RU2816926C1 - Device and method for elimination of stress areas on glass surface - Google Patents

Abstract

FIELD: glass industry.

SUBSTANCE: invention relates to device and method for elimination of stress areas on glass surface. In particular, disclosed device for eliminating stress areas on glass surface comprises transport unit (10), provided with transportation surface for reciprocating transportation of glass (40) in transportation direction; upper air blower assembly (30), made above the transportation surface for directing air during reciprocating movement above the transportation surface in the swinging direction, passing in direction of width of glass (40), and lower air blowing unit (20) provided under transportation surface, for direction of air at reciprocal movement under transportation surface in direction of swinging. At that, transportation unit (10) comprises transportation support frame, a plurality of transport rollers rotatably mounted on a transport support frame, and an arc-forming mechanism used to convert the support transport frame into an arc segment shape, to form a conveying surface in the form of an arc segment on the conveying rollers.

EFFECT: elimination of stress areas on the surface of bent glass during production of bent glass owing to uniform cooling of bent glass.

10 cl, 8 dwg

Description

Field of technology to which the invention relates

The present invention relates to the field of glass production, in particular to a device and method for eliminating stress areas on the surface of glass.

BACKGROUND OF THE INVENTION

Currently, curved tempered glass, especially large arc-shaped curved glass for architectural use, uses a tempering process in which heated glass is fed into a molding area where the molding, tempering and tempering processes are performed simultaneously. During the tempering process, uniform heating of all parts of the glass is required, followed by rapid and uniform tempering. If during the heating and tempering process there is a difference in temperature between any part of the glass surface and the surface as a whole, the tempering process will subsequently leave varying degrees of "marks" on the glass surface. Temper "show" occurs as a result of differences in tempering temperature at different parts of the glass surface during the tempering process, commonly known in the industry as "stress spots" (also "air patterns").

In particular, in FIG. 1 and fig. 2 shows a conventional curved tempered glass manufacturing apparatus including an upper air barrier 1, a lower air barrier 4 and a plurality of transport rollers 3. When the glass 2 is heated to a predetermined softening temperature in an oven, the glass 2 is transported to a curved forming fixture as shown in FIG. 1, in which the glass 2 is transported by rotating the transport rollers 3 between the upper air barrier 1 and the lower air barrier 4. As shown in FIG. 2, the glass 2 is then converted from flat glass to curved glass by an arcing mechanism; then the upper air barrier and the lower air barrier supply air simultaneously to the upper and lower surfaces of the tempering glass; at the same time, with the forward and reverse rotation of the transport rollers 3, the glass 2 swings back and forth in the direction of the arrow shown in Fig. 2, on the curved surface formed by the transport rollers 3. This traditional tempering process results in "dots" or "stripes" of stress areas remaining on the glass surface.

Any bent tempered glass produced by this process will suffer from areas of tempering stress. Due to the different thickness and curvature of glass, heating temperature, air pressure during tempering, blowing distance and other factors, the manifestation of stress areas and the degree of visualization are also different. Essentially, stress areas on the surface of curved tempered glass are “defects” that affect the optical performance of the glass surface. In recent years, as people's awareness of aesthetics has increased, the need for curved tempered glass surfaces with no stress areas or no stress areas visible to the naked eye has increased.

The essence of the invention

In order to overcome the disadvantages of the prior art, as a first object of the present invention, a device is proposed for eliminating stress areas on the surface of glass, wherein the device reciprocates air on the glass at the transport unit through an upper blower unit and a lower air blower unit, which leads to a reduction in stress areas in the glass production process.

As a second object of the present invention, there is provided a method for eliminating stress areas on a glass surface, the method resulting in the reduction of stress areas during a glass manufacturing process by reciprocating air blowing on the glass.

The first object of the present invention is realized by adopting the following technical solutions.

The device for eliminating areas of stress on the surface of the glass contains: a transport unit equipped with a transport surface for reciprocating transport of glass in the direction of transport; an upper blower unit provided above the transport surface, used to direct air to flow back and forth over the transport surface in a swing direction extending in the glass width direction; and a bottom blower unit provided under the transport surface used to direct air to flow back and forth under the transport surface in the swing direction.

