Automobile toughened glass and hot bending forming die for its angle bending

Abstract

The application belongs to the technical field of automobile toughened glass hot bending, and particularly relates to automobile toughened glass and a hot bending forming die for the same, which comprises an auxiliary driving mechanism; the auxiliary driving mechanism is placed on the ground, the inside lower end of the auxiliary driving mechanism is connected with an ejection mechanism, the ejection mechanism is used for ejecting the hot bending forming mechanism, the top front end and the rear end of the auxiliary driving mechanism are connected with a turnover mechanism, the turnover mechanism is used for driving the hot bending forming mechanism to turn over, and the top two ends of the auxiliary driving mechanism are provided with clamping mechanisms. The application realizes high-precision forming through turnover and ejection cooperation, realizes multi-category adaptation through movable components, realizes efficient and low-loss production through flexible clamping and integrated process, thereby solving the core pain points of low forming precision, poor adaptability, easy glass breakage and low production efficiency, and significantly reducing production cost and labor dependence, and having outstanding technical innovation and industrial application value.

Description

Technical Field

[0001] This invention relates to the field of automotive tempered glass hot bending technology, specifically to automotive tempered glass and a hot bending forming mold for its warped corners. Background Technology

[0002] The hot bending of automotive tempered glass is a core process for ensuring the sealing, aerodynamic performance, and driving safety of the vehicle body assembly. Its forming precision, adaptability, finished product integrity, and production efficiency directly determine the assembly quality and economic benefits of the automotive glass industry. However, existing hot bending technology for automotive tempered glass still faces many unresolved industry challenges, hindering product quality improvement and production model optimization. Existing hot bending forming molds mostly adopt the forming method of "single top pressing" or "single flipping", lacking a coordinated control mechanism for flipping and ejection. The positioning of the ejection mechanism is ambiguous, which easily leads to the problem of uneven loading. As a result, the corner angle deviation generally exceeds ±2°, the dimensional consistency of products in the same batch is poor, and the rework rate remains high. Moreover, the pressure transmission is uneven during the top pressing process, the flatness error of the glass corner area is large, and there is too much residual internal stress, which directly affects the impact resistance and service life of the glass.

[0003] In terms of adaptability, the forming area of ​​traditional molds is fixed. For different car models, different corner positions and sizes of glass, the entire set of molds needs to be replaced or the equipment structure needs to be significantly adjusted. The mold change cycle is as long as 30 minutes or more, and the mold change cost is high. It cannot meet the current automotive industry's flexible production needs of multiple categories and small batches, and the adaptability is limited to a single specification of product.

[0004] The clamping method has significant defects. Existing technologies mostly use rigid clamping. When the glass bends due to thermal expansion and contraction during hot bending, the clamping mechanism cannot adaptively adjust the angle and force, resulting in stress concentration at the glass edge and a breakage rate as high as 5%-8%. At the same time, there is a lack of effective limiting during the glass heating and forming process, which can easily lead to displacement and deviation in the forming position of the corner, further affecting the assembly accuracy.

[0005] The production process is decentralized, with glass requiring multiple independent stations for clamping, heating, transfer, forming, and cooling. During transfer, surface scratches and contamination are easily generated, and the connection between each station is time-consuming. The forming cycle of a single piece of glass with warped corners can be as long as 40-60 minutes, resulting in low production efficiency and difficulty in meeting the needs of large-scale production.

[0006] To this end, we propose a tempered glass for automobiles and a hot bending forming mold for its warped corners. Summary of the Invention

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A hot bending forming mold for the warped corner of automotive tempered glass, comprising: an auxiliary drive mechanism; The auxiliary drive mechanism is placed on the ground. The lower end of the auxiliary drive mechanism is connected to the ejection mechanism, which is used to eject the hot bending forming mechanism. The front and rear ends of the top of the auxiliary drive mechanism are connected to the flipping mechanism, which is used to flip the hot bending forming mechanism. The top two ends of the auxiliary drive mechanism are equipped with clamping mechanisms, which are set to four groups. The four groups of clamping mechanisms clamp the limiting mechanism. The upper end of the auxiliary drive mechanism is connected to the hot bending forming mechanism.

[0008] As a preferred embodiment of the hot bending forming mold for the corner of automotive tempered glass according to the present invention, the auxiliary driving mechanism includes: a vertical beam; The vertical beams are set in two groups, and a horizontal beam assembly is installed between the two groups of vertical beams. A base assembly is installed at the lower end of the vertical beams and the horizontal beam assembly, and the base assembly is placed on the ground. The beam assembly includes: a beam; The crossbeams are configured in two sets, with the crossbeams located at the front and rear ends of the two sets of vertical beams. The top of the crossbeams is provided with a first drive groove, and the upper side of the front end of the crossbeams is provided with a first sliding groove. The interior of the first drive groove is rotatably connected to a first screw, and the right end of the first screw is connected to the output end of a first motor. The first motor is installed on the side end of the vertical beams. A second motor is installed in the middle of the front end surface of the crossbeams. The upper and lower ends of the rear end surface of the crossbeams are provided with second sliding grooves. A second drive groove is provided between the two sets of second sliding grooves. The interior of the second drive grooves is rotatably connected to a first bidirectional screw, and the middle of the outer wall of the first bidirectional screw is connected to the output end of the second motor through a steering gear set. The base assembly includes: a support rod; The upper end of the support rod is installed on both ends of the outer wall of the vertical beam and the horizontal beam, and the lower end of the support rod is installed on the outer wall of the base. A third sliding groove is provided around the top of the base.

[0009] As a preferred embodiment of the hot bending forming mold for the corner of automotive tempered glass according to the present invention, the ejection mechanism includes: The first drive assembly is slidably connected to the inside of the left and right ends of the third sliding groove in the auxiliary drive mechanism. The upper end of the first drive assembly is provided with a second drive assembly. The second drive assembly slides inside the front and rear ends of the third sliding groove. The outer walls of the first drive assembly and the second drive assembly are both threadedly connected to the inside of the ejector assembly.

[0010] As a preferred embodiment of the hot bending forming mold for the corner of automotive tempered glass according to the present invention, the first driving component includes: a first movable plate; The first movable plate is slidably connected inside the third sliding groove. The first movable plate is set in two sets. The two sides of the two sets of first movable plates are rotatably connected to the second screw. The second screw is connected to each other through a sprocket and a chain drive. The upper end of the outer wall of the first movable plate is equipped with a third motor. The output end of the third motor is connected to one end of the outer wall of a set of second screws through a sprocket and a chain. The ejection assembly includes: a positioning disk; The lower sides of both the left and right ends of the positioning disk are provided with first threaded grooves. The inside of the first threaded grooves is threadedly connected to the outer wall of the second screw. The upper sides of both the front and rear ends of the positioning disk are provided with second threaded grooves. The second threaded grooves are connected to the second drive assembly. The top center of the positioning disk is rotatably connected to the rotating screw. The outer wall of the rotating screw is threadedly connected to the inside of the top rod. The top outer wall of the top rod is in contact with the inside of the hot bending forming mechanism.

[0011] As a preferred embodiment of the hot bending forming mold for the corner of automotive tempered glass according to the present invention, the flipping mechanism includes: a first internal thread block; The first internal threaded block is slidably connected inside the first drive groove. The inside of the first internal threaded block is threadedly connected to the outer wall of the first screw. The top of the first internal threaded block is provided with a T-shaped plate. The bottom of the T-shaped plate is slidably connected inside the first sliding groove. A fourth motor is installed on the upper end of the outer wall of the T-shaped plate. The output end of the fourth motor is connected to a rotating rod. The rotating rod is rotatably connected to the upper end of the inner wall of the T-shaped plate. The upper and lower ends of the outer wall of the rotating rod are provided with grooves. A synchronous sprocket is slidably connected to the outer wall of the rotating rod. The upper and lower ends of the inner wall of the synchronous sprocket are provided with protrusions. The protrusions are slidably connected inside the grooves. The bottom of the synchronous sprocket is connected to the outer wall of the torsion bar through a sprocket and a chain. The other end of the torsion bar is rotatably connected to the output end of the hydraulic cylinder. The hydraulic cylinder is installed on the lower end of the outer wall of the T-shaped plate.

[0012] As a preferred embodiment of the hot bending forming mold for the corner of automotive tempered glass according to the present invention, the clamping mechanism includes: a bearing seat; The bearing seats are installed at the top two ends of the vertical beam in the auxiliary drive mechanism. The inner wall of the bearing seats is rotatably connected to the limiting plate. The inner two ends of the limiting plate are rotatably connected to the second bidirectional screw. The top of a set of second bidirectional screws is connected to the crank handle. The inner two ends of the limiting plate are slidably connected to the clamping plate. The inner two ends of the clamping plate are threadedly connected to the outer wall of the second bidirectional screw. Two sets of clamping plates are set.

[0013] As a preferred embodiment of the hot bending forming mold for the corner of automotive tempered glass according to the present invention, the hot bending forming mechanism includes: a first fixing box assembly; The first fixed box assembly is fixedly installed in the middle position between the two sets of crossbeams in the auxiliary drive mechanism. The second fixed box assembly is fixedly installed on both sides between the two sets of crossbeams. A movable box assembly is provided between the first fixed box assembly and the second fixed box assembly. The movable box assembly is slidably connected to the inside of the second sliding groove in the auxiliary drive mechanism. The middle of the front and rear ends of the movable box assembly is threadedly connected to the outer wall of the first bidirectional screw in the auxiliary drive mechanism. A hot bending forming assembly is slidably connected inside the first fixed box assembly, the second fixed box assembly, and the movable box assembly. The front end and the rear end of the hot bending forming assembly are both connected to the drive end of the flipping mechanism.

[0014] As a preferred embodiment of the hot bending forming mold for the corner of automotive tempered glass according to the present invention, the movable box assembly includes: a movable box; The front and rear ends of the movable box are each provided with a second internal thread block. The second internal thread block is slidably connected to the inside of the second drive groove. The inside of the second internal thread block is threadedly connected to the outer wall of the first bidirectional screw in the auxiliary drive mechanism. The two ends of the second internal thread block are provided with sliders. The sliders are slidably connected to the inside of the second sliding groove in the auxiliary drive mechanism. The two ends of the inner wall of the movable box are provided with limiting grooves. The inside of the limiting grooves is provided with several sets of first inclined blocks.

[0015] As a preferred embodiment of the hot bending forming mold for the warped corner of automotive tempered glass according to the present invention, the hot bending forming component includes: a lifting plate; The outer wall of the lifting plate is equipped with lifting rods around its perimeter. The lifting rods are slidably connected inside the limiting groove. The outer wall of the lifting rods is equipped with several sets of second inclined blocks. The top of the lifting plate is rotatably connected to an arc-shaped top block. The arc-shaped top block and the lifting plate are connected by a drive rod. The outer wall of the drive rod is fixedly equipped with an arc-shaped top block. The port surface of the arc-shaped top block is equipped with a polygonal groove, into which a torsion rod is inserted.

[0016] A tempered glass for automobiles includes: a limiting mechanism; The limiting mechanism includes: a tough steel plate; The tough steel plates are set in two groups, with automotive tempered glass sandwiched between the two groups of tough steel plates, and clamping blocks sandwiched around the outer walls of the two groups of tough steel plates.

[0017] Compared with existing technologies: The precise connection between the torsion bar and polygonal groove of the flipping mechanism enables the coordinated action of first flipping and erecting the arc-shaped top block, and then ejecting it for forming. The ejection mechanism ensures that the ejector rod is precisely aligned with the lifting plate through bidirectional positioning. The lifting rod and the inclined block of the limiting groove engage and lock, forming a closed loop of flipping positioning, top pressing forming, and height locking. This breaks through the forming limitations of single top pressing or single flipping in existing technologies. The arc-shaped top block is first driven to flip to a preset angle by the torsion bar, and then uniform pressure is applied by the ejector rod to avoid the warping angle deviation caused by the arc surface fitting deviation during top pressing. The inclined block engagement structure achieves rigid locking of the ejection height, preventing the lifting plate from falling back during hot bending, ensuring the consistency of the warping angle size of the same batch of glass, meeting the high-precision assembly requirements of automotive glass, reducing the rework rate caused by dimensional deviations, and improving production efficiency. The movable box assembly is threadedly connected to the first bidirectional screw via a second internal threaded block, allowing it to move flexibly along the second sliding groove. This adjusts its relative position to the first and second fixed box assemblies, adapting to the positioning of the warped corner area for glass of different sizes. This overcomes the limitations of existing technologies that fix the forming area, eliminating the need to change molds or adjust the overall equipment structure. Rapid switching between different car models and warped corner positions can be achieved solely through motor drive. The modular design of the movable box assembly and the hot bending forming assembly allows for adjustments to the number of movable boxes based on the number and position requirements of the warped corners, expanding the equipment's applicability and the range of compatible glass sizes. It is compatible with the warped corner forming needs of most automotive tempered glass, shortening pattern changeover time, reducing mold change costs, and significantly improving multi-category production efficiency. Four sets of clamping mechanisms are connected by rotating bearings and limiting plates. Combined with the flexible clamping of the clamping plates, they rotate synchronously with the glass bending angle during hot bending, avoiding edge breakage caused by rigid clamping. The combination of the flexible steel plate and clamping blocks in the limiting mechanism both fixes the glass and allows space for thermal expansion and contraction, thus overcoming the shortcomings of existing rigid clamping technologies. The clamping plates rotate synchronously with the glass bending, dispersing clamping stress and preventing cracks at the glass edges. The elastic buffering effect of the flexible steel plate reduces pressure concentration on the glass surface during hot bending. The circumferentially evenly distributed design of the clamping blocks prevents displacement due to thermal expansion and contraction during glass heating, ensuring precise alignment between the hot bending area and the forming components. This reduces the glass breakage rate, significantly lowers raw material waste costs, and prevents glass displacement deviation during hot bending, ensuring accurate corner forming and avoiding assembly interference problems caused by displacement. By integrating the auxiliary drive mechanism, ejection mechanism, tilting mechanism, and clamping mechanism for coordinated control, a single-stage clamping, positioning, hot bending, forming, and cooling operation is achieved, eliminating the need for intermediate transfer or secondary adjustments. This breaks through the existing multi-station, decentralized operation mode of clamping, heating, forming, and cooling, reducing glass transfer losses and positioning deviations between different stations. Furthermore, the precise linkage of motors and hydraulic cylinders enables automated control of each mechanism, eliminating the need for manual intervention in the core forming process, reducing human error, shortening the single-piece glass corner forming cycle, lowering labor costs, and avoiding scratches and contamination on the glass surface during transfer, thus improving the finished product qualification rate. The first and second drive components of the ejection mechanism work together to drive the positioning disk, achieving precise three-dimensional positioning of the ejector rod. The inner wall of the ejector rod heat-bending forming mechanism limits the ejection pressure, ensuring that the ejection pressure is transmitted vertically and avoiding glass warping caused by off-center loading. This overcomes the defect of ambiguous ejector rod positioning in existing technologies. The bidirectional drive mechanism ensures that the ejector rod is accurately aligned with the center of force at the glass warping corner, and the ejection pressure is evenly transmitted to the arc-shaped top block. The screw and the ejector rod are threadedly connected, enabling stepless adjustment of the ejection speed to adapt to the heat bending requirements of glass of different thicknesses, reducing the flatness error in the glass warping corner area, ensuring uniform stress distribution in the glass during the ejection process, reducing the residual internal stress after heat bending, improving the glass's impact resistance, and extending its service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall disassembled structure provided by the present invention; Figure 3 A schematic diagram of the auxiliary drive mechanism structure provided by the present invention; Figure 4 Schematic diagram of the beam assembly structure provided by the present invention Figure 1 ; Figure 5 Schematic diagram of the beam assembly structure provided by the present invention Figure 2 ; Figure 6 This is a schematic diagram of the base assembly structure provided by the present invention; Figure 7 This is a schematic diagram of the ejection mechanism structure provided by the present invention; Figure 8 This is a schematic diagram of the disassembled structure of the ejection mechanism provided by the present invention; Figure 9 This is a schematic diagram of the ejector assembly structure provided by the present invention; Figure 10 Schematic diagram of the flipping mechanism provided by the present invention Figure 1 ; Figure 11 Schematic diagram of the flipping mechanism provided by the present invention Figure 2 ; Figure 12 A schematic diagram of the clamping mechanism placement structure provided by the present invention; Figure 13 Schematic diagram of the clamping mechanism provided by the present invention Figure 1 ; Figure 14 Schematic diagram of the clamping mechanism provided by the present invention Figure 2 ; Figure 15 This is a schematic diagram of the disassembled structure of the limiting mechanism provided by the present invention; Figure 16 This is a schematic diagram of the hot bending forming mechanism provided by the present invention; Figure 17 This is a schematic diagram showing the disassembled structure of the movable box assembly and the hot bending forming assembly provided by the present invention; Figure 18 This is a schematic diagram of the active box assembly structure provided by the present invention; Figure 19 Schematic diagram of the hot bending forming component structure provided by the present invention Figure 1 ; Figure 20 Schematic diagram of the hot bending forming component structure provided by the present invention Figure 2 . Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0020] This invention provides automotive tempered glass and a hot bending mold for its warped corners. Please refer to [link / reference]. Figures 1-20 It includes an auxiliary drive mechanism 1, an ejection mechanism 2, a flipping mechanism 3, a clamping mechanism 4, a limiting mechanism 5, and a hot bending forming mechanism 6; The auxiliary drive mechanism 1 is placed on the ground. It can limit and guide the ejection mechanism 2 and the flipping mechanism 3. Simultaneously, it can drive the flipping mechanism 3 to move. It can also adjust the position of the hot bending forming mechanism 6. The auxiliary drive mechanism 1 includes: a vertical beam 11, a horizontal beam assembly 12, a horizontal beam 121, a first drive groove 122, a first sliding groove 123, a first screw 124, a first motor 125, a second motor 126, a second sliding groove 127, a second drive groove 128, a first bidirectional screw 129, a base assembly 13, a support rod 131, a base 132, and a third sliding groove 133. The vertical beams 11 are configured in two sets. A crossbeam assembly 12 is installed between the vertical beams 11 and the vertical beams 11. The crossbeam assembly 12 can drive the movement of the flipping mechanism 3 and adjust the position of the hot bending forming mechanism 6. The crossbeams 121 are configured in two sets, located at the front and rear ends of the two sets of vertical beams 11. The top of the crossbeam 121 is provided with a first drive groove 122, and the upper side of the front end of the crossbeam 121 is provided with a first sliding groove 123. The first sliding groove 123 can limit and guide the movement of the flipping mechanism 3. The first drive groove 122 is rotatably connected to a first screw 124. The right end of the first screw 124 is connected to the output end of a first motor 125. The first motor 125 is installed on the side end of the vertical beam 11. The first motor 125 drives the vertical beam 11. The first screw 124 is rotated, which in turn drives the flipping mechanism 3 to move. A second motor 126 is installed in the middle of the front end surface of the crossbeam 121. The upper and lower ends of the rear end surface of the crossbeam 121 are provided with second sliding grooves 127. The second sliding grooves 127 can limit and guide the movement of the hot bending forming mechanism 6. A second drive groove 128 is provided between the two sets of second sliding grooves 127. The interior of the second drive groove 128 is rotatably connected to the first bidirectional screw 129. The outer wall of the first bidirectional screw 129 is connected to the output end of the second motor 126 through a steering gear set. Driven by the second motor 126, the first bidirectional screw 129 can be rotated. The first bidirectional screw 129 rotates, which can drive the movable box assembly 63 in the hot bending forming mechanism 6 to move closer or further away from each other, thereby adjusting the warp position of the automotive tempered glass 52. The lower end of the vertical beam 11 and the horizontal beam assembly 12 is equipped with a base assembly 13, which is placed on the ground. The upper end of the support rod 131 is installed on both ends of the outer wall of the vertical beam 11 and the horizontal beam 121, and the lower end of the support rod 131 is installed around the outer wall of the base 132. The support rod 131 and the base 132 cooperate to support the vertical beam 11 and the horizontal beam 121. The top of the base 132 is provided with a third sliding groove 133, which can limit and guide the movement of the ejection mechanism 2. The ejection mechanism 2 is connected to the lower end of the auxiliary drive mechanism 1. The ejection mechanism 2 is used to eject the hot bending forming mechanism 6. The components include the first drive assembly 21, the first movable plate 211, the second screw 212, the third motor 213, the second drive assembly 22, the ejection assembly 23, the positioning plate 231, the first threaded groove 232, the second threaded groove 233, the rotating screw 234, and the ejector rod 235.The first drive assembly 21 is slidably connected to the interior of the left and right ends of the third sliding groove 133 in the auxiliary drive mechanism 1. The first movable plate 211 is slidably connected to the interior of the third sliding groove 133. The first movable plate 211 is configured as two sets, with the two sets of first movable plates 211 placed in mirror image. The two sides of the two sets of first movable plates 211 are rotatably connected to second screws 212. The second screws 212 are connected to each other through a sprocket and a chain drive. A third motor 213 is installed on the upper end of the outer wall of the first movable plate 211. The output end of the third motor 213 is connected to one end of the outer wall of a set of second screws 212 through a sprocket and a chain. Driven by the third motor 213, the two sets of second screws 212 can be rotated. The upper end