Pipe lifting structure of straight seam welding machine

Abstract

The utility model provides a pipe fitting lifting structure of a straight seam welding machine, and belongs to the technical field of straight seam welding machines. The straight seam welding machine solves the problem that an existing straight seam welding machine is very inconvenient to pre-position a pipe fitting. The pipe fitting lifting structure of the straight seam welding machine comprises a rack and a core shaft installed on the rack, a sliding groove is formed in the bottom of the core shaft in the axial direction, an installation groove is formed in the top face of the sliding groove in the radial direction of the core shaft, a through hole is formed in the inner top face of the installation groove, a pushing piece is arranged in the installation groove, and the upper end of the pushing piece is arranged in the through hole in a penetrating mode. A sliding plate is arranged in the sliding groove, a groove is formed in the upper surface of the sliding plate, and a driving piece capable of pushing the sliding plate to slide in the length direction of the sliding groove is arranged on the rack. According to the structure, upward and downward sliding of the pushing piece is achieved in the mode that the driving piece drives the sliding plate to slide back and forth, automatic lifting of the pipe fitting is achieved, manual operation is not needed, and the convenience of pre-positioning operation of the pipe fitting is remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of straight seam welding machines, in particular to a pipe lifting structure of a straight seam welding machine. Background Art

[0002] Straight seam welding machine is a kind of automatic welding machine, which can replace a large number of manual labor, greatly improve production efficiency and welding quality, reduce labor costs, and improve the working environment of welders. At present, straight seam welding of large transformer shell corner seam welding, straight seam welding of large cylinders, straight seam welding of solar water heater cylinders, straight seam welding of steel strips on production lines, welding of H-shaped steel, etc., all use straight seam welding machines in large quantities.

[0003] At present, China Patent Network discloses a ventilation duct straight seam welding machine [CN215999173U], which discloses that a push rod is inserted into the ventilation duct, and then the front and rear ends of the push rod are clamped into the grooves of the top block, and then the adjusting rod 2 is rotated to make the adjusting rod 2 move upward in the limit frame connected under the connecting hinge, and then the adjusting rod 2 is used to support the top block to move upward, and the push rod is driven to move upward by the top block, so that the push rod and the support beam on the welding machine base clamp the ventilation duct together, so that the gap in the ventilation duct is exposed in the welding groove, the gap can be observed through the welding groove, and then the welding head is convenient for welding the gap.

[0004] The above-mentioned ventilation duct straight seam welding machine has the following defects: after the ventilation duct is sleeved on the top rod, it is necessary to manually rotate the adjustment rod 2 to move the top rod upward so that the support beam and the top rod can jointly clamp the ventilation duct, and in order to ensure that the ventilation duct is clamped, the machine user needs to use a lot of force to tighten the adjustment rod 2 into place, which makes the clamping operation before welding the ventilation duct very inconvenient. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems in the prior art and to propose a pipe lifting structure for a straight seam welding machine. The technical problem to be solved by the utility model is: how to improve the convenience of the pipe clamping operation.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A pipe lifting structure for a straight seam welding machine comprises a frame and a core shaft installed on the frame, a left limit plate and a right limit plate are arranged above the core shaft, and a gap is provided between the left limit plate and the right limit plate, characterized in that a slide groove is provided at the bottom of the core shaft along its axial direction, a mounting groove is provided on the top surface of the slide groove along the radial direction of the core shaft, a through hole is provided on the inner top surface of the mounting groove, a push piece is provided in the mounting groove, the upper end of the push piece is penetrated in the through hole, a slide plate is provided in the slide groove, a groove is provided on the upper surface of the slide plate, the groove has a horizontal surface and an inclined surface, the lower end of the push piece is abutted against the horizontal surface, and a driving piece that can push the slide plate to slide along the length direction of the slide groove is provided on the frame.

[0008] Under normal circumstances, there is a certain distance between the core shaft and the left limit plate or the right limit plate in the vertical direction, and this distance makes it convenient for the core shaft to pass through the pipe to be welded. When the pipe to be welded is installed on the core shaft, the pipe and the left limit plate and the right limit plate are not in a close contact state. Then the driving member drives the slide plate to slide in the slide groove. After sliding, the lower end of the push member moves from the horizontal plane to the inclined plane, and the lower end of the push member moves along the inclined plane to the upper surface of the slide plate. In this process, the push rod gradually moves upward in the installation groove, and the upper end of the push rod abuts against the inner wall of the pipe fitting to lift the pipe fitting upward, so that the pipe fitting is in close contact with the left limit plate and the right limit plate, thereby realizing the clamping and positioning of the pipe fitting; when the pipe fitting is welded, the driving member pulls the slide plate back, and the push member automatically slides downward and resets under the action of its own gravity. This structure uses a driving member to drive the slide plate to slide back and forth to realize the upward and downward sliding of the push member, so that the pipe fitting can be automatically lifted without manual operation, which significantly improves the convenience of the pipe fitting pre-positioning operation. At the same time, the positioning and unlocking of the pipe fitting is also achieved by using a driving member to drive the slide plate to slide, which also improves the convenience of the pipe fitting positioning and unlocking operation.

[0009] In the above-mentioned pipe lifting structure of a straight seam welding machine, a spring is arranged in the installation groove, the upper end of the spring abuts against the inner top surface of the installation groove, and the lower end abuts against the push piece. After the pipe is positioned, the spring is in a compressed state. When the pipe is welded, the driving member drives the slide plate to move back. Under the action of the spring, the lower end of the push piece slides along the inclined surface to the horizontal surface, ensuring that the push piece can be reset to its position without getting stuck.

[0010] In the above-mentioned pipe lifting structure of a straight seam welding machine, the lower end of the push member has a hemispherical end head, and the end head abuts against the horizontal surface. The hemispherical structure of the end head makes the friction between the end head and the horizontal surface and the inclined surface smaller, ensuring that the push rod will not get stuck when moving upward along the inclined surface.

[0011] In the above-mentioned pipe lifting structure of a straight seam welding machine, the push member includes a main body, the end head is located at the lower end of the main body, the upper end surface of the main body has a spring column, the spring is sleeved on the spring column and the lower end of the spring is against the upper end surface of the main body, the upper end surface of the spring column has a push rod, and the push rod is inserted into the through hole.

[0012] In the above-mentioned pipe lifting structure of a straight seam welding machine, at least two installation grooves are arranged at intervals along the axial direction of the core shaft, and each installation groove is provided with the above-mentioned push piece. The arrangement of multiple push pieces ensures that the pipe can be stably lifted upward.

[0013] In the above-mentioned pipe lifting structure of a straight seam welding machine, a positioning plate is arranged at the position of the mandrel corresponding to the slide slot, and the positioning plates have at least two, and all the positioning plates are arranged at intervals along the length direction of the slide slot, and the positioning plates are connected to the mandrel by screws, and the slide plate is slidably arranged on all the positioning plates. The positioning plates are arranged so that the slide plate will not fall out of the slide slot, and the slide plate can be ensured to slide stably in the slide slot.

[0014] In the above-mentioned pipe lifting structure of a straight seam welding machine, the driving member is a cylinder, the end of the slide plate has a connecting plate arranged vertically, and the piston rod of the cylinder is fixedly connected to the connecting plate.

[0015] In the above-mentioned pipe lifting structure of a straight seam welding machine, a linear groove is provided on the top of the mandrel along its axial direction, and the linear groove is located directly below the gap. During the welding process of the pipe, solder or welding chips will fall into the linear groove.

[0016] Compared with the prior art, the pipe lifting structure of the straight seam welding machine of the utility model has the following advantages: the structure adopts a driving member to drive the slide plate to slide back and forth to realize the upward and downward sliding of the push member, so that the pipe can be lifted automatically without manual operation, which significantly improves the convenience of the pipe pre-positioning operation. At the same time, the positioning and unlocking of the pipe is also achieved by driving the slide plate to slide, which also improves the convenience of the pipe positioning and unlocking operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 2 It is a bottom view of the utility model.

[0019] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure along the middle line AA.

[0020] Figure 4 yes Figure 2Schematic diagram of the cross-sectional structure along BB.

[0021] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure of part A in the middle.

[0022] In the figure, 1, frame; 2, core shaft; 20, slide groove; 21, mounting groove; 22, through hole; 23, linear groove; 3, left limit plate; 4, right limit plate; 5, gap; 6, push piece; 60, end; 6a, main body; 6b, spring column; 6c, push rod; 7, slide plate; 8, groove; 80, horizontal plane; 81, inclined plane; 9, cylinder; 10, spring; 11, positioning plate; 12, connecting plate. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0024] like Figure 1 to Figure 5As shown, the pipe lifting structure of the straight seam welding machine includes a frame 1 and a core shaft 2 installed on the frame 1, a left limit plate 3 and a right limit plate 4 are arranged above the core shaft 2, a gap 5 is provided between the left limit plate 3 and the right limit plate 4, a slide groove 20 is provided at the bottom of the core shaft 2 along its axial direction, a mounting groove 21 is provided on the top surface of the slide groove 20 along the radial direction of the core shaft 2, a through hole 22 is provided on the inner top surface of the mounting groove 21, a push piece 6 is provided in the mounting groove 21, the upper end of the push piece 6 is penetrated in the through hole 22, a spring 10 is provided in the mounting groove 21, the upper end of the spring 10 abuts on the inner top surface of the mounting groove 21, and the lower end abuts on the push piece 6, and the mounting groove 21 in this embodiment is provided with at least two at intervals along the axial direction of the core shaft 2, and a push piece 6 is provided in each mounting groove 21. A slide plate 7 is arranged in the slide groove 20, and a groove 8 is provided on the upper surface of the slide plate 7. The groove 8 has a horizontal surface 80 and an inclined surface 81. The lower end of the push member 6 abuts against the horizontal surface 80. A driving member capable of pushing the slide plate 7 to slide along the length direction of the slide groove 20 is arranged on the frame 1. Under normal circumstances, there is a certain distance between the core shaft 2 and the left limit plate 3 or the right limit plate 4 in the vertical direction, and this distance facilitates the core shaft 2 to be inserted into the pipe to be welded. When the pipe to be welded is installed on the core shaft 2, the pipe and the left limit plate 3 and the right limit plate 4 are not in a close contact state. Then the driving member drives the slide plate 7 to slide in the slide groove 20. After the slide plate 7 slides, the lower end of the push member 6 moves from the horizontal plane 80 to the inclined plane 81, and the lower end of the push member 6 moves along the inclined plane 81 to the upper surface of the slide plate 7. In this process, the push rod 6 gradually moves upward in the installation groove 21, and the upper end of the push rod 6 abuts against the inner wall of the pipe fitting to lift the pipe fitting upward, so that the pipe fitting is in close contact with the left limit plate 3 and the right limit plate 4, thereby realizing the clamping and positioning of the pipe fitting; when the pipe fitting is welded, the driving member pulls the slide plate 7 back, and the push member 6 automatically slides downward and resets under the action of the spring 10. This structure uses a driving member to drive the slide plate 7 to slide back and forth to realize the upward and downward sliding of the push member 6, so that the pipe fitting can be automatically lifted without manual operation, which significantly improves the convenience of the pipe fitting pre-positioning operation. At the same time, the positioning and unlocking of the pipe fitting is also achieved by using a driving member to drive the slide plate 7 to slide, which also improves the convenience of the pipe fitting positioning and unlocking operation.

[0025] like Figure 5 As shown, the lower end of the push member 6 has a hemispherical end 60, and the end 60 abuts against the horizontal surface 80. The hemispherical structure of the end 60 makes the friction between the end 60 and the horizontal surface 80 and the inclined surface 81 small, ensuring that the push rod 6 will not get stuck when moving upward along the inclined surface 81.

[0026] like Figure 5As shown, the push member 6 includes a main body 6a, an end 60 is located at the lower end of the main body 6a, the upper end surface of the main body 6a has a spring column 6b, the spring 10 is sleeved on the spring column 6b and the lower end of the spring 10 abuts against the upper end surface of the main body 6a, the upper end surface of the spring column 6b has a push rod 6c, and the push rod 6c is penetrated in the through hole 22. The position of the core shaft 2 corresponding to the slide groove 20 is provided with a positioning plate 11, there are at least two positioning plates 11, all the positioning plates 11 are arranged at intervals along the length direction of the slide groove 20, the positioning plates 11 are connected to the core shaft 2 by screws, and the slide plate 7 is slidably arranged on all the positioning plates 11.

[0027] like Figure 1 and Figure 4 As shown, the driving member is a cylinder 9, and the end of the slide plate 7 has a connecting plate 12 arranged vertically, and the piston rod of the cylinder 9 is fixedly connected to the connecting plate 12. A linear groove 23 is opened along the axial direction of the top of the mandrel 2, and the linear groove 23 is located just below the gap 5. During the welding process of the pipe fitting, the solder or welding chips will fall into the linear groove 23.

[0028] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A pipe lifting structure for a straight seam welding machine, comprising a frame (1) and a mandrel (2) mounted on the frame (1), a left limit plate (3) and a right limit plate (4) being arranged above the mandrel (2), a gap (5) being provided between the left limit plate (3) and the right limit plate (4), characterized in that: The bottom of the core shaft (2) is provided with a slide groove (20) along its axial direction, the top surface of the slide groove (20) is provided with a mounting groove (21) along the radial direction of the core shaft (2), the inner top surface of the mounting groove (21) is provided with a through hole (22), a push piece (6) is arranged in the mounting groove (21), the upper end of the push piece (6) is inserted into the through hole (22), a slide plate (7) is arranged in the slide groove (20), a groove (8) is arranged on the upper surface of the slide plate (7), the groove (8) has a horizontal surface (80) and an inclined surface (81), the lower end of the push piece (6) is in contact with the horizontal surface (80), and a driving member capable of pushing the slide plate (7) to slide along the length direction of the slide groove (20) is arranged on the frame (1).

2. The pipe lifting structure of a straight seam welding machine according to claim 1, characterized in that: A spring (10) is arranged in the installation groove (21), the upper end of the spring (10) abuts against the inner top surface of the installation groove (21), and the lower end of the spring (10) abuts against the push piece (6).

3. The pipe lifting structure of a straight seam welding machine according to claim 2, characterized in that: The lower end of the pushing member (6) has a hemispherical end head (60), and the end head (60) abuts against a horizontal plane (80).

4. The pipe lifting structure of a straight seam welding machine according to claim 3, characterized in that: The push member (6) comprises a main body (6a), the end head (60) is located at the lower end of the main body (6a), the upper end surface of the main body (6a) is provided with a spring column (6b), the spring (10) is sleeved on the spring column (6b) and the lower end of the spring (10) abuts against the upper end surface of the main body (6a), the upper end surface of the spring column (6b) is provided with a push rod (6c), and the push rod (6c) is inserted into the through hole (22).

5. A pipe lifting structure for a straight seam welding machine according to any one of claims 1 to 4, characterized in that: At least two of the installation grooves (21) are arranged at intervals along the axial direction of the core shaft (2), and the pushing member (6) is arranged in each installation groove (21).

6. The pipe lifting structure of a straight seam welding machine according to claim 1, characterized in that: A positioning plate (11) is arranged at a position of the core shaft (2) corresponding to the slide groove (20), and the positioning plates (11) are at least two, and all the positioning plates (11) are arranged at intervals along the length direction of the slide groove (20). The positioning plates (11) are connected to the core shaft (2) by screws, and the slide plate (7) is slidably arranged on all the positioning plates (11).

7. The pipe lifting structure of a straight seam welding machine according to claim 1, characterized in that: The driving member is a cylinder (9), the end of the slide plate (7) is provided with a connecting plate (12) arranged vertically, and the piston rod of the cylinder (9) is fixedly connected to the connecting plate (12).

8. The pipe lifting structure of a straight seam welding machine according to claim 1, characterized in that: A linear groove (23) is provided at the top of the core shaft (2) along its axial direction, and the linear groove (23) is located directly below the gap (5).

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