Forming device for curved glass
By adjusting the distribution spacing of the forming rollers and setting a pressure roller assembly in the curved glass forming device, the problem of sagging glass edges is solved and high-precision curved glass forming is achieved.
Patent Information
- Application Number
- CN202422582640.X
- 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 curved glass forming process, the edges of the high-temperature curved glass sag and produce defects during the forming process and reciprocating swing process due to the discontinuous distribution of the spacing between the rigid forming rollers.
The spacing between the forming rollers at both ends of the glass conveying direction is set to be smaller than the spacing in the middle position, so that the curved edge of the glass is supported by the relatively densely distributed second forming rollers to form a dense edge forming area, and the middle section is supported by the sparsely distributed first forming rollers, which are limited in conjunction with the pressure roller assembly to ensure that the edge of the glass does not sag.
It effectively prevents the glass edge from sagging and deformation due to excessive roller spacing, and improves the forming accuracy and quality of curved glass.
Smart Images
Figure CN223386037U_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 attached manual Figure 2 ) Taking the forming device as a plurality of rigid 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 rigid forming rollers are usually distributed on the supporting device according to a "fixed value" interval. There are rigid forming rollers below the glass, which cooperate with the pressure rollers 300 above the forming rollers to form a forming channel, and the rigid forming rollers can be switched from a flat state to a curved state of the forming channel by the arc changing mechanism of the forming device. Then, as the rigid forming rollers rotate back and forth, the glass swings back and forth in the forming channel and is cooled and formed.
[0004] However, during the forming process and reciprocating swing process, the ends of the high-temperature curved glass are distributed in a discontinuous interval between the rigid forming rollers. When the edges of the arc are between the two rigid forming rollers, the glass is located between the two rigid forming rollers without support, resulting in a slight droop of the edges under the action of gravity, which will cause defects on the edges of the curved glass product on both sides of the arc (see the attached instructions). Figure 1 ). 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 curved edge of the glass is supported by the area of the relatively densely distributed second forming rollers, so that the glass is not easily deformed to "sag" 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 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; and the plurality of first forming rollers and the plurality of second forming rollers jointly form a glass forming surface in the glass conveying direction.
[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 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.
[0013] 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.
[0014] Furthermore, outer surfaces of the first forming roller and the second forming roller are provided with a high temperature resistant material layer.
[0015] In summary, the present invention has the following technical effects:
[0016] Since the glass is supported at both ends of the conveying direction by the edge 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 edge of the glass is always supported by multiple densely distributed second forming rollers. In this way, the arc of the glass edge will not produce "drooping" deformation due to the large distance between the rollers, thereby achieving the purpose of greatly weakening or eliminating the defects of the glass edge. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic diagram of a glass structure with edge defects formed by an existing curved glass forming device;
[0018] Figure 2 It is a schematic structural diagram of an existing curved glass forming device;
[0019] Figure 3 This is a schematic diagram of one structure of the molding device of the present invention;
[0020] Figure 4 This is another structural schematic diagram of the forming device of the present invention.
[0021] The meanings of the reference numerals are as follows: 11, first forming roller; 12, second forming roller; 20, glass; 30, pressure roller. 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 4The utility model discloses a forming device for curved glass, including a forming roller assembly, which includes a plurality of first forming rollers 11 and a plurality of second forming rollers 12, and the plurality of first forming rollers 11 and the plurality of second forming rollers 12 can be spaced apart in the conveying direction of the glass 20. Specifically, in the conveying direction of the glass, the plurality of second forming rollers 12 can be distributed at both ends of the plurality of first forming rollers 11, so that the plurality of second forming rollers 12 are distributed in the conveying direction of the glass, the plurality of first forming rollers 11, the plurality of second forming rollers 12, and the plurality of second forming rollers 12. The plurality of first forming rollers 11 and the plurality of second forming rollers 12 jointly form a forming surface of the glass 20 in the conveying direction of the glass. It should be noted that the plurality of first forming rollers 11 form a middle forming area, and the two groups of the plurality of second forming rollers 12 located at both ends of the plurality of first forming rollers 11 can form an edge forming area.
