CN100569410C - The processing technology of liquid crystal television metal frame - Google Patents

The processing technology of liquid crystal television metal frame Download PDF

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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
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China
Prior art keywords
punch
bending edges
die
insert
manufacturing procedure
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CN101332483A (en
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高玉根
刘锦彪
谭传章
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Suzhou Victory Precision Manufacture Co Ltd
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Suzhou Victory Precision Manufacture Co Ltd
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Abstract

The invention discloses a kind of processing technology of liquid crystal television metal frame, comprise the bending edges manufacturing procedure of carrying out successively and fillet manufacturing procedure all around, it is characterized in that: the aluminium sheet with middle opening in the described bending edges manufacturing procedure is fixed between concave template and the fixed head, wherein the concave die cavity edge increase of concave template has one to enclose the beading of clamp-oning in the aluminium sheet, and then forms bending edges by edge in the convex template extrusion aluminum board; In the described fillet manufacturing procedure all around, adopt three pairs of punch-die insert block groupwares to divide three four fillets that go on foot four straight flange junctions on the bending edges to carry out the bending punch forming respectively, and the arc surface radius on three punch inserts in these three pairs of punch-die insert block groupwares successively decrease successively.The present invention can stamp out four fillets of four straight flange junctions on littler bending edges of radius of corner and the bending edges, and can effectively prevent the generation of four fillet place crack conditions in the process, improves the quality of products greatly.

Description

The processing technology of liquid crystal television metal frame
Technical field
The present invention relates to a kind of processing technology of liquid crystal television metal frame.
Background technology
Existing aluminium alloy liquid crystal TV face frame normally is stamped to form by aluminium sheet, as shown in Figure 1, its framework 1 interior along on have the support or oppose bending edges 11 that links up of lateral buckling and round-corner transition of a circle, this bending edges 11 comprises four straight flanges and is positioned at four fillets of four straight flange junctions.Because in the actual use of aluminium alloy liquid crystal TV face frame, the radius of corner R1 of bending edges 11, and four radius of corner R2 of four straight flange junctions on the bending edges 11 are more little attractive in appearance more, therefore for Sheet Metal Forming Technology very high requirement are arranged.
The processing technology of present liquid crystal television metal frame comprises following two conventional operations: the firstth, and the bending edges manufacturing procedure, as Fig. 2, shown in Figure 3, the aluminium sheet 2 that is about to middle opening is fixed between the concave template 3 and fixed head 4 of diel, form bending edges 11 by edge in convex template 5 extrusion aluminum boards 2 then, thereby also just make the radius of corner R1 of bending edges 11 determine; The secondth, around the fillet manufacturing procedure, as shown in Figure 4, promptly adopt four pairs of punch-die insert block groupwares to stamp out four fillets of four straight flange junctions on the bending edges, every pair of punch-die mosaic block assembly is made up of punch insert 6 that agrees with mutually and die plate insert 7, and wherein the radius of corner r of the arc surface on the punch insert 6 is the radius of corner R2 of required processing.
Yet the processing technology of above-mentioned available liquid crystal TV metal frame is in the operation of processing bending edges, the radius of corner R1 of the bending edges 11 that punching press is come out is greater than the thickness H of aluminium sheet 2 itself at least, therefore almost can't stamp out the less bending edges of radius of corner R1 11; Aluminium sheet with thickness H=3mm is an example, and its bending edges radius of corner R1 is greater than 3mm, can't satisfy the qualified requirement of radius of corner R1 less than 1.5mm.And around processing in the operation of fillet, because the processing for four fillets all is directly to adopt a pair of punch insert that agrees with mutually 6 and die plate insert 7 to come a bending stamping forming, impact for aluminium sheet 2 is bigger, make metal material can not get effective extension, (aluminium sheet with thickness H=3mm is an example equally not only can't to produce radius R 2 less fillets, the radius R 2 of each fillet all can only be accomplished greater than 4mm), and rupture easily in the fillet place, directly have influence on the outward appearance of face frame, reduce product quality.
Summary of the invention
The present invention seeks to: at the deficiency of the processing technology of available liquid crystal TV metal frame, a kind of processing technology of liquid crystal television metal frame is provided, can stamp out four fillets of four straight flange junctions on littler bending edges of radius of corner and the bending edges, and can effectively prevent the generation of four fillet place crack conditions in the process, improve the quality of products greatly.
Technical scheme of the present invention is: a kind of processing technology of liquid crystal television metal frame, comprise the bending edges manufacturing procedure of carrying out successively and fillet manufacturing procedure all around, and it is characterized in that:
Aluminium sheet with middle opening in the described bending edges manufacturing procedure is fixed between concave template and the fixed head, and wherein the concave die cavity edge increase of concave template has one to enclose the beading of clamp-oning in the aluminium sheet, and then forms bending edges by edge in the convex template extrusion aluminum board;
In the described fillet manufacturing procedure all around, adopt three pairs of punch-die insert block groupwares to divide three four fillets that go on foot four straight flange junctions on the bending edges to carry out the bending punch forming respectively, and the arc surface radius on three punch inserts in these three pairs of punch-die insert block groupwares successively decrease successively.
Advantage of the present invention is:
In the bending edges manufacturing procedure of the present invention, because the concave die cavity edge increase at concave template has one to enclose the beading of clamp-oning in the aluminium sheet, in the process on this circle beading edge in the convex template extrusion aluminum board aluminium sheet material is pressed to the bending part, thereby can obtain littler bending edges radius of corner.Aluminium sheet with thickness 3mm is an example, and the radius of corner of its bending edges can be accomplished less than 1.5mm.
In the fillet manufacturing procedure all around simultaneously of the present invention, owing to divide three four fillets that go on foot four straight flange junctions on the bending edges to carry out the bending punch forming, and each punching press gained radius of corner is successively decreased successively, move closer to the radius of corner numerical value of required processing, compare existing directly to stamping forming mode of bending of four fillets, impact for aluminium sheet is much smaller, make metal material obtain sufficient extension, therefore can obtain littler radius of corner, aluminium sheet with thickness 3mm is an example, and the radius of each fillet can be accomplished smaller or equal to 4mm; Also effectively prevent the generation of fillet place crack conditions simultaneously, improved product quality greatly.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described:
Fig. 1 is the finished product structural representation of aluminium alloy liquid crystal TV face frame;
The view of diel when the pressing and bending limit that Fig. 2 adopts for existing Sheet Metal Forming Technology;
Fig. 3 is the local enlarged diagram of Fig. 2;
The diel that Fig. 4 adopts for existing Sheet Metal Forming Technology is the view during fillet around punching press;
Fig. 5 is the view of diel when the pressing and bending limit that the embodiment of the invention adopted;
Fig. 6 is the local enlarged diagram of Fig. 5;
Fig. 7 is the structural representation of three pairs of punch-die insert block groupwares that the embodiment of the invention adopted;
Wherein: 1, framework; 11, bending edges; 2, aluminium sheet; 3, concave template; 31, concave die cavity; 32, beading; 4, fixed head; 5, convex template; 6, punch insert; 7, die plate insert.
The specific embodiment
Embodiment: in conjunction with Fig. 4, Fig. 5, Fig. 6 and Fig. 7 the specific embodiment of the processing technology of liquid crystal television metal frame of the present invention is described further, in the present embodiment, the thickness H of the aluminium sheet of being processed 2 is 3mm.
The processing technology of present embodiment liquid crystal television metal frame comprises the bending edges manufacturing procedure of carrying out successively and fillet manufacturing procedure all around:
As Fig. 5, shown in Figure 6, aluminium sheet 2 with middle opening in the described bending edges manufacturing procedure is fixed between concave template 3 and the fixed head 4, wherein the concave die cavity 31 edge increases of concave template 3 have one to enclose the beading of clamp-oning in the aluminium sheet 2 32, and then form bending edges 11 by edge in convex template 5 extrusion aluminum boards 2.Present embodiment presses to the bending part owing in the process on beading 32 edge in convex template 5 extrusion aluminum boards 2 with the aluminium sheet material, thereby has obtained littler bending edges radius of corner R1, this bending edges radius of corner R1=1.2mm in the present embodiment.
Adopt three pairs of punch-die insert block groupwares as shown in Figure 7 to divide three four fillets that go on foot four straight flange junctions on the bending edges 11 to carry out the bending punch forming around described in the fillet manufacturing procedure respectively.At first adopt and four fillets are carried out punch forming as leftmost punch-die insert block groupware among Fig. 7, arc surface radius r 1=12mm on the punch insert 6 in this punch-die mosaic block assembly, accordingly the arc groove radius r 4=15mm on the die plate insert 7 that agrees with punch insert 6; Secondly adopt as the punch-die insert block groupware in the middle of being positioned among Fig. 7 four fillets are carried out punch forming, the arc surface radius r 2=7mm on the punch insert 6 in this punch-die mosaic block assembly, the arc groove radius r 5=10mm on the corresponding die plate insert 7; Adopt at last and four fillets are carried out punch forming, the arc surface radius r 3=4mm on the punch insert 6 in this punch-die mosaic block assembly, the arc groove radius r 6=7mm on the corresponding die plate insert 7 as rightmost punch-die insert block groupware among Fig. 7.Punch forming state for four fillets of four straight flange junctions on the bending edges 11 in above-mentioned each step is identical with prior art shown in Figure 4.
Four fillets that go on foot four straight flange junctions on the bending edges 11 owing to branch three in the present embodiment carry out punch forming, and each punching press gained radius of corner is successively decreased successively, move closer to the radius of corner numerical value of required processing, compare existing directly to stamping forming mode of bending of four fillets, impact for aluminium sheet 2 is much smaller, make metal material obtain sufficient extension, therefore can obtain littler radius of corner R2, four radius of corner R2 of last completion of processing are 4mm in the present embodiment; Also effectively prevent simultaneously the generation of fillet place crack conditions, improved product quality greatly.

Claims (1)

1. the processing technology of a liquid crystal television metal frame comprises the bending edges manufacturing procedure of carrying out successively and fillet manufacturing procedure all around; It is characterized in that:
Aluminium sheet (2) with middle opening in the described bending edges manufacturing procedure is fixed between concave template (3) and the fixed head (4), wherein concave die cavity (31) the edge increase of concave template (3) has one to enclose the beading of clamp-oning in the aluminium sheet (2) (32), and then forms bending edges (11) by edge in convex template (5) extrusion aluminum board (2);
In the described fillet manufacturing procedure all around, adopt three pairs of punch-die insert block groupwares to divide three four fillets that go on foot last four the straight flange junctions of bending edges (11) to carry out the bending punch forming respectively, and the arc surface radius (r1, r2, r3) on three punch inserts (6) in these three pairs of punch-die insert block groupwares successively decrease successively;
At first adopt big punch-die insert block groupware that four fillets are carried out punch forming, arc surface radius r 1=12mm on the punch insert (6) in this punch-die mosaic block assembly, the arc groove radius r 4=15mm on the die plate insert (7) that corresponding same punch insert (6) agrees with;
Next adopts convexity die plate insert assembly that four fillets are carried out punch forming, the arc surface radius r 2=7mm on the punch insert (6) in this punch-die mosaic block assembly, the arc groove radius r 5=10mm on the corresponding die plate insert (7);
Adopt little punch-die insert block groupware that four fillets are carried out punch forming at last, the arc surface radius r 3=4mm on the punch insert (6) in this punch-die mosaic block assembly, the arc groove radius r 6=7mm on the corresponding die plate insert (7).
CNB2008100212194A 2008-07-22 2008-07-22 The processing technology of liquid crystal television metal frame Active CN100569410C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2008100212194A CN100569410C (en) 2008-07-22 2008-07-22 The processing technology of liquid crystal television metal frame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2008100212194A CN100569410C (en) 2008-07-22 2008-07-22 The processing technology of liquid crystal television metal frame

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

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* 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

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