A sand blasting device for automobile spoiler

Abstract

This application relates to a sandblasting device for automobile rear wings, belonging to the field of sandblasting equipment. It includes a chamber with a processing chamber containing a spray gun. The edge contour of the rear wing blank is integrally formed with a process flash plate. A clamp is provided on the chamber. The clamp includes multiple clamping blocks, a connecting seat, a positioning block, a positioning power source, and a driving component. All clamping blocks are sliding blocks. The positioning blocks and connecting seats slide relative to each other. There are two positioning blocks, each located on opposite sides of the rear wing blank. The driving component is a propulsion cylinder. A reinforcing push rod is provided between the connecting seat and the propulsion cylinder. The sliding direction of the reinforcing push rod is perpendicular to the sliding direction of the clamping blocks. A return spring connects the reinforcing push rod and the connecting seat. Both the positioning block and the reinforcing push rod are provided with wedge surfaces. This application uses a clamp to hold the process flash plate to fix the rear wing blank. The clamp does not affect the sandblasting operation on the surface of the rear wing blank, facilitating automated sandblasting and improving work efficiency and processing uniformity.

Description

Technical Field

[0001] This application relates to the field of sandblasting equipment, and more particularly to a sandblasting device for automobile rear wings. Background Technology

[0002] Sandblasting is a process that uses the impact of a high-speed stream of sand to clean and roughen the surface of a workpiece. It uses compressed air as power to propel abrasive materials (such as quartz sand, corundum, sea sand, etc.) into the workpiece surface in the form of a high-speed jet, thereby removing rust and other contaminants and improving the surface finish of the workpiece.

[0003] In related technologies, a V-shaped car rear wing needs to undergo surface sandblasting after it has been shaped. The shaped rear wing blank is its entire surface, so the sandblasting is usually done manually. That is, the operator stands next to the sandblasting equipment, with the assistance of protective equipment, and puts his hand into the sandblasting chamber to hold the rear wing blank and the spray gun to perform the sandblasting operation. Such operation is not only inefficient, but also negatively affects the uniformity of the surface treatment of the rear wing blank. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a sandblasting device for automotive rear wings.

[0005] The sandblasting device for automobile rear spoilers provided in this application adopts the following technical solution:

[0006] A sandblasting device for an automobile rear wing includes a chamber with a processing chamber inside. A spray gun is installed in the processing chamber. A process flash plate is integrally formed on the edge contour of the rear wing blank. A clamp is provided on the chamber for holding the process flash plate. The clamp includes multiple clamping blocks, a connecting seat, positioning blocks, a positioning power source, and a driving component. Each clamping block is a sliding block, with two sliding blocks located on opposite sides of the rear wing blank. Two positioning blocks slide relative to the connecting seat, also located on opposite sides of the rear wing blank. The driving component is a propulsion cylinder, and a reinforcing push rod is slidably arranged between the connecting seat and the propulsion cylinder. There are two reinforcing push rods. A single reinforcing push rod is located between a clamping block and a positioning block. The sliding direction of the reinforcing push rod is perpendicular to the sliding direction of the clamping block. A return spring is connected between the reinforcing push rod and the connecting seat. In its natural state, the reinforcing push rod tends to move closer to the positioning block. The side of the positioning block facing the clamping block and the end of the reinforcing push rod facing the positioning block are both provided with wedge surfaces. When the positioning block moves away from the tail fin blank, the wedge surfaces of the two abut against each other and generate a vertical pushing force, causing the reinforcing push rod to move closer to the clamping block and abut against the surface of the clamping block. A clamping groove is opened on the clamping block, and the process flash plate is located in the clamping groove and abuts against the groove wall.

[0007] By adopting the above technical solution, the fixture and the process flash plate are designed so that the fixture positions and fixes the tail wing blank through the process flash plate. This ensures that the tail wing blank maintains the positional accuracy and stability required for sandblasting within the processing chamber, which is beneficial for improving the uniformity of the sandblasting effect and the work efficiency. Furthermore, the fixture does not directly contact the tail wing blank, so it does not affect the sandblasting action of the spray gun on the surface of the tail wing blank. After sandblasting, the process flash plate is removed and the surface is ground. The fixture first positions the tail wing blank through the positioning block, and then pushes the reinforcing push rod through the wedge drive. After the reinforcing push rod moves, it abuts against the clamping block to further fix the position of the tail wing blank and the process flash plate. The clamping groove and the process flash plate are interlocked and cooperate with each other, and the clamping block clamps the process flash plate, thus fixing the tail wing blank in sequence.

