Curved mirror machining die

Abstract

The utility model discloses a curved mirror processing mould which comprises an upper mould and a lower mould, a circle of upper mould outer wall and a circle of upper mould inner wall are arranged in the upper mould, an upper groove cavity is arranged between the upper mould outer wall and the upper mould inner wall, a circle of lower mould inner wall and a circle of lower mould outer wall are arranged in the lower mould, and a lower groove cavity is arranged between the lower mould inner wall and the lower mould outer wall. A heat insulation layer is formed between the outer wall of the lower die and the inner wall of the upper die, an upper die cavity is formed in the inner wall of the upper die, an upper die pressing part is arranged in the upper die cavity, a clamping groove is formed between the inner wall of the upper die and the upper die pressing part, a lower die cavity is formed in the inner wall of the lower die, and when the upper die and the lower die are closed, the upper die pressing part is pressed into the lower die cavity, and the outer wall of the lower die is inserted into the upper groove cavity. And the inner wall of the lower die is inserted into the clamping groove. The temperature is uniform in the cooling process, and the hot bending quality of the lens is improved.

Description

Technical Field

[0001] The utility model relates to a mold, in particular to a curved mirror processing mold mainly used for eyeglass lenses on AR HUD, AR and other products. Background Art

[0002] For various types of lenses, such as those used in AR HUD, AR and other products, curved lenses are more complicated to shape than flat lenses. For such optical glass lenses, after being heated and bent in the mold, they are prone to uneven stress release during the cooling process, which can lead to deformation. In addition, insufficient guiding accuracy of the upper mold during the downward pressure molding process can also cause deviation, resulting in poor accuracy of the hot-bent product, which is difficult to meet the needs of AR HUD, AR and other products that require high-precision lenses. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a curved mirror processing mold for hot bending of optical glass.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A curved mirror processing mold comprises an upper mold and a lower mold, wherein the upper mold is provided with a circle of upper mold outer wall and a circle of upper mold inner wall, an upper groove cavity is provided between the upper mold outer wall and the upper mold inner wall, the lower mold is provided with a circle of lower mold inner wall and a circle of lower mold outer wall, a lower groove cavity is provided between the lower mold inner wall and the lower mold outer wall, a heat insulation layer is formed between the lower mold outer wall and the upper mold inner wall, an upper mold cavity is formed inside the upper mold inner wall, an upper mold pressing piece is provided in the upper mold cavity, a slot is provided between the upper mold inner wall and the upper mold pressing piece, a lower mold cavity is formed inside the lower mold inner wall, and when the upper mold and the lower mold are closed, the upper mold pressing piece is pressed into the lower mold cavity, the lower mold outer wall is inserted into the upper groove cavity, and the lower mold inner wall is inserted into the slot.

[0006] The outer side surface of the lower mold outer wall is in contact with the inner side surface of the upper mold outer wall. There is a spacing distance between the inner side surface of the lower mold outer wall and the outer side surface of the upper mold inner wall to form a cavity, which is a heat insulation layer.

[0007] The side walls of the inner wall of the lower mold are in contact with the inner side surface of the inner wall of the upper mold, and the inner side surface of the inner wall of the lower mold is in contact with the side surface of the slot.

[0008] A positioning block is arranged in the lower mold cavity, and the positioning block is closely connected with the inner wall of the lower mold.

[0009] Four positioning blocks are arranged in the lower mold cavity, and the four positioning blocks are evenly distributed in the lower mold cavity.

[0010] The end surface of the inner wall of the lower mold is provided with a concave groove.

[0011] The utility model utilizes the insertion of the lower mold outer wall, the lower mold inner wall and the upper groove cavity and the slot, and the insertion of the upper mold inner wall and the lower groove cavity, which is a double-guide structure to achieve precise positioning and ensure that the mold has stable parallelism during the pressing process. In addition, by utilizing the heat insulation layer, the temperature can be evenly reduced during the cooling process, so that the temperature around the workpiece is maintained uniformly, ensuring that the mold side is quickly cooled due to nitrogen, and the stress release is more uniform, so that no additional deformation will occur, thereby improving the quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the exploded structure of the utility model;

[0014] Figure 3 Schematic diagram of the three-dimensional structure of the upper mold;

[0015] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model after mold closing.

[0016] Reference numerals:

[0017] Upper mold 1, lower mold 2, upper mold outer wall 3, upper mold inner wall 4, upper groove cavity 5, lower mold inner wall 6, lower mold outer wall 7, lower groove cavity 8, heat insulation layer 9, upper mold pressing part 10, card slot 11, lower mold cavity 12, positioning block 13, recessed groove 14. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0019] In the description of the present utility model, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0020] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] like Figure 1-4As shown, a curved mirror processing mold includes an upper mold 1 and a lower mold 2, wherein the upper mold 1 is provided with a circle of upper mold outer wall 3 and a circle of upper mold inner wall 4, an upper groove cavity 5 is provided between the upper mold outer wall 3 and the upper mold inner wall 4, the lower mold 2 is provided with a circle of lower mold inner wall 6 and a circle of lower mold outer wall 7, a lower groove cavity 8 is provided between the lower mold inner wall 6 and the lower mold outer wall 7, a heat insulation layer 9 is formed between the lower mold outer wall 7 and the upper mold inner wall 4, an upper mold cavity is formed inside the upper mold inner wall 4, an upper mold pressing part 10 is provided in the upper mold cavity, a slot 11 is provided between the upper mold inner wall 4 and the upper mold pressing part 10, a lower mold cavity 12 is formed inside the lower mold inner wall 6, and when the upper mold 1 and the lower mold 2 are closed, the upper mold pressing part 10 is pressed into the lower mold cavity 12, the lower mold outer wall 6 is inserted into the upper groove cavity 5, and the lower mold inner wall 6 is inserted into the slot. The insertion of the lower mold outer wall 7, the lower mold inner wall 6, the upper groove cavity 5, and the slot 11, and the insertion of the upper mold inner wall 4 and the lower groove cavity 8 are double-guide structures to achieve precise positioning and ensure that the mold has stable parallelism during the pressing process. In addition, the use of the heat insulation layer can make the temperature drop evenly during the cooling process, so that the temperature around the workpiece is maintained uniformly, ensuring that the mold side is quickly cooled due to nitrogen, and the stress release is more uniform, without additional deformation, thereby improving quality.

[0022] The outer side surface of the lower mold outer wall 3 is in contact with the inner side surface of the upper mold outer wall 7. There is a spacing distance between the inner side surface of the lower mold outer wall 6 and the outer side surface of the upper mold inner wall 4 to form a cavity. The cavity is an insulating layer +. The insulating layer is a cavity structure. Insulating and conductive air is formed through air. Through this insulating layer between the upper mold inner wall 4 and the lower mold outer wall 7, the insulating effect is achieved, ensuring that the mold side is quickly cooled due to nitrogen.

[0023] The side walls of the lower mold inner wall 6 are in contact with the inner side of the upper mold inner wall 4 , and the inner side of the lower mold inner wall 6 is in contact with the side of the slot 11 , so the fit is tighter.

[0024] The lower die cavity is provided with a positioning block 13, which is closely connected to the lower die inner wall 6. The lower die cavity 12 is provided with four positioning blocks 13, which are evenly distributed in the lower die cavity, so that the workpiece is accurately positioned and will not shift during the hot bending process.

[0025] The end surface of the lower mold inner wall 6 is provided with a plurality of recessed grooves 14 for cooling.

[0026] In the utility model, the gap between the side walls of the upper mold and the lower mold is used to form a heat insulation layer of the cavity structure, so as to achieve a heat preservation effect, ensure that the mold side is quickly cooled by nitrogen, and keep the mold temperature around the workpiece uniform during the cooling process. In addition, the mutual insertion between the side walls makes the guidance more accurate.

[0027] It should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A curved mirror processing mold, comprising an upper mold and a lower mold, characterized in that: The upper mold is provided with a circle of upper mold outer wall and a circle of upper mold inner wall, an upper groove cavity is provided between the upper mold outer wall and the upper mold inner wall, the lower mold is provided with a circle of lower mold inner wall and a circle of lower mold outer wall, a lower groove cavity is provided between the lower mold inner wall and the lower mold outer wall, a heat insulation layer is formed between the lower mold outer wall and the upper mold inner wall, an upper mold cavity is formed inside the upper mold inner wall, an upper mold pressing part is provided in the upper mold cavity, a slot is provided between the upper mold inner wall and the upper mold pressing part, a lower mold cavity is formed inside the lower mold inner wall, and when the upper mold and the lower mold are closed, the upper mold pressing part is pressed into the lower mold cavity, the lower mold outer wall is inserted into the upper groove cavity, and the lower mold inner wall is inserted into the slot.

2. The curved mirror processing mold according to claim 1, characterized in that: The outer side surface of the lower mold outer wall is in contact with the inner side surface of the upper mold outer wall. There is a spacing distance between the inner side surface of the lower mold outer wall and the outer side surface of the upper mold inner wall to form a cavity, which is a heat insulation layer.

3. The curved mirror processing mold according to claim 2, characterized in that: The side walls of the inner wall of the lower mold are in contact with the inner side surface of the inner wall of the upper mold, and the inner side surface of the inner wall of the lower mold is in contact with the side surface of the slot.

4. The curved mirror processing mold according to claim 1, characterized in that: A positioning block is arranged in the lower mold cavity, and the positioning block is closely connected with the inner wall of the lower mold.

5. The curved mirror processing mold according to claim 4, characterized in that: Four positioning blocks are arranged in the lower mold cavity, and the four positioning blocks are evenly distributed in the lower mold cavity.

6. The curved mirror processing mold according to claim 1, characterized in that: The end surface of the inner wall of the lower mold is provided with a concave groove.

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