CN116714151B - Cooling device for polyethylene heat-shrinkable film - Google Patents
Cooling device for polyethylene heat-shrinkable film Download PDFInfo
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- CN116714151B CN116714151B CN202310704307.9A CN202310704307A CN116714151B CN 116714151 B CN116714151 B CN 116714151B CN 202310704307 A CN202310704307 A CN 202310704307A CN 116714151 B CN116714151 B CN 116714151B
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- 239000004698 Polyethylene Substances 0.000 title claims abstract description 47
- -1 polyethylene Polymers 0.000 title claims abstract description 47
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 47
- 229920006257 Heat-shrinkable film Polymers 0.000 title claims abstract description 38
- 238000001816 cooling Methods 0.000 title claims abstract description 23
- 238000007664 blowing Methods 0.000 claims abstract description 10
- 230000006835 compression Effects 0.000 claims description 25
- 238000007906 compression Methods 0.000 claims description 25
- 210000004907 gland Anatomy 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 4
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- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 4
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 4
- 241001330002 Bambuseae Species 0.000 abstract description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 4
- 239000011425 bamboo Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 238000010137 moulding (plastic) Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 229920006300 shrink film Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a cooling device for a polyethylene heat-shrinkable film, which relates to a plastic molding device, and comprises an air ring main body, wherein a supporting disc is fixedly arranged on the outer side of the air ring main body, a plurality of stand columns are fixedly arranged on the supporting disc, a rotary cylinder with an opening at the top is rotatably arranged above the supporting disc, and the rotary cylinder is positioned among the stand columns; the inside wall fixed mounting of rotatory section of thick bamboo has the blade of vertical setting, and rotatory section of thick bamboo covers polyethylene heat shrinkage film inside, and the axial fan blade is installed to rotatory section of thick bamboo's top opening part. When the axial flow fan blades and the blades are synchronously moved by the rotating cylinder, wind in the rotating cylinder can spirally upwards flow along the outer side of the polyethylene heat shrinkage film, and when the blades and the axial flow fan blades rotate together, the spiral upwards wind is formed and is discharged from the top of the rotating cylinder, and an independent air suction type air inlet mode is adopted, so that the wind is more stable in the flowing process, and the shaking of the polyethylene heat shrinkage film caused by gas expansion caused by passive blowing can not occur.
Description
Technical Field
The invention relates to a plastic molding device, in particular to a cooling device for a polyethylene heat-shrinkable film.
Background
Polyethylene heat-shrinkable film is widely used for packaging beverages, mineral water and cloth, and has the characteristics of good flexibility, tear resistance, impact resistance, difficult breakage, moisture resistance, large shrinkage rate and the like
When the polyethylene heat-shrinkable film is manufactured, plastic particles are melted and plasticized by an extruder, then the plastic particles are subjected to base, the blowing proportion of the blown film is controlled on a die head, and the polyethylene heat-shrinkable film is cooled on cooling equipment.
When the polyethylene heat-shrinkable film is cooled, the cooling air ring is adopted for blowing and cooling, the air ring is in a circular structure and comprises an air inlet, an air exchange main body, a rotating body, an upper lip (air outlet), a lower lip (air outlet) and the like, and the cooling air flow required by the polyethylene heat-shrinkable film is required to be 360-degree annular air flow because the section of the film bubble is circular. Because the strength of the film bubble is low when the film bubble is not cooled, the air flow and the film bubble must have a certain angle, the air flow direction cannot be vertical to the longitudinal direction of the film bubble, otherwise the film bubble can shake and deform to influence molding due to overlarge stress, the wind in the existing wind ring is high-speed unidirectional air flow directly blown out of the fan, a passive blowing type air inlet mode is adopted, after the wind is blown out of the wind ring, the air does not have the resistance of the side wall of the air inlet due to the expansibility of the air, the air expands outwards, the flowing surface slightly increases, and the surrounding air is driven to flow, so that the shaking condition is caused on the polyethylene heat shrinkage film.
Disclosure of Invention
The invention aims to provide a cooling device for a polyethylene heat-shrinkable film, which is used for solving the problems in the background art.
In order to solve the technical problems, the invention provides the following technical scheme: a cooling device for a polyethylene heat-shrinkable film comprises a wind ring main body, a cooling device and a cooling device, wherein the wind ring main body is used for blowing and expanding the polyethylene heat-shrinkable film; the outer side of the wind ring main body is fixedly provided with a supporting disc, a plurality of stand columns are fixedly arranged on the supporting disc, a rotary cylinder with an opening at the top is rotatably arranged above the supporting disc, and the rotary cylinder is positioned among the stand columns and can rotate;
The inner side wall of the rotary drum is fixedly provided with vertically arranged blades, the polyethylene heat-shrinkable film is covered inside the rotary drum, and when the rotary drum rotates, annular flowing wind can be formed inside the rotary drum;
An axial flow fan blade is arranged at the top opening of the rotary drum, and when the rotary drum rotates, the rotary drum rotates together with the axial flow fan blade to realize upward exhaust;
When the axial flow fan blades and the blades are carried by the rotating cylinder to synchronously move, wind in the rotating cylinder can spirally flow upwards along the outer side of the polyethylene heat-shrinkable film;
the supporting disc is also provided with an air inlet.
Preferably, the top inside wall fixed mounting of rotatory section of thick bamboo has the bracing piece, and fixed mounting has the back shaft on the bracing piece, and axial fan blade installs in the outside of back shaft.
Preferably, the upright post is fixedly provided with a supporting rod, the supporting rod is rotatably provided with a supporting shaft, and the outer side of the supporting shaft is fixedly provided with an axial flow fan blade;
the support rod is fixedly provided with a first motor, and an output shaft of the first motor is fixedly connected with the support shaft and used for rotating with the support shaft.
Preferably, a rotating shaft is fixedly arranged at one side of the axial flow fan blade, which is contacted with the supporting shaft, a first bevel gear is fixedly arranged at one end of the rotating shaft, which is far away from the axial flow fan blade,
The top of the support shaft is rotatably provided with a compression bar, the compression bar stretches into the inner cavity of the support shaft, one end of the compression bar positioned in the support shaft is fixedly provided with a second bevel gear, and the first bevel gear and the second bevel gear are meshed together;
The upper end of the upright post is provided with a sliding rod capable of sliding up and down, the sliding rod slides downwards to be pressed together with the pressing rod, and when the rotary cylinder rotates, the first bevel gear can roll on the second bevel gear, so that the rotating shaft of the axial flow fan blade rotates on the supporting shaft.
Preferably, the support shaft is of a cylindrical structure with an opening at the top, the upper end of the support shaft is rotationally covered with a gland, the axle center of the gland is slidably provided with a pressure bar of a prismatic structure, and the pressure bar penetrates through the gland and stretches into the inner cavity of the support shaft;
The upper end of the pressure lever is provided with a spring, the bottom of the spring is contacted with the pressure cover, and the pressure lever is provided with upward elastic force;
the bottom of the compression bar is rotatably provided with a connecting rod which can be opened outwards;
One side of the gland, which is positioned in the support shaft, is fixedly provided with a support disc, and the second bevel gear is fixedly connected with the bottom of the support disc;
the upper end of the supporting disc is fixedly provided with a supporting ring;
The gland is located the inside one side of back shaft and still fixed mounting has the clamping ring.
Preferably, the upper end of the support disc is fixedly provided with a connecting column, the other end of the connecting column is fixedly connected with the gland, and the compression ring is positioned right above the support ring.
Preferably, the compression bar is of cylindrical structure.
Preferably, the bottom of the compression bar is fixedly provided with a connecting disc, the connecting disc is provided with uniformly distributed mounting holes, one end of the connecting rod is rotatably mounted in the mounting holes and can vertically rotate in the mounting holes.
