Polyethylene pipe forming die

Abstract

The utility model provides a polyethylene pipe forming die which comprises a first die assembly, a second die assembly, an extrusion forming assembly and a movable block, the first die assembly and the second die assembly are detachably connected through a bolt, the extrusion forming assembly is arranged between the first die assembly and the second die assembly, and the movable block is arranged between the first die assembly and the second die assembly. The movable block is arranged in the first mold assembly and the second mold assembly and is connected with the extrusion forming assembly; a cavity used for pipe forming is formed between the first mold assembly and the second mold assembly. Different movable blocks can be replaced according to different diameters of manufactured pipes, the diameters of the fifth semicircular grooves and the sixth semicircular grooves of the different movable blocks are different, so that the pipe forming mold can be suitable for pipes of various specifications, when the pipes of different specifications need to be manufactured, only the movable blocks need to be replaced, the whole pipe forming mold does not need to be replaced, and the production cost is reduced. The pipe forming die is higher in adaptability, the working efficiency can be improved, and the cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of plastic pipe processing, especially relates to a polyethylene pipe forming die. BACKGROUND

[0002] The plastic pipe develops rapidly in China, and the quality is continuously improved. The polyethylene PE pipe is widely applied in building water supply, building drainage, buried drainage pipe, building heating, gas pipe, electrician and telecommunication protection sleeve pipe, industrial pipe and agricultural pipe due to its unique advantages. The polyethylene PE pipe is mainly applied in urban water supply, urban gas supply and farmland irrigation.

[0003] The polyethylene pipe has many specifications and various pressure grades, and each pipe specification and pressure grade corresponds to a corresponding extrusion die (die and core rod). When producing an order of one specification and then producing an order of another specification, workers need to disassemble and reassemble the corresponding die, and the whole die needs to be replaced. This not only wastes time, but also greatly reduces the production capacity. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a polyethylene pipe forming die to solve the problem that the pipe forming die in the prior art can only be applied to the same specification pipe, different dies need to be replaced when producing pipes of different specifications, resulting in high cost and low production capacity.

[0005] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0006] A polyethylene pipe forming die, comprising a first die assembly, a second die assembly, an extrusion forming assembly and a movable block, the first die assembly and the second die assembly are detachably connected through bolts, the extrusion forming assembly is arranged between the first die assembly and the second die assembly, the movable block is arranged inside the first die assembly and the second die assembly, and the movable block is connected with the extrusion forming assembly;

[0007] A cavity for pipe forming is arranged between the first die assembly and the second die assembly;

[0008] The first die assembly comprises a first template and a first shell plate, the first template is arranged on one side of the first shell plate, and the side of the first template away from the first shell plate is provided with a first forming groove corresponding to the pipe;

[0009] The second die assembly comprises a second template and a second shell plate, the second template is arranged on one side of the second shell plate, and the side of the second template away from the second shell plate is provided with a second forming groove corresponding to the pipe.

[0010] Further, the first shell plate, the first mold plate, the second mold plate and the second shell plate are sequentially arranged, and the first mold plate and the second mold plate are detachably connected through bolts.

[0011] Further, the first forming groove comprises a first semicircular groove and a second semicircular groove, the first semicircular groove is horizontally arranged on the first mold plate, and the second semicircular groove is vertically arranged below the middle part of the first semicircular groove and communicates with the first semicircular groove.

[0012] Further, the second forming groove comprises a third semicircular groove and a fourth semicircular groove, the third semicircular groove is horizontally arranged on the second mold plate, and the fourth semicircular groove is vertically arranged below the middle part of the third semicircular groove and communicates with the third semicircular groove.

[0013] Further, the movable block comprises a first movable block and a second movable block, the first movable block and the second movable block are the same in structure, the first movable block and the second movable block are oppositely arranged, the first movable block is arranged in the second semicircular groove, the second movable block is arranged in the fourth semicircular groove, a fifth semicircular groove is arranged on the side of the first movable block away from the second semicircular groove, and a sixth semicircular groove is arranged on the side of the second movable block away from the fourth semicircular groove.

