CN113955925A - Hot bending structure, hot bending method and hot bending machine - Google Patents

Abstract

The disclosure relates to a hot bending structure, a hot bending method and a hot bending machine. The hot bending structure comprises a punch (1) and a flexible part (2), wherein the flexible part (2) is configured in a tensioning state, the punch (1) is provided with a forming arc surface (11), at least one of the flexible part (2) and the punch (1) can move relative to the other, so that the flexible part (2) and the punch (1) can press glass (20), and the glass (20) can be bent to be attached to the forming arc surface (11). The hot bending structure is simple in structure, and is beneficial to reducing cost, improving production efficiency and improving product yield.

Description

Hot bending structure, hot bending method and hot bending machine

Technical Field

The disclosure relates to the technical field of glass processing equipment, in particular to a hot bending structure, a hot bending method and a hot bending machine.

Background

With the increasing development demands of industries such as smart phones, smart televisions and vehicle-mounted novel integrated central control display technologies, the curved screen display technology has frequent appearance and attractive appearance, so that the market demand is more and more extensive. The 3D curved glass required by the curved screen is used as the most critical part of the curved display technology, and the requirements on the production technology are higher and higher.

The existing 3D curved glass is difficult to bend in a hot mode, the method is complex, and the production efficiency is low. At present, hot bending is generally formed by oppositely pressing an upper die and a lower die, the shape of the die is complex, and the development cost is higher.

Disclosure of Invention

The purpose of the present disclosure is to provide a hot bending structure, a hot bending method, and a hot bending machine, which are simple in structure, beneficial to reducing cost, and beneficial to improving product yield.

In order to achieve the above object, the present disclosure provides a hot bending structure including a male die and a flexible member, the flexible member being configured in a tensioned state, the male die having a forming arc, at least one of the flexible member and the male die being driven to be movable relative to the other so that the flexible member and the male die can press glass, thereby being capable of press-bending the glass to fit on the forming arc.

Optionally, the hot bending structure further comprises a heating device for heating the flexible member.

Optionally, the arc length of the forming arc surface is greater than the length of the to-be-bent section of the glass, and the length of the flexible piece is not less than the arc length of the forming arc surface.

Optionally, the hot bending structure further comprises a tensioning mechanism for providing a tensioning force to the flexible member to keep the flexible member in a tensioned state, the tensioning mechanism comprising a tensioning shaft for tensioning the flexible member.

Optionally, straining mechanism still includes first guide arm, first connecting rod, second connecting rod, first elastic component and second elastic component, the tensioning axle includes first tensioning axle and second tensioning axle, first tensioning axle and second tensioning axle are connected respectively the length direction's of flexible piece both ends, the one end of first connecting rod articulate in first guide arm and the other end connect in first tensioning axle, the one end of second connecting rod articulate in first guide arm and the other end connect in second tensioning axle, first elastic component cover is established on the first connecting rod and one end support the top first tensioning epaxially, the second elastic component cover is established on the second connecting rod and one end support the top second tensioning epaxially, at initial state, first elastic component with the second elastic component is compression state.

Optionally, the hot bending structure further comprises a driving mechanism, and the driving mechanism comprises a first driving mechanism for driving the flexible member to move towards a direction close to or away from the male die.

Optionally, the hot bending structure further comprises a driving mechanism, and the driving mechanism comprises a second driving mechanism for driving the male die to move towards a direction close to or away from the flexible part.

According to another aspect of the present disclosure, there is provided a hot bending method applied to the above hot bending structure, the method including:

s1: heating the glass to be bent to a preset temperature, then placing the glass on a forming arc surface of the male die, or the flexible piece, or a position between the forming surface and the flexible piece, and configuring the flexible piece in a tensioning state;

s2: driving at least one of the flexible piece and the male die to move towards the direction close to the other to press the glass until the glass is bent to be attached to the forming cambered surface of the male die;

s3: at least one of the flexible member and the male mold is driven to move away from the other, and the glass is removed.

Optionally, in S1, the temperature of the flexible member is heated to a preset temperature.

