Curved tempered glass production device and production method

Abstract

The invention discloses a curved surface tempered glass production device and method. The curved surface tempered glass production device comprises a forming tempered grid, the forming tempered grid comprises a conveying assembly, a plurality of conveying wheels are arranged in the first direction, and a plurality of conveying wheels are arranged in the second direction; the surfaces of the plurality of conveying wheels jointly form a forming surface, and the forming surface is used for receiving the heated glass so as to form the glass; the transmission assembly is used for driving the conveying wheels to rotate so as to convey the glass; and the conveying wheel lifting assembly is used for driving the conveying wheel to ascend and descend in the height direction. The curved tempered glass production forming method comprises a heating step; a forming step; a tempering step; all the forming steps are completed in a forming tempered glass grid of the curved tempered glass production device. According to the invention, the softened glass is gradually molded in sequence through the molding surface formed by the plurality of conveying wheels distributed in the first direction and the second direction.

Description

Technical Field

[0001] The present invention relates to the technical field of curved glass production, and particularly to a production device and a production method for curved tempered glass. Background Art

[0002] Currently, for the production process of three-dimensional curved tempered glass using a horizontal roller conveyor, as Figure 1 、 Figure 2 shown, the glass 1 is first heated in the heating furnace I to a softened or nearly softened state, and then sent into the forming and tempering grid II for forming and tempering to obtain the product. The glass 1 is heated on a set of horizontally arranged conveyor rollers 11 in the heating furnace I. The forming and tempering grid II mainly consists of several conveyor wheels 21 arranged in a formation and several air nozzles 22; the conveyor wheels 21 can convey the glass 1 after the glass 1 enters the forming and tempering grid II; these conveyor wheels 21 can be adjusted to fit a curved surface C that is the same as the shape of the lower surface of the three-dimensional curved tempered glass 1 product. When the glass 1 completely enters the forming and tempering grid II, on this curved surface, under the action of gravity or simultaneously with the auxiliary pressure from above, after a certain period of time, it fits the curved surface to complete the forming; the air nozzles arranged on both sides of the curved surface blow air to cool the glass to complete the tempering and obtain the product.

[0003] See Figure 1 , Figure 1 -(a) represents the heating of the glass 1; Figure 1 -(b) represents the glass 1 entering the forming and tempering grid II; Figure 1 -(b) represents the glass 1 reaching the predetermined position inside the forming and tempering grid II; Figure 1 -(d) represents the completion of the forming of the glass 1; Figure 1 -(e) represents the start of cooling and tempering of the glass 1 until completion.

[0004] And Figure 2 represents the various states of the glass during the forming process, that is, Figure 2 before the 0 moment is the heating of the glass in the heating furnace I, the time period from 0 to T1 is the glass leaving the furnace, the time period from T1 to T2 is the forming of the glass, and the time period from T2 to T2 + Tx is the tempering and cooling of the formed glass.

[0005] From Figure 1 and Figure 2As shown, the glass 1 heated to the softened or nearly softened state starts to be formed after completely entering the forming and tempering grid II. If the length of the glass 1 is short, for example, the length does not exceed 5 meters, the time T1 for entering the forming and tempering grid II is short, and the heat loss is small, and the necessary temperature for forming can still be maintained, so the forming can be completed. If the length of the glass 1 is long, for example, the length exceeds 5 meters, the time T1 for entering the forming and tempering grid II is long, and the heat loss is large, the glass becomes hard and cannot maintain the necessary temperature for forming, so the forming cannot or is difficult to complete, and the product cannot or is difficult to produce.

[0006] Sometimes, in order to obtain a product with a longer length, the glass 1 can be overburned to forcibly increase the heating temperature of the glass 1, and the glass 1 can also be barely formed. However, because the glass 1 is too soft after overburning, on the conveying roller path 11 before leaving the heating furnace I and during the process of entering the forming and tempering grid II and passing through the non-planar three-dimensional curved surface, the glass 1 will show varying degrees of collapse, and the abnormal deformation and pitting of the glass 1 are serious, and the product shape and optical quality are poor.

[0007] The curved surface is a non-planar three-dimensional curved surface, and the adjusted shape remains unchanged throughout the production process. During the process of the glass 1 heated to the softened or nearly softened state entering the forming and tempering grid II, the support of the curved surface forming face on the lower surface of the glass 1 that has not been formed and basically remains planar is partial, uneven, and constantly changing. The lower surface of the glass 1 is extremely vulnerable to damage during the entry process, resulting in surface damage defects of the product.

[0008] During the process of air-blowing and tempering the formed glass 1, the glass 1 and the curved surface are three-dimensional shapes that fit each other. Driven by the conveying wheel 21, the glass 1 is very difficult to move its position or can only achieve a small movement. This will form serious dot-shaped tempering spots under the cooling air from the dot-shaped air outlets of the air nozzles 22. Some production processes also adjust the arrangement of the air nozzles 22 to fit the shape of the glass 1, so that the distance between the air nozzles 22 and the surface of the glass 1 is the same. However, during tempering, the glass 1 moves under the drive of the conveying wheel 21, resulting in a change in the adjusted distance. Then, the inconsistent distance will cause uneven tempering stress.

[0009] Therefore, the problems existing in the current horizontal roller path type three-dimensional curved surface tempered glass production process are 1. It is impossible or difficult to produce three-dimensional curved surface tempered glass products with a large length, such as a length exceeding 5 meters; or for glass products with a slightly larger length, the shape is poor and the optical quality is also poor; 2. The surface of the three-dimensional curved surface tempered glass product is damaged; 3. There are serious tempering spots on the surface of the three-dimensional curved surface tempered glass product; 4. The stress of the three-dimensional curved surface tempered glass product is uneven. Summary of the Invention

[0010] To overcome at least one of the above-mentioned defects of the prior art, the present invention provides a device for producing curved tempered glass and a production and forming method. When forming curved glass, a forming surface formed by a plurality of conveying wheels distributed in a first direction and a second direction is used to gradually form the softened glass in sequence.

[0011] The technical solution adopted by the present invention to solve its problems is as follows: A device for producing curved tempered glass includes a forming and tempering grid. The forming and tempering grid includes: A conveying assembly including a plurality of conveying wheels. A plurality of the conveying wheels are arranged in a first direction, and a plurality of the conveying wheels are arranged in a second direction perpendicular to the first direction; the surfaces of the plurality of conveying wheels together form a forming surface for receiving the glass to form the glass. A transmission assembly for driving the conveying wheels to rotate to convey the glass. A conveying wheel lifting assembly for driving the conveying wheels to lift and lower in the height direction.

[0012] Further, the forming and tempering grid further includes: A plurality of pressing wheels distributed above the plurality of conveying wheels, and the pressing wheels are distributed in both the first direction and the second direction. A pressing wheel lifting assembly for driving the pressing wheels to lift and lower in the height direction.

[0013] Further, the conveying assembly includes a plurality of conveying soft shafts spaced apart in the first direction; the axial direction of the conveying soft shafts is perpendicular to the first direction, and a plurality of the conveying wheels that can rotate together with the conveying soft shafts are provided on each of the conveying soft shafts. The transmission assembly is used to drive the conveying soft shafts to rotate; the conveying wheel lifting assembly is used to drive the conveying soft shafts to lift and lower in the height direction.

[0014] Further, at least three conveying wheel lifting assemblies are provided below each of the conveying soft shafts.

[0015] Further, a conveying wheel lifting assembly is provided below each of the conveying wheels, and the conveying wheel lifting assembly is used to drive each of the conveying wheels to lift and lower to control the lifting height of each of the conveying wheels.

[0016] Further, it further includes a wind grid assembly. The air grille assembly is disposed on both sides in the height direction of the forming surface jointly formed by the surfaces of a plurality of the conveying wheels, and includes a plurality of air nozzles and a plurality of air nozzle lifting assemblies; The plurality of air nozzles are used for blowing and cooling the formed glass to complete the tempering of the glass; The air nozzle lifting assembly is used for driving the air nozzles to lift in the height direction.

[0017] Further, the formed tempering grille is sequentially divided into a forming section, a tempering section, and a connecting section along the first direction, and the air grille assembly is disposed in the tempering section.

[0018] Further, the air grille assembly is provided in the entire area of the formed tempering grille.

[0019] A method for producing a curved tempered glass includes: A heating step of heating the glass to a softened state; A forming step in which the softened glass is received and formed by the formed tempering grille; A tempering step of cooling and tempering the formed glass; The forming step is all completed in the formed tempering grille of the curved tempered glass production device; It is defined that a flat glass is formed by a plurality of glass segments L continuously distributed in the first direction n The softened glass enters the formed tempering grille and is received by a plurality of the conveying wheels. Each glass segment L n According to the order of the glass entering the formed tempering grille, it is sequentially conveyed by a plurality of conveying wheels in the first direction, and gradually becomes a glass segment S after experiencing a forming time under the action of the forming surface during the conveying process n , and the forming is completed; and n is 0 and a natural number.

[0020] Further, the glass is conveyed by the conveying wheels into the formed tempering grille, and the glass moves unidirectionally or reciprocally without stopping along the first direction after entering the formed tempering grille.

[0021] In summary, the present invention has the following technical effects: The softened glass heated in the heating furnace forms a forming surface by a plurality of conveying wheels distributed in the first direction by the conveying assembly, and each group of a plurality of conveying wheels can form different curved forming surfaces under the action of the conveying wheel lifting assembly. After the glass is output from the heating furnace, the softened glass passes through a plurality of conveying wheels at different positions in the first direction and gradually forms into shape in sequence. During the output process of the glass, the glass forming action has already started, which significantly shortens the glass forming time. There is a forming surface section for forming the softened glass in the part where the softened glass is output from the heating furnace, that is, the forming can be carried out without waiting for all the softened glass to travel to the forming station, reducing the problems caused by the hardening due to heat dissipation during the forming process of the softened glass, breaking through the limitation in the prior art that it is impossible or difficult to form three-dimensional curved tempered glass with a relatively large length (such as a length exceeding 5 meters), and at the same time improving the glass forming quality, with good glass forming shape and good optical quality.

[0022] When the glass leaves the furnace, it is supported by a plurality of conveying wheels of the conveying assembly at multiple points. Even when conveying a long glass, the glass is not prone to collapse during the conveying process, so the glass is not prone to abnormal deformation during the glass forming process; and the support for the curved surface is uniform, and the lower surface of the glass is not easily damaged during the entry process. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the production method in the prior art; Figure 2 It is a schematic diagram of the production state of each cross-section segment of the glass in the prior art along the first direction during the production process; Figure 3 It is a schematic structural diagram of the curved surface production and forming device of the present invention; Figure 4 It is another schematic structural diagram of the curved surface production and forming device of the present invention; Figure 5 It is a schematic structural diagram of the production state of each cross-section segment of the glass along the first direction during the production process of the present invention; Figure 6 It is a schematic structural diagram of a kind of the curved surface production and forming device of the present invention with a pressing wheel structure; Figure 7 It is a schematic structural diagram of a kind of the conveying wheel and the conveying wheel lifting assembly of the present invention.

[0024] Among them, the meanings of the reference numerals are as follows: Ⅰ. Heating furnace; Ⅱ. Forming and tempering grid; 1. Glass; 11. Conveying roller path; 20. Conveying assembly; 21. Conveying wheel; 22. Air nozzle; 23. Pressing wheel; 24. Conveying flexible shaft; 25. Conveying wheel lifting assembly; 30. Transmission assembly; 40. Air grid assembly; D1. First direction; D2. Second direction; H. Height direction.

[0025] Figure 2 、Figure 5 Among them, the abscissa represents the distribution positions of each cross-section position (L, S) in the length direction of the glass on the glass, with the front-end cross-section L0 of the glass as the zero point, the ordinate represents the process time (T), with the moment when the front-end cross-section L0 of the glass enters the forming and toughening grid as the zero moment, Tx is the time after the cooling time, and the shaded area AH represents heating, the shaded area AF represents forming, and the shaded area AC represents toughening. Specific Embodiments

[0026] 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.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0029] Embodiment 1 Refer to Figures 3 - 7 , the present invention discloses a curved glass production and forming device, including a forming and toughening grid II, and the forming and toughening grid II includes a conveying assembly 20, a transmission assembly 30, and a conveying wheel lifting assembly 25. Specifically, the conveying assembly 20 includes a plurality of conveying wheels 21, and a plurality of conveying wheels 21 arranged in the first direction D1, and conveying wheels 21 arranged in the second direction D2. In this way, a plurality of conveying wheels 21 can be arranged in a matrix in the forming and toughening grid II, and the conveying wheels 21 can directly rotate under the action of the transmission assembly 30, and the glass 1 is conveyed during the rotation of the plurality of conveying wheels 21.

[0030] It should be noted that in any of the following embodiments, the above first direction may be the length direction of the glass itself, and the second direction may be the width direction of the glass itself. Of course, after the conveying wheels are started, the first direction is the production process direction of the glass, and the second direction is perpendicular to the glass production process direction.

[0031] The softened or nearly softened glass 1 heated in the heating furnace I can be received by a plurality of conveying wheels 21 of the forming and tempering grid II. The surfaces of the plurality of conveying wheels 21 can jointly form a forming surface matching the shape of the glass 1 to be formed. For example, for forming a curved surface glass 1, the forming surface formed by the plurality of conveying wheels 21 arranged in a matrix can be a curved surface. Another example is for forming a wavy glass 1, the forming surface formed by the plurality of conveying wheels 21 arranged in a matrix can be a wavy surface.

[0032] The above-mentioned conveying wheel lifting assembly 25 can drive the conveying wheels 21 to lift in the height direction H, that is, by lifting the conveying wheels 21 at different positions, and the lifting heights of the conveying wheels 21 can be different. For example, the lifting height of a group of conveying wheels 21 corresponding to the width direction of the glass 1 can gradually increase from the middle to both sides; for example, by lifting the conveying wheels 21 at different positions, the lifting height of a group of conveying wheels 21 corresponding to the width direction of the glass 1 can gradually decrease from the middle to both sides; another example is that the lifting height of a group of conveying wheels 21 corresponding to the width direction of the glass 1 gradually increases or decreases from one side to the other side, and the heights formed by each group of conveying wheels 21 in the length direction of the glass 1 can be the same or different. In this way, forming surfaces with different requirements can be formed, and it can be specifically adjusted according to the actual forming shape of the glass 1.

[0033] The transmission assembly 30 in this embodiment can be directly driven by a motor to rotate, or the motor can cooperate with a transmission mechanism, a speed reduction mechanism, etc. to achieve intermittent driving rotation. Specifically during forming, the glass 1 is first heated in the heating furnace I to a softened or nearly softened state (the nearly softened state referred to in this embodiment is a state where the glass 1 is heated to be able to deform under its own gravity or under the action of an external pressure). In the heating furnace I, there are a plurality of conveying roller paths 11 arranged in the glass production process direction. The conveying roller paths can be selected as ceramic roller paths with high temperature resistance in the prior art, or can be roller path structures that can be used at high temperatures formed by covering high temperature resistant materials on other conveying roller paths. When the glass 1 is heated, the glass 1 can be supported and heated by the plurality of conveying roller paths 11. After heating is completed, it is then conveyed by the plurality of conveying roller paths to the forming and tempering grid II, and is formed and tempered in the forming and tempering grid II to obtain a curved surface glass 1 product; Specifically during forming, the softened or nearly softened glass 1 can be formed on the forming surface under the action of gravity or simultaneously with the auxiliary pressure above. The air nozzles 22 arranged on both sides of the curved surface blow air to cool the glass 1 to complete tempering.

[0034] In the following description, taking the first direction as the glass production process direction, taking the flat state glass 1 before the glass 1 is formed as L, and taking the formed state glass 1 after the glass 1 is formed as S, it is defined that a whole flat glass has a plurality of glass segments L continuously distributed in sequence in the production process direction n, that is, the cross-sectional segment of the glass 1 in the planar state along the thickness direction of the glass 1 itself is L n , in the reverse production process direction (that is, the direction opposite to the production process direction), they are arranged in sequence as L0, L1, L2, ……, L n-1 , L n , L n+1 , ……, L N-2 , L N-1 , L N ; and on its curved tempered glass 1, there are corresponding cross-sectional segments S i , arranged in the reverse process direction in sequence as S0, S1, S2, ……, S n-1 , S n , S n+1 , ……, S N-2 , S N-1 , S N ; L n and S n correspond one by one; where N and n are 0 and natural numbers, and 0 ≤ n ≤ N.

[0035] During forming, since the multiple conveyor wheels of the conveyor assembly 20 can be controlled by the conveyor wheel lifting assembly and can be lifted and lowered according to the curved surface specifications of the glass forming in the control system, the heights in the first direction can be inconsistent, and the heights of the conveyor wheels in the second direction can also be inconsistent. For example, after the multiple conveyor wheels in the second direction are lifted and lowered by the conveyor wheel lifting assembly, a forming surface segment is formed in the second direction. The multiple conveyor wheels arranged in the second direction form a set of conveyor wheel groups, and multiple conveyor wheel groups are arranged in the first direction, and the lifting heights of the multiple conveyor wheel groups in the first direction can be different. In this way, the multiple forming surface segments arranged in the first direction jointly fit to form a forming surface, and during the continuous L n traveling process, it can be gradually formed in sequence by the continuously distributed forming surface segments on the forming surface.

[0036] See Figure 2 and Figure 5 , in the figure, the forming time T F is the necessary time experienced by the glass 1 from the start of the local part out of the heating furnace Ⅰ, continuously dissipating heat and gradually hardening until it can still complete the forming; The start cooling time T Q is the time when the glass 1 starts from the local part out of the heating furnace Ⅰ, experiences forming and continuously dissipates heat until it must start cooling, otherwise it will not be able to complete the tempering; The cooling time T C is the necessary time for the local part of the glass 1 to complete the tempering; T F , T C , T Q are all process parameters that can be set, and T F ≤ T Q .

[0037] See Figure 2 , in the production and forming device of the prior art, the time period from 0 to T1 is the process of the glass 1 being taken out of the furnace. During this process, the part of the glass 1 that has not been taken out of the furnace is continuously heated, and the part that has been taken out of the furnace is continuously dissipating heat. Until the glass 1 is completely taken out of the furnace, it starts to be formed at the time point T1. If it exceeds this T F This time period, and the forming has not started yet, then there will be a situation where part of the glass 1 cannot be formed or the forming accuracy of the glass 1 is poor due to heat dissipation. From Figure 2 It can be seen that in the time period from T1 to T F Only part of the length of the glass 1 has been formed, and at the time point T2, the forming of the entire length of the glass 1 is completed. Even when the glass 1 is relatively long and the glass 1 completely exits the heating furnace I, then the glass that starts to exit the heating furnace I first will experience a time period during which a large section of the glass 1 exceeds T F And has not been formed yet, which will cause the entire glass 1 to have poor forming accuracy due to being unable to be formed or excessive heat dissipation.

[0038] See Figure 3 , Figure 4 and Figure 5 , in the production and forming device of this embodiment, the time period from 0 to T1 is the process of the glass 1 being taken out of the furnace and also the process of the glass 1 being formed. During this process, the part of the glass 1 that has not been taken out of the furnace is continuously heated, and the part that has been taken out of the furnace starts to be formed immediately. At the moment when the glass 1 starts to be taken out of the furnace, that is, the moment when the glass 1 starts to be formed, that is, at any cross-sectional segment L of the glass 1 n Since the moment of being taken out of the furnace, it starts to gradually change into the cross-sectional segment S according to its own forming steps n , there is no gap time between the heating and forming processes. During this process, the glass 1 is supported by multiple sets of conveying wheel groups that have been controlled to lift and lower according to the control system and are arranged in the production process direction in the forming and toughening grid II. And during the process of the glass 1 gradually being output in the heating furnace I, the glass 1 is continuously conveyed and gradually formed by multiple sets of conveying wheels 21 in the production process direction.

[0039] See Figure 5 , in the time period from 0 to T1, the glass 1 is being heated in the production process direction, while the glass 1 that has been output from the front of the heating furnace I starts to be formed at the time point T S This time point. It can be seen from the figure that the heating time period and the forming time period have an overlapping time period T S -T1. At the same time, at the time point T2, the forming is completely completed, and S0 - S n In the time period from T S - T2, it is continuously distributed, representing gradual forming. Compared with the prior art Figure 2After being formed by the forming device, S0 - S n are all distributed at the time point T2 and can simultaneously start cooling and tempering the glass 1 that has completed forming at the T S time point, thus realizing the gradual forming and tempering of the glass.

