Screening device used for SMD (Surface Mounted Device) thermistor production

Abstract

The invention relates to a screening device used for SMD (Surface Mounted Device) thermistor production. The screening device comprises a bottom plate, a detecting device and a screening device body;the upper end face of the bottom plate is provided with the detecting device; the upper end of the detecting device is provided with the screening device body; the screening device body comprises a support table; the middle part of the detecting device is provided with the support table; feeding holes are formed in the rear end of the upper end face of the detecting device; the feeding holes are formed by three in sequence from left to right; the front end of the upper end face of the detecting device is provided with a conveying table; the upper end of the support table is provided with a rotating motor through a motor box; and the output shaft of the rotating motor is connected with the bottom end of a screening box. The screening device disclosed by the invention is capable of solving the problems that SMD resistors cannot be screened accurately enough during magnetic screening, accepted products screened out cannot be classified further, magnetism strength of a magnetic adsorptiondevice cannot be adjusted as needed during screening, and the like, is capable of achieving a function of automatically screening the SMD resistors, and has the advantages that screening is accurate,classification is detailed and the magnetism strength is convenient to adjust.

Description

technical field [0001] The invention relates to the field of electronic components, in particular to a screening device for the production of patch thermistors. Background technique [0002] SMD resistors are scientifically called chip fixed resistors. They have the advantages of moisture resistance, high temperature resistance, high reliability, precision, and small temperature coefficient and resistance tolerance. Layer printing and drying, primary protective layer printing and drying, laser correction, secondary protective layer printing and drying, resistance code printing, vacuum sputtering, magnetic screening, resistance testing and packaging into bags, etc., and the existing production equipment is used throughout the production The magnetic screening in the process and the packaging and bagging process have the following defects. [0003] Existing production equipment uses the magnetism of nickel to screen out defective products, but the screening process uses an ad...

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Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a screening device for the production of chip thermistors, which can solve the problem that the screening of chip resistors is not accurate enough during magnetic screening, and the screened good products cannot be further classified. The magnetic strength cannot be adjusted according to the needs, etc., and the function of automatic screening of chip resistors can be realized, which has the advantages of accurate screening, detailed classification and convenient adjustment of magnetic strength

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