CN107520385B - Hollow rivet radial punching cold heading forming mechanism - Google Patents
Hollow rivet radial punching cold heading forming mechanism Download PDFInfo
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- CN107520385B CN107520385B CN201710622935.7A CN201710622935A CN107520385B CN 107520385 B CN107520385 B CN 107520385B CN 201710622935 A CN201710622935 A CN 201710622935A CN 107520385 B CN107520385 B CN 107520385B
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- ejector rod
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- 238000004080 punching Methods 0.000 title claims abstract description 39
- 239000002699 waste material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
-
- 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
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/58—Making machine elements rivets
- B21K1/60—Making machine elements rivets hollow or semi-hollow rivets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a hollow rivet radial punching cold heading forming mechanism, which comprises a die fixed on a cold heading machine, wherein the die consists of a main die and a stamping die, a stamping die cavity is arranged in the stamping die, a stamping die ejector rod is arranged on the stamping die cavity, a limiting block is arranged on the stamping die ejector rod, and a stamping die spring is arranged between the limiting block and the bottom of the stamping die cavity; the main die comprises a die shell, a die cavity is arranged in the die shell, a push-out ejector rod with a step surface is arranged in the die cavity, a push-out sleeve is sleeved on the push-out ejector rod, a limiting ring is arranged on the push-out sleeve, and a push-out spring is arranged between the limiting ring and the step surface; and a punching top rod is arranged below the mould shell, penetrates through the side wall of the mould cavity and can movably enter and exit the mould cavity. The invention realizes the radial punching of the hollow rivet on the same station of the cold header at one time, greatly reduces the working procedures and improves the efficiency.
Description
Technical Field
The invention relates to a cold heading die, in particular to a hollow rivet radial punching cold heading forming mechanism.
Background
At present, many parts are processed by adopting a cold heading forming mode, the radial punching of the existing hollow rivet cannot be completed on cold heading equipment once, secondary supplement processing is needed, namely, the radial punching is realized by combining a fixture on a drilling machine, so that a large amount of manpower and material resources are wasted, meanwhile, the production efficiency is low, and the product quality cannot be ensured. In addition, because of the hollow characteristic of the hollow rivet, great technical difficulties exist in combining the hollow rivet with a cold header.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provide a hollow rivet radial punching cold heading forming mechanism which can realize that radial punching of the hollow rivet can be completed at one time on the same station of a cold heading machine.
In order to achieve the above purpose, the radial punching cold heading forming mechanism of the hollow rivet comprises a die fixed on a cold heading machine, wherein the die consists of a main die and a stamping die, a stamping die cavity is arranged in the stamping die, a stamping die ejector rod is arranged on the stamping die cavity and reciprocates back and forth in the stamping die cavity, a limiting block is arranged on the stamping die ejector rod, and a stamping die spring is arranged between the limiting block and the bottom of the stamping die cavity;
The main die comprises a die shell, a die cavity is arranged in the die shell, a push-out ejector rod with a step surface is arranged in the die cavity, the push-out ejector rod reciprocates back and forth in the die cavity, a push-out sleeve is sleeved on the push-out ejector rod, a limiting ring is arranged on the push-out sleeve, a push-out spring is arranged between the limiting ring and the step surface, and in addition, the bottom of the push-out ejector rod is also connected with a rear through ejector rod;
The die is characterized in that a punching top rod is arranged below the die shell, penetrates through the side wall of the die cavity and can movably enter and exit the die cavity, an inclined wedge is fixed below the die, an inclined wedge inclined plane is arranged on the inclined wedge, an inclined block is arranged below the die shell, an inclined plane corresponding to the inclined wedge inclined plane is arranged on the inclined block, meanwhile, the punching top rod is fixed on the inclined block, and a reset spring is further arranged between the inclined block and the side wall of the die cavity.
The operation mode of the hollow rivet radial punching cold heading forming is as follows:
When the workpiece is transferred from the previous station to the station, the punch ejector rod feeds the workpiece into the die cavity under the action of the punch spring;
the work piece promotes the release sleeve, under the release spring effect, the release ejector pin retreats, and with the back on the cold header lead to the ejector pin contact, the release ejector pin stops the retreating, and the work piece is stopped after the work piece and release sleeve retreated to the work piece entering die cavity, and the die ejector pin is stopped after advancing to the work piece entering die cavity under the die spring effect simultaneously, and the slide wedge passes through slide wedge inclined plane and inclined plane contact this moment, drives the sloping block upward movement, and then drives the ejector pin upward movement that punches, makes the work piece accomplish radial punching processing.
