CN203697373U - Drawbar mechanism of injection molding machine - Google Patents
Drawbar mechanism of injection molding machine Download PDFInfo
- Publication number
- CN203697373U CN203697373U CN201320831845.6U CN201320831845U CN203697373U CN 203697373 U CN203697373 U CN 203697373U CN 201320831845 U CN201320831845 U CN 201320831845U CN 203697373 U CN203697373 U CN 203697373U
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- China
- Prior art keywords
- section
- nut
- pull bar
- drawbar
- shaft part
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- Withdrawn - After Issue
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Abstract
The utility model discloses a drawbar mechanism of an injection molding machine. The drawbar mechanism comprises a head molding board of the injection molding machine, a drawbar and a nut, wherein the drawbar passes through the head molding board, is fixed by the nut and comprises a threaded section and a supporting shaft section; the nut comprises internal threads and a supporting sleeve section; when the threaded section formed by fixing the nut and the drawbar is screwed, the supporting shaft section and the supporting sleeve section are in clearance fit to form a supporting section. According to the utility model, the supporting sleeve section on the nut restrains the supporting shaft section of the drawbar in the radial direction to protect the threaded section of the drawbar, so that bending of the threaded section of the drawbar is avoided; moreover, the supporting sleeve section and the supporting shaft are matched in a positioning manner, so that the bending of the threaded section of the drawbar is obviously prevented. Location fit of the supporting sleeve at the opening of a drawbar hole of the head molding board of the injection molding machine and the external supporting shaft section of the drawbar nut is further utilized to weaken interferences on stress of a ring-shaped surface when the molding board deforms, so that the threaded section is indirectly protected. An unloading slot is further formed, so that the bending position of the drawbar is flexible and controllable.
Description
Technical field
The utility model relates to the drag link mechanism of injection machine, particularly improves the anti-bending ability of pull rod screw section.
Background technology
Drag link mechanism is the key mechanism of supporting mould and miscellaneous part, and it comprises pull bar and nut, and pull bar coordinates with nut by the screw thread on it makes pull bar location.Existing injection machine drag link mechanism, pull bar and nut are to provide tensile load by the mode of screw-threaded engagement substantially, axial load in structure is all born by the screw thread of pull bar, and pull rod screw section because of the unavoidable stress of the reason such as material, processing concentrate, axial load on each button thread is distributed inhomogeneous again, is particularly applied to the shearing force of pull rod screw part when template flexural deformation, very severe, result causes pull bar very fast tired, loses efficacy eventually to fracture.
Summary of the invention
The technical problems to be solved in the utility model is overcome the above-mentioned deficiency of prior art and a kind of injection machine drag link mechanism is provided, and thread segment when injection machine pull bar is coordinated with nut on pull bar is protected, and is not easy to be bent.
It is as follows that the utility model solves the problems of the technologies described above adopted technical scheme:
For convenience of explanation of the present utility model, passive this region of matching with a certain circular hole in cylindrical shape part is called a shaft part, is called spider section and be enclosed within the circular hole the preceding paragraph coordinating with a shaft part on a shaft part, and the two is combined together to form supporting section.
While cooperation as pull bar and nut, the sub-fraction in the forward and backward region of pull rod screw section is called a shaft part, and the forward and backward bore region of nut inner thread section and pull bar prop up the part that shaft part coordinates and be called spider section.
In like manner, when nut coordinates with a plate, right overhead when plate holding nut, on plate, one section of holding nut is called a shaft part, that section coordinating with a shaft part in corresponding nut is spider section, or in the time that nut enters plate hole, the supporting section arranging on nut outer round surface is a shaft part, corresponding plate tie rod hole and nut prop up that section that shaft part matches and are spider section.
Injection machine drag link mechanism, comprise injection moulding head template, pull bar and nut, pull bar passes head mould plate and is fixed by nut, it is characterized in that: described pull bar comprises thread segment, a shaft part, described nut comprises internal thread, spider section, after the thread segment of nut and pull bar screws, spider section and fulcrum section matched in clearance form supporting section.
Better, above-mentioned matched in clearance coordinates or is slidably matched for locating.
Better, above-mentioned spider section and the intersegmental gap of fulcrum are less better, and the gap effect that goes to zero is better, thereby make thread segment be subject to shearing to be tending towards minimum because can make like this fulcrum better be subject to spider constraint, have effectively protected screw thread.
Better, above-mentioned supporting section is respectively in the front and back of the screw thread section of screwing.
Better, above-mentioned nut arranged outside is propped up shaft part, on corresponding plate, spider section is set, and when pull bar is fixed to head mould plate by nut, nut props up shaft part and head mould plate spider section forms supporting section.
Better, nut inner side arranges spider section, and a shaft part is set on corresponding plate, and when pull bar is fixed to head mould plate by nut, nut spider section and head mould plate prop up shaft part and form supporting section.
Better, compensating groove is also set on pull bar, and shape and position controlled flexibly.
The form of thread of above-mentioned thread segment is not restricted, and can be the screw thread of any shapes such as triangle thread, rectangular thread, trapezoidal thread, saw-tooth thread or circular thread.
Between the shaft part of above-mentioned pull bar and thread segment, open escape, shape, the degree of depth and the width of escape can be with reference to GB, but does not do strict restriction.
The material of above-mentioned pull bar and nut is not restricted, and can be any type of material.
The utility model has the advantage of: the radial constraint that pull bar is propped up to shaft part by the spider section on nut is protected pull rod screw section, avoids or weaken the bending of pull rod screw section; Coordinate with the location of fulcrum by spider section, the bending of pull rod screw section is obviously protected.Also utilize injection moulding head form tie hole spider section to coordinate with the location that pull-rod nut props up shaft part outward, while having weakened template deformation, on the stressed impact of ring surface, indirectly protect thread segment.Also be provided with compensating groove, make the position of pull bar bending and degree controlled flexibly.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment pull bar.
Fig. 2 is the structural representation of the utility model embodiment nut.
Fig. 3 is the structural representation of the utility model embodiment head mould plate.
Fig. 4 is the structural representation of the utility model embodiment injection machine drag link mechanism.
Fig. 5 is the structural representation of another embodiment of the utility model drag link mechanism.
Fig. 6 is the structural representation of the another embodiment of the utility model drag link mechanism.
Fig. 7 is the structural representation of the another embodiment of the utility model drag link mechanism.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is further described the utility model.
As shown in Figure 1, injection machine pull bar 1 head arranges thread segment 19, and the forward and backward region division adjacent with thread segment 19 props up shaft part 17 and a shaft part 18.
Between above-mentioned shaft part 17 and thread segment 19, escape 20 is also set, so that processing.
Above-mentioned shaft part 17, a shaft part 18, escape 20 and thread segment 19 are coaxial.
On above-mentioned pull bar 1, compensating groove 3 is also set, controls the bending of pull bar 1 by profile and position.
As shown in Figure 2, nut inner thread section 12 arranges spider section 11 above, and nut inner thread section 12 arranges spider section 16 below.
Between above-mentioned spider section 11 and internal thread segment 12, escape 10 is set, between spider section 16 and internal thread segment 12, escape 13 is set, so that processing.
Above-mentioned spider 11, spider 16, escape 10, escape 13 and thread segment 12 are coaxial.
Outside, above-mentioned nut one end also arranges a shaft part 15, and shaft part 15 one end and nut side form ring surface 14, and this ring surface 14 hardens and is close on head mould plate while closing with head mould.
As shown in Figure 3, tie rod hole 21 is set on head mould plate 2, head mould plate spider section 22 is also set, this spider section 22 coordinates formation supporting section with the lateral branch shaft part 15 on nut.
As shown in Figure 4, the drag link mechanism of injection machine, it comprises pull bar 1, head mould plate 2, pull-rod nut 8, after the tie rod hole 22 that pull bar 1 passes in head mould plate 2, is fixed by pull-rod nut 8.
When above-mentioned pull bar and nut are fixed, nut inner thread and pull bar external screw thread screw the formation screw thread section of screwing 7 and link together securely, form spider and fulcrum faying face 6 at pull bar and nut thread section 7 front ends by a shaft part of pull bar and the spider section of nut, thereby retrain and prop up shaft part and prevent the bending to the internal whorl section of screwing 7 by spider section.
Above-mentioned pull bar and the nut thread section of screwing 7 rear ends form spider and fulcrum faying face 9 by the shaft part of pull bar and the spider section of nut, thereby are retrained and propped up shaft part and protect better the screw thread section of screwing 7 by spider section.
Compensating groove 3 is also set on above-mentioned pull bar, to weaken better, shifts the load that the screw thread section of screwing 7, faying face 6 and faying face 9 are subject to, prevent that the screw thread section of screwing of pull bar from concentrating stressed and destroying.
As shown in Figure 1, Figure 2, Figure 4 shows; shaft part 15 is propped up in pull-rod nut 8 outer surface settings and ring surface 14 coordinates the annular faying face 5 of formation with spider 22 and the tie rod hole end face of head mould plate 2; this cooperation can be easily inserted in and be advisable with nut; be mainly weaken template 2 while being out of shape on the stressed impact of ring surface 14, indirectly protect thread segment.
Above-mentioned spider takes minim gap location to coordinate with fulcrum or little gap is slidably matched, and gap is as far as possible little and guarantee that nut can freely screw in back-out.
Above-mentioned drag link mechanism also has various embodiment, as shown in Fig. 5, Fig. 6, Fig. 7.
Fig. 5 is another embodiment, and it has only reduced spider and fulcrum faying face 4 between a pull bar and a plate compared with Fig. 3, in the time that condition is not too strict, also can meet the demands.
Fig. 6 is another embodiment, and it changes the spider between pull bar and a plate and fulcrum faying face 4 setting positions compared with Fig. 3, will prop up shaft part and be arranged on a plate, and spider section is arranged on nut, to be applicable to various actual needs.
Fig. 7 is another embodiment, and it changes the relation between a plate and nut compared with Fig. 3, mutually do not support, all the other are constant, and owing to possessing fulcrum, a nested structure between pull bar and nut, therefore anti-bending effect still can be played in the location of the nut in drag link mechanism.
Claims (7)
1. injection machine drag link mechanism, comprise injection moulding head template, pull bar and nut, pull bar passes head mould plate and is fixed by nut, it is characterized in that: described pull bar comprises thread segment, a shaft part, described nut comprises internal thread, spider section and props up shaft part outward, after the thread segment of nut and pull bar screws, spider section and fulcrum section matched in clearance form supporting section.
2. injection machine drag link mechanism as claimed in claim 1, is characterized in that: described matched in clearance coordinates or is slidably matched for locating.
3. injection machine drag link mechanism as claimed in claim 1 or 2, is characterized in that: described supporting section is respectively in the front and back of the screw thread section of screwing.
4. injection machine drag link mechanism as claimed in claim 1 or 2, it is characterized in that: described nut arranged outside is propped up shaft part, corresponding plate tie rod hole arranges spider section, and when pull bar is fixed to head mould plate by nut, nut props up shaft part and head mould plate spider section forms supporting section.
5. injection machine drag link mechanism as claimed in claim 1, it is characterized in that: the forward and backward two region division spider sections of described nut inner thread, on corresponding pull bar, forward and backward two region divisions of external thread section prop up shaft part, when pull bar is fixed to head mould plate by nut, nut spider section and head mould plate prop up the corresponding formation supporting section of shaft part.
6. injection machine drag link mechanism as claimed in claim 1, is characterized in that: variable compensating groove is also set on described pull bar.
7. injection machine drag link mechanism as claimed in claim 1, is characterized in that: described pull bar props up escape is also set between shaft part and thread segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320831845.6U CN203697373U (en) | 2013-12-17 | 2013-12-17 | Drawbar mechanism of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320831845.6U CN203697373U (en) | 2013-12-17 | 2013-12-17 | Drawbar mechanism of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203697373U true CN203697373U (en) | 2014-07-09 |
Family
ID=51047867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320831845.6U Withdrawn - After Issue CN203697373U (en) | 2013-12-17 | 2013-12-17 | Drawbar mechanism of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203697373U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103660143A (en) * | 2013-12-17 | 2014-03-26 | 海天塑机集团有限公司 | Drag-link 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 |
-
2013
- 2013-12-17 CN CN201320831845.6U patent/CN203697373U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103660143A (en) * | 2013-12-17 | 2014-03-26 | 海天塑机集团有限公司 | Drag-link mechanism of injection molding machine |
| CN103660143B (en) * | 2013-12-17 | 2015-10-28 | 海天塑机集团有限公司 | Injection machine drag link mechanism |
| 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: 20140709 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |