JPH0111633Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a welding wire charge in which welding wire is coiled and housed in a short cylindrical container.

(Prior art) Conventionally, welding wire with a wire diameter of 0.9 mm to 2.0 mm was wound as a spool with a unit weight of 6 to 20 kg, or as a spool with a unit weight of 100 kg.
It is used in a ~300Kg container called a pale pack. However, spool-wound wire has the following drawbacks.

During welding, the wire is fed by a feed roller attached to the wire feeding motor of the welding machine. Therefore, at the beginning of use, it is necessary to pull out the wire while rotating a full spool weighing 10 to 20 kg, which places a large load on the wire feed motor, and in some cases, the wire feed becomes unstable, resulting in poor welding. I'll wake you up.

Since the outer diameter of the spool is small, such as 270 mm, the wire becomes curly, and the wire comes into contact with the inner surface of the conduit tube that guides the wire to the welding torch, causing large friction. Eventually, the wire will buckle inside the conduit tube, making feeding impossible. Therefore, the distance between the feeding device and the torch cannot be increased, and the range of action for welding work is limited. In addition, the spool must be installed and replaced in the immediate vicinity of the welding work area, which is generally in a poor environment, which is not desirable in terms of worker safety.

Because the end of the wire is firmly attached to the spool, the wire cannot be used until the end.

The wires tend to bite into each other in the spool,
If biting occurs, wire feeding may stop during welding, resulting in welding defects.

On the other hand, since the wires loaded in the pail pack are taken out one loop at a time, the load on the wire feed motor is smaller than in the case of spool-wound wire, and feeding does not become unstable. Also, the pail diameter is usually
Since the diameter of the wire is 500 to 660 mm, which is quite large compared to the spool diameter, there is almost no winding of the wire, or even if there is, it is smoother than that of spool-wound wire, and the feeding performance is also good. The distance of the conduit tube between the device and the torch and between the feeding device and the pail pack can be increased. However, since it is heavy at 100 to 300 kg, a machine such as a forklift or a crane must be used to move the pail pack, and it cannot be handled as easily as spool-wound wire. Also, the spool winding wire 5~
Since the wire is loaded with 30 times the capacity, the service life is longer and there is a risk of rust on the wire surface in the workplace environment.

Furthermore, when using such a wire for welding within a pail pack, there has been a drawback in the past when the wire in one pail pack is used up and replaced with a new pail pack. In other words, 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 pail pack becomes empty only when the welding wire in the pail pack runs out and the arc stops. However, in recent years, welding work has become increasingly automated, and welding robots, etc., are performing fully automatic and unmanned welding. If the welding work is interrupted because the wire runs out, it takes time to replace the pail pack, pass the welding wire through the conduit tube and torch, and restart the arc, which is undesirable and reduces work efficiency. Further, it is not preferable to interrupt and restart welding midway in order to obtain a good welded part.

(Purpose of the invention) The purpose of the invention is to provide a new welding wire charge that eliminates the drawbacks of both the spool-wound wire and the pale pack-wound wire as described above, and also to make it easier to replace the old and new wire containers during welding. It is an object of the present invention to provide a welding wire charge that allows welding work to be carried out without interruption.

(Structure and operation of the invention) The gist of the invention that achieves this purpose is to attach a loop body of welding wire to a short cylindrical wire container having vertical notches at multiple locations on the cylindrical body. A welding wire charge, which is housed in a welding wire, and has an annular restraining member provided on its outer periphery with a convex portion that loosely fits into a notch of the wire container on the loop body,
The wire end portion at the lower end of the loop body is guided upward along the cylindrical body, taken out from inside the restraining member, and attached to the wire container.

Specific examples of the present invention will be described below based on the drawings, but the following specific examples do not limit the present invention, and various modifications can be made without departing from the gist of the present invention.

1A shows a perspective view (partially cut away) of a welding wire charge of the present invention, FIG. 1B shows a plan view (partially cut away), and FIG. 1C shows a sectional view. As shown in the figure, the load 1 of the present invention is a short cylindrical container 20 that has vertical cutouts 4 at multiple locations (four locations in the illustrated example) in a bottomed cylindrical body 2, and a wire loop is placed inside the container 20. An annular restraining member 3 is placed on the loop body 5 and has a protrusion 4' on its outer periphery that fits loosely into the notch 4 of the cylindrical body 2 of the wire container. Inside the cylindrical container 20, a welding wire with a unit weight of 10 to 30 kg is twisted at a rate of approximately 360° per turn within its elastic limit in order to prevent the bead from meandering during welding. A loop body 5 laminated in a loop shape is stored. When the wires are stored in a stacked manner, as shown in FIG. 1B, the outer periphery of the loop body 5 is in contact with the wall surface of the body of the container 20, and the inner periphery thereof forms a cylindrical cavity.

