Automatic grain discharging machine for semiconductor refrigerating sheet

Abstract

The invention discloses an automatic grain discharging machine for P-type and N-type crystal grains of a semiconductor refrigerating sheet. The automatic grain discharging machine comprises structures of an electromotor (7), a frequency converter (10), a bearing assembly (1), a base (9), a eccentric wheel (8), a connecting rod (6), a swinging arm (4), a grain discharging platform (3), and the like; three bar-shaped fixed flanges (5) and one bar-shaped movable flange (2) are arranged at the periphery of the front face of the grain discharging platform (3) so that the grain discharging platform (3) is enclosed into a rectangular recess which is large enough to arrange more than 8 grain discharging dies at one time. grains are screened and discharged by mechanical vibration, wherein the screening rate is up to 90%-95%, thereby greatly improving the grain discharging speed, enhancing production efficiency by more than 8 times, reducing the production cost, and lightening the labor intensity of workers.

Description

technical field [0001] The invention relates to a semiconductor refrigerating sheet manufacturing equipment, in particular to a semiconductor refrigerating sheet P, N type crystal grain automatic granulator. technical background [0002] Before the present invention is made, there has not been any report or use of the similar P, N-type crystal grain automatic granulator for semiconductor refrigeration chips at home and abroad. [0003] Semiconductor refrigeration sheet, also known as thermoelectric refrigeration sheet, is a semiconductor device that uses the inverse effect of semiconductor thermoelectricity to achieve the purpose of cooling (or heating). A galvanic pair (see attached for schematic Figure 4 ), when the DC current flows from the N pole to the P pole, an endothermic phenomenon occurs on the A terminal, this terminal is called the cold terminal, and the lower B and C terminals generate heat release, this terminal is called the hot terminal, if the current direc...

AI Technical Summary

Problems solved by technology

[0005] In the above-mentioned granulation process, there are two major defects: the one is that the efficiency is low

Due to the low porosity rate, it is necessary to manually replenish the grains one by one. Only one sieve mold can be operated at a time. The speed cannot be increased, and it takes a lot of time to manually replenish the grains. Generally, only 150-200 pieces can be discharged in one working day. / person, which affects the improvement of productivity; the second is that the production cost increases, in order to solve this problem, it is necessary to increase the labor of the granulation process, thus increasing the labor wage expenditure and production cost; the third is that the labor intensity is high

Due to the low porosity rate, it takes a long time to refill the grains, and the grains are small, workers are prone to visual and physical fatigue

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