CN204338857U - Wire drawing die mould - Google Patents

Abstract

The utility model discloses a kind of wire drawing die mould, comprise die body, upper punch and low punch, described die body comprises the collar with the level and carbide ring cylinder, described upper punch comprises round handle and carbide alloy core bar, described low punch comprises base and the hard alloy punch head that bottom surrounding is provided with outer chamfering, described carbide ring cylinder is embedded in the collar, stepped hole is had in this carbide ring cylinder, described carbide alloy core bar is arranged on bottom round handle, described hard alloy punch head is arranged on base top and inserts in stepped hole, described base has core bore, hard alloy punch head has the relief hole be communicated with core bore, described carbide alloy core bar moves down compaction of powders body in insertion stepped hole by justifying handle driving, upper punch is driven at the uniform velocity to move down together with die body, control the body of powder in carbide alloy core bar and the two-way compacting stepped hole of hard alloy punch head move toward one another.The utility model machining accuracy is high, good rigidly, and wearability is good.

Description

Wire drawing die mould

Technical field

The utility model belongs to field of powder metallurgy, particularly relates to a kind of wire drawing die mould of carbide alloy micropore.

Background technology

There is the hole of individual definite shape at the center of wire drawing die, circle, side, anise or other special shape, and metal is hauled to diminish through size during nib, and even shape all changes.Punching block is used for soft metal (as gold and silver) drawing, punching block can have the hole of multiple different pore size.The general sintered-carbide die that adopts of drawn wire (or claiming steel wire) draws, the typical structure of this mould is that the carbide alloy core rod of cylindrical (or slightly tapering) is closely embedded in a circular steel bushing, has horn mouth, approach cone, distortion (work) cone, calibrating strap and the angle of outlet in core rod endoporus.Core rod endoporus pass determines shape wiry.Non ferrous wire, as making also more employing and the similar wire drawing die of steel wire die of copper, aluminium, some difference of internal via shape, drawing-down line can use glomerocryst mould (rhinestone), uses the wire drawing die of rough diamond in addition.

Current China has been automobile production the biggest in the world and selling market, and corresponding tire demand is also increasing, and the steel cord required by high-grade tire production is more and more thinner, and steel strength is more and more higher, makes the difficulty making steel cord more and more higher.The making of present steel cord is generally all realized by the drawing of micropore wire drawing die.

But along with more and more higher to requirement wiry, wire drawing die common at present can not meet requirement, especially for the tinsel of diameter at below 0.1mm, it is very difficult that wire-drawing die makes, this is mainly because the hole in the middle of wire drawing die requires too thin, and the axiality between core rod and axle sleeve is difficult to ensure, therefore in use easily occurs the race silk of tinsel, cause product failure, suddenly need to be improved.The decisive influence factor of the axiality of micropore die core of wire-drawing die is determined by the overall offset amount of compacting tool set, and therefore, the compressing system of high rigidity is the important leverage ensureing micropore wire drawing die product quality.

The patent No. is that the Chinese patent of ZL201210416512 discloses a kind of micropore wire drawing die preparation method and makes mould, although it adopts two-way pressing process, the mould of speciality is utilized to suppress semi-finished product, but what it adopted be still core bar under the pressing process of (namely horn mouth down), overall compressing system rigidity is inadequate, the more difficult control of product axiality.

Therefore how High-efficient Production micropore wire drawing die, and ensure to make product higher precision, fineness and axiality, be still a problem merited attention.

Utility model content

The purpose of this utility model is to provide a kind of two-way compacting can carrying out micropore wire drawing die, and realize the production on mo(u)ldenpress, production efficiency is high, the wire drawing die mould that the precision of product, fineness and axiality are good.

This wire drawing die mould that the utility model provides, comprise die body, the low punch being positioned at the upper punch above die body and being positioned at below die body, described die body comprises the collar with the level and carbide ring cylinder, described upper punch comprises round handle and carbide alloy core bar, described low punch comprises base and the hard alloy punch head that bottom surrounding is provided with outer chamfering, described carbide ring cylinder is embedded in the collar, stepped hole is had in this carbide ring cylinder, described carbide alloy core bar is arranged on bottom round handle, described hard alloy punch head is arranged on base top and inserts in stepped hole, described base has core bore, hard alloy punch head has the relief hole be communicated with core bore.

For ensureing axiality of the present utility model and precision better, described carbide ring cylinder, carbide alloy core bar and hard alloy punch head all adopt the carbide alloy of HRA more than 88 to make.

For ensureing the high and not frangibility of carbide alloy core bar precision of the present utility model, described carbide alloy core bar by skive milling processing and polishing make.

For making machining accuracy of the present utility model high and production cost is low, good rigidity, described carbide alloy core bar by welded and installed bottom circle handle, described hard alloy punch head by welded and installed in base top.

After suppressing for making the utility model, semifinished product precision is high, intensity good, and the core bore on described base and outer chamfering adopt once molding formed.

For making Mold Making cost of the present utility model low, ensure that wearability is well combined with overall toughness, the described collar, circle handle and base all adopt steel.

The utility model is suppressed at upper i.e. horn mouth pressing mode upward by adopting core bar, can increase the service life of core bar; Adopt carbide alloy to make core bar compaction of powders body, moved up by hard alloy punch head and to make core two-way compacting simultaneously with carbide alloy, the pressed compact of the upper and lower even density of disposable acquisition.The utility model machining accuracy is high, good rigidly, and wearability is good, and service life is more existing improves 5 ~ 10 times, and can apply on TPA press, realize the full-automatic compacting of wire drawing die, production efficiency is high.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the utility model die body structural representation.

Fig. 3 is the utility model upper punch structural representation.

Fig. 4 is the utility model low punch structural representation.

Fig. 5 is structure for amplifying schematic diagram in the circle index line of Fig. 4 top.

Detailed description of the invention

As can be seen from Fig. 1 to Fig. 5, this wire drawing die mould of the utility model, comprise die body 1, upper punch 2 and low punch 3, upper punch 2 is positioned at above die body 1, low punch 3 is positioned at below die body 1, wherein die body 1 comprises the collar 11 with the level and carbide ring cylinder 12, carbide ring cylinder 12 is embedded in the collar 11, stepped hole 121 is had in this carbide ring cylinder 12, upper punch 2 comprises round handle 21 and carbide alloy core bar 22, carbide alloy core bar 22 is arranged on bottom round handle 21, the base 31 that low punch 3 comprises and hard alloy punch head 32, outer chamfering 311 is provided with in the bottom surrounding of base 31, this base 31 has core bore 312, hard alloy punch head 32 has the relief hole 321 be communicated with core bore 312, this hard alloy punch head 32 is arranged on base 31 top and inserts in stepped hole 121, carbide alloy core bar 22 is driven to move down by circle handle 21 and inserts compaction of powders body in stepped hole 121, upper punch 2 is driven at the uniform velocity to move down together with die body 1, control carbide alloy core bar 22 and the body of powder in the two-way compacting stepped hole 121 of hard alloy punch head 32 move toward one another.

In the utility model, the collar 11, circle handle 21 and base 31 all adopt steel, and carbide ring cylinder 12, carbide alloy core bar 22 and hard alloy punch head 32 all adopt the carbide alloy of HRA more than 88 to make,

Carbide alloy core bar 22 by skive milling processing and polishing make and by welded and installed circle handle 21 bottom, the outer chamfering 311 on base 31 and core bore 312 adopt once molding formed, hard alloy punch head 32 by welded and installed at base 31 top.

Use procedure of the present utility model is as follows:

1, die body 1, upper punch 2 and low punch 3 are arranged on TPA press respectively in the localities corresponding.

2, die body 1 is sleeved on low punch 3, hard alloy punch head 32 is inserted in stepped hole 121.

3, in stepped hole 121, cemented carbide powder is loaded.

4, the round handle 21 controlling upper punch 2 moves down, and drives the carbide alloy core bar 22 bottom it to move down together and inserts extruding cemented carbide powder in stepped hole 121.

5, control upper punch 2 at the uniform velocity downward together with die body 1, make carbide alloy core bar 22 coordinate move toward one another with the hard alloy punch head 32 be fixed on TPA press, thus realize the two-way compacting of floating die mode, the pressed compact of the upper and lower even density of disposable acquisition.

Claims (7)

1. a wire drawing die mould, comprise die body, the low punch being positioned at the upper punch above die body and being positioned at below die body, it is characterized in that: described die body comprises the collar with the level and carbide ring cylinder, described upper punch comprises round handle and carbide alloy core bar, described low punch comprises base and the hard alloy punch head that bottom surrounding is provided with outer chamfering, described carbide ring cylinder is embedded in the collar, stepped hole is had in this carbide ring cylinder, described carbide alloy core bar is arranged on bottom round handle, described hard alloy punch head is arranged on base top and inserts in stepped hole, described base has core bore, hard alloy punch head has the relief hole be communicated with core bore.

2. wire drawing die mould according to claim 1, is characterized in that: described carbide ring cylinder, carbide alloy core bar and hard alloy punch head all adopt the carbide alloy of HRA more than 88 to make.

3. wire drawing die mould according to claim 1, is characterized in that: described carbide alloy core bar by skive milling processing and polishing make.

4. wire drawing die mould according to claim 1, is characterized in that: described carbide alloy core bar is being justified bottom handle by welded and installed.

5. wire drawing die mould according to claim 1, is characterized in that: described hard alloy punch head by welded and installed in base top.

6. wire drawing die mould according to claim 1, is characterized in that: the core bore on described base and outer chamfering adopt once molding formed.

7. wire drawing die mould according to claim 1, is characterized in that: the described collar, circle handle and base all adopt steel.