Clamping structure and steel pipe welding machine thereof

Abstract

The utility model relates to the technical field of clamping devices, and discloses a clamping structure and a steel pipe welding machine thereof, the clamping structure comprises a clamping device, the clamping device comprises a concentric-square-shaped plate and a supporting column, a rolling mechanism is arranged in the middle of the clamping device, a clamping unit is arranged below the clamping device, and pushing assemblies are arranged on the two sides of the concentric-square-shaped plate; the rolling mechanism comprises a rectangular plate, an air cylinder and a rolling wheel unit. The rolling wheel unit comprises rolling wheels. The clamping unit comprises a moving plate, a first clamping plate and a second clamping plate. According to the device, the clamping unit is arranged below the concentric-square-shaped plate, the clamping unit can clamp steel pipes with different diameters in the working process, the pushing assembly is arranged to move the clamping unit, so that the steel pipes are driven to move, and the positions of the steel pipes are conveniently changed; and when the rolling mechanism works, the steel pipe can be driven to rotate to different positions for welding, and the welding efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, in particular to a clamping structure and a steel pipe welding machine thereof. Background Art

[0002] The clamping structure of existing steel processing welding machines has poor stability and is prone to displacement during steel pipe welding, which reduces the processing quality of the product and reduces the practicality of the equipment.

[0003] The prior art discloses a welding machine with a stable clamping structure for steel processing (publication number: CN218109843U), which includes a base, two symmetrically distributed supporting feet fixedly installed at the bottom end of the base, and two symmetrically distributed mounting plates fixedly installed at the top end of the base, a rotating device is provided between the two mounting plates, and support blocks distributed in a straight line are fixedly installed at the top end of the base, support frames are fixedly installed at the top ends of the support blocks, and two groups of symmetrically distributed clamping structures are installed at the top end of the base, and a second support plate is fixedly installed on one side of the base.

[0004] The existing technology helps to prevent the steel pipe from shifting during the welding process, so that the steel pipe remains stable during the welding process and the welding quality of the product is improved. However, the existing technology is not convenient for moving the steel pipe and requires workers to manually adjust the position, which reduces the welding efficiency.

[0005] Therefore, those skilled in the art provide a clamping structure and a steel pipe welding machine thereof to solve the problems raised in the above background technology. Utility Model Content

[0006] In view of the deficiencies in the prior art, the present invention provides a clamping structure and a steel pipe welding machine thereof, which solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A clamping structure includes a clamping device, the clamping device includes a circular plate and a support column installed at the bottom end of the circular plate for support, a rolling mechanism is provided at the middle position of the clamping device, a clamping unit for clamping a steel pipe is provided below the clamping device, and a pushing component for moving the clamping unit is provided on both sides of the circular plate; the rolling mechanism includes a rectangular plate, a cylinder and a roller unit, the cylinder is used to control the height of the roller unit, and the roller unit includes a rolling wheel; the clamping unit includes a movable plate, a first clamping plate and a second clamping plate, and the first clamping plate, the second clamping plate and the movable plate are in a movable engaging relationship; the pushing component includes a first servo motor and a screw.

[0009] According to the clamping structure, the rectangular plate is fixedly mounted on the top of the circular plate, the cylinder is fixedly mounted on the top of the rectangular plate, and the telescopic end of the cylinder movably penetrates the rectangular plate.

[0010] According to the clamping structure, the roller unit also includes an assembly block and a drive motor. The assembly block is "U"-shaped. The rolling wheel is movably installed in the cavity of the assembly block through a pin shaft. The drive motor is fixedly installed on the outer wall surface of one side of the assembly block. The output shaft of the drive motor is fixedly connected to the pin shaft on one side of the rolling wheel.

[0011] According to the clamping structure, the top wall of the movable plate is fixedly connected to two sides of the limiting blocks, the limiting blocks are L-shaped, the two limiting blocks are movably engaged with the two sides of the circular plate, and a connecting plate is fixedly connected between the two limiting blocks.

[0012] According to the clamping structure, the lead screw movably passes through the connecting plate, the lead screw and the connecting plate are perpendicular to each other, and there is a threaded connection relationship between the lead screw and the connecting plate. One end of the lead screw is movably installed on one side of the rectangular plate through a bearing.

[0013] According to the clamping structure, the first servo motor is fixedly mounted on one side of the top end of the circular plate, and the end of the lead screw away from the rectangular plate is fixedly connected to the output shaft of the first servo motor.

[0014] The cam is secured to the chassis and has a bottom surface, the cam being secured to the chassis by a secure connection to the chassis.

[0015] A steel pipe welding machine comprises a welding device and the above-mentioned clamping structure, wherein a group of the clamping structures is provided on each side of the welding device.

[0016] The utility model provides a clamping structure and a steel pipe welding machine thereof, which have the following beneficial effects:

[0017] (1) The present application sets a clamping unit under the circular plate, which can clamp steel pipes of different diameters during operation. A pushing component is set to move the clamping unit, thereby driving the steel pipe to move, making it easier to change the position of the steel pipe. By setting a rolling mechanism, the rolling mechanism can drive the steel pipe to rotate when working, and rotate to different positions for welding, thereby further improving the welding efficiency.

[0018] (2) The rolling wheel is movably installed in the assembly block through a pin shaft. The driving motor drives the rolling wheel to rotate during operation. The rolling wheel follows the assembly block to descend and contact the steel pipe. The rotation of the rolling wheel drives the steel pipe to rotate.

[0019] (3) The first clamping plate is fixedly connected to the first slider, and the second clamping plate is fixedly connected to the second slider. The first slider and the second slider are movably engaged in the inverted "convex" groove at the bottom end of the movable plate. The rotating shaft movably passes through the first slider and the second slider. A group of reverse threads are provided on the outer wall surface of the rotating shaft. The first slider and the second slider are located on both sides of the rotating shaft. The first slider, the second slider and the rotating shaft are in a threaded connection relationship. During the rotation of the rotating shaft driven by the second servo motor, the first slider and the second slider approach each other, driving the first clamping plate and the second clamping plate to approach each other to clamp the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a clamping structure and a steel pipe welding machine thereof according to the present invention;

[0021] Figure 2 Schematic diagram of the three-dimensional structure of the clamping device Figure 1 ;

[0022] Figure 3 Schematic diagram of the three-dimensional structure of the clamping device Figure 2 ;

[0023] Figure 4 Schematic diagram of the three-dimensional structure of the rolling mechanism;

[0024] Figure 5 Schematic diagram of the three-dimensional structure of the clamping unit;

[0025] Figure 6 Schematic diagram of the connection relationship between the first clamping plate, the second clamping plate and the rotating shaft.

[0026] Legend:

[0027] 10. Clamping device; 11. Welding device; 12. Clip plate; 13. Support column; 14. Rolling mechanism; 15. First servo motor; 16. Lead screw; 17. Clamping unit; 18. Rectangular plate; 19. Cylinder; 20. Assembly block; 21. Rolling wheel; 22. Drive motor; 23. Limit block; 24. Moving plate; 25. Connecting plate; 26. First clamping plate; 27. Second clamping plate; 28. Second servo motor; 29. First slider; 30. Second slider; 31. Rotating axis. DETAILED DESCRIPTION

[0028] like Figure 1-6 As shown: a clamping structure, including a clamping device 10, the clamping device 10 includes a circular plate 12 and a support column 13 installed at the bottom end of the circular plate 12 for support, a rolling mechanism 14 is provided at the middle position of the clamping device 10, a clamping unit 17 for clamping the steel pipe is provided below the clamping device 10, and a pushing component for moving the clamping unit 17 is provided on both sides of the circular plate 12; the rolling mechanism 14 includes a rectangular plate 18, a cylinder 19 and a roller unit, the cylinder 19 is used to control the height of the roller unit, and the roller unit includes a rolling wheel 21; the clamping unit 17 includes a movable plate 24, a first clamping plate 26 and a second clamping plate 27, and the first clamping plate 26, the second clamping plate 27 and the movable plate 24 are in a movable engaging relationship; the pushing component includes a first servo motor 15 and a screw 16.

[0029] A steel pipe welding machine includes a welding device 11 and the above-mentioned clamping structure, wherein a group of the clamping structure is provided on each side of the welding device 11.

[0030] Specifically, the present application sets a clamping unit 17 under the circular plate 12. The clamping unit 17 can clamp steel pipes of different diameters during operation. A pushing component is set to move the clamping unit 17, thereby driving the steel pipe to move, which is convenient for changing the position of the steel pipe. By setting a rolling mechanism 14, the rolling mechanism 14 can drive the steel pipe to rotate when working, and rotate to different positions for welding, thereby further improving the welding efficiency.

[0031] The rectangular plate 18 is fixedly mounted on the top of the circular plate 12 , and the cylinder 19 is fixedly mounted on the top of the rectangular plate 18 . The telescopic end of the cylinder 19 movably penetrates the rectangular plate 18 .

[0032] Specifically, a rectangular plate 18 is fixedly mounted on the circular plate 12 , a cylinder 19 is mounted on the rectangular plate 18 , a telescopic end of the cylinder 19 is fixedly connected to the assembly block 20 , and the cylinder 19 controls the height of the assembly block 20 during operation.

