Welding tool for fire-fighting cabinet
By using a servo motor-driven top-feeding mechanism and guiding positioning structure, the problem of physical exhaustion caused by manual lifting in the welding fixtures of fire cabinets has been solved, realizing automatic lifting and precise positioning of fire cabinet components, thereby improving welding quality and production efficiency.
Patent Information
- Application Number
- CN202511345072.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2025-11-04
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During operation, staff need to lift the fire cabinet to the fixed clamping point of the tooling, which results in high physical exertion, increased labor intensity, and reduced work efficiency.
The top-loading mechanism and guide positioning structure driven by a servo motor achieve automatic lifting and precise positioning of fire cabinet components by coordinating the movement of the lead screw and long plate driven by the servo motor, reducing manual operation.
It reduces the labor intensity of workers, improves the working accuracy and production efficiency of welding fixtures, and ensures the consistency of welding quality and the continuity of the production process.
Smart Images
Figure CN120885933A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of welding tooling, in particular to a welding tooling for a fire-fighting cabinet. BACKGROUND
[0002] The welding tooling for a fire-fighting cabinet is a special process equipment for welding operation of the fire-fighting cabinet, mainly functions to ensure the position accuracy and relative attitude stability of each component of the fire-fighting cabinet during welding, precisely positions the cabinet body plate, frame and other parts through a positioning device, prevents dimensional deviation caused by thermal deformation or human operation during welding, simultaneously fixes the workpiece by using a clamping mechanism to ensure that the welded joints are tightly attached and improve the consistency of welding quality, optimizes the welding process, reduces the number of manual adjustments, improves production efficiency, and part of the tooling is provided with a guide structure to assist the welder in welding along the predetermined track to ensure that the weld is uniform and beautiful, in addition, the welding tooling can be designed according to different specifications and structural characteristics of the fire-fighting cabinet to adapt to diversified production needs, plays a key role in ensuring the structural strength and sealing of the fire-fighting cabinet, and is an important process equipment for improving welding accuracy and reliability in mass production of the fire-fighting cabinet.
[0003] However, during implementation of the above technical solution, at least the following technical problems are found: In actual operation, workers often need to lift the fire-fighting cabinet to the fixed clamping point in the tooling, but since the fire-fighting cabinet usually has a certain weight, the lifting action completely relying on manual completion will greatly consume the physical strength of the workers, and when processing fire-fighting cabinet parts in the factory, workers often need to constantly lift the fire-fighting cabinet parts, so workers are prone to fatigue due to excessive consumption of physical strength, which not only affects work efficiency, but also significantly increases labor intensity. SUMMARY
[0004] The technical problem solved by the present application is that in actual operation, workers often need to lift the fire-fighting cabinet to the fixed clamping point in the tooling, but since the fire-fighting cabinet usually has a certain weight, the lifting action completely relying on manual completion will greatly consume the physical strength of the workers, and when processing fire-fighting cabinet parts in the factory, workers often need to constantly lift the fire-fighting cabinet parts, so workers are prone to fatigue due to excessive consumption of physical strength, which not only affects work efficiency, but also significantly increases labor intensity.
[0005] In view of the deficiencies in the prior art, the present application provides a welding tooling for a fire-fighting cabinet, thereby solving the technical problems mentioned in the background art.
[0006] To achieve the above purpose, the present application is implemented by the following technical solutions: The utility model provides a welding tool for fire control cabinet, which comprises a device body, a material lifting mechanism arranged in the device body, a rectangular groove one formed in the device body, an ascending top plate arranged in the rectangular groove one, two support deflection plates movably connected to the two ends of the ascending top plate, a moving long plate two movably connected to the ends of the two support deflection plates, a double -way screw rod arranged in the rectangular groove one, the two ends of the double -way screw rod rotatably connected to the inner wall of the device body, the two ends of the double -way screw rod screwed to the moving long plate two, a hole formed in the device body, a transmission long rod sleeved with the device body through the hole, the left end of the transmission long rod fixedly connected to the double -way screw rod, a servo motor two fixedly connected to the right surface of the device body, and the output port of the servo motor two fixedly connected to the right surface of the transmission long rod.
[0007] Preferably, the rectangular groove one is internally provided with two T-shaped long strips, and the two T-shaped long strips are fixedly connected to the inner wall of the device body.
[0008] Preferably, the lower ends of the two moving long plates two are each provided with two T-shaped grooves corresponding to the positions of the T-shaped long strips, and the two moving long plates two are slidably connected to the two T-shaped long strips through the T-shaped grooves.
[0009] Preferably, the rear end of the device body is fixedly connected to a support base, the upper ends of the support base are each fixedly connected to a fixed long plate, and the side surfaces of the two fixed long plates are each fixedly connected to an L-shaped connecting plate.
[0010] Preferably, the upper surface of the support base is provided with a rectangular groove two, the rectangular groove two is internally provided with a threaded rod, the front end of the threaded rod is rotatably connected to the device body, and the rear end of the threaded rod is rotatably connected to the inner wall of the device body.
[0011] Preferably, the rectangular groove two is internally provided with a moving long plate one, the moving long plate one is screwed to the threaded rod, and the two ends of the threaded rod are each provided with a connecting guide rod.
[0012] Preferably, the front ends of the two connecting guide rods are each fixedly connected to the device body, the rear ends of the two connecting guide rods are each fixedly connected to the support base, and the moving long plate one is movably sleeved with the two connecting guide rods.
[0013] Preferably, the two ends of the moving long plate one are each fixedly connected to a fixed frame, the two fixed frames are each movably sleeved with a lifting block, the lower ends of the two lifting blocks are each fixedly connected to a spring, and the lower ends of the two springs are each fixedly connected to the inner wall of the fixed frame.
[0014] Preferably, the inner walls of the two fixed frames are each fixedly connected to two mutually parallel limiting sliding plates, the two ends of each lifting block are each provided with two limiting sliding grooves, the two lifting blocks are slidably connected to the corresponding limiting sliding plates through the limiting sliding grooves, and the upper ends of the two lifting blocks are each fixedly connected to an arc surface block.
[0015] Preferably, the rear surface of the support base is fixedly connected with a servo motor one, and the output port of the servo motor one is fixedly connected with the threaded rod through the support base.
[0016] Compared with the prior art, the beneficial effects are: 1. In the scheme, when the fire cabinet parts are placed on the device body, the servo motor two is started, the transmission long rod and the bidirectional screw rod are stably rotated, in the rotating process of the bidirectional screw rod, the two moving long plates two threaded on the bidirectional screw rod are synchronously close to each other, at this time, the support deflection plate connected to the moving long plate two moves upward with the closing of the moving long plate, and in turn drives the rising top plate connected with the support deflection plate to stably rise, the rising top plate lifts the fire cabinet parts synchronously in the rising process, until it is accurately lifted to the position corresponding to the clamping and fixing mechanism on the device body, at this time, the workers do not need to manually lift the heavy object, and can directly connect the fire cabinet parts with the clamping and fixing mechanism, effectively avoiding the problem that the traditional manual lifting consumes a lot of physical strength and long-time operation easily causes fatigue, and significantly reducing the labor intensity of workers.
[0017] 2. In the scheme, the T-shaped long strip and the T-shaped slot hole opened at the lower end of the moving long plate two form a cooperation structure, which provides accurate guiding and positioning effect for the sliding of the moving long plate two, and this structure design ensures that the moving long plate two can stably and non-shakingly move in a straight line along the predetermined direction under the driving of the bidirectional screw rod, effectively avoiding the possible deviation or shaking phenomenon in the moving process, and the stable sliding connection mode enables the rising top plate to more accurately control the rising track, so as to accurately lift the fire cabinet parts to the position corresponding to the clamping and fixing mechanism, ensuring the working precision and running stability of the welding tooling, and in turn playing a positive role in improving the welding quality and production efficiency of the fire cabinet; 3. In this scheme, the fixed long plate is connected with the L-shaped connecting plate to form a specific containing space with a notch towards the device main body. The staff can place the stacked fire cabinet parts under the L-shaped connecting plate. At this time, the servo motor one is started, and the threaded rod is uniformly and stably rotated. The moving long plate one and the two fixed frames connected thereto are synchronized to move towards the device main body with the rotation of the threaded rod. The two fixed frames drive the arc block one to move towards the device main body during the movement. The arc surface structure of the arc block can smoothly push the lowermost fire cabinet parts to move forward until they are accurately moved to the upper end position of the rising top plate. At this time, the servo motor one is controlled to output in reverse, and the moving long plate one drives the two fixed frames and the arc block to start resetting. During the resetting process, when the arc block contacts the stacked fire cabinet connecting plate, it will be extruded to push the spring to retract, so that the arc block retracts into the corresponding fixed frame. When the moving long plate one completes the resetting, the elastic force of the spring pushes the lifting block and the arc block to extend again, so that the two arc blocks can accurately push the lowermost fire cabinet parts again, thereby realizing the continuous feeding function. This design cooperates with the top feeding mechanism to make the whole processing flow more coherent and smooth, and improves the production automation degree.
[0018] 4. In this scheme, the arc surface structure of the arc block can reduce the frictional resistance with the parts, avoid scratching or damaging the surface of the parts, and smoothly contact the stacked parts and extrude the spring to retract during the resetting process, ensuring the smoothness of the continuous feeding action, effectively improving the stability of the tool feeding and the conveying quality of the parts. BRIEF DESCRIPTION OF DRAWINGS
[0019] The above description is only a summary of the technical scheme of the present application. In order to more clearly understand the technical means of the present application and can be implemented according to the content of the specification, the following will be described in detail with the preferred embodiments of the present application and with the help of the drawings.
[0020] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the structure of the rising top plate of the present application; Figure 3 It is a schematic diagram of the structure of the T-shaped long strip of the present application; Figure 4 It is a schematic diagram of the structure of the support deflection plate of the present application; Figure 5 It is a schematic diagram of the structure of the L-shaped connecting plate of the present application; Figure 6 It is a schematic diagram of the structure of the arc block of the present application.
[0021] Legend: 11, device body; 12, L-shaped connecting plate; 13, support base; 14, moving long plate one; 15, servo motor one; 16, fixed long plate; 17, servo motor two; 18, support deflection plate; 19, rectangular groove one; 20, rising top plate; 21, T-shaped long strip; 22, moving long plate two; 23, hole; 24, transmission long rod; 25, T-shaped groove hole; 26, bidirectional screw rod; 27, rectangular groove two; 28, connecting guide rod; 29, cam block; 30, fixed frame; 31, threaded rod; 32, spring; 33, lifting block; 34, limiting sliding groove; 35, limiting sliding plate. DETAILED DESCRIPTION
[0022] The preferred embodiments of the present application will be described in detail by referring to the attached drawings, however the present application can be realized in various different forms, therefore the present application is not limited to the embodiments described below, in addition, in order to more clearly describe the present application, components not connected with the invention will be omitted from the attached drawings; The technical solutions in the embodiments of the present application are to solve the problems in the above background art, the general idea is as follows: Embodiments Please refer to Figure 1 and Figure 6As shown, the embodiment introduces a welding tool for fire-fighting cabinet, which comprises a device body 11, the inside of the device body 11 is provided with a material lifting mechanism, which comprises a lifting top plate 20 and two support deflection plates 18, a rectangular groove one 19 is opened in the inside of the device body 11, the lifting top plate 20 is located in the inside of the rectangular groove one 19, the two ends of the lifting top plate 20 are movably hinged with the support deflection plates 18, and the ends away from each other of the two support deflection plates 18 are movably hinged with a moving long plate two 22, when the fire-fighting cabinet parts are placed on the device body 11, the servo motor two 17 is started, the servo motor two 17 drives the transmission long rod 24 and the bidirectional screw rod 26 to stably rotate, in the rotating process of the bidirectional screw rod 26, the two moving long plate two 22 threaded on it are synchronously close to each other, at this time, the support deflection plate 18 connected to the moving long plate two 22 moves upward with the closing of the moving long plate, and in turn drives the lifting top plate 20 connected with the support deflection plate 18 to stably rise, the lifting top plate 20 lifts the fire-fighting cabinet parts synchronously in the lifting process, until it is accurately lifted to the position corresponding to the clamping and fixing mechanism on the device body 11, at this time, the workers do not need to manually lift the heavy object, and can directly connect the fire-fighting cabinet parts with the clamping and fixing mechanism, effectively avoiding the problem that the traditional manual lifting consumes a lot of physical strength and long-time operation easily causes fatigue, significantly reducing the labor intensity of the workers, the inside of the rectangular groove one 19 is provided with a bidirectional screw rod 26, the two ends of the bidirectional screw rod 26 are rotatably connected with the inner wall of the device body 11, the two ends of the bidirectional screw rod 26 are threaded with the moving long plate two 22, the inside of the device body 11 is provided with a hole 23, the device body 11 is provided with a transmission long rod 24 through the hole 23, the left end of the transmission long rod 24 is fixedly connected with the bidirectional screw rod 26, the right surface of the device body 11 is fixedly connected with a servo motor two 17, and the output port of the servo motor two 17 is fixedly connected with the right surface of the transmission long rod 24.
[0023] The interior of the rectangular groove 19 is provided with a T-shaped long strip 21, both of which are fixedly connected with the inner wall of the device main body 11, the lower end of both of the two moving long plates 22 is provided with two T-shaped groove holes 25 corresponding to the position of the T-shaped long strip 21, both of the two moving long plates 22 are slidably connected with the two T-shaped long strips 21 through the T-shaped groove holes 25, and the T-shaped long strip 21 and the T-shaped groove hole 25 opened at the lower end of the moving long plate 22 form a matching structure, which provides accurate guiding and positioning for the sliding of the moving long plate 22. This structure design ensures that the moving long plate 22 can move stably and without shaking in a straight line along the predetermined direction under the drive of the bidirectional screw rod 26, effectively avoiding the deviation or shaking phenomenon that may occur during movement. The stable sliding connection mode enables the rising top plate 20 to more accurately control the rising trajectory, thereby accurately lifting the fire cabinet parts to the position corresponding to the clamping and fixing mechanism, ensuring the working precision and operation stability of the welding tool, and thereby playing a positive role in improving the welding quality and production efficiency of the fire cabinet. The rear end of the device main body 11 is fixedly connected with a supporting base 13, the upper end of the supporting base 13 is fixedly connected with a fixed long plate 16, the side surface of both of the two fixed long plates 16 is fixedly connected with an L-shaped connecting plate 12, and after the fixed long plate 16 is connected with the L-shaped connecting plate 12, a gap is formed towards the specific accommodating space of the device main body 11. The stacked fire cabinet parts can be placed in the area below the L-shaped connecting plate 12 by the staff.
[0024] The upper surface of the supporting base 13 is provided with a rectangular groove 27, the interior of the rectangular groove 27 is provided with a threaded rod 31, the front end of the threaded rod 31 is rotatably connected with the device main body 11, the rear end of the threaded rod 31 is rotatably connected with the inner wall of the device main body 11, the interior of the rectangular groove 27 is provided with a moving long plate 14, and the moving long plate 14 is threadedly sleeved with the threaded rod 31. At this time, the servo motor 15 is started, the servo motor 15 drives the threaded rod 31 to rotate uniformly and stably, and the moving long plate 14 matched with the threaded rod 31 and the two fixed frames 30 connected therewith move synchronously towards the device main body 11 along with the rotation of the threaded rod 31. Both ends of the threaded rod 31 are provided with a connecting guide rod 28, the front end of both of the two connecting guide rods 28 is fixedly connected with the device main body 11, the rear end of both of the two connecting guide rods 28 is fixedly connected with the supporting base 13, and the moving long plate 14 is movably sleeved with both of the two connecting guide rods 28.
[0025] The two ends of the moving long plate 14 are fixedly connected with fixed frames 30, the interiors of the two fixed frames 30 are movably sleeved with lifting blocks 33, the lower ends of the two lifting blocks 33 are fixedly connected with springs 32, the lower ends of the two springs 32 are fixedly connected with the inner walls of the fixed frames 30, the inner walls of the two fixed frames 30 are fixedly connected with two limiting sliding plates 35 parallel to each other, the two ends of each lifting block 33 are provided with two limiting sliding grooves 34, the two lifting blocks 33 are slidably connected with the corresponding limiting sliding plates 35 through the limiting sliding grooves 34, the upper ends of the two lifting blocks 33 are fixedly connected with arc blocks 29, the two fixed frames 30 drive the arc blocks 29 mounted thereon to move towards the device main body 11 during the movement, the arc surface structure of the arc block 29 can stably push the lowermost fire-fighting cabinet part to move forward until it is accurately moved to the upper end position of the rising top plate 20, at this time, the servo motor 15 is controlled to reversely output, the moving long plate 14 drives the two fixed frames 30 and the arc blocks 29 to start resetting, during the resetting, when the arc block 29 contacts the stacked fire-fighting cabinet connecting plate, it will be extruded to push the spring 32 to contract, so that the arc block 29 is retracted into the corresponding fixed frame 30, when the moving long plate 14 completes the resetting, the elastic force of the spring 32 pushes the lifting block 33 and the arc block 29 to extend again, so that the two arc blocks 29 can accurately push the lowermost fire-fighting cabinet part again, thereby realizing the continuous feeding function, the design cooperates with the ejection mechanism, so that the whole processing flow is more coherent and smooth, the production automation degree is improved, the arc surface structure of the arc block 29 can reduce the frictional resistance with the parts, avoids scratching or damaging the surface of the parts, and simultaneously during the resetting, the arc surface can smoothly contact the stacked parts and extrude the spring 32 to retract, so as to ensure the smoothness of the continuous feeding action, effectively improves the stability of the tool feeding and the conveying quality of the parts, the rear surface of the supporting base 13 is fixedly connected with the servo motor 15, and the output port of the servo motor 15 is fixedly connected with the threaded rod 31 through the supporting base 13.
