CN2576466Y - Air-discharge type conic double-screw-bar plastic extruder cylinder - Google Patents
Air-discharge type conic double-screw-bar plastic extruder cylinder Download PDFInfo
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- CN2576466Y CN2576466Y CN02259855U CN02259855U CN2576466Y CN 2576466 Y CN2576466 Y CN 2576466Y CN 02259855 U CN02259855 U CN 02259855U CN 02259855 U CN02259855 U CN 02259855U CN 2576466 Y CN2576466 Y CN 2576466Y
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- groove
- exhaust
- cylindrical shell
- screw rod
- cylinder body
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- 230000011218 segmentation Effects 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 19
- 239000000463 material Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000007789 gas Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 15
- 238000000227 grinding Methods 0.000 description 7
- 230000003321 amplification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to an air-discharge type conic double-screw-rod plastic extruder cylinder, which is composed of a cylinder body (1) and a screw rod (2), wherein, the internal hole of the cylinder body (1) is provided with two intersecting conical holes, the internal parts of which are respectively provided with a conical screw rod. The utility model is characterized in that the intersecting point of two internal holes on the cylinder body (1) is provided with a groove (7), and the cylinder body (1) above the groove (7) is provided with an exhaust hole (3). The utility model is provided with an exhaust groove on a negative pressure zone which is provided with rarest raw materials; the upper side of the groove is provided with the exhaust hole; the cylinder body is provided with a very long exhaust space; all of reaction gases and water vapours can be totally and conveniently exhausted from the exhaust hole along the groove; moreover, when the screw rod rotates and pushes the raw materials of half rings, the raw materials can not be taken to the exhaust hole point. Accordingly, overflow of the materials of the exhaust hole can not be generated. In addition, since the cylinder body is provided with the exhaust groove, the screw rod does not need an exhaust section, and a series of problems caused by arrangement of the exhaust section can be overcome.
Description
The application is for application number is 02229223.3, the applying date is on April 27th, 2002, invention and created name is divided an application for " a kind of machine barrel of conical double-screw plastic extruder " patent application.
Technical field
The utility model relates to plastic extruder, particularly the machine barrel of exhaust conical double-screw plastic extruder.
Technical background
The machine barrel of conical double-screw plastic extruder all is made up of cylindrical shell and screw rod, and there is following defective in the machine barrel of existing conical double-screw plastic extruder:
1, as Fig. 2, the cylindrical shell 1 of existing technology is an integral body, workpiece is very big (generally long 1850 millimeters, 360 millimeters of diameters), its processing cylindrical shell method is: workpiece slow-speed of revolution rotation, boring bar 6 moving linearlies, car boring endoporus, because boring bar 6 must be less than the size (80 millimeters of diameters) of taper hole small end, so boring bar generally is the slender axles of a diameter below 65 millimeters, when car boring endoporus, its endoporus is because the cutter relieving phenomenon of boring bar, its endoporus bus forms a curved line, so need process endoporus repeatedly, the bus radian in hole could be controlled in the minimum zone.After the boring of workpiece endoporus machines, need grinding, because the poor rigidity of long emery wheel, rotating speed is also low, so grind very slowly, the cutter phenomenon is dug in very easy generation.Because above-mentioned reason, the endoporus of adding workpiece are two crossing cut holes, so 1 process-cycle of cylindrical shell is long, the difficulty of processing height, and also machining accuracy is very low;
2, because the restriction of cylindrical shell steam vent, so one section exhaust section of design on screw rod, and owing to raw material in the exhaust section is close to the operation of screw rod core, so that vacate certain space, allow gas well pass through steam vent smoothly, so caused in exhaust section, raw material can't make that raw material can't effectively obtain heat on the one hand from draw heat on the cylindrical shell, the influence plasticizing, cylindrical shell consuming electric power heating on the other hand, this section forms the high-temperature region on the cylindrical shell, thereby causes sallow material;
3, as Figure 10,11, cylindrical shell 1 has two steam vents 3, they open the top at two endoporus respectively, the two extruders of awl at work, raw material is to be present in the helicla flute of screw rod 2 with the semi-ring form, and, be extruded more in fact below the raw material of semi-ring form along with the rotation straight line of screw rod 2 moves forward, then be loose above or be negative pressure.When screw rod 2 rotates so that reducing is export-oriented, also awarded the power of an incorgruous inner rotary of raw material, some raw material is along with screw rod 2 inner rotary, can surpass the summit on screw rod 2 external diameters, owing to gravity falls, be present in screw rod 2 outer diameter zone 5 places, so, will cause steam vent 3 by the flash clogging.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of exhaust conical double-screw plastic extruder barrel is provided, and the steam vent on its cylindrical shell is difficult for blocked.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: it is made up of cylindrical shell and screw rod, the endoporus of cylindrical shell is two crossing bellmouths, be respectively equipped with two conical screws in two bellmouths, the two endoporus intersections on cylindrical shell top have groove, have a steam vent above the groove.
The utility model has air discharge duct at the most rare negative pressuren zone of raw material, has a steam vent above the groove, and a very long exhaust space has been arranged on the cylindrical shell, and all reacting gas and water vapour can both be discharged from steam vent along groove easily; And, when the raw material of semi-ring is passed in the screw rod rotation, can not take raw material to the steam vent place, so just the steam vent flash can not occur; In addition, owing to have air discharge duct on the cylindrical shell, screw rod does not just need exhaust section, has overcome a series of problems because of there being exhaust section to cause.
Description of drawings
Fig. 1 is the tube structure cutaway view of the utility model embodiment
Fig. 2 is the schematic diagram of existing cylindrical shell processing
Fig. 3 adds the schematic diagram in man-hour for the cylindrical shell of the utility model embodiment
The front view of the school rod that Fig. 4 uses when being each section of processing cylindrical shell
Fig. 5 is the left view of school rod
Schematic diagram when Fig. 6 is school rod use
Fig. 7 is the A-A amplification view of Fig. 1
Fig. 8 is the structure cutaway view of the utility model embodiment
Fig. 9 is the B-B amplification view of Fig. 8
Figure 10 is the structure cutaway view of existing machine barrel
Figure 11 is the C-C amplification view of Figure 10
Specific embodiments
The utility model embodiment is made up of cylindrical shell 1 and screw rod 2, the endoporus of cylindrical shell 1 is two crossing bellmouths, be respectively equipped with two conical screws 2 in two bellmouths, as shown in Figure 1, cylindrical shell 1 is combined by 6 sections segmentations, cylindrical shell of the present utility model is combined by multistage, so sectional processing cylindrical shell, and is easy to process.
Can see that from Fig. 3 because workpiece is short, so rotating speed can significantly improve, boring bar 6 can be selected for use and differs in size with being fit to taper hole that all size do not wait, so guaranteed favorable rigidity.
Because the endoporus of awl double shell is made up of two crossing taper holes, the center line of two taper hole also has an awl angle, so being divided into any section, cylindrical shell 1 processes the back assembling, be that anyone is out of one's imagine, because the cross section of cylindrical shell 1 is every mutually a little bit poorer, its taper hole size, centre-to-centre spacing all can change.
Processing each section cylindrical shell 1 method is: 1, according to the drawing requirement, process 4 school rods 9 (as Fig. 4,5); 2, will be wherein two be cut into several sections by process cylindrical shell more than 1 sections of needs, as cylindrical shell 1 being divided into 6 sections processing, then school rod 9 also is divided into 6 sections, other two stay standby; When 3, processing the cylindrical shell 1 of any section, at first process a hole, detect the hole taper and the degree of depth with corresponding school rod 9; 4, rotational workpieces is processed another hole, with the size (degree of depth of control school rod) in two holes, the clearance control in claimed range (as Fig. 6) between school, the two holes rod 9; 5, when other all sections of processing, the crack is controlled in the same claimed range between school, the two holes rod 9 of each section; 6, two long school rods 9 are mixed up fixing by the gap that adds man-hour, the barrel jacket with any section gets on then, detects the plan-position up and down of each section, with the method plain grinding plane of match grinding; 7, match grinding is good cylindrical shell links up, and becomes a complete workpiece; 8, two long school rods are cut into correspondent section, perform each size record in detail, match grinding examination criteria during as later batch process by good each section of cylindrical shell of match grinding.With the cylindrical shell 1 that the method processes, endoporus fineness, dimensional accuracy are far superior to all-in-one-piece processing, and its process-cycle shorten dramatically, more crucial is, because the awl double shell is in use, it is very serious to wear and tear as some position, very a certain section cylindrical shell of the replacing of method.
As Fig. 7, be inlaid with carbide chip 4 on the inner hole wall of cylindrical shell 1, carbide chip 4 is embedded in the top of cylindrical shell 1 inner hole wall, because the easiest being worn in top of cylindrical shell 1 inner hole wall.Its processing method is:
1, the cylindrical shell 1 of segmentation is mixed suitable awl mandrel, make it equal in cylindrical shell 1 macropore plane;
2, the circular hole of 10 millimeters of clamping drill diameters that on milling machine, (special tooling arranged), and make the circular hole of 10 millimeters of diameters exceed 2～3 millimeters of machine barrel endoporus;
3, withdraw from the awl mandrel, load onto the carbide alloy pole of 10 millimeters of diameters;
4, the two ends indentation, there of carbide alloy is burnt upward weldering;
5, according to the method for processing any section cylindrical shell 1, proofread and correct the grinding endoporus again, and other technological processes as before.