Preferably, when the compression bar is positioned at the bottommost part, the connecting rod is contacted with the supporting ring, and the connecting rod is in an upward contracted state and is not contacted with the inner side wall of the supporting shaft;
When the compression bar moves upwards to the topmost part under the action of the spring, the connecting rod is in an open state, and one end of the connecting rod, which is far away from the compression bar, is extruded with the inner side of the supporting shaft.
Preferably, the air inlet is spirally arranged.
Compared with the prior art, the invention has the beneficial effects that:
According to the invention, the rotary cylinder, the blades and the axial flow fan blades are arranged, when the rotary cylinder rotates, the blades and the axial flow fan blades rotate together, the blades generate circularly flowing wind, when the axial flow fan blades rotate, the blades and the axial flow fan blades rotate together, spiral upward wind is formed and is discharged from the top of the rotary cylinder, and an independent air suction type air inlet mode is adopted, so that the wind is more stable in the flowing process, and the shaking of the polyethylene heat-shrinkable film caused by gas expansion caused by passive blowing can not occur.
Drawings
FIG. 1 is a diagram of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the overall structure of the present invention;
FIG. 3 is a cross-sectional view of an axial flow fan blade and post connection of the present invention;
FIG. 4 is a block diagram of the slide bar, the compression bar and the support shaft of the present invention;
FIG. 5 is a cross-sectional view of the slide bar, the compression bar and the support shaft of the present invention;
FIG. 6 is a top view of the rotating drum of the present invention;
FIG. 7 is a cross-sectional view of the support shaft, axial flow fan blades and bevel gears of the present invention;
FIG. 8 is a block diagram of the compression bar, compression bar and support plate of the present invention;
FIG. 9 is a cross-sectional view of the connecting rod of the present invention open in the support shaft;
fig. 10 is a cross-sectional view of the connecting rod of the present invention closed in the support shaft.
In the figure: 1. a wind ring main body; 2. a column; 3. a rotary drum; 4. a blade; 5. axial flow fan blades; 6. a support shaft; 61. a gland; 7. an air inlet; 8. a gear ring; 9. a drive gear; 10. a slide bar; 11. a screw rod; 12. a bearing; 13. a first bevel gear; 14. a compression bar; 15. a spring; 16. a connecting rod; 17. a support plate; 18. and a compression ring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to the drawings, the present embodiment provides a cooling device for a polyethylene heat-shrinkable film, comprising a wind ring main body 1 for blow-molding and expanding the polyethylene heat-shrinkable film a; the outside fixed mounting of wind ring main part 1 has the mounting disc, and fixed mounting has 2 stands 2 on the mounting disc, and the top of mounting disc still rotates installs open-top's rotary drum 3, and rotary drum 3 is located between 2 stands 2. The bearing 12 is installed in the outside of rotary drum 3, and the inner circle of bearing is in the same place with the lateral wall of rotary drum 3, and the outer lane of bearing is in the same place with stand 2 fixed mounting, and rotary drum 3 can rotate between 2 stands 2. A gap is left between the bottom of the rotary cylinder 3 and the bottom of the mounting plate so that the rotary cylinder 3 can normally rotate, as shown in fig. 1 and 2. The mounting plate is also provided with an air inlet 7, the air inlet 7 is spirally arranged, and when the rotary cylinder 3 rotates, wind can spirally enter the rotary cylinder 3 from the air inlet 7.
The second motor is fixedly arranged on the mounting plate, the driving gear 9 is fixedly arranged at the output end of the second motor, the gear ring 8 meshed with the driving gear 9 is fixedly arranged at the bottom of the rotary cylinder 3, and the driving gear 9 can rotate with the gear ring 8 so as to rotate with the rotary cylinder 3.
The inner side wall of the rotary cylinder 3 is fixedly provided with a vertically arranged blade 4, and the blade 4 is parallel to the rotation axis of the rotary cylinder 3. The rotary drum 3 houses the polyethylene heat-shrinkable film inside, and when the rotary drum 3 is rotated, the blades 4 can form a wind flowing in a ring shape inside the rotary drum 3, as indicated by arrows in fig. 6.
The top inside wall fixed mounting of rotary drum 3 has the bracing piece, and fixed mounting has back shaft 6 on the bracing piece, and axial fan blade 5 fixed mounting is in the outside of back shaft 6. When the rotary cylinder 3 rotates, the axial flow fan blades 5 can be driven to rotate together, and when the axial flow fan blades 5 rotate, the air can be exhausted upwards, so that the wind vertically flows upwards.
While when the axial flow fan 5 and the blades 4 are moved synchronously by the rotary drum 3 due to the fixed mounting of both the axial flow fan 5 and the blades 4 with the rotary drum 3, wind inside the rotary drum 3 flows spirally upward along the outer side of the polyethylene heat shrink film a as shown by the arrow in fig. 2. When the wind flows spirally, the flowing wind flows obliquely along the tangential direction of the polyethylene heat-shrinkable film a, and when the wind flows, the polyethylene heat-shrinkable film a is relatively stable. Compared with blowing along the axial direction of the polyethylene heat-shrinkable film a, the polyethylene heat-shrinkable film a is easy to shake when wind flows due to the larger axial length of the polyethylene heat-shrinkable film a, and the spirally flowing wind avoids the situation. And when the rotary cylinder 3 rotates, the speed is stable, the generated spiral wind is stable, and the condition that the polyethylene heat-shrinkable film a shakes due to different wind speeds caused by unstable air outlets is avoided.
And the air is exhausted upward from the top thereof when the rotary drum 3 rotates. The rotary drum 3 can independently induced draft, compares with current adoption blast type cooling structure, and the flow of wind is more stable, controllable, and the expansion of air current can make polyethylene heat shrinkage film a shake when the condition that the wind direction outward expansion flow that leads to when blowing in the time of wind can not producing in the time of flowing moreover blows appears blowing, and is less to polyethylene heat shrinkage film a influence.
In a further embodiment, in order to conveniently adjust the spiral rising speed of the air flow, the heat-shrinkable polyethylene film is suitable for polyethylene heat-shrinkable films with different thicknesses, and when the polyethylene heat-shrinkable film is thicker, a larger flow speed is required, so that more heat can be taken away. As shown in fig. 3, the axial flow fan 5 may also be disposed on the upright post 2, where the axial flow fan 5 is located right above the opening of the rotary drum 3 and is disposed concentrically with the rotation axis of the rotary drum 3.
A support rod is fixedly arranged on the upright post 2, a support shaft 6 is rotatably arranged on the support rod, and axial flow fan blades 5 are fixedly arranged on the outer side of the support shaft 6; the support rod is fixedly provided with a first motor, and an output shaft of the first motor is fixedly connected with the support shaft 6 and used for carrying the support shaft 6 to rotate. The first motor can rotate with the axial flow fan 5, and the axial flow fan 5 can move independently. The first motor is a variable frequency speed regulating motor, and the output speed of the first motor can be regulated, so that the rotating speed of the axial flow fan blade 5 is changed. After the rotational speed of the axial flow fan 5 is changed, the upward exhaust speed of the rotary drum 3 can be changed, thereby changing the spiral rising speed of the air flow.
In a further embodiment, in addition to changing the above-mentioned speed of the spiral air flow by means of a motor, the flow size of the air flow can be adjusted by adjusting the angle of the axial flow fan blades 5.
As shown in fig. 4, 5 and 7, the axial flow fan 5 is mounted with the rotary drum 3, and the axial flow fan 5 rotates together with the rotary drum 3. The supporting shaft 6 is of a cavity structure, a rotating shaft is fixedly arranged on one side, contacted with the supporting shaft 6, of the axial flow fan blade 5, the rotating shaft can rotate on the side wall of the supporting shaft 6, and the rotating shaft extends into the cavity structure.
