Curved surface glass tempering system and tempering method thereof

Abstract

The invention relates to the technical field of glass toughening, and discloses a curved surface glass toughening system and a toughening method thereof.The lifting mechanism comprises a first lifting assembly, a second lifting assembly and a third lifting assembly which are installed on a rack; the conveying mechanism further comprises a first conveying assembly, a second conveying assembly and a plurality of flexible shaft transmission rollers. The lower air outlet assembly and the upper air outlet assembly each comprise a plurality of air outlet boxes and a plurality of air grid bars. The four corners of the upper arc bending mechanism are connected with the output end of the first lifting assembly. The two ends of the lower arc bending mechanism at the input end are connected with the output end of the third lifting assembly. The two ends of the lower arc bending mechanism at the output end are connected with the output end of the second lifting assembly through cables correspondingly. The second lifting assembly is used for lifting the lower arc bending mechanism of the output end step by step; the top face of the first conveying assembly, the top faces of the flexible shaft transmission rollers and the plane where the top face of the second conveying assembly is located are sequentially connected. And the plurality of air outlet boxes are respectively communicated with the corresponding air grid bars and output cooling air.

Description

Technical Field

[0001] The present invention relates to the technical field of glass tempering, and in particular to a curved glass tempering system and a tempering method thereof. Background Art

[0002] Curved tempered glass not only has the same safety performance and strength as tempered glass, but also has a beautiful and smooth curved surface, which can meet the higher aesthetic requirements of modern architecture. Therefore, curved tempered glass is widely used in glass curtain walls, skylights, sightseeing elevators, interior decoration and furniture.

[0003] In the existing curved glass bending equipment, when forming the two ends of a longer glass in steps, the lower curved wind grille uses a fixed template to fix the curvature of the output end of the tempered glass. The forming and quenching and tempering of the tempered glass are completed in different chambers, respectively, resulting in a complex structure of the equipment and a large space occupied, which not only increases the cost of using the equipment, but also reduces the versatility of the equipment. Summary of the invention

[0004] In view of the above-mentioned shortcomings, the first purpose of the present invention is to provide a curved glass tempering system to solve the problems of complex structure and low versatility of glass bending equipment in the prior art.

[0005] The second object of the present invention is to provide a method for performing step-by-step bending and forming using the above curved glass tempering system to complete the bending and tempering of glass with a longer length.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A curved glass tempering system comprises a top plate stage, a heating furnace, a curved air grille and a bottom plate stage arranged in sequence along the X direction, and a lifting mechanism; the curved air grille comprises an upper curved air grille and a lower curved air grille; the upper curved air grille comprises an upper air outlet component and an upper curved arc mechanism; the lower curved air grille comprises a transmission mechanism, a lower air outlet component and a lower curved arc mechanism, and is characterized in that:

[0008] The lifting mechanism comprises a first lifting assembly, a second lifting assembly and a third lifting assembly respectively mounted on the frame; the conveying mechanism further comprises a first conveying assembly, a second conveying assembly and a plurality of flexible shaft transmission rollers; the lower air outlet assembly and the upper air outlet assembly both comprise a plurality of air outlet boxes and a plurality of wind grille bars;

[0009] The four corners of the upper arc bending mechanism are respectively connected to the output end of the first lifting assembly through cables; the two ends of the lower arc bending mechanism at the input end are respectively connected to the output end of the third lifting assembly through cables; the two ends of the lower arc bending mechanism at the output end are respectively connected to the output end of the second lifting assembly through cables; the second lifting assembly is used to step by step lift the two ends of the lower arc bending mechanism at the output end to the target curvature, so as to enable the segmented shaping of the tempered glass;

[0010] The first transmission component is installed on the lower bending arc mechanism at the input end; the second transmission component is installed on the lower bending arc mechanism at the output end; the plurality of soft shaft transmission rollers extend along the X direction and are mounted on the top surfaces of the plurality of wind grille bars of the lower bending wind grille; the plane where the top surface of the first transmission component is located, the plane where the top surfaces of the plurality of soft shaft transmission rollers are located and the plane where the top surface of the second transmission component is located are connected in sequence and constitute a transmission surface of the glass to be tempered; the plurality of air outlet boxes are arranged at intervals along the Y axis direction, and the plurality of air outlet boxes are respectively connected with the corresponding wind grille bars; the plurality of air outlet boxes opposite to each other up and down respectively output cooling air to the transmission surface to quench and temper the glass to be tempered.

[0011] Further, the transmission mechanism includes a driving device and a transmission gear; the driving device includes a motor reducer, a coupling assembly, a linkage rod, a first cross universal coupling, a first connecting shaft and a linkage assembly;

[0012] The motor reducer and the linkage rod are respectively installed on the wind grid bars located on the outside; the motor reducer is transmission-connected to the outer circumference of the linkage rod through the coupling assembly, and the plurality of flexible shaft transmission rollers are transmission-connected to the outer circumference of the linkage rod through the linkage assembly; the first transmission assembly and the second transmission assembly are transmission-connected to the corresponding transmission gears respectively;

[0013] One end of the two first connecting shafts is respectively inserted into the two transmission gears, and the other ends of the two first connecting shafts extend relative to each other; the two ends of the linkage rod are respectively connected to one end of the two first cross universal couplings, and the other ends of the two first cross universal couplings are respectively connected to the other ends of the two first connecting shafts.

[0014] Furthermore, it also includes an air supply mechanism;

[0015] The air supply mechanism comprises an upper air balancing air box and a lower air balancing air box;

[0016] The upper averaging air box and the lower averaging air box are installed above and below the frame respectively;

[0017] The multiple wind grille bars located at the upper air outlet component are connected to the upper averaging air box through pipelines respectively; the multiple wind grille bars located at the lower air outlet component are connected to the lower averaging air box through pipelines respectively.

[0018] Preferably, two ends of the air outlet box are exposed on both sides of the wind grille bar;

[0019] Both end surfaces of the air outlet box located at the upper curved air grille are inclined surfaces; one side of the inclined surface close to the air grille bar is a straight side, and the other side of the inclined surface away from the air grille bar is an arc side;

[0020] The distance between the two straight edges located on the same air outlet box is smaller than the distance between the two arc-shaped edges;

[0021] Along the central axis of the wind grille bar, a plurality of the air outlet boxes are staggered and distributed.

[0022] Furthermore, the downward curved wind grille also includes a support seat, and the support seat includes a connecting seat, a joint bearing and two lateral hinge seats;

[0023] The flexible shaft transmission roller comprises a flexible shaft and a conveying wheel;

[0024] The plurality of flexible shafts extend along the Y direction and are arranged in parallel, and the outer circumference of the flexible shaft is provided with a plurality of conveying wheels;

[0025] A rotating cavity is provided in the middle of the connecting seat; the two ends of the connecting seat extend in directions perpendicular to the axis of the rotating cavity respectively; a rotating cavity is provided at the top of the lateral articulated seat; the two ends of the connecting seat are rotatably inserted in the two rotating cavities respectively; the joint bearing is rotatably installed in the rotating cavity; the bottom of the lateral articulated seat is fixed to the top surface of the corresponding wind grille bar;

[0026] A plurality of flexible shafts extend respectively along the X direction, and each of the flexible shafts passes through a plurality of the joint bearings located above different wind grid bars in sequence; a plurality of the conveying wheels are sleeved on the outer circumference of the flexible shaft; and at least one conveying wheel is distributed between two adjacent rotating chambers;

[0027] The Z-direction wheel surfaces of the plurality of conveying wheels form the third conveying surface for supporting and conveying the glass to be tempered.

[0028] Furthermore, the transmission mechanism also includes two support tubes, a plurality of transmission bearings, a plurality of second connecting shafts and a plurality of second cross universal couplings;

[0029] The support tube extends along the Y direction, and the two support tubes are arranged from the outside close to the two wind grille bars located at the edge;

[0030] The plurality of transmission bearings are divided into two groups, and the plurality of transmission bearings in the same group are arranged at intervals on the top surface of a support tube along the Y direction;

[0031] One end of the second connecting shaft is sleeved with the transmission wheel, the other end of the second connecting shaft passes through the transmission bearing and is connected to one end of the second cross universal coupling, and the other ends of the two second cross universal couplings are respectively connected to the two ends of the flexible shaft.

[0032] Furthermore, the support seat also includes two sleeves;

[0033] Two ends of the connecting seat are respectively provided with two shaft sleeves;

[0034] The two ends of the connecting seat are rotatably embedded in the two rotating chambers through the corresponding shaft sleeves;

[0035] The shaft sleeve is provided with a limiting ring;

[0036] The limiting ring surrounds the circumferential edge of a side of the shaft sleeve close to the rotating cavity, and the limiting ring is used to abut against the edge of the corresponding rotating cavity.

[0037] Furthermore, the present invention provides a method for tempering curved glass, using the curved glass tempering system described above, comprising the following steps:

[0038] S1) when the tempered glass is in the heating furnace and is being heated, the four corners of the upward curved air grille are lifted to a target curvature through the first lifting assembly and the upward curved arc mechanism;

[0039] S2) the first end of the tempered glass that has been heated passes over the top surface of the lower bending arc mechanism at the input end, which is a horizontal plane, and the second lifting assembly lifts the lower bending arc mechanism at the output end to a first curvature;

[0040] S3) when the middle part of the to-be-tempered glass follows the head end of the to-be-tempered glass over the top surface of the lower bending arc mechanism at the input end, the second lifting assembly gradually rises and lifts the lower bending arc mechanism at the output end upward to the target curvature;

[0041] S4) when the rear end of the tempered glass passes over the top surface of the lower bending arc mechanism at the input end, the third lifting assembly lifts the lower bending arc mechanism at the input end to a target curvature, thus completing the bending of the tempered glass;

[0042] S5) Cooling air is output to the upper and lower surfaces of the bent glass through the upper and lower air boxes, respectively, so as to quench and temper the glass, and then the tempered glass is output to the lower sheet platform through the second conveying assembly.

[0043] Specifically, when the target curvature is greater than a threshold value, the step-by-step bending glass forming method includes steps S1), S2), S3), S4) and S5), and the first curvature is equal to the threshold value;

[0044] When the target curvature is less than or equal to a threshold value, the first curvature is equal to the target curvature; the step-by-step bending glass forming method comprises steps S1), S2), S4) and S5), and step S3) is removed.

[0045] The beneficial effects of the technical solution of the present invention are as follows: the curved glass tempering system, the transmission connection structure between the two ends of the linkage rod and the two first cross universal couplings, enables the transmission mechanism to drive the first transmission component, the second transmission component and multiple soft shaft transmission rollers to operate independently, and the two ends of the lower bending arc mechanism at the output end are raised in steps, so that the tempered glass is bent and formed in steps above the multiple wind grid bars, and the quenching and tempering of the glass can be completed in situ during the forming process. The structure is simple, the cost is low, and the versatility is good.

[0046] Furthermore, the present invention proposes a step-by-step bending glass forming method, which can control the second lifting component to lift the curvature and height of the lower bending arc mechanism at the output end according to the output of the glass to be tempered, so as to improve the bending forming quality of the curved glass, and perform quenching and tempering in situ after the bending forming is completed, which can effectively improve the utilization rate and versatility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a top view of the curved glass tempering system for step-by-step bending molding of the present invention;

[0048] Figure 2 It is a schematic diagram of the installation structure of the upper curved air grille of the step-by-step bending and forming curved glass tempering system of the present invention in the Y direction;

[0049] Figure 3 yes Figure 2 A schematic diagram of the installation structure in the X-direction when the upper curved wind grille of the step-by-step bending and forming curved glass tempering system of the present invention is in a horizontal state;

[0050] Figure 4 for Figure 2 An enlarged view of part A;

[0051] Figure 5 It is a structural schematic diagram of the input end portion of the upward curved wind grille of the present invention;

[0052] Figure 6 It is a structural schematic diagram of the output end portion of the upward curved wind grille of the present invention;

[0053] Figure 7 for Figure 5An enlarged view of part B;

[0054] Figure 8 is a schematic diagram of the installation structure of the second cross universal coupling of the present invention;

[0055] Fig. 9 for Figure 8 An enlarged view of part C;

[0056] Fig.10 It is a structural schematic diagram of the support seat;

[0057] Fig.11 It is a schematic diagram of the installation structure of the support seat and the shaft sleeve;

[0058] Fig.12 The schematic diagram of the installation structure of the wind grille strips and the air outlet box located at the upper curved wind grille;

[0059] Fig.13 The schematic diagram of the installation structure of the wind grille strips and the air outlet box located at the lower curved wind grille;

[0060] Among them: frame 1; upper curved air grille 2; lower curved air grille 3; air supply mechanism 4; lifting mechanism 5; heating furnace 6; upper sheet table 7; lower sheet table 8;

[0061] Support seat 32; transmission mechanism 33; lower air outlet assembly 34; lower bending arc mechanism 37; transmission bearing 33939; upper averaging bellows 41; lower averaging bellows 42; first lifting assembly 51; second lifting assembly 52; third lifting assembly 53; first transmission surface 301; second transmission surface 302; third transmission surface 303; lateral articulated seat 321; connecting seat 322; joint bearing 323; bushing 324; first transmission assembly 330; flexible shaft transmission roller 331; second transmission assembly 332; second cross universal coupling 333; support tube 334; transmission gear 3 35; second connecting shaft 336; connecting plate 337; driving device 338; transmission bearing 339; air outlet box 341; wind grille bar 342; flexible shaft 3311; conveying wheel 3312; rotating chamber 3210; rotating chamber 3221; limiting ring 3241; motor reducer 3381; coupling assembly 3382; linkage rod 3384; transmission wheel 3385; first cross universal coupling 3386; first connecting shaft 3387; inclined surface 3412; coupling gear 33821; driven wheel 33822; arc edge 34121; straight edge 34122. DETAILED DESCRIPTION

[0062] The following is combined with Figure 1-13 The technical solution of the present invention is further illustrated by specific implementation methods.

[0063] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0064] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, which can be said to be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] A curved glass tempering system comprises an upper plate stage 7, a heating furnace 6, a bending air grid installed on a frame 1 and a lower plate stage 8, and a lifting mechanism 5, which are sequentially arranged along the X direction; the bending air grid comprises an upper bending air grid 2 and a lower bending air grid 3; the upper bending air grid 2 comprises an upper air outlet component 21 and an upper bending arc mechanism 22; the lower bending air grid 3 comprises a conveying mechanism 33, a lower air outlet component 34 and a lower bending arc mechanism 37;

[0066] The lifting mechanism 5 includes a first lifting assembly 51, a second lifting assembly 52 and a third lifting assembly 53 respectively mounted on the frame 1; the conveying mechanism 33 also includes a first conveying assembly 330, a second conveying assembly 332 and a plurality of flexible shaft transmission rollers 331; the lower air outlet assembly 34 and the upper air outlet assembly 21 both include a plurality of air outlet boxes 341 and a plurality of wind grid bars 342;

[0067] The four corners of the upper arc bending mechanism 22 are connected to the output end of the first lifting assembly 51 through cables respectively; the two ends of the lower arc bending mechanism 37 at the input end are connected to the output end of the third lifting assembly 53 through cables respectively; the two ends of the lower arc bending mechanism 37 at the output end are connected to the output end of the second lifting assembly 52 through cables respectively; the second lifting assembly 52 is used to step by step lift the two ends of the lower arc bending mechanism 37 at the output end to the target curvature, so as to make the segmented shaping of the tempered glass;

[0068] The first conveying assembly 330 is installed on the lower bending arc mechanism 37 at the input end; the second conveying assembly 332 is installed on the lower bending arc mechanism 37 at the output end; the plurality of soft shaft transmission rollers 331 extend along the X direction and are mounted on the top surfaces of the plurality of wind grille bars 342 of the lower bending wind grille 3; the plane where the top surface of the first conveying assembly 330 is located, the plane where the top surfaces of the plurality of soft shaft transmission rollers 331 are located, and the plane where the top surface of the second conveying assembly 332 is located are connected in sequence and constitute a conveying surface for the glass to be tempered; the plurality of air outlet boxes 341 are arranged at intervals along the Y axis direction, and the plurality of air outlet boxes 341 are respectively connected to the corresponding wind grille bars 342; the plurality of air outlet boxes 341 opposite to each other above and below respectively output cooling air to the conveying surface to quench and temper the glass to be tempered.

