CN112917874A - Preparation and forming method of polyurethane film - Google Patents
Preparation and forming method of polyurethane film Download PDFInfo
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- CN112917874A CN112917874A CN202110093891.XA CN202110093891A CN112917874A CN 112917874 A CN112917874 A CN 112917874A CN 202110093891 A CN202110093891 A CN 202110093891A CN 112917874 A CN112917874 A CN 112917874A
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- cooling
- polyurethane film
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/465—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
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- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a polyurethane film preparation and forming method, which uses polyurethane film preparation and forming equipment, wherein the polyurethane film preparation and forming equipment comprises a base and a cooling device, and the upper surface of the base is provided with the cooling device. The invention can solve the following problems of cooling treatment in the preparation process of the polyurethane film at present: when the existing polyurethane film which is just extruded is cooled, the polyurethane film is simply passed through water cooling equipment once, so that the heat of the film cannot be completely dissipated, and the internal heat is difficult to dissipate due to the fact that the film is overlapped and thickened, so that the problem that the polyurethane film becomes thin, thick and deformed due to overhigh heat is caused, and the use value of the polyurethane film is reduced; and the surface of the polyurethane film is not flattened, secondary processing is needed, and waste of manpower, material resources and time is caused.
Description
Technical Field
The invention relates to the field of film production, in particular to a preparation and forming method of a polyurethane film.
Background
With the increasingly wide application field of polymer films and the increasingly high requirements on the performance of film materials, the common films of poly-alum and poly-olefin cannot completely meet the market demands, under the condition, the polyurethane films are produced at the same time, the polyurethane films are mainly prepared by the processes of extrusion, calendering, blow molding and the like, and due to the characteristics of the molecular structure of polyurethane, people can change the elasticity, the hardness and the hydrophilicity of the polyurethane films by adjusting the proportion of polyurethane block components. Therefore, the polyurethane film has excellent high tension, waterproof and air permeability, toughness and ageing resistance as well as excellent biological and blood compatibility and chemical resistance as the polyurethane elastomer. The fabric is widely applied to a plurality of fields of medical treatment and health, high-grade textile fabrics, industry and the like, and is popular and favored by users.
The cooling treatment in the process of preparing the polyurethane film at present has the following problems:
1. when the existing polyurethane film which is just extruded is cooled, the polyurethane film is simply passed through water cooling equipment once, then residual moisture on the film is dried, then the polyurethane film is rolled, and after the polyurethane film which is not completely cooled is rolled, the internal heat is difficult to dissipate due to the fact that the film is overlapped with the film to be thicker, so that the problem that the polyurethane film becomes thinner, thicker and deformed due to overhigh heat is caused, and the use value of the polyurethane film is reduced;
2. when cooling treatment is carried out on the existing polyurethane film which is just extruded by extrusion molding, the surface of the polyurethane film is not flattened, so that the surface of the polyurethane film is easily wrinkled, and then after cooling treatment is carried out on the polyurethane film, and because of the viscosity between water molecules during water cooling, the problem that wrinkles appear on the surface of the polyurethane film is easily caused, the wrinkles cannot be removed easily, and if secondary processing is needed, the waste of manpower and material resources in time can be caused.
Disclosure of Invention
The invention aims to provide a polyurethane film preparation and forming method to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a polyurethane film preparation and forming method uses a polyurethane film preparation and forming device, the polyurethane film preparation and forming device comprises a base and a cooling device, and the concrete method when the polyurethane film preparation and forming device is used for preparing the polyurethane film is as follows:
step one, preparation operation: debugging the polyurethane film preparation forming equipment;
step two, extruding and forming a polyurethane film: heating, melting and plasticizing the crystallized and dried polyurethane slices through an existing extruder, and then extruding the polyurethane slices through a die orifice of a machine head of the extruder to enable the molten material to cling to a calendering roller, and rolling and molding the molten material by the calendering roller;
step three, cooling and drying the polyurethane film: the polyurethane film rolled and formed in the second step passes through the cooling device, then the cooling device cools the polyurethane film to enable the polyurethane film to be completely formed, and the formed polyurethane film is dried by the existing drying equipment;
step four, rolling and packaging the polyurethane film: rolling the polyurethane film dried in the third step by using a rolling roller, and then packaging and warehousing;
the upper surface of the base is provided with a cooling device; wherein:
the cooling device comprises a cooling frame body, a front guide roller, a smoothing unit, an adaptive sliding groove, an adaptive sliding block, an adaptive roller, a cooling long roller and a rear guide roller, wherein the upper surface of a base is provided with the cooling frame body, a pre-cooling groove, a pre-drying groove and a cooling clapboard are sequentially arranged in the cooling frame body from left to right along the length direction of the cooling frame body, the adjacent cooling clapboard is arranged between the pre-cooling groove and the pre-drying groove, the upper end of the left side of the pre-cooling groove is provided with the front guide roller, the upper end of the cooling clapboard between the pre-cooling groove and the pre-drying groove is symmetrically provided with the smoothing unit, the left side of the interior of the pre-cooling groove and the right side of the interior of the pre-drying groove are symmetrically provided with the adaptive sliding groove, the adaptive sliding block is slidably mounted in the adaptive sliding groove, the adaptive roller, the pre-drying groove is internally and vertically symmetrically provided with hot air blowers, a plurality of cooling long rollers are uniformly arranged in the cooling groove and are distributed in an S shape, and the upper end of the right side of the pre-drying groove is provided with a rear guide roller;
the smoothing unit comprises smoothing slideways, smoothing sliding plates, smoothing sliding blocks, smoothing rollers and smoothing screw rods, the smoothing slideways are symmetrically arranged above cooling partition plates between a pre-cooling groove and a cooling groove and above the cooling partition plates between the cooling groove and a pre-drying groove, the smoothing sliding plates and the smoothing sliding blocks are slidably mounted in the smoothing slideways, supporting springs are connected between the smoothing sliding plates and the cooling groove, the ends of the cooling partition plates between the pre-cooling groove and the upper ends of the cooling partition plates between the cooling groove and the pre-drying groove, the smoothing rollers are arranged between the two smoothing sliding blocks at opposite positions on the front side wall and the rear side wall in the cooling frame body, the upper end of the processing frame body is connected with the smoothing sliding plates through the smoothing screw rods, and the processing frame body is connected with the smoothing screw rods in a thread fit mode.
As a further scheme of the invention: the inside symmetry of back wall has seted up the stretch-draw cavity before the cooling framework, be provided with a plurality of stretch-draw bent axle in the stretch-draw cavity, and adjacent stretch-draw bent axle mounted position is opposite, stretch-draw bent axle below slides and is provided with stretch-draw push rod and connects through the stretch-draw connecting rod between the two, stretch-draw bent axle top is provided with stretch-draw motor and connects through the belt drive between the two, the both ends symmetry slidable mounting of cooling long roll has the stretch-draw slide bar, be connected through stretch-draw branch between the lower extreme of stretch-draw push rod and the one end of stretch-draw slide bar, the one end of stretch-draw slide bar is passed through the hinge rotation with stretch-draw branch one end and is connected, be connected through the.
As a further scheme of the invention: the two ends of the surface of the smoothing roller are symmetrically provided with smoothing scrapers which are of spiral structures.
As a further scheme of the invention: be provided with the cooling drum on the cooling long roll, it evenly is provided with a plurality of vibration slide to prolong its length direction in the cooling drum, it is provided with a plurality of vibration slider to evenly slide along its circumference direction in the vibration slide, a plurality of vibration piece about evenly establishing on the cooling long roll, vibration slider and vibration piece sliding connection and be connected with vibrating spring between the two, the inside vibration cavity that has seted up of cooling long roll, it is provided with the vibration kicking block to slide between the adjacent vibration piece, and be connected with reset spring between cooling long roll and the vibration kicking block, both ends symmetry slidable mounting has the vibration slide bar in the vibration cavity, evenly be provided with a plurality of vibration lug on the vibration slide bar, cooperation contact between vibration kicking block one end and the vibration lug, stretch-draw slide bar passes through the hinge rotation with vibration slide bar one end and.
As a further scheme of the invention: the stretching cavity top in the wall is provided with the drive cavity before the cooling framework, and the one end that lies in two smoothing rollers of same department is all connected and is connected through bevel gear meshing between the two through the one end of L type branch and interlock axostylus axostyle, the interlock axostylus axostyle is elastic telescopic structure, connects through the belt drive between two interlock axostylus axostyles that lie in same drive cavity.
As a further scheme of the invention: the drive mechanism is characterized in that a drive motor is arranged in the middle of the smoothing sliding plate, drive rollers are symmetrically arranged at two ends of the smoothing sliding plate, the two drive rollers located in the same drive cavity are connected through a drive belt, one end of the linkage shaft lever is connected with the drive rollers through the drive shaft lever, a positioning lug is arranged on one L-shaped supporting rod located above the drive cavity, and a positioning pressing block is arranged on the drive belt and is in matched contact with the positioning pressing block.
Compared with the prior art, the invention has the following advantages:
the cooling treatment in the preparation process of the polyurethane film can be solved, and the following problems exist:
1. when the existing polyurethane film which is just extruded is cooled, the polyurethane film is simply passed through water cooling equipment once, then residual moisture on the film is dried, then the polyurethane film is rolled, and after the polyurethane film which is not completely cooled is rolled, the internal heat is difficult to dissipate due to the fact that the film is overlapped with the film to be thicker, so that the problem that the polyurethane film becomes thinner, thicker and deformed due to overhigh heat is caused, and the use value of the polyurethane film is reduced;
2. when cooling treatment is carried out on the existing polyurethane film which is just extruded by extrusion molding, the surface of the polyurethane film is not flattened, so that the surface of the polyurethane film is easily wrinkled, and then after cooling treatment is carried out on the polyurethane film, and because of the viscosity between water molecules during water cooling, the problem that wrinkles appear on the surface of the polyurethane film is easily caused, the wrinkles cannot be removed easily, and if secondary processing is needed, the waste of manpower and material resources in time can be caused.
3. When the device cools the polyurethane film which is just extruded, the arrangement mode of the cooling long rollers in the cooling tank can cool the polyurethane film with longer size in a limited space at one time, so that the cooling efficiency of the film is improved, and the cooling long rollers can perform stretching treatment in an elastic deformation range on the pre-cooled polyurethane film under the action of a stretching motor matched with some mechanisms, so that the film can be thinner, the heat in the film can be rapidly dissipated, the cooling long rollers can also form a vibration effect, and the heat dissipation efficiency and the heat dissipation effect of the film are effectively improved;
4. when the device cools the polyurethane film which is just extruded, the flattening unit can flatten the surface of the film before the polyurethane film enters the cooling groove, and the flattening unit can flatten the surface of the film after the polyurethane film comes out of the cooling groove, so that the flatness of the surface can be ensured before and after the polyurethane film is cooled and formed, and the production quality of the polyurethane film is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a flow chart of the operation of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a schematic view of the front cross-sectional structure of the present invention;
FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 3 in accordance with the present invention;
FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 3 in accordance with the present invention;
FIG. 6 is an enlarged view of FIG. 3 at C of the present invention;
FIG. 7 is an enlarged view of FIG. 4 at D in accordance with the present invention;
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further explained with reference to fig. 1 to 7.
A polyurethane film preparation and forming method uses a polyurethane film preparation and forming device, the polyurethane film preparation and forming device comprises a base 1 and a cooling device 2, and the concrete method when the polyurethane film preparation and forming device is used for preparing the polyurethane film is as follows:
step one, preparation operation: debugging the polyurethane film preparation forming equipment;
step two, extruding and forming a polyurethane film: heating, melting and plasticizing the crystallized and dried polyurethane slices through an existing extruder, and then extruding the polyurethane slices through a die orifice of a machine head of the extruder to enable the molten material to cling to a calendering roller, and rolling and molding the molten material by the calendering roller;
step three, cooling and drying the polyurethane film: the polyurethane film rolled and formed in the second step passes through the cooling device 2, then the cooling device 2 cools the polyurethane film to enable the polyurethane film to be completely formed, and the formed polyurethane film is dried by the existing drying equipment;
step four, rolling and packaging the polyurethane film: rolling the polyurethane film dried in the third step by using a rolling roller, and then packaging and warehousing;