In addition, the transport unit contains: a transport support frame; a plurality of transport rollers rotatably mounted on the transport support frame; and an arc-forming mechanism used to convert the supporting transport frame into an arc segment shape to form an arc segment-shaped transport surface on the transport rollers.

In addition, the lower blower assembly includes: a plurality of air barrier support frames connected to a transport support frame; a plurality of air barrier plates rotatably mounted to the air barrier support frame, provided with a plurality of air blow holes used to direct air flow onto the transport surface; and a swing drive mechanism causing the air barrier plates to swing back and forth in the swing direction.

In addition, the swing drive mechanism includes: a motor mounted on the air barrier support frame; and an eccentric wheel, wherein the motor causes the eccentric wheel to rotate, and the eccentric wheel guides the air barrier plates to swing while rotating.

In addition, the lower blower assembly also includes a lift-lower assembly that causes the air barrier plates to move closer to or further away from the transport surface.

In addition, the upper blower assembly is identical in design to the lower blower assembly.

In addition, the arc-forming mechanism includes: a plurality of arc-forming plates; and an arc-plate driving portion used to cause the arc-forming plates to rotate, wherein two adjacent arc-forming plates are pivotally connected to each other, the transport rollers are pivotally connected to the arc-forming plates, each air barrier support frame is connected to each of the arc-forming plates, and two adjacent support frames of the air barrier are connected by means of a universal joint.

In addition, the drive part of the arc-forming plates contains: a sprocket pivotally connected to the support frame of the air barrier; a sprocket shaft synchronously connected to the sprocket; and the drive part of the sprocket shaft.

The second objective of the present invention is achieved by adopting the following technical solutions.

A method for eliminating stress areas on a glass surface includes: a transport step, wherein the glass is transported between an upper blowing unit and a lower blowing unit by a transport unit during a period of tempering and tempering of the bent glass; a glass swinging step, wherein the glass swings back and forth under the action of the transport unit along the transport surface; and an air cooling step, the upper blower unit reciprocatingly blowing in the width direction of the upper surface of the glass, the lower blower unit reciprocatingly blowing in the width direction of the lower surface of the glass.

In addition, the direction of reciprocating glass swing in the glass rocking stage alternates with the direction of reciprocating blowing in the air cooling stage.

In addition, the method for eliminating stress areas on a glass surface also includes a glass manufacturing step; The main components of the device for making tempered glass are, in the direction of the production process, the heating sector and the above-mentioned device; the heating sector contains a furnace chamber, heating elements located in the furnace chamber, and a group of ceramic transport rollers; and the plane consisting of generatrices on the ceramic transport rollers is horizontal.

Compared with the prior art, the positive effects of the present invention are as follows.

During the processing of bent tempered glass, the air blowing position changes from a static state to periodic back-and-forth oscillation along the axial direction of the roller. Using the above method can eliminate the stress areas on the surface of curved tempered glass to the greatest extent, resulting in a significant improvement in the optical performance on the glass surface and visual comfort.

Brief description of graphic materials

In fig. 1 shows a block diagram of the production state of the prior art;

in fig. 2 is a block diagram of another state of prior art production;

in fig. 3 is a block diagram of the air flow direction in the state of the art production;

in fig. 4 is a block diagram of the present invention;

in fig. 5 is a block diagram of air flow direction in a production state according to the present invention;

in fig. 6 is a diagram of a partial structure according to the present invention;

in fig. 7 is a diagram of the assembly structure of the transport unit and the lower blower unit according to the present invention;

in fig. 8 is a diagram of a different assembly of a transport unit and a lower blower unit according to the present invention.

10: transport unit; 11: transport roller; 12: arc-forming plate; 13: asterisk; 20: bottom blower unit; 21: air barrier plate; 22: air barrier support frame; 221: universal joint; 23: eccentric wheel; 24: lifting-lowering unit; 30: top blower unit; 40: glass.

