Flexible shaft bent glass forming equipment

Abstract

The utility model relates to flexible shaft bent glass forming equipment which comprises a lower forming device, the lower forming device comprises a plurality of transverse flexible shaft arc-changing units which are arranged at intervals in the glass conveying direction, and each transverse flexible shaft arc-changing unit comprises a flexible shaft roller way, a side lead screw lifting mechanism and a lower supporting cross beam. The flexible shaft roller way is connected with a side lead screw lifting mechanism on the lower supporting cross beam, the transverse flexible shaft arc changing unit further comprises a middle lead screw lifting mechanism fixed to the lower supporting cross beam, the middle lead screw lifting mechanism comprises a middle lead screw, and the top end of the middle lead screw is connected with the middle of the flexible shaft roller way so as to drive the middle of the flexible shaft roller way to independently ascend and descend; all the side lead screw lifting mechanisms and the middle lead screw lifting mechanisms of each transverse flexible shaft arc-changing unit are adjusted to respective preset heights, and all the flexible shaft roller ways are jointly fitted into a preset forming face. The double-curved-surface glass forming machine can be compatible with forming of common double-curved-surface glass, saddle-shaped complicated double-curved-surface glass and the like, and the function of forming equipment is expanded.

Description

Technical Field

[0001] The utility model belongs to the technical field of glass forming, and particularly relates to a flexible shaft bent glass forming device. Background Art

[0002] In the technical field of glass bending forming, hyperbolic glass refers to glass that is bent in two directions along the glass conveying direction and perpendicular to the glass conveying direction. Ordinary hyperbolic glass is bent positively in both directions and can form a spherical glass-like shape. Wavy glass is generally considered to be bent in a wavy shape in one direction and belongs to single-curved glass.

[0003] In the existing hyperbolic forming equipment (such as CN109748486B), the central position in the length direction of the elastomer in the transverse arc-changing unit is fixedly connected to the support cross beam. The two sides of the elastomer at the fixed connection point are connected to the support cross beam through the plurality of height adjusting mechanisms. This forming equipment can only realize the forming of ordinary hyperbolic glass, with inflexible adjustment and unable to realize the forming of complex hyperbolic surfaces, and unable to form complex hyperbolic glass with local bending shape mutations such as Figure 12 the saddle-shaped glass shown, or with different-direction bends in two directions along the glass conveying direction and perpendicular to the glass conveying direction. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a flexible shaft bent glass forming device that can be compatible with the forming of ordinary hyperbolic glass and complex hyperbolic glass such as saddle-shaped glass.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a flexible shaft bent glass forming device, including a lower forming device. The lower forming device includes a plurality of transverse flexible shaft arc-changing units arranged at intervals along the glass conveying direction. The transverse flexible shaft arc-changing unit includes a flexible shaft roller path, a side screw rod lifting mechanism, and a lower support cross beam. The flexible shaft roller path is connected to the side screw rod lifting mechanism on the lower support cross beam. The transverse flexible shaft arc-changing unit further includes a central screw rod lifting mechanism fixed on the lower support cross beam. The central screw rod lifting mechanism includes a central screw rod. The top end of the central screw rod is connected to the middle part of the flexible shaft roller path to drive the middle part of the flexible shaft roller path to lift independently. All the side screw rod lifting mechanisms and central screw rod lifting mechanisms of each transverse flexible shaft arc-changing unit are respectively adjusted to their respective predetermined heights, and all the flexible shaft roller paths jointly fit into a predetermined forming surface.

[0006] The beneficial effects are as follows: In the forming device of the present utility model, by arranging a separately controllable middle lead screw lifting mechanism in the middle of the soft shaft roller path of multiple horizontal soft shaft variable arc units, the independent lifting of the middle of the soft shaft roller path is realized to control the shape of the middle position of the corresponding forming surface. Through the combined action of all side lead screw lifting mechanisms and the middle lead screw lifting mechanism, more complex variable arc control of the soft shaft roller path is achieved, so that multiple soft shaft roller paths are used to fit a more complex forming surface. It can form complex hyperbolic glass including local shape abnormal mutations or bent in different directions in two directions along the glass conveying direction and perpendicular to the glass conveying direction. For example, while the side lead screw lifting mechanism drives the respective soft shaft roller paths to bend forward to different degrees, the middle lead screw lifting mechanism drives the middle of the respective soft shaft roller paths to bend reversely in the glass conveying direction, so that all soft shaft roller paths can fit into a saddle-shaped forming surface and can be used for the forming of saddle-shaped hyperbolic glass. In addition, the device is compatible with the forming of ordinary hyperbolic glass and can also be used for the gradual forming of glass. Multiple horizontal soft shaft variable arc units form a gradually changing forming surface to make the glass gradually bend.

[0007] Furthermore, the middle lead screw lifting mechanism further includes a support seat. The top end of the middle lead screw is fixedly connected to the support seat, and a soft shaft middle transmission mechanism is arranged on the support seat.

[0008] The beneficial effects are as follows: By arranging the support seat, a connection position can be provided for the middle lead screw, and it will not affect the driving of the soft shaft roller path by the soft shaft middle transmission mechanism.

[0009] Furthermore, a guiding component is further arranged between the support seat and the lower support cross beam. The guiding component includes a guiding column and a guiding sleeve that slide relative to each other. The guiding column is fixed on the support seat, and the guiding sleeve is arranged on the lower support cross beam.

[0010] The beneficial effects are as follows: After arranging the guiding component, the guiding component can ensure that the middle lead screw lifting mechanism does not bear lateral force, improve the stability of the overall lifting structure, and avoid affecting the accuracy of the forming surface. For example, for the forming of glass with unequal arcs, it is required that the two sides of the soft shaft roller path in the transverse direction form arcs with unequal radii. At this time, the lateral force on the middle lead screw is relatively large, and the lead screw is prone to deformation, which cannot guarantee the accuracy of the forming surface.

[0011] Furthermore, an elastic member and a soft shaft support are further arranged between the soft shaft roller path and the side lead screw of the side lead screw lifting mechanism.

[0012] The beneficial effects are as follows: The arrangement of the elastic member and the soft shaft support can further improve the accuracy of the soft shaft roller path forming an arc. The elastic member is driven to deform by the lead screw to indirectly drive the soft shaft roller path to deform, so that the accuracy of the soft shaft roller path forming an arc is better.

[0013] Further, the lower forming device further includes a wind box type lower air grille, which is located between adjacent transverse flexible shaft arc-changing units. The wind box type lower air grille includes a plurality of lower air boxes arranged along the length direction of the flexible shaft roller path, and the lower air boxes are connected to the elastic members through air box mounting seats.

[0014] Its beneficial effect is that on the basis of glass forming, further setting the wind box type lower air grille can blow and temper the glass, so as to realize the integrated setting of glass forming and tempering, and realize the rapid tempering of the glass after forming.

[0015] Further, the lower forming device further includes two lower longitudinal arc-changing mechanisms, which are respectively arranged at both ends of the lower support cross beam.

[0016] Its beneficial effect is that on the basis of the transverse flexible shaft arc-changing unit performing transverse arc-changing on the glass, the lower longitudinal arc-changing mechanism further realizes a large-amplitude bending forming of the glass in the longitudinal direction, and realizes the complex forming of the glass shape. Specifically, when the multiple transverse flexible shaft arc-changing units cannot meet the arch height required in the longitudinal direction of the glass target shape by their own deformation, the longitudinal arc-changing mechanism is needed to participate.

[0017] Further, the flexible shaft glass bending forming equipment further includes an upper blowing device, which includes a plurality of upper air grille transverse arc-changing units arranged at intervals along the glass conveying direction, and the upper air grille transverse arc-changing units and the transverse flexible shaft arc-changing units are arranged corresponding to each other up and down.

[0018] Its beneficial effect is that the upper blowing device can blow and temper the upper surface of the glass, improving the tempering quality of the glass.

[0019] Further, the upper air grille transverse arc-changing unit includes an upper support cross beam, a wind box type upper air grille, an elastic member, a middle screw rod lifting mechanism and a plurality of side screw rod lifting mechanisms; the wind box type upper air grille includes a plurality of upper air boxes arranged along the length direction of the elastic member, and the upper air boxes are connected to the elastic member; the middle screw rod lifting mechanism and the plurality of side screw rod lifting mechanisms are arranged on the upper support cross beam at intervals along the length direction of the upper support cross beam, and the side screw rods of the side screw rod lifting mechanisms and the middle screw rod of the middle screw rod lifting mechanism are respectively connected to the elastic member.

[0020] Its beneficial effect is that through the setting of the middle screw rod lifting mechanism and the side screw rod lifting mechanisms, the wind box type upper air grille can form a blowing surface adapted to the glass shape, ensuring that the distances from the blowing surface to different positions on the glass surface are balanced, thereby ensuring the blowing and tempering quality and reducing the generation of wind spots.

