Electromagnetic welding clamp for PSP steel-plastic composite pipe

Abstract

The utility model relates to the technical field of electromagnetic welding clamps, in particular to an electromagnetic welding clamp for a PSP steel-plastic composite pipe, which comprises a welding assembly and chucks symmetrically arranged at two ends of the welding assembly, the welding assembly comprises an upper shell and a lower shell which are distributed up and down, and each chuck sequentially comprises a disc shell, three sliding blocks, three clamping jaws and a top cover from left to right. A circular groove is formed in the right end face of the disc shell. According to the electromagnetic welding clamp for the PSP steel-plastic composite pipe, the lead screws are rotated to drive the sliding blocks to do linear motion, the racks on the sliding blocks containing the lead screws are in linkage fit with the gears, the other sliding blocks are driven to do synchronous motion, the second helical teeth on the sliding blocks are meshed with the first helical teeth on the clamping jaws, the second helical teeth are meshed with the first helical teeth, and the clamping jaws are driven to do synchronous motion; the limiting grooves in the clamping jaws are matched with the limiting strips on the top cover in a clamped mode, the clamping jaws slide along the fixed positions, the structural stability is enhanced, the clamping jaws stretch out and draw back through a series of matching, and therefore pipelines with different pipe diameters can be accurately adjusted and clamped.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic welding fixture technology, specifically to an electromagnetic welding fixture for PSP steel-plastic composite pipes. Background Technology

[0002] PSP steel-plastic composite pipes are widely used in many fields such as building water supply and drainage, petrochemicals, and municipal engineering due to the high strength of steel and the corrosion resistance and insulation of plastics. Various industries have continuously increased their requirements for its usage and welding quality. With the development of materials, machinery manufacturing and electromagnetic technology, electromagnetic welding technology uses alternating magnetic fields to generate induced current to achieve welding. It can accurately control temperature and distribute heat, meeting the needs of various industries for high-quality, large-scale welding of PSP steel-plastic composite pipes.

[0003] The utility model disclosed in CN221658497U is a pipe welding fixture, including an equipment box, a motor base inserted inside the equipment box, and a rotating motor, a rotating shaft, a folding plate, and a slider inserted inside the motor base.

[0004] In the above technical solution, by rotating the motor and shaft, the entire equipment can be easily moved to the construction site to fold the folding plate to clamp the pipeline for welding, avoiding the problem of the clamps being inconvenient to carry to the site for clamping and welding. Tightening the bolts achieves the effect of clamping one of the pipelines to be welded, avoiding the problem of the other pipeline shaking when only one pipeline is clamped. By using the moving plate, the position of the left and right clamping plates can be adjusted simultaneously to clamp the pipeline. Compression springs achieve the effect of pressing down the baffle and removing the moving plate to clamp and weld the pipeline when welding the buried pipeline. However, the fixed pipe is designed for a specific pipe diameter. Once it is necessary to adapt to different pipe diameters, the entire fixed pipe and related connecting parts must be replaced, which is not only complicated to operate, but also expensive and has poor versatility. Utility Model Content

[0005] The purpose of this utility model is to provide an electromagnetic welding fixture for PSP steel-plastic composite pipes to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An electromagnetic welding fixture for PSP steel-plastic composite pipes includes a welding assembly and chucks symmetrically arranged at both ends of the welding assembly. The welding assembly includes an upper shell and a lower shell distributed vertically. Several electromagnetic coils are evenly spaced in the middle of the upper and lower shells. The chucks, from left to right, include a disc shell, three sliders, three jaws, and a top cover. A circular groove is formed on the right end face of the disc shell, and several slider slots are formed in the circular groove. Sliders are installed in each slider slot. A convex ring is provided in the middle of the circular groove, and a gear is sleeved on the convex ring. Each slider has a corresponding jaw on its right side, and the top cover is inserted between two adjacent jaws.

[0008] Preferably, the upper housing and the lower housing are connected by a hinge, the upper housing is provided with a quick-release buckle on the left side, and the lower housing is provided with a quick-release lock on the left side.

[0009] In this utility model, the upper and lower shells are connected by hinges, making them easy to open and close. When the upper and lower shells are open, it is easy to observe the internal pipe connection status. The quick-release buckle on the left side works with the quick-release lock to achieve quick locking and unlocking, improving operating efficiency. The connection is also stable and can prevent the shell from opening accidentally during equipment operation.

[0010] Preferably, the top cover is fan-shaped, and the three top covers are combined to form a circular surface. Each fan-shaped top cover has a limit strip on its left and right sides. The claws are distributed in a ring at equal intervals, and a limit groove is provided at the connection between the claws and the top cover.

[0011] In this invention, the limiting strips on both sides of the fan-shaped top cover cooperate with the limiting grooves on the claws, allowing the claws to slide along a fixed position, thereby enhancing structural stability.

[0012] Preferably, the left side of the claw is provided with a first oblique tooth, and the right side of the claw is provided with an anti-slip block at its inner end. Both the anti-slip block and the inner side of the claw are provided with several anti-slip protrusions.

[0013] In this invention, anti-slip blocks and anti-slip protrusions are provided to increase friction and enhance clamping stability.

[0014] Preferably, the sliders are arranged in a centripetal horizontal shape, one of the sliders is provided with a lead screw inside, the other sliders are provided with a slide bar inside, the inner side of the slider is provided with a rack, and the right side of the slider is provided with a second helical tooth, which meshes with the first helical tooth.

[0015] In this invention, the second helical tooth meshes with the first helical tooth to synchronize the movement of the slider and the jaws. Simultaneously, under the meshing of the second and first helical teeth, the slider and the jaws move perpendicularly and intersectingly relative to each other. When the sliders all move in a clockwise direction, the inner ends of the three jaws move closer to the center. When the sliders all move in a counterclockwise direction, the inner ends of the three jaws move outward, thus achieving tight clamping of pipes of different sizes.

[0016] Preferably, the gear is annular, with the outer teeth meshing with the rack, and the gear is rotatably connected to the convex ring.

[0017] In this invention, the outer teeth of the gear mesh with the rack on the inner side of the slider, and the linear motion of the slider driven by the rotation of the lead screw is converted into linkage between the sliders through the gear.

[0018] Preferably, the disc shell and the convex ring are integrally formed, and a claw groove is provided on the outer wall of the disc shell near the right end, corresponding to the claw. The slider is placed in the slider groove, and the claw extends through the claw groove to the outside of the disc shell. The disc shell and the top cover are fixed by adhesive bonding.

[0019] In this utility model, the disc shell is provided with a slider groove and a claw groove, in which the slider and claw are respectively placed to realize the orderly installation and movement of the components. The disc shell and the top cover are bonded and fixed to completely seal the chuck.

[0020] Preferably, a base is provided below the welding assembly, the welding assembly is fixed to the base by screws, a motor is provided at the end of the lead screw, the end of the lead screw is coaxially connected to the output shaft of the motor, a support plate is provided at the bottom of the motor, and the support plate is welded and fixed to the base.

[0021] In this invention, the base provides support for the welding assembly, the motor output shaft is coaxially connected to the end of the lead screw to provide rotational power to the lead screw, and the bottom support plate of the motor is welded and fixed to the base to ensure that the motor is stably installed and runs stably.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. In this utility model, the rotating lead screw drives the slider to make linear motion. The rack and gear on the slider containing the lead screw are linked and cooperate to drive the other sliders to move synchronously. The second helical tooth on the slider meshes with the first helical tooth on the chuck. When the slider moves, the second helical tooth meshes with the first helical tooth, driving the chuck to move synchronously. The upper limit groove of the chuck engages with the limit strip on the top cover, so that the chuck slides along a fixed position, enhancing the structural stability. Through a series of coordination, the chuck can extend and retract, thereby enabling precise adjustment and clamping of pipes of different diameters.

[0024] 2. In this utility model, the upper shell and the lower shell are connected by a hinge, and can be opened and closed with the cooperation of quick-release lock and quick-release buckle. In the open state, the docking position of the pipe and the welding condition after welding can be observed. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the electromagnetic welding fixture structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the electromagnetic welding fixture of this utility model in the open state;

[0027] Figure 3 This is a schematic diagram of the exploded structure of the chuck of this utility model;

[0028] Figure 4 This is a schematic diagram of the claw structure of this utility model;

[0029] Figure 5 This is a schematic diagram of the gear and slider position structure of this utility model;

[0030] Figure 6 This is a schematic diagram of the slider and jaw positions of this utility model.

[0031] The meanings of the labels in the diagram are as follows:

[0032] 1. Base;

[0033] 2. Chuck; 21. Top cover; 211. Limiting strip; 22. Claw; 221. Anti-slip block; 222. Limiting groove; 223. First helical tooth; 224. Anti-slip protrusion; 23. Slider; 231. Lead screw; 232. Rack; 233. Second helical tooth; 234. Slide rod; 24. Gear; 25. Disc shell; 251. Convex ring; 252. Slider groove; 253. Claw groove;

[0034] 3. Welding components; 31. Upper housing; 32. Lower housing; 33. Electromagnetic coil; 34. Quick-release lock; 35. Quick-release buckle; 36. Motor; 37. Support plate. Detailed Implementation

[0035] 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.

[0036] Please see Figures 1-6 This embodiment provides a technical solution:

[0037] An electromagnetic welding fixture for PSP steel-plastic composite pipes includes a welding assembly 3 and chucks 2 symmetrically arranged at both ends of the welding assembly 3. The chucks 2, from left to right, include a disc shell 25, three sliders 23, three jaws 22, and a top cover 21. A circular groove is opened on the right end face of the disc shell 25, and a plurality of slider grooves 252 are opened in the circular groove. A slider 23 is installed in each slider groove 252. A convex ring 251 is provided in the middle of the circular groove, and a gear 24 is sleeved on the convex ring 251. The right side of each slider 23 is engaged with a corresponding jaw 22. A top cover 21 is inserted between two adjacent jaws 22. The top cover 21 is fan-shaped, and the three top covers 21 are combined to form a circular surface. Limiting strips 211 are opened on the left and right sides of each fan shape of the top cover 21. The jaws 22 are distributed in a ring at equal intervals, and a limiting groove 222 is provided at the connection between the jaws 22 and the top cover 21.

[0038] In the utility model, the limiting strips 211 on both sides of the fan-shaped top cover 21 cooperate with the limiting grooves 222 on the claw 22, so that the claw 22 slides along a fixed position, thereby enhancing the structural stability.

[0039] Furthermore, the left side of the claw 22 is provided with a first helical tooth 223, and the right side of the claw 22 is provided with an anti-slip block 221. Both the anti-slip block 221 and the inner side of the claw 22 are provided with several anti-slip protrusions 224.

[0040] In this invention, the anti-slip block 221 and anti-slip protrusion 224 are provided to increase friction and enhance clamping stability.

[0041] Specifically, the sliders 23 are arranged in a centripetal horizontal shape. One slider 23 has a lead screw 231 inside, and the other sliders 23 have a slide bar 234 inside. The inner side of the slider 23 has a rack 232, and the right side of the slider 23 has a second helical tooth 233, which meshes with the first helical tooth 223.

[0042] In this invention, the second helical tooth 233 meshes with the first helical tooth 223 to synchronize the movement of the slider 23 and the jaw 22. Simultaneously, with the second helical tooth 233 meshing with the first helical tooth 223, the slider 23 and the jaw 22 move perpendicularly and intersectingly relative to each other. When the slider 23 moves clockwise, the inner ends of the three jaws 22 move closer to the center. When the slider 23 moves counterclockwise, the inner ends of the three jaws 22 move outward, thus achieving tight clamping of pipes of different sizes.

[0043] Among them, the gear 24 is in the shape of a ring, the outer ring teeth mesh with the rack 232, and the gear 24 is rotatably connected to the convex ring 251.

[0044] In this invention, the outer teeth of the gear 24 mesh with the rack 232 on the inner side of the slider 23. The rotation of the lead screw 231 drives the linear motion of the slider 23, which is converted into linkage between the sliders 23 through the gear 24.

[0045] In addition, the disc shell 25 and the convex ring 251 are integrally formed. A claw groove 253 is provided on the outer wall of the disc shell 25 near the right end, corresponding to the claw 22. The slider 23 is placed in the slider groove 252. The claw 22 extends through the claw groove 253 to the outside of the disc shell 25. The disc shell 25 and the top cover 21 are fixed by adhesive bonding.

[0046] In this utility model, the disc shell 25 is provided with a slider groove 252 and a claw groove 253, in which the slider 23 and the claw 22 are respectively placed to realize the orderly installation and movement of the components. The disc shell 25 is bonded and fixed to the top cover 21 to completely enclose the chuck 2.

[0047] Secondly, the welding assembly 3 includes an upper housing 31 and a lower housing 32 distributed vertically. Several electromagnetic coils 33 are evenly spaced in the middle of the upper housing 31 and the lower housing 32. The upper housing 31 and the lower housing 32 are connected by a hinge. The left side of the upper housing 31 is provided with a quick-release buckle 35, and the left side of the lower housing 32 is provided with a quick-release lock 34.

[0048] In this utility model, the upper housing 31 and the lower housing 32 are connected by a hinge, which makes it easy to open and close. When the upper housing 31 and the lower housing 32 are open, it is easy to observe the internal pipe connection status. The quick-release buckle 35 on the left side cooperates with the quick-release lock 34 to realize quick locking and unlocking, improve operating efficiency, and the connection is stable, which can prevent the housing from being opened accidentally when the equipment is running.

[0049] Specifically, a base 1 is provided below the welding assembly 3, and the welding assembly 3 is fixed to the base 1 by screws. A motor 36 is provided at the end of the lead screw 231, and the end of the lead screw 231 is coaxially connected to the output shaft of the motor 36. A support plate 37 is provided at the bottom of the motor 36, and the support plate 37 is welded and fixed to the base 1.

[0050] In this utility model, the base 1 provides support for the welding assembly 3, the output shaft of the motor 36 is coaxially connected to the end of the lead screw 231 to provide rotational power for the lead screw 231, and the bottom support plate 37 of the motor 36 is welded and fixed to the base 1 to ensure that the motor 36 is stably installed and runs stably.

[0051] In this embodiment, the electromagnetic welding fixture for PSP steel-plastic composite pipes is used by bonding and fixing the disc shell 25 containing claws 22, sliders 23, and gears 24 to the top cover 21, then bonding and fixing the two chucks 2 to the welding assembly 3, then welding and fixing them to the base 1, and finally connecting the lead screw 231 to the drive shaft of the motor 36.

[0052] When welding is required, two pipes are passed through the two side chucks 2 and joined inside the welding assembly 3. The motor 36 is electrically connected to an external power source via wires. The control switch on the outer wall of the motor 36 is activated. When the output shaft of the motor 36 rotates in the forward direction, the sliders 23 move clockwise, causing the inner ends of the three jaws 22 to move closer to the center, thus firmly clamping the outer wall of the pipe. The upper housing 31 is closed, the quick-release lock 34 is engaged, and the welding switch is activated. An alternating magnetic field is generated by the alternating current passing through the electromagnetic coil 33, inducing a current in the pipe to be welded. The thermal effect of the current causes the contact area of ​​the pipe to heat up rapidly to the melting point, thus achieving welding. After welding, the upper housing 31 is opened. After the pipe cools down, the sliders 23 are moved counterclockwise, causing the inner ends of the three jaws 22 to move outward, thus releasing the clamping of the pipe. The pipe is then removed from one end. This method can be used to clamp and weld pipes of different sizes. The overall assembly is convenient to install and easy to operate.

Claims

1. An electromagnetic welding fixture for PSP steel-plastic composite pipes, comprising a welding assembly (3) and chucks (2) symmetrically arranged at both ends of the welding assembly (3), characterized in that: The welding assembly (3) includes an upper shell (31) and a lower shell (32) distributed vertically. Several electromagnetic coils (33) are evenly spaced in the middle of the upper shell (31) and the lower shell (32). The chuck (2) includes a disc shell (25), three sliders (23), three jaws (22), and a top cover (21) from left to right. A circular groove is provided on the right end face of the disc shell (25). Several slider grooves (252) are provided in the circular groove. Sliders (23) are installed in the slider grooves (252). A convex ring (251) is provided in the middle of the circular groove. A gear (24) is sleeved on the convex ring (251). The right side of each slider (23) is matched with a corresponding jaw (22). The top cover (21) is inserted between two adjacent jaws (22).

2. The electromagnetic welding fixture for PSP steel-plastic composite pipes according to claim 1, characterized in that: The upper housing (31) and the lower housing (32) are connected by a hinge. The upper housing (31) is provided with a quick-release buckle (35) on the left side, and the lower housing (32) is provided with a quick-release lock (34) on the left side.

3. The electromagnetic welding fixture for PSP steel-plastic composite pipes according to claim 1, characterized in that: The top cover (21) is fan-shaped, and the three top covers (21) are combined to form a circular surface. Each fan-shaped top cover (21) has a limit strip (211) on both the left and right sides. The claws (22) are distributed in a ring at equal intervals. The connection between the claws (22) and the top cover (21) is provided with a limit groove (222).

4. The electromagnetic welding fixture for PSP steel-plastic composite pipes according to claim 1, characterized in that: The left side of the claw (22) is provided with a first oblique tooth (223), and the right side of the claw (22) is provided with an anti-slip block (221). The anti-slip block (221) and the inner side of the claw (22) are provided with several anti-slip protrusions (224).

5. The electromagnetic welding fixture for PSP steel-plastic composite pipes according to claim 1, characterized in that: The sliders (23) are arranged in a centripetal horizontal shape. One of the sliders (23) is provided with a lead screw (231) inside, and the other sliders (23) are provided with a slide bar (234) inside. The inner side of the slider (23) is provided with a rack (232), and the right side of the slider (23) is provided with a second helical tooth (233). The second helical tooth (233) meshes with the first helical tooth (223).

6. The electromagnetic welding fixture for PSP steel-plastic composite pipes according to claim 1, characterized in that: The gear (24) is ring-shaped, with its outer teeth meshing with the rack (232), and the gear (24) is rotatably connected to the convex ring (251).

7. The electromagnetic welding fixture for PSP steel-plastic composite pipes according to claim 1, characterized in that: The disc shell (25) and the convex ring (251) are integrally formed. A claw groove (253) is provided on the outer wall of the disc shell (25) near the right end, corresponding to the claw (22). The slider (23) is placed in the slider groove (252). The claw (22) extends through the claw groove (253) to the outside of the disc shell (25). The disc shell (25) and the top cover (21) are fixed by adhesive bonding.

8. The electromagnetic welding fixture for PSP steel-plastic composite pipes according to claim 5, characterized in that: The welding assembly (3) is provided with a base (1) below it. The welding assembly (3) and the base (1) are fixed by screws. The end of the lead screw (231) is provided with a motor (36). The end of the lead screw (231) is coaxially connected with the output shaft of the motor (36). The bottom of the motor (36) is provided with a support plate (37). The support plate (37) is welded and fixed to the base (1).

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