23, so that the tin liquid adheres to the board surface of the PCB board;The four corners of the upper side of the tin liquid tank 1 are connected with support columns 11, the upper parts of the two left support columns 11 are connected with brackets 12, and a wind knife 13 located above the tin liquid tank 1 is installed between the lower parts of the two brackets 12. When the PCB board is rotated out of the tin liquid tank 1, the wind knife 13 is controlled to spray tin on the board surface of the PCB board, and the excess solder is blown off the board surface and dropped back into the tin liquid tank 1, and at the same time, the solder remaining on the pad and the through hole is flattened to form a uniform tin layer. The upper part of the bracket 12 is connected with a support plate 14, and the support plate 14 is used to support the PCB board to be sprayed with tin. After the PCB board clamps 23 on the front and rear sides rotate to the front and rear sides of the support plate 14, the PCB board clamps 23 are clamped on the support plate 14. PCB board, a support box 31 located just above the rotating frame is connected between the upper ends of the four support columns 11, and the PCB board placed in the support box 31 will fall on the upper side of the support plate 14, and two front and rear opposing limit clamps 32 are slidably arranged in the support box 31. The spacing between the two limit clamps 32 is adjusted according to the size of the PCB board, and the PCB board is placed between the two limit clamps 32 in the support box 31, so that the limit clamps 32 can guide the PCB board to the center, so that the PCB in the support box 31 can fall accurately on the support plate 14, and the front and rear limit clamps 32 correspond to the PCB board clamps 23 on the front and rear sides respectively, and the PCB board clamps 23 are connected with a wedge frame 41, and the two limit clamps 32 are connected to the support plate 14. 2 are connected to the sides away from each other with a resisting column 42 suitable for squeezing the wedge frame 41. When the PCB board clamps 23 on the front and rear sides rotate to the front and rear sides of the support plate 14, the resisting column 42 will squeeze the wedge frame 41. The wedge frames 41 on the front and rear sides are subjected to force to drive the PCB board clamps 23 on the front and rear sides to move away from each other. The spring 1 24 is deformed to automatically open the PCB board clamp 23. Then the wedge frame 41 continues to rotate and will be separated from the resisting column 42. The PCB board clamps 23 on the front and rear sides will approach each other under the action of the spring 1 24 to automatically clamp the PCB board on the support plate 14, thereby realizing the functions of centering and automatic clamping, and it is performed according to the size of the PCB board, that is, when adjusting the limit clamp 1 32, The limit clamp 32 will also drive the abutment column 42 to move, changing the degree of compression of the abutment column 42 on the wedge frame 41. When the PCB is large, the distance between the front and rear PCB board clamps 23 is greater, and when the PCB is small, the distance between the front and rear PCB board clamps 23 is smaller. This can ensure that the PCB board clamp 23 automatically clamps PCB boards of different sizes adaptively, and reduce the ineffective movement distance of the PCB board clamp 23, so that the opening and closing operation of the PCB board accurately corresponds to the size of the PCB board, thereby adapting to the tin spraying operation of PCB boards of different sizes. Each step is related to each other and coordinated with each other. A driving component 1 for driving the limit clamp 32 to move is provided on the support box 31. ;

[0038] like Figure 2 and Figure 3 As shown, the rotating frame includes a rotating shaft 21 rotatably arranged on the tin liquid tank 1 and two annular frames 22 respectively connected to the front and rear ends of the rotating shaft 21. The rotating shaft 21 is driven to rotate by an external power source, and the PCB board clamp 23 is slidably arranged on the annular frame 22.

[0039] like Figure 2-Figure 4 As shown, the PCB board clamps 23 on the front and rear sides are respectively suitable for clamping the front and rear sides of the PCB board. Since the PCB board clamps 23 on the front and rear sides cooperate to clamp the two sides of the PCB board, the two board surfaces of the PCB board are not blocked, which is convenient for the subsequent operation of attaching tin liquid to the two board surfaces of the PCB board. The right part of the bracket 12 extends toward the rotating frame, and the wind knife 13 on the bracket 12 is close to the rotating frame. The two left support columns 11 are also connected to the wind knife 13. The left and right wind knives 13 are respectively located on the left and right sides of the PCB board clamp 23, so that the two wind knives 13 can spray tin on both sides of the PCB board clamped on the PCB board clamp 23.

