System and method for detecting metal stamping part tapping defects

Patent metadata

Field	Value
Publication number	US-11117170-B2
Application number	US-201816348514-A
Country	US
Kind code	B2
Filing date	Jun 12, 2018
Priority date	Mar 30, 2018
Publication date	Sep 14, 2021
Grant date	Sep 14, 2021

Abstract

A system for detecting metal stamping part tapping defects, which comprises a product placing device, a detecting mechanism, a defective product sorting mechanism, a good product discharging mechanism, an analyzing mechanism and a Programmable Logic Control (PLC) system; the product placing device, the defective product sorting mechanism, and the good product discharging mechanism are connected to the PLC system respectively, the PLC system is configured to control the product placing device to place the metal stamping part in a detection position; the detecting mechanism is configured to acquire the tapping hole information of the metal stamping part tapping hole in the detection position.

First claim

What is claimed is:

1. A system for detecting metal stamping part tapping defects, wherein the system comprises a product placing device, a detecting mechanism, a defective product sorting mechanism, a good product discharging mechanism, an analyzing mechanism and a programmable logic control system;
the product placing device, the defective product sorting mechanism and the good product discharging mechanism are connected to the programmable logic control system, respectively, and the detecting mechanism is connected to the analyzing mechanism;
the programmable logic control system is configured to control the operation of the product placing device, and the product placing device is configured to place the metal stamping part in a detection position;
the detecting mechanism is configured to acquire a tapping hole information of the metal stamping part tapping hole in the detection position;
the analyzing mechanism is configured to analyze a state of the tapping hole according to the tapping hole information, and feed back a state result of the tapping hole to the programmable logic control system;
the programmable logic control system is further configured to control the operation of the defective product sorting mechanism or the good product discharging mechanism according to the state result of the tapping hole; and
the defective product sorting mechanism is configured to acquire defective products in metal stamping parts, and the good product discharging mechanism is configured to acquire good products in the metal stamping part;
wherein the product placing device comprises:
a loading mechanism and a product pushing mechanism;
the loading mechanism comprises a vibrating plate and a direct vibrator, and a portion of a vibrating disk in a vibration feeding direction is connected to the direct vibrator;
the vibrating plate is configured to sequentially output the metal stamping part into the direct vibrator, and the direct vibrator is configured to carry the metal stamping part to an inlet of the product pushing mechanism;
the product pushing mechanism comprises a bit optical fiber, a pushing cylinder and a feeding cylinder, wherein the pushing cylinder and the feeding cylinder are connected to the programmable logic control system, respectively; and
the bit optical fiber is configured to sense the metal stamping part at the inlet, and output a photoelectrical signal to trigger the operation of the pushing cylinder after the metal stamping part is sensed, the pushing cylinder is configured to push the metal stamping part to a feeding position, and the feeding cylinder is configured to feed the metal stamping part in the feeding position to the detection position.

2. The system of claim 1 , wherein the detecting mechanism comprises a detecting camera, a detecting light source, a detecting bracket and a detecting optical fiber;
the detecting light source is an annular light source, the detecting camera and the detecting light source are fixedly connected to the detecting bracket, respectively, the detecting light source is arranged below the detecting camera, and the analyzing mechanism is connected to the detecting camera;
the detecting optical fiber is configured to send a photographing signal to the detecting camera after the metal stamping part is sensed in the detection position, and the detecting camera is configured to acquire a tapping image of the metal stamping part tapping hole; and
the analyzing mechanism is configured to acquire the tapping image from the detecting camera, and identify the tapping image to obtain a tapping detection result of the metal stamping part.

3. The system of claim 1 , wherein the analyzing mechanism is a charge coupled device detecting mechanism, and the charge coupled device detecting mechanism is configured to identify the tapping image and output corresponding defective product signals or good product signals according to the identified tapping detection result.

4. The system of claim 1 , wherein the system further comprises a cabinet in which the loading mechanism, the product pushing mechanism, the detecting mechanism, the defective product sorting mechanism and the good product discharging mechanisms are provided.

5. The system of claim 4 , wherein the defective product sorting mechanism comprises a sensing optical fiber, a defective product processing cylinder and a mechanical finger;
the mechanical finger is connected to the defective product processing cylinder, and the sensing optical fiber is configured to sense the detected metal stamping part; and
the defective product processing cylinder is configured to drive the mechanical finger to move when receiving a defective product signal, and the mechanical finger is configured to bring the defective products in the metal stamping part to the defective product area.

6. The system of claim 5 , wherein the good product discharging mechanism comprises a good product discharging guide rail, an air blowing device and a receiving box;
the good product discharging guide rail is obliquely mounted on the cabinet, and the receiving box is arranged below the good product discharging guide rail;
the good product discharging guide rail is used as the track for discharging the good products in the metal stamping part, and the air blowing device is configured to blow the good products to the receiving box; and
the air blowing device comprises a solenoid valve and an air pipe.

Assignees

• Univ Shenzhen

Inventors

• Gao Zhijian
• Wang Ting
• Zeng Qinghao

Classifications

• B07C5/10 Primary

  measured by light-responsive means {(sorting according to colour B07C5/342)} · CPC title

• B07C5/362

  Separating or distributor mechanisms (switches for postal sorting B07C3/065; particular discharging devices for B65G47/74) · CPC title

• B07C5/34 Primary

  Sorting according to other particular properties {(material testing per se G01N; quality control G07C3/14)} · CPC title

• B07C5/342

  according to optical properties, e.g. colour {(according to radiation transmittivity B07C5/3416)} · CPC title

• B07C5/3422 Primary

  using video scanning devices, e.g. TV-cameras · CPC title