CN102601294B - Die assembly for forming bottom of spring washer nut - Google Patents
Die assembly for forming bottom of spring washer nut Download PDFInfo
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- CN102601294B CN102601294B CN201210095379.XA CN201210095379A CN102601294B CN 102601294 B CN102601294 B CN 102601294B CN 201210095379 A CN201210095379 A CN 201210095379A CN 102601294 B CN102601294 B CN 102601294B
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Abstract
The invention discloses a die assembly for forming the bottom of a spring washer nut, which belongs to the technical field of manufacture of fasteners. The die assembly comprises a third front punched bar, a fourth front punched bar, a third rear punched bar, a fourth rear punched bar, a third forming die and a fourth forming die. A die orifice of a third forming die core is hexagonal, the hexagonal depth is larger than the thickness of a blank, and a circular hole is arranged at the center of a hexagonal bottom. The fourth forming die is a movable die, and a die core and a die shell of the fourth forming die can be separated. The third rear punched bar is integrally cylindrical, and the head of the third rear punched bar is conical. The fourth rear punched bar is integrally cylindrical, and a projection is arranged at the head of the fourth rear punched bar. Both the third front punched bar and the fourth front punched bar are integrally cylindrical, and projections are arranged at both heads of the third front punched bar and the fourth front punched bar. By the aid of the die assembly for forming the bottom of the spring washer nut, a washer connecting portion at the bottom of the spring washer nut can be formed in a high-efficiency, high-speed and high-quality manner, operation is simple and convenient, and high precision is realized, so that the quality of the spring washer nut and the efficiency of a nut cold-heading method are effectively ensured.
Description
Technical field
The invention belongs to securing member manufacturing technology field, be specifically related to a kind of die assembly of nut moulding.
Background technology
At present the compressor fixed form of air-conditioning is mainly to take hex nut to add damping pad as main, and damping pad is generally rubber.And this hex nut adds the fixed form of damping pad, in long-term use, find to exist many assembling and stable problems of compressor of affecting.Its main cause is, air-conditioning when work outside machine fan in the state of running up, thereby outside when running up, machine also can be shaken thereupon.Under this long-term jitter, hex nut and rubber shock-absorbing pad are easily loosening, cause rubber shock-absorbing pad to come off, and cause maintenance frequent.Also make installation process very inconvenient simultaneously.Therefore, current compressor of air conditioner hex nut and the fixed form of rubber shock-absorbing pad easily cause equipment fault conventionally, thereby maintenance is frequent, reduce the service life of integral air conditioner compressor, and installation effectiveness is low.
Summary of the invention
For above-mentioned the deficiencies in the prior art, cold-heading molding method and a kind of incompatible nut of realizing of set of molds for the moulding of bullet pad nut bottom that the present invention proposes respectively a kind of bullet pad nut, a kind of bullet pad nut are connected with the tight of rubber shock-absorbing pad, guarantee that the production of this nut possesses very high production efficiency and good quality simultaneously.
A kind of bullet pad nut, by nut body and pad connecting portion, formed, wherein nut body is hexagonal shape, pad connecting portion in the form of a ring, be arranged on nut body bottom and exceed nut body base plane, the height of the raised area and the thickness of pad to be connected match, and the internal diameter of pad connecting portion is greater than screwhole diameter, and the external diameter of pad connecting portion and the internal diameter of pad to be connected match.
A cold-heading molding method for bullet pad nut, comprises following steps:
A) blank, shears circular wire rod with cutter and blanking die, forms blank, and blank is sent into shaping mould No. one;
B) mold forming utilizes a pediment stick and a backlash rod to carry out hexagonal configuration upsetting system to blank in a shaping mould, forms a mould blank, then a mould blank is ejected to shaping mould No. one, and clamp is sent a mould blank upset into shaping mould No. two;
C) two mold formings utilize No. two pediment sticks and No. two backlash rods again to carry out hexagonal configuration upsetting system to a mould blank in No. two shaping moulds, form two mould blanks, then two mould blanks are ejected to shaping mould No. two, and clamp is sent two mould blank translations into shaping mould No. three;
D) three mold formings utilize No. three pediment sticks and No. three backlash rods that two mould blank upsettings are made to pad connecting portion blank in No. three shaping moulds, form three mould blanks, then three mould blanks are ejected to shaping mould No. three, and clamp is sent three mould blank translations into shaping mould No. four;
E) four mold formings utilize No. four pediment sticks and No. four backlash rods that three mould blank upsettings are made to pad connecting portion in No. four shaping moulds, form four mould blanks, then four mould blanks are ejected to shaping mould No. four, and clamp is sent four mould blank upsets into shaping mould No. five;
F) five mold formings utilize No. five pediment sticks and No. five backlash rods to make groove in the two ends upsetting of four mould blanks in No. five shaping moulds, form five mould blanks, then five mould blanks are ejected to shaping mould No. five, and clamp is sent five mould blank translations into perforating die;
G) punching utilizes and rushes tool to five mould blank punchings in perforating die, forms punching blank;
H) tapping, carries out tapping processing to the endoporus of punching blank, finally completes the moulding of bullet pad nut.
For a die assembly for bullet pad nut bottom moulding, comprise No. three pediment sticks and No. four pediment sticks, No. three backlash rod and No. four backlash rods, No. three shaping moulds and No. four shaping moulds in above-mentioned steps, mentioned;
Wherein, No. three shaping moulds, comprise No. three shaping mould dies and No. three shaping mould formworks, No. three shaping mould die is fixed in No. three shaping mould formworks, the die orifice of No. three shaping mould dies is hexagonal configuration, the hexagonal degree of depth is greater than sotck thinkness, and the centre bit in hexagonal bottom is equipped with circular hole, and the pad connecting portion external diameter of circular hole size and bullet pad nut matches;
No. four shaping moulds, comprise shaping mould die No. four, No. four shaping mould core rods, No. four shaping mould formworks, No. four shaping mould die is fixed in No. four shaping mould core rods, No. four shaping mould formwork is comprised of formwork under No. four moulding upper mould shells and No. four shaping moulds, No. four shaping mould core rod is arranged on shaping mould formworks inside No. four, under No. four shaping mould core rods and No. four shaping moulds, between formwork, being provided with elastomeric element keeps at a distance formwork under No. four shaping mould core rods and No. four shaping moulds, the die orifice of No. four shaping mould dies is hexagonal configuration, the hexagonal degree of depth is greater than sotck thinkness, centre bit in hexagonal bottom is equipped with circular hole, the pad connecting portion external diameter of circular hole size and bullet pad nut matches,
No. three backlash rod integral body is cylindrical, head is coniform, and it enters mould position diameter and is less than shaping mould bottom circular aperture diameter No. three;
No. four backlash rod integral body is cylindrical, head has projection, and it enters mould position diameter and pad connecting portion internal diameter matches, and height and the pad connecting portion height of projection match;
No. three pediment sticks, No. four pediment stick integral body all cylindrical, head all have projection.
During three mold formings, No. three pediment sticks enter No. three moulding dies and move downward, the appropriate section that promotes two mould blanks enters in the circular hole of No. three moulding die hexagonal bottoms, simultaneously, No. three backlash rods enter No. three moulding die bottom circular aperture and move upward, in two mould blank bottom upsettings, make conical socket, thereby form pad connecting portion blank.
During four mold formings, No. four pediment sticks enter No. four moulding dies and move downward, the pad connecting portion blank that first promotes three mould blanks enters in the circular hole of No. four moulding die hexagonal bottoms, promote again three mould blanks and No. four shaping mould core rods simultaneously to formwork motion under No. four shaping moulds, simultaneously, No. four backlash rods enter No. four moulding die bottom circular aperture and move upward, and in three mould blank bottoms, go out upsetting gasket connecting portion.
Elastomeric element under No. four shaping mould dies and No. four shaping moulds between formwork is preferably eight springs.
The beneficial effect of bullet pad nut of the present invention is: because this bullet pad nut has pad connecting portion, therefore can first a metallic gasket be riveted on this connecting portion, in metallic gasket outside, put the rubber shock-absorbing pad using on compressor of air conditioner again, thereby formed the tight connection between nut and rubber shock-absorbing pad, guarantee that this nut and rubber shock-absorbing pad do not come off within the time of compressor of air conditioner normal service life, not only stablized compressor of air conditioner serviceability, but also can make installation effectiveness multiplication.
The beneficial effect of the cold-heading molding method of bullet pad nut of the present invention is: because the shape of this bullet pad nut is all different with plain nut from structure, therefore can not produce by common nut manufacture method.If produced by turning mode, although can realize production object, turning mode inefficiency, obviously cannot meet Production requirement in the future.And the cold-heading molding method of this bullet pad nut can utilize cold-heading equipment at a high speed, realize bullet pad nut efficient, at a high speed and high-quality production, production efficiency can improve 10 times more than compared with turning mode.
The beneficial effect of the die assembly for the bottom moulding of bullet pad nut of the present invention is: utilize this for the die assembly of bullet pad nut bottom moulding, can be efficiently, at a high speed and the high-quality pad connection shaping to bullet pad nut bottom, both easy and simple to handle, there is again very high precision, thereby effectively guaranteed the quality of bullet pad nut and the efficiency of this nut cold-heading molding method.
Accompanying drawing explanation
Fig. 1 is this bullet pad nut structure figure, and wherein 1 is nut body, and 2 is pad connecting portion, and 3 is screw.
Fig. 2 is each operation schematic diagram of cold-heading molding method of bullet pad nut, and wherein 21 is pad connecting portion blank, and 2 is pad connecting portion.
Fig. 3 is No. three pediment sticks, No. four pediment stick schematic diagrames.
Fig. 4 is No. three backlash rods, No. four backlash rod schematic diagram.
Fig. 5 is No. three shaping mould dies, No. four shaping mould die schematic diagrames.
Fig. 6 is No. three shaping moudle structure schematic diagrames, and wherein 31 is No. three shaping mould dies, and 32 is No. three shaping mould formworks.
Fig. 7 is No. four shaping mould mold insert structure schematic diagrames, and wherein 41 is No. four shaping mould dies, and 42 is No. four shaping mould core rods.
Fig. 8 is No. four shaping moudle structure schematic diagrames, and wherein 41 is No. four shaping mould dies, and 42 is No. four shaping mould core rods, and 43 is No. four moulding upper mould shells, and 44 is formwork under No. four shaping moulds, and 45 is spring.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
As shown in Figure 1, the bullet pad nut of the present embodiment, by nut body 1 and pad connecting portion 2, formed, have screw 3, wherein nut body 1 is hexagonal shape, and pad connecting portion 2 in the form of a ring, be arranged on the bottom of nut body 1 and exceed this base plane, the height of the raised area and the thickness of pad to be connected match, and the internal diameter of pad connecting portion 2 is greater than the diameter of screw 3, and the external diameter of pad connecting portion 2 and the internal diameter of pad to be connected match.
As shown in Figure 2, the cold-heading molding method of the bullet pad nut of the present embodiment, its concrete steps are carried out as follows:
First, carry out blank, with cutter and blanking die, circular wire rod is sheared, form blank, and blank is sent into shaping mould No. one.
Then, carry out a mold forming, in a shaping mould, utilize a pediment stick and a backlash rod to carry out hexagonal configuration upsetting system to blank, form a mould blank, then a mould blank is ejected to shaping mould No. one, clamp is sent a mould blank upset into shaping mould No. two.Now, a mould blank is hexagonal state.
Then, carry out two mold formings, in No. two shaping moulds, utilize No. two pediment sticks and No. two backlash rods again to carry out hexagonal configuration upsetting system to a mould blank, form two mould blanks, then two mould blanks are ejected to shaping mould No. two, clamp is sent two mould blank translations into shaping mould No. three.Now, two mould blanks are more smooth hexagonal state.
Follow again, carry out three mold formings, in No. three shaping moulds, utilize No. three pediment sticks and No. three backlash rods that two mould blank upsettings are made to pad connecting portion blank 21, form three mould blanks, then three mould blanks are ejected to shaping mould No. three, clamp is sent three mould blank translations into shaping mould No. four.Now, the hexagonal of three mould blanks part is partially thin, and pad connecting portion blank inside is more shallow conical socket, and as the basis of next station distortion, the cylindrical of pad connecting portion blank 21 is less than normal, so that next station enters mould.
Follow again, carry out four mold formings, in No. four shaping moulds, utilize No. four pediment sticks and No. four backlash rods that three mould blank upsettings are made to pad connecting portion 2, form four mould blanks, then four mould blanks are ejected to shaping mould No. four, clamp is sent four mould blank upsets into shaping mould No. five.Now, pad connecting portion 2 has been formed on the bottom of four mould blanks.
Follow again, carry out five mold formings, in No. five shaping moulds, utilize No. five pediment sticks and No. five backlash rods to make groove in the two ends upsetting of four mould blanks, form five mould blanks, then five mould blanks are ejected to shaping mould No. five, clamp is sent five mould blank translations into perforating die.Now, five mould blanks form darker groove, are beneficial to the punching of next station
Follow again, carry out punching, in perforating die, utilize and rush tool to five mould blank punchings, form punching blank;
Finally, carry out tapping, the endoporus of punching blank is carried out to tapping processing, finally complete the moulding of bullet pad nut.
The die assembly for the bottom moulding of bullet pad nut of the present embodiment, comprises No. three pediment sticks and No. four pediment sticks, No. three backlash rod and No. four backlash rods, No. three shaping moulds and No. four shaping moulds.
As shown in Figure 3, No. three pediment sticks, No. four pediment stick integral body all cylindrical, head all have projection.
As shown in Figure 4, No. three backlash rod integral body is cylindrical, head is coniform, and it enters mould position diameter and is less than shaping mould bottom circular aperture diameter No. three.No. four backlash rod integral body is cylindrical, head has projection, and it enters mould position diameter and pad connecting portion internal diameter matches, and height and the pad connecting portion height of projection match.The head of No. four backlash rods is major control moulds of pad connecting portion internal diameter and pad connecting portion height.
As shown in Figure 5, Figure 6, No. three shaping mould comprises No. three shaping mould dies 31 and No. three shaping mould formworks 32, No. three shaping mould die 31 is fixed in No. three shaping mould formworks 32, the die orifice of No. three shaping mould dies 31 is hexagonal configuration, the hexagonal degree of depth is greater than sotck thinkness, centre bit in hexagonal bottom is equipped with circular hole, and the pad connecting portion external diameter of circular hole size and bullet pad nut matches, and is used for controlling packing ring outside dimension.
As Fig. 5, Fig. 7, shown in Fig. 8, No. four shaping mould comprises shaping mould die 41 No. four, No. four shaping mould core rods 42, No. four shaping mould formworks, No. four shaping mould die 41 is fixed in No. four shaping mould core rods 42, No. four shaping mould formwork is comprised of formwork 44 under No. four moulding upper mould shells 43 and No. four shaping moulds, No. four shaping mould core rod 42 is arranged on shaping mould formworks inside No. four, under No. four shaping mould core rods 42 and No. four shaping moulds, between formwork 44, being provided with spring 45 keeps at a distance formwork 44 under No. four shaping mould core rods 42 and No. four shaping moulds, spring 45 has 8, the die orifice of No. four shaping mould dies 41 is hexagonal configuration, the hexagonal degree of depth is greater than sotck thinkness, centre bit in hexagonal bottom is equipped with circular hole, the pad connecting portion external diameter of circular hole size and bullet pad nut matches.8 springs 45 also can be realized with other elastomeric elements.
During three mold formings, No. three pediment sticks enter No. three moulding dies 31 and move downward, the appropriate section that promotes two mould blanks enters in the circular hole of No. three moulding die 31 hexagonal bottoms, simultaneously, No. three backlash rods enter No. three moulding die 31 bottom circular aperture and move upward, in two mould blank bottom upsettings, make conical socket, thereby form pad connecting portion blank 21.
During four mold formings, No. four pediment sticks enter No. four moulding dies 41 and move downward, the pad connecting portion blank that first promotes three mould blanks enters in the circular hole of No. four moulding die 41 hexagonal bottoms, promote again three mould blanks and No. four shaping mould core rods 42 simultaneously to formwork 44 motions under No. four shaping moulds, under the reaction force of 8 springs 45, pad connecting portion blank is extruded at the bottom of mould.Meanwhile, No. four backlash rods enter No. four moulding die 41 bottom circular aperture and move upward, and in three mould blank bottom upsettings, make pad connecting portion 2.
Although the present invention with preferred embodiment openly as above, embodiment is not of the present invention for limiting.Without departing from the spirit and scope of the invention, any equivalence of doing changes or retouching, belongs to equally the present invention's protection domain.Therefore should to take the application's the content that claim was defined be standard to protection scope of the present invention.
Claims (2)
1. for a die assembly for bullet pad nut bottom moulding, it is characterized in that: comprise No. three pediment sticks and No. four pediment sticks, No. three backlash rod and No. four backlash rods, No. three shaping moulds and No. four shaping moulds; Wherein,
No. three shaping mould is used for the pad connecting portion blank that bullet pad nut is made in upsetting, comprise No. three shaping mould dies and No. three shaping mould formworks, No. three shaping mould die is fixed in No. three shaping mould formworks, the die orifice of No. three shaping mould dies is hexagonal configuration, the hexagonal degree of depth is greater than sotck thinkness, centre bit in hexagonal bottom is equipped with circular hole, and the pad connecting portion external diameter of circular hole size and bullet pad nut matches;
No. four shaping mould is made the pad connecting portion of bullet pad nut for upsetting, comprise shaping mould die No. four, No. four shaping mould core rods, No. four shaping mould formworks, No. four shaping mould die is fixed in No. four shaping mould core rods, No. four shaping mould formwork is comprised of formwork under No. four moulding upper mould shells and No. four shaping moulds, No. four shaping mould core rod is arranged on shaping mould formworks inside No. four, under No. four shaping mould core rods and No. four shaping moulds, between formwork, being provided with elastomeric element keeps at a distance formwork under No. four shaping mould core rods and No. four shaping moulds, the die orifice of No. four shaping mould dies is hexagonal configuration, the hexagonal degree of depth is greater than sotck thinkness, centre bit in hexagonal bottom is equipped with circular hole, the pad connecting portion external diameter of circular hole size and bullet pad nut matches,
No. three backlash rod is for making conical socket in the inner upsetting of pad connecting portion blank, and its integral body is cylindrical, head is coniform, and it enters mould position diameter and is less than shaping mould bottom circular aperture diameter No. three;
No. four backlash rod integral body is cylindrical, head has projection, and it enters mould position diameter and pad connecting portion internal diameter matches, and height and the pad connecting portion height of projection match;
No. three pediment sticks, No. four pediment stick integral body all cylindrical, head all have projection.
2. the die assembly for the bottom moulding of bullet pad nut according to claim 1, is characterized in that: under described No. four shaping mould core rods and No. four shaping moulds, the elastomeric element of formwork is eight springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210095379.XA CN102601294B (en) | 2012-04-01 | 2012-04-01 | Die assembly for forming bottom of spring washer nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210095379.XA CN102601294B (en) | 2012-04-01 | 2012-04-01 | Die assembly for forming bottom of spring washer nut |
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| CN102601294A CN102601294A (en) | 2012-07-25 |
| CN102601294B true CN102601294B (en) | 2014-11-05 |
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| CN201210095379.XA Active CN102601294B (en) | 2012-04-01 | 2012-04-01 | Die assembly for forming bottom of spring washer nut |
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| CN103611806A (en) * | 2013-11-19 | 2014-03-05 | 梧州恒声电子科技有限公司 | T iron heading floating die |
| CN105728625A (en) * | 2016-03-31 | 2016-07-06 | 柳州市正菱车业配件有限公司 | Multipurpose stroke die shell for producing steel cable clamping piece |
| CN107900291A (en) * | 2017-12-12 | 2018-04-13 | 重庆乐迪机车车辆配件有限公司 | A kind of combination die for brake disc casting |
| CN109513874A (en) * | 2018-12-29 | 2019-03-26 | 苏州工业园区新凯精密五金有限公司 | It is a kind of for manufacturing the cold-heading molding technique and cold heading die group of tetragonal pyramid bottom nut |
| CN111468661B (en) * | 2020-05-18 | 2022-02-08 | 海盐建浩金属股份有限公司 | Nut mould |
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| KR100960889B1 (en) * | 2009-12-22 | 2010-06-04 | (주)보원화스너 | Welding nut manufacturing method and welding nut manufacturing device |
| CN201572872U (en) * | 2009-11-26 | 2010-09-08 | 浙江万金机械有限公司 | Forging and pressing die for molding hexagonal nut |
| CN102335713A (en) * | 2011-07-01 | 2012-02-01 | 厦门恒耀金属有限公司 | Process and special device for integrally forming convex navel nut for riveting by using wire rods |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1109393A (en) * | 1993-12-17 | 1995-10-04 | 新城制作所有限公司 | Apparatus for making self-piercing nuts |
| CN1613572A (en) * | 2003-11-05 | 2005-05-11 | 徐福广 | Extruding shaping method for self-locking nut |
| EP1559488A2 (en) * | 2004-01-29 | 2005-08-03 | PROFIL-Verbindungstechnik GmbH & Co. KG | Method for the manufacture of hollow elements and progressive die for carrying out the method. |
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| CN102601294A (en) | 2012-07-25 |
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Effective date of registration: 20151112 Address after: 215500 building 11, 1 the Fuchun River Road, Southeast Economic Development Zone, Suzhou, Jiangsu, Changshou City Patentee after: The Land of Peach Blossoms, Changshu City auto parts and components Manufacturing Co., Ltd Address before: 215500, No. 11, the Fuchun River Road, Changshu Southeast Economic Development Zone, Suzhou, Jiangsu, Changshou City 1, China Patentee before: Changshu New Huayuan Fastener Co., Ltd. |
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Inventor after: Wang Jian Inventor before: Wang Jian Inventor before: Feng Nianqiang |
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Effective date of registration: 20210205 Address after: 215500 No.11 Fuchunjiang Road, Changshu high tech Industrial Development Zone, Suzhou City, Jiangsu Province Patentee after: Changshu Kechuang precision Fastener Co.,Ltd. Address before: 215500 Building 1, No.11 Fuchunjiang Road, Southeast Economic Development Zone, Changshu City, Suzhou City, Jiangsu Province Patentee before: CHANGSHOU TAOYUAN AUTO PARTS MANUFACTURING Co.,Ltd. |