A convenient stainless steel pipe welding fixture

Abstract

The present invention belongs to the field of stainless steel pipe welding, and specifically is an easy-to-use stainless steel pipe welding clamp, comprising a clamp base, the top end of the clamp base is fixedly connected to multiple groups of support seats, the top ends of the support seats are fixedly connected to the front and rear sides of the clamp body, the front and rear sides of the clamp body are fixedly connected to extension columns, the extension columns are threaded with fixing bolts, the fixing bolts abut against the outer side of the stainless steel pipe, the stainless steel pipe is sleeved inside the clamp body, the bottom end of the stainless steel pipe abuts against two groups of sliding rods, the sliding rods are rotatably connected to the inner wall of the clamp body, and a lifting mechanism is arranged inside the clamp base, the lifting mechanism is used to open a groove on the stainless steel pipe; through the structural design of the lifting mechanism, the function of facilitating the opening of a groove at the position where the stainless steel pipe is to be welded is realized.

Description

Technical Field

[0001] The invention relates to the field of stainless steel pipe welding, in particular to a stainless steel pipe welding fixture which is easy to use. Background Art

[0002] The connection between different stainless steel pipes is mostly completed by welding. In order to avoid the displacement of the joints of the stainless steel pipes during the welding process, corresponding welding clamps are used to clamp and fix the stainless steel pipes.

[0003] According to the patent document CN202110261951.4, a stainless steel pipe welding fixture is proposed, including a base plate, a clamping and fixing mechanism and a butt feeding mechanism, a clamping and fixing mechanism is symmetrically installed on the middle of the upper end surface of the base plate, a butt feeding mechanism is arranged between the two clamping and fixing mechanisms, and the butt feeding mechanism is installed on the middle of the upper end surface of the base plate. The present invention can solve the problem that the existing stainless steel pipe welding fixture cannot stably clamp and lock stainless steel pipes of different diameters, which causes the stainless steel pipe to easily shift during welding, and there is a deviation during welding, which affects the accuracy of stainless steel pipe welding and has poor applicability. It can also solve the problem that the existing stainless steel pipe welding fixture cannot weld multiple stainless steel pipes to a pipe fitting at the same time, the welding efficiency is low, and the pipe fittings to be welded cannot be aligned before welding, which causes the pipe fittings after welding to be uneven, affecting the use and appearance coordination of the pipe fittings after welding.

[0004] However, although the stainless steel pipe welding fixture in the above technology is convenient for clamping and fixing the stainless steel pipe, before welding, in order to improve the welding strength of the stainless steel pipe, a groove is opened at the place to be welded, and the groove needs to be opened manually by the operator. Therefore, after the stainless steel pipe is fixed by the fixture, other tools are needed to open the groove before welding can be carried out. The operation steps are cumbersome and inconvenient, which affects the welding efficiency. Therefore, a convenient stainless steel pipe welding fixture is proposed to address the above problems. Summary of the invention

[0005] In order to solve the problem that the stainless steel pipe welding fixture in the above technology is convenient for clamping and fixing the stainless steel pipe, before welding, in order to improve the welding strength of the stainless steel pipe, a groove is opened at the place to be welded, and the groove needs to be opened manually by the operator. Therefore, after the stainless steel pipe is fixed by the fixture, other tools are needed to open the groove before welding can be carried out. The operation steps are cumbersome and inconvenient, which affects the efficiency of welding. Therefore, the present invention proposes an easy-to-use stainless steel pipe welding fixture.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the stainless steel pipe welding clamp described in the present invention is easy to use, including a clamp base, the top of the clamp base is fixedly connected to multiple groups of support seats, the top of the support seat is fixedly connected to the front and rear sides of the clamp body, the front and rear sides of the clamp body are fixedly connected with extension columns, the extension columns are threaded with fixing bolts, the fixing bolts abut against the outer side of the stainless steel pipe, the stainless steel pipe is sleeved inside the clamp body, the bottom end of the stainless steel pipe abuts against two groups of sliding rods, the sliding rods are rotatably connected to the inner wall of the clamp body, a lifting mechanism is arranged inside the clamp base, the lifting mechanism is used to open a groove on the stainless steel pipe, and a clamping mechanism and a protective mechanism are arranged on the clamp base, the clamping mechanism is used to clamp and fix the stainless steel pipe, and the protective mechanism is used to protect the stainless steel pipe.

[0007] Preferably, the lifting mechanism includes a worm, the worm is arranged inside the cavity, the front and rear sides of the worm are fixedly connected to the threaded rod, the front end of the threaded rod is fixedly connected to the rotating knob, and the rear end of the threaded rod is rotatably connected to the inner wall of the movable groove, the movable groove is communicated with the movable groove and the cavity, the cavity, the movable groove and the movable groove are all opened inside the fixture base, the top of the worm is meshed with a worm gear, the worm gear is fixedly connected to the support rod, the left and right sides of the support rod are rotatably connected to the inner wall of the cavity, the left and right sides of the support rod are fixedly connected with a rotating gear, one side of the rotating gear is meshed with a first rack, the top of the first rack is inserted in the through groove, the through groove is opened at the top of the fixture base, the through groove and the inner wall of the cavity are both provided with a trapezoidal groove, the inside of the trapezoidal groove is slidably connected with a trapezoidal block, the trapezoidal block is fixedly connected to the first rack, the top of the first rack is fixedly connected with a connecting frame, the top of the connecting frame is fixedly connected with a cutter head, and the cutter head is located below the stainless steel pipe.

[0008] Preferably, the clamping mechanism includes two groups of movable plates, the bottom ends of the movable plates are threadedly connected to the threaded rods, the two groups of threaded rods are provided with threads with opposite rotation directions, the top ends of the movable plates are slidably connected to the inside of the movable groove, the movable groove is rectangular in design, the top ends of the movable plates are fixedly connected to the clamping blocks, and one side of the clamping blocks fits against the surface of the stainless steel pipe.

[0009] Preferably, the guard mechanism includes two groups of guard plates, the top ends of the two groups of guard plates contact each other, one side of the guard plate is fixedly connected with an arc-shaped rack, the bottom end of the arc-shaped rack is meshed with a gear column, the gear column is rotatably connected with a fixed rod on a side away from the arc-shaped rack, the bottom end of the gear column is meshed with a second rack, the second rack is provided with two groups, a rectangular groove is opened on the second rack at the rear end, a connecting block is fixedly connected with the side of the second rack away from the fixed rod, the connecting block is fixedly connected to the clamping block, the bottom end of the guard plate is opened with a notch, the width of the notch is slightly larger than the width of the clamping block, the left and right sides of the guard plate are opened with an arc-shaped slide groove, the inner wall of the arc-shaped slide groove contacts with an arc-shaped slide block, the arc-shaped slide block is fixedly connected to the support frame, and the bottom ends of the support frame and the fixed rod are fixedly connected to the clamp base.

[0010] Preferably, two groups of long grooves are opened on the inner wall of the movable groove, and the long grooves are symmetrically distributed along the central axis of the clamp base. A baffle is slidably connected inside the long groove, and the baffle is trapezoidal in design. Two groups of springs are fixedly connected to the side of the baffle away from the movable plate, and the side of the spring away from the baffle is fixedly connected to the inner wall of the long groove.

[0011] Preferably, a plug hole is provided in the middle of the movable plate, a plug post is inserted into the plug hole, and both the front and rear sides of the plug post are fixedly connected to the inner wall of the movable groove.

[0012] Preferably, the outer side of the rotating knob is provided with an anti-slip cover, and the anti-slip cover is made of rubber material.

[0013] Preferably, two groups of fixing plates are arranged directly below the connecting frame, the fixing plates are rectangular in design, the fixing plates are fixedly connected to the top of the clamp base, and the spacing between the two groups of fixing plates is adapted to the width of the connecting frame.

[0014] Preferably, support rings are sleeved on both the front and rear sides of the worm, and the bottom end of the support ring is fixedly connected to the inner wall of the cavity.

[0015] Preferably, the bottom end of the second rack contacts a support plate, and the support plate is fixedly connected to a fixing rod.

[0016] The present invention is beneficial in that:

[0017] 1. The present invention realizes the function of facilitating the opening of the groove at the position to be welded of the stainless steel pipe through the structural design of the lifting mechanism, so that no other tools are needed to open the groove during welding, making the clamp more convenient to use, and solving the problem that the stainless steel pipe welding fixture in the prior art is convenient for clamping and fixing the stainless steel pipe, but before welding, in order to improve the welding strength of the stainless steel pipe, the stainless steel pipe will open the groove at the place to be welded, and the groove needs to be opened manually by the operator. Therefore, after the stainless steel pipe is fixed by the clamp, other tools need to be used to open the groove before welding can be carried out, and the operation steps are cumbersome and inconvenient, which affects the welding efficiency;

[0018] 2. The present invention realizes the function of clamping and fixing the stainless steel pipe through the structural design of the clamping mechanism, so that the stainless steel pipe can be fixed during the process of opening the groove, avoiding the shaking of the stainless steel pipe, which causes the position of the groove to be offset, solves the problem that the stainless steel pipe is prone to shaking when the groove is opened, and improves the stability of the stainless steel pipe when the groove is opened;

[0019] 3. The present invention realizes the function of blocking the sputtering sparks during the welding process of the stainless steel pipe through the structural design of the protection mechanism, so as to reduce the sparks from sputtering to the bottom of the stainless steel pipe, thereby reducing the generation of weld spots on the surface of the stainless steel pipe, while also protecting the operators and providing a relatively safe working space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the clamp body of the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the connection structure of the worm of the present invention;

[0025] Figure 5 It is a schematic diagram of the connection structure of the clamping block of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the protection mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the connection structure of the protective plate of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the top of the clamp base of the present invention;

[0029] Fig. 9 It is a schematic diagram of the connection structure of the cutter head of the present invention.

[0030] In the figure: 1. fixture base; 20. stainless steel pipe; 21. fixture body; 22. extension column; 23. fixing bolt; 24. sliding rod; 25. support seat; 26. cavity; 27. moving groove; 28. movable groove; 29. ​​anti-slip sleeve; 30. rotating knob; 31. threaded rod; 32. jack; 33. moving plate; 34. supporting ring; 35. worm; 36. rotating gear; 37. supporting rod; 38. worm wheel; 39. first rack; 40 , connecting frame; 41, cutter head; 42, trapezoidal block; 43, through groove; 44, trapezoidal groove; 45, clamping block; 46, connecting block; 47, second rack; 48, rectangular groove; 49, supporting frame; 50, arc-shaped slider; 51, arc-shaped rack; 52, protective plate; 53, notch; 54, arc-shaped slide groove; 55, gear column; 56, fixing rod; 57, supporting plate; 58, long groove; 59, plug column; 60, baffle; 61, spring; 62, fixing plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0032] See also Figure 1 - Fig. 9As shown, a convenient stainless steel pipe welding fixture comprises a fixture base 1, the top of the fixture base 1 is fixedly connected to a plurality of support seats 25, the tops of the support seats 25 are fixedly connected to the front and rear sides of the fixture body 21, the front and rear sides of the fixture body 21 are fixedly connected with extension columns 22, the extension columns 22 are threadedly connected with fixing bolts 23, the fixing bolts 23 abut against the outer side of the stainless steel pipe 20, the stainless steel pipe 20 is sleeved inside the fixture body 21, the bottom end of the stainless steel pipe 20 abuts against two groups of sliding rods 24, the sliding rods 24 are rotatably connected to the inner wall of the fixture body 21, the interior of the fixture base 1 is provided with a lifting mechanism, the clamping mechanism is used to open a groove on the stainless steel pipe 20, the fixture base 1 is provided with a clamping mechanism and a protective mechanism, the clamping mechanism is used to clamp and fix the stainless steel pipe 20, and the protective mechanism is used to protect the stainless steel pipe 20;

[0033] Furthermore, the lifting mechanism includes a worm 35, which is arranged inside the cavity 26, and the front and rear sides of the worm 35 are fixedly connected to the threaded rod 31, the front end of the threaded rod 31 is fixedly connected to the rotating knob 30, and the rear end of the threaded rod 31 is rotatably connected to the inner wall of the movable groove 27, and the movable groove 27 is connected to the movable groove 28 and the cavity 26, and the cavity 26, the movable groove 27 and the movable groove 28 are all opened inside the clamp base 1, and the top of the worm 35 is meshed with the worm wheel 38, and the worm wheel 38 is fixedly connected to the support rod 37, and the left and right sides of the support rod 37 are rotatably connected to the inner wall of the cavity 26 Then, the left and right sides of the support rod 37 are fixedly connected with a rotating gear 36, one side of the rotating gear 36 is meshed with the first rack 39, the top of the first rack 39 is inserted in the through slot 43, the through slot 43 is provided at the top of the fixture base 1, the through slot 43 and the inner wall of the cavity 26 are provided with a trapezoidal groove 44, the inside of the trapezoidal groove 44 is slidably connected with a trapezoidal block 42, the trapezoidal block 42 is fixedly connected to the first rack 39, the top of the first rack 39 is fixedly connected with a connecting frame 40, the top of the connecting frame 40 is fixedly connected with a cutter head 41, and the cutter head 41 is located below the stainless steel pipe 20;

