JPH0338217Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Technical field This invention relates to a reel for winding up hoop materials such as multi-pin lead frames used in the manufacture of SIPs and DIPs.

(b) Technical field The conventional take-up reel used for winding up the hoop material of the above type has flanges provided on both sides of an inner cylinder that serves as a take-up core.

When winding a hoop material with a conventional take-up reel, before starting winding, the starting end of the hoop material is wound around the inner cylinder once, and the hoop material is overlapped at the end of the winding. By pasting the starting end of the hoop material onto the inner cylinder using adhesive tape, or by bending the starting end of the hoop material and inserting it into the notch formed in the inner cylinder, the inner cylinder becomes the hoop material when winding starts. I was trying not to spin around.

However, the direction in which the starting end of the hoop material is wrapped once around the inner cylinder requires a buffer part on the hoop material whose length corresponds to the outer circumferential dimension of the inner cylinder. The disadvantage is that the adhesive may remain attached to the inner cylinder, and the method of bending and inserting the starting end of the hoop material into the notch of the inner cylinder has the disadvantage that the starting end of the hoop material is bent. Furthermore, all of these methods had poor workability.

(c) Purpose of the invention This invention is intended to improve the above-mentioned conventional drawbacks, and by providing the inner cylinder with a suction function, it is possible to prevent the inner cylinder from idling with respect to the starting end of the hoop material. The purpose is to provide a take-up reel that does not require a take-up reel.

(d) Structure and effect of the invention In order to achieve the above object, the take-up reel of this invention has an inner cylinder with approximately the same width as the hoop material, and the hoop material is spread over the entire circumference of the inner cylinder. It is characterized by having magnetic properties that attract it.

With this configuration, according to this invention, when the tip of the hoop material is fed into the inner cylinder at the start of winding, no matter what the rotational position of the take-up reel is, the tip of the hoop material is It is absorbed into the inner cylinder. The hoop material is wound onto the inner cylinder by the subsequent rotation of the inner cylinder. This eliminates the conventional work of wrapping the starting end of the hoop material around the inner cylinder once, pasting it with adhesive, or bending the starting end of the hoop material and inserting it into the notch in the inner cylinder, improving work efficiency. improves. In addition, the buffer part of the hoop material is no longer necessary, and there is no room for the adhesive to adhere or to cause bending marks. Because of this, it becomes possible to automate the winding of the hoop material. moreover,
By making the entire circumference of the inner cylinder magnetic, winding can be started regardless of the rotational position of the take-up reel, and the hoop material is attracted to the entire surface surrounding the inner cylinder. is maintained, the suction force becomes strong and the reliability of automated work can be improved.

In addition, since the hoop material is a magnetic material, the magnetic force that has passed through the hoop material that has been wound up attracts the hoop material that is newly wound up. The parts will no longer sag.

(e) Embodiment FIG. 1 is a longitudinal sectional side view of a take-up reel which is an embodiment of this invention, and FIG. 2 is a partially cutaway front view thereof. As shown in these figures, the take-up reel 1 is
Flanges 3, 3 are provided on both sides of the inner cylinder 2, and a rubber magnet 4 is wound around the inner cylinder 2, thereby making the inner cylinder 2 magnetic. The rubber magnet 4 has magnetism strong enough to attract and attract the hoop material 10 as shown by the arrow in FIG. 2 when it approaches the hoop material 10. Note that 5 indicates the rotation axis of the take-up reel 1.

According to such a take-up reel, the hoop material 10
By simply bringing the starting end portion of the inner tube 2 close to the inner tube 2, the starting end portion is attracted to the inner tube 2 by the magnetism imparted to the inner tube 2 by the rubber magnet 4 and is attracted to the inner tube 2. Therefore, if the inner cylinder 2 is rotated, the inner cylinder 2
The hoop material 10 is wound around this inner cylinder 2 without idling.

In the above-described take-up reel 1, the rubber magnet 4 is wound around the inner cylinder 2 as a means for imparting magnetism to the inner cylinder 2, but there are other means for imparting magnetism to the inner cylinder 2. There are methods such as making the inner cylinder 2 a magnet or providing the inner cylinder 2 with an electromagnet.

FIG. 3 shows an automated device for winding up a hoop material 10 such as a multi-pin lead frame using the take-up reel 1 during a semiconductor manufacturing process. The automated device shown in the figure guides a hoop material 10, which has been subjected to a predetermined process by a processing device 11, through a guide 12 to a take-up reel 1, and winds it up with the take-up reel 1. Feed rollers 13 and 14 are provided at the front and rear of the processing device 11, respectively, and the take-up reel 1 is provided with a presser plate 16 that is moved in and out by a solenoid 15.

In such an automated device, the take-up reel 1
When the starting end of the hoop material 10 approaches, the solenoid 15 acts and the presser plate 16 protrudes as shown by arrow a, pressing the starting end of the hoop material 10 against the inner cylinder 2 of the take-up reel 1 and closing the inner cylinder. Let it adsorb to 2. The hoop material 10 is then wound onto the take-up reel 1 by rotation of the take-up reel 1. When automatically winding the hoop material 10 in this way,
By forming a slack 10a in the hoop material 10 being fed between the feed roller 14 and the guide 12, even if there is a slight difference between the feed speed of the feed roller 14 and the winding speed of the take-up reel 1, Difference is slack 10
This is absorbed by the expansion and contraction of a, which has the advantage that the tension of the hoop material 10 is always uniform when it is wound on a reel. Also, at the start of winding, the slack 10a of the hoop material 10 fed by the feed roller 14 after the starting end portion of the hoop material 10 is attracted to the inner cylinder 2 of the take-up reel 1 is kept at a constant width. The take-up reel 1 is stopped until the hoop material 10 is fed, and a sensor (not shown) detects that the slack 10a has become a certain width by feeding the hoop material 10. At that point, the solenoid 15 is activated. Alternatively, the holding plate 16 may be pulled in to start the rotation of the take-up reel 1.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view of a take-up reel according to an embodiment of this invention, FIG. 2 is a partially cutaway front view thereof, and FIG.
The figure is a schematic diagram showing an automated device for winding up hoop material. 1... Take-up reel, 2... Inner cylinder, 4... Rubber magnet, 10... Hoop material.

Claims (1)

[Scope of utility model registration request] A take-up reel that winds up a hoop material that is a ribbon-shaped magnetic material, and has an inner cylinder that is approximately the same width as the hoop material, and has a magnetic material that attracts the hoop material over the entire circumference of the inner cylinder. A hoop material take-up reel characterized by being tinged with.