SU1437239A1 - Method of removing flash from internal and external surfaces of moulded articles - Google Patents

Abstract

The invention relates to methods of machining products from polymeric materials to remove flash from ring molded products. The goal is to improve the quality of processing products. For this, a stack of ring products is placed between the pressure roller and the support rollers, the rotational drives are turned on, and the rotational speed of one of the support rollers is chosen to be lower than the rotation speed of the other support roller. 3 il.

Description

four

00

N5

WITH

with

one

The invention relates to methods of machining products from polymeric materials to remove flash from ring molded products.

The purpose of the invention is to improve the quality of processing products.

FIG. 1 shows a sectional machine; side view; in fig. 2 is a view A of FIG. one; in fig. 3 is a view B in FIG. one.

To implement the method, a device is used which contains a bed 1 and a working chamber 2 fixed thereto, formed by a vertical plate 3 and side panels 4, 5, one of which has a working chamber cover 6 on the hinges provided with stops 7 for pressing the stack of rings against the vertical plate 3. In the upper part of the working chamber 2 on the vertical plate 3 on the shafts 8, 9 and 10 are mounted for rotation from the engine 11 through the chain 12 supporting rollers 13, 14 and pressure roller 15. The rollers 13-15 are equipped with asterisks 16-18 . The pressure roller 15 is mounted to move in the slits 19 relative to the support rollers 13, 14 by means of a pivoting lever 20 and a pneumatic cylinder 21.

To ensure the constant tension of the chain 12 during operation, the machine is equipped with a tension sprocket 22 mounted for movement relative to the machining rollers 23 using a lever 24 and a pneumatic cylinder 25. There is an asterisk 26 on the motor shaft. Chain 12 and sprockets 16, 17, 18 , 22 and 26 form a closed chain loop.

In order to remove dust in the working chamber there is a nozzle 27, and a capacity 28 is installed under the working chamber to remove the flap removed from the products. For this purpose a mechanized transport system can also be used.

The method is carried out as follows.

A stack of annular molded products 29 is placed between the pressure and support rollers with a helical cutting part on their components, the working chamber lid is closed and the rollers are activated, the rotation speed of one of the support rollers is chosen to be lower than the rotation speed of the other support roller. At this time, the pneumatic cylinder 21 is switched on, which moves the pressure roller 15 with a stack of articles 29 inside the working chamber 2 of the machine to the top 1437239

0

five

0

five

0

five

0

five

the new part, as a result of which the roller 15 presses the stack of ring products 29 to the rotating support rollers 13, 14, there is a high-quality and efficient removal of flash from the surface of the ring products. The oblum removed from the annular products is dropped by the rollers 13, 14 and 15 into the lower part of the working chamber 2 and then falls into a container 28 or a mechanized transport system installed under the working chamber, and the dust generated during operation is sucked through the nozzle 27.

So how is the rotation speed of one of. the support rollers are smaller, this support roller slows down the rotation of the machined ring products, regulates their rotation at a lower circumferential speed than that which the drive and pressure rollers and the second support rollers tend to impart to the ring products, while the circumferential speed with which the machined ring products are rotated, as a result of which the bluff from the surface is cut off by screw teeth on the surface of the machined x rollers at the point of contact with the surface of the processed ring molded products.

In addition, since the pressure of the helical cutting part on the surface of the processed products is insignificant and reliable self-cleaning of the processing rollers is provided, the proposed machine can be used to remove flashs from ring-shaped molded products immediately after forming still hot and therefore having a soft surface. technological capabilities of the machine, as well as reduce power consumption.

Claims (1)

Invention Formula The method of removing obli from the inner and outer surfaces of annular molded products, in which a stack of annular products is placed between the presser and support rollers with a cutting part on their forming, include rollers of rotation of the rollers, characterized in that in order to improve the quality of machining of products, the rotation of one of the support rollers is chosen less than the speed of rotation of the other support roller. Fi.2 View 6 fig.Z