CN107176782B

CN107176782B - Glass hot bending die

Info

Publication number: CN107176782B
Application number: CN201710500844.6A
Authority: CN
Inventors: 范少荣; 任书明; 陈发伟; 王耀君
Original assignee: Tunghsu Group Co Ltd; Tunghsu Technology Group Co Ltd
Current assignee: Dongxu Optoelectronic Technology Co Ltd
Priority date: 2017-06-27
Filing date: 2017-06-27
Publication date: 2020-01-10
Anticipated expiration: 2037-06-27
Also published as: TW201904890A; CN107176782A; TWI712564B; WO2019001190A1

Abstract

The utility model relates to a glass hot bending mould, including terrace die (1) and die (2) of mutually supporting, the periphery of terrace die (1) and die (2) all is formed with the bending die that has the periphery of curvature for shaping glassware (3), wherein, glass hot bending mould still includes and is used for exerting towards the central zone of glassware (3) and is orientation pressure device (4) of terrace die (1) direction pressure in the relative approximate in-process of terrace die (1) and die (2). Thus, the pressure applied to the central area of the glass product by the pressurizing device eliminates the deformation of the central area of the glass product caused by the external force generated by pressing the female die to the male die.

Description

Glass hot bending die

Technical Field

The disclosure relates to the field of glass processing and forming, in particular to a glass hot bending die.

Background

At present, a mold for 3D mobile phone glass generally comprises a male mold and a female mold. During the glass forming process, the periphery of the glass is bent by heat and external pressure. But at the same time the central region of the glass is inevitably deformed by the action of the external pressure. The deformation of the central area of the glass can be fixed in the shaping process, and the deformation of the central area of the glass can influence the image display of the mobile phone.

Disclosure of Invention

The purpose of the present disclosure is to provide a glass hot bending mold, which can effectively avoid the deformation of the central area in the glass product forming process.

In order to achieve the above object, the present disclosure provides a glass hot-bending mold including a male mold and a female mold which are engaged with each other, and the peripheries of the male mold and the female mold are each formed with a bending mold having a periphery with curvature for molding a glass article, wherein the glass hot-bending mold further includes a pressurizing device for applying a pressure toward the male mold toward a central region of the glass article during the relative approach of the male mold and the female mold.

Optionally, the pressing device comprises a pressing rod and a pressing plate for being attached to the glass product, and the pressing rod is vertically connected to the upper surface of the pressing plate through the concave die in a relatively sliding mode.

Optionally, the number of the pressing rods is multiple, and the pressing rods are connected to the pressing plate at intervals uniformly.

Optionally, the number of the pressing rods is one, and the cross-sectional area of each pressing rod is consistent with the surface area of the pressing plate.

Optionally, the compression bar is removably connected to the compression plate.

Optionally, a through hole for passing through the pressing rod is formed in the female die, and the pressing rod is in clearance fit with the through hole.

Optionally, the platen has an area that is no greater than an area of a central region of the glass article.

Optionally, the concave die is formed with a groove which is used for accommodating and matching with the pressure plate in shape, and the inner side top wall of the concave die facing the pressure plate is formed with a groove which is used for accommodating and matching with the pressure plate in shape.

Optionally, the surface roughness of the press plate and the punch is no greater than 0.08 μm.

Optionally, the male die, the female die and the pressing plate are made of graphite.

The beneficial effect of this technique is: in the process of gradually forming the peripheral curved surface of the glass product, the pressure in the direction towards the male die is applied towards the central area of the glass product by the pressurizing device, so that the deformation of the central area of the glass product caused by the external acting force generated by pressing the female die towards the male die is eliminated. Therefore, the problem of deformation of the central area of the glass product can be effectively solved under the condition of ensuring the curved surface forming of the periphery of the glass product.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a cross-sectional view of a glass hot bending mold provided by the present disclosure.

FIG. 2 is a schematic diagram of a top view of a glass hot bending mold provided by the present disclosure.

Description of the reference numerals

1 male die and 2 female die

3 glass product 4 pressure device

41 pressure bar 42 pressure plate

21 groove

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

As shown in fig. 1 and 2, the present disclosure provides a glass hot-bending mold comprising a male mold 1 and a female mold 2 which are fitted to each other, the peripheries of the male mold 1 and the female mold 2 each being formed with a bending mold having a periphery with curvature for molding a glass product 3, wherein the glass hot-bending mold further comprises a pressing device 4 for applying a pressure toward the male mold 1 toward a central region of the glass product 3 during the relative approach of the male mold 1 and the female mold 2.

In the process of forming the glass product, the glass product 3 can gradually bend the periphery of the glass product 3 to form a curved surface with a certain curvature through the combined action of high-temperature heating and the pressure applied by the female die 2 towards the male die 1. At this time, on the other hand, since the central region of the glass product 3 is also subjected to a certain deformation such as warpage when subjected to the above-mentioned pressure, in order to avoid the central region of the glass product 3 from being deformed during the molding process, the pressing device 4 applies a pressure toward the central region of the glass product in the direction of the punch 1 in the process of relatively approaching the punch 1 and the die 2, so as to eliminate the deformation of the central region of the glass product 3, so that the central region of the glass product is not affected by the pressure of the die 2 against the punch 1 during the molding process of the glass product 3, and is always kept in a flat state, and deformation such as warpage is not generated, thereby ensuring normal display of a mobile phone image.

Specifically, as shown in fig. 1, the pressing device 4 includes a pressing rod 41 and a pressing plate 42 for being attached to the glass product 3, and the pressing rod 41 is vertically connected to an upper surface of the pressing plate 42 through the concave mold 2 in a relatively slidable manner. That is, the pressing plate 42 is located between the female mold 2 and the male mold 1, the pressing rod 41 is vertically connected to the pressing plate 42, and the female mold 2 can be freely attached to the pressing plate 42 through the pressing rod 41. In the process of forming the glass product, the pressing plate 42 is positioned above the glass product 3, and the pressing rod 41 applies pressure towards the direction of the male die 1 to the central area of the glass product 3, so that the deformation of the central area of the glass product 3 in the forming process is eliminated. Wherein the directional word "up" is defined as up and down as shown in the drawing of figure 1.

In order to ensure that the pressure plate 42 is uniformly acted by the pressure rods 41, as an embodiment, the number of the pressure rods 41 may be multiple, and the pressure rods are respectively connected to the pressure plate 42 at uniform intervals. That is, the pressure plate 42 is vertically connected with a plurality of pressure rods 41, and the pressure rods 41 are uniformly arranged on the upper surface of the pressure plate 42, so as to ensure uniform stress of the pressure plate 42.

As another embodiment, the number of the pressing rods 41 may be one, and the cross-sectional area of the pressing rods 41 is identical to the surface area of the pressing plate 42. For example, the upper surface of the pressure plate 42 may be formed in a circular shape, and the surface area of the circular shape is the same as and the same as the cross-sectional area of the pressing rod 41, so that the pressure plate 42 is uniformly stressed.

In order to facilitate the attachment and detachment of the pressing lever 41, in the present embodiment, the pressing lever 41 is detachably connected to the pressing plate 42. For example, a threaded connection or the like may be used.

In order to ensure the surface quality of the glass product 3, the pressing rod 41 is always perpendicular to the pressing plate 42 when the pressing rod 41 applies pressure to the pressing plate 42. In the present embodiment, the female die 2 is provided with a through hole for passing through the pressing rod 41, and the pressing rod 41 is in clearance fit with the through hole. That is, the pressing rod 41 and the concave die 2 are independent from each other, but are mutually limited, the concave die 2 can only move along the axial direction of the pressing rod 41, and the pressing rod 41 and the pressing plate 42 are always kept vertical, so that when the pressing plate 42 applies pressure towards the central area of the glass product 3, the glass product 3 can be prevented from sliding, and the glass product 3 is prevented from being defective at high temperature.

In order to prevent the pressing plate 42 from exerting a force on the side portions of the glass product 3, in the present embodiment, the area of the pressing plate 42 is not larger than the area of the central region of the glass product 3. Wherein the central area refers to the non-deformed region and the periphery of the glass product 3 refers to the deformed region. The pressure of the pressure plate 42 against the central region prevents deformation of the central region. Therefore, the area of the pressing plate 42 only needs to be applied to the non-deformation region of the glass product 3.

Since the glass hot-bending mold is provided with a pressurizing device, in order to ensure the deformation amount of the periphery of the glass product 3, in the present embodiment, the concave mold 2 is formed with a groove 21 which is accommodated and matched with the pressing plate 42 in shape on the inner top wall facing the pressing plate 42. Like this, when the die 2 constantly pressed down to terrace die 1, in clamp plate 42 accommodated the recess 21, at this moment, clamp plate 42 and die 2 cooperation are as an organic whole, and die 2 alright continue to push down glassware 3 with driving clamp plate 42, guarantee the peripheral deflection of glassware 3.

In the present embodiment, the surface roughness of the press plate 42 and the punch 1 is not more than 0.08 μm in the present embodiment due to the direct contact of the press plate 42 and the punch 1 with the glass article 3. In other words, the surface finish of the platen 42 and the punch 1 is at least 11 grade, preventing scratching of the glass product 3 when it comes to contact with it.

Since the glass product 3 is in a high temperature state during the molding process, the material of the punch 1, the die 2, and the platen 42 is graphite in the present embodiment. The graphite can not deform due to temperature rise, and other deformation caused by the deformation of the material of the mold in the forming process of the glass product 3 can not be caused.

In summary, the present disclosure provides a glass hot-bending mold, in which a pressing device applies a pressure toward a central region of a glass product in a direction toward a male mold, so as to eliminate an external force generated by pressing a female mold against the male mold, thereby eliminating deformation of the central region of the glass product. Therefore, the problem of deformation of the central area of the glass product can be effectively solved under the condition of ensuring the curved surface forming of the periphery of the glass product.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A glass hot bending die, which comprises a male die (1) and a female die (2) which are matched with each other, the peripheries of the male die (1) and the female die (2) are both provided with a bending die with a curvature periphery for molding a glass product (3), characterized in that the glass hot bending mould also comprises a pressurizing device (4) for applying pressure towards the direction of the convex mould (1) towards the central area of the glass product (3) during the relative approach of the convex mould (1) and the concave mould (2), the pressing device (4) comprises a pressing rod (41) and a pressing plate (42) which is used for being attached to the glass product (3), the compression bar (41) can vertically connect to the upper surface of the pressure plate (42) through the concave die (2) in a relatively sliding way, the concave die (2) is provided with a groove (21) which is used for accommodating and is matched with the pressing plate (42) in shape and is formed on the inner top wall of the pressing plate (42).

2. A glass bending mould according to claim 1, wherein the number of the press rods (41) is plural, and the press rods are respectively connected to the press plates (42) at regular intervals.

3. A glass hot bending mould according to claim 1, wherein the number of the pressing rods (41) is one, and the cross-sectional area of the pressing rods (41) is in accordance with the surface area of the pressing plate (42).

4. Glass hot-bending mould according to claim 1, characterized in that the press bar (41) is detachably connected to the press plate (42).

5. The glass hot bending die according to any one of claims 1 to 4, wherein the female die (2) is provided with a through hole for passing through the pressing rod (41), and the pressing rod (41) is in clearance fit with the through hole.

6. A glass hot-bending mould according to claim 5, characterized in that the area of the press plate (42) is not greater than the area of the central region of the glass article (3).

7. A glass hot-bending mould according to claim 1, characterized in that the surface roughness of the press plate (42) and the male mould (1) is not more than 0.08 μm.

8. A glass hot-bending mould according to claim 1, characterized in that the male mould (1), the female mould (2) and the press plate (42) are made of graphite.