CN203305498U - Parallel double-screw extrusion unit - Google Patents
Parallel double-screw extrusion unit Download PDFInfo
- Publication number
- CN203305498U CN203305498U CN2013202677031U CN201320267703U CN203305498U CN 203305498 U CN203305498 U CN 203305498U CN 2013202677031 U CN2013202677031 U CN 2013202677031U CN 201320267703 U CN201320267703 U CN 201320267703U CN 203305498 U CN203305498 U CN 203305498U
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- CN
- China
- Prior art keywords
- screw
- parallel double
- screw extruder
- cylindrical shell
- threaded block
- 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.)
- Expired - Fee Related
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to molding of plastic materials, and particularly relates to a parallel double-screw extrusion unit. The parallel double-screw extrusion unit comprises a preheating device, a torque distributor, a gear box, an extrusion system and a cooling device, wherein the extrusion system comprises barrels 1, a central spindle 2 and threaded blocks 3. The parallel double-screw extrusion unit is characterized in that a machine barrel formed by the barrels 1 is in split type, and consists of a plurality of barrels 1; a screw rod is formed by combining the threaded blocks 3 sleeved on the central spindle 2; a neck bush in each barrel 1 is matched with each threaded block 3 in shape; each threaded block is any one or the combination of more than two of a conventional screw element, a reverse screw element, a kneading block, an S-shaped element, a tooth-shaped disk and a hexagonal prism element. According to the parallel double-screw extrusion unit, the conflict of universality and specificity of the screw rod can be combined well, the unit has multiple purposes and multiple functions, and the maintenance cost is reduced at the same time.
Description
Technical field
The utility model relates to the processing and forming of plastic material, is specifically related to a kind of parallel double-screw extruder group.
Background technology
Along with the development of Polymer Processing industry, polymer material molding and hybrid technique have been proposed to more and more and more and more higher requirement, single screw extrusion machine just can not meet these requirements in some aspects.With single screw extrusion machine, carry out filling-modified and add glass fibre reinforced modifiedly etc., mixing dispersion effect just undesirable.In addition, single screw extrusion machine especially is not suitable for the processing of granular material.In order to adapt to the requirement of hybrid technique in Polymer Processing, the particularly processing of PVC-U powder, parallel double-screw extruder are widely used in the devolatilization of filling, blend, modification, enhancing, chlorinated polypropylene and the super absorbent resin of rubber and plastic and engineering resin and process; Extruding of degradable masterbatch, polyamide polycondensation, polyurethane sudden reaction; The preparation of the granulation of carbon dust, magnetic, insulating material for cable, protective cover material, low smoke and low halogen type PVC CABLE MATERIALS and various crosslinked with silicane material etc.
Abroad, double screw extruder has been widely used in polymer processing field at present.PVC-U pellet, tubing, profile shapes, sheet material are nearly all to adopt double screw extruder machine-shaping.As continuous mixer, double screw extruder has been widely used for carrying out polyblend, filling and enhancing modification, also has to react to extrude.Double screw extruder is comprised of several parts such as transmission device, feeding device, barrel and screw rods, and the effect of each parts is similar to single screw extrusion machine.With single screw extrusion machine difference part, be in double screw extruder to have two parallel screw rods to be placed in same barrel.Double screw extruder has the form that many kinds are different, and main difference is the difference of screw-rod structure.The screw-rod structure of double screw extruder than the single screw extrusion machine complexity many, this is because the screw rod of double screw extruder also has such as direction of rotation, the problems such as mesh degree.
Twin-screw has the numerous species type, and it mainly can be divided into: 1.. from screw axis parallel run-in index and the tapered twin-screw of being divided into whether; The former axis of two screw rods is parallel to each other, and the axes intersect of latter's two screw rods at angle.The advantage that parallel double-screw extruder is compared to conical double screw extruder is: it is larger that parallel double-screw extruder has calendering length, calendering has the effect of strong plasticizing and homogenizing ability, and the screw rod average diameter is little, rotating speed is lower, therefore, average shear rate is also lower, and the calendering frequency is high, and effective time of staying also is not less than conical screw.2.. from the relative position of two screw rods, can be divided into again engagement type and non-engagement type, engagement type can be divided into again part engagement type and full engagement type.The spiral shell rib of a screw rod of non-engagement type does not reach in the screw channel of another root screw rod and goes, but not the distance that the axis that engagement type is two screw rods separates is less than two screw rod outer radius sums, and namely the spiral shell rib of a screw rod is inserted in the screw channel of another root screw rod and goes.According to mesh degree, engagement type can be divided into again part engagement and full engagement type.3.. from the difference of screw rod direction of rotation, can be divided into rotating Vortex and reverse rotation.As its name suggests, the direction of rotation of two screw rods of co-rotating twin screw extruder is identical, and the direction of rotation of two screw rods of Heterodromy double-screw extruder is opposite.
The large part of monoblock type double screw extruder and conical double screw extruder its each, namely installation is in use no longer taken and reconfigure to the parts such as screw rod, machine barrel, reduction box apart, and the material of production is single, the Reusability frequency of material is low.Along with scientific and technical development, many emerging materials emerge in an endless stream like the mushrooms after rain, the fixing parallel double-screw extruder of existing form can only be realized machine one use, can't adapt to many raw materials, multi-form instructions for use and applicable client's requirements at the higher level.
Summary of the invention
Single fixing for solving the form that in prior art, parallel double-screw extruder exists, can't realize the deficiency of a tractor serves several purposes, one-machine-multi-function, the utility model purpose is to provide a kind of parallel double-screw extruder group, this extrusion system has changed the fixed mode of flat two main frame extrusion systems in the past, make material can better obtain mixing and plasticizing, moisture and the moisture of special raw material are discharged automatically in the main frame operation process, successfully solved the unsettled problem of physical properties.
For achieving the above object, the utility model is by the following technical solutions: the parallel double-screw extruder group, comprise preheating device, torque divider, gear-box, extrusion system, cooling device, described extrusion system comprises cylindrical shell 1, mandrel 2, threaded block 3, it is characterized in that, the machine barrel that described cylindrical shell 1 forms is split type, is comprised of some cylindrical shells 1; Described screw rod is combined by the threaded block 3 be sleeved on mandrel 2, and the neck bush in cylindrical shell 1 matches with the shape of threaded block 3; Described threaded block is any one or the two or more combination in common flight element, reverse thread element, kneading block, S type element, toothed disc, six prism elements.
Described cylindrical shell 1, for the edge shell type, is comprised of inside and outside two parts, and inner is that the alloy edge overlaps, and the cylindrical shell body is 38CrMoAlA(high-quality nitrated steel), between cylindrical shell, be to be fixedly connected with bolt, unclamp bolt and split out piecemeal namely detachable.
Described torque divider and gear-box are also building block system, realize double screw extruder is changed over to counter rotating or rotating Vortex by changing torque divider.
Described S type leement duration is different size, and corresponding angle and length specification are complementary.
The length of described six prism elements is different size.
The utility model is compared and is had the following advantages with existing extruder:
1. screw rod of the present utility model is combined by the threaded block 3 be sleeved on mandrel 2, neck bush in cylindrical shell 1 is adjusted cooperation according to the shape of threaded block 3, thereby realize adjusting threaded block and cylindrical shell position according to technological requirements such as material kinds, obtain multiple effective combination, take into account preferably the versatility of screw rod and the contradiction of specificity, reached the purpose of a tractor serves several purposes, one-machine-multi-function.
2. cylindrical shell of the present utility model and screw rod all adopt " building block system " design, this structure can be carried out local replacing for screw rod and cylindrical shell element that wearing and tearing have occurred, and common double screw extruder is when maintenance of equipment, often want first heating, cooling system to be pulled down, and then the whole screw rod of extracting out, as long as can open whole machine barrel and the utility model unclamps connector, then keep in repair, both shortened maintenance time, also reduced labour intensity, avoid scrapping of whole screw rod or cylindrical shell, greatly reduced maintenance cost.
The accompanying drawing explanation
Fig. 1 is the structural representation of parallel double-screw extruder group described in the utility model.
Fig. 2 is the structural representation of S type element in parallel double-screw extruder group described in the utility model.
Fig. 3 is the front view of six prism elements in parallel double-screw extruder group described in the utility model.
Fig. 4 is the left view of six prism elements in parallel double-screw extruder group described in the utility model.
1-cylindrical shell, 2-mandrel, 3-threaded block.
The specific embodiment
Embodiment 1
As shown in Figure 1, the described parallel double-screw extruder group of the present embodiment, comprise that preheating device, torque divider, gear-box, extrusion system, cooling device, the described unit of extruding comprise cylindrical shell 1, mandrel 2, threaded block 3, and described cylindrical shell 1 is split type, described screw rod is combined by the threaded block 3 be sleeved on mandrel 2, and described threaded block 3 adopts common flight element, and the neck bush in cylindrical shell 1 matches with the shape of threaded block 3, the machine barrel that described cylindrical shell 1 forms is split type, is comprised of some cylindrical shells 1, described torque divider and gear-box are also building block system, realize double screw extruder is changed over to counter rotating or rotating Vortex by changing torque divider, the screw channel of intermeshing co-rotating twin-screw is non-enclosed construction, material is from after charge door to a screw rod, under friction pulls, screw channel along this root screw rod advances to narrow gap, below, after being subject to certain compression, another root screw rod holds up, and along another root screw channel, be fed forward under the friction towing on barrel surface, when material advances to narrow gap, top, repeat again this process, just on axis direction, moved certain distance, at the region of engagement material, will be subject to powerful partial cut effect, add between screw rod and screw rod and machine tube inner wall between the leakage current that produces of the gap that exists, make engagement type twin-screw in the same way produce good mixed effect.
As shown in Figure 1, 2, the threaded block 3 that the described parallel double-screw extruder group of the present embodiment adopts is the S type element of length 96mm, comprise preheating device, torque divider, gear-box, extrude unit, cooling device, the described unit of extruding comprises cylindrical shell 1, mandrel 2, threaded block 3; Described screw rod is combined by the threaded block 3 be sleeved on mandrel 2, and the neck bush in cylindrical shell 1 matches with the shape of threaded block 3; Described cylindrical shell 1, for the edge shell type, is comprised of inside and outside two parts, and inner is that the alloy edge overlaps, and the cylindrical shell body is 38CrMoAlA, between cylindrical shell, is to be fixedly connected with bolt, unclamps bolt and splits out piecemeal namely detachable; Described torque divider and gear-box are also building block system, realize double screw extruder is changed over to counter rotating or rotating Vortex by changing torque divider.
As shown in Fig. 1,3,4, the threaded block 3 that the described parallel double-screw extruder group of the present embodiment adopts is the six prism elements of length 56mm, this extrusion system comprises preheating device, torque divider, gear-box, extrudes unit, cooling device, draw-gear, meter counter, the described unit of extruding comprises cylindrical shell 1, mandrel 2, threaded block 3, it is characterized in that, the machine barrel that described cylindrical shell 1 forms is split type, is comprised of some cylindrical shells 1; Described screw rod is combined by the threaded block 3 be sleeved on mandrel 2, and the neck bush in cylindrical shell 1 matches with the shape of threaded block 3; Described torque divider and gear-box are also building block system, realize double screw extruder is changed over to counter rotating or rotating Vortex by changing torque divider.
Above description is to explanation of the present utility model, is not the restriction to utility model, and the utility model limited range is referring to claim, in the situation that without prejudice to spirit of the present utility model, the utility model can be done any type of modification.
Claims (5)
1. parallel double-screw extruder group, comprise preheating device, torque divider, gear-box, extrusion system, cooling device, described extrusion system comprises cylindrical shell (1), mandrel (2), threaded block (3), it is characterized in that, the machine barrel that described cylindrical shell (1) forms is split type, is comprised of some cylindrical shells (1); Described screw rod is combined by the threaded block (3) be sleeved on mandrel (2), and the neck bush in cylindrical shell (1) matches with the shape of threaded block (3); Described threaded block is any one or the two or more combination in common flight element, reverse thread element, kneading block, S type element, toothed disc, six prism elements.
2. parallel double-screw extruder group according to claim 1, is characterized in that, described cylindrical shell (1) is the edge shell type, by inside and outside two parts, formed, inner is alloy edge cover, and cylindrical shell is to be fixedly connected with bolt between (1), unclamps bolt and splits out piecemeal namely detachably.
3. parallel double-screw extruder group according to claim 1 and 2, is characterized in that, described torque divider and gear-box are also building block system, realizes double screw extruder is changed over to counter rotating or rotating Vortex by changing torque divider.
4. parallel double-screw extruder group according to claim 1, is characterized in that, described S type leement duration is different size.
5. parallel double-screw extruder group according to claim 1, is characterized in that, the length of described six prism elements is different size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202677031U CN203305498U (en) | 2013-05-16 | 2013-05-16 | Parallel double-screw extrusion unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202677031U CN203305498U (en) | 2013-05-16 | 2013-05-16 | Parallel double-screw extrusion unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203305498U true CN203305498U (en) | 2013-11-27 |
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ID=49611732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202677031U Expired - Fee Related CN203305498U (en) | 2013-05-16 | 2013-05-16 | Parallel double-screw extrusion unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203305498U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240861A (en) * | 2013-05-16 | 2013-08-14 | 青岛海洋鲨科技有限公司 | Parallel double-screw extruder unit |
-
2013
- 2013-05-16 CN CN2013202677031U patent/CN203305498U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240861A (en) * | 2013-05-16 | 2013-08-14 | 青岛海洋鲨科技有限公司 | Parallel double-screw extruder unit |
| CN103240861B (en) * | 2013-05-16 | 2016-03-09 | 青岛日能拉伸膜科技股份有限公司 | Parallel double-screw extruder group |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: QINGDAO RINENG STRETCH FILM TECHNOLOGY CO., LTD. Free format text: FORMER NAME: QINGDAO HAIYANGSHA TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Beiguan Industrial Park, Jiaozhou city of Shandong Province, Qingdao City, 266000 by two, North Road East, Patentee after: QINGDAO RINENG STRECH FILM TECHNOLOGY CO., LTD. Address before: 266000, Qingdao City, Shandong province Jiaozhou City North Industrial Park (Guangzhou Road West, East Shandong Road) Patentee before: Qingdao Haiyangsha Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20160516 |