The end of the rotating shaft inside the support shaft 6 is fixedly provided with a first bevel gear 13. The top of the support shaft 6 is rotatably provided with a pressing rod 14, and the pressing rod 14 is of a cylindrical structure. The bottom of the pressing rod 14 stretches into the inner cavity of the supporting shaft 6, a second bevel gear is fixedly arranged at one end of the pressing rod 14 positioned inside the supporting shaft 6, the first bevel gear 13 is meshed with the second bevel gear, and the first bevel gear 13 can roll on the second bevel gear.
The slide bar 10 is installed to the upper end of stand 2, has seted up the mounting hole that matches with stand 2 on the slide bar 10, and the upper end of stand 2 is installed in the mounting hole, and slide bar 10 can slide from top to bottom at the upper end of stand 2. One end of the slide bar 10 is also provided with a threaded hole in which a screw rod 11 is arranged. The top of the upright post 2 is fixedly provided with a third motor, the output end of the third motor is fixedly connected with a screw rod 11 and used for carrying the screw rod 11 to rotate, and the screw rod 11 can carry the slide rod 10 to move up and down when rotating so as to provide power for the slide rod 10.
When the slide bar 10 slides down to the bottommost part, the slide bar and the pressure bar 14 are pressed together, and pressure is generated on the pressure bar 14. When the rotary drum 3 rotates, under the action of pressure, the pressure lever 14 can not rotate together with the rotary drum 3, namely, the second bevel gear can not rotate together with the rotary drum 3, and the axial flow fan blade 5 and the support shaft 6 can rotate together with the rotary drum 3, when the support shaft 6 and the axial flow fan blade 5 rotate, the first bevel gear 13 rolls on the second bevel gear, so that the rotating shaft of the axial flow fan blade 5 rotates on the support shaft 6, and the inclination angle of the axial flow fan blade 5 is adjusted. In principle, the larger the inclination angle of the axial flow fan 5 (i.e., the inclination angle is 90 degrees when the axial flow fan 5 is in a vertical state), the larger the upward airflow. Thereby adjusting the air flow speed in the vertical direction and changing the upward flowing speed of the spiral air flow.
When the axial flow fan blade 5 is in a horizontal state, the axial flow fan blade 5 can seal the opening at the top, and the opening at the top of the rotary cylinder 3 is the smallest. In this state, the air flow in the rotary cylinder 3 can only automatically rise by the lifting force generated by heat absorbed by the air flow, and the air flow in the rotary cylinder 3 is almost in a horizontal spiral rotation state, in this state, the air flow horizontally rotates in the rotary cylinder 3, the temperature between the air flows is uniform, the heat preservation effect on the polyethylene heat-shrinkable film is achieved, and the embrittlement of the polyethylene heat-shrinkable film caused by too fast cooling is avoided.
After the angle of the axial flow fan blade 5 is adjusted, the third motor turns over with the screw rod 11, so that the screw rod 11 rises with the slide rod 10 and is separated from the pressing rod 14, and the rotating cylinder 3 can rotate with the axial flow fan blade 5.
In the above-mentioned scheme, because depression bar 14 is the cylinder structure, when axial fan blade 5 rotates along with rotary drum 3, wind produces the resistance to axial fan blade 5, and under the effect of windage, axial fan blade 5 rotates very easily round the axis of rotation, and axial fan blade 5 when rotating, depression bar 14 can take place the autorotation, from making axial fan blade 5 inclination change. In order to avoid the axial flow fan blade 5 from rotating due to wind resistance during rotation,
In a further embodiment, as shown in fig. 8-10, the support shaft 6 is a cylindrical cavity structure with an open top, the upper end of the support shaft 6 is rotatably covered with a gland 61, and the support shaft 6 and the gland 61 can rotate relatively. The axial center of the pressing cover 61 is slidably provided with a prismatic-structured pressing rod 14, and as shown in fig. 8, the pressing rod 14 is of a quadrangular-prismatic structure. The pressing rod 14 penetrates through the pressing cover 61 and stretches into the inner cavity of the supporting shaft 6, a bearing plate is fixedly arranged at the upper end of the pressing rod 14, a spring 15 is fixedly arranged below the bearing plate, the bottom of the spring 15 and the top of the pressing cover 61 are fixedly arranged together, and upward elastic force is provided for the pressing rod 14, as shown in fig. 9.
