CN107952864A - Powder metallurgy fanning strip answers punch die - Google Patents

Abstract

The present invention relates to powder metallurgy to answer stamping die, specially powder metallurgy fanning strip answers punch die, solve the problems, such as that existing powder metallurgy fanning strip answers that punch die structure is unreasonable, operation stability is poor, punching is of low quality, die life is short, maintenance and repair is inconvenient, scheme：Including upper mold cover board, upper mold seat, re-packs, upper padding plate, upper mounted plate, cavity plate, push plate, stripper, punch-pin, bottom plate, die holder, dnockout bolt, the contour set of dnockout, makes bar, stripper bolt, the contour set of discharging, rectangle piece, punch.Advantage：1st, push plate and the depth of parallelism that re-packs ensure that dnockout steady and smooth, does not get stuck, and dnockout bolt is not easily broken by the contour set of dnockout；2nd, stripper projecting height is ensured by the contour set of discharging, and discharging elastic force is convenient to be adjusted, spring life length；3rd, punch-pin broach consolidates, and does not rock；4th, rectangle piece piece is reasonable, and deformation is small, and cavity plate comb portion punch is connected firmly, and facilitates milling gap, and punching quality is high.

Description

Powder metallurgy fanning strip answers punch die

Technical field

The present invention relates to powder metallurgy to answer stamping die, is specially that powder metallurgy fanning strip answers punch die.

Background technology

Powder metallurgy has been obtained for being widely applied in the one-shot groove mould in mold manufacturing, and the punching service life is up to hundred More than ten thousand times.This material has high wearability, high compression strength, good quenching degree, good toughness, good heat The characteristics of Treatment Stability, extraordinary temper resistance.And for large-scale multiple stamping die, since powder metallurgy is in module There are problem for size, thickness, processing, mould structure etc. so that such technology is difficult to be extended to large-scale multiple punch die Tool.Existing large-scale multiple stamping die is to being followed successively by upper mold cover board 1 on, and upper mold seat 2 re-packs 3, upper padding plate 4, upper fixation, and 5, it is recessed Mould 6, push plate 7, stripper 8, punch-pin 9, bottom plate 10, die holder 11 and ball lead 12, the upper mold seat 2 is towards upper mold The one side of cover board 1 is provided with the chamber that re-packs, and the intracavitary that re-packs is equipped with and re-packs 3, and described re-pack is equipped with rubber 27, institute between 3 and upper mold cover board 1 State the bottom of chamber portion that re-packs and be provided with countersunk head through hole, be provided with the upper padding plate 4 and upper mounted plate 5 and the corresponding dnockout spiral shell of countersunk head through hole Bolt via, the countersunk head through hole and dnockout bolt through-hole are interior to be equipped with dnockout bolt 13, and 13 upper end of dnockout bolt, which is supported on, to be beaten 3 lower surface of plate, lower end are screwed in push plate 7；Lengthening set 28 is inlaid with the stripper 8, described lengthen in set 28 is installed with lower end The screw 29 being screwed on bottom plate 10, is equipped with rubber 27 between the stripper 8 and bottom plate 10.Existing multiple stamping die With following defect：When the 1st, working, the dnockout bolt 13 of upper mold be connected fixation with push plate 7, one widgets of composition, punch-pin 9 and After cavity plate 6 molds, punch-pin 9 promotes push plate 7 to move up, and push plate 7 drives dnockout bolt 13 to push up the 3 compression rubbers that re-pack 27, after the completion of punching, punch-pin 9 is separated with cavity plate 6, and rubber 27 provides screen resilience, and promotion re-packs 3, dnockout bolt 13, and push plate 7 will For the plate being punched by being released in cavity plate 6, the turnery processing length of each dnockout bolt 13 cannot be completely the same, causes dnockout It cannot be guaranteed that push plate 7 is horizontal after bolt 13 is connected with push plate 7, push plate 7 and re-pack 3 in blanking process discontinuity and cause Push plate 7 tilts, so as to influence normal dnockout, there is also and gets stuck sometimes；2nd, 13 one end of dnockout bolt is connected with push plate 7, One end, which is supported on, to re-pack on 3, and the power that is hit is larger, the situation that dnockout bolt 13 is interrupted often occurs；3rd, when cutting edge is ground to one When determining degree needs to shorten dnockout bolt 13, the inconvenience of dnockout bolt 13 of such a structure truncates, can only brand-new, reprocess, safeguard It is extremely inconvenient to come；4th, the stripper 8 of lower die provides stripping force by cheap rubber 27, and stability is poor, short life；5th, discharging The height of 8 upper surface of plate stretching punch-pin 9 is screwed into the depth adjustment of bottom plate 10, stripper 8 and 9 upper surface of punch-pin by screw 29 The depth of parallelism can not ensure；6th, each 29 coupling mechanism force of screw is inconsistent, and the screen resilience that rubber 27 provides is unstable, in stripper 8 There is pull-up active force to screw 29 during uplink, cause screw 29 easily to be loosened in blanking process, so that spiral shell occurs Nail loosening processus aboralis, which is jumped on punch-pin 9, damages cutting edge；7th, further, since fanning strip design of part is complicated, sector component top has one Broach is arranged, its structure has certain particularity, and the cavity plate 6 and punch-pin 9 of existing multiple punch die are processed using wire cutting mode Integral formula, has the comb portion of part assembled piece type cavity plate and punch-pin also to form an entirety with surrounding, in grinding punch-pin and cavity plate Fit clearance, and during the comb portion of solid punch and cavity plate it is very difficult, cause Dies ' Blanking of low quality or die life Greatly shorten.Current existing fanning strip answer the push plate of punch die, stripper, fixed plate use 45# steel normalized treatments, guarantee mould The service life of tool；Connected between upper and lower mould using four 60 large size ball guidance systems of φ.This multiple punch die structure, mould punching The sanction service life, which has reached sharpening every time, can be punched ten thousand punchings of 4-5, can reach when state is good more than 100,000 times, die life puts down At 5,000,000 times or so, but there be very big gap other small rigid alloy molds that compare, die life.And if Punching is produced in enormous quantities, and die life still can not fully meet the needs of production.Therefore, a kind of rational in infrastructure, operation of design Stablize, punching quality height, long lifespan, the convenient fanning strip of maintenance and repair answers punch die is extremely necessary.

