Variable frequency resistance welding transformer housing structure

Abstract

The utility model provides a kind of frequency conversion resistance welding transformer shell structure, belong to welding equipment technical field, this frequency conversion resistance welding transformer shell structure includes: upper shell, including top plate and two ends fixed cover plate, the lower surface of top plate is provided with plugboard;Lower shell, including bottom plate and two sides expandable side plate, the side plate is hinged in the opposite side edge of bottom plate, the top of side plate is equipped with the insertion slot compatible with plugboard, the bottom of bottom plate is provided with mounting plate;Clamping assembly is set in the junction of upper shell and lower shell, for the locking or release of upper shell and lower shell;When upper shell and lower shell are locked, two cover plates and two side plates are enclosed into shell structure four sides. Compared with the traditional shell structure, the structure greatly reduces the disassembly time and operation complexity, effectively improves the maintenance efficiency, reduces the maintenance cost, and the disassembly process is not easy to damage the shell, ensures good protection performance.

Description

Technical Field

[0001] This utility model belongs to the field of welding equipment technology, and specifically relates to a variable frequency resistance welding transformer housing structure. Background Technology

[0002] A variable frequency resistance spot welding machine is a device that uses variable frequency technology to regulate the welding current. It can make the output current more stable and the adjustable range wider by changing the power supply frequency. During welding, the resistance heat generated by the current passing through the contact surface of the workpiece and the adjacent area is used to melt the local metal to form a weld point. It has the characteristics of fast welding speed, high weld point quality and low energy consumption.

[0003] As a core component of resistance spot welding machines, the variable frequency welding transformer precisely controls the welding current through frequency conversion technology, significantly improving welding quality and efficiency. However, existing variable frequency welding transformers still have the following technical problems in practical applications:

[0004] Currently, traditional transformer casing structures are typically sealed using bolts or welding. On the one hand, while bolted connections theoretically facilitate disassembly, in practice, due to the equipment's long-term exposure to high temperatures and vibrations, bolts are prone to corrosion and thread seizing, requiring specialized tools and being time-consuming and labor-intensive, potentially even damaging the casing or internal components. On the other hand, while welded casings offer better protection, maintenance or troubleshooting requires breaking down the casing structure to access the interior, necessitating re-welding after repairs. This not only increases maintenance costs but may also affect the casing's protection level and overall performance due to welding quality issues. In summary, the existing casing structure of variable frequency welded transformers has significant shortcomings in terms of disassembly convenience and maintenance efficiency, urgently requiring a novel casing structure design to address these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a variable frequency resist welding transformer housing structure, which aims to solve the problem that the existing variable frequency resist welding transformer housing structure is not easy to disassemble, resulting in low transformer maintenance efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a variable frequency weld resistance transformer housing structure, comprising an upper housing, including a top plate and cover plates fixed at both ends, wherein an insert plate is provided on the lower surface of the top plate; a lower housing, including a bottom plate and two unfoldable side plates, wherein the side plates are hinged to opposite sides of the bottom plate, wherein the top of the side plates is provided with slots adapted to the insert plates, and the bottom of the bottom plate is provided with a mounting plate; a locking assembly is provided at the junction of the upper housing and the lower housing for locking or releasing the upper housing and the lower housing; when the upper housing and the lower housing are locked, the two cover plates and the two side plates form the four sides of the housing structure.

[0007] By adopting the above solution, after the locking assembly is unlocked, the upper housing can be quickly separated from the lower housing. At the same time, the side panel of the lower housing can be rotated and unfolded outward to a horizontal position, achieving full opening and quickly forming a maintenance space. Compared with the traditional housing structure, this greatly reduces disassembly time and operational complexity, effectively improving maintenance efficiency.

[0008] As a preferred embodiment of this utility model, the engaging assembly includes a handle and an arched frame. A connecting rod that slides vertically into the handle is fixedly connected to the arched frame. Sleeves are provided on both sides of the top plate. A movable plate is slidably inserted inside the sleeve. A horizontal plate is provided at the bottom of the movable plate. A locking block is provided on the horizontal plate. A locking groove that matches the locking block is provided at the top of the side plate. One end of the movable plate is inclined from top to bottom toward the side closer to the handle. A spring that can push the movable plate inward is provided between the movable plate and the sleeve.

[0009] By adopting the above solution, the locking components can be unlocked simultaneously by pulling the handle. At this time, pulling the handle upwards can easily separate the upper and lower housings. The entire operation process is simple, smooth, labor-saving, and efficient, significantly improving the convenience of maintenance and greatly reducing the operational difficulty and workload of maintenance personnel.

[0010] As a preferred embodiment of this utility model, each of the horizontal plates is provided with two card blocks, and the number and position of the card slots are adapted to the number and position of the card blocks.

[0011] By adopting the above solution, the contact area between the engaging components and the upper and lower housings can be effectively increased, enhancing the interlocking and force uniformity between components, thereby significantly improving the overall structural stability and ensuring a stable connection between the upper and lower housings.

[0012] As a preferred embodiment of this invention, rollers are rotatably connected to the bottom of both ends of the bow-shaped frame.

[0013] By adopting the above solution, the sliding friction between the bow-shaped frame and the movable plate can be converted into rolling friction, which greatly reduces the moving resistance, makes the moving plate move more smoothly and steadily, reduces jamming, and improves the smoothness of operation.

[0014] As a preferred embodiment of this utility model, both ends of the bottom plate and the side plate are provided with folded edges.

[0015] By adopting the above solution, after the upper and lower shells are assembled, the cover plate can be inserted into the corresponding folded edge, making the connection between the upper and lower shells more secure and improving the stability of the structure.

[0016] As a preferred embodiment of this utility model, the bottom plate is provided with blocks on both sides of the top.

[0017] As a preferred embodiment of this utility model, an air duct is provided on one side of the top plate, and a fan is provided inside the air duct. A ventilation hole is provided on the other side of the top plate, and a controller and a temperature sensor are provided on the side plate.

[0018] By adopting the above solution, the fan can be started and stopped according to the internal temperature of the transformer in actual use, ensuring that the transformer is always in a good heat dissipation state and effectively avoiding performance degradation or failure caused by overheating.

[0019] In a preferred embodiment of this utility model, there are multiple ventilation holes, which are distributed in a circular pattern on the cover plate. A rotating block is rotatably connected to the center of the cover plate, and a scraper is provided on the rotating block.

[0020] By adopting the above solution, when the ventilation hole is blocked, rotating the rotating block will cause the scraper to make a circular motion on the surface of the cover plate, which will cause the impurities attached to the surface of the cover plate to fall off. The operation is simple and quick.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. The variable frequency welded transformer housing structure features an upper housing that is locked by a combination of a plug plate and a slot, and a snap-fit ​​assembly. After unlocking, the entire housing can be quickly disassembled. The lower housing side plates can be rotated and unfolded outwards to a horizontal position, achieving full-range opening and quickly creating a maintenance space. Compared with traditional housing structures, this significantly reduces disassembly time and operational complexity, effectively improves maintenance efficiency, reduces maintenance costs, and ensures good protective performance by preventing damage to the housing during disassembly.

[0023] 2. The casing structure of this variable frequency resist-welded transformer is controlled by a temperature sensor linked to the fan. It can automatically start and stop heat dissipation according to the internal temperature of the transformer to avoid overheating failure. Through the cooperation between the rotating block, cover plate and scraper, it can quickly clean up blockages and impurities, making operation convenient and labor-saving, and ensuring ventilation efficiency. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a structural diagram of the present invention during disassembly;

[0027] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0028] Figure 4This is a schematic diagram of the ventilation hole cleaning component in this utility model.

[0029] In the diagram: 1. Top plate; 11. Cover plate; 111. Air duct; 112. Fan; 113. Ventilation hole; 12. Insert plate; 2. Bottom plate; 21. Side plate; 22. Mounting plate; 221. Slot; 23. Stop block; 3. Handle; 31. Bow-shaped frame; 32. Connecting rod; 33. Sleeve plate; 34. Movable plate; 35. Spring; 36. Horizontal plate; 37. Locking block; 38. Locking groove; 4. Rotating block; 41. Scraper; 5. Controller; 6. Temperature sensor; 7. Folded edge. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1

