A hot bending device for producing curved glass cover plates

Abstract

The present invention provides a hot bending device for producing curved glass cover plates, which belongs to the field of glass hot bending technology and is used to solve the technical problem that existing hot bending equipment for curved glass cover plates can only perform hot bending individually and requires waiting during the heating and pressing process, resulting in low hot bending efficiency. The device comprises a workbench, two sliding columns are fixed on the top of the workbench, a plurality of clamps are slidingly arranged on the sliding columns, a rotating shaft is arranged in the middle of the workbench, a plurality of rotating rings are arranged on the rotating shaft, a damping mechanism is arranged between the rotating ring and the rotating shaft, an equidistant mechanism is arranged between the rotating rings, two cross bars are fixed on the side ends of the rotating rings, and a placement frame is fixed on the end of the cross bar; the present invention can perform hot bending operations on multiple straight glass cover plates at the same time to turn them into curved glass cover plates, with high hot bending efficiency. While waiting for heating, the previous batch of materials can be unloaded and the next batch of materials can be loaded, so as to make full use of the heating time and further improve the hot bending efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of glass thermal bending, and relates to a thermal bending device for producing curved glass cover plates. Background Art

[0002] Mobile phone glass cover products are mainly ultra-thin glass, which is made through a series of special processing processes such as glass slicing, profiling, polishing, hardening, ultrasonic cleaning, vacuum coating, and silk screen printing. With the widespread use of curved screens and curved glass cover plates, hot bending of glass cover plates has become an important step in the production of glass cover plates.

[0003] When hot bending, curved glass cover plates are generally heated by a graphite mold, and then a certain pressure is applied so that the graphite mold presses the edge of the glass cover plate into a curved surface. In actual use, the operator needs to place the straight glass cover plate into the corresponding graphite mold, and then place the graphite mold into the hot bending equipment for heating and pressing. During operation, the operator can only place one mold at a time, and needs to wait during the heating and pressing process of the graphite mold, resulting in low efficiency of hot bending.

[0004] Based on this, we designed a hot bending device for the production of curved glass cover plates with high hot bending efficiency. Summary of the Invention

[0005] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose a thermal bending device for producing curved glass cover plates. The technical problem to be solved by the device is: how to improve the thermal bending efficiency of curved glass cover plates.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A hot bending device for producing curved glass cover plates comprises a workbench, two sliding columns are fixed above the workbench, and a number of equally spaced clamping plates are slidingly arranged on the sliding columns, a heating ceramic plate is fixed in the middle of the clamping plates, an extension plate is fixed on the side end of the uppermost clamping plate, a hydraulic cylinder is installed on the workbench, and the upper end of the hydraulic cylinder is fixed to the extension plate, a first scissor-type mechanical structure is provided on the side ends of the plurality of clamping plates for maintaining equal spacing between the clamping plates, a rotating shaft is provided in the middle of the workbench for rotation, and a number of driving motors for driving the rotating shaft are provided below the workbench, and a There are several rotating rings, a damping mechanism is provided between the rotating rings and the rotating shaft, and an equidistant mechanism is provided between the rotating rings. Two cross bars are fixed to the side ends of the rotating rings, and the angles between the two cross bars connected to the rotating rings at different heights are different. A placement frame is fixed to the end of the cross bar, and a mold is placed on the placement frame at the corresponding position, and the mold and the splint are distributed alternately. A positioning mechanism is provided on the lowest rotating ring, and two blocks for blocking the cross bars are fixed on the workbench. A control cabinet is provided on the side end of the workbench, a temperature sensor is fixed on the splint, and an adjustment stud is bolted to the top cross bar.

[0008] The working principle of the present invention is as follows: when in use, the hydraulic cylinder drives the uppermost clamping plate to move downward. At this time, under the action of the first scissor-type mechanical structure, the distance between each adjacent two clamping plates is kept equal, so each clamping plate is gradually pressed down. When the uppermost clamping plate is squeezed to the adjusting stud, the cross bar and the rotating ring will move downward, and at this time, the uppermost heating ceramic sheet will fit with the upper surface of the uppermost mold. At this time, under the action of the equidistant mechanism, while each mold moves downward, the distance between them is always equal. When the lowermost heating ceramic sheet fits with the lower surface of the lowermost mold, under the action of the positioning mechanism, the lowermost rotating ring, cross bar and mold will not move downward. At this time, the uppermost clamping plate continues to move downward, and finally the upper and lower sides of each mold are fit with the heating ceramic sheet. At this time, the heating ceramic sheet begins to heat the mold and the straight glass cover plate inside it. The temperature of the mold is detected by the temperature sensor. After heating at a fixed temperature for a period of time to soften the straight glass cover plate, the hydraulic cylinder continues to contract. At this time, the heating ceramic sheet squeezes the mold to make the inside The straight glass cover plate is pressed into a curved glass cover plate and heated for a certain period of time. During the heating time, the operator can put the remaining straight glass cover plates that need to be bent into the mold and place the mold in the placement frame outside the splint. Then the hydraulic cylinder rises, driving the various splints, cross bars and molds to reset, and then the driving motor drives the rotating shaft to rotate one circle. Under the action of the damping mechanism, each rotating ring rotates synchronously. When the lowest cross bar is blocked by the block, it will stop rotating, and the remaining rotating rings continue to rotate with the rotating shaft. Under the action of the equidistant mechanism, the mold with hot bending is just moved between the heated ceramic sheets. The molds that have finished hot bending are scattered on the outside of the splint, and these molds are not in the same vertical direction, which is convenient for the operator to remove them and re-place new straight glass cover plates and molds to be heated. By repeating the above process, multiple straight glass cover plates can be hot bent at the same time to make them curved glass cover plates. The hot bending efficiency is high. Moreover, during the heating process, the operator can unload the previous batch and load the next batch, making full use of the heating time and further improving the hot bending efficiency.

[0009] The damping mechanism includes a lifting ring slidably sleeved on the rotating shaft, and an annular groove is provided on the outer wall of the lifting ring. The rotating ring is rotatably set in the annular groove. Rubber pads are provided on the upper and lower sides of the rotating ring, and a plurality of circular holes are provided on the rotating ring. Damping springs are placed in the circular holes, and the two ends of the damping spring are respectively against the two rubber pads.

[0010] With the above structure, under the action of the damping spring, the two rubber pads are against the inner walls of the annular groove on both sides, so that when the rotating ring and the lifting ring rotate relative to each other, they will be subjected to a large friction force. Through the friction force, the lifting ring can drive the rotating ring to rotate when the shaft rotates, and the rotating ring will stop rotating when it encounters an obstruction.

[0011] The equidistant mechanism includes a fixed plate fixed inside the lifting ring, a long slot is provided on the rotating shaft, and the fixed plate is located inside the long slot, a second scissor-type mechanical structure is provided between each fixed plate for maintaining equal spacing between each fixed plate, two pulling ropes are connected between adjacent rotating rings, a cover plate is fixed to the upper end of the rotating shaft, and a tension spring is sleeved on the rotating shaft, the upper end of the tension spring is fixed to the cover plate, and the lower end is fixed to the uppermost lifting ring, and a limiting component is provided on the uppermost splint for preventing the rotating ring from descending.

[0012] When the above structure is adopted, the distance between each adjacent lifting ring is kept equal by the second scissor-type mechanical structure. Under the action of the tension spring, each lifting ring and rotating ring will not fall off. Moreover, during the rotation of the rotating ring, when the bottom rotating ring is blocked by the block and cannot rotate, the rotating ring above it continues to rotate, which will generate tension on one of the pulling ropes. When the pulling rope is taut, the other pulling rope is in a relaxed state. Moreover, when the pulling rope is taut, under the action of the limiting assembly, the upper lifting ring will not be pulled downward, and the rotating ring above it will also stop rotating. By analogy, each rotating ring will stop rotating, and the placement frames located inside the splint can be in the same vertical direction, while the placement frames located outside the splint are not in the same vertical direction, which is convenient for the operator to operate.

[0013] The limiting assembly includes a horizontal plate fixed to the side end of the uppermost clamping plate and a cylinder fixed above the uppermost lifting ring. An outer ring is fixed to the upper edge of the cylinder, and the end of the horizontal plate is located below the outer ring.

[0014] With the above structure, when the rotating shaft drives the rotating ring to rotate and the pulling rope is tightened, the pulling rope pulls the rotating ring downward, but under the action of the cross plate, the rotating ring cannot move downward, so the rotating ring stops rotating under the action of the pulling rope.

[0015] The mold includes an upper mold and a lower mold, and both the upper mold and the lower mold are made of graphite. The lower mold is provided with a plurality of positioning holes, and support springs are provided in the positioning holes. The side end of the lower mold is provided with two side plates for resting on the edge of the placement frame. The upper mold is provided with a plurality of positioning rods, and the positioning rods are aligned with the positioning holes.

[0016] With the above structure, when in use, the straight glass cover with heat bending can be placed between the upper mold and the lower mold, and the positioning rod is aligned with the positioning hole and buckled. At this time, the upper mold is supported by the support spring to prevent the edge of the straight glass cover from being crushed. Then the mold is placed on the placement frame so that the side panels are placed on the edge of the placement frame.

[0017] The positioning mechanism includes a slider, a sliding groove is opened on the inner wall of the long groove, the slider is slidably arranged in the sliding groove, and the slider is hinged to the lower end of the second scissors-type mechanical structure, the lower end of the lowest fixed plate is connected to the positioning plate, and the side end of the rotating shaft is fixed with an electric push rod, and the output shaft of the electric push rod is aligned with the positioning plate, and the two lowest cross bars are both provided with a first distance sensor and a second distance sensor.

[0018] With the above structure, when in use, according to the height of the lower surface of the mold, when the first distance sensor detects that the lowest clamping plate is close to and attached to the upper surface of the mold, the control cabinet will control the electric push rod to start, and the output shaft of the electric push rod will press against the positioning plate to limit the movement of the positioning plate. At this time, the clamping plate continues to descend, and the lowest rotating ring and its corresponding mold will not continue to move. Instead, the slider rises. Thereafter, the clamping plate continues to descend. When the second distance sensor detects that the height of the upper clamping plate is exactly in contact with the upper surface of the mold, the hydraulic cylinder stops extending and retracting. At this time, the upper and lower sides of each mold are in contact with the heating ceramic sheet, which increases the heating rate and further improves the hot bending efficiency.

[0019] Compared with the existing technology, this hot bending device for producing curved glass cover plates has the following advantages:

[0020] 1. Through the clamping plate, heating ceramic sheet, rotating shaft, rotating ring, cross bar, placement frame, equidistant mechanism and damping mechanism, multiple straight glass cover plates can be bent at the same time to make them into curved glass cover plates. The bending efficiency is high. In addition, while waiting for heating, the operator can unload the previous batch and load the next batch, making full use of the heating time and further improving the bending efficiency.

[0021] 2. Through the damping mechanism and the equidistant mechanism, the molds that have completed hot bending are dispersed on the outside of the splint, and these molds are not in the same vertical direction, so the operating space is large, which makes it convenient for the operator to take them out and re-place the new straight glass cover plate and mold to be heated.

[0022] 3. Through the positioning mechanism, the position of the splint and the mold is further adjusted so that the upper and lower surfaces of each mold are in contact with the heating ceramic sheet during heating, thereby increasing the heating rate and further improving the hot bending efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the lower shaft side of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the splint in the present invention;

[0026] Figure 4It is a structural schematic diagram of some components in the present invention;

[0027] Figure 5 It is a structural schematic diagram of the isometric mechanism of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the mold in the present invention;

[0029] Figure 7 It is a structural schematic diagram of the damping mechanism in the present invention;

[0030] Figure 8 It is a partial cross-sectional structural schematic diagram of the positioning mechanism in the present invention;

