RU58066U1 - DEVICE FOR PREPARING ABRASIVE MASS - Google Patents

Abstract

Usage: abrasive and rubber industry, the design of the device for obtaining abrasive mass Objective: to increase productivity. The essence of the utility model: the device contains rolls. Along the roll 1, on which the abrasive mass is wound, there is a guide 4 with a knife 2 mounted on it, located in the housing 3. The guide 4 and the housing 3 are made in the form of a screw pair. Screw pitch where D is the diameter of the roll, d is the diameter of the screw f is a coefficient equal to 1 ÷ 5, l is the width of the knife, and B is the width of the roll barrel. Positive effect: increase in productivity by 20%.

Description

The utility model relates to the abrasive industry, in particular to devices for the preparation of abrasive mass intended for rolling and receiving blanks of grinding, polishing and cutting wheels.

A device for preparing an abrasive mass, comprising rolls of mixing rollers and a knife, the width of which is equal to the length of the barrel roll / 1 /. The wound semi-finished product is cut in the deformation zone along the entire length of the roll barrel.

The disadvantages of this device are large pieces of the semi-finished product, which affects the quality of the mass and the tool made from it.

The closest in technical essence and the achieved effect to the proposed solution is a device for preparing abrasive mass containing two rolls installed in the frame, a knife with an additional longitudinal cutting tool mounted on it / 2 /. The knife is movable along the roll barrel and installed in the guide. After winding the abrasive mass on the rolls with an additional cutter, the measured part of the abrasive mass is separated by a width equal to the width of the movable knife, after which the abrasive mass is cut from the roll by a knife in the form of a rectangular strip with a length of 2ПR. Then the knife is moved along the roll, and the cycle repeats.

The disadvantage of this device is the low performance.

The objective of the proposed solution is to eliminate this drawback, namely increasing productivity.

This object is achieved in that in a device for preparing abrasive mass containing two rolls installed in the bed, a knife mounted in a housing mounted to move along the roll barrel along a guide, according to the proposed solution, the knife body and the guide are made in the form of a screw pair, while the pitch of the screw pair

where D is the diameter of the roll,

d - screw diameter

f is a coefficient equal to 1 ÷ 5,

l is the width of the knife

B is the width of the roll barrel.

The fact that the knife body and the guide are made in the form of a screw pair with the claimed step will allow for continuous removal of abrasive mass from the roll during its rotation, which will increase the productivity of the device.

An increase in the step of the more proposed dependence leads to heterogeneous mixing of the abrasive mass and an increase in the loads on the drive of the device, a decrease in less than this dependence will lead to overheating of the abrasive mass, which will cause a defect.

The coefficient f = 1 ÷ 5 is equal to the number of passes along the roll barrel in the process of cutting abrasive mass.

The proposed device for the preparation of abrasive mass is illustrated in figure 1 ÷ 2, where figure 1 shows a diagram of the device at the time of cutting, figure 2 is a view a of figure 1.

The device contains two rolls 1, a knife 2 mounted in the housing 3. The housing 3 is mounted on the guide 4. The housing 3 and the guide 4 are a screw pair.

The device operates as follows.

After the abrasive mass evenly covers the front roll 1, the drive (not shown) is turned on to rotate the guide 4. When the guide 4 is rotated, the housing 3 with the knife 2 translates along the roll barrel 1, constantly cutting off the abrasive mass from it. The mass can be cut in one pass, or in several, depending on its thickness. For this, after the first pass, the drive changes the direction of rotation of the guide 4, and the abrasive mass is removed in the opposite direction.

According to the proposed solution, CJSC “RUSSI”, Chelyabinsk, made a technical design of a device for preparing abrasive mass. The diameter of the roll on which the abrasive mass is wound D = 550 mm, the diameter of the screw d = 40 mm, the width of the roll barrel B = 1500 mm, the width of the knife l = 300 mm, the pitch of the screw pair t = 6 mm. The abrasive mass is cut in two passes, i.e. f = 2.

As calculations showed, the performance of the proposed device will increase by 20%.

The proposed device will find application in the abrasive and rubber industry.

Information sources

1. RF Patent №2198781, M. Kl ⁷ 24 D _^18/00, A process for preparing an abrasive molding vulcanite mixture of 20.02.2003.

2. RF Patent №2191102, M. Kl ⁷ B 24 D _^18/00, A process for preparing an abrasive molding vulcanite mixture of 20.02.2003.

Claims (2)

1. Device for the preparation of abrasive mass, containing two rolls installed in the bed, a knife mounted in a housing mounted to move along the roll barrel along a guide, characterized in that the knife body and the guide are made in the form of a screw pair. 2. The device according to claim 1, characterized in that the pitch of the screw pair

where D is the diameter of the roll; d is the diameter of the screw; f is a coefficient equal to 1 ÷ 5; l is the width of the knife; B is the width of the roll barrel.