CN216911974U - Long product cold heading mould - Google Patents
Long product cold heading mould Download PDFInfo
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- CN216911974U CN216911974U CN202123122115.2U CN202123122115U CN216911974U CN 216911974 U CN216911974 U CN 216911974U CN 202123122115 U CN202123122115 U CN 202123122115U CN 216911974 U CN216911974 U CN 216911974U
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Abstract
The utility model discloses a long product cold heading die, which comprises a stamping die and a main die, wherein the stamping die is arranged right above the main die, and the long product cold heading die is characterized in that: the stamping die comprises a stamping shell, a stamping rod and a stamping pad; the main die comprises a main die shell, a main die core and a thimble, wherein a mounting hole is formed in the top of the main die shell, the mounting hole comprises an upper hole, a middle hole and a lower hole which are coaxially arranged from top to bottom, the diameter of the upper hole is larger than that of the middle hole, the diameter of the middle hole is larger than that of the lower hole, a product positioning hole is formed in the top of the main die core, the main die core is formed by mutually contacting the main die core at the top, the main die core at the middle part and the main die core at the bottom, the main die core at the top is arranged in the upper hole, the main die core at the middle part is arranged in the hollow cavity, and the main die core at the bottom is arranged in the lower hole. The utility model improves the convenience of installation and disassembly, is convenient to maintain and replace, and simultaneously improves the processing quality of products.
Description
Technical Field
The utility model relates to a die, in particular to a long product cold heading die.
Background
The cold heading process is one of the novel processes for machining less and no cutting metal under pressure. The method is a processing method which utilizes the plastic deformation generated by metal under the action of external force and redistributes and transfers the volume of the metal by means of a die so as to form the required part or blank. The cold heading process is most suitable for producing standard fasteners such as bolts, screws, nuts, rivets, pins and the like, and the cold heading die is one of the most important parts in the cold heading process.
Wherein, when to longer product cold-heading, mold core length is longer, if say that partial damage appears, need maintain completely or change, and the cost is higher. Moreover, the length is long, and the coaxiality of the processing is not good enough. Therefore, the technical problem is solved by the skilled person in the art.
Disclosure of Invention
The utility model aims to provide a long product cold heading die, which improves the convenience of assembly, is convenient to maintain and reduces the cost by using the structure.
In order to achieve the purpose, the utility model adopts the technical scheme that: a cold heading die for long products comprises a punch die and a main die, wherein the punch die is arranged right above the main die,
the punching die comprises a punching shell, a punching rod and a punching pad, a connecting hole is formed in the punching shell, the punching rod and the punching pad are movably arranged in the connecting hole, the connecting hole comprises an upper connecting hole, a middle connecting hole and a lower connecting hole, the diameter of the middle connecting hole is smaller than that of the upper connecting hole and that of the lower connecting hole, a punching sleeve is arranged in the lower connecting hole, an upper shaping hole is formed in the middle of the punching sleeve, and the diameter of the upper shaping hole is connected with that of the middle connecting hole; the punching pad is movably arranged in the upper connecting hole, a screw hole is formed in the middle of the top surface of the punching pad, the upper part of the punching rod is movably inserted into the upper connecting hole, the lower part of the punching rod is inserted into the upper shaping hole through the middle connecting hole, the diameter of the punching rod is equal to that of the middle connecting hole, and the top part of the punching rod is arranged below the punching pad;
the main die comprises a main die shell, a main die core and an ejector pin, wherein the top of the main die shell is provided with an installation hole, the installation hole is coaxially arranged with the connecting hole, the bottom of the main die shell is provided with an ejector pin hole, the ejector pin hole is coaxially arranged with the installation hole, the ejector pin hole is communicated with the installation hole, and the top of the ejector pin is movably inserted into the ejector pin hole;
the mounting holes comprise an upper hole, a middle hole and a lower hole which are coaxially arranged from top to bottom in sequence, the diameter of the upper hole is larger than that of the middle hole, the diameter of the middle hole is larger than that of the lower hole, a product positioning hole is formed in the top of the main mold core, and the product positioning hole and the connecting hole are coaxially arranged;
the main mold core is formed by mutually contacting a top main mold core, a middle main mold core and a bottom main mold core, the outer diameter of the top main mold core is matched with the diameter of the upper hole, the outer diameter of the middle main mold core is matched with the diameter of the middle hole, the outer diameter of the bottom main mold core is matched with the diameter of the lower hole, the top main mold core is arranged in the upper hole, the middle main mold core is arranged in the middle hole, the bottom main mold core is arranged in the lower hole, the middle parts of the top main mold core, the middle main mold core and the bottom main mold core are respectively provided with a through hole, three groups of through holes form the product positioning hole, the bottom surface of the bottom main mold core is provided with a yielding hole which is coaxially arranged corresponding to the through hole, the top of the yielding hole is communicated with the bottom of the through hole, and the bottom of the yielding hole is communicated with the top pin hole, the diameter of the abdicating hole is equal to the diameter of the thimble hole, and the diameter of the abdicating hole is smaller than that of the through hole.
In the technical scheme, the length of the top main mold core is equal to that of the upper hole, the length of the middle main mold core is equal to that of the middle hole, the length of the bottom main mold core is equal to that of the lower hole, the bottom surface of the top main mold core abuts against the bottom surface of the upper hole, the bottom surface of the top main mold core is in contact with the top surface of the middle main mold core, the bottom surface of the middle main mold core abuts against the bottom surface of the middle hole, the bottom surface of the middle main mold core is in contact with the top surface of the bottom main mold core, and the bottom surface of the bottom main mold core abuts against the bottom surface of the lower hole.
In the technical scheme, the outer edge surface of the top of the punching rod is provided with an annular bulge, the annular bulge is movably arranged between the punching pad and the bottom surface of the upper connecting hole, and the diameter of the annular bulge is smaller than that of the upper connecting hole.
In the above technical scheme, the diameter of the upper shaping hole is larger than that of the product positioning hole.
In the technical scheme, the bottom surface of the punching sleeve is flush with the bottom surface of the punching shell, the inner wall below the upper shaping hole is a polygonal hole, and the bottom surface of the polygonal hole is communicated with the bottom surface of the punching sleeve.
In the technical scheme, two groups of top screw holes are symmetrically arranged on the top surface of the top main mold core, the top screw holes are symmetrically arranged on two sides corresponding to the through holes, and the top screw holes are arranged close to the outer edge surface of the top main mold core; two groups of middle screw holes are symmetrically arranged on the top surface of the middle main mold core, the middle screw holes are symmetrically arranged on two sides corresponding to the through holes, and the middle screw holes are arranged close to the outer edge surface of the middle main mold core; the top surface of the bottom main mold core is symmetrically provided with two groups of bottom screw holes, the bottom screw holes are symmetrically arranged on two sides of the corresponding through hole, and the bottom screw holes are close to the outer edge surface of the bottom main mold core.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. the main die core is composed of three groups of main die cores with different outer diameters, so that after part of the main die cores are damaged, the damaged corresponding main die cores are replaced, the maintenance cost can be reduced, the coaxiality of the main die cores is improved, and the cold heading quality is ensured;
2. according to the utility model, the punch pad is adopted to drive the punch rod to move, so that the punch rod can be used for cold heading of a product, and meanwhile, the product can be ejected out of the punch shell, and the stability and quality of the cold heading are ensured.
Drawings
Fig. 1 is a schematic structural diagram in a first embodiment of the present invention.
Wherein: 1. punching a die; 2. performing primary molding; 3. punching a shell; 4. punching a rod; 5. punching a pad; 6. an upper connecting hole; 7. a middle connecting hole; 8. a lower connection hole; 9. punching a sleeve; 10. an upper shaping hole; 11. a screw hole; 12. a main formwork; 13. a main mold core; 14. a thimble; 15. a thimble hole; 16. an upper hole; 17. a mesopore; 18. a lower hole; 19. positioning holes of the product; 20. a top primary mold core; 21. a middle main mold core; 22. a bottom main mold core; 23. a through hole; 24. a hole of abdication; 25. an annular projection; 26. a top screw hole; 27. a middle screw hole; 28. a bottom screw hole; 29. a polygonal hole.
Detailed Description
The utility model is further described below with reference to the following figures and examples:
the first embodiment is as follows: referring to fig. 1, a long product cold heading die comprises a die 1 and a main die 2, the die is arranged right above the main die,
the punching die comprises a punching shell 3, a punching rod 4 and a punching pad 5, wherein a connecting hole is formed in the punching shell, the punching rod and the punching pad are movably arranged in the connecting hole, the connecting hole comprises an upper connecting hole 6, a middle connecting hole 7 and a lower connecting hole 8, the diameter of the middle connecting hole is smaller than that of the upper connecting hole and that of the lower connecting hole, a punching sleeve 9 is arranged in the lower connecting hole, an upper shaping hole 10 is formed in the middle of the punching sleeve, and the diameter of the upper shaping hole is connected with that of the middle connecting hole; the punching pad is movably arranged in the upper connecting hole, a screw hole 11 is formed in the middle of the top surface of the punching pad, the upper part of the punching rod is movably inserted into the upper connecting hole, the lower part of the punching rod is inserted into the upper shaping hole through the middle connecting hole, the diameter of the punching rod is equal to that of the middle connecting hole, and the top part of the punching rod is arranged below the punching pad;
the main die comprises a main die shell 12, a main die core 13 and an ejector pin 14, wherein the top of the main die shell is provided with an installation hole, the installation hole and the connecting hole are coaxially arranged, the bottom of the main die shell is provided with an ejector pin hole 15, the ejector pin hole and the installation hole are coaxially arranged, the ejector pin hole is communicated with the installation hole, and the top of the ejector pin is movably inserted into the ejector pin hole;
the mounting holes comprise an upper hole 16, a middle hole 17 and a lower hole 18 which are coaxially arranged from top to bottom in sequence, the diameter of the upper hole is larger than that of the middle hole, the diameter of the middle hole is larger than that of the lower hole, a product positioning hole 19 is arranged at the top of the main mold core, and the product positioning hole and the connecting holes are coaxially arranged;
the main mold core is formed by mutually contacting a top main mold core 20, a middle main mold core 21 and a bottom main mold core 22, the outer diameter of the top main mold core is matched with the diameter of the upper hole, the outer diameter of the middle main mold core is matched with the diameter of the middle hole, the outer diameter of the bottom main mold core is matched with the diameter of the lower hole, the top main mold core is arranged in the upper hole, the middle main mold core is arranged in the middle hole, the bottom main mold core is arranged in the lower hole, through holes 23 are respectively arranged in the middle parts of the top main mold core, the middle main mold core and the bottom main mold core, the three groups of through holes form the product positioning hole, a yielding hole 24 which is coaxially arranged corresponding to the through holes is arranged on the bottom surface of the bottom main mold core, the top of the yielding hole is communicated with the bottom of the corresponding through hole, and the bottom of the yielding hole is communicated with the top pin hole, the diameter of the abdicating hole is equal to the diameter of the thimble hole, and the diameter of the abdicating hole is smaller than that of the through hole.
In this embodiment, dash the shell and be connected with cold-heading equipment, dash to fill up and be connected with cold-heading equipment through the screw, can drive like this and dash when the shell descends, can also utilize cold-heading equipment to drive and dash to fill up and also descend, drive and dash the stick and also descend and carry out the cold-heading to the product. Wherein, the master die core adopts top master die core, middle part master die core and bottom master die core are constituteed, and the diameter of top is bigger, like this when the installation, insert bottom master die core in the lower hole earlier, insert middle part master die core in the mesopore again, at last reassembling top master die core, convenient assembling is swift, wherein, if a certain part appears wearing and tearing or damage, directly take out change correspond master die core can, the cost is cheaper, and, the master die core adopts the three-section to make, its processing convenience is better, the axiality is also better, and when processing product locating hole, the convenience of its processing is good, the length of cutter can be shorter, the axle center of cutter beats littlely, the precision is higher.
