CS245202B1 - Device for tools' automatic exchange with horizontal multi-operational transfer presses - Google Patents

Abstract

In order to be able, in an automatic tool-changing device for horizontal presses, in particular for multistage presses for cold and hot deforming, to undertake a rapid change of a complete set of two, three or more pairs of tools, it is proposed according to the invention that the device consists, on the one hand, of a pair of transport magazines (11, 13) for tools (4, 2), of which both the transport magazine (11) for punches (4) and the transport magazine (13) for dies (2) are provided with an actuating mechanism for gripping the tools (2, 4) and pushing them into or out of the transport magazine (11, 13), and, on the other hand, of a movable mount (7) in which a guide (25) for pushing in one transport magazine (11, 13) is provided extending parallel to the axes of the tools (4, 2), the movable mount (7) being arranged capable of moving back and forth from the pressing chamber into a removal and storage chamber for worn tools (2, 4) taken from the press and for new tools (2, 4) to be inserted into the press. <IMAGE>

Description

(54)

Equipment for automatic tool change for horizontal multi-operation transfer presses

The purpose of the invention is to reduce the time of automatic program-controlled tool change of multi-step flow automatic presses for student or hot forming. _t

Into the working space of the press is inserted a holder with a centering device, into which the teeth are pulled out of worn dies, while the teeth are moved by the knee-lever mechanisms by hydraulic drive. In the out-of-press position, the full die carrier a is removed from the holder. empty magazine tray inserted. The old dies are ejected from the transmitter to the board and a new board with new dies is moved. they are inserted into the transmitter. After the container holder has been moved into the storage position, the transmitter with new dies is moved into the holder and these are inserted into the corresponding cavities of the press in reverse order. Similarly, old butchers are pulled out and new butchers are deployed.

The essence of the invention is the automatic exchange of many tools at the same time mechanically.

It is used for multi-part automatic transfer machines for cold or hot bulk forming.

245 202

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool change apparatus for transfer presses intended for cold or hot volumetric forming, in which a ram is movably mounted against a stand in which at least one cavity is located one die. stored tool types - punch.

For the replacement of worn-out tools for new ones, multi-operation transfer presses have been used to date, such as the Changemaster equipment of Schuler (Peltzer and Shlers - Krefeld), which has program-controlled change of individual punches and dies. The machine is provided with a manipulator that pulls the individual tools out of the press chucks and moves them to a storage rack from which they remove one new tool for insertion into the press chuck.

Since the tools used for bulk forming have a relatively large weight and must be firmly pushed into the cavities of the press, great force is required to push and pull the tools out of the cavities. For this reason, and also because the space for changing tools in the working space of the press is very limited, the use of known devices is associated with a number of problems and the devices do not increase the operational usability of the machine, since they do not significantly reduce the loss times. The overhang of the manipulator arm is too large and the whole system is less rigid, so that the insertion and withdrawal of the tools is not performed precisely enough. The devices are complex and relatively slow because they perform tool changes one at a time.

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the drawbacks of known devices and to allow rapid replacement of the entire set of two, three or even more tool pairs, which is particularly needed for small-scale production of moldings or forgings.

This object is achieved by the tool change device of the transfer presses according to the invention, which consists in that it consists of a punch magazine and a die die carrier connected to the teeth, alternately in contact with the grooves on the punches and die die, further from a mobile holder in which the transverse guide is parallel to the punch and die axes, adapted to the magazine or carrier, wherein the mobile holder is slidably mounted in a guide on a guide track

245 202

- 2 off-center to the punch and die axes between the press working area, the designated stand and the ram and between the stowage area with the carrier for the punch magazine and the die carrier bracket.

Next to the carrier and the bracket are rails parallel to the guide and rails in a direction perpendicular to the guide. The gemstones are movably mounted on the upper and lower sides of the magazine and the transmitter and are connected to a double knee-lever mechanism, fixed by fixed pins to the magazine and the transmitter and connected by calipers to a hydraulic drive mounted on the bracket connected to the magazine or the transmitter.

On the rigid carrier there are mounted rollers touching the magazine on the path between the rigid carrier and the movable holder, and on the bracket are pushed contacts touching the carrier on the path between the bracket and the movable holder. To increase the rigidity of the device when changing tools, the magazine and spreader carrier are supported by the ram and the pads pushing the device away from the rack.

A substantial advantage of the device according to the invention over the known devices is that the entire set of juxtaposed tools is replaced at the same time by means of a control device arranged directly in the punch magazine and in the die carrier, the device being as rigid as possible. The twin-knee mechanism multiplies the force from the hydraulic drive so that sufficient force is obtained to retract and pull tools out of the cavities of the press.

The object of the invention is evident from the description and schematic drawing showing an exemplary embodiment of the device according to the invention. 1 is a plan view of a transfer press provided with a device according to the invention; FIG. longitudinal vertical section of the guideway, mobile holder and punch magazine, FIGS. 3 and 4 show the punch magazine and detail of the ram ram in horizontal section along the lines III-III, IV-IV of FIG. 2, FIG. while Fig. 4 shows the plunger magazine after withdrawing the plungers from the press; FIG. 5 is a cross-sectional vertical cross-sectional view of a plunger magazine in a working manner;

245 202 space. 6 and FIG. 6 is a vertical cross-sectional view of a die die carrier in the press working space.

Z ° br. 1 ^{'is evident} to me that illustrated in more ^{ERAC e} op · press rolling them are in the cavity ^and s stand 1 u ^ eny -led ^{ebe e} and ^{Ex P} y mouth ^to 2 and against uti.n ^d in ^Å c ^h ^ Mov him ^{ram 2 .mu.l of} the ^currency raníky Д. As ^western USTK · 2 ^{t ki} and punches 4 are ^ St ^ protrude! ^{of the drawbar with} t nu 1_ ram 3 and the upper ^p atíženy ^al ° ^d her hand two opposed tangential grooves 14 * »

Next to the press there is a storage and supply space for worn and new dies 2 and punches 4. The arrangement of this space, which is shown at the bottom of Fig. 1, will be described below.

A guide track 5, which extends above the working space of the press and above the stowage and supply space · extends outwardly to the axes of the dies 2 and the punches 6, is fixedly fixed on columns (not shown) or brackets. In the guide track 2 a guide holder 2 »is provided in the guide 24, provided with a transverse guide 25» which is parallel to the axes of dies and punches 4 and is perpendicular to the direction of the guide track 5.

In the transverse guide 25 of the mobile holder 7, a magazine 11 or a carrier 13 can be inserted. 2. the mobile holder 7 is provided with an index 10 for engaging the guide track 2 and ensuring its correct stationary position when replacing the dies 2 and the punches 4 and the magazine 11 of the punches 4 or the carrier 13 of the dies 2 and the other 12 for engagement with the cartridge 11 or carrier 13 inserted therein.

Movable holder 7 is in the guideway 2 · reversibly ^{р гип1з} 11п1 ^from p ^ ^r and ^Company him. space KSU between forehead · ram ² and ^UP and ^NAC írni cavity ^m i ^of apust ^ek 2_ n ^as it ^ja n ^{u 1 if U} to ^the Stavn ^Star it up ^and reindeer ^{EDGINGPROFILE} í space рю ^{Ac-drop "for} Y 2, and vigorously ^Cart £ y, ch rakteri ^{and the} aqueous carrier s ^{and 27 m} diameter ^{of Ex} 11 with ^obník vigorously ^to 4 ^with a ^diameter of 38 konizolou ^{EXAMPLE EC 13} Naš ^{e Zap} i ^ j3t ^{EK 2} / o ^. ¹ /. ^{For n} os ice ^{m 37 if} he: Zola 3 ^{8 are p} by both s-trenách hydrogen ^c s ^d Rahy 5 ^ro VNO ^run them with the side al ^eje 32 ^{from those areas where one of} j ^sou by ^saying for ^d es ^to s 30 for die 2 ^and expensive ^for die ^{21 for} punches ⁴ . · ^{Above the} film ^{32 on the} unsaturated resleném fftojwrn n ^ehyb These ^{stored beam} 28 ^e c · ^d ot the piston rod in ^{the Y} to ^Z, and ^b ° ^to the ERN 11

245202 tlaě ^u ^ 29 ^with the piston rod in dot ^yk US transmitter 12 'perpendicular ^to al ~ ^{e 32 are both} Root ·. on yen ^{after OL} j ^{ni e} c ^{e to j} with ^the toerjm u ^p s ^p ^ ^oj ^ ^e ^ ^ny ornate poH.ce ³⁴ P ^ro · ^ethyl PAL ²¹ once £ ^ alkyl ^{and d} ^ rah ^Star Tro ^is and ^having BN: rack 35 d 22 ^d Esek for ^{Ex-drop to} 2 · y

Zaa bník ^about 11 and transmitter 13 are provided with a control device which ^is made up ^{of n} r ⁿ E ^{No in} FIG. 2, 3 and 4. This ^is rnstrojí TV ^Oren h ^y dr ^and lCcým drive 20 * ^k * y ^of tei VLA ^dA re ^ost r ^dn and ^c tvi ^{m ASCM} j ^{eného kolenop an} AK tion ^ CH ^ nizmu 18 pair blocks 16 ^{disposed Pusher} p e ⁱⁿ which ^m ERA ^{axis Z,} and ^P 2 and Ustek razníiiů. And provided £ ^ £ 1 oz ^Kašte 'p ^{ro for} ber ^{n AVZ} Aja pratilehljfai ^m. -tangency. 1 £ ^{Ac-drop of K} and ^C H 2 ^{and vigorously} íoích ^£. Ka ^f res ^rock, 16 is coupled ^with the ^{Ojen dn} r ^M e mayweed ^{al nop an} AK VEH ^the mechanism 18, its ^{Z contiguously disposed} against expensive REM ^{ene, is} mounted pivotably on the stationary shaft. By means of the pull bar 22, these arms, which are intended for one die 2, are connected with the same arms, which are intended for a secondary die. The allogical connection of the knee-lever mechanism 18 is shown in Figs. By means of the yoke 19, the knee-lever mechanism 18 is connected to a piston of a hydraulic drive 20 (not shown). The hydraulic drive 20 is mounted on a bracket 21 connected to a magazine 11 of punches. In the same way, the expensive drive 20 is mounted on a bracket 21 connected to the die carrier 13 by the piston rod supports.

27, with ^companies whose are contacted. with ram ^

In the ^C o <^ i ^ L portion of the container 11 is also equipped with a transceiver 13 · hydrauHckými spacer 26 and the hydraulic working space of the press and ejected to the stand 1,

From FIGS. 2, 5 and. 6 it is apparent that _the mobile 39 narairukam holder 7 is provided with a pinion 2 which is driven by a hydraulic motor eighth · pinion 2 is z'á ^taking with oz esnyfo ^gro ^ e ^b ene 6, ^wherein n ^and t veřeným conduit 24th for ziajištění ^with PR ^{ávné angles polyaminocarboxylic} field ^H yz ^stork Ustek 2 ^»£ · ra.zníků the cavities with ^{the N} and ^C H 1, ^{a ram} 2 Hau RP ^and with it ^{to b} at ¹¹ in a carrier 13 with ^ia Ohle ^{forming the nk} p <^ ^{taken, the} -so ^as per ^picture er tooth 15 ^of blocks 16 st ^ang enciální ^m (YC ^ ^ i £ 1 ^{in b} y ^p zahranilo ootočení provision Ex ^{p e} k 2 ^and once with ^{n £ to} .z Tet ^O P ^ocations Y, Z ^and with ^b Towel 11 and ^{Pla at e} No. 1 ³ thine ^enyl hydrogen ^{the more} and ²² / Fig. 2 / P ^{ro, r} er POÚ ^ APPLICABLE slots in ^the AP ^at St ^{»sPectrum 2 and} r ^and from ^anyone's MTY · the 22nd adjoining ^to the ^{anal gic} to ^Star in HJty <

^{u-rail 22 d} ut ^inách with ^TOJ anus. · 1 and ^{b and} n er ^{2 u} / ^o Br. ² and 4 /. & Tesk · h 22 ^Ex pui3 ^t e ^k 2 and the pallets 31 xazrátó ^£ ЛЪг. 1 /

245 202

Replacing worn punches dies 2 and 4 is carried out as follows: A '' ^{to poj} ízdnéh ^the holder 7 in the parking and ^{ásobovac etting pr} ° ^st oru inter LIS / oto. 1 / ^{kl again} une e.g. ad laborious obiiík ^ ^H ^ R ^ cr Daos ^£ raého ^поз1с о ££. Proper ^p ocations mobile tožáteu 7 ^prEN vodítau ££, ^PM Ooi ^dd .mu.Ci shown in ^{FIG 5 with a} # ^p o ^j detects istk ° for ¹² to ^{U e} DenX dronotoru H ^y c ^h into ODU ^e p ^o j ^dzdný dr ^{pupil χ P} R ^e im broad ^d d ^o ^ acovnío ^P ros ^t Oru ^press at ^{where zastaíd in messages} No ^P ° l ^{RES I} to .mu.l ^e index 10 zapatae ^d of ^d ul ^{to loan-diC path} e £ . In this position, the teeth 15 of the stones 16 are inserted into the tangential grooves 14 of ^the worn punches, as shown in FIGS. 3 and 5, showing the initial position of the actuating device. Simultaneously stopping the roll holder £ ^ from the tank 11 are extended on both sides of rod spacers 24 and Erel ^P "in contact with a stand '1 on the one hand. with a ram 8 on the other side, as shown in the art. 5. The device is thus ready for pulling out the worn punches 4.

Under the action of the hydraulic drive 20 of the actuating mechanism, its seam-face 18 and the arms of the knee-lever mechanism 18 extend to the second dead center shown in FIG. 4 while pulling the worn punches 4 out of the ram cavities 2. worn punches 4 returns to the stowed position providing carrier 37 and bracket 28 and is secured in this position by index 10 *

Hydaulické pushers 29 are retracted · empty carrier 13 from the bracket 28 on the mobile holder χ while pushing the reservoir ¹¹ ^ i ^ otřehen razníy carrier 4 to 37 ^ to ^ mediation Niku · 22 ^{/ ob} r. ⁵ and 6 /. ^p RENA ^{a catch} 13 is secured in ^BC> íčné ^m ^ dítkn already ^after 25 ^{whatsoever, the holder} of ^{JIS P χ} TK in ¹² ° ^{position. to the} now obsolete d ^p ovide a kettle and ^Zn arability by * in FIG. 6.

On. ^{b C c} H ^to the OLE ^her next 2 ch £ ^p EVN ^e ho - carriers ³⁷ and 11 řáwtaftu J® připravena- empty pellet 31 »in which ejects. opooře- ^b of ^the Christians .ra ^ iy ^ e ^{of 4} sototau 11 h ^of exposure ^is OTlád ^CC ^ tr ITO ^on it, which from the position of FIG. 4 returns to polohypodle FIG. 3. Palota £ ¹ needed ^, raznííky 4 then ^than ^, ^ i ^ <^ ° ^I. ^ Nýrn ^mouth r ^about her ^ © rnítí ^m and ^{MO of} DST ^and n ^y and z ^s sobovací ^p r ^o st ^of r. ^{M it} iS ^ d ^ ^ ^EN fifth carrier 11 biased sobníu ^ £ 1

245 202_6 with the new punches, by bringing them along the rails D2 to the fixed support Д, the tangential grooves 15 of the new punches are brought into engagement with the teeth 15 of the stones 16 of the magazine 11 by moving the actuating device from the position of FIG. 4, the new punches D are pulled out of the pallet 41 ^and inserted into the magazine 11, which is now in the ready position in the fixed support 37.

Meanwhile, the mobile holder with an empty transmitter J 12 P ^lay "místil into the working space of the press and by the actuator device 13 in the carrier have been worn out of the die 2 are withdrawn from the frame 1 of the press. The carriage 1 then returns between the carrier 37 and the bracket 38 as shown in FIG. 1.

All worn tools are now removed from the press, and in the storage and supply space between the carrier 37 and the bracket 38 there is a carrier 13 with worn dies 2 in the movable holder 2 and next to it there is a magazine 11 with new punches 4 in carrier 37.

Under the action of the hydraulic cylinders 28, the new punch reservoir 11 is inserted from the carrier 37 into the mobile holder J and pushes the worn die 2 carrier 13 into the bracket 38 next to which the worn die plate 30 is provided on the rails 32. of the transmitter 13 onto the plate 30 and the insertion of new dies 2 into the transmitter 13 is carried out analogously to the above described operations performed with punches

The mobile holder J with the magazine 11 with the new punches 6 is moved into the working space of the press. Here, by bringing the knee-lever mechanism 18 from the position shown in FIG. 4 to the position shown in FIG. 3, the new punches 6 are inserted into the cavities of the ram 2. Here, push the port 13 with the new dies. 2, which pushes the empty magazine 11 out of it into the fixed carrier 37,

Next, the mobile holder χ with the carrier 13 and the new dies 2 is moved into the working space of the press. The insertion of the new dies 2 into the cavities of the stand 1 is carried out in a similar way to the pressing of the punches Д into the ram as described above.

- 7 245 202

Thereby, the exchange of the die tools 7 and the punches 8 ends and the mobile holder 7 with the empty carrier 13 returns to its initial position between the carrier 37 and the bracket 38 as shown in FIG. 1,

The subsequent replacement can thus begin by moving the mobile holder X in which the empty carrier 13 is prepared to the press working space.

Claims (9)

OF THE INVENTION 245 202 1. 3 · Automatic tool changing apparatus for 'horizontal multi-stage' transfer presses, intended for cold or hot bulk forming, with dies embedded in a press stand and bumpers mounted on a movable ram, characterized in that it consists of a magazine (11) for punches / 4 / a 'from transmitter / 13 / for dies / 2 / with stones / 16 / joined! . with the teeth (15) in alternate contact with the grooves (14) on the punch (4) and the dies (2), further from the mobile holder (7), in which the cross guide (25) is parallel to the axes of the punches (4) and (2), in a magazine (13), wherein the mobile holder (7) is slidably mounted in a guide (24) on a guide track (5) extending to the punch axis (4) and dies (2) wherein the guide (24) is between the press working space designated by the stand (1) and the ram (1) 3 / oodstwn; fa space with carrier / 37 / magazine punch11 / 4) and a bracket (38) with a carrier (13) a die (2). Device according to claim 1, characterized in that rails (32) parallel to the guide (24) and the rail (33) in a direction perpendicular to the guide (24) are located next to the support (37) and the bracket (38). Equipment. according to claim 1, characterized in that the stones (16) and the teeth (15) movably mounted on the upper and lower sides of the magazine (11) and the carrier (13) are connected to a double knee-lever mechanism (18), fastened by fixed pins (23). / on the magazine (11) and the transmitter (13) and the coupled calipers (19) on the hydraulic drive (20) mounted on a bracket (21) connected to the magazine (11) or with the transmitter (13) · Equipment according to. points 1 and 2 _; characterized in that the fixed carrier (37) is assigned to the rollers (28) operatively in contact with the cartridge (11) on the path between the carrier (37) and the movable bracket (7) and to the bracket (38) are assigned to pushers (2) / in contact with the transducer / 13 / on the path between the bracket / 38 / and the movable bracket 4 · 245 202 5. Apparatus according to claims 1 to 4, characterized in that the mobile holder (7) is provided with an index (10) which is engaged with the guide track (5) in the press working space given by the stand (1) and the ram (3). and in the storage space between the carrier (37) and the bracket (38). Device according to one of Claims 1 to 5, characterized in that the mobile holder (7) is provided with a fuse (12) in contact with the container (11) and the transmitter (13). Device according to one of Claims 1 to 6, characterized in that the reservoir (11) and the carrier (13) have spacers (26) in contact with the ram (3) and supports (27) in contact with the stand (1). /. Device according to one of Claims 1 to 7, characterized in that the guide track (5) is located above the working space of the press between the stand (1) and the ram (3) and is connected to the toothed rack (6). Ф in which the pinion (9) is engaged with the hydraulic motor (8) mounted on the mobile holder (7). Device according to one of Claims 1 to 8, characterized in that the container (11) and the carrier (13) as well as the pallet (31) and the plate 730 () are provided with bars (36) which engage the longitudinal grooves in the butchers (4) and dies (2), wherein the strips (36) in the magazine (11) and the transmitters (13) are arranged in position Ф ^; in the cavities of the rack (1) and the ram (3) and also on the rails (36) of the pallet (31) and the plate (30).