Novel mouth mold for preforming machine

Abstract

The utility model discloses a novel die for a preforming machine, and relates to the field of rubber raw material production, the die is of a cylindrical structure, one end of the die is closed to form a closed surface, the other end of the die forms a conical feed port, the closed surface of the die is provided with a first die orifice, and the die is divided into an outer die and a core die by the first die orifice; the core mold is fixedly connected with the inner wall of the outer mold through an arc-shaped column, a second mold opening is formed in the core mold, and a first mold opening check block and a second mold opening check block are connected to the first mold opening and the second mold opening in a clamped mode; according to the extrusion die, the overall strength of the die is guaranteed, meanwhile, the two mouth dies are installed through the corresponding bosses, the capacity of producing two preforms through one die is achieved, the capacity of extruding different preforms can be achieved through the minimum loss, meanwhile, inconvenience caused by die replacement and stock bin and mouth die cleaning is avoided, and the production efficiency is improved. And the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of rubber raw material production, specifically to a novel die for a preforming machine. Background Technology

[0002] The rubber industry is one of the important basic industries of the national economy. It not only provides people with essential daily-use and medical light industrial rubber products, but also provides various rubber production equipment or rubber parts to heavy industries and emerging industries such as mining, transportation, construction, machinery, and electronics. It can be seen that the rubber industry has a wide variety of products and a very broad downstream industry.

[0003] To improve production efficiency, rubber products need to be extruded into a predetermined shape by a preforming machine before vulcanization. Currently, the mainstream extrusion dies are designed to extrude one shape within one die. If the shape needs to be changed, the hopper and die must be cleaned and a new die must be replaced. However, replacing the die is time-consuming and labor-intensive. At the same time, when replacing the die, a large amount of unextruded raw material remains in the cavity of the old die, which is troublesome to clean and can easily cause material contamination and waste. This process is cumbersome and labor-intensive, which greatly affects the production process. Utility Model Content

[0004] The purpose of this invention is to provide a novel die for a preforming machine, which aims to solve the problems of inconvenient die replacement and reduced production efficiency in the aforementioned background technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a novel die for a preforming machine, the die having a cylindrical structure, one end of the die being closed to form a closed surface, and the other end forming a conical feed inlet, a first die opening being provided on the closed surface of the die, the first die opening dividing the die into an outer die and a core die, the core die being fixedly connected to the inner wall of the outer die by an arc-shaped column, a second die opening being provided on the core die, and a first die opening stop block and a second die opening stop block being engaged at the first die opening and the second die opening.

[0006] Furthermore, the first mold opening is a closed petal-shaped structure, the second mold opening is a rectangular structure, and the first mold opening, the second mold opening, and the closed surface are concentrically arranged.

[0007] Furthermore, the first mold opening and the second mold opening are provided with a locking slot, and both the first mold opening stop block and the second mold opening stop block are provided with a boss, which is respectively locked into the locking slot and fixed by bolts.

[0008] This utility model has the following beneficial effects:

[0009] This invention provides a novel die for a preforming machine. While ensuring the overall strength of the die, the two dies, through the installation of corresponding bosses, enable the production of two types of preforms with a single die. It can achieve the extrusion of different preforms with minimal wear, while avoiding the inconvenience of changing the die and cleaning the hopper and die. Production efficiency is improved, and the smooth inner wall helps to reduce the friction between the material and the die, avoiding material accumulation and making the extrusion process smoother. Attached Figure Description

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

[0011] Figure 2 This is a side view of the structure of this utility model;

[0012] In the diagram: 1. Outer mold; 2. Core mold; 3. First mold opening; 4. Second mold opening; 5. Arc-shaped column; 6. First mold opening stop block; 7. Second mold opening stop block. Detailed Implementation

[0013] like Figures 1 to 2 As shown, a novel die for a preforming machine is presented. The die has a cylindrical structure and is integrally machined from 45# steel with a length of 47.5mm and a diameter of 90mm. The overall thickness of the extrusion opening is 7mm. One end of the die is closed to form a closed surface with a diameter of 80mm, and the other end forms a conical feed inlet. A first die opening 3 is provided on the closed surface of the die, which divides the mold into an outer mold 1 and a core mold 2. The core mold 2 is fixedly connected to the inner wall of the outer mold 1 by an arc-shaped column 5. A second die opening 4 is provided on the core mold 2, with a size of 30*6mm. A first die opening stop 6 and a second die opening stop 7 are engaged at the first die opening 3 and the second die opening 4. Four arc-shaped columns 5 are provided to fix the core mold 2, ensuring the extrusion size of the first die opening 3. The hollow cavity inside the die has an isosceles trapezoidal cross-section with a top edge of 80mm, a height of 47.5mm, and a base angle of 86°.

[0014] The first mold opening 3 is a closed petal-shaped structure, and the second mold opening 4 is a rectangular structure. The first mold opening 3, the second mold opening 4, and the closed surface are concentrically arranged. The outer edge of the first mold opening 3 is composed of five circles with a radius of 14mm. The centers of the five circles can be connected to form a regular pentagon with a side length of 28mm. The mold opening width is 3mm. When the first mold opening 3 is not in use, a boss corresponding to the mold opening is inserted into the mold opening. At the same time, the screws set on the edge of the boss are tightened to fix and lock the boss to close the mold opening.

[0015] The first mold opening 3 and the second mold opening 4 are provided with a locking slot. The first mold opening stop block 6 and the second mold opening stop block 7 are both provided with a boss. The bosses are respectively locked in the locking slot and fixed with bolts. When the second mold opening 4 is not in use, the boss corresponding to the locking slot at the mold opening is used to insert into the mold opening to close the mold opening. At the same time, the screws are tightened to lock the boss.

[0016] A step is provided on the outer ring of the other end of the die to fix the entire die on the preforming machine and stably extrude the die-shaped material.

[0017] The specific operation process of this utility model is as follows:

[0018] During operation, the mold is installed on the preforming machine. After the mold is closed, the equipment is operated normally according to the regulations. When it is necessary to change the shape of the extruded part, the opening of the mold at different positions is controlled by switching the first mold opening block 6 and the second mold opening block 7.

Claims

1. A novel die for use in a preform machine characterized by: The die has a cylindrical structure. One end of the die is closed to form a closed surface, and the other end forms a conical feed port. A first die opening (3) is provided on the closed surface of the die. The first die opening (3) divides the die into an outer die (1) and a core die (2). The core die (2) is fixedly connected to the inner wall of the outer die (1) through an arc-shaped column (5). A second die opening (4) is provided on the core die (2). A first die opening stop block (6) and a second die opening stop block (7) are engaged at the first die opening (3) and the second die opening (4).

2. The die of claim 1, wherein The first mold opening (3) is a closed petal-shaped structure, and the second mold opening (4) is a rectangular structure. The first mold opening (3), the second mold opening (4), and the closed surface are concentrically arranged.

3. The die of claim 1 wherein, The first mold opening (3) and the second mold opening (4) are provided with slots. The first mold opening stop block (6) and the second mold opening stop block (7) are both provided with bosses. The bosses are respectively engaged in the slots and fixed with bolts.

Images