[0031] In the figure: 1. workbench; 2. slide column; 3. clamping plate; 4. heating ceramic plate; 5. extension plate; 6. hydraulic cylinder; 7. first scissor-type mechanical structure; 8. rotating shaft; 9. driving motor; 10. rotating ring; 11. damping mechanism; 1101. lifting ring; 1102. annular groove; 1103. circular hole; 1104. rubber pad; 1105. damping spring; 12. equidistant mechanism; 1201. long groove; 1202. fixing plate; 1203. second scissor-type mechanical structure; 1204. pulling rope; 1205. cover plate; 1206. tension spring; 120 7. Cylinder; 1208. Outer ring; 1209. Cross plate; 13. Cross bar; 14. Placement frame; 15. Mold; 1501. Lower mold; 1502. Upper mold; 1503. Side plate; 1504. Positioning hole; 1505. Support spring; 1506. Positioning rod; 16. Stop block; 17. Control cabinet; 18. Temperature sensor; 19. Positioning mechanism; 1901. Slide; 1902. Slider; 1903. Positioning plate; 1904. Electric push rod; 1905. First distance sensor; 1906. Second distance sensor; 20. Adjustment stud. DETAILED DESCRIPTION

[0032] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0033] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this patent.

[0035] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0036] See also Figure 1-8, This embodiment provides a hot bending device for producing curved glass cover plates, including a workbench 1, two sliding columns 2 are fixed above the workbench 1, and a number of equally spaced clamping plates 3 are slidingly arranged on the sliding columns 2, a heating ceramic sheet 4 is fixed in the middle of the clamping plates 3, an extension plate 5 is fixed on the upper side end of the top clamping plate 3, a hydraulic cylinder 6 is installed on the workbench 1, and the upper end of the hydraulic cylinder 6 is fixed to the extension plate 5, and a first scissor-type mechanical structure 7 is provided on the side ends of the plurality of clamping plates 3 for maintaining the equal spacing between the respective clamping plates 3, a rotating shaft 8 is rotatably arranged in the middle of the workbench 1, and a number of driving motors 9 for driving the rotating shaft 8 to rotate are arranged below the workbench 1, and a number of rotating rings 10 are provided on the rotating shaft 8, which rotates A damping mechanism 11 is provided between the ring 10 and the rotating shaft 8, and an equidistant mechanism 12 is provided between several rotating rings 10. Two cross bars 13 are fixed to the side ends of the rotating ring 10, and the angles between the two cross bars 13 connected to the rotating rings 10 at different heights are different. A placement frame 14 is fixed to the end of the cross bar 13, and a mold 15 is placed on the placement frame 14 at the corresponding position, and the mold 15 and the splint 3 are alternately distributed. A positioning mechanism 19 is provided on the lowest rotating ring 10, and two blocks 16 for blocking the cross bars 13 are fixed on the workbench 1. A control cabinet 17 is provided at the side end of the workbench 1, a temperature sensor 18 is fixed on the splint 3, and an adjusting stud 20 is bolted to the top cross bar 13;When in use, the hydraulic cylinder 6 drives the top clamping plate 3 to move downward. At this time, under the action of the first scissor-type mechanical structure 7, the distance between each adjacent clamping plate 3 remains equal, so each clamping plate 3 is gradually pressed down. When the top clamping plate 3 is squeezed to the adjusting stud 20, the cross bar 13 and the rotating ring 10 will move downward, and at this time the top heating ceramic sheet 4 is in contact with the upper surface of the top mold 15. At this time, under the action of the equidistant mechanism 12, while each mold 15 moves downward, the distance between them is always equal. When the bottom heating ceramic sheet 4 is in contact with the bottom When the lower surface of the mold 15 is in contact, under the action of the positioning mechanism 19, the lowest rotating ring 10, the cross bar 13 and the mold 15 will not move downward. At this time, the uppermost clamping plate 3 continues to move downward, and finally the upper and lower sides of each mold 15 are in contact with the heated ceramic sheet 4. At this time, the heated ceramic sheet 4 begins to heat the mold 15 and the straight glass cover plate inside it. The temperature of the mold 15 is detected by the temperature sensor 18. After heating at a fixed temperature for a period of time to soften the straight glass cover plate, the hydraulic cylinder 6 continues to contract. At this time, the heated ceramic sheet 4 squeezes the mold 15 to press the internal The straight glass cover plate is pressed into a curved glass cover plate and heated for a certain period of time. During the heating time, the operator can put the remaining straight glass cover plates that need to be bent into the mold 15 and place the mold 15 in the placement frame 14 located outside the clamping plate 3. Then the hydraulic cylinder 6 rises to drive each clamping plate 3, the cross bar 13 and the mold 15 to reset. Then the driving motor 9 drives the rotating shaft 8 to rotate one circle. Under the action of the damping mechanism 11, each rotating ring 10 rotates synchronously. When the bottom cross bar 13 is blocked by the block 16, it stops rotating. The remaining rotating rings 10 continue to rotate with the rotating shaft 8. Under the action of the equidistant mechanism 12, the hot bending mold 15 moves exactly between the heated ceramic sheets 4. The hot-bent molds 15 are scattered outside the clamping plate 3 and are not in the same vertical direction. This makes it easy for the operator to remove them and replace them with new straight glass cover sheets to be heated and the molds 15. Repeating the above process can achieve simultaneous hot bending of multiple straight glass cover sheets to form curved glass cover sheets. The hot bending efficiency is high. During the heating process, the operator can unload the previous batch and load the next batch, making full use of the heating time and further improving the hot bending efficiency.

[0037] The damping mechanism 11 includes a lifting ring 1101 that is slidably sleeved on the rotating shaft 8, and an annular groove 1102 is provided on the outer wall of the lifting ring 1101. The rotating ring 10 is rotatably set in the annular groove 1102. Rubber pads 1104 are provided on the upper and lower sides of the rotating ring 10, and a plurality of circular holes 1103 are provided on the rotating ring 10. Damping springs 1105 are placed in the circular holes 1103, and the two ends of the damping spring 1105 are respectively against the two rubber pads 1104; under the action of the damping spring 1105, the two rubber pads 1104 are against the inner walls of the annular groove 1102 on both sides, so that the rotating ring 10 and the lifting ring 1101 will be subjected to a large friction force when relative rotation occurs. Through the friction force, the lifting ring 1101 can drive the rotating ring 10 to rotate when the rotating shaft 8 rotates, and the rotating ring 10 will stop rotating when it is obstructed.

[0038] The equidistant mechanism 12 includes a fixed plate 1202 fixed inside the lifting ring 1101, a long slot 1201 is opened on the rotating shaft 8, and the fixed plate 1202 is located inside the long slot 1201, and a second scissor-type mechanical structure 1203 is provided between each fixed plate 1202 for maintaining the equal spacing between each fixed plate 1202, two pulling ropes 1204 are connected between adjacent rotating rings 10, a cover plate 1205 is fixed to the upper end of the rotating shaft 8, and a tension spring 1206 is sleeved on the rotating shaft 8, and the upper end of the tension spring 1206 is fixed to the cover plate 1205, and the lower end is fixed to the uppermost lifting ring 1101, and a limiting component for preventing the rotating ring 10 from falling is provided on the uppermost clamping plate 3; when in use, the second scissor-type mechanical structure 1203 keeps the spacing between each adjacent two lifting rings 1101 equal, Under the action of the tension spring 1206, each lifting ring 1101 and rotating ring 10 will not fall, and during the rotation of the rotating ring 10, when the bottom rotating ring 10 is blocked by the block 16 and cannot rotate, the rotating ring 10 above it continues to rotate, which will generate tension on one of the pulling ropes 1204. When the pulling rope 1204 is tightened, the other pulling rope 1204 is in a relaxed state, and when the pulling rope 1204 is tightened, under the action of the limiting component, the upper lifting ring 1101 will not be pulled downward, and the rotating ring 10 above it will also stop rotating. By analogy, each rotating ring 10 will stop rotating, and the placement frames 14 located inside the splint 3 can be in the same vertical direction, while the placement frames 14 located outside the splint 3 are not in the same vertical direction, which is convenient for the operator to operate.