[0040] like Figure 5 As shown, it also includes a limit clamp 33. Two limit clamps 33 are slidably provided in the support box 31 and are opposite to each other on the left and right. The limit clamp 33 is perpendicular to the limit clamp 32. The limit clamp 33 is suitable for cooperating with the limit clamp 32 to limit the PCB board according to the length and width of the PCB board, so as to further improve the accuracy of the PCB board in the support box 31 falling onto the support plate 14. A driving component 2 for driving the limit clamp 33 to move is provided on the support box 31.

[0041] like Figure 7-Figure 10As shown, it also includes a blanking plate 51, and the lower parts of the two limiting clamps 32 are each provided with a guide block 320. The blanking plate 51 for supporting the PCB board in the support box 31 is slidably provided on the guide block 320. The PCB board placed between the two limiting clamps 32 will first fall between the blanking plate 51, so that the PCB board can be placed in advance without deliberately waiting for the PCB board clamp 23 to rotate and open before placing it. The blanking plate 51 and the guide block at the lower part of the limiting clamp 32 A spring 511 is connected between the two ends of the support plate 14 and the support plate 14, and a wedge-shaped plate 52 is connected to the upper side of the unloading plate 51, and the upper end of the wedge-shaped plate 52 is a wedge-shaped portion. The upper side of the wedge-shaped frame 41 is connected to a contact rod 53, and the contact rod 53 is suitable for contacting and cooperating with the inner side of the wedge-shaped portion on the wedge-shaped plate 52. In the process of the PCB boards on the front and rear sides rotating to the front and rear sides of the support plate 14, the contact column 42 will first squeeze the wedge frame 41, so that the wedge The frame 41 drives the PCB board clamp 23 to move and open, and then the abutting rods 53 on the front and rear sides respectively squeeze the inner sides of the wedge-shaped parts on the front and rear wedge-shaped plates 52, and the front and rear wedge-shaped plates 52 are forced to move outward and drive the two blanking plates 51 to move away from each other, so that after the PCB board clamp 23 is in place and opened, the PCB board pre-placed in the supporting box 31 is automatically and synchronously discharged onto the supporting plate 14, with high automation and synchronization; and when the PCB board clamp 23 clamps the PCB board and rotates to perform the tin spraying operation, the abutting rod 53 will rotate to disengage from the wedge-shaped plate 52, and the two blanking plates 51 will be reset close to each other under the action of the spring 2 511, so as to facilitate the next operation of supporting the PCB board; in addition, even if the distance between the two limit clamps 32 is adjusted, the limit clamp 32 will drive the blanking plate 51 to move synchronously to ensure the supporting effect on the PCB board, and similarly, the wedge-shaped plate 52 will also move synchronously to ensure the squeezing by the abutting rod 53.

[0042] like Figure 7-Figure 11As shown, it also includes a baffle plate 54, and the lower part of the limiting clamp 32 is slidably provided with a baffle plate 54 located above the blanking plate 51. The baffle plate 54 has a baffle state that is closed when the blanking plate 51 is opened, and the baffle plate 54 also has a blanking state that is opened when the blanking plate 51 is closed. The upper side of the baffle plate 54 is connected to a transmission lever 541, and the lower parts of the two limiting clamps 32 are both rotatably provided with an extrusion frame 55 around the transmission lever 541 on one side away from each other. The extrusion frame 55 is used to extrude the transmission lever 541, and the upper part of the wedge plate 52 is connected to a driving lever 521 that runs through the extrusion frame 55, and the driving lever 521 is used for pushing and pulling the extrusion Frame 55, when the two blanking plates 51 are opened away from each other, the PCB board in the support box 31 will fall onto the support plate 14, and the blanking plate 51 will push and pull the extrusion frame 55 to swing by the driving lever 521, and the extrusion frame 55 will squeeze the transmission lever 541, and the front and rear two transmission levers 541 are respectively driven by the force to drive the front and rear two baffle plates 54 to move closer to each other to block the upper PCB board, so that multiple PCB boards with tin spraying can be placed in the support box 31, and a single PCB board can be intermittently discharged by alternating opening and closing of the baffle plate 54 and the blanking plate 51, and it is automatically triggered when the PCB board fixture 23 is in place, thereby improving the working efficiency of tin spraying of PCB boards.

[0043] like Fig.12 and Fig.15 As shown, a resistance ring 6 is also included. One side of the resistance column 42 is connected to a resistance ring 6 suitable for squeezing the wedge frame 41. The resistance ring 6 is close to the wind knife 13. After the PCB board fixture 23 drives the PCB board to rotate out of the tin liquid tank 1 and the wind knife 13 completes the tin spraying treatment on the PCB board, the PCB board continues to rotate to drive the wedge frame 41 to rotate and be squeezed by the resistance ring 6, so that the PCB board is automatically released after the tin spraying treatment is completed. At this time, the safety personnel can easily remove the PCB board that has been treated with tin spraying.

[0044] like Figure 1 , Fig.13 and Fig.14As shown, it also includes a support rod 71, a support box 31 is connected to the support rod 71, an electric guide rail 72 is installed between the support rod 71 and the support plate 14, and the electric guide rail 72 extends to the left from between the tin liquid tank 1 and the support box 31. An electric clamp 73 is installed on the slider of the electric guide rail 72, and the electric clamp 73 clamps the PCB board released by the PCB board clamp 23. In the process of the PCB board clamp 23 driving the PCB board to rotate out of the tin liquid tank 1, the uppermost end of the PCB board will move to the electric clamp 73 (it should be noted that: controlling the electric guide rail 72 can adjust the position of the electric clamp 73), and at the same time the wedge frame 41 is squeezed by the resistance ring 6, and the PCB board clamp 23 will release the PCB board. At this time, the electric clamp 73 is controlled to clamp the PCB board, and then the electric guide rail 72 is controlled to drive the electric clamp 73 to drive the PCB board to move left, so as to facilitate the transfer of the PCB board after the tin spraying, and the degree of automation is high.

[0045] like Fig.13 As shown, a conveyor belt 8 is also included. A conveyor belt 8 is installed on one side of the tin liquid tank 1 (in order to simplify the drawings and highlight the key points, the conveyor belt 8 in the drawings is only partially illustrated). The conveyor belt 8 is close to the electric clamp 73, and the conveyor belt 8 conveys the PCB board that has been sprayed with tin. After the electric clamp 73 moves to the left to take out the PCB board, the safety personnel cooperate to remove the PCB board and place it on the conveyor belt 8 to send it to the subsequent processing process, eliminating the cumbersome stacking and then transferring steps.

[0046] like Figure 5 and Figure 6 As shown, the driving component 1 is used to drive the two limit clamps 32 to move away from and towards each other. The driving component 1 includes a bidirectional screw rod 321 rotatably arranged on the left side of the support box 31. The front and rear threaded ends of the bidirectional screw rod 321 are respectively threadedly connected to two front and rear opposite transmission plates 322. The front and rear transmission plates 322 are respectively connected to the front and rear limit clamps 32. The bidirectional screw rod 321 is rotated to make the bidirectional screw rod 321 drive the two limit clamps 32 to move respectively through the two transmission plates 322, so as to adjust the distance between the two limit clamps 32, and after the adjustment is completed, the self-locking function is realized through the thread to increase stability.

[0047] like Figure 5As shown, the driving component 2 is used to drive the two limit clamps 2 33 to move away from and towards each other. In the present embodiment, the structure of the driving component 2 is the same as that of the driving component 1. Specifically, the driving component 2 includes a bidirectional screw rod 2 331 rotatably arranged on the front side of the supporting box 31. The left and right threaded ends of the bidirectional screw rod 2 331 are respectively threadedly connected to two left and right opposite transmission plates 2 332. The left and right transmission plates 1 322 are respectively connected to the left and right limit clamps 2 33. The principle of the driving component 2 is the same as that of the driving component 1. Those skilled in the art can easily understand and implement the scheme after viewing the present invention, and will not be further elaborated here.

[0048] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. They only express the preferred implementation modes of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention.

[0049] It should be pointed out that, for ordinary technicians in this field, several modifications, increases and decreases in quantity, improvements and substitutions can be made without departing from the concept of the present invention. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

Claims

1. A PCB tin spraying device for new energy vehicle lamps, characterized in that: The invention comprises a tin liquid tank (1) with a built-in heater, a rotating frame driven by an external power source being rotatably provided on the tin liquid tank (1), PCB board clamps (23) being slidably provided on both sides of the rotating frame, and a spring (24) being connected between the PCB board clamp (23) and the rotating frame; a support column (11) being connected to the tin liquid tank (1), a bracket (12) being connected to the support column (11), a wind knife (13) being installed between the lower part of the bracket (12), a support plate (14) being connected to the upper part of the bracket (12), and the support column (11) A support box (31) located just above the rotating frame is connected to the upper portion, two opposing limiting clamps (32) are slidably arranged in the support box (31), the two limiting clamps (32) respectively corresponding to the PCB board clamps (23) on both sides, a wedge frame (41) is connected to the PCB board clamp (23), and the two limiting clamps (32) are connected to the sides away from each other with a resisting column (42) suitable for squeezing the wedge frame (41), and a driving component (1) for driving the limiting clamps (32) to move is provided on the support box (31).

