EP1422050B1 - Presseneinrichtung zum Herstellen masshaltiger Presslinge aus pulverförmigem Material - Google Patents

Presseneinrichtung zum Herstellen masshaltiger Presslinge aus pulverförmigem Material Download PDF

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Publication number
EP1422050B1
EP1422050B1 EP03026748.8A EP03026748A EP1422050B1 EP 1422050 B1 EP1422050 B1 EP 1422050B1 EP 03026748 A EP03026748 A EP 03026748A EP 1422050 B1 EP1422050 B1 EP 1422050B1
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EP
European Patent Office
Prior art keywords
supporting
punch
carrier
punch carrier
height
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03026748.8A
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German (de)
English (en)
French (fr)
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EP1422050A3 (de
EP1422050A2 (de
Inventor
Michael Thomas Silbermann
Johann Meyer
Walter Rau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DORST Technologies GmbH and Co KG
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DORST Technologies GmbH and Co KG
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Publication date
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Publication of EP1422050A2 publication Critical patent/EP1422050A2/de
Publication of EP1422050A3 publication Critical patent/EP1422050A3/de
Application granted granted Critical
Publication of EP1422050B1 publication Critical patent/EP1422050B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/058—Undercut

Definitions

  • the invention relates to a press device with central punch support for pressing dimensionally stable compacts of a substantially powdery material with the preamble features of claim 1.
  • Such presses are generally used for pressing powder or granules of iron, plastic, hard metal, basic ceramic components or the like into compacts, for. As gears or molded parts. Due to the high specific compression pressures of some 30 - 100 kN / cm 2 and more, a very high stability of the press device is required.
  • a modular press according to the preamble of claim 1 is known, which consists of the actual press for applying the main pressing force and a press device, which can be used in the actual press like a adapter.
  • the insertable press device consists of a tool frame, which is coupled via an upper and a lower connecting device between the two press rolls of the press.
  • the adapter-like press device consists of a framework of tie rods which consist of a plurality of plates, stamp carriers and a die plate between the also arranged on the framework or mounted connection means.
  • a base plate in which hydraulic means for relatively moving individual plates formed as a punch carrier are arranged, mounted with a storage lug in the actual press.
  • the other plates are movably mounted relative to this base plate in the framework.
  • the die support plate is rigidly connected via the framework to the lower connection means of the adapter and opposite to the upper connection means of the adapter Adapters arranged displaceably in the framework.
  • the individual punch carriers are hydraulically movable relative to the base plate, so that they can be moved between a filling position in which the die opening of the die holding plate can be filled with powder and a final press position in which the powder is pressed into a compact by means of press dies.
  • the stamps for pressing the powder sit on the respective stamp carriers. In the final press position, the individual punch carriers are supported on fixed stops.
  • Both the piston / cylinder devices for hydraulically driving the individual punch carriers as well as the fixed stops are spaced from the respective central openings of the individual punch carrier in the edge region of the punch carrier.
  • the central openings in the individual stamp carriers are designed in such a way that in each case the punches which rest on a punch carrier which is further away from the die holding plate can be passed through the openings of the stamp plates located closer to the die holding plate.
  • a press for producing dimensionally stable compacts made of powdery material which has an upper and lower Pressenbtex and an adapter used in the press tool frame, which is connectable via a lower coupling plate on the lower bear and an upper connecting piece on Oberbtex.
  • a slidably mounted framework of tie rods is provided, which rigidly connect the lower coupling plate with a Matrizenhalteplatte.
  • punch carrier in the filling and pressing positions movable.
  • a press device in which supporting devices for supporting stamp carriers between a base body and the associated stamp carriers are arranged such that seated on the stamp carriers stamps are supported centrally in the final pressing position on the support means in line of force.
  • Presses for producing dimensionally stable compacts are also generally known DE 42 27 640 A1 , Shown is an arrangement of a plurality of relatively supported plates, which in each case in the outer direction widening supporting surfaces for stamp. Pressing forces of stamps located close to the axis are each discharged laterally outwards and supported off axis via a hydraulic cylinder / piston arrangement.
  • US 5,498,147 relates to a powder press as a press device for producing dimensionally stable compacts of substantially powdery or granular material with a framework, which is connected via a lower connecting means with a lower press frame part of a press.
  • a plurality of punch carrier are arranged, of which at least a part on the framework relative to the die-holding plate and relative to a base in the direction of a central axis extending in the pressing direction is slidably mounted between them.
  • Two of the punch carriers are designed as a hydraulic cylinder / piston arrangement, wherein they are supported far to the side of a central column on the base body. The upper of the punch carrier is supported on the lower.
  • DE 201 17 609 U1 relates to an arrangement of a die plate of a hydraulic press. By means of a respective upper and lower punch pressed parts are pressed in a bore of the die plate.
  • US 5,551,856 A describes a device for inserting stamps in a press device.
  • the basic structure is similar to that US 5,498,147 A , Again, this is a press arrangement with cylinder / piston arrangements.
  • the object of the invention is to improve a press for producing dimensionally stable compacts of substantially powdery material such that a framework with the various components for installation in a press for a variety of requirements is easy to assemble and also with a view to the Supporting devices for the punch carrier an improved arrangement is provided.
  • a Matrizenhalteplatte which is advantageous in the framework, a body disposed in the framework, the die holding plate and the body being slidably disposed relative to each other in the framework, a plurality of die carriers at least a portion of the framework relative to the die holding plate and relative to the base toward a centrally extending in the pressing direction of the central axis is slidably mounted between them, and supporting means which support the punch carrier in Pressend too relative to the base body when the Ab SAinri Chtungen between the base body and the stamp carriers are arranged such that at least one of the support means is supported by another of the support means relative to the base body.
  • support means between the base body and the stamp carriers such that at least one of the support means is supported by another of the support means improves an adapter-like press means for producing dimensionally stable compacts of substantially powdery or granular material, in particular iron powder or ceramic powder, in an advantageous manner.
  • the support of such an arrangement in the framework which is clamped in a press and receives a die holding plate and a base body, which are displaceable relative to each other, enables a stable and modular structure.
  • the support means are assigned corresponding punch carrier, of which at least a part in the frame relative to the die holding plate and relative to the base body slidably mounted between them, wherein the support means support the punch carrier in Pressend ein relative to the base body.
  • a press device is advantageous, in which at least one of the support devices is arranged around the central axis and leaves around the axis a clearance for the passage of stamp carriers and punches, which are assigned to the main body or below the respective associated support means arranged support means. At least part of the support means is therefore expediently arranged about the central axis, which extends in the pressing direction through the press device, and has a free space for punch carrier and punch, which are assigned below arranged support means.
  • Such a structure allows an arrangement for the central support of seated on stamp carriers punch in Pressend ein approximately in power line. This applies to the respectively close to the central axis of the press die, punch carrier and support means and also for the outwardly arranged stamp, punch carrier and support means. In the entire arrangement thus results in a plane support from the base plate, wherein patched on a first support means Stamp carrier and located thereon stamp are supported by this and the first support means also carries a further support means.
  • a press device in which at least one of the support means patch stamp carrier and located thereon punch are supported by this support means and the support also carries a further support means, wherein on the further support means a punch carrier and stamp are arranged and supported, wherein the support means the further supporting device in Pressend ein centrally supported in line of force.
  • the punch carrier and stamp expediently sit on an inside support surface on the associated support means, while a further support means can be placed on the outside support surface of the support device.
  • the line of force leads more or less straightly into the associated supporting device both from punches via the punch carriers.
  • the line of force continues with superimposed support devices in a below-lying support means and thus continue to be rectilinear in the direction of the pressing force, so that shear forces and the like can be avoided.
  • intermediate levels or upper levels can be omitted by means of a modular construction.
  • Simple dimensional changes of the individual components allow easy adjustment of the entire press device to each to be manufactured Compacts.
  • powder compositions and the like may be considered.
  • fill height changes can be taken into account by selecting the suitably dimensioned components due to the modularity.
  • At least a part of the supporting devices has a supporting device element which projects from the side of the supporting device in the direction of the central axis out of the supporting device or projects away and carries an associated punch carrier.
  • the line of force from the punch via the punch carrier which is seated on the support element, although displaced from the straight line of force in the pressing direction through the support means in the direction of the interior towards the central axis.
  • this displacement is so low executable that a rectilinear force line in Pressend ein can still be accepted.
  • the height adjustment takes place in the direction of the central axis relative to the support device, which supports this punch carrier.
  • a particularly simple stamp carrier height adjustment device has a substantially cylindrical structure.
  • a support device adjustment element which is stationary relative to the supporting support device and a lower punch carrier element which is stationary relative to the punch carrier are advantageously cylindrical in one another, the mutually facing walls having threads which engage in one another. For relative height adjustment of punch carrier and support device is sufficient to screw of the support device adjustment member relative to the punch carrier member about the central axis.
  • the support device in conjunction with the punch carrier height adjustment device is dimensioned so that it is designed as a fixed stop for the final press position.
  • the support device advantageously has a support device element, in particular the projecting towards the central axis out Abst Reifenungs realized as a stop element with appropriate dimensioning to form in filling or Entformungs ein a counter-stop for a height-limiting stop member of a punch carrier of a lower support device.
  • the Abstützungs wornselement thus assumes various functions as a fixed stop, as a support member for the punch carrier above the support means and at the same time as a counter-stop for the height limit stop element of a lower-lying punch carrier.
  • An advantage of this is a press device in which at least one of the support devices, with a protruding support device element, dimensioned and designed as a stop element and forms in filling or Entformungs ein a counter-stop for a height-limiting stop member of a stamp carrier of the body or a lower arranged support means.
  • a height limiting stop element is expediently arranged in a height-adjustable manner on the punch carrier in the direction of the central axis relative to the punch carrier, so that simple adjustments to altered amounts of powder and the like are possible.
  • the height limit stop element offers in particular Advantageous embodiment of a cylindrical structure around the central axis around, wherein the height-limiting stop member has an inner cylindrical circumference with an internal thread, which engages in a corresponding external thread on the outer circumference of the associated stamp carrier.
  • a height adjustment is thereby made possible by a simple screwing of the punch carrier and the height limiting stop element disposed about it relative to the punch carrier in the same direction as the height limiting stop member.
  • a height adjustment drive for the punch carrier is advantageously moved in accordance with required lifting heights when adjusting relative to the support device in the same direction as the punch carrier.
  • actuating the height adjustment drive for example, a hand crank or a motor is used.
  • the height adjustment of the height adjustment drive together with the height adjustment of the punch carrier or the height limit stop element is carried out by appropriate pitch and possibly reversed gradients of various transmission elements such that the height adjustment drive is raised to the same extent as the punch carrier or the height limiting stop element.
  • a Presseneinrichtüng in the height adjustment drive drives a first threaded element, in particular a threaded spindle, which moves the height adjustment drive relative to the support device or relative to the punch carrier, and has a toothed wheel fixed to the threaded element and co-rotating about the longitudinal axis of the threaded element, wherein the toothed wheel or one or more intervening toothed transmission engages in a toothing on the outer circumference of the punch carrier height adjustment device or on the outer circumference of the height limiting stop member co-rotating.
  • a press device in which the height adjustment drive via at least one threaded bore and / or receiving bore without threaded therein modular is designed to use modular.
  • corresponding receiving devices in particular threaded holes and in the corresponding stamp carriers or laterally projecting punch carrier plates like, trained. Threaded holes are used in particular for inserting a threaded shaft, which is rotated together with thenaturenverstellterrorism and raises or lowers the individual elements of the height adjustment drive at a rotation.
  • an actual position sensor for determining a relative actual position between at least one of the support means and a punch carrier supported thereon and the base body enables a particularly simple modular construction.
  • An actual position sensor may be used in simple embodiments to warn a plant engineer in the event of misalignments.
  • the use of such allows Istpositionssensors but also a controlled control to adapt movements of different punch carrier relative to each other and / or relative to the base body as needed to a setpoint curve.
  • a hydraulic control instead of the adjustment of modular weglassbaren height adjustment drives is possible.
  • a transfer of the basic principle to presses with hydraulic control of the pressing process is feasible.
  • a clamping device in particular clamping plate can be provided, which is arranged between an upper support means and the die holding plate.
  • the clamping device serves to clamp the mutually supporting support devices against the body.
  • a press apparatus is advantageous in which at least one of the support means has a support device support section for supporting a higher support device or a spacer interposed therebetween, the support surface of the support device support section being located lower than a die carrier support surface.
  • a press device in which two partially intermeshing one above the other arranged support means are arranged one inside the other, that between the laterally adjacent surfaces a gap is formed, is discharged via the residual powder down and laterally at the same time.
  • the dimensioning of the lateral walls of the support means such that a gap remains between further Abstützungswandungs Anlagenen, stamp carriers or punches, which can be used to dissipate excess powder.
  • the gap advantageously forms with suitable dimensioning a powder cone, so that subsequent falling powder is discharged obliquely laterally downwards.
  • the individual punch carriers are constructed modularly also with a view to synchronization bars.
  • a press device with at least one synchronization rod for synchronizing a rectified and equidistant movement of an upper press block element with respect to at least one of the punch carrier, wherein the synchronization rod passes through synchronization rod through openings in modular stamp carrier plates, which laterally protrude from the stamp carriers arranged above it, and a Synchronization rod stop member to support the synchronization rod on a selected punch carrier plate in the area around the synchronization rod feedthrough opening around.
  • Synchronizing rods serve to synchronize movement of an upper press block with the movement of one or more punch carriers to synchronously lower the powder chamber formed with the powder upon powder contact of the upper plate with the powder filled into the die opening, which is also commonly referred to as powder transport.
  • synchronization rod through openings are formed in the stamp carriers or in the stamp carriers projecting laterally from the stamp carriers so that a synchronization rod extending down from the upper press block can, in principle, be passed through all the stamp carrier plates from above.
  • the synchronization rods are provided with a synchronization rod stop member having a larger circumference than the corresponding synchronization rod through holes underneath.
  • such a synchronization rod stop member is formed in a flange or shoe shape so as to support and thereby synchronize the synchronization rod on the surface around the synchronization rod feedthrough opening of a selected punch carrier plate.
  • the support devices support device spacers, punch carrier, punch carrier plates, punch carrier height adjustment devices and / or height limit stop elements is formed modularly assembled.
  • the punch carriers are usually movable by means of piston / cylinder arrangements relative to the main body in filling and pressing positions.
  • a press device for pressing dimensionally stable compacts of powdery or granular material, in particular iron powder, ceramic powder or the like, from a plurality of assemblies.
  • a lower press block formed by a base plate 0, punch carriers 1, 2, 3 and 4, a die holding plate 5 and a lower connecting device 71, and an upper press block 6 superimposed in a framework of tie rods 70, 73 and the like are arranged.
  • the upper press block 6 preferably arranged in mirror image comparable assemblies have as the lower press block.
  • the upper press block 6 can be formed, for example, by an upper connecting device, an upper base plate and punch carrier.
  • the base plate 0 can also be referred to more generally as a base body and serves to receive, inter alia, hydraulic piston-cylinder arrangements 72 which serve to adjust the punch carriers 1 - 4 arranged above relative to the base plate 0.
  • the stamp carriers 1 - 4 consist essentially of two components, in each case an actual punch carrier 1 - 4 and a laterally projecting from this punch carrier plate 1a - 4a.
  • the punch carrier plates have pull-through holes 70c through which the tie rods 70 are passed, so that the individual punch carrier plates 1a-4a can be displaced along the tie rods 70 together with the punch carriers 1-4 in the pressing direction.
  • the punch carrier plates 1a-4a have piston rod through holes 72b for passing the cylinder-piston rods 72a, which extend from the hydraulic piston / cylinder assemblies 72 from the base plate 0 through the cylinder-piston rod through holes 72b to the cylinder-piston rod through holes 72b
  • Stamp carrier plate 2a, 3a, 4a are guided, which is to be adjusted relative to the base plate 0 with the help of the corresponding cylinder-piston assembly.
  • the cylinder-piston rods 72a are attached or supported such that the corresponding punch carrier plate 2a, 4a can be lifted by means of the associated cylinder-piston rod 72a upwards.
  • a cylinder-piston rod stopper 72c is disposed on the upper side, the lateral circumference of which is larger than the diameter of the cylinder-piston rod passage opening 72b, so that it has the associated punch carrier plate 4a in the area around the associated cylinder Attached from the bottom-piston rod-through opening 72b around.
  • the punch carrier plates have central openings 1e, 2e for passing the assemblies arranged centrally about the axis 74, in particular punches, punch carriers and supporting devices.
  • the lower connecting device 71 has a coupling device for coupling to a lower press ram of a hydraulic press or the like.
  • the upper press block 6 has a corresponding upper connecting device with a coupling device for coupling to an upper press bear.
  • an adapter 7 is formed by such an arrangement with the connecting means 71, which can be prepared as a tool carrier outside a press for appropriate purposes and set up before he a few steps in a press. This requires correspondingly short downtime for the actual press.
  • guide rods 73 are shown, which are arranged in extension of the tie rods 70 of the framework.
  • the framework thus holds the entire individual components of the adapter 7 together.
  • guide rods 73 between the two press blocks are not mandatory.
  • the lower connecting device 71 After installation of the press device or of the adapter 7 in a press, the lower connecting device 71 is coupled to the lower press bear of the press. About the tie rods 70, of which four preferably lead through the four corner regions of the lower connecting means 71, above the lower connecting means 71, the base plate 0 is arranged. Of course, alternatively, the use of more or less, eg. only one or two tie rods.
  • the base plate 0 has a rectangular outer periphery, wherein the four tie rods 70 pass through corresponding openings in their corner regions.
  • the base plate 0 has on both sides in each case a bearing projection 51, with which the base plate 0 is connected after installation of the adapter 7 with the main press cylinder of the press, that the base plate 0 by means of the main press cylinder in the pressing direction along the central press axis 74 upwards can be pressed or lowered down.
  • the base plate 0 is firmly clamped in the press frame and the connecting device 71 is coupled to the main press cylinder.
  • the base plate 0 serves as a support device for the individual punch carrier 1 - 4 in the final press position, d. H. when the individual punch carrier with the aid of the relative movement of the base plate 0 and the die plate 5 are pressed against each other to the stop.
  • support means 12 - 14 are arranged between the individual stamp carriers 1 - 4 and the base plate 0.
  • the lowermost of the supporting devices 12 serves as a support device for the second punch carrier 2
  • the supporting device 13 arranged above serves to support the third punch carrier 3
  • the supporting device 14 shown above serves to support the fourth punch carrier 4.
  • the illustrated support means consist of two oppositely disposed lateral support elements 12a, 13a, 14a, which are arranged partially cylindrical around the central press axis 74 around.
  • the lateral support elements 12a, 13a, 14a each have at least one support surface 12b, 13b, 14b on which the stamp carriers 2, 3 and 4 are supported.
  • supported on this or another support surface 12c above support means 13 are supported.
  • the bearing surfaces 12b, 13b, 14b are formed for the punch carrier 2, 3 and 4 are substantially annular and connect the respective oppositely disposed side support members 12a, 13a and 14a of the support means 2, 3 and 4 respectively.
  • the free interior space between the respective lateral support elements 12a, 13a, 14a, which are arranged opposite one another, is dimensioned in such a way that a central one is provided by the latter Center pin and each of the punch carrier 1 - 3 arranged below support means 0, 1, 2, 3 to the die 5 can be performed towards.
  • the lowermost support device 12 of this kind has a central passage opening for passing through the center pin 75 and the first stamp carrier 1.
  • the second supporting device 13 disposed thereover has a wider central through-opening for passing through the center pin 75, the first stamp carrier 1 and the second stamp carrier 2, the second stamp carrier 2 and the second supporting device 13 both being supported on the lower supporting device 12.
  • the third supporting device 14 supported on the upper side on the second supporting device 13 has an even more widened central opening for passing the center pin 75, the first stamp carrier 1, the second stamp carrier 2 and the third stamp carrier 3.
  • a clamping plate 8 is arranged above them.
  • the clamping plate 8 is spaced by means of clamping plate support elements 81 of the uppermost support means 14 to this arranged on the support surface 14c.
  • the clamping plate 8 is clamped by means of a tie rod connection against the base plate 0.
  • a Glasankerverschreib consists of a clamping screw 82 which is screwed into a clamping screw receiving bore 82c in the base plate 0 and upward through clamping screw through openings 82b in the lateral support members 12a, 13a, 14a of the support means 12, 13, 14th is guided.
  • the clamping screw 82 leads into a tie rod clamping element 83, which rests with its lower end circumference on the support surface 14c of the upper support means 14 as a clamping abutment for bracing the support means 12, 13, 14 against the base plate 0.
  • the clamping screw 82 leads into a central end-side threaded bore of the tie rod clamping element 83, so that by a rotation of the tie rod tensioning element 83 whose lying on the support surface 14c of the upper support means 14 end face the superposed support means 12, 13, 14 braced against the base plate 0.
  • the tie rod clamping element 83 in the upper end face a threaded bore for receiving a screw 84, whose shaft is passed through a corresponding hole in the clamping plate 8.
  • the clamping plate 8 has a central passage opening 86, which is formed larger than the central through-opening by the uppermost support means 14, in addition to the center pin 75 and the stamp carriers 1, 2 and 3 also supported on the top support means 14 punch carrier 4 in the direction to pass the die 5. For these elements passed through a guide function is thus also provided.
  • the bracing of the support devices 12, 13 and 14, which are arranged one above the other in individual planes, against the base plate 0 thus biases a central tower, as shown in FIG Fig. 3 is shown. Due to the compact clamping during the pressing processes, the prestressed tower offers a stable guiding function for the individual punch carriers and punches arranged thereon.
  • the tension plate 8 by forming the tension plate 8 with such a large diameter, the tension rods 70 for the press frame between the die holding plate 5 and the connector 71 are passed through the pull-through passage holes 70a. This is advantageous in comparison to conventional arrangements, since the tie rods 70 on the distance between the die-holding plate 5 and the connecting device 71 through correspondingly tight fitting pull-through passage openings 70a obtained a stable intermediate guide.
  • the lateral support elements 12a, 13a, 14a of the support means 12, 13, 14 formed on the side remote from the central press axis 74 side lower than on the side facing the central press axis 74 towards side.
  • the respective bearing surface 12b, 13b, 14b for the punch carriers 2, 3 and 4 is at a higher level than the corresponding bearing surface 12c, 13c, 14c for the above-arranged supporting devices 3, 4 or tie rod clamping elements 83 and clamping plate Support elements 81.
  • support device spacers 12d and 13d, respectively, are inserted between the support surface 12c, 13c and the underside of the corresponding side support element 13a, 14a.
  • the height of the support devices 3, 4 arranged above and thus also their support surface 13b, 14b for the punch carriers 3, 4 can be varied in a simple manner .
  • the width of the lateral support members 12a, 13a, 14a tapers from level to level upwards to allow a correspondingly larger central opening for the punch carrier.
  • a gap 13f is left between the outer peripheral walls of the wall portions 13e projecting from the step to the central axis 74 and the adjacent support means spacer 13d.
  • This gap 13f is used to dissipate powder 85, which as excess or misguided powder 85 next to the punch carrier 3 on the support surface 13b for this stamp carrier 3 falls down.
  • Such powder 85 can enter the gap 13f in particular during adjustment movements and is automatically removed laterally from the gap 13f after the formation of a bulk cone 85a, so that this misdirected powder 85 is led away from the tower-like structure to at least the base plate 0, whereby wear or even deadlocks during operation can be reduced.
  • the bearing surfaces 12b, 13b, 14b for the punch carrier 2, 3 and 4 are formed such that they protrude in the direction of the central axis 74 in the lead-through space, which by the formed below the support surfaces 12b, 13b, 14b located inner peripheral wall of the support means 12, 13, 14 is left.
  • the size of the passage opening is thus determined by the projecting portions 12g, 13g, 14g. Below this protruding portions 12g, 13g, 14g is between a guided through stamp carrier 1, 2 or 3 and the inside wall of the punch carrier support means 12, 13, 14 a free space for guiding a height limit stop member 1b, 2b and 3b left.
  • the underside of the space projecting portion 12g, 13g, 14g with its lower surface serves as a support stopper member.
  • the support device stop element 12g, 13g, 14g thus serves with its underside as a counter stop for the upper side of the height limit stop element 1b, 2b and 3b of the die carrier 1, 2 and 3, respectively, towards the central axis 74 in the passage opening to the support device. Stop element is directly adjacent.
  • the height limiting stop elements 1b, 2b, 3b are advantageously cylindrical and formed with an internal thread, wherein the internal thread in a corresponding external thread on the outer circumference of the punch carrier 1, 2 and 3, respectively intervenes.
  • the height of the height limit stop members 1b, 2b, 3b on the outer circumference of the punch carrier 1, 2 or 3 by simply screwing these against each other about the central axis 74 around are varied.
  • the support device stop elements serve 12g, 13g, 14g at the same time with its upper surface as a support surface 12b, 13b and 14b for the above arranged and supported punch carrier 2, 3 and 4.
  • the support means 12, 13, 14 at the same time serve the support means 12, 13, 14 at the same time as fixed stops for the attached punch carrier 2, 3 and 4 in the Pressend ein.
  • a fixed-stop adjusting device is arranged in the transition region between the bearing surface 12b, 13b, 14b for the punch carriers 2, 3 and 4 and the stamp carriers 2, 3 and 4 respectively.
  • Such a height adjustment device can in a known manner, for example as shown in DE 40 00 423 C2 taken individually, are formed from stacked ring elements with a facing inclined plane.
  • a fixed stop setting device or punch carrier height adjustment device 2c which is constructed from a cylindrical element 2c with an internal thread, which engages in a corresponding external thread on the outside surface of the punch carrier 2.
  • This provides an arrangement which has a support device 2c which is stationary relative to the supporting support 12 and a punch carrier element 2d which is stationary relative to the punch carrier 2, which in particular are cylindrical in one another and have interengaging threads.
  • the height limit stop members 1b, 2b, 3b serve height adjustment drives 90 and 91.
  • these height adjustment drives 90, 91 may be constructed in a manner known per se.
  • the height adjustment drive 91 is preferred, which in Fig. 5 is shown.
  • the pitch ratios and pitch directions of the individual thread devices involved should be adjusted such that the height adjustment drive 91 is preferably moved to the same extent as the height limiting stop element 1b relative to the punch carrier 1 up or down.
  • the illustrated height adjustment drive 91 has a hand crank 92 for actuation, but alternatively a motor drive can also be used. Together with the hand crank 92, a shaft 93 is rotated, which leads into a screw housing 93 a. In the worm housing 93a, the rotational movement of the shaft 93 is converted into a rotational movement of a threaded spindle 94, which projects from below into the worm housing 93a.
  • the threaded spindle 94 leads downward through the punch carrier plate 1a of the punch carrier 1 and has in its lower outer circumference an external thread which engages in an internal thread of a threaded spindle receiving bore 94a in the punch carrier plate 1a.
  • the threaded spindle 94 is thus set in rotation, which causes the threaded spindle to be unscrewed from the threaded spindle receiving bore 94a upwards or downwards effected.
  • the hand crank 92, the shaft 93 and the screw housing 93a also move upwards or downwards.
  • the threaded spindle 94 has a toothed wheel 95 which rotates together with the threaded spindle 94 about its axis of rotation.
  • the toothed wheel 95 engages with its teeth in teeth formed on the outer periphery of the height limit stopper member 1b.
  • the height-limiting stop element 1b is thus set in rotation about the central axis 74.
  • the height limiting stop element 1b is moved upwards or downwards by the rotation about the punch carrier 1.
  • the threaded spindle 94 and the threaded spindle receiving bore 94a is together with the movement of the height limiting stop member 1b up or down and the entire height adjustment drive 91 upwards or moved down.
  • the toothed wheel 95 thus always remains in engagement with the peripheral teeth of the height limit stop member 1b, so that the latter can be formed as a relatively low-height component.
  • corresponding threaded spindle receiving bores 94b are provided in possibly colliding components with sufficient play.
  • Such threaded spindle receiving bores 94b can also serve for improved guidance of the height adjustment device.
  • the shaft 93 by a guide device 93 b lead which has an upwardly and / or downwardly projecting member which on an outer wall of adjacent components, for. B. the base plate 0, sliding and thus leader rests.
  • the punch carrier 1 preferably consists of a plurality of individual elements which are arranged on the punch carrier plate 1a.
  • an upper punch carrier section 1g which takes over the actual function as a punch carrier.
  • the fixed stop adjustment for height adjustment of the fixed stop is below the punch carrier plate 1a.
  • This preferably consists of a lower punch carrier portion 1d, which with the upper punch carrier portion 1g by means of, for example, a screw 1f, which passes through a corresponding bore in the punch carrier plate 1a, is screwed.
  • the upper punch carrier portion 1g has an outer peripheral thread which engages with the height limit stopper member 1b.
  • the lower punch carrier portion 1d also has an external thread, which engages with the fixed stop setting device 1c, so that by a mutual rotation of the latter components 1d, 1c, a height adjustment of the punch carrier 1 and the punch carrier plate 1a relative to the base plate 0 or in higher Levels opposite the support means 12, 13, 14 is made possible.
  • the support means 12, 13, 14 with a support member 12g, 13g, 14g slightly projecting into the passage opening towards the central axis 74, advantageously a double function as a stop element is made possible.
  • the upper support surface 12c serves the upper support surface 12c.
  • the lower side of the support device elements 12g, 13g, 14g serves as a counter stop for the upper edge of the corresponding height limit stop elements 1b, 2b and 3b on the outer circumference of below the support means 12, 13, 14 supported stamp carriers 1, 2 and 3. This allows a space-saving and at the same time modular arrangement with still high stability during pressing movements and in the final press position.
  • the modular arrangement of the individual elements is also equipped with regard to a synchronization arrangement for the phase of powder transport.
  • powder transport after filling the die opening 5a in the die with powder and lowering the upper punch from the upper press block 6 to a powder contact, the formed powder chamber is lowered synchronously downward, the upper punch (s) synchronizing with one or more punches of the lower one Press blocks are lowered.
  • synchronization rods 55 received in the upper press block 6 lead downwardly through synchronization rod feedthrough openings 56 in the die plate 5 and die carrier plates 2a, 3a, 4a to a punch carrier plate 4a which synchronizes with movement of the upper Press block is to be moved.
  • the synchronization rod through openings 56 are formed.
  • a screw can be made for fastening the synchronization rod 55 on the selected punch carrier plate 4a.
  • the synchronization rod can also be put on a flange 57 or attached to a shoe 57, whose outer circumference is greater than the diameter of the synchronization rod-through opening 56, so that presses the synchronization rod with the flange or shoe 57 against the top of the selected punch carrier plate 4a.
  • two synchronization rods 55 are expediently guided diagonally opposite one another to a selected punch carrier plate 4a. In principle, however, it is also possible to use even more or fewer synchronization rods, as also applies to tie rods 70 and the like.
  • the arrangement of strain or compression measuring devices 80 on the fixed stops and / or the stamp carriers With such measuring devices, the actual compression during pressing can be determined, whereby a correction of the pressing force and / or the adjustment of height adjustment of the individual punch carrier can be controlled or regulated. It is thus also possible to check the constant powder quality with regard to e.g. Changes to the powder batch used. Just by a support of the stamp in power line such a measuring method in comparison to previous arrangements makes sense, since previous the measurements falsifying bending effects of the punch carrier in the above concept are negligible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Powder Metallurgy (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
EP03026748.8A 2002-11-22 2003-11-21 Presseneinrichtung zum Herstellen masshaltiger Presslinge aus pulverförmigem Material Expired - Lifetime EP1422050B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10254656A DE10254656B4 (de) 2002-11-22 2002-11-22 Presseneinrichtung zum Herstellen maßhaltiger Presslinge mit zentraler Stempelabstützung
DE10254656 2002-11-22

Publications (3)

Publication Number Publication Date
EP1422050A2 EP1422050A2 (de) 2004-05-26
EP1422050A3 EP1422050A3 (de) 2006-01-04
EP1422050B1 true EP1422050B1 (de) 2014-11-05

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EP03026748.8A Expired - Lifetime EP1422050B1 (de) 2002-11-22 2003-11-21 Presseneinrichtung zum Herstellen masshaltiger Presslinge aus pulverförmigem Material

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Country Link
US (1) US7229263B2 (es)
EP (1) EP1422050B1 (es)
DE (1) DE10254656B4 (es)
ES (1) ES2528654T3 (es)

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EP1849590B1 (de) 2006-04-29 2013-05-15 Fette GmbH Presse
EP1849591B1 (de) 2006-04-29 2016-02-03 Fette GmbH Presse
AT505947B1 (de) * 2007-11-14 2016-04-15 Miba Sinter Austria Gmbh Verdichtungswerkzeug
EP2376247B8 (en) * 2009-01-12 2019-12-25 Metal Additive Technologies Process for manufactirung multilevel parts from agglomerated spherical metal powder
DE102010051513A1 (de) 2010-11-16 2012-05-16 Dorst Technologies Gmbh & Co. Kg Keramikpulver- und/oder Metallpulver-Pressenwerkzeug, Keramikpulver- und/oder Metallpulver-Presse, modulares System mit einem solchen Pressenwerkzeug, Verfahren zum Zusammensetzen eines solchen Pressenwerkzeugs
DE102011050971B4 (de) * 2011-06-09 2014-04-03 Rekers Verwaltungs-GmbH & Co. KG Steinformmaschine mit lineargeführtem Tragelement
DE102011118054A1 (de) 2011-11-09 2013-05-16 Dorst Technologies Gmbh & Co. Kg Verfahren und Presse zum Pressen eines Presskörpers aus zumindest zwei verschiedenen metallischen und/oder keramischen pulver-und/oder granulatförmigen Materialien
DE102014003726A1 (de) * 2014-03-18 2015-09-24 Gkn Sinter Metals Engineering Gmbh Presse zum Herstellen maßhaltiger Grünlinge und Verfahren zum Herstellen
CN105398077A (zh) * 2015-12-15 2016-03-16 常州市科诺电子设备有限公司 用于压机的框架主板
DE102016120195A1 (de) 2016-10-24 2018-04-26 Dorst Technologies Gmbh & Co. Kg Presseneinrichtung
DE102017114457B4 (de) 2017-06-29 2019-08-08 Gkn Sinter Metals Engineering Gmbh Ebenenplatte eines Pressenwerkzeugs
DE102017114456B4 (de) * 2017-06-29 2019-08-08 Gkn Sinter Metals Engineering Gmbh Ebenenplatte eines Pressenwerkzeugs
EP3530446B1 (de) 2018-02-26 2024-05-01 Osterwalder AG Pulverpresse mit kniehebelantrieb und elektrischem antrieb
CN113042619A (zh) * 2019-12-26 2021-06-29 广东利元亨智能装备股份有限公司 一种防卡死的电池封装设备的冲坑结构及方法
US11724300B2 (en) 2021-02-19 2023-08-15 Wilson Tool International Inc. Die shoe assemblies configured for shimless adjustment
CN115891014B (zh) * 2022-12-20 2023-09-15 佛山市缇诺卫浴有限公司 一种智能人造石制造装置

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Also Published As

Publication number Publication date
US20040137100A1 (en) 2004-07-15
ES2528654T3 (es) 2015-02-11
DE10254656B4 (de) 2005-10-13
DE10254656A1 (de) 2004-06-09
EP1422050A3 (de) 2006-01-04
EP1422050A2 (de) 2004-05-26
US7229263B2 (en) 2007-06-12

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