A core rod for hose forming

Abstract

The utility model provides a kind of mandrel for hose forming, including center body, the outside of center body is equipped with inner layer body, multiple annular grooves are equipped in the side of inner layer body, the outside of inner layer body is laid with rib net, the outside of rib net is laid with outer layer body.The mandrel for hose forming provided by the utility model can ensure the structural strength of the mandrel, ensure that the mandrel can be efficiently withdrawn from the inside of the hose during the production of the hose, effectively reduce the defective rate during the production of the hose, and improve the service life of the mandrel.

Description

Technical Field

[0001] This utility model relates to the field of hose forming mold technology, specifically to a mandrel for hose forming. Background Technology

[0002] Traditional hose molding typically uses a mandrel as the central forming mold for the hose. The mandrel is formed by extruding plastic onto a steel wire rope, a simple manufacturing process with few steps. After vulcanization, the mandrel is removed by high-pressure water. This process requires very high water pressure combined with pulling out the steel wire rope, extracting hundreds of meters of mandrel from the hose. Due to the extremely high pulling force, the steel wire rope is very likely to separate and detach from the plastic, increasing the product defect rate.

[0003] Therefore, there is an urgent need for a new mandrel for hose forming to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a new mandrel for hose forming, the specific solution of which is as follows: A mandrel for forming hoses includes a central body, an inner layer body on the outside of the central body, a plurality of annular grooves on the side of the inner layer body, a rib mesh on the outside of the inner layer body, and an outer layer body on the outside of the rib mesh.

[0005] Based on the above, the central body is a steel wire rope.

[0006] Based on the above, the reinforcing mesh is woven from metal wires and cotton threads.

[0007] Based on the above, the wire rope is provided with a plurality of protrusions extending outward along its radial direction, and the protrusions and the wire rope are fixed together by welding.

[0008] Based on the above, the inner and outer layers are made of polypropylene or thermoplastic elastomer materials.

[0009] This utility model has substantial features and progress compared to the prior art. Specifically, this utility model has the following advantages: The mandrel for hose forming provided by this utility model has a structural design that ensures the structural strength of the mandrel, guarantees that the mandrel can be efficiently withdrawn from the hose during the hose production process, effectively reduces the defect rate during hose production, and improves the service life of the mandrel. Attached Figure Description

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

[0011] Figure 2 yes Figure 1 Schematic diagram of the structure at point A in the middle.

[0012] In the diagram: 1. Central body; 1-1. Protrusion; 2. Inner body; 3. Rib network; 4. Outer body. Detailed Implementation

[0013] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0014] Example 1 like Figures 1-2 As shown, this utility model provides a mandrel for forming a rubber hose, including a central body 1, an inner layer 2 on the outside of the central body 1, a plurality of annular grooves on the side of the inner layer 2, a reinforcing mesh 3 on the outside of the inner layer 2, and an outer layer 4 on the outside of the reinforcing mesh 3.

[0015] The aforementioned central body 1 is a steel wire rope.

[0016] To facilitate the weaving of the above-mentioned reinforcing mesh 3, the above-mentioned reinforcing mesh 3 is woven from metal wire and cotton thread.

[0017] To further improve the overall structural strength and tensile properties of the mandrel, the aforementioned wire rope is provided with multiple protrusions 1-1 extending radially outward, and the protrusions 1-1 and the wire rope are fixed together by welding.

[0018] The inner layer 2 and outer layer 4 are made of polypropylene or thermoplastic elastomer.

[0019] The mandrel for hose forming provided by this utility model has a structural design that ensures the structural strength of the mandrel, guarantees that the mandrel can be efficiently withdrawn from the hose during the hose production process, effectively reduces the defect rate during hose production, and improves the service life of the mandrel.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A mandrel for forming rubber hoses, characterized in that: It includes a central body (1), an inner body (2) is provided on the outside of the central body (1), a plurality of annular grooves are provided on the side of the inner body (2), a rib mesh (3) is laid on the outside of the inner body (2), and an outer body (4) is laid on the outside of the rib mesh (3).

2. The core rod for tube building according to claim 1, characterized in that: The central body (1) is a steel wire rope.

3. The mandrel for forming hoses according to claim 1, characterized in that: The reinforcing mesh (3) is woven from metal wire and cotton thread.

4. The core rod for tube building according to claim 2, characterized in that: The wire rope is provided with a plurality of protrusions (1-1) extending outward along its radial direction, and the protrusions (1-1) and the wire rope are fixed together by welding.

5. The core rod for tube building according to claim 1, characterized in that: The inner layer (2) and outer layer (4) are made of polypropylene or thermoplastic elastomer.

Images