2. A PCB tin spraying device for new energy vehicle lamps according to claim 1, characterized in that: The PCB board clamps (23) on both sides are respectively suitable for clamping the two sides of the PCB board, the bracket (12) extends toward the rotating frame, the wind knife (13) on the bracket (12) is close to the rotating frame, the support column (11) is also connected to the wind knife (13), and the two wind knives (13) are respectively located on both sides of the PCB board clamp (23).

3. A PCB tin spraying device for new energy vehicle lamps according to claim 1, characterized in that: The invention also comprises a second limiting clamp (33), wherein two relative second limiting clamps (33) are slidably arranged in the support box (31), the second limiting clamp (33) is perpendicular to the first limiting clamp (32), the second limiting clamp (33) is suitable for cooperating with the first limiting clamp (32) to limit the PCB board according to the length and width of the PCB board, and the support box (31) is provided with a driving component (2) for driving the first limiting clamp (32) to move.

4. A PCB tin spraying device for new energy vehicle lamps according to claim 1, characterized in that: The invention also comprises a blanking plate (51), the lower part of the limiting clamp (32) is slidably provided with the blanking plate (51) for supporting the PCB board, a second spring (511) is connected between the blanking plate (51) and the limiting clamp (32), a wedge plate (52) is connected to the upper side of the blanking plate (51), the upper end of the wedge plate (52) is a wedge-shaped portion, and a resisting rod (53) is connected to the wedge frame (41), and the resisting rod (53) is suitable for contacting and cooperating with the inner side of the wedge-shaped portion on the wedge plate (52).

5. A PCB tin spraying device for new energy vehicle lamps according to claim 4, characterized in that: The invention also comprises a material blocking plate (54), wherein the lower part of the limiting clamp (32) is slidably provided with the material blocking plate (54) located above the material discharge plate (51), the material blocking plate (54) has a material blocking state that is closed when the material discharge plate (51) is opened, and the material blocking plate (54) also has a material discharge state that is opened when the material discharge plate (51) is closed, the upper side of the material blocking plate (54) is connected with a transmission lever (541), the lower part of the limiting clamp (32) is rotatably provided with an extrusion frame (55) surrounding the transmission lever (541), and the upper part of the wedge plate (52) is connected with a driving lever (521) that passes through the extrusion frame (55).

6. The PCB tin spraying device for new energy vehicle lamps according to claim 1 is characterized in that: It also includes a resistance ring (6), one side of the resistance column (42) is connected to a resistance ring (6) suitable for extruding the wedge frame (41), and the resistance ring (6) is close to the wind knife (13).

7. A PCB tin spraying device for new energy vehicle lamps according to claim 6, characterized in that: It also includes a support rod (71), the support box (31) is connected to the support rod (71), an electric guide rail (72) is installed between the support rod (71) and the support plate (14), and an electric clamp (73) is installed on the slider of the electric guide rail (72), and the electric clamp (73) clamps the PCB board released by the PCB board clamp (23).

8. The PCB tin spraying device for new energy vehicle lamps according to claim 7, characterized in that: It also includes a conveyor belt (8), which is installed on one side of the tin liquid tank (1), and is close to the electric clamp (73). The conveyor belt (8) is used to transport the PCB board after the tin spraying.

9. The PCB tin spraying device for new energy vehicle lamps according to claim 1, characterized in that: The driving assembly 1 is used to drive the two limit clamps 1 (32) to move away from and towards each other. The driving assembly 1 includes a bidirectional screw rod 1 (321) rotatably arranged on the support box (31). The two threaded ends of the bidirectional screw rod 1 (321) are respectively threadedly connected to two opposite transmission plates 1 (322). The two transmission plates 1 (322) are respectively connected to the two limit clamps 1 (32).

10. The PCB tin spraying device for new energy vehicle lamps according to claim 3, characterized in that: The driving assembly 2 is used to drive the two limiting clamps 2 (33) to move away from and towards each other. The driving assembly 2 includes a bidirectional screw rod 2 (331) rotatably arranged on the support box (31). The two threaded ends of the bidirectional screw rod 2 (331) are respectively threadedly connected to two opposite transmission plates 2 (332). The two transmission plates 1 (322) are respectively connected to the two limiting clamps 2 (33).

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