JPH09156827A - Welding wire ejecting member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the generation of tangle of wire by providing presser plate, which is made of the layered structure, and a thin plate-shaped elastic member, which is projected to the inner wall direction of a pail back, so that a tip of a projecting piece of the thin plate-shaped elastic member abuts on the inner wall of the pail back. SOLUTION: An annular presser plate 5, which is provided with a thin plate- shaped elastic member 6, is placed on an upper end of a wire layered structure 4, and lowered with the upper end of the layered structure so as to press the layered structure 4 during the time for ejecting a welding wire, and a jump-up of a wire W, which is housed in a pail back 1, is prevented. The thin plate- shaped elastic member 6 has plural projecting pieces, and the tip thereof abuts on the inner wall of the pail back 1. With this structure, at the time of ejecting the wire from the pail back, tangle of the wire to be generated by pulling-up plural loops of the wire at the same time from a clearance between the presser plate and the inner wall of the pail back is eliminated, and the wire can be smoothly ejected so as to be fed to a welding unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding wire take-out member in a pail pack in which welding wires such as twisted solid wires and flux-cored wires are wound in a loop and stacked and stored.

[0002]

2. Description of the Related Art A pail pack is used as a container for a large capacity welding wire. The supply of the wire from the pail pack is carried out in the order of taking out from the upper part of the wire laminated body to the upper part of the pail pack and guiding it to the welding torch through the conduit cable by the wire supplying device.
The form of the pail pack is a double cylinder having an inner cylinder and an outer cylinder and housing the wire in the space between the inner and outer cylinders, or a single cylinder having the inner cylinder and housing the wire in the outer cylinder. Some of them have an annular pressing plate placed on them. The wire can be taken out from the inner hole of the annular pressing plate or from the outside of the pressing plate along the inner wall of the pail pack.

Among them, as a technique for taking out the wire along the inner wall of the single-cylinder pail pack, for example, Japanese Patent Publication No.
There is a publication of -42706. This will be explained with reference to FIG. 8. Wires are stacked and housed in a loop shape in a space inside a pail pack 1 composed of an outer cylinder portion 2 and a bottom portion 3, and a wire bounce prevention member is provided on an upper surface of a laminated body 4 of the wires. The pressing plate 5 is mounted. That is, the wire stored in the pail pack 1 is twisted within the elastic limit,
Since each loop is stored with a twist of 360 °,
Since the wire has a resilience in the pail pack and tends to jump upward, a pressing plate 5 made of a rigid body is placed on the upper surface of the wire stack 4 to press the wire from above.

The wire W is pulled upward from the gap between the outer periphery of the pressing plate 5 and the inner wall of the pail pack 1, but the following wire loop may jump randomly along the inner wall of the pail pack 1 from this gap. The pressing plate 5 is provided with a spring-up preventing elastic body 7 that comes into contact with the inner wall of the pail pack 1 so that it can be pulled upward one loop at a time.

By the way, when the wire W is taken out from the pail pack 1, the loop of the wire W immediately below the pressing plate 5 is unraveled and expanded by the pulling force, and swung from the gap between the pressing plate 5 and the inner wall of the outer tubular portion 2. While rising. At this time, since the upper surface of the laminated body 4 is in a complicated uneven state in which the wire loops are densely layered, the wire to be pulled up may be caught on the subsequent wire. Therefore, the pressing plate 5
Entanglement may occur when a plurality of loops are simultaneously pulled up from the gap between the inner wall of the bale pack 1 and the pail pack 1.

Japanese Unexamined Patent Publication (Kokai) No. 5-178539 and Japanese Utility Model Laid-Open No. 5-77163 disclose techniques for solving the above-mentioned problems. 9 and 10 show examples of the described technique. FIG. 9 shows a high-strength elastic body 9 used to increase the contact ratio with the inner wall of the pail pack, and FIG. 10 shows an elastic body 10 having a structure in which pressure is applied in the radial direction of the pail pack. It is attached to the pressing plate 5 of. All of these are effective in preventing multiple loops from being pulled up at the same time, but when the wire W is pulled up between the elastic body 9 or 10 and the inner wall of the pail pack, the resistance is large, and particularly high efficiency welding is supported. When the wire W is pulled up at a high speed, the wire surface is scratched or bent, and the chip is clogged. Further, the effect of lifting the pressing plate 5 to press the wire is lost, and the wire on the upper surface of the laminated body 4 is free. Tangles or tangles may occur when the product is bounced on.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks of the prior art, and when the wire is taken out from the pail pack, the wire comes out of the gap between the pressing plate and the inner wall of the pail pack. An object of the present invention is to provide a take-out member for a welding wire that does not become entangled due to the fact that a plurality of loops are pulled up at the same time. As a result, even when the wire is taken out at a high speed, the wire surface can be smoothly taken out and fed to the welded part without being scratched or bent on the wire surface, and without further lifting the pressing plate. .

[0008]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned problems, and is a take-out member for a welding wire which is coiled and stored in a stack in a single-cylinder pail pack. An annular pressing plate that is placed on the upper end of the laminated body of welding wires so as to form a gap between them and that descends together with the upper end of the laminated body to press the laminated body; A thin plate-shaped elastic member protruding toward the inner wall of the pail pack is provided at a position, and the thin plate-shaped elastic member has a plurality of projection pieces extending in the inner wall direction at predetermined intervals, and the tip end portion of the projection piece is a pail pack. It is characterized in that the structure is in contact with the inner wall.

Further, in the above-mentioned welding wire take-out member, the thin plate-shaped elastic member is characterized in that the projecting pieces have short projecting pieces and long projecting pieces. Further, here, the maximum difference A between the inner wall position of the pail pack and the outer peripheral position of the annular pressing plate, the short protruding piece length B and the long protruding piece length C of each thin plate-like elastic member from the outer peripheral end of the annular pressing plate are set. Is also characterized in that A <B, B / C is 0.3 to 0.7, and the width D of the thin plate-shaped elastic member that abuts the inner wall of the pail pack is 50 to 100 mm.
It should be noted that synthetic rubber, natural rubber, elastic plastic, or the like is used as the thin plate elastic member, but other flexible materials can be used in the same manner.

[0010]

1 shows a take-out member for a welding wire of the present invention in which a thin plate-shaped elastic member 6 is provided around an annular pressing plate 5. The annular pressing plate 5 provided with the thin plate elastic member 6 is placed on the upper end of the wire stack 4 as shown in the sectional view of the pail pack of FIG. 4 together with the upper end of 4, the laminated body 4
The wire W stored in the pail pack 1 is prevented from jumping up. The portion indicated by X in FIG. 2 corresponds to the welding wire take-out member of FIG. 1, and the portion indicated by Y is another embodiment of the present invention described later.

At least three thin plate-like elastic members 6 provided on the annular pressing plate 5 are required (at intervals of about 120 degrees). If it is less than 3 points (about 90 degrees and 1 point), the wire W that is about to be pulled up while swirling along the inner wall of the pail pack 1 will be transferred to the subsequent wire W on the surface of the laminated body 4 in which the wire loops are densely packed. When they are caught, a plurality of them are simultaneously pulled up from the gap between the inner wall of the pail pack and the pressing plate 5, resulting in entanglement. Further, since the wire loop is pulled up while spreading toward the inner wall of the pail pack, a plurality of wires may jump out from the gap between the inner wall of the pail pack and the pressing plate 5 on the opposite side of the wire pulling point, and entanglement may occur. .

The thin plate elastic member 6 is shown in FIGS.
As shown in (c), it has a plurality of protruding pieces 8 having a triangular shape, a trapezoidal shape, a rectangular shape, or a semicircular shape, and the tip end portions of the protruding pieces are in contact with the inner wall of the pail pack 1. The annular pressing plate 5 provided with the thin plate elastic member 6 is placed on the wire laminated body 4 of the pail pack 1 as indicated by X in FIG.
FIG. 4 is an enlarged view of this part (the left and right sides are opposite to those in FIG. 2).

By making the thin plate elastic member 6 having a plurality of protrusions 8, even when the wire W is pulled out from the gap between the inner wall of the pail pack 1 and the pressing plate 5 at a high speed, the wire to be pulled up is The contact with the elastic member is a point contact by one of the protruding pieces, while the wire pulled up at the same time is in a loop shape, so that it is a line contact in the wire longitudinal direction by the plurality of protruding pieces. Therefore, the loop-shaped wire can be prevented from being pulled out by the plurality of projecting pieces, so that the plurality of loops cannot be pulled up at the same time. Further, even if the loop pulls up one projection piece at the same time, it can be pressed by the next projection piece. Further, as described above, the wire W to be pulled has a point contact with the elastic member,
Since the protruding pieces are provided at a predetermined interval, even if the wire W is pulled up at a high speed, it does not have a large resistance, and the pressing plate is not lifted, and the wire surface is not scratched or bent, which is good. A good wire feed is obtained.

Next, as another aspect of the present invention, the thin plate-shaped elastic member 6 is made into a short protruding piece 8a and a long protruding piece 8b as shown in FIGS. 5 (a), 5 (b) and 5 (c). The use state is shown by the Y portion in FIG. 2, and an enlarged view of this portion (in this figure, the state where the wire to be taken out has just reached) is shown in FIG.

The thin elastic member 6 has a plurality of short projection pieces 8a.
By providing the long projecting piece 8b and the long projecting piece 8b, as shown in FIG.
When it comes into contact with the inner wall of the short projection piece 8a and the long projection piece 8b
Are upper and lower elastic members. As a result, even if the wire is pulled up at a higher speed, the short protrusion 8a and the long protrusion 8b
Since it is an elastic member of two upper and lower steps, the loop caught on the wire W to be pulled up is pressed by the next long protruding piece even if it passes through the portion of the short protruding piece, and a plurality of loops are formed. It cannot be pulled up at the same time. In addition, the structure of the short protruding piece 8a and the long protruding piece 8b of the thin plate-like elastic member is the same as that of one thin plate-like elastic member as shown in FIGS. 5 (a), 5 (b) and 5 (c). 2 like d) and (e)
The same effect can be obtained by stacking sheets.

Further, FIG. 7 is a view for explaining a preferable dimensional relationship when a thin plate-like elastic member having a short protruding piece and a long protruding piece is used, and shows an example in the case of the embodiment of FIG. 5 (a) above. 11 in the drawing shows the inner wall of the pail pack. Here, the maximum difference A between the inner wall position of the pail pack and the outer peripheral position of the annular pressing plate 5, the short protruding piece length B and the long protruding piece length C of each thin plate-like elastic member from the outer peripheral end of the annular pressing plate 5 Then, these relationships are
<B, and B / C is preferably 0.3 to 0.7. In the above description, the meaning of maximizing the difference between the inner wall position of the pail pack and the outer peripheral position of the annular pressing plate is that the pressing plate may be slightly eccentric in the pail pack. The value of the difference at the position where the gap is maximized is A. As a result, the short projecting piece 8a and the long projecting piece 8b of the thin plate-like elastic member are surely provided at the respective locations on the inner wall 11 of the pail pack.
Since it abuts on the wire W, the loop caught on the wire W to be pulled up can be surely pressed. If A> B, a portion that does not come into contact with the inner wall of the pail pack is generated, and a plurality of loops may be entangled at the same time, resulting in entanglement.

If B / C is less than 0.3, the length of the long protruding piece 8b is too long and the area of contact with the inner wall of the pail pack is large, so that the pulling resistance of the wire W to be pulled up becomes large. The wire W may be bent.
When B / C exceeds 0.7, the difference between the lengths of the short protruding piece 8a and the long protruding piece 8b is small, so that the step difference between the upper and lower two steps of the thin plate elastic member is reduced, and the wire is pulled up at a particularly high speed. And multiple loops may be pulled up at the same time, causing entanglement and entanglement.