The content of the invention

The present invention solve at present existing powder metallurgy fanning strip answer punch die structure is unreasonable, operation stability is poor, be punched A kind of of low quality, the problem of die life is short, maintenance and repair is inconvenient, there is provided rational in infrastructure, stable, punching quality Good, die life length, the convenient powder metallurgy fanning strip of maintenance maintenance answer punch die.

The present invention is achieved by the following technical solutions：Powder metallurgy fanning strip answers punch die, including multiple punch die body, institute State multiple punch die body include upper mold cover board, upper mold seat, re-pack, upper padding plate, upper mounted plate, cavity plate, push plate, stripper, punch-pin, under Fixed plate, die holder, ball lead, the upper surface that re-packs are provided with countersunk head through hole, the bottom of chamber portion that re-packs of the upper mold seat, on Dnockout bolt through-hole corresponding with countersunk head through hole is provided with backing plate, upper mounted plate, in the countersunk head through hole and dnockout bolt through-hole The dnockout bolt being screwed in equipped with lower end in push plate, is cased with the high set upper sides such as the contour set of dnockout, the dnockout on the dnockout bolt The lower surface that re-packs is supported on, lower end is supported on push plate upper surface, re-pack bottom of chamber portion, upper padding plate, the upper mounted plate of the upper mold seat On be also provided with correspond beat bar via, it is described to make the bar of beating for being equipped with bar via and being supported on and re-packing between push plate, it is described Stripper bolt through hole is provided with bottom plate, is installed with stripper bolt from bottom to top in it, the stripper bolt upper end, which is supported by, unloads Expect that the high set upper side such as contour set, the discharging is supported on stripper lower surface, the length of the contour set of discharging is more than stripper The distance between lower surface and bottom plate upper surface, the outside diameter of the diameter and the contour set of discharging of the stripper bolt through hole are matched somebody with somebody Close, and more than the major diameter of thread of stripper bolt, less than the head diameter of stripper bolt, the stripper upper surface is provided with connection spiral shell Countersunk head through hole is followed closely, being installed with lower end in the attachment screw countersunk head through hole passes through the contour set of discharging, the connection being screwed in stripper bolt Screw, is provided with spring through hole corresponding with stripper bolt through hole on the die holder, the diameter of the spring through hole is more than discharging The head diameter of bolt, the infraoral of the spring through hole are cased with screw thread, and screw plug is screwed with screw thread, is equipped with the spring through hole The discharging spring being supported between stripper bolt and screw plug；The punch-pin is made of the split of two pieces of left and right, the broach of the punch-pin Portion outer end is equipped with dowel close to the root of bottom plate；The surrounding of the cavity plate forms scallop hole by rectangle piece split, respectively Rectangle piece is fixedly connected by connecting pin with upper mounted plate, and the comb portion of the cavity plate is embedded in upper mounted plate by multiple intervals On punch composition, the rectangle piece and punch cooperatively form cavity plate.Countersunk head through hole is provided with the re-packing of upper mold, its interior dnockout Bolt, is cased with being supported on the contour set of the dnockout to re-pack between push plate on dnockout bolt, and bar is made in the support between push plate that re-packs, and pushes away The depth of parallelism of plate is ensured by the contour set of dnockout, when cutting edge, which is ground to, to determine degree, can ensure to push away by grinding the contour set of hand-to-hand fight in tights material Plate is parallel with re-packing and uniform force, safeguards more convenient, and operation is more reliable.It is equipped between the stripper and fixed plate of lower die The contour set of discharging, is installed with stripper bolt on bottom plate, the nut of stripper bolt is stuck on the lower surface of bottom plate, plays limit Position effect, ensures that stripper protrudes the height of punch-pin by the length of the contour set of reconditioning discharging, meanwhile, the spacing of stripper bolt is gone back Can ensure will not there is excessive upward pulling force to attachment screw during stripper uplink, avoid attachment screw loosen and kick arrives Cutting edge is damaged on punch-pin.By adjusting the screw-in depth of screw plug, the elastic force of conveniently adjusted stripper.The comb portion outer end of punch-pin The dowel for connecting each broach is equipped with close to the root of bottom plate, reinforcement fixation is carried out to the comb portion of punch-pin, it is ensured that punching The stability of comb portion during sanction, improves the fan-shaped tablet quality being punched out, due to can only use cutting edge portion and punch-pin during punching Top, therefore the dowel of root will not impact mold clamping.Cavity plate surrounds scallop hole by the rectangle piece of surrounding, closes Reason design piece shape, avoids the occurrence of L-shaped piece, reduces deformation during piece cutting on line.The comb portion of cavity plate is by multiple Every the punch being embedded on the upper mounted plate composition of setting, in assembly mold, embedding groove is opened on upper mounted plate, with punch-pin Surrounding is positioning datum, is first fixedly connected with the rectangle piece of cavity plate surrounding with upper mounted plate with connecting pin, then in punch-pin Comb portion and the good gap gasket of surrounding pad, smear anaerobic adhesive, with punch-pin in the punch of cavity plate and the embedding groove of upper mounted plate Comb portion is positioning datum, inlays the punch of fixed cavity plate.Such a punch structure, is connected firmly in punching with upper mounted plate, Solve the problems, such as that cavity plate comb portion can not be surely fixed with connecting pin, and between the convenient cooperation for grinding punch and punch-pin comb portion Gap, improves the quality of punching.

The present invention has the following advantages：1st, upper mold push plate and the depth of parallelism that re-packs ensure that dnockout is steadily suitable by the contour set of dnockout Freely, be not in get stuck, dnockout bolt is not easy to interrupt；2nd, the height of lower die stripper protrusion punch-pin is ensured by the contour set of discharging, Discharging elastic force is convenient to be adjusted, and spring life is longer, is operated steadily reliable；3rd, punch-pin comb portion stable connection, when punching, will not shake It is dynamic, improve punching quality；4th, the rectangle piece optimization piece position of cavity plate, avoids L-shaped piece from deforming, cavity plate comb portion rushes Head is connected firmly, and easy to grind fit clearance, improves punching quality, extends die life.

Brief description of the drawings

Fig. 1 is schematic structural view of the invention；

Fig. 2 is existing multiple punch die dnockout structure diagram；

Fig. 3 is dnockout structure partial enlarged drawing of the present invention；

Fig. 4 is existing multiple punch die discharging structure schematic diagram；

Fig. 5 is discharging structure partial enlarged view of the present invention；

Fig. 6 is punch structure schematic diagram of the present invention；

Fig. 7 is cavity plate rectangle piece schematic diagram of the present invention；

In figure：1- upper mold cover boards, 2- upper mold seats, 3- re-pack, 4- upper padding plates, 5- upper mounted plates, 6- cavity plates, 7- push plates, 8- dischargings Plate, 9- punch-pin, 10- bottom plates, 11- die holders, 12- ball leads, 13- dnockout bolts, the contour set of 14- dnockouts, 15- are beaten Bar, 16- stripper bolts, the contour set of 17- dischargings, 18- attachment screws, 19- screw plugs, 20- discharging springs, 21- dowels, 22- squares Shape piece, 23- punches, 24- mandrils, 25- float nail, and 26- pin stop, 27- rubbers, 28-, which is lengthened, to be covered, 29- screws.

Embodiment

Powder metallurgy fanning strip answers punch die, including multiple punch die body, and the multiple punch die body includes upper mold cover board 1, upper mold Seat 2, the 3, upper padding plate 4 that re-packs, upper mounted plate 5, cavity plate 6, push plate 7, stripper 8, punch-pin 9, bottom plate 10, die holder 11, rolling Pearl lead 12,3 upper surfaces that re-pack are provided with countersunk head through hole, the bottom of chamber portion that re-packs of the upper mold seat 2, upper padding plate 4, upper fixation Dnockout bolt through-hole corresponding with countersunk head through hole is provided with plate 5, is twisted in the countersunk head through hole and dnockout bolt through-hole equipped with lower end Dnockout bolt 13 in push plate 7, the contour set 14 of dnockout, 14 upper end branch of the contour set of dnockout are cased with the dnockout bolt 13 In 3 lower surfaces that re-pack, lower end is supported on 7 upper surface of push plate, the bottom of chamber portion that re-packs of the upper mold seat 2, upper padding plate 4, upper fixation for support Also be provided with plate 5 correspond beat bar via, it is described beat to be equipped with to be supported on to re-pack in bar via make bar between 3 and push plate 7 15, stripper bolt through hole is provided with the bottom plate 10, is installed with stripper bolt 16, the stripper bolt 16 from bottom to top in it Upper end is supported by the contour set 17 of discharging, and 17 upper ends of the contour set of discharging are supported on 8 lower surface of stripper, the contour set of discharging 17 length is more than the distance between 8 lower surface of stripper and 10 upper surface of bottom plate, the diameter of the stripper bolt through hole With the major diameter fit of the contour set 17 of discharging, and more than the major diameter of thread of stripper bolt 16, less than the head diameter of stripper bolt 16, 8 upper surface of stripper is provided with attachment screw countersunk head through hole, and lower end is installed with the attachment screw countersunk head through hole and passes through discharging Contour set 17, the attachment screw 18 being screwed in stripper bolt 16, is provided with the die holder 11 corresponding with stripper bolt through hole Spring through hole, the diameter of the spring through hole are more than the head diameter of stripper bolt 16, and the infraoral of the spring through hole is cased with Screw thread, screw plug 19 is screwed with screw thread, the discharging bullet being supported between stripper bolt 16 and screw plug 19 is equipped with the spring through hole Spring 20；The punch-pin 9 is made of the split of two pieces of left and right, the comb portion outer end of the punch-pin 9, is set close to the root of bottom plate 10 There is the dowel 21 for connecting each broach；The surrounding of the cavity plate 6 forms scallop hole, each rectangle piece by 22 split of rectangle piece 22 are fixedly connected by connecting pin with upper mounted plate 5, and the comb portion of the cavity plate 6 is embedded on upper mounted plate 5 by multiple intervals Punch 23 form, the rectangle piece 22 and punch 23 cooperatively form cavity plate 6.

