High-precision silica gel mold core

Abstract

The utility model discloses a high-precision silica gel mould core, which relates to the field of mould cores and comprises a mould core body, the right side of the mould core body is fixedly connected with a base, the center of the inner cavity of the mould core body is fixedly connected with a central pipe, and the left side of the mould core body is fixedly connected with a mould core head. And the outer wall of the mold core body is fixedly connected with a double-end thread. The high-precision silica gel mold core can be applied to preparation of silica gel molds, the overall concentricity is 0.005 degree, the threads with the hole diameter of 1.5 mm are arranged in the mold core body, the overall error is within 0.1 mm, the precision of finished products can be effectively improved during mold manufacturing, the production efficiency of the products can be guaranteed, and the production cost is reduced. And meanwhile, the mold core body of the mold has higher hardness, toughness and wear resistance, so that the overall service life can be ensured, the overall molding precision can be ensured during molding work, and defective products can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of mold cores, in particular to a high-precision silicone mold core. Background Art

[0002] The core, as the name implies, refers to the precision parts used for the key operation of the center part of the mold. The core is generally extremely complex in structure, very difficult to process, and very expensive. The labor cost of manufacturing often greatly exceeds the material itself. The choice of core material is also directly related to the cost of the mold and the service life of the mold. The core includes: drawing core, ceramic core, vacuum core, exhaust core, automotive parts core, etc. The quality of the core material selection is directly related to the service life and price of the mold. From the perspective of the products produced, if the demand for the product is small, the cost of the mold will increase if a good core material is selected, which will increase the cost expenditure for the company and is a waste. If the demand for the product is large, a poor core material is selected, and the production requirements cannot be met, the mold will be scrapped, and the mold needs to be reopened. The production efficiency cannot be improved, which also increases the cost of the mold. If you want to reasonably choose the core material, you must first understand the core materials commonly used in the mold and the characteristics of the core materials. It is very important to use different core materials according to your actual work experience.

[0003] Silica gel, also known as silicic acid gel, is a granular porous silicon dioxide hydrate, an amorphous substance with a transparent or milky white appearance. It is made by washing and drying sodium silicate after adding acid. It is insoluble in water and any solvent, non-toxic and odorless, chemically stable, and non-flammable. Silica gel is a highly active adsorption material with the characteristics of high temperature resistance, stable adhesion, and good durability. It is mainly used as a desiccant, anti-coagulant, anti-caking agent, and adsorbent in column chromatography and thin layer chromatography. Generally speaking, it can be divided into two categories: organic silica gel and inorganic silica gel. Silica gel is widely used in various fields such as aviation, navigation, spacecraft, rockets and missiles, atomic energy, and electronic and electrical industries.

[0004] When making silicone molds, a mold core is required, but the accuracy of the mold core cannot be well controlled, resulting in the quality accuracy of the finished silicone being unable to be guaranteed, and defective products are prone to occur, which will result in a waste of costs.

[0005] Therefore, it is necessary to propose a high-precision silicone mold core to solve the above problems. Utility Model Content

[0006] The main purpose of the utility model is to provide a high-precision silicone mold core, which can effectively solve the problems in the background technology.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A high-precision silicone mold core comprises a mold core body, the right side of the mold core body is fixedly connected to a base, the center of the inner cavity of the mold core body is fixedly connected to a center tube, the left side of the mold core body is fixedly connected to a core head, and the outer wall of the mold core body is fixedly connected to a double-start thread.

[0009] Preferably, the outer wall of the double-start thread is provided with a pitch of 9.00 mm, the overall length of the mold core body is 73.70 mm, and the length of the double-start thread is 69.0 mm.

[0010] Preferably, a small hole is opened in the center of the left side of the mold core head, and an inner hole is opened on the right side of the small hole, and the inner hole is communicated with the inner cavity of the small hole.

[0011] Preferably, the diameter of the small hole is 0.40 mm, the diameter of the left side of the core head is 5.80 mm, and the diameter of the right side of the core head is 7.00 mm.

[0012] Preferably, a guide slope is installed in the inner cavity of the core head, and the small hole is connected to the inner hole through the guide slope. The left side of the inner cavity of the core head is 50°, and the guide slope is 120°.

[0013] Preferably, chamfers are provided on both sides of the left side of the outer wall of the base, the radius of the chamfers is 0.1mm, screw threads are installed in the inner cavity of the center tube, the dimensions of the outer wall of the base are 1.00mm, 1.65mm, 2.70mm and 3.80mm from right to left, respectively, and the base is a cavity structure which is connected to the outside world on the left and right sides. The base is connected to the inner cavity of the center tube, and the left diameter of the base is 2.50mm. Beneficial Effects

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] This high-precision silicone mold core can be used in the preparation of silicone molds. The overall concentricity is 0.005°. The interior of the mold core body is provided with a screw thread with a 1.5mm aperture. The overall error is within 0.1mm. During molding, the accuracy of the finished product can be effectively improved, thereby ensuring the production efficiency of the product. At the same time, the mold core body has high hardness, toughness and wear resistance, which can ensure the overall service life.

[0016] The high-precision silicone mold core can improve the efficiency and accuracy of diversion by setting the diversion slope during diversion, so that the material can flow directly into the inner cavity of the inner hole. During the molding work, the overall molding accuracy can be guaranteed and the generation of defective products can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of the utility model;

[0018] Figure 2 This utility model Figure 1 The enlarged view of point A in the middle;

[0019] Figure 3 It is a schematic diagram of the structure of the double-start thread of the utility model;

[0020] Figure 4 This utility model Figure 1 Enlarged view of point B in the middle.

[0021] In the figure: 1. Mold core body; 2. Base; 3. Double-start thread; 4. Core head; 5. Center tube; 6. Pitch; 7. Small hole; 8. Inner hole; 9. Guide slope. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1-Figure 4 As shown, a high-precision silicone mold core comprises a mold core body 1, a base 2 is fixedly connected to the right side of the mold core body 1, a center tube 5 is fixedly connected to the center of the inner cavity of the mold core body 1, a core head 4 is fixedly connected to the left side of the mold core body 1, a double-headed thread 3 is fixedly connected to the outer wall of the mold core body 1, a pitch 6 is provided on the outer wall of the double-headed thread 3, and the pitch 6 is 9.00 mm. The overall length of the mold core body 1 is 73.70 mm, and the length of the double-headed thread 3 is 69.0 mm. A small hole 7 is provided in the center of the left side of the core head 4, and an inner hole 8 is provided on the right side of the small hole 7. The inner hole 8 communicates with the inner cavity of the small hole 7, and the diameter of the small hole 7 is 0.40 mm The left diameter of the core head 4 is 5.80mm, the right diameter of the core head 4 is 7.00mm, a guide slope 9 is installed in the inner cavity of the core head 4, the small hole 7 is connected to the inner hole 8 through the guide slope 9, the left side of the inner cavity of the core head 4 is 50°, the guide slope 9 is 120°, chamfers are provided on both sides of the left side of the outer wall of the base 2, and the radius of the chamfers is 0.1mm. A screw thread is installed in the inner cavity of the center tube 5. The dimensions of the outer wall of the base 2 are 1.00mm, 1.65mm, 2.70mm and 3.80mm from right to left respectively. The base 2 is a cavity structure communicated with the outside world on the left and right sides. The base 2 is communicated with the inner cavity of the center tube 5, and the left diameter of the base 2 is 2.50mm.

[0024] It can be applied to the preparation of silicone molds, with an overall concentricity of 0.005°. The interior of the mold core body 1 is provided with a screw thread with an aperture of 1.5mm, and the overall error is within 0.1mm. During molding, the accuracy of the finished product can be effectively improved, thereby ensuring the production efficiency of the product. At the same time, the mold core body 1 has high hardness, toughness and wear resistance, which can ensure the overall service life. By setting the guide slope 9, the efficiency and accuracy of the guide can be improved during the guide, so that the material can flow directly into the inner cavity of the inner hole 8. During the molding work, the overall molding accuracy can be guaranteed, and the production of defective products can be reduced.

[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-precision silicone mold core, comprising a mold core body (1), wherein the overall concentricity of the mold core body (1) is 0.005°, a screw thread with a hole diameter of 1.5 mm is arranged inside the mold core body, and the overall error is within 0.1 mm, characterized in that: The right side of the mold core body (1) is fixedly connected to a base (2), the center of the inner cavity of the mold core body (1) is fixedly connected to a center tube (5), the left side of the mold core body (1) is fixedly connected to a core head (4), and the outer wall of the mold core body (1) is fixedly connected to a double-headed thread (3).

2. A high-precision silicone mold core according to claim 1, characterized in that: The outer wall of the double-start thread (3) is provided with a thread pitch (6), the thread pitch (6) is 9.00 mm, the overall length of the mold core body (1) is 73.70 mm, and the length of the double-start thread (3) is 69.0 mm.

3. A high-precision silicone mold core according to claim 1, characterized in that: A small hole (7) is provided in the middle of the left side of the mold core head (4), an inner hole (8) is provided on the right side of the small hole (7), and the inner hole (8) is communicated with the inner cavity of the small hole (7).

4. A high-precision silicone mold core according to claim 3, characterized in that: The diameter of the small hole (7) is 0.40 mm, the diameter of the left side of the mold core head (4) is 5.80 mm, and the diameter of the right side of the mold core head (4) is 7.00 mm.

5. A high-precision silicone mold core according to claim 3, characterized in that: A guide slope (9) is installed in the inner cavity of the core head (4), and the small hole (7) is connected to the inner hole (8) through the guide slope (9). The left side of the inner cavity of the core head (4) is 50°, and the guide slope (9) is 120°.

6. A high-precision silicone mold core according to claim 1, characterized in that: The left sides of the outer wall of the base (2) are both provided with chamfers, the radius of the chamfers is 0.1 mm, a screw thread is installed in the inner cavity of the center tube (5), the outer wall dimensions of the base (2) are 1.00 mm, 1.65 mm, 2.70 mm and 3.80 mm from right to left, respectively, the base (2) is a cavity structure with left and right sides communicating with the outside world, the base (2) is in communication with the inner cavity of the center tube (5), and the left side diameter of the base (2) is 2.50 mm.

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