[0014] Further, the first semicircular groove and the third semicircular groove form a first cavity corresponding to the pipe, and the fifth semicircular groove and the sixth semicircular groove form a second cavity corresponding to the pipe, and the first cavity and the second cavity are internally communicated.

[0015] Further, the extrusion forming assembly comprises a first extrusion assembly, a second extrusion assembly and a third extrusion assembly, the first extrusion assembly, the second extrusion assembly and the third extrusion assembly are all arranged between the first mold plate and the second mold plate, the first extrusion assembly is arranged at one end of the first cavity, the second extrusion assembly is arranged at the other end of the first cavity, and the third extrusion assembly is arranged at one end of the second cavity away from the first cavity.

[0016] Further, the first extrusion assembly comprises a first air cylinder and a first rectangular frame, the first air cylinder is arranged on one side of the first cavity through the first rectangular frame, the mounting end of the first air cylinder is arranged on the side of the first rectangular frame away from the first cavity, and the piston of the first air cylinder extends into the first cavity.

[0017] The second extrusion assembly comprises a second cylinder and a second rectangular frame, the second cylinder is arranged on the other side of the first cavity through the second rectangular frame, the mounting end of the second cylinder is arranged on the side of the second rectangular frame away from the first cavity, and the piston of the second cylinder extends into the first cavity;

[0018] The third extrusion assembly comprises a third cylinder and a third rectangular frame, the third cylinder is arranged on one side of the second cavity through the third rectangular frame, the mounting end of the third cylinder is arranged on the side of the third rectangular frame away from the movable block, and the piston of the third cylinder extends into the second cavity.

[0019] Further, the first forming column is arranged at the piston end of the first cylinder, the second forming column is arranged at the piston end of the second cylinder, and the third forming column is arranged at the piston end of the third cylinder.

[0020] The first forming column is arranged in one end of the first cavity through the first cylinder, the second forming column is arranged in the other end of the first cavity through the second cylinder, and the third forming column is arranged in the second cavity through the third cylinder, so that the inner hole of the pipe is manufactured, and the difference between the first forming column, the second forming column and the inner diameter of the first cavity and the difference between the third forming column and the inner diameter of the second cavity are the wall thickness of the pipe.

[0021] Further, the first mold plate and the first shell plate are provided with injection holes, the injection holes are in communication with the first cavity and the second cavity, and materials are injected into the first cavity and the second cavity through the injection holes, so that the tee pipe with the required specification is formed.

[0022] Compared with the prior art, the polyethylene pipe forming die has the following advantages:

[0023] (1) The first mold plate and the second mold plate are connected through bolt fastening, after fastening, the first forming groove on the first mold plate and the second forming groove on the second mold plate form a cavity, the cavity corresponds to the shape of the pipe to be manufactured, the mold plate is convenient to disassemble, and the working efficiency can be improved.

[0024] (2) According to the diameter of the pipe to be manufactured, different movable blocks can be replaced, the diameters of the fifth semicircular groove and the sixth semicircular groove of different movable blocks are different, so that the pipe forming die can be applied to pipes of various specifications, when pipes of different specifications are needed, only the movable block needs to be replaced, the entire pipe forming die does not need to be replaced, the pipe forming die has higher adaptability, the working efficiency can be improved, and the cost can be saved. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which form a part of this patent, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

[0026] Figure 1 A polyethylene pipe forming die overall schematic view according to an embodiment of the present application;

[0027] Figure 2 A polyethylene pipe forming die main view schematic view according to an embodiment of the present application;

[0028] Figure 3 A polyethylene pipe forming die cross section schematic view according to an embodiment of the present application;

[0029] Figure 4 A second movable block of a polyethylene pipe forming die according to an embodiment of the present application;

[0030] Figure 5 A first mold plate of a polyethylene pipe forming die according to an embodiment of the present application;

[0031] Figure 6 A second mold plate of a polyethylene pipe forming die according to an embodiment of the present application.

[0032] BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 1, pipe; 2, first mold plate; 3, first shell plate; 4, second mold plate; 5, second shell plate; 6, injection hole; 7, second movable block; 8, first air cylinder; 9, first rectangular frame; 10, second air cylinder; 11, second rectangular frame; 12, third air cylinder; 13, third rectangular frame; 14, first forming column; 15, second forming column; 16, third forming column; 17, first semicircular groove; 18, second semicircular groove; 19, third semicircular groove; 20, fourth semicircular groove; 21, sixth semicircular groove. DETAILED DESCRIPTION

[0034] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0035] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model indicated or implied by the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0036] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0037] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0038] As Figures 1 to 6 shown, a polyethylene pipe forming die, including first die assembly, second die assembly, extrusion forming assembly, movable block, the first die assembly and the second die assembly are detachably connected by bolt, extrusion forming assembly is arranged between the first die assembly and the second die assembly, movable block is arranged inside the first die assembly and the second die assembly, and movable block is connected with extrusion forming assembly;

[0039] A cavity for pipe 1 forming is arranged between the first die assembly and the second die assembly.

[0040] The first die assembly includes first template 2, first shell plate 3, first template 2 is arranged on the side of first shell plate 3, and the side, away from first shell plate 3, of first template 2 is provided with first forming groove corresponding to pipe 1.

[0041] The second die assembly includes second template 4, second shell plate 5, second template 4 is arranged on the side of second shell plate 5, and the side, away from second shell plate 5, of second template 4 is provided with second forming groove corresponding to pipe 1.

[0042] The first shell plate 3, the first template 2, the second template 4 and the second shell plate 5 are sequentially arranged, and the first template 2 and the second template 4 are detachably connected through bolts.

[0043] The first forming groove comprises a first semicircular groove 17 and a second semicircular groove 18, the first semicircular groove 17 is horizontally arranged on the first template 2, the second semicircular groove 18 is vertically arranged below the middle part of the first semicircular groove 17, and the second semicircular groove 18 is in communication with the first semicircular groove 17.

[0044] The second forming groove comprises a third semicircular groove 19 and a fourth semicircular groove 20, the third semicircular groove 19 is horizontally arranged on the second template 4, the fourth semicircular groove 20 is vertically arranged below the middle part of the third semicircular groove 19, and the fourth semicircular groove 20 is in communication with the third semicircular groove 19.

[0045] The movable block comprises a first movable block and a second movable block 7, the first movable block and the second movable block 7 are of the same structure, the first movable block and the second movable block 7 are oppositely arranged, the first movable block is arranged in the second semicircular groove 18, the second movable block 7 is arranged in the fourth semicircular groove 20, a fifth semicircular groove is arranged on the side of the first movable block away from the second semicircular groove 18, and a sixth semicircular groove 21 is arranged on the side of the second movable block 7 away from the fourth semicircular groove 20.

[0046] The first semicircular groove 17 and the third semicircular groove 19 form a first cavity corresponding to the pipe 1, and the fifth semicircular groove and the sixth semicircular groove 21 form a second cavity corresponding to the pipe 1, and the first cavity and the second cavity are in communication.

[0047] The extrusion forming assembly comprises a first extrusion assembly, a second extrusion assembly and a third extrusion assembly, the first extrusion assembly, the second extrusion assembly and the third extrusion assembly are arranged between the first template 2 and the second template 4, the first extrusion assembly is arranged at one end of the first cavity, the second extrusion assembly is arranged at the other end of the first cavity, and the third extrusion assembly is arranged at one end of the second cavity away from the first cavity.

[0048] The first extrusion assembly comprises a first cylinder 8 and a first rectangular frame 9, the first cylinder 8 is arranged at one side of the first cavity through the first rectangular frame 9, the mounting end of the first cylinder 8 is arranged at the side of the first rectangular frame 9 away from the first cavity, and the piston of the first cylinder 8 extends into the first cavity;

[0049] The second extrusion assembly comprises a second cylinder 10 and a second rectangular frame 11, the second cylinder 10 is arranged at the other side of the first cavity through the second rectangular frame 11, the mounting end of the second cylinder 10 is arranged at the side of the second rectangular frame 11 away from the first cavity, and the piston of the second cylinder 10 extends into the first cavity;

[0050] The third extrusion assembly comprises a third cylinder 12 and a third rectangular frame 13, the third cylinder 12 is arranged at one side of the second cavity through the third rectangular frame 13, the mounting end of the third cylinder 12 is arranged at the side of the third rectangular frame 13 away from the movable block, and the piston of the third cylinder 12 extends into the second cavity.

[0051] The piston end of the first cylinder 8 is provided with a first forming column 14, the piston end of the second cylinder 10 is provided with a second forming column 15, and the piston end of the third cylinder 12 is provided with a third forming column 16, the outer diameter of the first forming column 14 and the second forming column 15 is smaller than the inner diameter of the first cavity, and the outer diameter of the third forming column 16 is smaller than the inner diameter of the second cavity.

[0052] The first forming column 14 is extended into one end of the first cavity through the first cylinder 8, the second forming column 15 is extended into the other end of the first cavity through the second cylinder 10, and the third forming column 16 is extended into the second cavity through the third cylinder 12, so as to manufacture the inner hole of the pipe fitting, and the difference between the first forming column 14, the second forming column 15 and the inner diameter of the first cavity and the difference between the third forming column 16 and the inner diameter of the second cavity are the wall thickness of the pipe 1.

[0053] The first mold plate 2 and the first shell plate 3 are provided with injection holes 6, the injection holes 6 are in communication with the inside of the first cavity and the second cavity. By injecting materials into the first cavity and the second cavity through the injection holes 6, the required specification of the tee pipe fitting can be formed.

[0054] In a specific implementation, according to the diameter of the pipe 1 required, the movable block corresponding to the inner diameter is selected, the first movable block is installed in the second semicircular groove 18, the second movable block 7 is installed in the fourth semicircular groove 20, the first mold assembly and the second mold assembly are buckled through the bolts, the pipe cavity is formed between the first mold plate 2 and the second mold plate 4, the pistons of the first cylinder 8, the second cylinder 10 and the third cylinder 12 are extended, so that the first forming column 14 and the second forming column 15 are extended into the first cavity, and the third forming column 16 is extended into the second cavity, the material is injected into the first cavity and the second cavity through the injection hole 6, and after cooling, the pipe 1 is formed between the first forming column 14, the second forming column 15, the third forming column 16 and the inner wall of the first cavity and the second cavity; the pistons of the first cylinder 8, the second cylinder 10 and the third cylinder 12 are retracted, the bolts are unscrewed, and the pipe 1 can be taken out from the mold.

[0055] The above merely describes the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A polyethylene pipe forming die characterized by: The utility model provides a pipe extruding device, including first mould component, second mould component, extrusion forming assembly, movable block, first mould component and second mould component are detachable connection through bolt, extrusion forming assembly sets up between first mould component and second mould component, movable block sets up inside first mould component and second mould component, and movable block is connected with extrusion forming assembly, A cavity for pipe (1) forming is arranged between the first mould component and the second mould component; The first mould component comprises a first template (2) and a first shell plate (3), the first template (2) is arranged on one side of the first shell plate (3), and a first forming groove corresponding to the pipe (1) is arranged on the side of the first template (2) away from the first shell plate (3); The second mould component comprises a second template (4) and a second shell plate (5), the second template (4) is arranged on one side of the second shell plate (5), and a second forming groove corresponding to the pipe (1) is arranged on the side of the second template (4) away from the second shell plate (5).

2. A polyethylene pipe forming die according to claim 1, wherein: The first shell plate (3), the first template (2), the second template (4) and the second shell plate (5) are sequentially arranged, and the first template (2) and the second template (4) are detachably connected through bolts.

3. A polyethylene pipe forming die according to claim 1, wherein: The first forming groove comprises a first semicircular groove (17) and a second semicircular groove (18), the first semicircular groove (17) is horizontally arranged on the first template (2), the second semicircular groove (18) is vertically arranged below the middle part of the first semicircular groove (17), and the second semicircular groove (18) is in communication with the first semicircular groove (17).

4. A polyethylene pipe forming die according to claim 1, wherein: The second forming groove comprises a third semicircular groove (19) and a fourth semicircular groove (20), the third semicircular groove (19) is horizontally arranged on the second template (4), the fourth semicircular groove (20) is vertically arranged below the middle part of the third semicircular groove (19), and the fourth semicircular groove (20) is in communication with the third semicircular groove (19).

5. A polyethylene pipe forming die according to claim 1, wherein: The movable block comprises a first movable block and a second movable block (7), the first movable block and the second movable block (7) are of the same structure, the first movable block and the second movable block (7) are oppositely arranged, the first movable block is arranged in the second semicircular groove (18), the second movable block (7) is arranged in the fourth semicircular groove (20), the side of the first movable block away from the second semicircular groove (18) is provided with a fifth semicircular groove, and the side of the second movable block (7) away from the fourth semicircular groove (20) is provided with a sixth semicircular groove (21).

6. A polyethylene pipe forming die according to claim 3, wherein: The first semicircular groove (17) and the third semicircular groove (19) form a first cavity corresponding to the pipe (1), the fifth semicircular groove and the sixth semicircular groove (21) form a second cavity corresponding to the pipe (1), and the first cavity and the second cavity are in communication.

7. A polyethylene pipe forming die according to claim 1, wherein: The extrusion forming assembly comprises a first extrusion assembly, a second extrusion assembly and a third extrusion assembly, the first extrusion assembly, the second extrusion assembly and the third extrusion assembly are all arranged between the first template (2) and the second template (4), the first extrusion assembly is arranged at one end of the first cavity, the second extrusion assembly is arranged at the other end of the first cavity, and the third extrusion assembly is arranged at one end of the second cavity away from the first cavity.

8. A polyethylene pipe forming die according to claim 7, wherein: The first extrusion assembly comprises a first cylinder (8) and a first rectangular frame (9), the first cylinder (8) is arranged on one side of the first cavity through the first rectangular frame (9), the mounting end of the first cylinder (8) is arranged on the side of the first rectangular frame (9) away from the first cavity, and the piston of the first cylinder (8) extends into the first cavity; The second extrusion assembly comprises a second cylinder (10) and a second rectangular frame (11), the second cylinder (10) is arranged on the other side of the first cavity through the second rectangular frame (11), the mounting end of the second cylinder (10) is arranged on the side of the second rectangular frame (11) away from the first cavity, and the piston of the second cylinder (10) extends into the first cavity; The third extrusion assembly comprises a third cylinder (12) and a third rectangular frame (13), the third cylinder (12) is arranged on one side of the second cavity through the third rectangular frame (13), the mounting end of the third cylinder (12) is arranged on the side of the third rectangular frame (13) away from the movable block, and the piston of the third cylinder (12) extends into the second cavity.

9. A polyethylene pipe forming die according to claim 8, wherein: The piston end of the first cylinder (8) is provided with a first forming column (14), the piston end of the second cylinder (10) is provided with a second forming column (15), and the piston end of the third cylinder (12) is provided with a third forming column (16), the outer diameter of the first forming column (14) and the second forming column (15) is smaller than the inner diameter of the first cavity, and the outer diameter of the third forming column (16) is smaller than the inner diameter of the second cavity.

10. A polyethylene pipe forming die according to claim 1, wherein: The first mold plate (2) and the first shell plate (3) are provided with injection holes (6), and the injection holes (6) are in communication with the interiors of the first cavity and the second cavity.

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