Welding fixture for automobile exhaust pipe

Abstract

The invention discloses a welding fixture for automobile exhaust pipes, comprising a fixing rod, a straight pipe fixing assembly and a bent pipe fixing assembly installed on the fixing rod; the straight pipe fixing assembly and the bent pipe fixing assembly are both slidably matched with the fixing rod in a lockable and fixed manner; the bent pipe fixing assembly is used to fix the bent pipe to be welded and can adjust the spatial position and spatial angle of the bent pipe so that the end face of the bent pipe is directly opposite to the end face of the straight pipe; through the arrangement of a vertical sliding seat, a circular swing seat, a radial sliding seat, a tangential sliding seat, an L-shaped connecting plate and a lockable ball hinge, the spatial position and the angle between holes of the end of the bent pipe section are adjusted, so that the bent pipe section is easy to be aligned with the end of the straight pipe section for welding, and the bent pipe fixing assembly of this structure can be suitable for the welding and fixing of exhaust pipes of different shapes, effectively improving the versatility of the welding fixture for automobile exhaust pipes.

Description

Technical Field

[0001] The invention relates to a tool for processing an automobile exhaust pipe, in particular to a welding tool fixture for the automobile exhaust pipe. Background Art

[0002] Automobile exhaust pipes are used for exhausting exhaust gas from automobiles and are installed on the rear side of the bottom of the automobile. The shape of the exhaust pipe is designed according to the specific structure of the automobile chassis, and generally includes a straight pipe section located at the rear side and a curved pipe section located at the front side. When producing automobile exhaust pipes, generally straight pipe sections and curved pipe sections are produced separately first, and then the straight pipe sections and the curved pipe sections are welded together using welding technology to form a complete exhaust pipe. When welding, the straight pipe section and the curved pipe section are fixed separately by welding fixtures. However, the fixing fixtures in the prior art can usually only be used for straight pipe sections and curved pipe sections of specific sizes, and cannot be adjusted and fixed for curved pipe sections of different shapes, which makes the versatility of the existing fixtures poor. Summary of the invention

[0003] In view of this, the purpose of the present invention is to overcome the defects in the prior art and provide a welding fixture for automobile exhaust pipes, which can be suitable for welding and fixing exhaust pipes of different shapes, and effectively improve the versatility of the welding fixture for automobile exhaust pipes.

[0004] The present invention discloses a welding fixture for automobile exhaust pipe, comprising a fixing rod, a straight pipe fixing assembly and a bent pipe fixing assembly installed on the fixing rod; the straight pipe fixing assembly and the bent pipe fixing assembly are both slidably matched with the fixing rod in a lockable and fixed manner; the bent pipe fixing assembly is used to fix the bent pipe to be welded and can adjust the spatial position and spatial angle of the bent pipe so that the end face of the bent pipe is opposite to the end face of the straight pipe.

[0005] Furthermore, the bent pipe fixing assembly includes a bent pipe base sleeve, a vertical sliding seat, a circular pendulum seat, a radial sliding seat, a tangential sliding seat, an L-shaped connecting plate, a ball hinge and a bent pipe mounting block; the bent pipe base sleeve is slidably matched with the fixing rod in a lockable and fixed manner, the circular pendulum seat is vertically slidably matched with the vertical sliding seat in a lockable and fixed manner, the radial sliding seat is slidably matched with the circular pendulum seat along an arc direction in a lockable and fixed manner, the tangential sliding seat is radially slidably matched with the radial sliding seat in a lockable and fixed manner, one side plate of the L-shaped connecting plate is slidably matched with the tangential sliding seat in a direction perpendicular to the sliding of the tangential sliding seat in a lockable and fixed manner, and the mounting seat of the ball hinge is slidably matched with the other side plate of the L-shaped connecting plate along the length direction of the other side plate in a lockable and fixed manner; the other side plate of the L-shaped connecting plate is connected to the bent pipe mounting block via a ball hinge, and the ball hinge is a lockable ball hinge.

