Welding device suitable for guide pipe with wall thickness smaller than 1 mm

Abstract

The utility model relates to the technical field of welding clamps, in particular to a welding device suitable for a guide pipe with the wall thickness smaller than 1 mm. Comprising a base, a stand column is vertically arranged on the upper side of the base, a tensioning column is installed at the upper end of the stand column, a driving cavity is vertically formed in the tensioning column, a plurality of strip holes communicating with the driving cavity are vertically formed around the outer wall of the tensioning column, and inner supporting strips are arranged in the strip holes in a sliding mode; a driving structure used for driving the inner supporting strips to move outwards along the strip holes is arranged in the driving cavity. During welding, one section of guide pipe is arranged on the stand column in a sleeving mode, a welding opening is located at the position of the tensioning column, the other guide pipe is arranged in the tensioning column in a sleeving mode from the upper portion, the welding openings of the two guide pipes are aligned at the positions of the tensioning column, and then the driving structure drives the inner supporting strips on the tensioning column to move outwards to be attached to the inner walls of the guide pipes. In this way, the inner wall of the catheter can be evenly supported through the multiple inner supporting strips, and therefore the situation that the catheter is deformed in the catheter fixing process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of welding fixtures, in particular to a welding device suitable for conduit with a wall thickness of less than 1mm. Background Art

[0002] Welding, also known as fusion, is a manufacturing process and technology that joins metals or other thermoplastic materials by heating, high temperature or high pressure. There are many sources of energy for modern welding, including gas flame, arc, laser, electron beam, friction and ultrasonic.

[0003] In the welding process, including the welding process of the conduit, two conduits or a conduit and a tubular workpiece such as a flange are welded. Before welding, the two conduits need to be aligned, and during the welding process, the two conduits also need to be kept aligned. In the prior art, a clamping method is usually used, in which two conduits are clamped by two clamps to align the two conduits, and then the gap between the two conduits is welded.

[0004] Based on the above-mentioned prior art, when a clamp is used to clamp the catheter for welding, the catheter can only be clamped from the outside. For a thicker catheter, the catheter can withstand the force generated when the clamp is clamped. However, for a catheter below 1 mm, since the wall of the catheter is very thin, a slightly larger force will cause the wall to dent. Therefore, when the conventional external clamping method in the prior art is used to clamp such thin-walled catheters for welding, it is easy to cause the catheter wall to dent during the clamping process, thereby affecting the quality of the final product. Utility Model Content

[0005] The purpose of the utility model is to provide a catheter welding device suitable for a catheter with a wall thickness of less than 1 mm, so as to solve the problem in the prior art that when a catheter with a wall thickness of less than 1 mm is welded by a clamping and fixing method, the wall of the catheter is easily dented during the clamping process, thereby affecting the quality of the final product.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The cam is provided with a plurality of holes connected with the driving cavity, and the plurality of inner support bars are slidably arranged in the plurality of holes. The plurality of inner support bars are slidably arranged in the plurality of holes. The driving cavity is provided with a sliding column. An air hole that passes through the upper and lower ends is vertically arranged in the column. The lower end of the driving cavity is connected with the upper end of the air hole through the sliding hole, and the lower end of the air hole is connected with an external air supply module through an air pipe. The lower part of the sliding column is slidably arranged in the sliding hole, and the upper end of the sliding column is placed in the driving cavity. A plurality of pushing blocks are arranged on the side surface surrounding the sliding column, and the outer side of the pushing block is arranged as a first inclined surface inclined outward from top to bottom, and the inner sides of the plurality of inner support bars are arranged with grooves. The upper groove wall of the groove is arranged as a second inclined surface matching the first inclined surface, and the outer end of the pushing block is placed in the groove.

[0008] A further technical solution is that both ends of the inner support bar are provided with reset grooves, and reset blocks are provided in the reset grooves. One end of the reset block passes through the reset groove and is connected to the hole wall of the bar hole. A reset spring is provided on the side of the reset block facing the driving cavity, and the other end of the reset spring away from the reset block is connected to the groove wall of the reset groove facing the driving cavity.

[0009] A further technical solution is that the inner wall of the upper end of the air hole is provided with a first thread, the lower end of the tensioning column is provided with a connecting ring around the sliding hole, and the outer wall around the connecting ring is provided with a second thread matching the first thread.

[0010] A further technical solution is that a horizontally arranged mounting plate is installed above the base through a vertical plate, an annular hole is arranged on the mounting plate which passes through the upper and lower sides, the upper end of the column passes through the annular hole, a sliding plate is slidingly arranged around the hole wall of the annular hole, a processing plate is installed on the upper side of the sliding plate above the mounting plate through a vertical rod, and a welding module is installed on the processing plate.

[0011] A further technical solution is that a guide rail groove is arranged around the hole wall of the annular hole, and a guide bar matching the guide rail groove is arranged on the side of the sliding plate. When the sliding plate is slidably arranged on the hole wall of the annular hole, the guide bar and the guide rail groove are slidably connected.

[0012] A further technical solution is that a third thread is arranged around the outer wall of the column, an adjustment ring is sleeved on the outer wall of the column, and a fourth thread matching the third thread is arranged on the inner wall of the adjustment ring.

[0013] Compared with the prior art, the utility model has at least one of the following beneficial effects: 1. During welding, a section of conduit is put on the column, the welding port is located at the position of the tensioning column, and another conduit is put into the tensioning column from above, so that the welding ports of the two conduits are aligned at the position of the tensioning column, and then the inner support bar on the tensioning column is driven to move outward by the sliding column to fit the inner wall of the conduit, so that the inner wall of the conduit can be evenly supported by multiple inner support bars, thereby avoiding deformation of the conduit during the process of fixing the conduit; 2. Through the cooperation of multiple inner support bars, the welding points of the two conduits can also be accurately aligned to avoid welding failure caused by misalignment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is an overall schematic diagram of a catheter welding device suitable for a catheter with a wall thickness of less than 1 mm.

[0015] Figure 2 The utility model is a structural schematic diagram of a catheter welding device suitable for a catheter with a wall thickness of less than 1 mm.

[0016] Figure 3 The utility model is a schematic structural side view of a catheter welding device suitable for a catheter with a wall thickness of less than 1 mm.

[0017] Figure 4 for Figure 3 A partial enlarged schematic diagram of the area marked A in the middle.

[0018] Figure 5 The utility model is a horizontal cross-sectional schematic diagram of a tensioning column of a catheter welding device suitable for a catheter with a wall thickness of less than 1 mm.

[0019] Icon: 1-base, 2-column, 3-tensioning column, 4-driving chamber, 5-bar hole, 6-inner support bar, 7-sliding column, 8-air hole, 9-sliding hole, 10-pushing block, 11-first inclined plane, 12-groove, 13-second inclined plane, 14-reset groove, 15-reset block, 16-reset spring, 17-connecting ring, 18-mounting plate, 19-annular hole, 20-vertical plate, 21-sliding plate, 22-vertical pole, 23-processing plate, 24-welding module, 25-guide groove, 27-third thread, 28-adjusting ring. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] Figures 1 to 5 Shown is an embodiment of the utility model.

[0022] Embodiment 1:

[0023] A catheter welding device suitable for wall thickness of less than 1mm, comprising a base 1, a column 2 is vertically arranged on the upper side of the base 1, a tension column 3 is installed on the upper end of the column 2, a driving cavity 4 is vertically arranged in the tension column 3, a plurality of strip holes 5 connected to the driving cavity 4 are vertically arranged on the outer wall surrounding the tension column 3, an inner support bar 6 is slidably arranged in the plurality of strip holes 5, a sliding column 7 is arranged in the driving cavity 4, an air hole 8 penetrating the upper and lower ends is vertically arranged in the column 2, and the lower end of the driving cavity 4 is connected to the upper end of the air hole 8 through the sliding hole 9 and the upper end of the air hole 8. The ends are connected, and the lower end of the air hole 8 is connected to the external air supply module through the air pipe; the lower part of the sliding column 7 is slidably arranged in the sliding hole 9, and the upper end of the sliding column 7 is placed in the driving cavity 4. A plurality of push blocks 10 are arranged around the side of the sliding column 7, and the outer side of the push block 10 is arranged as a first inclined surface 11 inclined outward from top to bottom, and the inner side of the plurality of inner support bars 6 are all provided with grooves 12, and the upper groove wall of the groove 12 is all arranged as a second inclined surface 13 matching the first inclined surface 11, and the outer end of the push block 10 is placed in the groove 12. When welding, a section of the catheter is sleeved on the column 2, and the welding port is located at the position of the tensioning column 3. Another catheter is sleeved into the tensioning column 3 from above, so that the welding ports of the two catheters are aligned at the position of the tensioning column 3, and then the inner support bar 6 on the tensioning column 3 is driven by the driving structure to move outward to fit the inner wall of the catheter, so that the inner wall of the catheter can be evenly supported by multiple inner support bars 6, thereby avoiding deformation of the catheter during the process of fixing the catheter.

[0024] When using the device for welding, when the two catheters are aligned at the position of the tensioning column 3, the air supply module is started to inflate the air hole 8. The increased air pressure in the air hole 8 will push the sliding column 7 to move toward the driving cavity 4. During the movement, with the help of the first inclined surface 11 and the second inclined surface 13, the inner support bar 6 will be pushed to move outward in the bar hole 5, so that the outer side of the inner support bar 6 and the inner wall of the catheter are in contact and fit, so that the two catheters can be fixed and the interfaces of the two catheters can be perfectly aligned to avoid misalignment.

[0025] Both ends of the inner support bar 6 are provided with a reset groove 14, and a reset block 15 is provided in the reset groove 14. One end of the reset block 15 passes through the reset groove 14 and is connected to the hole wall of the bar hole 5. A reset spring 16 is provided on the side of the reset block 15 facing the driving chamber 4, and the other end of the reset spring 16 away from the reset block 15 is connected to the groove wall of the reset groove 14 facing the driving chamber 4. After the welding is completed, the integral conduit needs to be removed from the column 2. Before removing, the air in the air hole 8 is extracted through the external air supply module, so that the air pressure in the air hole 8 drops, and the sliding column 7 will move toward the air hole 8. At this time, with the cooperation of the reset spring 16 and the reset block 15, the inner support bar 6 is pushed to move toward the driving chamber 4, so that the inner support bar 6 will not press against the inner wall of the conduit, so that the operator can remove the conduit from the column 2 after welding.

[0026] The inner wall at the upper end of the air hole 8 is provided with a first thread, the lower end of the tensioning column 3 is provided with a connecting ring 17 around the sliding hole 9, and the outer wall around the connecting ring 17 is provided with a second thread matching the first thread. By providing the connecting ring 17, it is convenient to install the tensioning column 3 to the upper end of the column 2, and to remove the tensioning column 3 from the upper end of the column 2. Although various sizes of catheters can be used with the help of the distance moved outward by the inner support bar 6, such matching also has a size range. When the size range is exceeded, it is necessary to replace a different tensioning column 3 to fix the catheter. The first thread and the second thread can quickly remove and install the tensioning column 3, and can also provide good sealing.

[0027] Embodiment 2:

[0028] On the basis of Example 1, a horizontally arranged mounting plate 18 is installed above the base 1 through a vertical plate 20, and an annular hole 19 is arranged on the mounting plate 18, and the upper end of the column 2 passes through the annular hole 19, and a sliding plate 21 is arranged to slide around the hole wall of the annular hole 19, and a processing plate 23 is installed on the upper side of the sliding plate 21 through a vertical rod 22 above the mounting plate 18, and a welding module 24 is installed on the processing plate 23. By setting the column 2 and the internal support type tensioning module, when welding, one tube body is sleeved on the column 2, and the upper end is placed at the position of the internal support type tensioning module, and the other tube body is sleeved at the position of the internal support type tensioning module and aligned with the lower tube body, and then the alignment of the two tube bodies is fixed by the internal support type tensioning module, so that the two tube bodies are fixed from the inside of the two tube bodies, and the surrounding fixing device is prevented from affecting the welding operation. The processing plate 23 is rotated around the hole wall of the annular hole 19 by the sliding plate 21, and the welding module 24 installed on the processing plate 23 can follow the movement, so as to weld around the connection of the two tube bodies. The welding module 24 can use any welding gun according to needs, such as an arc welding gun. During welding, the worker turns on the switch of the welding gun, and then pushes the processing plate 23 to start moving around the hole wall of the annular hole 19 to perform welding.

[0029] A guide groove 25 is provided around the hole wall of the annular hole 19, and a guide bar matching the guide groove 25 is provided on the side of the sliding plate 21. When the sliding plate 21 is slidably arranged on the hole wall of the annular hole 19, the guide bar and the guide groove 25 are slidably connected. By providing the guide groove 25 and the guide bar, the sliding plate 21 can slide smoothly along the hole wall of the annular hole 19. This facilitates the welding module 24 to weld the connection between the two pipe bodies.

[0030] A third thread 27 is provided around the outer wall of the column 2, an adjusting ring 28 is sleeved on the outer wall of the column 2, and a fourth thread matching the third thread 27 is provided on the inner wall of the adjusting ring 28. Since the lengths of the tubes of different models or specifications are different, in order to accurately align the upper end of the tube with the tensioning column 3, so that the connection between the two tubes is located at the position of the tensioning column 3, the adjusting ring 28 is moved up and down on the column 2 by means of the third thread 27 and the fourth thread, thereby adjusting the height of the tube sleeved on the column 2.

[0031] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to the modifications and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A conduit welding device suitable for a conduit with a wall thickness of less than 1 mm, comprising a base (1), characterized in that: A column (2) is vertically arranged on the upper side of the base (1), a tension column (3) is installed on the upper end of the column (2), a driving cavity (4) is vertically arranged in the tension column (3), a plurality of strip holes (5) connected to the driving cavity (4) are vertically arranged around the outer wall of the tension column (3), and internal support bars (6) are slidably arranged in the plurality of strip holes (5), a sliding column (7) is arranged in the driving cavity (4), and an air hole (8) penetrating the upper and lower ends is vertically arranged in the column (2), the lower end of the driving cavity (4) is connected to the upper end of the air hole (8) through the sliding hole (9), and the air hole (8) is The lower end is connected to an external air supply module through an air pipe; the lower part of the sliding column (7) is slidably arranged in the sliding hole (9), the upper end of the sliding column (7) is placed in the driving cavity (4), and a plurality of pushing blocks (10) are arranged around the side of the sliding column (7), the outer side of the pushing block (10) is arranged as a first inclined surface (11) inclined outward from top to bottom, the inner sides of the plurality of inner support bars (6) are all arranged with grooves (12), the upper groove walls of the grooves (12) are all arranged as a second inclined surface (13) matching the first inclined surface (11), and the outer end of the pushing block (10) is placed in the groove (12).

2. A catheter welding device suitable for a wall thickness of less than 1 mm according to claim 1, characterized in that: Both ends of the inner support bar (6) are provided with a reset groove (14), and a reset block (15) is provided in each of the reset grooves (14). One end of the reset block (15) passes through the reset groove (14) and is connected to the hole wall of the bar hole (5). A reset spring (16) is provided on the side of the reset block (15) facing the drive cavity (4), and the other end of the reset spring (16) away from the reset block (15) is connected to the groove wall of the reset groove (14) on the side facing the drive cavity (4).

3. A catheter welding device suitable for a wall thickness of less than 1 mm according to claim 1, characterized in that: The inner wall of the upper end of the air hole (8) is provided with a first thread, the lower end of the tensioning column (3) is provided with a connecting ring (17) surrounding the sliding hole (9), and the outer wall surrounding the connecting ring (17) is provided with a second thread matching the first thread.

4. A catheter welding device suitable for a catheter with a wall thickness of less than 1 mm according to claim 1, characterized in that: A horizontally arranged mounting plate (18) is installed above the base (1) through a vertical plate (20); an annular hole (19) is provided on the mounting plate (18) and passes through the upper and lower sides; the upper end of the column (2) passes through the annular hole (19); a sliding plate (21) is slidably arranged around the hole wall of the annular hole (19); a processing plate (23) is installed on the upper side of the sliding plate (21) above the mounting plate (18) through a vertical rod (22); and a welding module (24) is installed on the processing plate (23).

5. A catheter welding device suitable for a catheter with a wall thickness of less than 1 mm according to claim 4, characterized in that: A guide rail groove (25) is arranged on the hole wall surrounding the annular hole (19), and a guide rail bar matching the guide rail groove (25) is arranged on the side of the sliding plate (21); when the sliding plate (21) is slidably arranged on the hole wall of the annular hole (19), the guide rail bar and the guide rail groove (25) are slidably connected.

6. A catheter welding device suitable for a catheter with a wall thickness of less than 1 mm according to claim 1, characterized in that: A third thread (27) is arranged around the outer wall of the column (2), an adjustment ring (28) is sleeved on the outer wall of the column (2), and a fourth thread matching the third thread (27) is arranged on the inner wall of the adjustment ring (28).

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