阅读说明：本技术 一种弧形弯曲玻璃的热弯成型方法 (Hot bending forming method for arc-shaped bent glass ) 是由 赵雷军 侯立伟 牛洪刚 于 2021-03-03 设计创作，主要内容包括：一种弧形弯曲玻璃的热弯成型方法,在玻璃进入成型装置前,调弧传动组件根据目标弧度的大小,计算机控制自动调弧至目标半径,然后由变弧提升传动组提升变弧机构端部至一定高度,使变弧机构由展平状态变为一端翘起的弧形状态,并使得压辊与托辊之间形成与目标弧度大小一致的弧形通道,而后玻璃进入该弧形通道内并在一定温度下逐步弯曲成型；在变弧机构输送玻璃的末端衔接卸片机构,通过动力机构调整卸片机构在承接位置和送出位置之间切换,在所述承接位置,卸片机构迎接变弧机构输出的玻璃,在所述从送出位置,卸片机构将弯曲成型的玻璃送至下一个工序。可实现弧形玻璃的热弯生产无模具化,同时具备高产能,低功耗,重复精度高的特点。(Before glass enters a forming device, an arc adjusting transmission assembly automatically adjusts an arc to a target radius according to the size of a target radian under the control of a computer, then an arc changing mechanism end is lifted to a certain height by an arc changing lifting transmission set, so that the arc changing mechanism is changed from a flat state into an arc state with one end tilted, an arc channel with the size consistent with the target radian is formed between a press roller and a carrier roller, and then the glass enters the arc channel and is gradually bent and formed at a certain temperature; the tail end of the arc-changing mechanism for conveying the glass is connected with the sheet unloading mechanism, the sheet unloading mechanism is adjusted through the power mechanism to switch between a receiving position and a sending position, the sheet unloading mechanism faces the glass output by the arc-changing mechanism at the receiving position, and the sheet unloading mechanism sends the bent glass to the next process at the sending position. The hot bending production of the arc glass can be realized without a mould, and the method has the characteristics of high productivity, low power consumption and high repetition precision.)

1. A method of hot bend forming of curved bent glass comprising:

loading the glass to be processed into a loading area;

heating the loaded glass through a heating zone;

bending and molding the heated glass by a molding device;

the bent and formed glass is subjected to sheet discharging in a sheet discharging area;

the method is characterized in that: the step of bending and forming the heated glass by the forming device comprises the following steps:

s1, before glass enters a forming device, the arc adjusting transmission assembly automatically adjusts the arc to a target radius under the control of a computer according to the size of a target arc, then the end part of the arc changing mechanism is lifted to a certain height by the arc changing lifting transmission assembly, so that the arc changing mechanism is changed from a flat state to an arc state with one end tilted, an arc channel with the size consistent with the size of the target arc is formed between the press roller and the carrier roller, and then the glass enters the arc channel and is gradually bent and formed at a certain temperature;

and S2, connecting the sheet unloading mechanism at the tail end of the glass conveyed by the arc changing mechanism, adjusting the sheet unloading mechanism through the power mechanism to switch between a receiving position and a sending position, wherein the sheet unloading mechanism is opposite to the glass output by the arc changing mechanism at the receiving position, and the sheet unloading mechanism sends the bent glass to the next process at the sending position.

2. A method of hot bend forming of curved glass according to claim 1, wherein: in the step S2: the sheet unloading mechanism adopts a flexible conveying mode or a rigid conveying mode.

3. A method of hot bend forming of curved glass according to claim 1, wherein: in the step S2:

the sheet unloading mechanism comprises a flexible overturning sheet unloading mechanism and an overturning sheet unloading mechanism lifting transmission set, and the flexible overturning sheet unloading mechanism is switched between a bearing position and a sending position through the output power of the overturning sheet unloading mechanism lifting transmission set;

when the arc changing mechanism is lifted to the target radian, one end of the flexible overturning and sheet unloading mechanism is lifted along with the arc changing mechanism, and the other end of the flexible overturning and sheet unloading mechanism is lifted to a certain height, so that the upper surface of the flexible overturning and sheet unloading mechanism is positioned at a tangent position of an arc radius circle of the arc mechanism and at the bearing position, and the roller way sends the bent and formed glass to the upper surface of the flexible overturning and sheet unloading device; when all the glass is positioned on the upper surface of the flexible overturning and sheet unloading mechanism, adjusting one end of the flexible overturning and sheet unloading mechanism, which is far away from the arc changing mechanism, to descend to an initial position, and then positioning the end at a delivery position, and delivering the bent and formed glass to the next procedure by the flexible sheet unloading mechanism.

4. A method of hot bend forming of curved glass according to claim 1, wherein: the glass bending device also comprises a cooling unit for cooling the bent and formed glass.

5. A method of hot bend forming of curved glass according to claim 1, wherein: in step S1, a high to low temperature gradient is formed along the glass process travel direction by arranging the heating elements.

6. A method of hot bend forming of curved glass according to claim 1, wherein: the glass bending forming process is completed in a sealed cavity, and heat insulating materials are laid on the four walls of the cavity.

7. The method of claim 6, wherein the step of: the cavity is internally provided with a heating unit, the temperature of the hot bending forming device area is heated to a required temperature range through the heating unit, and a temperature gradient from high to low required by the process is formed at the input end and the output end of the glass.

8. The method of hot bend forming of curved glass according to claim 7, wherein: the heating unit comprises an upper heating unit and a lower heating unit, wherein the upper heating unit and the lower heating unit can keep a fixed position relation with the upper surface and the lower surface of the glass along with the change of the arc shape.

9. A method of hot bend forming of curved glass according to claim 1, wherein: high-temperature-resistant viscous rubber rings are attached to the carrier roller and the compression roller, so that the glass can conveniently climb to the upper surface of the sheet unloading mechanism.

10. A hot bending forming device for arc-shaped bent glass is sequentially provided with a sheet feeding unit, a heating unit, a glass hot bending forming unit and a sheet taking unit along the advancing direction of the glass, and the glass to be processed is subjected to sheet feeding, heating treatment, hot bending forming and sheet discharging to finish treatment;

the method is characterized in that: the glass hot bending forming unit comprises:

the arc adjusting transmission assembly automatically adjusts the arc to a target radius under the control of a computer according to the size of a target radian, then the end part of the arc adjusting mechanism is lifted to a certain height by the arc adjusting lifting transmission assembly, so that the arc adjusting mechanism is changed from a flat state into an arc state with one end tilted, an arc channel with the size consistent with the size of the target radian is formed between the press roller and the carrier roller, and the glass enters the arc channel to be gradually bent and molded;

the flexible overturning and unloading mechanism and the overturning and unloading mechanism lifting transmission set are arranged at the tail end of glass conveyed by the variable arc mechanism, the overturning and unloading mechanism lifting transmission set drives the flexible overturning and unloading mechanism to move so as to switch between a bearing position and a delivery position, the bearing position, the flexible overturning and unloading mechanism and the flexible overturning and unloading mechanism are connected with the glass output by the variable arc mechanism, and the flexible overturning and unloading mechanism delivers the bent and formed glass to the next process from the delivery position.

Technical Field

The invention relates to the technical field of arc-shaped glass processing, in particular to a hot bending forming method of arc-shaped bent glass.

Background

At present, hot bending forming of arc glass at home and abroad can be roughly divided into two types, wherein the first type is that one or more molds consistent with a target arc are placed in a heating zone, glass is placed on the molds, then the glass is heated until the glass is softened until the glass is completely attached to the molds, then the heating zone is gradually cooled to the ambient temperature, and then the glass is taken out; the second type is that a plurality of moulds are adopted, glass is arranged on the moulds and respectively and circularly operated in a heating area, a cold area and a sheet taking area, and multi-station type continuous production can be realized. The two technological methods have the advantages of high energy consumption, low production efficiency and low repetition precision of the product after the glass is subjected to hot bending forming in different degrees. In the production process of glass with uniform specification, a large number of moulds are required to be prepared, and the preparation and storage of the moulds are difficult problems to be solved.

Disclosure of Invention

The invention aims to solve the technical problems, and provides a hot bending forming method of arc-shaped bent glass, which can realize the hot bending production of the arc-shaped glass without a mould and has the characteristics of high productivity, low power consumption and high repeatability precision.

