JPS6221684A - Winding method for welding wire - Google Patents

Abstract

PURPOSE:To improve the productivity by winding the winding drum of spool to a winder then inserting the leading edge of wire into the winding drum and securing thereafter driving winder to wind the wire and removing the spool thereby eliminating the necessity for machining the leading edge of wire. CONSTITUTION:A spool S is mounted to a winding drum 2 to insert the leading edge of wire 18 through a cutting 15. A wire guide 19 having a wedge section at the tip will push open a block 16 against a spring 17 to insert the leading edge of wire 18 thus to secure the leading edge of wire 18 by means of a block 16 through function of spring 17. Then a winder is driven to wind the wire 18 sequentially. Upon finish of winding, the end of wire is cut to remove the spool S and to stop the leading edge 18a of wire 18 to the winding drum rib 1a of spool S while folding. In the meanwhile, next spool S is mounted on the winder to continue the work.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention consists of 1. A wire drawn to the final wire diameter in the manufacturing process of CO□ welding wire, which is drawn into a double-flange cage shape using a winding machine. This invention relates to a method of winding a wire around a spool.

(Prior Art) A typical example of the cage-shaped spool S is shown in FIG. 9, which includes spool elements a, b, c, etc. formed by bending a single metal wire (usually a steel wire) 1. - A plurality of spool elements are arranged in a circular shape, and the radial rims of adjacent spool elements are joined to each other to form a spool, and the winding drum around which the wire is wound is arranged at approximately equal intervals. Axis-parallel wire rod 1
a (hereinafter referred to as the winding trunk rib).

The metal wire 1 has an insulating coating film such as baked resin on its surface for insulation.

In this cage-shaped spool (hereinafter referred to as spool), CO
2. When winding the welding wire using a winder, the starting end of the wire to the spool S must be securely secured so that it will not come off the spool even if the winding loosens during welding. If the stopper comes off the spool S and comes into contact with a grounded steel material, there is a risk of a short-circuit accident.

Therefore, conventionally, the starting end of the wire is stopped by the means shown in FIG. 10, and then winding is carried out.

In FIG. 10, reference numeral 2 denotes a winding drum on the winding machine side, which is divided in the radial direction so as to be able to expand and contract radially outward and outward, and has flanges 3 at both ends.

The spool S is inserted and set into the winding drum 2 from the direction of the drum axis, and at the beginning of winding, the wire tip 4 is preformed into a hook shape, and the spool S is inserted through the guide 5 and hooked onto the winding drum rib 1a. It is wound in the direction shown by arrow 6.

(Problems to be Solved by the Invention) According to the conventional example shown in FIG. 10, all of the wire tension F applied at the beginning of winding is concentrated on the winding body rib 1a, so that the hook-shaped wire is formed as shown in FIG. The shape of the tip 4 is elongated (especially noticeable when the diameter is small), and the gap W, which was initially narrower than the rib diameter, becomes wider as shown in the figure W, which may cause breakage, and short circuits due to breakage. There is a risk that the purpose of prevention will not be achieved.

Further, since the load is concentrated on one point of the rib la, the insulating coating film 1b on this surface is torn, which becomes a cause of a short circuit.

For this reason, as shown in FIG.
It is conceivable to form the tip 4 of the wire into a hook shape, form a curvature 8 that engages with the stepped portion 7, and then wind the wire.

The winding method shown in FIG. 12 suppresses elongation of the wire tip 4 and reduces the initial tension at the time of winding by feeding a certain amount of wire at the same time as winding to reduce the winding tension to the winding drum 2 side as much as possible. This is superior to the conventional example shown in FIG. 1O.

However, the shape of the wire tip 4 as shown in the figure (it takes time to shape it, and it is necessary to start slowly to prevent the insulation coating film 1b from peeling off at the beginning of winding, and as a result, the spool is The idle time during S replacement becomes longer, resulting in lower productivity.

The main object of the present invention is to solve the above-mentioned problems, shorten idle time, and prevent peeling of the insulating coating.

(Means for Solving the Problems) The present invention provides the following features when winding up a wire that has been drawn to its final diameter in the manufacturing process of CO□ welding wire using a winding machine.
Wind the wire by pinching the tip of the wire not on the spool but on the winding drum combined with it or on the winding drum installed in the winding machine. After winding, the spool is pulled out from the winding drum and the wire tip is attached to the winding drum rib of the spool. It is attached.

That is, the present invention is a method for winding a welding wire around a double-flanged squirrel-cage wire winding spool formed by combining wire rods having an insulating coating film, the outer periphery of which is continuous or discontinuous in the circumferential direction. Winding drum 2 with circular surface
After inserting the winding drum rib 1a of the spool S from the direction of the cylinder axis and mounting it on the winding machine, and inserting the wire starting end 18a into the winding drum 2 in the radial inward direction and gripping the winding drum 2, The winding machine is driven in the wire winding direction to wind the wire 18 around the winding drum 2 and the winding drum rib 1a, and after winding, the spool S on which the wire 18 is wound is pulled out from the winding drum 2 in the direction of the winding drum axis. Then, the wire starting end 18a is engaged with the winding trunk rib 1a.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 6 shows a winding device that is part of a winding machine.
A driving flange 10 and a driven flange 11 are arranged facing each other on the same horizontal axis, and the driven flange 13 is movable near and far with respect to the driving flange 10 by a rack and pinion mechanism 12.

A winding drum 2 is provided between the driving flange 10 and the driven flange 11 and is rotated together with the winding drum 2, and the winding drum 2 has an outer circumference continuous in the circumferential direction (see FIGS. 7 and 8). The surface is a discontinuous circular surface, and the example shown in FIG. 6 shows a discontinuous structure, that is, one composed of divided pieces 2A arranged in the radial direction.

In this example, the divided piece 2A has one end supported by a pivot 13 on the driven flange 11 in the radial direction and the outside thereof, and the other end engaged with an engaging pawl 14 mounted on the drive flange 10 so as to be able to expand and contract in the radial direction. It is said to be removable.

A notch 15 is formed at one axial end of the divided piece 2A, and a chucking block I6 is fitted into this notch 15, and the block 16 is biased by a spring 17 in the pinching direction.

Therefore, winding with this device is performed as follows.

Attach the spool S to the winding drum 2. This can be done by inserting the reduced diameter winding drum 2 into the virtual cylinder formed by the winding drum ribs 1a of the spool S from the cylinder axis direction through the advancement of the driven flange 11. When the spool S and the winding drum 2 are combined in this way, the engaging claw 1 is moved while the winding drum 2 is positioned slightly radially outward from the winding drum knob 1a.
Retained by 4.

Next, the tip of the drawn wire 18 is inserted from the outside in the radial direction by cooperation of the cut I5 and the chucking block 16, and is gripped by the winding drum 2.

That is, as shown in FIG. 6, when the wire guiding guide 19 having a wedge portion at the tip pushes the pro-clip 16 open against the spring 17 and the tip of the wire 18 is inserted, the elastic force of the spring 17 is released. The tip of the wire 18 is inserted and chucked by the block 16 through the block 16.

Therefore, the tip 18a of the wire 18 can be made into a simple folded part at the same time as the wire is cut, or it can be left in a straight shape.

After the tip of the wire is gripped by the winding drum 2 in this way, when the spool S is driven together with the winding drum 2 in the winding direction as shown by the arrow 20 in FIG. 2, the wire 18 is moved as shown in FIG. It will be wound up one after another.

During this winding, the wire 18 is reciprocated in the direction of the cylinder axis by a traverser or the like (not shown), and by shaping the circumferential surface with the winding cylinder 2, it is possible to eliminate curls in the wire 18.

When the winding is finished, the wire at the end of the winding is cut,
The spool S is removed by reducing the diameter of the winding drum 2 and pulling it out as shown in FIG. In this way, the wire tip 18a is fixed to the winding trunk rib la of the spool S by bending or other means.

That is, the spool S is removed and the next spool S is mounted on the winding machine using the time period in which the wire tip 18a is engaged with the winding trunk rib 1a, and the above-mentioned work is continued.

The winding drum 2 shown in FIGS. 7 and 8 has a cylindrical shape, and one flange 3 of the winding drum 2 is detachable, so that the winding drum 2 can be attached to the spool. It is inserted into and removed from the inner peripheral side of the winding trunk rib 1a of S, and the rest of the winding method is the same as described above.

(Effects of the Invention) According to the present invention, the wire tip is chucked to the winding drum on the take-up machine side at the beginning of winding, rather than to the winding drum rib of the spool. Since there is no need to process the winding material, and there is no need to perform a slow start at the beginning of the roll, productivity can be greatly improved.

In other words, a small unit weight (such as a C02 welding wire coil)
When winding 15 to 20 kg/)a+1) continuously, it is possible to shorten the spool replacement time and improve productivity. Specifically, the conventional wire drawing speed, which was directly connected to the wire drawing machine and winding machine for winding, was 530 m/min, but it has been increased to 600 m/min.
It is possible to process up to a minute.

In addition, in terms of quality, there is no tearing or peeling of the insulating coating, and since the wire starting end is secured after winding, it guarantees sufficient securing, no rework, no disconnection, and no risk of short circuits. Wire coils can be provided.

[Brief explanation of drawings]

Fig. 1 is a partial perspective view showing the chucking part of the wire tip (starting end), Figs.
The figure is a cross-sectional view showing an example of the main part of the winding mechanism of the winder, and FIGS. FIG. 9 is a perspective view of the spool example, FIG. 10 is a front view of the conventional example, FIG. 1F is an explanatory diagram showing the behavior of the starting end of the wire in FIG. 1O, and FIG. 12 is an explanatory diagram of a comparative example. 2 - Winding drum, 16 - Chucking block etho - Wire, 18a - Wire starting end, S - Spool, 1 a -
-S winding body rib.

Claims (1)

[Claims] 1. A method for winding a welding wire around a double-flanged squirrel-cage wire winding spool formed by combining wire rods having an insulating coating, the outer periphery being continuous in the circumferential direction or Winding drum 2 with a discontinuous circular surface
After inserting the winding drum rib 1a of the spool S from the direction of the cylinder axis and mounting it on the winding machine, and inserting the wire starting end 18a into the winding drum 2 in the radial inward direction and gripping the winding drum 2, Driving the winding machine in the wire winding direction to wind the wire 18 around the winding drum 2 and the winding drum rib 1a, and after winding, extracting the spool S around which the wire 18 is wound from the winding drum 2 in the direction of the trunk axis, The welding wire winding method is characterized in that the wire starting end 18a is then hooked to the winding trunk rib 1a.