CN117563898A - Comma scraper transfer coating head with high-precision coating thickness control - Google Patents
Comma scraper transfer coating head with high-precision coating thickness control Download PDFInfo
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- CN117563898A CN117563898A CN202311822476.9A CN202311822476A CN117563898A CN 117563898 A CN117563898 A CN 117563898A CN 202311822476 A CN202311822476 A CN 202311822476A CN 117563898 A CN117563898 A CN 117563898A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
- B05C11/048—Scrapers, i.e. metering blades having their edge oriented in the upstream direction in order to provide a reverse angle of attack
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0821—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by driving means for rollers or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
- B05C1/0834—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets the coating roller co-operating with other rollers, e.g. dosing, transfer rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1005—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material already applied to the surface, e.g. coating thickness, weight or pattern
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention provides a comma scraper transfer coating head with high-precision coating thickness control, which comprises a frame, wherein a transfer coating rubber roller is arranged on the frame, a coating rubber roller pushing servo mechanism connected with the transfer coating rubber roller is arranged on the right side of the transfer coating rubber roller, a coating steel roller is arranged on the left side of the transfer coating rubber roller, a double-sided comma scraper is arranged on the obliquely upper side of the coating steel roller, a trough mechanism is arranged below the coating steel roller, an included angle a is arranged between the connecting line of the double-sided comma scraper and the center of the coating steel roller and the vertical direction, the back climbing conveying angle of a base material through the coating steel roller after coating is completed is b, and b < a-3 DEG is satisfied between the included angle a between the connecting line of the double-sided comma scraper and the center of the coating steel roller and the vertical direction and the climbing conveying angle b. The invention has simple structure and convenient operation, adopts the double-sided comma scraper, realizes the effective control of the coating thickness and improves the coating uniformity through the structural design of the scraper installation angle and the backward climbing conveying angle.
Description
Technical Field
The invention relates to the technical field of coating equipment, in particular to a comma scraper transfer coating head with high-precision coating thickness control.
Background
The coater is a device for coating a layer of glue, paint or ink with specific functions on a coiled base material, drying and coiling the base material, and is mainly applied to the production of surface coating processes of films, papers and the like. The transfer coater is to adhere the coating to the substrate by connecting the coating roller and the back roller, and the coating roller and the back roller are separated to generate blank areas on the substrate. In the lithium battery industry, a transfer coater is still needed for coating the battery pole piece in the research and development stage and the small-batch proofing stage.
In the prior art, transfer coating and doctor blade coating are two different coating heads, and in the production process, function conversion is difficult to realize. For example, chinese patent publication No. CN202387634U discloses a transfer coater, an upper bracket and a lower bracket are provided on a frame, a doctor roller is rotatably assembled on the upper bracket, a coating roller which is arranged in parallel with the doctor roller and is matched with the doctor roller is rotatably assembled on the lower bracket, a knife gap is left between the coating roller and the doctor roller, the transfer coater comprises a lower driving device for driving the coating roller to move towards the doctor roller by driving the lower bracket, the lower driving device comprises two sets of servo driving mechanisms which are symmetrically arranged about the coating roller and synchronously act, each set of servo driving mechanism comprises a passive sliding block which is fixedly arranged on a corresponding part of one side of the coating roller of the lower bracket and a driving sliding block which is positioned below the passive sliding block and is matched with the passive sliding block in a pushing way, the driving sliding block is driven by a servo motor to move along the left-right direction, and at least one of two corresponding matched pushing contact surfaces on the driving sliding block and the passive sliding block is an inclined surface or an arc surface. The transfer coater can only perform transfer coating, and cannot perform blade coating alone. Another chinese patent publication No. CN203316341U discloses a doctor device for a coater, which comprises a doctor frame connected to a frame of the coater, a doctor blade corresponding to a glue spreader of the coater is pressed on the doctor frame through a doctor platen, a doctor frame adjusting shaft parallel to the doctor frame is movably arranged on the frame of the coater in a penetrating way, the doctor frame is connected with the doctor frame adjusting shaft in a rotating state around the doctor adjusting shaft, the doctor frame adjusting shaft is fixedly connected with an adjusting worm wheel in a penetrating way, an adjusting worm screw matched with the adjusting worm wheel in a driving way is supported on the frame of the coater, and the adjusting worm screw is connected with a hand wheel. The coater can only perform blade coating and cannot perform transfer coating. And the existing blade coater and transfer coater are difficult to effectively control the coating thickness and the coating uniformity.
Disclosure of Invention
Aiming at the defects of the prior art, the comma scraper transfer coating head with high-precision coating thickness control is provided, a coating rubber roller is arranged to push a servo mechanism, so that transfer coating and scraper coating can be realized, and when the scraper coating is carried out, the effective control of the coating thickness can be realized and the coating uniformity is improved through the structural design of the scraper mounting angle and the backward climbing conveying angle.
In order to achieve the technical scheme, the invention provides a comma scraper transfer coating head with high-precision coating thickness control, which comprises a frame, wherein a transfer coating rubber roll is arranged on the frame, a coating rubber roll pushing servo mechanism connected with the transfer coating rubber roll is arranged on the right side of the transfer coating rubber roll, a coating steel roll is arranged on the left side of the transfer coating rubber roll, a coating steel roll transmission mechanism and a transfer coating rubber roll transmission mechanism are respectively arranged at one ends of the coating steel roll and the transfer coating rubber roll, a double comma scraper is arranged on the oblique upper side of the coating steel roll, a trough mechanism is arranged below the coating steel roll, an included angle a is arranged between the central connecting line of the double comma scraper and the coating steel roll and the vertical direction, the angle b of the substrate which is conveyed backwards by the coating steel roll after coating is finished in a climbing way, and the included angle a between the central connecting line of the double comma scraper and the coating steel roll and the vertical direction and the angle b of climbing conveying meet b < a-3 degrees.
In the technical scheme, when in actual work, when in blade coating, the transfer coating rubber roller is pushed by the coating rubber roller to push the servo mechanism to pull the transfer coating rubber roller to move rightwards, so that a distance between the transfer coating rubber roller and the coating steel roller is kept to be about 5mm, at the moment, a substrate is guided into the transfer coating rubber roller through a guide roller (the transfer coating rubber roller is equivalent to a large guide roller), the transfer coating rubber roller reversely runs, the coating steel roller positively runs, the substrate is coated on the coating steel roller and is contacted with the coating in the trough mechanism, the surface of the substrate is coated with the coating, then the excessive coating on the surface of the substrate is scraped by the double-sided comma scraper, the quantitative control of the coating is realized, and finally the substrate is transferred into a drying oven through the guide roller arranged at the right upper part of the coating steel roller. In practical research, it is found that in the blade coating process, an included angle a between a connecting line of the double-sided comma scraper and the center of the coated steel roller and the vertical direction and an angle b for climbing conveying meet b < a-3 degrees, and only the cutting edge of the double-sided comma scraper is supported by the coated steel roller, and the coating is supported by the coated steel roller after being extruded and scraped by the double-sided comma scraper and passes through the cutting edge of the scraper, so that the accurate control of the coating thickness can be ensured, otherwise, the coating on the surface of the coated steel roller is easy to fluctuate along the transverse direction, so that the transverse thickness is uneven, and even the condition of substrate breakage occurs in serious cases.
When transfer coating is carried out, the transfer coating rubber roller is pushed by the coating rubber roller pushing servo mechanism to move leftwards, so that the transfer coating rubber roller is clung to the coating steel roller, a base material is guided into a coating area formed by the coating steel roller and the transfer coating rubber roller through a guide roller, the coating steel roller is used for scraping excessive coating on the surface of the coating steel roller through a double-sided comma scraper after absorbing the coating in a trough mechanism, then the coating steel roller is contacted with the base material, the quantitative coating is coated on the surface of the base material, and then the coated base material is transferred into a drying oven through the transfer coating rubber roller.
Preferably, the scraper lifting cylinder that vertical downward set up is installed to the top of two-sided comma scraper, the telescopic shaft of scraper lifting cylinder is connected with two-sided comma scraper, during actual operation, can adjust contact pressure between two-sided comma scraper and the coating steel roller through scraper lifting cylinder.
Preferably, a scraper gap detection mechanism is arranged between the double-sided comma scraper and the coated steel roller, and in actual operation, the gap between the double-sided comma scraper and the coated steel roller can be monitored in real time through the installed scraper gap detection mechanism, so that the coating quantity can be adjusted better.
Preferably, a scraper fine adjustment mechanism is arranged below the double-sided comma scraper, and the gap between the double-sided comma scraper and the coated steel roller can be adjusted through the scraper fine adjustment mechanism, so that the coating quantity can be accurately adjusted, and the coating precision is improved.
Preferably, a single-arm support unreeling mechanism is arranged on the frame, an unreeling deviation rectifying follow-up roller is arranged on the oblique upper side of the single-arm support unreeling mechanism, an unreeling tension swinging roller is arranged on the oblique upper side of the unreeling deviation rectifying follow-up roller, the unreeling tension swinging roller is arranged on the oblique lower side of the transfer coating rubber roller, and a plurality of guide rollers are arranged between the transfer coating rubber roller and the unreeling tension swinging roller.
Preferably, the included angle a is 15-20 degrees, and practical researches show that when the included angle a is 15-20 degrees, the coating thickness of the coating can be controlled more uniformly, and no scratch is generated on the surface of the coating. When the angle a is less than 15 °, scratches are easily generated on the surface of the coating, and when the angle a is more than 20 °, it is difficult to precisely control the thickness of the coating.
Preferably, the doctor gap detection mechanism is a detection block with inclination, the inclination angle c of the detection block is the same as the included angle a between the connecting line of the double-sided comma doctor and the center of the coated steel roller and the vertical direction, and practical research shows that when the inclination angle c of the detection block is the same as the included angle a, the change of the gap value between the double-sided comma doctor and the coated steel roller can be intuitively fed back, and the gap size after adjustment is directly fed back through a dial indicator (grating ruler), so that the debugging preparation time is shortened. The production efficiency is improved.
Preferably, an unreeling deviation rectifying electric eye is arranged between the unreeling deviation rectifying follow-up roller and the unreeling tension swing roller so as to improve unreeling quality.
Preferably, the stirring cylinder is installed to the top of silo mechanism, and the puddler is installed on the stirring cylinder, in the bottom of puddler can extend to silo mechanism, during actual operation, can stir silo mechanism in through the puddler to improve coating homogeneity and defoaming to the coating.
Preferably, a man-machine interface, a pneumatic control panel and a cabinet are arranged on the frame so as to set working parameters.
The comma scraper transfer coating head with high-precision coating thickness control provided by the invention has the beneficial effects that: the comma scraper transfer coating head with the high-precision coating thickness control is ingenious in design and simple in structure, integrates comma scraper coating and transfer coating on the same mechanism, and can meet more production requirements. Comma knife coating can realize continuous coating production, the coating thickness is uniform, and transfer coating can realize two technological requirements of continuous coating and gap coating. When in actual work, when the scraper coating is carried out, the transfer coating rubber roller is pushed by the coating rubber roller to push the servo mechanism to pull the transfer coating rubber roller to move rightwards, so that a distance between the transfer coating rubber roller and the coating steel roller is kept to be about 5mm, at the moment, the substrate is guided into the transfer coating rubber roller (the transfer coating rubber roller is equivalent to a large guide roller at the moment), the transfer coating rubber roller reversely runs, the coating steel roller positively runs, the substrate is coated on the coating steel roller and is contacted with the coating in the trough mechanism, the surface of the substrate is coated with the coating, then the excessive coating on the surface of the substrate is scraped by the double-sided comma scraper, the quantitative control of the coating is realized, and finally, the substrate is transferred into the drying oven through the guide roller arranged on the right upper part of the coating steel roller. In practical research, it is found that in the blade coating process, an included angle a between a connecting line of the double-sided comma scraper and the center of the coated steel roller and the vertical direction and an angle b for climbing conveying meet b < a-3 degrees, and only the cutting edge of the double-sided comma scraper is supported by the coated steel roller, and the coating is supported by the coated steel roller after being extruded and scraped by the double-sided comma scraper and passes through the cutting edge of the scraper, so that the accurate control of the coating thickness can be ensured, otherwise, the coating on the surface of the coated steel roller is easy to fluctuate along the transverse direction, so that the transverse thickness is uneven, and even the condition of substrate breakage occurs in serious cases. When transfer coating is carried out, the transfer coating rubber roller is pushed by the coating rubber roller pushing servo mechanism to move leftwards, so that the transfer coating rubber roller is clung to the coating steel roller, a base material is guided into a coating area formed by the coating steel roller and the transfer coating rubber roller through a guide roller, the coating steel roller is used for scraping excessive coating on the surface of the coating steel roller through a double-sided comma scraper after absorbing the coating in a trough mechanism, then the coating steel roller is contacted with the base material, the quantitative coating is coated on the surface of the base material, and then the coated base material is transferred into a drying oven through the transfer coating rubber roller. According to the invention, the coating rubber roller pushing servo mechanism is arranged, so that transfer coating and scraper coating can be realized, and when scraper coating is performed, effective control of coating thickness and improvement of coating uniformity can be realized through structural design of the scraper mounting angle and the backward climbing conveying angle.
Drawings
Fig. 1 is a perspective view of the assembly of the present invention.
Fig. 2 is a side cross-sectional view of the present invention when blade coating is performed.
Fig. 3 is a side cross-sectional view of the present invention when transfer coating is performed.
Fig. 4 is a side view of the present invention.
Fig. 5 is a front view of the present invention.
Fig. 6 is a top view of the present invention.
Fig. 7 is a partial structural installation schematic of the present invention.
In the figure: 1. coating a steel roller; 2. transferring and coating a rubber roller; 3. a double-sided comma scraper; 4. a trough mechanism; 5. a stirring cylinder; 6. a scraper lifting cylinder; 7. unreeling tension swing rollers; 8. a single-arm supporting unreeling mechanism; 9. a scraper gap detection mechanism; 10. a scraper fine-tuning mechanism; 11. the coating rubber roller pushes the servo mechanism; 12. coating steel roller transmission mechanism; 13. a transfer coating rubber roller transmission mechanism; 14. a human-machine interface; 15. a pneumatic control panel; 16. a cabinet; 17. unreeling deviation correcting follow-up roller; 18. unreeling deviation correcting electric eyes; 19. a guide roller; 20. a frame; 21. stirring rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present invention.
Examples: a comma scraper transfer coating head with high-precision coating thickness control.
Referring to fig. 1 to 6, a comma doctor blade transfer coating head for high precision coating thickness control, comprising: the frame 20, install on the frame 20 and shift coating rubber roll 2, coating steel roll 1 installs in the left side of shifting coating rubber roll 2, coating steel roll 1 and shift coating rubber roll 2's one end is installed coating steel roll drive mechanism 12 and is shifted coating rubber roll drive mechanism 13 respectively, and coating steel roll 1 and shift coating rubber roll 2 adopt the installation mode of direct connection drive, have improved transmission precision. The right side of the transfer coating rubber roll 2 is provided with a coating rubber roll pushing servo mechanism 11, the rubber roll pushing servo mechanism 11 controls the transfer coating rubber roll 2 to pop open and close to form a gap coating system, and when in actual work, when in blade coating, the transfer coating rubber roll 2 is pulled to move rightwards by the coating rubber roll pushing servo mechanism 11, so that a distance is kept between the transfer coating rubber roll 2 and the coating steel roll 1. When transfer coating is performed, the transfer coating rubber roll 2 can be pushed to move leftwards by the coating rubber roll pushing servo mechanism 11, so that a coating area is formed by clinging between the transfer coating rubber roll 2 and the coating steel roll 1, and further, doctor blade coating and transfer coating can be integrated on the same mechanism.
The double-sided comma scraper 3 is installed obliquely above the coating steel roller 1, the trough mechanism 4 is installed below the coating steel roller 1, and in actual operation, the coating steel roller 1 scrapes excessive coating on the surface of the coating steel roller 1 through the double-sided comma scraper 3 after absorbing the coating in the trough mechanism 4, then contacts with a substrate, coats the substrate with the quantified coating, and then transfers the coated substrate into a drying oven through the coating steel roller 2. The stirring cylinder 5 is installed to the top of silo mechanism 4, and puddler 21 installs on stirring cylinder 5, the bottom of puddler 21 can extend to in the silo mechanism 4, during actual operation, can stir in the silo mechanism 4 through puddler 21 to improve coating homogeneity and defoaming to the coating.
The doctor lift cylinder 6 of vertical decurrent setting is installed to the top of two-sided comma scraper 3, the telescopic shaft of doctor lift cylinder 6 is connected with two-sided comma scraper 3, during actual operation, can adjust contact pressure between two-sided comma scraper 3 and the coating steel roller 1 through doctor lift cylinder 6. The doctor gap detection mechanism 9 is installed between the double-sided comma doctor 3 and the coating steel roller 1, the gap between the double-sided comma doctor 3 and the coating steel roller 1 can be monitored in real time through the doctor gap detection mechanism 9, the doctor gap detection mechanism 9 is a detection block with inclination, the inclination angle c of the detection block is the same as the included angle a of the central connecting line of the double-sided comma doctor 3 and the coating steel roller 1 in the vertical direction, and the actual research shows that when the inclination angle c of the detection block is the same as the included angle a, the gap value change of the double-sided comma doctor 3 and the coating steel roller 1 can be intuitively fed back, and the gap size after adjustment is directly fed back through a micrometer (grating scale), so that the debugging preparation time is shortened, and the production efficiency is improved. The doctor fine adjustment mechanism 10 is installed to the below of two-sided comma scraper 3, and during actual operation can adjust the clearance between two-sided comma scraper 3 and the coating steel roller 1 through doctor fine adjustment mechanism 10, and then can accurate regulation coating amount, improves the coating precision.
In this embodiment, an included angle a is formed between the central line of the double-sided comma scraper 3 and the coated steel roller 1 and the vertical direction, the included angle a is 15-20 °, the optimal preferred angle of the included angle a is 18.5 °, and practical researches find that when the included angle a is 15-20 °, the coating thickness of the coating can be controlled more uniformly, and no scratch is generated on the surface of the coating, wherein the effect is optimal when the included angle a is 18.5 °. When the included angle a is smaller than 15 °, scratches are easily generated on the surface of the coating, and when the included angle a is larger than 20 °, it is difficult to precisely control the thickness of the coating. The angle of the back climbing conveying of the base material through the coating steel roller 2 after the coating is finished is b, and b < a-3 degrees are satisfied between an included angle a between the connecting line of the double-sided comma scraper 3 and the center of the coating steel roller 1 and the vertical direction and an angle b of the climbing conveying. In practical research, it is found that only if b < a-3 degrees are satisfied, namely, the cutting edge of the double-sided comma scraper 3 is supported by the coating steel roller 1, and when the coating passes through the cutting edge of the scraper after being extruded and scraped by the double-sided comma scraper 3, the coating steel roller 1 is supported, so that the accurate control of the coating thickness can be ensured, otherwise, the coating on the surface of the coating steel roller 1 is easy to fluctuate along the transverse direction, and the transverse thickness is uneven.
The single-arm support unreeling mechanism 8 is arranged on the frame 20, an unreeling deviation rectifying follow-up roller 17 is arranged on the oblique upper side of the single-arm support unreeling mechanism 8, an unreeling tension swinging roller 7 is arranged on the oblique upper side of the unreeling deviation rectifying follow-up roller 17, the unreeling tension swinging roller 7 is arranged on the oblique lower side of the transfer coating rubber roller 2, and two guide rollers 19 are arranged between the transfer coating rubber roller 2 and the unreeling tension swinging roller 7. In actual operation, the substrate to be coated is continuously unreeled through the single-arm support unreeling mechanism 8, and then is guided into a coating area consisting of the coating steel roller 1 and the transfer coating rubber roller 2 through the guide roller 19 after deviation correction and tension adjustment through the unreeling deviation correction follow-up roller 17 and the unreeling tension swing roller 7. The unreeling mechanism adopts a single-arm supporting structure, so that the installation space is saved, the tape path is simplified, and the base material is more convenient to replace during production. The linear bearings at the two ends of the axis of the follow-up roller are supported and connected with the deviation correcting mechanism through a connecting plate, and follow-up with the unreeling deviation correcting mechanism. The unreeling deviation correcting electric eye is fixed on the frame, and the whole mechanism has simple structure, reasonable design and convenient use. An unreeling deviation rectifying electric eye 18 is arranged between the unreeling deviation rectifying follow-up roller 17 and the unreeling tension swing roller 7 so as to improve unreeling quality. The frame 20 is also provided with a man-machine interface 14, a pneumatic control panel 15 and a cabinet 16 for setting working parameters.
The comma scraper transfer coating head with the high-precision coating thickness control is ingenious in design and simple in structure, integrates comma scraper coating and transfer coating on the same mechanism, and can meet more production requirements. Comma knife coating can realize continuous coating production, the coating thickness is uniform, and transfer coating can realize two technological requirements of continuous coating and gap coating. In actual operation, when the doctor blade coating is performed, the transfer coating rubber roll 2 is pulled by the coating rubber roll pushing servo mechanism 11 to move rightwards, so that a distance between the transfer coating rubber roll 2 and the coating steel roll 1 is kept to be about 5mm, at the moment, the substrate is guided into the transfer coating rubber roll 2 through the guide roll (the transfer coating rubber roll corresponds to a large guide roll at the moment), the transfer coating rubber roll 2 runs reversely, the coating steel roll 1 runs positively, the substrate is coated on the coating steel roll 1 and contacts with the coating in the trough mechanism 4, the surface of the substrate is coated with the coating, then the excessive coating on the surface of the substrate is scraped by the double-sided comma scraper 3, the quantitative control of the coating is realized, and finally the substrate is transferred into the drying oven through the guide roll 19 arranged on the right upper part of the coating steel roll 1. In practical research, it is found that in the blade coating process, the included angle a between the connecting line of the double-sided comma scraper 3 and the center of the coated steel roller 1 in the vertical direction and the climbing conveying angle b meet b < a-3 degrees, and only if b < a-3 degrees are met, namely, the cutting edge of the double-sided comma scraper 3 is supported by the coated steel roller 1, the coated steel roller 1 is supported when the coating passes through the cutting edge of the scraper after being extruded and scraped by the double-sided comma scraper 3, so that the accurate control of the coating thickness can be ensured, otherwise, the coating on the surface of the coated steel roller 1 is easy to fluctuate along the transverse direction, the transverse thickness is uneven, and even the situation of substrate breakage occurs in severe cases. When transfer coating is carried out, the transfer coating rubber roller 2 is pushed to move leftwards by the coating rubber roller pushing servo mechanism 11, so that the transfer coating rubber roller 2 is clung to the coating steel roller 1, a substrate is guided into a coating area formed by the coating steel roller 1 and the transfer coating rubber roller 2 by a guide roller, the coating steel roller 1 is used for scraping excessive coating on the surface of the coating steel roller 1 through the double-sided comma scraper 3 after absorbing the coating in the trough mechanism 4, then the coating is contacted with the substrate, the quantified coating is coated on the surface of the substrate, and then the coated substrate is transferred into a drying oven through the transfer coating rubber roller 2.
According to the invention, the coating rubber roller pushing servo mechanism 11 is arranged, so that transfer coating and scraper coating can be realized, and when scraper coating is performed, effective control of coating thickness and improvement of coating uniformity can be realized through structural design of a scraper mounting angle and a backward climbing conveying angle.
The foregoing is a preferred embodiment of the present invention, but the present invention should not be limited to the embodiment and the disclosure of the drawings, so that the equivalents and modifications can be made without departing from the spirit of the disclosure.
Claims (10)
1. The utility model provides a comma scraper of high accuracy coating thickness control shifts coating head, includes frame, its characterized in that: the frame is provided with a transfer coating rubber roller, the right side of the transfer coating rubber roller is provided with a coating rubber roller pushing servo mechanism connected with the transfer coating rubber roller, the coating steel roller is arranged on the left side of the transfer coating rubber roller, one ends of the coating steel roller and the transfer coating rubber roller are respectively provided with a coating steel roller transmission mechanism and a transfer coating rubber roller transmission mechanism, a double-sided comma scraper is arranged above the coating steel roller, the trough mechanism is arranged below the coating steel roller, an included angle a is formed between the connecting line of the center of the double-sided comma scraper and the coating steel roller and the vertical direction, the angle of the back climbing conveying of the base material through the coating steel roller after coating is b, and b < a-3 DEG is satisfied between the included angle a between the connecting line of the center of the double-sided comma scraper and the coating steel roller and the vertical direction and the angle b of the climbing conveying.
2. A comma doctor blade transfer head for high precision coating thickness control as recited in claim 1, wherein: the scraper lifting cylinder which is vertically arranged downwards is arranged above the double-sided comma scraper, and the telescopic shaft of the scraper lifting cylinder is connected with the double-sided comma scraper.
3. A comma doctor blade transfer head for high precision coating thickness control as recited in claim 1, wherein: and a scraper gap detection mechanism is arranged between the double-sided comma scraper and the coated steel roller.
4. A comma doctor blade transfer head for high precision coating thickness control as recited in claim 1, wherein: and a scraper fine adjustment mechanism is arranged below the double-sided comma scraper.
5. A comma doctor blade transfer head for high precision coating thickness control as recited in claim 1, wherein: the single-arm support unreeling mechanism is arranged on the frame, the unreeling deviation rectifying follow-up roller is arranged above the unreeling mechanism, the unreeling tension swing roller is arranged above the unreeling deviation rectifying follow-up roller, the unreeling tension swing roller is arranged below the transfer coating rubber roller, and a plurality of guide rollers are arranged between the transfer coating rubber roller and the unreeling tension swing roller.
6. A comma doctor blade transfer head for high precision coating thickness control as recited in claim 3, wherein: the included angle a is 15-20 degrees.
7. The comma doctor blade transfer coating head with high precision coating thickness control as recited in claim 6, wherein: the doctor gap detection mechanism is a detection block with inclination, and the inclination angle c of the detection block is the same as the included angle a between the connecting line of the double-sided comma doctor and the center of the coated steel roll and the vertical direction.
8. The comma doctor blade transfer coating head with high precision coating thickness control as recited in claim 5, wherein: and an unreeling deviation rectifying electric eye is arranged between the unreeling deviation rectifying follow-up roller and the unreeling tension swing roller.
9. A comma doctor blade transfer head for high precision coating thickness control as recited in claim 1, wherein: the stirring cylinder is installed above the trough mechanism, the stirring rod is installed on the stirring cylinder, and the bottom of the stirring rod can extend into the trough mechanism.
10. A comma doctor blade transfer head for high precision coating thickness control as recited in claim 1, wherein: and a human-computer interface, a pneumatic control panel and a cabinet are arranged on the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311822476.9A CN117563898A (en) | 2023-12-27 | 2023-12-27 | Comma scraper transfer coating head with high-precision coating thickness control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311822476.9A CN117563898A (en) | 2023-12-27 | 2023-12-27 | Comma scraper transfer coating head with high-precision coating thickness control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117563898A true CN117563898A (en) | 2024-02-20 |
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ID=89888287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311822476.9A Pending CN117563898A (en) | 2023-12-27 | 2023-12-27 | Comma scraper transfer coating head with high-precision coating thickness control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117563898A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120790430A (en) * | 2025-09-16 | 2025-10-17 | 福州基石医药科技有限公司 | Coating machine capable of accurately controlling coating thickness of liquid medicine |
-
2023
- 2023-12-27 CN CN202311822476.9A patent/CN117563898A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120790430A (en) * | 2025-09-16 | 2025-10-17 | 福州基石医药科技有限公司 | Coating machine capable of accurately controlling coating thickness of liquid medicine |
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