The technical scheme adopted by the invention is as follows: a method of hot bend forming of curved bent glass comprising:

loading the glass to be processed into a loading area;

heating the loaded glass through a heating zone;

bending and molding the heated glass by a molding device;

the bent and formed glass is subjected to sheet discharging in a sheet discharging area;

the step of bending and forming the heated glass by the forming device comprises the following steps:

s1, before glass enters a forming device, the arc adjusting transmission assembly automatically adjusts the arc to a target radius under the control of a computer according to the size of a target arc, then the end part of the arc changing mechanism is lifted to a certain height by the arc changing lifting transmission assembly, so that the arc changing mechanism is changed from a flat state to an arc state with one end tilted, an arc channel with the size consistent with the size of the target arc is formed between the press roller and the carrier roller, and then the glass enters the arc channel and is gradually bent and formed at a certain temperature;

and S2, connecting the sheet unloading mechanism at the tail end of the glass conveyed by the arc changing mechanism, adjusting the sheet unloading mechanism through the power mechanism to switch between a receiving position and a sending position, wherein the sheet unloading mechanism is opposite to the glass output by the arc changing mechanism at the receiving position, and the sheet unloading mechanism sends the bent glass to the next process at the sending position.

Further optimization, in the step S2: the sheet unloading mechanism adopts a flexible conveying mode or a rigid conveying mode.

Further optimization, in the step S2:

the sheet unloading mechanism comprises a flexible overturning sheet unloading mechanism and an overturning sheet unloading mechanism lifting transmission set, and the flexible overturning sheet unloading mechanism is switched between a bearing position and a sending position through the output power of the overturning sheet unloading mechanism lifting transmission set;

when the arc changing mechanism is lifted to the target radian, one end of the flexible overturning and sheet unloading mechanism is lifted along with the arc changing mechanism, and the other end of the flexible overturning and sheet unloading mechanism is lifted to a certain height, so that the upper surface of the flexible overturning and sheet unloading mechanism is positioned at a tangent position of an arc radius circle of the arc mechanism and at the bearing position, and the roller way sends the bent and formed glass to the upper surface of the flexible overturning and sheet unloading device; when all the glass is positioned on the upper surface of the flexible overturning and sheet unloading mechanism, adjusting one end of the flexible overturning and sheet unloading mechanism, which is far away from the arc changing mechanism, to descend to an initial position, and then positioning the end at a delivery position, and delivering the bent and formed glass to the next procedure by the flexible sheet unloading mechanism.

Further optimized, the glass bending device further comprises a cooling unit for cooling the bent and formed glass.

Further preferably, in step S1, the heating element is arranged so that a high to low temperature gradient is formed along the glass process travel direction.

Further optimizing, the glass bending forming process is completed in a sealed cavity, and heat insulation materials are laid on the four walls of the cavity.

Further optimizing, the cavity is internally provided with a heating unit, the temperature of the hot bending device area is heated to a required temperature range through the heating unit, and a temperature gradient from high to low required by the process is formed at the input end and the output end of the glass.

Preferably, the heating unit comprises an upper heating unit and a lower heating unit, wherein the upper heating unit and the lower heating unit can keep a fixed position relation with the upper surface and the lower surface of the glass along with the change of the arc shape.

Further optimize, high temperature resistant viscidity rubber ring is attached to on bearing roller and the compression roller, makes things convenient for glass to climb to unload piece mechanism upper surface.

A hot bending forming device for arc-shaped bent glass is sequentially provided with a sheet feeding unit, a heating unit, a glass hot bending forming unit and a sheet taking unit along the advancing direction of the glass, and the glass to be processed is subjected to sheet feeding, heating treatment, hot bending forming and sheet discharging to finish treatment;

the glass hot bending forming unit comprises:

the arc adjusting transmission assembly automatically adjusts the arc to a target radius under the control of a computer according to the size of a target radian, then the end part of the arc adjusting mechanism is lifted to a certain height by the arc adjusting lifting transmission assembly, so that the arc adjusting mechanism is changed from a flat state into an arc state with one end tilted, an arc channel with the size consistent with the size of the target radian is formed between the press roller and the carrier roller, and the glass enters the arc channel to be gradually bent and molded;

the flexible overturning and unloading mechanism and the overturning and unloading mechanism lifting transmission set are arranged at the tail end of glass conveyed by the variable arc mechanism, the overturning and unloading mechanism lifting transmission set drives the flexible overturning and unloading mechanism to move so as to switch between a bearing position and a delivery position, the bearing position, the flexible overturning and unloading mechanism and the flexible overturning and unloading mechanism are connected with the glass output by the variable arc mechanism, and the flexible overturning and unloading mechanism delivers the bent and formed glass to the next process from the delivery position.