[0040] It can be seen from this that in this embodiment, before the necessary time elapsed from the start of the local part of the glass 1 out of the heating furnace Ⅰ to the completion of forming, the glass 1 has already started to form. And at T F Before the necessary time elapsed from the start of the local part of the glass 1 out of the heating furnace Ⅰ, through forming and continuous heat dissipation, until the time T when cooling must start, otherwise tempering cannot be completed Q Before this time, the glass 1 has completely completed forming and started the cooling action, so the forming quality will not be affected by heat dissipation and hardening. Q

[0041] The multiple conveying wheels 21 of the forming and tempering grid Ⅱ can rotate independently, or rotate in groups together, or rotate all together, and are indirectly driven by several servo motors or other power sources to be instantaneously controlled in the height direction. Their upper surfaces jointly fit into a forming surface whose shape can change instantaneously according to control instructions; during the tempering process, when the glass 1 moves continuously in the production process direction (in this document, moving continuously in the production process direction means moving continuously back and forth or unidirectionally in the production process direction), the air nozzles 22 distributed on both sides of the curved surface are indirectly driven by several servo motors or other power sources to instantaneously control their heights, and each maintains the same distance from the curved surface as the curved surface changes, and at the same time each air nozzle 22 blows air according to the control instructions to cool the glass 1 to complete tempering.

[0042] The curved surface jointly formed by the upper surfaces of the conveying wheels 21 of the forming and tempering grid Ⅱ supports the glass 1 from the front cross-section segment L0 of the glass 1 heated to the softened or nearly softened state when it starts to enter the forming and tempering grid Ⅱ, through the completion of forming and tempering, until the product is obtained, and changes with the established process shape changes of the glass 1 during forming and tempering; the glass 1 is driven by several conveying wheels 21 and moves continuously in the production process direction without stopping after entering the forming and tempering grid Ⅱ; during the tempering process, each air nozzle 22 blows air according to the established process to cool the glass 1 to complete tempering.

[0043] In summary, in this embodiment, the glass 1 heated to the softened or nearly softened state does not start to form after completely entering the forming and tempering grid Ⅱ, but starts to form during the process of entering the forming and tempering grid Ⅱ, and forms sequentially as each part of the glass 1 enters. There is no problem that the glass 1 with a longer length has a long entry time and serious heat dissipation and cannot be formed. That is to say, there is no limit to the length of the glass 1 for forming to be completed.

[0044] ​Starting from the front-end cross-section segment L0 of the glass 1 that is self-heated to a softened or near-softened state, it enters the forming and tempering grid II, completes forming and tempering until the product is obtained. The curved surface jointly formed by the upper surfaces of the multiple conveying wheels 21 of the forming and tempering grid II always supports the glass 1 and changes with the established process shape change of the glass 1 during the forming and tempering processes. That is to say, the support of the forming surface jointly formed by the upper surfaces of the conveying wheels 21 of the forming and tempering grid II for the lower surface of the glass 1 is comprehensive and uniform, and the lower surface of the glass 1 is always well supported without causing damage defects.

[0045] Example 2, see Figure 6 , Furthermore, the forming and tempering grid II further includes a plurality of pressing wheels 23 and a pressing wheel lifting assembly. The plurality of pressing wheels 23 are distributed above the plurality of conveying wheels 21. The plurality of pressing wheels 23 can specifically be distributed corresponding to the plurality of conveying wheels 21, that is, the pressing wheels 23 are distributed both in the production process direction (the length direction of the glass 1 itself) and in the direction perpendicular to the production process direction (the width direction of the glass 1 itself).

[0046] The above-mentioned pressing wheel lifting assembly can drive the pressing wheels 23 to move up and down in the height direction.

[0047] On the basis of this structure, when forming the glass 1, in addition to the self-gravity of the glass 1, pressure is also applied above the glass 1 to assist. That is, the plurality of pressing wheels 23 can be pressed on the upper surface of the glass 1 under the drive of the plurality of pressing wheel lifting assemblies to assist in the forming of the glass 1; according to the needs of the glass 1 forming process, the height of the pressing wheels 23 changes instantaneously according to the control instructions.

[0048] Specifically, in this embodiment, multiple groups of pressing wheels 23 are arranged in the production process direction of the glass 1. Each group of pressing wheels 23 is provided with a flexible shaft arranged in the second direction D2, that is, the axial direction of the flexible shaft extends in the direction perpendicular to the production process direction. The single group of multiple pressing wheels 23 is connected in series by the flexible shaft, so that the pressing wheel lifting assembly can lift the flexible shaft to adapt to the lifting movement of the conveying wheels 21.

[0049] Example 3, on the basis of the structure of any of the above embodiments, Furthermore, see Figure 7 , the conveying assembly 20 includes a plurality of conveying flexible shafts 24. The plurality of conveying flexible shafts 24 are spaced apart in the production process direction; the axial direction of the conveying flexible shafts 24 is perpendicular to the production process direction, that is, in this embodiment, the second direction D2 is the axial direction of the conveying flexible shafts. A plurality of the conveying wheels 21 are rotatably provided on each of the conveying flexible shafts 24; The transmission assembly 30 is used to drive the conveying flexible shafts 24 to rotate; the conveying wheel lifting assembly 25 is used to drive the conveying flexible shafts 24 to move up and down in the height direction.

[0050] The conveying assembly 20 further includes a plurality of conveying flexible shafts 24, which are spaced apart in the production process direction, and the conveying flexible shafts 24 extend in a direction perpendicular to the production process direction. A plurality of conveying wheels 21 are provided on each of the conveying flexible shafts 24; the transmission assembly 30 can drive the conveying flexible shafts 24 to rotate. In this way, when the conveying flexible shafts 24 rotate, the plurality of conveying wheels 21 on the conveying flexible shafts 24 can be driven to rotate together. Since the conveying flexible shafts 24 have a certain flexibility, under the drive of the conveying wheel lifting assembly 25, the conveying flexible shafts 24 are driven to lift. In this way, the forming surface section formed by the plurality of conveying wheels 21 on the conveying flexible shafts 24 can undergo different curved surface changes during the lifting process of the conveying flexible shafts 24.

[0051] Specifically, a plurality of conveying wheel lifting assemblies 25 can be provided below the conveying flexible shafts 24, and the plurality of conveying wheel lifting assemblies 25 below the same conveying flexible shaft 24 can lift at different positions in a direction perpendicular to the production process direction.

[0052] If only one conveying wheel lifting assembly 25 is provided, the conveying wheel lifting assembly 25 can lift at one position of the conveying flexible shaft 24, for example, drive at the middle position. In this way, the curved surface change of the forming surface section can also be realized, but the curved surface change range is small for single-point lifting. If two conveying wheel lifting assemblies 25 are provided, the two conveying wheel lifting assemblies 25 can be symmetrically distributed on both sides of the conveying flexible shaft 24 in the second direction. When switching the curved surface of the forming surface section, they can either lift synchronously on both sides or lift unilaterally. In this way, the curved surface arc change range is relatively large. If three or more conveying wheel lifting assemblies 25 are provided, when the conveying flexible shafts 24 are lifted, the plurality of conveying wheel lifting assemblies 25 can achieve multi-point lifting positions, and the lifting heights of different conveying wheel lifting assemblies 25 are different, and different curved forming surface sections can be fitted, and the curved surface change is more flexible.

[0053] Specifically, the conveying wheel lifting assembly 25 can be selected as a linear motion output structure such as a lifting cylinder or a lead screw drive or a lifting oil cylinder in the prior art. The above-mentioned conveying flexible shafts 24 can be selected as wire flexible shafts in the prior art, or elastic wires can also be used to achieve the same.

[0054] Example 4, which is different from Example 3, In Embodiment 3, the conveying wheel group formed by the multiple conveying wheels 21 arranged in the second direction is formed by threading a flexible conveying shaft 24, while in this embodiment, the conveying wheel group formed by the multiple conveying wheels 21 arranged in the second direction is arranged separately, and a conveying wheel lifting assembly is provided below each conveying wheel 21. Each conveying wheel lifting assembly 25 is used to drive the corresponding conveying wheel 21 to lift and lower. In this way, a single conveying wheel 21 can be lifted and lowered by a single conveying wheel lifting assembly 25, and the forming surface section formed by a single group of conveying wheels can be lifted and lowered at a single point by a separate conveying wheel lifting assembly 25. In this way, the curved surface of the forming surface section changes at a single point, and there will be no linkage situation.

[0055] Embodiment 5 Based on any of the above embodiments, the curved glass 1 production and forming device further includes a wind grid assembly 40. The wind grid assembly 40 includes a plurality of air nozzles 22 and a plurality of air nozzle lifting assemblies. The plurality of air nozzles 22 are used to blow and cool the formed glass 1 to complete the tempering of the glass 1. The air nozzle lifting assembly is used to drive the air nozzle 22 to lift and lower in the height direction.

[0056] During the process of cooling and completing tempering after the glass 1 is formed, the forming surface jointly fitted by the upper surfaces of the conveying wheels 21 of the forming and tempering grid II always adapts to the shape of the glass 1. Then, the glass 1 can have a large or unrestricted movement amount driven by the conveying wheels 21. The cooling air from the dot-shaped air outlet holes of the air nozzles 22 will not form serious dot-shaped tempering spots on the glass 1. The tempering spots will be evenly diffused over the moving distance, improving the negative effects of the tempering spots.

[0057] During the tempering process, the air nozzles 22 can be driven by the air nozzle lifting assembly to maintain the same distance from the curved surface respectively as the shape of the forming surface formed by the multiple conveying wheels changes. The consistency of the blowing and cooling intensity is better. Then, the stress of the product is more uniform, the safety is better, the wind spots are less obvious, and the optical quality is better.

[0058] Embodiment 6, based on the structure of Embodiment 5 Further, the forming and tempering grid II is sequentially divided into a forming section, a tempering section, and a splicing section along the production process direction. The wind grid assembly is arranged in the tempering section. The glass moves forward continuously in one direction without stopping along the production process direction (i.e., the first direction D1) after entering the forming and tempering grid.

[0059] See Figure 3 , the forming and tempering grid II is divided into three sections along the production process direction: a forming section F, a tempering section C, and a splicing section P. Each cross-sectional section L of the glass 1 i Completes forming, tempering, and splicing in these three sections respectively. The air nozzles 22 are arranged in the tempering section C and blow and cool to complete tempering when the glass 1 passes by.

[0060] Figure 3 - (a) indicates that the glass 1 is being heated; Figure 3 - (b) indicates that the front part of the glass 1 is being tempered in the tempering section C, the middle part is being formed in the forming section F, and the rear part is still being heated in the heating furnace Ⅰ; Figure 3 - (c) indicates that the front part of the glass 1 has been tempered in the splicing section P, the middle part is being tempered in the tempering section C, and the rear part is being formed in the forming section F; Figure 3 - (d) indicates that the whole of the glass 1 is in the splicing section P and has been tempered.

[0061] This embodiment is applicable to a continuous production process with high production efficiency.

[0062] Embodiment 7, which is different from Embodiment 6 in that Further, a wind grid assembly is provided throughout the forming and tempering grid Ⅱ. The glass moves reciprocally without interruption along the production process direction after entering the forming and tempering grid.

[0063] See Figure 4 , the glass moves reciprocally along the production process direction (i.e., the first direction D1), the air nozzles 22 are arranged throughout the forming and tempering grid Ⅱ, and start blowing air to cool and temper the glass 1 simultaneously after the glass 1 is formed.

[0064] Figure 4 - (a) indicates that the glass 1 is being heated; Figure 4 - (b) indicates that each cross-sectional segment L of the glass 1 n starts to be formed with the cross-sectional segment S n as the target in the order of the glass entering the forming and tempering grid, and the rear part is still being heated; Figure 4 - (c) indicates that each cross-sectional segment L of the glass 1 n gradually becomes the cross-sectional segment S n after experiencing the forming time, that is, starts to be blown and cooled until tempering is completed. The front part has completed forming and starts to be blown and cooled, while the rear part is still in the forming process; Figure 4 - (d) indicates that the whole of the glass 1 has been formed and is blown and cooled until tempering of the whole is completed.

[0065] This embodiment is applicable to a non - continuous production process of glass, mainly for a production process where the glass needs to move reciprocally, and the equipment cost is lower than that of Embodiment 6.

[0066] Embodiment 8, A method for producing and forming a curved tempered glass, including a heating step of heating the glass to a softening state; Forming step: The glass in a softened state is received by the forming and tempering grid and formed. Tempering step: The formed glass is cooled and tempered. The forming step is completed in the forming and tempering grid of the curved tempered glass production device in any of the above embodiments. It is defined that the flat glass is formed by a plurality of Ls continuously distributed in sequence in the first direction. n That is, taking the first direction as the glass production process direction, a plurality of cross-sectional segments L are formed in a plane state perpendicular to the glass forming production process direction (in the direction of the glass's own thickness). n In the reverse process direction (i.e., the direction opposite to the production process direction), they are arranged in sequence as L0, L1, L2, ……, L n-1 、L n 、L n+1 、……、L N-2 、L N-1 、L N 、L n The softened glass enters the forming and tempering grid and is received by a plurality of the conveying wheels. Each cross-sectional segment L n is sequentially conveyed by the plurality of conveying wheels in the production process direction according to the order in which the glass enters the forming and tempering grid, and gradually becomes a cross-sectional segment S after experiencing the forming time under the action of the forming surface during the conveying process.

[0067] In this embodiment, for the convenience of description, the conveying wheel groups arranged in the production process direction (each conveying wheel group includes a plurality of conveying wheels 21 arranged in the second direction D2) are sequentially defined as C0, C1, C2, ……, C n-1 、C n 、C n+1 、……、C N2 、C N-1 、C N 、C n-1 、L n 、L n+1 、……、L N-2 、L N-1 、L N are sequentially in contact with C0, C1, C2, ……, C n-1 、C n 、C n+1 、……、C N-2 、C N-1 、C N 、C For example, L0 is the glass segment that is first output from the heating furnace I and is formed by C0 to form S0. L1 is output adjacent to L0. At this time, L0 is conveyed by the rotation of the conveying wheel 21 to C1 and continues to be formed by C1, while L1 is formed by C0, and so on to LN On the three-dimensional curved surface tempered glass 1 of its product, there is a corresponding cross-section segment S n , arranged in the reverse process direction are S0, S1, S2, ……, S n-1 , S n , S n+1 , ……, S N-2 , S N-1 , S N ; where N is 0 and a natural number and 0 ≤ n ≤ N; L0 deforms into S0.

[0068] The multiple conveying wheels of the formed tempered grid can rotate independently, or rotate in groups together or all together, and are indirectly driven by several servo motors or other power to be instantaneously controlled in the height direction. A group of conveying wheels is formed by multiple conveying wheels in the second direction, and multiple groups of conveying wheels are distributed in the first direction. Moreover, the lifting heights of each group of conveying wheels in the second direction are different, and it can also form a shaped surface segment fitted in the second direction. The lifting heights of multiple groups of conveying wheels in the first direction can be different, and a formed surface is fitted in the first direction. The formed surface formed in this way is formed by connecting the formed surface segments of multiple groups of conveying wheels. In this way, the upper surfaces of multiple conveying wheels jointly fit into a shape, and the formed surface can be instantaneously changed according to the control instruction by the conveying wheel lifting assembly; during the tempering process, when the glass moves continuously along the production process direction, the air nozzles distributed on both sides of the curved surface are indirectly driven by several servo motors or other power to instantaneously control their heights, and each keeps the same distance from the curved surface respectively as the shape of the curved surface changes. At the same time, each air nozzle blows air to cool the glass according to the control instruction to complete the tempering.

[0069] The curved surface jointly fitted by the upper surfaces of the multiple conveying wheels of the formed tempered grid starts from the front cross-section segment L0 of the glass heated to the softened or nearly softened state, enters the formed tempered grid, completes forming and tempering, and until the product is obtained, always supports the glass and changes with the established process shape change of the glass during forming and tempering; the glass is driven by several conveying wheels and moves continuously along the production process direction after entering the formed tempered grid; during the tempering process, each air nozzle blows air to cool the glass according to the established process to complete the tempering.

[0070] In summary, in this embodiment, the glass heated to the softened or nearly softened state does not start to be formed after completely entering the formed tempered grid, but starts to be formed during the process of entering the formed tempered grid, and is formed in sequence as each part of the glass enters. There is no problem that the glass with a longer length has a long entry time and serious heat dissipation and cannot be formed. That is to say, there is no limit to the length of the formed glass in the length direction.

[0071] The curved surface jointly fitted by the upper surfaces of the conveying wheels of the forming and toughening grid always supports the glass from the front-end cross-section segment L0 of the glass heated to the softened or nearly softened state when it enters the forming and toughening grid, completes forming and toughening, and until the product is obtained, and changes with the established process shape change of the glass during forming and toughening. That is to say, the support of the curved surface jointly fitted by the upper surfaces of the conveying wheels of the forming and toughening grid to the lower surface of the glass is comprehensive and uniform, and the lower surface of the glass is always well supported without causing damage defects.

[0072] Example 9, Under different circumstances, the glass can be cooled in different ways, that is, L0, L1, L2, ……, L n-1 , L n , L n+1 , ……, L N-2 , L N-1 , L N gradually change to form S0, S1, S2, ……, S n-1 , S n , S n+1 , ……, S N-2 , S N-1 , S N , and gradually change to form S0, S1, S2, ……, S n-1 , S n , S n+1 , ……, S N-2 , S N-1 , S N in sequence along the production process direction, and then pass through the cooling steps in sequence along the production process direction, which is applicable to the case of shorter glass.

[0073] Or, L0, L1, L2, ……, L n-1 , L n , L n+1 , ……, L N-2 , L N-1 , L N gradually change to form S0, S1, S2, ……, S n-1 , S n , S n+1 , ……, S N-2 , S N-1 , S N , and gradually change to form S0, S1, S2, ……, S n-1 , S n , S n+1 , ……, S N-2 , S N-1 , S N at the same time as S0, S1, S2, ……, Sn-1 , S n , S n+1 ,……,S N-2 , S N-1 , S N The cooling steps are sequentially passed along the production process direction, which is suitable for the case where the glass is relatively long.

[0074] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A device for producing curved tempered glass, characterized in that , including a formed tempered grid, The formed tempered grid includes, a conveying component, including a plurality of conveying wheels, with a plurality of the conveying wheels arranged in a first direction and a plurality of the conveying wheels arranged in a second direction, the second direction being perpendicular to the first direction; a forming surface is jointly formed by the surfaces of the plurality of conveying wheels, and the forming surface is used to receive glass so as to form the glass; a transmission component, which is used to drive the conveying wheels to rotate to convey the glass; a conveying wheel lifting component, which is used to drive the conveying wheels to move up and down in the height direction.

2. The curved tempered glass production device according to claim 1, wherein The formed tempered grid further includes, a plurality of pressing wheels, with the plurality of pressing wheels distributed above the plurality of conveying wheels, and the pressing wheels are distributed in both the first direction and the second direction; a pressing wheel lifting component, which is used to drive the pressing wheels to move up and down in the height direction.

3. The device for producing curved tempered glass according to claim 1, wherein, The conveying component includes a plurality of conveying soft shafts, with the plurality of conveying soft shafts spaced apart in the first direction; the axial direction of the conveying soft shafts is perpendicular to the first direction, and a plurality of the conveying wheels that can rotate together with the conveying soft shafts are provided on each of the conveying soft shafts; The transmission component is used to drive the conveying soft shafts to rotate; the conveying wheel lifting component is used to drive the conveying soft shafts to move up and down in the height direction.

4. The device for producing the curved tempered glass according to claim 3, wherein, At least three conveying wheel lifting components are provided below each of the conveying soft shafts.

5. The device for producing curved tempered glass according to claim 1, wherein, A conveying wheel lifting component is provided below each of the conveying wheels, and the conveying wheel lifting component is used to drive each of the conveying wheels to move up and down to control the lifting height of each of the conveying wheels.

6. The device for producing curved tempered glass according to any one of claims 1-5, characterized in that, It further includes a wind grid component; The wind grid component is distributed on both sides in the height direction of the forming surface jointly formed by the surfaces of the plurality of conveying wheels, and includes a plurality of air nozzles and a plurality of air nozzle lifting components; The plurality of air nozzles are used to blow and cool the formed glass to complete the glass tempering; The air nozzle lifting component is used to drive the air nozzles to move up and down in the height direction.

7. The curved surface tempered glass production device according to claim 6, characterized in that The formed tempered grid is sequentially divided into a forming section, a tempering section, and a receiving section along the first direction, and the wind grid component is arranged in the tempering section.

8. The curved tempered glass production device according to claim 6, characterized in that, The wind grid component is provided in the entire area of the formed tempered grid.

9. A method for producing curved tempered glass, including, a heating step of heating the glass to a softened state; a forming step of receiving and forming the glass in a softened state by the formed tempered grid; a tempering step of cooling and tempering the formed glass; It is characterized in that The forming step is completed in the formed tempered grid of the curved tempered glass production device according to any one of claims 1-8; The flat glass is defined to be formed by a plurality of glass segments L continuously distributed in the first direction. n The glass in a softened state enters the forming and tempering grid and is received by a plurality of the conveying wheels. Each glass segment L n According to the sequence in which the glass enters the forming and tempering grid, it is sequentially conveyed by a plurality of conveying wheels in the first direction, and gradually becomes a glass segment S after experiencing a forming time under the action of the forming surface during the conveying process. n Thus, the forming is completed; and n is 0 and a natural number.

10. The method for producing a curved tempered glass according to claim 9, wherein, The glass is conveyed into the formed tempered grid by the conveying wheels, and the glass moves in one direction without stopping or reciprocates along the first direction after entering the formed tempered grid.

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