CN203046181U - Draw bar mechanism of injection molding machine - Google Patents
Draw bar mechanism of injection molding machine Download PDFInfo
- Publication number
- CN203046181U CN203046181U CN 201220647771 CN201220647771U CN203046181U CN 203046181 U CN203046181 U CN 203046181U CN 201220647771 CN201220647771 CN 201220647771 CN 201220647771 U CN201220647771 U CN 201220647771U CN 203046181 U CN203046181 U CN 203046181U
- Authority
- CN
- China
- Prior art keywords
- draw bar
- pull bar
- cutting sleeve
- conical surface
- cutting ferrule
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a draw bar mechanism of an injection molding machine. The draw bar mechanism comprises a draw bar and a cutting sleeve, wherein a smooth inner conical surface is arranged inside the cutting sleeve; a same conical surface, which is matched with the smooth inner conical surface of the cutting sleeve, is correspondingly arranged on the draw bar; the cutting sleeve is symmetrically sectioned into two halves; and the draw bar and a draw bar sleeve enter a solid plate draw bar hole and are fixed on a solid plate. Large friction holding force is generated to fix the draw bar by gradient expansion between the cutting sleeve and the draw bar in a draw bar component, and a tensile load is loaded by friction force of the inner surface of a head plate draw bar hole and the outer surface of the cutting sleeve of the draw bar, so that the problem of stress concentration of a thread section is removed, the anti-fatigue performance of the draw bar is greatly improved, and the service life of the draw bar is prolonged.
Description
Technical field
The utility model relates to a kind of drag link mechanism of injection machine.
Background technology
At present in the clamping of injection machine; pull bar provides tensile load by screw engagement basically; as shown in Figure 3; axial load in this structure is all born by screw thread, and thread segment 12 is concentrated because of the unavoidable stress of reasons such as material, processing, and each axial load of detaining on the thread is distributed inhomogeneous again; add the shearing force that cope match-plate pattern flexural deformation is applied to pull bar; stressed just more complicated, thus the very fast fatigue of pull bar caused, lost efficacy to fracture eventually.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the above-mentioned deficiency of prior art and drag link mechanism that a kind of injection machine is provided, makes pull bar can prolong the pull bar life-span.
The utility model solves the problems of the technologies described above the technical scheme that adopts: the drag link mechanism of injection machine, comprise pull bar, it is characterized in that: cutting ferrule also is set, smooth internal conical surface is set in the cutting ferrule, the identical taper seat that relative set and the smooth internal conical surface of cutting ferrule match on the pull bar, the cutting ferrule symmetry is dissectd and is split into two double, and pull bar and pull bar pack into the solid plate tie rod hole, are fixed on the solid plate.
During assembling, utilize the wedge shape gradient in cooperating when the pull bar axially loaded, to drive two double cutting ferrules towards the pattern hole radial compression, thereby produce the friction bond stress and fix pull bar, and bear most of tensile load, the thread segment of pull bar still keeps, after extruding fully, screw the top nut applying and live solid plate, bear protecting of fraction and put forth effort.
Compared with prior art, advantage of the present utility model is: the friction bond stress fixes pull bar thereby produce greatly by the cutting ferrule in the rod assembly and the expansion of the wedge shape gradient between pull bar, frictional force by a plate tie rod hole inner surface and pull bar cutting ferrule outer surface is born tensile load, cleared up the problem of stress concentration of thread segment, greatly improve the anti-fatigue performance of pull bar, prolonged the service life of pull bar.
Description of drawings
Fig. 1 is the cutting ferrule steady brace figure of the utility model embodiment.
Fig. 2 is the rod assembly figure of the utility model embodiment.
Fig. 3 is the draw-bar machine composition of existing injection machine.
The specific embodiment
Be further described below in conjunction with the utility model of accompanying drawing embodiment.
As shown in Figure 1, 2, the drag link mechanism of injection machine, comprise pull bar 1, cutting ferrule 2 also is set, smooth internal conical surface 21 is set in the cutting ferrule 2, the identical taper seat 11 that relative set and the smooth internal conical surface of cutting ferrule match on the pull bar 1, the cutting ferrule symmetry is dissectd and is split into two double, pull bar and pull bar pack into solid plate 4 tie rod holes, are fixed on the solid plate 4.
As shown in Figure 1, the pull bar 1 of injection machine puts the tie rod hole that cutting ferrule 2 inserts solid plate 4, and fixing with nut 3.
Claims (1)
1. the drag link mechanism of injection machine, comprise pull bar, it is characterized in that: cutting ferrule also is set, smooth internal conical surface is set in the cutting ferrule, the identical taper seat that relative set and the smooth internal conical surface of cutting ferrule match on the pull bar, the cutting ferrule symmetry is dissectd and is split into two double, and pull bar and pull bar pack into the solid plate tie rod hole, are fixed on the solid plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220647771 CN203046181U (en) | 2012-11-30 | 2012-11-30 | Draw bar mechanism of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220647771 CN203046181U (en) | 2012-11-30 | 2012-11-30 | Draw bar mechanism of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203046181U true CN203046181U (en) | 2013-07-10 |
Family
ID=48729173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220647771 Withdrawn - After Issue CN203046181U (en) | 2012-11-30 | 2012-11-30 | Draw bar mechanism of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203046181U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057065A (en) * | 2012-11-30 | 2013-04-24 | 海天塑机集团有限公司 | Pull rod mechanism of injection molding machine |
| CN106426757A (en) * | 2016-10-25 | 2017-02-22 | 博创智能装备股份有限公司 | Fixed die plate and pull rod connecting structure |
-
2012
- 2012-11-30 CN CN 201220647771 patent/CN203046181U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057065A (en) * | 2012-11-30 | 2013-04-24 | 海天塑机集团有限公司 | Pull rod mechanism of injection molding machine |
| CN106426757A (en) * | 2016-10-25 | 2017-02-22 | 博创智能装备股份有限公司 | Fixed die plate and pull rod connecting structure |
| CN106426757B (en) * | 2016-10-25 | 2019-04-23 | 博创智能装备股份有限公司 | A kind of solid plate bar jointing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130710 Effective date of abandoning: 20160518 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |