Automatic welding and positioning clamp for metal pipe

Abstract

The utility model provides an automatic welding positioning fixture for metal tubes, which relates to the field of metal tube welding and comprises a positioning tube sleeve and an arc-shaped pressing plate, a metal tube penetrates through the inner side of the positioning tube sleeve, the side end of the positioning tube sleeve is connected with the arc-shaped pressing plate through a connecting block, and the outer surface of the positioning tube sleeve is sleeved with a protective cover. An adjusting gear is installed on the outer pipe face of the positioning pipe sleeve, the front side and the rear side of the adjusting gear are connected with a first transmission gear and a second transmission gear in a meshed mode respectively, the first transmission gear and the second transmission gear are connected with the inner side wall of the protective cover through rotating shafts, and the right end of the first transmission gear is connected with a stepping motor through a rotating shaft. The problem that in the prior art, an assembly clamp is difficult to rotate to adjust the automatic welding position of the metal pipe is solved.

Description

Technical Field

[0001] The utility model relates to the field of metal pipe welding, in particular to an automatic welding positioning fixture for metal pipes. Background Art

[0002] Metal pipes are an important raw material for various mechanical products, building structures and pipeline transportation. Metal pipes are basically used to transport liquid and gaseous substances. Therefore, the sealing performance requirements of their joints are very high. Once a leak occurs, it will cause waste at the least and may endanger personal and property safety at the worst. After searching, the prior art (application number: CN202320472490.X) records that "this kind of metal pipe mechanical assembly fixture, through the combination of a fixing device and a clamping device, increases the structure of the current common metal pipe mechanical assembly fixture, making it more functional. When clamping different metal pipes, it is no longer necessary to replace different types of clamps back and forth, which is more convenient and quick to use, and reduces the loss of the clamp, which invisibly reduces the cost of mechanical assembly of metal pipes, and is convenient for large-scale promotion and use." However, the assembly fixture in the prior art is difficult to rotate and adjust the automatic welding position of the metal pipe. Utility Model Content

[0003] In order to overcome the defects of the prior art, a metal pipe automatic welding positioning fixture is provided to solve the problem that the assembly fixture in the prior art is difficult to rotate and adjust the automatic welding position of the metal pipe.

[0004] To achieve the above purpose, a metal pipe automatic welding positioning fixture is provided, comprising: a positioning sleeve and an arc-shaped pressing plate, wherein a metal pipe runs through the inner side of the positioning sleeve, and a side end of the positioning sleeve is connected to the arc-shaped pressing plate through a connecting block.

[0005] A protective cover is sleeved on the outer surface of the positioning sleeve, and an adjusting gear is installed on the outer tube surface of the positioning sleeve. The front and rear sides of the adjusting gear are respectively meshed and connected with a first transmission gear and a second transmission gear. The first transmission gear and the second transmission gear are connected to the inner wall of the protective cover through a rotating shaft, and the right end of the first transmission gear is connected to a stepping motor through a rotating shaft.

[0006] Furthermore, a positioning cavity is provided inside the positioning tube sleeve; and the metal tube is located in the positioning cavity, and the lower end of the protective cover is connected to the welding table through a driving bracket.

[0007] Furthermore, a motor box is welded to the right end of the protective cover; and the stepper motor is installed inside the motor box, and an oil filling hole is opened on the upper end surface of the protective cover.

[0008] Furthermore, connecting blocks are welded to the left and right side ends of the positioning sleeve, an electric push rod is embedded and installed inside the connecting block, and the head of the electric push rod is connected to an arc-shaped pressure plate.

[0009] Furthermore, two groups of arc-shaped pressing plates are symmetrically distributed up and down on the right side of the positioning sleeve; and two groups of arc-shaped pressing plates are symmetrically distributed front and back on the left side of the positioning sleeve.

[0010] Furthermore, one side surface of the arc-shaped pressing plate is in the shape of an inwardly concave arc surface; and a non-slip rubber pad is bonded to the arc surface of the arc-shaped pressing plate.

[0011] Furthermore, the protective cover, the adjusting gear, the first transmission gear, the second transmission gear, the rotating shaft and the stepping motor constitute a rotation adjusting mechanism for the positioning sleeve.