[0008] Preferably, the positioning power source is an electric bidirectional lead screw, which is rotatably connected to the connecting seat. Both positioning blocks are threadedly connected to the bidirectional lead screw, and an isolation bellows is sleeved outside the bidirectional lead screw and connected between the connecting seat and the positioning blocks.

[0009] By adopting the above technical solution, the rotation of the bidirectional screw cylinder can make the two positioning blocks move closer or further apart. In the projection along the vertical bin door surface, the two positioning blocks are symmetrical about the rotation axis of the bin door. That is, when the two positioning blocks simultaneously abut the tail wing blank, the tail wing blank is located at the center position of the projection along the vertical bin door surface. The isolation corrugated pipe protects the bidirectional screw and reduces the influence of sand on the bidirectional screw.

[0010] Preferably, the clamp further includes a fixed base, and the connecting seat is rotatably mounted on the fixed base. When the spray gun sandblasts the tail fin blank, the fixed base and the chamber are relatively fixed.

[0011] By adopting the above technical solution, when the connecting seat rotates, the clamping block and the tail wing blank on it also rotate, so that the entire surface of the tail wing blank can be sprayed by the spray gun.

[0012] Preferably, the chamber body has an operating hole that communicates with the processing chamber. A chamber door is rotatably connected to the chamber body and within the operating hole. The rotation axis of the chamber door relative to the chamber body is the line of symmetry of the shape of the chamber door. Two clamps are provided, which are located on opposite sides of the chamber door and are independent of each other.

[0013] By adopting the above technical solution, when the door rotates 180°, the door panel can be changed to face the processing chamber, and the positions of the two clamps can be interchanged simultaneously. Before and after rotation, the door is in a closed state with the operation hole filled, which improves the space utilization rate.

[0014] Preferably, a gap is left between the door and the wall of the operating hole, and an expansion body is provided on the edge of the door or the wall of the operating hole. When the door closes the operating hole, the expansion body simultaneously abuts against the door and the wall of the operating hole. A controller is provided on the chamber body to control the expansion or contraction of the expansion body.

[0015] Preferably, a rotating shaft tube is fixedly connected to the door, and the axis of the rotating shaft tube is the rotation axis of the door relative to the compartment body. The door is rotatably connected to the compartment body through the rotating shaft tube. The expansion body is located on the door and is an elastic inflation tube. The elastic inflation tube is connected to the door along the edge contour of the door. The controller is an air pump. A connecting air pipe is connected between the air pump and the elastic inflation tube, and the connecting air pipe passes through the interior of the rotating shaft tube.

[0016] By adopting the above technical solution, the expander can contract or expand on the door to change its volume. When the door is closed, the expander expands to fill the gap between the door and the operating hole wall, thus improving the sealing performance of the operating hole. When the operating hole needs to be opened, the expander contracts and its volume decreases, allowing the door to rotate smoothly through the gap between the door and the operating hole wall.

[0017] Preferably, it also includes a suction system for generating negative pressure airflow in the processing chamber; the chamber body also has a transition chamber, which is connected to the processing chamber through an operating hole; the chamber body has a make-up air channel, which connects the processing chamber and the transition chamber.

[0018] By adopting the above technical solution, the side of the chamber door away from the processing chamber is not the external space. Even when the chamber door is open, the sand overflowing from the processing chamber will not immediately enter the external space. Furthermore, the suction system can generate a certain negative pressure airflow in the transition chamber through the air supply channel, and the sand floating in the transition chamber can flow back into the processing chamber through the air supply channel.

[0019] Preferably, a sand hopper is provided at the bottom of the transition chamber, the port of the air supply channel in the transition chamber is located above the transition chamber, and an isolation plate is fixedly connected inside the sand hopper, with multiple sand drop holes through the isolation plate.

[0020] By adopting the above technical solution, the sand material in the transition chamber that is not affected by the airflow and the sand material on the clamps in the transition space can fall freely into the sand hopper, which is convenient for recycling.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. By setting up the fixture and the process flash plate, the fixture positions and fixes the tail wing blank through the process flash plate, so that the tail wing blank can maintain the positional accuracy and stability required for sandblasting in the processing chamber. This is beneficial to improving the uniformity of the sandblasting effect and the work efficiency. Moreover, the fixture does not directly contact the tail wing blank, so it does not affect the sandblasting action of the spray gun on the surface of the tail wing blank. After sandblasting, the process flash plate is removed and the surface is polished.

