CN106623720B - Cold heading die moving-mould-core - Google Patents
Cold heading die moving-mould-core Download PDFInfo
- Publication number
- CN106623720B CN106623720B CN201510722083.XA CN201510722083A CN106623720B CN 106623720 B CN106623720 B CN 106623720B CN 201510722083 A CN201510722083 A CN 201510722083A CN 106623720 B CN106623720 B CN 106623720B
- Authority
- CN
- China
- Prior art keywords
- chamber
- cold
- core
- heading
- thimble
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
- B21J13/14—Ejecting devices
Abstract
Cold heading die moving-mould-core of the present invention, protrusion is equipped on the outside of the end of core, the inside of core, which is run through, is equipped with a dynamic model chamber, dynamic model chamber is divided into cold-heading chamber, thimble chamber and thimble seat chamber from the front end of moving-mould-core to end, cavity wall in core by front end is fixed with insert, cold-heading chamber is located in insert, and thimble seat chamber is formed by cross section and through the rectangle section of cross section, and rectangle section is connected to thimble chamber.The structure of a thimble seat chamber is increased, thimble seat chamber and thimble seat cooperation can be combined into both cold-heading and liftout insert state, not need the ejection that special mandril carries out workpiece.
Description
Technical field
The present invention relates to a kind of mold insert structures of cold upsetting die of car, and in particular to a kind of cold heading die moving-mould-core.
Background technique
Cold-heading is using mold at normal temperature to the forging method of metal bar material upsetting formation.Commonly used to manufacture screw,
The head of bolt, rivet etc..It can reduce or replace machining.Forging stock material can be copper, aluminium, carbon steel, steel alloy, stainless
Steel and titanium alloy etc., stock utilization is up to 80~90%.Cold-heading mostly carries out on dedicated cold headers, is easy to implement continuous, more
Station, automated production.Bar is cut into blank by feeding mechanism automatic feed certain depth, cutting mechanism, then by
Clamp transport mechanism successively send to accumulation swaging and punching station and carries out cold upset forming.The major advantage of cold-heading: cold-heading is processable
At being applicable in lesser load and shorter span.Unusual cross sectional shape can be economically obtained by cold-heading processing, is obtained
Obtain satisfactory strength-weight ratio.The tight type for considering packaging and transport, can produce nestable section.Surrounding gravity effect
Under non-telescope deformation influence.
Currently, spring punch die is widely used in cold-heading processing.There is one to double as in general spring punch die structure
The thimble of heading.But in order to strictly limit the size of the workpiece after cold-heading, the length that general thimble protrudes into die cavity is one
Fixed value, can be by bar cold-heading at workpiece just after thimble is fully inserted into die cavity.After workpiece cold-heading molding, need from mould
It is taken out in chamber, in general, the more regular workpiece of shape can fall off from die cavity automatically under gravity, realize de-
Modulo operation.But for special workpiece in processing, after cold-heading, partial cross section product becomes larger bar, can go out in die cavity
Now the phenomenon that containing material.Along with workpiece self weight is smaller, workpiece cannot be deviate from from die cavity under the effect of gravity.It encounters
It when this workpiece, after cold-heading, needs to exit thimble from spring punch die, be inserted into die cavity with another longer mandril, it will
Workpiece ejection.This mode, it is not only time-consuming and laborious, but also it is repeatedly inserted into mandril every time and thimble all suffers from a repositioning
Problem, once positioning is inaccurate, when insertion, will cause mandril or the deflection of thimble even fractures.Therefore, to the structure of moving-mould-core
Make certain improvement, it will help stripping operation is carried out to workpiece in conjunction with thimble.
Summary of the invention
The purpose of the present invention is to provide a kind of cold heading die moving-mould-cores, cooperate with the thimble in cold-heading molding mechanism, convenient
Workpiece after cold-heading molding is ejected from moving-mould-core.
In order to achieve the above objectives, the technical scheme is that cold heading die moving-mould-core, including cylindrical core, the core
Protrusion is equipped on the outside of the end of body, the inside of the core, which is run through, is equipped with a dynamic model chamber, and the dynamic model chamber is before moving-mould-core
It holds to end and is divided into cold-heading chamber, thimble chamber and thimble seat chamber, lean on the cavity wall of front end to be fixed with insert in the core, institute
It states cold-heading chamber to be located in insert, the thimble seat chamber is formed by cross section and through the rectangle section of cross section, the length
Rectangular section is connected to thimble chamber.
When by adopting the above technical scheme, by improving, thimble seat chamber is offered in core, and thimble seat chamber is by cross
Shape section and through cross section rectangle section form so that thimble seat is inserted into cross section.But if selection one
Fixed direction of insertion, it will so that thimble seat can be only inserted into cross section and can not be inserted into rectangle section, in this way, rectangular
Shape section can form a boss, form a limit to thimble seat, the thimble seat in cold-heading is prevented to be excessively inserting and cause
The thimble of front end is bad by workpiece upsetting.Furthermore by 90 ° of rotation thimble seats, thimble seat can be passed through cross section and be inserted into
In rectangle section, to will be pushed up will increase the depth in thimble insertion dynamic model chamber in the driven die cavity of workpiece after cold-heading molding
Out, the operation of demoulding is realized.Due to having redesigned the structure of core, enable the same thimble as cold-heading and ejection
The effect of workpiece, without the operation replaced between cold-heading and ejection workpiece.It is independent compared to traditional needs setting
Mandril eject workpiece, improved structure is more simple, it is only necessary to be rotated by 90 ° the movement that can realize ejection, no
It needs to re-start thimble and mandril positioning and is inserted into the operation of dynamic model, overcome the inaccurate brought problem of positioning, also mention
The high efficiency of cold-heading and pickup.
Further improvement scheme, the cross section are made of two identical and orthogonal rectangular slots.It should
Setting, cross section and rectangle section can be processed with unified standard, allows two sections of process equipment general, and
The operating procedure of processing is simplified, so that a part of rectangle section has been also included among cross section.
Further improvement scheme, the protrusion are circular ring shape.The protrusion of circular ring shape is convenient for processing, and circumferential setting
Stress is also more reasonable.
Further improvement scheme, the cross section are identical as the length of rectangle section.The setting can convenient for calculate and
Set the depth of thimble seat insertion.
Further improvement scheme, the length of the cold-heading chamber are greater than the length of thimble seat chamber.The setting can give cold-heading chamber
Enough operating spaces are left, and the fully extended core of thimble when ejecting workpiece can be prevented.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
Fig. 1 is the schematic cross-sectional view of cold heading die moving-mould-core embodiment of the present invention；
Fig. 2 is the right side structural representation of Fig. 1.
Specific embodiment
Appended drawing reference: moving-mould-core 1, protrusion 2, dynamic model chamber 3, cold-heading chamber 31, thimble chamber 32, thimble seat chamber 33.
As depicted in figs. 1 and 2, cold heading die moving-mould-core of the present invention, wherein entire moving-mould-core 1 is in bar shape, in moving-mould-core 1
End on the outside of be formed with the protrusion 2 of a ring shape, raised 2 are put on for the end of moving-mould-core 1 is stuck in dynamic model, are prevented whole
It is extracted in the driven die sleeve of a moving-mould-core 1.And corresponding ferrule structure can be also put on by dynamic model and blocks protrusion 2, so that dynamic
Die sleeve etc. enough drives moving-mould-core 1 to move axially.It is equipped with a dynamic model chamber 3 in addition, running through in the inside of moving-mould-core 1, wherein dynamic model
Chamber 3 is divided into cold-heading chamber 31, thimble chamber 32 and thimble seat chamber 33 from the front end of moving-mould-core 1 to end.Wherein, cold-heading chamber 31 is
Cold-heading molding is carried out wherein for accommodating bar and bar.Thimble chamber 32 is mainly that the thimble of cold-heading molding is located therein,
For carrying out cold-heading extruding to bar.And thimble seat chamber 33 be for accommodating thimble seat, especially can be by thimble seat
Insertion depth is limited, so that the insertion depth of thimble on thimble seat is limited, thus real by the depth for changing thimble insertion
Existing thimble is to the cold-heading of bar or the two states of extrusion workpiece.Specifically, it is circular cavity that thimble chamber 32, which is a section,
Cooperate with cylindrical thimble.
It is emphasized that thimble seat chamber 33 is divided into two sections, and the end for being located proximate to moving-mould-core 1 of first segment, second
The position of section is connected to first segment.Wherein, it is rectangular rectangular slot that second segment, which is cross sectional shape, and the rectangular slot
The shapes and sizes in section are identical as the rectangular cross-section size of thimble seat.First segment is the cross that cross sectional shape is cross
Shape slot, which be made of two orthogonal rectangular slots, wherein in the rectangular slot and first segment of second segment
Rectangular slot connection in cross bath.In addition, being fixed with one at the cavity wall of front end in moving-mould-core 1 determines insert
11, and entire cold-heading chamber 31 is all the hardness for being greater than 1 outer wall of moving-mould-core positioned at the hardness for determining to determine in insert 11 insert 11,
Deformation and abrasion of the bar during cold-heading in cold-heading chamber 31 can be reduced.
When specific operation, bar to be processed is placed on station, a part of bar can be inserted into cold-heading chamber 31.
The thimble of thimble seat front end simultaneously carries out cold-heading to bar, at this time thimble will extruded bar stock so that bar is to the side of cold-heading chamber 31
Portion squeezes, thus by bar cold-heading molding.Particularly, during cold-heading, thimble seat arc can be inserted into thimble seat chamber 33.
It, cannot be followed by after the first segment in the front end insertion thimble seat chamber 33 of thimble seat chamber 33 since thimble seat chamber 33 is divided into two sections
In second segment in continuous insertion thimble seat chamber 33.Second segment is just utilized and is formed by boss to thimble seat in first segment end
The maximum cold-heading position of chamber 33 is limited.Can prevent during cold-heading, thimble excessive insertion and workpiece upsetting is bad.
After cold-heading, thimble seat is retreated, is at least exited entire thimble seat from thimble seat chamber 33, then thimble seat is rotated
After 90 °, it is inserted into moving-mould-core 1.Since thimble seat has rotated 90 °, thimble seat can pass through first segment and enter second
Duan Zhong, it will be inserted into always until being completely inserted into thimble seat chamber 33.The length that thimble protrudes into cold-heading chamber 31 at this time is greater than cold
The length protruded into when upsetting, it will the workpiece of cold-heading molding ejects in cold-heading chamber 31.
By improving, thimble seat chamber 33 is offered in moving-mould-core 1, and thimble seat chamber 33 is by cross section and through ten
The rectangle section of font section forms, so that thimble seat is inserted into cross section.But if select certain insertion side
To, it will so that thimble seat can be only inserted into cross section and can not be inserted into rectangle section, in this way, rectangle section
A boss is formed, a limit is formed to thimble seat, prevents in cold-heading thimble seat to be excessively inserting and leads to the thimble of front end
Workpiece upsetting is bad.Furthermore by 90 ° of rotation thimble seats, thimble seat can be passed through cross section and be inserted into rectangle section,
To which the depth in thimble insertion dynamic model chamber will be will increase, it will eject, realize de- in the driven die cavity of workpiece after cold-heading molding
The operation of mould.Due to having redesigned the structure of moving-mould-core 1, enabling the same thimble as cold-heading and having ejected the work of workpiece
With without the operation replaced between cold-heading and ejection workpiece.Individual mandril is arranged compared to traditional needs to come
Workpiece is ejected, improved structure is more simple, it is only necessary to be rotated by 90 ° the movement that can realize ejection, not need to top
Needle and mandril re-start positioning and the operation for being inserted into dynamic model, overcome the inaccurate brought problem of positioning, also improve cold-heading
With the efficiency of pickup.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those skilled in the art,
Without departing from the inventive concept of the premise, several modifications and improvements can also be made, these also should be considered as guarantor of the invention
Range is protected, these all will not influence the effect and patent practicability that the present invention is implemented.
Claims (5)
1. the end outside of cold heading die moving-mould-core, including cylindrical core, the core is equipped with protrusion, the inside of the core is passed through
It is equipped with a dynamic model chamber, the dynamic model chamber is divided into cold-heading chamber, thimble chamber and thimble seat from the front end of moving-mould-core to end
Chamber, the cavity wall in the core by front end are fixed with insert, and the cold-heading chamber is located in insert, characterized in that the thimble
Seat chamber is formed by cross section and through the rectangle section of cross section, and the rectangle section is connected to thimble chamber.
2. cold heading die moving-mould-core according to claim 1, characterized in that the cross section is by two identical and phases
Mutually vertical rectangular slot composition.
3. cold heading die moving-mould-core according to claim 1, characterized in that the protrusion is circular ring shape.
4. cold heading die moving-mould-core according to claim 1, characterized in that the length phase of the cross section and rectangle section
Together.
5. cold heading die moving-mould-core according to claim 1, characterized in that the length of the cold-heading chamber is greater than thimble seat chamber
Length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510722083.XA CN106623720B (en) | 2015-10-31 | 2015-10-31 | Cold heading die moving-mould-core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510722083.XA CN106623720B (en) | 2015-10-31 | 2015-10-31 | Cold heading die moving-mould-core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106623720A CN106623720A (en) | 2017-05-10 |
| CN106623720B true CN106623720B (en) | 2019-04-19 |
Family
ID=58831063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510722083.XA Active CN106623720B (en) | 2015-10-31 | 2015-10-31 | Cold heading die moving-mould-core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106623720B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3127626A (en) * | 1960-11-01 | 1964-04-07 | Nat Machinery Co | Punch knock-outs for double-blow header |
| CN200967186Y (en) * | 2006-09-13 | 2007-10-31 | 田军 | Adjustable screwdriver |
| CN203061790U (en) * | 2013-01-28 | 2013-07-17 | 苏州工业园区新凯精密五金有限公司 | Fully-enclosed bevel gear shaft cold heading mould structure |
| CN104043766A (en) * | 2013-03-11 | 2014-09-17 | 大进合紧固件（昆山）有限公司 | Cold heading die for engine bearing cover fastener |
| CN204094035U (en) * | 2014-08-15 | 2015-01-14 | 宾科汽车紧固件（昆山）有限公司 | Spline pin shaft cold-heading device |
| CN104646581A (en) * | 2015-03-10 | 2015-05-27 | 富奥汽车零部件股份有限公司 | Manufacturing method and mold structure of oversized-head pole bolt |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3654673B2 (en) * | 1994-11-15 | 2005-06-02 | 武蔵精密工業株式会社 | Forging equipment |
-
2015
- 2015-10-31 CN CN201510722083.XA patent/CN106623720B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3127626A (en) * | 1960-11-01 | 1964-04-07 | Nat Machinery Co | Punch knock-outs for double-blow header |
| CN200967186Y (en) * | 2006-09-13 | 2007-10-31 | 田军 | Adjustable screwdriver |
| CN203061790U (en) * | 2013-01-28 | 2013-07-17 | 苏州工业园区新凯精密五金有限公司 | Fully-enclosed bevel gear shaft cold heading mould structure |
| CN104043766A (en) * | 2013-03-11 | 2014-09-17 | 大进合紧固件（昆山）有限公司 | Cold heading die for engine bearing cover fastener |
| CN204094035U (en) * | 2014-08-15 | 2015-01-14 | 宾科汽车紧固件（昆山）有限公司 | Spline pin shaft cold-heading device |
| CN104646581A (en) * | 2015-03-10 | 2015-05-27 | 富奥汽车零部件股份有限公司 | Manufacturing method and mold structure of oversized-head pole bolt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106623720A (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2714856C (en) | Point forming processes | |
| CN103691874A (en) | Forming method of thin-wall nut | |
| CN203356523U (en) | Manufacturing device for flange nut through cold heading | |
| CN105750475A (en) | Plastic forming method of semi-hollow shaft pin | |
| CN106623720B (en) | Cold heading die moving-mould-core | |
| CN102335713B (en) | Process and special device for integrally forming convex navel nut for riveting by using wire rods | |
| CN201711481U (en) | Cold heading die capable of heading parts with rod bosses | |
| CN101383249B (en) | Relay flat iron core machining method and apparatus | |
| CN106623732B (en) | Rotational slide formula forms ejecting mechanism | |
| CN208495685U (en) | Oil pipe bolt Combined mold for processing | |
| JP6650093B2 (en) | Squid needle manufacturing method | |
| CN207839972U (en) | Brake callipers guide pin cold-heading module | |
| EP3456429B1 (en) | Forging method and forging apparatus | |
| CN105598330A (en) | Plastic molding method of eccentric hexagonal shaft pin | |
| JP5090721B2 (en) | Drawing method for deformed metal materials | |
| CN205341770U (en) | Parallel double -end cold -heading device | |
| CN203170842U (en) | Slug shaping mold | |
| KR101121545B1 (en) | Mmanufacturing Apparatus of 'ㄱ' type Decorative Bolt using Indentation Forging | |
| CN205200432U (en) | Cold heading die movable mould piece | |
| CN205324594U (en) | Horizontal double -end cold -heading device | |
| CN102601240A (en) | Dowel screw forming die | |
| CN108723274A (en) | Oil pipe bolt Combined mold for processing | |
| CN202667418U (en) | Blank forming die of titanium alloy half-thread bolt | |
| CN205324593U (en) | Horizontal double -end cold -heading slip thimble | |
| CN100446889C (en) | Method of processing metal blindgut parts by cold holder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200511 Address after: 402160 No.66, Fenghuang 2nd Street, Yongchuan District, Chongqing (in Fenghuang Lake Industrial Park, Yongchuan Industrial Park, Chongqing) Patentee after: Chongqing Jifei Intelligent Equipment Technology Co.,Ltd. Address before: 402160 Phoenix Lake Industrial Park, Yongchuan Industrial Park, Chongqing Patentee before: CHONGQING DINGHAN MACHINERY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230724 Granted publication date: 20190419 |
|
| PP01 | Preservation of patent right |