The invention has the beneficial effects that:

according to the scheme, the method and the equipment for hot bending forming of the glass are optimized, so that the hot bending production of the arc-shaped glass can be realized without a mold, and the characteristics of high productivity, low power consumption and high repetition precision are achieved. Compared with the prior art, the arc-shaped bent glass forming method has novel and unique conception and is easy to implement; meanwhile, compared with the current technical situation in the industry, the productivity is improved by geometric progression, the effect is very obvious, the labor intensity of workers is reduced, and the surface optical performance of the product is greatly improved in size precision.

Drawings

FIG. 1 is a process flow diagram of the present invention;

FIG. 2 is a schematic view of the structure of the molding apparatus of the present invention;

FIG. 3 is a schematic view of the forming apparatus in a receiving position and a delivery position;

reference numerals: 1. the device comprises an arc changing mechanism, a lower heating unit, a heating unit, an upper heating unit, a compression roller way, a variable arc lifting transmission set, a flexible overturning and sheet unloading mechanism, a turnover and sheet unloading mechanism lifting transmission set, a roller way power input unit, a variable arc adjusting transmission assembly and a heat preservation wallboard, wherein the lower heating unit is 2, the upper heating unit is 3, the upper heating unit is 4, the compression roller way is 5, the roller.

Detailed Description

The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

It should be noted that: the creation personnel of the technical scheme are engaged in the equipment development and development work of the hot bending forming of the glass and the curved surface toughened glass for a long time, accumulate abundant practical experience, creatively develop the hot bending forming method and the device of the arc glass, can realize the hot bending production of the arc glass without mould, and simultaneously have the characteristics of high productivity, low power consumption and high repetition precision.

The present solution is described in detail below with reference to the attached drawings: as shown in fig. 1, a method for hot bending glass into a curved shape includes the steps of: loading the glass to be processed into a loading area; heating the loaded glass through a heating zone; bending and molding the heated glass by a molding device; the bent and formed glass is subjected to sheet discharging in a sheet discharging area; wherein: the step of bending and forming the heated glass by the forming device comprises the following steps:

s1, before glass enters a forming device, the arc adjusting transmission assembly automatically adjusts the arc to a target radius under the control of a computer according to the size of a target arc, then the end part of the arc changing mechanism is lifted to a certain height by the arc changing lifting transmission assembly, so that the arc changing mechanism is changed from a flat state to an arc state with one end tilted, an arc channel with the size consistent with the size of the target arc is formed between the press roller and the carrier roller, and then the glass enters the arc channel and is gradually bent and formed at a certain temperature;

and S2, connecting the sheet unloading mechanism at the tail end of the glass conveyed by the arc changing mechanism, adjusting the sheet unloading mechanism through the power mechanism to switch between a receiving position and a sending position, wherein the sheet unloading mechanism is opposite to the glass output by the arc changing mechanism at the receiving position, and the sheet unloading mechanism sends the bent glass to the next process at the sending position.

It should be noted that: the sheet unloading mechanism is connected with the tail end of the arc-changing mechanism for conveying the glass, the posture of the sheet unloading mechanism is adjusted through the power mechanism and is switched between the receiving position and the sending position, and the sheet unloading mechanism described herein can be used for overturning and unloading sheets, and can also be used for platform switching or other glass relay transfer modes; in addition, the sheet unloading mechanism can adopt a flexible conveying mode of a conveying belt or a rigid conveying mode such as a roller way and the like; the structure adopted in this embodiment is as follows: the sheet unloading mechanism comprises a flexible overturning sheet unloading mechanism 7 and an overturning sheet unloading mechanism lifting transmission set 8, and the flexible overturning sheet unloading mechanism 7 is switched between a receiving position and a sending position through the output power of the overturning sheet unloading mechanism lifting transmission set 8; after the arc changing mechanism 1 is lifted to the target radian, one end of the flexible overturning and sheet unloading mechanism 7 is lifted along with the arc changing mechanism 1 and is at the same height as the tail end of the output glass of the arc changing mechanism 1, and the other end of the flexible overturning and sheet unloading mechanism is lifted to a certain height, so that the upper surface of the flexible overturning and sheet unloading mechanism 7 is positioned at the tangent position of the arc radius circle of the arc changing mechanism 1, and is positioned at the bearing position at the moment, and the roller table sends the bent and formed glass to the upper surface of the flexible overturning and sheet unloading device 7; when all the glass is positioned on the upper surface of the flexible overturning and sheet-unloading mechanism 7, adjusting one end of the flexible overturning and sheet-unloading mechanism, which is far away from the arc-changing mechanism, to descend to an initial position, and then positioning the end to a sending-out position, and sending the bent and formed glass to the next process, such as a roller mechanism in a cooling unit, by the flexible overturning and sheet-unloading mechanism 7.

Referring to FIG. 1, a process flow diagram of a method for hot bending curved glass according to the present invention is shown, wherein: the glass is placed on a sheet feeding table in advance, then is heated, is conveyed to a hot bending forming area after being heated to a deformation temperature in a heating area, is transferred to a cooling area through flexible overturning and sheet unloading after being subjected to hot bending forming, is further cooled, and is conveyed to a sheet taking area, so that the whole hot bending forming process is completed.

As shown in figures 2 and 3: before glass enters a forming device, the arc adjusting transmission assembly 10 automatically adjusts the arc to a target radius under the control of a computer according to the size of a target arc, then the arc changing mechanism 1 is lifted to a certain height by the arc changing lifting transmission assembly 6, so that the arc changing mechanism 1 is changed into an arc state with one end tilted from a flat state shown in a figure 2, as shown in figure 3, one end of the arc changing mechanism 1 close to a heating unit 13 is kept fixed at a position and used for connecting glass output by the heating unit, and the other end of the arc changing mechanism tilts through the transmission of the arc changing lifting assembly 6 and the arc adjusting transmission assembly 10 to finally form the arc consistent with the target arc; the flexible overturning and unloading device 7 can rotate along with the end part of the variable arc mechanism, the variable arc mechanism is lifted to a target radian, one end of the flexible overturning and unloading device is lifted along with the variable arc mechanism, the other end of the flexible overturning and unloading device is lifted to a certain height, the upper surface of the flexible overturning and unloading device at the moment is approximately at the tangent position of an arc radius circle of the arc mechanism, the glass is conveniently moved to the upper surface of the flexible overturning and unloading device along the tangential direction by a roller way, when the glass is completely positioned on the upper surface of the flexible overturning and unloading device, the glass is synchronously conveyed on the unloading device at the moment, the other end of the unloading device is lowered to the initial position, and the unloading device is connected with a conveying roller way of a cooling unit.

In the glass hot bending process, an upper heating unit 3 and a lower heating unit 2 are arranged at the upper position and the lower position of a roller way, the upper heating unit and the lower heating unit heat the temperature of a hot bending forming device area to a required temperature range, and a temperature gradient from high to low required by the process is formed at the input end and the output end of glass; in addition, the distance between all the press rolls and the support rollers can be adjusted, so that an arc-shaped channel matched with the thickness of the glass is formed between the press rolls and the support rollers.

Furthermore, the above-mentioned glass bending process can be performed in a closed chamber, taking into account the variations of the ambient temperature, for example: a tubular cavity body with closed doors at two ends is adopted, and heat insulation materials are laid on four walls of the cavity body, such as heat insulation wall boards 11 and the like; the cavity can be further provided with a heating unit, the temperature of the hot bending device area is heated to a required temperature range through the heating unit, and a temperature gradient required by the process from high to low is formed at the input end and the output end of the glass, and what needs to be described is that: this temperature gradient can be set according to the process requirements, and is a well-established technique in the prior art and is not described in more detail here.

It should be noted that: when the equipment meets an emergency and needs to be treated, the heat preservation facility needs to have a function of quickly cooling.

The heating unit described above includes an upper heating unit 3 and a lower heating unit 2, wherein the upper heating unit 3 and the lower heating unit 3 can maintain a fixed positional relationship with the upper and lower surfaces of the glass as the arc shape changes.

In the scheme, the roller way 5 and the roller way 4 are attached with high-temperature-resistant viscous rubber rings, so that the glass can conveniently climb to the upper surface of the piece unloading mechanism.

It should be noted that: in the scheme: the lower carrier roller way and the upper compression roller way can be replaced quickly, and the height of the compression roller can be adjusted, so that an arc-shaped channel matched with the thickness of glass is formed between the compression roller and the carrier roller.

As shown in fig. 1 to 3, a thermal bending apparatus for bending curved glass is provided with a sheet feeding unit, a heating unit, a glass thermal bending unit, a sheet taking unit, and other auxiliary systems in sequence along the glass traveling direction, such as: the glass to be processed is subjected to sheet feeding, heating treatment, hot bending forming and sheet discharging to finish treatment; the glass hot bending forming unit comprises an arc changing mechanism 1, an arc adjusting transmission assembly 10, an arc changing lifting transmission group 6, a flexible overturning and sheet unloading mechanism 7 and an overturning and sheet unloading mechanism lifting transmission group 8, wherein the arc changing mechanism 1, the arc adjusting transmission assembly 10, the arc changing lifting transmission group and the flexible overturning and sheet unloading mechanism lifting transmission group are arranged on the same side of the glass hot bending forming unit, and

the arc adjusting transmission assembly 10 automatically adjusts the arc to a target radius under the control of a computer according to the size of a target radian, then the end part of the arc adjusting mechanism 1 is lifted to a certain height by the arc adjusting transmission assembly 6, so that the arc adjusting mechanism 1 is changed from a flat state into an arc state with one end tilted, an arc channel with the size consistent with the size of the target radian is formed between the press roller and the carrier roller through the arc adjusting transmission assembly 10, and the glass enters the arc channel to be gradually bent and molded; the flexible overturning and sheet discharging mechanism 7 and the overturning and sheet discharging mechanism lifting transmission set 8 are arranged at the tail end of the variable arc mechanism 1 for conveying glass, the overturning and sheet discharging mechanism lifting transmission set 8 drives the flexible overturning and sheet discharging mechanism 7 to move so as to switch between a bearing position and a sending position, the flexible overturning and sheet discharging mechanism faces the glass output by the variable arc mechanism at the bearing position, and the flexible overturning and sheet discharging mechanism sends the bent and formed glass to the next process from the sending position.

It should be noted that: the above device also includes other accessory parts which are not described, such as brackets, guide plates, roller way power units, heating elements and the like, and the other accessory parts can adopt the existing structure and arrangement mode, and are not described in detail herein.

An upper heating unit 3 and a lower heating unit 2 are respectively arranged at the upper position and the lower position of the glass to be processed, the upper heating unit and the lower heating unit heat the temperature in the hot bending forming area to a required temperature range, and a temperature gradient from high to low required by the process is formed at the input end and the output end of the glass.

When the glass conveying device works, after the glass reaches the deformation temperature in the heating area, the glass is conveyed and moves in an arc-shaped channel formed by the pressing roller and the carrier roller, and the glass is deformed into arc-shaped glass along with the arc-shaped channel in the moving process of the glass; because the hot bending forming device has a temperature gradient which is forcibly formed in the advancing direction, after the hot bending forming device leaves the arc-shaped channel, the temperature of the glass is reduced to an undeformable temperature area, and the glass is conveyed to the flexible overturning and sheet unloading mechanism; the flexible overturning and unloading mechanism rotates around the end part of the arc changing mechanism and is rotated and put down to the height of the film taking; after the glass leaves, the flexible overturning and sheet-unloading mechanism is lifted to the height of the splicing sheet again to wait for the next glass to leave the arc-shaped channel.

It should be noted that while the invention has been described in terms of the above-mentioned embodiments, other embodiments are also possible. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended that all such changes and modifications be covered by the appended claims and their equivalents.