According to another aspect of the disclosure, a hot bending machine is provided, which includes a first temperature control assembly for heating or cooling the glass, a second temperature control assembly for heating or cooling the male mold, and the hot bending structure.

Through above-mentioned technical scheme, in the curved structure of heat that this disclosure provided, and adopt the flexible piece to replace the die, the curved mould of heat only needs to adopt a terrace die, and the terrace die can realize the curved cladding forming of heat to glass with the cooperation of flexible piece, compares in prior art and adopts terrace die and die complex technical scheme, and the curved structure of heat of this disclosure can reduce a die, has reduced interior cambered surface processing, can reduce the processing degree of difficulty and reduce the mould cost. The precision of the curved glass can be ensured only by controlling the precision of the male die, the precision deviation of the curved glass caused by poor matching of the male die and the female die 1 is reduced, and the improvement of the yield of product forming is facilitated. In addition, the heating mould avoids heating the female mould, which is beneficial to improving the heating efficiency and the production efficiency and reducing the heat loss. In addition, only one surface of the glass is in contact with the die, and compared with the female die, the flexible part is easy to clean and replace, so that the probability of defect generation is reduced, the subsequent grinding process and workload can be reduced, the production efficiency is improved, and the product yield is improved.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic structural view of a thermally curved structure according to an embodiment of the present disclosure, wherein a glass is shown, the glass being in an unbent state, and arrows show directions of tension;

FIG. 2 is a schematic structural view of a hot bend configuration according to an embodiment of the present disclosure, wherein the glass and heating device are shown, the glass being in an unbent state;

FIG. 3 is a schematic structural view of a hot bend configuration according to an embodiment of the present disclosure, wherein the glass is shown in a bent state and the arrows show the direction of tension;

FIG. 4 is a schematic structural view of a hot bend configuration according to an embodiment of the present disclosure, wherein the first elastic member, the second elastic member, etc. of the tensioning mechanism are shown;

FIG. 5 is a schematic structural view of a hot bender according to another embodiment of the present disclosure;

fig. 6 is a schematic front cross-sectional view of a hot bender according to an embodiment of the present disclosure.

Description of the reference numerals

100-hot bending machine; 10-hot bending structure; 1-male die; 11-forming a cambered surface; 12-a second guide bar; 2-a flexible member; 21-heating means 21; 3-a tensioning mechanism; 31-tensioning shaft; 311-a first tensioning shaft; 312-a second tensioning shaft; 32-a first guide bar; 33-a first link; 34-a second link; 35-a first elastic member; 36-a second elastic member; 37-a slide block; 41-a first drive mechanism; 42-a second drive mechanism; 20-glass; 50-a first temperature control assembly; 51-an upstream temperature control assembly; 52-downstream temperature control assembly; 60-a second temperature control assembly; 71-a heating unit; 72-a cooling unit; 80-a forming furnace; 90-a frame; 110-a feeding mechanism; 120-a discharge mechanism; 130-a robot arm; 140-compartment plate; l1 — length of the section of glass to be bent; l2 — length of flexure; s-arc length of the forming arc 11.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, the use of directional terms such as "upper and lower" is generally defined based on the drawing direction of the drawings, and "inner and outer" refer to the inner and outer of the relevant parts. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated.

As shown in fig. 1 to 5, the present disclosure provides a hot bending structure 10, where the hot bending structure 10 includes a male die 1 and a flexible part 2, the flexible part 2 is configured in a tensioned state, the male die 1 has a forming arc 11, and at least one of the flexible part 2 and the male die 1 is movable relative to the other so that the flexible part 2 and the male die 1 can press a glass 20, so that the glass 20 can be press-bent to fit on the forming arc 11. Wherein optionally the flexible member 2 can be bent synchronously with the glass 20 under the influence of an external force.

