Inverter mounting frame welding tool

Abstract

The utility model relates to welding tool technical field especially relates to a kind of inverter mounting frame welding tool, including base and inverter mounting frame, inverter mounting frame is by first side plate, bow plate, second side plate, L type plate and U type plate welding, several connecting seats and several straight push type quick clamps are connected on base, straight push type quick clamps are clamped to each part of inverter mounting frame by the connecting connecting rod and top plate, side plate clamping assembly and bow plate clamping assembly are provided on base, side plate clamping assembly is used to clamp first side plate and second side plate, bow plate clamping assembly is used to clamp bow plate. By straight push type quick clamps drive connecting rod-top plate mechanism, first side plate, second side plate, bow plate and other components realize synchronous displacement and rigid locking in clamping process, under the linkage control of multiple quick clamps, operator single action can complete the cooperative positioning of multiple components, eliminate the process interval of traditional step clamping, improve welding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, and in particular to a welding fixture for an inverter mounting bracket. Background Technology

[0002] Inverter mounting frames, as key load-bearing structures in photovoltaic power generation systems and power electronic equipment, are typically assembled from multiple metal plates, including a base plate, side plates, and reinforcing ribs, through welding. Their structure must meet high load-bearing strength and precision assembly requirements, and the welding quality directly affects the inverter's overall seismic performance and long-term operational stability. In traditional manufacturing processes, operators must manually position and weld each component step-by-step, which not only demands a high level of worker skill but also makes it difficult to guarantee consistency between multiple batches of products.

[0003] First, batch welding operations require repeated adjustments to the workpiece position, resulting in a high frequency of manual intervention and making it difficult for production efficiency to match the theoretical capacity of automated welding equipment. Second, multiple positioning operations can easily lead to cumulative errors, causing quality problems such as stiffener misalignment and weld misalignment. Third, the existing tooling structure is not adaptable enough, and special fixtures need to be replaced when facing different specifications of mounting frames, which significantly increases the production line adjustment time and modification costs. Utility Model Content

[0004] To overcome the low efficiency of multi-stage clamping welding, a welding fixture for inverter mounting brackets is provided, which aims to solve the above-mentioned shortcomings.

[0005] A welding fixture for an inverter mounting bracket includes a base and an inverter mounting bracket. The inverter mounting bracket is welded from a first side plate, an arc-shaped plate, a second side plate, an L-shaped plate, and a U-shaped plate. The base is connected to several connecting seats and several direct-push quick clamps. The direct-push quick clamps clamp the various parts of the inverter mounting bracket through connecting rods and a top plate. Each component of the inverter mounting bracket has several round holes and grooves for clamping. The left and right sides of the arc-shaped plate are welded to the first side plate and the second side plate, respectively. The L-shaped plate and the U-shaped plate are welded to the middle of the arc-shaped plate. The base is provided with a side plate clamping assembly and an arc plate clamping assembly. The side plate clamping assembly is used to clamp the first side plate and the second side plate, and the arc plate clamping assembly is used to clamp the arc-shaped plate.

[0006] In a preferred embodiment of this utility model, the side plate clamping assembly includes a first connecting rod. Support seats are connected to the front, rear, left, and right sides of the top of the base. A first top plate is connected to the base. A second push-type quick clamp is installed on the rear support seat. One end of the first connecting rod is connected to the second push-type quick clamp, and the other end passes through a circular hole in the first side plate and is slidably connected to the first top plate. Fifth push-type quick clamps are installed on the rear support seats at both the left and right ends. The second top plate is connected to the base. A fourth connecting rod is connected to the pressing end of the fifth push-type quick clamp. The end of the fourth link passes through the round hole of the first side plate and is slidably connected to the second top plate. A fastening nut for locking the push plate is provided at the connection between the first push-type quick clamp and the push plate. The fourth link is threadedly connected to the fastening nut for adjusting the extension length of the fourth link. A fastening nut for locking the first link is provided between the second push-type quick clamp and the first link. The clamping components and methods of the second side plate are the same as those of the first side plate, that is, a left-right symmetrical side plate clamping assembly is provided to clamp the second side plate from the left and right.

