CN213012559U

CN213012559U - 3.5D glass hot-pressing and hot-absorbing forming die structure

Info

Publication number: CN213012559U
Application number: CN202021022546.4U
Authority: CN
Inventors: 曾新昌; 方金
Original assignee: Kornerstone Materials Technology Co Ltd
Current assignee: Kornerstone Materials Technology Co Ltd
Priority date: 2020-06-07
Filing date: 2020-06-07
Publication date: 2021-04-20
Anticipated expiration: 2030-06-07

Abstract

The utility model relates to a forming die structure is inhaled to 3.5D glass hot pressing heat, including the last mould that has the die cavity that takes shape and the lower mould of die cavity that takes shape down, go up the mould and set firmly the convex part that is used for impressing down the die cavity that takes shape, the last die cavity week side at convex part middle part is down to expand certain angle to one side, and the die cavity middle part that takes shape down has the shape and the size all with the plano-convex surface that the chamber top plane of last die cavity suited, and the chamber end and the vacuum gas tank of die cavity that take shape down are linked together. Simple structure, the material is very little drawn at the glass four corners, effectively solves the eight characters impression phenomenon that draws the material problem to lead to.

Description

3.5D glass hot-pressing and hot-absorbing forming die structure

Technical Field

The utility model relates to a 3.5D glass hot pressing hot-suction forming die structure.

Background

Since 2017, the mobile phone industry enters the full screen era, various screen forms such as a Liuhai screen, a water drop screen, a hole digging screen, a lifting full screen, a sliding full screen and the like are produced, the full screen focuses on the top space of the mobile phone, and the waterfall screen makes articles on the left frame, the right frame, the upper frame and the lower frame of the mobile phone body, so that a higher screen occupation ratio is sought. The waterfall screen can be directly extended to the back plate, and the screen occupation ratio of the full screen is refreshed again.

Regarding the waterfall screen, also called 3.5D glass in the industry, the super integrative visual experience that brings, smart mobile phone is going higher screen to account for, integration design direction evolution. Under the conditions that the appearance of the mobile phone is lack of innovation and the homogenization is increasingly serious, the appearance of the 3.5D glass and the waterfall screen is expected to bring up a new heat tide in the mobile phone industry, and the situation that the market of the smart phone is continuously fatigued is broken.

At present, the manufacture of 3.5D glass mainly comprises two modes of glass melting bonding technology and hot bending forming.

The main principle of fusion bonding is as follows: heating a piece of plate glass and a piece of ring glass to a molten state, welding the plate glass and the ring glass together in a splicing mode, welding the plate glass and the ring glass together in a welding mode similar to the process of welding base materials together in a welding mode, and removing redundant allowance through CNC engraving, namely, the front section is hot processed, and the rear section is cold processed, so that the cold and hot processing integrated body is formed. The disadvantages are as follows: the process is complex, the production period is slow, and the efficiency is low. But also the strength of the splice site is of greater concern. Drop tests are a big problem, and the drop tests of the whole machine are passed after continuous improvement of welding technology.

The existing hot bending forming method in the market has no seam, so that the method has better falling resistance. Compared with the glass melting bonding yield, the hot bending forming process has the advantages of space improvement and cost superiority. However, the existing hot bending forming mode in the market easily causes the thickness of the four corners of the plane of a glass product to be seriously thinned, so that the four corners cannot be pressed, splayed impressions are formed, the appearance is poor, and the thickness is thinned to influence the overall strength of the glass.

The invention provides a design structure of a hot-pressing and hot-sucking mold, which can effectively solve the problem in the industry.

SUMMERY OF THE UTILITY MODEL

In view of the not enough of prior art, the utility model aims to solve the technical problem that a 3.5D glass hot pressing hot-forming die structure is inhaled is provided, not only simple structure, convenient high efficiency moreover.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a 3.5D glass hot pressing heat is inhaled forming die structure, includes the last mould that has last shaping die cavity and the lower mould of shaping die cavity down, goes up the mould and sets firmly the convex part that is used for impressing shaping die cavity down, and the last shaping die cavity week side in convex part middle part is outwards expanded certain angle to one side, and lower shaping die cavity middle part has the planoconvex that shape and size all suit with the chamber top plane of last shaping die cavity, and the chamber bottom and the vacuum gas tank of lower shaping die cavity are linked together.

Preferably, the peripheral side of the upper forming cavity is inclined and expanded by 45 degrees outwards along the direction from the cavity top plane to the cavity bottom opening.

Preferably, a transition fillet is arranged between the peripheral side edge of the upper forming cavity and the top plane of the cavity, and a transition fillet is arranged at the right corner of the top of the flat convex surface.

Preferably, the height of the plane convex surface is smaller than the height of the lower forming cavity.

Preferably, the upper die is fixedly provided with vertical guide posts at four corners of the periphery of the convex part, and the lower die is provided with guide grooves for embedding the guide posts at four corners of the periphery of the lower forming cavity.

Preferably, a plurality of internal air holes are formed between the cavity bottom of the lower forming cavity and the vacuum air groove and are used for communicating the cavity bottom of the lower forming cavity with the vacuum air groove.

Preferably, the lower die is made of graphite material, and internal air holes are formed in the lower die.

Preferably, the plano-convex surface is the same shape and size as the cavity top plane.

Compared with the prior art, the utility model discloses following beneficial effect has: simple structure, the material is very little drawn at the glass four corners, effectively solves the eight characters impression phenomenon that draws the material problem to lead to. And the production process is simple, the period is short, the efficiency is high, and the product strength is high.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is a top view of an embodiment of the present invention.

Fig. 3 is a bottom view of the embodiment of the present invention.

Fig. 4 is a schematic view of a first working state in a sectional state of a-a in fig. 2.

Fig. 5 is a schematic view of a second working state in a sectional view of a-a in fig. 2.

Fig. 6 is a schematic view showing a third working state in a sectional state of a-a in fig. 2.

Detailed Description

In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1 to 6, a 3.5D glass hot-pressing and hot-sucking molding mold structure comprises an upper mold 2 having an upper molding cavity 1 and a lower mold 4 having a lower molding cavity 3, wherein the upper mold is fixedly provided with a convex portion 5 for pressing into the lower molding cavity, the peripheral side 6 of the upper molding cavity in the middle of the convex portion is inclined outward by a certain angle, the middle of the lower molding cavity is provided with a flat convex surface 8, the shape and the size of the flat convex surface are both adapted to a cavity top plane 7 of the upper molding cavity, and the cavity bottom of the lower molding cavity is communicated with a vacuum air groove 9.

In the embodiment of the utility model, go up shaping die cavity week side along the uncovered direction of chamber top plane toward the outside angle of 45 degrees at the bottom of the chamber. Well below the 3.5D glass angle.

The embodiment of the utility model provides an in, go up and take shape and be equipped with the transition fillet between die cavity all sides and the chamber top plane, be equipped with the transition fillet on the straight turning corner in top of plano-convex surface.

In the embodiment of the present invention, the height of the flat convex surface is smaller than the height of the lower forming cavity.

In the embodiment of the present invention, the upper mold is fixedly provided with vertical guide posts 10 at four corners of the periphery of the convex portion, and the lower mold is provided with guide grooves 11 for embedding the guide posts at four corners of the periphery of the lower forming cavity.

The embodiment of the utility model provides an in, be equipped with the inside gas pocket of a plurality of between the chamber end of the die cavity that takes shape down and the vacuum gas groove, the inside gas pocket of a plurality of is used for communicateing at the bottom of the chamber of die cavity that takes shape down and vacuum gas groove.

In the embodiment of the utility model, the lower mould adopts graphite material to make, and there is inside gas pocket inside it.

In an embodiment of the present invention, the shape and size of the plano-convex surface are the same as the cavity top plane.

The working principle of the 3.5D glass hot-pressing and hot-absorbing forming die structure is as follows: the flat glass 12 is placed on the plane convex surface of the lower forming cavity to ensure the alignment of the glass center and the mold center. After the mold and the glass are assembled (the upper mold and the lower mold are closed), the glass is put into a forming machine and heated by raising the temperature one by one. As the temperature increases, the glass gradually softens and as the upper mold pressure increases, the glass is pre-pressed into place, as shown in fig. 5. At this time, the lower mold and the glass form a closed space. The vacuum is turned on and the glass is heat-sucked into place through the vacuum grooves and internal air holes of the lower mold, as shown in fig. 6. In the process, due to the double effects of the upper die pressing and the lower die pressing and the vacuum adsorption force of the lower die, the four corners of the material are pulled very little, and the splayed impression phenomenon caused by the material pulling problem is effectively solved. And the production process is simple, the period is short, the efficiency is high, and the product strength is high.

The utility model is not limited to the above best mode, and any person can obtain the 3.5D glass hot-pressing and hot-absorbing forming die structure of other various forms under the enlightenment of the utility model. All the equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims

1. The utility model provides a 3.5D glass hot pressing hot-forming die structure, includes the last mould that has last shaping die cavity and the lower mould of shaping die cavity down, its characterized in that: the upper die is fixedly provided with a convex part used for pressing into a lower forming cavity, the peripheral side edge of the upper forming cavity in the middle of the convex part is inclined outwards for a certain angle, the middle part of the lower forming cavity is provided with a flat convex surface of which the shape and the size are matched with the top plane of the upper forming cavity, and the bottom of the lower forming cavity is communicated with the vacuum air groove.

2. The 3.5D glass hot pressing and hot suction molding die structure according to claim 1, characterized in that: the peripheral edge of the upper forming cavity is inclined outward by 45 degrees along the direction from the cavity top plane to the cavity bottom opening.

3. The 3.5D glass hot pressing and hot suction molding die structure according to claim 1, characterized in that: transition fillets are arranged between the peripheral side edges of the upper forming die cavity and the top plane of the upper forming die cavity, and transition fillets are arranged at the right corners of the top of the flat convex surface.

4. The 3.5D glass hot pressing and hot suction molding die structure according to claim 1, characterized in that: the height of the plane convex surface is less than that of the lower forming cavity.

5. The 3.5D glass hot pressing and hot suction molding die structure according to claim 1, characterized in that: go up the mould and set firmly vertical guide post on four corners of convex part periphery, the lower mould is equipped with the guide way that is used for the guide post embedding on four corners of lower shaping die cavity periphery.

6. The 3.5D glass hot pressing and hot suction molding die structure according to claim 1, characterized in that: a plurality of internal air holes are arranged between the cavity bottom of the lower forming cavity and the vacuum air groove and are used for communicating the cavity bottom of the lower forming cavity with the vacuum air groove.

7. The 3.5D glass hot pressing and hot suction molding die structure according to claim 1, characterized in that: the lower die is made of graphite materials, and internal air holes are formed in the lower die.

8. The 3.5D glass hot pressing and hot suction molding die structure according to claim 1, characterized in that: the shape and size of the plano-convex surface are the same as the cavity top plane.