Through the technical scheme, in the hot-bending structure 10 provided by the disclosure, the flexible part 2 is adopted to replace a female die, the hot-bending die only needs to adopt one male die 1, the male die 1 is matched with the flexible part 2 to realize hot-bending cladding forming of the glass 20, and compared with the technical scheme that the male die 1 is matched with the female die in the prior art, the hot-bending structure 10 disclosed by the disclosure can reduce one female die, the processing of an inner arc surface is reduced, the processing difficulty can be reduced, and the die cost can be reduced. The precision of the curved glass 20 can be ensured only by controlling the precision of the male die 1, the precision deviation of the curved glass 20 caused by poor matching of the male die and the female die 1 is reduced, and the improvement of the yield of product forming is facilitated. In addition, the heating mould avoids heating the female mould, which is beneficial to improving the heating efficiency and the production efficiency and reducing the heat loss. In addition, only one surface of the glass 20 is in contact with the die, and compared with the female die, the flexible part 2 is easy to clean and replace, so that the probability of defect generation is reduced, the subsequent grinding process and workload can be reduced, the production efficiency is improved, and the product yield is improved.

When hot bending forming is carried out, firstly, the glass 20 and the male die 1 can be heated to a preset temperature; the glass 20 to be hot bent is then placed on the male mold 1 or the flexible element 2, wherein the flexible element 2 can be placed under tension, for example, by a tensioning mechanism 3 (see below). For example, referring to fig. 1 and 3, in this embodiment, the flexible member 2 is unfolded to a horizontal state under the tension; when at least one of the punch 1 and the flexible member 2 is moved toward the approach of the other under the action of a driving mechanism or manual operation, the flexible member 2 is first brought into full contact with the glass 20. Then the flexible part 2 is continuously close to the punch 1, so that the glass 20 firstly starts to be subjected to hot bending deformation at the contact position of the glass 20 and the punch 1 under the extrusion action of the punch 1 and the flexible part 2. With the continuous moving process, the glass 20 is gradually contacted with the convex die 1, and finally the surface of the convex die 1 is completely covered by the flexible part 2, so that the curved glass 20 can be obtained, namely, the 2D glass 20 is thermally bent into the 3D glass 20.

During the hot bending process, since the flexible member 2 bends along with the glass 20 and the flexible member 2 is in a state of keeping tension, as shown in fig. 1 and 3, the flexible member 2 applies continuous and stable pressure to the glass 20 during the process of pressing the glass 20, the pressure only acts on the tangent point a of the glass 20 and the punch 1, and the tangent point a gradually moves along with the deformation of the glass 20 until the glass 20 is completely attached to the punch 1. The glass 20 outside the tangent point a is in contact with the flexible member 2, but is in a free, zero-pressure state.

In the present disclosure, the glass 20 and the punch 1, particularly the punch 1, may be heated by an external heating mechanism, or may be heated by a heating mechanism integrated with the hot-bending structure 10 itself, for example, the heating mechanism is integrated with the punch 1. The present disclosure is not limited thereto.

In the present disclosure, the flexible material 2 may be attached to the tension mechanism 3, or both ends of the flexible material 2 in the longitudinal direction may be fixed to place the flexible material 2 in a tensioned state without separately providing the tension mechanism 3.

The specific shape of the forming arc surface 11 is not limited in the present disclosure, and may be determined according to the curved surface requirement of the glass 20. For example, the arc shape can be designed into a single arc shape, multiple arc shapes, a spherical shape, a multiple curved surface shape, and the like.

In addition, in order to reduce the weight of the die, reduce the heat capacity, improve the heating rate and efficiency and reduce the energy waste, the inner part of the male die 1 can be designed to be hollowed, the inner part of the hollowed male die 1 is a cavity, and the wall thickness of the periphery of the male die 1 can be properly selected according to the strength of the die material.

The present disclosure does not limit the specific material of the flexible member 2, and alternatively, the flexible member 2 may be made of a metal thin plate, a metal wire net, a heat-resistant fiber cloth, a high-temperature-resistant material tape, a high-temperature-resistant material woven tape, or the like. As long as the flexible member 2 can be bent by an external force and can be restored to the original state after being cancelled.