The stamping die retreats to drive the inclined wedge to retreat, and the inclined block drives the punching top rod to move downwards under the action of the reset spring so as to separate from the workpiece; the rear through ejector rod of the cold header pushes the push-out ejector rod, the push-out ejector rod enters the inner cavity of the workpiece, so that the waste material leaves the workpiece, and in addition, the push-out sleeve is pushed under the action of the push-out spring to push the workpiece out of the die cavity.
The hollow rivet radial punching cold heading forming mechanism provided by the invention realizes that the radial punching of the hollow rivet is finished at one time at the same station of the cold heading machine, thereby greatly reducing the working procedures and improving the efficiency. In particular to the substantial characteristics of the hollow rivet, the push-out sleeve is sleeved on the push rod, so that the hollow rivet is suitable for radial punching of a plurality of hollow connecting pieces.
Drawings
FIG. 1 is a schematic diagram of an open-die structure of a hollow rivet radial punching cold heading forming mechanism of an embodiment;
fig. 2 is a schematic diagram of a die assembly structure of a hollow rivet radial punching cold heading forming mechanism according to an embodiment.
In the figure: the die comprises a workpiece 1, a main die 2, a die 3, a die cavity 4, a die ejector rod 5, a limiting block 6, a die spring 7, a die shell 8, a die cavity 9, a step surface 10, an ejector rod 11, an ejector sleeve 12, a limiting ring 13, an ejector spring 14, a rear ejector rod 15, a punching ejector rod 16, a wedge 17, a wedge inclined surface 18, a wedge block 19, an inclined surface 20 and a reset spring 21.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Examples:
As shown in fig. 1-2, the radial punching cold heading forming mechanism for the hollow rivet provided by the embodiment comprises a die fixed on a cold heading machine, wherein the die consists of a main die 2 and a die 3, a die cavity 4 is arranged in the die 3, a die ejector rod 5 is arranged on the die cavity 4, the die ejector rod 5 reciprocates back and forth in the die cavity 4, a limiting block 6 is arranged on the die ejector rod 5, and a die spring 7 is arranged between the limiting block 6 and the bottom of the die cavity 4;
The main die 2 comprises a die shell 8, a die cavity 9 is arranged in the die shell 8, a push-out ejector rod 11 with a step surface 10 is arranged in the die cavity 9, the push-out ejector rod 11 reciprocates back and forth in the die cavity 9, a push-out sleeve 12 is sleeved on the push-out ejector rod 11, a limiting ring 13 is arranged on the push-out sleeve 12, a push-out spring 14 is arranged between the limiting ring 13 and the step surface 10, and in addition, the bottom of the push-out ejector rod 11 is also connected with a rear through ejector rod 15;
The lower part of the mould shell 8 is provided with a punching top rod 16, the punching top rod 16 penetrates through the side wall of the mould cavity 9 and can movably enter and exit the mould cavity 9, a wedge 17 is fixed below the die 3, a wedge inclined plane 18 is arranged on the wedge 17, the lower part of the mould shell 8 is provided with an inclined block 19, an inclined plane 20 corresponding to the inclined wedge inclined plane 18 is arranged on the inclined block 19, meanwhile, the punching top rod 16 is fixed on the inclined block 19, and a reset spring 21 is further arranged between the inclined block 19 and the side wall of the mould cavity 9.
The operation mode of the hollow rivet radial punching cold heading forming mechanism comprises that the hollow rivet radial punching cold heading forming mechanism is adopted, firstly, when a workpiece 1 is transferred to the station from the last station of the cold heading machine, a die ejector rod 5 on a die 3 sends the workpiece 1 into a die cavity 9 of a main die 2 under the action of a die spring 7;
Secondly, the workpiece 1 pushes the push-out sleeve 12, the push-out ejector rod 11 retreats to a certain distance under the action of the push-out spring 14 and contacts with the rear through ejector rod 15 on the cold header, the push-out ejector rod 11 stops retreating, the workpiece 1 and the push-out sleeve 12 retreats until the workpiece 1 enters the die cavity 9 and then stops, meanwhile, the die ejector rod 5 advances to the workpiece 1 under the action of the die spring 7 and then stops after entering the die cavity 9, at the moment, the wedge 17 contacts with the inclined surface 20 through the inclined surface 18 of the wedge, the inclined block 19 is driven to move upwards, and the punching ejector rod 16 is driven to move upwards, so that the workpiece 1 completes radial punching;
Then, the die 3 retreats to drive the inclined wedge 17 to retreat, the inclined block 19 drives the punching ejector rod 16 to move downwards under the action of the reset spring 21 to separate from the workpiece 1, and finally the rear through ejector rod 15 of the cold header pushes the push-out ejector rod 11 to push out the ejector rod 11 to enter the inner cavity of the workpiece 1, so that the waste material leaves the workpiece 1, and in addition, the push-out sleeve 12 is pushed under the action of the push-out spring 14 to push the workpiece 1 out of the die cavity 9.
Claims (2)
1. The utility model provides a radial cold heading forming mechanism that punches of hollow rivet, includes the mould of fixing on the cold heading machine, the mould comprises master mould (2) and die (3), its characterized in that: a die cavity (4) is arranged in the die (3), a die ejector rod (5) is arranged on the die cavity (4), the die ejector rod (5) reciprocates back and forth in the die cavity (4), a limiting block (6) is arranged on the die ejector rod (5), and a die spring (7) is arranged between the limiting block (6) and the bottom of the die cavity (4);
The main die (2) comprises a die shell (8), a die cavity (9) is arranged in the die shell (8), a push-out ejector rod (11) with a step surface (10) is arranged in the die cavity (9), the push-out ejector rod (11) reciprocates back and forth in the die cavity (9), a push-out sleeve (12) is sleeved on the push-out ejector rod (11), a limiting ring (13) is arranged on the push-out sleeve (12), a push-out spring (14) is arranged between the limiting ring (13) and the step surface (10), and in addition, a rear through ejector rod (15) is connected to the bottom of the push-out ejector rod (11);
the die shell is characterized in that a punching top rod (16) is arranged below the die shell (8), the punching top rod (16) penetrates through the side wall of the die cavity (9) and can move in and out of the die cavity (9), an inclined wedge (17) is fixed below the die (3), an inclined wedge inclined surface (18) is arranged on the inclined wedge (17), an inclined block (19) is arranged below the die shell (8), an inclined surface (20) corresponding to the inclined wedge inclined surface (18) is arranged on the inclined block (19), and meanwhile the punching top rod (16) is fixed on the inclined block (19), and a reset spring (21) is further arranged between the inclined block (19) and the side wall of the die cavity (9).
2. An operation mode of the hollow rivet radial punching cold heading forming mechanism, comprising the hollow rivet radial punching cold heading forming mechanism according to claim 1, which is characterized in that:
Firstly, when a workpiece (1) is transferred to the station from the last station of a cold header, a die ejector rod (5) on a die (3) feeds the workpiece (1) into a die cavity (9) of a main die (2) under the action of a die spring (7);
Secondly, the workpiece (1) pushes the push-out sleeve (12), the push-out ejector rod (11) retreats under the action of the push-out spring (14), the push-out ejector rod (11) contacts with a rear through ejector rod (15) on the cold header after a certain distance, the push-out ejector rod (11) stops retreating, the workpiece (1) and the push-out sleeve (12) retreats until the workpiece (1) enters the die cavity (9) and then stops, meanwhile, the die ejector rod (5) advances under the action of the die spring (7) until the workpiece (1) enters the die cavity (9) and then stops, at the moment, the wedge (17) contacts with the inclined surface (20) through the inclined wedge inclined surface (18), the inclined block (19) is driven to move upwards, and then the punching ejector rod (16) is driven to move upwards, so that the workpiece (1) completes radial punching processing;
