CN118404234A - Bent pipe welding device for processing metal material products - Google Patents

Abstract

The invention discloses a bent pipe welding device for processing metal material products, which comprises a bottom plate, wherein a sliding plate is fixedly arranged in the center of the top surface of the bottom plate, and the top of the sliding plate is in sliding fit with a sliding frame. According to the invention, the two rotating frames are adjusted to be in parallel state through the annular size, the inner side ends of the two bent pipes are mutually attached, the joint of the two bent pipes is correspondingly welded by utilizing the welding head of the welding gun, the second nut is unscrewed, the plurality of balls synchronously rotate in the isolation groove by utilizing the annular ring, the balls slide in the isolation groove by utilizing the second supporting rod, the second supporting rod is correspondingly matched with the isolation groove, the rotation stability of the rotating structure in the horizontal direction can be ensured, the balls limit the annular clamp by utilizing the first supporting rod and the rotating sleeve, the bent pipes are synchronously rotated by utilizing the annular clamp, and at the moment, the rotating structure drives the bent pipes to rotate, so that the welding head of the welding gun can conveniently carry out comprehensive welding treatment on the attached parts of the two bent pipes, the labor intensity of welders is reduced, and the working efficiency of bent pipe welding is improved.

Description

A pipe bending welding device for processing metal products

Technical Field

The invention belongs to the technical field of metal pipe bend welding, and in particular relates to a pipe bend welding device for processing metal material products.

Background technique

When a pipeline is used as a carrier for conveying a medium flow, it is often necessary to bend due to terrain reasons. Usually, the bending of the pipeline is achieved by using a joint or welding two pipelines in different directions.

The public document (CN107649809A) discloses a welding tool for bent pipes. Two bent pipes to be welded are placed on two tools. The two tools are moved to butt the pipe ends of the two bent pipes. The welding gun is aimed at the butt joint of the pipe ends, which facilitates the butt joint of the pipe ends of the bent pipes and achieves a good butt joint effect. The tool places the welding ends of the two bent pipes in a suspended state, which is convenient for workers to weld during the welding process.

When welding, first clamp the two elbows in their respective elbow clamps and butt their welding ends, spot weld and fix the upper part of the elbow, first weld the upper part of the pipe body, and then the welder lies under the elbow to perform overhead welding on the elbow, which has high labor intensity and low work efficiency.

Therefore, it is necessary to invent a kind of bending pipe welding device for metal product processing to solve the above problems.

Summary of the invention

In view of the above problems, the present invention provides a bent pipe welding device for processing metal products to solve the problems raised in the above background technology.

To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bend pipe welding device for processing metal material products, comprising a base plate, a slide plate is fixedly arranged at the center of the top surface of the base plate, a slide frame is slidably matched at the top of the slide plate, and a welding gun is fixedly connected to the top of the slide frame, pillars are vertically fixedly arranged on both sides of the slide plate, a rotating frame is rotatably connected to the top of the pillar, and the rotating frame is limited to the convex rod at the top of the pillar by a first nut, and a clamping device for limiting the bend pipe is arranged at the end of the rotating frame, the end of the bend pipe passes through the center of the clamping device, and the inner ends of the two bends are relatively fitted, and the welding head of the welding gun is correspondingly located at the fitting position of the two inner ends of the bends.

Furthermore, curved grooves are provided on both sides of the top surface of the base plate, the two curved grooves are arranged opposite to each other, and the top surface of the curved groove is provided with a peripheral edge in a ring shape, the peripheral edge is provided as a whole with the top surface of the base plate, a movable groove is provided at the bottom of the inner side of the curved groove, the top opening of the movable groove is provided corresponding to the peripheral edge, and the centers of the end surfaces at both ends of the inner side of the movable groove are fixedly connected by a curved rod, a slide is provided inside the movable groove, and the top end of the slide is fixedly connected to the bottom of the clamping device, and the clamping device utilizes the slide to slide with the movable groove.

