CN103358499A - Anti-reflux device - Google Patents
Anti-reflux device Download PDFInfo
- Publication number
- CN103358499A CN103358499A CN2012104318315A CN201210431831A CN103358499A CN 103358499 A CN103358499 A CN 103358499A CN 2012104318315 A CN2012104318315 A CN 2012104318315A CN 201210431831 A CN201210431831 A CN 201210431831A CN 103358499 A CN103358499 A CN 103358499A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- packing element
- backflow device
- crossing
- crossed
- 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.)
- Pending
Links
- 230000000151 anti-reflux effect Effects 0.000 title abstract 3
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 239000004033 plastic Substances 0.000 claims abstract description 18
- 229920003023 plastic Polymers 0.000 claims abstract description 18
- 238000012856 packing Methods 0.000 claims description 31
- 239000003292 glue Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract 5
- 235000017491 Bambusa tulda Nutrition 0.000 abstract 5
- 241001330002 Bambuseae Species 0.000 abstract 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract 5
- 239000011425 bamboo Substances 0.000 abstract 5
- 238000005259 measurement Methods 0.000 abstract 2
- 230000002411 adverse Effects 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 4
- 210000002421 cell wall Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides an anti-reflux device, including the screw rod, locate the gluey head of crossing of this screw rod one end and the gluey section of thick bamboo of crossing of cover locating on this screw rod, be equipped with the first clearance that supplies the molten plastics to pass through between this screw rod and this gluey section of thick bamboo, this anti-reflux device still includes the sealing washer that is fixed in on this screw rod, and this gluey section of thick bamboo of crossing is located between this gluey head of crossing and this sealing washer, during the measurement, this screw rod is rotatory and drive the molten plastics and flow towards first clearance under the exogenic action, and then promote to cross to form a second clearance that supplies the molten plastics to pass through and communicate with this first clearance between this gluey section of thick bamboo and this sealing washer, after the measurement, the opposite direction is rotatory this screw rod makes this screw rod move towards this gluey section of thick bamboo of crossing.
Description
Technical field
The present invention relates to a kind of anti-backflow device, relate in particular to a kind of anti-backflow device that is applied to injection (mo(u)lding) machine.
Background technology
Plastic-injection moulding machine generally comprises a syringe, and this syringe has a heating cylinder, and one is rotatable and can advance and retreat and be installed on movably screw rod in the heating cylinder.In metering process, screw rod is dropped back with conventional direction rotation, so that resin flows out from funnel, melts and is stored in the zone of screw head front.In injection moulding process, screw rod is sent to, so as with the melt of resin from the injection nozzle injection model.
After finishing, metrology steps for preventing from injection moulding process, being stored in the resin adverse current in the screw head front region, often need in plastic-injection moulding machine, configure an anti-backflow device.Yet, in traditional anti-backflow device, when implementing pumpback after metrology steps is finished and before injection step begins, the resin in the screw rod easily flow to forward in the zone of screw head front, thereby causes that the amount that is stored in the resin in the screw head front region changes.
Summary of the invention
In view of this, be necessary to provide a kind of and can effectively prevent plastics adverse current and anti-backflow device simple in structure.
A kind of anti-backflow device, comprise screw rod, be located at crossing the glue head and being sheathed on the packing element of crossing on this screw rod of this screw rod one end, this screw rod and this are crossed and are provided with the first gap of passing through for molten plastic between the packing element, this anti-backflow device also comprises the sealing ring that is fixed on this screw rod, and being somebody's turn to do packing element is located at this and crosses between glue head and the sealing circle, during metering, this screw rod rotates under external force and drives molten plastic towards described the first Clearance Flow, and then promote this cross form between packing element and the sealing circle one for molten plastic by and the second gap of being communicated with this first gap, after metering finished, this screw rod of opposite spin made this screw rod cross that packing element moves so that sealing circle and this are crossed packing element and supported to seal described the second gap towards this.
Above-mentioned anti-backflow device is after metering, and its sealing ring supports with crossing packing element, thereby so that plastics can't adverse current.And anti-backflow device only comprises screw rod, glue head, mistake packing element and sealing ring can reach the effect that prevents plastics adverse current after metering excessively, and therefore above-mentioned anti-backflow device structure is simpler.
Description of drawings
Fig. 1 is the exploded view of the anti-backflow device of better embodiment of the present invention;
Fig. 2 is the installation diagram of anti-backflow device shown in Figure 1;
Fig. 3 is that anti-backflow device shown in Figure 2 is along the cutaway view of III-III line;
Fig. 4 is the use state diagram of anti-backflow device shown in Figure 2;
Fig. 5 is that anti-backflow device shown in Figure 4 is along the cutaway view of V-V line.
The main element symbol description
| |
100 |
| |
10 |
| Cross the |
20 |
| |
30 |
| |
40 |
| The |
50 |
| The |
60 |
| Cross the |
22 |
| |
24 |
| |
32 |
| |
34 |
The following specific embodiment further specifies the present invention in connection with above-mentioned accompanying drawing.
The specific embodiment
See also Fig. 1 to Fig. 3, anti-backflow device 100 comprises that a screw rod 10, is located at the packing element 30 and of crossing that glue head 20, is sheathed on the screw rod 10 of crossing of screw rod 10 1 ends and is fixed in sealing ring 40 on the screw rod 10, cross packing element 30 and be located between glue head 20 and the sealing ring 40, and be provided with first gap 50 that supplies plastics to pass through between mistake packing element 30 and the screw rod 10.
The other end of screw rod 10 is connected with the drive unit (not shown) of injection (mo(u)lding) machine, and screw rod 10 is rotatable and can be along the axial direction advance and retreat of screw rod 10 under this drive unit drives.
Cross the end that packing element 30 was close to glue head 20 and convex with some fixture blocks 32 and at least one piece 34 of supporting, described fixture block 32 and the described piece 34 of supporting are placed in respectively described the mistake in the glue groove 22, and the length of described fixture block 32 is greater than the described length of supporting piece 34.Fixture block 32 rotates relative to crossing packing element 30 in order to support to limit screw rod 10 with the cell wall that formed glue groove 22, supports piece 34 in order to support with end wall 24.
See also Fig. 4 and Fig. 5, can carry out with reference to following steps when using anti-backflow device 100:
During metering, screw rod 10 is rotary feeding under drive unit drives, and plastic extrusion is crossed packing element 30 and moved with crossing formation one second gap 60 between packing element 30 and the sealing ring 40, so that plastics flow through the second gap 60 and the first gap 50 successively towards crossing glue head 20.After metering finishes, screw rod 10 moves towards crossing packing element 30 under drive unit drives, after supporting piece 34 and breaking away from glue groove 22, drive unit again drive screw 10 opposite spins supports with the end wall 24 that will support piece 34 and mistake glue head 20, and the end that mistake packing element 30 is supported piece 34 relatively presses on the sealing ring 40 simultaneously to eliminate the second gap 60.When the holding of fixture block 32 and the cell wall that formed glue groove 22, screw rod 10 stops operating, and this moment, the second gap 60 was sealed.
Above-mentioned anti-backflow device 100 is after metering, and its sealing ring 40 supports with crossing packing element 30, thereby has sealed the second gap 60 so that plastics can't adverse current.And anti-backflow device 100 only comprises screw rod 10, glue head 20, mistake packing element 30 and sealing ring 40 can reach the effect that prevents plastics adverse current after metering excessively, and therefore above-mentioned anti-backflow device 100 structures are simpler.
In addition, those skilled in the art also can make various modifications, interpolation and the replacement on other forms and the details in claim of the present invention scope of disclosure and spirit.Certainly, these all should be included within the present invention's scope required for protection according to the variations such as various modifications, interpolation and replacement that spirit of the present invention is made.
Claims (7)
1. anti-backflow device, comprise screw rod, be located at crossing the glue head and being sheathed on the packing element of crossing on this screw rod of this screw rod one end, this screw rod and this are crossed and are provided with the first gap of passing through for molten plastic between the packing element, it is characterized in that: this anti-backflow device also comprises the sealing ring that is fixed on this screw rod, and being somebody's turn to do packing element is located at this and crosses between glue head and the sealing circle, during metering, this screw rod rotates under external force and drives molten plastic towards described the first Clearance Flow, and then promote this cross form between packing element and the sealing circle one for molten plastic by and the second gap of being communicated with this first gap, after metering finished, this screw rod of opposite spin made this screw rod cross that packing element moves so that sealing circle and this are crossed packing element and supported to seal described the second gap towards this.
2. anti-backflow device as claimed in claim 1, it is characterized in that: this is crossed contiguous this end of crossing the glue head of packing element and convexes with fixture block and support piece, this is crossed the glue head and offered the glue groove along its radial direction, described fixture block and support piece and be placed in respectively described the mistake in the glue groove.
3. anti-backflow device as claimed in claim 2, it is characterized in that: the length of this fixture block is supported the length of piece greater than this.
4. anti-backflow device as claimed in claim 2 is characterized in that: this is crossed contiguous this one side of crossing packing element of glue head and is provided with an end face, and this supports piece and this end wall supports when this is crossed packing element and sealing circle and supports.
5. anti-backflow device as claimed in claim 1, it is characterized in that: this is crossed the glue head and is a pyramid type.
6. anti-backflow device as claimed in claim 1, it is characterized in that: the sealing circle is made by elastic material.
7. anti-backflow device as claimed in claim 6, it is characterized in that: the material of making the sealing circle is rubber.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101112558 | 2012-04-10 | ||
| TW101112558A TW201341156A (en) | 2012-04-10 | 2012-04-10 | Countercurrent-proof device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103358499A true CN103358499A (en) | 2013-10-23 |
Family
ID=49361173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104318315A Pending CN103358499A (en) | 2012-04-10 | 2012-11-02 | Anti-reflux device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103358499A (en) |
| TW (1) | TW201341156A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107538696A (en) * | 2017-10-13 | 2018-01-05 | 东莞市联洲知识产权运营管理有限公司 | One kind injection extruder head sizing material anti-reversing clutch |
| CN108858986A (en) * | 2018-07-21 | 2018-11-23 | 积康螺杆制造（上海）股份有限公司 | A kind of three-piece self-sealing screw head group |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT15811U1 (en) | 2017-03-16 | 2018-07-15 | Engel Austria Gmbh | Dispensing device for dispensing a reactive precursor for polymer production |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09262877A (en) * | 1996-03-28 | 1997-10-07 | Sumitomo Heavy Ind Ltd | Back flow preventing apparatus |
| CN1209382A (en) * | 1997-07-18 | 1999-03-03 | 住友重机械工业株式会社 | Counter-flow-preventive device |
| CN1533871A (en) * | 2003-03-27 | 2004-10-06 | Lg������ʽ���� | Injection element with rotary device used for preventing back flow |
| US20050129802A1 (en) * | 2003-12-12 | 2005-06-16 | Haruyuki Matsubayashi | Backflow prevention device for in-line screw type injection molding machine |
| TWM355812U (en) * | 2009-01-07 | 2009-05-01 | Edex Machinery Co Ltd | Structure improvement of injection screw |
-
2012
- 2012-04-10 TW TW101112558A patent/TW201341156A/en unknown
- 2012-11-02 CN CN2012104318315A patent/CN103358499A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09262877A (en) * | 1996-03-28 | 1997-10-07 | Sumitomo Heavy Ind Ltd | Back flow preventing apparatus |
| CN1209382A (en) * | 1997-07-18 | 1999-03-03 | 住友重机械工业株式会社 | Counter-flow-preventive device |
| CN1533871A (en) * | 2003-03-27 | 2004-10-06 | Lg������ʽ���� | Injection element with rotary device used for preventing back flow |
| US20050129802A1 (en) * | 2003-12-12 | 2005-06-16 | Haruyuki Matsubayashi | Backflow prevention device for in-line screw type injection molding machine |
| TWM355812U (en) * | 2009-01-07 | 2009-05-01 | Edex Machinery Co Ltd | Structure improvement of injection screw |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107538696A (en) * | 2017-10-13 | 2018-01-05 | 东莞市联洲知识产权运营管理有限公司 | One kind injection extruder head sizing material anti-reversing clutch |
| CN108858986A (en) * | 2018-07-21 | 2018-11-23 | 积康螺杆制造（上海）股份有限公司 | A kind of three-piece self-sealing screw head group |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201341156A (en) | 2013-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2948924C (en) | Plasticizing delivery method and device using eccentric rotor and having pulsed volume deformation | |
| CN205058625U (en) | Injection formula 3D prints shower nozzle | |
| CN103358499A (en) | Anti-reflux device | |
| CN103029273A (en) | Injection part of injection molding machine | |
| EP2907644B1 (en) | Injection unit and injection molding method | |
| CN201544417U (en) | Single-point valve needle type hot nozzle | |
| US20130316039A1 (en) | Mold-Tool System Including Cooling-Insert Assembly being Positioned Proximate to Nozzle Assembly | |
| CN206999522U (en) | A kind of more nozzle core side glue mouth TOP-TIPs | |
| JP2017056655A (en) | Injection molding machine | |
| CN205767167U (en) | A kind of injection machine | |
| CN106042260B (en) | A kind of online switching-valve arrangement and its control method for being kneaded injection molding machine | |
| CN218876183U (en) | Injection head for multi-component injection unit | |
| CN203973923U (en) | Anti-clogging injection machine nozzle | |
| JP2004050427A5 (en) | ||
| CN201633176U (en) | Needle valve type single-nozzle injection molding heat machine nozzle | |
| CN105459358A (en) | Screw head for plasticization | |
| CN207657060U (en) | A kind of remote controller casing injection-moulding device | |
| CN204869590U (en) | Dual -screw extruder | |
| CN210590421U (en) | Injection molded structure of HDPE | |
| CN204687262U (en) | A kind of flow distribution plate | |
| CN208593017U (en) | It is a kind of elastic from plastic structure rocket head excessively | |
| CN207747321U (en) | A kind of injection molding machine ejecting mechanism | |
| CN209257369U (en) | A kind of injection molding machine new screw structure | |
| CN216267234U (en) | Double-shot molding hot runner system | |
| CN208962336U (en) | A kind of injection molding machine injecting mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131023 |