A masking fixture for spray painting battery pack frames

Abstract

This invention proposes a masking fixture for spraying paint on a battery pack frame. The battery pack frame includes a base plate, with a frame on each side of the back of the base plate and a connecting bracket on the outer side of the frame. The masking fixture includes a masking frame, which is fitted onto the outside of the base plate, with only the front of the masking frame exposed. The masking frame and the battery pack frame are detachably connected. This invention, by designing a masking frame that matches the base plate of the battery pack frame, masks the non-painted areas of the battery pack frame, ensuring that only the front of the masking frame exposes the front of the base plate to be painted. This facilitates operation, eliminates the need for using high-temperature resistant tape to partially mask non-painted areas, and greatly improves work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of spraying tooling technology, and in particular to a masking tooling for spraying battery pack frames. Background Technology

[0002] With the rapid development of the new energy vehicle industry, higher requirements have been placed on the protection performance of the power battery pack, as a core component. The battery pack frame is used to house the battery and mount it to the vehicle body components. The battery pack frame consists of two parts: the frame body and the connecting brackets. The frame body is used to mount the battery, and the connecting brackets are fixedly installed on the outer peripheral wall of the frame body to connect it to the vehicle body components. As a key structural component supporting the battery modules, the metal frame of the battery pack typically requires painting its outer surface for corrosion protection and aesthetic purposes.

[0003] Currently, the industry commonly uses masking and protection processes to prevent paint contamination in non-painted areas (including internal mounting surfaces, positioning holes, electrical interfaces, etc.). Existing technologies mainly employ the following masking methods: using high-temperature resistant tape to locally mask non-painted areas. This method suffers from low efficiency due to manual operation. Utility Model Content

[0004] This invention proposes a masking fixture for battery pack frame spraying, which solves the problem of low manual operation efficiency caused by the existing method of using high-temperature resistant tape to locally apply and mask non-spraying areas.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model provides a masking fixture for spraying paint on a battery pack frame. The battery pack frame includes a base plate, and each side of the back of the base plate is provided with a frame. A connecting bracket is provided on the outer side of the frame. The masking fixture includes a masking frame, which is fitted onto the outer side of the base plate. Only the front of the masking frame is exposed on the front of the base plate. The masking frame is detachably connected to the battery pack frame.

[0007] Specifically, the connecting bracket is provided with a first positioning hole, and the back of the shielding frame is provided with a plurality of brackets that match the connecting bracket. The brackets are provided with second positioning holes that match the first positioning hole, and the first positioning hole and the second positioning hole are connected by screws.

[0008] Preferably, the shielding fixture further includes a shielding cover, which is installed on the back of the shielding frame and is used to cooperate with the shielding frame to shield the frame and connecting bracket on the back of the base plate. The shielding cover is detachably connected to the battery pack frame.

[0009] Specifically, the shielding cover includes a side plate and a top plate arranged along the outer edge of the back of the battery pack frame. The side plate is used to shield the outer side of the frame and the connecting bracket, and the top plate is used to shield the back of the frame and the connecting bracket.

[0010] Furthermore, the back of the frame is provided with a plurality of third positioning holes, and the top plate is provided with a plurality of fourth positioning holes that match the third positioning holes. The third positioning holes and the fourth positioning holes are connected by screws.

[0011] Preferably, the back of the shielding frame is provided with a plurality of support bases, the height of which is greater than the height of the frame.

[0012] Specifically, the bottom outer surface of the support base is provided with a downwardly extending protrusion, and the shielding frame is provided with a clearance opening for the protrusion to pass through.

[0013] Specifically, the top of the shielding frame is provided with a hanging ring for engaging with a hook at the end of a suspended accumulation chain or a material handling robot arm.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] (1) This utility model designs a shielding frame that matches the base plate of the battery pack frame. The shielding frame is used to shield the non-spraying area of ​​the battery pack frame, so that only the front of the base plate to be sprayed is exposed on the front of the shielding frame. It is easy to operate and does not require the use of high temperature resistant tape to locally attach and shield the non-spraying area, which greatly improves work efficiency.

[0016] (2) By installing a shielding cover on the back of the shielding frame, the present invention further shields the non-painted areas such as the frame and connecting bracket on the back of the battery pack frame, thereby further improving the shielding effect of the battery pack frame.

[0017] (3) By setting several support seats on the back of the shielding frame, this utility model avoids damage to the paint surface when stacking multiple sprayed products, and facilitates subsequent transportation and maintenance of the products. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram illustrating the assembly process of the shielding fixture and the battery pack frame of this utility model.

[0020] Figure 2 This is a schematic diagram of the front structure of the shielding fixture and battery pack frame after assembly.

