CN202398756U - Cold header - Google Patents
Cold header Download PDFInfo
- Publication number
- CN202398756U CN202398756U CN2011204994751U CN201120499475U CN202398756U CN 202398756 U CN202398756 U CN 202398756U CN 2011204994751 U CN2011204994751 U CN 2011204994751U CN 201120499475 U CN201120499475 U CN 201120499475U CN 202398756 U CN202398756 U CN 202398756U
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- CN
- China
- Prior art keywords
- thimble
- ejection pin
- protective sleeve
- ejection
- push rod
- 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 embodiment of the utility model discloses a cold header which comprises an upper stamp die, a concave die, an ejection pin and a large ejection rod guide sleeve and further comprises an ejection pin protection sleeve; a first end of the ejection pin protection sleeve is fixedly connected with the rear end of the concave die and a second end of the ejection pin protection sleeve is matched with the large ejection rod gudie sleeve in a sliding way; the ejection pin protection sleeve is provided with an ejection pin protection hole matched with the ejection pin; and the large ejection rod guide sleeve is provided with an ejection pin ejection sleeve which are abutted against and is matched with the ejection pin. According to the cold header provided by the utility model, when the ejection pin goes backwards or is ejected out, the side wall of the ejection pin located in the ejection pin protection sleeve is always matched with the hole wall of the ejection pin protection hole of the ejection pin protection sleeve, the ejection pin is not hung in the air, so that the phenomena of deformation or breakage of the ejection pin are not generated, the service life of the ejection pin is prolonged, furthermore, the ejection pin does not need to be maintained and replaced frequently in the production process, the production efficiency is greatly improved, and the production cost of a workpiece is lowered.
Description
Technical field
The utility model relates to the metal forming machinery technical field, more particularly, relates in particular to a kind of cold headers.
Background technology
Cold headers be a kind of be main with pier, be used for producing in batches the special equipment of securing member such as nut bolt specially, as the machine of metal upsetting at normal temperatures processing, generally can production specification M5-M12, the securing members such as bolt of the long 100-450mm of bar.
As shown in Figure 1, Fig. 1 is the structural representation of cold forging machine operational module in the prior art; The workpiece of cold headers of the prior art mainly comprises the big push rod guide pin bushing 06 that upper trimming die 01, the die 02 that cooperates with upper trimming die 01 and die 02 rear end are provided with; Die 02 is provided with groove 03, is provided with thimble 04 in the groove 03, and thimble 04 can slide along the bearing of trend of groove 03, and the rear end of thimble 04 is provided with tailstock barrel 05, and tailstock barrel 05 is slidingly matched with the guide groove 07 of big push rod guide pin bushing 06; Guide groove 07 set inside of big push rod guide pin bushing 06 has big push rod, and the front end of big push rod can offset with the rear end of thimble 04; The production process of cold headers is: the upper trimming die 01 of cold headers cooperates with die 02 when metal forged and pressed, and thimble 04 withdraws from being forged and pressed the through hole that is provided with through the die rear end under the active force of metal backward; After forging and pressing were accomplished, upper trimming die 01 rose, and die 02 descends; The tailstock barrel 05 that the rear end of the front end bump thimble 04 of the big push rod in big push rod fairlead 06 guide groove 07 is provided with; Thereby for thimble 04 power is provided, makes thimble 04 eject forward, just processed workpiece ejects die 02.
But when cold headers production during than the securing member of long size, for example specification is M5-M8, the securing member of the long 200-450mm of bar; Thimble 04 can be retreated, and has only tailstock barrel 05 to cooperate with guide groove 07 because thimble 04 is positioned at the guide groove 07 inner part of big push rod guide pin bushing 06, so in the guide groove 07 of big push rod guide pin bushing 06, hang 200-450mm; When big push rod clashed into the rear end of thimble 04, the front end of thimble 04 withstood on the workpiece that processes, because the diameter of thimble 04 is thinner; And the length of thimble 04 rear overhang is longer, the moment of big push rod bump thimble 04; The axial active force that the two ends of thimble 04 receive is excessive, very easily causes thimble 04 to deform, even often fractures; Can't steady and continuous production thereby cause, production efficiency is low, and production cost is high.
Therefore, how a kind of cold headers being provided, to improve the service life of thimble, enhancing productivity, reduce production costs, is the technical barrier that those skilled in the art need solve.
The utility model content
In view of this, the utility model provides a kind of cold headers, and these cold headers can improve the service life of thimble, enhance productivity, and reduce production costs.
In order to achieve the above object, the utility model embodiment provides following technical scheme:
A kind of cold headers comprise upper trimming die, die, thimble and big push rod guide pin bushing, also comprise the thimble protective sleeve; First end of said thimble protective sleeve is fixedly connected with the rear end of said die, and second end of said thimble protective sleeve is slidingly matched with big push rod guide pin bushing; Said thimble protective sleeve is provided with the thimble protection hole that cooperates with said thimble; Said big push rod guide pin bushing is provided with thimble top cover, and said thimble top cover is conflicted with said thimble and cooperated.
Preferably, said thimble protective sleeve comprises connecting portion and guide part, the rear end fixed-link of said connecting portion and said die, and said guide part stretches in the gathering sill of said big push rod guide pin bushing and is slidingly matched with said big push rod guide pin bushing.
Preferably, said thimble pushes up cover and is arranged at the end of said big push rod guide pin bushing near the connecting portion of said thimble protective sleeve; The guide part of said thimble protective sleeve is provided with chute, and said thimble top cover is provided with the slide block that matches with said chute.
Preferably, the tail end of said thimble is designed to biparting shape structure, and said thimble top cover is provided with biparting shape jacking block with the inconsistent position of afterbody of said thimble, and the said guide part of said thimble protective sleeve is provided with and corresponding pair of fan groove of said thimble afterbody.
On the basis of technique scheme, a kind of cold headers that the utility model provides comprise upper trimming die, die, thimble and big push rod guide pin bushing, also comprise the thimble protective sleeve; First end of said thimble protective sleeve is fixedly connected with the rear end of said die, and second end of said thimble protective sleeve is slidingly matched with big push rod guide pin bushing; Said thimble protective sleeve is provided with the thimble protection hole that cooperates with said thimble; Said big push rod guide pin bushing is provided with thimble top cover, and said thimble top cover is conflicted with said thimble and cooperated.
With respect to the cold headers of mentioning in the background technology; The course of work of the thimble of the cold forging machine that the utility model provides is following: when upper trimming die and die matched moulds; Thimble is retreated along the thimble protection hole of thimble protective sleeve setting, pushes up under the active force that is enclosed within thimble with the inconsistent thimble of the afterbody of thimble and retreats, and retreats thereby drive big push rod guide pin bushing; In the thimble fallback procedures, thimble is arranged in the thimble protection hole of thimble protective sleeve all the time; When thimble need eject, big push rod withstood on the thimble top and puts, and thimble top cover ejects thimble forward, thereby workpiece is ejected.
The cold headers that the utility model provides, thimble is being retreated and is being ejected in the process, and its sidewall that is positioned at the part of thimble protective sleeve protects the hole wall in hole to cooperate with the thimble of thimble protective sleeve all the time; Unsettled situation can not appear, so the phenomenon of being out of shape even fractureing can not appear in thimble; Improved the service life of thimble; And then cold headers need not often keep in repair and change thimble in process of production, have improved production efficiency greatly, have reduced the production cost of workpiece.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of cold forging machine operational module in the prior art;
The structural representation of the cold forging machine operational module that Fig. 2 provides for the utility model;
The side-looking structural representation of thimble protective sleeve in the cold forging machine operational module that Fig. 3 provides for the utility model;
The right TV structure sketch map of thimble protective sleeve in the cold forging machine operational module that Fig. 4 provides for the utility model;
The structural representation of thimble top cover in the cold forging machine operational module that Fig. 5 provides for the utility model;
A kind of structural representation of thimble afterbody in the cold forging machine operational module that Fig. 6 provides for the utility model.
The specific embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
In the argumentation hereinafter, please refer to Fig. 2 to Fig. 6, the structural representation of the cold forging machine operational module that Fig. 2 provides for the utility model; The side-looking structural representation of thimble protective sleeve in the cold forging machine operational module that Fig. 3 provides for the utility model; The right TV structure sketch map of thimble protective sleeve in the cold forging machine operational module that Fig. 4 provides for the utility model; The structural representation of thimble top cover in the cold forging machine operational module that Fig. 5 provides for the utility model; A kind of structural representation of thimble afterbody in the cold forging machine operational module that Fig. 6 provides for the utility model.
The cold headers that the utility model provides comprise upper trimming die 1, die 2, thimble 4 and big push rod guide pin bushing 6, also comprise thimble protective sleeve 8; First end of thimble protective sleeve 8 is fixedly connected with the rear end of die 2, and second end of thimble protective sleeve 8 is slidingly matched with big push rod guide pin bushing 6; Thimble protective sleeve 8 is provided with the thimble protection hole 83 that cooperates with thimble 4; Big push rod guide pin bushing 6 is provided with thimble top cover 5, and thimble top cover 5 is conflicted with thimble 4 and cooperated.
The course of work of the thimble of the cold forging machine that the utility model provides is following: when upper trimming die 1 and die 2 matched moulds; Thimble 4 is positioned at the die cavity 3 inner parts thimble protection hole 83 that thimble protective sleeve 8 is provided with in the pressure lower edge of workpiece of die 2 and retreats; Retreat under the active force of thimble 4 with the thimble top cover 5 that the afterbody of thimble 4 is inconsistent; Retreat thereby drive big push rod guide pin bushing 6, in thimble 4 fallback procedures, thimble 4 is arranged in the thimble protection hole 83 of thimble protective sleeve 8 all the time; When thimble 4 need eject, big push rod withstood on the thimble top cover 5, and thimble top cover 5 ejects thimble 4 forward, thereby workpiece is ejected.
The cold headers that the utility model provides, thimble 4 is being retreated and is being ejected in the process, and its sidewall that is positioned at the part of thimble protective sleeve 8 protects the hole wall in hole 83 to cooperate with the thimble of thimble protective sleeve 8 all the time; Unsettled situation can not appear, so the phenomenon of being out of shape even fractureing can not appear in thimble 4; Improved the service life of thimble 4; And then cold headers need not often keep in repair and change thimble 4 in process of production, have improved production efficiency greatly, have reduced the production cost of workpiece.
Concrete, thimble protective sleeve 8 comprises connecting portion 81 and guide part 82, the rear end fixed-link of connecting portion 81 and die 2, and the gathering sill 7 interior and big push rod guide pin bushings 6 that guide part 82 stretches into big push rod guide pin bushing 6 are slidingly matched.The mode that said structure has adopted the tubular guiding to slide has realized being slidingly matched between guide part 82 and the big push rod guide pin bushing 6, and this fit system stable performance is not prone to phenomenon partially sliding and derailing.
Preferably, thimble top cover 5 is arranged at the end of big push rod guide pin bushing 6 near the connecting portion 81 of thimble protective sleeve 8; The guide part 82 of thimble protective sleeve 8 is provided with chute 85, and thimble top cover 5 is provided with the slide block 52 that matches with chute 85.
Certainly, thimble top cover 5 can also be arranged on the other end of big push rod guide pin bushing 6, and the centre of cover 6 is provided with the thimble protection hole 83 corresponding little push rods and the thimble 4 of thimble protective sleeve 8 and conflicts on the thimble top.
In order further to strengthen the guidance quality of the guide part 82 of thimble protective sleeve 8; The tail end of thimble 4 is designed to biparting shape structure; As shown in Figure 6; Thimble top cover 6 is provided with biparting shape jacking block 51 with the inconsistent position of afterbody of thimble 4, and the guide part 82 of thimble protective sleeve 8 is provided with and corresponding pair of fan groove 84 of thimble 4 afterbodys.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (4)
1. cold headers comprise upper trimming die, die, thimble and big push rod guide pin bushing, it is characterized in that: also comprise the thimble protective sleeve; First end of said thimble protective sleeve is fixedly connected with the rear end of said die, and second end of said thimble protective sleeve is slidingly matched with big push rod guide pin bushing; Said thimble protective sleeve is provided with the thimble protection hole that cooperates with said thimble; Said big push rod guide pin bushing is provided with thimble top cover, and said thimble top cover is conflicted with said thimble and cooperated.
2. cold headers according to claim 1; It is characterized in that: said thimble protective sleeve comprises connecting portion and guide part; The rear end fixed-link of said connecting portion and said die, said guide part stretch in the gathering sill of said big push rod guide pin bushing and are slidingly matched with said big push rod guide pin bushing.
3. cold headers according to claim 2 is characterized in that: said thimble top cover is arranged at the end of said big push rod guide pin bushing near the connecting portion of said thimble protective sleeve; The guide part of said thimble protective sleeve is provided with chute, and said thimble top cover is provided with the slide block that matches with said chute.
4. cold headers according to claim 3; It is characterized in that: the tail end of said thimble is designed to biparting shape structure; Said thimble top cover is provided with biparting shape jacking block with the inconsistent position of afterbody of said thimble, and the said guide part of said thimble protective sleeve is provided with and corresponding pair of fan groove of said thimble afterbody.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204994751U CN202398756U (en) | 2011-12-02 | 2011-12-02 | Cold header |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204994751U CN202398756U (en) | 2011-12-02 | 2011-12-02 | Cold header |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202398756U true CN202398756U (en) | 2012-08-29 |
Family
ID=46696432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204994751U Expired - Fee Related CN202398756U (en) | 2011-12-02 | 2011-12-02 | Cold header |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202398756U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107812873A (en) * | 2017-11-29 | 2018-03-20 | 胡瑾 | A kind of cold headers protect guide pin bushing with thimble |
| CN108311626A (en) * | 2018-01-17 | 2018-07-24 | 嘉兴锦乾亿五金有限公司 | A kind of cold-heading mandril |
-
2011
- 2011-12-02 CN CN2011204994751U patent/CN202398756U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107812873A (en) * | 2017-11-29 | 2018-03-20 | 胡瑾 | A kind of cold headers protect guide pin bushing with thimble |
| CN108311626A (en) * | 2018-01-17 | 2018-07-24 | 嘉兴锦乾亿五金有限公司 | A kind of cold-heading mandril |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI AUTOCRAFT CO., LTD. Free format text: FORMER NAME: AUTOCRAFT INDUSTRIAL(SHANGHAI)LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 201300 Pudong New Area South Road, No. 168 Shanghai Patentee after: SHANGHAI AUTOCRAFT CO., LTD. Address before: 201300 Pudong New Area South Road, No. 168 Shanghai Patentee before: Autocraft Industrial ( Shanghai ) Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20201202 |