As shown in fig. 8 and 9, the bottom of the compression bar 14 is fixedly provided with a connection disc, the connection disc is provided with uniformly distributed mounting openings, one end of the connection rod 16 is fixedly provided with a rotating shaft, the rotating shaft is rotatably mounted in the mounting opening, and the connection rod 16 can vertically rotate around the rotating shaft in the mounting opening. The connecting rod 16 can be opened or closed to the outside.
As shown in fig. 8 and 9, two connecting columns are fixedly installed on one side of the gland 61 positioned inside the support shaft 6, a support disc 17 is fixedly installed at the bottom of each connecting column, a second bevel gear is fixedly connected with the bottom of the support disc 17, a support ring is fixedly installed at the upper end of the support disc 17, and the support disc 17 and the support ring are concentrically arranged.
The pressure cover 61 is also fixedly provided with a pressure ring 18 at one side of the support shaft 6, and the pressure ring 18 is positioned right above the support ring, as shown in fig. 8-10.
When the slide bar 10 moves downward, a downward pressure can be generated on the pressing bar 14, thereby moving the pressing bar 14 downward and compressing the spring 15. During the downward movement of the pressure lever 14, it is possible to move downward with the connecting disc, and the pressure lever 14 can gradually move into the support ring. When the compression bar 14 moves to the bottommost part, the connecting rod 16 is contacted with the supporting ring, the supporting ring generates upward force on the connecting rod 16, and as shown in fig. 10, the connecting rod 16 is in an upward contracted state and is not contacted with the inner side wall of the supporting shaft 6; the support shaft 6 and the gland 61 can rotate relatively. A prismatic groove matched with the pressure bar 14 is formed in the bottom of the slide bar 10, and when the slide bar 10 presses the pressure bar 14 together, the pressure bar 14 is clamped into the prismatic groove, and when the support shaft 6 rotates along with the rotary drum 3, the pressure cover 61 and the pressure bar 14 cannot rotate along with the rotary drum 3. When the support shaft 6 rotates, the first bevel gear 13 on the axial flow fan 5 rolls on the second bevel gear, and rotates with the rotation shaft of the axial flow fan 5, thereby adjusting the angle of the axial flow fan 5.
After the angle of the axial flow fan blade 5 is adjusted, the slide bar 10 moves upwards, the pressure bar 14 moves upwards under the action of the spring 15, the connecting disc at the bottom of the pressure bar 14 moves upwards along with the pressure bar 14,
When the pressing rod 14 moves up to the top, the upper end of the connecting rod 16 contacts with the bottom of the pressing ring 18, the pressing ring 18 generates a downward force on the connecting rod 16, as shown in fig. 9, the connecting rod 16 is in an opened state, and one end of the connecting rod 16 away from the pressing rod 14 presses with the inner side of the supporting shaft 6 and generates a pressing force with the inner side wall of the supporting shaft 6. So that the pressing rod 14 and the pressing cover 61 are connected with the inner side wall of the support shaft 6 by pressure (the pressure generates resistance). When the rotary cylinder 3 rotates with the support shaft 6, the pressing rod 14 and the pressing cover 61 can better rotate along with the support shaft 6, and the rotation between the pressing rod 14 and the pressing cover 61 cannot easily occur (in this state, the first bevel gear on the axial flow fan blade 5 needs a larger driving force to rotate the second bevel gear on the pressing cover 61 when rotating), so that the situation that the inclination angle of the axial flow fan blade 5 changes due to wind resistance when the axial flow fan blade 5 rotates is avoided, and the locking of the axial flow fan blade 5 can be realized.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A cooling device for a polyethylene heat-shrinkable film, characterized in that:
Comprises a wind ring main body (1) for blowing and expanding a polyethylene heat-shrinkable film; the outside of the wind ring main body (1) is fixedly provided with a supporting disc, a plurality of stand columns (2) are fixedly arranged on the supporting disc, a rotary cylinder (3) with an opening at the top is also rotatably arranged above the supporting disc, and the rotary cylinder (3) is positioned among the stand columns (2) and can rotate;
the inner side wall of the rotary cylinder (3) is fixedly provided with vertically arranged blades (4), the rotary cylinder (3) covers the polyethylene heat shrinkage film inside, and when the rotary cylinder (3) rotates, annular flowing wind can be formed inside the rotary cylinder (3);
an axial flow fan blade (5) is arranged at the top opening of the rotary cylinder (3), and when the rotary cylinder (3) rotates, the rotary cylinder rotates together with the axial flow fan blade (5) to realize upward exhaust;
When the axial flow fan blades (5) and the blades (4) are carried by the rotary cylinder (3) to synchronously move, wind in the rotary cylinder (3) can spirally flow upwards along the outer side of the polyethylene heat-shrinkable film;
An air inlet (7) is also formed in the supporting disc;
The inner side wall of the top of the rotary cylinder (3) is fixedly provided with a supporting rod, the supporting rod is fixedly provided with a supporting shaft (6), the axial flow fan blade (5) is arranged on the outer side of the supporting shaft (6), one side of the axial flow fan blade (5) contacted with the supporting shaft (6) is fixedly provided with a rotating shaft, one end of the rotating shaft far away from the axial flow fan blade (5) is fixedly provided with a first bevel gear (13),
A pressing rod (14) is rotatably arranged at the top of the supporting shaft (6), the pressing rod (14) stretches into the inner cavity of the supporting shaft (6), a second bevel gear is fixedly arranged at one end of the pressing rod (14) positioned in the supporting shaft (6), and the first bevel gear (13) and the second bevel gear are meshed together;
The upper end of the upright post (2) is provided with a sliding rod (10) capable of sliding up and down, the sliding rod (10) slides downwards to be pressed together with a pressing rod (14), and when the rotary cylinder (3) rotates, the first bevel gear (13) can roll on the second bevel gear, so that the rotating shaft of the axial flow fan blade (5) rotates on the supporting shaft (6);
When the support shaft (6) and the axial flow fan blades (5) rotate, the first bevel gear (13) rolls on the second bevel gear, so that the rotating shaft of the axial flow fan blades (5) rotates on the support shaft (6), and the inclination angle of the axial flow fan blades (5) is adjusted;
The larger the inclination angle of the axial flow fan blade (5), the larger the upward-driven airflow is, so that the airflow speed in the vertical direction is regulated, and the upward-flowing speed of the spiral airflow is changed.
2. A cooling device for a polyethylene heat-shrinkable film according to claim 1, wherein: a support rod is fixedly arranged on the upright post (2), a support shaft (6) is rotatably arranged on the support rod, and axial flow fan blades (5) are fixedly arranged on the outer side of the support shaft (6);
the support rod is also fixedly provided with a first motor, and an output shaft of the first motor is fixedly connected with the support shaft (6) and used for carrying the support shaft (6) to rotate.
3. A cooling device for a polyethylene heat-shrinkable film according to claim 1, wherein: the support shaft (6) is of a cylindrical structure with an opening at the top, the upper end of the support shaft (6) is rotationally covered with a gland (61), the axle center of the gland (61) is slidably provided with a pressure bar (14) of a prismatic structure, and the pressure bar (14) penetrates through the gland (61) and stretches into the inner cavity of the support shaft (6);
The upper end of the pressure rod (14) is provided with a spring (15), the bottom of the spring (15) is contacted with the gland (61) together, and upward elasticity is provided for the pressure rod (14);
The bottom of the compression bar (14) is rotatably provided with a connecting rod (16), and the connecting rod (16) can be opened outwards;
One side of the gland (61) positioned in the supporting shaft (6) is fixedly provided with a supporting disc (17), and the second bevel gear is fixedly connected with the bottom of the supporting disc (17);
A supporting ring is fixedly arranged at the upper end of the supporting disc (17);
one side of the gland (61) positioned in the support shaft (6) is fixedly provided with a compression ring (18).
4. A cooling device for a polyethylene heat-shrinkable film according to claim 3, wherein: the upper end of the supporting disc (17) is fixedly provided with a connecting column, the other end of the connecting column is fixedly connected with the gland (61), and the compression ring (18) is positioned right above the supporting ring.
5. A cooling device for a polyethylene heat-shrinkable film according to claim 3, wherein: the compression bar (14) is of a cylindrical structure.
6. A cooling apparatus for a polyethylene heat-shrinkable film according to claim 5, wherein: the bottom of depression bar (14) fixed mounting has the connection pad, has offered evenly distributed's installing port on the connection pad, and the one end of connecting rod (16) is rotated and is installed in the installing port to can rotate from top to bottom in the installing port.
7. A cooling apparatus for a polyethylene heat-shrinkable film according to claim 5, wherein: when the compression bar (14) is positioned at the bottommost part, the connecting rod (16) is in contact with the supporting ring, and the connecting rod (16) is in an upward contracted state and is not in contact with the inner side wall of the supporting shaft (6);
when the compression bar (14) moves upwards to the top under the action of the spring (15), the connecting rod (16) is in an open state, and one end of the connecting rod (16) far away from the compression bar (14) is extruded with the inner side of the supporting shaft (6).
8. A cooling device for a polyethylene heat-shrinkable film according to claim 1, wherein: the air inlet (7) is spirally arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310704307.9A CN116714151B (en) | 2023-07-10 | 2023-07-10 | Cooling device for polyethylene heat-shrinkable film |
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|---|---|---|---|---|
| CN105415550A (en) * | 2015-12-10 | 2016-03-23 | 华南理工大学 | Blown film cooling method and device based on air source dynamic distribution |
| CN105415551A (en) * | 2015-12-10 | 2016-03-23 | 华南理工大学 | Blown film inner and outer airflow collaborative cooling method and device based on chimney effect |
| CN213350107U (en) * | 2020-07-21 | 2021-06-04 | 建湖县寅达包装制品有限公司 | Quick cooling device for film blowing machine |
| CN113085156A (en) * | 2021-02-23 | 2021-07-09 | 唐集体 | Plastic film blowing machine |
| CN214266319U (en) * | 2020-11-20 | 2021-09-24 | 江苏新鲁新材料科技有限公司 | Cooling device for film blowing machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2704100T3 (en) * | 2013-05-08 | 2019-03-14 | Kdesign Gmbh | Calibration device for calibrating an extruded tubular film |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105415550A (en) * | 2015-12-10 | 2016-03-23 | 华南理工大学 | Blown film cooling method and device based on air source dynamic distribution |
| CN105415551A (en) * | 2015-12-10 | 2016-03-23 | 华南理工大学 | Blown film inner and outer airflow collaborative cooling method and device based on chimney effect |
| CN213350107U (en) * | 2020-07-21 | 2021-06-04 | 建湖县寅达包装制品有限公司 | Quick cooling device for film blowing machine |
| CN214266319U (en) * | 2020-11-20 | 2021-09-24 | 江苏新鲁新材料科技有限公司 | Cooling device for film blowing machine |
| CN113085156A (en) * | 2021-02-23 | 2021-07-09 | 唐集体 | Plastic film blowing machine |
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Denomination of invention: A cooling device for polyethylene heat shrink film Granted publication date: 20240524 Pledgee: Hangzhou High-tech Financing Guarantee Co.,Ltd. Pledgor: Hangzhou Jinhang New Materials Co.,Ltd. Registration number: Y2024330001907 |