CN116175946A - Method for solving lotus leaf edge of transparent and semi-transparent fluorine film - Google Patents
Method for solving lotus leaf edge of transparent and semi-transparent fluorine film Download PDFInfo
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- CN116175946A CN116175946A CN202211577122.8A CN202211577122A CN116175946A CN 116175946 A CN116175946 A CN 116175946A CN 202211577122 A CN202211577122 A CN 202211577122A CN 116175946 A CN116175946 A CN 116175946A
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- Prior art keywords
- transparent
- measuring device
- semi
- thickness
- thickness measuring
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 30
- 239000011737 fluorine Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 19
- 240000002853 Nelumbo nucifera Species 0.000 title claims abstract description 16
- 235000006508 Nelumbo nucifera Nutrition 0.000 title claims abstract description 16
- 235000006510 Nelumbo pentapetala Nutrition 0.000 title claims abstract description 16
- 238000009826 distribution Methods 0.000 claims abstract description 27
- 239000012528 membrane Substances 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000010586 diagram Methods 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 9
- 238000007711 solidification Methods 0.000 description 5
- 230000008023 solidification Effects 0.000 description 5
- 239000002033 PVDF binder Substances 0.000 description 4
- 238000010096 film blowing Methods 0.000 description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000003631 expected effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C2037/90—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention relates to the technical field of fluorine films, in particular to a method for solving the problem of lotus leaf edges of transparent and semi-transparent fluorine films. The method for solving the problem of the lotus leaf edge of the transparent and semi-transparent fluorine film comprises the steps of arranging a wide-angle high-precision high-speed camera at the inner side of a bubble stabilizing frame of fluorine film production equipment, and drawing to obtain a horizontal plane frost line height distribution map image of 360 degrees; an arc track is arranged on the inner side of a membrane bubble of production equipment and is provided with an X-ray thickness measuring device I, an X-ray thickness measuring device II matched with the X-ray thickness measuring device I is arranged, and the thickness image of the membrane bubble peripheral ring is obtained through measurement of the X-ray thickness measuring device I and the X-ray thickness measuring device II. The automatic air ring system is matched through monitoring the height of the frost line, so that the automatic adjustment of the height is realized; by monitoring the thickness of the circumference and matching the automatic thickness adjustment system, the large breakthrough of lagging past thickness adjustment and no waste of materials is realized.
Description
Technical Field
The invention relates to a film blowing forming method, in particular to a method for solving the problem of lotus leaf edges of transparent and semi-transparent fluorine films.
Background
In the existing production of blow-molded transparent fluorine films, the solutions to the problems of thickness and lotus edges are always dependent on the feedback matching automatic die head of an online thickness measuring system.
Patent number CN202010205830.3 entitled "blown film forming apparatus", discloses a blown film forming apparatus capable of determining circumferential distribution of the height of a solidification line. The film blowing molding device is provided with a die for extruding transparent or semitransparent resin in a tubular shape, and a determination part (52) for determining the circumferential distribution of the height of the solidification line according to 2 images of the solidification line of the extruded tubular resin or 2 images of the solidification line of the extruded tubular resin from a position above the height of the solidification line. This application discloses how to determine the frost line height distribution in the circumferential direction of the membrane, but the problem of the lotus leaf edge of the transparent and semi-permeable fluorine membrane cannot be completely solved by adjusting the frost line height distribution in the circumferential direction of the membrane.
In the prior art, the real-time feedback function of the thickness gauge is often connected with an automatic die head, but because the speed of the film blowing machine is too fast, the automatic die head is in a state of 360 degrees and the horizontal double-layer thickness measurement of the online thickness measuring system is performed, namely 180 degrees of detection feedback, a certain time difference is often generated in correction and adjustment, so that the fluorine film has uneven thickness, and further the problem of lotus leaf edges of the fluorine film is caused.
Meanwhile, in the prior art, for the frost line problem of film making by a film blowing method, a visual method is always adopted for control, abnormal deviation is unavoidable, the method is backward, the experience is raised, and the requirement on the experience of an operator is high.
Disclosure of Invention
The invention aims to solve the defects and provides a method for solving the lotus leaf edge of a transparent and semi-permeable fluorine film.
In order to overcome the defects in the background art, the technical scheme adopted by the invention for solving the technical problems is as follows: this method for solving the lotus leaf edge of transparent and semi-permeable fluorine film comprises:
s1, arranging a wide-angle high-precision high-speed camera for shooting an actual frost line of a cylindrical transparent or semi-permeable fluorine film on the inner side of a foam stabilizing frame of transparent or semi-permeable fluorine film production equipment, and drawing to obtain a horizontal plane frost line height distribution map image of 360 degrees;
s2, arranging an arc track on the inner side of a membrane bubble of transparent or semi-transparent fluorine membrane production equipment, arranging an X-ray thickness measuring device I on the arc track, arranging an arc track on the outer ring of the membrane bubble, arranging an X-ray thickness measuring device II matched with the X-ray thickness measuring device I on the arc track, and measuring by the X-ray thickness measuring device I and the X-ray thickness measuring device II to obtain a thickness image of the peripheral ring of the membrane bubble;
s3, introducing the 360-degree frost line height distribution diagram obtained in the step S1 into an automatic die head system, matching with an automatic air ring system of the automatic die head, adjusting on the points, and adjusting the frost line at certain points to be higher or lower, or adjusting the frost line at a large area to be higher or lower, or even the deflection of the whole film bubble;
s4, the thickness distribution diagram of the circumference obtained in the step S2 is led into an automatic die head system to guide a thickness adjusting system of the automatic die head, namely, heating points of the circumference are controlled to meet the adjustment of uneven thickness points.
According to another embodiment of the present invention, the number of the wide-angle high-precision high-speed cameras in the step S1 is 3, and the 3 wide-angle high-precision high-speed cameras are distributed at an angle of 120 ° on the circumference.
The beneficial effects of the invention are as follows: the method for solving the lotus leaf edge of the transparent and semi-permeable fluorine membrane can thoroughly solve the problem of the lotus leaf edge, and the height is automatically adjusted by monitoring the height of the frost line and matching with an automatic air ring system; through the automatic thickness adjustment system of control and matching to the circumference thickness, realized lagging to former thickness adjustment, the big breakthrough of extravagant material is not, and because be double-deck thickness measurement, 180 thickness measurement and 360 thickness measurement are high to staff's conversion requirement's problem, only can solve the lotus leaf limit problem through frost line height and combination thickness adjustment.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. Embodiments of the invention are described herein in terms of various specific embodiments, including those that are apparent to those of ordinary skill in the art and all that come within the scope of the invention.
This method for solving the lotus leaf edge of transparent and semi-permeable fluorine film comprises:
s1, arranging a wide-angle high-precision high-speed camera for shooting an actual frost line of a cylindrical transparent or semi-permeable fluorine film on the inner side of a foam stabilizing frame of transparent or semi-permeable fluorine film production equipment, and drawing to obtain a horizontal plane frost line height distribution map image of 360 degrees;
s2, arranging an arc track on the inner side of a membrane bubble of transparent or semi-transparent fluorine membrane production equipment, arranging an X-ray thickness measuring device I on the arc track, arranging an arc track on the outer ring of the membrane bubble, arranging an X-ray thickness measuring device II matched with the X-ray thickness measuring device I on the arc track, and measuring by the X-ray thickness measuring device I and the X-ray thickness measuring device II to obtain a thickness image of the peripheral ring of the membrane bubble;
s3, introducing the 360-degree frost line height distribution diagram obtained in the step S1 into an automatic die head system, matching with an automatic air ring system of the automatic die head, adjusting on the points, and adjusting the frost line at certain points to be higher or lower, or adjusting the frost line at a large area to be higher or lower, or even the deflection of the whole film bubble;
s4, the thickness distribution diagram of the circumference obtained in the step S2 is led into an automatic die head system to guide a thickness adjusting system of the automatic die head, namely, heating points of the circumference are controlled to meet the adjustment of uneven thickness points.
In the step S1, the number of the wide-angle high-precision high-speed cameras is 3, and the 3 wide-angle high-precision high-speed cameras are distributed in 120 ° angles on the circumference.
Examples:
first, a Jin Ming double-layer extruder is selected for the production equipment of the transparent or semi-transparent fluorine film, and the following process conditions are set for producing the transparent PVDF film.
The process temperature is set as follows:
cooling wind: on the premise that the film bubble is kept stable, the frost line is regulated down, the external cold air is more than or equal to 20Hz, the internal cold air is more than or equal to 13Hz, and the internal cold air and the external cold air (the same size) are synchronously regulated when the air quantity is required to be regulated due to unstable film bubble.
Traction value setting:
after the process values are set, in the production process:
the method comprises the steps of S1, arranging a wide-angle high-precision high-speed camera for shooting the actual frost line of a cylindrical transparent or semi-permeable fluorine film on the inner side of a foam stabilizing frame of transparent or semi-permeable fluorine film production equipment, drawing to obtain a horizontal plane frost line height distribution map image of 360 degrees, obtaining an annular frost line distribution map, inputting the annular frost line height distribution map into an image processing part to obtain a 360-degree frost line height distribution map, transmitting the 360-degree frost line height distribution map to an automatic air ring processing part, enabling external/internal cold air to act, and adjusting the air quantity according to the frost line height. The specific flow is as follows: the transparent formula PVDF particles are adopted to prepare a blown film, the blown film is measured by a frost line monitoring lens, a frost line distribution map is input into an image processing part, the frost line at 182 degrees is found to be higher, the analysis and the processing are carried out, the result is transmitted to an automatic air ring processing part, the 60 th operation point and the 61 th operation point (one adjustment point every 3 degrees) are automatically adjusted by an automatic air ring, the internal and external air inlet quantity of 1HZ is reduced, after 2 minutes, the frost line at 182 degrees is found to be lower by measurement, and the frost line and other frost lines are on the same plane, so that the expected effect is achieved.
An arc track is arranged on the inner side of a membrane bubble of transparent or semi-transparent fluorine film production equipment, an X-ray thickness measuring device I is arranged on the arc track, an arc track is arranged on the outer ring of the membrane bubble, an X-ray thickness measuring device II matched with the X-ray thickness measuring device I is arranged on the arc track, an annular thickness distribution diagram is obtained, the annular thickness distribution diagram is input into an image processing part, a 360-degree thickness distribution diagram is obtained, the thickness distribution diagram is input into an automatic die head processing part, and the thickness of some points which do not meet the product requirement is adjusted according to the thickness distribution. The specific flow is as follows: preparing a blown film with the thickness of 20 micrometers by adopting PVDF particles as a transparent formula, measuring an annular thickness distribution map by an X-ray thickness measuring system, transmitting the distribution map to an image processing part, finding that the thickness at 74 degrees is thicker and reaches 24 micrometers, analyzing and processing the thickness, failing to meet the quality requirement, transmitting the result to an automatic die head, automatically adjusting the 24 th operating point and the 25 th operating point (each 3 degrees of adjusting point), improving the temperature of a die mouth by 5 degrees, and measuring the thickness of the point at 74 degrees to be thinner to 20.5 micrometers after 15 minutes, so as to achieve the expected effect.
After two adjustments for a period of time, the frost line is stable and the thickness is consistent, so that the transparent/semitransparent PVDF film without lotus leaf edge can be produced.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (2)
1. A method for addressing the scalloping of a transparent, semi-permeable fluorine film, the method comprising:
s1, arranging a wide-angle high-precision high-speed camera for shooting an actual frost line of a cylindrical transparent or semi-permeable fluorine film on the inner side of a foam stabilizing frame of transparent or semi-permeable fluorine film production equipment, and drawing to obtain a horizontal plane frost line height distribution map image of 360 degrees;
s2, arranging an arc track on the inner side of a membrane bubble of transparent or semi-transparent fluorine membrane production equipment, arranging an X-ray thickness measuring device I on the arc track, arranging an arc track on the outer ring of the membrane bubble, arranging an X-ray thickness measuring device II matched with the X-ray thickness measuring device I on the arc track, and measuring by the X-ray thickness measuring device I and the X-ray thickness measuring device II to obtain a thickness image of the peripheral ring of the membrane bubble;
s3, introducing the 360-degree frost line height distribution diagram obtained in the step S1 into an automatic die head system, matching with an automatic air ring system of the automatic die head, adjusting on the points, and adjusting the frost line at certain points to be higher or lower, or adjusting the frost line at a large area to be higher or lower, or even the deflection of the whole film bubble;
s4, the thickness distribution diagram of the circumference obtained in the step S2 is led into an automatic die head system to guide a thickness adjusting system of the automatic die head, namely, heating points of the circumference are controlled to meet the adjustment of uneven thickness points.
2. A method for solving the problem of lotus leaf edge of transparent and semi-transparent fluorine film as claimed in claim 1, wherein the number of wide-angle high-precision high-speed cameras in the step S1 is 3, and the 3 wide-angle high-precision high-speed cameras are distributed at 120 ° angle on the circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211577122.8A CN116175946A (en) | 2022-12-09 | 2022-12-09 | Method for solving lotus leaf edge of transparent and semi-transparent fluorine film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211577122.8A CN116175946A (en) | 2022-12-09 | 2022-12-09 | Method for solving lotus leaf edge of transparent and semi-transparent fluorine film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116175946A true CN116175946A (en) | 2023-05-30 |
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ID=86441205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211577122.8A Pending CN116175946A (en) | 2022-12-09 | 2022-12-09 | Method for solving lotus leaf edge of transparent and semi-transparent fluorine film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116175946A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4189288A (en) * | 1977-05-13 | 1980-02-19 | Reifenhauser Kg | Apparatus for producing blown synthetic-resin foils and films |
| JP2001179823A (en) * | 1999-12-24 | 2001-07-03 | Placo Co Ltd | Method for adjusting film thickness in inflation film molding, device therefor and molding die used for this device |
| CN108472850A (en) * | 2016-03-28 | 2018-08-31 | 住友重机械摩登株式会社 | Film shaping device |
| JP2020163768A (en) * | 2019-03-29 | 2020-10-08 | 住友重機械工業株式会社 | Film molding apparatus |
| CN111745937A (en) * | 2019-03-29 | 2020-10-09 | 住友重机械工业株式会社 | Blown film forming device |
| CN113459460A (en) * | 2020-03-31 | 2021-10-01 | 住友重机械工业株式会社 | Blown film forming device |
-
2022
- 2022-12-09 CN CN202211577122.8A patent/CN116175946A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4189288A (en) * | 1977-05-13 | 1980-02-19 | Reifenhauser Kg | Apparatus for producing blown synthetic-resin foils and films |
| JP2001179823A (en) * | 1999-12-24 | 2001-07-03 | Placo Co Ltd | Method for adjusting film thickness in inflation film molding, device therefor and molding die used for this device |
| CN108472850A (en) * | 2016-03-28 | 2018-08-31 | 住友重机械摩登株式会社 | Film shaping device |
| JP2020163768A (en) * | 2019-03-29 | 2020-10-08 | 住友重機械工業株式会社 | Film molding apparatus |
| CN111745937A (en) * | 2019-03-29 | 2020-10-09 | 住友重机械工业株式会社 | Blown film forming device |
| CN113459460A (en) * | 2020-03-31 | 2021-10-01 | 住友重机械工业株式会社 | Blown film forming device |
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