[0021] Further, the upper air grille transverse arc-changing unit further includes a guiding assembly, which includes a guiding seat and diagonal braces on both sides of the guiding seat. The guiding seat is fixed on the lower supporting cross beam, and the middle lead screw vertically passes through the guiding seat and is slidably matched with the guiding seat. One end of the diagonal brace is fixedly connected to the side surface of the fixed seat, and the other end is fixedly connected to the diagonal brace support on the upper supporting cross beam.

[0022] The beneficial effect is that the guiding assembly can ensure that the middle lead screw lifting mechanism does not bear lateral force, improving the stability of the overall lifting structure.

[0023] Further, the upper blowing device further includes two upper air grille longitudinal arc-changing mechanisms, which are respectively arranged at both ends of the upper supporting cross beam.

[0024] The beneficial effect is that it can further drive the upper blowing device to form an arc longitudinally on the basis of the arc change of the upper air grille transverse arc-changing unit, so as to better adapt to the shape of the target glass as a whole.

[0025] The beneficial effect of the present utility model is that by adding a middle lead screw lifting mechanism to drive and control the middle position of the soft shaft roller path in multiple transverse flexible shaft arc-changing units, the present utility model realizes more complex arc-changing control of the soft shaft roller path to control the shape of the middle position of the corresponding forming surface. Thus, multiple soft shaft roller paths are used to fit a more complex forming surface, and complex hyperbolic glass with local shape abnormal mutations or bent in different directions in two directions along the glass conveying direction and perpendicular to the glass conveying direction can be formed. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is the front view of the soft shaft glass bending forming equipment of the present utility model in the flattened state in Embodiment 1;

[0028] Figure 2 It is the A-A view of the soft shaft glass bending forming equipment of the present utility model in Embodiment 1;

[0029] Figure 3 It is the front view of the transverse flexible shaft arc-changing unit in the flattened state in Embodiment 1;

[0030] Figure 4 It is the B-B view of the transverse flexible shaft arc-changing unit in Embodiment 1;

[0031] Figure 5 It is the front bending view of the horizontal flexible shaft variable arc unit in Embodiment 1;

[0032] Figure 6 It is the longitudinal reverse bending state view of the middle part of the flexible shaft glass bending forming equipment described in the present invention in Embodiment 1;

[0033] Figure 7 It is the middle part cross-sectional view of the flexible shaft glass bending forming equipment described in the present invention in the flattened state in Embodiment 2;

[0034] Figure 8 It is the front view of the horizontal flexible shaft variable arc unit in Embodiment 2;

[0035] Figure 9 It is the view in the C-C direction of the horizontal flexible shaft variable arc unit in Embodiment 2;

[0036] Figure 10 It is the front view of the flexible shaft glass bending forming equipment described in the present invention in the flattened state in Embodiment 3;

[0037] Figure 11 It is the front view of the upper air grille horizontal variable arc unit in Embodiment 3;

[0038] Figure 12 It is the schematic diagram of the saddle-shaped hyperbolic glass described in the present invention;

[0039] Figure 13 It is the schematic diagram of the ordinary hyperbolic glass;

[0040] Markings in the figure: 1. Horizontal flexible shaft variable arc unit, 2. Flexible shaft roller path, 3. Flexible shaft support, 4. Elastic part, 5. First hinge part, 6. Side screw rod, 7. Lower support cross beam, 8. Second hinge part, 9. Side driving motor, 10. Middle screw rod, 11. Middle driving motor, 12. Flexible shaft middle transmission mechanism, 13. Support seat, 14. Guide post, 15. Guide sleeve, 16. Wind box type lower air grille, 17. Lower air box, 18. Air box mounting seat, 19. Upper air grille horizontal variable arc unit, 20. Wind box type upper air grille, 21. Guide seat, 22. Diagonal brace, 23. Diagonal brace support, 24. Upper support cross beam;

[0041] 100. Lower forming device, 200. Upper blowing device. Detailed implementation manners

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it is not used as a basis for any limitation of the invention.

[0043] Embodiment 1: As Figures 1-4As shown in the figure, a flexible shaft bending glass forming device includes a lower forming device. The lower forming device includes a plurality of transverse flexible shaft arc-changing units 1 arranged at intervals along the glass conveying direction. The transverse flexible shaft arc-changing unit 1 includes a flexible shaft roller path 2, a flexible shaft support 3, an elastic member 4, a screw rod lifting mechanism, and a lower support cross beam 7. The lower support cross beam 7 is perpendicular to the glass conveying direction. When the flexible shaft roller path 2 and the elastic member 4 are in a flattened state, they are parallel to the lower support cross beam 7. The flexible shaft roller path 2 is supported above the elastic member 4 by a plurality of flexible shaft supports 3, and the elastic member 4 is supported above the lower support cross beam 7 by the screw rod lifting mechanism. The screw rod lifting mechanism is divided into a side screw rod lifting mechanism and a middle screw rod lifting mechanism according to the set positions. The middle screw rod lifting mechanism is used to support the middle part in the length direction of the elastic member 4 and the flexible shaft roller path 2, and the side screw rod lifting mechanisms are respectively located on both sides of the middle screw rod lifting mechanism. The side screw rod lifting mechanism includes a side driving motor 9 and a side screw rod 6. The side driving motor 9 is connected to the lower support cross beam 7 through a second hinge 8. The top end of the side screw rod 6 is connected to the elastic member 4 through a first hinge 5. The side driving motor 9 drives the side screw rod 6 to move up and down telescopically, driving the flexible shaft roller path 2 to bend and deform. The middle screw rod lifting mechanism includes a middle driving motor 11 and a middle screw rod 10. The middle driving motor 11 is fixed on the lower support cross beam 7. The middle driving motor 11 drives the middle screw rod 10 to move up and down telescopically, driving the middle part of the flexible shaft roller path 2 to rise or sink.

[0044] During the use of the lower forming device, all the side screw rod lifting mechanisms and middle screw rod lifting mechanisms of each transverse flexible shaft arc-changing unit 1 are respectively adjusted to their respective predetermined heights, and all the flexible shaft roller paths 2 jointly fit into a predetermined forming surface.

[0045] Its beneficial effects are as follows: In this flexible shaft bending glass forming device, a separately controllable middle screw rod lifting mechanism is arranged in the middle of the flexible shaft roller path, realizing the independent lifting of the middle part of the flexible shaft roller path to control the shape of the middle position of the corresponding forming surface. Through the joint action of all the side screw rod lifting mechanisms and the middle screw rod lifting mechanism, more complex arc-changing control of the flexible shaft roller path is achieved, so that multiple flexible shaft roller paths can be used to fit into a more complex forming surface. It can form complex hyperbolic glass with local shape anomalies or different-direction bends in two directions along the glass conveying direction and perpendicular to the glass conveying direction. For example, while the side screw rod lifting mechanism drives each flexible shaft roller path to bend forward to different degrees, the middle screw rod lifting mechanism drives the middle parts of each flexible shaft roller path to bend backward in the glass conveying direction, so that all the flexible shaft roller paths can be fitted into a saddle-shaped forming surface, which can be used for the forming of saddle-shaped hyperbolic glass. In addition, this device can be compatible with the forming of ordinary hyperbolic glass and can also be used for the gradual forming of glass. Multiple transverse flexible shaft arc-changing units form a gradually changing forming surface, making the glass gradually bend.

[0046] Preferably, the top end of the middle lead screw 10 is fixedly connected to the support base 13. A soft shaft middle transmission mechanism 12 is arranged on the support base 13. The middle part of the elastic member 4 is connected to the support base 13 or the soft shaft middle transmission mechanism 12. The middle part of the soft shaft roller path 2 is connected to the soft shaft middle transmission mechanism 12, and the soft shaft roller path 2 is driven to rotate by the soft shaft middle transmission mechanism 12. Alternatively, the middle lead screw can also be directly connected to the elastic member, and the soft shaft transmission mechanism can also be arranged at the side.

[0047] Furthermore, through holes for the side lead screw 6 and the middle lead screw 10 to pass through are arranged on the lower support cross beam 7, and the through hole for the side lead screw 6 to pass through is a long strip hole, so that the side lead screw 6 can swing during the bending process of the soft shaft roller path 2. Alternatively, the lower support cross beam can also be of a hollow structure, which can also achieve the swing of the lead screw.

[0048] Furthermore, a guiding assembly is arranged between the support base 13 and the lower support cross beam 7. The guiding assembly includes a guiding sleeve 15 and a guiding column 14. The guiding column 14 is fixed on the support base 13, the guiding sleeve 15 is fixed on the lower support cross beam 7, and is aligned with the guiding hole on the lower support cross beam. The guiding column 14 is slidably arranged in the guiding sleeve 15, ensuring that the middle lead screw lifting mechanism does not bear lateral force and improving the stability of the overall lifting structure. In addition, the soft shaft bent glass forming equipment can not only form double-curved glass, but also form single-curved glass, non-equal arc glass, etc. The magnitudes of the lateral forces received by the middle lead screw are different. In order to ensure the service life of the lead screw, the guiding assembly is added.