[0006] Furthermore, the vertical sliding seat, circular pendulum seat, radial sliding seat and tangential sliding seat are all plate-like structures. The vertical sliding seat is provided with vertical adjustment holes arranged vertically, the circular pendulum seat is provided with arc adjustment holes, the tangential sliding seat is provided with radial adjustment holes arranged radially along the arc adjustment holes and tangential adjustment holes perpendicular to the radial adjustment holes, and the other side plate of the L-shaped connecting plate is provided with transverse adjustment holes along the length direction; the circular pendulum seat is fixedly provided with a vertical locking bolt passing through the vertical adjustment hole, the radial sliding seat is fixedly provided with a circular pendulum locking bolt passing through the arc adjustment hole and a radial locking bolt passing through the radial adjustment hole, one side plate of the L-shaped connecting plate is fixedly provided with a tangential locking bolt passing through the tangential adjustment hole, and the mounting seat of the ball hinge is fixedly provided with a transverse locking bolt passing through the transverse adjustment hole.

[0007] Furthermore, the nut of each locking bolt is fixedly provided with a handle.

[0008] Furthermore, the elbow mounting block is detachably fixedly mounted on the ball hinge, the elbow mounting block is provided with a mounting hole matched with the flange at the end of the elbow, and the elbow mounting block is fixed to the flange at the end of the elbow by bolts.

[0009] Furthermore, the straight pipe fixing assembly includes a straight pipe base sleeve, a lower connecting rod, an upper connecting rod and a U-shaped block, the lower end of the lower connecting rod is hinged to the straight pipe base sleeve in a lockable and fixed manner, the lower end of the upper connecting rod is hinged to the upper end of the lower connecting rod in a lockable and fixed manner, the upper end of the upper connecting rod is hinged to the U-shaped block in a lockable and fixed manner, and the U-shaped block is provided with a locking bolt for locking and fixing the straight pipe section

[0010] Furthermore, the end face of the fixing rod is square, the straight tube base sleeve and the curved tube base sleeve are both conformally sleeved around the fixing rod, and the straight tube base sleeve and the curved tube base sleeve are both provided with locking threaded holes, and the locking threaded holes are used to lock and fix the straight tube base sleeve and the curved tube base sleeve to the fixing rod by installing a base locking nut.

[0011] Furthermore, the side edges of the straight tube base sleeve and the curved tube base sleeve are protruded to form a locking boss, and the locking threaded hole is provided in the locking boss.

[0012] The beneficial effects of the present invention are as follows: the welding fixture for automobile exhaust pipes disclosed in the present invention adjusts the spatial position of the end of the bent pipe section and the angle between holes through the vertical sliding seat, the circular swing seat, the radial sliding seat, the tangential sliding seat, the L-shaped connecting plate and the lockable ball hinge, so that the bent pipe section is easy to align with the end of the straight pipe section and then welded. The bent pipe fixing assembly of this structure can be suitable for welding and fixing exhaust pipes of different shapes, effectively improving the versatility of the welding fixture for automobile exhaust pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 Another structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0016] As shown in the figure, the welding fixture for automobile exhaust pipe in this embodiment includes a fixing rod 1, a straight pipe fixing component and a bent pipe fixing component installed on the fixing rod 1; the straight pipe fixing component and the bent pipe fixing component are both slidably matched with the fixing rod 1 in a lockable and fixed manner; the bent pipe fixing component is used to fix the bent pipe to be welded and can adjust the spatial position and spatial angle of the bent pipe so that the end face of the bent pipe is opposite to the end face of the straight pipe; the bent pipe fixing component includes a bent pipe base sleeve 2, a vertical sliding seat 3, a circular swing seat 4, a radial sliding seat 5, a tangential sliding seat 6, an L-shaped connecting plate, a ball hinge 8 and a bent pipe mounting block 9; the bent pipe base sleeve 2 is slidably matched with the fixing rod 1 in a lockable and fixed manner, the bottom of the vertical sliding seat 3 is fixed to one side of the bent pipe base sleeve 2, the circular swing seat 4 is vertically slidably matched with the vertical sliding seat 3 in a lockable and fixed manner, and the radial sliding seat 5 is slidably matched with the circular swing seat 4 in a lockable and fixed manner along an arc direction Dynamic fit, the tangential sliding seat 6 is radially slidably matched with the radial sliding seat 5 in a lockable and fixed manner, one side plate of the L-shaped connecting plate 7 is slidably matched with the tangential sliding seat 6 in a lockable and fixed manner along a direction perpendicular to the sliding of the tangential sliding seat 6, and the mounting seat of the ball hinge 8 is slidably matched with the other side plate of the L-shaped connecting plate 7 in a lockable and fixed manner along the length direction of the other side plate; the other side plate of the L-shaped connecting plate 7 is connected to the elbow mounting block 9 through the ball hinge 8, and the ball hinge 8 is a lockable ball hinge 8; through the vertical sliding seat 3, the circular swing seat 4, the radial sliding seat 5, the tangential sliding seat 6, the L-shaped connecting plate 7 and the lockable ball hinge 8, the spatial position of the end of the elbow section and the angle between the holes are adjusted, so that the elbow section is easy to align with the end of the straight pipe section and then welded, and the elbow fixing component of this structure can be suitable for welding and fixing of exhaust pipes of different shapes, effectively improving the versatility of welding fixtures for automobile exhaust pipes.

