CN117445275A - Plastic film casting equipment - Google Patents
Plastic film casting equipment Download PDFInfo
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- CN117445275A CN117445275A CN202311793495.3A CN202311793495A CN117445275A CN 117445275 A CN117445275 A CN 117445275A CN 202311793495 A CN202311793495 A CN 202311793495A CN 117445275 A CN117445275 A CN 117445275A
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- Prior art keywords
- cooling roller
- plastic film
- cooling
- pipe
- air
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- 239000002985 plastic film Substances 0.000 title claims abstract description 78
- 229920006255 plastic film Polymers 0.000 title claims abstract description 78
- 238000005266 casting Methods 0.000 title claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 135
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 239000004033 plastic Substances 0.000 claims abstract description 14
- 229920003023 plastic Polymers 0.000 claims abstract description 14
- 238000001125 extrusion Methods 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 4
- 230000008018 melting Effects 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract 2
- 239000002245 particle Substances 0.000 claims abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims 3
- 239000007788 liquid Substances 0.000 abstract description 34
- 238000000034 method Methods 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 229920000426 Microplastic Polymers 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
- B29C41/26—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length by depositing flowable material on a rotating drum
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/36—Feeding the material on to the mould, core or other substrate
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/46—Heating or cooling
-
- 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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses plastic film casting equipment, which comprises an extrusion mechanism for conveying, heating and melting plastic particles, wherein a casting die head with controllable plastic thickness is connected to the left side of the extrusion mechanism; the air circulation box body is fixedly arranged below the cooling frame body, a refrigerator is arranged in the air circulation box body, an air outlet and an air inlet are respectively formed in the front end of the air circulation box body, and the air inlet pipe and the air outlet pipe are respectively arranged in the center column to realize the circulation flow of cold air in the center column; and the pipe fitting and the transfer piece are respectively and fixedly arranged in the cooling roller set and the center column. This plastic film casting equipment through sealing liquid in confined space, and then when the cooling roller rotates the plastic film in the outside of center post and carries, can avoid liquid leakage and influence plastic film's quality, can realize carrying out cascaded cooling to plastic film simultaneously, reduces plastic film's deformation risk, improves plastic film's quality.
Description
Technical Field
The invention relates to the technical field of plastic film casting production, in particular to plastic film casting equipment.
Background
The plastic film is widely applied in our daily life, the industries for producing the plastic film are also various, common processes are generally a calendaring method, a casting method, a blow molding method, a stretching method and the like, wherein the plastic film produced by the casting method has the advantage of transparent luminosity, is widely applied to the production of certain plastic films, and when the plastic film is molded by adopting a film casting device, the film molding process is as follows in sequence: film casting forming, cooling, thickness detection, trimming treatment, corona treatment and final winding forming, wherein a cooling roller is critical to the forming condition of the film.
In the prior art, for example, in patent application with the publication number of CN110027151B and the publication number of 2021-04-16 and entitled plastic film casting device, in the process of cooling a film on a cooling roller, a motor drives an outer roller of the cooling roller to continuously rotate (an inner roller is fixedly arranged on a frame), and the rotation of the outer roller drives a stirring blade on the cooling roller to continuously stir cooling liquid in a closed cavity, so that the temperature of the cooling liquid in the closed cavity is uniform, and the uniformity of the surface temperature of the outer roller is further ensured;
in the practical use process of the device, the outer roller rotates on the outer side of the inner roller, the cooling liquid is located in the closed cavity between the inner roller and the outer roller, when proper sealing measures are not adopted between the outer roller and the inner roller, the problem of water leakage is likely to occur, the production quality of the plastic film is directly affected, the temperature of the plastic film is inconvenient to control to realize gradient cooling, the cooling speed of the plastic film is easy to be promoted to be uneven, the cooling stress is increased, the flatness and the mechanical property of the plastic film are reduced, the deformation risk of the plastic film is increased, and the quality of the plastic film is reduced.
We have therefore proposed a plastic film casting apparatus so as to solve the problems set forth in the foregoing.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to provide a plastic film casting device which solves the problems in the market at present, which are presented by the background technology.
2. Technical proposal
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a plastic film casting equipment, includes carries the extrusion mechanism that heats the melting to plastic granules, the left side of extrusion mechanism is connected with the casting die head of controllable plastics thickness, just the left side of extrusion mechanism installs the cooling support body, the inside fixed mounting of cooling support body has the center post, and the inside bearing of cooling support body installs the chill roll group, and the chill roll group is established in the outside of center post, the plastic support body is installed in the left side of cooling support body, and thickness measuring mechanism is installed on the right side of plastic support body, thickness measuring mechanism is used for detecting the thickness of plastic film, and cutting mechanism is installed in the left side of plastic support body, cutting mechanism cuts the both sides corner of plastic film to cutting mechanism's left end is installed and can is carried out the rolling mechanism of roll-up to plastic film;
the air circulation box body is fixedly arranged below the cooling frame body, a refrigerator is arranged in the air circulation box body, an air outlet and an air inlet are respectively formed in the front end of the air circulation box body, the air outlet and the air inlet are respectively connected with an air inlet pipe and an air outlet pipe through pipelines, and the air inlet pipe and the air outlet pipe are respectively arranged in the center column to realize the circulation flow of cold air in the center column;
the pipe fitting and the transfer piece are respectively and fixedly installed in the cooling roller set and the inner part of the center column, the front end and the rear end of the pipe fitting are respectively provided with a through hole, the middle part of the pipe fitting is communicated with a through pipe, and the transfer piece is respectively connected with an air inlet pipe and an air outlet pipe to realize air circulation.
Further, the cooling roller set comprises a first cooling roller, a second cooling roller and a third cooling roller, the first cooling roller, the second cooling roller and the third cooling roller are respectively sleeved on the outer sides of the three center posts, a synchronous belt assembly is connected between the end parts of the first cooling roller, the second cooling roller and the third cooling roller and the output end of the driving motor, and the driving motor is mounted on the outer side wall of the cooling frame body.
Through the technical scheme, the plastic film can be cooled by the first cooling roller, the second cooling roller and the third cooling roller in sequence.
Further, the first cooling roller is identical to the second cooling roller and the third cooling roller in structure, the first cooling roller is composed of a first inner cylinder and a first outer cylinder which are distributed inside and outside, sealing cover plates are connected to the front end and the rear end of the first inner cylinder and the front end and the rear end of the first outer cylinder in a sealing mode, and water liquid is filled in the sealing space formed by the first inner cylinder, the first outer cylinder and the sealing cover plates.
Through the technical scheme, the water liquid can be sealed in a closed space formed by the first inner cylinder, the first outer cylinder and the sealing cover plate, so that leakage is avoided.
Further, the second cooling roller is composed of a second inner cylinder and a second outer cylinder which are distributed inside and outside, the third cooling roller is composed of a third inner cylinder and a third outer cylinder which are distributed inside and outside, the inside and outside diameters of the second outer cylinder, the third outer cylinder and the first outer cylinder are the same, and the inside and outside diameters of the first inner cylinder, the second inner cylinder and the third inner cylinder are sequentially increased.
Through the technical scheme, the temperatures of the first cooling roller, the second cooling roller and the third cooling roller are gradually reduced.
Further, the pipe fitting is equiangularly distributed about the center of the first cooling roller, and the pipe fitting is of a U-shaped design, and the inner wall of the first cooling roller is attached to the outer wall of the center column, and the pipe fitting and the first cooling roller are of an integrated structural design.
Through above-mentioned technical scheme for the pipe fitting can evenly cool down to the water liquid, and under inertial action, stir the water liquid, improve water liquid temperature homogeneity.
Further, the interior of center post is provided with three to transfer the piece, and the center of three transfer piece corresponds with the center of a siphunculus and two openings respectively to the transfer piece that is located the middle part is connected with the end of intake pipe, and the transfer piece that is located the front and back both sides is connected with the outlet duct.
Through the technical scheme, cold air is injected from the middle of the pipe fitting and flows out from two sides, so that the flow path is shortened relatively, and the temperature difference is reduced.
Further, the transfer piece includes interior ring and the outer ring that inside and outside set up, and is connected with the connecting tube between interior ring and the outer ring, and cavity and runner have been seted up respectively on the inside of interior ring and the outside of outer ring, moreover the inner wall intercommunication of interior ring has the business turn over lug in order to be connected with intake pipe and outlet duct.
Through the technical scheme, the gas keeps flowing state in the rotation process of the cooling roller.
Further, the flow channel is opposite to the through hole, the flow channel is communicated with the cavity through the connecting pipe, and the connecting pipes are distributed at equal angles.
Through the technical scheme, the gas can flow.
3. Advantageous effects
Compared with the prior art, the plastic film casting equipment provided by the invention seals liquid in a closed space, so that when the cooling roller rotates at the outer side of the central column to convey the plastic film, the liquid leakage can be avoided to influence the quality of the plastic film, and meanwhile, the plastic film can be cooled stepwise, the deformation risk of the plastic film is reduced, and the quality of the plastic film is improved, and the plastic film casting equipment comprises the following specific contents:
(1) When the pump body and the refrigerator in the gas circulation box body are started, cooled air can be sequentially conveyed to the transfer pieces positioned in the middle through the air outlet, the pipeline and the air inlet, and when the cold air flows in the transfer pieces, the cold air can enter the pipe fitting from the through pipe and can be conveyed to the front transfer piece and the rear transfer piece from the through holes formed in the two ends of the pipe fitting, the front transfer piece and the rear transfer piece are input into the gas circulation box body through the air outlet pipe, the pipeline and the air inlet, so that the circulation of the cold air is realized, when the cold air flows in the pipe fitting, the pipe fitting is positioned in a closed space formed by the first inner cylinder, the first outer cylinder and the sealing plate, and the cold air exchanges energy with the liquid in the closed space, the liquid is cooled, and then the plastic film is cooled through the first outer cylinder, and as the inner diameter and the outer diameter of the first inner cylinder, the second inner cylinder and the third inner cylinder are sequentially increased, the volume of a closed space formed between the first inner cylinder, the second inner cylinder and the corresponding outer cylinder is gradually reduced, the capacity of the liquid in the memory is reduced, the temperature of the liquid in the first cooling roller is lower than that of the liquid in the second cooling roller under a certain time, and the temperature of the liquid in the second cooling roller is lower than that of the liquid in the third cooling roller, the stepped cooling and cooling of the plastic film are realized, the cooling speed of the plastic film is promoted to be uniform, the cooling stress is reduced, the flatness and the mechanical property of the plastic film are enhanced, the deformation risk of the plastic film is reduced, and the quality of the plastic film is improved;
(2) When the first cooling roller rotates outside the central column, the internal liquid is impacted reversely to the pipe fitting arranged in the first cooling roller under the action of inertia, and the pipe fitting stirs the internal liquid, so that the temperature uniformity of the liquid is improved;
(3) The liquid is sealed in the sealed space formed by the first inner cylinder, the first outer cylinder and the sealing cover plate, so that the quality of the plastic film is prevented from being influenced due to the leakage of the liquid when the first cooling roller rotates outside the central column.
Drawings
FIG. 1 is a schematic diagram of the overall side view and three-dimensional structure of the present invention;
FIG. 2 is a schematic side sectional perspective view of a cooling rack according to the present invention;
FIG. 3 is a schematic side sectional perspective view of a first cooling roll according to the present invention;
FIG. 4 is a schematic side sectional perspective view of a first inner cylinder of the present invention;
FIG. 5 is a schematic side cross-sectional perspective view of a center pillar according to the present invention;
FIG. 6 is a schematic side-sectional perspective view of a transfer member according to the present invention;
FIG. 7 is a schematic side sectional view of a cooling roll set according to the present invention.
In the figure: 1. an extrusion mechanism; 2. cooling the frame body; 3. a center column; 31. an air inlet pipe; 32. an air outlet pipe; 4. a cooling roller set; 41. a first cooling roller; 411. a first inner cylinder; 412. a first outer cylinder; 413. a cover plate; 42. a second cooling roller; 421. a second inner cylinder; 422. a second outer cylinder; 43. a third cooling roller; 431. a third inner cylinder; 432. a third outer cylinder; 5. a driving motor; 6. a timing belt assembly; 7. a gas circulation tank; 71. an air outlet; 72. an air inlet; 8. a thickness measuring mechanism; 9. a slitting mechanism; 10. a winding mechanism; 11. a pipe fitting; 111. a through pipe; 112. a through port; 12. a transfer member; 121. an inner ring; 1211. a cavity; 122. an outer ring; 1221. a flow passage; 123. a connecting pipe; 124. and in and out of the bump.
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.
Examples
Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a plastic film casting equipment, including carrying out the extrusion mechanism 1 that heats the melting to plastic granules, the casting die head of controllable plastics thickness is connected with in the left side of extrusion mechanism 1, and the left side of extrusion mechanism 1 installs cooling support body 2, the inside fixed mounting of cooling support body 2 has center post 3, and cooling support body 2's internal bearing installs chill roll group 4, and chill roll group 4 cover is established in the outside of center post 3, the plastic support body is installed in the left side of cooling support body 2, thickness measuring mechanism 8 is installed on the right side of plastic support body, thickness measuring mechanism 8 is used for detecting the thickness of plastic film, cutting mechanism 9 is installed in the left side of plastic support body, cutting mechanism 9 cuts the both sides corner of plastic film, and the rolling mechanism 10 that can roll up the plastic film is installed to cutting mechanism 9's left end; the air circulation box body 7 is fixedly arranged below the cooling frame body 2, a refrigerator is arranged in the air circulation box body 7, an air outlet 71 and an air inlet 72 are respectively formed in the front end of the air circulation box body 7, the air outlet 71 and the air inlet 72 are respectively connected with the air inlet pipe 31 and the air outlet pipe 32 through pipelines, and the air inlet pipe 31 and the air outlet pipe 32 are respectively arranged in the center column 3 to realize the circulation flow of cold air in the center column 3; the pipe fitting 11 and the transfer piece 12 are respectively and fixedly arranged in the cooling roller set 4 and the central column 3, the front end and the rear end of the pipe fitting 11 are respectively provided with a through hole 112, the middle part of the pipe fitting 11 is communicated with a through pipe 111, and the transfer piece 12 is respectively connected with the air inlet pipe 31 and the air outlet pipe 32 to realize air circulation; the transfer member 12 comprises an inner ring 121 and an outer ring 122 which are arranged inside and outside, a connecting pipe 123 is connected between the inner ring 121 and the outer ring 122, a cavity 1211 and a flow passage 1221 are respectively formed in the inner ring 121 and the outer side of the outer ring 122, and the inner wall of the inner ring 121 is communicated with an inlet and outlet bump 124 which is connected with the air inlet pipe 31 and the air outlet pipe 32; the flow passage 1221 is arranged opposite to the through hole 112, and the flow passage 1221 is communicated with the cavity 1211 through the connecting pipe 123, and the connecting pipe 123 is distributed at equal angles;
after the pump body and the refrigerator in the gas circulation box 7 are started, cooled air can be sequentially conveyed to the middle transfer piece 12 through the air outlet 71, the pipeline and the air inlet pipe 31, when the cold air flows in the transfer piece 12, the cold air can enter the pipe 11 from the through pipe 111 through the inlet and outlet lug 124, the cavity 1211, the connecting pipe 123 and the flow passage 1221, and is conveyed to the front transfer piece 12 and the rear transfer piece 12 from the through holes 112 formed at the two ends of the pipe 11, the front transfer piece 12 and the rear transfer piece 12 are input into the gas circulation box 7 through the air outlet pipe 32, the pipeline and the air inlet 72, so that the circulation of the cold air is realized, and when the cold air flows in the pipe 11, the pipe 11 is positioned in a closed space formed by the first inner cylinder 411, the first outer cylinder 412 and the sealing cover 413, the cold air exchanges energy with liquid in the closed space, the liquid is cooled, and the plastic film is cooled through the first outer cylinder 412;
the cooling roller set 4 comprises a first cooling roller 41, a second cooling roller 42 and a third cooling roller 43, the first cooling roller 41, the second cooling roller 42 and the third cooling roller 43 are respectively sleeved outside the three center posts 3, a synchronous belt assembly 6 is connected between the end parts of the first cooling roller 41, the second cooling roller 42 and the third cooling roller 43 and the output end of the driving motor 5, and the driving motor 5 is arranged on the outer side wall of the cooling frame body 2; the first cooling roller 41 has the same structure as the second cooling roller 42 and the third cooling roller 43, the first cooling roller 41 is composed of a first inner cylinder 411 and a first outer cylinder 412 which are distributed inside and outside, the front end and the rear end of the first inner cylinder 411 and the front end and the rear end of the first outer cylinder 412 are connected with a sealing plate 413 in a sealing mode, and the inside of a sealing space formed by the first inner cylinder 411, the first outer cylinder 412 and the sealing plate 413 is filled with water liquid; the second cooling roller 42 is composed of a second inner cylinder 421 and a second outer cylinder 422 which are distributed inside and outside, the third cooling roller 43 is composed of a third inner cylinder 431 and a third outer cylinder 432 which are distributed inside and outside, and the inside and outside diameters of the second outer cylinder 422, the third outer cylinder 432 and the first outer cylinder 412 are the same, and the inside and outside diameters of the first inner cylinder 411, the second inner cylinder 421 and the third inner cylinder 431 are sequentially increased;
because the inner diameter and the outer diameter of the first inner cylinder 411, the second inner cylinder 421 and the third inner cylinder 431 are sequentially increased, the volume of a closed space formed between the inner cylinder 411, the second inner cylinder 421 and the third inner cylinder 431 is gradually reduced, the capacity of the stored liquid is reduced, the temperature of the liquid in the first cooling roller 41 is lower than the temperature of the liquid in the second cooling roller 42 under a certain time, the temperature of the liquid in the second cooling roller 42 is lower than the temperature of the liquid in the third cooling roller 43, thereby realizing the step cooling and the temperature reduction of the plastic film, promoting the uniform cooling speed of the plastic film, reducing the cooling stress, enhancing the flatness and the mechanical property of the plastic film, reducing the deformation risk of the plastic film and improving the quality of the plastic film;
the pipe fitting 11 is distributed at equal angles about the center of the first cooling roller 41, the pipe fitting 11 is of U-shaped design, the inner wall of the first cooling roller 41 is attached to the outer wall of the central column 3, and the pipe fitting 11 and the first cooling roller 41 are of integrated structure design; the middle transfer pieces 12 are arranged in the center column 3, the centers of the three transfer pieces 12 correspond to the centers of one through pipe 111 and two through holes 112 respectively, the middle transfer piece 12 is connected with the end part of the air inlet pipe 31, and the transfer pieces 12 on the front side and the rear side are connected with the air outlet pipe 32;
when the first cooling roller 41 rotates outside the central column 3, the internal liquid is impacted against the pipe fitting 11 arranged in the first cooling roller 41 under the action of inertia, the pipe fitting 11 stirs the internal liquid, the uniformity of the temperature of the liquid is improved, and the liquid is sealed in the sealed space formed by the first inner cylinder 411, the first outer cylinder 412 and the sealing cover plate 413, so that the condition that the liquid leaks when the first cooling roller 41 rotates outside the central column 3 can be avoided, and the quality of the plastic film is influenced.
Working principle: when the plastic film casting equipment is used, as shown in fig. 1-7, firstly, plastic melt is extruded through an extrusion mechanism 1, under the action of an existing air knife, the plastic melt is attached to a first cooling roller 41 for cooling, forming and conveying, then, the plastic film is cooled down step by step through a second cooling roller 42 and a third cooling roller 43 in sequence, the cooling speed of the plastic film is promoted to be uniform, the cooling stress is reduced, the flatness and the mechanical property of the plastic film are enhanced, the deformation risk of the plastic film is reduced, the quality of the plastic film is improved, then, the thickness of the plastic film is measured through a thickness measuring mechanism 8, the edge of the plastic film is cut through a cutting mechanism 9, so that the edge integrity of the plastic film is ensured, and finally, the plastic film is wound up through a winding mechanism 10, so that the casting production work of the plastic film is completed.
What is not described in detail in this specification is prior art known to those skilled in the art.
In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (8)
1. A plastic film casting apparatus characterized in that: the plastic film rolling device comprises an extrusion mechanism (1) for conveying, heating and melting plastic particles, wherein a casting die head with controllable plastic thickness is connected to the left side of the extrusion mechanism (1), a cooling frame body (2) is arranged on the left side of the extrusion mechanism (1), a center column (3) is fixedly arranged in the cooling frame body (2), a cooling roller set (4) is arranged on an inner bearing of the cooling frame body (2), the cooling roller set (4) is sleeved on the outer side of the center column (3), a shaping frame body is arranged on the left side of the cooling frame body (2), a thickness measuring mechanism (8) is arranged on the right side of the shaping frame body, the thickness measuring mechanism (8) is used for detecting the thickness of a plastic film, a slitting mechanism (9) is arranged on the left side of the shaping frame body, two side corners of the plastic film are cut off by the slitting mechanism (9), and a rolling mechanism (10) capable of rolling the plastic film is arranged at the left end of the slitting mechanism (9);
the air circulation box body (7) is fixedly arranged below the cooling frame body (2), a refrigerator is arranged in the air circulation box body (7), an air outlet (71) and an air inlet (72) are respectively formed in the front end of the air circulation box body (7), the air outlet (71) and the air inlet (72) are respectively connected with the air inlet pipe (31) and the air outlet pipe (32) through pipelines, and the air inlet pipe (31) and the air outlet pipe (32) are respectively arranged in the center column (3) to realize the circulation flow of cold air in the center column (3);
pipe fitting (11) and transfer piece (12), it respectively fixed mounting in the inside of chill roll group (4) and center post (3), and opening (112) have all been seted up at both ends around pipe fitting (11), and the middle part intercommunication of pipe fitting (11) has siphunculus (111), moreover transfer piece (12) are connected with intake pipe (31) and outlet duct (32) respectively, realize the gas circulation.
2. A plastic film casting apparatus according to claim 1, characterized in that: the cooling roller set (4) comprises a first cooling roller (41), a second cooling roller (42) and a third cooling roller (43), the first cooling roller (41), the second cooling roller (42) and the third cooling roller (43) are respectively sleeved on the outer sides of the three center posts (3), and a synchronous belt assembly (6) is connected between the end parts of the first cooling roller (41), the second cooling roller (42) and the third cooling roller (43) and the output end of the driving motor (5), and the driving motor (5) is mounted on the outer side wall of the cooling frame body (2).
3. A plastic film casting apparatus according to claim 2, characterized in that: the first cooling roller (41) is identical to the second cooling roller (42) and the third cooling roller (43) in structure, the first cooling roller (41) is composed of a first inner cylinder (411) and a first outer cylinder (412) which are distributed inside and outside, sealing plates (413) are connected to the front end and the rear end of the first inner cylinder (411) and the front end and the rear end of the first outer cylinder (412) in a sealing mode, and water is filled in the sealing space formed by the first inner cylinder (411), the first outer cylinder (412) and the sealing plates (413).
4. A plastic film casting apparatus according to claim 2, characterized in that: the second cooling roller (42) is composed of a second inner cylinder (421) and a second outer cylinder (422) which are distributed inside and outside, the third cooling roller (43) is composed of a third inner cylinder (431) and a third outer cylinder (432) which are distributed inside and outside, the inner diameter and the outer diameter of the second outer cylinder (422), the third outer cylinder (432) and the first outer cylinder (412) are the same, and the inner diameter and the outer diameter of the first inner cylinder (411), the second inner cylinder (421) and the third inner cylinder (431) are sequentially increased.
5. A plastic film casting apparatus according to claim 1, characterized in that: the pipe fitting (11) is distributed at equal angles relative to the center of the first cooling roller (41), the pipe fitting (11) is of U-shaped design, the inner wall of the first cooling roller (41) is attached to the outer wall of the central column (3), and the pipe fitting (11) and the first cooling roller (41) are of integrated structural design.
6. A plastic film casting apparatus according to claim 1, characterized in that: the interior of the center column (3) is provided with three transfer pieces (12), the centers of the three transfer pieces (12) respectively correspond to the centers of a through pipe (111) and two through holes (112), the transfer pieces (12) positioned in the middle are connected with the end parts of the air inlet pipe (31), and the transfer pieces (12) positioned at the front side and the rear side are connected with the air outlet pipe (32).
7. A plastic film casting apparatus according to claim 1, characterized in that: the transfer piece (12) comprises an inner circular ring (121) and an outer circular ring (122) which are arranged inside and outside, a connecting pipe (123) is connected between the inner circular ring (121) and the outer circular ring (122), a cavity (1211) and a runner (1221) are respectively formed in the inner circular ring (121) and the outer side of the outer circular ring (122), and the inner wall of the inner circular ring (121) is communicated with a convex block (124) which is convenient to connect with an air inlet pipe (31) and an air outlet pipe (32).
8. A plastic film casting apparatus as claimed in claim 7, wherein: the flow passage (1221) is arranged opposite to the through hole (112), the flow passage (1221) is communicated with the cavity (1211) through the connecting pipe (123), and the connecting pipes (123) are distributed at equal angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311793495.3A CN117445275A (en) | 2023-12-25 | 2023-12-25 | Plastic film casting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311793495.3A CN117445275A (en) | 2023-12-25 | 2023-12-25 | Plastic film casting equipment |
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| Publication Number | Publication Date |
|---|---|
| CN117445275A true CN117445275A (en) | 2024-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311793495.3A Pending CN117445275A (en) | 2023-12-25 | 2023-12-25 | Plastic film casting equipment |
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| Country | Link |
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| CN (1) | CN117445275A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118143485A (en) * | 2024-05-11 | 2024-06-07 | 深圳市三江名创电子科技有限公司 | Laser cutting device for mobile phone protection film |
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2023
- 2023-12-25 CN CN202311793495.3A patent/CN117445275A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118143485A (en) * | 2024-05-11 | 2024-06-07 | 深圳市三江名创电子科技有限公司 | Laser cutting device for mobile phone protection film |
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