A self-positioning graphite mold for hot bending of screen glass

Abstract

The invention discloses a self-positioning graphite mold for hot bending of screen glass, which relates to the technical field of hot bending of glass, and comprises a heating box, a lower mold and an upper mold, wherein a threaded sleeve is rotatably provided at the middle of the top surface of the heating box, a screw rod 2 is connected with the inner thread of the threaded sleeve, and a gear 1 is fixedly connected to the upper outer wall of the threaded sleeve; a drying mechanism is provided in the heating box, a short shaft is rotatably provided at the top of the heating box, a driving mechanism is provided at the top of the short shaft, and a gear 2 is fixedly connected to the outer wall of the bottom of the short shaft; support plates are symmetrically provided on the top surface of the heating box, a screw rod 1 is rotatably provided between the support plates, a micro motor is provided at one end of the screw rod 1, a rectangular threaded sleeve is threadedly connected to the upper end of the screw rod 1, and a transmission mechanism is provided on the rectangular threaded sleeve; the invention facilitates the drying mechanism to work first by using the transmission mechanism, thereby facilitating comprehensive wiping of the upper mold, avoiding water marks or water drops on the upper mold, and improving the success rate of hot bending of screen glass and the qualified rate of products.

Description

Technical Field

[0001] The invention relates to the technical field of glass thermal bending, and in particular to a self-positioning graphite mold for thermal bending of screen glass. Background Art

[0002] Screen glass hot bending is to heat the screen glass to form a certain shape; and when hot bending the screen glass, a graphite mold is required. However, when the existing graphite mold is used, the screen glass will produce moisture when it is heated and bent, and this moisture will fall on the upper mold to form water marks or water droplets. When the screen glass is pressed, the water marks or water droplets on the upper mold will cause the screen glass to break, thereby causing the hot bending of the screen glass to fail, reducing the success rate of hot bending of the screen glass and the qualified rate of screen glass production. Summary of the invention

[0003] In order to solve the problems in the background technology, the present invention proposes a self-positioning graphite mold for hot bending of screen glass.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A self-positioning graphite mold for hot bending of screen glass, comprising a heating box, a lower mold and an upper mold, a threaded sleeve is rotatably provided in the middle of the top surface of the heating box, a screw rod 2 is connected to the inner thread of the threaded sleeve, and the bottom of the screw rod 2 is movably penetrated into the heating box and a mounting plate is rotatably provided, the upper mold is installed at the bottom of the mounting plate, a guide rod is symmetrically provided on the top surface of the mounting plate, the bottom of the heating box is slidably arranged with the lower mold, and a gear 1 is fixedly connected to the upper outer wall of the threaded sleeve;

[0006] The heating box is provided with a drying mechanism acting on the upper mold, the top of the heating box is rotatably provided with a short shaft, the top of the short shaft is provided with a driving mechanism acting on the drying mechanism, and a second gear is fixedly connected to the outer wall of the bottom of the short shaft;

[0007] The top surface of the heating box is symmetrically provided with support plates, a screw rod 1 is rotatably provided between the support plates, one end of the screw rod 1 is provided with a micro motor, a rectangular threaded sleeve is threadedly connected to the screw rod 1, and a transmission mechanism is provided on the rectangular threaded sleeve that first acts on gear 2 and then acts on gear 1.

[0008] Preferably, the transmission mechanism includes a strip frame fixedly connected to one side of the rectangular threaded sleeve, a movable block slidably arranged in the strip frame and a second extrusion spring, and the second extrusion spring is located at an end away from the micro motor, the movable block is provided with a strip tooth plate 1 meshing with the second gear, a limit plate is fixedly provided on one side of the top surface of the heating box, and the strip frame is fixedly connected with a second strip tooth plate matching the first gear.

[0009] Preferably, the drying mechanism comprises two slideways symmetrically arranged on the top surface of the heating box, two strong magnets slidably arranged in the two slideways, and a vertical wiping plate arranged at the bottom of the two strong magnets, and two transverse wiping plates are arranged between the tops of the vertical wiping plates to rotate through two torsion spring shafts, and a fixing piece is arranged on the two transverse wiping plates;

[0010] A rectangular opening is provided at the bottom of the vertical wiping plate, and a slider 2 is slidably provided in the rectangular opening. A horizontal wiping plate 1 is rotatably provided between the sliders 2 via a torsion spring shaft 1. An extrusion spring 1 is provided between the slider 2 and the rectangular opening, and a cylinder is provided at the rear end of the torsion spring shaft 1. An adjusting piece matching the cylinder is provided on the rear end surface of the heating box.

