CN211917645U - Polypropylene foaming master slice extruder - Google Patents
Polypropylene foaming master slice extruder Download PDFInfo
- Publication number
- CN211917645U CN211917645U CN201921734500.2U CN201921734500U CN211917645U CN 211917645 U CN211917645 U CN 211917645U CN 201921734500 U CN201921734500 U CN 201921734500U CN 211917645 U CN211917645 U CN 211917645U
- Authority
- CN
- China
- Prior art keywords
- feeding
- feeding device
- barrel
- screw
- feeding part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a polypropylene foaming master slice extruder, include the barrel, extrude screw rod and feeding device, feeding device is including setting up at the preceding feeding device of barrel tip and setting up the side feeding device at the barrel middle part, preceding feeding device is the ascending feeding hopper of opening, its below communicate in extrude the screw rod, side feeding device is including the feeding portion of connecting the barrel and the ascending side feeding hopper of opening that is located feeding portion tip top. The utility model discloses improve on traditional twin-screw extruder's basis, the polypropylene raw materials still in the past feeding device feeding, and AC foamer and leftover bits then change into from the side feeding device feeding, mix through extruding the screw rod plastify, extrude the material. Because the side feeding device is arranged in the middle of the screw, the AC foaming agent is fed from the side feeding device and is less subjected to shearing and plasticizing of the screw, the retention time of the foaming agent in the extruder is shortened, the micro-decomposition probability of the foaming agent is reduced, and the yield of products is improved.
Description
Technical Field
The utility model belongs to the technical field of the plastics extrusion equipment, relate to the extruder, concretely relates to polypropylene foaming master slice extruder.
Background
The polypropylene foaming material is extruded and molded by mixing the raw materials of polypropylene and foaming master batches into a screw of an extruder through a feeding device, and plasticizing and mixing the mixture. And then extruding the plasticized and uniformly mixed material into a master slice with the required specification. After irradiation crosslinking, the polypropylene foam material required by customers is produced through foaming in a foaming furnace.
The feeding mode of the traditional double-screw extruder is feeding through a feed inlet at the front end of the extruder. After entering the screw from the front end feed inlet, the raw materials are cut and plasticized by the whole screw, and then are extruded, cooled and shaped into the required master slice through a specific die. Such feeding may cause several disadvantages. First, because AC blowing agents are temperature sensitive, the transient high temperatures caused by long heating times and strong twin screw shear can cause micro-decomposition of the blowing agent, which can result in foaming during the foaming of the master batch, affecting use. Secondly, the polypropylene is a pseudoplastic fluid after being melted, the fluid is sensitive to shearing, strong shearing can destroy the molecular structure during secondary plasticizing and affect the material performance, the extruded leftover materials contain about 70 percent of polypropylene, and if the material is fed from the front end, the material performance can be unstable. For example, the natural feeding device of the extruder disclosed in chinese patent CN 109249602 a, which is provided with only one feeding hopper, has the above-mentioned problems although the feeding efficiency is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a polypropylene foaming master slice extruder has special feeding device for the time that the foamer is detained in the extruder is shorter, and the probability of foamer micro-decomposition is handed over the end, and the yields of product is higher, and material performance is stable.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a polypropylene foaming master slice extruder, includes that one end is seted up the barrel of extrusion opening, rotates the extrusion screw rod that sets up in the barrel and sets up the feeding device outside the barrel and communicate in the barrel inside, extrude the screw rod by driving motor drive, feeding device is including setting up the preceding feeding device at barrel tip and setting up the side feeding device at the barrel middle part, preceding feeding device is the ascending feeding hopper of opening, its below communicate in extrude the screw rod, side feeding device is including the feeding portion of connecting the barrel and the ascending side feeding hopper of opening that is located the feeding tip top.
The utility model discloses when using, open preceding feeding device earlier, start driving motor, then with the feeding of polypropylene raw materials from preceding feeding device, extrude the screw rod and extrude the back with the polypropylene raw materials from extruding the mouth, with AC foamer and leftover bits from the feeding of side feeding device, after extruding screw rod plastify and mixing, extrude from extruding the mouth. Because the side feeding device is arranged at the middle position of the extrusion screw, the AC foaming agent is fed from the side feeding device, the retention time of the foaming agent in the extruder is short, and the shearing and plasticizing degree of the foaming agent by the extrusion screw is reduced, thereby reducing the micro-decomposition probability of the foaming agent and improving the yield of products. Meanwhile, the leftover materials belong to secondary materials and are fed by a side feeding device, the time for shearing and plasticizing by an extrusion screw is short, strong shearing is reduced, and the material performance is more stable. Preferably, the feeding part is located barrel top and vertical setting, during the feeding, with AC foaming agent and leftover bits from the feeding hopper feeding of side, directly fall into the extrusion spiral through the feeding part, the feeding is convenient high-efficient, practices thrift the energy consumption.
Preferably, a feeding switch is arranged in the feeding part and close to the cylinder, and when the side feeding device is not needed to be used or the AC foaming agent and the leftover materials are not fed, the feeding switch is closed to prevent the polypropylene raw materials from overflowing from the side feeding device.
Preferably, the feeding portion is a cylindrical feeding portion, the feeding switch comprises a rotating shaft and a rotatable circular plate, the rotating shaft is rotatably installed inside the feeding portion and is arranged along one diameter of the cross section of the feeding portion, the rotatable circular plate is fixedly installed outside the rotating shaft and is matched with the inside of the feeding portion, one end of the rotating shaft penetrates out of the feeding portion and is connected with a handle, the circular plate is rotated by rotating the handle during use, when the circular plate is coaxial with the feeding portion, the edge of the circular plate is abutted against the inner wall of the feeding portion, the circular plate blocks the inside of the feeding portion to complete closing, and when the central axis of the circular plate is perpendicular to the central axis of the feeding portion, the feeding switch is completely opened.
Preferably, the feeding part is connected to the side part of the barrel, a bent feeding channel is formed between the inside of the side feeding hopper and the inside of the feeding part, a feeding screw is further arranged in the feeding part and driven by a feeding motor, the feeding screw is driven by the feeding motor to rotate during use, the AC foaming agent and the leftover materials are conveyed to the extruding screw inside the barrel, and the feeding screw is always in a rotating operation state during use, so that the polypropylene raw material is effectively prevented from overflowing from the side feeding device.
Preferably, the feeding part is arranged in an inclined manner, the lower end of the feeding part is connected to the side part of the barrel, the upper end of the feeding part is connected to the bottom of the side feeding hopper, the inclined angle of the feeding part to the horizontal direction is alpha, and the value of alpha is 10-45 degrees, so that smooth feeding of a side feeding device is facilitated, and residues of an AC foaming agent and leftover materials are reduced or avoided.
Preferably, the feeding screw is a double screw, the rotating directions are opposite, the pushing directions of the AC foaming agent and the leftover materials are the same, the pushing effect is good, the efficiency is high, the AC foaming agent and the leftover materials can be mixed in advance, the plasticizing extrusion is facilitated, and the production efficiency and the production quality are improved.
The utility model discloses improve on traditional twin-screw extruder's basis, the polypropylene raw materials still in the past feeding device feeding, and AC foamer and leftover bits then change into from the side feeding device feeding, mix through extruding the screw rod plastify, extrude the material. Because the side feeding device is arranged in the middle of the screw, the AC foaming agent is fed from the side feeding device and is less subjected to shearing and plasticizing of the screw, the retention time of the foaming agent in the extruder is shortened, the micro-decomposition probability of the foaming agent is reduced, and the yield of products is improved. Similarly, the leftover materials belong to secondary materials, are fed by a side feeding device and are subjected to less shearing plasticization by a section of screw, and compared with the prior art, the leftover materials are subjected to less strong shearing, so that the material performance is more stable.
Drawings
Fig. 1 is a perspective view of embodiment 1 of the present invention;
fig. 2 is a perspective view of embodiment 1 of the present invention;
FIG. 3 is a schematic view of a feeding device in embodiment 1 of the present invention;
fig. 4 is a schematic view of a driving motor according to embodiment 1 of the present invention;
FIG. 5 is a schematic view of a side feeding device in embodiment 2 of the present invention;
FIG. 6 is a cross-sectional view of a side feeding device in embodiment 2 of the present invention;
FIG. 7 is a schematic view of a feeding device in embodiment 3 of the present invention;
FIG. 8 is a schematic view of a side feeding device in embodiment 3 of the present invention;
fig. 9 is a schematic view of the inclination angle of the feeding cylinder in embodiment 3 of the present invention;
figure 10 is a schematic view of a feeding screw according to example 3 of the present invention;
the items in the figure are respectively: 1 cylinder, 11 extrusion ports, 2 extrusion screws, 21 driving motors, 3 feeding devices, 31 front feeding devices, 32 side feeding devices, 321 feeding parts, 322 side feeding hoppers, 323 feeding switches, 324 rotating shafts, 325 round plates, 326 handles, 327 feeding screws and 328 feeding motors.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the following embodiments and accompanying drawings. In the following examples, the fixed connection is effected by welding, unless otherwise specified.
Example 1
As shown in fig. 1 to 4, a polypropylene foaming master slice extruder comprises a cylinder 1 with one end provided with an extrusion port 11, an extrusion screw 2 rotatably arranged in the cylinder 1, and a feeding device 3 arranged outside the cylinder 1 and communicated with the inside of the cylinder 1, wherein the extrusion screw 2 is driven by a driving motor 21, the feeding device 3 comprises a front feeding device 31 arranged at the end of the cylinder 1 and a side feeding device 32 arranged at the middle of the cylinder 1, the front feeding device 31 is a feeding hopper with an upward opening, the lower part of the front feeding device is communicated with the extrusion screw 2, and the side feeding device 32 comprises a feeding part 321 connected with the cylinder 1 and a side feeding hopper 322 with an upward opening and positioned above the end of the feeding part 321.
In this embodiment, extrude screw rod 2 and be the twin-screw, its rotation direction is opposite, extrude screw rod 2 and keep away from the tip of extruding 11 one end is worn out barrel 1 and fixed mounting have the same spur gear of intermeshing's specification, and shaft coupling fixed connection is passed through with driving motor 21's axis of rotation to one of them screw rod 2 rotation is extruded in driving motor 21 drive to drive another through the spur gear of meshing and extrude screw rod 2 and rotate, rotate reverse opposite extrusion screw rod 2, have better shearing effect, cut the plastify and push the raw materials to extrude mouthful 11.
When the embodiment is used, the front feeding device 31 is started, the driving motor 21 is started, then the polypropylene raw material is fed from the front feeding device 31, the extrusion screw 2 extrudes the polypropylene raw material from the extrusion port 11, the AC foaming agent and the leftover materials are fed from the side feeding device 32, and the mixture is plasticized and mixed by the extrusion screw 2 and then extruded from the extrusion port 11. Because the side feeding device 32 is arranged at the middle position of the extrusion screw 2, the AC foaming agent is fed from the side feeding device 32, the retention time of the foaming agent in the extruder is short, and the shearing and plasticizing degree of the foaming agent extruded by the extrusion screw 2 is reduced, thereby reducing the micro-decomposition probability of the foaming agent and improving the yield of products. Meanwhile, the leftover materials belong to secondary materials and are fed by the side feeding device 32, so that the shearing and plasticizing time of the extruded screw 2 is short, the strong shearing is reduced, and the material performance is more stable. Further, feed portion 321 is located barrel 1 top and vertical setting, during the feeding, with AC foaming agent and leftover bits from side feeding hopper 322 feeding, directly fall into extrusion screw 2 through feed portion 321 in, the feeding is convenient high-efficient, practices thrift the energy consumption.
Example 2
The present embodiment is based on embodiment 1, and the technical solution is basically the same as embodiment 1, except that:
as shown in FIG. 5, a feeding switch 323 is provided in the feeding part 321 near the barrel 1, and when the side feeding device 32 is not needed, or the AC foaming agent and the scrap are not fed, the feeding switch 323 is closed to prevent the polypropylene raw material from overflowing from the side feeding device 32.
As shown in fig. 6, the feeding portion 321 is a cylindrical feeding portion, the feeding switch 323 includes a rotating shaft 324 rotatably installed inside the feeding portion 321 and arranged along one diameter of the cross section of the feeding portion 321, and a rotatable circular plate 325 fixedly installed outside the rotating shaft 324 and adapted to the inside of the feeding portion 321, one end of the rotating shaft 324 penetrates through the feeding portion 321 and is connected with a handle 326, when the feeding switch is used, the circular plate 325 is rotated by rotating the handle 326, when the circular plate 325 is coaxial with the feeding portion 321, the edge of the circular plate 325 abuts against the inner wall of the feeding portion 321, the circular plate 325 blocks the inside of the feeding portion 321 to complete closing, and when the central axis of the circular plate 325 is perpendicular to the central axis of the feeding portion 321, the feeding switch 323 is completely opened.
Example 3
The present embodiment is based on embodiment 1, and the technical solution is basically the same as embodiment 1, except that:
as shown in fig. 7 to 8, the feeding portion 321 is connected to a side portion of the barrel 1, a bent feeding channel is formed between an inside of the side feeding hopper 322 and an inside of the feeding portion 321, a feeding screw 327 is further disposed in the feeding portion 321, the feeding screw 327 is driven by a feeding motor 328, when in use, the feeding motor 328 drives the feeding screw 327 to rotate, so as to convey the AC foaming agent and the leftover materials to the extruding screw 2 inside the barrel 1, and when in use, the feeding screw 327 is always in a rotating operation state, so as to effectively prevent the polypropylene raw material from overflowing from the side feeding device 32.
As shown in fig. 9, the feeding portion 321 is disposed obliquely, the lower end of the feeding portion 321 is connected to the side of the barrel 1, the upper end of the feeding portion is connected to the bottom of the side feeding hopper 322, the angle of inclination of the feeding portion 321 to the horizontal direction is α, the value of α is 10 to 45 °, and 30 ° in this embodiment, which is beneficial to smooth feeding of the side feeding device 32, and reduces or avoids residues of AC foaming agent and leftover materials.
As shown in fig. 10, the feeding screw 327 is a twin screw, the rotation directions are opposite, the pushing directions for the AC foaming agent and the leftover materials are the same, the pushing effect is good, the efficiency is high, and the AC foaming agent and the leftover materials can be mixed in advance, which is beneficial to plasticizing and extruding, and improves the production efficiency and the production quality.
In this embodiment, the end of the feeding screw 327 far from one end of the cylinder 1 penetrates out of the cylinder 1 and is fixedly provided with mutually meshed spur gears with the same specification, one end of the feeding screw is fixedly connected with a rotating shaft of the feeding motor 328 through a coupler, the motor of the feeding motor 328 drives one of the feeding screws 327 to rotate, and the meshed spur gears drive the other feeding screw 327 to rotate.
Claims (7)
1. The utility model provides a polypropylene foaming master slice extruder, includes that barrel (1), rotation that one end was seted up and is extruded mouthful (11) and set up extrusion screw (2) in barrel (1) and set up at barrel (1) outside and communicate in the inside feeding device (3) of barrel (1), extrusion screw (2) are driven by driving motor (21), its characterized in that: the feeding device (3) comprises a front feeding device (31) arranged at the end part of the barrel body (1) and a side feeding device (32) arranged in the middle of the barrel body (1), wherein the front feeding device (31) is a feeding hopper with an upward opening, the lower part of the front feeding device is communicated with the extrusion screw (2), and the side feeding device (32) comprises a feeding part (321) connected with the barrel body (1) and a side feeding hopper (322) with an upward opening and positioned above the end part of the feeding part (321).
2. The polypropylene foamed master slice extruder according to claim 1, wherein: the feeding part (321) is positioned above the barrel (1) and is vertically arranged.
3. The polypropylene foaming master extruder according to claim 2, wherein: a feeding switch (323) is arranged in the feeding part (321) and close to the cylinder (1).
4. The polypropylene foaming master extruder according to claim 3, wherein: the feeding part (321) is a cylindrical feeding part, the feeding switch (323) comprises a rotating shaft (324) which is rotatably installed inside the feeding part (321) and arranged along one diameter of the cross section of the feeding part (321) and a rotatable circular plate (325) which is fixedly installed outside the rotating shaft (324) and is matched with the inside of the feeding part (321), and one end of the rotating shaft (324) penetrates out of the feeding part (321) and is connected with a handle (326).
5. The polypropylene foamed master sheet extruder according to claim 1 or 4, wherein: the feeding part (321) is connected to the side part of the cylinder body (1), a bent feeding channel is formed between the inside of the side feeding hopper (322) and the inside of the feeding part (321), a feeding screw (327) is further arranged in the feeding part (321), and the feeding screw (327) is driven by a feeding motor (328).
6. The polypropylene foaming master extruder according to claim 5, wherein: the feeding part (321) is obliquely arranged, the lower end of the feeding part is connected to the side of the barrel (1), the upper end of the feeding part is connected to the bottom of the side feeding hopper (322), the angle of inclination of the feeding part (321) and the horizontal direction is alpha, and the value of alpha is 10-45 degrees.
7. The polypropylene foaming master extruder according to claim 6, wherein: the feeding screw (327) is a double screw, the rotating directions are opposite, and the pushing directions of the AC foaming agent and the leftover materials are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921734500.2U CN211917645U (en) | 2019-10-16 | 2019-10-16 | Polypropylene foaming master slice extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921734500.2U CN211917645U (en) | 2019-10-16 | 2019-10-16 | Polypropylene foaming master slice extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211917645U true CN211917645U (en) | 2020-11-13 |
Family
ID=73319626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921734500.2U Active CN211917645U (en) | 2019-10-16 | 2019-10-16 | Polypropylene foaming master slice extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211917645U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113370489A (en) * | 2021-07-12 | 2021-09-10 | 苏州金韦尔机械有限公司 | Screw extruder with water-rotating cavity |
-
2019
- 2019-10-16 CN CN201921734500.2U patent/CN211917645U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113370489A (en) * | 2021-07-12 | 2021-09-10 | 苏州金韦尔机械有限公司 | Screw extruder with water-rotating cavity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101942140B (en) | Wood plastic composite foaming material and forming process and equipment thereof | |
| CN216329315U (en) | Banburying extruder | |
| CN214082726U (en) | Anti-blocking type screw extruder material mixing and discharging device | |
| CN201841624U (en) | Forming equipment of wood-plastic composite foaming material | |
| CN211917645U (en) | Polypropylene foaming master slice extruder | |
| CN210336527U (en) | Mixing roll is used in rubber raw materials processing | |
| CN111660533A (en) | Anti-blocking type screw extruder material mixing and discharging device | |
| CN210969863U (en) | Single screw extrusion device | |
| CN111873362B (en) | Extruder for producing plastic mpp power cable protection pipe | |
| CN213947386U (en) | Screw assembly for extruder | |
| CN214354048U (en) | Extruder is used in processing of polyethylene cable material | |
| CN110936580B (en) | High-temperature extrusion molding machine | |
| CN210061942U (en) | Laboratory double-stage extruder | |
| CN219618444U (en) | Plastic extruding machine for producing cable sheath material | |
| CN214562842U (en) | Energy-saving heating device for double-screw extruder | |
| CN214872578U (en) | PLA wood-plastic material extruder | |
| CN212312709U (en) | Extrusion device based on acid and alkali resistance high density polyethylene blow molding container | |
| CN215095516U (en) | Uniform-discharging efficient single-screw master slice extruder | |
| CN217047424U (en) | Double-screw plastic primary-secondary granulator extruder | |
| CN217514493U (en) | Extruder for plastic processing | |
| CN216760750U (en) | Novel extruding machine raw material particle feeding bin | |
| CN219820296U (en) | Halogen-free flame-retardant ABS plastic granulating device | |
| CN205130345U (en) | Plasticization machine with filtration | |
| CN216914660U (en) | Vertical foxing extruder | |
| CN217021370U (en) | Cutting mechanism of plastic extruder for producing modified polypropylene |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |