An auxiliary tool for spraying an automobile end plate

Abstract

The utility model discloses an auxiliary tool for automobile end plate spraying belongs to automobile end plate spraying equipment technical field. The device includes the base, is equipped with positioning unit, support unit and pressure unit in proper order on the base, the upper surface of base is equipped with T type slide rail, the both ends of base along length direction are equipped with riser, the riser is opened and is equipped with pin hole, positioning unit includes sliding seat, positioning pin and locking bolt, support unit includes support column and elastic support block, pressure unit includes pressure arm, adjusting screw rod and pressure block, through the sliding fit between T type slide rail and sliding seat, cooperate locking bolt and realize the positioning adaptation of different length automobile end plate, through the adaptation of the clamping between support column and elastic support block, the convenient replacement of different shape elastic support block, through the pin shaft hinge between the pin hole of riser and pressure arm, the end plate loading and unloading are facilitated, realize the stable pressure of different thickness end plate.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive end panel spraying equipment, and in particular to an auxiliary tooling for automotive end panel spraying. Background Technology

[0002] Automotive end panels are structural components in various automotive systems that serve to support, connect, protect, or optimize functions. They are not single parts, but rather a collective term for diverse components designed according to installation location and functional requirements, commonly found in core systems such as body, suspension, powertrain, and battery. In the field of automotive end panel painting, auxiliary tooling for automotive end panel painting is a special auxiliary equipment specifically designed to assist in the painting operation of automotive end panels. Its core function is to ensure the stability of the end panel position, the absence of surface obstruction, and the uniformity of the coating during the painting process by positioning, supporting, and fixing the end panel, thus providing reliable assurance for the painting process.

[0003] The existing auxiliary tooling devices for painting the end of automobiles usually consist of a base with fixed mounting holes, a positioning pin, a support seat, and a clamping buckle. When the device fixes the end plate of the automobile, the positioning holes of the end plate of the automobile need to be aligned with the positioning pin and fitted together. Then the end plate of the automobile is supported by the support seat and the clamping buckle is fastened to achieve fixation. When it is necessary to fix car end plates of different sizes, the bolts need to be removed, the original clamping clips need to be taken off, and the positioning pins and support seats need to be replaced. However, this has some drawbacks: First, the positioning pins and support seats are usually made of rigid structures and welded to the base, so their position and shape cannot be adjusted. To adapt to car end plates of different sizes and curved surfaces, frequent disassembly and even cutting and replacement of parts are required, making the changeover operation cumbersome and inefficient. Second, the clamping clips are generally fixed in height and cannot adjust the clamping force according to the thickness of the car end plate. Moreover, if the car end plate has a curved surface, the gap between the support seat and the curved surface of the car end plate is large, which can easily lead to the end plate being too loose and shifting or too tight and being damaged, affecting the stability of the spraying. Utility Model Content

[0004] This utility model provides an auxiliary tooling for automotive end panel painting, which can solve the problem of poor adaptability to automotive end panels in existing auxiliary tooling for automotive end panel painting.

[0005] An auxiliary tooling for painting automotive end panels includes a base, on which a positioning unit, a support unit, and a clamping unit are sequentially provided. The upper surface of the base is provided with a T-shaped slide rail, and the two ends of the base along the length direction are provided with upright plates, and pin holes are opened on the upright plates. The positioning unit includes a sliding seat, a positioning pin, and a locking bolt; The sliding seat is slidably engaged with the T-shaped slide rail; The positioning pin is located on the upper surface of the sliding seat; The locking bolt passes through the sliding seat and its end abuts against the side wall of the T-shaped slide rail; The support unit includes a support column and an elastic support block; The support column is disposed on the upper surface of the base, and a square groove is provided at the top of the support column; The bottom of the elastic support block is provided with a square protrusion that matches the square groove; The clamping unit includes a clamping arm, an adjusting screw, and a clamping block; One end of the pressure arm is hinged to the pin hole of the vertical plate via a pin. The adjusting screw is connected to the end of the pressure arm away from the hinge end; The pressure block is located at one end of the adjusting screw near the end plate.

