EP3486054B1 - Presse à tuiles et procédé de fonctionnement d'une presse à tuiles - Google Patents

Presse à tuiles et procédé de fonctionnement d'une presse à tuiles Download PDF

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Publication number
EP3486054B1
EP3486054B1 EP17400065.3A EP17400065A EP3486054B1 EP 3486054 B1 EP3486054 B1 EP 3486054B1 EP 17400065 A EP17400065 A EP 17400065A EP 3486054 B1 EP3486054 B1 EP 3486054B1
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EP
European Patent Office
Prior art keywords
lower mould
blank
station
content
tile press
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.)
Active
Application number
EP17400065.3A
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German (de)
English (en)
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EP3486054A1 (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
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Haendle Maschinen und Anlagenbau GmbH
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Application filed by Haendle Maschinen und Anlagenbau GmbH filed Critical Haendle Maschinen und Anlagenbau GmbH
Priority to EP17400065.3A priority Critical patent/EP3486054B1/fr
Publication of EP3486054A1 publication Critical patent/EP3486054A1/fr
Application granted granted Critical
Publication of EP3486054B1 publication Critical patent/EP3486054B1/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
    • B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping
    • B28B5/10—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping in moulds carried on the circumference of a rotating drum
    • B28B5/12—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping in moulds carried on the circumference of a rotating drum intermittently rotated
    • 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
    • B30B11/12—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 co-operating with moulds on the circumference of a rotating drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
    • B30B15/285—Arrangements for preventing distortion of, or damage to, presses or parts thereof preventing a full press stroke if there is an obstruction in the working area

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 roof tile and to compress the base material of the roof tile.
  • roof tiles are made from clay and loam.
  • a pressed blank is made from a plastic blank in a roof tile press.
  • the blank is placed in a lower mold and then pressed to form a blank by means of an upper mold which is arranged on a press ram.
  • the molding is then removed from the tile press at a removal point. This is typically done using a suction plate.
  • the suction plate which is supported on a guide and damped by springs, is pressed against the molding, and the molding is sucked in by the suction plate. During this process, the springs are compressed by a defined distance.
  • the molding is then placed on a conveyor by means of the suction plate, which conveys the molding to the next processing step.
  • the now free lower mold is filled again with a plastic blank, and the process steps described are applied to this new blank.
  • a large molding is detected when it is removed at the removal point of the roof tile press.
  • the spring of the mounting of the suction plate is compressed by a larger spring travel because of the larger volume of the large molding than if there is only a simple molding in the lower mold.
  • a limit switch is provided which triggers when the spring is compressed by a certain minimum distance.
  • the switch triggers when there is a so-called double pressure.
  • a double pressing occurs when the molding remains completely in the lower mold during an attempted removal and is pressed together with a freshly inserted blank to form a large molding.
  • the triggering of the limit switch indicates that a large molding is in the lower mold.
  • the large blank can then be sorted out, for example if it is on the conveyor.
  • the publication FR 670 692 A discloses a roof tile press for producing a pressed blank from a plastic blank according to the preamble of claim 1.
  • a prior art roof tile press has several disadvantages. On the one hand, pressing of content remaining in the lower mold together with a newly inserted blank between the upper and lower molds is not prevented. Such a pressing, in which there is more material in the lower mold than originally intended, often results in damage to the upper and / or lower mold or the surface thereof and thus to a loss in quality of the subsequently pressed moldings. As a result, the operation of the roof tile press must be interrupted in order to repair or replace the upper and / or lower molds. This results in production downtimes. In addition, the material of the blank pressed into the large blank is lost.
  • the large molding which is then formed is often not or not completely removed from the lower mold.
  • the limit switch at the removal point has already triggered and the operator of the roof tile press is informed that the large molding may still be wholly or partly in the lower mold. If this suspicion is confirmed, the operation of the roof tile press should be interrupted and the affected lower mold cleaned or even replaced in order to prevent further incorrect pressing and / or damage.
  • the invention has for its object to develop a generic roof tile press in such a way that its error sensitivity is reduced.
  • Another object of the invention is to provide a method for operating a roof tile press, which enables better consideration of faulty pellet removals.
  • the error sensor for detecting the content of the lower mold based on a cycle of the movement device is arranged in the direction of movement after the removal point and before the pressing point.
  • the moldings or partial moldings removed at the removal point are deposited on a conveyor by the roof tile press.
  • the roof tile press according to the invention also identifies, in the manner described above, those molded parts whose top side visible on the conveyor initially appears to be free of defects. In any case, the identification creates the possibility of sorting out such partial moldings.
  • the processing points advantageously comprise a discharge point for removing the content remaining in the lower mold after removal of a pressed molding from the lower mold, the discharge point being arranged after the removal point and in front of the pressing point in relation to a cycle of the movement device.
  • the error sensor is arranged in relation to a cycle of the movement device in the direction of movement after the discharge point.
  • the processing points advantageously comprise a filling point for filling the lower mold with a blank to be pressed, the filling point being arranged in relation to a cycle of the movement device in the direction of movement after the removal point and before the pressing point.
  • the error sensor is arranged in relation to a cycle of the movement device in the direction of movement after the removal point and before the filling point. In this way, incorrect pressing can be avoided without having to completely interrupt the operation of the roof tile press. If the fault sensor is in the lower mold before it reaches the filling point If the remaining content is detected, measures can be taken to prevent the lower mold from being refilled with a fresh blank. There is never more than one blank in the lower mold, and the volume of the contents of the lower mold is not greater than originally intended during a pressing.
  • Another advantage is beyond the actual pressing process for downstream production. By avoiding the production of a large molding, the material for this can be saved. Elaborate sorting out of the large preform before the application of further process steps such as drying or firing is also unnecessary.
  • the error sensor is advantageously designed to detect the volume of the content of the lower mold. This makes it possible to detect whether a molding has been removed completely, partially or not at the removal point. Different measures can then be taken based on this information. For example, in the case of a small volume of the content remaining in the lower mold after the removal point, it may be harmless if the lower mold at the filling point is filled again with a blank in addition to the remaining content, since there is no danger of pressing the blank together with the remaining content for damage to the upper or lower mold. In addition, the resulting large molding can also meet the quality requirements for further processing with only a small volume of the remaining content.
  • a large molding should only be pressed to make it easier to remove the in the To enable the subform remaining content at the removal point and to be able to subsequently sort out the large molding together with the content remaining in the subform that has been absorbed in the large molding.
  • the large molding can also be pressed so that the content remaining in the lower mold, which has been absorbed in the large molding, is easier to loosen at the discharge point.
  • a large molding with the aim of dropping at the dropping point is called a scrap molding. Only when a predetermined threshold value for the volume of the content remaining in the lower mold is exceeded will suitable measures prevent filling of the lower mold at the filling point.
  • the roof tile press advantageously comprises a control device, a first signal being generated in the control device when the error sensor detects content in the lower mold.
  • This first signal can then be used to take suitable measures.
  • the first signal can be sent from the roof tile press to the control of a conveyor belt that conveys blanks to the filling point of the roof tile press.
  • the control of the conveyor belt could then cause the conveyor belt to stop on the basis of the first signal, so that no new blank is placed at the filling point in the lower mold in which a content is left behind.
  • the first signal can be used to indicate that the partial molding previously removed from the subform in question is faulty.
  • the first signal can also be forwarded to a device which sorts out the defective part from the further processing.
  • the generation of the first signal advantageously depends on the volume of the detected content.
  • the control unit can use the first signal depending on the volume of the detected content.
  • the first signal can be generated, for example, when a certain volume threshold value is exceeded and, as already described, can then be used to stop the conveyor belt for the blanks.
  • the error sensor is advantageously provided for detecting a change in the shape of the lower mold.
  • the error sensor can preferably distinguish whether it is a change in the shape of the subform itself or a shape that results from the subform and its content together.
  • a threshold value for a maximum permissible deviation of the actual shape of the subform from an ideal shape of the subform is exceeded, a second signal is advantageously generated in the control device.
  • the second signal can be used, for example, to indicate that the lower mold has to be replaced.
  • a specified quality standard can be maintained for the moldings produced by the roof tile press. It also prevents the lower mold from being replaced too early and could actually have been used even further. In this way, an unnecessary, premature interruption of the operation of the roof tile press can be avoided.
  • the second signal advantageously causes the roof tile press to stop operating.
  • a specified quality standard is maintained for the moldings produced by the roof tile press. Defective moldings are prevented from being produced.
  • the lower mold can be examined and repaired or exchanged. In this way, as few defective moldings as possible are produced.
  • the moving device of the roof tile press stops.
  • the error sensor is advantageously an optical sensor. This enables a contactless examination of the lower mold and its content.
  • the error sensor is preferably a camera, and in particular a 3d camera. As a result, the volume of the content of the subform can be determined in a simple manner in conjunction with suitable image evaluation software.
  • the volume of the content remaining in the lower mold is determined.
  • a first threshold value for the volume of the content is exceeded, the subform is expediently not filled with a fresh blank before the lower mold reaches the pressing point again by movement. This prevents the content remaining in the lower mold from being pressed together with a newly inserted blank at the pressing point and thereby damaging the lower and / or upper shape of the roof tile press.
  • the roof tile press stops operating when a lower mold with a remaining content has not been filled with a fresh blank, and when it is detected after another attempt at removing the remaining content at the removal point that content is still in the The lower mold remains, the volume of which exceeds the first threshold. In this way, a permanent loss of production is avoided if a content stuck in the lower mold does not come loose at the removal point or at the drop point and there is a risk of repeating the cycle in constant repetition. The operator can clean or even replace the lower mold in question after a stop.
  • the lower mold is filled with a fresh blank before the lower mold again reaches the pressing point by movement.
  • the freshly inserted blank is advantageously pressed together with the content remaining in the lower mold at the pressing point to form a scrap.
  • the reject molding is not removed at the removal point, but is removed from the lower mold at a discharge point.
  • Fig. 1 shows a roof tile press 1 designed in accordance with the invention.
  • a molding 22 is produced from a plastic blank 2.
  • the blank 2 is conveyed on a conveyor belt 21 to the roof tile press 1.
  • the finished molding 22 is removed by a conveyor 16 from the roof tile press 1 for further processing.
  • the molding 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 roof tile press 1.
  • the shapes can vary depending on the type of brick and regional preferences. For example, they can comprise an aluminum body with a plastic insert and a rubber membrane or a rubber blanket, or they can be made from a steel body.
  • Both the upper mold 4 and the lower mold 6 comprise an aluminum body and a gypsum insert arranged therein.
  • the upper form 4 is at the bottom End of a press ram 3 attached.
  • the press ram 3 is mounted so that it can move back and forth in the vertical direction.
  • the press ram 3 can be pressed down by means of a cam plate 23 of the roof tile press 1.
  • the lower mold 6 is arranged on a movement device 5.
  • the movement device 5 is a drum.
  • the movement device is a swivel-mounted table and the lower mold is arranged on a surface of the table.
  • the drum in the exemplary embodiment is rotatably mounted about a longitudinal axis 90.
  • the longitudinal axis 90 runs horizontally.
  • the peripheral surface of the drum forms an equilateral hexagon.
  • Four sub-molds 6 are arranged on each side of the hexagonal peripheral surface, so there are a total of twenty-four sub-molds 6.
  • the roof tile press Corresponding to the number of lower molds 6 located on a drum surface, the roof tile press has the same number, in this case four upper molds 4.
  • the roof tile press 1 carries out several processing steps on different blanks 2 and moldings 22 simultaneously.
  • the roof tile press 1 comprises various processing points for processing the blank 2 and the blank 22.
  • the processing points include a filling point 12 for filling the lower mold 6 with a blank 2 to be pressed, the press point 7 already mentioned for pressing the blank 2 between the upper mold 4 and the blank Lower mold 6, a removal point 8 for removing the pressed molding 22 from the lower mold 6, and a discharge point 11 for removing any content 19 which may remain in the lower mold 6 unintentionally.
  • the moving device 5 moves the lower mold 6 in a direction of movement 100 cyclically from one processing point to the other next one.
  • the direction of movement 100 is circular in a clockwise direction around the longitudinal axis 90 of the drum.
