Device for cutting the remaining length of the tongue of a clamping ring

The disclosed device is intended to improve the cutting finish and reduce the time used to cut the remaining body portion after the standard cable tie has been finally tightened.It comprises adding a blade in the cable tie head in order to cut the remaining body portion as a result of the torsion of said body portion.It is applicable to any production process wherein the remaining body portion has to be removed by using a manual or automatic cutting tool.

FIELD OF THE INVENTION

Current invention is applicable in several industrial fields where the standard cable ties have an extensive use as: car industry, home appliance machines, electrical facilities, pipe routings for water, air conditioning in buildings, etc.

STATE OF THE ART

There is no background of a cutting device incorporated to the head for removing the over length of a standard cable tie such as the ones patented on May 9, 1972 in the United States (U.S. Pat. No. 3,660,869) which is considered to be the closest prior art.

EXPLANATION

The current invention consisting of adding a blade to the head of the standard cable tie that enables to remove the remaining body portion by twisting it against the blade.

The blade must be one able to cut the plastic of the body portion without big effort. The blade class as the ones used in razor machines.

It is not needed a blade thickness nor a quality as high as the ones used in razor machines, since it will not be in contact with water and they will perform one single cut in their life cycle. Due to this, the cost of the blade can be cheaper.

The fixing of the blade to the head needs to be robust, it can be performed by a riveting or integrating it to the injection tooling itself.

Product main advantages:

1. Avoid the need of using a cutting tool for removing the body over length after the cable tie is tightened. This drives to a shorter assembly time, and to have one free hand for performing any other operation.

2. Improve the cut quality. In this way it is avoided the risk of injuries due to remaining withsharp edges, achieving an improved product or facility finishing.

INVENTION EMBODIMENT

The blade to the cable tie must be incorporated in an automatic process that will lead to a final product of low manufacturing cost.

There are several ways to fix a blade to plastic injected part. The industrial field where this operation is common is in the razor machines, where the more extensively used technique is to plastic rivet a pin, part of the head, that goes through an opening that the blade has (see FIG. 3 ).

Other technology is to incorporate the blade during the injection of the cable tie. To do so, a holder inside the tool is needed that will keep the blade in the needed. It is also possible to fix the blade to the head in a subsequent process, through an opening that the head has and with retention ribs to hold it inside the opening.