A variable cam device

Abstract

The utility model discloses a variable arc device, it includes support and variable arc subassembly, and variable arc subassembly includes variable arc mechanism and support mechanism, and variable arc mechanism includes a plurality of variable arc spare, and two variable arc spares of adjacent each other articulate, support mechanism includes first support spare and second support spare, and first support spare has first end and second end, and second support spare has third end and fourth end, first end articulates through first articulation axle with support, and second end articulates through second articulation axle with third end, and fourth end articulates through third articulation axle with variable arc spare, the axle line L1, L2, L3 of first articulation axle, second articulation axle, third articulation axle all are parallel with each other, the utility model sets up support mechanism, and first support spare and second support spare of support mechanism can only swing in the plane that is perpendicular to axle line L1, L2, L3 simultaneously, and support mechanism can provide support in the axial direction of axle line L1, L2, L3, and effectively maintain variable arc spare straightness and mechanism overall stability.

Description

Technical Field

[0001] This utility model relates to the field of glass processing equipment technology, and in particular to a variable arc device. Background Technology

[0002] In the production of curved glass, the curve-changing mechanism on both sides of the roller conveyor is the core component for achieving the curved glass forming process. It drives the roller conveyor to change its curvature to achieve precise shaping of the glass. However, when the curve-changing mechanism is long, there are two major technical challenges: First, due to the unavoidable cumulative gaps during assembly, the two ends of the curve-changing mechanism will shift towards the sides of the roller conveyor; second, during operation, the curve-changing components at both ends of the mechanism will be subjected to lateral forces from the roller conveyor, the air grid assembly, and the gravity of the glass.

[0003] The combination of these two problems can easily cause the curvature-changing mechanism to tilt or shift towards the middle roller conveyor, resulting in a significant decrease in the curvature-changing accuracy of the roller conveyor. This not only causes errors in the curvature of the glass forming, affecting product quality, but also increases material waste and equipment debugging costs during the production process, severely restricting the production efficiency and manufacturing precision of curved glass. Utility Model Content

[0004] To overcome at least one of the defects described in the prior art, this utility model provides a variable arc device, which, by setting a support mechanism, allows the first and second support members of the support mechanism to swing only in a plane that is simultaneously perpendicular to axes L1, L2, and L3. The support mechanism can provide support force in the axial direction of axes L1, L2, and L3, effectively maintaining the straightness of the variable arc component and the overall stability of the mechanism; thus avoiding the problems of displacement and tilting of the variable arc mechanism caused by lateral forces such as accumulated assembly gaps, roller conveyors, and air grates.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] An arc-changing device includes a bracket and an arc-changing assembly. The arc-changing assembly includes an arc-changing mechanism and a support mechanism. The arc-changing mechanism includes multiple arc-changing elements, with adjacent arc-changing elements hinged to each other. The support mechanism includes a first support member and a second support member. The first support member has a first end and a second end, and the second support member has a third end and a fourth end. The first end is hinged to the bracket via a first hinge axis, the second end is hinged to the third end via a second hinge axis, and the fourth end is hinged to the arc-changing elements via a third hinge axis. The axes L1, L2, and L3 of the first hinge axis, the second hinge axis, and the third hinge axis are all parallel to each other.

[0007] As an optional implementation, the first support member includes a first connecting rod, with the first end and the second end respectively formed at both ends of the first connecting rod; the second support member includes a second connecting rod, with the third end and the fourth end respectively formed at both ends of the second connecting rod.

[0008] As an optional implementation, the first support member includes at least two first connecting rods that are sequentially hinged along a first direction. Two adjacent first connecting rods are hinged through a fifth hinge axis, and the axis of the fifth hinge axis is parallel to the axes L1, L2, and L3 of the first hinge axis, the second hinge axis, and the third hinge axis.

[0009] The free end of the first connecting rod located at one end of the first support member is formed as the first end, and the free end of the first connecting rod located at the other end of the first support member is formed as the second end; the second support member includes a second connecting rod, and the third end and the fourth end are formed at both ends of the second connecting rod.

[0010] As an optional implementation, the arc-changing component is provided with a first connecting portion and a second connecting portion, the second connecting portion being hinged to the first connecting portion of the adjacent arc-changing component via a fourth hinge axis; each arc-changing component rotates around its respective fourth hinge axis as a rotation center; the rotation axis L4 of the fourth hinge axis is parallel to the axes L1, L2, and L3 of the first hinge axis, the second hinge axis, and the third hinge axis.

[0011] As an optional implementation, the line connecting the fourth hinge axes of the plurality of the variable arc components is defined as the variable arc line L5, and the fourth hinge axis located at the center of the variable arc line L5 is fixed to the bracket.

[0012] As an optional implementation, the support mechanism is provided in two sets, namely a first support mechanism and a second support mechanism, which are symmetrically arranged on both sides of the center of the variable arc line L5.

[0013] As an optional implementation, the arc-changing mechanism at the beginning of the arc-changing line L5 is a first arc-changing component, which has a first hinge portion; the arc-changing mechanism at the end of the arc-changing line L5 is a second arc-changing component, which has a second hinge portion; the fourth end of the first support mechanism is hinged to the first hinge portion through the third hinge axis, and the fourth end of the second support mechanism is hinged to the second hinge portion through the third hinge axis.

[0014] As an optional implementation, the arc-changing assembly further includes an arc-lifting mechanism, which includes a driving member, a first arc-lifting member, and a second arc-lifting member. The first arc-lifting member is hinged to a first connecting portion of the first arc-changing member, and the second arc-lifting member is hinged to a second connecting portion of the second arc-changing member. The driving member is used to drive the first arc-lifting member and the second arc-lifting member to lift both ends of the arc-changing mechanism so that the arc-changing mechanism changes arc.

