CN109809677B - Processing device and processing method for U-shaped bent toughened glass - Google Patents
Processing device and processing method for U-shaped bent toughened glass Download PDFInfo
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- CN109809677B CN109809677B CN201910272233.XA CN201910272233A CN109809677B CN 109809677 B CN109809677 B CN 109809677B CN 201910272233 A CN201910272233 A CN 201910272233A CN 109809677 B CN109809677 B CN 109809677B
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- 239000005341 toughened glass Substances 0.000 title claims abstract description 74
- 238000012545 processing Methods 0.000 title claims abstract description 37
- 238000003672 processing method Methods 0.000 title claims abstract description 7
- 239000011521 glass Substances 0.000 claims abstract description 127
- 238000010791 quenching Methods 0.000 claims abstract description 56
- 230000000171 quenching effect Effects 0.000 claims abstract description 56
- 238000001816 cooling Methods 0.000 claims abstract description 51
- 238000003825 pressing Methods 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000013003 hot bending Methods 0.000 claims abstract description 25
- 238000005496 tempering Methods 0.000 claims abstract description 25
- 238000000748 compression moulding Methods 0.000 claims abstract description 24
- 238000005096 rolling process Methods 0.000 claims description 36
- 238000007664 blowing Methods 0.000 claims description 31
- 230000007704 transition Effects 0.000 claims description 28
- 238000000465 moulding Methods 0.000 claims description 23
- 238000009826 distribution Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 22
- 238000012797 qualification Methods 0.000 abstract description 3
- 238000009740 moulding (composite fabrication) Methods 0.000 abstract 2
- 238000005452 bending Methods 0.000 description 14
- 230000003287 optical effect Effects 0.000 description 11
- 230000007547 defect Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 206010040925 Skin striae Diseases 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000004880 explosion Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000007689 inspection Methods 0.000 description 5
- 239000005357 flat glass Substances 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000010924 continuous production Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000005347 annealed glass Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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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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Abstract
The invention discloses a processing device and a processing method for U-shaped bent toughened glass, belongs to the technical field of bent glass toughening, and aims to solve the problems of few producible varieties, low qualification rate, discontinuous production and low efficiency of special equipment for U-shaped bent glass. The device comprises a U-shaped compression molding device, a quenching device, a cooling device and a hot bending furnace arranged at the front end of the U-shaped compression molding device, wherein a roller in the furnace is arranged at the bottom of the hot bending furnace; and a U-shaped pressing device matched with the U-shaped supporting device in shape is arranged above the U-shaped supporting device. The method comprises the steps of softening, forming, quenching and tempering and cooling. The invention combines the softening, forming, quenching and cooling links of the U-shaped bent toughened glass, and realizes continuous, efficient and automatic production.
Description
Technical Field
The invention belongs to the technical field of bent glass tempering, and particularly relates to a processing device and a processing method for U-shaped bent tempered glass.
Background
The physical toughened glass is also called as quenched toughened glass, and is prepared by heating common flat glass in a heating furnace to a temperature close to the softening temperature of the glass, eliminating internal stress by self deformation, removing the glass from the heating furnace, and blowing high-pressure cold air to two sides of the glass by using a multi-head nozzle to quickly and uniformly cool the glass to room temperature. After the tempering treatment, the surface of the glass forms uniform compressive stress, while the inside forms tensile stress, so that the bending resistance and impact resistance of the glass are improved, and the strength of the glass is about more than four times that of common annealed glass. The toughened glass after the toughening treatment can not be subjected to any cutting, grinding and other processing or damaged, otherwise, the toughened glass can be crushed into pieces due to the fact that uniform compressive stress balance is damaged, and therefore, the special-shaped glass is toughened immediately after hot bending forming.
The production methods of glass hot-bending toughened glass in the prior art have two types: firstly heating glass in a furnace to enable the glass to reach deformation temperature, then conveying the deformable glass into an air grid through a roll shaft, and performing toughening after obtaining a required shape by bending and forming through the movement of the roll shaft, wherein the equipment cost is high; the hot bending forming mechanism has strict manufacturing requirements and great difficulty; the bending degree of the produced glass often cannot meet the requirement, and some bent glass with special shapes cannot be manufactured. The other is to adopt a mould, put the hot bent toughened glass on the prepared mould, put the hot bent toughened glass into a hearth for heating and then bend and shape, and then convey the hot bent toughened glass into an air grid for cooling and toughening; but the problem of movement in the high-temperature state in the hearth is difficult to solve; and the hot bending tempering furnace can not continuously produce because the hot bending tempering furnace is required to be conveyed into the air grid after the furnace is opened, and the production efficiency is low.
But natural shaping's bending is too big when the tempering of U-shaped crooked glass, in the production of the little radian of some special requirement forms the U-shaped crooked toughened glass of bending, need special auxiliary forming equipment, form and bend the radian that accords with the order requirement and then temper, to realize continuous production, just consider the U-shaped bending mould that can form bending and whole production line to combine, and the production that the U-shaped is bent than L shape bending, need all to form L shape bending at glass's both ends, its degree of difficulty is even more, need have more accurate mould cooperation.
Disclosure of Invention
The invention aims to provide a processing device for U-shaped bent toughened glass, which aims to solve the problem that special equipment is not available for toughening the U-shaped bent glass.
The invention further aims to provide a matched processing method of the processing device for the U-shaped bent toughened glass, so as to solve the problems of discontinuous production and low efficiency of the U-shaped bent toughened glass.
In order to solve the problems, the technical scheme of the invention is as follows:
the processing device of the U-shaped bent toughened glass comprises a U-shaped compression molding device, a quenching device, a cooling device and a hot bending furnace arranged at the front end of the U-shaped compression molding device, wherein a roller in the furnace is arranged at the bottom of the hot bending furnace; a U-shaped pressing device which is matched with the shape of the U-shaped supporting device is arranged right above the U-shaped supporting device, at least two first long rollers and a first short roller are sequentially arranged above the lifting table, and the first long rollers are adjacent to the rollers in the furnace and are flush in height; the quenching device is a group which is arranged up and down symmetrically, one end of the transportation track is positioned between the first long rolling shaft and the first short rolling shaft, the other end of the transportation track penetrates through the hollow position of the quenching device and extends to the upper part of the cooling device, and the width between the transportation track groups is larger than the length of the first short rolling shaft.
Further, the U-shaped supporting device comprises a lower frame, a lower forming supporting plate and a lower forming side plate, wherein the lower forming supporting plate and the lower forming side plate are symmetrically arranged on the lower frame in groups and form a U-shape with an upward opening with the lower frame; the U-shaped pressing device comprises an upper frame, an upper forming pressing plate, an upper forming side plate and a pressing rod, wherein the pressing rod is arranged on the upper frame, and the upper forming pressing plate and the upper forming side plate are symmetrically arranged on the upper frame in groups and form a U shape with the upper frame.
Further, an inclined lower transition plate is arranged between the lower molding supporting plate and the lower molding side plate, and an inclined upper transition plate is arranged between the upper molding pressing plate and the upper molding side plate; the upper transition plate is a flat plate or an arc plate.
Further, a middle supporting plate is arranged in the middle of the lower frame.
Further, a sensor is also arranged on the transportation rail, and the sensor is arranged at the position of the transportation rail at the middle and rear part in the quenching device; limiting blocks are arranged at two ends of the conveying track.
Further, the quenching device comprises at least two groups of air distribution plates which are arranged up and down symmetrically, a plurality of air blowing openings are arranged on the air distribution plates, and air filtering nets are arranged on the surfaces of the air blowing openings.
Further, the cooling device comprises a second short rolling shaft and a second long rolling shaft which are sequentially arranged at the rear end, the second short rolling shaft and the second long rolling shaft are arranged on the lifting supporting table, and the length of the second short rolling shaft is smaller than the inter-group width of the conveying rail.
Further, two ends of the second long rolling shaft are provided with blowing devices.
The processing method for processing the U-shaped bent toughened glass by using the device comprises the following steps:
A. softening:
opening a furnace door of the hot bending furnace, placing glass on a roller in the furnace, closing the furnace door, ensuring the furnace temperature to be 640-670 ℃, softening the glass for 2-6 min, and slowly moving the roller in the furnace forward until one end moves out of the hot bending furnace to be in contact with the first long roller;
B. and (3) forming:
the transportation speed is increased after the glass is transported to the first long roller, the glass is transported to the first short roller, the lifting table falls down, the softened glass falls on a U-shaped supporting device of the U-shaped compression molding device, the U-shaped compression molding device is started, the softened glass is compressed into a U shape and then reset, and the molded glass is rapidly transported to the quenching device on the U-shaped supporting device along with the moving part on a transportation track;
C. quenching and tempering:
the formed U-shaped glass enters the quenching device, the air distribution plates which are arranged up and down symmetrically cool the formed U-shaped glass rapidly through the air blowing openings, when the moving part moves to the sensor, the formed U-shaped glass is controlled to reciprocate back and forth on the conveying track along with the U-shaped supporting device, namely, the formed U-shaped glass moves horizontally relative to the quenching device, and tempering is completed while rapid cooling is performed.
Further, the method also comprises a cooling step, wherein the tempered glass enters a cooling device along the conveying track after the quenching tempering step, the lifting supporting table is lifted, the tempered glass falls on the second short rolling shaft to move to the rear section, and the tempered glass is conveyed to the second long rolling shaft to be cooled by blowing or naturally cooled.
The beneficial effects of the invention are as follows:
(1) According to the device, continuous production of the U-shaped bent toughened glass is realized through the devices corresponding to the four-section process, and the slow movement of the glass is realized through the additionally arranged rollers in the furnace at the bottom of the softening furnace, so that on one hand, the glass is heated and softened more uniformly, and on the other hand, the glass is slowly transported out to be connected with the U-shaped compression molding device, so that integrated production is realized; the softened glass is transported to the first short roller through the first long roller, and because the length of the first short roller is shorter than the distance between the transport track groups, after the lifting platform falls down, the softened glass falls on a U-shaped supporting device of the U-shaped compression molding device, the glass is compressed into a U shape through the U-shaped compression molding device and is rapidly moved to the next working procedure, and in the process, the compression and transport processes are tightly combined, and the whole production process is connected; in the quenching process, the formed U-shaped glass is controlled to reciprocate on a conveying track along with a moving part, prestress is formed on the surface of the glass, the glass is ensured not to crack, and when quenching is finished, glass tempering is finished; transporting the tempered glass to a cooling device again by means of a transporting rail for cooling;
(2) The U-shaped supporting device of the U-shaped compression molding device and the U-shaped bend of the U-shaped compression molding device are both arranged upwards, so that the transportation is convenient, and if the U-shaped opening is downwards, when the U-shaped compression molding device moves on the rolling shafts, the U-shaped bent part can be clamped between the rolling shafts; when the U-shaped opening is upward, the lower part of the finished glass at the production place is smooth, and the transfer is easy; in the order, the middle part of the U-shaped bent glass is required to be partially protruded, when the opening is upward, the dead weight of the glass is just utilized, the softening temperature is raised, the glass naturally drops to achieve the protruded effect, and multiple practices show that the finished product can have a better streamline effect;
(3) The lower transition plate and the upper transition plate are additionally arranged to further meet the requirements of the detail parts of other U-shaped bends, and the U-shaped bends have transition lines, so that the U-shaped bends are better in aesthetic property; in use, a pair of glass thickness dies can meet the processing requirement only by accurate matching; the middle supporting plate plays a role in supporting softened glass in an auxiliary way, and prevents the glass quality from being influenced by larger deformation generated by the gravity action of the middle supporting plate when the softening temperature is slightly higher;
(4) The sensor is arranged to realize the automation of the back and forth reciprocating motion of the formed glass in the quenching process, when the moving part is contacted with the sensor, the moving part is controlled to drive the formed glass to reciprocate back and forth, and the formed glass is continuously moved to a cooling link after the quenching set time is reached; the limiting block ensures that the moving part always moves on the transportation rail; the air filter net can purify the air outlet of the air outlet, so that dust in the air outlet is prevented from falling on the glass which is not completely tempered, and the quality of the glass is prevented from being influenced;
(5) The lifting supporting table of the cooling device can well adjust the heights of the second short rolling shaft and the second long rolling shaft so as to receive the tempered glass and convey the tempered glass to a cooling link; the device is integrated with transportation and cooling, if the product which is required to be completely cooled at the tail end of the production line is transported while blowing, the blowing device at the two ends of the second long rolling shaft can be started, and if the tail end of the production line is provided with a natural cooling space, the blowing device is not started, and the glass can be naturally cooled in transportation;
(6) The method combines the softening, forming, quenching tempering and cooling links of the U-shaped bent tempered glass to realize continuous, efficient and automatic production, and the glass slowly moves in the furnace in the softening link to ensure that the glass is heated uniformly and softened fully, and no obvious temperature difference exists among all areas, thereby laying a foundation for uniform flow forming of the forming link; the forming section and the transportation process are integrated, the glass does not need to be moved to enter a quenching tempering link, the quenching tempering link controls the formed glass to reciprocate back and forth, prestress is better formed on the surface of the glass, the glass is ensured not to be cracked, the yield of a finished product is improved, and the quality of the product is ensured; the final cooling link can adopt air cooling or natural cooling, and finished products are transported out through the second short rolling shaft and the second long rolling shaft, so that the degree of automation is improved.
Drawings
FIG. 1 is a schematic structural view of a processing device for U-shaped bent tempered glass;
FIG. 2 is a schematic view showing an operation state of a processing apparatus for U-shaped bent tempered glass
FIG. 3 is a schematic structural view of a U-shaped press forming device in a processing device for U-shaped bent tempered glass;
FIG. 4 is a schematic view of a U-shaped press forming device in a processing device for U-shaped bent tempered glass;
FIG. 5 is a schematic view showing another structure of a U-shaped press forming device in a processing device of U-shaped bent tempered glass;
FIG. 6 is a schematic view showing another structure of a U-shaped press forming apparatus in a processing apparatus for U-shaped bent tempered glass
FIG. 7 is an enlarged view of a portion A of FIG. 6; the method comprises the steps of carrying out a first treatment on the surface of the
FIG. 8 is a schematic structural view of a quenching apparatus in a processing apparatus for U-shaped bent tempered glass;
FIG. 9 is a schematic view of the lower part of the quenching device in the processing device of the U-shaped bent tempered glass;
fig. 10 is a partial enlarged view of a portion B in fig. 9;
fig. 11 is a schematic structural view of a cooling device in a processing device for U-shaped bent tempered glass.
The reference numerals are as follows: 1. a hot bending furnace; 11. a roller in the furnace; 2. a U-shaped compression molding device; 21. u-shaped supporting device; 22. a U-shaped pressing device; 23. a transfer device; 3. a quenching device; 31. a wind distribution plate; 32. blowing an air port; 33. a gas filtering net; 4. a cooling device; 41. a second short roller; 42. a second long roller; 43. lifting the supporting table; 5. a transport rail; 51. a moving part; 52. a sensor; 53. a limiting block; 6. a lifting table; 61. a first long roller; 62. a first short roller; 7. a lower frame; 71. a lower molding support plate; 72. a lower molding side plate; 73. a lower transition plate; 74. a middle support plate; 8. an upper frame; 81. forming a pressing plate; 82. an upper molding side plate; 83. a transition plate is arranged; 84. a pressurizing rod.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples.
In the present invention, the sensor may be a variety of sensors such as a pressure sensor and a photoelectric sensor, as long as the sensor can measure contact between the moving part on the transportation rail and the sensor.
The device of the invention is different according to the order requirement in each embodiment, and the difference is that the specific detail structure of the L-shaped compression molding device 2 is different, and the general technical characteristics of the rest parts are as shown in figures 1-3 and 8-11:
the processing device of the U-shaped bent toughened glass comprises a U-shaped compression molding device 2, a quenching device 3, a cooling device 4 and a hot bending furnace 1 arranged at the front end of the U-shaped compression molding device 2, wherein an in-furnace roller 11 is arranged at the bottom of the hot bending furnace 1, the U-shaped compression molding device 2 comprises a U-shaped supporting device 21, a U-shaped compression device 22 and a conveying device 23, the conveying device 23 comprises a group of conveying rails 5 and a lifting table 6, limiting blocks 53 are arranged at two ends of the conveying rails 5, a sensor 52 is further arranged on the conveying rails 5, and the sensor 52 is arranged at the position of the conveying rails 5, which are positioned at the middle and rear parts in the quenching device 3; the moving part 51 is arranged on the transportation rail 5, and the U-shaped supporting device 21 is arranged on the moving part 51; a U-shaped pressing device 22 which is matched with the U-shaped supporting device 21 in shape is arranged right above the U-shaped supporting device 21, and the U-shaped supporting device 21 and the matched U-shaped pressing device 22 can be replaced according to different order demands; at least two first long rollers 61 and a first short roller 62 are sequentially arranged above the lifting table 6, and the first long rollers 61 are adjacent to the furnace inner rollers 11 and are flush in height, so that glass can be conveniently transported after being softened; the quenching device 3 is a group which is arranged up and down symmetrically, the quenching device 3 comprises at least two groups of air distribution plates 31 which are arranged up and down symmetrically, a plurality of air blowing openings 32 are arranged on the air distribution plates 31, and air filtering nets 33 are arranged on the surfaces of the air blowing openings 32, so that quenching tempering is realized by up and down air blowing; one end of the transporting rail 5 is positioned between the first long roller 61 and the first short roller 62, and before operation, the transporting rail 5 and the moving part 51 arranged thereon are lower than the first long roller 61 and the first short roller 62; when the lifting table 6 falls down during operation, the conveying rail 5 and the moving part 51 arranged on the conveying rail are lower than the first long rolling shaft 61 and higher than the first short rolling shaft 62, so that glass can be conveyed onto the U-shaped supporting device 21 smoothly, the other end of the conveying rail 5 penetrates through the hollow position of the quenching device 3 and extends to the upper part of the cooling device 4, the inter-group width of the conveying rail 5 is larger than the length of the first short rolling shaft 62, the cooling device 4 comprises a second short rolling shaft 41 and a second long rolling shaft 42 which are sequentially arranged at the rear end, the second short rolling shaft 41 and the second long rolling shaft 42 are arranged on the lifting supporting table 43, the length of the second short rolling shaft 41 is smaller than the inter-group width of the conveying rail 5, and the two ends of the second long rolling shaft 42 are provided with blowing devices similar to the setting reason of the first short rolling shaft 62.
Example 1
As shown in fig. 4, a U-shaped supporting device 21 in a processing device for U-shaped bent tempered glass comprises a lower frame 7, a lower forming supporting plate 71 and a lower forming side plate 72, wherein the lower forming supporting plate 71 and the lower forming side plate 72 are symmetrically arranged on the lower frame 7 in groups and form a U-shape with an upward opening with the lower frame 7; the U-shaped pressing device 22 comprises an upper frame 8, an upper forming pressing plate 81, an upper forming side plate 82 and a pressing rod 84, wherein the pressing rod 84 is arranged on the upper frame 8, and the upper forming pressing plate 81 and the upper forming side plate 82 are symmetrically arranged on the upper frame 8 in groups and form a U shape with the upper frame 8.
In the embodiment, the glass is 1 piece of plate glass with the thickness of 19 mm; the width of the manufactured U-shaped pressing device 22 is 60mm different from the width of the U-shaped supporting device 21, a space for bending two ends of glass upwards is reserved, one end of the U-shaped pressing device is 11mm more, the L-shaped pressing device is pressed downwards, the smaller the reserved distance is, the smaller the error between the produced glass shape and the theoretical design shape is, the smaller the error is almost tiny, the naked eyes can not distinguish the designed shape and the product shape, the error is not visible at all except 1 meter after the installation, but the U-shaped pressing device is inclined in the service direction which is convenient to transport and meets the customization of multiple requirements, the U-shaped opening is upward, the glass falls into the U-shaped supporting device 21 in the processing, a shape with a little edge being outwards expanded, on the basis, if the distance between the U-shaped pressing device 22 and the U-shaped supporting device 21 is strictly sealed with the thickness of the glass, marks are easily left when the glass is pressed, the transmittance of finished glass can be influenced, the error is judged to be a defective product in the normal processing, the error between the U-shaped pressing device 22 and the width of the U-shaped supporting device 21 is not visible at all after the time, the error of the design is found out through multiple study practice, the width of the U-shaped pressing device is more than 5mm, the difference is slightly more than 11mm, the defect is reasonably high in the required to be manufactured, the difference is not accurate, and the defect is not good, and the quality is required to be manufactured, and the difference is slightly high, and the bending is slightly high.
In the embodiment, the sensor is a photoelectric sensor, and an octus C-R series photoelectric sensor is adopted.
A method for processing U-shaped bent toughened glass by using the device comprises the following steps:
A. softening:
the furnace door of the hot bending furnace 1 is opened, glass is placed on the furnace inner roller 11, the furnace door is closed, the furnace temperature is guaranteed to be 640 ℃, the glass is softened for 6 minutes, and the furnace inner roller slowly moves forwards until one end moves out of the hot bending furnace 1 to be in contact with the first long roller 61.
B. And (3) forming:
after the glass is transported to the first long roller 61, the transportation speed is increased, the glass is transported to the first short roller 62, the lifting table 6 drops, the softened glass falls on the U-shaped supporting device 21 of the U-shaped compression molding device 2, the bottom is contacted with the lower molding supporting plate 71, the side edges are lapped on the lower molding side plate 72, the U-shaped compression device 22 is started, the pressure is set, the pressurizing rod 84 is used for pressurizing, the upper frame 8, the upper molding pressing plate 81 and the upper molding side plate 82 are driven to move downwards, the softened glass is reset after being compressed into a U shape, the molded glass is the U-shaped bent glass with sharp line and obvious folding angle, and the molded glass is rapidly transported to the quenching device 3 on the transportation track 5 along with the moving part 51 on the U-shaped supporting device 21.
C. Quenching and tempering:
the formed U-shaped glass enters the quenching device 3, the sensor 52 is triggered, the sensor 52 transmits signals to the controller, the sensor 52 controls the reciprocating motion along with the moving part 51 on the conveying track 5, namely, the relative translation between the formed bent glass and the quenching device 3 is controlled, the air distribution plate 31 which is arranged vertically symmetrically carries out rapid cooling, blowing and cooling on the formed bent glass through the air blowing opening 32, the blowing time is controlled to be 90s, the air pressure is 100Pa, the blowing distance is 60mm, and the tempering is completed while the rapid cooling is carried out.
D. And (3) a cooling step:
after the quenching tempering step, the tempered glass enters the cooling device 4 along the conveying rail 5, the lifting supporting table 43 is lifted, the tempered glass falls on the second short rolling shaft 41 to move to the rear section, and the tempered glass is conveyed to the second long rolling shaft 42 for blowing cooling.
The device and the method can be used for producing more than 150U-shaped bent toughened glass 150 sheets with 19mm thick lines and obvious folding angles in three shifts every day, basically have no explosion phenomenon in the quenching toughening link or in the cooling process, save the time of cleaning the explosion glass fragments and greatly improve the production efficiency.
The produced U-shaped bent toughened glass with sharp lines and obvious folding angles has few defects of the striae, the pits and the white fog, especially at the folding angles, the light transmittance of the lines is good while the striae are sharp, no pressing trace is generated, the optical performance is good, the product qualification rate is as high as 92% through multiple batches of spot inspection, the thicker bent toughened glass is difficult to realize, the optical performance of the thicker bent toughened glass is easy to be degraded, especially the toughened glass which is not transitionally and directly bent is easy to generate the 'inferior quality' of the defects of the striae, the obvious striae at the folding angles, the bulges and the like after bending, but the equipment matching method in the embodiment is verified in the production of a large number of orders, the inspection requirements of the optical performance and the mechanical performance can be met on the basis of ensuring that the glass is not burst, the economic effect is obvious, and the customer response is good.
Example 2
As shown in fig. 5, a U-shaped supporting device 21 in a processing device for U-shaped bent tempered glass comprises a lower frame 7, a lower forming supporting plate 71 and a lower forming side plate 72, wherein the lower forming supporting plate 71 and the lower forming side plate 72 are symmetrically arranged on the lower frame 7 in groups and form a U-shape with an upward opening with the lower frame 7; the U-shaped pressing device 22 comprises an upper frame 8, an upper forming pressing plate 81, an upper forming side plate 82 and a pressing rod 84, wherein the pressing rod 84 is arranged on the upper frame 8, the upper forming pressing plate 81 and the upper forming side plate 82 are symmetrically arranged on the upper frame 8 in groups and form a U shape with the upper frame 8, an inclined lower transition plate 73 is arranged between a lower forming supporting plate 71 and a lower forming side plate 72, and an inclined upper transition plate 83 is arranged between the upper forming pressing plate 81 and the upper forming side plate 82; the upper transition plate 83 is a flat plate, and the middle support plate 74 is provided in the middle of the lower frame 7.
In this example, the glass is 1 piece of plate glass with the thickness of 10 mm; the width difference between the manufactured U-shaped pressing device 22 and the U-shaped supporting device 21 is 36mm, so that space for bending two ends of glass upwards is reserved, one end of the glass is 5mm more, the sensor is a pressure sensor, and an AST2000 type pressure sensor widely communicated by Beijing Rui is adopted.
A method for processing U-shaped bent toughened glass by using the device comprises the following steps:
A. softening:
the furnace door of the hot bending furnace 1 is opened, glass is placed on the furnace inner roller 11, the furnace door is closed, the furnace temperature is guaranteed to be 660 ℃, the glass is softened for 4min, and the furnace inner roller slowly moves forwards until one end moves out of the hot bending furnace 1 to be in contact with the first long roller 61.
B. And (3) forming:
after the glass is transported to the first long roller 61, the transportation speed is increased, the glass is transported to the first short roller 62, the lifting table 6 drops, the softened glass falls on the U-shaped supporting device 21 of the U-shaped compression molding device 2, the bottom is contacted with the lower molding supporting plate 71 and the middle supporting plate 74, the side edges are lapped on the lower molding side plate 72, the U-shaped compression device 22 is started, the pressure is set, the pressurizing rod 84 is used for pressurizing, the upper frame 8, the upper molding pressing plate 81 and the upper molding side plate 82 are driven to move downwards, the softened glass is pressed into a U shape, then the U-shaped bent glass with straight line transition is reset, and the molded glass is rapidly transported to the quenching device 3 on the U-shaped supporting device 21 along with the moving part 51 on the transportation track 5.
C. Quenching and tempering:
the formed U-shaped glass enters the quenching device 3, the sensor 52 is triggered, the sensor 52 transmits signals to the controller, the sensor 52 controls the reciprocating motion along with the moving part 51 on the conveying track 5, namely, the relative translation between the formed bent glass and the quenching device 3 is controlled, the air distribution plate 31 which is arranged vertically symmetrically carries out rapid cooling, blowing and cooling on the formed bent glass through the air blowing opening 32, the blowing time is controlled to be 60s, the air pressure is controlled to be 800Pa, the blowing distance is controlled to be 25mm, and the tempering is completed while the rapid cooling is carried out.
D. And (3) a cooling step:
after the quenching tempering step, the tempered glass enters the cooling device 4 along the conveying rail 5, the lifting supporting table 43 is lifted, the tempered glass falls on the second short rolling shaft 41 to move to the rear section, and the tempered glass is conveyed to the second long rolling shaft 42 for natural cooling.
The device and the method can be used for producing more than 250U-shaped bent toughened glass with the thickness of 10mm and straight line transition by three shifts every day, basically have no explosion phenomenon in the quenching toughening link or in the cooling process, save the time for cleaning the explosion glass fragments and greatly improve the production efficiency.
The produced U-shaped bent toughened glass with straight line transition has few defects of lines, striae, pits and white fog, especially at the corners, the lines are sharp, meanwhile, the light transmittance is good, no pressing trace exists, the optical performance is good, the product qualification rate is as high as 92% after multiple batches of spot inspection, the thicker bent toughened glass is difficult to realize, the optical performance of the thicker bent toughened glass is easy to be degraded, the transition bent U-shaped bent toughened glass is easy to have obvious defects of the indentations at the transition section, but the equipment matching method in the embodiment is verified in the production of a large number of orders, the inspection requirements of the optical performance and the mechanical performance can be met on the basis of ensuring that the glass is not broken, the economic effect is obvious, and the customer response is good.
Example 3
As shown in fig. 6 to 7, a U-shaped supporting device 21 in a processing device for U-shaped bent tempered glass comprises a lower frame 7, a lower forming supporting plate 71 and a lower forming side plate 72, wherein the lower forming supporting plate 71 and the lower forming side plate 72 are symmetrically arranged on the lower frame 7 in groups and form a U-shape with an upward opening with the lower frame 7; the U-shaped pressing device 22 comprises an upper frame 8, an upper forming pressing plate 81, an upper forming side plate 82 and a pressing rod 84, wherein the pressing rod 84 is arranged on the upper frame 8, the upper forming pressing plate 81 and the upper forming side plate 82 are symmetrically arranged on the upper frame 8 in groups and form a U shape with the upper frame 8, an inclined lower transition plate 73 is arranged between a lower forming supporting plate 71 and a lower forming side plate 72, and an inclined upper transition plate 83 is arranged between the upper forming pressing plate 81 and the upper forming side plate 82; the upper transition plate 83 is an arcuate plate. A middle support plate 74 is provided in the middle of the lower frame 7.
In the embodiment, the glass is 1 piece of flat glass with the thickness of 5 mm; the width difference between the manufactured U-shaped pressing device 22 and the U-shaped supporting device 21 is 20mm, so that space for bending two ends of glass upwards is reserved, and one end of the glass is 5mm more.
A method for processing U-shaped bent toughened glass by using the device comprises the following steps:
A. softening:
the furnace door of the hot bending furnace 1 is opened, glass is placed on the furnace inner roller 11, the furnace door is closed, the furnace temperature is ensured to be 670 ℃, the glass is softened for 2 minutes, and the furnace inner roller slowly moves forwards until one end moves out of the hot bending furnace 1 to be in contact with the first long roller 61.
B. And (3) forming:
after the glass is transported to the first long roller 61, the transportation speed is increased, the glass is transported to the first short roller 62, the lifting table 6 drops, the softened glass falls on the U-shaped supporting device 21 of the U-shaped compression molding device 2, the bottom is contacted with the lower molding supporting plate 71 and the middle supporting plate 74, the side edges are lapped on the lower molding side plate 72, the U-shaped compression device 22 is started, the pressure is set, the pressurizing rod 84 is used for pressurizing, the upper frame 8, the upper molding pressing plate 81 and the upper molding side plate 82 are driven to move downwards, the softened glass is pressed into a U shape, then the U-shaped bent glass with arc transition is reset, and the molded glass is rapidly transported to the quenching device 3 on the U-shaped supporting device 21 along with the moving part 51 on the transportation track 5.
C. Quenching and tempering:
when the formed U-shaped glass enters the quenching device 3, and the moving part 51 moves to the middle position of the quenching device 3, the moving part 51 is manually controlled to reciprocate on the conveying track 5, namely, the formed U-shaped bent glass with arc transition is controlled to relatively translate with the quenching device 3, the air distribution plates 31 which are arranged vertically symmetrically cool the formed U-shaped bent glass through the air blowing openings 32, the air blowing time is controlled to be 40s, the air pressure is 3000Pa, the air blowing distance is 12mm, and the tempering is completed while the quick cooling is performed.
The device and the method can be used for producing more than 300U-shaped bent toughened glass 300 sheets with arc transition and 5mm thickness in three shifts per day, basically have no explosion phenomenon in the quenching toughening link or in the cooling process, save the time of cleaning the explosion glass fragments and greatly improve the production efficiency.
The produced U-shaped bent toughened glass with arc transition has almost no defects of the striae, the pits and the white fog, especially the fold angle, has good streamline and light transmittance, no pressing trace, good optical performance, and obvious economic effect, and the thinner and bigger glass has more difficult control of production quality, the harder the optical performance requirement is realized, the easier the optical performance defect is exposed, and the U-shaped bent toughened glass with arc transition has the obvious defects of the striae in the transition section, but the equipment matching method in the embodiment is verified in the production of a large number of orders, can meet the inspection requirements of the optical performance and the mechanical performance on the basis of ensuring that the glass is not burst, has obvious economic effect, has good customer response, and gains wide attention in market with good optical performance after installation.
Claims (9)
1. The utility model provides a processingequipment of toughened glass is bent to U-shaped, includes U-shaped compression moulding device (2), rapid cooling device (3), cooling device (4), its characterized in that: the hot bending furnace is characterized by further comprising a hot bending furnace (1) arranged at the front end of the U-shaped compression molding device (2), an in-furnace roller (11) is arranged at the bottom of the hot bending furnace (1), the U-shaped compression molding device (2) comprises a U-shaped supporting device (21), a U-shaped compression device (22) and a conveying device (23), the conveying device (23) comprises a group of conveying rails (5) and a lifting table (6), a moving part (51) is arranged on the conveying rails (5), and the U-shaped supporting device (21) is arranged on the moving part (51); the device is characterized in that a U-shaped pressing device (22) which is matched with the U-shaped supporting device in shape is arranged right above the U-shaped supporting device (21), at least two first long rollers (61) and first short rollers (62) are sequentially arranged above the lifting table (6), and the first long rollers (61) are adjacent to the furnace inner rollers (11) and are flush in height; the quenching device (3) is a group which is vertically and symmetrically arranged, one end of the transportation rail (5) is positioned between the first long rolling shaft (61) and the first short rolling shaft (62), the other end of the transportation rail (5) passes through the hollow position of the quenching device (3) and extends to the upper part of the cooling device (4), and the width between the transportation rail (5) groups is larger than the length of the first short rolling shaft (62);
the U-shaped supporting device (21) comprises a lower frame (7), a lower forming supporting plate (71) and a lower forming side plate (72), wherein the lower forming supporting plate (71) and the lower forming side plate (72) are symmetrically arranged on the lower frame (7) in groups and form a U-shaped with an upward opening with the lower frame (7);
the U-shaped pressing device (22) comprises an upper frame (8), an upper forming pressing plate (81), an upper forming side plate (82) and a pressing rod (84), wherein the pressing rod (84) is arranged on the upper frame (8), and the upper forming pressing plate (81) and the upper forming side plate (82) are symmetrically arranged on the upper frame (8) in groups and form a U shape with the upper frame (8).
2. A processing device for U-shaped bent tempered glass according to claim 1, wherein an inclined lower transition plate (73) is provided between the lower molding support plate (71) and the lower molding side plate (72), and an inclined upper transition plate (83) is provided between the upper molding press plate (81) and the upper molding side plate (82); the upper transition plate (83) is a flat plate or an arc plate.
3. A processing apparatus for U-shaped bent tempered glass as claimed in claim 1 or 2, wherein: a middle supporting plate (74) is arranged in the middle of the lower frame (7).
4. A processing apparatus for U-bend tempered glass as claimed in claim 3, wherein: the conveying rail (5) is also provided with a sensor (52), and the sensor (52) is arranged at the middle and rear part of the conveying rail (5) in the quenching device (3); limiting blocks (53) are arranged at two ends of the conveying track (5).
5. The processing apparatus for U-shaped bent tempered glass as claimed in claim 4, wherein: the quenching device (3) comprises at least two groups of air distribution plates (31) which are arranged up and down symmetrically, a plurality of air blowing openings (32) are arranged on the air distribution plates (31), and air filtering nets (33) are arranged on the surfaces of the air blowing openings (32) up and down.
6. The processing apparatus for U-shaped bent tempered glass as claimed in claim 5, wherein: the cooling device (4) comprises a second short roller (41) and a second long roller (42) which are sequentially arranged at the rear end, the second short roller (41) and the second long roller (42) are arranged on a lifting supporting table (43), and the length of the second short roller (41) is smaller than the inter-group width of the conveying track (5).
7. The processing apparatus for U-shaped bent tempered glass as claimed in claim 6, wherein: and blowing devices are arranged at two ends of the second long rolling shaft (42).
8. A processing method for processing U-shaped bent tempered glass by using the processing apparatus according to any one of claims 1 to 7, characterized in that: the method comprises the following steps:
A. softening:
opening a furnace door of the hot bending furnace (1), placing glass on a roller (11) in the furnace, closing the furnace door, ensuring the furnace temperature to be 640-670 ℃, softening the glass for 2-6 min, and slowly moving the roller in the furnace forward until one end moves out of the hot bending furnace (1) to be in contact with the first long roller (61);
B. and (3) forming:
the transportation speed is increased after the glass is transported to the first long roller (61), the glass is transported to the first short roller (62) immediately, the lifting table (6) falls, the softened glass falls on the U-shaped supporting device (21) of the U-shaped compression molding device (2), the U-shaped compression device (22) is started, the softened glass is reset after being compressed into a U shape, and the molded glass is rapidly transported to the quenching device (3) on the transportation track (5) along with the moving part (51) on the U-shaped supporting device (21);
C. quenching and tempering:
the formed U-shaped glass enters the quenching device (3), the air distribution plates (31) which are arranged vertically symmetrically cool the formed U-shaped glass rapidly through the air blowing openings (32), when the moving part (51) moves to the sensor (52), the formed U-shaped glass is controlled to reciprocate on the conveying track (5) along with the U-shaped supporting device (21), namely, the formed U-shaped glass moves relatively and horizontally with the quenching device (3), and tempering is completed while rapid cooling.
9. The method for processing U-shaped bent tempered glass as claimed in claim 8, wherein: the method further comprises a cooling step, wherein the tempered glass enters a cooling device (4) along a conveying track (5) after the quenching tempering step, a lifting supporting table (43) is lifted, the tempered glass falls on a second short roller (41) to move to the rear section, and the tempered glass is conveyed to a second long roller (42) for air blowing cooling or natural cooling.
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| CN113788608B (en) * | 2021-09-26 | 2023-05-16 | 中方县明兴玻璃有限公司 | Forming method of cold-bent glass and cold-bent glass |
| CN113639569A (en) * | 2021-10-14 | 2021-11-12 | 高域智能卫浴科技(江苏)有限公司 | Temperature control system of inferior gram force softening furnace of preparation children's bathtub |
| CN116854351B (en) * | 2023-07-07 | 2024-03-12 | 安徽东大钢化玻璃有限公司 | Production equipment for efficiently and automatically producing U-shaped toughened glass |
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| US5143535A (en) * | 1991-07-19 | 1992-09-01 | Libbey-Owens-Ford Co. | Method of and apparatus for bending glass sheets |
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