[0033] The roller unit also includes an assembly block 20 and a drive motor 22. The assembly block 20 is "U"-shaped. The scroll wheel 21 is movably installed in the cavity of the assembly block 20 through a pin shaft. The drive motor 22 is fixedly installed on the outer wall surface of one side of the assembly block 20. The output shaft of the drive motor 22 is fixedly connected to the pin shaft on one side of the scroll wheel 21.

[0034] Specifically, the rolling wheel 21 is movably installed in the assembly block 20 through a pin shaft. The driving motor 22 drives the rolling wheel 21 to rotate during operation. The rolling wheel 21 follows the assembly block 20 to descend and contact the steel pipe. The rotation of the rolling wheel 21 drives the steel pipe to rotate.

[0035] The two limit blocks 23 are fixedly connected to the top wall of the movable plate 24 on both sides. The limit blocks 23 are L-shaped. The two limit blocks 23 are movably engaged with the two sides of the circular plate 12 respectively. A connecting plate 25 is fixedly connected between the two limit blocks 23.

[0036] Specifically, by setting fixed connection limit blocks 23 on both sides of the top of the movable plate 24, the limit blocks 23 are L-shaped, and the two limit blocks 23 are movably engaged with both sides of the circular plate 12, thereby limiting the movement of the movable plate 24.

[0037] Screw 16 flexibly extends through connecting plate 25, perpendicular to each other. Screw 16 and connecting plate 25 are threadedly connected. One end of screw 16 is movably mounted on one side of rectangular plate 18 via a bearing. A first servo motor 15 is fixedly mounted on one side of the top of circular plate 12. The end of screw 16, away from rectangular plate 18, is fixedly connected to the output shaft of first servo motor 15.

[0038] Specifically, a connecting plate 25 is fixedly connected between the two limit blocks 23, and the lead screw 16 movably passes through the connecting plate 25. The first servo motor 15 drives the lead screw 16 to rotate during operation. The lead screw 16 and the connecting plate 25 are threadedly connected, thereby driving the connecting plate 25 to move, and the connecting plate 25 drives the movable plate 24 to move synchronously.

[0039] The bottom end of the movable plate 24 is provided with an inverted "convex" groove, and two first sliders 29 and second sliders 30 are movably engaged in the inverted "convex" groove. The bottom end of the first slider 29 is fixedly connected to the first clamping plate 26, and the bottom end of the second slider 30 is fixedly connected to the second clamping plate 27. The first clamping plate 26 and the second clamping plate 27 are parallel to each other, and an arc groove is provided on the side wall where the first clamping plate 26 and the second clamping plate 27 are close to each other. A second servo motor 28 is fixedly installed on one side of the movable plate 24, and a rotating shaft 31 is movably installed in the inverted "convex" groove. One end of the rotating shaft 31 movably passes through the movable plate 24 and is fixedly connected to the output shaft of the second servo motor 28. A group of reverse threads are provided on the outer wall of the rotating shaft 31, and the first slider 29 and the second slider 30 are located on both sides of the rotating shaft 31, and the first slider 29, the second slider 30 and the rotating shaft 31 are threadedly connected.

[0040] Specifically, the first clamping plate 26 is fixedly connected to the first slider 29, and the second clamping plate 27 is fixedly connected to the second slider 30. The first slider 29 and the second slider 30 are movably engaged in the inverted "convex" groove at the bottom end of the movable plate 24. The rotating shaft 31 movably passes through the first slider 29 and the second slider 30. A group of reverse threads are provided on the outer wall surface of the rotating shaft 31. The first slider 29 and the second slider 30 are located on both sides of the rotating shaft 31. There is a threaded connection relationship between the first slider 29, the second slider 30 and the rotating shaft 31. During the rotation of the rotating shaft 31 driven by the second servo motor 28, the first slider 29 and the second slider 30 approach each other, driving the first clamping plate 26 and the second clamping plate 27 to approach each other to clamp the steel pipe.

[0041] The working principle of a clamping structure and a steel pipe welding machine of the present application is as follows: the present application sets a clamping unit 17 under the circular plate 12, sets a first clamping plate 26 and a first slider 29 to be fixedly connected, and sets a second clamping plate 27 and a second slider 30 to be fixedly connected. The first slider 29 and the second slider 30 are movably engaged in the inverted "convex" groove at the bottom end of the movable plate 24, and the rotating shaft 31 movably passes through the first slider 29 and the second slider 30. A group of reverse threads are provided on the outer wall surface of the rotating shaft 31, and the first slider 29 and the second slider 30 are located on both sides of the rotating shaft 31. There is a threaded connection relationship between the first slider 29, the second slider 30 and the rotating shaft 31. During the rotation of the rotating shaft 31 driven by the second servo motor 28, the first slider 2 9 and the second slider 30 approach each other, driving the first clamping plate 26 and the second clamping plate 27 to approach each other to clamp the steel pipe, and a connecting plate 25 is set to be fixedly connected between the two limit blocks 23, and the screw 16 moves through the connecting plate 25. The first servo motor 15 drives the screw 16 to rotate during operation. The screw 16 and the connecting plate 25 are in a threaded connection relationship, thereby driving the connecting plate 25 to move, and the connecting plate 25 drives the moving plate 24 to move synchronously. The rolling wheel 21 is movably installed in the assembly block 20 through a pin shaft. The drive motor 22 drives the rolling wheel 21 to rotate during operation. The rolling wheel 21 follows the assembly block 20 to descend and contact the steel pipe. The rotation of the rolling wheel 21 drives the steel pipe to rotate, and the steel pipe is rotated to different positions for welding, thereby further improving the welding efficiency.

[0042] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A clamping structure, characterized in that: include: A clamping device (10), the clamping device (10) comprising a circular plate (12) and a support column (13) installed at the bottom end of the circular plate (12) for supporting, a rolling mechanism (14) is provided at the middle position of the clamping device (10), a clamping unit (17) for clamping the steel pipe is provided below the clamping device (10), and pushing components for moving the clamping unit (17) are provided on both sides of the circular plate (12); The rolling mechanism (14) includes a rectangular plate (18), a cylinder (19) and a roller unit, wherein the cylinder (19) is used to control the height of the roller unit, and the roller unit includes a rolling wheel (21); The clamping unit (17) comprises a movable plate (24), a first clamping plate (26) and a second clamping plate (27), and the first clamping plate (26), the second clamping plate (27) and the movable plate (24) are in a movable engagement relationship; The pushing assembly includes a first servo motor (15) and a lead screw (16).

2. The clamping structure according to claim 1, characterized in that: The rectangular plate (18) is fixedly mounted on the top of the circular plate (12), and the cylinder (19) is fixedly mounted on the top of the rectangular plate (18). The telescopic end of the cylinder (19) movably penetrates the rectangular plate (18).

3. The clamping structure according to claim 1, wherein: The roller unit further comprises an assembly block (20) and a drive motor (22). The assembly block (20) is U-shaped. The rolling wheel (21) is movably mounted in the cavity of the assembly block (20) via a pin. The drive motor (22) is fixedly mounted on an outer wall surface of one side of the assembly block (20). The output shaft of the drive motor (22) is fixedly connected to the pin on one side of the rolling wheel (21).

4. The clamping structure according to claim 1, wherein: The two sides of the top wall of the movable plate (24) are fixedly connected with limiting blocks (23), the limiting blocks (23) are L-shaped, the two limiting blocks (23) are movably engaged with the two sides of the circular plate (12), and a connecting plate (25) is fixedly connected between the two limiting blocks (23).

5. The clamping structure according to claim 1, wherein: The lead screw (16) movably passes through the connecting plate (25), the lead screw (16) and the connecting plate (25) are in a mutually perpendicular state, the lead screw (16) and the connecting plate (25) are in a threaded connection relationship, and one end of the lead screw (16) is movably mounted on one side of the rectangular plate (18) through a bearing.

6. The clamping structure according to claim 1, wherein: The first servo motor (15) is fixedly mounted on one side of the top end of the circular plate (12), and the end of the lead screw (16) away from the rectangular plate (18) is fixedly connected to the output shaft of the first servo motor (15).

7. The clamping structure according to claim 4, characterized in that: The bottom end of the movable plate (24) is provided with an inverted "convex" groove, and two first sliders (29) and second sliders (30) are movably engaged in the inverted "convex" groove. The bottom end of the first slider (29) is fixedly connected to the first clamping plate (26), and the bottom end of the second slider (30) is fixedly connected to the second clamping plate (27). The first clamping plate (26) and the second clamping plate (27) are parallel to each other. The side wall of the first clamping plate (26) and the second clamping plate (27) are both provided with an arc groove. The movable plate (24) is provided with an inverted "convex" groove. 4), a second servo motor (28) is fixedly installed on one side of the movable plate (24), a rotating shaft (31) is movably installed in the inverted "convex" groove, one end of the rotating shaft (31) movably passes through the movable plate (24) and is fixedly connected to the output shaft of the second servo motor (28), a group of reverse threads are opened on the outer wall surface of the rotating shaft (31), a first slider (29) and a second slider (30) are located on both sides of the rotating shaft (31), and the first slider (29), the second slider (30) and the rotating shaft (31) are in a threaded connection relationship.

8. A steel pipe welding machine, characterized in that: The invention comprises a welding device (11) and a clamping structure as claimed in any one of claims 1 to 7, wherein a group of the clamping structures is provided on each side of the welding device (11).

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