WO2020108121A1 - 倒扣玻璃板的加工模具及加工方法 - Google Patents

倒扣玻璃板的加工模具及加工方法 Download PDF

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Publication number
WO2020108121A1
WO2020108121A1 PCT/CN2019/110860 CN2019110860W WO2020108121A1 WO 2020108121 A1 WO2020108121 A1 WO 2020108121A1 CN 2019110860 W CN2019110860 W CN 2019110860W WO 2020108121 A1 WO2020108121 A1 WO 2020108121A1
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WO
WIPO (PCT)
Prior art keywords
mold
distance
glass plate
processing
body portion
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.)
Ceased
Application number
PCT/CN2019/110860
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English (en)
French (fr)
Inventor
但奇善
严绪东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Technologies Holdings Shenzhen Co Ltd
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AAC Acoustic Technologies Shenzhen Co Ltd
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Filing date
Publication date
Application filed by AAC Acoustic Technologies Shenzhen Co Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2020108121A1 publication Critical patent/WO2020108121A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/40—Product characteristics
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/50—Structural details of the press-mould assembly
    • 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

Definitions

  • the invention belongs to the technical field of glass forming, and in particular relates to a processing die and a processing method of an inverted glass plate.
  • a glass substrate processing mold is generally used to produce a three-dimensional glass product by hot bending.
  • This type of glass substrate processing mold usually includes a concave mold with a cavity and a convex mold matched with the concave mold. After the mold is closed, the concave A gap with a predetermined shape is formed between the mold and the punch, so that the gap is used to restrict the shape of the glass substrate in a hot-melt state to be shaped, and then cooled to form a three-dimensional glass product with a predetermined shape.
  • the glass substrate processing mold in the related art can only realize the bending processing of the glass substrate at an angle of 90° or less, which limits bending at a larger angle.
  • the technical problem to be solved by the present invention is to provide a processing mold and a processing method that can form a three-dimensional structure glass substrate by hot bending to form an inverted glass plate.
  • the present invention provides a processing mold for an inverted glass plate for processing a three-dimensional glass substrate to form an inverted glass plate.
  • the inverted glass plate includes a main body portion and A transition portion bent at the edge of the portion and an extension portion bent from the edge of the transition portion, the main body portion cooperates with the transition portion and the extension portion to form a receiving space open at one end
  • the extension portion includes A first outer surface facing away from the receiving space, the first outer surface including a first end point away from the main body portion and a connection point connected to the transition portion, the first outer surface is at the connection point
  • the tangent direction of is perpendicular to the horizontal direction, and the angle between the tangent direction of the first end point and the horizontal direction of the first outer surface and away from the receiving space is ⁇ , and the value of ⁇ satisfies: 90° ⁇ ⁇ 180°, the horizontal distance between the connection point and the first end point is U
  • the processing mold includes a lower mold with a cavity and an upper mold cooperating with the
  • the protrusion When the mold is closed, the protrusion extends into the cavity and is spaced apart from the side wall, and the protrusion The distance from the side wall is greater than or equal to the sum of the thickness of the extension and the distance U, and less than or equal to twice the sum of the thickness of the extension and the distance U.
  • the value of ⁇ satisfies: 110° ⁇ 180°.
  • the range of U is 0.15-1mm.
  • the glass substrate includes a body portion and a bent portion extending from the body portion, and a side wall of the lower mold includes a receiving surface that receives the bent portion and connects the receiving surface and the The connecting surface of the bottom wall.
  • the convex outer surface includes a top surface facing the bottom wall and a side surface extending from the top surface away from the bottom wall.
  • the side surface is a vertical surface.
  • the distance between the side surface and the receiving surface is greater than the distance between the side surface and the connecting surface, and the distance between the side surface and the connecting surface is greater than or equal to the thickness of the extension and the distance U The sum, and less than or equal to twice the sum of the thickness of the extension and the distance U.
  • the bottom wall of the lower mold is flat.
  • both the receiving surface and the connecting surface are arc surfaces.
  • the angle between the body portion and the bent portion is between 90° and 100°.
  • the invention also provides a method for processing the inverted glass plate, including:
  • the glass substrate including a body portion and a bent portion extending from the body portion;
  • a processing mold for an inverted glass plate includes a lower mold having a cavity and an upper mold that cooperates with the lower mold.
  • the lower mold includes a bottom that cooperates to form the cavity Walls and side walls, the upper mold includes protrusions;
  • the bent portion of the glass substrate abuts against the side wall to form a space between the body portion of the glass substrate and the bottom wall;
  • the upper mold and the lower mold are clamped so that the glass substrate is hot pressed to form an inverted glass plate.
  • the protrusion presses against the body portion of the glass substrate until the body portion is attached Closed to the bottom wall of the lower mold to form the main part of the reverse glass plate, the bending portion is hot-pressed during the mold closing process to form a transition portion of the reverse glass plate and the extension extending from the edge of the transition portion
  • An extension portion the body portion cooperates with the transition portion and the extension portion to form a receiving space with one end open, the extension portion includes a first outer surface facing away from the receiving space, the first outer surface includes a distance A first end point of the main body part and a connection point connected to the transition part, the tangent direction of the first outer surface at the connection point is perpendicular to the horizontal direction, and the first outer surface is at the first
  • the angle between the tangent direction of the end point and the horizontal direction and away from the receiving space is ⁇ , and the value of ⁇ satisfies
  • the processing method of the glass substrate includes: providing flat glass; providing a concave mold and a convex mold, the concave mold is provided with a receiving cavity, and the convex mold is provided with a convex block matched with the receiving cavity, surrounding The distance between the surface of the receiving cavity and the surface forming the bump is equal to the thickness of the planar glass; fixing the planar glass to the concave mold, closing the convex mold and the concave mold, so that The flat glass forms a glass substrate including a body portion and a bent portion.
