JPS59230967A - How to take out welding wire - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for taking out welding wire from a pail pack in which welding wire is stacked and stored in a loop shape.
In particular, the present invention relates to a method for taking out welding wire that enables smooth transition of welding wire from one pail pack to another during welding.

If the amount of welding wire is small, it is wound around a bobbin, and if the amount is large, it is stored in a pail pack. The pail pack is a cylindrical body made of metal or cardboard with a bottom, and when in use, the lid is removed and a conical wire take-out device is fitted, and the welding wire is pulled out through the device and used for welding.

FIG. 1 is a diagram showing the usage state of a welding wire stored in a commonly used pail pack. 1 is a welding pail pack consisting of an outer cylinder 2 and an inner cylinder 3, between which a loop 4 of welding wire W is accommodated. The wire W is twisted approximately 360° per turn in advance so that it does not twist when pulled out.
The wire W of the loop 4 is given a twist in the opposite direction to the twist υ that occurs when it is pulled out, so that the wire W of the loop 4 always tends to expand.
A restraining member 5 is placed on top of. Note that this expanding force acts not only upward but also radially outward, so the loop 4 extends toward the outer cylinder 2 and creates a gap between it and the inner cylinder 3 as shown in the figure. The inner cylinder 3 may be omitted since it is already made.

Reference numeral 6 denotes a wire take-out device, which has a conical shape and is attached to the upper open end of the outer cylinder 2 by a fastening band 7. At the time of shipment from the factory, there is a disc-shaped lid on the top of the outer cylinder 2 as shown in the figure. At the welding site, this lid is removed, the wire W is pulled out from inside, and the wire is placed at the top of the wire take-out device 6. The wire is inserted through the guide hole, conduit tube 8, etc., and then the wire take-out device M6 is attached to the upper part of the outer cylinder as shown.

Although not shown, a wire feeding device, a welding torch, and the like are provided at the tip of the conduit tube 8, and the wire W is supplied to the welding part through these.

As the bath progresses, the wire W in the pail pack 1 is successively pulled out from the upper part of the loop 4 and gradually decreases, and the restraining member 5 descends. Reference numeral 9 in the figure is a ring provided at the upper end of the inner cylinder to prevent wires from tangling, and is used as necessary to connect the rooms.

Conventionally, when using such a wire for welding inside a pail pack, there has been a drawback when the wire in one pail pack is used up and replaced with the next new pail pack. It is difficult to check the amount of welding wire remaining in the pail pack and estimate when to replace it with a new pail pack, and the arc stops when the welding wire in the pail pack runs out. Only then did I realize that the pallet was empty, and I tended to replace it.

Especially in recent years, when welding work has become increasingly automated and welding work is being carried out fully automatically and unattended using welding robots, etc.
If welding work is interrupted due to running out of welding wire, it is time consuming to replace the pail pack, pass the welding wire through the conduit tube and torch, and restart the arc, reducing work efficiency. I don't like it. Further, it is not preferable to interrupt and restart welding midway in order to obtain a good welded part.

When using welding wire in a pail pack, it is necessary to perform a large amount of welding, and since the amount of welding wire used is large, it is important to increase welding efficiency, and for that purpose, the wire in a pail pack is used. It is desirable to start feeding wire from a new pail pack immediately when the pail pack is exhausted. For this reason, there has been a long-awaited development of a technique that would allow trouble-free transfer of welding wire between pail packs when replacing pail packs. The present invention was born out of such a need, and an object of the present invention is to provide a welding wire removal method that allows for smooth replacement of old and new pail packs during welding without interrupting welding work. This is a method for taking out welding wire from a pail pack that stores welding wire, and the final thickness of the wire in the pail pack to be used for welding and the starting end of the wire in the pail pack to be used for welding are The purpose is to connect the two pail packs by joining them, and to continuously take out the welding wire when replacing the pail packs while restricting the degree of freedom of the wire that straddles the two pail packs. The present invention will be explained below based on the examples shown in the drawings, but the following examples of performance 1i are not intended to limit the present invention.
Various embodiments can be considered without departing from the spirit of the present invention.

FIG. 2(a) is a sectional view showing an example of a charge of welding wire applied to the method of the present invention, and (a) in the same figure is a
) is a pure sectional view taken along line AA'. As shown in the figure, the pale pack 1 has an outer cylinder 2 which is its body and an inner cylinder 3 whose lower part is fixed to the bottom plate part 11 of the body outer cylinder 2, and these are arranged coaxially. Welding wire is wound into a loop in the space between the inner and outer cylinders and stored in a stacked manner. Reference numeral 4 indicates a loop-shaped stack of welding wires, and an annular restraining member 5 is placed on the upper end of the loop 4. The upper end of the outer cylinder 2, which is the bottomed body of the pail pack, is closed with a lid 10, and the mating portions of these members 2, 10 are connected by a tightening band 7.

Although not shown, at the time of shipment from the factory, a restraining member 5 and a lid 10 are installed for the purpose of preventing the stacked state of the wires from collapsing during transportation.
An elastic member such as a sponge is provided between the two.

Welding wire is given a twist of approximately 360° per turn within the elastic limit of the wire in order to prevent the weld bead from meandering during welding, and is stacked in a loop shape within a pail pack. are doing. As shown in the figure, the wire loop-shaped laminate 4 has its outer circumferential portion in contact with the inner wall of the outer tube 2 of the pail bar, and there is a gap between the inner circumferential portion and the outer wall of the inner tube 3, as shown in the figure. Then, the terminal end 12 of the bath contact wire laminated in this pail pack is guided upward from the lower end of the loop-shaped laminate 4 along the inner wall of the outer cylinder 2 in a spiral manner, and the upper end of the loop-shaped i7i laminate 4 is guided upwardly along the inner wall of the outer cylinder 2. and the bottom of the annular holding member 5 placed on the upper end,
It is taken out from the inside of the restraining member, further made into a spiral shape, arranged on the inner wall of the outer cylinder 2, and the final end is fixed with tape 13.

It is natural to arrange the wire in a spiral shape on the inner wall of the outer wire 1 because the final end of the wire will not be bent or deformed.

Especially in the holding member part, the welding wire is
Since it is sandwiched between the loop-shaped laminate 4 and the loop-shaped laminate 4, it is likely to be bent, but if it is formed into a spiral shape as described above, no problems such as bending will occur. Since the terminal end of the wire above the holding member is pulled out when welding and joining to the starting end of the next pail pack, it is best to provide a margin of 2 loops in the illustrated example. However, once the welding wire in a pail pack has been used to a certain extent, when joining it with the starting part of the wire in the next pail pack, there is some room at the end of the wire, so you need to be especially aware of the amount of the end of the wire above the holding member. There isn't.

Note that there are no particular limitations on how to fasten the starting end 14 of the wire, but for example, the wire may be inserted and bent into a hole provided in the upper part of the inner cylinder 3 and fastened. The present invention will be explained with reference to FIG. 3, which shows the usage state of the welding wire charges stacked and stored in the pail pack in this manner.

Figure 3 shows that during welding, when the welding wire in the pail pack (hereinafter referred to as the old bag) 1/2 is used up, the new pail pack (hereinafter referred to as the new pack) 1'' is about to replace it. As shown in the figure, the final end of the wire in the old pack 1' and the beginning of the wire in the new pack II' are joined by butt welding, and the wire portion near the joint is attached to the outer cylinder 1 of the old pack 1'. Clamping member 1 attached to
5 restricts the degree of freedom of the wire when transferring the wire from the old bag to the new pack, and prevents problems such as kink lines due to twisting of the wire. The clamping part of this clamping member is formed in a U shape, and clamps the wire via a sponge inside the clamping part.

In addition, under normal conditions, the movement of the wire is restrained and the conduit
When feeding the wire into the sponge 8, it is preferable to adjust the clamping pressure by adjusting the thickness of the sponge, etc. so that the wire can be easily removed. The wire introduction hole of the conduit tube 8 is attached to the support plate 1-6, and the support plate 16 is movable on the rail 17 arranged above the old and new packs by rollers (indicated by dotted lines) on the back side of the support plate 1-6. ing.

