CN107952919A - Knitting needle pin base blanking die - Google Patents

Knitting needle pin base blanking die Download PDF

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Publication number
CN107952919A
CN107952919A CN201711474647.8A CN201711474647A CN107952919A CN 107952919 A CN107952919 A CN 107952919A CN 201711474647 A CN201711474647 A CN 201711474647A CN 107952919 A CN107952919 A CN 107952919A
Authority
CN
China
Prior art keywords
punch
pin
plate
knitting needle
cavity plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711474647.8A
Other languages
Chinese (zh)
Inventor
朱世根
丁浩
白云峰
骆祎岚
狄平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Donghua University
National Dong Hwa University
Original Assignee
Donghua University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Donghua University filed Critical Donghua University
Priority to CN201711474647.8A priority Critical patent/CN107952919A/en
Publication of CN107952919A publication Critical patent/CN107952919A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/02Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/14Dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21GMAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G1/00Making needles used for performing operations
    • B21G1/003Needles for special purposes, e.g. knitting, crochet, hat-pins

Abstract

The present invention relates to a kind of knitting needle pin base blanking die, including cope plate, cavity plate, discharging punch-pin, lead, punch-pin and lower template, discharging punch-pin can be installed in cavity plate up and down with respect to cavity plate, cavity plate is installed on the lower section of cope plate, punch-pin is installed on the top of lower template, ball guide post is installed in lower template, and the upper end of ball guide post coordinates installation with cope plate, cope plate and lower template are carried out to mould by lead, lead can be provided with stripper up and down, lower template bottom is installed by flexible reverse ejection device, elastic force is transmitted by mandril between stripper and elastic reverse ejection device.The present invention can prevent the pin base of punching occur collapsing angle, cone angle the problems such as, ensure dimensional accuracy, the problem of preventing fracture belt, local laceration and burr side, section reaches complete euphotic belt, improves glacing flatness and uniformity.

