CN-122010391-A - Precise thermal control forming equipment for glass container and preparation method

Abstract

The invention relates to the technical field of glass product forming and manufacturing, and discloses precision thermal control forming equipment for glass products, which comprises a forming host machine and is characterized by further comprising an infrared gob temperature control system, an embedded mould active temperature control system and an embedded mould active temperature control system, wherein the infrared gob temperature control system is integrated on the forming host machine and is configured on a conveying path of gobs of glass and used for carrying out non-contact radiation heating and temperature homogenization on the gobs, and the embedded mould active temperature control system is embedded with a heat exchange element network which is connected to an external program temperature control device and used for carrying out independent temperature control on different areas of the mould. The invention systematically solves the difficult problem of forming the large-size special-shaped amber glass bottle by integrating three systems of infrared gob precise temperature control, embedded mould active temperature control and full-flow atmosphere protection and matching with corresponding precise preparation technology, and provides an effective technical scheme for producing high-quality special glass packaging containers.

Inventors

• CAO XIN
• YANG YONG
• HU WENTAO
• PENG SHOU
• LI QING
• SHI LIFEN
• ZHOU GANG
• WANG PENG
• ZHANG XIAOYU
• TENG FEI
• WANG PINGPING
• GAO QIANG

Assignees

• 中建材玻璃新材料研究院集团有限公司

Dates

Publication Date

20260512

Application Date

20260123

Claims (10)

1. 1. The precision thermal control forming equipment for the glass container comprises a forming host machine and is characterized by further comprising the following systems integrated in the forming host machine: The infrared gob temperature control system is arranged on the conveying path of the glass gob and is used for carrying out non-contact radiation heating and temperature homogenization on the gob; The embedded active temperature control system of the mold is characterized in that a heat exchange element network is embedded in the mold, and the heat exchange element network is connected to an external program temperature control device and is used for independently controlling the temperature of different areas of the mold; a sealed atmosphere protection system for forming and maintaining a protective atmosphere at least a portion of the forming station.
2. 2. The precision thermal control forming apparatus of glass containers of claim 1, wherein the infrared gob temperature control system comprises at least one first band heating unit for integrally heating the gob and at least one second band heating unit for temperature homogenizing the gob surface layer.
3. 3. The glass container precision thermal control forming apparatus of claim 1, wherein a surface of a mold cavity of the mold active temperature control system is provided with a thermal barrier coating.
4. 4. The precision thermal control forming apparatus of glass containers of claim 1, wherein the heat exchange element is a micro heat pipe, a micro runner, or a combination thereof.
5. 5. The precision thermal control forming apparatus of glass containers of claim 1, wherein the external program temperature control device of the embedded mold active temperature control system comprises at least two independent temperature control loops for applying different temperature control strategies to different functional areas of the mold, respectively.
6. 6. The precision thermal control forming apparatus for glass containers as defined in claim 1 wherein the sealed atmosphere protection system comprises a sealed enclosure covering at least the droplet receiving and blow forming stations and an inert gas supply.
7. 7. The precision thermal control forming apparatus for glass containers according to claim 1, wherein the forming host is a rotary-disk bottle making machine or a determinant bottle making machine.
8. 8. A method for producing a glass container using the glass container precision thermal control molding apparatus according to any one of claims 1 to 7, comprising the steps of: s1, melting, clarifying and homogenizing a glass batch to obtain glass liquid; s2, forming a gob from the glass liquid, and regulating and controlling the temperature of the gob by the infrared gob temperature control system in the gob conveying process; S3, sending the regulated and controlled gob into a mould, regulating and controlling a mould temperature field by utilizing the embedded mould active temperature control system under the protective atmosphere provided by the sealed atmosphere protection system, and forming the gob into a product through a blowing process; And S4, annealing the molded product.
9. 9. The method according to claim 8, wherein in the step S2, the temperature control includes heating the gob integrally by the first band of radiation and then homogenizing the surface layer of the gob by the second band of radiation.
10. 10. The method according to claim 8, wherein in step S3, the controlling of the temperature field of the mold includes actively cooling the portion of the mold corresponding to the thick-wall region of the product and actively maintaining the temperature of the portion corresponding to the thin-wall region or the structural feature line of the product according to the three-dimensional geometric model of the product.

Description

Precise thermal control forming equipment for glass container and preparation method Technical Field The invention relates to the technical field of glass product forming and manufacturing, in particular to precise thermal control forming equipment for producing amber glass bottles and a corresponding preparation method. Background Amber glass bottle is widely used in the fields of high-end wine, cosmetics, medicines and chemical reagent packaging because of its excellent light-proof performance, attractive appearance and good chemical stability. With the development of market demands to individuation and high-end, higher demands are put on the design of glass bottles, and the demands of amber glass bottles with large size and complex special shapes (such as polygonal surfaces, asymmetry, curved surface transition and the like) are growing increasingly. However, when such products are produced using conventional processes and equipment, the following technical bottlenecks are faced: 1. the problem of uneven temperature of the gob is that for large-size gobs, because of large volume and small specific surface area, obvious temperature difference is easily generated between the inside of the gob and the surface layer and between the front end and the rear end during conveying and forming, and the uneven temperature can lead to inconsistent flow of the glass material in a die, thereby causing defects of uneven wall thickness, surface wrinkles, cold spots and the like; 2. the molding stability is poor, the mold structure of the complicated special-shaped glass bottle is complicated, the flowing path of the glass material is long and changeable, and the glass material is easy to generate severe friction with the mold wall, so that the surface is scratched and the glossiness is insufficient; 3. The temperature control problem caused by the material characteristics is that amber glass is used as strong-absorptivity colored glass, has the characteristics of high absorption and low transmission of infrared radiation, so that infrared heat is strongly absorbed by the surface layer of a gob in the traditional heating or temperature control process, and is difficult to effectively transfer to the core of the gob, so that an external heat and internal cooling temperature gradient structure is caused, and the defects of uneven wall thickness, surface stripes or shadows, partial filling dissatisfaction and the like of a bottle body are extremely easily caused in the forming process, and the optical quality, appearance and mechanical strength of a product are seriously influenced. The prior art usually carries out local adjustment by optimizing the temperature of a smelting furnace, adjusting the air cooling of a die or prolonging the whole annealing time and the like, but the means are' temporary treatment but temporary treatment, and cannot systematically and cooperatively solve the complex forming problem formed by interweaving three factors of material characteristics (amber), physical dimensions (large dimension) and geometric shapes (special-shaped), and lack of a precise and cooperative temperature control solution in the whole process from gob preparation to final shaping. Disclosure of Invention The invention aims to overcome the defects in the prior art and provide a precise thermal control forming device and a preparation method of an amber glass bottle, and the device and the method systematically solve the problems of difficult forming, surface defects, uneven color and luster and the like caused by uneven temperature of a material drop, unbalanced heat transfer and oxidative discoloration in the forming process in the production process of a large-size special-shaped amber glass bottle by an integrated precise thermal management system, so that the product yield, optical quality and mechanical strength are remarkably improved. The invention provides a precise thermal control forming device for amber glass bottles, which comprises a forming host (such as a rotary table type or a determinant bottle making machine) and three cooperative control systems integrated on the forming host: The infrared gob precise temperature control system is arranged between the outlet of the feed channel and the inlet of the forming die and is used for carrying out non-contact temperature control on the falling glass gob and comprises a short-wave near-infrared heating module, a middle-far-infrared soaking module and a closed-loop control unit based on thermal imaging; the embedded active temperature control system of the mold has a thermal barrier coating on the surface of a mold cavity, and a heat exchange element network connected to an external programming temperature control liquid circulation system is embedded in the mold body and is used for carrying out independent and dynamic temperature management on different areas of the mold; and the sealing atmosphere protection system is used for forming and maintaining inert gas pr