[0026] Working principle: First, when the fire cabinet parts are placed on the device body 11, start the servo motor 2 17, the servo motor 2 17 drives the transmission long rod 24 and the bidirectional screw rod 26 to rotate stably. During the rotation of the bidirectional screw rod 26, the two moving long plates 2 22 connected by threads will move towards each other synchronously. At this time, the support deflection plate 18 connected to the moving long plate 2 22 moves upward with the approaching of the moving long plate, and in turn drives the rising top plate 20 connected to the support deflection plate 18 to rise smoothly. The rising top plate 20 lifts the fire cabinet parts synchronously during the rising process, until it is accurately lifted to the position corresponding to the clamping and fixing mechanism on the device body 11. At this time, the workers do not need to manually lift the heavy object, but can directly connect the fire cabinet parts with the clamping and fixing mechanism, effectively avoiding the problem of consuming a lot of physical strength and long-time operation causing fatigue in traditional manual lifting, significantly reducing the labor intensity of workers. Second, the T-shaped long strip 21 and the T-shaped slot 25 at the lower end of the moving long plate 2 22 form a matching structure, which provides accurate guiding and positioning for the sliding of the moving long plate 2 22. This structure design ensures that the moving long plate 2 22 can move stably and without shaking along the predetermined direction under the drive of the bidirectional screw rod 26, effectively avoiding the deviation or shaking phenomenon that may occur during the movement. The stable sliding connection method enables the rising top plate 20 to control the rising trajectory more accurately, so as to accurately lift the fire cabinet parts to the position corresponding to the clamping and fixing mechanism, ensuring the working precision and running stability of the welding tooling, and in turn playing a positive role in improving the welding quality and production efficiency of the fire cabinet. Third step, after the fixed long plate 16 is connected with the L-shaped connecting plate 12, a gap is formed towards the specific containing space of the device main body 11, the staff can place the stacked fire cabinet parts below the L-shaped connecting plate 12, at this time, the servo motor one 15 is started, the servo motor one 15 drives the threaded rod 31 to rotate uniformly and stably, the moving long plate one 14 cooperating with the threaded rod 31 and the two fixed frames 30 connected thereto will move towards the direction of the device main body 11 synchronously with the rotation of the threaded rod 31, the two fixed frames 30 drive the arc block 29 installed thereon to move towards the device main body 11 during the movement process, the arc structure of the arc block 29 can smoothly push the lowermost fire cabinet parts to move forward until the accurate movement to the upper end position of the rising top plate 20, at this time, the servo motor one 15 is controlled to output reversely, the moving long plate one 14 drives the two fixed frames 30 and the arc block 29 to start resetting, during the resetting process, when the arc block 29 contacts with the stacked fire cabinet connecting plate, it will be extruded to push the spring 32 to contract, so that the arc block 29 is retracted into the corresponding fixed frame 30, when the moving long plate one 14 completes the resetting, the elastic force of the spring 32 will push the lifting block 33 and the arc block 29 to extend again, so that the two arc blocks 29 can accurately push the lowermost fire cabinet parts again, thereby realizing the continuous feeding function. The design cooperates with the top feeding mechanism, so that the whole processing flow is more coherent and smooth, and the production automation degree is improved.
[0027] Fourth step, the arc structure of the arc block 29 can reduce the frictional resistance with the parts, avoid scratching or damaging the surface of the parts, and in the resetting process, the arc can smoothly contact with the stacked parts and extrude the spring 32 to retract, so as to ensure the smoothness of the continuous feeding action, effectively improve the stability of the tool feeding and the conveying quality of the parts.
[0028] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the present application, and are not limitations on the embodiments. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.
Claims
1. A welding fixture for fire cabinets, comprising a main body (11), characterized in that, The device body (11) is provided with a top material mechanism, including a rising top plate (20) and two supporting deflection plates (18). The device body (11) has a rectangular groove (19) inside. The rising top plate (20) is located inside the rectangular groove (19). Both ends of the rising top plate (20) are movably hinged to the supporting deflection plates (18). The two supporting deflection plates (18) are movably hinged to a movable long plate (22) at opposite ends. The rectangular groove (19) is equipped with a bidirectional lead screw (26). Both ends of the bidirectional lead screw (26) are rotatably connected to the inner wall of the device body (11). Both ends of the bidirectional lead screw (26) are threadedly connected to the movable long plate (22). The device body (11) has a hole (23) inside. The device body (11) is fitted with a transmission long rod (24) through the hole (23). The left end of the transmission long rod (24) is fixedly connected to the bidirectional lead screw (26). The right surface of the device body (11) is fixedly connected to a servo motor (17). The output port of the servo motor (17) is fixedly connected to the right surface of the transmission long rod (24).
2. The welding fixture for a fire cabinet as described in claim 1, characterized in that, The rectangular groove (19) is provided with a T-shaped strip (21) inside, and both T-shaped strips (21) are fixedly connected to the inner wall of the main body (11) of the device.
3. The welding fixture for a fire cabinet as described in claim 2, characterized in that, The lower ends of the two movable long plates (22) each have two T-shaped slots (25) corresponding to the positions of the T-shaped strips (21). The two movable long plates (22) are slidably connected to the two T-shaped strips (21) through the T-shaped slots (25).
4. The welding fixture for a fire cabinet as described in claim 1, characterized in that, The rear end of the main body (11) of the device is fixedly connected to a support base (13), and the upper end of the support base (13) is fixedly connected to a fixed long plate (16), and the side surfaces of the two fixed long plates (16) are fixedly connected to an L-shaped connecting plate (12).
5. The welding fixture for a fire cabinet as described in claim 4, characterized in that, The upper surface of the support base (13) is provided with a rectangular groove (27), and a threaded rod (31) is provided inside the rectangular groove (27). The front end of the threaded rod (31) is rotatably connected to the device body (11), and the rear end of the threaded rod (31) is rotatably connected to the inner wall of the device body (11).
6. The welding fixture for a fire cabinet as described in claim 5, characterized in that, The rectangular groove 2 (27) is provided with a movable long plate 1 (14), which is threadedly connected to the threaded rod (31). Both ends of the threaded rod (31) are provided with connecting guide rods (28).
7. The welding fixture for a fire cabinet as described in claim 6, characterized in that, The front ends of the two connecting guide rods (28) are fixedly connected to the main body (11) of the device, and the rear ends of the two connecting guide rods (28) are fixedly connected to the support base (13). The movable long plate (14) is movably sleeved with the two connecting guide rods (28).
8. A welding fixture for a fire cabinet as described in claim 6, characterized in that, Both ends of the movable long plate (14) are fixedly connected to fixed frames (30), and lifting blocks (33) are movably sleeved inside the two fixed frames (30). The lower ends of the two lifting blocks (33) are fixedly connected to springs (32), and the lower ends of the two springs (32) are fixedly connected to the inner wall of the fixed frame (30).
9. A welding fixture for a fire cabinet as described in claim 8, characterized in that, The inner walls of the two fixed frames (30) are fixedly connected to two parallel limiting slide plates (35). Each lifting block (33) has two limiting slide grooves (34) at both ends. The two lifting blocks (33) are slidably connected to the corresponding limiting slide plates (35) through the limiting slide grooves (34). The upper ends of the two lifting blocks (33) are fixedly connected to arc-shaped blocks (29).
10. A welding fixture for a fire cabinet as described in claim 9, characterized in that, A servo motor (15) is fixedly connected to the rear surface of the support base (13). The output port of the servo motor (15) passes through the support base (13) and is fixedly connected to the threaded rod (31).