CN2547501Y - Reciprocating screw extruding structure - Google Patents
Reciprocating screw extruding structure Download PDFInfo
- Publication number
- CN2547501Y CN2547501Y CN02227607U CN02227607U CN2547501Y CN 2547501 Y CN2547501 Y CN 2547501Y CN 02227607 U CN02227607 U CN 02227607U CN 02227607 U CN02227607 U CN 02227607U CN 2547501 Y CN2547501 Y CN 2547501Y
- Authority
- CN
- China
- Prior art keywords
- screw
- reciprocating
- groove
- screw rod
- reciprocating screw
- 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
-
- 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
- B29C48/68—Barrels or cylinders
- B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
- B29C48/687—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having projections with a short length in the barrel direction, e.g. pins
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a reciprocating screw extruding structure, which comprises a machine tube, a screw and a pin, wherein, the screw is arranged in the machine tube. The pin is arranged on the inner surface of a lining of the machine tube opposite to the worm of the screw. The worm of the screw is provided with a cut groove. The cut groove of a front worm is staggered with the cut groove of a back groove. The reciprocating screw extruding structure can effectively reduce leakage flow rate and keep the material average mixing between the worms evenly, thereby improving fixing quality and extruding quantity of material. The utility model is of simple structure and evident action effect; therefore, the utility model can be applicable to improve the original reciprocating screw extruding machine for improving the producing efficiency and product quality.
Description
(1) technical field
The utility model relates to extrusion equipment, and particularly a kind of reciprocating screw is extruded structure.
(2) background technology
Thereby the reciprocating screw extruder,, owing to its screw rod, machine barrel have particular structure and novel operation principle has been obtained using widely in invention in 1940 by German Heinz List; It is not only the ideal equipment of producing plastics powder and pellet, but also is applicable to compounding, granulation and the moulding of engineering plastics, wire cable material, soft or hard PVC, thermosetting plastics and various color masterbatches.The structure of extruding of existing reciprocating screw extruder mainly is made of machine barrel, screw rod, pin, machine barrel is a split type structure, in axial direction go up by rule at the machine barrel inner surface pin is installed, screw flight is a discontinuous construction, and the groove of disconnection is arranged at the certain position of screw thread; Screw rod is also made axially reciprocating according to certain rules when rotating continuously, pin plays immixture as agitating element to material.In the patent No. is the structure that all discloses this reciprocating screw extruder in " the Chinese plastics " in 99229982.9 Chinese utility model patent " reciprocating motion extruder " and in January, 2002 in " Reciprocating Pin Twin-Screw Extruder design principle " literary composition, but the screw thread of existing this reciprocating screw extruder disconnects groove becomes " one " font to arrange vertically, that is each screw thread disconnection groove interconnects, such version makes that disconnecting the groove place at screw thread is easy to produce leakage current, if the disconnection area of screw thread is too big, leakage current may be very serious, thereby may reduce the output of extruder greatly.
(3) summary of the invention
The purpose of this utility model is to overcome the shortcoming of prior art, and the reciprocating screw that provide a kind of effective minimizing leakage current, better improves output is extruded structure.
The purpose of this utility model is achieved through the following technical solutions: this reciprocating screw is extruded structure and is comprised machine barrel, screw rod, pin, and screw rod is installed in the machine barrel, and pin is installed in the machine barrel sleeve inner surface relative with screw flight; Screw thread on the screw rod is provided with the disconnection groove, and the disconnection groove of front and back screw thread staggers mutually.
The disconnection groove number of each helical pitch setting of described screw thread is 2～6.
The disconnection groove of described screw thread becomes axial symmetry to arrange along the screw rod center.
Described screw rod can be monolithic construction, and promptly screw thread and screw rod body are whole makes, and is inseparable structure.
Described screw rod also can be the releasable structure, includes screwing element and mandrel, and screwing element becomes releasable to be sleeved on the mandrel; This screw flight element can be adjusted replacing as required.
The utility model compared with prior art has following advantage: stagger mutually because this reciprocating screw is extruded the disconnection groove of the screw flight of structure, that is it is all relative and do not disconnect groove and directly be communicated with before and after the disconnection groove of screw thread with other with adjacent thread, so when screw rod rotates continuously according to certain rules and makes axially reciprocating, the material that the screw thread of flowing through disconnects the groove place is subjected to stopping of front and back screw thread simultaneously, thereby can reduce material leakage current amount effectively, guarantee that material is evenly mixing between screw thread, improve the mixing quality of material, keep higher output and the melting effect uniformly extruded thereby make reciprocating screw extrude function; The utility model is simple in structure, and action effect is obvious, can be applicable to improve original reciprocating screw extruder, improves its production efficiency and product quality.
(4) description of drawings
Fig. 1 is the axial cutaway view that the utility model reciprocating screw is extruded a kind of embodiment of structure.
Fig. 2 is the radial cross-section that reciprocating screw shown in Figure 1 is extruded the structure embodiment.
Fig. 3 is the axial cutaway view of the utility model reciprocating screw another kind of embodiment of extruding structure.
Fig. 4 is the radial cross-section that the utility model reciprocating screw is extruded another embodiment of structure.
(5) specific embodiment
Below in conjunction with the embodiment accompanying drawing the utility model is done further concrete description, but embodiment of the present utility model is not limited thereto.
Embodiment 1
Fig. 1 and Fig. 2 show concrete mode of the present utility model, by Fig. 1 and Fig. 2 as seen, this reciprocating screw is extruded structure and is included machine barrel 2, screw rod 1, pin 3, machine barrel 2 is split type structures, constitute by the two parts symmetrical cooperation, machine barrel 2 installed inside have lining 5, lining 5 inner surfaces symmetry is installed four row's pins 3, screw rod 1 is installed in the lining 5, the screw thread of screw rod 1 is relative with pin 3 cooperations, and pin 3 has four and disconnects grooves 4 between adjacent thread on each helical pitch of screw flight, before and after the disconnection groove 4 of screw thread stagger mutually, that is disconnection groove 4 front and back of screw thread are all relative with screw thread and do not disconnect groove with other and directly be communicated with; When this reciprocating screw is extruded arrangement works, material flows between screw thread, the cleaning of 3 double threads of pin, to the conveying of material and the effect that material is distributed and disperses to mix, disconnection groove 4 on the screw thread can make logistics produce the countercurrent movement of " ∞ " shape between adjacent thread, " ∞ " shape countercurrent movement has added very useful axial mixing effect when material is radially mixing, can improve the melting effect of material, screw thread disconnects can avoid material to produce serious leakage current from directly flowing through between the screw thread disconnection groove 4 staggering mutually of groove 4, and action effect is obvious.
Fig. 3 shows the another kind of embodiment of the utility model, as seen from Figure 3, has six on each helical pitch of screw flight and disconnects groove 6, and the disconnection groove 6 of front and back screw thread staggers mutually, and Fig. 1 is similar among its concrete shape and the embodiment 1.
Fig. 4 shows another embodiment of the utility model, as seen from Figure 4, the disconnection groove 7,8 of continuous two screw threads is communicated with on the screw rod in this embodiment, but it is stagger mutually, that is relative with three start screw and directly be not communicated with its disconnection groove 9 with the disconnection groove 9 of three start screw behind two screw threads.So also can avoid material to produce serious leakage current from directly flowing through between the whole screw flight disconnection groove.The structure of present embodiment other parts is with embodiment 1.
Claims (5)
1, a kind of reciprocating screw is extruded structure, comprise machine barrel (2), screw rod (1), pin (3), screw rod (1) is installed in the machine barrel (2), pin (3) is installed in machine barrel lining (5) inner surface relative with screw flight, the screw thread of screw rod (1) is provided with and disconnects groove 4, and it is characterized in that: the disconnection groove (4) of front and back screw thread staggers mutually.
2, reciprocating screw according to claim 1 is extruded structure, it is characterized in that: the quantity of the disconnection groove (4) that each helical pitch of described screw thread is provided with is 2～6.
3, reciprocating screw according to claim 1 is extruded structure, it is characterized in that: the disconnection groove (4) of described screw thread is along screw rod (1) central shaft symmetric arrays.
4, reciprocating screw according to claim 1 is extruded structure, it is characterized in that: the screw thread of described screw rod (1) and screw rod body are whole to be made.
5, reciprocating screw according to claim 1 is extruded structure, it is characterized in that: described screw rod (1) includes screwing element and mandrel, and screwing element is sleeved on the mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02227607U CN2547501Y (en) | 2002-05-21 | 2002-05-21 | Reciprocating screw extruding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02227607U CN2547501Y (en) | 2002-05-21 | 2002-05-21 | Reciprocating screw extruding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2547501Y true CN2547501Y (en) | 2003-04-30 |
Family
ID=33704354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02227607U Expired - Fee Related CN2547501Y (en) | 2002-05-21 | 2002-05-21 | Reciprocating screw extruding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2547501Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371155C (en) * | 2003-07-25 | 2008-02-27 | 任守仁 | Film forming technique by melting discarded material of polyethylene film one-off and screw structure for degree of tightness in film formation dedicated extruder |
| CN104290175A (en) * | 2014-10-21 | 2015-01-21 | 江苏诚盟装备股份有限公司 | Reciprocating type extruding machine for pugging of honeycomb ceramics |
-
2002
- 2002-05-21 CN CN02227607U patent/CN2547501Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371155C (en) * | 2003-07-25 | 2008-02-27 | 任守仁 | Film forming technique by melting discarded material of polyethylene film one-off and screw structure for degree of tightness in film formation dedicated extruder |
| CN104290175A (en) * | 2014-10-21 | 2015-01-21 | 江苏诚盟装备股份有限公司 | Reciprocating type extruding machine for pugging of honeycomb ceramics |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |