CN210233606U - Single-screw structure for thermosetting plastic granulation - Google Patents
Single-screw structure for thermosetting plastic granulation Download PDFInfo
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- CN210233606U CN210233606U CN201920996691.3U CN201920996691U CN210233606U CN 210233606 U CN210233606 U CN 210233606U CN 201920996691 U CN201920996691 U CN 201920996691U CN 210233606 U CN210233606 U CN 210233606U
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- barrel
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- screw rod
- scraper
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Abstract
The utility model provides a single screw rod structure for thermosetting plastic granulation, including screw rod, barrel and extrusion template, the screw rod is located in the barrel, the screw rod includes the measurement section, the measurement section is located and is close to one side of extrusion template, be equipped with a plurality of pin groups on the barrel of measurement section, every group the pin group comprises a plurality of pins, be equipped with a plurality of mounting holes that are used for installing the pin on the lateral wall of barrel; and a scraper groove is arranged on the head part of the screw rod close to the extrusion template, and a scraper is arranged in the scraper groove. The utility model discloses increase the pin on the barrel of measurement section department of screw rod, improved the coefficient of friction of barrel inner wall, increase the scraper simultaneously between screw rod head and extrusion template, help will pile up the continuous clean up of material of extruding template inner wall department to reduce the blind spot, help making the thermosetting plastics melt extrude from extrusion template through the measurement section of screw rod in succession through above two kinds of improvements.
Description
Technical Field
The utility model relates to an extruder technical field, concretely relates to a single screw structure for thermosetting plastic granulation.
Background
In the prior art, the effective length of a single screw is generally divided into three sections, namely a conveying section, a compression section and a metering section, wherein the metering section is also called an extrusion section, materials are conveyed forwards through the solid conveying principle, namely through the relative motion of the screw and a machine barrel, and then are melted through the heating of the machine barrel and the friction action of the machine barrel, the melted materials enter the metering section, and for an extruder with a smooth machine barrel, the phenomenon of 'slipping' is generated when the metering section conveys a thermosetting plastic melt due to the low friction coefficient of the machine barrel, so that the previous conveying of the melt is influenced; in addition, because the dead zone exists between the head of the single screw and the discharging template, the melt is easy to solidify in the space, and the discharging hole of the template is blocked by the solidified material, so that the extrusion of the material from the template is stopped. Therefore, there is a great need for a single screw structure for pelletizing thermosetting plastics that can solve the existing problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at prior art not enough, a single screw rod structure for thermosetting plastics granulation is provided, the device increases the pin on the barrel of the measurement section department of screw rod, the coefficient of friction of barrel inner wall has been improved, increase the scraper simultaneously between screw rod head and extrusion template, help piling up the continuous clean up of the material of extruding template inner wall department, thereby reduce the blind spot, improve through above two kinds and help making the thermosetting plastics melt extrude from extrusion template through the measurement section of screw rod in succession, be convenient for going on of follow-up granulation process.
The utility model provides a following technical scheme:
a single screw structure for thermosetting plastic granulation comprises a screw, a machine barrel and an extrusion template, wherein the screw is arranged in the machine barrel and comprises a metering section, the metering section is positioned at one side close to the extrusion template, a plurality of pin groups are arranged on the machine barrel at the metering section, each pin group consists of a plurality of pins, and a plurality of mounting holes for mounting the pins are formed in the side wall of the machine barrel; and a scraper groove is arranged on the head part of the screw rod close to the extrusion template, and a scraper is arranged in the scraper groove.
Preferably, the number of the pin groups is 1-3, and the pin groups are distributed along the axial direction of the machine barrel.
Preferably, each group of the pins consists of 2-5 pins, and the pins are uniformly distributed on the cylinder in the circumferential direction.
Preferably, the screw rod is provided with a screw ridge, a groove is formed in the contact position of the screw ridge and the pin, and when the screw rod rotates, the end part of the pin passes through the groove.
Preferably, the pin is provided with an external thread, an internal thread is arranged in the mounting hole, and the pin is in threaded connection with the machine barrel.
Preferably, the clearance between the scraper and the extrusion template is less than or equal to 1mm, and the clearance between the scraper and the inner wall of the cylinder is less than or equal to 1 mm.
Preferably, the top of the machine barrel is provided with a feed hopper.
The utility model has the advantages that:
the utility model discloses a device increases the pin on the barrel of measurement section department of screw rod, the coefficient of friction of barrel inner wall has been improved, thereby help the fuse-element to be carried the screw head in succession and extrude in the space between the template, increase the scraper simultaneously between screw head and extrusion template, help will piling up in the continuous clean up of the material of extrusion template inner wall department, thereby reduce the blind spot, help making the thermosetting plastics melt extrude from extrusion template through the measurement section of screw rod in succession through two kinds of improvements above, be convenient for going on of follow-up granulation process.
Drawings
The accompanying drawings are included to provide a further understanding and description of the invention.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of a partial structure of the screw of the present invention;
fig. 3 is a schematic view of the installation position of the scraper of the present invention.
Labeled as: 1. a screw; 2. a barrel; 3. extruding a template; 4. a pin; 5. mounting holes; 6. a scraper; 7. a screw edge; 8. a groove; 9. a feed hopper.
Detailed Description
As shown in fig. 1 to 3, a single screw structure for granulation of thermosetting plastic comprises a screw 1, a cylinder 2 and an extrusion die plate 3, wherein a feed hopper 9 is arranged at the top of the cylinder 2, the screw 1 is arranged in the cylinder 2, the screw 1 comprises a metering section, and the metering section is positioned at one side close to the extrusion die plate 3, and the specific position is shown as a in fig. 1. Be equipped with 1-3 group's pin group on the barrel 2 of measurement section department, the pin group is along 2 axial distributions of barrel, and every group pin group comprises 2-5 pins, and 4 circumference evenly distributed on barrel 2 of pin, is equipped with spiral shell arris 7 on the screw rod 1, and spiral shell arris 7 is equipped with recess 8 with 4 contact departments of pin, and when screw rod 1 rotated, 4 tip of pin passed through from recess 8. Be equipped with a plurality of mounting holes 5 that are used for mounting pin 4 on the lateral wall of barrel 2, be equipped with the external screw thread on the pin 4, be equipped with the internal thread in the mounting hole 5, pin 4 and 2 threaded connection of barrel, in the use, insert the mounting hole with pin 4 from 2 surfaces of barrel and fix, convenient to use also is convenient for change after the wearing and tearing appear in pin 4.
As shown in fig. 2, a scraper groove is arranged on the head of the screw 1 close to the extrusion template 3, a scraper 6 is arranged in the scraper groove, the gap between the scraper 6 and the extrusion template 3 is less than or equal to 1mm, and the gap between the scraper 6 and the inner wall of the machine barrel 2 is less than or equal to 1 mm. When the thermosetting plastic melt is conveyed to the inner wall of the extrusion template 3, the scraper 6 arranged at the head of the screw rod 1 is driven to rotate along with the screw rod 1, meanwhile, the pressure is generated in the extruder due to material conveying, the scraper 6 is tightly attached to the inner wall of the extrusion template 3 due to the pressure, when the screw rod 1 rotates, the scraper 6 is driven to rotate along with the screw rod 1, the thermosetting plastic melt stacked on the inner wall of the extrusion template 3 is taken away by the scraper 6, no material is stacked on the inner wall of the extrusion template 3, and the thermosetting plastic melt is kept clean.
The device of the embodiment adds the pin 4 on the machine barrel 2 at the metering section of the screw 1, so that the friction coefficient of the inner wall of the machine barrel 2 is improved, the continuous conveying of the melt into the space between the head of the screw 1 and the extrusion template 3 is facilitated, meanwhile, the scraper 6 is added between the head of the screw 1 and the extrusion template 3, the continuous cleaning of the material accumulated on the inner wall of the extrusion template 3 is facilitated, the dead zone is reduced, the continuous extrusion of the thermosetting plastic melt from the extrusion template 3 through the metering section of the screw 1 is facilitated through the two improvements, and the subsequent granulation process is facilitated.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The single screw structure for thermosetting plastic granulation is characterized by comprising a screw, a machine barrel and an extrusion template, wherein the screw is arranged in the machine barrel and comprises a metering section, the metering section is positioned at one side close to the extrusion template, a plurality of pin groups are arranged on the machine barrel at the metering section, each pin group consists of a plurality of pins, and a plurality of mounting holes for mounting the pins are formed in the side wall of the machine barrel; and a scraper groove is arranged on the head part of the screw rod close to the extrusion template, and a scraper is arranged in the scraper groove.
2. A single screw configuration for pelletizing thermosetting plastics according to claim 1, characterized in that the number of pin groups is 1-3, the pin groups being distributed axially along the barrel.
3. A single screw configuration for pelletizing thermosetting plastics according to claim 2, characterized in that each group of pins consists of 2 to 5 pins and the pins are uniformly distributed circumferentially on the barrel.
4. A single screw structure for pelletizing thermosetting plastics according to claim 3, characterized in that the screw is provided with ridges, grooves are provided at the contact points of the ridges and the pins, and the ends of the pins pass through the grooves when the screw rotates.
5. The single screw structure for pelletizing thermosetting plastic according to claim 1, characterized in that the pin is provided with an external thread, the mounting hole is internally provided with an internal thread, and the pin is in threaded connection with the cylinder.
6. A single screw configuration for pelletizing thermosetting plastics according to claim 1, characterized in that the clearance between the scraper and the extrusion die plate is less than or equal to 1mm and the clearance between the scraper and the inner wall of the barrel is less than or equal to 1 mm.
7. A single screw configuration for pelletizing thermosetting plastics according to claim 1, characterized in that the top of the barrel is provided with a feed hopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920996691.3U CN210233606U (en) | 2019-06-28 | 2019-06-28 | Single-screw structure for thermosetting plastic granulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920996691.3U CN210233606U (en) | 2019-06-28 | 2019-06-28 | Single-screw structure for thermosetting plastic granulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210233606U true CN210233606U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920996691.3U Active CN210233606U (en) | 2019-06-28 | 2019-06-28 | Single-screw structure for thermosetting plastic granulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111251560A (en) * | 2020-04-05 | 2020-06-09 | 祁鑫鑫 | Automatic production equipment for rubber component |
-
2019
- 2019-06-28 CN CN201920996691.3U patent/CN210233606U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111251560A (en) * | 2020-04-05 | 2020-06-09 | 祁鑫鑫 | Automatic production equipment for rubber component |
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