Unlock instant, AI-driven research and patent intelligence for your innovation.
Cutting tail fixed-length control method based on high-speed gravure printing machine
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A control method and cutting technology, which is applied to the general parts of printing machinery, printing machines, rotary printing machines, etc., can solve the problem of excessive length of material tail, and achieve the effect of reducing waste loss and length of material tail
Active Publication Date: 2015-01-28
SHAANXI BEIREN PRINTING MACHINERY
View PDF7 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0007] The object of the present invention is to provide a method for controlling the length of the cutting material tail of the gravure printing machine, which solves the problem that the material tail is too long in the cutting process of the existing cutting method when the main machine is running at a high speed
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
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0069] When the speed V of the main machine is 300m / min, that is, 5mm / ms, and the circumference C of the pre-drive shaft is 950mm, the time T for one rotation of the material shaft is obtained as 190ms, and the length ΔL of the cutting material tail is set to 500mm. The falling time T1 of the pressure roller is 160ms, and the falling time T2 of the cutter is 70ms, that is, T≥T1, ΔT1=T-T1=30ms, ΔT2=T-T2=120ms, ΔT4=ΔT2+ΔT3=220ms.
[0070] Therefore, the time for the material shaft to rotate one circle is longer than the falling time of the cutting pressure roller, and the material shaft can complete the feeding action by rotating one circle. When the reflective photoelectric eye detects the curved surface, it starts timing. When the timer reaches 30ms, the cutting roller comes out to ensure that the roller overwhelms the tape. When the timer reaches 220ms, the cutting knife comes out to complete a feeding action, while ensuring The length of the trimmed tail is the set value.
Embodiment 2
[0072] When the speed V of the main machine is 600m / min, that is, 10mm / ms, the circumference C of the pre-drive shaft is 950mm, and the time T for one rotation of the material shaft is 95ms, the length ΔL of the cutting material tail is set to 500mm, and the cutting The falling time T1 of the pressure roller is 160ms, the falling time T2 of the cutter is 70ms, that is, T
[0073] The time for the material shaft to rotate one circle is less than the descending time of the cutting roller, and the material shaft needs to rotate two circles to complete the feeding action. When the reflective photoelectric eye detects the curved surface, it starts timing. When the timer reaches 95ms, the cutting roller comes out to ensure that the roller overwhelms the tape. When the timer reaches 119ms, the cutting knife comes out, completing a feeding action and ensuring cutting Cutting tail length is set value.
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 discloses a cutting tail fixed-length control method based on a high-speed gravure printing machine. The method comprises the following steps of: measuring the circumference C of a pre-driving shaft and a current host speed V, and calculating duration T during which a discharging shaft rotates by a circle; setting the falling duration of a cutting press roll as T1 and setting the falling duration of a cut-off knife as T2; and considering two situations when T is more than or equal to T1 and T is smaller than T1, acquiring a time interval ranging from the irradiation of a reflected light electric eye onto a cambered surface to press roller discharging and a time interval ranging from the irradiation of a reflected light electric eye onto a cambered surface to cutting knife discharging to control the length delta L of a tail to reach a set valve. Due to the adoption of the method, the problem of over large lengths of tails in a cutting process with the conventional cutting method is solved during high-speed running of a host.
Description
technical field [0001] The invention belongs to the technical field of printing equipment, and relates to a method for controlling the length of a cutting tail of a gravure printing machine. Background technique [0002] Due to the increase in raw material costs, fierce competition and the continuous improvement of consumers' requirements for printing products, this requires equipment manufacturers to reduce the waste loss of equipment. The waste loss is mainly caused by the machine speed up and down and the cutting process. When the machine runs at a constant speed, it is particularly important to reduce waste loss in the cutting process, and reducing the tail length of the cutting process is the premise and key to reducing waste loss. [0003] At present, the automatic cutting methods of gravure printing machines are divided into those with and without arc detection. [0004] The working principle of the curved surface detection is to press the material receiving button t...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More