Welding tool for manufacturing mechanical and electrical equipment

Abstract

The invention belongs to the technical field of welding, and particularly relates to a welding tool for manufacturing mechanical and electrical equipment, which comprises a bottom plate, and a turntable is mounted on the bottom plate; a mounting cavity is formed in the bottom plate, the rotating disc is mounted in the mounting cavity, a mounting ring is mounted on the rotating disc, and a first locking rod is mounted on the side face of the bottom plate and abuts against the mounting ring; a plurality of sets of sliding grooves are evenly formed in the rotating disc around the center line, sliding blocks are installed in the sliding grooves in a sliding mode, compression springs are installed between the sliding blocks, guide rods and adjusting screw rods are installed on the sliding blocks, fixed pressing plates are installed on the guide rods, and the adjusting screw rods drive the fixed pressing plates to move in the vertical direction. The workpiece fixing and welding device is simple in structure, workpieces can be fixed in multiple directions, the workpiece fixing and welding device adapts to fixing of different workpieces with irregular shapes, the angles of the workpieces can be conveniently adjusted, workers can conveniently weld the workpieces, and the workpiece fixing and welding effects are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding, and specifically relates to a welding fixture for manufacturing mechanical and electrical equipment. Background Art

[0002] Mechanical and electrical equipment is a general term for equipment such as generators, transformers, power lines, and circuit breakers in the power system. The important role played by electricity in our life and production cannot be ignored. It brings us great convenience and becomes an important energy source in our production and life. The most crucial factor for the normal operation and transmission of electricity in a power plant is electrical equipment.

[0003] In the use of existing welding fixtures for manufacturing mechanical and electrical equipment, it is found that when an operator welds a workpiece on an operation board, the workpiece needs to be fixed by hand to ensure its stability. This not only reduces the welding efficiency of the operator but also has potential safety hazards, resulting in poor practicability. At the same time, when welding different positions on the workpiece, it is necessary to adjust the angle of the workpiece so that the part to be welded faces the operator for easy welding operation. After the existing welding fixture clamps the workpiece, it is not convenient to adjust the angle of the workpiece. If the fixture is loosened to adjust the angle and then re-clamped, the workpiece is likely to shift, affecting the welding quality of the workpiece. Summary of the Invention

[0004] In order to make up for the deficiencies of the existing technology, fix the workpiece in multiple directions, adapt to the fixation of different and irregularly shaped workpieces, and be able to conveniently adjust the angle of the workpiece to facilitate the welding of the workpiece by the operator and improve the fixation and welding effects of the workpiece, the present invention proposes a welding fixture for manufacturing mechanical and electrical equipment.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: The present invention relates to a welding fixture for manufacturing mechanical and electrical equipment, which includes a bottom plate. A bracket is installed below the bottom plate, and a turntable is installed on the bottom plate. The turntable is used to place the workpiece to be welded. An installation cavity is opened on the bottom plate. The turntable is installed in the installation cavity through a rotating shaft. An installation ring is installed below the turntable. A first locking rod is installed on the side surface of the bottom plate by threading. The first locking rod abuts against the outer side surface of the installation ring. Multiple groups of sliding grooves are evenly opened on the turntable around the center line. Sliders are slidably installed in the sliding grooves. A compression spring is installed between the slider and the side wall of the sliding groove away from the center line of the turntable. A guide rod and an adjusting screw are installed on the slider. A fixed pressing plate is installed on the guide rod. The adjusting screw drives the fixed pressing plate to move in the vertical direction.

[0006] Preferably, an elastic layer is installed on the surface of the fixed pressing plate. The fixed pressing plate is provided with uniformly distributed mounting holes which penetrate through the elastic layer. A telescopic rod is installed in the mounting hole, and the surface of the protruding end of the telescopic rod is flush with the surface of the elastic layer. The telescopic length of the telescopic rod is less than or equal to the elastic deformation amplitude of the elastic layer.

[0007] Preferably, an elastic block is installed on the protruding end of the telescopic rod. The side surface of the elastic block away from the telescopic rod is flush with the surface of the elastic layer. The elastic block and the elastic layer are made of the same material. Anti-slip protrusions are provided on the surfaces of the elastic layer and the elastic block.

[0008] Preferably, a synchronous ring is installed on the outer side surface of the turntable. The cross-section of the synchronous ring is L-shaped. A pull rope is installed on the side surface of the slider facing the synchronous ring. The other end of the pull rope passes through the sliding groove and is installed on the inner side surface of the synchronous ring. A second locking rod is installed on the synchronous ring by means of a thread, and the second locking rod abuts against the outer side surface of the turntable.

[0009] Preferably, a mounting groove is provided on the bottom surface of the slider. The mounting groove is located at one end of the slider away from the synchronous ring. A friction block is hingedly installed in the mounting groove. The end of the friction block away from the synchronous ring is in a free state, and the friction block is in contact with the bottom surface of the sliding groove.

[0010] Preferably, the thickness of the end of the friction block away from the synchronous ring is greater than the thickness of the end of the friction block close to the synchronous ring, and there is a gap between the friction block and the bottom surface of the mounting groove.

[0011] Preferably, the end of the sliding groove close to the synchronous ring penetrates through the outer side surface of the turntable. A stop block is installed at the end of the sliding groove close to the synchronous ring. A triangular elastic groove is provided on the stop block. An extrusion block is installed in the elastic groove. A locking screw is installed on the stop block. The lower end of the locking screw is rotatably connected to the extrusion block. Both ends of the compression spring are respectively connected to the stop block and the slider. The pull rope passes through the through hole on the stop block.

[0012] Preferably, uniformly distributed positioning holes are provided on the surface of the turntable. A limiting rod is installed in the positioning hole. The workpiece is located in the area surrounded by the limiting rods. A magnetic block is installed at one end of the limiting rod located in the positioning hole. A sticky silica gel layer is installed on the surface of the turntable.

[0013] The beneficial effects of the present invention are as follows: 1. The welding tooling for manufacturing mechanical and electrical equipment according to the present invention fixes the workpiece in multiple directions by arranging a bottom plate, a turntable, a chute, a compression spring, a slider, and a fixed pressing plate, can adapt to different workpieces with irregular shapes for fixing, improves the fixing effect of the workpiece, ensures the stability of the workpiece during the welding process. At the same time, when welding different parts of the workpiece, the operator rotates the turntable to face the part to be welded towards the operator, so as to facilitate the welding operation and improve the welding effect of the workpiece.

[0014] 2. The welding tooling for manufacturing mechanical and electrical equipment according to the present invention synchronously moves the slider when the operator rotates the synchronous ring by arranging a synchronous ring, a pull rope, and a second locking rod, so that the slider and the fixed pressing plate can be moved together, avoiding the operator needing to move each slider and fixed pressing plate in turn, reducing the operation steps when the welding tooling fixes the workpiece, and accelerating the operation efficiency of the operator.

[0015] 3. The welding tooling for manufacturing mechanical and electrical equipment according to the present invention, when the workpiece is fixed by arranging a fixed pressing plate, an elastic layer, a telescopic rod, and a friction block, can be blocked and restricted by the uncompressed telescopic rod to ensure the fixing effect of the workpiece. At the same time, the friction block decelerates and buffers the movement of the slider towards the workpiece, so that the fixed pressing plate can slowly contact and press on the workpiece, further improving the fixing effect of the workpiece, and avoiding damage to the edge of the workpiece or the workpiece being squeezed out or ejected from between the fixed pressing plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 is a perspective view of the welding tooling of the present invention; Figure 2 is a cross-sectional view of the welding tooling of the present invention from the first perspective; Figure 3 is a cross-sectional view of the welding tooling of the present invention from the second perspective; Figure 4 is a schematic diagram of the installation position of the stopper and the slider in the welding tooling of the present invention; Figure 5 is a schematic diagram of the structure of the slider and the fixed pressing plate in the welding tooling of the present invention; Figure 6 is a schematic diagram of the structure of the turntable and the mounting ring in the welding tooling of the present invention; Figure 7 is Figure 2 a partial enlarged view of part A in Figure 8 is Figure 2 a partial enlarged view of part B in Figure 9Yes Figure 3 Partial enlarged view at position C in Figure 10 Yes Figure 5 Partial enlarged view at position D in In the figure: base plate 1, installation cavity 11, rotating shaft 12, positioning guide wheel 13, turntable 2, chute 21, installation ring 22, guide groove 221, first locking rod 222, positioning hole 23, limiting rod 231, fixed pressing plate 3, slider 31, guide rod 311, adjusting screw 312, elastic layer 32, friction block 33, installation groove 331, compression spring 34, telescopic rod 35, elastic block 351, stop block 4, elastic groove 41, extrusion block 42, locking screw 43, pull rope 44, synchronous ring 5, second locking rod 51. Specific embodiments

[0018] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0019] As Figures 1 to 10 shown, a welding fixture for manufacturing a mechanical and electrical equipment according to the present invention includes a base plate 1, a bracket is installed below the base plate 1, and a turntable 2 is installed on the base plate 1, and the turntable 2 is used for placing workpieces to be welded; An installation cavity 11 is opened on the base plate 1, the turntable 2 is installed in the installation cavity 11 through a rotating shaft 12, an installation ring 22 is installed below the turntable 2, and a first locking rod 222 is installed on the side surface of the base plate 1 by means of a thread, and the first locking rod 222 abuts against the outer side surface of the installation ring 22; Among them, in order to ensure the rotation of the turntable 2, a guide groove 221 is opened on the inner side surface of the installation ring 22, and multiple groups of positioning guide wheels 13 are installed in the installation cavity 11, so that the positioning guide wheels 13 and the guide groove 221 match each other, so as to ensure that the turntable 2 can rotate stably and avoid the situation of skewing and shaking of the turntable 2; Multiple groups of chutes 21 are evenly opened on the turntable 2 around the center line, sliders 31 are slidably installed in the chutes 21, a compression spring 34 is installed between the slider 31 and the side wall of the chute 21 far from the center line of the turntable 2, a guide rod 311 and an adjusting screw 312 are installed on the slider 31, and a fixed pressing plate 3 is installed on the guide rod 311, and the adjusting screw 312 drives the fixed pressing plate 3 to move in the vertical direction; When performing welding operations on components of mechanical and electrical equipment during the manufacturing process, the staff move each slider 31 and the fixed pressing plate 3 on the turntable 2 away from the center of the turntable 2 and lock them, leaving the central area of the turntable 2 idle. This facilitates the staff to place the workpiece to be welded on the surface of the turntable 2. Subsequently, the staff release each slider 31 and the fixed pressing plate 3 in sequence. As a result, the slider 31 and the fixed pressing plate 3 approach the workpiece under the action of the compression spring 34, causing the fixed pressing plate 3 to contact and press the edge of the workpiece, positioning and fixing the workpiece to be welded, ensuring the position stability of the workpiece during the welding process, improving the welding effect of the workpiece, and enabling the workpiece to be firmly fixed without the need for the staff to hold it by hand during the welding process, ensuring the stability of the workpiece, improving the welding effect of the staff, and avoiding potential safety hazards. At the same time, since multiple sets of chutes 21, sliders 31, and fixed pressing plates 3 are provided on the turntable 2, the workpieces placed on the turntable 2 can be fixed and locked from multiple directions, improving the fixing effect of the workpieces and adapting to the fixing of workpieces with different shapes and sizes. Therefore, when welding different workpieces, according to the changes in the shape and size of the workpieces, the fixed pressing plates 3 at different positions can be used to fully clamp and fix the workpieces, ensuring good fixing effect of the workpieces and preventing the workpieces from moving during welding, which may affect the welding quality and effect of the workpieces. Also, when the shape of the workpiece is irregular, resulting in the fixed pressing plate 3 not being able to accurately and fully contact and press the edge of the workpiece, the staff rotate the adjusting screw 312 on the slider 31, causing the height of the fixed pressing plate 3 relative to the slider 31 to change. Thus, the fixed pressing plates 3 corresponding to different regions at the edge of the workpiece can accurately contact and press on the side surface of the workpiece, ensuring full and stable pressing and fixing of the workpiece by the fixed pressing plate 3, and preventing insufficient contact between the fixed pressing plate 3 and the side surface of the workpiece, which may lead to uneven stress on the workpiece, affecting the fixing effect of the workpiece and posing potential safety hazards. At the same time, since the turntable 2 is installed on the bottom plate 1 through the rotating shaft 12, when welding different positions on the workpiece is required, the staff turn the first locking rod 222 on the bottom plate 1, so that the first locking rod 222 no longer abuts against the outer side surface of the mounting ring 22, releasing the locking of the turntable 2. Then, the staff can easily rotate the turntable 2, enabling the fixed workpiece on the turntable 2 to be rotated to a suitable angle, that is, the welding part on the workpiece faces the staff. Subsequently, the turntable 2 is locked again using the first locking rod 222, facilitating the staff to perform welding operations on the workpiece, avoiding the need to re-clamp the workpiece and preventing the workpiece from shifting, ensuring the welding quality of the workpiece.

[0020] As an embodiment of the present invention, an elastic layer 32 is installed on the surface of the fixed pressing plate 3. The fixed pressing plate 3 is provided with uniformly distributed mounting holes, which penetrate through the elastic layer 32. A telescopic rod 35 is installed in the mounting holes. The surface of the protruding end of the telescopic rod 35 is flush with the surface of the elastic layer 32. The telescopic length of the telescopic rod 35 is less than or equal to the elastic deformation amplitude of the elastic layer 32; By installing the elastic layer 32 on the surface of the fixed pressing plate 3, when the fixed pressing plate 3 presses the edge of the fixed workpiece, it can avoid the hard extrusion between the fixed pressing plate 3 and the workpiece, and avoid damage to the edge of the workpiece during fixation; At the same time, when the fixed pressing plate 3 fixes the workpiece, the elastic layer 32 will be deformed under the action of force. At this time, there is an interlacing between the edge of the workpiece and the surface of the undeformed area on the elastic layer 32. The telescopic rods 35 in the undeformed area on the elastic layer 32 still protrude, which will cause the protruding ends of the telescopic rods 35 in the protruding state to exceed the edge of the workpiece, producing a blocking and locking effect on the workpiece, improving the fixing effect of the workpiece, and avoiding the situation that the workpiece slides out from the fixed pressing plate 3 during the welding process or the workpiece is extruded or bounced out from between the fixed pressing plates 3 due to uneven force, avoiding potential safety hazards and avoiding affecting the welding effect of the workpiece; At the same time, by making the mounting holes penetrate through the elastic layer 32 and the protruding end of the protruding rod is located in the mounting hole in the elastic layer 32, the protruding end of the protruding rod can be protected by the elastic layer 32, reducing the possibility of damage to the protruding end of the protruding rod. At the same time, when the workpiece is fixed, the protruding rods in the undeformed area on the elastic layer 32 will be connected as a whole under the action of the elastic layer 32. Therefore, the force received by the protruding end of the telescopic rod 35 directly contacting the edge of the workpiece can be distributed to other telescopic rods 35 in the protruding state, thereby avoiding excessive force on the protruding rod directly contacting the edge of the workpiece and being damaged, affecting the normal use of the telescopic rod 35 and the fixing effect of the workpiece.

[0021] As an embodiment of the present invention, an elastic block 351 is installed on the protruding end of the telescopic rod 35. The side surface of the elastic block 351 away from the telescopic rod 35 is flush with the surface of the elastic layer 32. The elastic block 351 and the elastic layer 32 are made of the same material. Anti-slip protrusions are provided on the surfaces of the elastic layer 32 and the elastic block 351; Since the telescopic rods 35 are evenly distributed on the fixed pressing plate 3 and the protruding ends of the telescopic rods 35 are located in the mounting holes in the elastic layer 32, there will be gaps between the protruding ends of the telescopic rods 35. At this time, it is possible that the edge of the workpiece is exactly located in the gap between the protruding ends of the telescopic rods 35 in the extended state and the compressed state, that is, the edge of the workpiece does not exactly contact the protruding ends of the telescopic rods 35, so that there is space for the workpiece to slide or shake, that is, the workpiece may slide or shake. Therefore, anti-slip protrusions are provided on the surfaces of the elastic blocks 351 and the elastic layer 32 to further fix the workpiece and prevent the possible sliding or shaking of the workpiece, ensuring that the workpiece is firmly and stably fixed.

[0022] As an embodiment of the present invention, a synchronous ring 5 is installed on the outer side surface of the turntable 2. The cross-section of the synchronous ring 5 is L-shaped. A pull rope 44 is installed on the side surface of the slider 31 facing the synchronous ring 5. The other end of the pull rope 44 passes through the chute 21 and is installed on the inner side surface of the synchronous ring 5. A second locking rod 51 is installed on the synchronous ring 5 by means of a thread, and the second locking rod 51 abuts against the outer side surface of the turntable 2. Since multiple groups of chutes 21 and fixed pressing plates 3 are installed on the turntable 2, when the workpiece is fixed on the welding fixture, the staff needs to move the slider 31 and the fixed pressing plate 3 multiple times and frequently, making the operation of the staff relatively cumbersome and the operation efficiency of the staff relatively low. Therefore, by providing the synchronous ring 5 and the pull rope 44, when it is necessary to move the slider 31 and the fixed pressing plate 3 towards the edge of the turntable 2, the staff rotates the second locking rod 51 to release the locking of the synchronous ring 5 by the second locking rod 51. Then, the staff rotates the synchronous ring 5, so that the synchronous ring 5 pulls the pull rope 44, increasing the length of the part of the pull rope 44 outside the chute 21, that is, the slider 31 and the fixed pressing plate 3 move towards the edge of the turntable 2, leaving the area in the middle of the turntable 2 free, facilitating the placement of the workpiece on the turntable 2. Then, the staff releases the rotation of the synchronous ring 5, so that the slider 31 and the fixed pressing plate 3 fix the workpiece. At the same time, due to the action of the synchronous ring 5 and the pull rope 44, the staff can move all the sliders 31 and fixed pressing plates 3 at the same time, avoiding the need for the staff to move each slider 31 and fixed pressing plate 3 sequentially and repeatedly, reducing the operation steps of the staff, reducing the operation complexity, and improving the operation efficiency of the staff and the welding efficiency of the staff for the workpiece.

[0023] As an implementation manner of the present invention, an installation groove 331 is formed on the bottom surface of the slider 31. The installation groove 331 is located at one end of the slider 31 away from the synchronous ring 5. A friction block 33 is hingedly installed in the installation groove 331. One end of the friction block 33 away from the synchronous ring 5 is in a free state, and the friction block 33 is in contact with the bottom surface of the chute 21. After the workpiece is placed in the middle area of the turntable 2, the staff will release the lock on the synchronous ring 5, so that the slider 31 and the fixed pressing plate 3 quickly move towards the workpiece under the action of the compression spring 34, and then the fixed pressing plate 3 squeezes and fixes the workpiece. During this process, the slider 31 and the fixed pressing plate 3 move towards the workpiece relatively fast under the action of the compression spring 34. When the fixed pressing plate 3 touches the edge of the workpiece, there will be a situation where the side of the workpiece is damaged by impact or the workpiece is extruded or knocked off after being impacted by the fixed pressing plate 3, resulting in poor fixing effect of the workpiece or the workpiece falling off, which affects the fixing of the workpiece by the welding tooling. Therefore, a friction block 33 is installed at the bottom of the slider 31. Since the friction block 33 is hingedly installed, when the slider 31 is pulled by the pull rope 44 and moves away from the workpiece, the friction block 33 is equivalent to being dragged, and the acting force between the friction block 33 and the bottom surface of the chute 21 is relatively small, so it will not affect the movement of the slider 31 away from the workpiece. At the same time, when the lock of the synchronous ring 5 is released by the staff and the slider 31 quickly moves towards the workpiece under the action of the compression spring 34, the friction block 33 is equivalent to being pushed to move. And during the movement, the acting force between the friction block 33 and the bottom surface of the chute 21 will gradually increase and the friction force will be relatively large under the action of gravity, so as to buffer and decelerate the movement of the slider 31 towards the workpiece, and avoid the fixed pressing plate 3 directly hitting or impacting the side of the workpiece, ensuring that the side of the workpiece is not easily damaged and the fixing effect of the welding tooling on the workpiece is good.

[0024] As an implementation manner of the present invention, the thickness of one end of the friction block 33 away from the synchronous ring 5 is greater than the thickness of one end of the friction block 33 close to the synchronous ring 5, and there is a gap between the friction block 33 and the bottom surface of the installation groove 331. Since the thickness of the friction block 33 close to the workpiece is relatively large, that is, the weight of the friction block 33 close to the workpiece is relatively large. Therefore, when the slider 31 moves towards the workpiece, the self-gravity of the friction block 33 will make the acting force between the end of the friction block 33 close to the workpiece and the bottom surface of the chute 21 relatively large. And combined with the hinged installation of the friction block 33 and the friction block 33 being pushed towards the workpiece, it will make the friction block 33 and the bottom surface of the chute 21 closely adhere to each other, and the acting force between them will slowly increase, so as to ensure the full contact between the friction block 33 and the bottom surface of the chute 21, and further ensure the buffering and deceleration of the movement of the friction block 33 on the slider 31 towards the workpiece.

[0025] As an embodiment of the present invention, one end of the sliding groove 21 close to the synchronizing ring 5 penetrates through the outer side surface of the turntable 2. A stop block 4 is installed at one end of the sliding groove 21 close to the synchronizing ring 5. A triangular elastic groove 41 is formed on the stop block 4. An extrusion block 42 is installed in the elastic groove 41. A locking screw 43 is installed on the stop block 4. The lower end of the locking screw 43 is rotatably connected to the extrusion block 42. Two ends of the compression spring 34 are respectively connected to the stop block 4 and the slider 31. The pulling rope 44 passes through a through hole on the stop block 4; When welding different workpieces, the shapes of different workpieces are different, and the outer shape of the workpiece is not necessarily a regular shape. At this time, the sliders 31 at different positions need to move different distances to drive the fixed pressing plate 3 to fix the workpiece. That is, the acting forces of the compression springs 34 on the sliders 31 are different, so that the fixing acting forces of the welding workpiece on different positions of the workpiece are different, which easily affects the fixing effect of the workpiece and the stability of the workpiece fixing. At the same time, one end of the sliding groove 21 close to the synchronizing ring 5 penetrates through the outer side surface of the turntable 2, that is, one end of the sliding groove 21 is in an open state, and a retaining ring is installed at the open end of the slider 31, so that the stop block 4 in the sliding groove 21 can move and be disassembled, which is convenient for the installation and replacement of the slider 31, the compression spring 34 and the pulling rope 44. At the same time, when fixing different workpieces, by adjusting the position of the stop block 4 in the sliding groove 21, as much as possible, when different sliders 31 and fixed pressing plates 3 fix the workpiece, the distance between the slider 31 and the stop block 4 is the same, that is, the acting forces of the compression springs 34 on the sliders 31 are the same, so as to ensure that when the welding tooling fixes different workpieces with irregular shapes, the fixing acting forces received by all parts of the workpiece are the same, improving the fixing effect of the workpiece and the stability of the workpiece during the welding process; At the same time, after the stop block 4 is installed in the sliding groove 21 and the relative position of the stop block 4 is adjusted, the worker uses a tool to turn the locking screw 43, so that the locking screw 43 drives the extrusion block 42 to move downward in the elastic groove 41, thereby using the extrusion block 42 to extrude the triangular elastic groove 41, so that the gap at the lower end of the triangular elastic groove 41 expands, that is, the stop block 4 expands and gets stuck in the sliding groove 21, completing the installation of the stop block 4. At the same time, since the stop block 4 can be conveniently disassembled and installed in the sliding groove 21, when installing workpieces with different shapes, according to the characteristics of the workpiece shape, the number of sliders 31 and fixed pressing plates 3 for fixing on the turntable 2 is adjusted, so as to reduce the number of sliders 31 and fixed pressing plates 3 used while ensuring sufficient fixation of the workpiece, and avoid too many sliders 31 and fixed pressing plates 3 on the turntable 2 affecting or interfering with the placement and fixation of workpieces with irregular shapes.

[0026] As an implementation manner of the present invention, positioning holes 23 are evenly distributed on the surface of the turntable 2. A limiting rod 231 is installed in the positioning hole 23. The workpiece is located in the area surrounded by the limiting rods 231. A magnetic block is installed at one end of the limiting rod 231 located in the positioning hole 23. A silicone layer with adhesiveness is installed on the surface of the turntable 2; By providing positioning holes 23 on the turntable 2 and installing limiting rods 231 in the positioning holes 23, the limiting rods 231 form a barrier and limit around the workpiece to be welded. Thus, when the staff places the workpiece on the turntable 2, the position of the workpiece is relatively accurate, facilitating the subsequent fixing effect of the workpiece and avoiding excessive position deviation when the workpiece is placed. When the fixing pressing plate 3 fixes the workpiece, the fixing pressing plate 3 will push the workpiece to move a large distance on the surface of the turntable 2, resulting in wear and scratches on the surfaces of the workpiece and the turntable 2, affecting the quality of the workpiece. At the same time, by installing a silicone layer with adhesiveness on the surface of the turntable 2, direct contact between the workpiece and the surface of the turntable 2 can be avoided, reducing the wear on both surfaces. After the workpiece is placed on the silicone layer, due to the adhesiveness, the position of the workpiece is not likely to move, preventing the workpiece from moving or the workpiece from touching or squeezing the limiting rods 231, ensuring the fixing effect on the workpiece.

[0027] The specific working process is as follows: The staff moves each slider 31 and the fixing pressing plate 3 on the turntable 2 away from the center of the turntable 2 and locks them, making the central area of the turntable 2 idle. The staff places the workpiece to be welded on the surface of the turntable 2. Then, the staff releases each slider 31 and the fixing pressing plate 3 in turn. The sliders 31 and the fixing pressing plate 3 approach the workpiece under the action of the compression spring 34, and then the fixing pressing plate 3 contacts and presses the edge of the workpiece to position and fix the workpiece to be welded; At the same time, since multiple groups of chutes 21, sliders 31 and fixing pressing plates 3 are provided on the turntable 2, the workpieces placed on the turntable 2 can be fixed and locked from multiple directions and can adapt to the fixing of workpieces with different shapes and sizes; At the same time, when the shape of the workpiece is irregular, resulting in the fixing pressing plate 3 not being able to accurately and fully contact and press the edge of the workpiece, the staff rotates the adjusting screw 312 on the slider 31, causing the height of the fixing pressing plate 3 relative to the slider 31 to change, so that the fixing pressing plates 3 corresponding to different areas at the edge of the workpiece can accurately contact and press on the side of the workpiece; When welding different positions on the workpiece, the operator turns the first locking rod 222 on the base plate 1 to release the locking of the turntable 2. After that, the operator can easily turn the turntable 2 so that the workpiece fixed on the turntable 2 can be rotated to a suitable angle, that is, the welding part on the workpiece faces the operator. Then, the turntable 2 is locked again using the first locking rod 222; By installing an elastic layer 32 on the surface of the fixed pressing plate 3, when the fixed pressing plate 3 presses the edge of the workpiece, hard extrusion between the fixed pressing plate 3 and the workpiece is avoided; At the same time, when the fixed pressing plate 3 fixes the workpiece, the elastic layer 32 will be subjected to a force and then deform. At this time, there is an interlacing between the edge of the workpiece and the surface of the non-elastically deformed area on the elastic layer 32, and the telescopic rods 35 in the non-deformed area of the elastic layer 32 still protrude. This will cause the protruding ends of the telescopic rods 35 in the protruding state to exceed the edge of the workpiece, producing a blocking and locking effect on the workpiece; At the same time, by making the installation hole penetrate the elastic layer 32 and the protruding end of the protruding rod be located in the installation hole in the elastic layer 32, the protruding end of the protruding rod can be protected by the elastic layer 32. At the same time, when the workpiece is fixed, the protruding rods in the non-deformed area of the elastic layer 32 will be connected as a whole under the action of the elastic layer 32. Thus, the force received by the protruding end of the telescopic rod 35 directly contacting the edge of the workpiece can be distributed to other telescopic rods 35 in the protruding state, avoiding damage to the protruding rod directly contacting the edge of the workpiece due to excessive force; Since the telescopic rods 35 are evenly distributed on the fixed pressing plate 3 and the protruding ends of the telescopic rods 35 are located in the installation holes in the elastic layer 32, there will be a gap between the protruding ends of the telescopic rods 35. At this time, there will be a space for the workpiece to slide or shake, that is, the workpiece may slide or shake. Therefore, anti-slip protrusions are provided on the surfaces of the elastic blocks 351 and the elastic layer 32 to further fix the workpiece; By providing a synchronous ring 5 and a pull rope 44, when it is necessary to move the slider 31 and the fixed pressing plate 3 towards the edge direction of the turntable 2, the operator turns the second locking rod 51 to release the locking of the synchronous ring 5. After that, the operator turns the synchronous ring 5, causing the synchronous ring 5 to pull the pull rope 44, increasing the length of the part of the pull rope 44 outside the chute 21. That is, the slider 31 and the fixed pressing plate 3 move towards the edge direction of the turntable 2, leaving the area in the middle of the turntable 2 free for the workpiece to be placed on the turntable 2. Then, the operator releases the rotation of the synchronous ring 5, causing the slider 31 and the fixed pressing plate 3 to fix the workpiece; Meanwhile, through the action of the synchronization ring 5 and the pull rope 44, the staff can move all the sliders 31 and the fixed pressing plates 3 simultaneously, avoiding the need for the staff to move each slider 31 and the fixed pressing plate 3 sequentially and repeatedly; A friction block 33 is installed at the bottom of the slider 31. Since the friction block 33 is hingedly installed, when the slider 31 is pulled by the pull rope 44 and moves away from the workpiece, the friction block 33 is equivalent to being dragged, and the acting force between the friction block 33 and the bottom surface of the chute 21 is relatively small, which will not affect the movement of the slider 31 away from the workpiece. At the same time, when the locking of the synchronization ring 5 is released by the staff and the slider 31 moves rapidly towards the workpiece under the action of the compression spring 34, the friction block 33 is equivalent to being pushed to move. And during the movement, the acting force between the friction block 33 and the bottom surface of the chute 21 will gradually increase under the action of gravity, and the friction force is relatively large, so as to buffer and decelerate the movement of the slider 31 towards the workpiece; Since the thickness of the friction block 33 near the workpiece end is relatively large, that is, the weight of the friction block 33 near the workpiece end is relatively large. Therefore, when the slider 31 moves towards the workpiece, the self-gravity of the friction block 33 will make the acting force between the end of the friction block 33 near the workpiece and the bottom surface of the chute 21 relatively large. And combined with the hinged installation of the friction block 33 and the friction block 33 being pushed towards the workpiece, the friction block 33 and the bottom surface of the chute 21 will be in close contact with each other, and the acting force between them will increase slowly, ensuring full contact between the friction block 33 and the bottom surface of the chute 21, and ensuring the buffering and deceleration of the movement of the slider 31 towards the workpiece by the friction block 33; When fixing different workpieces, by adjusting the position of the stopper 4 in the chute 21, as much as possible, when different sliders 31 and fixed pressing plates 3 fix the workpiece, the distance between the slider 31 and the stopper 4 is the same, that is, the acting force of the compression spring 34 received by the slider 31 is the same, ensuring that when the welding fixture fixes different and irregularly shaped workpieces, the fixing acting forces received by all parts of the workpiece are the same; At the same time, after the stopper 4 is installed in the chute 21 and the relative position of the stopper 4 is adjusted, the staff uses a tool to turn the locking screw 43, so that the locking screw 43 drives the extrusion block 42 to move downward in the elastic groove 41, thereby using the extrusion block 42 to extrude the triangular elastic groove 41, so that the gap at the lower end of the triangular elastic groove 41 expands, that is, the stopper 4 expands and gets stuck in the chute 21; By providing positioning holes 23 on the turntable 2 and installing limit rods 231 in the positioning holes 23, the limit rods 231 form a barrier and limit around the workpiece to be welded, thereby ensuring that when the worker places the workpiece on the turntable 2, the position of the workpiece is relatively accurate. At the same time, by installing a sticky silicone layer on the surface of the turntable 2, direct contact between the workpiece and the surface of the turntable 2 can be avoided, reducing wear on the surfaces of both.

[0028] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding tool for manufacturing mechanical and electrical equipment, comprising a base plate (1), a bracket being installed below the base plate (1), a turntable (2) being installed on the base plate (1), and the turntable (2) being used to place a workpiece to be welded; Features: The bottom plate (1) is provided with a mounting cavity (11), the rotating disk (2) is mounted in the mounting cavity (11) via a rotating shaft (12), a mounting ring (22) is mounted below the rotating disk (2), a first locking rod (222) is threadedly mounted on a side surface of the bottom plate (1), and the first locking rod (222) abuts against an outer surface of the mounting ring (22); A plurality of groups of slide grooves (21) are evenly arranged around the center line of the turntable (2), a slider (31) is slidably installed in the slide groove (21), a compression spring (34) is installed between the slider (31) and the side wall of the slide groove (21) at one end away from the center line of the turntable (2), a guide rod (311) and an adjusting screw (312) are installed on the slider (31), a fixed pressure plate (3) is installed on the guide rod (311), and the adjusting screw (312) drives the fixed pressure plate (3) to move in a vertical direction.

2. According to claim 1, a welding tool for manufacturing mechanical and electrical equipment, characterized in that: An elastic layer (32) is installed on the surface of the fixed pressure plate (3), and evenly distributed mounting holes are opened on the fixed pressure plate (3), and the mounting holes penetrate the elastic layer (32). A telescopic rod (35) is installed in the mounting hole, and the surface of the extended end of the telescopic rod (35) is flush with the surface of the elastic layer (32), and the telescopic length of the telescopic rod (35) is less than or equal to the elastic deformation amplitude of the elastic layer (32).

3. According to claim 2, a welding tool for manufacturing mechanical and electrical equipment, characterized in that: An elastic block (351) is installed on the extended end of the telescopic rod (35); the side of the elastic block (351) away from the telescopic rod (35) is flush with the surface of the elastic layer (32); the elastic block (351) and the elastic layer (32) are made of the same material; and anti-slip protrusions are provided on the surfaces of the elastic layer (32) and the elastic block (351).

4. The welding tool for manufacturing mechanical and electrical equipment according to claim 1, characterized in that: A synchronization ring (5) is installed on the outer side of the rotating disk (2), and the cross section of the synchronization ring (5) is L-shaped. A pull rope (44) is installed on the side of the slider (31) facing the synchronization ring (5), and the other end of the pull rope (44) passes through the slide groove (21) and is installed on the inner side of the synchronization ring (5). A second locking rod (51) is installed on the synchronization ring (5) through a thread, and the second locking rod (51) abuts against the outer side of the rotating disk (2).

5. A welding tool for manufacturing mechanical and electrical equipment according to claim 4, characterized in that: A mounting groove (331) is provided on the bottom surface of the slider (31), and the mounting groove (331) is located at one end of the slider (31) away from the synchronizing ring (5). A friction block (33) is hingedly installed in the mounting groove (331), and the end of the friction block (33) away from the synchronizing ring (5) is in a free state, and the friction block (33) is in contact with the bottom surface of the slide groove (21).

6. A welding tool for manufacturing mechanical and electrical equipment according to claim 5, characterized in that: The thickness of the end of the friction block (33) away from the synchronization ring (5) is greater than the thickness of the end of the friction block (33) close to the synchronization ring (5), and there is a gap between the friction block (33) and the bottom surface of the installation groove (331).

7. A welding tool for manufacturing mechanical and electrical equipment according to claim 4, characterized in that: One end of the slide groove (21) close to the synchronous ring (5) passes through the outer side surface of the turntable (2); one end of the slide groove (21) close to the synchronous ring (5) is installed with a stopper (4); a triangular elastic groove (41) is opened on the stopper (4); an extrusion block (42) is installed in the elastic groove (41); a locking screw (43) is installed on the stopper (4); the lower end of the locking screw (43) is rotatably connected to the extrusion block (42); two ends of the compression spring (34) are respectively connected to the stopper (4) and the slider (31); the pull rope (44) passes through a through hole on the stopper (4).

8. The welding tool for manufacturing mechanical and electrical equipment according to claim 1, characterized in that: The surface of the turntable (2) is provided with evenly distributed positioning holes (23), a limiting rod (231) is installed in the positioning hole (23), the workpiece is located in the area surrounded by the limiting rod (231), a magnetic block is installed on one end of the limiting rod (231) located in the positioning hole (23), and a sticky silicone layer is installed on the surface of the turntable (2).

Images