Vacuum adsorption precision mold pressing device

Abstract

The utility model relates to the technical field of mould pressing devices, in particular to a vacuum adsorption precise mould pressing device. A plurality of adsorption holes are uniformly distributed in the surface of the lower die; the adsorption hole penetrates to the bottom of the lower die; a connecting pipe communicated with the adsorption hole is fixed at the bottom of the lower die assembly; the connecting pipe is connected to a vacuum pump. When the device is used, gas between the inner cavity of the lower mold and preformed glass can be quickly pumped away in the initial stage of compression molding through the connecting pipe and the adsorption holes by the vacuum pump, so that gas residue between the inner cavity of the lower mold and the preformed glass is reduced to a great extent, and the preformed glass is more attached to the surface of the cavity of the lower mold during molding; and the surface quality of glass forming is higher.

Description

A vacuum adsorption precision molding device Technical Field

[0001] This utility model relates to the field of molding device technology, and in particular to a vacuum adsorption precision molding device. Background Technology

[0002] Currently, glass molding technology is widely used in the manufacturing of optical components. Traditional glass molding equipment forms the glass within a sealed cavity. The pre-formed glass is placed in the lower mold, the cavity is filled with nitrogen to remove fumes, and then the workstation is heated. As a result, the mold cavity is also filled with nitrogen. When the mold closes and presses down on the pre-formed glass, the air between the pre-formed glass and the lower mold is difficult to expel, causing gas to stagnate in the gap between them. When the softened glass is compressed within the mold cavity, the residual gas can easily form pores or cause insufficient adhesion between the glass surface and the lower mold, affecting the optical performance and surface quality of the finished product.

[0003] Therefore, it is necessary to further innovate the existing glass molding equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a vacuum adsorption precision molding device to address the defects and shortcomings of existing technologies.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] The present invention discloses a vacuum adsorption precision molding device, comprising an upper mold assembly and a lower mold assembly; the lower mold assembly includes a lower mold.

[0007] The surface of the lower mold is evenly distributed with multiple adsorption holes; the adsorption holes extend to the bottom of the lower mold.

[0008] The bottom of the lower mold assembly is fixed with a connecting pipe that communicates with the adsorption hole; the connecting pipe is connected to a vacuum pump.

[0009] Furthermore, the upper mold assembly consists of an upper mold fixing plate, an upper heating plate fixed on the upper mold fixing plate, and an upper mold fixed on the upper heating plate; the lower mold assembly also includes a lower heating plate and a lower mold fixing plate; the lower mold and the lower mold fixing plate are respectively fixed on the upper and lower sides of the lower heating plate; the connecting pipe is fixed on the bottom of the lower mold fixing plate.

[0010] Furthermore, the vacuum pump is equipped with a heat exchanger; one end of one of the pipes of the heat exchanger is connected to the connecting pipe and the air inlet port of the vacuum pump, respectively.

[0011] Furthermore, the heat exchanger is a plate heat exchanger.

[0012] Furthermore, a flexible hose is connected between the heat exchanger and the connecting pipe.

[0013] Furthermore, the product formed by the upper mold assembly and the lower mold assembly is molded glass; the molded glass consists of finished products and scraps; the adsorption holes are positioned directly opposite the scraps.

[0014] Furthermore, the scrap material is in a ring shape; the scrap material is arranged around the outside of the finished product; the adsorption holes are distributed circumferentially.

[0015] With the above structure, the beneficial effects of this utility model are as follows: the vacuum pump can quickly extract the gas between the lower mold cavity and the preformed glass in the early stage of molding through the connecting pipe and the adsorption hole, which greatly reduces the gas residue between the lower mold cavity and the preformed glass. When the preformed glass is formed, it fits the cavity surface of the lower mold better, and the surface quality of the glass is higher. Attached Figure Description

[0016] Figure 1 is a structural schematic diagram of this utility model;

[0017] Figure 2 is a cross-sectional view of the mold wavesection;

[0018] Figure 3 is an enlarged view of part A in Figure 2;

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Upper mold fixing plate; 2. Upper heating plate; 3. Lower heating plate; 301. Lower vent hole;

[0021] 4. Lower mold fixing plate; 5. Hoses; 6. Heat exchanger; 7. Vacuum pump; 8. Lower mold;

[0022] 801. Adsorption hole; 9. Upper mold; 10. Connecting tube; 11. Molded glass; 1101. Finished product;

[0023] 1102. Scrap materials. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] As shown in Figures 1 to 3, the vacuum adsorption precision molding device of this utility model includes an upper mold assembly and a lower mold assembly; the lower mold assembly includes a lower mold 8;

[0026] The surface of the lower mold 8 is evenly distributed with a plurality of adsorption holes 801; the adsorption holes 801 extend to the bottom of the lower mold 8.

[0027] The bottom of the lower mold assembly is fixed with a connecting pipe 10 that communicates with the adsorption hole 801; the connecting pipe 10 is connected to the vacuum pump 7.

[0028] During molding, the upper mold assembly and the lower mold assembly move close to each other;

[0029] The vacuum pump 7 can quickly extract the gas between the inner cavity of the lower mold 8 and the preformed glass through the connecting pipe 10 and the adsorption hole 801 in the early stage of molding, which greatly reduces the gas residue between the inner cavity of the lower mold 8 and the preformed glass. When the preformed glass is formed, it fits the cavity surface of the lower mold 8 better, and the surface quality of the glass is higher.

[0030] In a preferred embodiment of this utility model, the upper mold assembly comprises an upper mold fixing plate 1, an upper heating plate 2 fixed on the upper mold fixing plate 1, and an upper mold 9 fixed on the upper heating plate 2; the lower mold assembly further comprises a lower heating plate 3 and a lower mold fixing plate 4; the lower mold 8 and the lower mold fixing plate 4 are respectively fixed on the upper and lower sides of the lower heating plate 3; the connecting pipe 10 is fixed to the bottom of the lower mold fixing plate 4;

[0031] The upper mold 9 and the lower mold 8 are components used for direct contact molding with the preformed glass;

[0032] The lower heating plate 3 is provided with a lower exhaust hole 301 that is connected to the adsorption hole 801, and the lower mold fixing plate 4 is provided with a through hole that connects the lower exhaust hole 301 to the connecting pipe 10. After the vacuum pump 7 is turned on, the gap between the inner cavity of the lower mold 8 and the preformed glass enters the vacuum pump 7 through the adsorption hole 801, the lower exhaust hole 301 and the through hole.

[0033] In a preferred embodiment of this utility model, the vacuum pump 7 is equipped with a heat exchanger 6; one end of one pipe of the heat exchanger 6 is connected to the connecting pipe 10 and the air inlet of the vacuum pump 7 respectively; the other end of the heat exchanger 6 is connected to an external cooling circulation device, which can be a circulating cooling water, through which cooling water flows to the heat exchanger 6; the gas entering through the connecting pipe 10 enters the vacuum pump 7 after passing through the pipe of the heat exchanger 6;

[0034] The cooling water in the cooling water circuit cools the gas in the pipeline connecting the heat exchanger 6 to the vacuum pump 7 before it enters the vacuum pump 7. This reduces the temperature of the gas entering the vacuum pump 7, making the operation of the vacuum pump 7 more stable and ensuring its service life.

[0035] In a preferred embodiment of this utility model, the heat exchanger 6 is a plate heat exchanger.

[0036] In a preferred embodiment of this utility model, a flexible hose 5 is connected between the heat exchanger 6 and the connecting pipe 10; the flexible hose 5 is a high-temperature resistant pipe, and the flexible hose 5 allows for a space for thermal deformation between the heat exchanger 6 and the connecting pipe 10.

[0037] In a preferred embodiment of this invention, the product formed by the upper mold assembly and the lower mold assembly is molded glass 11; the molded glass 11 consists of finished product 1101 and scrap 1102; the adsorption hole 801 is positioned directly opposite the scrap 1102; after the upper and lower molds form the molded glass into molded glass 11, the adsorption hole 801 will be positioned directly opposite the scrap 1102, and then the scrap 1102 will be cut out from the molded glass 11 to obtain the finished product 1101. In this way, the surface of the finished product 1101 does not have the convexity caused by the adsorption hole 801, thus improving the surface quality of the finished product 1101.

[0038] In a preferred embodiment of this utility model, the scrap material 1102 is in the shape of an annular ring; the scrap material 1102 is arranged around the outside of the finished product 1101; the adsorption holes 801 are distributed in a circular pattern; the circularly distributed adsorption holes 801 can quickly and easily draw out the gas from various positions of the preformed glass, thereby improving the efficiency of exhaust.

[0039] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A vacuum adsorption precision molding device, comprising an upper mold assembly and a lower mold assembly; the lower mold assembly comprising a lower mold (8); characterized in that: The lower mold (8) has a plurality of adsorption holes (801) evenly distributed on its surface; the adsorption holes (801) extend to the bottom of the lower mold (8); the bottom of the lower mold assembly is fixed with a connecting pipe (10) that communicates with the adsorption holes (801); the connecting pipe (10) is connected to a vacuum pump (7).

2. The vacuum adsorption precision molding device according to claim 1, characterized in that: The upper mold assembly consists of an upper mold fixing plate (1), an upper heating plate (2) fixed on the upper mold fixing plate (1), and an upper mold (9) fixed on the upper heating plate (2); the lower mold assembly also includes a lower heating plate (3) and a lower mold fixing plate (4); the lower mold (8) and the lower mold fixing plate (4) are respectively fixed on the upper and lower sides of the lower heating plate (3); the connecting pipe (10) is fixed at the bottom of the lower mold fixing plate (4).

3. The vacuum adsorption precision molding device according to claim 1, characterized in that: The vacuum pump (7) is equipped with a heat exchanger (6); one end of one of the pipes of the heat exchanger (6) is connected to the connecting pipe (10) and the air inlet of the vacuum pump (7) respectively.

4. The vacuum adsorption precision molding device according to claim 3, characterized in that: The heat exchanger (6) is a plate heat exchanger.

5. The vacuum adsorption precision molding device according to claim 3, characterized in that: A flexible hose (5) is connected between the heat exchanger (6) and the connecting pipe (10).

6. The vacuum adsorption precision molding device according to claim 1, characterized in that: The product formed by the upper mold assembly and the lower mold assembly is shaped glass (11); the shaped glass (11) is composed of finished product (1101) and scrap (1102); the adsorption hole (801) is set opposite to the scrap (1102).

7. The vacuum adsorption precision molding device according to claim 6, characterized in that: The scrap material (1102) is in the shape of a ring; the scrap material (1102) is arranged around the outside of the finished product (1101); the adsorption holes (801) are distributed in a circular pattern.

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