A stainless steel pipe welding device
By designing a stainless steel pipe welding device, the positioning components and drive mechanism are used to realize the automatic alignment and synchronous movement of stainless steel pipes, which solves the problems of cumbersome operation and low efficiency in the existing technology, and realizes efficient and stable stainless steel pipe welding.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG TSINGSHAN STEEL PIPE CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-14
AI Technical Summary
The existing stainless steel pipe welding process requires high technical skills from workers, is cumbersome to operate, and is inefficient. The method of welding with a handheld welding gun has high limitations.
A stainless steel pipe welding device was designed, including a frame, a welding torch and a drive mechanism. The positioning component and the drive component are used to realize the automatic alignment and synchronous movement of the stainless steel pipe. The positioning plate and the drive roller drive the end of the stainless steel pipe to align with the working port of the welding torch, thereby realizing automatic welding.
It simplifies the welding process of stainless steel pipes, saves manpower, improves welding efficiency, and ensures welding accuracy and stability.
Smart Images
Figure CN224488213U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of stainless steel pipe processing equipment, and in particular to a stainless steel pipe welding device. Background Technology
[0002] The processing of stainless steel pipes involves butt welding, which involves aligning the ends of two stainless steel pipes and then performing circumferential welding at the joint. In existing technology, workers place the two stainless steel pipes on a fixture, align the ends, and then use a welding torch to spot weld and position them. Then, a drive mechanism rotates the two butt-jointed stainless steel pipes to perform circumferential welding at the joint. However, this processing method requires high technical skills from workers, and the hand-held welding torch method requires workers to take protective measures during welding. It has high limitations, is cumbersome, and has low efficiency.
[0003] To address the aforementioned problems, this utility model provides improvements. Utility Model Content
[0004] This utility model proposes a stainless steel pipe welding device, which solves the above-mentioned problems existing in the use of the prior art.
[0005] The technical solution of this utility model is implemented as follows:
[0006] A stainless steel pipe welding device includes a frame, a welding torch, and a drive mechanism. A support frame is mounted on the frame. A lifting frame, which is longitudinally slidably mounted on the support frame and driven by a first motor mounted on the support frame, is connected to the lifting frame. The welding torch is fixedly mounted on the lifting frame with its working nozzle facing downwards. Two positioning components are symmetrically arranged along the welding torch on the lifting frame. Each positioning component includes an arc-shaped fixed positioning hoop and a movable positioning hoop. The fixed positioning hoop is horizontally slidably mounted on the lifting frame with its opening facing downwards. The movable positioning hoop is rotatably connected to the end of the fixed positioning hoop via a swing shaft. A first cylinder, hinged to the swing shaft, is rotatably mounted on the fixed positioning hoop. A first lead screw, driven by a second motor mounted on the lifting frame, is rotatably mounted on the lifting frame. The two fixed positioning hoops are respectively screwed onto two threaded sections with opposite directions of rotation on the first lead screw. A plurality of positioning rollers are rotatably mounted on the inner walls of the fixed and movable positioning hoops. A positioning plate, located directly below the welding torch and driven by the second cylinder mounted on the frame, is longitudinally slidably mounted on the frame.
[0007] Preferably, the support frame is provided with two vertical first linear guide rails, the lifting frame is fixedly connected to the sliding seat of the first linear guide rails, and a second lead screw is rotatably provided on the support frame, which is screwed to the lifting frame and driven by the first motor.
[0008] Preferably, the lifting frame is provided with two horizontal second linear guide rails, and the fixing and positioning hoop is fixedly connected to the sliding seat of the second linear guide rail.
[0009] Preferably, two vertical guide rods are fixedly installed at the lower end of the positioning plate and pass through the frame, and the output shaft of the second cylinder is fixedly connected to the lower end of the positioning plate.
[0010] Preferably, the driving mechanism includes a support frame and a driving assembly. Several support frames are spaced apart and arranged on the frame on both sides of the positioning plate. Two driving assemblies are symmetrically arranged on the frame along the welding gun. Each driving assembly includes a third motor and two driving rollers. The two driving rollers are rotatably arranged on the frame and symmetrically distributed along the central axis of the support frame. The third motor is arranged on the frame and rotatably connected to one of the driving rollers.
[0011] Preferably, the driving mechanism further includes a limiting component, which includes two limiting hoops that are arc-shaped and symmetrically distributed along the central axis of the support frame. The limiting hoops are rotatably mounted on the frame, and the two limiting hoops are connected to a third cylinder mounted on the frame via a linkage mechanism to achieve symmetrical movement. Several limiting rollers are rotatably mounted on the limiting hoops.
[0012] Preferably, the positioning roller is fitted with an anti-slip pad layer on its circumferential surface.
[0013] In summary, the beneficial effects of this utility model are as follows: the positioning plate enables the two stainless steel pipes to be pre-positioned and symmetrically positioned on both sides of the welding torch; the two positioning components that respectively hold the two stainless steel pipes move the two stainless steel pipes synchronously, so that the contact of the two stainless steel pipes after the ends are joined is aligned with the working port of the welding torch, making the alignment operation of the welding torch and the joint of the two stainless steel pipes more convenient, thereby facilitating the welding operation of stainless steel pipes, saving manpower and improving efficiency. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a structural schematic diagram from another perspective of the present invention;
[0017] Figure 3 This is a schematic diagram of the positioning component in this utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the driving component and the limiting component in this utility model.
[0019] In the diagram: 1. Frame; 2. Welding torch; 3. Drive mechanism; 31. Support frame; 32. Drive assembly; 321. Third motor; 322. Drive roller; 33. Limiting assembly; 331. Limiting clamp; 332. Linkage mechanism; 333. Third cylinder; 334. Limiting roller; 4. Support frame; 41. First motor; 42. First linear guide rail; 43. Second lead screw; 5. Lifting frame; 51. Second motor; 52. First lead screw; 53. Second linear guide rail; 6. Positioning assembly; 61. Fixed positioning clamp; 62. Movable positioning clamp; 621. Swing shaft; 63. First cylinder; 64. Positioning plate; 641. Guide rod; 65. Second cylinder; 66. Positioning roller; 661. Anti-slip pad. Detailed Implementation
[0020] The following will refer to the appendix in the embodiments of this utility model. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0021] As shown in the figure, a stainless steel pipe welding device includes a frame 1, a welding torch 2, and a drive mechanism 3. A support frame 4 is mounted on the frame 1. A lifting frame 5, which is longitudinally slidably mounted on the support frame 4 and is driven by a first motor 41 mounted on the support frame 4, is mounted on the support frame 4. The welding torch 2 is fixedly mounted on the lifting frame 5 with its working nozzle facing downwards. Two positioning components 6 are symmetrically arranged along the welding torch 2 on the lifting frame 5. Each positioning component 6 includes an arc-shaped fixed positioning clamp 61 and a movable positioning clamp 62. The fixed positioning clamp 61 is horizontally slidable on the lifting frame 5 with its opening facing downwards. The movable positioning clamp 62 is connected to a swing shaft 6. 21 is rotatably connected to the end of the fixed positioning hoop 61. The fixed positioning hoop 61 is rotatably provided with a first cylinder 63 that is hinged to the swing shaft 621. The lifting frame 5 is rotatably provided with a first lead screw 52 that is driven by the second motor 51 provided on the lifting frame 5. The two fixed positioning hoops 61 are respectively screwed to two threaded sections with opposite directions on the first lead screw 52. Several positioning rollers 66 are rotatably provided on the inner walls of the fixed positioning hoop 61 and the movable positioning hoop 62. The frame 1 is longitudinally slidably provided with a positioning plate 64 located directly below the welding torch 2 and driven by the second cylinder 65 provided on the frame 1.
[0022] Specifically, the lifting frame 5 is slidably mounted on the support frame 4 and connected to the first motor 41 via a transmission connection: the support frame 4 is provided with two vertical first linear guide rails 42, the lifting frame 5 is fixedly connected to the sliding seat of the first linear guide rails 42, and the support frame 4 is rotatably mounted with a second lead screw 43 screwed to the lifting frame 5 and connected to the first motor 41 via a transmission connection. The first motor 41 drives the first lead screw 52 to rotate, and the first lead screw 52 drives the lifting frame 5 to slide longitudinally on the first linear guide rails 42 through threaded engagement with the lifting frame 5. The first linear guide rails 42 ensure the stability and accuracy of the lifting frame 5 during longitudinal sliding.
[0023] Specifically, the fixed positioning hoop 61 is slidably mounted on the lifting frame 5: the lifting frame 5 is provided with two horizontal second linear guide rails 53, and the fixed positioning hoop 61 is fixedly connected to the sliding seat of the second linear guide rails 53. The second linear guide rails 53 ensure the stability and accuracy of the fixed positioning hoop 61 when sliding horizontally.
[0024] Specifically, the positioning plate 64 is slidably mounted on the frame 1: two vertical guide rods 641 are fixedly mounted on the lower end of the positioning plate 64 and pass through the frame 1. The output shaft of the second cylinder 65 is fixedly connected to the lower end of the positioning plate 64. The guide rods 641 guide the positioning plate 64 when it slides longitudinally, ensuring the stability and accuracy of the positioning plate 64 when it slides longitudinally driven by the second cylinder 65.
[0025] Specifically, the drive mechanism 3 includes a support frame 31 and a drive assembly 32. Several support frames 31 are spaced apart and arranged on the frame 1 on both sides of the positioning plate 64. Two drive assemblies 32 are symmetrically arranged on the frame 1 along the welding gun 2. Each drive assembly 32 includes a third motor 321 and two drive rollers 322. The two drive rollers 322 are rotatably arranged on the frame 1 and symmetrically distributed along the central axis of the support frame 31. The third motor 321 is arranged on the frame 1 and rotatably connected to one of the drive rollers 322.
[0026] In the above embodiment, when welding the stainless steel pipes, two sections of stainless steel pipes are placed on two sets of drive components 32, so that the stainless steel pipes are positioned between two drive rollers 322 and in contact with the drive rollers 322. Then, the two stainless steel pipes are pushed upwards towards the positioning plate 64 between the two stainless steel pipes, driven by the second cylinder 65, until the ends of the two stainless steel pipes abut against the two surfaces of the positioning plate 64. Since the positioning plate 64 is located directly below the welding torch 2, the horizontal distance between the ends of the two stainless steel pipes and the working port of the welding torch 2 is the same, that is, the two stainless steel pipes are symmetrically placed along the welding torch 2. During the process of pushing the stainless steel pipes towards the positioning plate 64, the stainless steel pipes move onto the support frame 31, which has a matching structure with the stainless steel pipes. The arc-shaped groove guides the movement of the stainless steel pipe, allowing it to move accurately along its axial direction and precisely abut against the positioning plate 64, thus aligning the ends of the two stainless steel pipes. Simultaneously, the support frame 31 supports the stainless steel pipe after its end abuts against the positioning plate 64, ensuring its stability. After the stainless steel pipe end abuts against the positioning plate 64, the first motor 41 drives the lifting frame 5 downwards via the second lead screw 43. The lifting frame 5 moves the positioning components 6 towards the stainless steel pipes, causing the positioning rollers 66, arranged in a ring around the center of the fixing positioning clamps 61 of the two positioning components 6, to tightly abut against the two stainless steel pipes. Then, the first cylinder 63 drives the swing shaft 6... 21. The swinging motion causes the movable positioning clamp 62, which is fixedly connected to the swinging shaft 621, to swing towards the fixed positioning clamp 61. This causes several positioning rollers 66 arranged in a ring around the center of the movable positioning clamp 62 to press tightly against the two stainless steel pipes. This allows the fixed positioning clamp 61 and the movable positioning clamp 62 to cooperate and grip the stainless steel pipes. Then, the second cylinder 65 drives the positioning plate 64 to move downwards and exit between the two stainless steel pipes. Next, the second motor 51 drives the first lead screw 52 to rotate. The two threaded sections of the first lead screw 52 with opposite directions drive the two fixed positioning clamps 61 to move towards each other, thereby causing the two stainless steel pipes gripped by the two positioning components 6 to move towards each other and align their ends. Due to the two positioning components 6 and the two... The stainless steel pipes are symmetrically distributed along the welding torch 2. Therefore, when the ends of two stainless steel pipes are aligned, their joint is aligned with the working nozzle of the welding torch 2. This ensures that the working nozzle of the welding torch 2, which moves downwards with the lifting frame 5, is located on one side of the joint between the two stainless steel pipes. Then, the two drive components 32 simultaneously drive the two stainless steel pipes to rotate. This is achieved by two third motors 321 connected to the same controller synchronously driving the drive rollers 322 on the two drive components 32 to rotate. The drive rollers 322, through contact with the stainless steel pipes, drive the two stainless steel pipes to rotate synchronously. While the stainless steel pipes are rotating, the positioning rollers 66 are also rotating, ensuring the fixed-axis rotation of the stainless steel pipes. Simultaneously, the welding torch 2 works in conjunction with the rotation of the stainless steel pipes to perform circumferential welding on the joint between the two stainless steel pipes.The welding operation on the stainless steel pipe is completed. After welding, the movable positioning clamp 62 resets under the drive of the first cylinder 63, and the lifting frame 5 resets under the drive of the first motor 41, allowing the welded stainless steel pipe to be removed. During the welding process, the positioning plate 64 pre-positions the two stainless steel pipes symmetrically on both sides of the welding torch 2. Two positioning components 6, each holding one of the two stainless steel pipes, move the two pipes synchronously, aligning the contact points of the joined ends with the working port of the welding torch 2. This makes aligning the joint between the welding torch 2 and the two stainless steel pipes more convenient, thus facilitating the welding operation, saving manpower, and improving efficiency.
[0027] In addition, based on the above structure, the drive mechanism 3 further includes a limiting component 33. The limiting component 33 includes two limiting clamps 331 that are arc-shaped and symmetrically distributed along the central axis of the support frame 31. The limiting clamps 331 are rotatably mounted on the frame 1, and the two limiting clamps 331 are connected to the third cylinder 333 mounted on the frame 1 via a linkage mechanism 332 to achieve symmetrical movement. Several limiting rollers 334 are rotatably mounted on the limiting clamps 331. Before the stainless steel tube is placed on the two drive rollers 322, the third cylinder 333 drives the two limiting clamps 331 to swing synchronously in opposite directions via the linkage mechanism 332, so that the tube placed on the two drive rollers... The stainless steel tube on 322 can pass between the two limiting clamps 331. After the two positioning components 6 drive the ends of the two stainless steel tubes to align, the third cylinder 333 drives the two limiting clamps 331 to swing synchronously towards each other, so that a number of limiting rollers 334 arranged in a ring along the center of the limiting clamps 331 press tightly against the stainless steel tube, and apply radial limiting to the end of the stainless steel tube away from the welding torch 2, so as to ensure that the stainless steel tube and the drive roller 322 keep in contact and ensure the stability of the drive roller 322 when driving the stainless steel tube to rotate. At the same time, the limiting rollers 334 also ensure the fixed axis rotation of the stainless steel tube by rotating with the stainless steel tube, thereby ensuring the welding accuracy.
[0028] In addition, based on the above structure, the positioning roller 66 is fitted with an anti-slip pad 661 on its circumferential surface. The anti-slip pad 661 increases the friction between the positioning roller 66 and the stainless steel pipe after they come into contact, thereby ensuring that the positioning component 6 can drive the stainless steel pipe to move axially, and thus ensuring that the joint after the ends of the two stainless steel pipes are joined is accurately aligned with the working port of the welding gun 2.
[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A stainless steel pipe welding device, comprising a frame (1), a welding torch (2), and a drive mechanism (3), characterized in that: A support frame (4) is provided on the frame (1). A lifting frame (5) is longitudinally slidably provided on the support frame (4) and is drivenly connected to a first motor (41) provided on the support frame (4). The welding torch (2) is fixedly provided on the lifting frame (5) with the working port of the welding torch (2) facing downward. Two positioning components (6) are symmetrically provided on the lifting frame (5) along the welding torch (2). The positioning components (6) include an arc-shaped fixed positioning hoop (61) and a movable positioning hoop (62). The fixed positioning hoop (61) is horizontally slidably provided on the lifting frame (5) with its opening facing downward. The movable positioning hoop (62) is rotatably connected to the fixed positioning hoop (61) via a swing shaft (621). At the end of the fixed positioning hoop (61), a first cylinder (63) is rotatably mounted on the fixed positioning hoop (61) and hinged to the swing shaft (621). A first lead screw (52) is rotatably mounted on the lifting frame (5) and driven by the second motor (51) mounted on the lifting frame (5). The two fixed positioning hoops (61) are respectively screwed onto the two threaded sections with opposite directions on the first lead screw (52). Several positioning rollers (66) are rotatably mounted on the inner walls of the fixed positioning hoop (61) and the movable positioning hoop (62). A positioning plate (64) located directly below the welding torch (2) and driven by the second cylinder (65) mounted on the frame (1) is slidably mounted on the frame (1).
2. The stainless steel pipe welding device according to claim 1, characterized in that: The support frame (4) is provided with two vertical first linear guide rails (42), the lifting frame (5) is fixedly connected to the sliding seat of the first linear guide rails (42), and the support frame (4) is rotatably provided with a second lead screw (43) screwed to the lifting frame (5) and connected to the first motor (41) for transmission.
3. The stainless steel pipe welding device according to claim 2, characterized in that: The lifting frame (5) is provided with two horizontal second linear guide rails (53), and the fixed positioning hoop (61) is fixedly connected to the sliding seat of the second linear guide rail (53).
4. The stainless steel pipe welding apparatus according to claim 3, characterized in that: The lower end of the positioning plate (64) is fixedly provided with two vertical guide rods (641) that pass through the frame (1), and the output shaft of the second cylinder (65) is fixedly connected to the lower end of the positioning plate (64).
5. The stainless steel pipe welding apparatus according to claim 4, characterized in that: The drive mechanism (3) includes a support frame (31) and a drive assembly (32). Several support frames (31) are spaced apart and arranged on the frame (1) on both sides of the positioning plate (64). Two drive assemblies (32) are symmetrically arranged on the frame (1) along the welding gun (2). Each drive assembly (32) includes a third motor (321) and two drive rollers (322). The two drive rollers (322) are rotatably arranged on the frame (1) and symmetrically distributed along the central axis of the support frame (31). The third motor (321) is arranged on the frame (1) and rotatably connected to one of the drive rollers (322).
6. The stainless steel pipe welding apparatus according to claim 5, characterized in that: The drive mechanism (3) also includes a limiting component (33), which includes two limiting hoops (331) that are arc-shaped and symmetrically distributed along the central axis of the support frame (31). The limiting hoops (331) are rotatably mounted on the frame (1), and the two limiting hoops (331) are connected to the third cylinder (333) mounted on the frame (1) through a linkage mechanism to achieve symmetrical movement. Several limiting rollers (334) are rotatably mounted on the limiting hoops (331).
7. The stainless steel pipe welding apparatus according to claim 6, characterized in that: The positioning roller (66) is fitted with an anti-slip pad (661) on its circumferential surface.