SU772879A1 - Device for deflashing plastic articles - Google Patents

Description

(54) DEVICE FOR REMOVAL OF THE DRAW FROM PLASTIC PRODUCTS

one

The invention relates to the machining of polymeric materials and can be used for finishing products after pressing them.

A device for treating cylindrical parts is known, which contains two rotating in opposite directions at different speeds, rubber discs for imparting a rotary motion to the workpiece and simultaneously moving into the treatment area where the burr is removed around the end of the workpiece, driven by the grinding wheel 1 .

Such a device is unsuitable for removing an oblo for one installation over a cylindrical surface and a n0 two ends of parts.

Closest to the proposed one, there is a device for stripping plastic products, containing a machining tool consisting of a rotatable roller with a notch on a cylindrical surface and a support element mounted thereto with a clearance. In the known device, the support element is designed in the form of a pinion, which provides support, movement and removal of oblo from the reinforcement pressed into plastic 2.

This embodiment of the support element does not allow processing in the proposed device cylindrical products of complex shape.

The purpose of the invention is to enable the processing of cylindrical parts of a complex profile.

10 This is achieved by the fact that in the device for removing the plastic from the plastic products containing a machining tool consisting of a rotatable roller with a notch on the cylindrical surface and a support element mounted thereto with a clearance, the support element is designed as two-sided roller annular sectors with a notch on cylindrical surfaces facing the roller, forming a gap with the surface of the roller, tapering in the direction of rotation of the latter, the sector being first during rotation of the roller, is spring-loaded to the roller, and the second is fixed and equipped with

located on the end surfaces of the cutting edges.

FIG. 1 shows the device, a general view; in fig. 2 shows section A-A in FIG. one.

The device consists of a roller 1 driven by an electric motor and a gearbox (not shown in the drawing). On the cylindrical surface of the roller 1 is made a notch. With a variable clearance in the radial direction relative to the roller 1, two ring sectors are installed. Sector 2 has the ability to swing around axis 3 and is spring-loaded plate spring 4 in the direction of the roller 1, sector 5 is fixed stationary. The swinging and forcedly pressed to the workpiece sector 2 provides the ability to process parts that have a significant variation in the size of the protruding on the diameter and subject to removal oblo.

On the inner cylindrical surfaces of the ring sectors 2 and 5, a notch file is made. The width of sectors 2 and 5 is equal to the length of the finished part. Moreover, the surface with a notch facing in the direction of the working surface is driven in rotation of the roller 1 and are located eccentrically relative to it.

The end surfaces of the annular fixed sector 5 are fixed with knives 6 with an inclined cutting edge facing the roller 1. The profiles of the cylindrical surface of the roller 1 facing the roller of the cylindrical surfaces of the annular sectors 2 and 5 correspond to the cylindrical configuration of the surfaces of the workpiece 7 (see Fig 2) entering the treatment area through the inlet tray 8. After processing the parts, the tray 9 enters the receiver.

The device works as follows:

The rotational gear is transmitted from the electric motor through the worm gear to the roller 1. The parts 7 to be processed (Fig. 2) (for example, the frame of the radio equipment apparatus) pass through the inlet tray 8 to the treatment zone. The roller 1 by a notch on the cylindrical surface captures the part 7 and informs it of a complex (rotational plus translational circular) movement.

As a result of the interaction of the part 7 with the grooved surfaces of the roller 1 and the ring sectors 2 and 5, as it moves in the direction of rotation of the roller 1, an oblo will be removed along its cylindrical surface. Upon further movement of the part 7 into the zone of the fixed sector 5, as a result of its interaction with the blades 6, trimming of the bingo occurs at the ends. After final processing, the cylindrical surface and the ends of the parts 7 through the tray 9 enter the receiver.

The proposed device makes it possible to remove obli from parts with a complex configuration of the profile of cylindrical surfaces, and in one installation the obd is removed both from the generators and from the end faces.

surfaces. Compared to the known, this device is simpler and more reliable in operation and has a wider application.

Claims (2)

Invention Formula A device for removing oblique plastic products containing a machining tool consisting of a rotatable roller with a notch on a cylindrical surface and a support element mounted thereto with a gap, characterized in that, in order to enable processing of cylindrical parts of a complex profile, the reference element 30 is made up of two successively arranged annular sectors with a notch on the cylindrical surfaces facing the roller and forming a gap with the surface of the roller, which narrows in the direction of rotation of the latter, 3 wherein the sector located along the rotation of the roller, the first, is spring-loaded to the roller, and the second is fixedly fixed and provided with cutting edges located on the end surfaces. jj Sources of information taken into account during the examination 1. Zavgorodniy V. Mechanization and automation of plastics processing, M., Mashinostroenie, 1970, p. 547-548, fig. 292. five 2. USSR author's certificate No. 401522, cl. B 29 C 17/12, 1971 (prototype).