Description

Knitting needle pin base blanking die
Technical field
The invention belongs to the technical field of knitting needle punching, more particularly to a kind of knitting needle pin base blanking die.
Background technology
China is that the textile producer of maximum and exported country, the current whole world are used for the raw material total amount for being knitted product in the world Already exceed the dosage of traditional woven thing.Hosiery trade is playing an increasingly important role in the national economic development.Knitting needle It is the core knitting element on knitting machine, dosage great Yi consumes, dimensional accuracy and cross section quality requirement are high.In looming process In, the section through needle is directly contacted with yarn, is frequently rubbed, its cross section quality directly affects the quality of fabric.At present, Knitting needle manufacturing enterprise of China shares family about more than 40, because most of domestic enterprise's abilities to develop independently are limited, domestic pin equipment processed Scientific and technological content it is relatively low, knitting needle quality also can not meet the technical requirements of high-grade pin, in being mainly engaged in, the life of low-grade knitting needle Production.High-grade knitting needle market is still occupied by foreign brand name, and such as German Groz Bake is special, the great Han knitting needles and Samsung of South Korea Pin etc..Although import knitting needle price is high, its material is high-quality, pin it is elastic it is good, syringe needle is wear-resisting, service life is long, size is smart Degree is high, and particularly punching cross section quality is good, is not easy to hook disconnected fabric fibre, so sales volume is good, competitiveness is strong.
Pin base is mainly to be formed by steel band punching, and generally existing is collapsed angle, euphotic belt, fracture belt, local laceration, burr side With cone angle equal section feature.Collapse angle and cone angle can influence the dimensional accuracy of pin base;Fracture belt, local laceration and burr side can pluckings Broken yarn line is even hooked, belongs to punching defect.Euphotic belt any surface finish and good straightness degree, can reduce later stage skin processing workload, The formation of euphotic belt and mould structure are closely related.
Mould rushes the carrier of base process as knitting needle, its reasonability designed will directly affect pin base punching quality.Commonly Blanking die is simple in structure, and the accuracy of manufacture is low, and blade clearance is uneven, and the pin base cross section quality gone out is very poor.Zhi Zhen enterprises are normal Blanking part cross section quality is improved with techniques such as finishing, fines.Renovation process using two procedures can increase manually with equipment into This, can increase mold manufacturing difficulty and cost again using progressive die.Special triaxial pressure machine needed for fine is expensive, uses To improve Blanking thick plank quality, the base that rushes for knitting needle class thin plate smallclothes does not meet economic benefit.So rational in infrastructure, punching Quality is good, efficient, and it is the pass that product competitiveness improves in domestic Zhi Zhen enterprises that mould and the low knitting needle of punching machine cost, which rush mold tool, Key.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of knitting needle pin base blanking die, prevent pin base occur collapsing angle, Cone angle etc. influences the problem of dimensional accuracy, and the problem of preventing fracture belt, local laceration and burr side, section reaches complete light Bright band, improves glacing flatness and uniformity.
The technical solution adopted by the present invention to solve the technical problems is to provide a kind of knitting needle pin base blanking die, including upper Template, cavity plate, discharging punch-pin, lead, punch-pin and lower template, the discharging punch-pin can be installed on up and down with respect to cavity plate In cavity plate, the cavity plate is installed on the lower section of cope plate, and the punch-pin is installed on the top of lower template, is installed in the lower template There is the upper end of ball guide post and ball guide post with cope plate to coordinate to install, the cope plate and lower template are carried out by lead To mould, the lead can be provided with stripper up and down, and flexible reverse ejection device is installed in the lower template bottom, described Elastic force is transmitted by mandril between stripper and elastic reverse ejection device.
The cavity plate is installed on the lower surface of cope plate by die block.
The discharging punch-pin by discharging punch-pin floor installation in cavity plate and upper end pass through knockout rod transmit dnockout power, institute Discharging punch-pin floor installation is stated inside the top surface, die block of cavity plate.
The top surface of the cope plate is provided with horizontal handle.
The ball guide post is arranged to four and matrix form distributing installation in lower template, and the lower face of the cope plate is set Have and the matched casing of ball guide post.
The punch-pin and lead are fixed on punch retainer, and the punch retainer is installed on backing plate, the pad Plate is installed on the top surface of lower template.
The lead is arranged to centered on punch-pin, four of matrix form distribution, and corresponding to lead on the cavity plate opens There is location hole, the stripper corresponds to and is provided with pilot hole.
On the stripper through hole consistent with punch-pin shape is provided with the corresponding position of punch-pin.
The mandril is arranged to centered on punch-pin, four of matrix form distribution.
The elasticity reverse ejection device includes rubber column and two pieces of tablets, and two pieces of tablets are individually fixed in the upper of rubber column Lower both ends, the mandril lower end are connected with the tablet of rubber column upper end.
Beneficial effect
First, the present invention using punch-pin under, cavity plate in upper structure, form upside-down mounting with traditional blanking die, avoid Stretching of the convex mould to material strip is punched, is conducive to improve the glacing flatness of institute's red needle base;Second, which is disappeared by lead positioning Being protected to mould error, and by the kinematic error of ball guide post elimination punching press, two kinds of accurate cooperations being oriented to when being installed except mould The dimensional accuracy of punching pin base is demonstrate,proved;3rd, the pressure of punching press of the present invention forms anti-top power by elastic reverse ejection device, to flitch Part forms pressure-plate-force, adds the plasticity of material near die point, has delayed the generation and expansion of micro-crack in material shear zone Exhibition, while improve the glacing flatness for going out pin base.Therefore, the present invention can prevent pin base from the influence size such as angle, cone angle of collapsing occur The problem of precision, the problems such as avoiding the occurrence of fracture belt, local laceration and burr side, section reaches complete euphotic belt, improves flat Straight degree and uniformity.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the present invention.
