CN102126277B - Injection molding mechanism with single cylinder - Google Patents
Injection molding mechanism with single cylinder Download PDFInfo
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- CN102126277B CN102126277B CN201010300318.3A CN201010300318A CN102126277B CN 102126277 B CN102126277 B CN 102126277B CN 201010300318 A CN201010300318 A CN 201010300318A CN 102126277 B CN102126277 B CN 102126277B
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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 drive screw is done and is rotated and straight reciprocating motion, is plastified and the object exported by plastics to reach.
Existing injection molding mechanism with single cylinder is mainly divided into injection ram non rotating formula (Fig. 1) and injection ram rotary (Fig. 2) two kinds of forms.In 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 penetrating platform header board 1; During preformed, preformed motor 13 drives screw rod 3 to rotate 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 to do axially reciprocating by bearing 6, bearing 7, nut 8.In Fig. 2, preformed motor 13 is installed on the rear end of injection cylinder 25, and the front end penetrating platform header board 1 is connected with barrel 2, rear end is connected with injection cylinder 25, on the sealing shroud 26 that its spline 23 is fixed on oil cylinder 25 inside by bearing 6, bearing 7, nut 8 and compacting ring 27; During preformed, oil motor 13 drives spline housing 24 and injecting piston rod 22 to rotate by external splines 23, then by driving screw rod 3 to rotate the flange 21 that piston rod 22 is connected with screw rod 3; During injection, injecting piston rod 22 does straight reciprocating motion by flange 21 drive screw 3.
The preformed action of above two kinds of injection molding mechanism with single cylinders is that preformed motor drives the shaft coupling of injection ram or injection ram inside by long spline, screw rod is driven to rotate again, its shortcoming is: (1) piston, piston rod packing require high, the life-span is short, during preformed, piston rod also has axially-movable while rotation, belongs to helixseal.(2) poor reliability, the iron filings that spline is immersed in the hydraulic oil of injecting cavity, spline slide wearing and tearing produce are easy to cause hydraulic system fault.(3) I&M difficulty, shaft coupling, spline and bearing thereof are arranged in injection cylinder, carry out the replacing of sealing ring or bearing, need first to be taken apart by whole injecting mechanism.(4) part processing cost is high, and the processing of Long travel major diameter spline needs special equipment.(5) bad adaptability, existing injection molding mechanism with single cylinder are not suitable for big-and-middle-sized machine, and injection ram, the diameter of piston rod of big-and-middle-sized machine are comparatively large, and the linear velocity easily causing it to rotate is excessive, the damage of acceleration sealing ring.
Summary of the invention
Technical problem to be solved by this invention be overcome prior art above-mentioned deficiency and provide a kind of seal request low, easy to maintenance quick, reliability is high, cost is low injection molding mechanism with single cylinder.
The present invention solves the problems of the technologies described above adopted technical scheme:
Injection molding mechanism with single cylinder, comprise barrel, penetrate platform header board, pre-molding apparatus, injection device, penetrate plate after platform, barrel is installed on penetrates front edge of board before platform, it is characterized in that: after penetrating platform header board and penetrating platform, plate connects into a rigid unitary framework by pull bar, pre-molding apparatus is penetrating platform header board or barrel and after penetrating platform between plate or injection cylinder device, pre-molding apparatus comprises preformed motor, preformed motor base, shaft coupling, bearing, thrust disc, preformed motor base is led by pull bar, preformed motor is arranged on preformed motor base, the output shaft of preformed motor is hollow splined shaft, shaft coupling is through the hollow splined shaft of preformed motor, shaft coupling one end is connected with screw rod, the other end is by bearings and be connected with thrust disc, injection device is installed on to be penetrated after platform on plate, the injection catch bar of injection device and thrust disc are fixed.
For convenience of dismounting, 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 injection cylinder device, also can be substituted by injection servomotor and ball-screw, and by its injection catch bar, lead-screw is injected.
Compared with prior art, the invention has the advantages that:
Be separated with pre-molding apparatus by injection device, respective independent design, independent install, then connect together to complete existing action by thrust disc and semi-ring, shaft coupling, bearing etc., like this can easy disassembly all in outside, therefore fast easy to maintenance; And avoid that spline is immersed in the hydraulic oil of injecting cavity, iron filings that spline slide wearing and tearing produce are easy to cause the problems such as hydraulic system fault, good reliability.
Adopt hollow shaft hydraulic motor pre-molding apparatus to make the transmission only having axial force between shaft coupling and injecting piston rod, and without the transmission of any moment of torsion, thus solve piston rod and rotate the piston, the piston rod packing that bring and require height, the drawback that part processing cost is high.
Accompanying drawing explanation
The sectional view of Fig. 1 existing piston non rotating formula injection molding mechanism with single cylinder.
The sectional view of the existing rotary-piston injection molding mechanism with single cylinder of Fig. 2.
Fig. 3 is the preformed motor built-in single cylinder injection outline drawing of the embodiment of the present invention.
Fig. 4 is the preformed motor built-in single cylinder injection sectional view of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Figure 3, injection molding mechanism with single cylinder comprise penetrate platform header board 31, pull bar 32, pre-molding apparatus 43, penetrate platform after plate 40, injection cylinder device 44.
Penetrate platform header board 31 and pull bar 32, penetrate platform after plate 40 form rigid unitary, injection device 44 is installed on to be penetrated after platform on plate 40, and machine barrel 2 is installed on the front end penetrating platform header board 31, and pre-molding apparatus 43 is penetrating platform header board 31 and after penetrating platform between plate 40.
As Fig. 4 shows, 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 arranged on oil motor seat 35, and oil motor seat 35 is enclosed within 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 front cover 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 is directly installed in shaft coupling 33 one end, and shaft coupling 33 other end is supported by bearing 6, bearing 7 and fixed by nut 8.
Above-mentioned cylinder tube 40 with penetrate platform after plate be integral type, may also be split type.
Injection or penetrate when moving back, oil in-cylinder pressure acts on thrust disc 36 by injection ram 41, injecting piston rod 39, thrust disc 36 1 aspect is injected thrust by shaft coupling 33 and is transmitted on screw rod 3, and thrust disc 36 drives whole pre-molding apparatus 43 to do straight reciprocating motion under the guiding of pull bar 32 by oil motor seat 35 simultaneously.
During preformed, preformed motor 34 drives shaft coupling 33 to drive screw rod 3 to rotate by its hollow internal spline, and shaft coupling 33 drives whole pre-molding apparatus 43 and injecting piston rod 39, piston 41 under the guiding of pull bar 32, do passive straight reciprocating motion by thrust disc 36 under screw rod reaction force acts simultaneously.Like this, the transmission both having achieved axial force between shaft coupling and injecting piston rod turn eliminates the transmission of moment of torsion.
As shown in Figure 4, when shaft coupling and bearing I&M thereof, pull down semi-ring 37, penetrate deactuate and do, piston rod 39 separates with thrust disc 36 under the effect of penetrating the power of moving back, and the replacing now carrying out shaft coupling and bearing thereof is very convenient.
Claims (2)
1. injection molding mechanism with single cylinder, comprise barrel, penetrate platform header board, pre-molding apparatus, injection device, penetrate plate after platform, barrel is installed on penetrates front edge of board before platform, it is characterized in that: after penetrating platform header board and penetrating platform, plate connects into a rigid unitary framework by pull bar, pre-molding apparatus is penetrating platform header board or barrel and after penetrating platform between plate or injection cylinder device, pre-molding apparatus comprises preformed motor, preformed motor base, shaft coupling, bearing, thrust disc, preformed motor base is led by pull bar, preformed motor is arranged on preformed motor base, the output shaft of preformed motor is hollow splined shaft, shaft coupling is through the hollow splined shaft of preformed motor, shaft coupling one end is connected with screw rod, the other end is by bearings and be connected with thrust disc, injection device is installed on to be penetrated after platform on plate, the injection catch bar of injection device and thrust disc are fixed.
2. injection molding mechanism with single cylinder 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 CN102126277A (en) | 2011-07-20 |
| CN102126277B true CN102126277B (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010300318.3A Active CN102126277B (en) | 2010-01-14 | 2010-01-14 | Injection molding mechanism with single cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527034A (en) * | 2014-12-15 | 2015-04-22 | 湖南鑫高自动化设备有限公司 | Injection-stretch-blow injection molding injection method and device for plastic hollow products |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| CN107053617B (en) * | 2017-03-15 | 2023-03-28 | 刘镇江 | Electric injection device of injection molding 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 |
| 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 |
| 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 |
Citations (4)
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004056209B4 (en) * | 2004-11-22 | 2011-06-01 | Siemens Ag | Linearly displaceable rotary drive for a plastic injection molding machine |
-
2010
- 2010-01-14 CN CN201010300318.3A patent/CN102126277B/en active Active
Patent Citations (4)
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527034A (en) * | 2014-12-15 | 2015-04-22 | 湖南鑫高自动化设备有限公司 | Injection-stretch-blow injection molding injection method and device for plastic hollow products |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102126277A (en) | 2011-07-20 |
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