TWI609845B - A production method for a bent glass - Google Patents
A production method for a bent glass Download PDFInfo
- Publication number
- TWI609845B TWI609845B TW106100354A TW106100354A TWI609845B TW I609845 B TWI609845 B TW I609845B TW 106100354 A TW106100354 A TW 106100354A TW 106100354 A TW106100354 A TW 106100354A TW I609845 B TWI609845 B TW I609845B
- Authority
- TW
- Taiwan
- Prior art keywords
- metal
- flat glass
- glass
- frame
- mold
- Prior art date
Links
- 239000011521 glass Substances 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 106
- 229910052751 metal Inorganic materials 0.000 claims abstract description 106
- 239000005357 flat glass Substances 0.000 claims abstract description 75
- 238000002844 melting Methods 0.000 claims abstract description 18
- 230000008018 melting Effects 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 17
- 210000001161 mammalian embryo Anatomy 0.000 claims abstract description 6
- 238000007493 shaping process Methods 0.000 claims description 29
- 238000001816 cooling Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 13
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000008187 granular material Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 7
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 3
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000000463 material Substances 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
- 239000002245 particle Substances 0.000 description 1
Landscapes
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
一種曲面玻璃的製造方法，是在模具的模穴上覆蓋一平板玻璃，在平板玻璃頂面設置一框體，在框體內側設置塑形金屬，該塑形金屬是熔點低於平板玻璃軟化溫度的金屬，接著以高周波、電熱、電磁、火焰的手段加熱，將溫度加熱至平板玻璃的軟化溫度，在此之前塑形金屬已熔化為金屬液，藉由金屬液的重量或外加空氣壓力使平板玻璃變形抵靠在模穴的表面後，接著將模具、框體冷卻，成形的玻璃也隨之冷卻，即可將曲面玻璃粗胚取下，經過去毛邊的處理之後得到曲面玻璃的成品，由於平板玻璃彎曲時，是以流動的金屬液對平板玻璃施壓，因此施力平均且溫度穩定，具有較高的製造良率。A method for manufacturing a curved glass is to cover a mold plate with a flat glass on a top surface of the flat glass, and a molding metal on the inner side of the frame, the molding metal has a melting point lower than a softening temperature of the flat glass. The metal is then heated by means of high frequency, electric heat, electromagnetic, flame, and the temperature is heated to the softening temperature of the flat glass. Before that, the shaped metal has been melted into a molten metal, and the flat plate is made by the weight of the molten metal or the applied air pressure. After the glass is deformed against the surface of the cavity, the mold and the frame are cooled, and the formed glass is cooled. The curved glass rough embryo can be removed, and the finished product of the curved glass is obtained after the deburring treatment. When the flat glass is bent, the flat glass is pressed by the flowing molten metal, so that the applied force is average and the temperature is stable, and the manufacturing yield is high.
Description
本發明涉及一種玻璃的加工方法，尤其涉及一種曲面玻璃的製造方法。The invention relates to a method for processing glass, in particular to a method for manufacturing curved glass.
現有的曲面玻璃，是將平面玻璃透過模具或機台設備，以模具或刀具加工後，將成品做出具有彎曲弧度的玻璃板，廣泛地運用在智慧型手機的面板或背蓋、滑鼠的外殼或手錶的蓋板。The existing curved glass is to pass the flat glass through the mold or the machine equipment, and after processing the mold or the cutter, the finished product is made into a curved glass plate, which is widely used in the panel or back cover of the smart phone and the mouse. Cover of the case or watch.
現有以模具製造曲面玻璃的方法，是設有上下模具，在下模具設有曲面玻璃欲加工成形外形的模穴，將平面玻璃置下模具的模穴上後，將上下模具與平面玻璃加熱至玻璃軟化溫度，並以上模具朝下模具對合的方式，將軟化的平面玻璃壓合成曲面玻璃的粗胚，將曲面玻璃的粗胚去毛邊之後，即可得到曲面玻璃的成品。The existing method for manufacturing a curved glass by using a mold is to provide a mold with upper and lower molds, and a mold hole for forming a shape with a curved glass is disposed on the lower mold, and the flat glass is placed on the mold cavity of the mold, and the upper and lower molds and the flat glass are heated to the glass. Softening the temperature, and the above-mentioned mold facing the lower mold, the softened flat glass is pressed into the rough embryo of the curved glass, and the roughened glass of the curved glass is deburred, and the finished surface glass is obtained.
