An extrusion molding equipment for PVC pipe production

Abstract

This utility model discloses an extrusion molding device for PVC pipe production, including a support plate. A support ring and a protective ring are fixedly connected to the upper surface of the support plate. A plastic tube is fixedly installed on the inner wall of the support ring. A hollow cylinder is sleeved on the inner wall of the plastic tube. A plastic cavity is formed between the inner wall of the plastic tube and the outer surface of the hollow cylinder. A positioning and disassembly mechanism is provided on the surface of the hollow cylinder. When producing PVC pipes of different thicknesses, this utility model first releases the threaded rod in the threaded groove from its threaded state, presses the triangular box to make it slide along the inner wall of the clearance groove, compresses the spring telescopic rod to shorten it, and pushes the push-pull plate to remove the hollow cylinder from the plastic tube. After replacing it with a hollow cylinder of a different outer diameter, the hollow cylinder is pushed into the plastic tube for installation and re-fixing. Because the outer diameter and thickness of the hollow cylinder are different, the space of the plastic cavity formed with the inner wall of the plastic tube changes, thus enabling the production of PVC pipes of different thicknesses.

Description

Technical Field

[0001] This utility model relates to the field of plastic pipe production technology, and in particular to an extrusion molding equipment for PVC pipe production. Background Technology

[0002] PVC pipe extrusion molding equipment mainly includes an extruder, die head, shaping and cooling device, printing device, and cutting device. The extruder is the core of the entire equipment. Its working principle is to generate pressure and shear force through the rotation of the screw, so that the material is fully plasticized and uniformly mixed, and then formed through the die.

[0003] Traditional extrusion molding equipment can only produce PVC pipes of the same thickness. If it is necessary to produce PVC pipes of different thicknesses, different production equipment is required, which results in higher costs. To solve the above problems, an extrusion molding equipment for PVC pipe production is needed. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an extrusion molding equipment for PVC pipe production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An extrusion molding device for PVC pipe production includes a support plate, a support ring and a protective ring fixedly connected to the upper surface of the support plate, a plastic tube fixedly installed on the inner wall of the support ring, a hollow cylinder sleeved on the inner wall of the plastic tube, a plastic cavity formed by the inner wall of the plastic tube and the outer surface of the hollow cylinder, and a positioning and disassembly mechanism provided on the surface of the hollow cylinder.

[0007] Preferably, the positioning and disassembly mechanism includes multiple clearance grooves formed on the surface of the hollow cylinder, and multiple spring telescopic rods are fixedly connected to the inner walls of the multiple clearance grooves, with a triangular box fixedly connected to one end of each of the multiple spring telescopic rods.

[0008] Furthermore, the surface of the triangular box is slidably connected to the inner wall of the clearance groove, the inner wall of the triangular box is threadedly connected to a threaded rod, and the surface of the plastic tube is provided with a threaded groove, which is threadedly engaged with the threaded rod.

[0009] Preferably, a sealing ring is fixedly connected to the inner wall of the shaped tube, and the surface of the sealing ring is in extrusion contact with the surface of the hollow cylinder.

[0010] Furthermore, a spiral tube is fixedly connected to the inner wall of the protective ring, and an inlet pipe and a drain pipe are fixedly connected to the inner wall of the spiral tube, with one end of the inlet pipe and the drain pipe penetrating through the outer surface of the protective ring.

[0011] Preferably, an injection tube is fixedly connected to the inner wall of the plastic tube, and a push-pull plate is fixedly connected to the surface of the hollow cylinder.

[0012] The beneficial effects of this utility model are as follows:

[0013] When producing PVC pipes of different thicknesses, first release the threaded rod in the threaded groove from its threaded state, press the triangular box to make it slide along the inner wall of the clearance groove, compress the spring telescopic rod to shorten it, and push the push-pull plate to remove the hollow cylinder inside the plastic tube. After replacing it with a hollow cylinder of a different outer diameter, push the hollow cylinder into the plastic tube for installation and re-fixing. Because the outer diameter and thickness of the hollow cylinder are different, the plastic cavity space formed with the inner wall of the plastic tube changes, thus enabling the production of PVC pipes of different thicknesses. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an extrusion molding equipment for PVC pipe production proposed in this utility model;

[0015] Figure 2 This is a cross-sectional view of the hollow cylinder in an extrusion molding equipment for PVC pipe production proposed in this utility model.

