An automotive glass hot bending and forming device

Abstract

The present invention relates to an automotive glass hot bending and forming device, which includes a lower heating chamber and an upper heating chamber. A sliding plate is slidably provided on the side wall of the upper heating chamber. An anti-disengagement plate is provided at the end of the sliding plate. A rotating shaft clamping plate is hinged inside the anti-disengagement plate. A notch is provided on the rotating shaft clamping plate. A first cold sealing plate moves up and down inside the upper heating chamber. The side wall of the first cold sealing plate is in contact with the side wall of the upper heating chamber. A second cold sealing plate aligned with its inner side wall is provided at the lower end of the first cold sealing plate. The side wall of the second cold sealing plate is in contact with the end of the rotating shaft clamping plate. The lower heating chamber and the upper heating chamber of the present invention are divided into two upper and lower closed spaces by the automotive glass, the first cold sealing plate, the second cold sealing plate and the sliding plate. After high-pressure gas is introduced, the high-pressure gas can apply uniform pressure to the upper surface of the automotive glass, improving the uniformity of the surface forming of the automotive glass.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive glass, and specifically refers to an automotive glass hot bending and forming device. Background Art

[0002] Hot bending and forming is a common process in automotive glass production. Its principle is to utilize the property that glass softens at high temperatures, causing it to collapse onto a mold under its own gravity or external pressure to obtain a set shape.

[0003] The shapes of common automotive glasses are mostly arc-shaped. Before manufacturing, asbestos paper with a certain thickness needs to be laid on a circular roller mold arranged in a set arc to reduce the marks left at the contact position of the lower wall of the glass. However, asbestos paper cannot be laid under the circular roller that is in direct contact with the upper wall of the glass, resulting in poor forming effect of the upper wall of the glass. Moreover, the arcs of glasses with different specifications are different, and different circular roller toolings need to be configured when setting glasses with different arc shapes. Summary of the Invention

[0004] In view of the above situation, to overcome the defects of the prior art, the present invention provides an automotive glass hot bending and forming device, which at least partially solves the above problems.

[0005] The technical solution adopted by the present invention is as follows: An automotive glass hot bending and forming device proposed by the present invention includes a lower heating chamber. An automotive glass is placed in the lower heating chamber, and high-temperature heating resistance wires are provided in the lower heating chamber. An upper heating chamber capable of moving up and down is provided on the lower heating chamber, and high-temperature resistance wires are also provided in the upper heating chamber.

[0006] Further, the upper heating chamber can be buckled to the upper wall of the lower heating chamber, so that a sealed space is formed inside the lower heating chamber and the upper heating chamber.

[0007] Further, sliding grooves are symmetrically provided on the side walls of the upper heating chamber. Sliding plates are slidably provided in the sliding grooves on the side walls of the upper heating chamber. The sliding plates are symmetrically arranged on both sides of the upper heating chamber. Anti-detachment plates are provided at the ends of the sliding plates. The automotive glass is connected to the anti-detachment plates, and the thickness of the anti-detachment plates is greater than the height of the sliding grooves.

[0008] Further, in order to adapt to the change in the angle after the automotive glass is bent, a rotating shaft clamp is hinged inside the anti-detachment plate, and a notch is provided on the rotating shaft clamp.

[0009] Further, longitudinal flanges are arrayed at the outer ends of the sliding plates, and first springs are connected between the longitudinal flanges and the side walls of the upper heating chamber.

[0010] Furthermore, closed cylinders are symmetrically provided on the upper wall of the upper heating chamber. A first cold sealing plate is provided on the telescopic end of the closed cylinder. Cold air can be communicated inside the first cold sealing plate. The telescopic end of the closed cylinder penetrates through the upper heating chamber, enabling the first cold sealing plate to move up and down inside the upper heating chamber. The side wall of the first cold sealing plate fits against the side wall of the upper heating chamber. A second cold sealing plate aligned with its inner side wall is provided at the lower end of the first cold sealing plate. Cold air can also be communicated inside the second cold sealing plate. The side wall of the second cold sealing plate fits against the end of the rotating shaft clamping plate.

[0011] Furthermore, negative pressure holes are provided on the side wall of the lower heating chamber, and positive pressure holes capable of communicating with high-pressure gas are provided on the upper wall of the upper heating chamber.

[0012] Furthermore, to facilitate the placement of the automotive glass and enable the upper heating chamber to move upward to a state of separation from the lower heating chamber, lifting flanges are symmetrically provided on the side walls of the upper heating chamber, and lifting cylinders are symmetrically provided on the side walls of the lower heating chamber. The telescopic ends of the lifting cylinders are provided on the lifting flanges.

[0013] Furthermore, to define the bending profile of the automotive glass, side doors are symmetrically provided on both sides of the lower heating chamber. Lifting chambers arranged in a linear array are symmetrically provided inside the lower heating chamber. Arc adjustment rods are slidably provided inside the lifting chambers. Fixing bolts capable of fixing the arc adjustment rods are provided through the upper ends of the side walls of the lifting chambers. Round rollers are rotatably provided at the tops of the arc adjustment rods.

[0014] Furthermore, ear rings are provided at the tops of the arc adjustment rods, and the round rollers are rotatably provided at the centers of the ear rings. The radius of the ear rings is the same as the radius of the round rollers.

[0015] Furthermore, to increase the speed of adjusting the positions of each round roller and avoid adjusting and measuring the height of the round rollers on each arc adjustment rod individually, a second spring is connected between the arc adjustment rod and the lifting chamber. Positioning rollers are provided on the outer side walls of the arc adjustment rods. The positioning rollers protrude outside the ear rings on the arc adjustment rods, and the outermost edge positions of the positioning rollers are aligned with the middle of the lower end of the second cold sealing plate.

[0016] The beneficial effects achieved by the present invention are as follows:

[0017] 1. The lower heating chamber and the upper heating chamber are divided into two upper and lower closed spaces by the automotive glass, the first cold sealing plate, the second cold sealing plate, and the sliding plate. After high-pressure gas is introduced into the positive pressure holes, the high-pressure gas can apply a uniform pressure to the upper surface of the automotive glass, improving the uniformity of the surface forming of the automotive glass;

[0018] 2. The arc adjustment rods in the lifting bin can slide up and down and be arranged and combined into different shapes to adapt to the production of automotive glass of different models and specifications. The positioning rollers are in contact and cooperation with the second cold sealing plate, and can directly press all the arc adjustment rods to the set height without separately adjusting and measuring the height of each arc adjustment rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0020] Figure 2 is Figure 1 the cross-section of Figure 1 ;

[0021] Figure 3 is Figure 1 the exploded view of

[0022] Figure 4 is Figure 1 the cross-section of Figure 2 ;

[0023] Figure 5 is the positional relationship diagram of the rotating shaft clamping plate and the sliding plate;

[0024] Figure 6 is the partial cross-sectional view of each component in the lower heating bin;

[0025] Figure 7 is Figure 6 the enlarged view of part I in

[0026] Among them, 1. Lower heating bin, 2. Upper heating bin, 3. Negative pressure hole, 4. Positive pressure hole, 5. Lifting cylinder, 6. Sealing cylinder, 7. Lifting flange, 8. First cold sealing plate, 9. Second cold sealing plate, 10. Sliding plate, 11. First spring, 12. Rotating shaft clamping plate, 13. Longitudinal flange, 14. Side opening door, 15. Anti-detachment plate, 16. Notch, 17. Slide groove, 18. Lifting bin, 19. Arc adjustment rod, 20. Second spring, 21. Fixed bolt, 22. Earring, 23. Round roller, 24. Positioning roller.

[0027] In the above drawings, a represents automotive glass.

[0028] The drawings are used to provide further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0031] As Figure 1 - Figure 2 shown, a hot bending forming device for automotive glass a proposed in an embodiment of the present invention includes a lower heating chamber 1. An automotive glass a is placed in the lower heating chamber 1. In the initial state, the automotive glass a is in a flat state to be bent into an arc. There are high-temperature heating resistance wires in the lower heating chamber 1, and the high-temperature heating resistance wires can raise the temperature in the lower heating chamber 1 to the temperature at which the automotive glass a softens. An upper heating chamber 2 capable of moving up and down is provided on the lower heating chamber 1. There are also high-temperature resistance wires in the upper heating chamber 2, and the temperature inside the upper heating chamber 2 can also be adjusted and increased.

[0032] As Figure 4 shown, the upper heating chamber 2 can be buckled to the upper wall of the lower heating chamber 1, so that a sealed space is formed inside the lower heating chamber 1 and the upper heating chamber 2.

[0033] As Figure 3 - Figure 5 shown, sliding grooves 17 are symmetrically provided on the side walls of the upper heating chamber 2. Sliding plates 10 are slidably arranged in the sliding grooves 17 on the side walls of the upper heating chamber 2. The sliding plates 10 are symmetrically arranged on both sides of the upper heating chamber 2. Anti-disengagement plates 15 are provided at the ends of the sliding plates 10. The automotive glass a is connected to the anti-disengagement plates 15. The thickness of the anti-disengagement plates 15 is greater than the height of the sliding grooves 17, and the anti-disengagement plates 15 can prevent the sliding plates 10 from disengaging from the sliding grooves 17.

[0034] In order to adapt to the change in the angle after the automotive glass a is bent, a rotating shaft clamping plate 12 is hinged inside the anti-disengagement plate 15. A notch 16 is opened on the rotating shaft clamping plate 12. Both sides of the automotive glass a are clamped by the notches 16 on both sides. It should be noted that the clamped side should be the side of the automotive glass a that does not deform. When the automotive glass a is bent, the clamped side of the automotive glass a will drive the rotating shaft clamping plate 12 to rotate a certain angle to adapt to the change generated by the bending of the automotive glass a.

[0035] When the automotive glass is bent in an a-shaped curve, both sides of the automotive glass a move towards each other simultaneously, causing the two sides of the automotive glass a to contract inward. To adapt to the changes that occur when the automotive glass a contracts in real time, longitudinal flanges 13 are arrayed at the outer ends of the sliding plate 10. A first spring 11 is connected between the longitudinal flange 13 and the side wall of the upper heating chamber 2. The first spring 11 always pushes the sliding plate 10 outward. After the automotive glass a contracts, the automotive glass a will exert a pulling force on the sliding plate 10 that overcomes the first spring 11, causing the sliding plate 10 to contract inward.

[0036] As Figure 2 - Figure 4 shown, sealing cylinders 6 are symmetrically provided on the upper wall of the upper heating chamber 2. A first cold sealing plate 8 is provided at the telescopic end of the sealing cylinder 6. Cold air can be communicated inside the first cold sealing plate 8. The telescopic end of the sealing cylinder 6 penetrates through the upper heating chamber 2, enabling the first cold sealing plate 8 to move up and down inside the upper heating chamber 2. The side wall of the first cold sealing plate 8 is attached to the side wall of the upper heating chamber 2. A second cold sealing plate 9 aligned with its inner side wall is provided at the lower end of the first cold sealing plate 8. Cold air can also be communicated inside the second cold sealing plate 9. The second cold sealing plate 9 can be detached from the first cold sealing plate 8 for replacement. The arc shape of the second cold sealing plate 9 is adapted to the bending arc of the automotive glass a and can be replaced according to needs during production. The side wall of the second cold sealing plate 9 is attached to the end of the rotating shaft clamping plate 12. During production, the edges of the first cold sealing plate 8 and the second cold sealing plate 9 are attached to the edges of the bent side of the automotive glass a.

[0037] Negative pressure holes 3 are provided on the side wall of the lower heating chamber 1, and positive pressure holes 4 capable of communicating with high-pressure gas are provided on the upper wall of the upper heating chamber 2. Under the action of the first cold sealing plate 8, the second cold sealing plate 9, and the sliding plate 10, the automotive glass a divides the closed space formed by the upper heating chamber 2 and the lower heating chamber 1 being buckled together into upper and lower parts, making the upper and lower walls of the automotive glass a in different spaces. And in order to ensure the sealing property of the deformed edges of the automotive glass a during bending, the cold air introduced into the first cold sealing plate 8 and the second cold sealing plate 9 will cause the edges of the automotive glass a in a high-temperature molten state to condense. This can not only enable the edges of the automotive glass a to smoothly slide and contract during deformation but also ensure the sealing property of the edges of the automotive glass a, preventing the gas communication between the upper and lower surfaces of the automotive glass a. When sucking air outward from the negative pressure hole 3, the air pressure in the lower heating chamber 1 decreases, and when introducing high-pressure gas from the positive pressure hole 4, the air pressure in the upper heating chamber 2 increases. That is, the upper wall of the automotive glass a is subjected to a uniform downward high pressure, and the lower wall of the automotive glass a is subjected to a uniform downward low pressure. Under the combined action of the pressures on the upper and lower sides, the automotive glass a is gradually bent by the air pressure to the set shape.

[0038] As Figure 1 shown, to facilitate the placement of the automotive glass a and enable the upper heating chamber 2 to move upward to a separated state from the lower heating chamber 1, lifting flanges 7 are symmetrically provided on the side walls of the upper heating chamber 2, and lifting cylinders 5 are symmetrically provided on the side walls of the lower heating chamber 1. The telescopic ends of the lifting cylinders 5 are provided on the lifting flanges 7.

[0039] As shown Figure 1 in the figure, in order to define the curved contour of the automotive glass a, side doors 14 are symmetrically arranged on both sides of the lower heating chamber 1. Linear-array arranged lifting chambers 18 are symmetrically arranged in the lower heating chamber 1. An arc adjustment rod 19 is slidably arranged in the lifting chamber 18. A fixing bolt 21 capable of fixing the arc adjustment rod 19 penetrates through the upper end of the side wall of the lifting chamber 18. Under the action of the fixing bolt 21, the arc adjustment rod 19 can freely adjust its height and be fixed at the required position. A round roller 23 is rotatably arranged at the top end of the arc adjustment rod 19. After the side door 14 is opened, the position parameters of the components in the lifting chamber 18 can be adjusted. The common shape of the automotive glass a is arc-shaped. Therefore, the round rollers 23 on the arc adjustment rod 19 need to be adjusted to an arc shape in sequence. Refer to Figure 4 and Figure 6 shown in the figure. At this time, each arc adjustment rod 19 in the lifting chamber 18 can be lifted upwards in sequence, so that the round rollers 23 on each arc adjustment rod 19 are arranged into a set arc radius. Then, lay a layer of asbestos paper on the round rollers 23, and the bending operation can be carried out.

[0040] An earring 22 is arranged at the top end of the arc adjustment rod 19, and the round roller 23 is rotatably arranged at the center of the earring 22. In order to avoid the earring 22 affecting the forming of the automotive glass a and causing linear marks on the surface of the automotive glass a, the radius of the earring 22 is the same as the radius of the round roller 23.

[0041] As shown Figure 2 and Figure 7 in the figure, in order to improve the speed of adjusting the positions of the round rollers 23 and avoid adjusting and measuring the height of the round rollers 23 on each arc adjustment rod 19 individually, a second spring 20 is connected between the arc adjustment rod 19 and the lifting chamber 18. The second spring 20 always pushes the arc adjustment rod 19 upwards to the highest position. A positioning roller 24 is arranged on the outer side wall of the arc adjustment rod 19. The positioning roller 24 protrudes outwards from the earring 22 on the arc adjustment rod 19. The outermost edge position of the positioning roller 24 is aligned with the middle part of the lower end of the second cold sealing plate 9. In the initial state, all the arc adjustment rods 19 are pushed up to the highest position by the second spring 20. At this time, the adjustment of all the round rollers 23 can be completed at one time by using the second cold sealing plate 9. During operation, move the second cold sealing plate 9 downwards so that the outer contour of the second cold sealing plate 9 fits the outer side wall of the positioning roller 24. The second cold sealing plate 9 applies a downward pressure on the positioning roller 24. The positioning roller 24 drives the arc adjustment rod 19 to compress the second spring 20 and move downwards, so that the earrings 22 of all the arc adjustment rods 19 are attached to the lower wall contour of the second cold sealing plate 9. All the arc adjustment rods 19 have successfully completed the profiling of the second cold sealing plate 9 and reached a position adapted to the second cold sealing plate 9. Then, fix the arc adjustment rod 19 through the fixing bolt 21. At this time, the one-time adjustment of all the round rollers 23 is completed.

[0042] During specific operation, the upper heating chamber 2 is separated from the lower heating chamber 1 through the lifting cylinder 5, the side opening door 14 is opened, a second cold sealing plate 9 mold that fits is selected, and the second cold sealing plate 9 is installed at the lower end of the first cold sealing plate 8.

[0043] The closing cylinder 6 extends downward. The closing cylinder 6 drives the first cold sealing plate 8 and the second cold sealing plate 9 to move downward, so that the second cold sealing plate 9 presses against the positioning rollers 24. All the positioning rollers 24 sequentially contact the lower wall contour of the second cold sealing plate 9. The positioning rollers 24 are pressed and drive the arc adjusting rods 19 to compress the second spring 20 and move downward.

[0044] At this time, the round rollers 23 on all the arc adjusting rods 19 are sequentially arranged into a shape adapted to the contour of the second cold sealing plate 9, completing the profiling of the second cold sealing plate 9. Then, the arc adjusting rods 19 are fixed through the fixing bolts 21, and a layer of asbestos paper is laid on the round rollers 23, and then the bending operation can be started.

[0045] The flat automotive glass a is placed in the lower heating chamber 1, so that the two side edges of the automotive glass a are respectively clamped by the notches 16, and the remaining side edges of the automotive glass a are flush with the ends of the rotating shaft clamping plates 12 respectively. Then, the upper heating chamber 2 is lowered, and at the same time, the lower heating chamber 1 and the upper heating chamber 2 are heated. When the temperature reaches, it is maintained for a certain time, and high-pressure gas is respectively introduced into the positive pressure holes 4, and gas is extracted from the negative pressure holes 3.