[0069] like Figure 1-4 In the step-by-step bending and forming curved glass tempering system of the present invention, an upper curved air grille 2 and a lower curved air grille 3 are installed on a frame 1 in a vertically opposite manner.

[0070] like Figure 5 , Figure 6 , Fig.10 and Fig.11 As shown, a plurality of wind grille bars 342 extend along the X direction and are arranged in parallel, the two ends of the wind grille bars 342 are spherically hinged with two downward curved arc mechanisms 37 respectively, a plurality of air outlet boxes 341 are installed between the two flexible shaft drive rollers 331, the air outlet boxes 341 extend along the Y axis direction, and the air outlet boxes 341 between the two flexible shaft drive rollers 331 are arranged at intervals along the Y axis direction.

[0071] The top surfaces of the two lower bending arc mechanisms 37 are respectively mounted with a first conveying assembly 330 and a second conveying assembly 332 for conveying glass. The top surfaces of multiple first conveying assemblies 330 form a first conveying surface 301, the top surfaces of multiple soft shaft drive rollers 331 form a second conveying surface 302, and the top surfaces of multiple second conveying assemblies 332 form a third conveying surface 303. The three conveying surfaces are connected in sequence to form a conveying surface for continuously transporting tempered glass.

[0072] When the glass heated and softened by the heating furnace 6 is transported to the top of the plurality of wind grid bars 342 through the first conveying assembly 330 located above the lower bending arc mechanism 37 at the input end, the four corners of the upper bending wind grid 2 have been lifted and bent into the target arc shape, and the two corners of the lower bending arc mechanism 37 connected to the output end of the upper bending wind grid 2 (i.e., the end away from the heating furnace 6) are lifted and bent into the initial arc shape, and the lower bending arc mechanism 37 connected to the input end of the wind grid bar 342 is kept in a horizontal state until the entire piece of glass is completely output from the heating furnace. During this period, the middle part of the horizontal glass can be continuously input into the upper bending wind grid 2 through the first conveying assembly 330. To the top of multiple wind grid bars 342, and at the same time, by step-by-step raising the two ends of the lower bending arc mechanism 37 at the output end, the lower bending arc mechanism 37 at the output end is raised step by step to the target curvature, so that the output end and the middle part of the glass are bent into shape in steps. When the whole piece of glass is completely output from the heating furnace 6 and enters above the multiple wind grid bars 342, the lower bending arc mechanism 37 at the input end is bent into the target curvature, and the input end of the glass is formed by abutting against the corresponding upper bending arc mechanism, thereby forming the whole piece of glass with a target curved surface, and finally outputting cooling air to the surface of the glass to be tempered through multiple air outlet boxes 341 to quench and temper the formed glass.

[0073] The glass to be tempered can not only be formed in steps on the top surface of the multiple soft shaft drive rollers 331, but can also be quenched and tempered through the multiple air outlet boxes 341 correspondingly distributed above and below, which has good space utilization.

[0074] Further, the transmission mechanism 33 includes a driving device 338 and a transmission gear 335; the driving device 338 includes a motor reducer 3381, a coupling assembly 3382, a linkage rod 3384, a first cross universal coupling 3386, a first connecting shaft 3387 and a linkage assembly;

[0075] The motor reducer 3381 and the linkage rod 3384 are respectively installed on the wind grid bar 342 located on the outside; the motor reducer 3381 is connected to the outer peripheral surface of the linkage rod 3384 through the coupling assembly 3382, and the plurality of flexible shaft transmission rollers 331 are connected to the outer peripheral surface of the linkage rod 3384 through the linkage assembly; the first transmission assembly 330 and the second transmission assembly 332 are connected to the corresponding transmission gear 335 respectively;

[0076] One end of the two first connecting shafts 3387 is respectively inserted into the two transmission gears 335, and the other ends of the two first connecting shafts 3387 extend relative to each other; the two ends of the linkage rod 384 are respectively connected to one end of the two first cross universal couplings 3386, and the other ends of the two first cross universal couplings 3386 are respectively connected to the other ends of the two first connecting shafts 3387.

[0077] like Figure 4-6 As shown, during the glass forming process, curved inclined surfaces are formed on both sides of the lower curved wind grid 3, and the two ends of the linkage rod 384 are respectively connected to the transmission connection structure of the two first cross universal couplings 3386 and the two first connecting shafts 3387, so that the motor reducer 3381 can drive the first transmission component 330, the second transmission component 332 and the multiple soft shaft transmission rollers 331 to rotate synchronously through the linkage rod 3384, so that the linkage rod 3384 and the two lower curved arc mechanisms 37 located at the two ends of the lower curved wind grid 3 can operate independently, without being affected by the bending of the lower air outlet component 34 and the inclination of the linkage rod 3384, and the operation stability of the transmission mechanism 33 and the two lower curved arc mechanisms 37 can be improved.

[0078] like Figure 6 In the preferred embodiment shown, the linkage assembly includes multiple transmission belts, multiple linkage wheels 3383 and multiple transmission wheels 3385; the transmission wheel 3385 is sleeved on one end of the soft shaft transmission roller 331; multiple linkage wheels 3383 are sleeved on the outer circumference of the linkage rod 3384, and the linkage wheels 3383 correspond to the transmission wheels 3385 one by one and are connected through transmission belts; the motor reducer 3381 drives the linkage rod 3384, multiple linkage wheels 3383 and multiple transmission wheels 3385 to rotate synchronously through the cooperation of the coupling 3821 and the driven wheel 33822.

[0079] Furthermore, it also includes an air supply mechanism 4;

[0080] The air supply mechanism 4 includes an upper air box 41 and a lower air box 42;

[0081] The upper averaging air box 41 and the lower averaging air box 42 are respectively installed above and below the frame 1;

[0082] The multiple wind grille bars 342 located at the upper air outlet component 21 are respectively connected to the upper averaging air box 41 through pipes; the multiple wind grille bars 3421 located at the lower air outlet component 34 are respectively connected to the lower averaging air box 42 through pipes.

[0083] like Figure 2 and Figure 3 As shown, the cooling air outputted from the corresponding plurality of air outlet boxes 341 to the formed glass can be evenly distributed through the upper averaging air box 41 and the lower averaging air box 42, thereby improving the quality and efficiency of the glass quenching and tempering.

[0084] Furthermore, both ends of the air outlet box 341 are exposed on both sides of the wind grille bar 342;

[0085] Both end surfaces of the air outlet box 341 located at the upper curved air grille 2 are inclined surfaces 3412; one side of the inclined surface 3412 close to the air grille bar 342 is a straight edge 34122, and the other side of the inclined surface 3412 away from the air grille bar 342 is an arc edge 34121;

[0086] The distance between the two straight edges 34122 located in the same air outlet box 341 is smaller than the distance between the two arc edges 34121;

[0087] Along the central axis of the wind grille bar 342 , the plurality of air outlet boxes 341 are staggeredly distributed.

[0088] like Fig. 9 As shown, during operation, the upper arc bending mechanism 37 drives the multiple wind grid bars 342 above to form an arc surface protruding toward the glass to be tempered, so that the two ends of the two opposite air outlet boxes 341 located on the two adjacent wind grid bars 342 are close to each other, and the end faces of both ends of the air outlet boxes 341 are both set with inclined surfaces 3412, and the distance between the two straight edges 34122 located on the same air outlet box 341 is smaller than the distance between the two arc edges 34121, which can avoid the sides of the two adjacent air outlet boxes 341 along the length direction away from the glass to be tempered from abutting against each other and causing interference, and can avoid the phenomenon that the arc surface formed due to the interference of the two air outlet boxes 341 does not reach the required radial depth.

[0089] The multiple air outlet boxes 341 are staggered relative to the central axis of the wind grid bar 342, so that the gaps between two adjacent and close air outlet boxes 341 are staggered, so that the end surfaces of the multiple air outlet boxes 341 exposed to the same wind grid bar 342 are not in the same plane parallel to the central axis of the wind grid bar 342, which can avoid the phenomenon that the corresponding parts of the glass are not blown by cooling air during the tempering process, thereby avoiding affecting the tempering quality of the glass.

[0090] Furthermore, the downward curved wind grille 3 further includes a support seat 32, and the support seat 32 includes a connecting seat 322, a joint bearing 323 and two lateral hinge seats 321;

[0091] The flexible shaft transmission roller 331 includes a flexible shaft 3311 and a conveying wheel 3312;

[0092] The plurality of flexible shafts 3311 extend along the Y direction and are arranged in parallel, and the outer circumference of the flexible shaft 3311 is provided with a plurality of conveying wheels 3312;

[0093] A rotating cavity 3221 is provided in the middle of the connecting seat 322; both ends of the connecting seat 322 extend in directions perpendicular to the axis of the rotating cavity 3221; a rotating cavity 3210 is provided at the top of the lateral articulated seat 321; both ends of the connecting seat 322 are rotatably inserted into the two rotating cavities 3210; the joint bearing 323 is rotatably installed in the rotating cavity 3221; the bottom of the lateral articulated seat 321 is fixed to the top surface of the corresponding wind grille bar 342;

[0094] The plurality of flexible shafts 3311 extend along the X direction respectively, and each of the flexible shafts 3311 passes through the plurality of joint bearings 323 located above different wind grid bars 342 in sequence; the outer circumference of the flexible shaft 3311 is covered with a plurality of conveying wheels 3312; at least one conveying wheel 3312 is distributed between two adjacent rotating chambers 3221;

[0095] The Z-direction wheel surfaces of the plurality of conveying wheels 3312 form the third conveying surface 302 for supporting and conveying the glass to be tempered.

[0096] Figure 5-11 As shown, the flexible shaft 3311 can rotate in the plurality of support seats 32 via the joint bearings 323 , so that the flexible shaft 3311 will not get stuck and fail to rotate during the bending process.

[0097] At least one conveying wheel 3312 is arranged between two adjacent support seats 32, and the Z-direction wheel surfaces of the multiple conveying wheels 3312 located on the multiple flexible shafts 3311 form the third conveying surface 302 for supporting and conveying the glass to be tempered, so that the multiple flexible shafts 3311 can drive the multiple conveying wheels 3312 to rotate synchronously and convey the glass to be tempered along the running direction.

[0098] The two ends of the connecting seat 322 are rotatably embedded in the rotating cavity 3210 at the top of the two lateral hinge seats 321, so that the two ends of the connecting seat 322 can rotate along with the bending of the flexible shaft 3311, thereby preventing the flexible shaft 3311 from being blocked during the bending process.

[0099] Furthermore, the transmission mechanism 33 also includes two support tubes 334, a plurality of transmission bearings 339, a plurality of second connecting shafts 336 and a plurality of second cross universal couplings 333;

[0100] The support tube 334 extends along the Y direction, and the two support tubes 334 are arranged from the outside close to the two wind grid bars 342 located at the edge;

[0101] The plurality of transmission bearings 339 are divided into two groups, and the plurality of transmission bearings 339 in the same group are arranged at intervals on the top surface of a support tube 334 along the Y direction;

[0102] One end of the second connecting shaft 336 is mounted with the transmission wheel 385 , and the other end of the second connecting shaft 336 passes through the transmission bearing 339 and is connected to one end of the second cross universal coupling 333 , and the other ends of the two second cross universal couplings 333 are respectively connected to the two ends of the flexible shaft 3311 .

[0103] like Figure 5-7 As shown, the motor reducer 3381 and the linkage rod 3384 are installed on the Y-direction side of the support tube 334, and the flexible shaft transmission roller 331 with a transmission bearing 339 is driven to rotate through the transmission wheel 3385, which can improve the operating stability and service life of the flexible shaft transmission roller 331.

[0104] like Figure 8 and Fig. 9 As shown, when the curvature of the glass to be prepared is greater than the bendability of the soft shaft 3311, the lower bending arc mechanism 37 drives the multiple wind grid bars 342 to bend and continuously increase the curvature to achieve the curvature required by the process; since the bendability of the soft shaft 3311 is limited, if the second cross universal joint 333 is not used, and an installation structure in which the two ends of the soft shaft 3311 are rigidly connected to the other ends of the two second connecting shafts 36, or an installation structure in which the two ends of the soft shaft 3311 are respectively inserted into two transmission wheels 385, the flexible shaft 3311 will be insufficiently bendable, and the flexible shaft 3311 will block the multiple wind grid bars 342 and cannot continue to bend, causing the lower bending arc mechanism 37 to drive the multiple wind grid bars 342 to become stuck in the process of continuously increasing the curvature, thereby hindering the operation of the bending arc mechanism 37 to drive the multiple wind grid bars 342 to bend.

[0105] Therefore, the two ends of the flexible shaft 3311 are respectively connected to the two second connecting shafts 336 inserted into the two transmission wheels 385 through the two second cross universal couplings 333, so that the lower bending arc mechanism 37 can drive the bending of multiple wind grid bars 342 without being limited by the bendability of the flexible shaft 3311, thereby avoiding the phenomenon of the lower bending arc mechanism 37 being stuck.

[0106] In a preferred embodiment, the transmission mechanism 33 further includes a connecting plate 337;

[0107] One end of the support tube 334 is connected to one end of the adjacent wind grid bar 342 through the connecting plate 337;

[0108] A plurality of the air outlet boxes 341 are installed between two adjacent flexible shafts 3311;

[0109] The air outlet boxes 341 extend along the Y-axis direction, and the plurality of air outlet boxes 341 located between two adjacent flexible shafts 3311 are arranged at intervals along the X-direction.

[0110] like Figure 8 and Fig. 9 As shown, one end of the support tube 334 and one end of the adjacent wind grid bar 342 are connected together by a connecting plate 337 , so that the support tube 334 can bend and move along with the adjacent wind grid bar 342 .

[0111] like Figure 4-7 As shown, cooling air can be blown to the tempered glass after bending through the air outlet box 341, so that the tempered glass can be quenched and tempered.

[0112] Furthermore, the support seat 32 also includes two shaft sleeves 324;

[0113] Two ends of the connecting seat 322 are respectively provided with two shaft sleeves 324;

[0114] The two ends of the connecting seat 322 are rotatably embedded in the two rotating chambers 3210 through the corresponding shaft sleeves 324;

[0115] The shaft sleeve 324 is provided with a limiting ring 3241;

[0116] The limiting ring 3241 surrounds the circumferential edge of a side of the shaft sleeve 324 close to the rotating cavity 3221 , and the limiting ring 3241 is used to abut against the edge of the corresponding rotating cavity 3210 .

[0117] like Fig.10 and Fig.11 As shown, the sleeve 324 can reduce the rigid contact and friction between the two ends of the connecting seat 322 and the rotating cavity 3210, and improve the rotation flexibility and service life of the two ends of the connecting seat 322.

[0118] like Fig.11 As shown, the limiting ring 3241 can improve the installation stability of the sleeve 324 and prevent the sleeve 324 from passing through the rotating cavity 3210 and getting loose during operation.

[0119] In a preferred embodiment, the connecting seat 322 includes two halves that are mirror-symmetrical in upper and lower directions, and the rotating cavity 3221 is formed by closing two semicircular grooves that are symmetrically distributed in upper and lower directions.

[0120] like Fig.10 and Fig.11 As shown, the connecting seat 322 is divided into two halves that are mirror-symmetrical, which is more conducive to processing and forming, and can also improve the installation convenience of the joint bearing 323.

[0121] Furthermore, the present invention provides a method for tempering curved glass, using the curved glass tempering system described above, comprising the following steps:

[0122] S1) When the tempered glass is in the heating furnace 6 and is being heated, the four corners of the upper curved air grille 2 are lifted to the target curvature through the first lifting assembly 51 and the upper curved arc mechanism 22;

[0123] S2) the first end of the tempered glass that has been heated passes over the top surface of the lower bending arc mechanism 37 at the input end, which is a horizontal plane, and the second lifting assembly 52 lifts the lower bending arc mechanism 37 at the output end to a first curvature;

[0124] S3) when the middle part of the tempered glass follows the head end of the tempered glass to pass over the top surface of the lower bending arc mechanism 37 at the input end, the second lifting assembly 52 gradually rises and lifts the lower bending arc mechanism 37 at the output end upward to the target curvature;

[0125] S4) when the rear end of the tempered glass passes over the top surface of the lower bending arc mechanism 37 at the input end, the third lifting assembly 53 lifts the lower bending arc mechanism 37 at the input end to the target curvature, that is, the bending forming of the tempered glass is completed;

[0126] S5) Cooling air is output to the upper and lower surfaces of the bent glass through the upper and lower air boxes 41, 42 and multiple air outlet boxes 341 to quench and temper the glass, and then the tempered glass is output to the lower sheet platform 8 through the second conveying assembly 3012.

