CN202185554U - Ejection device of cold header - Google Patents
Ejection device of cold header Download PDFInfo
- Publication number
- CN202185554U CN202185554U CN2011202561888U CN201120256188U CN202185554U CN 202185554 U CN202185554 U CN 202185554U CN 2011202561888 U CN2011202561888 U CN 2011202561888U CN 201120256188 U CN201120256188 U CN 201120256188U CN 202185554 U CN202185554 U CN 202185554U
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- CN
- China
- Prior art keywords
- bar
- cylindrical
- lug boss
- cold headers
- top charge
- 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 - Fee Related
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Abstract
The utility model discloses an ejection device of a cold header, comprising a cylindrical ejection bar and a straight rod die, wherein a plurality of bulge parts is axially disposed around the cylindrical ejection bar, and the appearance of the ejection bar with the plurality of bulge parts is matched with the die cavity of the straight rod die. The ejection device of a cold header has the following advantages that: the ejection bar is not easy to break while moulding at one time in the production for a bolt with an overlong specification; the operation is safe; the efficiency is high; and the cost is low.
Description
Technical field
The utility model relates to the cold headers technical field, relates in particular to a kind of cold headers Lifting Device.
Background technology
Cold headers are at room temperature the equipment of the forging and molding of the top overstriking of bar or wire rod, and cold headers are mainly used in parts such as making bolt, screw.Adopt the method for cold-heading that the head of bolt, screw is upset out; Then can fewly as far as possible cut or not cut, and then be directly formed to the shape and size that people want, not only save lot of materials; And increase substantially production efficiency, significantly improve the mechanical strength of the part of upsetting out.In the prior art; Mostly adopt a mould two towards cold headers with add punch press and combine to make the outer-hexagonal bolt;, it is taken utilize edger to cut out on the punch press to go machining screw again after the outer-hexagonal head comes then towards upset out the blank of the big oval head of band (its thickness and finished product outer-hexagonal first appearance thick) of cold headers with a mould two.The problem of its existence is: as shown in Figure 1, and the straight-bar mould 3 general long 250mm that are of common cold headers, 140 mm that can only upset out are with interior bolt; When the bolt more than cold-heading 140 mm, bolt 1 length is long more, and it is long more that liftout rod 2 exposes the outer length of straight-bar mould; When punching press, when the huge impulse force that is conducted is added to the liftout rod, very easily cause the fracture of liftout rod; Cause die assembly to damage simultaneously, cause unnecessary loss, changing the liftout rod wastes time and energy again; Efficient is low, and cost is high, has a strong impact on the normal process production of product.
Summary of the invention
It is not enough be to solve prior art, and it is a kind of simple in structure that the utility model provides, not easy fracture, safety, efficient is high, cost is low cold headers Lifting Device of liftout rod during the bolt one-shot forming of producing over-long specification.
The utility model adopts following technical scheme: the cold headers Lifting Device; Comprise cylindrical, top charge bar, straight-bar mould; It is characterized in that: the week of enclosing of described cylindrical, top charge bar axially is provided with some lug bosses, and the described profile that has the liftout rod of lug boss matches with the die cavity of straight-bar mould.
Lug boss on the circumference of described cylindrical, top charge bar is axial is semicircle.
Described lug boss has 4, and it evenly distributes on the circumference of cylindrical, top charge bar.
Described lug boss has 3, and it evenly distributes on the circumference of cylindrical, top charge bar.
The utility model is owing to be provided with lug boss in the week of enclosing of cylindrical, top charge bar on axially, and the profile that has the liftout rod of lug boss matches with the die cavity of straight-bar mould, makes the excellent sectional area of liftout significantly increase, and the maximum pressure that the liftout rod can bear significantly increases; When punching press, when the huge impulse force that is conducted was added to the liftout rod, the liftout rod was difficult for causing the fracture of liftout rod.
The advantage of the utility model cold headers Lifting Device is: during the bolt one-shot forming of producing over-long specification the liftout rod not easy fracture, safety, efficient is high, cost is low.
Description of drawings
Fig. 1 is the prior art sketch map.
Fig. 2 is the example structure sketch map of the utility model.
Fig. 3 is the right view of Fig. 2.
Fig. 4 is another example structure signal right view of Fig. 2.
Sequence number among the figure: 1, screw rod; 2, liftout rod; 3, straight-bar mould; 4, lug boss.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described further.
Embodiment one:
According to Fig. 2, shown in Figure 3; The utility model cold headers Lifting Device; Comprise cylindrical, top charge bar 2, straight-bar mould 3, the week of enclosing of described cylindrical, top charge bar 2 axially is provided with some lug bosses 4, and the described profile that has the liftout rod of lug boss 4 matches with the die cavity of straight-bar mould 3; Described lug boss 4 is semicircle; Described lug boss 4 has 4, and it evenly distributes on the circumference of cylindrical, top charge bar 2.
Embodiment two:
According to Fig. 2, shown in Figure 4; The utility model cold headers Lifting Device; Comprise cylindrical, top charge bar 2, straight-bar mould 3, the week of enclosing of described cylindrical, top charge bar 2 axially is provided with some lug bosses 4, and the described profile that has the liftout rod of lug boss 4 matches with the die cavity of straight-bar mould 3; Described lug boss 4 is semicircle; Described lug boss 4 has 3, and it evenly distributes on the circumference of cylindrical, top charge bar 2.
During the work of the utility model cold headers Lifting Device; To the huge impulse force of liftout rod, because the sectional area of liftout rod significantly increases, the maximum pressure that the liftout rod can bear significantly increases during than stay bolt in processing; Thereby can not cause the fracture of liftout rod, can safe for a long time converted products; Use the utility model cold headers liftout rod protective device, let length be the common cold headers of 250mm straight-bar mould, can normal process go out the longest bolt of 230mm that is.
The material of the utility model cold headers Lifting Device is chromium 12 molybdenum-vanadium steels.
More than specified the embodiment of the utility model, but this instance of just lifting for the ease of understanding should not be considered to be the restriction to the utility model scope.Equally; Any person of ordinary skill in the field all can be according to the technical scheme of the utility model and the description of preferred embodiment thereof; Make various possible being equal to and change or replacement, but all these changes or replacement all should belong to the protection domain of the utility model claim.
Claims (4)
1. cold headers Lifting Device; Comprise cylindrical, top charge bar ⑵, straight-bar mould ⑶; It is characterized in that: the week of enclosing of described cylindrical, top charge bar ⑵ axially is provided with some lug boss ⑷, and the described profile that has the liftout rod ⑵ of lug boss ⑷ matches with the die cavity of straight-bar mould ⑶.
2. cold headers Lifting Device according to claim 1 is characterized in that: the lug boss ⑷ on the circumference of described cylindrical, top charge bar ⑵ is axial is for semicircle.
3. cold headers Lifting Device according to claim 1 and 2 is characterized in that: described lug boss ⑷ has 4, and it evenly distributes on the circumference of cylindrical, top charge bar ⑵.
4. cold headers Lifting Device according to claim 1 and 2 is characterized in that: described lug boss ⑷ has 3, and it evenly distributes on the circumference of cylindrical, top charge bar ⑵.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202561888U CN202185554U (en) | 2011-07-20 | 2011-07-20 | Ejection device of cold header |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202561888U CN202185554U (en) | 2011-07-20 | 2011-07-20 | Ejection device of cold header |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202185554U true CN202185554U (en) | 2012-04-11 |
Family
ID=45917027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202561888U Expired - Fee Related CN202185554U (en) | 2011-07-20 | 2011-07-20 | Ejection device of cold header |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202185554U (en) |
-
2011
- 2011-07-20 CN CN2011202561888U patent/CN202185554U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120411 Termination date: 20130720 |