DE2827365A1 - Hollow conveyor supporting roller - has end wall with bearing cup formed by inverting end of body - Google Patents

Abstract

The supporting roller for a conveyor belt or roller track, has walls at the opposite ends of a cylindrical body and in which cups are formed to take bearings, the body being supported on a spindle. One of the walls (2) at least including the cup (3), is formed by inverting the end of the boxy (1). The body and both walls can be a single seamless component, and both walls can be shaped at the same time. The shaping can be effected under strictly localised heating, typically inductive.

Description

"Conveyor roller"

The invention relates to a support roller for a conveyor belt or a Roller conveyor at the two ends of a cylindrical shell body, end walls has, in which capsules are designed to accommodate a bearing, with which the Sheath body is mounted on an axis.

The production of these idlers has been made from tubes from which the shell bodies are cut, and flat iron, from which the end walls are punched and be pressed. The end walls are used at the shell body ends and welded to the shell body.

The flat iron used as the starting material for the end walls is used in the form of coils for storage and manufacturing reasons. The coils have the width of the diecuts, increased by at least the thickness of the material on each of the both sides.

This creates 5 - 7% waste.

The object of the invention is to reduce waste.

According to the invention it is provided that in a support roller type mentioned at least one end wall. including the capsule is shaped as an eversion of the shell body end.

The production of such a front wall is already a round one Object, the jacket body end, and thus avoids the waste that comes with cutting out round blanks from coherent, flat raw material connected is.

This advantage is already evident in a conveyor roller with only one the shell body end shaped end wall, although it is regarded as the normal case is to form both end walls according to the invention from the shell body end.

The advantage of material savings is also achieved when when the shell body end together with the end wall formed from it an originally separate and then welded to the actual shell body part is how according to the state of the art, the front wall alone.

However, it is possible according to the invention and is considered to be particularly advantageous Proposed development of the invention, the jacket body and the two end faces as a single, seamless body.

This eliminates the need for welding and the precise adjustment required beforehand and holding the parts to be welded.

The shaping of the two end walls can also have a further configuration the invention take place at the same time on the same workpiece, so that the manufacturing process is tightened. But above all, the casing body with its two end walls to a monobody consisting of uninterrupted material with all of the following beneficial properties.

About the deformation of the shell body end into the end wall and the capsule To accomplish, one can locally narrowly limited inductive heating and im In connection with these, also apply cooling.

The deformation tools to be used result from the circumstances. In essence, one becomes the shell body end first in a corresponding die under compression as much as possible and with towards the end taper increasing the angle of inclination and then put it back into the with a punch Press in the casing body, i.e. turn it inside out. In interaction with it or afterwards you can also use a counter tool. With a simultaneous shaping of the two end walls that do not require the counter-tool to be introduced from the other side allows an expandable counter-tool from the outside of the casing body end to be introduced.

If you want to use a counter tool brought in from the other side do not do without, there is also the possibility of including the casing body End walls in two parts, e.g.

Halves, welded together.

The invention is illustrated below with reference to drawings.

Fig. 1 shows the end of a support roller jacket in an axial longitudinal section.

FIGS. 2 - 4 show the development phases of the support roller jacket according to FIG Fig. 1.

A cylindrical support roller shell 1 is at its end to an end wall 2 bent inwards, in which a capsule 3 is formed for receiving a ball bearing is.

The deformation has been carried out roughly as follows: The one with the corresponding Excess length of a pipe cut blank of the idler jacket is with his The end is pushed into a die 4 after it has been heated. The end is thereby tapered and curved inward. (Fig. 2).

The end formed in this way is then only placed on the through the Row of arrows 5 in Fig. 2 marked section heated and in an annular shape Area 6 around the opening 7 is left cool. Then the end is with a stamp 8 pressed in, the annular region 6, which has remained cooler as an annular end wall at the end of the resulting indentation 9 is retained. (Fig. 3).

Then only that indicated by the row of arrows 10 in FIG. 3 is shown the outer area of the indentation 9 is heated. Then using one in the opening 7 introduced, expandable counter-tool 11, the indentation 9 back somewhat pressed outwards, with the heated outer area of the indentation 9 still expresses a little radially inward and thus on the one hand the end wall 2 further pronounced - and on the other hand the essentially cylindrical capsule 3 is formed will.

(Fig. 4).

The inner wall of the capsule 3 can finally be machined get the exact shape and location required.

The use of the ball bearing in the capsule 3 and the storage of the support roller casing 1 on its axis passing through the opening 7 can then be the same as until now.

Claims (8)

Claims 1. Support roller for a conveyor belt or a roller conveyor, which has end walls at the two ends of a cylindrical casing body, in which capsules are designed to accommodate a bearing, with which the casing body is mounted on an axle, that is, at least one end wall (2) including the capsule (3) as an eversion of the casing body end (1) is shaped. 2. Support roller according to claim 1, characterized in that the jacket body (1) and the two end walls (2,3) are a single, seamless body. 3. A method for producing a support roller according to claim 2, characterized characterized in that the two end walls (2,3) are formed at the same time. 4. A method for producing a support roller according to claim 1 or 2, in particular the method according to claim 3, characterized in that the end wall (2,3) or end walls (2,3) using locally narrowly limited, in particular inductive, heating (5; in) is or are formed. S. The method according to claim 4, characterized in that the end wall or end walls using locally limited cooling is formed or will. 6. The method according to claim 4 or 5, characterized in that the Sheath body end is tapered in a die (4) with upsetting, preferably with an increasing angle of inclination towards the end, and then back with a punch (8) in the Sheath body is pressed in. 7. The method according to any one of claims 4-6, characterized in that that the end wall (2,3) or end walls (2,3) using a counter tool (11) is or are molded. 8. The method according to claim 7, characterized in that the end wall (2,3) or end walls (2,3) using a hook-like, preferably expandable, Counter tool (11) is or are formed, which from the outside into the -Mantle body end is inserted.