CN-121995970-A - Method for managing and controlling pasting boundary quality of film connecting buckle for cotton harvesting and coating

CN121995970ACN 121995970 ACN121995970 ACN 121995970ACN-121995970-A

Abstract

The invention relates to a method for controlling the quality of a pasting boundary of a film connecting buckle for cotton harvesting and film coating, which adopts an industrial camera visual characteristic detection method to capture and calculate the offset of a tooth line relative to a reference tooth line in the advancing direction of a packaging film, controls an infrared ray level instrument to carry out follow-up offset motion according to the offset, avoids the deviation caused by unstable stop position of the tooth line on the film coating due to unstable operation of equipment, utilizes the infrared ray level instrument to project a red mark line on the film coating, takes the red mark line as a datum line for pasting the film connecting buckle, and ensures the accuracy and consistency of the pasting position of the film connecting buckle by only referring to the red mark line.

Inventors

ZHANG JIN
ZHANG CHANGMING
LIU JUNYU
FENG CHENYANG
LEI CHAO

Assignees

浙江绿立新材料有限公司

Dates

Publication Date: 20260508
Application Date: 20260122

Claims (9)

1. The method for controlling the quality of the pasting boundary of the film connecting buckle for cotton harvesting and coating is characterized by comprising the following steps: step 1), forming tooth-shaped lines on a coating film; Step 2), conveying the whole roll of coating film to the winding direction until the tooth-shaped line of one coating film reaches the visual detection window area of the industrial camera, and stopping conveying; Shooting a position picture of the tooth line reaching the visual detection window area in the step 2) on the plane of the packaging film by an industrial camera, feeding back the position picture of the tooth line to an upper computer system, and storing the position information of the obtained tooth line by the upper computer system, wherein the position of the tooth line is taken as the position of a reference tooth line; And 4) continuously conveying the whole roll of the coating film to the winding direction, and stopping moving when the tooth-shaped line of the other coating film enters the visual detection window area. Shooting a position picture of the tooth line on the plane of the packaging film by an industrial camera, feeding back the picture to an upper computer system, and obtaining the offset delta L of the tooth line relative to a reference tooth line in the moving direction of the packaging film by the upper computer system based on a visual characteristic detection method, wherein the offset calculating origin is the position of the reference tooth line, and the positive direction is the moving direction of the packaging film; Step 5), the upper computer system sends the offset to the lower computer, the lower computer controls the infrared ray level instrument to carry out follow-up offset motion along the direction perpendicular to the moving direction of the packaging film, the follow-up offset distance of the infrared ray level instrument is L+DeltaL, L is the distance of the initial position of the infrared ray level instrument in the negative direction of the reference tooth line, and the infrared ray level instrument irradiates a red mark line on the packaging film; Step 6), tearing off the double-sided adhesive stripping film on the film connecting buckle by an operator, and then pasting the film connecting buckle on the coating film, wherein the outer edge line of the double-sided adhesive of the short side film on the film connecting buckle is overlapped with the red mark line during pasting; And 7) after the step 6) is completed, the industrial camera shoots a picture of the position of the film connecting buckle, the shot picture is fed back to the upper computer system, the upper computer system obtains a distance value between the outer edge line of the short-side film double-sided adhesive on the film connecting buckle and the tooth-shaped line through visual on-line measurement, whether the distance value is in a preset qualified deviation interval or not is judged, if yes, the film connecting buckle is judged to be stuck qualified, and otherwise, the film connecting buckle is judged to be unqualified.
2. The method for controlling the quality of the sticking boundary of the film connecting buckle for cotton harvesting and coating films according to claim 1, wherein in the step 2), the coating film is stopped after moving 750mm towards the rolling direction.
3. The method for controlling the quality of a sticking boundary of a cotton harvesting and film-coating film connecting buckle according to claim 1, wherein deep yellow kraft release paper is paved below a packaging film where a visual detection window area is located.
4. The method for controlling the quality of a sticking boundary of a cotton harvesting and coating film connecting buckle according to claim 1, wherein the length of the red mark line is 300mm and the width is 1mm.
5. The method for controlling the quality of a pasting boundary of a film connecting buckle for cotton harvesting and film coating according to claim 1, wherein the plane of a packaging film is obliquely irradiated by a supplementary light source in a visual detection window area, and the supplementary light source assists an industrial camera to take pictures.
6. The method for controlling the quality of a sticking boundary of a film connecting buckle for cotton harvesting and film coating according to claim 1, wherein the qualified deviation is set to be +/-2 mm.
7. The method for controlling the quality of the sticking boundary of the film connecting buckle for cotton harvesting and coating films according to claim 1, wherein in the step 4), the coating film is stopped after moving 750mm towards the rolling direction.
8. The method for controlling the quality of a pasting boundary of a film connecting buckle of a cotton harvesting and film coating is characterized in that the tooth-shaped line is a broken line-shaped spliced line formed by punching, spaced punched holes are formed after punching, the punched holes are 0.5mm in width and 8mm in length, the film coating is stretched by a winding roller to form an ellipse in the conveying process, the punched holes are stretched to 1mm in width, when more than five continuous ellipse punched holes exist in a visual detection window area, a regular central point connecting line is formed, and the central point connecting line and a reference tooth-shaped line form an axial line position deviation in the advancing direction of the packaging film on the plane of the packaging film, and the axial line position deviation is an offset.
9. The method for controlling the quality of a sticking boundary of a film connecting buckle for cotton harvesting and film coating according to claim 1, wherein the moving speed of the packaging film is 3 m/s in the moving process.

Description

Method for managing and controlling pasting boundary quality of film connecting buckle for cotton harvesting and coating Technical Field The invention relates to the pasting operation of a film connecting buckle on a cotton harvesting and coating film, in particular to a pasting boundary quality control method of the film connecting buckle of the cotton harvesting and coating film. Background The cotton harvesting process of large tracts of land planting can be accomplished with large-scale harvesting and packing integration harvester generally, and the harvester needs to use dedicated packing membrane when packing the cotton, and cotton harvesting efficiency is high under this kind of operation mode, the cotton after packing is convenient for transport, and comprehensive economic benefits obtains very big promotion. A film connecting buckle is required to be stuck in the production process of the special coating film of the cotton harvester, and is used for packaging and sealing the coating film in the packaging process. The film connecting buckle is provided with the double-sided adhesive tape, the stripping film of the double-sided adhesive tape is torn off, then the film connecting buckle is stuck on the coating film, when the film connecting buckle is stuck, the spacing of tooth-shaped lines on the film sticking position of the film connecting buckle can bring great influence to the sealing effect, and when the quality is unqualified, the foreign matters such as a fried bag or sand wind in the cotton packaging film transportation process can be caused to enter the cotton, so that the post-processing of the cotton is greatly influenced. With the continuous expansion of cotton planting scale in China, the mechanical automation rate of cotton harvesting links and the requirements on cotton quality are higher and higher, and the requirements on high-quality special packaging films are also higher and higher. At present, in the production process of coating films, a film connecting buckle is required to be stuck at a tooth line of a packaging film, and the sticking position of the film connecting buckle is estimated by visual inspection mainly through manual sticking of two operators in the prior art due to cost, so that the accuracy of the final sticking position of the film connecting buckle and the consistency of mass production products are difficult to ensure. Along with the increasing requirements on the quality of packaging films in the cotton harvesting process and the information management of the whole process, how to improve the position accuracy of the manual pasting process of the film connecting buckle becomes an engineering technical problem to be solved urgently. Disclosure of Invention The invention discloses a method for controlling the quality of a pasting boundary of a film connecting buckle for cotton harvesting and film coating, which can greatly improve the pasting precision of the film connecting buckle and the comprehensive quality of packaging film production. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a method for controlling the quality of the pasting boundary of a film connecting buckle for cotton harvesting and coating comprises the following steps: step 1), forming tooth-shaped lines on a coating film; Step 2), conveying the whole roll of coating film to the winding direction until the tooth-shaped line of one coating film reaches the visual detection window area of the industrial camera, and stopping conveying; Shooting a position picture of the tooth line reaching the visual detection window area in the step 2) on the plane of the packaging film by an industrial camera, feeding back the position picture of the tooth line to an upper computer system, and storing the position information of the obtained tooth line by the upper computer system, wherein the position of the tooth line is taken as the position of a reference tooth line; And 4) continuously conveying the whole roll of the coating film to the winding direction, and stopping moving when the tooth-shaped line of the other coating film enters the visual detection window area. Shooting a position picture of the tooth line on the plane of the packaging film by an industrial camera, feeding back the picture to an upper computer system, and obtaining the offset delta L of the tooth line relative to a reference tooth line in the moving direction of the packaging film by the upper computer system based on a visual characteristic detection method, wherein the offset calculating origin is the position of the reference tooth line, and the positive direction is the moving direction of the packaging film; Step 5), the upper computer system sends the offset to the lower computer, the lower computer controls the infrared ray level instrument to carry out follow-up offset motion along the direction perpendicular to the moving direction of the packaging film, the follow-up offs