A fixture for welding the inner wall of a pipe

Abstract

The utility model relates to the technical field of pipe processing, and disclose a kind of clamp for pipe inner wall welding.The kind of clamp for pipe inner wall welding, including first fixture plate, the both ends of first fixture plate are provided with locating plate, and the side of first fixture plate is provided with second fixture plate, and the inner wall of first fixture plate is welded with support plate.The utility model is by being provided with first fixture plate, second fixture plate, locating plate and support plate, and U-shaped clamping plate is clamped in the inner side of first fixture plate and second fixture plate by support plate, and first fixture plate and second fixture plate are fixed by locating plate, fixed insertion pipe body, start to carry out point to work, after welding, first fixture plate and second fixture plate can be disassembled, first fixture plate and second fixture plate are clamped to U-shaped clamping plate, so that it can be accurately welded in the inner wall of pipe body, and the effect of welding is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe processing technology, specifically a clamp for welding the inner wall of pipes. Background Technology

[0002] Pipes are materials used to make pipe fittings, including polyethylene pipes, metal pipes, etc. Pipes need to be processed before they can be used. Some metal pipes require welded parts on their inner walls, such as U-shaped clamps.

[0003] However, due to the inability to position the welding fixture within the confined space of the pipe, the welding operation cannot be performed correctly, resulting in slow point-to-point efficiency. Therefore, there is an urgent need for a fixture for welding the inner wall of pipes. Utility Model Content

[0004] The purpose of this utility model is to provide a clamp for welding the inner wall of pipes, so as to solve the problem mentioned in the background art that it is impossible to position the clamp in the narrow space of the pipe, which makes the welding operation incorrect and the point-to-point efficiency slow.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a clamp for welding the inner wall of a pipe, including a first clamp plate, positioning plates at both ends of the first clamp plate, and a second clamp plate on one side of the first clamp plate. A support plate is welded to the inner wall of the first clamp plate, and a fixing insert is movably disposed on the inner side of the second clamp plate. A positioning ring is sleeved on the outer wall of the fixing insert, and a clamping block is fixed at the end of the fixing insert. A spring ring is disposed at the end of the positioning ring, and a movable through groove is opened on the inner side of the positioning ring.

[0006] Preferably, the first clamping plate and the second clamping plate are provided with slots, the number of support plates is two sets, and one end of the support plate is engaged with a U-shaped clamping plate.

[0007] Preferably, the first clamp plate and the second clamp plate are connected by a positioning plate, a fixing plug and a positioning ring, and the outer side of the first clamp plate and the second clamp plate is provided with the main body of the pipe.

[0008] Preferably, the U-shaped clamping plate is engaged with the first clamping plate and the second clamping plate through a support plate, and the number of slots is two sets.

[0009] Preferably, the positioning plate has through holes that match the fixed insert, and the movable through slot is engaged with the clamping block.

[0010] Preferably, the positioning ring and the fixed insert are fixed by clamping block and movable through slot, and the spring ring is attached to the surface of the positioning plate.

[0011] Preferably, the outer walls of the positioning ring and the fixing insert are both connected to chains, and the ends of the chains are fixed to the positioning plate.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0013] First, this utility model sets up a first clamping plate, a second clamping plate, a positioning plate, and a support plate. The U-shaped clamping plate is clamped to the inner side of the first clamping plate and the second clamping plate by the support plate. The first clamping plate and the second clamping plate are fixed by the positioning plate, the fixing plug, and the positioning ring. After fixing, they are inserted into the pipe body to start the point-to-point welding. After welding, the first clamping plate and the second clamping plate can be removed. The clamping of the U-shaped clamping plate by the first clamping plate and the second clamping plate allows it to be accurately welded to the inner wall of the pipe body, while improving the welding effect.