Then, the die (3) retreats to drive the inclined wedge (17) to retreat, the inclined block (19) drives the punching ejector rod (16) to move downwards under the action of the reset spring (21) to separate from the workpiece (1), finally the rear through ejector rod (15) of the cold header pushes the push-out ejector rod (11), the push-out ejector rod (11) enters the inner cavity of the workpiece (1) to enable waste materials to leave the workpiece (1), and in addition, the push-out sleeve (12) is pushed under the action of the push-out spring (14) to push the workpiece (1) out of the die cavity (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710622935.7A CN107520385B (en) | 2017-07-27 | 2017-07-27 | Hollow rivet radial punching cold heading forming mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710622935.7A CN107520385B (en) | 2017-07-27 | 2017-07-27 | Hollow rivet radial punching cold heading forming mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN107520385A CN107520385A (en) | 2017-12-29 |
| CN107520385B true CN107520385B (en) | 2024-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710622935.7A Active CN107520385B (en) | 2017-07-27 | 2017-07-27 | Hollow rivet radial punching cold heading forming mechanism |
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| CN (1) | CN107520385B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109304413B (en) * | 2018-10-25 | 2024-12-03 | 思进智能成形装备股份有限公司 | Lower die punch cooling device |
| CN110576141A (en) * | 2019-10-17 | 2019-12-17 | 瑞安市繁盛紧固件股份有限公司 | Cold heading die with lateral punching |
| CN116174641B (en) * | 2023-03-10 | 2024-06-28 | 浙江瑞利动力科技有限公司 | Bolt cold heading device and application method thereof |
| CN118808508B (en) * | 2024-09-18 | 2024-11-26 | 光之星工业科技(江苏)有限公司 | Grounding pin cold heading forming equipment and cold heading process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206912157U (en) * | 2017-07-27 | 2018-01-23 | 宁波思进机械股份有限公司 | Tubular rivet radially punches cold-heading molding mechanism |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57181451U (en) * | 1981-05-08 | 1982-11-17 | ||
| SU1586843A1 (en) * | 1988-06-20 | 1990-08-23 | Уфимский авиационный институт им.Серго Орджоникидзе | Die for group stamping of forgings |
| JPH05169179A (en) * | 1991-12-19 | 1993-07-09 | Honda Motor Co Ltd | Manufacture of valve sleeve |
| JP3546379B2 (en) * | 2001-02-02 | 2004-07-28 | 阪村産業株式会社 | Multistage forging machine |
| JP6054212B2 (en) * | 2013-03-08 | 2016-12-27 | 本田技研工業株式会社 | Mold equipment |
| CN203221173U (en) * | 2013-03-11 | 2013-10-02 | 江苏省泰盛石化管件有限公司 | Linkage separating and combining type thermoplastic precision forging mould |
| CN103447821B (en) * | 2013-08-23 | 2015-07-29 | 浙江振华紧固件有限公司 | Band transverse holes rod member upsetting molding jig |
| JP5884800B2 (en) * | 2013-09-18 | 2016-03-15 | トヨタ自動車株式会社 | Center hole forming method and forging device |
| CN105903884B (en) * | 2016-07-06 | 2017-07-28 | 湖南大学 | A magnetic pulse riveting device with double-side loading for headless rivets |
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2017
- 2017-07-27 CN CN201710622935.7A patent/CN107520385B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206912157U (en) * | 2017-07-27 | 2018-01-23 | 宁波思进机械股份有限公司 | Tubular rivet radially punches cold-heading molding mechanism |
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| CN107520385A (en) | 2017-12-29 |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 315103 Zhejiang city of Ningbo province high tech Zone South Road No. 1832 (the origin of the intelligent forming device of Limited by Share Ltd) Applicant after: SIJIN INTELLIGENT FORMING MACHINERY CO.,LTD. Address before: The national high tech Zone of Ningbo city in Zhejiang Province, 315103 South Road No. 1832 (Ningbo Sijin machinery Limited by Share Ltd) Applicant before: NINGBO SIJIN MACHINERY Co.,Ltd. |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 315103 1832 Jiangnan Road, Ningbo high tech Zone, Zhejiang Applicant after: SIJIN INTELLIGENT FORMING MACHINERY CO.,LTD. Address before: 315103 Jiangnan Road 1832, Ningbo new high tech Zone, Zhejiang (Limited by Share Ltd) Applicant before: SIJIN INTELLIGENT FORMING MACHINERY CO.,LTD. |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 699 Jinghua Road, High tech Zone, Ningbo City, Zhejiang Province, 315103 Applicant after: SIJIN INTELLIGENT FORMING MACHINERY CO.,LTD. Address before: 315103 1832 Jiangnan Road, Ningbo high tech Zone, Zhejiang Applicant before: SIJIN INTELLIGENT FORMING MACHINERY CO.,LTD. |
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