the upper surface of the base 1 is provided with a cooling device 2; wherein:
the cooling device 2 comprises a cooling frame body 20, a front guide roller 21, a leveling unit 22, an adaptive sliding groove 23, an adaptive sliding block 24, an adaptive roller 25, a long cooling roller 26 and a rear guide roller 27, the upper surface of the base 1 is provided with the cooling frame body 20, a pre-cooling groove 10, a cooling groove 11, a pre-drying groove 12 and a cooling partition plate 13 are sequentially arranged in the cooling frame body 20 from left to right along the length direction, the cooling partition plate 13 is arranged between the cooling groove 11 and the pre-drying groove 12 and is adjacent to the pre-cooling groove, the front guide roller 21 is arranged at the upper end of the left side of the pre-cooling groove 10, the leveling unit 22 is symmetrically arranged at the upper end of the cooling partition plate 13 between the pre-cooling groove 10 and the cooling groove 11 and the upper end of the cooling partition plate 13 between the cooling groove 11 and the pre-drying groove 12, the adaptive sliding groove 23 is symmetrically provided with the adaptive sliding block 24, the adaptive sliding block 24 is connected with the adaptive, the front and rear bottoms in the pre-cooling tank 10 and the front and rear bottoms in the cooling tank 11 are symmetrically provided with water flowing pipelines 14, the pre-drying tank 12 is internally and vertically symmetrically provided with hot air blowers 15, the cooling tank 11 is uniformly provided with a plurality of cooling long rollers 26, the cooling long rollers 26 are arranged in an S shape, and the upper end of the right side of the pre-drying tank 12 is provided with a rear guide roller 27;
during specific work, circulating cooling water is introduced into the pre-cooling groove 10 and the cooling groove 11, then the rolled polyurethane film passes through the front guide roller 21, the adaptive roller 25, the smoothing unit 22, the cooling long roller 26, the smoothing unit 22, the adaptive roller 25 and the rear guide roller 27, then under the traction of polyurethane film subsequent processing equipment, the polyurethane film is cooled and shaped firstly through the pre-cooling groove 10, then is completely cooled and cooled in the cooling groove 11, finally is subjected to primary drying treatment in the pre-drying groove 12 by the hot air blower 15, and the adaptive roller 25 on the adaptive sliding block 24 can tension the polyurethane film under the action of an adaptive spring so as to ensure the smooth operation of the polyurethane film in the whole cooling process.
The smoothing unit 22 comprises a smoothing slide way 220 and a smoothing sliding plate 221, the device comprises a smoothing slider 222, a smoothing roller 223 and a smoothing screw 224, wherein smoothing slideways 220 are symmetrically arranged at positions above a cooling partition plate 13 between a pre-cooling groove 10 and a cooling groove 11 and at positions above the cooling partition plate 13 between the cooling groove 11 and a pre-drying groove 12, a smoothing sliding plate 221 and the smoothing slider 222 are slidably mounted in the smoothing slideways 220, the smoothing sliding plate 221 is positioned above the smoothing slider 222, a supporting spring is connected between the smoothing sliding plate 221 and the supporting spring, the end of the cooling partition plate 13 between the pre-cooling groove 10 and the cooling groove 11 and the upper end of the cooling partition plate 13 between the cooling groove 11 and the pre-drying groove 12 are provided with the smoothing roller 223, the smoothing roller 223 is arranged between the two smoothing sliders 222 at opposite positions on the front side wall and the rear side wall in a cooling frame body 20, the upper end of a treatment frame body is connected with the smoothing sliding plate 221 through the smoothing screw 224, and the treatment frame body is connected with the smoothing;
during specific work, the smoothing screw 224 is rotated to enable the smoothing sliding plate 221 to slide in the smoothing sliding channel 220, then the smoothing sliding block 222 is pushed to be close to the upper end of the cooling partition plate 13 under the action of the supporting spring, so that the distance between two smoothing rollers 223 at the same position is adjusted, the surfaces of the polyurethane films, which can be better, of the smoothing rollers 223 are subjected to smoothing treatment, the problem that wrinkles appear on the surfaces of the polyurethane films is avoided, and the use value of the polyurethane films is guaranteed.
The two ends of the surface of the smoothing roller 223 are symmetrically provided with smoothing scrapers 225, and the smoothing scrapers 225 are of spiral structures; during specific work, when the smoothing roller 223 rotates, the smoothing scraper 225 is of a spiral structure, and the phenomenon that the smoothing scraper 225 scrapes towards two ends can occur, so that a smoothing effect on the surface of the polyurethane film is realized.
A tensioning cavity 200 is symmetrically formed in the front wall and the rear wall of the cooling frame body 20, a plurality of tensioning crankshafts 201 are arranged in the tensioning cavity 200, the installation positions of the adjacent tensioning crankshafts 201 are opposite, tensioning push rods 202 are slidably arranged below the tensioning crankshafts 201 and are connected with each other through tensioning connecting rods 203, tensioning motors 204 are arranged above the tensioning crankshafts 201 and are in transmission connection with each other through belts, tensioning slide rods 205 are symmetrically slidably arranged at two ends of the cooling long roller 26, the lower ends of the tensioning push rods 202 are connected with one ends of the tensioning slide rods 205 through tensioning support rods 206, one ends of the tensioning slide rods 205 are rotatably connected with one ends of the tensioning support rods 206 through hinges, the lower ends of the tensioning push rods 202 are rotatably connected with the other ends of the tensioning support rods 206 through hinges, and the cooling frame body 20 is connected;
during specific work, the rotation of the tensioning motor 204 can drive the tensioning crankshaft 201 to rotate through belt transmission, the tensioning crankshaft 201 can drive the tensioning push rod 202 to move up and down through the tensioning connecting rod 203, the tensioning push rod 202 moves up and down to enable the tensioning support rod 206 to rotate up and down by taking a spherical hinged position between the tensioning support rod and the cooling frame body 20 as an axis, so that the cooling long roller 26 is driven to move up and down in the cooling tank 11 through the tensioning slide rod 205, due to the fact that the installation positions of the adjacent tensioning crankshafts 201 are opposite, the cooling long roller 26 in the cooling tank 11 moves relatively, tensioning treatment on the polyurethane film within an elastic deformation range is achieved, the polyurethane film becomes thin after passing through the tensioning crankshaft, and heat inside the polyurethane film can be better dissipated.
A driving cavity 207 is arranged above the tensioning cavity 200 in the front wall and the rear wall of the cooling frame body 20, one end of each of two leveling rollers 223 positioned at the same position is connected with one end of a linkage shaft rod 209 through an L-shaped support rod 208, the two leveling rollers are meshed and connected through bevel gears, the linkage shaft rods 209 are of elastic telescopic structures, and the two linkage shaft rods 209 positioned in the same driving cavity 207 are connected through belt transmission; during specific work, one end of each of the two smoothing rollers 223 located at the same position is connected with one end of the corresponding linkage shaft rod 209 through the L-shaped supporting rod 208, the two ends of each of the two smoothing rollers 223 are connected through bevel gear meshing, the two linkage shaft rods 209 located in the same driving cavity 207 are connected through belt transmission, the two pairs of smoothing rollers 223 can move synchronously, and therefore in the process of moving the polyurethane film, the phenomenon that accumulated wrinkles appear on the surface of the polyurethane film due to the action of friction force cannot occur.
A driving motor 210 is arranged in the middle of the smoothing sliding plate 221, driving rollers 211 are symmetrically arranged at two ends of the smoothing sliding plate 221, the two driving rollers 211 located in the same driving cavity 207 are connected through a driving belt 212, one end of a linkage shaft rod 209 is connected with the driving rollers 211 through a driving shaft rod 213, one L-shaped supporting rod 208 located above the driving cavity 207 is provided with a positioning bump 214, the driving belt 212 is provided with a positioning pressing block 215, and the positioning bump 214 is in fit contact with the positioning pressing block 215;
when the driving motor 210 rotates, the driving roller 211 can be driven to rotate through belt transmission, so that the driving belt 212 is driven to move, the driving roller 211 can drive the linkage shaft rod 209 to rotate through the driving shaft rod 209, the smoothing roller 223 does not depend on the movement of the polyurethane film to move together with the movement of the polyurethane film, the surface of the film is better smoothed, the positioning pressing blocks 215 on the driving belt 212 can be contacted with the positioning bumps 214 at intervals, the two smoothing rollers 223 located at the same position are enabled to be close to each other to press the film, the film is prevented from moving in the cooling groove 11, the long cooling roller 26 can stretch and draw the film for multiple times, and the cooling effect of the polyurethane film is better.
