Forming production equipment for flexible glass by vertical down-drawing method

Abstract

The utility model relates to flexible glass vertical down-drawing forming production equipment which comprises a material carrying mechanism used for outputting a flow state glass tape, the material carrying mechanism, a stretching mechanism, a shaping mechanism and an annealing mechanism are connected in sequence, the stretching mechanism comprises a tension supporting roller set and a heating assembly, the tension supporting roller set is used for stretching and thinning the glass tape, and the heating assembly is used for heating the glass tape. The heating assembly is used for controlling the temperature of the glass tape in the process of stretching and thinning the glass tape by the tension supporting roller group; the tension supporting roller group comprises a plurality of horizontal tension supporting rollers which are vertically arranged in a staggered manner so as to form an S-shaped glass tape conveying path; the heating assembly comprises a plurality of heating elements which are arranged between every two adjacent tension supporting rollers or / and on the outer sides of the tension supporting rollers. According to the utility model, the temperature of the glass tape output by the material loading mechanism can be continued, temperature control and stretching thinning are carried out by the stretching mechanism, then cooling and shaping are carried out by the shaping mechanism, good consistency of crystal morphology, appearance and quality is ensured by the annealing mechanism, the problem of long time consumption caused by heating and stretching after cooling and shaping is avoided, and the effect of improving efficiency and quality is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of glass manufacturing in chemical, metallurgical, specifically relates to a kind of flexible glass vertical down-draw method forming production equipment. BACKGROUND

[0002] At present, ultra-thin flexible glass has been applied to mobile phones, tablet computers, electronic paper / electronic newspaper, organic thin-film solar cells, electronic wearable devices and other industries, and the demand is increasing.

[0003] Traditional ultra-thin flexible glass manufacturing is mostly based on secondary forming and chemical polishing and thinning, with a small part being primary forming. The primary forming production method includes float forming, overflow melting forming and slot down-draw forming.

[0004] Float forming mainly uses glass liquid to float on the surface of tin liquid and then perform thinning forming, which is a horizontal thinning forming method. It has high requirements on process and equipment and is difficult to produce. Overflow melting forming is a vertical thinning forming method. However, due to the great difficulty in controlling the production process of ultra-thin flexible glass and high technical requirements, the industrialization degree is not high.

[0005] Slot down-draw forming can produce glass strips with a thickness of less than 2mm. By optimizing the method and corresponding equipment disclosed in Chinese patent application CN118005270A, ultra-thin flexible glass can also be produced. However, according to the method and equipment disclosed in CN118005270A, after the slot discharge process, the strip-shaped glass liquid is directly sent into the shaping furnace and preliminarily formed by the shaping roller group to obtain a solid glass strip with a thickness of less than 2mm. Then, the solid glass strip is heated and softened again to be stretched and thinned to obtain an ultra-thin strip-shaped glass with a thickness meeting the requirements. However, after preliminary forming, the glass is heated and softened again to be stretched, which still belongs to twice forming to obtain ultra-thin flexible glass. The process is time-consuming, and the quality fluctuates due to temperature changes. The production equipment for vertically down-drawing ultra-thin flexible glass can be further improved and optimized. SUMMARY

[0006] To solve the above problems of the prior art, the utility model provides a flexible glass vertical down-draw forming production equipment to avoid the problems of long process time and poor quality stability in the current vertical down-draw method for manufacturing ultra-thin flexible glass, and achieves the effect of increasing efficiency and improving quality.

[0007] To solve the above problems, the utility model adopts the following technical solutions:

[0008] The flexible glass vertical down-draw forming production equipment comprises a material carrying mechanism for outputting a flow glass ribbon, a stretching mechanism, a shaping mechanism and an annealing mechanism connected in sequence behind the material carrying mechanism, the stretching mechanism comprises a stretching roller set and a heating assembly, and the stretching roller set is used for stretching and thinning the glass ribbon, and the heating assembly is used for controlling the temperature of the glass ribbon during the stretching and thinning of the glass ribbon by the stretching roller set.

[0009] Further to the above technical scheme, the stretching roller set comprises a plurality of stretching rollers, the axes of the plurality of stretching rollers are parallel and horizontally arranged, and the plurality of stretching rollers are vertically spaced and staggered to form an S-shaped glass ribbon conveying path.

[0010] Further, the heating assembly comprises a plurality of heating elements, and the length direction of the heating elements corresponds to the axial direction of the stretching rollers.

[0011] Further, the heating elements are arranged between adjacent two stretching rollers in the glass ribbon conveying path, and the heating elements are arranged adjacent to the outer sides of the stretching rollers.

[0012] Further, the heating elements arranged between the adjacent two stretching rollers are two and oppositely arranged.

[0013] Further, the material carrying mechanism comprises a material carrying device body, a discharge nozzle is formed in the lower end of the material carrying device body, the length direction of the discharge nozzle corresponds to the axial direction of the stretching rollers, and the uppermost one of the stretching rollers is located directly below the discharge nozzle.

[0014] Further, a pair of horizontally opposite width expansion rollers are arranged below the discharge nozzle of the material carrying device body, the discharge nozzle is located between the two width expansion rollers, and the two width expansion rollers are located between the discharge nozzle and the uppermost one of the stretching rollers.

[0015] Further, an auxiliary roller is arranged adjacent to the outer side of each stretching roller.

[0016] Further, the upper edge of the lowermost one of the stretching rollers is higher than the lower edge of the upper one of the stretching rollers in the glass ribbon conveying path.

[0017] A pair of horizontally opposite width stabilization rollers are arranged below the lowermost one of the stretching rollers.

[0018] Further, the shaping mechanism is arranged below the width stabilization rollers, and the annealing mechanism is arranged below the shaping mechanism; the shaping mechanism comprises a shaping furnace, and the annealing mechanism comprises an annealing furnace.

[0019] A partition plate is arranged between the width stabilization rollers and the shaping furnace, and between the shaping furnace and the annealing furnace, and a glass ribbon passage is formed in the partition plate.

[0020] Compared with the prior art, the flexible glass vertical down-draw forming production equipment has the following beneficial effects:

[0021] 1. The flexible glass vertical down-draw forming production equipment can continue the temperature output of the glass ribbon of the material carrying mechanism, controls the temperature and stretching thinning of the stretching mechanism, then performs cooling and shaping of the shaping mechanism, effectively maintains the physical form, finally guarantees the crystal form through the annealing mechanism, the appearance and quality consistency are good, the problem of long time consumption of the temperature cooling and shaping and then the temperature rising and stretching thinning process is avoided, the effect of increasing efficiency and quality is achieved.

[0022] 2. The flexible glass vertical down-draw forming production equipment, the stretching mechanism, the tensioning roller group and the heating assembly in the stretching mechanism effectively stretch and thin the glass ribbon while well controlling the temperature of the glass ribbon, and effectively improve the yield.

[0023] 3. The flexible glass vertical down-draw forming production equipment, the rotation speed of each tensioning roller group of the stretching mechanism is adjusted and matched, so that the glass of different types and thickness requirements can be applied, and the practicability is high. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic view of the flexible glass vertical down-draw forming production equipment of the embodiment;

[0025] Figure 2 is a schematic view of the material carrying mechanism in the embodiment;

[0026] Figure 3 is a schematic view of the stretching mechanism in the embodiment;

[0027] Figure 4 is a schematic view of the shaping and annealing mechanism in the embodiment;

[0028] The material carrying mechanism 1, the stretching mechanism 2, the shaping mechanism 3, the glass ribbon 4, the material carrying device feed pipe 101, the material carrying device body 102, the heat radiation device 103, the discharge nozzle 104, the width expansion roller 201, the first tensioning roller 202, the first auxiliary roller 203, the second tensioning roller 204, the second auxiliary roller 205, the third tensioning roller 206, the third auxiliary roller 207, the width stabilizing roller 208, the first heating element 209, the second heating element 210, the third heating element 211, the fourth heating element 212, the fifth heating element 213, the sixth heating element 214, the seventh heating element 215, the shaping furnace inlet partition plate 301, the shaping furnace outlet partition plate 302, the shaping furnace 303, the annealing furnace 5, the annealing furnace inlet partition plate 501, and the annealing furnace outlet partition plate 502. DETAILED DESCRIPTION

[0029] The specific implementation manner of the utility model will be further described in detail below in combination with the drawings.

[0030] Please refer to Figure 1 and Figure 3The flexible glass vertical down-draw forming production equipment of the specific embodiment comprises a carrier mechanism 1 for outputting a flow glass ribbon 4, a stretching mechanism 2, a shaping mechanism 3 and an annealing mechanism below connected in sequence behind the carrier mechanism 1, the stretching mechanism 2 comprises a stretching roller set and a heating assembly, the stretching roller set is used for stretching and thinning the glass ribbon 4, and the heating assembly is used for controlling the temperature of the glass ribbon 4 in the process of stretching and thinning the glass ribbon 4 by the stretching roller set.

[0031] The flexible glass vertical down-draw forming production equipment of the specific embodiment can continue the temperature of the glass ribbon 4 output by the carrier mechanism 1, first control the temperature and stretch and thin the glass ribbon 4 by the stretching mechanism 2, effectively maintain and control the temperature of the glass ribbon 4 in the process of stretching and thinning by the stretching roller set and the heating assembly of the stretching mechanism 2, then cool and shape the glass ribbon 4 by the shaping mechanism 3, and finally output the glass ribbon 4 after the annealing mechanism, so that the appearance and quality consistency are good, the process of cooling and shaping and then stretching and thinning is avoided, the process time is reduced, and the quality and efficiency are improved as a whole.

[0032] The stretching roller set comprises a plurality of stretching rollers, such as Figure 3 The specific embodiment shown in the figure comprises a first stretching roller 202, a second stretching roller 204 and a third stretching roller 206, the axes of the stretching rollers are parallel and horizontally arranged, and the stretching rollers are vertically spaced and staggered to form an S-shaped glass ribbon conveying path.

[0033] In this way, the first stretching roller 202, the second stretching roller 204 and the third stretching roller 206 are vertically arranged in a descending order, and the second stretching roller 204 and the third stretching roller 206 are arranged on the two sides of the first stretching roller 202 in the horizontal direction, so as to facilitate stretching and thinning of the glass ribbon 4 by the tension and speed difference between the stretching rollers, ensure the stretching effect, and facilitate arrangement of the heating assembly.

[0034] The heating assembly comprises a plurality of heating elements, and the length direction of the heating elements corresponds to the axial direction of the stretching rollers. In this way, the glass ribbon 4 can be effectively heated in the entire horizontal (width) direction, and the temperature control effect is ensured.

[0035] Specifically, heating elements are arranged between adjacent two stretching rollers in the glass ribbon 4 conveying path, and heating elements are also arranged adjacent to the outer side of each stretching roller, so that the temperature control effect can be ensured in each conveying link of stretching and thinning. As shown in Figure 3The embodiment shown has a first heating element 209, a second heating element 210, a third heating element 211, a fourth heating element 212, a fifth heating element 213, a sixth heating element 214 and a seventh heating element 215. The first heating element 209 is arranged adjacent to the outside of the first pulling roller 202, the second heating element 210 and the third heating element 211 are arranged on the upper and lower sides of the glass ribbon 4 between the first pulling roller 202 and the second pulling roller 204 respectively, the fourth heating element 212 is arranged adjacent to the outside of the second pulling roller 204, the fifth heating element 213 and the sixth heating element 214 are arranged on the upper and lower sides of the glass ribbon 4 between the second pulling roller 204 and the third pulling roller 206 respectively, and the seventh heating element 215 is arranged adjacent to the outside of the third pulling roller 206. In this way, two heating elements are arranged between two adjacent pulling rollers and are oppositely arranged, so that the two sides of the glass ribbon 4 can be heated respectively, further ensuring the temperature control effect.

[0036] Please refer to Figure 2 , the loading mechanism 1 comprises a loading device body 102, a loading device feed pipe 101 is arranged on the top of the loading device body 102, vertical nickel row radiation devices 103 are uniformly arranged on the side of the loading device body 102 to maintain the temperature of the glass liquid in the loading device body 102, and a discharge nozzle 104 in the form of a slit is arranged at the lower end of the loading device body 102.

[0037] Please refer to Figure 1 and Figure 3 , the length direction of the discharge nozzle 104 corresponds to the axial direction of the pulling roller, and the uppermost first pulling roller 202 is located directly below the discharge nozzle 104; a pair of horizontally opposite expansion rollers 201 that can approach and move away from each other are arranged below the discharge nozzle 104 of the loading device body 102, the discharge nozzle 104 is located between the two expansion rollers 201, and the two expansion rollers 201 are located between the discharge nozzle 104 and the uppermost first pulling roller 202.

[0038] An auxiliary roller that can approach and move away from each other is arranged adjacent to the outside of each pulling roller. As Figure 3 shown in the embodiment, a first auxiliary roller 203 is arranged adjacent to the outside of the first pulling roller 202 and located below the first heating element 209; a second auxiliary roller 205 is arranged adjacent to the outside of the second pulling roller 204 and located below the fourth heating element 212; and a third auxiliary roller 207 is arranged adjacent to the outside of the third pulling roller 206 and located above the seventh heating element 215. The expansion rollers 201 and the auxiliary rollers are mainly used for expanding the glass ribbon during plate guiding or when an abnormality occurs, and play a role in expanding and stabilizing the plate root. During normal production, they are in a state of not contacting the glass.

[0039] The upper edge of the third tensioning roller 206 is higher than the lower edge of the second tensioning roller 204; a pair of horizontally opposite stable amplitude rollers 208 that can approach and move away from each other are arranged below the third tensioning roller 206. In this way, the thinned glass ribbon 4 after stretching is facilitated to enter the stable amplitude rollers 208 stably, and the stable amplitude rollers 208 are used to position the glass ribbon after stretching and thinning, and assist the glass ribbon after stretching and thinning to enter the shaping mechanism 3 stably.

[0040] In the implementation, the flexible glass vertical down-drawing forming production equipment has a base frame (not shown in the figure) for carrying the material carrying mechanism 1, the stretching mechanism 2, etc. The two ends of each roller of the tensioning roller set and each heating element of the heating assembly are respectively connected to the base frame in a specific connection form which is the prior art and will not be described here.

[0041] Please refer to Figure 1 and Figure 4 , the shaping mechanism 3 is arranged below the stable amplitude rollers 208, and the annealing mechanism is arranged below the shaping mechanism 3; the shaping mechanism 3 includes a shaping furnace 303, and the annealing mechanism includes the annealing furnace 5. In the use process, the stretching mechanism 2 effectively maintains and controls the temperature of the glass ribbon 4 in the stretching and thinning process through the tensioning roller set and the heating assembly, and outputs to the shaping mechanism 3 for cooling and shaping, which can effectively maintain the physical form, and finally the crystal form is effectively guaranteed through the annealing mechanism, and the appearance and quality consistency of the produced glass ribbon are good.

[0042] The shaping furnace inlet partition plate 301 is arranged between the stable amplitude rollers 208 and the shaping furnace 303, the shaping furnace outlet partition plate 302 is arranged below the shaping furnace 303, the annealing furnace inlet partition plate 501 is arranged between the shaping furnace outlet partition plate 302 and the annealing furnace 5, the annealing furnace inlet partition plate 501 is located directly below the shaping furnace outlet partition plate 302, the annealing furnace outlet partition plate 502 is arranged below the annealing furnace 5, and a glass ribbon passage is arranged in the middle of each partition plate. Through the arrangement of the partition plates, the draught is isolated, the atmosphere between the mechanisms is prevented from invading each other, and the heat preservation is facilitated.

[0043] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A flexible glass vertical pull-down forming production equipment, including a material carrier mechanism for outputting flowing glass ribbons, characterized in that: The material loading mechanism, stretching mechanism, shaping mechanism and annealing mechanism are connected in sequence. The stretching mechanism includes a stretching roller group and a heating component. The stretching roller group is used to stretch and thin the glass ribbon, and the heating component is used to control the temperature of the glass ribbon during the stretching and thinning process of the stretching roller group. The tension roller group includes multiple tension rollers, the axes of which are parallel and horizontally arranged, and the multiple tension rollers are spaced apart and staggered in the vertical direction to form an S-shaped glass belt conveying path; The heating assembly includes multiple heating elements. Heating elements are provided between two adjacent tension rollers on the glass belt conveying path, or / and heating elements are provided adjacent to the outer side of each tension roller.

2. The flexible glass vertical pull-down forming production equipment according to claim 1, characterized in that: The length direction of the heating element corresponds to the axial direction of the tension roller.

3. The flexible glass vertical pull-down forming production equipment according to claim 1, characterized in that: The heating elements between the two adjacent tension rollers are two in number and arranged opposite to each other.

4. The flexible glass vertical pull-down forming production equipment according to claim 1, characterized in that: The material loading mechanism includes a material loading device body. A discharge nozzle is provided at the lower end of the material loading device body. The length direction of the discharge nozzle corresponds to the axial direction of the support roller. The uppermost support roller is located directly below the discharge nozzle.

5. The flexible glass vertical pull-down forming production equipment according to claim 4, characterized in that: A pair of horizontally opposite expanding rollers are provided below the discharge nozzle of the material loading device body. The discharge nozzle is located between the two expanding rollers, and the two expanding rollers are located between the discharge nozzle and the uppermost tension roller.

6. The flexible glass vertical pull-down forming production equipment according to claim 1, characterized in that: Each tensioning roller has an auxiliary roller adjacent to its outer side.

7. The flexible glass vertical pull-down forming production equipment according to claim 6, characterized in that: The auxiliary roller is configured to be able to approach and move away from the adjacent tension roller.

8. The flexible glass vertical pull-down forming production equipment according to claim 1, characterized in that: The upper edge of the bottommost tension roller is higher than the lower edge of the previous tension roller on the glass belt conveyor path; Below the lowest tension roller, there is a pair of horizontally opposing stabilizing rollers.

9. The flexible glass vertical pull-down forming production equipment according to claim 8, characterized in that: The shaping mechanism is located below the stabilizing roller, and the annealing mechanism is located below the shaping mechanism; the shaping mechanism includes a shaping furnace, and the annealing mechanism includes an annealing furnace.

10. The flexible glass vertical pull-down forming production equipment according to claim 9, characterized in that: A partition plate is provided between the stabilizing roller and the setting furnace, and between the setting furnace and the annealing furnace. A glass strip passage is provided on the partition plate.

Images