CN100569410C - Processing technology of metal frame of LCD TV - Google Patents
Processing technology of metal frame of LCD TV Download PDFInfo
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- CN100569410C CN100569410C CNB2008100212194A CN200810021219A CN100569410C CN 100569410 C CN100569410 C CN 100569410C CN B2008100212194 A CNB2008100212194 A CN B2008100212194A CN 200810021219 A CN200810021219 A CN 200810021219A CN 100569410 C CN100569410 C CN 100569410C
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Abstract
本发明公开了一种液晶电视金属面框的加工工艺,包括依次进行的折弯边加工工序和四周圆角加工工序,其特征在于:所述折弯边加工工序中将中间开口的铝板固定在凹模板和固定板之间,其中凹模板的凹模型腔边缘增加有一圈挤入铝板中的压筋,进而通过凸模板挤压铝板内沿形成折弯边;所述四周圆角加工工序中,分别采用三对凸凹模镶块组件分三步对折弯边上四条直边连接处的四个圆角进行折弯冲压成型,并且这三对凸凹模镶块组件中的三个凸模镶块上的圆弧面半径依次递减。本发明能够冲压出圆角半径更小的折弯边以及折弯边上四条直边连接处的四个圆角,并且加工过程中可以有效防止四个圆角处断裂情况的发生,大大提高产品质量。
The invention discloses a processing technology for a metal surface frame of a liquid crystal television, which includes a bending edge processing process and a surrounding rounded corner processing process in sequence, and is characterized in that: in the bending edge processing process, an aluminum plate with an opening in the middle is fixed on the Between the concave formwork and the fixed plate, the edge of the concave mold cavity of the concave formwork is added with a circle of ribs extruded into the aluminum plate, and then the inner edge of the aluminum plate is extruded by the convex formwork to form a bending edge; in the rounded corner processing process, Three pairs of convex and concave mold insert assemblies are respectively used to bend and stamp the four rounded corners at the joints of the four straight sides on the bending edge in three steps, and the three convex and concave mold insert assemblies of the three pairs of convex and concave mold insert assemblies are The radius of the arc surface decreases in turn. The invention can punch out the bending edge with smaller fillet radius and the four rounded corners at the joints of the four straight edges on the bending edge, and can effectively prevent the occurrence of breakage at the four rounded corners during processing, greatly improving the product quality. quality.
Description
技术领域 technical field
本发明涉及一种液晶电视金属面框的加工工艺。The invention relates to a processing technique for a metal surface frame of a liquid crystal television.
背景技术 Background technique
现有铝合金液晶电视面框通常是由铝板冲压而成,如图1所示,其框体1的内沿上具有一圈向背侧弯折且圆角过渡的连贯的折弯边11,该折弯边11包括四条直边和位于四条直边连接处的四个圆角。由于在铝合金液晶电视面框的实际使用过程中,折弯边11的圆角半径R1,以及折弯边11上的四条直边连接处的四个圆角半径R2都是越小越美观,因此对于冲压工艺有很高的要求。The existing aluminum alloy LCD TV frame is usually stamped from an aluminum plate. As shown in FIG. The
目前的液晶电视金属面框的加工工艺包含下述两个常规工序:第一是折弯边加工工序,如图2、图3所示,即将中间开口的铝板2固定在冲压模具的凹模板3和固定板4之间,然后通过凸模板5挤压铝板2内沿形成折弯边11,从而也就使得折弯边11的圆角半径R1确定;第二是四周圆角加工工序,如图4所示,即采用四对凸凹模镶块组件冲压出折弯边上四条直边连接处的四个圆角,每对凸凹模镶嵌块组件由相契合的凸模镶块6和凹模镶块7组成,其中凸模镶块6上的圆弧面的圆角半径r即为所需要加工的圆角半径R2。The current processing technology of the metal surface frame of LCD TV includes the following two conventional processes: the first is the bending edge processing process, as shown in Figure 2 and Figure 3, that is, the
然而上述现有液晶电视金属面框的加工工艺在加工折弯边的工序中,冲压出来的折弯边11的圆角半径R1至少要大于铝板2本身的厚度H,因此几乎无法冲压出圆角半径R1较小的折弯边11;以厚度H=3mm的铝板为例,其折弯边圆角半径R1都要大于3mm,无法满足圆角半径R1小于1.5mm的合格要求。而在加工四周圆角的工序中,由于对于四个圆角的加工都是直接采用一对相契合的凸模镶块6和凹模镶块7来一次折弯冲压成型的,对于铝板2的冲击较大,使金属材料得不到有效的延展,不仅无法制作出半径R2较小的圆角(同样以厚度H=3mm的铝板为例,每个圆角的半径R2都只能做到大于4mm),而且圆角处容易断裂,直接影响到面框的外观,降低产品质量。However, in the above-mentioned processing technology of the metal surface frame of the liquid crystal TV, in the process of processing the bending edge, the fillet radius R1 of the punched
发明内容 Contents of the invention
本发明目的是:针对现有液晶电视金属面框的加工工艺的不足,提供一种液晶电视金属面框的加工工艺,能够冲压出圆角半径更小的折弯边以及折弯边上四条直边连接处的四个圆角,并且加工过程中可以有效防止四个圆角处断裂情况的发生,大大提高产品质量。The purpose of the present invention is to provide a processing technology for the metal surface frame of the LCD TV in view of the deficiency of the processing technology of the metal surface frame of the liquid crystal TV, which can stamp out the bending edge with a smaller fillet radius and four straight lines on the bending edge. The four rounded corners at the edge joints can effectively prevent the occurrence of breakage at the four rounded corners during processing, greatly improving product quality.
本发明的技术方案是:一种液晶电视金属面框的加工工艺,包括依次进行的折弯边加工工序和四周圆角加工工序,其特征在于:The technical solution of the present invention is: a processing technology for the metal surface frame of a liquid crystal TV, including the bending edge processing process and the surrounding rounded corner processing process, which are characterized in that:
所述折弯边加工工序中将中间开口的铝板固定在凹模板和固定板之间,其中凹模板的凹模型腔边缘增加有一圈挤入铝板中的压筋,进而通过凸模板挤压铝板内沿形成折弯边;In the bending edge processing process, the aluminum plate with the middle opening is fixed between the concave formwork and the fixed plate, wherein the edge of the concave mold cavity of the concave formwork is increased with a circle of bead squeezed into the aluminum plate, and then the aluminum plate is extruded through the convex formwork. along the edge forming the bend;
所述四周圆角加工工序中,分别采用三对凸凹模镶块组件分三步对折弯边上四条直边连接处的四个圆角进行折弯冲压成型,并且这三对凸凹模镶块组件中的三个凸模镶块上的圆弧面半径依次递减。In the rounded corner processing process, three pairs of convex and concave mold insert assemblies are used to bend and stamp the four rounded corners at the joints of the four straight sides on the bending edge in three steps, and the three pairs of convex and concave mold insert assemblies The radii of the arc surfaces on the three convex die inserts in the series decrease successively.
本发明的优点是:The advantages of the present invention are:
本发明的折弯边加工工序中,由于在凹模板的凹模型腔边缘增加有一圈挤入铝板中的压筋,这圈压筋在凸模板挤压铝板内沿的过程中将铝板材料挤向折弯部位,从而可以获得更小的折弯边圆角半径。以厚度3mm的铝板为例,其折弯边的圆角半径可以做到小于1.5mm。In the bending edge processing procedure of the present invention, since a circle of bead squeezed into the aluminum plate is added on the edge of the concave mold cavity of the concave formwork, this circle of bead will squeeze the aluminum plate material to Bend parts, so that a smaller bend edge fillet radius can be obtained. Taking an aluminum plate with a thickness of 3mm as an example, the fillet radius of the bent edge can be less than 1.5mm.
同时本发明的四周圆角加工工序中,由于分三步对折弯边上的四条直边连接处的四个圆角进行折弯冲压成型,并且每次冲压所得圆角半径依次递减,逐渐接近所需加工的圆角半径数值,相比现有的直接对四个圆角一次折弯冲压成型的方式,对于铝板的冲击要小的多,使金属材料得到了充分的延展,因此可以获得更小的圆角半径,以厚度3mm的铝板为例,每个圆角的半径能做到小于等于4mm;同时还有效的防止了圆角处断裂情况的发生,大大提高了产品质量。At the same time, in the rounded corner processing procedure of the present invention, because the four rounded corners at the joints of the four straight sides on the bent side are bent and punched in three steps, and the radius of the rounded corners obtained by each stamping decreases successively, gradually approaching the required rounded corners. The value of the fillet radius to be processed, compared with the existing method of directly bending and stamping the four fillets at one time, has a much smaller impact on the aluminum plate, so that the metal material is fully extended, so a smaller The radius of the fillet, taking an aluminum plate with a thickness of 3mm as an example, the radius of each fillet can be less than or equal to 4mm; at the same time, it can effectively prevent the occurrence of breakage at the fillet and greatly improve the product quality.
附图说明 Description of drawings
下面结合附图及实施例对本发明作进一步描述:The present invention will be further described below in conjunction with accompanying drawing and embodiment:
图1为铝合金液晶电视面框的成品结构示意图;Fig. 1 is a schematic diagram of the finished structure of an aluminum alloy liquid crystal TV frame;
图2为现有冲压工艺采用的冲压模具在冲压折弯边时的状态示意图;Fig. 2 is a schematic diagram of the state of the stamping die used in the existing stamping process when stamping and bending;
图3为图2的局部放大示意图;Figure 3 is a partial enlarged schematic view of Figure 2;
图4为现有冲压工艺采用的冲压模具在冲压四周圆角时的状态示意图;Fig. 4 is a schematic diagram of the state of the stamping die used in the existing stamping process when stamping rounded corners;
图5为本发明实施例所采用的冲压模具在冲压折弯边时的状态示意图;Fig. 5 is a schematic diagram of the state of the stamping die used in the embodiment of the present invention when stamping and bending;
图6为图5的局部放大示意图;Fig. 6 is a partially enlarged schematic diagram of Fig. 5;
图7为本发明实施例所采用的三对凸凹模镶块组件的结构示意图;Fig. 7 is a schematic structural view of three pairs of convex and concave mold insert assemblies used in the embodiment of the present invention;
其中:1、框体;11、折弯边;2、铝板;3、凹模板;31、凹模型腔;32、压筋;4、固定板;5、凸模板;6、凸模镶块;7、凹模镶块。Among them: 1. Frame body; 11. Bending edge; 2. Aluminum plate; 3. Concave formwork; 31. Concave mold cavity; 32. Beading; 4. Fixed plate; 5. Convex formwork; 7. Die insert.
具体实施方式 Detailed ways
实施例:结合图4、图5、图6和图7对本发明液晶电视金属面框的加工工艺的具体实施例作进一步说明,本实施例中,所加工的铝板2的厚度H为3mm。Embodiment: In conjunction with Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the specific embodiment of the processing technology of the liquid crystal TV metal face frame of the present invention is further described, in the present embodiment, the thickness H of the processed
本实施例液晶电视金属面框的加工工艺,包括依次进行的折弯边加工工序和四周圆角加工工序:The processing technology of the metal surface frame of the liquid crystal television in this embodiment includes the bending edge processing process and the rounded corner processing process carried out in sequence:
如图5、图6所示,所述折弯边加工工序中将中间开口的铝板2固定在凹模板3和固定板4之间,其中凹模板3的凹模型腔31边缘增加有一圈挤入铝板2中的压筋32,进而通过凸模板5挤压铝板2内沿形成折弯边11。本实施例由于压筋32在凸模板5挤压铝板2内沿的过程中将铝板材料挤向折弯部位,从而获得了更小的折弯边圆角半径R1,本实施例中该折弯边圆角半径R1=1.2mm。As shown in Figures 5 and 6, in the bending edge processing process, the
所述四周圆角加工工序中分别采用如图7所示的三对凸凹模镶块组件分三步对折弯边11上四条直边连接处的四个圆角进行折弯冲压成型。首先采用如图7中最左边的凸凹模镶块组件对四个圆角进行冲压成型,该凸凹模镶嵌块组件中的凸模镶块6上的圆弧面半径r1=12mm,相应的同凸模镶块6契合的凹模镶块7上的圆弧槽半径r4=15mm;其次采用如图7中位于中间的凸凹模镶块组件对四个圆角进行冲压成型,该凸凹模镶嵌块组件中的凸模镶块6上的圆弧面半径r2=7mm,相应的凹模镶块7上的圆弧槽半径r5=10mm;最后采用如图7中最右边的凸凹模镶块组件对四个圆角进行冲压成型,该凸凹模镶嵌块组件中的凸模镶块6上的圆弧面半径r3=4mm,相应的凹模镶块7上的圆弧槽半径r6=7mm。上述每一步中对于折弯边11上四条直边连接处的四个圆角的冲压成型状态与图4所示的现有技术相同。In the rounded corner processing process, three pairs of convex and concave mold insert assemblies as shown in FIG. 7 are used to bend and press the four rounded corners at the joints of the four straight sides on the
本实施例中由于分三步对折弯边11上的四条直边连接处的四个圆角进行冲压成型,并且每次冲压所得圆角半径依次递减,逐渐接近所需加工的圆角半径数值,相比现有的直接对四个圆角一次折弯冲压成型的方式,对于铝板2的冲击要小的多,使金属材料得到了充分的延展,因此可以获得更小的圆角半径R2,本实施例中最后加工完毕的四个圆角半径R2均为4mm;同时也有效的防止了圆角处断裂情况的发生,大大提高了产品质量。In this embodiment, the four rounded corners at the joints of the four straight sides on the
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CN103028662B (en) * | 2011-10-10 | 2016-01-13 | 靖江市永盛光电科技有限公司 | A kind of processing technology of LED backlight diel |
CN102962355A (en) * | 2012-11-17 | 2013-03-13 | 无锡爱博金属制品有限公司 | Beading forming die for automobile hinge fixing seat |
CN103286210A (en) * | 2013-06-04 | 2013-09-11 | 昆山电子羽电业制品有限公司 | Television front frame punching die |
CN110340231B (en) * | 2019-07-12 | 2020-09-29 | 中车长春轨道客车股份有限公司 | Flexible forming process and die for stainless steel metro vehicle window frame |
CN114226521A (en) * | 2021-12-14 | 2022-03-25 | 上海龙旗科技股份有限公司 | Device and method for machining right-angle structure of battery cover of electronic equipment |
CN117358828A (en) * | 2022-06-30 | 2024-01-09 | 荣耀终端有限公司 | Shell, manufacturing method thereof and terminal equipment |
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