CN208008668U - Differential hot bending system - Google Patents
Differential hot bending system Download PDFInfo
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- CN208008668U CN208008668U CN201721798433.1U CN201721798433U CN208008668U CN 208008668 U CN208008668 U CN 208008668U CN 201721798433 U CN201721798433 U CN 201721798433U CN 208008668 U CN208008668 U CN 208008668U
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- 230000000712 assembly Effects 0.000 claims description 34
- 238000000429 assembly Methods 0.000 claims description 34
- 238000009434 installation Methods 0.000 claims description 25
- 238000012544 monitoring process Methods 0.000 claims description 22
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 5
- 230000001413 cellular effect Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 22
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Abstract
The utility model discloses a kind of differential hot bending systems, it is by using differential hot bending principle, it only needs that the mold of molding is arranged in the lower section of workpiece to be added, it can make workpiece flexural deformation to be added by forming draught head in the both sides of workpiece to be added, reach profiling effect, and the top of workpiece to be added is without using mold, the use cost of mold can thus be reduced, contact of the workpiece to be added with other surfaces of solids can also be reduced, reduce the damage on surface to machined part in forming process, and it can also avoid the problem that damaging mold caused by the pressed form of the lower mold of traditional upper mold-workpiece-to be added, extend the service life of mold, further decrease the use cost of mold.Thus, above-mentioned differential hot bending system can reduce production cost, and can improve the quality of product, can be not limited to use in hot bending of the 2D glass to 3D glass, be with a wide range of applications.
Description
Technical field
The utility model is related to glass processing fields, more particularly, to a kind of differential hot bending system and hot bending
Method.
Background technology
3D glass is becoming increasingly popular as the display panel of mobile terminal, and the new skill such as compatible 5G communications and wireless charging
Glass, ceramics or the devitrified glass back shroud of art match, and have been the development trends of the following industry.The material of different 3D glass
Index request is different, but production technology is essentially identical：I.e. since 2D plate glass, with the graphite jig heat of two-sided basic profiling
Roll forming reaches the hyperbolic or four curved looks of 3D, so implement it is two-sided clear off and chemical tempering, using suitable bend glass
Multistep after processing procedure obtain curved glass panel and rear cover board finished product.
In 3D glass forming process, hot bending is critical process therein.Traditional hot bending process generally comprise preheating, at
2D plate glass is specifically put into the graphite jig of upper and lower two moldings by type, cooling three phases, preheating section gradually by
Then thermal softening is press-formed in profiled section, then realize annealing cooling by cooling section.
Traditional hot bending process is primarily present following problem：
The cost of 1.3D glass finished-products relative to 2D and 2.5D glass increase graphite jig, hot-bending machine and other mating set
It is standby, such as curved surface polishing machine, screen printer, pad printer and make-up machine cost, wherein again based on hot-bending machine cost, because of hot bending
Machine it is complicated, station is more, and the control accuracy requirements such as temperature, pressure position cause the cost of machine accordingly very high.3D glass at
The main product cost of another of product is directly consumed caused by the loss of a large amount of graphite jigs, soft due to graphite,
Its surface finish is not easy to remain behind in hot pressing after reaching requirement, and mold is close to the place such as bent angle in pressing process
Middle stress is maximum to be also easier to occur wearing and be recessed, and the general graphite jig service life is caused not exceed thousands of compactings
Action, the scrappage height of mold, service life are low, cause mold consuming cost high.Thus, the cost of traditional 3D glass finished-products is opposite
It is higher.
2. heating, hot bending in glass bending forming process and three different physical processes of cooling in hot-bending machine structure and
Unify by force in beat, the formation of the nonideality operation and a variety of special defects of glass technology is will also result in, after causing
The increase of section tonnage and cost.
3. the various defects of die surface can be transferred to glass surface in hot pressing, impression or scald etc. are formed, is led
The increase for causing back segment male and fomale(M&F) polishing process difficulty and cost, it is bad to even result in product.
Utility model content
Based on this, it is necessary to provide a kind of differential hot bending that can be reduced product cost and be conducive to improve product quality
Formation system.
A kind of differential hot bending system, including gas supply mechanism, vacuum device and shaping mechanism；The molding machine
Structure includes work chamber, lower mold assemblies, cover assembly, heating component and driving device；The gas supply mechanism and the work
Chamber to the work chamber to provide protective gas, the lower mold assemblies, the cover assembly and the heating component
In the work chamber, the lower mold assemblies have vacuum chamber and are equipped with above to be installed for the mold of installation mold
Position, the vacuum chamber are respectively communicated with the lower section of the mold installation position and the vacuum device, the cover assembly position
It can seal in the top of the lower mold assemblies and with the lower mold assemblies with positive pressure chamber is encircled into, the mold installation position exposes
In the positive pressure intracavitary, the gas supply mechanism be connected to the cover assembly with by the cover assembly to the positive pressure intracavitary
Barotropic gas is provided, top of the heating component for the workpiece to be added out of described mold adds the workpiece to be added
Heat；The driving device connect to drive the cover assembly towards or away from the lower mold assemblies with the cover assembly
Movement.
The lower mold assemblies include lower mould holder and the lower die on the lower mould holder in one of the embodiments,
Air guide pipe die, the lower mould holder are connect with the sealing bottom surface of the work chamber, and the top of the lower die gas-guide tube mould is equipped with
The lower section of the mold installation position, the lower die gas-guide tube mould coordinates the bottom surface of the lower mould holder and the work chamber to surround
The vacuum chamber, the vacuum chamber below gas port on the lower die gas-guide tube mould and the mold installation position by connecting
Logical, the lower die gas-guide tube mould, which is used to seal with the cover assembly, to be coordinated.
The lower mold assemblies are equipped with for being waited for from the lower section of the workpiece to be added described in one of the embodiments,
Workpiece carries out the heat insulation module of heating and thermal insulation.
The heat insulation module includes more infrared heating pipes in one of the embodiments, more of the heat insulation module
Infrared heating pipe is distributed in the lower die gas-guide tube mould.
The cover assembly includes upper cover air guide pipe die and gas-guide tube in one of the embodiments, the gas-guide tube
One end is connected to the gas supply mechanism, and the other end is connected to by the gas port on the upper cover air guide pipe die with the positive pressure chamber；
The driving device is connect with the upper cover air guide pipe die, and the upper cover air guide pipe die can with the lower mold assemblies
Sealing, which is matched, is encircled into the positive pressure chamber.
The cover assembly further includes upper lid support in one of the embodiments, and the top of the upper lid support has
Guide hole, the upper cover air guide pipe die are fixed on the lower section of the upper lid support, the upper cover air guide pipe die and the upper lid support
Between have buffer gap, the gas-guide tube is the bellows being located in the buffer gap and one end passes through the guide hole and institute
State gas supply mechanism connection；The driving device is connect with the upper lid support.
The heating component includes more infrared heating pipes in one of the embodiments, more of the heating component
Infrared heating pipe is distributed in the upper cover air guide pipe die.
In one of the embodiments, the driving device by be actively located in guide rod above the work chamber with
The cover assembly connection, one end of the guide rod is pierced by except the work chamber to be connected with the output shaft of the driving device
It connects, the other end is connect within the work chamber with the cover assembly；Gas port, the air feeder are equipped in the guide rod
Structure is connected to by the gas port of the guide rod with the cover assembly.
The differential hot bending system further includes porous air guide in one of the embodiments, described porous
Air guide is located at the lower section of the cover assembly and opposite with the mold installation position, and the gas supply mechanism passes through the upper cover
Component is connected to the porous air guide to provide barotropic gas to the positive pressure intracavitary by the porous air guide.
The porous air guide includes porous contact heating plate and honeycomb type lamination in one of the embodiments,
Plate, the porous contact heating plate are porous plate-like structure, and the honeycomb type laminate has cellular post holes knot
Structure, the porous contact heating plate have polylith, pass through the honeycomb type laminate between adjacent porous contact heating plate
It separates, and outermost two layers of the porous air guide is the porous contact heating plate.
The gas supply mechanism includes supply air line and the tune that is located on the supply air line in one of the embodiments,
Pneumatic module, one end of the supply air line with air machinery for connecting, the other end and the work chamber and the upper cover group
Part connects, and the regulating the qi flowing in the channels component is adjusted for supplying.
The supply air line includes main supply air line, upper cover supply air line and work chamber in one of the embodiments,
Supply air line, the upper cover supply air line have a plurality of to provide the barotropic gas of different air pressures and flow, the main supply air line
One end for connect with air machinery, the other end and a plurality of upper cover supply air line and work chamber's supply air line company
It connects, multiple upper cover supply air lines are connected to the cover assembly respectively, work chamber's supply air line and the work
Chamber.
Gas flow in the supply air line in one of the embodiments, the regulating the qi flowing in the channels on the main supply air line
Component includes the gentle supply filter of main control valve being sequentially connected in series, and the regulating the qi flowing in the channels component on each upper cover supply air line includes going here and there successively
Pressure maintaining valve, flow control valve and the main control valve of connection, in the pressure maintaining valve and the flow control on each upper cover supply air line
Surge tank is further connected between valve processed, the regulating the qi flowing in the channels component on work chamber's supply air line includes the flow being sequentially connected in series
Control valve and main control valve.
The inlet end of work chamber's supply air line and the institute for providing barometric minimum in one of the embodiments,
The connection of upper cover supply air line is stated, and connection site is between the pressure maintaining valve and the flow control valve.
The main supply air line is equipped with Pressure monitoring element, each upper cover air supply pipe in one of the embodiments,
Road also is provided with gas between the pressure maintaining valve and the flow control valve and between the main control valve and the cover assembly
Monitoring element is pressed, Pressure monitoring element also is provided in work chamber's supply air line or the work chamber.
The vacuum device has vacuum-pumping pipeline and is located at the vacuum-pumping pipeline in one of the embodiments,
On vacuumize adjusting part, one end of the vacuum-pumping pipeline with vaccum-pumping equipment for connect, the other end and the vacuum
Chamber is connected to, and the adjusting part that vacuumizes includes concatenated main control valve and vacuum filter.
The differential hot bending system further includes the first feedback pipe in one of the embodiments, and described first
One end of feedback pipe is connected to the work chamber, and the other end is connect with the vacuum-pumping pipeline, and connection site is located at institute
Between the main control valve and vacuum filter of stating vacuum-pumping tube road, main control valve also is provided on first feedback pipe.
The differential hot bending system further includes the second feedback pipe in one of the embodiments, and described second
One end of feedback pipe is connected to the work chamber, and the other end is connect with the vacuum-pumping pipeline, and connection site is located at institute
It states between the connection site of the first feedback pipe and the vacuum-pumping pipeline and the main control valve of the vacuum-pumping tube road, described
It also is provided with main control valve on two feedback pipes, the connection site of the vacuum-pumping pipeline and first feedback pipe and with described the
Surge tank and another main control valve are additionally provided between the connection site of two feedback pipes.
In one of the embodiments, according to the connection site of the vacuum-pumping pipeline and first feedback pipe and with
The vacuum-pumping pipeline is divided into three sections by the connection site of second feedback pipe, and every section is independently equipped with Pressure monitoring member
Part.
The work chamber is equipped with pressure limiting pipeline in one of the embodiments, and the pressure limiting pipe road is equipped with positive pressure
Pressure limiting valve.
The differential hot bending system further includes push component, the push component in one of the embodiments,
It is located in the work chamber, the push component is used to the mold is pushed into the mold installation position or from the mold
Installation position pulls out.
Because the workpiece surface of reset condition is only the adequate condition that its intensity reaches ideal value, during any hot bending
Surface damage, including scuffing, contact, mark etc., all hallrcuts can be generated on surface, to cause under its fracture strength
It is sliding.Therefore, workpiece to be added and external environment and tool are reduced, the contact of mold is included, could really be efficiently reduced to be processed
The surface defect of part.Compared to traditional die mould method for acting on upper and lower mold using Solid-Solid Surface contact pressure,
Above-mentioned differential hot bending system is by using differential hot bending principle, it is only necessary to be arranged to below workpiece to be added
The lower mold of type can make workpiece flexural deformation to be added by forming draught head in the both sides of workpiece to be added, reach profiling effect
Fruit, and the top of workpiece to be added is without using mold, thus the use cost of mold can be reduced.Due to only needing to use lower die
Tool can also reduce contact of the workpiece to be added with other surfaces of solids by contactless hot bending, reduce in forming process
The damage on surface to machined part reduces impression, improves yield, and can also avoid under traditional upper mold-workpiece-to be added
The problem of being damaged to mold caused by the pressed form of mold extends the service life of mold, further decreases the use of mold
Cost.
The differential hot bending system above workpiece to be added by being heated, and during air pressure profiling, is led to
The heat transfer for crossing workpiece to be added itself carries out hot bending, reaches the local temperature of the workpiece to be added after the completion of profiling action through heat
Conduction declines, and no longer receives the influence of air pressure profiling pressure difference, reduce traditional molding mode because lower part is heated cause it is to be processed
The problem of part lower surface is scalded, and underlaying surface temperature is relatively low, can also avoid mold that surface defect is transmitted to workpiece to be added
Surface, the difficulty and cost being subsequently cold worked can be reduced, improve the quality of product.
Thus, above-mentioned differential hot bending system can reduce production cost, and can improve the quality of product, can
2D glass is not limited to use in the hot bending of 3D glass, is with a wide range of applications.
Description of the drawings
Fig. 1 is the structural schematic diagram of the differential hot bending system of an embodiment；
Fig. 2 is the structural schematic diagram of the porous air guide of an embodiment；
Fig. 3 is the decomposed schematic diagram of porous air guide in Fig. 2；
Fig. 4 is the different working modes using the differential hot bending method of differential hot bending system shown in Fig. 1
Schematic diagram；
Fig. 5 is the flow diagram that profiling is suppressed in convex surface air pressure；
Fig. 6 is the flow diagram that profiling is suppressed in concave surface air pressure.
Specific implementation mode
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can in many different forms come in fact
It is existing, however it is not limited to embodiment described herein.Make public affairs to the utility model on the contrary, purpose of providing these embodiments is
The understanding for opening content is more thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with the technology for belonging to the utility model
The normally understood meaning of technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" includes
Any and all combinations of one or more relevant Listed Items.
As shown in Figure 1, the differential hot bending system 10 of an embodiment includes shaping mechanism 100, gas supply mechanism 200
And vacuum device 300.The differential hot bending system 10 can be used for but be not limited to the hot bending of glass.
In the present embodiment, shaping mechanism 100 includes work chamber 110, lower mold assemblies 120, cover assembly 130, adds
Hot component and driving device 150.Gas supply mechanism 200 is connected to work chamber 110 to provide protection gas to work chamber 110
Body.Lower mold assemblies 120, cover assembly 130 and heating component are located in work chamber 110.Lower mold assemblies 120 have vacuum chamber
(VC) 121 and above be equipped with for installation mold 20 mold installation position (not indicated in figure).Vacuum chamber 121 is pacified with mold
It fills the lower section of position and is respectively communicated with vacuum device 300.Cover assembly 130 is located at the top of lower mold assemblies 120 and can
Match with the sealing of lower mold assemblies 120 and is encircled into positive pressure chamber (PC) 131 (illustrating that the state that positive pressure chamber 131 is opened in figure).When upper
When cap assemblies 130 cooperatively form closed positive pressure chamber 131 with lower mold assemblies 120, mold installation position is exposed in positive pressure chamber 131.
Gas supply mechanism 200 is connected to cover assembly 130 to provide barotropic gas into positive pressure chamber 131 by cover assembly 130.Heating group
It 30 is heated to machined part top of the part for the workpiece to be added 30 out of mold 20.Driving device 150 and cover assembly
130 connections move for driving cover assembly 130 towards or away from lower mold assemblies 120, when cover assembly 130 is towards lower module
When part 120 moves, it can be formed and cooperatively form positive pressure chamber 131；When cover assembly 130 is far from lower mold assemblies 120, positive pressure chamber
131 open, and are connected to work chamber 110.
Specifically, in one embodiment, lower mold assemblies 120 are including lower mould holder 122 and on lower mould holder 122
Lower die gas-guide tube mould 123.The hollow column structure of the substantially both ends open of lower mould holder 122.The lower part of lower mould holder 122 with
The sealing bottom surface of work chamber 110 connects, and sealing ring 124 can such as be arranged between and be sealed.Lower die gas-guide tube mould
123 axial direction has multiple gas ports, forms the air guide channel of porous structure.The top of lower die gas-guide tube mould 123 is equipped with described
Mold installation position.The lower mould holder 122 of lower section cooperation of lower die gas-guide tube mould 123 and the bottom surface of work chamber 110 surround vacuum chamber
121.Vacuum chamber 121 is connected to by the gas port on lower die gas-guide tube mould 123 with the lower section of mold installation position, when to vacuum chamber
121 when being vacuumized, can via on lower die gas-guide tube mould 123 gas port and porous mold 20 in workpiece to be added
30 lower section forms negative pressure, and workpiece 30 to be added is tightly adsorbed in mold 20.Lower die gas-guide tube mould 123 is used for and cover assembly
130 sealings cooperatively form positive pressure chamber 131.
Further, in one embodiment, lower mold assemblies 120 be equipped with for from the lower section of workpiece 30 to be added to be processed
Part 30 carries out the heat insulation module of heating and thermal insulation.In a specific embodiment, heat insulation module includes more infrared heating pipes
161.More infrared heating pipes 161 of heat insulation module are distributed in lower die gas-guide tube mould 123, it is preferred that more infrared heating pipes
161 be far-infrared heating tube, and is uniformly distributed in lower die gas-guide tube mould 123.
In one embodiment, cover assembly 130 includes upper cover air guide pipe die 132 and gas-guide tube 133.Upper cover air guide pipe die
132 have multiple gas ports, form the air guide channel of porous structure.One end of gas-guide tube 133 is connected to gas supply mechanism 200, separately
One end is connected to by the gas port on upper cover air guide pipe die 132 with positive pressure chamber 131.Driving device 150 and upper cover air guide pipe die
132 connections.Upper cover air guide pipe die 132 can be sealed with lower mold assemblies 120 with positive pressure chamber 131 is encircled into, such as diagrammatically shown
In embodiment, positive pressure chamber 131 is cooperatively formed by upper cover air guide pipe die 132 and lower die gas-guide tube mould 123, wherein upper cover
There is seal convexity, the upper end of lower die gas-guide tube mould 123 to have sealed groove, upper cover air guide pipe die for the lower end of air guide pipe die 132
132 can be coordinated with lower die gas-guide tube mould 123 by the seal convexity and sealed groove sealing.
Further, in one embodiment, cover assembly 130 further includes upper lid support 134.The top of upper lid support 134
With guide hole.Upper cover air guide pipe die 132 is fixed on the lower section of lid support 134.Upper cover air guide pipe die 132 and upper lid support 134
Between have buffer gap 135.Gas-guide tube 133 is preferably the bellows being located in buffer gap 135, is used for soft conduction positive pressure
Air-flow, and 133 one end of gas-guide tube is connected to by the guide hole on upper lid support 134 with gas supply mechanism 300.Driving device 150 with it is upper
Lid support 134 connects.
In one embodiment, heating component includes more infrared heating pipes 141.More infrared heating pipes of heating component
141 are distributed in upper cover air guide pipe die 132, it is preferred that more infrared heating pipes 141 are far-infrared heating tube, and are led in upper cover
It is uniformly distributed in tracheae mould 132.
In one embodiment, driving device 150 passes through the guide rod 151 and the upper cover that are actively located in above work chamber
Component 130 connects.One end of guide rod 151 is pierced by the output axis connection with driving device 150, the other end except work chamber 110
It is connect with cover assembly 130 within work chamber 110.Preferably, it is arranged with vacuum sealing flange 152 on guide rod 151.Vacuum
It is sealed respectively by sealing ring 153,154 between the outer wall and work chamber 110 of sealing flange 152 and guide rod 151.Guide rod
Gas port (not indicated in figure) is equipped in 151.Gas supply mechanism 200 is connected by the gas port in guide rod 151 with cover assembly 130
Logical, such as in diagrammatically shown embodiment, gas supply mechanism 200 passes sequentially through gas port, gas-guide tube 133 and upper cover in guide rod 151
The gas port of air guide pipe die 132 is connected to, to apply positive pressure to the top of workpiece 30 to be added by these components.
In a specific embodiment, driving device 150 is telescopic cylinder, by controlling the flexible of its output shaft, energy
Enough control cover assembly 130 is moved towards or away from lower mold assemblies 120.
Further, in an alternative embodiment, as shown in Figures 2 and 3, which also wraps
Include porous air guide 400.Porous air guide 400 is used to be located at the lower section of cover assembly 130 and opposite with mold installation position.
Gas supply mechanism 200 be connected to porous air guide 400 by cover assembly 130 with by porous air guide 400 to positive pressure chamber
Barotropic gas is provided in 131.By setting, porous air guide 400 is set between cover assembly 130 and workpiece to be added 30, it can
So that equably blowing to the surface of workpiece 30 to be added by the thermal current of cover assembly 130, the cold sky caused by convection current is avoided
Gas contacted with glass surface and caused by surface warp.
In one specifically embodiment, porous air guide 400 includes porous contact heating plate 410 and honeycomb type
Laminate 420.Porous contact heating plate 410 is porous plate-like structure, and honeycomb type laminate 420 has cellular column
Pore structure, such as the post holes of hexagonal prism shape can be but not limited to.Porous contact heating plate 410 has polylith, and adjacent is more
It is separated by honeycomb type laminate 420 between hole contact heating plate 410.Outermost two layers of porous air guide 400 is more
Hole contact heating plate 410.In hot bending, the porous contact heating plate 410 of the lower section of porous air guide 400 can be with
The surface of workpiece 30 to be added contacts, to ensure the stability of 30 top temperature of workpiece to be added.More specifically, porous air guide
400 length can be according to compression ratio 15:1 atmospheric pressure makes, to ensure the height gas of 10 times of 30 thickness of workpiece at least to be added
Temperature is constant.
Further, in an alternative embodiment, which further includes push component (figure
Do not show).Push component is located in work chamber 110, for mold 20 to be pushed into mold installation position or is drawn from mold installation position
Go out.
In one embodiment, gas supply mechanism 200 includes supply air line and the regulating the qi flowing in the channels component being located on supply air line.For
For being connect with air machinery 40, the other end is connect with work chamber 110 and cover assembly 130 for 210 one end of air pipe.
In a specific embodiment, supply air line includes main supply air line 211, upper cover supply air line 212 and work
Chamber supply air line 213.Upper cover supply air line 212 has a plurality of to provide the barotropic gas of different air pressures and flow.Main air supply pipe
The one end on road 211 with air machinery 40 for connecting, the other end and a plurality of upper cover supply air line 212 and work chamber's supply air line
213 connections.Multiple upper cover supply air lines 212 are connected to cover assembly 130 respectively, work chamber's supply air line 213 and working chamber
Room 110 is connected to.
More specifically, in one embodiment, according to the of different sizes of the air pressure of offer, upper cover supply air line 212 is shared
Three, it is respectively configured to provide hyperbar, middle air pressure and hypobaric barotropic gas.Three upper cover supply air lines 212 can be distinguished
It is connect with cover assembly 130, common pipeline and cover assembly can also be passed through as shown in Figure 1, in the setting of back segment condominium road
130 connections.
Regulating the qi flowing in the channels component is adjusted for supplying.In one embodiment, the regulating the qi flowing in the channels component on main supply air line 211 is according to gas
Flow direction includes 2111 gentle supply filter 2112 of concatenated main control valve.Regulating the qi flowing in the channels component on each upper cover supply air line 212 is according to gas
Body flow direction includes concatenated pressure maintaining valve 2121, flow control valve 2122 and main control valve 2123.On each upper cover supply air line 212
Surge tank 2124 is further connected between pressure maintaining valve 2121 and flow control valve 2122.On work chamber's supply air line 213
Regulating the qi flowing in the channels component includes concatenated flow control valve 2131 and main control valve 2132 according to gas flow.Each main control valve can mainly be used
In the main control valve of control piper on-off, each flow control valve can be various throttle valves, such as needle-valve, and each pressure maintaining valve is used for
Gas pressure in respective line is maintained to stablize, pressure maintaining valve cooperation surge tank can play good pressure regulation and voltage regulation result.
Further, in one embodiment, the inlet end of work chamber's supply air line 213 with for providing barometric minimum
Upper cover supply air line 212 connects, and connection site is located at correspondingly between pressure maintaining valve 2121 and flow control valve 2122.
Preferably, work chamber's supply air line 213 is used to provide low-voltage variation gas, such as low pressure into work chamber 110
Nitrogen is preferably pressed into the pressure after the protective gas such as nitrogen in work chamber 110 and is no more than 500Pa, namely ensures work chamber
110 for the poor nitrogen state of vacuum, on the one hand need not consume a large amount of protective gas in this way, is mutually protected compared with traditional high nitrogen of positive pressure
It protects, 110 mold 20 is not easy to be destroyed by high-temperature oxydation in work chamber, on the other hand can also reduce heat transfer, reduces heat
Scattering and disappearing to outside work chamber 110, reduces the consumption of nitrogen and electrical heat energy.
Further, in one embodiment, main supply air line 211 is equipped with Pressure monitoring element 2113, and each upper cover supplies
Air pipe 212 is between pressure maintaining valve 2121 and flow control valve 2122 and between main control valve 2123 and cover assembly 130
Equipped with Pressure monitoring element 2125,2126, Pressure monitoring member also is provided on work chamber's supply air line 213 or work chamber 110
Part 2133.By the setting Pressure monitoring element on pipeline correspondingly, the gas pressure in each section of pipeline can be effectively monitored,
It is adjusted convenient for timely feedbacking.
Air machinery 40 can be high pressure nitrogen tank or other source nitrogens, and normal pressure is preferably not less than 15Mpa, and purity is excellent
Select 99% or more.
In one embodiment, vacuum device 300 has vacuum-pumping pipeline 310 and is located in vacuum-pumping pipeline 310
Vacuumize adjusting part.For being connect with vaccum-pumping equipment 50, the other end connects with vacuum chamber for one end of vacuum-pumping pipeline 310
Logical, it includes concatenated main control valve 321 and vacuum filter 322 to vacuumize adjusting part.Vacuum filter 322 is closer to described true
Cavity 121.Vaccum-pumping equipment 50 can be Roots vaccum pump 510 or oil-sealed rotary pump 520, in diagrammatically shown embodiment, take out
Vacuum equipment 50 is the combination of Roots vaccum pump 510 and oil-sealed rotary pump 520, and wherein oil-sealed rotary pump 520 is located at end.
Further, in one embodiment, vacuum device 300 further includes the first feedback pipe 330.First feedback pipe
330 one end is connected to work chamber 110, and the other end is connect with vacuum-pumping pipeline 310, and connection site is located at vacuum-pumping pipeline
On main control valve 321 and vacuum filter 322 between.It also is provided with main control valve 331 on first feedback pipe 330.
Further, in one embodiment, vacuum device 300 also further includes the second feedback pipe 340.Second feedback
One end of pipeline 340 is connected to work chamber 110, and the other end is connect with vacuum-pumping pipeline 310, and connection site is located at first instead
Between main control valve 321 in the connection site and vacuum-pumping pipeline 310 of feedback pipeline 330 and vacuum-pumping pipeline 310.Second feedback
Main control valve 341 also is provided on pipeline 340.The connection site of vacuum-pumping pipeline 310 and the first feedback pipe 330 and with it is second anti-
It is additionally provided with surge tank 323 and another main control valve 324 between the connection site of feedback pipeline 340.
Further, in one embodiment, according to the connection site of vacuum-pumping pipeline 310 and the first feedback pipe 330
And vacuum-pumping pipeline 310 is divided into three sections with the connection site of the second feedback pipe 340, every section is independently equipped with Pressure monitoring
Element, respectively Pressure monitoring element 325, Pressure monitoring element 326 and Pressure monitoring element 327.
Above-mentioned each Pressure monitoring element can be all kinds of pressure gauges, can be mechanical compression table, can also be electron number
Explicit pressure table, partial gas pressure monitoring element is according to installation position, preferably composite pressure measuring device, such as Pressure monitoring element
2133, Pressure monitoring element 325 and air pressure monitoring element 326.
Due to preferably needing to be controlled in nitrogen protection atmosphere in work chamber 110, in one embodiment, work chamber
Pressure limiting pipeline 111 is additionally provided on 110.Pressure limiting pipeline 111 is equipped with positive pressure pressure limiting valve 112, for controlling in work chamber 110
Positive pressure pressure.
In addition, in one embodiment, sensing device is additionally provided in work chamber 110, for incuding workpiece 30 to be added
Whether profiling finishes, and display device can be arranged, to monitor the profiling effect of workpiece 30 to be added in real time.
In one embodiment, which further includes control mechanism, control mechanism and heating component
140, driving device 150 and in each main control valve of gas supply mechanism 200, pressure maintaining valve, flow control valve and pressure monitoring element
At least one and the corresponding component electrical connection of vacuum device 300 reduce artificial behaviour to automatically control each mechanism action
Make error, improves production efficiency.
Present embodiment additionally provides a kind of differential hot bending method, uses the differential of any of the above-described embodiment
Hot bending system 10, the differential hot bending method include the following steps：
It opens gas supply mechanism 200 and is passed through protective gas to work chamber 110, will wait for that the workpiece to be added 30 of hot bending is placed in
In mold 20, and mold 20 is placed on mold installation position；
Controlling the driving device 150 makes cover assembly 130 move downward, and matches with lower mold assemblies 120 and be encircled into positive pressure chamber
131；
Heating component is opened 30 to be heated to machined part from the top of workpiece 30 to be added；
It opens gas supply mechanism 200 and/or vacuum device 300 and forms draught head in the upper and lower both sides of workpiece 30 to be added, lead to
It crosses the draught head and carries out contactless hot bending.
Mold 20 is preferably porous graphite mould.There is specific preformed shape, such as Fig. 5 and Fig. 6 institutes on mold 20
Show, such as with protrusion or groove structure, to obtain the product of different shape requirement.The lower surface of preferred mold 20 has and can lead to
The thermal conductive contact face of coolant such as air or water, in time to mold 20 and thereon workpiece to be added 30 or finished product cool down.
Workpiece 30 to be added can be but not limited to glass.
Preferably, before being put into mold 20, it is also necessary to carry out original state adjusting to differential hot bending system 10
Process, such as cover assembly 130 and lower mold assemblies 120 are preheated, the nitrogen of convenient pressure is filled in work chamber 110
Gas shielded, each main control valve, flow control valve and pressure maintaining valve are adjusted according to preset requirement etc..Preferably, after being passed through protective gas
Pressure in work chamber 110 is no more than 500Pa, namely ensures work chamber 110 for the poor nitrogen state of vacuum, so on the one hand
A large amount of protective gas need not be consumed, are mutually protected compared with traditional high nitrogen of positive pressure, 110 mold 20 is not easy high in work chamber
On the other hand warm Oxidative demage can also reduce heat transfer, reduce heat scattering and disappearing to outside work chamber 110, reduce nitrogen
With the consumption of electrical heat energy.
There is action effect in the part of the general only workpiece to be added 30 to not yet completing profiling of differential pressure of atmospheric pressure formula hot bending, asks
In conjunction with Fig. 4, in one embodiment, during hot bending, including repeatedly opens and closes gas supply mechanism 200 and/or take out
Vacuum mechanism 300 is to repeat 30 to carry out hot bending until meeting expected require to machined part.It in Fig. 4, such as can be according to
The operating mode of curve 1 carry out it is repeated vacuumizes-deflates-vacuuming action, can also according to curve 2 pattern into
Air pressure-deflation of the repeated constant pressure of row-air pressure action can also carry out repeated according to the pattern of curve 3
Air pressure-deflation that pressure gradually increases-air pressure action, or carry out according to the pattern of curve 4 repeated vacuumizing-gas
Pressure-vacuuming action namely the differential hot bending system 10 may be implemented to pass through air feeder in the top of workpiece 30 to be added
Structure 200 individually applies positive pressure, can also individually be vacuumized by vacuum device 300 in the lower section of workpiece 30 to be added, Huo Zheke
To apply positive pressure in such a way that vacuum device 300 is vacuumized and is combined in the upper and lower of workpiece 30 to be added by gas supply mechanism 200
Both sides form pressure difference, to carry out pressure difference profiling.
In addition, during hot bending, it can also be by controlling and adjusting gas supply mechanism 200 and/or vacuum device
300 so that hot bending different periods the step of the both sides of workpiece 30 to be added form different draught heads.By processing
The control of 30 both sides draught heads to machined part in the process, can achieve the effect that fine-tune hot bending process, further
Improve the quality of product.
Above-mentioned differential hot bending system 10 and hot bending method are only needed by using differential hot bending principle
The lower mold of molding is set in the lower section of workpiece 30 to be added, can be made by forming draught head in the both sides of workpiece 30 to be added
Workpiece flexural deformation to be added, reaches profiling effect, and the top of workpiece to be added 30 is without using mold, thus can reduce mold
20 use cost.Due to only needing to use lower mold, contact of the workpiece 30 to be added with other surfaces of solids can also be reduced, is subtracted
The damage on 30 surfaces to machined part in few forming process, and traditional upper mold-workpiece-lower die to be added can also be avoided
The problem of being damaged to mold 20 caused by the pressed form of tool extends the service life of mold 20, further decreases mold 20
Use cost.
The differential hot bending system 10 and hot bending method by being heated in the top of workpiece 30 to be added,
During air pressure profiling, hot bending is carried out by the heat transfer of workpiece 30 to be added itself, reaches and is waited for after the completion of profiling acts
The local temperature of workpiece 0 declines through heat transfer, no longer receives the influence of air pressure profiling pressure difference, reduce traditional molding mode because
The problem of lower part heats and 30 lower surface of workpiece to be added is caused to scald, and underlaying surface temperature is relatively low, can also avoid mold 20
Surface defect is transmitted to the surface of workpiece 30 to be added, the difficulty and cost being subsequently cold worked can be reduced, improve the matter of product
Amount.
Thus, above-mentioned differential hot bending system 10 and hot bending method can reduce production cost, and can be with
The quality for improving product, can be not limited to use in 2D glass to the hot bending of 3D glass, be with a wide range of applications.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (21)
1. a kind of differential hot bending system, which is characterized in that including gas supply mechanism, vacuum device and shaping mechanism；
The shaping mechanism includes work chamber, lower mold assemblies, cover assembly, heating component and driving device；The gas supply mechanism
It is connected to the work chamber to provide protective gas, the lower mold assemblies, the cover assembly and institute to the work chamber
It states heating component to be located in the work chamber, the lower mold assemblies have vacuum chamber and are equipped with above for installation mold
Mold installation position, the vacuum chamber are respectively communicated with the lower section of the mold installation position and the vacuum device, it is described on
Cap assemblies are located at the top of the lower mold assemblies and can be sealed with the lower mold assemblies with positive pressure chamber is encircled into, and the mold is pacified
Dress position is exposed to the positive pressure intracavitary, the gas supply mechanism be connected to the cover assembly with by the cover assembly to described
Positive pressure intracavitary provides barotropic gas, and the heating component is used for the top of the workpiece to be added out of described mold to described to be processed
Part is heated；The driving device connect to drive the cover assembly towards or away from described with the cover assembly
Lower mold assemblies move.
2. differential hot bending system as described in claim 1, which is characterized in that the lower mold assemblies include lower mould holder
With the lower die gas-guide tube mould on the lower mould holder, the lower mould holder is connect with the sealing bottom surface of the work chamber,
The top of the lower die gas-guide tube mould is equipped with the mold installation position, and the lower section of the lower die gas-guide tube mould coordinates the lower die branch
The bottom surface of frame and the work chamber surrounds the vacuum chamber, and the vacuum chamber passes through the gas port on the lower die gas-guide tube mould
It is connected to the lower section of the mold installation position, the lower die gas-guide tube mould, which is used to seal with the cover assembly, to be coordinated.
3. differential hot bending system as claimed in claim 2, which is characterized in that the lower mold assemblies be equipped with for from
The lower section of the workpiece to be added carries out the workpiece to be added the heat insulation module of heating and thermal insulation.
4. differential hot bending system as claimed in claim 3, which is characterized in that the heat insulation module includes more infrared
More infrared heating pipes of heating tube, the heat insulation module are distributed in the lower die gas-guide tube mould.
5. differential hot bending system as described in claim 1, which is characterized in that the cover assembly includes upper cover air guide
Pipe die and gas-guide tube, one end of the gas-guide tube are connected to the gas supply mechanism, and the other end passes through on the upper cover air guide pipe die
Gas port be connected to the positive pressure chamber；
The driving device is connect with the upper cover air guide pipe die, and the upper cover air guide pipe die can be sealed with the lower mold assemblies
With being encircled into the positive pressure chamber.
6. differential hot bending system as claimed in claim 5, which is characterized in that the cover assembly further includes upper cover branch
Frame, the top of the upper lid support have a guide hole, and the upper cover air guide pipe die is fixed on the lower section of the upper lid support, it is described on
There is buffer gap, the gas-guide tube is the ripple being located in the buffer gap between lid air guide pipe die and the upper lid support
It manages and one end is connected to by the guide hole with the gas supply mechanism；The driving device is connect with the upper lid support.
7. differential hot bending system as claimed in claim 5, which is characterized in that the heating component includes more infrared
More infrared heating pipes of heating tube, the heating component are distributed in the upper cover air guide pipe die.
8. differential hot bending system as described in claim 1, which is characterized in that the driving device is worn by activity
Guide rod above the work chamber is connect with the cover assembly, and one end of the guide rod is pierced by except the work chamber
With the output axis connection of the driving device, the other end is connect within the work chamber with the cover assembly；It is described to lead
Gas port is equipped in bar, the gas supply mechanism is connected to by the gas port of the guide rod with the cover assembly.
9. such as differential hot bending system according to any one of claims 1 to 8, which is characterized in that further include porous lead
Gas component, the porous air guide are located at the lower section of the cover assembly and, the gas supply opposite with the mold installation position
Mechanism be connected to the porous air guide by the cover assembly with by the porous air guide to the positive pressure chamber
Interior offer barotropic gas.
10. differential hot bending system as claimed in claim 9, which is characterized in that the porous air guide includes more
Hole contact heating plate and honeycomb type laminate, the porous contact heating plate are porous plate-like structure, the bee
There is socket type laminate cellular post holes structure, the porous contact heating plate to have polylith, adjacent porous contact to add
It is separated by the honeycomb type laminate between hot plate, and outermost two layers of the porous air guide is the porous contact
Formula heating plate.
11. such as differential hot bending system according to any one of claims 1 to 8, which is characterized in that the gas supply mechanism
Including supply air line and the regulating the qi flowing in the channels component being located on the supply air line, one end of the supply air line is used for and air machinery
Connection, the other end are connect with the work chamber and the cover assembly, and the regulating the qi flowing in the channels component is adjusted for supplying.
12. differential hot bending system as claimed in claim 11, which is characterized in that the supply air line includes main gas supply
Pipeline, upper cover supply air line and work chamber's supply air line, the upper cover supply air line have a plurality of to provide different air pressures and stream
The barotropic gas of amount, for being connect with air machinery, the other end is supplied with a plurality of upper cover for one end of the main supply air line
Pipeline is connected with work chamber's supply air line, and a plurality of upper cover supply air line is connected to the cover assembly respectively, institute
Work chamber's supply air line is stated to be connected to the work chamber.
13. differential hot bending system as claimed in claim 12, which is characterized in that the gas in the supply air line
It flows to, the regulating the qi flowing in the channels component on the main supply air line includes the gentle supply filter of main control valve being sequentially connected in series, and each upper cover supplies
Regulating the qi flowing in the channels component on air pipe includes the pressure maintaining valve, flow control valve and main control valve being sequentially connected in series, each upper cover air supply pipe
Road is further connected with surge tank between the pressure maintaining valve and the flow control valve, on work chamber supply air line
Regulating the qi flowing in the channels component include the flow control valve and main control valve being sequentially connected in series.
14. differential hot bending system as claimed in claim 13, which is characterized in that work chamber's supply air line
Inlet end is connect with the upper cover supply air line for providing barometric minimum, and connection site be located at the pressure maintaining valve with it is described
Between flow control valve.
15. differential hot bending system as claimed in claim 13, which is characterized in that the main supply air line is equipped with gas
Monitoring element is pressed, each upper cover supply air line is between the pressure maintaining valve and the flow control valve and in the main control valve
It also is provided with Pressure monitoring element between the cover assembly, is also set in work chamber's supply air line or the work chamber
There is Pressure monitoring element.
16. such as differential hot bending system according to any one of claims 1 to 8, which is characterized in that the evacuator
Structure has vacuum-pumping pipeline and is located at the adjusting part that vacuumizes of the vacuum-pumping tube road, one end of the vacuum-pumping pipeline
For being connect with vaccum-pumping equipment, the other end is connected to the vacuum chamber, and the adjusting part that vacuumizes includes concatenated master control
Valve and vacuum filter, the vacuum filter is closer to the vacuum chamber.
17. differential hot bending system as claimed in claim 16, which is characterized in that further include the first feedback pipe, institute
The one end for stating the first feedback pipe is connected to the work chamber, and the other end is connect with the vacuum-pumping pipeline, and connection site
Between the main control valve and vacuum filter of the vacuum-pumping tube road, main control valve also is provided on first feedback pipe.
18. differential hot bending system as claimed in claim 17, which is characterized in that further include the second feedback pipe, institute
The one end for stating the second feedback pipe is connected to the work chamber, and the other end is connect with the vacuum-pumping pipeline, and connection site
Between first feedback pipe and the connection site and the main control valve of the vacuum-pumping tube road of the vacuum-pumping pipeline,
Also is provided with main control valve on second feedback pipe, the connection site of the vacuum-pumping pipeline and first feedback pipe and with
It is additionally provided with surge tank and another main control valve between the connection site of second feedback pipe.
19. differential hot bending system as claimed in claim 18, which is characterized in that according to the vacuum-pumping pipeline and institute
It states the connection site of the first feedback pipe and the vacuum-pumping pipeline is divided into three with the connection site of second feedback pipe
Section, every section is independently equipped with Pressure monitoring element.
20. such as differential hot bending system according to any one of claims 1 to 8, which is characterized in that the work chamber
It is equipped with pressure limiting pipeline, the pressure limiting pipe road is equipped with positive pressure pressure limiting valve.
21. such as differential hot bending system according to any one of claims 1 to 8, which is characterized in that further include push group
Part, the push component are located in the work chamber, and the push component is used to the mold being pushed into the mold to install
Position is pulled out from the mold installation position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721798433.1U CN208008668U (en) | 2017-12-20 | 2017-12-20 | Differential hot bending system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721798433.1U CN208008668U (en) | 2017-12-20 | 2017-12-20 | Differential hot bending system |
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| CN208008668U true CN208008668U (en) | 2018-10-26 |
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ID=63880904
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109836033A (en) * | 2019-01-04 | 2019-06-04 | 秦皇岛博硕光电设备股份有限公司 | Hot air forming method, hot gas move molding machine and hot gas moves formation system |
| CN109912185A (en) * | 2019-03-22 | 2019-06-21 | 深圳市长盈精密技术股份有限公司 | Devitrified glass rear cover forming method and mold |
| CN112142304A (en) * | 2019-06-27 | 2020-12-29 | Oppo（重庆）智能科技有限公司 | Die-casting die, shell die-casting system, manufacturing method, shell and electronic equipment |
| CN113277879A (en) * | 2021-05-11 | 2021-08-20 | 陈元元 | Equipment and method for correcting bending deformation of microcrystalline ceramic plate |
-
2017
- 2017-12-20 CN CN201721798433.1U patent/CN208008668U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109836033A (en) * | 2019-01-04 | 2019-06-04 | 秦皇岛博硕光电设备股份有限公司 | Hot air forming method, hot gas move molding machine and hot gas moves formation system |
| CN109912185A (en) * | 2019-03-22 | 2019-06-21 | 深圳市长盈精密技术股份有限公司 | Devitrified glass rear cover forming method and mold |
| CN112142304A (en) * | 2019-06-27 | 2020-12-29 | Oppo（重庆）智能科技有限公司 | Die-casting die, shell die-casting system, manufacturing method, shell and electronic equipment |
| CN113277879A (en) * | 2021-05-11 | 2021-08-20 | 陈元元 | Equipment and method for correcting bending deformation of microcrystalline ceramic plate |
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Effective date of registration: 20231119 Address after: 437300 Zhonghuo Guanggu Industrial Heng'er Road, Chibi City, Xianning City, Hubei Province Patentee after: Vidali Automotive Technology Co.,Ltd. Address before: 518129 1st, 2nd, 3rd and 4th floors of 3rd, 4th, 5th and 6th floors, No. 3 Yayuan Road, Bantian street, Longgang District, Shenzhen City, Guangdong Province Patentee before: VITALINK INDUSTRY (SHENZHEN) Co.,Ltd. Patentee before: MAXFORD TECHNOLOGY LTD. |
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