CN215039402U

CN215039402U - Glass body mould for thermoplastic material forming

Info

Publication number: CN215039402U
Application number: CN202121245769.1U
Authority: CN
Inventors: 岳广全; 张浩轩; 李哲夫; 满珈诚; 潘利剑; 刘卫平; 崔仕海
Original assignee: Donghua University
Current assignee: Donghua University
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2021-12-07
Anticipated expiration: 2031-06-04

Abstract

The utility model discloses a glass body mould for thermoplastic material forming, which comprises an upper mould and a lower mould positioned below the upper mould, wherein the upper mould and the lower mould are both made of reinforced glass materials; heating parts are arranged in the upper die and the lower die; the lower end surface of the upper die and the upper end surface of the lower die are matched in shape to form a pressing molding surface, and heat radiation generated by the heating component penetrates through the pressing molding surface. The utility model discloses be fit for being applied to intermittent type nature production or the longer process flow of time interval, along with stopping along with using, avoided the defect that metal mold need preheat in advance.

Description

Glass body mould for thermoplastic material forming

Technical Field

The utility model relates to a material forming die field specifically is a be used for fashioned vitreous mould of thermoplastic material.

Background

In the field of thermoplastic materials, metal molds, including hot press molds, injection molds, and the like, are used for molding and manufacturing materials. In molding, the most used molding dies generally employ a process of heating a metal die to a certain temperature to soften a thermoplastic material, and then pressing, cooling and molding the material through the die, which is very suitable for continuous production. However, for the process with longer intermission time, the serious waste of energy can be caused by keeping the metal mold heated for a long time, and the defects of uneven heating, slow temperature rise and the like exist in the instantaneous heating. Therefore, for the thermoplastic material with the melting temperature below the medium-low temperature, a heating mold with a heating speed block, long intermittent time and continuous stop is more suitable to be developed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a be used for fashioned vitreous mould of thermoplastic material is fit for being applied to intermittent type nature production or the longer technological process of time interval, along with stopping along with using, has avoided the defect that metal mold need preheat in advance.

In order to achieve the above object, the utility model provides a following technical scheme: a vitreous mold for molding of thermoplastic material, comprising:

the upper die and the lower die are both made of tempered glass materials;

heating parts are arranged in the upper die and the lower die;

the lower end surface of the upper die and the upper end surface of the lower die are matched in shape to form a pressing molding surface, and heat radiation generated by the heating component penetrates through the pressing molding surface.

Preferably, the heating parts are uniformly arranged inside the upper die and the lower die side by side, and two ends of the heating parts extend out of the side walls of the upper die and the lower die.

Preferably, both ends of the heating member are respectively connected with the wiring boards at the side parts of the upper die and the lower die.

And additionally, cover plates are arranged on the upper side of the upper die and the lower side of the lower die.

Additionally, a heat insulation component is arranged between the cover plate and the upper die or the lower die.

Preferably, the heat insulating member is a tin foil.

Preferably, the heating parts in the upper die and the lower die are arranged in a staggered mode.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) by using the tempered glass as the mold body instead of the mold metal, the manufacturing cost is lower, the heating rate of the mold of the glass body is higher, and the middle material is heated more uniformly.

(2) The heating of the die is simpler, and the heating control of all heating parts can be realized by single power supply control;

(3) the cooling speed of the die is higher than that of the traditional metal die, so that the production time is saved, and the production efficiency is improved.

(4) The mold is more suitable for being applied to the process flow with intermittent production or longer time interval, and can be used after being stopped, thereby avoiding the defect that the metal mold needs to be preheated in advance.

Drawings

Fig. 1 is a schematic view of the overall structure of the mold of the present invention;

fig. 2 is a schematic structural view of the lower mold of the present invention;

fig. 3 is a schematic view of the forming of the thermoplastic sheet of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-3, the present invention relates to a vitreous mold for molding of thermoplastic material, comprising:

go up mould 3 and lower mould 4 that is located mould 3 below, last mould 3 and lower mould 4 make by the toughened glass material, last mould 3 and lower mould 4 inside all be provided with heating part 5, the last terminal surface of mould 3 and the last terminal surface shape of lower mould 4 match and form and press the profile, the thermal radiation that heating part 5 produced pass this and press the profile, the toughened glass material has good intensity, and the efficiency of heating is higher moreover, can adopt the thermal radiation to heat the material between last mould 3 and lower mould 4, of course, the last mould 3 that adopts the toughened glass material and the cooling of lower mould 4 are also very fast.

As an embodiment, the heating member 5 is disposed in a circular hole inside the upper mold 3 and the lower mold 4, and the heating member 5 may be a heating tube or a heating wire.

Wherein, the heating block 5 of going up mould 3 and the inside of lower mould 4 all be dislocation height and arrange, more be favorable to going up the heating of mould 3 and lower mould 4, the structure is compacter.

Simultaneously, for the installation of convenient heating block 5, heating block 5 evenly set up side by side inside last mould 3 and lower mould 4, and the both ends of heating block 5 stretch out the lateral wall of last mould 3 and lower mould 4, and the both ends of heating block 5 link to each other with the wiring board 6 of

last mould

3 and 4 lateral parts of lower mould respectively, can unify through wiring board 6 and connect all heating blocks 5 like this, realize the heating control of single power control alright realization all heating blocks.

As another embodiment, the cover plate 1 is installed on the upper side of the upper die 3 and the lower side of the lower die 4, the cover plate 1 plays a role of protecting the die, and meanwhile, the cover plate is used as a stress surface in the pressing process, so that the strength of the whole die is improved.

In order to prevent the surface temperature of the upper die 3 and the lower die 4 from being too high, a heat insulating member 2 is provided between the cover plate 1 and the upper die 3 or the lower die 4. Preferably, the heat insulating member 2 is a tin foil, which is inexpensive and can be arranged in multiple layers on the surfaces of the upper mold 3 and the lower mold 4.

As a specific example:

as shown in fig. 3, a sheet of thermoplastic material is used to form the corrugated sheet as shown.

First, several sheets of thermoplastic material are prepared, the thickness of the sheets should not be too thick, and the thickness is controlled to be 0.5-3 mm. And the upper die 3 and the lower die 4 are respectively arranged on the upper table surface and the lower table surface of the press.

The mold was opened to a 5cm gap and a flat thermoplastic sheet was placed between the upper and

lower molds

3 and 4.

When the power supply is switched on, the heating component 5 starts to be electrified and heated, the heat radiation penetrates through the upper die 3, and the glass body of the lower die 4 directly acts on the thermoplastic flat plate.

The thermoplastic flat plate starts to soften when heated, and when the flat plate is obviously softened and deformed, the press acts, the upper die and the lower die are combined, and the pressure is kept at 2-10 mpa.

The heating power was turned off and the mold started to cool and held for 2 min.

Next, the mold is opened and the article is removed to obtain a wavy thermoplastic sheet as shown in FIG. 3.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the description of such combinations is not exhaustive in the present specification only for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A vitreous mold for molding of thermoplastic material, comprising:

the device comprises an upper die (3) and a lower die (4) positioned below the upper die (3), wherein the upper die (3) and the lower die (4) are both made of tempered glass materials;

heating parts (5) are arranged in the upper die (3) and the lower die (4);

the lower end surface of the upper die (3) is matched with the upper end surface of the lower die (4) in shape to form a pressing molded surface, and the heat radiation generated by the heating component (5) penetrates through the pressing molded surface.

2. Vitreous mould for the moulding of thermoplastic materials, according to claim 1, characterized in that: heating block (5) evenly set up side by side inside last mould (3) and lower mould (4), and the both ends of heating block (5) stretch out the lateral wall of going up mould (3) and lower mould (4).

3. Vitreous mould for the moulding of thermoplastic materials, according to claim 2, characterized in that: and two ends of the heating component (5) are respectively connected with the wiring boards (6) at the side parts of the upper die (3) and the lower die (4).

4. Vitreous mould for the moulding of thermoplastic materials, according to claim 1, characterized in that: the upper die (3) and the lower die (4) are provided with cover plates (1).

5. Vitreous mould for the moulding of thermoplastic materials, according to claim 4, characterized in that: and a heat insulation component (2) is arranged between the cover plate (1) and the upper die (3) or the lower die (4).

6. Vitreous mould for the moulding of thermoplastic materials, according to claim 5, characterized in that: the heat insulation component (2) is tin foil.

7. Vitreous mould for the moulding of thermoplastic materials, according to claim 2, characterized in that: the heating parts (5) in the upper die (3) and the lower die (4) are arranged in a staggered mode.