[0011] Preferably, the adjusting member includes a travel groove opened on the rear end surface of the heating box, a vertical groove opened at one end of the travel groove, and a wiping groove opened at one end of the vertical groove, and the wiping groove is connected to the travel groove through an inclined downward pressure groove.

[0012] Preferably, the fixing part includes a bar magnet 1 arranged on a second horizontal wiping plate, a bar magnet 2 cooperating with the bar magnet 1 is fixedly connected between the vertical wiping plates, and the outer end faces of the bar magnet 2 and the bar magnet 1 are both inclined surfaces, and an unlocking plate acting on the second horizontal wiping plate is fixedly connected to the side of the heating box.

[0013] Preferably, the driving mechanism includes a slideway 1 symmetrically arranged on the top of the heating box, a strong magnet 1 slidably arranged in the slideway 1 and adsorbed by the strong magnet 2, and a return spring arranged in the slideway 1, a winding wheel is fixedly connected to the top of the short shaft, a pulley is rotatably provided on the top surface of the heating box, a traction rope is fixedly connected to one side surface of the strong magnet, and one end of the traction rope passes through the pulley and is fixedly connected to the winding wheel.

[0014] Preferably, positioning plates are fixedly connected to the side surface and rear end surface of the lower mold, and a sliding sleeve cooperating with the positioning plate is provided on the mounting plate.

[0015] Preferably, slide rails are symmetrically fixed to the inner bottom surface of the heating box, and a slider 1 cooperating with the slide rails is fixed to the lower mold.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] The present invention uses a transmission mechanism to facilitate first driving the drying mechanism to work, thereby facilitating comprehensive wiping of the upper mold, avoiding the appearance of water marks or water drops on the upper mold, thereby avoiding the phenomenon of breakage during hot bending of the screen glass, and improving the success rate of hot bending of the screen glass and the qualified rate of the product; then the upper mold is raised and lowered to achieve the upper and lower molds being closed, which is convenient for hot bending of the screen glass; wherein, through the use of an adjusting member, it is convenient to change the position of the transverse wiping plate one, so that the transverse wiping plate one can wipe and dry the upper mold after moving to a specific position, and finally the transverse wiping plate one is reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It shows a schematic structural diagram of a front viewing angle provided by an embodiment of the present invention;

[0019] Figure 2 It shows a schematic diagram of a structure according to a top-down perspective provided by an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of a cross-sectional structure at a front viewing angle provided by an embodiment of the present invention is shown;

[0021] Figure 4 A schematic structural diagram of a transmission mechanism provided by an embodiment of the present invention from a first viewing angle is shown;

[0022] Figure 5 A schematic structural diagram of a transmission mechanism according to a second viewing angle is shown;

[0023] Figure 6 A schematic diagram of the structure of a bar frame provided according to an embodiment of the present invention is shown;

[0024] Figure 7 A schematic structural diagram of an upper mold and a lower mold provided according to an embodiment of the present invention is shown;

[0025] Figure 8 A schematic structural diagram of a drying mechanism provided by an embodiment of the present invention from a first viewing angle is shown;

[0026] Fig. 9 A structural schematic diagram of a drying mechanism provided by an embodiment of the present invention from a second viewing angle is shown;

[0027] Fig.10 A schematic structural diagram of a drying mechanism provided by an embodiment of the present invention from a third viewing angle is shown;

[0028] Fig.11 A schematic structural diagram of an adjusting member provided according to an embodiment of the present invention is shown.