[0026] In this embodiment, the spacing between the multiple first forming rollers 11 located in the middle in the glass conveying direction is set to be larger than the spacing between the multiple second forming rollers 12 located at both ends, that is, the multiple first forming rollers 11 located in the middle forming area in the glass conveying direction are relatively sparsely distributed, while the multiple second forming rollers 12 located in the edge forming area at both ends of the multiple first forming rollers 11 are relatively densely distributed.
[0027] On the basis of the above structure, when the curved glass forming device of the present invention is used, after the glass 20 is heated in the heating furnace, it is transported to the forming roller assembly through the conveying structure, and the heated glass 20 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 the conveying direction of the glass 20, so that the formed forming surface of the glass 20 is a circular arc surface, that is, the glass is arced in its own length direction, and then the glass 20 swings back and forth during the rotation of the first forming roller 11 and the second forming roller 12, and is formed during the quenching process in cooperation with the wind nozzle of the wind grid assembly.
[0028] Since the glass 20 is supported at both ends of the conveying direction by the edge forming areas formed by the second forming rollers 12 distributed at both ends, and the middle section of the glass 20 is supported by the first forming rollers 11 distributed in the middle forming area, during the reciprocating process of the glass 20, the curved edge of the glass 20 is always supported by multiple second forming rollers densely distributed in the edge forming area. In this way, the curved edge of the glass 20 will not produce "drooping" deformation due to the large roller spacing, thereby achieving the purpose of greatly weakening or eliminating the edge defects of the glass 20.
[0029] It should also be noted that since multiple second forming rollers 12 are distributed on the arc-shaped edge of the glass 20, the multiple second forming rollers 12 are densely distributed, and the glass 20 is formed during the reciprocating swinging process. The spacing between the relatively densely distributed second forming rollers 12 is densely distributed to match the reciprocating motion, and the supporting points are dense, so the edge of the glass 20 is not easily drooped and deformed between two supporting points.
[0030] Of course, when forming curved glass, an arc-changing mechanism is required to drive the first and second forming rollers of the forming roller assembly to change their arcs according to the curvature of the glass to be formed. That is, the multiple first and second forming rollers are linked by the arc-changing mechanism. After the multiple first and second forming rollers change their arcs, the resulting glass forming surface is a curved surface, so that the heated and softened glass is formed into a curved surface. The arc-changing mechanism for changing the arc of the forming rollers for curved glass is an existing structure of existing curved glass 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 11 is L1, the distance between two adjacent second forming rollers 12 close to the first forming roller 11 is Li, and the distance between two adjacent second forming rollers 12 away from the first forming roller 11 is Ln.
[0032] Further, see Figure 3 , multiple second forming rollers 12 at the same end in the glass conveying direction are evenly spaced, that is, the above-mentioned Ln is equal to Li. When the glass 20 is reciprocatingly formed, when the edge of the glass 20 is supported, the edge is evenly distributed by multiple second forming rollers 12 arranged at equal intervals to form a uniform distribution of supporting points. Based on the structure of the arrangement method, the adjacent spacing of the multiple second forming rollers 12 in the same group can be set to a small spacing.
[0033] Furthermore, the plurality of second forming rollers 12 at the same end in the glass conveying direction are distributed without spacing, that is, the above-mentioned Ln is greater than Li, or Ln is less than Li.
[0034] See also Figure 4 When Ln is greater than Li, Ln is less than L1,
[0035] That is, the distance between two adjacent second forming rollers 12 of the multiple second forming rollers 12 at the same end in the glass conveying direction gradually decreases from close to the first forming roller 11 to far away from the first forming roller 11; the maximum distance between two adjacent second forming rollers 12 is less than the minimum distance between two adjacent first forming rollers 11. In this way, when the formed size of the glass 20 is large, the edge of the glass 20 will be farther away than the middle position. In this way, the second forming rollers 12 with smaller spacing are distributed to the position far away from the first forming roller 11, and the second forming rollers 12 with relatively larger spacing are used for transition and support, so that the glass 20 has a larger supporting surface for reciprocating swing, and the distribution spacing of the second forming rollers 12 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 edge position.
[0036] When Ln is greater than Li, Li is less than L1.
[0037] The spacing between adjacent second forming rollers 12 at the same end of the glass conveying direction gradually increases from closer to the first forming roller 11 to farther away from it. The maximum spacing between the second forming rollers 12 is less than the minimum spacing between adjacent first forming rollers 11. This allows the edges of the glass 20 to be closer to the center when the glass 20 is formed to smaller dimensions. Therefore, distributing the second forming rollers 12, which are spaced closer together, closer to the first forming roller 11 reduces sagging defects caused by edge forming.
[0038] In addition, the second forming roller 12 with a relatively large distribution spacing can be transitioned to the conveying component of the glass 20, so that the glass 20 has a larger transition conveying surface, and the distribution spacing of the second forming roller 12 is smaller than the distribution spacing of the first forming roller 11, which can also reduce the sagging that occurs when receiving the glass 20.
[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, the forming device of the curved glass includes a pressure roller assembly, which includes a plurality of pressure rollers 30, and the plurality of pressure rollers 30 are spaced apart above the forming surface of the glass 20 in the direction of glass conveying. During the reciprocating swing of the glass 20, the first forming roller 11 and the second forming roller 12 below support it, and the plurality of pressure rollers 30 above are used for pressing and limiting. In this way, the plurality of pressure rollers 30 can cooperate with the glass 20 forming surfaces of the plurality of first forming rollers 11 and the plurality of second forming rollers 12 to form a forming channel for the glass 20 to swing back and forth. The glass 20 has upper and lower limits during the forming process, so that the forming accuracy of the glass 20 is higher.
[0042] Furthermore, multiple pressure rollers 30 are arranged in a one-to-one correspondence between two adjacent first forming rollers 11, that is, there is a pressure roller 30 above between the two first forming rollers 11, and at the same time, there is a pressure roller 30 above between the two second forming rollers 12. In this way, the glass 20 forms multiple supporting points with the first forming rollers 11 and the second forming rollers 12 at the bottom, and forms multiple limit points with the multiple pressure rollers 30 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 20 above and below, and the forming accuracy of the glass 20 is higher.
[0043] Of course, since it is a curved glass 20 that is being formed, the edge of the glass 20 requires a larger curvature. It is also possible to set multiple pressure rollers 30 structures above the multiple second forming rollers 12 located at the edge of the glass 20, and cooperate with the curvature setting of the second forming rollers 12 after the arc is changed, so as to facilitate better forming of the curved surface of the glass 20.
[0044] The specific pressing roller 30 does not need to have a strict correspondence with the first forming roller and the second forming roller. According to the requirements of the forming process, the number and position of the upper pressing roller 30 can be changed under the premise of ensuring the accuracy of the forming surface. That is to say, a plurality of pressing rollers 30 are correspondingly arranged above the forming surface of the glass 20 formed by multiple first forming rollers and multiple second forming rollers. The multiple pressing rollers 30 can cooperate with the forming surface of the glass 20 to form a forming channel for the glass 20 to swing back and forth, so that the forming accuracy of the glass 20 is higher.
[0045] Furthermore, the outer surfaces of the first and second forming rollers 11, 12 are provided with a layer of high-temperature resistant material. Since the curved glass 20 is formed after the glass 20 is heated, the outer surfaces of the first and second forming rollers 11, 12 used to support the glass 20 are provided with a layer of high-temperature resistant material. The high-temperature resistant material layer is in contact with the glass 20, thereby increasing the service life of the first and second forming rollers 11, 12.
[0046] It should be noted that compared with directly using high-temperature resistant materials to make the first forming roller 11 and the second forming roller 12 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.
[0047] Of course, the high temperature resistant material layer can be Kevlar material (aramid fiber material) commonly used in the current glass molding industry, or other high temperature resistant materials with the same performance in the prior art.
[0048] 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 multiple first forming rollers and multiple second forming rollers. The multiple first forming rollers and the multiple second forming rollers are spaced apart in a glass conveying direction, and the multiple 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 multiple first forming rollers and the multiple second forming rollers jointly form a glass forming surface in the glass conveying direction.
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 any one of claims 1 to 5, 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.
7. The curved glass forming device according to claim 6, wherein: 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.
8. The curved glass forming device according to any one of claims 1 to 5, 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.