[0017] In this embodiment, the vertical sliding seat 3, the circular pendulum seat 4, the radial sliding seat 5 and the tangential sliding seat 6 are all plate-like structures. The vertical sliding seat 3 is provided with a vertical adjustment hole 31 arranged vertically, the circular pendulum seat 4 is provided with an arc adjustment hole 41, the tangential sliding seat 6 is provided with a radial adjustment hole 51 arranged radially along the arc adjustment hole and a tangential adjustment hole 61 perpendicular to the radial adjustment hole, and the other side plate 7a of the L-shaped connecting plate 7 is provided with a transverse adjustment hole 71 along the length direction; the circular pendulum seat 4 is fixedly provided with a vertical locking bolt 32 passing through the vertical adjustment hole, and the circular pendulum seat 4 can also be fixedly provided with an auxiliary positioning rod passing through the vertical adjustment hole, and the radial sliding seat 5 is fixedly provided with a circular pendulum lock passing through the arc adjustment hole. The stop bolt 42 and the radial locking bolt 52 passing through the radial adjustment hole, the radial sliding seat 5 can also be fixedly provided with an auxiliary positioning rod passing through the arc adjustment hole, and one side plate of the L-shaped connecting plate 7 is fixedly provided with a tangential locking bolt 62 passing through the tangential adjustment hole; one side plate 7b of the L-shaped connecting plate 7 can also be fixedly provided with an auxiliary positioning rod passing through the tangential adjustment hole, and each auxiliary positioning rod cooperates with its corresponding locking bolt to prevent the two plates that cooperate with each other before locking from relative rotation, thereby realizing unidirectional sliding cooperation and at the same time, helping to ensure high stability after locking, and the mounting seat of the ball hinge 8 is fixedly provided with a transverse locking bolt passing through the transverse adjustment hole; the above structure is simple, easy to adjust and low cost.

[0018] In this embodiment, the nut of each locking bolt is fixedly provided with a handle to facilitate the locking operation.

[0019] In this embodiment, the elbow mounting block 9 is detachably fixedly installed on the ball hinge 8. The elbow mounting block 9 is provided with a mounting hole that matches the flange at the end of the elbow, and the elbow mounting block 9 is fixed to the flange at the end of the elbow by bolts. Different types of elbow sections only need to be based on the corresponding type of elbow mounting block 9, which is easy to use.

[0020] In this embodiment, the straight tube fixing assembly includes a straight tube base sleeve 10, a lower connecting rod 11, an upper connecting rod 12 and a U-shaped block 13. The straight tube fixing assembly is arranged in two groups along the length direction of the fixing rod 1. The lower end of the lower connecting rod is hinged to the straight tube base sleeve in a lockable and fixed manner, the lower end of the upper connecting rod is hinged to the upper end of the lower connecting rod in a lockable and fixed manner, and the upper end of the upper connecting rod is hinged to the U-shaped block in a lockable and fixed manner. The U-shaped block is provided with a locking bolt 14 for locking and fixing the straight tube section. As shown in the figure, the structure is simple and the adjustment is convenient.

[0021] In this embodiment, the end face of the fixing rod 1 is square, the straight tube base sleeve and the curved tube base sleeve 2 are both conformally outer sleeve fixing rod 1, and the straight tube base sleeve and the curved tube base sleeve 2 are both provided with locking threaded holes, and the locking threaded holes are used to lock and fix the straight tube base sleeve and the curved tube base sleeve 2 to the fixing rod 1 by installing the base locking nut; the side edges of the straight tube base sleeve and the curved tube base sleeve 2 are both protruding to form a locking boss 15, and the locking threaded holes are opened in the locking boss. This structure is conducive to achieving the stable fixation of the corresponding base sleeve.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A welding fixture for automobile exhaust pipe, Features: It includes a fixing rod, a straight tube fixing assembly and a bent tube fixing assembly installed on the fixing rod; the straight tube fixing assembly and the bent tube fixing assembly are both slidably matched with the fixing rod in a lockable and fixed manner; the bent tube fixing assembly is used to fix the bent tube to be welded and can adjust the spatial position and spatial angle of the bent tube so that the end face of the bent tube is opposite to the end face of the straight tube; the bent tube fixing assembly includes a bent tube base sleeve, a vertical sliding seat, a circular pendulum seat, a radial sliding seat, a tangential sliding seat, an L-shaped connecting plate, a ball hinge and a bent tube mounting block; the bent tube base sleeve is slidably matched with the fixing rod in a lockable and fixed manner, the circular pendulum seat is vertically slidably matched with the vertical sliding seat in a lockable and fixed manner, the radial sliding seat is slidably matched with the circular pendulum seat in a circular arc direction in a lockable and fixed manner, the tangential sliding seat is radially slidably matched with the radial sliding seat in a lockable and fixed manner, and one side plate of the L-shaped connecting plate is The mounting seat of the ball hinge is slidably matched with the other side plate of the L-shaped connecting plate along the length direction of the other side plate in a manner that can be locked and fixed; the other side plate of the L-shaped connecting plate is connected to the elbow mounting block through a ball hinge, and the ball hinge is a lockable ball hinge; the elbow mounting block is detachably fixed to the ball hinge, and the elbow mounting block is provided with a mounting hole that cooperates with the flange at the end of the elbow, and the elbow mounting block is fixed to the flange at the end of the elbow by bolts; the straight pipe fixing assembly includes a straight pipe base sleeve, a lower connecting rod, an upper connecting rod and a U-shaped block, the lower end of the lower connecting rod is hinged to the straight pipe base sleeve in a manner that can be locked and fixed, the lower end of the upper connecting rod is hinged to the upper end of the lower connecting rod in a manner that can be locked and fixed, and the upper end of the upper connecting rod is hinged to the U-shaped block in a manner that can be locked and fixed, and the U-shaped block is provided with a locking bolt for locking and fixing the straight pipe section.

2. The welding fixture for automobile exhaust pipe according to claim 1, Features: The vertical sliding seat, circular pendulum seat, radial sliding seat and tangential sliding seat are all plate-like structures. The vertical sliding seat is provided with vertical adjustment holes arranged vertically, the circular pendulum seat is provided with arc adjustment holes, the tangential sliding seat is provided with radial adjustment holes arranged radially along the arc adjustment holes and tangential adjustment holes perpendicular to the radial adjustment holes, and the other side plate of the L-shaped connecting plate is provided with transverse adjustment holes along the length direction; the circular pendulum seat is fixedly provided with a vertical locking bolt passing through the vertical adjustment hole, the radial sliding seat is fixedly provided with a circular pendulum locking bolt passing through the arc adjustment hole and a radial locking bolt passing through the radial adjustment hole, one side plate of the L-shaped connecting plate is fixedly provided with a tangential locking bolt passing through the tangential adjustment hole, and the mounting seat of the ball hinge is fixedly provided with a transverse locking bolt passing through the transverse adjustment hole.

3. The welding fixture for automobile exhaust pipe according to claim 2, Features: The nut of each locking bolt is fixedly provided with a handle.

4. The welding fixture for automobile exhaust pipe according to claim 1, Features: The end face of the fixing rod is square, and the straight tube base sleeve and the curved tube base sleeve are both conformally outer sleeves of the fixing rod and are both provided with locking threaded holes, which are used to lock and fix the straight tube base sleeve and the curved tube base sleeve to the fixing rod by installing a base locking nut.

5. The welding fixture for automobile exhaust pipe according to claim 4, Features: The side edges of the straight tube base sleeve and the curved tube base sleeve are both protruded to form a locking boss, and the locking threaded hole is arranged in the locking boss.

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