[0049] Furthermore, the elastic member 4 is a spring wire or a spring steel sheet. When using spring wires, multiple spring wires are generally used in combination.

[0050] Furthermore, the lower forming device further includes two lower longitudinal arc-changing mechanisms. The lower longitudinal arc-changing mechanisms adopt the conventional chain plate type longitudinal arc-changing mechanisms in the art and are respectively arranged at both ends of the lower support cross beam 7. During the arc-changing process, each transverse soft shaft arc-changing unit 1 can lift the soft shaft roller path 2 to a certain height through the lead screw lifting mechanism. After multiple transverse soft shaft arc-changing units 1 lift the soft shaft roller path 2 to different heights, to a certain extent, longitudinal arc-changing can be carried out while transverse arc-changing, which can be used for the situation where the height change of the formed curved surface in the longitudinal direction is not large. However, for the glass shape with a large height change in the longitudinal direction of the target curved surface after arc-changing or a large longitudinal arch height, when the height lifted by only the lead screw lifting mechanism cannot meet the requirements of the glass target shape in the longitudinal direction, the lower longitudinal arc-changing mechanism can be used for longitudinal arc-changing at this time, so that the lower support cross beams 7 of multiple soft shaft arc-changing units 1 have different heights, thereby meeting the requirements of longitudinal arc-changing.

[0051] Such as Figure 5As shown, when the flexible shaft roller path is bent forward, the side screw rod extends, jacking up the connected flexible shaft roller path, so that the flexible shaft roller path is bent into an arc.

[0052] As Figure 6 shown, when the middle screw rod 10 expands and contracts, it can drive the middle part of the flexible shaft roller path 2 to rise or fall, so that the middle part of the flexible shaft roller paths 2 of multiple transverse flexible shaft arc-changing units 1 forms Figure 6 the reverse bending state in the longitudinal direction as shown. If the flexible shaft roller path 2 is Figure 5 in the forward-bending arc shape as shown, then the surface fitted by all the flexible shaft roller paths 2 is Figure 12 the saddle shape as shown, which can be used for forming saddle-shaped glass.

[0053] In this embodiment, an elastic member and a flexible shaft support are further provided between the flexible shaft support and the side screw rod of the side screw rod lifting mechanism. The elastic member is deformed by the screw rod drive to indirectly drive the deformation of the flexible shaft roller path, so that the accuracy of forming the flexible shaft roller path into an arc is better. In some other embodiments, the elastic member and the flexible shaft support can also be omitted, and the side screw rod and the middle screw rod can be used to connect the flexible shaft to drive the flexible shaft to form an arc, which is also feasible to implement.

[0054] Embodiment 2: As Figures 7-9 shown, on the basis of Embodiment 1, this embodiment is provided with a wind box type lower air grille 16 for blowing and tempering the glass on the flexible shaft roller path 2. The wind box type lower air grille 16 is located between adjacent transverse flexible shaft arc-changing units 1 and includes a plurality of lower air boxes 17 arranged along the length direction of the flexible shaft roller path 2. The lower air boxes 17 are connected to the elastic member 4 through air box mounting seats 18. The bottom of the lower air box 17 is connected to the air supply mechanism through a flexible air duct.

[0055] On the basis of glass forming, further setting the wind box type lower air grille 16 can blow and temper the glass, so as to realize the integrated setting of glass forming and tempering and achieve rapid tempering of the glass after forming.

[0056] Preferably, the air box mounting seat 18 is in a butterfly shape. After being mounted on the elastic member 4, the two mounting surfaces of the air box mounting seat 18 are distributed on both sides of the elastic member 4. Two wind box type lower air grilles 16 can be mounted on the transverse flexible shaft arc-changing unit 1 where the air box mounting seat 18 is mounted, and the adjacent transverse flexible shaft arc-changing unit 1 does not need to mount the wind box type lower air grille 16. Alternatively, it can also be set that each transverse flexible shaft arc-changing unit mounts one wind box type lower air grille 16.

[0057] Embodiment 3: As Figures 10-11 shown, on the basis of the lower forming device 100 described in Embodiment 1 or 2, the flexible shaft bending glass forming device further includes an upper blowing device 200.

[0058] The upper blowing device 200 includes a plurality of upper air grille transverse arc-changing units 19 arranged at intervals along the glass conveying direction. The upper air grille transverse arc-changing units 19 and the transverse flexible shaft arc-changing units 1 are arranged in an up-and-down corresponding manner. The upper air grille transverse arc-changing unit 19 includes an upper support cross beam 24, a wind box-type upper air grille 20, an elastic member 4, and a screw rod lifting mechanism. As Figure 11 shown, in the upper air grille transverse arc-changing unit 19, the upper support cross beam 24 is parallel to the lower support cross beam in the transverse flexible shaft arc-changing unit 1. The screw rod lifting mechanism includes a side screw rod lifting mechanism and a middle screw rod lifting mechanism. The side screw rod lifting mechanism includes a side driving motor 9 and a side screw rod 6. The side driving motor 9 is connected to the upper support cross beam 24 through a second hinge member 8. The side screw rod 6 passes through the upper support cross beam 24 and is connected to the elastic member 4 through a first hinge member 5. The middle screw rod lifting mechanism includes a middle driving motor 11 and a middle screw rod 10. The middle driving motor 11 is fixed on the upper support cross beam 24. The middle screw rod 10 passes through the upper support cross beam 24 and is fixedly connected to the elastic member 4. The wind box-type upper air grille 20 includes a plurality of upper air boxes arranged along the length direction of the elastic member 4, and the upper air boxes are connected to the elastic member 4.

[0059] Through the settings of the middle screw rod lifting mechanism and the side screw rod lifting mechanism of the upper blowing device 200, the wind box-type upper air grille 20 can form a blowing surface adapted to the shape of the glass, ensure that the distances from the blowing surface to different positions on the glass surface are balanced, thereby ensuring the quality of blowing tempering and reducing the generation of wind spots.

[0060] A guiding component is further provided in the middle screw rod lifting mechanism. The guiding component includes a guiding seat 21 and inclined braces 22 located on both sides of the guiding seat 21. The guiding seat 21 is fixed on the lower surface of the upper support cross beam 24. The middle screw rod 10 slides through the guiding seat 21. One end of the inclined brace 22 is fixedly connected to the guiding seat 21, and the other end is fixedly connected to an inclined brace support 23 fixed on the upper support cross beam 24. The setting of the guiding component can ensure that the middle screw rod 10 does not bear lateral forces, improve the stability of the overall lifting structure, and ensure the accuracy of the forming surface.

[0061] Furthermore, upper air grille longitudinal arc-changing mechanisms are connected to both ends of the upper support cross beam 24. The upper air grille longitudinal arc-changing mechanisms adopt conventional chain plate-type longitudinal arc-changing mechanisms in the art. It can further drive the upper blowing device 200 to form an arc longitudinally on the basis of the arc change of the upper air grille transverse arc-changing unit 19, so as to better adapt to the shape of the target glass as a whole.

[0062] Embodiment 4: A forming method for a saddle-shaped hyperbolic glass, which uses the flexible shaft glass bending forming equipment described in Embodiment 1, and includes a prefabrication step before the glass enters and a glass forming step:

[0063] 1. Prefabrication steps before the glass enters: Each lateral flexible shaft arc-changing unit 1 in the flexible shaft bending glass forming equipment is under the joint control of the lateral screw rod 6 of the lateral screw rod lifting mechanism and the middle screw rod 10 of the middle screw rod lifting mechanism, and undergoes different degrees of forward bending and arc-changing in the lateral direction (as Figure 5 shown); the middle part of the flexible shaft roller path 2 of each lateral flexible shaft arc-changing unit 1 is independently lifted and lowered under the control of the corresponding middle screw rod lifting mechanism, and the lifting heights of each middle screw rod 10 are different. Among them, the middle elevation of the lateral flexible shaft arc-changing unit 1 located in the middle is the highest, and the closer the lateral flexible shaft arc-changing units 1 on both sides of it are to the outside, the lower their middle elevation. As a result, the middle parts of multiple flexible shaft roller paths 2 are reversely bent along the glass conveying direction (as Figure 6 shown), and finally all the flexible shaft roller paths 2 are integrally fitted to form a saddle-shaped forming surface;

[0064] 2. Glass forming steps: After the heated glass enters the flexible shaft bending glass forming equipment, it finally forms a saddle-shaped hyperbolic glass as shown in Figure 12 shown.

[0065] This method forms a complex saddle-shaped forming surface through the coordinated control of the lateral screw rod lifting mechanism and the middle screw rod lifting mechanism of multiple lateral flexible shaft arc-changing units, realizes the forming of saddle-shaped hyperbolic glass, and expands the functions of this equipment.

[0066] Furthermore, in the prefabrication step, each lateral flexible shaft arc-changing unit 1 is adjusted by the one-step method and only adjusted once to reach the predetermined position.

[0067] Furthermore, in the prefabrication step, each lateral flexible shaft arc-changing unit 1 is adjusted by the two-step method. First, multiple lateral flexible shaft arc-changing units 1 are forward bent to the same radian, and then the middle parts of each lateral flexible shaft arc-changing unit 1 are adjusted to different heights to form a reverse bend in the middle, and finally a saddle-shaped forming surface is formed.

[0068] When blow-tempering the saddle-shaped hyperbolic glass, the flexible shaft bending glass forming equipment described in Embodiment 2 or Embodiment 3 is used. Among them, the wind box type lower air grille 16 can be formed along with the flexible shaft roller path 2 without separate adjustment. The wind box type upper air grille 20 needs to be adjusted by a screw rod lifting mechanism to form a blowing surface adapted to the shape of the target glass. The adjustment of the lateral screw rod lifting mechanism and the middle screw rod lifting mechanism of the upper air grille lateral arc-changing unit 19 is similar to the adjustment of the lateral flexible shaft arc-changing unit 1, so as to form a saddle-shaped blowing surface and ensure the constancy of the blowing distance of the upper air grille.

[0069] It should be noted that forward bending or positive bending refers to an arc with an upward-opening forming surface after arc-changing, which can be an arc with an equal radius or an arc fitted by multiple radii. Reverse bending or negative bending refers to an arc with a downward-opening after arc-changing.

[0070] Example 5: A method for forming complex hyperbolic glass, which is carried out by using the flexible shaft bending glass forming equipment described in Example 1, including a prefabrication step before the glass enters and a glass forming step:

[0071] 1. Prefabrication step before the glass enters: Each transverse flexible shaft arc-changing unit 1 in the flexible shaft bending glass forming equipment forms an arc with a specific curvature in the transverse direction through the side screw rod lifting mechanism and the middle screw rod lifting mechanism. Multiple transverse flexible shaft arc-changing units 1 respectively form different curvatures, and all flexible shaft roller paths 2 jointly fit to form a forming surface adapted to the complex shape of the target glass.

[0072] 2. Glass forming step: After the glass enters, complex hyperbolic glass is finally formed.

[0073] In this forming method, by adding a middle screw rod lifting mechanism to the multiple transverse flexible shaft arc-changing units to drive and control the middle position of the flexible shaft roller path, more complex arc-changing control of the multiple flexible shaft roller paths is realized, so as to control the shape of the middle position of the corresponding forming surface. Therefore, multiple flexible shaft roller paths are used to fit a more complex forming surface, and complex hyperbolic glass including local shape abnormal mutations or bent in different directions in two directions along the glass conveying direction and perpendicular to the glass conveying direction can be formed.

[0074] When the formed complex hyperbolic glass is tempered by blowing, the flexible shaft bending glass forming equipment described in Example 2 or Example 3 is adopted. Among them, the wind box type lower air grille 16 can be formed along with the flexible shaft roller path 2 without separate adjustment, and the wind box type upper air grille 20 needs to be adjusted through a screw rod lifting mechanism to form a blowing surface adapted to the shape of the target glass. The adjustment of the side screw rod lifting mechanism and the middle screw rod lifting mechanism of the upper air grille transverse arc-changing unit 19 is similar to the adjustment of the transverse flexible shaft arc-changing unit 1, so as to form a blowing surface adapted to the shape of the target glass and ensure the constancy of the blowing distance of the upper air grille.

[0075] Example 6: The flexible shaft bending glass forming equipment of the present invention can still be compatible with the forming of conventional hyperbolic glass. At this time, in the transverse direction of the glass, the middle screw rod lifting mechanisms of multiple transverse flexible shaft arc-changing units remain stationary, and the side screw rod lifting mechanisms on both sides rise and fall, so that multiple flexible shaft roller paths 2 are respectively bent into arcs transversely, and the middle heights of multiple flexible shaft roller paths are the same; in the longitudinal direction of the glass, arcs can be formed through the action of the lower longitudinal arc-changing mechanism, so that all flexible shaft roller paths 2 fit to form a forming surface adapted to the shape of the target glass, and the ordinary hyperbolic glass as shown in Figure 13 can be formed.

[0076] It should be noted that the equipment and forming method of the present utility model can be applicable to forming hyperbolic glass with complex shapes, not limited to saddle-shaped curved glass, that is, not limited to complex hyperbolic glass with sudden changes in local bending shapes; it can also form other complex shapes such as J-shaped in the transverse direction and having a certain arc in the longitudinal direction, that is, form glass that is bent in different directions or degrees in two directions along the glass conveying direction and perpendicular to the glass conveying direction. It can be foreseen that other shapes of glass can also be formed. Here, the different directions refer to different degrees of upward or downward bending in two directions along the glass conveying direction and perpendicular to the glass conveying direction respectively.

