CN219405085U - Five-roller casting machine for photovoltaic cell packaging film - Google Patents

Abstract

The utility model discloses a photovoltaic cell packaging film five-roller casting machine which comprises a frame, wherein a first cooling steel roller and a second cooling steel roller form a pair of cooling calendaring rollers, and a third cooling steel roller and a third cooling rubber roller form another pair of cooling calendaring rollers; the rotation axes of the first cooling steel roller and the second cooling steel roller are positioned on a horizontal plane, the rotation axes of the third cooling steel roller and the cooling rubber roller are positioned on an inclined plane, and the inclination angle alpha of the inclined plane is 40-50 degrees; the steel roller inner cylinder and the steel roller outer cylinder of the first cooling steel roller, the second cooling steel roller and the third cooling steel roller are mutually sleeved at intervals to form a steel roller cooling water cavity; the rubber roller inner cylinder and the rubber roller outer cylinder of the cooling rubber roller are mutually sleeved at intervals to form a rubber roller cooling water cavity, and the outer cylinder wall of the rubber roller outer cylinder is coated with a rubber roller coating layer; the frame is supported on a travelling mechanism through a lifting mechanism, and the travelling mechanism is movably supported on a moving rail. The five-roll casting machine can effectively improve the running efficiency of the casting machine and the quality of the casting film.

Description

Five-roller casting machine for photovoltaic cell packaging film

Technical Field

The utility model relates to solar photovoltaic cell packaging film production equipment, in particular to a solar photovoltaic cell silicon wafer EVA packaging film casting machine with five cooling casting rollers.

Background

Film thickness uniformity and film surface embossing uniformity of EVA films for solar photovoltaic modules are two extremely important indexes for detecting film product quality. The uneven thickness of the film not only affects the tensile strength and the barrier property of the film everywhere, but also causes permanent deformation such as bursting of the film surface, and the uneven EVA packaging film such as bursting and wrinkling can seriously affect the power generation efficiency of the photovoltaic cell. The uniformity of the embossing on the surface of the EVA packaging film directly influences whether the battery piece can be completely exhausted or not when the EVA film is stuck, and then the adsorption force and the adhesion uniformity of the film are influenced, so that the EVA film is required to have uniform thickness, and the embossing on the film surface is required to be uniform and clear.

The applicant applies for a high-precision temperature control film casting machine in 2021, 7 and 12 days and is authorized to invent patent numbers: 202110783485.6 the extruded film of the film extrusion die of the utility model firstly enters a pair of rubber rollers and steel pattern rollers, and then passes through a frosting roller and a cooling roller to finish EVA film casting molding. The utility model adopts the opposite rolling structure of the rubber roller and the steel pattern roller to realize the pressing of the film embossing, but the temperature of the molten film just from the extrusion die is relatively higher, the heat conduction performance of the rubber roller is poorer, the extruded film is difficult to cool down rapidly, the adhesive roller and the winding roller are easy to form on the rubber roller, the thickness uniformity of the extruded film is difficult to control, the embossing is difficult to shape at relatively high temperature, uneven and unclear film embossing is generated, and therefore, the rotating speed of the rubber roller and the steel pattern roller pair can only be reduced to ensure the extrusion molding quality of the film, thereby restricting the production efficiency of the casting machine.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a photovoltaic cell packaging film five-roller casting machine capable of effectively improving the running efficiency and the casting film quality of the casting machine.

In order to solve the technical problems, the five-roller casting machine for the photovoltaic cell packaging film comprises a frame, wherein a first cooling steel roller, a second cooling steel roller, a third cooling steel roller, a cooling rubber roller and a guide cooling roller are sequentially rotatably supported on the frame along a casting path, the first cooling steel roller and the second cooling steel roller form a cooling calendaring roller pair, and the third cooling steel roller and the cooling rubber roller form another cooling calendaring roller pair; the rotation axes of the first cooling steel roller and the second cooling steel roller are positioned on a horizontal plane, the rotation axes of the third cooling steel roller and the cooling rubber roller are positioned on an inclined plane, and the inclination angle alpha of the inclined plane is 40-50 degrees; the steel roller inner cylinder and the steel roller outer cylinder of the first cooling steel roller, the second cooling steel roller and the third cooling steel roller are mutually sleeved at intervals to form a steel roller cooling water cavity; the rubber roller inner cylinder and the rubber roller outer cylinder of the cooling rubber roller are mutually sleeved at intervals to form a rubber roller cooling water cavity, and the outer cylinder wall of the rubber roller outer cylinder is coated with a rubber roller coating layer; the frame is supported on a travelling mechanism through a lifting mechanism, and the travelling mechanism is movably supported on a moving rail.

In the structure, the molten film cast from the extrusion die firstly passes through the cooling rolling pair formed by the first cooling steel roller and the second cooling steel roller, and then passes through the cooling rolling pair formed by the third cooling steel roller and the cooling rubber roller, so that the steel roller rolling pair formed by the first cooling steel roller and the second cooling steel roller has better heat conduction performance, the cooling shaping of the molten cast film can be realized, the shaping thickness of the film can be effectively controlled, the uniformity of film thickness is ensured, and the phenomenon of wrinkling and bursting of the molten cast film is avoided. The third cooling steel roller and the third cooling rubber roller carry out pattern pressing and final shaping on the rolled film which is subjected to preliminary cooling shaping and film temperature maintaining, and the structure of cooling shaping and embossing firstly can greatly improve the running efficiency of the casting machine, improve the rotating speed of the casting roller and ensure uniform film thickness embossing. The rotating axes of the cooling steel roller III and the cooling rubber roller are positioned on the inclined plane with the inclination angle of 40-50 degrees, the cooling rubber roller presses the cooling steel roller III by gravity, so that fluctuation of rolling force of the counter rolling roller is well overcome, the rolling force is more stable, the pattern pressing is clearer and more uniform, meanwhile, the cylinder is used for pressing, the pressure is stable, the pressure is convenient to control, the film thickness can be stabilized, and the embossing quality can be ensured. The casting machine frame is supported on the travelling mechanism through the lifting mechanism, the height of the casting machine can be adjusted through the structure, the distance from the extrusion die to the casting roller pair can be adjusted according to the thickness of the molten film, the length of the air cooling path of the molten film is adjusted, and the whole casting machine can be moved out of the working position by virtue of the travelling mechanism, so that the extrusion die and the casting roller can be replaced and maintained.

In a preferred embodiment of the present utility model, the inclination angle α=45° of the inclined plane where the axes of rotation of the cooling steel roller three and the cooling rubber roller are located. Has more stable rolling pressure of the double-roller.

In a further embodiment of the utility model, the cooling steel roller is rotatably supported on a steel roller support, the steel roller support is slidably supported on a steel roller seat sliding rail, and the steel roller seat sliding rail is fixedly arranged on the frame; the second cooling steel roller is rotatably supported on a second steel roller support, and the second steel roller support is fixedly arranged on the frame. The steel roller pressing cylinder is fixedly arranged on the frame and is propped against a support of the steel roller; and a roll gap regulator and a roll gap calibrator are arranged between the first steel roll support and the second steel roll support. The rolling force of the casting roller pair can be accurately controlled, and the casting film thickness and uniformity of the two casting steel rollers can be accurately regulated and controlled.

According to the preferred embodiment of the utility model, the steel roller inner cylinder helical blade and the steel roller outer cylinder helical blade are arranged in the steel roller cooling water cavity, and the steel roller inner cylinder helical blade and the steel roller outer cylinder helical blade are helical blades with the same rotation direction and screw pitch. The structure prolongs the heat exchange path and improves the heat exchange efficiency of the casting roller.

