JPH023464Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a wire feeding tool used when inserting a long and thin wire into a cylindrical body or the like.

(Prior art) For example, in an automatic arc welding machine, when the electrode wire is consumed, a new reel wound with the electrode wire is attached to the reel stand, and the end of the electrode wire unwound from the reel is placed on the reel stand. It is necessary to feed the wire to the automatic wire feeding device by inserting it into a hollow guide cable disposed between the wire and the automatic wire feeding device in front.

In this case, conventionally, the end of the electrode wire unwound from the reel was manually inserted into the guide cable.

(Problems to be Solved by the Invention) The conventional method described above has the disadvantage that the electrode wire is manually inserted into the guide cable, which requires time and effort.

The object of the present invention is to obtain a novel wire feeding tool that eliminates the above-mentioned drawbacks.

(Means for Solving the Problems) In order to achieve the above object, the present invention is constructed as follows.

That is, the shaft is rotatably inserted into a cylindrical holder,
One end of the shaft is exposed to the outside, a drive pulley is coaxially fixed to this part, and a lever arranged parallel to the holder can be swung to the holder via a fulcrum pin perpendicular to the axis of the holder. A driven pulley connected to the drive pulley and facing the drive pulley from the outer circumferential direction is rotatably provided at the swinging end of the lever, and a drive device for rotating the shaft is provided.

(Function) Since the present invention has the above structure, when the wire is interposed between the driving pulley and the driven pulley and the lever is operated in the clamping direction, the wire is moved by the driving pulley and the driven pulley. It will be pinched.

When the drive device operates in this state, the drive pulley is rotated via the shaft, and the wire is transferred to each pulley in a tangential direction.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In the drawings, Fig. 1 is a partially sectional side view showing an embodiment of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a partially sectional side view showing the second embodiment, and Fig. 4 is a partially sectional side view showing the third embodiment.
FIG. 2 is a side view of main parts showing an example.

In FIG. 1, 1 is a holder made by cutting a pipe material into a predetermined length.

An elongated shaft 2 passes through the holder 1, and its both ends are rotatably supported by bearings 3 attached to the left and right ends of the holder 1.

The left and right ends of the shaft 2 are exposed to the outside from the left and right ends of the holder 1, and a drive pulley 4 is attached to the left end of the shaft 2.
and a handle 5 constituting a drive device are fixed to the right end of the shaft 2.

The driving pulley 4 is attached coaxially to the shaft 2 and has a convex outer circumferential shape.

Further, levers 6 are arranged in parallel on the outside of the holder 1 and are swingably attached.

That is, the bracket 7 formed in a box shape is placed on the left side of the lever 6 formed long in the left-right direction.
The bracket 7 is fitted onto the outer circumference of the holder 1, and the two are rotatably connected to each other by a fulcrum pin 8 perpendicular to the axis of the holder 1.

A driven pulley 9 is rotatably attached to the left end of the lever 6. This driven pulley 9 is opposed to the aforementioned drive pulley 4 from its outer circumferential direction, and
The rotational axis of the driven pulley 9 is set to be substantially parallel to the rotational axis of the driving pulley 4 when its outer circumference approaches the outer circumference of the driving pulley 4.

Further, the outer periphery of the driven pulley 9 is formed into a concave shape, so that a convex portion formed on the outer periphery of the driving pulley 4 can be fitted therein.

Note that 10 is a coil spring installed between the holder 1 located on the right side of the fulcrum pin 8 and the lever 6, and constantly biases the lever 6 to swing in the direction of counterclockwise rotation (arrow A) in FIG. , for pressing the driven pulley 9 toward the driving pulley 4.

Reference numeral 11 denotes a positioning tool, and as shown in FIGS. 1 and 2, the rear end (right end) is fixed to the lower side of the bracket 7, and the front end (left end) is fixed to each roller 4, 9. The U
It is curved into a letter shape and is used to position the front end of the holder 1 at the mouth of the cylindrical body 12 through which the wire is inserted.

Note that the positioning tool 11 has a stay 11a fixed to the holder 1 in a longitudinally intermediate portion thereof so as to protrude downward, as shown by the imaginary line in FIG.
1a may be fixed, for example, to a frame 13 of an automatic arc welding machine (not shown), thereby positioning the front end (left end) of the holder 1 at the mouth of the cylindrical body 12.

Next, the state of use of the above embodiment will be explained.

First, the right part (tip part) of the lever 6 is pressed in the direction of the holder 1 and swung in the direction of arrow A in FIG. intervene.

Next, when the pressure on the lever 6 is released, the lever 6 is swung in the direction of arrow A in FIG. It will be held in place.

In this state, the positioning tool 11 is locked to the mouth of the cylinder 12, and the handle 5 is rotated in the drawing direction.

Then, the shaft 2 and hence the driving pulley 4 are rotated in the feeding direction, and the wire rod 14 is moved to each pulley 4 and 9.
It will be transferred toward the cylindrical body 12 while being held between the two.

FIG. 3 shows a second embodiment.

In this device, a swing shaft 15 is fixed to the upper part of a bracket 7 rotatably connected to the holder 1 so as to protrude to the left, and a driven pulley 9 similar to the above is mounted on the left end of the swing shaft 15. The lever 16 is fixed to the lower part of the bracket 7 so as to protrude to the right, so that when the lever 16 is swung in the direction of arrow A, the driven pulley 9 approaches the drive pulley 4.
On the contrary, this embodiment differs from the first embodiment in that the driven pulley 9 is moved away from the drive pulley 4 when the lever 16 is swung in the direction of arrow A.

Moreover, FIG. 4 shows a third embodiment.

This device has a wide annular protrusion 4a and a narrow annular protrusion 4b formed in parallel on the outer periphery of a driving pulley 4 fixed to a shaft 2, and the outer periphery of a driven pulley 9 rotatably attached to a lever 6. a wide annular groove 9a into which the annular protrusion 4a is fitted, and the annular protrusion 4b.
A small-width annular groove 9b is formed in parallel to fit the large wire rod 9a and the small diameter wire rod 9.
This differs from the first embodiment described above in that it is selectively or simultaneously fed out.

Note that the shaft 2 may be rotated by a motor.

(Effects of the invention) As is clear from the above description, the present invention includes a cylindrical holder, rotatably supports the shaft to which the drive pulley is attached at the inner circumference of the holder, and A lever to which a driven pulley is attached is swingably supported at the part, and by swinging the lever, the wire is held between the driven pulley and the driving pulley, and by rotating the shaft, the driving pulley is rotated. Since the clamped wire rod is transferred, the structure is simplified and the work of inserting the wire rod into the cylindrical body etc. can be carried out quickly and easily.

[Brief explanation of drawings]

Fig. 1 is a partially sectional side view showing an embodiment of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a partially sectional side view showing the second embodiment, and Fig. 4 is a partially sectional side view showing the third embodiment. FIG. 1...Holder, 2...Shaft, 3...Bearing,
4... Drive pulley, 5... Handle (drive device),
6... Lever, 7... Bracket, 8... Fulcrum pin, 9... Driven pulley, 10... Coil spring, 1
1... Positioning tool, 12... Cylindrical body, 13... Frame, 14... Wire rod.

Claims (1)

[Scope of utility model registration request] A shaft is rotatably inserted into a cylindrical holder, one end of the shaft is exposed to the outside, a drive pulley is coaxially fixed to this part, and a lever arranged parallel to the holder is perpendicular to the axis of the holder. A driven pulley is rotatably connected to the holder via a fulcrum pin and faces the driving pulley from an outer circumferential direction thereof, and a driven pulley is rotatably provided at the swinging end of the lever, and a drive device for rotating the shaft is provided. A wire rod feeding tool.