CN101817052B - Multi-stage female die returning jolting machine and operating method - Google Patents

Multi-stage female die returning jolting machine and operating method Download PDF

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Publication number
CN101817052B
CN101817052B CN2010101247501A CN201010124750A CN101817052B CN 101817052 B CN101817052 B CN 101817052B CN 2010101247501 A CN2010101247501 A CN 2010101247501A CN 201010124750 A CN201010124750 A CN 201010124750A CN 101817052 B CN101817052 B CN 101817052B
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China
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die
thimble
furniture
display
goods
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CN2010101247501A
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CN101817052A (en
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杨东佐
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Guangzhou CCM Electrical Appliance Co., Ltd.
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杨东佐
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00Forging presses
    • B21J9/02Special design or construction
    • B21J9/06Swaging presses; Upsetting presses
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21GMAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G3/00Making pins, nails, or the like
    • B21G3/12Upsetting; Forming heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00Forging presses
    • B21J9/02Special design or construction
    • B21J9/022Special design or construction multi-stage forging presses

Abstract

The invention discloses a multi-stage female die returning jolting machine and an operating method. A female die component of the jolting machine comprises a rotatable die holder and female dies; the female dies are two more than punch dies, and comprise the female die at a feeding position, the female die at a discharging position and the female dies which are at molding positions and correspond to the punch dies one to one; a blank pushing mechanism is arranged on one side, of the punch die, corresponding to the female die at the feeding position; a large sliding block on one side of the punch die is provided with a clearance material shearing and clamping mechanism and a clearance space of the blank pushing mechanism; and a discharge clearance position produced when a work piece is ejected out is arranged at the corresponding discharging position. The operating method comprises that: the female dies rotate from the female die at the feeding position to the female des at the molding position and the discharging position. The multi-stage female die returning jolting machine and the operating method have the advantages of greatly improving working efficiency because feeding and discharging do not need to take work piece jolting and molding time, and overcoming worldwide difficulties, difficult to overcome for long, in the jolting of some specially long work pieces because the feeding and discharging have nothing to do with the stroke of motion of the punch dies.

Description

A kind of multi-stage female die returning jolting machine and method of work
Technical field
The present invention relates to a kind of multi-stage female die returning jolting machine and method of work, particularly relate to a kind of multi-stage female die returning jolting machine and method of work that is used for standard components such as high-speed molding securing member.
Background technology
Existing upsetter, the general and fuselage of die is fixed, the transposition of inter process be by drift move back and forth or feeding clip mechanism such as clamp is clamped to another die with blank from a die and realizes.This upsetter, complex structure is difficult for realizing the high speed upsetting especially.In order to solve the problem of high speed upsetting; The patent No. is in the patent of invention of ZL87105260.1; A kind of multistation die-revolving high-speed upsetter is disclosed; This invention provides the die more than at least three on the revolution die socket, will adorn and the same number of punch die corresponding with the die of die socket on the slide block.The multi-stage female die returning jolting machine of this disclosure of the Invention comprises the cold nail hitting head machinery of the two drifts HC that its disclosed in the prior art West Germany west Glan company produces, and the number of die is identical with the number of punch die.Therefore the die of feed entrance point is same die with the die of shaping position for the first time, and the die of the die of discharging position and the last shaping position of workpiece is same die.Blank by cut material level put be clamped to feed entrance point before; Punch die needs greater than the certain distance of Workpiece length to the stroke that moves away from the direction of die; And then blank put and be clamped to feed entrance point by cutting material level, the punch die by the moulding first time pours the moulding of upsetting for the first time in the die with blank again.When workpiece ejected, punch die needed to reset and its movement travel needs the length greater than workpiece to the direction away from die.Existing this upsetter, because the die in feed entrance point and discharging position all is used for moulding, charging and discharging all need take the time of workpiece upsetting moulding on the one hand, have influenced operating efficiency; The more important thing is; During the long workpiece of existing upsetter such as upsetting 100mm, in order enough chargings to be arranged and to go out material space, the essential certain distance of length of the stroke of punch die above workpiece; The stroke of general punch die needs 145mm-155mm; The operating rate that this not only greatly reduces upsetter has increased the stroke wearing and tearing of big slide block and the motion power consumption of machine, and has increased the volume and the cost of upsetter equipment greatly; For some long especially workpiece of upsetting, be the insoluble technical barrier of this existing upsetter.
Summary of the invention
First purpose of the present invention is to provide a kind of multi-stage female die returning jolting machine of realizing the high speed upsetting, being easy to upsetting farm labourer part.
Second purpose of the present invention is to provide a kind of method of work that realizes the high speed upsetting, is easy to the multi-stage female die returning jolting machine of upsetting farm labourer part.
A kind of multi-stage female die returning jolting machine comprises big slide block, is fixed on the die assembly on the big slide block, the big slide block driving mechanism that big slide block is moved back and forth; The die assembly; Cut feed collet material mechanism, the workpiece ejecting mechanism makes die rotate the die indexing means of desired location; The die positioner that die is stopped at desired location, material jacking mechanism; The die assembly only comprises the die socket of support rotation relatively, circumferentially is evenly distributed on the die more than two or two in the die socket along die; The number of die manys two than the number of punch die, comprises die and shaping position and the punch die die one to one of die, the discharging position of feed entrance point; Die position in the corresponding charging of punch die one side is provided with the blank propulsive mechanism in the die that blank is advanced feed entrance point, on the big slide block of punch die one side, is provided with empty avoiding and cuts the empty avoiding space of feed collet material mechanism, blank propulsive mechanism, corresponding discharging position and be provided with the discharging clearance position of workpiece when ejecting.Be equipped with the die and corresponding clearance position that is not used in moulding at feed entrance point and discharging position; On the one hand when die socket stops operating; Be clamped to feed entrance point simultaneously and advanced in the die of feed entrance point by the blank propulsive mechanism by the blank cut off, the workpiece in the die of discharging position is ejected by the workpiece ejecting mechanism simultaneously, so charging and discharging need not take the time of workpiece upsetting moulding; Can realize that upsetting, charging and discharging work carries out simultaneously, improve operating efficiency greatly; The more important thing is; During the long workpiece of existing upsetter such as upsetting 100mm, in order enough chargings to be arranged and to go out material space, the essential certain distance of length of the stroke of punch die above workpiece; The stroke of general punch die needs 145mm-155mm; The operating rate that this not only greatly reduces upsetter has increased the stroke wearing and tearing of big slide block and the motion power consumption of machine, and has increased the volume and the cost of upsetter equipment greatly; For some long especially workpiece of upsetting, be the insoluble technical barrier of existing upsetter always; And the upsetter of present technique scheme; It doesn't matter in the movement travel of charging and discharging and punch die; No matter the workpiece that upsetting 3mm or 3000mm are long; The stroke of general punch die only need satisfy the upsetting of workpiece head, just about 25mm-40mm just, the problem of the discharging workpiece of can wounding when also having avoided existing upsetter because of the route problem upsetting; The volume and the cost of the upsetter equipment when greatly reducing upsetting farm labourer part have simultaneously solved the industry world-famous puzzle of some long especially workpiece of the insoluble upsetting of existing for a long time upsetter.
As first kind of improvement of scheme one, the blank propulsive mechanism comprises the pusher cam, the pusher cam drive mechanism; One end can with the pusher goods of furniture for display rather than for use of pusher cam butt, be fixed on the gear shaft on the pusher goods of furniture for display rather than for use other end, be fixed on the pusher cylindrical gear on the gear shaft; Charging ram, pusher goods of furniture for display rather than for use back-moving spring is provided with the driving cog with the engagement of pusher cylindrical gear on charging ram; Pusher goods of furniture for display rather than for use back-moving spring one end is connected on the pusher goods of furniture for display rather than for use, and an end is connected on the body.When big slide block drove punch die towards die motion upsetting workpiece, charging ram can advance the blank of cutting feed collet material mechanisms grip in the die of feed entrance point simultaneously to the die motion of feed entrance point.The movement travel of charging ram is generally different with the movement travel of big slide block; When the length of workpiece is longer; The movement travel of charging ram must be greater than charge length, and blank is pushed into the position that die is set, and the upsetting that the stroke of big slide block only need be realized the workpiece head just.
As second kind of improvement of scheme one, the die assembly driving mechanism comprises bent axle, is installed in the connecting rod on the bent axle, the big slide block that articulates rotationally with connecting rod; The discharging clearance position is the avoiding hollow groove that is arranged on corresponding discharging position and feed entrance point on the slide block; The blank propulsive mechanism comprises the pusher cam; The pusher cam drive mechanism; One end can with the first pusher goods of furniture for display rather than for use of pusher cam butt, be fixed on the second pusher goods of furniture for display rather than for use axle on the first pusher goods of furniture for display rather than for use other end, be fixed on the second pusher goods of furniture for display rather than for use on the second pusher goods of furniture for display rather than for use axle; Charging ram, pusher goods of furniture for display rather than for use back-moving spring; On charging ram, be provided with the second pusher goods of furniture for display rather than for use containing hole, the second pusher goods of furniture for display rather than for use inserts in the pusher goods of furniture for display rather than for use containing hole away from an end of the second pusher goods of furniture for display rather than for use axle, and pusher goods of furniture for display rather than for use back-moving spring one end is connected on the pusher goods of furniture for display rather than for use, and an end is connected on the body.When big slide block drove punch die towards die motion upsetting workpiece, charging ram can advance the blank of cutting feed collet material mechanisms grip in the die of feed entrance point simultaneously to the die motion of feed entrance point.The movement travel of charging ram is generally different with the movement travel of big slide block; When the length of workpiece is longer; The movement travel of charging ram must be greater than charge length, and blank is pushed into the position that die is set, and the upsetting that the stroke of big slide block only need be realized the workpiece head just.
As the common improvement of scheme one to three, material jacking mechanism comprises that an end is installed in the die and die thimble one to one, and the other end of thimble is carried out the spacing abutment of spacing thimble of keeping out; Only be provided with the workpiece ejecting mechanism, but the workpiece ejecting mechanism comprises the knock-pin of top thimble in the die position that workpiece is ejected; Spacing abutment of thimble and die socket or body are fixed, and the position of corresponding knock-pin is provided with emptiness avoiding hole on the spacing abutment of thimble, and knock-pin is towards the external diameter of the emptiness avoiding hole one end aperture less than emptiness avoiding hole.Because the spacing abutment of thimble and die socket or body are fixed, so thimble do not have relative motion with respect to die socket and rotates synchronously with die socket in the process that die socket rotates, when upsetting; The spacing abutment of thimble is kept out spacing to thimble; Do not need the thimble in corresponding each die all to design the workpiece ejecting mechanism that moves back and forth, only need the workpiece ejecting mechanism to be set, make upsetter simple in structure in the discharging position; Debugging is easily simple, and cost is low; Particularly in the die socket rotary course, thimble need not separate with die socket, shortens the movement travel of the thimble of knowing clearly greatly, has guaranteed that thimble ejects the smooth and easy of blank, has improved the operating efficiency and the service life of thimble, is easier to realize quick upsetting.
As improvement, also be provided with the spacing abutment guiding mechanism of thimble of the distance between adjustment spacing abutment of thimble and the die socket; Be provided with and the fixing lead of die socket in the side of die socket away from die assembly; The position of corresponding each thimble is provided with chute on lead; Friction slip is installed in chute, and thimble contacts with friction slip away from an end of die socket and is kept out spacing by it; Spacing abutment of thimble and body are fixed, and the face that friction slip contacts with the spacing abutment of thimble is greater than the aperture of emptiness avoiding hole, and friction slip contacts with the spacing abutment of thimble and kept out by the spacing abutment of thimble away from an end of thimble.The spacing abutment guiding mechanism of thimble is adjusted the position of thimble in die through the distance between adjustment spacing abutment of thimble and the die socket; When the workpiece of the upsetting different length that the section diameter of moulding is identical in die; Need not change thimble and die; Once adjustment just mixes up the thimble position in all dies; Overcome shortcomings such as the present adjustment respectively of each station of multistation upsetter, complex structure, debugging bother, take time and effort, improved operating efficiency, reduced equipment cost.In the process of die socket rotation, thimble and friction slip are static with respect to die socket, rotate with die socket, and spacing abutment of thimble and body fixed static are motionless.Owing to increased the friction slip structure, in rotary course, the spacing abutment of the relative thimble of friction slip has relative fricting movement; Thimble does not have relative motion to friction slip; The frictional force that its contact-making surface produced when the spacing abutment of the relative thimble of die socket rotatablely moved acts on the slide block, and does not act on the thimble, so thimble is not allowed easily broken; The assurance die socket can be realized rotation at a high speed, the service life of having improved thimble.
As further improvement; The spacing abutment guiding mechanism of thimble comprises and the fixing adjustment post of the spacing abutment of thimble; Pass first adjustment part and second adjustment part, first bolt and two first adjustment nuts of adjustment post, be installed on first bolt and place first adjustment part and second adjustment part between stage clip; First adjustment part and body near die socket are fixed; The adjustment post and the first adjustment part matched in clearance; Second adjustment part away from die socket is fixed with the adjustment post; One end of first bolt is fixed on first adjustment part, the other end of first bolt pass second adjustment part and with the second adjustment part matched in clearance, the adjustment nut is installed on first bolt and places the side of second adjustment part away from first adjustment part.This adjustment structural adjustment thimble is very convenient during with respect to the position of die socket, only needs two adjustment of adjustment nuts just can adjust the position of whole thimbles, needs adjustment respectively to compare with the thimble of each station of present multistation upsetter, and adjustment is very convenient.
As another improvement, the spacing abutment guiding mechanism of thimble only comprise rotatable can not axially movable second bolt, stop collar; On body, be provided with the pilot hole of the spacing abutment of thimble, between pilot hole and the spacing abutment of thimble, be provided with the rotation preventive mechanism that prevents that the relative body of the spacing abutment of thimble from rotating, matched in clearance between spacing abutment of thimble and pilot hole; Second bolt is the rotation bare terminal end away from an end of die socket, is provided with positive stop lug boss at second bolt near the rotation bare terminal end, and second bolt is the end of thread near an end of die socket; Stop collar and body are fixed, and in stop collar, are provided with the shoulder hole that cooperates with second bolt and positive stop lug boss, and the macropore of shoulder hole is towards die socket one side; The end of thread of second bolt passes the spacing abutment of thimble, the spacing abutment threaded engagement of second bolt and thimble.This adjustment architecture is simple, and is convenient during the position of adjustment thimble relative die socket.
As the improvement of scheme four, spacing abutment of thimble and die are fixed; Outside each thimble, be with back-moving spring, back-moving spring places between thimble and die socket; The position of corresponding each thimble is provided with emptiness avoiding hole on the spacing abutment of thimble, and thimble is towards the external diameter of the emptiness avoiding hole one end aperture greater than emptiness avoiding hole, when each die rotates to the discharging position, and workpiece ejecting mechanism top thimble, thimble ejects the workpiece in the die.In the process of die socket rotation, the spacing abutment of thimble and thimble is rotated together, makes the structure of upsetter simpler.
As the common improvement of scheme one to three, the thickness of die socket and die is identical, need to equal the length of the workpiece of moulding in die; Only be provided with the workpiece ejecting mechanism, but the workpiece ejecting mechanism comprises the knock-pin of top thimble in the die position that workpiece is ejected; The moulding hole quilt of shaping workpiece is kept out with the fixing spacing abutment of workpiece of body in the die, on the spacing abutment of workpiece, is provided with the emptiness avoiding hole of knock-pin.Need length of the workpiece of moulding in die is identical with the thickness of die and die socket, in die, is not provided with thimble, therefore in the die socket rotation, does not relate to the problem that thimble separates with die socket, makes the simple in structure of abutment.When the upsetter upsetting, the knock-pin of workpiece ejecting mechanism stretches in the workpiece abutment and with the end face of die and contacts.Can be provided with inside chamfering at the forming cavity of die away from a side of punch die, avoid workpiece when moulding, to get between die and the workpiece ejection piece, make workpiece be difficult to eject.
As the common improvement of scheme one to three, the die positioner comprises the first goods of furniture for display rather than for use driving shaft, the driving mechanism of the first goods of furniture for display rather than for use driving shaft; Be fixed on first goods of furniture for display rather than for use on the first goods of furniture for display rather than for use driving shaft; With the second fixing goods of furniture for display rather than for use axle of body, only be articulated in second goods of furniture for display rather than for use on the second goods of furniture for display rather than for use axle rotationally, backstay; With the fixing backstay guide pin bushing of body, second back-moving spring; Backstay comprises two small ends; Small end towards die socket stretches in the die socket; Pass guide pin bushing and on this small end, be provided with the installing hole of second goods of furniture for display rather than for use away from the small end of die socket; Second back-moving spring is installed between guide pin bushing and backstay, and an end of second goods of furniture for display rather than for use stretches in the installing hole of guide pin bushing, the other end of second goods of furniture for display rather than for use can with the first goods of furniture for display rather than for use butt.When the driving force that die socket need stop and not adding, backstay stretches in the die socket under the effect of second back-moving spring, can overcome effect of inertia and make die socket can rest on desired location accurately and reliably.When die socket need rotate, backstay separated with die socket under the effect of the driving force of driving mechanism.
As the common improvement of scheme one to three, the die indexing means comprises first driving cog that is arranged on the die socket border, is provided with the disk of second driving cog that meshes with first driving cog, the disk driving mechanism of driver plate rotation; The shared disk girth of second driving cog is disk girth and die number ratio.Be employed in the die indexing means that operative gear is set on the disk, simple and reliable for structure.
Common improvement as scheme one to three; Outside die socket, be provided with the die holder; Be provided with spacing first end cap and second end cap in die case of die socket at the two ends of die socket; First end cap is near die assembly, and first end cap is fixed on the die holder, and second end cap is fixed on the die socket and is limited in the die holder; Be provided with the empty avoiding through hole of empty avoiding disk in the position of the corresponding disk of die holder.First end cap and second end cap are only spacing rotationally in the die holder with die socket simple and reliablely.
As the common improvement of scheme one to three, cut feed collet material mechanism, comprise and cut the material bar; The reciprocating material bar driving mechanism of cutting of material bar is cut in driving; Be fixed on and cut cutting the material cutter and cutting the feeding clip mechanism that the material cutter cooperates the clamping blank on the material bar, feeding clip mechanism comprises clip feed blade; Cut the holding part that material cutter and clip feed blade complement each other to form the clamping blank, make clip feed blade expect that cutter opens, puts blank and opens mechanism at the clip feed blade of desired location with cutting; Also be provided with make clip feed blade cut relatively the material cutter reset closed form the holding part of clamping blank, the spacing resetting-mechanism of the feeding clip mechanism of restriction clip feed blade motion in the process that blank is cut off; At feed entrance point, the holding part of clamping blank is along the diameter of the width of cutting the material cutter direction of motion greater than blank; Put cutting material level, clip feed blade is cut the material cutter relatively and is kept fixing, and the holding part of clamping blank does not change.Cutting material level is changed to from cutting material cutter and clip feed blade and acts on blank and make the blank generation be deformed to blank to be cut off residing position, residing position in the process that promptly blank is cut off.In the process that blank is cut off, clip feed blade is cut the material cutter relatively and is kept fixing fully, and promptly the holding part of clamping blank does not change; Like this in the process that blank is cut off; Can deflection with rock, therefore make the bottom of the blank of being cut off smooth, be equal to the effect that wholecircle is cut.Because smooth by the blank cut off bottom, when being sent to subsequent processing upsetting moulding, make the dynamic balance that acts on the blank, during moulding blank can deflection with rock, the good and precision height of the Forming Quality of workpiece, defect rate is low; To the big workpiece of need distortion, be difficult for causing blank to be filled in mold cavity sometimes here, be filled in mold cavity sometimes again over there, more help reduction in the numbers of seconds; And the workpiece tail end face that upsetting is come out is smooth.Because in the process that blank is cut off, clip feed blade with cut the material cutter and can realize clamping fully blank, what therefore be fit to long blank cuts the feed collet material.
A kind of method of work of multi-stage female die returning jolting machine, method of work comprises:
Die is rotated to the die of shaping position, the die of discharging position by the die of feed entrance point; After rotating to the die of its adjacent position; After promptly rotating the angle of 360 °/die number, stop operating at desired location at die positioner and the recessed die holder of die indexing means acting in conjunction; In the process of die socket rotation, realize in the die workpiece from last operation backward the transmission of an operation and the die of discharging position move to feed entrance point, the die of feed entrance point moves to shaping position; Die socket stops; The blank that the blank propulsive mechanism will be clamped to feed entrance point advances in the die of feed entrance point; Workpiece in the corresponding die carries out the upsetting moulding to punch die to die direction motion and to it, and the workpiece ejecting mechanism will eject that in type workpiece ejects in the die of position; After blank propulsive mechanism, punch die and ejecting mechanism are accomplished corresponding actions and are resetted, rotate the angle of 360 °/die number again at the acting in conjunction lower cavity die of die detent mechanism and die indexing means, so circulate.
The invention has the beneficial effects as follows at feed entrance point and discharging position and be equipped with the die and corresponding clearance position that is not used in moulding; Charging and discharging need not take the time of workpiece upsetting moulding on the one hand; Can realize that upsetting, charging and discharging work carries out simultaneously, improve operating efficiency greatly; The more important thing is; It doesn't matter in the movement travel of charging and discharging and punch die; The upsetting that the stroke of general punch die only needs to realize the workpiece head just; Avoided existing upsetter because of can the wound problem of discharging workpiece of route problem, the volume and the cost of the upsetter equipment when greatly reducing upsetting farm labourer part have simultaneously solved some industry world-famous puzzles of long workpiece especially of the insoluble upsetting of existing for a long time upsetter.
Description of drawings
Fig. 1 is the schematic perspective view that the multi-stage female die returning jolting machine of the embodiment of the invention 1 removes body, flywheel etc.
Fig. 2 is the schematic perspective view of Fig. 1 from another direction projection.
Fig. 3 is the schematic perspective view that part-structure only is shown of the embodiment of the invention 1.
Fig. 4 is the perspective exploded view that part-structure only is shown of the embodiment of the invention 1.
Fig. 5 is the perspective exploded view of cutting feed collet material mechanism of the embodiment of the invention 1.
Fig. 6 is the schematic perspective view that part-structure only is shown of the embodiment of the invention 2.
Fig. 7 is the schematic perspective view that part-structure only is shown of the embodiment of the invention 3.
Fig. 8 is the schematic perspective view that part-structure only is shown of the embodiment of the invention 4.
Fig. 9 is the sketch map that Fig. 8 shows dotted line.
The specific embodiment
Embodiment 1
To shown in Figure 4, a kind of multi-stage female die returning jolting machine comprises die assembly like Fig. 1; The die assembly driving mechanism that the relative die assembly of die assembly is moved back and forth, the die assembly is cut feed collet material mechanism; Only be arranged on the workpiece ejecting mechanism of discharging position; Make the die indexing means of die rotation set angle, the die positioner that die is stopped at desired location, material jacking mechanism.
The die assembly driving mechanism comprises bent axle 1, is installed in the connecting rod 2 on the bent axle 1, the big slide block 3 that articulates rotationally with connecting rod 2.Die assembly comprises the die shoe 4 that is fixed on the big slide block 3, and three punch dies that evenly are fixed on the die shoe 4 are punch die 5, punch die 72, punch die 73.
The die assembly comprises the die holder 6 that is fixed on the body; Be installed in the die case 7 that die holder interior 6 and die holder 6 are fixed; Be installed in rotation on the die socket 8 in the die case 7; Be fixed on five dies in the die socket 8 along circumferentially evenly distributing of die socket, the angle of the central axis line of the central axis of adjacent die and die socket is 72 °.With die socket 8 spacing first end cap 10 and second end caps 11 in die case 7.Die holder 6 away from a side of punch die also be provided with fixing base 12, the first end caps 10 of body near punch die, first end cap 10 is fixed on the die holder 6, second end cap 11 is fixed on the die socket 8 and is spacing in die holder 6 by base 12.
The number of die manys two than the number of punch die, comprise the corresponding die 9 of die 76 and shaping position and the punch die 5 of a die 77, discharging position of feed entrance point, with corresponding three dies 74 of punch die 72, three dies 75 corresponding with punch die 73; Die 77 at the corresponding feed entrance point of punch die one side is provided with the blank propulsive mechanism in the die that blank is advanced feed entrance point, and corresponding discharging position is provided with the discharging clearance position of workpiece when ejecting on big slide block 3.The discharging clearance position is the avoiding hollow groove 44 that is arranged on corresponding discharging position and feed entrance point on the slide block 3.The blank propulsive mechanism comprises the pusher cam 52 that is fixed on the bent axle 1; One end can with the roller 54 of pusher cam 52 butts, pusher goods of furniture for display rather than for use 53 is fixed on the gear shaft 55 on the pusher goods of furniture for display rather than for use 53; Be fixed on the pusher cylindrical gear 56 on the gear shaft 55; Charging ram 57, pusher goods of furniture for display rather than for use back-moving spring 58 is provided with the driving cog 59 with 56 engagements of pusher cylindrical gear on charging ram 57.Pusher goods of furniture for display rather than for use back-moving spring 58 1 ends are connected on the pusher goods of furniture for display rather than for use 53, and an end is connected on the body.Roller 54 is installed in the end of pusher goods of furniture for display rather than for use 53, and gear shaft 55 is fixed on the other end of pusher goods of furniture for display rather than for use 53.
The die positioner comprises the driving mechanism of the first goods of furniture for display rather than for use driving shaft, 13, the first goods of furniture for display rather than for use driving shafts 13, is fixed on first goods of furniture for display rather than for use 14 on the first goods of furniture for display rather than for use driving shaft 13; Be fixed on the fixed block 15 on first goods of furniture for display rather than for use 14, the push rod 16 on the holder fixed block 15 is with the second fixing goods of furniture for display rather than for use axle (not shown) of body; Only be articulated in second goods of furniture for display rather than for use 17 on the second goods of furniture for display rather than for use axle rotationally; Backstay 18 is with fixing backstay guide pin bushing 19, the second back-moving springs 20 of body; Backstay 18 comprises two small ends; Small end towards die socket 8 stretches in the die socket 8; The installing hole 21 that passes guide pin bushing 19 and on this small end, be provided with away from the small end of die socket 8; Second back-moving spring 20 is installed in 18 of guide pin bushing and backstays, and an end of second goods of furniture for display rather than for use 17 stretches in the installing hole 21 of backstay 18, the other end of second goods of furniture for display rather than for use 17 can with push rod 16 butts.The driving mechanism of the first goods of furniture for display rather than for use driving shaft 13 comprises first travelling gear 22 that is fixed on the bent axle 1; Second travelling gear 23 with 22 engagements of first travelling gear is fixed on first power transmission shaft 24 (two) on second travelling gear 23, is fixed on first bevel gear 25 on first power transmission shaft 24; Second bevel gear 26 with 25 engagements of first bevel gear; Be fixed on second power transmission shaft 27 on second bevel gear 26, be fixed on the third hand tap gear 28 on second power transmission shaft 27, with the 4th bevel gear 29 of third hand tap gear 28 engagements; Be fixed on the 3rd power transmission shaft 30 on the 4th bevel gear 29, be fixed on first cam 31 on the 3rd power transmission shaft 30.Side at first goods of furniture for display rather than for use 14 is equipped with first roller, 32, the first cams 31 and first roller, 32 butts.
The workpiece ejecting mechanism comprises second cam 33 that is fixed on the 3rd power transmission shaft 30; Be fixed on the 3rd goods of furniture for display rather than for use 34 on the first goods of furniture for display rather than for use driving shaft 13, be installed in second roller 35 on the 3rd goods of furniture for display rather than for use 34, be fixed on the push rod 35 on the 3rd goods of furniture for display rather than for use 34; Can with the push rod 36 of push rod 35 butts; With body stationary sleeve 37, can with the knock-pin 38 of push rod 36 butts, the thimble 39 of knock-pin 38 butt discharging positions.One end of push rod 36 and knock-pin 38 stretches into respectively in the sleeve 37.On the 3rd push rod 36, be with back-moving spring, back-moving spring 60 places 36 of sleeve 37 and push rods.
Extend away from a side of die at second end cap 11 and to be provided with lead 41, the position of corresponding each thimble 39 is provided with chute 42 on lead 41.
Material jacking mechanism comprises that an end is installed in the die and die thimble 39 one to one; Be installed in the friction slip 43 in the chute 42, friction slip 43 carried out the spacing abutment guiding mechanism of thimble of the distance between the spacing abutment of spacing thimble of keeping out 40, the adjustment spacing abutment 40 of thimble and the die socket 8; Thimble 39 contacts with friction slip 43 away from an end of die socket 8 is kept out spacing by friction slip 43; Friction slip 43 contacts by the spacing abutment 40 of thimble with the spacing abutment 40 of thimble away from an end of thimble 39 and keeps out.The spacing abutment 40 of thimble is installed in the base 12 and with base 12 and fixes.The position of corresponding knock-pin 38 is provided with emptiness avoiding hole 61 on the spacing abutment 40 of thimble, and knock-pin 38 is towards the external diameter of the emptiness avoiding hole 61 1 ends aperture less than emptiness avoiding hole 61, and friction slip 43 is greater than the aperture of emptiness avoiding hole 61.
The die indexing means comprises first driving cog 49 that is arranged on die socket 8 borders, is provided with the disk 51 of second driving cog 50 that meshes with first driving cog 49, the disk driving mechanism of driver plate 51 rotations; Second driving cog, 50 shared disk 51 girths are 1/5 disk girth; Be provided with the empty avoiding through hole (not shown) of empty avoiding disk in the position of die case 7 and die holder 6 corresponding disks.The disk driving mechanism comprises the 5th bevel gear 62 that is fixed on second power transmission shaft 27; The 6th bevel gear 63 with the engagement of the 5th bevel gear 62 is fixed on the 4th power transmission shaft 64 on the 6th bevel gear 63, with the 7th fixing bevel gear 65 of the 4th power transmission shaft 64; The 8th bevel gear 66 with 65 engagements of the 7th bevel gear; Be fixed on the 5th power transmission shaft 67 on the 8th bevel gear 66, be fixed on the 9th bevel gear 68 on the 5th power transmission shaft 67, with the tenth bevel gear 69 of the 9th bevel gear 68 engagements; Be fixed on the 6th power transmission shaft 70 that the tenth awl tooth 69 is taken turns, disk 51 is fixed on the 6th power transmission shaft 70.