  • the body portion is flat.
  • the angle between the body portion and the bent portion is between 90° and 100°.
  • the value of ⁇ satisfies: 110° ⁇ 180°.
  • the range of U is 0.15-1mm.
  • the side wall of the lower mold includes a receiving surface that receives the bent portion and a connecting surface that connects the receiving surface and the bottom wall.
  • the convex outer surface includes a top surface facing the bottom wall and a side surface extending from the top surface away from the bottom wall.
  • the side surface is a vertical surface.
  • the distance between the side surface and the connecting surface is greater than the distance between the side surface and the receiving surface, and the distance between the side surface and the connecting surface is greater than or equal to the thickness of the extension and the distance U The sum, and less than or equal to twice the sum of the thickness of the extension and the distance U.
  • both the receiving surface and the connecting surface are arc surfaces.
  • the processing mold of the reverse glass plate of the present invention forms the reverse structure of the bent portion of the glass substrate through the difference in size between the upper mold and the lower mold, which has the advantages of simple structure and convenient implementation, while simplifying
  • the forming process of the glass substrate is improved, and the forming efficiency of the glass substrate is improved; when the glass substrate is used as a casing of a mobile terminal, the inverted structure can give users a better grip.
  • FIG. 1 is a schematic cross-sectional structure diagram of a three-dimensional glass substrate provided by the present invention before a mold is closed;
  • FIG. 2 is a schematic cross-sectional structural view of a three-dimensional glass substrate provided by the present invention after a mold is closed;
  • FIG. 3 is a schematic cross-sectional structure diagram of an implementation state of the processing mold and the glass substrate shown in FIG. 1;
  • FIG. 4 is a schematic cross-sectional structure diagram of another implementation state of the processing mold and the glass substrate shown in FIG. 1;
  • FIG. 5 is a schematic structural view of a flat glass formed by the processing mold shown in FIG. 1;
  • FIG. 6 is a schematic structural diagram of a reverse glass plate
  • FIG. 7 is a three-dimensional structural schematic diagram of a processing mold for an inverted glass plate provided by the present invention.
  • FIG. 8 is an exploded schematic view of a processing mold for an inverted glass plate provided by the present invention.
  • FIG. 9 is a schematic cross-sectional structure diagram of a processing mold of a reverse glass plate provided by the present invention before mold clamping;
  • FIG. 10 is a schematic cross-sectional structure diagram of a mold for processing a reverse glass plate provided by the present invention after mold clamping;
  • FIG. 11 is a flowchart of a method for processing an inverted glass plate provided by the present invention.
  • step S2 is a schematic diagram of the state of step S2 in the processing method of the inverted glass plate of the present invention.
  • step S3 is a schematic diagram of the state of step S3 in the processing method of the inverted glass plate of the present invention.
  • FIG. 14 is a schematic diagram of the state of step S5 in the processing method of the inverted glass plate of the present invention.
  • FIG. 1 and FIG. 2 is a schematic cross-sectional structure diagram of a processing mold for a three-dimensional glass substrate provided by the present invention, which is used for thermally bending a flat glass into a glass substrate having a three-dimensional glass structure.
  • the processing mold 100 includes a female mold 70 having a receiving cavity and a male mold 90 cooperating with the female mold 70.
  • the female mold 70 includes a base 71 and a side that cooperates with the base 71 to surround the receiving cavity 73
  • the convex mold 90 includes a convex block 91. When the mold is closed, the convex block 91 extends into the receiving cavity 73 and is spaced apart from the side arm 72.
  • the convex block 91 cooperates with the base 71 and The side arms 72 together form a molding space for molding a three-dimensional glass structure.
  • the base 71 includes an inner surface 711 located at the bottom of the receiving cavity;
  • the side arm 72 includes a first upper surface 721, a first connected to the first upper surface 721 and facing the receiving cavity 73
  • the inner side surface 722 and the forming surface 723 connecting the first inner side surface 722 and the inner surface 711, the inner surface 711, the first inner side surface 722, and the forming surface 723 together form the receiving cavity, preferably, the The forming surface 723 is a curved surface;
  • the bump 91 includes a first lower surface 911 facing the inner surface 711, a first outer side surface 912 extending from the first lower surface 911 toward a direction away from the base 71, A second lower surface 913 extending horizontally from the first outer surface 912 and a second outer surface 914 extending vertically from the second lower surface 913 in a direction away from the base 71, the second outer surface 914 directly facing The first inner side 722 of the side arm 72.
  • the second lower surface 913 of the bump 91 When the mold is closed, the second lower surface 913 of the bump 91 partially abuts on the forming surface 723 of the side arm 72, the inner surface 711, the forming surface 723, the first lower surface 911, The first outer side surface 912 and the second lower surface 913 together form the molding space.
  • the distance between the inner surface 711 and the first lower surface 911 and the distance between the first outer side surface 912 and the forming surface 723 are equal to the thickness of the flat glass.
  • the inner surface 711 and the first lower surface 911 are both horizontal planes, and the first inner side surface 722 and the second outer side surface 914 are vertical surfaces.
  • the male die 90 further includes a retaining wall 92 provided on the outer periphery of the convex block 91 and spaced apart from it to form a groove 93, and the side arm 72 of the female die 70 is locked in the female die ⁇ 93 ⁇ Groove 93. More preferably, the side arm 72 is disposed near the edge of the base 71, and the edge of the base 71 supports the retaining wall 92 when the mold is closed.
  • the thermal expansion coefficient of the male mold 90 is larger than that of glass, and the thermal expansion coefficient of the female mold 70 is smaller than that of glass.