[0007] In a preferred embodiment of this utility model, the bow plate clamping assembly includes a push plate and a third connecting rod. A first push-type quick clamp is installed on the support seat at the left front end. The push plate is slidably connected to the support seat. One end of the push plate is connected to the first push-type quick clamp, and the upper part of the other end of the push plate is connected to a first locking rod. The first locking rod passes through the support seat and then through the round hole of the first side plate. A top rod is connected to the bottom of the push plate connected to the first locking rod. The top rod passes through the support seat and is slidably connected to the groove of the bow plate. Through the first locking rod and the top rod, both ends of the bow plate are in contact with the first side plate. A first connecting seat is connected to the base. A third push-type quick clamp is installed on the support seat at the front end. A second connecting rod is slidably connected in the first connecting seat. One end of the second connecting rod is connected to the third push-type quick clamp, and the other end is limitedly engaged with the round hole of the bow plate. The support seat at the right front end... A fourth push-type quick clamp is connected to the base, and a second connecting seat is connected to the base. A limit rod is connected to the left side of the second connecting seat. The limit rod is limited and engaged with the round hole of the bow-shaped plate. One end of the third connecting rod is connected to the fourth push-type quick clamp through the fastening nut. The middle part of the third connecting rod is slidably connected to the support seat. The other end of the third connecting rod is connected to the limit rod. The end of the third connecting rod is pressed and engaged with the bow-shaped plate. Through the support seat and the third connecting rod, the bow-shaped plate is in contact with the second side plate. A third connecting seat is connected to the base. Several limit rods are provided on the top of the third connecting seat. The bottom of the L-shaped plate is placed on the first connecting seat and surrounded by the bow-shaped plate. The round hole at the top of the second side plate is fitted onto the limit rod. The two round holes of the U-shaped plate are fitted onto the limit rod of the third connecting seat. The front side of the U-shaped plate is in contact with the bow-shaped plate.

[0008] In a preferred embodiment of this utility model, the connecting rod that is pressed against the inverter mounting bracket and passes through the circular hole of the inverter mounting bracket and the top plate are all connected with rubber pads, and the rubber pads are in contact with the inverter mounting bracket.

[0009] In a preferred embodiment of this utility model, all the handles of the push-type quick clamps are fitted with anti-slip sleeves.

[0010] In a preferred embodiment of this utility model, each of the limiting rods is provided with a tapered guide rod at its end.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. By using a direct-push quick-clamp drive linkage-top plate mechanism, components such as the first side plate, second side plate, and bow-shaped plate can achieve synchronous displacement and rigid locking during the clamping process. Under the linkage control of multiple quick clamps, the operator can complete the coordinated positioning of multiple components in a single action, eliminating the process interval of traditional step-by-step clamping and improving welding efficiency.

[0013] 2. By using a combination of limit rods and guide rods, the mounting holes of the bow-shaped plate, L-shaped plate, and U-shaped plate are bidirectionally constrained through precise hole-shaft mating. All positioning references are integrated into the support seat and connecting seat on the base, reducing the relative positional error of each component in three-dimensional space and ensuring weld accuracy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the installation structure of the base and inverter mounting bracket of this utility model.

[0016] Figure 3 This is a schematic diagram showing the connection relationship between the first side plate and the bow-shaped plate of this utility model.

[0017] Figure 4 This is a cross-sectional view showing the connection relationship between the first push-type quick clamp and the push plate of this utility model.

[0018] Figure 5 This is a schematic diagram showing the connection relationship between the first top plate and the second straight-push quick clamp of this utility model.

[0019] Figure 6 This is a cross-sectional view showing the connection relationship between the first connecting seat and the second connecting rod of this utility model.

[0020] Figure 7 This is a cross-sectional view showing the connection relationship between the second side plate and the third connecting rod of this utility model.

[0021] Figure 8 This is a schematic diagram showing the connection relationship between the support base and the fourth direct-push quick clamp of this utility model.

[0022] Figure 9 This is a schematic diagram showing the connection relationship between the second connecting seat and the L-shaped plate of this utility model.

[0023] The components in the attached diagram are labeled as follows: 1. Base; 2. Inverter mounting bracket; 201. First side plate; 202. Bow-shaped plate; 203. Second side plate; 204. L-shaped plate; 205. U-shaped plate; 3. Support seat; 4. First push-type quick clamp; 5. Push plate; 6. First locking rod; 601. Top rod; 7. First top plate; 8. Second push-type quick clamp; 801. First connecting rod; 9. First connecting seat; 10. Third push-type quick clamp; 11. Second connecting rod; 12. Second connecting seat; 13. Limiting rod; 14. Fourth push-type quick clamp; 15. Third connecting rod; 16. Third connecting seat; 17. Second top plate; 18. Fifth push-type quick clamp; 19. Fourth connecting rod; 20. Fastening nut; 21. Rubber pad; 22. Anti-slip sleeve; 23. Guide rod. Detailed Implementation

[0024] First, it should be noted that in different described embodiments, the same components are given the same reference numerals or the same component names. The disclosure contained throughout this specification can be applied semantically to the same components having the same reference numerals or the same component names. The location descriptions selected in the specification, such as upper, lower, lateral, etc., also refer to the directly described and illustrated figures and are semantically applied to the new location when the location changes.

[0025] Example: A welding fixture for an inverter mounting bracket, such as Figures 1-9 As shown, the system includes a base 1 and an inverter mounting bracket 2. The inverter mounting bracket 2 is welded together from a first side plate 201, an arc-shaped plate 202, a second side plate 203, an L-shaped plate 204, and a U-shaped plate 205. The base 1 is connected to several connecting seats and several direct-push quick clamps. The direct-push quick clamps clamp the various parts of the inverter mounting bracket 2 through connecting rods and a top plate. Each component of the inverter mounting bracket 2 has several round holes and grooves for clamping. The left and right sides of the arc-shaped plate 202 are welded to the first side plate 201 and the second side plate 203, respectively. The L-shaped plate 204 and the U-shaped plate 205 are welded to the middle of the arc-shaped plate 202. The base 1 is provided with a side plate clamping assembly and an arc plate clamping assembly. The side plate clamping assembly is used to clamp the first side plate 201 and the second side plate 203, and the arc plate clamping assembly is used to clamp the arc-shaped plate 202.

[0026] like Figure 4 and Figure 5As shown, the side plate clamping assembly includes a first top plate 7, a second push-type quick clamp 8, a first connecting rod 801, a second top plate 17, a fifth push-type quick clamp 18, a fourth connecting rod 19, and a fastening nut 20. Support seats 3 are connected to the front, rear, left, and right sides of the top of the base 1. The first top plate 7 is connected to the base 1. The second push-type quick clamp 8 is installed on the rear support seat 3. One end of the first connecting rod 801 is connected to the second push-type quick clamp 8, and the other end passes through the round hole of the first side plate 201 and is slidably connected to the first top plate 7. The fifth push-type quick clamp 18 is installed on the rear support seats 3 at both ends. The second top plate 17 is connected to the base 1. The pressing end of the fifth push-type quick clamp 18 is connected to the fourth connecting rod 19. The end of the fourth connecting rod 19 passes through the round hole of the first side plate 201 and is slidably connected to the second top plate 17. The first push-type quick clamp 4 is connected to the push plate 5. A fastening nut 20 for locking the push plate 5 is provided. The fourth connecting rod 19 is threadedly connected to a fastening nut 20 for adjusting the extension length of the fourth connecting rod 19. A fastening nut 20 for locking the first connecting rod 801 is provided between the second direct-push quick clamp 8 and the first connecting rod 801. The clamping components and methods of the second side plate 203 are the same as those of the first side plate 201, that is, a left-right symmetrical side plate clamping assembly is provided to clamp the second side plate 203 from the left and right. The fastening nut 20 is connected to the push plate 5, connecting rod and other moving parts through threaded engagement. When the operator rotates the nut, an axial clamping force is generated. Rotating the nut on the fourth connecting rod 19 can precisely adjust the extension length of the connecting rod, compensate for the workpiece size tolerance, apply preload to key positioning components such as the first clamping rod 6 and the first connecting rod 801, eliminate clamping gaps, and prevent displacement caused by welding vibration.

