A seamless welding fixing device for plate

Abstract

The present application relates to plate welding equipment technical field, specifically to a kind of plate seamless welding fixing device;Including support, support top slidingly connected with carrier, multiple rollers are rotatably connected on carrier, lifting plate is slidingly connected on the both sides of support, and lifting plate is rotatably connected on the both ends of turnover frame, and lifting plate is fixedly connected with the drive motor for driving turnover frame rotation 180 °, lifting hydraulic cylinder is arranged between support and lifting plate;Effectively solve the problems that the existing plate welding fixing device is inconvenient to fix arc-shaped plate or cross-section wave-shaped plate, and inconvenient to turn over after completing front welding to weld back surface;The present application can effectively fix the plate to be welded, and can be conveniently aligned and turned over, greatly improving the welding efficiency of plate.

Description

Technical Field

[0001] This invention relates to the field of plate welding equipment technology, specifically to a seamless plate welding fixing device. Background Technology

[0002] Seamless welding, also known as gas shielded welding or gas electric welding, is based on the principle of using a specific heat source to melt the welding part of the plate while using gas as a protective medium to isolate the air and prevent the molten metal from being oxidized, thereby achieving a seamless connection of the plates.

[0003] In seamless welding operations, the positioning and clamping of the plates are crucial prerequisites for ensuring welding quality. If the two plates to be welded shift relative to each other during the welding process, it can easily lead to defects such as weld misalignment, uneven weld gaps, incomplete welds, or burn-through, severely affecting the strength and sealing of the weld joint, and even causing the workpiece to be scrapped. Therefore, before welding, the plates must be accurately positioned and reliably clamped using a specialized fixing device.

[0004] In actual production, seamless welding of curved or wavy-section plates is often required to adapt to the structural design of specific products. However, existing fixing devices exhibit significant compatibility defects when dealing with these irregularly shaped plates. Due to the uneven surface of curved or wavy plates, existing planar positioning-based fixing structures cannot achieve a complete fit with the surface of irregularly shaped plates. This not only makes reliable clamping difficult but may also cause surface damage due to excessive local pressure. Furthermore, after completing the front welding, the plate often needs to be flipped for back welding. However, most existing fixing devices are one-piece structures, resulting in poor overall stability of the plate in the clamped state. Loosening or displacement can easily occur during flipping, making repositioning difficult.

[0005] Therefore, the present invention provides a seamless welding and fixing device for sheet metal to solve the above problems. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention provides a seamless welding and fixing device for sheet metal, which effectively solves the problems that existing sheet metal welding and fixing devices are inconvenient for fixing curved sheet metal or sheet metal with a wavy cross section, and at the same time, it is inconvenient to flip the sheet metal after completing the front welding to weld the back side.

[0007] The solution to the technical problem of the present invention is as follows: A seamless welding and fixing device for plates includes a bracket, a support frame slidably connected above the bracket, a plurality of rollers rotatably connected to the support frame, a flipping frame slidably connected to the bracket, the flipping frame being located above the support frame, a flipping structure for driving the flipping frame to rotate 180° provided on the bracket, the flipping structure including lifting plates slidably connected to both sides of the bracket, the two ends of the flipping frame being rotatably connected to the two lifting plates respectively, and a drive motor for driving the flipping frame to rotate 180° fixedly connected to the lifting plates, and a lifting hydraulic cylinder provided between the bracket and the lifting plates;

[0008] The flipping frame is provided with a fixing structure for fixing the plate. The fixing structure includes two adjusting frames set on the flipping frame. Multiple rectangular fixing frames are fixedly connected to the adjusting frames. The upper and lower sides of the fixing frames are symmetrically provided with clamping devices.

[0009] The clamping device includes a sliding plate slidably connected to the fixed frame, a fixed hydraulic cylinder for pushing the sliding plate up and down is fixedly connected to the fixed frame, a lower pressure rod is slidably connected to the sliding plate, a lower pressure plate is provided at one end of the lower pressure rod that is close to each other, an adjusting spring is provided between the lower pressure rod and the sliding plate, and a positioning structure for fixing the lower pressure rod is provided inside the sliding plate.

[0010] Preferably, the positioning structure includes two positioning plates symmetrically slidably connected inside the sliding plate. The two sides of the pressing rod are provided with multiple vertically arranged limiting grooves. The two sides of the positioning plates that are close to each other are fixedly connected with multiple limiting blocks that cooperate with the limiting grooves. A reset spring is provided between the positioning plate and the sliding plate. The fixed frame is provided with a pushing structure for pushing the positioning plate to move.

[0011] Preferably, the pushing structure includes sliding grooves formed on the two inner sides of the fixed frame, a guide block with a triangular cross-section is fixedly connected to the side of the positioning plate near the sliding groove, and a pushing block that cooperates with the guide block is provided inside the sliding groove.

[0012] Preferably, the limiting block is configured as a spindle shape with pointed corners at both ends, and both ends of the limiting groove are provided with flared chamfers.

[0013] Preferably, the lower end of the pressure rod is provided with a U-shaped connector, the pressure plate is rotatably connected inside the connector, a friction plate is slidably connected inside the pressure plate, a compression spring is provided between the friction plate and the pressure plate, and a height fixing structure for fixing the height of the friction plate is provided inside the pressure plate.

[0014] Preferably, the height fixing structure includes two height fixing plates slidably connected between the two friction plates, and the two height fixing plates are symmetrically arranged. Multiple vertically arranged height fixing blocks are fixedly connected to both sides of each height fixing plate. Multiple height fixing grooves that cooperate with the height fixing blocks are opened on both sides of each friction plate. A tension spring is provided between the height fixing plate and the lower pressure plate. A control structure for controlling the movement of the height fixing plate is provided at the lower end of the lower pressure rod.

[0015] Preferably, the control structure includes a control groove formed at the lower end of the pressure rod, the connector is slidably connected to the inside of the control groove, the height fixing plates on the same side are connected by a connecting plate, a fixed push plate with a triangular cross section is fixedly connected to the connecting plate, and chamfers that cooperate with the fixed push plate are provided on both sides of the lower end of the pressure rod.

[0016] Preferably, a friction block is provided at the lower end of the friction plate, and the friction block is made of rubber.

[0017] Preferably, one of the adjusting frames is horizontally slidably connected to the tilting frame, and a horizontally pushing hydraulic cylinder for controlling the sliding of the adjusting frame is fixedly connected to the tilting frame;

[0018] Another adjustment frame is slidably connected to the flipping frame, and a threaded sleeve is fixedly connected to one side of the adjustment frame that is slidably connected to the flipping frame. A threaded shaft that is threadedly connected to the threaded sleeve is threadedly connected to the flipping frame.

[0019] Preferably, a limiting frame is fixedly connected to the middle position of the support frame, and multiple positioning plates are slidably connected inside the limiting frame. A telescopic hydraulic cylinder is provided between the positioning plates and the limiting frame.

[0020] The beneficial effects of this invention are as follows:

[0021] This invention addresses the problems of existing fixing structures failing to achieve full fit with the surface of irregularly shaped plates by adding a bracket, a support frame, rollers, a flipping frame, a lifting plate, a drive motor, a lifting hydraulic cylinder, an adjusting frame, a fixing frame, a sliding plate, a fixing hydraulic cylinder, a lowering rod, a lowering plate, and an adjusting spring. These problems include difficulty in achieving reliable clamping and fixing, potential damage to the plate surface due to excessive local pressure, and the fact that most existing fixing structures are integrated structures, resulting in poor overall stability of the plate in the clamped state, easy loosening or displacement during flipping, and significant difficulty in repositioning.

[0022] By adding connectors, friction plates, compression springs, height fixing plates, height fixing blocks, height fixing grooves, tension springs, control grooves, connecting plates, and fixing push plates, the lower pressure plate can better fit the curved surface of the sheet material, thereby improving the fixing effect.

[0023] By adding a horizontally driven hydraulic cylinder, a threaded sleeve, and a threaded shaft, the fixed plate material can be adjusted, thereby achieving precise alignment of the plate material's welding joints.

[0024] This invention is easy to use and can effectively fix the plates to be welded. It also makes it easy to align and flip them, greatly improving the welding efficiency of the plates. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall assembly of the present invention;

[0027] Figure 2 This is a schematic diagram of the usage state of the present invention;

[0028] Figure 3 This is a schematic diagram of the positioning card plate of the present invention in use;

[0029] Figure 4 This is a schematic diagram of the installation position of the push block in this invention;

[0030] Figure 5 This is the present invention. Figure 4 Enlarged view of a portion of point A in the middle;

[0031] Figure 6 This is a schematic diagram of the pressure bar of the present invention;

[0032] Figure 7 This is the present invention. Figure 6 Enlarged view of a portion of point B in the middle;

[0033] Figure 8 This is a schematic diagram of the installation position of the friction plate of the present invention;

[0034] Figure 9 This is a schematic diagram of the height-fixing plate of the present invention;

[0035] Figure 10 This is a schematic diagram of one usage state of the pressure plate of the present invention;

[0036] Figure 11This is a schematic diagram of another usage state of the pressure plate of the present invention;

[0037] Figure 12 This is a schematic diagram of the adjustment frame of the present invention;

[0038] Figure 13 This is a cross-sectional schematic diagram of the limiting frame of the present invention.

[0039] In the diagram, 1. Bracket; 2. Bearing frame; 3. Roller; 4. Tilting frame; 5. Lifting plate; 6. Lifting hydraulic cylinder; 7. Adjusting frame; 8. Fixing frame; 9. Sliding plate; 10. Fixing hydraulic cylinder; 11. Pressing rod; 12. Pressing plate; 13. Adjusting spring; 14. Positioning plate; 15. Limiting groove; 16. Return spring; 17. Sliding groove; 18. Guide block; 19. Pushing block; 20. Connecting piece; 21. Friction plate; 22. Compression spring; 23. Height fixing plate; 24. Height fixing block; 25. Height fixing groove; 26. Tension spring; 27. Control groove; 28. Connecting plate; 29. ​​Fixing push plate; 30. Friction block; 31. Horizontal pushing hydraulic cylinder; 32. Threaded sleeve; 33. Threaded shaft; 34. Limiting frame; 35. Positioning clamping plate; 36. Telescopic hydraulic cylinder; 37. Limiting block; 38. Locking spring. Detailed Implementation

[0040] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0041] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0042] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this invention, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0043] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the shape, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0044] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0045] Example 1, refer to the appendix of the instruction manual. Figure 1-13 A seamless welding and fixing device for sheet metal includes a support 1, a support frame 2 slidably connected above the support 1, a supporting hydraulic cylinder between the support 1 and the support frame 2, and the lifting and lowering of the support frame 2 controlled by the supporting hydraulic cylinder during use. Multiple rollers 3 are rotatably connected to the support frame 2. During use, the sheet metal to be welded is placed on the rollers 3, and the position of the sheet metal can be easily adjusted under the action of the rollers 3. A flipping frame 4 is slidably connected to the support 1 and is located above the support frame 2. A flipping structure for driving the flipping frame 4 to rotate 180° is provided on the support 1. The flipping structure includes lifting plates 5 slidably connected to both sides of the support 1. The two ends of the flipping frame 4 are rotatably connected to the two lifting plates 5 respectively, and a drive motor for driving the flipping frame 4 to rotate 180° is fixedly connected to the lifting plates 5. A lifting hydraulic cylinder 6 is provided between the support 1 and the lifting plates 5.

[0046] The flipping frame 4 is provided with a fixing structure for fixing the plate. The fixing structure includes two adjusting frames 7 set on the flipping frame 4. Multiple rectangular fixing frames 8 are fixedly connected to the adjusting frames 7. The upper and lower sides of the fixing frames 8 are symmetrically provided with clamping devices.

[0047] The clamping device includes a sliding plate 9 slidably connected to a fixed frame 8. A fixed hydraulic cylinder 10 for pushing the sliding plate 9 up and down is fixedly connected to the fixed frame 8. A lower pressure rod 11 is slidably connected to the sliding plate 9. A lower pressure plate 12 is provided at one end of the lower pressure rod 11 that is close to each other. An adjusting spring 13 is provided between the lower pressure rod 11 and the sliding plate 9. In the initial state, the adjusting spring 13 pushes the lower pressure rod 11 in the direction that they are close to each other. The two sliding plates 9 inside the fixed frame 8 are located at the farthest position away from the adjusting frame 7. At this time, the plate can be placed between the two lower pressure rods 11.

[0048] The sliding plate 9 has a positioning structure inside for fixing the pressure rod 11;

[0049] The positioning structure includes two symmetrically slidably connected positioning plates 14 inside the sliding plate 9. The two sides of the pressing rod 11 are provided with multiple vertically arranged limiting grooves 15. On the side of the two positioning plates 14 that are close to each other, multiple limiting blocks 37 that cooperate with the limiting grooves 15 are fixedly connected. A return spring 16 is provided between the positioning plate 14 and the sliding plate 9. In the initial state, under the action of the return spring 16, the limiting blocks 37 are pushed to separate from the limiting grooves 15. At this time, the pressing rod 11 can slide up and down normally. The fixed frame 8 is provided with a pushing structure for pushing the positioning plate 14 to move.

[0050] The pushing structure includes sliding grooves 17 formed on the two inner sides of the fixed frame 8. A guide block 18 with a triangular cross section is fixedly connected to the side of the positioning plate 14 near the sliding groove 17. A pushing block 19 that cooperates with the guide block 18 is provided inside the sliding groove 17.

[0051] In use, the plate is placed on the support frame 2 and passes between the upper and lower pressure rods 11. Under the action of the roller 3, the plate is pushed to the predetermined position. Then, the fixed hydraulic cylinder 10 pushes the sliding plate 9 to move closer to the plate. When a part of the pressure plate 12 contacts the highest point of the arc surface of the plate, the sliding plate 9 continues to move. At this time, the pressure rods 11 can move closer to the sliding plate 9, compressing the adjusting spring 13. Until the remaining pressure rods 11 contact the lowest point of the plate, the sliding plate 9 continues to move a certain distance, compressing the adjusting spring 13. The plate is initially fixed by adjusting the pressure of the spring 13.

[0052] When the sliding plate 9 moves closer to the plate, it simultaneously drives the positioning plate 14 to slide synchronously until the guide block 18 and the push block 19 come into contact. At this time, the sliding plate 9 continues to slide closer to the plate. Under the action of the inclined surface of the push block 19 and the inclined surface of the guide block 18, the positioning plate 14 is pushed to move away from the sliding groove 17. At this time, the limiting block 37 is inserted into the limiting groove 15, and the pressing rod 11 is fixed in the current position. This position is set to facilitate the fixing of the pressing plate 12, thereby improving the fixing effect. After the pressing rod 11 is fixed, the fixing hydraulic cylinder 10 applies a certain pressure to the sliding plate 9 and then stops, thereby fixing the plate to be welded.

[0053] When it is necessary to flip the plate, the lifting hydraulic cylinder 6 lifts the flipping frame 4 upward, and the support hydraulic cylinder controls the carrier frame 2 to move downward, thereby providing sufficient flipping space. Then, the drive motor rotates the flipping frame 4 180°, thereby flipping the plate to be welded. After flipping, the carrier frame 2 is raised to the initial position, and the flipping frame 4 moves downward until it is in contact with the top surface of the carrier frame 2.

[0054] The limiting block 37 is set as a spindle shape with pointed corners at both ends, and the limiting groove 15 has a flared chamfer at both ends. This setting makes it easier for the limiting block 37 to be inserted into the limiting groove 15.

[0055] In the second embodiment, a U-shaped connector 20 is provided at the lower end of the pressure rod 11. The pressure plate 12 is rotatably connected inside the connector 20. A friction plate 21 is slidably connected inside the pressure plate 12. A compression spring 22 is provided between the friction plate 21 and the pressure plate 12. In the initial state, the friction plate 21 is pushed to move closer to the plate under the action of the compression spring 22. The pressure plate 12 is provided with a height fixing structure for fixing the height of the friction plate 21.

[0056] The height fixing structure includes two height fixing plates 23 slidably connected between two friction plates 21, and the two height fixing plates 23 are symmetrically arranged. Multiple vertically arranged height fixing blocks 24 are fixedly connected to both sides of the height fixing plates 23. The two ends of the height fixing blocks 24 are set as sharp corners. Multiple height fixing grooves 25 that cooperate with the height fixing blocks 24 are opened on both sides of the friction plates 21. A tension spring 26 is provided between the height fixing plates 23 and the lower pressure plate 12. In the initial state, the height fixing plates 23 are pushed to move closer to the connector 20 under the action of the tension spring 26. At this time, the height fixing blocks 24 and the height fixing grooves 25 are disengaged. The lower end of the lower pressure rod 11 is provided with a control structure for controlling the movement of the height fixing plates 23.

[0057] The control structure includes a control groove 27 at the lower end of the pressure rod 11, a connector 20 that slides up and down inside the control groove 27, and height fixing plates 23 on the same side connected by a connecting plate 28. A fixed push plate 29 with a triangular cross section is fixedly connected to the connecting plate 28. Both sides of the lower end of the pressure rod 11 are provided with chamfers that cooperate with the fixed push plate 29.

[0058] In use, push the sliding plate 9 to move closer to the plate. After the pressure plate 12 contacts the highest point of the curved plate, the friction plate 21 moves closer to the pressure rod 11, compressing the spring 22, so that all the friction plates 21 are in contact with the curved surface of the plate. Then, the sliding plate 9 continues to move closer to the plate. At this time, the connecting piece 20 moves closer to the pressure rod 11 until the lower end of the pressure rod 11 contacts the fixed push plate 29. Then, push the connecting plate 28 away from the connecting piece 20. When the connecting plate 28 moves away from the connecting piece 20, it drives the height fixing plate 23 to move synchronously. At this time, the height fixing block 24 is inserted into the height fixing groove 25, thereby fixing the friction plate 21 and improving the stability of fixing the plate. Refer to the attached instruction manual. Figure 10 .

[0059] When the lower pressure plate 12 contacts the inclined surface of the curved plate, the lower pressure plate 12 rotates at a certain angle to fit against the inclined surface of the plate. At this time, the friction plate 21 contacts the inclined surface of the plate and moves towards the lower pressure rod 11, compressing the spring 22. This ensures that all friction plates 21 are in contact with the inclined surface of the plate. Subsequently, by controlling the synchronous movement of the height fixing plate 23, the height fixing block 24 is inserted into the height fixing groove 25, thereby fixing the friction plates 21 and improving the stability of the plate. (Refer to the attached instruction manual.) Figure 11 .

[0060] A friction block 30 is provided at the lower end of the friction plate 21. The friction block 30 is made of rubber material, which is used to increase the friction force and prevent the friction plate 21 from damaging the plate.

[0061] In embodiment three, one of the adjustment frames 7 is horizontally slidably connected to the flip frame 4. The flip frame 4 is fixedly connected to a horizontally pushing hydraulic cylinder 31 for controlling the sliding of the adjustment frame 7. The flip frame 4 is provided with a slide rail. The adjustment frame 7 is provided with sliders on both sides that are slidably connected to the slide rail. In use, the horizontally pushing hydraulic cylinder 31 pushes the adjustment frame 7 to slide towards or towards another adjustment frame 7, thereby facilitating the control of the position of the plate fixed on the adjustment frame 7 and facilitating the welding of the two plates.

[0062] Another adjusting frame 7 is slidably connected to the flipping frame 4. A threaded sleeve 32 is fixedly connected to one side of the adjusting frame 7, which is slidably connected to the flipping frame 4. A threaded shaft 33 is threadedly connected to the flipping frame 4 and threadedly connected to the threaded sleeve 32. Limiting shafts are provided on both sides of the adjusting frame 7. Limiting holes that cooperate with the limiting shafts are opened on the flipping frame 4. By rotating the threaded shaft 33, the rotating threaded shaft 33 rotates inside the threaded sleeve 32 to adjust the front and rear position of the adjusting frame 7. This is used to adjust the front and rear position of the plate fixed on the adjusting frame 7. The adjusting frame 7 slides back and forth on the flipping frame 4 through the limiting shaft and the limiting hole, which facilitates the adjustment of the plate position.

[0063] The position of the two plates is adjusted by moving the adjustment bracket 7, which facilitates the connection of the two plates that need to be welded.

[0064] In embodiment four, a limiting frame 34 is fixedly connected to the middle position of the support frame 2. Multiple positioning plates 35 are slidably connected inside the limiting frame 34. A telescopic hydraulic cylinder 36 is provided between the positioning plates 35 and the limiting frame 34.

[0065] In the initial state, the positioning plate 35 is pushed upward to the limit position by the telescopic hydraulic cylinder 36. At this time, the plate is pushed to move closer to the positioning plate 35 until one end of the plate contacts the positioning plate 35. Then, the position of the plate on the adjusting frame 7 is adjusted by the horizontally pushing hydraulic cylinder 31 until the two plates are close to each other.

[0066] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A seamless welding and fixing device for sheet metal, comprising a bracket (1), characterized in that, A support frame (2) is slidably connected above the support (1). Multiple rollers (3) are rotatably connected to the support frame (2). A flipping frame (4) is slidably connected to the support (1). The flipping frame (4) is located above the support frame (2). A flipping structure for driving the flipping frame (4) to rotate 180° is provided on the support (1). The flipping structure includes lifting plates (5) slidably connected to both sides of the support (1). The two ends of the flipping frame (4) are rotatably connected to the two lifting plates (5). A drive motor for driving the flipping frame (4) to rotate 180° is fixedly connected to the lifting plates (5). A lifting hydraulic cylinder (6) is provided between the support (1) and the lifting plates (5). The flipping frame (4) is provided with a fixing structure for fixing the plate. The fixing structure includes two adjusting frames (7) set on the flipping frame (4). Multiple rectangular fixing frames (8) are fixedly connected to the adjusting frames (7). The upper and lower sides of the fixing frames (8) are symmetrically provided with pressing devices. The clamping device includes a sliding plate (9) slidably connected to the fixed frame (8), a fixed hydraulic cylinder (10) for pushing the sliding plate (9) to slide up and down is fixedly connected to the fixed frame (8), a plurality of downward pressure rods (11) are slidably connected to the sliding plate (9), a downward pressure plate (12) is provided at one end of the downward pressure rods (11) that are close to each other, an adjusting spring (13) is provided between the downward pressure rods (11) and the sliding plate (9), and a positioning structure for fixing the downward pressure rods (11) is provided inside the sliding plate (9); The lower end of the pressure rod (11) is provided with a U-shaped connector (20), the pressure plate (12) is rotatably connected inside the connector (20), the pressure plate (12) is slidably connected inside the pressure plate (12), a compression spring (22) is provided between the friction plate (21) and the pressure plate (12), and the pressure plate (12) is provided with a height fixing structure for fixing the height of the friction plate (21). The height fixing structure includes two height fixing plates (23) that are slidably connected between the two friction plates (21), and the two height fixing plates (23) are symmetrically arranged. Multiple vertically arranged height fixing blocks (24) are fixedly connected to both sides of the height fixing plate (23). Multiple height fixing grooves (25) that cooperate with the height fixing blocks (24) are opened on both sides of the friction plate (21). A tension spring (26) is provided between the height fixing plate (23) and the lower pressure plate (12). A control structure for controlling the movement of the height fixing plate (23) is provided at the lower end of the lower pressure rod (11).

2. The seamless welding and fixing device for plates according to claim 1, characterized in that, The positioning structure includes two symmetrically slidingly connected positioning plates (14) inside the sliding plate (9). The two sides of the pressing rod (11) are provided with multiple vertically arranged limiting grooves (15). The two sides of the positioning plates (14) that are close to each other are fixedly connected with multiple limiting blocks (37) that cooperate with the limiting grooves (15). A reset spring (16) is provided between the positioning plate (14) and the sliding plate (9). The fixed frame (8) is provided with a pushing structure for pushing the positioning plate (14) to move.

3. The seamless welding and fixing device for plates according to claim 2, characterized in that, The pushing structure includes sliding grooves (17) formed on the two inner sides of the fixed frame (8). A guide block (18) with a triangular cross section is fixedly connected to the side of the positioning plate (14) near the sliding groove (17). A pushing block (19) that cooperates with the guide block (18) is provided inside the sliding groove (17).

4. The seamless welding and fixing device for plates according to claim 2, characterized in that, The limiting block (37) is set as a spindle shape with sharp corners at both ends, and the limiting groove (15) has a flared chamfer at both ends.

5. The seamless welding and fixing device for plates according to claim 1, characterized in that, The control structure includes a control groove (27) opened at the lower end of the pressure rod (11), the connector (20) is slidably connected to the inside of the control groove (27), a locking spring (38) is installed between the connector (20) and the pressure rod (11), and the elastic force of the locking spring (38) is greater than the elastic force of the compression spring (22). The height fixing plates (23) on the same side are connected by a connecting plate (28), and a fixed push plate (29) with a triangular cross section is fixedly connected to the connecting plate (28). Both sides of the lower end of the pressure rod (11) are provided with chamfers that cooperate with the fixed push plate (29).

6. The seamless welding and fixing device for plates according to claim 1, characterized in that, A friction block (30) is provided at the lower end of the friction plate (21), and the friction block (30) is made of rubber.

7. The seamless welding and fixing device for plates according to claim 1, characterized in that, One of the adjustment frames (7) is horizontally slidably connected to the tilting frame (4), and a horizontally pushing hydraulic cylinder (31) for controlling the sliding of the adjustment frame (7) is fixedly connected to the tilting frame (4). Another adjustment frame (7) is slidably connected to the flip frame (4) and a threaded sleeve (32) is fixedly connected to one side of the adjustment frame (7) which is slidably connected to the flip frame (4). A threaded shaft (33) that is threadedly connected to the threaded sleeve (32) is threadedly connected to the flip frame (4).

8. The seamless welding and fixing device for plates according to claim 1, characterized in that, The support frame (2) is fixedly connected to the middle position of the limiting frame (34). Multiple positioning plates (35) are slidably connected inside the limiting frame (34). A telescopic hydraulic cylinder (36) is provided between the positioning plates (35) and the limiting frame (34).

Images