CN205324595U - Horizontal double -end cold -heading cover half - Google Patents

Abstract

The utility model discloses horizontal double -end cold -heading cover half, including hollow body, be equipped with the passageway that runs through in the body, the passageway divide into thimble chamber and cold -heading chamber, and the chamber wall in cold -heading chamber is inlayed and is inserted, and the cold -heading chamber is located the both ends of body, and the thimble chamber is located the middle part of body, and the middle part in thimble chamber is equipped with the thimble seat chamber, and it is equipped with the thimble seat to slide in the thimble seat chamber, and the both ends of thimble seat are equipped with the thimble that inserts in the thimble chamber respectively. Set traditional thimble to double -end structure to change the thimble in the cover half into movable state from quiescent condition. Because the thimble can carry out two -way cold -heading operation to the cover half after setting double -end structure to to the action that utilizes a direction cold -heading is ejecting from the cover half with opposed work piece, reaches the make full use of resource and the purpose of utilizing the return time.

Description

Horizontal double end cold-heading cover half

Technical field

This utility model relates to the cover half of a kind of cold-heading molding, is specifically related to a kind of horizontal double end cold-heading cover half。

Background technology

Cold-heading is to utilize mould forging method to metal bar material upsetting formation at normal temperatures。It is commonly used to manufacture the head of screw, bolt, rivet etc.。Can reduce or replace machining。Forging stock material can be copper, aluminum, carbon steel, steel alloy, rustless steel and titanium alloy etc., and stock utilization is up to 80～90%。Cold-heading is many to be carried out on special cold headers, it is simple to realize continuously, multistation, automated production。Certain depth automatically sent by bar by feed mechanism, and shut-off mechanism is cut into blank, is then delivered to accumulation swaging successively by clamp transport mechanism and punching station carries out cold upset forming。The major advantage of cold-heading: cold-heading can be processed into and is suitable for compared with small load and shorter span。Unusual cross sectional shape can be obtained economically, it is thus achieved that gratifying strength-weight ratio by cold-heading processing。Consider packaging and the tight type of transport, nestable cross section can be produced。The impact of non-telescope deformation under surrounding gravity effect。

At present, in cold-heading is processed, the device often used is spring punch die。General spring punch die is vertically arranged, is provided with a thimble doubling as heading。But, in order to strictly control the size of the workpiece after cold-heading, it is a fixing value that general thimble stretches into the length in die cavity, just bar cold-heading can be become workpiece after the fully-inserted die cavity of thimble。After workpiece cold-heading molding, it is necessary to will take out in its driven die cavity, in general, the workpiece that shape is comparatively regular can come off under gravity automatically from die cavity, it is achieved stripping operation。But, man-hour is being added for special workpiece, bar is after cold-heading, and partial cross section is long-pending becomes big, can occur the phenomenon containing material in die cavity。Add workpiece deadweight less, it is impossible to deviate from from die cavity by workpiece under the effect of self gravitation。When running into this workpiece, after cold-heading, it is necessary to thimble is exited from spring punch die, insert in die cavity with another longer push rod, workpiece is ejected。This mode, not only wastes time and energy, and is repeatedly inserted into push rod and thimble all suffers from a problem reorientated every time, once location is inaccurate, can cause the deflection of push rod or thimble or even fracture during insertion。Furthermore, conventional cold-heading mechanism is all vertically arranged, and the vertically arranged deadweight mainly making full use of equipment carries out cold-heading operation。But, vertically arranged cold-heading mechanism, it is impossible to effectively utilize the action of thimble backhaul, actually cause the waste on time and power。

Utility model content

The purpose of this utility model is in that to provide a kind of horizontal double end cold-heading cover half, adopts the fixed mould structure of improvement, utilizes the thimble in cover half to complete the action of cold-heading and pusher in the process of cold-heading。

For reaching above-mentioned purpose, the technical solution of the utility model is: horizontal double end cold-heading cover half, body including hollow, the passage being provided with through in described body, described passage is divided into thimble chamber and cold-heading chamber, the cavity wall in described cold-heading chamber is inlaid with insert, described cold-heading chamber is positioned at the two ends of body, described thimble chamber is positioned at the middle part of body, the middle part in described thimble chamber is provided with thimble seat chamber, slide in described thimble seat chamber and be provided with thimble seat, the thimble being respectively arranged at two ends with in insertion thimble chamber of described thimble seat。

When adopting technique scheme, traditional thimble is arranged to bipitch structure, and changes the thimble in cover half into movable state from resting state。After being arranged to bipitch structure due to thimble, it is possible to cover half carries out two-way cold-heading operation, and utilizes the action of a direction cold-heading to be ejected from cover half by the workpiece on opposite, reach make full use of resource and utilize the purpose of return interval。Concrete, thimble chamber in the middle part of body adds a thimble seat chamber, thimble seat is made to be merely able to slide at thimble seat intracavity, and when thimble seat touches thimble seat cavity wall, thimble seat is had one to support and position-limiting action by thimble seat cavity wall, make thimble can undertake the pressure of cold-heading, by body fixing to this pressure transmission to thimble seat cavity wall and then the level that passes to。On the other hand; thimble seat slides in thimble seat chamber; the distance of its slip finally shows that the thimble of opposite side stretches in the length in thimble chamber; when thimble is maximum stretch into thimble chamber time; the workpiece of molding in thimble chamber will be ejected, it is to avoid workpiece card is placed in thimble chamber needs independent step and structure to be ejected, not only saved the step of processing; the gap being also fully utilized by the course of processing dynamic model backhaul carries out liftout operation, has and important progressive meaning。

Further improvement project, for the matching problem in solving the processing of thimble seat and using, described thimble and thimble seat be all cylindrical, and the axis conllinear of described thimble and thimble seat, the diameter of described thimble seat is more than the diameter of thimble。Above-mentioned setting, the mode of circumgyration incision can be utilized to process thimble seat and the thimble structure of one by work in-process, and in use, thimble seat chamber coordinates with thimble seat, thimble seat is made to be applied to the pressure in thimble seat cavity wall comparatively uniform, it is prevented that to cause stress raisers。

Further improvement project, in order to take into account thimble seat and thimble intensity, and needs structure reasonable in design to seek the balance of mechanical property and processing cost, and the diameter of described thimble seat is the twice of thimble diameter。

Further improvement project, the vertical sectional shape in described cold-heading chamber is " convex " font。It is set to the section of workpiece after " convex " font can embody cold-heading and occurs becoming big situation and cross sectional shape the ejecting without influence on workpiece of rule。

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail:

Fig. 1 is the structural representation of this utility model horizontal double end cold-heading cover half embodiment。

Detailed description of the invention

Accompanying drawing labelling: body 1, thimble chamber 11, cold-heading chamber 12, insert 2, thimble chamber 11, thimble 3, thimble seat chamber 4, thimble seat 31, shaping workpiece 5。

As it is shown in figure 1, the horizontal double end cold-heading cover half of this utility model, wherein the main part of cover half is the body 1 of hollow, and the lateral wall of body 1 is correspondingly arranged on corresponding fixed structure, for body 1 is fixed on mounting seat。Whole body 1 can be made with metal, forms a passage run through in body 1。This passage is divided into thimble chamber 11 and cold-heading chamber 12, and thimble chamber 11 is near the stage casing of body 1, and cold-heading chamber 12 is set up separately at the both ends of body 1。In body 1, the cavity wall place being positioned at cold-heading chamber 12 is inlaid with insert 2, and the hardness of insert 2 is more than the hardness of body 1, when carrying out workpiece cold-heading molding in cold-heading chamber 12, is possible to prevent body 1 is caused abrasion by insert 2。The thimble seat chamber 4 more than thimble 3 cross section, the cross section it is formed with at the middle part in thimble chamber 11。Have a thimble seat 31 at the middle part of thimble 3, thimble seat 31 is arranged in thimble seat chamber 4, and thimble seat 31 can slide at thimble seat chamber 4 cathetus。Wherein, thimble seat 31, thimble seat chamber 4, thimble 3 length also have a matching relationship。Specifically as shown in Fig. 1 position put, when the bottom surface of thimble seat 31 contacts with the inner bottom surface in thimble seat chamber 4, the bottom transition of thimble 3 is stretched in the thimble chamber 11 of body 1 bottom, is ejected by shaping workpiece 5 in the thimble chamber 11 of bottom；In this case, the upper end of thimble 3 is normally stretched in the thimble chamber 11 on body 1 top, and at this moment, the upper end of thimble 3 forms the cold-heading bottom surface in the thimble chamber 11 on body 1 top, and pressure is passed to thimble seat chamber 4 by the bottom surface of thimble seat 31 by thimble 3, and then passes to body 1。

During use, whole cold-heading cover half is horizontal positioned, for the ease of describing, is illustrated for Fig. 1 upper-lower position put。Insert in the thimble chamber 11 on top after bar to be processed is gripped by upper dynamic model, and upper dynamic model applies cold-heading pressure, bar is made to withstand thimble 3, by thimble 3, thimble seat 31 is promoted, until thimble seat 31 withstands in the cavity wall in thimble seat chamber 4 immovable, simultaneously the thimble 3 of thimble seat 31 bottom by the thimble chamber 11 of bottom the shaping workpiece 5 of cold-heading molding eject。Upper dynamic model continues to cold-heading pressure, by bar cold-heading molding in the thimble chamber 11 on top。Going up dynamic model afterwards to exit, shaping workpiece 5 is probably due to be stuck in containing the reason expected and can not automatically exit from the thimble chamber 11 on top。The lower dynamic model of operation inserts in the thimble chamber 11 of bottom after being gripped by lower dynamic model by bar to be processed, and lower dynamic model applies cold-heading pressure, bar is made to withstand thimble 3, by thimble 3 by thimble seat 31 upwardly, until thimble seat 31 withstands in the cavity wall in thimble seat chamber 4 immovable, simultaneously the thimble 3 on thimble seat 31 top by the thimble chamber 11 on top the shaping workpiece 5 of cold-heading molding eject, lower dynamic model continues to cold-heading pressure, by bar cold-heading molding in the thimble chamber 11 of bottom。Alternately above-mentioned action, it is achieved the operation of cold-heading molding and automatic material returning on cold-heading cover half。

Traditional thimble is arranged to bipitch structure by this utility model, and changes the thimble 3 in cover half into movable state from resting state。After being arranged to bipitch structure due to thimble, it is possible to cover half carries out two-way cold-heading operation, and utilizes the action of a direction cold-heading to be ejected from cover half by the workpiece on opposite, reach make full use of resource and utilize the purpose of return interval。Concrete, thimble chamber 11 in the middle part of body 1 adds a thimble seat chamber 4, make thimble seat 31 be merely able in thimble seat chamber 4 to slide, and when thimble seat 31 touches thimble seat chamber 4 wall, thimble seat 31 is had one to support and position-limiting action by thimble seat chamber 4 wall, make thimble 3 can undertake the pressure of cold-heading, by body 1 fixing to this pressure transmission to thimble seat chamber 4 wall and then the level that passes to。On the other hand; thimble seat 31 slides in thimble seat chamber 4; the distance of its slip finally shows that the thimble 3 of opposite side stretches in the length in thimble chamber 11; when thimble is maximum stretch into thimble chamber 11 time; the workpiece of molding in thimble chamber 11 will be ejected, it is to avoid workpiece card is placed in thimble chamber 11 needs independent step and structure to be ejected, not only saved the step of processing; the gap being also fully utilized by the course of processing dynamic model backhaul carries out liftout operation, has and important progressive meaning。

Above-described is only preferred implementation of the present utility model; should be understood that; for a person skilled in the art; without departing from the concept of the premise utility; some deformation and improvement can also be made; these also should be considered as protection domain of the present utility model, and these are all without affecting effect and the practical applicability that this utility model is implemented。

Claims (4)

1. horizontal double end cold-heading cover half, body including hollow, the passage being provided with through in described body, described passage is divided into thimble chamber and cold-heading chamber, and the cavity wall in described cold-heading chamber is inlaid with insert, it is characterized in that, described cold-heading chamber is positioned at the two ends of body, and described thimble chamber is positioned at the middle part of body, and the middle part in described thimble chamber is provided with thimble seat chamber, slide in described thimble seat chamber and be provided with thimble seat, the thimble being respectively arranged at two ends with in insertion thimble chamber of described thimble seat。

2. horizontal double end cold-heading cover half according to claim 1, is characterized in that, described thimble and thimble seat are all cylindrical, and the axis conllinear of described thimble and thimble seat, the diameter of described thimble seat is more than the diameter of thimble。

3. horizontal double end cold-heading cover half according to claim 2, is characterized in that, the diameter of described thimble seat is the twice of thimble diameter。

4. horizontal double end cold-heading cover half according to claim 1, is characterized in that, the vertical sectional shape in described cold-heading chamber is " convex " font。