[0023] 2. By setting up a transition chamber, the side of the chamber door facing away from the processing chamber is not an external space. During the opening of the chamber door, the sand overflowing from the processing chamber will not immediately enter the external space. Moreover, the suction system can generate a certain negative pressure airflow in the transition chamber through the air supply channel. The sand floating in the transition chamber can flow back into the processing chamber through the air supply channel, which improves the sand recovery rate and reduces the negative impact on the external environment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the sandblasting device for automobile rear wings in Embodiment 1 of this application.

[0025] Figure 2 This is a schematic diagram illustrating the structure of the tail fin blank in Embodiment 1 of this application.

[0026] Figure 3 This is a cross-sectional view of the structure of the expansion body on the warehouse door in Embodiment 1 of this application.

[0027] Figure 4 This is a schematic diagram illustrating the structure of the make-up air channel in Embodiment 1 of this application.

[0028] Figure 5 This is a schematic diagram illustrating the structure of the sand accumulation hopper in Embodiment 1 of this application.

[0029] Figure 6 This is a cross-sectional schematic diagram illustrating the mating structure of the clamping block and the process flash plate in Embodiment 1 of this application.

[0030] Figure 7 This is a cross-sectional schematic diagram illustrating the working process of the fixture in Embodiment 2 of this application.

[0031] Figure 8 This is a schematic diagram illustrating the driving principle of the positioning block in Embodiment 2 of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Bin body; 11. Processing chamber; 12. Transition chamber; 121. Sand hopper; 13. Operating hole; 14. Air supply channel; 15. Spray gun; 2. Bin door; 21. Expansion body; 211. Connecting strip; 212. Connecting air pipe; 22. Connecting groove; 23. Rotating shaft tube; 24. Protective plate; 241. Bending part; 3. Isolation plate; 31. Sand drop hole; 4. Fixture; 41. Fixed seat; 42. Connecting seat; 43. Clamping block; 431. Fixed block; 432. Sliding block; 433. Clamping groove; 44. Positioning block; 45. Reinforcing push rod; 451. Return spring; 46. Driving component; 47. Positioning power source; 48. Isolation corrugated pipe; 5. Tail wing blank; 51. Process flash plate. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0034] This application discloses a sandblasting device for automobile rear spoilers, such as... Figure 1 and 2 As shown, the system includes a chamber 1, a door 2, and a suction system. The chamber 1 has a processing chamber 11, a transition chamber 12, and an operating hole 13. The transition chamber 12 and the processing chamber 11 are connected through the operating hole 13. The door 2 is used to control the opening and closing of the operating hole 13. A spray gun 15 is installed inside the processing chamber 11, and the tail fin blank 5 is located inside the processing chamber 11 and can be sandblasted by the spray gun 15. The transition chamber 12 is connected to the outside through a doorway (not shown) on the chamber 1 with a hanging soft curtain. The workpiece to be sandblasted is the tail fin blank 5, which is a long strip of carbon fiber material with a V-shaped cross-section and a certain curvature. Its edges are integrally formed with a process flash plate 51. A mechanical cantilever for adjusting the position and angle of the spray gun 15 is also installed inside the processing chamber 11.

[0035] like Figure 1 and 3 As shown, the door 2 is located within the operating hole 13 and is rotatably connected to the chamber body 1. The door 2 is approximately rectangular in shape, and its axis of rotation relative to the chamber body 1 is its axis of symmetry. The door 2 is equipped with clamps 4 for holding the tail fin blank 5. The door 2 has a rotation range of 180°. Two clamps 4 are provided, located on opposite sides of the door 2. Each clamp 4 can independently hold one tail fin blank 5; that is, when one clamp 4 is in the processing chamber 11, the other clamp 4 is in the transition chamber 12. The tail fin blank 5 is vertically positioned under the clamping and fixing of the clamps 4, and the mechanical cantilever controls the vertical movement of the spray gun 15.