[0012] The beneficial effect of the utility model is that the automatic welding positioning fixture of the metal pipe of the utility model utilizes the adjusting gear fixed on the outer surface of the positioning pipe sleeve, and drives the transmission gear and the adjusting gear to mesh and rotate through a stepping motor, so that the metal pipe clamped in the positioning pipe sleeve rotates at a uniform speed, thereby automatically adjusting the welding position of the pipe fitting, realizing a welding positioning fixture with automatic adjustment function, effectively rotating and adjusting the weld position of the metal pipe, enhancing the practical effect of the welding positioning fixture, and improving the efficiency of automatic welding of metal pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the metal pipe automatic welding positioning fixture according to an embodiment of the utility model.

[0014] Figure 2 It is a schematic diagram of the front cross-sectional structure of the metal pipe automatic welding positioning fixture according to an embodiment of the utility model.

[0015] Figure 3 It is a schematic diagram of the side cross-sectional structure of the metal pipe automatic welding positioning fixture according to an embodiment of the utility model.

[0016] Figure 4 It is a schematic diagram of the top cross-sectional connection structure of the adjusting gear and the transmission gear in an embodiment of the utility model.

[0017] In the figure: 1. positioning sleeve; 11. positioning cavity; 2. protective cover; 21. motor box; 22. drive bracket; 23. oil filling hole; 3. arc pressure plate; 31. connecting block; 32. electric push rod; 33. anti-slip rubber pad; 4. adjusting gear; 41. first transmission gear; 42. rotating shaft; 43. second transmission gear; 44. stepping motor. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4As shown, the utility model provides a metal pipe automatic welding positioning fixture, comprising: a positioning sleeve 1 and an arc-shaped pressing plate 3, wherein a metal pipe is passed through the inner side of the positioning sleeve 1, and the side end of the positioning sleeve 1 is connected to the arc-shaped pressing plate 3 through a connecting block 31.

[0019] A protective cover 2 is sleeved on the outer surface of the positioning sleeve 1, and an adjusting gear 4 is installed on the outer tube surface of the positioning sleeve 1. The front and rear sides of the adjusting gear 4 are respectively meshed and connected with a first transmission gear 41 and a second transmission gear 43. The first transmission gear 41 and the second transmission gear 43 are connected to the inner wall of the protective cover 2 through a rotating shaft 42. The right end of the first transmission gear 41 is connected to a stepping motor 44 through the rotating shaft 42.

[0020] Working principle: First, the metal pipe to be welded is inserted into the inner side of the positioning sleeve 1, and the electric push rod 32 is started to push the arc pressure plate 3 to clamp and press the surface of the metal pipe, and then it is moved to the welding machine for welding. During the welding process, the stepper motor 44 evenly drives the adjustment gear 4, the first transmission gear 41 and the second transmission gear 43 to engage and rotate with each other, thereby driving the metal pipe clamped in the positioning sleeve 1 to rotate, so as to automatically adjust the welding position during the welding process and improve the efficiency of automatic welding of metal pipes.

[0021] In this embodiment, a positioning cavity 11 is provided inside the positioning sleeve 1 ; the metal tube is located in the positioning cavity 11 , and the lower end of the protective cover 2 is connected to the welding table through the driving bracket 22 .

[0022] As a preferred embodiment, the positioning cavity 11 facilitates the metal pipe to penetrate into the inner side of the positioning sleeve 1. The protective cover 2 facilitates the protection of the meshing gears to prevent impurities and dust from entering the tooth surface. The driving bracket 22 is installed with the moving mechanism on the welding table, so that the moving mechanism on the welding table drives the positioning sleeve 1 to move and position at the welding position.

[0023] In this embodiment, a motor box 21 is welded to the right end of the protective cover 2 ; and the stepper motor 44 is installed inside the motor box 21 , and an oil filling hole 23 is opened on the upper end surface of the protective cover 2 .

[0024] As a preferred embodiment, the stepper motor 44 in the motor box 21 drives the first transmission gear 41 to rotate, so that the adjustment gear 4 and the second transmission gear 43 are meshed and rotated. The oil injection hole 23 injects lubricant for the meshing rotation of the gears.

[0025] In this embodiment, connecting blocks 31 are welded to the left and right ends of the positioning sleeve 1 , an electric push rod 32 is embedded and installed inside the connecting block 31 , and the head of the electric push rod 32 is connected to the arc-shaped pressure plate 3 .

[0026] As a preferred implementation, the electric push rod 32 pushes the arc-shaped pressure plate 3 to press the surface of the metal pipe, which is convenient for clamping and fixing the metal pipe and ensuring stable welding processing of the metal pipe.

[0027] In this embodiment, two groups of arc-shaped pressing plates 3 are symmetrically distributed up and down on the right side of the positioning sleeve 1; and two groups of arc-shaped pressing plates 3 are symmetrically distributed front and back on the left side of the positioning sleeve 1.

[0028] As a preferred embodiment, the arc-shaped pressure plates 3 on the left and right sides of the positioning sleeve 1 clamp the surface of the metal pipe passing through the positioning sleeve 1 to ensure that the positioning sleeve 1 can firmly clamp the metal pipe during rotation to prevent the metal pipe from sliding or shifting.

[0029] In this embodiment, one side surface of the arc-shaped pressing plate 3 is in the shape of an inwardly concave arc surface; and an anti-skid rubber pad 33 is bonded to the arc surface of the arc-shaped pressing plate 3 .

[0030] As a preferred implementation, the arc-shaped pressing plate 3 presses and clamps the metal tube through the concave arc surface, so that the metal tube is fixedly clamped on the inner side of the positioning sleeve 1.

[0031] In this embodiment, the protective cover 2 , the adjusting gear 4 , the first transmission gear 41 , the second transmission gear 43 , the rotating shaft 42 and the stepping motor 44 constitute a rotation adjustment mechanism for positioning the sleeve 1 .

[0032] As a preferred embodiment, the rotation adjustment mechanism of the positioning sleeve 1 facilitates effective rotation adjustment of the weld position of the metal pipe, enhances the practical effect of the welding positioning fixture, and improves the efficiency of automated welding of the metal pipe.

[0033] The automatic welding positioning fixture for metal pipes of the utility model can effectively solve the problem in the prior art that it is difficult for the assembly fixture to rotate and adjust the automatic welding position of the metal pipe, realize a welding positioning fixture with an automatic adjustment function, effectively rotate and adjust the weld position of the metal pipe, enhance the practical effect of the welding positioning fixture, and improve the automatic welding efficiency of the metal pipe, and is suitable for the automatic welding positioning fixture for metal pipes.

Claims

1. A metal pipe automatic welding positioning fixture, comprising: A positioning sleeve (1) and an arc-shaped pressing plate (3), wherein a metal tube runs through the inner side of the positioning sleeve (1), and the side end of the positioning sleeve (1) is connected to the arc-shaped pressing plate (3) via a connecting block (31), characterized in that: The outer surface of the positioning sleeve (1) is sleeved with a protective cover (2); an adjusting gear (4) is installed on the outer surface of the positioning sleeve (1); the front and rear sides of the adjusting gear (4) are respectively meshed with a first transmission gear (41) and a second transmission gear (43); the first transmission gear (41) and the second transmission gear (43) are connected to the inner wall of the protective cover (2) via a rotating shaft (42); and the right end of the first transmission gear (41) is connected to a stepping motor (44) via the rotating shaft (42).

2. The metal pipe automatic welding positioning fixture according to claim 1, characterized in that: A positioning cavity (11) is provided inside the positioning tube sleeve (1); the metal tube is located in the positioning cavity (11); and the lower end of the protective cover (2) is connected to the welding table through a driving bracket (22).

3. The metal pipe automatic welding positioning fixture according to claim 1, characterized in that: A motor box (21) is welded to the right end of the protective cover (2); and a stepper motor (44) is installed inside the motor box (21); and an oil filling hole (23) is opened on the upper end surface of the protective cover (2).

4. The metal pipe automatic welding positioning fixture according to claim 1, characterized in that: The left and right side ends of the positioning sleeve (1) are both welded with connecting blocks (31), an electric push rod (32) is embedded and installed inside the connecting block (31), and the rod head of the electric push rod (32) is connected to an arc-shaped pressure plate (3).

5. The metal pipe automatic welding positioning fixture according to claim 1, characterized in that: The right side end of the positioning sleeve (1) has two groups of arc-shaped pressing plates (3) symmetrically distributed up and down; and the left side end of the positioning sleeve (1) has two groups of arc-shaped pressing plates (3) symmetrically distributed front and back.

6. The metal pipe automatic welding positioning fixture according to claim 1, characterized in that: One side surface of the arc-shaped pressing plate (3) is in the shape of an inwardly concave arc surface; and a non-slip rubber pad (33) is bonded to the arc surface of the arc-shaped pressing plate (3).

7. The metal pipe automatic welding positioning fixture according to claim 1, characterized in that: The protective cover (2), the adjusting gear (4), the first transmission gear (41), the second transmission gear (43), the rotating shaft (42) and the stepping motor (44) constitute a rotation adjustment mechanism of the positioning sleeve (1).

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