CN102886484A - Ejector device of cold header - Google Patents
Ejector device of cold header Download PDFInfo
- Publication number
- CN102886484A CN102886484A CN 201110202846 CN201110202846A CN102886484A CN 102886484 A CN102886484 A CN 102886484A CN 201110202846 CN201110202846 CN 201110202846 CN 201110202846 A CN201110202846 A CN 201110202846A CN 102886484 A CN102886484 A CN 102886484A
- Authority
- CN
- China
- Prior art keywords
- cylindrical
- lug boss
- cold header
- bar
- material ejecting
- 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.)
- Pending
Links
Images
Landscapes
- Forging (AREA)
Abstract
The invention discloses an ejector device of a cold header. The ejector device comprises a cylindrical ejector rod and a straight rod die, wherein multiple lug bosses are axially arranged on the periphery of the cylindrical ejector rod, the appearance of the ejector rod provided with the lug bosses is matched with a die cavity of the straight rod die, and the ejector device has the advantages that when a bolt with an ultra-long specification is formed at one time, the ejector rod is difficult to rupture, safe, high in efficiency, and low in cost.
Description
Technical field
The present invention relates to the cold headers technical field, relate in particular to a kind of ejection device of cold header.
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 for the manufacture of parts such as bolt, screws.The method of employing cold-heading goes out the head upsetting of bolt, screw, then can as far as possible fewly 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 that upsetting goes out part.In the prior art, mostly adopt a mould two to rush cold headers and add the punch press combination and make the outer-hexagonal bolt, rush the cold headers upsetting with a mould two and go out blank with large oval head (its thickness and the first sample of finished product outer-hexagonal are thick), then it is taken and utilize edger to cut out on the punch press to go again machining screw after the outer-hexagonal head comes.The problem of its existence is: as shown in Figure 1, the straight-bar mould 3 general long 250mm that are of common cold headers, can only upsetting go out 140 mm with interior bolt, when the bolt more than cold-heading 140 mm, bolt 1 length is longer, it is longer that material ejecting rod 2 exposes the outer length of straight-bar mould, when punching press, when the huge impulse force that conducts is added to material ejecting rod, very easily cause the material ejecting rod fracture, cause simultaneously die assembly to damage, cause unnecessary loss, changing material ejecting rod wastes time and energy again, and efficient is low, 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, the invention provides a kind of simple in structure, not easy fracture, safety, efficient is high, cost is low ejection device of cold header of material ejecting rod during the bolt one-shot forming of producing over-long specification.
The present invention adopts following technical scheme: ejection device of cold header, 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 profile of described material ejecting rod with 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 present invention is owing to axially be provided with lug boss in the week of enclosing of cylindrical, top charge bar, matches with the die cavity of straight-bar mould with the profile of the material ejecting rod of lug boss, so that the sectional area of material ejecting rod significantly increases, the maximum pressure that material ejecting rod can bear significantly increases; When punching press, when the huge impulse force that conducts was added to material ejecting rod, material ejecting rod was difficult for causing the material ejecting rod fracture.
The advantage of ejection device of cold header of the present invention is: during the bolt one-shot forming of producing over-long specification material ejecting rod not easy fracture, safety, efficient is high, cost is low.
Description of drawings
Fig. 1 is the prior art schematic diagram.
Fig. 2 is the embodiments of the invention structural representation.
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, material ejecting rod; 3, straight-bar mould; 4, lug boss.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment one:
According to Fig. 2, shown in Figure 3, ejection device of cold header of the present invention, 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 profile of described material ejecting rod with 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, ejection device of cold header of the present invention, 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 profile of described material ejecting rod with 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 ejection device of cold header work of the present invention, to the huge impulse force of material ejecting rod, because the sectional area of material ejecting rod significantly increases, the maximum pressure that material ejecting rod can bear significantly increases during than stay bolt in processing, thereby can not cause the fracture of material ejecting rod, for a long time the processed safely product; Use protective device for material ejecting rod of cold heading machine of the present invention, allow 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 ejection device of cold header of the present invention is chromium 12 molybdenum-vanadium steels.
More than describe embodiments of the present invention in detail, but this example of just lifting for the ease of understanding should not be considered to be limitation of the scope of the invention.Equally, any person of ordinary skill in the field all can according to the description of technical scheme of the present invention and 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 claim of the present invention.
Claims (4)
1. ejection device of cold header, 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 profile of described material ejecting rod ⑵ with lug boss ⑷ matches with the die cavity of straight-bar mould ⑶.
2. ejection device of cold header according to claim 1 is characterized in that: the lug boss ⑷ of the circumference of described cylindrical, top charge bar ⑵ on axially is for semicircle.
3. ejection device of cold header according to claim 1 and 2, it is characterized in that: described lug boss ⑷ has 4, and it evenly distributes on the circumference of cylindrical, top charge bar ⑵.
4. ejection device of cold header according to claim 1 and 2, it 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 |
|---|---|---|---|
| CN 201110202846 CN102886484A (en) | 2011-07-20 | 2011-07-20 | Ejector device of cold header |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110202846 CN102886484A (en) | 2011-07-20 | 2011-07-20 | Ejector device of cold header |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102886484A true CN102886484A (en) | 2013-01-23 |
Family
ID=47530275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110202846 Pending CN102886484A (en) | 2011-07-20 | 2011-07-20 | Ejector device of cold header |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102886484A (en) |
-
2011
- 2011-07-20 CN CN 201110202846 patent/CN102886484A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102873239B (en) | Full-closed multi-way integral die-forging forming process for large-size valve bodies | |
| CN103909204A (en) | Special-shaped stud cold heading device and cold heading process thereof | |
| WO2011061444A3 (en) | Method for manufacturing a tubular metal part | |
| CN102240772A (en) | Forming method of single throw crankshaft forgings | |
| CN203390144U (en) | Bolt upsetting mould | |
| CN102441636A (en) | Production process for water tap quick opening valve rod and special mould thereof | |
| CN101927296A (en) | Hexagon bolt head one-time forming mold | |
| CN102240761A (en) | Combined core roller for ring rolling machine | |
| CN204194470U (en) | A kind of hardware processing mold | |
| CN102581206A (en) | Combined die for forming cylindrical head shaft shoulder screw | |
| CN202185554U (en) | Ejection device of cold header | |
| CN102886484A (en) | Ejector device of cold header | |
| CN203304422U (en) | Improved casting wheel mold | |
| CN109482731A (en) | A kind of bar single-point punching press red needle and its processing technology | |
| CN104907482A (en) | Manufacturing method of American system hexagon flange bolt and combined die | |
| CN102886480A (en) | Protector for ejector rod of cold header | |
| CN100571915C (en) | The manufacturing process of large conic roller blank | |
| CN203254240U (en) | Inner grinding machine grinding head | |
| CN202185553U (en) | Protective device for material ejecting rod of cold heading machine | |
| CN202667299U (en) | Device for processing straight grain pattern of bolt | |
| CN207238910U (en) | A kind of outer-hexagonal nut molding die | |
| CN105290290A (en) | Manufacturing die and manufacturing method for output shaft | |
| CN205289613U (en) | Height combination bed die that shears with interchangeable function | |
| CN202606625U (en) | Die for inner and outer chamfers for pan head torx self-tapping locking screw | |
| CN204449364U (en) | A kind of split type lathe tool of fast changeable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130123 |