WO2019001190A1 - 玻璃热弯模具 - Google Patents

玻璃热弯模具 Download PDF

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Publication number
WO2019001190A1
WO2019001190A1 PCT/CN2018/088497 CN2018088497W WO2019001190A1 WO 2019001190 A1 WO2019001190 A1 WO 2019001190A1 CN 2018088497 W CN2018088497 W CN 2018088497W WO 2019001190 A1 WO2019001190 A1 WO 2019001190A1
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WIPO (PCT)
Prior art keywords
pressing
glass
die
hot bending
punch
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PCT/CN2018/088497
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English (en)
French (fr)
Inventor
范少荣
任书明
陈发伟
王耀君
Original Assignee
东旭科技集团有限公司
东旭集团有限公司
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Application filed by 东旭科技集团有限公司, 东旭集团有限公司 filed Critical 东旭科技集团有限公司
Publication of WO2019001190A1 publication Critical patent/WO2019001190A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/023—Re-forming glass sheets by bending
    • C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
    • C03B23/0302—Re-forming glass sheets by bending by press-bending between shaping moulds between opposing full-face shaping moulds

Definitions

  • the present disclosure relates to the field of glass processing and, in particular, to a glass hot bending mold.
  • the mold for 3D mobile phone glass generally consists of a punch and a die.
  • the periphery of the glass is bent by heating and external pressure.
  • the central region of the glass is inevitably deformed.
  • the deformation of the central area of the glass will also be fixed, and the deformation of the central area of the glass will affect the image display of the mobile phone.
  • the present disclosure provides a glass hot bending die comprising a punch and a die that cooperate with each other, and the periphery of the punch and the die are each formed with a curved peripheral edge for molding a glass article.
  • the mold wherein the glass hot bending mold further comprises pressurizing means for applying a pressure toward the convex direction toward a central portion of the glass article during a process in which the male and female molds are relatively close.
  • the pressing device comprises a pressing rod and a pressing plate for attaching to the glass article, the pressing rod being vertically slidably connected to the upper surface of the pressure plate through the concave mold.
  • the number of the pressing bars is plural, and are respectively connected to the pressing plate at intervals.
  • the number of the pressing bars is one, and the cross-sectional area of the pressing bars is consistent with the surface area of the pressing plate.
  • the pressure bar is detachably coupled to the pressure plate.
  • the die is provided with a through hole for passing through the pressing bar, and the pressing bar is in clearance with the through hole.
  • the area of the pressure plate is not greater than the area of the central region of the glass article.
  • the female die is formed with a recess for receiving and matching the shape of the pressure plate toward the inner top wall of the pressure plate.
  • the surface roughness of the pressure plate and the punch is not more than 0.08 ⁇ m.
  • the punch, the die, and the pressure plate are made of graphite.
  • the beneficial effect of the present technology is that in the process of gradually forming the peripheral curved surface of the glass article, the pressure in the direction toward the punch is applied to the central region of the glass article by the pressing device, thereby eliminating the external action caused by the pressing of the die to the punch. Force, the deformation of the central region of the glass article. In this way, it is possible to effectively solve the deformation problem of the central region of the glass product while ensuring the curved surface of the periphery of the glass product.
  • FIG. 1 is a cross-sectional view of a glass hot bending die provided by the present disclosure.
  • FIG 2 is a schematic view of a top view of a glass hot bending die provided by the present disclosure.
  • the present disclosure provides a glass hot bending die comprising a male die 1 and a die 2 which are matched with each other, and the periphery of the punch 1 and the die 2 are formed with a shape for molding the glass article 3.
  • the glass article 3 is heated by the high temperature and the pressure applied by the die 2 toward the punch 1 to gradually bend the periphery of the glass article 3 to form a curved surface having a certain curvature.
  • a certain deformation such as warpage is also generated, and therefore, in order to avoid deformation of the central region of the glass article 3 during the molding process,
  • the pressing device 4 applies a pressure toward the convex portion 1 toward the central portion of the glass article during the relatively close proximity of the male mold 1 and the female mold 2 to eliminate the deformation of the central portion of the glass product 3 to form the glass product 3
  • the pressure of the die 2 is not pressed against the punch 1, and the plane state is always maintained, and no deformation such as warpage is generated, thereby ensuring the normal display of the image of the mobile phone.
  • the pressing device 4 includes a pressing rod 41 and a pressing plate 42 for attaching to the glass article 3, and the pressing rod 41 is vertically slidably coupled to the pressing plate 42 through the die 2 surface. That is, the pressing plate 42 is located between the female die 2 and the male die 1, and the pressing bar 41 is vertically connected to the pressing plate 42, and the female die 2 is freely attached to the pressing plate 42 through the pressing bar 41.
  • the pressing plate 42 is positioned above the glass article 3, and the pressing bar 41 applies a pressure in the direction of the punch 1 to the central portion of the glass article 3, eliminating deformation of the central region of the glass article 3 by the molding process.
  • the orientation word "upper” is defined by the upper and lower directions as shown in the drawing of Fig. 1.
  • the number of the pressing rods 41 may be plural, and are respectively connected to the pressing plate 42 at intervals. That is, a plurality of pressing bars 41 are vertically connected to the pressing plate 42, and the pressing bar 41 is evenly disposed on the upper surface of the pressing plate 42, ensuring uniform force of the pressing plate 42.
  • the number of the pressing bars 41 may be one, and the cross-sectional area of the pressing bar 41 coincides with the surface area of the pressing plate 42.
  • the upper surface of the pressing plate 42 may be formed in a circular shape, and the surface area of the circular shape is the same as the cross-sectional area of the pressing rod 41, and is the same size, so that the pressing force of the pressing plate 42 can be ensured uniformly.
  • the pressing rod 41 is detachably coupled to the pressing plate 42.
  • the pressing plate 42 may be a screw connection or the like.
  • the pressing bar 41 is always perpendicular to the pressing plate 42.
  • the die 2 is provided with a through hole for passing through the pressing rod 41, and the pressing rod 41 is in clearance with the through hole. That is, the pressing rod 41 and the female die 2 are independent of each other, but are mutually restricted, the female die 2 can only be moved in the axial direction of the pressing bar 41, and the pressing bar 41 and the pressing plate 42 are always kept perpendicular, so that When the pressure plate 42 applies pressure toward the central portion of the glass article 3, it is possible to prevent the glass article 3 from slipping and to prevent the glass article 3 from being defective at a high temperature.
  • the area of the pressing plate 42 is not larger than the area of the central portion of the glass product 3.
  • the central area refers to the non-deformed area
  • the periphery of the glass article 3 refers to the deformed area.
  • the female die 2 is formed to be accommodated toward the inner top wall of the pressing plate 42 and is shaped to fit the pressing plate 42. Groove 21.
  • the pressing plate 42 is integrated with the die 2, and the die 2 can drive the pressing plate 42 to continue pressing the glass.
  • the product 3 ensures the deformation amount of the periphery of the glass product.
  • the surface roughness of the pressing plate 42 and the punch 1 is not more than 0.08 ⁇ m.
  • the pressure plate 42 and the punch 1 have a surface finish of at least 11 grades, which prevents scratching with the glass article 3.
  • the material of the punch 1, the die 2, and the pressure plate 42 is graphite. Graphite does not deform due to temperature rise, and does not cause other deformation of the glass product 3 due to deformation of the material of the mold itself during the molding process.
  • the present disclosure provides a glass hot bending mold that applies a pressure toward a convex portion toward a central portion of a glass article by a pressurizing device, thereby eliminating an external force generated by the die pressing the punch, for the center of the glass product.
  • the deformation produced by the area In this way, it is possible to effectively solve the deformation problem of the central region of the glass product while ensuring the curved surface of the periphery of the glass product.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

一种玻璃热弯模具，包括相互配合的凸模(1)和凹模(2)，凸模(1)和凹模(2)的周缘均形成有用于成型玻璃制品(3)的具有曲率的周缘的弯模，其中，玻璃热弯模具还包括用于在凸模(1)和凹模(2)相对接近的过程中朝向玻璃制品(3)的中心区域施加朝向凸模(1)方向压力的加压装置(4)。这样，通过加压装置施加到玻璃制品中心区域的压力，消除了因凹模压向凸模产生的外作用力对于玻璃制品的中心区域产生的形变。

Description

玻璃热弯模具 技术领域
本公开涉及玻璃加工成型领域，具体地，涉及一种玻璃热弯模具。
背景技术
目前，3D手机玻璃用的模具，一般由一个凸模和一个凹模组成。在玻璃的加工成型过程中，玻璃的周缘通过加热和外界压力而产生弯曲。但是同时在外界压力作用下，玻璃的中心区域也不可避免的产生了形变。导致在定型过程中，玻璃中心区域的形变也会被固定下来，玻璃中心区域的形变将影响手机图像显示。
发明内容
本公开的目的是提供一种玻璃热弯模具，该玻璃热弯模具能够有效避免玻璃制品成型过程中中心区域的变形。
为了实现上述目的，本公开提供一种玻璃热弯模具，包括相互配合的凸模和凹模，所述凸模和所述凹模的周缘均形成有用于成型玻璃制品的具有曲率的周缘的弯模，其中，所述玻璃热弯模具还包括用于在所述凸模和凹模相对接近的过程中朝向所述玻璃制品的中心区域施加朝向所述凸模方向压力的加压装置。
可选地，所述加压装置包括压杆和用于贴合到所述玻璃制品上的压板，所述压杆可相对滑动地穿过所述凹模垂直连接到所述压板的上表面。
可选地，所述压杆的数量为多个，分别间隔均匀地连接到所述压板上。
可选地，所述压杆的数量为一个，且所述压杆的横截面积与所述压板 的表面面积一致。
可选地，所述压杆可拆卸地连接到所述压板。
可选地，所述凹模上开设有用于穿过所述压杆的通孔，所述压杆与所述通孔间隙配合。
可选地，所述压板的面积不大于所述玻璃制品的中心区域的面积。
可选地，所述凹模朝向所述压板的内侧顶壁形成有容纳且与所述压板形状配合的凹槽。
可选地，所述压板和所述凸模的表面粗糙度不大于0.08μm。
可选地，所述凸模、所述凹模和所述压板的材质为石墨。
本技术的有益效果是：在玻璃制品的周缘曲面逐渐成型的过程中，同时通过加压装置朝向玻璃制品的中心区域施加朝向凸模的方向的压力，消除因凹模压向凸模产生的外作用力，对于玻璃制品的中心区域产生的形变。这样，可以在保证玻璃制品的周缘的曲面成型的情况下，有效地解决了玻璃制品中心区域的形变问题。
本公开的其他特征和优点将在随后的具体实施方式部分予以详细说明。
附图说明
附图是用来提供对本公开的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本公开，但并不构成对本公开的限制。在附图中：
图1是本公开提供的玻璃热弯模具的剖视图。
图2是本公开提供的玻璃热弯模具俯视图的示意图。
附图标记说明
1凸模              2凹模
3玻璃制品          4加压装置
41压杆             42压板
21凹槽
具体实施方式
以下结合附图对本公开的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本公开，并不用于限制本公开。
如图1和图2所示，本公开提供一种玻璃热弯模具，包括相互配合的凸模1和凹模2，凸模1和凹模2的周缘均形成有用于成型玻璃制品3的具有曲率的周缘的弯模，其中，玻璃热弯模具还包括用于在凸模1和凹模2相对接近的过程中朝向玻璃制品3的中心区域施加朝向凸模1方向压力的加压装置4。
在玻璃制品的成型过程中，玻璃制品3通过高温加热以及凹模2朝向凸模1施加的压力的共同作用，一方面可以逐渐使得玻璃制品3的周缘弯曲形成具有一定曲率的曲面。此时，另一方面，玻璃制品3的中心区域在受到上述压力的情况下，也会产生一定的形变例如翘曲，因此，为了避免在成型过程中，玻璃制品3的中心区域产生形变，加压装置4在凸模1和凹模2相对接近的过程中，朝向玻璃制品的中心区域施加朝向凸模1方向的压力，以消除玻璃制品3的中心区域的形变，使其在玻璃制品3成型过程中不受到凹模2压向凸模1的压力影响，始终保持平面状态，不产生翘曲等变形，进而保证手机图像的正常显示。
具体地，如图1所示，加压装置4包括压杆41和用于贴合到玻璃制品3上的压板42，压杆41可相对滑动地穿过凹模2垂直连接到压板42的上表 面。即，压板42位于凹模2和凸模1之间，压杆41垂直连接到压板42，凹模2可自由穿过压杆41贴合到压板42上。成型玻璃制品过程中，压板42位于玻璃制品3的上方，压杆41施加朝向凸模1方向的压力到玻璃制品3的中心区域，消除成型过程对玻璃制品3的中心区域的形变。其中，方位词“上”如附图1图面所示的上、下方向所定义的。
其中，为了保证压板42受到压杆41的作用力均匀，作为一种实施方式，压杆41的数量可以为多个，分别间隔均匀地连接到压板42。即，压板42上垂直连接有多个压杆41，压杆41均匀地布置在压板42的上表面，保证压板42的受力均匀。
作为另外一种实施方式，压杆41的数量可以为一个，且压杆41的横截面积与压板42的表面面积一致。例如，压板42的上表面可以形成为圆形，并且该圆形的表面积与压杆41的横截面积一致，同形同大小，这样，同样可以保证压板42受力均匀。
为了方便压杆41的拆装，在本实施方式中，压杆41可拆卸地连接到压板42。例如，可以为螺纹连接等。
为了保证玻璃制品3的表面品质，在压杆41朝向压板42施加压力的情况下，压杆41要始终垂直于压板42。在本实施方式中，凹模2上开设有用于穿过压杆41的通孔，压杆41与通孔间隙配合。即，压杆41和凹模2之间是彼此独立的，但是又互相限制，凹模2仅可以沿压杆41的轴向方向移动，并且压杆41和压板42始终保持垂直，这样，在压板42施加朝向玻璃制品3中心区域的压力时，可以防止玻璃制品3产生滑动，避免玻璃制品3在高温下出现缺陷。
为了防止压板42对于玻璃制品3的边部产生力的作用，在本实施方式中，压板42的面积不大于玻璃制品3的中心区域的面积。其中，中心区域指非变形区，玻璃制品3的周缘指变形区。压板42作用到中心区域的压 力，避免中心区域发生形变。因此，压板42的面积只要作用到玻璃制品3的非变形区即可。
由于本玻璃热弯模具增加了加压装置，因此，为了保证玻璃制品3的周缘的变形量，在本实施方式中，凹模2朝向压板42的内侧顶壁形成有容纳且与压板42形状配合的凹槽21。这样，在凹模2不断向下压向凸模1时，压板42容纳到凹槽21内，此时，压板42与凹模2配合为一体，凹模2便可以带动压板42继续下压玻璃制品3，保证玻璃制品3周缘的变形量。
在本实施方式中，由于压板42和凸模1与玻璃制品3的直接接触，在本实施方式中，压板42和凸模1的表面粗糙度不大于0.08μm。换言之，压板42和凸模1的表面光洁度至少为11级，防止与玻璃制品3时对其造成划伤。
由于玻璃制品3在成型过程中处于高温的状态，因此，在本实施方式中，凸模1、凹模2和压板42的材质为石墨。石墨不会因温度升高产生变形，也就不会导致玻璃制品3在成型过程中因模具本身材质变形而产生其他变形。
综上，本公开提供一种玻璃热弯模具，通过加压装置朝向玻璃制品的中心区域施加朝向凸模的方向的压力，消除因凹模压向凸模产生的外作用力，对于玻璃制品的中心区域产生的形变。这样，可以在保证玻璃制品的周缘的曲面成型的情况下，有效地解决了玻璃制品中心区域的形变问题。
以上结合附图详细描述了本公开的优选实施方式，但是，本公开并不限于上述实施方式中的具体细节，在本公开的技术构思范围内，可以对本公开的技术方案进行多种简单变型，这些简单变型均属于本公开的保护范围。
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合，为了避免不 必要的重复，本公开对各种可能的组合方式不再另行说明。
此外，本公开的各种不同的实施方式之间也可以进行任意组合，只要其不违背本公开的思想，其同样应当视为本公开所公开的内容。

Claims (10)

  1. 一种玻璃热弯模具，包括相互配合的凸模(1)和凹模(2)，所述凸模(1)和所述凹模(2)的周缘均形成有用于成型玻璃制品(3)的具有曲率的周缘的弯模，其特征在于，所述玻璃热弯模具还包括用于在所述凸模(1)和凹模(2)相对接近的过程中朝向所述玻璃制品(3)的中心区域施加朝向所述凸模(1)方向压力的加压装置(4)。
  2. 根据权利要求1所述的玻璃热弯模具，其特征在于，所述加压装置(4)包括压杆(41)和用于贴合到所述玻璃制品(3)上的压板(42)，所述压杆(41)可相对滑动地穿过所述凹模(2)垂直连接到所述压板(42)的上表面。
  3. 根据权利要求2所述的玻璃热弯模具，其特征在于，所述压杆(41)的数量为多个，分别间隔均匀地连接到所述压板(42)上。
  4. 根据权利要求2所述的玻璃热弯模具，其特征在于，所述压杆(41)的数量为一个，且所述压杆(41)的横截面积与所述压板(42)的表面面积一致。
  5. 根据权利要求2所述的玻璃热弯模具，其特征在于，所述压杆(41)可拆卸地连接到所述压板(42)。
  6. 根据权利要求2-5中任意一项所述的玻璃热弯模具，其特征在于，所述凹模(2)上开设有用于穿过所述压杆(41)的通孔，所述压杆(41)与所述通孔间隙配合。
  7. 根据权利要求6所述的玻璃热弯模具，其特征在于，所述压板(42)的面积不大于所述玻璃制品(3)的中心区域的面积。
  8. 根据权利要求2所述的玻璃热弯模具，其特征在于，所述凹模(2)朝向所述压板(42)的内侧顶壁形成有容纳且与所述压板(42)形状配合的凹槽(21)。
  9. 根据权利要求2所述的玻璃热弯模具，其特征在于，所述压板(42)和所述凸模(1)的表面粗糙度不大于0.08μm。
  10. 根据权利要求2所述的玻璃热弯模具，其特征在于，所述凸模(1)、所述凹模(2)和所述压板(42)的材质为石墨。
PCT/CN2018/088497 2017-06-27 2018-05-25 玻璃热弯模具 WO2019001190A1 (zh)

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