  • the shrinkage speed of the male mold 90 is higher than that of the glass, The shrinking speed is less than that of glass, so 3D glass products are easy to take out, improving the yield.
  • a flat glass 40 is provided, which is fixed to the female mold 70, and then the male mold 90 and the female mold 70 are closed to make the flat glass 40
  • a glass substrate 50 including a body portion 51 and a bent portion 52 bent and extending from the body portion 51 is formed.
  • the structure of the glass substrate 50 is shown in FIG. 5.
  • the body portion 51 has a flat plate shape, and the angle between the bending portion 52 and the body portion 51 is between 90° and 100°. Specifically, the angle is a tangent to the end of the bending portion The angle between the horizontal plane and toward the inside is the angle ⁇ shown in FIG. 5.
  • the present invention also provides a mold 200 for processing an inverted glass plate, which is used to process a three-dimensional glass substrate 50 to form an inverted glass plate 60.
  • the inverted glass plate 60 includes a main body 61.
  • a receiving space 64 enclosing one end is formed.
  • the extending portion 63 includes a first outer surface 631 facing away from the receiving space 64.
  • the first outer surface 631 includes a first end point 631A away from the main body portion 61 and A connection point 631B connected to the transition portion 62, a tangent direction of the first outer surface 631 at the connection point 631B is perpendicular to a horizontal direction, and a tangent direction of the first outer surface 631 at the first endpoint 631A
  • the angle between the horizontal direction and the storage space 64 is ⁇ , and the value of ⁇ satisfies: 90° ⁇ 180°, preferably, the value of ⁇ satisfies: 110° ⁇ 180°;
  • the horizontal distance between the connection point 631B and the first end point 631A is set to U, and the range of the U is 0.15-1 mm.
  • the reverse glass plate 60 has a reverse structure, and the size of the opening of the receiving space 64 is smaller than the size of the inside of the receiving space 64, which makes the appearance more beautiful, better grip, and convenient for installation.
  • the processing mold 200 of the inverted glass plate includes a lower mold 10 having a cavity 13 and an upper mold 30 matched with the lower mold 10, and the lower mold 10 includes a bottom wall 11 and The bottom wall 11 cooperates with the side wall 12 surrounding the cavity 13.
  • the side wall 12 is connected to the bottom wall 11 in an arc-shaped transition.
  • the upper mold 30 includes a protrusion 31.
  • the protrusion 31 extends into the cavity and is spaced apart from the side wall 12, and the distance between the protrusion 31 and the side wall 12 is greater than or equal to the sum of the thickness of the extension 63 and the distance U, And the sum of the thickness of the extension portion 63 which is less than or equal to twice and the distance U.
  • the overall shape of the glass substrate 50 is the same as or similar to the shape of the cavity 13 because the distance between the protrusion 31 and the side wall 12 is greater than or equal to the sum of the thickness of the extension 63 and the distance U , And less than or equal to twice the sum of the thickness of the extension portion 63 and the distance U, so when closing the mold, the protrusion 31 gradually extends into the cavity 13 in the process of squeezing the body portion 51, so
  • the bending portion 52 acts on the side wall 12 of the lower mold 10 during the mold clamping process, and is hot-pressed to form a transition portion 62 of the flip glass plate 60 and an extension portion 63 that bends and extends from the edge of the transition portion 62.
  • the side wall 12 includes a receiving surface 121 that receives the bent portion 52 and a connecting surface 122 that connects the receiving surface 121 and the bottom wall 11;
  • the protrusion 31 includes a surface directly facing the bottom wall
  • the top surface 311 of 11 and the side surface 312 extending from the top surface 311 in a direction away from the bottom wall 11, the distance between the side surface 312 and the receiving surface 121 is larger than that of the side surface 312 and the
  • the distance between the connecting surface 122, and the distance between the side surface 312 and the connecting surface 122 is greater than or equal to the sum of the thickness of the extension 63 and the distance U, and is less than or equal to twice the thickness of the extension 63
  • the sum of the distance U makes use of the difference in size between the protrusion 31 of the upper mold 30 and the side wall 12 of the lower mold 10 so that the end of the bending portion 52 away from the body portion 51 faces the housing
  • the space side is bent and extended to form an inverted structure.
  • the bottom wall 11 is a flat surface
  • the receiving surface 121 and the connecting surface 122 are arc surfaces
  • the side surface 312 is a vertical surface
  • the shape of the top surface 311 is the same as the bottom surface The shape of the wall 11 matches.
  • the present invention also provides a method for processing an inverted glass plate, as shown in FIG. 11, including:
  • Step S1 a glass substrate 50 is provided, and the glass substrate 50 includes a body portion 51 and a bending portion 52 bent and extending from the body portion;
  • the processing method of the glass substrate 50 specifically includes the following steps:
  • Step S11 providing flat glass 40
  • Step S12 Provide a processing mold 100, which is the processing mold 100 described above;
  • the processing mold 100 includes a female mold 70 and a male mold 90, the female mold 70 is provided with a receiving cavity, and the male mold 90 is provided with a convex block 91 which cooperates with the receiving cavity, surrounding the The distance between the surface of the receiving cavity and the surface forming the bump 91 is equal to the thickness of the planar glass 40.
  • the thermal expansion coefficient of the male mold 90 is greater than that of glass, and the thermal expansion coefficient of the female mold 70 is smaller than that of glass ;
  • Step S13 Fix the flat glass 40 to the female mold 70, mold the male mold 90 and the female mold 70, so that the flat glass 40 forms a glass substrate 50 including a body portion 51 and a bent portion 52 .
  • Step S2. Provide a processing mold 200 for the inverted glass plate.
  • the processing mold 200 of the inverted glass plate includes a lower mold 10 having a cavity 13 and an upper mold 30 cooperating with the lower mold 10, and the lower mold 10 includes cooperating to form the mold
  • the bottom wall 11 and the side wall 12 of the cavity 13 the upper mold 30 includes a protrusion 31, and other structures are not described in detail.
  • Step S3 Put the glass substrate 50 into the cavity 13, the bent portion 52 of the glass substrate 50 abuts on the side wall 12 so that the body portion 51 of the glass substrate 50 and the bottom wall 11 Space is formed between them, as shown in Figure 13.
  • Step S4 Warm up the glass substrate 50 and the processing mold 200 of the inverted glass plate to the glass softening temperature
  • the softening temperature is usually 500° C. to 800° C., preferably 700° C.
  • the glass softening temperature is specifically 700° C. and is maintained for 3 minutes.
  • 200 is the mold opening state, and the upper mold 30 has not yet extended into the cavity of the lower mold 10 to prepare for the subsequent mold clamping.
  • Step S5 The upper mold 30 and the lower mold 10 are clamped so that the glass substrate 50 is hot-pressed to form an inverted glass plate 60.
  • the protrusion 31 presses against the body portion 51 of the glass substrate 50 until the body portion 51 is attached to the bottom wall 11 of the lower mold 10 to form an undercut
  • the main body portion 61 of the glass plate 60, the bent portion 52 acts on the side wall 12 during the mold clamping process, and is hot pressed to form the transition portion 62 of the inverted glass plate 60 and the extension extending from the edge of the transition portion 62 Part 63
  • the body part 61 cooperates with the transition part 62 and the extension part 63 to form a receiving space 64 with one end open
  • the extension part 63 includes a first outer surface 631 facing away from the receiving space 64
  • the first outer surface 631 includes a first end point 631A away from the main body 61 and a connection point 631B connected to the transition portion 62, the tangent direction of the first outer surface 631 at the connection point 631B is perpendicular to In the horizontal direction, the angle between the tangent direction of the first end point 631A and
  • Step S6 Cooling: cooling the reverse glass plate 60 and the processing mold 200 of the reverse glass plate to room temperature
  • the inverted glass plate 60 is automatically separated from the upper mold 30 and the lower mold 10 during the cooling process.
  • Step S7 demolding: separating the inverted glass plate 60 from the lower mold 10 and the upper mold 30 to complete demolding.