[0046] At this time, the upper wall of the automotive glass a is uniformly and downwardly pressured. Under the action of the pressure, the automotive glass a gently collapses onto the asbestos paper on the round rollers 23 until the lower wall of the automotive glass a is completely attached to the asbestos paper.

[0047] During the bending process of the automotive glass a, the automotive glass a will drive the rotating shaft clamping plates 12 on both sides to rotate a certain angle, and at the same time pull the rotating shaft clamping plates 12 towards the center to adapt to the change of the automotive glass a. The sliding plate 10 will overcome the thrust of the first spring 11 and slowly and continuously move towards the upper heating chamber 2 until the automotive glass a is completely shaped.

[0048] When the automotive glass a is shaped and cooled, the sliding plate 10 stops moving, jacks up the upper heating chamber 2, and pushes out the automotive glass a along the notches 16 towards the outside. The sliding plate 10 will return to the initial state under the action of the first spring 11, waiting for the bending operation of the next piece of glass.

[0049] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0050] The above describes the present invention and its embodiments. Such description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural modes and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. An automobile glass hot bending and forming device, characterized in that, Comprising: A lower heating chamber (1) for placing glass, and a negative pressure hole (3) is provided on the side wall of the lower heating chamber (1); An upper heating chamber (2) capable of being buckled on the upper wall of the lower heating chamber (1), and a positive pressure hole (4) capable of connecting high-pressure gas is provided on the upper wall of the upper heating chamber (2); Sliding plates (10) symmetrically slide on the side walls of the upper heating chamber (2). An anti-disengagement plate (15) is provided at the end of the sliding plate (10). A rotating shaft clamping plate (12) is hinged inside the anti-disengagement plate (15). A notch (16) is formed on the rotating shaft clamping plate (12), and the notch (16) is used for clamping and fixing the side edge of an automotive glass; First cold sealing plates (8) are arranged in pairs in the upper heating chamber (2) and can move up and down. The side walls of the first cold sealing plates (8) are attached to the side walls of the upper heating chamber. A second cold sealing plate (9) aligned with the inner side wall is provided at the lower end of the first cold sealing plate (8), and the side wall of the second cold sealing plate (9) is attached to the end of the rotating shaft clamping plate (12).

2. The automotive glass hot bending and forming device according to claim 1, wherein: Lifting flanges (7) are symmetrically provided on the side walls of the upper heating chamber (2), and lifting cylinders (5) are symmetrically provided on the side walls of the lower heating chamber (1). The telescopic ends of the lifting cylinders (5) are arranged on the lifting flanges (7).

3. The automotive glass hot bending and forming device according to claim 1, characterized in that: Sealing cylinders (6) are symmetrically provided on the upper wall of the upper heating chamber (2), and the telescopic ends of the sealing cylinders (6) penetrate through the upper heating chamber (2) and are arranged on the first cold sealing plates (8).

4. The automotive glass hot bending and forming device according to claim 1, wherein: Longitudinal flanges (13) are arrayed at the outer ends of the sliding plates (10). A first spring (11) is connected between the longitudinal flanges (13) and the side walls of the upper heating chamber (2). Sliding grooves (17) are symmetrically provided on the side walls of the upper heating chamber (2), and the sliding plates (10) slide in the sliding grooves (17). The thickness of the anti-disengagement plate (15) is greater than the height of the sliding grooves (17).

5. The automotive glass hot bending forming device according to claim 1, characterized in that: Side doors (14) are symmetrically provided on both sides of the lower heating chamber (1). Lifting chambers (18) arranged in a linear array are symmetrically provided inside the lower heating chamber (1). An arc adjusting rod (19) slides in the lifting chamber (18). A round roller (23) is rotatably provided at the top end of the arc adjusting rod (19). A fixing bolt (21) capable of fixing the arc adjusting rod (19) penetrates through the upper end of the side wall of the lifting chamber (18).

6. The automotive glass hot bending and forming device according to claim 5, characterized in that: A second spring (20) is connected between the arc adjusting rod (19) and the lifting chamber (18).

7. The automotive glass hot bending and forming device according to claim 6, characterized in that: An earring (22) is provided at the top end of the arc adjusting rod (19), and the radius of the earring (22) is the same as the radius of the round roller (23).

8. The automotive glass hot bending forming device according to claim 7, wherein: A positioning roller (24) is provided on the outer side wall of the arc adjusting rod (19).

9. The automotive glass hot bending and forming device according to claim 8, wherein: The positioning roller (24) protrudes outside the earring (22) on the arc adjusting rod (19), and the outermost edge position of the positioning roller (24) is aligned with the middle of the lower end of the second cold sealing plate (9).

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