  • the direction of movement 100 runs in the direction from the tapping point 8 via the filling point 12 to the pressing point 7 and from the pressing point 7 back to the tapping point 8.
  • the drum rotates clockwise into it Circumferential direction.
  • the drum is driven by a rotary or detent gear.
  • the rotary or detent gear is a Geneva gear, not shown.
  • the drum and thus also the lower mold 6 arranged on the side surface is then rotated further about the longitudinal axis 90 by the angle of rotation.
  • the angle of rotation is 60 °.
  • the lower mold 6 and the movement device 5 return to their initial state. In the exemplary embodiment, this happens after six rotations.
  • the movement device 5 and the lower mold 6 run through a cycle.
  • the tapping point 8 is defined as the starting point 9 of this cycle.
  • the lower mold 6 or the movement device 5 passes through the discharge point 11, the filling point 12 and the pressing point 7 one after the other in the direction of movement 100.
  • the lower mold 6 or the movement device 5 then returns to the starting point 9 back to their starting position.
  • the lower mold 6 has made a full rotation of 360 ° about the longitudinal axis 90 of the drum.
  • the lower mold 6 at the starting point 9 assumes an angular position with respect to the rotation about the longitudinal axis 90 of 0 °.
  • the starting point 9 defines the zero point of an angle scale.
  • the discharge point 11 is offset by 120 ° to the starting point 9 with respect to a rotation about the longitudinal axis 90.
  • the filling point 12 is offset in a clockwise direction by 270 ° to the starting point 9 with respect to a rotation about the longitudinal axis 90.
  • the press point 7 is offset by 300 ° to the starting point 9 with respect to a rotation about the longitudinal axis 90 in the clockwise direction.
  • the cycle of the movement device 5 begins at the starting point 9 at 0 ° and ends after one cycle of the cycle after the movement device 5 has been rotated about the longitudinal axis 90 by 360 °.
  • the cycle of the movement device 5 begins by definition with a removal attempt at the removal point 8 and ends immediately before a renewed removal attempt at the removal point 8 after the movement device 5 has passed all processing points once.
  • the discharge point 11 is arranged in the direction of movement 100 after the removal point 8 and before the filling point 12.
  • the discharge point 11 is arranged in the direction of movement 100 in front of the press point 7.
  • the filling point 12 is arranged in the direction of movement 100 after the removal point 8 and before the pressing point 7.
  • the filling point 12 is arranged in the movement direction 100 after the discharge point 11.
  • Fig. 3 shows a rear view of the roof tile press 1 perpendicular to the longitudinal axis 90 of the movement device 5 with a view of the filling point 12.
  • the press ram 3 can be moved back and forth in a pressing direction 80.
  • the pressing direction 80 is oriented perpendicular to the longitudinal axis 90 of the movement device 5.
  • the pressing direction 80 runs vertically in the exemplary embodiment.
  • Fig. 4 shows a front view of the roof tile press 1 perpendicular to the longitudinal axis 90 of the movement device 5 with a view of the removal point 8.
  • the press point 7 and the press ram 3 are arranged between the filling point 12 and the removal point 8.
  • the conveyor belt 21, on which blanks 2 are conveyed to the filling point 12 of the roof tile press 1, is not shown.
  • the filling point 12 is covered by the conveyor belt 21.
  • the subforms 6 are then on the filling point 12 not visible.
  • the roof tile press 1 comprises a series of suction heads 24.
  • the pressed molding 22 is removed from the lower mold 6 by means of the suction head 24 and placed on a molding carrier 20.
  • the blank carrier 20 is arranged on the conveyor 16, as in FIG Fig. 1 shown. By means of the conveyor 16, the molding carrier 20 is transported away together with the molding 22 to the next process step.
  • Fig. 5 shows an enlarged section of the sectional view Fig. 2 .
  • the moving device 5 and the lower mold 6 arranged on it cycle through the processing points of the roof tile press 1 for the blank 2 and the blank 22.
  • the lower mold 6 is located at the removal point 8.
  • the suction head 24 comprises a suction plate 14, a knife frame 18 and a guide 25.
  • the knife frame 18 and the suction plate 14 are resiliently mounted with respect to the guide 25.
  • the force of a damping element 26 counteracts the movement of the knife frame 18 and the suction plate 14 against the guide 25.
  • the damping element 26 is a compression spring which acts between the suction plate 14 and the guide 25.
  • the knife frame 18 is arranged on the suction plate 14 on the side of the suction plate 14 facing away from the guide 25. In the exemplary embodiment, the knife frame 18 is firmly connected to the suction plate 14.
  • the molding 22 is separated from the press waste by means of the knife frame 18 of the suction head 24.
  • the knife frame 18 is pressed against the contents of the lower mold 6 via the guide 25 and the suction plate 14, and the molding 22 is cut out.
  • the punched-out molding 22 is then sucked in by the suction plate 14 of the suction head 24.
  • the suction head 24 is removed from the lower mold 6 and towards Conveyor 16 pivoted.
  • the press waste remains in the lower mold 6.
  • the molded carrier 20 is arranged on the conveyor 16.
  • the suction head 24 is placed over the molding carrier 20, and the molding 22 is placed on the molding carrier 20 by interrupting the suction force of the suction plate 14.
  • the content 19 can only consist of the press waste. However, the content 19 can also include parts of the molded article 22 which have remained in the lower mold 6 during an attempt at removal at the removal point 8. None or only a partial molding 42 is then deposited on the molding carrier 20. The volume of the molded part 42 is smaller than the volume of the molded part 22.
  • the content 19 of the lower mold 6 can also consist only of parts of the molded part 22 which have remained in the lower mold 6 during a removal attempt at the removal point 8. This can be the case, in particular, if only the press waste, but not the parts of the molded article 22, which are left in the lower mold 6 during the attempted removal, come off the lower mold 6 on the way to the filling point 12.
  • the movement device 5 with the lower mold 6 is moved to the discharge point 11.
  • the drum is rotated twice by 60 ° in the direction of movement 100 about the longitudinal axis 90.
  • the discharge point 11 is located at the lowest point of the movement device 5.
  • the lower mold 6, when it is located at the discharge point 11, is turned upside down.
  • the content 19 remaining in the lower mold 6 after the removal point 8 can detach from the lower mold 6 on the way of the lower mold 6 to the removal point 11 or in the removal point 11 due to the gravity acting on the content 19. As a result, the content 19 can be removed from the lower mold 6.
  • a waste conveyor belt 17 is arranged under the removal point 11.
  • a funnel 27 is located between the movement device 5 and the waste conveyor belt 17 arranged.
  • the content 19, which is released from the lower mold 6, is passed via the funnel 27 onto the waste belt 17 and transported away by means of the waste conveyor belt 17.
  • the content 19 can also detach from the lower mold 6 on the way of the lower mold 6 from the discharge point 11 to the filling point 12. The same applies to the press waste. Then, too, the content 19 or the press waste is fed via the funnel 27 onto the waste conveyor belt 17.
  • the movement device 5 or the lower mold 6 is moved further to the filling point 12.
  • the drum is first rotated twice by 60 ° about the longitudinal axis 90 in the direction of movement 100.
  • the movement device 5 passes the filling point 12 after half the third rotation of the drum.
  • a blank 2 to be pressed is generally inserted into the lower mold 6 at the filling point 12 .
  • the blank 2 is transported on a conveyor belt 21 to the filling point 12. At the filling point 12, the blank 2 slides from the conveyor belt 21 into the lower mold 6.
  • the roof tile press 1 comprises a fault sensor 10 for detecting the content 19 of the lower mold 6.
  • the fault sensor 10 is arranged in relation to a cycle of the movement device 5 in the movement direction 100 after the removal point 8 and before the pressing point 7.
  • the error sensor is arranged in relation to a cycle of the movement device 5 in the direction of movement 100 after the discharge point 11 and before the filling point 12.
  • the error sensor 10 is offset from the starting point 9 with respect to a rotation about the longitudinal axis 90 clockwise by 120 ° to 270 °, in particular by 210 ° to 270 °, advantageously by 225 ° to 255 °, preferably by 235 ° to 245 °.
  • the error sensor 10 is offset clockwise to the starting point 9 with respect to a rotation about the longitudinal axis 90.
  • the error sensor 10 is arranged such that it can detect the content 19 of the subform 6 on the way of the subform 6 from the discharge point 11 to the filling point 12.
  • the fault sensor 10 is arranged below the conveyor belt 21.
  • the error sensor 10 is designed to detect the volume of the content 9 of the lower mold 6.
  • the error sensor 10 is an optical sensor.
  • the error sensor 10 is a 3d camera. However, it can also be provided that the error sensor 10 is a laser sensor.
  • the roof tile press 1 comprises a control device 13.
  • the error sensor 10 is connected to the control device 13 via a line 15. If the error sensor 10 detects a content 19 in the subform 6, the error sensor 10 sends a message signal to the control device 13 via the line 15.
  • a first signal is generated in the control device 13 on the basis of the message signal. In the exemplary embodiment, the generation of the first signal depends on the volume of the detected content 19.
  • a first notification signal is sent to the control device 13 and the first signal is generated.
  • the drive motor 28 of the conveyor belt 21 is controlled by the control device 13 via a line 29 and stopped when the first signal is present.
  • the first signal thus causes the conveyor belt 21 to stop temporarily, so that the conveyor belt 21 in particular does not fill the lower mold 6 with a blank 2 which still contains the detected unwanted content 19.
  • an attempt can be made again to remove the contents 19 of the lower mold 6 from the lower mold 6 at the removal point 8 or at the discharge point 11. In the exemplary embodiment, this is done by throwing off the content 19 over the waste belt 17 due to the gravity acting on the content 19.
  • the error sensor 10 is also in operation during this further cycle of the movement device 5. If the error sensor 10 detects the content 19 again with the volume unchanged or only slightly changed, a further message signal is issued sent from error sensor 10 to control device 13 via line 29. If the control device 13 receives a message signal from the error sensor 10 in two or more successive cycles of the movement device 5, the control device 13 generates a stop signal. The stop signal causes the roof tile press 1 to stop operating. This stop is particularly associated with a stop of the movement of the movement device 5. The bottom mold 6 can be safely freed from the contents 19 during the stop. The stop signal from the control device 13 can also be used to stop the conveyor belt 21, or the drive motor 28 of the conveyor belt 21, and the conveyor 16, or its drive motor.
  • a second notification signal is sent to the control device 13 and a second signal from the control device 13 generated.
  • the lower mold 6 is filled with a blank 2 at the filling point 12 in addition to the content 19.
  • the content 19 is pressed together with the blank 2 at the pressing point 7 into a large blank.
  • the second signal from the control device 13 is sent to the suction head 24.
  • the second signal has the effect that the suction head 24 does not remove the large molding at the removal point 8 when the cycle of the movement device 5 is run through again.
  • the control device 13 is connected to a sorting device 30 via a line 31. If the error sensor 10 detects a volume of the detected content 19 that exceeds the predetermined first threshold value and falls below the value of the volume of a molded article 22, the first signal generated by the control device 13 is sent via the line 31 from the control device 13 to the sorting device 30 . Because a partial volume of a molding 22 was detected in the lower mold 6, it is assumed that the partial molding 42 was removed at the removal point 8. As a rule, the press waste is dropped from the lower mold 6 at the discharge point 11. The partial molding 42 has been placed on the molding carrier 20 by the suction head 24. On the basis of the first signal, which is sent to the sorting machine 30, the sorting device 30 removes the partial molding 42 from the molding carrier 20. The partial molding 42 is not further processed.
  • the error sensor 10 is also designed to detect a change in the shape of the lower mold 6. If a limit value for a maximum permissible deviation of the actual shape of the subform 6 from an ideal shape of the subform 6 is exceeded, a deviation signal is sent to the control device 13 and a warning signal is generated in the control device 13. The warning signal causes the roof tile press 1 to stop operating, so that the movement device 5 stops and the affected lower mold 6 can be repaired or exchanged.
  • an additional second error sensor is arranged in relation to a cycle of the movement device in the direction of movement after the removal point and before the discharge point.
  • the second error sensor can be used to detect whether a faulty part molding has been produced. This can be concluded if the second error sensor detects content in the lower mold after the removal point.
  • the partial molding can be identified in this way and then sorted out. Partial moldings can also be identified here, the upper side of which is visible on the conveyor initially appears to be free of defects.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Claims (14)

  1. Presse à tuiles pour la fabrication d'une pièce moulée pressée (22) à partir d'une ébauche plastique (2), comprenant un poinçon de pressage (3) avec un moule supérieur (4), et un dispositif de déplacement (5) sur lequel est disposé un moule inférieur (6) pour recevoir l'ébauche à presser (2), dans laquelle la presse à tuiles (1) comprend des postes de traitement pour le traitement de l'ébauche (2) et de la pièce moulée (22), dans laquelle les postes de traitement comprennent au moins un poste de pressage (7) pour presser l'ébauche (2) entre le moule supérieur (4) et le moule inférieur (6), et un poste d'extraction (8) pour la pièce moulée pressée (22) hors du moule inférieur (6), dans laquelle le dispositif de déplacement (5) déplace le moule inférieur (6) dans une direction de déplacement (100) cycliquement d'un poste de traitement au suivant, dans laquelle le poste d'extraction (8) définit le point de démarrage (9) d'un cycle, dans laquelle la presse à tuiles (1) comprend un capteur de défaut (10) pour détecter un contenu (19) du moule inférieur (6),
    caractérisée en ce que le capteur de défaut (10) est disposé par rapport à un cycle du dispositif de déplacement (5) après le point d'extraction (8) et avant le poste de pressage (7), dans la direction de déplacement (100).
  2. Presse à tuiles selon la revendication 1,
    caractérisée en ce que les postes de traitement comprennent un poste de rejet (11) pour enlever le contenu (19) resté dans le moule inférieur (6) après l'extraction d'une pièce moulée pressée (22) hors du moule inférieur (6), en ce que le poste de rejet (11) est disposé par rapport à un cycle du dispositif de déplacement (5) après le point d'extraction (8) et avant le poste de pressage (7), dans la direction de déplacement (100), et en ce que le capteur de défaut (10) est disposé par rapport à un cycle du dispositif de déplacement (5) après le point de rejet (11), dans la direction de déplacement (100).
  3. Presse à tuiles selon la revendication 1 ou 2,
    caractérisée en ce que les postes de traitement comprennent un poste de remplissage (12) pour remplir le moule inférieur (6) avec une ébauche à presser (2), en ce que le poste de remplissage (12) est disposé par rapport à un cycle du dispositif de déplacement (5) après le point d'extraction (8) et avant le poste de pressage (7), dans la direction de déplacement (100), et en ce que le capteur de défaut (10) est disposé par rapport à un cycle du dispositif de déplacement (5) après le point d'extraction (8) et avant le poste de remplissage (12), dans la direction de déplacement (100).
  4. Presse à tuiles selon l'une des revendications 1 à 3,
    caractérisée en ce que le capteur de défaut (10) est conçu pour détecter le volume du contenu (19) du moule inférieur (6).
  5. Presse à tuiles selon l'une des revendications 1 à 4,
    caractérisée en ce que la presse à tuiles (1) comprend un dispositif de commande (13), et en ce qu'un premier signal est produit dans le dispositif de commande (13) si le capteur de défaut (10) détecte un contenu (19) dans le moule inférieur (6).
  6. Presse à tuiles selon les revendications 4 et 5,
    caractérisée en ce que la production du premier signal dépend du volume du contenu (19) détecté.
  7. Presse à tuiles selon la revendication 5 ou 6,
    caractérisée en ce que le capteur de défaut (10) est conçu pour la détection d'une variation de la forme du moule inférieur (6), et en ce qu'au-dessus d'une valeur limite pour un écart maximal autorisé de la forme réelle du moule inférieur (6) par rapport à une forme idéale du moule inférieur (6), un signal d'avertissement est produit dans le dispositif de commande (13).
  8. Presse à tuiles selon la revendication 7,
    caractérisée en ce que le signal d'avertissement provoque un arrêt de fonctionnement de la presse à tuiles (1).
  9. Presse à tuiles selon l'une des revendications 1 à 8,
    caractérisée en ce que le capteur de défaut (10) est un capteur optique.
  10. Presse à tuiles selon la revendication 9,
    caractérisée en ce que le capteur de défaut (10) est une caméra 3 D.
  11. Procédé pour le fonctionnement d'une presse à tuiles pour la fabrication d'une pièce moulée pressée (22) à partir d'une ébauche plastique (2), dans lequel la presse à tuiles (1) présente un moule inférieur (6) pour recevoir l'ébauche à presser (2), dans lequel la presse à tuiles (1) présente des postes de traitement pour le traitement de l'ébauche (2) et de la pièce moulée pressée (22), dans lequel les postes de traitement comprennent un poste de pressage (7) pour l'ébauche à presser (2), et un poste d'extraction (8) pour la pièce moulée pressée (22) hors du moule inférieur (6), dans lequel le moule inférieur (6) est déplacé cycliquement d'un poste de traitement au suivant, dans lequel le moule inférieur (6) est tout d'abord déplacé, rempli avec une ébauche (2), jusqu'au poste de pressage (7), puis déplacé jusqu'au poste d'extraction (8), dans lequel le moule inférieur (6) est ensuite déplacé à nouveau jusqu'au poste de pressage (7),
    caractérisé en ce qu'après une extraction de la pièce moulée pressée (2) au poste d'extraction (8), avant que le moule inférieur (6) n'atteigne à nouveau le poste de pressage (7) on détecte à l'aide d'un capteur de défaut (10) de la presse à tuiles (1) si un contenu (19) est resté dans le moule inférieur (6).
  12. Procédé selon la revendication 11,
    caractérisé en ce que le volume du contenu (19) resté dans le moule inférieur (6) est défini, et en ce qu'au-dessus d'une première valeur seuil pour le volume du contenu (19), il ne se produit pas de remplissage du moule inférieur (6) avec une ébauche (2) fraîche avant que le moule inférieur (6) n'atteigne à nouveau par un déplacement le poste de pressage (7).
  13. Procédé selon la revendication 12,
    caractérisé en ce qu'un arrêt de fonctionnement de la presse à tuiles (1) se produit quand un moule inférieur (6) avec un contenu restant (19) n'a pas été rempli avec une ébauche (2) fraîche et quand on détecte, après une nouvelle tentative d'extraction du contenu restant (19) qui s'est produite au poste d'extraction, qu'il reste toujours dans le moule (6) un contenu (19) dont le volume est situé au-dessus de la première valeur seuil.
  14. Procédé selon la revendication 12 ou 13,
    caractérisé en ce qu'au-dessous de la première valeur seuil pour le volume du contenu (19) resté dans le moule inférieur (6) et au-dessus d'une deuxième valeur seuil, inférieure, un remplissage du moule inférieur (6) avec une ébauche (2) fraîche se produit avant que le moule inférieur (6) n'atteigne à nouveau par un déplacement le poste de pressage (7), en ce que l'ébauche (2) fraîchement mise en place est pressée au poste de pressage conjointement avec le contenu (19) resté dans le moule inférieur (6) en une pièce moulée de rebut, en ce que la pièce moulée de rebut est non pas extraite au poste d'extraction (8), mais enlevée du moule (6) à un poste de rejet (11).
EP17400065.3A 2017-11-16 2017-11-16 Presse à tuiles et procédé de fonctionnement d'une presse à tuiles Active EP3486054B1 (fr)

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EP17400065.3A EP3486054B1 (fr) 2017-11-16 2017-11-16 Presse à tuiles et procédé de fonctionnement d'une presse à tuiles

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EP3486054B1 true EP3486054B1 (fr) 2020-04-22

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR670692A (fr) * 1929-03-02 1929-12-02 Tuileries De Marseille Soc Gen Appareil de sécurité pour presse à mouler
DE2200528A1 (de) * 1972-01-07 1973-07-19 Ludowiei Michael Christian Verfahren zum abnehmen von formlingen von einer revolverpresse und vorrichtung zum durchfuehren des verfahrens
US5064043A (en) * 1990-04-10 1991-11-12 Cincinnati Incorporated Vision system
DE19547612C2 (de) * 1995-12-20 2000-05-25 Moll Gmbh Maschinenbau Verfahren und Vorrichtung zum Zuführen von Tonbatzen zu einer Dachziegelpresse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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