CN201052533Y - Cold punching mould for cap of screw - Google Patents
Cold punching mould for cap of screw Download PDFInfo
- Publication number
- CN201052533Y CN201052533Y CNU2007200365241U CN200720036524U CN201052533Y CN 201052533 Y CN201052533 Y CN 201052533Y CN U2007200365241 U CNU2007200365241 U CN U2007200365241U CN 200720036524 U CN200720036524 U CN 200720036524U CN 201052533 Y CN201052533 Y CN 201052533Y
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- friction
- hole
- working head
- section
- resisting ring
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Abstract
The utility model relates to the field of screw processing appliances, in particular to a die which is arranged on a cold punching machine and is used for processing a cap of screw. The utility model comprises a sheath body of which the inner portion is provided with pores, and a working head which is inserted inside the pore elastically, wherein the working head comprises a section of friction portion, and a shoulder portion which is arranged at one end of the friction portion and the diameter becomes big, the pore comprises a section of thin neck portion of which the pore diameter is less than the outer diameter of the shoulder portion. The sheath body is embedded with a section of friction-resisting ring, wherein the friction-resisting ring is positioned at the side portion of the thin neck portion, and the friction portion slides and has a friction with the friction-resisting ring mutually. The friction-resisting ring and the sheath body adopt the detachable arrangement, thereby the friction-resisting ring and the sheath body are capable of being made by different materials, wherein the friction-resisting ring which bears the friction can be made by the tungsten steel with a relative high rigidity, and the sheath body can be made by the common steel. The producing costs are reduced, and the abrasive resistance of the product is improved, and further the service life is elongated.
Description
Technical field
The utility model relates to screw processing apparatus field, particularly a kind of mould that is used to process screw cap on the cold punching machine that is installed in.
Background technology
The screw cap cold-punching mold is fixedly installed on the drift, in the process of screw, normally earlier the threaded screw blank of car is fixed, and utilizes drift that screw cap is carried out high speed stamping again.Screw cap cold-punching mold of the prior art, generally including inside has the body in hole and is inserted in working head in the hole slidably, working head comprises that friction part and diameter become big shoulder, have the thin neck of sector hole footpath in the hole of body less than the external diameter of shoulder, shown in accompanying drawing 6,7, because the number of times of drift per minute punching press is more than 100 times, the friction part of working head is the high frequency fast moving in thin neck, make and increase manufacturing cost by very quick-wearing of body; In addition, working head can take place radially to rotate when mobile in body, influence the screw crudy, therefore, the stop screw (7) that also has been threaded on the body, cutting has plane, the end of stop screw to be against to prevent on this plane that working head from rotating on the friction part of working head, but this structure is regulated very trouble, and precision is relatively poor.
Summary of the invention
The purpose of this utility model provides a kind of wear-resistant, the screw cap cold-punching mold of long service life.
For achieving the above object, the technical scheme that the utility model adopted is: a kind of screw cap cold-punching mold, comprise that inside has the body in hole and flexibly is inserted in working head in the described hole, described working head comprises one section friction part and is positioned at this friction part one end and diameter becomes big shoulder, described hole has the thin neck of sector hole footpath less than the external diameter of described shoulder, be inlaid with one section antifriction circle on the described body, described antifriction circle is positioned at the sidepiece place of described thin neck, described friction part and the sliding friction mutually of described antifriction circle.
Have the guide protrusions of extending along its axial direction on the hole wall in described hole, have the axially extended stopper slot along this hole on the described shoulder, described guide protrusions to small part is inserted in the described stopper slot.
The cross section of described antifriction circle is frustroconical, and this antifriction circle is positioned at the external diameter of end one side of described body greater than the external diameter of an other side.
The other end of described body is set with fixed block, described fixed block to small part is inserted in the described hole, be provided with stage clip between described fixed block and the described working head, one end of described stage clip is against on the described fixed block, and the other end of described stage clip is against on the described shoulder.
When carrying out punching press, working head stretches out the external fixedly connected tangible mould in an end of cover, offer the shape groove of given shape on the shape mould according to process requirements, after screw blank to be punched fixes, drift moves, drive the shape mould and carry out punching press, screw cap is pressed into and the corresponding shape of shape groove.
The utility model compared with prior art has following advantage: because antifriction circle and body adopt split type setting, make both to adopt different materials to make respectively according to function, the antifriction circle of mainly bearing frictional force can adopt the stronger wolfram steel of rigidity to make, and body can adopt general steel to make, not only reduced manufacturing cost, but also increased the antiwear characteristic of product, increase the service life.
Description of drawings
Accompanying drawing 1 is a work schematic diagram of the present utility model;
Accompanying drawing 2 is along the cutaway view of A-A in the accompanying drawing 1;
Accompanying drawing 3 is the front view of screw blank to be processed;
Accompanying drawing 4 is the front view of the screw after processing;
Accompanying drawing 5 is the front view of working head of the present utility model;
Accompanying drawing 6 is the cutaway view of body of the present utility model;
Accompanying drawing 7 is the cutaway view of screw cap cold-punching mold of the prior art;
Accompanying drawing 8 is along the cutaway view of B-B in the accompanying drawing 7;
Wherein: 1, body; 11, hole; 12, thin neck; 13, antifriction circle; 15, guide protrusions; 2, working head; 21, friction part; 22, shoulder; 23, stopper slot; 3, shape mould; 31, shape groove; 4, fixed die; 5, screw; 6, elastic component; 61, lead; 62, stage clip; 7, stop screw; 8, frame;
The specific embodiment
Referring to accompanying drawing 1 to shown in the accompanying drawing 6, a kind of screw cap cold-punching mold, comprise that inside has the body 1 in hole 11 and flexibly is inserted in working head 2 in the hole 11, the other end of body 1 is set with fixed block 6, fixed block 6 has the lead 61 that is inserted in the hole 11, be arranged with stage clip 62 outside the lead 61, stage clip 62 flexibly is against between fixed block 6 and the working head 2.When carrying out punching press, described screw cap cold-punching mold is fixedly installed on the drift of cold punching machine, working head 2 stretches out the fixedly connected tangible mould 3 in an end outside the body 1, offer the shape groove 31 of given shape on the shape mould 3 according to process requirements, after screw blank to be punched fixes, drift moves, and drives shape mould 3 and carries out punching press, and screw cap is pressed into and shape groove 31 corresponding shapes.
An end and the big shoulder 22 of diameter change that working head 2 comprises one section friction part 21 and is positioned at this friction part 21, the hole 11 of body 1 also includes the thin neck 12 of sector hole footpath less than the external diameter of shoulder 22, is inlaid with one section antifriction circle 13 on the body 1 at thin neck 12 sidepiece places.During the punching press screw, working head 2 moves back and forth in hole 11, friction part 21 and antifriction circle 13 sliding friction mutually, and this antifriction circle 13 adopts the stronger wolfram steel of rigidity to make usually, can improve the service life of screw cap cold-punching mold exponentially.
Has the guide protrusions 15 of extending on the hole wall in hole 11 along its axial direction, have along this hole 11 axially extended stopper slot 23 on the shoulder 22, guide protrusions 15 to small part is inserted in the stopper slot 23, therefore can prevent that working head 2 from rotating diametrically or rocking, avoid shape mould deflection when punching press, and then improve the qualification rate of screw processing.In addition, for easy for installation, the cross section of antifriction circle 13 is frustroconical, and antifriction circle 13 is positioned at the external diameter of a side external diameter of body 1 end greater than an other side.
Claims (4)
1. screw cap cold-punching mold, comprise that inside has the body of hole (11) (1) and flexibly is inserted in the interior working head (2) in described hole (11), described working head (2) comprises one section friction part (21) and is positioned at these friction part (21) one ends and diameter becomes big shoulder (22), described hole (11) has the thin neck (12) of sector hole footpath less than the external diameter of described shoulder (22), it is characterized in that: be inlaid with one section antifriction circle (13) on the described body (1), described antifriction circle (13) is positioned at the sidepiece place of described thin neck (12), described friction part (21) and described antifriction circle (13) sliding friction mutually.
2. screw cap cold-punching mold according to claim 1, it is characterized in that: have the guide protrusions (15) of extending on the hole wall of described hole (11) along its axial direction, have the axially extended stopper slot (23) of along this hole (11) on the described shoulder (22), described guide protrusions (15) to small part is inserted in the described stopper slot (23).
3. screw cap cold-punching mold according to claim 1 is characterized in that: the cross section of described antifriction circle (13) is frustroconical, and this antifriction circle (13) is positioned at the external diameter of end one side of described body (1) greater than the external diameter of an other side.
4. screw cap cold-punching mold according to claim 3, it is characterized in that: the other end of described body (1) is set with fixed block (6), described fixed block (6) to small part is inserted in the described hole (11), be provided with stage clip (62) between described fixed block (6) and the described working head (2), one end of this stage clip (62) is against on the described fixed block (6), and the other end of this stage clip (62) is against on the described shoulder (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200365241U CN201052533Y (en) | 2007-03-29 | 2007-03-29 | Cold punching mould for cap of screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200365241U CN201052533Y (en) | 2007-03-29 | 2007-03-29 | Cold punching mould for cap of screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201052533Y true CN201052533Y (en) | 2008-04-30 |
Family
ID=39392202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200365241U Expired - Fee Related CN201052533Y (en) | 2007-03-29 | 2007-03-29 | Cold punching mould for cap of screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201052533Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410297A (en) * | 2010-09-21 | 2012-04-11 | 瑞士商柏泰有限公司 | Anti-loosening structure of high-strength washer-free countersunk head screw and processing method thereof |
| CN103495665A (en) * | 2013-10-18 | 2014-01-08 | 宁波市鄞州风名工业产品设计有限公司 | Die capable of continuously punching long screws |
| CN106040841A (en) * | 2016-04-06 | 2016-10-26 | 浙江晋吉汽车配件有限公司 | Combination die for punching and machining lag bolt |
-
2007
- 2007-03-29 CN CNU2007200365241U patent/CN201052533Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410297A (en) * | 2010-09-21 | 2012-04-11 | 瑞士商柏泰有限公司 | Anti-loosening structure of high-strength washer-free countersunk head screw and processing method thereof |
| CN103495665A (en) * | 2013-10-18 | 2014-01-08 | 宁波市鄞州风名工业产品设计有限公司 | Die capable of continuously punching long screws |
| CN103495665B (en) * | 2013-10-18 | 2015-11-18 | 宁波江东唐通机电设备有限公司 | The mould of continuous punching long spiro nail |
| CN106040841A (en) * | 2016-04-06 | 2016-10-26 | 浙江晋吉汽车配件有限公司 | Combination die for punching and machining lag bolt |
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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: 20080430 |