SU1340894A1 - Die-casting mould - Google Patents

Abstract

The invention relates to foundry. The aim of the invention is to reduce the labor intensity of making castings by cutting the volume from the end planes of the casting. The scraping is performed by the knife 2 S 3 moved by the wedge 12. When the mold opens, the spring-loaded insert 6 moves the casting to the plane of the connector, while the knife slides along the surface of the connector and cuts the scrap. Upon further opening of the mold, the cavity 4 in the knife 3 is set against the cavity of & C. (movable half-form 2. Next, the casting is pushed into the cavity 4. When the half-form is closed, the knife moves upwards together with the casting, thus cutting off the rim from the second end of the casting. combining cavity 4 with channel B of the movable half-form, the ejector 11 moves the casting from cavity 4 to channel B, through which it rolls into the tray. The sheet from the cavity from (the mold is removed by insert 6. 8 il. J 7/2 SS (L oo N 00 from 4

Description

The invention relates to foundry and is intended to produce castings without gates and flush on end surfaces.

The purpose of the invention is to reduce the labor intensity of making castings by trimming scrap from the face planes of the casting.

FIG. 1 shows a schematic mold at the time of pressing; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2; in fig. 4 - the mold at the time of cutting the sprue and scraped from the surface of the first end of the casting; in fig. 5 - the same, at the time of placement of the casting in the cavity of the knife; in fig. 6 - the same, at the moment of pushing the cut-off dib from the movable half-form; in fig. 7 - the same, at the moment of ejection of the casting from the knife; in fig. 8 is a section BB in FIG. 7

The mold contains a stationary half-mold 1 and a mobile half-mold 2, in which a cavity is made for casting with a channel 5 for the sprue, as well as a channel 6 for removing the casting and a knife 3 is installed for separating the sprue and in which a cavity 4 is made, ejectors 5 , insert 6, spring-loaded with spring 7, limiter 8 of movement of insert 6, rigidly connected to the knife. The insert interacts with the pusher 9 placed in the fixed half-form 1. In addition, the fixed half-form 1 has a rod 10 in which the channel B is made for the gate and ejector 11 located coaxially to the channel b made in the mobile half-form 2. The knife 3 is driven the form of an inclined finger 12, located in ne1

ten

After pressing the melt into the cavity of the mold and holding it to solidification, the mold is opened. At the same time, the movable half-form 2 begins to move to the left and the pusher 9 releases the insert 6, which under the action of the spring 7 begins to move and moves the casting to the right. At this time, through the interaction of the inclined finger 12 with the hole in the knife 3, the movement of the knife and the associated stopper 8 downwards begin. Box 6 when moving

15 under the action of the spring 7, with its shoulder, hits the stop 8 and stops, aligning the first end of the casting with the plane of the connector (Fig. 4) Upon further disclosure

20 of the mold, the knife 3 continues to move downward and the sprues are trimmed and the scrap is made from the first end of the casting. The ability to move the limiter 8 together with the knife 3 downwards provides 25 with a slot in the limiter 8 and a width greater than the diameter of the insert 6.

At the end of the turn, open the cavity 4 under, the casting, made in the knife 3, is set coaxially with the cavity,

30 extruded in the movable mold 2. Next, the casting is pushed out, in which it moves from the cavity of the movable mold to the cavity 4 of the knife 3 (Fig. 5) Then the j mold is closed and the mold is closed. the finger 12 with the knife 3, the latter, with the casting, begins to move upwards and cuts the burrs from the second end of the casting due to its interaction with the edges of the movable half-form.

With further closure of the mold and, accordingly, the movement of the knife 3 and with it the limiter 8

40

movable half-form 1, with the possibility

interaction with the hole, made g upwards, the latter is disconnected in the knife 3. The rigidly connected stopper 8 and the knife 3 move between two stops and are spring-loaded towards the upper stop (the spring is not shown in the projection). The inclined finger 12 has the ability to exit the knife hole 3 The cavity for casting is located in the movable mold 2 and is formed after the mold is closed between the spring-loaded insert 6 and the core 10 (Fig.).

The mold works as follows.

50

with the shoulder of the spring-loaded insert 6. As a result, the insert 6 is moved to the right by the action of the spring 7 and pushes the cut-off burr out from the cavity of the movable half-form 2 (Fig. 6). Continuing up, the knife 3 stops at the position where the cavity 4 is under casting in the knife coincides with channel a for gg casting removal. Further closure of the mold leads to the interaction of the ejector 11 with the casting in the cavity of the knife, resulting in the last ejector

After pressing the melt into the cavity of the mold and holding it to solidification, the mold is opened. At the same time, the movable half-form 2 begins to move to the left and the pusher 9 releases the insert 6, which under the action of the spring 7 begins to move and moves the casting to the right. At this time, through the interaction of the inclined finger 12 with the hole in the knife 3, the movement of the knife and the associated stopper 8 downwards begin. Box 6 when moving

5 under the action of the spring 7, with its shoulder, hits the stop 8 and stops, aligning the first end of the casting with the plane of the connector (Fig. 4) Upon further disclosure

0 the mold continues the movement of the knife 3 downwards and the cutting of the sprues and the burr from the first end of the casting takes place. The ability to move the limiter 8 together with the knife 3 down provides 5 with the presence in the limiter 8 a groove g wider than the diameter of the insert 6.

At the end of the turn, open the cavity 4 under, the casting, made in the knife 3, is set coaxially with the cavity,

0 extruded in the movable mold 2. Next, the casting is pushed out, in which it is moved from the cavity of the movable mold to the cavity 4 of the knife 3 (Fig. 5) Then the mold is closed, which due to the interaction of the inclined finger 12 with the knife 3, the latter, with the casting, begins to move upwards and cuts the burrs from the second end of the casting due to its interaction with the edges of the movable half-form.

With further closure of the mold and, accordingly, the movement of the knife 3 and with it the limiter 8

0

0

with the shoulder of the spring-loaded insert 6. As a result, the insert 6 is moved to the right by the action of the spring 7 and pushes the cut-off burr out from the cavity of the movable half-form 2 (Fig. 6). Continuing up, the knife 3 stops at the position where the cavity 4 is under casting in the knife coincides with channel a for g casting removal. Further closure of the mold leads to the interaction of the ejector 11 with the casting in the cavity of the knife, with the result that the ejector 3

Into the channel g n under the action of its own weight rolls into the pallet (Fig. 7). At this time, the pusher 9 interacts with the spring-loaded insert 6 and returns it to its original position. Then the cycle repeats.

The invention makes it possible to produce castings without breaks on the end surfaces parallel to the plane of the connector. This leads to a reduction in the labor intensity of casting and an increase in productivity.

Claims (1)

Invention Formula A mold for casting under pressure predominantly castings with two parallel face planes, containing a movable mold with 408944 forming cavity, sprue channel, perpendicular to the plane of the mold connector, casting pushers and a knife for cutting the sprue placed in the plane of the connector, and a fixed mold with a knife moving drive, the account of trimming around the end face of the casting; it is provided with a spring-loaded insert, which forms one of the ends of the casting, installed in the movable half-form, with an insert return pusher installed in the fixed half-bore e, the movement restrictor insert is rigidly associated with the knife, with a knife vy2Q polyene under the casting cavity, and in the stationary mold half mounted ejector blade casting from the cavity. Aa FIG. 2 Yu FI.5 Editor M. Tovtin FIG. B Compiled by A. Kuznetsova Tehred And, Popovich Proofreader D. Zimokosov 4382/15 Circulation 740 Subscription VNISh State Committee of the USSR for inventions and discoveries P3035, Moscow., Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4