Fig. 2 is the planar structure schematic diagram of the present invention.
Fig. 3 is the dimensional structure diagram of the lower mould of the present invention.
Fig. 4 is the dimensional structure diagram of mold of the present invention.
Fig. 5 is the structure diagram of present invention punching gained pin base.
Embodiment
With reference to specific embodiment, the present invention is further explained.It is to be understood that these embodiments are merely to illustrate the present invention Rather than limit the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, people in the art Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited Scope.
A kind of knitting needle pin base blanking die as shown in Figs 1-4, including cope plate 10, cavity plate 8, discharging punch-pin 14, guiding Column 6, punch-pin 15 and lower template 3.
Cavity plate 8 is installed on the lower surface of cope plate 10 by die block 9.Discharging punch-pin 14 passes through discharging punch-pin base 13 are installed in cavity plate 8, and dnockout power is transmitted in upper end by knockout rod 12, can move up and down with respect to cavity plate 8, in discharging by cavity plate Pin base ejection in 8, discharging punch-pin base 13 are installed on the top surface of cavity plate 8, inside die block 9.The top surface of cope plate 10 Horizontal handle 11 is installed, for mold to be fixed to press machine.
Punch-pin 15 and lead 6 are fixed on punch retainer 5, and punch retainer 5 is installed on backing plate 4, and backing plate 4 is installed In the top surface of lower template 3.Lead 6 is arranged to centered on punch-pin 15, four of matrix form distribution, corresponding on cavity plate 8 to be oriented to Column 6 is provided with location hole, when four leads 6 are used to eliminate mould installation to mould error.Matrix form is provided with four in lower template 3 Root ball guide post 18, the lower face of cope plate 10 be equipped with 18 matched casing of ball guide post, the upper end of ball guide post 18 with Cope plate 10 coordinates installation, for eliminating the kinematic error of punching press, ensure that the dimensional accuracy of pin base.
Lead 6 can be provided with stripper 7 up and down, be provided with stripper 7 with 15 corresponding position of punch-pin with The consistent through hole of 15 shape of punch-pin.Flexible reverse ejection device is installed in 3 bottom of lower template, and elastic reverse ejection device includes 2 He of rubber column Two pieces of tablets 1, two pieces of tablets 1 are individually fixed in the upper and lower ends of rubber column 2.Pass through between stripper 7 and elastic reverse ejection device Mandril 16 transmits elastic force, and mandril 16 is arranged to centered on punch-pin 15, four of matrix form distribution, and mandril 16 passes through lower template 3 So that lower end is connected with the tablet 1 of 2 upper end of rubber column.
The typical course of work of one, the mould is:After the completion of mould installation and debugging, the steel band 17 of leveling is positioned over discharging On plate 7;Punching machine is opened, and punch drives whole upper mold to move downward, and since cavity plate 8 contacts steel band 17, stripper 7 starts to be subject to Lower pressure is delivered on tablet 1 by the lower pressure of punch, four mandrils 16, and rubber column 2 produces bounce by compression, right in turn Steel band 17 forms pressure-plate-force;Punch further moves downward, and punch-pin 15 starts plate being pressed into cavity plate 8, the 2 anti-power of top of rubber column Also become larger therewith;Punch continues downward, until lower limit position, rubber column 2 instead pushes up power and also reaches maximum, pin base and steel at this time Band 17 is kept completely separate;Back punching head start to drive whole upper mold to move upwards, pin base stays in cavity plate 8 therewith after being separated with plate Together rise;Rubber column 2 replys shape and produces screen resilience, that is, stripping force, and mandril 16, which transmits elastic force, rises stripper 7, makes steel band 17 depart from punch-pin 8;When punch is risen to close to upper extreme position, punching machine produces dnockout power, by knockout rod 12 by dnockout power Discharging punch-pin 14 is delivered to, discharging punch-pin 14 ejects the pin base in cavity plate 8.Meanwhile the pin base of ejection is blown into by jet gun Hopper simultaneously blows away the burr to drop on mould, completes the forming process of a pin base.
The mould using punch-pin 15 under, cavity plate 8 in upper inverted structure, be conducive to improve the glacing flatness of institute's red needle base. Using small―gap suture round edge die theory, small punch-die cutting edge radius of corner and the clearance between punch and die for zero are used.Between zero Gap is high to mould required precision to punch-die, therefore this mould uses positioning accuracy and the highest four pillar die sets knot of stability Structure, four outer guiding posts are ball guide post 18.Mould, which also add, is oriented to 6 columns in four precisions, have on cavity plate four it is corresponding Location hole is used to coordinate.Four outer guiding posts are used for the kinematic error for eliminating punch, when four inner guiding posts are used to eliminate mould installation To mould error, four outer guiding posts and four inner guiding post collective effects, when substantially increasing punching punch-die to mould precision, from And it ensure that the dimensional accuracy of punching gained pin base (such as Fig. 5).
Polyurethane rubber column 2 is the main element of elastic reverse ejection device, and punch is fallen when rushing base, and lower pressure is passed by mandril Rubber is handed to, rubber column 2, which is compressed, produces anti-top power, forms pressure-plate-force to plate, adds the modeling of material near die point Property, delay the generation and extension of micro-crack in material shear zone, while improve the glacing flatness for going out pin base.Stamping and plate After separation, punch rises, and rubber column 2 produces screen resilience, that is, stripping force, steel band 17 is departed from punch-pin 15.Due to being that elasticity is unloaded Material, 17 deformation effect area of steel band are small.Stripper 7 plays binder when punch falls, and plays discharging when punch rises, unloads Also there are four guide pillar holes on flitch 7, stripper is moved up and down along four leads 6.Four mandrils 16 are used in stripper 7 Elastic force is transmitted between elastic reverse ejection device, the tablet 1 at 2 both ends of rubber column makes the power of four transmission of mandrils 16 evenly.

Claims (10)

1. a kind of knitting needle pin base blanking die, including cope plate (10), cavity plate (8), discharging punch-pin (14), lead (6), punch-pin (15) can be installed on up and down with respect to cavity plate (8) in cavity plate (8) with lower template (3), the discharging punch-pin (14), its feature It is:The cavity plate (8) is installed on the lower section of cope plate (10), and the punch-pin (15) is installed on the top of lower template (3), described The upper end that ball guide post (18) and ball guide post (18) are provided with lower template (3) coordinates with cope plate (10) and installs, it is described on Template (10) and lower template (3) carry out that to mould, the lead (6) discharging can be provided with up and down by lead (6) Plate (7), lower template (3) bottom are installed flexible reverse ejection device, are passed through between the stripper (7) and elastic reverse ejection device Mandril (16) transmits elastic force.
A kind of 2. knitting needle pin base blanking die according to claim 1, it is characterised in that:The cavity plate (8) passes through cavity plate Fixed plate (9) is installed on the lower surface of cope plate (10).
A kind of 3. knitting needle pin base blanking die according to claim 2, it is characterised in that:The discharging punch-pin (14) passes through Discharging punch-pin base (13) is installed in cavity plate (8) and dnockout power, the discharging punch-pin bottom are transmitted in upper end by knockout rod (12) It is internal that seat (13) is installed on the top surface of cavity plate (8), die block (9).
A kind of 4. knitting needle pin base blanking die according to claim 1, it is characterised in that:The top surface of the cope plate (10) Horizontal handle (11) is installed.
A kind of 5. knitting needle pin base blanking die according to claim 1, it is characterised in that:The ball guide post (18) is set It is four and matrix form distributing installation in lower template (3), the lower face of the cope plate (10) is equipped with and ball guide post (18) Matched casing.
A kind of 6. knitting needle pin base blanking die according to claim 1, it is characterised in that:The punch-pin (15) and lead (6) it is fixed on punch retainer (5), the punch retainer (5) is installed on backing plate (4), and the backing plate (4) is installed on down The top surface of template (3).
A kind of 7. knitting needle pin base blanking die according to claim 1 or 6, it is characterised in that:The lead (6) is set Location hole is provided with to correspond to lead (6) centered on punch-pin (15), four that matrix form is distributed, on the cavity plate (8), it is described Stripper (7) correspondence is provided with pilot hole.
A kind of 8. knitting needle pin base blanking die according to claim 1, it is characterised in that:On the stripper (7) with it is convex Mould (15) corresponding position is provided with the through hole consistent with punch-pin (15) shape.
A kind of 9. knitting needle pin base blanking die according to claim 1, it is characterised in that:The mandril (16) be arranged to Centered on punch-pin (15), matrix form distribution four.
A kind of 10. knitting needle pin base blanking die according to claim 1, it is characterised in that:The elasticity reverse ejection device bag Rubber column (2) and two pieces of tablets (1) are included, two pieces of tablets (1) are individually fixed in the upper and lower ends of rubber column (2), the top Bar (16) lower end is connected with the tablet (1) of rubber column (2) upper end.
CN201711474647.8A 2017-12-29 2017-12-29 Knitting needle pin base blanking die Pending CN107952919A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711474647.8A CN107952919A (en) 2017-12-29 2017-12-29 Knitting needle pin base blanking die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711474647.8A CN107952919A (en) 2017-12-29 2017-12-29 Knitting needle pin base blanking die

Publications (1)

Publication Number Publication Date
CN107952919A true CN107952919A (en) 2018-04-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711474647.8A Pending CN107952919A (en) 2017-12-29 2017-12-29 Knitting needle pin base blanking die

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111872287A (en) * 2020-07-06 2020-11-03 浙江钜锋针业股份有限公司 Non-woven flocking needle multi-surface tooth pressing forming equipment and process

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202877326U (en) * 2012-11-13 2013-04-17 南通市光阳针业有限公司 Precision knitting needle stamping die

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202877326U (en) * 2012-11-13 2013-04-17 南通市光阳针业有限公司 Precision knitting needle stamping die

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
肖祥芷等: "《中国模具工程大典 第4卷 冲压模具设计》", 31 March 2007, 电子工业出版社 *
陈炎嗣: "《冲压模具实用结构图册》", 31 October 2016, 北京:机械工业出版社 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111872287A (en) * 2020-07-06 2020-11-03 浙江钜锋针业股份有限公司 Non-woven flocking needle multi-surface tooth pressing forming equipment and process
CN111872287B (en) * 2020-07-06 2022-02-25 浙江钜锋针业股份有限公司 Non-woven flocking needle multi-surface tooth pressing forming equipment and process

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Application publication date: 20180424

RJ01 Rejection of invention patent application after publication