The cooling long roller 26 is provided with a cooling cylinder 260, a plurality of vibration slideways are uniformly arranged in the cooling cylinder 260 along the length direction of the cooling cylinder, a plurality of vibration sliders 261 are uniformly arranged in the vibration slideways in a sliding manner along the circumferential direction of the vibration slideways, a plurality of left and right vibration support blocks 262 are uniformly arranged on the cooling long roller 26, the vibration sliders 261 are connected with the vibration support blocks 262 in a sliding manner, a vibration spring is connected between the vibration sliders and the vibration support blocks 262, a vibration cavity 263 is arranged in the cooling long roller 26, a vibration top block 264 is arranged between the adjacent vibration support blocks 262 in a sliding manner, a return spring is connected between the cooling long roller 26 and the vibration top block 264, vibration slide bars 265 are symmetrically installed at two ends in the vibration cavity 263 in a sliding mode, a plurality of vibration lugs 266 are evenly arranged on the vibration slide bars 265, one end of the vibration top block 264 is in fit contact with the vibration lugs 266, and the tensioning slide bar 205 is rotatably connected with one end of the vibration slide bars 265 through a hinge;
during specific work, when tensioning support rod 206 takes cooling long roller 26 to reciprocate, tensioning support rod 206 can drive vibration lug 266 through vibration slide bar 265 and slide in vibration cavity 263, thereby make vibration lug 266 and vibration kicking block 264 frequently contact, make vibration kicking block 264 frequent striking cooling cylinder 260 under reset spring's effect, thereby make between vibration slider 261 and the vibration kicking block 262 because under vibration spring's the effect, cooling cylinder 260 produces the vibration effect, thereby vibrate the polyurethane film, thereby accelerate the cooling efficiency of polyurethane film.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A polyurethane film preparation and forming method uses a polyurethane film preparation and forming device, and the polyurethane film preparation and forming device comprises a base (1) and a cooling device (2), and is characterized in that: the concrete method for preparing the polyurethane film by adopting the polyurethane film preparation forming equipment is as follows:
step one, preparation operation: debugging the polyurethane film preparation forming equipment;
step two, extruding and forming a polyurethane film: heating, melting and plasticizing the crystallized and dried polyurethane slices through an existing extruder, and then extruding the polyurethane slices through a die orifice of a machine head of the extruder to enable the molten material to cling to a calendering roller, and rolling and molding the molten material by the calendering roller;
step three, cooling and drying the polyurethane film: the polyurethane film rolled and formed in the second step passes through the cooling device (2) of the invention, then the cooling device (2) can cool the polyurethane film, so that the polyurethane film is completely formed, and the formed polyurethane film is dried by the existing drying equipment;
step four, rolling and packaging the polyurethane film: rolling the polyurethane film dried in the third step by using a rolling roller, and then packaging and warehousing;
the upper surface of the base (1) is provided with a cooling device (2); wherein:
the cooling device (2) comprises a cooling frame body (20), a front guide roller (21), a smoothing unit (22), a proper position chute (23), a proper position slide block (24), a proper position roller (25), a long cooling roller (26) and a rear guide roller (27), the upper surface of the base (1) is provided with the cooling frame body (20), a pre-cooling groove (10), a cooling groove (11), a pre-drying groove (12) and a cooling clapboard (13) are sequentially arranged in the cooling frame body (20) along the length direction from left to right, the cooling clapboard (13) is arranged between the cooling groove (11) and the pre-drying groove (12) and adjacent to the pre-cooling groove, the front guide roller (21) is arranged at the upper end of the left side of the pre-cooling groove (10), the smoothing unit (22) is symmetrically arranged at the upper end of the cooling clapboard (13) between the pre-cooling groove (10) and the cooling clapboard (13) between the cooling groove (11) and the pre-drying groove (12), the proper position chute (23), the adaptive sliding chute (23) is internally provided with an adaptive sliding block (24) in a sliding manner, an adaptive spring is connected between the adaptive sliding block and the adaptive sliding block, the adaptive sliding block (24) is provided with an adaptive roller (25), the bottoms of the front side and the rear side in the pre-cooling tank (10) and the bottoms of the front side and the rear side in the cooling tank (11) are symmetrically provided with water flow pipelines (14), the pre-drying tank (12) is internally provided with hot air blowers (15) in an up-and-down symmetrical manner, a plurality of long cooling rollers (26) are uniformly arranged in the cooling tank (11), the long cooling rollers (26) are arranged in an S shape, and the upper end of the right side of the;
the smoothing unit (22) comprises smoothing slideways (220), smoothing sliding plates (221), smoothing sliding blocks (222), smoothing rollers (223) and smoothing screws (224), the smoothing slideways (220) are symmetrically arranged at positions above cooling partition plates (13) between the pre-cooling grooves (10) and the cooling grooves (11) and positions above the cooling partition plates (13) between the cooling grooves (11) and the pre-drying grooves (12), the smoothing sliding plates (221) and the smoothing sliding blocks (222) are slidably mounted in the smoothing slideways (220), the smoothing sliding plates (221) are positioned above the smoothing sliding blocks (222) and are connected with supporting springs between the smoothing sliding blocks (222), the smoothing rollers (223) are arranged at the ends of the cooling partition plates (13) between the pre-cooling grooves (10) and the cooling grooves (11) and at the upper ends of the cooling partition plates (13) between the cooling grooves (11) and the pre-drying grooves (12), and the smoothing rollers (223) are arranged between the two smoothing sliding blocks (222) which are positioned at opposite positions on the front and back side walls in the cooling frame body (20), the upper end of the processing frame body is connected with the smoothing sliding plate (221) through a smoothing screw rod (224), and the processing frame body is connected with the smoothing screw rod (224) in a thread fit mode.
2. The method for preparing and molding the polyurethane film according to claim 1, wherein the method comprises the following steps: a tensioning cavity (200) is symmetrically formed in the front wall and the rear wall of the cooling frame body (20), a plurality of tensioning crankshafts (201) are arranged in the tensioning cavity (200), the installation positions of the adjacent tensioning crankshafts (201) are opposite, a tensioning push rod (202) is arranged below the tensioning crankshafts (201) in a sliding mode and is connected with the tensioning push rod through a tensioning connecting rod (203), a tensioning motor (204) is arranged above the tensioning crankshafts (201) and is connected with the tensioning motor (204) through a belt in a transmission mode, tensioning slide rods (205) are symmetrically arranged at two ends of a cooling long roller (26) in a sliding mode, the lower end of the tensioning push rod (202) is connected with one end of each tensioning slide rod (205) through a tensioning support rod (206), one end of each tensioning slide rod (205) is rotatably connected with one end of each tensioning support rod (206) through a hinge, the lower end, the cooling frame body (20) is connected with the tension support rod (206) in a ball-type hinged mode.
3. The method for preparing and molding the polyurethane film according to claim 1, wherein the method comprises the following steps: the two ends of the surface of the smoothing roller (223) are symmetrically provided with smoothing scrapers (225), and the smoothing scrapers (225) are of spiral structures.
4. The method for preparing and molding the polyurethane film according to claim 1, wherein the method comprises the following steps: a cooling cylinder (260) is arranged on the cooling long roller (26), a plurality of vibration slideways are uniformly arranged in the cooling cylinder (260) along the length direction of the cooling cylinder, a plurality of vibration sliding blocks (261) are uniformly arranged in the vibration slideways in a sliding manner along the circumferential direction of the vibration sliding blocks, a plurality of left vibration supporting blocks (262) and a plurality of right vibration supporting blocks (262) are uniformly arranged on the cooling long roller (26), the vibration sliding blocks (261) are connected with the vibration supporting blocks (262) in a sliding manner, vibration springs are connected between the vibration sliding blocks and the vibration supporting blocks, a vibration cavity (263) is formed in the cooling long roller (26), a vibration ejecting block (264) is arranged between the adjacent vibration supporting blocks (262) in a sliding manner, a reset spring is connected between the cooling long roller (26) and the vibration ejecting block (264), vibration sliding rods (265) are symmetrically and slidably arranged at two ends in the vibration cavity (263), a plurality of vibration protruding blocks (266) are uniformly, the tensioning sliding rod (205) is rotatably connected with one end of the vibration sliding rod (265) through a hinge.
5. The method for preparing and molding the polyurethane film according to claim 2, wherein: the stretching cavity (200) top in the wall is provided with drive cavity (207) around cooling frame (20), and the one end that lies in two smoothing rollers (223) of same department is connected and is connected through bevel gear meshing between the two through the one end of L type branch (208) with interlock axostylus axostyle (209), interlock axostylus axostyle (209) are elastic telescopic structure, are located and are connected through the belt drive between two interlock axostylus axostyles (209) in same drive cavity (207).
6. The method for preparing and molding the polyurethane film according to claim 5, wherein: the improved automatic leveling device is characterized in that a driving motor (210) is arranged in the middle of a leveling sliding plate (221), driving rollers (211) are symmetrically arranged at two ends of the leveling sliding plate (221), the two driving rollers (211) located in the same driving cavity (207) are connected through a driving belt (212), one end of a linkage shaft rod (209) is connected with the driving rollers (211) through a driving shaft rod (213), a positioning bump (214) is arranged on one L-shaped supporting rod (208) located above the driving cavity (207), a positioning pressing block (215) is arranged on the driving belt (212), and the positioning bump (214) is in matched contact with the positioning pressing block (215).
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