[0039] The limiting assembly includes a horizontal plate 1209 fixed to the side end of the top splint 3 and a cylinder 1207 fixed above the top lifting ring 1101, an outer ring 1208 is fixed to the upper edge of the cylinder 1207, and the end of the horizontal plate 1209 is located below the outer ring 1208; when the rotating shaft 8 drives the rotating ring 10 to rotate and tightens the pulling rope 1204, the pulling rope 1204 pulls the rotating ring 10 downward, but under the action of the horizontal plate 1209, the rotating ring 10 cannot move downward, so the rotating ring 10 will stop rotating under the action of the pulling rope 1204.

[0040] The mold 15 includes an upper mold 1502 and a lower mold 1501, and both the upper mold 1502 and the lower mold 1501 are made of graphite. A plurality of positioning holes 1504 are provided on the lower mold 1501, and support springs 1505 are provided in the positioning holes 1504. The side ends of the lower mold 1501 are provided with two side plates 1503 for resting on the edge of the placement frame 14. A plurality of positioning rods 1506 are provided on the upper mold 1502, and the positioning rods 1506 are aligned with the positioning holes 1504. When in use, the straight glass cover with heat bending can be placed between the upper mold 1502 and the lower mold 1501, and the positioning rods 1506 are aligned and buckled with the positioning holes 1504. At this time, the upper mold 1502 is supported by the support springs 1505 to prevent the edge of the straight glass cover from being crushed. Then the mold 15 is placed on the placement frame 14 so that the side plates 1503 rest on the edge of the placement frame 14.

[0041] The positioning mechanism 19 includes a slider 1902, a slide groove 1901 is provided on the inner wall of the long groove 1201, the slider 1902 is slidably set in the slide groove 1901, and the slider 1902 is hinged to the lower end of the second scissor-type mechanical structure 1203, the lower end of the lowest fixed plate 1202 is connected to the positioning plate 1903, and the side end of the rotating shaft 8 is fixed with an electric push rod 1904, and the output shaft of the electric push rod 1904 is aligned with the positioning plate 1903, and the two lowest cross bars 13 are provided with a first distance sensor 1905 and a second distance sensor 1906; when in use, according to the height of the lower surface of the mold 15, when the first distance sensor 1905 detects the lowermost When the splint 3 approaches and sticks to the upper surface of the mold 15, the control cabinet 17 will control the electric push rod 1904 to start, and the output shaft of the electric push rod 1904 will press against the positioning plate 1903 to limit the movement of the positioning plate 1903. At this time, the splint 3 continues to descend, and the lowest rotating ring 10 and its corresponding mold 15 will not continue to move. Instead, the slider 1902 rises. After that, the splint 3 continues to descend. When the second distance sensor 1906 detects that the height of the upper splint 3 is exactly in contact with the upper surface of the mold 15, the hydraulic cylinder 6 stops extending and retracting. At this time, the upper and lower sides of each mold 15 are in contact with the heating ceramic sheet 4, which increases the heating rate and further improves the hot bending efficiency.

[0042] The above-mentioned fixing methods are the most commonly used fixing connection methods in this field, such as welding, bolt connection, etc.; the above-mentioned electrical components such as the drive motor 9, the electric push rod 1904, the first distance sensor 1905, the second distance sensor 1906, the heating ceramic plate 4, the hydraulic cylinder 6 and the temperature sensor 18, etc., are all existing technology products and can be directly purchased and used in the market. The specific principles will not be repeated here.

[0043] Working principle of the present invention:

[0044] When in use, the hydraulic cylinder 6 drives the top clamping plate 3 to move downward. At this time, under the action of the first scissor-type mechanical structure 7, the distance between each adjacent clamping plate 3 remains equal, so each clamping plate 3 is gradually pressed down. When the top clamping plate 3 is squeezed to the adjusting stud 20, the cross bar 13 and the rotating ring 10 will move downward, and at this time the top heating ceramic sheet 4 is in contact with the upper surface of the top mold 15. At this time, under the action of the second scissor-type mechanical structure 1203, while each mold 15 moves downward, the distance between them is always equal. When the first distance sensor 1905 detects the distance between the bottom heating ceramic sheet 4 and the bottom mold 15 When the lower surface is fitted, the control cabinet 17 controls the electric push rod 1904 to start, and the output shaft of the electric push rod 1904 will press against the positioning plate 1903 to limit the movement of the positioning plate 1903. The lowest rotating ring 10, the cross bar 13 and the mold 15 will not move downward. At this time, the uppermost clamping plate 3 continues to move downward, and finally makes the upper and lower sides of each mold 15 fit with the heated ceramic sheet 4. At this time, the control cabinet 17 controls the heated ceramic sheet 4 to start heating the mold 15 and the straight glass cover plate inside it. The temperature of the mold 15 is detected by the temperature sensor 18. After heating at a fixed temperature for a period of time to soften the straight glass cover plate, the hydraulic cylinder 6 continues to contract. At this time, the heated ceramic sheet 4 The sheet 4 squeezes the mold 15, pressing the straight glass cover plate inside into a curved glass cover plate and continuously heating it for a period of time. During the heating time, the operator can put the remaining straight glass cover plates that need to be bent into the mold 15, and place the mold 15 in the placement frame 14 located outside the splint 3. Then the hydraulic cylinder 6 rises, driving each splint 3, the cross bar 13 and the mold 15 to reset, and then the driving motor 9 drives the rotating shaft 8 to rotate one circle. Under the action of the friction between the rotating ring 10 and the lifting ring 1101, each rotating ring 10 rotates synchronously. When the bottom cross bar 13 is blocked by the block 16, it stops rotating, and the remaining rotating rings 10 continue to follow the rotating shaft 8 Rotate, under the action of the pulling rope 1204, the mold 15 with heat bending is just moved between the heating ceramic sheets 4, and the molds 15 that have finished heat bending are scattered on the outside of the splint 3, and these molds 15 are not in the same vertical direction, which is convenient for the operator to take them out and re-place the new straight glass cover plate to be heated and the mold 15. After one heat bending is completed, the next time the heat bending is performed, the driving motor 9 is flipped, and the above process is repeated to realize the heat bending of multiple straight glass cover plates at the same time, making them into curved glass cover plates, with high heat bending efficiency. In addition, during the heating process, the operator can unload the previous batch and load the next batch, making full use of the heating time and further improving the heat bending efficiency.

[0045] In summary, through the splint 3, heating ceramic sheet 4, rotating shaft 8, rotating ring 10, cross bar 13, placement frame 14, equidistant mechanism 12 and damping mechanism 11, multiple straight glass cover plates can be hot-bent at the same time to make them into curved glass cover plates, and the hot bending efficiency is high. In addition, while waiting for heating, the operator can unload the previous batch and load the next batch, making full use of the heating time and further improving the hot bending efficiency; through the damping mechanism 11 and the equidistant mechanism 12, the molds 15 that have completed hot bending are scattered on the outside of the splint 3, and these molds 15 are not in the same vertical direction, and the operating space is large, which is convenient for the operator to take them out and re-place new straight glass cover plates and molds 15 to be heated; through the positioning mechanism 19, the positions of the splint 3 and the molds 15 are further adjusted, so that the upper and lower surfaces of each mold 15 are in contact with the heating ceramic sheet 4 during heating, thereby improving the heating rate and further improving the hot bending efficiency.

[0046] The above describes in detail the preferred embodiments of this patent, but this patent is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A hot bending device for producing curved glass cover plates, comprising a workbench (1), characterized in that: Two slide columns (2) are fixed above the workbench (1), and a number of equally spaced splints (3) are slidingly arranged on the slide columns (2), a heating ceramic sheet (4) is fixed in the middle of the splints (3), an extension plate (5) is fixed on the upper side of the uppermost splint (3), a hydraulic cylinder (6) is installed on the workbench (1), and the upper end of the hydraulic cylinder (6) is fixed to the extension plate (5), and a first scissor-type mechanical structure (7) for maintaining equal spacing between the splints (3) is arranged on the side ends of the plurality of splints (3), a rotating shaft (8) is rotatably arranged in the middle of the workbench (1), and a number of driving motors (9) for driving the rotating shaft (8) to rotate are arranged below the workbench (1), a number of rotating rings (10) are arranged on the rotating shaft (8), and a damping mechanism is arranged between the rotating ring (10) and the rotating shaft (8). The invention discloses a structure (11), and an equidistant mechanism (12) is provided between the rotating rings (10), two cross bars (13) are fixed to the side ends of the rotating rings (10), and the angles between the two cross bars (13) connected to the rotating rings (10) at different heights are different, a placement frame (14) is fixed to the end of the cross bar (13), and a mold (15) is placed on the placement frame (14) at the corresponding position, and the mold (15) and the clamping plate (3) are alternately distributed, a positioning mechanism (19) is provided on the lowest rotating ring (10), two blocks (16) for blocking the cross bars (13) are fixed on the workbench (1), a control cabinet (17) is provided on the side ends of the workbench (1), a temperature sensor (18) is fixed on the clamping plate (3), and an adjusting stud (20) is bolted to the top cross bar (13).

2. The hot bending device for producing curved glass cover plates according to claim 1, characterized in that: The damping mechanism (11) comprises a lifting ring (1101) slidably sleeved on the rotating shaft (8), and an annular groove (1102) is provided on the outer wall of the lifting ring (1101), and the rotating ring (10) is rotatably arranged in the annular groove (1102), and rubber pads (1104) are provided on the upper and lower sides of the rotating ring (10), and a plurality of circular holes (1103) are provided on the rotating ring (10), and damping springs (1105) are placed in the circular holes (1103), and the two ends of the damping spring (1105) are respectively against the two rubber pads (1104).

3. The hot bending device for producing curved glass cover plates according to claim 2, characterized in that: The equidistant mechanism (12) comprises a fixed plate (1202) fixed inside the lifting ring (1101), a long slot (1201) is provided on the rotating shaft (8), and the fixed plate (1202) is located inside the long slot (1201), a second scissor-type mechanical structure (1203) for maintaining equal spacing between the fixed plates (1202) is provided between each fixed plate (1202), two pulling ropes (1204) are connected between adjacent rotating rings (10), a cover plate (1205) is fixed to the upper end of the rotating shaft (8), and a tension spring (1206) is sleeved on the rotating shaft (8), and the upper end of the tension spring (1206) is fixed to the cover plate (1205), and the lower end is fixed to the uppermost lifting ring (1101), and a limit assembly for preventing the rotating ring (10) from descending is provided on the uppermost clamping plate (3).

4. The hot bending device for producing curved glass cover plates according to claim 3, characterized in that: The limiting assembly comprises a transverse plate (1209) fixed to the side end of the uppermost clamping plate (3) and a cylinder (1207) fixed above the uppermost lifting ring (1101); an outer ring (1208) is fixed to the upper edge of the cylinder (1207), and the end of the transverse plate (1209) is located below the outer ring (1208).

5. A hot bending device for producing curved glass cover plates according to claim 1 or 2, characterized in that: The mold (15) includes an upper mold (1502) and a lower mold (1501), and both the upper mold (1502) and the lower mold (1501) are made of graphite. The lower mold (1501) is provided with a plurality of positioning holes (1504), and the positioning holes (1504) are provided with support springs (1505). The side ends of the lower mold (1501) are provided with two side plates (1503) for resting on the edges of the placement frame (14). The upper mold (1502) is provided with a plurality of positioning rods (1506), and the positioning rods (1506) are aligned with the positioning holes (1504).

6. The hot bending device for producing curved glass cover plates according to claim 3, characterized in that: The positioning mechanism (19) includes a slider (1902), a slide groove (1901) is provided on the inner wall of the long groove (1201), the slider (1902) is slidably arranged in the slide groove (1901), and the slider (1902) is hinged to the lower end of the second scissor-type mechanical structure (1203), the lower end of the lowest fixed plate (1202) is connected to the positioning plate (1903), and the side end of the rotating shaft (8) is fixed with an electric push rod (1904), and the output shaft of the electric push rod (1904) is aligned with the positioning plate (1903), and the two lowest cross bars (13) are both provided with a first distance sensor (1905) and a second distance sensor (1906).

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