CN215703869U - Plastic film extrusion molding machine - Google Patents
Plastic film extrusion molding machine Download PDFInfo
- Publication number
- CN215703869U CN215703869U CN202121994136.0U CN202121994136U CN215703869U CN 215703869 U CN215703869 U CN 215703869U CN 202121994136 U CN202121994136 U CN 202121994136U CN 215703869 U CN215703869 U CN 215703869U
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- Prior art keywords
- extrusion
- degassing
- fixedly connected
- plastic film
- cavity
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- 238000001125 extrusion Methods 0.000 title claims abstract description 94
- 229920006255 plastic film Polymers 0.000 title claims abstract description 32
- 239000002985 plastic film Substances 0.000 title claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 56
- 238000007493 shaping process Methods 0.000 claims abstract description 18
- 238000007872 degassing Methods 0.000 claims description 73
- 238000002844 melting Methods 0.000 claims description 21
- 230000008018 melting Effects 0.000 claims description 21
- 238000007599 discharging Methods 0.000 claims description 20
- 238000000465 moulding Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 abstract description 32
- 229920003023 plastic Polymers 0.000 abstract description 32
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000011295 pitch Substances 0.000 description 8
- 238000000605 extraction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 235000013305 food Nutrition 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- -1 polyethylene Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003000 extruded plastic Substances 0.000 description 1
- 235000013410 fast food Nutrition 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a plastic film extrusion molding machine, which relates to the field of plastic films and comprises the following components: the supporting legs are fixedly connected to two sides of the bottom of the rack; the feeding mechanism is fixedly connected to the left side of the rack through a bracket; the extruding mechanism is fixedly connected to the middle part of the rack through a bracket; the extrusion die is fixedly connected to the right end of the rack through a support, and the left side of the extrusion die is fixedly connected with the right side of the extrusion mechanism; the plastic film stretching and shaping device has the advantages that the exhaust device is arranged in the feeding device, so that gas contained in molten plastic can be greatly reduced in the feeding stage, the quality of a plastic film in subsequent stretching processing is guaranteed, and the production yield is improved.
Description
Technical Field
The utility model relates to the field of plastic films, in particular to a plastic film extrusion molding machine.
Background
Plastic molds are films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins, used for packaging, and used as a film coating layer. Plastic packages and plastic package products have a larger share in the market, and particularly, composite plastic flexible packages are widely applied to the fields of food, medicine, chemical industry and the like, wherein the proportion of the plastic packages is the largest, such as beverage packages, quick-frozen food packages, steamed and cooked food packages, fast food packages and the like, and the plastic packages and the plastic package products bring great convenience to the life of people.
The extrusion molding is a processing mode of forming a continuous section with a constant section by forcing a high polymer material melted by heating to pass through a machine head die under the pushing of the repression by using the extrusion action of a screw or a plunger.
When the existing plastic film extruder produces the extruded plastic film, the air in the molten plastic is removed by an effective degassing device when the plastic is fed, so that the molten plastic contains a large amount of air, the plastic film is broken in the subsequent stretching process after the plastic film is extruded and formed, and the production yield of the plastic film is reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the technical scheme provides a plastic film extrusion molding machine, which solves the problem that when the existing plastic film extruder provided in the background art carries out plastic film extrusion production, air in molten plastic is removed without an effective degassing device when plastic feeding is carried out, so that the molten plastic contains a large amount of air, the plastic film is broken in a subsequent stretching process after extrusion molding, and the production yield of the plastic film is reduced.
