CN107952864B - Powder metallurgy fanning strip answers punch die - Google Patents

Abstract

The present invention relates to powder metallurgy to answer stamping die, and specially powder metallurgy fanning strip answers punch die, solves 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 die holder re-packs, upper padding plate, upper mounted plate, cavity plate, push plate, stripper, punch-pin, bottom plate, lower die holder, dnockout bolt, the contour set of dnockout, play bar, stripper bolt, the contour set of discharging, rectangle piece, formed punch.Advantage: 1, push plate and the depth of parallelism that re-packs are by the contour set guarantee of dnockout, and dnockout steady and smooth does not get stuck, and dnockout bolt is not easily broken；2, stripper projecting height guarantees that discharging elastic force facilitates adjusting, and spring life is long by the contour set of discharging；3, punch-pin comb teeth is firm, does not shake；4, rectangle piece piece is reasonable, and deformation is small, and cavity plate comb portion formed 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, and specially powder metallurgy fanning strip answers punch die.

Background technique

Powder metallurgy has been obtained in the one-shot groove mould in mold manufacture and is widely applied, and is punched the service life up to hundred Ten thousand times or more.This material has high wearability, high compression strength, good harden ability, good toughness, good heat The characteristics of Treatment Stability, extraordinary temper resistance.And for stamping die multiple for large size, since powder metallurgy is in module There are problems 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 die holder 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, lower die holder 11 and ball guide post 12, the upper die holder 2 is towards upper mold Cover board 1 is provided with the chamber that re-packs on one side, and intracavitary be equipped with that re-pack re-packs 3, and described re-pack is equipped with rubber 27, institute between 3 and upper mold cover board 1 It states the bottom of chamber portion that re-packs and is provided with countersunk head through-hole, dnockout spiral shell corresponding with countersunk head through-hole is provided on the upper padding plate 4 and upper mounted plate 5 Dnockout bolt 13 is equipped in bolt via hole, the countersunk head through-hole and dnockout bolt through-hole, 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；It is inlaid with lengthening set 28 on the stripper 8, is installed with lower end in the lengthening set 28 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 Have the disadvantage that 1, work when, dnockout bolt 13 and the push plate 7 of upper mold are connected and fixed, form a widgets, punch-pin 9 and After cavity plate 6 molds, punch-pin 9 pushes 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 releasing in cavity plate 6, the turnery processing length of each dnockout bolt 13 cannot be completely the same, leads to dnockout It cannot be guaranteed that push plate 7 is horizontal after bolt 13 is connect with push plate 7, push plate 7 with re-pack 3 in blanking process discontinuity and make Push plate 7 tilts, to influence normal dnockout, there is also and gets stuck sometimes；2,13 one end of dnockout bolt is connect with push plate 7, One end, which is supported on, to re-pack on 3, and the power that is hit is larger, the case where dnockout bolt 13 is interrupted often occurs；3, when cutting edge is ground to one When determining degree and needing to shorten dnockout bolt 13, the dnockout bolt 13 of such structure is inconvenient to be truncated, can only brand-new, reprocess, safeguard It is extremely inconvenient to come；4, the stripper 8 of lower die provides stripping force by cheap rubber 27, and stability is poor, the service life is short；5, discharging The height that punch-pin 9 is stretched out in 8 upper surface of plate 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 not can guarantee；6, 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, screw 29 is caused to be easy to appear loosening in blanking process, so that spiral shell occurs Nail loosening processus aboralis, which jumps on punch-pin 9, damages cutting edge；7, further, since fanning strip design of part is complicated, sector component top has one Comb teeth is arranged, structure has certain particularity, and the cavity plate 6 and punch-pin 9 of existing multiple punch die are all made of wire cutting mode and process 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 It is very difficult when the comb portion of fit clearance and solid punch and cavity plate, cause Dies ' Blanking of low quality or die life It greatly shortens.Current existing fanning strip answer the push plate of punch die, stripper, fixed plate are all made of 45# steel normalized treatment, guarantee mould The service life of tool；Using four 60 large size ball guidance system of φ connections between upper and lower mould.This multiple punch die structure, mold punching The sanction service life, which has reached sharpening every time, can be punched ten thousand punchings of 4-5, and state can achieve 100,000 times or more when good, and die life is flat At 5,000,000 times or so, but other small rigid alloy molds that compare, die life, there are also very big gaps.And if Punching is produced in enormous quantities, and die life is still unable to fully meet the needs of production.Therefore, a kind of structurally reasonable, operation is designed Stablize, punching quality is high, the service life is long, the convenient fanning strip of maintenance and repair answer punch die be very it is necessary to.

Summary 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 Problem of low quality, die life is short, maintenance and repair is inconvenient provides a kind of structurally reasonable, 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 ontology, institute State multiple punch die ontology include upper mold cover board, upper die holder, re-pack, upper padding plate, upper mounted plate, cavity plate, push plate, stripper, punch-pin, under Fixed plate, lower die holder, ball guide post, the upper surface that re-packs are provided with countersunk head through-hole, the bottom of chamber portion that re-packs of the upper die holder, on Dnockout bolt through-hole corresponding with countersunk head through-hole is provided on backing plate, upper mounted plate, in the countersunk head through-hole and dnockout bolt through-hole It is screwed in the dnockout bolt in push plate equipped with lower end, the contour set of dnockout, the high set upper side such as described dnockout are cased on the dnockout bolt It is supported on the lower surface that re-packs, 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 die holder On be also provided with it is mutual corresponding beat bar via hole, it is described beat to be equipped in bar via hole be supported on the bar of beating to re-pack between push plate, it is described It is provided with stripper bolt through-hole on bottom plate, is inside installed with stripper bolt from bottom to top, the stripper bolt upper end, which is supported by, unloads Expect contour set, the high set upper side such as described discharging is supported on stripper lower surface, and the length of the contour set of discharging is greater than stripper The outer diameter of the distance between lower surface and bottom plate upper surface, the diameter and the contour set of discharging of the stripper bolt through-hole is matched It closes, and is greater 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, lower end is installed in the attachment screw countersunk head through-hole and passes through the contour set of discharging, the connection being screwed in stripper bolt Screw, spring through-hole corresponding with stripper bolt through-hole is provided on the lower die holder, and the diameter of the spring through-hole is greater than discharging The head diameter of bolt, the infraoral of the spring through-hole are cased with screw thread, and screw plug is screwed on screw thread, is equipped in the spring through-hole The discharging spring being supported between stripper bolt and screw plug；The punch-pin is made of the two pieces of splits in left and right, the comb teeth 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 formed punch composition, the rectangle piece and formed punch cooperatively form cavity plate.Countersunk head through-hole, interior dnockout are provided on the re-packing of upper mold Bolt is cased with the contour set of the dnockout for being supported on and re-packing 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 guaranteed by the contour set of dnockout, when cutting edge, which is ground to, to determine degree, be can guarantee and is pushed away by the mill contour set of hand-to-hand fight in tights material Plate is parallel with re-packing and uniform force, safeguards more convenient, runs more reliable.It is equipped between the stripper and fixed plate of lower die Discharging contour set is installed with stripper bolt on bottom plate, and the nut of stripper bolt is stuck on the lower surface of bottom plate, plays limit Position effect guarantees the height of the prominent punch-pin of stripper by the length of the contour set of reconditioning discharging, meanwhile, the limit of stripper bolt is also Can guarantee stripper uplink during will not have excessive upward pulling force to attachment screw, 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 It is equipped with the dowel for connecting each comb teeth 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 when 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 shape piece, reduces deformation when piece cutting on line.The comb portion of cavity plate is by multiple Every the formed punch composition of setting being embedded on upper mounted plate, 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 in the formed punch of cavity plate and the embedding groove of upper mounted plate, with punch-pin Comb portion is positioning datum, inlays the formed punch of fixed cavity plate.Such punch structure is connected firmly in punching with upper mounted plate, It solves the problems, such as that cavity plate comb portion can not be fixed surely with connecting pin, and facilitates between grinding formed punch and the cooperation of punch-pin comb portion Gap improves the quality of punching.

The invention has the following advantages that 1, upper mold push plate and the depth of parallelism that re-packs guarantee that dnockout is steadily suitable by the contour set of dnockout It freely, is not in get stuck, dnockout bolt is not easy to interrupt；2, the height of the prominent punch-pin of lower die stripper is guaranteed by the contour set of discharging, Discharging elastic force facilitates adjusting, and spring life is longer, runs smoothly reliable；3, punch-pin comb portion stable connection, when punching, will not shake It is dynamic, improve punching quality；4, the rectangle piece of cavity plate optimizes piece position, and L shape piece is avoided to deform, and cavity plate comb portion rushes Head is connected firmly, and convenient for grinding fit clearance, improves punching quality, extends die life.

Detailed description of the invention

Fig. 1 is schematic structural view of the invention；

Fig. 2 is existing multiple punch die dnockout structural schematic 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 board, 2- upper die holder, 3- re-pack, 4- upper padding plate, 5- upper mounted plate, 6- cavity plate, 7- push plate, 8- Stripper, 9- punch-pin, 10- bottom plate, 11- lower die holder, 12- ball guide post, 13- dnockout bolt, the contour set of 14- dnockout, 15- makes bar, 16- stripper bolt, the contour set of 17- discharging, 18- attachment screw, 19- screw plug, 20- discharging spring, 21- dowel, 22- rectangle piece, 23- formed punch, 24- mandril, the floating nail of 25-, 26- pin stop, 27- rubber, 28- lengthen set, 29- screw.

Specific embodiment

Powder metallurgy fanning strip answers punch die, including multiple punch die ontology, and the multiple punch die ontology 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, lower die holder 11, rolling Pearl guide post 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 die holder 2, upper padding plate 4, upper fixation It is provided with dnockout bolt through-hole corresponding with countersunk head through-hole on 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 is cased with the contour set 14 of dnockout, the contour 14 upper end branch of set of dnockout on 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 die holder 2, upper padding plate 4, upper fixation for support Also is provided on plate 5 it is mutual corresponding beat bar via hole, it is described beat to be equipped with to be supported on to re-pack in bar via hole make bar between 3 and push plate 7 15, stripper bolt through-hole is provided on the bottom plate 10, is inside installed with stripper bolt 16, the stripper bolt 16 from bottom to top Upper end is supported by the contour set 17 of discharging, and contour 17 upper end of set of discharging is supported on 8 lower surface of stripper, the contour set of discharging 17 length is greater 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 it is greater 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 in the attachment screw countersunk head through-hole across discharging Contour set 17, the attachment screw 18 being screwed in stripper bolt 16 are provided on the lower die holder 11 corresponding with stripper bolt through-hole Spring through-hole, the diameter of the spring through-hole are greater than the head diameter of stripper bolt 16, and the infraoral of the spring through-hole is cased with Screw thread is screwed with screw plug 19 on screw thread, is equipped with the discharging bullet being supported between stripper bolt 16 and screw plug 19 in the spring through-hole Spring 20；The punch-pin 9 is made of the two pieces of splits in left and right, the comb portion outer end of the punch-pin 9, and the root close to bottom plate 10 is set There is the dowel 21 for connecting each comb teeth；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 Formed punch 23 form, the rectangle piece 22 cooperatively forms cavity plate 6 with formed punch 23.

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 is installed with end on the bottom plate 10 and stripper 8 from bottom to top and exposes the floating of 8 upper surface of stripper 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 lower die holder Through-hole corresponding with mandril 24, floating nail 25, pin stop 26 respectively is provided on 11, through-hole end is threaded, is screwed on screw thread Screw plug is supported by spring between mandril 24, floating nail 25, pin stop 26 and screw plug respectively.Mandril 24 is that stripper 8 provides rebound Power, pin stop 26 are used to position plate when feeding, and floating nail 25 jacks up plate in feeding and discharging, avoids sending out with cutting edge Raw friction is collided with, and above structure makes mold be more applicable for automation punching processing operation.

The punch-pin 9, cavity plate 6 Assab, 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 guide post 12 selects φ 70mm ball guiding The formed punch 23 of column, the cavity plate 6 is 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 harden ability, good heat treatment stability and extraordinary temper resistance；Punch and matrix is set to exist It is in " zero stress " state in use process, greatly improves die life.It is required according to product batch, by analyzing mold The factors such as the design feature of major part and blanking pressure determine 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, guarantee the stability of mould structure.Using φ 70mm ball guide post substitutes existing 60 ball guide post of φ, guarantees that mould structure is relatively reliable, lathe reason is avoided to cause The improper damage of mold.Formed punch is inlayed using anaerobism gluing knot, is more convenient disassembly replacement when the punch is damaged.

In use, autoloader push plate enters laterally, pin stop 26 positions plate, and cavity plate 6 is transported downwards It is dynamic, push stripper 8 to move down, the stripper 8 lower contour set 17 of pressure discharge, stripper bolt 16 compress 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-packing 3 moves upwards, and re-pack 3 compression rubbers 27, punch-pin 9 and cavity plate 6 cooperate, and are punched out fanning strip using cutting edge.Then cavity plate 6 moves upwards, rubber 27 rebound supports, which re-pack, 3 to be moved down, and the contour set 14 of dnockout guarantees push plate 7 and re-pack 3 to move in parallel and uniform force, will be embedded in Fanning strip in cavity plate 6 is hit down.Meanwhile mandril 24, stripper bolt 16, the contour set 17 of discharging push stripper 8 to move up, it will 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 set 17 of discharging guarantees discharging Certain altitude.During feeding and discharging, plate is jacked up certain altitude by floating nail 25, and plate is avoided to rub with die point portion It wipes or collides 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 mold put into production operation after using effect it is good Good, performance is stablized, and average primary sharpening is directly promoted to 300,000 times or more from 4-5 ten thousand times, and mold entire life reaches 50,000,000 times More than, the service life of 5,000,000 times compared to ordinary construction mold, improve 10 times；In addition mold maintenance times reduce nearly 4/5.

Claims (2)

1. a kind of powder metallurgy fanning strip answers punch die, including multiple punch die ontology, the multiple punch die ontology include upper mold cover board (1), Upper die holder (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), lower die holder (11), ball guide post (12), it is characterised in that: it is logical that described (3) upper surface that re-packs is provided with countersunk head Hole, the bottom of chamber portion that re-packs of the upper die holder (2), upper padding plate (4) are provided with dnockout corresponding with countersunk head through-hole on upper mounted plate (5) It is equipped with lower end in bolt through-hole, the countersunk head through-hole and dnockout bolt through-hole and is screwed in the dnockout bolt (13) on push plate (7), it is described The contour set of dnockout (14) is cased on dnockout bolt (13), the contour set of dnockout (14) upper end is supported on (3) lower surface that re-packs, under End is supported on push plate (7) upper surface, and the bottom of chamber portion that re-packs of the upper die holder (2), upper padding plate (4), upper mounted plate are also provided on (5) It is mutual corresponding to beat bar via hole, it is described beat to be equipped with to be supported on to re-pack (3) in bar via hole beat bar (15), institute between push plate (7) It states and is provided with stripper bolt through-hole on bottom plate (10), be inside installed with stripper bolt (16), the stripper bolt from bottom to top (16) upper end is supported by the contour set of discharging (17), and the contour set of discharging (17) upper end is supported on stripper (8) lower surface, described The length of the contour set of discharging (17) is greater than the distance between stripper (8) lower surface and bottom plate (10) upper surface, described to unload Expect the diameter of bolt hole and the major diameter fit of the contour set of discharging (17), and be greater than the major diameter of thread of stripper bolt (16), is less than The head diameter of stripper bolt (16), stripper (8) upper surface are provided with attachment screw countersunk head through-hole, and the attachment screw is heavy Lower end, which is installed with, in head through-hole passes through the contour set of discharging (17), the attachment screw (18) being screwed on stripper bolt (16), the lower die Spring through-hole corresponding with stripper bolt through-hole is provided on seat (11), the diameter of the spring through-hole is greater than stripper bolt (16) Head diameter, the infraoral of the spring through-hole are cased with screw thread, are screwed on screw thread screw plug (19), and branch is equipped in the spring through-hole Support the discharging spring (20) between stripper bolt (16) and screw plug (19)；The punch-pin (9) is made of the two pieces of splits in left and right, institute The comb portion outer end of punch-pin (9) is stated, the dowel (21) for connecting each comb teeth is equipped with close to the root of bottom plate (10)；It is described The surrounding of cavity plate (6) forms scallop hole by rectangle piece (22) split, and each rectangle piece (22) passes through connecting pin and upper mounted plate (5) it is fixedly connected, the comb portion of the cavity plate (6) is made of multiple formed punches (23) being embedded on upper mounted plate (5) that are spaced, institute It states rectangle piece (22) and formed punch (23) and cooperatively forms cavity plate (6)；It is installed with mandril from bottom to top on the bottom plate (10) (24), the upper end of the mandril (24) is supported on stripper (8) lower surface, on the bottom plate (10) and stripper (8) by It is installed with floating nail (25) and pin stop (26) that stripper (8) upper surface is exposed in end upwards down, described floating nail (25) upper end is Bulb, pin stop (26) upper end are higher than floating nail (25), be provided on the lower die holder (11) respectively with mandril (24), floating nail (25), the corresponding through-hole of pin stop (26), through-hole end are threaded, and screw plug, mandril (24), floating nail are screwed on screw thread (25), it is supported by spring respectively between pin stop (26) and screw plug.

2. powder metallurgy fanning strip according to claim 1 answers punch die, it is characterised in that: the punch-pin (9), cavity plate (6) Assab, material selection Sweden ASP60, stripper (8) the material selection perhardened steel P40, fixed plate (5), push plate (7) and upper padding plate (4) selects Cr12Mo1V1, and the ball guide post (12) selects φ 70mm ball guide post, the cavity plate (6) formed punch (23) is embedded in upper mounted plate (5) using anaerobism gluing knot.