JPH0630330B2 - Winding device for metal band - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a winding device for winding a metal strip, for example, for making electronic components.

(Prior Art) For example, some film capacitors, which are electronic components, are formed by winding a metal band in a coil shape.

Conventionally, the formation of such a film capacitor has been performed as follows. That is, a slit is put in a round bar having an outer diameter corresponding to the core inner diameter, the end of the plastic film is first sandwiched between the slits, and the plastic film is wound around the round bar about 2 to 3 times. Then, the starting end of the metal strip is wound around the round bar together with the plastic film, and the plastic film is cut when the starting end of the metal strip is fixed to the round bar. And
When the metal strip is wound around the round bar alone for a predetermined length, the end of the metal strip is fixed with an adhesive tape or an adhesive.

After winding a metal strip of a specified length in this way, pull out the round bar from the center and remove the plastic film remaining on that portion by hand or by incineration to remove the film capacitor of the metal strip. I am trying to form a core.

However, according to such a means, when the round bar is pulled out from the wound metal strip, the plastic film remains in the inner diameter portion, so that the plastic film is removed by a means such as manual work or incineration as described above. Must. Therefore, it takes a lot of time and labor for the removal work, which may cause a decrease in productivity. In addition, since the plastic film must be wound before winding the metal strip on the round bar, this also causes a problem of lowering productivity. Further, since the starting end portion of the metal strip is fixed to the round bar by the plastic film, when the metal strip has high rigidity, the metal strip cannot be wound with a small inner diameter.

(Problems to be Solved by the Invention) As described above, conventionally, since the starting end of the metal band is fixed to the round bar with the plastic film and wound, the plastic film removal work and the winding work are performed. Need and
In addition to the possibility of lowering the productivity, there were cases where the metal band could not be wound into a small inner diameter when the metal band had high rigidity.

[Structure of the Invention] (Means and Actions for Solving Problems) In order to solve the above problems, the present invention is directed to a supply unit for supplying a metal strip and a part of a peripheral wall in a range of approximately 180 degrees in the circumferential direction. A pipe-shaped winding core notched over and a pressing rod that is inserted into the winding core and clamps and fixes the starting end of the metal band with the winding core; and the winding core and the pressing rod are driven to rotate to rotate the winding core. First drive means for winding the metal strip around the outer periphery of the core, a detection unit for detecting the length of the metal strip wound around the winding core, and a detection signal from the detection unit for moving the metal strip A cutting portion to be cut, a fixing means for fixing the end portion of the metal strip cut by the cutting portion to the wound portion, and the pressing rod is connected to the axial direction and the winding core intersecting the axial direction. Drive it away,
When the starting end of the metal strip is clamped and fixed to the winding core, the pressing rod is driven in the direction of joining to the winding core, and if the end portion is processed by the fixing means, the pressing is performed from the metal strip. A metal band winding device, comprising: a second driving unit that drives the rod in a direction of pulling out the rod. The metal strip can be wound without using a plastic film.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.
The metal band winding device shown in FIGS. 1 and 2 comprises a main body 1. On the front surface of the main body 1, a ribbon spool 3 as a supply unit is provided, around which a metal band 2 such as amorphous metal is wound.
Is rotatably provided. The metal band 2 led out from the ribbon spool 3 is led to the drive unit 6 via the first to fourth four guide rollers 4 a to 4 d and the clamper 5. The first guide roller 4a is movably provided by a tensioner 7, and the tension of the metal band 2 can be adjusted. A detection unit 8 for detecting the number of rotations is connected to the third guide roller 4c. The detection unit 8 causes the third guide roller 4 to move.
The rotation speed of c, that is, the feed length of the metal strip 2 is detected.

The clamper 5 includes a fixed piece 9, a movable piece 11 that is rotated so that one end of the clamper 5 is brought into contact with and separated from the fixed piece 9, and a first piece that rotates the movable piece 11. Of the movable body 1 shown by the chain line in the figure.
It is provided in 3. The movable body 13 is driven by a drive mechanism (not shown) in a direction in which the movable body 13 approaches and separates from the drive unit 6 indicated by an arrow in FIG.

A cutting unit 1 is provided between the clamper 5 and the driving unit 6.
4 are provided. The cutting portion 14 includes a cutter 15 and the metal band 2 indicated by an arrow in the drawing.
Second cylinder 1 driven in a direction orthogonal to the traveling direction of the vehicle
6 and 6.

The drive unit 6 has a winding core 17 which is rotationally driven by a pulse motor (not shown). As shown in FIG. 3, the winding core 17 is made of a pipe material, and the tip end portion thereof is formed into a fitting portion 18 having a semicircular cross section by cutting the peripheral wall over approximately 180 degrees in the circumferential direction. A pressing rod 19 is arranged above the winding core 17 with its tip end facing the fitting portion 18 of the winding core 17. The pressing rod 19 is driven by the third cylinder 21 via the movable member 20 in the radial direction of the winding core 17 as shown by the arrow in FIG. 3, and is also driven in the axial direction by the fourth cylinder 22. It is like this. When driven by the third cylinder 21 in the radial approaching direction,
When the tip portion of the pressing rod 19 is fitted into the fitting portion 18 and is driven in the axially separated direction by the fourth cylinder 22 in the fitted state, the tip portion of the pressing rod 19 is moved to the above-mentioned position. It is adapted to be removed from the fitting portion 18 of the winding core 17. Then, with the pressing rod 19 fitted to the winding core 17, these are joined by a clamper (not shown),
In this state, the winding core 17 and the pressing rod 19 can be integrally rotated.

In the vicinity of the fitting portion 18 of the winding core 17, an electrostatic energy storage type welding mechanism 25 as a processing means is arranged. The welding mechanism 25 includes a lower electrode body 26 and an upper electrode body 27 that sandwich the metal strip 2 wound around the fitting portion 18 as described later. The lower electrode body 26 is composed of a receiving electrode 29 made of copper or phosphorus alloy or the like and having a V groove 28 formed therein, and a fifth cylinder 31 for driving the receiving electrode 27 in a direction of moving toward and away from the fitting portion 18. Consists of.

The upper electrode body 27 has a holding case 32. The holding case 32 is made of an insulating material and is formed in a box shape whose lower end surface is open, and a pressing body 33 also made of an insulating material is slidably held therein. That is,
At the upper and lower ends of the pressing body 33, long holes 34 penetrating in the width direction are formed respectively, and a support shaft 35 which is laid between the side walls of the holding case 32 is fitted into the long holes 34. . In addition, between the upper end surface of the pressing body 33 and the inner surface of the holding case 32, the spring 3 biasing the pressing body 33 in the projecting direction.
6 is provided. Further, the pressing body 33 is provided with a plurality of, in this embodiment, two housing holes 37 in the vertical direction. A pressure electrode 39 having a tungsten tip 38 attached to the lower end of each of the accommodation holes 37 is non-slideably held by the support shaft 35. Further, a sixth cylinder 41 is connected to the holding case 32, so that the upper electrode body 27 is driven in a direction in which the upper electrode body 27 comes into contact with and separates from the fitting portion 18 of the winding core 17. Then, these lower electrode body 26 and upper electrode body 27
When the metal strip 2 wound around the fitting portion 18 of the winding core 17 is driven by driving in such a manner that the
The spot of the tungsten tip 38 is spot-welded.

A photoelectric detector 42 is arranged near the upper electrode body 27. This photoelectric detector 42 detects the length of the rebound portion 2a generated at the end of the metal strip 2 wound by the first spot welding as shown in FIG. Even when the metal core 2 is cut by the cutting portion 14 and then the winding core 17 is rotated in accordance with the unwinding length, the rebound portion 2a is generated due to variations in the shape of the metal belt 2 and the winding tension. Inevitably, the length is about 5 mm, and when the photoelectric detector 42 detects the length of the rebound portion 2a, the detection signal causes the core 17 to indicate the length of the rebound portion 2a. It is rotated by an appropriate angle, and a portion within 1 mm from the end of the bounce portion 2a corresponds to the tungsten tip 38 of the upper electrode body 26, and that spot welding is performed again. Therefore, it is possible to eliminate the rebound portion 2a from the metal strip 2 which is wound and then terminated, as shown in FIG.

Next, the operation of winding the metal strip 2 will be described. First, the clamper 5 holding the end portion (starting end portion) of the metal strip 2 is driven in a direction of approaching the winding core 17, and the starting end portion thereof is a fitting portion of the winding core 17 as shown in FIG. 9 (a). Located above 18. Then, the pressing rod 19 is driven in the descending direction by the third cylinder 21, and its end portion engages with the fitting portion 18 as shown in FIG. 9 (b). As a result, the starting end portion of the metal band 2 is clamped and fixed by the inner surface of the fitting portion 18 and the end portion of the pressing rod 19.

In this way, when the starting end of the metal strip 2 is sandwiched between the winding core 17 and the pressing rod 19, the winding core 17 and the pressing rod 19 are held.
After being integrally connected by a clamper (not shown), they are rotationally driven in the direction shown by the arrow in FIG. 9 (b). As a result, the metal band 2 is wound around the outer peripheral surfaces of the fitting portion 18 of the winding core 17 and the pressing rod 19 as shown in FIG. 9 (c).

When the winding length of the metal strip 2 reaches a predetermined length and this is detected by the third guide roller 4c, the rotation of the winding core 17 and the pressing rod 19 is stopped by the detection signal. At the same time, the clamper 5 operates to hold a portion of the metal strip 2 upstream of the cutting portion 14 by a predetermined length, and the cutting portion 14 is driven to wind the metal strip 2 by the cutter 15. It is cut leaving a portion not to be cut to a predetermined length.

When the metal strip 2 is cut, the winding core 17 and the pressing rod 19 are rotated again by the number of rotations corresponding to the length of the unwound portion, and the metal strip 2 is wound previously. The part that did not exist will be wound. When the winding of that portion is completed, as shown in FIG. 9D, the lower electrode body 26 and the upper electrode body 27 of the welding mechanism 25 are driven toward each other, and the wound metal strip 2 The pressure is sandwiched between the receiving electrode 29 and the pressure electrode 39, and the tungsten tip 38 of the pressure electrode 39 spot-welds the end portion of the metal strip 2. At this time, the rebound portion 2a of about 5 mm is formed at the terminal end of the metal strip 2 as described above, and the length thereof is detected by the photoelectric detector 42. Then, after the winding core 17 and the pressing rod 19 are rotated in the direction indicated by the arrow in FIG. 9 (d) at an angle corresponding to the length of the rebounding portion 2a by the detection signal, within 1 mm from the end thereof. Spot is welded again. As a result, as shown in FIG. 9 (e), the bouncing portion 2a at the end of the wound metal strip 2 can be eliminated.

When the end portion of the metal strip 2 is processed in this manner, the fourth
The pressing rod 19 is driven by the cylinder 22 in the direction to move away from the fitting portion 18 of the winding core 17, whereby the pressing rod 19 is pulled out from the wound metal band 2 as shown in FIG. 9 (f). Be done. At this time, the pressing rod 19
Since only about half of its outer peripheral surface is in contact with the metal band 2, the metal band 2 can be extracted with a light force and without breaking the winding state of the metal band 2.

When the pressing rod 19 is pulled out in this manner, the metal strip 2 comes into contact with the winding core 17 only about half of its inner peripheral surface. By sliding it in the direction shown by the arrow in Fig. 9 (f),
It can be removed from the core 17.

Although the end of the metal strip 2 is fixed by spot welding in the above embodiment, it may be fixed by adhesive or tape.

EFFECTS OF THE INVENTION As described above, according to the present invention, the starting end of the metal band is clamped by the pipe-shaped winding core with a part of the peripheral wall cut out and the pressing rod fitted into the winding core, and the state is maintained. The metal strip is wound by rotating the winding core and the pressing rod. Therefore, since the metal strip can be wound without using a plastic film as in the conventional case, not only the workability can be improved but also the metal strip having high rigidity can be surely wound. be able to.

Further, a part of the peripheral wall of the winding core is cut out in a range of approximately 180 degrees in the circumferential direction, a pressing rod is fitted therein, and the starting end portion of the metal band is clamped and fixed for winding. Therefore, after winding the metal strip, the pressing rod and the core can be relatively easily extracted from the metal strip. Further, since the first drive means and the second drive means are provided, the work of winding the start end of the metal strip by sandwiching the start end of the metal strip with the retainer rod and the winding core, and the retainer rod and the roll from the wound metal strip. The work of extracting the core can be automated.

[Brief description of drawings]

The drawings show one embodiment of the present invention, FIG. 1 is a schematic view for explaining the operation, FIG. 2 is a front view of the apparatus, FIG. 3 is a side view of a winding core and a holding rod, and FIG. Is a front view of the welding mechanism, FIG. 5 is a side cross-sectional view of the same, FIG. 6 is a perspective view of the wound metal strip after the first spot welding, and FIG. 7 is a front view of the same. Similarly, FIG. 9 (a) to FIG. 9 (f) are explanatory views sequentially showing the operation of winding the metal strip, in the state where the second spot welding is performed. 2 ... Metal strip, 3 ... Ribbon spool (supply unit), 6 ...
... drive section, 17 ... winding core, 18 ... fitting section, 19 ... presser rod, 25 ... welding mechanism (processing means), 42 ... photoelectric detector (detection section).

Claims (1)

[Claims] 1. A supply part for supplying a metal band, a pipe-shaped winding core in which a part of a peripheral wall is cut out over a range of approximately 180 degrees in the circumferential direction, and a starting end of the metal band fitted into the winding core. A pressing rod for sandwiching and fixing a portion of the core with the winding core; first driving means for rotating the winding core and the pressing rod to wind the metal strip around the outer circumference of the winding core; and winding the winding core around the winding core. The detection part for detecting the length of the metal band to be rotated, the cutting part for cutting the metal band by the detection signal from the detection part, and the end part of the metal band cut by the cutting part are wound. When fixing means for fixing to the portion and the holding rod are driven in the axial direction and in the direction of approaching and separating from the winding core intersecting the axial direction to clamp and fix the starting end of the metal strip with the winding core. Drive the pressing rod in the direction of joining to the core. Winding apparatus of the metal strip, characterized by comprising a second driving means for driving in a direction that withdrawn the presser rod from the metal strip if the termination is processed by the fixing means while.