CN203805266U - Wear-resistant driving shaft structure with single-cylinder injection - Google Patents
Wear-resistant driving shaft structure with single-cylinder injection Download PDFInfo
- Publication number
- CN203805266U CN203805266U CN201420266442.6U CN201420266442U CN203805266U CN 203805266 U CN203805266 U CN 203805266U CN 201420266442 U CN201420266442 U CN 201420266442U CN 203805266 U CN203805266 U CN 203805266U
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- wear
- piston rod
- soft metal
- resisting
- transmission shaft
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Abstract
A wear-resistant driving shaft structure with single-cylinder injection comprises a driving shaft and an injection piston rod. The driving shaft is provided with a fixed end and a driving end, the fixed end is fixedly connected with a coupling, the driving end is of a cuboid structure and is provided with a high-hardness surface, an axial hole is formed in the injection piston rod inside, a wear-resistant soft metal sleeve is imbedded in the inner wall of the axial hole, the inner wall of the wear-resistant soft metal sleeve is square and the distance from the inner wall to the central axis of the injection piston rod is smaller than the distance from the inner wall of the axial hole to the central axis of the injection piston rod, and the driving end is axially in sliding fit with the inner wall of the wear-resistant soft metal sleeve. The wear-resistant driving shaft structure has the advantage of wear resistance, driving precision is guaranteed, tiny metal particles are less easily to occur, and operation quality of a sealing piece and a hydraulic valve is guaranteed.
Description
Technical field
The utility model relates to injection-moulding device technical field, is specifically that a kind of single cylinder is injected wear-resistant transmission shaft structure.
Background technology
Single cylinder injection of plastic injection (mo(u)lding) machine generally adopts splined shaft as power transmission shaft, to complete the spinning movement of screw rod, wherein hydraulic motor drives splined shaft to rotate by shaft coupling, splined shaft gos deep in the lumen orifice of injecting piston rod, drive injecting piston rod to rotate together, injecting piston rod front end and screw rod are fixed together.
In plasticizing process, injecting piston rod is under the double action of hydraulic motor and molten plastic promotion, while rotating, move axially, pressure and the axially movable friction of motion of spinning movement will be born in the keyway position of splined shaft, keyway contact-making surface easily weares and teares, cause radial clearance to expand, affect the precision that rotatablely moves, produce noise, and because wearing and tearing also can produce tiny metallic particles, once and tiny metallic particles is sneaked into hydraulic system, be difficult to remove, seal and hydraulic valve will be brought to serious harm.
Utility model content
The technical problems to be solved in the utility model is, provides a kind of wear-resistant, and effective guarantee transmission accuracy, is difficult for producing tiny metallic particles and the single cylinder of effective guarantee seal and hydraulic valve work quality is injected wear-resistant transmission shaft structure.
The technical solution of the utility model is: comprise power transmission shaft and injecting piston rod, power transmission shaft forms stiff end and driving end successively, stiff end is fixedly connected with the shaft coupling by fluid motor-driven, driving end global formation becomes rectangular structure, driving end is provided with high rigidity top layer, on injecting piston rod, have axial bore, on the inwall of the axial bore of close openend, be inlaid with wear-resisting soft metal cover, the inwall of wear-resisting soft metal cover is square, the inwall of wear-resisting soft metal cover to the distance of injecting piston rod central axis is less than axial bore inwall to the distance of injecting piston rod central axis, the inwall axial sliding fit of driving end and wear-resisting soft metal cover.
High rigidity top layer is the high hardness wear-resisting top layer forming after chromium plating top layer or via nitride are processed; Wear-resisting soft metal cover is wear-resisting copper sheathing or wear-resisting tin cover.
Adopt after above structure, the utlity model has following advantage: single cylinder of the present utility model is injected wear-resistant transmission shaft structure, and to change traditional splined shaft into driving end integral body be the power transmission shaft of rectangular structure, this power transmission shaft is fixedly connected with the shaft coupling by fluid motor-driven, injecting piston rod is slidably matched with the driving end of power transmission shaft by being embedded in the wear-resisting soft metal cover of axial bore, for successfully realizing and being slidably matched, the inwall of wear-resisting soft metal cover is also designed to square, power transmission shaft is circumferentially relative fixing with injecting piston rod like this, axially can relative sliding, the driving end that adds power transmission shaft is provided with high rigidity top layer, hardness is very high, and relatively power transmission shaft in axial sliding injecting piston rod in axial bore, to be inlaid with inwall be square wear-resisting soft metal cover, like this in plasticizing process, wear-resisting soft metal cover is little with the contact surface coefficient of friction of driving end that is provided with high rigidity top layer, frictional force is little, both are difficult for being worn, more can not produce tiny metallic particles, thereby can not exert an influence to seal and hydraulic valve, simultaneously also effective guarantee transmission accuracy.
Accompanying drawing explanation
Fig. 1 is longitudinal cross-sectional schematic that the utility model single cylinder is injected wear-resistant transmission shaft structure.
Fig. 2 is the horizontal cross-sectional schematic that the utility model single cylinder is injected wear-resistant transmission shaft structure.
Shown in figure, 1, power transmission shaft, 1.1, stiff end, 1.2, driving end, 2, injecting piston rod, 2.1, axial bore, 3, shaft coupling, 4, wear-resisting soft metal cover, 5, injection cylinder protecgulum, 6, injection cylinder cylinder, 7, injection cylinder bonnet.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Single cylinder of the present utility model is injected wear-resistant transmission shaft structure, comprises injecting piston rod 2, injection cylinder protecgulum 5, injection cylinder cylinder 6, power transmission shaft 1, shaft coupling 3 and injection cylinder bonnet 7.Injecting piston rod 2 forms injection cylinder with injection cylinder protecgulum 5, injection cylinder cylinder 6, injection cylinder bonnet 7, and injecting piston rod 2 axial stretching in injection cylinder is realized injection and penetrates deactuate and do.
Power transmission shaft 1 forms stiff end 1.1 and driving end 1.2 successively, and stiff end 1.1 is fixedly connected with the shaft coupling 3 by fluid motor-driven, and shaft coupling 3 is axially fixed on injection cylinder bonnet 7 by deep groove ball bearing and thrust ball bearing.
Unlike the prior art, driving end 1.2 global formations become rectangular structure, there are four rectangle contact-making surfaces, and the surface of driving end 1.2 is also provided with high rigidity top layer, in the present embodiment, this high rigidity top layer is chromium plating top layer, carries out chrome-faced processing, certainly, can also be the high hardness wear-resisting top layer forming after via nitride is processed.
On injecting piston rod 2, have axial bore 2.1, hold the driving end 1.2 of power transmission shaft 1 when retreating, on the inwall near the axial bore 2.1 of the open end of axial bore 2.1, be inlaid with wear-resisting soft metal cover 4 simultaneously.The inwall of this wear-resisting soft metal cover 4 is also square, also has four rectangle contact-making surfaces.In the present embodiment, wear-resisting soft metal cover 4 is wear-resisting copper sheathing, certainly also can adopt wear-resisting tin cover, and copper and tin not only have antiwear characteristic, and quality is softer, produces CONTACT WITH FRICTION with hard, wear-resistant metal as chromium, and coefficient of friction is little, not easy to wear.The inwall of wear-resisting soft metal cover 4 to the distance of injecting piston rod 2 central axis is less than axial bore 2.1 inwalls to the distance of injecting piston rod 2 central axis in addition, after that is to say that wear-resisting soft metal cover 4 is embedded on the inwall of axial bore, the outstanding axial bore inwall of inwall of wear-resisting soft metal cover 4 arranges.
The driving end 1.2 that single cylinder of the present invention is injected wear-resistant transmission shaft structure also with the inwall axial sliding fit of wear-resisting soft metal cover 4, power transmission shaft 1 and 2 of injecting piston rods can slide to axial like this, can relatively circumferentially fix again.
During plasticizing action, 3 rotations of fluid motor-driven shaft coupling, shaft coupling 3 drives power transmission shaft 1 rotation, power transmission shaft 1 to drive 4 rotations together with injecting piston rod 2 of wear-resisting soft metal cover, and injecting piston rod 2 drive screws complete plasticizing action.Meanwhile, molten plastic lead-screw moves backward together with injecting piston rod 2, wear-resisting soft metal cover 4, and wear-resisting soft metal cover 4 endwisely slips on driving end 1.2 surfaces of power transmission shaft 1.
Single cylinder of the present invention is injected wear-resistant transmission shaft structure in process in axial sliding, can not produce tiny metallic particles because of sliding-contact, driving end 1.2 is little with the contact surface coefficient of friction coefficient of friction of wear-resisting soft metal cover 4, and frictional force is little, and both are difficult for being worn.
Claims (2)
1. a single cylinder is injected wear-resistant transmission shaft structure, comprise power transmission shaft (1) and injecting piston rod (2), power transmission shaft (1) forms stiff end (1.1) and driving end (1.2) successively, stiff end (1.1) is fixedly connected with the shaft coupling (3) by fluid motor-driven, it is characterized in that: driving end (1.2) global formation becomes rectangular structure, driving end (1.2) is provided with high rigidity top layer, on injecting piston rod (2), have axial bore (2.1), on the inwall of the axial bore (2.1) of close openend, be inlaid with wear-resisting soft metal cover (4), the inwall of wear-resisting soft metal cover (4) is square, the inwall of wear-resisting soft metal cover (4) to the distance of injecting piston rod (2) central axis is less than axial bore (2.1) inwall to the distance of injecting piston rod (2) central axis, the inwall axial sliding fit of driving end (1.2) and wear-resisting soft metal cover (4).
2. a kind of single cylinder according to claim 1 is injected wear-resistant transmission shaft structure, it is characterized in that: high rigidity top layer is the high hardness wear-resisting top layer forming after chromium plating top layer or via nitride are processed; Wear-resisting soft metal cover (4) is wear-resisting copper sheathing or wear-resisting tin cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420266442.6U CN203805266U (en) | 2014-05-22 | 2014-05-22 | Wear-resistant driving shaft structure with single-cylinder injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420266442.6U CN203805266U (en) | 2014-05-22 | 2014-05-22 | Wear-resistant driving shaft structure with single-cylinder injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203805266U true CN203805266U (en) | 2014-09-03 |
Family
ID=51444068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420266442.6U Expired - Fee Related CN203805266U (en) | 2014-05-22 | 2014-05-22 | Wear-resistant driving shaft structure with single-cylinder injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203805266U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626290A (en) * | 2016-11-30 | 2017-05-10 | 宁波欧意莱机械制造有限公司 | Mould opening/closing mechanism of injection moulding machine |
| CN107013465A (en) * | 2017-06-16 | 2017-08-04 | 珠海格力电器股份有限公司 | Helical-lobe compressor |
-
2014
- 2014-05-22 CN CN201420266442.6U patent/CN203805266U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626290A (en) * | 2016-11-30 | 2017-05-10 | 宁波欧意莱机械制造有限公司 | Mould opening/closing mechanism of injection moulding machine |
| CN107013465A (en) * | 2017-06-16 | 2017-08-04 | 珠海格力电器股份有限公司 | Helical-lobe compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20170522 |