EP2646181A1 - Disque de pression - Google Patents

Disque de pression

Info

Publication number
EP2646181A1
EP2646181A1 EP11790964.8A EP11790964A EP2646181A1 EP 2646181 A1 EP2646181 A1 EP 2646181A1 EP 11790964 A EP11790964 A EP 11790964A EP 2646181 A1 EP2646181 A1 EP 2646181A1
Authority
EP
European Patent Office
Prior art keywords
sealing ring
ram
press
pressing
ring
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.)
Granted
Application number
EP11790964.8A
Other languages
German (de)
English (en)
Other versions
EP2646181B1 (fr
Inventor
Horst Heydasch
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.)
Horst Heydasch Dummy Block & Co KG GmbH
Original Assignee
Horst Heydasch Dummy Block & Co KG GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Horst Heydasch Dummy Block & Co KG GmbH filed Critical Horst Heydasch Dummy Block & Co KG GmbH
Priority to SI201131983T priority Critical patent/SI2646181T1/sl
Publication of EP2646181A1 publication Critical patent/EP2646181A1/fr
Application granted granted Critical
Publication of EP2646181B1 publication Critical patent/EP2646181B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/085—Making tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C26/00—Rams or plungers; Discs therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/065—Press rams

Definitions

  • the invention relates to a dummy block for mounting on the ram of a
  • the pressure disk comprises at least one filler with a pressing surface over which a force can be exerted on a material to be pressed.
  • the filler is surrounded by a likewise belonging to the pressure washer sealing ring, which is designed with its inner diameter so that it forms a first gap with its inner cone surface and the outer cone surface of the filler. Between the filler and the sealing ring further extends at least one radial gap which widens conically from the inside out.
  • the invention further relates to a pressing device with such a pressure washer.
  • presses which comprise pressure disks with which pressure can be transmitted to the material to be pressed.
  • Press discs are generally rotationally symmetrical and are located during the pressing process in a transducer which encases them. In general, there is the
  • Pressing disc made of a metal such as hot-work steel.
  • German Patent DE 100 36 463 B4 discloses an advantageous pressure disk and a pressing device with such a pressure disk, in which the pressure disk comprises a filler with a pressing surface, with a force on a to pressing material can be exercised.
  • the filler is surrounded by a sealing ring which is designed with its inner diameter so that it forms a first gap with its inner cone surface and the outer cone surface of the filler. Between the filler and the sealing ring further extends at least one radial gap which widens conically from the inside out.
  • this includes various components that could for example also be made in one piece to reduce the number of components.
  • this is not possible with this known dummy block, without the functionality and life of the dummy block considerably
  • WO 98/03 277 A1 is a press plate with a base part, a
  • an exchangeable locking ring which at a front, circumferential region of the
  • the press plate includes a device for latching the press pot in the locking ring during pressing.
  • the locking ring is made of metal and has a conical inner surface which converges towards the base part.
  • the device for latching the press pot in the lock ring contains a metallic plunger with a face surface with a conical surface, wherein the plunger end face is pressed into the ring during pressing. The converging surfaces of the ring and ram face are spaced to prevent dipping of the ram into the ring.
  • German utility model DE 73 14 414 U describes a press washer for press punches of extruders, wherein the press plate has an end-side, the pressed material facing circular recess, and further comprising a conical seat for abutment of an inner plate which terminates flush with the pressed disk end face in the applied state, having.
  • German patent application DE 41 32 810 discloses a solid press washer for the press die of a metal extrusion press with venting device. Due to the convex configuration of the press material facing side of the pressure plate, the trapped during the upsetting of the billet in the recipient chamber air over the not yet spread wear ring escape, as well as in the spreader
  • the object of the invention is therefore to provide a pressure washer with efficient ventilation high wear resistance and thus high durability, which has the lowest possible height and the wearing parts can be easily mounted and dismounted from the front, without the need for a variety of other components also mounted and have to be dismantled.
  • the object of the invention is also to provide a pressing device with such a pressure washer.
  • this object is achieved by a pressure washer having the features of independent claim 1.
  • Advantageous developments of the dummy block will become apparent from the dependent claims 2-14.
  • the object is further achieved by a pressing device according to claim 15.
  • Advantageous embodiments of the pressing device emerge from the subclaims 16-17.
  • the pressure washer according to the invention according to the preamble of claim 1 is characterized in that over a rotation of the sealing ring about the axis of rotation of the pressure plate depending on the direction of rotation a backup of the pressure plate on the ram against axial movement produced or solvable, whereby the sealing ring and the filler of the front of the dummy block are mounted on the ram and disassembled.
  • the wearing parts such as the filler and the sealing ring can be mounted and disassembled in a simple manner from the front.
  • Decisive for the operation of the dummy block according to the invention is, however, also that the withdrawal forces are transmitted via the connecting element to the sealing ring.
  • the sealing ring spreads limited even at maximum pressure and is not loaded in the return movement in the cone, so that spreading by friction forces on the transducer is prevented. Furthermore, a bending stress is generated, which greatly reduces wear on the pressure disk, in particular the conical surfaces, and widens the pressure disks at the desired time. Due to the radial gap between filler and sealing ring this bending moment is made possible in the filler, which leads to a greater wear resistance of the filler and thus the dummy block. Furthermore, the pressure is centered on the material to be pressed when upsetting the pressure
  • the sealing ring retains its elasticity despite the low height.
  • at least a part of the end face of the connecting element with at least a part of the surface of the adapter piece, and at least a part of the pressed material opposite surface of the sealing ring also with at least a part of the surface of the adapter piece in contact when the
  • Press disc is subjected to pressing pressure. Due to the elasticity of the used
  • Hot-work steel For diameters of the pressure disc from 6 inches to 25 inches, this construction can be achieved lowest heights in the order of 40mm to 105 mm, if one regards as the height of the dummy disk about the distance between the pressing surface and the ram or an adapter piece of the ram , In this case wear fasteners that protrude into the ram or in an adapter piece of the press ram, in the context of this invention does not contribute to the height of the dummy block.
  • the above heights of the dummy block should not constitute a limitation of the invention, but even with larger heights causes the structure of the dummy block according to the invention, in particular during assembly and disassembly and replacement of wearing parts.
  • the connecting element used can be realized in various ways, wherein all embodiments have in common that the withdrawal forces on the respective connecting element to the sealing ring can be transferred and the wearing parts of the
  • Pressing disc over a rotation of the sealing ring about the axis of rotation of the dummy block from the front are mounted or dismounted.
  • the pressing disc comprises the connecting element, and the sealing ring is connected to the connecting element such that a rotation of the sealing ring about the connecting element
  • Rotation axis of the pressure plate causes a rectified rotation of the connecting element about the axis of rotation of the pressure plate.
  • a securing of the connecting element to the press ram against axial movement can be produced or released, and together with the sealing ring and the filler piece, the connecting element can also be mounted and dismounted from the front side of the press disk on the press ram.
  • the connecting element may for example be a connecting bolt, which can be secured against axial movement on the press ram and projects through the sealing ring into the filling piece, wherein the connecting bolt is formed so that it can be both the
  • the connecting pin and the filler can also be designed as a one-piece component, which can further facilitate the production of the dummy block.
  • the connecting element is a connecting ring which surrounds an adapter pin, wherein the adapter pin on
  • Press ram is secured against axial movement on the ram, and secured the connecting ring against axial movement of the adapter bolt.
  • the sealing ring is secured against a rotational movement of the connecting ring, and rotating the sealing ring about the axis of rotation of the pressure plate causes a rectified rotation of the connecting ring about the axis of rotation of the pressure plate, whereby depending on the direction of rotation, a compound of the connecting ring with the
  • Adapter bolt can be produced or solvable.
  • the connection between the connecting element and the sealing ring can comprise at least one pin connection.
  • the respective connecting element may have at its periphery at least one step with a substantially radially extending traction surface, so that over this traction surface the retraction force of the press ram can be transferred via the connecting element to the sealing ring. This has the advantage that the retraction force can be directed specifically to a specific surface of the sealing ring.
  • the pressing ram comprises the connecting element, and by rotating the sealing ring about the axis of rotation of the pressing disk, depending on the direction of rotation, a securing of the sealing ring to the connecting element can be produced or released against axial movement.
  • the sealing ring and the filling piece can be mounted and dismounted from the front side of the pressing disk on the pressing die, while the connecting element remains on the pressing die.
  • Connecting web is that projects into a corresponding, also circumferential recess in an opposing component.
  • the filler is independent of this connecting element secured against axial movement on the sealing ring, and between the connecting web and the recess are means for producing and releasing a fuse between the sealing ring and the ram against axial movement intended. About this means the retraction force of the press ram on the connecting web and thus the sealing ring is transferable.
  • the connecting web can thus on the sealing ring or on the ram or a
  • Adapter piece of the press ram be attached, and the corresponding circumferential recess is in each case attached to the respective other component that the
  • Press stamp is attached. Which of these two arrangements is selected, can be made dependent on the dimensions of the dummy block, since the connecting web can be provided, for example, on the sealing ring and the recess in the ram, if there was not enough space for the recess otherwise in the sealing ring.
  • the means for producing and releasing a lock between the sealing ring and the pressing ram against axial movement can comprise, for example, a bayonet lock.
  • a bayonet lock In each case, at least two bayonet cams are provided on the outer edge and / or on the inner edge of the connecting web, while corresponding guide grooves for receiving these bayonet cams are provided on the outer and / or inner edge of the recess.
  • the press disk can be mounted or dismounted by means of the bayonet closure by a simple plug-and-turn motion on the press ram. It offers the
  • this embodiment with circumferential connecting web and bayonet has the advantage that it can be achieved by a floating mounting of the dummy block for all types of the dummy block.
  • the presser plate may include an intermediate member disposed between radial surfaces of the sealing ring and the filler. In at least one pressure-loaded surface of this intermediate element, at least one groove can be introduced.
  • the intermediate element may consist of a material which has a lower hardness than the material of the filler and / or the sealing ring. If the filler is mounted in a floating manner between the sealing ring and the connecting element, the filling piece may preferably have an abutment surface extending essentially axially in the direction of the pressing ram, which lies opposite an identically extending contact surface of the sealing ring, wherein the contact surface of the sealing ring adjoins the sealing ring Inner cone surface connects.
  • the radial distance between these two contact surfaces is then preferably smaller than the radial distance between the inner cone surface of the sealing ring and the outer cone surface of the filler.
  • a pressing device which is one such
  • Pressing disc according to the invention comprises.
  • an anti-rotation is provided between the sealing ring and the ram, which can be carried out in various ways.
  • the ram comprises an adapter piece and an outer ring extending around it with two
  • the sealing ring is secured by means of at least one pin connection against a rotational movement on the outer ring, and the other end face of the outer ring is aligned in the direction of a connecting surface of the adapter piece. This other face of the
  • Outer ring and / or the opposite connection surface of the adapter piece have a groove portion with a plurality of radial half-grooves, and in at least two opposite half-grooves, a connecting pin can be introduced.
  • a connecting pin By provided on both sides of the outer ring receptacles for connecting pins is a
  • Fig. 1 is a pressure washer according to the prior art
  • Fig. 2 is a schematic view of a first embodiment of a
  • connecting element is a connecting pin
  • Fig. 3 is a schematic view of a second embodiment of a
  • Connecting ring is and an adapter bolt forms part of the pressing surface
  • Fig. 4 is a schematic view of a third embodiment of a
  • Fig. 5 is a schematic view of a fourth embodiment of a
  • Fig. 6 is a schematic view of a fifth embodiment of a
  • Fig. 7 is a schematic view of a modification of the embodiment according to
  • Figure 6 shows a schematic view of a sixth exemplary embodiment of a pressure disk according to the invention in conjunction with the press die of a pressing device, wherein the connecting element is a connecting web on the press-type threaded die; and
  • Fig. 9 is a schematic view of a modification of the embodiment according to
  • FIG. 1 shows an exemplary embodiment of the prior art pressure washer explained at the beginning.
  • the pressing disc consists of a press-disc core 5, on which by means of a centering pin 4 as a fastening means in a central region conically outwardly shaped filler 3 is screwed into a stored in the press-disc core 5 nut 6, wherein the filler has a pressing surface 16.
  • the nut 6 is locked by a locking pin 7.
  • the filler 3 surrounds a sealing ring 1, on which in turn an intermediate ring 2 is placed, which also surrounds the press-disc core 5. Between the sealing ring 1 and filler 3, a radial gap 3A is formed. On the intermediate ring 2, a further support plate 9 is deposited.
  • Support disc 9 is a ram 1 1 deposited, which also from the tie rod 12th
  • the invention can be realized in different ways, wherein different applications may require different embodiments, which are adapted to the respective conditions. For example, it may be for the embodiment of
  • FIG. 2 shows a first embodiment of a pressure washer according to the invention in a schematic half-section, in which the connecting element is designed as a connecting pin 60 which is screwed into a bore in the ram 20 and an adapter piece 21 on the ram.
  • This connecting pin protrudes through the sealing ring 40 into the filling piece 30 and is conically shaped at its front end in order to hold the filling piece in a form-fitting manner.
  • the front surface of the connecting bolt 60 thus complements the pressing surface 32 of the filler 30 as a pressing surface 63, wherein the entire pressing surface thus formed drops, for example at the junction of connecting pin 60 to the filler 30 and is thus curved outwards.
  • the central region of the entire pressing surface first comes into contact with the pressed material.
  • the filler 30 surrounds a sealing ring 40, wherein between the outer cone surface 31 of the filler 30 and the inner cone surface 41 of the sealing ring 40 preferably a gap 50 is provided.
  • the sealing ring is designed with its inner diameter so that it has a minimal contact with the outer cone surface 31 of the filler 30 or with this Conical surface forms the gap 50, as long as the pressure plate exerts no pressure on the material to be pressed.
  • a further radially symmetrical gap 51 which widens conically from the inside out.
  • the inner cone surface 41 of the sealing ring 40 is largely unloaded when the upsetting process is initiated.
  • the resulting pressure is transmitted to the sealing ring 40 in the region of the radial gap 51.
  • This causes the still located in the transducer air can escape because the sealing ring 40 is not pressed at the beginning of the pressing to the outside.
  • After complete pressure load of the filler 30 this is pressed under bending stress in the sealing ring 40.
  • the sealing ring 40 spreads at the well-defined time when the air has escaped and seals. The escape of air also causes the pressure is not disturbed by air pockets, and there are defects in the extruded material.
  • the filling piece 30 assumes its initial shape and the sealing ring 40 is relieved.
  • Connecting bolt 60 and / or between the sealing ring 40 and the connecting bolt 60 is preferably a game on the order of 0.1 to 1, 4 mm provided on the diameter to achieve a floating mounting of these components with respect to the connecting bolt 60.
  • the connecting pin 60 has at its periphery a step with a radially extending traction surface 66. This tension surface 66 is applied to the sealing ring 40 and in the withdrawal movement of the ram is the
  • the connecting pin 60 and the filler 30 may also be designed as a one-piece component, so that the tension surface 66 for the Transmission of the retraction force is formed by the stepped transition between these two areas.
  • the height of the dummy block over known pressure plates can be significantly reduced without the
  • the assembly and disassembly of the wear parts in the form of the sealing ring 40 and the filler 30 can be done in a simple manner via the connecting pin 60.
  • the sealing ring 40 is positively connected to the connecting pin 60, which
  • connection 90 can take place, as shown in the figure 2.
  • This connection causes a rotation of the sealing ring 40 about the axis of rotation of the pressing plate 10 causes a rotation of the connecting bolt 60.
  • the connecting pin 60 thus in the
  • Press die 20 or the adapter piece 21 of the ram 20 are screwed or rotated out of this, which directly establishes or dissolves the connection of the pressure plate 10 with the ram due to the construction of the dummy block 10.
  • the filler 30 and the sealing ring 40 can be assembled and disassembled so quickly and easily from the front, the sealing ring 40 can be rotated via a recording 91 shown in dashed lines at its periphery with a matching key. To after installation of the dummy block 10 a rotation against the
  • the press-facing surface of the sealing ring 40 can be connected to a pin connection on the press die or an adapter piece.
  • a plurality of bores may be provided on the adapter piece and / or on the sealing ring 40 with which this connection could be made in order to have a plurality of fastening points available when the connecting bolt and thus the pressing disk are turned on the adapter. This can also be done via radial
  • Half grooves and radial connecting pins are achieved, and so it would be possible, for example, turn the connecting pin 60 completely or approximately to the end of a Sacklocks in the adapter and the dummy block then in a suitable position against
  • the sealing ring 40 may also bear as in the embodiment shown in Figure 2 on an outer ring 80 and be positively connected thereto via at least one pin connection 70.
  • the associated connecting pin protrudes preferably only as far as necessary in the sealing ring 40 in order not to weaken this too much. Since the sealing ring 40 is not designed to be too high for the intended reduction in the overall height of the entire dummy block 10, this contributes to the advantageous construction of the dummy block.
  • the outer ring 80 is in turn rotatable about an adapter piece 21 of the ram 20 and preferably locked in any required position. This can for example be achieved in that the inner diameter of the outer ring 80 by a
  • Connecting bolt 60 is screwed to the desired position in the adapter 21, wherein the dissolved outer ring 80 can still rotate around the adapter 21.
  • the desired position of the outer ring 80 is then fixed by a reduction of the inner diameter and the resulting clamping force on the adapter 21.
  • pin connections can also be provided between outer ring 80 and adapter 20, which will be explained with reference to the embodiment of FIG.
  • this type of anti-rotation is not limited to the embodiment of Figure 3, but can also be used in other embodiments of the invention.
  • the invention is not limited to the exemplary embodiments described here, but also modifications and in particular combinations of individual features are encompassed by the invention.
  • FIG. 3 shows a schematic half-section of a second embodiment of the pressure washer according to the invention, wherein the connecting element is a stepped Connecting ring 61 and an adapter pin 62 forms a part of the pressing surface.
  • the adapter pin 62 can be detachably screwed into the adapter 21 or be firmly connected to it or integrally formed with the adapter 21.
  • the adapter pin 62 surrounds a connecting ring 61, which serves as a connecting element in the context of the invention, wherein the retraction force can be transmitted to the sealing ring 40 via this connecting element.
  • the retraction force is preferably transmitted via a step on the circumference of the connecting ring 61 with a radial traction surface 66 'which bears against the sealing ring 40 when the pressing ram 20 is retracted together with the adapter pin 62.
  • Connecting ring 61 and the filler 30 and the connecting ring 61 and the sealing ring 40 game can be present in order to realize a floating mounting of these components.
  • the connecting ring 61 widens on its side facing the pressed material
  • the connecting ring 61 protrudes into the filler 30 and also through this, whereby the front of the connecting ring by the pressing surface 64 in
  • the entire pressing surface thus formed tapers at the transition between the connecting ring 61 and the filler piece 30 and is thus curved outwards again.
  • the connecting ring 61 can also be designed so that its front surface covers the adapter pin 62, i. that the front surface 64 of the connecting ring 61 forms the central part of the entire pressing surface of the pressing disk, while the filling piece 30 forms an outer surface.
  • the adapter pin 62 then projects into the connecting ring 61, but does not penetrate it completely.
  • the sealing ring 40 is positively connected via the already described pin connection 90 with the connecting ring 61.
  • Turning the sealing ring 40 about the axis of rotation of the pressure plate 10 thus causes the connecting ring 61 to rotate in the same direction, whereby the pressure plate 10 detaches from the adapter pin 62, which remains in the adapter 21.
  • the rotation of the sealing ring 40 relative to the ram 20 is executed differently from the embodiment of Figure 2 and will be explained here by way of example, but it can also be realized in other embodiments.
  • the sealing ring 40 is connected via a pin connection 71 with the outer ring 80, which may be at least one axially introduced pin or at least one radially introduced pin, as shown in Figure 3.
  • At least one radial half-groove is introduced both in the upper end face 81 of the outer ring 80 and on the lower face of the sealing ring 40, into which a pin can be inserted when the sealing ring 40 is arranged in relation to the outer ring 80. that two opposite half-grooves complement each other to a bore.
  • a plurality of half-slots are mounted in different angles in the outer ring 80 to cover different positions at which one or more half-grooves in the sealing ring 40 can come to rest during assembly of the dummy block.
  • half grooves are provided on its second end face 82, which are, however, arranged offset to the half-grooves on the first end face 81 in different Wnkellagen.
  • On a connecting surface 23 of the adapter piece 21 to the outer ring 80 one or more half-slots are also arranged offset from one another, with the half-grooves on the end face 82 of the outer ring Form holes for introducing at least one connecting pin, when the half-grooves are opposite.
  • Connecting surface to the adapter 21 then provides additional positions for connecting the outer ring 80 with the adapter. Because the half - grooves on the two faces of the
  • Outer ring 80 offset from each other are arranged in different angular positions, there is a sufficient number of positions to turn the sealing ring 40 as close as possible to the adapter 21 and there to secure against rotation can provide in one component on one side too many holes / grooves to have to.
  • FIG. 4 shows a further exemplary embodiment of the pressure disk according to the invention, wherein this schematic half section represents an exemplary embodiment in which the filler piece 30 has a continuous pressing surface 32.
  • connection ring 61 ' which is also provided here as a connecting element.
  • the transfer of the retraction force from the connecting ring 61 'on the sealing ring 40 takes place via a threaded connection, but it can also be a step in the connecting ring can be provided as in the embodiment of Figure 3.
  • the filler 30 and the connecting ring 61' may also be made in one piece,
  • the connecting ring 61 ' still in the context of this invention as the
  • at least part of the pressing force can also be transmitted via the connecting ring 61 'in this embodiment.
  • the retraction force can also be transmitted indirectly from the connecting ring 61 'via the filler 30 on the sealing ring 40, which via a threaded connection between
  • Connecting ring 61 'and the filler 30 can be done. The transfer of
  • Retraction force from the adapter pin 62 'on the connecting ring 61' also takes place via a threaded connection.
  • the connecting pin 90 can simultaneously connect the filler with the connecting ring 61 ', which is shown in dashed lines for simplicity of illustration.
  • An outer ring 80 "can again be used to prevent rotation of the pressure disk 10 relative to the press ram 20, wherein in this embodiment an outer ring with an axial bore and an axial connecting pin 70 is shown, which can be fixed to the adapter 21 as desired 4, a screw can also be provided which is screwed into the connecting bolt or the adapter bolt from the front, the thread of this screw can have a direction of rotation opposite the respective connecting element In the opposite direction, the screw is then screwed in from the front, so that the filling piece 30 is fixed to the adapter bolt, thereby preventing the pressure washer 10 from coming off the adapter bolt in that loosening of the pressure disc can not take place against the direction of rotation of the cap.
  • Such a screw is also suitable as an anti-rotation device when a
  • Connecting ring is designed so that its front surface covers an adapter bolt, i. that the adapter pin protrudes into the respective connecting ring, but not completely penetrate it.
  • FIG. 5 shows an exemplary embodiment of the pressure disk according to the invention with a connecting ring 61 "and an adapter bolt 62", whose configuration and arrangement basically correspond to the embodiment of FIG.
  • the connecting ring 61 "used here does not have a step with a traction surface in order to transmit the retraction force to the sealing ring 40. Rather, the retraction force is transmitted via threaded connections between the connecting ring 61" and the sealing ring 40, as in the exemplary embodiment of FIG and between the connecting ring 61 "and the filler piece, this does not affect the possibility of simultaneous operation
  • Adapter piece 21 ' Again, the positive connection of the sealing ring 40 to the connecting ring 61 "done via a pin connection 90, but does not have to include the filler, since this is held by the expansion of the connecting ring 61" on its front side. Further, also here, the connecting ring 61 "may be designed so that its front surface covers the adapter bolt 62", ie that the front surface 64 of the connecting ring 61 "forms the middle part of the entire pressing surface of the pressure disk, while the filler 30 forms an outer surface. The adapter pin 62 "protrudes into the
  • a self-supporting connecting bolt may alternatively to a threaded connection, with the components in the ram 20 and in an adapter piece 21 of the press ram
  • FIG. 6 shows a fifth exemplary embodiment of the invention, in which the connecting element is a circumferential connecting web 110 which is located on the press ram 20 or an adapter piece
  • the connecting web 21 of the ram 20 is attached.
  • it is a continuous connecting web in a ring shape, which extends around the longitudinal axis of the pressure plate 10 around, but the connecting web can also be executed partially interrupted.
  • the connecting web is attached to that surface of the adapter piece 21, which faces the sealing ring 40 and projects into a corresponding circumferential recess 109, which is provided in the sealing ring 40.
  • the connecting web 1 10 may be formed integrally with the adapter piece 21 or as a separate component that can be fixed to the adapter piece.
  • the circumferential connecting web 110 and the recess 109 are substantially identical in shape, wherein between the connecting web 1 10 and the recess 109 is a slight play in order to rotate the two components against each other.
  • more bayonet cams are provided both on the outer edge and on the inner edge of the connecting web. In this case, only a bayonet cam 1 1 1 on the outer edge and an opposite bayonet cam on
  • bayonet cams on the outer and inner edges can be provided at intervals of 90 °. It is also possible, but only on the outer or inner edge Provide bayonet cams and the bayonet cams of the outer edge can in
  • the bayonet cams engage in guide grooves, not shown, which are introduced into the side walls of the recess 109. These are, for example, each a groove in the longitudinal direction and a transverse groove at the end of the longitudinal groove.
  • the bayonet cams can be inserted into the longitudinal grooves and the connecting web 110 is rotated at the end so that the bayonet catches engage in the transverse grooves and thus prevents further axial movement.
  • a bayonet cam can be formed as an arbitrarily shaped elevation on the circumference of the connecting web 1 10, wherein the bayonet cam projects from the connecting web 110 about 2.5 to 15 mm.
  • the bayonet cam projects from the connecting web 110 about 2.5 to 15 mm.
  • Bayonet cams formed by a circumferential ring with multiple interruptions, wherein the areas between the interruptions form the bayonet cams, which can engage in accordance with broad guide grooves in the recess 109.
  • the filler 30 is connected in this embodiment with connecting web regardless of the selected connecting element with the sealing ring 40.
  • this can be done by a fastening bolt 100, which is screwed into the filler 30 and the sealing ring 40 and additionally secured against rotation by a pin connection 73 shown in dashed lines.
  • the front side of the fastening bolt 100 forms a part of the pressing surface together with the filling piece 30.
  • Fastening bolt 100 is turned on the connecting web 110 and through the
  • Bayonet lock to be secured against axial movement.
  • Pin connection 73 may be provided, wherein the pin used in the in FIG. 6
  • a further screw 120 may be secured against falling out.
  • the retraction force of the ram 20 can in this embodiment on the
  • Tensile surfaces 66 "in the bayonet cams from the adapter piece 21 are transferred to the sealing ring 40, while the pressure forces completely from the front surface of the Connecting web 110 can be added. By venting channels 92, air from the gap 51 can also be discharged laterally over the recess 109 on a short path.
  • compressive forces that are transmitted via the pressed material on the dummy block, both over the end face of the connecting web 110, 110 'between the bayonet cams 1 11, 1 12, 1 11', 1 12 ' be transferred to the corresponding surface in the recess 109, 109 ', as well as on the surface of the adapter piece 21 facing away from the pressed material surface of the sealing ring.
  • connection element any other suitable form of the connecting element is possible.
  • a corresponding double fit can be produced depending on the elasticity of the sealing ring 40 by maintaining a tolerance of a few hundredths of a millimeter, which is easily possible by using appropriate machine tools. For example, compliance with a tolerance of ⁇ 0.03 millimeters has been found to be sufficient for the use of a suitable hot work tool steel for the gasket 40.
  • a suitable hot work tool steel for the gasket 40 Depending on
  • this embodiment can also be modified according to Figure 7 and a circumferential connecting web 1 10 'are formed on the sealing ring 40, while a corresponding recess 109' in the adapter piece 21 is to receive the connecting web 1 10 'during assembly.
  • Corresponding bayonet cams 11 1 'and 1 12' are formed on the connecting web 1 10 ', and also here the pressure plate 10 can be mounted or dismounted by a plug-and-turn movement on the adapter piece 21.
  • Anti-rotation of the sealing ring 40 relative to the adapter piece 21 could in this case be realized by at least one screw 120, which would be screwed into the adapter piece 21 and then into the connecting web 1 10 '.
  • the coordination of the height dimensions of the areas Connecting web 1 10, 11 ', sealing ring 40 and adapter piece 21, 21', 21 can be selected analogous to the previous embodiment.
  • Bayonet cam 11 1, 11 1 'or 112, 112' provide, which brings manufacturing advantages.
  • This embodiment may be advantageous, for example, for smaller diameters of the pressure disk, if there were not enough space in the sealing ring 40 for a suitable connecting web, without weakening the sealing ring 40 too much.
  • Figure 8 shows a sixth embodiment of the invention, in which also as
  • Connecting element a connecting web 1 10 on the adapter piece 21 and a recess 109 in the sealing ring 40 were selected.
  • a thread is provided here, so that the connecting web 110 is screwed into the recess 109.
  • the retraction forces are transmitted via the thread, but to accommodate the pressure forces the entire front surface of the connecting web 1 10 is available.
  • an outer ring 80 and pin connections 71 and 72 can be used, as have been explained with reference to FIG. Air from the gap 51 can be discharged laterally via venting channels 92 again.
  • Figure 9 shows a modification of the embodiment of Figure 8, wherein the structure was reversed as in the embodiment of Figure 7, so that the connecting web 1 10 'are now attached to the sealing ring 40 and the recess in the adapter piece 21. Further, the shape of the sealing ring 40 has been changed and made stepwise to the adapter piece 21, so that the connecting web 1 10 'and thus also the recess 109' at their respective outer and inner edges are of different heights.
  • a sealing ring 40 may be executed in two embodiments, for example, in all embodiments, wherein the two sections of the sealing ring are then connected to each other, for example via a pin connection.
  • the sealing ring 40 can also be formed of more than two parts, which are connected to each other such that a rotation of the outer part causes a rotation of all parts connected thereto. This has the advantage that parts can be replaced individually when worn, which is the case in particular for an outer part, which comprises the inner cone surface 41 and forms with this surface the gap 50 to the outer cone surface 31 of the filler.
  • the sealing ring 40 has in all the illustrated embodiments of the invention outside a greater height than the inside, so that there is a step between these areas of different height, which opens into the bearing surface of the filler 30. At the transition between these two areas, an axial puncture can be provided in the sealing ring in each embodiment. By this puncture, the sealing ring 40 spreads easier at a defined time. Further, 30 may be provided between the radial surfaces of the sealing ring 40 and the filler 30, an intermediate element. This intermediate element brings, for example, the advantage that the aforementioned puncture in the sealing ring 40 does not have to be made so deep, as this may not be possible for manufacturing reasons. Thus, a puncture with a shallow depth can be provided, the intermediate element increases the sealing ring functionally but in the direction of the filler 30 and then forms with the filler 30, the radial gap 51 from.
  • such an intermediate element can also be designed so that its thickness is reduced or more reduced than the thickness of the filler 30 and the sealing ring 40 with continuous pressure load during operation of the dummy block. It can thus be achieved that the gap 51 between the filler 30th and the sealing ring 40 is not adversely reduced due to wear of these components, because by the simultaneous
  • Thickness reduction of the intermediate element would nevertheless always ensure a sufficient gap between the two components.
  • the targeted reduction of the thickness of the intermediate element can be achieved for example by an intermediate element made of a material with lower hardness.
  • the filler 30 for example, subsequently to its outer cone surface 32 have a substantially axially extending in the direction of the ram 20 contact surface, which is opposite to a same bearing surface of the sealing ring 40, wherein the contact surface of the sealing ring 40 connects to the inner cone surface 41. Wrd the radial distance between these two contact surfaces chosen smaller than the radial distance between the
  • Connecting element remains a large gap, which may not be necessary and would not be desirable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)
  • Gasket Seals (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

L'invention concerne un disque de pression (10) à monter sur un poinçon (20) d'un dispositif presse, le disque de presse comportant au moins une fourrure (30) dotée d'une surface de pression qui permet d'exercer une force sur un matériau à presser, et la fourrure (30) présentant, de par sa surface externe conique (31), un diamètre externe conique et est entourée d'une bague d'étanchéité (40) appartement également au disque de pression, la bague d'étanchéité étant conçue avec un diamètre interne tel que sa surface interne conique (41) forme avec la surface externe conique (31) de la fourrure (30) au moins une fente (50). Entre la fourrure (30) et la bague d'étanchéité (40) s'étend au moins une fente radiale (51) qui s'élargit coniquement de l'intérieur vers l'extérieur, la fourrure (30) et la bague d'étanchéité (40) pouvant être montées sur le poinçon (20) par l'intermédiaire d'un élément de liaison(HO1) et la force de rappel du poinçon (20) pouvant être transmise à la bague d'étanchéité (40) par l'intermédiaire de l'élément de liaison (HO1). Selon l'invention, une rotation de la bague d'étanchéité (40) autour de l'axe de rotation du disque de pression (10) permet, en fonction du sens de rotation, d'établir ou bien de libérer une immobilisation de sécurité du disque de pression (10) contre le poinçon (20) destinée à empêcher tout mouvement axial; la bague d'étanchéité (40) et la fourrure (30) pouvant ainsi être montées sur le poinçon (20) ou démontées du poinçon par la face frontale du disque de pression (10). Le disque de pression (10) comporte l'élément de liaison (HO1) et l'élément de liaison présente un organe de liaison périphérique présentant une face frontale apte à absorber les forces de pression générées lors de l'opération de pressage.
EP11790964.8A 2010-12-01 2011-11-30 Système comprenant un disque de pression et un adaptateur pour le montage sur une presse d'extrusion Active EP2646181B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201131983T SI2646181T1 (sl) 2010-12-01 2011-11-30 Sistem iz stiskalne plošče in prilagoditvenega kosa za namestitev na stiskalnem pestišču stiskalne naprave

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010062258 2010-12-01
DE102010064400A DE102010064400B4 (de) 2010-12-01 2010-12-30 Pressscheibe und Pressvorrichtung mit einer solchen Pressscheibe
PCT/EP2011/071402 WO2012072688A1 (fr) 2010-12-01 2011-11-30 Disque de pression

Publications (2)

Publication Number Publication Date
EP2646181A1 true EP2646181A1 (fr) 2013-10-09
EP2646181B1 EP2646181B1 (fr) 2021-03-31

Family

ID=45872624

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11790616.4A Active EP2646180B1 (fr) 2010-12-01 2011-11-30 Disque de pression
EP11790964.8A Active EP2646181B1 (fr) 2010-12-01 2011-11-30 Système comprenant un disque de pression et un adaptateur pour le montage sur une presse d'extrusion

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11790616.4A Active EP2646180B1 (fr) 2010-12-01 2011-11-30 Disque de pression

Country Status (6)

Country Link
US (1) US9492855B2 (fr)
EP (2) EP2646180B1 (fr)
CA (1) CA2819279C (fr)
DE (2) DE102010064400B4 (fr)
SI (1) SI2646181T1 (fr)
WO (2) WO2012072686A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3108979B1 (fr) 2015-06-24 2017-08-09 Uddeholm Svenska AB Grain de poussée pour une presse d'extrusion
DE112017005076T5 (de) * 2016-10-06 2019-10-02 Exco Technologies Limited Werkzeugstahlzusammensetzung für einen bestandteil einer druckgussvorrichtung oder einer extrusionspresse
EP4093560A4 (fr) * 2018-11-15 2023-05-10 The Regents Of The University Of Michigan Extrusion de matériau métallique à l'aide d'un bloc factice ayant une surface incurvée
CN115283474B (zh) * 2022-10-08 2023-01-24 中北大学 一种高性能板坯均匀正挤压控制成形模具

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7314414U (de) * 1977-07-28 Schloemann-Siemag Ag, 4000 Duesseldorf Preßscheibe für den Preßstempel von Strangpressen, insbesondere von Aluminiumstrangpressen
JPS51122151U (fr) 1975-03-28 1976-10-04
GB2067944B (en) 1980-01-26 1983-03-23 Centry Aluminium Co Ltd Extrusion process
JPH0750007Y2 (ja) * 1990-11-06 1995-11-15 日本軽金属株式会社 ダミーブロックの押出ステムへの連結構造
DE4132810C2 (de) * 1991-10-02 1994-02-17 Erbsloeh Julius & August Preßscheibe mit Entlüftungseinrichtung
US5272900A (en) * 1992-09-18 1993-12-28 Exco Technologies, Limited Bayonet style connector for metal extrusion dummy block
US5918498A (en) * 1996-07-18 1999-07-06 Robbins; Paul H. Dummy block construction
DE10036463B4 (de) * 2000-07-25 2005-08-04 Heydasch, Horst Pressscheibe und Pressvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012072688A1 *

Also Published As

Publication number Publication date
US9492855B2 (en) 2016-11-15
SI2646181T1 (sl) 2021-08-31
EP2646180B1 (fr) 2017-11-15
EP2646181B1 (fr) 2021-03-31
CA2819279A1 (fr) 2012-06-07
US20130247640A1 (en) 2013-09-26
DE102010064400B4 (de) 2012-09-20
DE102010064400A1 (de) 2012-06-06
WO2012072686A1 (fr) 2012-06-07
CA2819279C (fr) 2018-11-13
EP2646180A1 (fr) 2013-10-09
DE102011007729B3 (de) 2012-04-12
WO2012072688A1 (fr) 2012-06-07

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