前述現有的玻璃模壓製程雖能將平板玻璃製成曲面玻璃，但由於壓合時是上模具是以硬質的金屬接觸脆性的玻璃，且金屬的上模具受熱的熱量容易流失，加熱的溫度不均勻，都會使加工的平板玻璃產生缺陷，造成生產的良率不佳。Although the above-mentioned conventional glass mold pressing process can make flat glass into curved glass, since the upper mold is pressed with a hard metal to contact the brittle glass, the heat of the upper mold of the metal is easily lost, and the heating temperature is uneven. It will cause defects in the processed flat glass, resulting in poor production yield.
由於現有以模具製造曲面玻璃的方法的生產良率不佳，本發明以液態金屬的手段加熱玻璃，以金屬液本身的優良熱傳導率及重量使平板玻璃變形，達到較佳的生產良率。Since the production yield of the method for manufacturing curved glass by the mold is not good, the present invention heats the glass by means of liquid metal, and deforms the flat glass by the excellent thermal conductivity and weight of the molten metal itself, thereby achieving better production yield.
為達到上述目的，本發明提供一種曲面玻璃的製造方法，其方法步驟包括：In order to achieve the above object, the present invention provides a method for manufacturing curved glass, the method steps of which include:
設置平板玻璃與框體：在一模具的模穴上覆蓋一平板玻璃，該平板玻璃的周圍搭在該模具頂面接鄰該模穴的階級部，在該平板玻璃頂面設置一框體，該框體的熔點高於該平板玻璃，該框體環繞的範圍為該模具形成該模穴的範圍；Providing a flat glass and a frame: a flat glass is covered on a cavity of a mold, and the flat glass is placed around a top surface of the mold adjacent to the cavity, and a frame is disposed on the top surface of the flat glass. The melting point of the frame is higher than the flat glass, and the frame surrounds the range in which the mold forms the cavity;
設置塑形金屬：在該框體內側設置塑形金屬，使該塑形金屬位於該平板玻璃上，該塑形金屬是熔點低於該平板玻璃軟化溫度的金屬；Providing a shaping metal: providing a shaping metal on the inner side of the frame, the shaping metal being located on the flat glass, the shaping metal being a metal having a melting point lower than a softening temperature of the flat glass;
加熱成形：以加熱設備對該模具、平板玻璃、框體以及塑形金屬進行加熱，加熱至該平板玻璃的軟化溫度，並使該塑形金屬熔化為金屬液，該塑形金屬的金屬液將軟化的平板玻璃下壓，使平板玻璃貼靠到該模具的模穴表面塑形為彎曲的形狀；以及Heat forming: heating the mold, the flat glass, the frame body and the shaping metal with a heating device, heating to a softening temperature of the flat glass, and melting the shaped metal into a molten metal, the molten metal metal liquid The softened flat glass is pressed down, so that the surface of the flat glass against the cavity of the mold is shaped into a curved shape;
冷卻取出工件：將該模具、平板玻璃、框體以及塑形金屬冷卻後，將平板玻璃成形的曲面玻璃粗胚由模具的模穴內取出，對曲面玻璃粗胚進行去毛邊的處理之後即可得到曲面玻璃的成品。Cooling and taking out the workpiece: After cooling the mold, the flat glass, the frame body and the shaping metal, the curved glass rough embryo formed by the flat glass is taken out from the cavity of the mold, and the rough glass blank is subjected to deburring treatment. Get the finished product of curved glass.