[0077] In the present utility model, "longitudinal direction" refers to the glass conveying direction, and "transverse direction" refers to the direction perpendicular to the glass conveying direction.

[0078] The above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit it. Those of ordinary skill in the art should understand that the specific implementation manners of the present utility model can be modified or equivalently replaced by referring to the above embodiments. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present utility model are within the protection scope of the claims pending for approval.

Claims

1. A flexible shaft bending glass forming device, comprising a lower forming device (100), the lower forming device (100) includes a plurality of transverse flexible shaft variable arc units (1) arranged at intervals along the glass conveying direction, the transverse flexible shaft variable arc unit (1) includes a flexible shaft roller path (2), a side screw rod lifting mechanism and a lower support cross beam (7), the flexible shaft roller path (2) is connected to the side screw rod lifting mechanism on the lower support cross beam (7), and is characterized in that: The lateral flexible shaft arc-changing unit (1) further includes a middle screw rod lifting mechanism fixed on the lower support cross beam (7). The middle screw rod lifting mechanism includes a middle screw rod (10). The top end of the middle screw rod (10) is connected to the middle part of the flexible shaft roller path (2) to drive the independent lifting of the middle part of the flexible shaft roller path (2). The side screw rod lifting mechanisms and the middle screw rod lifting mechanism of each lateral flexible shaft arc-changing unit (1) are respectively adjusted to their respective predetermined heights, and a predetermined forming surface is jointly simulated by all the flexible shaft roller paths (2).

2. The glass forming device according to claim 1, characterized in that: The middle screw rod lifting mechanism further includes a support seat (13). The top end of the middle screw rod (10) is fixedly connected to the support seat (13), and a flexible shaft middle transmission mechanism (12) is arranged on the support seat (13).

3. The glass forming device according to claim 2, wherein: A guiding component is further arranged between the support seat (13) and the lower support cross beam (7). The guiding component includes a guiding column (14) and a guiding sleeve (15) that slide relative to each other. The guiding column (14) is fixed on the support seat (13), and the guiding sleeve (15) is arranged on the lower support cross beam (7).

4. The glass forming device according to claim 1, characterized in that: An elastic member (4) and a flexible shaft support (3) are further arranged between the flexible shaft roller path and the side screw rod (6) of the side screw rod lifting mechanism.

5. The glass forming device according to claim 4, wherein: The lower forming device (100) further includes a wind box type lower air grille (16). The wind box type lower air grille (16) is located between adjacent lateral flexible shaft arc-changing units (1). The wind box type lower air grille (16) includes a plurality of lower air boxes (17) arranged along the length direction of the flexible shaft roller path (2). The lower air boxes (17) are connected to the elastic member (4) through air box mounting seats (18).

6. The glass forming device according to any one of claims 1-5, characterized in that: The lower forming device (100) further includes two lower longitudinal arc-changing mechanisms, which are respectively arranged at both ends of the lower support cross beam (7).

7. The glass forming device according to claim 1, wherein: It further includes an upper blowing device (200). The upper blowing device (200) includes a plurality of upper air grille lateral arc-changing units (19) arranged at intervals along the glass conveying direction. The upper air grille lateral arc-changing units (19) and the lateral flexible shaft arc-changing units (1) are arranged corresponding to each other up and down.

8. The glass forming device according to claim 7, characterized in that: The upper air grille lateral arc-changing unit (19) includes an upper support cross beam (24), a wind box type upper air grille (20), an elastic member (4), a middle screw rod lifting mechanism and a plurality of side screw rod lifting mechanisms. The wind box type upper air grille (20) includes a plurality of upper air boxes arranged along the length direction of the elastic member (4), and the upper air boxes are connected to the elastic member (4). The middle screw rod lifting mechanism and the plurality of side screw rod lifting mechanisms are arranged on the upper support cross beam (24) at intervals along the length direction of the upper support cross beam (24). The side screw rod (6) of the side screw rod lifting mechanism and the middle screw rod (10) of the middle screw rod lifting mechanism are respectively connected to the elastic member (4).

9. The glass forming device according to claim 8, wherein: The upper air grille lateral arc-changing unit (19) further includes a guiding component, which is used to provide guidance for the middle screw rod lifting mechanism.

10. The glass forming device according to any one of claims 7-9, characterized in that: The upper blowing device (200) further includes two upper air grille longitudinal arc-changing mechanisms, which are respectively arranged at both ends of the upper support cross beam (24).

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