CN112047616B - Vehicle glass bending device and vehicle glass bending method - Google Patents
Vehicle glass bending device and vehicle glass bending method Download PDFInfo
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- CN112047616B CN112047616B CN202010853537.8A CN202010853537A CN112047616B CN 112047616 B CN112047616 B CN 112047616B CN 202010853537 A CN202010853537 A CN 202010853537A CN 112047616 B CN112047616 B CN 112047616B
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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
- C03B23/025—Re-forming glass sheets by bending by gravity
- C03B23/0252—Re-forming glass sheets by bending by gravity by gravity only, e.g. sagging
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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
- C03B23/035—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending
- C03B23/0352—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending by suction or blowing out for providing the deformation force to bend the glass sheet
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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
- C03B23/035—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending
- C03B23/0352—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending by suction or blowing out for providing the deformation force to bend the glass sheet
- C03B23/0357—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending by suction or blowing out for providing the deformation force to bend the glass sheet by suction without blowing, e.g. with vacuum or by venturi effect
Abstract
The application provides a vehicle glass bending device and a vehicle glass bending method, the vehicle glass bending device comprises a concave bottom die and a plurality of air exhaust pipelines, the concave bottom die comprises a base and a top plate, the top plate covers the base and encloses with the base to form an accommodating space, a plurality of first partition plates are arranged in the accommodating space, and the accommodating space is divided into a plurality of subspaces by the first partition plates; the bearing surface of the top plate, which deviates from the base, is a concave surface, a plurality of through holes communicated with the accommodating space are arranged on the top plate at intervals, each subspace at least corresponds to one through hole, and the plurality of air exhaust pipelines are communicated with the plurality of subspaces one by one so as to exhaust air in the plurality of subspaces. The application provides a vehicle glass bending device is through setting up a plurality of subspaces and bleeding respectively for the glass surface corresponding with a plurality of subspaces receives the vacuum effect of different degrees, thereby adjusts the shape change of each position of glass, so that glass satisfies corresponding bending's structural requirement.
Description
Technical Field
The application relates to the technical field of glass processing, in particular to a vehicle glass bending device and a vehicle glass bending method.
Background
With the development of society, people can not leave automobiles when going out, the production capacity of automobiles is increased year by year, the demand of automobile glass is also increased year by year, and how to bend the glass to form the glass into a proper shape is a key point and a difficulty point in a glass processing technology.
When the traditional glass bending forming device for the vehicle is used for processing glass, the glass is influenced by the shape and the gravity distribution of the glass, and the glass is easy to generate an S-shaped or pan-shaped glass spherical surface, so that the forming requirement of the glass is not met. Therefore, a new glass bending device for vehicles is needed, which can adjust the shape change of each position of the glass, so that the glass can meet the structural requirements of corresponding bending.
Disclosure of Invention
The invention aims to provide a vehicle glass bending device and a vehicle glass bending method, which are used for a glass bending process and can adjust the shape change of each position of glass so that the glass meets the structural requirements of corresponding bending.
In order to achieve the purpose of the application, the application provides the following technical scheme:
in a first aspect, the application provides a vehicle glass bending device, which comprises a concave bottom die and a plurality of air exhaust pipelines, wherein the concave bottom die comprises a base and a top plate, the top plate covers the base and encloses with the base to form an accommodating space, a plurality of first partition plates are arranged in the accommodating space, and the accommodating space is divided into a plurality of subspaces by the first partition plates; the bearing surface that the roof deviates from the base is concave surface, the interval is provided with a plurality of intercommunications on the roof the through-hole of accommodation space, every the subspace corresponds one at least the through-hole, it is a plurality of bleed duct communicates with a plurality of the subspace one by one to it is a plurality of to bleed in the subspace.
The application provides a vehicle glass bending device is through separating the accommodation space for a plurality of subspaces to set up a plurality of bleed-off pipelines and a plurality of subspace intercommunication one by one, in order to bleed off in a plurality of subspaces, make the glass surface corresponding with a plurality of subspaces receive the vacuum effect of different degrees, thereby adjust the shape change of each position of glass, so that glass satisfies corresponding bending forming's structural requirement.
In one embodiment, the plurality of subspaces includes a central subspace corresponding to a central region of the ceiling, a sub-central subspace surrounding the central subspace, and a plurality of edge subspaces distributed around and collectively surrounding the sub-central subspace. The method comprises the steps of dividing a subspace in the glass bending forming device for the vehicle into a central subspace, a secondary central subspace and a plurality of edge subspaces, using air exhaust pipelines to respectively exhaust the central subspace, the secondary central subspace and the plurality of edge subspaces so as to adjust the vacuum action in each subspace corresponding to different area positions of glass, and enabling the vacuum action force applied to the glass at different area positions to be changed so as to adjust the shape of the glass and meet the structural requirements of corresponding bending forming.
In one embodiment, the edge subspaces include a big head subspace, a small head subspace, a first side subspace and a second side subspace, the big head subspace and the small head subspace are located on the two opposite sides of the secondary center subspace, the first side subspace and the second side subspace are located on the two opposite sides of the secondary center subspace, the area of the top plate corresponding to the big head subspace is a first area, the area of the top plate corresponding to the small head subspace is a second area, and the curvature radius of the first area is greater than that of the second area. The plurality of edge subspaces are divided into a large head subspace, a small head subspace, a first side subspace and a second side subspace so as to correspond to different area positions of the glass edge. The large head subspace, the small head subspace, the first side edge subspace and the second side edge subspace are respectively pumped, so that different area positions of the glass edge are subjected to corresponding vacuum acting forces, and the edge shape of the glass is adjusted more accurately.
In one embodiment, the glass bending apparatus further comprises a control for adjusting each of the pumping ducts such that the level of vacuum in each of the sub-spaces is adjustable. Due to the control piece, the air exhaust performance of the air exhaust pipeline can be effectively regulated and controlled, so that the vacuum action in each subspace is accurately regulated, and the shape of the glass at the position corresponding to each subspace is changed by the corresponding vacuum action force, so that the structural requirement of corresponding bending forming is met.
In one embodiment, automobile-used glass bending device still includes cyclic annular top mould, cyclic annular top mould is located the roof deviates from one side of base, cyclic annular top mould includes the cope match-plate pattern and sets up on the cope match-plate pattern and towards the side bolster of loading end one side, the cope match-plate pattern with the side bolster encloses to close and forms and holds the chamber, it is equipped with the passageway of blowing to hold the intracavity, the passageway orientation of blowing the loading end is used for right glass blows. The air blowing channel on the annular top die is used for blowing air to the upper surface of the glass, so that the lower surface of the glass is under the action of vacuum acting force, and the upper surface of the glass is under the action of air blowing pressure, so that the glass can achieve the effect of rapid bending forming. And when the automotive glass bending forming device simultaneously comprises the concave bottom die and the annular top die, a plurality of pieces of glass which are arranged in a stacked mode can be simultaneously processed, and the processing process efficiency is improved to a certain extent.
In one embodiment, it is equipped with a plurality of second baffles, a plurality of to hold the intracavity the second baffle will hold the chamber and separate for a plurality of subspaces and hold the chamber, it is a plurality of the subspaces hold the chamber respectively for central subspaces hold chamber and a plurality of edge subspaces, central subspaces hold the chamber, with central subspace reaches inferior central subspace sets up relatively, a plurality of edge subspaces hold the chamber respectively with first side subspace second side subspace big head subspace with little head subspace sets up relatively one by one, the quantity of the passageway of blowing has a plurality ofly, and every the subspaces all are equipped with at least one in the chamber the passageway of blowing. The multiple sub-containing cavities are divided into a central sub-containing cavity and multiple edge sub-containing cavities to correspond to the central area position and the edge area position of the glass, air blowing channels are arranged in the central sub-containing cavity and the multiple edge sub-containing cavities to blow the glass at corresponding positions, so that air blowing pressure is applied to the surface of the glass, and the shape change of the glass is adjusted to enable the glass to meet the structural requirements of corresponding bending forming. And, a plurality of sub-accommodation cavities set up with a plurality of subspaces respectively relatively for each regional position of glass can receive corresponding vacuum effort and gas blowing pressure, thereby more be favorable to carrying out double adjustment to the shaping shape of glass.
In one embodiment, the central sub-receiving cavity includes a first central sub-receiving cavity and a second central sub-receiving cavity, the first central sub-receiving cavity is disposed opposite to the central sub-space, the second central sub-receiving cavity is disposed opposite to the sub-central sub-space, and at least one of the blowing channels is disposed in each of the first central sub-receiving cavity and the second central sub-receiving cavity. The central sub-containing cavity is divided into a first central sub-containing cavity and a second central sub-containing cavity to correspond to the central subspace and the secondary central subspace, so that the shape of the central area of the glass can be adjusted more accurately.
In one embodiment, the blowing power, the blowing opening time and the blowing duration of the blowing channel are adjustable. By adjusting the blowing power, the blowing starting time and the blowing duration of each blowing channel, the blowing pressure generated by each sub-containing cavity through the blowing channel can be effectively regulated and controlled, so that the shape of the glass at the position corresponding to each sub-containing cavity can be adjusted, and the glass can meet the structural requirements of corresponding bending forming.
In one embodiment, the vehicle glass bending apparatus further includes a preformed frame, the preformed frame is an annular frame structure, the preformed frame can be sleeved on the periphery of the concave bottom die, and the curvature radius of the preformed frame is greater than that of the concave bottom die. The pre-forming frame is used for the pre-forming process of glass, the glass heated to the forming temperature is placed on the pre-forming frame, the glass is pre-formed under the action of gravity, and then the pre-forming frame is sleeved with the periphery of the concave bottom die from top to bottom so as to place the glass on the concave bottom die for secondary forming.
In one embodiment, the number of the glass layers is at least one, and when the number of the glass layers is more than one, a plurality of the glass layers are laminated on the bearing surface. When a plurality of glasses are laminated on the bearing surface of the concave bottom die, the glass bending forming device for the vehicle can be used for simultaneously processing the plurality of glasses, so that the processing process efficiency is improved.
In a second aspect, the present application also provides a method for bending and forming a glass for a vehicle, including:
providing a vehicle glass bending forming device, wherein the vehicle glass bending forming device comprises a concave bottom die and a plurality of air exhaust pipelines, the concave bottom die comprises a base and a top plate, the top plate covers the base and forms an accommodating space with the base in an enclosing manner, the bearing surface of the top plate, which is far away from the base, is an irregular concave surface, the bearing surface is used for bearing glass, a plurality of through holes are arranged on the top plate at intervals, a plurality of first partition plates are arranged in the accommodating space, the accommodating space is divided into a plurality of subspaces by the first partition plates, each subspace is communicated with at least one through hole, and the air exhaust pipelines are communicated with the subspaces one by one;
placing the glass heated to the forming temperature on the bearing surface, wherein the glass is deformed under the action of gravity;
and using the plurality of air exhaust pipelines to exhaust the plurality of subspaces so as to ensure that the glass is completely attached to the bearing surface.
The method for bending and forming the vehicle glass is used for processing the glass, and can effectively adjust the shape change of each position of the glass so that the glass meets the structural requirements of corresponding bending and forming.
In one embodiment, the plurality of subspaces includes a central subspace corresponding to a central region of the top plate, a sub-central subspace surrounding the central subspace, and a plurality of edge subspaces distributed around the sub-central subspace and collectively surrounding the sub-central subspace, and the pumping patterns between the pumping ducts communicating with the central subspace, the sub-central subspace, and the plurality of edge subspaces are different.
In one embodiment, the edge subspace includes a big head subspace, a small head subspace, a first side subspace and a second side subspace, the big head subspace and the small head subspace are located on the opposite sides of the secondary center subspace, the first side subspace and the second side subspace is located on the opposite sides of the secondary center subspace, and the big head subspace and the small head subspace are communicated with each other the air exhaust mode of the air exhaust pipeline is a first mode, and the first side subspace and the second side subspace are communicated with each other the air exhaust mode of the air exhaust pipeline is a second mode, and the first mode and the second mode are different.
Through carrying out the not same mode to bleeding to a plurality of subspaces for glass with different subspaces correspondence position receives different vacuum effort, thereby adjusts the deformation of each regional position of glass, so that glass satisfies corresponding bending forming's structural requirement.
In one embodiment, said evacuating said plurality of subspaces using said plurality of evacuation conduits to fully conform said glass to said load-bearing surface comprises:
and adjusting the air exhaust power, the air exhaust opening time and the air exhaust duration of each air exhaust pipeline so as to respectively adjust the vacuum action in each subspace.
Through adjusting the air exhaust performance of each air exhaust pipeline, thereby accurately adjusting the vacuum action in each subspace, and the glass at the position corresponding to each subspace is subjected to corresponding vacuum action force to change the shape so as to meet the structural requirement of corresponding bending forming.
In one embodiment, the adjusting the pumping power, pumping on time and pumping duration of each pumping duct to adjust the vacuum action in each sub-space comprises:
the regulation with the pumping duct that the center subspace is linked together adopts first bleed power, with the pumping duct that big head subspace with little head subspace is linked together adopts second bleed power, with the pumping duct that inferior center subspace is linked together adopts third bleed power, with the pumping duct that first side subspace with second side subspace is linked together adopts fourth bleed power, first bleed power second bleed power third bleed power with the power size of fourth bleed power reduces in proper order. The size of the vacuum acting force applied to the glass at the corresponding position of each subspace is adjusted by adjusting the air exhaust power of the air exhaust pipeline, so that the shape of the glass is changed, and the structural requirements of corresponding bending forming are met.
In one embodiment, the adjusting the pumping power, pumping on time and pumping duration of each pumping duct to adjust the vacuum action in each sub-space comprises:
adjusting the air exhaust opening time of an air exhaust pipeline communicated with the central subspace to be first time, the air exhaust opening time of an air exhaust pipeline communicated with the big head subspace and the small head subspace to be second time, the air exhaust opening time of an air exhaust pipeline communicated with the secondary central subspace to be third time, the air exhaust opening time of an air exhaust pipeline communicated with the first side subspace and the second side subspace to be fourth time, and sequentially pushing back the time sequence of the first time, the second time, the third time and the fourth time. The opening time of the air exhaust pipeline is adjusted to adjust the time of the vacuum acting force on the glass at the corresponding position of each subspace, so that the shape of the glass is changed to meet the structural requirement of corresponding bending forming.
In one embodiment, the adjusting the pumping power, pumping on time and pumping duration of each pumping duct to adjust the vacuum action in each sub-space comprises:
adjust with it is first time length during pumping of the pumping pipeline that the center subspace is linked together, with big head subspace with pumping pipeline that the microcephaly subspace is linked together is long for the second during pumping, with time center subspace is linked together pumping pipeline's pumping is long for the third during long, with first side subspace with pumping pipeline's that second side subspace is linked together is long for the fourth during long, first time length the second is long the third is long with the duration length of time length of fourth reduces in proper order. The air exhaust duration of the air exhaust pipeline is adjusted to adjust the time length of the vacuum acting force on the glass at the corresponding position of each subspace, so that the shape of the glass is changed to meet the structural requirement of corresponding bending forming.
In one embodiment, the adjusting the pumping power, pumping on time and pumping duration of each pumping duct to adjust the vacuum action in each sub-space comprises:
adjusting the pumping power of pumping pipelines communicated with the central subspace, the large head subspace, the small head subspace, the secondary central subspace, the first side edge subspace and the second side edge subspace to be reduced in sequence;
adjusting the air exhaust opening time of air exhaust pipelines communicated with the central subspace, the large head subspace, the small head subspace, the secondary central subspace, the first side edge subspace and the second side edge subspace to be sequentially pushed back;
the air pumping duration of the air pumping pipeline communicated with the central subspace, the big head subspace, the small head subspace, the secondary central subspace, the first side edge subspace and the second side edge subspace is adjusted to be reduced in sequence.
And meanwhile, the air exhaust power, the air exhaust opening time and the air exhaust duration of the air exhaust pipeline are adjusted, so that the shape change of each area position of the glass can be adjusted more systematically, and the glass can meet the structural requirements of corresponding bending forming.
In one embodiment, the adjusting the pumping power, pumping on time and pumping duration of each pumping duct to adjust the vacuum action in each sub-space comprises:
when at least one of the central subspace, the large head subspace, the small head subspace, the secondary central subspace, the first side subspace and the second side subspace is jointed or closely jointed with the bearing surface, the air exhaust pipeline communicated with the corresponding subspaces is closed. When the surface of the glass corresponding to one sub-space is attached or nearly attached to the bearing surface, the air exhaust pipeline communicated with the corresponding sub-space can be closed, the shape change of the glass is indirectly adjusted through the air exhaust function of the air exhaust pipeline in the adjacent sub-space, and the phenomenon that the glass and the bearing surface are excessively extruded due to continuous air exhaust is avoided.
In one embodiment, automobile-used glass bending device still includes cyclic annular top mould, cyclic annular top mould is located the roof deviates from one side of base, cyclic annular top mould includes the cope match-plate pattern and sets up on the cope match-plate pattern and towards the side bolster of loading end one side, the cope match-plate pattern with the side bolster encloses to close and forms and holds the chamber, it is equipped with the passageway of blowing to hold the intracavity, the passageway orientation of blowing the loading end is right glass blows. The upper surface of the glass is blown by the blowing channel on the annular top die, so that the lower surface of the glass is under the action of vacuum acting force, and the upper surface of the glass is under the action of blowing pressure, so that the glass can achieve the effect of rapid bending forming. And when the concave bottom die and the annular top die are used simultaneously, a plurality of pieces of glass which are arranged in a stacked mode can be processed simultaneously, and the processing process efficiency is improved to a certain extent.
In one embodiment, a plurality of second partition plates are arranged in the accommodating cavity, the accommodating cavity is divided into a plurality of sub-accommodating cavities by the plurality of second partition plates, the plurality of sub-accommodating cavities are respectively arranged opposite to the plurality of subspaces one by one, the number of the air blowing channels is multiple, and one air blowing channel is arranged in each sub-accommodating cavity; and adjusting the blowing power, the blowing starting time and the blowing duration of the blowing channels to ensure that the glass is subjected to blowing pressure of different degrees relative to different parts of the sub-containing cavities. The plurality of sub-containing cavities are respectively arranged opposite to the plurality of subspaces, so that each region of the glass can be subjected to corresponding vacuum acting force and blowing pressure, and double adjustment of the forming shape of the glass is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a preformed glass structure;
FIG. 2 is a schematic view of a glass structure meeting the corresponding bending requirements;
FIG. 3 is a schematic structural view of a bending apparatus for a vehicle glass in an embodiment;
FIG. 4 is a schematic sectional view of a concave bottom mold according to an embodiment;
FIG. 5 is a schematic top view of a concave bottom mold according to an embodiment;
FIG. 6 is a schematic view showing a connection structure of the concave bottom mold and the pre-form frame according to an embodiment;
FIG. 7 is a schematic structural view of a bending apparatus for vehicular glass in another embodiment;
FIG. 8 is a schematic structural view of an annular top mold in one embodiment;
FIG. 9 is a schematic view showing an internal structure of a ring-shaped top mold in one embodiment;
FIG. 10 is a schematic structural view of a bending apparatus for vehicular glass in another embodiment;
FIG. 11 is a schematic structural view of an annular top mold in another embodiment;
FIG. 12 is a schematic view showing the distribution of sub-receiving cavities of the annular top mold in another embodiment;
FIG. 13 is a schematic view showing the distribution of sub-receiving cavities of the annular top mold in another embodiment;
FIG. 14 is a schematic flow chart illustrating a method for bending a glass sheet for a vehicle according to an embodiment.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.
Referring first to fig. 1 and 2, fig. 1 is a schematic structural diagram of a preformed glass 900;
fig. 2 is a schematic view of a glass 900 meeting the corresponding bending requirements.
As shown in fig. 1, the glass 900 heated to the forming temperature is subject to gravity to perform the pre-forming process, and due to the shape of different positions of the glass 900 and the gravity distribution, the pre-formed glass 900 is likely to generate the spherical surface of the "S" or "pan" type glass 900, thereby not meeting the forming requirements of the glass 900.
Therefore, the embodiment of the present application provides a glass bending apparatus for a vehicle, which is used for performing a secondary bending process on a glass 900, as shown in fig. 2, so that the shapes of different positions of the glass 900 are all consistent with a desired shape, that is, the falling depth of the surface of the glass 900 is the same as the desired curvature difference, so as to meet the structural requirements of the corresponding bending process.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a vehicle glass bending apparatus 1000 according to an embodiment.
The embodiment of the application provides a vehicle glass bending device 1000, which comprises a concave bottom die 100 and a plurality of air exhaust pipelines 200, wherein the concave bottom die 100 comprises a base 10 and a top plate 20, the top plate 20 covers the base 10 and encloses with the base 10 to form an accommodating space 30, a plurality of first partition plates 40 are arranged in the accommodating space 30, and the accommodating space 30 is divided into a plurality of subspaces 31 by the plurality of first partition plates 40; the bearing surface 21 of the top plate 20 departing from the base 10 is a concave surface, a plurality of through holes 22 communicated with the accommodating space 30 are arranged on the top plate 20 at intervals, each subspace 31 at least corresponds to one through hole 22, and the plurality of air exhaust pipelines 200 are communicated with the plurality of subspaces 31 one by one so as to exhaust air in the plurality of subspaces 31.
The bearing surface 21 is used for bearing the glass 900, and the shape of the bearing surface 21 is the same as the desired shape, that is, when the surface of the glass 900 completely fits the bearing surface 21, the shape of the glass 900 is consistent with the desired shape, so that the glass 900 can meet the requirement of corresponding bending forming.
The top plate 20 is provided with a plurality of through holes 22 at intervals, and each sub-space 31 corresponds to at least one through hole 22. Therefore, when each sub-space 31 is evacuated, the vacuum action generated in each sub-space 31 directly acts on the surface of the glass 900, so that the glass 900 is affected by the vacuum action and changes its shape. It can be understood that the distribution positions of the subspaces 31 correspond to different positions of the glass 900, so that the shape change of the positions of the glass 900 can be adjusted, and the shape of the positions of the glass 900 is consistent with the expected shape, so as to meet the structural requirements of the corresponding bending forming.
Wherein, there is at least one glass 900, and when the number of the glass 900 is more than one, a plurality of glass 900 are laminated on the bearing surface 21. When a plurality of glasses 900 are stacked on the receiving surface 21 of the concave bottom mold 100, the glass bending apparatus 1000 for vehicle can be used to simultaneously process the plurality of glasses 900, so as to improve the processing efficiency.
The vehicular glass bending device 1000 provided by the embodiment of the application divides the accommodating space 30 into the plurality of subspaces 31, and the plurality of air exhaust pipelines 200 and the plurality of subspaces 31 are communicated one by one to exhaust air in the plurality of subspaces 31, so that the surfaces of the glass 900 corresponding to the plurality of subspaces 31 are subjected to vacuum action of different degrees, and the shape change of each position of the glass 900 is adjusted, so that the glass 900 meets the structural requirement of corresponding bending forming.
Referring to fig. 4 and 5, fig. 4 is a sectional view of a concave bottom mold 100 according to an embodiment;
fig. 5 is a top view of the concave bottom die 100 according to an embodiment.
In one embodiment, the plurality of subspaces 31 includes a central subspace 311, a sub-central subspace 312, and a plurality of edge subspaces 31, wherein the central subspace 311 corresponds to a central region of the top plate 20, the sub-central subspace 312 surrounds the central subspace 311, and the plurality of edge subspaces 31 are distributed around the sub-central subspace 312 and collectively surround the sub-central subspace 312. The subspace 31 in the glass bending apparatus 1000 for a vehicle is divided into a central subspace 311, a sub-central subspace 312 and a plurality of edge subspaces 31, so as to correspond to different region positions of the glass 900, the central subspace 311, the sub-central subspace 312 and the plurality of edge subspaces 31 are respectively evacuated by using the evacuation pipeline 200, so as to adjust the vacuum action in each subspace 31, thereby changing the vacuum action force applied to the glass 900 at different region positions, so as to adjust the shape of the glass 900, and make it meet the structural requirements of corresponding bending molding.
In one embodiment, the plurality of edge subspaces 31 includes a big head subspace 313, a small head subspace 314, a first side subspace 315 and a second side subspace 316, the big head subspace 313 and the small head subspace 314 are located on opposite sides of the sub-center subspace 312, the first side subspace 315 and the second side subspace 316 are located on opposite sides of the sub-center subspace 312, an area of the top plate 20 corresponding to the big head subspace 313 is a first area, an area of the top plate 20 corresponding to the small head subspace 314 is a second area, and a radius of curvature of the first area is greater than a radius of curvature of the second area. The plurality of edge subspaces 31 are divided into a large head subspace 313, a small head subspace 314, a first side subspace 315, and a second side subspace 316 to correspond to different region locations of the edge of glass 900. The large head subspace 313, the small head subspace 314, the first side subspace 315 and the second side subspace 316 are respectively pumped, so that different area positions of the edge of the glass 900 are subjected to corresponding vacuum acting forces, and the edge shape of the glass 900 is more accurately adjusted.
It can be understood that the central subspace 311, the sub-central subspace 312, the large head subspace 313, the small head subspace 314, the first side subspace 315 and the second side subspace 316 respectively correspond to different positions of the glass 900, and the vacuum acting force generated by the air suction of the air suction pipeline 200 in the plurality of subspaces 31 acts on the glass 900 to adjust the shape of the different positions of the glass 900. The division of the positions of the plurality of subspaces 31 is determined based on the positions of the regions where the glass 900 has different shape changes after preforming. In a specific embodiment, the region of the glass 900 that is most difficult to mold and has the largest difference between the spherical surface and the desired curvature after the pre-molding is located opposite to the central subspace 311; the area position of the second difficult-to-form pre-formed spherical surface in the glass 900, which has the second largest difference between the expected curvature, is opposite to the large head subspace 313 and the small head subspace 314; the third difficult-to-mold, preformed spherical surface and the third large difference of the expected curvature in the glass 900 are arranged opposite to the sub-center subspace 312; the region of the glass 900 that is most easily shaped and has the smallest difference between the spherical surface and the desired curvature after the pre-forming is located opposite the first side subspace 315 and the second side subspace 316.
Since the glass 900 at the corresponding positions of the different subspaces 31 has different differences between the shapes and the desired shapes after the glass 900 is preformed, the air exhaust performance of the plurality of air exhaust pipelines 200 communicated with the respective subspaces 31 needs to be adjusted to adjust the vacuum action in the respective subspaces 31, so that the glass 900 at the different corresponding positions is subjected to different vacuum acting forces, and the shapes of the glass 900 at the respective positions are adjusted to be the same as the desired shapes, that is, the glass 900 meets the structural requirements of the corresponding bending molding.
In one embodiment, the glass bending apparatus 1000 further comprises a control member (not shown) by which each of the evacuation ducts 200 is adjusted so that the vacuum effect in each of the sub-spaces 31 is adjustable. Due to the existence of the control part, the air exhaust performance of the air exhaust pipeline 200 can be effectively regulated and controlled, so that the vacuum action in each subspace 31 is accurately regulated, and the shape of the glass 900 at the position corresponding to each subspace 31 is changed by the corresponding vacuum action force, so as to meet the structural requirement of corresponding bending forming.
Referring to fig. 6, fig. 6 is a schematic view illustrating a connection structure between the concave bottom mold 100 and the pre-mold frame 300 according to an embodiment.
In one embodiment, the glass bending apparatus 1000 for vehicle further includes a pre-forming frame 300, the pre-forming frame 300 is a ring-shaped frame structure, the pre-forming frame 300 can be sleeved on the periphery of the concave bottom mold 100, and the curvature radius of the pre-forming frame 300 is greater than the curvature radius of the concave bottom mold 100. The pre-forming frame 300 is used for the pre-forming process of the glass 900, the glass 900 heated to the forming temperature is placed on the pre-forming frame 300, the glass 900 is pre-formed under the action of gravity, and then the pre-forming frame 300 is sleeved on the periphery of the concave bottom die 100 from top to bottom so as to place the glass 900 on the concave bottom die 100 for secondary forming. It can be appreciated that the existence of the preform frame 300 enables the preform process and the post-forming process to be performed consecutively, the forming temperature of the glass 900 is ensured, and the processing efficiency is improved.
Referring to fig. 7, 8 and 9, fig. 7 is a schematic structural diagram of a vehicle glass bending apparatus 1000 according to another embodiment;
FIG. 8 is a schematic diagram of the structure of the annular top mold 400 in one embodiment;
fig. 9 is a schematic view of the internal structure of the annular top mold 400 according to an embodiment.
In one embodiment, the vehicular glass bending apparatus 1000 further includes an annular top mold 400, the annular top mold 400 is disposed on a side of the top plate 20 away from the base 10, the annular top mold 400 includes a top mold plate 50 and a side mold plate 60 disposed on the top mold plate 50 and facing a side of the bearing surface 21, the top mold plate 50 and the side mold plate 60 enclose to form a receiving cavity 70, an air blowing channel 500 is disposed in the receiving cavity 70, and the air blowing channel 500 faces the bearing surface 21 and blows air to the glass 900. The air blowing channel 500 on the annular top mold 400 is used for air blowing treatment on the upper surface of the glass 900, so that the lower surface of the glass 900 is acted by vacuum force, and the upper surface of the glass is acted by air blowing pressure force, so that the glass 900 can achieve the effect of rapid bending forming. Further, when the glass bending apparatus 1000 for a vehicle includes both the concave bottom mold 100 and the annular top mold 400, a plurality of stacked glasses 900 can be simultaneously processed, and the processing efficiency is improved to some extent.
A gap is provided between the ring-shaped top mold 400 and the concave bottom mold 100, the glass 900 to be processed is placed in the gap, and the lower surface of the ring-shaped top mold 400 has the same curvature as the desired curvature of the corresponding region of the peripheral upper surface of the glass 900. Under the structure, the annular top die 400 is tightly attached to the glass 900, so that the problem of air leakage of the annular top die 400 in the secondary forming process of the glass 900 is solved. In a specific embodiment, the width of the contact surface between the annular top mold 400 and the periphery of the glass 900 is in the range of 0.5-25 cm, and the material of the annular top mold 400 may be metal, ceramic material, or any other material meeting the corresponding requirement, and is not limited specifically herein.
Referring to fig. 10, 11 and 12, fig. 10 is a schematic structural view of a vehicular glass bending apparatus 1000 according to another embodiment;
FIG. 11 is a schematic view of an annular top mold 400 according to another embodiment;
fig. 12 is a schematic distribution diagram of the sub-receiving cavities 71 of the annular top mold 400 in another embodiment.
In one embodiment, a plurality of second partition plates 80 are disposed in the accommodating cavity 70, the accommodating cavity 70 is divided into a plurality of sub-accommodating cavities 71 by the plurality of second partition plates 80, the plurality of sub-accommodating cavities 71 are respectively a central sub-accommodating cavity 711 and a plurality of edge sub-accommodating cavities 712, the central sub-accommodating cavity 711 is disposed opposite to the central sub-space 311 and the sub-central sub-space 312, the plurality of edge sub-accommodating cavities 712 are disposed opposite to the first side sub-space 315, the second side sub-space 316, the large head sub-space 313 and the small head sub-space 314 one by one, the number of the air blowing channels 500 is plural, and at least one air blowing channel 500 is disposed in each sub-accommodating cavity 71. The sub-receiving cavities 71 are divided into a central sub-receiving cavity 711 and a plurality of edge sub-receiving cavities 712 so as to correspond to the central region position and the edge region position of the glass 900, and the glass 900 at the corresponding position is blown by arranging the blowing channels 500 in the central sub-receiving cavity 711 and the plurality of edge sub-receiving cavities 712, so that the blowing pressure is applied to the surface of the glass 900, and the shape change of the glass 900 is adjusted, so that the glass 900 meets the structural requirements of the corresponding bending forming. Moreover, the sub-accommodating cavities 71 are respectively arranged opposite to the sub-spaces 31, so that the positions of the regions of the glass 900 can be subjected to corresponding vacuum acting force and blowing pressure, and the double adjustment of the forming shape of the glass 900 is facilitated.
In one embodiment, the blowing power, the blowing on time, and the blowing duration of the blowing channel 500 are adjustable. By adjusting the blowing power, the blowing starting time and the blowing duration of each blowing channel 500, the blowing pressure generated by each sub-containing cavity 71 through the blowing channel 500 can be effectively regulated and controlled, so that the shape of the glass 900 at the position corresponding to each sub-containing cavity 71 can be adjusted, and the glass 900 can meet the structural requirements of corresponding bending molding.
Referring to fig. 13, fig. 13 is a schematic distribution diagram of the sub-receiving cavities 71 of the annular top mold 400 according to another embodiment.
In one embodiment, the central sub-receiving cavity 711 includes a first central sub-receiving cavity 7111 and a second central sub-receiving cavity 7112, the first central sub-receiving cavity 7111 is disposed opposite the central sub-space 311, the second central sub-receiving cavity 7112 is disposed opposite the sub-central sub-space 312, and at least one air blowing channel 500 is disposed in each of the first central sub-receiving cavity 7111 and the second central sub-receiving cavity 7112. The center sub-receiving cavity 711 is divided into a first center sub-receiving cavity 7111 and a second center sub-receiving cavity 7112 to correspond to the center subspace 311 and the sub-center subspace 312, so that the shape of the center region position of the glass 900 can be more precisely adjusted.
Referring to fig. 14, fig. 14 is a schematic flow chart illustrating a method for bending and forming a vehicle glass according to an embodiment.
The embodiment of the application provides a vehicle glass bending method, which comprises the following steps:
s1, providing a vehicle glass bending forming device, wherein the vehicle glass bending forming device comprises a concave bottom die and a plurality of air exhaust pipelines, the concave bottom die comprises a base and a top plate, the top plate covers the base and forms an accommodating space with the base in an enclosing manner, the bearing surface of the top plate, which is far away from the base, is an irregular concave surface and is used for bearing glass, a plurality of through holes are formed in the top plate at intervals, a plurality of first partition plates are arranged in the accommodating space, the accommodating space is divided into a plurality of subspaces by the first partition plates, each subspace is communicated with at least one through hole, and the air exhaust pipelines are communicated with the subspaces one by one;
s2, placing the glass heated to the forming temperature on a bearing surface, and enabling the glass to deform under the action of gravity;
and S3, using a plurality of air exhaust pipelines to exhaust the plurality of subspaces so as to enable the glass to be completely attached to the bearing surface.
The method for bending and forming the vehicle glass is used for processing the glass, and can effectively adjust the shape change of each position of the glass so that the glass meets the structural requirements of corresponding bending and forming.
In a specific embodiment, the shape change of each position of the glass is adjusted, so that each position of the glass is simultaneously or nearly simultaneously molded and attached to the bearing surface, and the glass can meet the structural requirements of corresponding bending molding, in this case, the large spherical and complex glass product with high precision can be obtained, and any visible optical defects can be avoided.
In one embodiment, the plurality of subspaces includes a central subspace corresponding to a central region of the top plate, a sub-central subspace surrounding the central subspace, and a plurality of edge subspaces distributed around the sub-central subspace and collectively surrounding the sub-central subspace, and the pumping patterns between the pumping lines communicating with the central subspace, the sub-central subspace, and the plurality of edge subspaces are different.
In the embodiment, the plurality of edge subspaces comprise a big head subspace, a small head subspace, a first side subspace and a second side subspace, the big head subspace and the small head subspace are located on the two sides of the secondary center subspace, the first side subspace and the second side subspace are located on the two sides of the secondary center subspace, the air exhaust mode of an air exhaust pipeline communicated with the big head subspace and the small head subspace is a first mode, the air exhaust mode of the air exhaust pipeline communicated with the first side subspace and the second side subspace is a second mode, and the first mode and the second mode are different.
Through carrying out the not same mode to bleeding to a plurality of subspaces for glass with different subspaces correspondence position receives different vacuum effort, thereby adjusts the deformation of each regional position of glass, so that glass satisfies corresponding bending forming's structural requirement.
In one embodiment, evacuating the plurality of sub-spaces using a plurality of evacuation ducts to fully conform the glass to the support surface comprises:
and adjusting the air exhaust power, the air exhaust opening time and the air exhaust duration of each air exhaust pipeline so as to respectively adjust the vacuum action in each subspace.
Through adjusting the air exhaust performance of each air exhaust pipeline, thereby accurately adjusting the vacuum action in each subspace, and the glass at the position corresponding to each subspace is subjected to corresponding vacuum action force to change the shape so as to meet the structural requirement of corresponding bending forming.
In one embodiment, adjusting the pumping power, pumping on time, and pumping duration of each pumping duct to adjust the vacuum in each sub-space comprises:
the regulation adopts first air exhaust power with the air exhaust pipeline that central subspace is linked together, and the air exhaust pipeline that is linked together with big head subspace and little head subspace adopts second air exhaust power, and the air exhaust pipeline that is linked together with inferior central subspace adopts third air exhaust power, and the air exhaust pipeline that is linked together with first side subspace and second side subspace adopts fourth air exhaust power, and the power size of first air exhaust power, second air exhaust power, third air exhaust power and fourth air exhaust power reduces in proper order. The size of the vacuum acting force applied to the glass at the corresponding position of each subspace is adjusted by adjusting the air exhaust power of the air exhaust pipeline, so that the shape of the glass is changed, and the structural requirements of corresponding bending forming are met.
In one embodiment, adjusting the pumping power, pumping on time, and pumping duration of each pumping duct to adjust the vacuum in each sub-space comprises:
the time sequence of adjusting the opening time of bleeding of the pumping duct that is linked together with the center subspace is the first time, the opening time of bleeding of the pumping duct that is linked together with big head subspace and little head subspace is the second time, the opening time of bleeding of the pumping duct that is linked together with inferior center subspace is the third time, the opening time of bleeding of the pumping duct that is linked together with first side subspace and second side subspace is the fourth time, the first time, the second time, the third time and the fourth time are pushed back in proper order. The opening time of the air exhaust pipeline is adjusted to adjust the time of the vacuum acting force on the glass at the corresponding position of each subspace, so that the shape of the glass is changed to meet the structural requirement of corresponding bending forming.
In one embodiment, adjusting the pumping power, pumping on time, and pumping duration of each pumping duct to adjust the vacuum in each sub-space comprises:
the air exhaust duration of the air exhaust pipeline communicated with the central subspace is adjusted to be a first duration, the air exhaust duration of the air exhaust pipeline communicated with the big head subspace and the small head subspace is adjusted to be a second duration, the air exhaust duration of the air exhaust pipeline communicated with the secondary central subspace is a third duration, the air exhaust duration of the air exhaust pipeline communicated with the first side subspace and the second side subspace is a fourth duration, and the duration lengths of the first duration, the second duration, the third duration and the fourth duration are sequentially reduced. The air exhaust duration of the air exhaust pipeline is adjusted to adjust the time length of the vacuum acting force on the glass at the corresponding position of each subspace, so that the shape of the glass is changed to meet the structural requirement of corresponding bending forming.
In one embodiment, adjusting the pumping power, pumping on time, and pumping duration of each pumping duct to adjust the vacuum in each sub-space comprises:
adjusting the pumping power of the pumping pipelines communicated with the central subspace, the large head subspace, the small head subspace, the secondary central subspace, the first side edge subspace and the second side edge subspace to be reduced in sequence;
adjusting the air pumping opening time of air pumping pipelines communicated with the central subspace, the large head subspace, the small head subspace, the secondary central subspace, the first side edge subspace and the second side edge subspace and sequentially pushing back;
the pumping time for adjusting the pumping pipelines communicated with the central subspace, the large head subspace, the small head subspace, the secondary central subspace, the first side edge subspace and the second side edge subspace is reduced in sequence.
And meanwhile, the air exhaust power, the air exhaust opening time and the air exhaust duration of the air exhaust pipeline are adjusted, so that the shape change of each area position of the glass can be adjusted more systematically, and the glass can meet the structural requirements of corresponding bending forming.
In one embodiment, adjusting the pumping power, pumping on time, and pumping duration of each pumping duct to adjust the vacuum in each sub-space comprises:
when the glass surface corresponding to at least one subspace of the central subspace, the large head subspace, the small head subspace, the secondary central subspace, the first side edge subspace and the second side edge subspace is attached or approximately attached to the bearing surface, the air exhaust pipeline communicated with the corresponding subspaces is closed. When the surface of the glass corresponding to one sub-space is attached or nearly attached to the bearing surface, the air exhaust pipeline communicated with the corresponding sub-space can be closed, the shape change of the glass is indirectly adjusted through the air exhaust function of the air exhaust pipeline in the adjacent sub-space, and the phenomenon that the glass and the bearing surface are excessively extruded due to continuous air exhaust is avoided.
It can be understood that the adjustment of the air exhaust power, the air exhaust opening time and the air exhaust duration of each air exhaust pipeline, including but not limited to the above several manners, may also adopt different adjustment manners according to actual conditions, as long as the glass can meet the structural requirements of the corresponding bending molding, and is not specifically limited herein.
In one embodiment, the vehicle glass bending device further comprises an annular top die, the annular top die is arranged on one side, away from the base, of the top plate, the annular top die comprises a top die plate and a side die plate, the side die plate is arranged on the top die plate and faces one side of the bearing surface, the top die plate and the side die plate are enclosed to form a containing cavity, a blowing channel is arranged in the containing cavity, and the blowing channel faces the bearing surface and blows air to the glass. The upper surface of the glass is blown by the blowing channel on the annular top die, so that the lower surface of the glass is under the action of vacuum acting force, and the upper surface of the glass is under the action of blowing pressure, so that the glass can achieve the effect of rapid bending forming. And when the concave bottom die and the annular top die are used simultaneously, a plurality of pieces of glass which are arranged in a stacked mode can be processed simultaneously, and the processing process efficiency is improved to a certain extent.
In one embodiment, a plurality of second partition plates are arranged in the accommodating cavity, the accommodating cavity is divided into a plurality of sub-accommodating cavities by the second partition plates, the sub-accommodating cavities are respectively arranged opposite to the sub-spaces one by one, the number of the air blowing channels is multiple, and each sub-accommodating cavity is internally provided with one air blowing channel; the blowing power, the blowing starting time and the blowing duration of the blowing channels are adjusted, so that the glass can be subjected to blowing pressures of different degrees relative to different parts of the sub-containing cavities. The plurality of sub-containing cavities are respectively arranged opposite to the plurality of subspaces, so that each region of the glass can be subjected to corresponding vacuum acting force and blowing pressure, and double adjustment of the forming shape of the glass is facilitated.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (19)
1. The vehicular glass bending forming device is characterized by comprising a concave bottom die and a plurality of air exhaust pipelines, wherein the concave bottom die comprises a base and a top plate, the top plate covers the base and is enclosed with the base to form an accommodating space, a plurality of first partition plates are arranged in the accommodating space, and the accommodating space is divided into a plurality of subspaces by the first partition plates; the bearing surface of the top plate, which is far away from the base, is a concave surface, the bearing surface is used for bearing glass, a plurality of through holes communicated with the accommodating space are arranged on the top plate at intervals, each subspace at least corresponds to one through hole, and the plurality of air exhaust pipelines are communicated with the plurality of subspaces one by one so as to exhaust air in the plurality of subspaces; automobile-used glass bending device still includes cyclic annular top mould, cyclic annular top mould is located the roof deviates from one side of base, cyclic annular top mould includes the cope match-plate pattern and sets up in the cope match-plate pattern and orientation the side form board of loading end one side, the cope match-plate pattern with the side form board encloses to close and forms and holds the chamber, it is equipped with the passageway of blowing to hold the intracavity, the passageway orientation of blowing the loading end is used for right glass blows, automobile-used glass bending device is used for carrying out the secondary bending to the glass after receiving the gravity preforming.
2. The bending apparatus for vehicle glass according to claim 1, wherein the plurality of subspaces includes a central subspace corresponding to a central region of the top plate, a sub-central subspace surrounding the central subspace, and a plurality of edge subspaces distributed around the sub-central subspace and collectively surrounding the sub-central subspace.
3. The vehicular glass bending apparatus according to claim 2, wherein the plurality of edge subspaces include a big head subspace, a small head subspace, a first side subspace and a second side subspace, the big head subspace and the small head subspace are located on opposite sides of the sub-center subspace, the first side subspace and the second side subspace are located on opposite sides of the sub-center subspace, an area of the top plate corresponding to the big head subspace is a first area, an area of the top plate corresponding to the small head subspace is a second area, and a radius of curvature of the first area is greater than a radius of curvature of the second area.
4. The apparatus of claim 1, further comprising a control for adjusting each of the evacuation lines such that the vacuum level in each of the sub-spaces is adjustable.
5. The bending apparatus for vehicle glass according to claim 3, wherein a plurality of second partitions are disposed in the accommodating cavity, the second partitions divide the accommodating cavity into a plurality of sub-accommodating cavities, the sub-accommodating cavities are a central sub-accommodating cavity and a plurality of edge sub-accommodating cavities, the central sub-accommodating cavity is disposed opposite to the central sub-space and the sub-central sub-space, the edge sub-accommodating cavities are disposed opposite to the first side sub-space, the second side sub-space, the big head sub-space and the small head sub-space, and the blowing channels are disposed in a plurality of numbers, and at least one blowing channel is disposed in each sub-accommodating cavity.
6. The bending apparatus for vehicle glass according to claim 5, wherein the central sub-receiving cavity includes a first central sub-receiving cavity and a second central sub-receiving cavity, the first central sub-receiving cavity is disposed opposite to the central sub-space, the second central sub-receiving cavity is disposed opposite to the sub-central sub-space, and at least one of the air blowing passages is disposed in each of the first central sub-receiving cavity and the second central sub-receiving cavity.
7. The apparatus for bending and forming glass for vehicle as claimed in claim 1, wherein the blowing power, the blowing on time and the blowing time period of the blowing channel are adjustable.
8. The vehicle glass bending apparatus according to claim 1, further comprising a pre-forming frame having a ring frame structure, wherein the pre-forming frame is sleeved on the periphery of the concave bottom mold, and the curvature radius of the pre-forming frame is greater than that of the concave bottom mold.
