CN112058582A - Polytetrafluoroethylene coating device - Google Patents
Polytetrafluoroethylene coating device Download PDFInfo
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- CN112058582A CN112058582A CN202010743988.6A CN202010743988A CN112058582A CN 112058582 A CN112058582 A CN 112058582A CN 202010743988 A CN202010743988 A CN 202010743988A CN 112058582 A CN112058582 A CN 112058582A
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- negative pressure
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- scraper
- 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
- 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
- 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
- B05C1/0817—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 removing partially liquid or other fluent material from the roller, e.g. scrapers
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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
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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
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/10—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed before the application
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06G—MECHANICAL OR PRESSURE CLEANING OF CARPETS, RUGS, SACKS, HIDES, OR OTHER SKIN OR TEXTILE ARTICLES OR FABRICS; TURNING INSIDE-OUT FLEXIBLE TUBULAR OR OTHER HOLLOW ARTICLES
- D06G1/00—Beating, brushing, or otherwise mechanically cleaning or pressure cleaning carpets, rugs, sacks, hides, or other skin or textile articles or fabrics
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0022—Glass fibres
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/047—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with fluoropolymers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Abstract
The invention provides a polytetrafluoroethylene coating device for effectively eliminating bubbles in a fabric coating in a polytetrafluoroethylene coating process, which comprises a rack, and a coating roller assembly, a feeding roller assembly, a thickness-fixing scraper assembly, a front ash removal assembly and a negative pressure assembly which are arranged on the rack, wherein the feeding roller assembly is arranged above the coating roller assembly, the thickness-fixing scraper assembly is arranged on the side part of the coating roller assembly, and the front ash removal assembly is arranged on the feeding side of the feeding roller assembly; the negative pressure component comprises a vacuum pump, a main air suction pipe, a negative pressure cover and an auxiliary negative pressure air delivery nozzle, the vacuum pump is communicated with the negative pressure cover through the main air suction pipe, the negative pressure cover is arranged right above the coating roller component and the back roller, the auxiliary negative pressure air delivery nozzle is arranged on the inner side of the opening end of the negative pressure cover, the air outlet of the auxiliary negative pressure air delivery nozzle faces the main air suction pipe, and the main air suction pipe is communicated with the negative pressure dust removal pipeline. The invention can quickly separate out the residual air bubbles in the polytetrafluoroethylene solution at the coating position, so that the finally formed coating has better quality.
Description
Technical Field
The invention relates to a coating device, in particular to a polytetrafluoroethylene coating device.
Background
Polytetrafluoroethylene (abbreviated as PTFE), is commonly referred to as a "non-stick coating" or "easy-to-clean material". The material has the characteristics of acid resistance, alkali resistance and various organic solvents resistance, and is almost insoluble in all solvents.
The glass fiber material has the excellent performances of non-combustibility, high temperature resistance, electric insulation, high tensile strength, good chemical stability and the like, and people utilize the characteristics of the glass fiber to prepare the glass fiber fabric, hope that the glass fiber fabric can maintain the characteristics, but because the glass fiber fabric is not wear-resistant, a protective layer needs to be coated.
Because of the many characteristics of polytetrafluoroethylene, it is commonly used as a coating on the surface of fiberglass fabrics. The formation of the coating is generally carried out by a direct method, i.e. the polytetrafluoroethylene dispersion solution is coated on the surface of the fabric serving as the base fabric by a coating device, and then the finished product is prepared by the working procedures of cooling, drying, rolling and the like. It follows that the quality of the surface coating of the fabric is highly dependent on the coating apparatus.
At present, the function and the structure of a coating device are single, and the coating device is mainly carried out in a mode that a material roller dips a coating solution in a polytetrafluoroethylene solution to roll and coat a fabric. Because the polytetrafluoroethylene needs to be stirred constantly when in a molten state, bubbles are generated in the solution and are difficult to overflow, and the residual bubbles after the polytetrafluoroethylene solution is rolled on the surface of the fabric cannot be discharged in time, so that the performance of the final fabric finished product is influenced.
In addition, the fabric must be subjected to dust removal treatment before coating, and the purpose is to prevent dust from entering the coating during coating and affecting the quality of a finished product. If the dust removing equipment cannot ensure a good dust removing effect, dust on the surface of the fabric remains and dust which is stained again when the fabric enters the coating device can also generate bubbles in the coating on the surface of the fabric in the coating process, so that the quality of a finished product is influenced.
