Glass toughening device and step-by-step bending glass forming method using same

Abstract

The invention relates to the technical field of glass toughening, and discloses a glass toughening device and a step-by-step bending glass forming method using the same. The glass toughening device comprises an upper bending air grid and a lower bending air grid which are mounted on a rack; the lower bending air grid comprises a conveying mechanism, a lower air outlet assembly and a lower arc bending mechanism; the conveying mechanism comprises a driving device, a transmission gear and a plurality of flexible shaft transmission rollers; the driving device comprises a motor speed reducer, a coupling assembly, a linkage rod and a linkage assembly; the driving device further comprises a first cross universal coupling and a first connecting shaft; one ends of the two first connecting shafts are inserted into the two transmission gears respectively, and the other ends of the two first connecting shafts extend oppositely; the two ends of the linkage rod are connected with one ends of the two first cross-shaped universal couplings respectively, and the other ends of the two first cross-shaped universal couplings are connected with the other ends of the two first connecting shafts respectively. Bending forming can be achieved in the step-by-step rising process, and bending forming of glass with the large length is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of glass tempering, and in particular to a glass tempering device and a step-by-step bending glass forming method using the same. 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] The forming process of the glass bending equipment in the prior art is as follows: the glass to be tempered is softened by heating, and the entire piece of glass to be tempered is input into the forming area above the multiple wind grid bars between the two lower bending arc mechanisms through the top surface of the lower bending arc mechanism at the input end through the conveying mechanism, and then the four corners of the upper bending arc mechanism and the four corners of the lower bending arc mechanism are synchronously lifted and bent by the lifting mechanism, so that the two sides of the glass to be tempered are bent upward at the same time to form, and then the formed glass to be tempered is quenched and tempered by the cooling device.

[0004] When the length of the tempered glass to be bent is relatively long, if the glass bending equipment of the prior art is used, the heated and softened glass enters above the multiple wind grille bars through the top surface of the lower bending arc mechanism at the input end. When the output head end of the glass is not close to the lower bending arc mechanism at the output end, and the entire piece of glass has not been completely output from the heating furnace, the temperature of the head end of the output glass will decrease, resulting in insufficient softening of the glass at that part, and the required curvature cannot be achieved during bending, which leads to the failure of the bending forming of the tempered glass. Summary of the invention

[0005] In view of the above-mentioned shortcomings, the first purpose of the present invention is to provide a glass tempering device to solve the problem that the glass bending equipment in the prior art cannot complete the bending and forming of glass with a longer length.

[0006] The second object of the present invention is to provide a method for performing step-by-step bending and forming using the above glass tempering device to complete the bending and forming of glass with a longer length.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] A glass tempering device, comprising an upper curved air grille and a lower curved air grille installed on a frame; the upper curved air grille comprises an upper air outlet assembly and an upper curved arc mechanism; the lower curved air grille comprises a transmission mechanism, a lower air outlet assembly and a lower curved arc mechanism; the transmission mechanism comprises a driving device, a transmission gear and a plurality of flexible shaft transmission rollers; the driving device comprises a motor reducer, a coupling assembly, a linkage rod and a linkage assembly; the lower air outlet assembly and the upper air outlet assembly each comprise a plurality of air outlet boxes and a plurality of air grille bars; the plurality of air outlet boxes are respectively connected to the corresponding air outlet grilles; the transmission mechanism further comprises a first transmission assembly and a second transmission assembly, and the driving device further comprises a first cross universal coupling and a first connecting shaft;

[0009] The first transmission assembly is installed on the lower bending arc mechanism at the input end, and the top surface of the first transmission assembly forms the first transmission surface; the top surfaces of the plurality of soft shaft transmission rollers form the second transmission surface; the second transmission assembly is installed on the lower bending arc mechanism at the output end, and the top surface of the second transmission assembly forms the third transmission surface; the first transmission surface, the second transmission surface and the third transmission surface are connected in sequence; the first transmission assembly and the second transmission assembly are respectively connected to the corresponding transmission gears; 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 relatively; 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;

[0010] The plurality of air outlet boxes located at the upper air outlet assembly and the plurality of air outlet boxes located at the lower air outlet assembly correspond to each other one by one; the plurality of air outlet boxes facing each other are used to output cooling air from the upper and lower surfaces to the conveying surface respectively;

[0011] 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.

[0012] Furthermore, it also includes an air supply mechanism;

[0013] The air supply mechanism comprises an upper air balancing air box and a lower air balancing air box;

[0014] The upper averaging air box and the lower averaging air box are installed above and below the frame respectively;

[0015] 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.

[0016] Furthermore, it also includes a lifting mechanism, which includes a first lifting assembly, a second lifting assembly and a third lifting assembly;

[0017] The first lifting assembly, the second lifting assembly and the third lifting assembly are respectively installed on the frame;

[0018] The four corners of the upper arc bending mechanism are connected to the output end of the first lifting component through cables respectively; the two ends of the lower arc bending mechanism at the output end are connected to the output end of the second lifting component through cables respectively; the two ends of the lower arc bending mechanism at the input end are connected to the output end of the third lifting component through cables respectively.

[0019] Preferably, two ends of the air outlet box are exposed on both sides of the wind grille bar;

[0020] 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;

[0021] 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;

[0022] Along the central axis of the wind grille bar, a plurality of the air outlet boxes are staggered and distributed.

[0023] 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;

[0024] The flexible shaft transmission roller comprises a flexible shaft and a conveying wheel;

[0025] 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;

[0026] 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;

[0027] 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;

[0028] 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.

[0029] 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;

[0030] 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;

[0031] 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;

[0032] 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.

[0033] Furthermore, the support seat also includes two sleeves;

[0034] Two ends of the connecting seat are respectively provided with two shaft sleeves;

[0035] The two ends of the connecting seat are rotatably embedded in the two rotating chambers through the corresponding shaft sleeves;

[0036] The shaft sleeve is provided with a limiting ring;

[0037] 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.

[0038] Furthermore, the present invention provides a step-by-step bending glass forming method, using the above-mentioned glass tempering device, comprising the following steps:

[0039] S1) when the tempered glass is still being heated, the four corners of the upward curved wind grille are lifted to a target curvature by means of a first lifting assembly and an upward curved arc mechanism;

[0040] S2) when the tempered glass has been heated and the head end of the output tempered glass has passed the top surface of the lower bending arc mechanism at the input end, the lower bending arc mechanism at the output end is lifted to a first curvature by a second lifting assembly;

[0041] 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 lower bending arc mechanism at the output end is again lifted to the target curvature by the second lifting assembly;

[0042] 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 the target curvature, thus completing the bending of the tempered glass.

[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) and S4), 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) and S4), and step S3) is removed.

[0045] The beneficial effects of the technical solution of the present invention are as follows: in the glass tempering device, the two ends of the linkage rod are respectively connected to the transmission connection structure of the two first connecting shafts through two first cross universal couplings, so that the motor reducer can drive the first transmission assembly, the second transmission assembly and multiple soft shaft transmission rollers to rotate synchronously through the linkage rod, and the glass can enter the connected first transmission surface, the second transmission surface and the third transmission surface in sequence while keeping the lower bending arc mechanism at the input end in a horizontal state, so that the glass can be continuously input to the top of multiple wind grid bars, and bent into shape in the process of step-by-step raising, thereby realizing the bending shaping of glass with a longer length.

[0046] Furthermore, the present invention proposes a step-by-step bending glass forming method, which controls the height and curvature of the lower bending arc mechanism of the output end of the second lifting component in steps according to the position where the first end of the glass to be tempered reaches the upper side of the lower bending wind grille, thereby avoiding stress inside the glass due to excessive curvature of the one-time bent glass, and avoiding cracks or bursting of the tempered glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 1 is a schematic diagram of the installation structure of an embodiment of the step-by-step bending and forming glass tempering device of the present invention, viewed from the Y direction;

[0048] Figure 2 yes Figure 1 A schematic diagram of the installation structure in the X-direction when the step-by-step bending and forming glass tempering device of the present invention is in a horizontal state;

[0049] Figure 3 for Figure 1 An enlarged view of part A;

[0050] Figure 4 It is a structural schematic diagram of the input end portion of the downward curved air grille of one embodiment of the step-by-step bending and forming glass tempering device of the present invention;

[0051] Figure 51 is a schematic structural diagram of the output end portion of the lower curved air grille of an embodiment of the step-by-step bending and forming glass tempering device of the present invention;

[0052] Figure 6 for Figure 4 An enlarged view of part B;

[0053] Figure 7 It is a schematic diagram of the installation structure of an embodiment of the flexible shaft transmission roller of the present invention;

[0054] Figure 8 for Figure 7 An enlarged view of part C in FIG.

[0055] Fig. 9 is a schematic structural diagram of a support base according to an embodiment of the present invention;

[0056] Fig.10 It is a schematic diagram of the installation structure of the support seat and the bearing sleeve according to an embodiment of the present invention;

[0057] Fig.11 A schematic diagram of the installation structure of an embodiment of the wind grille bars and the air outlet box located at the upper curved wind grille;

[0058] Fig.12 A schematic diagram of the installation structure of an embodiment of a wind grille bar and an air outlet box located at a downward curved wind grille;

[0059] Wherein: frame 1; upper curved air grille 2; lower curved air grille 3; air supply mechanism 4; lifting mechanism 5;

[0060] Support seat 32; transmission mechanism 33; lower air outlet assembly 34; lower bending arc mechanism 37; 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 hinge 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 335; 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

[0061] The following is combined with Figure 1-12 The technical solution of the present invention is further illustrated by specific implementation methods.

[0062] 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.

[0063] 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.

[0064] A glass tempering device, comprising an upper curved air grille 2 and a lower curved air grille 3 mounted on a frame 1; the upper curved air grille 2 comprises an upper air outlet assembly 21 and an upper curved arc mechanism 22; the lower curved air grille 3 comprises a transmission mechanism 33, a lower air outlet assembly 34 and a lower curved arc mechanism 37; the transmission mechanism 33 comprises a driving device 338, a transmission gear 335 and a plurality of flexible shaft transmission rollers 331; the driving device 338 comprises a motor reducer 3381, a coupling assembly 3382, a linkage rod 3384 and a linkage assembly;

[0065] The lower air outlet assembly 34 and the upper air outlet assembly 21 each include a plurality of air outlet boxes 341 and a plurality of wind grille bars 342; the plurality of air outlet boxes 341 are respectively connected to corresponding air outlet grilles;

[0066] The transmission mechanism 33 further includes a first transmission assembly 330 and a second transmission assembly 332, and the driving device 338 further includes a first cross universal coupling 3386 and a first connecting shaft 3387;

[0067] The first transmission component 330 is installed on the lower bending arc mechanism 37 at the input end, and the top surface of the first transmission component 330 forms the first transmission surface 301; the top surfaces of the plurality of flexible shaft transmission rollers 31 form the second transmission surface 302; the second transmission component 332 is installed on the lower bending arc mechanism 37 at the output end, and the top surface of the second transmission component 332 forms the third transmission surface 303; the first transmission surface 301, the second transmission surface 302 and the third transmission surface 303 are connected in sequence;

[0068] The first transmission assembly 330 and the second transmission assembly 332 are respectively connected to the corresponding transmission gears 335; 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 relatively 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;

[0069] The plurality of air outlet boxes 341 located at the upper air outlet assembly 21 and the plurality of air outlet boxes 341 located at the lower air outlet assembly 34 correspond to each other vertically; the plurality of air outlet boxes 341 facing each other vertically are used to output cooling air from the upper and lower surfaces to the conveying surface respectively;

[0070] 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 transmission connected to the outer circumference of the linkage rod 3384 through the coupling assembly 3382, and the multiple soft shaft transmission rollers 331 are transmission connected to the outer circumference of the linkage rod 3384 through the linkage assembly.

[0071] like Figure 1-3 In the glass tempering device 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.

[0072] like Figure 4 , Figure 5 and Fig. 9 As shown, a plurality of wind grid bars 342 extend along the X direction and are arranged in parallel, a plurality of support seats 32 are arranged at intervals along the X direction on the top surface of a wind grid bar 342 facing the glass, the two ends of the wind grid bar 342 are spherically hinged with two lower bending arc mechanisms 37 respectively, and the opposite surfaces of the two lower bending arc mechanisms 37 are installed with transmission gears 335; a flexible shaft transmission roller 331 extends along the Y axis direction and is mounted above the top surface of the plurality of wind grid bars 342, a plurality of air outlet boxes 341 are installed between the two flexible shaft transmission rollers 331, the air outlet boxes 341 extend along the Y axis direction, the air outlet boxes 341 between the two flexible shaft transmission rollers 331 are arranged at intervals along the Y axis direction, the air outlet boxes 341 are connected to the wind grid bar 342 below and input cooling air, and cooling air can be blown to the bent glass through the air outlet boxes 341, so that the formed glass is quenched and tempered.

[0073] The operation of implementing segmented bending tempering using the glass tempering device of the present invention is as follows:

[0074] When the heated and softened glass 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 two corners of the lower bending arc mechanism 37 connected to the output end of the lower bending wind grid 3 (i.e., the end away from the glass heating furnace) have been lifted and bent into a preset arc shape in advance, and drive one end of the two linkage rods 3384 at the corresponding two corners to rise, so that the two corners of the glass at the output end form curved surfaces, and the lower bending arc mechanism 37 connected to the input end of the wind grid bar 342 (i.e., the lower bending arc mechanism 37 at the input end) is kept in a horizontal state until the entire piece of glass is From the heating furnace to the top of the multiple wind grid bars 342, the middle part of the glass to be bent can be input in a horizontal state to the top of the multiple wind grid bars 342. During this period, the two ends of the lower bending arc mechanism 37 at the output end are gradually raised to raise the lower bending arc mechanism 37 at the output end and reach the target curvature. When the whole piece of glass is completely above the multiple wind grid bars 342, the two ends of the lower bending arc mechanism 37 at the input end are lifted and bent to the target curvature, and the input end of the glass is formed by abutting against the corresponding upper bending arc mechanism 22, so that the whole piece of glass forms a set curved surface and is formed. Finally, the formed glass is quenched and tempered by the cooling air output by the air outlet box 341.

[0075] During the segmented bending process, and while ensuring that the lower bending arc mechanism 37 at the input end is in a horizontal state, the two ends of the linkage rod 384 are respectively connected through 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, and can make the glass enter the connected first transmission surface 301, the third transmission surface 303 and the second transmission surface 302 in turn, so that the glass can be continuously input to the top of the multiple wind grid bars 342, and complete the segmented bending forming in the process of step-by-step rising. When the entire glass is bent and formed, it can also be quenched and tempered by the cooling air output by the air outlet box 341, and then the tempered glass can be output from the second transmission surface 302 to the outside through the second transmission component.

[0076] like Figure 5 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 gear 33821 and the driven wheel 33822.

[0077] The top surfaces of the multiple first conveying components 330 form a first conveying surface 301, the top surfaces of the multiple soft shaft drive rollers 31 form a second conveying surface 302, and the top surfaces of the multiple second conveying components 332 form a third conveying surface 303, which are connected in sequence to form a continuous conveying surface for conveying glass.

[0078] Furthermore, it also includes an air supply mechanism 4;

[0079] The air supply mechanism 4 includes an upper air box 41 and a lower air box 42;

[0080] The upper averaging air box 41 and the lower averaging air box 42 are respectively installed above and below the frame 1;

[0081] 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.

[0082] like Figure 1 and Figure 2 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 and lower air balancing boxes 41 and 42, thereby improving the quality and efficiency of the quenching and tempering of the glass.

[0083] Furthermore, it also includes a lifting mechanism 5, wherein the lifting mechanism 5 includes a first lifting component 51, a second lifting component 52 and a third lifting component 53;

[0084] The first lifting assembly 51, the second lifting assembly 52 and the third lifting assembly 53 are respectively installed on the frame 1;

[0085] The four corners of the upper arc bending mechanism 22 are connected to the output end of the first lifting component 51 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 component 52 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 component 53 through cables respectively.

[0086] like Figure 1 and Figure 2 As shown, different lifting mechanisms are used to control the lifting and lowering of the two ends of the lower arc bending mechanism 37 at the input end, the two ends of the lower arc bending mechanism 37 at the output end, and the four corners of the upper arc bending mechanism 22, thereby ensuring that the lower arc bending mechanism 37 at the input end can operate independently, thereby meeting the requirements of the bending process at different stages of segmented bending tempering.

[0087] Preferably, both ends of the air outlet box 341 are exposed on both sides of the wind grille bar 342;

[0088] 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;

[0089] 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;

[0090] Along the central axis of the wind grille bar 342 , the plurality of air outlet boxes 341 are staggeredly distributed.

[0091] like Fig. 9 As shown, during operation, the upper arc bending mechanism 37 drives the multiple wind grille bars 342 above to form an arc surface protruding toward the tempered glass, so that the two ends of the two opposite air outlet boxes 341 located on the two adjacent wind grille bars 342 are close to each other, and the end faces of the two 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 two adjacent air outlet boxes 341 along the length direction from abutting against each other and interfering with each other during the bending process, and avoid the phenomenon that the arc surface formed due to the interference of the two air outlet boxes 341 does not reach the required curvature.

[0092] The multiple air outlet boxes 341 are staggered relative to the central axis of the wind grid bar 342, so that the gap between two adjacent and close air outlet boxes 341 is staggered, which can avoid the phenomenon that the corresponding part of the glass is not blown by cooling air during the tempering process, thereby avoiding affecting the tempering quality of the glass.

[0093] 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;

[0094] The flexible shaft transmission roller 331 includes a flexible shaft 3311 and a conveying wheel 3312;

[0095] 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;

[0096] 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;

[0097] 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;

[0098] 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.

[0099] Figure 4-10 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.

[0100] 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.

[0101] 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.

[0102] 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;

[0103] 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;

[0104] 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;

[0105] 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 .

[0106] like Figure 4-6 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.

[0107] like Figure 7 and Figure 8 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.

[0108] 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.

[0109] In a preferred embodiment, the transmission mechanism 33 further includes a connecting plate 337;

[0110] One end of the support tube 334 is connected to one end of the adjacent wind grid bar 342 through the connecting plate 337;

[0111] A plurality of the air outlet boxes 341 are installed between two adjacent flexible shafts 3311;

[0112] 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.

[0113] like Figure 7 and Figure 8 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 .

[0114] like Figure 3-6 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.

[0115] Furthermore, the support seat 32 also includes two shaft sleeves 324;

[0116] Two ends of the connecting seat 322 are respectively provided with two shaft sleeves 324;

[0117] The two ends of the connecting seat 322 are rotatably embedded in the two rotating chambers 3210 through the corresponding shaft sleeves 324;

[0118] The shaft sleeve 324 is provided with a limiting ring 3241;

[0119] 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 .

[0120] like Fig. 9 and Fig.10 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.

[0121] like Fig.10 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.

[0122] 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.

[0123] like Fig. 9 and Fig.10 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.

[0124] Furthermore, the present invention provides a step-by-step bending glass forming method, using the above-mentioned glass tempering device, comprising the following steps:

[0125] S1) When the tempered glass is still being heated, the four corners of the upper curved air grille 2 are lifted to a target curvature through the first lifting assembly 51 and the upper curved arc mechanism 22;

[0126] S2) when the tempered glass has been heated and the head end of the output tempered glass has passed the top surface of the lower bending arc mechanism 37 at the input end, the lower bending arc mechanism 37 at the output end is lifted to the first curvature by the second lifting assembly 52;

[0127] 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 37 at the input end, the lower bending arc mechanism 37 at the output end is again lifted to the target curvature by the second lifting assembly 52;

[0128] 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, thus completing the bending of the tempered glass.

[0129] According to the different positions of the head end of the tempered glass reaching above the lower bending wind grille 37, the second lifting assembly 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 and cracks inside the glass due to excessive curvature of the one-time bent glass, and to avoid the glass from bursting during quenching and tempering.

[0130] Specifically, when the target curvature is greater than a threshold value, the step-by-step bending glass forming method includes steps S1), S2), S3) and S4), and the first curvature is equal to the threshold value;

[0131] 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) and S4), and step S3) is removed.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] In summary, if Figure 1-12 In the embodiment of the present invention shown in the glass tempering device, the two ends of the linkage rod 384 are respectively connected by two first cross universal couplings 3386 and two first connecting shafts 3387 through a transmission connection structure, so that the motor reducer 3381 can drive the first transmission component 330, the second transmission component 332 and multiple soft shaft transmission rollers 331 to rotate synchronously through the linkage rod 3384, and can make the glass enter the connected first transmission surface 301, the second transmission surface 302 and the third transmission surface 303 in sequence while keeping the lower bending arc mechanism 7 at the input end in a horizontal state, so that the glass can be continuously input to the top of the multiple wind grid bars 342, and be bent and formed in the process of step-by-step raising, so as to realize the bending and forming of glass with a longer length.

[0136] Furthermore, the present invention proposes a step-by-step bending glass forming method, according to the position where the first end of the glass to be tempered reaches above 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 due to excessive curvature of the one-time bent glass, and to avoid cracks or bursting of the tempered glass.

[0137] 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 glass tempering device, comprising an upper curved air grille and a lower curved air grille mounted on a frame; the upper curved air grille comprises an upper air outlet assembly and an upper curved arc mechanism; the lower curved air grille comprises a transmission mechanism, a lower air outlet assembly and a lower curved arc mechanism; the transmission mechanism comprises a driving device, a transmission gear and a plurality of flexible shaft transmission rollers; the driving device comprises a motor reducer, a coupling assembly, a linkage rod and a linkage assembly; the lower air outlet assembly and the upper air outlet assembly each comprise a plurality of air outlet boxes and a plurality of air grille bars; the plurality of air outlet boxes are respectively connected to the corresponding air outlet grilles, characterized in that: The transmission mechanism further includes a first transmission assembly and a second transmission assembly, and the driving device further includes a first cross universal coupling and a first connecting shaft; The first transmission assembly is installed on the lower bending arc mechanism at the input end, and the top surface of the first transmission assembly forms the first transmission surface; the top surfaces of the plurality of soft shaft transmission rollers form the second transmission surface; the second transmission assembly is installed on the lower bending arc mechanism at the output end, and the top surface of the second transmission assembly forms the third transmission surface; the first transmission surface, the second transmission surface and the third transmission surface are connected in sequence; the first transmission assembly and the second transmission assembly are respectively connected to the corresponding transmission gears; 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 relatively; 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; The plurality of air outlet boxes located at the upper air outlet assembly and the plurality of air outlet boxes located at the lower air outlet assembly correspond to each other one by one; the plurality of air outlet boxes facing each other are used to output cooling air from the upper and lower surfaces to the conveying surface respectively; 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.

2. The glass tempering device 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 installed above and below the frame respectively; 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.

3. The glass tempering device according to claim 1, characterized in that: Also included is a lifting mechanism, the lifting mechanism comprising a first lifting assembly, a second lifting assembly and a third lifting assembly; The first lifting assembly, the second lifting assembly and the third lifting assembly are respectively installed on the frame; The four corners of the upper arc bending mechanism are connected to the output end of the first lifting component through cables respectively; the two ends of the lower arc bending mechanism at the output end are connected to the output end of the second lifting component through cables respectively; the two ends of the lower arc bending mechanism at the input end are connected to the output end of the third lifting component through cables respectively.

4. The glass tempering device 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 glass tempering device 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 glass tempering device 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 glass tempering device 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 step-by-step bending method for glass forming, characterized in that: Using the glass tempering device according to any one of claims 1 to 7 comprises the following steps: S1) when the tempered glass is still being heated, the four corners of the upward curved wind grille are lifted to a target curvature by means of a first lifting assembly and an upward curved arc mechanism; S2) when the tempered glass has been heated and the head end of the output tempered glass has passed the top surface of the lower bending arc mechanism at the input end, the lower bending arc mechanism at the output end is lifted to a first curvature by a second lifting assembly; 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 lower bending arc mechanism at the output end is again lifted to the target curvature by the second lifting assembly; 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 the target curvature, thus completing the bending of the tempered glass.

9. The step-by-step bending glass forming method 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 includes steps S1), S2), S3) and S4), 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) and S4), and step S3) is removed.

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