[0036] like Figure 1 and 3As shown, a rotating shaft tube 23 is fixedly connected to the door 2. The door 2 is rotatably connected to the compartment body 1 through the rotating shaft tube 23. The door 2 is located at the operating hole 13 and is rotatably connected to the compartment body 1. The axis of the rotating shaft tube 23 is the axis of rotation of the door 2 relative to the compartment body 1. The axis of the rotating shaft tube 23 is vertical. There are two rotating shaft tubes 23, located at the middle of the upper and lower edges of the door 2 respectively. A motor for controlling the rotation of the rotating shaft tube 23 is installed on the top of the compartment body 1. The thickness of the door 2 is greater than the outer diameter of the rotating shaft tube 23. Therefore, in order to enable the door 2 to rotate smoothly, there is a gap between the edge of the door 2 and the wall of the operating hole 13. At the same time, an expansion body 21 is provided on the edge of the door 2. A controller is provided on the compartment body 1 to control the expansion or contraction of the expansion body 21. The expansion or contraction of the expansion body 21 can change the presence or absence of the gap between the door 2 and the wall of the operating hole 13, so as to ensure the sealing of the operating hole 13 when it is closed, while ensuring that the door 2 can rotate smoothly.

[0037] like Figure 1 , 3 As shown in Figure 4, the inflator 21 is an elastic inflation tube, which is connected to the door 2 along the edge contour of the door 2. A snap-fit ​​strip 211 is fixedly connected to the wall of the elastic inflation tube, and a snap-fit ​​groove 22 is provided on the door 2 for the snap-fit ​​strip 211 to be inserted. That is, the elastic inflation tube is connected and fixed to the door 2 by snap-fit. A controller for controlling the expansion or contraction of the inflator 21 is installed on the body 1. The controller is an air pump (not shown in the figure). A connecting air pipe 212 is connected between the air pump and the elastic inflation tube. The connecting air pipe 212 passes through the interior of the rotating shaft tube 23, so that the connecting air pipe 212 will not obstruct the fit between the door 2 and the body 1.

[0038] like Figure 1 and 4 As shown, the suction system is used to generate negative pressure airflow in the processing chamber 11. The air outlet of the suction system is located on the side of the processing chamber 11 away from the door 2. After the spray gun 15 sprays out sand, the fine sand particles will float in the air, and the negative pressure airflow can carry the sand in the air away from the processing chamber 11. A make-up air channel 14 is provided on the chamber body 1. The make-up air channel 14 is used to supplement the airflow in the processing chamber 11 to maintain the relative stability of the air pressure in the processing chamber 11. The make-up air channel 14 connects the processing chamber 11 and the transition chamber 12. The make-up air channel 14 is located at the top of the chamber body 1. When the door 2 closes the operation hole 13, after the suction system is turned on, airflow is generated in the chamber body 1 from the transition chamber 12 into the processing chamber 11 through the make-up air channel 14. During this process, the floating sand in the processing chamber 11 and the transition chamber 12 can move with the airflow, further reducing the overflow of sand.

[0039] like Figure 1 and 5As shown, due to the weak airflow intensity below the transition chamber 12, and the possibility that sand remaining on the clamp 4 and tail wing blank 5 may slide down into the transition chamber 12 during the opening and closing of the door 2, a sand hopper 121 is provided below the transition chamber 12. Sand not carried by the airflow can slide into the sand hopper 121. A partition plate 3 is fixedly connected inside the sand hopper 121. The surface of the partition plate 3 is horizontal, and multiple sand drop holes 31 are opened through the partition plate 3. Sand that has fallen into the sand drop holes 31 is less likely to be affected by changes in the airflow above the partition plate 3. The bottom of the sand hopper 121 is connected to a sand recovery system.

[0040] like Figure 5 and 6 As shown, the fixture 4 includes a fixed base 41, a connecting base 42, and a clamping block 43. The clamping block 43 is divided into a fixed block 431 and a sliding block 432. The fixed base 41 is fixedly connected to the door 2. The connecting base 42 is rotatably mounted on the fixed base 41. The fixed block 431 is fixedly connected to the connecting base 42. The sliding block 432 is slidably mounted relative to the connecting base 42 in a horizontal direction. The fixed block 431 and the sliding block 432 are used to clamp the process flash plates 51 on opposite sides of the tail wing blank 5, respectively. Both the fixed block 431 and the sliding block 432 have clamping grooves 433 on the side facing the tail wing blank 5. The fixture 4 also includes a drive member 46 for controlling the movement of the sliding block 432. The drive member 46 controls the sliding block 432 to move closer to the fixed block 431. Finally, the process flash plates 51 on both sides of the tail wing blank 5 are respectively embedded in the clamping grooves 433 of the sliding block 432 and the fixed block 431 and abut against the groove wall of the clamping groove 433, thereby realizing the clamping and fixing of the tail wing blank 5 by the fixture 4. The process flash plate 51 at the end of the tail wing blank 5 abuts against the surface of the connecting seat 42. The rotation axis of the connecting seat 42 relative to the fixed seat 41 is vertical. The fixed seat 41 is provided with a motor for driving the rotation of the connecting seat 42. When the connecting seat 42 rotates, the clamping block 43 and the tail wing blank 5 on it also rotate, so that the entire surface of the tail wing blank 5 can be sprayed by the spray gun 15.