In a further embodiment of the utility model, the cooling rubber roll is rotatably supported on a rubber roll support, the rubber roll support is slidably supported on a rubber roll seat sliding rail, and the rubber roll seat sliding rail is fixedly arranged on the frame; the cooling steel roller III is rotatably supported on a steel roller III support, and the steel roller III support is fixedly arranged on the frame. The frame is fixedly provided with a rubber roller pressing cylinder, and the rubber roller pressing cylinder is propped against the rubber roller support; and a roll gap regulator and a roll gap calibrator are arranged between the rubber roll support and the steel roll support. Not only can the counter-roll casting pressure of the casting rolls be accurately controlled, but also the casting film thickness and uniformity of the two casting steel roll pairs can be accurately adjusted and controlled.

In the preferred embodiment of the utility model, the rubber roller inner cylinder helical blade and the rubber roller outer cylinder helical blade are arranged in the rubber roller cooling water cavity, and the rubber roller inner cylinder helical blade and the rubber roller outer cylinder helical blade are helical blades with the same rotation direction and screw pitch. The structure prolongs the heat exchange path and improves the heat exchange efficiency of the casting roller.

According to the preferred embodiment of the utility model, the rubber roller outer cylinder is coated with the rubber roller coating layer (the rubber roller coating layer on the rubber roller coating layer is formed by coating heat-conducting silica gel, and the rubber layer thickness L=3 mm-5 mm. The rubber coating layer can form good high-performance elasticity, ensure uniform and clear embossed patterns on the surface of the film and has good heat-conducting property.

Drawings

The five-roll casting machine for the photovoltaic cell packaging film is further described in detail below with reference to the accompanying drawings and the detailed description.

FIG. 1 is a perspective view of one embodiment of a five roll casting machine for photovoltaic cell packaging films of the present utility model;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a schematic view of the configuration of the roll gap adjuster in the embodiment of FIG. 1;

FIG. 4 is a left side view of FIG. 3;

FIG. 5 is a schematic perspective view of the lifting mechanism in the embodiment shown in FIG. 1;

FIG. 6 is a front view of FIG. 5;

FIG. 7 is a schematic view of the travel mechanism of the embodiment of FIG. 1;

FIG. 8 is a top view of FIG. 7;

FIG. 9 is a schematic cross-sectional view of a chilled steel roll in the embodiment of FIG. 1;

FIG. 10 is an enlarged schematic view of the portion I of FIG. 9;

FIG. 11 is a schematic cross-sectional view of the cooling rubber roller in the embodiment shown in FIG. 1;

fig. 12 is an enlarged view of the structure of the portion ii in fig. 11.

In the figure, a 1-moving track, a 2-rack, a 3-travelling mechanism, a 4-lifting mechanism, a 5-guiding cooling roller, a 7-cooling steel roller II, a 8-cooling steel roller I, a 9-heating lamp, a 10-cooling steel roller III, a 11-glue roller pressing cylinder, a 12-glue roller seat slide rail, a 13-glue roller support, a 14-roller spacing calibrator, a 15-roller spacing regulator, a 16-steel roller three support, a 17-steel roller two support, a 18-steel roller one support, a 19-steel roller pressing cylinder, a 20-steel roller seat slide rail and a 21-support body; 151-a distance adjusting handle, 152-a distance adjusting speed reducer, 153-a distance adjusting ejector rod, 154-a guide key; 401-lifting ejector rod, 402-lifting transmission, 403-lifting coupling, 404-lifting shaft and 405-lifting motor; 301-travelling wheels, 302-travelling speed change devices, 303-travelling motors, 304-travelling wheel frames, 305-travelling couplings and 306-travelling wheel shafts; 801-steel roller inner cylinder, 802-steel roller inner cylinder helical blade, 803-steel roller outer cylinder helical blade, 804-steel roller outer cylinder, 805-steel roller cooling water cavity, 806-steel roller end cover water hole, 807-steel roller end cover, 808-steel roller end shaft, 809-steel roller bearing, 810-steel roller end shaft water hole, 811-steel roller rib plate; 601-inner rubber roll cylinder, 602-inner rubber roll cylinder helical blade, 603-outer rubber roll cylinder helical blade, 604-outer rubber roll cylinder, 605-rubber roll cooling water cavity, 606-rubber roll end cover water hole, 607-rubber roll end cover, 608-rubber roll end shaft, 609-rubber roll bearing, 610-rubber roll end shaft water hole, 611-rubber roll cover glue layer, 612-rubber roll rib plate.