[0016] Figure 3 This utility model proposes an extrusion molding equipment for PVC pipe production. Figure 2 Enlarged structural diagram at point A;

[0017] Figure 4 This is a three-dimensional structural diagram of the hollow cylinder installation in an extrusion molding equipment for PVC pipe production proposed in this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of hollow cylinders of different specifications in an extrusion molding equipment for PVC pipe production proposed in this utility model.

[0019] In the diagram: 1. Support plate; 2. Protective ring; 3. Molding tube; 4. Support ring; 5. Hollow cylinder; 6. Molding cavity; 7. Injection tube; 8. Sealing ring; 9. Spiral tube; 10. Water inlet pipe; 11. Drain pipe; 12. Clearance groove; 13. Spring telescopic rod; 14. Triangular box; 15. Threaded groove; 16. Threaded rod; 17. Push-pull plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-5 An extrusion molding equipment for PVC pipe production includes a support plate 1. A support ring 4 and a protective ring 2 are fixedly connected to the upper surface of the support plate 1. A plastic tube 3 is fixedly installed on the inner wall of the support ring 4. A hollow cylinder 5 is sleeved on the inner wall of the plastic tube 3. A plastic cavity 6 is formed between the inner wall of the plastic tube 3 and the outer surface of the hollow cylinder 5. A positioning and disassembly mechanism is provided on the surface of the hollow cylinder 5.

[0022] By setting a support ring 4, the support tube 3 is fixed and supported. By setting the support tube 3, a plastic cavity 6 is formed with the outer surface of the hollow cylinder 5 for plastic extrusion. By changing the hollow cylinder 5 of different thicknesses, the production needs of PVC pipes of different thicknesses can be met. By setting a positioning and disassembly mechanism, it is convenient to replace hollow cylinders 5 of different diameters.

[0023] In this utility model, reference Figure 3 The positioning and disassembly mechanism includes multiple clearance grooves 12 formed on the surface of the hollow cylinder 5. Multiple spring telescopic rods 13 are fixedly connected to the inner walls of the multiple clearance grooves 12, and a triangular box 14 is fixedly connected to one end of the multiple spring telescopic rods 13.

[0024] By setting the clearance groove 12, multiple spring telescopic rods 13 are provided with installation space. By setting multiple spring telescopic rods 13, the triangular box 14 is driven to reset after the force is released.

[0025] In this utility model, reference Figure 3 The surface of the triangular box 14 is slidably connected to the inner wall of the clearance groove 12. The inner wall of the triangular box 14 is threadedly connected to a threaded rod 16. The surface of the plastic tube 3 is provided with a threaded groove 15, which is threadedly engaged with the threaded rod 16.

[0026] By setting the threaded rod 16, the operator can fix the hollow cylinder 5 on the plastic tube 3 for positioning, ensuring the stability of the hollow cylinder 5 installation.

[0027] In this utility model, reference Figure 2 A sealing ring 8 is fixedly connected to the inner wall of the shaped tube 3, and the surface of the sealing ring 8 is in contact with the surface of the hollow cylinder 5 by compression.

[0028] By setting a sealing ring 8, it is prevented that plastic will overflow through the contact surface between the molding tube 3 and the hollow cylinder 5 during the injection process.

[0029] In this utility model, reference Figure 2 A spiral tube 9 is fixedly connected to the inner wall of the protective ring 2. A water inlet pipe 10 and a drain pipe 11 are fixedly connected to the inner wall of the spiral tube 9. One end of the water inlet pipe 10 and the drain pipe 11 penetrates the outer surface of the protective ring 2.

[0030] The spiral tube 9 is used to store cooling water, the inlet pipe 10 is used to supply water to the spiral tube 9, and the drain pipe 11 is used to discharge the cooling water that has absorbed heat.