Disclosure of Invention
The invention aims to provide a polytetrafluoroethylene coating device for effectively eliminating bubbles in a fabric coating in a polytetrafluoroethylene coating process, so that the fabric is subjected to secondary dust removal and polytetrafluoroethylene coating in a negative pressure environment, the coating quality is improved, and the problems in the background art are solved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a polytetrafluoroethylene coating device comprises a frame, and a coating roller assembly, a feeding roller assembly, a thickness-fixing scraper assembly, a front ash removal assembly and a negative pressure assembly which are arranged on the frame, wherein the feeding roller assembly is arranged above the coating roller assembly, the thickness-fixing scraper assembly is arranged on the side part of the coating roller assembly, and the front ash removal assembly is arranged on the feeding side of the feeding roller assembly; the feeding roller assembly comprises a front roller, a back roller and a rear roller which are sequentially arranged along the feeding direction, and the back roller is arranged right above the coating roller assembly; the front ash removing assembly comprises a negative pressure dust removing pipeline arranged below the side part of the front roller, and one end of the negative pressure dust removing pipeline is communicated with the negative pressure assembly; the negative pressure component comprises a vacuum pump, a main air suction pipe, a negative pressure cover and an auxiliary negative pressure air delivery nozzle, the vacuum pump is communicated with the negative pressure cover through the main air suction pipe, the negative pressure cover is arranged right above the coating roller component and the back roller, the auxiliary negative pressure air delivery nozzle is arranged on the inner side of the opening end of the negative pressure cover, the air outlet of the auxiliary negative pressure air delivery nozzle faces the main air suction pipe, and the main air suction pipe is communicated with the negative pressure dust removal pipeline.
Preferably, the coating roller assembly comprises a coating roller body, a coating roller fixing part, a coating liquid tank and a coating liquid tank height adjuster, the coating roller body is hinged to the coating roller fixing part, the coating liquid tank is arranged below the coating roller body, the bottom of the coating liquid tank is fixedly connected with the coating liquid tank height adjuster, the coating liquid tank height adjuster comprises a first linear motor and a first ball screw, the first linear motor is fixedly connected with the rack, and the first linear motor is connected with the bottom of the coating liquid tank through the first ball screw.
Preferably, the backing roll comprises a backing roll body, a backing roll fixing piece, a second ball screw and a second linear motor, the backing roll body is hinged to the backing roll fixing piece, the top of the backing roll fixing piece is fixedly connected with the end of the second ball screw, and the other end of the second ball screw is fixedly connected with the second linear motor.
Preferably, the thickness-fixing scraper component comprises a scraper, a scraper fixing clamp, an adjusting bolt, a scraper position adjuster, a scraper angle adjuster and an adjusting motor, the scraper is fixedly connected to the scraper fixing clamp, the adjusting bolt is arranged on the scraper fixing clamp, the scraper fixing clamp is fixedly connected to the scraper angle adjuster, the scraper angle adjuster is hinged to the scraper position adjuster, and the scraper position adjuster is connected with the adjusting motor.
Preferably, the negative pressure dust removal pipeline comprises a dust removal head, an L-shaped dust removal pipe and a filter screen, the dust removal head and the filter screen are respectively provided with two end parts of the L-shaped dust removal pipe, and the L-shaped dust removal pipe is communicated with the air suction main pipe through the filter screen.
The invention has the beneficial effects that: compared with the prior art, the polytetrafluoroethylene coating device has the advantages that the negative pressure component enables the coating working position of the fabric to generate negative pressure, so that residual bubbles in polytetrafluoroethylene solution at the coating position are quickly separated out, the quality of a finally formed coating is better, in addition, the air suction direction is from the coating layer of the fabric to the back surface of the fabric, the polytetrafluoroethylene solution can more quickly permeate into the fabric structure due to the acting force of air suction after being coated on the surface of the fabric, and the adhesion effect of the finally formed coating is better; the auxiliary negative pressure air supply nozzle ensures the air suction effect of the lowest point of the cover opening of the negative pressure cover, so that the air at the cover opening of the negative pressure cover at the lower part is quickly sucked to fill the air loss above the cover opening, and the air flow rate in the negative pressure cover is accelerated; the front dust removing component of the invention removes dust attached on the fabric before the fabric is coated, although the fabric has a dust removing step before entering the coating device, the fabric is easy to adsorb impurities during the conveying process from the dust removing device to the coating device, the front dust removing component effectively solves the problem, removes the dust in the fabric during coating, and ensures that no air bubble is generated during coating; and the air power source of the front ash removing component comes from the negative pressure component, so that the energy consumption is greatly saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the negative pressure hood of the present invention;
fig. 3 is a schematic structural view of the auxiliary negative pressure part of the present invention.
In the figure: 100. the device comprises a frame, 201, a coating roller body, 202, a coating roller fixing part, 203, a coating liquid tank, 204, a first linear motor, 205, a first ball screw, 301, a front roller, 302, a rear roller, 303, a back roller body, 304, a back roller fixing part, 305, a second ball screw, 306, a second linear motor, 401, a scraper, 402, a scraper fixing clamp, 403, an adjusting bolt, 404, a scraper position adjuster, 405, a scraper angle adjuster, 406, an adjusting motor, 500, a negative pressure dust removal pipeline, 501, a dust removal head, 502, an L-shaped dust removal pipe, 503, a filter screen, 601, a vacuum pump, 602, a main air suction pipe, 603, a negative pressure cover, 604, a negative pressure cover, a side opening, 605, an auxiliary negative pressure air supply nozzle, 606 and a main filter screen.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific examples in conjunction with the accompanying drawings. It is to be understood that the practice of the invention is not limited to the following examples, and that any variations and/or modifications may be made thereto without departing from the scope of the invention.
In the present invention, all parts and percentages are by weight, unless otherwise specified, and the equipment and materials used are commercially available or commonly used in the art. The methods in the following examples are conventional in the art unless otherwise specified. The components or devices in the following examples are, unless otherwise specified, standard parts or parts known to those skilled in the art, the structure and principle of which are known to those skilled in the art through technical manuals or through routine experimentation.
Example (b):
the polytetrafluoroethylene coating device shown in fig. 1 comprises a frame 100, and a coating roller assembly, a feeding roller assembly, a thickness-fixing scraper assembly, a front ash removing assembly and a negative pressure assembly which are arranged on the frame, wherein the feeding roller assembly is arranged above the coating roller assembly, the thickness-fixing scraper assembly is arranged on the side part of the coating roller assembly, and the front ash removing assembly is arranged on the feeding side of the feeding roller assembly. The effect of negative pressure subassembly makes the coating work position of fabric produce the negative pressure, makes the remaining bubble of coating department in the polytetrafluoroethylene solution precipitate fast, makes the final coating quality that forms better to, the air suction direction is from the coating of fabric towards the fabric back, and polytetrafluoroethylene solution coats in the fabric surface after, because the effort of air suction, can be more quick among the infiltration fabric structure, makes the final coating adhesion effect that forms better. The effect of preceding ash removal subassembly is that the dust that adheres to on the fabric is eliminated before being scribbled to the fabric, and although the fabric has a deashing step before getting into the coating device, the fabric is easy to adsorb impurity during getting into the coating device conveying from the deashing device, and this problem has effectively been solved to preceding ash removal subassembly, eliminates the dust in the fabric when coating, makes the bubble can not produce during the coating.
The coating roller assembly comprises a coating roller body 201, a coating roller fixing piece 202, a coating liquid box 203 and a coating liquid box height regulator, the coating roller body is hinged to the coating roller fixing piece, the coating liquid box is arranged below the coating roller body, the bottom of the coating liquid box is fixedly connected with the coating liquid box height regulator, the coating liquid box height regulator comprises a first linear motor 204 and a first ball screw 205, the first linear motor is fixedly connected with a rack, and the first linear motor is connected with the bottom of the coating liquid box through the first ball screw. The first linear motor drives the first ball screw to move, the height of the liquid coating box can be adjusted, the liquid feeding speed of the roller body of the coating roller is controlled, and polytetrafluoroethylene coating liquid is easily added.
The feed roller assembly comprises a front roller 301, a back roller and a back roller 302 which are sequentially arranged along the feeding direction, and the back roller is arranged right above the coating roller assembly. The backing roller comprises a backing roller body 303, a backing roller fixing piece 304, a second ball screw 305 and a second linear motor 306, the backing roller body is hinged to the backing roller fixing piece, the top of the backing roller fixing piece is fixedly connected with the end of the second ball screw, and the other end of the second ball screw is fixedly connected with the second linear motor. The second linear motor drives the second ball screw to move, so that the height position of the back roller body can be adjusted, and the distance between the back roller body and the coating roller body is sequentially controlled to adapt to coating of fabrics with different thicknesses.
The fixed-thickness scraper component comprises a scraper 401, a scraper fixing clamp 402, an adjusting bolt 403, a scraper position regulator 404, a scraper angle regulator 405 and an adjusting motor 406, the scraper is fixedly connected to the scraper fixing clamp, the adjusting bolt is arranged on the scraper fixing clamp, the scraper fixing rack is fixedly connected with the scraper angle regulator, the scraper angle regulator is hinged to the scraper position regulator, and the scraper position regulator is connected with the adjusting motor. The scraper position regulator passes through the axial relative position of motor and lead screw adjustment scraper fixation clamp and coating roller roll body, and scraper angle regulator passes through pin joint adjustment scraper fixation clamp and scraper position regulator's relative angle to this makes the scraper have for coating the proper interval and the proper angle of roll body, and the unnecessary polytetrafluoroethylene that will coat the roll body and take up scribbles liquid and scrape away from the roll body, makes it fall back again and scribble the liquid case.
Preceding ash removal subassembly is including locating the negative pressure dust removal pipeline 500 of preceding roller lateral part below, and negative pressure dust removal pipeline one end intercommunication negative pressure subassembly. The dust is rapidly taken away from the fabric by the negative pressure suction acting force of the negative pressure dust removal pipeline opening and enters the negative pressure dust removal pipeline. The negative pressure dust removal pipeline comprises a dust removal head 501, an L-shaped dust removal pipe 502 and a filter screen 503, the dust removal head and the filter screen are respectively provided with two end parts of the L-shaped dust removal pipe, the dust removal head is arranged below a fabric to be removed dust, and the L-shaped dust removal pipe is communicated with a suction main pipe through the filter screen. The design can prevent dust from separating from the negative pressure dust removal pipeline caused by external air disturbance, and the dust is attached to the filter screen after being sucked and cannot enter the suction main pipe of the negative pressure component.
The negative pressure assembly comprises a vacuum pump 601, a suction main pipe 602 and a negative pressure hood 603, the vacuum pump is communicated with the negative pressure hood through the suction main pipe, the negative pressure hood is arranged right above the coating roller assembly and the back roller, and the middle part of the suction main pipe is communicated with a negative pressure dust removal pipeline.
The lowest point of the cover opening of the negative pressure cover is lower than the coating point of the coating roller body, in order to avoid interfering the feeding and discharging of the fabric before and after coating, two side parts of the negative pressure cover are provided with negative pressure cover side openings 604, and the lowest point of the negative pressure cover side openings is higher than the fabric advancing position. The negative pressure cover side opening is arranged to play a negative role in negative pressure formation at the negative pressure cover opening, in order to ensure the air suction effect at the lowest point of the negative pressure cover opening, as shown in fig. 2, an auxiliary negative pressure air supply nozzle 605 is arranged on the inner side of the end part of the negative pressure cover opening, the air outlet of the auxiliary negative pressure air supply nozzle faces to the air suction main pipe, the auxiliary negative pressure air supply nozzle is communicated with an external high-pressure air source, high-pressure air is blown into the negative pressure cover through the auxiliary negative pressure air supply nozzle, the air flow rate in the negative pressure cover is accelerated, air at the lower negative pressure cover opening is quickly sucked to fill the air loss above the negative pressure cover opening, and the air suction effect at the.
As shown in fig. 3, the internal air flow channel of the auxiliary negative pressure air delivery nozzle has an obtuse included angle, the caliber of the air inlet end of the air flow channel is larger than that of the air outlet end, and high-pressure air flows out of the air flow channel and is then ejected obliquely upwards and faces the direction of the main air suction pipe.
In order to avoid the influence of dust in the main air suction pipe on the normal operation of the vacuum pump, a main filter screen 606 is arranged at the joint of the vacuum pump and the main air suction pipe.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (5)
1. A polytetrafluoroethylene coating device, its characterized in that: the polytetrafluoroethylene coating device comprises a frame, and a coating roller assembly, a feeding roller assembly, a thickness-fixing scraper assembly, a front ash removal assembly and a negative pressure assembly which are arranged on the frame, wherein the feeding roller assembly is arranged above the coating roller assembly, the thickness-fixing scraper assembly is arranged on the side part of the coating roller assembly, and the front ash removal assembly is arranged on the feeding side of the feeding roller assembly; the feeding roller assembly comprises a front roller, a back roller and a rear roller which are sequentially arranged along the feeding direction, and the back roller is arranged right above the coating roller assembly; the front ash removing assembly comprises a negative pressure dust removing pipeline arranged below the side part of the front roller, and one end of the negative pressure dust removing pipeline is communicated with the negative pressure assembly; the negative pressure component comprises a vacuum pump, a main air suction pipe, a negative pressure cover and an auxiliary negative pressure air delivery nozzle, the vacuum pump is communicated with the negative pressure cover through the main air suction pipe, the negative pressure cover is arranged right above the coating roller component and the back roller, the auxiliary negative pressure air delivery nozzle is arranged on the inner side of the opening end of the negative pressure cover, the air outlet of the auxiliary negative pressure air delivery nozzle faces the main air suction pipe, and the main air suction pipe is communicated with the negative pressure dust removal pipeline.
2. A polytetrafluoroethylene coating apparatus as set forth in claim 1, wherein: the coating roller assembly comprises a coating roller body, a coating roller fixing piece, a coating liquid box and a coating liquid box height adjuster, the coating roller body is hinged to the coating roller fixing piece, the coating liquid box is arranged below the coating roller body, the bottom of the coating liquid box is fixedly connected with the coating liquid box height adjuster, the coating liquid box height adjuster comprises a first linear motor and a first ball screw, the first linear motor is fixedly connected with a rack, and the first linear motor is connected with the bottom of the coating liquid box through the first ball screw.
3. A polytetrafluoroethylene coating apparatus as set forth in claim 1, wherein: the back roll comprises a back roll body, a back roll fixing piece, a second ball screw and a second linear motor, the back roll body is hinged to the back roll fixing piece, the top of the back roll fixing piece is fixedly connected with the end of the second ball screw, and the other end of the second ball screw is fixedly connected with the second linear motor.
4. A polytetrafluoroethylene coating apparatus as set forth in claim 1, wherein: the fixed-thickness scraper component comprises a scraper, a scraper fixing clamp, an adjusting bolt, a scraper position adjuster, a scraper angle adjuster and an adjusting motor, the scraper is fixedly connected to the scraper fixing clamp, the adjusting bolt is arranged on the scraper fixing clamp, the scraper fixing frame is fixedly connected with the scraper angle adjuster, the scraper angle adjuster is hinged to the scraper position adjuster, and the scraper position adjuster is connected with the adjusting motor.
5. A polytetrafluoroethylene coating apparatus as set forth in claim 1, wherein: the negative pressure dust removal pipeline comprises a dust removal head, an L-shaped dust removal pipe and a filter screen, the dust removal head and the filter screen are respectively provided with two end parts of the L-shaped dust removal pipe, and the L-shaped dust removal pipe is communicated with the air suction main pipe through the filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010743988.6A CN112058582A (en) | 2020-07-29 | 2020-07-29 | Polytetrafluoroethylene coating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010743988.6A CN112058582A (en) | 2020-07-29 | 2020-07-29 | Polytetrafluoroethylene coating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112058582A true CN112058582A (en) | 2020-12-11 |
Family
ID=73656285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010743988.6A Withdrawn CN112058582A (en) | 2020-07-29 | 2020-07-29 | Polytetrafluoroethylene coating device |
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| Country | Link |
|---|---|
| CN (1) | CN112058582A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182361A (en) * | 2013-04-02 | 2013-07-03 | 陕西生益科技有限公司 | Impregnation device capable of improving glass cloth wettability |
| CN103639094A (en) * | 2013-11-25 | 2014-03-19 | 向明强 | Method and device for continuous impregnation of material |
| CN207222253U (en) * | 2017-09-19 | 2018-04-13 | 佛山市顺德区普瑞特机械制造有限公司 | It is a kind of can special-shaped roller coating UV paint line |
| CN207353076U (en) * | 2017-09-08 | 2018-05-11 | 深圳市爱科华电子有限公司 | A kind of vacuum-latexed machine |
| CN210058782U (en) * | 2019-05-14 | 2020-02-14 | 云南新兴仁恒包装材料有限公司 | Coating structure of coating tool bit convenient to disassemble and assemble for compound machine |
-
2020
- 2020-07-29 CN CN202010743988.6A patent/CN112058582A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182361A (en) * | 2013-04-02 | 2013-07-03 | 陕西生益科技有限公司 | Impregnation device capable of improving glass cloth wettability |
| CN103639094A (en) * | 2013-11-25 | 2014-03-19 | 向明强 | Method and device for continuous impregnation of material |
| CN207353076U (en) * | 2017-09-08 | 2018-05-11 | 深圳市爱科华电子有限公司 | A kind of vacuum-latexed machine |
| CN207222253U (en) * | 2017-09-19 | 2018-04-13 | 佛山市顺德区普瑞特机械制造有限公司 | It is a kind of can special-shaped roller coating UV paint line |
| CN210058782U (en) * | 2019-05-14 | 2020-02-14 | 云南新兴仁恒包装材料有限公司 | Coating structure of coating tool bit convenient to disassemble and assemble for compound machine |
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Application publication date: 20201211 |
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| WW01 | Invention patent application withdrawn after publication |