Detailed Description

As shown in fig. 1 and 2, a frame 2 of the casting machine adopts a frame structure, and the frame comprises frame side plates at two sides, and the frame side plates at two sides are fixedly connected into a frame type frame through connecting supporting rods. Lifting mechanisms 4 are supported at bottoms of the front end and the rear end of the side plate of the frame 2, the lifting mechanisms 4 are supported and installed on the travelling mechanisms 3 at the corresponding bottom ends, the travelling mechanisms 3 are in rolling support with the corresponding moving rails 1 through travelling wheels 301, and the moving rails 1 are I-shaped rail steel. The lifting mechanism 4 can vertically lift or lower the frame 2 through the lifting motor 405 thereof; the travelling mechanism 3 can drive the frame 2 to move back and forth along the moving track 1 through the lifting mechanism 4.

A first cooling steel roller 8, a second cooling steel roller 7, a third cooling steel roller 10 and a guiding cooling roller 5 are rotatably supported on the frame 2, and the first cooling steel roller 8, the second cooling steel roller 7, the third cooling steel roller 1 and the guiding cooling roller 5 are sequentially arranged from front to back along a casting path of the casting film. The first cooling steel roller 8, the second cooling steel roller 7 and the third cooling steel roller 10 are respectively rotatably supported at the tops of the side plates at the two sides of the frame 2 through corresponding rotation supports at the two ends of the first cooling steel roller, and the two ends of the guiding cooling roller 5 are rotatably supported on the side plate bodies at the two sides of the frame 2. The first cooling steel roller 8, the second cooling steel roller 7, the third cooling steel roller 10, the cooling rubber roller 6 and the guiding cooling roller 5 form a five-roller casting machine, the first cooling steel roller 8, the second cooling steel roller 7, and two ends of the third cooling steel roller 10, the cooling rubber roller 6 and the guiding cooling roller 5 are respectively communicated with a cooling water inlet pipe and a cooling water outlet pipe so as to introduce cooling water into the rollers to take away the melting heat of the casting film.

The two ends of the first cooling steel roller 8 are respectively rotatably supported on first steel roller supports 18 at corresponding ends, the bottoms of the first two steel roller supports 18 are supported on steel roller seat sliding rails 20, the steel roller seat sliding rails 20 adopt linear sliding rails of standard parts, and the steel roller seat sliding rails 20 are fixedly arranged at the tops of side plates at corresponding sides of the frame 2. Two ends of the second cooling steel roller 7 are respectively rotatably supported on second steel roller supports 17 at corresponding ends, and the second steel roller supports 17 are fixedly arranged at the tops of corresponding side plates of the frame 2. The first cooling steel roller 8 and the second cooling steel roller 7 roll oppositely to form a pair of cooling calendaring rollers, the casting extrusion die is positioned at the common tangent position of the first cooling steel roller 8 and the second cooling steel roller 7, and the die is positioned above the corresponding two rollers. The rotation axes of the first cooling steel roller 8 and the second cooling steel roller 7 are positioned on a horizontal plane.

A steel roller pressing cylinder 19 is arranged at the top of the front end side plates of the two side plates of the frame 2, and the cylinder body of the steel roller pressing cylinder 19 is hinged on a corresponding hinged support which is fixedly arranged on the side plate of the frame 2; the piston rods of the two steel roller pressing cylinders 19 are respectively propped against the steel roller support 18 on the corresponding side, a heating lamp 9 is further arranged at the top of the steel roller support 18, the heating lamp 9 is an infrared heating lamp, and the heating lamp 9 is positioned on the side face of the material film of the extrusion path.

A roll gap adjuster 15 and a roll gap calibrator 14 are also installed between the first steel roll support 18 and the second steel roll support 17. The handle of the roll gap regulator 15 is rocked to regulate and control the casting distance between the first cooling steel roll 8 and the second cooling steel roll 7 so as to regulate different casting film thicknesses. The roll gap calibrator 14 mainly comprises a dial gauge for measuring the gap between cooled steel rolls, wherein a dial gauge seat is fixedly arranged on a first steel roll support 18, and a gauge head of the dial gauge is abutted against a second steel roll support 17.

The two ends of the cooling steel roller III 10 are respectively rotatably supported on the steel roller three supports 16 at the corresponding ends, the two steel roller three supports 16 are fixedly mounted at the tops of the corresponding side plates of the frame 2, the two ends of the cooling rubber roller 6 are respectively rotatably supported on the rubber roller supports 13 at the corresponding ends, the bottoms of the rubber roller supports 13 are supported on the rubber roller seat slide rails 12, the rubber roller seat slide rails 12 adopt linear sliding guide rails, and the rubber roller seat slide rails 12 are fixedly mounted at the positions of the tops of the side plates at the corresponding sides of the frame 2. The third cooling steel roller 10 and the cooling rubber roller 6 roll to form another cooling calendaring roller pair, and the axes of rotation of the third cooling steel roller 10 and the cooling rubber roller 6 are positioned on an inclined plane relative to the horizontal plane. The inclination angle α of the inclined plane=45°, preferably the inclination angle α of the inclined plane is preferably between 40 ° and 50 °.

A rubber roll pressing cylinder 11 is arranged at the top of the rear end side plates of the two side plates of the frame 2, and the cylinder body of the rubber roll pressing cylinder 11 is hinged on a corresponding hinged support which is fixedly arranged on the side plate of the frame 2; the piston rods of the two rubber roll pressing cylinders 11 are respectively propped against the rubber roll supports 13 at the corresponding sides, the pressing direction of the piston rods of the rubber roll pressing cylinders 11 is also positioned on the inclined surfaces of the cooling steel roll III 10 and the rotating axial lead of the cooling rubber roll 6, and the cooling rubber roll 6 is pressed against the cooling steel roll III 10 under the action of gravity component force and cylinder force so as to avoid fluctuation of rolling force and keep the pressing quality of film surface embossing.

A roll gap adjuster 15 and a roll gap calibrator 14 are also arranged between the cooling steel roller III 10 and the cooling rubber roller 6, and the roll gap adjuster 15 and the roll gap calibrator 14 have the same structure as the roll gap adjuster 15 and the roll gap calibrator 14 between the cooling steel roller I8 and the cooling steel roller II 7. The roll gap regulator 15 is fixedly arranged at the top end of the corresponding side plate of the frame 2 through a bracket 21. The roll gap calibrator 14 also comprises a dial indicator for measuring the distance between the cooling steel roll III 10 and the cooling rubber roll 6, wherein a dial indicator seat is fixedly arranged on the bracket 21, and the head of the dial indicator is abutted against the rubber roll support 13.

As shown in fig. 3 and 4, the roll gap adjuster 15 includes an adjusting reducer 152, the adjusting reducer 152 is a worm gear reducer, the outer end of the worm is fixedly provided with a distance adjusting handle 151, a worm wheel is rotatably supported on a worm gear base, a distance adjusting push rod 153 is installed at the axis position of the worm wheel through a threaded screw pair, and the distance adjusting push rod 152 is telescopically and slidably supported on the worm gear base through a guide key 154. The worm is driven to rotate by rotating the worm through the distance adjusting handle 151, and the worm wheel drives the distance adjusting push rod 153 through the thread pair, so that the distance between two pairs of rolling rollers is adjusted.

As shown in fig. 5 and 6, the lifting mechanism 4 comprises a lifting shaft 404, two ends of the lifting shaft 404 are connected with a lifting speed changer 402 through a lifting coupling 403, the lifting speed changer 402 is also a worm gear reducer, the lifting coupling 403 adopts a flange coupling, a lifting ejector rod 401 is telescopically and slidably supported on the lifting speed changer 402, a lifting motor 405 for driving the lifting speed changer 402 is mounted on the lifting speed changer 402 at one end of the lifting shaft 404, and the lifting speed changer 402 comprises a worm gear transmission pair and a screw transmission pair.

As shown in fig. 7 and 8, the traveling mechanism 3 includes a traveling wheel shaft 306, traveling wheels 301 are connected to both ends of the traveling wheel shaft 306 via traveling couplings 305, the traveling wheels 301 are rotatably supported on traveling wheel frames 304, a traveling transmission 302 is mounted on one traveling wheel frame 304, the traveling transmission 302 is driven by a traveling motor 303, and the traveling transmission 302 is also a worm gear reducer.

The roll gap adjuster 15, the lifting transmission 402 and the traveling transmission 302 are all special driving devices commonly used in the market, such as those manufactured by the coast reduction machinery company, inc.

The steel roll structure was cooled as shown in fig. 9 and 10. In this embodiment, the first cooling steel roller 8, the second cooling steel roller 7, the third cooling steel roller 10 and the guiding cooling roller 5 adopt the same structural type, but the outer diameter of the roller of the guiding cooling roller 5 is smaller than that of the first cooling steel roller 8, the second cooling steel roller 7 and the third cooling steel roller 10. The first cooling steel roller 8, the second cooling steel roller 7, the third cooling steel roller 10 and the guiding cooling roller 5 comprise corresponding steel roller inner cylinders 801 and steel roller outer cylinders 804, the steel roller outer cylinders 804 are sleeved outside the steel roller inner cylinders 801 at intervals, the steel roller outer cylinders 804 and the steel roller inner cylinders 801 are carbon steel cylinders, and cylinder wall embossing is arranged on the outer cylinder wall of the steel roller outer cylinders 804. Corresponding steel roller end caps 807 are fixedly welded at the two ends of the steel roller inner cylinder 801 and the steel roller outer cylinder 804, and the steel roller inner cylinder 801, the steel roller outer cylinder 804 and the steel roller end caps 807 at the two ends enclose a steel roller cooling water cavity 805. The steel roll end caps 807 at both ends are fixedly provided with overhanging steel roll end shafts 808, the steel roll end shafts 808 at both ends are positioned on the axis of the steel roll outer cylinder 804, and the inner cylinder wall of the steel roll inner cylinder 801 is fixedly provided with two steel roll rib plates 811. The steel roller end shaft can also adopt a through shaft structure.

A plurality of uniformly distributed steel roller end cover water holes 806 are formed in the steel roller end covers 807 at the two ends in the radial direction, steel roller end shaft water holes 810 are further formed in the shaft center positions of the steel roller end shafts 808 at the two ends, steel roller bearings 809 are mounted on the steel roller end shafts 808 at the two ends, and the steel roller end shafts 808 are rotatably mounted on corresponding steel roller supports through the steel roller bearings 809. Cooling water flows into the steel roller cooling water cavity 805 from the steel roller end shaft water hole 810 on one end steel roller end shaft 808 through the steel roller end cover water hole 806 on the corresponding end steel roller end cover 807, and cooling water of the steel roller cooling water cavity 805 flows out through the steel roller end cover water hole 806 and the steel roller end shaft water hole 810 on the other steel roller end cover 807.

The steel roller cooling water cavity 805 is also provided with a steel roller inner cylinder helical blade 802 and a steel roller outer cylinder helical blade 803 in a staggered manner, and the steel roller inner cylinder helical blade 802 and the steel roller outer cylinder helical blade 803 have the same rotation direction and pitch. The steel roller inner cylinder helical blade 802 is fixedly arranged on the outer cylinder wall of the steel roller inner cylinder 801, and a certain helical blade endplay is kept between the steel roller inner cylinder helical blade 802 and the inner cylinder wall of the steel roller outer cylinder 804. The steel roller outer cylinder spiral blade 803 is fixedly arranged on the inner cylinder wall of the steel roller outer cylinder 804, and a certain spiral blade endplay is also kept between the steel roller outer cylinder spiral blade 803 and the outer cylinder wall of the steel roller inner cylinder 801. To form a fluctuating flow of water both circumferentially and radially.

As shown in fig. 11 and 12, the cooling rubber roll 6 comprises a corresponding rubber roll inner cylinder 601 and a rubber roll outer cylinder 604, the rubber roll outer cylinder 604 is sleeved outside the rubber roll inner cylinder 601 at intervals, the rubber roll outer cylinder 604 and the rubber roll inner cylinder 601 are both carbon steel cylinders, and cylinder wall embossing is arranged on the outer cylinder wall of the rubber roll outer cylinder 604. Corresponding rubber roll end covers 607 are fixedly welded at the two ends of the rubber roll inner cylinder 601 and the rubber roll outer cylinder 604, and the rubber roll inner cylinder 601, the rubber roll outer cylinder 604 and the rubber roll end covers 607 at the two ends enclose a rubber roll cooling water cavity 605. The rubber roller end covers 607 at the two ends are fixedly provided with rubber roller end shafts 608 which extend outwards, the rubber roller end shafts 608 at the two ends are positioned on the axis of the rubber roller outer cylinder 604, and the inner cylinder wall of the rubber roller inner cylinder 601 is fixedly provided with two rubber roller rib plates 612. The rubber roller end shaft can also adopt a through shaft structure.

A plurality of uniformly distributed rubber roll end cover water holes 606 are formed in the rubber roll end covers 607 at the two ends in the radial direction, rubber roll end shaft water holes 610 are further formed in the shaft center positions of the rubber roll end shafts 608 at the two ends, rubber roll bearings 609 are arranged on the rubber roll end shafts 608 at the two ends, and the rubber roll end shafts 608 are rotatably arranged on corresponding rubber roll supports through the rubber roll bearings 609. Cooling water flows into the rubber roller cooling water cavity 605 from the rubber roller end shaft water hole 610 on one rubber roller end shaft 608 through the rubber roller end cover water hole 606 on the rubber roller end cover 607 of the corresponding end, and cooling water of the rubber roller cooling water cavity 605 flows out from the rubber roller end shaft water hole 610 and the rubber roller end cover water hole 606 on the other rubber roller end cover 607.

The rubber roller cooling water cavity 605 is also provided with rubber roller inner cylinder helical blades 602 and rubber roller outer cylinder helical blades 603 in a staggered manner, and the rubber roller inner cylinder helical blades 602 and the rubber roller outer cylinder helical blades 603 have the same rotation direction and pitch. The rubber roller inner cylinder helical blade 602 is fixedly mounted on the outer cylinder wall of the rubber roller inner cylinder 601, and a certain helical blade endplay is kept between the rubber roller inner cylinder helical blade 602 and the inner cylinder wall of the rubber roller outer cylinder 604. The outer cylinder spiral blade 603 of the rubber roller is fixedly arranged on the inner cylinder wall of the outer cylinder 604 of the rubber roller, and a certain end gap of the spiral blade is also kept between the outer cylinder spiral blade 603 of the rubber roller and the outer cylinder wall of the inner cylinder 601 of the rubber roller. To form a fluctuating flow of water both circumferentially and radially.

The difference from the cooling steel roller structure is that the outer wall of the outer cylinder 604 of the rubber roller is coated with a rubber roller coating layer 611, the rubber roller coating layer 11 is formed by coating heat-conducting silica gel, the thickness L of the rubber roller coating layer 611 is 5mm, and preferably the thickness L of the rubber roller coating layer is controlled between 4mm and 6mm, so that the rubber roller coating layer 611 keeps proper elasticity, and has good elasticity and heat-conducting property.

Claims (9)

1. The utility model provides a five roller casting machine of photovoltaic cell packaging film, includes frame (2), its characterized in that: the first cooling steel roller (8) and the second cooling steel roller (7), the third cooling steel roller (10), the cooling rubber roller (6) and the guiding cooling roller (5) are sequentially rotatably supported on the frame (2) along a casting path, the first cooling steel roller (8) and the second cooling steel roller (7) form a cooling calendaring roller pair, and the third cooling steel roller (10) and the cooling rubber roller (6) form another cooling calendaring roller pair; the rotation axes of the first cooling steel roller (8) and the second cooling steel roller (7) are positioned on a horizontal plane, the rotation axes of the third cooling steel roller (10) and the cooling rubber roller (6) are positioned on an inclined plane, and the inclination angle alpha of the inclined plane is 40-50 degrees; the first cooling steel roller (8), the second cooling steel roller (7) and the third cooling steel roller (10) are mutually sleeved with the inner steel roller cylinder (801) and the outer steel roller cylinder (804) at intervals to form a steel roller cooling water cavity (805); the rubber roller inner cylinder (601) and the rubber roller outer cylinder (604) of the cooling rubber roller (6) are mutually sleeved at intervals to form a rubber roller cooling water cavity (605), and the outer cylinder wall of the rubber roller outer cylinder (604) is coated with a rubber roller coating layer (611); the frame (2) is supported on the travelling mechanism (3) through the lifting mechanism (4), and the travelling mechanism (3) is movably supported on the moving track (1).

2. The photovoltaic cell packaging film five roll casting machine of claim 1, wherein: and the inclination angle alpha=45° of the inclined plane where the rotation axes of the cooling steel roller III (10) and the cooling rubber roller (6) are positioned.

3. The photovoltaic cell packaging film five roll casting machine of claim 1, wherein: the first cooling steel roller (8) is rotatably supported on a first steel roller support (18), the first steel roller support (18) is slidably supported on a steel roller seat sliding rail (20), and the steel roller seat sliding rail (20) is fixedly arranged on the frame (2); the cooling steel roller II (7) is rotatably supported on a steel roller II support (17), and the steel roller II support (17) is fixedly arranged on the frame (2).

4. A photovoltaic cell encapsulation film five roll casting machine according to claim 3, characterized in that: a steel roller pressing cylinder (19) is fixedly arranged on the frame (2), and the steel roller pressing cylinder (19) is propped against a support (18) of the steel roller; a roll gap regulator (15) and a roll gap calibrator (14) are arranged between the first steel roll support (18) and the second steel roll support (17).

5. The photovoltaic cell packaging film five roll casting machine of claim 1, wherein: the steel roller cooling water cavity (805) is internally provided with a steel roller inner cylinder helical blade (802) and a steel roller outer cylinder helical blade (803), and the steel roller inner cylinder helical blade (802) and the steel roller outer cylinder helical blade (803) are helical blades with the same rotation direction and screw pitch.

6. The photovoltaic cell packaging film five roll casting machine of claim 1, wherein: the cooling rubber roller (6) is rotatably supported on a rubber roller support (13), the rubber roller support (13) is slidably supported on a rubber roller seat sliding rail (12), and the rubber roller seat sliding rail (12) is fixedly arranged on the frame (2); the cooling steel roller III (10) is rotatably supported on a steel roller III support (16), and the steel roller III support (16) is fixedly arranged on the frame (2).

7. The photovoltaic cell packaging film five roll casting machine of claim 6, wherein: the frame (2) is fixedly provided with a rubber roller pressing cylinder (11), and the rubber roller pressing cylinder (11) is propped against the rubber roller support (13); a roll gap regulator (15) and a roll gap calibrator (14) are arranged between the rubber roll support (13) and the steel roll three support (16).

8. The photovoltaic cell packaging film five roll casting machine of claim 1, wherein: the rubber roller cooling water cavity (605) is internally provided with a rubber roller inner cylinder helical blade (602) and a rubber roller outer cylinder helical blade (603), and the rubber roller inner cylinder helical blade (602) and the rubber roller outer cylinder helical blade (603) are helical blades with the same rotation direction and screw pitch.

9. The photovoltaic cell packaging film five roll casting machine of claim 1, wherein: the rubber covered layer (611) of the rubber covered roller outer cylinder (604) is formed by coating heat-conducting silica gel, and the thickness L=3 mm-5 mm of the rubber covered layer (611) of the rubber covered roller.