CN100569410C - Processing technology of metal frame of LCD TV - Google Patents

Processing technology of metal frame of LCD TV Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
convex
mold insert
concave
concave mold
edge
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.)
Active
Application number
CNB2008100212194A
Other languages
Chinese (zh)
Other versions
CN101332483A (en
Inventor
高玉根
刘锦彪
谭传章
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.)
Suzhou Victory Precision Manufacture Co Ltd
Original Assignee
Suzhou Victory Precision Manufacture Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suzhou Victory Precision Manufacture Co Ltd filed Critical Suzhou Victory Precision Manufacture Co Ltd
Priority to CNB2008100212194A priority Critical patent/CN100569410C/en
Publication of CN101332483A publication Critical patent/CN101332483A/en
Application granted granted Critical
Publication of CN100569410C publication Critical patent/CN100569410C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)

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

液晶电视金属面框的加工工艺 Processing technology of metal frame of LCD TV

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 bent side 11 includes four straight sides and four rounded corners at the joints of the four straight sides. Because in the actual use of the aluminum alloy LCD TV frame, the smaller the radius R1 of the corners of the bent edge 11 and the radius R2 of the four corners connected to the four straight sides on the bent edge 11, the more beautiful they are. Therefore, there are high requirements for the stamping process.

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 aluminum plate 2 with the middle opening is fixed on the concave template 3 of the stamping die and the fixed plate 4, then extrude the inner edge of the aluminum plate 2 through the convex plate 5 to form the bent edge 11, so that the fillet radius R1 of the bent edge 11 is determined; the second is the rounded corner processing process, as shown in the figure As shown in 4, four pairs of convex and concave mold insert components are used to stamp out four rounded corners at the joints of the four straight sides on the bending edge, and each pair of convex and concave mold insert components is composed of a matching convex mold insert 6 and a concave mold insert. Block 7, wherein the fillet radius r of the arc surface on the punch insert 6 is the fillet radius R2 to be processed.

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 bent edge 11 must be at least greater than the thickness H of the aluminum plate 2 itself, so it is almost impossible to punch out the fillet The bending edge 11 with a smaller radius R1; taking an aluminum plate with a thickness of H=3mm as an example, the corner radius R1 of the bending edge must be greater than 3mm, which cannot meet the qualified requirement that the radius R1 of the corner radius R1 is less than 1.5mm. In the process of processing the rounded corners around, since the processing of the four rounded corners is directly formed by a pair of matching convex mold inserts 6 and concave mold inserts 7, the aluminum plate 2 The impact is large, so that the metal material cannot be effectively extended, not only can not make a fillet with a small radius R2 (similarly taking an aluminum plate with a thickness of H=3mm as an example, the radius R2 of each fillet can only be greater than 4mm), and the rounded corners are easy to break, which directly affects the appearance of the surface frame and reduces the product quality.

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 aluminum plate 2 is 3mm.

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 aluminum plate 2 with the middle opening is fixed between the concave formwork 3 and the fixed plate 4, wherein the edge of the concave mold cavity 31 of the concave formwork 3 is added with a circle of extrusion The bead 32 in the aluminum plate 2 is further extruded by the convex plate 5 to form the bent edge 11 on the inner edge of the aluminum plate 2 . In this embodiment, because the bead 32 squeezes the aluminum plate material to the bending part during the process of the convex plate 5 extruding the inner edge of the aluminum plate 2, a smaller bending edge fillet radius R1 is obtained. In this embodiment, the bending Edge fillet radius R1 = 1.2mm.

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 bending edge 11 in three steps. First, the four rounded corners are stamped and formed by using the leftmost convex and concave mold insert assembly as shown in Figure 7. The radius r1 of the arc surface on the convex mold insert 6 in the convex and concave mold inlay block assembly is r1=12mm, and the corresponding convex The arc groove radius r4=15mm on the concave mold insert 7 that the mold insert 6 fits; secondly, the four rounded corners are stamped and formed by using the convex-concave mold insert assembly in the middle as shown in Figure 7, and the convex-concave mold insert assembly The arc surface radius r2=7mm on the punch insert 6, the arc groove radius r5=10mm on the corresponding die insert 7; finally adopt the rightmost convex and concave mold insert assembly as shown in Figure 7 for four The rounded corners are punched and formed, the arc surface radius r3=4mm on the punch insert 6 in the punch and die insert block assembly, and the arc groove radius r6=7mm on the corresponding die insert 7. In each step above, the stamping and forming state of the four rounded corners at the joints of the four straight sides on the bending side 11 is the same as that of the prior art shown in FIG. 4 .

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 bending edge 11 are stamped and formed in three steps, and the radius of the rounded corners obtained by stamping each time decreases successively, gradually approaching the value of the rounded corner radius to be processed. Compared with the existing method of directly bending and stamping the four rounded corners at one time, the impact on the aluminum plate 2 is much smaller, and the metal material is fully extended, so a smaller rounded corner radius R2 can be obtained. In the embodiment, the radii R2 of the four rounded corners that are finally processed are all 4mm; at the same time, the occurrence of breakage at the rounded corners is effectively prevented, and the product quality is greatly improved.

Claims (1)

1.一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:1. A processing technology for a metal face frame of a liquid crystal television, comprising a bending edge processing operation and a rounded corner processing operation carried out successively; it is characterized in that: 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);In the bending edge processing process, the aluminum plate (2) with the middle opening is fixed between the concave template (3) and the fixed plate (4), wherein a circle of extrusion is added to the edge of the concave mold cavity (31) of the concave template (3). Insert the bead (32) in the aluminum plate (2), and then extrude the inner edge of the aluminum plate (2) through the convex plate (5) to form the bent edge (11); 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(11)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(6)上的圆弧面半径(r1、r2、r3)依次递减;In the rounded corner processing process, three pairs of convex and concave mold insert assemblies are used to bend and press the four rounded corners at the joints of the four straight sides on the bent edge (11) in three steps, and the three pairs of convex and concave molds The arc surface radii (r1, r2, r3) on the three punch inserts (6) in the insert assembly decrease successively; 首先采用大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;At first, the four rounded corners are stamped and formed by using a large convex and concave mold insert assembly. The arc surface radius r1=12mm on the convex mold insert (6) in the convex and concave mold insert assembly is correspondingly the same as that of the convex mold insert (6). 6) The arc groove radius r4=15mm on the fitted die insert (7); 其次采用中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;Secondly, the four rounded corners are stamped and formed by using the middle convex and concave mold insert assembly. The arc surface radius r2=7mm on the convex mold insert (6) in the convex and concave mold insert assembly, the corresponding concave mold insert (7 ) on the arc groove radius r5 = 10mm; 最后采用小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。Finally, the four rounded corners are punched and formed by using the small convex and concave mold insert assembly. The arc surface radius r3=4mm on the convex mold insert (6) in the convex and concave mold insert assembly, the corresponding concave mold insert (7 ) on the arc groove radius r6 = 7mm.
CNB2008100212194A 2008-07-22 2008-07-22 Processing technology of metal frame of LCD TV Active CN100569410C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2008100212194A CN100569410C (en) 2008-07-22 2008-07-22 Processing technology of metal frame of LCD TV

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2008100212194A CN100569410C (en) 2008-07-22 2008-07-22 Processing technology of metal frame of LCD TV

Publications (2)

Publication Number Publication Date
CN101332483A CN101332483A (en) 2008-12-31
CN100569410C true CN100569410C (en) 2009-12-16

Family

ID=40195510

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2008100212194A Active CN100569410C (en) 2008-07-22 2008-07-22 Processing technology of metal frame of LCD TV

Country Status (1)

Country Link
CN (1) CN100569410C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
CN101332483A (en) 2008-12-31

Similar Documents

Publication Publication Date Title
CN100569410C (en) Processing technology of metal frame of LCD TV
CN108115369B (en) Mobile phone middle frame processing technology
CN101437373B (en) Metal shell forming method
CN107199287A (en) The manufacture method and particular manufacturing craft of a kind of phone housing
CN105921598B (en) A kind of fine-punching formation method that angle of collapsing is reduced or eliminated
CN102581126B (en) Stamping die and stamping method suitable for circular convex hull of flat panel display backplane
CN105268865B (en) The design method of the die face in vehicle exterior cladding element characteristic curve region
CN103600005B (en) A kind of processing molding method of rocker stand
CN106550579A (en) The framework and its manufacture method of mobile communication terminal
CN108296710B (en) Mobile phone middle frame processing technology
CN102728645A (en) Extrusion forming die and method for large length-width ratio aluminum alloy rectangular box-shaped part
CN102921755A (en) Right angle extrusion processing method and right angle extrusion processing mould
CN101309381A (en) A sheet metal screen frame of a rear-projection TV set and its manufacturing method
CN206925216U (en) A kind of secondary stamping and blanking mould
CN110270654A (en) Metal laptop case pier extruding mold and the moulding process for using pier extruding mold
KR102407180B1 (en) Manufacture process for metal case of mobile phone
CN108515100A (en) Kato sheet metal regional ironed method and made of this method
CN208542867U (en) A kind of metal edge frame apparatus for bending produced and used for LCD TV
CN108817227A (en) A kind of punching press bump structure and mold and forming method
CN105921615B (en) A kind of large-scale tv machine backboard molding die
CN107530841A (en) The processing method and mould of housing with lateral projections
CN207283632U (en) Titanium alloy mobile phone shell blank
CN105817533A (en) Arc-shaped backboard raising forming die
CN202517649U (en) An in-mold stainless steel insert structure
CN211101111U (en) Trapezoidal three-dimensional stretch forming die

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant