A positioning device for roll welding

Abstract

The utility model provides a kind of positioning device for roll welding, including processing table, the bottom of processing table is provided with support leg, the left and right sides of processing table are provided with the vertical plate capable of sliding operation along left and right direction, vertical plate is rotatably provided with driving shaft, driving shaft is provided with clamping module, fixed frame is further slidably arranged on processing table, first telescopic push rod, support frame, support roller.According to the positioning device for roll welding of the utility model, not only the basic demand of positioning and fixing and screwing adjustment to tubular workpiece can be met, but also the tubular workpiece can be assisted to support by the mode of setting movable support structure in the middle, and interference to the process of welding is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of roll welding technology, and specifically relates to a positioning device for roll welding. Background Technology

[0002] In the process of rolling welding cylindrical workpieces, it is usually necessary to accurately position, clamp, and rotate them continuously.

[0003] While existing roll welding positioning devices can fulfill basic positioning, fixing, and rotation adjustment functions, most only apply constraints to the two ends of the workpiece, lacking effective support for the middle section. This structure leaves the middle of the cylindrical workpiece suspended, making it prone to bending deformation. This not only reduces the stability of the overall processing, affecting welding accuracy and work efficiency, but also may cause premature deformation or wear of the positioning components at both ends due to uneven stress, thus shortening the equipment's lifespan and increasing maintenance costs. Therefore, there is an urgent need for a new type of roll welding positioning device that can achieve full-section support and improve workpiece rigidity and positioning reliability. Utility Model Content

[0004] In view of this, this utility model addresses the shortcomings of the prior art by providing a positioning device for roll welding. It not only meets the basic requirements for positioning, fixing, and adjusting cylindrical workpieces, but also provides auxiliary support for the cylindrical workpieces by setting a movable support structure in the middle, thus avoiding interference with the welding process.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a positioning device for roll welding, including a processing table, a support leg provided at the bottom of the processing table, vertical plates that can slide in the left and right directions provided on the left and right sides of the processing table, a drive shaft rotatably provided on the vertical plates, a clamping module provided on the drive shaft, a fixed frame slidably provided on the processing table, a first telescopic push rod vertically provided on the top and bottom walls of the fixed frame, a U-shaped support frame provided on the output shaft of the first telescopic push rod, and support rollers located on the front and rear sides of the first telescopic push rod rotatably provided between the two ends of the support frame.

[0006] As a further improvement of this utility model, the top of the fixed frame is also provided with a connecting tube located at the side end of the first telescopic push rod, and the bottom of the support frame is provided with a connecting rod that is inserted into the connecting tube.

[0007] As a further improvement of this utility model, sliding support frames are provided on the front and rear sides of the top of the processing table along the left and right directions. A sliding support sleeve, slidably connected to the sliding support frames, is provided on the vertical plate. Second telescopic push rods are respectively installed at the left and right ends of the top of the processing table via fastening plates. The output shaft of the second telescopic push rod is connected to the vertical plate. The vertical plate slides left and right along the sliding support frames, and its position is adjusted in conjunction with the second telescopic push rods to accommodate cylindrical workpieces of different lengths. Simultaneously, the drive motor drives the drive shaft to rotate through a gear transmission assembly, realizing automatic uniform rolling of the workpiece, improving welding efficiency and automation.

[0008] As a further improvement of this utility model, the clamping module includes a fixing frame connected to the drive shaft. The fixing frame is U-shaped, and a fixing plate is provided on the side end of the fixing frame. An installation groove is provided on the outer side wall of the fixing plate. A bidirectional screw is rotatably installed in the installation groove. A drive handwheel for driving two bidirectional rotations is provided on the installation groove. Mounting blocks that are slidably connected to the installation groove are screwed to both sides of the bidirectional screw. A clamping plate for clamping and fixing the side end of the cylindrical workpiece is provided on the mounting block through the mounting plate.

[0009] As a further improvement of this utility model, the inner wall of the clamping plate is arc-shaped, and an anti-slip pad is also provided on the inner wall of the clamping plate.

[0010] As a further improvement of this utility model, a conical support cylinder is also provided on the inner wall of the fixing plate. The conical support cylinder on the fixing plate can cooperate with the end of the cylindrical workpiece, playing a good guiding and centering role, further improving the clamping accuracy, and ensuring that the workpiece axis is consistent with the rolling welding trajectory.

[0011] As a further improvement of this utility model, a drive motor is provided on a vertical plate, and a gear transmission assembly is provided between the output shaft of the drive motor and the drive shaft.

[0012] As a further improvement of this utility model, an extension plate is also provided at the bottom side of the support leg, and an anchor bolt for connecting to the ground is provided on the extension plate. The support leg has an extension plate at the bottom and is fixed to the ground by the anchor bolt, which effectively enhances the stability of the whole machine and reduces the impact of vibration generated during the rolling welding process on the processing accuracy.

[0013] A linear slide is installed at the bottom of the processing table along the left-right direction. A sliding connecting sleeve connected to a sliding support frame is installed at the side end of the fixed frame. A connecting plate connected to the sliding connecting sleeve is installed on the slide base of the linear slide. Through the cooperation of the linear slide, sliding connecting sleeve, connecting plate and sliding support frame, the fixed frame can be slidably driven, thereby changing and adjusting the horizontal position of the support frame and support roller, avoiding interference with the welding position of the cylindrical workpiece.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: Firstly, by setting a liftable U-shaped support frame and support rollers in the middle of the processing table, effective support can be provided for the middle of the cylindrical workpiece, preventing it from sagging and deforming due to its own weight or welding stress during the roll welding process. This design significantly enhances the overall rigidity and positioning accuracy of the workpiece, and improves the welding quality and operational stability.

[0015] Secondly, the support frame achieves vertical lifting and lowering through the first telescopic push rod, and the support height can be flexibly adjusted according to the actual welding position. When necessary, the support roller can be lifted as a whole to detach from the workpiece, thereby avoiding the welding gun's running path and ensuring that the welding process is not obstructed, thus balancing support function and operational freedom.

[0016] Thirdly, the coordinated design of the connecting tube and the connecting rod effectively improves the straightness and stability of the support frame during the lifting process, prevents jamming or tilting, ensures uniform transmission of support force, and extends the service life of the device.

[0017] Fourth, the inner wall of the clamping plate adopts an arc design and is equipped with an anti-slip pad, which can better fit the outer wall of the end of the cylindrical workpiece, increase friction, and prevent slippage; in conjunction with the bidirectional screw drive structure, the opening and closing action of the clamping plates on both sides can be adjusted synchronously by driving the handwheel, and the clamping force is controllable and the operation is convenient. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the clamping module of this utility model; Figure 3 This is a structural diagram of the fixed frame, the first telescopic push rod, the support frame, the support roller, the connecting cylinder, and the connecting rod of this utility model.

[0020] In the diagram: 101, processing table; 102, support leg; 103, vertical plate; 104, drive shaft; 105, fixed frame; 106, first telescopic push rod; 107, support frame; 108, support roller; 109, connecting sleeve; 110, connecting rod; 111, bearing; 112, extension plate; 113, anchor bolt; 201, sliding support frame; 202, sliding support sleeve; 203, fastening plate; 204, second telescopic push rod; 301, fixed frame; 302, fixed plate; 303, mounting groove; 304, double-acting screw; 305, drive handwheel; 306, mounting block; 307, clamping plate; 308, anti-slip pad; 309, support sleeve; 310, drive motor; 311, gear transmission assembly; 312, mounting plate; 401, linear slide; 402, sliding connecting sleeve; 403, connecting plate. Detailed Implementation

[0021] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0022] like Figure 1 , 3 As shown, a positioning device for roll welding includes a processing table 101, a support leg 102 at the bottom of the processing table 101, vertical plates 103 that can slide in the left and right directions on the left and right sides of the processing table 101, a drive shaft 104 rotatably mounted on the vertical plate 103 via a bearing 111, a clamping module mounted on the drive shaft 104, a fixed frame 105 slidably mounted on the processing table 101, a first telescopic push rod 106 vertically mounted on the top and bottom walls of the fixed frame 105, a U-shaped support frame 107 mounted on the output shaft of the first telescopic push rod 106, and support rollers 108 rotatably mounted between the two ends of the support frame 107 on the front and rear sides of the first telescopic push rod 106.

[0023] like Figure 1 As shown, the top of the fixed frame 105 is also provided with a connecting plug 109 located at the side end of the first telescopic push rod 106, and the bottom of the support frame 107 is provided with a connecting rod 110 that is inserted into the connecting plug 109.

[0024] like Figure 1 , 2 As shown, sliding support frames 201 are provided on the front and rear sides of the top of the processing table 101 along the left and right directions. A sliding support sleeve 202 is provided on the vertical plate 103, which is slidably connected to the sliding support frames 201. Second telescopic push rods 204 are respectively provided on the left and right ends of the top of the processing table 101 through fastening plates 203. The output shaft of the second telescopic push rod 204 is connected to the vertical plate 103. The vertical plate 103 slides left and right along the sliding support frames 201, and its position is adjusted in conjunction with the second telescopic push rods 204 to accommodate cylindrical workpieces of different lengths. At the same time, the drive motor 310 drives the drive shaft 104 to rotate through the gear transmission assembly 311, realizing the automatic uniform rolling of the workpiece, improving welding efficiency and automation.

[0025] like Figure 1 , 2As shown, the clamping module includes a fixing frame 301 connected to the drive shaft 104. The fixing frame 301 is U-shaped. A fixing plate 302 is provided on the side end of the fixing frame 301. An installation groove 303 is provided on the outer side wall of the fixing plate 302. A bidirectional screw 304 is rotatably installed in the installation groove 303. A drive handwheel 305 for driving two bidirectional rotations is provided on the installation groove 303. Mounting blocks 306 that are slidably connected to the mounting groove 303 are screwed to both sides of the bidirectional screw 304. A clamping plate 307 for clamping and fixing the side end of the cylindrical workpiece is provided on the mounting block 306 through the mounting plate 312.

[0026] like Figure 1 , 2 As shown, the inner wall of the clamping plate 307 is arc-shaped, and an anti-slip pad 308 is also provided on the inner wall of the clamping plate 307.

[0027] like Figure 1 , 2 As shown, a conical support sleeve 309 is also provided on the inner wall of the fixing plate 302. The conical support sleeve 309 provided on the fixing plate 302 can cooperate with the end of the cylindrical workpiece, playing a good guiding and centering role, further improving the clamping accuracy, and ensuring that the workpiece axis is consistent with the rolling welding trajectory.

[0028] like Figure 1 , 2 As shown, a drive motor 310 is mounted on a vertical plate 103, and a gear transmission assembly 311 is provided between the output shaft of the drive motor 310 and the drive shaft 104.

[0029] The cylindrical workpiece to be welded is moved horizontally to the upper side of the processing table 101, so that both ends of the cylindrical workpiece are located between the two supporting inserts 309 on both sides. Then, the output shafts of the second telescopic push rods 204 on both sides can be driven to extend a certain length, so that the supporting inserts 309 on both sides are inserted into the ends of the cylindrical workpiece for initial fixation, and play a guiding and centering role to ensure that the workpiece axis is aligned with the rolling welding trajectory. Then, the drive handwheel 305 can be operated to drive the bidirectional screw 304 to rotate, so that the mounting blocks 306 on both sides move synchronously towards or away from each other in the mounting groove 303, thereby adjusting the opening and closing of the clamping plate 307. The clamping plate 307 moves towards the end of the workpiece under the connection of the mounting plate 312, and its arc-shaped inner wall fits against the outer wall of the workpiece. With the help of the anti-slip pad 308, the friction is enhanced to achieve reliable clamping.

[0030] Then, the first telescopic push rod 106 can be activated, causing it to extend axially upwards, which in turn drives the U-shaped support frame 107 to move upwards, so that the support rollers 108 on both the front and rear sides contact the lower middle part of the cylindrical workpiece. The cooperation between the connecting insert 109 and the connecting rod 110 ensures that the support frame 107 rises and falls vertically and smoothly, and prevents the first telescopic push rod 106 from being easily damaged by deformation. Supporting the middle part of the cylindrical workpiece with the support rollers 108 can effectively prevent the workpiece from bending and deforming due to its own weight or welding thermal stress, thereby improving the overall rigidity and welding stability.

[0031] Next, the drive motor 310 can be started, and power is transmitted to the drive shaft 104 through the gear transmission assembly 311. The drive shaft 104 drives the clamping module to rotate, thereby driving the cylindrical workpiece to rotate at a uniform speed. During this process, the welding torch is fixed to the external welding equipment and performs continuous welding along the axial or circumferential direction of the workpiece. According to the welding path requirements, the first telescopic push rod 106 can be controlled in a timely manner to lift the support roller 108 away from the workpiece surface, avoiding the welding torch operating area and preventing interference.

[0032] Furthermore, it can drive the slide block of the linear slide table 401 to move left and right, and through the connecting plate 403, drive the sliding connecting sleeve 402 to slide on the sliding support frame 201, thereby driving the fixed frame 105 to slide, thus changing and adjusting the horizontal position of the support frame 107 and the support roller 108, avoiding interference with the welding position of the cylindrical workpiece. During long-distance or multi-segment welding, the height of the support roller 108 can be adjusted in segments according to the weld position—maintaining support in non-welding areas and temporarily raising it in welding areas, realizing "follow-up" auxiliary support, balancing structural strength and operational flexibility.

[0033] After welding is completed, turn off the drive motor 310, lower the support roller 108 to support the weight of the workpiece, then rotate the drive handwheel 305 in the opposite direction to loosen the clamping plate 307, remove the support insert 309, and finally remove the workpiece from the device.

[0034] According to another embodiment of the present invention, such as Figure 1 As shown, the bottom side of the support leg 102 is also provided with an extension plate 112, and the extension plate 112 is also provided with anchor bolts 113 for connecting to the ground. By simply having the anchor bolts 113 pass through the extension plate 112 and connect to the anchor fastening cylinder in the ground, the device can be fixed to the ground, effectively enhancing the stability of the whole machine and reducing the impact of vibration generated during the rolling welding process on the processing accuracy.

[0035] The above are preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A positioning device for roll welding, comprising a processing table (101), wherein a support leg (102) is provided at the bottom of the processing table (101), characterized in that: The processing table (101) is provided with vertical plates (103) that can slide in the left and right directions on both sides. A drive shaft (104) is rotatably provided on the vertical plate (103). A clamping module is provided on the drive shaft (104). A fixed frame (105) is also slidably provided on the processing table (101). A first telescopic push rod (106) is vertically provided on the top and bottom walls of the fixed frame (105). A U-shaped support frame (107) is provided on the output shaft of the first telescopic push rod (106). Support rollers (108) located on the front and rear sides of the first telescopic push rod (106) are rotatably provided between the two ends of the support frame (107).

2. The positioning device for roll welding as described in claim 1, characterized in that: The top of the fixed frame (105) is also provided with a connecting tube (109) located at the side end of the first telescopic push rod (106), and the bottom of the support frame (107) is provided with a connecting rod (110) that is inserted into the connecting tube (109).

3. The positioning device for roll welding as described in claim 2, characterized in that: The processing table (101) has sliding support frames (201) on the front and rear sides of the top along the left and right directions. The vertical plate (103) is provided with a sliding support sleeve (202) that is slidably connected to the sliding support frame (201). The left and right ends of the top of the processing table (101) are respectively provided with a second telescopic push rod (204) through a fastening plate (203). The output shaft of the second telescopic push rod (204) is connected to the vertical plate (103).

4. The positioning device for roll welding as described in claim 3, characterized in that: The clamping module includes a fixing frame (301) connected to the drive shaft (104). The fixing frame (301) is U-shaped. A fixing plate (302) is provided on the side end of the fixing frame (301). An installation groove (303) is provided on the outer side wall of the fixing plate (302). A bidirectional screw (304) is rotatably provided in the installation groove (303). A drive handwheel (305) for driving two bidirectional rotations is provided on the installation groove (303). Mounting blocks (306) that are slidably connected to the installation groove (303) are screwed to both sides of the bidirectional screw (304). A clamping plate (307) for clamping and fixing the side end of the cylindrical workpiece is provided on the mounting block (306) through the mounting plate (312).

5. The positioning device for roll welding as described in claim 4, characterized in that: The inner wall of the clamping plate (307) is arc-shaped, and an anti-slip pad (308) is also provided on the inner wall of the clamping plate (307).

6. The positioning device for roll welding as described in claim 5, characterized in that: The inner wall of the fixing plate (302) is also provided with a conical support insert (309).

7. The positioning device for roll welding as described in claim 6, characterized in that: A drive motor (310) is provided on one of the vertical plates (103), and a gear transmission assembly (311) is provided between the output shaft of the drive motor (310) and the drive shaft (104).

8. The positioning device for roll welding as described in any one of claims 1-7, characterized in that: The bottom side of the support leg (102) is also provided with an extension plate (112), and the extension plate (112) is also provided with anchor bolts (113) for connecting to the ground.

9. The positioning device for roll welding as described in claim 3, characterized in that: The bottom of the processing table (101) is provided with a linear slide (401) in the left-right direction, and the side end of the fixed frame (105) is provided with a sliding connecting sleeve (402) connected to the sliding support frame (201). The slide of the linear slide (401) is provided with a connecting plate (403) connected to the sliding connecting sleeve (402).

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