Method for automatically detecting plugging of injector steel needles based on air pressure

An automatic detection and syringe technology, which is applied in the direction of measuring the acceleration and deceleration rate of fluid, using liquid/vacuum for liquid tightness measurement, sorting, etc. It can reduce the labor intensity of inspection, prolong the production time, and improve the utilization rate.

Inactive Publication Date: 2012-01-04
WUXI ZHONGWANG 4D TECH
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art that the detection of needle blockage of syringe steel needles and steel needles relies on manual detection, workers are prone to visual fatigue, labor intensity is high, the product qualification rate and detection quality cannot be guaranteed, and the monitoring speed is low. The present

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for automatically detecting plugging of injector steel needles based on air pressure
  • Method for automatically detecting plugging of injector steel needles based on air pressure

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1. Testing of all-pass steel needle products:

[0026] The tooling strip containing multiple needle seats is placed on the steel needle machine. After the steel needle machine detects the tooling, it automatically sends the steel needle to each needle seat on the tooling strip. A tooling strip with multiple steel needles fixed is connected from the bottom of the needle seat to a COIDO 6218 pressure pump, which has a built-in precision pressure gauge. An air pressure valve is provided on the pump air path connecting the pressure pump and the steel needle seat, and the air pressure valve is in a closed state at this time. Set the pump air pressure of the pressure pump to 10Pa, and the detection accuracy of the air pressure to 0.1Pa.

[0027] The computer obtains the trigger and control signal for the synchronization of the pressure pump and the production process, and the external trigger and control signal starts the pressure pump to pump air from the bottom of the n...

Example Embodiment

[0029] Example 2: Detection of full plugged steel needle products:

[0030] The tooling strip containing multiple needle seats is placed on the steel needle machine. After the steel needle machine detects the tooling, it automatically sends the steel needle to each needle seat on the tooling strip. A tooling strip with multiple steel needles fixed is connected from the bottom of the needle seat to a COIDO 6218 pressure pump, which has a built-in precision pressure gauge. An air pressure valve is provided on the pump air path connecting the pressure pump and the steel needle seat, and the air pressure valve is in a closed state at this time. Set the pump air pressure of the pressure pump to 10Pa, and the detection accuracy of the air pressure to 0.1Pa.

[0031] The computer obtains the trigger and control signal for the synchronization of the pressure pump and the production process, and the external trigger and control signal starts the pressure pump to pump air from the bottom of...

Example Embodiment

[0033] Example 3: Detection of semi-blocked steel needle products:

[0034] The tooling strip containing multiple needle seats is placed on the steel needle machine. After the steel needle machine detects the tooling, it automatically sends the steel needle to each needle seat on the tooling strip. A tooling strip with multiple steel needles fixed is connected from the bottom of the needle seat to a COIDO 6218 pressure pump, which has a built-in precision pressure gauge. An air pressure valve is provided on the pump air path connecting the pressure pump and the steel needle seat, and the air pressure valve is in a closed state at this time. Set the pump air pressure of the pressure pump to 10Pa, and the detection accuracy of the air pressure to 0.1Pa.

[0035] The computer obtains the trigger and control signal for the synchronization of the pressure pump and the production process, and the external trigger and control signal starts the pressure pump to pump air from the bottom of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for automatically detecting the plugging of injector steel needles based on air pressure. The method comprises the following steps of: connecting a tool strip from the bottom of a needle seat to a pressure pump, and arranging an air pressure valve on a pump air path of the pressure pump; acquiring trigger and control signals, which are synchronous with a productionprocess, of the pressure pump by using a computer, starting the pressure pump by using external trigger and control signals to pump air from the bottom of the needle seat to the steel needles, opening the air pressure valve simultaneously, and transmitting air pressure values of all the steel needles which are detected by a pressure gauge when the air is started to be pumped and after the air is pumped for 0.5 seconds to the computer for detection; and judging whether a steel product is a qualified product or a waste product through the computed change rate of the air pressure generated when the air is pumped within 0.5 seconds, and eliminating the waste product from a specified material outlet through the external trigger and control signals. By the method, the plugging of the steel needles can be detected at high accuracy and high speed, and the yield of the product can be effectively ensured.

Description

technical field [0001] The invention relates to the technical field of syringe steel needle detection, in particular to a method for automatically detecting whether the syringe steel needle is blocked by using the air pressure principle at the production site of the syringe steel needle. Background technique [0002] In the production workshop of syringe steel needles in assembly line operation, it is necessary to conduct online detection of whether the steel needles are clogged (needle blockage). In the prior art, the on-line detection of steel needle clogging relies on manual detection. First, the steel needle is fixed on the needle row, then immersed in silicone oil, and whether the steel needle is bubbling is observed by human eyes, so as to determine whether the steel needle is If there is blockage, the product is divided into qualified products (such as bubbles coming out of the needle) and unqualified products (such as no bubbles coming out of the needle) according to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B07C5/34G01M3/28
Inventor 董仲伟
Owner WUXI ZHONGWANG 4D TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap