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Feeding method and system of surface mounting machine

A technology of placement machine and feeding, applied in the direction of electrical components, electrical components, etc., can solve the problems of increasing control pins, complex circuit of placement machine feeding system, high cost, reducing usage, simple and practical structure, accurate The effect of feeding operation

Inactive Publication Date: 2019-06-04
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem that the existing chip mounter feeding system has more feeders to control, resulting in more control pins, which further makes the circuits in the chip mounter feeding system complicated and costly, the present invention relates to a simplified circuit, Method and system for cost-reducing placement machine

Method used

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  • Feeding method and system of surface mounting machine
  • Feeding method and system of surface mounting machine
  • Feeding method and system of surface mounting machine

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] refer to Figure 1 ~ Figure 4 , a feeding method for a placement machine, comprising the following steps:

[0026] 1) Enable the 74HC595 chip, and move the bit data to be input into the 74HC595 data input terminal;

[0027] 2) The bit data is moved into the chip bit by bit. The bit controller sends the low bit first and then the high bit at the chip data input pin, that is, pin 11. After a rising edge is generated, the data on the serial data input pin SDI is moved into the 74HC595 In the shift register, if there is cascading, serial input can be performed;

[0028] 3) Output data in parallel, the bit controller sends the rising edge signal to the output memory latch pin of the chip, and sends the data on the serial data input pin SDI to the output latch;

[0029] 4) After the data is sent in, input a high level to the chip enable pin OE, so that th...

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Abstract

The invention discloses a feeding method of a surface mounting machine. The feeding method comprises the steps of: enabling a 74HC595 chip, and shifting bit data to be input into a 74HC595 data inputend; 2) shifting the bit data into the chip bit by bit, transmitting low bit and then high bit by means of a bit controller at a chip data input pin, shifting data on a serial data input pin SDI intoa 74HC595 shift register after a rising edge is generated, and performing serial input if a cascade connection exists; 3) parallelly outputting data, latching a pin rising end signal to an output memory of the chip by means of the bit controller, and transmitting the data on the serial data input pin SDI into an output latch; 4) inputting high level to a chip enabling pin OE after transmitting thedata, so that the output pin is in a high-impedance state, and prohibiting the output of data. The invention further provides a feeding system of the surface mounting machine. The feeding method andthe feeding system effectively simplify a material bin control circuit of the surface mounting machine, and save the control pin of the microcontroller of the surface mounting machine.

Description

technical field [0001] The present invention relates to a method and system for feeding a chip mounter, in particular to a method capable of using fewer IO ports of a single-chip microcomputer to control a material bin, which realizes efficient control of the chip mounter material station, thereby reducing the cost of the chip mounter . Background technique [0002] With the rapid development of science and technology, various types of electronic products emerge in endlessly, people's demand for circuit boards is also increasing, and the requirements for compact circuit board components are also getting higher and higher. These factors also motivate manufacturers to continuously improve the process, and the new circuit boards produced are becoming more and more sophisticated and portable. Therefore, the demand for circuit board mounting technology continues to expand. Previously, people used perforated plug-ins to solve the problem of circuit board density. However, due to...

Claims

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Application Information

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IPC IPC(8): H05K13/04H05K13/08
Inventor 董辉姜涛周瑾毛小海周祥清
Owner ZHEJIANG UNIV OF TECH
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