Each layer of the stacked wires has a flower pattern shape, and the center of each wire loop is housed in a circle centered on the central axis of the container 20, and when looking at the entire stack of wires, The locus drawn by the center of each continuous wire loop becomes a spiral with the central axis of the container 20 as its axis. In addition, since the wire is stored with a twist, a force that tries to spread out to the outer periphery within the container 20 as it tries to return is constantly acting, and when the wire is freed, the container body 20
It has a tendency to jump upward along the wall of the wall. The restraining member 3 presses the loop body 5 due to its own weight.
By suppressing the wire from its upper end, and by suppressing the wire that tries to jump from the gap between the outer periphery of the holding member and the wall of the container body with the convex portion 4' provided on the outer periphery of the holding member, the wire can be removed due to the tendency of the wire to jump up. Prevent wires from getting tangled or tangled.

The dimensions of such a wire charge are not particularly limited, but for example, welding wire diameter 1.2 mm, unit weight 20
In the case of Kg, the diameter of the container is 500 mm, the height is 60 mm, the wire winding thickness of the loop body is 70 mm, and the diameter of the cylindrical cavity inside the loop body is 360 mm.

Further, in the present invention, for the purpose of replacing the old and new wire containers without interrupting the welding operation when welding the loaded material, the loading state of the welding wire in the container, that is, the disposition of the wire end portion, is as follows.

Generally, when welding is performed using welding wire, it is important to increase welding efficiency, and for this purpose, it is desirable to start feeding wire from a new wire container as soon as the wire in the container is used up. To do this, it is sufficient to weld the final end of the wire in the container in use to the starting end of the wire in the new container, but the lower end of the wire loop stacked on the final end of the welding wire in the container, that is, the bottom of the container, Because of its location, it cannot be pulled out for welding, and conventionally it has been impossible to continuously transfer the welding wire from container to container in the unloaded state. In this regard, in the present invention, as shown in Figure 1 a, b, and c,
Terminal end 6 of welding wire stacked inside container 20
is guided upward from the lower end of the loop body 5 along the inner wall of the cylindrical body 2 and passed between the upper end of the loop body 5 and the bottom of the annular restraining member 3 placed on the upper end,
A hole 7 in which a body portion 2 is provided to take it out from the inside of the holding member.
Insert it and lock it (you can also tape it).

When the wires taken out in such a loaded state are used up, the wires below the holding member 3 are used up, leaving the holding member 3 at the bottom of the wire container 20.
Since the wire is transferred to a new container, it becomes possible to exchange the old and new wire containers without interrupting the welding operation. In the example shown in Figure 1, the end of the wire above the holding member is made into a 1/4 loop for simplicity, but in reality, it will be pulled out when welding to the beginning of the wire of the next load, so it should be made with a margin of 1~ Make about 2 loops.

Although there is no particular limitation on how to fasten the starting end of the wire, for example, the wire is inserted through a hole 8 provided in the restraining member 3, bent, and fastened.

In the specific example shown in FIG. 1, the notch provided in the body of the container is open at the top and is weak in strength as a wire container. This problem has been improved by the specific example of the charge shown in FIG. 2, in which a reinforcing ring 9 is attached to the upper end of the cylindrical body.

Hereinafter, the usage state of the welding wire charge of the present invention will be explained with reference to FIGS. 3 and 4.

FIG. 3 is an example in which the charge of the present invention is used alone. 10 is a wire take-out device, which includes a conical part 10a, a flat top part 10b, and a short cylindrical part 10 at the bottom.
c, and a leg portion 10d, and the lower cylindrical portion has a shape and dimensions to cover the wire load 1. A through hole 11 is provided in the center of the flat top portion 10b, into which the end of the conduit tube 12 is attached. Reference numeral 13 denotes a wire feeding device which feeds the wire W drawn out from the load 1 to the welding torch 15 through the second conduit tube 14. When welding, place the charge 1 horizontally in the appropriate place and place the container 20
The wire W is pulled out from the wire W and the wire take-out device 10
The wire W is inserted into the conduit tube 12 from the inner surface of the conduit tube 12, and the wire is caught between the driving and holding rollers of the wire feeding device 13. Then, the wire removal device 10 is placed over the wire load 1 as shown.
Preparations are now complete, wire feeding is started by energizing the drive motor M of the wire feeding device 13, and welding can be started by turning on the welding power. The wire W is pulled out from the hole inside the holding member, and the wire W is pulled out from the conduit tube 12 attached by the wire takeout device 10.
through wire feeder 13 and conduit tube 14 to welding torch 15. If necessary, a wire straightener (not shown) is removably attached in alignment with the wire through hole 11 of the wire extraction device 10.

The twisted wire housed in the container 20 tries to bounce along the inner wall of the body 2 of the container, but since there is a bottom of the container below, it does not bounce downward and will bounce upward. However, since there is a restraining member 3 above, the wires will not jump up, and thus the wires will not become tangled or tangled.

