Multi-section type welding device for pipe machining

Abstract

The invention discloses a multi-section type welding device for pipe machining, and relates to the technical field of pipe machining, the multi-section type welding device comprises an electric guide rail and an adjusting groove formed in the upper surface of the electric guide rail, a supporting seat and a supporting rod are slidably arranged in the adjusting groove, a welding mechanism is arranged on the supporting rod, a V-shaped groove is formed in the upper surface of the supporting seat, and a pipe is placed in the V-shaped groove; a centering mechanism is arranged in the pipe and comprises a first centering assembly and a second centering assembly. According to the multi-section type welding device for pipe machining, the first centering assembly and the second centering assembly are arranged to conduct centering on the multiple sections of pipes in the pipe materials so that the centers of the pipe materials can be aligned, and the pipe materials are passively pulled synchronously during butt joint so that connectors of the multiple sections of pipes can be in tight butt joint; therefore, centering welding can be conducted on variable-diameter pipes and irregular pipes in a self-adaptive mode, welding openings between the pipes can be driven to abut tightly continuously during centering, and no gap exists.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe processing, and particularly relates to a multi-section welding device for pipe processing. Background Art

[0002] Multi-section pipe welding is a method of welding pipes in multiple sections, which is suitable for different types of pipes and welding requirements.

[0003] Common multi-section pipe welding is to weld multiple similar pipes with different lengths together to form a longer pipe, and there are also uncommon welding requirements for multi-section pipe welding, that is, welding of other special pipes, such as stepped pipes and irregular pipes, etc.

[0004] A stepped pipe refers to a pipe in which pipe sections with different diameters are connected in series in sequence. Irregular pipes are more commonly combinations between square pipes and round pipes. In both cases, the inner diameter, outer diameter, and even the shape between each pipe section are different, which causes trouble in how to weld; how to weld between a large inner diameter and a small inner diameter, how to weld between a square opening and a round opening, and how to weld between a thick outer diameter and a thin outer diameter are all problems that need to be solved urgently. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-section welding device for pipe processing to solve the above deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A multi-section welding device for pipe processing includes an electric guide rail and an adjustment groove provided on the upper surface of the electric guide rail. A support seat and a support rod are slidably provided in the adjustment groove. A welding mechanism is provided on the support rod. A V-shaped groove is provided on the upper surface of the support seat. A pipe material is placed in the V-shaped groove. A centering mechanism is provided inside the pipe material. The centering mechanism includes a first centering component and a second centering component;

[0008] Before welding the pipe material, the centering mechanism is placed inside the pipe material, and the first centering component and the second centering component are used to respectively center the multiple pipes in the pipe material so that the center of the pipe material is aligned, and the pipe material is passively pulled synchronously during docking so that the interfaces of the multiple pipes are tightly docked with each other.

[0009] As a further preferred scheme in the embodiment of the present invention, the welding mechanism includes a fixing bar fixedly connected to one side surface of the support rod, and a driving motor is provided at one end of the fixing bar, and a pulley is rotatably connected to each of the two ends of the fixing bar, and the output end of the driving motor passes through the fixing bar and is connected to one of the pulleys, and a transmission belt is rotatably connected between the two pulleys, and a gear is connected to each of the two pulleys at one end.

[0010] As a further preferred scheme in the embodiment of the present invention, the welding mechanism also includes a connecting strip fixedly connected to the upper end of the support rod, and one end of the connecting strip is fixedly connected to a rotating seat, and one end of the rotating seat is provided with a rotating groove, and a gear ring is rotatably connected in the rotating groove, and the other end of the rotating seat is fixedly connected to a connecting rod, and one end of the connecting rod is provided with a laser welder, and the two gears are engaged with the gear ring.

[0011] As a further preferred solution in the embodiment of the present invention, the centering mechanism further includes a first centering rod, and a first rotating wheel is provided at one end of the first centering rod, and a first thread groove is provided on the surface of the first centering rod.

[0012] As a further preferred scheme in the embodiment of the present invention, the centering mechanism also includes a second centering rod slidably sleeved on the surface of the first centering rod, and the outer wall of the first centering rod is rotatably matched with the inner wall of the second centering rod, and a second rotating wheel is provided at one end of the second centering rod, and a second threaded groove is provided on the surface of the second centering rod.

[0013] As a further preferred scheme in the embodiment of the present invention, the first centering component includes a second centering bar, and a second friction surface is provided on one side surface of the second centering bar, and a second connecting groove is provided on the other side of the second centering bar, and a second connecting bar is rotatably connected in the second connecting groove, and a first adjusting ring is rotatably connected on the surface of the first threaded groove, and a third connecting seat is connected to the surface of the first adjusting ring, and one end of the second connecting bar is hinged to the third connecting seat.

[0014] As a further preferred scheme in the embodiment of the present invention, the second centering assembly includes a first centering bar, and a first friction surface is provided on one side surface of the first centering bar, and a first connecting groove is provided on the other side of the first centering bar, and the first connecting bar and the third connecting bar are rotatably connected in the first connecting groove, and the first connecting bar and the third connecting bar are hinged at the center, and a third adjusting ring is rotatably connected to the surface of one end of the second centering rod, and the surface of the third adjusting ring is connected to the second connecting seat, and one end of the third connecting bar is hinged to the second connecting seat, and the second threaded groove surface is rotatably connected to the second adjusting ring, and the surface of the second adjusting ring is connected to the first connecting seat, and one end of the first connecting bar is hinged to the first connecting seat.

[0015] As a further preferred solution in the embodiments of the present invention, a tension plate is hinged between the second connecting seat and the third connecting seat. One end of the tension plate is fixedly connected with a driving rod. One side surface of the driving rod abuts against one end of the third adjusting ring. One end of the driving rod is rotationally matched with the surface of the second centering rod.

[0016] In the above technical solution, the beneficial effects of a multi-section welding device for pipe processing provided by the present invention are as follows:

[0017] The present invention arranges a centering mechanism inside the pipe material, and uses the first centering component and the second centering component to respectively center the multi-section pipes in the pipe material, so that the centers of the pipe materials are aligned. And synchronously pull the pipe material passively during butt joint so that the interfaces of the multi-section pipes are butted tightly with each other. Thus, when the pipes are welded in sections, the variable-diameter pipes and irregular pipes can be adaptively centered and welded, and the welded joints between the pipes can be continuously tightened during centering without gaps.

[0018] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not intended to limit the present disclosure.

[0019] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and does not disclose the entire scope of the disclosed technology or all features. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure provided by the embodiments of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the welding mechanism provided by the embodiments of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the welding mechanism from another perspective provided by the embodiments of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the centering mechanism provided by the embodiments of the present invention;

[0025] Figure 5 It is a partial schematic diagram of the structure of the centering mechanism provided by the embodiments of the present invention;

[0026] Figure 6Exploded view of the centering mechanism provided by the embodiment of the present invention;

[0027] Figure 7 provided by the embodiment of the present invention Figure 6 Schematic diagram of the enlarged structure at position A in

[0028] Figure 8 Schematic diagram of the structure of the adapter head provided by the embodiment of the present invention.

[0029] Explanation of reference numerals:

[0030] 1. Electric guide rail; 101. Adjustment groove; 102. Support seat; 103. Adapter head; 104. Adapter slot; 105. Pipe material; 2. Support rod; 201. Connecting strip; 202. Rotating seat; 203. Tooth ring; 204. Gear; 205. Pulley; 206. Transmission belt; 207. Fixed strip; 208. Driving motor; 209. Connecting rod; 210. Laser welder; 3. First centering rod; 301. First runner; 302. First thread groove; 303. First adjustment ring; 4. Second centering rod; 401. Second runner; 402. Second thread groove; 403. Second adjustment ring; 404. Tightening plate; 405. Driving rod; 406. Third adjustment ring; 5. First connecting seat; 501. Second connecting seat; 502. First connecting strip; 503. First centering strip; 504. First connecting groove; 505. First friction surface; 506. Third connecting strip; 6. Third connecting seat; 601. Second connecting strip; 602. Second centering strip; 603. Second connecting groove; 604. Second friction surface. Detailed implementation manners

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0032] Please refer to Figure 1 - Figure 8 , a multi-section welding device for pipe processing, including an electric guide rail 1 and an adjustment groove 101 provided on the upper surface of the electric guide rail 1. A support seat 102 and a support rod 2 are slidably arranged in the adjustment groove 101. A welding mechanism is provided on the support rod 2. A V-shaped groove is provided on the upper surface of the support seat 102. A pipe material 105 is placed in the V-shaped groove. A centering mechanism is provided in the pipe material 105. The centering mechanism includes a first centering component and a second centering component;

[0033] Before welding the pipe material 105, place the centering mechanism inside the pipe material 105, and use the first centering component and the second centering component to respectively center the multiple sections of pipe materials in the pipe material 105, so that the center of the pipe material 105 is aligned, and synchronously passively pull the pipe material 105 during docking to make the interfaces of the multiple sections of pipe materials dock tightly with each other.

[0034] In the present invention, by setting the centering mechanism to be placed inside the pipe material 105, and using the first centering component and the second centering component to respectively center the multiple sections of pipe materials in the pipe material 105, so that the center of the pipe material 105 is aligned, and synchronously passively pull the pipe material 105 during docking to make the interfaces of the multiple sections of pipe materials dock tightly with each other, thereby enabling the pipe materials to adaptively center and weld the stepped pipe materials and irregular pipe materials during segmented welding, and driving the weld joints between the pipe materials to continuously abut tightly during centering, without gaps occurring.

[0035] Further, the length of the centering mechanism is adapted to the length of the pipe material 105.

[0036] Furthermore, in this embodiment, the pipe material 105 has three sections, the front section and the middle section are combined to form a stepped pipe material, and the middle section and the rear section are combined to form an irregular pipe material.

[0037] In the embodiment further provided by the present invention, the welding mechanism includes a fixed strip 207 fixedly connected to one side surface of the support rod 2, and a driving motor 208 is provided at one end of the fixed strip 207. Two belt pulleys 205 are rotatably connected to both ends of the fixed strip 207 respectively, and the output end of the driving motor 208 penetrates the fixed strip 207 and is connected to one of the belt pulleys 205. A transmission belt 206 is rotatably connected between the two belt pulleys 205, and a gear 204 is connected to one end of each of the two belt pulleys 205.

[0038] In the embodiment further provided by the present invention, the welding mechanism further includes a connecting strip 201 fixedly connected to the upper end of the support rod 2. One end of the connecting strip 201 is fixedly connected with a rotating seat 202. A rotating groove is provided at one end of the rotating seat 202, and a tooth ring 203 is rotatably connected in the rotating groove. The other end of the rotating seat 202 is fixedly connected with a connecting rod 209, and a laser welder 210 is provided at one end of the connecting rod 209. Both of the two gears 204 are engaged with the tooth ring 203.

[0039] Further, notches are provided at the upper ends of the rotating seat 202 and the tooth ring 203 to facilitate the placement and removal of the pipe material 105.

[0040] Furthermore, the setting of the two gears 204 enables the tooth ring 203 to be driven to rotate one week.

[0041] Specifically, the driving motor 208 drives a gear 204 to rotate. Under the synchronous action of the transmission belt 206 and the pulley 205, the two gears 204 rotate synchronously, and then drive the toothed ring 203 to rotate on the rotating seat 202, so as to drive the laser welder 210 to rotate around the welding joint for one week for welding.

[0042] In an embodiment further provided by the present invention, the centering mechanism further includes a first centering rod 3. One end of the first centering rod 3 is provided with a first runner 301, and the surface of the first centering rod 3 is provided with a first thread groove 302.

[0043] Furthermore, there are two first centering rods 3, two second centering rods 4, two first runners 301 and two first thread grooves 302. The two first centering rods 3 are rotatably connected at the end positions. The first centering rod 3, the second centering rod 4, the first runner 301 and the first thread groove 302 are mirror-symmetrical with the end connection position as the center.

[0044] In an embodiment further provided by the present invention, the centering mechanism further includes a second centering rod 4 slidably sleeved on the surface of the first centering rod 3. The outer wall of the first centering rod 3 is rotationally matched with the inner wall of the second centering rod 4. One end of the second centering rod 4 is provided with a second runner 401, and the surface of the second centering rod 4 is provided with a second thread groove 402.

[0045] Furthermore, the second runner 401 has the same shape as the first runner 301, and the size of the second runner 401 is larger than that of the first runner 301.

[0046] Even further, lubricating oil is applied to the inner wall of the second centering rod 4 so that when the first centering rod 3 or the second centering rod 4 rotates respectively, they will not interfere with each other.

[0047] In an embodiment further provided by the present invention, the first centering assembly includes a second centering strip 602. One side surface of the second centering strip 602 is provided with a second friction surface 604, and the other side of the second centering strip 602 is provided with a second connection groove 603. A second connecting strip 601 is rotatably connected in the second connection groove 603. The surface of the first thread groove 302 is rotatably connected with a first adjusting ring 303. The surface of the first adjusting ring 303 is connected with a third connecting seat 6, and one end of the second connecting strip 601 is hinged to the third connecting seat 6.

[0048] Furthermore, there are two second connecting strips 601, and the two second connecting strips 601 are hinged at the center.

[0049] Even further, there are four first centering assemblies, and they are arranged in an annular equidistant array with the center point of the first centering rod 3 as the center.

[0050] In an embodiment further provided by the present invention, the second centering assembly includes a first centering strip 503. A first friction surface 505 is provided on one side surface of the first centering strip 503. A first connection groove 504 is provided on the other side of the first centering strip 503. A first connecting bar 502 and a third connecting bar 506 are rotatably connected in the first connection groove 504. The first connecting bar 502 and the third connecting bar 506 are hinged at the center. One end surface of the second centering rod 4 is rotatably connected with a third adjusting ring 406. A second connecting seat 501 is connected to the surface of the third adjusting ring 406. One end of the third connecting bar 506 is hinged with the second connecting seat 501. A second adjusting ring 403 is rotatably connected to the surface of the second thread groove 402. A first connecting seat 5 is connected to the surface of the second adjusting ring 403. One end of the first connecting bar 502 is hinged with the first connecting seat 5.

[0051] Further, after centering, the first friction surface 505 and the second friction surface 604 are in contact with the inner wall of the pipe material 105, so that sufficient frictional force for driving the pipe material 105 to move is generated between the first centering strip 503 and the second centering strip 602 and the pipe material 105.

[0052] Furthermore, the end connection position between the two first centering rods 3 is located on the perpendicular bisector of the second centering strip 602. There are two groups of second centering assemblies, which are mirror-symmetrical with respect to the perpendicular bisector of the second centering strip 602. Each group of second centering assemblies has four, and they are arranged in an annular equidistant array with the center point of the first centering rod 3 as the center.

[0053] In an embodiment further provided by the present invention, a tensioning plate 404 is hinged between the second connecting seat 501 and the third connecting seat 6. One end of the tensioning plate 404 is fixedly connected with a driving rod 405. One side surface of the driving rod 405 abuts against one end of the third adjusting ring 406. One end of the driving rod 405 is rotationally matched with the surface of the second centering rod 4.

[0054] Specifically, when the second centering rod 4 rotates, the second connecting seat 501 on the third adjusting ring 406 is pulled by the tensioning plate 404, so that the third adjusting ring 406 will not rotate together, and the first centering rod 3 will not rotate either; when the first centering rod 3 rotates, it drives the first adjusting ring 303 to move, so that the third adjusting ring 406 is pulled by the tensioning plate 404, and further the second centering rod 4 is pulled to slide inward, thereby driving the front section pipe material 105 and the rear section pipe material 105 on the second centering assembly to move towards the middle section pipe material 105, so that the pipe materials 105 are mutually abutted tightly, and the welded joints are closely combined without gaps.

[0055] Further, it further includes an adapter head 103, and an adapter groove 104 is provided inside the adapter head 103.

[0056] Furthermore, the shape of the fitting groove 104 is adapted to the shapes of the second runner 401 and the first runner 301, and has different fitting heads 103, the sizes of which are respectively adapted to the second runner 401 and the first runner 301, and the fitting heads 103 can be externally connected to the electric drill bits in the prior art.

[0057] Specifically, after inserting the fitting head 103 onto the second runner 401 or the first runner 301, start the electric drill bit to drive the second runner 401 or the first runner 301 to rotate. When the operator rotates the first runner 301, the second runner 401 can be appropriately held to enable the first runner 301 to rotate without interference, and the same applies when rotating the second runner 401. Thus, when the second runner 401 or the first runner 301 rotates, only the structures connected thereto are driven to move, rather than driving the entire centering mechanism to move.

[0058] In the present invention, before welding, according to the respective lengths of each section of the pipe material 105, start the electric guide rail 1 to drive the support seat 102 and the support rod 2 to slide to a suitable position. Then place the segmented pipe material 105 on the support seat 102 and the rotating seat 202. Then insert the centering mechanism into the pipe material 105, and make the first centering component be inside the middle section of the pipe material 105, and the two second centering components are respectively inside the front section of the pipe material 105 and the rear section of the pipe material 105. When centering, first rotate the two second centering rods 4 respectively. Under the action of the second thread groove 402, the second adjusting ring 403 moves horizontally towards the center, thereby driving the first connecting bar 502 and the third connecting bar 506 to rotate and expand, and then making the first centering bar 503 open synchronously to drive the center points of the front section of the pipe material 105 and the rear section of the pipe material 105 to be brought onto the same line. Subsequently, rotate the two first centering rods 3 simultaneously. Under the action of the first thread groove 302, the two first adjusting rings 303 move horizontally towards the center and approach each other, and then make the second centering bar 602 open synchronously to drive the middle section of the pipe material 105 to be centered, so that the three sections of the pipe material 105 are all centered on the same line. Synchronously, when the first adjusting ring 303 moves, the third adjusting ring 406 will also be pulled by the tensioning plate 404, and then the second centering rod 4 is pulled to slide inward, thereby driving the front section of the pipe material 105 and the rear section of the pipe material 105 to move towards the middle section of the pipe material 105, so that the three sections of the pipe material 105 are pressed against each other tightly, and the welded joints are closely combined without gaps. Finally, start the drive motor 208 to drive one gear 204 to rotate, and under the synchronous action of the transmission belt 206 and the belt pulley 205, the two gears 204 rotate synchronously, and then drive the toothed ring 203 to rotate on the rotating seat 202 to drive the laser welder 210 to rotate around the welded joint for one week for welding.

[0059] Only some exemplary embodiments of the present invention have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above-mentioned drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multi - section welding device for pipe processing, comprising an electric guide rail (1) and an adjustment groove (101) arranged on the upper surface of the electric guide rail (1), characterized in that: A support base (102) and a support rod (2) are slidably arranged in the adjusting groove (101). A welding mechanism is provided on the support rod (2). A V-shaped groove is provided on the upper surface of the support base (102). A pipe material (105) is placed in the V-shaped groove. A centering mechanism is provided in the pipe material (105). The centering mechanism includes a first centering component and a second centering component; Before welding the pipe material (105), the centering mechanism is placed inside the pipe material (105), and the first centering component and the second centering component are used to respectively center multiple sections of pipe materials in the pipe material (105) so that the center of the pipe material (105) is aligned, and the pipe material (105) is passively pulled during docking synchronously so that the interfaces of multiple sections of pipe materials are tightly butted against each other.

2. The multi-segment welding device for pipe processing according to claim 1, wherein, The welding mechanism includes a fixed strip (207) fixedly connected to one side surface of the support rod (2). A driving motor (208) is provided at one end of the fixed strip (207). A pulley (205) is rotatably connected to each end of the fixed strip (207). The output end of the driving motor (208) penetrates the fixed strip (207) and is connected to one of the pulleys (205). A transmission belt (206) is rotatably connected between the two pulleys (205). A gear (204) is connected to each end of the two pulleys (205).

3. The multi-stage welding device for pipe processing according to claim 2, characterized in that, The welding mechanism further includes a connecting strip (201) fixedly connected to the upper end of the support rod (2). A rotating seat (202) is fixedly connected to one end of the connecting strip (201). A rotating groove is provided at one end of the rotating seat (202). A toothed ring (203) is rotatably connected in the rotating groove. A connecting rod (209) is fixedly connected to the other end of the rotating seat (202). A laser welder (210) is provided at one end of the connecting rod (209). The two gears (204) are both meshed with the toothed ring (203).

4. A multi-stage welding device for pipe processing according to claim 1, characterized in that, The centering mechanism further includes a first centering rod (3). A first runner (301) is provided at one end of the first centering rod (3). A first thread groove (302) is provided on the surface of the first centering rod (3).

5. A multi-stage welding device for pipe processing according to claim 4, characterized in that, The centering mechanism further includes a second centering rod (4) slidably sleeved on the surface of the first centering rod (3). The outer wall of the first centering rod (3) is rotationally matched with the inner wall of the second centering rod (4). A second runner (401) is provided at one end of the second centering rod (4). A second thread groove (402) is provided on the surface of the second centering rod (4).

6. The multi-stage welding device for pipe processing according to claim 5, characterized in that, The first centering component includes a second centering strip (602). A second friction surface (604) is provided on one side surface of the second centering strip (602). A second connecting groove (603) is provided on the other side of the second centering strip (602). A second connecting bar (601) is rotatably connected in the second connecting groove (603). A first adjusting ring (303) is rotatably connected to the surface of the first thread groove (302). A third connecting seat (6) is connected to the surface of the first adjusting ring (303). One end of the second connecting bar (601) is hinged to the third connecting seat (6).

7. A multi-stage welding device for pipe processing according to claim 6, characterized in that, The second centering assembly includes a first centering strip (503), and a first friction surface (505) is provided on one side surface of the first centering strip (503), and a first connecting groove (504) is provided on the other side of the first centering strip (503). A first connecting bar (502) and a third connecting bar (506) are rotatably connected in the first connecting groove (504). The first connecting bar (502) and the third connecting bar (506) are hinged at the center. One end surface of the second centering rod (4) is rotatably connected with a third adjusting ring (406). A second connecting seat (501) is connected to the surface of the third adjusting ring (406). One end of the third connecting bar (506) is hinged to the second connecting seat (501). A second adjusting ring (403) is rotatably connected to the surface of the second thread groove (402). A first connecting seat (5) is connected to the surface of the second adjusting ring (403). One end of the first connecting bar (502) is hinged to the first connecting seat (5).

8. A multi-stage welding device for pipe processing according to claim 7, characterized in that A tension plate (404) is hinged between the second connecting seat (501) and the third connecting seat (6). One end of the tension plate (404) is fixedly connected with a driving rod (405). One side surface of the driving rod (405) abuts against one end of the third adjusting ring (406). One end of the driving rod (405) is rotationally matched with the surface of the second centering rod (4).

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