of the first driving component 21 is provided with a second driving component 22. The second driving component 22 slides inside the front and rear ends of the third sliding groove 133. The structure of the second driving component 22 is the same as that of the first driving component 21. The outer walls of both the first driving component 21 and the second driving component 22 are threadedly connected to the inside of the ejector component 23. Through the driving of the first driving component 21 and the second driving component 22, the position of the ejector component 23 can be moved, thereby moving the ejector component 23 to the bottom of the hot bending forming component 64 in the hot bending forming mechanism 6, thereby realizing the positioning operation of each group of hot bending forming components 64 before ejection. The lower sides of the left and right ends of the positioning disk 231 are provided with first threaded grooves 232. The interior of the first threaded groove 232 is threadedly connected to the outer wall of the second screw 212. Rotation of the second screw 212 allows the positioning disk 231 to move left and right. Meanwhile, the second drive assembly 22 slides along the third sliding grooves 133 at both ends. The upper sides of both ends of the positioning disk 231 are provided with second threaded grooves 233, which are connected to the second drive assembly 22. Driven by the second drive assembly 22, the positioning disk 231 can move back and forth. At this time, the first movable plate 211 slides along the third sliding grooves 133 at both ends. A motor is pre-embedded in the center of the positioning disk 231, and a rotating screw 234 is rotatably connected to the top center of the positioning disk 231. The bottom of the second screw 212 is connected to the pre-embedded motor output end. The pre-embedded motor can drive the second screw 212 to rotate. The outer wall of the rotating screw 234 is threaded to the inside of the top rod 235. The top outer wall of the top rod 235 contacts the inside of the hot bending forming mechanism 6. Through the contact of the inner walls of the first fixed box assembly 61, the second fixed box assembly 62 and the movable box assembly 63 in the hot bending forming mechanism 6, the rotation of the top rod 235 can be limited. So when the rotating screw 234 rotates, the top rod 235 performs telescopic movement under the limit action, thereby pushing out the hot bending forming assembly 64, so that the hot bending forming assembly 64 performs the hot bending forming and pushing out operation of the automotive tempered glass 52. The flipping mechanism 3 is connected to the top front end and rear end of the auxiliary drive mechanism 1. The flipping mechanism 3 is used to flip the hot bending forming mechanism 6. The flipping mechanism 3 includes: a first internal thread block 31, a T-shaped plate 32, a fourth motor 33, a rotating rod 34, a groove 35, a synchronous sprocket 36, a protrusion 37, a torsion bar 38, and a hydraulic cylinder 39. The first internal thread block 31 is slidably connected to the inside of the first drive groove 122. The inside of the first internal thread block 31 is threadedly connected to the outer wall of the first screw 124. The rotation of the first screw 124 can drive the first internal thread block 31 to move. The top of the first internal thread block 31 is provided with a T-shaped plate 32. The bottom of the T-shaped plate 32 is slidably connected to the inside of the first sliding groove 123. The fourth motor 33 is installed on the upper end of the outer wall of the T-shaped plate 32. The output end of the fourth motor 33 is connected to the rotating rod 34. The fourth motor 33 can drive the rotating rod 34 to rotate. The rotating rod 34 is rotatably connected to the upper end of the inner wall of the T-shaped plate 32. The upper and lower ends of the outer wall of the rotating rod 34 are both A groove 35 is provided, and a synchronous sprocket 36 is slidably connected to the outer wall of the rotating rod 34. The upper and lower ends of the inner wall of the synchronous sprocket 36 are provided with protrusions 37, which are slidably connected inside the groove 35. Through the limiting of the protrusions 37 and the groove 35, when the rotating rod 34 rotates, it can drive the synchronous sprocket 36 to rotate. The bottom of the synchronous sprocket 36 is connected to the outer wall of the torsion bar 38 through a sprocket and a chain. A polygonal block is provided at the other end of the torsion bar 38. Through the rotation of the synchronous sprocket 36, the torsion bar 38 can be driven to rotate. When the polygonal block at the end of the torsion bar 38 contacts the hot bending forming component 64, the rotation of the torsion bar 38 can drive the hot bending forming component 64 to perform a flipping operation. The other end of the torsion bar 38 is rotatably connected to the output end of the hydraulic cylinder 39. Through the drive of the hydraulic cylinder 39, the torsion bar 38 can be driven to perform a telescopic operation, so that the polygonal block of the torsion bar 38 is inserted into the polygonal groove 646 of the hot bending forming component 64. The hydraulic cylinder 39 is installed at the lower end of the outer wall of the T-shaped plate 32. The clamping mechanism 4 is located at both ends of the top of the auxiliary drive mechanism 1. The clamping mechanism 4 is configured in four groups and includes: a bearing seat 41, a limiting plate 42, a second bidirectional screw 43, a crank handle 44, and a clamping plate 45. The bearing seat 41 is installed at both ends of the top of the vertical beam 11 in the auxiliary drive mechanism 1. The inner wall of the bearing seat 41 is rotatably connected to the limiting plate 42. The inner ends of the limiting plate 42 are rotatably connected to the second bidirectional screw 43. The two groups of second bidirectional screws 43 are connected via sprockets and chains. The top of one group of second bidirectional screws 43 is connected to the crank handle 44. By rotating the crank handle 44, the two groups of second bidirectional screws 43 can be driven. The two bidirectional screws 43 rotate, and the clamping plates 45 are slidably connected to the inner ends of the limiting plate 42. The inner ends of the clamping plates 45 are threadedly connected to the outer wall of the second bidirectional screw 43. The clamping plates 45 are set in two groups. By rotating the second bidirectional screw 43, the two groups of clamping plates 45 can be driven to move away from each other and closer to each other, so that the two groups of clamping plates 45 can clamp and release the limiting mechanism 5. When the limiting mechanism 5 is hot-bent and ejected, the two groups of clamping plates 45 and the limiting plate 42 rotate with the bending of the limiting mechanism 5, thereby cooperating with the limiting mechanism 5 to perform the bending operation. The limiting mechanism 5 is clamped by four sets of clamping mechanisms 4. The limiting mechanism 5 can be put into the tempering furnace for heating operation. The limiting mechanism 5 includes: a tough steel plate 51, automotive tempered glass 52, and clamping blocks 53. The tough steel plate 51 is configured as two sets. The two sets of tough steel plates 51 can be clamped and fixed by two sets of clamping plates 45. The automotive tempered glass 52 is clamped between the two sets of tough steel plates 51. The clamping plates 45 clamp the two sets of tough steel plates 51 around their perimeter, thereby clamping and fixing the tempered glass 52. The clamping blocks 53 are clamped around the outer walls of the two sets of tough steel plates 51. The clamping blocks 53 can clamp and limit the automotive tempered glass 52 between the two sets of tough steel plates 51. Therefore, when the tough steel plate 51 and the automotive tempered glass 52 are put into the tempering furnace together, it can prevent the tempered glass 52 from shifting, thereby preventing the hot bending and forming ejection operation of the tempered glass 52 from being affected. The hot bending forming mechanism 6 is connected to the upper part of the auxiliary drive mechanism 1. The hot bending forming mechanism 6 cooperates with the flipping mechanism 3 and the ejection mechanism 2 to perform hot bending operations on the automotive tempered glass 52 within the limiting mechanism 5. The hot bending forming mechanism 6 includes: a first fixed box assembly 61, a second fixed box assembly 62, a movable box assembly 63, a movable box 631, a second internal threaded block 632, a slider 633, a limiting groove 634, a first inclined block 635, a hot bending forming assembly 64, a lifting plate 641, a lifting rod 642, a second inclined block 643, an arc-shaped top block 644, a drive rod 645, and a polygonal groove 646. The first fixed box assembly 61 is fixedly installed in the middle position between two sets of crossbeams 121 in the auxiliary drive mechanism 1. A second fixed box assembly 62 is fixedly installed on both sides between the first fixed box assembly 61 and the second fixed box assembly 62. A movable box assembly 63 is provided between the first fixed box assembly 61 and the second fixed box assembly 62. The movable box assembly 63 is slidably connected to the inside of the second sliding groove 127 in the auxiliary drive mechanism 1. The middle of the front and rear ends of the movable box assembly 63 is threadedly connected to the outer wall of the first bidirectional screw 129 in the auxiliary drive mechanism 1. By rotating the first bidirectional screw 129, several sets of movable box assemblies 63 can be moved, thereby adjusting and positioning the hot bending areas at both ends of the surface of the automotive tempered glass 52. A second internal thread block 632 is provided at the middle of the front and rear ends of the movable box 631. The second internal thread block 632 is slidably connected to the inside of the second drive groove 128. The inner threads of the second internal threaded block 632 are threadedly connected to the outer wall of the first bidirectional screw 129 in the auxiliary drive mechanism 1. Rotation of the first bidirectional screw 129 drives the movable box 631 to move, thereby positioning the hot bending forming assembly 64 at the upper end of the movable box 631 in the bending area. The two ends of the second internal threaded block 632 are provided with sliders 633, which are slidably connected to the inside of the second sliding groove 127 in the auxiliary drive mechanism 1. The inner walls of the movable box 631 are provided with limiting grooves 634 at both ends. The limiting grooves 634 are T-shaped, and several sets of first inclined blocks 635 are provided inside the limiting grooves 634. The first fixed box assembly 61, the second fixed box assembly 62, and the movable box assembly 63 are slidably connected to the hot bending forming assembly. Component 64, the front and rear ends of the hot bending forming component 64 are connected to the drive end of the flipping mechanism 3. Driven by the flipping mechanism 3, the hot bending forming component 64 can be flipped, thereby allowing the hot bending forming component 64 to push out and bend the hot bending area of ​​the automotive tempered glass 52. The outer wall of the lifting plate 641 is provided with lifting rods 642. The lifting rods 642 are slidably connected inside the limiting groove 634. The limiting groove 634 can limit and guide the lifting movement of the lifting rods 642 and prevent the lifting rods 642 from slipping out. The outer wall of the lifting rods 642 is provided with several sets of second inclined blocks 643. The second inclined blocks 643 are rotated 180 degrees from the first inclined blocks 635. Through the cooperation of the first inclined blocks 635 and the second inclined blocks 643, the lifting rods 642 can be raised smoothly.Furthermore, it can prevent the lifting rod 642 from falling. When it needs to return to its initial position, the second inclined block 643 needs to be pressed, causing the second inclined block 643 to retract into the interior of the lifting rod 642, thereby moving the second inclined block 643 away from the limiting area of ​​the first inclined block 635. The top of the lifting plate 641 is rotatably connected to the arc-shaped top block 644. The arc-shaped top block 644 is driven to flip and stand up by the flipping mechanism 3, and then the bottom of the lifting plate 641 is lifted by the top rod 235, so that the lifting plate 641 is raised, thereby enabling the arc-shaped top block 644 to reach the car. The tempered glass 52 is ejected from its hot-bending area. The curved top block 644 is rotatably connected to the lifting plate 641 via a drive rod 645. The curved top block 644 is fixedly mounted on the outer wall of the drive rod 645. A polygonal groove 646 is provided on the end surface of the curved top block 644. A torsion rod 38 is inserted into the polygonal groove 646. The polygonal block of the torsion rod 38 inserts into the polygonal groove 646, and the rotation of the torsion rod 38 drives the drive rod 645 and the curved top block 644 to rotate, thereby raising the curved top block 644.

[0021] In practical use, those skilled in the art will place the automotive tempered glass 52 stably between two sets of flexible steel plates 51, ensuring that the center of the glass is aligned with the center of the flexible steel plates. Clamping blocks 53 will be evenly installed around the outer walls of the two sets of flexible steel plates 51. The clamping force of the clamping blocks 53 will fix the glass to the flexible steel plates, preventing the glass from shifting during hot bending. The clamping blocks 53 must allow space for thermal expansion and contraction of the glass and should not be excessively compressed. The automotive tempered glass 52 and the two sets of flexible steel plates 51 will be simultaneously placed in a tempering furnace for heating. After heating is complete, the automotive tempered glass 52 and the two sets of flexible steel plates 51 will be removed and installed in the four clamping mechanisms 4. The clamping mechanism 45 is clamped and fixed inside the beam. During clamping, the angle of the limiting plate 42 is adjusted by the bearing seat 41 to ensure that the clamping plate 45 is completely in contact with the tough steel plate 51. The second motor 126 of the auxiliary drive mechanism 1 is started, and its output end drives the first bidirectional screw 129 in the crossbeam 121 to rotate through the steering gear set. The first bidirectional screw 129 drives the second internal thread block 632 of the movable box assembly 63 to slide along the second drive groove 128. At the same time, the slider 633 moves synchronously along the second sliding groove 127, adjusting the relative position of the movable box 631 with the first fixed box assembly 61 and the second fixed box assembly 62. The arc-shaped top block 644 of the hot bending forming assembly 64 is precisely aligned with the preset warp corner area of ​​the automotive tempered glass 52. The hydraulic cylinder 39 of the flipping mechanism 3 is activated, pushing the torsion bar 38 to extend and retract towards the hot bending forming assembly 64. This causes the polygonal block at the end of the torsion bar 38 to insert into the polygonal groove 646 of the arc-shaped top block 644. The fourth motor 33 is then activated, driving the rotating rod 34 to rotate. The groove 35 on the outer wall of the rotating rod 34 engages with the protrusion 37 on the inner wall of the synchronous sprocket 36, causing the synchronous sprocket 36 to rotate. This, in turn, drives the torsion bar 38 to rotate via the sprocket and chain. The torsion bar 38 then drives the drive rod 645. Rotation causes the arc-shaped top block 644 to flip and stand upright around the top of the lifting plate 641 until the arc surface of the arc-shaped top block 644 is in contact with the pre-formed surface of the glass corner. By activating the third motor 213 of the ejection mechanism 2, the second screw 212 between the two sets of first movable plates 211 is driven to rotate through the sprocket and chain, driving the positioning plate 231 to move left and right along the third sliding groove 133. Simultaneously, the second drive assembly 22 is activated, driving the positioning plate 231 to move back and forth, so that the top rod 235 on the top of the positioning plate 231 is precisely aligned with the bottom of the lifting plate 641 of the hot bending forming assembly 64. The internal mechanism of the positioning plate 231 is activated. The pre-embedded motor drives the rotating screw 234 to rotate. Because the top rod 235 is limited by the inner wall of the heat-bending forming mechanism 6 and cannot rotate, the top rod 235 extends and retracts axially along the rotating screw 234, lifting the lifting plate 641. The lifting plate 641 drives the lifting rod 642 to slide upward along the limiting groove 634 of the movable box 631. The second inclined block 643 on the lifting rod 642 engages with the first inclined block 635 in the limiting groove 634, achieving height locking of the lifting plate 641. Under the pushing force of the top rod 235, the arc-shaped top block 644 applies uniform pressure to the warped corner area of ​​the automotive tempered glass 52.The glass, in a thermoplastic state, is bonded to the curved surface of the arc-shaped top block 644 to form a pre-set upturned corner. This state is maintained for heat and pressure insulation, ensuring stable upturned corner formation, and natural cooling is allowed to prevent the glass from cracking due to internal stress caused by rapid cooling.

[0022] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A hot bending forming mold for the warped corner of automotive tempered glass, comprising: Auxiliary drive mechanism; characterized in that: The auxiliary drive mechanism is placed on the ground. The lower end of the auxiliary drive mechanism is connected to the ejection mechanism, which is used to eject the hot bending forming mechanism. The front and rear ends of the top of the auxiliary drive mechanism are connected to the flipping mechanism, which is used to flip the hot bending forming mechanism. The top two ends of the auxiliary drive mechanism are equipped with clamping mechanisms, which are set to four groups. The four groups of clamping mechanisms clamp the limiting mechanism. The upper end of the auxiliary drive mechanism is connected to the hot bending forming mechanism. The auxiliary drive mechanism includes: a vertical beam; the vertical beam is configured as two sets, a horizontal beam assembly is installed between the two sets of vertical beams, a base assembly is installed at the lower end of the vertical beam and the horizontal beam assembly, and the base assembly is placed on the ground; The crossbeam assembly includes: a crossbeam; the crossbeam is configured as two sets, with the crossbeams located at the front and rear ends of the two sets of vertical beams. The top of the crossbeam is provided with a first drive groove, and the upper side of the front end of the crossbeam is provided with a first sliding groove. The interior of the first drive groove is rotatably connected to a first screw, and the right end of the first screw is connected to the output end of a first motor. The first motor is installed on the side end of the vertical beam. A second motor is installed in the middle of the front end surface of the crossbeam. The upper and lower ends of the rear end surface of the crossbeam are provided with second sliding grooves. A second drive groove is provided between the two sets of second sliding grooves. The interior of the second drive groove is rotatably connected to a first bidirectional screw, and the middle of the outer wall of the first bidirectional screw is connected to the output end of the second motor through a steering gear set. The base assembly includes: a support rod; the upper end of the support rod is installed on both ends of the outer wall of the vertical beam and the horizontal beam, the lower end of the support rod is installed on the outer wall of the base, and a third sliding groove is provided on the top of the base. The ejection mechanism includes: a first drive component slidably connected to the inside of the left and right ends of the third sliding groove in the auxiliary drive mechanism; a second drive component is provided at the upper end of the first drive component; the second drive component slides inside the front and rear ends of the third sliding groove; and the outer walls of the first drive component and the second drive component are threadedly connected to the inside of the ejection component. The first driving component includes: a first movable plate; the first movable plate is slidably connected inside the third sliding groove, the first movable plate is configured as two sets, the two sides of the two sets of first movable plates are rotatably connected to the second screws, the second screws are connected to each other by a sprocket and a chain drive, a third motor is installed on the upper end of the outer wall of the first movable plate, and the output end of the third motor is connected to one end of the outer wall of a set of second screws by a sprocket and a chain; The ejection assembly includes: a positioning plate; the lower sides of both the left and right ends of the positioning plate are provided with first threaded grooves, the interior of the first threaded grooves is threadedly connected to the outer wall of the second screw, the upper sides of both the front and rear ends of the positioning plate are provided with second threaded grooves, the second threaded grooves are connected to the second drive assembly, the top center of the positioning plate is rotatably connected to the rotating screw, the outer wall of the rotating screw is threadedly connected to the interior of the ejector rod, and the top outer wall of the ejector rod is in contact with the interior of the hot bending forming mechanism. The flipping mechanism includes: a first internal threaded block; the first internal threaded block is slidably connected inside the first drive groove, the inside of the first internal threaded block is threadedly connected to the outer wall of the first screw, the top of the first internal threaded block is provided with a T-shaped plate, the bottom of the T-shaped plate is slidably connected to the inside of the first sliding groove, a fourth motor is installed at the upper end of the outer wall of the T-shaped plate, the output end of the fourth motor is connected to a rotating rod, the rotating rod is rotatably connected to the upper end of the inner wall of the T-shaped plate, the upper and lower ends of the outer wall of the rotating rod are provided with grooves, the outer wall of the rotating rod is slidably connected to a synchronous sprocket, the upper and lower ends of the inner wall of the synchronous sprocket are provided with protrusions, the protrusions are slidably connected inside the grooves, the bottom of the synchronous sprocket is connected to the outer wall of the torsion bar through a sprocket and a chain, the other end of the torsion bar is rotatably connected to the output end of the hydraulic cylinder, and the hydraulic cylinder is installed at the lower end of the outer wall of the T-shaped plate; The hot bending forming mechanism includes: a first fixed box assembly; the first fixed box assembly is fixedly installed in the middle position between two sets of crossbeams in the auxiliary drive mechanism, and a second fixed box assembly is fixedly installed on both sides between the two sets of crossbeams. A movable box assembly is provided between the first fixed box assembly and the second fixed box assembly. The movable box assembly is slidably connected to the inside of the second sliding groove in the auxiliary drive mechanism. The middle of the front and rear ends of the movable box assembly is threadedly connected to the outer wall of the first bidirectional screw in the auxiliary drive mechanism. A hot bending forming assembly is slidably connected inside the first fixed box assembly, the second fixed box assembly, and the movable box assembly. The front end and the rear end of the hot bending forming assembly are both connected to the drive end of the flipping mechanism. The movable box assembly includes: a movable box; a second internal threaded block is provided at the middle position of the front end and the rear end of the movable box, the second internal threaded block is slidably connected to the inside of the second drive groove, the inside of the second internal threaded block is threadedly connected to the outer wall of the first bidirectional screw in the auxiliary drive mechanism, the two ends of the second internal threaded block are provided with sliders, the sliders are slidably connected to the inside of the second sliding groove in the auxiliary drive mechanism, the two ends of the inner wall of the movable box are provided with limiting grooves, and the inside of the limiting grooves is provided with several sets of first inclined blocks; The hot bending forming assembly includes: a lifting plate; lifting rods are provided around the outer wall of the lifting plate, the lifting rods are slidably connected inside the limiting groove, the outer wall of the lifting rods is provided with several sets of second inclined blocks, the top of the lifting plate is rotatably connected to an arc-shaped top block, the arc-shaped top block and the lifting plate are rotatably connected by a drive rod, the outer wall of the drive rod is fixedly installed with an arc-shaped top block, the port surface of the arc-shaped top block is provided with a polygonal groove, and a torsion bar is inserted into the polygonal groove.

2. The hot bending forming mold for the warped corner of automotive tempered glass according to claim 1, characterized in that, The clamping mechanism includes: a bearing seat; The bearing seats are installed at the top two ends of the vertical beam in the auxiliary drive mechanism. The inner wall of the bearing seats is rotatably connected to the limiting plate. The inner two ends of the limiting plate are rotatably connected to the second bidirectional screw. The top of a set of second bidirectional screws is connected to the crank handle. The inner two ends of the limiting plate are slidably connected to the clamping plate. The inner two ends of the clamping plate are threadedly connected to the outer wall of the second bidirectional screw. Two sets of clamping plates are set.

3. The hot bending forming mold for the warped corner of automotive tempered glass according to claim 1, characterized in that, include: Limiting mechanism; The limiting mechanism includes: a tough steel plate; The tough steel plates are set in two groups, with automotive tempered glass sandwiched between the two groups of tough steel plates, and clamping blocks sandwiched around the outer walls of the two groups of tough steel plates.

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