  • the structure of the inverted glass plate 60 is shown in FIG. 6, and the specific structure will not be described in detail.
  • the processing mold 200 of the inverted glass plate of the present invention forms the inverted structure of the bent portion 52 of the glass substrate 50 through the size difference between the upper mold 30 and the lower mold 10, which has a simple structure and is easy to implement Advantage, while simplifying the forming process of the glass substrate and improving the forming efficiency of the glass substrate; when the inverted glass plate 60 is used as a casing of the mobile terminal, the inverted structure can effectively hold the display module of the mobile terminal, and Better hand grip for users.

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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

一种倒扣玻璃板的加工模具及加工方法，倒扣玻璃板（60）包括主体部（61）、过渡部（62）及延伸部（63），延伸部（63）包括背离收容空间（64）的第一外表面（631），第一外表面（631）包括远离主体部（61）的第一端点（631A）以及与过渡部（62）相连的连接点（631B），第一外表面（631）在连接点（631B）的切线方向垂直于水平方向，在第一端点（631A）的切线方向与水平方向之间且远离收容空间（64）的夹角为θ，且θ值满足：90°＜θ≤180°，连接点（631B）与第一端点（631A）之间的水平距离为U，加工模具（200）包括具有型腔（13）的下模具（10）和与下模具（10）配合的上模具（30），下模具（10）包括配合围成型腔（13）的底壁（11）和侧壁（12），上模具（30）包括凸起（31），合模时，凸起（31）伸入型腔（13）并与侧壁（12）间隔设置，且凸起（31）与侧壁（12）之间的间距大于等于延伸部（63）的厚度与距离U的总和，且小于等于两倍的延伸部（63）的厚度与距离U的总和。

Description

倒扣玻璃板的加工模具及加工方法 技术领域
本发明属于玻璃成形技术领域，尤其涉及一种倒扣玻璃板的加工模具及加工方法。
 背景技术
随着互联网时代的发展，电子设备的运用越来越多的进入人们的生活，比如手机、平板电脑、笔记本等。除了功能需求，人们对电子设备的外型要求也越来越高，电子设备的外壳越来越多的使用三维玻璃产品。
相关技术中，一般采用玻璃基材加工模具通过热弯成型来生产三维玻璃产品，该种玻璃基材加工模具通常包括具有型腔的凹模及与凹模配合的凸模，合模后，凹模与凸模之间会围成具有预设形状的间隙，从而利用该间隙来局限热熔状态的玻璃基材的形状使其成型，然后进行冷却以成型具有预设形状的三维玻璃产品。
 技术问题
然而，相关技术中的玻璃基材加工模具仅能实现玻璃基材边角的90°或90°以下的弯折加工，限制了更大角度的弯折。
因此，有必要提供一种改进的玻璃基材加工模具及玻璃基材加工方法来解决上述问题。
 技术解决方案
本发明要解决的技术问题是提供一种可将三维结构的玻璃基板热弯形成倒扣玻璃板的加工模具及加工方法。
为解决上述技术问题，本发明提供了一种倒扣玻璃板的加工模具，用于加工三维结构的玻璃基板使其形成倒扣玻璃板，所述倒扣玻璃板包括主体部、自所述主体部边缘弯折延伸的过渡部及自所述过渡部边缘弯折延伸的延伸部，所述主体部配合所述过渡部和所述延伸部共同围成一端开口的收容空间，所述延伸部包括背离所述收容空间的第一外表面，所述第一外表面包括远离所述主体部的第一端点以及与所述过渡部相连的连接点，所述第一外表面在所述连接点的切线方向垂直于水平方向，所述第一外表面在所述第一端点的切线方向与水平方向之间且远离所述收容空间的夹角为θ，且θ值满足：90°＜θ≤180°，所述连接点与所述第一端点之间的水平距离为U，所述加工模具包括具有型腔的下模具和与所述下模具配合的上模具，所述下模具包括配合围成所述型腔的底壁和侧壁，所述上模具包括凸起，合模时，所述凸起伸入所述型腔并与所述侧壁间隔设置，且所述凸起与所述侧壁之间的间距大于等于所述延伸部的厚度与距离U的总和，且小于等于两倍的延伸部的厚度与距离U的总和。
优选的，所述θ值满足：110°≤θ≤180°。
优选的，所述U的范围为0.15-1mm。
优选的，所述玻璃基板包括本体部及自所述本体部弯折延伸的弯折部，所述下模具的侧壁包括承接所述弯折部的承接面及连接所述承接面与所述底壁的连接面。
优选的，所述凸起的外表面包括正对所述底壁的顶面和自所述顶面朝背离所述底壁方向延伸的侧面，所述侧面为竖直面，合模时，所述侧面与所述承接面之间的间距大于所述侧面与所述连接面之间的间距，且所述侧面与所述连接面之间的间距大于等于所述延伸部的厚度与距离U的总和，且小于等于两倍的延伸部的厚度与距离U的总和。
优选的，所述下模具的底壁为平面。
优选的，所述承接面和所述连接面均为弧面。
优选的，所述本体部与所述弯折部之间的夹角在90°~100°之间。
本发明同时还提供一种倒扣玻璃板的加工方法，包括：
提供玻璃基板，所述玻璃基板包括本体部及自所述本体部弯折延伸的弯折部；
提供倒扣玻璃板的加工模具，所述倒扣玻璃板的加工模具包括具有型腔的下模具和与所述下模具配合的上模具，所述下模具包括配合围成所述型腔的底壁和侧壁，所述上模具包括凸起；
将所述玻璃基板放入所述型腔，所述玻璃基板的弯折部抵接于所述侧壁从而使得所述玻璃基板的本体部与所述底壁之间形成间隔空间；
将玻璃基板及倒扣玻璃板的加工模具升温到玻璃软化温度；
将所述上模具与所述下模具合模使得所述玻璃基板热压形成倒扣玻璃板，在合模过程中，所述凸起抵压所述玻璃基板的本体部直至所述本体部贴合于所述下模具的底壁从而形成倒扣玻璃板的主体部，所述弯折部在合模过程中热压形成倒扣玻璃板的过渡部及自所述过渡部边缘弯折延伸的延伸部，所述主体部配合所述过渡部和所述延伸部共同围成一端开口的收容空间，所述延伸部包括背离所述收容空间的第一外表面，所述第一外表面包括远离所述主体部的第一端点以及与所述过渡部相连的连接点，所述第一外表面在所述连接点的切线方向垂直于水平方向，所述第一外表面在所述第一端点的切线方向与水平方向之间且远离所述收容空间的夹角为θ，且θ值满足：90°＜θ≤180°，所述连接点与所述第一端点之间的水平距离为U，所述凸起与所述侧壁之间的间距大于等于所述延伸部的厚度与距离U的总和，且小于等于两倍的延伸部的厚度与距离U的总和。
优选的，所述玻璃基板的加工方法包括：提供平面玻璃；提供凹模与凸模，所述凹模设有收容腔，所述凸模设有与所述收容腔配合的凸块，围成所述收容腔的表面与形成所述凸块的表面之间的距离等于所述平面玻璃的厚度；将平面玻璃固定于所述凹模，将所述凸模与所述凹模合模，使得平面玻璃形成包括本体部与弯折部的玻璃基板。
优选的，所述本体部为平板状。
优选的，所述本体部与所述弯折部之间的夹角在90°~100°之间。
优选的，所述θ值满足：110°≤θ≤180°。
优选的，所述U的范围为0.15-1mm。
优选的，所述下模具的侧壁包括承接所述弯折部的承接面及连接所述承接面与所述底壁的连接面。
优选的，所述凸起的外表面包括正对所述底壁的顶面和自所述顶面朝背离所述底壁方向延伸的侧面，所述侧面为竖直面，合模时，所述侧面与所述连接面之间的间距大于所述侧面与所述承接面之间的间距，且所述侧面与所述连接面之间的间距大于等于所述延伸部的厚度与距离U的总和，且小于等于两倍的延伸部的厚度与距离U的总和。
优选的，所述承接面和所述连接面均为弧面。
 有益效果
与相关技术相比，本发明的倒扣玻璃板的加工模具通过上模具与下模具之间的尺寸差使得玻璃基板的弯折部形成倒扣结构，具有结构简单、实施方便的优点，同时简化了玻璃基板的成形工艺，提高了玻璃基板的成形效率；当玻璃基板作为移动终端的外壳使用时，该倒扣结构可以给使用者更佳的手持握感。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本发明提供的三维玻璃基板的加工模具合模前的剖面结构示意图；
图2为本发明提供的三维玻璃基板的加工模具合模后的剖面结构示意图；
图3为图1所示加工模具与玻璃基板的一种实施状态的剖面结构示意图；
图4为图1所示加工模具与玻璃基板的另一种实施状态的剖面结构示意图；
图5为平面玻璃经图1所示加工模具成型后的结构示意图；
图6为倒扣玻璃板的结构示意图；
图7为本发明提供的倒扣玻璃板的加工模具的立体结构示意图；
图8为本发明提供的倒扣玻璃板的加工模具的分解示意图；
图9为本发明提供的倒扣玻璃板的加工模具合模前的剖面结构示意图；
图10为本发明提供的倒扣玻璃板的加工模具合模后的剖面结构示意图；
图11为本发明提供的倒扣玻璃板的加工方法的流程图；
图12为本发明倒扣玻璃板的加工方法中步骤S2的状态示意图；
图13为本发明倒扣玻璃板的加工方法中步骤S3的状态示意图；
图14为本发明倒扣玻璃板的加工方法中步骤S5的状态示意图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
请结合参阅图1和图2，为本发明提供的三维玻璃基板的加工模具的剖面结构示意图，用于将平面玻璃热弯折成具有三维玻璃结构的玻璃基板。所述加工模具100包括具有收容腔的凹模70以及与所述凹模70配合的凸模90，所述凹模70包括底座71和与所述底座71配合围成所述收容腔73的侧臂72，所述凸模90包括凸块91，合模时，所述凸块91伸入所述收容腔73并与所述侧臂72间隔设置，所述凸块91配合所述底座71和所述侧臂72共同围成用于成型三维玻璃结构的成型空间。
具体地，所述底座71包括位于所述收容腔底部的内表面711；所述侧臂72包括第一上表面721、与所述第一上表面721相连并朝向所述收容腔73的第一内侧面722和连接所述第一内侧面722和所述内表面711的成形面723，所述内表面711、第一内侧面722及成形面723共同形成所述收容腔，优选的，所述成形面723为弧面；所述凸块91包括正对所述内表面711的第一下表面911、自所述第一下表面911朝背离所述底座71方向延伸的第一外侧面912、自所述第一外侧面912水平延伸的第二下表面913以及自所述第二下表面913朝远离所述底座71方向垂直延伸的第二外侧面914，所述第二外侧面914正对所述侧臂72的第一内侧面722。合模时，所述凸块91的第二下表面913部分抵接于所述侧臂72的成形面723上，所述内表面711、所述成形面723、所述第一下表面911、所述第一外侧面912及所述第二下表面913共同围成所述成型空间。所述内表面711与所述第一下表面911之间的间距以及所述第一外侧面912与所述成形面723之间的间距等于平面玻璃的厚度。
在本实施例中，所述内表面711和所述第一下表面911均为水平面，所述第一内侧面722和所述第二外侧面914为竖直面。
优选地，所述凸模90还包括设于所述凸块91外周并与其间隔设置形成凹槽93的挡墙92，合模时，所述凹模70的侧臂72卡设于所述凹槽93内。更优地，所述侧臂72靠近所述底座71的边缘设置，合模时，所述底座71的边缘承托所述挡墙92。
优选地，所述凸模90的热膨胀系数大于玻璃，所述凹模70的热膨胀系数小于玻璃，在三维玻璃产品冷却过程中，所述凸模90的收缩速度大于玻璃，所述凹模70的收缩速度小于玻璃，所以三维玻璃产品易于取出，提高了成品率。
请结合参阅图3至图5，加工时，首先提供平面玻璃40，将其固定于所述凹模70，然后将所述凸模90和所述凹模70合模，使得所述平面玻璃40形成包括本体部51和自所述本体部51弯折延伸的弯折部52的玻璃基板50，所述玻璃基板50的结构如图5所示。优选的，所述本体部51为平板状，所述弯折部52与所述本体部51之间的夹角在90°~100°之间，具体的，夹角为弯折部端点的切线与水平面之间、且朝向内侧的夹角，即图5中所示的α角。
本发明还提供了一种倒扣玻璃板的加工模具200，用于加工三维结构的玻璃基板50使其形成倒扣玻璃板60，如图6所示，所述倒扣玻璃板60包括主体部61、自所述主体部61边缘弯折延伸的过渡部62及自所述过渡部62边缘弯折延伸的延伸部63，所述主体部61配合所述过渡部62和所述延伸部63共同围成一端开口的收容空间64，所述延伸部63包括背离所述收容空间64的第一外表面631，所述第一外表面631包括远离所述主体部61的第一端点631A以及与所述过渡部62相连的连接点631B，所述第一外表面631在所述连接点631B的切线方向垂直于水平方向，所述第一外表面631在所述第一端点631A的切线方向与水平方向之间且远离所述收容空间64的夹角为θ，且θ值满足：90°＜θ≤180°，优选的，所述θ值满足：110°≤θ≤180°；所述连接点631B与所述第一端点631A之间的水平距离设为U，所述U的范围为0.15-1mm。所述倒扣玻璃板60具有倒扣结构，所述收容空间64开口处的尺寸小于收容空间64内部的尺寸，使得外观更美观，握感更优，同时方便安装。
请结合参阅图7-10，所述倒扣玻璃板的加工模具200包括具有型腔13的下模具10和与所述下模具10配合的上模具30，所述下模具10包括底壁11与所述底壁11配合围成所述型腔13的侧壁12，所述侧壁12与所述底壁11弧形过渡连接，所述上模具30包括凸起31，合模时，所述凸起31伸入所述型腔并与所述侧壁12间隔设置，且所述凸起31与所述侧壁12之间的间距大于等于所述延伸部63的厚度与距离U的总和，且小于等于两倍的延伸部63的厚度与距离U的总和。
所述玻璃基板50的整体形状与所述型腔13的形状相同或相似，由于所述凸起31与所述侧壁12之间的间距大于等于所述延伸部63的厚度与距离U的总和，且小于等于两倍的延伸部63的厚度与距离U的总和，所以在合模时，所述凸起31在逐渐伸入所述型腔13的过程中挤压所述本体部51，所述弯折部52在合模过程中与下模具10的侧壁12作用、热压形成倒扣玻璃板60的过渡部62及自所述过渡部62边缘弯折延伸的延伸部63。
具体地，所述侧壁12包括承接所述弯折部52的承接面121及连接所述承接面121与所述底壁11的连接面122；所述凸起31包括正对所述底壁11的顶面311和自所述顶面311朝背离所述底壁11方向延伸的侧面312，合模时，所述侧面312与所述承接面121之间的间距大于所述侧面312与所述连接面122之间的间距，且所述侧面312与所述连接面122之间的间距大于等于所述延伸部63的厚度与距离U的总和，且小于等于两倍的延伸部63的厚度与距离U的总和，利用所述上模具30的凸起31与所述下模具10的侧壁12之间的尺寸差使得所述弯折部52远离所述本体部51的一端朝所述收容空间侧弯曲延伸形成倒扣结构。
在本实施例中，所述底壁11为平面，所述承接面121和所述连接面122均为弧面，所述侧面312为竖直面，所述顶面311的形状与所述底壁11的形状相匹配。
本发明还提供一种倒扣玻璃板的加工方法，如图11所示，包括：
步骤S1、提供玻璃基板50，所述玻璃基板50包括本体部51及自所述本体部弯折延伸的弯折部52；
在此步骤中，所述玻璃基板50的加工方法具体包括如下步骤：
步骤S11、提供平面玻璃40；
步骤S12、提供加工模具100，所述加工模具100为上文所述加工模具100；
如上所述，所述加工模具100包括凹模70与凸模90，所述凹模70设有收容腔，所述凸模90设有与所述收容腔配合的凸块91，围成所述收容腔的表面与形成所述凸块91的表面之间的距离等于所述平面玻璃40的厚度，优选的，所述凸模90的热膨胀系数大于玻璃，所述凹模70的热膨胀系数小于玻璃；
步骤S13、将所述平面玻璃40固定于所述凹模70，将所述凸模90与所述凹模70合模，使得平面玻璃40形成包括本体部51和弯折部52的玻璃基板50。
步骤S2、提供倒扣玻璃板的加工模具200。
如图12所示，所述倒扣玻璃板的加工模具200包括具有型腔13的下模具10和与所述下模具10配合的上模具30，所述下模具10包括配合围成所述型腔13的底壁11和侧壁12，所述上模具30包括凸起31，其它结构不再赘述。
步骤S3、将所述玻璃基板50放入所述型腔13，所述玻璃基板50的弯折部52抵接于所述侧壁12从而使得玻璃基板50的本体部51与所述底壁11之间形成间隔空间，如图13所示。
步骤S4、将所述玻璃基板50及所述倒扣玻璃板的加工模具200升温到玻璃软化温度；
具体地，软化温度通常为500℃至800℃，优选为700℃，在本实施例中，所述玻璃软化温度具体为700℃，并保持3min，此过程中所述倒扣玻璃板的加工模具200为开模状态，所述上模具30尚未伸入所述下模具10的型腔内，为后续的合模做准备。
步骤S5、将所述上模具30与所述下模具10合模使得玻璃基板50热压形成倒扣玻璃板60。
如图14所示，在合模过程中，所述凸起31抵压所述玻璃基板50的本体部51直至所述本体部51贴合于所述下模具10的底壁11从而形成倒扣玻璃板60的主体部61，所述弯折部52在合模过程中与侧壁12作用、热压形成倒扣玻璃板60的过渡部62及自所述过渡部62边缘弯折延伸的延伸部63，所述主体部61配合所述过渡部62和所述延伸部63共同围成一端开口的收容空间64，所述延伸部63包括背离所述收容空间64的第一外表面631，所述第一外表面631包括远离所述主体部61的第一端点631A以及与所述过渡部62相连的连接点631B，所述第一外表面631在所述连接点631B的切线方向垂直于水平方向，所述第一外表面631在所述第一端点631A的切线方向与水平方向之间且远离所述收容空间64的夹角为θ，且θ值满足：90°＜θ≤180°，优选的，所述θ值满足：110°≤θ≤180°，所述连接点631B与所述第一端点631A之间的水平距离设为U，所述U的范围为0.15-1mm。
步骤S6、冷却：将所述倒扣玻璃板60和所述倒扣玻璃板的加工模具200进行冷却至室温；
在此步骤中，所述倒扣玻璃板60在冷却过程中与所述上模具30和所述下模具10自动分离。
步骤S7，脱模：将所述倒扣玻璃板60与所述下模具10和所述上模具30分离，完成脱模。
脱模后，所述倒扣玻璃板60的结构如图6所示，具体结构不再赘述。
与相关技术相比，本发明的倒扣玻璃板的加工模具200通过上模具30与下模具10之间的尺寸差使得玻璃基板50的弯折部52形成倒扣结构，具有结构简单、实施方便的优点，同时简化了玻璃基板的成形工艺，提高了玻璃基板的成形效率；当倒扣玻璃板60作为移动终端的外壳使用时，该倒扣结构可以有效固持移动终端的显示模组，而且给使用者更佳的手持握感。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (17)

  1. 一种倒扣玻璃板的加工模具，用于加工三维结构的玻璃基板使其形成倒扣玻璃板，所述倒扣玻璃板包括主体部、自所述主体部边缘弯折延伸的过渡部及自所述过渡部边缘弯折延伸的延伸部，所述主体部配合所述过渡部和所述延伸部共同围成一端开口的收容空间，所述延伸部包括背离所述收容空间的第一外表面，所述第一外表面包括远离所述主体部的第一端点以及与所述过渡部相连的连接点，所述第一外表面在所述连接点的切线方向垂直于水平方向，所述第一外表面在所述第一端点的切线方向与水平方向之间且远离所述收容空间的夹角为θ，且θ值满足：90°＜θ≤180°，所述连接点与所述第一端点之间的水平距离为U，其特征在于，所述加工模具包括具有型腔的下模具和与所述下模具配合的上模具，所述下模具包括配合围成所述型腔的底壁和侧壁，所述上模具包括凸起，合模时，所述凸起伸入所述型腔并与所述侧壁间隔设置，且所述凸起与所述侧壁之间的间距大于等于所述延伸部的厚度与距离U的总和，且小于等于两倍的延伸部的厚度与距离U的总和。
  2. 根据权利要求1所述的倒扣玻璃板的加工模具，其特征在于，所述θ值满足：110°≤θ≤180°。
  3. 根据权利要求1所述的倒扣玻璃板的加工模具，其特征在于，所述U的范围为0.15-1mm。
  4. 根据权利要求1所述的倒扣玻璃板的加工模具，其特征在于，所述玻璃基板包括本体部及自所述本体部弯折延伸的弯折部，所述下模具的侧壁包括承接所述弯折部的承接面及连接所述承接面与所述底壁的连接面。
  5. 根据权利要求4所述的倒扣玻璃板的加工模具，其特征在于，所述凸起的外表面包括正对所述底壁的顶面和自所述顶面朝背离所述底壁方向延伸的侧面，所述侧面为竖直面，合模时，所述侧面与所述承接面之间的间距大于所述侧面与所述连接面之间的间距，且所述侧面与所述连接面之间的间距大于等于所述延伸部的厚度与距离U的总和，且小于等于两倍的延伸部的厚度与距离U的总和。
  6. 根据权利要求5所述的倒扣玻璃板的加工模具，其特征在于，所述下模具的底壁为平面。
  7. 根据权利要求4所述的倒扣玻璃板的加工模具，其特征在于，所述承接面和所述连接面均为弧面。
  8. 根据权利要求4所述的倒扣玻璃板的加工模具，其特征在于，所述本体部与所述弯折部之间的夹角在90°~100°之间。
  9. 一种倒扣玻璃板的加工方法，其特征在于，包括：
    提供玻璃基板，所述玻璃基板包括本体部及自所述本体部弯折延伸的弯折部；
    提供倒扣玻璃板的加工模具，所述倒扣玻璃板的加工模具包括具有型腔的下模具和与所述下模具配合的上模具，所述下模具包括配合围成所述型腔的底壁和侧壁，所述上模具包括凸起；
    将所述玻璃基板放入所述型腔，所述玻璃基板的弯折部抵接于所述侧壁从而使得所述玻璃基板的本体部与所述底壁之间形成间隔空间；
    将玻璃基板及倒扣玻璃板的加工模具升温到玻璃软化温度；
    将所述上模具与所述下模具合模使得所述玻璃基板热压形成倒扣玻璃板，在合模过程中，所述凸起抵压所述玻璃基板的本体部直至所述本体部贴合于所述下模具的底壁从而形成倒扣玻璃板的主体部，所述弯折部在合模过程中热压形成倒扣玻璃板的过渡部及自所述过渡部边缘弯折延伸的延伸部，所述主体部配合所述过渡部和所述延伸部共同围成一端开口的收容空间，所述延伸部包括背离所述收容空间的第一外表面，所述第一外表面包括远离所述主体部的第一端点以及与所述过渡部相连的连接点，所述第一外表面在所述连接点的切线方向垂直于水平方向，所述第一外表面在所述第一端点的切线方向与水平方向之间且远离所述收容空间的夹角为θ，且θ值满足：90°＜θ≤180°，所述连接点与所述第一端点之间的水平距离为U，所述凸起与所述侧壁之间的间距大于等于所述延伸部的厚度与距离U的总和，且小于等于两倍的延伸部的厚度与距离U的总和。
  10. 根据权利要求9所述的倒扣玻璃板的加工方法，其特征在于，所述玻璃基板的加工方法包括：
    提供平面玻璃；
    提供凹模与凸模，所述凹模设有收容腔，所述凸模设有与所述收容腔配合的凸块，围成所述收容腔的表面与形成所述凸块的表面之间的距离等于所述平面玻璃的厚度；
    将所述平面玻璃固定于所述凹模，将所述凸模与所述凹模合模，使得平面玻璃形成包括本体部与弯折部的玻璃基板。
  11. 根据权利要求10所述的倒扣玻璃板的加工方法，其特征在于，所述本体部为平板状。
  12. 根据权利要求10所述的倒扣玻璃板的加工方法，其特征在于，所述本体部与所述弯折部之间的夹角在90°~100°之间。
  13. 根据权利要求9所述的倒扣玻璃板的加工方法，其特征在于，所述θ值满足：110°≤θ≤180°。
  14. 根据权利要求9所述的倒扣玻璃板的加工方法，其特征在于，所述U的范围为0.15-1mm。
  15. 根据权利要求9所述的倒扣玻璃板的加工方法，其特征在于，所述下模具的侧壁包括承接所述弯折部的承接面及连接所述承接面与所述底壁的连接面。
  16. 根据权利要求15所述的倒扣玻璃板的加工方法，其特征在于，所述凸起的外表面包括正对所述底壁的顶面和自所述顶面朝背离所述底壁方向延伸的侧面，所述侧面为竖直面，合模时，所述侧面与所述连接面之间的间距大于所述侧面与所述承接面之间的间距，且所述侧面与所述连接面之间的间距大于等于所述延伸部的厚度与距离U的总和，且小于等于两倍的延伸部的厚度与距离U的总和。
  17. 根据权利要求15所述的倒扣玻璃板的加工方法，其特征在于，所述承接面和所述连接面均为弧面。
     
PCT/CN2019/110860 2018-11-27 2019-10-12 倒扣玻璃板的加工模具及加工方法 Ceased WO2020108121A1 (zh)

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