Fig. 4 shows an example in which the loading device of the present invention is used continuously by automatically exchanging the wire container during welding work, and Fig. 4a is a front view of the device in use;
Figure b shows a side view. In the figure, 16 is a wire take-out device 16a, 16b, 16c, 16d, 16
e and 16f are frames of the device 16, and 17 are wheels for movement attached to the bottom frame 16d of the device. The horizontal frames 16a, 16b, 16c are provided on the vertical frames 16e, 16f in a stepped manner as shown in the figure, and welding wire charges 1a, 1b, 1c are placed on each horizontal frame to take out the wire. They are placed shifted by a radius. Further, the load 1d can be stored on the bottom frame 16d. The wire feeding mechanism is similar to the example shown in FIG. 3, and the end of the conduit tube 12 is attached to the center of the top of the vertical frame 16e.

Before starting to take out the loads 1a, 1b, 1c placed on the horizontal frames 16a, 16b, 16c for welding, the wire ends of the load 1a and the wires of the load 1b are connected in advance as shown in the figure. The starting end, the wire terminal end of the charge 1b, and the wire starting end of the charge 1c are joined by welding. W′,
W″ indicates the wire of the connection between this charge.

In this state, the welding wire is taken out from the wire container and used. First, the wire W of the charge 1a is introduced into the pulling conduit tube 12' and used, and as soon as it is used up, the wire of the charge 1b is continuously pulled up via the wire W', and then the wire of the charge 1b is pulled up continuously through the wire W'. Immediately after the lifting of the load 1b is completed, the wire of the load 1c is continuously pulled up via the wire W''.Then, while the wire of the load 1c is being pulled up and used, the empty loads 1a, 1
After removing the container b, the load 1d stored in the bottom frame 16b is placed on the horizontal frames 16a and 16b, and the wire is connected in the same manner as above by connecting the starting end and the terminal end of the wire. Make sure you can take it out. Therefore, after the wire of the charge 1c is pulled up, the wire of the charge on the horizontal frame 16b is continuously used, and furthermore, the wire of the charge on the horizontal frame 16a is used.
Automatically transitions to using the wire above. Repeat this operation below.

The wire that is pulled upward is loaded with loads 1a,
The pulling state is different for each position of 1b and 1c. In other words, at the position of the load 1a, the distance to the conduit tube is short and the distance to the conduit tube is short and the distance from the diagonal direction is high, at the position of the load 1b the distance to the conduit tube is long and the distance to the conduit tube is long and the distance from the horizontal frame is 16b while being pulled up. However, in either case, it can be pulled up smoothly without any inconvenience.

In addition, if a detector is installed at a predetermined location of the load mounting position of the horizontal frames 16a, 16b, 16c to operate a lamp, buzzer, etc. for detecting the wire empty of the load, it is possible to detect when the load is used up. can be easily and reliably known, and the loaded load 1d can be accurately located.

(Effects of the invention) To summarize the effects of this invention: This kind of thing (conventional Pail pack loading)
As mentioned above, it weighs 200 to 300 kg and is taller than its diameter. In comparison, the charge of the present invention has a smaller height compared to its diameter, and is smaller and lighter.

By using the welding wire charge of the present invention, the final end of the welding wire in the container in use can be simply welded and joined to the starting end of the wire in the new container, allowing replacement of old and new wires without interrupting welding. be able to. In this regard, with the conventional technology, in the worst case scenario, 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 wire feeding device,
If you use automatic welding equipment, you have to pass it through a welding torch, etc., and then reset it 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 cannot be avoided.

As explained above, the welding wire charge of the present invention has lower feeding resistance and better feeding performance than conventional spool-wound wire, and is less likely to cause welding defects. Conduit tube distance can be increased. In addition, it has various advantages such as being easier to handle as it is lighter in weight at 10 to 30 kg compared to the wire wrapped in a pail pack.Furthermore, the wire container can be replaced automatically without interrupting the welding work, so there is no hindrance to the welding work. This makes it possible to significantly reduce the amount of water, and its practicality is extremely large.

[Brief explanation of the drawing]

FIGS. 1A, 1B, and 1C are a perspective view, a plan view, and a sectional view showing an example of a wire charge according to the present invention. Fig. 2 is a perspective view showing another example of the present invention, Fig. 3 is an explanatory diagram showing a state in which the charge of the present invention is used alone, and Fig. 4 a and b are other states of use of the present invention. It is a front view and a side view which show an example (the case where multiple parts are used consecutively). DESCRIPTION OF SYMBOLS 1... Loading material, 2... Cylindrical body part, 3... Holding member, 4... Notch part, 4'... Convex part, 5... Loop body, 6... Wire terminal part, 7... Hole, 10,16
... wire take-out device, 20 ... wire container.

Claims (1)

[Scope of utility model registration request] A loop body of welding wire is stored in a short cylindrical wire container having notches in the height direction at multiple locations on the cylindrical body, and a convex portion that loosely fits into the notches of the wire container is provided on the loop body. This is a load of welding wire on which an annular holding member is placed on the outer periphery.The wire terminal end at the lower end of the loop body is guided upward along the cylindrical body, and is taken out from inside the holding member and placed in a wire container. A welding wire charge characterized by being attached to.