JPH0126702Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a device for securing the starting end of a welding wire to a winding frame, and in particular to a device that can securely secure the starting end of a welding wire to a winding frame without bending the tip. Related.

(Prior Art) When winding a welding wire onto a winding frame such as a spool or bobbin in an aligned or traverse manner, it is necessary to fix the starting end of the wire to a rotating winding frame prior to winding. Conventionally, various methods of securing the tip of the wire have been proposed, and a typical example thereof is shown in FIG.

In the embodiment shown in FIG. 6, the tip of the wire W is bent into a hook shape, and that part is bent into a cylindrical drum D of the winding frame S.
The wire W is inserted into a wire locking opening O provided in the opening O, and the wire W is locked in the opening O.

(Problem to be solved by the invention) In the conventional wire fixing means described above, the part beyond the bending point A is bent and stretched in the direction of the arrow due to the tensile force applied to the wire at the start of actual winding. ,
There is a drawback that it comes off from the locking end. Furthermore, when winding a flux-cored wire, cracks may occur at the bending point A, and the wire may break due to the tensile force of the wire at the start of winding, making the winding operation impossible. As described above, the conventional wire fastening means is insufficient in terms of secure fastening, and there is a risk that the wire may be cut.

(Means and effects for solving the problem) The present invention prevents the wire from being cut by fixing the wire with almost no bending, and also provides a means for fixing the starting end of the wire to the winding frame. By providing this, reliable fixing is possible. That is, the present invention provides a device for fixing a starting end of a wire inserted into an opening formed at the end of a drum of a reel for winding welding wire, in which a flange for attaching the reel near the opening includes: A wire locking pin is provided that is movable between a forward position that allows the wire to pass on the wire passing line and a retracted position that locks the wire without bending the wire. It is characterized in that a spring is attached and a pusher for advancing the locking pin is further installed outside the winding frame in the axial direction of the locking pin.

By configuring the present invention as described above, the starting end of the wire is inserted into the opening of the winding frame, and the leading end of the wire is gripped by a locking pin, or by inserting the wire into the pin and retracting the pin. It firmly clamps the wire.

(Example) The present invention will be described below based on an example shown in the drawings.

1 and 2 are a sectional view and a side view showing an example of the present invention. A winding frame 1 for winding a welding wire includes a winding drum 2 for winding a wire W;
It consists of flanges 4 fixed to both ends of the drum 2 in the axial direction. A wire locking opening 3 into which the starting end of the wire is inserted is formed near the flange at one end of the winding drum 2, and the winding frame is attached to the flange 4 on the side where the opening 3 is formed. A locking pin 5 for gripping the tip of the wire W is provided on the mounting flange 17 so as to be movable forward and backward in a direction intersecting the wire insertion direction.

As shown in the figure, this locking pin 5 is formed into a scissor-shaped halves that can be opened and closed with a shaft at one end, and the wire W can be gripped at its tip, and the pin 5 is expanded in the middle. A spring 6 is provided that applies force in the opening direction. Also, the pin 5
is accommodated in a cavity provided in the flange 17, and can enter and exit through a hole in a guide plate 7 fixed to the inner surface of the flange 17. Furthermore, a spring 8 is provided in the cavity to pull the pin 5 toward the outer surface of the flange 17 (in the direction opposite to the drum 2). In addition, a hole 9 is provided on the outer surface side of the cavity for accommodating the pin 5 of the flange 17.
is inserted to push out the pin 5.
In addition, the scissors part of the pin 5 is as shown in FIG.
It has a cutout to make it easier to insert the wire W.
Moreover, it has a rough surface so that it does not easily come off when the wire is grabbed.

FIGS. 3 and 4 show other embodiments of the present invention, which differ from those shown in FIG. 1 above in the structure of the locking pin, but are otherwise the same. i.e. pin 1
5 has a wire insertion hole 15 at the tip instead of a scissor shape.
The wire W inserted through the columnar structure is sandwiched between the guide plate 7 and the wire insertion hole 15A of the pin 15 and is fixed.

FIG. 5 shows equipment for inserting the starting end of the wire W into the opening 3 of the winding drum 2.
A and 11B are cutters that are raised and lowered by cylinders 12A and 12B, 13 is a wire holder with one end serving as a pivot point 14, and 16 is a wire slide cylinder connected to the holder 13.

Next, the operation of the illustrated example will be explained. When starting wire winding on a new winding frame 1 attached to the winding frame attachment flange 17, the cutter 11
The starting end of the wire W cut at A and 11B is
Cylinder 16 while being held by holder 13
is rotated in the direction of the reel 1 and inserted into the opening 3 of the drum 2. A locking pin 5 which is pushed by a pusher 10 into an open state is waiting inside the opening 3, and the tip of the wire W passes through this opened pin 5. Then Pushya 10
When the pin 5 is moved back, the pin 5 is also moved back by the force of the spring 8, and by sliding through the hole in the guide plate 7, the pin 5 shifts to the closed state and clamps the tip of the wire. In the pin 15 shown in FIG. 3, the tip of the wire is inserted into the wire insertion hole 15A, and by retracting the pin 15, the wire is clamped between the guide plate 7 and the pin at the wire insertion hole 15A.

In this way, the wire W is firmly fixed within the drum 2 by the pin, and the winding operation is started in this state.

(Effects of the invention) As explained above, according to the invention, the starting end of the welding wire can be quickly and firmly clamped to the reel, and the tip of the wire can be bent unlike conventional methods. Because there is no
There is no need to worry about wire breakage. Furthermore, the present invention has made it possible to completely automate the wire winding operation.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of the position of the wire fastening device according to the present invention, FIG. 2 is a schematic diagram showing the relationship between the wire and the pin in the example of FIG. 1, and FIG. 4 is a cross-sectional view showing an example; FIG. 4 is a schematic diagram showing the relationship between the wire and the pin in the example of FIG. 3;
The figure is a schematic view showing the equipment used to insert the wire into the winding frame, and FIG. 6 is an explanatory view showing a conventional wire fastening mode. W...Wire, 1...Reel frame, 2...Drum, 3
... Wire locking opening, 4 ... Winding frame flange,
5, 15... Locking pin, 6... Spring, 7... Guide plate, 8... Spring, 9... Hole, 10... Pusher, 11... Cutter, 12, 16... Cylinder, 13... Wire holder, 14... Rotating fulcrum, 17... Flange for mounting the winding frame.

Claims (1)

[Scope of utility model registration request] In a device for fixing a starting end of a wire inserted into an opening formed at the end of a drum of a reel for winding welding wire, a wire is inserted into the reel attachment flange near the opening on the wire passing line. A wire locking pin is provided that is movable between a forward position that allows the wire to pass through and a retracted position that locks the wire without bending the wire, and a spring for retracting the wire is attached to the locking pin. A device for fixing a starting end of a welding wire to a winding frame, characterized in that a pusher for advancing the locking pin is installed outside the winding frame in the axial direction of the locking pin.