Plastic pipe forming die

Abstract

The utility model relates to the technical field of plastic pipe machining tools, in particular to a plastic pipe forming die which comprises a die body, the die body comprises an outer shell and an inner core, a plastic pipe forming cavity is formed inside the outer shell and outside the inner core, and the outer shell and the inner core are connected through a connecting bridge. The plastic pipe forming die is mounted on a plastic pipe forming machine, and plastic liquid in a molten state circulates in the forming cavity from back to front and forms a plastic pipe in front of the die body; the shell is provided with a plurality of uniformly distributed steel wire input holes, the shell is also provided with a plurality of steel wire conveying rollers, the conveying rollers are connected with a motor, and the motor can drive the conveying rollers to operate. The plastic pipe forming die has the advantages that the steel wire can be arranged in the formed plastic pipe, and certain production requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of plastic pipe processing tooling technology, specifically to plastic pipe forming molds. Background Technology

[0002] The plastic pipe forming mold includes a mold body, which includes an outer shell and an inner core. The outer shell and the inner core form a forming cavity for the plastic pipe. The outer shell and the inner core are connected by a connecting bridge. In use, the plastic pipe forming mold is installed on a plastic pipe forming machine. Molten plastic flows from back to front in the forming cavity and is formed into a plastic pipe in front of the mold body.

[0003] This plastic pipe forming mold is disclosed in the patent document with publication number "CN206870330U" and title "A Plastic Pipe Forming Mold".

[0004] In existing technologies and comparative documents, the plastic pipe forming molds do not have components for laying steel wires, so it is impossible to lay steel wires in the formed plastic pipes, which cannot meet the requirements of some customers. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned shortcomings by providing a plastic pipe forming mold that allows the formed plastic pipe to have steel wires inside, thus meeting certain production requirements.

[0006] The technical solution of this utility model is implemented as follows: a plastic pipe forming mold includes a mold body, the mold body including an outer shell and an inner core, the outer shell and the inner core being a forming cavity for the plastic pipe, the outer shell and the inner core being connected by a connecting bridge, in use, this plastic pipe forming mold is installed on a plastic pipe forming machine, the molten plastic liquid flows from back to front in the forming cavity and is formed into a plastic pipe in front of the mold body; its characteristic is that: the outer shell has multiple evenly distributed steel wire input holes, and the outer shell also has multiple steel wire conveying rollers, the conveying rollers being connected to a motor, the motor being able to drive the conveying rollers to rotate.

[0007] Furthermore, the outer shell has multiple spherical grooves for mounting spherical heads, and the spherical heads are mounted in the spherical grooves. The input hole is located on the spherical head, and the spherical head has an adjustment handle. By moving the adjustment handle, the angle of the input hole toward the molding cavity can be adjusted.

[0008] Furthermore, there is an expansion groove at the input hole, which contains a nut and a plug. The plug has external threads and a plug hole, which is part of the input hole.

[0009] The beneficial effects of this utility model are: such a plastic pipe forming mold has the advantage of being able to form a plastic pipe with steel wire inside, which meets some production requirements. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 yes Figure 1 A schematic diagram of the structure along the A-A direction.

[0012] Figure 3 yes Figure 1 Enlarged structural diagram of part B in the middle.

[0013] The components include: 1. Mold body; 11. Outer shell; 12. Inner core; 121. Wire landing point; 122. Arc-shaped protrusion; 13. Forming cavity; 14. Connecting bridge; 2. Input hole; 12. Rubber tube; 3. Conveying roller; 4. Motor; 5. Spherical groove; 6. Spherical head; 61. Adjusting handle; 7. Plug; 8. Extending groove; 9. Nut. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] like Figure 1 , 2 As shown in Figure 3, a plastic pipe forming mold includes a mold body 1, which includes an outer shell 11 and an inner core 12. The outer shell and the inner core form a forming cavity 13 for the plastic pipe. The outer shell and the inner core are connected by a connecting bridge 14. In use, the plastic pipe forming mold is installed on a plastic pipe forming machine. Molten plastic flows from back to front in the forming cavity and forms a plastic pipe in front of the mold body. Its characteristic is that the outer shell has multiple evenly distributed steel wire input holes 2, and the outer shell also has multiple steel wire conveying rollers 3. The conveying rollers are connected to a motor 4, and the motor can drive the conveying rollers to rotate.

[0016] This invention is designed so that, during use, a conveying roller feeds steel wire into the input hole, thus forming a plastic tube containing the steel wire, achieving the purpose of this invention. The electric motor drives the conveying roller to ensure the power for the steel wire to enter the forming cavity. During use, molten plastic liquid may discharge from the input hole, but this does not affect the use of the product.

[0017] Preferably, the input hole has a structure that matches the cross-section of the steel wire, thus ensuring the tightness of the injection molding. Preferably, a rubber tube 21 is provided around the input hole, and the input hole is formed by the rubber tube. The rubber tube is an elastic rubber tube. When no steel wire passes through, the rubber tube contracts to form an airtight state. In the later stages of production, when the steel wire is used up and no steel wire passes through the rubber tube, the rubber tube makes the input hole form a sealed state, realizing the smooth demolding of the plastic tube. During the next production, the steel wire passes through the rubber tube, allowing the steel wire to pass through smoothly and enter the molding cavity.

[0018] Preferably, the speed at which the conveying roller conveys the steel wire is equal to the speed at which it flows out of the plastic tube. This ensures that the steel wire is neither too long nor too short within the plastic tube and is arranged in a reasonable manner.

[0019] Furthermore, the part of the inner core opposite the input hole is the wire landing point 121, and there is also an arc-shaped protrusion 122 on the inner core in front of the wire landing point.

[0020] With this design, the steel wire runs in the forming cavity and is lifted by the arc-shaped protrusion, so that the steel wire entering the plastic tube is distributed in the middle of the plastic tube, that is, the steel wire is not distributed along the inner wall of the plastic tube.

[0021] Furthermore, the outer casing has multiple spherical grooves 5 for mounting spherical heads, and spherical heads 6 are mounted in the spherical grooves. The input port is located on the spherical head, and the spherical head has an adjusting handle 61. Moving the adjusting handle... Figure 1 The direction of the middle arrow F is the direction to move the adjustment handle, which can adjust the angle of the input hole towards the molding cavity.

[0022] This invention is designed to adjust the depth of the steel wire inserted into the plastic tube. For example, if the steel wire is shallow in the plastic tube, the handle can be turned to the right to make the steel wire deeper in the plastic tube.

[0023] Furthermore, there is an expansion groove 8 at the input hole, and a nut 9 is located inside the expansion groove. It also includes a plug 7, which has external threads and a plug hole, which is part of the input hole.

[0024] This invention is designed so that plugs with different inlet hole diameters can be used as needed to adjust the diameter of the inlet and reduce the amount of molten plastic liquid discharged from the inlet hole.

[0025] In the description of the embodiments of this utility model, it should be noted that the orientations or positional relationships indicated by terms such as "up," "down," "horizontal," "left," and "right" are based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships commonly used when the product is in use. These are merely for the convenience of describing the 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 the invention. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A plastic pipe forming die comprising a die body, said die body comprising an outer shell and an inner core, said outer shell inside and said inner core outside being a forming cavity of a plastic pipe, said outer shell and said inner core being connected by a connecting bridge, in use, said plastic pipe forming die is installed on a plastic pipe forming machine, a molten plastic liquid flows through said forming cavity from back to front and forms a plastic pipe at the front of said die body; characterized in that: The input hole on the shell has multiple steel wires distributed uniformly, and the shell also has multiple steel wire conveying rollers connected with a motor, which can drive the conveying rollers to rotate; the input hole is matched with the structure of the steel wire section. ​ 2. The plastic pipe forming mold according to claim 1, characterized by: The shell has multiple spherical recesses with spherical heads installed, and the spherical heads are installed in the spherical recesses; the input hole is on the spherical head, and the spherical head has an adjusting handle, which can adjust the angle of the input hole to the forming cavity.

3. The plastic pipe forming mold according to claim 1 or 2, characterized in that in The input hole also has an expansion recess, which has a nut inside; the expansion recess also includes a plug, which has external threads; the plug has a plug hole, which is part of the input hole.

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