Furthermore, the clamping device includes a first frame plate and a second frame plate, the first frame plate and the second frame plate are arranged opposite to each other, and the end of the rotating frame is fixedly connected to the rear side of the circumferential outer side surface of the first frame plate and the second frame plate respectively, and the bottom of the circumferential outer side surface of the first frame plate and the second frame plate is fixedly connected to the top of the slide, a certain partition groove is formed between the first frame plate and the second frame plate, the first frame plate and the second frame plate are rotatably connected to a rotating structure by utilizing the partition groove, and the first frame plate and the second frame plate limit the clamping of the bent pipe by utilizing the rotating structure.

Furthermore, the rotating structure includes a plurality of inner clamping blocks, which are arranged in a circular manner with equal distances at the center of the first frame plate and the second frame plate, both ends of the inner clamping blocks are provided with through grooves, and the inner clamping blocks are correspondingly sleeved with connecting rods using the two through grooves, the two opposite connecting rods of two adjacent inner clamping blocks are fixedly connected using elastic strips, and the inner clamping blocks, connecting rods and elastic strips are combined into an annular clamp, and the rotating structure uses the annular clamp to limit the clamping of the bent pipe.

Furthermore, a convex head is fixedly provided at the center of the outer side surface of the inner clamping block, a swivel sleeve is rotatably sleeved on the surface of the convex head, and a ring strip is annularly provided on the circumferential side surface of the convex head, and an annular groove is provided on the circumferential inner side surface of the inner end of the swivel sleeve for rotatably cooperating with the ring strip, and the swivel sleeve rotatably cooperates with the ring strip of the convex head by utilizing the annular groove, the outer end of the swivel sleeve is spirally sleeved on the surface of the first support rod, one end of the first support rod is inside the swivel sleeve, and a spring is sleeved on the surface of the first support rod, the outer end of the spring is correspondingly fitted with the inner side surface of the circumference of the outer end of the swivel sleeve, and the inner end of the spring is fitted with the inner end of the first support rod.

Furthermore, the rotating structure also includes a plurality of balls, and the plurality of balls are arranged in a one-to-one correspondence with the plurality of inner clamping blocks, and the outer end of the first support rod is fixedly connected to the surface of the ball, and the plurality of balls are fixedly connected by a circular ring, and the midpoint of the circular ring coincides with the midpoint of the partition groove, and a second support rod is fixedly connected to the circumferential surface of the ball, the center lines of the first support rod and the second support rod coincide, and the second support rod passes through the partition groove, and a second nut is spirally sleeved on the surface of the second support rod, and the inner side surface of the second nut corresponds to and fits with the outer side surfaces of the circumference of the first frame plate and the second frame plate.

Furthermore, clamping rods are fixedly connected on both sides of the circumference of the sphere, and grooves corresponding to the clamping rods are provided on the inner sides of the circumferences opposite to each other of the first frame plate and the second frame plate. The sphere slides in cooperation with the clamping rods and the ends of the clamping rods are correspondingly fitted with the inner sides of the grooves.

Furthermore, annular dimensions are provided on both sides of the top surface of the bottom plate, and the center point of the annular dimensions is the center point of the pillar, and the annular dimensions are located inside the circumference of the surrounding edge.

Furthermore, the surrounding edge is made of rubber material, and the bottoms of the first frame plate and the second frame plate do not contact the surrounding edge.

Technical effects and advantages of the present invention:

1. The present invention adjusts the two rotating frames to a parallel state through the annular size, the inner ends of the two bent pipes are fitted together, the welding head of the welding gun is used to weld the connection points of the two bent pipes accordingly, and the second nut is loosened. A plurality of balls are synchronously rotated inside the partition groove using the annular ring, and the balls slide inside the partition groove using the second support rod, and the second support rod and the partition groove are matched accordingly, which can ensure the rotation stability of the rotating structure in the horizontal direction. The balls are limited by the first support rod and the rotating sleeve to the annular clamp, and the annular clamp is used to drive the bent pipe to rotate synchronously. At this time, the rotating structure drives the bent pipe to rotate, which is convenient for the welding head of the welding gun to perform comprehensive welding processing on the fitting points of the two bent pipes, thereby reducing the labor intensity of the welder and improving the working efficiency of the bent pipe welding.

2. When clamping the bent pipe, the present invention pushes the inner clamping block to move at the center of the first frame plate and the second frame plate, and multiple inner clamping blocks are separated from each other. At this time, the two adjacent inner clamping blocks use the connecting rod to pull the elastic strip, and the elastic strip gradually deforms during the pulling process. Until the inner clamping block can no longer move, the bent pipe is placed in the center of the annular clamp, and the inner clamping block is pushed in the reverse direction to move. The inner ends of the multiple inner clamping blocks gradually contact the circumferential outer side surface of the bent pipe, and the elastic strip gradually fits the circumferential side surface of the bent pipe, which makes it convenient for the rotating structure to use the annular clamp to clamp bent pipes with different outer diameters, thereby improving the adaptability of the rotating structure to bent pipes with different outer diameters.

3. In the present invention, after multiple balls are fixedly connected by circular rings, the balls cannot roll inside the partition grooves. When the position of the balls needs to be limited, the second nut is tightened. The spiral effect of the second nut and the second support rod makes the inner side surface of the second nut fit tightly with the outer circumferential side surfaces of the first frame plate and the second frame plate. The static friction between the second nut and the first frame plate and the second frame plate is used to prevent the balls from rotating inside the partition grooves, thereby limiting the position of the balls. The first support rod at the inner end of the multiple balls cooperates with the rotating sleeve to facilitate limiting the clamping effect of the annular clamp on bent pipes with different outer diameters, thereby ensuring the stability of the bent pipes during welding.

Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are 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.

FIG1 shows a schematic diagram of the overall structure of a bent pipe welding device for processing metal product according to an embodiment of the present invention;

FIG2 is a schematic diagram showing the structure of the top surface component of the bottom plate according to an embodiment of the present invention;

FIG3 is a schematic diagram showing a partial cross-sectional structure of a bent pipe welding device for processing metal product according to an embodiment of the present invention;

FIG4 shows an enlarged view of the structure of section A in FIG3 according to an embodiment of the present invention;

In the figure: 1, bottom plate; 2, slide plate; 3, slide frame; 4, welding gun; 5, pillar; 6, rotating frame; 7, first nut; 8, bent pipe; 9, bent groove; 10, surrounding edge; 11, movable groove; 12, bent rod; 13, sliding frame; 14, first frame plate; 15, second frame plate; 16, partition groove; 17, inner clamping block; 18, through groove; 19, connecting rod; 20, elastic strip; 21, protrusion; 22, rotating sleeve; 23, first support rod; 24, spring; 25, ball; 26, ring; 27, second support rod; 28, second nut; 29, clamping rod; 30, groove; 31, ring size.

Detailed ways

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

The present invention provides a bend pipe welding device for processing metal material products, as shown in Figures 1-2, comprising a base plate 1, a slide plate 2 is fixedly arranged at the center of the top surface of the base plate 1, a slide frame 3 is slidably matched with the top of the slide plate 2, and a welding gun 4 is fixedly connected to the top of the slide frame 3, pillars 5 are vertically fixedly arranged on both sides of the slide plate 2, a rotating frame 6 is rotatably connected to the top of the pillar 5, and the rotating frame 6 is limited to the convex rod at the top of the pillar 5 by a first nut 7, and a clamping device for limiting the bend pipe 8 is arranged at the end of the rotating frame 6, the end of the bend pipe 8 passes through the center of the clamping device, and the inner ends of the two bends 8 are relatively fitted, and the welding head of the welding gun 4 is correspondingly located at the fitting position of the inner ends of the two bends 8. The bent pipe 8 is clamped by the clamping device, and the rotating frame 6 rotates with the protruding rod at the top of the pillar 5 as the center until the inner ends of the two bent pipes 8 are relatively fitted, pushing the sliding frame 3 to move on the top of the slide plate 2, and the welding head of the welding gun 4 at the top of the sliding frame 3 gradually approaches the fitting of the inner ends of the two bent pipes 8, and the welding gun 4 is started, so as to facilitate the corresponding welding of the connection of the two bent pipes 8 using the welding head of the welding gun 4. When the inner ends of the two bent pipes 8 are fitted, the first nut 7 is screwed, and the spiral effect of the first nut 7 and the protruding rod is used to fix the rotating frame 6 on the top of the pillar 5, so as to prevent the rotating frame 6 from rotating during the welding of the bent pipe 8 and improve the stability of the bent pipe 8 during the welding process.

In Fig. 1 to Fig. 3, curved grooves 9 are provided on both sides of the top surface of the bottom plate 1, and the two curved grooves 9 are arranged opposite to each other, and the top surface of the curved groove 9 is provided with a peripheral edge 10 in an annular manner, and the peripheral edge 10 is provided as a whole with the top surface of the bottom plate 1, and a movable groove 11 is provided at the bottom of the inner side of the curved groove 9, and the top opening of the movable groove 11 is provided corresponding to the peripheral edge 10, and the centers of the inner end surfaces of the two ends of the movable groove 11 are fixedly connected by a curved rod 12, and a slide 13 is provided inside the movable groove 11, and the top end of the slide 13 is fixedly connected to the bottom of the clamping device, and the clamping device uses the slide 13 to slide with the movable groove 11. When the clamping device is pushed to move by the rotating frame 6, the clamping device uses the slide 13 at the bottom to slide synchronously inside the movable groove 11, and the movable groove 11 uses the curved rod 12 to limit the slide 13 to prevent the slide 13 from shaking arbitrarily during the movement inside the movable groove 11, and the top end of the slide 13 is fixedly connected to the clamping device. If the center of the bend 8 coincides with the center of the bend groove 9, the inner end of the bend 8 is clamped by the clamping device. At this time, the bend 8 is at the top of the bend groove 9, and the corresponding directions of the bend 8 and the bend groove 9 are the same. After the two bends 8 are welded together by the welding head of the welding gun 4, the clamping device for the bend 8 is released, the first nut 7 is loosened, and the two rotating frames 6 are pushed to move. The rotation directions of the two rotating frames 6 are opposite, and the rotating frames 6 push the clamping device to slide on the surface of the bend 8 during the rotation process until the clamping device slides to the outer end of the bend 8, so that the two welded bends 8 can be quickly removed from the entire welding device, thereby improving the speed of welding and picking up the bend 8.

In Figures 1 and 3, the clamping device includes a first frame plate 14 and a second frame plate 15, the first frame plate 14 and the second frame plate 15 are arranged opposite to each other, and the ends of the rotating frame 6 are fixedly connected to the rear sides of the circumferential outer sides of the first frame plate 14 and the second frame plate 15 respectively, and the bottoms of the circumferential outer sides of the first frame plate 14 and the second frame plate 15 are fixedly connected to the top of the slide 13, and a certain partition groove 16 is formed between the first frame plate 14 and the second frame plate 15, and the first frame plate 14 and the second frame plate 15 are rotatably connected with a rotating structure by using the partition groove 16, and the first frame plate 14 and the second frame plate 15 use the rotating structure to limit the clamping of the bent pipe 8. The first frame plate 14 and the second frame plate 15 are fixed by using the end of the rotating frame 6 and the top of the slide 13, so that a certain distance is always maintained between the first frame plate 14 and the second frame plate 15. When the two rotating frames 6 are arranged in parallel and the distance between the two clamping devices is short, after the bent pipe 8 is clamped by the rotating structure, the inner ends of the two bent pipes 8 are fitted together, and the welding head of the welding gun 4 welds the fitting part of the two bent pipes 8. When it is necessary to weld other parts of the fitting part, the bent pipe 8 is rotated, and the rotating structure drives the bent pipe 8 to rotate inside the partition groove 16. At this time, the fitting part of the two bent pipes 8 corresponds to the welding head during the rotation process, which is convenient for the welding head to fully weld the fitting part of the two bent pipes 8, thereby improving the welding efficiency of the two bent pipes 8.

In Figures 3 and 4, the rotating structure includes a plurality of inner clamping blocks 17, which are arranged in a circular manner and equidistantly at the center of the first frame plate 14 and the second frame plate 15, and through grooves 18 are provided at both ends of the inner clamping blocks 17. The inner clamping blocks 17 are correspondingly sleeved with connecting rods 19 using the two through grooves 18, and the two opposite connecting rods 19 of two adjacent inner clamping blocks 17 are fixedly connected at both ends using elastic strips 20, and the inner clamping blocks 17, the connecting rods 19 and the elastic strips 20 are combined into an annular clamp, and the rotating structure uses the annular clamp to limit and clamp the bent pipe 8. When clamping the bent pipe 8, the inner clamp block 17 is pushed to move at the center of the first frame plate 14 and the second frame plate 15, and the multiple inner clamp blocks 17 are separated from each other. At this time, the two adjacent inner clamp blocks 17 use the connecting rod 19 to pull the elastic strip 20, and the elastic strip 20 gradually deforms during the pulling process. Until the inner clamp block 17 can no longer move, the bent pipe 8 is placed in the center of the annular clamp, and the inner clamp block 17 is pushed in the reverse direction to move. The inner ends of the multiple inner clamp blocks 17 gradually contact the circumferential outer side surface of the bent pipe 8, and the elastic strip 20 gradually fits the circumferential side surface of the bent pipe 8, which makes it convenient for the rotating structure to use the annular clamp to clamp the bent pipes 8 with different outer diameters, thereby improving the adaptability of the rotating structure to the bent pipes 8 with different outer diameters.

In Figure 4, a convex head 21 is fixedly provided at the center of the outer side surface of the inner clamping block 17, and a rotating sleeve 22 is rotatably sleeved on the surface of the convex head 21, and a ring strip is annularly provided on the circumferential side surface of the convex head 21, and an annular groove rotatably matched with the ring strip is provided on the inner side surface of the inner end of the circumference of the rotating sleeve 22. The rotating sleeve 22 rotatably cooperates with the ring strip of the convex head 21 by utilizing the annular groove, and the outer end of the rotating sleeve 22 is spirally sleeved on the surface of the first support rod 23, one end of the first support rod 23 is inside the rotating sleeve 22, and a spring 24 is sleeved on the surface of the first support rod 23, the outer end of the spring 24 is correspondingly fitted with the inner side surface of the circumference of the outer end of the rotating sleeve 22, and the inner end of the spring 24 is fitted with the inner end of the first support rod 23. When the position of the inner clamp 17 needs to be adjusted, the rotating sleeve 22 is rotated, and the spiral effect of the rotating sleeve 22 and the first support rod 23 causes the rotating sleeve 22 to move on the surface of the first support rod 23. When the first support rod 23 gradually moves out from the inside of the rotating sleeve 22, the inner end of the rotating sleeve 22 rotates on the ring surface of the protruding head 21 using the annular groove, and the annular clamps cooperate with each other to prevent the rotating sleeve 22 from driving the protruding head 21 to rotate synchronously during the rotation process. When multiple rotating sleeves 22 rotate to push multiple inner clamps 17 closer to each other, the spiral effect of the rotating sleeve 22 and the first support rod 23 can increase the clamping force of the inner clamp 17 on the bent pipe 8, thereby improving the stability of the bent pipe 8 inside the annular clamp. The number of rotations of the rotating sleeve 22 and the first support rod 23 can be adjusted in real time according to the outer diameter of the curved pipe 8. When the outer diameter of the curved pipe 8 is small, the number of rotations of the rotating sleeve 22 on the surface of the first support rod 23 is large. When the outer diameter of the curved pipe 8 is large, the number of rotations of the rotating sleeve 22 on the surface of the first support rod 23 is small. The number of rotations of the rotating sleeve 22 is adjusted in real time according to the outer diameter of the curved pipe 8, so that the inner side surface of the inner clamping block 17 can be closely fitted with the outer side surface of the circumference of the curved pipe 8 driven by the rotating sleeve 22.

In Figures 3 and 4, the rotating structure also includes a plurality of balls 25, and the plurality of balls 25 are arranged in a one-to-one correspondence with the plurality of inner clamping blocks 17, and the outer end of the first support rod 23 is fixedly connected to the surface of the ball 25, and the plurality of balls 25 are fixedly connected by a ring 26, and the midpoint of the ring 26 coincides with the midpoint of the partition groove 16, and a second support rod 27 is fixedly connected to the circumferential surface of the ball 25, the center lines of the first support rod 23 and the second support rod 27 coincide, and the second support rod 27 passes through the partition groove 16, and a second nut 28 is spirally sleeved on the surface of the second support rod 27, and the inner side surface of the second nut 28 corresponds to and fits with the outer circumferential surfaces of the first frame plate 14 and the second frame plate 15. After the multiple balls 25 are fixedly connected by the ring 26, the balls 25 cannot roll inside the groove 16. When the position of the balls 25 needs to be limited, the second nut 28 is tightened. The spiral effect of the second nut 28 and the second support rod 27 makes the inner side of the second nut 28 fit tightly with the outer side of the circumference of the first frame plate 14 and the second frame plate 15. The static friction between the second nut 28 and the first frame plate 14 and the second frame plate 15 is used to prevent the balls 25 from rotating inside the groove 16, thereby limiting the position of the balls 25. The first support rod 23 at the inner end of the multiple balls 25 cooperates with the rotating sleeve 22 to facilitate limiting the clamping effect of the annular clamp on the bent pipes 8 with different outer diameters, thereby ensuring the stability of the bent pipes 8 during welding. When the bent pipe 8 needs to be rotated, the second nut 28 is screwed. At this time, the inner side of the second nut 28 does not contact the outer side of the circumference of the first frame plate 14 and the second frame plate 15. Multiple balls 25 rotate synchronously inside the groove 16 using the ring 26. The balls 25 slide inside the groove 16 using the second support rod 27, and the second support rod 27 corresponds to the groove 16 to ensure the rotation stability of the rotating structure in the horizontal direction. The balls 25 use the first support rod 23 and the rotating sleeve 22 to limit the annular clamp, and the annular clamp is used to drive the bent pipe 8 to rotate synchronously. At this time, the rotating structure drives the bent pipe 8 to rotate, which is convenient for the welding head of the welding gun 4 to perform comprehensive welding processing on the fitting parts of the two bent pipes 8.

In Fig. 4, the two sides of the circumference of the ball 25 are fixedly connected with a clamping rod 29, and the inner side surfaces of the circumferences of the first frame plate 14 and the second frame plate 15 are provided with grooves 30 corresponding to the clamping rod 29. The ball 25 slides with the groove 30 by means of the clamping rod 29, and the end of the clamping rod 29 is correspondingly fitted with the inner side surface of the groove 30. When the rotating structure rotates inside the partition groove 16, the ball 25 slides inside the groove 30 by means of the clamping rod 29, and the groove 30 limits the end of the clamping rod 29, so as to avoid horizontal shaking of the ball 25 during the rotation inside the partition groove 16, and further improve the stability of the rotation of the rotating structure.

In FIG. 1 and FIG. 2 , an annular dimension 31 is provided on both sides of the top surface of the bottom plate 1, and the center point of the annular dimension 31 is the center point of the pillar 5, and the annular dimension 31 is located inside the circumference of the surrounding edge 10. After the rotating frame 6 clamps the bent pipe 8 using the clamping device, the annular dimension 31 is used to facilitate the adjustment of the two rotating frames 6 to a parallel state, which can improve the fitting effect of the inner ends of the two bent pipes 8 and avoid a large gap at the fitting of the inner ends of the two bent pipes 8.

In Fig. 1 and Fig. 2, the surrounding edge 10 is made of rubber material, and the bottoms of the first frame plate 14 and the second frame plate 15 do not contact the surrounding edge 10. The surrounding edge 10 is used to protect the inside of the movable groove 11 to prevent external parts from rolling from the top surface of the bottom plate 1 into the movable groove 11 and to prevent the parts from blocking the slide 13 from sliding inside the movable groove 11.

Working principle of the present invention:

With reference to Figures 1-4 of the specification, the annular size 31 is used to conveniently adjust the two rotating frames 6 to a parallel state, and the first nut 7 is screwed, and the rotating frame 6 is fixed to the top of the pillar 5 by the spiral effect of the first nut 7 and the protruding rod, and the rotating sleeve 22 is rotated. The spiral effect of the rotating sleeve 22 and the first support rod 23 causes the rotating sleeve 22 to move on the surface of the first support rod 23. When the first support rod 23 gradually moves out from the inside of the rotating sleeve 22, the inner end of the rotating sleeve 22 rotates on the ring surface of the protruding head 21 by means of the annular groove, and the annular clamps cooperate with each other to prevent the rotating sleeve 22 from driving the protruding head 21 to rotate synchronously during the rotation process. When multiple rotating sleeves 22 rotate and push multiple inner clamping blocks 17 to approach each other, the spiral effect of the rotating sleeve 22 and the first support rod 23 can be used to increase the clamping force of the inner clamping block 17 on the bent pipe 8, thereby improving the stability of the bent pipe 8 inside the annular clamp.

When the inner ends of the two curved pipes 8 are relatively close to each other, the first nut 7 is screwed, and the spiral effect of the first nut 7 and the convex rod is used to fix the rotating frame 6 on the top of the pillar 5, so as to prevent the rotating frame 6 from rotating during the welding of the curved pipe 8, thereby improving the stability of the curved pipe 8 during the welding process. The sliding frame 3 is pushed to move on the top of the slide plate 2, and the welding head of the welding gun 4 on the top of the sliding frame 3 gradually approaches the close connection of the inner ends of the two curved pipes 8, and the welding gun 4 is started, so as to facilitate the use of the welding head of the welding gun 4 to weld the connection of the two curved pipes 8 accordingly.

The center of the bend 8 coincides with the center of the bend groove 9, and the corresponding directions of the bend 8 and the bend groove 9 are the same. The second nut 28 is screwed. At this time, the inner side of the second nut 28 does not contact the outer side of the circumference of the first frame plate 14 and the second frame plate 15. Multiple balls 25 rotate synchronously inside the partition groove 16 using the ring 26. The balls 25 slide inside the partition groove 16 using the second support rod 27, and the second support rod 27 corresponds to the partition groove 16 to ensure the rotation stability of the rotating structure in the horizontal direction. The balls 25 use the first support rod 23 and the rotating sleeve 22 to limit the annular clamp, and the annular clamp is used to drive the bend 8 to rotate synchronously. At this time, the rotating structure drives the bend 8 to rotate, which is convenient for the welding head of the welding gun 4 to perform comprehensive welding processing on the fitting parts of the two bends 8.

After the welding of the two bent pipes 8 is completed, the clamping device for the bent pipe 8 is released, the first nut 7 is loosened, and the two rotating frames 6 are pushed to move. The rotation directions of the two rotating frames 6 are opposite, and the rotating frames 6 push the clamping device to slide on the surface of the bent pipe 8 during the rotation process until the clamping device slides to the outer end of the bent pipe 8. The two welded bent pipes 8 can be quickly removed from the entire welding device, thereby improving the speed of welding and picking up the bent pipe 8.

Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. A pipe bending welding device for processing metal products, comprising a base plate (1), characterized in that: a slide plate (2) is fixedly arranged at the center of the top surface of the base plate (1), a slide frame (3) is slidably matched at the top of the slide plate (2), and a welding gun (4) is fixedly connected to the top of the slide frame (3), and pillars (5) are vertically fixedly arranged on both sides of the slide plate (2), a rotating frame (6) is rotatably connected to the top of the pillar (5), and the rotating frame (6) is limited to the convex rod at the top of the pillar (5) by a first nut (7), and a clamping device for limiting the pipe bending (8) is provided at the end of the rotating frame (6), the end of the pipe bending (8) passes through the center of the clamping device, and the inner ends of the two pipe bendings (8) are relatively fitted, and the welding head of the welding gun (4) is correspondingly located at the fitting position of the inner ends of the two pipe bendings (8). 2. The bent pipe welding device for metal product processing according to claim 1, characterized in that: The top surface of the bottom plate (1) is provided with curved grooves (9) on both sides, the two curved grooves (9) are arranged opposite to each other, and the top surface of the curved groove (9) is provided with a peripheral edge (10) in an annular manner, and the peripheral edge (10) is provided as a whole with the top surface of the bottom plate (1), and a movable groove (11) is provided at the bottom of the inner side of the curved groove (9), the top opening of the movable groove (11) is provided corresponding to the peripheral edge (10), and the centers of the end surfaces at both ends of the inner side of the movable groove (11) are fixedly connected by a curved rod (12), and a slide frame (13) is provided inside the movable groove (11), and the top end of the slide frame (13) is fixedly connected to the bottom of the clamping device, and the clamping device uses the slide frame (13) to slide with the movable groove (11). 3. The bent pipe welding device for processing metal products according to claim 2, characterized in that: The clamping device comprises a first frame plate (14) and a second frame plate (15), the first frame plate (14) and the second frame plate (15) are arranged opposite to each other, and the end of the rotating frame (6) is fixedly connected to the rear side of the circumferential outer side surface of the first frame plate (14) and the second frame plate (15), respectively, and the bottom of the circumferential outer side surface of the first frame plate (14) and the second frame plate (15) is fixedly connected to the top of the slide frame (13), a certain partition groove (16) is formed between the first frame plate (14) and the second frame plate (15), the first frame plate (14) and the second frame plate (15) are rotatably connected to a rotating structure by using the partition groove (16), and the first frame plate (14) and the second frame plate (15) use the rotating structure to limit the clamping of the bent pipe (8). 4. The bent pipe welding device for processing metal products according to claim 3 is characterized in that: The rotating structure comprises a plurality of inner clamping blocks (17), the plurality of inner clamping blocks (17) are arranged in parallel in an annular manner and at equal distances at the center of the first frame plate (14) and the second frame plate (15), both ends of the inner clamping blocks (17) are provided with through grooves (18), and the inner clamping blocks (17) are connected with connecting rods (19) correspondingly by means of the two through grooves (18), the two opposite connecting rods (19) of two adjacent inner clamping blocks (17) are fixedly connected by means of elastic strips (20), and the inner clamping blocks (17), the connecting rods (19) and the elastic strips (20) are combined into an annular clamp, and the rotating structure uses the annular clamp to limit and clamp the bent pipe (8). 5. The bent pipe welding device for processing metal products according to claim 4, characterized in that: A convex head (21) is fixedly provided at the center of the outer side surface of the inner clamp block (17); a rotating sleeve (22) is rotatably sleeved on the surface of the convex head (21); a ring strip is annularly provided on the circumferential side surface of the convex head (21); and a ring groove is provided on the inner circumferential side surface of the inner end of the rotating sleeve (22) for rotatably cooperating with the ring strip. The rotating sleeve (22) rotatably cooperates with the ring strip of the convex head (21) by means of the ring groove. The outer end of the rotating sleeve (22) is spirally sleeved on the surface of the first support rod (23); one end of the first support rod (23) is located inside the rotating sleeve (22); and a spring (24) is sleeved on the surface of the first support rod (23); the outer end of the spring (24) is correspondingly fitted with the inner circumferential side surface of the outer end of the rotating sleeve (22); and the inner end of the spring (24) is fitted with the inner end of the first support rod (23). 6. The bent pipe welding device for processing metal products according to claim 5, characterized in that: The rotating structure further comprises a plurality of balls (25), the plurality of balls (25) being arranged in one-to-one correspondence with the plurality of inner clamping blocks (17), and the outer end of the first support rod (23) being fixedly connected to the surface of the ball (25), the plurality of balls (25) being fixedly connected by a circular ring (26), and the midpoint of the circular ring (26) coincides with the midpoint of the partition groove (16), a second support rod (27) being fixedly connected to the circumferential surface of the ball (25), the center lines of the first support rod (23) and the second support rod (27) coincide, and the second support rod (27) passes through the partition groove (16), a second nut (28) being spirally sleeved on the surface of the second support rod (27), and the inner side surface of the second nut (28) being correspondingly fitted to the outer circumferential surfaces of the first frame plate (14) and the second frame plate (15). 7. The bent pipe welding device for processing metal products according to claim 6, characterized in that: The sphere (25) is fixedly connected to two sides of the circumference with clamping rods (29); the first frame plate (14) and the second frame plate (15) are provided with grooves (30) corresponding to the clamping rods (29) on the inner side surfaces of the circumferences opposite to each other; the sphere (25) is slidably engaged with the clamping rods (29) and the grooves (30); and the ends of the clamping rods (29) are correspondingly fitted with the inner side surfaces of the grooves (30). 8. The bent pipe welding device for processing metal products according to claim 2, characterized in that: An annular dimension (31) is provided on both sides of the top surface of the bottom plate (1), and the center point of the annular dimension (31) is the center point of the pillar (5), and the annular dimension (31) is located inside the circumference of the surrounding edge (10). 9. The bent pipe welding device for processing metal products according to claim 3, characterized in that: The surrounding edge (10) is made of rubber material, and the bottoms of the first frame plate (14) and the second frame plate (15) do not contact the surrounding edge (10).