[0006] Preferably, the T-shaped slide rail is horizontally and symmetrically arranged on the base along the length direction of the base, and the upright plate is symmetrically welded to both ends of the base along the length direction.

[0007] Preferably, the bottom of the sliding seat is provided with a protrusion that is adapted to the T-shaped slide rail, and the protrusion is embedded in the T-shaped slide rail to form a sliding fit.

[0008] Preferably, the positioning pin is vertically welded to the center of the upper surface of the sliding seat, and the top of the positioning pin has a hemispherical structure.

[0009] Preferably, the top of the elastic support block is an arc-shaped contact surface.

[0010] Preferably, the pressure arm has an L-shaped structure, and a through hole adapted to the pin is opened at one end of the pressure arm near the vertical plate. The pin passes through the through hole and forms a hinge with the pin hole of the vertical plate.

[0011] Preferably, the end of the pressure arm away from the hinge end has an internal threaded hole, the adjusting screw and the internal threaded hole form a threaded engagement, and the pressure block is welded to the top of the adjusting screw.

[0012] Preferably, the positioning unit is provided in a plurality of parts, including a lateral positioning component and a longitudinal positioning component; The longitudinal positioning component also includes a longitudinal slider. The upper surface of the slider is provided with a transverse groove arranged along the width direction of the base. The bottom of the longitudinal slider is provided with a protrusion that matches the transverse groove. The longitudinal slider slides in cooperation with the transverse groove. The positioning pin is provided on the upper surface of the longitudinal slider.

[0013] Preferably, the inner side of the upright plate is provided with a limiting boss, which can abut against the side of the pressure arm near the hinge end.

[0014] Preferably, the support column is a cylindrical structure, and the bottom of the support column is connected to the base by bolts; The adjusting screw has a handle at the end away from the pressure block, and the handle is welded and fixed to the adjusting screw.

[0015] The beneficial effects of this utility model are as follows: Through the sliding engagement between the T-shaped slide rail on the base and the sliding seat of the positioning unit, and with the locking bolt passing through the sliding seat and pressing against the side wall of the T-shaped slide rail, the position of the sliding seat along the T-shaped slide rail can be flexibly adjusted. This, in turn, drives the positioning pin on the sliding seat to adjust the lateral spacing, achieving positioning adaptation for automotive end plates of different lengths. This significantly improves the versatility of the tooling and allows for adaptation to positioning holes on asymmetrical automotive end plates. Simultaneously, through the adaptive engagement between the square groove at the top of the support column in the support unit and the square protrusion at the bottom of the elastic support block, it is easy to replace elastic support blocks with different top shapes, enabling the elastic support blocks to fit tightly with curved end plates such as rear wing end plates and arc-shaped reinforcing rib end plates. The tight fit avoids the problems of end plate suspension and uneven force caused by poor fit between traditional rigid support blocks and curved end plates. Furthermore, the flexible material of the elastic support block prevents the end plate from being damaged, ensuring the structural integrity of the end plate before coating. In addition, the pin hinge between the pin holes of the upright plates at both ends of the base and the pressure arm of the clamping unit allows the pressure arm to rotate around the pin to a clearance position for easy end plate loading and unloading. Then, through the connection between the pressure arm away from the hinge end and the adjusting screw, rotating the adjusting screw causes the pressure block at its top to approach and press against the upper surface of the end plate, achieving stable clamping of end plates of different thicknesses. This prevents the end plate from shifting due to airflow impact or vibration during coating, ensuring the consistency of the coating thickness and improving coating quality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the auxiliary tooling used for painting the end panels of this automobile. Figure 2 This is an isometric view of the auxiliary tooling used for painting the end panels of this automobile. Figure 3 This is a top view of the auxiliary tooling used for painting the end panels of this automobile.