Detailed Description of Preferred Embodiments

The present application is described below in conjunction with the accompanying drawings and by means of specific embodiments.

In the description of the present invention, it should be noted that the terms "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", " in, out and other orientation or lateral position relationships are based on the orientation or lateral position relationships shown in the accompanying graphics. This is intended only to facilitate description and operation, and not to indicate or indicate that said fixture or element has a particular orientation or is designed and operated in a particular orientation. Therefore, they should not be considered as a limitation of the present invention.

Unless otherwise specified, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by those skilled in the art to which this invention relates. The terms used herein to describe the present invention are used only to describe specific embodiments and are not intended to limit the invention.

Embodiment 1

As shown in FIG. 3-8, the device for eliminating stress areas on the glass surface includes a transport unit 10, an upper blower unit 30 and a lower blower unit 20; the transport unit 10 has a transport surface on which the glass 40 can be placed after manufacture, through which the glass 40 can be reciprocated in the transport direction; the glass 40 may be oscillating back and forth as it blows during the tempering period.

Specifically, the upper air blower unit 30 is provided above the transport surface and can direct air to flow back and forth over the transport surface in a swing direction. The lower blower unit 20 is provided under the transport surface and can direct air to flow back and forth under the transport surface in a swing direction, the swing direction being in the width direction of the glass 40. Because the transport direction is generally in the length direction of the glass 40, when blown, the glass 40 is reciprocated by the transport unit 10 in the direction of the length of the glass 40. Driven by the transport unit 10, air can flow through the various segments of the glass 40 in the direction of the length of the glass 40; with the upper blower unit 30 and the lower blower unit 20 extending in the width direction of the glass 40, air can flow in the width direction of the glass 40 guided by the upper blower unit 30 and the lower blower unit 20; in such a configuration, air can flow in both the length direction and the width direction of the glass 40. Based on this structure, using the device for eliminating stress areas on the surface of the glass in the present invention, the glass 40 can be molded in the molding section of the fixture, and then tempered by hardening. The glass 40 may be first heated in the molding section, and then the heated glass 40 may be transported to the tempering section.

When the glass 40 is transported to the tempering section, the upper blower unit 30 and the lower blower unit 20 in the present invention can blow on the upper surface and lower surface of the glass 40 located on the transport surface of the transport unit 10; the upper blower assembly 30 may direct the air to reciprocate in the direction of the width of the glass 40, i.e. the upper blower assembly 30 may blow air back and forth onto the upper surface of the glass 40; likewise, the bottom blower assembly 20 may direct reciprocating air in the direction of the width of the glass 40, i.e. The bottom blower assembly 20 may blow air back and forth against the bottom surface of the glass 40.

Refer to the use of direct air blowing in the prior art shown in FIG. 3.

The upper blower assembly 30 blows air directly onto the top surface of the glass 40; many air blowing points, i.e. A1, A2, A3, A4, A5, A6, A7, A8, etc., can be formed on the upper surface of the glass 40 by the upper blower unit 30. The lower blower unit 20 blows air directly onto the lower surface of the glass 40; many air blowing points, i.e. B1, B2, B3, B4, B5, B6, B7, B8, B9, etc., can be formed on the bottom surface of the glass 40 by the bottom blower unit 20. Based on this design, cooling points (i.e., blowing points air) formed on the upper surface and the lower surface of the glass 40 are identical and inconsistent, thereby forming stress areas at the corresponding positions.

In the present invention, air can be blown back and forth in the width direction of the glass 40 onto the upper surface and the lower surface of the glass 40 by the upper blower unit 30 and the lower blower unit 20; Based on the present structure, a plurality of air blowing points can be mutually formed at the same position by the upper air blowing unit 30; compared to fig. 3 in the prior art, with reference to FIG. 5, a plurality of upper air blowing points may be formed by the upper blowing unit 30 in different positions, i.e. A1, A2, A3, A4, A5., A6, A7, A8, etc. Due to the continuous flow of air during the swing of the air barrier plates 21, the upper air blowing plane can be formed by a plurality of successively connected upper air blowing points, i.e. A1, A2, A3, A4, A5, A6, A7, A8, etc. A plurality of lower air blowing points may be formed by the lower blower assembly 20 in different positions, i.e. B1, B2, B3, B4, B5, B6, B7, B8, B9, etc. Consequently, the lower airflow plane can be formed by a plurality of successively connected lower airflow points, i.e. B1, B2, B3, B4, B5, B6, B7, B8, B9, etc.

In this configuration, the glass 40, driven by the transport unit 10, swings back and forth, with an air release plane formed in the length direction of the glass 40; The back-and-forth swing of the glass 40 interacts with the back-and-forth air flow blown by the upper blower unit 30 and the lower blower unit 20, whereby a plurality of successive cooling points can be formed on the upper surface and on the lower surface of the glass 40, and an air discharge plane is formed in the direction of the glass width 40; the synthesis of the two movements results in a plurality of successive cooling points being formed on the top surface and bottom surface of the glass 40; The glass 40 is tempered through an air release plane formed by successive air release points during the air cooling period to obtain a smoother surface of the glass 40, thereby eliminating areas of stress on the surface of the curved tempered glass 40, resulting in improved optical quality of the glass 40.

Finally, in the present invention, during the processing of the bent tempered glass 40, the air blowing position changes from a static state to periodically reciprocating swing in the width direction of the glass 40, thereby forming an upper air discharge plane and a lower air discharge plane, resulting in a larger open for air plane of the glass 40. Using the above method can eliminate the stress areas on the surface of the curved tempered glass 40 to the greatest extent, resulting in a significant improvement in the optical performance on the surface of the glass 40 and visual comfort.

In particular, the transport unit 10 includes: a transport support frame; a plurality of transport rollers 11 rotatably mounted on a transport support frame; and an arc-forming mechanism used to convert the supporting transport frame into an arc segment shape to form an arc segment-shaped transport surface on the transport rollers 11.

Based on this structure, a plurality of transport rollers 11 are pivotally connected to the transport support frame; during transportation of the glass 40 by each transport roller 11, the support plane formed by each connected transport roller 11 is a transport surface; In such a configuration, the conveying direction is the positioning direction of the conveying rollers 11, and the swing direction is the passing direction of the axis of the conveying rollers 11.

During the tempering process, due to the need to reciprocate the bent glass 40 when a flat transport surface is used, the bent glass 40 can only partially contact the transport rollers 11; When the bent glass 40 is driven back and forth by the transport rollers 11, the bent glass 40 can easily shake and fall. Therefore, to achieve better adherence of the curved glass 40 to the transport surface, the transport support frame can be converted by an arc-forming mechanism into the shape of an arc segment; due to the shape of the arc segment of the transport support frame, the support plane (ie the transport surface) for glass 40 formed by the transport rollers 11 hinged on the transport support frame can also have the shape of an arc segment; During transportation of the bent glass 40, the arc segment-shaped transport surface formed by the transport support frame can also be adaptively adjusted based on the curvature of the bent glass 40.

Of course, the transport rollers 11 can also be replaced by transport wheels. Based on this structure, transport wheels are provided on both sides of the transport support frame; both sides of the glass 40 are supported by a plurality of transport wheels, the support planes of the transport wheels being connected to form a transport surface.

Embodiment 2

In the present embodiment, the lower blower assembly 20 includes a plurality of air barrier support frames 22 connected to a transport support frame; a plurality of air barrier plates 21 rotatably mounted on the air barrier support frame 22 provided with a plurality of air blow holes used to direct air flow onto the transport surface; and a swing drive mechanism causing the air barrier plates 21 to swing back and forth in the width direction of the glass 40.

Based on this structure, when the bottom surface of the glass 40 is cooled by air, the air barrier plates 21 can be driven by the swing drive mechanism to swing relative to the air barrier support frames 22; a plurality of air blowing holes are provided on the air barrier plates 21, when blowing air, due to the swinging of the air barrier plates 21, the air flow directed by the air blowing holes on the air barrier plates 21 to the bottom surface of the glass 40 can be distributed in the swing direction, so that the air blowing is carried out back and forth. progressively onto the lower surface of the glass 40 above the air barrier plates 21.

It should be noted that the distance formed between the reciprocating airflow plane formed by the air barrier plates 21 and the bottom surface of the bent glass 40 may vary greatly when the curvature values of the reciprocating airflow plane formed by the air barrier plates 21 and the bent glass The glasses 40 are generally not the same, which can also lead to a relatively large difference in the cooling temperature at different points of the air flow, as a result of which stress areas can form.

In the present embodiment, the air barrier support frame 22 used for attaching the air barrier plates 21 is connected to the transport support frame, so the air barrier support frame 22 can convert the curvature following the transport support frame, whereby the air flow plane formed by the air barrier plates 21 , can coincide with the arcuate transport surface. The curvature values of the reciprocating airflow plane formed by the air barrier plates 21 and the bent glass 40 are basically the same, as a result of which a uniform airflow point can be formed on the bottom surface of the bent glass 40 by the airflow plane, thereby forming the best airflow points .

In addition, the swing drive mechanism includes a motor mounted on the air barrier support frame 22; and an eccentric wheel 23, wherein the motor causes the eccentric wheel 23 to rotate, and the eccentric wheel 23 guides the air barrier plates 21 to swing during rotation. Based on this design, the air barrier plates 21 are driven into a rocking motion by the rotation of the motor and the rotation of the eccentric wheel 23 driven by the motor; the protruding part of the eccentric wheel 23 can rest against the air barrier plates 21 and drive them during rotation; various positions of the eccentric wheel 23 abut the air barrier plates 21 during one rotation to allow the air barrier plates 21 to swing by the eccentric wheel 23, the swing range being based on the eccentric distance of the eccentric wheel 23.

Of course, the air barrier plates 21 can swing directly when driven by the engine. Based on this design, the swing range is larger; however, since a plurality of air barrier plates 21 are provided, too large a swing range may cause interference and is difficult to control.

In addition, the lower blower assembly 20 further includes a lift-lower assembly 24 that causes the air barrier plates 21 to move closer to or further away from the transport surface. Based on this structure, the air barrier plates 21 can be moved by the lift-lower unit 24 to adjust the distance between the air release plane of the air barrier plates 21 and the bottom surface of the glass 40, and the distance can be adjusted depending on the cooling temperature.

The above-mentioned lift-lower assembly 24 may be a linear output structure such as a cylinder or an electric slider in the prior art.

It should be noted that the air blowing holes on the air barrier plates 21 mentioned above can direct the air flow for dispersion and exhaust; The swing of the air barrier plates 21 provides a uniform flow of cooling air in the width direction of the glass 40, which cooperates with the distribution of air holes on the air barrier plates 21 also in the width direction to further direct the air flow for additional dispersion, i.e. The cooling air flow is distributed in at least two directions, resulting in more uniform tempering at various positions on the top and bottom surfaces of the glass 40, whereby the formation of stress spots can be further reduced.

Embodiment 3

The upper blower unit 30 is identical in structure to the lower blower unit 20 in the first embodiment. However, in the present embodiment, different from the first embodiment, the upper air blower unit 30 is provided above the transport surface and blows quenching air over the transport surface, the operating principle and effects of which are not repeated in detail herein.

Embodiment 4

In the present embodiment, the arc-forming mechanism of the transport unit 10 includes a plurality of arc-forming plates 12; and an arc-plate driving portion used to cause the arc-forming plates 12 to rotate, wherein two adjacent arc-forming plates 12 are pivotally connected to each other, the transport rollers 11 are pivotally connected to the arc-forming plates 12, each air barrier support frame 22 is connected to each of arc-forming plates 12, and two adjacent support frames 22 of the air barrier are connected by means of a universal joint 221.

Based on this design, the transport support frame can be formed by arc-forming plates 12 pivotally connected to each other, to which transport rollers 11 are pivotally attached; during the arc transformation of the transport rollers 11, the driving part of the arc-forming plates causes the arc-forming plates 12 to rotate; rotation on one of the arc-forming plates 12 causes rotation on one of the adjacent arc-forming plates 12, whereby the transport rollers 11 connected to the arc-forming plates 12 can change positions as the arc-forming plates 12 rotate, and the transport rollers 11 can change position on one arc-forming plate 12, thereby forming an arc-shaped transport surface.

It should be noted that the arc-forming plates 12 are hingedly connected by means of a universal joint 221; in particular, the universal joint 221 may be a prior art universal joint. By using a universal joint to make the connection, two adjacent arcuate plates 12 can extend and retract to provide a serial connection between the air barrier support frames 22. In addition, the extension and retraction of the universal joint can satisfy the need for arcing in different curvature states.

It should be noted that the arc-forming plates 12 can be driven into rotation solely by the driving part of the arc-forming plates, or the rotation of one of the arc-forming plates 12 causes rotation of the other arc-forming plates 12.

In addition, the arc-forming mechanism can be realized by using a prior art circuit. Based on fastening using chain links, fastening bases are provided on each chain link, and all ends of the transport rollers 11 are pivotally connected to the fastening bases, so that the transport support frame formed by the chain links can form a certain arc when the chain swings.

Of course, the transport support frame can also be made of flexible materials such as rubber. When the transport support frame on which the transport rollers 11 are rotatably mounted has a certain flexibility, the transport support frame can be deformed to a certain extent under the action of an external force to realize arcing. In such a configuration, the arc-forming mechanism may be simply the use of a lifting cylinder to apply pressure, but such a design may result in insufficient overall strength of the transport unit 10, in which a certain curved surface can only be formed by placing multiple positions for applying pressure, resulting in relatively uncomfortable arching operation.

In addition, the drive part of the arc-forming plates contains a sprocket 13, pivotally connected to the air barrier support frame 22; sprocket shaft synchronously connected to sprocket 13; and the drive part of the sprocket shaft.

Based on this structure, the drive portion of the sprocket shaft causes the sprocket shaft to rotate, and the rotation of the sprocket shaft causes the sprocket 13 to rotate. Since the sprocket 13 is pivotally connected to the air barrier support frame 22 connected to the transport support frame, during the rotation of the air barrier support frame 22, the transport support the frame can be driven to convert at appropriate positions, which can realize the curvature conversion of the transport support frame.

Embodiment 5

A method for eliminating stress areas on a glass surface includes: a transport step, wherein the glass 40 is transported between the upper blower unit 30 and the lower blower unit 20 by the transport unit 10 during a period of tempering and tempering of the bent glass 40; a glass swinging step, the glass swinging back and forth under the action of the transport unit 10 along the transport surface; and an air cooling step, wherein the upper blower unit 30 reciprocates blowing in the width direction of the upper surface of the glass 40, the lower blower unit 20 reciprocates blows in the width direction of the lower surface of the glass 40.

Refer to the use of direct air blowing in the prior art shown in FIG. 3.

The upper blower assembly 30 blows air directly onto the top surface of the glass 40; many air blowing points, i.e. A1, A2, A3, A4, A5, A6, A7, A8, etc., can be formed on the upper surface of the glass 40 by the upper blower unit 30. The lower blower unit blows air directly onto the lower surface of the glass 40; many air blowing points, i.e. B1, B2, B3, B4, B5, B6, B7, B8, B9, etc., can be formed on the bottom surface of the glass 40 by the bottom blower unit 20. Based on this design, cooling points (i.e., blowing points air) formed on the upper surface and lower surface of the glass 40 are identical and inconsistent, thereby forming stress areas at the corresponding positions.

In the present invention, air can be blown back and forth in the width direction of the glass 40 onto the upper surface and the lower surface of the glass 40 by the upper blower unit 30 and the lower blower unit 20; Based on the present structure, a plurality of air blowing points can be mutually formed at the same position by the upper air blowing unit 30; compared to fig. 3 in the prior art, with reference to FIG. 5, a plurality of upper air blowing points may be formed by the upper blowing unit 30 in different positions, i.e. A1, A2, A3, A4, A5., A6, A7, A8, etc. Due to the continuous flow of air during the swing of the air barrier plates 21, the upper air blowing plane can be formed by a plurality of successively connected upper air blowing points, i.e. A1, A2, A3, A4, A5, A6, A7, A8, etc. A plurality of lower air blowing points may be formed by the lower blower assembly 20 in different positions, i.e. B1, B2, B3, B4, B5, B6, B7, B8, B9, etc. Consequently, the lower airflow plane can be formed by a plurality of successively connected lower airflow points, i.e. B1, B2, B3, B4, B5, B6, B7, B8, B9, etc.

In this configuration, the glass 40, driven by the transport unit 10, swings back and forth, with an air release plane formed in the length direction of the glass 40; The back-and-forth swing of the glass 40 interacts with the back-and-forth air flow blown by the upper blower unit 30 and the lower blower unit 20, whereby a plurality of successive cooling points can be formed on the upper surface and on the lower surface of the glass 40, and an air discharge plane is formed in the direction of the glass width 40; the synthesis of the two movements results in a plurality of successive cooling points being formed on the top surface and bottom surface of the glass 40; The glass 40 is tempered through an air release plane formed by successive air release points during the air cooling period to obtain a smoother glass surface, thereby eliminating stress areas on the surface of the bent tempered glass, resulting in improved optical quality of the glass.

Finally, in the present invention, during the processing of bent tempered glass, the air blowing position changes from a static state to periodically reciprocating swing in the width direction of the glass 40, thereby forming an upper air discharge plane and a lower air discharge plane, resulting in a larger open air air plane of glass 40. Using the above method can eliminate the stress areas on the surface of curved tempered glass to the greatest extent, resulting in a significant improvement in the optical performance on the glass surface and visual comfort.

In addition, the reciprocating swing direction of the glass 40 in the glass rocking stage alternates with the reciprocating blowing direction in the air cooling stage.

In other words, the swing direction of the upper blowing air flow and the lower blowing air flow can alternate with the swing direction of the glass 40 driven by the transport unit 10; when the swing direction of the upper blowing air flow and the lower blowing air flow is directed to the left, the swing direction of the glass 40 driven by the transport unit 10 is directed to the right; when the swing direction of the upper blowing air flow and the lower blowing air flow is directed to the right, the swing direction of the glass 40 driven by the transport unit 10 is directed to the left; The swing direction can be controlled by the rotation direction of the motor. Producing two alternating rocking motions allows the top and bottom surfaces of the glass 40 to be quenched and cooled more evenly without easily forming stress spots caused by the quenching, thereby essentially eliminating the stress spots.

Of course, the swing directions can also be the same, since the air flow can be formed into a continuous cooling plane during the rocking, which allows the surface of the glass 40 to be more uniformly exposed to air to effectively reduce stress areas during tempering, thereby improving workmanship.

In addition, the method for eliminating stress areas on a glass surface also includes a glass making step based on using a single bent tempered glass making tool to continue a straight bending or reverse bending process including a heating step, a molding step and a tempering step; straight bending process is defined as a manufacturing process in which the center of curvature at any point on the surface of single bent tempered glass is above the surface after manufacture; The reverse bending process is defined as a manufacturing process in which the center of curvature at any point on the surface of single bent tempered glass is below the surface after manufacture.

The main components of the apparatus for producing single bent tempered glass are, in the production process direction, a heating section, a forming section and a tempering section; the heating sector contains a furnace chamber, heating elements provided in the furnace chamber, and a group of ceramic transport rollers 11; and the plane consisting of generatrices on the ceramic transport rollers 11 is horizontal.

The molding sector mainly consists of a plurality of transport rollers 11; transport rollers 11 are synchronized to move glass with the same linear speed of the outer perimeter; the formed curved surface is adjacent to each outer perimeter of the transport rollers 11 in the aggregate.

The toughening sector can be realized by using a device for eliminating stress areas on the glass surface in any of embodiments 1-4.

Various other changes and variations may be made to those skilled in the art in accordance with the techniques and concepts described above, all of which are intended to fall within the scope of the claims of the present invention.

Claims (33)

1. A device for eliminating areas of stress on the glass surface, characterized in that it contains: a transport unit (10) provided with a transport surface for reciprocating transport of glass (40) in the transport direction; an upper blower unit (30) provided above the transport surface, used to direct air to flow back and forth over the transport surface in a swing direction extending in the width direction of the glass (40); And a lower blower unit (20) provided under the transport surface, used to direct air to flow back and forth under the transport surface in the swing direction; in this case, the transport unit (10) contains: transport support frame; a plurality of transport rollers (11) rotatably mounted on the transport support frame; And an arc-forming mechanism used to convert the supporting transport frame into an arc segment shape to form an arc segment shaped transport surface on the transport rollers (11). 2. Device according to claim 1, characterized in that the lower blower unit (20) contains: a plurality of air barrier support frames (22) connected to a transport support frame; a plurality of air barrier plates (21) rotatably mounted on the air barrier support frame (22) provided with a plurality of air blow holes used to direct air flow onto the transport surface; And a swing drive mechanism causing the air barrier plates (21) to swing back and forth in the swing direction. 3. The device according to claim 2, characterized in that the swing drive mechanism contains: a motor mounted on the air barrier support frame (22); And eccentric wheel (23), wherein the motor causes the eccentric wheel (23) to rotate, and the eccentric wheel (23) guides the air barrier plates (21) to swing during rotation. 4. The device according to claim 2, characterized in that the lower blower unit (20) additionally contains a lifting-lowering unit (24), causing the air barrier plates (21) to move closer to the transport surface or further from it. 5. Device according to any one of paragraphs. 2-4, characterized in that the upper blower unit (30) is identical in design to the lower blower unit (20). 6. Device according to any one of paragraphs. 2-4, characterized in that the arc-forming mechanism contains: a plurality of arc-forming plates (12); And a driving part of the arc-forming plates used to cause the arc-forming plates to rotate (12), wherein two adjacent arc-forming plates (12) are pivotally connected to each other, transport rollers (11) are pivotally connected to arc-forming plates (12), each support frame (22) of the air barrier is connected to each arc-forming plate (12) and two adjacent support frames (22) of the air barrier are connected by means of a universal joint (221). 7. Device according to claim 6, characterized in that the drive part of the arc-forming plates (12) contains: a sprocket (13) pivotally connected to the air barrier support frame (22); a sprocket shaft synchronously connected to the sprocket (13); And drive part of the sprocket shaft. 8. The device according to claim 1, characterized in that it additionally contains a heating sector; the heating sector contains a furnace chamber, heating elements provided in the furnace chamber, and a group of ceramic transport rollers (11); And the plane consisting of generatrices on ceramic transport rollers (11) is horizontal. 9. A method for eliminating areas of stress on the glass surface, carried out by a device according to any one of claims. 1-8, characterized in that it includes: a transporting step, wherein the glass (40) is transported between the upper blowing unit (30) and the lower blowing unit (20) by the transport unit (10) during the tempering and tempering period of the bent glass (40); a glass swinging stage, wherein the glass swings back and forth under the action of the transport unit (10) along the transport surface; And an air cooling stage, wherein the upper blower unit (30) carries out reciprocating blowing in the direction of the width of the upper surface of the glass (40), the lower blower unit (20) carries out reciprocating blowing in the direction of the width of the lower surface of the glass (40). 10. The method according to claim 9, characterized in that the direction of back-and-forth swinging of the glass (40) at the glass swinging stage alternates with the direction of back-and-forth blowing at the air cooling stage.