JPS6334270Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for accurately positioning semiconductor pellets without damaging them in a semiconductor assembly process.

As shown in FIG. 1, the conventional semiconductor pellet positioning device used in the semiconductor assembly process uses correcting claws 3 to hold down the opposing surfaces of a pellet 2 placed on a table 1, thereby preventing excessive pressure on the pellet 2. The movable range of the correction claws 3, 3 is restricted by a stopper 4 so that no force is applied. Therefore, when using this device, it is necessary to adjust the stopper 4 every time the size of the pellet 2 changes, and the adjustment must be done with a certain amount of margin to ensure safety so that the pellet 2 does not get caught. Since the movable range of the fixing claws 3, 3 is often set, it is difficult to perform accurate positioning, and the adjustment is extremely troublesome.

An object of the present invention is to provide a semiconductor pellet positioning device that eliminates the above-mentioned problems.

In order to achieve the above object, the pellet positioning device of the present invention includes a pair of correcting claws that are arranged so as to be movable forward and backward facing each other on opposite sides of the pellet, and a pair of correcting claws that are installed between both of the correcting claws. and a gauge for regulating the movable range of the correction claw,
A notch is provided on the lower surface of the correction claw within a certain length S range from the tip, and a step portion is provided to lock the end face of the gauge received in the notch, and the size P of the pellet placed on the gauge is , the relationship between the gauge dimension G and the distance S from the tip of the correction claw to the stepped portion is set as G>P+2S.

Embodiments of the present invention will be described below with reference to figures. Second
In the figure, the point that a pair of correction claws 13, 13 are installed on a table 11 so as to be movable forward and backward is the same as in the prior art. In this case, a gauge 14 is installed between both correction claws 13, 13, and the distance between both correction claws 13, 13 is regulated by the gauge 14. Each correction nail 1
Considering the thickness of the gauge 14, a certain range is cut out from the tip of the lower surface of the gauge 14, and the gauge 14 is cut out at the end of the cutout.
A stepped portion 15 is provided, with which the end surfaces of the two abut against each other.
The pellet 12 is placed on the upper surface of the gauge 14 and is supported and positioned by both correction claws 13, 13. The dimension G of the gauge 14 is determined by the dimension P of the pellet 12 and the step from the tip of the correction claw 13. Considering the distance S to 15, the relationship is set as G>P+2S (1).

In the proposed device, a gauge 1 is placed on the table 11.
When the correcting claws 13, 13 are moved toward the pellet 12, each correcting claw 13 comes into contact with the end face of the gauge 14 before sandwiching the pellet 12, so that the pellet 12 is placed on top of the pellet 12. 1
2 is simply pushed by the correction claws 13, 13, and is not subjected to excessive force, and is accurately positioned between the correction claws 13, 13. Further, when the size of the pellet changes due to a change in quality, it is only necessary to change the gauge to a predetermined size that satisfies the formula (1) according to the size of the pellet, and no complicated adjustment is necessary. On the other hand, since the accuracy of pellet positioning is given by equation (1), the gauge dimension G can be determined accurately by taking into account the pellet dimension P and the distance S from the tip of the correction claw 13 to the stepped portion.

As described above, this project has a gauge that regulates the movement range of the correction claws, so pellets are not caught between the correction claws, and accurate positioning of pellets is possible. This has the effect of being able to accommodate changes in types of pellets with different pellet sizes with simple operations.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a conventional positioning device, and FIG. 2 is a side view showing an embodiment of the present device. 12...Pellet, 13...Correction nail, 14...
gauge.

Claims (1)

[Claims for Utility Model Registration] A pair of correction claws are arranged so as to be able to move forward and backward facing each other with the pellet in between, and a pair of correction claws are installed between both correction claws to control the movable range of the correction claws. The lower surface of the correction claw is provided with a notch in a range of a certain length S from the tip, and a step part is provided for locking the end face of the gauge received in the notch. Dimension P of the pellet placed on
A semiconductor pellet positioning device characterized in that the relationship between the dimension G of the gauge and the distance S from the tip of the correction claw to the stepped portion is set as G>P+2S.