[0014] Secondly, this utility model, by setting a positioning ring, a fixed insert, a clamping block, a movable through groove, and a spring ring, allows for easy disassembly of the fixed insert. When the fixed insert needs to be disassembled, simply push the positioning ring to one end. The positioning ring, under pressure, compresses the spring ring at its end, causing it to move backward and separate from the clamping block at the end of the fixed insert. Then, rotate the positioning ring so that the two movable through grooves on its inner side align with the clamping block. Next, pull the positioning ring outward, allowing the movable through grooves on the inner side of the positioning ring to pass through the clamping block, thus separating the positioning ring from the fixed insert. Finally, the fixed insert can be pulled out of the positioning plate, facilitating the rapid disassembly of the first clamping plate and the second clamping plate from the U-shaped clamping plate, simplifying the disassembly process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a top view of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the support plate structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the positioning plate structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the positioning ring structure of this utility model.

[0020] The components are: 1. First clamping plate; 2. Second clamping plate; 3. Positioning plate; 4. Support plate; 5. U-shaped clamping plate; 6. Groove; 7. Fixed insert; 8. Clamping block; 9. Positioning ring; 10. Movable through groove; 11. Spring ring; 12. Chain; 13. Pipe body. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-3 A clamp for welding the inner wall of a pipe includes a first clamp plate 1, with positioning plates 3 at both ends and a second clamp plate 2 on one side. A support plate 4 is welded to the inner wall of the first clamp plate 1, and a fixing insert 7 is movably disposed on the inner side of the second clamp plate 2. The first clamp plate 1 and the second clamp plate 2 have slots 6. There are two sets of support plates 4, and one end of each support plate 4 is engaged with a U-shaped clamping plate 5. The first clamp plate 1 and the second clamp plate 2 are connected by the positioning plates 3, the fixing insert 7, and the positioning ring 9. A pipe body 13 is disposed on the outer side of the first clamp plate 1 and the second clamp plate 2. The U-shaped clamping plate 5 is engaged with the first clamp plate 1 and the second clamp plate 2 by the support plates 4. There are two sets of slots 6. During the operation, the U-shaped clamping plate 5 is first clamped onto the first clamping plate 1 by the support plate 4 and passes through the inside of the pipe body 13. Then, the other side of the U-shaped clamping plate 5 is fixed to the second clamping plate 2 by the support plate 4. Then, the two ends of the first clamping plate 1 and the second clamping plate 2 are fixed by the positioning plate 3, the fixing plug 7 and the positioning ring 9, so that the slot 6 is parallel to the pipe body 13. Point-to-point welding is then started. After the argon arc welding point is completed, the fixing plug 7 is removed from the positioning plate 3, and the first clamping plate 1, the second clamping plate 2 and the U-shaped clamping plate 5 are separated. The U-shaped clamping plate 5 is then welded and fixed to the inner wall of the pipe body 13. The first clamping plate 1 and the second clamping plate 2 clamp the U-shaped clamping plate 5, so that it can be accurately welded to the inner wall of the pipe body 13, while improving the welding effect.

[0023] Please see Figures 4-5A clamp for welding the inner wall of a pipe is disclosed. A positioning ring 9 is fitted onto the outer wall of a fixed insert 7, and a clamping block 8 is fixed to the end of the fixed insert 7. A spring coil 11 is provided at the end of the positioning ring 9, and a movable through-hole 10 is formed on the inner side of the positioning ring 9. A through-hole matching the fixed insert 7 is formed on a positioning plate 3. The movable through-hole 10 engages with the clamping block 8. The positioning ring 9 and the fixed insert 7 are fixed by the clamping block 8 and the movable through-hole 10. The spring coil 11 is attached to the surface of the positioning plate 3. Chains 12 are connected to the outer walls of both the positioning ring 9 and the fixed insert 7, and the ends of the chains 12 are fixed to the positioning plate 3. When the fixed insert 7 needs to be disassembled, simply push the positioning ring 9 to one end. After the positioning ring 9 is subjected to force, the spring ring 11 at the end of the positioning ring 9 is pushed backward and separates from the clamping block 8 at the end of the fixed insert 7 during the backward movement. Then rotate the positioning ring 9 so that the two movable through slots 10 on its inner side are aligned with the clamping block 8. Then pull the positioning ring 9 outward so that the movable through slots 10 on the inner side of the positioning ring 9 pass through the clamping block 8. The positioning ring 9 can then be separated from the fixed insert 7. Finally, the fixed insert 7 can be pulled out from the positioning plate 3, which will cause the first clamping plate 1 and the second clamping plate 2 to be quickly disassembled from the U-shaped clamping plate 5, simplifying the disassembly steps.

[0024] In actual production, the U-shaped clamping plate 5 is first secured to the first clamping plate 1 via the support plate 4, passing through the inside of the pipe body 13. The other side of the U-shaped clamping plate 5 is then fixed to the second clamping plate 2 via the support plate 4. The two ends of the first clamping plate 1 and the second clamping plate 2 are then fixed by the positioning plate 3, the fixing insert 7, and the positioning ring 9, ensuring that the groove 6 is parallel to the pipe body 13. Point-to-point welding begins. After the argon arc welding is completed, the fixing insert 7 is removed from the positioning plate 3, and the first clamping plate 1, the second clamping plate 2, and the U-shaped clamping plate 5 are separated. The U-shaped clamping plate 5 is then welded and fixed to the inner wall of the pipe body 13. The first clamping plate 1 and the second clamping plate 2 are positioned relative to the U-shaped clamping plate 5. The clamping mechanism allows for precise welding to the inner wall of the pipe body 13, improving the welding effect. When the fixed plug 7 needs to be disassembled, simply push the positioning ring 9 to one end. After the positioning ring 9 is subjected to force, the spring ring 11 at the end of the positioning ring 9 is pushed backward and separates from the clamping block 8 at the end of the fixed plug 7 during the backward movement. Then, rotate the positioning ring 9 so that the two movable through slots 10 on its inner side are aligned with the clamping block 8. Then, pull the positioning ring 9 outward so that the movable through slots 10 on the inner side of the positioning ring 9 pass through the clamping block 8, thus separating the positioning ring 9 from the fixed plug 7. Finally, the fixed plug 7 can be pulled out from the positioning plate 3, which facilitates the quick disassembly of the first clamping plate 1, the second clamping plate 2, and the U-shaped clamping plate 5, simplifying the disassembly steps.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clamp for welding the inner wall of a pipe, comprising a first clamp plate (1), characterized in that: The first clamping plate (1) is provided with positioning plates (3) at both ends, and a second clamping plate (2) is provided on one side of the first clamping plate (1). A support plate (4) is welded to the inner wall of the first clamping plate (1). A fixing insert (7) is movably provided on the inner side of the second clamping plate (2). A positioning ring (9) is sleeved on the outer wall of the fixing insert (7), and a clamping block (8) is fixed at the end of the fixing insert (7). A spring ring (11) is provided at the end of the positioning ring (9), and a movable through groove (10) is opened on the inner side of the positioning ring (9).

2. The fixture for welding the inner wall of a pipe according to claim 1, characterized in that: The first clamp plate (1) and the second clamp plate (2) are provided with slots (6), and the number of the support plates (4) is two sets, and one end of the support plate (4) is engaged with a U-shaped clamp plate (5).

3. The fixture for welding the inner wall of a pipe according to claim 1, characterized in that: The first clamp plate (1) and the second clamp plate (2) are connected by a positioning plate (3), a fixing plug (7) and a positioning ring (9), and the outer side of the first clamp plate (1) and the second clamp plate (2) is provided with a pipe body (13).

4. A fixture for welding the inner wall of a pipe according to claim 2, characterized in that: The U-shaped clamp plate (5) is engaged with the first clamp plate (1) and the second clamp plate (2) through the support plate (4), and the number of slots (6) is two sets.

5. A clamp for welding the inner wall of a pipe according to claim 1, characterized in that: The positioning plate (3) has a through hole that matches the fixed plug (7), and the movable through slot (10) is engaged with the clamping block (8).

6. A clamp for welding the inner wall of a pipe according to claim 1, characterized in that: The positioning ring (9) and the fixed plug (7) are engaged and fixed by the clamping block (8) and the movable through slot (10), and the spring ring (11) is attached to the surface of the positioning plate (3).

7. A fixture for welding the inner wall of a pipe according to claim 1, characterized in that: The outer walls of the positioning ring (9) and the fixing plug (7) are connected to chains (12), and the ends of the chains (12) are fixed on the positioning plate (3).

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