In one embodiment of the present disclosure, the hot bending structure 10 further includes a heating device 21 for heating the flexible member 2. Based on this, referring to fig. 2, since the pressing mold device can heat the lower surface of the glass 20, the heating device 21 is adopted to heat the flexible member 2 and further heat the upper surface of the glass 20, so that the upper and lower surfaces of the glass 20 can be heated synchronously, and the quality defect that the shaping quality of the glass 20 is unstable due to the asynchronous temperature of the two surfaces of the glass 20 is avoided.

In an embodiment of the present disclosure, the heating device 21 can be attached to the flexible member 2 and can be synchronously bent along with the glass 20, so that the heating device 21 directly heats the flexible member 2, and the heating is stable and effective.

Specifically, the heating device 21 may be a heating wire. The heater strip is directly laminated on the surface of the flexible part 2, and after the power is switched on, the heater strip generates heat and directly conducts the heat to the flexible part 2.

In another embodiment of the present disclosure, the heating device 21 may have a gap with the flexible member 2, and during the overmolding process, the heating device 21 is electrically heated, and the flexible member 2 is heated by heat radiation and convection heat of ambient air.

Further, the heating device 21 is constructed in a bendable structure and is bent synchronously with the glass 20, and the distance from the flexible member 2 is kept substantially constant during the over-molding process.

As shown in fig. 1, in an embodiment of the present disclosure, the arc length S of the forming arc surface 11 is greater than the length L1 of the section to be bent of the glass 20, and the length L2 of the flexible member 2 is not less than the arc length S of the forming arc surface 11, so as to ensure that the flexible member 2 can completely wrap the glass 20 around the forming arc surface 11 of the convex mold 1, so that the glass 20 can be kept according to the forming arc surface 11 of the convex mold 1, and an ideal curved glass 20 can be obtained.

It should be noted that the glass 20 shown in the drawing (see fig. 3) needs to be bent as a whole, so that the length of the glass 20 is equal to the length L1 of the to-be-bent segment of the glass 20. In other embodiments, when the glass 20 only needs to be bent partially, that is, when the formed glass 20 has a flat section, the length of the glass 20 is greater than the length L1 of the section to be bent of the glass 20, and at this time, the arc length S of the forming arc 11 only needs to be greater than the length L1 of the section to be bent of the glass 20.

In the present disclosure, the hot bending structure 10 may further include a tensioning mechanism 3, and the tensioning mechanism 3 is used for providing a tensioning force to the flexible member 2 to keep the flexible member 2 in a tensioned state.

The present disclosure does not limit the specific structure of the tension mechanism 3. As shown in fig. 1 and 2, in one embodiment of the present disclosure, the tensioning mechanism 3 includes a tensioning shaft 31 for tensioning the flexible member 2. In particular, when the flexible member 2 is tensioned, the tensioning shaft 31 can be wound on the flexible member 2, and the position of the tensioning shaft 31 is controlled to control the tensioning degree of the flexible member 2. In one embodiment, the two tensioning shafts 31 may be provided at two ends of the flexible member 2 in the length direction. In another embodiment, the tension shaft 31 may be a single shaft, one end of the flexible member 2 may be fixed, and the other end may be connected to the tension shaft 31, and the tension of the flexible member 2 may be changed by rolling the tension shaft 31 or moving the tension shaft 31.

Further, as shown in fig. 4 and 5, in the present disclosure, the tensioning mechanism 3 may optionally further include a first guide bar 32, a first link 33, and a second link 34, a first elastic member 35, a second elastic member 36. The tensioning shafts 31 include a first tensioning shaft 311 and a second tensioning shaft 312, the first tensioning shaft 311 and the second tensioning shaft 312 are respectively connected to two ends of the flexible member 2 in the length direction, and optionally, the first tensioning shaft 311 and the second tensioning shaft 312 are respectively parallel to the width direction of the flexible member 2. One end of the first link 33 is hinged to the first guide bar 32 and the other end is connected to the first tensioning shaft 311, one end of the second link 34 is hinged to the first guide bar 32 and the other end is connected to the second tensioning shaft 312, and the first guide bar 32 can be used for being connected to a driving mechanism. The first elastic element 35 is sleeved on the first connecting rod 33 and has one end abutting against the first tensioning shaft 311, the second elastic element 36 is sleeved on the second connecting rod 34 and has one end abutting against the second tensioning shaft 312, and in an initial state, the first elastic element 35 and the second elastic element 36 are in a compressed state. Based on this, under the action of the first elastic member 35 and the second elastic member 36, a certain angle is maintained between the first link 33 and the second link 34, and the first tensioning shaft 311 and the second tensioning shaft 312 are maintained at a position where the flexible member 2 is tensioned.

Optionally, as shown in fig. 4 and 5, the tensioning mechanism 3 further includes a sliding block 37 axially movably sleeved on the first guide rod 32, and one end of the first connecting rod 33 and one end of the second connecting rod 34 are respectively hinged to the sliding block 37, that is, the first connecting rod 33 and the second connecting rod 34 are respectively hinged to the first guide rod 31 through the sliding block 37. Since the sliding block 37 is movably disposed on the first guide bar 32 in the axial direction, the tension of the flexible member 2 by the tension mechanism 3 can be adjusted by adjusting the axial position of the sliding block 37 on the first guide bar 32.

In the above embodiment, the tensioning adopts a link structure, and in other embodiments of the present disclosure, the tensioning mechanism 3 may also be a gravity swing arm structure, for example, the gravity swing arm structure includes a counterweight arm and a mounting bracket, a counterweight is mounted at an end of the counterweight arm, and the counterweight arm generates a rotation moment around the tensioning shaft 31 under the driving of the gravity G of the counterweight, so as to tension the flexible member 2 and maintain a substantially stable tension. The mounting bracket is used for mounting the counterweight arm and ensuring the parallel mounting of the rotating shaft of the counterweight arm.

As shown in fig. 6, in an embodiment of the present disclosure, the hot bending structure 10 may further include a driving mechanism, and the driving mechanism may include a first driving mechanism 41 for driving the tensioning mechanism 3 to move the flexible members 2 together toward the direction close to the male mold 1. Specifically, referring to fig. 6, the driving mechanism may be in transmission connection with the first guide rod 32 of the tensioning mechanism 3 to drive the first guide rod 32 to move linearly, so as to drive the flexible member 2 to approach or move away from the male die 1.

Optionally, as shown in fig. 6, the driving mechanism may further include a second driving mechanism 42 for driving the male mold 1 to move toward the flexible member 2. Referring to fig. 6, the driving punch 1 can be in transmission connection with a second driving mechanism 42 through a second guide rod 12, and the second driving mechanism 42 drives the second guide rod 12 to move, so that the punch 1 is close to or away from the flexible member 2.

In the above embodiment, both the punch 1 and the flexible member 2 are movable toward or away from each other, that is, both the punch 1 and the flexible member 2 are movable. In the hot bending process, only one of the first driving mechanism 41 and the second driving mechanism 42 may be operated, or both of them may be operated simultaneously, which may be determined according to actual process requirements, and this disclosure does not limit this.

It will be appreciated that in other embodiments of the present disclosure, one of the punch 1 and the flexible member 2 may be fixed and the other may be provided movably, and correspondingly, only one driving mechanism may be provided.

The present disclosure is not limited to the specific structure of the driving mechanism, and the first driving mechanism 41 and the second driving mechanism 42 may be a linear motor, a hydraulic cylinder, an air cylinder, or the like. When a linear motor is used, the push rod of the linear motor may be connected to the first guide bar 32 of the tensioning mechanism 3 and the second guide bar 12 of the punch 1, respectively.

It should be noted that, in the present disclosure, the flexible component 2 is mounted on the tensioning mechanism 3 in a manner and method including, but not limited to, the two-end fixing method shown in fig. 1 to 6, and the tensioning mechanism 3 fixes the flexible component 2 and maintains a uniform tensioning state, and at the same time, the flexible component 2 can be conveniently replaced or repaired. The tensioning mechanism 3 tensions the flexible member 2 by, but not limited to, gravity, elastic force, etc.