[0015] As an optional implementation, the variable arc component includes a hinge plate segment and a connecting plate segment, wherein the hinge plate segment is connected to one end of the connecting plate segment; the first connecting portion and the second connecting portion are spaced apart from each other on the hinge plate segment.

[0016] As an optional implementation, the arc-changing device includes a wind grid assembly and two sets of the arc-changing assemblies. The wind grid assembly includes an upper wind grid mechanism, and the two sets of the arc-changing assemblies are respectively disposed at both ends of the upper wind grid mechanism. The upper wind grid mechanism includes a plurality of first wind boxes, and the two ends of the first wind boxes are respectively connected to two arc-changing components disposed correspondingly in the two sets of the arc-changing assemblies.

[0017] As an optional implementation, the wind grid assembly further includes a lower wind grid mechanism, with a set of the variable arc components respectively disposed at both ends of the lower wind grid mechanism; the lower wind grid mechanism includes a plurality of second wind boxes, with both ends of the second wind boxes respectively connected to two variable arc members disposed correspondingly in the two sets of variable arc components.

[0018] As an optional implementation, the arc-changing device further includes a roller conveyor assembly, which includes multiple conveying rollers arranged at intervals along a conveying direction. The two ends of each conveying roller are respectively connected to two corresponding arc-changing components in two arc-changing assemblies. The upper air grate mechanism is located above the roller conveyor assembly, and the lower air grate mechanism is located below the roller conveyor assembly. The second air box is located in the gap between two adjacent conveying rollers. The arc-changing mechanism is used to drive the multiple conveying rollers to form an arc shape in the conveying direction during arc changing.

[0019] In summary, the arc-changing device provided by this utility model has the following technical effects:

[0020] This invention provides a support mechanism between the arc-changing mechanism and the bracket. The first and second support members of the support mechanism can only swing in a plane that is perpendicular to the axes L1, L2, and L3. The support mechanism can provide support force in the axial direction of the axes L1, L2, and L3, thereby limiting the overall offset degree of freedom of the arc-changing mechanism, correcting the positional deviation of each arc-changing component, maintaining its straightness, and ensuring the stability of the long-distance arc-changing mechanism.

[0021] Meanwhile, the arc-changing device of this utility model avoids the problems of offset and tilting of the arc-changing mechanism caused by lateral forces such as the cumulative gap of assembly, the roller conveyor and the gravity of the air grating, which significantly improves the arc-changing accuracy of the roller conveyor, reduces the arc error of glass forming, and reduces material consumption and equipment debugging costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a set of arc-changing components and brackets assembled according to an embodiment of the present utility model, and the arc-changing mechanism is not performing arc-changing;

[0024] Figure 2 This is a schematic diagram of the structure of a set of arc-changing components and brackets assembled according to an embodiment of the present utility model, and the arc-changing mechanism performing arc-changing;

[0025] Figure 3 This is a schematic diagram of the structure of the first windbox of this utility model assembly with two sets of arc-changing components, and the arc-changing mechanisms of the two sets of arc-changing components perform asynchronous arc-changing.

[0026] Figure 4 This is a schematic diagram of the arc-changing device according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the arc-changing device according to an embodiment of the present invention when performing asynchronous arc-changing.

[0028] The meanings of the reference numerals in the attached figures are as follows:

[0029] 10. Arc-changing assembly; 11. First support; 20. Arc-changing mechanism; 201. First arc-changing mechanism; 202. Second arc-changing mechanism; 203. Third arc-changing mechanism; 204. Fourth arc-changing mechanism; 21. Arc-changing component; 211. First connecting part; 212. Second connecting part; 213. Fourth hinge shaft; 214. Hinge plate segment; 215. Connecting plate segment; 22. First arc-changing component; 221. First hinge part; 23. Second arc-changing component; 231. Second... 30. Hinge joint; 31. Support mechanism; 32. First support member; 33. Second support member; 34. First hinge shaft; 35. Second hinge shaft; 40. Third hinge shaft; 41. Arc lifting mechanism; 42. Drive member; 43. First arc lifting member; 44. Second arc lifting member; 50. Second support; 51. Bracket; 52. Top beam; 53. Vertical beam; 60. First air box; 61. Second air box; 70. Conveying roller; 80. Glass; 90. Frame. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0032] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0033] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0034] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0035] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0036] See Figure 1 and Figure 4 This utility model discloses an arc-changing device, which includes a support 50 and an arc-changing assembly 10. Specifically, the arc-changing assembly 10 includes an arc-changing mechanism 20 and a support mechanism 30. The arc-changing mechanism 20 includes a plurality of arc-changing elements 21, and adjacent arc-changing elements 21 are hinged to each other. (See reference...) Figure 1 and Figure 2 The support mechanism 30 includes a first support member 31 and a second support member 32. The first support member 31 has a first end and a second end, and the second support member 32 has a third end and a fourth end. The first end is hinged to the bracket 50 via a first hinge shaft 33, the second end and the third end are hinged via a second hinge shaft 34, and the fourth end is hinged to the arc-changing member 21 via a third hinge shaft 35. The axes L1, L2, and L3 of the first hinge shaft 33, the second hinge shaft 34, and the third hinge shaft 35 are all parallel to each other.

[0037] Based on this structure, during assembly, multiple arc-changing components 21 can be connected sequentially via hinges to form an arc-changing mechanism 20, creating a chain structure that can be bent in a vertical plane. Then, the first end of the first support component 31 is hinged to the first support 11 on the bracket 50 via the first hinge shaft 33, providing a fulcrum for the entire support mechanism 30; the second end of the first support component 31 and the third end of the second support component 32 are hinged via the second hinge shaft 34, forming a rotatable linkage structure; next, the fourth end of the second support component 32 is hinged to the arc-changing component 21 of the arc-changing mechanism 20 via the third hinge shaft 35, completing the linkage assembly of the support mechanism 30 and the arc-changing mechanism 20.

[0038] The first support 11, the first end, the second end, the third end, the fourth end, and the arc-changing component 21 are all provided with corresponding hinge holes. Two hinge holes that are connected to each other are connected and driven by corresponding hinge shafts.

[0039] It should be noted that the axes L1, L2, and L3 of the first hinge axis 33, the second hinge axis 34, and the third hinge axis 35 are all parallel to each other and perpendicular to the same plane. The first support member 31 and the second support member 32 can only swing within this plane that is simultaneously perpendicular to the axes L1, L2, and L3. Specifically, in the spatial coordinate system formed by the mutually perpendicular x-axis, y-axis, and z-axis, the extension directions of L1, L2, and L3 are all consistent with the z-axis, that is, all three axes extend along the z-axis direction. Since the axis directions coincide with the z-axis, L1, L2, and L3 are all perpendicular to the xy-plane determined by the x-axis and y-axis.

[0040] Based on the motion characteristics of the hinge joint, each component can only rotate around the corresponding hinge axis and cannot translate in a direction perpendicular to the axis. Therefore, all movements of the first support member 31 and the second support member 32 are restricted to the xy plane, and their motion forms only include rotation around the z-axis and planar trajectory motion in the xy plane, such as swinging, translation or link curve motion, but there is no displacement along the z-axis or rotation around the x-axis or y-axis.

[0041] Therefore, when multiple arc-changing components 21 are sequentially hinged in the xy-plane, the multiple arc-changing components 21 can only bend and change arcs in the vertical plane defined by the x-axis and y-axis. Since the first support member 31 and the second support member 32 can perform linkage curve motion in the xy-plane, the planar linkage mechanism composed of the first support member 31 and the second support member 32 can swing with the rotation of the arc-changing component 21 when the arc-changing mechanism 20 changes arcs, without interfering with the movement of the arc-changing component 21.

[0042] More importantly, when the arc-changing mechanism 20 is bending and changing arcs, the accumulated assembly gaps cause the arc-changing parts 21 at both ends to shift in the z-axis direction, or the uneven force caused by the lateral forces such as the roller conveyor and / or the gravity of the wind grating causes an uneven force and a tendency to tilt towards the middle roller conveyor, the first support member 31 and the second support member 32 can apply a reverse support force to the arc-changing mechanism 20 by virtue of their rigid support characteristics, effectively counteracting the tilting trend.

[0043] Therefore, by setting a support mechanism 30 between the arc-changing mechanism 20 and the bracket 50, the support mechanism 30 can provide support force in the axial directions of axes L1, L2, and L3, thereby limiting the overall offset degree of freedom of the arc-changing mechanism 20 and correcting the positional deviation of each arc-changing component 21, maintaining its straightness, and effectively improving the stability of the long-distance arc-changing mechanism 20. Compared with the traditional arc-changing mechanism 20, the arc-changing device of this application avoids the offset and tilting problems of the arc-changing mechanism 20 caused by lateral forces such as the cumulative gap of assembly, the roller conveyor, and the gravity of the air grating, significantly improving the arc-changing accuracy of the roller conveyor, reducing the curvature error of the glass 80 forming, and reducing material consumption and equipment debugging costs.

[0044] As an optional implementation, the first support member 31 includes a first connecting rod, with a first end and a second end respectively formed at both ends of the first connecting rod. Correspondingly, the second support member 32 includes a second connecting rod, with a third end and a fourth end respectively formed at both ends of the second connecting rod.

[0045] The first end of the first link is fixedly hinged to the bracket 50 through the first hinge shaft 33, forming the fixed fulcrum of the entire support mechanism 30; the second end of the first link is hinged to the third end of the second link through the second hinge shaft 34, forming a link transmission node; the fourth end of the second link is hinged to the arc-changing component 21 of the arc-changing mechanism 20 through the third hinge shaft 35, and directly acts on the arc-changing mechanism 20.

[0046] When the arc-changing mechanism 20 changes its arc, adjacent arc-changing components 21 swing sequentially, causing the entire chain structure to form a continuous bend in the xy plane. The displacement of the arc-changing component 21 is transmitted to the fourth end of the second link via the third hinge shaft 35, forcing the second link to swing around the second hinge shaft 34. Simultaneously, the swing of the second link is transmitted to the second end of the first link via the second hinge shaft 34, thereby causing the first link to swing around the first hinge shaft 33.

[0047] Meanwhile, when the arc-changing mechanism 20 is offset towards the z-axis due to the hinge gap of the long chain arc-changing component 21, or when the arc-changing component 21 is tilted towards the middle roller in the z-axis direction due to the lateral forces such as roller friction, wind grid blowing force, or the gravity of glass 80, the first connecting rod can generate a reverse support force through the fixed fulcrum of the first hinge shaft 33, and transmit the force to the second connecting rod through the rigid rod body. The second connecting rod acts on the arc-changing mechanism 20 through the fourth end to counteract the offset trend and ensure that the arc-changing component 21 always moves along the xy plane and will not be offset.

[0048] Therefore, the passive linkage setting of the support mechanism 30 can avoid motion interference to the arc-changing mechanism 20 when it changes arc, while providing anti-offset support force to ensure the accuracy and reliability of the long-distance arc-changing mechanism 20.

[0049] As an optional implementation, the first support member 31 includes at least two first connecting rods that are sequentially hinged along a first direction, and adjacent first connecting rods are hinged together by a fifth hinge axis. The axis of the fifth hinge axis is parallel to the axes L1, L2, and L3 of the first hinge axis 33, the second hinge axis 34, and the third hinge axis 35. The free end of the first connecting rod located at one end of the first support member 31 is formed as a first end, and the free end of the first connecting rod located at the other end of the first support member 31 is formed as a second end. Furthermore, the second support member 32 includes a second connecting rod, with a third end and a fourth end formed at both ends of the second connecting rod.

[0050] Based on this structure, during assembly, at least two first connecting rods can be arranged sequentially along a first direction. Adjacent first connecting rods are connected by a fifth hinge axis, and the axis of the fifth hinge axis is parallel to the z-axis. The first direction can be the y-axis, which can be vertical. Correspondingly, the x-axis is horizontal. The z-axis is perpendicular to the vertical plane defined by the x-axis and y-axis.

[0051] The free end of the first connecting rod located at one end of the first support member 31 is fixedly hinged to the bracket 50 through the first hinge shaft 33, forming the basic fulcrum of the support mechanism 30; the free end of the first connecting rod located at the other end of the first support member 31 is hinged to the third end of the second connecting rod through the second hinge shaft 34, and the fourth end of the second connecting rod is hinged to the arc-changing member 21 through the third hinge shaft 35.

[0052] When the arc-changing mechanism 20 changes its arc, the displacement of the arc-changing component 21 is transmitted to the fourth end of the second link through the third hinge shaft 35, forcing the second link to swing around the second hinge shaft 34. Furthermore, the swing of the second link will push or pull the end link of the first support component 31. The end link is driven by the second link to swing around the second hinge shaft 34, and at the same time, the end link drives the adjacent first link to swing through the fifth hinge shaft. Subsequently, multiple segments of the first link are linked in sequence, causing the first support component 31 to swing in a serpentine manner as a whole, and finally the first link at the head end swings around the first hinge shaft 33.

[0053] When the arc-changing mechanism 20 shifts towards the z-axis due to accumulated clearance over a long distance, the multiple connecting rods of the first support member 31 are still restricted to swinging within the xy-plane. Through the rigid connection of the multiple connecting rods, the out-of-plane shift of the arc-changing mechanism 20 is converted into angular compensation of the in-plane support mechanism 30. When the arc-changing member 21 of the arc-changing mechanism 20 is subjected to a force in the z-axis direction, the load is transmitted to the end first connecting rod through the second connecting rod, then to the adjacent first connecting rod through the fifth hinge shaft until it reaches the first connecting rod at the beginning, and finally to the bracket 50, forming a multi-stage force transmission path. Each connecting rod only bears a portion of the load, which can reduce the risk of rod breakage.

[0054] In addition, both the first and second links are rigid links and can be made of stainless steel or other metals.

[0055] As an optional implementation, the arc-changing member 21 is provided with a first connecting portion 211 and a second connecting portion 212, and the second connecting portion 212 is hinged to the first connecting portion 211 of the adjacent arc-changing member 21 via a fourth hinge axis 213. Each arc-changing member 21 rotates around its respective fourth hinge axis 213 as a rotation center; and the rotation axis L4 of the fourth hinge axis 213 is parallel to the axes L1, L2, and L3 of the first hinge axis 33, the second hinge axis 34, and the third hinge axis 35.

[0056] When the arc-changing component 21 is subjected to an external force, it will rotate around the fourth hinge axis 213, and adjacent arc-changing components 21 will be connected by transmission through the fourth hinge axis 213, forming a continuous transmission link. Thus, multiple arc-changing components 21 can achieve flexible angle changes so that the arc-changing mechanism 20 can form the required arc.

[0057] In addition, the fourth hinge axis 213 serves as the rotation center between adjacent arc-changing components 21. Its axis L4 is parallel to axes L1, L2, and L3, ensuring the consistency of the motion plane of the entire arc-changing mechanism 20. This ensures that the arc-changing component 21 maintains planar motion during rotation, reduces the offset of a single arc-changing component 21, and thus improves the overall arc-changing accuracy.

[0058] In addition, both the first connecting part 211 and the second connecting part 212 can be hinge holes, and the two correspondingly connected hinge holes are hinged by the fourth hinge shaft 213.

[0059] As an optional implementation, the line connecting the fourth hinge axes 213 of the plurality of arc-changing components 21 is defined as the arc-changing line L5, wherein the fourth hinge axis 213 located at the center of the arc-changing line L5 is fixed to the bracket 50.

[0060] Based on this structure, the support 50 includes a top beam 51 and a vertical beam 52. Two arc-changing components 21 located in the middle of the arc-changing mechanism 20 are hinged by a fourth hinge shaft 213, and the fourth hinge shaft 213 is rotatably fixed to the vertical beam 52.

[0061] See Figure 1 Before the arc change, all arc-changing components 21 are in an initial straight state, the arc-changing line L5 is a straight line, and the fixing point of the central fourth hinge shaft 213 and the bracket 50 becomes the reference point for the entire arc-changing process. (See reference...) Figure 2During the arc-changing process, the arc-changing mechanism 20 rotates synchronously in opposite directions around the central fixed point as the center of symmetry. For example, if the arc-changing component 21 on the left side of the central fixed point rotates clockwise by an angle α, then the corresponding arc-changing component 21 on the right side rotates counterclockwise by an angle α, forming a symmetrical arc-changing trajectory. After the arc-changing is completed, the arc line L5 is an arc.

[0062] By fixing the fourth hinge shaft 213 at the center of the arc-changing line L5 to the bracket 50, the arc-changing component 21 at the center of the arc-changing mechanism 20 can be anchored on the bracket 50. The arc-changing components 21 on both sides of the arc-changing mechanism 20 can perform symmetrical arc-changing with the central arc-changing component 21 as the central reference, which can effectively improve the arc-changing accuracy and stability.

[0063] It should be noted that the central fixed point, acting as a stable support, effectively prevents the entire arc-changing mechanism 20 from shifting out of plane through its rigid connection with the bracket 50. Simultaneously, the symmetrical force distribution on both sides of the arc-changing components 21 further balances external interferences such as the gravity of the roller conveyor / air grating, ensuring arc-changing accuracy.

[0064] As an optional implementation, the support mechanism 30 is provided in two sets, namely the first support mechanism 30 and the second support mechanism 30, and the first support mechanism 30 and the second support mechanism 30 are symmetrically arranged on both sides of the center of the variable arc line L5.

[0065] Among them, the fourth hinge shaft 213 located at the center of the arc L5 is hinged and fixed to the bracket 50, forming a central support point and restricting the positional displacement of the middle section of the arc mechanism 20; while the two sets of support mechanisms 30 are respectively hinged to the arc components 21 located on both sides of the arc L5, forming two end support points, and the two sets of support mechanisms 30 restrict the positional displacement of the two ends of the arc mechanism 20.

[0066] Therefore, by setting at least three support points along the length of the arc-changing mechanism 20, a multi-point rigid constraint can be formed. The central support point and the two end support points form a stable "three-point-one-plane" structure (all located in the xy-plane), uniquely determining the spatial position of the arc-changing mechanism 20 and avoiding out-of-plane offset caused by single-point or two-point support. At the same time, the arc-changing mechanism 20 is divided into multiple segments by the three support points, and the errors such as the hinge gap of each segment are limited to a local range and will not accumulate along the entire length, further reducing the cumulative amount of assembly errors of the entire arc-changing mechanism 20.

[0067] As an optional implementation, the arc-changing mechanism 20 has a first arc-changing member 22 at the beginning of the arc line L5, and the first arc-changing member 22 is provided with a first hinge portion 221. Correspondingly, the arc-changing mechanism 20 has a second arc-changing member 23 at the end of the arc line L5, and the second arc-changing member 23 is provided with a second hinge portion 231. The fourth end of the first support mechanism 30 is hinged to the first hinge portion 221 via a third hinge shaft 35, and the fourth end of the second support mechanism 30 is hinged to the second hinge portion 231 via the third hinge shaft 35.

[0068] Based on this structure, when the arc-changing mechanism 20 changes arc, the first arc-changing element 22 and the second arc-changing element 23 are the input power ends. The first arc-changing element 22 and the second arc-changing element 23 rotate synchronously in opposite directions, and through the fourth hinge shaft 213, they drive the adjacent arc-changing elements 21 to rotate around the center of the arc-changing line L5 from both ends to the middle, thereby causing the arc-changing mechanism 20 to change arc.

[0069] When the first arc-changing member 22 rotates, it also pulls the second support member 32 of the first support mechanism 30 through the third hinge shaft 35, causing it to swing around the first hinge shaft 33 of the first support mechanism 30. When the second arc-changing member 23 rotates, it also pulls the second support member 32 of the second support mechanism 30 through the third hinge shaft 35, causing it to swing around the first hinge shaft 33 of the second support mechanism 30.

[0070] Both the first hinge portion 221 and the second hinge portion 231 can be connecting holes.

[0071] It should be noted that the first support mechanism 30 and the second support mechanism 30 are respectively connected to the first arc-changing member 22 at the beginning and the second arc-changing member 23 at the end through the third hinge shaft 35. Their movement is triggered by the displacement of the arc-changing member 21, forming a unidirectional transmission chain in which the arc-changing mechanism 20 swings first and the support mechanism 30 swings passively.

[0072] Since the first support mechanism 30 and the second support mechanism 30 are connected to the arc-changing components 21 located at both ends of the arc-changing mechanism 20 to form support points at both ends, the support points at both ends of the arc-changing mechanism 20 and the support point in the middle of the arc-changing mechanism 20 together determine the spatial position of the arc-changing mechanism 20. After the arc-changing mechanism 20 changes arc, the three support points are not on the same straight line. According to geometric principles, three points that are not on the same straight line uniquely determine a plane. Therefore, the arc-changing mechanism 20 is restricted to move within this plane.

[0073] This eliminates the translational and rotational degrees of freedom of the arc-changing mechanism 20 in the z-axis direction and around the x / y axes, retaining only the rotational degrees of freedom around the central support point in the xy plane. This confines the arc-changing process within the target plane, thereby avoiding tilting and offset caused by accumulated gaps and external loads.

[0074] As an optional implementation, the arc-changing assembly 10 further includes an arc-lifting mechanism 40. Specifically, the arc-lifting mechanism 40 includes a driving member 41, a first arc-lifting member 42, and a second arc-lifting member 43. The first arc-lifting member 42 is hinged to the first connecting portion 211 of the first arc-changing member 22, and the second arc-lifting member 43 is hinged to the second connecting portion 212 of the second arc-changing member 23. The driving member 41 drives the first arc-lifting member 42 and the second arc-lifting member 43 to lift both ends of the arc-changing mechanism 20, thereby causing the arc-changing mechanism 20 to change arc.

[0075] Based on this structure, when the drive unit 41 is activated and drives the first lifting member 42 and the second lifting member 43 to lift both ends of the arc-changing mechanism 20, as the first lifting member 42 lifts the first connecting part 211 of the first arc-changing member 22 upward, the first arc-changing member 22 rotates around the hinge point with the adjacent arc-changing member 21, that is, the fourth hinge axis 213, causing the adjacent arc-changing member 21 to swing in sequence; at the same time, the second lifting member 43 lifts the second arc-changing member 23 in the same motion mode, so that the other end of the arc-changing mechanism 20 moves synchronously. Under the lifting force at both ends, the entire arc-changing mechanism 20 gradually bends from a straight state into the required arc shape, and the relative angle between each arc-changing member 21 changes continuously until the target arc is reached.

[0076] After the glass 80 is formed, the drive component 41 moves in the opposite direction, causing the first arc lifting component 42 and the second arc lifting component 43 to slowly descend, so that the arc changing mechanism 20 gradually returns to a straight state, preparing for the next arc changing operation.

[0077] The first and second arc-lifting components 42 and 43 can be steel wire ropes, with one end connected to the drive component 41 and the other end connected to the arc-changing mechanism 20. The drive component 41 can include a motor. One end of the steel wire rope is fixed to a drum, which is rotatably connected to the top of the support 50 via a second support 44. The motor reduces its speed and increases its torque through a reducer, driving the drum to rotate. By adjusting the rotation direction and number of turns of the drum, the winding and unwinding length of the steel wire rope is precisely controlled, thereby realizing the lifting and resetting of the arc-changing mechanism 20.

[0078] As an optional implementation, the arc-changing component 21 includes a hinge plate segment 214 and a connecting plate segment 215, with the hinge plate segment 214 connected to one end of the connecting plate segment 215. A first connecting portion 211 and a second connecting portion 212 are spaced apart on the hinge plate segment 214.

[0079] Specifically, the hinge plate segment 214 of the arc-changing component 21 is connected to the hinge plate segment 214 of the adjacent arc-changing component 21 via the fourth hinge shaft 213, and can rotate around the fourth hinge shaft 213. The first arc-lifting component 42 and the second arc-lifting component 43 act synchronously, applying tension directly to the arc-changing component 21 through the hinge portion on the connecting plate segment 215. The tension can be immediately converted into rotational power of the hinge plate segment 214 around the hinge shaft, causing the arc-changing component 21 to swing, thereby causing the entire arc-changing mechanism 20 to bend and deform.

[0080] In the first variable arc member 22, the first hinge portion 221 can be disposed on the connecting plate segment 215, and the location of the first hinge portion 221, the location of the first connecting portion 211, and the location of the second connecting portion 212 on the first variable arc member 22 are located at the three corners of the same triangle. Similarly, in the second variable arc member 23, the location of the second hinge portion 231, the location of the first connecting portion 211, and the location of the second connecting portion 212 are also located at the three corners of the same triangle.

[0081] Therefore, during the arc-changing process, when the arc-lifting mechanism 40 applies tension or thrust to the arc-changing component 21 through the connecting part, and the support mechanism 30 constrains the arc-changing component 21 through the hinge part, these forces will be evenly transmitted and dispersed along the three sides of the triangle, effectively avoiding local stress concentration and reducing the risk of deformation and damage to the arc-changing component 21 due to uneven force.

[0082] As an optional implementation, the arc-changing device includes a wind grid assembly and two sets of arc-changing assemblies 10. More specifically, the wind grid assembly includes an upper wind grid mechanism, and the two sets of arc-changing assemblies 10 are respectively disposed at both ends of the upper wind grid mechanism. The upper wind grid mechanism includes a plurality of first wind boxes 60, and the two ends of the first wind boxes 60 are respectively connected to two corresponding arc-changing elements 21 disposed in the two sets of arc-changing assemblies 10.

[0083] Based on this structure, the arc-changing device includes a frame 90, with the top beam 51, vertical beam 52, and bottom beam 53 of the support 50 formed on or mounted on the frame 90. The arc-changing mechanisms 20 in the two sets of arc-changing components 10 are a first arc-changing mechanism 201 and a second arc-changing mechanism 202, respectively, and are spaced apart and opposite to each other in the z-axis direction. The two ends of the first air box 60 are respectively connected to two corresponding arc-changing elements 21 in the first arc-changing mechanism 201 and the second arc-changing mechanism 202. The first arc-changing mechanism 201 and the second arc-changing mechanism 202 are arc-changing by being lifted by a lifting mechanism on the frame 90. The first end of the support mechanism 30 is connected to the top beam 51 of the support 50, and the fourth end of the support mechanism 30 is connected to the arc-changing element 21.

[0084] In use, the drive component 41 of the arc-lifting mechanism 40 is activated, causing the arc-changing components 21 of the two sets of arc-changing assemblies 10 to move synchronously. The arc-changing component 21 rotates around the hinge axis, causing the arc-changing assembly 10 to gradually bend into the required arc. At the same time, the first air box 60 of the upper air grille mechanism connected to the arc-changing component 21 also deforms, and the entire upper air grille mechanism presents an arc shape consistent with the arc-changing assembly 10.

[0085] In this way, the upper air grille mechanism can deform synchronously with the movement of the arc-changing component 10, ensuring that the air grille always maintains the optimal distance and angle with the surface of the glass 80 during the arc-changing process of the glass 80, thereby achieving efficient cooling.

[0086] It should be noted that the first arc-changing mechanism 201 and the second arc-changing mechanism 202 can change arcs synchronously or asynchronously. Specifically, when the first arc-changing mechanism 201 and the second arc-changing mechanism 202 change arcs synchronously, that is, when the arc curvature radius and arc speed of the first arc-changing mechanism 201 and the second arc-changing mechanism 202 are the same, the ends of the first wind box 60 connected to the first arc-changing mechanism 201 and the second arc-changing mechanism 202 are at the same height. Therefore, the first wind box 60 presents a horizontal posture during the arc-changing process, and its force on the arc-changing mechanisms 20 at both ends is relatively even. However, the arc-changing mechanisms 20 will still be subjected to external loads such as wind reaction force during the arc-changing process. At this time, a stable support structure is formed by connecting the support mechanism 30 to the arc-changing mechanism 20, which restricts the displacement and sway of the arc-changing mechanism 20 in space along the z-axis direction.

[0087] See Figure 3 When the first arc-changing mechanism 201 and the second arc-changing mechanism 202 change arcs asynchronously, that is, when the arc curvature radius or arc-changing speed of the first arc-changing mechanism 201 and the second arc-changing mechanism 202 is different, the ends of the first wind box 60 connected to the first arc-changing mechanism 201 and the second arc-changing mechanism 202 are located at different heights. Therefore, the first wind box 60 is tilted during the arc-changing process, and the first wind box 60 will generate additional torque and eccentric force, resulting in uneven force on the arc-changing mechanism 20. At this time, the support mechanism 30 can provide rigid support force to limit the arc-changing mechanism 20 from tilting or shifting towards the central wind grid assembly.

[0088] As an optional implementation method, see [link / reference]. Figure 4 and Figure 5 The wind grating assembly also includes a lower wind grating mechanism, and a set of variable arc components 10 are respectively provided at both ends of the lower wind grating mechanism. The lower wind grating mechanism includes multiple second wind boxes 61, and the two ends of the second wind boxes 61 are respectively connected to two variable arc members 21 correspondingly provided in the two sets of variable arc components 10.

[0089] Based on this structure, the arc-changing mechanisms 20 in the two sets of arc-changing components 10 at both ends of the lower wind gate mechanism are respectively the third arc-changing mechanism 203 and the fourth arc-changing mechanism 204. The two ends of the second wind box 61 are respectively connected to the two corresponding arc-changing elements 21 in the third arc-changing mechanism 203 and the fourth arc-changing mechanism 204. The first end of the support mechanism 30 is connected to the bottom beam 53 of the bracket 50, and the fourth end of the support mechanism 30 is connected to the arc-changing element 21.

[0090] In use, the drive component 41 of the arc-lifting mechanism 40 is activated, causing the arc-changing components 21 of the two sets of arc-changing assemblies 10 to move synchronously. The arc-changing component 21 rotates around the hinge axis, causing the arc-changing assembly 10 to gradually bend into the required arc. At the same time, the second air box 61 of the lower air grille mechanism connected to the arc-changing component 21 also deforms, and the entire lower air grille mechanism presents an arc shape consistent with the arc-changing assembly 10.

[0091] The linkage between the lower windshield mechanism and the arc-changing component 10, as well as the application of the support component when the lower windshield mechanism is in a horizontal or inclined position, are the same as those of the upper windshield mechanism, and will not be elaborated further here.

[0092] As an alternative implementation method, please refer again. Figure 4 and Figure 5 The arc-changing device also includes a roller conveyor assembly. Specifically, the roller conveyor assembly includes multiple conveyor rollers 70, which are arranged at intervals along a conveying direction. The two ends of each conveyor roller 70 are respectively connected to two corresponding arc-changing elements 21 in two arc-changing assemblies 10. An upper air grate mechanism is located above the roller conveyor assembly, a lower air grate mechanism is located below the roller conveyor assembly, and a second air box 61 is located in the gap between two adjacent conveyor rollers 70. Furthermore, the arc-changing mechanism 20 is used to drive the multiple conveyor rollers 70 into an arc shape in the conveying direction during arc changing.

[0093] Based on this structure, when glass 80 is conveyed to the roller conveyor assembly via the upstream production line, multiple conveyor rollers 70 of the roller conveyor assembly begin to work collaboratively, smoothly conveying glass 80 to the arc-changing station at a preset conveying speed. Upon reaching the designated position, the drive component 41 of the arc-raising mechanism 40 receives a start command and begins to drive the arc-changing components 21 of the third arc-changing mechanism 203 and the fourth arc-changing mechanism 204 to move synchronously. The arc-changing component 21 rotates around the hinge axis, causing the connected conveyor roller 70 to gradually bend into the required arc in the conveying direction, forming an arc-shaped glass 80 conveying channel.

[0094] While the arc-changing assembly 10 drives the conveyor roller 70 to change arc, the connection structure between the first air box 60 and the second air box 61 of the upper and lower air box mechanisms and the arc-changing component 21 comes into play, causing the air box mechanism to deform synchronously with the arc-changing assembly 10. The upper air box mechanism is located above the roller assembly, and the lower air box mechanism is located below, forming a cooling layout that clamps the upper and lower components. The nozzles of the first air box 60 and the second air box 61 continuously spray cooling airflow onto the surface of the glass 80, maintaining a certain distance and angle from the surface of the glass 80, thus uniformly cooling the glass 80. As the glass 80 moves along the arc-shaped path with the roller, the continuous cooling effect gradually shapes the glass 80, ensuring that the curvature and shape of the glass 80 meet production requirements.

[0095] When the third arc-changing mechanism 203 and the fourth arc-changing mechanism 204 simultaneously change arcs, the support mechanism 30 connects with the arc-changing mechanism 20 to form a stable support structure. This effectively limits the displacement and swaying of the arc-changing mechanism 20 in space, resists external loads such as wind reaction forces, and maintains the stable operation of the arc-changing mechanism 20. (See also...) Figure 5 When the third arc-changing mechanism 203 and the fourth arc-changing mechanism 204 change arcs asynchronously, the roller assembly and the lower wind gate mechanism will tilt due to the difference in the arc curvature radius or speed at both ends, generating additional torque and eccentric force. At this time, the support mechanism 30 adjusts its own support force and constraint direction to offset these unbalanced forces in real time, ensuring the stable arc-changing of the arc-changing mechanism 20 and the forming accuracy of the glass 80.

[0096] Thus, the close cooperation between the arc-changing assembly 10, the air grid assembly, and the roller conveyor assembly enables precise control and uniform cooling of the glass 80 during the arc-changing process. The arc-changing assembly 10 drives the precise rotation of the arc-changing component 21 through the arc-lifting mechanism 40, causing the conveying roller 70 to form an accurate arc trajectory, providing a shape support surface for the arc-changing of the glass 80; the upper and lower air boxes of the air grid assembly deform synchronously, ensuring that the glass 80 is always in the optimal cooling environment during the arc-changing process, avoiding defects such as deformation and cracks in the glass 80 caused by uneven cooling.

[0097] Furthermore, by adjusting the parameters of the driving component 41 in the arc-raising mechanism 40, the synchronous or asynchronous arc-changing mechanism 203 and the fourth arc-changing mechanism 204 can be achieved, meeting the production requirements of conventional curved glass 80 and complex irregular curved surface glass 80.

[0098] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A variable arc device, characterized in that: The system includes a support frame and a variable arc assembly. The variable arc assembly includes a variable arc mechanism and a support mechanism. The variable arc mechanism includes multiple variable arc components, with adjacent variable arc components hinged to each other. The support mechanism includes a first support component and a second support component. The first support component has a first end and a second end, and the second support component has a third end and a fourth end. The first end is hinged to the support frame via a first hinge axis, the second end is hinged to the third end via a second hinge axis, and the fourth end is hinged to the variable arc component via a third hinge axis. The axes L1, L2, and L3 of the first hinge axis, the second hinge axis, and the third hinge axis are all parallel to each other.

2. The arc-changing device according to claim 1, characterized in that: The first support member includes a first connecting rod, with the first end and the second end respectively formed at both ends of the first connecting rod; the second support member includes a second connecting rod, with the third end and the fourth end respectively formed at both ends of the second connecting rod.

3. The arc-changing device according to claim 1, characterized in that: The first support member includes at least two first connecting rods that are sequentially hinged along a first direction. Two adjacent first connecting rods are hinged together by a fifth hinge axis. The axis of the fifth hinge axis is parallel to the axes L1, L2, and L3 of the first hinge axis, the second hinge axis, and the third hinge axis. The free end of the first connecting rod located at one end of the first support member is formed as the first end, and the free end of the first connecting rod located at the other end of the first support member is formed as the second end; the second support member includes a second connecting rod, and the third end and the fourth end are formed at both ends of the second connecting rod.

4. The arc-changing device according to claim 1, characterized in that: The arc-changing component is provided with a first connecting part and a second connecting part. The second connecting part is hinged to the first connecting part of the adjacent arc-changing component through a fourth hinge axis. Each arc-changing component rotates around the fourth hinge axis as the rotation center. The rotation axis L4 of the fourth hinge axis is parallel to the axes L1, L2, and L3 of the first hinge axis, the second hinge axis, and the third hinge axis.

5. The arc-changing device according to claim 4, characterized in that: The line connecting the fourth hinge axes of the plurality of the variable arc components is defined as the variable arc line L5, and the fourth hinge axis located at the center of the variable arc line L5 is fixed to the bracket.

6. The arc-changing device according to claim 5, characterized in that: The support mechanism is provided in two sets, namely a first support mechanism and a second support mechanism. The first support mechanism and the second support mechanism are symmetrically arranged on both sides of the center of the variable arc line L5.

7. The arc-changing device according to claim 6, characterized in that: The arc-changing mechanism has a first arc-changing component at the beginning of the arc-changing line L5, and the first arc-changing component is provided with a first hinge portion; the arc-changing mechanism has a second arc-changing component at the end of the arc-changing line L5, and the second arc-changing component is provided with a second hinge portion; the fourth end of the first support mechanism is hinged to the first hinge portion through the third hinge axis, and the fourth end of the second support mechanism is hinged to the second hinge portion through the third hinge axis.

8. The arc-changing device according to claim 7, characterized in that: The arc-changing assembly further includes an arc-lifting mechanism, which includes a driving member, a first arc-lifting member, and a second arc-lifting member. The first arc-lifting member is hinged to a first connecting portion of the first arc-changing member, and the second arc-lifting member is hinged to a second connecting portion of the second arc-changing member. The driving member is used to drive the first arc-lifting member and the second arc-lifting member to lift both ends of the arc-changing mechanism so that the arc-changing mechanism changes arc.

9. The arc-changing device according to any one of claims 4-8, characterized in that: The variable arc component includes a hinge plate segment and a connecting plate segment, wherein the hinge plate segment is connected to one end of the connecting plate segment; the first connecting portion and the second connecting portion are spaced apart from each other on the hinge plate segment.

10. The arc-changing device according to claim 1, characterized in that: The arc-changing device includes a wind grid assembly and two sets of the arc-changing assemblies. The wind grid assembly includes an upper wind grid mechanism, and the two sets of the arc-changing assemblies are respectively disposed at both ends of the upper wind grid mechanism. The upper wind grid mechanism includes a plurality of first wind boxes, and the two ends of the first wind boxes are respectively connected to two arc-changing components disposed in the two sets of the arc-changing assemblies.

11. The arc-changing device according to claim 10, characterized in that: The wind grating assembly also includes a lower wind grating mechanism, with a set of the variable arc components respectively provided at both ends of the lower wind grating mechanism; the lower wind grating mechanism includes a plurality of second wind boxes, with both ends of the second wind boxes respectively connected to two variable arc components correspondingly provided in the two sets of variable arc components.

12. The arc-changing device according to claim 11, characterized in that: The arc-changing device further includes a roller conveyor assembly, which includes multiple conveying rollers arranged at intervals along a conveying direction. The two ends of each conveying roller are respectively connected to two corresponding arc-changing components in two arc-changing assemblies. The upper air grate mechanism is located above the roller conveyor assembly, and the lower air grate mechanism is located below the roller conveyor assembly. The second air box is located in the gap between two adjacent conveying rollers. The arc-changing mechanism is used to drive the multiple conveying rollers to form an arc shape in the conveying direction during arc changing.

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