When it is implemented, being installed with mandril 24 on the bottom plate 10 from bottom to top, the upper end of the mandril 24 is supported on 8 lower surface of stripper, termination is installed with the bottom plate 10 and stripper 8 and exposes the floating of 8 upper surface of stripper from bottom to top Nail 25 and pin stop 26,25 upper ends of the floating nail are bulb, and 26 upper end of pin stop is higher than floating nail 25, the die holder It is provided with 11 respectively with mandril 24, floating nail 25,26 corresponding through hole of pin stop, through hole termination is threaded, is screwed with screw thread Screw plug, spring is supported by between mandril 24, floating nail 25, pin stop 26 and screw plug respectively.Mandril 24 provides rebound for stripper 8 Power, pin stop 26 are used to position plate during feeding, and floating nail 25 jacks up plate in feeding and discharging, avoid sending out with cutting edge Raw friction is collided with, and said structure causes mould to be more applicable for automation punching processing operation.

The punch-pin 9, cavity plate 6 Assab of material selection Sweden ASP60, the 8 material selection perhardened steel P40 of stripper, Fixed plate 5, push plate 7 and upper padding plate 4 select Cr12Mo1V1, and the ball lead 12 selects φ 70mm balls to be oriented to Column, the punch 23 of the cavity plate 6 are embedded in upper mounted plate 5 using anaerobism gluing knot.ASP60 is a kind of high alloy powder metallurgy High-speed steel, is the high alloy high-speed steel containing Co manufactured through powder metallurgical technique, it not only has high wearability and good Toughness；And have good quenching degree, good heat treatment stability and extraordinary temper resistance；Punch and matrix is set to exist " zero stress " state is in during use, greatly improves die life.According to product batch requirements, by analyzing mould The factor such as the design feature of major part and blanking pressure, determines stripper material selection perhardened steel P40；Upper mounted plate, push plate and Upper padding plate selects Cr12Mo1V1, and the service life of each component can be greatly improved, and ensures the stability of mould structure.Using φ 70mm balls lead substitutes existing 60 ball leads of φ, ensures that mould structure is relatively reliable, avoids lathe reason from causing The improper damage of mould.Punch is inlayed using anaerobism gluing knot, dismounting is more convenient when punch damages and is replaced.

In use, autoloader push plate enters laterally, pin stop 26 positions plate, and cavity plate 6 is transported downwards It is dynamic, promote stripper 8 to move down, the contour set 17 of 8 times pressure discharges of stripper, stripper bolt 16, compression discharging spring 20, punch-pin 9 support push plates 7 move up, and the contour set 14 of bar 15, dnockout bolt 13, dnockout is played in the support of push plate 7, re-pack 3 movements upwards, is re-packed 3 compression rubbers 27, punch-pin 9 cooperate with cavity plate 6, and fanning strip is punched out using cutting edge.Then cavity plate 6 moves upwards, rubber 27 rebound supports, which re-pack, 3 to be moved down, and contour guarantee push plates 7 of set 14 of dnockout and re-packing 3 move in parallel and uniform force, will be embedded in Fanning strip in cavity plate 6 is hit down., will meanwhile mandril 24, stripper bolt 16, the contour promotion of set 17 stripper 8 of discharging move up The plate being punched on punch-pin 9 by releasing, and 8 upper surface of stripper is higher than 9 upper surface of punch-pin after the contour guarantee of set 17 discharging of discharging Certain altitude.During feeding and discharging, plate is jacked up certain altitude by floating nail 25, avoids plate from rubbing with die point portion Wipe or collide with.

This powder metallurgy answers punch die and once succeeds through die trial, and the punching size gone out complies fully with Design Requirement Drawing, punching Piece burr reaches within 0.02mm, surfacing, reaches folded inspection and requires.And the mould put into production operation after using effect it is good Good, performance is stablized, and average once to sharpen from ten thousand direct liftings of 4-5 to more than 300,000 times, mould entire life reaches 50,000,000 times More than, the service life of 5,000,000 times compared to ordinary construction mould, improve 10 times；In addition mould maintenance times reduce nearly 4/5.

Claims (3)

1. a kind of powder metallurgy fanning strip answers punch die, including multiple punch die body, the multiple punch die body includes upper mold cover board（1）、 Upper mold seat（2）, re-pack（3）, upper padding plate（4）, upper mounted plate（5）, cavity plate（6）, push plate（7）, stripper（8）, punch-pin（9）, under Fixed plate（10）, die holder（11）, ball lead（12）, it is characterised in that：It is described to re-pack（3）Upper surface is provided with countersunk head and leads to Hole, the upper mold seat（2）Re-pack bottom of chamber portion, upper padding plate（4）, upper mounted plate（5）On be provided with dnockout corresponding with countersunk head through hole Bolt through-hole, the countersunk head through hole and dnockout bolt through-hole are interior to be screwed in push plate equipped with lower end（7）On dnockout bolt（13）, it is described Dnockout bolt（13）On be cased with the contour set of dnockout（14）, the contour set of dnockout（14）Upper end, which is supported on, to re-pack（3）Lower surface, under End is supported on push plate（7）Upper surface, the upper mold seat（2）Re-pack bottom of chamber portion, upper padding plate（4）, upper mounted plate（5）On be also provided with What is corresponded beats bar via, it is described beat to be equipped with to be supported in bar via re-pack（3）With push plate（7）Between make bar（15）, institute State bottom plate（10）On be provided with stripper bolt through hole, be installed with stripper bolt from bottom to top in it（16）, the stripper bolt （16）Upper end is supported by the contour set of discharging（17）, the contour set of discharging（17）Upper end is supported on stripper（8）Lower surface, it is described The contour set of discharging（17）Length be more than stripper（8）Lower surface and bottom plate（10）The distance between upper surface, it is described to unload Expect the diameter and the contour set of discharging of bolt hole（17）Major diameter fit, and be more than stripper bolt（16）Major diameter of thread, be less than Stripper bolt（16）Head diameter, the stripper（8）Upper surface is provided with attachment screw countersunk head through hole, and the attachment screw sinks Lower end, which is installed with, in head through hole passes through the contour set of discharging（17）, it is screwed in stripper bolt（16）On attachment screw（18）, the lower die Seat（11）On be provided with spring through hole corresponding with stripper bolt through hole, the diameter of the spring through hole is more than stripper bolt（16）'s Head diameter, the infraoral of the spring through hole are cased with screw thread, screw plug are screwed with screw thread（19）, the spring through hole is interior to be equipped with branch Support is in stripper bolt（16）With screw plug（19）Between discharging spring（20）；The punch-pin（9）It is made of the split of two pieces of left and right, institute State punch-pin（9）Comb portion outer end, close to bottom plate（10）Root be equipped with the dowel for connecting each broach（21）；It is described Cavity plate（6）Surrounding by rectangle piece（22）Split forms scallop hole, each rectangle piece（22）Pass through connecting pin and upper mounted plate （5）It is fixedly connected, the cavity plate（6）Comb portion by it is multiple interval be embedded in upper mounted plate（5）On punch（23）Composition, institute State rectangle piece（22）With punch（23）Cooperatively form cavity plate（6）.

2. powder metallurgy fanning strip according to claim 1 answers punch die, it is characterised in that：The bottom plate（10）On by Mandril is installed with upwards down（24）, the mandril（24）Upper end be supported on stripper（8）Lower surface, the bottom plate（10）With Stripper（8）On be installed with termination from bottom to top and expose stripper（8）The floating nail of upper surface（25）And pin stop（26）, the floating nail （25）Upper end is bulb, the pin stop（26）Upper end is higher than floating nail（25）, the die holder（11）On be provided with respectively with Mandril（24）, floating nail（25）, pin stop（26）Corresponding through hole, through hole termination are threaded, and screw plug, mandril are screwed with screw thread （24）, floating nail（25）, pin stop（26）It is supported by spring respectively between screw plug.

3. powder metallurgy fanning strip according to claim 1 or 2 answers punch die, it is characterised in that：The punch-pin（9）, cavity plate （6）Assab of material selection Sweden ASP60, the stripper（8）Material selection perhardened steel P40, fixed plate（5）, push away Plate（7）And upper padding plate（4）Select Cr12Mo1V1, the ball lead（12）Select φ 70mm ball leads, the cavity plate （6）Punch（23）Upper mounted plate is embedded in using anaerobism gluing knot（5）It is interior.