SU889458A1 - Casting machine knocking-out apparatus - Google Patents

Description

one

The invention relates to machines for the injection of thermoplastic materials, more precisely to the mechanisms that push an article out of an instrument, and can be used in chemical and polymer engineering.

A device for ejecting an injection molding machine is known, which comprises an ejector in the form of a movable plate of a hydraulic cylinder rod installed in a plunger cavity and connected to a pressure element mounted on guides, the rod connection with the pressure element being shaped as a carrier and a rod connected to it that is installed mixing parallel to the axis of the rod 1.

The disadvantage of this device is its complexity, which is due to the location; I eat in the cavity of the plunger gidroshshindra, drove, rod and sent yushi.

The closest in technical drying and the achieved result to the invention is a device for pushing out a molding machine, containing a traverse with fixed ones. on it pushers mounted with

the possibility of mixing with respect to: the longitudinal axis of the casting mashins synchronously with the piston of the locking mechanism. In the last device traverse with vypalkvntel m is installed in the cavity of the piston of the locking mechanism, and the absence of intermediate connecting links simplifies the design of the device 12.

The drawbacks of the device are its considerable dimensions, which is explained by the fact that the length of the ejectors is included in the dimension

10 (in length) of the entire device, i.e. is reflected on the size between the outer ends of the locking mechanism and the movable plate, and the limitation of the overall dimensions of the cross member (in cross section) by other parts and assemblies. This, in turn, leads to a limitation of the workforce, because the dimensions of the traverse, while increasing the force, provide it with the necessary strength and rigidity. .

The purpose of the invention is to reduce the size

20 devices.

Claims (2)

This goal is achieved by the fact that in an ejection device of an injection molding machine that contains a cross bar with rippers mounted on it, mounted for movement relative to the longitudinal axis of the casting bar synchronously with the piston of the locking mechanism, the bar is arranged with a hole located along the central axis for placing the rod The gear mechanism locks, and the pushers are provided with limiting shoulders located at their working ends. The drawing shows a device, a general view. The device comprises a yoke 1 with a hole along the central axis, which is placed on the nogok 2 of the piston 3 of the locking mechanism with the possibility of synchronous movement with the piston 3 of the locking mechanism and with the possibility of axial movement of the yoke 1 relative to the ngtok 2. The ejector 4 is fixed fixed to the yoke t through the guide holes in the flange 5. The flange 5 is fixedly mounted on the movable plate 6 of the casting mat which is guided by columns 7 connecting the stationary plate 8 to the hydraulic cylinder 9. The stops 10 are fixedly fixed on the front end of the hydraulic cylinder 9. The ejectors 4 are provided with limiting pins 11 located at their working ends. Traverse 1 is placed outside the porn 3, which allows to increase the ejection force due to selection of the necessary cross section 1. Ejection device works following way. The movable plate 6 is moved forward, while the yoke 1 is interchanged with it due to the restrictive shoulders 11 on the ejector 4, to set it to its original position. When moving the movable plate 6 back, after the extrusion is completed, the yoke 1 part of the path moves along with it because the restrictive shoulders 11 are pressed against the end of the flange 5 by an ejector molding system. At the end of the path, the traverse 1 reaches the fixed stops 10 and, the latter stops it together with the ejectors 4, which, in the course of the further / sludge plate 6, further detach the finished part. The technical and economic advantages of the invention are that the size and weight of the device are reduced by approximately 7%. Especially valuable is that the size is reduced in length. This makes it possible to free up additional production space for machines with a horizontal piston stroke, as well as integrate into a smaller height for machines with vertical portions. Extraction of finished parts is also facilitated, and this process may be more mechanized for parts of complex configuration by increasing the ejection force. The economic effect of using the invention is approximately 12,000 rubles. in year. The invention of the injection molding machine, comprising a traverse with ejector mounted on it, mounted to move relative to the longitudinal axis of the injection molding machine synchronously with the piston of the locking mechanism, characterized in that, in order to reduce the dimensions of the device, the traverse is made with a hole located along the central axis to accommodate the front axle locking mechanism, the pushers are provided with limiting shoulders located at their working ends. Sources of information taken into account in the examination. 1. USSR Author's Certificate No. 509445, cl. B 29 F 1/14, 1973, 2. Gurvich SG and others. Maschiny for processing thermoplastic materials. M., Mechanical Engineering 1965, p. 21-22, t. 11 (prototype).