[0127] The method for tempering curved glass of the present invention can control the second lifting component 52 to lift the curvature and height of the lower bending arc mechanism 37 at the output end according to the output of the glass to be tempered, so as to improve the bending quality of the curved glass, and perform quenching and tempering in situ after the bending is completed, which can effectively improve the utilization rate and versatility of the equipment.

[0128] Specifically, when the target curvature is greater than a threshold value, the method for tempering curved glass includes steps S1), S2), S3), S4) and S5), and the first curvature is equal to the threshold value;

[0129] When the target curvature is less than or equal to a threshold value, the first curvature is equal to the target curvature; the method for tempering curved glass includes steps S1), S2), S4) and S5), and step S3) is removed.

[0130] The above threshold value can be adjusted according to the thickness and material of the glass. Taking blue glass with a thickness of 5 mm as an example, the threshold value can be set to 40 mm / m.

[0131] Taking 5mm thick basket glass as an example, when the target curvature of the bent glass is greater than 40mm / m (that is, the chord height per unit meter of the curved surface of the final formed glass exceeds 40mm / m), if the curvature of the primary bent glass is too large and exceeds 40mm / m, it is easy to cause stress and cracks inside the glass during the bending process, and the glass is easy to explode during quenching and tempering.

[0132] At this time, with a curvature of 40 mm / m as a threshold, the output end of the glass is bent step by step to the target curvature according to steps S1) to S3), thereby preventing stress from being generated inside the glass during the bending process, thereby preventing the glass from bursting during quenching and tempering.

[0133] In summary, if Figure 1-13 In the embodiment of the present invention shown, the curved glass tempering system has a transmission connection structure between the two ends of the linkage rod 3384 and the two first cross universal couplings 3386, so that the transmission mechanism 33 can drive the first transmission component 330, the second transmission component 332 and the multiple soft shaft transmission rollers 331 to operate independently, and the two ends of the lower bending arc mechanism 37 at the output end are raised in steps, so that the tempered glass is bent and formed in steps above the multiple wind grid bars 342, and the quenching and tempering of the glass can be completed in situ. The structure is simple, the cost is low, and the versatility is good.

[0134] Furthermore, the present invention proposes a step-by-step bending glass forming method, according to the position where the first end of the tempered glass reaches the top of the lower bending wind grille 37, the second lifting component 52 is controlled in steps to lift the height and curvature of the lower bending arc mechanism 37 at the output end, so as to avoid stress inside the glass caused by excessive curvature of the glass due to one-time bending, thereby avoiding cracks or explosions in the glass.

[0135] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A curved glass tempering system, comprising a top plate table, a heating furnace, a bending air grille and a bottom plate table arranged in sequence along the X direction, and a lifting mechanism; the bending air grille comprises an upper bending air grille and a lower bending air grille; the upper bending air grille comprises an upper air outlet component and an upper bending arc mechanism; the lower bending air grille comprises a conveying mechanism, a lower air outlet component and a lower bending arc mechanism, characterized in that: The lifting mechanism comprises a first lifting assembly, a second lifting assembly and a third lifting assembly respectively mounted on the frame; the conveying mechanism further comprises a first conveying assembly, a second conveying assembly and a plurality of flexible shaft transmission rollers; the lower air outlet assembly and the upper air outlet assembly both comprise a plurality of air outlet boxes and a plurality of wind grille bars; The four corners of the upper arc bending mechanism are respectively connected to the output end of the first lifting assembly through cables; the two ends of the lower arc bending mechanism at the input end are respectively connected to the output end of the third lifting assembly through cables; the two ends of the lower arc bending mechanism at the output end are respectively connected to the output end of the second lifting assembly through cables; the second lifting assembly is used to step by step lift the two ends of the lower arc bending mechanism at the output end to the target curvature, so as to enable the segmented shaping of the tempered glass; The first transmission component is installed on the lower bending arc mechanism at the input end; the second transmission component is installed on the lower bending arc mechanism at the output end; the plurality of soft shaft transmission rollers extend along the X direction and are mounted on the top surfaces of the plurality of wind grille bars of the lower bending wind grille; the plane where the top surface of the first transmission component is located, the plane where the top surfaces of the plurality of soft shaft transmission rollers are located and the plane where the top surface of the second transmission component is located are connected in sequence and constitute a transmission surface of the glass to be tempered; the plurality of air outlet boxes are arranged at intervals along the Y axis direction, and the plurality of air outlet boxes are respectively connected with the corresponding wind grille bars; the plurality of air outlet boxes opposite to each other up and down respectively output cooling air to the transmission surface to quench and temper the glass to be tempered.

