Forming device for curved glass
By adjusting the distribution spacing of the forming rollers in the glass forming device and using an arc-changing mechanism, the problem of optical distortion at the end of high-temperature curved glass is solved, achieving higher forming accuracy and optical quality.
Patent Information
- Application Number
- CN202422582654.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-10-24
AI Technical Summary
During the forming process of high-temperature curved glass, the ends of the glass produce a slight "outward-turning" defect under the action of gravity due to the discontinuous spacing between the flexible forming rollers, resulting in light distortion.
The spacing between the forming rollers at both ends of the glass conveying direction is set to be smaller than that in the middle position. The densely distributed second forming rollers are used to support the ends of the glass. The first forming rollers in the middle position form an intermediate supporting area, and the arc-changing mechanism is used to make the glass forming surface an arc surface.
It effectively weakens or eliminates the "outward-turning" deformation of the glass ends, reduces light distortion, and improves glass forming accuracy and optical effects.
Smart Images
Figure CN223386035U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of glass curved surface molding, in particular to a molding device for curved surface glass. Background Art
[0002] Glass curved surface forming is to heat the flat glass to a preset softening temperature, and then transport it to the forming device by the conveying component. Under the action of external force, the forming device switches from a flat state to an arc, and curls the glass into curved glass.
[0003] (See the appendix of the instruction manual Figure 1 ) Taking a forming device as a plurality of flexible forming rollers 100 as an example, the plurality of forming rollers are distributed at intervals in the conveying direction of the glass 200, and the flexible forming rollers are usually distributed on the supporting device according to a "fixed value" interval. There are flexible forming rollers under the glass, and the flexible forming rollers can be arc-changed along their own axial direction by the arc-changing mechanism of the forming device, so that the glass forming surface is switched from a flat state to a curved state with both sides bent, and then with the reciprocating rotation of the flexible forming rollers, the glass swings back and forth in the forming channel and is cooled and formed.
[0004] However, during the forming process and reciprocating swinging process, the ends of the high-temperature curved glass are distributed in a discontinuous interval between the flexible forming rollers. When the two ends of the arc are between the two flexible forming rollers, there is no support under the ends of the glass located between the two flexible forming rollers, resulting in a slight "outward-turning" and "reverse-warping" defect at the ends under the action of gravity. The intuitive reflection of this defect is that the reflection of the ends and the middle curved surface is curved, not smooth, and partially distorted under the illumination of light, which also produces light distortion. Utility Model Content
[0005] In order to overcome at least one of the defects described in the above-mentioned prior art, the utility model provides a forming device for curved glass, which sets the spacing between the second forming rollers at both ends of the glass conveying direction to be smaller than the spacing between the two first forming rollers in the middle position, so that during the forming and reciprocating swing of the glass, the arc-shaped end portions of the glass in the axial direction of the corresponding forming rollers are located in the area of the second forming rollers with relatively dense distribution, so that the glass is not easily deformed due to the large spacing.
[0006] The technical solution adopted by the present invention to solve the problem is:
[0007] A forming device for curved glass includes a forming roller assembly, wherein the forming roller assembly includes a plurality of first forming rollers and a plurality of second forming rollers, wherein the first forming rollers and the second forming rollers are flexible rollers, and the plurality of first forming rollers and the plurality of second forming rollers are spaced apart in a glass conveying direction, and at least two second forming rollers are distributed at both ends of the plurality of first forming rollers in the glass conveying direction; the interval between two adjacent second forming rollers is smaller than the interval between two adjacent first forming rollers; the plurality of first forming rollers and the plurality of second forming rollers jointly form a glass forming surface in the glass conveying direction; the first forming rollers and the second forming rollers are used to change the arc along their own axis so that the glass forming surface is an arc surface.
[0008] Furthermore, a plurality of the second forming rollers at the same end in the glass conveying direction are distributed at equal intervals.
[0009] Furthermore, the plurality of second forming rollers at the same end in the glass conveying direction are distributed at unequal intervals.
[0010] Furthermore, the distance between two adjacent second forming rollers of the plurality of second forming rollers at the same end in the glass conveying direction gradually decreases from close to the first forming roller to far away from the first forming roller; the maximum distance between two adjacent second forming rollers is less than the minimum distance between two adjacent first forming rollers.
[0011] Furthermore, the distance between two adjacent second forming rollers of the plurality of second forming rollers at the same end in the glass conveying direction gradually increases from close to the first forming roller to far away from the first forming roller; the maximum value of the distance between the second forming rollers is less than the minimum value of the distance between two adjacent first forming rollers.
[0012] Furthermore, the first forming roller and the second forming roller are both provided with a plurality of conveying wheels, and the plurality of conveying wheels are distributed at intervals in the axial direction of the first forming roller and the second forming roller.
[0013] Furthermore, the curved glass forming device includes a pressure roller assembly; the pressure roller assembly includes a plurality of pressure rollers, and the plurality of pressure rollers are distributed above the glass forming surface at intervals in the glass conveying direction.
[0014] Furthermore, the plurality of pressing rollers are arranged in a one-to-one correspondence between two adjacent first forming rollers and / or two adjacent second forming rollers.
[0015] Furthermore, outer surfaces of the first forming roller and the second forming roller are provided with a high temperature resistant material layer.
[0016] In summary, the present invention has the following technical effects:
[0017] Since the glass is supported at both ends of the conveying direction by the end forming areas formed by the second forming rollers distributed at both ends, and the middle section of the glass is supported by the middle forming area formed by the first forming rollers distributed in the middle position, in the reciprocating process of the glass, the curved end of the glass is always supported by multiple densely distributed second forming rollers. In this way, the arc of the glass end will not produce "drooping" deformation due to the large roller spacing, thereby achieving the purpose of greatly weakening or eliminating the defects of the glass end. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A schematic diagram of a glass structure with end defects formed by an existing curved glass forming device;
[0019] Figure 2 This is a schematic diagram of one structure of the molding device of the present invention;
[0020] Figure 3 This is another structural schematic diagram of the forming device of the present invention.
[0021] The meanings of the reference numerals are as follows: 10, first forming roller; 20, second forming roller; 30, conveying wheel; 40, glass. DETAILED DESCRIPTION
[0022] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0025] See Figure 1 、 Figure 2 as well as Figure 3The present invention discloses a device for forming curved glass, including a forming roller assembly, which includes a plurality of first forming rollers 10 and a plurality of second forming rollers 20. The plurality of first forming rollers 10 and the plurality of second forming rollers 20 may be spaced apart in the conveying direction of the glass 40. Specifically, in the conveying direction of the glass, the plurality of second forming rollers 20 may be distributed at both ends of the plurality of first forming rollers 10. In this way, the plurality of second forming rollers 20, the plurality of first forming rollers 10, the plurality of second forming rollers 20, the plurality of first forming rollers 10, and the plurality of second forming rollers 20 are distributed in the conveying direction of the glass, and the plurality of second forming rollers 20, the plurality of first forming rollers 10, and the plurality of second forming rollers 20 together form a forming surface of the glass 40 in the conveying direction of the glass.
[0026] It should be pointed out that the above-mentioned first forming roller 10 and second forming roller 20 can both be selected as flexible rollers, which can bend into an arc shape under the action of external force. In this way, when the curved glass 40 is formed, the arc changing mechanism provides an arc changing force to drive the first forming roller 10 and the second forming roller 20 to change arc along their own axis, and the formed forming surface of the glass 40 is a curved surface. That is, when the curved glass 40 is formed, arcs are formed at both axial ends of the forming rollers, that is, multiple first forming rollers 10 form an intermediate forming area, and two groups of multiple second forming rollers 20 located at both ends of the multiple first forming rollers 10 can form end forming areas.
[0027] In this embodiment, the spacing between the multiple first forming rollers 10 located in the middle in the glass conveying direction is set to be greater than the spacing between the multiple second forming rollers 20 located at both ends, that is, the multiple first forming rollers 10 located in the middle in the glass conveying direction are relatively sparsely distributed, while the multiple second forming rollers 20 located at both ends of the multiple first forming rollers 10 are relatively densely distributed. After the first forming rollers 10 and the second forming rollers 20 are arced along their own axial directions, the multiple second forming rollers 20 distributed in the end forming area are densely distributed at the ends in their own axial directions.
[0028] On the basis of the above structure, when the curved glass forming device of the present invention is used, after the glass 40 is heated in the heating furnace, it is transported to the forming roller assembly through the conveying structure, and the heated glass 40 is received by multiple second forming rollers, multiple first forming rollers and multiple second forming rollers. The arc changing mechanism drives the multiple second forming rollers, multiple first forming rollers and multiple second forming rollers of the multiple forming roller assemblies to change arcs in their own axial directions, so that the formed forming surface of the glass 40 is a circular arc surface, that is, the glass 40 changes arcs in its own width direction, and then the glass 40 swings back and forth during the rotation of the first forming roller 10 and the second forming roller 20, and is formed in the quenching process in cooperation with the wind nozzle of the wind grid assembly.
[0029] Since the glass 40 is supported at both ends of the conveying direction by the end forming areas formed by the second forming rollers 20 distributed at both ends, and the middle section of the glass 40 is supported by the middle forming area formed by the first forming rollers 10 distributed in the middle position, in this way, during the reciprocating process of the glass 40, the arc-shaped ends of the glass 40 in the axial direction of the forming rollers are always supported by multiple densely distributed second forming rollers, that is, in the end forming areas at both ends of the glass conveying direction, during the reciprocating process of the glass 40 forming, the two ends of the glass 40 are always in the area with the dense roller spacing, and are supported by the dense second forming rollers 20, so that the glass 40 will not produce "outward-turning" deformation due to the large roller spacing, thereby achieving the purpose of greatly reducing or eliminating the optical distortion of the glass 40 end.
[0030] Of course, when forming the curved glass 40, the arc-changing mechanism is required to drive the first forming roller 10 and the second forming roller 20 of the forming roller assembly to change their arc according to the curvature of the glass 40 to be formed. That is, the multiple first forming rollers 10 and the multiple second forming rollers 20 are linked by the arc-changing mechanism. After the multiple first forming rollers 10 and the multiple second forming rollers 20 change their arcs, the resulting forming surface of the glass 40 is a curved surface, so that the heated and softened glass 40 is formed into a curved surface. The arc-changing mechanism for changing the arc of the forming rollers of the curved glass 40 is an existing structure of existing curved glass 40 forming devices. Its specific structure and working principle belong to the prior art and are not protected here, so they will not be described in detail.
[0031] In this embodiment, the distance between two adjacent first forming rollers 10 is L1, the distance between two adjacent second forming rollers 20 close to the first forming roller 10 is Li, and the distance between two adjacent second forming rollers 20 away from the first forming roller 10 is Ln.
[0032] Further, see Figure 2 , multiple second forming rollers 20 at the same end in the glass conveying direction are distributed at equal intervals, that is, the above-mentioned Ln is equal to Li. When the glass 40 is reciprocatingly formed, when the end of the glass 40 is supported, the end is evenly distributed by multiple second forming rollers 20 arranged at equal intervals to form a uniform distribution of supporting points. Based on the structure of the arrangement method, the adjacent intervals of the multiple second forming rollers 20 in the same group can be set to a small interval.
[0033] Furthermore, the plurality of second forming rollers 20 at the same end in the glass conveying direction are distributed at unequal intervals, that is, the above-mentioned Ln is greater than Li, or Ln is less than Li.
[0034] See also Figure 3 When Ln is greater than Li, Ln is less than L1,
[0035] That is, the distance between two adjacent second forming rollers 20 of the multiple second forming rollers 20 at the same end in the glass conveying direction gradually decreases from close to the first forming roller 10 to far away from the first forming roller 10; the maximum distance between two adjacent second forming rollers 20 is less than the minimum distance between two adjacent first forming rollers 10. In this way, when the formed size of the glass 40 is large, the end of the glass 40 will be farther away than the middle position. In this way, the second forming rollers 20 with smaller spacing are distributed to a position far away from the first forming roller 10, and the second forming rollers 20 with relatively larger spacing are used for transition and connection, so that the glass 40 has a larger supporting surface for reciprocating swing, and the distribution spacing of the second forming rollers 20 of the transition connection is smaller than the distribution spacing of the first forming rollers in the middle position, which can also prevent sagging in the middle position and the end.
[0036] When Ln is greater than Li, Li is less than L1,
[0037] The spacing between adjacent second forming rollers 20 at the same end of the glass conveying direction gradually increases from closer to the first forming roller 10 to farther away from it; the maximum spacing between the second forming rollers 20 is less than the minimum spacing between adjacent first forming rollers 10. This allows the ends of the glass 40 to be closer to the center when the glass 40 is formed to a smaller size. This allows the second forming rollers 20, which are spaced closer together, to be closer to the first forming roller 10, reducing sagging defects during end forming.
[0038] In addition, the second forming roller 20 with a relatively large distribution spacing can be transitioned to the conveying component of the glass 40, so that the glass 40 has a larger transition conveying surface, and the distribution spacing of the second forming roller 20 is smaller than the distribution spacing of the first forming roller 10, which can also reduce the sagging that occurs when receiving the glass 40.
[0039] It should be noted that the spacing between the plurality of second forming rollers and the plurality of first forming rollers can be selected and adjusted according to the actual glass forming.
[0040] Of course, the structures of the first forming roller and the second forming roller are the same. In order to distinguish the forming rollers at different positions, the arrangement spacing of the forming rollers is different in this embodiment, so the first forming roller and the second forming roller are used for distinction.
[0041] Furthermore, a plurality of conveying wheels 30 are provided on the first forming roller 10 and the second forming roller 20 , and the plurality of conveying wheels 30 are distributed at intervals in the axial direction of the first forming roller 10 and the second forming roller 20 .
[0042] Since the first forming roller 10 and the second forming roller 20 are flexible rollers, and the flexible rollers are generally formed of silicone rubber, chloroprene rubber, etc. in the prior art, there will be greater resistance during the reciprocating process of the glass 40. Therefore, in this embodiment, multiple output wheels are provided in the axial direction of the flexible rollers to support the glass 40. During the reciprocating process of the glass 40, the output wheels are used to achieve rolling cooperation, so that the reciprocating process of the glass 40 is smoother.
[0043] Furthermore, the forming device of the curved glass includes a pressure roller assembly, which includes multiple pressure rollers, and the multiple pressure rollers are spaced apart above the forming surface of the glass 40 in the glass conveying direction. During the reciprocating swing of the glass 40, the first forming roller 10 and the second forming roller 20 below support it, and the multiple pressure rollers above are used for pressing and limiting. In this way, the multiple pressure rollers can cooperate with the glass 40 forming surfaces of the multiple first forming rollers 10 and the multiple second forming rollers 20 to form a forming channel for the glass 40 to swing back and forth. The glass 40 has upper and lower limits during the forming process, so that the forming accuracy of the glass 40 is higher.
[0044] Furthermore, multiple pressure rollers are arranged one by one at two adjacent first forming rollers 10, that is, there is a pressure roller above the two first forming rollers 10, and at the same time, there is a pressure roller above the two second forming rollers 20. In this way, the glass 40 forms multiple support points with the first forming rollers 10 and the second forming rollers 20 at the bottom, and forms multiple limit points with multiple pressure rollers at the top. In this way, the upper limit point and the lower support point can jointly form a forming point that contacts the glass 40 above and below, and the forming accuracy of the glass 40 is higher.
[0045] Of course, since it is a curved glass 40 that is being formed, the end position of the glass 40 requires a larger curvature. It is also possible to set multiple pressure roller structures above the multiple second forming rollers 20 located at the end of the glass 40, and cooperate with the curvature setting of the second forming rollers 20 after the arc is changed, so as to facilitate better forming of the curved surface of the glass 40.
[0046] There does not need to be a strict correspondence between the specific pressing rollers and the first forming rollers and the second forming rollers. According to the requirements of the forming process, the number and position of the upper pressing rollers can be changed under the premise of ensuring the accuracy of the forming surface. That is to say, multiple pressing rollers are correspondingly arranged above the glass 40 forming surface formed by multiple first forming rollers and multiple second forming rollers. The multiple pressing rollers can cooperate with the glass 40 forming surface to form a forming channel for the glass 40 to swing back and forth, so that the forming accuracy of the glass 40 is higher.
[0047] It should also be noted that, based on the structure that the first forming roller 10 and the second forming roller 20 are flexible rollers, in order to cooperate with the flexible deformation of the first forming roller 10 and the second forming roller 20, the pressure roller can also be set as a flexible roller.
[0048] Furthermore, the outer surfaces of the first forming roller 10 and the second forming roller 20 are provided with a high-temperature resistant material layer. Since the curved glass 40 is formed after the glass 40 is heated, the outer surfaces of the first forming roller 10 and the second forming roller 20 used to support the glass 40 are provided with a high-temperature resistant material layer. The high-temperature resistant material layer is in contact with the glass 40, thereby improving the service life of the first forming roller 10 and the second forming roller 20.
[0049] It should be noted that compared with directly using high-temperature resistant materials to make the first forming roller 10 and the second forming roller 20 structure, the cost of this application is lower by coating a layer of high-temperature resistant material on the outside of the forming roller structure made of ordinary materials.
[0050] Of course, the high-temperature resistant material layer can be Kevlar (aramid fiber material), a material commonly used in the glass forming industry, or other high-temperature resistant materials with similar performance in the prior art. Based on the structure of providing a conveyor wheel on the first and second forming rollers, the conveyor wheel can also be coated with the above-mentioned high-temperature resistant material layer.
[0051] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.
Claims
1. A device for forming curved glass, characterized in that: It includes a forming roller assembly, which includes a plurality of first forming rollers and a plurality of second forming rollers, the first forming rollers and the second forming rollers are flexible rollers, the plurality of first forming rollers and the plurality of second forming rollers are spaced apart in a glass conveying direction, and the plurality of first forming rollers are each provided with at least two second forming rollers at both ends of the glass conveying direction; the interval between two adjacent second forming rollers is smaller than the interval between two adjacent first forming rollers; the plurality of first forming rollers and the plurality of second forming rollers jointly form a glass forming surface in the glass conveying direction; the first forming rollers and the second forming rollers are used to change the arc along their own axis so that the glass forming surface is an arc surface.
2. The curved glass forming device according to claim 1, wherein: The plurality of second forming rollers at the same end in the glass conveying direction are distributed at equal intervals.
3. The curved glass forming device according to claim 1, wherein: The plurality of second forming rollers at the same end in the glass conveying direction are distributed at non-equidistant intervals.
4. The curved glass forming device according to claim 3, wherein: The distance between two adjacent second forming rollers of the plurality of second forming rollers at the same end in the glass conveying direction gradually decreases from close to the first forming roller to far away from the first forming roller; the maximum distance between two adjacent second forming rollers is less than the minimum distance between two adjacent first forming rollers.
5. The curved glass forming device according to claim 3, wherein: The distance between two adjacent second forming rollers of the plurality of second forming rollers at the same end in the glass conveying direction gradually increases from close to the first forming roller to far away from the first forming roller; the maximum value of the distance between the second forming rollers is less than the minimum value of the distance between two adjacent first forming rollers.
6. The curved glass forming device according to claim 1, wherein: The first forming roller and the second forming roller are both provided with a plurality of conveying wheels, and the plurality of conveying wheels are distributed at intervals in the axial direction of the first forming roller and the second forming roller.
7. The curved glass forming device according to any one of claims 1 to 6, characterized in that: The curved glass forming device comprises a pressing roller assembly; the pressing roller assembly comprises a plurality of pressing rollers, and the plurality of pressing rollers are distributed above the glass forming surface at intervals in the glass conveying direction.
8. The curved glass forming device according to claim 7, characterized in that: The plurality of pressing rollers are arranged in a one-to-one correspondence between two adjacent first forming rollers and / or two adjacent second forming rollers.
9. The curved glass forming device according to any one of claims 1 to 6, characterized in that: The outer surfaces of the first forming roller and the second forming roller are provided with a high temperature resistant material layer.