[0031] In this utility model, reference Figure 1 and Figure 2 The inner wall of the plastic tube 3 is fixedly connected to the glue injection tube 7, and the surface of the hollow cylinder 5 is fixedly connected to the push-pull plate 17.

[0032] By setting up a glue injection tube 7, high-temperature molten plastic is injected into the plastic tube 3. By setting up a push-pull plate 17, the hollow cylinder 5 can be easily pushed and pulled to be removed from the plastic tube 3 for replacement.

[0033] Working principle: Molten plastic is injected into the molding tube 3 through the injection tube 7, and discharged through the molding cavity 6 to form a PVC pipe. Before discharge, the pipe is cooled and shaped by the spiral tube 9. When it is necessary to produce PVC pipes of different thicknesses, the hollow cylinder 5 inside the molding tube 3 needs to be replaced. At this time, the threaded state of the threaded rod 16 in the threaded groove 15 is unthreaded by external tools, the triangular box 14 is pressed and slid along the inner wall of the clearance groove 12, the compression spring telescopic rod 13 is shortened, and the push-pull plate 17 is pushed to remove the hollow cylinder inside the molding tube 3. 5. After removing and replacing the hollow cylinder 5 with one of different specifications, push the hollow cylinder 5 into the plastic tube 3. During the installation process, the surface of the triangular box 14 contacts the inner wall of the plastic tube 3, causing the compression spring telescopic rod 13 of the triangular box 14 to shorten and avoid collision. After the edge of the triangular box 14 is in contact with the surface of the plastic tube 3 and reset, re-thread the threaded rod 16 and the threaded groove 15. At this time, due to the different outer diameter and thickness of the hollow cylinder 5, the space of the plastic cavity 6 formed with the inner wall of the plastic tube 3 changes, thus enabling the production of PVC pipes of different thicknesses.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A PVC pipe production extrusion molding equipment comprising a support plate (1), characterized in that, The upper surface of the support plate (1) is fixedly connected with a support ring (4) and a protective ring (2). A plastic tube (3) is fixedly installed on the inner wall of the support ring (4). A hollow cylinder (5) is sleeved on the inner wall of the plastic tube (3). A plastic cavity (6) is formed between the inner wall of the plastic tube (3) and the outer surface of the hollow cylinder (5). A positioning and disassembly mechanism is provided on the surface of the hollow cylinder (5).

2. The extrusion molding apparatus for PVC pipe production according to claim 1, characterized in that, The positioning and disassembly mechanism includes multiple clearance grooves (12) formed on the surface of the hollow cylinder (5). Multiple spring telescopic rods (13) are fixedly connected to the inner walls of the multiple clearance grooves (12). A triangular box (14) is fixedly connected to one end of the multiple spring telescopic rods (13).

3. The extrusion molding equipment for PVC pipe production according to claim 2, characterized in that, The surface of the triangular box (14) is slidably connected to the inner wall of the clearance groove (12). The inner wall of the triangular box (14) is threadedly connected to a threaded rod (16). The surface of the plastic tube (3) is provided with a threaded groove (15), and the threaded groove (15) is threadedly engaged with the threaded rod (16).

4. The extrusion molding equipment for PVC pipe production according to claim 1, characterized in that, A sealing ring (8) is fixedly connected to the inner wall of the plastic tube (3), and the surface of the sealing ring (8) is in contact with the surface of the hollow cylinder (5).

5. The extrusion molding equipment for PVC pipe production according to claim 1, characterized in that, The inner wall of the protective ring (2) is fixedly connected to a spiral tube (9), and the inner wall of the spiral tube (9) is fixedly connected to a water inlet pipe (10) and a drain pipe (11). One end of the water inlet pipe (10) and the drain pipe (11) penetrates the outer surface of the protective ring (2).

6. The extrusion molding equipment for PVC pipe production according to claim 1, characterized in that, The inner wall of the plastic tube (3) is fixedly connected to the glue injection tube (7), and the surface of the hollow cylinder (5) is fixedly connected to the push-pull plate (17).

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