CN209065738U - Glass hot bending die - Google Patents

Abstract

The utility model relates to a glass hot bending die, which comprises a male die and a female die; the female die comprises a base, a boss is arranged on the base, a profiling groove is formed in the middle of the boss, and an annular frame is formed between the outer wall of the boss and the wall of the profiling groove; the boss is made of SiC-based complex phase ceramic; the male die is provided with a groove, the bottom wall of the groove is provided with a profiling block matched with the profiling groove, the height of the profiling block is smaller than the depth of the profiling groove, and the profiling groove is matched with the profiling block to form a cavity for hot bending forming of glass; an annular groove matched with the annular frame is formed between the inner wall of the groove and the outer wall of the contour block. The stress and the heat of the periphery of the glass are relatively more uniform in the hot bending process, the glass deformation is small, and the forming precision is higher.

Description

A kind of glass hot-bending die

Technical field

The utility model relates to glass processing field shaping technique more particularly to a kind of glass hot-bending dies.

Background technique

Traditional glass hot-bending die includes punch-pin 1 and cavity plate 2, as shown in Figure 1, punch-pin 1 is equipped with profiling block 11, cavity plate 2 be equipped with the matched imitation-shaped groove 21 of profiling block 11, after molding between imitation-shaped groove 21 and profiling block 11 formed be used for glass bending Molding type chamber.When heat-bending glass, glass 3 is placed on profiling block 11, the two-dimensional of glass 3 is greater than the two of profiling block 11 Size is tieed up, 2 lower surface of cavity plate pushes the periphery of glass 3 and conducts heat to glass 3, until glass 3 is heated to its softening temperature Near, glass 3 is pressed into shaping finished product in type chamber.Due to pushing glass 3 using the entire lower surface of cavity plate 2, in cavity plate 2 and convex The installation of mould 1 cooperation ideally, due to contact area is big and uniformly thus 3 periphery stress of glass, be heated evenly, glass 3 It is not likely to produce deformation, formed precision is high.However process and install due to mold and there is certain error, lead to cavity plate 2 and punch-pin 1 Assembly ideal state can not be completely in when molding, when cavity plate 2 pushes glass 3,3 periphery stress of glass, uneven heating are even, lead It causes to be easy to produce deformation in forming process, influences formed precision.

Utility model content

Based on this, it is necessary to provide a kind of glass hot-bending die for improving heat-bending glass formed precision.

A kind of glass hot-bending die, including punch-pin and cavity plate；

The cavity plate includes pedestal, and boss is provided on the pedestal, offers imitation-shaped groove in the middle part of the boss, described convex Ring frame is formed between the outer wall of platform and the cell wall of the imitation-shaped groove；The material of the boss is SiC base complex phase ceramic；

It is arranged fluted on the punch-pin, the bottom wall of the groove is equipped with the profiling for cooperating with the imitation-shaped groove Block, the height of the profiling block are less than the depth with the imitation-shaped groove, and the imitation-shaped groove is cooperatively formed with the profiling block and is used for The molding type chamber of glass bending；It is formed between the inner wall of the groove and the outer wall of the profiling block for matching with the ring frame The annular groove of conjunction.

The course of work of the utility model hot bending shape bend glass are as follows: flat glass is placed on profiling block, glass Two-dimensional is greater than the two-dimensional of profiling block, and the lower surface of ring frame pushes the periphery of flat glass and conducts heat to plane Glass, until glass is heated near its softening temperature, flat glass is pressed into molding bend glass finished product in type chamber.With tradition Hot bending die using entire cavity plate lower surface carry out heat transfer mode of transfer force compare, when mold process and install there are errors to cause When cavity plate and punch-pin can not be in assembly perfect conditions when molding, since the perimeter dimensions of ring frame are smaller, thus glass periphery Stress is heated relatively more evenly, and glass deformation is small, and formed precision is higher.

Due to being typically necessary higher temperature and biggish pressure when the hot bending die of glass forms, ring frame heat transfer is used instead After power transmission, since the contact area of ring frame and glass is less than the contact area of traditional cavity plate and glass, thus its heat transfer is passed Power ability is not so good as traditional cavity plate, prepares ring frame according to traditional metal material, metal heat transfer is slower, and thermal expansion coefficient Coefficient is big, and thermal shock performance is poor, easily deforms at high temperature, will lead to glass play and deformation during hot bending, causes into The shape radian of product glass generates deviation, influences formed precision.Ring frame is prepared according to graphite material, since graphite material is anti- Oxidisability is poor, oxidizable under high temperature, and die life is caused to shorten, and the wearability of graphite jig and cold & heat fatigue resisting performance are poor Also it will affect the formed precision of finished glass.Compared with graphite material, SiC base complex phase ceramic have better antioxygenic property, Wearability and cold & heat fatigue resisting performance, die life is higher and the formed precision of finished glass is higher.

The utility model prepares ring frame using SiC base complex phase ceramic, compared with traditional metal material, SiC base complex phase Ceramics have better thermal conductivity, and heat transfer block is heated evenly, and thermal expansion coefficient is smaller, wearability and cold & heat fatigue resisting It can will not cause glass play and deformation during good hot bending, ensure that the machining accuracy during hot bending shape.

The outer wall of the ring frame can be bonded with the external groove sidevall of the annular groove in one of the embodiments,.

The outer wall of the profiling block includes imitation profile and four sides, the profiling bread in one of the embodiments, Include square face and with the one-to-one four profiling cambered surfaces in four sides, the one of one end of the profiling cambered surface and the square face The other end of side transition connection, the profiling cambered surface is connected with one end transition of corresponding side, the side it is another End is located on the bottom wall of the groove；Four profiling cambered surfaces are relatively described rectangular towards the same side bending；It is described imitative The bending radius of shape cambered surface is less than 1000mm.

The pedestal is an integral molding structure with the boss in one of the embodiments,.

The material of the punch-pin is SiC base complex phase ceramic in one of the embodiments,.

SiC base complex phase ceramic is two phase ceramics that SiC and Si is formed in one of the embodiments,.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the glass hot-bending die of traditional technology；

Fig. 2 is the schematic front view of the cavity plate of the glass hot-bending die of an embodiment；

Fig. 3 is the schematic top plan view of the cavity plate of the glass hot-bending die of an embodiment；

Fig. 4 is the diagrammatic cross-section in the direction cavity plate A-A in Fig. 3；

Fig. 5 is the schematic front view of the punch-pin of the glass hot-bending die of an embodiment；

Fig. 6 is the schematic top plan view of the punch-pin of the glass hot-bending die of an embodiment；

Fig. 7 is the diagrammatic cross-section in the direction punch-pin B-B in Fig. 6.

Specific embodiment

The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model, It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms in fact It is existing, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes public affairs to the utility model The understanding for opening content is more thorough and comprehensive.

It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to To another element or it may be simultaneously present centering elements.

Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" includes Any and all combinations of one or more related listed items.

The glass hot-bending die of one embodiment, including cavity plate 10 and punch-pin 20；

Fig. 2 ~ Fig. 4 is please referred to, cavity plate includes pedestal 130, and boss 100 is provided on pedestal, is offered in the middle part of boss 100 imitative Shape slot 110 forms ring frame 120 between the outer wall of boss 100 and the cell wall of imitation-shaped groove 110；Wherein, the material of boss 100 is SiC base complex phase ceramic；

Fig. 5 ~ Fig. 7 is please referred to, is arranged fluted 200 on punch-pin 20, the bottom wall of groove 200, which is equipped with, to be used for and imitation-shaped groove The profiling block 210 of 110 cooperations, the height of profiling block 210 are greater than the depth of annular groove 110, and imitation-shaped groove 110 is matched with profiling block 210 It closes to be formed and is used for the molding type chamber of glass bending；Between the inner wall of groove 200 and the outer wall of profiling block 210 formed for annular The annular groove 220 that frame 120 cooperates.

The course of work of the utility model hot bending shape bend glass are as follows: flat glass is placed on profiling block 210, glass Two-dimensional be greater than the two-dimensional of profiling block 210, the periphery that the lower surface of ring frame 120 pushes flat glass simultaneously conducts heat Measure to flat glass, until glass is heated near its softening temperature, flat glass be pressed into type chamber form bend glass at Product.Compared with traditional hot bending die carries out heat transfer mode of transfer force using entire cavity plate lower surface, processes and install when mold and deposit When can not be in assembly perfect condition when error leads to cavity plate and punch-pin molds, since the perimeter dimensions of ring frame 120 are smaller, Thus glass periphery stress is heated relatively more evenly, and glass deformation is small, and formed precision is higher.

Due to the small curved glass of hot bending die molding bending radius of glass be constantly typically necessary higher temperature and compared with Big pressure, after using the heat transfer power transmission of ring frame 120 instead, since the contact area of ring frame 120 and glass is less than traditional cavity plate With the contact area of glass, thus its conduct heat force transfer capacity be not so good as traditional cavity plate, prepare ring according to traditional metal material Shape frame 120, metal heat transfer is slower, and thermal expansion coefficient coefficient is big, and thermal shock performance is poor, easily deforms at high temperature, hot bending It will lead to glass play and deformation in the process, cause the shape radian of finished glass to generate deviation, influence formed precision；According to Graphite material prepares ring frame 120, oxidizable under high temperature since graphite material inoxidizability is poor, and die life is caused to shorten, and The poor formed precision that also will affect finished glass of wearability and cold & heat fatigue resisting performance of graphite jig.Also it will affect finished product glass The formed precision of glass.

