CN113135650A - Secondary heating forming method for automobile glass - Google Patents
Secondary heating forming method for automobile glass Download PDFInfo
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- CN113135650A CN113135650A CN202110320208.1A CN202110320208A CN113135650A CN 113135650 A CN113135650 A CN 113135650A CN 202110320208 A CN202110320208 A CN 202110320208A CN 113135650 A CN113135650 A CN 113135650A
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- glass
- heating
- automobile
- automobile glass
- hot bending
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The invention belongs to the technical field of automobile glass, and discloses a secondary heating forming method of automobile glass, which comprises the following steps: carrying out first hot bending treatment on the automobile glass; carrying out hot bending monitoring control on the automobile glass; carrying out second hot bending treatment on the automobile glass; and adjusting the uniformity, viscosity and liquid level of the semi-finished glass plate through adjusting equipment, and gradually cooling to obtain the finished automobile curved glass. The secondary heating forming method of the automobile glass provided by the invention effectively reduces the optical distortion of the glass through secondary heating, improves the optical performance of the glass, reduces the scrapped condition of the glass, improves the yield, and realizes that the surface of the glass is heated to the required bent shape at high temperature without contact. Meanwhile, the improved automobile glass hot bending forming die provided by the invention meets the requirements of the profile, goodness of fit, optics and other qualities and performances of a glass product with a large spherical surface, a large arch height and large side profile curvature change, and improves the yield.
Description
Technical Field
The invention belongs to the technical field of automobile glass, and particularly relates to a secondary heating forming method of automobile glass.
Background
At present, in the prior art of processing laminated glass for automobiles, it is sometimes desired to heat the automobile glass firstly and then perform a forming operation or any other suitable operation, and the following two methods are mainly adopted for heating the glass pairs with different characteristics: firstly, for large and small pieces with different characteristics, heating parameters are respectively adjusted according to the characteristics of the large and small pieces in the same conveying system to respectively heat, namely, the heating parameters of the large pieces are adjusted according to the characteristics of the large pieces, all the large pieces are intensively heated and then molded, then the heating parameters of the small pieces are adjusted according to the characteristics of the small pieces, and all the small pieces are intensively heated and then molded; secondly, by combining radiation heating and convection heating and setting the contour line of the relative time of the pressure applied by convection air according to different characteristics of the glass, two groups of glass plates with different characteristics are loaded on one conveying system alternately, and each group of glass plates are heated differently.
The method for producing the double-curved-surface automobile glass mainly comprises a self-weight forming method and a compression forming method, the demand of part of products with special shapes is continuously increased, and the requirement on the quality is increasingly strict. If carry out single horizontal heating bending of lying with car glass, because of the whole periphery portion of glass that is supported by annular mould of the weight of car glass, when glass heats to high temperature softening, just can't eliminate the trace of support contact point, at ordinary times because the front and back wind-shield and partial fixed door and window glass's all around are wrapped up with the adhesive tape and are not big to the impression of tooth, but to activity door and window glass and the higher car glass product influence of requirement great. Therefore, a new method for forming an automobile glass by secondary heating is needed.
Through the above analysis, the problems and defects of the prior art are as follows:
(1) in the prior processing technology of the laminated glass for the automobile, because a large sheet and a small sheet are heated separately, the matching degree of the large sheet and the small sheet is not high, and an opening is formed during matching;
(2) since the weight of the automobile glass is entirely supported by the annular mold around the glass, when the glass is heated to a high temperature and softened, the trace of the supporting contact point cannot be eliminated.
(3) The rubber strips are used for wrapping the peripheries of the front windshield, the rear windshield and part of the fixed door and window glass, so that the influence on the tooth marks is small, but the influence on the movable door and window glass and the automobile glass product with higher requirement is large.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a secondary heating forming method for automobile glass.
The invention is realized in such a way that the secondary heating forming method of the automobile glass comprises the following steps:
step one, carrying out first hot bending treatment on the automobile glass: placing glass plate blanks with the thickness of N millimeters in parallel on a heating platform in an automobile glass door and window furnace; horizontally placing and heating at high temperature, pressurizing at high temperature, and heating until the maximum curvature radius of the glass plate blank is 800-1000 mm so as to perform primary hot bending on the glass plate blank; placing the glass plate blank subjected to primary heating in an automobile glass vertical furnace, and performing high-temperature pressurization and heating in the vertical direction to obtain a semi-finished glass plate;
step two, performing hot bending monitoring control on the automobile glass: installing a hot bending monitoring device; in the hot bending processing process of the automobile glass, adjusting the Z-axis coordinate to be H through a camera carried by a hot bending monitoring device, recording X, Y-axis coordinates, and shooting the hot bending processing; processing the shot image by using a Digital Signal Processor (DSP), and calculating to obtain a deviation pixel value and an actual distance deviation value; transmitting the measured value to a receiving device through a wireless signal, transmitting the measured deviation value to an automobile glass door and window furnace and/or an automobile glass vertical furnace by the receiving device, correcting a processing program, and monitoring and controlling the hot bending processing process of the automobile glass in real time;
step three, carrying out second hot bending treatment on the automobile glass: placing the semi-finished glass plate in a mold, and carrying out molding heating on the semi-finished glass plate; and adjusting the uniformity, viscosity and liquid level of the semi-finished glass plate through adjusting equipment, and gradually cooling to obtain the finished automobile curved glass.
Further, in the step one, N is a natural number; and in the primary hot bending, the pressurizing pressure is 0.25-0.45 MPa, the heating temperature is 700-900 ℃, and the heating time T is Nx 40 seconds.
Further, in the first step, a plurality of ceramic rollers are arranged on a heating platform in the automobile glass door and window furnace at intervals in parallel, and the automobile glass is placed on a plane formed by the ceramic rollers.
Further, in the step one, when the semi-finished glass plate is prepared, the heating mode in the automobile glass vertical furnace is heating by an infrared heating pipe, the pressurizing pressure is 0.45-0.65 MPa, the heating temperature is 720-950 ℃, and the heating time T is Nx 50 seconds.
Further, in step two, the installation of the hot bending monitoring device includes:
(1) installing a camera on a main shaft through a tool system matched with the main shaft of the machine tool;
(2) operating the machine tool to move the camera to the original point of the machining program, namely right above the special measuring target, adjusting the Z-axis coordinate to be H, recording X, Y-axis coordinates, and shooting;
(3) after the installation is finished, the camera is adjusted to the specified position according to the coordinate value recorded during the first shooting, and the shooting is continued.
Furthermore, the special measuring target comprises a base, wherein a red light-emitting diode (LED) lamp tube and a reticle layer are arranged on the upper surface of the base, and a shading coating is coated on the surface of the reticle layer.
Further, in the second step, the processing the shot image by using the digital signal processor DSP includes:
(1) removing noise interference in an original image by adopting linear filtering, carrying out threshold segmentation on the image, and converting the original image into a binary image;
(2) performing edge detection on the binary image by adopting a Hough change method;
(3) and refining the edges by adopting a Canny refining algorithm, and respectively extracting coordinate values of the central points of the cross marks on an X, Y axis.
Further, in step two, the calculating to obtain the deviation pixel value and the actual distance deviation value includes:
recording coordinate values (a, b) of the central point of the displayed cross mark on an X, Y axis, setting the size of a shot image as C x D and the unit as a pixel, and calculating to obtain a deviation pixel value (delta x, delta y) as (a-C, b-D);
by means of a calibrated calculation formula S ═ Cal × N,
calculate the actual distance deviation value as
Further, in the third step, the mold for placing the glass is made of high-temperature-resistant and corrosion-resistant aluminum alloy material.
Furthermore, in the third step, the mold for placing the glass has different shapes, and is suitable for the glass with different shapes of the automobile.
By combining all the technical schemes, the invention has the advantages and positive effects that: according to the secondary heating forming method for the automobile glass, provided by the invention, the optical distortion of the glass is effectively reduced through secondary heating, the optical performance of the glass is improved, the scrapping condition of the glass is reduced, the yield is improved, and the purpose that the surface of the glass is heated to the required bent shape at high temperature without contact is realized. Meanwhile, the invention provides an improved automobile glass hot bending forming die which meets the requirements of the molded surface, goodness of fit, optics and other quality and performance of a glass product with a large spherical surface, a large arch height and large side profile curvature change and improves the yield.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method for forming an automobile glass by secondary heating according to an embodiment of the present invention.
FIG. 2 is a flowchart of a method for performing a first thermal bending process on automotive glass according to an embodiment of the present invention.
Fig. 3 is a flowchart of a method for monitoring and controlling the thermal bending of the glass of the automobile according to the embodiment of the invention.
Fig. 4 is a flowchart of a method for installing a hot bend monitoring device according to an embodiment of the present invention.
Fig. 5 is a flowchart of a method for processing a captured image by using a digital signal processor DSP according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to solve the problems in the prior art, the invention provides a secondary heating forming method for automobile glass, and the invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the method for secondarily heating and forming the automobile glass provided by the embodiment of the invention comprises the following steps:
s101, performing first hot bending treatment on the automobile glass;
s102, carrying out hot bending monitoring control on the automobile glass;
s103, performing second hot bending treatment on the automobile glass;
and S104, adjusting the uniformity, viscosity and liquid level of the semi-finished glass plate through adjusting equipment, and gradually cooling to obtain the finished automobile curved glass.
As shown in fig. 2, in step S101, the performing of the first thermal bending process on the automobile glass according to the embodiment of the present invention includes:
s201, placing a glass plate blank with the thickness of N millimeters in parallel on a heating platform in an automobile glass door and window furnace;
s202, horizontally placing and heating at a high temperature, pressurizing at a high temperature, and heating until the maximum curvature radius of the glass plate blank is 800-1000 mm so as to perform primary hot bending on the glass plate blank;
s203, placing the glass plate blank subjected to primary heating in an automobile glass vertical furnace, and performing high-temperature pressurization and heating in the vertical direction to obtain a semi-finished glass plate.
In step S201 provided in the embodiment of the present invention, N is a natural number.
In step S201 provided in the embodiment of the present invention, a plurality of ceramic rollers are disposed in parallel at intervals on a heating platform in the door or window of the automobile glass, and the automobile glass is placed on a plane formed by the plurality of ceramic rollers.
In step S202 provided in the embodiment of the present invention, during the first hot bending, the pressing pressure is 0.25 to 0.45MPa, the heating temperature is 700 to 900 ℃, and the heating time T is N × 40 seconds.
In step S203, when the semi-finished glass plate is prepared, the heating mode in the automobile glass vertical furnace is heating by an infrared heating tube, the pressurizing pressure is 0.45-0.65 MPa, the heating temperature is 720-950 ℃, and the heating time T is N × 50 seconds.
As shown in fig. 3, in step S102 provided in the embodiment of the present invention, the performing of the monitoring control on the thermal bending of the automobile glass includes:
s301, installing a hot bending monitoring device;
s302, in the process of hot bending treatment of the automobile glass, adjusting the Z-axis coordinate to be H through a camera carried by a hot bending monitoring device, recording X, Y-axis coordinates, and carrying out hot bending treatment shooting;
s303, processing the shot image by using a Digital Signal Processor (DSP), and calculating to obtain a deviation pixel value and an actual distance deviation value;
s304, transmitting the measured value to a receiving device through a wireless signal, transmitting the measured deviation value to an automobile glass door and window furnace and/or an automobile glass vertical furnace by the receiving device, correcting a processing program, and monitoring and controlling the hot bending processing process of the automobile glass in real time.
As shown in fig. 4, in step S301 provided in the embodiment of the present invention, the installing the thermal bend monitoring apparatus includes:
s401, mounting a camera on a main shaft through a tool system matched with the main shaft of the machine tool;
s402, operating the machine tool to move the camera to the original point of the machining program, namely right above the special measuring target, adjusting the Z-axis coordinate to be H, recording X, Y-axis coordinates, and shooting;
and S403, after the installation is finished, adjusting the camera to a specified position according to the coordinate value recorded in the first shooting, and continuing shooting.
In step S402 provided in the embodiment of the present invention, the special measurement target includes a base, the upper surface of the base is provided with a red light emitting diode LED lamp and a reticle layer, and the reticle layer surface is coated with a light-shielding coating.
