A spraying device for PCB board surface treatment

Abstract

The invention discloses a spraying device for surface treatment of a PCB board, relates to the technical field of spraying devices, and comprises a spraying box, wherein a control console is fixedly installed on the top of the spraying box, a spraying mechanism is fixedly installed on the bottom of the inner wall of the spraying box, an observation window is fixedly penetrated through the inner wall of the spraying box, an exhaust mechanism is fixedly penetrated through the inner wall of the spraying box, and a clamping device is also included; wherein, the clamping device comprises a bottom plate, a push plate, a sliding block, a first spring, a rectangular plate, a linkage plate, a sliding rod, a connecting plate, a second spring, a C-shaped clamping plate, a third spring and a guide plate, wherein the bottom plate is fixedly installed on the bottom of the inner wall of the spraying box, and the push plate is slidably installed on the top of the bottom plate, and the C-shaped clamping plate automatically clamps the PCB board in the process of the push plate entering the spraying box, and the scalability of the C-shaped clamping plate is used to realize rapid clamping of PCB boards of different sizes.

Description

Technical Field

[0001] The invention relates to the technical field of spraying devices, in particular to a spraying device for surface treatment of a PCB board. Background Art

[0002] PCB board is a basic material used to connect electronic components. It is usually composed of an insulating substrate, a copper layer and a protective coating. It is widely used in various electronic devices such as mobile phones, computers and home appliances.

[0003] The patent with patent announcement number CN215902042U relates to a spraying device, and in particular to a Se inverter PCB board surface solder mask ink spraying device. The patent provides a Se inverter PCB board surface solder mask ink spraying device that can be clamped in a diversified manner, has smoother and more convenient operation, can recycle the coating liquid, and avoids waste of resources. The patent provides such a Se inverter PCB board surface solder mask ink spraying device, including a workbench, a spraying chamber, a nozzle, a first support plate, a sliding rod, a long screw, a motor, a sliding block, a bidirectional screw, etc. A spraying chamber is provided on the right side of the workbench, and a nozzle is connected to the top of the spraying chamber. First support plates are provided on the left side of the top of the workbench and the top of the right side of the spraying chamber. Two sliding rods are connected between the two first support plates. The left side of the right first support plate is rotatably provided with a long screw, and a rotating handle is used. Through the cooperation of the long screw and the support plate, the operation of clamping PCB boards of different sizes can be realized, making the clamping operation more diversified.

[0004] The above patent has the function of clamping PCB boards of different sizes. Through the cooperation between the long screw rod and the support plate, the PCB boards of different sizes can be effectively clamped, making the clamping operation more diversified. However, during the clamping process, the operator needs to manually turn the rotating handle to adjust the position of the clamping board. The manual adjustment method increases the labor cost, resulting in low operating efficiency of the operator and affecting the overall work efficiency. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a spraying device for surface treatment of PCB boards, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a spraying device for surface treatment of PCB boards, comprising a spraying box, a control console is fixedly installed on the top of the spraying box, a spraying mechanism is fixedly installed on the bottom of the inner wall of the spraying box, an observation window is fixedly penetrated through the inner wall of the spraying box, an exhaust mechanism is fixedly penetrated through the inner wall of the spraying box, and also includes a clamping device; wherein, the clamping device includes a bottom plate, a push plate, a sliding block, a first spring, a rectangular plate, a linkage plate, a slide bar, a connecting plate, a second spring, a C-shaped clamping plate, a third spring and a guide plate, which pushes the rectangular plate to move in a direction away from the connecting plate, and the movement of the rectangular plate drives the sliding block to move in a direction away from the connecting plate, and the sliding block moves to squeeze the first spring, the bottom plate is fixedly installed on the bottom of the inner wall of the spraying box, and the push plate is slidably installed on the bottom plate The top of the push plate is provided with a sliding groove, the sliding block is slidably mounted on the sliding groove, the No. 1 spring is arranged between the sliding block and the push plate, the rectangular plate is fixedly mounted on a side of the sliding block away from the sliding groove, the linkage plate is fixedly mounted on the surface of the push plate, the sliding rod slides through the inner and outer walls of the push plate, the sliding rod is fixedly mounted on the surface of the connecting plate, the connecting plate away from the rectangular plate one end slides through the inner wall of the push plate, the No. 2 spring is arranged between the connecting plate and the push plate, the C-shaped clamping plate slides through the inner and outer walls of the connecting plate, the No. 3 spring is arranged between the C-shaped clamping plate and the connecting plate, the connecting plate moves to stretch the No. 2 spring, the No. 2 spring is stretched and deformed, and at the same time the connecting plate moves to drive the C-shaped clamping plate to move in the direction away from the sliding rod, and the guide plate is fixedly mounted on the inner wall of the bottom plate close to the sliding rod.

[0007] According to the above technical solution, a sloped surface is provided on one side of the guide plate close to the slide rod, and a roller is rotated and penetrated through the end of the slide rod away from the connecting plate. The roller of the slide rod contacts the sloped surface of the guide plate during movement, and friction is generated between the roller and the guide plate. The roller rotates under the influence of the friction force, and an arc surface is provided on one side of the linkage plate away from the push plate.

[0008] According to the above technical solution, a movable groove is provided on one side of the rectangular plate close to the connecting plate, and the circumferential surface of the connecting plate contacts the inner wall of the movable groove. When the connecting plate moves, the rectangular plate supports one end of the connecting plate to ensure that the connecting plate can move stably. The C-shaped clamping plate is provided with corrugations on one side away from the connecting plate.

[0009] According to the above technical scheme, it also includes a fixing device and an auxiliary device; the fixing device includes a carrying box, a loading plate, a No. 4 spring, a contact plate, a trapezoidal block, a spring sheet, a push rod and a resist block, the linkage plate moves to apply a thrust to the contact plate, and the contact plate moves in the direction of the No. 4 spring under the action of the thrust, the carrying box is fixedly penetrated through the inner and outer walls of the spray box, the loading plate slides through the inner wall of the carrying box, the No. 4 spring is arranged between the loading plate and the carrying box, the contact plate is fixedly installed on a side of the loading plate close to the linkage plate, the trapezoidal block slides through the inner and outer walls of the carrying box, the spring sheet is arranged between the trapezoidal block and the carrying box, the push rod is fixedly installed on a side of the trapezoidal block away from the spray box, the push rod slides through the inner and outer walls of the carrying box, the push rod moves to drive the trapezoidal block to move in the direction away from the contact plate, the trapezoidal block moves to extrude the spring sheet, the resist block is fixedly installed on the surface of the trapezoidal block, the side of the resist block close to the contact plate is provided with an inclined surface 2, and the inner wall of the carrying box away from the trapezoidal block is provided with a rectangular groove.

[0010] According to the above technical solution, a slope three is provided on one side of the trapezoidal block close to the push rod, and the arc surface one moves to apply a thrust to the slope three. The trapezoidal block moves toward the direction of the spring sheet under the influence of the thrust. A limiting groove is provided on one side of the trapezoidal block close to the contact plate. The limiting groove of the trapezoidal block fits with the arc surface one of the linkage plate during the movement, so that the trapezoidal block applies a limit to the movement of the linkage plate.

[0011] According to the above technical scheme, the auxiliary device includes a connecting frame, four corner blocks, an elastic sheet, an L-shaped plate, a blocking plate, a pull rod and a card plate. The blocking block is in contact with the elastic sheet, and the blocking block moves to apply a thrust to the elastic sheet, and the elastic sheet rotates under the action of the thrust. The connecting frame is fixedly installed through the inner and outer walls of the spray box, the four corner blocks are slidably installed on the inner wall of the connecting frame, the elastic sheet is rotatably installed on the inner wall of the four corner blocks, the L-shaped plate is fixedly installed on the circumferential surface of the elastic sheet, the blocking plate is fixedly installed on the inner wall of the four corner blocks, the pull rod slides through a side of the four corner blocks away from the spray box, the card plate is fixedly installed on the circumferential surface of the pull rod, the four corner blocks are in contact with the inner wall of the rectangular groove, and a spiral spring is arranged between the elastic sheet and the four corner blocks.

[0012] According to the above technical solution, the elastic sheet is provided with arc surface 2 on one side close to the pull rod, and the L-shaped plate is provided with arc surface 3 on one side close to the blocking plate. The arc surface 3 is in contact with the blocking plate. The elastic sheet rotates to drive the L-shaped plate to move away from the blocking plate, and the arc surface 3 of the L-shaped plate is separated from the surface in contact with the blocking plate during the movement.

[0013] According to the above technical solution, a slot is provided at the bottom of the inner wall of the connecting frame, and the side of the clamping plate away from the pull rod contacts the inner wall of the slot. The clamping plate moves and separates from the surface in contact with the slot, so that the limit imposed by the connecting frame on the four corner blocks is released.

[0014] The present invention provides a spraying device for surface treatment of PCB boards, which has the following beneficial effects:

[0015] (1) In the spraying device for surface treatment of PCB boards, the PCB board is affected by the thrust and fits with the push plate, so that the rectangular plate completes the initial positioning of the PCB board. The initial positioning is completed by applying thrust to the PCB board by the rectangular plate, which reduces the risk of unstable clamping caused by improper placement. At the same time, the initial positioning can reduce the adjustment time of the operator. The third spring gradually recovers, so that the clamping of the PCB board by the C-shaped clamp is released. The C-shaped clamp automatically completes the clamping of the PCB board during the process of the push plate entering the spray box, and the scalability of the C-shaped clamp is used to realize rapid clamping of PCB boards of different sizes.

[0016] (2) In the spraying device for surface treatment of PCB boards, the trapezoidal block and the linkage plate are fitted together, so that the trapezoidal block applies a limit to the linkage plate. The trapezoidal block applies a limit to the linkage plate moved to a specified position, ensuring that the position of the push plate will not be easily changed due to accidental touch during the spraying process, which helps to improve the stability of the push plate during spraying. The contact plate applies a thrust to the linkage plate, and the linkage plate moves under the influence of the thrust. The limit of the linkage plate can be released only by pulling the push rod in a standardized manner, which helps to improve the standardization of the overall operation. When the limit is released, the contact plate is used to push the linkage plate to move, effectively improving the efficiency of removing the PCB board.

[0017] (3) In the spraying device for surface treatment of PCB boards, the blocking plate transmits vibration to the trapezoidal block, so that the limit groove can fit with the arc surface more smoothly. By transmitting the vibration generated by intermittent collision to the moving trapezoidal block, it is ensured that the limit groove and the arc surface can contact or separate more smoothly, which helps to improve the accuracy of the use of the trapezoidal block. The connection frame applies a limit to the four corner blocks, and the elastic sheet cannot contact the moving block. The position of the four corner blocks can be quickly changed through simple operation, which is convenient for the operator to actively choose whether to use the elastic sheet according to needs, which helps to improve the applicability of the elastic sheet itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the spray box of the present invention;

[0020] Figure 3 It is a schematic diagram of the spraying mechanism and the bottom plate position structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the internal structure of the clamping device of the present invention;

[0022] Figure 5It is a schematic diagram of the position structure of the fixing device and the auxiliary device of the present invention;

[0023] Figure 6 It is a schematic diagram of the internal structure of the auxiliary device of the present invention;

[0024] Figure 7 For the present invention Figure 6 Enlarged structural diagram at A in the middle.

[0025] In the figure: 1. spray box; 2. control console; 3. spray mechanism; 4. observation window; 5. exhaust mechanism; 6. bottom plate; 7. push plate; 8. sliding block; 9. spring No. 1; 10. rectangular plate; 11. linkage plate; 12. slide rod; 13. connecting plate; 14. spring No. 2; 15. C-shaped clamping plate; 16. spring No. 3; 17. guide plate; 181. carrying box; 182. loading plate; 183. spring No. 4; 184. contact plate; 185. trapezoidal block; 186. spring piece; 187. push rod; 188. stop block; 191. connecting frame; 192. four corner blocks; 193. elastic sheet; 194. L-shaped plate; 195. blocking plate; 196. pull rod; 197. card plate. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-Figure 4One embodiment of the present invention is: a spraying device for surface treatment of PCB boards, comprising a spraying box 1, a control console 2 is fixedly installed on the top of the spraying box 1, a spraying mechanism 3 is fixedly installed on the bottom of the inner wall of the spraying box 1, an observation window 4 is fixedly penetrated through the inner wall of the spraying box 1, an exhaust mechanism 5 is fixedly penetrated through the inner wall of the spraying box 1, and also includes a clamping device; wherein the clamping device includes a bottom plate 6, a push plate 7, a sliding block 8, a first spring 9, a rectangular plate 10, a linkage plate 11, a slide bar 12, a connecting plate 13, a second spring 14, a C-shaped clamping plate 15, a third spring 16 and a guide plate 17, the bottom plate 6 is fixedly installed on the bottom of the inner wall of the spraying box 1, the push plate 7 is slidably installed on the top of the bottom plate 6, the inner wall of the push plate 7 is provided with a slide groove, the sliding block 8 is slidably installed on the slide groove, and the first spring 9 is arranged on the sliding block 8 Between the push plate 7, the rectangular plate 10 is fixedly mounted on the side of the sliding block 8 away from the sliding groove, the linkage plate 11 is fixedly mounted on the surface of the push plate 7, the sliding rod 12 slides through the inner and outer walls of the push plate 7, the sliding rod 12 is fixedly mounted on the surface of the connecting plate 13, and the end of the connecting plate 13 away from the rectangular plate 10 slides through the inner wall of the push plate 7, the second spring 14 is arranged between the connecting plate 13 and the push plate 7, the C-shaped clamping plate 15 slides through the inner and outer walls of the connecting plate 13, the third spring 16 is arranged between the C-shaped clamping plate 15 and the connecting plate 13, and the guide plate 17 is fixedly mounted on the inner wall of the bottom plate 6 close to the sliding rod 12. The rectangular plate 10 applies a thrust to the PCB board to complete the initial positioning, thereby reducing the risk of unstable clamping caused by improper placement. At the same time, the initial positioning can reduce the adjustment time of the operator and improve work efficiency.

[0028] A slope is provided on one side of the guide plate 17 close to the slide rod 12, a roller is rotatably penetrated on one end of the slide rod 12 away from the connecting plate 13, and an arc surface is provided on one side of the linkage plate 11 away from the push plate 7. By installing the roller on the slide rod 12, the wear generated when the slide rod 12 contacts the guide plate 17 can be reduced, effectively maintaining long-term normal operation.

[0029] A movable groove is provided on one side of the rectangular plate 10 close to the connecting plate 13, and the circumferential surface of the connecting plate 13 contacts the inner wall of the movable groove. A corrugation is provided on one side of the C-shaped clamping plate 15 away from the connecting plate 13. The C-shaped clamping plate 15 automatically clamps the PCB board during the process of the push plate 7 entering the spray box 1, which effectively reduces the labor cost and realizes the rapid clamping of PCB boards of different sizes by means of the scalability of the C-shaped clamping plate 15.

[0030] When the present embodiment is working, the rectangular plate 10 is first pushed to move in the direction away from the connecting plate 13. The movement of the rectangular plate 10 drives the sliding block 8 to move in the direction away from the connecting plate 13. The sliding block 8 moves to squeeze the No. 1 spring 9. The No. 1 spring 9 is squeezed and deformed. After the rectangular plate 10 moves to the predetermined position, the PCB board to be sprayed is placed on the top of the push plate 7, and the rectangular plate 10 is released. The deformed No. 1 spring 9 is restored under the action of its own elasticity. The restoration of the No. 1 spring 9 drives the sliding block 8 to move in the direction of the connecting plate 13. The movement of the sliding block 8 drives the rectangular plate 10 to move in the direction of the connecting plate 13. The side of the rectangular plate 10 close to the connecting plate 13 contacts the PCB board during the movement. The PCB board applies a barrier to the moving rectangular plate 10. The rectangular plate 10 is blocked. When the block stops moving, the deformed spring 9 applies a reaction force to the sliding block 8, and the sliding block 8 transmits the reaction force to the rectangular plate 10. The rectangular plate 10 applies a thrust to the PCB board under the action of the reaction force. The PCB board is affected by the thrust and fits with the smooth inner wall of the push plate 7, so that the rectangular plate 10 completes the initial positioning of the PCB board. The initial positioning is completed by applying a thrust to the PCB board by the rectangular plate 10, which reduces the risk of unstable clamping caused by improper placement. At the same time, the initial positioning can reduce the adjustment time of the operator and improve work efficiency. After the initial positioning is completed, the push plate 7 is pushed to move in the direction of the bottom plate 6. The movement of the push plate 7 drives the linkage plate 11 and the PCB board to move in the direction of the bottom plate 6. At the same time, the movement of the push plate 7 drives the slide bar 12 to the bottom plate 6. The sliding bar 12 moves in the direction of the guide plate 17. The roller of the sliding bar 12 contacts the inclined surface of the guide plate 17 during the movement. Friction is generated between the roller movement and the guide plate 17. The roller rotates under the influence of the friction force. At the same time, the inclined surface exerts resistance on the rotating roller. The moving sliding bar 12 is affected by the resistance and moves in the direction away from the guide plate 17. The movement of the sliding bar 12 drives the connecting plate 13 to move in the direction of the PCB board. The movement of the connecting plate 13 stretches the second spring 14. The second spring 14 is stretched and deformed. At the same time, the movement of the connecting plate 13 drives the C-shaped clamping plate 15 to move in the direction away from the sliding bar 12. The corrugation of the C-shaped clamping plate 15 contacts the outer wall of the PCB board during the movement. The PCB board blocks the moving C-shaped clamping plate 15, so that the connecting plate 13 continues to move. The No. 3 spring 16 is squeezed and deformed. The deformed No. 3 spring 16 applies a reaction force to the C-shaped clamping plate 15. The corrugation is in close contact with the PCB board under the action of the reaction force, so that the C-shaped clamping plate 15 completes the clamping of the PCB board. The push plate 7 moves to the specified position and stops moving. The spraying mechanism 3 is started to spray the PCB board. After the spraying is completed, the push plate 7 is pulled out to separate the contact surface between the roller and the guide plate 17. The deformed No. 2 spring 14 recovers and drives the connecting plate 13 to move toward the direction of the slide bar 12. When the connecting plate 13 moves, the deformed No. 3 spring 16 gradually recovers, so that the clamping of the PCB board by the C-shaped clamping plate 15 is automatically released. The operator pushes the rectangular plate 10 and takes out the PCB board to end the spraying work.The C-shaped clamping plate 15 automatically clamps the PCB board during the process of the push plate 7 entering the spray box 1, which effectively reduces the labor cost and realizes the rapid clamping of PCB boards of different sizes by means of the scalability of the C-shaped clamping plate 15.

[0031] See also Figure 1-Figure 7 On the basis of the above embodiment, another embodiment of the present invention further includes a fixing device and an auxiliary device; the fixing device includes a carrying box 181, a loading plate 182, a fourth spring 183, a contact plate 184, a trapezoidal block 185, a spring 186, a push rod 187 and a stop block 188, the carrying box 181 is fixedly penetrated through the inner and outer walls of the spray box 1, the loading plate 182 slides through the inner wall of the carrying box 181, the fourth spring 183 is arranged between the loading plate 182 and the carrying box 181, the contact plate 184 is fixedly installed on a side of the loading plate 182 close to the linkage plate 11, the trapezoidal block 185 slides through the inner wall of the carrying box 181 The outer wall, the spring piece 186 is arranged between the trapezoidal block 185 and the carrying box 181, the push rod 187 is fixedly installed on the side of the trapezoidal block 185 away from the spray box 1, the push rod 187 slides through the inner and outer walls of the carrying box 181, the stop block 188 is fixedly installed on the surface of the trapezoidal block 185, and the side of the stop block 188 close to the contact plate 184 is provided with a second inclined surface, and the inner wall of the carrying box 181 away from the trapezoidal block 185 is provided with a rectangular groove, and the trapezoidal block 185 is used to limit the linkage plate 11 moved to the specified position to ensure that the position of the push plate 7 during spraying will not be easily changed due to accidental touch, which helps to improve the stability of the push plate 7 during spraying.

[0032] A slope three is provided on one side of the trapezoidal block 185 close to the push rod 187, and a limit groove is provided on one side of the trapezoidal block 185 close to the contact plate 184. The limit imposed on the linkage plate 11 can only be released by pulling the push rod 187 in a standardized manner, which helps to improve the standardization of the overall operation, and when the limit is released, the contact plate 184 is used to push the linkage plate 11 to move, effectively improving the removal efficiency.

[0033] The auxiliary device includes a connecting frame 191, a four-corner block 192, an elastic sheet 193, an L-shaped plate 194, a blocking plate 195, a pull rod 196 and a card plate 197. The connecting frame 191 is fixedly installed through the inner and outer walls of the spray box 1, the four-corner block 192 is slidably installed on the inner wall of the connecting frame 191, the elastic sheet 193 is rotatably installed on the inner wall of the four-corner block 192, the L-shaped plate 194 is fixedly installed on the circumferential surface of the elastic sheet 193, the blocking plate 195 is fixedly installed on the inner wall of the four-corner block 192, and the pull rod 196 is slidably installed on the inner wall of the four-corner block 192. The movable part runs through the side of the four-corner block 192 away from the spray box 1, the clamping plate 197 is fixedly installed on the circumferential surface of the pull rod 196, the four-corner block 192 contacts the inner wall of the rectangular groove, and a spiral spring is arranged between the elastic sheet 193 and the four-corner block 192. The intermittent contact between the stop block 188 and the elastic sheet 193 produces continuous collision, and then transmits the vibration to the moving trapezoidal block 185, ensuring that the limit groove and the arc surface can be more smooth when in contact or separation, which helps to improve the accuracy of the use of the trapezoidal block 185.

[0034] The elastic sheet 193 has an arc surface 2 on one side close to the pull rod 196, and the L-shaped plate 194 has an arc surface 3 on one side close to the blocking plate 195. The arc surface 3 is in contact with the blocking plate 195. By providing the arc surface 2 on the elastic sheet 193, when the stop plate 188 contacts the elastic sheet 193 again during the resetting process, the elastic sheet 193 will not affect the normal movement of the stop plate 188, thereby improving the stability of use.

[0035] A card slot is provided at the bottom of the inner wall of the connecting frame 191, and the side of the card plate 197 away from the pull rod 196 contacts the inner wall of the card slot. The position of the four corner blocks 192 can be quickly changed through simple operation, which is convenient for the operator to actively choose whether to use the elastic sheet 193 according to needs, thereby helping to improve the applicability of the elastic sheet 193 itself.

[0036] When the present embodiment is working, the linkage plate 11 contacts with a side of the contact plate 184 close to the push rod 187 during the movement, and the linkage plate 11 moves to apply a thrust to the contact plate 184. The contact plate 184 moves in the direction of the No. 4 spring 183 under the action of the thrust, and the movement of the contact plate 184 drives the loading plate 182 to move in the direction of the No. 4 spring 183. The loading plate 182 squeezes the No. 4 spring 183 during the movement, and the No. 4 spring 183 is squeezed and deformed. The deformed No. 4 spring 183 stores energy under the action of its own elasticity. At the same time, the arc surface 1 of the linkage plate 11 contacts with the inclined surface 3 of the trapezoidal block 185 during the movement. , the arc surface one moves and applies a thrust to the inclined surface three, and the trapezoidal block 185 is affected by the thrust and moves in the direction of the spring piece 186. The movement of the trapezoidal block 185 drives the block 188 to move away from the contact plate 184. At the same time, the trapezoidal block 185 moves to squeeze the spring piece 186, and the spring piece 186 is squeezed and deformed. The linkage plate 11 continues to move and separates from the inclined surface one, so that the deformed spring piece 186 recovers and drives the trapezoidal block 185 to move in the direction of the contact plate 184. The limiting groove of the trapezoidal block 185 fits with the arc surface one of the linkage plate 11 during the movement, so that the trapezoidal block 185 applies a limit to the movement of the linkage plate 11. The linkage plate 11 moved to the specified position is limited by the trapezoidal block 185 to ensure that the position of the push plate 7 will not be easily changed due to accidental touch during the spraying process, which is helpful to improve the stability of the push plate 7 during spraying. After the spraying is completed, the operator pushes the push rod 187 to move away from the contact plate 184 after observing through the observation window 4. The push rod 187 moves to drive the trapezoidal block 185 to move away from the contact plate 184. The trapezoidal block 185 moves to squeeze the spring piece 186. At the same time, the limiting groove of the trapezoidal block 185 is separated from the arc surface during the movement, so that the limiting groove of the trapezoidal block 185 on the linkage plate 11 is The position is released, and the deformed No. 4 spring 183 recovers and drives the loading plate 182 to quickly reset. The loading plate 182 moves and drives the contact plate 184 to move away from the No. 4 spring 183. The contact plate 184 moves and applies a thrust to the linkage plate 11. The linkage plate 11 is affected by the thrust and moves away from the spray box 1. The linkage plate 11 moves and drives the push plate 7 to be pulled out. The limit imposed on the linkage plate 11 can be released by pulling the push rod 187 in a standardized manner, which helps to improve the standardization of the overall operation. When the limit is released, the contact plate 184 is used to push the linkage plate 11 to move, which effectively improves the efficiency of removing the PCB board.

[0037] When the stop block 188 moves toward the spring sheet 186, the stop block 188 contacts the elastic sheet 193, and the stop block 188 moves to apply a thrust to the elastic sheet 193. The elastic sheet 193 rotates under the action of the thrust, and the elastic sheet 193 rotates to stretch the scroll spring. The scroll spring is deformed by the stretching, and at the same time, the elastic sheet 193 rotates to drive the L-shaped plate 194 to move away from the blocking plate 195. The arc surface 3 of the L-shaped plate 194 is separated from the surface in contact with the blocking plate 195 during the movement. The stop block 188 continues to move and separates from the surface in contact with the elastic sheet 193. The deformed scroll spring recovers and drives the elastic sheet 193 to rotate to the initial position. The rotation drives the L-shaped plate 194 to move toward the blocking plate 195. The arc surface 3 collides with the blocking plate 195 during the rapid movement to generate vibration. The blocking plate 195 transmits the vibration to the moving trapezoidal block 185 under the effect of resonance, so that the limiting groove can fit with the arc surface 1 more smoothly. When the stop block 188 is reset in the direction away from the spring sheet 186, the inclined surface 3 of the stop block 188 contacts the arc surface 2 of the elastic sheet 193 during the movement. The inclined surface 3 moves to apply pressure to the arc surface 2. The elastic sheet 193 is slightly deformed by the pressure. The inclined surface 3 continues to move and separates from the arc surface 2. The deformed elastic sheet 193 recovers under the effect of its own elasticity. The intermittent contact between the stop block 188 and the elastic sheet 193 produces continuous collisions, and then transmits the vibration to the moving trapezoidal block 185, ensuring that the contact or separation between the limit groove and the arc surface can be smoother, which helps to improve the accuracy of the use of the trapezoidal block 185. When the operator needs to release the use of the elastic sheet 193, the pull rod 196 is pulled upward, and the movement of the pull rod 196 drives the card plate 197 to move upward, and the card plate 197 moves and separates from the surface in contact with the card groove, so that the limit imposed by the connecting frame 191 on the four corner blocks 192 is released, and the pull rod 196 is pushed to move in the direction close to the connecting frame 191, and the movement of the pull rod 196 drives the four corner blocks 192 to move The connecting frame 191 moves in the direction of the four-corner block 192, and the movement of the elastic sheet 193 drives the connecting frame 191 to move. After the four-corner block 192 moves to the predetermined position, the pull rod 196 is pushed to move downward, and the movement of the pull rod 196 drives the card plate 197 to move downward. The card plate 197 moves and contacts the inner wall of the card slot, so that the connecting frame 191 restores the limit imposed on the four-corner block 192. At the same time, the elastic sheet 193 cannot contact the moving block 188. The position of the four-corner block 192 can be quickly changed through simple operation, which is convenient for the operator to actively choose whether to use the elastic sheet 193 according to needs, which helps to improve the applicability of the elastic sheet 193 itself.

[0038] 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 spraying device for surface treatment of a PCB, comprising a spraying box (1), characterized in that: The spray box (1) has a control console (2) fixedly mounted on the top, a spray mechanism (3) fixedly mounted on the bottom of the inner wall of the spray box (1), an observation window (4) fixedly penetrated through the inner wall of the spray box (1), an exhaust mechanism (5) fixedly penetrated through the inner wall of the spray box (1), and further comprising a clamping device, a fixing device and an auxiliary device; The clamping device comprises a bottom plate (6), a push plate (7), a sliding block (8), a first spring (9), a rectangular plate (10), a linkage plate (11), a slide rod (12), a connecting plate (13), a second spring (14), a C-shaped clamping plate (15), a third spring (16) and a guide plate (17), wherein the bottom plate (6) is fixedly mounted on the bottom of the inner wall of the spray box (1), the push plate (7) is slidably mounted on the top of the bottom plate (6), a sliding groove is provided on the inner wall of the push plate (7), the sliding block (8) is slidably mounted on the sliding groove, the first spring (9) is arranged between the sliding block (8) and the push plate (7), and the rectangular plate (10) is fixedly mounted on the sliding block (8) away from the sliding groove. On one side, the linkage plate (11) is fixedly mounted on the surface of the push plate (7), the slide bar (12) slides through the inner and outer walls of the push plate (7), the connecting plate (13) is fixedly mounted on the side of the slide bar (12) close to the push plate (7), the end of the connecting plate (13) away from the rectangular plate (10) slides through the inner wall of the push plate (7), the second spring (14) is arranged between the connecting plate (13) and the push plate (7), the C-shaped clamping plate (15) slides through the inner and outer walls of the connecting plate (13), the third spring (16) is arranged between the C-shaped clamping plate (15) and the connecting plate (13), and the guide plate (17) is fixedly mounted on the inner wall of the bottom plate (6) close to the slide bar (12); The fixing device comprises a carrying box (181), a loading plate (182), a No. 4 spring (183), a contact plate (184), a trapezoidal block (185), a spring sheet (186), a push rod (187) and a stop block (188); the carrying box (181) is fixedly passed through the inner and outer walls of the spray box (1); the loading plate (182) is slidably passed through the inner wall of the carrying box (181); the No. 4 spring (183) is arranged between the loading plate (182) and the carrying box (181); the contact plate (184) is fixedly mounted on a side of the loading plate (182) close to the linkage plate (11); The trapezoidal block (185) slides through the inner and outer walls of the carrying box (181); the spring sheet (186) is arranged between the trapezoidal block (185) and the carrying box (181); the push rod (187) is fixedly mounted on a side of the trapezoidal block (185) away from the spray box (1); the push rod (187) slides through the inner and outer walls of the carrying box (181); the stop block (188) is fixedly mounted on the surface of the trapezoidal block (185); a second inclined surface is provided on a side of the stop block (188) close to the contact plate (184); and a rectangular groove is provided on an inner wall of the carrying box (181) away from the trapezoidal block (185); The auxiliary device comprises a connecting frame (191), four corner blocks (192), an elastic sheet (193), an L-shaped plate (194), a blocking plate (195), a pull rod (196) and a clamping plate (197); the connecting frame (191) is fixedly connected to the inner and outer walls of the spray box (1); the four corner blocks (192) are slidably mounted on the inner wall of the connecting frame (191); the elastic sheet (193) is rotatably mounted on the inner wall of the four corner blocks (192); the L-shaped plate (194) is fixedly connected to the inner wall of the spray box (1); 94) is fixedly mounted on the circumferential surface of the elastic sheet (193), the blocking plate (195) is fixedly mounted on the inner wall of the four-corner block (192), the pull rod (196) slides through the side of the four-corner block (192) away from the spray box (1), the clamping plate (197) is fixedly mounted on the circumferential surface of the pull rod (196), the four-corner block (192) is in contact with the inner wall of the rectangular groove, and a spiral spring is arranged between the elastic sheet (193) and the four-corner block (192).

2. The spraying device for PCB surface treatment according to claim 1, characterized in that: A sloped surface is provided on one side of the guide plate (17) close to the slide bar (12), a roller is rotatably penetrated on one end of the slide bar (12) away from the connection plate (13), and a curved surface is provided on one side of the linkage plate (11) away from the push plate (7).

3. The spraying device for PCB surface treatment according to claim 2, characterized in that: A moving groove is provided on one side of the rectangular plate (10) close to the connecting plate (13), a circumferential surface of the connecting plate (13) contacts the inner wall of the moving groove, and a corrugation is provided on one side of the C-shaped clamping plate (15) away from the connecting plate (13).

4. The spraying device for PCB surface treatment according to claim 3 is characterized in that: A third inclined surface is provided on a side of the trapezoidal block (185) close to the push rod (187), and a limiting groove is provided on a side of the trapezoidal block (185) close to the contact plate (184).

5. The spraying device for PCB surface treatment according to claim 4, characterized in that: A second arc surface is formed on a side of the elastic sheet (193) close to the pull rod (196), and a third arc surface is formed on a side of the L-shaped plate (194) close to the blocking plate (195), wherein the third arc surface is in contact with the blocking plate (195).

6. The spraying device for PCB surface treatment according to claim 5, characterized in that: A clamping groove is provided at the bottom of the inner wall of the connection frame (191), and a surface of the clamping plate (197) away from the pull rod (196) contacts the inner wall of the clamping groove.

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