The utility model prepares ring frame 120 using SiC base complex phase ceramic, and compared with traditional metal material, SiC base is multiple Phase ceramics have better thermal conductivity, and heat transfer block is heated evenly, and thermal expansion coefficient is smaller, and thermal shock ability is good, hot bending process In will not cause glass play and deformation, ensure that the machining accuracy during hot bending shape.Compared with graphite material, SiC base Complex phase ceramic has better antioxygenic property and thermal shock resistance, die life is higher and the formed precision of finished glass more It is high.

Preferably, pedestal 130 is an integral molding structure with boss 100.

In the present embodiment, the material of punch-pin 20 is also SiC base complex phase ceramic, glass upper and lower surface when guaranteeing molding It is heated consistent.

Traditional gel can be used in two phase ceramics of SiC base complex phase ceramic preferred SiC and Si composition, SiC base complex phase ceramic Gas phase siliconising sintering process forms after infusing film, and gas phase siliconising sintering process forms after traditional dry-pressing biscuit can also be used.

In the present embodiment, when cavity plate 10 and punch-pin 20 mold, the outer wall of boss 100 can be with the outer groove of groove 200 Wall fitting ensure that the stability that cavity plate 10 and punch-pin 20 mold, to not will lead to glass during further ensuring hot bending Glass play and deformation.

In the present embodiment, the outer wall of profiling block 210 includes imitation profile and four sides, imitation profile include square face and With the one-to-one four profiling cambered surfaces in four sides, one end of profiling cambered surface and a side transition of square face are connected, and are imitated The other end of shape cambered surface is connected with one end transition of corresponding side, and the other end of side is located on the bottom wall of groove；Four imitative Shape cambered surface is relatively rectangular towards same lateral bend；The bending radius of profiling cambered surface is less than 1000mm.Namely the utility model can be at The big curved glass of type curvature simultaneously can guarantee its brake forming precision.

In the present embodiment, the height of profiling block 210 is greater than the depth of annular groove 110, to guarantee that it is imitative that glass is placed in Not by the interference of 110 cell wall of annular groove on shape block 210.

The above is only the preferred embodiment of the application, not does any type of limitation to the application, although this Shen Please disclosed as above with preferred embodiment, however not to limit the application, any person skilled in the art is not taking off In the range of technical scheme, a little variation or modification are made using the technology contents of the disclosure above and is equal to Case study on implementation is imitated, is belonged in technical proposal scope.

Claims (6)

1. a kind of glass hot-bending die, which is characterized in that including punch-pin and cavity plate；

The cavity plate includes pedestal, and boss is provided on the pedestal, offers imitation-shaped groove in the middle part of the boss, the boss Ring frame is formed between outer wall and the cell wall of the imitation-shaped groove；The material of the boss is SiC base complex phase ceramic；

It is arranged fluted on the punch-pin, the bottom wall of the groove is equipped with the profiling block for cooperating with the imitation-shaped groove, institute The height for stating profiling block is cooperatively formed less than the depth with the imitation-shaped groove, the imitation-shaped groove and the profiling block for glass heat The type chamber of roll forming；The ring for cooperating with the ring frame is formed between the inner wall of the groove and the outer wall of the profiling block Shape slot.

2. glass hot-bending die as described in claim 1, which is characterized in that the outer wall of the ring frame can be with the annular The external groove sidevall of slot is bonded.

3. glass hot-bending die as claimed in claim 2, which is characterized in that the outer wall of the profiling block includes imitation profile and four A side, the imitation profile include square face and with the one-to-one four profiling cambered surfaces in four sides, the profiling cambered surface One end is connect with a side transition of the square face, the other end of the profiling cambered surface and one end transition of corresponding side It is connected, the other end of the side is located on the bottom wall of the groove；Four relatively described square faces of profiling cambered surface To same lateral bend；The bending radius of the profiling cambered surface is less than 1000mm.

4. glass hot-bending die as claimed in claim 3, which is characterized in that the pedestal and the boss are integrally formed knot Structure.

5. glass hot-bending die as claimed in claim 4, which is characterized in that the material of the punch-pin is SiC base complex phase ceramic.

6. glass hot-bending die as claimed in claim 5, which is characterized in that SiC base complex phase ceramic is two phase ceramics of SiC-Si.