CN221112798U - POF five-layer coextrusion composite machine head - Google Patents
POF five-layer coextrusion composite machine head Download PDFInfo
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- CN221112798U CN221112798U CN202322448403.XU CN202322448403U CN221112798U CN 221112798 U CN221112798 U CN 221112798U CN 202322448403 U CN202322448403 U CN 202322448403U CN 221112798 U CN221112798 U CN 221112798U
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- head
- mandrel
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- channel
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- 239000002131 composite material Substances 0.000 title claims abstract description 11
- 238000001125 extrusion Methods 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 29
- 238000009826 distribution Methods 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims description 25
- 238000013329 compounding Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229920006257 Heat-shrinkable film Polymers 0.000 description 6
- 238000010096 film blowing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a POF five-layer co-extrusion composite machine head, which comprises a mandrel, a split head and an extrusion head, wherein the split head and the mandrel are coaxially arranged, five split material distribution channels are coaxially arranged in the split head and the mandrel, a sealing end cover which is detachably connected is arranged at one end of the split head, which is far away from the extrusion head, and a feed inlet matched with the split material distribution channels is arranged on the sealing end cover; the extrusion head is provided with a diversion channel and a confluence channel along the flow direction of raw materials, the distances from the outlet ends of the diversion channels to the mandrel are equal, the outlet ends of the confluence channels are provided with a confluence layer and a die, the top of the mandrel is detachably connected with the diversion head, and the bottom of the mandrel is matched with the die. The extrusion head is replaced according to the diameter of the confluence channel, so that the diameter of the confluence channel in the machine head is not limited by the distribution disc during adjustment, and the purpose of controlling the size of the machine head is achieved.
Description
Technical Field
The utility model relates to the technical field of extruder heads, in particular to a POF five-layer co-extrusion composite extruder head.
Background
The POF heat-shrinkable film is a novel heat-shrinkable environment-friendly packaging material which is popular in recent years due to better air tightness, high temperature resistance, oil resistance, heat sealability and mechanical properties. At present, the POF heat-shrinkable film gradually replaces the PVC heat-shrinkable film, and becomes the heat-shrinkable film product with the fastest market demand and the most extensive application.
The machine head of the film blowing machine is a key component of the film blowing machine, when the five-layer co-extrusion POF heat-shrinkable film is compounded and extruded, the film blowing material is compounded in the machine head, the existing machine head structure comprises a core shaft and a plurality of distribution discs overlapped on the outer side of the core shaft, a summarizing flow channel is formed between the core shaft and the distribution discs, the periphery of the distribution discs is also provided with a material inlet, and the machine head device of the five-layer co-extrusion POF heat-shrinkable film compounding machine head disclosed in the Chinese patent with the application number of CN201621082342.3 adopts a similar structure, but has the following defects: when the machine head is used, the diameter of the converging flow passage is limited by 5 distribution discs, so that the adjustment is inconvenient, in practical application, the production of the film size and the diameter of the converging flow passage have great relation, when the diameter of the converging flow passage needs to be enlarged, the existing machine head can only use larger distribution discs, and as a result, the machine head is oversized and heavy.
Disclosure of utility model
In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to provide a POF five-layer coextrusion composite machine head, wherein a POF thermal shrinkage film is prepared by five-layer coextrusion, so that the coextrusion composite machine head is designed and optimized, and the diameter of a confluence flow passage in the machine head is not limited by a distribution disc during adjustment.
To achieve the purpose, the utility model adopts the following technical scheme:
The utility model provides a POF five-layer co-extrusion composite machine head, which comprises a mandrel, a flow dividing head and an extrusion head, wherein the flow dividing head and the extrusion head are coaxially arranged with the mandrel, the flow dividing head and the extrusion head are detachably connected, five material dividing channels are coaxially arranged in the flow dividing head and coaxially arranged with the mandrel, the material dividing channels are annular, a sealing end cover which is detachably connected is arranged at one end, far away from the extrusion head, of the flow dividing head, and a feed inlet matched with the material dividing channels is arranged on the sealing end cover; the extrusion head is provided with a flow dividing channel and a converging channel along the flow direction of raw materials, the flow dividing channel is provided with five, five the flow dividing channel is matched with the distribution channel, the distance from the outlet end of the flow dividing channel to the mandrel is equal, the outlet end of the converging channel is provided with a converging layer and a mouth die, the top of the mandrel is detachably connected with the flow dividing head, and the bottom of the mandrel is matched with the mouth die. Furthermore, the shunt head, the sealing end cover, the shunt head and the transition part are all connected by bolts so as to be convenient for disassembly and connection.
The extrusion head is provided with a transition part near one end of the split head, the transition part and the extrusion head are integrally formed, the transition part is provided with a transition runner matched with the distribution runner, the inlet end of the transition runner is communicated with the outlet end of the distribution runner, and the outlet end of the transition runner is communicated with the inlet end of the distribution runner.
The preferable technical scheme of the utility model is that the converging channel and the mandrel are fixedly provided with mutually matched annular convex blocks to form a spiral channel, and the extrusion head is provided with a heating layer matched with the converging channel. So as to facilitate the compounding of the materials of each layer.
The preferable technical scheme of the utility model is that a shaft cover is fixedly arranged at the top of the mandrel, the shaft cover is detachably connected with the split head through a bolt, the mandrel and the die are provided with a matched gas flow passage, and the shaft cover is provided with a gas inlet communicated with the gas flow passage.
The beneficial effects of the utility model are as follows:
The utility model discloses a make the material flow direction extrusion head's of axial flow direction from distributing the material way the reposition of redundant personnel way, then get into in the confluence way, the upper material is compound with the material of lower floor in proper order to through in the confluence way moulding, finally extrude out by the bush behind the confluence layer, so can only change extrusion head according to the diameter of the confluence way of needs can, make the confluence runner diameter in the aircraft nose not receive the restriction of distribution disc when the adjustment, in order to reach the purpose of control aircraft nose size.
Drawings
FIG. 1 is a schematic view of the external structure of a five-layer co-extrusion composite nose for POF provided in an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a five-layer co-extrusion composite nose for POF according to an embodiment of the present utility model;
FIG. 3 is a schematic top view of a diverter head according to one embodiment of the present utility model;
FIG. 4 is a schematic view of another view of a shunt head according to an embodiment of the present utility model;
In the figure:
1. A mandrel; 2. a shunt head; 3. an extrusion head; 21. dividing and proportioning the material channels; 22. sealing the end cover; 221. a feed inlet; 31. a sub-runner; 32. a converging channel; 33. a confluence layer; 34. a die; 30. a transition section; 301. a transition flow passage; 35. a heating layer; 11. a shaft cover; 12. a gas flow passage; 111. an air inlet; 36. and an annular bump.
Detailed Description
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in the figure, the POF five-layer coextrusion composite machine head comprises a mandrel 1, a flow dividing head 2 and an extrusion head 3 which are coaxially arranged with the mandrel 1, wherein the flow dividing head 2 and the extrusion head 3 are detachably connected, five material dividing channels 21 are coaxially arranged in the flow dividing head 2 and the mandrel 1, the material dividing channels 21 are annular, a sealing end cover 22 which is detachably connected is arranged at one end, far away from the extrusion head 3, of the flow dividing head 2, and a feeding port 221 matched with the material dividing channels 21 is arranged on the sealing end cover 22; the extrusion head 3 is provided with a diversion channel 31 and a confluence channel 32 along the raw material flowing direction, the diversion channel 31 is provided with five diversion channels 31, the five diversion channels 31 are matched with the distribution channel 21, the distances from the outlet ends of the five diversion channels 31 to the mandrel 1 are equal, the outlet end of the confluence channel 32 is provided with a confluence layer 33 and a die 34, the top of the mandrel 1 is detachably connected with the diversion head 2, and the bottom of the mandrel 1 is matched with the die 34. Different from the traditional method that the materials for distributing the discs flow into the converging flow passage from the radial direction of the discs, the materials in the scheme flow into the flow dividing passage 31 of the extruding head 3 from the axial direction of the distributing material passage 21 and then enter the converging flow passage 32, the materials on the upper layer are compounded with the materials on the lower layer in sequence, and finally are extruded by the die 34 after passing through the converging layer 33 through shaping in the converging flow passage 32, so that the extruding head 3 can be replaced according to the diameter of the converging flow passage 32 as required, and the size of each layer of distributing discs is not required to be adjusted to adapt to the change of the diameter of the converging flow passage 32, thereby achieving the purpose of controlling the size of the machine head; further, for good compounding of the materials of each layer, the converging channel 32 and the mandrel 1 are fixedly provided with mutually matched annular projections 36 to form a spiral flow channel, the extrusion head 3 is provided with a heating layer 35 matched with the converging channel 32, and further, the flow dividing head 2, the sealing end cover 22, the flow dividing head 2 and the transition part 30 are all connected by bolts so as to ensure convenience in replacement.
Preferably, one end of the extrusion head 3, which is close to the split head 2, is provided with a transition part 30, the transition part 30 and the extrusion head 3 are integrally formed, the transition part 30 is provided with a transition runner 301 matched with the distribution runner 21, the inlet end of the transition runner 301 is communicated with the outlet end of the distribution runner 21, and the outlet end of the transition runner 301 is communicated with the inlet end of the split runner 31. So can make things convenient for the dismantlement of extrusion head 3 and reposition of redundant personnel head 2 to connect, guarantee the smoothness nature that the material flowed into runner 31 from distributing the material way 21 through transition runner 301, can set up the sealing gasket in order to guarantee holistic leakproofness between transition portion 30 and reposition of redundant personnel head 2 simultaneously in order to guarantee the leakproofness.
Preferably, the top of the mandrel 1 is fixedly provided with a shaft cover 11, the shaft cover 11 and the shunt head 2 are detachably connected through bolts, the mandrel 1 and the die 34 are provided with matched gas flow channels 12, and the shaft cover 11 is provided with a gas inlet 111 communicated with the gas flow channels 12.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the utility model. The utility model is not to be limited by the specific embodiments disclosed herein, but rather, embodiments falling within the scope of the appended claims are intended to be embraced by the utility model.
Claims (5)
1. The POF five-layer coextrusion composite machine head comprises a mandrel (1), and is characterized in that: the novel plastic extrusion device is characterized by further comprising a flow dividing head (2) and an extrusion head (3) which are coaxially arranged with the mandrel (1), wherein the flow dividing head (2) is detachably connected with the extrusion head (3), five distribution material channels (21) are coaxially arranged in the flow dividing head (2) and the mandrel (1), the distribution material channels (21) are annular, a sealing end cover (22) which is detachably connected is arranged at one end, far away from the extrusion head (3), of the flow dividing head (2), and a feeding port (221) matched with the distribution material channels (21) is arranged on the sealing end cover (22);
The extrusion head (3) is provided with a diversion channel (31) and a confluence channel (32) along the raw material flowing direction, the diversion channel (31) is provided with five, five the diversion channel (31) is matched with the distribution channel (21), five the outlet end of the diversion channel (31) is equal to the distance of the mandrel (1), the outlet end of the confluence channel (32) is provided with a confluence layer (33) and a mouth die (34), the top of the mandrel (1) and the diversion head (2) are detachably connected, and the bottom of the mandrel (1) is matched with the mouth die (34).
2. The POF five-layer co-extrusion compounding head as defined in claim 1, wherein:
The extrusion head (3) is close to one end of the flow distribution head (2) and is provided with a transition part (30), the transition part (30) and the extrusion head (3) are integrally formed, the transition part (30) is provided with a transition flow passage (301) matched with the distribution material passage (21), the inlet end of the transition flow passage (301) is communicated with the outlet end of the distribution material passage (21), and the outlet end of the transition flow passage (301) is communicated with the inlet end of the flow distribution passage (31).
3. The POF five-layer co-extrusion compounding head as defined in claim 2, wherein:
The shunt head (2) and the sealing end cover (22), and the shunt head (2) and the transition part (30) are all connected through bolts.
4. The POF five-layer co-extrusion compounding head as defined in claim 1, wherein:
The extrusion head (3) is provided with a heating layer (35) matched with the confluence channel (32).
5. The POF five-layer co-extrusion compounding head as defined in claim 1, wherein:
The top of the mandrel (1) is fixedly provided with a shaft cover (11), the shaft cover (11) is detachably connected with the shunt head (2) through bolts, the mandrel (1) and the die (34) are provided with a matched gas flow passage (12), and the shaft cover (11) is provided with a gas inlet (111) communicated with the gas flow passage (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322448403.XU CN221112798U (en) | 2023-09-09 | 2023-09-09 | POF five-layer coextrusion composite machine head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322448403.XU CN221112798U (en) | 2023-09-09 | 2023-09-09 | POF five-layer coextrusion composite machine head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221112798U true CN221112798U (en) | 2024-06-11 |
Family
ID=91343227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322448403.XU Active CN221112798U (en) | 2023-09-09 | 2023-09-09 | POF five-layer coextrusion composite machine head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221112798U (en) |
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2023
- 2023-09-09 CN CN202322448403.XU patent/CN221112798U/en active Active
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