9. The apparatus for bending and forming glass for vehicle according to any one of claims 1 to 8, wherein the glass is at least one, and when the number of the glass is more than one, a plurality of the glass is laminated on the bearing surface.
10. A method for bending and forming glass for a vehicle, comprising:
providing a vehicle glass bending forming device, wherein the vehicle glass bending forming device comprises a concave bottom die and a plurality of air exhaust pipelines, the concave bottom die comprises a base and a top plate, the top plate covers the base and forms an accommodating space with the base in an enclosing manner, the bearing surface of the top plate, which is far away from the base, is an irregular concave surface, the bearing surface is used for bearing glass, a plurality of through holes are arranged on the top plate at intervals, a plurality of first partition plates are arranged in the accommodating space, the accommodating space is divided into a plurality of subspaces by the first partition plates, each subspace is communicated with at least one through hole, and the air exhaust pipelines are communicated with the subspaces one by one; the vehicular glass bending forming device further comprises an annular top die, the annular top die is arranged on one side, away from the base, of the top plate, the annular top die comprises a top die plate and a side die plate, the side die plate is arranged on the top die plate and faces one side of the bearing surface, the top die plate and the side die plate are enclosed to form a containing cavity, an air blowing channel is arranged in the containing cavity, and the air blowing channel faces the bearing surface and is used for blowing the glass;
placing the glass heated to the forming temperature on the bearing surface, wherein the glass is deformed under the action of gravity to complete primary preforming;
and using the plurality of air exhaust pipelines to exhaust the plurality of subspaces so as to ensure that the glass is completely attached to the bearing surface to carry out secondary bending forming.
11. The method of claim 10, wherein the plurality of subspaces includes a center subspace corresponding to a central region of the top plate, a sub-center subspace surrounding the center subspace, and a plurality of edge subspaces distributed around the sub-center subspace and collectively surrounding the sub-center subspace, and wherein there is a difference in pumping pattern between the pumping ducts communicating with the center subspace, the sub-center subspace, and the plurality of edge subspaces.
12. The method for bending and forming glass for vehicles according to claim 11, wherein the plurality of edge subspaces include a big head subspace, a small head subspace, a first side subspace and a second side subspace, the big head subspace and the small head subspace are located on opposite sides of the sub-center subspace, the first side subspace and the second side subspace are located on opposite sides of the sub-center subspace, the air exhaust duct communicating with the big head subspace and the small head subspace is evacuated in a first manner, the air exhaust duct communicating with the first side subspace and the second side subspace is evacuated in a second manner, and the first manner is different from the second manner.
13. The method of claim 12, wherein the evacuating the plurality of subspaces using the plurality of evacuation ducts to fully conform the glass to the load-bearing surface comprises:
and adjusting the air exhaust power, the air exhaust opening time and the air exhaust duration of each air exhaust pipeline so as to respectively adjust the vacuum action in each subspace.
14. The method for bending and forming vehicular glass according to claim 13, wherein the adjusting of the pumping power, pumping on time and pumping duration of each of the pumping ducts to respectively adjust the vacuum effect in each of the sub-spaces comprises:
the regulation with the pumping duct that the center subspace is linked together adopts first bleed power, with the pumping duct that big head subspace with little head subspace is linked together adopts second bleed power, with the pumping duct that inferior center subspace is linked together adopts third bleed power, with the pumping duct that first side subspace with second side subspace is linked together adopts fourth bleed power, first bleed power second bleed power third bleed power with the power size of fourth bleed power reduces in proper order.
15. The method for bending and forming vehicular glass according to claim 13, wherein the adjusting of the pumping power, pumping on time and pumping duration of each of the pumping ducts to respectively adjust the vacuum effect in each of the sub-spaces comprises:
adjusting the air exhaust opening time of an air exhaust pipeline communicated with the central subspace to be first time, the air exhaust opening time of an air exhaust pipeline communicated with the big head subspace and the small head subspace to be second time, the air exhaust opening time of an air exhaust pipeline communicated with the secondary central subspace to be third time, the air exhaust opening time of an air exhaust pipeline communicated with the first side subspace and the second side subspace to be fourth time, and sequentially pushing back the time sequence of the first time, the second time, the third time and the fourth time.
16. The method for bending and forming vehicular glass according to claim 13, wherein the adjusting of the pumping power, pumping on time and pumping duration of each of the pumping ducts to respectively adjust the vacuum effect in each of the sub-spaces comprises:
adjust with it is first time length during pumping of the pumping pipeline that the center subspace is linked together, with big head subspace with pumping pipeline that the microcephaly subspace is linked together is long for the second during pumping, with time center subspace is linked together pumping pipeline's pumping is long for the third during long, with first side subspace with pumping pipeline's that second side subspace is linked together is long for the fourth during long, first time length the second is long the third is long with the duration length of time length of fourth reduces in proper order.
17. The method for bending and forming vehicular glass according to claim 13, wherein the adjusting of the pumping power, pumping on time and pumping duration of each of the pumping ducts to respectively adjust the vacuum effect in each of the sub-spaces comprises:
adjusting the pumping power of pumping pipelines communicated with the central subspace, the large head subspace, the small head subspace, the secondary central subspace, the first side edge subspace and the second side edge subspace to be reduced in sequence;
adjusting the air exhaust opening time of air exhaust pipelines communicated with the central subspace, the large head subspace, the small head subspace, the secondary central subspace, the first side edge subspace and the second side edge subspace to be sequentially pushed back;
the air pumping duration of the air pumping pipeline communicated with the central subspace, the big head subspace, the small head subspace, the secondary central subspace, the first side edge subspace and the second side edge subspace is adjusted to be reduced in sequence.
18. The method for bending and forming vehicular glass according to claim 13, wherein the adjusting of the pumping power, pumping on time and pumping duration of each of the pumping ducts to respectively adjust the vacuum effect in each of the sub-spaces comprises:
when at least one of the central subspace, the large head subspace, the small head subspace, the secondary central subspace, the first side subspace and the second side subspace is jointed or closely jointed with the bearing surface, the air exhaust pipeline communicated with the corresponding subspaces is closed.
19. The bending method for vehicle glass according to claim 10, wherein a plurality of second partition plates are arranged in the accommodating cavity, the accommodating cavity is divided into a plurality of sub-accommodating cavities by the plurality of second partition plates, the plurality of sub-accommodating cavities are respectively arranged opposite to the plurality of subspaces one by one, the number of the air blowing channels is multiple, and one air blowing channel is arranged in each sub-accommodating cavity; and adjusting the blowing power, the blowing starting time and the blowing duration of the blowing channels to ensure that the glass is subjected to blowing pressure of different degrees relative to different parts of the sub-containing cavities.
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