[0021] Figure 3 This is a schematic diagram of the assembly process of the battery pack frame and the shielding frame in an embodiment of this utility model;

[0022] Figure 4 This is a schematic diagram of the rear structure of the shielding fixture and battery pack frame after assembly.

[0023] Figure 5 This is a schematic diagram of the assembly process of the battery pack frame and the shielding cover in an embodiment of this utility model;

[0024] Figure 6 This is a schematic diagram of the stacked state of the product after multi-layer spraying in an embodiment of this utility model.

[0025] In the diagram: 1. Base plate; 2. Frame; 3. Connecting bracket; 4. Shielding frame; 5. First positioning hole; 6. Bracket; 7. Second positioning hole; 8. Side plate; 9. Top plate; 10. Third positioning hole; 11. Fourth positioning hole; 12. Support base; 13. Protrusion; 14. Clearance opening; 15. Hanging ring. Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Reference Figures 1 to 6 This utility model provides a masking fixture for spraying battery pack frames. The battery pack frame includes a base plate 1, and each side of the back of the base plate 1 is provided with a frame 2. A connecting bracket 3 is provided on the outer side of the frame 2. The masking fixture includes a masking frame 4, which is fitted on the outer side of the base plate 1. Only the front of the masking frame 4 is exposed. The masking frame 4 is detachably connected to the battery pack frame.

[0028] This utility model designs a shielding frame 4 that matches the base plate 1 of the battery pack frame. The shielding frame 4 is used to shield the non-painted areas of the battery pack frame, so that only the front of the base plate 1 that needs to be painted is exposed on the front of the shielding frame 4. The operation is convenient and there is no need to use high-temperature resistant tape to locally attach and mask the non-painted areas, which greatly improves work efficiency.

[0029] In the specific implementation process, a sealing ring can be set on the inner ring wall of the masking frame 4 (first open the sealing groove, and then embed the sealing ring into the sealing groove). By setting the sealing ring, the paint can be prevented from seeping into the frame 2 or even the back of the base plate 1 through the gap between the masking frame 4 and the outer wall of the base plate 1 during spraying, thereby further improving the masking effect.

[0030] Specifically, such as Figure 3 As shown, the connecting bracket 3 is provided with a first positioning hole 5, and the back of the shielding frame 4 is provided with a plurality of brackets 6 that match the connecting bracket 3 (the top surface of the bracket 6 abuts against the bottom surface of the connecting bracket 3). The bracket 6 is provided with a second positioning hole 7 that matches the first positioning hole 5. The first positioning hole 5 and the second positioning hole 7 are connected by screws. By providing brackets 6 on the back of the shielding frame 4, it is convenient to open positioning holes and connect them to the connecting bracket 3 by screws.

[0031] In practice, the battery pack frame and the shielding frame 4 can be connected by snap-fit ​​or magnetically detached. The specific detachable connection method can be flexibly selected according to the actual situation.

[0032] Preferably, such as Figure 4 , 5 As shown, the masking fixture also includes a masking cover, which is installed on the back of the masking frame 4. The masking cover works with the masking frame 4 to mask the frame 2 and connecting bracket 3 on the back of the base plate 1. The masking cover is detachably connected to the battery pack frame. By installing the masking cover on the back of the masking frame 4, the non-painted areas such as the frame 2 and connecting bracket 3 on the back of the battery pack frame are further masked, thus improving the masking effect on the battery pack frame.

[0033] Specifically, such as Figure 4 , 5 As shown, the shielding cover includes a side plate 8 and a top plate 9 arranged along the outer edge of the back of the battery pack frame. The side plate 8 is used to shield the outer side of the frame 2 and the connecting bracket 3, and the top plate 9 is used to shield the back of the frame 2 and the connecting bracket 3. The height of the side plate 8 is slightly higher than the height of the frame 2, and the inner side of the top plate 9 extends into the inner side of the frame 2, further shielding the back of the base plate 1 to a certain extent, so as to prevent paint mist from escaping to the area behind that does not need to be painted.

[0034] Furthermore, such as Figure 5 As shown, the back of the frame 2 is provided with a plurality of third positioning holes 10, and the top plate 9 is provided with a plurality of fourth positioning holes 11 that match the third positioning holes 10. The third positioning holes 10 and the fourth positioning holes 11 are connected by screws.

[0035] In practice, the battery pack frame and the shield can be connected by snap-fit ​​or magnetically detached. The specific detachable connection method can be flexibly selected according to the actual situation.

[0036] Preferably, such as Figure 2-4 As shown in Figure 6, the back of the masking frame 4 is provided with several support seats 12. The height of the support seats 12 is greater than the height of the side plate 8. By providing several support seats 12 on the back of the masking frame 4, the paint surface is not damaged when multiple sprayed products are stacked, which facilitates the subsequent transportation and maintenance of the products.

[0037] Specifically, such as Figure 2-4 As shown in Figure 6, the support base 12 has a downwardly extending protrusion 13 on the outer side of its bottom surface, and the shielding frame 4 has an clearance opening 14 for the protrusion 13 to pass through. By setting the protrusion 13 on the outer side of the bottom surface of the support base 12 and setting the clearance opening 14 on the shielding frame 4, multiple painted products can be stacked more neatly. The clearance opening 14 can restrict the horizontal displacement of the product, thereby effectively preventing the product from slipping and causing damage to the paint surface.

[0038] Specifically, such as Figure 2 , 4 As shown, the top of the shielding frame 4 is provided with a hanging ring 15, which is used to cooperate with the hook at the end of the suspended accumulation chain or the picking and placing robot arm to facilitate the automated loading, unloading and conveying of products.

[0039] The installation method of this utility model shielding fixture is as follows:

[0040] First, place the battery pack frame to be painted on the back of the masking frame 4, so that the bottom plate 1 of the battery pack frame is embedded inside the masking frame 4. Then, pass the screws through the first positioning hole 5 and the second positioning hole 7 in sequence to connect and fix the connecting bracket 3 on the outside of the battery pack frame to the masking frame 4. Next, put the masking cover on the back of the masking frame 4 so that the masking cover covers the frame 2 and the connecting bracket 3 on the back of the battery pack frame. Finally, pass the screws through the fourth positioning hole 11 and the third positioning hole 10 in sequence to connect and fix the masking cover to the frame 2 on the back of the battery pack frame.

[0041] After the product is sprayed, place the painted surface of the product upwards and stack multiple sprayed products on the transfer trolley in sequence. When stacking, pass the protrusion 13 of the bottom support seat 12 of the upper shielding frame 4 through the clearance opening 14 of the lower shielding frame 4, so that the protrusion 13 of the upper support seat 12 presses on the top surface of the lower support seat 12, thus achieving a stable stacking of multiple products.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A masking fixture for spraying paint on a battery pack frame, the battery pack frame comprising a base plate (1), wherein each side of the back of the base plate (1) is provided with a frame (2), and a connecting bracket (3) is provided on the outer side of the frame (2); characterized in that, The shielding fixture includes a shielding frame (4), which is fitted on the outside of the base plate (1). Only the front of the shielding frame (4) is exposed on the front of the base plate (1). The shielding frame (4) is detachably connected to the battery pack frame.

2. The masking fixture for battery pack frame spraying as described in claim 1, characterized in that, The connecting bracket (3) is provided with a first positioning hole (5), and the back of the shielding frame (4) is provided with a plurality of brackets (6) that match the connecting bracket (3). The brackets (6) are provided with a second positioning hole (7) that matches the first positioning hole (5). The first positioning hole (5) and the second positioning hole (7) are connected by screws.

3. The masking fixture for battery pack frame spraying as described in claim 1, characterized in that, The shielding fixture also includes a shielding cover, which is installed on the back of the shielding frame (4) and is used to cooperate with the shielding frame (4) to shield the frame (2) and connecting bracket (3) on the back of the base plate (1). The shielding cover is detachably connected to the battery pack frame.

4. The masking fixture for battery pack frame spraying as described in claim 3, characterized in that, The shielding cover includes a side plate (8) and a top plate (9) arranged along the outer edge of the back of the battery pack frame. The side plate (8) is used to shield the outer side of the frame (2) and the connecting bracket (3), and the top plate (9) is used to shield the back of the frame (2) and the connecting bracket (3).

5. A masking fixture for spraying paint on a battery pack frame as described in claim 4, characterized in that, The back of the frame (2) is provided with a plurality of third positioning holes (10), and the top plate (9) is provided with a plurality of fourth positioning holes (11) that match the third positioning holes (10). The third positioning holes (10) and the fourth positioning holes (11) are connected by screws.

6. A masking fixture for spraying paint on a battery pack frame as described in claim 1, characterized in that, The back of the shielding frame (4) is provided with several support seats (12), and the height of the support seats (12) is greater than the height of the frame (2).

7. A masking fixture for spraying paint on a battery pack frame as described in claim 6, characterized in that, The support base (12) has a downwardly extending protrusion (13) on its outer bottom surface, and the shielding frame (4) has a clearance opening (14) for the protrusion (13) to pass through.

8. A masking fixture for spraying paint on a battery pack frame as described in claim 1, characterized in that, The top of the shielding frame (4) is provided with a hanging ring (15) for engaging with the hook at the end of the suspended accumulation chain or the material handling robot arm.

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