CN220973281U - Extrusion molding temperature control device - Google Patents
Extrusion molding temperature control device Download PDFInfo
- Publication number
- CN220973281U CN220973281U CN202322677660.0U CN202322677660U CN220973281U CN 220973281 U CN220973281 U CN 220973281U CN 202322677660 U CN202322677660 U CN 202322677660U CN 220973281 U CN220973281 U CN 220973281U
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- channel
- cylinder
- outer cylinder
- temperature control
- air
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- 238000001125 extrusion Methods 0.000 title claims abstract description 20
- 238000005192 partition Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 abstract description 14
- 239000004033 plastic Substances 0.000 description 25
- 229920003023 plastic Polymers 0.000 description 25
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- KHXKESCWFMPTFT-UHFFFAOYSA-N 1,1,1,2,2,3,3-heptafluoro-3-(1,2,2-trifluoroethenoxy)propane Chemical compound FC(F)=C(F)OC(F)(F)C(F)(F)C(F)(F)F KHXKESCWFMPTFT-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003000 extruded plastic Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses an extrusion molding temperature control device, which comprises an outer cylinder, wherein a screw is arranged in the outer cylinder, the screw can rotate around the axis of the screw, a fan housing is arranged at the outer side of the outer cylinder, the fan housing comprises a first air channel and a second air channel which are positioned at two sides, a first channel and a second channel are formed between the first air channel and the second air channel, the integral position of the first channel is higher than that of the second channel, the first channel and the second channel are positioned between the outer wall of the outer cylinder and the inner wall of the fan housing, and the path length of the first channel is smaller than that of the second channel; the outer cylinder comprises a first cylinder ring and a second cylinder ring, the first cylinder ring is provided with a plurality of first protruding parts, the second cylinder ring is provided with a plurality of second protruding parts, the outer side of the screw is provided with spiral blades, each blade comprises a hollow part, and the first protruding parts and the second protruding parts are positioned in the hollow parts. The utility model provides an extrusion molding temperature control device which has the advantages of high cooling speed and good cooling uniformity.
Description
Technical Field
The utility model relates to the technical field of extrusion molding equipment, in particular to an extrusion molding temperature control device.
Background
The screw extruder for plastic extrusion molding at present comprises an outer cylinder and a screw rod positioned in the cylinder, wherein molten plastic injected into the cylinder is axially conveyed along the cylinder by the rotation of the screw rod, and an electric heating wire is additionally arranged on the inner wall of the cylinder during conveying, so that the plastic is kept at a sufficient temperature in the conveying process to prevent the plastic from being cooled and hardened. When the mode of directly controlling temperature through the electric heating wire is applied to the extrusion molding of PFA plastic (copolymer of a small amount of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene), the molding quality of the PFA plastic is affected because the molding of the PFA plastic is sensitive to temperature change, particularly when the temperature is increased, heat cannot be dissipated in the cylinder in time.
Disclosure of utility model
The utility model aims to overcome the defects in the prior art and provide the extrusion molding temperature control device which has the advantages of high cooling speed and good cooling uniformity.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
The extrusion molding temperature control device comprises an outer cylinder, wherein a screw is arranged in the outer cylinder, the screw can rotate around the axis of the screw, a fan housing is arranged on the outer side of the outer cylinder, the fan housing comprises a first air channel and a second air channel which are positioned on two sides, a first channel and a second channel are formed between the first air channel and the second air channel, the integral position of the first channel is higher than that of the second channel, the first channel and the second channel are positioned between the outer wall of the outer cylinder and the inner wall of the fan housing, and the path length of the first channel is smaller than that of the second channel; the outer cylinder comprises a first cylinder ring and a second cylinder ring, the first cylinder ring is provided with a plurality of first protruding parts, the second cylinder ring is provided with a plurality of second protruding parts, the outer side of the screw is provided with spiral blades, each blade comprises a hollow part, and the first protruding parts and the second protruding parts are positioned in the hollow parts.
The first protruding part and the second protruding part are distributed in a staggered mode along the axial direction of the outer cylinder.
The two sides of the axial end face of the fan housing are provided with partition plates, and the inner walls of the partition plates are attached to the outer walls of the outer cylinders.
The first air channel is as high as the center of the outer cylinder, and the second air channel is arranged at the position of the center of the outer cylinder, which is deviated upwards.
The outer cylinder is provided with a feeding cylinder which is communicated with the inner part of the outer cylinder.
The first air channel is an air inlet, and the second air channel is an air outlet.
The screw can be electrified and heated.
The first protruding parts are axially distributed along the first barrel ring, and the second protruding parts are axially distributed along the second barrel ring.
The beneficial effects of the utility model are as follows:
through set up the fan housing in the urceolus outside for when the PFA plastics temperature in the urceolus is too high, the quick ventilation heat dissipation of outer section of thick bamboo outer wall in order to solve unable timely radiating problem in the urceolus, thereby improve the quality of the PFA material extrusion molding that is more sensitive to temperature variation.
The integral position of the first channel is higher than that of the second channel, the path length of the first channel is smaller than that of the second channel, so that when the first channel starts to intake air, air flow in the first channel with higher temperature is discharged through the second channel faster than air flow in the second channel, the cooling uniformity of the outer wall of the outer cylinder is realized, and the cooling uniformity of plastics in the outer cylinder is further realized.
For the cooling effect of cooperation fan housing, through at bellying one with section of thick bamboo wall two, bellying two with section of thick bamboo wall one's combined action under, make plastics produce along the radial direction's of urceolus flow to make the plastics of inlayer can flow to the outside, be favorable to the cooling of inboard plastics, improve cooling rate.
Drawings
FIG. 1 is a front cross-sectional view of an embodiment;
Fig. 2 is a side cross-sectional view of an embodiment.
In the figure: the device comprises an outer cylinder 1, a first cylinder ring 11, a first protruding part 111, a first cylinder wall 112, a second cylinder ring 12, a second protruding part 121, a second cylinder wall 122, a screw 2, blades 21, a hollow part 211, a feeding cylinder 3, a fan housing 4, a first air channel 41, a second air channel 42, a partition plate 43, a first channel 5 and a second channel 6.
Detailed Description
The technical scheme of the utility model is further described below through examples and with reference to the accompanying drawings.
As shown in fig. 1-2, an extrusion molding temperature control device comprises an outer cylinder 1, wherein a screw rod 2 is arranged in the outer cylinder 1, the screw rod 2 can rotate around an axis thereof through driving of an external driving structure, the screw rod 2 comprises blades 21, the blades 21 are spiral, hollow parts 211 are formed between the spiral blades 21 along the axial direction of the screw rod 2, the hollow parts 211 are also spiral, and the hollow parts 211 are flow channels of molten plastics.
As shown in fig. 1, the outer cylinder 1 has a cylindrical structure, and the outer cylinder 1 is coaxially provided with the screw 2. The outer cylinder 1 comprises a first cylinder ring 11 and a second cylinder ring 12, wherein the first cylinder ring 11 and the second cylinder ring 12 are of semicircular structures, and as shown in the direction of fig. 1, the first cylinder ring 11 is positioned above the second cylinder ring 12 and is fixedly connected up and down to form the outer cylinder 1.
The top of the first cylinder ring 11 is provided with a feeding cylinder 3, the feeding cylinder 3 is communicated with PFA plastic in a molten state, the feeding cylinder 3 is communicated with the inside of the outer cylinder 1, the PFA plastic in the molten state enters the outer cylinder 1 through the feeding cylinder 3, and when the screw 2 rotates, the blades 21 push the PFA plastic to be conveyed along the hollow part 211. The screw 2 can be electrified and heated to primarily control the temperature of the PFA plastic.
The first barrel ring 11 comprises a first barrel wall 112 positioned on the inner side, the first barrel ring 11 is provided with a plurality of first protruding parts 111, the first protruding parts 111 form annular protrusions inwards along the first barrel wall 112 towards the radial direction of the first barrel ring 11, and the first protruding parts 111 are axially distributed along the first barrel ring 11.
The second barrel ring 12 includes a second barrel wall 122 located at the inner side, the second barrel ring 12 is provided with a plurality of second protrusions 121, the second protrusions 121 form annular protrusions along the second barrel wall 122 inward toward the radial direction of the second barrel ring 12, and the second protrusions 121 are distributed in plurality along the axial direction of the second barrel ring 12.
The first protruding part 111 and the second protruding part 121 are distributed in a staggered manner along the axial direction of the outer cylinder 1, and one protruding side of the first protruding part 111 and one protruding side of the second protruding part 121 extend into the hollow part 211. In the orientation shown in fig. 1, the first protrusion 111 is below the second cylinder 122, and the second protrusion 121 is above the first cylinder 112, so that when the FPA plastic flows axially along the outer cylinder 1, the first protrusion 111 and the second cylinder 122, and the second protrusion 121 and the first cylinder 112 cooperate to generate a flow along the radial direction of the outer cylinder 1.
The outer side of the outer cylinder 1 is provided with a fan housing 4, the fan housing 4 is of a cylindrical structure, and the fan housing 4 and the outer cylinder 1 are coaxially arranged. As shown in fig. 2, the fan housing 4 includes a first air duct 41 and a second air duct 42 which are positioned at two sides, the first air duct 41 is an air inlet, the second air duct 42 is an air outlet, a first channel 5 and a second channel 6 are formed between the first air duct 41 and the second air duct 42, the first channel 5 and the second channel 6 are positioned between the outer wall of the outer cylinder 1 and the inner wall of the fan housing 4, after the first air duct 41 is subjected to air inlet, air flows through the first channel 5 or the second channel 6 and finally is discharged from the second air duct 42, so that the outer wall of the outer cylinder 1 is cooled, the temperature of the plastic in the outer cylinder 1 is cooled, the temperature reduction amplitude is controlled by controlling the air speed and combining the quality of the extruded plastic, and the rapid small-amplitude temperature reduction of the PFA plastic is realized, so that the temperature control of the PFA plastic is more accurate and rapid.
