CN219567788U

CN219567788U - HUD aspheric glass forming die

Info

Publication number: CN219567788U
Application number: CN202320990268.9U
Authority: CN
Inventors: 王志凌; 曾延华; 何建明
Original assignee: Guangdong Easide Electronic Technology Co ltd
Current assignee: Guangdong Easide Electronic Technology Co ltd
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2023-08-22
Anticipated expiration: 2033-04-27

Abstract

The utility model discloses a HUD aspheric surface glass forming die, which relates to the technical field of forming dies and comprises a lower die holder, a movable positioning column, a glass forming die cavity, a heat conduction exhaust hole and a heat conduction frame, wherein the glass forming die cavity is formed in the lower die holder, the heat conduction frame is arranged in the glass forming die cavity, a heat conduction cavity is formed in the lower die holder, the heat conduction exhaust hole communicated with the heat conduction cavity is formed in the inner bottom wall of the glass forming die cavity, and a heat inlet communicated with the outside is formed in the heat conduction cavity. The HUD aspherical glass forming die has a simple structure, can conveniently and rapidly realize the hot bending forming of an aspherical curved glass product, ensures that the time and the temperature of each part of the product are uniform in the production process, effectively solves the problems of distortion, poor profile and the like of a forming area in the product forming process, and remarkably improves the production efficiency.

Description

HUD aspheric glass forming die

Technical Field

The utility model relates to the technical field of forming dies, in particular to a HUD aspheric glass forming die.

Background

In recent years, with the development of optoelectronics, the application of aspheric optical parts to military and civil products, such as cameras, optical disk drives, scanners, laser video disk devices, optical fiber communication connectors, medical instruments, office equipment, and the like, has been increasingly emphasized, and the surface of such a lens is irregular, so that when light irradiates the surface of the aspheric lens, the light is focused on a point after passing through the lens, various aberrations can be eliminated, and the imaging quality can be improved.

The traditional optical lens is mainly formed by hot pressing a die, then the surface of the lens is finished into a finished product, and the existing forming die is difficult to produce a high-precision aspheric glass lens because the existing forming die is low in material hardness and poor in surface finish, so that the die is low in precision and short in service life, and adhesion between glass and the inner surface of the die is easily caused when the glass is formed in the die.

Even if an aspherical lens is produced by a conventional method, the difficulty of finishing is high due to the irregular surface shape, and in general, the production is difficult and the manufacturing cost is high

The prior Chinese patent (publication No. CN 201447413U) proposes an aspherical glass lens thermoforming mold, which can produce high-precision and low-cost products by hot-pressing one-step forming, and comprises an upper half mold and a lower half mold, wherein the inner surfaces of the upper half mold and the lower half mold are respectively aspherical curved surfaces, and the inner surfaces of the upper half mold and the lower half mold are respectively provided with a layer of high-strength film which can resist high temperature and has smooth surfaces. The utility model is suitable for places for processing the aspherical glass lenses.

The forming die has the following defects when in use: the current HUD glass forming die is mainly simple in design compression molding of an upper die and a lower die, the formed product structure is single, the aspheric profile degree is not well controlled, the die cannot be changed after being set, the cost efficiency is reduced, meanwhile, after the aspheric glass is required to be cooled and solidified after being formed, a formed product is obtained, cooling generally occupies most of the forming period, and the forming period is controlled to improve the productivity.

Disclosure of Invention

The utility model provides a HUD aspherical glass forming die, which solves the technical problems that the prior HUD glass forming die mainly adopts simple upper die and lower die to design compression molding, the formed product structure is single, the aspherical profile degree is not well controlled, the die cannot be changed after being set, the cost efficiency is reduced, meanwhile, the aspherical glass is required to be cooled and solidified after being formed, a formed product is obtained, the cooling generally occupies most of the forming period, and the productivity is improved due to the control of the forming period.

In order to solve the technical problems, the HUD aspheric glass forming die comprises a lower die holder, a movable positioning column, a glass forming die cavity, a heat conduction vent hole and a heat conduction frame, wherein the glass forming die cavity is formed in the lower die holder, the heat conduction frame and the heat conduction cavity are arranged in the glass forming die cavity, the heat conduction vent hole communicated with the heat conduction cavity is formed in the inner bottom wall of the glass forming die cavity, a heat inlet communicated with the outside is formed in the heat conduction cavity, a plurality of positioning holes are formed in the top wall of the lower die holder, and the movable positioning column is inserted in the positioning holes.

Preferably, the inside of die holder has still been seted up the cooling chamber, the internally mounted in cooling chamber has the cooling tube, the one end of cooling tube is connected with the feed liquor pipe, the other end of feed liquor pipe is connected with the fluid-discharge tube, the one end that the cooling tube was kept away from to feed liquor pipe and fluid-discharge tube all extends to the outside of die holder.

Preferably, a diversion air duct and a main air duct are further formed in the lower die holder, the diversion air duct is communicated with the main air duct and the cooling cavity, and a plurality of through holes communicated with the cooling cavity are formed in the side wall of the heat conducting cavity.

Preferably, a single valve is installed inside the through hole.

Preferably, the cooling tube is made of copper.

Preferably, a dustproof net is arranged at the port of the main air duct, and the dustproof net is made of stainless steel.

Preferably, the split air duct is provided with a plurality of split air ducts, and a plurality of split air ducts are distributed at equal intervals.

Preferably, the cooling pipe is arranged in the cooling cavity in a serpentine shape.

Compared with the related art, the HUD aspherical glass forming die provided by the utility model has the following beneficial effects:

in the utility model, a positioning device is arranged after the lower die holder is assembled, and a D glass white piece is put in a glass forming die cavity arranged in the lower die holder, and the forming of a product is controlled by regulating and controlling the temperature parameter of a machine during the process; the production of the D glass with good profile and surface shape is not only suitable for processing of HUD aspheric glass, but also suitable for hot bending and forming of large-size D glass, the structure is simple, hot bending and forming of aspheric curved glass products can be conveniently and rapidly realized, the uniformity of the processed time and temperature of each part of the products in the production process is ensured, the problems of distortion, poor profile and the like of a forming area in the product forming process are effectively solved, and the production efficiency is remarkably improved.

According to the utility model, external cooling liquid is injected into the cooling pipe from the liquid inlet pipe and then discharged from the liquid outlet pipe, and the cooling liquid rapidly cools the product in the glass molding die cavity in the flowing process of the cooling pipe, so that the product molding is accelerated, and the product molding efficiency is improved.

According to the utility model, external air can be extracted through the fan and conveyed into the main air duct, then the main air duct enters the inside of the split air duct, then the split air duct uniformly enters the inside of the cooling cavity, cooling liquid in the cooling pipe can cool the air, the cooled low-temperature air enters the inside of the heat conducting cavity through the through hole, and then the heat conducting cavity blows the air to the inside of the glass forming cavity, so that the cooling efficiency of products in the glass forming cavity is improved.

Drawings

FIG. 1 is a schematic top view of a HUD aspherical glass molding die;

FIG. 2 is a schematic side sectional view of a HUD aspherical glass molding die;

FIG. 3 is a schematic view of a cooling tube structure in a HUD aspherical glass molding die;

fig. 4 is an enlarged view of the structure at a in fig. 2.

Reference numerals in the drawings: 1. a lower die holder; 2. a movable positioning column; 3. a glass molding cavity; 4. a heat conduction vent; 5. a heat conduction frame; 6. a cooling tube; 7. a liquid inlet pipe; 8. a liquid discharge pipe; 9. a split air duct; 10. a main air duct; 11. a dust screen; 12. a heat conducting cavity; 13. a heat inlet; 14. a through hole; 15. a cooling chamber; 16. a single valve.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

1-4, a HUD aspheric glass forming die comprises a lower die holder 1, a movable positioning column 2, a glass forming die cavity 3, a heat conduction vent hole 4 and a heat conduction frame 5, wherein the glass forming die cavity 3 is formed in the lower die holder 1, the heat conduction frame 5 is arranged in the glass forming die cavity 3, a heat conduction cavity 12 is formed in the lower die holder 1, a heat conduction vent hole 4 communicated with the heat conduction cavity 12 is formed in the inner bottom wall of the glass forming die cavity 3, a heat inlet 13 communicated with the outside is formed in the heat conduction cavity 12, a plurality of positioning holes are formed in the top wall of the lower die holder 1, the movable positioning column 2 is inserted in the positioning holes, when the HUD aspheric glass forming die is used, a positioning device is installed after the lower die holder 1 is assembled, a 2D glass white piece is placed in the glass forming die cavity 3 formed in the lower die holder 1, and the product is formed by regulating and controlling temperature parameters of a machine table during use; the 3D glass with good profile and surface shape is produced, so that the HUD aspherical glass forming die is not only suitable for processing HUD aspherical glass, but also suitable for hot bending forming of large-size 3D glass, has a simple structure, can conveniently and rapidly realize hot bending forming of aspherical curved glass products, ensures uniform processing time and temperature of each part of the products in the production process, effectively solves the problems of distortion, poor profile and the like of forming areas in the product forming process, and remarkably improves the production efficiency.

Referring to fig. 2, the cooling cavity 15 is further formed in the lower die holder 1, the cooling tube 6 is installed in the cooling cavity 15, one end of the cooling tube 6 is connected with the liquid inlet tube 7, the other end of the liquid inlet tube 7 is connected with the liquid outlet tube 8, one ends of the liquid inlet tube 7 and the liquid outlet tube 8, which are far away from the cooling tube 6, all extend to the outside of the lower die holder 1, after the aspherical glass is formed, external cooling liquid is injected into the cooling tube 6 from the liquid inlet tube 7, and is discharged by the liquid outlet tube 8, the cooling liquid rapidly cools products in the glass forming die cavity 3 in the flowing process of the cooling tube 6, product forming is accelerated, and product forming efficiency is improved.

Referring to fig. 1-4, on the basis of the first embodiment, a split air duct 9 and a main air duct 10 are further formed in the lower die holder 1, the split air duct 9 is communicated with the main air duct 10 and the cooling cavity 15, a plurality of through holes 14 communicated with the cooling cavity 15 are formed in the side wall of the heat conducting cavity 12, after the aspherical glass is formed, external air can be extracted through a fan and conveyed to the inside of the main air duct 10, then the aspherical glass enters the split air duct 9 through the main air duct 10, then the split air duct 9 uniformly enters the cooling cavity 15, cooling liquid can cool air through cooling pipes 6, cooled low-temperature air enters the heat conducting cavity 12 through the through holes 14 and is blown to the inside of the glass forming cavity 3, and cooling efficiency of products in the glass forming cavity 3 is accelerated.

Referring to fig. 4, in order to prevent hot air inside the heat conduction cavity 12 from entering the inside of the cooling cavity 15 during the hot bending forming, the inside of the through hole 14 is installed with a single valve 16.

Referring to fig. 3, in order to improve the heat conduction effect of the cooling tube 6, the cooling tube 6 is made of copper, and in order to increase the flow path of the cooling liquid in the cooling tube 6 and increase the heat exchange time, the cooling tube 6 is serpentine-shaped and is disposed in the cooling chamber 15.

Referring to fig. 2, in order to prevent external dust from entering the inside of the main air duct 10, a dust screen 11 is installed at a port of the main air duct 10, the dust screen 11 is made of stainless steel, and in addition, in order to enable wind to uniformly enter the inside of the cooling cavity 15, a plurality of split air ducts 9 are provided, and the plurality of split air ducts 9 are distributed at equal intervals.

Working principle: the HUD aspheric glass molding method comprises the following molding steps:

firstly, the lower die holder 1 is arranged on a hot bending machine; respectively inserting the movable positioning columns 2 into the positioning holes; placing the 2D glass white sheet into a glass molding cavity 3; linking the high-temperature conduction device; the door bin is folded to start heating and heat preservation, external cooling liquid is injected into the cooling tube 6 from the liquid inlet tube 7 after thermoforming is completed, then the cooling liquid is discharged from the liquid discharge tube 8, the cooling liquid rapidly cools products in the glass molding die cavity 3 in the flowing process of the cooling tube 6, product molding is accelerated, product molding efficiency is improved, external air can be extracted through a fan and conveyed to the inside of the main air duct 10, the main air duct 10 enters the inside of the split air duct 9, the split air duct 9 uniformly enters the inside of the cooling cavity 15, cooling liquid can cool air through cooling tube 6, cooled low-temperature air enters the inside of the heat conducting cavity 12 through the through hole 14 and is blown into the inside of the glass molding die cavity 3 through the heat conducting cavity 12, and cooling efficiency of products in the glass molding die cavity 3 is accelerated.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a HUD aspheric surface glass forming die, includes die holder (1), activity reference column (2), glass shaping die cavity (3), heat conduction exhaust hole (4) and heat conduction frame (5), a serial communication port, glass shaping die cavity (3) have been seted up to die holder (1) inside, the inside of glass shaping die cavity (3) is provided with and heat conduction frame (5), the inside of die holder (1) is provided with heat conduction chamber (12), the interior bottom wall of glass shaping die cavity (3) is provided with heat conduction exhaust hole (4) with heat conduction chamber (12) intercommunication, the inside of heat conduction chamber (12) is provided with inlet (13) with external intercommunication, be provided with many locating holes on the roof of die holder (1), the inside grafting of locating hole has activity reference column (2).

2. The HUD aspherical glass forming die according to claim 1, wherein a cooling cavity (15) is further formed in the lower die holder (1), a cooling pipe (6) is installed in the cooling cavity (15), one end of the cooling pipe (6) is connected with a liquid inlet pipe (7), the other end of the liquid inlet pipe (7) is connected with a liquid outlet pipe (8), and one ends of the liquid inlet pipe (7) and the liquid outlet pipe (8), far away from the cooling pipe (6), all extend to the outside of the lower die holder (1).

3. The HUD aspherical glass forming die according to claim 1 is characterized in that a split air duct (9) and a main air duct (10) are further arranged in the lower die holder (1), the split air duct (9) is communicated with the main air duct (10) and a cooling cavity (15), and a plurality of through holes (14) communicated with the cooling cavity (15) are formed in the side wall of the heat conducting cavity (12).

4. A HUD aspherical glass forming die according to claim 3, characterized in that the through hole (14) is internally mounted with a single valve (16).

5. The HUD aspherical glass molding die according to claim 2, wherein the cooling tube (6) is made of copper.

6. A HUD aspherical glass forming die according to claim 3, wherein a dust screen (11) is installed at a port of the main air duct (10), and the dust screen (11) is made of stainless steel.

7. A HUD aspherical glass forming die according to claim 3, wherein a plurality of the split air channels (9) are provided, and a plurality of the split air channels (9) are equidistantly distributed.

8. A HUD aspherical glass forming die according to claim 2, characterized in that the cooling tube (6) is arranged inside the cooling cavity (15) in a serpentine shape.