According to another aspect of the present disclosure, there is provided a hot bending method, which is applicable to the hot bending structure 10 described above, the method including:

s1: heating glass 20 to be bent to a preset temperature, then placing the heated glass on the forming arc surface 11 of the male die 1 or the flexible part 2, and configuring the flexible part 2 in a tensioning state;

s2: at least one of the flexible piece 2 and the male die 1 is driven to move towards the other to press the glass 20, so that the flexible piece 2 and the glass 20 are bent together until the glass 20 is bent to be attached to the forming arc surface 11 of the male die 1;

s3: at least one of the flexible member 2 and the male mold 1 is driven to move away from the other, and the glass 20 is removed.

It is understood that, in step S1, the flexible member 2 may be mounted to the tensioning mechanism 3, so that the flexible member 2 is kept in a tensioned state by the tensioning mechanism 3; alternatively, the opposite ends of the flexible member 2 may be fixed in tension so that the flexible member 2 is kept in a tensioned state.

In step S2, the flexible member 2 and/or the punch 1 may be driven to move toward each other by a driving mechanism, or may be driven manually by a tool, which is not limited in the present disclosure. Also, in step S3, the flexible member 2 and/or the punch 1 are driven by the driving mechanism to move away from each other, or manually driven by a tool.

In one embodiment of the present disclosure, in particular, in the hot bending, the glass 20 to be hot bent, the male mold 1 may be heated to a predetermined temperature first, and then the glass 20 may be placed on the upper surface of the male mold 1. The flexible part 2 is positioned above the male die 1 and horizontally unfolded under the action of tension under the action of the external tensioning mechanism 3; when the tensioning mechanism 3 moves toward the punch 1 by the first driving mechanism 41, the flexible member 2 is first brought into full contact with the glass 20 by the pressing down of the tensioning shaft 31. Then, the tensioning shaft 31 continues to press downwards, the flexible part 2 continues to press the glass 20 downwards, the flexible part 2 transmits the acting force from the tensioning shaft 31 to the upper surface of the glass 20, and the contact force is generated at the contact point of the lower surface of the glass 20 and the convex die 1, so that the two ends of the glass 20 bend and deform towards the arc surface of the convex die 1. The tangent point A of the lower surface of the glass 20 and the upper surface of the cambered surface of the male die 1 gradually moves outwards along with the progress of bending until the tangent point A coincides with the outer end point of the glass 20, and finally the upper surface of the male die 1 is completely covered by the flexible part 2, as shown in figure 3.

It is understood that in S1, referring to fig. 1 to 4, when the flexible member 2 is positioned above the male mold 1, the glass 20 to be hot-bent may be placed on the flexible member 2. Referring to fig. 5, when the flexible member 2 is positioned below the male mold 1, the glass 20 to be hot-bent may be placed on the flexible member 2. In addition, when the flexible member 2 and the male mold 1 are horizontally spaced, in an initial state, the glass 20 may be held therebetween by using another clamping structure that releases the glass 20 when the flexible member 2 and the male mold 1 come close to contact with the glass 20, respectively.

Further, in S2, the flexible member 2 may be kept stationary and the punch 1 may be driven by the first driving mechanism 41, or the punch 1 may be kept stationary and the tensioning mechanism 3 may be driven by the second driving mechanism 42, or the punch 1 and the flexible member 2 may be driven relatively closer to or farther from each other by the first driving mechanism 41 and the second driving mechanism 42, respectively.

Further, in order to ensure the quality of the hot bending of the glass 20, in step S1, the flexible member 2 may be kept parallel to the glass 20, that is, in the initial state, the flexible member 2 is disposed parallel to the glass 20; in step S2, the flexible member 2 is kept bent in synchronization with the glass 20,

in addition, in step S1, before the glass 20 is subjected to the press bending action, the flexible member 2 may be heated to a preset temperature, for example, using the heating device 21. Like this, adopt heating device 21 to heat and then to one of them surperficial upper surface heating of glass 20 to flexible 2, make two upper and lower surfaces of glass 20 can realize raising the temperature in step, avoid leading to the unstable quality defect of glass 20 design quality because of two surface temperature desynchronies of glass 20.

According to another aspect of the present disclosure, as shown in fig. 6, a hot bending machine 100 is provided, wherein the hot bending machine 100 comprises a first temperature control assembly, a second temperature control assembly 60 and the hot bending structure 10, the first temperature control assembly is used for heating or cooling the glass 20, and the second temperature control assembly 60 is used for heating or cooling the male mold 1.

Alternatively, as shown in fig. 6, the hot bending machine 100 may further include a frame 90 and a forming furnace 80, the forming furnace 80 being mounted on the frame 90, and the hot bending structure 10 being disposed in the forming furnace 80. Here, the frame 90 serves as a mounting bracket and also serves as a manual operation platform. The forming furnace 80 has the functions of heat preservation and sealing, and can ensure the temperature in the furnace and the clean environment; optionally, different numbers of partition boards 140 may be disposed inside the forming furnace 80 according to actual requirements, so as to ensure independent and stable temperatures in different areas.

Optionally, the hot bending machine 100 further comprises a transportation assembly, the transportation assembly comprises a feeding mechanism 110, an discharging mechanism 120 and a manipulator 130, the feeding mechanism 110 is used for transporting the glass 20 to the hot bending structure 10, the discharging mechanism 120 is used for transporting the glass 20 from the hot bending structure 10 to the outside of the furnace body, and the manipulator 130 is used for transferring the glass 20 among different parts.

The glass 20 can be placed on the feeding mechanism 110 through a manual or automatic feeding mechanism, and the feeding mechanism 110 then feeds the glass 20 into the forming furnace 80; the discharging mechanism 120 transports the hot bent glass 20 out of the furnace, and then the glass 20 is transported to a subsequent process by a manual or automatic discharging mechanism. The number of the feeding mechanisms 110 and the discharging mechanisms 120 can be increased or decreased according to circumstances, and manual operation can be adopted instead of the prior art.

The manipulator 130 may be provided with only one set, or may be provided with a plurality of sets or may be eliminated as necessary. Referring to fig. 6, two sets of manipulators 130 are provided, wherein one set of manipulators 130 is used for transferring the glass 20 before hot bending among different stations and finally transferring the glass 20 from the feeding mechanism 110 to the hot bending structure 10; another set of robot arms 130 is used to take the glass 20 after the hot bending is completed from the hot bending structure 10, transfer the glass to the discharging mechanism 120, and transfer the glass between the subsequent stations.

The first temperature control assembly may be plural, wherein the first temperature control assembly disposed between the inlet of the forming furnace 80 and the hot bending structure 10 may be named as an upstream temperature control assembly 51; the first temperature control assembly disposed between the hot bend structure 10 and the outlet of the forming furnace 80 may be designated as the downstream temperature control assembly 52.

The number of the upstream temperature control assemblies 51 and the downstream temperature control assemblies 52 can be set according to the requirement, and a plurality of the upstream temperature control assemblies 51 arranged between the inlet of the forming furnace 80 and the hot bending structure 10 are matched to set a heating curve so as to ensure that the glass 20 is heated to the required process temperature. Each downstream temperature control assembly 52 disposed between the hot bend structure 10 and the exit of the forming furnace 80 is cooperatively configured with a cooling profile to ensure that the glass 20 is cooled to the desired process temperature.

The first temperature control assembly is arranged in the forming furnace 80 and can be integrated with a heating unit 71 and a cooling unit 72, and the heating unit 71 can be designed according to the number of the parts, the heating power, the shape and other parameters. The cooling unit 72 is placed at different positions according to actual requirements so as to ensure the temperature rise and fall rate and temperature of the area; the number, structure, cooling power and other parameters of the cooling device are different according to different positions.

The second temperature control assembly 60 is disposed in the forming furnace 80, and may also be integrated with a heating unit (not shown) and a cooling unit 72 for heating the male mold 1 and cooling the glass 20 after the glass 20 is press-bent to set the glass 20. The second temperature control assembly 60 may be directly integrated with the male mold 1, or may not be integrated with the male mold 1, and may be moved to a predetermined position to heat or cool the male mold 1 when necessary. The present disclosure is not limited thereto.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A hot bending structure is characterized by comprising a punch (1) and a flexible part (2), wherein the flexible part (2) is configured in a tensioning state, the punch (1) is provided with a forming arc surface (11), at least one of the flexible part (2) and the punch (1) can move relative to the other so that the flexible part (2) and the punch (1) can press glass (20) and the glass (20) can be bent to be attached to the forming arc surface (11).

2. Hot bend according to claim 1, characterized in that the hot bend (10) further comprises heating means (21) for heating the flexible element (2).

3. A hot bend structure according to claim 1, characterized in that the arc length (S) of the shaping arc (11) is greater than the length (L1) of the section of glass (20) to be bent, and the length (L2) of the flexible member (2) is not less than the arc length (S) of the shaping arc (11).

4. The hot-bending structure according to claim 1, wherein the hot-bending structure (10) further comprises a tensioning mechanism (3), the tensioning mechanism (3) is used for providing a tensioning force to the flexible member (2) so as to keep the flexible member (2) in a tensioned state, and the tensioning mechanism (3) comprises a tensioning shaft (31) used for tensioning the flexible member (2).

5. A hot-bending structure according to claim 4, wherein the tensioning mechanism (3) further comprises a first guide rod (32), a first connecting rod (33), a second connecting rod (34), a first elastic member (35), and a second elastic member (36), the tensioning shaft (31) comprises a first tensioning shaft (311) and a second tensioning shaft (312), the first tensioning shaft (311) and the second tensioning shaft (312) are respectively connected at two ends of the flexible member (2) in the length direction, one end of the first connecting rod (33) is hinged to the first guide rod (32) and the other end is connected to the first tensioning shaft (311), one end of the second connecting rod (34) is hinged to the first guide rod (32) and the other end is connected to the second tensioning shaft (312), the first elastic member (35) is sleeved on the first connecting rod (33) and one end abuts against the first tensioning shaft (311), the second elastic piece (36) is sleeved on the second connecting rod (34) and one end of the second elastic piece abuts against the second tensioning shaft (312), and in an initial state, the first elastic piece (35) and the second elastic piece (36) are in a compression state.

6. A hot-bending structure according to any one of claims 1-5, wherein the hot-bending structure (10) further comprises a driving mechanism, the driving mechanism comprising a first driving mechanism (41) for driving the flexible member (2) to move towards a direction approaching or moving away from the male die (1).

7. A hot-bending structure according to any one of claims 1-5, wherein the hot-bending structure (10) further comprises a driving mechanism, and the driving mechanism comprises a second driving mechanism (42) for driving the male die (1) to move towards a direction close to or away from the flexible member (2).

8. A hot bending method applied to the hot bending structure according to any one of claims 1 to 7, characterized by comprising:

s1: heating the glass (20) to be bent to a preset temperature, then placing the glass between a forming arc surface (11) of the punch (1) or the flexible piece (2) or the forming surface (11) and the flexible piece (2), and configuring the flexible piece (2) in a tensioning state;

s2: driving at least one of the flexible piece (2) and the punch (1) to move towards the other to press the glass (20), so that the flexible piece (2) and the glass (20) are bent together until the glass (20) is bent to be attached to the forming arc surface (11) of the punch (1);

s3: at least one of the flexible member (2) and the male mold (1) is driven to move away from the other, and the glass (20) is removed.

9. The hot bending method according to claim 8, wherein in the S1, the temperature of the flexible member (2) is heated to a preset temperature.

10. A hot bending machine, comprising a first temperature control assembly for heating or cooling the glass (20), a second temperature control assembly (60) for heating or cooling the male mold (1), and the hot bending structure (10) according to any one of claims 1 to 7.

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