[0032] Please see Figures 1-3 A variable frequency weld resistance transformer housing structure is disclosed. The upper housing includes a top plate 1 and cover plates 11 fixed at both ends. An insert plate 12 is vertically fixed to the lower surface of the top plate 1, and the insert plate 12 is integrally formed with the top plate 1 to ensure structural strength. The lower housing includes a bottom plate 2 and two unfoldable side plates 21. The side plates 21 are hinged to the two sides of the bottom plate 2 via hinges (such as hinges), allowing the side plates 21 to rotate around the sides of the bottom plate 2. A slot 221, matching the shape and size of the insert plate 12, is provided on the top of the side plate 21, penetrating the top of the side plate 21 for easy insertion of the insert plate 12. A mounting plate 22 is welded to the bottom of the bottom plate 2, and mounting holes are provided on the mounting plate 22 for fixing the entire housing structure onto the variable frequency weld resistance transformer equipment. A locking assembly is provided at the junction of the upper and lower housings to lock or release the connection between the upper and lower housings. The engaging assembly includes a handle 3 mounted on the top of the top plate 1, a connecting rod 32 vertically slidably inserted on the handle 3, an arched frame 31 fixedly connected to the top of the connecting rod 32, sleeve plates 33 on both sides of the top plate 1, a movable plate 34 movably inserted inside the sleeve plate 33, a horizontal plate 36 at the bottom of the movable plate 34, a locking block 37 on the horizontal plate 36, a locking groove 38 adapted to the locking block 37 at the top of the side plate 21, one end of the movable plate 34 tilting from top to bottom toward the side closer to the handle 3, and a spring 35 between the movable plate 34 and the sleeve plate 33 that can push the movable plate 34 inward.

[0033] During normal use, the locking assembly is in a locked state, with the locking block 37 inserted into the locking slot 38 and the insert plate 12 inserted into the slot 221, ensuring the firm connection between the upper and lower housings.

[0034] When the frequency conversion welding transformer needs maintenance, the operator presses down on the bow-shaped frame 31 to move it downwards. Because one end of the movable plate 34 is tilted, the bow-shaped frame 31 presses against the tilted surface of the movable plate 34 on both sides, causing the movable plate 34 to move laterally within the sleeve plate 33 against the elastic force of the spring 35. This moves the horizontal plate 36 and the locking block 37 away from the side plate 21, separating the locking block 37 from the slot 38 and unlocking the locking assembly. At this point, pulling up the handle 3 allows the insert plate 12 on the lower surface of the top plate 1 to be pulled out from the slot 221 at the top of the side plate 21, separating the upper and lower housings. Then, the side plate 21 of the lower housing can unfold outwards to a horizontal position around the side of the bottom plate 2, fully exposing the transformer to the maintenance space, facilitating maintenance personnel to perform inspection, maintenance, and component replacement operations.

[0035] In a further optimized structure, rollers are rotatably connected to the bottom ends of the bow-shaped frame 31 via bearings, and the rollers can roll on the inclined surface of the movable plate 34.

[0036] This structure can convert the sliding friction between the bow-shaped frame 31 and the movable plate 34 into rolling friction, which greatly reduces the moving resistance, makes the moving process of the movable plate 34 smoother and more stable, reduces jamming, and improves the smoothness of operation.

[0037] In the further optimized structure, both ends of the base plate 2 and the side plate 21 are provided with flanges 7. When the upper and lower shells are assembled, the cover plate 11 of the upper shell can be inserted into the flanges 7 on both ends of the base plate 2 and the side plate 21, making the connection between the upper and lower shells more secure and improving the stability of the structure.

[0038] In a further optimized structure, each of the horizontal plates 36 is provided with two card blocks 37, and the number and position of the card slots 38 are adapted to the number and position of the card blocks 37.

[0039] The above structure can increase the contact area between the engaging components and the upper and lower housings, enhance the interlocking and force uniformity between components, thereby improving the overall structural stability of the housing and ensuring a stable connection between the upper and lower housings.

[0040] In a further optimized structure, stop blocks 23 are provided on both sides of the top of the base plate 2. When assembling the upper and lower shells, after the two side plates 21 are folded upwards by 90°, the stop blocks 23 can limit their movement, keeping them temporarily upright, making it easier to insert the insert plate 12 at the bottom of the upper shell into the slot 221. The stop blocks 23 can also be made of magnets to improve the limiting effect.

[0041] Example 2

[0042] Please see Figure 3 and Figure 4 This embodiment includes the above embodiment, and further includes: an air duct 111 is provided on the cover plate 11 on one side of the top plate 1, a fan 112 is provided inside the air duct 111, a ventilation hole 113 is provided on the cover plate 11 on the other side of the top plate 1, and a controller 5 and a temperature sensor 6 are provided on the side plate 21.

[0043] In this embodiment, temperature sensor 6 monitors the internal temperature of the transformer in real time and transmits the temperature signal to controller 5. When the temperature signal received by controller 5 exceeds a preset threshold, controller 5 controls fan 112 to start, and air enters from ventilation hole 113, passes through the inside of the transformer, and is discharged from air duct 111 to dissipate heat from the transformer; when the temperature drops below the preset threshold, controller 5 controls fan 112 to stop running.

[0044] In the further optimized structure, there are multiple ventilation holes 113, which are distributed in a circular pattern on the cover plate 11. A rotating block 4 is rotatably connected to the center of the cover plate 11, and a scraper 41 is provided on the rotating block 4.

[0045] If the ventilation hole 113 is blocked by impurities, the operator can manually rotate the rotating block 4. The rotating block 4 drives the scraper 41 to make a circular motion on the surface of the cover plate 11, scraping off the impurities attached to the surface of the cover plate 11, so that the ventilation hole 113 can be unblocked and the ventilation and heat dissipation effect can be guaranteed.

[0046] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 variable frequency resistance welded transformer housing structure, characterized in that, include: The upper housing includes a top plate (1) and a cover plate (11) fixed at both ends. The lower surface of the top plate (1) is provided with an insert plate (12). The lower housing includes a base plate (2) and two unfoldable side plates (21). The side plates (21) are hinged to opposite sides of the base plate (2). The top of the side plates (21) is provided with a slot (221) that is compatible with the insert plate (12). The bottom of the base plate (2) is provided with a mounting plate (22). The locking assembly is located at the junction of the upper and lower housings and is used to lock or release the upper and lower housings. When the upper shell and the lower shell are locked, the two cover plates (11) and the two side plates (21) form the four sides of the shell structure.

2. The variable frequency resistance welded transformer housing structure according to claim 1, characterized in that: The engaging assembly includes a handle (3) and an arched frame (31). A connecting rod (32) is fixedly connected to the arched frame (31) and is vertically slidably inserted into the handle (3). Sleeves (33) are provided on both sides of the top plate (1). A movable plate (34) is slidably inserted inside the sleeve (33). A horizontal plate (36) is provided at the bottom of the movable plate (34). A locking block (37) is provided on the horizontal plate (36). A slot (38) that matches the locking block (37) is provided at the top of the side plate (21). One end of the movable plate (34) is inclined from top to bottom toward the side closer to the handle (3). A spring (35) that can push the movable plate (34) inward is provided between the movable plate (34) and the sleeve (33).

3. The variable frequency resistance welding transformer housing structure according to claim 2, characterized in that: Each of the horizontal plates (36) is provided with two card blocks (37), and the number and position of the card slots (38) are adapted to the number and position of the card blocks (37).

4. The variable frequency resistance welded transformer housing structure according to claim 2, characterized in that: Both ends of the bow-shaped frame (31) are rotatably connected to rollers.

5. The variable frequency resistance welded transformer housing structure according to claim 4, characterized in that: Both ends of the base plate (2) and the side plate (21) are provided with folded edges (7).

6. The variable frequency welded transformer housing structure according to claim 1, characterized in that: Both sides of the top of the base plate (2) are provided with blocks (23).

7. The variable frequency welded transformer housing structure according to claim 1, characterized in that: A duct (111) is provided on the cover plate (11) on one side of the top plate (1), and a fan (112) is provided inside the duct (111). A ventilation hole (113) is provided on the cover plate (11) on the other side of the top plate (1), and a controller (5) and a temperature sensor (6) are provided on the side plate (21).

8. The variable frequency weld resistance transformer housing structure according to claim 7, characterized in that: There are multiple ventilation holes (113), which are distributed in a circular pattern on the cover plate (11). A rotating block (4) is rotatably connected to the middle of the cover plate (11), and a scraper (41) is provided on the rotating block (4).

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