JPH0227565Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cassette that holds a magazine that accommodates lead frames.

[Prior Art] In die bonders, wire bonders, etc., in order to supply and collect lead frames, a magazine containing a large number of lead frames stacked in parallel is used, and the magazine is mounted on a loader to supply the lead frames one by one.
The finished lead frame is collected into an empty magazine attached to an unloader.

[Problems that the invention aims to solve] However, since lead frames come in various sizes, the magazines also have different sizes, and in the past, each time a magazine of a different size was replaced, the magazine holding set had to be redone, and The center had to be aligned, which required a lot of effort.

The object of the present invention is to eliminate the above-mentioned problems of the conventional cassette and to provide a cassette in which magazines for lead frames of different sizes can be easily mounted while aligning the centers.

[Means for solving the problem] The present invention consists of a bottom plate that is supported so as to be able to rise and fall, and two holding plates that are held perpendicularly to the bottom plate and spaced apart from each other in parallel. In a cassette in which a magazine is mounted between plates, the holding plate has a pressing holding function in which both sides of the magazine are pressed and held between the two holding plates with elastic force, and a center holding function in which the magazine is held on a predetermined center line. This is a magazine cassette for a lead frame characterized by having a configuration that combines the following.

[Example] Embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, a wire bonder 1 performs wire bonding on an IC chip on a lead frame fed along a guide rail 4 using a bonding tool 3 held in a bonding head 2.

5 is a loader, and a large number of lead frames 14
The lead frame 14 is supplied to the guide rail 4 one by one. An unloader 7 holds an empty magazine 6 and receives and stores the worked lead frame 14 sent along the guide rail 4.

2, 3 and 4 show details of the loader 5. FIG. Reference numeral 8 denotes a cassette that holds the magazine 6, and is supported so as to be movable up and down by a lifting mechanism such as a cylinder 9. The cassette 8 has a bottom plate 10 and two holding plates 11 and 12 held perpendicularly to the bottom plate 10 and parallel to each other.
The magazine 6 is pressed and held between the two holding plates 11 and 12 by leaf springs 13 and 13' provided respectively. two leaf springs 13,
Since 13' has the same elastic modulus, it has both the above-mentioned pressing holding function and center holding function, and even if magazines 6 of different widths are installed, the magazines 6 are automatically aligned on the center line.

The inside of the magazine 6 is formed into a shelf shape, and a large number of lead frames 14 are accommodated therein.
The sheets are pushed out one by one and inserted into the guide rail 4.

The shape of the guide rail 4 is as shown in FIG.

During the work, the magazine 6 is installed with the cassette 8 on the loader 5 side lowered to the lowest position. After the uppermost lead frame 14 is pushed out by the pusher 15, the cassette 8 is raised one stage and the lead frames 14 are sequentially supplied. Conversely, on the unloader 7 side, the empty magazine 6 is placed at the highest position, and the lead frame 14 is accommodated while being lowered one by one.

At this time, due to the elastic force of the leaf spring 13 on both the loader 5 side and the unloader 7 side, even magazines of different sizes can be easily and reliably held on the predetermined center line without requiring any particular adjustment work.

FIGS. 6 and 7 show another embodiment in which the holding plates 11 and 12 have both a pressing holding function and a center holding function. That is, the holding plates 11 and 12
are movable relative to the bottom plate 10, and are moved symmetrically by tapered elongated holes 17, 18 and pins 19, 20, and springs 21 hold both sides of the magazine 6 between the two holding plates 11, 12. It was designed to be maintained between Even if the dimensions of the magazine 6 change, this is automatically followed and the center position remains almost constant.

[Effects of the invention] The present invention has a pressing holding function in which the holding plate uses elastic force to press and hold both sides of the magazine between the two holding plates, and a center holding function in which the magazine is held on a predetermined center line. With this structure, the lead frame allows magazines of different sizes to be attached to the cassette easily and reliably on the predetermined center line without any special adjustment work. It is possible to provide a magazine cassette for use in magazines, which has extremely great practical effects.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a front view of a wire bonder, Fig. 2 is a front view of a loader, and Fig. 3 is a front view of a wire bonder.
4 is a plan view of FIG. 2, FIG. 5 is a sectional view of the guide rail, FIG. 6 is a sectional view of another embodiment, and FIG. 7 is a sectional view of the guide rail. It is. 1... Wire bonder, 2... Bonding head, 3... Bonding tool, 4... Guide rail, 5... Loader, 6... Magazine, 7... Unloader, 8... Cassette, 9... Cylinder, 1
0... Bottom plate, 11, 12... Holding plate, 13, 1
3'...Plate spring, 14...Lead frame, 15
... Pusher, 17, 18 ... Tapered long hole, 1
9, 20...pin, 21...spring.

Claims (1)

[Scope of utility model registration request] A bottom plate 10 supported so as to be able to rise and fall, and the bottom plate 10
In the cassette 8, which is made up of two holding plates 11 and 12 that are held perpendicularly and parallel to each other at an interval, a magazine 6 is mounted between the two holding plates.The holding plates 11 and 12 hold the magazine with elastic force. The magazine 6 is characterized by having a structure that has both a pressing holding function of pressing and holding both sides of the magazine 6 between the two holding plates 11 and 12, and a center holding function of holding the magazine 6 on a predetermined center line. Magazine cassette for lead frames.