SU1253722A1 - Pushing device for die casting machine - Google Patents

Description

production, in particular for machines for casting under pressure.

The aim of the invention is to reduce the mold changeover time.

FIG. 1 shows a device ready for operation; in fig. 2 shows section A-A in FIG. 1 (rotational drive); FIG. 3 is a section BB in FIG. 1 (through the groove in the plate ejector); in fig. 4 shows a section B-B in FIG. 1 (connection of the rod with the shaft of the rotation drive).

When the movable mold holder 3 is moved to the right, it approaches closely to the movable plummer 8, with the collar 16 being inserted into the groove 14 and positioned in the annular groove 13. After pressing the mold 6 between the mold carriers 2 and 3 and securing the half molds 7 and 8 on the corresponding formers, the mechanisms 5, the cylinder 23 through the rail 22 and the gear wheel 21 rotate the rod 15 by 90. The burt stand on the machine bed 1 is cast under pressure (Fig. 1) is located opposite to position 27 (Fig. 3), the coupling former 2 and the movable din plate 9 "ejector with a torque converter 3 with a 15 on board axial direction. Fixed by the ejection cylinder 4 and the torus 28 protects the rod 15 from the case of the mechanism 5 for fixing the press-forming turn. For ejection, we 6. Mold 6 consists of non-molds after opening a press mold.

6, pressure is supplied to the piston cavity 29 of the hydrocyliidre 4, and to return the pushers 10 to the rod end.

 half mold 7, mobile half mold 8 with an ejector plate 9 located in it, ejectors 10 and counter pushers 11. In plate 9, the cavity 30. After the casting, sleeve 12 with an annular batch of parts of the mold 6 is necessary.

This 13 and through the oval groove 14 (Fig. 3). At the end of the stem 15, the flange 16 is made, corresponding to the profile of the groove 14 and interacting with the annular groove 13. At the other end of the stem 15, the protrusion 17 is complete. In ke 18, there is an actuator for rotating the rod 15, made in the form of a shaft 19 interacting through a fork

20 with a protrusion 17 and through gear 21 35 lindrom 23 rotate the rod 15 on

And the rail 22 - with plunger cylinders 23 (Fig. 2).

The device works as follows

To fasten the mold 6 under-40 D t the mold 6 from the form-holder

The viscous form holder 3 is set to the extreme left position (the machine is opened), the rod 15 of the cylinder 4 and the collar 16 is retracted to the initial position 24 (FIG. 3), in which the protrusion 17 enters the fork 20, and the collar 16 is positioned to ensure its passage through the groove 14 of the sleeve 12. The movable 8 and the fixed 7 half-molds of the mold 6 are connected, fastened with a connecting device (not shown), while the half-form 7 through the counter-pushers 11 sets the plate 9 to the extreme rear position, not 3, while the shoulder 16 out through the groove 14 of the engagement with the plate 9. So about At one time, the wiper plate 9 is disconnected from the cylinder 4.

45 Fixation of the rod 15 from spontaneous rotation can be performed both in the plate of the pushers 9 using the clamp 28, and in the movable mold holder 3 in the form of a key

50 31 and the corresponding grooves in the rod 15. Because the cylinder of the hydraulic cylinder is installed with the possibility of rotation and interacts with the rotation drive only in the rearmost

required for connection with collar 16.js position, it is possible

The assembled mold 6 is installed and the rotation drive is installed out of the hydraulics in the opened mavshnu on the rollers of the cylinder and is made in the form of 25, which provide it with preliminary plunger cylinders. it

upright and. horizontal directions.

When the movable mold holder 3 is moved to the right, it approaches closely to the movable plummer 8, with the collar 16 being inserted into the groove 14 and positioned in the annular groove 13. After pressing the mold 6 between the mold carriers 2 and 3 and securing the half molds 7 and 8 on the corresponding formers, the mechanisms 5, the cylinder 23 through the rail 22 and the gear wheel 21 rotate the rod 15 by 90. The burt becomes in position 27 (fig. 3), the joint plate 9 of the pushers with the rod 15 in the axial direction. Lock 28 protects rod 15 against accidental rotation. To push the castings out after opening the press arm

cavity 30. After casting, it must be removed from the machine. For this, the mold holder 3 assembles the mold 6, fastens the mold halves 7 and B between them, detaches the fixed mold mold 7 from the mold holder 2, and then takes the mold out of the mold 6 later. Then pressures the cavity 30 of the hydraulic cylinder 4, inserting the protrusion 17 the rod t5 into engagement with the fork 20, and chi90, set the collet 16 to position 24 corresponding to its free passage through the groove 14. Mechanisms 5 of the rolling mold holder 3 turn 3, while the collet 16 exits through the groove 14 from the engagement with the plate 9. Thus, the plate 9 ditchers are disconnected from cylinder 4.

The fixation of the rod 15 from spontaneous rotation can be performed both in the plate of the ejectors 9 using the clamp 28, and in the movable mold holder 3 in the form of a key

31 and the corresponding grooves in the rod 15. Due to the fact that the cylinder of the hydraulic cylinder is installed with the possibility of rotation and interacts with the rotation drive only in the rearmost

312537

simplifies the supply of pressure to the cylinders and the steering device. Accordingly, the dimensions of the device are reduced, which allows the use of the space available for the placement of the available space behind the cylinder cover.

The device allows you to speed up the installation of the mold on the machine for

224

pouring under pressure, improves the working conditions of the installers, simplifies the design of the machines and increases its reliability. In addition, the reduced dimensions allow the device to be placed in the machine in the space between the levers of the locking mechanisms without changing the machine.

23 22 1

G8

AND

FIG. 2

Fi.Z

In In

Editor T.Parfeyova

Compiled by A. Mandrik Tehred L. Serdyukova

Order 4665/15 Circulation 757 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk ab. 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Proofreader L. Patay

Claims (2)

1. PUSHING DEVICE OF THE MOLDING MACHINE UNDER PRESSURE, including a hydraulic cylinder with a rod and a plate of ejectors of a mold, characterized in that, in order to reduce the time of readjustment of the mold, a through groove and an annular groove, a groove, a hydraulic cylinder of ejection are provided with a rod turning actuator, and at the end of the rod a shoulder is made corresponding to the groove profile and interacting with the annular groove. 2. The device according to claim 1, characterized in that the rotation drive is made in the form of a shaft interacting through a rack-and-pinion gear with plunger cylinders and through a fork with the other end of the hydraulic cylinder rod. Put ·. / * 1253722.