JPS598813Y2 - wire straightening device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a device for correcting the bending tendency of a wire.

In conventional devices of this type, even if the wire straightening has been properly adjusted, it must be readjusted when the wire is replaced.

The present invention eliminates the drawbacks of the prior art, and as long as the wire diameter is the same, the proper position of the wire straightening is always maintained, there is no need for readjustment every time when replenishing due to wire consumption, and the position of the straightening roller can be maintained. This is done using the reaction force of wire straightening.

In order to satisfy the above requirements, the present invention is such that a lever supporting one of a plurality of wire straightening rollers is rotatably fixed, and the specific structure will be explained with reference to the illustrated embodiment.

In the figure, reference numeral 1 denotes a wire winding frame, and the wire 2 is straightened from this winding frame 1 by straightening rollers 3, 4, 3', and sent out via a feeding roller 5 and a pressure roller 6.

In order to straighten the wire 2, a straightening roller 3,
3' are pivoted on the same horizontal line with a required spacing between them, and a movable lever 8 equipped with the straightening roller 4 is mounted by a shaft 7 slightly below between the two straightening rollers 3 and 3'.

The straightening roller 4 is rotatably attached to a movable lever 8, and straightens the wire 2 together with the straightening rollers 3 and 3'.

In order to remove the bending tendency of the wire 2, when the positional relationship in which the wire 2 is pulled out from the winding frame 1 is as shown in FIG. Since it maintains the state it was in when it came off, both correction rollers 3 and 3'
The wire 2 is bent downward from the correction B of the correction roller 3.

Therefore, in order to correct the curvature of the wire 2, the correction point A of the correction roller 4 must be located above the correction roller B.

On the mounting plate 11, a shaft 13 having a handle 15 is fixed to the mounting shaft 13 so as to be rotatable in the X and Y directions in FIG. A knob 9 that supports the movable lever 8 and is integrated with the adjustment screw 14
By turning the adjustment screw 14, the adjusting screw 14 moves forward and backward, finely adjusting the movable lever 8 up and down, and adjusting the position of the correction roller 4.

12 is a stopper that receives the female threaded body 10.

When replacing the wire 2, when the shaft 13 is rotated in the Y direction, the upper end of the adjustment screw 14 will rotate upward, moving the movable lever 8 upward once, and then the adjustment screw 14 will rotate downward. At the same time, the restraint state of the movable lever 8 is released, so the movable lever 8 is rotated in the N direction by its own weight or a spring, and the straightening point A of the straightening roller 4 is the same as the straightening point A of the straightening roller 3. Since the wire 2 moves from point B to the lower side shown in FIG. 2, the passage for the wire 2 is opened, and the wire 2 can be easily attached.

At the same time, the position of the adjusting screw 14 is maintained.

When setting the wire, move the movable lever 8 in the X direction,
The apex P of the adjustment screw 14 is a position K beyond the point O on the vertical line.
At this point, the female screw body 10 is stopped by the stopper 12, and the correction position is always kept constant unless the knob 9 is surrounded.

When straightening the wire, a reaction force R necessary for straightening the wire acts on the straightening roller 4 and the movable lever 8, so the apex P of the adjusting screw 14 is held at point K, and when it crosses point O, the restrained state is released. It never happens.

Since the present invention has the above structure, the wire correction position is always kept constant, and if the diameter and material of the wire are the same, there is no need for readjustment when replacing the wire.

In addition, the correction roller 4 does not get in the way when replacing the wire, making the replacement work easy.

Furthermore, although the wire straightening adjustment position is held by the reaction force of the wire straightening force, other holding means are not required.

[Brief explanation of the drawing]

The drawings show an embodiment of the wire straightening device according to the present invention, in which Fig. 1 is a schematic diagram, Fig. 2 is a front view of the main parts, and Fig. 3 is a schematic diagram.
The figure is a side view of the same as above. Explanation of symbols, 2...Wire, 3.3', 4...
...Correcting roller, 7...Axis, 8...
・Movable lever, 9...Knob, 10...
Female body, 11...Mounting plate, 14...
Adjustment screw.

Claims (1)

[Scope of utility model registration request] A wire straightening device in which the straightening roller is attached to a movable lever pivotally connected to a mounting plate so that at least one of the plurality of straightening rollers can be removed from the wire straightening path, the straightening roller supported by the movable lever. an internally threaded body rotatably supported via a mounting shaft fixed to the mounting plate substantially directly below the body, an adjustment screw screwed into this female body, and rotation of the female body. and a stopper for restraining the wire, and after the apex of the adjustment screw passes over a vertical line of the mounting shaft, the female body comes into contact with the stopper to correct the wire. Orthodontic device.