The width D of the portion of the thin plate elastic member shown in FIG. 7 that contacts the inner wall 11 of the pail pack is preferably 50 to 100 mm. If D is less than 50 mm, the width of the portion of the thin plate-shaped elastic member that comes into contact with the pail pack is too narrow, and the loop to be pulled up at the same time as the wire W to be pulled up cannot be pressed down, resulting in entanglement and entanglement. When D is more than 100 mm, the pulling resistance of the wire W to be pulled becomes particularly large when the wire is pulled at a high speed, and the wire may be bent.

[0019]

The present invention will be described in more detail with reference to the following examples. (Example 1) Wire diameters of 1.2 mm 1.4 mm and 1.6 m in a pail pack having inner diameters of 500 mm and 650 mm.
The m solid wire and the flux-cored wire were laminated by twisting 360 ° per loop in a loop shape. Further, the number and shape of the thin plate-shaped elastic members provided on the outer peripheral portion of the annular pressing plate were changed, and the elastic members were placed on the laminated body in the pail pack at 12 m / min.
The wire was continuously taken out at a speed of 3 hours. Table 1 shows the results of examining the number of occurrences of entanglement as seen from that time.

[0020]

[Table 1]

Test No. in the table. 1-3 are examples of the present invention, test N
o. Nos. 4 and 5 are comparative examples. Test No. which is an example of the present invention.
In Nos. 1 to 3, thin plate-like elastic members are provided on the pressing plate so as to project at three or more locations, and a plurality of projecting pieces of the elastic members come into contact with the pail pack. It was a very good result with no entanglement and no scratches or bending on the wire surface.

Test No. in the comparative examples. In No. 4, since there are only two thin plate-like elastic members provided on the pressing plate, the wire is pulled up from the gap between the inner wall of the pail pack and the pressing plate, and at the same time from the opposite of the wire pulling point, the wire is entangled three times There has occurred.

Test No. 5 is a thin rectangular elastic member provided on the pressing plate does not have a plurality of projection pieces, is a single rectangle, and since the width of abutting against the pail pack is too large, the resistance when the wire is pulled out is large, The wire was bent twice and the wire on the upper surface of the laminate was tangled due to the lifting of the pressing plate.

(Example 2) Inner diameters of 500 mm and 650 mm
Wire size 1.2mm, 1.4mm
A 1.6 mm solid wire and a flux-cored wire were laminated by twisting 360 ° per loop in a loop. Further, the number of thin plate-shaped elastic members provided on the outer peripheral portion of the annular pressing plate, the shape, the length of each of the long and short projection pieces,
After changing the difference between the inner diameter of the pail pack and the outer diameter of the pressing plate and the width of contact with the inner wall of the pail pack, the wire was placed on the laminate inside the pail pack and the wire was continuously taken out at a speed of 15 m / min for 3 hours. It was Table 2 shows the results of examining the number of occurrences of entanglement as seen from that time.

[0025]

[Table 2]

Test No. in the table. 6 to 10 are examples of the present invention, Test No. 11 to 15 are comparative examples. Test No. which is an example of the present invention. Nos. 6 to 10 are provided on the pressing plate by projecting thin plate-like elastic members at three or more places, and this has a plurality of short projecting pieces (length B) and long projecting pieces (length C). C is proper, and the difference between the inner wall position of the pail pack and the outer peripheral position of the holding plate A
On the other hand, it is in contact with the pail pack so that A <B. Furthermore, since the width of the thin plate elastic member in contact with the pail pack is appropriate, it does not become entangled and entangled even when the wire is taken out at high speed, and the wire surface is not scratched or bent, which is extremely good. It was the result.

Comparative Example Test No. No. 11 has a protruding piece that is shorter than the difference A between the inner position of the pail pack and the outer peripheral position of the pressing plate (A> B), so there is a protruding piece that does not contact the inner wall of the pail pack, and multiple loops are pulled up at the same time. Entanglement occurred twice.

Test No. In No. 12, the ratio (B / C) of the short protruding piece B to the long protruding piece is small, that is, the long protruding piece is too long, so the pulling resistance of the wire is increased and the wire is bent once. Test No. In No. 13, the ratio (B / C) of the short protruding piece B and the long protruding piece is too large, that is, the difference in length between the short protruding piece and the long protruding piece is small. For this reason, the step difference between the upper and lower two steps of the thin plate-like elastic member is reduced, and the wire is pulled up at a high speed, so that a plurality of loops are pulled up at the same time and entanglement occurs once.

Test No. In No. 14, since the width of the portion of the thin plate-shaped elastic member that abuts on the inner surface of the pail pack is narrow, a plurality of loops were pulled up at the same time and entangled once. In addition, the test No. In No. 15, since the width of the portion of the thin plate-shaped elastic member that abuts on the inner surface of the pail pack is wide, the pulling resistance of the wire is large and the wire is bent once.

[0030]

According to the welding wire takeout member of the present invention, when the wire is taken out from the pail pack, the wires are simultaneously pulled up from the gap between the pressing plate and the inner wall of the pail pack.
There is no entanglement. Further, even when the wire is taken out at a high speed, the wire surface can be smoothly taken out and sent to the welded part without being scratched or bent on the wire surface and further without lifting the pressing plate.

[Brief description of the drawings]

FIG. 1 is a perspective view of a take-out member for a welding wire according to the present invention.

FIG. 2 is a sectional view showing a state in which a welding wire stored in a pail pack according to the present invention is taken out.

3 (a), (b) and (c) are views showing examples of the shape of the thin plate elastic member in the present invention.

FIG. 4 is an enlarged view of part X in FIG.

5A to 5E are views showing examples of the shape of the thin plate elastic member in the present invention.

FIG. 6 is an enlarged view of a Y portion of FIG.

FIG. 7 is a view for explaining the dimensional relationship of the take-out member of the welding wire of the present invention.

FIG. 8 is a sectional view showing a state in which a welding wire stored in a conventional pail pack is taken out.

FIG. 9 is a perspective view showing a take-out member of a welding wire according to the prior art.

FIG. 10 is a partial cross-sectional view of a conventional welding wire take-out member.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Pail pack 2 Outer cylinder part 3 Bottom part 4 Laminated body 5 Annular pressing plate 6 Thin elastic member 8 Projecting piece 8a Short projecting piece 8b Long projecting piece 7, 9, 10 Elastic body (prior art) 11 Inner wall of pail pack W Wire A Maximum difference between the inner wall position of the pail pack and the outer peripheral position of the annular pressing plate B Short protrusion length C Long protrusion length D Width of the thin plate elastic member that contacts the inner wall of the pail pack

Claims (3)

[Claims] 1. A take-out member for a welding wire, which is coiled and stacked in a single-cylinder-shaped pail pack,
An annular pressing plate, which is placed on the upper end of the stack of welding wires so as to form a gap between the inner wall surface of the pail pack and descends together with the upper end of the stack to press the stack, and the annular press plate. Thin plate-like elastic members projecting toward the inner wall of the pail pack are provided at least at three locations on the outer peripheral portion, and the thin plate-like elastic members have a plurality of projecting pieces extending in the inner wall direction at predetermined intervals. A welding wire take-out member having a structure in which a tip portion is in contact with an inner wall of a pail pack. 2. The thin plate-shaped elastic member has a projection piece consisting of a short projection piece and a long projection piece.
A member for taking out the welding wire as described above. 3. The maximum difference A between the inner wall position of the pail pack and the outer peripheral position of the annular pressing plate, the short protruding piece length B and the long protruding piece length C of each thin plate-like elastic member from the outer peripheral end of the annular pressing plate. The relation with is A <B and B / C is 0.3-
The take-out member for a welding wire according to claim 2, wherein the width D is 0.7 and the width D of the thin plate-shaped elastic member that comes into contact with the inner wall of the pail pack is 50 to 100 mm.