2. The curved glass tempering system according to claim 1, characterized in that: The transmission mechanism includes a driving device and a transmission gear; the driving device includes a motor reducer, a coupling assembly, a linkage rod, a first cross universal coupling, a first connecting shaft and a linkage assembly; The motor reducer and the linkage rod are respectively installed on the wind grid bars located on the outside; the motor reducer is transmission-connected to the outer circumference of the linkage rod through the coupling assembly, and the plurality of flexible shaft transmission rollers are transmission-connected to the outer circumference of the linkage rod through the linkage assembly; the first transmission assembly and the second transmission assembly are transmission-connected to the corresponding transmission gears respectively; One end of the two first connecting shafts is respectively inserted into the two transmission gears, and the other ends of the two first connecting shafts extend relative to each other; the two ends of the linkage rod are respectively connected to one end of the two first cross universal couplings, and the other ends of the two first cross universal couplings are respectively connected to the other ends of the two first connecting shafts.

3. The curved glass tempering system according to claim 1, characterized in that: It also includes an air supply mechanism; The air supply mechanism comprises an upper air balancing air box and a lower air balancing air box; The upper averaging air box and the lower averaging air box are respectively installed above and below the frame; The multiple wind grille bars located at the upper air outlet component are connected to the upper averaging air box through pipelines respectively; the multiple wind grille bars located at the lower air outlet component are connected to the lower averaging air box through pipelines respectively.

4. The curved glass tempering system according to claim 1, characterized in that: The two ends of the air outlet box are exposed on both sides of the wind grille bar; Both end surfaces of the air outlet box located at the upper curved air grille are inclined surfaces; one side of the inclined surface close to the air grille bar is a straight side, and the other side of the inclined surface away from the air grille bar is an arc side; The distance between the two straight edges located on the same air outlet box is smaller than the distance between the two arc-shaped edges; Along the central axis of the wind grille bar, a plurality of the air outlet boxes are staggered and distributed.

5. The curved glass tempering system according to claim 1, characterized in that: The downward curved wind grille also includes a support seat, and the support seat includes a connecting seat, a joint bearing and two lateral hinge seats; The flexible shaft transmission roller comprises a flexible shaft and a conveying wheel; The plurality of flexible shafts extend along the Y direction and are arranged in parallel, and the outer circumference of the flexible shaft is provided with a plurality of conveying wheels; A rotating cavity is provided in the middle of the connecting seat; the two ends of the connecting seat extend in directions perpendicular to the axis of the rotating cavity respectively; a rotating cavity is provided at the top of the lateral articulated seat; the two ends of the connecting seat are rotatably inserted in the two rotating cavities respectively; the joint bearing is rotatably installed in the rotating cavity; the bottom of the lateral articulated seat is fixed to the top surface of the corresponding wind grille bar; A plurality of flexible shafts extend respectively along the X direction, and each of the flexible shafts passes through a plurality of the joint bearings located above different wind grid bars in sequence; a plurality of the conveying wheels are sleeved on the outer circumference of the flexible shaft; and at least one conveying wheel is distributed between two adjacent rotating chambers; The Z-direction wheel surfaces of the plurality of conveying wheels form the third conveying surface for supporting and conveying the glass to be tempered.

6. The curved glass tempering system according to claim 5, characterized in that: The transmission mechanism also includes two support tubes, a plurality of transmission bearings, a plurality of second connecting shafts and a plurality of second cross universal couplings; The support tube extends along the Y direction, and the two support tubes are arranged from the outside close to the two wind grille bars located at the edge; The plurality of transmission bearings are divided into two groups, and the plurality of transmission bearings in the same group are arranged at intervals on the top surface of a support tube along the Y direction; One end of the second connecting shaft is sleeved with the transmission wheel, the other end of the second connecting shaft passes through the transmission bearing and is connected to one end of the second cross universal coupling, and the other ends of the two second cross universal couplings are respectively connected to the two ends of the flexible shaft.

7. The curved glass tempering system according to claim 5, characterized in that: The support seat also includes two shaft sleeves; Two ends of the connecting seat are respectively provided with two shaft sleeves; The two ends of the connecting seat are rotatably embedded in the two rotating chambers through the corresponding shaft sleeves; The shaft sleeve is provided with a limiting ring; The limiting ring surrounds the circumferential edge of a side of the shaft sleeve close to the rotating cavity, and the limiting ring is used to abut against the edge of the corresponding rotating cavity.

8. A method for tempering curved glass, characterized in that: The curved glass tempering system according to any one of claims 3 to 7 comprises the following steps: S1) when the tempered glass is in the heating furnace and is being heated, the four corners of the upward curved air grille are lifted to a target curvature through the first lifting assembly and the upward curved arc mechanism; S2) the first end of the tempered glass that has been heated passes over the top surface of the lower bending arc mechanism at the input end, which is a horizontal plane, and the second lifting assembly lifts the lower bending arc mechanism at the output end to a first curvature; S3) when the middle part of the to-be-tempered glass follows the head end of the to-be-tempered glass over the top surface of the lower bending arc mechanism at the input end, the second lifting assembly gradually rises and lifts the lower bending arc mechanism at the output end upward to the target curvature; S4) when the rear end of the tempered glass passes over the top surface of the lower bending arc mechanism at the input end, the third lifting assembly lifts the lower bending arc mechanism at the input end to a target curvature, thus completing the bending of the tempered glass; S5) Cooling air is output to the upper and lower surfaces of the bent glass through the upper and lower air boxes, respectively, so as to quench and temper the glass, and then the tempered glass is output to the lower sheet platform through the second conveying assembly.

9. The method for tempering curved glass according to claim 8, characterized in that: When the target curvature is greater than a threshold value, the step-by-step bending glass forming method comprises steps S1), S2), S3), S4) and S5), and the first curvature is equal to the threshold value; When the target curvature is less than or equal to a threshold value, the first curvature is equal to the target curvature; the step-by-step bending glass forming method comprises steps S1), S2), S4) and S5), and step S3) is removed.

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