CN111907040B

CN111907040B - Extruder for polyvinyl chloride film forming

Info

Publication number: CN111907040B
Application number: CN202010833402.5A
Authority: CN
Inventors: 朱其芳
Original assignee: Daye Qishun Technology Co ltd
Current assignee: Daye Qishun Technology Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2022-11-29
Anticipated expiration: 2040-08-18
Also published as: CN111907040A

Abstract

The invention provides an extruder for forming a polyvinyl chloride film, which comprises: the extruder comprises an extruder body, wherein the extruder body is provided with a machine head, and the machine head is provided with an extrusion port for extruding a thin film; the traction mechanism is arranged at intervals with the machine head and is provided with a traction roller which is arranged in a rotating way, and the film is suitable for being wound on the traction roller; cooling body sets up between aircraft nose and traction roller, cooling body includes casing and cooling piece, be equipped with the cooling clearance that runs through the casing on the casing, the film is worn to locate in the cooling clearance, be equipped with installation space in the casing, be equipped with the cooling board between installation space and the cooling clearance, through making in the external gas enters into the installation space from a plurality of inlet ports, flow from the gas outlet again, thereby improve the purpose of cooling board and liquid and outside air heat transfer through the flow that accelerates the air current, improve heat exchange efficiency, and under the state of blowing at radiator fan not towards the film, also can cool down the film, avoid the film to take place to warp, guarantee product quality.

Description

Extruder for polyvinyl chloride film forming

Technical Field

The invention relates to the technical field of polyvinyl chloride film manufacturing equipment, in particular to an extruder for forming a polyvinyl chloride film.

Background

In the related art, a screw in an extruder rotates to push polyvinyl chloride in a molten state to a machine head, the polyvinyl chloride is extruded by a die on the machine head and then is formed into a film shape, but the film extruded from the machine head is high in temperature and is easy to deform in the moving process, if the film in the state is directly cooled by a fan, air blown by the fan directly blows on the film, and the film in the state is easy to deform because the film is not completely cooled and shaped, so that the quality of a product is affected.

Therefore, it is necessary to develop an extruder for forming a polyvinyl chloride film to solve the above-mentioned problems.

Disclosure of Invention

The invention aims to provide an extruder for forming a polyvinyl chloride film, which is convenient for cooling the film and ensures the product quality.

The above object of the present invention can be achieved by the following technical solutions:

the invention provides an extruder for forming a polyvinyl chloride film, which comprises:

an extruder body having a head with an extrusion port for extruding a film;

the traction mechanism is arranged at a distance from the machine head and is provided with a traction roller which is arranged in a rotating way, and the film is suitable for being wound on the traction roller;

the cooling mechanism is arranged between the machine head and the traction roller and comprises a shell and a cooling part, a cooling gap penetrating through the shell is formed in the shell, the film is arranged in the cooling gap in a penetrating manner, an installation space is formed in the shell, an air outlet communicated with the installation space and a plurality of air inlet holes arranged at intervals are also formed in the shell, a cooling plate is arranged between the installation space and the cooling gap, a heat exchange cavity used for enabling liquid to flow is formed in the cooling plate, and a first inlet joint and a first outlet joint communicated with the heat exchange cavity are formed in the cooling plate;

the cooling part comprises a driving part and a cooling fan, a second inlet connector and a second outlet connector are arranged on the driving part, the second outlet connector is communicated with the first inlet connector, the first outlet connector is communicated with the second inlet connector, the cooling fan is arranged on the outer side of the shell, and an air inlet of the cooling fan is communicated with the air outlet.

In some embodiments of the present invention, the driving part is disposed in the installation space, the driving part includes a water tank and a water pump, the water pump is communicated with the water tank pipe to drive the liquid in the water tank to flow, the second inlet joint is disposed on the water pump, and the second outlet joint is disposed on the water tank.

In some embodiments of the present invention, the driving portion further includes a heat pipe, one end of the heat pipe is communicated with the first outlet connector, and the other end of the heat pipe is communicated with the second inlet connector.

In some embodiments of the invention, the radiating pipe is formed by connecting a plurality of sub-pipes connected end to end.

In some embodiments of the present invention, the air outlet is opposite to the heat dissipation pipe, and the plurality of air inlets are located between the cooling plate and the heat dissipation pipe.

In some embodiments of the present invention, the installation spaces are disposed on two sides of the cooling gap, a driving member is disposed in each of the installation spaces, and the cooling plate is disposed between each of the installation spaces and the cooling gap.

In some embodiments of the invention, two of the cooling plates define the cooling gap.

In some embodiments of the present invention, the air inlet hole is provided on both sides of the housing in a moving direction of the film.

In some embodiments of the present invention, the liquid is a refrigerant.

In some embodiments of the present invention, the gap distance of the temperature-decreasing gaps is 1.5 to 2 times the thickness of the thin film in the thickness direction of the thin film.

The extruder for forming the polyvinyl chloride film has the characteristics and advantages that: the mouth is extruded from the extrusion mouth of aircraft nose to the film, draw through the pivoted traction roller so that the film removes, because cooling body sets up between aircraft nose and traction roller, thereby make the film can remove in the cooling clearance, at this moment, heat diffusion on the film is to in the cooling clearance, heat transfer in the cooling clearance is to the cooling board, because the liquid in the heat transfer intracavity of cooling board flows under the effect of drive division, thereby take away the heat on the cooling board, in order to reach the purpose of taking away the heat on the film that removes in the cooling clearance, and then reach the effect of cooling.

And, because radiator fan sets up the outside at the casing, radiator fan's air intake is linked together with the gas outlet on the casing, thereby under radiator fan's effect, in the external gas enters into the installation space from a plurality of inlet ports, flow from the gas outlet again, thereby improve the purpose of cooling plate and liquid and external air heat transfer through accelerating the flow of air current, improve heat exchange efficiency, and under radiator fan does not blow towards the state that the film was bloied, also can cool down the film, avoid the film to take place to warp, guarantee product quality.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of an extruder according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a cooling mechanism according to an embodiment of the present invention;

FIG. 3 is a schematic perspective view of a cooling mechanism according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a cooling plate according to an embodiment of the invention.

The reference numbers illustrate:

1. an extruder body; 11. a machine head;

2. a film;

3. a traction mechanism; 31. a traction drum;

4. a cooling mechanism; 41. a housing; 411. a cooling gap; 412. an installation space; 413. an air outlet; 414. an air intake; 42. a cooling member; 421. a drive section; 4211. a second inlet fitting; 4212. a second outlet connection; 4213. a water tank; 4214. a water pump; 4215. a radiating pipe; 422. a heat radiation fan; 43. a cooling plate; 431. a heat exchange cavity; 432. a first inlet fitting; 433. a first outlet connection.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

as shown in fig. 1 to 4, the present invention provides an extruder for forming a polyvinyl chloride film 2, comprising: an extruder body 1, wherein the extruder body 1 is provided with a head 11, and the head 11 is provided with an extrusion opening for extruding a film 2; a drawing mechanism 3, the drawing mechanism 3 is arranged at a distance from the machine head 11, the drawing mechanism 3 is provided with a drawing roller 31 which is arranged in a rotating way, and the film 2 is suitable for being wound on the drawing roller 31; the cooling mechanism 4 is arranged between the machine head 11 and the traction roller 31, the cooling mechanism 4 comprises a housing 41 and a cooling part 42, a cooling gap 411 penetrating through the housing 41 is arranged on the housing 41, the film 2 is arranged in the cooling gap 411 in a penetrating manner, an installation space 412 is arranged in the housing 41, an air outlet 413 communicated with the installation space 412 and a plurality of air inlet holes 414 arranged at intervals are further arranged on the housing 41, a cooling plate 43 is arranged between the installation space 412 and the cooling gap 411, a heat exchange cavity 431 used for enabling liquid to flow is arranged in the cooling plate 43, and a first inlet joint 432 and a first outlet joint 433 communicated with the heat exchange cavity 431 are arranged on the cooling plate 43; the cooling member 42 includes a driving portion 421 and a heat dissipation fan 422, the driving portion 421 is provided with a second inlet joint 4211 and a second outlet joint 4212, the second outlet joint 4212 is communicated with the first inlet joint 432, the first outlet joint 433 is communicated with the second inlet joint 4211, the heat dissipation fan 422 is disposed on the outer side of the casing 41, and an air inlet of the heat dissipation fan 422 is communicated with the air outlet 413.

It can be understood that, when the film 2 is extruded from the extrusion opening of the head 11, the film 2 is moved by the traction of the rotating traction roller 31, because the cooling mechanism 4 is arranged between the head 11 and the traction roller 31, the film 2 can move in the cooling gap 411, at this time, the heat on the film 2 is diffused into the cooling gap 411, the heat in the cooling gap 411 is transferred to the cooling plate 43, because the liquid in the heat exchange cavity 431 of the cooling plate 43 flows under the action of the driving part 421, the heat on the cooling plate 43 is taken away, so as to achieve the purpose of taking away the heat on the film 2 moving in the cooling gap 411, and further achieve the effect of cooling.

And, because radiator fan 422 sets up the outside at casing 41, radiator fan 422's air intake is linked together with the gas outlet 413 on the casing 41, thereby under radiator fan 422's effect, ambient gas enters into installation space 412 from a plurality of inlet ports 414 in, flow from gas outlet 413 again, thereby improve the purpose of cooling plate 43 and liquid and outside air heat transfer through accelerating the flow of air current, improve heat exchange efficiency, and under the state of blowing at radiator fan 422 towards film 2 not, also can cool down film 2, avoid film 2 to take place to warp, guarantee product quality.

The second embodiment:

the present embodiment is different from the above embodiments;

as shown in fig. 1 to 4, in some embodiments of the present invention, the driving part 421 is disposed in the installation space 412, the driving part 421 includes a water tank 4213 and a water pump 4214, the water pump 4214 and the water tank 4213 are in pipe communication to drive the liquid in the water tank 4213 to flow, the second inlet joint 4211 is disposed on the water pump 4214, and the second outlet joint 4212 is disposed on the water tank 4213. Therefore, the flow speed of the liquid is increased by the water pump 4214, and the heat exchange efficiency is improved.

In some embodiments of the present invention, the driving portion 421 further includes a heat pipe 4215, one end of the heat pipe 4215 is communicated with the first outlet joint 433, and the other end of the heat pipe 4215 is communicated with the second inlet joint 4211. Therefore, the flow path of the liquid is increased, and the liquid can be better radiated.

In some embodiments of the present invention, the heat dissipation pipe 4215 is composed of a plurality of sub-pipes connected end to end. Thereby, the flow path of the liquid is further increased, and the liquid can be better radiated.

In some embodiments of the present invention, the air outlet 413 is disposed opposite to the heat dissipation pipe 4215, and the plurality of air inlet holes 414 are located between the cooling plate 43 and the heat dissipation pipe 4215.

Example three:

the present embodiment is different from the above embodiments;

as shown in fig. 1 to 4, in some embodiments of the present invention, the installation spaces 412 are disposed on both sides of the cooling gap 411, a driving member is disposed in each installation space 412, and the cooling plate 43 is disposed between each installation space 412 and the cooling gap 411. Thereby, the effect of cooling the film 2 in the cooling gap 411 is improved by the two cooling plates 43.

In some embodiments of the present invention, two cooling plates 43 define the cooling gap 411.

In some embodiments of the present invention, the air inlet holes 414 are provided on both sides of the housing 41 in the moving direction of the film 2. From this, avoid the outside air when getting into the air inlet through the route that film 2 passed through, avoid flowing air current and film 2 contact, avoid film 2 to take place to warp when not cooling the design, guarantee product quality.

In some embodiments of the present invention, the liquid is a refrigerant.

In some embodiments of the present invention, the distance between the temperature-reducing gaps 411 is 1.5 to 2 times the thickness of the thin film 2 in the thickness direction of the thin film 2. Thereby, the film 2 is prevented from contacting the inner wall of the cooling gap 411, and the film 2 is prevented from sticking to the inner wall of the cooling gap 411.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An extruder for forming a polyvinyl chloride film, comprising:

an extruder body having a head with an extrusion port for extruding a film;

the cooling part comprises a driving part and a cooling fan, a second inlet joint and a second outlet joint are arranged on the driving part, the second outlet joint is communicated with the first inlet joint, the first outlet joint is communicated with the second inlet joint, the cooling fan is arranged on the outer side of the shell, an air inlet of the cooling fan is communicated with the air outlet, and the film is cooled under the condition that the cooling fan does not blow air towards the film, so that the film is prevented from deforming, and the product quality is ensured;

the driving part is arranged in the installation space and comprises a water tank and a water pump, the water pump is communicated with a water tank pipeline to drive the liquid in the water tank to flow, the second inlet joint is arranged on the water pump, and the second outlet joint is arranged on the water tank;

the driving part further comprises a radiating pipe, one end of the radiating pipe is communicated with the first outlet connector, and the other end of the radiating pipe is communicated with the second inlet connector.

2. The extruder for forming a polyvinyl chloride film according to claim 1, wherein said heat radiating pipe is formed by connecting a plurality of sub-pipes connected end to end.

3. The extruder as claimed in claim 1, wherein said air outlet is disposed opposite to said heat dissipating pipe, and a plurality of said air inlet holes are formed between said cooling plate and said heat dissipating pipe.

4. The extruder as claimed in claim 1, wherein the installation spaces are provided on both sides of the cooling gap, each of the installation spaces has a driving member therein, and the cooling plate is provided between each of the installation spaces and the cooling gap.

5. The extruder for forming a polyvinyl chloride film according to claim 4, wherein two of said cooling plates define said cooling gap.

6. The extruder for forming a polyvinyl chloride film according to claim 1, wherein said air inlet hole is provided on both sides of said housing in a moving direction of said film.

7. The extruder for forming a polyvinyl chloride film according to claim 1, wherein the liquid is a refrigerant.

8. The extruder for forming a polyvinyl chloride film according to claim 1, wherein the interval of said temperature-decreasing gaps is 1.5 to 2 times the thickness of said film in the thickness direction of said film.