[0029] Legend:

[0030] 1. Heating box; 2. Threaded sleeve; 3. Winding wheel; 4. Pulley; 5. Screw rod 1; 6. Slideway 1; 7. Micro motor; 8. Strong magnet 1; 9. Guide rod; 10. Screw rod 2; 11. Traction rope; 12. Strip tooth plate 1; 13. Gear 1; 14. Strip tooth plate 2; 15. Adjustment member; 1501. Travel groove; 1502. Vertical groove; 1503. Wiping groove; 1504. Lower pressure groove; 16. Slideway 2; 17. Slide rail; 18. Lower mold; 19. Slider 1; 20. Positioning plate; 21. Vertical wiping plate ; 22. Unlocking plate; 23. Sliding sleeve; 24. Mounting plate; 25. Upper mold; 26. Strong magnet 2; 27. Horizontal wiping plate 1; 28. Rectangular opening; 29. ​​Sliding block 2; 30. Torsion spring shaft 1; 31. Extrusion spring 1; 32. Horizontal wiping plate 2; 33. Bar magnet 1; 34. Cylinder; 35. Torsion spring shaft 2; 36. Bar magnet 2; 37. Reset spring; 38. Short shaft; 39. Gear 2; 40. Rectangular threaded sleeve; 41. Extrusion spring 2; 42. Bar frame; 43. Movable block; 44. Limit plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-11 , the present invention provides a technical solution:

[0033] A self-positioning graphite mold for hot bending of screen glass comprises a heating box 1, a lower mold 18 and an upper mold 25 slidably arranged on the inner bottom surface of the heating box 1, a threaded sleeve 2 is rotatably arranged in the middle of the top surface of the heating box 1, a screw rod 10 is connected to the inner thread of the threaded sleeve 2, and the bottom of the screw rod 10 is movably penetrated into the heating box 1 and is rotatably provided with a mounting plate 24, an upper mold 25 is installed at the bottom of the mounting plate 24, a guide rod 9 is symmetrically arranged on the top surface of the mounting plate 24, and the guide rod 9 is movably penetrated out of the top of the heating box 1, and the use of the guide rod 9 facilitates the positioning of the upper mold 25, so that the upper mold 25 will not rotate during the descent process, and ensure that the upper mold 25 can be molded with the lower mold 18; the inner bottom of the heating box 1 is slidably arranged with the lower mold 18, and a gear 13 is fixedly connected to the upper outer wall of the threaded sleeve 2; the threaded sleeve 2 is driven to rotate by the rotation of the gear 13 to realize the lifting and lowering of the screw rod 10, thereby realizing the lifting and lowering of the upper mold 25;

[0034] A drying mechanism acting on the upper mold 25 is provided in the heating box 1. By using the drying mechanism, the upper mold 25 can be wiped thoroughly to avoid water marks or water drops on the upper mold 25, thereby avoiding the phenomenon of breakage when the screen glass is bent, thereby improving the success rate of the screen glass bending and the qualified rate of the product;

[0035] A short shaft 38 is rotatably provided at the top of the heating box 1, and a driving mechanism acting on the drying mechanism is provided at the top of the short shaft 38. The driving mechanism is used to drive the drying mechanism to dry the upper mold 25; a second gear 39 is fixedly connected to the outer wall at the bottom of the short shaft 38;

[0036] The top surface of the heating box 1 is symmetrically provided with support plates, and a screw rod 5 is rotatably provided between the support plates. A micro motor 7 is provided at one end of the screw rod 5 (the output shaft of the micro motor 7 can rotate forward or reverse), and a rectangular threaded sleeve 40 is threadedly connected to the screw rod 5. Through the mutual cooperation of the micro motor 7, the screw rod 5 and the rectangular threaded sleeve 40, it is convenient to provide power, thereby realizing the operation of the transmission mechanism; the rectangular threaded sleeve 40 is provided with a transmission mechanism that first acts on the gear 2 39 and then acts on the gear 13. Through the use of the transmission mechanism, it is convenient to first dry the upper mold 25 and remove the moisture in the upper mold 25 to ensure the qualified rate of the hot bending of the screen glass, and then the upper mold 25 is raised and lowered to realize the mold closing of the upper mold 25 and the lower mold 18, which is convenient for the hot bending of the screen glass.

[0037] In the present invention, the transmission mechanism includes a strip frame 42 fixedly connected to one side of the rectangular threaded sleeve 40, a movable block 43 slidably arranged in the strip frame 42, and a squeeze spring 2 41 (the maximum elastic force of the squeeze spring 2 41 is less than the adsorption force between the strong magnet 1 8 and the strong magnet 2 26), and the squeeze spring 2 41 is located at one end away from the micro motor 7. By using the squeeze spring 2 41, it is convenient to squeeze the movable block 43, so that the movable block 43 can be moved with the strip frame 42; a strip tooth plate 12 meshing with the gear 2 39 is provided on the movable block 43, and a limit plate 44 fixedly connected to one side of the top surface of the heating box 1 is provided for positioning the strip tooth plate 12 to ensure that the strip tooth plate 12 will not move after moving a distance; a strip tooth plate 2 14 cooperating with the gear 13 is fixedly connected to the strip frame 42.

[0038] In the present invention, the drying mechanism includes a slideway 16 symmetrically arranged on the top surface of the heating box 1, a strong magnet 26 slidably arranged in the slideway 16, and a vertical wiping plate 21 arranged at the bottom of the strong magnet 26. The use of the vertical wiping plate 21 facilitates wiping the front and rear end surfaces of the upper mold 25; a horizontal wiping plate 32 is provided between the tops of the vertical wiping plates 21 through a torsion spring shaft 35, wherein the torsion spring shaft 35 is composed of a shaft and a torsion spring, giving the horizontal wiping plate 32 a force to keep it tilted, and the horizontal wiping plate 32 is provided with a torsion spring shaft 35. The angle between the wiping plate 2 32 and the horizontal plane is the same as the angle between the side surface of the upper mold 25 and the horizontal plane, so that it is convenient to wipe and dry the side surface of the upper mold 25; by using the horizontal wiping plate 2 32, it is convenient to wipe one of the side surfaces and the bottom surface of the upper mold 25; a fixing part is provided on the horizontal wiping plate 2 32; by using the fixing part, it is convenient to fix the horizontal wiping plate 2 32 after wiping the upper mold 25, and then keep the horizontal wiping plate 2 32 in a horizontal state to facilitate the resetting of the horizontal wiping plate 2 32.

[0039] A rectangular opening 28 is provided at the bottom of the vertical wiping plate 21, and a slider 29 is slidably provided in the rectangular opening 28. A transverse wiping plate 27 is rotatably provided between the sliders 29 through a torsion spring shaft 30, wherein the torsion spring shaft 30 is composed of a shaft and a torsion spring, which gives a force to keep the transverse wiping plate 27 tilted, and the angle between the transverse wiping plate 27 and the horizontal plane is the same as the angle between the side surface of the upper mold 25 and the horizontal plane, so as to facilitate wiping and drying the side surface of the upper mold 25; an extrusion plate 27 is provided between the slider 29 and the rectangular opening 28. The compression spring 31 facilitates the resetting of the transverse wiping plate 27; the use of the transverse wiping plate 27 facilitates wiping the other side and bottom of the upper mold 25; a cylinder 34 is provided at the rear end of the torsion spring shaft 30, and an adjusting member 15 matching the cylinder 34 is provided on the rear end surface of the heating box 1. The use of the adjusting member 15 facilitates changing the position of the transverse wiping plate 27, so that the transverse wiping plate 27 can wipe and dry the upper mold 25 after moving to a specific position, and finally reset the transverse wiping plate 27.

[0040] In the present invention, the adjusting member 15 includes a travel groove 1501 provided on the rear end surface of the heating box 1, a vertical groove 1502 provided at one end of the travel groove 1501, and a wiping groove 1503 provided at one end of the vertical groove 1502. The wiping groove 1503 is connected to the travel groove 1501 through an inclined lower pressing groove 1504. When the cylinder 34 slides in the travel groove 1501, the transverse wiping plate 27 is located below the upper mold 25 and does not contact the transverse wiping plate 27. When the column 34 moves into the vertical groove 1502, under the action of the extrusion spring 31, the transverse wiping plate 27 contacts the side of the upper mold 25 to wipe and dry the side of the upper mold 25; then when the cylinder 34 moves in the wiping groove 1503, the transverse wiping plate 27 wipes and dries the bottom surface of the upper mold 25; finally, when the cylinder 34 moves in the lower pressure groove 1504, the transverse wiping plate 27 is reset, thereby separating the transverse wiping plate 27 from the upper mold 25.

[0041] In the present invention, the fixing part includes a bar magnet 33 arranged on the horizontal wiping plate 2 32, and a bar magnet 36 matching the bar magnet 33 is fixedly connected between the vertical wiping plates 21, and the outer end faces of the bar magnet 36 and the bar magnet 33 are both inclined surfaces, and an unlocking plate 22 acting on the horizontal wiping plate 2 32 is fixedly connected to the side of the heating box 1; and the adsorption force between the bar magnet 33 and the bar magnet 36 is greater than the force of the torsion spring shaft 30; the horizontal wiping plate 2 32 is kept in a horizontal state by the adsorption force between the bar magnet 33 and the bar magnet 36, so as to facilitate the resetting of the horizontal wiping plate 2 32; by using the unlocking plate 22, after the horizontal wiping plate 2 32 moves to the initial position, the bar magnet 33 and the bar magnet 2 36 are separated to reset the horizontal wiping plate 2 32, so as to facilitate wiping the upper mold 25 again.

[0042] In the present invention, the driving mechanism includes a slideway 6 symmetrically arranged on the top of the heating box 1, a strong magnet 8 slidably arranged in the slideway 6 and attracted to the strong magnet 26, and a reset spring 37 arranged in the slideway 6, so as to facilitate the reset of the strong magnet 8, thereby resetting the strong magnet 26, and further resetting the vertical wiping plate 21, the horizontal wiping plate 1 27 and the horizontal wiping plate 2 32; a winding wheel 3 is fixedly connected to the top of the short shaft 38, a pulley 4 is rotatably provided on the top surface of the heating box 1, a traction rope 11 is fixedly connected to the side of the strong magnet 8, and one end of the traction rope 11 passes through the pulley 4 and is fixed to the winding wheel 3, wherein, through the mutual cooperation of the slideway 16 and the slideway 2 16, the friction between the strong magnet 8 and the strong magnet 2 26 is reduced, thereby facilitating the sliding of the strong magnet 8 and the strong magnet 2 26.

[0043] In the present invention, positioning plates 20 are fixedly connected to the side and rear end faces of the lower mold 18, and a sliding sleeve 23 that cooperates with the positioning plate 20 is provided on the mounting plate 24. The use of the positioning plate 20 facilitates the positioning of the screen glass, thereby avoiding the phenomenon that one side of the screen glass is longer than the other side when the screen glass is placed on the lower mold 18, and ensuring that the distance between the screen glass and the periphery of the lower mold 18 is uniform, which is beneficial to the hot bending of the screen glass.

[0044] In the present invention, a slide rail 17 is symmetrically fixed on the inner bottom surface of the heating box 1, and a slider 19 matched with the slide rail 17 is fixed on the lower mold 18, so as to facilitate taking the lower mold 18 out of the heating box 1, thereby facilitating the removal of the screen glass.

[0045] Working principle: When the present invention is used, the screen glass to be bent is placed on the lower mold 18, so that the side and rear end of the screen glass are evenly in contact with the positioning plate 20 on the lower mold 18, so as to realize the positioning of the screen glass and ensure that the distance between the screen glass and the periphery of the lower mold 18 is the same; then the lower mold 18 is pushed into the heating box 1 and the slider 19 is moved to the rear end of the slide rail 17, and the door of the heating box 1 is closed; the screen glass is heated by the heat source in the heating box 1 to be bent;

[0046] Before die-casting the screen glass on the lower mold 18, the upper mold 25 needs to be dried. The specific operation is as follows:

[0047] The micro motor 7 is started to rotate the output shaft of the micro motor 7 in the positive direction, and the output shaft of the micro motor 7 rotates to drive the screw rod 5, thereby driving the rectangular thread sleeve 40 to rotate, wherein the initial position of the rectangular thread sleeve 40 is recorded as point A, the middle position is recorded as point B, and the end position is recorded as point C; and the rectangular thread sleeve 40 will drive the bar frame 42 to move when it moves, and the movement of the bar frame 42 is divided into two processes:

[0048] Process 1: When the rectangular threaded sleeve 40 moves from point A to point B, the movable block 43 moves synchronously with the bar frame 42 under the action of the extrusion spring 2 41, thereby driving the bar toothed plate 12 to move, thereby driving the gear 2 39 and the short shaft 38 to rotate, and further driving the winding wheel 3 to rotate, so that the traction rope 11 is wound around the winding wheel 3, thereby driving the strong magnet 1 8 to move, and through the mutual adsorption between the strong magnet 1 8 and the strong magnet 2 26, the strong magnet 2 26 moves with the strong magnet 1 8, and further drives the two vertical wiping plates 21 to move, so as to wipe the front and rear end surfaces of the upper mold 25;