[0034] Furthermore, the clamping mechanism includes two groups of movable plates 33, the bottom ends of the movable plates 33 are threadedly connected to the threaded rods 31, the two groups of threaded rods 31 are provided with threads with opposite rotation directions, the top ends of the movable plates 33 are slidably connected to the inside of the movable groove 28, the movable groove 28 is rectangular in design, the top ends of the movable plates 33 are fixedly connected to the clamping blocks 45, and one side of the clamping blocks 45 is in contact with the surface of the stainless steel pipe 20;

[0035] Furthermore, the protection mechanism includes two groups of protection plates 52, the top ends of the two groups of protection plates 52 are in contact with each other, one side of the protection plate 52 is fixedly connected with an arc-shaped rack 51, the bottom end of the arc-shaped rack 51 is meshed with a gear column 55, the side of the gear column 55 away from the arc-shaped rack 51 is rotatably connected with a fixed rod 56, the bottom end of the gear column 55 is meshed with a second rack 47, the second rack 47 is provided with two groups, and a rectangular groove 48 is opened on the rear end of the second rack 47, and the second rack 47 is provided with a plurality of gear columns 55. A connecting block 46 is fixedly connected to the side away from the fixing rod 56, and the connecting block 46 is fixedly connected to the clamping block 45. A notch 53 is provided at the bottom end of the protection plate 52, and the width of the notch 53 is slightly larger than the width of the clamping block 45. Arc-shaped slide grooves 54 are provided on both the left and right sides of the protection plate 52, and the inner wall of the arc-shaped slide groove 54 contacts the arc-shaped slider 50. The arc-shaped slider 50 is fixedly connected to the support frame 49, and the bottom ends of the support frame 49 and the fixing rod 56 are fixedly connected to the fixture base 1;

[0036] The stainless steel pipe welding fixture in the prior art is convenient for clamping and fixing the stainless steel pipe, but before welding, in order to improve the welding strength of the stainless steel pipe, a groove is opened at the place to be welded, and the groove needs to be opened manually by the operator. Therefore, after the stainless steel pipe is fixed by the fixture, other tools are needed to open the groove before welding can be carried out. The operation steps are cumbersome and inconvenient, which affects the welding efficiency. The structural design of the lifting mechanism realizes the function of opening the groove at the position to be welded of the stainless steel pipe 20, so that there is no need to use other tools to open the groove during welding, and the fixture can be easily installed. The use process is more convenient. During work, when the stainless steel pipe 20 is to be grooved, firstly, two groups of stainless steel pipes 20 are inserted into the clamp body 21 and docked together, and then the knob 30 at the front end of the clamp base 1 is turned to drive the threaded rod 31 inside the clamp base 1 to rotate, and the worm 35 is connected to the threaded rod 31, so that the worm 35 can be driven to rotate inside the cavity 26, and the top of the worm 35 is meshed with the worm wheel 38, so that the worm wheel 38 can be driven to rotate, and the worm wheel 38 is fixedly connected to the support rod 37, thereby driving the support rod 37 to rotate, and fixed on the left and right sides of the support rod 37. The rotating gear 36 will rotate synchronously, the rotating gear 36 will mesh with the first rack 39, and then drive the first rack 39 to move upward, the top of the first rack 39 will pass through the through slot 43, and the connecting frame 40 fixed on the top of the first rack 39 will gradually rise until the cutter head 41 fixed on the connecting frame 40 contacts the bottom ends of the two groups of stainless steel pipes 20. At this time, the two groups of stainless steel pipes 20 can be manually rotated, and the cutter head 41 can cut the surface of the stainless steel pipe 20. When the groove on the stainless steel pipe 20 is completed, the rotating knob 30 is rotated in the opposite direction again to drive the cutter head 41 to move downward to avoid subsequent welding. In the process, the cutter head 41 comes into contact with the weld on the stainless steel pipe 20, and the operation of opening the groove of the stainless steel pipe 20 is completed. The self-locking of the worm 35 and the worm wheel 38 can ensure that the cutter head 41 will not move downward due to the downward pressure, and ensure that the position height of the cutter head 41 will not change during the process of opening the groove. Trapezoidal grooves 44 are provided on the inner wall of the through groove 43 and the cavity 26. The trapezoidal block 42 slides in the trapezoidal groove 44, so that the first rack 39 can move stably in the vertical direction, thereby ensuring the correct engagement of the first rack 39 with the rotating gear 36, making the transmission more stable.

[0037] The structural design of the clamping mechanism realizes the function of clamping and fixing the stainless steel pipe 20, so that the stainless steel pipe 20 can be fixed in the process of opening the groove, avoiding the shaking of the stainless steel pipe 20, which causes the position of the groove to be offset, solves the problem that the stainless steel pipe 20 is prone to shaking when the groove is opened, and improves the stability of the stainless steel pipe 20 when the groove is opened. In the process of turning the rotating knob 30 to drive the cutter head 41 to lift upward, since the threaded rod 31 is provided with threads with opposite rotation directions, the moving plate 33 threadedly connected to the threaded rod 31 will move along the direction of the threaded rod 31, and the two sets of moving plates will move in the direction of the threaded rod 31. The movable plate 33 will gradually approach, the moving plate 33 will slide inside the movable groove 28, and the clamping block 45 fixed on the top of the moving plate 33 will gradually approach the stainless steel pipe 20 until the clamping block 45 contacts the surface of the stainless steel pipe 20. At this time, the front and rear sides of the stainless steel pipe 20 can be clamped and fixed by the two groups of clamping blocks 45. Similarly, when the rotating knob 30 is rotated in the opposite direction, the two groups of clamping blocks 45 will move away from each other, thereby releasing the clamping and fixing of the stainless steel pipe 20. An arc surface is provided on the top of the clamping block 45 to increase the contact area between the clamping block 45 and the stainless steel pipe 20, so that the clamping block 45 has a better clamping effect on the stainless steel pipe 20.

[0038] Through the structural design of the protective mechanism, the function of blocking the sputtering sparks during the welding process of the stainless steel pipe 20 is realized to reduce the sparks from sputtering to the bottom of the stainless steel pipe 20, thereby reducing the generation of welding spots on the surface of the stainless steel pipe 20. At the same time, it also protects the operators and provides a relatively safe working space. After the groove of the stainless steel pipe 20 is opened, the knob 30 is rotated in the opposite direction to move the two groups of clamping blocks 45 away from each other. The second rack 47 connected to the clamping block 45 will drive the gear column 55 to rotate, and the top of the gear column 55 is meshed with the arc rack 51, so that the arc rack 51 is driven to rotate through the gear column 55, and the arc rack 51 is fixed on the protective plate 52. At this time, the protective plate 52 will slide downward along the arc-shaped slider 50. At this time, the top ends of the two groups of protective plates 52 are no longer in contact, and the top ends of the stainless steel pipes 20 are exposed, so that when the two groups of stainless steel pipes 20 are welded, the two groups of protective plates 52 can be used to block the sparks generated during the welding process. A notch 53 is provided on the protective plate 52, and the notch 53 is used to prevent the bottom end of the protective plate 52 from abutting against the clamping block 45, thereby ensuring that the clamping block 45 can move normally. The second rack 47 is provided with two groups, one group of second racks 47 close to the first rack 39. In order to avoid abutting against the first rack 39, a rectangular groove 48 is provided on the group of second racks 47 to ensure the normal movement of the second rack 47.

[0039] Furthermore, two groups of long grooves 58 are formed on the inner wall of the movable groove 28, and the long grooves 58 are symmetrically distributed along the central axis of the clamp base 1. A baffle 60 is slidably connected inside the long groove 58, and the baffle 60 is trapezoidal in design. Two groups of springs 61 are fixedly connected to the side of the baffle 60 away from the movable plate 33, and the side of the spring 61 away from the baffle 60 is fixedly connected to the inner wall of the long groove 58;

[0040] During operation, metal debris is inevitably generated in the process of opening the groove. In order to prevent the metal debris from falling into the movable groove 27 through the movable groove 28 and affecting the normal operation of the threaded rod 31, a long groove 58 is opened on the inner wall of the movable groove 28. When the clamping block 45 clamps and fixes the stainless steel pipe 20, the baffle 60 sliding inside the long groove 58 will contact each other under the action of the spring 61, so as to close the movable groove 28 and block the metal debris. The baffle 60 is trapezoidal in design. When the clamping blocks 45 move away from each other, the movable plate 33 can smoothly push the baffle 60 to move to both sides by abutting against the inclined surface of the baffle 60. The spring 61 fixed on the baffle 60 will be compressed, and the baffle 60 will also be received in the long groove 58.

[0041] Furthermore, a plug hole 32 is provided in the middle of the movable plate 33, and a plug post 59 is inserted into the plug hole 32. Both the front and rear sides of the plug post 59 are fixedly connected to the inner wall of the movable groove 28.

[0042] During operation, when the movable plate 33 slides in the movable groove 28, the plug post 59 is inserted into the plug hole 32 to guide the movement of the movable plate 33 and ensure that the movable plate 33 does not shake during the movement.

[0043] Furthermore, the outer side of the rotating knob 30 is provided with an anti-slip cover 29, and the anti-slip cover 29 is made of rubber;

[0044] During operation, the anti-slip cover 29 is made of rubber material, so as to increase the friction between the hand and the rotating knob 30 when the rotating knob 30 is manually rotated, thereby ensuring that no slipping occurs during rotation.

[0045] Furthermore, two groups of fixing plates 62 are arranged directly below the connecting frame 40. The fixing plates 62 are rectangular in design and are fixedly connected to the top of the fixture base 1. The spacing between the two groups of fixing plates 62 is adapted to the width of the connecting frame 40.

[0046] During operation, when the first rack 39 drives the cutter head 41 to move downward to the bottom, the two sets of fixing plates 62 are used to protect the front and rear sides of the cutter head 41 to avoid scratches caused by accidentally touching the cutter head 41. Example

[0047] See also Figure 3 , Figure 6 and Figure 7 As shown, comparative example 1 is another embodiment of the present invention, the front and rear sides of the worm 35 are sleeved with support rings 34, and the bottom end of the support ring 34 is fixedly connected to the inner wall of the cavity 26;

[0048] During operation, the support ring 34 is designed to provide support for both sides of the worm 35 , so that when the threaded rod 31 drives the worm 35 to rotate, the worm 35 can stably rotate inside the cavity 26 .

[0049] The bottom end of the second rack 47 is in contact with the support plate 57, and the support plate 57 is fixedly connected to the fixing rod 56;

[0050] During operation, the bottom end of the second rack 47 contacts the support plate 57 , and the second rack 47 is supported by the support plate 57 , so that the second rack 47 and the gear column 55 remain in meshing engagement.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A convenient stainless steel pipe welding fixture, comprising a fixture base (1), the top of the fixture base (1) is fixedly connected to a plurality of support seats (25), the tops of the support seats (25) are fixedly connected to the front and rear sides of the fixture body (21), the front and rear sides of the fixture body (21) are fixedly connected to extension columns (22), the extension columns (22) are threadedly connected to fixing bolts (23), the fixing bolts (23) are in contact with the outer side of the stainless steel pipe (20), the stainless steel pipe (20) is sleeved inside the fixture body (21), the bottom end of the stainless steel pipe (20) is in contact with two sets of sliding rods (24), the sliding rods (24) are rotatably connected to the inner wall of the fixture body (21), and the characteristics are: A lifting mechanism is arranged inside the clamp base (1), the lifting mechanism is used to open a groove on the stainless steel pipe (20), and a clamping mechanism and a protection mechanism are arranged on the clamp base (1), the clamping mechanism is used to clamp and fix the stainless steel pipe (20), and the protection mechanism is used to protect the stainless steel pipe (20); The protection mechanism comprises two groups of protection plates (52), the top ends of the two groups of protection plates (52) are in contact with each other, one side of the protection plate (52) is fixedly connected with an arc-shaped rack (51), the bottom end of the arc-shaped rack (51) is meshed with a gear column (55), the side of the gear column (55) away from the arc-shaped rack (51) is rotatably connected with a fixed rod (56), the bottom end of the gear column (55) is meshed with a second rack (47), two groups of the second rack (47) are provided, a rectangular groove (48) is provided on the rear end of the second rack (47), and the second rack (47) is away from the fixed rod (56). A connecting block (46) is fixedly connected to one side of the rod (56), and the connecting block (46) is fixedly connected to the clamping block (45). A notch (53) is provided at the bottom end of the protective plate (52), and the width of the notch (53) is slightly larger than the width of the clamping block (45). Arc-shaped sliding grooves (54) are provided on both the left and right sides of the protective plate (52), and the inner wall of the arc-shaped sliding groove (54) contacts the arc-shaped slider (50). The arc-shaped slider (50) is fixedly connected to the support frame (49), and the bottom ends of the support frame (49) and the fixed rod (56) are fixedly connected to the clamp base (1).

2. The convenient stainless steel pipe welding fixture according to claim 1 is characterized in that: The lifting mechanism comprises a worm (35), the worm (35) being arranged inside the cavity (26), the front and rear sides of the worm (35) being fixedly connected to the threaded rod (31), the front end of the threaded rod (31) being fixedly connected to the rotating knob (30), the rear end of the threaded rod (31) being rotatably connected to the inner wall of the movable groove (27), the movable groove (27) being connected to the movable groove (28) and the cavity (26), the cavity (26), the movable groove (27) and the movable groove (28) being all arranged inside the fixture base (1), the top end of the worm (35) being meshed with a worm wheel (38), the worm wheel (38) being fixedly connected to the support rod (37), and the left and right sides of the support rod (37) being rotatably connected to the inner wall of the cavity (26). The left and right sides of the support rod (37) are fixedly connected with a rotating gear (36), one side of the rotating gear (36) is meshed with a first rack (39), the top end of the first rack (39) is inserted into a through groove (43), the through groove (43) is provided at the top end of the clamp base (1), the through groove (43) and the inner wall of the cavity (26) are both provided with a trapezoidal groove (44), the inside of the trapezoidal groove (44) is slidably connected with a trapezoidal block (42), the trapezoidal block (42) is fixedly connected to the first rack (39), the top end of the first rack (39) is fixedly connected with a connecting frame (40), the top end of the connecting frame (40) is fixedly connected with a cutter head (41), and the cutter head (41) is located below the stainless steel pipe (20).

3. The convenient stainless steel pipe welding fixture according to claim 1 is characterized in that: The clamping mechanism comprises two groups of movable plates (33), the bottom ends of the movable plates (33) are threadedly connected to the threaded rods (31), the two groups of threaded rods (31) are provided with threads with opposite rotation directions, the top ends of the movable plates (33) are slidably connected to the inside of the movable groove (28), the movable groove (28) is rectangular in design, and the top ends of the movable plates (33) are fixedly connected to the clamping blocks (45), and one side of the clamping blocks (45) is in contact with the surface of the stainless steel pipe (20).

4. The convenient stainless steel pipe welding fixture according to claim 2 is characterized in that: Two groups of long grooves (58) are provided on the inner wall of the movable groove (28), and the long grooves (58) are symmetrically distributed along the central axis of the clamp base (1). A baffle (60) is slidably connected inside the long groove (58), and the baffle (60) is trapezoidal in design. Two groups of springs (61) are fixedly connected to the side of the baffle (60) away from the movable plate (33), and the side of the spring (61) away from the baffle (60) is fixedly connected to the inner wall of the long groove (58).

5. The convenient stainless steel pipe welding fixture according to claim 4 is characterized in that: A plug hole (32) is provided in the middle of the movable plate (33), a plug post (59) is inserted into the plug hole (32), and both the front and rear sides of the plug post (59) are fixedly connected to the inner wall of the movable groove (28).

6. The convenient stainless steel pipe welding fixture according to claim 2 is characterized in that: The outer side of the rotating knob (30) is provided with an anti-slip sleeve (29), and the anti-slip sleeve (29) is made of rubber material.

7. The convenient stainless steel pipe welding fixture according to claim 2 is characterized in that: Two groups of fixing plates (62) are arranged directly below the connecting frame (40). The fixing plates (62) are of rectangular design. The fixing plates (62) are fixedly connected to the top of the clamp base (1). The spacing between the two groups of fixing plates (62) is adapted to the width of the connecting frame (40).

8. The convenient stainless steel pipe welding fixture according to claim 2 is characterized in that: Support rings (34) are sleeved on both the front and rear sides of the worm (35), and the bottom end of the support ring (34) is fixedly connected to the inner wall of the cavity (26).

9. The convenient stainless steel pipe welding fixture according to claim 1, characterized in that: The bottom end of the second rack (47) contacts the support plate (57), and the support plate (57) is fixedly connected to the fixing rod (56).

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