CN110922036B - 3D glass hot bending die and process thereof - Google Patents
3D glass hot bending die and process thereof Download PDFInfo
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- CN110922036B CN110922036B CN201911353867.4A CN201911353867A CN110922036B CN 110922036 B CN110922036 B CN 110922036B CN 201911353867 A CN201911353867 A CN 201911353867A CN 110922036 B CN110922036 B CN 110922036B
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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
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B40/00—Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it
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- 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
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- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention discloses a 3D glass hot bending die and a process thereof, comprising a hot bending box, wherein a first water flow channel is arranged in a heat conduction upper die, and a first heating block is arranged in an inner cavity of the heat conduction upper die; a heat conduction side die is arranged in an inner cavity of one side, close to the lower convex die, of the side operation block, a water flow channel II and a heating block II are arranged in the inner cavity of the heat conduction side die, an arc-shaped air channel is arranged in the inner cavity of the side operation block, and a plurality of air outlet pipes are communicated with the arc-shaped air channel; the transmission gear is characterized in that the transmission gear columns are arranged at the far ends of the driving gear and the driven gear in a meshed mode, chains are arranged on the transmission gear columns in a meshed mode, and the chains are arranged on the rotating shafts in a meshed mode. The invention provides a 3D glass hot bending die, which can perform non-contact preheating and dynamic hot pressing lamination, effectively reduces the breakage rate of 3D glass during hot bending forming, and also provides a 3D glass hot bending die-based process, which is simple to operate and very worth popularizing.
Description
Technical Field
The invention relates to the technical field of glass hot bending, in particular to a 3D glass hot bending die and a process thereof.
Background
Among the prior art, the application number is a glass apron hot bending mould of "201721080017.8", including last mould, logical groove, briquetting and bed die, this glass apron hot bending mould compresses tightly the glass that treats hot bending through last mould and bed die, the clamp plate of hot bending machine promotes the briquetting and pushes down, the briquetting is treated hot bending glass's four angles and is pushed down the operation, the convex recess of briquetting is curved with the convex boss cooperation messenger treating hot bending glass's four angles to make and accomplish the curved 3D glass apron in four corners, this glass apron hot bending mould improves last mould and bed die, adopt hot bending technology to realize the curved 3D glass apron's of four corners processing production degree of difficulty, the curved 3D glass apron in four corners has been reduced.
However, during the use process, the method still has obvious defects: 1. in actual production, because the upper die and the lower die are generally high in mass, if the upper die directly presses the glass to heat before the glass blank is formed, the pressure on the glass blank is high, and when the thickness of the glass blank is thin, the glass is easy to crush; 2. when the radian of the 3D glass is large, if the glass is directly extruded by a solid die, the glass is easily bent to a large extent to generate stress cracking, and the device cannot effectively solve the problem; 3. the glass needs to be heated and cooled when being bent, and a large amount of heat is consumed and generated during the period, and the device cannot reutilize the energy, so that the energy conservation and the environmental protection are not facilitated.