Like this, under the situation that does not increase great difficulty, improved hardness, in order to deal with regions wear, other nonabradable places maintain the original state.
As Fig. 8,9, the two endoporus intersections on cylindrical shell 1 top have groove 7, the length of groove 7 is 3/5 of cylindrical shell 1 length, have a steam vent 3 above the groove 7, groove 7 is opened at the most rare negative pressuren zone of raw material, and when the raw material of semi-ring is passed in the screw rod rotation, can not take raw material to groove 7 places, so just the steam vent flash can not occur.
The advantage that the two endoporus intersections on cylindrical shell 1 top have groove 7 is:
1, increased the exhaust scope, the gas that can make raw material produce in each process of reaction is effectively discharged, and has increased the serviceability rate of plastic products greatly;
2, can thoroughly eradicate the generation of steam vent flash;
3, owing to solved the exhaust difficulty, and the exhaust scope is big, makes the configuration design aspect of awl twin-screw increase wide space;
4, small-bore steam vent has replaced bigbore steam vent, makes the awl double shell increase area in the utilization of profile.
Screw rod 2 is that quantitatively the length of this section accounts for the 1/2-3/5 of whole screw rod 2 length by the spiral fluted spatial content of discharging opening section, and as Fig. 9, screw rod 2 is a polygon by the cross section of the bar core of charging aperture section.As we can see from the figure, raw material is squeezed at 8 places, zone of screw rod 2 bottoms and adjacent screw rod external diameter, and by loose, simultaneously, raw material moves forward along with the rotation of screw rod with the form of semi-ring again under situation about constantly being stirred all the time at regional 10 places.
Claims (3)
1, a kind of exhaust conical double-screw plastic extruder barrel, it is made up of cylindrical shell (1) and screw rod (2), the endoporus of cylindrical shell (1) is two crossing bellmouths, be respectively equipped with conical screw in two bellmouths, it is characterized in that: the two endoporus intersections on cylindrical shell (1) top have groove (7), have a steam vent (3) on the cylindrical shell (1) above the groove (7).
2, machine barrel as claimed in claim 1 is characterized in that: the length of groove (7) accounts for the 2/5-4/5 of cylindrical shell (1) length.
3, machine barrel as claimed in claim 1 or 2 is characterized in that: cylindrical shell (1) is combined by the segmentation more than 4 sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02259855U CN2576466Y (en) | 2002-09-29 | 2002-09-29 | Air-discharge type conic double-screw-bar plastic extruder cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02259855U CN2576466Y (en) | 2002-09-29 | 2002-09-29 | Air-discharge type conic double-screw-bar plastic extruder cylinder |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02229223 Division CN2535215Y (en) | 2002-04-27 | 2002-04-27 | Barrel of conical dual-screw plastic extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2576466Y true CN2576466Y (en) | 2003-10-01 |
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ID=33727081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02259855U Expired - Fee Related CN2576466Y (en) | 2002-09-29 | 2002-09-29 | Air-discharge type conic double-screw-bar plastic extruder cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2576466Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104441560A (en) * | 2014-10-29 | 2015-03-25 | 佛山市日丰企业有限公司 | Conical single-screw plastic extruder |
| CN114798788A (en) * | 2022-04-27 | 2022-07-29 | 西安热工研究院有限公司 | Extrusion container structure |
-
2002
- 2002-09-29 CN CN02259855U patent/CN2576466Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104441560A (en) * | 2014-10-29 | 2015-03-25 | 佛山市日丰企业有限公司 | Conical single-screw plastic extruder |
| CN114798788A (en) * | 2022-04-27 | 2022-07-29 | 西安热工研究院有限公司 | Extrusion container structure |
| CN114798788B (en) * | 2022-04-27 | 2024-05-14 | 西安热工研究院有限公司 | Extrusion cylinder structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FEIXIONG PLASTICS MACHINE MANUFACTURING CO., LTD. Free format text: FORMER OWNER: XIONG SHIMING Effective date: 20040625 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20040625 Address after: Conghua Liang Kou Zhen Tang Liao Cun Ying 510960 Guangzhou city schools Patentee after: Guangzhou Fei Fei Plastic Machinery Manufacturing Co., Ltd. Address before: 430005, No. 17 Yang first pier, Hanyang District, Hubei, Wuhan, China Patentee before: Xiong Shiming |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |