Tube expander with positioning structure

Abstract

A tube expander with positioning structure includes a base, a tube clamp, a positioning device, and an adjusting thread rod. Therein, the base has a body and a neck. The body has a guiding groove and the neck is inserted with a rotating thread rod capable of vertically moving. An expanding cone facing the guiding groove is on one end of the rotating thread rod. The tube clamp having tube bores is slidingly disposed in the guiding groove. The positioning device is on one side of the guiding groove, thereby engaging and positioning the tube clamp and positioning the tube bores under the expanding cone. The adjusting thread rod is pivotally disposed on the body for fastening the tube clamp.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to tube expanders, and more particularly, to a tube expander provided with a positioning structure.[0003]2. Description of the Related Art[0004]When a tube is to be connected to extend or to be installed in a curved section, a tube expander is utilized in a tube expanding process. In most tube expanders, a tube member is usually clamped and fastened by a clamp, and the clamp is placed in a guiding groove of the tube expander, while a cone head of the tube expander is in alignment with the tube member, whereby a handle of the tube expander is rotated for driving the cone head to expand the end part of the tube member, thus expanding the tube orifice of the tube member into a cone shape for facilitating the tube connecting operation.[0005]However, the above mentioned tube expander is not provided with any positioning structures for positioning the clamp. Although an adjusting thread rod is pr...

AI Technical Summary

Benefits of technology

The present invention provides a positioning device for a tube clamp that allows for accurate positioning of each tube bore under the expanding cone without damaging the tube member during the expanding operation. This saves time and reduces man power costs.

Problems solved by technology

However, the above mentioned tube expander is not provided with any positioning structures for positioning the clamp.

Under the circumstance, if the user still uses the cone head to expand the orifice of the tube member, the tube member tends to be damaged easily.

As a result, known tube expander requires additional man power and time cost for accurately aiming the cone head at the orifice of the tube member for preventing such damage from happening, thus failing to meet the demand of being conveniently operated.

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