DE19615522A1 - Device for separation of waste piece from pipe, especially pipe bend - Google Patents

Abstract

Clamping devices are provided for the pipe (1) and waste section (2) and a cutting disc (6) is placed in the plane of intended cut (3) and rotated by a shaft (7). The diameter of the disc is smaller than the clear width of the pipe. The shaft moves parallel to the plane of separation on such a track that the disc penetrates the wall of the pipe on the whole circumference. The rotational axis of the shaft may run perpendicular to the plane of separation.

Description

The invention relates to a device for separating a piece of waste from a pipe, especially a pipe bend.

The separation of pipe sections has always been problematic. this concerns especially the case where a pipe bend is manufactured. Becomes bent a pipe into a bend, for example a bend from 90 °, the two end faces run at the open ends of the Pipe bend in planes that do not form an angle with the pipe bend axis Form 90 °, but deviate from it. In such cases, a small one Section of the elbow are separated so that the concerned End faces run at an angle of 90 ° to the pipe elbow axis.

The invention is therefore based on the object of specifying a device with which a piece of waste can be separated from a pipe, especially a piece of waste from a pipe bend.

This object is solved by the features of claim 1.

The invention is explained in more detail with reference to the drawing. This shows a pipe bend 1 with a pipe bend axis 1.1 . In the state shown, there is still a section 2 on the pipe elbow 1 which is to be separated as waste, namely along a parting plane 3 . The parting plane forms a right angle with the pipe elbow axis 1.1 .

The pipe elbow 1 is held by means of clamping jaws 4.1 , 4.2 . For the purpose of clamping, the two clamping jaws 4.1 , 4.2 can be moved in the direction of the double arrows 4.3 , 4.4 .

The same is the section 2 to be separated, thus the future waste, clamped by means of jaws 5.1 , 5.2 .

The separating device comprises, as an essential element, a cutting disc 6 which is driven by a shaft 7 . The shaft 7 can accordingly rotate in the direction of arrow 7.1 . It is also - together with the cutting disc 6 - in the direction of the double arrow 7.2 in the elbow 1 and extendable. Finally, it can be moved along the double arrow 7.3 .

As can be seen, the method runs in the direction of the double arrow 7.3 such that the cutting disc 6 is moved in the parting plane 3 . The shaft 7 is moved on such a path that the cutting disc 6 penetrates the wall of the pipe bend 1 over its entire circumference. In this way a clean cut is made and section 2 is cut off.

The whole process can be described as follows:

• 1. First, the pipe elbow 1 is clamped with the section 2 still attached to it - see the clamping jaws 4.1 , 4.2 and 5.1 , 5.2 .
• 2. The cutting device with cutting disc 6 and this driving shaft 7 is inserted into the pipe bend from the side of the pipe section 2 until the cutting disc 6 is in the parting plane 3 .
• 3. The cutting device, comprising the cutting disc 6 and the shaft 7 , is put into circulation - see arrow 7.1 . Simultaneously or subsequently, the separating device executes a radial movement - see double arrow 7.3 . The actual cutting process then runs. It is cut without cutting.
• 4. Subsequently, ie after the severing has taken place, the shaft 7 is stopped and the separating device - comprising the cutting disc 6 and the shaft 7 - is moved to the right in the illustration.
• 5. The jaws 5.1 , 5.2 for section 2 , which is now the waste, are released so that the waste 2 can freely fall down into a tub, not shown.
• 6. Finally, the jaws 4.1 , 4.2 for the remaining elbow 1 are released .

The invention can be used, for example, in the automotive supply industry apply. Pipes have to be added to exhaust and silencer systems be cut to bends at the bend outlet. This is usually done by sawing.

The separation method according to the invention is based on the trimming of Cans. It is suitable for the chipless separation of Sections of metal pipe elbows. It can also be very Cut through thin-walled pipes that have a wall thickness of, for example have only 0.5 mm. The invention is also for use with the smallest Suitable pipe diameters, for example for diameters from 20 mm.  

By applying the invention, the process of removing Avoid chips.

Finally, this can be done by choosing an appropriate tool Carry out forming using beads.

Claims (2)

1. Device for separating a piece of waste from a pipe, in particular from a pipe bend ( 1 );

• 1.1 each with a device ( 4.1 , 4.2 ; 5.1 , 5.2 ) of the pipe ( 1 ) or the waste piece ( 2 );
• 1.2 with a cutting disc ( 6 ) which can be placed in the cutting plane ( 3 ) and is supported by a rotatable shaft ( 7 );
• 1.3 the diameter of the cutting disc ( 6 ) is smaller than the inside width of the tube ( 1 );
• 1.4 the shaft ( 7 ) can be moved parallel to the parting plane ( 3 ) on such a path that the cutting disc ( 6 ) penetrates the wall of the tube ( 1 ) over the entire circumference.

2. Device according to claim 1, characterized in that the axis of rotation of the shaft ( 7 ) extends perpendicular to the parting plane ( 3 ).