EP3486058A1 - Tête aspirante d'une presse à tuiles et procédé de montage d'une tête aspirante - Google Patents

Tête aspirante d'une presse à tuiles et procédé de montage d'une tête aspirante Download PDF

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Publication number
EP3486058A1
EP3486058A1 EP17400064.6A EP17400064A EP3486058A1 EP 3486058 A1 EP3486058 A1 EP 3486058A1 EP 17400064 A EP17400064 A EP 17400064A EP 3486058 A1 EP3486058 A1 EP 3486058A1
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EP
European Patent Office
Prior art keywords
suction head
clamping
unit
axial
tolerance
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
EP17400064.6A
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German (de)
English (en)
Other versions
EP3486058B1 (fr
Inventor
Andreas Treut
Sven Bayrl
Philipp Händle
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.)
Haendle Maschinen und Anlagenbau GmbH
Original Assignee
Haendle Maschinen und Anlagenbau GmbH
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Publication date
Application filed by Haendle Maschinen und Anlagenbau GmbH filed Critical Haendle Maschinen und Anlagenbau GmbH
Priority to EP17400064.6A priority Critical patent/EP3486058B1/fr
Publication of EP3486058A1 publication Critical patent/EP3486058A1/fr
Application granted granted Critical
Publication of EP3486058B1 publication Critical patent/EP3486058B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/04—Discharging the shaped articles
    • B28B13/06—Removing the shaped articles from moulds

Definitions

  • the invention relates to a roof tile press and a method for operating such a roof tile press.
  • a roof tile press is used to shape a tile and to compact the starting material of the tile.
  • roof tiles are made of clay and clay.
  • a pressed blank is produced from a plastic blank.
  • the blank is placed in a lower mold and then pressed by means of an upper mold, which is arranged on a ram, to form a molding.
  • the molding is removed at a removal point of the tile press.
  • This is typically done by means of a suction head, which combines the functions of recessing and suction:
  • the molding is separated by means of a knife frame of the suction head from the press waste and removed from the lower mold.
  • the pressed molding is deposited by pivoting and / or moving the suction head onto a molding carrier.
  • the molding carrier serves in the further process the transport of the brick moldings.
  • the suction heads for cutting, vacuuming and depositing are adapted in their geometry to the brick model to be produced and connected to the machine via a carrying unit.
  • the suction head is subjected to vacuum.
  • the deposit takes place via a pneumatic cylinder moving plate and additional compressed air ejection nozzles.
  • the suction cups have corresponding media connections.
  • the suction heads have a decisive influence on the brick quality. Their position determines the cut, i. the outer geometry of the molding and thus of the brick.
  • the lateral position (x-direction) describes the position of the suction cups parallel to the direction of the drum axis.
  • the y-direction describes the position on the drum surface, perpendicular to the drum axis and tangent to the drum surface.
  • the z position describes the position perpendicular to said x-y plane and also the position of the tray height above the frame track.
  • a visible offset of the cut to the brick surface in the x-y plane is considered a defect. There is therefore the need to align and position the suction cups in the x-y plane as accurately as possible.
  • the bias of the knife has an influence on the sectional view.
  • the connection of the suction cups is biased to the associated carrying units via spring assemblies.
  • the distance to the drum in the z direction must be set correctly and corrected if necessary.
  • the suction cups and their knives are subject to some wear due to the regular contact with the clay material. Wear of the knives affects the surface of the cut. The cut must be as smooth as possible. Therefore, and also because of the individual design for each brick model, there is a need to replace the suction cups at regular intervals or to remove for maintenance purposes.
  • the suction cups are separable connected with their carrying units. To the support units and the suction heads are each a receiving plate or an adapter plate attached. The adapter plate is always on top of the suction cups. The suction head thus hangs on the respective support unit or on its separate receiving plate, the cutting edge of the knife frame facing down.
  • the suction head must always be raised against gravity for attachment. Because of the usually confined space conditions, the suction head can not be gripped on its adapter plate. Rather, it is placed with the peripheral cutting edge of the knife frame on a soft surface and then brought into position. Although the knife frame is able to carry the weight of the suction head. Larger forces must be avoided, however, so as not to damage the knife frame. The application of additional assembly forces, for example, for pressing the suction head to the support unit is therefore eliminated.
  • connection of the adapter plate of the suction head with the receiving plate of the support unit via coupling means which comprise in the prior art screws, hydraulic swing clamping cylinder or other clamping elements.
  • the lines for the media such as vacuum and compressed air and possibly also other lines must be connected to the suction head.
  • the changing of the suction heads is associated with a high cost, since in the clamping operation, the position can be reproduced in the fewest cases with the necessary accuracy. After attaching the suction heads extensive adjustments are necessary to properly align the suction head relative to the lower mold of the tile. This time for adjustment means a significant production loss.
  • the invention has the object of developing a generic suction device and a tile press with such a suction device such that the attachment and / or removal of a suction head is facilitated by the support unit.
  • the invention is further based on the object to provide a simpler and faster method for mounting a suction head device.
  • Zero-point clamping systems comprise in the prior art a clamping bolt and a clamping unit for receiving and locking the clamping bolt. During the locking process, the clamping bolt is inserted axially into the unlocked clamping unit, wherein the clamping bolt is guided in all radial directions without play in the clamping unit. As a result, an exact positioning in a plane perpendicular to the axial direction of the clamping bolt or in an xy plane is given.
  • the invention is based on the further partial knowledge that despite the above disadvantages, the remaining advantages of a zero point clamping system can then be used in a roof tile press for Saugkopfmontage and dismantling, if certain modifications and flanking measures are introduced.
  • the coupling means have at least one zero-point clamping system and a device for determining the position of the suction head relative to the carrying unit.
  • the zero point clamping system comprises a clamping bolt and a clamping unit for receiving and locking the clamping bolt, wherein the clamping bolt and the clamping unit are matched to one another such that they have an axial gripping tolerance against each other during the locking operation.
  • the axial gripping tolerance is advantageously greater than / equal to one millimeter, is preferably in the range of one to three millimeters and is in particular about two millimeters.
  • the device for position determination is designed to determine the axial relative positioning of clamping bolt and clamping unit within the said axial grip tolerance during the locking operation.
  • the suction head and the carrying unit are brought closer to one another, while the clamping bolt is threaded into the clamping unit.
  • the approach continues until the position-determining device signals that the clamping bolt and the clamping unit are within the axial gripping tolerance relative to one another. In this reached position, the zero point clamping system is then locked.
  • the invention enables a considerably simpler assembly and disassembly of the suction head device.
  • the comparatively large gripping tolerance does not require a particularly accurate positioning.
  • a positioning with mechanical aids for example, via the machine control and without manual intervention of the operator, which also includes automated positioning.
  • the provision of one or more suction heads can be carried out, for example, on a suitable carrier which aligns the suction head (s) via dowel pins or similar positioning elements.
  • the carrier equipped in this way can be positioned over a carriage or over the conveyor of the molding carriers and then locked in the change position. For the approach of lower suction head and upper support unit latter can be lowered. Alternatively or additionally, the carrier equipped with the suction head can be lifted from below.
  • the coupling means have a total of two zero-point clamping systems for one support unit and one suction head each. As a result, an exact positioning and locking in all six spatial degrees of freedom (displacement in three spatial axes and rotation about three spatial axes) is achieved with little effort.
  • the zero point clamping system is designed and used in the operating method that the clamping unit during Locking process grips the clamping bolt within the axial gripping tolerance and then axially fixed while canceling the axial gripping tolerance. During locking, therefore, an axial distortion takes place, so that an exactly reproducible positional positioning is ensured even in the axial direction or in the z-direction.
  • the zero point clamping system can be manually operated, for example, via a lever mechanism or remotely, for example, electromechanically.
  • it has a pneumatic actuation, which in particular is locked without pressure and unlocked when compressed air is applied.
  • By applying simple pressure pulses can be achieved with little effort a reliable locking and unlocking, which can also be automatically coupled to the signal of the device for determining position Incidentally.
  • the device for determining the position may be an ultrasonic or tactile sensor or the like and preferably comprises a proximity sensor which is matched to the size of the axial grip tolerance, in particular in the form of an inductive proximity switch. This eliminates the expense of accurate position or distance measurement. Rather, a simple on / off signal is generated, which indicates whether a sufficient approximation has been reached or not.
  • the proximity sensor does not need exact adjustment, calibration or the like. Rather, a sufficient positioning in the accuracy range of the axial grip tolerance to indicate as desired that when triggering the switch, a relative position is reached, which is within the gripping tolerance and therefore allows a secure locking.
  • Fig. 1 shows a roof tile press 1 according to the invention carried out in the roof tile press 1 a molded article 22 is made of a plastic blank 2 made of clay or clay.
  • the blank 2 is conveyed on a conveyor belt 21 to the roof tile press 1.
  • the finished molding 22 is transported away with a conveyor 16 of the roof tile press 1 for further processing.
  • the molded article 22 is produced by pressing the blank 2 between an upper mold 4 and a lower mold 6 at a pressing point 7 of the tile press 1.
  • the shapes may vary depending on the brick type and regional preferences. For example, they may comprise an aluminum body with a plastic insert and a rubber membrane or blanket, or be made of a steel body.
  • both the upper mold 4 and the lower mold 6 comprise a Aluminum body and arranged therein a plaster insert.
  • the upper mold 4 is attached to the lower end of a press ram 3.
  • the ram 3 is reciprocally movable in the vertical direction. The ram 3 can be pressed by means of a cam 23 of the roof tile press 1 down.
  • the lower mold 6 is arranged on a movement device 5.
  • the movement device 5 is a drum.
  • the movement device is a pivotally mounted table and the lower mold is arranged on a surface of the table.
  • the drum in the embodiment is rotatably mounted about a longitudinal axis 90.
  • the longitudinal axis 90 is horizontal.
  • the peripheral surface of the drum forms an equilateral hexagon.
  • four sub-forms 6 are arranged, so that a total of twenty-four sub-forms 6 are present.
  • the roof tile press the same number, here four upper molds 4.
  • the roof tile press 1 performs several processing steps on different blanks 2 and moldings 22 at the same time.
  • the roof tile press 1 comprises various processing points for processing the blank 2 and the molding 22.
  • the processing points comprise a filling point 12 for filling the lower mold 6 with a blank 2 to be pressed, the already mentioned pressing point 7 for pressing the blank 2 between the upper mold 4 and the Subform 6, a removal point 8 with a suction head device 60 for removing the pressed molding 22 from the lower mold 6 and for depositing it on a molding carrier 20, and a discharge point 11 for removing a possibly unintentionally remained in the lower mold 6 content 19.
  • the moving means 5 moves the lower mold 6 in a direction of movement 100 cyclically from one processing point to the next.
  • the direction of movement 100 is circular in a clockwise direction about the longitudinal axis 90 of the drum.
  • the direction of movement 100 runs in the direction from the removal point 8 via the filling point 12 to the pressing point 7 and from the pressing point 7 back to the removal point 8.
  • the drum rotates clockwise in its circumferential direction.
  • the drum is driven by a rotary or locking gear.
  • the rotary or locking gear is not shown Maltese gear.
  • the drum and thus also arranged on the side surface lower mold 6 is further rotated about the rotation angle about the longitudinal axis 90.
  • the angle of rotation is 60 °.
  • Fig. 3 shows in a perspective front view of the roof tile press after the Fig. 1 and 2 in the region of the removal point 8.
  • the tile press 1 the same number, here four suction device 60 on.
  • the suction head device 60 By means of the suction head device 60, the pressed moldings 22 in the step after Fig. 2 taken from their respective lower mold 6, thereby trimmed in its contour and according to Fig. 3 placed on molding carriers 20.
  • the mold carriers 20 are in turn on a conveyor 16, by means of which the mold carrier 20 and the moldings deposited thereon 22 are transported away and supplied for further processing.
  • FIG. 4 shows in an enlarged detail view of the arrangement according to Fig. 3
  • a single suction head device 60 comprises in each case a carrying unit 61, a suction head 24 and coupling means 62 described in more detail below for the interchangeable connection of the suction head 24 to the carrying unit 61.
  • the carrying unit 61 comprises a base body 69 and a Receiving plate 70, wherein the receiving plate 70 against a spring force is supported vertically yielding on the base body 69.
  • the suction head 24 comprises an adapter plate 71 corresponding to the receiving plate 70 and a circumferential knife frame 72 extending downwardly therefrom for separating excess material of the molded article 22. For this purpose, in operation the suction head 24 is attached to the lower mold 6 (FIG.
  • Fig. 1, 2 moved up that the knife frame 72 penetrates into the material of the molding 22, this cuts to a certain outline and thereby determines the outer contour of the later tile.
  • the above-described elastic compliance of the receiving plate 70 relative to the base body 69 in this case allows a certain compensating movement.
  • connection of the suction head 24 with the support unit is designed to be detachable, in order to allow replacement of the suction head 24 as needed.
  • coupling means 62 ( Fig. 4 ), which after the FIGS. 5 and 6 at least one zero-point clamping system 63, here two total zero point clamping systems 63 for each support unit 61 and each have a suction head 24 and a device for determining the position of the suction head 24 relative to the support unit 61 61.
  • Each of the zero point clamping systems 63 each comprise a clamping bolt 64 and a clamping unit 65 for receiving and locking the clamping bolt 64.
  • the clamping units 65 are fastened in the embodiment shown on the support unit 61, namely on the receiving plate 70, while the associated clamping bolt 64 on the suction head 24, here are attached to the adapter plate 71. But it can also be considered a reverse attachment. In any case, the clamping units 65 are adapted to receive the associated clamping bolt 64 and lock, with a locking of the suction head 24 is associated with the support unit 61.
  • the device for position determination 66 of the suction head 24 relative to the support unit 61 is formed in the illustrated embodiment as a proximity sensor, more precisely as an inductive proximity switch 68.
  • the inductive proximity switch 68 is inserted from above into the receiving plate 70 of the support unit 61 and fixed there such that it is aligned with its detection range down to the suction head 24 out.
  • a reverse mounting on the suction head 24 is possible.
  • FIGS. 5 and 6 An inventive method for mounting the suction device 60, so for releasably securing and locking the suction head 24 to the support unit 61 is now apparent from the synopsis of FIGS. 5 and 6 As follows: First, the suction head 24 and the carrying unit 61 are brought closer to each other as shown in FIG Fig. 5 is shown. For this purpose, in the embodiment of the suction head 24 with the lower edge of its blade frame 72 on a support, not shown, and is there positioned relative to the axial direction of the clamping bolt just below the receiving openings of the associated clamping units 65. The mutual approach is now continued in said axial direction by the support unit is lowered via the machine control, not shown.
  • clamping bolts 64 thread into the receiving openings of the associated clamping units 65 according to Fig. 6 on.
  • a combined movement of both modules within the scope of the invention is conceivable.
  • the longitudinal axis of the clamping bolt 64 defines a z-direction which, in the assembled state, is radial to the longitudinal axis 90 of the movement device 5 or the drum (FIG. Fig. 2 ) lies.
  • Perpendicular to this is a parting plane between the receiving plate 70 and the adapter plate 71 with an x-direction, which in the mounted state parallel to said longitudinal axis 90 (FIGS. Fig. 2 ), and with a y-axis perpendicular to it, ie in the mounted state perpendicular to the longitudinal axis 90 and thereby tangential to the surface of said drum according to the direction of movement 100 ( Fig. 2 ) lies.
  • the clamping bolt 64 and the clamping units 65 are coordinated so that the clamping bolts 64 automatically thread into the clamping units and then performed in the engaged state quasi clearance in the x-direction and in the y-direction, resulting in a guide and exact relative positioning of Suction head 24 and support unit 61 in just these same directions.
  • no relative rotation about the z-axis can take place.
  • the clamping bolt 64 and the clamping unit 65 are also coordinated so that they have an axial gripping tolerance a against each other during the locking process.
  • Fig. 6 illustrated that the approach of suction head 24 and support unit 61 in the z direction has been driven so far that the desired target position is almost reached in the context of a machine-controlled coarse positioning, but that between the suction head 24 and the support unit 61 still a gap has remained.
  • the clamping bolt 64 is not inserted to the end in the clamping unit 65, therefore, in the context of said coarse positioning no stop between the suction head 24 and support unit 61 is present.
  • Said gap corresponds with its gap dimension in the z-direction of the axial, measured in the z-direction grip tolerance a, within which remains a residual mobility of the suction head 24 relative to the support unit 61 in the z-direction, on the other hand, on the other hand, but also the zero point clamping system 63rd can be reliably locked.
  • the axial gripping tolerance is preferably at least one millimeter and is in particular in the range of one to three millimeters. In the preferred embodiment shown, it is about two millimeters.
  • Whether an axial relative positioning of clamping bolt 64 and clamping unit 65 has now been set within said axial grip tolerance a is determined by means of the position-determining device 66, that is to say by means of the inductive proximity switch 68. This is set so that it is close enough, however without going on strike, gives a signal. This signal indicates that an axial relative positioning within the grip tolerance a has been achieved. This may be a light signal and / or an acoustic signal, as a result of which the machine personnel now perform a locking by means of the zero-point clamping systems 63. Alternatively, of course, a fully automatic locking is conceivable.
  • the now made locking causes a reliable, if necessary, but releasable attachment of the suction head 24 to the support unit 61, wherein now the remaining spatial degrees of freedom of a relative movement are set at least with sufficient accuracy.
  • the zero point clamping system 63 is also designed so that the clamping unit 65 engages the clamping bolt 64 within the axial gripping tolerance a during the locking process and then fixed axially while canceling the axial gripping tolerance a.
  • there is an axial tension in which the gap between suction head 24 and support unit 61 disappears, therefore, the adapter plate 71 of the suction head 24 comes to rest against the receiving plate 70 of the support unit 61.
  • a backlash-free fixation is brought about in the z-direction, which equally applies to now excluded tilting movements about the x-axis and about the y-axis.
  • a carrier can be provided for disassembly and moved close to the suction head 24. Again, a proximity sensor can be used. After releasing the zero-point clamping systems 63, the suction head gently lowers on the support and can then be removed without overload.
  • the zero point clamping systems 63 used have a pneumatic actuation 67, which is indicated only schematically here, whereby a locking or an unlocking is brought about by means of compressed air.
  • the zero-point clamping systems 63 are designed as pressureless exciting. In other words, they are in the locked state without the concern of compressed air. When applying a compressed air pulse, this lock is released. Based on the above-described assembly and Locking process, this means that initially a rough positioning is carried out into the axial gripping tolerance a, while the zero point clamping system 63 is unlocked by applying pressure on the part of the pneumatic actuator 67. As soon as the axial gripping tolerance a is reached and this is detected by means of the inductive proximity switch 68, the pressure is removed, so that a locking occurs as a result.

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)
EP17400064.6A 2017-11-16 2017-11-16 Tête aspirante d'une presse à tuiles et procédé de montage d'une tête aspirante Active EP3486058B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17400064.6A EP3486058B1 (fr) 2017-11-16 2017-11-16 Tête aspirante d'une presse à tuiles et procédé de montage d'une tête aspirante

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17400064.6A EP3486058B1 (fr) 2017-11-16 2017-11-16 Tête aspirante d'une presse à tuiles et procédé de montage d'une tête aspirante

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EP3486058A1 true EP3486058A1 (fr) 2019-05-22
EP3486058B1 EP3486058B1 (fr) 2020-04-22

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EP17400064.6A Active EP3486058B1 (fr) 2017-11-16 2017-11-16 Tête aspirante d'une presse à tuiles et procédé de montage d'une tête aspirante

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9407086U1 (de) * 1994-04-28 1994-07-07 Welz, Reiner, 86316 Friedberg Einstellbare Saugkopfbefestigung für Dachziegelpressen
DE4427251A1 (de) * 1994-07-30 1996-02-08 Haendle Gmbh Masch Anlagenbau Presse, insbesondere Ziegelpresse
WO2014023286A1 (fr) * 2012-08-09 2014-02-13 Springer Gmbh Systèmes de changement rapide pour un dispositif manipulateur spécialement adapté aux pièces, dispositif de manutention spécialement adapté aux pièces comportant le dispositif, et ossature de dépose pour ces pièces

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9407086U1 (de) * 1994-04-28 1994-07-07 Welz, Reiner, 86316 Friedberg Einstellbare Saugkopfbefestigung für Dachziegelpressen
DE4427251A1 (de) * 1994-07-30 1996-02-08 Haendle Gmbh Masch Anlagenbau Presse, insbesondere Ziegelpresse
WO2014023286A1 (fr) * 2012-08-09 2014-02-13 Springer Gmbh Systèmes de changement rapide pour un dispositif manipulateur spécialement adapté aux pièces, dispositif de manutention spécialement adapté aux pièces comportant le dispositif, et ossature de dépose pour ces pièces

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EP3486058B1 (fr) 2020-04-22

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