Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Device and method for adjusting longitudinal thickness uniformity of extruded composite film

A technology of extrusion compounding and uniform thickness, which is applied in the field of longitudinal thickness uniformity adjusting devices for extruded compound films, and can solve the problem of adjusting the same proportional relationship of the motor speed under the open-loop control of the inverter, adjusting the relationship of the motor speed under the open-loop control of the inverter, The problem of large longitudinal thickness deviation of the film, etc., can achieve the effect of accurate and fast test results, improved production efficiency, and good compatibility.

Active Publication Date: 2017-04-12
HUILONG PLASTICS MACHINERY
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual production, this method has the following defects: 1. When running at a certain line speed, the speed of the open-loop control motor of the frequency converter cannot be adjusted completely according to the same proportional relationship, resulting in a large deviation in the longitudinal thickness of the film; 2. The composite line speed When speeding up and down, the time is short and the change is large, and the speed of the open-loop control motor of the frequency converter cannot be adjusted according to the same proportional relationship, resulting in a large deviation in the longitudinal thickness of the film

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
  • Device and method for adjusting longitudinal thickness uniformity of extruded composite film
  • Device and method for adjusting longitudinal thickness uniformity of extruded composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment is a device for adjusting the longitudinal thickness uniformity of an extruded composite film, such as figure 1 As shown, including the thickness gauge (the overall structure is not shown in the figure), the probe mounting frame 2, the extruder 3, the PLC controller (not shown in the figure) and the film conveying mechanism, the probe 1 of the thickness gauge passes through the probe It is installed and erected on the surface of the extruded composite film 4, the thickness gauge and the extruder are respectively electrically connected with the PLC controller, the extruded composite film is conveyed through the film conveying mechanism, and the die of the extruder is set above the film conveying mechanism.

[0030] The thickness gauge can be a non-contact thickness gauge available on the market, and the probe in the thickness gauge moves back and forth along the transverse section of the extruded composite film.

[0031] The probe mounting frame is an O-frame, ...

Embodiment 2

[0037] In this embodiment, a method for adjusting the longitudinal thickness uniformity of an extruded composite film is realized by the device described in Example 1. The thickness of each point of each transverse section in different lengths of the extruded composite film is measured by a thickness gauge in real time, and then controlled by PLC The device compares and analyzes the measured thickness values ​​with the preset thickness values, and then converts the analysis results into the screw speed control of the extruder, and then controls the extrusion volume at the extruder die, and finally realizes extrusion Real-time adjustment of the longitudinal thickness of the composite film.

[0038] Among them, the PLC controller compares and analyzes the measured thickness values ​​with the preset thickness values ​​as follows: figure 2 As shown, it specifically includes the following steps:

[0039] (1) Pre-set the thickness rating, deviation range value and thickness compensatio...

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 discloses a device and a method for regulating the longitudinal thickness evenness of an extrusion compound film. The device comprises a thickness measurement instrument, a probe installation frame, an extruder, a PLC and a film conveying mechanism, wherein a probe of the thickness measurement instrument is installed and erected on the surface of the extrusion compound film via the probe installation frame; the thickness measurement instrument and the extruder are respectively connected with the PLC electrically; the extrusion compound film is conveyed by the film conveying mechanism; a die head of the extruder is arranged above the film conveying mechanism. The method comprises the following steps: the thickness of each point of the longitudinal cross section of the extrusion compound film is measured in real time by using the thickness measurement instrument; then the PLC compares and analyzes each thickness value obtained by measurement with the preset thickness value; then the analyzed result is converted into the screw rod rotation speed control of the extruder, and further the extrusion amount at the die head of the extruder is controlled; finally the longitudinal thickness of the extrusion compound film is regulated in real time. The longitudinal thickness of the extrusion compound film is regulated in real time, so that the evenness of the longitudinal thickness of the extrusion compound film is enhanced effectively.

Description

Technical field [0001] The invention relates to the technical field of manufacturing flexible packaging materials, in particular to a device and method for adjusting the longitudinal thickness uniformity of an extruded composite film. Background technique [0002] For extruded composite packaging materials, the thickness uniformity and flatness control of the extruded composite film is one of the key indicators that affect the performance and cost of the packaging material. However, in high-speed production, the average error of the thickness uniformity of the extruded film is manually controlled. More than 10%, which is far from meeting the requirements of composite packaging materials. In the processing technology of extruded composite film, the extrusion volume of the extruder die not only affects the thickness of the extruded composite film, but the stability of its extrusion volume control also often affects the longitudinal thickness uniformity of the extruded composite fil...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B29C47/92B29C47/34B29C48/92B29C48/355
CPCB29C48/355B29C48/92B29C2948/92152
Inventor 黄伟伦
Owner HUILONG PLASTICS MACHINERY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com