WO2014008680A1 - 一种背板的凸包加工方法及背板 - Google Patents

一种背板的凸包加工方法及背板 Download PDF

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Publication number
WO2014008680A1
WO2014008680A1 PCT/CN2012/078996 CN2012078996W WO2014008680A1 WO 2014008680 A1 WO2014008680 A1 WO 2014008680A1 CN 2012078996 W CN2012078996 W CN 2012078996W WO 2014008680 A1 WO2014008680 A1 WO 2014008680A1
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Prior art keywords
convex hull
back plate
stress concentration
bend
strip
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PCT/CN2012/078996
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English (en)
French (fr)
Inventor
王利锋
萧宇均
余亚军
张彦学
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深圳市华星光电技术有限公司
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Priority to US13/582,421 priority Critical patent/US8915627B2/en
Publication of WO2014008680A1 publication Critical patent/WO2014008680A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02Stamping using rigid devices or tools
    • B21D22/04Stamping using rigid devices or tools for dimpling

Definitions

  • the present invention relates to the field of liquid crystal display devices, and more particularly to a bumper processing method and a back sheet for a back sheet.
  • the existing backlight module generally comprises a back plate, a middle frame, a light source, a light guiding device and an optical film.
  • the backsheet is generally stamped and formed from sheet metal.
  • the convex hull 8 is a feature on the backboard 1, and its height has a large relationship with its size. Generally, the convex hull 8 should have a height equal to or less than half of its diameter. If a higher extension is used, the convex hull 8 will be torn at the root and the strength will be affected.
  • Figure 2 shows the general flow of convex hull stretching on thin-walled sheet metal parts.
  • the forming of the convex hull does not change the volume of the drawing part of the sheet metal part, but the sheet metal area becomes larger due to the stretching, and the wall thickness thereof becomes thinner, that is, the wall thickness of the convex hull is thinner than other parts of the sheet metal part. .
  • the technical problem to be solved by the present invention is to provide a convex hull processing method and a backing plate for improving the strength of the convex hull on the back plate.
  • a method for processing a convex hull of a backboard comprising the steps of: ⁇ : setting a bend at a bend of a convex hull on the back panel surface is three perpendicular to a strip opening at the bend; ⁇ : punching out the shape of the convex hull.
  • a method for processing a convex hull of a backboard comprising the steps of: ⁇ : providing at least one stress concentration factor on a bend of a convex hull formed on the back panel surface; ⁇ : The shape of the convex hull is punched out.
  • two or more stress concentration factors are disposed at the bend forming the convex hull; and the stress concentration factors are all distributed at the bend.
  • the root of the convex hull can be subjected to stress release in each region during processing. Thereby avoiding tearing at the bend and increasing its strength.
  • the stress concentration factor is an opening disposed at the bend.
  • the opening has a large structural change at the bend, so that the stress concentration at the non-opening portion of the bend can be better alleviated.
  • the opening is a strip opening perpendicular to the bend. Since the convex hull is deformed perpendicularly to the direction of the bend during the drawing process, the provision of the strip-shaped opening perpendicular to the bend can obtain a better stress concentration effect, thereby further alleviating the stress concentration of the non-opening portion.
  • the bent portion of the convex hull on the back plate is distributed with three strip openings.
  • the use of three strip openings does not occupy excessive structural parts at the bend of the convex hull, so it does not affect the strength of the convex hull after forming, and at the same time, it can better provide a uniform and effective stress concentration area, alleviating non- The stress at the opening is concentrated.
  • a backboard includes: a plurality of convex hulls disposed on a surface of the backboard, wherein the convex portion of the convex hull is provided with at least one stress concentration factor.
  • two or more stress concentration factors are disposed at the bend of the convex hull; and the stress concentration factors are all distributed at the bend of the convex hull.
  • the roots of the convex hull can be relieved of stress in each region during processing, thereby avoiding tearing at the bending portion and improving the strength thereof.
  • the stress concentration factor is an opening disposed at the bend.
  • the opening has a large structural change at the bend, so that the stress concentration at the non-opening portion of the bend can be better alleviated.
  • the opening is a strip-shaped opening perpendicular to a bend line formed at the bend. Since the deformation of the convex hull during the drawing process is perpendicular to the direction of the bending, the vertical arrangement of the strip opening at the bending line of the bending portion can obtain a better stress concentration effect, thereby further alleviating the non-opening portion. Stress concentration.
  • the bent portion of the convex hull on the back plate is distributed with three strip openings.
  • the use of three strip openings does not take up too much area of the convex package bend, so it does not affect the convexity of the formed convex hull Degree, at the same time, there will be better stress concentration effect, which will alleviate the stress concentration at the non-opening.
  • a plurality of stress concentration factors are first set at the bending point of the convex hull stretching, and when the convex hull is stretched, the position where the stress concentration factor is disposed causes stress concentration, thereby alleviating the stress concentration.
  • There is no stress at the position where the stress concentration factor is set so that the phenomenon of tearing when the convex hull is stretched and the like is avoided, the strength of the convex hull is improved, and further, a convex hull with a higher height can be processed, or, in the convex hull In the case of a constant height, only a thin backing material (such as sheet metal) is required.
  • FIG. 1 is a structural view of a back plate of the prior art
  • FIG. 2 is a schematic view showing a processing process of a convex hull on a back plate in the prior art
  • FIG. 3 is a schematic view showing a processing process of a convex hull on a backboard according to an embodiment of the present invention
  • FIG. 4 is a partial structural view of a back plate in an embodiment of the present invention.
  • Figure 5 is a cross-sectional view of a convex hull in an embodiment of the present invention.
  • Figure 6 is a structural view of another convex hull in the embodiment of the present invention.
  • Fig. 7 is a structural view of a convex hull of another embodiment of the present invention.
  • the invention provides a method for processing a backboard, comprising the steps of: A: at least one stress concentration factor is provided at a bend forming a convex hull on the back panel surface; B: a shape of the convex hull is punched out.
  • the back plate 1 is a thin-walled sheet metal piece.
  • a convex hull is formed on the back plate 1 first.
  • the plurality of openings 11 distributed at the bends are punched out as stress concentration factors, and then the convex hulls 8 are formed by drawing.
  • the stress concentration factor is not limited to the form of the opening 11, but may also be provided at the bend to obtain the groove. Or a structure such as a depression, but the structure of the opening structure at the bend is abruptly changed, so that the stress concentration of the non-opening portion at the bend can be better alleviated.
  • the back plate obtained in the step of the embodiment has a strip structure which is perpendicular to the bend 17 of the convex hull 8.
  • the direction of deformation of the convex hull 8 during the stamping process is It is perpendicular to the direction of the bend 17, so that the provision of the strip-shaped opening 11 perpendicular to the bend 17 can achieve a better stress concentration effect, and the stress concentration of the portion of the bend 17 where the opening 11 is not provided can be better alleviated.
  • three evenly distributed strip openings 11 are provided at the bend 17 of the convex hull 8.
  • the convex hull 8 is made The root bending part can obtain the stress release of the hook in each area during processing, thereby avoiding the tearing of the bending portion and improving the strength of the convex hull 8; and using the three strip openings 11 does not occupy the convex hull 8
  • the excessive structural portion of the bend 17 does not affect the strength of the convex hull after molding, and at the same time, it can better provide a uniform and effective stress concentration region, and alleviate the stress concentration at the non-opening.
  • the bend 17 of the convex hull 8 can also be provided with two or four strip openings 11, and even one strip opening 11 can be provided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

本发明公开一种背板的凸包加工方法及背板,所述背板的凸包加工方法包括以下步骤:在背板板面上形成凸包的折弯处设置有至少一个应力集中因素;之后再冲出凸包的形状。本发明由于在凸包的抽伸过程中,首先在凸包抽伸时的折弯处先设置多个应力集中因素,当凸包抽伸时,设置有应力集中因素的位置会产生应力集中,从而缓解了没有设置应力集中因素的位置的应力,这样,就避免了凸包抽伸时发生扯裂等现象,提高了凸包的强度。

Description

一种背板的凸包加工方法及背板
【技术领域】
本发明涉及液晶显示装置领域, 更具体的说, 涉及一种背板的凸包加工方 法及背板。
【背景技术】
现有背光模组一般由背板、 中框、 光源、 导光器件及光学膜片组成。 其中 背板一般是由钣金件沖压成型。 如图 1所示, 凸包 8是背板 1上的特征, 其高 度与其大小有艮大的关系, 一般情况下, 凸包 8 的抽伸高度应等于或小于其直 径的一半。 如采用较高的抽伸, 会导致凸包 8在根部出现扯裂, 强度受到影响。
如图 2所示为薄壁钣金件上凸包抽伸的一般流程。 凸包的成型不改变钣金 件抽伸部分的体积, 但因抽伸而使钣金面积变大, 其壁厚会变薄, 也就是说凸 包的壁厚相较于钣金件上其它部分变薄。
【发明内容】
本发明所要解决的技术问题是提供一种提高背板上凸包强度的背板的凸包 加工方法及背板。
本发明的目的是通过以下技术方案来实现的: 一种背板的凸包加工方法, 包括步骤: Α: 在背板板面上将要形成凸包的折弯处均勾的设置三个垂直于所述 折弯处的条状开口; Β: 沖出凸包的形状。
本发明的目的还可以通过以下技术方案来实现: 一种背板的凸包加工方法, 包括步骤: Α: 在背板板面上将要形成凸包的折弯处设置有至少一个应力集中因 素; Β: 沖出凸包的形状。
优选的, 所述步骤 Α中, 在形成凸包的折弯处设置有两个以上的应力集中 因素; 所述应力集中因素均勾的分布在所述折弯处。 通过设置多个并且均匀分 布的应力集中因素, 使得凸包的根部折弯处在加工时各区域都可得到应力释放, 从而避免该折弯处发生扯裂, 提高其强度。
优选的, 所述步骤 A中, 所述应力集中因素为设置在所述折弯处的开口。 开口作为一种应力集中因素, 在折弯处的结构突变较大, 因而可以更好的緩解 折弯处非开口部分的应力集中。
优选的, 所述开口为垂直于折弯处的条状开口。 由于凸包在抽伸过程中变 形是与折弯处方向垂直的, 因而设置条状开口与折弯处垂直可以得到更好的应 力集中效果, 进而可以更好的緩解非开口部分的应力集中。
优选的, 所述背板上凸包的折弯处均勾的分布有三个条状开口。 使用三个 条状开口不会占用凸包折弯处的过多结构部分, 因而不会影响到成型后的凸包 的强度, 同时也能更好的提供均匀而有效的应力集中区域, 緩解非开口处的应 力集中。
一种背板, 包括: 设置在背板板面上的多个凸包, 所述凸包的折弯处设置 有至少一个应力集中因素。
优选的, 在凸包的折弯处设置有两个以上的应力集中因素; 所述应力集中 因素均勾的分布在所述凸包的折弯处。 通过设置多个并且均勾分布的应力集中 因素, 使得凸包的根部折弯处在加工时各区域都可得到应力释放, 从而避免该 折弯处发生扯裂, 提高其强度。
优选的, 所述步骤 A中, 所述应力集中因素为设置在所述折弯处的开口。 开口作为一种应力集中因素, 在折弯处的结构突变较大, 因而可以更好的緩解 折弯处非开口部分的应力集中。
优选的, 所述开口为垂直于折弯处形成的折弯线的条状开口。 由于凸包在 抽伸过程中变形是与折弯处方向垂直的, 因而设置条状开口于折弯处的折弯线 垂直可以得到更好的应力集中效果, 进而可以更好的緩解非开口部分的应力集 中。
优选的, 所述背板上凸包的折弯处均勾的分布有三个条状开口。 使用三个 条状开口不会占用凸包折弯处的过多面积, 因而不会影响到成型后的凸包的强 度, 同时也会有更好的应力集中效果, 緩解非开口处的应力集中。
本发明由于在凸包的抽伸过程中, 首先在凸包抽伸时的折弯处先设置多个 应力集中因素, 当凸包抽伸时, 设置有应力集中因素的位置会产生应力集中, 从而緩解了没有设置应力集中因素的位置的应力, 这样, 就避免了凸包抽伸时 发生扯裂等现象, 提高了凸包的强度, 进而, 可以加工出高度更高的凸包, 或 者, 在凸包的高度不变的情况下, 只需要较薄的背板材料(如钣金料) 即可。
【附图说明】
图 1是现有技术中背板的结构筒图;
图 2是现有技术中背板上的凸包的加工工艺示意图;
图 3是本发明实施例中背板上的凸包加工工艺示意图;
图 4是本发明实施例中背板上的局部结构筒图,
图 5是本发明实施例中凸包的剖面图;
图 6是本发明实施例中另一种凸包的结构筒图;
图 7是本发明实施例中又一种凸包的结构筒图。
其中: 1、 背板, 8、 凸包, 11、 开口, 17、 折弯处。
【具体实施方式】
下面结合附图和较佳的实施例对本发明作进一步说明。
本发明提供一种背板的加工方法, 包括步骤: A: 在背板板面上形成凸包的 折弯处设置有至少一个应力集中因素; B: 沖出凸包的形状。
下面结合附图和较佳的实施例对本发明作进一步说明。
如图 3所示为本发明的一个具体实施例, 背板 1为一薄壁钣金件, 在加工 背板上的凸包时, 即步骤 A中, 首先在背板 1上即将形成凸包的折弯处沖出分 布在所述折弯处的多个开口 11作为应力集中因素,然后在进行抽伸形成凸包 8。 当然, 应力集中因素并不限于开口 11的形式, 也可以是设置在折弯处得到凹槽 或者凹陷等结构, 但是开口结构在折弯处的结构突变较大, 因而可以更好的緩 解折弯处非开口部分的应力集中。
如图 4及图 5所示, 本实施例步骤中获得的背板, 开口 11为条状结构, 其 垂直于凸包 8的折弯处 17, 由于凸包 8在沖压过程中变形的方向是与折弯处 17 方向垂直的, 因而设置条状开口 11与折弯处 17垂直可以得到更好的应力集中 效果, 进而可以更好的緩解折弯处 17没有设置开口 11部分的应力集中。
如图 4所示, 本实施例中, 在凸包 8的折弯处 17设置了三个均匀分布的条 状开口 11 , 通过设置均匀分布的条状开口 11作为应力集中因素, 使得凸包 8的 根部折弯处在加工时各区域都可得到均勾的应力释放, 从而避免该折弯处发生 扯裂, 提高了凸包 8强度; 而使用三个条状开口 11不会占用凸包 8折弯处 17 的过多结构部分, 因而不会影响到成型后的凸包的强度, 同时也能更好的提供 均匀而有效的应力集中区域, 緩解非开口处的应力集中。
当然, 如图 6及图 7所示, 凸包 8的折弯处 17也可以设置两个或四个条状 开口 11 , 甚至, 可以仅设置一个条状开口 11。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明, 不 能认定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通 技术人员来说, 在不脱离本发明构思的前提下, 还可以做出若干筒单推演或替 换, 都应当视为属于本发明的保护范围。

Claims

权利要求
1、 一种背板的凸包加工方法, 包括步骤:
A:在背板板面上将要形成凸包的折弯处均匀的设置三个垂直于所述折弯处 的条状开口;
B: 沖出凸包的形状。
2、 一种背板的凸包加工方法, 包括步骤:
A: 在背板板面上将要形成凸包的折弯处设置有至少一个应力集中因素; B: 沖出凸包的形状。
3、 如权利要求 2所述的一种背板的凸包加工方法, 其中, 所述步骤 A中, 在形成凸包的折弯处设置有两个以上的应力集中因素; 所述应力集中因素均匀 的分布在所述折弯处。
4、 如权利要求 3所述的一种背板的凸包加工方法, 其中, 所述步骤 A中, 所述应力集中因素为设置在所述折弯处的开口。
5、 如权利要求 4所述的一种背板的凸包加工方法, 其中, 所述开口为垂直 于折弯处的条状开口。
6、 如权利要求 5所述的一种背板的凸包加工方法, 其中, 所述背板上凸包 的折弯处均匀的分布有三个条状开口。
7、 如权利要求 5所述的一种背板的凸包加工方法, 其中, 所述背板上凸包 的折弯处均勾的分布有两个条状开口。
8、 如权利要求 5所述的一种背板的凸包加工方法, 其中, 所述背板上凸包 的折弯处均勾的分布有四个条状开口。
9、 一种背板, 包括: 设置在背板板面上的多个凸包, 所述凸包的折弯处设 置有至少一个应力集中因素。
10、 如权利要求 9所述的一种背板, 其中, 在凸包的折弯处设置有两个以 上的应力集中因素; 所述应力集中因素均匀的分布在所述凸包的折弯处。
11、 如权利要求 10所述的一种背板, 其中 所述应力集中因素为设置在所 述折弯处的开口。
12、 如权利要求 11所述的一种背板, 其中 所述开口为垂直于折弯处形成 的折弯线的条状开口。
13、 如权利要求 12所述的一种背板, 其中 所述背板上凸包的折弯处均匀 的分布有三个条状开口。
14、 如权利要求 12所述的一种背板, 其中 所述背板上凸包的折弯处均匀 的分布有两个条状开口。
15、 如权利要求 12所述的一种背板, 其中 所述背板上凸包的折弯处均匀 的分布有四个条状开口。
PCT/CN2012/078996 2012-07-13 2012-07-23 一种背板的凸包加工方法及背板 WO2014008680A1 (zh)

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CN107234396A (zh) * 2017-07-27 2017-10-10 合肥晨润再生资源有限公司 一种点焊装置
DE102018107413A1 (de) * 2018-03-28 2019-10-02 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Verfahren zur Herstellung von einem aus plattenförmigem Material gefertigten Werkstück und Werkstück
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