CN210996279U - Novel forging die ejector rod structure - Google Patents
Novel forging die ejector rod structure Download PDFInfo
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- CN210996279U CN210996279U CN201921567962.XU CN201921567962U CN210996279U CN 210996279 U CN210996279 U CN 210996279U CN 201921567962 U CN201921567962 U CN 201921567962U CN 210996279 U CN210996279 U CN 210996279U
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- ejector rod
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- nut
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Abstract
The utility model discloses a novel forging die ejector rod structure, belonging to the technical field of dies and comprising an ejector rod body, a spring, a nut and a split pin; the ejector rod body sequentially comprises a conical contact section A, a guide cylindrical section B, a spring mounting section C and a threaded section D from top to bottom, the conical contact section A is conical, and the diameter of the spring mounting section C is smaller than that of the guide cylindrical section B and is used for mounting a spring; the threaded section D is provided with threads, the nut is sleeved on the threaded section D, and the threaded section D is provided with a through hole for penetrating through the split pin. The conical ejector rod structure is adopted, when the forging forming is carried out, only the conical surface is stressed, the other end is not stressed, the ejector rod is not bent, the contact area is large when the conical ejector rod is ejected, the ejection deformation of the forged piece is not easy to occur, the flat and thin forged piece is formed by finish forging without flash through the ejector rod structure, and the quality and the production efficiency of the forged piece are improved when the shutdown table caused by the failure of the ejector rod is greatly reduced.
Description
Technical Field
The utility model belongs to the technical field of the mould, concretely relates to novel forge mould ejector pin structure.
Background
There are a lot of flat thin gear class forgings on the car, and after no overlap hot die forging precision forming, the forging can inlay in the die, and traditional ejector pin has following two points not enough:
firstly, two ends of the ejector rod are stressed and are easy to bend or break in the forging process, and finally the ejector rod cannot be ejected smoothly or retracted. If the lower ejector rod cannot return smoothly, the accurate positioning from upsetting to pre-forging and from pre-forging to finish forging cannot be realized;
secondly, the contact area of the ejector rod and the forging piece is small: firstly wear the forging top easily, secondly when ejecting the mould die cavity with flat thin forging, the forging is easy to be out of shape, the waste product appears, and produces unsmoothly.
SUMMERY OF THE UTILITY MODEL
In order to solve the defect that the straight ejector pin structure exists among the prior art, the utility model provides a novel forge mould ejector pin structure, this structure designs out the clearance between with ejector pin and ejector pin support, lets the ejector pin no longer both ends atress when having overcome the forging, and this structure is conical with the end face design, has increased area of contact when ejector pin and forging contact.
The utility model discloses a following technical scheme realizes:
a novel forging die ejector rod structure is integrally cylindrical and comprises an ejector rod body 1, a spring 2, a nut 3 and a split pin 4; the ejector rod body 1 sequentially comprises a conical contact section A, a guide cylindrical section B, a spring mounting section C and a threaded section D from top to bottom, wherein the conical contact section A is conical, the conical end surface is a forge piece contact plane, and the periphery of the cone is in contact with a die and is a main stress surface; the guide cylindrical section B is used for guiding the die ejector rod hole when sliding; the diameter of the spring mounting section C is smaller than that of the guide cylindrical section B, and the spring mounting section C is used for mounting the spring 2 and preventing the ejector rod from being bent due to overlong guide surface of the ejector rod in the ejector rod hole of the die; the threaded section D is provided with threads, the nut 3 is sleeved on the threaded section D, the threaded section D is provided with a through hole for penetrating through the split pin 4, and the split pin 4 is used for limiting the position of the nut 3 and preventing the nut 3 from loosening and moving downwards to fall off.
Furthermore, an internal thread 5 is arranged in one circle inside the nut 3 and is used for being matched and connected with the thread section D, so that the spring 2 is limited, and meanwhile, the force of attack when the spring 2 is compressed is borne.
Compared with the prior art, the utility model has the advantages as follows:
the utility model provides a pair of novel forge mould ejector pin structure takes toper ejector pin structure, this kind of ejector pin structure, when forging and beating the shaping, only the conical surface atress, the other end is not atress, the ejector pin is not bent, area of contact is big when the toper ejector pin is ejecting, is difficult for forging ejecting deformation, this ejector pin structure makes flat thin class forging do not have overlap finish forge to take shape and can realize to greatly reduced because during the shutdown platform that the ejector pin trouble caused, improved forging quality and production efficiency.
Drawings
Fig. 1 is a schematic structural view of a novel forging die ejector rod structure of the present invention;
fig. 2 is an assembly schematic diagram of a novel forging die ejector rod structure of the present invention;
fig. 3 is a schematic view of a new forging mold mandril structure of the present invention;
FIG. 4 is a schematic view of a nut;
in the figure: the device comprises a mandril body 1, a spring 2, a nut 3, a split pin 4, an internal thread 5, a conical contact section A, a guide cylindrical section B, a spring installation section C, a thread section D, a pre-forging lower die 11, a pre-forging upper die 12, a finish-forging lower die 13, a finish-forging upper die 14, a pre-forging lower mandril 15, a pre-forging upper mandril 16, a finish-forging lower mandril 17, a finish-forging upper mandril 18 and a mandril holder 19.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Example 1
A novel forging die ejector rod structure comprises an ejector rod body 1, a spring 2, a nut 3 and a split pin 4; the push rod body 1 is integrally cylindrical and sequentially comprises a conical contact section A, a guide cylindrical section B, a spring mounting section C and a threaded section D from top to bottom, wherein the conical contact section A is conical, the conical end surface is a forging contact plane, and the periphery of the cone is in contact with a die and is a main stress surface; the guide cylindrical section B is used for guiding the die ejector rod hole when sliding; the diameter of the spring mounting section C is smaller than that of the guide cylindrical section B, and the spring mounting section C is used for mounting the spring 2 and preventing the ejector rod from being bent due to overlong guide surface of the ejector rod in the ejector rod hole of the die; the threaded section D is provided with threads, the nut 3 is sleeved on the threaded section D, the threaded section D is provided with a through hole for penetrating through the split pin 4, and the split pin 4 is used for limiting the position of the nut 3 and preventing the nut 3 from loosening and moving downwards to fall off.
Further, the inside round of nut 3 is provided with internal thread 5 for be connected with screw thread section D cooperation, play limiting displacement to spring 2, bear the reaction force when spring 2 compresses simultaneously.
Assembling the push rods (taking the finish forging lower push rod 17 as an example, the other push rods such as the finish forging upper push rod 18, the pre-forging lower push rod 15 and the pre-forging upper push rod 16 adopt the same assembling mode): firstly, a finish forging lower ejector rod 17 (hereinafter referred to as an ejector rod) is arranged in a finish forging lower die 13 (other dies such as a finish forging upper die 14, a pre-forging lower die 11 and a pre-forging lower die 12 are assembled in the same way), and the bottom end of the ejector rod is arranged in the die from the position of a conical ejector rod hole of the finish forging lower die 13; then the spring 2 is arranged on the ejector rod; then, the nut 3 is screwed on the ejector rod to be in contact with the spring, the bottom surface of the nut 3 is higher than a through hole formed in the bottom of the ejector rod, and the spring 2 is pre-compressed by a certain amount (even if the other side of the spring is in contact with the bottom surface of the mold); and then the cotter pin 4 is put into the through hole at the bottom end of the ejector rod and locked. And finally, placing the die on the insert seat. And the conical surface at the top end of the assembled ejector rod is tightly attached to the conical surface of the mold, and the bottom of the ejector rod and the ejector rod support are kept at a certain distance.
The working mechanism of the ejector rod is as follows: in the forging process, the end face of the ejector rod conical contact section A is impacted by metal, the forging force is transmitted to the periphery of the cone of the conical contact section A, after a forge piece is formed, the ejector rod of the device is upwards contacted with the ejector rod through the ejector rod support 19 and then ejected out, so that the forge piece is separated from the die type groove, in the process, the conical surface of the ejector rod is separated from the conical surface of the die ejector rod hole, and the spring 2 is compressed; after the ejection is finished, the equipment is ejected and retreated, the ejector rod is restored to the original position through the extension of the spring 2, and the next ejection stroke is continuously prepared.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (2)
1. A novel forging die ejector rod structure is characterized in that the whole ejector rod structure is cylindrical and comprises an ejector rod body (1), a spring (2), a nut (3) and a split pin (4); the ejector rod body (1) sequentially comprises a conical contact section A, a guide cylindrical section B, a spring mounting section C and a threaded section D from top to bottom, the conical contact section A is conical, the conical end face is a forge piece contact plane, and the periphery of the cone is in contact with a die and is a main stress surface; the guide cylindrical section B is used for guiding the die ejector rod hole when sliding; the diameter of the spring mounting section C is smaller than that of the guide cylindrical section B, and the spring mounting section C is used for mounting a spring (2) and preventing the ejector rod from being bent due to overlong guide surface of the ejector rod in the ejector rod hole of the die; the threaded section D is provided with threads, the nut (3) is sleeved on the threaded section D, a through hole is formed in the threaded section D and used for penetrating through the split pin (4), and the split pin (4) is used for limiting the position of the nut (3) and preventing the nut (3) from loosening and moving downwards to fall off.
2. A novel forging die ejector rod structure as claimed in claim 1, wherein a circle of inner part of the nut (3) is provided with internal threads (5) for being matched and connected with the thread section D, so that the spring (2) is limited, and meanwhile, the internal thread structure bears the attack force when the spring (2) is compressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921567962.XU CN210996279U (en) | 2019-09-20 | 2019-09-20 | Novel forging die ejector rod structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921567962.XU CN210996279U (en) | 2019-09-20 | 2019-09-20 | Novel forging die ejector rod structure |
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| Publication Number | Publication Date |
|---|---|
| CN210996279U true CN210996279U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921567962.XU Active CN210996279U (en) | 2019-09-20 | 2019-09-20 | Novel forging die ejector rod structure |
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| CN (1) | CN210996279U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477867A (en) * | 2021-08-17 | 2021-10-08 | 中国航发沈阳黎明航空发动机有限责任公司 | Forging ejection device for automatic forging of blade |
-
2019
- 2019-09-20 CN CN201921567962.XU patent/CN210996279U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477867A (en) * | 2021-08-17 | 2021-10-08 | 中国航发沈阳黎明航空发动机有限责任公司 | Forging ejection device for automatic forging of blade |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210727 Address after: No.1, xinhongqi street, automobile economic and Technological Development Zone, Changchun, Jilin Province Patentee after: CHINA FIRST AUTOMOBILE WORKS GROUP Co.,Ltd. Patentee after: FAW FOUNDRY Co.,Ltd. Patentee after: FAW forging (Jilin) Co.,Ltd. Address before: No. 8899, Dongfeng Street, Changchun automobile economic and Technological Development Zone, Changchun City, Jilin Province, 130011 Patentee before: CHINA FIRST AUTOMOBILE WORKS GROUP Co.,Ltd. Patentee before: FAW FOUNDRY Co.,Ltd. |