Frequency converter for film blowing machine and weight-per-meter control method thereof
A technology of frequency converter and film blowing machine, applied in the field of frequency converter, can solve the problems of increasing equipment cost and waste of frequency converter resources.
Active Publication Date: 2018-02-09
SHENZHEN HPMONT TECH
View PDF10 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] 1. The frequency converter has an independent control unit and abundant analog terminals and digital terminals. If they are not utilized, the resources of the frequency converter will be wasted
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0033] figure 1 It is a block diagram of a frequency converter used in a film blowing machine according to an embodiment. The frequency converter 100 is used to sample the weight of the material and calculate the weight of the output film, and realize the precise and stable control of the film thickness; it includes a differential sampling circuit 110 and a micro-control unit 120; the frequency converter is also provided with a weighing differential signal...
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
Login to View More Abstract
The invention relates to a frequency converter for a film blowing machine and a weight-per-meter control method thereof. The frequency converter is used for sampling the weight of a material, calculating the weight of an output film and realizing precise and stable control for the thickness of the film; the frequency converter comprises a micro control unit and a sampling circuit and is provided with a weighing differential signal input terminal and a speed pulse input terminal; the differential sampling circuit samples material weight signals; the micro control unit is used for calculating the weight of the output film and controlling and maintaining the balance between the input quantity of the film blowing machine system and the weight of the output film. According to the frequency converter for the film blowing machine and the weight-per-meter control method thereof, resources of the frequency converter are sufficiently utilized, control operation advantages of the frequency converter are given into play, a sampling circuit of an analog input terminal is improved, PID control of the frequency converter and film control of the film blowing machine are combined, and a film blowing machine weight-per-meter control integrated frequency converter is realized according to the balance between the input quantity of the film blowing machine system and the weight of the output film.
Description
technical field [0001] The invention relates to the technical field of frequency converters, in particular to a frequency converter used for a film blowing machine and a method for controlling its meter weight. Background technique [0002] Film blowing machine is a common equipment in the plastic products industry, mainly used to produce plastic film, packaging film, etc. Its composition structure includes extruder, machine head, die head, cooling device, frequency converter, traction, winding and other devices, Among them, the frequency converter is used as the driving device of the power part of the film blowing machine, which controls the main screw to rotate and push the material, drives the fan to blow the heated plastic material on the wind plate, adjusts the speed of the traction roller to control the thickness of the film, and drives the winding motor to output The film is wound up. Whether the thickness of the film is uniform directly affects the quality of the fi...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G05B11/42B29C55/28
CPCB29C55/28G05B11/42Y02P70/10
Inventor 尹康张宁涂汉泉
Owner SHENZHEN HPMONT TECH