CN221112802U - Single screw extruder for producing PET sheet - Google Patents
Single screw extruder for producing PET sheet Download PDFInfo
- Publication number
- CN221112802U CN221112802U CN202323048044.5U CN202323048044U CN221112802U CN 221112802 U CN221112802 U CN 221112802U CN 202323048044 U CN202323048044 U CN 202323048044U CN 221112802 U CN221112802 U CN 221112802U
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- CN
- China
- Prior art keywords
- extrusion
- screw extruder
- crowded material
- channel
- pet sheet
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- 238000001125 extrusion Methods 0.000 claims abstract description 100
- 230000017525 heat dissipation Effects 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 22
- 239000007924 injection Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims description 29
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 16
- 239000005020 polyethylene terephthalate Substances 0.000 description 16
- 238000001816 cooling Methods 0.000 description 14
- 239000002994 raw material Substances 0.000 description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- -1 Polyethylene terephthalate Polymers 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XRBXGZZMKCBTFP-UHFFFAOYSA-N 4-(2,2-dihydroxyethoxycarbonyl)benzoic acid Chemical compound OC(O)COC(=O)C1=CC=C(C(O)=O)C=C1 XRBXGZZMKCBTFP-UHFFFAOYSA-N 0.000 description 1
- 229920008790 Amorphous Polyethylene terephthalate Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- BTVWZWFKMIUSGS-UHFFFAOYSA-N dimethylethyleneglycol Natural products CC(C)(O)CO BTVWZWFKMIUSGS-UHFFFAOYSA-N 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a single screw extruder for producing PET sheets, which comprises a base, wherein an extrusion channel is arranged above the base, an extrusion screw is rotatably arranged in the extrusion channel through a bearing, an air injection hole is arranged on the outer wall of one side of the top end of the extrusion screw, an air exhaust hole is arranged below the air injection hole and positioned on the outer wall of the extrusion screw, the air injection hole and the air exhaust hole are connected through a heat dissipation channel in an intercommunication way, the heat dissipation channel adopts an S-shaped structural design, an inner thread part is arranged on the inner wall of the tail end of the extrusion channel, the tail end of the extrusion channel is provided with an extrusion head, the front end of the extrusion head is fixedly provided with an outer thread part, and the outer thread part is in threaded connection with the inner thread part.
Description
Technical Field
The utility model relates to the technical field of PET sheet production, in particular to a single screw extruder for PET sheet production.
Background
Polyethylene terephthalate (PET), the chemical formula of which is (C10H 8O 4) n, is prepared by the transesterification of dimethyl terephthalate and ethylene glycol or the esterification of terephthalic acid and ethylene glycol to synthesize dihydroxyethyl terephthalate and then carrying out polycondensation reaction. Belongs to crystalline saturated polyester, is a milky or pale yellow polymer with high crystallinity, has smooth and glossy surface, is a common resin in life, and can be divided into APET, RPET and PETG;
The polyethylene terephthalate can be produced into sheet-shaped sheets, extrusion work is needed when raw materials are processed, a screw extruder is generally adopted in the existing extrusion work, however, when the existing screw extruder is in operation, the extrusion head of the existing screw extruder is inconvenient to replace, so that the existing screw extruder cannot be suitable for production and processing requirements of more shapes, certain use limitations exist, and the heat dissipation performance of an internal screw is poor due to the fact that a shell is wrapped, so that the utility model provides a single screw extruder for producing PET sheets.
Disclosure of utility model
The utility model aims to provide a single screw extruder for producing PET sheets, which solves the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a PET sheet production single screw extruder, includes the base, the base top is provided with the crowded material passageway, the inside crowded material screw rod that installs through the bearing rotation of crowded material passageway, be provided with the gas injection hole on the outer wall of crowded material screw rod top one side, the vent has been seted up to gas injection hole below and be located crowded material screw rod outer wall, be connected through the intercommunication of heat dissipation passageway between gas injection hole and the vent, the heat dissipation passageway adopts "S" structural design, be provided with the internal thread portion on the inner wall of crowded material passageway tail end, crowded material passageway tail end is provided with crowded material head, crowded material head front end fixed mounting has the external screw thread spare, threaded connection between external screw thread spare and the internal thread portion.
Preferably, a feeding hopper is fixedly arranged on the upper surface of the tail end of the extrusion channel, and the feeding hopper is connected with the extrusion channel in an intercommunication mode.
Preferably, the tail end of the extrusion screw is fixedly connected with a driven wheel through a rotating shaft, and an extrusion motor is arranged below the driven wheel.
Preferably, the extrusion motor is fixedly arranged on the upper surface of the base, the driving wheel is fixedly arranged on the output shaft of the extrusion motor, and the driving wheel is connected with the driven wheel through belt transmission.
Preferably, a plurality of circumferentially distributed heating rods are arranged in the extrusion channel.
Preferably, the base is fixedly connected with the extrusion channel through a support column.
Compared with the prior art, the utility model has the beneficial effects that:
According to the utility model, the heat dissipation channel is arranged in the extrusion screw, and the temperature in the extrusion screw can be taken away in the process of injecting cold air into the discharge through the air injection hole, so that the use characteristic of rapid cooling of the cold air is realized, the rapid cooling work of the extrusion screw can be helped, the cooling speed of the internal screw is effectively improved, the heat dissipation channel adopts an S-shaped structural design, the residence time of the cold air in the screw can be effectively improved, the contact area between the cold air and the screw is increased, and therefore, the contact cooling effect is better, the extrusion screw has better heat dissipation performance, and the technical problem of poor heat dissipation caused by the wrapping of the channel is avoided;
meanwhile, the extrusion head and the extrusion material channel are fixedly connected through threads, the connection mode ensures that the connection end has good sealing performance, meanwhile, the extrusion head can be conveniently detached and replaced, the technical characteristics of quick assembly and quick disassembly are achieved, the disassembly and replacement scheme of the extrusion head is convenient, the screw extruder can be applied to sheet production with more size requirements, the application range of the extruder can be effectively improved through quick replacement of the extrusion head, the use limitation is reduced, the whole connection structure is simple, the manufacturing difficulty is low, and the practicability is better.
Drawings
FIG. 1 is a schematic view of the front exterior overall structure of an embodiment of the present utility model;
FIG. 2 is a schematic view of an internal planar structure of an extrusion channel according to an embodiment of the present utility model;
FIG. 3 is a schematic view of the external structure of an extrusion screw according to an embodiment of the present utility model;
FIG. 4 is a schematic view showing the internal cross-sectional structure of an extrusion screw according to an embodiment of the present utility model;
FIG. 5 is a schematic view of a heating rod in an extrusion channel according to an embodiment of the present utility model.
In the figure: 1. a base; 2. a material extruding channel; 3. a feed hopper; 4. a material extruding screw; 5. an air injection hole; 6. an exhaust hole; 7. a heat dissipation channel; 8. an internal thread portion; 9. extruding a material head; 10. an external screw member; 11. driven wheel; 12. a material extruding motor; 13. a driving wheel; 14. a belt; 15. a heating rod; 16. and (5) supporting the column.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," 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 utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be 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, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-5, an embodiment of the present utility model is provided: the single-screw extruder for producing PET sheets comprises a base 1, wherein an extrusion channel 2 is arranged above the base 1, and the base 1 is fixedly connected with the extrusion channel 2 through a support column 16, so that the structural connectivity between the base 1 and the extrusion channel 2 is improved, and the single-screw extruder has good stability;
The inside of the extrusion channel 2 is rotatably provided with an extrusion screw 4 through a bearing, an air injection hole 5 is arranged on the outer wall of one side of the top end of the extrusion screw 4, an exhaust hole 6 is arranged below the air injection hole 5 and positioned on the outer wall of the extrusion screw 4, the air injection hole 5 and the exhaust hole 6 are connected in an intercommunicating manner through a heat dissipation channel 7, and the heat dissipation channel 7 adopts an S-shaped structural design;
In the structural design, after the material extruding screw 4 stops working, a cold air pipeline can be arranged outside the air injection hole 5, cold air in the cold air pipeline is conveyed to the air injection hole through an external pump body, blown out from the cold air pipe, enters into a heat dissipation channel 7 in the material extruding screw 4 through the air injection hole 5, and finally is discharged through mechanical energy of an air exhaust hole 6;
In the process that the cold air is injected into the discharge process through the air injection hole 5, the temperature inside the extrusion screw 4 can be taken away, the use characteristic of rapid cooling of the cold air is realized, the rapid cooling and cooling work of the extrusion screw 4 can be helped, the cooling speed of the internal screw is effectively improved, the heat dissipation channel 7 adopts an S-shaped structural design, the stay time of the cold air in the screw can be effectively improved, the contact area between the cold air and the screw is increased, and therefore, the contact cooling effect is better, the extrusion screw has better heat dissipation performance, and the technical problem of poor heat dissipation caused by the wrapping of the channel is avoided;
Wherein, an inner thread part 8 is arranged on the inner wall of the tail end of the extrusion channel 2, an extrusion head 9 is arranged at the tail end of the extrusion channel 2, an external thread piece 10 is arranged at the front end of the extrusion head 9, and the external thread piece 10 is in threaded connection with the inner thread part 8;
According to the above description, when the extrusion head 9 is in actual use, the extrusion head 9 can be installed at the discharge end of the extrusion channel 2 through the external screw thread piece 10, extrusion work with specified size can be carried out on materials through the extrusion head 9, normal processing and use requirements are guaranteed, meanwhile, the extrusion head 9 and the extrusion channel 2 are fixedly connected through the screw thread, the connection mode ensures that the connection end has good tightness, meanwhile, the extrusion head 9 can be conveniently detached and replaced, the technical characteristics of quick assembly and quick disassembly are achieved, the disassembly and the replacement are convenient, the screw extruder can be applied to sheet production work with more size requirements through the scheme of the disassembly and replacement of the extrusion head 9, the application range of the screw extruder can be effectively improved through the quick replacement of the extrusion head 9, the use limitation is reduced, the whole connection structure is simple, the manufacturing difficulty is low, and the practicability is better.
In this embodiment, in order to facilitate the extrusion and injection work of raw materials for PET sheet raw materials, a feeding hopper 3 is fixedly installed on the upper surface of the tail end of the extrusion channel 2, and the feeding hopper 3 is connected with the extrusion channel 2 in an intercommunication mode, and the PET sheet raw materials can be injected through the feeding hopper 3.
In the embodiment, in order to ensure the normal use of the screw extruder of the utility model, the tail end of the extruding screw 4 is fixedly connected with a driven wheel 11 through a rotating shaft, and an extruding motor 12 is arranged below the driven wheel 11;
Further, the extrusion motor 12 is fixedly arranged on the upper surface of the base 1, the driving wheel 13 is fixedly arranged on the output shaft of the extrusion motor 12, and the driving wheel 13 is in transmission connection with the driven wheel 11 through a belt 14;
According to the structural design, the extruding motor 12 can work, the extruding motor 12 can drive the driving wheel 13 to rotate during work, and the driving wheel 13 is in transmission connection with the driven wheel 11 through the belt 14, so that when the driving wheel 13 rotates, the driving wheel 13 can drive the driven wheel 11 to rotate through the belt 14, and the extruding screw 4 is driven to rotate through the rotation of the driven wheel 11 to extrude materials, so that normal single screw extruding work is guaranteed.
In this embodiment, in order to conveniently heat the raw materials inside the extrusion channel 2 and melt the work, improve extrusion efficiency and quality, extrusion channel 2 internally mounted has a plurality of circumferentially distributed heating rods 15, can heat the PET sheet raw materials of inside through the heating rod 15 that sets up and melt, conveniently carries out the extrusion work of later stage.
Working principle: when the utility model is in actual use, the heating rod 15 can be started before the extrusion work, so that the heating rod 15 is used for preheating the extrusion channel 2 and the extrusion screw 4 inside;
after the preheating work is finished, injecting PET sheet raw materials through the arranged feed hopper 3, and enabling the injected PET sheet raw materials to enter a high-temperature environment in the extrusion channel 2 so as to be melted;
At this time, the extrusion motor 12 can work through the arranged extrusion motor 12, when the extrusion motor 12 works, the extrusion motor can drive the driving wheel 13 to rotate, and because the driving wheel 13 is in transmission connection with the driven wheel 11 through the belt 14, when the driving wheel 13 rotates, the driving wheel 11 can be driven to rotate through the belt 14, so that the extrusion screw 4 is driven to rotate and extrude through the rotation of the driven wheel 11, and the normal single screw extrusion work is ensured;
The material rotationally extruded by the extrusion screw 4 is molded and discharged by the extrusion head 9, so that the single screw extrusion effect on PET sheet raw materials can be achieved;
After the extruder is used, a cold air pipeline can be arranged outside the air injection hole 5, cold air in the cold air pipeline is conveyed to the extruder through an external pump body, blown out from a cold air pipe, enters into a heat dissipation channel 7 in the extrusion screw 4 through the air injection hole 5, and finally is discharged through mechanical energy of an exhaust hole 6;
In the process that the cold air is injected into the discharge process through the air injection hole 5, the temperature inside the extrusion screw 4 can be taken away, the use characteristic of rapid cooling of the cold air is realized, the rapid cooling and cooling work of the extrusion screw 4 can be helped, the cooling speed of the internal screw is effectively improved, the heat dissipation channel 7 adopts an S-shaped structural design, the stay time of the cold air in the screw can be effectively improved, the contact area between the cold air and the screw is increased, and therefore, the contact cooling effect is better, the extrusion screw has better heat dissipation performance, and the technical problem of poor heat dissipation caused by the wrapping of the channel is avoided;
The extrusion head 9 is arranged at the discharge end of the extrusion channel 2 through the external screw thread piece 10 in a threaded manner in practical use, extrusion work with specified size can be carried out on materials through the extrusion head 9, normal processing and use requirements are guaranteed, meanwhile, the extrusion head 9 and the extrusion channel 2 are fixedly connected through threads, the connection mode ensures that the connection end has good sealing performance, meanwhile, the extrusion head 9 can be conveniently detached and replaced, the screw extruder has the technical characteristics of quick assembly and quick disassembly, the disassembly and replacement are convenient, the screw extruder can be applied to sheet production work with more size requirements through the convenient disassembly and replacement scheme of the extrusion head 9, the application range of the screw extruder can be effectively improved through the quick replacement of the extrusion head 9, the use limitation is reduced, the whole connection structure is simple, the manufacturing difficulty is low, and the practicability is better.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
- PET sheet production single screw extruder, including base (1), its characterized in that, base (1) top is provided with crowded material passageway (2), crowded material passageway (2) are inside to be installed through the bearing rotation crowded material screw rod (4), be provided with on the outer wall of crowded material screw rod (4) top one side gas injection hole (5), gas injection hole (5) below just is located crowded material screw rod (4) outer wall and has seted up exhaust hole (6), through heat dissipation passageway (7) intercommunication connection between gas injection hole (5) and exhaust hole (6), heat dissipation passageway (7) adopt "S" structural design, be provided with internal thread portion (8) on the tail end inner wall of crowded material passageway (2), crowded material passageway (2) tail end is provided with crowded material head (9), crowded material head (9) front end fixed mounting has external screw thread piece (10), threaded connection between external screw thread piece (10) and the internal thread portion (8).
- 2. The PET sheet production single screw extruder of claim 1, wherein: the upper surface of the tail end of the extrusion channel (2) is fixedly provided with a feed hopper (3), and the feed hopper (3) is connected with the extrusion channel (2) in an intercommunication way.
- 3. The PET sheet production single screw extruder of claim 1, wherein: the tail end of the extrusion screw (4) is fixedly connected with a driven wheel (11) through a rotating shaft, and an extrusion motor (12) is arranged below the driven wheel (11).
- 4. A PET sheet production single screw extruder according to claim 3, characterized in that: the extrusion motor (12) is fixedly arranged on the upper surface of the base (1), a driving wheel (13) is fixedly arranged on an output shaft of the extrusion motor (12), and the driving wheel (13) is in transmission connection with the driven wheel (11) through a belt (14).
- 5. The PET sheet production single screw extruder of claim 1, wherein: a plurality of circumferentially distributed heating rods (15) are arranged in the extrusion channel (2).
- 6. The PET sheet production single screw extruder of claim 1, wherein: the base (1) is fixedly connected with the extrusion channel (2) through a support column (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323048044.5U CN221112802U (en) | 2023-11-13 | 2023-11-13 | Single screw extruder for producing PET sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323048044.5U CN221112802U (en) | 2023-11-13 | 2023-11-13 | Single screw extruder for producing PET sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221112802U true CN221112802U (en) | 2024-06-11 |
Family
ID=91343354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323048044.5U Active CN221112802U (en) | 2023-11-13 | 2023-11-13 | Single screw extruder for producing PET sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221112802U (en) |
-
2023
- 2023-11-13 CN CN202323048044.5U patent/CN221112802U/en active Active
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