JPS623072B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application This invention relates to a device for latching and fixing the winding end of a wire rod wound around a spool to the spool side.

B. Prior art For example, metal wires such as metal wires (including single wires, stranded wires, and coated wires), which are the welding material fed to a welding machine, are arranged in long, fixed lengths and wound around a spool. storage, transportation, etc. The spool for winding this type of wire rod has disk-shaped flanges on the outer periphery of both ends of the winding drum, and the winding end of the wire rod wound around this spool is generally latched and fixed to one flange. This prevents the twisted wire from becoming loose.

Examples of such wire rod winding end latching devices include the following. That is, as shown in FIGS. 1 and 2, after winding a wire rod 2 around a spool 1 to a predetermined length, a pusher is inserted from the inside into a locking hole 4 formed through a part of the peripheral edge of one flange 3 of the spool 1. 5, push in a part of the end of the winding to form a U-shaped bent part 2' that is locked and fixed in the locking hole 4, and then cut a suitable length from the bent part 2' with a cutter. There is a device that cuts at 6,6. Although this device is mechanically simple, it has the disadvantage that only a portion of the wire 2 is fitted into the latching hole 4 in a U-shape, so that the latching force is weak and it is easy to pull out.

Therefore, as an improved wire rod winding end latching device that eliminates the above-mentioned drawbacks, the winding end of the wire rod 2 is formed into a hook shape as shown in FIG. For example, a device as shown in FIG. 4, which is hooked onto a hooking hole 9 formed in a part of the peripheral edge of the holder 8, has been proposed and put into practical use. This is done by disposing a fixed blade 10 on the outside of the latch hole 9 and a rotary blade 11 on the inside, and when the winding end of the wire rod 2 comes along the inside of the latch hole 9, the rotary blade 11 is moved as shown in solid line in FIG. The fixed blade 1 is rotated from the position shown by to the position shown by the chain line, and during this period a part of the wire rod 2 is pushed into the hooking hole 9.
0 and the rotary blade 11 slidingly engage each other, and the end portion 2'' of the winding of the wire rod 2 immediately after cutting is bent into a hook shape using the inner peripheral surface 11' formed on the concave curved surface of the rotary blade 11. This device rotates and inserts the rotary blade 11 into the locking hole 9, presses the end portion 2'' of the hook-shaped winding against one end of the locking hole 9, and then returns the rotary blade 11 to its original position.

In this device shown in FIG. 4, the end 2'' of the wire winding is hooked and hooked and fixed in the hooking hole 9, so the wire 2 is difficult to come off from the hooking hole 9 and reliability is increased.However, The end of the wire winding protrudes outward on the outer surface of the flange 8, and since the end of the wire winding has a sharp finish when cut, there is a risk of injury if the end is touched when carrying the spool. In addition, the hooking hole 9 needs to have a width that accommodates the rotary blade 11 and a length that is greater than the length of the hook-shaped winding end 2'' of the wire 2, which requires a considerably larger area compared to the thickness of the wire 2. The hole needs to be shaped like an elongated hole, which causes problems such as deteriorating the appearance of the spool 7, and making it easy for moisture etc. to enter the inside through the hooking hole 9, making the wire rod 2 wound in alignment easy to rust.

C. Purpose of the Invention The present invention was made in view of the above-mentioned problems, and the hooking hole of the flange of the spool is made into a small hole with an inner diameter slightly larger than the wire diameter of the wire rod, and the end of the winding of the wire rod is firmly hung in this small hole. An object of the present invention is to provide a winding end latching device for a wire rod.

D. Structure of the Invention The present invention is directed to a hooking hole formed in a part of the periphery of the flange of the spool by bending the tip and the vicinity of the winding end of the wire rod wound on the spool in the same direction. After inserting it, curve it into a semicircular shape so that the tip face faces the outer surface of the flange, and then hook it into the latching hole.
A first bending part that pinches and cuts the wire rod wound around the spool near the end of the winding with a fixing device, and at the same time bends the cut end of the winding a little toward the flange side having the hooking hole; , a second bending part that bends the wire winding end end toward the latching hole from a fixed position near the nose bending end, and supports the first and second bending parts so as to be able to reciprocate in the spool axis direction. A bending part support mechanism and a concave curved shape that is fixedly arranged on the outer surface of the flange with the end facing the latch hole and that the wire inserted from the latch hole is slid and bent into a substantially semicircular shape. It consists of a curved surface. According to such a device, the hooking hole formed in the flange of the spool can be made small enough to allow the nose-bent tip of the wire to be inserted through it, and the wire can be wound after being inserted into the hooking hole. Since the terminal end is curved into a semicircular shape so that its tip faces the outer surface of the flange, handling of the spool is safe and the winding end of the wire rod can be securely secured.

E. Example In FIGS. 5 and 6, 12 is a spool;
13, 13 are flanges at both ends of the spool 12;
Reference numeral 4 designates a locking hole formed through a part of the peripheral edge of one flange 13, and reference numerals 15, 15 designate a pair of holders in a winding machine that position and clamp the flanges 13, 13 of the spool 12 coaxially and rotate them appropriately. When the empty spool 12 is positioned and supplied between the holders 15, 15, the winding start end of the wire rod 2 is latched onto a part of the winding drum (not shown) of the spool 12, and then the spool 12 is moved between the holders 15, 15. is rotated in one direction so that the wire rod 2 is wound in multiple layers around the spool 12 in an aligned manner, and when the winding end of the wire rod 2 comes near the locking hole 14, the winding operation is stopped.

16 is a wire rod winding end latching device according to the present invention;
The winding end portion 2 of the wire rod 2 extending linearly on the spool 12 which is stationary at a fixed position after the winding operation is completed.
first and second bending parts 17 and 18 that sandwich and bend a in two parts; a swingable bending part support mechanism 19 that supports the first and second bending parts 17 and 18; It is composed of a curved surface 20 fixed to the outer surface of the flange 13 where the latching hole 14 is located, facing the latching hole 14,
Specific examples of each part will be explained with reference to FIG. 6 and subsequent figures. In Fig. 6, 21 is the bottom plate of the bending part support mechanism 19, 22 is a slide installed on the lower surface of the bottom plate 21 so as to be able to reciprocate at a constant stroke, and a bird's beak shape is provided at one corner of the front part of the slide. 1st
The other corner of the cutting blade 23 is formed with a first bent surface 24 chamfered into an arc shape. 25 is the bottom plate 2
The second cutting blade fixed at 1 corresponds to the first cutting blade 23 described above. 26 is the bottom plate 2 near the second cutting blade 23;
1 is a rotatably mounted hook-shaped rotary blade, the tip of which is formed in the shape of a curved hook facing the first cutting blade 23, and is normally temporarily fixed in a fixed position as shown in FIG. These first and second cutting blades 23, 25 and rotary blade 26 constitute the first bending portion 17. 27
is a rectangular projection protruding from the bottom surface of the bottom plate 21.
A corner portion is formed as a second folding surface 28 corresponding to the first folding surface 24 . Reference numeral 29 denotes a pressing body facing the inner surface of the projection 27, which is attached to the front surface of the slide 22 via a spring 30, and is normally arranged with a gap between it and the projection 27 so that the wire 2 can fit therebetween, and as the slide 22 moves forward. Move forward and move the wire 2 to the protrusion 27
It is elastically pressed against and clamped. This pressing body 29 and the first and second bending surfaces 24 and 28 constitute the second bending portion 18 . In addition, the slide 24 and the rotary blade 2
The drive source 6 is built into the bending part support mechanism 19.
This bending part support mechanism 19 includes the first and second bending parts 1
7 and 18, and has the function of reciprocating the entire body in the axial direction of the spool 12.

Further, the curved surface 20 is formed, for example, on a part of the inner surface of the holder 15 that holds the flange 13 having the latching hole 14 therebetween. The curved surface 20 is a substantially semicircular concave curved surface with one end facing the locking hole 14 and extending to a position away from the locking hole 14 .

The first and second bent portions 17 and 18 are gaps in which the corners of the first cutting blade 23, the second cutting blade 25, the rotary blade 26, and the first bending surface 24 and the second bending surface 28 are always aligned in a straight line. g, g', and extends tangentially outward from the vicinity of the latching hole 14 of the spool 12 which has been stopped after winding is completed. g, g′ fit together (5th
6 and 6), thereafter, the wire winding end end latching operation is performed as shown in FIGS. 7 to 9.

First, only the slide cage 22 starts moving forward. Then, the pressing body 29 also moves forward, and first, this pressing body 29 presses a part of the wire 2 against the protrusion 27, and the wire is held between them. Immediately after this, the first cutting blade 23 reaches the second cutting blade 25. The wire is then cut. As the slide 22 moves further forward, as shown in FIG. 7, the tip portion 2b of the end portion 2a of the wire rod winding immediately after cutting is pushed between the second cutting blade 25 and the rotary blade 26 by the first cutting blade 23, and is slightly removed. Only the nose is bent outward. At the timing of completion of this processing, the rotary blade 26 rotates to the position indicated by the chain line in FIG. As shown, the end 2a of the wire rod winding is bent 90 degrees toward the locking hole 14 along with the second bending surface 28. When the 90° bending is completed, the slide 22 stops moving forward. During this time, the pressing body 29 continues to press the wire 2 against the protrusion 27.

Next, the first and second bent portions 17 and 18 in the state shown in FIG.
The bending part support mechanism 19 moves forward while holding the 90° bent end part 2a of the wire rod from its nose-bent tip part 2b to the latching hole 14 and the bending surface 20.
Push it in a fixed stroke. Then, as shown in FIG.
The outer surface of the flange 13 is formed into a substantially semicircular shape in the orthogonal direction, and is hooked and fixed in the hook hole 14. After that, move back the slide 22 to release the pressing body 29 from the wire rod 2, raise the bending part support mechanism 19 by a certain pitch, remove the first and second bending parts 17 and 18 from the spool 12, and then remove the holder. If you take out the spool 12 from 15, 15, the 10th
A spool 12 on which wire rod 2 is wound in an aligned manner as shown in the figure.
is obtained.

Note that the present invention is not limited to the above-mentioned embodiments, but particularly the first,
It is also possible to make changes such as making the second bent part independent.

F. Effects of the Invention As described above, according to the present invention, the latching hole formed in the flange of the spool for latching the end of the wire winding may be a small hole with an inner diameter slightly larger than the wire diameter of the wire rod, which improves the appearance of the spool. This prevents moisture from entering through the hooking hole, and provides good protection for the wire inside the spool.
In addition, since the end of the wire winding is bent into a semicircular shape and hooked into the small hooking hole, the latching performance is improved, and since the end of the wire winding faces the outer surface of the flange, the spool is safe to handle.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a spool for explaining an example of a conventional wire winding end latching device, and Fig. 2 is a plan view of a spool.
The right side view of the figure, FIG.
FIG. 4 is a partially enlarged plan view showing a device for hooking the end of wire winding on a spool in FIG. 3, FIG. 5 is a front view showing an embodiment of the present invention, and FIG. 6 is A of FIG. −
A sectional view taken along line A, FIGS. 7 to 9 are operation diagrams of the apparatus shown in FIG. 6, and FIG. 10 is a plan view of the spool after winding is completed using the apparatus shown in FIG. 2... Wire rod, 2a... Winding end end, 12... Spool, 13... Flange, 14... Latching hole, 1
6... Wire rod winding end latching device, 17... First bent part, 18... Second bent part, 19... Bent part support mechanism, 20... Curved surface.

Claims (1)

[Claims] 1 A device that locks and fixes the terminal end of a wire rod wound around a spool in a locking hole formed through a part of the peripheral edge of the flange of the spool, which clamps the wire rod wound around the spool near the end of the winding. a first bending part for bending the cut winding end end to the flange side having the hooking hole at the same time as cutting, and a fixed position near the wire rod winding end end bent at the first bending part; A second bending part that bends the tip end of the wire toward the hooking hole, a bending part support mechanism that supports the first and second bending parts so that they can reciprocate in the spool axis direction, and A concave curved surface is arranged with the end facing the stop hole, and the end of the wire winding, which is held and bent by the first and second bending parts, is inserted through the stop hole. A winding end latching device for a wire rod, characterized in that it is pushed toward a curved surface, bent into a substantially semicircular shape outside the latching hole, and latched and fixed.