Referring to fig. 1, the length of the top main mold core is equal to that of the upper hole, the length of the middle main mold core is equal to that of the middle hole, the length of the bottom main mold core is equal to that of the lower hole, the bottom surface of the top main mold core abuts against the bottom surface of the upper hole, the bottom surface of the top main mold core contacts with the top surface of the middle main mold core, the bottom surface of the middle main mold core abuts against the bottom surface of the middle hole, the bottom surface of the middle main mold core contacts with the top surface of the bottom main mold core, and the bottom surface of the bottom main mold core abuts against the bottom surface of the lower hole.
Referring to fig. 1, an annular protrusion 25 is disposed on an outer peripheral surface of the top of the punch rod, the annular protrusion is movably disposed between the punch pad and the bottom surface of the upper connection hole, and the diameter of the annular protrusion is smaller than that of the upper connection hole. In this embodiment, the setting of annular bulge, drive towards the stick like this and remove when processing to product cold-heading, prevent to dash the stick and break away from the middle part connecting hole, guarantee the stability towards the stick position.
Wherein the diameter of the upper shaping hole is larger than that of the product positioning hole. This is used to machine the top of the product.
Referring to fig. 1, the bottom surface of the punch sleeve is flush with the bottom surface of the punch shell, the lower inner wall of the upper shaping hole is a polygonal hole 29, and the bottom surface of the polygonal hole is communicated with the bottom surface of the punch sleeve. Polygonal holes, so that during cold heading, the tops of the products form polygonal screw heads. During cold heading, the bottom of a product is inserted into a product positioning hole, then the punching shell and the punching sleeve are abutted against the fixed surface of the main die to move upwards, the top of the product is positioned in an upper shaping hole, then the punching rod is pressed downwards to press the product downwards, the top of the product is shaped in the product positioning hole, the top is extruded by the punching rod, the product is shaped in the polygonal hole, and the top positioning processing of the product is completed.
Referring to fig. 1, two groups of top screw holes 26 are symmetrically arranged on the top surface of the top main mold core, the top screw holes are symmetrically arranged on two sides corresponding to the through holes, and the top screw holes are arranged close to the outer edge surface of the top main mold core; two groups of middle screw holes 27 are symmetrically arranged on the top surface of the middle main mold core, the middle screw holes are symmetrically arranged on two sides corresponding to the through holes, and the middle screw holes are arranged close to the outer edge surface of the middle main mold core; two groups of bottom screw holes 28 are symmetrically arranged on the top surface of the bottom main mold core, the bottom screw holes are symmetrically arranged on two sides corresponding to the through holes, and the bottom screw holes are close to the outer edge surface of the bottom main mold core.
In this embodiment, through the setting that corresponds top screw, middle part screw and bottom screw, when dismantling the master die core like this, directly with the bolt spiro union in the screw that corresponds, it is fixed with the master die shell, then drive the bolt and rise, can pull out the master die core that corresponds, when dismantling like this, just need not to strike out, prevent that the master die core from with the inner wall scratch of mounting hole, guarantee the convenience of dismantling, the maintenance of being convenient for is changed.
