CN104097308A - Double-step injection device - Google Patents
Double-step injection device Download PDFInfo
- Publication number
- CN104097308A CN104097308A CN201410335436.6A CN201410335436A CN104097308A CN 104097308 A CN104097308 A CN 104097308A CN 201410335436 A CN201410335436 A CN 201410335436A CN 104097308 A CN104097308 A CN 104097308A
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- CN
- China
- Prior art keywords
- extrusion
- injection device
- plunger
- propelling movement
- valve
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- 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.)
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/53—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
- B29C45/54—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston and plasticising screw
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a double-step injection device. The double-step injection device comprises a screw rod extrusion structure and a plunger pushing structure, wherein an extrusion port of the screw rod extrusion structure is connected with a pushing outlet of the plunger pushing structure; an injection head is arranged at the end of the plunger pushing structure; the extrusion port, the pushing outlet and the injection head form a three-way channel; and the extrusion port is provided with a one-way valve from the extrusion port to the pushing outlet. The one-way valve is arranged in the extrusion port, so that plastics only can be fed in the plunger pushing structure from the screw rod extrusion structure so as to prevent the plastics from being pressed back into the extrusion port due to excessive pressure of the plunger pushing structure, the pushing pressure of the plunger pushing structure can be improved while the material leakage is prevented; and as a shuttle valve is not required to be mounted any more, the shuttle valve is not required to be adjusted when the injection device is used, and the operation of the injection device is simpler.
Description
Technical field
The present invention relates to injection-moulding device, specifically a kind of Two-Stage Injection Device.
Background technology
Injection device is to utilize mould for plastics to make the main former of the plastic products of various shapes thermoplastic or thermosetting material.Injection machine passes on moving system, electric control system, lubricating system, heating and cooling system, safety monitoring system etc. to form by injecting systems, Clamping System, hydraulic pressure conventionally.The working method of Two-Stage Injection Device be with screw rod preformed and then with plunger by plastic injection in mold cavity, after injection finishes, to being expelled to melt in die cavity, keep sizing.
Referring to Fig. 1 to Fig. 4, traditional Two-Stage Injection Device comprises Screw Extrusion structure 1, plunger pushes structure 2, the extrusion 11 of described Screw Extrusion structure 1 is connected with the propelling movement outlet 21 that described plunger pushes structure 2, the end that described plunger pushes structure 1 is provided with injection head 3, extrusion 11, propelling movement outlet 21 form trident passages with injection head 3, described trident passway is provided with the valve a(that shuttles back and forth for ALT-CH alternate channel mode of communicating as Fig. 4), by taking out of the valve a that shuttles back and forth, insert and can realize the plasticizing of injection device and the change of injection two states.When plasticizing operation, regulate the valve a that shuttles back and forth that extrusion 11 is communicated with propelling movement outlet 21, Screw Extrusion structure 1 is rotated propelling movement plastics and is pushed in structure 2 and push plastics to plunger, after completing plasticizing process, regulate the valve a that shuttles back and forth to make to push outlet 21 and be connected with injection head 3, at this moment the plunger in plunger delivery device 2 promotes to make the plastics in it to penetrate from injection head 3.Because the valve a that shuttles back and forth is that matched in clearance is installed in trident passage, so the pressure of plunger pusher 2 when pushing can not be too high, otherwise plastics will run out of in extrusion 11 from gap, forms and leak material.
Summary of the invention
The present invention is directed to prior art deficiency, provide a kind of preventing because hypertonia causes plastics, to run the Two-Stage Injection Device in extrusion when pusher pushes.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals: a kind of Two-Stage Injection Device, comprise Screw Extrusion structure, plunger pushes structure, the extrusion of described Screw Extrusion structure is connected with the propelling movement outlet that described plunger pushes structure, the end that described plunger pushes structure is provided with injection head, and described extrusion, described propelling movement outlet form trident passage with described injection head, is provided with the check valve from described extrusion to described propelling movement outlet on described extrusion.By being set at extrusion, check valve makes plastics to push structure from screw rod to enter into plunger and push structure, prevent from because plunger propelling movement structural pressure is excessive, plastics being pushed back in extrusion, can improve propelling movement pressure that plunger pushes structure anti-leak-stopping material simultaneously, simultaneously owing to not needing to arrange again the valve that shuttles back and forth, when using this injection device, do not need to regulate again the valve that shuttles back and forth, make the operation of injection device become simple.
In technique scheme, be provided with the valve seat of passage in the middle of described check valve comprises, in described valve seat, be provided with spring, described spring one end is fixed on valve seat, and described spring one end is connected with steel ball, and described steel ball leans against on described extrusion by spring top.
The present invention compared with prior art, there is following beneficial effect: the present invention makes plastics to push structure from screw rod to enter into plunger and push structure by check valve is set at extrusion, prevent from because plunger propelling movement structural pressure is excessive, plastics being pushed back in extrusion, can improve propelling movement pressure that plunger pushes structure anti-leak-stopping material simultaneously, simultaneously owing to not needing to arrange again the valve that shuttles back and forth, when using this injection device, do not need to regulate again the valve that shuttles back and forth, make the operation of injection device become simple.
Accompanying drawing explanation
Fig. 1 is the structural representation of background technology.
Fig. 2 is the enlarged drawing of A place plastifying state in Fig. 1.
Fig. 3 is the enlarged drawing of injection moulding state in A place in Fig. 1.
Fig. 4 is the valve arrangement schematic diagram that shuttles back and forth in background technology.
Fig. 5 is the structural representation of the embodiment of the present invention.
Fig. 6 is the enlarged drawing at B place in Fig. 5.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the present invention is described in further detail: referring to Fig. 5 to Fig. 6, a kind of Two-Stage Injection Device, comprise Screw Extrusion structure 1, plunger pushes structure 2, the extrusion 11 of described Screw Extrusion structure 1 is connected with the propelling movement outlet 21 that described plunger pushes structure 2, the end that described plunger pushes structure 2 is provided with injection head 3, described extrusion 11, described propelling movement outlet 21 form trident passage with described injection head 3, are provided with the check valve 4 from described extrusion 11 to described propelling movement outlet 21 on described extrusion 11.By being set at extrusion 11, check valve 4 makes plastics to push structure 1 from screw rod to enter into plunger and push structure 2, prevent from because plunger propelling movement structure 2 pressure are excessive, plastics being pushed back in extrusion 11, can improve so propelling movement pressure that plunger pushes structure 2 anti-leak-stopping material simultaneously, simultaneously owing to not needing that the valve a that shuttles back and forth is set again, when using this injection device, do not need to regulate again the valve a that shuttles back and forth, make the operation of injection device become simple.
In the middle of comprising, described check valve 4 is provided with the valve seat 41 of passage, in described valve seat 41, be provided with spring 42, described spring 42 one end are fixed on valve seat 41, and described spring 42 one end are connected with steel ball 43, and described steel ball 43 leans on described extrusion 11 by spring 42.
This injection device is when work, first screw rod pusher 1 pushes plastics to the interior injected plastic of plunger pusher 2, because injection head 3 is now cold, injection head 3 is interior owing to there being residual plastics to block injection head 3, so now plastics can not penetrate from injection head 3, after plasticizing completes, heating injection head 3 makes the interior residual plastic molting of injection head 3, and then plunger pusher 2 pushes and makes plastics penetrate and carry out injection operation from injection head 3.
Claims (2)
1. a Two-Stage Injection Device, comprise Screw Extrusion structure (1), plunger pushes structure (2), the extrusion (11) of described Screw Extrusion structure (1) is connected with the propelling movement outlet (21) that described plunger pushes structure (2), the end that described plunger pushes structure (2) is provided with injection head (3), described extrusion (11), described propelling movement outlet (21) form trident passage with described injection head (3), it is characterized in that: on described extrusion (11), be provided with the check valve (4) that exports (21) from described extrusion (11) to described propelling movement.
2. a kind of Two-Stage Injection Device as claimed in claim 1, it is characterized in that: the valve seat (41) that is provided with passage in the middle of described check valve (4) comprises, in described valve seat (41), be provided with spring (42), described spring (42) one end is fixed on valve seat (41), described spring (42) one end is connected with steel ball (43), and described steel ball (43) leans on described extrusion (11) by spring (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410335436.6A CN104097308A (en) | 2014-07-15 | 2014-07-15 | Double-step injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410335436.6A CN104097308A (en) | 2014-07-15 | 2014-07-15 | Double-step injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104097308A true CN104097308A (en) | 2014-10-15 |
Family
ID=51666045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410335436.6A Pending CN104097308A (en) | 2014-07-15 | 2014-07-15 | Double-step injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104097308A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105082478A (en) * | 2015-08-25 | 2015-11-25 | 广州天沅硅胶机械科技有限公司 | Trace precision injection molding glue injection device |
| CN106945241A (en) * | 2015-11-25 | 2017-07-14 | 住友重机械工业株式会社 | Injection device and reversal valve |
| CN107839178A (en) * | 2017-10-31 | 2018-03-27 | 周飞 | The shuttle mechanism of Two-Stage Injection Device |
| CN117549487A (en) * | 2024-01-11 | 2024-02-13 | 成都鸿能精密机械有限公司 | Shuttle valve assembly |
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| GB1503580A (en) * | 1974-05-07 | 1978-03-15 | Pirelli | Device for use in manufacturing articles of plastics or elastomeric material |
| WO1997015432A1 (en) * | 1995-10-27 | 1997-05-01 | Sodick Co., Ltd. | Method of preplasticating injection molding |
| CN201950787U (en) * | 2010-12-27 | 2011-08-31 | 东华机械有限公司 | Injection-moulding mechanism with large injection quantity |
| CN202114883U (en) * | 2011-05-15 | 2012-01-18 | 东华机械有限公司 | Injection mechanism with ultra-large injection volume |
| CN202318826U (en) * | 2011-11-07 | 2012-07-11 | 广东佳明机器有限公司 | Injection device of screw plunger type injection molding machine |
| CN103264492A (en) * | 2013-06-04 | 2013-08-28 | 浙江大学 | Injection device and method of miniature injection molding machine of differential transmission |
| CN204076713U (en) * | 2014-07-15 | 2015-01-07 | 宁波海洲机械有限公司 | A kind of Two-Stage Injection Device |
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2014
- 2014-07-15 CN CN201410335436.6A patent/CN104097308A/en active Pending
Patent Citations (7)
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| GB1503580A (en) * | 1974-05-07 | 1978-03-15 | Pirelli | Device for use in manufacturing articles of plastics or elastomeric material |
| WO1997015432A1 (en) * | 1995-10-27 | 1997-05-01 | Sodick Co., Ltd. | Method of preplasticating injection molding |
| CN201950787U (en) * | 2010-12-27 | 2011-08-31 | 东华机械有限公司 | Injection-moulding mechanism with large injection quantity |
| CN202114883U (en) * | 2011-05-15 | 2012-01-18 | 东华机械有限公司 | Injection mechanism with ultra-large injection volume |
| CN202318826U (en) * | 2011-11-07 | 2012-07-11 | 广东佳明机器有限公司 | Injection device of screw plunger type injection molding machine |
| CN103264492A (en) * | 2013-06-04 | 2013-08-28 | 浙江大学 | Injection device and method of miniature injection molding machine of differential transmission |
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| 王兴天: "《注塑工艺与设备》", 31 January 2010, 化学工业出版社 * |
| 王守城等: "《液压传动（第二版）》", 31 July 2013, 北京大学出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105082478A (en) * | 2015-08-25 | 2015-11-25 | 广州天沅硅胶机械科技有限公司 | Trace precision injection molding glue injection device |
| CN105082478B (en) * | 2015-08-25 | 2018-05-29 | 广州天沅硅胶机械科技有限公司 | A kind of micro-precision is injection moulded glue filling device |
| CN106945241A (en) * | 2015-11-25 | 2017-07-14 | 住友重机械工业株式会社 | Injection device and reversal valve |
| CN107839178A (en) * | 2017-10-31 | 2018-03-27 | 周飞 | The shuttle mechanism of Two-Stage Injection Device |
| CN117549487A (en) * | 2024-01-11 | 2024-02-13 | 成都鸿能精密机械有限公司 | Shuttle valve assembly |
| CN117549487B (en) * | 2024-01-11 | 2024-04-12 | 成都鸿能精密机械有限公司 | Shuttle valve assembly |
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Application publication date: 20141015 |