Polyurethane tube deformation CNC shaping device

Abstract

The present invention relates to a polyurethane tube deformation, shaping, and rounding device, which includes a frame, a rounding disc, and a rounding jack assembly. The rounding disc is fixedly mounted on the frame, and the rounding jack assemblies are evenly spaced and installed around the rounding disc. The rounding jack assembly includes a base, a servo motor, a worm gear drive mechanism, a screw, and a grab hook. The base is fixedly mounted on the outer periphery of the rounding disc, and the worm gear mechanism is mounted on the base. The worm is driven by the servo motor, and the outer portion of the worm gear meshes with the worm gear for transmission, and the inner portion of the worm gear meshes with the screw gear for transmission. The screws of each rounding jack assembly extend to the center of the rounding disc, and a grab hook is fixedly mounted on one end of the screw gear facing the center of the rounding disc. The polyurethane tube deformation, shaping, and rounding device of the present invention adopts automated rounding, greatly facilitating the insertion of steel pipes, greatly saving pipe insertion time, and can insert the entire pipe in one rounding operation, effectively improving work efficiency.

Description

Technical Field

[0001] The invention relates to a polyurethane tube shaping device, in particular to a polyurethane tube deformation numerical control shaping and rounding device. Background Art

[0002] Polyurethane insulated pipes are roughly divided into four types: prefabricated direct-buried high-density polyethylene polyurethane insulated pipe, which consists of a working steel pipe, a polyurethane insulation layer, and a high-density polyethylene jacket pipe, and is mainly used for heating; direct-buried steel-jacketed steam insulated pipe, which consists of a working steel pipe, inorganic insulation materials (glass wool, aluminum silicate, calcium silicate, rock wool, etc.) and an outer protective anti-corrosion steel pipe, and is mainly used for conveying steam; FRP insulated pipe, which consists of a working steel pipe, a polyurethane insulation layer and a FRP outer protective layer, and is often used overhead; spiral iron insulated pipe, which includes a working steel pipe, insulation materials and a spiral iron outer protective layer. When the conveying medium is steam, double-layer insulation materials can be used, the inner layer is inorganic insulation materials, and the outer layer is polyurethane. When the conveying medium is hot water, polyurethane can be directly used for the insulation layer.

[0003] The polyurethane outer sleeve of the polyurethane insulation pipe has a large diameter and poor strength, which causes great deformation, especially when placed for a long time. The larger the diameter, the greater the deformation and the stress. It is estimated to be about 800 kilograms of force, which brings great trouble to the insertion of the steel pipe and is time-consuming and labor-intensive. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a CNC shaping and rounding device for polyurethane tube deformation, which adopts automatic rounding, greatly facilitates the insertion of steel pipes, greatly saves the time of sleeve insertion, and can be rounded at one time, so that the entire pipe can be inserted, which greatly improves the efficiency.

[0005] The present invention solves the technical problem by the following technical solutions:

[0006] A polyurethane tube deformation, shaping and rounding device is characterized in that it includes a frame, a rounding disc, and a rounding jack assembly. The rounding disc is fixedly mounted on the frame, and the rounding jack assemblies are evenly spaced and installed on the circumference of the rounding disc. The rounding jack assembly includes a base, a servo motor, a worm gear mechanism, a screw and a grab hook. The base is fixedly mounted on the outer circumference of the rounding disc, and the worm gear mechanism is installed on the base. The worm is driven by the servo motor, the outside of the worm gear is engaged with the worm gear for transmission, and the inside of the worm gear is engaged with the screw gear for transmission; the screws of each rounding jack assembly are all facing the center of the rounding disc, and the grab hook is fixedly mounted on the end of the screw gear facing the center of the rounding disc.

[0007] Moreover, the lower part of the return disc is fixedly installed with the lifting frame, the lifting frame is supported and installed on the frame through the lifting guide rail, and a hydraulic cylinder is installed between the return disc and the frame, and the return disc is driven by the hydraulic cylinder to guide and lift.

[0008] Moreover, a slider is fixed on the bottom of the frame, and the frame is installed on the parallel linear guide rails through the slider at the bottom.

[0009] Moreover, the servo motors of the respective return jack assemblies are connected to an electronic control unit.

[0010] The advantages and beneficial effects of the present invention are:

[0011] 1. The polyurethane tube deformation CNC shaping and rounding device of the present invention has a large deformation and stress of about 800 kg force. To meet this demand, a worm gear and trapezoidal lead screw nut structure is adopted, which is driven by a servo motor. One end of the lead screw has a hook for hooking the deformed part of the polyurethane tube and moving outward at the same time to achieve a concentric circle with the reference outer sleeve, thereby rounding the polyurethane tube and facilitating its pushing into the support frame. The rounding is achieved in one time and the support frame can be pushed continuously, greatly improving production efficiency.

[0012] 2. The polyurethane tube deformation CNC shaping and rounding device of the present invention has a return disc whose lower part is fixedly mounted on the lifting frame, and the lifting frame is mounted on the frame through a lifting guide rail. A hydraulic cylinder is installed between the return disc and the frame, and the return disc is driven by the hydraulic cylinder to be raised and lowered. The cylindrical guide rail is used for guidance, and the hydraulic cylinder realizes hydraulic inching control of the height. Graduations are marked on the guide column to meet the needs of changes in the center of the polyurethane tube. After the height is adjusted, the guide rail is locked with an opening and closing ring to determine the position.

[0013] 3. The polyurethane tube deformation numerical control shaping and rounding device of the present invention has a frame with the bottom mounted on parallel linear guide rails, which can achieve relatively precise forward and backward movement. It is driven by a hydraulic cylinder and has point-controlled forward and backward movement.

[0014] 4. In the polyurethane tube deformation CNC shaping and rounding device of the present invention, the servo motors of each rounding jack assembly are connected to the electronic control unit, which controls the servo drive, closed-loop control, and synchronous and precise control of the screw movement. It can also be driven individually, with synchronous drive as the main method. When an error occurs, it can be switched to single action.

[0015] 5. The polyurethane tube deformation CNC shaping and rounding device of the present invention is equipped with a precise laser detection sensor at the screw rod driven by the servo motor, which detects the roundness error or out-of-roundness of the polyurethane jacket in real time and displays it on the display panel. If the synchronization cannot meet the roundness requirement, the system can be switched to single-action control and independently control the drive according to the error display to achieve the ideal roundness requirement.

[0016] 6. The polyurethane tube deformation CNC shaping and rounding device of the present invention has a standard rounding diameter of 1900mm and is applicable to a polyurethane jacket diameter range of 1700mm. It also has a matching control system that meets the requirements of longitudinal displacement and lifting. It adopts automatic rounding, which greatly facilitates the insertion of steel pipes and greatly saves casing time. Moreover, it can be rounded in one go and the entire pipe can be inserted, effectively improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 for Figure 1 A top view of

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Description of reference numerals:

[0021] 1- return disc, 2- return jack assembly, 3- lead screw, 4- base, 5- servo motor, 6- grab hook, 7- lifting frame, 8- fixed guide sleeve, 9- lifting guide rail, 10- linear bearing, 11- frame, 12- slide block, 13- linear guide rail, 14- hydraulic cylinder. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the scope of protection of the present invention cannot be limited thereto.

[0023] A CNC-controlled rounding device for deforming and shaping polyurethane tubes comprises a frame 11, a rounding disc 1, and a rounding jack assembly 2. The rounding disc is fixedly mounted on the frame, and the rounding jack assemblies are evenly spaced around the rounding disc. The rounding jack assembly comprises a base 4, a servo motor 5, a worm gear mechanism, a lead screw 3, and a grab hook 6. The base is fixedly mounted on the outer circumference of the rounding disc, and the worm gear mechanism is mounted on the base. The worm is driven by the servo motor, and the worm gear meshes with the worm on the outside. The worm gear has a nut inside that meshes with the lead screw. The lead screws of each rounding jack assembly are all oriented toward the center of the rounding disc, and a grab hook is fixed to the end of the lead screw that faces the center of the disc.

[0024] The lower portion of the return disc is fixedly mounted to a lifting frame 7, which is supported on the frame by lifting guide rails 9. Fixed guide sleeves 8 are installed at the four corners of the lifting frame, and cylindrical guide rails are installed within the fixed guide sleeves. Corresponding linear bearings 10 are installed on the frame. A hydraulic cylinder 14 is installed between the return disc and the frame, driving the return disc to rise and fall. Sliders 12 are fixedly mounted at the bottom of the frame and mounted on parallel linear guide rails 13. The servo motors of each return jack assembly are connected to the electronic control unit.

[0025] The working principle of the polyurethane tube deformation numerical control shaping and rounding device of the present invention is:

[0026] The lower part of the return disc is fixedly installed on the lifting frame, and the lifting frame is supported and installed on the frame through the lifting guide rail. A hydraulic cylinder is installed between the return disc and the frame, and the return disc is driven by the hydraulic cylinder to move up and down. The cylindrical guide rail is used for guidance, and the hydraulic cylinder realizes hydraulic inching control of the height. The scale is marked on the guide column to adapt to the needs of the center change of the polyurethane tube. After the height is adjusted, the opening and closing ring is used to lock the guide rail to determine the position.

[0027] Driven by a servo motor, one end of the lead screw has a short arc-shaped hook for hooking the deformed part of the polyurethane tube and moving outward at the same time to achieve a concentric circle with the reference sleeve, thereby squaring the polyurethane tube and facilitating pushing it into the support frame. It can be squaring in one go and the support frame can be pushed continuously, greatly improving production efficiency.

[0028] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A polyurethane tube deformation and rounding device, characterized by: It includes a frame, a return disc, and a return jack assembly. The return disc is fixedly mounted on the frame, and the return jack assemblies are evenly spaced and installed on the circumference of the return disc. The return jack assembly includes a base, a servo motor, a worm gear mechanism, a screw and a grab hook. The base is fixedly mounted on the outer circumference of the return disc, and the worm gear mechanism is mounted on the base. The worm is driven by the servo motor. The outside of the worm gear is meshed with the worm gear for transmission, and the inside of the worm gear is meshed with the screw gear for transmission. The screws of each return jack assembly are all facing the center of the return disc, and a grab hook is fixedly mounted on one end of the screw gear facing the center of the return disc. The lower part of the return disc is fixedly mounted on the lifting frame, and the lifting frame is supported and mounted on the frame through a lifting guide rail. A hydraulic cylinder is installed between the return disc and the frame, and the return disc is driven by the hydraulic cylinder to guide and lift. The bottom of the frame is fixed with a slider, and the frame is installed on a parallel linear guide rail through the slider at the bottom; Driven by a servo motor, one end of the screw rod has a short arc-shaped hook for hooking the deformed part of the polyurethane tube and moving outward at the same time to achieve a concentric circle with the reference sleeve, thereby rounding the polyurethane tube and facilitating pushing it into the support frame to achieve one-time rounding.

2. The polyurethane tube deformation CNC shaping and rounding device according to claim 1, characterized in that: The servo motors of the respective return jack assemblies are connected to the electronic control unit.

Images