Rotary stand for the production of plastic coated steel pipes

Abstract

The utility model provides a kind of rotary gantry for production plastic-coated steel pipe, including bottom plate, supporting device and driving device, bottom plate two ends are respectively slidably connected one supporting device, one driving device, and supporting device is parallelly arranged in the front end of driving device, driving device includes translation mechanism and inner expansion mechanism, inner expansion mechanism is fixedly arranged on translation mechanism, translation mechanism is slidably arranged on bottom plate, the supporting device is used to support the steel pipe placed horizontally, the inner expansion mechanism is opened to the steel pipe from inside and fixed to steel pipe, it can match the steel pipe of different diameter and wall thickness, the translation mechanism is used to drive inner expansion mechanism to approach or away from supporting device along bottom plate. The utility model discloses a kind of rotary gantry for production plastic-coated steel pipe, different specifications of steel pipe can be stably rotated, strong adaptability, simple structure, use, ensure the coating quality of steel pipe.

Description

Technical Field

[0001] This utility model belongs to the field of plastic-coated steel pipe processing technology, and in particular relates to a rotary table for producing plastic-coated steel pipes. Background Technology

[0002] Plastic coating of steel pipes involves placing a heated steel pipe on a pair of rollers, which rotate to drive the pipe's rotation. Simultaneously, a hot-melt powder is evenly sprinkled above the pipe; the powder melts upon contact with the heat, forming a uniformly thick plastic coating on the pipe's surface. Current technology typically uses two sets of support rollers to support and drive the steel pipe. This structure has limited applicability, weak versatility, and poor stability, potentially leading to accidents during the pipe's rotation. Summary of the Invention

[0003] In view of this, the present invention aims to propose a rotating table for producing plastic-coated steel pipes, so as to solve the problems of limited applicability, weak versatility and poor stability of the two sets of support rollers in the prior art.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A rotary table for producing plastic-coated steel pipes includes a base plate, a support device, and a drive device. A support device and a drive device are slidably connected to both ends of the base plate, and the support device is arranged parallel to the front end of the drive device. The drive device includes a translation mechanism and an internal expansion mechanism. The internal expansion mechanism is fixedly mounted on the translation mechanism, and the translation mechanism is slidably mounted on the base plate.

[0006] Furthermore, the support device includes a bracket, a fixed frame, and a lifting mechanism. The bracket is slidably mounted on the base plate, and the fixed frame is mounted above the bracket. The bracket and the fixed frame are connected by the lifting mechanism. The fixed frame has a V-shaped cross-section, and multiple sets of grooves are provided at the top of the fixed frame, on which support rollers are placed.

[0007] Furthermore, the lifting mechanism includes a lead screw and a lifting drive component. The lifting drive component is a worm gear drive structure. The lifting drive component is externally connected to a lifting motor. The lifting drive component is fixedly mounted on the top of the bracket. The lead screw passes through the worm gear of the lifting drive component and the bracket in sequence. The lifting drive component is used to drive the lead screw to move linearly. The top of the lead screw is fixedly connected to the bottom of the fixed frame.

[0008] Furthermore, the lifting mechanism also includes two guide columns, which are arranged parallel to each other on both sides of the lead screw. One end of each guide column is fixedly connected to the bottom of the fixed frame. The frame is provided with sliding holes, and the periphery of each guide column is slidably connected to a sliding hole.

[0009] Furthermore, the translation mechanism includes a movable base and a translation motor mounted on its upper end. The output end of the translation motor passes through the bottom of the movable base and is fixedly connected to a first gear. A rack is provided on the base plate, and the first gear meshes with the rack. An internal expansion mechanism is fixedly mounted on the movable base.

[0010] Furthermore, the internal expansion mechanism includes a mounting frame, a linkage assembly, a support plate, and an execution assembly. The bottom of the mounting frame is fixedly mounted on the movable seat, the execution assembly passes through the upper end of the mounting frame, and the execution assembly is rotatably connected to the mounting frame. The execution assembly is provided with multiple linkage assemblies that rotate circumferentially, and each linkage assembly is provided with a support plate that rotates rotatably.

[0011] Furthermore, the support plate has anti-slip texture on its outer perimeter, and a limiting baffle is provided on the side of the support plate near the mounting bracket.

[0012] Furthermore, the execution component includes a first connector, a second connector, and a threaded rod. The first connector is sleeved around the front end of the second connector. The connecting rod assembly is rotatably connected to the first connector and the second connector respectively. The threaded rod passes through the second connector and the first connector sequentially from back to front. The front end of the first connector is threadedly connected to the outer periphery of the threaded rod. The rear end of the second connector is rotatably connected to the outer periphery of the threaded rod. The outer periphery of the second connector is rotatably connected to the mounting bracket.

[0013] Furthermore, the internal expansion mechanism also includes a rotary drive component, which includes a rotary motor and a second gear at its output end. The second gear is connected to the rear end of the second connecting member via a chain drive, and the rotary motor is fixedly mounted in the middle of the mounting frame.

[0014] Furthermore, the first connector is provided with multiple through slots along the circumferential direction, each through slot being arranged along the axial direction of the first connector, and the front end periphery of the second connector is provided with multiple guide rods along the circumferential direction, with each guide rod corresponding to a through slot, and the periphery of each guide rod being slidably arranged in the through slot.

[0015] Compared with the prior art, the rotating platform described in this utility model has the following advantages:

[0016] (1) The rotating platform for producing plastic-coated steel pipes described in this utility model has two symmetrical support devices, which makes the support more stable. The fixed frame can support various steel pipes with different outer diameters. The structure is simple, easy to use, and increases versatility. The lifting drive can be freely adjusted to rise and fall, and it is easy to install. The two internal expansion mechanisms can provide stable support for both ends of the steel pipe. At the same time, it can match steel pipes with different inner diameters and make them rotate smoothly, thus ensuring the plastic coating quality of the steel pipe.

[0017] (2) The rotating table for producing plastic-coated steel pipes described in this utility model increases the stability of the plastic coating rotation process by setting a through groove on the first connecting member and a guide rod on the second connecting member, thereby ensuring the quality of plastic coating of the steel pipe. Attached Figure Description

[0018] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of a rotary table for producing plastic-coated steel pipes according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the support device described in an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the driving device described in an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the internal expansion mechanism described in an embodiment of the present utility model;

[0023] Figure 5 This is a schematic cross-sectional view of the execution component described in an embodiment of the present utility model;

[0024] Figure 6 This is an exploded view of the first and second connectors described in an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Base plate; 2-Support device; 3-Drive device; 31-Translation mechanism; 32-Internal expansion mechanism; 21-Bracket; 22-Fixed frame; 23-Lifting mechanism; 24-Guide column; 231-Lifting drive component; 232-Screw; 311-Moving seat; 312-Translation motor; 313-First gear; 321-Mounting frame; 322-Linkage assembly; 323-Support plate; 324-Rotation drive component; 325-First connecting component; 326-Second connecting component; 327-Threaded rod. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] like Figure 1-6 As shown, a rotating platform for producing plastic-coated steel pipes includes a base plate 1, a support device 2, and a drive device 3. The base plate 1 has a support device 2 and a drive device 3 slidably connected to its two ends, with the support device 2 arranged parallel to the front end of the drive device 3. The drive device 3 includes a translation mechanism 31 and an internal expansion mechanism 32. The internal expansion mechanism 32 is fixedly mounted on the translation mechanism 31, which is slidably mounted on the base plate 1. The support device 2 supports horizontally placed steel pipes, and the internal expansion mechanism 32 expands from the inside of the steel pipe to fix it, accommodating steel pipes of different inner diameters. The translation mechanism 31 drives the internal expansion mechanism 32 to move closer to or further away from the support device 2 along the base plate 1. The two internal expansion mechanisms 32 provide stable support to both ends of the steel pipe and can accommodate steel pipes of different lengths, ensuring smooth rotation and guaranteeing the quality of the plastic coating.

