An anti-error feeding device for smt placement machine

Abstract

The invention discloses an error-proof feeding device for an SMT placement machine, which includes a conveying mechanism, a material retrieving mechanism and a connecting frame. The retrieving mechanism includes a feeder and a retrieving frame. The racks are connected by the second transmission shaft, and a verifier is arranged above the end of the conveying mechanism close to the feeding mechanism. The present invention adds a verifier to the current feeding device, and the verifier makes the material belt enter the feeder through the verifier. A re-inspection can be carried out before the feeder to prevent the occurrence of wrong materials. At the same time, the present invention is provided with a coil on the tape reel. When the tape reel rotates in the middle of the turntable, an induced current will be generated on the coil. Through this group of induced currents, it can be judged The moving speed of the discharge belt can judge the vibration amplitude of the discharge belt reel through the change of the induced current on the coil, and the tightness of the material belt can be controlled according to the vibration amplitude through the regulator and the first transmission shaft, so as to avoid the tension of the material belt due to tension. Breakage due to excessive force.

Description

technical field [0001] The invention relates to the technical field of SMT chip mounter feeding technology, in particular to an error-proof feeding device for an SMT chip mounter. Background technique [0002] SMT placement machine is a new type of equipment that accurately places SMT components on the circuit board by moving the placement head. Because the SMT placement machine has the characteristics of high speed, high precision, and easy automation, it has been used in the electronic assembly industry. At the same time, with the development of the electronics industry, there are more and more patch components on the circuit board, and the size is getting smaller and smaller. In order to improve production efficiency, a special feeding device is usually equipped. [0003] At present, the structure of the feeding device of the SMT placement machine is relatively simple. Usually, the material tray is placed on the Feeder, and then the SMT components on the material tray are...

AI Technical Summary

Problems solved by technology

[0003] At present, the structure of the feeding device of the SMT placement machine is relatively simple. Usually, the material tray is placed on the Feeder, and then the SMT components on the material tray are transported to the bottom of the suction nozzle through the conveyor belt. During the whole process, due to the SMT element The shape and size of the device are difficult to distinguish with the naked eye, so the wrong material is often used, and the SMT placement machine is running at high speed. Once the wrong material is used, there will be a large number of unqualified products, which will cause damage to the enterprise. Huge loss. The current anti-wrong material measures are basically that the warehousing personnel paste the QR code according to the regulations when the material tray is put into the warehouse. Wrong, such as "CN202022239597.9 A kind of error-proofing device for SMT processing materials" and "CN202010871955.X A kind of error-proofing control method for SMT placement machine loading instructions", but this method will cause great pressure on the warehouse personnel , in case the warehousing personnel post the wrong QR code, even if the loading personnel scan the QR code, the products produced will be unqualified. At the same time, after working for a long time, the suction nozzle will be worn and blocked, which will cause Can’t absorb SMT components or have insufficient suction force for SMT components, so that SMT components fall from the suction nozzle slightly under external force. In addition, today’s SMT components are getting smaller and smaller. During the working process, when When external vibration occurs, on the one hand, the SMT components cannot be placed on the circuit board accurately, or the SMT components are tilted due to the misalignment between the pins and the through holes on the circuit board after the SMT components are placed on the circuit board, and finally The quality of the circuit board cannot be guaranteed. On the other hand, if the vibration amplitude is too large, the material tray will also vibrate. Since the material belt on the material tray is always in a tight state during the working process, the vibration of the material tray can easily cause the material The breakage of the belt, which in turn affects the entire workflow

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