[0017] Explanation of reference numerals in the attached figures: 1. Base; 2. T-shaped slide rail; 3. Upright plate; 31. Limiting boss; 4. Positioning unit; 41. Sliding seat; 42. Positioning pin; 43. Locking bolt; 44. Longitudinal slider; 45. Transverse groove; 5. Support unit; 51. Support column; 52. Elastic support block; 521. Square protrusion; 6. Pressing unit; 61. Pressing arm; 62. Adjusting screw; 63. Pressing block; 64. Handle. Detailed Implementation

[0018] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0019] like Figures 1 to 3 As shown in the figure, an auxiliary tooling for painting automotive end panels provided in this embodiment of the utility model includes a base 1, on which a positioning unit 4, a support unit 5 and a pressing unit 6 are sequentially provided. A T-shaped slide rail 2 is provided on the upper surface of the base 1, and upright plates 3 are provided at both ends of the base 1 along the length direction. Pin holes are provided on the upright plates 3. The positioning unit 4 includes a sliding seat 41, a positioning pin 42, and a locking bolt 43; The sliding seat 41 is slidably engaged with the T-shaped slide rail 2; The positioning pin 42 is provided on the upper surface of the sliding seat 41; The locking bolt 43 passes through the sliding seat 41 and its end abuts against the side wall of the T-shaped slide rail 2; The support unit 5 includes a support column 51 and an elastic support block 52; The support column 51 is disposed on the upper surface of the base 1, and a square groove is provided at the top of the support column 51; The bottom of the elastic support block 52 is provided with a square protrusion 521 that matches the square groove; The clamping unit 6 includes a clamping arm 61, an adjusting screw 62, and a clamping block 63; One end of the pressure arm 61 is hinged to the pin hole of the vertical plate 3 via a pin. The adjusting screw 62 is connected to the end of the pressure arm 61 away from the hinge end; The pressure block 63 is located at one end of the adjusting screw 62 near the end plate.

[0020] The base 1 provides the basic support for the entire tooling. The sliding engagement between the T-shaped slide rail 2 and the sliding seat 41 is to solve the problem that the existing tooling positioning unit 4 cannot adapt to end plates of different lengths. By moving the sliding seat 41 along the T-shaped slide rail 2, the lateral spacing of the positioning pins 42 can be adjusted, thereby adapting to end plates of different lengths. The locking bolt 43 passes through the sliding seat 41 and abuts against the side wall of the T-shaped slide rail 2, which can fix the position of the sliding seat 41 after it is adjusted to the correct position, thus preventing the sliding seat 41 from shifting during spraying and causing positioning failure. The support column 51 is fixed to the upper surface of the base 1. Its top square groove is adapted to the bottom square protrusion 521 of the elastic support block 52. The problem of poor fit between the traditional rigid support block and the curved end plate can be solved by replacing the elastic support block 52 with different top shapes to adapt to different curved end plates. At the same time, the elastic material can prevent the end plate from being crushed. The pin hole on the upright plate 3 is hinged to the pressure arm 61, which can realize the rotation of the pressure arm 61, which facilitates the loading, unloading and clamping of the end plate. The connection between the adjusting screw 62 and the pressure arm 61 and the setting of the pressure block 63 can change the clamping force of the pressure block 63 on the end plate by adjusting the height of the adjusting screw 62, adapting to end plates of different thicknesses and ensuring the stability of the end plate during spraying.

[0021] The T-shaped slide rail 2 is horizontally and symmetrically arranged on the base 1 along the length direction of the base 1, and the upright plate 3 is symmetrically welded to both ends of the base 1 along the length direction.