As shown in fig. 5, in step S303, the processing the captured image by using the digital signal processor DSP according to the embodiment of the present invention includes:
s501, removing noise interference in an original image by adopting linear filtering, carrying out threshold segmentation on the image, and converting the original image into a binary image;
s502, edge detection is carried out on the binary image by adopting a Hough change method;
s503, refining the edges by adopting a Canny refining algorithm, and respectively extracting coordinate values of the central point of the cross mark on an X, Y axis.
In step S303 provided in the embodiment of the present invention, the calculating to obtain the deviation pixel value and the actual distance deviation value includes:
recording coordinate values (a, b) of the central point of the displayed cross mark on an X, Y axis, setting the size of a shot image as C x D and the unit as a pixel, and calculating to obtain a deviation pixel value (delta x, delta y) as (a-C, b-D);
by means of a calibrated calculation formula S ═ Cal × N,
calculate the actual distance deviation value as
In step S103 provided in the embodiment of the present invention, the performing the second hot bending process on the automobile glass includes: and placing the semi-finished glass plate in a mould, and carrying out molding heating on the semi-finished glass plate.
The mold for placing the glass provided by the embodiment of the invention is made of high-temperature-resistant and corrosion-resistant aluminum alloy material.
The mold for placing the glass provided by the embodiment of the invention has different shapes and is suitable for the glass with different shapes of automobiles.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The secondary heating forming method of the automobile glass is characterized by comprising the following steps of:
step one, carrying out first hot bending treatment on the automobile glass: placing glass plate blanks with the thickness of N millimeters in parallel on a heating platform in an automobile glass door and window furnace; horizontally placing and heating at high temperature, pressurizing at high temperature, and heating until the maximum curvature radius of the glass plate blank is 800-1000 mm so as to perform primary hot bending on the glass plate blank; placing the glass plate blank subjected to primary heating in an automobile glass vertical furnace, and performing high-temperature pressurization and heating in the vertical direction to obtain a semi-finished glass plate;
step two, performing hot bending monitoring control on the automobile glass: installing a hot bending monitoring device; in the hot bending processing process of the automobile glass, adjusting the Z-axis coordinate to be H through a camera carried by a hot bending monitoring device, recording X, Y-axis coordinates, and shooting the hot bending processing; processing the shot image by using a Digital Signal Processor (DSP), and calculating to obtain a deviation pixel value and an actual distance deviation value; transmitting the measured value to a receiving device through a wireless signal, transmitting the measured deviation value to an automobile glass door and window furnace and/or an automobile glass vertical furnace by the receiving device, correcting a processing program, and monitoring and controlling the hot bending processing process of the automobile glass in real time;
step three, carrying out second hot bending treatment on the automobile glass: placing the semi-finished glass plate in a mold, and carrying out molding heating on the semi-finished glass plate; and adjusting the uniformity, viscosity and liquid level of the semi-finished glass plate through adjusting equipment, and gradually cooling to obtain the finished automobile curved glass.
2. The method for secondarily heating and forming automobile glass according to claim 1, wherein in the first step, N is a natural number; and in the primary hot bending, the pressurizing pressure is 0.25-0.45 MPa, the heating temperature is 700-900 ℃, and the heating time T is Nx 40 seconds.
3. The method according to claim 1, wherein in the first step, a plurality of ceramic rollers are arranged in parallel and at intervals on a heating platform in the automobile glass door and window furnace, and the automobile glass is placed on a plane formed by the plurality of ceramic rollers.
4. The method for secondarily heating and forming automobile glass according to claim 1, wherein in the first step, the semi-finished glass sheet is prepared by heating with an infrared heating tube in the vertical automobile glass furnace, wherein the pressurizing pressure is 0.45 to 0.65MPa, the heating temperature is 720 to 950 ℃, and the heating time T is N x 50 seconds.
5. The method of claim 1, wherein in step two, said installing a hot bending monitor device comprises:
(1) installing a camera on a main shaft through a tool system matched with the main shaft of the machine tool;
(2) operating the machine tool to move the camera to the original point of the machining program, namely right above the special measuring target, adjusting the Z-axis coordinate to be H, recording X, Y-axis coordinates, and shooting;
(3) after the installation is finished, the camera is adjusted to the specified position according to the coordinate value recorded during the first shooting, and the shooting is continued.
6. The method as claimed in claim 5, wherein the target comprises a base, the upper surface of the base is provided with a red LED tube and a reticle layer, and the reticle layer is coated with a light-shielding coating.
7. The method for secondarily heating and forming automobile glass according to claim 1, wherein in the second step, the processing of the photographed image by using the digital signal processor DSP includes:
(1) removing noise interference in an original image by adopting linear filtering, carrying out threshold segmentation on the image, and converting the original image into a binary image;
(2) performing edge detection on the binary image by adopting a Hough change method;
(3) and refining the edges by adopting a Canny refining algorithm, and respectively extracting coordinate values of the central points of the cross marks on an X, Y axis.
8. The method for reheat forming of automotive glass as claimed in claim 1, wherein said step two, calculating a deviation pixel value and an actual distance deviation value, comprises:
recording coordinate values (a, b) of the central point of the displayed cross mark on an X, Y axis, setting the size of a shot image as C x D and the unit as a pixel, and calculating to obtain a deviation pixel value (delta x, delta y) as (a-C, b-D);
by means of a calibrated calculation formula S ═ Cal × N,
calculate the actual distance deviation value as
9. The method for secondarily heating and forming automobile glass according to claim 1, wherein in the third step, the mold for placing the glass is made of an aluminum alloy material resistant to high temperature and corrosion.
10. The method of claim 1, wherein in step three, the mold for placing the glass has different shapes, so as to adapt to the glass with different shapes of the automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110320208.1A CN113135650A (en) | 2021-03-25 | 2021-03-25 | Secondary heating forming method for automobile glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110320208.1A CN113135650A (en) | 2021-03-25 | 2021-03-25 | Secondary heating forming method for automobile glass |
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| CN113135650A true CN113135650A (en) | 2021-07-20 |
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| CN202110320208.1A Pending CN113135650A (en) | 2021-03-25 | 2021-03-25 | Secondary heating forming method for automobile glass |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114477738A (en) * | 2021-09-28 | 2022-05-13 | 新沂市铭达玻璃有限公司 | Thermal forming process for processing automobile glass |
| CN114835388A (en) * | 2022-05-11 | 2022-08-02 | 无锡威唐工业技术股份有限公司 | Automobile glass production system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179726A (en) * | 2011-03-24 | 2011-09-14 | 哈尔滨理工大学 | Instrument and method for measuring secondary clamping deviation during numerical control machining based on image technology |
| CN102295403A (en) * | 2010-06-25 | 2011-12-28 | 信义汽车玻璃(深圳)有限公司 | Secondary hot forming method of automobile glass |
| CN104860514A (en) * | 2015-05-19 | 2015-08-26 | 青岛元盛光学有限公司 | Production technology for hot bending of bent glass |
| CN106746524A (en) * | 2016-12-26 | 2017-05-31 | 江苏华尚汽车玻璃工业有限公司 | Post forming vehicle glass hot bending die |
| CN108996897A (en) * | 2018-06-30 | 2018-12-14 | 深圳市东方碳素实业有限公司 | A kind of method of hot bending automobile bend glass |
-
2021
- 2021-03-25 CN CN202110320208.1A patent/CN113135650A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295403A (en) * | 2010-06-25 | 2011-12-28 | 信义汽车玻璃(深圳)有限公司 | Secondary hot forming method of automobile glass |
| CN102179726A (en) * | 2011-03-24 | 2011-09-14 | 哈尔滨理工大学 | Instrument and method for measuring secondary clamping deviation during numerical control machining based on image technology |
| CN104860514A (en) * | 2015-05-19 | 2015-08-26 | 青岛元盛光学有限公司 | Production technology for hot bending of bent glass |
| CN106746524A (en) * | 2016-12-26 | 2017-05-31 | 江苏华尚汽车玻璃工业有限公司 | Post forming vehicle glass hot bending die |
| CN108996897A (en) * | 2018-06-30 | 2018-12-14 | 深圳市东方碳素实业有限公司 | A kind of method of hot bending automobile bend glass |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114477738A (en) * | 2021-09-28 | 2022-05-13 | 新沂市铭达玻璃有限公司 | Thermal forming process for processing automobile glass |
| CN114835388A (en) * | 2022-05-11 | 2022-08-02 | 无锡威唐工业技术股份有限公司 | Automobile glass production system |
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