A circular tube welding fixture

Abstract

This utility model relates to a welding fixture for round pipes, comprising a base and a fixed frame mounted on the base. Sliding frames that cooperate with the fixed frame are located at both ends of the base. The sliding frames are slidably mounted on both ends of the base via a lead screw sliding module. Clamping modules are provided on both the fixed frame and the sliding frames. Each clamping module includes a support frame and a fixed block. One end of the fixed block has a roller, and the support frame has a rotating disk that cooperates with the fixed block. One end of the rotating disk has a transmission component, and both the fixed frame and the sliding frame have driving components that cooperate with the transmission components. This utility model achieves dual-point contact with the round pipe through the cooperation of the clamping modules on the sliding frame and the fixed frame, ensuring the stability of the round pipe during the welding process. Furthermore, the cooperation of the fixed block, rotating disk, transmission component, and driving component allows the rollers to rotate synchronously, accommodating round pipes of different diameters while ensuring the coaxiality between the pipes, thereby enhancing the versatility and precision of the fixture.

Description

Technical Field

[0001] This utility model relates to the field of welding fixtures, specifically to a welding fixture for round pipes. Background Technology

[0002] Welding, a common manufacturing technique, uses high temperature or high pressure to permanently join metal materials. In the welding of round tubes, due to their unique shape, traditional welding fixtures often struggle to effectively clamp and position them. Therefore, various round tube welding tooling fixtures have emerged on the market.

[0003] Existing welding fixtures for round pipes can be found in patent publication CN221773850U, which discloses a welding fixture for the outer diameter of a corrugated pipe. This fixture has an adjustable clamping diameter and uses two sets of clamping mechanisms to hold two round pipes respectively, thus achieving clamping and positioning. However, because its clamping mechanism can only hold a section of the round pipe, when the pipe is long or heavy, it is prone to shaking or displacement during welding, affecting the welding effect and accuracy. Therefore, this utility model proposes an adjustable, dual-point clamping welding fixture for round pipes. Summary of the Invention

[0004] This utility model provides a round pipe welding fixture, which solves the problem of shaking or displacement that easily occurs when existing round pipe welding fixtures clamp long or heavy round pipes by means of a clamping module on a fixed frame and a sliding frame.

[0005] The objective of this utility model is achieved through the following means:

[0006] A round tube welding fixture includes a base and a fixed frame symmetrically arranged on the base. Both ends of the base are provided with sliding frames that cooperate with the fixed frames. The sliding frames are slidably installed on both ends of the base through a screw sliding module. Both the fixed frame and the sliding frame are provided with clamping modules.

[0007] The clamping module includes a support frame and several fixing blocks arranged around the support frame. One end of each fixing block is provided with a rotatable roller. The support frame is provided with a rotating disk that slides with the fixing blocks. One end of the rotating disk is provided with a transmission component. The fixing frame and the sliding frame are respectively provided with driving components that cooperate with the transmission component.

[0008] Furthermore, both the transmission assembly and the driving component have pulleys at one end, and a transmission belt is sleeved between the pulleys.

[0009] Furthermore, the transmission assembly includes a worm gear and a worm shaft that mesh with each other. The worm gear is fixedly installed at one end of the rotating disk, and the worm shaft is rotatably installed on the support frame.

[0010] Furthermore, the rotating disk and the support frame are respectively provided with sliding strips and guide grooves that cooperate with the fixed block.

[0011] Furthermore, the fixing block is provided with a bracket for mounting the roller, and the bracket is provided with a rotating shaft that cooperates with the roller.

[0012] Furthermore, the lead screw sliding module includes a drive lead screw and two linear guides. The drive lead screw is rotatably mounted on the base, and the two linear guides are symmetrically arranged on both sides of the drive lead screw. One end of the drive lead screw is equipped with a drive motor, and the sliding frame is respectively equipped with a lead screw nut and a slider that cooperate with the drive lead screw and the linear guides.

[0013] Furthermore, both sides of the base are provided with inclined pressure grooves, and several inclined pressure blocks that cooperate with the linear guide are provided in the inclined pressure grooves.

[0014] The beneficial effects of this utility model are as follows: By cooperating with the clamping modules mounted on the sliding frame and the fixed frame, dual-point contact with the round tube is achieved, ensuring the stability of the round tube during the welding process. Furthermore, through the cooperation of the fixed block, rotating disk, transmission assembly, and driving component, the rollers rotate synchronously, adapting to round tubes of different diameters while ensuring the coaxiality between the tubes, thereby enhancing the versatility and precision of the fixture. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first structure of a circular tube welding fixture according to the present invention;

[0016] Figure 2 This is a schematic diagram of the second structure of a circular tube welding fixture according to the present invention;

[0017] Figure 3 for Figure 2 Enlarged diagram of A in the middle;

[0018] Figure 4 This is a first partial sectional view of a circular tube welding fixture according to the present invention;

[0019] Figure 5 This is a second partial sectional view of a circular tube welding fixture according to the present invention;

[0020] Figure 6 This is a third partial sectional view of a circular tube welding fixture according to the present invention;

[0021] Figure 7This is a schematic diagram showing the cooperation between the fixed block and the rotating disk in this utility model;

[0022] The reference numerals in the diagram are as follows: 1-base, 11-slanted pressure groove, 12-slanted pressure block, 13-foot, 14-caster wheel, 2-fixed frame, 3-sliding frame, 31-lead screw nut, 32-slider, 4-lead screw sliding module, 41-drive lead screw, 42-linear rail, 43-drive motor, 5-clamping module, 51-support frame, 511-guide groove, 52-fixed block, 521-bracket, 522-rotating shaft, 53-roller, 54-rotating disk, 541-sliding bar, 55-transmission assembly, 551-worm gear, 552-worm, 56-driving component, 6-pulley, 7-transmission belt. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] In this embodiment, refer to Figures 1-7 This invention relates to a circular tube welding fixture, comprising a base 1 and fixed frames 2 symmetrically arranged on the base 1. Both ends of the base 1 are equipped with sliding frames 3 that cooperate with the fixed frames 2. The sliding frames 3 are slidably mounted on both ends of the base 1 via a screw sliding module 4. Both the fixed frames 2 and the sliding frames 3 are equipped with clamping modules 5. The fixed frames 2 have oblong grooves on both sides, allowing for small-range adjustment of their positions, thereby shortening the distance between the fixed frames 2. This ensures welding while bringing the clamping modules 5 closer to the welding end, thus improving the welding accuracy of the fixture. The screw sliding module 4 adjusts the sliding frames 3 at both ends, creating a certain distance between the clamping modules 5 on the sliding frames 3 and the clamping modules 5 on the fixed frames 2 to accommodate circular tubes of different lengths. The clamping modules 5 on the fixed frames 2 and the sliding frames 3 respectively achieve dual-point clamping of the circular tube, preventing shaking or displacement of the tube during welding and ensuring welding stability and accuracy.

[0025] The clamping module 5 includes a support frame 51 and several fixing blocks 52 arranged around the support frame 51. One end of the fixing block 52 is provided with a rotatable roller 53. The support frame 51 is provided with a rotating disk 54 that slides with the fixing block 52. One end of the rotating disk 54 is provided with a transmission component 55. The fixing frame 2 and the sliding frame 3 are respectively provided with a driving component 56 that cooperates with the transmission component 55.

[0026] Both the transmission assembly 55 and the drive component 56 have pulleys 6 at one end, and a transmission belt 7 is fitted between the pulleys 6. The transmission assembly 55 includes a worm gear 551 and a worm 552 that mesh with each other. The worm gear 551 is fixedly installed at one end of the rotating disk 54, and the worm 552 is rotatably installed on the support frame 51. The worm gear 551, the worm 552, and the rotating disk 54 are all installed in the support frame 51 by bearings, and the rotating disk 54 and the worm gear 551 are fixedly connected by bolts. The rotating disk 54 and the support frame 51 are respectively provided with a sliding strip 541 and a guide groove 511 that cooperate with the fixed block 52. The fixed block 52 is provided with a bracket 521 for mounting the roller 53, and the bracket 521 is provided with a rotating shaft 522 that cooperates with the roller 53.

[0027] In use, the drive unit 56 drives the worm gear 552 to rotate through the engagement of the transmission belt 7 and the pulley 6. The worm gear 552 then meshes with the worm wheel 551, which in turn drives the rotating disk 54 to rotate. During rotation, the sliding strip 541 on the rotating disk 54 engages with the fixed block 52, causing the fixed block 52 to slide along the guide groove 511 on the support frame 51. This pushes the roller 53 to contact the round tube, achieving center positioning and clamping of the tube. Furthermore, since the roller 53 is mounted on the fixed block 52 through the engagement of the rotating shaft 522 and the bracket 521, the round tube can rotate while being clamped, facilitating omnidirectional welding of the tube.

[0028] The lead screw sliding module 4 includes a drive lead screw 41 and two linear guides 42. The drive lead screw 41 is rotatably mounted on the base 1, and the two linear guides 42 are symmetrically arranged on both sides of the drive lead screw 41. A drive motor 43 is provided at one end of the drive lead screw 41. The sliding frame 3 is provided with a lead screw nut 31 and a slider 32 that cooperate with the drive lead screw 41 and the linear guides 42, respectively. Through the cooperation of the drive lead screw 41, the lead screw nut 31, and the drive motor 43, the sliding frame 3 slides along the drive lead screw 41, thereby adjusting the position of the clamping module. The slider 32, in cooperation with the linear guides 42, provides support and guidance to both sides of the sliding frame 3, making the sliding frame 3 more stable during sliding and ensuring the precise positioning of the clamping module 5.

[0029] Both sides of the base 1 are provided with inclined pressure grooves 11, and several inclined pressure blocks 12 that cooperate with the linear rail 42 are provided in the inclined pressure grooves 11. The inclined pressure blocks 12 are slidably installed in the inclined pressure grooves 11 by bolts. The several inclined pressure blocks 12 are linearly distributed along the length of the inclined pressure grooves 11. One side of the inclined pressure grooves 11 is provided with a guide wall that cooperates with the inclined pressure blocks 12. The two ends of the inclined pressure blocks 12 are respectively attached to the linear rail 42 and the guide wall of the inclined pressure groove 11. When the bolts are rotated, the inclined pressure blocks 12 are pressed against the linear rail 42 under the action of the guide wall, thereby cooperating with the base 1 and firmly fixing the linear rail 42 to the base 1, preventing the linear rail 42 from shaking or deviating during the sliding of the sliding frame 3, and ensuring the stability and accuracy of the sliding of the sliding frame 3.

[0030] The lower end of the base 1 is equipped with several feet 13 and casters 14. The feet 13 are adjustablely mounted on the base 1 by means of bolts and nuts. The casters 14 are rotatably mounted on the lower end of the base 1 by means of bearings, facilitating the movement and turning of the entire tooling fixture. When the tooling fixture needs to be moved, the position of the feet 13 can be adjusted by rotating the bolts and nuts, so that the feet 13 are lifted off the ground, and the tooling fixture can be moved to the required working position by means of the casters 14. After the tooling fixture has moved to the designated position, the feet 13 are brought into contact with the ground by means of bolts and nuts, thereby stably fixing the tooling fixture on the ground, preventing the tooling fixture from shaking or moving during the welding process, and ensuring the stability and accuracy of the welding.

[0031] One end of the caster wheel 14 is equipped with a locking plate. When the tooling fixture moves to the designated position, the caster wheel 14 can be locked by the locking plate to temporarily fix it and prevent the tooling fixture from moving when adjusting the position of the foot 13, thereby improving the stability of the tooling fixture.

[0032] The beneficial effects of this utility model are as follows: The clamping module 5, mounted on the sliding frame 3 and the fixed frame 2, works together to achieve dual-point contact with the round tube, ensuring the stability of the round tube during the welding process. Furthermore, the cooperation of the fixed block 52, the rotating disk 54, the transmission assembly 55, and the driving component 56 enables the rollers 53 to rotate synchronously, accommodating round tubes of different diameters while ensuring the coaxiality between the tubes, thereby enhancing the versatility and precision of the fixture.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A circular pipe welding fixture, characterized in that, It includes a base (1) and a fixing frame (2) symmetrically arranged on the base (1). Both ends of the base (1) are provided with sliding frames (3) that cooperate with the fixing frame (2). The sliding frames (3) are slidably installed on both ends of the base (1) through a screw sliding module (4). Both the fixing frame (2) and the sliding frame (3) are provided with clamping modules (5). The clamping module (5) includes a support frame (51) and a plurality of fixing blocks (52) arranged around the support frame (51). One end of the fixing block (52) is provided with a rotatable roller (53). The support frame (51) is provided with a rotating disk (54) that slides with the fixing block (52). One end of the rotating disk (54) is provided with a transmission component (55). The fixing frame (2) and the sliding frame (3) are respectively provided with a driving component (56) that cooperates with the transmission component (55).

2. The circular tube welding fixture according to claim 1, characterized in that: Both the transmission assembly (55) and the driving component (56) are provided with pulleys (6) at one end, and a transmission belt (7) is sleeved between the pulleys (6).

3. A circular tube welding fixture according to claim 1 or 2, characterized in that: The transmission assembly (55) includes a worm gear (551) and a worm (552) that mesh with each other. The worm gear (551) is fixedly installed at one end of the rotating disk (54), and the worm (552) is rotatably installed on the support frame (51).

4. The circular tube welding fixture according to claim 1, characterized in that: The rotating disk (54) and the support frame (51) are respectively provided with a sliding strip (541) and a guide groove (511) that cooperate with the fixed block (52).

5. The circular tube welding fixture according to claim 1, characterized in that: The fixing block (52) is provided with a bracket (521) for mounting the roller (53), and the bracket (521) is provided with a rotating shaft (522) that cooperates with the roller (53).

6. The circular tube welding fixture according to claim 1, characterized in that: The lead screw sliding module (4) includes a drive lead screw (41) and two linear rails (42). The drive lead screw (41) is rotatably mounted on the base (1). The two linear rails (42) are symmetrically arranged on both sides of the drive lead screw (41). One end of the drive lead screw (41) is provided with a drive motor (43). The sliding frame (3) is provided with a lead screw nut (31) and a slider (32) that cooperate with the drive lead screw (41) and the linear rails (42).

7. The circular tube welding fixture according to claim 6, characterized in that: Both sides of the base (1) are provided with inclined pressure grooves (11), and several inclined pressure blocks (12) that cooperate with the linear rail (42) are provided in the inclined pressure grooves (11).

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