Fixing fixture of throwing machine table and window-type press board thereof

Abstract

The invention relates to a fixing fixture of a throwing machine table and the window-type press board thereof. The window-type press board is used for pressing the upper surface of a bearing board, and comprises a press board body, at least one window hole, and at least one cushion device, wherein the window hole passes through the press plate body for exposing the partial upper surface of the bearing board, the cushion device is arranged outside the window hole and comprises a butting end, when the window-type press board presses the upper surface of the bearing board, the butting end supports against the upper surface of the bearing board; when the window-type press board is lifted up, the butting end pushes the bearing board away downwards to prevent the bearing board from being liftedup along with the window-type press board. Thus, the warping of the bearing board can be avoided, and thereby improving the yield.

Description

technical field [0001] The present invention relates to a fixing jig and its pressing plate, in detail, to a fixing jig of a wire bonding machine and its window-shaped pressing plate. Background technique [0002] Referring to FIG. 1 , there is shown an exploded view of a fixed jig 1 of a known wire bonding machine. The fixing jig 1 is used to fix a carrier board 21 to facilitate the wire bonding process. The carrier board 21 includes an upper surface 211 and a lower surface 212 , and a plurality of chips 22 are adhered to the carrier board 21 . The fixture 1 includes a hot plate 11 , two rails 12 and a window-shaped pressing plate 13 . The heating plate 11 includes an adsorption surface 111 for supporting the lower surface 212 of the carrying plate 21 and providing heat energy to the carrying plate 21 . The rails 12 are located on two sides of the heating plate 11 to support two sides of the carrying plate 21 . The window-shaped pressing plate 13 is used for pressing the...

AI Technical Summary

Problems solved by technology

Yet this known solution produces another shortcoming, because these side pressure strips 1331 can be pressed to the part of this carrying plate 21 between these rails 12 and this heating plate 11, so when this window type pressing plate 13 increases the pressure of pressing down , these side pressure strips 1331 will press part of the carrier plate 21 into the gap between the rails 12 and the hot plate 11, and produce indentations on the carrier plate 21, and cause the carrier plate 21 to warp (as shown in Figure 5 shown)

In this way, in the subsequent molding process, the liquid sealing material will overflow through the indentation, resulting in packaging failure

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