The spacing abutment guiding mechanism of thimble comprises the adjustment post of fixing with the spacing abutment 40 of thimble 38; First adjustment part 45 that passes adjustment post 38 and second adjustment part 46, first bolt 71 and two first adjust nuts 48, are installed on first bolt 71 and place first adjustment part 45 and the stage clip 47 of 46 of second adjustment parts; First adjustment part 45 near die socket is fixed with body; Adjustment post 38 and first adjustment part, 45 matched in clearance; Second adjustment part 46 away from die socket is fixing with adjustment post 38; One end of first bolt 71 is fixed on first adjustment part 45, the other end of first bolt 71 pass second adjustment part 46 and with second adjustment part, 46 matched in clearance, adjustment nut 48 is installed on first bolt 71 and places the side of second adjustment part 46 away from first adjustment part 45.When the length of workpiece changes, move to the motion of die direction or away from the die direction through rotating the first adjustment nut, 48, the second abutment 46.Second abutment 46 is to the motion of die direction, and the spacing abutment 40 of thimble shortens with the distance of die socket 8, and the distance that thimble 39 is inserted in the die is elongated, and the length of workpiece shortens; Second abutment 46 is to moving away from the die direction, and the spacing abutment 40 of thimble is elongated with the distance of die socket 8, and the distances that thimble 39 is inserted in die and the die socket 8 shorten, and the length of workpiece is elongated.
The method of work of upsetter comprises: die is rotated to the die of shaping position, the die of discharging position by the die of feed entrance point; After rotating to the die of its adjacent position; After promptly rotating 72 °; First driving cog 49 that second driving cog 50 on the disk 51 breaks away from the die socket 8, backstay 18 gets in the die socket 8 under the effect of spring 20, and die socket 8 stops operating; In the process of die socket 8 rotation, realize in the die workpiece from last operation backward the transmission of an operation and the die of discharging position move to feed entrance point, the die of feed entrance point moves to shaping position; Die socket 8 stops; Charging ram 57 will be put in the die of the blank propelling feed entrance point that is clamped to feed entrance point from cutting material level by cutting material cutter and clip feed blade; Workpiece in the corresponding die carries out the upsetting moulding to punch die to die direction motion and to it, and knock-pin 38 will eject that in type workpiece ejects in the die of position; Charging ram 57, punch die and knock-pin 38 accomplish corresponding actions and reset with the effect of backstay 18 at the driving mechanism of the first goods of furniture for display rather than for use driving shaft 13 etc. under with after die socket 8 separates; First driving cog, 49 engagements on second driving cog 50 on the disk 51 and the die socket 8; Die socket 8 begins to rotate, so circulation.In the process of die socket 8 rotations; Thimble 39 rotates with friction slip 43 and die socket 8 synchronously; The spacing abutment 40 of thimble is not moved; Thimble 39, friction slip 43 relative die sockets 8 keep static, and friction slip 43 contacts with the spacing abutment 40 of thimble and produces force of sliding friction, 40 fricton-tight frictional force of the spacing abutment of 43 of thimble 39 and friction slips, thimble 39 and thimble.
Embodiment 2
As shown in Figure 6, different with embodiment 1 is, the spacing abutment guiding mechanism of thimble comprises second bolt 100, stop collar 102; On body, be provided with the pilot hole (not shown) of the spacing abutment of thimble; On the spacing abutment 103 of thimble, be provided with and prevent the spline plane 106 that the spacing abutment of thimble 103 relative bodies rotate and the emptiness avoiding hole (not shown) of second bolt 100; In pilot hole, be provided with the plane (not shown) that cooperates with the spline plane, spacing abutment 103 of thimble and pilot hole matched in clearance; Second bolt 100 is rotation clamping hex head end 101 away from an end of die socket 104, and being provided with positive stop lug boss 107, the second bolts 100 at second bolt 100 near hex head end 101 is the end of thread near an end of die socket 104; Stop collar 102 is fixed with body, in stop collar 102, is provided with the shoulder hole that cooperates with second bolt 100 and positive stop lug boss, and the macropore 108 of shoulder hole is towards die socket 104 1 sides; The end of thread of second bolt 100 passes the spacing abutment 103 of thimble and extend in the emptiness avoiding hole of lead 105; The limited cover 102 of positive stop lug boss one end of second bolt 100 is kept out spacing; The other end is kept out spacing by body, spacing abutment 103 threaded engagement of the end of thread of second bolt 100 and thimble.When the length of workpiece changes; Through rotating the rotation clamping hex head end 101 of second bolt 100; 100 on second bolt rotates no axially-movable; The spacing abutment 103 of thimble has only axially-movable not have rotation, so the spacing abutment 103 of thimble is moved to the motion of die socket 104 directions or away from die socket 104 directions.The spacing abutment 103 of thimble is to the motion of die socket 104 directions, and the spacing abutment 103 of thimble shortens with the distance of die socket 104, and the distance that thimble 109 is inserted in die and the die socket 104 is elongated, and the length of workpiece shortens; The spacing abutment 103 of thimble is when moving away from die socket 104 directions, and the spacing abutment 103 of thimble is elongated with the distance of die socket 104, and the distance that thimble is inserted in die and the die socket 104 shortens, and the length of workpiece is elongated.
Embodiment 3
As shown in Figure 7, different with embodiment 1 is on the lead 206 of second end cap 205, not to be provided with gathering sill.Outside thimble 202, be with back-moving spring 203, back-moving spring 203 places 201 of thimble 202 and die sockets.The spacing abutment 200 of thimble is a ring-type, is enclosed within outside the lead 206 and with lead 206 to fix, and thimble 202 is kept out by the spacing abutment 200 of thimble away from an end of die.The position of corresponding each thimble 202 is provided with emptiness avoiding hole 204 on the spacing abutment 200 of thimble, when each die rotates to the discharging position, and the knock-pin 207 top thimbles 202 of workpiece ejecting mechanism, thimble 202 ejects the workpiece in the die.Like this in the process of die socket 201 rotation, thimble 202 rotates with die; Remove in the process that discharging position workpiece is ejected, thimble 202 relative die sockets 201 have relative motion, and under all the other states, thimble 202 relative die sockets 201 are static.
Embodiment 4
Like Fig. 8, shown in Figure 9, different with embodiment 1 is that the number of punch die is two, comprises punch die 300 and punch die 301.The number of die is four, comprises the die 303 of die 302, the discharging position of feed entrance point, the die 304 corresponding with punch die 300, the die 305 corresponding with punch die 301.The thickness of die socket 300 and die is identical, need to equal the length of the workpiece of moulding in die; Be provided with die holder (not shown) near a side of punch die at die socket 300 fix, spacing end cap 306 of keeping out die socket 300; Die socket 300 is away from a side quilt and fixing spacing the keeping out of base of body of body; The moulding hole 308 of shaping workpiece is kept out by base 307 in the die, and workpiece is provided with the emptiness avoiding hole 310 of knock-pin 309 on base 307.When the upsetter upsetting, the knock-pin 307 of workpiece ejecting mechanism stretches in the base 307 and with the end face of die and contacts.
The blank propulsive mechanism comprises the pusher cam 312 that is fixed on the bent axle 311; Can with the roller 313 of pusher cam 312 butts; One end is equipped with the first pusher goods of furniture for display rather than for use 314 of roller 313, is fixed on the second pusher goods of furniture for display rather than for use axle 315 on the first pusher goods of furniture for display rather than for use, 314 other ends, is fixed on the second pusher goods of furniture for display rather than for use 316 on the second pusher goods of furniture for display rather than for use axle 315; Charging ram 317, pusher goods of furniture for display rather than for use back-moving spring 318; On charging ram 317, be provided with the second pusher goods of furniture for display rather than for use containing hole 319; The second pusher goods of furniture for display rather than for use 316 inserts in the pusher goods of furniture for display rather than for use containing hole 319 away from an end of the second pusher goods of furniture for display rather than for use axle 315; Pusher goods of furniture for display rather than for use back-moving spring 318 1 ends are connected on the first pusher goods of furniture for display rather than for use 314, and an end is connected on the body.On big slide block 320, be provided with and make the charging ram 317 only can axially movable chute 321.
But the cavity die rotating device request for utilization in the utility model number is the cavity die rotating device in 87105260.1.

Claims (14)

1. a multi-stage female die returning jolting machine comprises big slide block, is fixed on the die assembly on the big slide block, the big slide block driving mechanism that big slide block is moved back and forth; The die assembly; Cut feed collet material mechanism, the workpiece ejecting mechanism makes die rotate the die indexing means of desired location; The die positioner that die is stopped at desired location, material jacking mechanism; The die assembly only comprises the die socket of support rotation relatively, circumferentially is evenly distributed on the die more than two in the die socket along die socket; It is characterized in that: the number of die manys two than the number of punch die, comprises die and shaping position and the punch die die one to one of die, the discharging position of feed entrance point; Die position in the corresponding charging of punch die one side is provided with the blank propulsive mechanism in the die that blank is advanced feed entrance point, on the big slide block of punch die one side, is provided with empty avoiding and cuts the empty avoiding space of feed collet material mechanism, blank propulsive mechanism, corresponding discharging position and be provided with the discharging clearance position of workpiece when ejecting.
2. a kind of multi-stage female die returning jolting machine as claimed in claim 1 is characterized in that: the blank propulsive mechanism comprises the pusher cam, the pusher cam drive mechanism; One end can with the pusher goods of furniture for display rather than for use of pusher cam butt; Be fixed on the gear shaft on the pusher goods of furniture for display rather than for use other end, be fixed on the pusher cylindrical gear on the gear shaft, charging ram; Pusher goods of furniture for display rather than for use back-moving spring; On charging ram, be provided with the driving cog that meshes with the pusher cylindrical gear, pusher goods of furniture for display rather than for use back-moving spring one end is connected on the pusher goods of furniture for display rather than for use, and an end is connected on the body.
3. a kind of multi-stage female die returning jolting machine as claimed in claim 1; It is characterized in that: the blank propulsive mechanism comprises the pusher cam, the pusher cam drive mechanism, an end can with the first pusher goods of furniture for display rather than for use of pusher cam butt; Be fixed on the second pusher goods of furniture for display rather than for use axle on the first pusher goods of furniture for display rather than for use other end; Be fixed on the second pusher goods of furniture for display rather than for use on the second pusher goods of furniture for display rather than for use axle, charging ram, pusher goods of furniture for display rather than for use back-moving spring; On charging ram, be provided with the second pusher goods of furniture for display rather than for use containing hole, the second pusher goods of furniture for display rather than for use inserts in the second pusher goods of furniture for display rather than for use containing hole away from an end of the second pusher goods of furniture for display rather than for use axle, and pusher goods of furniture for display rather than for use back-moving spring one end is connected on the first pusher goods of furniture for display rather than for use, and an end is connected on the body.
4. like any described a kind of multi-stage female die returning jolting machine of claim 1 to 3; It is characterized in that: material jacking mechanism comprises that an end is installed in the die and die thimble one to one, and the other end of thimble is carried out the spacing abutment of spacing thimble of keeping out; Only be provided with described workpiece ejecting mechanism, but the workpiece ejecting mechanism comprises the knock-pin of top thimble in the die position that workpiece is ejected; Spacing abutment of thimble and die socket or body are fixed, and the position of corresponding knock-pin is provided with emptiness avoiding hole on the spacing abutment of thimble, and knock-pin is towards the external diameter of the emptiness avoiding hole one end aperture less than emptiness avoiding hole.
5. a kind of multi-stage female die returning jolting machine as claimed in claim 4 is characterized in that: the spacing abutment guiding mechanism of thimble that also is provided with the distance between adjustment spacing abutment of thimble and the die socket; Be provided with and the fixing lead of die socket in the side of die socket away from die assembly; The position of corresponding each thimble is provided with chute on lead; Friction slip is installed in chute, and described thimble contacts with friction slip away from an end of die socket and is kept out spacing by it; Spacing abutment of thimble and body are fixed, and the face that friction slip contacts with the spacing abutment of thimble is greater than the aperture of emptiness avoiding hole, and described friction slip contacts with the spacing abutment of thimble and kept out by the spacing abutment of thimble away from an end of thimble.
6. a kind of multi-stage female die returning jolting machine as claimed in claim 5; It is characterized in that: the spacing abutment guiding mechanism of thimble comprises and the fixing adjustment post of the spacing abutment of thimble; Pass first adjustment part and second adjustment part, first bolt and two first adjustment nuts of adjustment post, be installed on first bolt and place first adjustment part and second adjustment part between stage clip; First adjustment part and body near die socket are fixed; The adjustment post and the first adjustment part matched in clearance; Second adjustment part away from die socket is fixed with the adjustment post; One end of first bolt is fixed on first adjustment part, the other end of first bolt pass second adjustment part and with the second adjustment part matched in clearance, the adjustment nut is installed on first bolt and places the side of second adjustment part away from first adjustment part.
7. a kind of multi-stage female die returning jolting machine as claimed in claim 5 is characterized in that: the spacing abutment guiding mechanism of thimble only comprise rotatable can not axially movable second bolt, stop collar; On body, be provided with the pilot hole of the spacing abutment of thimble, between pilot hole and the spacing abutment of thimble, be provided with the rotation preventive mechanism that prevents that the relative body of the spacing abutment of thimble from rotating, matched in clearance between spacing abutment of thimble and pilot hole; Second bolt is the rotation bare terminal end away from an end of die socket, is provided with positive stop lug boss at second bolt near the rotation bare terminal end, and second bolt is the end of thread near an end of die socket; Stop collar and body are fixed, and in stop collar, are provided with the shoulder hole that cooperates with second bolt and positive stop lug boss, and the macropore of shoulder hole is towards die socket one side; The end of thread of second bolt passes the spacing abutment of thimble, the spacing abutment threaded engagement of second bolt and thimble.
8. a kind of multi-stage female die returning jolting machine as claimed in claim 4 is characterized in that: spacing abutment of thimble and die are fixed; Outside each thimble, be with back-moving spring, back-moving spring places between thimble and die socket; The position of corresponding each thimble is provided with described emptiness avoiding hole on the spacing abutment of thimble; Thimble is towards the external diameter of the emptiness avoiding hole one end aperture greater than emptiness avoiding hole; When each die rotates to the discharging position, workpiece ejecting mechanism top thimble, thimble ejects the workpiece in the die.
9. like any described a kind of multi-stage female die returning jolting machine of claim 1 to 3, it is characterized in that: the thickness of die socket and die is identical, need to equal the length of the workpiece of moulding in die; Only be provided with described workpiece ejecting mechanism, but the workpiece ejecting mechanism comprises the knock-pin of top thimble in the die position that workpiece is ejected; The moulding hole quilt of shaping workpiece is kept out with the fixing spacing abutment of workpiece of body in the die, on the spacing abutment of workpiece, is provided with the emptiness avoiding hole of knock-pin.
10. like each described a kind of multi-stage female die returning jolting machine of claim 1 to 3, it is characterized in that: the die positioner comprises the first goods of furniture for display rather than for use driving shaft, the driving mechanism of the first goods of furniture for display rather than for use driving shaft; Be fixed on first goods of furniture for display rather than for use on the first goods of furniture for display rather than for use driving shaft; With the second fixing goods of furniture for display rather than for use axle of body, only be articulated in second goods of furniture for display rather than for use on the second goods of furniture for display rather than for use axle rotationally, backstay; With the fixing backstay guide pin bushing of body, second back-moving spring; Backstay comprises two small ends; Small end towards die socket stretches in the die socket; Pass guide pin bushing and on this small end, be provided with the installing hole of second goods of furniture for display rather than for use away from the small end of die socket; Second back-moving spring is installed between guide pin bushing and backstay, and an end of second goods of furniture for display rather than for use stretches in the installing hole of backstay, the other end of second goods of furniture for display rather than for use can with the first goods of furniture for display rather than for use butt.
11. like each described a kind of multi-stage female die returning jolting machine of claim 1 to 3; It is characterized in that: the die indexing means comprises first driving cog that is arranged on the die socket border; Be provided with the disk of second driving cog that meshes with first driving cog, the disk driving mechanism of driver plate rotation; The shared disk girth of second driving cog is disk girth and die number ratio.
12. a kind of multi-stage female die returning jolting machine as claimed in claim 11; It is characterized in that: outside die socket, be provided with the die holder; Be provided with spacing first end cap and second end cap in die case of die socket at the two ends of die socket; First end cap is near die assembly, and first end cap is fixed on the die holder, and second end cap is fixed on the die socket and is limited in the die holder; Be provided with the empty avoiding through hole of empty avoiding disk in the position of the corresponding disk of die holder.
13., it is characterized in that: cut feed collet material mechanism, comprise and cut the material bar like each described a kind of multi-stage female die returning jolting machine of claim 1 to 3; The reciprocating material bar driving mechanism of cutting of material bar is cut in driving; Be fixed on and cut cutting the material cutter and cutting the feeding clip mechanism that the material cutter cooperates the clamping blank on the material bar, feeding clip mechanism comprises clip feed blade; Cut the holding part that material cutter and clip feed blade complement each other to form the clamping blank, make clip feed blade expect that cutter opens, puts blank and opens mechanism at the clip feed blade of desired location with cutting; Also be provided with make clip feed blade cut relatively the material cutter reset closed form the holding part of clamping blank, the spacing resetting-mechanism of the feeding clip mechanism of restriction clip feed blade motion in the process that blank is cut off; At feed entrance point, the holding part of clamping blank is along the diameter of the width of cutting the material cutter direction of motion greater than blank; Put cutting material level, clip feed blade is cut the material cutter relatively and is kept fixing, and the holding part of clamping blank does not change.
14. the method for work like each described multi-stage female die returning jolting machine of claim 1 to 3 is characterized in that method of work comprises:
Die is rotated to the die of shaping position, the die of discharging position by the die of feed entrance point; After rotating to the die of its adjacent position; After promptly rotating the angle of 360 °/die number, stop operating at desired location at die positioner and the recessed die holder of die indexing means acting in conjunction; In the process of die socket rotation, realize in the die workpiece from last operation backward the transmission of an operation and the die of discharging position move to feed entrance point, the die of feed entrance point moves to shaping position; Die socket stops; The blank that the blank propulsive mechanism will be clamped to feed entrance point advances in the die of feed entrance point; Workpiece in the corresponding die carries out the upsetting moulding to punch die to die direction motion and to it, and the workpiece ejecting mechanism will eject that in type workpiece ejects in the die of position; After blank propulsive mechanism, punch die and ejecting mechanism are accomplished corresponding actions and are resetted, rotate the angle of 360 °/die number again at the acting in conjunction lower cavity die of die detent mechanism and die indexing means, so circulate.
CN2010101247501A 2010-03-12 2010-03-12 Multi-stage female die returning jolting machine and operating method Active CN101817052B (en)

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