In order to achieve the above purposes, the technical scheme adopted by the utility model is as follows:
a plastic film extrusion molding machine is characterized by comprising:
the supporting legs are fixedly connected to two sides of the bottom of the rack;
the feeding mechanism is fixedly connected to the left side of the rack through a support, the feeding mechanism comprises a feeding melting device, a degassing device and a discharging mechanism, the feeding melting device is fixedly connected to the left side of the upper end of the degassing device, the discharging mechanism is fixedly connected to the right side of the degassing device, the degassing device comprises a degassing motor, a degassing cavity and a degassing screw rod, the degassing motor is fixedly connected to the left side of the degassing cavity, the output end of the degassing motor is fixedly connected with the degassing screw rod, the degassing screw rod is arranged in the degassing cavity, the degassing screw rod is sequentially provided with an extrusion part, a loosening part and an extrusion part from left to right, the screw pitch of the loosening part is larger than that of the extrusion part and that of the extrusion part, the screw pitch of the extrusion part is larger than that of the extrusion part, and the degassing cavity is welded with a degassing block at a position corresponding to the loosening part and the extrusion part, an air pumping channel is formed in the air pumping block and is communicated with the inside of the degassing cavity;
the extruding mechanism is fixedly connected to the middle part of the rack through a support, and the interior of the discharging mechanism is communicated with the interior of the extruding mechanism;
the extrusion die is fixedly connected to the right end of the rack through a support, and the left side of the extrusion die is fixedly connected with the right side of the extrusion mechanism;
the shaping mechanism is arranged on the right side of the frame and comprises a support frame and a shaping roller, the shaping roller is rotatably connected to the top of the support frame, and the shaping roller is arranged below the extrusion die.
Preferably, reinforced melting device includes loading hopper, melting chamber and play hopper, loading hopper fixed connection is in melting chamber upper end, go out hopper fixed connection at melting chamber lower extreme, it communicates with gas removal equipment to go out the hopper.
Preferably, the discharging mechanism comprises a discharging cavity and a discharging pipe, the discharging cavity is communicated with the inside of the degassing device, and the discharging pipe is communicated with the inside of the extruding mechanism.
Preferably, the extruding mechanism comprises an extruding cavity, an extruding screw and an extruding motor, the extruding motor is fixedly connected to the left side of the extruding cavity, the output end of the extruding motor is fixedly connected with the extruding screw, and the extruding screw is located inside the extruding cavity.
Preferably, the extrusion die comprises a forming part and a die head, and the die head is fixedly connected to the right side of the lower end of the forming part.
Preferably, there are two shaping mechanisms, and the middle surface between the two shaping mechanisms is in the same plane with the extrusion opening of the die head.
Compared with the prior art, the utility model has the advantages that:
1) the feeding melting device is internally provided with a degassing device, the degassing device is provided with a degassing screw rod for extruding and degassing molten plastic, the molten plastic is firstly extruded by the degassing screw rod in a re-extrusion part and is subjected to primary degassing, then the molten plastic is conveyed to a relaxation part along with the rotation of the degassing screw rod, the molten plastic subjected to primary extrusion is relaxed in the relaxation part with a larger screw pitch, so that gas which is not discharged during primary extrusion is uniformly dispersed in the molten plastic, the molten plastic subjected to primary extrusion enters the extrusion part when being relaxed, the screw pitch is reduced to perform secondary extrusion on the molten plastic, secondary degassing is performed, and the gas content in the molten plastic is greatly reduced through twice degassing;
2) the shaping mechanism is arranged under the extrusion die head, so that the surface can be leveled after the plastic die is extruded, the surface unevenness caused by the reduction of the plasticity of the plastic film after the temperature is reduced is avoided, and the quality of the plastic film is improved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a partial cross-sectional view of the front of the present invention;
fig. 4 is a schematic view of the internal structure of the feeding mechanism of the present invention.
The reference numbers in the figures are:
1. a frame; 101. supporting legs; 2. a feeding mechanism; 201. a charging and melting device; 2011. a hopper; 2012. a melting chamber; 2013. a discharge hopper; 202. a degassing device; 2021. a degassing motor; 2022. a degassing cavity; 2023. degassing the screw rod; 2024. an air pumping block; 2025. an air extraction channel; 203. a discharge mechanism; 2031. a discharge chamber; 2032. a discharge pipe; 3. an extrusion mechanism; 301. an extrusion chamber; 302. extruding a screw; 303. an extrusion motor; 4. extruding the mould; 401. a molding section; 402. a die head; 5. a shaping mechanism; 501. a support frame; 502. and (7) shaping the roller.
Detailed Description
The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
Referring to fig. 1 to 3, a plastic film extrusion molding machine, comprising:
the supporting legs 101 are fixedly connected to two sides of the bottom of the frame 1;
the feeding mechanism 2 is fixedly connected to the left side of the rack 1 through a support, the feeding mechanism 2 comprises a feeding melting device 201, a degassing device 202 and a discharging mechanism 203, the feeding melting device 201 is fixedly connected to the left side of the upper end of the degassing device 202, and the discharging mechanism 203 is fixedly connected to the right side of the degassing device 202;
the extrusion mechanism 3 is fixedly connected to the middle of the rack 1 through a support, the inside of the discharging mechanism 203 is communicated with the inside of the extrusion mechanism 3, the extrusion mechanism 3 comprises an extrusion cavity 301, an extrusion screw 302 and an extrusion motor 303, the extrusion motor 303 is fixedly connected to the left side of the extrusion cavity 301, the output end of the extrusion motor 303 is fixedly connected with the extrusion screw 302, and the extrusion screw 302 is positioned inside the extrusion cavity 301;
the extrusion die 4 is fixedly connected to the right end of the rack 1 through a support, the left side of the extrusion die 4 is fixedly connected with the right side of the extrusion mechanism 3, the extrusion die 4 comprises a forming part 401 and a die head 402, and the die head 402 is fixedly connected to the right side of the lower end of the forming part 401;
The degassing device 202 comprises a degassing motor 2021, a degassing cavity 2022 and a degassing screw 2023, the degassing motor 2021 is fixedly connected to the left side of the degassing cavity 2022, the output end of the degassing motor 2021 is fixedly connected with the degassing screw 2023, the degassing screw 2023 is arranged in the degassing cavity 2022, the degassing screw 2023 is sequentially provided with an extrusion part, a slack part and an extrusion part from left to right, the screw pitch of the slack part is greater than the screw pitches of the extrusion part and the extrusion part, the degassing cavity 2022 is welded with an air extraction block 2024 at the position corresponding to the slack part and the extrusion part, the air extraction channel 2025 is arranged in the air extraction block 2024 and is communicated with the inside of the degassing cavity 2022, the feeding melting device 201 comprises a feeding hopper 2011, a melting cavity 2012 and a discharging hopper 2013, the feeding hopper 2011 is fixedly connected to the upper end of the melting cavity 2012, the discharging hopper 2013 is fixedly connected to the lower end 2012 of the melting cavity, and the discharging hopper 2013 is communicated with the degassing device 202, discharge mechanism 203 includes row material chamber 2031 and row material pipe 2032, row material chamber 2031 and the inside intercommunication of degassing unit 202, row material pipe 2032 and the inside intercommunication of extrusion mechanism 3, degassing unit 202 has degassing screw 2023 to extrude the degasification to molten plastic, molten plastic extrudes the portion at first again and carries out preliminary extrusion to it by degassing screw 2023, carry out a degasification, later carry molten plastic to lax portion along with degassing screw 2023's rotation, molten plastic after once extrudeing obtains relaxing at the great lax portion of pitch and makes originally once extrude the gas that does not discharge and obtain homodisperse in molten plastic, the molten plastic after lax when gets into the portion of extruding, here pitch reduces and carries out the secondary extrusion to molten plastic, carry out the secondary exhaust, make the gas content in the molten plastic reduce by a wide margin through twice exhaust.
In summary, the present invention has the advantages that the exhaust device is arranged in the feeding device, so that the gas contained in the molten plastic can be greatly reduced in the feeding stage, thereby ensuring the quality of the plastic film in the subsequent stretching process and improving the production yield.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. A plastic film extrusion molding machine is characterized by comprising:
the device comprises a rack (1), wherein supporting legs (101) are fixedly connected to two sides of the bottom of the rack (1);
the feeding mechanism (2) is fixedly connected to the left side of the rack (1) through a support, the feeding mechanism (2) comprises a feeding melting device (201), a degassing device (202) and a discharging mechanism (203), the feeding melting device (201) is fixedly connected to the left side of the upper end of the degassing device (202), the discharging mechanism (203) is fixedly connected to the right side of the degassing device (202), the degassing device (202) comprises a degassing motor (2021), a degassing cavity (2022) and a degassing screw rod (2023), the degassing motor (2021) is fixedly connected to the left side of the degassing cavity (2022), the output end of the degassing motor (2021) is fixedly connected with the degassing screw rod (2023), the degassing screw rod (2023) is arranged inside the degassing cavity (2022), and the degassing screw rod (2023) is sequentially provided with an extrusion part, a relaxation part and an extrusion part from left to right, the screw pitch of the slack part is larger than that of the extrusion part and that of the extrusion part, the screw pitch of the extrusion part is larger than that of the extrusion part, an air exhaust block (2024) is welded at a position of the air exhaust cavity (2022) corresponding to the slack part and the extrusion part, an air exhaust channel (2025) is formed inside the air exhaust block (2024), and the air exhaust channel (2025) is communicated with the inside of the air exhaust cavity (2022);
the extruding mechanism (3) is fixedly connected to the middle part of the rack (1) through a support, and the inside of the discharging mechanism (203) is communicated with the inside of the extruding mechanism (3);
the extrusion die (4) is fixedly connected to the right end of the rack (1) through a support, and the left side of the extrusion die (4) is fixedly connected with the right side of the extrusion mechanism (3);
shaping mechanism (5), shaping mechanism (5) set up in frame (1) right side, shaping mechanism (5) are including support frame (501) and shaping roller (502), shaping roller (502) rotate to be connected in support frame (501) top, shaping roller (502) set up the below at extrusion tooling (4).
2. The plastic film extrusion molding machine according to claim 1, wherein the feeding and melting device (201) comprises a feeding hopper (2011), a melting chamber (2012) and a discharging hopper (2013), the feeding hopper (2011) is fixedly connected to the upper end of the melting chamber (2012), the discharging hopper (2013) is fixedly connected to the lower end of the melting chamber (2012), and the discharging hopper (2013) is communicated with the degassing device (202).
3. The plastic film extrusion molding machine according to claim 1, wherein the discharge mechanism (203) comprises a discharge chamber (2031) and a discharge pipe (2032), the discharge chamber (2031) is internally communicated with the degassing device (202), and the discharge pipe (2032) is internally communicated with the extrusion mechanism (3).
4. The plastic film extrusion molding machine according to claim 1, wherein the extrusion mechanism (3) comprises an extrusion cavity (301), an extrusion screw (302) and an extrusion motor (303), the extrusion motor (303) is fixedly connected to the left side of the extrusion cavity (301), the output end of the extrusion motor (303) is fixedly connected with the extrusion screw (302), and the extrusion screw (302) is located inside the extrusion cavity (301).
5. The plastic film extrusion molding machine as claimed in claim 1, wherein said extrusion die (4) comprises a molding section (401) and a die head (402), said die head (402) being fixedly attached to the right side of the lower end of the molding section (401).
6. The plastic film extrusion molding machine as claimed in claim 1, wherein there are two shaping mechanisms (5), and a middle surface between the two shaping mechanisms (5) is in the same plane with the extrusion port of the die head (402).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121994136.0U CN215703869U (en) | 2021-08-24 | 2021-08-24 | Plastic film extrusion molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121994136.0U CN215703869U (en) | 2021-08-24 | 2021-08-24 | Plastic film extrusion molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215703869U true CN215703869U (en) | 2022-02-01 |
Family
ID=80006094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121994136.0U Expired - Fee Related CN215703869U (en) | 2021-08-24 | 2021-08-24 | Plastic film extrusion molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215703869U (en) |
-
2021
- 2021-08-24 CN CN202121994136.0U patent/CN215703869U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220201 |