CN102126277A - Injection molding mechanism with single cylinder - Google Patents
Injection molding mechanism with single cylinder Download PDFInfo
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- CN102126277A CN102126277A CN2010103003183A CN201010300318A CN102126277A CN 102126277 A CN102126277 A CN 102126277A CN 2010103003183 A CN2010103003183 A CN 2010103003183A CN 201010300318 A CN201010300318 A CN 201010300318A CN 102126277 A CN102126277 A CN 102126277A
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Abstract
The invention provides an injection molding mechanism with a single cylinder. The injection molding mechanism comprises a material barrel, a front plate of an injection table, a pre-molding device, an injection device, and a rear plate of the injection table, wherein the material barrel is installed at the front end of the front plate of the injection table; the front plate of the injection table and the rear plate of the injection table are connected to form a rigid integrated framework through a pull rod; the pre-molding device is located between the front plate of the injection table or the material barrel and the rear plate of the injection table or an injection oil cylinder, and comprises a pre-molding motor, a pre-molding motor seat, a coupling, a bearing and a thrust disc; the pre-molding motor seat is guided through the pull rod; the pre-molding motor is installed on the pre-molding motor seat; an output shaft of the pre-molding motor is a hollow spline shaft; the coupling penetrates through the hollow spline shaft of the pre-molding motor; one end of the coupling is connected with a screw rod; the other end of the coupling is supported through the bearing, and is connected with the thrust disc; the injection device is installed on the rear plate of the injection table; and an injection push rod of the injection device is fixed with the thrust disc. The injection molding mechanism has the advantages of convenience and quickness for maintenance and good reliability and solves problems caused by the rotation of a piston rod during the pre-molding.
Description
Technical field
The present invention relates to the injection mechanism of injector.
Background technology
The effect of injecting mechanism mainly is that drive screw is done rotation and straight reciprocating motion, to reach the purpose with plastics plasticizing and output.
Existing single cylinder injecting mechanism mainly is divided into injection ram not rotary (Fig. 1) and two kinds of forms of injection ram rotary (Fig. 2).Among Fig. 1, preformed motor 13 is installed on the rear end of injection cylinder bonnet 12, and machine barrel 2 is installed on the front end of penetrating platform header board 1; During preformed, preformed motor 13 drives screw rod 3 rotations by the shaft coupling 4 of long spline 11 piston rod 5 inside; During injection (penetrate and move back), piston rod 5 drives shaft coupling 4 by bearing 6, bearing 7, nut 8 and does axially reciprocating.Among Fig. 2, preformed motor 13 is installed on the rear end of injection cylinder 25, and the front end of penetrating platform header board 1 links to each other with barrel 2, the rear end is connected with injection cylinder 25, and its spline 23 is fixed on the sealing shroud 26 and compacting ring 27 of oil cylinder 25 inside by bearing 6, bearing 7, nut 8; During preformed, oil motor 13 drives spline housing 24 and injecting piston rod 22 rotations by external splines 23, again by piston rod 22 and screw rod 3 flange connecting 21 are driven screw rod 3 rotations; During injection, injecting piston rod 22 is done straight reciprocating motion by flange 21 drive screws 3.
More than the preformed action of two kinds of single cylinder injecting mechanisms be the shaft coupling of preformed motor by long spline driving injection ram or injection ram inside, drive the screw rod rotation again, its shortcoming is: (1) piston, piston rod packing require high, life-span weak point, piston rod also has axially-movable during preformed in rotation, belongs to helixseal.(2) iron filings that poor reliability, spline are immersed in the hydraulic oil of injecting cavity, the spline skimming wear produces are easy to cause hydraulic system fault.(3) I﹠M difficulty, shaft coupling, spline and bearing thereof are installed in the injection cylinder, carry out the replacing of sealing ring or bearing, need earlier whole injecting mechanism to be taken apart.(4) part processing cost height, the processing of long stroke major diameter spline needs special equipment.(5) bad adaptability, existing single cylinder injecting mechanism are not suitable for big-and-middle-sized machine, and injection ram, the diameter of piston rod of big-and-middle-sized machine are bigger, cause the linear velocity of its rotation excessive easily, quicken the damage of sealing ring.
Summary of the invention
Technical problem to be solved by this invention is to overcome the above-mentioned deficiency of prior art and provide a kind of seal request low, easy to maintenance quick, reliability is high, cost is low single cylinder injecting mechanism.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
The single cylinder injecting mechanism, comprise barrel, penetrate the platform header board, pre-molding apparatus, injection device, penetrate plate behind the platform, barrel is installed on penetrates the preceding front edge of board of platform, it is characterized in that: plate connects into a rigid unitary framework by pull bar after penetrating the platform header board and penetrating platform, pre-molding apparatus is after penetrating platform header board or barrel and penetrating platform between plate or the injection cylinder device, pre-molding apparatus comprises the preformed motor, preformed motor seat, shaft coupling, bearing, thrust disc, preformed motor seat is led by pull bar, the preformed motor is installed on the preformed motor seat, the output shaft of preformed motor is hollow splined shaft, shaft coupling passes the hollow splined shaft of preformed motor, shaft coupling one end is connected with screw rod, the other end is connected by bearings and with thrust disc, and injection device is installed on to be penetrated behind the platform on the plate, and the injection catch bar and the thrust disc of injection device are fixed.
Be easy disassembly, the injection catch bar of above-mentioned injection device is connected by the thrust disc of semi-ring with pre-molding apparatus.
Above-mentioned injection device can be the injection cylinder device, also can be substituted by injection servomotor and ball-screw, and lead-screw is injected by its injection catch bar.
Compared with prior art, the invention has the advantages that:
Injection device is separated with pre-molding apparatus, independent design separately, the independent installation connects together finishing existing action by thrust disc and semi-ring then, and shaft coupling, bearing etc. all externally like this can easy disassembly, and are therefore easy to maintenance quick; And avoided the iron filings that spline is immersed in the hydraulic oil of injecting cavity, the spline skimming wear produces to be easy to cause problems such as hydraulic system fault, good reliability.
Adopt the pre-molding apparatus of hollow shaft hydraulic motor to make the transmission of having only axial force between shaft coupling and the injecting piston rod, and do not have the transmission of any moment of torsion, require height, drawback that the part processing cost is high thereby solve piston, piston rod packing that the piston rod rotation brings.
Description of drawings
The cutaway view of the existing not rotary single cylinder injecting mechanism of piston of Fig. 1.
The cutaway view of the existing rotary-piston single cylinder injecting mechanism of Fig. 2.
Fig. 3 is the built-in single cylinder injection of the preformed motor of an embodiment of the invention outline drawing.
Fig. 4 is the built-in single cylinder injection of the preformed motor of an embodiment of the invention cutaway view.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As shown in Figure 3, the single cylinder injecting mechanism comprises and penetrates platform header board 31, pull bar 32, pre-molding apparatus 43, penetrates plate 40 behind the platform, injection cylinder device 44.
Penetrate platform header board 31 with pull bar 32, penetrate platform after plate 40 form rigid unitary, injection device 44 is installed on to be penetrated behind the platform on the plate 40, machine barrel 2 is installed on the front end of penetrating platform header board 31, pre-molding apparatus 43 is after penetrating platform header board 31 and penetrating platform between the plate 40.
Show as Fig. 4, described pre-molding apparatus 43 comprises oil motor seat 35, oil motor 34, shaft coupling 33, bearing 6, bearing 7, thrust disc 36, bearing nut 8, oil motor 34 is installed on the oil motor seat 35, and oil motor seat 35 is enclosed within on the pull bar 32 and can be reciprocating along pull bar 32.
Injection cylinder device 44 comprises oil cylinder bonnet 42, piston 41, piston rod 39, oil cylinder protecgulum 38, cylinder tube 40, piston rod 39 is connected by the thrust disc 36 of semi-ring 37 with pre-molding apparatus 43, screw rod 3 directly is installed in shaft coupling 33 1 ends, and shaft coupling 33 other ends are by bearing 6, bearing 7 supportings and fixing by nut 8.
Above-mentioned cylinder tube 40 with penetrate that plate is an integral type behind the platform, also split type.
Inject or penetrate when moving back, the oil cylinder internal pressure acts on thrust disc 36 by injection ram 41, injecting piston rod 39, thrust disc 36 is transmitted to its injection thrust on the screw rod 3 by shaft coupling 33 on the one hand, and thrust disc 36 drives whole pre-molding apparatus 43 by oil motor seat 35 and do straight reciprocating motion under the guiding of pull bar 32 simultaneously.
During preformed, preformed motor 34 passes through its hollow internal spline and drives 3 rotations of shaft coupling 33 drive screw rods, and shaft coupling 33 is being done passive straight reciprocating motion by the thrust disc 36 whole pre-molding apparatus 43 of drive and injecting piston rod 39, piston 41 under the screw rod reaction force acts under the guiding of pull bar 32 simultaneously.Like this, not only realize the transmission of axial force between shaft coupling and the injecting piston rod but also eliminated the transmission of moment of torsion.
As shown in Figure 4, when shaft coupling and bearing I﹠M thereof, pull down semi-ring 37, do and penetrate the deactuate work, piston rod 39 separates with thrust disc 36 under the effect of penetrating the power of moving back, and the replacing of carrying out shaft coupling and bearing thereof this moment is very convenient.
Claims (2)
1. single cylinder injecting mechanism, comprise barrel, penetrate the platform header board, pre-molding apparatus, injection device, penetrate plate behind the platform, barrel is installed on penetrates the preceding front edge of board of platform, it is characterized in that: plate connects into a rigid unitary framework by pull bar after penetrating the platform header board and penetrating platform, pre-molding apparatus is after penetrating platform header board or barrel and penetrating platform between plate or the injection cylinder device, pre-molding apparatus comprises the preformed motor, preformed motor seat, shaft coupling, bearing, thrust disc, preformed motor seat is led by pull bar, the preformed motor is installed on the preformed motor seat, the output shaft of preformed motor is hollow splined shaft, shaft coupling passes the hollow splined shaft of preformed motor, shaft coupling one end is connected with screw rod, the other end is connected by bearings and with thrust disc, and injection device is installed on to be penetrated behind the platform on the plate, and the injection catch bar and the thrust disc of injection device are fixed.
2. single cylinder injecting mechanism according to claim 1 is characterized in that: the injection catch bar of described injection device is connected by the thrust disc of semi-ring with pre-molding apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010300318.3A CN102126277B (en) | 2010-01-14 | 2010-01-14 | Injection molding mechanism with single cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010300318.3A CN102126277B (en) | 2010-01-14 | 2010-01-14 | Injection molding mechanism with single cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102126277A true CN102126277A (en) | 2011-07-20 |
| CN102126277B CN102126277B (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010300318.3A Active CN102126277B (en) | 2010-01-14 | 2010-01-14 | Injection molding mechanism with single cylinder |
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| CN (1) | CN102126277B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672918A (en) * | 2012-05-10 | 2012-09-19 | 柳州高新区开宇塑胶机械有限公司 | Injection molding mechanism for high-performance single-cylinder injection molding machine |
| CN103009556A (en) * | 2012-11-27 | 2013-04-03 | 宁波长飞亚塑料机械制造有限公司 | Injection platform support mechanism for injection molding machines |
| CN103817886A (en) * | 2014-03-06 | 2014-05-28 | 宁波欧意莱机械制造有限公司 | Oil leakage prevention structure of injection molding machine |
| CN104527034B (en) * | 2014-12-15 | 2017-03-22 | 湖南昊兴机械科技有限公司 | Injection-stretch-blow injection molding injection method and device for plastic hollow products |
| CN106738723A (en) * | 2016-12-05 | 2017-05-31 | 台州市黄岩力松机械有限公司 | Linear high speed single cylinder injection mechanism |
| CN107053617A (en) * | 2017-03-15 | 2017-08-18 | 刘镇江 | The electric injection device of injection machine |
| CN109822841A (en) * | 2019-02-26 | 2019-05-31 | 中山力劲机械有限公司 | A kind of single injection mechanism of Universal efficient |
| CN110154308A (en) * | 2019-06-19 | 2019-08-23 | 宁波伊菲特科技有限公司 | A kind of injecting mechanism |
| CN110936571A (en) * | 2019-12-07 | 2020-03-31 | 佛山市顺德区震德精密机械有限公司 | Single-cylinder glue injection mechanism of injection molding machine |
| CN113183395A (en) * | 2021-05-13 | 2021-07-30 | 重庆城市管理职业学院 | Electromechanical integrated injection molding device for workpiece production and processing |
Citations (5)
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| GB1137025A (en) * | 1966-04-21 | 1968-12-18 | Desma Werke Gmbh | Improvements in machines for injection-moulding resilient materials |
| US3822867A (en) * | 1972-10-17 | 1974-07-09 | Improved Machinery Inc | Control apparatus and methods for molding machinery |
| JPH05192970A (en) * | 1992-01-17 | 1993-08-03 | Nissei Plastics Ind Co | Injection molding machine |
| CN2707475Y (en) * | 2004-06-23 | 2005-07-06 | 富强鑫精密工业股份有限公司 | Oil-electricity mixed type ejection device of ejection forming machine |
| US20090297655A1 (en) * | 2004-11-22 | 2009-12-03 | Siemens Aktiengesellschaft | Linearly Displaceable Rotary Drive For A Plastic Injection-Molding Machine |
-
2010
- 2010-01-14 CN CN201010300318.3A patent/CN102126277B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1137025A (en) * | 1966-04-21 | 1968-12-18 | Desma Werke Gmbh | Improvements in machines for injection-moulding resilient materials |
| US3822867A (en) * | 1972-10-17 | 1974-07-09 | Improved Machinery Inc | Control apparatus and methods for molding machinery |
| JPH05192970A (en) * | 1992-01-17 | 1993-08-03 | Nissei Plastics Ind Co | Injection molding machine |
| CN2707475Y (en) * | 2004-06-23 | 2005-07-06 | 富强鑫精密工业股份有限公司 | Oil-electricity mixed type ejection device of ejection forming machine |
| US20090297655A1 (en) * | 2004-11-22 | 2009-12-03 | Siemens Aktiengesellschaft | Linearly Displaceable Rotary Drive For A Plastic Injection-Molding Machine |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672918A (en) * | 2012-05-10 | 2012-09-19 | 柳州高新区开宇塑胶机械有限公司 | Injection molding mechanism for high-performance single-cylinder injection molding machine |
| CN102672918B (en) * | 2012-05-10 | 2015-01-21 | 柳州高新区开宇塑胶机械有限公司 | Injection molding mechanism for high-performance single-cylinder injection molding machine |
| CN103009556A (en) * | 2012-11-27 | 2013-04-03 | 宁波长飞亚塑料机械制造有限公司 | Injection platform support mechanism for injection molding machines |
| CN103817886A (en) * | 2014-03-06 | 2014-05-28 | 宁波欧意莱机械制造有限公司 | Oil leakage prevention structure of injection molding machine |
| CN103817886B (en) * | 2014-03-06 | 2016-09-14 | 宁波欧意莱机械制造有限公司 | A kind of injection machine leak-proof arrangement |
| CN104527034B (en) * | 2014-12-15 | 2017-03-22 | 湖南昊兴机械科技有限公司 | Injection-stretch-blow injection molding injection method and device for plastic hollow products |
| CN106738723A (en) * | 2016-12-05 | 2017-05-31 | 台州市黄岩力松机械有限公司 | Linear high speed single cylinder injection mechanism |
| CN107053617A (en) * | 2017-03-15 | 2017-08-18 | 刘镇江 | The electric injection device of injection machine |
| CN109822841A (en) * | 2019-02-26 | 2019-05-31 | 中山力劲机械有限公司 | A kind of single injection mechanism of Universal efficient |
| CN110154308A (en) * | 2019-06-19 | 2019-08-23 | 宁波伊菲特科技有限公司 | A kind of injecting mechanism |
| CN110936571A (en) * | 2019-12-07 | 2020-03-31 | 佛山市顺德区震德精密机械有限公司 | Single-cylinder glue injection mechanism of injection molding machine |
| CN110936571B (en) * | 2019-12-07 | 2023-11-10 | 佛山市顺德区震德精密机械有限公司 | Single-cylinder glue injection mechanism of injection molding machine |
| CN113183395A (en) * | 2021-05-13 | 2021-07-30 | 重庆城市管理职业学院 | Electromechanical integrated injection molding device for workpiece production and processing |
| CN113183395B (en) * | 2021-05-13 | 2023-03-10 | 重庆城市管理职业学院 | Electromechanical integrated injection molding device for workpiece production and processing |
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| Publication number | Publication date |
|---|---|
| CN102126277B (en) | 2014-12-17 |
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