較佳的，本發明所述的平板玻璃的軟化溫度介於600℃到900℃之間，所述的塑形金屬是鋅、錫或巴氏合金，鋅的熔點是420℃，錫的熔點是230℃，巴氏合金的熔點是47℃。Preferably, the flat glass of the present invention has a softening temperature of between 600 ° C and 900 ° C. The shaped metal is zinc, tin or babbitt. The melting point of zinc is 420 ° C. The melting point of tin is At 230 ° C, the melting point of the babbitt alloy is 47 ° C.
較佳的，本發明在所述加熱成形的步驟中，在所述的框體上罩合一空壓罩，以空氣壓力向所述的塑形金屬的金屬液施力。Preferably, in the step of heating forming, the present invention covers an air pressure cover on the frame body, and applies force to the metal liquid of the shaping metal by air pressure.
進一步，本發明在所述的設置塑形金屬的步驟中，在該框體內側設置的塑形金屬是粉末或顆粒的狀態。Further, in the step of disposing the shaping metal, the shaping metal disposed inside the frame is in the state of powder or granule.
進一步，本發明在所述加熱成形的步驟中，所述平板玻璃貼靠到該模具的模穴表面塑形為彎曲的形狀後，所述塑形金屬的金屬液的液面仍高於所述框體的底面；在所述冷卻取出工件的步驟時，冷卻固化的塑形金屬會連接在所述框體並且部分向下凸出於該框體的底面。Further, in the step of the heat forming, after the flat glass is pressed against the surface of the cavity of the mold and shaped into a curved shape, the liquid surface of the molten metal is still higher than the liquid surface. a bottom surface of the frame; at the step of cooling the workpiece, the cooled solidified metal is attached to the frame and partially protrudes downward from the bottom surface of the frame.
更進一步，本發明在所述冷卻取出工件的步驟之後，進行削除凸出框體的塑形金屬的步驟，是將凸出所述框體底面的塑形金屬削除；所述的設置塑形金屬的步驟中，在該框體內側設置的塑形金屬是在所述削除凸出框體的塑形金屬的步驟中，被削除部分的冷卻固化的塑形金屬以及由該冷卻固化的塑形金屬削除的部分。Further, after the step of cooling the workpiece, the step of removing the shaped metal protruding from the frame is to remove the shaped metal protruding from the bottom surface of the frame; In the step of forming, the shaping metal disposed on the inner side of the frame is in the step of cutting the shaped metal of the protruding frame, the portion of the cooled solidified shaped metal and the shaped metal solidified by the cooling The part that was removed.
藉由本發明塑形金屬的材料選用，以及框體限制塑形金屬流動的範圍，在加熱設備加熱平板玻璃至軟化溫度之前，塑形金屬就會熔化為流動的金屬液，因此當平板玻璃達到軟化溫度後，流動的金屬液的重量就會使得軟化的平板玻璃變形，使軟化的平板玻璃能抵靠在模具的模穴表面，在冷卻後成形為預定的曲面玻璃的形狀。By selecting the material of the shaping metal of the present invention, and the frame restricting the flow range of the shaping metal, the shaping metal is melted into a flowing metal liquid before the heating device heats the flat glass to the softening temperature, so when the flat glass is softened After the temperature, the weight of the flowing molten metal deforms the softened flat glass so that the softened flat glass can abut against the cavity surface of the mold and, after cooling, be shaped into a predetermined curved glass shape.
本發明的功效在於，是以加熱設備加熱塑形金屬成為流動的金屬液對平板玻璃施壓，金屬液的液體是以流動態的方式接觸平板玻璃，且金屬液被加熱後，接觸平板玻璃的各部分的溫度均勻，因此利用金屬液的重量使軟化的平板玻璃變形的製造方式，具有較高的製造良率。The utility model has the advantages that the heating liquid heats the shaping metal to form a flowing metal liquid to press the flat glass, and the liquid of the metal liquid contacts the flat glass in a flow dynamic manner, and after the molten metal is heated, the flat glass is contacted. Since the temperature of each part is uniform, the manufacturing method of deforming the softened flat glass by the weight of the molten metal has a high manufacturing yield.