When the welding wire (V) taken out from the old pack in this state is used up, the welding wire (V) below the holding member is used up, leaving the holding member at the bottom of the pail pack and rotating the welding wire (V) from the upper conduit In this way, the welding wires stacked in the old pack are used up, and finally, the wire end portion spirally arranged on the inner wall of the outer cylinder 2 is taken out from the pail pack. Next, the welding wire is released from the clamping member 15 and the welding wire is removed from the new pack.The wire introduction hole of the conduit tube is attached to a movable support member on the rail 17, so it can be pulled out. It is located at a non-optimal position corresponding to the state of the wire being lifted, and when exchanging the old and new packs, it automatically moves in the direction of the arrow, that is, upwards to the new pack 1.When transferring the wire from the old pack to the new bag, In addition to the above-mentioned clamping method, various means for regulating the degree of freedom of the wire can be considered, such as an adsorption method using a magnet, or a method of inserting the wire through a perforated weight 18 (indicated by a dotted line) such as an insulator.In either case, welding The wire used for this purpose is twisted, so when the wire is free to some extent during wire transfer, it twists in the opposite direction in an attempt to eliminate the twist, which tends to cause tangles and tangles, leading to straddling between the new and old pail packs. Restricting the freedom of the wire by restricting the movement of the wire is a meaningful process ↑6 for realizing smooth wire transfer.Moreover, the movable means for the wire introduction hole of the conduit tube 8 is as described above. In addition to the rail method, a method may also be used in which a conduit tube is attached to a rotatable arm tip provided on a support.

As described above, according to the welding wire removal method of the present invention, it is possible to smoothly replace old and new pail bags without interrupting welding. In this regard, with the conventional technology, in the worst case, the wire passes through the feeding device and cannot be fed, welding stops, and the wire breaks. Therefore, a new pail pack is ordered, the wire is pulled out from it, and the conduit
If the welding device is an automatic welding device, the wire must be passed through a pipe, a wire feeder, a welding torch, etc., and then reset to start welding, which is extremely troublesome. Furthermore, even if the welding wire is replaced with a new pail pack before it is used up, interruption of welding is unavoidable.

As explained above, according to the present invention, the pail pack can be replaced smoothly without interrupting the bath welding operation, so it is possible to significantly reduce the hindrance to the welding operation.
Its usefulness is extremely great.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the usage state of welding wire stored in a pail pack, FIG. ) is (a
FIG. 3 is a cross-sectional view taken along line AA' of FIG. 1... Pale pack, 2... Torso, 4...
・Loop-shaped laminate, 5... Suppressing member, 8... Conduit tube, 12... Wire end portion, W
...Applicant for welding wire $1/day / Patent attorney for Welding Industry Co., Ltd. Minoru Aoyagi Procedural amendment (voluntary) 1. Display of the case 1982 Patent Application No. 103842 2 Name of the invention Method for taking out welding wire 3 Person making the amendment Relationship to the case Patent applicant address 3-5-4 Tsukiji, Chuo-ku, Tokyo Name Nippon Steel Welding Industry Co., Ltd. Representative Hiroshi Komatsu 4, Agent 101-5 Date of amendment order None 66 Number of inventions increased by amendment None 8 Contents of amendment (1) Specification page 9, line 8 Insert the following sentence after the word ``Iru.''. In addition, a hand-type welding machine can be used as a butt welder to join the wire ends of the new and old side packs, or the welding machine body and clamp electrode part can be separated and connected with a cable. A mounting arm is installed on a support that is erected on the movable trolley so that it can move up and down, rotate freely, and move back and forth in the horizontal direction.A clamp electrode is placed on the tip of the arm to grip the wire. It is convenient to use a butt welding machine with a structure that allows flexibility in the parts because it allows you to minimize the length of the wire ends pulled out from the new and old packs when joining.j

Claims (1)

[Claims] A method for taking out welding wire from a pail pack storing welding wire, in which the final end of the wire in the pail pack to be used for welding and the starting end of the wire in the pail pack to be used for welding are joined, and both pails are removed. A method for taking out a welding wire, characterized in that the welding wire is continuously taken out when replacing a pail pack while communicating between packs and regulating the degree of freedom of the wire that straddles both pail packs.