CN201982448U - Pull-rod nut of injection molding machine - Google Patents
Pull-rod nut of injection molding machine Download PDFInfo
- Publication number
- CN201982448U CN201982448U CN2011200007695U CN201120000769U CN201982448U CN 201982448 U CN201982448 U CN 201982448U CN 2011200007695 U CN2011200007695 U CN 2011200007695U CN 201120000769 U CN201120000769 U CN 201120000769U CN 201982448 U CN201982448 U CN 201982448U
- Authority
- CN
- China
- Prior art keywords
- nut
- pull
- nut body
- rod
- stress
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to a pull-rod nut of an injection molding machine, which comprises a nut body, wherein a round hole is formed in the middle of the nut body, and threads are formed on the inner surface of the nut body. The pull-rod nut is characterized in that the round hole is combined by a conoid screw hole and a cylindrical screw hole; the inner surface of the head part of the round hole inclines towards the outer surface of the nut body to form the conoid screw hole, and the inclination angle of the conoid screw hole is 5 degrees; the thread pitch of the threads is 4 mm; the length H between the end face of the head part of the nut body and a nut tightening slot is 30 mm; and the nut tightening slot used for tightening is formed on the outer end surface of the nut body. The stress point of the pull-rod nut is far away from a head plate, the stress of the several teeth at the head part of the nut body is reduced, and the threads are stressed uniformly, so that the stress on the threads of a pull rod is distributed more uniformly, and the stress is far lower than the fatigue limit.
Description
Technical field
The utility model relates to a kind of injection machine parts, and the pull-rod nut in especially a kind of plastic-injection moulding machine belongs to mechanical field.
Background technique
Injection machine is a kind of machine of injection-moulding plastic, and in the process of its matched moulds, plate produces distortion through the power of pull-rod nut to pull bar owing to being subjected to the end.During work, a plate stress deformation is delivered to pull bar through pull bar, forms composite alternating stress.Pull bar causes fatigue ruption under the effect of this composite alternating stress, fracture even, thus cause the accident.Therefore, avoiding the fracture of pull bar is one of big event of injection machine design.
Mainly the taking of the design of existing injection machine increases the way of the diameter of pull bar, perhaps strengthens a plate intensity, and the way that reduces compound stress realizes.The result is but often not fully up to expectations.One is the principal element of not recognizing the pull bar fracture, has blindly strengthened some places that produce little effect; One is to have increased cost greatly.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of pull-rod nut of injection machine is provided, and makes that the stress that is subjected on the pull rod screw is more uniform, and stress is well below fatigue limit.
According to the technological scheme that the utility model provides, the pull-rod nut of described injection machine comprises nut body, and the middle part of described nut body is provided with circular hole, is provided with screw thread at the internal surface of nut body; Feature is: described circular hole is the assemblying body of cone shape screw and cylindrical shape screw.
The internal surface of described circular hole head is formed slopely the screw of cone shape to the outer surface of nut body.
The angle of inclination of described cone shape screw is 5 °.The pitch of described screw thread is 4mm.
The head end of described nut body is to the length H=30mm of nut screwing clamping groove.
The exterior edge face of described nut body is provided with the nut screwing clamping groove of fastening usefulness.
The force bearing point of pull-rod nut described in the utility model is away from a plate, several leading stressed the reducing of tooth, and screw thread is stressed evenly; Thereby the stress that is subjected on the pull rod screw is more uniform, and stress is well below fatigue limit.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a sectional view of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with concrete accompanying drawing.
As Fig. 1～shown in Figure 2: the pull-rod nut of injection machine comprises nut body 1, screw thread 2, nut screwing clamping groove 3, circular hole 4 etc.
The utility model comprises nut body 1, and the middle part of described nut body 1 is provided with circular hole 4, is provided with screw thread 2 at the internal surface of nut body 1; Described circular hole 4 is the assemblying body of cone shape screw and cylindrical shape screw;
The internal surface of described circular hole 4 heads is formed slopely the screw of cone shape to the outer surface of nut body 1;
The angle of inclination of described cone shape screw is 5 °;
The pitch of described screw thread 2 is 4mm;
The head end of described nut body 1 is to the length H=30mm of nut screwing clamping groove 3;
The exterior edge face of described nut body 1 is provided with the nut screwing clamping groove 3 of fastening usefulness.
Working principle of the present utility model: the pull bar on pull-rod nut described in the utility model and the injection machine is used, because the head internal surface of middle circular hole 4 tilts to the outer surface of nut body 1, make the force bearing point of pull-rod nut away from several teeth of head, several leading stressed the reducing of tooth, screw thread 2 stressed evenly, thereby make that the stress that is subjected on the pull rod screw is more uniform, stress is well below fatigue limit.
Claims (6)
1. the pull-rod nut of an injection machine comprises nut body (1), and the middle part of described nut body (1) is provided with circular hole (4), is provided with screw thread (2) at the internal surface of nut body (1); It is characterized in that: described circular hole (4) is the assemblying body of cone shape screw and cylindrical shape screw.
2. the pull-rod nut of injection machine according to claim 1, it is characterized in that: the internal surface of described circular hole (4) head is formed slopely the screw of cone shape to the outer surface of nut body (1).
3. the pull-rod nut of injection machine according to claim 1, it is characterized in that: the angle of inclination of described cone shape screw is 5 °.
4. the pull-rod nut of injection machine according to claim 1, it is characterized in that: the pitch of described screw thread (2) is 4mm.
5. the pull-rod nut of injection machine according to claim 1, it is characterized in that: the head end of described nut body (1) is to the length H=30mm of nut screwing clamping groove (3).
6. the pull-rod nut of injection machine according to claim 1, it is characterized in that: the exterior edge face of described nut body (1) is provided with the nut screwing clamping groove (3) of fastening usefulness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200007695U CN201982448U (en) | 2011-01-04 | 2011-01-04 | Pull-rod nut of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200007695U CN201982448U (en) | 2011-01-04 | 2011-01-04 | Pull-rod nut of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201982448U true CN201982448U (en) | 2011-09-21 |
Family
ID=44609910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200007695U Expired - Lifetime CN201982448U (en) | 2011-01-04 | 2011-01-04 | Pull-rod nut of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201982448U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954087A (en) * | 2012-11-21 | 2013-03-06 | 无锡海天机械有限公司 | Elastic pull-rod nut of injection molding machine |
| CN113290799A (en) * | 2021-06-09 | 2021-08-24 | 北京化工大学 | Injection molding machine pull rod device |
-
2011
- 2011-01-04 CN CN2011200007695U patent/CN201982448U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954087A (en) * | 2012-11-21 | 2013-03-06 | 无锡海天机械有限公司 | Elastic pull-rod nut of injection molding machine |
| CN113290799A (en) * | 2021-06-09 | 2021-08-24 | 北京化工大学 | Injection molding machine pull rod device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102705341B (en) | Left-handed and right-handed rotation nut locking device for large-diameter shaft end | |
| CN201982448U (en) | Pull-rod nut of injection molding machine | |
| CN202623213U (en) | Clamping mechanism for two-plate type injection molding machines and two-plate type injection molding machine | |
| CN202431709U (en) | Nut with stress release structure | |
| CN202097217U (en) | Wire outlet eye die holder of wire drawing machine | |
| CN102619855A (en) | Tapping back-off locking nut | |
| CN201439790U (en) | Screw bolt for fixing transmission shaft and automobile body of automobile | |
| CN211648729U (en) | Novel fastener | |
| CN203805243U (en) | Rear mould insertassembly of mould | |
| CN2802164Y (en) | Cold-forging die strong beam formed connecting screw | |
| CN203548500U (en) | Toothed bolt preventing thread stripping | |
| CN207906264U (en) | A kind of Anti-loose locking nut of wind driven generation set main shaft bearing | |
| CN201679825U (en) | Dowel screw | |
| CN102996596B (en) | A kind of composite bolt | |
| CN202510522U (en) | Self-tapping backoff locknut | |
| CN201679820U (en) | Double-headed screw | |
| CN203035705U (en) | Elastic pull-rod nut of injection molding machine | |
| CN102954087A (en) | Elastic pull-rod nut of injection molding machine | |
| CN204222057U (en) | Plastic Rolling Molds | |
| CN202479370U (en) | Automotive mould dismounting structure | |
| CN103615459A (en) | Spline connecting rod nut used for engine | |
| CN201714784U (en) | Decagonal plum-blossom screw bolt device | |
| CN104564794A (en) | Locking structure of impeller shaft | |
| CN202914490U (en) | Composite bolt | |
| CN203009520U (en) | Rapid-installation anti-theft bolt of feeder line card |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110921 |