Spraying hanger and spraying device

Abstract

The utility model provides a spraying hanger and spraying device, including support rod, pothook and hanging needle, the support rod is provided with the pothook, the pothook is provided with the connecting hole, the hanging needle is detachably fixed in the connecting hole, the side of the pothook close to the hanging needle is provided with the circular truncated cone-shaped connecting part, and the connecting part is provided with the circular truncated cone-shaped connecting part. And the cross section area of one side, close to the hanging needle, of the circular-truncated-cone-shaped connecting part is smaller than that of one side, close to the supporting rod, of the circular-truncated-cone-shaped connecting part. Through connection between the hanging needle and the hook, a workpiece is hung at the connecting position of the hanging needle and the hook, meanwhile, the contact area between the workpiece and the hook is reduced through the circular-truncated-cone-shaped connecting part at the hook, the contact area between the workpiece and the spraying hanging tool is reduced while it is ensured that the workpiece is stably hung, the powder spraying area is increased, and the spraying efficiency is improved. And the spraying uniformity is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of spraying hangers, and in particular to a spraying hanger and spraying device. Background Technology

[0002] During the sheet metal painting process, a painting hanger is needed to suspend the sheet metal parts before painting. If the sheet metal parts are not suspended stably or shake during the painting process, it will cause painting deviations, resulting in uneven coating on the surface of the sheet metal parts and affecting their performance.

[0003] In existing technologies, to improve the stability of sheet metal parts, the contact area between the sheet metal part and the spraying fixture is usually increased to ensure the stability of the sheet metal part. However, during double-sided spraying, a large contact area between the fixture and the sheet metal part can lead to some areas of the sheet metal part not being sprayed. This usually requires additional spraying after the initial spraying, which affects the uniformity of the coating on the sheet metal part surface and thus affects the surface performance stability of the sheet metal part.

[0004] Therefore, it is necessary to find a spraying fixture that can stabilize sheet metal parts and reduce the contact area with sheet metal parts. Utility Model Content

[0005] To overcome the problems existing in related technologies, one of the objectives of this utility model is to provide a spraying hanger that allows the workpiece to be suspended at the connection point between the hanger and the hook through the connection between the hanger and the hook. At the same time, the frustum-shaped connecting part at the hook reduces the contact area between the workpiece and the hook. While ensuring the stable suspension of the workpiece, the contact area between the workpiece and the spraying hanger is reduced, the powder spraying area is increased, and the spraying uniformity is improved.

[0006] A spraying hanger includes a support rod, a hook, and a hanging pin. The support rod is provided with a hook, and the hook is provided with a connecting hole. The hanging pin is detachably fixed in the connecting hole. The hook is provided with a connecting part on the side near the hanging pin. The cross-sectional area of ​​the connecting part near the hanging pin is smaller than the cross-sectional area of ​​the connecting part near the support rod.

[0007] In this application, the hanging pin is used to insert into the positioning hole in the workpiece to fix the workpiece, and at the same time, it carries the workpiece into the connecting hole, so that the workpiece is fixed at the connection position of the hook and the hanging pin; on this basis, the workpiece abuts against the connecting part at the end of the hook. Since the cross-sectional area of ​​the connecting part near the workpiece is small, the contact area between the workpiece and the hook is minimized. In this way, during the spraying process, the spraying area of ​​the workpiece can be increased, the spraying efficiency can be improved, the uniformity of double-sided spraying can be improved, and the stability of the surface performance of the workpiece can be improved.

[0008] In a preferred embodiment of this invention, the support rod includes a horizontal bar and a vertical bar. The vertical bar is provided with M horizontal bars, and the horizontal bars are provided with 2N hooks. The 2N hooks are symmetrical about the axis of the vertical bar, and the horizontal bars and the vertical bar are arranged perpendicularly. M and N are both integers greater than 0.

[0009] This application utilizes a combination of horizontal and vertical bars to achieve high space utilization. When suspending workpieces, they can be vertically suspended in the hanger in multiple rows and columns. The hooks symmetrically arranged in the horizontal bars can be used to suspend both ends of the same workpiece, or to symmetrically suspend multiple workpieces to maintain balance on both sides of the vertical bars. When symmetrically arranged hooks are used to suspend both ends of the same workpiece, multiple hooks can be installed on the same side of the horizontal bar, accommodating workpieces of different sizes and lengths. When changing the workpiece to be painted, simply suspend the hanging pins on the hooks at different positions. This allows for compatible suspension of workpieces of various sizes, expanding the applicability of the painting hanger.

[0010] In a preferred embodiment of this invention, a triangular support frame is provided at the bottom of the vertical rod.

[0011] The vertical pole serves as a support structure for the horizontal poles, supporting the entire spraying hanger. A triangular support frame is installed at its base; the triangle provides stability, ensuring the vertical pole stands firmly. Additionally, a handle can be installed at the top of the vertical pole for easy handling and relocation, improving its mobility and stability.

[0012] In a preferred embodiment of this invention, the distance between adjacent crossbars is equal.

[0013] The equal distance between the horizontal bars allows for layered suspension of workpieces of the same type. This application allows for either a fixed or movable position of the horizontal bars within the vertical bars, enabling adjustment of the distance between them to accommodate workpieces of different sizes and improve the applicability of the spraying hanger.

[0014] In a preferred embodiment of this utility model, the hook includes a connector and a hanger. One end of the connector is detachably connected to the crossbar, and the other end of the connector is fixedly connected to the hanger. The hanger is an arc-shaped structure with corners.

[0015] Because the crossbar has multiple connecting holes, when the workpiece size changes, only the hooks need to be installed in the symmetrical connecting holes that match the workpiece size. Therefore, the hooks are designed as detachable structures, which can prevent unused hooks from interfering with the workpiece. In this application, the connector can support the hanger and maintain a certain distance from the crossbar and vertical bar. By adjusting the size of the connector, the distance between the hook and the support bar can be adjusted, avoiding interference between the workpiece and the crossbar or vertical bar during the spraying process, which would affect the spraying stability. In this application, the hanger is an arc-shaped structure with corners facing upwards, which forms a fixation for the hanging pin and the workpiece. The connector and the hanger are fixedly connected, and the connector and the crossbar are detachably connected, forming a detachable structure between the hook and the crossbar.

[0016] In a preferred embodiment of this utility model, the crossbar is provided with a mounting hole, the mounting hole is provided with a first internal thread, and the end of the connector away from the hanger is provided with a first external thread that matches the first internal thread.

[0017] The mounting holes and connectors are detachably connected by threads. This allows for a detachable connection between the crossbar and the hook, and the structure is simple and easy to install, improving the efficiency of installing and removing the spraying hanger. The threaded connection between the connectors and the mounting holes also allows the connectors to be installed in different mounting holes to suspend workpieces of different sizes.

[0018] In a preferred embodiment of this invention, a drain hole is provided at the bottom of the connecting hole, and the drain hole extends from the bottom of the connecting hole to the outside of the hook.

[0019] Before and after spraying, the sheet metal parts are washed with water using the spraying fixture. During the washing process, water can enter the connecting hole along the hanger pin. If this water cannot be drained in time, it can cause problems such as rusting of the hanger pin and connector, or unstable fixing, thus affecting the service life of the hanger pin and connector. In this application, the connecting hole is located at the end of the hanger furthest from the connector, and is a groove-shaped structure at the end of the hanger. The bottom of the connecting hole refers to the bottom position of the groove where the connecting hole is located, where a drain hole is provided. The drain hole is connected to the connecting hole and is used to drain the water accumulated in the connecting hole from the connecting hole to the outside of the hanger, preventing water from accumulating in the connecting hole and causing rusting of the connecting hole and hanger pin, thus affecting their service life.

[0020] In a preferred embodiment of this invention, a second internal thread is provided in the connecting hole, and a second external thread adapted to the second internal thread is provided at the end of the hanging pin.

[0021] The connection between the connecting hole and the hanging pin in this application is detachably connected by threads. This not only enables the connection between the connecting hole and the hanging pin, but also simplifies the structure, facilitates installation, and improves the efficiency of installation and disassembly of the spraying fixture. Furthermore, the threaded connection between the connecting hole and the hanging pin also facilitates the installation of the hanging pin in different connecting holes, further enhancing the ease of installation of the spraying fixture.

[0022] In a preferred embodiment of this invention, the diameter of the hanging pin is 2-3 cm, and the depth of the connecting hole is 22-23 cm.

[0023] The connecting hole in this application needs to have a certain depth to ensure that the hanging pin can be stably inserted into the connecting hole. The diameter of the hanging pin needs to be compatible with the inner diameter of the positioning hole in the workpiece, so it should not be set too large, which would affect other areas of the workpiece. This application sets the hanging pin diameter to 2-3cm and the hanging pin depth to 22-23cm, which can ensure the stability of the hanging pin carrying the workpiece during suspension.

[0024] The second objective of this application is to provide a spraying apparatus, including a spraying hanger as described above.

[0025] The spraying device of this application can reduce the contact area between the workpiece and the spraying fixture, and improve the uniformity of double-sided spraying of the workpiece.

[0026] The beneficial effects of this utility model are as follows:

[0027] This utility model provides a spraying fixture, including a support rod, a hook, and a hanging pin. The support rod has a hook with a connecting hole. The hanging pin is detachably fixed within the connecting hole. A connecting portion is provided on the side of the hook near the hanging pin, and the cross-sectional area of ​​the connecting portion near the hanging pin is smaller than the cross-sectional area of ​​the connecting portion near the support rod. In this application, the hanging pin is used to insert into a positioning hole in the workpiece to fix the workpiece, and simultaneously carries the workpiece into the connecting hole, thus fixing the workpiece at the connection position between the hook and the hanging pin. Furthermore, the workpiece abuts against the connecting portion at the end of the hook. Because the cross-sectional area of ​​the connecting portion near the workpiece is smaller, the contact area between the workpiece and the hook is minimized. This increases the spraying area of ​​the workpiece during spraying, improves spraying efficiency, enhances the uniformity of double-sided spraying, and ultimately improves the stability of the workpiece's surface properties.

[0028] This application also provides a spraying apparatus, including the spraying fixture as described above; the spraying apparatus of this application can reduce the contact area between the workpiece and the spraying fixture, and improve the uniformity of double-sided spraying of the workpiece. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the support rod in this application;

[0030] Figure 2 This is a side view of the spraying fixture of this application;

[0031] Figure 3 This is a schematic diagram of the structure of the hook in this application;

[0032] Figure 4 This is a schematic diagram showing the dimensions of the support rod in Example 3;

[0033] Figure 5 This is a schematic diagram of the side structure of the spraying fixture in Example 3;

[0034] Figure 6 This is a schematic diagram of the dimensions of the hanging part in Example 3.

[0035] Figure label:

[0036] 11. Vertical bar; 12. Horizontal bar; 121. Mounting hole; 13. Handle; 141. Connector; 142. Hanger; 143. Frustum-shaped connecting part; 145. Connecting hole; 146. Drain hole; 15. Hanging pin. Detailed Implementation

[0037] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0038] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0039] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] Example 1

[0041] like Figures 1-3 As shown, a spraying hanger includes a support rod, a hook, and a hanging pin 15. The support rod is provided with a hook, and the hook is provided with a connecting hole 145. The hanging pin 15 is detachably fixed in the connecting hole 145. The hook is provided with a connecting part on the side near the hanging pin 15. The cross-sectional area of ​​the connecting part on the side near the hanging pin 15 is smaller than the cross-sectional area of ​​the connecting part on the side near the support rod.

[0042] In this application, the hanging pin is used to insert into the positioning hole in the workpiece to fix the workpiece, and at the same time, it carries the workpiece into the connecting hole 145, so that the workpiece is fixed at the connection position of the hook and the hanging pin 15. On this basis, the workpiece abuts against the connecting part at the end of the hook. Since the cross-sectional area of ​​the connecting part near the workpiece is small, the contact area between the workpiece and the hook is minimized. In this way, during the spraying process, the spraying area of ​​the workpiece can be increased, the spraying efficiency can be improved, the uniformity of double-sided spraying can be improved, and the stability of the surface performance of the workpiece can be improved.

[0043] In this application, the workpiece refers to a sheet metal part. The sheet metal part is relatively thin, and positioning holes are provided at the edges of the sheet metal part. The inner diameter of the positioning holes is slightly larger than the outer diameter of the hanging pin 15. The hanging pin 15 can pass through the positioning holes to suspend the sheet metal part in the hook. The sheet metal part needs to be sprayed on both sides. During spraying, it is necessary to ensure that the sheet metal part is stable in order to form a uniform spray.

[0044] This application addresses the same sheet metal part, allowing for the installation of one or more hooks for suspension based on the shape of the sheet metal part. For longer sheet metal parts, positioning holes can be installed at both ends, and corresponding hooks can be installed to suspend and stabilize the parts at both ends, thus ensuring the stability of the sheet metal part during the painting process.

[0045] In this application, the connecting part has a smaller cross-sectional area at one end that abuts against the sheet metal part. The connecting part is provided because the hook has a bent structure similar to a cylinder, with the bending direction facing upwards, for suspension. Since the outer diameter of the hook is relatively large, if the sheet metal part is directly suspended in the hook, a large positioning hole would be required, which would waste the effective area of ​​the sheet metal part. However, the hanging pin 15, which is adapted to the connecting hole 145 at the end of the hook, only needs to be inserted into the end of the hook. That is, the hanging pin 15 has a smaller outer diameter, which can reduce the inner diameter of the positioning hole in the sheet metal part and avoid wasting space in the sheet metal part.

[0046] This application defines the side of the connecting portion closest to the hook 15 as the first end of the connecting portion, and the side of the connecting portion furthest from the hook 15 as the second end of the connecting portion. The outer diameter of the second end of the connecting portion is equal to the outer diameter of the hook, and the outer diameter of the first end of the connecting portion can be slightly larger than the inner diameter of the connecting hole 145, or approximately equal to the inner diameter of the connecting hole 145. In this way, when the positioning hole in the sheet metal part is suspended in the hook 15, the hook 15 is fixed in the connecting hole 145, so that the back of the sheet metal part abuts against the first end of the connecting portion, ensuring that the contact area between the sheet metal part and the hook is minimized.

[0047] In this application, the connecting hole 145 and the hanging pin 15 can be connected by threads or by other means to make the hanging pin 15 and the hook detachable, so as to facilitate the disassembly, repair or replacement of the hanging pin 15.

[0048] Example 2

[0049] like Figures 1-3 As shown, a spraying hanger includes a support rod, a hook, and a hanging pin 15. The support rod is provided with a hook, and the hook is provided with a connecting hole 145. The hanging pin 15 is detachably fixed in the connecting hole 145. A frustum-shaped connecting part 143 is provided on the side of the hook near the hanging pin 15. The cross-sectional area of ​​the frustum-shaped connecting part 143 on the side near the hanging pin 15 is smaller than the cross-sectional area of ​​the frustum-shaped connecting part 143 on the side near the support rod.

[0050] Furthermore, the support rod includes a horizontal bar 12 and a vertical bar 11. M horizontal bars 12 are provided on the vertical bar 11, and 2N hooks are provided on the horizontal bars 12. The 2N hooks are symmetrical about the axis of the vertical bar 11. The horizontal bars 12 and the vertical bar 11 are arranged perpendicularly. M and N are both integers greater than 0.

[0051] This application employs a horizontal bar 12 and a vertical bar 11 in combination to achieve high space utilization. When suspending workpieces, they can be vertically suspended in the hanger in a multi-row, multi-column arrangement. The hooks symmetrically arranged in the horizontal bar 12 can be used to suspend both ends of the same workpiece, or to symmetrically suspend multiple workpieces to maintain balance on both sides of the vertical bar 11. When the symmetrically arranged hooks are used to suspend both ends of the same workpiece, multiple hooks can be arranged on the same side of the horizontal bar 12, thus accommodating workpieces of different sizes and lengths. When it is necessary to change the workpiece to be sprayed, simply suspend the hanging pin 15 on the hooks at different positions. This achieves compatible suspension of workpieces of various sizes, expanding the applicability of the spraying hanger.

[0052] Furthermore, a triangular support frame is provided at the bottom of the vertical rod 11.

[0053] The vertical rod 11 serves as a support structure for the horizontal rod 12, supporting the entire spraying fixture. A triangular support frame is installed at its bottom; the triangle provides stability, ensuring the vertical rod 11 stands stably. Additionally, a handle 13 can be installed at the top of the vertical rod 11 to facilitate movement and relocation, improving its ease of movement and stability.

[0054] Furthermore, the distance between adjacent crossbars 12 is equal.

[0055] The equal distance between the horizontal bars 12 allows for layered suspension of workpieces of the same type. This application can either fix the position of the horizontal bars 12 within the vertical bars 11 or allow the position of the horizontal bars 12 within the vertical bars 11 to be movable, thereby adjusting the distance between the horizontal bars 12 to accommodate workpieces of different sizes and improve the applicability of the spraying hanger.

[0056] Furthermore, the hook includes a connector 141 and a hanger 142. One end of the connector 141 is detachably connected to the crossbar 12, and the other end of the connector 141 is fixedly connected to the hanger 142. The hanger 142 is an arc-shaped structure with corners.

[0057] Since the crossbar 12 has multiple connecting holes 145, when the workpiece size changes, only hooks need to be installed in the symmetrical connecting holes 145 that are adapted to the workpiece size. Therefore, the hooks are designed as detachable structures, which can prevent unused hooks from interfering with the workpiece. In this application, the connector 141 can support the hanger 142 and maintain a certain distance from the crossbar 12 and the vertical bar 11. By adjusting the size of the connector 141, the distance of the hook from the support bar can be adjusted to avoid interference between the workpiece and the crossbar 12 or the vertical bar 11 during the spraying process, which would affect the spraying stability.

[0058] In this application, the hanger 142 is an arc-shaped structure with corners facing upwards to fix the hanging pin 15 and the workpiece. The connector 141 and the hanger 142 are fixedly connected, and the connector 141 and the crossbar 12 are detachably connected to form a detachable structure between the hook assembly and the crossbar 12.

[0059] Furthermore, the crossbar 12 is provided with a mounting hole 121, the mounting hole 121 is provided with a first internal thread, and the end of the connector 141 away from the hanger 142 is provided with a first external thread that matches the first internal thread.

[0060] The mounting hole 121 and the connector 141 are detachably connected by threads. This not only enables the detachable connection between the crossbar 12 and the hook, but also simplifies the structure, facilitates installation, and improves the efficiency of installing and removing the spraying hanger. Furthermore, the threaded connection between the connector 141 and the mounting hole 121 allows the connector 141 to be installed in different mounting holes 121 to suspend workpieces of different sizes.

[0061] Furthermore, a drain hole 146 is provided at the bottom of the connection hole 145, and the drain hole 146 extends from the bottom of the connection hole 145 to the outside of the hook.

[0062] Before and after spraying, the sheet metal parts are washed with water using the spraying fixture. During the washing process, water enters the connecting hole 145 along the hanging pin 15. If it cannot be drained in time, it will cause problems such as rusting of the hanging pin 15 and the connector 141, or unstable fixing, thus affecting the service life of the hanging pin 15 and the connector 141. In this application, the connecting hole 145 is located at the end of the hanger 142 away from the connector 141, and is a groove-shaped structure located at the end of the hanger 142. The bottom of the connecting hole 145 refers to the bottom position of the groove where the connecting hole 145 is located. A drain hole 146 is provided therein. The drain hole 146 communicates with the connecting hole 145 and is used to drain the water accumulated in the connecting hole 145 from the connecting hole 145 to the outside of the hanger 142, so as to prevent water from accumulating in the connecting hole 145, causing the connecting hole 145 and the hanging pin 15 to rust and affecting their service life.

[0063] Furthermore, a second internal thread is provided in the connecting hole 145, and a second external thread is provided at the end of the hanging pin 15 that is compatible with the second internal thread.

[0064] The connection between the connecting hole 145 and the hanging pin 15 in this application is detachably connected by threads. This not only enables the detachable connection between the connecting hole 145 and the hanging pin 15, but also simplifies the structure, facilitates installation, and improves the efficiency of installation and disassembly of the spraying fixture. Furthermore, the threaded connection between the connecting hole 145 and the hanging pin 15 also facilitates the installation of the hanging pin 15 in different connecting holes 145, further enhancing the ease of installation of the spraying fixture.

[0065] Furthermore, the diameter of the hanging pin 15 is 2-3 cm, and the depth of the connecting hole 145 is 22-23 cm.

[0066] The connecting hole 145 in this application needs to have a certain depth to ensure that the hanging pin 15 can be stably inserted into the connecting hole 145. The diameter of the hanging pin 15 needs to be compatible with the inner diameter of the positioning hole in the workpiece, so it should not be set too large, which would affect other areas of the workpiece. In this application, the diameter of the hanging pin 15 is set to 2-3cm, and the insertion depth of the hanging pin 15 is 22-23cm, which can ensure the stability of the hanging pin 15 when suspending the workpiece.

[0067] Example 3

[0068] like Figures 4-6 As shown, a spraying hanger includes a support rod, a hook, and a hanging pin 15. The support rod is provided with a hook, and the hook is provided with a connecting hole 145. The hanging pin 15 is detachably fixed in the connecting hole 145. A frustum-shaped connecting part 143 is provided on the side of the hook near the hanging pin 15. The cross-sectional area of ​​the frustum-shaped connecting part 143 on the side near the hanging pin 15 is smaller than the cross-sectional area of ​​the frustum-shaped connecting part 143 on the side near the support rod.

[0069] The spray painting fixture in this application is used for hanging and spraying the front panel assembly of an air conditioner. The front panel assembly has several models, including: Model 1 with a length and width of 46cm and 24.5cm; Model 2 with a length and width of 53.4cm and 24.0cm; Model 3 with a length and width of 53.4cm and 24.0cm; Model 4 with a length and width of 46cm and 24cm; Model 5 with a length and width of 53.4cm and 24cm; Model 6 with a length and width of 69.4cm and 25.5cm; and Model 7 with a length and width of 69.4cm and 25.5cm.

[0070] like Figure 4 As shown, in this embodiment, the support rod includes a horizontal bar 12 and a vertical bar 11. Four horizontal bars 12 are provided on the vertical bar 11. Six hooks are symmetrically arranged on each horizontal bar 12 with the vertical bar 11 as the center of symmetry. The horizontal bars 12 and the vertical bar 11 are perpendicular to each other. The six symmetrically arranged hooks form three symmetrical groups, with distances between the two hooks in each symmetrical group being 22cm, 32cm, and 44cm, respectively.

[0071] When suspending the front side panel assemblies, the front side panel assemblies of models 1, 2, 3, 4, and 5 are suspended in symmetrical groups with a spacing of 32cm. The front side panel assemblies of models 6 and 7 are suspended in symmetrical groups with a spacing of 44cm.

[0072] The distance between adjacent crossbars 12 is equal. In this embodiment, the distance between adjacent crossbars 12 is set to 39cm, which can accommodate the placement of all models of front side panel assemblies. In this way, four front side panel assemblies can be suspended simultaneously in the same spraying fixture, and both ends of each front side panel assembly are fixed by the hanging pins 15 in the same crossbar 12.

[0073] In this embodiment, the hook includes a connector 141 and a hanger 142. One end of the connector 141 is detachably connected to the crossbar 12, and the other end of the connector 141 is fixedly connected to the hanger 142. The hanger 142 is an arc-shaped structure including a corner. The crossbar 12 is provided with a mounting hole 121, and a first internal thread is provided in the mounting hole 121. The end of the connector 141 away from the hanger 142 is provided with a first external thread that matches the first internal thread.

[0074] Since the crossbar 12 has multiple connecting holes 145, when the workpiece size changes, only hooks need to be installed in the symmetrical connecting holes 145 that are adapted to the workpiece size. Therefore, the hooks are designed as detachable structures to avoid unused hooks interfering with the workpiece. In this application, the connector 141 can support the hanger 142, maintaining a certain distance between it and the crossbar 12 and the vertical bar 11. Figure 5 As shown, the length of the connector 141 in the horizontal direction is 100mm, which means that the hanger 142 can be supported to a position 100mm away from the support rod.

[0075] The connecting hole 145 is provided with a second internal thread, and the end of the hook 15 is provided with a second external thread that matches the second internal thread. In this embodiment, the bottom of the connecting hole 145 is provided with a drain hole 146, which extends from the bottom of the connecting hole 145 to the outside of the hook.

[0076] Before and after spraying, the sheet metal parts are washed with water using the spraying fixture. During the washing process, water enters the connecting hole 145 along the thread at the bottom of the hanging pin 15. If this water cannot be drained in time, it will cause problems such as rusting of the hanging pin 15 and the connector 141, or unstable fixing, thus affecting the service life of the hanging pin 15 and the connector 141. In this application, the connecting hole 145 is located at the end of the hanger 142 away from the connector 141, and is a groove-shaped structure located at the end of the hanger 142. The bottom of the connecting hole 145 refers to the bottom position of the groove where the connecting hole 145 is located. A drain hole 146 is provided therein. The drain hole 146 communicates with the connecting hole 145 and is used to drain the water accumulated in the connecting hole 145 from the connecting hole 145 to the outside of the hanger 142, so as to prevent water from accumulating in the connecting hole 145, causing the connecting hole 145 and the hanging pin 15 to rust and affecting their service life.

[0077] like Figure 6 As shown, the diameter of the hanging pin 15 is 2.25 cm, and the depth of the connecting hole 145 is 22.75 cm. In this embodiment, the connecting hole 145 needs to have a certain depth to ensure that the hanging pin 15 can be stably inserted into the connecting hole 145. The diameter of the hanging pin 15 needs to be compatible with the inner diameter of the positioning hole in the workpiece, so it should not be set too large, as this would affect other areas of the workpiece.

[0078] In this embodiment, the shape of the spraying fixture is adapted to the shape of the front panel assembly. Based on the shape of the front panel assembly, it is designed with two horizontal hanging pins 15, so that the front panel assembly is suspended in parallel. When the line is running, it ensures the stability of the front panel assembly and reduces the problem of material loss from the front panel assembly.

[0079] In this embodiment, the front panel assembly is double-sided sprayed according to the quality control and process operation requirements. To ensure the quality and process requirements of the front panel assembly, a tapered design is made for the area where the hanging pin 15 and the hook are connected. Specifically, it can be designed as a frustum structure to increase the powder spraying area of ​​the front panel assembly and reduce the spraying defects caused by the electrostatic shielding of the hanging pin 15.

[0080] To meet the production needs of various front panel assembly models, this embodiment designs multiple mounting holes and detachable hooks on the crossbar 12 based on the collected spacing of the front panel assembly hanging holes. This ensures the installation and adjustment of the hanger and the quick and accurate mounting and unloading of the front panel assembly, reducing operation time and accelerating the production process.

[0081] Based on the spray line operation structure and spray gun layout, this embodiment designs and adjusts the suspension spacing between the front side panel components, reasonably arranges the suspension positions of the four front side panel components, reduces the spacing between hanging points, and makes the front side panel components evenly distributed, maximizing the reduction of powder settling loss and improving powder utilization.

[0082] In this embodiment, a triangular support frame is provided at the bottom of the vertical rod 11, which gives the hanger sufficient strength and rigidity to meet the load-bearing requirements of the front panel assembly and the hanger during the incineration process. At the same time, it avoids structural deformation and safety issues caused by the aging of the hanger later.

[0083] In this embodiment, a drainage hole 146 is provided at the bottom of the connection hole 145. The most direct and significant function of the drainage hole 146 is to promote the rapid drainage of moisture accumulated on the hanger. During incineration or use, moisture often remains on the hanger and the items it carries. If this moisture is not drained in time, it will not only affect the drying speed of the front panel assembly, but may also cause the hanging pins 15 or hooks to become moldy, corroded, or affect the quality of the items due to prolonged dampness. The design of the drainage hole 146 allows this moisture to flow out smoothly, effectively reducing the time moisture remains and keeping the hanger and front panel assembly dry. By draining accumulated water in a timely manner, the drainage hole 146 reduces problems such as corrosion and deformation caused by water accumulation, thereby extending the service life of the hanger and ensuring the safety of the front panel assembly it carries.

[0084] This embodiment enables the compatible production of various models of front side panel assemblies, improving issues such as the number of hanging points, large and scattered powder coating area, and mismatched sets. It can simultaneously produce four front side panel assemblies in a complete set, doubling the output per cycle of the painting line compared to before its implementation; reducing the area of ​​empty spraying; ensuring centered powder coating on parts in the painting area; and increasing the effective powder coating area by 45%. Powder can be saved by 241 kg per 10,000 sets, totaling 4270.25 yuan per 10,000 sets.

[0085] This application also provides a spraying apparatus, including the spraying fixture as described above; the spraying apparatus of this application can reduce the contact area between the workpiece and the spraying fixture, and improve the uniformity of double-sided spraying of the workpiece.

[0086] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings. In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0087] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0088] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0089] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A spray painting hanger, characterized in that, It includes a support rod, a hook and a hanging pin (15). The support rod is provided with a hook and the hook is provided with a connecting hole (145). The hanging pin (15) is detachably fixed in the connecting hole (145). The hook is provided with a connecting part on the side near the hanging pin (15). The cross-sectional area of ​​the connecting part on the side near the hanging pin (15) is smaller than the cross-sectional area of ​​the connecting part on the side near the support rod.

2. A spraying fixture according to claim 1, characterized in that, The support rod includes a horizontal bar (12) and a vertical bar (11). M horizontal bars (12) are provided on the vertical bar (11). The horizontal bars (12) and the vertical bar (11) are arranged perpendicularly. 2N hooks are provided on the horizontal bars (12), wherein the 2N hooks are symmetrical about the axis of the vertical bar (11). M and N are both integers greater than 0.

3. A spraying fixture according to claim 2, characterized in that, A triangular support frame is provided at the bottom of the vertical rod (11).

4. A spraying fixture according to claim 2, characterized in that, The distance between adjacent crossbars (12) is equal.

5. A spraying fixture according to claim 2, characterized in that, The hook includes a connector (141) and a hanger (142). One end of the connector (141) is detachably connected to the crossbar (12), and the other end of the connector (141) is fixedly connected to the hanger (142). The hanger (142) is an arc-shaped structure with corners.

6. A spraying fixture according to claim 5, characterized in that, The crossbar (12) is provided with a mounting hole (121), and the mounting hole (121) is provided with a first internal thread. The end of the connector (141) away from the hanger (142) is provided with a first external thread that matches the first internal thread.

7. A spraying fixture according to claim 1, characterized in that, A drain hole (146) is provided at the bottom of the connecting hole (145), and the drain hole (146) extends from the bottom of the connecting hole (145) to the outside of the hook.

8. A spraying fixture according to claim 7, characterized in that, The connecting hole (145) is provided with a second internal thread, and the end of the hanging pin (15) is provided with a second external thread that matches the second internal thread.

9. A spray painting fixture according to claim 7, characterized in that, The diameter of the hanging pin (15) is 2-3cm, and the depth of the connecting hole (145) is 22-23cm.

10. A spraying device, characterized in that, Includes a spraying hanger as described in any one of claims 1-9.

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