CN210595784U - Horizontal roller table type dinner plate forming toughening furnace - Google Patents
Horizontal roller table type dinner plate forming toughening furnace Download PDFInfo
- Publication number
- CN210595784U CN210595784U CN201921326693.8U CN201921326693U CN210595784U CN 210595784 U CN210595784 U CN 210595784U CN 201921326693 U CN201921326693 U CN 201921326693U CN 210595784 U CN210595784 U CN 210595784U
- Authority
- CN
- China
- Prior art keywords
- glass
- tempering
- furnace body
- heating
- toughening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 235000003166 Opuntia robusta Nutrition 0.000 title claims abstract description 38
- 244000218514 Opuntia robusta Species 0.000 title claims abstract description 38
- 238000005496 tempering Methods 0.000 claims abstract description 61
- 238000010438 heat treatment Methods 0.000 claims abstract description 55
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 238000007493 shaping process Methods 0.000 claims abstract description 11
- 238000005485 electric heating Methods 0.000 claims description 21
- 238000007664 blowing Methods 0.000 claims description 10
- 238000010791 quenching Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 230000000171 quenching effect Effects 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000005350 fused silica glass Substances 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 239000011521 glass Substances 0.000 abstract description 72
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 239000012634 fragment Substances 0.000 abstract description 2
- 239000005357 flat glass Substances 0.000 description 14
- 238000002360 preparation method Methods 0.000 description 6
- 239000005341 toughened glass Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000007688 edging Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000005347 annealed glass Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The utility model provides a horizontal roller formula dinner plate shaping tempering furnace, it relates to a tempering furnace, levels device, tempering blast apparatus, tempering cooling device, lower piece platform and braced frame including last piece platform, conveyer, heating furnace body, mould forming device, mould, and its process flow is: preparing glass; tempering the glass and uniformly heating; shaping the glass mold; flattening the glass mold; cooling and toughening the glass mold by cold air; and (5) detecting and measuring the glass mold. The utility model discloses main drive comprises last fragment, heating section, through section and cooling zone, and process flow is incessant in succession, adopts unbounded dynamic rate and temperature control to reduce the change of temperature field ladder, makes the heat absorption in same piece of glass different regions more even, improves glass's roughness, and glass tempering is effectual, and the high quality, and has improved whole glass tempering productivity, and work efficiency is high.
Description
Technical Field
The utility model relates to a toughened glass technical field specifically is a horizontal roller formula dinner plate shaping tempering furnace and production technology thereof.
Background
The tempering furnace usually adopts physical glass tempering equipment to heat and then quench the flat glass, so that the cooled glass surface layer forms compressive stress and the glass interior forms tensile stress, thereby achieving the purpose of improving the glass strength and enabling the common annealed glass to become the equipment for tempering the glass. The tempering mode does not change the chemical composition of the glass, so the glass tempering device is called a physical glass tempering device. If the equipment is classified according to the heating mode characteristics of the equipment, the equipment can be classified into forced convection heating toughening equipment and radiation heating toughening equipment; if divide according to the structure, the functional characteristic of equipment, then can divide into combination formula tempering equipment, flat tempering equipment, curved toughened glass equipment, continuous tempering equipment, two-way formula tempering equipment, hang stove etc. current tempering furnace is given first place to the isolated operation, and the function is single, and most adoption constant temperature heating toughened glass, and the quality that the glass that prepares often can lead to because of being heated inhomogeneous is not high, consequently needs a tempering furnace of design to solve above problem.
Disclosure of Invention
An object of the utility model is to provide a horizontal roller formula dinner plate shaping tempering furnace and production technology to solve the problem that provides among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a horizontal roller formula dinner plate shaping tempering furnace, includes piece platform, conveyer, heating furnace body, mould forming device, mould level device, tempering blast apparatus, tempering cooling device, piece platform and braced frame down, the piece platform sets up in conveyer one end, the conveyer other end is provided with mould forming device, heating furnace body installs on braced frame, just conveyer sets up in heating furnace body stove, the mould levels the device and sets up in the mould forming device left end, the mould forming device right-hand member is provided with tempering blast apparatus, tempering blast apparatus right-hand member is provided with tempering cooling device, tempering cooling device right-hand member is provided with piece platform down.
Furthermore, the conveying device is in transmission orthogonal arrangement by adopting a circular belt, and a conveying roller way made of fused quartz ceramic is selected as a conveying belt of the conveying device.
Furthermore, the heating furnace body is externally welded by section steel and steel plates to form a shell, the heating furnace body is internally composed of an electric heating wire, a radiation plate and a temperature measuring plate of a heating main part in the furnace, and a temperature zone is arranged in the heating furnace body and is divided into an upper furnace body and a lower furnace body.
Furthermore, the tempering and blowing device is composed of a centrifugal fan, an upper quenching air collecting box, a lower quenching air collecting box and a plurality of quenching air nozzles.
A production process of a horizontal roller way type dinner plate forming toughening furnace is characterized by comprising the following steps:
step 1: and (3) placing the glass on a sheet feeding table after screening, cutting, edging, perforating, cleaning and drying.
Step 2: the glass on the upper plate table is conveyed into the heating furnace body through the conveying device, the roller way of the glass in the furnace moves, the step change of a temperature field is reduced by using the infinite dynamic rate and temperature control, so that the heat absorption of different areas of the same piece of glass is more uniform, and the upper furnace body and the lower furnace body are respectively heated.
And step 3: the heated glass is conveyed to a mould forming device through a roller way in the furnace to carry out dinner plate forming.
And 4, step 4: and (4) continuously conveying the shaped formed dinner plate glass to a mould flattening device for carrying out surface flattening treatment.
And 5: and continuously conveying the flattened dinner plate glass to a tempering blowing device and a tempering cooling device for quenching air tempering cooling treatment.
Step 6: and (4) checking and measuring the cooled dinner plate glass, and warehousing.
Preferably, in the step (2), the temperature of the upper furnace body in the heating furnace body (3) is 680-740 ℃.
Preferably, in the step (2), the temperature of the lower furnace body in the heating furnace body (3) is 750-810 ℃.
Preferably, in the step (5), the cooling time of the cooling treatment is 17 to 28 seconds.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a, this kind of horizontal roller formula dinner plate shaping tempering furnace adopts unbounded dynamic rate and temperature control to reduce the temperature field step change, it is more even to make the heat absorption in same piece of glass different regions, improve glass's roughness, wherein the heating furnace body comprises shaped steel and steel sheet welding shell, heat-resisting corrosion resistant plate avoids high temperature oxidation to warp its both ends, the heating furnace body sets up to the structure that opens and shuts from top to bottom, go up the vertical lift of furnace body, dispose one set of electric lift device, so that carry out the maintenance in the stove, adopt heating element to set up airborne temperature display and control point in the stove.
The glass transmission of the heating furnace body of the horizontal roller-way type dinner plate forming toughening furnace adopts the orthogonal arrangement of circular belt transmission, so that the glass runs stably, the conveying roller way in the furnace made of fused quartz ceramic is utilized, the furnace has good temperature shock resistance, the heating furnace is allowed to rapidly heat up, the glass moves on the roller way in the furnace, the stroke of the glass can be adjusted according to the shape and the length of the glass, the heat in the furnace is ensured to be uniformly absorbed, the heating furnace body is provided with temperature zones, and each temperature zone and the actual heating power are independently controlled and adjusted through manual device data, so that the glass is uniformly heated.
Drawings
FIG. 1 is a schematic structural view of a horizontal roller-type dinner plate forming and toughening furnace of the present invention;
FIG. 2 is a process flow diagram of a horizontal roller-type dinner plate forming and toughening furnace of the present invention;
FIG. 3 is a schematic structural view of a conveying device of the horizontal roller-type dinner plate forming and toughening furnace of the present invention;
FIG. 4 is a schematic view of the structure of the heating furnace body of the horizontal roller-type dinner plate forming and toughening furnace of the present invention
Fig. 5 is a schematic structural view of a tempering and blowing device blower of a horizontal roller-way type dinner plate forming tempering furnace of the present invention.
In the reference symbols: 1-a loading table; 2-a transfer device; 3-heating the furnace body; 31-electric heating plate A; 32-electric heating plate B; 33-conveying roller table; 4-a mold forming device; 5-a mould flattening device; 6-tempering and blowing devices; 7-tempering and cooling device; 8-a sheet discharging table; 9-supporting the frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a horizontal roller formula dinner plate shaping tempering furnace, includes film loading platform 1, conveyer 2, heating furnace body 3, mould forming device 4, mould level device 5, tempering blast apparatus 6, tempering cooling device 7, lower film loading platform 8 and braced frame 9, film loading platform 1 sets up in 2 one ends of conveyer, the 2 other ends of conveyer are provided with mould forming device 4, heating furnace body 3 installs on braced frame 9, just conveyer 2 sets up in 3 stoves of heating furnace body, mould level device 5 sets up in 4 left ends of mould forming device, 4 right-hand members of mould forming device are provided with tempering blast apparatus 6, 6 right-hand members of tempering blast apparatus are provided with tempering cooling device 7, tempering cooling device 7 right-hand members are provided with lower film loading platform 8.
Further, the conveying device 2 is in transmission orthogonal arrangement by adopting a circular belt, and a conveying roller way made of fused quartz ceramic is selected as a conveying belt of the conveying device 2.
Further, the heating furnace body 3 is externally welded by section steel and steel plates to form a shell, the heating furnace body is internally welded by an electric heating wire, a radiation plate and a temperature measuring plate of a heating main part in the furnace, and a temperature zone is arranged in the heating furnace body 3 and is divided into an upper furnace body and a lower furnace body.
Example 1
The utility model provides a preparation process of a horizontal roller table type dinner plate forming toughening furnace.
A preparation process of toughened glass comprises the following steps:
step 1: screening glass, selecting glass with the thickness of 1-3mm, sequentially cutting, edging, perforating, cleaning and drying the glass, and then placing the glass on a sheet loading table;
step 2: the glass on the upper table is conveyed into a heating furnace body through a conveying device, the roller way of the glass in the furnace moves, the step change of a temperature field is reduced by using the infinite rate and temperature control, so that the heat absorption of different areas of the same piece of glass is more uniform, because the thickness of the glass is 1-3mm, a four-step temperature gradient is selected, the glass enters a heating furnace body 2, the glass moves on a conveying roller way 33 and is heated by electric heating wires on an electric heating plate A31 and an electric heating plate B32 in sequence, the temperature is set and regulated by a heating main part temperature measuring plate in the heating furnace body 2, the upper furnace body adopts four temperature regions of 680 ℃, 695 ℃, 705 ℃ and 715 ℃ to heat the glass in sequence, and the lower furnace body adopts six temperature regions of 750 ℃, 765 ℃, 775 ℃ and 785 ℃ to heat the glass in sequence, so as to finish;
and step 3: the heated glass is conveyed to a mould forming device through a roller way in the furnace to carry out dinner plate shaping;
and 4, step 4: the shaped formed dinner plate glass is continuously conveyed to a mould flattening device for carrying out surface flattening treatment;
and 5: the dinner plate glass after the leveling treatment is continuously conveyed to a tempering blowing device and a tempering cooling device, and is subjected to rapid cooling air tempering cooling treatment for 18 s;
step 6: and (4) carrying out glass inspection and measurement on the cooled dinner plate glass, and then warehousing.
Example 2
The utility model provides a preparation process of a horizontal roller table type dinner plate forming toughening furnace.
A preparation process of toughened glass comprises the following steps:
step 1: screening glass, selecting the glass with the thickness of 3-5mm, sequentially cutting, edging, perforating, cleaning and drying, wherein the glass needs to be continuously washed by clear water and placed on a sheet loading table while perforating;
step 2: the glass on the upper table is conveyed into a heating furnace body through a conveying device, the roller way of the glass in the furnace moves, the step change of a temperature field is reduced by using the infinite rate and temperature control, so that the heat absorption of different areas of the same piece of glass is more uniform, the glass is heated by electric heating wires on an electric heating plate A31 and an electric heating plate B32 sequentially due to the fact that the thickness of the glass is 3-5mm, a six-step temperature gradient is selected, the glass enters the heating furnace body 2, the glass moves on a conveying roller way 33 and is heated by electric heating wires on the electric heating plate A31 and the electric heating plate B32, the temperature is set and regulated by a heating main part temperature measuring plate in the heating furnace body 2, the upper furnace body is sequentially heated by six temperature zones of 680 ℃, 695 ℃, 705 ℃, 715 ℃ and 720 ℃ and 725 ℃, and the lower furnace body is sequentially heated by six temperature zones of 750 ℃, 765;
and step 3: the heated glass is conveyed to a mould forming device through a roller way in the furnace to carry out dinner plate shaping;
and 4, step 4: the shaped formed dinner plate glass is continuously conveyed to a mould flattening device for carrying out surface flattening treatment;
and 5: the dinner plate glass after the leveling treatment is continuously conveyed to a tempering blowing device and a tempering cooling device, and is subjected to rapid cooling air tempering cooling treatment for 23 s;
step 6: and (4) checking and measuring the cooled dinner plate glass, and warehousing.
Example 3
The utility model provides a preparation process of a horizontal roller table type dinner plate forming toughening furnace.
A preparation process of toughened glass comprises the following steps:
step 1: selecting glass with the thickness of 5-8mm, cutting an original sheet with a larger size by using diamond according to the size of a required product, polishing the edge of the glass smoothly by using a grinding head double-circular edge machine, carrying out hole opening treatment on the glass, setting the size of an opening according to specific requirements, finally cleaning, drying and placing on a sheet loading table;
step 2: the glass on the upper table is conveyed into a heating furnace body through a conveying device, a temperature zone is arranged in the furnace, the roller way of the glass in the furnace moves, the step change of a temperature field is reduced by using the infinite rate and temperature control, so that the heat absorption of different areas of the same piece of glass is more uniform, the glass is uniformly heated by using eight-step temperature gradients due to the adoption of the thickness of the glass of 5-8mm, the glass enters the heating furnace body 2, the glass moves on a conveying roller way 33 and is sequentially heated by electric heating wires on an electric heating plate A31 and an electric heating plate B32, the temperature is set and regulated by a heating main part temperature measuring plate in the heating furnace body 2, the upper furnace body is heated by adopting eight groups of temperature zones 680 ℃, 695 ℃, 705 ℃, 715 ℃, 720 ℃, 725 ℃, 730 ℃ and 740 ℃ sequentially, the lower furnace body is heated by adopting eight groups of temperature zones 750 ℃, 765 ℃, 775 ℃, 785 ℃, 790 ℃, 795 ℃, 800 ℃ and 810 ℃, completing heating;
and step 3: the heated glass is conveyed into a mould forming device through a roller way in the furnace, the size and position adjustment part is formed, and a flat plate tempering passage section is used for shaping a dinner plate;
and 4, step 4: the shaped formed dinner plate glass is continuously conveyed to a mould flattening device, and the surface of the formed dinner plate glass is flattened through a roller way and the upper surface and the lower surface of a lifting flattening table;
and 5: the dinner plate glass after the leveling treatment is continuously conveyed to a tempering blowing device and a tempering cooling device for carrying out quenching air tempering cooling treatment, and after the product is molded, leveled and physically tempered, the temperature of the product is reduced at high temperature;
step 6: and after the rapid cold air tempering treatment, cooling for 20s, and finally, checking and measuring the shaped plate glass and warehousing.
The utility model discloses main drive comprises last fragment, heating section, through section and cooling zone, and process flow is incessant in succession, adopts unbounded dynamic rate and temperature control to reduce the change of temperature field ladder, makes the heat absorption in same piece of glass different regions more even, improves glass's roughness, and glass tempering is effectual, and the high quality, and has improved whole glass tempering productivity, and work efficiency is high.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a horizontal roller formula dinner plate shaping tempering furnace, includes piece platform (1), conveyer (2), heating furnace body (3), mould forming device (4), mould level device (5), tempering blast apparatus (6), tempering cooling device (7), piece platform (8) and braced frame (9) down, its characterized in that: the sheet feeding platform (1) is arranged at one end of the conveying device (2), the other end of the conveying device (2) is provided with a mold forming device (4), the heating furnace body (3) is installed on the supporting frame (9), an electric heating plate A (31), an electric heating plate B (32) and a conveying roller way (33) are arranged inside the heating furnace body (3), the conveying device (2) is arranged in the heating furnace body (3), the mold leveling device (5) is arranged at the left end of the mold forming device (4), the right end of the mold forming device (4) is provided with a toughening blowing device (6), the right end of the toughening blowing device (6) is provided with a toughening cooling device (7), and the right end of the toughening cooling device (7) is provided with a sheet discharging platform (8).
2. The horizontal roller-table dinner plate forming toughening furnace of claim 1, characterized in that: the conveying device (2) is in transmission orthogonal arrangement by adopting a circular belt, and a conveying roller way made of fused quartz ceramic is selected as a conveying belt of the conveying device (2).
3. The horizontal roller-table dinner plate forming toughening furnace of claim 1, characterized in that: the heating furnace body (3) is externally welded by section steel and steel plates to form a shell, the internal electric heating plates A (31) and B (32) are composed of electric heating wires, radiation plates and a furnace internal heating main part temperature measuring plate, the electric heating plates A (31) and B (32) are arranged on a transmission roller way (33) in a sliding mode, a temperature area is arranged inside the heating furnace body, and the heating furnace body (3) is divided into an upper furnace body and a lower furnace body.
4. The horizontal roller-table dinner plate forming toughening furnace of claim 1, characterized in that: the tempering and blowing device (6) is composed of a centrifugal fan, an upper quenching air collecting box and a lower quenching air collecting box, and a plurality of quenching air nozzles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921326693.8U CN210595784U (en) | 2019-08-16 | 2019-08-16 | Horizontal roller table type dinner plate forming toughening furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921326693.8U CN210595784U (en) | 2019-08-16 | 2019-08-16 | Horizontal roller table type dinner plate forming toughening furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210595784U true CN210595784U (en) | 2020-05-22 |
Family
ID=70713915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921326693.8U Expired - Fee Related CN210595784U (en) | 2019-08-16 | 2019-08-16 | Horizontal roller table type dinner plate forming toughening furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210595784U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110386755A (en) * | 2019-08-16 | 2019-10-29 | 王德海 | A kind of horizontal roller formula service plate annealing furnace and its production technology |
-
2019
- 2019-08-16 CN CN201921326693.8U patent/CN210595784U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110386755A (en) * | 2019-08-16 | 2019-10-29 | 王德海 | A kind of horizontal roller formula service plate annealing furnace and its production technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3756797A (en) | Method and apparatus for bending a sheet of glass | |
| US3468645A (en) | Method and apparatus for shaping glass sheets supported on a gas support bed | |
| KR101602545B1 (en) | Method and device for bending sheets | |
| US4272274A (en) | Slotted glass sheet shaping mold | |
| CN110386755A (en) | A kind of horizontal roller formula service plate annealing furnace and its production technology | |
| EA030887B1 (en) | Method and device for bending panes | |
| US3607187A (en) | Method and apparatus for reshaping glass sheets | |
| KR101467082B1 (en) | Heat treat apparatus for tempering a thin glass | |
| JPH0797227A (en) | Bending and tempering method for sheet glass | |
| CN212357031U (en) | Adjustable arc-changing mechanism for production of toughened wavy curved glass | |
| CN104291666A (en) | Production process for bent tempered glass | |
| CN210595784U (en) | Horizontal roller table type dinner plate forming toughening furnace | |
| CN106348576A (en) | Production device and method of single-curved surface tempered glass | |
| US4252552A (en) | Shaping glass sheets using molds of different shapes | |
| US3418098A (en) | Apparatus for press bending glass sheets | |
| CN107586013A (en) | A kind of thin tempering glass production method | |
| US3002321A (en) | Method for treating multiple sheet glazing units | |
| US2526359A (en) | Apparatus for bending glass sheets | |
| CN112520991A (en) | Shaping, shaping and toughening equipment for flat and curved glass and shaping, shaping and toughening process thereof | |
| CN101948236A (en) | Corner glass piece toughening treatment process | |
| US3332760A (en) | Apparatus providing a gaseous support bed and method for treating glass or the like thereon | |
| US3293021A (en) | Method of heating glass sheets | |
| US3262768A (en) | Method for bending and tempering glass sheets | |
| CN207062140U (en) | A kind of safety glass quenching air grid | |
| US3600151A (en) | Apparatus for tempering glass sheets |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200522 |