Disclosure of Invention
The invention aims to provide a 3D glass hot bending die and a process thereof, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a 3D glass hot bending mould, includes the hot bending case, be provided with first hot bending mould group and second hot bending mould group in the hot bending case respectively, first hot bending mould group and second hot bending mould group all are including the lower protruding mould, the fixed reference column that is provided with on the lower protruding mould is symmetrical, fixedly between the reference column is provided with the crossbeam, the crossbeam is close to the fixed cylinder that is provided with in one side of lower protruding mould, the output of cylinder is fixedly provided with the intermediate lamella, the intermediate lamella is close to the fixed heat conduction upper die that is provided with in one side of lower protruding mould, set up water flow channel I in the heat conduction upper die, be provided with the heating block I in the inner chamber of heat conduction upper die, the both ends of heat conduction upper die are provided with side operation piece through pivot swing joint;
a heat conduction side die is arranged in an inner cavity of one side, close to the lower convex die, of the side operation block, a water flow channel II and a heating block II are arranged in the inner cavity of the heat conduction side die, an arc-shaped air duct is arranged in the inner cavity of the side operation block, a plurality of air outlet pipes are communicated with each other on the arc-shaped air duct, the air outlet pipes penetrate through the side operation block, the arc-shaped air duct is communicated with an air inlet hose, and the air inlet hose is communicated with an air heater;
the water flow channels at two ends are communicated through a first communicating water channel, a first water inlet pipe and a first water outlet pipe are communicated at one side, close to the cross beam, of the first hot bending die set, a first water pump and a first electric valve are arranged on the first communicating water channel, the first water pump is arranged at one side, far away from the first water inlet pipe, of the first water inlet pipe, the first electric valve is arranged between the first water inlet pipe and the first water outlet pipe, the first water outlet pipe is communicated with a three-way valve, a second water outlet pipe and a second water inlet pipe are communicated on the three-way valve, the second water inlet pipe is communicated with the first water inlet pipe of the second hot bending die set, a third water outlet pipe is communicated with the first communicating water channel of the second hot bending die set, a second electric valve and a second water pump are arranged on the first communicating water channel of the second hot bending die set, the second electric valve is arranged at one side, close to the three-way valve, and the second water pump is arranged at one side, far away from the three-way valve;
the automatic transmission device is characterized in that a mounting plate is fixedly arranged on the middle plate, a driving gear is rotatably arranged on the mounting plate, a rotating motor is arranged on the driving gear, a driven gear is arranged on the side face of the driving gear in a meshed mode, a transmission gear column is arranged on the driving gear and the driven gear in a meshed mode at the far end of the driving gear and the driven gear, the driven gear and the transmission gear column are rotatably arranged on the mounting plate, a chain is arranged on the transmission gear column in a meshed mode, and the chain is arranged on the rotating shaft in a meshed mode.
Preferably, guide plates are fixedly arranged at two ends of the middle plate, guide holes are formed in the guide plates, and the guide holes are sleeved on the outer sides of the positioning columns.
Preferably, the second heating block is arranged at two sides of the second water flow channel.
Preferably, the air heater is arranged on the middle plate.
A process based on the D glass hot bending die, comprising the following steps:
step one: the preparation stage: placing glass to be processed between a heat conducting upper die and a lower die of a first hot bending die set;
step two: preheating: starting an air cylinder, namely stopping the heat conduction upper die and the heat conduction side die when the heat conduction upper die is close to the glass and the distance between the heat conduction upper die and the glass is 1-3cm, starting a first heating block, a second heating block and a hot air blower, wherein the middle section of the first heating block pair of glass is subjected to non-contact preheating, and the second heating block and the hot air blower blow out of an air outlet pipe are subjected to non-contact preheating on the edge section of the glass;
step three: hot pressing: starting the air cylinder continuously to enable the heat conduction upper die to be in contact with the middle section of the glass, stopping the air heater at the moment, heating the heat conduction upper die by the first heating block, performing hot press forming on the middle section of the glass, heating the heat conduction side die by the second heating block, starting the rotating motor to enable the heat conduction side die to slowly rotate, and performing hot press forming on the edge end of the glass;
step four: buffer cooling stage: introducing cold water from the first water inlet pipe until the first water inlet pipe is filled with water, closing the first water inlet pipe, opening the first electric valve and the first water pump, and circulating water for a plurality of times in the first water inlet pipe, the second water flow channel and the first water flow channel under the action of gravity to cool the heat conducting upper die and the heat conducting side die and primarily cool glass;
step five: closing the electric valve I, communicating the water outlet pipe I with the water inlet pipe II through the three-way valve, and enabling warm water in the communicated water channel I of the first hot bending die set to enter the communicated water channel I of the second hot bending die set, so that the glass and the dies in the second hot bending die set can be preheated;
step six: cooling and demoulding: and opening the first water pump and the first electric valve, communicating the first water outlet pipe with the second water outlet pipe through the three-way valve, introducing cold water through the first water inlet pipe, cooling the heat-conducting upper die, the heat-conducting side die and the heat-bent glass, and demolding due to the fact that the widths of the heat expansion and the cold contraction of the die and the glass are different when the die and the glass are cooled.
Preferably, the above steps are all carried out under nitrogen-protected atmosphere.
Compared with the prior art, the invention has the beneficial effects that:
1. when the device preheats glass, hot air blowing heating is carried out by adopting a non-contact method, so that the phenomenon that sheet glass is broken due to the fact that an upper die with heavy mass is directly pressed on the glass is avoided;
2. for the 3D glass with larger radian at the edge, the heat conduction side die of the device gradually rotates to a fitting state, so that the bending at the edge of the glass can be slowly transited along with the heating process when the glass is bent, and the problem of high glass breakage rate caused by direct and large-amplitude bending is effectively solved;
3. the heat that is provided with two sets of hot bending moulds in the hot bending case of this device, first hot bending mould group produced at the buffering cooling stage can be with rivers heating for the preheating of second hot bending mould group to glass carries out the reutilization of energy. Energy is effectively saved;
4. the device utilizes the difference of the amplitude of thermal expansion and cold contraction of the mold and the glass during cooling, is convenient for mold opening, and ensures that the demolding process is more convenient and quick.
The invention provides a 3D glass hot bending die, which can perform non-contact preheating and dynamic hot pressing lamination, effectively reduces the breakage rate of 3D glass during hot bending forming, and also provides a 3D glass hot bending die-based process, which is simple to operate and very worth popularizing.
Drawings
FIG. 1 is a schematic cross-sectional view of the overall structure of the present invention;
FIG. 2 is a schematic view of a first hot bending die set according to the present invention;
FIG. 3 is an enlarged view of the invention at A in FIG. 2;
fig. 4 is an enlarged view of fig. 2 at B in accordance with the present invention.
In the figure: the hot bending box 1, the first hot bending die set 2, the second hot bending die set 3, the lower convex die set 4, the positioning column 5, the cross beam 6, the air cylinder 7, the middle plate 8, the guide plate 9, the guide hole 10, the heat conducting upper die 11, the water flow channel I, the heating block I, the 14 rotating shaft 15 side operation block, the heat conducting side die 16, the water flow channel II, the heating block II, the 19 arc-shaped air duct, the 20 air outlet pipe, the 21 air inlet hose, the 22 hot air blower 23, the 23 communicated water channel I, the 24 water inlet pipe I, the 25 water outlet pipe I, the 26 water pump I, the 27 electric valve I, the 28 three-way valve, the 29 water outlet pipe II, the 30 water inlet pipe II, the 31 water outlet pipe III, the 32 electric valve II, the 33 water pump II, the 34 mounting plate 35 driving gears, the 36 rotating motor, the 37 driven gears, the 38 conductive gear columns and the 39 chains.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present invention provides a technical solution:
the utility model provides a 3D glass hot bending mould, including hot bending case 1, be provided with first hot bending mould group 2 and second hot bending mould group 3 in the hot bending case 1 respectively, can carry out the processing of two sets of glasses, and efficiency is higher, first hot bending mould group 2 and second hot bending mould group 3 all are including lower punch 4, the fixed reference column 5 that is provided with on the lower punch 4 symmetry, fixedly between the reference column 5, the fixed crossbeam 6 that is provided with in one side that is close to lower punch 4 of crossbeam 6, the cylinder 7 can adopt the SC50-350 model that the flood air company provided, the fixed intermediate lamella 8 that is provided with of output of cylinder 7, the fixed heat conduction upper die 11 that is provided with in one side that is close to lower punch 4 of intermediate lamella 8, heat conduction upper die 11 is made by the heat conduction material, have good heat conductivility, water flow channel one 12 has been seted up in the heat conduction upper die 11, be provided with heating block one 13 in the inner chamber of heat conduction upper die 11, the both ends of heat conduction upper die 11 are provided with side operation piece 15 through pivot 14 swing joint.
The side operation block 15 is provided with a heat conduction side die 16 in the inner cavity of one side close to the lower punch die 4, the heat conduction side die 16 is made of heat conduction materials and has good heat conduction performance, the inner cavity of the heat conduction side die 16 is provided with a water flow channel II 17 and a heating block II 18, the inner cavity of the side operation block 15 is provided with an arc-shaped air duct 19, a plurality of air outlet pipes 20 are communicated and arranged on the arc-shaped air duct 19, the air outlet pipes 20 penetrate through the side operation block 15, hot air is blown out of the air outlet pipes 20, the edge of glass is preheated in a non-contact manner, the arc-shaped air duct 19 is communicated and arranged on an air inlet hose 21, the air inlet hose 21 is communicated with an air heater 22, and the air heater 22 can adopt the model HAG-R3A-11 provided by tin-free Gage machinery limited company.
The water flow channels II 17 at two ends are communicated through a first communicating water channel 23, a first water inlet pipe 24 and a first water outlet pipe 25 are communicated on one side, close to the cross beam 6, of the first communicating water channel 23, a first water pump 26 and a first electric valve 27 are arranged on the first communicating water channel 23, the first water pump 26 is arranged on one side, far away from the first water outlet pipe 25, of the first water inlet pipe 24, the first electric valve 27 is arranged between the first water inlet pipe 24 and the first water outlet pipe 25, the first water outlet pipe 25 is communicated with a three-way valve 28, a second water outlet pipe 29 and a second water inlet pipe 30 are communicated on the three-way valve 28, the second water inlet pipe 30 is communicated on the first communicating water channel 23 of the second hot bending die set 3, a third water outlet pipe 31 is communicated on the first communicating water channel 23 of the second hot bending die set 3, an electric valve II 32 and a second water pump 33 are arranged on the first communicating water channel 23 of the second hot bending die set 3, the electric valve II 32 is arranged on one side, close to the third water outlet pipe 31, and the water pump 33 is arranged on one side, far away from the three-way valve 28, of the third water outlet pipe 31.
The middle plate 8 is fixedly provided with a mounting plate 34, the mounting plate 34 is rotatably provided with a driving gear 35, the driving gear 35 is provided with a rotating motor 36, the rotating motor 36 can adopt Y2-132M-4 model provided by Langbo motor limited, the side surface of the driving gear 35 is meshed with a driven gear 37, the far end of the driving gear 35 and the far end of the driven gear 37 are meshed with a conducting gear column 38, the driven gear 37 and the conducting gear column 38 are both rotatably arranged on the mounting plate 34, the conducting gear column 38 is meshed with a chain 39, the chain 39 is arranged on the lower half section of the conducting gear column 38, and therefore the upper half section of the conducting gear column 38 is meshed with the driving gear 35 and the driven gear 37, and the chain 39 is meshed with the rotating shaft 14.
The first water pump 26 and the second water pump 33 can be NMDP41 provided by Xiamen Pump Co Ltd, and the first electric valve 27 and the second electric valve 32 can be Q941F-16C/P provided by Hezhou Gami self-control valve Co Ltd.
As a preference, fixed deflector 9 that is provided with in both ends of intermediate lamella 8, offered guiding hole 10 on the deflector 9, the outside at reference column 5 is established to guiding hole 10 cover, and deflector 9 can remove along reference column 5 through guiding hole 10, reduces the error because of the part thermal expansion brings, guarantees the precision of 3D glass product.
Preferably, the second heating block 18 is disposed on two sides of the second water flow channel 17, and the second heating block 18 can heat the heat-conducting side mold 16.
As a preference, a hot air blower 22 is provided on the intermediate plate 8 for supplying hot air.
A process based on a 3D glass hot bending die, comprising the steps of:
step one: the preparation stage: placing glass to be processed between the heat conducting upper die 11 and the lower die 4 of the first hot bending die set 2;
step two: preheating: starting a cylinder 7, namely enabling the heat conduction upper die 11 and the heat conduction side die 16 to be close to glass, stopping when the heat conduction upper die 11 is 1-3cm away from the glass, starting a first heating block 13, a second heating block 18 and a hot air blower 22, wherein the first heating block 13 carries out non-contact preheating on the middle section of the glass through air heat conduction, and the second heating block 18 and the hot air blower 22 carry out non-contact preheating on the edge section of the glass through hot air blown out from an air outlet pipe 20, so that the phenomenon that the sheet glass is broken due to the fact that the dies with heavy mass are directly pressed on the glass is avoided;
step three: hot pressing: the cylinder 7 is continuously started to enable the heat conduction upper die 11 to be in contact with the middle section of the glass, at the moment, the hot air blower 22 is stopped, the first heating block 13 heats the heat conduction upper die 11 to perform hot press on the middle section of the glass, the glass is gradually softened and molded, the second heating block 18 heats the heat conduction side die 16, the rotating motor 36 is started, the rotating motor 36 drives the driven gear 37 to rotate through the driving gear 35, the driving gear 35 and the driven gear 37 drive the conductive gear column 38 to rotate, and the conductive gear column 38 finally drives the rotating shaft 14 to rotate through the chain 39, so that the heat conduction side die 16 slowly rotates to perform hot press molding on the edge end of the glass, and high breakage rate of the glass caused by direct large-amplitude bending is avoided;
step four: buffer cooling stage: introducing cold water from the first water inlet pipe 24 until the first water inlet pipe 23 is full of water, closing the first water inlet pipe 24, opening the first electric valve 27 and the first water pump 26, and circulating water in the first water inlet pipe 23, the second water flow channel 17 and the first water flow channel 12 for a plurality of times under the action of gravity without upwards entering the first water inlet pipe 24 or the first water outlet pipe 25, wherein the cold water cools the heat conducting upper die 11 and the heat conducting side die 16 and primarily cools glass;
step five: closing the electric valve I27, communicating the water outlet pipe I25 with the water inlet pipe II 30 through the three-way valve 28, and enabling warm water in the water communication channel I23 of the first hot bending die set 2 to enter the water communication channel I23 of the second hot bending die set 3, so that glass and dies in the second hot bending die set 3 can be preheated;
step six: cooling and demoulding: the first water pump 26 and the first electric valve 27 are opened, the first water outlet pipe 25 and the second water outlet pipe 29 are communicated through the three-way valve 28, cold water is introduced through the first water inlet pipe 24, the heat conducting upper die 11, the heat conducting side die 16 and the heat bent glass are cooled, the used water is discharged from the second water outlet pipe 29, and gaps are formed between the die and the glass for demoulding due to different heat expansion and cold contraction amplitudes of the die and the glass during cooling.
Preferably, all the steps are carried out in a nitrogen protection atmosphere, so that the method is safe and effective.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a 3D glass hot bending mould, includes hot bending case (1), its characterized in that: the hot bending die comprises a hot bending box (1), wherein a first hot bending die set (2) and a second hot bending die set (3) are respectively arranged in the hot bending box (1), the first hot bending die set (2) and the second hot bending die set (3) both comprise lower convex dies (4), positioning columns (5) are symmetrically and fixedly arranged on the lower convex dies (4), a cross beam (6) is fixedly arranged between the positioning columns (5), one side, close to the lower convex dies (4), of the cross beam (6) is fixedly provided with an air cylinder (7), the output end of the air cylinder (7) is fixedly provided with a middle plate (8), one side, close to the lower convex dies (4), of the middle plate (8) is fixedly provided with a heat conducting upper die (11), a water flow channel I (12) is formed in the heat conducting upper die (11), a heating block I (13) is arranged in an inner cavity of the heat conducting upper die (11), and two ends of the heat conducting upper die (11) are movably connected with side operation blocks (15) through a rotating shaft (14);
a heat conduction side die (16) is arranged in an inner cavity of one side, close to the lower convex die (4), of the side operation block (15), a water flow channel II (17) and a heating block II (18) are arranged in an inner cavity of the heat conduction side die (16), an arc-shaped air duct (19) is arranged in an inner cavity of the side operation block (15), a plurality of air outlet pipes (20) are communicated with each other on the arc-shaped air duct (19), the air outlet pipes (20) penetrate through the side operation block (15), the arc-shaped air duct (19) is communicated with an air inlet hose (21), and the air inlet hose (21) is communicated with a hot air blower (22);
the two ends of the water flow channel II (17) are communicated through a first communicating water channel (23), one side, close to the cross beam (6), of the first communicating water channel I (23) of the first hot bending die set (2) is communicated with a first water inlet pipe (24) and a first water outlet pipe (25), a first water pump (26) and a first electric valve (27) are arranged on the first communicating water channel (23), the first water pump (26) is arranged on one side, far away from the first water outlet pipe (25), of the first water inlet pipe (24), the first electric valve (27) is arranged between the first water inlet pipe (24) and the first water outlet pipe (25), the first water outlet pipe (25) is communicated with a three-way valve (28), the three-way valve (28) is communicated with a second water outlet pipe (29) and a second water inlet pipe (30), the second water inlet pipe (30) is communicated with the first communicating water channel I (23) of the second hot bending die set (3), a third water outlet pipe (31) is communicated with the first communicating water inlet pipe (23) of the second hot bending die set (3), the first electric valve (23) of the second hot bending die set (3) is communicated with the second electric valve (23) is arranged on the second water outlet pipe (32) and the second water outlet pipe (32) is close to the third water outlet valve (32), the second water pump (33) is arranged at one side of the third water outlet pipe (31) far away from the three-way valve (28);
the utility model discloses a motor vehicle speed reducer is characterized in that a mounting plate (34) is fixedly arranged on an intermediate plate (8), a driving gear (35) is rotationally arranged on the mounting plate (34), a rotating motor (36) is arranged on the driving gear (35), a driven gear (37) is arranged on the side surface of the driving gear (35) in a meshed mode, a conducting gear column (38) is arranged on the driving gear (35) and the driven gear (37) in a meshed mode at the far end, the driven gear (37) and the conducting gear column (38) are rotationally arranged on the mounting plate (34), a chain (39) is arranged on the conducting gear column (38) in a meshed mode, and the chain (39) is arranged on a rotating shaft (14) in a meshed mode.
2. The 3D glass hot bending mold according to claim 1, wherein: guide plates (9) are fixedly arranged at two ends of the middle plate (8), guide holes (10) are formed in the guide plates (9), and the guide holes (10) are sleeved on the outer sides of the positioning columns (5).
3. The 3D glass hot bending mold according to claim 1, wherein: the second heating block (18) is arranged on two sides of the second water flow channel (17).
4. The 3D glass hot bending mold according to claim 1, wherein: the air heater (22) is arranged on the middle plate (8).
5. A process based on the 3D glass hot bending mould according to any one of claims 1 to 4, characterized in that: the method comprises the following steps:
step one: the preparation stage: placing glass to be processed between a heat conducting upper die (11) and a lower convex die (4) of a first hot bending die set (2);
step two: preheating: starting an air cylinder (7), enabling the heat conduction upper die (11) and the heat conduction side die (16) to be close to glass, stopping when the heat conduction upper die (11) is 1-3cm away from the glass, starting a first heating block (13), a second heating block (18) and a hot air blower (22), enabling the first heating block (13) to perform non-contact preheating on the middle section of the glass, and enabling hot air blown out from an air outlet pipe (20) by the second heating block (18) and the hot air blower (22) to perform non-contact preheating on the edge section of the glass;
step three: hot pressing: starting the air cylinder (7) continuously to enable the heat conduction upper die (11) to be in contact with the middle section of the glass, stopping the air heater (22) at the moment, heating the heat conduction upper die (11) by the first heating block (13), performing hot press molding on the middle section of the glass, heating the heat conduction side die (16) by the second heating block (18), starting the rotating motor (36), enabling the heat conduction side die (16) to slowly rotate, and performing hot press molding on the edge end of the glass;
step four: buffer cooling stage: introducing cold water from the first water inlet pipe (24) until the first water inlet pipe (23) is filled with water, closing the first water inlet pipe (24), opening the first electric valve (27) and the first water pump (26), and circulating water for a plurality of times in the first water inlet pipe (23), the second water flow channel (17) and the first water flow channel (12) under the action of gravity to cool the heat conducting upper die (11) and the heat conducting side die (16) and primarily cool glass;
step five: closing the electric valve I (27), communicating the water outlet pipe I (25) with the water inlet pipe II (30) through the three-way valve (28), and enabling warm water in the communicating water channel I (23) of the first hot bending die set (2) to enter the communicating water channel I (23) of the second hot bending die set (3) so as to preheat glass and dies in the second hot bending die set (3);
step six: cooling and demoulding: the first water pump (26) and the first electric valve (27) are opened, the first water outlet pipe (25) and the second water outlet pipe (29) are communicated through the three-way valve (28), cold water is introduced through the first water inlet pipe (24), the heat conducting upper die (11), the heat conducting side die (16) and the heat bent glass are cooled, and gaps are formed between the die and the glass for demolding due to different heat expansion and cold contraction amplitudes of the die and the glass during cooling.
6. A process according to claim 5, wherein: all the steps are carried out under the atmosphere of nitrogen protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911353867.4A CN110922036B (en) | 2019-12-25 | 2019-12-25 | 3D glass hot bending die and process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911353867.4A CN110922036B (en) | 2019-12-25 | 2019-12-25 | 3D glass hot bending die and process thereof |
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| CN110922036A CN110922036A (en) | 2020-03-27 |
| CN110922036B true CN110922036B (en) | 2023-07-14 |
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| CN111547992B (en) * | 2020-04-13 | 2022-07-05 | 江西沃格光电股份有限公司 | Hot bending die, cover plate, manufacturing method of cover plate and mobile terminal |
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|---|---|---|---|---|
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| CN104445888A (en) * | 2014-12-16 | 2015-03-25 | 蓝思科技（长沙）有限公司 | Forming method for bent glass |
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| CN109111091A (en) * | 2018-09-30 | 2019-01-01 | 东旭科技集团有限公司 | Graphite mold, 3D glass hot bending device and 3D glass hot bending method |
| CN211111701U (en) * | 2019-12-25 | 2020-07-28 | 凯盛信息显示材料(池州)有限公司 | 3D glass hot bending die |
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| KR100920616B1 (en) * | 2009-06-02 | 2009-10-08 | 이정호 | Cooling apparatus for manufacturing curved tempered glass |
| CN104445888A (en) * | 2014-12-16 | 2015-03-25 | 蓝思科技（长沙）有限公司 | Forming method for bent glass |
| KR20160075300A (en) * | 2014-12-19 | 2016-06-29 | 삼성전자주식회사 | Apparatus for forming glass curve and method using the same |
| FR3050202A1 (en) * | 2016-04-13 | 2017-10-20 | Saint Gobain | BOMBAGE OF GLASS SHEETS |
| CN207108810U (en) * | 2017-08-25 | 2018-03-16 | 蓝思科技（长沙）有限公司 | A kind of glass cover-plate hot bending die |
| CN108545917A (en) * | 2018-06-22 | 2018-09-18 | 惠州达特尔机器人有限公司 | A kind of glass plate hot bending method and applied to the device in this method |
| CN108640488A (en) * | 2018-07-25 | 2018-10-12 | 蚌埠淮畔精密机械有限公司 | A kind of recurvation formula glass bending furnace |
| CN109081563A (en) * | 2018-09-30 | 2018-12-25 | 东旭科技集团有限公司 | 3D glass heat bender and 3D glass forming method |
| CN109111091A (en) * | 2018-09-30 | 2019-01-01 | 东旭科技集团有限公司 | Graphite mold, 3D glass hot bending device and 3D glass hot bending method |
| CN211111701U (en) * | 2019-12-25 | 2020-07-28 | 凯盛信息显示材料(池州)有限公司 | 3D glass hot bending die |
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| CN110922036A (en) | 2020-03-27 |
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