[0041] like Figure 5 As shown, in this embodiment, the driving component 46 is a cylinder, located inside the connecting seat 42. The piston rod of the cylinder extends from the connecting seat 42, and the sliding block 432 is fixedly connected to the end of the piston rod. An isolation bellows 48 is connected between the sliding block 432 and the connecting seat 42, and the isolation bellows 48 is sleeved on the outside of the piston rod of the cylinder. The gap between the piston rod of the cylinder and the connecting seat 42, where they slide against each other, is sealed by the isolation bellows 48, preventing sand from accumulating there and facilitating the long-term normal use of the clamp 4. The air pipes and electrical wires required by the clamp 4 are all passed through the rotating shaft tube 23 to reach the door 2 and the fixed seat 41.

[0042] like Figure 1 and 5As shown, a protective plate 24 is installed on the side of the door 2 facing the clamp 4. When the tail wing blank 5 is located in the processing chamber 11, the protective plate 24 is located on the side of the door 2 facing the spray gun 15, and the tail wing blank 5 is located between the spray gun 15 and the protective plate 24. Two edges of the protective plate 24 are integrally formed with bent portions 241, and the bent portions 241 are inclined on the side closer to the tail wing blank 5. In this embodiment, the protective plate 24 is a manganese steel plate. During the process of spraying sand towards the tail wing blank 5 by the spray gun 15, the sand that passes over the tail wing blank 5 or the sand that bounces off the surface of the tail wing blank 5 is likely to hit the surface of the protective plate 24 directly, rather than the surface of the door 2, thus playing a role in isolating and protecting the structure of the door 2. The bent portion 241 is designed to increase the interception range of the sand.

[0043] The implementation principle of the automobile rear spoiler sandblasting treatment device in this application embodiment is as follows:

[0044] The operator loads the material into the transition chamber 12, places the tail wing blank 5 on the clamp 4 on the door 2 and fixes it with the clamp 4. The door 2 is rotated 180°, and the clamp 4 and tail wing blank 5, which were originally in the processing chamber 11, come to the transition chamber 12. The operator can remove the displacement blank after sandblasting. The clamp 4 and tail wing blank 5, which were originally in the transition chamber 12, enter the processing chamber 11 and are sandblasted by the spray gun 15.

[0045] Example 2:

[0046] like Figure 7 and 8 As shown, the difference from the above embodiment is that in this embodiment, the clamping blocks 43 of the fixture 4 are all sliding blocks 432, that is, two clamping blocks 43 are slidably arranged on a single connecting seat 42, and the two clamping blocks 43 are respectively located on opposite sides of the tail fin blank 5; in this embodiment, the driving component 46 is a propulsion cylinder, and the two ports of the propulsion cylinder are respectively located on opposite sides of the tail fin blank 5, and the pipe openings face the tail fin blank 5. The clamping blocks 43 slide at the pipe openings of the propulsion cylinder, similar to the piston of the cylinder. The propulsion cylinder is connected to an external air source. When the air pressure inside the cylinder increases, the clamping blocks 43 move towards the tail fin blank 5. When a negative pressure is generated inside the propulsion cylinder, the clamping blocks 43 move away from the tail fin blank 5. The clamping grooves 433 on the clamping blocks 43 are directly opposite the process flash plate 51.

[0047] like Figure 7 and 8As shown, the fixture 4 also includes positioning blocks 44 and a positioning power source 47. The positioning blocks 44 and the connecting seat 42 slide relative to each other. There are two positioning blocks 44, which are located on opposite sides of the tail fin blank 5. The surface shape of the positioning block 44 facing the tail fin blank 5 corresponds to the side wall shape of the tail fin blank 5. The positioning power source 47 is an electric bidirectional lead screw. The bidirectional lead screw and the connecting seat 42 are rotatably connected. Both positioning blocks 44 are threadedly connected to the bidirectional lead screw. The rotation of the bidirectional lead screw can move the two positioning blocks 44 closer to or further away from each other. In the projection along the surface of the vertical door 2, the two positioning blocks 44 are symmetrical with respect to the rotation axis of the door 2. That is, when the two positioning blocks 44 simultaneously abut against the tail fin blank 5, the tail fin blank 5 is located at the center position of the projection along the surface of the vertical door 2. In order to reduce the influence of sand on the bidirectional lead screw, the isolation corrugated pipe 48 in this embodiment is sleeved on the outside of the bidirectional lead screw and connected between the connecting seat 42 and the positioning blocks 44.

[0048] like Figure 7 and 8 As shown, the sliding direction of the positioning block 44 is parallel to the sliding direction of the clamping block 43. When the clamping groove 433 on the clamping block 43 is engaged with the process flash plate 51, the pressure of the groove wall of the clamping groove 433 on the surface of the process flash plate 51 is not large, and the stability of the tail wing blank 5 is not high at this time. A reinforcing push rod 45 is slidably arranged between the propulsion cylinder and the connecting seat 42. There are two reinforcing push rods 45, and each reinforcing push rod 45 is located between a clamping block 43 and a positioning block 44. The sliding direction of the reinforcing push rod 45 is perpendicular to the sliding direction of the clamping block 43. A return spring 451 is connected between the reinforcing push rod 45 and the connecting seat 42. In its natural state, the reinforcing push rod 45 has a tendency to move closer to the positioning block 44. Both the positioning block 44 facing the clamping block 43 and the reinforcing push rod 45 facing the positioning block 44 are provided with wedge surfaces. When the positioning block 44 moves away from the tail fin blank 5, the wedge surfaces of the two move together and generate a vertical pushing force, causing the reinforcing push rod 45 to move closer to the clamping block 43 and abut against the surface of the clamping block 43. The clamping block 43 is subjected to the squeezing action of the reinforcing push rod 45, and the clamping groove 433 tends to narrow in width, which enhances the clamping effect on the process flash plate 51.

[0049] The implementation principle of the automobile rear spoiler sandblasting treatment device in this application embodiment is as follows:

[0050] Since the specific outline shape and size of the process flash plate 51 are highly uncertain, the fixture 4 first positions the tail wing blank 5 through the positioning block 44, places the workpiece on the connecting seat 42, drives the two positioning blocks 44 to move towards each other and simultaneously abut against the tail wing blank 5, at which point the tail wing blank 5 achieves a centered position adjustment; then, without releasing the positioning block 44, the air pressure in the propulsion cylinder is increased, and the two clamping blocks 43 simultaneously approach the tail wing blank 5 and cooperate with the process flash plate 51 through the clamping groove 433. Since the pressure behind the two clamping blocks 43 is the same, when the two cooperate with the process flash plate 51 at the same time, the tail wing blank 5 will not be displaced due to uneven force. When both clamping blocks 43 are pressed against the process flash plate 51 and remain stationary, the two positioning blocks 44 simultaneously move away from the tail wing blank 5 and push the reinforcing push rod 45 through the wedge surface transmission. After the reinforcing push rod 45 moves, it abuts against the clamping blocks 43, making it impossible for the clamping blocks 43 to move easily. At the same time, due to the narrowing of the clamping groove 433, the positions of the tail wing blank 5 and the process flash plate 51 are further fixed. Compared with Embodiment 1, the clamping fixture 4 in this embodiment adapts to the irregular process flash plate 51 through the process of positioning first and then clamping, so that the tail wing blank 5 has higher positional accuracy. Under the premise that the mechanical cantilever controlling the movement of the spray gun 15 only performs two-dimensional movement, the surface of the tail wing blank 5 has a more uniform sandblasting effect.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sand-blasting device for automobile spoiler, comprising a bin body (1), a processing chamber (11) is arranged in the bin body (1), a spray gun (15) is arranged in the processing chamber (11), characterized in that: The tail wing blank (5) has an integrally formed edge profile with a process flash plate (51), and the compartment (1) is provided with a clamp (4) for holding the process flash plate (51). The clamp (4) includes multiple clamping blocks (43), connecting seats (42), positioning blocks (44), positioning power sources (47) and driving components (46). The clamping blocks (43) are all sliding blocks (432), and the two sliding blocks (432) are located on opposite sides of the tail wing blank (5). The positioning block (44) and the connecting seat (42) slide relative to each other. There are two positioning blocks (44), which are located on opposite sides of the tail wing blank (5). The driving component (46) is a propulsion cylinder. A reinforcing push rod (45) is slidably arranged between the connecting seat (42) and the propulsion cylinder. There are two reinforcing push rods (45). Each reinforcing push rod (45) is located between a clamping block (43) and a positioning block (44). The sliding direction of the reinforcing push rod (45) is perpendicular to the sliding direction of the clamping block (43). A return spring (451) is connected between the reinforcing push rod (45) and the connecting seat (42). In its natural state, the reinforcing push rod (45) has a tendency to move closer to the positioning block (44). The positioning block (44) facing the clamping block (43) and the reinforcing push rod (45) facing the positioning block (44) are both provided with wedge surfaces. When the positioning block (44) moves away from the tail wing blank (5), the wedge surfaces of the two abut against each other and generate a vertical pushing force, causing the reinforcing push rod (45) to move closer to the clamping block (43) and abut against the surface of the clamping block (43). The clamping block (43) has a clamping groove (433), and the process flash plate (51) is located in the clamping groove (433) and abuts against the groove wall of the clamping groove (433).

2. The sandblasting device for a spoiler of a vehicle according to claim 1, wherein: The positioning power source (47) is an electric bidirectional lead screw. The bidirectional lead screw and the connecting seat (42) are rotatably connected. Both positioning blocks (44) are threadedly connected to the bidirectional lead screw. The isolation bellows (48) is sleeved on the outside of the bidirectional lead screw and connected between the connecting seat (42) and the positioning blocks (44).

3. The automobile rear spoiler sandblasting device according to claim 2, characterized in that: The clamp (4) also includes a fixed seat (41), and the connecting seat (42) is rotatably mounted on the fixed seat (41). When the spray gun (15) sandblasts the tail wing blank (5), the fixed seat (41) and the chamber (1) are relatively fixed.

4. A sandblasting device for automobile rear spoilers according to any one of claims 1-3, characterized in that: An operation hole (13) is provided on the chamber body (1), and the operation hole (13) is connected to the processing chamber (11). A chamber door (2) is rotatably connected to the chamber body (1) and inside the operation hole (13). The rotation axis of the chamber door (2) relative to the chamber body (1) is the line of symmetry of the shape of the chamber door (2). Two clamps (4) are provided, and the two clamps (4) are located on opposite sides of the chamber door (2) and are independent of each other.

5. The automobile rear spoiler sandblasting device according to claim 4, characterized in that: A gap is left between the door (2) and the wall of the operating hole (13). An expansion body (21) is provided on the edge of the door (2) or the wall of the operating hole (13). When the door (2) closes the operating hole (13), the expansion body (21) simultaneously abuts against the wall of the door (2) and the operating hole (13). A controller is provided on the body (1) to control the expansion or contraction of the expansion body (21).

6. The sandblasting device for automobile rear spoiler according to claim 5, characterized in that: A rotating shaft tube (23) is fixedly connected to the door (2). The axis of the rotating shaft tube (23) is the rotation axis of the door (2) relative to the body (1). The door (2) is rotatably connected to the body (1) through the rotating shaft tube (23). The expansion body (21) is located on the door (2). The expansion body (21) is an elastic inflation tube. The elastic inflation tube is connected to the door (2) along the edge contour of the door (2). The controller is an air pump. A connecting air pipe (212) is connected between the air pump and the elastic inflation tube. The connecting air pipe (212) passes through the interior of the rotating shaft tube (23).

7. The automobile rear spoiler sandblasting device according to claim 4, characterized in that: It also includes a suction system for generating a negative pressure airflow within the processing chamber (11); The chamber (1) is also provided with a transition chamber (12), which is connected to the processing chamber (11) through an operation hole (13). The chamber (1) is provided with a make-up air channel (14), which is connected to the processing chamber (11) and the transition chamber (12).

8. The automobile rear spoiler sandblasting device according to claim 7, characterized in that: A sand hopper (121) is provided below the transition chamber (12), and the port of the air supply channel (14) is located above the transition chamber (12). An isolation plate (3) is fixedly connected inside the sand hopper (121), and multiple sand drop holes (31) are provided through the isolation plate (3).

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