Claims (6)
1. The utility model provides a long product cold-heading mould, includes die and master die, the die sets up directly over the master die which characterized in that: the punching die comprises a punching shell, a punching rod and a punching pad, a connecting hole is formed in the punching shell, the punching rod and the punching pad are movably arranged in the connecting hole, the connecting hole comprises an upper connecting hole, a middle connecting hole and a lower connecting hole, the diameter of the middle connecting hole is smaller than that of the upper connecting hole and that of the lower connecting hole, a punching sleeve is arranged in the lower connecting hole, an upper shaping hole is formed in the middle of the punching sleeve, and the diameter of the upper shaping hole is connected with that of the middle connecting hole; the punching pad is movably arranged in the upper connecting hole, a screw hole is formed in the middle of the top surface of the punching pad, the upper part of the punching rod is movably inserted into the upper connecting hole, the lower part of the punching rod is inserted into the upper shaping hole through the middle connecting hole, the diameter of the punching rod is equal to that of the middle connecting hole, and the top part of the punching rod is arranged below the punching pad; the main die comprises a main die shell, a main die core and an ejector pin, wherein the top of the main die shell is provided with an installation hole, the installation hole is coaxially arranged with the connecting hole, the bottom of the main die shell is provided with an ejector pin hole, the ejector pin hole is coaxially arranged with the installation hole, the ejector pin hole is communicated with the installation hole, and the top of the ejector pin is movably inserted into the ejector pin hole; the mounting holes comprise an upper hole, a middle hole and a lower hole which are coaxially arranged from top to bottom in sequence, the diameter of the upper hole is larger than that of the middle hole, the diameter of the middle hole is larger than that of the lower hole, a product positioning hole is formed in the top of the main mold core, and the product positioning hole and the connecting hole are coaxially arranged; the main mold core is formed by mutually contacting a top main mold core, a middle main mold core and a bottom main mold core, the outer diameter of the top main mold core is matched with the diameter of the upper hole, the outer diameter of the middle main mold core is matched with the diameter of the middle hole, the outer diameter of the bottom main mold core is matched with the diameter of the lower hole, the top main mold core is arranged in the upper hole, the middle main mold core is arranged in the middle hole, the bottom main mold core is arranged in the lower hole, the middle parts of the top main mold core, the middle main mold core and the bottom main mold core are respectively provided with a through hole, three groups of through holes form the product positioning hole, the bottom surface of the bottom main mold core is provided with a yielding hole which is coaxially arranged corresponding to the through hole, the top of the yielding hole is communicated with the bottom of the through hole, and the bottom of the yielding hole is communicated with the top pin hole, the diameter of the abdicating hole is equal to the diameter of the thimble hole, and the abdicating hole diameter is smaller than the diameter of the through hole.
2. The long product cold heading die of claim 1, wherein: the length of the top main mold core is equal to the length of the upper hole, the length of the middle main mold core is equal to the length of the middle hole, the length of the bottom main mold core is equal to the length of the lower hole, the bottom surface of the top main mold core abuts against the bottom surface of the upper hole, the bottom surface of the top main mold core is in contact with the top surface of the middle main mold core, the bottom surface of the middle main mold core abuts against the bottom surface of the middle hole, the bottom surface of the middle main mold core is in contact with the top surface of the bottom main mold core, and the bottom surface of the bottom main mold core abuts against the bottom surface of the lower hole.
3. The long product cold heading die of claim 1, wherein: the outer edge face of the top of the punching rod is provided with an annular bulge, the annular bulge is movably arranged between the punching pad and the bottom face of the upper connecting hole, and the diameter of the annular bulge is smaller than that of the upper connecting hole.
4. The long product cold heading die of claim 1, wherein: the diameter of the upper shaping hole is larger than that of the product positioning hole.
5. The long product cold heading die of claim 4, wherein: the bottom surface of the punching sleeve is flush with the bottom surface of the punching shell, the inner wall below the upper shaping hole is a polygonal hole, and the bottom surface of the polygonal hole is communicated with the bottom surface of the punching sleeve.
6. The long product cold heading die of claim 1, wherein: two groups of top screw holes are symmetrically arranged on the top surface of the top main mold core, the top screw holes are symmetrically arranged on two sides corresponding to the through holes, and the top screw holes are arranged close to the outer edge surface of the top main mold core; two groups of middle screw holes are symmetrically arranged on the top surface of the middle main mold core, the middle screw holes are symmetrically arranged on two sides corresponding to the through holes, and the middle screw holes are arranged close to the outer edge surface of the middle main mold core; the top surface of the bottom main mold core is symmetrically provided with two groups of bottom screw holes, the bottom screw holes are symmetrically arranged on two sides of the corresponding through hole, and the bottom screw holes are close to the outer edge surface of the bottom main mold core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123122115.2U CN216911974U (en) | 2021-12-13 | 2021-12-13 | Long product cold heading mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123122115.2U CN216911974U (en) | 2021-12-13 | 2021-12-13 | Long product cold heading mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216911974U true CN216911974U (en) | 2022-07-08 |
Family
ID=82253332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123122115.2U Active CN216911974U (en) | 2021-12-13 | 2021-12-13 | Long product cold heading mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216911974U (en) |
-
2021
- 2021-12-13 CN CN202123122115.2U patent/CN216911974U/en active Active
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