CN111516226B - Synthetic membrane plastify film forming device - Google Patents
Synthetic membrane plastify film forming device Download PDFInfo
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- CN111516226B CN111516226B CN202010363159.5A CN202010363159A CN111516226B CN 111516226 B CN111516226 B CN 111516226B CN 202010363159 A CN202010363159 A CN 202010363159A CN 111516226 B CN111516226 B CN 111516226B
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- extrusion
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- banburying
- screw
- screw extruder
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
- B29B7/20—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/58—Details
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a synthetic film plasticizing and film forming device, which comprises a double-screw extruder for banburying and extruding raw materials and a conveying device for filtering and conveying finished materials, wherein a discharge hole of the double-screw extruder is connected with a feed inlet of the conveying device. After the structure is adopted, the raw materials are firstly sent into the double-screw extruder, two banburying extrusion screws are arranged in the double-screw extruder, each banburying extrusion screw is provided with a banburying section and an extrusion section, after the raw materials are conveyed to the double-screw extruder, the banburying sections are used for fully carrying out primary high-temperature shearing and stirring processing on the raw materials, then the extrusion sections are used for carrying out secondary high-temperature processing on the raw materials, and then the finished materials are extruded to the conveying device for secondary filtering and conveyed to the die for film forming.
Description
Technical Field
The invention relates to the field of synthetic film production equipment, in particular to a synthetic film plasticizing and forming device.
Background
The synthetic membrane is a permeable membrane with separation function made of organic matter and inorganic matter separately or compositely. The existing production line of synthetic film comprises an internal mixer, a double-screw extruder and a forming die which are connected in sequence. During production, the mixed raw materials are added into an internal mixer, the internal mixer carries out primary heating and mixing on the raw materials, the semi-finished materials after internal mixing are conveyed to a double-screw extruder for secondary heating processing, and finally the finished materials are extruded to a forming die by the double-screw extruder for film forming.
Although the above-described synthetic film production line flow is quite general, in actual production, the following problems are found: firstly, in the process of conveying the semi-finished materials from the internal mixer to the double-screw extruder, a large amount of semi-finished materials are adhered to a feeding pipeline between the internal mixer and the double-screw extruder, so that raw materials are lost and wasted, and the production cost is increased. Secondly, the raw materials need to be heated and formed for the second time by adopting an internal mixer and a double-screw extruder, so that the two devices of the internal mixer and the double-screw extruder need to be used simultaneously, and the occupied space of a production line and the consumption of electric energy are increased. Thirdly, the extrusion capacity of the internal mixer and the twin-screw extruder is strictly regulated during production, the phenomenon that the internal part of the pipeline or the twin-screw extruder is blocked due to overlarge extrusion capacity of the internal mixer is prevented, and the operation is complicated.
In view of the above, the applicant has made an intensive study to solve the above problems and has made the present invention.
Disclosure of Invention
The invention mainly aims to provide a synthetic film plasticizing and film forming device, which improves the traditional secondary processing molding into one-step processing molding by adopting a double-screw extruder, and greatly reduces the loss of raw materials and cost.
In order to achieve the above purpose, the solution of the invention is:
a synthetic membrane plasticizing and film forming device comprises a double-screw extruder for banburying extrusion of raw materials, a conveying device for filtering and conveying finished materials, and a forming die for plasticizing and forming the raw materials; and the discharge hole of the double-screw extruder is connected with the feed inlet of the conveying device, and the discharge hole of the conveying device is connected with the feed inlet of the forming die.
Furthermore, the double-screw extruder is provided with a molding cavity, and two banburying extrusion screws horizontally arranged along the length direction of the molding cavity are arranged in the molding cavity; the molding cavity comprises an internal mixing cavity and an extrusion cavity; the banburying extrusion screw comprises a banburying section and an extrusion section, wherein the banburying section is positioned in a banburying cavity, and the extrusion section is positioned in an extrusion cavity.
Further, the banburying extrusion screw comprises a plurality of screw single body sections which are connected in sequence.
Furthermore, the single screw body sections are detachably connected.
Furthermore, the screw rod single body sections are connected through splines, an inner spline is arranged on the end face of one side of each screw rod single body section, and an outer spline is arranged on the end face of the other side of each screw rod single body section.
Further, the banburying extrusion screw is divided into a first banburying extrusion screw and a second banburying extrusion screw, the first banburying extrusion screw comprises a first motor, a first banburying section and a first extrusion section, the first motor drives the first banburying section to rotate, the first banburying section is fixedly connected with the first extrusion section, and a first gear is arranged between the first banburying section and the first extrusion section; the second banburying extrusion screw comprises a second motor, a second banburying section and a second extrusion section, the second motor drives the second banburying section to rotate, the second banburying section is rotatably connected with the second extrusion section, and the second extrusion section is provided with a second gear which is rotatably meshed with the first gear.
Furthermore, the second banburying section is provided with a connecting shaft protruding outwards along the axis direction, the second extrusion section is provided with a connecting hole, and the connecting shaft is inserted into the connecting hole and connected in a rotating mode.
Further, the conveying device comprises a first filtering mechanism, a pressure stabilizing device and a second filtering mechanism which are sequentially connected, a feed port of the first filtering mechanism is connected with a discharge port of the double-screw extruder, and a discharge port of the second filtering mechanism is connected with a feed port of the die.
Further, the first filtering mechanism comprises a first filter and a first metering pump which are connected; the second filtering mechanism comprises a second filter and a second metering pump which are connected.
Further, the extrusion device is a single screw extruder.
After the structure is adopted, the working process of the invention is as follows: the method comprises the following steps of firstly conveying raw materials into a double-screw extruder, arranging two banburying extrusion screws in the double-screw extruder, wherein the banburying extrusion screws are provided with a banburying section and an extrusion section, after the raw materials are conveyed to the double-screw extruder, firstly carrying out sufficient primary high-temperature shearing and stirring processing on the raw materials through the banburying section, then carrying out secondary high-temperature processing on the raw materials through the extrusion section, and then extruding the finished materials to a conveying device for secondary filtering and conveying to a mold for film forming.
Compared with the prior art, beneficial effect lies in:
one is as follows: the invention improves the traditional secondary processing molding into one-time processing molding by adopting a double-screw extruder, reduces the equipment number of a production line, saves the occupied area, greatly reduces the equipment energy consumption and saves the production cost.
And secondly, the twin-screw extruder is provided with an internal mixing extrusion screw in the molding cavity, the internal mixing extrusion screw is provided with an internal mixing section and an extrusion section, the raw materials are subjected to secondary high-temperature extrusion molding directly through the extrusion section after being fully internally mixed through the internal mixing section in the molding cavity, processing equipment does not need to be replaced, the raw materials are prevented from being subjected to material loss in the process of transportation and replacement of the equipment, and the production cost is saved.
And thirdly, the conveying device is provided with a first filtering mechanism and a second filtering mechanism, the finished materials can be fully filtered, the quality of the finished materials is improved, meanwhile, a pressure stabilizing device is further arranged in the conveying device, the pressure stability of the feed inlet of the forming die can be maintained, and the forming quality of the synthetic membrane is further improved.
Drawings
FIG. 1 is a simplified flow chart of the present invention.
FIG. 2 is a partial sectional view of the internal structure of the twin-screw extruder.
FIG. 3 is a perspective view of the screw structure of another embodiment of the twin-screw extruder.
In the figure:
a double screw extruder-1; a molding cavity-11; mixing cavity-111; extrusion chamber-112;
banburying extrusion screw-12; banburying section-121; extrusion section-122; screw single body section-123;
an internal spline-124; external spline-125; a conveying device-2; a first filter-211;
a first metering pump-212; a voltage stabilizer-22; a second filter-231;
a second metering pump-232; a forming die-3; a first banburying extrusion screw rod-4;
a first motor-41; a first banburying section-42; first extrusion section-43; a first gear-44;
a second banburying extrusion screw rod-5; a second motor-51; a second banburying section-52;
connecting shaft-521; a second extrusion section-53; a second gear-54.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
As shown in fig. 1-3, a synthetic film plasticizing and film forming apparatus includes a twin-screw extruder 1 for banburying and extruding raw materials, a conveying device 2 for filtering and conveying the materials, and a forming mold 3 for plasticizing and forming the raw materials, wherein a discharge port of the twin-screw extruder 1 is connected with a feed port of the conveying device 2, and a discharge port of the conveying device 2 is connected with a feed port of the forming mold 3.
After adopting above-mentioned structure, carry the raw materials to in the twin-screw extruder 1, the twin-screw extruder 1 carries out banburying shaping and extrusion moulding to the raw materials simultaneously, later carries the finished product material that will process to forming die 3 through conveyor 2 and carries out the film shaping. Compared with the prior art, the invention improves the traditional secondary processing molding into one-time processing molding by adopting the double-screw extruder 1, reduces the equipment number of the production line, saves the occupied area, greatly reduces the equipment energy consumption and saves the production cost.
Preferably, the twin-screw extruder 1 has a molding cavity 11, two banburying extrusion screws 12 horizontally arranged along the length direction of the molding cavity 11 are arranged in the molding cavity 11, the molding cavity 11 comprises a banburying cavity 111 and an extrusion cavity 112, and the banburying extrusion screws 12 comprise a banburying section 121 inside the banburying cavity 111 and an extrusion section 122 inside the extrusion cavity 112.
After adopting above-mentioned structure, the raw materials directly carries out secondary high temperature extrusion moulding by extruding section 122 after fully banburying through banburying section 121 in shaping chamber 11, need not to change processing equipment, avoids the raw materials to take place the material loss in transportation, change equipment process, saves manufacturing cost.
Preferably, the banburying extrusion screw 12 comprises a plurality of screw unit sections 123 connected in sequence, after the structure is adopted, the banburying screw thread for shearing and banburying the raw materials can be arranged on the screw unit section 123, or the extrusion screw thread for extrusion molding of the raw materials is arranged, during banburying and extrusion time periods required by the raw materials with different proportions are different during raw material processing, therefore, the screw unit sections 123 can be spliced into each other, the banburying sections 121 and the extrusion sections 122 with different lengths are formed, so as to adjust the banburying time and the extrusion time periods of the banburying extrusion screw 12, the application range of the banburying extrusion screw 12 is wider, and the applicability is stronger.
Preferably, the screw body sections 123 are detachably connected to each other.
More preferably, the screw unit sections 123 are connected through splines, one end face of each screw unit section 123 is provided with the internal spline 124, and the other end face of each screw unit section 123 is provided with the external spline 125, so that the screw unit sections 123 can be detached more conveniently, and the screw unit sections 123 are aligned better and have stronger guidance.
During banburying processing, the two banburying extrusion screws 12 need to rotate in the same needle direction, so that the banburying sections 121 of the two banburying extrusion screws 12 rotate in opposite directions at the intersection, the shearing force and the shearing strength of the banburying threads are enhanced, and the shearing and banburying effects on the raw materials are improved. During extrusion processing, the extrusion effect is affected by excessive high temperature, energy consumption and low efficiency in the extrusion cavity 112 caused by too strong shearing strength and too large resistance, so that the extrusion sections 122 of the two banburying extrusion screws 12 are required to rotate in different clockwise directions and move in the same direction at the intersection of the two screws, thereby greatly reducing the mutual resistance and reducing the shearing force of the extrusion sections 122. In order to solve the problem, as another embodiment of the present invention, the banburying extrusion screw 12 is divided into a first banburying extrusion screw 4 and a second banburying extrusion screw 5, the first banburying extrusion screw 4 includes a first motor 41, a first banburying section 42 and a first extrusion section 43, the first motor 41 drives the first banburying section 42 to rotate, the first banburying section 42 is fixedly connected with the first extrusion section 43, and a first gear 44 is arranged between the first banburying section 42 and the first extrusion section 43; the second mixing extrusion screw 5 comprises a second motor 51, a second mixing section 52 and a second extrusion section 53, the second motor 51 drives the second mixing section 52 to rotate, the second mixing section 52 is rotatably connected with the second extrusion section 53, and the second extrusion section 53 is provided with a second gear 54 which is rotatably meshed with the first gear 44.
After the structure is adopted, during processing, the first motor 41 and the second motor 51 respectively drive the first mixing section 42 and the second mixing section 52 to rotate clockwise, the first mixing section 42 rotates to drive the first gear 44 and the first extrusion section 43 to rotate clockwise, and the first gear 44 is meshed with the second gear 54, so that the second gear 54 rotates counterclockwise and drives the second extrusion section 53 to rotate counterclockwise. Therefore, the first mixing section 42 and the second mixing section 52 rotate in the same direction at the same time, so that the shearing force of the mixing section 121 is increased, the shearing and mixing effects are improved, and meanwhile, the first extruding section 43 and the second extruding section 53 rotate in opposite directions, so that the shearing force is reduced, and the extruding effect is prevented from being impressed due to the overhigh temperature of the extruding section 122.
More preferably, the second mixing section 52 has a connecting shaft 521 protruding outwards along the axial direction, and the second extruding section 53 has a connecting hole, and the connecting shaft 521 is inserted into the connecting hole to be rotatably connected. This structure enhances the coaxiality and the connection strength of the second mixing section 52 and the second extruding section 53, and simultaneously can ensure that the second mixing section 52 and the second extruding section 53 rotate in opposite directions when in work.
Preferably, the conveying device 2 comprises a first filtering mechanism, a pressure stabilizer 22 and a second filtering mechanism which are connected in sequence, wherein a feed port of the first filtering mechanism is connected with a discharge port of the double-screw extruder 1, and a discharge port of the second filtering mechanism is connected with a feed port of the forming die 3.
After adopting above-mentioned structure, conveyor 2 has first filtering mechanism and second filtering mechanism, can fully filter the finished product, improves the finished product quality, still is equipped with pressure stabilizer 22 in conveyor 2 simultaneously, can maintain the pressure stability of 3 pan inlets departments of forming die, further improves the shaping quality of synthetic membrane.
Preferably, the first filtering mechanism includes a first filter 211 and a first metering pump 212 connected to each other, and the first metering pump 212 can strictly control the amount of raw material delivered to the pressure stabilizer 22, so as to avoid the phenomenon that the raw material flows too much, which causes the raw material overflow of the hopper of the pressure stabilizer 22, or the raw material blockage inside the pressure stabilizer 22. The second filtering mechanism comprises a second filter 231 and a second metering pump 232 which are connected, and the second metering pump 232 can strictly control the raw material conveying amount of the pressure stabilizing device 22, so that the film forming quality is improved.
Preferably, the pressure stabilizer 22 is a single screw extruder, so that the conveying is more stable, and the single screw extruder has a better pressure maintaining effect.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.
Claims (9)
1. A synthetic membrane plasticizing and film forming device is characterized by comprising a double-screw extruder for banburying and extruding raw materials, a conveying device for filtering and conveying finished materials, and a forming die for plasticizing and forming the raw materials, wherein a discharge hole of the double-screw extruder is connected with a feed inlet of the conveying device, and a discharge hole of the conveying device is connected with a feed inlet of the forming die; the double-screw extruder is provided with a molding cavity, and two banburying extrusion screws horizontally arranged along the length direction of the molding cavity are arranged in the molding cavity;
the internal mixing extrusion screw is divided into a first internal mixing extrusion screw and a second internal mixing extrusion screw, the first internal mixing extrusion screw comprises a first motor, a first internal mixing section and a first extrusion section, the first motor drives the first internal mixing section to rotate, the first internal mixing section is fixedly connected with the first extrusion section, and a first gear is arranged between the first internal mixing section and the first extrusion section; the second banburying extrusion screw comprises a second motor, a second banburying section and a second extrusion section, the second motor drives the second banburying section to rotate, the second banburying section is rotatably connected with the second extrusion section, and the second extrusion section is provided with a second gear which is rotatably meshed with the first gear.
2. The synthetic film plasticizing and forming apparatus of claim 1 wherein said forming chamber comprises an internal mixing chamber and an extrusion chamber; the banburying extrusion screw comprises a banburying section and an extrusion section, wherein the banburying section is positioned in a banburying cavity, and the extrusion section is positioned in an extrusion cavity.
3. A synthetic film plasticizing and film forming apparatus as described in claim 2 wherein said banbury extruder screw includes a plurality of screw individual segments connected in series.
4. A synthetic film plasticizing film forming apparatus as described in claim 3 wherein said screw individual segments are removably connected.
5. A synthetic film plasticizing and forming apparatus as claimed in claim 4, wherein said screw single body segments are connected by splines, one end surface of said screw single body segment is provided with internal splines and the other end surface is provided with external splines.
6. The synthetic film plasticizing and forming apparatus of claim 1 wherein said second mixing section has a connecting shaft projecting outwardly in the axial direction, said second extruding section has a connecting hole, said connecting shaft is inserted into said connecting hole for rotational connection.
7. The synthetic film plasticizing and forming device of claim 1, wherein the conveying device comprises a first filtering mechanism, a pressure stabilizer and a second filtering mechanism which are connected in sequence, wherein the feed inlet of the first filtering mechanism is connected with the discharge outlet of the twin-screw extruder, and the discharge outlet of the second filtering mechanism is connected with the feed inlet of the die.
8. A synthetic film plasticizing film forming apparatus as described in claim 7 wherein said first filtering means includes a first filter and a first metering pump connected; the second filtering mechanism comprises a second filter and a second metering pump which are connected.
9. A synthetic film plasticizing and forming apparatus as described in claim 8 wherein said pressure stabilizer is a single screw extruder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010363159.5A CN111516226B (en) | 2020-04-30 | 2020-04-30 | Synthetic membrane plastify film forming device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010363159.5A CN111516226B (en) | 2020-04-30 | 2020-04-30 | Synthetic membrane plastify film forming device |
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| CN111516226A CN111516226A (en) | 2020-08-11 |
| CN111516226B true CN111516226B (en) | 2021-11-12 |
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| CN112238620A (en) * | 2020-09-25 | 2021-01-19 | 福建琦峰科技有限公司 | One-step breathable film and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN111516226A (en) | 2020-08-11 |
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