[0032] like Figure 2As shown, the support device 2 includes a bracket 21, a fixed frame 22, and a lifting mechanism 23. The bracket 21 is slidably mounted on the base plate 1, and the fixed frame 22 is mounted above the bracket 21. The bracket 21 and the fixed frame 22 are connected by the lifting mechanism 23. The fixed frame 22 has a V-shaped cross-section, and multiple sets of grooves are provided at the top of the fixed frame 22. Support rollers are placed on the grooves to support the steel pipe. The supporting part of the support roller is wrapped with soft materials such as nylon or rubber to prevent scratches and absorb vibrations and noise generated by mechanical collisions, prevent bolts from loosening, and ensure stable operation of the equipment. The lifting mechanism 23 includes a lead screw 232 and a lifting drive component 231. The lifting drive component 231 is a worm gear drive structure. The lifting drive component 231 is externally connected to the lifting motor and is fixedly mounted on the top of the bracket 21. The lead screw 232 passes sequentially through the worm gear of the lifting drive component 231 and the bracket 21, and the lifting drive component 231 drives the lead screw 232 to move linearly. The top of the lead screw 232 is fixedly connected to the bottom of the fixed frame 22. The lifting mechanism 23 also includes two guide posts 24, which are arranged parallel to each other on both sides of the lead screw 232. One end of each guide post 24 is fixedly connected to the bottom of the fixed frame 22. The bracket 21 has sliding holes, and the outer periphery of each guide post 24 is slidably connected to one of the sliding holes. The guide posts 24 prevent the lead screw 232 from swaying, making the lifting more stable and allowing for free adjustment of the rise and fall, facilitating installation. Figure 3 As shown, the translation mechanism 31 includes a movable base 311 and a translation motor 312 disposed on its upper end. The output end of the translation motor 312 passes through the bottom of the movable base 311, and the output end of the translation motor 312 is fixedly connected to the first gear 313. A rack is provided on the base plate 1, and the first gear 313 meshes with the rack. The internal expansion mechanism 32 is fixedly disposed on the movable base 311.

[0033] During implementation, the distance between the supports 21 of the two support devices 2 is set according to the length of the steel pipe to be coated. The supports 21 are fixed to the base plate 1 by the first bolt. The position of the support rollers on the fixed frame 22 is set according to the outer diameter of the steel pipe, so that the two support rollers can support the steel pipe. The two sides of the support rollers are fixed to the two sides of the fixed frame 22 by nuts. The fixed frame 22 can support various steel pipes with different outer diameters, increasing the versatility of the equipment. The outer end of the worm gear on the lifting drive component 231 is connected to a lifting motor. The lifting motor is fixed on the support 21. The top end of the screw 232 is fixedly connected to the bottom of the fixed frame 22. The lifting drive component 231 includes an outer... The casing, worm gear, and worm are connected by a threaded screw 232 to the worm gear. The outer periphery of the worm gear and the outer periphery of the worm are rotatably connected to the casing, and the outer periphery of the worm gear meshes with the outer periphery of the worm. The rotation of the lifting motor drives the worm to rotate, which in turn drives the worm gear to rotate. The rotation of the worm gear drives the screw 232 to rise and fall, which in turn drives the fixed frame 22 to rise and fall, so that the steel pipe and the internal expansion mechanism 32 are located on the same axis. The translation motor 312 drives the moving seat 311 to move along the base plate 1 toward the fixed frame 22, so that the internal expansion mechanism 32 is located inside the steel pipe end. By setting the internal expansion mechanism 32 to expand and fix the steel pipe inside the steel pipe, it can be adapted to steel pipes with different inner diameters.

[0034] like Figure 4 As shown, the internal expansion mechanism 32 includes a mounting frame 321, a connecting rod assembly 322, a support plate 323, and an execution component. The bottom of the mounting frame 321 is fixedly mounted on the movable seat 311. The execution component passes through the upper end of the mounting frame 321 and is rotatably connected to the mounting frame 321. Multiple connecting rod assemblies 322 are rotatably mounted on the execution component along its circumferential direction. Each connecting rod assembly 322 is rotatably mounted on a support plate 323. The support plate 323 has anti-slip textures on its outer periphery to increase the friction between the outer periphery of the support plate and the inner wall of the steel pipe, thereby increasing the stability of the support. A limiting baffle is provided on the side of the support plate 323 closest to the mounting frame 321 to limit the advancing distance of the execution component, ensuring the safe and precise operation of the mechanism. Figure 5 As shown, the execution component includes a first connector 325, a second connector 326, and a threaded rod 327. The first connector 325 is sleeved around the front end of the second connector 326. The connecting rod assembly 322 is rotatably connected to the first connector 325 and the second connector 326 respectively. The threaded rod 327 passes through the second connector 326 and the first connector 325 sequentially from back to front. The front end of the first connector 325 is threadedly connected to the outer periphery of the threaded rod 327. The rear end of the second connector 326 is rotatably connected to the outer periphery of the threaded rod 327. The outer periphery of the second connector 326 is rotatably connected to the mounting bracket 321. Figure 3As shown, the internal expansion mechanism 32 further includes a rotary drive component 324, which includes a rotary motor and a second gear at its output end. The second gear is connected to the rear end of the second connecting component 326 via a chain drive. The rotary motor is fixedly mounted in the middle of the mounting bracket 321. Figure 6 As shown, the first connector 325 has multiple through slots 329 along the circumferential direction. Each through slot 329 is arranged along the axial direction of the first connector 325. The front end periphery of the second connector 326 has multiple guide rods 328 along the circumferential direction. Each guide rod 328 corresponds to a through slot 329. The periphery of each guide rod 328 is slidably arranged in the through slot 329. The cooperation between the guide rod 328 and the through slot 329 can increase the stability of the plastic coating rotation process and ensure the quality of the plastic coating of the steel pipe.

[0035] In implementation, the rear end of the threaded rod 327 can be connected to a hand crank or an electric motor, allowing manual or automatic control of the rotation of the threaded rod 327. The rotation of the threaded rod 327 drives the first connecting member 325 to move closer to or away from the second connecting member 326, which in turn drives the support plate 323 to move closer to or away from the inner wall of the steel pipe via the connecting rod assembly 322, thereby fixing the steel pipe. The rotary motor forms a synchronous transmission mechanism with the second connecting member 326 via a chain. The rotary motor drives the second connecting member 326 to rotate, which in turn drives the steel pipe to rotate. Through the coordinated operation of the internal expansion mechanism 32 and the support device 2, the steel pipe can be stably supported. It can be matched with steel pipes of different inner diameters, ensuring their smooth rotation and guaranteeing the quality of the plastic coating of the steel pipe.

[0036] The working principle of a rotating platform for producing plastic-coated steel pipes: During operation, the distance between two support devices 2 is set according to the size of the steel pipe, and the position of the support rollers on the fixed frame 22 is set so that the two support rollers can support the steel pipe. The lifting drive component 231 drives the screw 232 to rise and fall, which in turn drives the fixed frame 22 to rise and fall, so that the steel pipe and the internal expansion mechanism 32 are in the same axial direction. The translation motor 312 drives the moving seat 311 to move along the base plate 1 towards the fixed frame 22, so that the internal expansion mechanism 32 is located inside the steel pipe end. By setting the internal expansion mechanism 32 to expand and fix the steel pipe inside the steel pipe, the rotation motor drives the second connecting component 326 to rotate, which in turn drives the steel pipe to rotate. Through the coordinated operation of the internal expansion mechanism 32 and the support device 2, the steel pipe can be stably supported. It can match steel pipes of different diameters and wall thicknesses, and can make them rotate smoothly, ensuring the plastic coating quality of the steel pipe.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary table for producing plastic-coated steel pipes, characterized in that: It includes a base plate (1), a support device (2) and a drive device (3). The base plate (1) is slidably connected to a support device (2) and a drive device (3) at both ends. The support device (2) is arranged parallel to the front end of the drive device (3). The drive device (3) includes a translation mechanism (31) and an internal expansion mechanism (32). The internal expansion mechanism (32) is fixedly arranged on the translation mechanism (31), and the translation mechanism (31) is slidably arranged on the base plate (1).

2. The rotary table for producing plastic-coated steel pipes according to claim 1, characterized in that: The support device (2) includes a bracket (21), a fixed frame (22) and a lifting mechanism (23). The bracket (21) is slidably mounted on the base plate (1), and the fixed frame (22) is mounted above the bracket (21). The bracket (21) and the fixed frame (22) are connected by the lifting mechanism (23). The fixed frame (22) has a V-shaped cross section. The top of the fixed frame (22) is provided with multiple sets of grooves, and support rollers are placed on the grooves.

3. A rotary table for producing plastic-coated steel pipes according to claim 2, characterized in that: The lifting mechanism (23) includes a lead screw (232) and a lifting drive component (231). The lifting drive component (231) is a worm gear drive structure. The lifting drive component (231) is externally connected to a lifting motor. The lifting drive component (231) is fixedly installed at the top of the bracket (21). The lead screw (232) passes through the worm gear of the lifting drive component (231) and the bracket (21) in sequence. The lifting drive component (231) is used to drive the lead screw (232) to move linearly. The top of the lead screw (232) is fixedly connected to the bottom of the fixed frame (22).

4. A rotary table for producing plastic-coated steel pipes according to claim 3, characterized in that: The lifting mechanism (23) also includes two guide columns (24), which are arranged in parallel on both sides of the lead screw (232). One end of each guide column (24) is fixedly connected to the bottom of the fixed frame (22). The bracket (21) is provided with a sliding hole, and the periphery of each guide column (24) is slidably connected to a sliding hole.

5. A rotary table for producing plastic-coated steel pipes according to claim 1, characterized in that: The translation mechanism (31) includes a movable base (311) and a translation motor (312) installed on its upper end. The output end of the translation motor (312) passes through the bottom of the movable base (311), and the output end of the translation motor (312) is fixedly connected to the first gear (313). A rack is provided on the base plate (1), and the first gear (313) meshes with the rack. The internal expansion mechanism (32) is fixedly installed on the movable base (311).

6. A rotary table for producing plastic-coated steel pipes according to claim 1, characterized in that: The internal expansion mechanism (32) includes a mounting frame (321), a linkage assembly (322), a support plate (323), and an actuation assembly. The bottom of the mounting frame (321) is fixedly mounted on the movable seat (311). The actuation assembly passes through the upper end of the mounting frame (321) and is rotatably connected to the mounting frame (321). The actuation assembly is provided with multiple linkage assemblies (322) rotatably along the circumference. Each linkage assembly (322) is provided with a support plate (323) rotatably mounted on it.

7. A rotary table for producing plastic-coated steel pipes according to claim 6, characterized in that: The support plate (323) has anti-slip texture on its outer perimeter, and a limiting baffle is provided on the side of the support plate (323) near the mounting bracket.

8. A rotary table for producing plastic-coated steel pipes according to claim 6, characterized in that: The actuating component includes a first connector (325), a second connector (326), and a threaded rod (327). The first connector (325) is sleeved on the front periphery of the second connector (326). The connecting rod assembly (322) is rotatably connected to the first connector (325) and the second connector (326) respectively. The threaded rod (327) passes through the second connector (326) and the first connector (325) sequentially from back to front. The front end of the first connector (325) is threadedly connected to the periphery of the threaded rod (327). The rear end of the second connector (326) is rotatably connected to the periphery of the threaded rod (327). The periphery of the second connector (326) is rotatably connected to the mounting bracket (321).

9. A rotary table for producing plastic-coated steel pipes according to claim 8, characterized in that: The internal expansion mechanism (32) also includes a rotary drive (324), which includes a rotary motor and a second gear at its output end. The second gear is connected to the rear end of the second connector (326) via a chain drive. The rotary motor is fixedly installed in the middle of the mounting bracket (321).

10. A rotary table for producing plastic-coated steel pipes according to claim 8, characterized in that: The first connector (325) has multiple through slots (329) along the circumferential direction. Each through slot (329) is arranged axially along the first connector (325). The front end periphery of the second connector (326) has multiple guide rods (328) along the circumferential direction. Each guide rod (328) corresponds to a through slot (329) and the periphery of each guide rod (328) is slidably arranged in the through slot (329).

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