為能詳細瞭解本發明的技術特徵及實用功效，並可依照說明書的內容來實施，進一步以如圖式所示的較佳實施例，詳細說明如下。In order to understand the technical features and practical effects of the present invention in detail, it can be implemented in accordance with the contents of the specification, and further described in detail with reference to the preferred embodiments shown in the drawings.
如圖1所示的較佳實施例，本發明是一種曲面玻璃的製造方法，其方法步驟包括：As shown in the preferred embodiment of FIG. 1, the present invention is a method of manufacturing a curved glass, the method steps of which include:
設置平板玻璃與框體：如圖2所示，在一模具10的模穴11上覆蓋一平板玻璃20，選擇用於製造智慧型手機面板的平板玻璃20，例如鋼化平板玻璃的軟化溫度依成分的不同約在600℃到900℃之間，如本較佳實施例該平板玻璃20的軟化溫度是830℃，該平板玻璃20的周圍搭在該模具10頂面接鄰該模穴11的階級部12，在該平板玻璃20頂面設置一框體30，該框體30是以熔點高於該平板玻璃20的金屬或陶瓷材料製成，該框體30位於該平板玻璃20周圍的頂面，該框體30環繞的範圍為該模具10形成該模穴11的範圍。The flat glass and the frame are arranged: as shown in FIG. 2, a flat glass 20 is covered on the cavity 11 of the mold 10, and the flat glass 20 for manufacturing the smart phone panel is selected, for example, the softening temperature of the tempered flat glass is determined. The difference in composition is between about 600 ° C and 900 ° C. As in the preferred embodiment, the softening temperature of the flat glass 20 is 830 ° C. The periphery of the flat glass 20 is placed on the top surface of the mold 10 adjacent to the cavity 11 . The portion 12 is provided with a frame 30 on the top surface of the flat glass 20, and the frame 30 is made of a metal or ceramic material having a higher melting point than the flat glass 20. The frame 30 is located on the top surface of the flat glass 20 The frame 30 is surrounded by a range in which the mold 10 forms the cavity 11.
設置塑形金屬：如圖2所示，在該框體30內側設置塑形金屬40，使塑形金屬40位於該平板玻璃20上，該塑形金屬40是熔點低於該平板玻璃20軟化溫度的金屬，可以是粉末、顆粒的狀態也可以是金屬塊的狀態，如本較佳實施例該塑形金屬40是鋅並且以粉末的形態設置在該框體30內側而位於該平板玻璃20上，鋅的熔點是420℃低於該平板玻璃20的軟化溫度；除了選用鋅以外，該塑形金屬40也可以是錫或巴氏合金，錫的熔點是230℃，巴氏合金的熔點是47℃。A shaping metal is disposed: as shown in FIG. 2, a shaping metal 40 is disposed inside the frame 30, and the shaping metal 40 is located on the flat glass 20, and the molding metal 40 has a melting point lower than a softening temperature of the flat glass 20. The metal may be in the state of a powder, a particle or a metal block. As in the preferred embodiment, the shaping metal 40 is zinc and is disposed on the inside of the frame 30 in the form of a powder on the flat glass 20. The melting point of zinc is 420 ° C lower than the softening temperature of the flat glass 20; the molding metal 40 may be tin or babbitt alloy except for zinc, the melting point of tin is 230 ° C, and the melting point of the babbitt alloy is 47. °C.
加熱成形：如圖3所示，以加熱設備，例如高周波、電熱、電磁或火焰加熱設備對該模具10、平板玻璃20、框體30以及塑形金屬40進行加熱，加熱至該平板玻璃20的軟化溫度，同時使得塑形金屬40熔化為金屬液，這時軟化的平板玻璃20受該塑形金屬40的金屬液的重量下壓，使平板玻璃20貼靠到該模具10的模穴11表面塑形為彎曲的形狀，這時塑形金屬40的金屬液面仍高於該框體30的底面。Heat forming: as shown in FIG. 3, the mold 10, the flat glass 20, the frame 30, and the shaping metal 40 are heated by a heating device such as a high-frequency, electrothermal, electromagnetic or flame heating device, and heated to the flat glass 20 The softening temperature is simultaneously caused to melt the shaped metal 40 into a molten metal. At this time, the softened flat glass 20 is pressed by the weight of the molten metal of the shaped metal 40, so that the flat glass 20 abuts against the surface of the cavity 11 of the mold 10. In the shape of a curved shape, the molten metal surface of the shaped metal 40 is still higher than the bottom surface of the frame 30.
冷卻取出工件：如圖3、圖4所示，將該模具10、平板玻璃20、框體30以及塑形金屬40冷卻後，冷卻固化的塑形金屬40的周邊會連接在該框體30並且向下凸出於該框體30的底面，先將框體30以及連接在框體30的塑形金屬40取下，再將平板玻璃20成形的曲面玻璃粗胚21由模具10的模穴11內取出，對曲面玻璃粗胚21進行去毛邊的處理之後即可得到曲面玻璃的成品。Cooling and taking out the workpiece: As shown in FIG. 3 and FIG. 4, after the mold 10, the flat glass 20, the frame 30, and the molding metal 40 are cooled, the periphery of the cooled and solidified molding metal 40 is connected to the frame 30 and The lower surface of the frame body 30 is protruded downward, and the frame body 30 and the molding metal 40 connected to the frame body 30 are removed first, and the curved glass rough blank 21 formed by the flat glass 20 is formed by the cavity 11 of the mold 10. The inside of the curved glass rough embryo 21 is subjected to deburring and the finished product of the curved glass is obtained.
削除凸出框體的塑形金屬：將凸出框體30底面的冷卻固化的塑形金屬40削除。在冷卻取出工件的步驟之後，繼續製造下一片曲面玻璃而重複本發明前述各步驟時，在設置塑形金屬的步驟中，將凸出框體30底面而被削除下來的冷卻固化的塑形金屬40的部分再度置入框體30之間，使所述在該框體30內側設置的塑形金屬40，包含了被削除部分的冷卻固化的塑形金屬40以及由該冷卻固化的塑形金屬40削除的塑形金屬40，使固化的塑形金屬40位於平板玻璃20上，使實施本發明的方法時能重複使用塑形金屬40。The shaped metal of the protruding frame is removed: the cooled solidified shaped metal 40 protruding from the bottom surface of the frame 30 is removed. After the step of cooling the workpiece, and continuing to manufacture the next piece of curved glass to repeat the foregoing steps of the present invention, in the step of providing the shaped metal, the cooled solidified shaped metal protruding from the bottom surface of the frame 30 is removed. The portion of 40 is again placed between the frames 30 such that the shaped metal 40 disposed inside the frame 30 includes the cooled and solidified shaped metal 40 of the removed portion and the shaped metal solidified by the cooling. 40 The removed shaped metal 40 is placed on the flat glass 20 such that the shaped metal 40 can be reused in practicing the method of the present invention.
本發明在加熱成形的步驟中，除了單以塑形金屬40的金屬液的重量下壓而使軟化的平板玻璃20變形以外，在塑形金屬40的金屬液將平板玻璃20下壓變形的過程中，可以在框體30上罩合一空壓罩，以空氣壓力平均地向塑形金屬40的金屬液施力，加快塑形金屬40的金屬液將平板玻璃20下壓變形的力量與速度。In the step of heat forming, in addition to deforming the softened flat glass 20 by the weight of the molten metal of the shaped metal 40 alone, the process of deforming the flat glass 20 by the molten metal of the shaped metal 40 is performed. In the frame 30, an air pressure cover can be covered on the frame body 30, and the metal liquid of the shaping metal 40 can be evenly applied by the air pressure to accelerate the strength and speed of the molten metal of the shaping metal 40 to deform the plate glass 20.
以上所述僅為本發明的較佳實施例而已，並非用以限定本發明主張的權利範圍，凡其它未脫離本發明所揭示的精神所完成的等效改變或修飾，均應包括在本發明的申請專利範圍內。The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the claims of the present invention, and other equivalent changes or modifications which are not departing from the spirit of the present invention should be included in the present invention. Within the scope of the patent application.
10‧‧‧模具
11‧‧‧模穴
12‧‧‧階級部
20‧‧‧平板玻璃
21‧‧‧曲面玻璃粗胚
30‧‧‧框體
40‧‧‧塑形金屬10‧‧‧Mold
11‧‧‧ cavity
12‧‧ ‧ Class Department
20‧‧‧ flat glass
21‧‧‧Surface glass rough embryo
30‧‧‧ frame
40‧‧‧Shaping metal
圖1是本發明較佳實施例的方法步驟流程圖。 圖2是本發明較佳實施例設置玻璃、框體的示意圖。 圖3是本發明較佳實施例加熱成形的示意圖。 圖4是本發明較佳實施例冷卻取出工件的示意圖。1 is a flow chart of the steps of a method in accordance with a preferred embodiment of the present invention. 2 is a schematic view of a glass and a frame according to a preferred embodiment of the present invention. Figure 3 is a schematic illustration of a heat forming process in accordance with a preferred embodiment of the present invention. Figure 4 is a schematic illustration of the cooling and removal of a workpiece in accordance with a preferred embodiment of the present invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW106100354A TWI609845B (en) | 2017-01-05 | 2017-01-05 | A production method for a bent glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW106100354A TWI609845B (en) | 2017-01-05 | 2017-01-05 | A production method for a bent glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TWI609845B true TWI609845B (en) | 2018-01-01 |
| TW201825417A TW201825417A (en) | 2018-07-16 |
Family
ID=61728538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW106100354A TWI609845B (en) | 2017-01-05 | 2017-01-05 | A production method for a bent glass |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI609845B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201313632A (en) * | 2011-09-30 | 2013-04-01 | Hon Hai Prec Ind Co Ltd | Method and apparatus for manufacturing curved glass sheet |
-
2017
- 2017-01-05 TW TW106100354A patent/TWI609845B/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201313632A (en) * | 2011-09-30 | 2013-04-01 | Hon Hai Prec Ind Co Ltd | Method and apparatus for manufacturing curved glass sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201825417A (en) | 2018-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108285263A (en) | Method for manufacturing curved glass | |
| TW369423B (en) | Metal glass made product and its production method | |
| CN111094195B (en) | Mold for molding glass optical component and method for manufacturing glass optical component using the same | |
| WO2014097830A1 (en) | Molded glass article production method, and mold | |
| CN109366840A (en) | A kind of EPP product integral forming process with plasticizing dermatoglyph layer | |
| CN106623714A (en) | Manufacturing method of magnesium alloy product | |
| CN103357805B (en) | The method for forging and molding of pin rail | |
| CN103419002A (en) | Temperature cooling precision forming method of big modulus high boss bevel gear | |
| CN207642138U (en) | Using the thin plate of low-melting alloy without the wrinkle resistant shaping dies of surplus | |
| TWI609845B (en) | A production method for a bent glass | |
| CN105859111A (en) | A kind of curved surface glass preparation method and its processing device | |
| US3819349A (en) | Method and apparatus for producing watch crystals | |
| CN108043964A (en) | Using the thin plate of low-melting alloy without the wrinkle resistant shaping dies of surplus and manufacturing process | |
| CN110819979A (en) | Manufacturing method based on mold for glassware machining | |
| CN103613269A (en) | Manufacturing method for glass hand basin or glass foot basin | |
| CN207862171U (en) | A kind of mold | |
| CN108000066A (en) | A kind of manufacturing process of automotive hub | |
| CN104607594A (en) | Casting production technology of alloy spring seat | |
| US1712233A (en) | Plate mold and method of making plates | |
| CN107030256A (en) | A kind of casting method of metal implements | |
| JPS62256631A (en) | Manufacture of decorating molded product | |
| CN206337162U (en) | One kind, which is breakked away, subtracts trace mould | |
| CN104624850B (en) | A kind of nickel-base alloy stainless steel ellipse pipe cap forming technology of overcritical wall thickness | |
| KR100709452B1 (en) | Forming Method of Skin Material by Powder Slush Molding | |
| CN216831456U (en) | Graphite mold with ink ceramic layer for thermal sintering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |