A welding equipment for stainless steel lined and plastic-coated composite steel pipes

Abstract

This utility model discloses a welding device for stainless steel-lined plastic-coated composite steel pipes, including a welding table, a lifting frame, a lifting assembly, a moving cylinder, an argon arc welding assembly, an electric arc welding assembly, positioning cones, and a positioning assembly. The lifting frame is movably positioned above the welding table, and the lifting assembly is positioned between the lifting frame and the welding table. Two moving cylinders are connected in the same direction within the lifting frame via the moving assembly. The argon arc welding assembly is installed below one of the moving cylinders, and the electric arc welding assembly is positioned below the other moving cylinder. Multiple positioning cones are movably positioned above the welding table, and the positioning assembly is positioned between the multiple positioning cones. The lifting assembly includes a support frame, a first electric cylinder, and a lifting plate. The support frame is fixedly connected to one side of the welding table. This welding device for stainless steel-lined plastic-coated composite steel pipes reduces welding steps and improves welding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, specifically to a welding equipment for stainless steel lined and plastic-coated composite steel pipes. Background Technology

[0002] Stainless steel lined plastic-coated composite steel pipe is a new type of pipe that combines the advantages of stainless steel and plastic-coated steel pipe. It uses steel pipe as the base material and lines the inner wall of the steel pipe with a thin layer of stainless steel plate, usually between 0.4-1.2 mm thick. Then, plastic coating is applied to the outer wall of the steel pipe to form a plastic coating. Due to its good corrosion resistance and mechanical properties, stainless steel lined plastic-coated composite steel pipe has a long service life, which can reduce the frequency of pipe replacement and maintenance and reduce the cost of use.

[0003] In the existing technology, when welding stainless steel lined plastic-coated composite steel pipes, stainless steel welding rods or argon arc welding stainless steel welding wires are first used to butt-weld the inner stainless steel layer, and then carbon steel welding rods are used to weld the outer steel pipe. After welding, the outer coating is repaired to restore the original appearance. However, the welding process requires first welding the inner stainless steel lining layer with an argon arc welding machine, and then welding the outer steel pipe with an electric arc welding machine. The welding steps are relatively cumbersome, resulting in low welding efficiency for stainless steel lined plastic-coated composite steel pipes. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a welding equipment for stainless steel-lined plastic-coated composite steel pipes, thereby solving the problems of cumbersome welding steps and low welding efficiency mentioned in the background technology.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a welding equipment for stainless steel lined and plastic-coated composite steel pipes, comprising a welding table, a lifting frame, a lifting assembly, a moving cylinder, an argon arc welding assembly, an electric arc welding assembly, a positioning cone rod, and a positioning assembly;

[0008] The lifting frame is movably positioned on the upper side of the welding table;

[0009] The lifting assembly is disposed between the lifting frame and the welding table;

[0010] The movable cylinder is configured as two, and the two movable cylinders are moved in the same direction and positioned within the lifting frame by a movable component;

[0011] The argon arc welding assembly is installed on the underside of one of the movable cylinders;

[0012] The arc welding assembly is located on the underside of the other movable cylinder;

[0013] The positioning cone rods are configured in multiple ways, and all of the positioning cone rods are movably positioned on the upper side of the welding table;

[0014] The positioning component is disposed between the plurality of positioning cone rods.

[0015] Furthermore, the lifting assembly includes:

[0016] A support frame, which is fixedly connected to one side of the welding table;

[0017] The first electric cylinder is provided in two parts, both of which are mounted on the support frame and the output end of the first electric cylinder is fixedly connected to the lifting frame.

[0018] The lifting platform is provided in two parts, which are symmetrically connected to the lifting frame. The support frame is provided with lifting grooves for the lifting platforms to slide.

[0019] Furthermore, the moving component includes:

[0020] The second electric cylinder is installed on one side of the lifting frame, and the output end of the second electric cylinder passes through the lifting frame and is fixedly connected to the adjacent moving cylinder.

[0021] A connecting rod, wherein multiple connecting rods are provided, and an array of multiple connecting rods is arranged between two movable cylinders;

[0022] The lifting frame has two limiting rods symmetrically connected to it, and the lifting frame has a limiting opening for the moving of the limiting rods.

[0023] Furthermore, the argon arc welding assembly includes:

[0024] A first motor is mounted on the outer wall of the adjacent movable cylinder;

[0025] A first screw is rotatably disposed inside the movable cylinder, and the first screw is fixedly connected to the output end of the first motor;

[0026] A drive block is threadedly connected to the first screw, and a drive port for sliding of the drive block is provided on the adjacent movable cylinder;

[0027] An argon arc welding machine is installed at the bottom end of the drive block, and an argon arc welding head is mounted on the argon arc welding machine.

[0028] Furthermore, the positioning component includes:

[0029] The third electric cylinder is mounted on the bottom end of the welding table via a mounting bracket;

[0030] Positioning blocks, wherein two positioning blocks are provided, and the positioning blocks are fixedly connected to the output end of the third electric cylinder;

[0031] The positioning strip is provided in two parts, and the two positioning strips are fixedly connected to each positioning block. The welding table is provided with a positioning port for the positioning strip to slide.

[0032] The positioning plate is provided in two, and the two positioning plates are respectively fixedly connected between the plurality of positioning strips and the plurality of positioning cone rods.

[0033] Furthermore, the arc welding assembly includes:

[0034] A second motor is mounted on the adjacent movable cylinder;

[0035] The second screw is fixedly connected to the output end of the second motor, and the second screw is rotatably connected to the adjacent movable cylinder;

[0036] A sliding block is slidably disposed inside an adjacent movable cylinder. The movable cylinder has a sliding opening for the sliding block to slide, and the sliding block is threadedly connected to the second screw.

[0037] An arc welding machine is provided, wherein the arc welding machine is located at the bottom end of the sliding block, and an arc welding head is mounted on the arc welding machine.

[0038] (III) Beneficial Effects

[0039] Compared with the prior art, this utility model provides a welding equipment for stainless steel-lined plastic-coated composite steel pipes, which has the following advantages:

[0040] 1. In this utility model, the welding table facilitates the placement of inner stainless steel or outer steel pipes of different specifications. At the same time, the positioning components and multiple positioning cones facilitate the stable positioning of the inner stainless steel or outer steel pipes, thereby improving the stability of welding the inner stainless steel-lined plastic-coated composite steel pipe.

[0041] 2. In this utility model, the lifting assembly and lifting frame facilitate the simultaneous lifting and lowering of the two moving cylinders, so as to facilitate the simultaneous lifting and lowering of the argon arc welding assembly and the electric arc welding assembly, thereby facilitating the adjustment of the welding height according to the specifications of the stainless steel-lined plastic-coated composite steel pipe.

[0042] 3. In this utility model, the movable component facilitates the movement of the two movable cylinders within the lifting frame, thereby enabling the argon arc welding component or electric arc welding component to be moved to a suitable welding position, which in turn improves the welding effect on the inner stainless steel layer or the outer steel pipe.

[0043] 4. Therefore, compared with the existing technology, the welding equipment for stainless steel lined plastic-coated composite steel pipes has the problems of complicated welding steps and low welding efficiency. It is convenient to form an integrated welding production line by cooperating the welding table, lifting frame, lifting component, moving cylinder, moving component, argon arc welding component, electric arc welding component, positioning cone rod and positioning component, etc., so as to reduce the welding steps and thus improve the welding efficiency of stainless steel lined plastic-coated composite steel pipes. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the overall structure of this application;

[0045] Figure 2 This is a schematic diagram of the structure of the lifting frame, lifting plate and limit rod in this application;

[0046] Figure 3 This is a schematic diagram of the structure of the positioning cone rod, positioning block and positioning plate in this application;

[0047] Figure 4 This is a cross-sectional structural diagram showing the assembly of the movable cylinder, drive block, and argon arc welding head in this application;

[0048] Figure 5 This is a cross-sectional structural diagram showing the cooperation between the movable cylinder, sliding block, and arc welding head of this application.

[0049] In the diagram: 1. Welding table; 2. Lifting frame; 3. Moving cylinder; 4. Positioning cone rod; 5. Support frame; 6. First electric cylinder; 7. Lifting plate; 8. Second electric cylinder; 9. Connecting rod; 10. Limiting rod; 11. First motor; 12. First screw; 13. Drive block; 14. Argon arc welding machine; 15. Argon arc welding head; 16. Third electric cylinder; 17. Positioning block; 18. Positioning strip; 19. Positioning plate; 20. Second motor; 21. Second screw; 22. Sliding block; 23. Arc welding machine; 24. Arc welding head. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0051] Please see Figures 1 to 5 A welding device for stainless steel-lined plastic-coated composite steel pipes includes a welding table 1, a lifting frame 2, a lifting assembly, a moving cylinder 3, an argon arc welding assembly, an electric arc welding assembly, positioning cone rods 4, and a positioning assembly. The lifting frame 2 is movably positioned on the upper side of the welding table 1. The lifting assembly is positioned between the lifting frame 2 and the welding table 1. There are two moving cylinders 3, which are moved in the same direction within the lifting frame 2 via the moving assembly. The argon arc welding assembly is installed on the lower side of one of the moving cylinders 3, and the electric arc welding assembly is positioned on the lower side of the other moving cylinder 3. There are multiple positioning cone rods 4, which are all movably positioned on the upper side of the welding table 1. The positioning assembly is positioned between the multiple positioning cone rods 4.

[0052] refer to Figure 1 as well as Figure 2 The lifting assembly includes a support frame 5, a first electric cylinder 6, and a lifting plate 7. The support frame 5 is fixedly connected to one side of the welding table 1. There are two first electric cylinders 6, both of which are mounted on the support frame 5, and the output end of the first electric cylinder 6 is fixedly connected to the lifting frame 2. There are two lifting plates 7, which are symmetrically connected to the lifting frame 2. The support frame 5 has a lifting groove for the lifting plates 7 to slide.

[0053] When the welding height needs to be adjusted according to the specifications of the stainless steel-lined plastic-coated composite steel pipe, the two first electric cylinders 6 are started simultaneously, so that the lifting frame 2 can drive the moving cylinder 3, the first motor 11 and the second motor 20 to move. During the movement of the lifting frame 2, the two lifting plates 7 will move in the two lifting slots respectively, so that the lifting frame 2 can maintain stable movement.

[0054] refer to Figure 2 The moving component includes a second electric cylinder 8, a connecting rod 9, and a limiting rod 10. The second electric cylinder 8 is installed on one side of the lifting frame 2, and the output end of the second electric cylinder 8 passes through the lifting frame 2 and is fixedly connected to the adjacent moving cylinder 3. Multiple connecting rods 9 are arranged in an array between two moving cylinders 3. Two limiting rods 10 are arranged, and the two limiting rods 10 are symmetrically connected to the lifting frame 2. The lifting frame 2 is provided with a limiting port for the limiting rods 10 to move.

[0055] When the second electric cylinder 8 is started, the two moving cylinders 3 can move within the lifting frame 2 via multiple connecting rods 9, so as to move one of the moving cylinders 3 to a suitable welding position. At the same time, the two limiting rods 10 will move within the two limiting ports respectively, which will limit the movement of the two moving cylinders 3, thereby improving the stability of the moving cylinders 3 moving within the lifting frame 2.

[0056] refer to Figure 4The argon arc welding assembly includes a first motor 11, a first screw 12, a drive block 13, and an argon arc welding machine 14. The first motor 11 is installed on the outer wall of the adjacent moving cylinder 3. The first motor 11 is set to automatically perform forward and reverse rotation. The first screw 12 is rotatably installed inside the moving cylinder 3 and is fixedly connected to the output end of the first motor 11. The drive block 13 is threadedly connected to the first screw 12. The adjacent moving cylinder 3 has a drive port for the drive block 13 to slide. The argon arc welding machine 14 is installed at the bottom end of the drive block 13 and has an argon arc welding head 15 installed on it.

[0057] When the first motor 11 starts, the first screw 12 will rotate inside the moving cylinder 3, thereby causing the drive block 13 to move inside the drive port. At the same time, the drive block 13 will drive the argon arc welding machine 14 to move back and forth, so that the argon arc welding head 15 can butt the inner stainless steel with stainless steel welding rods or argon arc welding stainless steel welding wire.

[0058] refer to Figure 3 The positioning assembly includes a third electric cylinder 16, a positioning block 17, a positioning strip 18, and a positioning plate 19. The third electric cylinder 16 is mounted on the bottom of the welding table 1 via a mounting bracket. There are two positioning blocks 17, and the positioning blocks 17 are fixedly connected to the output end of the third electric cylinder 16. There are two positioning strips 18, and the two positioning strips 18 are fixedly connected to each positioning block 17. The welding table 1 has a positioning port for the positioning strips 18 to slide. There are two positioning plates 19, and the two positioning plates 19 are fixedly connected between the multiple positioning strips 18 and the multiple positioning cone rods 4 respectively.

[0059] After the inner stainless steel lining layer is placed on the welding table 1, the third electric cylinder 16 is started, which causes the two positioning blocks 17 and multiple positioning bars 18 to move the two positioning plates 19 toward each other. This allows multiple positioning cone rods 4 to clamp, position, and connect the inner stainless steel lining layer. Furthermore, after the outer steel pipe is placed on the welding table 1, the above steps are repeated to ensure that the multiple positioning cone rods 4 stably position the outer steel pipe, thus improving the stability during welding.

[0060] Referring to 5, the arc welding assembly includes a second motor 20, a second screw 21, a sliding block 22, and an arc welding machine 23. The second motor 20 is mounted on an adjacent movable cylinder 3. The second screw 21 is fixedly connected to the output end of the second motor 20. The second motor 20 is configured to drive the second screw 21 to perform forward and reverse rotation. The second screw 21 is rotatably connected to the adjacent movable cylinder 3. The sliding block 22 is slidably disposed in the adjacent movable cylinder 3. The movable cylinder 3 has a sliding port for the sliding block 22 to slide. The sliding block 22 is threadedly connected to the second screw 21. The arc welding machine 23 is disposed at the bottom end of the sliding block 22, and an arc welding head 24 is mounted on the arc welding machine 23.

[0061] When welding of the outer steel pipe is required, the second motor 20 is started, causing the sliding block 22 to move back and forth in the sliding port through the rotation of the second screw 21. This allows the arc welding machine 2323 to move back and forth under the moving cylinder 3, thereby enabling the arc welding head 24 to weld the outer steel pipe with carbon steel welding rods.

[0062] In summary, the welding equipment for stainless steel lined plastic-coated composite steel pipes first places two stainless steel lining layers on the welding table 1 and starts the third electric cylinder 16, causing the two positioning blocks 17 and multiple positioning bars 18 to move the two positioning plates 19 towards each other, so that multiple positioning cone rods 4 abut against and position the two stainless steel lining layers, making the two stainless steel lining layers contact and connect. Then, the second electric cylinder 8 is started, causing the corresponding moving cylinder 3 to move the argon arc welding machine 14 to a suitable welding position. At the same time, the two first electric cylinders 6 are started, causing the lifting frame 2 to move the moving cylinder 3 to a suitable welding position. Simultaneously, the first motor 11 is started, causing the drive block 13 to move through the rotation of the first screw 12, which allows the argon arc welding machine 14 to move the argon arc welding head 15 back and forth, so that the argon arc welding head 15 can weld the inner stainless steel layer together with stainless steel welding rods or argon arc welding stainless steel welding wires. Then, the outer steel pipe is placed on the welding table 1, and the arc welding head 24 welds the outer steel pipe with carbon steel welding rods through the above steps.

[0063] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding device for stainless steel-lined, plastic-coated composite steel pipes, comprising a welding table (1), characterized in that, Also includes: A lifting frame (2) is movably disposed on the upper side of the welding table (1); A lifting assembly is disposed between the lifting frame (2) and the welding table (1); Two movable cylinders (3) are provided, and the two movable cylinders (3) are moved in the same direction and disposed in the lifting frame (2) through a movable component; Argon arc welding assembly, the argon arc welding assembly being installed on the underside of one of the movable cylinders (3); An arc welding assembly is disposed on the underside of another movable cylinder (3); Positioning cone rod (4), wherein multiple positioning cone rods (4) are provided, and multiple positioning cone rods (4) are movably disposed on the upper side of the welding table (1); A positioning component is disposed between the plurality of positioning cones (4).

2. The welding equipment for stainless steel-lined, plastic-coated composite steel pipes according to claim 1, characterized in that, The lifting assembly includes: A support frame (5) is fixedly connected to one side of the welding table (1); The first electric cylinder (6) is configured as two, and both first electric cylinders (6) are installed on the support frame (5), and the output end of the first electric cylinder (6) is fixedly connected to the lifting frame (2); Lifting plate (7), the lifting plate (7) is configured as two, the two lifting plates (7) are symmetrically connected to the lifting frame (2), and the support frame (5) is provided with a lifting groove for the lifting plate (7) to slide.

3. The welding equipment for stainless steel-lined, plastic-coated composite steel pipes according to claim 2, characterized in that, The moving component includes: The second electric cylinder (8) is installed on one side of the lifting frame (2), and the output end of the second electric cylinder (8) passes through the lifting frame (2) and is fixedly connected to the adjacent moving cylinder (3). Connecting rod (9), wherein multiple connecting rods (9) are arranged in an array between two movable cylinders (3); Limiting rods (10), two limiting rods (10) are provided, and the two limiting rods (10) are symmetrically connected to the lifting frame (2). The lifting frame (2) is provided with limiting ports for the moving of the limiting rods (10).

4. The welding equipment for stainless steel-lined, plastic-coated composite steel pipes according to claim 3, characterized in that, The argon arc welding assembly includes: The first motor (11) is mounted on the outer side wall of the adjacent movable cylinder (3); The first screw (12) is rotatably disposed inside the movable cylinder (3), and the first screw (12) is fixedly connected to the output end of the first motor (11); A drive block (13) is threadedly connected to the first screw (12), and a drive port for the drive block (13) to slide is provided on the adjacent movable cylinder (3); Argon arc welding machine (14), which is installed at the bottom of the drive block (13) and has an argon arc welding head (15) installed on it.

5. The welding equipment for stainless steel-lined, plastic-coated composite steel pipes according to claim 4, characterized in that, The positioning component includes: The third electric cylinder (16) is mounted on the bottom end of the welding table (1) via a mounting bracket; Positioning block (17), two positioning blocks (17) are provided, and the positioning blocks (17) are fixedly connected to the output end of the third electric cylinder (16); Positioning strip (18), two positioning strips (18) are provided, and the two positioning strips (18) are fixedly connected to each positioning block (17). The welding table (1) is provided with a positioning port for the positioning strips (18) to slide. Positioning plate (19), two positioning plates (19) are provided, and the two positioning plates (19) are respectively fixedly connected between the plurality of positioning strips (18) and the plurality of positioning cone rods (4).

6. The welding equipment for stainless steel-lined, plastic-coated composite steel pipes according to claim 5, characterized in that, The arc welding assembly includes: A second motor (20) is mounted on the adjacent movable cylinder (3); The second screw (21) is fixedly connected to the output end of the second motor (20), and the second screw (21) is rotatably connected to the adjacent movable cylinder (3); The sliding block (22) is slidably disposed in the adjacent movable cylinder (3). The movable cylinder (3) has a sliding opening for the sliding block (22) to slide, and the sliding block (22) is threadedly connected to the second screw (21). An arc welding machine (23) is provided at the bottom end of the sliding block (22), and an arc welding head (24) is installed on the arc welding machine (23).

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