[0049] The movement of the two vertical wiping plates 21 will drive the second horizontal wiping plate 32 to contact one side of the upper mold 25 first, so as to wipe and dry one side of the upper mold 25. As the vertical wiping plates 21 continue to move, the second horizontal wiping plate 32 will rotate and remain horizontal. When the second horizontal wiping plate 32 remains horizontal, the first bar magnet 33 and the second bar magnet 36 are attracted to each other, so as to fix the second horizontal wiping plate 32 and reset the second horizontal wiping plate 32.

[0050] When the transverse wiping plate 2 32 wipes the bottom of the upper mold 25, the cylinder 34 slides in the travel groove 1501. When the transverse wiping plate 2 32 finishes wiping the upper mold 25, the cylinder 34 moves into the vertical groove 1502, and then the transverse wiping plate 27 is lifted up under the action of the extrusion spring 1 31, so that the transverse wiping plate 27 contacts the other side of the upper mold 25, and the cylinder 34 moves into the wiping groove 1503; at this time, the rectangular threaded sleeve 40 moves to B; at this time, the strip tooth plate 12 contacts the limit plate 44 to ensure that the strip tooth plate 12 will not move;

[0051] Then, the output shaft of the micro motor 7 is controlled to rotate in the opposite direction, so that the traction rope 11 is released from the winding wheel 3, and then under the action of the reset spring 37, the strong magnet 1 8 is reset, so that the strong magnet 2 26 is reset, and then the transverse wiping plate 2 32 and the transverse wiping plate 1 27 are reset;

[0052] When the transverse wiping plate 27 is reset, it first contacts the other side of the upper mold 25, and then the transverse wiping plate 27 remains horizontal to wipe the bottom of the upper mold 25. When the cylinder 34 moves in the lower pressing groove 1504, the transverse wiping plate 27 moves downward to separate the transverse wiping plate 27 from the upper mold 25. Finally, under the action of the torsion spring shaft 30, the transverse wiping plate 27 remains in an inclined state.

[0053] When the cylinder 34 moves to the bottom of the lower pressing groove 1504, the transverse wiping plate 1 27 moves to the bottom, and at the same time, the bar magnet 1 33 and the bar magnet 2 36 are separated under the action of the unlocking plate 22, and then the transverse wiping plate 2 32 is tilted under the action of the torsion spring shaft 2 35;

[0054] Then repeat the above steps until the water marks on the upper mold 25 are dried;

[0055] Process 2: When the rectangular threaded sleeve 40 moves from point B to point C, the bar frame 42 continues to move while the bar toothed plate 12 does not move. At the same time, the bar toothed plate 14 contacts the gear 13, and then drives the gear 13 to rotate, thereby driving the threaded sleeve 2 to rotate, thereby driving the screw 2 10 to move downward, and further driving the mounting plate 24 and the upper mold 25 to move downward. When the rectangular threaded sleeve 40 moves to point C, the upper mold 25 and the lower mold 18 are molded together to achieve hot pressing of the screen glass.

[0056] Finally, control the micro motor 7 to reset each component. Finally, take out the bent screen glass. Note that do not place the bent screen glass in the vent or blow air directly on it.

[0057] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-positioning graphite mold for hot bending of screen glass, comprising a heating box (1), a lower mold (18) and an upper mold (25), characterized in that: A threaded sleeve (2) is rotatably provided in the middle of the top surface of the heating box (1), a screw rod (10) is connected to the inner thread of the threaded sleeve (2), and a mounting plate (24) is movably inserted into the bottom of the heating box (1) and rotatably provided therein, the upper mold (25) is mounted on the bottom of the mounting plate (24), a guide rod (9) is symmetrically provided on the top surface of the mounting plate (24), the bottom of the heating box (1) is slidably arranged with the lower mold (18), and a gear (13) is fixedly connected to the upper outer wall of the threaded sleeve (2); The heating box (1) is provided with a drying mechanism acting on the upper mold (25); a short shaft (38) is rotatably provided on the top of the heating box (1); a driving mechanism acting on the drying mechanism is provided on the top of the short shaft (38); a second gear (39) is fixedly connected to the outer wall of the bottom of the short shaft (38); The top surface of the heating box (1) is symmetrically provided with support plates, a screw rod (5) is rotatably provided between the support plates, a micro motor (7) is provided at one end of the screw rod (5), a rectangular threaded sleeve (40) is threadedly connected to the screw rod (5), and a transmission mechanism is provided on the rectangular threaded sleeve (40) that first acts on the gear wheel (39) and then acts on the gear wheel (13).

