LU500096A1 - Leather roller coating device based on surface tension of round pit texture and roller coating method thereof - Google Patents
Leather roller coating device based on surface tension of round pit texture and roller coating method thereof Download PDFInfo
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- LU500096A1 LU500096A1 LU500096A LU500096A LU500096A1 LU 500096 A1 LU500096 A1 LU 500096A1 LU 500096 A LU500096 A LU 500096A LU 500096 A LU500096 A LU 500096A LU 500096 A1 LU500096 A1 LU 500096A1
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- roller
- leather
- coating
- disposed
- coating material
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C11/00—Surface finishing of leather
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
- C14B17/06—Work feeding or clamping devices
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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
- B05C1/0813—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 means for supplying liquid or other fluent material to the roller
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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
- B05C11/1007—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
- B05C11/1013—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 responsive to flow or pressure of liquid or other fluent material
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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
- B05C11/1026—Valves
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B7/00—Special leathers and their manufacture
- C14B7/02—Composite leathers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Composite Materials (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
Abstract
The present invention provides a leather roller coating device based on surface tension of round pit texture and a roller coating method thereof. The device includes: a coating roller, where the coating roller is cylindrical and several rows of storage portions are disposed at equal intervals on the outer surface of the coating roller; a leather delivery mechanism used to deliver leather to be coated; a leather levelling mechanism; and a feeding mechanism including a plurality of injectors, a coating material pool, and a pressure pump. The coating material can be precisely, controllably, and uniformly applied on the leather to be coated by means of the storage portions evenly arranged on the coating roller and the leather levelling mechanism, greatly reducing waste of the coating material and avoiding deformation, bulging, or the like during later use.
Description
LEATHER ROLLER COATING DEVICE BASED ON SURFACE TENSION oF 20%
BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to the field of leather roller coating technologies, and in particular, to a leather roller coating device based on surface tension of round pit texture and a roller coating method thereof.
Description of Related Art A leather preparation and finishing stage mainly includes the following processes: drying, staking, spreading, buffing, coating, embossing, and the like. In the coating process, a film-forming agent, a colorant, an additive, etc. are dispersed in water or an organic solvent to make up a coating material which is then applied to the surface of a dried crust leather sheet by means of scraping, spraying, or roller coating; and after drying, a uniform film layer is formed on the surface of the leather sheet. The coating process can improve the use performance of the leather sheet and further can repair a flawed leather sheet to improve the quality thereof.
A roller coating technique has been increasingly widely applied by factories in recent years. However, an existing method for applying a coating material on the circumferential surface of a coating roller fails to uniformly store the coating material on the surface of the coating roller. For example, during application of the coating material on the surface of the coating roller with a scraper, grooves on the surface of the coating roller cannot store equal amounts of the coating material, failing to uniformly apply the coating material on the leather. The non-uniform coating material adversely affects the hardness, tensile property, and other parameters of the leather, easily causing deformation, bulging, or the like of a leather product during later use, and further causing a certain degree of waste. Therefore, it is in urgent need of a roller coating method and device for precisely and uniformly applying a coating material on the leather surface.
SUMMARY OF THE INVENTION Technical Problem To solve the foregoing problem, the present invention provides a leather roller coating device based on surface tension of round pit texture and a roller coating method thereof. By means of evenly arranged storage portions on a coating roller and a leather levelling mechanism, the coating material can be precisely, controllably, and uniformly applied on leather to be coated, greatly reducing waste of the coating material and further avoiding deformation, bulging, or the like during later use.
Technical Solution 7500096 To achieve the foregoing objective, the present invention adopts the following technical solutions: The present invention provides a leather roller coating device based on surface tension of round pit texture, which includes: a coating roller disposed on a frame, where the coating roller is cylindrical and several rows of storage portions are disposed at equal intervals on the outer surface of the coating roller; a leather delivery mechanism located below the coating roller and used to deliver leather to be coated; a leather levelling mechanism, including a first levelling roller and a second levelling roller, where the second levelling roller is disposed on the leather delivery mechanism, and the first levelling roller is located above the second levelling roller; and a feeding mechanism disposed above the coating roller, and including a plurality of injectors arranged in rows, a coating material pool, and a pressure pump, where one ends of the injectors are disposed above the coating roller, the other ends of the injectors are connected to the coating material pool via an injector connector, flow limiting valves are disposed between the injector connector and the coating material pool, the pressure pump is connected to the coating material pool, and the flow limiting valves and the pressure pump are used to control a discharge amount and a discharge speed of the injectors.
Further, the storage portion in each row is formed by a plurality of equally spaced round pits, and a connecting line of circle centers of the round pits of the storage portion in each row is parallel to the axis of the coating roller; and the injectors have the same number as the round pits of the storage portion in each row, and correspond in position to the round pits in a one-to-one manner.
Further, first pipes and second pipes are disposed between the injector connector and the coating material pool; one ends of the first pipes are connected to the coating material pool, and the other ends of the first pipes are connected to one ends of the second pipes via the flow limiting valves respectively; and the other ends of the second pipes are connected to a flow path of the injector connector.
Further, the coating material pool includes: a case body disposed on the frame; a partition plate disposed on an inner wall of the case body via a slide connecting plate, where the partition plate partitions the case body into an upper cavity and a lower cavity; an airbag mechanism disposed in the upper cavity and including a rubber airbag, an airbag nozzle, and an airbag cavity, where the airbag cavity is fixed on the inner wall of the case body, the rubber airbag is connected to the pressure pump via the airbag nozzle, one end of the airbag nozzle is connected to the rubber airbag, the other end of the airbag nozzle passes through the airbag cavity and the L 5500096 wall of the case body and is connected to the pressure pump, a guide post is disposed on the partition plate, the upper portion of the rubber airbag is pressed against a top inner wall of the airbag cavity, the lower portion of the rubber airbag is pressed against the top surface of the guide post, and the guide post can slide up and down along the sidewall of the airbag cavity; and a main valve disposed on the case body, and including a plurality of gates, a rotating shaft, a hand wheel, and a gate limit mechanism, where the gates have the same number as the injectors and correspond in position to the injectors in a one-to-one manner, a joint between each of first pipes and the coating material pool is disposed with one of the gates, the gate is disposed on the rotating shaft, the rotating shaft passes through the sidewall of the case body and is rotatably disposed on the case body, the hand wheel is connected to one end of the rotating shaft and located out of the case body, and the gate limit mechanism is disposed on an outer wall of the case body and is used to control opening and closing of the gates.
Further, the device further includes: a scraper pressed against a leather output side of the coating roller; and a cleaning portion disposed on the frame and used to clean the leather delivery mechanism.
Further, the leather delivery mechanism includes: a leather input mechanism including a first delivery belt, a first power roller, and two driven rollers, where the first delivery belt is sleeved on the first power roller and the two driven rollers; and a leather output mechanism including a second delivery belt, a pressure roller, and a second power roller, where the second delivery belt is sleeved on the second levelling roller, the pressure roller, and the second power roller, the coating roller is located above the pressure roller, and coating is accomplished in a process of passing the leather to be coated from the leather input mechanism to the leather output mechanism.
Further, the cleaning portion includes a spray pipe, a water tank, and a scraping blade, where the spray pipe is disposed on an inner wall of the water tank; the bottom surface of the scraping blade is disposed on the water tank, and the top surface of the scraping blade is pressed against a cleaning region of the second delivery belt; and one side of the cleaning region is pressed against the second power roller, and the other side of the cleaning region is pressed against the scraping blade.
Further, the flow limiting valve includes: a flow limiting valve cavity internally disposed with a small ball, a spring, a movable magnetic core, and a static magnetic core, where the static magnetic core is disposed on the top of the flow limiting valve cavity, the movable magnetic core is located below the static magnetic core, a certain gap exists between the movable magnetic core and the static magnetic core, one end of the spring is disposed at the bottom of 11200096 movable magnetic core, the other end of the spring is disposed with the small ball, the small ball is pressed against an inlet of the flow limiting valve cavity, and an outer wall of the flow limiting valve cavity that corresponds to the static magnetic core is disposed with a flow limiting valve coil; a flow limiting valve inlet communicated with the first pipe at one end and communicated with the inlet of the flow limiting valve cavity at the other end; and a flow limiting valve outlet communicated with the second pipe at one end and communicated with an outlet of the flow limiting valve cavity at the other end. The present invention further provides a roller coating method of the leather roller coating device based on surface tension of round pit texture, which includes the following steps: S10: feeding a coating material, where the pressure pump is started to pressurize the rubber airbag, so that the rubber airbag inflates and the partition plate moves downwards to press the coating material in the lower cavity, and then the main valve is opened, so that the coating material flows to the first pipes, S20: storing the coating material, where a current of the flow limiting valve coil is controlled to adjust a flow speed of the coating material; and the coating material flows through the flow limiting valves to the injectors through the second pipes, and then drips from the injectors into the round pits of the storage portions row by row at a certain dripping speed; S30: coating with the coating material, where after all rows of the storage portions are filled with the coating material, the leather delivery mechanism is started to input leather, the leather is coated by the coating roller and then is delivered by the leather delivery mechanism to the leather levelling mechanism, and the leather levelling mechanism further levels the applied coating material on the leather and then delivers the leather to a next process; and S40: delivering the coating material remained on the surface of the second delivery belt to a delivery belt cleaning mechanism with the second delivery belt for cleaning.
Further, the rotation speed of the coating roller matches the dripping speed of the injectors, so that the coating material is dripped from the injectors into the round pits of the storage portions row by row.
Advantageous Effect Compared to the prior art, the foregoing technical solutions of the present invention have the following advantages: (1) In the leather roller coating device based on surface tension of round pit texture and the roller coating method thereof, storage portions formed by a plurality of round pits with the same size are provided and evenly distributed on the coating roller, and the storage portion in each row uniformly stores the same amount of the coating material. Further, in the present invention 00096 leather levelling mechanism is disposed, which can precisely, controllably, and uniformly apply the coating material on the surface of leather to be coated, avoiding deformation, bulging, or the like during later use of the leather.
5 (2) In the leather roller coating device based on surface tension of round pit texture and the roller coating method thereof, by adjusting the rotation speed of the coating roller, after the injectors fill the storage portion in one row with the coating material, the time when the storage portion in the next row is rotated below the injectors just coincides with the time when the injectors drip the coating material once again. In this way, the coating material is avoided from falling outside the coating roller and all the storage portions can be filled with the material, thus guaranteeing the roller coating efficiency and preventing waste of the coating material.
BRIEF DESCRIPTION OF THE DRAWINGS Specific implementations of the present invention are described in detail below with reference to the accompanying drawings, in order to make the technical solutions of the present invention and the advantageous effects apparent. FIG. 1 is a structural diagram of a leather roller coating device based on surface tension of round pit texture in an embodiment of the present invention; FIG. 2 is a structural diagram of a leather roller coating device (with a frame being removed) based on surface tension of round pit texture in an embodiment of the present invention; FIG. 3 is a sectional diagram of an injector connector in an embodiment of the present invention; FIG. 4 is a sectional diagram of a coating material pool in an embodiment of the present invention; FIG. 5 is a structural diagram of a flow limiting valve in an embodiment of the present invention; FIG. 6 is a structural diagram of a gate limit mechanism in an embodiment of the present invention; FIG. 7 is a partial enlarged diagram of a portion A in FIG. 2 in an embodiment of the present invention; FIG. 8 is a structural diagram of a cleaning portion in an embodiment of the present invention; and FIG. 9 is a flowchart of a roller coating method of the leather roller coating device based on surface tension of round pit texture in an embodiment of the present invention.
Meanings of numerals: LU500096
1. Coating roller, 11. Storage portion, 111. Round pit, 21. Leather input mechanism, 211. First delivery belt, 212. First power roller, 213. Driven roller, 22. Leather output mechanism, 221. Second delivery belt, 222. Pressure roller, 223. Second power roller, 224. Cleaning region, 31.
Injector, 32. Injector connector, 321. Flow path, 33. Coating material pool, 331. Case body, 332. Partition plate, 333. Guide post, 334. Slide connecting plate, 335. Upper cavity, 336. Lower cavity, 337. Sealing strip, 338. Coating material pool outlet, 34. Airbag mechanism, 341. Rubber airbag, 342. Airbag nozzle, 343. Airbag cavity, 35. Pressure pump, 36. Flow limiting valve, 361. Flow limiting valve cavity, 362. Small ball, 363. Spring, 364. Movable magnetic core, 365.
Static magnetic core, 366. Flow limiting valve coil, 367. Flow limiting valve inlet, 368. Flow limiting valve outlet, 37. First pipe, 38. Second pipe, 39. Main valve, 391. Gate, 392. Rotating shaft, 393. Hand wheel, 394. Gate limit mechanism, 395. Locking bolt, 396. Bolt bracket, 397. Dent, 4. Leather levelling mechanism, 41. First levelling roller, 42. Second levelling roller, 51. Scraper, 52. Cleaning portion, 521. Spray pipe, 522. Water tank, 523. Scraping blade, 6. Frame
DETAILED DESCRIPTION OF THE INVENTION The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some rather than all the embodiments of the present invention. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts all fall within the protection scope of the present invention.
In this embodiment, a leather roller coating device based on surface tension of round pit texture and a coating method thereof are provided. As shown in FIGs. 1 and 2, the device includes a coating roller 1, a leather delivery mechanism, a leather levelling mechanism 4, a feeding mechanism, a scraper, and a cleaning portion.
The coating roller 1 is cylindrical and disposed on a frame 6, and several rows of storage portions 11 are disposed at equal intervals on the outer surface of the coating roller 1. The storage portion 11 in each row is formed by a plurality of equally spaced round pits 111, and a connecting line of circle centers of the round pits 111 of the storage portion 11 in each row is parallel to the axis of the coating roller].
The leather delivery mechanism is disposed on the frame 6 and located below the coating roller 1, and is used to deliver leather to be coated. The leather delivery mechanism includes a leather input mechanism 21 and a leather output mechanism 22. The leather input mechanism 21 includes a first delivery belt 211, a first power roller 212, and two driven rollers 213. The fr1$p00096 delivery belt 211 is sleeved on the first power roller 212 and the two driven rollers 213. The leather output mechanism 22 includes a second delivery belt 221, a pressure roller 222, and a second power roller 223. The second delivery belt 221 is sleeved on a second levelling roller 42, the pressure roller 222, and the second power roller 223; and the coating roller 1 is located above the pressure roller 222. The leather to be coated is input by the leather input mechanism 21 to the coating roller 1 for coating, and is output by the leather output mechanism 22 to the leather levelling mechanism 4 after the coating is accomplished, thus completing a coating process.
The leather levelling mechanism 4 is disposed on the frame 6, and includes a first levelling roller 41 and a second levelling roller 42. The second levelling roller 42 is disposed on the leather delivery mechanism 2, and the first levelling roller 41 is located above the second levelling roller 42. The feeding mechanism is disposed above the coating roller 1, and includes a plurality of injectors 31 arranged in rows, a coating material pool 33, and a pressure pump 35. One ends of the injectors 31 are disposed above the coating roller 1, and the other ends of the injectors 31 are connected to the coating material pool 33 via an injector connector 32. Flow limiting valves 36 are disposed between the injector connector 32 and the coating material pool 33. The injectors 31 have the same number as the round pits 111 of the storage portion 11 in each row, and correspond in position to the round pits 111 in a one-to-one manner, thus guaranteeing that one injector 31 feeds one round pit 111 and one row of injectors 31 simultaneously feed one row of storage portion 11. The coating material is stored in the round pits 111 via surface tension.
By adjusting the rotation speed of the coating roller 1, after the injectors 31 fill the storage portion 11 in one row with the coating material, the time when the storage portion 11 in the next row is rotated below the injectors 31 just coincides with the time when the injectors 31 drip the coating material once again.
In this way, all the storage portions 11 can be filled with the material, and the coating material is avoided from falling outside the storage portions 11, thus preventing waste of the coating material.
The coating roller 1 has a diameter preferably ranging from 200 mm to 300 mm, and a rotation speed ranging from 1 r/min to 3 r/min.
The round pit 111 has a diameter preferably ranging from 7 mm to 8 mm, and a depth preferably ranging from 2 mm to 2.5 mm.
An interval between two adjacent round pits 111 in the same row of storage portion 11 ranges from 3 mm to 4 mm.
There are 63 to 79 rows of storage portions 11 on the surface of the coating roller 1, and the injectors 31 drip 63 to 237 drops of the coating material per minute.
For example, in a case where there are 63 rows of storage portions 11 on the surface of the coating roller 1 and the injectors 31 drip 63 drops per minute, the injectors 31 just fill all of the round pits 111 with 1100096 coating material at one revolution of the coating roller 1. In this case, a leather input speed preferably ranges from 0.63 m/min to 2.83 m/min. The pressure pump 35 is connected to the coating material pool 33, and the flow limiting valves 36 and the pressure pump 35 are used to control a discharge amount and a discharge speed of the injectors 31. After one row of storage portion 11 is filled with the coating material, the next row of storage portion 11 is in place by rotation. The flow limiting valves 36 control a discharge amount and a discharge speed of the injectors 31, ensuring that all rows of the storage portions 11 are filled with the coating material. First pipes 37 and second pipes 38 are disposed between the injector connector 32 and the coating material pool 33. One ends of the first pipes 37 are connected to the coating material pool 33, and the other ends of the first pipes 37 are connected to one ends of the second pipes 38 via the flow limiting valves 36 respectively. As shown in FIG. 3, the other ends of the second pipes 38 are connected to a flow path 321 of the injector connector 32. As shown in FIG. 4, the coating material pool 33 includes a case body 331, a partition plate 332, an airbag mechanism 34, and a main valve 39. The case body 331 is disposed on the frame
6. The partition plate 332 is disposed on an inner wall of the case body 331 via a slide connecting plate 334, and partitions the case body 331 into an upper cavity 335 and a lower cavity 336. The airbag mechanism 34 is disposed in the upper cavity 335, and the coating material for subsequent roller coating is placed in the lower cavity 336. The airbag mechanism 34 includes a rubber airbag 341, an airbag nozzle 342, and an airbag cavity 343. The airbag cavity 343 is fixed on the inner wall of the case body 331, and is used to accommodate the rubber airbag 341. The rubber airbag 341 is connected to the pressure pump 35 via the airbag nozzle 342. One end of the airbag nozzle 342 is connected to the rubber airbag 341, and the other end of the airbag nozzle 342 passes through the airbag cavity 343 and the top wall of the case body 331 and is connected to the pressure pump 35. A guide post 333 is disposed on the partition plate 332. The upper portion of the rubber airbag 341 is pressed against a top inner wall of the airbag cavity 343, and the lower portion of the rubber airbag 341 is pressed against the top surface of the guide post 333. The guide post 333 can slide up and down along the sidewall of the airbag cavity 343. After the pressure pump 35 applies pressure to the rubber airbag 341, the rubber airbag 341 inflates rapidly and pushes the guide post 333 to move downwards, so that the partition plate 332 slides along the slide connecting plate 334. The air pressure in the lower cavity 336 increases as the partition plate 332 slides downwards, and thus the coating material for subsequent roller coating in the lower cavity 336 is pushed into the first pipes 37. In order to avoid air leakage during downward movement of the partition plate 332, a joint between 1200096 slide connecting plate 334 and the partition plate 332 is disposed with a sealing strip 337. As shown in FIG. 5, the flow limiting valve 36 includes a flow limiting valve cavity 361, a flow limiting valve inlet 367, and a flow limiting valve outlet 368. A small ball 362, a spring 363, a movable magnetic core 364, and a static magnetic core 365 are disposed in the flow limiting valve cavity 361. The static magnetic core 365 is disposed on the top of the flow limiting valve cavity 361, the movable magnetic core 364 is located below the static magnetic core 365, and a certain gap exists between the movable magnetic core 364 and the static magnetic core 365. One end of the spring 363 is disposed at the bottom of the movable magnetic core 364, and the other end of the spring 363 is disposed with the small ball 362. The small ball 362 is pressed against an inlet of the flow limiting valve cavity 361. An outer wall of the flow limiting valve cavity 361 that corresponds to the static magnetic core 365 is disposed with a flow limiting valve coil 366. The flow limiting valve inlet 367 is communicated with the first pipe 37 at one end, and is communicated with the inlet of the flow limiting valve cavity 361 at the other end. The flow limiting valve outlet 368 is communicated with the second pipe 38 at one end, and is communicated with an outlet of the flow limiting valve cavity 361 at the other end. The coating material for subsequent roller coating enters the flow limiting valve 36 from the flow limiting valve inlet 367. After a hydraulic pressure produced by the coating material reaches a certain level, the small ball 362 is lifted up, and the coating material flows to the flow limiting valve outlet 368 through the flow limiting valve cavity 361. The flow limiting valve coil 366 is in parallel connection. A magnetic force can be adjusted by controlling the magnitude of the current through the flow limiting valve coil 366, and then the displacement of the movable magnetic core 364 in the flow limiting valve cavity 361 is controlled, thus controlling extension and contraction of the spring to adjust a flow speed of the coating material.
As shown in FIGs. 6 and 7, the main valve 39 is disposed on the case body 331, and includes a plurality of gates 391, a rotating shaft 392, a hand wheel 393, and a gate limit mechanism 394. The gates 391 have the same number as the injectors 31 and correspond in position to the injectors 31 in a one-to-one manner. A joint between each of first pipes 37 and the coating material pool 33 is disposed with one of the gates 391, and the gate 391 is disposed on the rotating shaft 392. The rotating shaft 392 passes through the sidewall of the case body 331 and is rotatably disposed on the case body 331. The hand wheel 393 is connected to one end of the rotating shaft 392, and located out of the case body 331. The gate limit mechanism 394 is disposed on an outer wall of the case body 331, and is used to control opening and closing of the gates 391. An end of the rotating shaft 392 that is connected to the hand wheel 393 is disposed with a dent 397. The gate limit mechanism 394 includes a locking bolt 395 and a bolt bradgdp00096 396, where the bolt bracket 396 is fixed out of the case body 331 and the locking bolt 395 is connected to the bolt bracket 396. The locking bolt 395 is rotatably pressed against the dent 397 to close the gate 391. The gate 391 is sector-shaped, and a curved surface thereof is pressed against an inner wall of the lower cavity 336 in a slidable manner. The gates 391 coincide with a rotation axis of the rotation shaft 392, facilitating overall control.
The scraper 51 is pressed against a leather output side of the coating roller 1. After the leather is coated by the coating roller 1, because a part of the leather may adhere to the surface of the coating roller 1 due to viscosity of the coating material, the scraper 51 is used to scrape the leather off the coating roller 1, so that the leather smoothly enters the leather output mechanism
22.
Two ends of the cleaning portion 52 are disposed on the frame 6, and the top surface of a scraping blade 523 of the cleaning portion 52 is pressed against the leather delivery mechanism 2. As shown in FIG. 8, the cleaning portion 52 includes a spray pipe 521, a water tank 522, and the scraping blade 523. The spray pipe 521 is disposed on an inner wall of the water tank 522. The bottom surface of the scraping blade 523 is disposed on the water tank 522, and the top surface of the scraping blade 523 is pressed against a cleaning region 224 of the second delivery belt 221. One side of the cleaning region 224 is pressed against the second power roller 223, and the other side of the cleaning region 224 is pressed against the scraping blade 523. During operation, the spray pipe 521 sprays water to the cleaning region 224, and the scraping blade 523 scrapes waste water off the cleaning region 224. Driven by the second power roller 223, the second delivery belt 221 constantly rotates, thus realizing cleaning of the whole second delivery belt 221. The waste water flows to the water tank 522 for treatment after being scraped off by the scraping blade 523.
The present invention further provides a roller coating method of the leather roller coating device based on surface tension of round pit texture, which, as shown in FIG. 9, includes the following steps: S10: Feed a coating material. The pressure pump 35 is started to pressurize the rubber airbag 341, so that the rubber airbag 341 inflates and the partition plate 332 moves downwards to increase the air pressure in the lower cavity 336, and the main valve 39 is opened, so that the coating material in the lower cavity 336 flows to the first pipes 37. S20: Store the coating material. A current of the flow limiting valve coil 366 is controlled to adjust a flow speed of the coating material. The coating material flows through the flow limiting valves 36 to the injectors 31 through the second pipes 38, and then drips from the injectors 31 into the round pits 111 of the storage portions 11 row by row at a certain dripping speed. S30: Coating with coating material.
After all rows of the storage portions 11 are filled with the coating material, the leathdp00096 delivery mechanism is started to input leather.
The leather is coated by the coating roller 1 and then is delivered by the leather delivery mechanism to the leather levelling mechanism 4. The leather levelling mechanism 4 further levels the applied coating material on the leather and then delivers the leather to a next process.
When the coating material in the storage portion 11 in each row is used up during roller coating, the row of storage portion 11 is moved to the injectors 31 by rotation of the coating roller 1 for timely replenishment, thus ensuring continuous roller coating.
S40: The coating material remained on the surface of the second delivery belt 221 is delivered to the cleaning portion with the second delivery belt 221 for cleaning.
The time when every two successive drops of coating material are dripped from each injector 31 to two adjacent rows of storage portions 11 is the same.
Embodiment 1 Description is made below by using an example in which polyurethane water emulsion is used as a leather coating agent for roller coating.
The polyurethane water emulsion has viscosity of 5 to 8 mPass at 20°C, and a density basically identical with water.
A coating roller has a diameter of 200 mm, and a total of 63 rows of storage portions are provided on the circumferential surface thereof.
A coating method is as follows: S10: Feed a coating material.
A pressure pump 35 is started to pressurize a rubber airbag 341 to 150.1 MPa, so that the rubber airbag 341 inflates and a partition plate 332 moves downwards to increase the air pressure in a lower cavity 336, and a main valve 39 is opened, so that a coating material in the lower cavity 336 flows to first pipes 37. S20: Store the coating material.
A current of a flow limiting valve coil 366 is controlled to adjust a flow speed of the coating material.
The coating material flows through the flow limiting valves 36 to injectors 31 through second pipes 38, and then drips from the injectors 31 into round pits 111 of storage portions 11 row by row at a dripping speed of 63 drops/min.
In this case, a coating roller 1 begins to rotate at a speed of 1 r/min.
S30: Coating with coating material.
After all rows of the storage portions 11 are filled with the coating material, a leather delivery mechanism is started to input leather at a speed of 0.63 m/min.
The leather is coated by the coating roller 1 and then is delivered by the leather delivery mechanism to a leather levelling mechanism 4. The leather levelling mechanism 4 further levels the applied coating material on the leather and then delivers the leather to a next process.
S40: The coating material remained on the surface of a second delivery belt 221 is delivered to a cleaning portion with the second delivery belt 221 for cleaning.
Roller coating is accomplished.
The above merely describes exemplary embodiments of the present invention, and is LiJp00096 intended to limit the patent protection scope of the present invention.
Any equivalent structures or equivalent process transformations made by using the description and the accompanying drawings of the present invention can be applied directly or indirectly in other related technical fields, and all fall within the patent protection scope of the present invention.
Claims (10)
1. À leather roller coating device based on surface tension of round pit texture, comprising: a coating roller disposed on a frame, wherein the coating roller 1s cylindrical and several rows of storage portions are disposed at equal intervals on outer surface of the coating roller; a leather delivery mechanism located below the coating roller and used to deliver leather to be coated; a leather levelling mechanism comprising a first levelling roller and a second levelling roller, wherein the second levelling roller is disposed on the leather delivery mechanism, and the first levelling roller is located above the second levelling roller; and a feeding mechanism disposed above the coating roller, and comprising a plurality of injectors arranged in rows, a coating material pool, and a pressure pump, wherein one ends of the injectors are disposed above the coating roller, and the other ends of the injectors are connected to the coating material pool via an injector connector; flow limiting valves are disposed between the injector connector and the coating material pool; the pressure pump is connected to the coating material pool, and the flow limiting valves and the pressure pump are used to control a discharge amount and a discharge speed of the injectors.
2. The leather roller coating device based on surface tension of round pit texture according to claim 1, wherein the storage portion in each row is formed by a plurality of equally spaced round pits, and a connecting line of circle centers of the round pits of the storage portion in each row is parallel to an axis of the coating roller; and the injectors have the same number as the round pits of the storage portion in each row, and correspond in position to the round pits in a one-to-one manner.