[0027] like Figure 4 , Figures 6-9As shown, the bow plate clamping assembly includes a support base 3, a first push-type quick clamp 4, a push plate 5, a first locking rod 6, a top rod 601, a first connecting seat 9, a third push-type quick clamp 10, a second connecting rod 11, a second connecting seat 12, a limiting rod 13, a fourth push-type quick clamp 14, a third connecting rod 15, and a third connecting seat 16. The first push-type quick clamp 4 is installed on the left front support base 3. The push plate 5 is slidably connected to the support base 3. One end of the push plate 5 is connected to the first push-type quick clamp 4, and the upper part of the other end of the push plate 5 is connected to the first locking rod 6. The locking rod 6 passes through the support base 3 and then through the round hole of the first side plate 201. The push plate 5 is connected to the bottom of the first locking rod 6 and is connected to the top rod 601. The top rod 601 passes through the support base 3 and is slidably connected to the groove of the bow-shaped plate 202. Through the first locking rod 6 and the top rod 601, both ends of the bow-shaped plate 202 are in contact with the first side plate 201. The base 1 is connected to the first connecting seat 9. The front support base 3 is equipped with the third straight-push quick clamp 10. The first connecting seat 9 is slidably connected to the second connecting rod 11. One end of the second connecting rod 11 is connected to the third straight-push quick clamp. The third connecting rod 15 is connected to the fourth direct-push quick clamp 14 on the right front support 3. The second connecting seat 12 is connected to the base 1. The left side of the second connecting seat 12 is connected to the limit rod 13, which is matched with the round hole of the bow-shaped plate 202. One end of the third connecting rod 15 is connected to the fourth direct-push quick clamp 14 through the fastening nut 20. The middle part of the third connecting rod 15 is slidably connected in the support 3. The other end of the third connecting rod 15 is connected to the limit rod 13. The end of the third connecting rod 15 is connected to the bow-shaped plate 202. The profile plate 202 is pressed together and connected to the third connecting rod 15 via the support seat 3. The bow-shaped plate 202 is attached to the second side plate 203. The base 1 is connected to the third connecting seat 16. The top of the third connecting seat 16 is provided with several limiting rods 13. The bottom of the L-shaped plate 204 is placed on the first connecting seat 9 and is surrounded by the bow-shaped plate 202. The top round hole of the second side plate 203 is fitted onto the limiting rods 13. The two round holes of the U-shaped plate 205 are fitted onto the limiting rods 13 of the third connecting seat 16. The front side of the U-shaped plate 205 is attached to the bow-shaped plate 202.

[0028] like Figure 5 and Figure 7 As shown, it also includes a rubber pad 21. The connecting rods that are pressed against the inverter mounting bracket 2 and pass through the circular hole of the inverter mounting bracket 2 and the top plate are all connected with rubber pads 21. The rubber pads 21 are in contact with the inverter mounting bracket 2 and are molded from silicone rubber material. They cover the contact surfaces of the first top plate 7, the second top plate 17 and the inverter mounting bracket 2, as well as the surfaces of the first connecting rod 801 and the fourth connecting rod 19 that pass through the circular hole. They generate elastic deformation at the moment of clamping, absorb mechanical impact, prevent the workpiece from sliding, avoid direct contact between metal parts, and reduce scratches on the workpiece surface.

[0029] like Figure 1 and Figure 5As shown, it also includes an anti-slip sleeve 22. All the handles of the direct-push quick clamp are fitted with an anti-slip sleeve 22, which is injection molded from thermoplastic elastomer. The material's damping characteristics can attenuate the transmission of hand vibrations and reduce the operator's fatigue.

[0030] like Figure 1 , Figure 6 , Figure 7 and Figure 9 As shown, it also includes a guide rod 23. The ends of the limiting rod 13 are all provided with tapered guide rods 23. When the tapered surface contacts the edge of the workpiece's circular hole, it automatically corrects the positional deviation within ±2mm. The tapered structure improves the success rate of blind operation and is particularly suitable for complex multi-hole assembly scenarios.

[0031] The operator places the bow-shaped plate 202 on the first connecting seat 9, and fits the right-side circular hole onto the limiting rod 13 on the second connecting seat 12. The guide rod 23 at the end of the limiting rod 13 facilitates its connection with the bow-shaped plate 202. Then, the operator grasps the handle of the third direct-push quick clamp 10 and pulls it to the right, thereby pushing the first connecting seat 9 into the through hole in the middle of the bow-shaped plate 202, completing the basic clamping of the bow-shaped plate 202. The inverter mounting bracket 2 is then removed. The rear end of the first side plate 201 is first fitted onto the first connecting rod 801. Then, one hand holds the first side plate 201, and the other hand pulls the handle of the second direct-push quick clamp 8 backward, pushing the first connecting rod 801 into the first top plate 7, thereby preventing the first side plate 201 from falling. The first side plate 201 is pulled forward, and the rear end of the first side plate 201 is in contact with the rear side of the first top plate 7, while the front end is in contact with the bow-shaped plate 202. At this point, pull the handle of the first push-type quick clamp 4 to the right, pushing the push plate 5 to slide to the right within the support base 3. The first locking rod 6 passes through the through hole of the first side plate 201, and the end of the top rod 601 abuts against the bow-shaped plate 202. Then, tighten the fastening nut 20 on the first locking rod 6 to complete the basic clamping of the first side plate 201. Finally, push the handle of the fifth push-type quick clamp 18, and the fourth connecting rod 19 passes through the first side plate 201 and inserts into the second top plate 17, completing the clamping of the first side plate 201.

[0032] The second side plate 203 is also basically clamped through the first connecting rod 801 and the fourth connecting rod 19, with the front end of the second side plate 203 fitting against the bow-shaped plate 202. Pulling the handle of the fourth direct-push quick clamp 14 to the right pushes the third connecting rod 15, which is connected to the limiting rod 13, through the support seat 3 and into the round hole at the right end of the bow-shaped plate 202, completing the final determination of the position of the bow-shaped plate 202, thus completing the clamping of the bow-shaped plate 202. The bottom of the L-shaped plate 204 is inserted into the middle of the bow-shaped plate 202, and the upper end is fitted onto the limiting rod 13 of the third connecting seat 16. The U-shaped plate 205 is placed directly on the third connecting seat 16, with the two round holes of the U-shaped plate 205 passing through the limiting rod 13, and the front side of the U-shaped plate 205 fitting against the bow-shaped plate 202, completing the clamping of the inverter mounting bracket 2 and performing automated welding.

[0033] After welding is completed, loosen the fastening nut 20 at the end of the first clamp rod 6, pull the handles of all the direct push quick clamps to disengage all the connecting rods and top plate from the inverter mounting bracket 2, and finally remove the inverter mounting bracket 2.

[0034] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by means of equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A welding fixture for an inverter mounting bracket, characterized in that: The system includes a base (1) and an inverter mounting bracket (2). The inverter mounting bracket (2) is welded together from a first side plate (201), an arc-shaped plate (202), a second side plate (203), an L-shaped plate (204), and a U-shaped plate (205). The base (1) is connected to several connecting seats and several push-type quick clamps. The push-type quick clamps clamp the various parts of the inverter mounting bracket (2) through connecting rods and a top plate. Each component of the inverter mounting bracket (2) has several mating clamps. The round hole and groove, the left and right sides of the bow-shaped plate (202) are respectively welded to the first side plate (201) and the second side plate (203), the L-shaped plate (204) and the U-shaped plate (205) are welded to the middle of the bow-shaped plate (202), the base (1) is provided with a side plate clamping assembly and a bow plate clamping assembly, the side plate clamping assembly is used to clamp the first side plate (201) and the second side plate (203), and the bow plate clamping assembly is used to clamp the bow-shaped plate (202).

2. The inverter mounting bracket welding fixture according to claim 1, characterized in that: The side plate clamping assembly includes a first connecting rod (801). Support seats (3) are connected to the top front, rear, left, and right sides of the base (1). A first top plate (7) is connected to the base (1). A second push-type quick clamp (8) is installed on the rear support seat (3). One end of the first connecting rod (801) is connected to the second push-type quick clamp (8), and the other end passes through the round hole of the first side plate (201) and is slidably connected to the first top plate (7). A fifth push-type quick clamp (18) is installed on the rear support seats (3) at both the left and right ends. A second top plate (17) is connected to the base (1). A fourth connecting rod (19) is connected to the pressing end of the fifth push-type quick clamp (18). The end of the fourth connecting rod (19)... The part passes through the round hole of the first side plate (201) and is slidably connected to the second top plate (17). The first push-type quick clamp (4) is provided with a fastening nut (20) for locking the push plate (5) at the connection point. The fourth connecting rod (19) is threadedly connected with the fastening nut (20) for adjusting the extension length of the fourth connecting rod (19). The second push-type quick clamp (8) is provided with the fastening nut (20) for locking the first connecting rod (801) between it and the first connecting rod (801). The clamping components and methods of the second side plate (203) are consistent with those of the first side plate (201), that is, a left-right symmetrical side plate clamping assembly is provided to clamp the second side plate (203) from the left and right.

3. The inverter mounting bracket welding fixture according to claim 2, characterized in that: The bow plate clamping assembly includes a push plate (5) and a third connecting rod (15). A first push-type quick clamp (4) is installed on the support base (3) on the left front side. The push plate (5) is slidably connected to the support base (3). One end of the push plate (5) is connected to the first push-type quick clamp (4). The upper part of the other end of the push plate (5) is connected to a first locking rod (6). The first locking rod (6) passes through the support base (3) and then through the round hole of the first side plate (201). The bottom of the push plate (5) connected to the first locking rod (6) is connected to a top rod (601). The top rod (601) passes through the support base (3) and is slidably connected to the first locking rod (4). The bow-shaped plate (202) is recessed in the groove, and is connected to the first side plate (201) by the first clamping rod (6) and the top rod (601). The two ends of the bow-shaped plate (202) are attached to the first side plate (201). A first connecting seat (9) is connected to the base (1). A third push-type quick clamp (10) is installed on the front support seat (3). A second connecting rod (11) is slidably connected in the first connecting seat (9). One end of the second connecting rod (11) is connected to the third push-type quick clamp (10), and the other end is limited to the round hole of the bow-shaped plate (202). A fourth push-type quick clamp (14) is connected to the support seat (3) on the right front side. A second connecting seat (12) is connected to the base (1). A limiting rod (13) is connected to the left side of the second connecting seat (12). The limiting rod (13) is in a limiting fit with the round hole of the bow-shaped plate (202). One end of the third connecting rod (15) is connected to the fourth direct-push quick clamp (14) through the fastening nut (20). The middle part of the third connecting rod (15) is slidably connected in the support seat (3). The other end of the third connecting rod (15) is connected to the limiting rod (13). The end of the third connecting rod (15) is pressed into the bow-shaped plate (202). The third connecting rod (15) is connected to the support seat (3) through the third connecting rod (15). The bow-shaped plate (202) is attached to the second side plate (203). The base (1) is connected to a third connecting seat (16). The top of the third connecting seat (16) is provided with several limiting rods (13). The bottom of the L-shaped plate (204) is placed on the first connecting seat (9) and surrounded by the bow-shaped plate (202). The top round hole of the second side plate (203) is fitted onto the limiting rod (13). The two round holes of the U-shaped plate (205) are fitted onto the limiting rod (13) of the third connecting seat (16). The front side of the U-shaped plate (205) is attached to the bow-shaped plate (202).

4. The inverter mounting bracket welding fixture according to claim 3, characterized in that: The connecting rods that press against the inverter mounting bracket (2) and pass through the circular holes of the inverter mounting bracket (2) are connected to rubber pads (21), and the rubber pads (21) are in contact with the inverter mounting bracket (2).

5. The inverter mounting bracket welding fixture according to claim 4, characterized in that: All push-type quick clamps have anti-slip sleeves (22) on their handles.

6. The inverter mounting bracket welding fixture according to claim 5, characterized in that: The ends of the limiting rods (13) are all provided with tapered guide rods (23).

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