Automatic hoop welding processing equipment

Abstract

The present application relates to automatic or semi-automatic electric arc welding equipment manufacturing technical field, especially relates to a kind of automatic welding processing equipment of hoop, including rack, positioning table, radial support slider, conversion sleeve, ear plate pair of clamp assembly and welding torch.Conversion sleeve is equipped with fixed conical surface and fixed diameter retaining surface in turn along the direction of movement of work, and is equipped with stage guide groove accommodating two follow-up rollers respectively.When conversion sleeve moves axially, fixed conical surface first pushes radial support slider to abut the inner periphery of the hoop to be welded;After radial support slider enters fixed diameter retaining state, stage guide groove drives two clamping slides to press the corresponding hoop end, so that hoop completes connection ear plate clamping while keeping fixed circle position, and welding is carried out along the connecting edge by welding torch.

Description

Technical Field

[0001] This invention relates to the field of manufacturing technology of automatic or semi-automatic arc welding equipment, and in particular to an automated welding processing equipment for clamps. Background Technology

[0002] Clamps are typically made by bending strips of metal into an arc shape, with connecting lugs welded to both sides of the opening for tightening using fasteners. In current manufacturing processes, the clamps are often positioned by a fixed mandrel, separate support blocks, or external clamps, while the connecting lugs are pressed against the ends of the clamps by manual clamps or two sets of independent actuators, and then welded along the connecting edges using a welding torch.

[0003] After the hoop is bent, its roundness, opening width, and the position of its two ends are prone to deviation. If the connecting lugs are tightened first, the clamping load may cause the thin-walled hoop near the opening to deform inward; if the hoop is expanded after the lugs are clamped, relative movement may occur between the hoop ends and the connecting lugs. When using independent actuators to complete the rounding and lug clamping separately, it is necessary to adjust the timing of multiple actions. When there is a deviation in the clamping action on both sides, the contact state of the two connecting edges will also be different. If a conventional rigid expansion structure continues to be driven after reaching the set diameter, it may still apply an expansion force to the hoop, causing the rounding load and the lug clamping load to affect each other. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problems by providing an automated welding equipment for clamps.

[0005] The technical solution of the present invention is an automated welding processing equipment for clamps, comprising a frame, a positioning table on the frame, radial guide grooves distributed along the inner circumference of the clamp to be welded on the positioning table, and radial support sliders slidably disposed in each of the radial guide grooves; a conversion sleeve slidably disposed axially in the center of the positioning table, the outer circumference of the conversion sleeve being provided with a fixed conical surface and a sizing retaining surface connected to the large diameter end of the fixed conical surface in sequence along its working moving direction, the fixed conical surface abutting against the inner end of each of the radial support sliders, the conversion sleeve being connected to an axial driving component; ear plate clamping assemblies are provided on both sides of the opening of the clamp to be welded, the ear plate clamping assemblies including a first clamping slide, a second clamping slide, and respectively The first and second follower rollers are disposed on both. The conversion sleeve is provided with a first-stage guide groove and a second-stage guide groove to accommodate the first and second follower rollers respectively. Both stage guide grooves are formed by connecting an axial guide section corresponding to the fixed-circular conical surface and an oblique clamping section corresponding to the fixed-sizing retaining surface. When the conversion sleeve moves axially, it first drives the radial support slider to abut against the inner circumference of the welding clamp, then maintains the radial position of the radial support slider and drives the first clamping slide and the second clamping slide to press against the corresponding clamp ends respectively. The frame is provided with a welding gun holder, and the welding gun holder is provided with a welding gun that moves along the connection edge between the ear plate and the clamp.

[0006] In one embodiment, the axial guide sections of the first stage guide groove and the second stage guide groove extend parallel to the axis of the conversion sleeve. The oblique clamping sections of the two are mirror images of the center surface of the clamp to be welded. The connection position of the axial guide section and the oblique clamping section corresponds to the axial connection area of ​​the fixed circle cone surface and the fixed diameter holding surface. When the first follower roller and the second follower roller enter the corresponding oblique clamping section, the radial support sliders are held in a radial position by the fixed diameter holding surface.

[0007] In one embodiment, each radial support slider has a bearing roller rotatably mounted on its inner end. The bearing roller makes rolling contact with the fixed-circular conical surface and the fixed-diameter retaining surface in sequence. The outer end of each radial support slider forms an arc-shaped support surface that is adapted to the inner circumference of the clamp to be welded. The radial support sliders corresponding to the ends of the two clamps extend to the inner side of the corresponding clamp ends to receive the force transmitted from the clamp ends when the ear plate is clamped.

[0008] In one embodiment, the first clamping slide is provided with a first ear plate positioning groove, and the second clamping slide is provided with a second ear plate positioning groove. The first ear plate positioning groove and the second ear plate positioning groove respectively have a supporting surface for supporting the bottom edge of the connecting ear plate and a positioning surface for limiting the lateral position of the connecting ear plate. The openings of the two ear plate positioning grooves face the corresponding end of the hoop, so that after the connecting ear plate is clamped, its connecting edge with the hoop is exposed in the movement path of the welding torch.

[0009] In one embodiment, the radial support sliders corresponding to the ends of the two clamping bands are respectively arranged opposite to the first clamping slide and the second clamping slide along the clamping direction of the ear plate.

[0010] In one embodiment, the welding torch holder is provided with a welding guide rail extending along the connecting edge of the ear plate and the hoop, and a welding screw parallel to the welding guide rail. The welding torch is mounted on a welding torch slide, the welding torch slide is slidably connected to the welding guide rail and threadedly engaged with the welding screw, and the welding screw is driven by a drive motor to drive the welding torch to move continuously along the connecting edge.

[0011] In one embodiment, the frame is also provided with a transverse guide rail that spans the opening area of ​​the clamp to be welded. The welding gun holder is fixed to the transverse base, and the transverse base is slidably connected to the transverse guide rail. The extension direction of the transverse guide rail spans the ends of the two clamps, so that the welding gun holder can move between the welding position of the first connecting ear plate and the welding position of the second connecting ear plate, and the welding of the two connecting edges is completed sequentially by the same welding gun.

[0012] In one embodiment, the positioning platform is provided with a positioning detection element corresponding to the clamping endpoint of the first clamping slide and the second clamping slide. The positioning detection element is signal-connected to the controller. The controller is controlled and connected to the axial drive and the drive motor respectively. After detecting that the first clamping slide and the second clamping slide have reached the ear plate pressing position, the controller controls the drive motor to drive the welding gun slide to perform welding feed.

[0013] In one embodiment, the axial drive component is a servo electric cylinder, the output end of which is coaxially connected to the conversion sleeve to drive the conversion sleeve to move continuously axially along the fixed circle stage and the ear plate clamping stage.

[0014] In one embodiment, the welding torch is connected to a welding power source, which is an automatic or semi-automatic electric arc welding power source or a plasma arc welding power source.

[0015] The advantages of this invention compared to the prior art are that, when the conversion sleeve moves axially, the fixed-circle conical surface first pushes each radial support slider to move outward along the radial guide groove, and the first and second follower rollers move along the corresponding axial guide sections, so that the first and second clamping slides do not generate clamping displacement toward the end of the hoop; when the radial support slider transitions from the fixed-circle conical surface to the fixed-diameter holding surface, its radial position remains unchanged, and the two follower rollers enter the corresponding oblique clamping sections and drive the two clamping slides to press against the corresponding end of the hoop. Thus, the fixed-circle clamping of the hoop and the ear plate clamping can be completed sequentially from the same axial input, and the hoop diameter does not continue to expand during the ear plate clamping process, reducing the possibility of mutual interference between the two processing stages. Attached Figure Description

[0016] Figure 1 A schematic diagram of the first overall structure of the automated welding equipment for clamps provided in an embodiment of the present invention;

[0017] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0018] Figure 3 A schematic diagram of the second overall structure of the automated welding equipment for clamps provided in an embodiment of the present invention;

[0019] Figure 4 An exploded view of the conversion sleeve, radial support slider, and ear plate clamping assembly provided for an embodiment of the present invention;

[0020] Figure 5 A side structural schematic diagram of the automated welding equipment for clamps provided in an embodiment of the present invention;

[0021] Figure 6 A partial structural schematic diagram of the welding torch feed structure and ear plate clamping assembly provided in an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the assembly structure of the radial support slider, the ear plate clamping assembly, and the welding torch feed structure provided in the embodiments of the present invention.

[0023] In the diagram: 1. Frame; 2. Positioning table; 3. Radial guide groove; 4. Radial support slider; 5. Converter sleeve; 6. Fixed circle conical surface; 7. Fixed diameter retaining surface; 8. Axial drive component; 9. Ear plate clamping assembly; 91. First clamping slide; 92. Second clamping slide; 93. First follower roller; 94. Second follower roller; 10. First stage guide groove; 11. Second stage guide groove; 12. Welding torch holder; 13. Welding torch; 14. Pressure bearing roller; 15. First ear plate positioning groove; 16. Second ear plate positioning groove; 17. Welding guide rail; 18. Welding screw; 19. Welding torch slide; 20. Drive motor; 21. Transverse guide rail; 22. Transverse seat; 23. Position detection component; 24. Controller; 25. Welding power supply. Detailed Implementation

[0024] The above and other embodiments and advantages of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] In one implementation, such as Figures 1 to 7As shown. The automated welding equipment for clamps includes a frame 1, on which a positioning table 2 is provided. Radial guide grooves 3 are distributed along the inner circumference of the clamp to be welded on the positioning table 2, and radial support sliders 4 are slidably provided in each radial guide groove 3. A conversion sleeve 5 is axially slidably provided in the middle of the positioning table 2. A fixed conical surface 6 and a sizing retaining surface 7 that connects to the large diameter end of the fixed conical surface 6 are sequentially provided on the outer circumference of the conversion sleeve 5 along its working direction. The fixed conical surface 6 abuts against the inner end of each radial support slider 4. The conversion sleeve 5 is connected to an axial drive component 8. Ear plate clamping assemblies 9 are provided on both sides of the opening of the clamp to be welded. The ear plate clamping assembly 9 includes a first clamping slide 91, a second clamping slide 92, and a first follower respectively disposed on the two. The first stage guide groove 10 and the second stage guide groove 11 are provided on the conversion sleeve 5 to accommodate the first stage guide roller 93 and the second stage guide roller 94 respectively. Both stage guide grooves are formed by connecting the axial guide section corresponding to the fixed conical surface 6 and the oblique clamping section corresponding to the fixed diameter holding surface 7. When the conversion sleeve 5 moves axially, it first drives the radial support slider 4 to abut against the inner circumference of the welding clamp, and then maintains the radial position of the radial support slider 4 and drives the first clamping slide 91 and the second clamping slide 92 to press against the corresponding end of the clamp. The frame 1 is provided with a welding gun holder 12, and the welding gun holder 12 is provided with a welding gun 13 that moves along the connection edge between the ear plate and the clamp.

[0026] In this embodiment, the frame 1 provides a supporting base for the positioning table 2, the welding torch holder 12, and other moving parts. The positioning table 2 is located below the welding clamp, which is sleeved around the periphery of multiple radial support sliders 4, with its central axis substantially coinciding with the axis of the conversion sleeve 5. Each radial guide groove 3 extends outward from the center of the positioning table 2, radially guiding the corresponding radial support slider 4 so that the multiple radial support sliders 4 can only approach or move away from the inner circumference of the welding clamp along their respective radial directions. The opening of the welding clamp is located on the side where the ear plate clamping assembly 9 is located, and the first clamping slide 91 and the second clamping slide 92 correspond to one end of the clamp band, respectively. The conversion sleeve 5 can be a sleeve-shaped component with a mounting hole in the middle. The fixed circular conical surface 6 is provided at the front section of the outer circumference of the conversion sleeve 5, and its radial dimension gradually increases along the working movement direction of the conversion sleeve 5; the fixed diameter retaining surface 7 is connected to the large diameter end of the fixed circular conical surface 6, and its radial dimension remains unchanged at each position along the axial direction. The first-stage guide groove 10 and the second-stage guide groove 11 are respectively located at positions corresponding to the first follower roller 93 and the second follower roller 94 of the conversion sleeve 5. The axial guide section of each stage guide groove extends along the axis of the conversion sleeve 5, and the oblique clamping section extends at an inclination relative to the axis of the conversion sleeve 5. The inclination directions of the two oblique clamping sections correspond to the clamping directions of the first clamping slide 91 and the second clamping slide 92, respectively. The first clamping slide 91 and the second clamping slide 92 are slidably mounted via T-shaped linear guide grooves on the positioning table 2. The lower part of each clamping slide is provided with a guide portion that slides in cooperation with the T-shaped linear guide groove, allowing it to move only along the clamping direction of the ear plate. A clamping return spring is provided between each clamping slide and the positioning table 2, applying an elastic force away from the end of the clamping band to the corresponding clamping slide. The first-stage guide groove 10 and the second-stage guide groove 11 are both U-shaped grooves with openings facing the corresponding follower rollers, and the groove width is slightly larger than the thickness of the follower rollers. The first follower roller 93 and the second follower roller 94 are respectively rotatably sleeved on the corresponding roller shafts, and the two ends of the roller shafts are axially limited by the shaft shoulders and retaining rings. A radial return spring is provided inside each radial guide groove 3 on the outside of the radial support slider 4, and the radial return spring applies an elastic force toward the conversion sleeve 5 to the corresponding radial support slider 4.

[0027] Before loading, the conversion sleeve 5 is in its initial position, and each radial support slider 4 is in a retracted position allowing the clamp to be welded to be fitted. The first clamping slide 91 and the second clamping slide 92 are spaced apart from the corresponding clamp ends, and the first follower roller 93 and the second follower roller 94 are located in the corresponding axial guide sections. A pair of circumferential positioning blocks are provided on both sides of the opening of the clamp to be welded on the positioning table 2. The circumferential positioning blocks are not shown in the attached drawings. The two circumferential positioning blocks are located circumferentially outside the ends of the two clamps and avoid the movement paths of the two clamping slides. At least one circumferential positioning block can be adjusted along the circumferential direction of the clamp to be welded. During loading, the clamp to be welded is fitted onto the outside of the radial support slider 4, so that the circumferential end faces of the two clamp ends are respectively against the corresponding circumferential positioning blocks. Then, the two connecting ear plates are placed in the bearing positions of the first clamping slide 91 and the second clamping slide 92, respectively. A radial gap is left between the circumferential positioning block and the outer periphery of the clamp to be welded, thus only limiting the opening orientation of the clamp to be welded, without hindering the radial support slider 4 from internally supporting and fixing the clamp to be welded.

[0028] When the axial drive component 8 begins to drive the conversion sleeve 5 to move along the working direction, the fixed circular cone surface 6 gradually applies radial force to the inner ends of each radial support slider 4. Each radial support slider 4 is constrained by the radial guide groove 3 and cannot move axially with the conversion sleeve 5. Therefore, it moves outward along the radial guide groove 3 and forms supports at multiple circumferential positions on the inner circumference of the clamp to be welded. As the radial dimension of the fixed circular cone surface 6 increases, the outer ends of each radial support slider 4 gradually approach the inner circumference of the clamp to be welded, thus constraining the local roundness deviation that exists after bending.

[0029] During this stage, the first follower roller 93 and the second follower roller 94 only move relative to each other along their respective axial guide sections. The axial guide sections do not have a lateral component that changes the position of the follower rollers in the clamping direction, so the first clamping slide 91 and the second clamping slide 92 remain in the retracted state, and the connecting ear plate will not press against the end of the clamp before the clamp completes its internal support.

[0030] After each radial support slider 4 moves to the set fixed circle position, the inner end of the radial support slider 4 transitions from the fixed circle conical surface 6 to the fixed sizing retaining surface 7. Since the radial dimension of the fixed sizing retaining surface 7 along the working movement direction of the conversion sleeve 5 no longer changes, the subsequent axial movement of the conversion sleeve 5 will not continue to increase the outward movement of the radial support slider 4, and the clamp to be welded is thus held in the established fixed circle position. Corresponding to this transition process, the first follower roller 93 and the second follower roller 94 respectively enter the oblique clamping section from the axial guide section. When the conversion sleeve 5 continues to move axially, the position change of the oblique clamping section relative to the axis of the conversion sleeve 5 acts on the corresponding follower roller, causing the first clamping slide 91 and the second clamping slide 92 to move toward the corresponding clamp end, respectively.

[0031] In the above structure, the fixed circle and ear plate clamping are not composed of two unrelated actions. During the initial stroke of the same conversion sleeve 5, the axial input is converted into the radial outward movement of multiple radial support sliders 4 via the fixed circle conical surface 6. The axial guiding section of the stage guide groove does not output clamping displacement during this stroke. After the conversion sleeve 5 enters the later stroke, the sizing retaining surface 7 stops the radial support sliders 4 from further outward movement, and only then does the oblique clamping section convert the remaining axial input into the clamping displacement of the two clamping slides. Although the conversion sleeve 5 moves continuously, the action on the clamping band sequentially changes from the expanded fixed circle to the ear plate clamping under sizing support conditions, reducing the possibility of continued expansion of the band during ear plate clamping or premature clamping of the ear plate before the band has reached a fixed circle. After the first clamping slide 91 and the second clamping slide 92 clamp the connecting ear plate, the connecting ear plate abuts against the corresponding end of the band. The radial support slider 4, located near the opening, receives the clamping load from the inner side of the hoop end. This force is transmitted from the clamping slide block through the connecting ear plate and the hoop end to the corresponding radial support slider 4, and then received by the radial guide groove 3 and the positioning table 2. This force path is concentrated near the hoop opening, reducing the possibility of deformation in other parts caused by the outer clamping force being transmitted throughout the hoop. After the connecting ear plate is clamped, the welding torch 13 is supported by the welding torch holder 12 and moves along the connecting edge between the connecting ear plate and the hoop end to complete the corresponding weld. After welding, the welding torch 13 exits the welding position, and the axial drive 8 drives the conversion sleeve 5 to move in the opposite direction. The first follower roller 93 and the second follower roller 94 return along the corresponding stage guide groove. The first clamping slide 91 and the second clamping slide 92 move away from the end of the hoop under the action of the clamping return spring to release the pressure on the connecting ear plate. When the conversion sleeve 5 continues to return, each radial support slider 4 retracts inward along the radial guide groove 3 under the action of the radial return spring until it separates from the inner circumference of the hoop to be welded. Then the welded hoop is taken out.

[0032] In one embodiment, the axial guide sections of the first stage guide groove 10 and the second stage guide groove 11 extend parallel to the axis of the conversion sleeve 5. The oblique clamping sections of the two are mirror images of the center surface of the clamp to be welded. The connection position of the axial guide section and the oblique clamping section corresponds to the axial connection area of ​​the fixed circle cone surface 6 and the fixed diameter holding surface 7. When the first follower roller 93 and the second follower roller 94 enter the corresponding oblique clamping section, each radial support slider 4 is held in a radial position by the fixed diameter holding surface 7.

[0033] In this embodiment, the two axial guide sections allow the first follower roller 93 and the second follower roller 94 to move relative to each other along the axial direction of the conversion sleeve 5, respectively. During this process, the two clamping slides do not generate clamping displacement toward the end of the band. The two oblique clamping sections are arranged in mirror image, so that after the conversion sleeve 5 enters the later stroke, the first follower roller 93 and the second follower roller 94 are subjected to lateral forces in opposite directions, thereby causing the two clamping slides to approach the corresponding ends of the band from both sides of the opening. The groove connection position corresponds to the connection area of ​​the fixed conical surface 6 and the fixed diameter holding surface 7, so that the moment when the radial support slider 4 stops moving outward and the moment when the two clamping slides begin to clamp are determined by the fixed geometric position on the conversion sleeve 5, without relying on a separately set action delay between the two actuators.

[0034] In one embodiment, each radial support slider 4 has a pressure roller 14 rotatably mounted on its inner end. The pressure roller 14 rolls in contact with the fixed conical surface 6 and the fixed diameter retaining surface 7 in sequence. The outer end of each radial support slider 4 forms an arc-shaped support surface that is adapted to the inner circumference of the clamp to be welded. The radial support slider 4 corresponding to the ends of the two clamps extends to the inner side of the corresponding clamp ends to receive the force transmitted from the ends of the clamps when the ear plate is clamped.

[0035] In this embodiment, the pressure roller 14 is installed along with the radial support slider 4, and its wheel surface contacts the outer periphery of the conversion sleeve 5. When the conversion sleeve 5 moves, the pressure roller 14 first rolls along the fixed circular conical surface 6, gradually increasing the radial dimension of the contact position and pushing the radial support slider 4 outward; after the pressure roller 14 transitions to the sizing retaining surface 7, the radial dimension of the contact position remains unchanged, and the radial support slider 4 thus maintains its current support position. The arc-shaped support surface forms a surface contact with the inner periphery of the clamp to be welded or has a contact area of ​​a certain length along the circumference, which can disperse local loads compared to point support. The two radial support sliders 4 near the opening extend to the inner side of the clamp end, so that the ear plate pressing position and the inner support position are opposite to each other in the clamping direction.

[0036] In one embodiment, the first clamping slide 91 is provided with a first ear plate positioning groove 15, and the second clamping slide 92 is provided with a second ear plate positioning groove 16. The first ear plate positioning groove 15 and the second ear plate positioning groove 16 respectively have a supporting surface for supporting the bottom edge of the connecting ear plate and a positioning surface for limiting the lateral position of the connecting ear plate. The openings of the two ear plate positioning grooves face the corresponding end of the hoop, so that after the connecting ear plate is clamped, its connecting edge with the hoop is exposed in the movement path of the welding torch 13.

[0037] In this embodiment, after the connecting ear plate is inserted into the corresponding ear plate positioning groove, its bottom edge rests on the support surface, and its side is close to the positioning surface. The support surface limits the height position of the connecting ear plate, and the positioning surface restricts the lateral movement of the connecting ear plate relative to the clamping slide. The two ear plate positioning grooves face the corresponding end of the hoop, so that when the first clamping slide 91 and the second clamping slide 92 move, they can directly drive the connecting ear plate close to the hoop. The ear plate positioning grooves do not obstruct the connecting edge between the connecting ear plate and the end of the hoop, and the welding torch 13 can move along the exposed connecting edge.

[0038] In one embodiment, the radial support sliders 4 corresponding to the ends of the two bands are respectively arranged opposite to the first clamping slide 91 and the second clamping slide 92 along the clamping direction of the ear plate.

[0039] In this embodiment, when the first clamping slide 91 acts on the first connecting ear plate, the corresponding radial support slider 4 is located inside the corresponding hoop end; when the second clamping slide 92 acts on the second connecting ear plate, the other radial support slider 4 is located inside the other hoop end. The clamping load is transmitted from the outer clamping slide through the connecting ear plate and the hoop end to the inner radial support slider 4, so that the two sides of the opening form opposite bearing positions, reducing the long-distance transmission of the clamping load along the hoop circumference.

[0040] In one embodiment, the welding torch holder 12 is provided with a welding guide rail 17 extending along the connecting edge of the ear plate and the hoop, and a welding screw 18 parallel to the welding guide rail 17. The welding torch 13 is mounted on the welding torch slide 19, which is slidably connected to the welding guide rail 17 and threadedly engaged with the welding screw 18. The welding screw 18 is connected to the drive motor 20 to drive the welding torch 13 to move continuously along the connecting edge.

[0041] In this embodiment, the welding guide rail 17 defines the direction of movement of the welding torch slide 19, allowing the welding torch slide 19 to move along the connection edge between the ear plate and the hoop. The drive motor 20 drives the welding screw 18 to rotate, and the threaded engagement between the welding screw 18 and the welding torch slide 19 converts the rotation into linear displacement. The welding guide rail 17 serves as a guide for the welding torch slide 19, and the welding screw 18 provides the welding feed, ensuring that the welding torch 13 remains oriented towards the connection edge during movement.

[0042] In one embodiment, the frame 1 is further provided with a transverse guide rail 21 that spans the opening area of ​​the clamp to be welded. The welding gun holder 12 is fixed to the transverse seat 22, and the transverse seat 22 is slidably connected to the transverse guide rail 21. The extension direction of the transverse guide rail 21 spans the ends of the two clamps, so that the welding gun holder 12 can move between the welding position of the first connecting ear plate and the welding position of the second connecting ear plate, and the welding of the two connecting edges is completed sequentially by the same welding gun 13.

[0043] In this embodiment, the transverse guide rail 21 is located above or to one side of the opening area of ​​the clamp to be welded, and its extension direction passes through the welding positions corresponding to the two connecting lugs. After welding one side of the connecting edge is completed, the transverse seat 22 moves along the transverse guide rail 21, and drives the welding torch holder 12, welding guide rail 17, welding screw 18, welding torch slide 19, and welding torch 13 to move as a whole to the other side of the connecting edge. The connecting edges on both sides are processed sequentially by the same welding torch 13, which can reduce the installation space occupied by setting up two sets of welding torch feed structures separately.

[0044] In one embodiment, the positioning stage 2 is provided with a positioning detection element 23 corresponding to the clamping endpoints of the first clamping slide 91 and the second clamping slide 92. The positioning detection element 23 is signal-connected to the controller 24. The controller 24 is controlled and connected to the axial drive element 8 and the drive motor 20 respectively. After detecting that the first clamping slide 91 and the second clamping slide 92 have reached the ear plate pressing position, the controller controls the drive motor 20 to drive the welding gun slide 19 to perform welding feed.

[0045] In this embodiment, the detection position of the positioning detection element 23 corresponds to the clamping endpoints of the first clamping slide 91 and the second clamping slide 92. When the two clamping slides have not yet reached the ear plate clamping position, the controller 24 does not enter the welding torch feeding step; after the positioning detection element 23 generates the corresponding positioning signal, the controller 24 controls the drive motor 20 to rotate, and the welding screw 18 subsequently drives the welding torch slide 19 to move along the welding guide rail 17. This control sequence ensures that the welding torch feeding occurs after the connecting ear plate has been pressed against the end of the clamping band.

[0046] In one embodiment, the axial drive 8 is a servo electric cylinder, the output end of which is coaxially connected to the conversion sleeve 5 to drive the conversion sleeve 5 to move axially continuously along the fixed circle stage and the ear plate clamping stage.

[0047] In this embodiment, the output direction of the servo electric cylinder is aligned with the axis of the conversion sleeve 5, and its output end directly inputs axial displacement to the conversion sleeve 5. During one continuous stroke of the servo electric cylinder, the conversion sleeve 5 sequentially passes through the circle-fixing stage and the ear plate clamping stage, without needing to change the power source between the two stages. When the servo electric cylinder reverses its direction, the conversion sleeve 5 returns to its initial position along the original axial path.

[0048] In one embodiment, the welding torch 13 is connected to the welding power source 25, which is an automatic or semi-automatic electric arc welding power source or a plasma arc welding power source.

[0049] In this embodiment, an automatic or semi-automatic electric arc welding power source or a plasma arc welding power source can be selected based on the material, thickness, and connection edge form of the clamp and connecting ear plate. The welding power source 25 provides the welding energy required for welding to the welding torch 13. The movement of the welding torch 13 is still accomplished by the welding torch slide 19, the welding guide rail 17, the welding lead screw 18, and the drive motor 20. The selection of the welding power source does not change the sequence of actions for the clamping ring to maintain its circle and for the ear plate to clamp.

[0050] The specific embodiments described above further illustrate the inventive purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, or improvements made by those skilled in the art within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An automated welding equipment for clamps, characterized in that, The assembly includes a frame (1), on which a positioning platform (2) is provided. Radial guide grooves (3) are distributed along the inner circumference of the clamp to be welded on the positioning platform (2). Radial support sliders (4) are slidably provided in each of the radial guide grooves (3). A conversion sleeve (5) is slidably provided in the middle of the positioning platform (2). A fixed circular cone surface (6) and a fixed diameter holding surface (7) connected to the large diameter end of the fixed circular cone surface (6) are sequentially provided on the outer circumference of the conversion sleeve (5) along its working movement direction. The fixed circular cone surface (6) abuts against the inner end of each of the radial support sliders (4). The conversion sleeve (5) is connected to an axial drive component (8). Ear plate clamping assemblies (9) are provided on both sides of the opening of the clamp to be welded. The ear plate clamping assemblies (9) include a first clamping slide (91), a second clamping slide (92), and a first follower roller respectively disposed on the two. The first follower roller (93) and the second follower roller (94) are respectively provided on the conversion sleeve (5). The first stage guide groove (10) and the second stage guide groove (11) are respectively provided to accommodate the first follower roller (93) and the second follower roller (94). Both stage guide grooves are formed by connecting the axial guide section corresponding to the fixed circle cone surface (6) and the oblique clamping section corresponding to the fixed diameter holding surface (7). When the conversion sleeve (5) moves axially, it first drives the radial support slider (4) to abut against the inner circumference of the welding clamp, and then maintains the radial position of the radial support slider (4) and drives the first clamping slide (91) and the second clamping slide (92) to press against the corresponding clamp ends respectively. The frame (1) is provided with a welding gun holder (12). The welding gun holder (12) is provided with a welding gun (13) that moves along the connection edge between the ear plate and the clamp.

2. The automated welding equipment for clamps according to claim 1, characterized in that, The axial guide sections of the first stage guide groove (10) and the second stage guide groove (11) extend parallel to the axis of the conversion sleeve (5). The oblique clamping sections of the two are mirror images of the center surface of the clamp to be welded. The connection position of the axial guide section and the oblique clamping section corresponds to the axial connection area of ​​the fixed circle cone surface (6) and the fixed diameter holding surface (7). When the first follower roller (93) and the second follower roller (94) enter the corresponding oblique clamping section, each of the radial support sliders (4) is held in a radial position by the fixed diameter holding surface (7).

3. The automated welding equipment for clamps according to claim 2, characterized in that, Each radial support slider (4) has a pressure roller (14) rotatably mounted on its inner end. The pressure roller (14) rolls in contact with the fixed circle cone surface (6) and the fixed diameter holding surface (7) in sequence. The outer end of each radial support slider (4) forms an arc-shaped support surface that is adapted to the inner circumference of the clamp to be welded. The radial support slider (4) corresponding to the ends of the two clamps extends to the inner side of the corresponding clamp ends to bear the force from the clamp ends when the ear plate is clamped.

4. The automated welding equipment for clamps according to claim 3, characterized in that, The first clamping slide (91) is provided with a first ear plate positioning groove (15), and the second clamping slide (92) is provided with a second ear plate positioning groove (16). The first ear plate positioning groove (15) and the second ear plate positioning groove (16) respectively have a supporting surface for supporting the bottom edge of the connecting ear plate and a positioning surface for limiting the lateral position of the connecting ear plate. The openings of the two ear plate positioning grooves are respectively facing the corresponding end of the hoop, so that after the connecting ear plate is clamped, its connecting edge with the hoop is exposed in the moving path of the welding torch (13).

5. The automated welding equipment for clamps according to claim 4, characterized in that, The radial support sliders (4) corresponding to the ends of the two bands are respectively arranged opposite to the first clamping slide (91) and the second clamping slide (92) along the clamping direction of the ear plate.

6. The automated welding equipment for clamps according to claim 1, characterized in that, The welding torch holder (12) is provided with a welding guide rail (17) extending along the connecting edge of the ear plate and the hoop, and a welding screw (18) parallel to the welding guide rail (17). The welding torch (13) is mounted on the welding torch slide (19). The welding torch slide (19) is slidably connected to the welding guide rail (17) and threadedly engaged with the welding screw (18). The welding screw (18) is connected to the drive motor (20) to drive the welding torch (13) to move continuously along the connecting edge.

7. The automated welding equipment for clamps according to claim 6, characterized in that, The frame (1) is also provided with a transverse guide rail (21) that spans the opening area of ​​the clamp to be welded. The welding gun holder (12) is fixed to the transverse seat (22). The transverse seat (22) is slidably connected to the transverse guide rail (21). The extension direction of the transverse guide rail (21) spans the ends of the two clamps, so that the welding gun holder (12) can move between the welding position of the first connecting ear plate and the welding position of the second connecting ear plate, and the welding of the two connecting edges is completed sequentially by the same welding gun (13).

8. The automated welding equipment for clamps according to claim 7, characterized in that, The positioning platform (2) is provided with a positioning detection element (23) corresponding to the clamping endpoint of the first clamping slide (91) and the second clamping slide (92). The positioning detection element (23) is signal-connected to the controller (24). The controller (24) is controlled and connected to the axial drive (8) and the drive motor (20) respectively. After detecting that the first clamping slide (91) and the second clamping slide (92) have reached the ear plate pressing position, the controller controls the drive motor (20) to drive the welding gun slide (19) to perform welding feed.

9. The automated welding equipment for clamps according to claim 1, characterized in that, The axial drive (8) is a servo electric cylinder, the output end of which is coaxially connected to the conversion sleeve (5) to drive the conversion sleeve (5) to move axially continuously along the fixed circle stage and the ear plate clamping stage.

10. The automated welding equipment for clamps according to claim 6, characterized in that, The welding torch (13) is connected to the welding power source (25), which is an automatic or semi-automatic electric arc welding power source or a plasma arc welding power source.

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