CN101817029B - Cold extrusion die of hexagon nut - Google Patents

Cold extrusion die of hexagon nut Download PDF

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Publication number
CN101817029B
CN101817029B CN201010141890XA CN201010141890A CN101817029B CN 101817029 B CN101817029 B CN 101817029B CN 201010141890X A CN201010141890X A CN 201010141890XA CN 201010141890 A CN201010141890 A CN 201010141890A CN 101817029 B CN101817029 B CN 101817029B
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CN
China
Prior art keywords
die
plate
punch
hole
die sleeve
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CN201010141890XA
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Chinese (zh)
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CN101817029A (en
Inventor
陆颂荫
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宁波市鄞州剑均机械科技有限公司
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Priority to CN201010141890XA priority Critical patent/CN101817029B/en
Publication of CN101817029A publication Critical patent/CN101817029A/en
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Publication of CN101817029B publication Critical patent/CN101817029B/en

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Abstract

The invention discloses a cold extrusion die of a hexagon nut, which comprises a die handle (1), an upper die plate (2), an upper die padding plate (3), an upper fixed plate (4), a die sleeve (5), a lower fixed plate (6) and a beating bar (9), wherein support plates (10) are fixedly arranged on the left side and the right side of the upper die padding plate (3), and the support plates (10) are movably connected with the die sleeve (5); a stepped hole on the upper fixed plate is arranged in the same axial line with a cavity of the die sleeve and communicated with the cavity, an upper male die on the upper fixed plate is matched in the stepped hole (4.2) and the cavity (5.1) in a sliding manner, a spring (13) is further sheathed on the upper male die (12), one end of the spring (13) is resisted on a step of the upper male die (12), and the other end of the spring (13) is resisted on the step of the stepped hole (4.2); and the beating bar (9) is matched in a through hole I (1.1) on the die handle and a through hole II (3.1) on the upper die padding plate in the sliding manner. The die is easy to release.

Description

The cold extrusion die of hex nut

Technical field

The present invention relates to a kind of cold extrusion die, relate to a kind of half-finished cold extrusion die of hex nut that is used to produce or rather.

Background technology

Hex nut is used very extensive in industry.General process of producing hex nut is divided into: 1, earlier raw material are processed to form the semi-finished product that do not have internal thread; 2, again semi-finished product are carried out internal thread machining and form finished product.At present existing manufacturing technique generally is to carry out founding earlier to be cast as blank, and then the column blank is carried out cut becomes semi-finished product.There is following defective in half-finished mode that this kind produced hex nut: blank is processed into the unnecessary material of will pruning in half-finished process in smear metal; This makes raw-material waste quite big, and cut is consuming time many, influences production efficiency; Thereby the increase production cost reduces economic benefit; Occur defectives such as sand holes, slag inclusion easily when raw material carry out the founding casting in addition, thereby influence product quality.

Comprehensive above-mentioned reason; People consider to produce the hex nut semi-finished product with the mode of extruding, and produce semi-finished product with hot extrusion, and the semi-finished product of producing not only change in size are bigger; And the surface has one deck oxide skin; Therefore can not directly carry out internal thread machining, also need pass through turning processing, production process is still more loaded down with trivial details like this.Therefore, in order to ensure the quality of products, reduce operation, people adopt the cold-stamped mode to produce semi-finished product.And the cold extrusion die of prior art comprises die shank, cope match-plate pattern, upper die plate, upper mounted plate, die sleeve, bottom plate, counterdie backing plate and lower bolster.Described counterdie shim is on described lower bolster; Described bottom plate is fixed on the described counterdie backing plate; Described die sleeve is placed on the described bottom plate, and described upper mounted plate is placed on the described die sleeve, and described upper die plate is fixed on the described upper mounted plate; Described cope match-plate pattern is fixed on the described upper die plate, and described die shank is fixed on the described cope match-plate pattern.The endoporus of described die sleeve is the die cavity of mould.Described bottom plate is provided with lower punch; Described upper mounted plate is provided with punch; The described punch of going up is provided with blind hole; The described punch of going up is slidingly fitted in the described die cavity, and described lower punch passes die cavity and its upper end is positioned at the described blind hole that goes up punch, and is slidingly matched with the described punch of going up.Though the cold extrusion die of this kind structure can be processed the semi-finished product of hex nut, demoulding difficulty just after the moulding, even can't the demoulding, thereby cause inefficiency.

Summary of the invention

The technical problem that the present invention will solve is that a kind of cold extrusion die of hex nut of the easy demoulding is provided.

Technical solution of the present invention is, a kind of cold extrusion die with hex nut of following structure is provided, and it comprises die shank, cope match-plate pattern, upper die plate, upper mounted plate, die sleeve and bottom plate; Described die sleeve is placed on the described bottom plate, and described upper mounted plate is placed on the described die sleeve, and described upper die plate is fixed on the described upper mounted plate; Described cope match-plate pattern is fixed on the described upper die plate; Described die shank is along connecting cope match-plate pattern and being fixed on the described cope match-plate pattern on the cope match-plate pattern thickness direction, described bottom plate is provided with lower punch, and described upper mounted plate is provided with punch; The described punch of going up is provided with blind hole; The upper end of described lower punch is positioned at the described blind hole that goes up punch, and is slidingly matched with the described punch of going up, and the left and right sides of described upper die plate all is fixed with supporting plate; Described left and right sides supporting plate all extends downwardly into the left and right sides of die sleeve, and described supporting plate and described die sleeve flexibly connect; Described upper mounted plate is provided with punch and is meant; The described punch of going up is a stairstepping, described upper mounted plate be provided with described die sleeve corresponding and with the shoulder hole of die cavity coaxial line, described shoulder hole communicates with described die cavity; The described punch of going up is slidingly fitted in described shoulder hole and the die cavity; Described going up on the punch also is with spring, and an end of described spring is against on the step of punch, and the other end of described spring is against on the step of shoulder hole; It also comprises plays rod, and described die shank is provided with through hole I, and described upper die plate is provided with the through hole II that communicates with described shoulder hole, and the described rod of beating is slidingly fitted in described through hole I and the through hole II.

After adopting above structure, the cold extrusion die of hex nut of the present invention compared with prior art has the following advantages:

Because the supporting plate of the cold extrusion die of hex nut of the present invention and described die sleeve flexibly connect, described flexible connection is meant between supporting plate and the die sleeve and slides earlier that supporting plate drives the die sleeve motion more then; The described step-like punch of going up is slidingly fitted in the shoulder hole of described upper mounted plate, between the step of the described step of going up punch and described shoulder hole a spring is installed, described beat rod be slidingly fitted in described die shank through hole I and with through hole II that described shoulder hole communicates in; Therefore, after the formed product during die sinking, the lifting that can under the drive of die shank, make progress of described cope match-plate pattern, upper die plate and upper mounted plate; Described supporting plate can also upwards promote under the drive of upper mounted plate, at this moment, just produces between described supporting plate and the die sleeve and slides; Upper mounted plate will separate with die sleeve, will drive die sleeve when supporting plate rises to certain altitude and upwards promote, and die sleeve lifting meeting separates with bottom plate; Can make simultaneously to produce between product and the lower punch and become flexible; When treating that supporting plate rises to certain altitude, strike impacting rod, last punch can move downward under the promotion of playing rod; This moment, product can break away from die sleeve under the promotion of last punch; Accomplish knockout course, the cold extrusion die of this kind structure makes the finished product demoulding quite easy, thereby can increase work efficiency.

As a kind of improvement of the present invention, described supporting plate and described die sleeve flexibly connect and are meant that be equipped with mounting hole on the supporting plate of the described left and right sides, the left and right sides of described die sleeve is equipped with pin, and described pin is slidingly fitted in the mounting hole of described supporting plate.This kind project organization is simple, realizes easily.

As another kind of improvement the of the present invention; Be provided with many thrust springs between described upper mounted plate and the described die sleeve; The lower end of described upper mounted plate is provided with the corresponding spring eye of quantity of quantity and described thrust spring; The upper end of described thrust spring is against on the roof of described spring eye, and the lower end of described thrust spring is spacing on described die sleeve.Owing to be provided with many thrust springs between described upper mounted plate and the described die sleeve; Make and leave the space between the upper mounted plate and die sleeve after the mould die sinking; Like this, in matched moulds, die sleeve can contact with bottom plate earlier; Upper mounted plate contacts with die sleeve more then, makes that the workpiece in the preceding die sleeve of matched moulds can not ejected by last punch.

Also have a kind of improvement as of the present invention, the lower end of described thrust spring is spacing to be meant that on described die sleeve described die sleeve is provided with alignment pin, and the lower end of described thrust spring is linked in outside the described alignment pin.This kind structure makes that the limit method of thrust spring lower end is simple in structure, realizes easily.

Description of drawings

Fig. 1 is the sectional structure sketch map of the cold extrusion die of hex nut of the present invention.

Fig. 2 is the left TV structure sketch map of the cold extrusion die of hex nut of the present invention.

Fig. 3 is the structural representation of hex nut.

Shown in the figure: 1, die shank, 1.1, through hole I, 2, cope match-plate pattern, 2.1, the guide pillar through hole, 3, upper die plate, 3.1, through hole II; 4, upper mounted plate, 4.1, upper guide post, 4.2, shoulder hole, 4.3, spring eye, 5, die sleeve, 5.1, die cavity; 5.2, pin, 5.3, alignment pin, 6, bottom plate, 6.1, guide pillar down, 7, the counterdie backing plate; 8, lower bolster, 8.1, guide pillar, 9, play rod, 10, supporting plate, 10.1, mounting hole; 11, lower punch, 12, go up punch, 12.1, blind hole, 13, spring, 14, thrust spring.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the present invention is described further.

See also Fig. 1, Fig. 2 and shown in Figure 3, the cold extrusion die of hex nut of the present invention comprises die shank 1, cope match-plate pattern 2, upper die plate 3, upper mounted plate 4, die sleeve 5, bottom plate 6, counterdie backing plate 7, lower bolster 8 and plays rod 9.Described counterdie backing plate 7 is fixed on the described lower bolster 8; Described bottom plate 6 is fixed on the described counterdie backing plate 7, and described die sleeve 5 is placed on the described bottom plate 6, and described upper mounted plate 4 is placed on the described die sleeve 5; Described upper die plate 3 is fixed on the described upper mounted plate 4; Described cope match-plate pattern 2 is fixed on the described upper die plate 3, and described die shank 1 is along connecting cope match-plate pattern 2 on cope match-plate pattern 2 thickness directions, and is fixed on the described cope match-plate pattern 2.The left and right sides of described upper die plate 3 is fixed with supporting plate 10, and described left and right sides supporting plate 10 all extends downwardly into the left and right sides of described die sleeve 5 and bottom plate 6, and described supporting plate 10 flexibly connects with described die sleeve 5.The endoporus of described die sleeve 5 is the die cavity 5.1 of mould.Described bottom plate 6 is provided with lower punch 11; Described upper mounted plate 4 is provided with punch 12; The described punch 12 of going up is provided with blind hole 12.1; Described lower punch 11 passes die cavity 5.1, and its upper end is positioned at the described blind hole 12.1 that goes up punch 12, and described lower punch 11 is slidingly matched with the described punch 12 of going up.Described lower bolster 8 is provided with guide pillar 8.1, and described cope match-plate pattern 2 is provided with guide pillar through hole 2.1, and described guide pillar 8.1 is slidingly fitted in the described guide pillar through hole 2.1.Described upper mounted plate 4 is provided with upper guide post 4.1; Described upper guide post 4.1 connects die sleeve 5 and bottom plate 6; And be slidingly matched with described die sleeve 5 and bottom plate 6; Described bottom plate 6 is provided with down guide pillar 6.1, and described guide pillar down 6.1 connects die sleeve 5, and is slidingly matched with described die sleeve 5.

Described upper mounted plate 4 is provided with punch 12 and is meant; Described upward punch 12 is a stairstepping; Described upper mounted plate 4 be provided with described die sleeve 5 corresponding and with the shoulder hole 4.2 of die cavity coaxial line, described shoulder hole 4.2 communicates with described die cavity 5.1, the described punch 12 of going up is slidingly fitted in the described shoulder hole 4.2; Described lower end of going up punch 12 slidably is engaged in the die cavity 5.1 of described die sleeve 5; Described going up on the punch 12 also is with spring 13, and an end of described spring 13 is against on the step of punch 12, and the other end of described spring 13 is against on the step of shoulder hole 4.2.Described die shank 1 is provided with through hole I 1.1, and described upper die plate 3 is provided with the through hole II 3.1 that communicates with described shoulder hole 4.2, and the described rod 9 of beating is slidingly fitted in described through hole I 1.1 and the through hole II 3.1.

Described supporting plate 10 flexibly connects with described die sleeve 5 and is meant that be equipped with mounting hole 10.1 on the described left and right sides supporting plate 10, the left and right sides of described die sleeve 5 is equipped with pin 5.2, and described pin 5.2 is slidingly fitted in the mounting hole 10.1 of described supporting plate 10.Be provided with many thrust springs 14 between described upper mounted plate 4 and the described die sleeve 5; The lower end of described upper mounted plate 4 is provided with the corresponding spring eye 4.3 of quantity of quantity and described thrust spring 14; The upper end of described thrust spring 14 is against on the roof of described spring eye 4.3, and the lower end of described thrust spring 14 is spacing on described die sleeve 5.The lower end of described thrust spring 14 is spacing to be meant that on described die sleeve 5 described die sleeve 5 is provided with alignment pin 5.3, and the lower end of described thrust spring 14 is linked in outside the described alignment pin 5.3.

Utilize the half-finished step of cold extrusion die production hex nut of hex nut of the present invention to be:

1, earlier seamless steel pipe is cut off blanking.The weight of the seamless steel pipe Duan Pin under the cutting weight that equals the product after cold extrusion shaped add the weight of allowance; Weight according to the seamless steel pipe Duan Pin behind the blanking is converted into the half-finished volume of hex nut again, thereby can confirm the volume of seamless steel pipe.

2, again seamless steel pipe Duan Pin is put into die cavity, and be linked in outside the lower punch, rod is played in the matched moulds punching press then, and seamless steel pipe is squeezed into the hex nut semi-finished product.

3 and then carry out die sinking, after the die sinking, beat impacting rod, the semi-finished product that make lower punch promote forming through the power transmission come off it in the die cavity of die sleeve, and a work period finishes at this point.

Below only be described, but can not be interpreted as it is restriction claim with regard to the embodiment of the cold extrusion die of hex nut of the present invention.The present invention is not limited to the structure of the foregoing description, also can be four like described supporting plate 10, can be separately fixed at the side all around of described upper die plate 3; Described mould also can have more by a mould; A plurality of die cavities 5.1 can be set on the die sleeve; With its accordingly, punch 12 on the quantity that quantity and described die cavity 5.1 can be set on the described upper mounted plate 4 is corresponding can be provided with the corresponding lower punch 11 of quantity of quantity and described die cavity 5.1 on described bottom plate 6; Can increase and beat excellent 9 diameters; It is contacted with the upper end of last punch 12 respectively, and the quantity of die cavity 5.1 can be along with the size of the tonnage of forcing press and is decided, and determines how many moulds goes out.All various variations of in the protection domain of claim of the present invention, being done are all in protection scope of the present invention.

Claims (3)

1. the cold extrusion die of a hex nut; It comprises die shank (1), cope match-plate pattern (2), upper die plate (3), upper mounted plate (4), die sleeve (5) and bottom plate (6); Described die sleeve (5) is placed on the described bottom plate (6), and described upper mounted plate (4) is placed on the described die sleeve (5), and described upper die plate (3) is fixed on the described upper mounted plate (4); Described cope match-plate pattern (2) is fixed on the described upper die plate (3); Described die shank (1) is along connecting cope match-plate pattern (2) and being fixed on the described cope match-plate pattern (2) on cope match-plate pattern (2) thickness direction, described bottom plate (6) is provided with lower punch (11), and described upper mounted plate (4) is provided with punch (12); The described punch (12) of going up is provided with blind hole (12.1); The upper end of described lower punch (11) is positioned at the described blind hole (12.1) that goes up punch (12), and is slidingly matched with the described punch (12) of going up, and it is characterized in that: the left and right sides of described upper die plate (3) all is fixed with supporting plate (10); Described left and right sides supporting plate (10) all extends downwardly into the left and right sides of die sleeve (5), and described supporting plate (10) flexibly connects with described die sleeve (5); Described upper mounted plate (4) is provided with punch (12) and is meant; Described upward punch (12) is a stairstepping; Described upper mounted plate (4) be provided with described die sleeve (5) corresponding and with the shoulder hole (4.2) of the die cavity coaxial line of die sleeve; Described shoulder hole (4.2) communicates with described die cavity (5.1), and the described punch (12) of going up is slidingly fitted in described shoulder hole (4.2) and the die cavity (5.1), and described going up on the punch (12) also is with spring (13); One end of described spring (13) is against on the step of punch (12), and the other end of described spring (13) is against on the step of shoulder hole (4.2); It also comprises plays rod (9); Described die shank (1) is provided with through hole I (1.1); Described upper die plate (3) is provided with the through hole II (3.1) that communicates with described shoulder hole (4.2), and the described rod (9) of beating is slidingly fitted in described through hole I (1.1) and the through hole II (3.1); Described supporting plate (10) flexibly connects with described die sleeve (5) and is meant; Be equipped with mounting hole (10.1) on the described left and right sides supporting plate (10); The left and right sides of described die sleeve (5) is equipped with pin (5.2), and described pin (5.2) is slidingly fitted in the mounting hole (10.1) of described supporting plate (10).
2. the cold extrusion die of hex nut according to claim 1; It is characterized in that: be provided with many thrust springs (14) between described upper mounted plate (4) and the described die sleeve (5); The lower end of described upper mounted plate (4) is provided with the corresponding spring eye of quantity (4.3) of quantity and described thrust spring (14); The upper end of described thrust spring (14) is against on the roof of described spring eye (4.3), and the lower end of described thrust spring (14) is spacing on described die sleeve (5).
3. the cold extrusion die of hex nut according to claim 2; It is characterized in that: the lower end of described thrust spring (14) is spacing to be meant on described die sleeve (5); Described die sleeve (5) is provided with alignment pin (5.3), and the lower end of described thrust spring (14) is linked in outside the described alignment pin (5.3).
CN201010141890XA 2010-04-01 2010-04-01 Cold extrusion die of hexagon nut CN101817029B (en)

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CN201010141890XA CN101817029B (en) 2010-04-01 2010-04-01 Cold extrusion die of hexagon nut

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Application Number Priority Date Filing Date Title
CN201010141890XA CN101817029B (en) 2010-04-01 2010-04-01 Cold extrusion die of hexagon nut

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CN101817029B true CN101817029B (en) 2012-04-04

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102069364B (en) * 2010-11-30 2012-07-18 山东华力电机集团股份有限公司 Process for manufacturing press-forming mould for simultaneously manufacturing a plurality of parts
CN102319808B (en) * 2011-10-10 2013-04-24 宁波浩渤工贸有限公司 Hot stamping mould for nut
CN102397935A (en) * 2011-12-05 2012-04-04 西安航天动力机械厂 Die for punching inner hexagonal hole of bolt
CN102688938B (en) * 2012-05-28 2015-02-18 宁波市鄞州剑均机械科技有限公司 Hot stamping mould of screw stud
CN102699213B (en) * 2012-06-21 2014-12-10 宁海县雁苍山电力建设有限公司 Hot stamping mold of copper piece
CN102716989B (en) * 2012-06-21 2015-04-15 宁波市鄞州剑均机械科技有限公司 Copper element hot stamping mold
CN104525602B (en) * 2014-12-23 2016-08-24 开封强力集团锚固技术股份有限公司 Metal spare and accessory parts Warm Extrusion molding equipment
CN106670251A (en) * 2017-03-15 2017-05-17 温州市强邦实业有限公司 Impact extrusion die for screw cap

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US4249408A (en) * 1978-07-12 1981-02-10 Robert Lovell Process for extruding maraging steel
CN1817554A (en) * 2006-03-16 2006-08-16 钱宗富 Directional axial conical standpipe process of motorcycle by disposable cold extruding formative machining
CN200967064Y (en) * 2006-11-10 2007-10-31 钱宗富 Cold extruding device for forming tube by using solid core bar material
CN201427147Y (en) * 2009-03-16 2010-03-24 鹤壁职业技术学院 Precision extrusion die for magnesium alloy shell part
CN201625678U (en) * 2010-04-01 2010-11-10 陆颂荫 Cold extruding die for hexagon nut

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5857251B2 (en) * 1979-05-28 1983-12-19 Toyota Motor Co Ltd

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4249408A (en) * 1978-07-12 1981-02-10 Robert Lovell Process for extruding maraging steel
CN1817554A (en) * 2006-03-16 2006-08-16 钱宗富 Directional axial conical standpipe process of motorcycle by disposable cold extruding formative machining
CN200967064Y (en) * 2006-11-10 2007-10-31 钱宗富 Cold extruding device for forming tube by using solid core bar material
CN201427147Y (en) * 2009-03-16 2010-03-24 鹤壁职业技术学院 Precision extrusion die for magnesium alloy shell part
CN201625678U (en) * 2010-04-01 2010-11-10 陆颂荫 Cold extruding die for hexagon nut

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Address after: 226368 Thean Hou Temple village, five town, Nantong, Jiangsu, Tongzhou District

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Address before: The 2 group of 226368 Jiangsu city of Nantong province Tongzhou District five Jie Zhen Yuan San Wei Cun

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