3. The leather roller coating device based on surface tension of round pit texture according to claim 2, wherein first pipes and second pipes are disposed between the injector connector and the coating material pool; one ends of the first pipes are connected to the coating material pool, and another ends of the first pipes are connected to one ends of the second pipes via the flow limiting valves respectively; and the other ends of the second pipes are connected to a flow path of the injector connector.
4. The leather roller coating device based on surface tension of round pit texture according to claim 3, wherein the coating material pool comprises: 7500096 a case body disposed on the frame; a partition plate disposed on an inner wall of the case body via a slide connecting plate, wherein the partition plate partitions the case body into an upper cavity and a lower cavity; an airbag mechanism disposed in the upper cavity and comprising a rubber airbag, an airbag nozzle, and an airbag cavity, wherein the airbag cavity is fixed on the inner wall of the case body; the rubber airbag is connected to the pressure pump via the airbag nozzle; one end of the airbag nozzle is connected to the rubber airbag, and another end of the airbag nozzle passes through the airbag cavity and the top wall of the case body and is connected to the pressure pump; a guide post is disposed on the partition plate; the upper portion of the rubber airbag is pressed against a top inner wall of the airbag cavity, and the lower portion of the rubber airbag is pressed against the top surface of the guide post; and the guide post is able to slide up and down along the sidewall of the airbag cavity; and a main valve disposed on the case body, and comprising a plurality of gates, a rotating shaft, a hand wheel, and a gate limit mechanism, wherein the gates have the same number as the injectors and correspond in position to the injectors in a one-to-one manner; a joint between each of first pipes and the coating material pool is disposed with one of the gates, and the gate is disposed on the rotating shaft; the rotating shaft passes through the sidewall of the case body and is rotatably disposed on the case body; the hand wheel is connected to one end of the rotating shaft, and located out of the case body; and the gate limit mechanism is disposed on an outer wall of the case body, and is used to control opening and closing of the gates.
5. The leather roller coating device based on surface tension of round pit texture according to claim 4, further comprising: a scraper pressed against a leather output side of the coating roller; and a cleaning portion disposed on the frame and used to clean the leather delivery mechanism.
6. The leather roller coating device based on surface tension of round pit texture according to claim 5, wherein the leather delivery mechanism comprises: a leather input mechanism comprising a first delivery belt, a first power roller, and two driven rollers, wherein the first delivery belt is sleeved on the first power roller and the two driven rollers; and a leather output mechanism comprising a second delivery belt, a pressure roller, and a second 00095 power roller, wherein the second delivery belt is sleeved on the second levelling roller, the pressure roller, and the second power roller; the coating roller is located above the pressure roller; and coating is accomplished in a process of passing the leather to be coated from the leather input mechanism to the leather output mechanism.
7. The leather roller coating device based on surface tension of round pit texture according to claim 6, wherein the cleaning portion comprises a spray pipe, a water tank, and a scraping blade; the spray pipe is disposed on an inner wall of the water tank; the bottom surface of the scraping blade is disposed on the water tank, and the top surface of the scraping blade is pressed against a cleaning region of the second delivery belt; and one side of the cleaning region is pressed against the second power roller, and another side of the cleaning region is pressed against the scraping blade.
8. The leather roller coating device based on surface tension of round pit texture according to claim 7, wherein the flow limiting valve comprises: a flow limiting valve cavity internally disposed with a small ball, a spring, a movable magnetic core, and a static magnetic core, wherein the static magnetic core is disposed on the top of the flow limiting valve cavity, the movable magnetic core is located below the static magnetic core, and a certain gap exists between the movable magnetic core and the static magnetic core; one end of the spring is disposed at the bottom of the movable magnetic core, and another end of the spring is disposed with the small ball; the small ball is pressed against an inlet of the flow limiting valve cavity; and an outer wall of the flow limiting valve cavity that corresponds to the static magnetic core is disposed with a flow limiting valve coil; a flow limiting valve inlet communicated with the first pipe at one end and communicated with the inlet of the flow limiting valve cavity at another end; and a flow limiting valve outlet communicated with the second pipe at one end and communicated with an outlet of the flow limiting valve cavity at another end.
9. A roller coating method of the leather roller coating device based on surface tension of round pit texture according to claim 8, comprising the following steps: S10: feeding a coating material, wherein the pressure pump is started to pressurize the rubber airbag, so that the rubber airbag inflates and the partition plate moves downwards to press the coating material in the lower cavity, and then the main valve is opened, so that the coating 00095 material flows to the first pipes; S20: storing the coating material, wherein a current of the flow limiting valve coil is controlled to adjust a flow speed of the coating material; and the coating material flows through the flow limiting valves to the injectors through the second pipes, and then drips from the injectors into the round pits of the storage portions row by row at a certain dripping speed; S30: coating with the coating material, wherein after all rows of the storage portions are filled with the coating material, the leather delivery mechanism is started to input leather; the leather is coated by the coating roller and then is delivered by the leather delivery mechanism to the leather levelling mechanism; and the leather levelling mechanism further levels the applied coating material on the leather and then delivers the leather to a next process; and S40: delivering the coating material remained on the surface of the second delivery belt to a delivery belt cleaning mechanism with the second delivery belt for cleaning.
10. The roller coating method of the leather roller coating device based on surface tension of round pit texture according to claim 9, wherein the rotation speed of the coating roller matches the dripping speed of the injectors, so that the coating material is dripped from the injectors into the round pits of the storage portions row by row.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010362022.8A CN111518970B (en) | 2020-04-30 | 2020-04-30 | Leather roller coating device based on surface tension of round pit texture and roller coating method thereof |
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| LU500096A1 true LU500096A1 (en) | 2021-11-15 |
| LU500096B1 LU500096B1 (en) | 2021-12-06 |
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| LU500096A LU500096B1 (en) | 2020-04-30 | 2020-05-12 | Leather roller coating device based on surface tension of round pit texture and roller coating method thereof |
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| CN (1) | CN111518970B (en) |
| LU (1) | LU500096B1 (en) |
| WO (1) | WO2021217715A1 (en) |
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| CN113265190A (en) * | 2021-04-30 | 2021-08-17 | 晋江市永建皮革制品有限公司 | Processing formula, processing technology and equipment for white yellowing-resistant cow double-layer leather |
| CN114766809B (en) * | 2022-05-10 | 2024-06-04 | 湖南奥郎儿童用品有限公司 | Portable schoolbag and manufacturing equipment thereof |
| CN115317967A (en) * | 2022-08-12 | 2022-11-11 | 李智聪 | Sludge discharge device with separation function for sewage treatment |
| CN116872003B (en) * | 2023-06-25 | 2024-01-26 | 山东通泰橡胶股份有限公司 | Energy-saving rubber conveyer belt and processing device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2329208A1 (en) * | 1973-05-03 | 1977-05-27 | Chiron Gabriel & Cie Sa Ets | PROCESS AND INSTALLATION FOR BONING OF CATTLE AND FORMING OF MEAT |
| FR2532953A1 (en) * | 1982-09-10 | 1984-03-16 | Bugey Maroquinerie Tanneur | Process and machine for the treatment of pieces of leather. |
| CN104388606B (en) * | 2014-11-20 | 2017-02-22 | 江苏连港皮革机械有限公司 | Leather mechanical roller coater |
| CN204276254U (en) * | 2014-11-27 | 2015-04-22 | 国网河南襄城县供电公司 | Small-sized brushing machine |
| CN104324840A (en) * | 2014-11-27 | 2015-02-04 | 国网河南襄城县供电公司 | Small-sized brushing machine |
| CN106042581B (en) * | 2016-05-27 | 2018-01-26 | 浙江世纪豪门家居科技有限公司 | Improved stone-plastic plate processing equipment |
| CN205775249U (en) * | 2016-06-29 | 2016-12-07 | 浙江飞虎新材料有限公司 | A kind of coating machine |
| CN207449405U (en) * | 2017-10-27 | 2018-06-05 | 绍兴仁和胶囊有限公司 | A kind of capsule printer |
| CN107899892A (en) * | 2017-11-17 | 2018-04-13 | 梁涛 | Supply assembly and application device |
| CN207685310U (en) * | 2017-12-22 | 2018-08-03 | 海宁卡森皮革有限公司 | A kind of efficient leather surface finishing machine |
| CN107961945A (en) * | 2018-01-22 | 2018-04-27 | 江苏连港皮革机械有限公司 | Sheepskin garment leather inverse roller coating, which is mended, hinders machine |
| CN207929473U (en) * | 2018-01-22 | 2018-10-02 | 江苏连港皮革机械有限公司 | Sheepskin garment leather inverse roller coating benefit hinders machine |
| CN108842012A (en) * | 2018-06-25 | 2018-11-20 | 陈玉海 | A kind of high-performance leather green manufacturing numerical control leather finish device |
| KR101931962B1 (en) * | 2018-07-16 | 2018-12-24 | 이태구 | Leather Processing Machine and Method using thereof |
| CN209866498U (en) * | 2019-04-26 | 2019-12-31 | 常州瑞赛激光技术有限公司 | Non-full-coverage diaphragm coating device |
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2020
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- 2020-05-12 LU LU500096A patent/LU500096B1/en active IP Right Grant
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| CN111518970A (en) | 2020-08-11 |
| WO2021217715A1 (en) | 2021-11-04 |
| LU500096B1 (en) | 2021-12-06 |
| CN111518970B (en) | 2021-05-18 |
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