[0022] The T-shaped slide rails 2 are horizontally symmetrically arranged along the length of the base 1 to ensure consistent force and adjustment of the positioning unit 4 on both sides of the base 1. This avoids deviations in the spacing of the positioning pins 42 on both sides due to asymmetrical slide rail arrangement, thereby ensuring the horizontality of the end plate during positioning and preventing the end plate from tilting and affecting the uniformity of spraying. The upright plates 3 are symmetrically welded to both ends of the base 1 along its length. The welding connection enhances the connection strength between the upright plates 3 and the base 1, preventing the upright plates 3 from shaking due to force during spraying. The symmetrical arrangement allows the clamping units 6 on both sides to apply uniform clamping force to the end plates, preventing deformation of the end plates due to excessive force on one side and ensuring spraying quality.

[0023] The bottom of the sliding seat 41 is provided with a protrusion that is adapted to the T-shaped slide rail 2, and the protrusion is embedded in the T-shaped slide rail 2 to form a sliding fit.

[0024] The bottom protrusion of the sliding seat 41 is fitted into the T-shaped slide rail 2. The protrusion is embedded in the slide rail to restrict the vertical displacement of the sliding seat 41, retaining only the sliding freedom along the length of the slide rail. This ensures the stability of the sliding seat 41 during adjustment. At the same time, this embedded sliding fit reduces the contact gap between the sliding seat 41 and the slide rail, preventing the sliding seat 41 from lateral shaking due to vibration during spraying. This ensures the accuracy of the positioning pin 42 in positioning the end plate, thereby improving the uniformity of the sprayed coating.

[0025] The positioning pin 42 is vertically welded to the center of the upper surface of the sliding seat 41, and the top of the positioning pin 42 is a hemispherical structure.

[0026] The locating pin 42 is vertically welded to the center of the upper surface of the sliding seat 41. This ensures that the positioning center of the locating pin 42 for the end plate is aligned with the force center of the sliding seat 41, preventing uneven force on the end plate due to misalignment of the locating pin 42. This prevents the end plate from shifting or deforming during the spraying process. Vertical welding also ensures the perpendicularity of the locating pin 42, preventing it from tilting and causing the end plate positioning hole to fail to fit properly, thus improving positioning efficiency. The top of the locating pin 42 is designed with a hemispherical structure to solve the problem of traditional sharp tips easily scratching the edge of the end plate positioning hole. The hemispherical top reduces the contact stress with the end plate positioning hole, preventing scratches on the end plate surface and protecting the integrity of the end plate's appearance. It also facilitates quick insertion of the locating pin 42 into the end plate positioning hole, improving operational convenience.

[0027] The top of the elastic support block 52 is an arc-shaped fitting surface.

[0028] The top of the elastic support block 52 is designed with an arc-shaped contact surface to adapt to automotive end plates with curved structures such as rear wing end plates and arc-shaped reinforcing rib end plates. This solves the problem of poor fit between traditional flat support blocks and curved end plates, which can easily lead to local suspension. The arc-shaped contact surface can make close contact with the curved surface of the end plate, increasing the support area and making the end plate more evenly stressed. This prevents the end plate from deforming due to excessive local stress during spraying. At the same time, the close fit can limit the lateral displacement of the end plate, preventing the end plate from shaking under the impact of airflow, ensuring the consistency of the spray coating thickness, improving the spraying quality, and the arc-shaped contact surface of the elastic material can buffer the support force and prevent the end plate surface from being pressed with marks.

[0029] The pressure arm 61 has an L-shaped structure. One end of the pressure arm 61 near the vertical plate 3 has a through hole adapted to the pin shaft. The pin shaft passes through the through hole and forms a hinge with the pin shaft hole of the vertical plate 3.

[0030] The pressure arm 61 is designed with an L-shaped structure to optimize the force and spatial layout of the pressure arm 61. The L-shaped structure allows sufficient space for the end plate to be installed and removed when the pressure arm 61 rotates, and also allows the adjusting screw 62 to be accurately aligned with the edge of the end plate when clamping, avoiding interference between the pressure arm 61 and the end plate or other components. The through hole and the pin at the end of the pressure arm 61 near the vertical plate 3 are hinged to achieve flexible rotation of the pressure arm 61. The adaptability design of the through hole and the pin reduces the frictional resistance at the hinge, making the pressure arm 61 rotate smoothly and facilitating workers to quickly switch between avoidance and working states. At the same time, the hinge structure can distribute the clamping force on the pressure arm 61, preventing the pressure arm 61 from breaking due to excessive local stress and extending the service life of the pressure arm 61.

[0031] The end of the pressure arm 61 away from the hinge end has an internal threaded hole, the adjusting screw 62 forms a threaded engagement with the internal threaded hole, and the pressure block 63 is welded to the top of the adjusting screw 62.

[0032] The threaded hole of the pressure arm 61, located away from the hinge end, is designed to engage with the threaded screw of the adjusting screw 62. This design allows for height adjustment of the adjusting screw 62, addressing the issue that fixed-height clamping structures cannot accommodate end plates of varying thicknesses. By rotating the adjusting screw 62, the distance between the pressure block 63 and the upper surface of the end plate can be changed, thereby adjusting the clamping force. This ensures that end plates of different thicknesses can be stably clamped, preventing end plate displacement during spraying. The pressure block 63 is welded to the top of the adjusting screw 62. This welded connection ensures the connection strength between the pressure block 63 and the adjusting screw 62, preventing the pressure block 63 from falling off during spraying and causing clamping failure. Simultaneously, the pressure block 63 directly contacts the end plate, and its fixed connection ensures that the clamping force is stably transmitted to the end plate, preventing uneven force distribution on the end plate due to loosening of the pressure block 63 and improving clamping reliability.

[0033] The positioning unit 4 is provided with several components, including a horizontal positioning component and a vertical positioning component; The longitudinal positioning component also includes a longitudinal slider 44. The upper surface of the sliding seat 41 is provided with a transverse groove 45 arranged along the width direction of the base 1. The bottom of the longitudinal slider 44 is provided with a protrusion that matches the transverse groove 45. The longitudinal slider 44 and the transverse groove 45 are slidably engaged. The positioning pin 42 is provided on the upper surface of the longitudinal slider 44.

[0034] The positioning unit 4 is divided into a transverse positioning component and a longitudinal positioning component. It is designed to achieve bidirectional positioning adjustment of the end plate length and width, solving the problem that the traditional positioning unit 4 can only be adjusted in one direction and cannot adapt to end plates of different widths. The sliding engagement between the bottom protrusion of the longitudinal slider 44 and the transverse groove 45 on the sliding seat 41 allows the longitudinal slider 44 to move along the width direction of the base 1, thereby adjusting the spacing of the positioning pins 42 in the longitudinal positioning component to adapt to end plates of different widths. The positioning pins 42 are located on the upper surface of the longitudinal slider 44 and can accurately position the end plate in the width direction by moving the longitudinal slider 44, avoiding the end plate from shifting in the width direction. This bidirectional adjustment structure does not require replacing the entire positioning unit 4. It can adapt to end plates of various sizes by sliding adjustment alone, improving the versatility and adjustment efficiency of the tooling and reducing production changeover costs.

[0035] The inner side of the upright plate 3 is provided with a limiting boss 31, which can abut against the side of the pressure arm 61 near the hinge end.

[0036] A limiting boss 31 is provided on the inner side of the upright plate 3 to solve the problem of the pressure arm 61 having no limit when rotating upward and being prone to excessive rotation and collision with other parts. The limiting boss 31 abuts against the side of the pressure arm 61 near the hinge end, which can limit the maximum upward rotation angle of the pressure arm 61 and prevent the pressure arm 61 from rotating excessively and causing the adjusting screw 62 or the pressure block 63 to collide with the base 1, positioning unit 4 and other parts, thus protecting the integrity of the tooling structure. At the same time, the limiting effect after abutting allows the pressure arm 61 to stay stably in the avoidance position, without the need for workers to fix the pressure arm 61, which allows workers to focus on the loading and unloading of the end plate, improves work efficiency, and prevents the pressure arm 61 from rotating on its own due to vibration in the avoidance position, ensuring the safety of the end plate loading and unloading process.

[0037] The support column 51 has a cylindrical structure, and the bottom of the support column 51 is connected to the base 1 by bolts; The adjusting screw 62 is provided with a handle 64 at the end away from the pressure block 63, and the handle 64 is welded and fixed to the adjusting screw 62.

[0038] The support column 51 is designed with a cylindrical structure to ensure more even stress distribution and prevent breakage due to stress concentration in traditional polygonal structures. The cylindrical structure can evenly transfer the weight of the end plate to the base 1, improving support stability. The bottom of the support column 51 is connected to the base 1 by bolts, which facilitates disassembly and replacement. When the support column 51 is worn or damaged, it can be replaced simply by removing the bolts, without replacing the entire tooling, thus reducing maintenance costs. A handle 64 is provided at the end of the adjusting screw 62 away from the pressure block 63 to solve the problem of difficult rotation of traditional handleless adjusting screws. The handle 64 increases the force application area for the worker, making it easier to rotate the adjusting screw 62 and improving the convenience of the clamping operation. The welding fixation between the handle 64 and the adjusting screw 62 ensures the connection strength and prevents the handle 64 from loosening or falling off during rotation, ensuring the stability and safety of the adjustment operation.

[0039] In summary, the auxiliary tooling for automotive end plate painting provided by this utility model embodiment works as follows: Before the end plate painting operation, the pressure arm 61 in the clamping unit 6 is rotated upward around the pin axis on the vertical plate 3 until the side of the pressure arm 61 near the hinge end abuts against the limiting boss 31 on the inner side of the vertical plate 3, so that the pressure arm 61 is stably in a clearance state, leaving space for end plate loading and unloading. Then, according to the length of the end plate to be painted, the locking bolt 43 of the sliding seat 41 in the positioning unit 4 is loosened, and the sliding seat 41 is pushed to move along the T-shaped slide rail 2 on the base 1, adjusting the spacing of the positioning pins 42 in the transverse positioning assembly. Then, according to the width of the end plate, the locking structure of the longitudinal slider 44 in the longitudinal positioning assembly is loosened, and the longitudinal slider 44 is pushed to move along the transverse groove 45 on the sliding seat 41, adjusting the spacing of the positioning pins 42 in the longitudinal positioning assembly. After the spacing of the positioning pins 42 matches the positioning hole of the end plate, the locking bolt is tightened. The locking structure of 43 and longitudinal slider 44 fixes the position of the positioning unit 4. Then, according to the curved shape of the end plate, select the elastic support block 52 with an arc-shaped contact surface at the top, and insert the square protrusion 521 at the bottom of the block into the square groove at the top of the support column 51 to complete the assembly of the support unit 5. Then, place the end plate on the support unit 5, so that the positioning hole of the end plate fits into the positioning pin 42, and then rotate the pressure arm 61 downward to the working state. Hold the handle 64 at the end of the adjusting screw 62 and rotate the adjusting screw 62. By using the threaded engagement between the adjusting screw 62 and the threaded hole of the pressure arm 61, the pressure block 63 at the top of the adjusting screw 62 gradually approaches and presses against the upper surface of the end plate until the end plate is stably pressed. Finally, push the entire fixture to the spraying area for spraying. After the spraying is completed, rotate the adjusting screw 62 in the opposite direction to make the pressure block 63 disengage from the end plate, rotate the pressure arm 61 upward to the clearance state, and the end plate can be removed to complete one spraying auxiliary operation.

[0040] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. An auxiliary tooling for painting automotive end panels, comprising a base (1), wherein a positioning unit (4), a support unit (5), and a clamping unit (6) are sequentially provided on the base (1), characterized in that: The upper surface of the base (1) is provided with a T-shaped slide rail (2), and the two ends of the base (1) along the length direction are provided with upright plates (3), and the upright plates (3) are provided with pin holes. The positioning unit (4) includes a sliding seat (41), a positioning pin (42), and a locking bolt (43). The sliding seat (41) is slidably engaged with the T-shaped slide rail (2); The positioning pin (42) is located on the upper surface of the sliding seat (41); The locking bolt (43) passes through the sliding seat (41) and its end abuts against the side wall of the T-shaped slide rail (2); The support unit (5) includes a support column (51) and an elastic support block (52); The support column (51) is located on the upper surface of the base (1), and a square groove is provided at the top of the support column (51); The bottom of the elastic support block (52) is provided with a square protrusion (521) that is adapted to the square groove. The clamping unit (6) includes a clamping arm (61), an adjusting screw (62), and a clamping block (63); One end of the pressure arm (61) is hinged to the pin hole of the vertical plate (3) through a pin. The adjusting screw (62) is connected to the end of the pressure arm (61) away from the hinge end; The pressure block (63) is located at one end of the adjusting screw (62) near the end plate.

2. The auxiliary tooling for automotive end plate spraying according to claim 1, characterized in that: The T-shaped slide rail (2) is horizontally and symmetrically arranged on the base (1) along the length direction of the base (1), and the upright plate (3) is symmetrically welded to both ends of the base (1) along the length direction.

3. The auxiliary tooling for automotive end plate spraying according to claim 1, characterized in that: The bottom of the sliding seat (41) is provided with a protrusion that is adapted to the T-shaped slide rail (2), and the protrusion is embedded in the T-shaped slide rail (2) to form a sliding fit.

4. The auxiliary tooling for automotive end plate painting according to claim 1, characterized in that: The positioning pin (42) is vertically welded to the center of the upper surface of the sliding seat (41), and the top of the positioning pin (42) is a hemispherical structure.

5. The auxiliary tooling for automotive end plate painting according to claim 1, characterized in that: The top of the elastic support block (52) is an arc-shaped fitting surface.

6. The auxiliary tooling for automotive end plate spraying according to claim 1, characterized in that: The pressure arm (61) has an L-shaped structure. The end of the pressure arm (61) near the vertical plate (3) has a through hole that matches the pin. The pin passes through the through hole and forms a hinge with the pin hole of the vertical plate (3).

7. The auxiliary tooling for automotive end plate spraying according to claim 1, characterized in that: The pressure arm (61) has an internal threaded hole at one end away from the hinge end. The adjusting screw (62) is threaded into the internal threaded hole. The pressure block (63) is welded to the top of the adjusting screw (62).

8. The auxiliary tooling for automotive end plate painting according to claim 1, characterized in that: The positioning unit (4) is provided in several parts, including a horizontal positioning component and a vertical positioning component; The longitudinal positioning component also includes a longitudinal slider (44), the upper surface of the sliding seat (41) is provided with a transverse groove (45) arranged along the width direction of the base (1), the bottom of the longitudinal slider (44) is provided with a protrusion adapted to the transverse groove (45), the longitudinal slider (44) and the transverse groove (45) are slidably engaged, and the positioning pin (42) is provided on the upper surface of the longitudinal slider (44).

9. The auxiliary tooling for automotive end plate painting according to claim 1, characterized in that: The inner side of the upright plate (3) is provided with a limiting boss (31), which can abut against the side of the pressure arm (61) near the hinge end.

10. The auxiliary tooling for automotive end plate painting according to claim 1, characterized in that: The support column (51) is a cylindrical structure, and the bottom of the support column (51) is connected to the base (1) by bolts; The adjusting screw (62) is provided with a handle (64) at the end away from the pressure block (63), and the handle (64) is welded and fixed to the adjusting screw (62).

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