Spraying jig

Abstract

The utility model discloses a spraying jig. Belongs to the field of spraying devices, the spraying jig is used for fixing a decorative plate to be sprayed, at least one assembling support is arranged on the side, away from the spraying face, of the decorative plate, and the spraying jig comprises a cross beam and a spraying device, one end of the first supporting rod is connected with the cross beam, and the other end of the first supporting rod is suitable for being fixedly clamped with the assembly bracket; one end of the second supporting rod is connected with the cross beam, and the other end of the second supporting rod is suitable for supporting the assembling support in the direction opposite to the gravity direction. According to the spraying jig disclosed by the embodiment of the utility model, the spraying jig is used for clamping, limiting and upwards supporting the assembly bracket of the decorative plate through the first supporting rod and the second supporting rod respectively, so that the stability of connection between the decorative plate and the spraying jig is improved, and the decorative plate is prevented from shaking relative to the spraying jig; and the yield of the decorative plate is improved, and the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the field of spraying devices, in particular to a spraying jig. Background Art

[0002] When spraying the rear door decorative panel of a car, a special spraying fixture is required to fix the rear door decorative panel so that the rear door decorative panel moves along with the spraying conveyor line.

[0003] In the related art, the spraying jig is generally used to support the rear door decorative panel upward or suspend it at a hanging point to use the gravity of the rear door decorative panel to fix the rear door decorative panel. However, the spraying conveyor line will rise and fall or vibrate up and down during operation. The connection between the rear door decorative panel and the spraying jig is not stable enough, and the rear door decorative panel often falls off or is not sprayed properly, which not only affects the production efficiency of the rear door decorative panel but also increases the production cost. Utility Model Content

[0004] The present invention aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present invention proposes a spraying jig that can improve the stability of the connection between the decorative plate and the spraying jig and save production costs.

[0005] According to the spraying jig of the embodiment of the present invention, it is used to fix the decorative panel to be sprayed, and at least one assembly bracket is provided on the side of the tailgate decorative panel facing away from the spraying surface. The spraying jig includes: a crossbeam, which is suitable for being connected to the skid of the spray transmission line body; a first strut, one end of which is connected to the crossbeam, and the other end of which is suitable for being clamped and fixed to the assembly bracket; a second strut, one end of which is connected to the crossbeam, and the other end of which is suitable for supporting the assembly bracket in the opposite direction of gravity.

[0006] According to the spray jig of the embodiment of the present invention, the spray jig is connected to the slide through a cross beam so that the spray jig moves synchronously with the slide. The spray jig clamps and limits the assembly bracket of the decorative panel and supports it upward through the first support rod and the second support rod respectively, so as to improve the stability of the connection between the decorative panel and the spray jig, avoid the decorative panel from shaking relative to the spray jig, and improve the yield rate of the decorative panel, which is beneficial to improving production efficiency and reducing production costs.

[0007] According to some embodiments of the present invention, the first support rod includes: a first connecting rod and a limiting column, the first connecting rod has a connecting end and a fixed end, the limiting column has a head and a neck, the head is connected to the connecting end through the neck, the fixed end is connected to the crossbeam, the neck is suitable for being snapped into the assembly hole on the assembly bracket, and the end faces of the head and the connecting end are suitable for clamping the assembly bracket on both sides of the assembly bracket.

[0008] According to some embodiments of the present invention, the limiting column is detachably connected to the first connecting rod.

[0009] According to some embodiments of the present invention, there are multiple second struts, the crossbeam extends along a first direction perpendicular to the gravity direction, and in the first direction, at least one second strut is provided on both sides of the first strut.

[0010] According to some embodiments of the present invention, each of the second support rods is suitable for supporting a different assembly bracket.

[0011] According to some embodiments of the present invention, the second support rod includes: a second connecting rod and a support column, the support column is connected to the crossbeam through the second connecting rod, the axial direction of the support column is parallel to the first direction, and the support column is suitable for supporting the assembly bracket matched therewith.

[0012] According to some embodiments of the present invention, the assembly bracket is formed with an arc-shaped groove, the support column is a cylindrical pillar, and the side surface of the support column is suitable for fitting with the arc-shaped groove surface.

[0013] According to some embodiments of the present invention, the spray jig further includes: a sleeve, the crossbeam is suitable for being connected to the slide through the sleeve, and a locking hole is provided on the side wall of the sleeve; and a locking pin, the locking pin passes through the locking hole and is suitable for locking with the slide.

[0014] According to some embodiments of the present invention, the first support rod, the second support rod, the sleeve and the crossbeam are all made of 45 steel.

[0015] According to some embodiments of the present invention, the first support rod, the second support rod and the sleeve are all welded to the crossbeam.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of a spraying fixture according to an embodiment of the present utility model;

[0018] Figure 2 This is a front view of a spraying fixture according to an embodiment of the present utility model;

[0019] Figure 3 It is a rear view of the spraying jig according to an embodiment of the present utility model.

[0020] Figure 4It is a left view of the spraying fixture according to an embodiment of the present utility model.

[0021] Figure 5 It is a schematic diagram of the coordination between the spraying jig and the decorative piece according to an embodiment of the present utility model.

[0022] Figure 6 It is a partial structural diagram of the coordination between the spraying jig and the decorative piece according to an embodiment of the present utility model.

[0023] Figure 7 yes Figure 6 Enlarged view at point A.

[0024] Reference numerals:

[0025] Beam 1;

[0026] First support rod 2; first connecting rod 21; limiting column 22; head 221; neck 222;

[0027] Second support rod 3; second connecting rod 31; support column 32;

[0028] Sleeve 4; locking hole 41;

[0029] Spraying fixture 10;

[0030] Decorative panel 20; back door decorative panel 20a, assembly bracket 201; assembly hole 2011. DETAILED DESCRIPTION

[0031] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "length", "up", "down", "back", "left", "right", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0034] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or mutual communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0035] The following combination Figure 1-Figure 7 The spraying jig according to an embodiment of the present invention is described in detail.

[0036] Reference Figure 1-Figure 7 As shown, the spraying jig 10 is used to fix the decorative panel 20 to be sprayed. At least one assembly bracket 201 is provided on the side of the decorative panel 20 facing away from the spraying surface. The spraying jig 10 includes: a crossbeam 1, a first support rod 2 and a second support rod 3. The crossbeam 1 is suitable for being connected to the skid of the spray transmission line body. One end of the first support rod 2 is connected to the crossbeam 1, and the other end of the first support rod 2 is suitable for being clamped and fixed with the assembly bracket 201. One end of the second support rod 3 is connected to the crossbeam 1, and the other end of the second support rod 3 is suitable for supporting the assembly bracket 201 in the opposite direction of gravity.

[0037] The decorative panel 20 may be a rear door decorative panel 20a of the vehicle. The rear door decorative panel 20a may be installed on the rear door of the vehicle. The rear door decorative panel 20a may improve the aerodynamic performance of the rear door and realize personalized decoration of the vehicle.

[0038] The decorative panel 20 needs to be sprayed through a painting process during manufacturing. The surface of the decorative panel 20 sprayed with paint is the spraying surface, which is also the appearance surface (side A) of the decorative panel 20. The side of the decorative panel 20 facing away from the spraying surface is the assembly surface (side B). The assembly surface of the decorative panel 20 is provided with one or more assembly brackets 201, and the decorative panel 20 can be fixed to the tailgate through the assembly brackets 201.

[0039] When the decorative panel 20 is being sprayed, the spray jig 10 can fix and support the decorative panel 20. The spray jig 10 can be installed on a skid of the spray conveyor line. The skid can drive the spray jig 10 and the decorative panel 20 to move together, so that the decorative panel 20 can be moved to different workstations for spraying processes such as primer and topcoat.

[0040] Specifically, the crossbeam 1 of the spraying jig 10 is suitable for being directly or indirectly connected to the slide of the spraying transmission line. The spraying transmission line can drive the slide to move along the spraying stations in sequence, and the slide can drive the crossbeam 1 to move synchronously.

[0041] The first support rod 2 and the second support rod 3 of the spray jig 10 are both fixedly connected to the crossbeam 1. The first support rod 2 can be clipped and fixed to the assembly bracket 201 to limit the assembly bracket 201 and prevent the decorative panel 20 from shaking relative to the spray jig 10. The second support rod 3 can support the assembly bracket 201 in the direction opposite to the direction of gravity, wherein the direction of gravity is downward and the direction opposite to the direction of gravity is upward. In other words, the second support rod 3 can support the assembly bracket 201 upward to support the decorative panel 20. At the same time, because the assembly bracket 201 is located on the side of the decorative panel 20 facing away from the spraying surface, the spray jig 10's limiting and supporting of the assembly bracket 201 will not affect the spraying operation of the spray equipment on the spraying surface. In addition, the first support rod 2 and the second support rod 3 can keep the decorative panel 20 away from the crossbeam 1 and the slide to prevent the decorative panel 20 from interfering with the crossbeam 1 and the slide.

[0042] It should be noted that the first support rod 2 and the second support rod 3 can be matched with the same assembly bracket 201 , or the first support rod 2 and the second support rod 3 can be matched with different assembly brackets 201 .

[0043] In the above embodiment, the spray jig 10 is connected to the slide through the crossbeam 1 so that the spray jig 10 moves synchronously with the slide. The spray jig 10 clamps and limits the assembly bracket 201 of the decorative panel 20 and supports it upward through the first support rod 2 and the second support rod 3 respectively, so as to improve the stability of the connection between the decorative panel 20 and the spray jig 10, avoid the decorative panel 20 from shaking relative to the spray jig 10, and improve the yield rate of the decorative panel 20, which is beneficial to improve production efficiency and reduce production costs.

[0044] In some embodiments of the present invention, referring to Figure 1 、 Figure 4 、 Figure 6 and Figure 7As shown, the first support rod 2 includes: a first connecting rod 21 and a limiting column 22, the first connecting rod 21 has a connecting end and a fixed end, the limiting column 22 has a head 221 and a neck 222, the head 221 is connected to the connecting end through the neck 222, and the fixed end is connected to the crossbeam 1, the neck 222 is suitable for being snapped into the assembly hole 2011 on the assembly bracket 201, and the end faces of the head 221 and the connecting end are suitable for clamping the assembly bracket 201 on both sides of the assembly bracket 201.

[0045] The mounting bracket 201 of the decorative panel 20 may be a C-shaped bracket, and the mounting bracket 201 has a Y direction ( Figure 2 An assembly hole 2011 with an opening (in the left and right directions) is provided for being clamped and fixed with the rear door of the vehicle.

[0046] The first support rod 2 can be clamped with the assembly hole 2011 using the structure of the assembly bracket 201. Specifically, the first support rod 2 includes a connected first connecting rod 21 and a limiting column 22. The limiting column 22 is connected to the crossbeam 1 through the first connecting rod 21. The limiting column 22 has a head 221 and a neck 222. The head 221 is connected to the connecting end of the first connecting rod 21 through the neck 222. The diameter of the neck 222 is smaller than the diameter of the head 221. The neck 222 can be clamped into the assembly hole 2011 from the opening of the assembly hole 2011. The head 221 is located on the inner side of the assembly bracket 201, and the end face of the connecting end is located on the outer side of the assembly bracket 201. The head 221 and the end face of the connecting end can clamp the assembly bracket 201 on both sides of the assembly bracket 201 to achieve a firm connection between the first support rod 2 and the decorative panel 20.

[0047] In the above embodiment, the first support rod 2 is clamped with the assembly bracket 201 through the limiting column 22, which simplifies the operating steps in the fixed assembly while limiting the assembly bracket 201 and providing stable support, which can better prevent the decorative panel 20 from shaking relative to the spray jig 10. When the slide vibrates, the decorative parts are prevented from shaking relative to the spray jig 10, reducing the probability of the decorative panel 20 falling off, being damaged, and having a false spray, and improving the stability of the connection between the decorative panel 20 and the spray jig 10, thereby improving the production efficiency and yield rate of spraying and saving production costs.

[0048] In some embodiments of the present invention, the limiting column 22 is detachably connected to the first connecting rod 21 .

[0049] Among them, the limiting column 22 and the first connecting rod 21 can be detachably connected, the limiting column 22 and the first connecting rod 21 can be threadedly connected, and the neck 222 of the limiting column 22 and the connecting end of the first connecting rod 21 are connected together by the cooperation of internal and external threads, and the limiting column 22 and the first connecting rod 21 can also be clamped, and the neck 222 of the limiting column 22 and the connecting end of the first connecting rod 21 are connected together through the bayonet.

[0050] In the above embodiment, the limiting column 22 is detachably connected to the first connecting rod 21, which can better adapt to the size of the assembly bracket 201 of different decorative panels 20. At the same time, the limiting column 22 can be replaced according to different models of assembly brackets 201, so that the assembly bracket 201 and the first connecting rod 21 have a better match, thereby ensuring the stability of the connection between the decorative panel 20 and the spray fixture 10.

[0051] In some embodiments of the present invention, referring to Figure 1 As shown, there are multiple second struts 3 , and the crossbeam 1 extends along a first direction perpendicular to the direction of gravity. In the first direction, at least one second strut 3 is provided on both sides of the first strut 2 .

[0052] Wherein, a plurality of second support rods 3 are provided on the crossbeam 1, and the plurality of second support rods 3 can support the same assembly bracket 201 of the decorative panel 20 at multiple positions, or the plurality of second support rods 3 can support different assembly brackets 201 of the decorative panel 20 respectively. Figure 2 In the left and right directions, the crossbeam 1 can be a rectangular tubular beam extending along the first direction. In the first direction, at least one second brace 3 is provided on the left and right sides of the first brace 2. For example, three second braces 3 are provided on the left side of the first brace 2, and three second braces 3 are provided on the right side of the first brace 2.

[0053] In the above embodiment, in the extension direction of the beam 1, at least one second strut 3 is provided on both sides of the first strut 2. The multiple second struts 3 can enable the spray jig 10 to support the decorative panel 20 more stably. At the same time, the spray jig 10 makes the force on the decorative panel 20 uniform through the second struts 3 provided on both sides of the first strut 2, reduces the local stress concentration of the decorative panel 20, and enhances the stability of the spray jig 10 in supporting the decorative panel 20.

[0054] In some embodiments of the present invention, referring to Figure 5 and Figure 6 As shown, each second support rod 3 is suitable for supporting a different assembly bracket 201 .

[0055] Among them, the decorative panel 20 has multiple assembly brackets 201, and multiple second support rods 3 can respectively support different assembly brackets 201. The way in which each second support rod 3 supports the assembly bracket 201 can be diverse. For example, the second support rod 3 can support the assembly bracket 201 upward at the bottom end surface outside the assembly bracket 201. For another example, the second support rod 3 can be inserted into the assembly bracket 201 in the left and right directions, and support the top end surface inside the assembly bracket 201 upward.

[0056] In the above embodiment, the second support rod 3 supports different assembly brackets 201, so that the spraying jig 10 provides more uniform support force to the decorative panel 20, and at the same time limits the decorative panel 20 more, thereby enhancing the stability of the spraying jig 10 in positioning the decorative panel 20.

[0057] It should be noted that after the first strut 2 is engaged with the assembly hole 2011 of the assembly bracket 201, the first strut 2 has a weak limiting ability on the assembly bracket 201 in the circumferential direction of the assembly hole 2011. By arranging at least one second strut 3 on both sides of the first strut 2, and each second strut 3 supports a different assembly bracket 201, the second struts 3 on both sides of the first strut 2 limit the rotation of the decorative panel 20 around the axis of the assembly hole 2011, thereby improving the stability of the connection between the decorative panel 20 and the spray jig.

[0058] In some embodiments of the present invention, referring to Figure 1-Figure 3 As shown, the second support rod 3 includes: a second connecting rod 31 and a support column 32. The support column 32 is connected to the crossbeam 1 through the second connecting rod 31. The axial direction of the support column 32 is parallel to the first direction. The support column 32 is suitable for supporting the assembly bracket 201 matched therewith.

[0059] Each second brace 3 can provide support for a different assembly bracket 201. Specifically, the second brace 3 includes a second connecting rod 31 and a support column 32. The support column 32 is connected to the crossbeam 1 via the second connecting rod 31. The axial direction of the support column 32 is parallel to the first direction, that is, the axial direction of the support column 32 is parallel to the extension direction of the crossbeam 1. In other words, the support column 32 is a columnar structure extending in the left-right direction to increase the contact area between the support column 32 and the assembly bracket 201. The second brace 3 can be configured in different shapes according to different assembly brackets 201. Optionally, the second connecting rod 31 and the support column 32 can form a T-shaped or L-shaped structure.

[0060] In the above embodiment, the axial direction of the support column 32 is parallel to the extension direction of the beam 1, so as to increase the contact area between the support column 32 and the assembly bracket 201, so that the spraying jig 10 can provide stable and reliable support for the decorative panel 20, thereby preventing the decorative panel 20 from falling from the spraying jig 10 and preventing the assembly bracket 201 from being deformed by the support column 32.

[0061] In some embodiments of the present invention, an arcuate groove is formed on the end surface of the assembly bracket 201, and the support column 32 is a cylindrical pillar. The side surface of the support column 32 is suitable for fitting with the arcuate groove surface.

[0062] Among them, the end face of the assembly bracket 201 can be its external bottom end face or its internal top end face. The end face of the assembly bracket 201 can be perpendicular to the direction of gravity. An arc groove is formed on the end face of the assembly bracket 201, which is adapted to the cylindrical side shape of the support column 32, thereby increasing the contact area between the support column 32 and the end face, making the end face and the support column 32 fit more closely.

[0063] In the above embodiment, the side surface of the support column 32 is suitable for fitting with the arc groove surface on the end face of the assembly bracket 201 to increase the contact area between the assembly bracket 201 and the support column 32, increase the friction between the assembly bracket 201 and the support column 32, effectively prevent the assembly bracket 201 and the support column 32 from sliding or displacement due to vibration, improve the support effect, and maintain the support stability of the support column 32 on the assembly bracket 201.

[0064] In some embodiments of the present invention, the spray jig 10 further includes: a sleeve 4 and a locking pin. The crossbeam 1 is suitable for being connected to the slide through the sleeve 4. A locking hole is provided on the side wall of the sleeve 4. The locking pin passes through the locking hole and is suitable for locking with the slide.

[0065] Among them, the sleeve 4 is fixedly connected to the beam 1, and the beam 1 is connected to the slide through the sleeve 4. The sleeve 4 supports the beam 1 while raising the height of the beam 1. A locking hole is opened on the side wall of the sleeve 4. The axial direction of the locking hole can be perpendicular to the direction of gravity. A locking pin can be inserted into the locking hole, and the locking pin can be locked with the slide in the direction of gravity.

[0066] Specifically, a locking pin is inserted into the locking hole, limiting the vertical movement between the sleeve 4 and the sled, preventing the spray jig 10 from rocking relative to the sled and ensuring spray quality. Furthermore, the pin structure simplifies the installation connection between the sleeve 4 and the sled, improving installation efficiency while facilitating replacement and maintenance, reducing maintenance costs.

[0067] In the above embodiment, the spray jig 10 is fixedly connected to the slide through the sleeve 4, the locking pin, and the slide, which effectively prevents the spray jig 10 from being displaced due to vibration or other factors, enhances the stability between the spray jig 10 and the slide, reduces the probability of poor spraying during spraying production, and improves the yield rate of the decorative panel 20.

[0068] As an optional embodiment, the number of sleeves 4 and locking pins can be multiple, and multiple sleeves 4 correspond to multiple locking pins one by one. Multiple sleeves 4 are arranged at intervals along the extension direction of the beam 1, so that the beam 1 is evenly stressed when connected to the slide, preventing the spray jig 10 from being deformed due to long-term use, thereby extending the service life of the spray jig 10.

[0069] In some embodiments of the present invention, the first support rod 2, the second support rod 3, the sleeve 4 and the crossbeam 1 are all made of 45-grade steel.

[0070] Among them, No. 45 steel is a high-quality carbon structural steel with the advantages of high strength, high temperature resistance, corrosion resistance, easy processing, and low cost. No. 45 steel is used to make the first support rod 2, the second support rod 3, the sleeve 4 and the beam 1, so that the spray jig 10 can withstand a larger load. At the same time, the overall performance of the spray jig is more stable and can withstand high-temperature baking operations during production operations, thereby extending the service life of the spray jig 10 and saving production and processing costs.

[0071] In some embodiments of the present invention, the first support rod 2 , the second support rod 3 and the sleeve 4 are all welded to the crossbeam 1 .

[0072] Among them, the first support rod 2, the second support rod 3 and the sleeve 4 can be firmly connected to the beam 1 by welding to form an overall force system, which effectively reduces the external interference on the connection of the spray jig 10, makes the spray jig 10 more integrated and stable, and prolongs the service life of the spray jig 10.

[0073] It should be noted that the welding method used in the present invention requires full welding to make the welding more firm. After welding is completed, the welding points need to be polished to prevent the welding points from scratching the decorative parts.

[0074] In some embodiments of the present invention, during production, the spray jig 10 is fixed to the slide rail through the sleeve 4, the second support rod 3 provides an upward support force to the decorative panel 20, and the first support rod 2 is clamped with the assembly bracket 201 to achieve the limitation of the decorative panel 20 in the left and right directions. The spray jig 10 supports and positions the decorative panel 20 through the joint action of the first support rod 2 and the second support rod 3, thereby improving the stability of the decorative panel 20 during the production process.

[0075] According to the spraying jig provided in the embodiment of the present invention, the decorative panels are supported and limited during the production process, thereby improving the stability of the decorative panels during the production process and reducing the probability of parts falling off or poor spraying due to the instability of the spraying jig, thereby further improving the yield rate of the decorative panels and saving production costs. In addition, the spraying jig provided in the embodiment of the present invention is easy to install and disassemble, thereby improving the operating efficiency of the upper and lower jigs of the decorative panels and thus improving production efficiency.

[0076] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0077] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A spraying jig for fixing a decorative panel (20) to be sprayed, characterized in that: At least one assembly bracket (201) is provided on the side of the decorative plate (20) facing away from the spraying surface, and the spraying jig comprises: A crossbeam (1), wherein the crossbeam (1) is suitable for being connected to a skid of a spray conveyor line body; a first support rod (2), one end of the first support rod (2) being connected to the crossbeam (1), and the other end of the first support rod (2) being adapted to be clamped and fixed to the assembly bracket (201); A second support rod (3), one end of the second support rod (3) is connected to the crossbeam (1), and the other end of the second support rod (3) is suitable for supporting the assembly bracket (201) in the opposite direction of gravity.

2. The spraying jig according to claim 1, characterized in that: The first support rod (2) comprises: a first connecting rod (21) and a limiting column (22), the first connecting rod (21) having a connecting end and a fixed end, the limiting column (22) having a head (221) and a neck (222), the head (221) being connected to the connecting end via the neck (222), the fixed end being connected to the crossbeam (1), the neck (222) being adapted to be inserted into an assembly hole (2011) on the assembly bracket (201), and the end faces of the head (221) and the connecting end being adapted to clamp the assembly bracket (201) on both sides of the assembly bracket (201).

3. The spraying jig according to claim 2, characterized in that: The limiting column (22) is detachably connected to the first connecting rod (21).

4. The spraying jig according to claim 1, characterized in that: There are multiple second support rods (3), the crossbeam (1) extends along a first direction perpendicular to the gravity direction, and in the first direction, at least one second support rod (3) is provided on both sides of the first support rod (2).

5. The spraying jig according to claim 4, characterized in that: Each of the second support rods (3) is suitable for supporting a different assembly bracket (201).

6. The spraying jig according to claim 5, characterized in that: The second support rod (3) includes: a second connecting rod (31) and a support column (32), wherein the support column (32) is connected to the crossbeam (1) via the second connecting rod (31), the axial direction of the support column (32) is parallel to the first direction, and the support column (32) is suitable for supporting the assembly bracket (201) matched therewith.

7. The spraying jig according to claim 6, characterized in that: The assembly bracket (201) is formed with an arc-shaped groove, the support column (32) is a cylindrical pillar, and the side surface of the support column (32) is suitable for fitting with the arc-shaped groove surface.

8. The spraying jig according to any one of claims 1 to 7, characterized in that: The spraying fixture also includes: A sleeve (4), wherein the crossbeam (1) is adapted to be connected to the skid via the sleeve (4), and a locking hole is provided on a side wall of the sleeve (4); A locking pin passes through the locking hole and is suitable for locking with the skid.

9. The spraying jig according to claim 8, characterized in that: The first support rod (2), the second support rod (3), the sleeve (4) and the crossbeam (1) are all made of 45 steel.

10. The spraying jig according to claim 9, characterized in that: The first support rod (2), the second support rod (3) and the sleeve (4) are all welded to the crossbeam (1).

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