CN108405778B - Waste discharging mechanism and method of cold forging processing die - Google Patents
Waste discharging mechanism and method of cold forging processing die Download PDFInfo
- Publication number
- CN108405778B CN108405778B CN201810421427.7A CN201810421427A CN108405778B CN 108405778 B CN108405778 B CN 108405778B CN 201810421427 A CN201810421427 A CN 201810421427A CN 108405778 B CN108405778 B CN 108405778B
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- die
- ejector pins
- core
- cold forging
- discharging mechanism
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- 238000007599 discharging Methods 0.000 title claims abstract description 35
- 230000007246 mechanism Effects 0.000 title claims abstract description 28
- 239000002699 waste material Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000010273 cold forging Methods 0.000 title claims description 29
- 238000004080 punching Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000009172 bursting Effects 0.000 abstract 1
- 238000009966 trimming Methods 0.000 description 6
- 239000000758 substrate Substances 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
- B21J13/14—Ejecting devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The waste discharging mechanism comprises a plurality of ejector pins (102) and further comprises a first elastic element (107), wherein the ejector pins are arranged around a die core, and the first elastic element is arranged at the rear ends of the ejector pins and used for pushing the ejector pins to move relative to the die core. The method comprises the following steps: in the process of die assembly of the die and the main die, the plurality of ejector pins are compressed and retracted to push the elastic element to compress; when the stamping is completed and the die is opened, the first elastic element stretches to push the front ends of the relative movement of the plurality of ejector pins and the die core to protrude from the front end surface of the die core, so that scraps hung on the periphery of the die core are pushed to fall off from the die core. The invention has more reliable waste removal, can effectively reduce the phenomena of clamping and bursting, prolongs the service life of the die and can improve the production speed.
Description
Technical Field
The invention relates to a die on a horizontal continuous cold forging part machine, in particular to a waste discharging mechanism and a waste discharging method of a cold forging processing die.
Background
After the blank is trimmed and molded by using the cold forging processing die, the cut scrap can be hung on the die core, and because the horizontal continuous cold forging part machine continuously works, if the scrap hung on the die core is not discharged and continuously punched, the scrap can be driven into the die to cause the die to burst. The existing solution is to arrange an air pipe at the die head of the die to blow off the waste material, this solution has the following drawbacks: the operation is unreliable, and the waste material is easy to hang on the material receiving rod on the stamping die, and in the quick continuous motion of the machine, the waste material hung on the material receiving rod is easy to be driven into the die in the process of the next product passing clamping motion, so that the die bursts.
Disclosure of Invention
The invention aims to provide a waste discharging mechanism and a waste discharging method of a cold forging processing die, which aim to solve the defect that the existing air-blowing waste discharging mode is unreliable in work.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a scrap discharge mechanism of a cold forging die for processing a small-sized part including a polygonal base plate, the cold forging die including a main die and a die, the scrap discharge mechanism comprising:
the plurality of ejector pins are arranged around the die core of the die and can slide along the movement direction of the die; and
the first elastic element is arranged at the rear ends of the plurality of ejector pins and used for pushing the plurality of ejector pins to move relative to the die core, and in an extending state, the plurality of ejector pins are pushed to enable the front ends to protrude out of the front end face of the die core.
Preferably, each thimble is composed of a needle seat and a needle body, the needle body is provided with a side plane, the needle body is semi-cylindrical, and the side plane of the needle body is matched with the side face of the die core.
Preferably, the first elastic element and the elastic element for pushing the die receiving rod to reset are the same elastic element.
Preferably, the number of the ejector pins is two, and the two ejector pins are oppositely arranged in the middle of two sides of the die core.
Preferably, the number of the ejector pins is four, and the four ejector pins are arranged on two sides of the die core.
Preferably, the number of the ejector pins is four, and the four ejector pins are arranged on four sides of the die core.
A method of discharging waste from a cold forging die, the method comprising: disposing any one of the above waste discharging mechanisms in a cold forging die; in the process of die assembly of the die and the main die, the plurality of ejector pins are compressed and retracted to push the elastic element to compress; when the stamping is completed and the die is opened, the first elastic element stretches to push the front ends of the relative movement of the plurality of ejector pins and the die core to protrude from the front end surface of the die core, so that scraps hung on the periphery of the die core are pushed to fall off from the die core.
Compared with the prior art, the invention has at least the following beneficial effects:
compared with the traditional air-blowing waste discharging mode, the invention has the advantages that the waste discharging is more reliable, the phenomena of clamping and die explosion can be effectively reduced, and the service life of the die is prolonged. Through experiments, about 5 ten thousand PCS can be subjected to mold clamping or mold explosion by adopting a traditional air-blowing waste discharging mode, and the service life of the mold can be prolonged to more than 20 ten thousand PCS by adopting the invention.
By adopting the waste discharging mechanism, waste on the die core of the die is automatically discharged in the die opening process, so that the production speed can be improved. Through experiments, the production speed of the traditional air-blowing waste discharging mode is 40PCS per minute, and the production speed of the waste discharging mechanism can reach more than 60PCS per minute.
Drawings
FIG. 1 is a block diagram of a small-sized part including a polygonal substrate;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a block diagram of a blank with broken lines showing the trim locations;
FIG. 4 is a cross-sectional view B-B of FIG. 3;
fig. 5 is a schematic structural view of a scrap discharging mechanism of the cold forging die of the first embodiment;
FIG. 6 is a cross-sectional view of C-C of FIG. 5;
FIG. 7 is a schematic view showing a state after the jigs convey the blanks to the mold;
FIG. 8 is a schematic view of the receiving rod after clamping the blank;
FIG. 9 is a schematic view showing a state after the die and the main die are clamped;
FIG. 10 is a schematic view of the state after mold opening;
fig. 11 is a schematic structural view of a scrap discharging mechanism of a cold forging die of the second embodiment;
fig. 12 is a schematic structural view of a scrap discharging mechanism of a cold forging die according to a third embodiment.
Detailed Description
The invention is further described below with reference to the drawings and examples.
A structure of a small-sized part 210 including a polygonal substrate, which is used as an electrode post of a battery, is shown in fig. 1 and 2. The small-sized part 210 includes a polygonal base plate 212 and a stepped cylinder 213, and the base plate 212 has two blind holes 211. It should be noted that the small-sized parts including the polygonal substrate described in the present invention are not limited to the parts shown in fig. 1 and 2, but rather, refer broadly to various small-sized parts having polygonal (including, but not limited to, quadrangular, hexagonal, octagonal, etc.) substrates.
The structure of the blank 200 prior to simultaneous trimming and punching is shown in fig. 3 and 4. For convenience of comparison of the states before and after trimming, the trimming position is shown by a broken line in fig. 3. Wherein two lugs 221 are symmetrically arranged at two opposite edges of the substrate and are used for matching with a clamp, so that the blank 200 is better clamped in the clamp to realize the conveying and accurate positioning of the blank 200.
Fig. 5 and 6 show the structure of the scrap discharging mechanism of the cold forging die of the first embodiment. The cold forging die is used for trimming the blank 200 to form the small-sized part 210 including the polygonal base plate, that is, for machining the small-sized part including the polygonal base plate.
Referring to fig. 5 and 6, the scrap discharging mechanism of the cold forging die of the first embodiment includes: the plurality of pins 102 further comprises a first elastic element 107. The plurality of ejector pins 102 are provided around the die core 103 and are slidable along the movement direction (up-down direction in fig. 6) of the die 100. First elastic elements 107 are provided at the rear ends of the plurality of ejector pins 102 for pushing the plurality of ejector pins 102 and the die core 103 to move relatively, and the plurality of ejector pins 102 are pushed with their front ends protruding from the front end surface of the die core 103 in the extended state of the first elastic elements 107.
Wherein 101 denotes a die receiving bar, 104 denotes a die head, 105 denotes a die shell, and 106 is a positioning column of a first elastic element 107.
Further, each of the ejector pins 102 is composed of a needle holder and a needle body, the needle body has a side plane, the needle body is semi-cylindrical, and the side plane of the needle body is matched with the side surface of the die core 103. Compared with a cylindrical needle body, the needle body in the semi-cylindrical shape has the advantage of small occupied space and has enough contact surface with waste materials.
Further, the plurality of ejector pins 102 and the die receiving rod 101 share the same elastic element, that is, the first elastic element 107 and the elastic element pushing the die receiving rod 101 to return are the same elastic element.
In this first embodiment, the number of the ejector pins is two, and two ejector pins 102 are oppositely disposed at the middle portions of both sides of the die core 103.
The operation thereof is described below with reference to fig. 7 to 10.
First, when the die 100 and the master 300 are in the open state, as shown in fig. 7, the jig conveys the blank 200 between the die 100 and the master 300 and holds the blank in this state, and in this state, the first elastic member 107 is in the extended state, and the front end (lower end in fig. 7) of the ejector pin 102 protrudes from the front end surface of the die core 103. In fig. 7, 301 denotes a main die receiving bar, 302 denotes a main die core, 303 denotes a main die head, 304 denotes a die push plate, and 305 denotes a second elastic element.
Next, the die 100 moves toward the master mold 300, and when the die receiving bar 101 contacts the blank 200, the blank 200 is held in place by the cooperation of the die receiving bar 101 and the master receiving bar 301, as shown in fig. 8, at which time the clamp is disengaged from the blank 200, so that the die 100 continues to move toward the master mold 300 to complete the mold clamping and forging.
The die 100 continues to move into engagement with the master die 300 as shown in fig. 9. In the process, the two receiving bars 101 and 301 are retracted after being pressed, and the die core 103 pushes the blank into the main die core 302 to finish the trimming of the blank, wherein 210 represents the product after trimming, and 220 represents the rim charge cut from the blank. In the process, the plurality of ejector pins 102 are compressed and retracted, so as to push the first elastic element 107 to compress.
After the punching is completed, the die 100 is retracted and opened from the main die 300 as shown in fig. 10. In this process, the die receiving bar 101 is reset by the urging of its reset spring (not shown). At the same time, the main mold core 302 is reset by the second elastic element 305, and the main mold receiving bar 301 is reset by the reset spring (not shown) to release the manufactured small-sized part 210 from the mold core. At the same time, the first elastic element 107 stretches to push the front ends of the relative movement of the plurality of ejector pins 102 and the die core 103 to protrude from the front end surface of the die core 103, so that the scrap 220 hung on the periphery of the die core 103 is pushed to fall off from the die core 103.
Fig. 11 shows a structure of a scrap discharging mechanism of a cold forging die according to a second embodiment. Referring to fig. 11, the cold forging die includes a main die (not shown) and a die 100, wherein a scrap discharging mechanism is provided at the die 100, the scrap discharging mechanism including: the plurality of pins 102 further includes a first elastic element (not shown). The plurality of ejector pins 102 are disposed around the die core 103 and are slidable along the direction of movement of the die 100. The first elastic elements are disposed at the rear ends of the plurality of ejector pins 102 for pushing the plurality of ejector pins 102 and the die core 103 to move relatively, and in the extended state, the plurality of ejector pins 102 are pushed so that the front ends protrude from the front end surface of the die core 103.
Referring to fig. 11 and 5, the second embodiment is different from the first embodiment in the number and positions of the pins. In the first embodiment, there are two ejector pins, whereas in the second embodiment, the number of ejector pins 102 is four, and four ejector pins 102 are provided on both sides of the die core 103.
Fig. 12 shows a structure of a scrap discharging mechanism of a cold forging die according to a third embodiment. Referring to fig. 12, the cold forging die includes a main die (not shown) and a die 100, wherein a scrap discharging mechanism is provided at the die 100, the scrap discharging mechanism including: the plurality of pins 102 further includes a first elastic element (not shown). The plurality of ejector pins 102 are disposed around the die core 103 and are slidable along the direction of movement of the die 100. The first elastic elements are disposed at the rear ends of the plurality of ejector pins 102 for pushing the plurality of ejector pins 102 and the die core 103 to move relatively, and in the extended state, the plurality of ejector pins 102 are pushed so that the front ends protrude from the front end surface of the die core 103.
Referring to fig. 12 and 5, the third embodiment is different from the first embodiment in the number and positions of the pins. In the first embodiment, there are two ejector pins, whereas in the third embodiment, the number of ejector pins 102 is four, and four ejector pins 102 are provided on four sides of the die core 103.
The foregoing detailed description of the invention has been provided by way of example only to assist those skilled in the art in understanding the invention and is not to be construed as limiting the scope of the invention. Various modifications, equivalent changes, etc. which are made by those skilled in the art to the above-described embodiments under the inventive concept should be included in the scope of the present invention.
Claims (6)
1. A waste discharging mechanism of a cold forging die for processing small-sized parts including polygonal base plates, the cold forging die comprising a main die and a die, characterized in that,
the main die comprises a main die receiving rod (301), the stamping die comprises a stamping die receiving rod (101) and a stamping die core (103), the stamping die receiving rod comprises a front end and a rear end, the front end of the stamping die receiving rod is used for being matched with the main die receiving rod to play a role in positioning and clamping a blank,
the waste discharging mechanism comprises:
a plurality of ejector pins (102) which are arranged around the die core (103) and can slide along the movement direction of the die; and
the first elastic element (107) is arranged at the rear ends of the plurality of ejector pins and the rear end of the die receiving rod and used for pushing the plurality of ejector pins, the die receiving rod and the die core to move relatively, and in an extending state, the plurality of ejector pins and the die receiving rod are pushed to enable the front end to protrude from the front end face of the die core, and the protruding length of the ejector pins is smaller than the protruding length of the die receiving rod.
2. The scrap discharging mechanism of a cold forging die according to claim 1, wherein: each thimble (102) is composed of a needle seat and a needle body, the needle body is provided with a side plane, the needle body is semi-cylindrical, and the side plane of the needle body is matched with the side face of the die core.
3. The scrap discharging mechanism of a cold forging die according to claim 1, wherein: the number of the ejector pins is two, and the two ejector pins are oppositely arranged in the middle of two sides of the die core.
4. The scrap discharging mechanism of a cold forging die according to claim 1, wherein: the number of the ejector pins is four, and the four ejector pins are arranged on two sides of the die core of the die.
5. The scrap discharging mechanism of a cold forging die according to claim 1, wherein: the number of the ejector pins is four, and the four ejector pins are arranged on four sides of the die core of the die.
6. A method for discharging waste in a cold forging die, comprising disposing the waste discharging mechanism according to any one of claims 1 to 5 in the cold forging die,
in the process of die assembly of the die (100) and the main die (300), the plurality of ejector pins (102) are retracted under pressure to push the first elastic element (107) to compress;
when the punching is completed and the die is opened, the first elastic element stretches to push the front ends of the relative movement of the plurality of ejector pins and the die core (103) to protrude from the front end surface of the die core, so that waste materials hung on the periphery of the die core are pushed to fall off from the die core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810421427.7A CN108405778B (en) | 2018-05-04 | 2018-05-04 | Waste discharging mechanism and method of cold forging processing die |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810421427.7A CN108405778B (en) | 2018-05-04 | 2018-05-04 | Waste discharging mechanism and method of cold forging processing die |
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| Publication Number | Publication Date |
|---|---|
| CN108405778A CN108405778A (en) | 2018-08-17 |
| CN108405778B true CN108405778B (en) | 2023-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810421427.7A Active CN108405778B (en) | 2018-05-04 | 2018-05-04 | Waste discharging mechanism and method of cold forging processing die |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000079419A (en) * | 1998-09-04 | 2000-03-21 | Noguchi Seisakusho:Kk | Press die and parts for press die |
| CN102357587A (en) * | 2011-09-28 | 2012-02-22 | 无锡晶心精密机械有限公司 | Fine blanking mould of thick plate |
| CN103586393A (en) * | 2013-11-04 | 2014-02-19 | 上海奥达科股份有限公司 | Device used for machining automobile safety belt force limit torsion rod |
| CN103611813A (en) * | 2013-11-27 | 2014-03-05 | 梧州恒声电子科技有限公司 | Copper ring deep drawing and trimming process |
| CN104209443A (en) * | 2014-08-15 | 2014-12-17 | 宾科汽车紧固件（昆山）有限公司 | Spline pin roll cold heading device and production process thereof |
| JP2015123458A (en) * | 2013-12-25 | 2015-07-06 | ダイキン工業株式会社 | Reflare machining device of heat exchanger fin, heat exchanger fin and heat exchanger |
| CN208178349U (en) * | 2018-05-04 | 2018-12-04 | 广东世力科技有限公司 | A kind of waste discharge material mechanism of Cold Forging mold |
-
2018
- 2018-05-04 CN CN201810421427.7A patent/CN108405778B/en active Active
Patent Citations (7)
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|---|---|---|---|---|
| JP2000079419A (en) * | 1998-09-04 | 2000-03-21 | Noguchi Seisakusho:Kk | Press die and parts for press die |
| CN102357587A (en) * | 2011-09-28 | 2012-02-22 | 无锡晶心精密机械有限公司 | Fine blanking mould of thick plate |
| CN103586393A (en) * | 2013-11-04 | 2014-02-19 | 上海奥达科股份有限公司 | Device used for machining automobile safety belt force limit torsion rod |
| CN103611813A (en) * | 2013-11-27 | 2014-03-05 | 梧州恒声电子科技有限公司 | Copper ring deep drawing and trimming process |
| JP2015123458A (en) * | 2013-12-25 | 2015-07-06 | ダイキン工業株式会社 | Reflare machining device of heat exchanger fin, heat exchanger fin and heat exchanger |
| CN104209443A (en) * | 2014-08-15 | 2014-12-17 | 宾科汽车紧固件（昆山）有限公司 | Spline pin roll cold heading device and production process thereof |
| CN208178349U (en) * | 2018-05-04 | 2018-12-04 | 广东世力科技有限公司 | A kind of waste discharge material mechanism of Cold Forging mold |
Non-Patent Citations (1)
| Title |
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| 袁辉 ; 王金霞 ; .复合模中防止工件嵌入废料的弹性卸料装置.模具制造.2006,(第07期),全文. * |
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| CN108405778A (en) | 2018-08-17 |
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Effective date of registration: 20231205 Address after: 200131, Part B, First Floor, Building 16, No. 69 Xiya Road, China (Shanghai) Pilot Free Trade Zone, Pudong New Area, Shanghai Applicant after: Whit Precision Devices (Shanghai) Co.,Ltd. Address before: 523681 No. 22-1 Yinxi Road, Wulian Village, Fenggang Town, Dongguan City, Guangdong Province Applicant before: GUANGDONG SHILI TECHNOLOGY Co.,Ltd. |
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