Liner tube flanging machine for corrosion-resistant lined pipe

Abstract

The application provides a lining pipe flanging forming machine for anticorrosive lining pipeline, and belongs to the technical field of flanging forming machines.The application comprises a flange type steel pipe for penetrating into a fluoroplastic pipe, a workbench table provided with a heating device and a roller cone base on both sides respectively, and the flange type steel pipe is arranged on the workbench table and can rotate on the workbench table;the roller cone base is provided with a roller cone angle adjusting mechanism for adjusting the flanging roller cone angle, and the flanging roller cone is arranged on the roller cone angle adjusting mechanism.The application does not need a heavy convex die, and the flange type steel pipe is matched with the heating device to surround and heat the fluoroplastic pipe, so that the uniform heating effect is achieved, and the application is relatively safe and easy to control;the flanging roller cone is matched with the roller cone angle adjusting mechanism to make the flanging roller cone complete the flanging work along the inner wall of the fluoroplastic pipe in a gradual manner, and the product is tightly attached to the flange surface and does not have eccentricity problems.

Description

Technical Field

[0001] This invention relates to the field of flanging forming machine technology, and more particularly to a flanging forming machine for inner lining pipes used in anti-corrosion lined pipes. Background Technology

[0002] Polytetrafluoroethylene (PTFE) is known as the "King of Plastics" and is widely used in the fluorochemical industry, including in petroleum, chemical, electronics, medical, and machinery sectors. Its applications in pipeline engineering are also significant.

[0003] 1. In the food and pharmaceutical industries, it is suitable for conveying steam, chemicals, medicines, etc.

[0004] 2. Used in the aerospace industry for transporting hydraulic fluids, such as pressure pipes used in spacecraft like jets and rockets for high-speed fuel delivery.

[0005] 3. Transportation of highly corrosive media in the chemical industry and channels for high-purity fluids in the pharmaceutical industry.

[0006] 4. In civilian industries, it is suitable for use as a connecting part for hydraulic, pneumatic, and steam conveying in industries such as rubber, plastics, pharmaceuticals, clothing, shipbuilding, automobiles, machine tools, welding machines, diesel engines, and papermaking.

[0007] 5. In the electronics industry, process liquids are used for the rotation and storage of semiconductor or wafer fabrication.

[0008] 6. Energy industry connections such as waste gas treatment or cooling towers in power plants.

[0009] The existing processing method for fluoroplastic lining flanged steel pipes involves inserting the fluoroplastic pipe into the steel pipe, heating the pre-flanged fluoroplastic pipe with gas, and then pushing the heated fluoroplastic pipe towards the flange face through a convex flanging mold to shape it.

[0010] Existing technical problems and disadvantages:

[0011] 1) Artificial heating using gas often results in unstable material expansion, which has many drawbacks due to human factors.

[0012] 2) Gas processing poses safety concerns due to the potential for fire.

[0013] 3) Existing flanging molds are cumbersome and difficult to operate in large-diameter construction, resulting in a high failure rate.

[0014] 4) Existing technology uses a convex mold to axially push and squeeze the pipe during the flanging process, resulting in poor product appearance quality.

[0015] 5) Existing technologies using convex molds for flanging are prone to causing difficulty in centering, resulting in eccentricity of the flanged surface. Summary of the Invention

[0016] In view of this, in order to overcome the above-mentioned shortcomings of the prior art, the present invention provides an inner lining pipe flanging forming machine for anti-corrosion lined pipes. It does not require a bulky convex mold. It uses a flange-type steel pipe with a heating device to heat the fluoroplastic pipe in a circular manner, achieving a uniform heating effect. It is relatively safe and easy to control. The flanging roller cone with a roller cone angle adjustment mechanism allows the flanging roller cone to gradually complete the flanging work along the inner wall of the fluoroplastic pipe. The product fits tightly to the flange surface and does not produce eccentricity problems.

[0017] To achieve the above objectives, the present invention provides the following technical solution:

[0018] A pipe lining forming machine for corrosion-resistant lined pipes includes:

[0019] Flange-type steel pipes are used to insert fluoroplastic pipes;

[0020] The workbench is equipped with heating devices and roller cone bases on both sides;

[0021] The flange-shaped steel pipe is placed on the workbench and can rotate on the workbench;

[0022] The roller cone base is provided with a roller cone angle adjustment mechanism for adjusting the angle of the flanging roller cone, and the flanging roller cone is disposed on the roller cone angle adjustment mechanism.

[0023] Preferably, the roller cone base is a roller cone adjustment seat, which is used to adjust the height of the flanged roller cone.

[0024] Preferably, the roller cone angle adjustment mechanism includes a drive device and an arc-shaped groove;

[0025] The driving device drives the end of the flanging roller cone away from the fluoroplastic pipe to move along the arc-shaped groove.

[0026] Preferably, the roller cone base is slidably connected to the workbench.

[0027] Preferably, the workbench is provided with front rollers and rear rollers;

[0028] The flange-shaped steel pipe is positioned within the groove formed by the front and rear rolling wheels and rotates under the drive of the front and rear rolling wheels.

[0029] Preferably, the heating device is a hot air gun.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The inner lining pipe flanging forming machine provided by this invention does not require a bulky convex mold. It can achieve the processing by using a flanging roller cone and a roller cone angle adjustment mechanism. It is easy to operate, not limited by size, and has a good appearance quality of flanging according to the material characteristics. It uses a flange-type steel pipe with a heating device to heat the fluoroplastic pipe in a circular manner to achieve a uniform heating effect, which is relatively safe and easy to control. The flanging roller cone with roller cone angle adjustment mechanism allows the flanging roller cone to gradually complete the flanging work along the inner wall of the fluoroplastic pipe. The product fits tightly to the flange surface and does not produce eccentricity problems.

[0032] The inner lining pipe flanging forming machine provided by this invention for anti-corrosion lined pipes creates a revolutionary technology that overturns conventional methods. The resulting product has a good appearance quality and does not compress the plastic, thus not affecting its performance.

[0033] This invention offers stable and high-precision operation. It utilizes a rotating mechanism in conjunction with a heater to achieve uniform flanging temperature while reducing the instability caused by manual heating. Overall, the operation is safer, with an extremely low failure rate and high productivity.

[0034] This invention is applicable to plastic flanging without being limited by the size of steel pipe flanges or to single plastic processing, making it more versatile. In particular, it can overcome the mold costs associated with flanging large diameters, and is convenient and efficient to operate. Attached Figure Description

[0035] Figure 1 This is a top view of the present invention;

[0036] Figure 2 This is the front view of the present invention;

[0037] Figure 3 A diagram showing the completion of the search;

[0038] In the diagram, 1. Fluoroplastic pipe, 2. Flange-type steel pipe, 3. Front rolling roller, 4. Rear rolling roller, 5. Flanged cone roller, 6. Cone roller angle adjustment mechanism, 7. Cone roller adjustment seat, 8. Workbench, 9. Hot air gun. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] like Figure 1-3 As shown, the present invention provides a flange forming machine for inner lining pipes used in anti-corrosion lined pipes, comprising:

[0043] Flange-type steel pipe 2, which is used to insert fluoroplastic pipe 1;

[0044] The work stand 8 has a heating device and a roller cone base on its two sides respectively. The heating device is used to heat the fluoroplastic pipe 1, and the roller cone base is used to install the roller cone angle adjustment mechanism 6 and the flanging roller cone 5.

[0045] The flange-type steel pipe 2 is placed on the work stand 8 and can rotate on the work stand 8. The rotation of the flange-type steel pipe 2 can be driven by the drive device on the work stand 8.

[0046] The roller cone base is provided with a roller cone angle adjustment mechanism 6 for adjusting the angle of the flanging roller cone 5, and the flanging roller cone 5 is disposed on the roller cone angle adjustment mechanism 6.

[0047] In this invention, the roller cone base is a roller cone adjustment seat 7, which is used to adjust the height of the flanged roller cone 5.

[0048] In this invention, the roller cone angle adjustment mechanism 6 includes a drive device and an arc-shaped groove. The flanging roller cone 5 is initially fixed at a zero-angle position on the roller cone angle adjustment mechanism 6. The drive device on the roller cone angle adjustment mechanism 6 is preferably equipped with a motor, gears, and a bevel gear rack, which can control and adjust the angle of the flanging roller cone 5 during flanging operations. The roller cone angle adjustment mechanism 6 is preferably a high-strength flat steel plate, welded with a flat steel plate having a machined arc-shaped groove, and also welded with a machined sleeve, forming a component with both strength and machinability. A groove is machined on one end of the flat steel plate, and a through-hole positioning pin is machined on the side, used to connect with the hole machined at the front end of the central shaft of the flanging roller cone 5 to form a hinged positioning center. The flanging roller cone 5 utilizes this movable hinged origin combined with the arc-shaped groove to form the angle adjustment function. The machined sleeve of the welded component precisely fits with the cylinder of the roller cone adjustment seat 7, forming a roller cone adjustment mechanism 6 that is both height-adjustable and rigid.

[0049] The driving device drives the end of the flanging roller cone 5 away from the fluoroplastic pipe 1 to move along the arc-shaped groove.

[0050] In this invention, the roller cone base is slidably connected to the work stand 8.

[0051] In this invention, the workbench 8 is provided with a front rolling wheel 3 and a rear rolling wheel 4;

[0052] The flange-shaped steel pipe 2 is positioned in the groove formed by the front rolling wheel 3 and the rear rolling wheel 4, and rotates under the drive of the front rolling wheel 3 and the rear rolling wheel 4. Preferably, the front rolling wheel 3 and the rear rolling wheel 4 are driven to rotate by the driving device on the workbench 8, thereby driving the flange-shaped steel pipe 2 to rotate.

[0053] In this invention, the heating device is a hot air gun 9.

[0054] The functions, roles, and working processes of each component in this invention are described in detail below:

[0055] Work process:

[0056] First, insert the fluoroplastic pipe 1 into the flanged steel pipe 2 to form a workpiece, leaving straight sections of the pipe at both ends that need to be flanged, thus completing the workpiece to be flanged.

[0057] The workpiece is lifted onto the workbench 8. The workbench 8 is equipped with a front rolling wheel 3 and a rear rolling wheel 4 that are controlled to rotate by a motor. Both the front rolling wheel 3 and the rear rolling wheel 4 have grooves for fixing and positioning the workpiece. The motor controls the rotation of the front rolling wheel 3 and the rear rolling wheel 4, thereby driving the workpiece to rotate.

[0058] The flange on the workpiece must be placed into the grooves of the front roller 3 and the rear roller 4 to complete the positioning. When the front roller 3 and the rear roller 4 are started to rotate, the workpiece rotates 360 degrees simultaneously.

[0059] Once the workpiece is positioned, the height of the flanging roller cone 5 is adjusted to the center horizontal position of the workpiece using the roller cone adjustment seat 7. The roller cone adjustment seat 7 is a component connected to the work stand 8 via a slide table. Axial positioning movement is performed by an electric control machine. The above adjustment must be made to achieve the initial flanging position of the flanging roller cone 5.

[0060] The flanging roller cone 5 is initially located at the zero angle position on the roller cone angle adjustment mechanism 6. The roller cone angle adjustment mechanism 6 is equipped with a motor, gears, and bevel gear racks to control and adjust the angle of the flanging roller cone 5 during the flanging operation.

[0061] A hot air gun 9 is then set up at the other end of the work stand 8. After adjusting the angle of the hot air gun 9, all the preparatory work for flanging is completed.

[0062] The workpiece is started to rotate slowly, and the hot air gun 9 is turned on to heat it until the fluoroplastic pipe 1 reaches the temperature for plasticizing and flanging. After the fluoroplastic pipe 1 reaches the temperature for plasticizing and flanging, the flanging roller cone 5 has initially contacted the inner wall of the fluoroplastic pipe 1 to form a flared flanging trumpet shape. The angle of the flanging roller cone 5 on the roller cone angle adjustment mechanism 6 is continuously adjusted. The roller surface of the flanging roller cone 5 on the roller cone angle adjustment mechanism 6 gradually becomes parallel to the flange surface of the flange-type steel pipe 2. Finally, the finished product flanging of the inner lining pipe forming machine of the present invention for anti-corrosion lined pipes is achieved.

[0063] The working principle of this invention will be explained below with reference to specific examples:

[0064] Taking the plastic flange of a 24-inch flange-type fluoroplastic lined pipe as an example,

[0065] First, insert the fluoroplastic pipe 1 into the flanged steel pipe 2 (to form the workpiece), leaving straight sections of the pipe at both ends for the flanges to be formed, thus completing the workpiece to be flanged.

[0066] The workpiece is lifted onto the workbench 8. The workbench 8 is equipped with a front rolling wheel 3 and a rear rolling wheel 4 that are controlled to rotate by a motor. Both the front rolling wheel 3 and the rear rolling wheel 4 have grooves for fixing and positioning the workpiece. The motor controls the rotation of the front rolling wheel 3 and the rear rolling wheel 4, thereby driving the workpiece to rotate.

[0067] The front roller 3 and the rear roller 4 are adjustable and grooved driven elements; the flange on the workpiece must be placed into the grooves of the front roller 3 and the rear roller 4 to complete the positioning.

[0068] After the workpiece is positioned as described above, the height of the flanging roller cone 5 is adjusted to the horizontal position of the center of the workpiece using the roller cone adjusting seat 7.

[0069] Adjust the slide of the roller cone adjustment seat 7 on the work stand 8 so that the angle surface of the flanging roller cone 5 is in slight contact with the inner wall of the fluoroplastic pipe 1. This is the initial position of the flanging.

[0070] The flanging roller cone 5 is initially located at the zero angle position on the roller cone angle adjustment mechanism 6. The roller cone angle adjustment mechanism 6 is equipped with a motor, gears, and bevel gear racks to control and adjust the roller cone angle during the flanging operation.

[0071] A hot air gun 9 is then set up at the other end of the work stand 8. After adjusting the angle of the hot air gun 9, all the preparatory work for the flanging is completed.

[0072] Start by slowly rotating the workpiece at 3 rpm, turn on the hot air gun 9 and set it to 450℃ for heating. After about 30 minutes, until the fluoroplastic pipe 1 reaches the temperature for plasticizing and flanging, measure the surface temperature of the pipe. It must be within the range of 270-290℃, which is the ideal continuous working temperature.

[0073] After the fluoroplastic pipe 1 reaches the temperature for plasticizing and flanging, the flanging roller cone 5 initially contacts the inner wall of the pipe to form a flared, trumpet-shaped flange. The angle of the flanging roller cone 5 on the roller cone angle adjustment mechanism 6 is continuously adjusted at approximately 10 degrees per minute. The roller surface of the flanging roller cone 5 gradually becomes parallel to the flange surface. The optimal flanging speed for overall quality is controlled at approximately 5-7 minutes. This process ultimately produces the finished product flanged by the flanging forming machine for anti-corrosion lined pipes, as illustrated in the schematic diagram below. Figure 2 As shown.

[0074] The above are merely preferred embodiments of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A flange forming machine for inner lining pipes used in anti-corrosion lined pipes, characterized in that, include: Flange-type steel pipes are used to insert fluoroplastic pipes; The workbench is equipped with heating devices and roller cone bases on both sides; The flange-shaped steel pipe is placed on the workbench and can rotate on the workbench; The roller cone base is provided with a roller cone angle adjustment mechanism for adjusting the angle of the flanging roller cone, and the flanging roller cone is disposed on the roller cone angle adjustment mechanism; The roller cone base is a roller cone adjustment seat, which is used to adjust the height of the flanged roller cone; The workbench is equipped with front and rear rollers; The flange-shaped steel pipe is positioned within the groove formed by the front and rear rolling wheels and rotates under the drive of the front and rear rolling wheels.

2. The inner lining pipe flanging forming machine for anti-corrosion lined pipes according to claim 1, characterized in that, The roller cone angle adjustment mechanism includes a drive device and an arc groove; The driving device drives the end of the flanging roller cone away from the fluoroplastic pipe to move along the arc-shaped groove.

3. The inner lining pipe flanging forming machine for anti-corrosion lined pipes according to claim 1, characterized in that, The roller cone base is slidably connected to the workbench.

4. The flange forming machine for inner lining pipes for corrosion-resistant lined pipes according to any one of claims 1-3, characterized in that, The heating device is a hot air gun.

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