The two sides of the axial end face of the fan housing 4 are provided with a baffle plate 43, and the inner wall of the baffle plate 43 is attached to the outer wall of the outer cylinder 1.
When the first air channel 41 starts to intake air, because the air between the outer wall of the outer cylinder 1 and the inner wall of the fan housing 4 is heated by the outer cylinder 1, the hotter air is concentrated at the upper end of the outer cylinder 1, so that the first air channel 41 is arranged to be the same height as the center of the outer cylinder 1, as shown in the azimuth of fig. 2, the second air channel 42 is arranged at the position of the upper center of the outer cylinder 1, and the first air channel 41 and the second air channel 42 are respectively positioned at two sides of the outer cylinder 1. Therefore, the integral position of the first channel 5 is higher than that of the second channel 6, the path length of the first channel 5 is smaller than that of the second channel 6, so that when the first air channel 41 just starts to enter air, the air flow in the first channel 5 with higher temperature is discharged through the second air channel 42 faster than the air flow in the second channel 6, the uniformity of cooling the outer wall of the outer cylinder 1 is achieved, and the uniformity of cooling plastics is achieved.
After the air supply is stable, the air flow speed is higher, the time of the air flow passing through the first channel 5 or the second channel 6 is basically the same, and the heat dissipation effect of the air flow on each part of the outer wall of the outer cylinder 1 is basically consistent.
In order to match with the cooling effect of the fan housing 4, under the combined action of the first protruding part 111, the second barrel wall 122, the second protruding part 121 and the first barrel wall 112, plastics flow along the radial direction of the outer barrel 1, so that the plastics of the inner layer can flow to the outer side, the cooling of the plastics of the inner layer is facilitated, and the cooling speed is increased.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (8)
1. An extrusion molding temperature control device which is characterized in that: the novel air conditioner comprises an outer cylinder (1), wherein a screw rod (2) is arranged in the outer cylinder (1), the screw rod (2) can rotate around an axis of the screw rod, a fan housing (4) is arranged on the outer side of the outer cylinder (1), the fan housing (4) comprises a first air duct (41) and a second air duct (42) which are arranged on two sides, a first channel (5) and a second channel (6) are formed between the first air duct (41) and the second air duct (42), the integral position of the first channel (5) is higher than that of the second channel (6), the first channel (5) and the second channel (6) are arranged between the outer wall of the outer cylinder (1) and the inner wall of the fan housing (4), and the path length of the first channel (5) is smaller than that of the second channel (6).
The outer cylinder (1) comprises a first cylinder ring (11) and a second cylinder ring (12), the first cylinder ring (11) is provided with a plurality of first protruding portions (111), the second cylinder ring (12) is provided with a plurality of second protruding portions (121), spiral blades (21) are arranged on the outer side of the screw (2), the blades (21) comprise hollow portions (211), and the first protruding portions (111) and the second protruding portions (121) are partially located in the hollow portions (211).
2. An extrusion temperature control apparatus as set forth in claim 1, wherein: the first protruding part (111) and the second protruding part (121) are distributed in a staggered mode along the axial direction of the outer cylinder (1).
3. An extrusion temperature control apparatus as set forth in claim 1, wherein: the two sides of the axial end face of the fan housing (4) are provided with partition plates (43), and the inner walls of the partition plates (43) are attached to the outer wall of the outer cylinder (1).
4. An extrusion temperature control apparatus as set forth in claim 1, wherein: the first air duct (41) is the same height as the center of the outer cylinder (1), and the second air duct (42) is arranged at the position, which is deviated from the center of the outer cylinder (1), of the outer cylinder.
5. An extrusion temperature control apparatus as set forth in claim 1, wherein: the feeding barrel (3) is arranged on the outer barrel (1), and the feeding barrel (3) is communicated with the inner part of the outer barrel (1).
6. An extrusion temperature control apparatus as set forth in claim 1, wherein: the first air channel (41) is an air inlet, and the second air channel (42) is an air outlet.
7. An extrusion temperature control apparatus as set forth in claim 1, wherein: the screw (2) can be electrically heated.
8. An extrusion temperature control apparatus as set forth in claim 1, wherein: the first protruding parts (111) are axially distributed along the first cylinder ring (11), and the second protruding parts (121) are axially distributed along the second cylinder ring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322677660.0U CN220973281U (en) | 2023-09-28 | 2023-09-28 | Extrusion molding temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322677660.0U CN220973281U (en) | 2023-09-28 | 2023-09-28 | Extrusion molding temperature control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220973281U true CN220973281U (en) | 2024-05-17 |
Family
ID=91055317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322677660.0U Active CN220973281U (en) | 2023-09-28 | 2023-09-28 | Extrusion molding temperature control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220973281U (en) |
-
2023
- 2023-09-28 CN CN202322677660.0U patent/CN220973281U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |