CN103611865A

CN103611865A - Split closed structure for lower die of T iron forging and pressing die

Info

Publication number: CN103611865A
Application number: CN201310572286.6A
Authority: CN
Inventors: 冯宏志
Original assignee: Wuzhou Hengsheng Electronic Technology Co Ltd
Current assignee: Wuzhou Hengsheng Electronic Technology Co Ltd
Priority date: 2013-11-15
Filing date: 2013-11-15
Publication date: 2014-03-05

Abstract

The invention relates to the technical field of dies, and discloses a split closed structure for a lower die of a T iron forging and pressing die. The split closed structure for the lower die of the T iron forging and pressing die comprises the lower die, a lower die sleeve, a lower die prestressing sleeve and a lower bolster, wherein the lower die is arranged in the lower die sleeve; the lower die sleeve is arranged on the lower bolster; and the lower die sleeve and the lower bolster are arranged in the lower die prestressing sleeve. The lower die has the split closed structure of the prestressing sleeve, the prestressing sleeve has two layers, namely the lower die sleeve and the lower die prestressing sleeve, so that the impact force on the lower die in an impact process is absorbed by the lower die sleeve and the lower die prestressing sleeve, and the structural strength of the die can be strengthened quite conveniently; and moreover, by the mode of the split die, the lower die can be repaired conveniently, and quick-wear parts are changed conveniently. Compared with an integral die, the T iron forging and pressing die has high machining process performance.

Description

A kind of counterdie separate sealed structure of T iron forge die

Technical field

The present invention relates to technical field of mold, more particularly, particularly a kind of counterdie separate sealed structure of T iron forge die.

Background technology

Television set speaker multipass oblong-shaped, its plate rail, washer, magnet, also journey rectangle, or approximate track type of magnetic core (being T iron).As shown in Figure 1, processing method of the prior art is to take the lead (Fig. 1 a, Fig. 1 b), flatten (Fig. 1 c, Fig. 1 d), moulding (Fig. 1 e, Fig. 1 f) and circular trimming (the A place in Fig. 1 f adopts circular trimming), therefore, concerning the design of forge die, structure generally comprises upper die and lower die, in counterdie, be provided with the die of T shape, and the top of T shape die is circular.And for runway T iron in prior art, especially length-width ratio is greater than the track type T iron product of 2:1, adopt the technique of circular trimming, the shortcoming of its existence is: material cost is higher, stock utilization is low, has affected the effect of forging and stamping.The T iron forge die that need to seek new structure solves the problems referred to above.And in the T of new structure iron forge die structure, its general adopted lower die structure is integral structure, this in process of production, when the damage parts of counterdie, need to change a whole set of counterdie mould, greatly increased maintenance and replacement cost, and because the demand of T iron is large, the damage of the punch of patrix and replacing are comparatively frequent; Meanwhile, counterdie is owing to being subject to being subject to for a long time the percussion of patrix, and its structural strength is subject to larger impact; Therefore, be necessary that the lower die structure that designs a kind of novel T iron forge die solves above-mentioned technical problem.

Summary of the invention

The object of the present invention is to provide a kind of counterdie separate sealed structure that reduces the T iron forge die that maintenance and replacement cost and structural strength are large.

A kind of counterdie separate sealed structure of T iron forge die, comprise counterdie, it also comprises lower die-sleeve, counterdie Pre-stress cover and lower bolster, and described counterdie is installed in lower die-sleeve, described lower die-sleeve is located on lower bolster, and described lower die-sleeve and lower bolster are all located in counterdie Pre-stress cover.

Preferably, also comprise counterdie material returned thimble, described counterdie material returned thimble runs through described lower bolster and counterdie successively.

In order to achieve the above object, the technical solution used in the present invention is as follows:

Compared with prior art, the invention has the advantages that: counterdie of the present invention adopts Pre-stress cover separate sealed structure, adopt two-layer Pre-stress cover, be lower die-sleeve and counterdie Pre-stress cover, the impulsive force that counterdie is subject in impact process is absorbed by lower die-sleeve and counterdie Pre-stress cover, be very beneficial for strengthening the structural strength of mould; And Split type die mode, has facilitated the maintenance of counterdie and has been convenient to change consumable accessory, has better process industrial art performance with respect to monolithic mold.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the invention will be further described.

In Fig. 1, Fig. 1 a, Fig. 1 b, Fig. 1 c, Fig. 1 d, Fig. 1 e, Fig. 1 f are the artworks to the forging and stamping of T iron in prior art.

Fig. 2 is the structure chart of the counterdie separate sealed structure of T iron forge die of the present invention.

Fig. 3 is the top view of the counterdie separate sealed structure of T iron forge die of the present invention.

Fig. 4 is the cutaway view of the T iron forge die that forms of the counterdie separate sealed structure of T iron forge die of the present invention.

In Fig. 5, Fig. 5 a, Fig. 5 b, Fig. 5 c, Fig. 5 d, Fig. 5 e, Fig. 5 f are the artwork of the T iron forge die that forms of the counterdie separate sealed structure of T iron forge die of the present invention to the forging and stamping of T iron.

Fig. 6 is the structure chart of blank used in the T iron forge die that forms of the counterdie separate sealed structure of T iron forge die of the present invention.

Description of reference numerals: 1, upper padding plate, 2, upper lock plate, 3, upper solid plate, 4, patrix, 5, lower die-sleeve, 6, counterdie Pre-stress cover, 7, counterdie, 8, lower bolster, 9, counterdie material returned thimble, 10, T shape blank, 11, taper surface, 12, arc surface, 13, die cavity end, 14, die cavity neck, 15, blank, 16, tap hole.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.

Consult shown in Fig. 2, Fig. 3, the counterdie separate sealed structure of a kind of T iron forge die provided by the invention, comprise counterdie 7, it also comprises lower die-sleeve 5, counterdie Pre-stress cover 6 and lower bolster 8, described counterdie 7 is installed in lower die-sleeve 5, described lower die-sleeve 5 is located on lower bolster 8, and described lower die-sleeve 5 and lower bolster 8 are all located in counterdie Pre-stress cover 6.And the present invention also comprises counterdie material returned thimble 9, described counterdie material returned thimble 9 runs through described lower bolster 8 and counterdie 7 successively, for product being ejected to counterdie 7 after forging forming.Because the present invention adopts Pre-stress cover separate sealed structure by counterdie 7, adopt two-layer Pre-stress cover, be lower die-sleeve 5 and counterdie Pre-stress cover 6, the impulsive force that counterdie is subject in impact process is absorbed by lower die-sleeve 5 and counterdie Pre-stress cover 6, be very beneficial for strengthening the structural strength of mould; And Split type die mode, has facilitated the maintenance of counterdie and has been convenient to change consumable accessory, has better process industrial art performance with respect to monolithic mold.

Consult shown in Fig. 4, its T iron forge die for adopting the split type insert structure of patrix of the present invention to form, this mould comprises patrix 4 and the counterdie 7 of mutual correspondence, this mould is for forging and pressing the blank 15 being installed between patrix 4 and counterdie 7, counterdie 7 is provided with a T shape die cavity, this T shape die cavity comprises die cavity end 13 and die cavity neck 14, and the lower surface of die cavity end 13 is taper surface 12, and the two sides of die cavity end 13 are the arc surface 12 of indent.

On the mounting structure of patrix 4, also comprise upper padding plate 1, upper lock plate 2 and upper solid plate 3, patrix 4 is fixedly installed in the lower end of upper lock plate 2, upper lock plate 2 is embedded in solid plate 3, the upper surface of upper plate 3 admittedly with the upper upper surface of consolidating plate 3 in same plane, the upper surface of upper lock plate 2 and upper solid plate 3 are all fixedly installed in the lower surface of upper padding plate 1, are about to patrix 4 and adopt split type insert structure, can greatly reduce the maintenance cost of mould and be convenient to change consumable accessory.

Consult shown in Fig. 6, concrete, be located at and on the blank 15 between patrix 4 and counterdie 7, be also provided with tap hole 16 identical or contrary with the flow direction of material in forging and stamping process; The design of tap hole 16 can make material unnecessary in cold forging process realize shunting, guaranteed on the one hand the pressure stability in shape chamber in cold forging, further improved product dimensional accuracy with the service life that has extended mould, reduced on the other hand the consume of material, also omitted simultaneously and after cold closed-die forging, needed the magnetic core of blank and plate face to carry out mach operation, greatly improve production efficiency, there is very high economic benefit.And, select the shape of tap hole 16 can elect circle or other shapes as.

The T iron forge die that lower mask body introduction adopts Deform3D software simulation counterdie separate sealed of the present invention structure to form is applied in the embodiment in the forging and stamping of T iron.

The T iron product of required processing be shaped as rectangle.Length-width ratio 2.5:1,30 grams of net weight.If by old technology (take the lead, flattening, moulding, circular trimming), expendable weight is 53 grams.Stock utilization only 56.6%, spillage of material is serious, and ratio of height to diameter is larger.And adopt conventional T iron forging process mode to be difficult to realize.

And first the T iron forge die that adopts counterdie separate sealed structure of the present invention to form has painted blank and the mould entity of 3D from POR/E, be saved in TSL form.Then, import Deform3D software, the grid that application system generates automatically, then geometrical model and primary condition are set, blank is made as 10# boiling steel, and mould is made as rigid body, and coefficient of friction is 0.13, patrix translational speed is 220MM/S, adopts cold forging mode to forge, and does not consider thermal coupling in process.Whole simulation process is: the blank of taking the lead, flattening (can be several times, carry out as 3 times), form T shape blank 10, according to the 5a in Fig. 5, Fig. 5 b, Fig. 5 c, Fig. 5 d, Fig. 5 e, Fig. 5 f process is processed, making the inner portion face of the T shape blank 10 after flattening is a taper surface, and the head two sides arc surface that is indent, wherein the cone angle of taper surface and the radius of arc surface can be selected according to actual product, selected standard is deflection and the mobility that guarantees to guarantee on the one hand material, to prevent from forming to walk to expect dead band, avoid on the other hand the destruction of the mould that causes because pressure is excessive.Finally, actual forging and stamping and the consistent forging and stamping that completed T iron product of the assurance of simulating in Deform3D software.Fig. 5 c and Fig. 5 d from Fig. 5 can find out, adopt the T iron forge die of counterdie separate sealed structure composition of the present invention to save a large amount of materials than old technology, and reduce the waste material amount of trimming.

Although described by reference to the accompanying drawings embodiments of the present invention; but the patent owner can make various distortion or modification within the scope of the appended claims; as long as be no more than the described protection domain of claim of the present invention, all should be within protection scope of the present invention.

Claims

1. the counterdie separate sealed structure of a T iron forge die, comprise counterdie (7), it is characterized in that: also comprise lower die-sleeve (5), counterdie Pre-stress cover (6) and lower bolster (8), described counterdie (7) is installed in lower die-sleeve (5), it is upper that described lower die-sleeve (5) is located at lower bolster (8), and described lower die-sleeve (5) and lower bolster (8) are all located in counterdie Pre-stress cover (6).

2. the counterdie separate sealed structure of T iron forge die according to claim 1, is characterized in that: also comprise counterdie material returned thimble (9), described counterdie material returned thimble (9) runs through described lower bolster (8) and counterdie (7) successively.