CS270496B1 - A device for ejecting shots from plastic injection molding machines - Google Patents

Abstract

The device is used to automate the operation of plastic injection molding machines without the use of more expensive automation devices, such as robots and manipulators. The device ensures the transport of larger pellets from the machine's working area, after the pellets have been previously ejected from the mold. This enables the machine to operate in an automatic cycle. The device catches the pellet ejected from the mold into a catch basket (2) where the ejection of pellets is checked. Holders and a pressure plate (4) are attached to the moving ram of the machine, which, when the ram moves forward, pushes the ejected pellet (5) along the track (3) out of the machine's working area. The movement of the ram can be secured by a sensor behind the spring-loaded pressure plate in case the pushing force is exceeded.

Description

The invention relates to an apparatus for ejecting sprays from plastic injection molding machines β using the movement of the machine ram.

The known methods of removing the shots in permanent weight, about 1 kg, from plastic injection molding machines were based on human physical activity, or on the use of robots and manipulators. Only in the case of changing shafts, approx. Under 1 kg, the automatic operation was ensured by the fact that the projections dropped into the reservoir, eventually on the slip and by slip into the reservoir. It is not possible to use this method in the case of massive or larger spouts due to the lack of grinding under the injection mold.

These drawbacks are overcome by the invention, which provides a new device for removing moldings from plastic injection molding machines. The device consists of a catch basket, a track and holders with a spring-loaded pressure plate. In the lower part of the catcher there is a strip which controls the switch for reglatracl of the moldings on the track. Oalěl switch as leans against the pressure plate and registers the exceeding of the pushing force.

The device enables automation of the manufacturing process in the plastics industry without the need for expensive and cost-intensive automation systems such as manipulators and robots. Devices utilizing the present invention are cost-effective and highly reliable in operation, allowing simple automation elements to be used during the transport of the sprays.

1 is a schematic illustration of a plastic injection molding machine according to the invention. FIG. 2 shows the device in the section shown.

The device ee consists of a catch basket 2, from the track it is β from holders with a spring-loaded pressure plate 4 fixed to the movable ram of the plastic injection molding machine JL.

1, a device according to the invention is shown, wherein the projections 5 fall freely into the catcher 2 of the open mold at the rear position of the movable ram. After checking the dropout of the baffle 5 from the mold, the moving ram begins to close the mold. At the same time, they move the holders e through the pressure plate 4, which is fixed to the movable ram, and moves a plurality of sprays 5 along the path 3 of the working prooter.

Apparatus of the Invention It may be used in the plastics industry to introduce automation without the use of manipulators and robots.

Claims (1)

Device for ejecting injection molds from plastic injection molding machines, characterized in that it consists of a catcher (2), a track (3) and holders and a pressure plate (4), wherein the holders e with the pressure plate (4) are attached to the movable slide of the plastic injection molding machine instruments (1).