2. The self-positioning graphite mold for screen glass hot bending according to claim 1, characterized in that: The transmission mechanism comprises a strip frame (42) fixedly connected to one side of the rectangular threaded sleeve (40), a movable block (43) slidably arranged in the strip frame (42), and a second extrusion spring (41), wherein the second extrusion spring (41) is located at an end away from the micro motor (7), the movable block (43) is provided with a strip tooth plate (12) meshing with a second gear (39), a limit plate (44) fixedly connected to one side of the top surface of the heating box (1), and a strip tooth plate (14) matching with the first gear (13) is fixedly connected to the strip frame (42).

3. The self-positioning graphite mold for screen glass hot bending according to claim 2, characterized in that: The drying mechanism comprises a second slideway (16) symmetrically arranged on the top surface of the heating box (1), a second strong magnet (26) slidably arranged in the second slideway (16), and a vertical wiping plate (21) arranged at the bottom of the second strong magnet (26), a second transverse wiping plate (32) being rotatably arranged between the tops of the vertical wiping plates (21) via a second torsion spring shaft (35), and a fixing member being arranged on the second transverse wiping plate (32); A rectangular opening (28) is provided at the bottom of the vertical wiping plate (21), a sliding block (29) is slidably provided in the rectangular opening (28), a horizontal wiping plate (27) is rotatably provided between the sliding blocks (29) via a torsion spring shaft (30), a pressing spring (31) is provided between the sliding block (29) and the rectangular opening (28), a cylinder (34) is provided at the rear end of the torsion spring shaft (30), and an adjusting member (15) cooperating with the cylinder (34) is provided on the rear end surface of the heating box (1).

4. The self-positioning graphite mold for screen glass hot bending according to claim 3, characterized in that: The adjusting member (15) comprises a travel groove (1501) formed on the rear end surface of the heating box (1), a vertical groove (1502) formed at one end of the travel groove (1501), and a wiping groove (1503) formed at one end of the vertical groove (1502); the wiping groove (1503) is connected to the travel groove (1501) via an inclined downward pressing groove (1504).

5. The self-positioning graphite mold for screen glass hot bending according to claim 4, characterized in that: The fixing member comprises a bar magnet (33) arranged on a second transverse wiping plate (32), a bar magnet (36) matching the bar magnet (33) is fixedly connected between the vertical wiping plates (21), and the outer end surfaces of the bar magnet (36) and the bar magnet (33) are both inclined surfaces, and an unlocking plate (22) acting on the second transverse wiping plate (32) is fixedly connected to the side surface of the heating box (1).

6. The self-positioning graphite mold for screen glass hot bending according to claim 3, characterized in that: The driving mechanism comprises a slideway (6) symmetrically arranged on the top of the heating box (1), a strong magnet (8) slidably arranged in the slideway (6) and attracted to the strong magnet (26), and a return spring (37) arranged in the slideway (6); a winding wheel (3) is fixedly connected to the top of the short shaft (38); a pulley (4) is rotatably provided on the top surface of the heating box (1); a traction rope (11) is fixedly connected to the side of the strong magnet (8), and one end of the traction rope (11) passes through the pulley (4) and is fixedly connected to the winding wheel (3).

7. The self-positioning graphite mold for screen glass hot bending according to claim 1, characterized in that: Positioning plates (20) are fixedly connected to the side surface and rear end surface of the lower mold (18), and a sliding sleeve (23) that cooperates with the positioning plate (20) is provided on the mounting plate (24).

8. The self-positioning graphite mold for screen glass hot bending according to claim 1, characterized in that: Slide rails (17) are symmetrically fixedly connected to the inner bottom surface of the heating box (1), and a slide block (19) matching the slide rails (17) is fixedly connected to the lower mold (18).

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