EP1439922B1 - Transport de feuilles a haute vitesse sans pinces de prehension - Google Patents

Transport de feuilles a haute vitesse sans pinces de prehension Download PDF

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Publication number
EP1439922B1
EP1439922B1 EP02802271A EP02802271A EP1439922B1 EP 1439922 B1 EP1439922 B1 EP 1439922B1 EP 02802271 A EP02802271 A EP 02802271A EP 02802271 A EP02802271 A EP 02802271A EP 1439922 B1 EP1439922 B1 EP 1439922B1
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EP
European Patent Office
Prior art keywords
panel
feed
region
panels
feed device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02802271A
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German (de)
English (en)
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EP1439922A2 (fr
Inventor
Gerd Von Allwoerden
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.)
Silgan Holdings Inc
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Silgan Holdings Inc
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Filing date
Publication date
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Publication of EP1439922A2 publication Critical patent/EP1439922A2/fr
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Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/026—Combination of two or more feeding devices provided for in B21D43/04 - B21D43/18
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
    • B21D43/11—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers for feeding sheet or strip material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6582—Tool between tandem arranged work carrying means

Definitions

  • the invention relates to a feed device and an associated method for transporting plate-shaped plates made of sheet metal (so-called panels) to a work area in which the panel is processed, according to the preamble of claim 1 or 19.
  • the processing may include a stamping operation in which blanks are punched out of the board, which are arranged close together, spaced apart by a remaining skeleton on the board.
  • feed devices in short also “device” of the prior art, which is attacked with grippers at the rear end, ie the edge remote from the tool area edge of the plate, to the panel via a feed table, which is immovable, towards the tool area to promote and thereby position with an indexing movement in the y- and x-direction so that the discs can be punched out of the panel by lined up in a row stamp closely adjacent.
  • the punches have a greater distance than the centers of the blanks on the board, so that a pure lateral movement of the panel relative to the punches is required to ensure the density of the blanks and the remaining skeleton after punching as low as possible hold.
  • speed is also a decisive influencing factor for the costs incurred during production, which must be minimized.
  • Another prior art implementation is to use only a single gripper which, after its advancing movement, makes a fast return movement in the -y direction to thereafter align the aligned and positioned new plate at the side facing away from the tool area to grab backward (edge) and advance into the tool area. Due to the high speed, synchronization problems can occur when transferring the board from a loading area via a board transfer position into the feed area, which do not allow a higher speed. In addition, they are both Catching the reason that at the rear end portion of the panel, a strip area can not be edited by the tool, after here the force required for the movement by selective gripping (in the sense of a small point of attack for the clamping force the gripper) is initiated.
  • the strip area (usually also called gripper trim) is to be reduced as much as possible, the punching out of the last row of round blanks is provided with an increased safety problem if the grippers reach into the tool area and very close to the punching or embossing dies ,
  • the invention eliminates the use of pliers or grippers for purposes of advancing the panel. This also eliminates the selective introduction of the feed force at the rear end, so that edge portion of the panel, which faces away from the tool. Instead, the force is substantially flat, such as line, band or strip-shaped, applied to the panel to index them in the tool area retract (claim 5).
  • the endless systems used for this, in particular ribbon-shaped endless systems are circumferential drive belts, which are arranged with their surfaces on a longitudinal section in a plane next to each other and thus enable a nearly full-surface drive, although they each strip-shaped support the supporting panel (claim 8).
  • a "panel” is a tabular plate made of sheet metal and thus used as a symbol technically understood in the claims.
  • a substantially continuous promotion, without the punching device performs teaching strokes at a regular punching cycle is achieved by two stacked panel feeds, each of which exerts a substantially flat holding function on the surface of the panel. One panel is hanging, the other panel is placed lying on the tool area. A resulting between the successively funded panels cross gap is so small in the longitudinal direction that can be spoken of an alternating and thereby seen from the tool ago virtually continuous supply of the individual panels (claim 1).
  • Magnetic surfaces of the bands can be used to apply holding force to the panels (claim 10).
  • Alternatives to applying the force are to use negative pressure when the surfaces of the bands of the sheet feeds have openings with which a tensile force (as holding force) can be applied to the sheets.
  • the advantages of the invention lie in a possible increased speed and safety.
  • the safety is increased because the rear attacking pliers fall away.
  • the speed can be increased without the panel deforms from its level position, which is difficult to fulfill in a rear attacking pliers thrust and increased speed.
  • the times can be reduced and the risks that synchronizations cause to synchronize the panel with the grippers at the beginning of the feed can be reduced.
  • the "benefit" from a slab can be further increased because no strip area needs to be left unprocessed in place of the earlier engagement of grippers.
  • the yield (utility) can be increased and more freedom is gained in the design of the tool that processes the panel.
  • the safety and less susceptibility to interference is also improved by the fact that a resting support table, which supports the panel during the advance of the gripper according to the prior art, is no longer required and thus unevenness, residual sheet particles or irregularities on the surface of this conveyor table fall away.
  • the conveyor table moves according to the invention is formed by a Variety of individual endless systems, each independently on its surface on a longitudinal portion of its longitudinal extension holding or supporting force applied to the panel.
  • a further sheet feed can be provided in the outlet of the tool area (claim 6). It is the second panel feed using only one feed sheet feed; if, on the other hand, two panel feeders are used one above the other at the entrance, then it is the third panel feed.
  • This arranged in the direction of passage y behind the tool feed works synchronously with the feed device arranged in front of the tool together.
  • This synchronous movement relates to the indexing movements that take place in the y- and x-direction (main direction y), so that the panel is guided as it passes through the tool in front of and behind the tool: In front of the tool by holding the plate, behind the tool by assuming the example residual grid after punching of blanks by the punching device.
  • the feed is thus composed of a thrust and a tensile force in a continuous plane, which consists of inlet level, outlet level and the worktable surface of the tool device.
  • the panel can be processed by the provision of the conveyor on the outlet side to the end of the rear edge, so no longer needs a strip-shaped residual web on which in the prior art so far applied the grippers their holding power.
  • both the inlet side as well as the outlet side may be provided with a non-straight edge, resulting in a mutual alignment of the discs by offsetting the centers to allow maximum utilization of the metal sheet.
  • the plates having the trapezoidal shaped edge at the front and rear ends of the plate with respect to the conveying direction y moreover, can be shortened the sideways movement in stepwise indexing of the plate during the feeding.
  • a shortened sideways movement has the consequence that the processing takes place more quickly and more processing devices, in particular more punching or pressing punches, are accommodated on a given width can.
  • the first embodiment according to Figure 1 shows a compilation of components used.
  • a feed device 10 above and a non-visible similar feed device 11 below is equipped with a plurality of parallel endless belts, in the example ten juxtaposed tapes 10a to 10k.
  • the middle band 10e is symbolically selected.
  • This conveyor is aligned with a work area W, which in the example is formed with a punch 50 which extends transversely.
  • a feed device 20 which is constructed similarly to the feed device 10. It is partially covered with the inner conveyor belts by a discharge system 29.
  • the conveyor belt 20e can be seen as a longitudinal continuation of the inlet conveyor belt 10e.
  • the infeed conveyors 10, 11 as the first panel feeders and the outfeed conveyer 20 as the further sheetfeed are arranged with respect to the tool 50 in its inlet area and outlet area.
  • the conveying direction y is the longitudinal direction.
  • a series of working punches extends in the tool 50, as can be seen from FIG .
  • the punctured here punches 50 with individual punches 50a, 50d and 50e, work in common with a high frequency of up to 300 strokes per minute, corresponding to an operating frequency of 5 Hz.
  • the main conveying direction is y as the feed direction or longitudinal direction.
  • the endless belt systems 10a to 10k, 11a to 11k and 20a to 20k are arranged adjacent in FIG. 1, and the adjusting stroke takes place, which serves for positioning.
  • Figure 1 also shows the lead-in area of the infeed panel transport 10,11 with two panel stacks L1 and L2, which are arranged on both sides of an alignment station A with an H-shaped alignment and support means.
  • sheets are first stacked from one side, placed on the alignment station A (from the side). Subsequently, an alignment process takes place, which aligns the sheet metal currently being fed so that it is properly aligned after feeding to the feed device 10,11 relative to the tool 50 at the workstation. If the one stack L1 is exhausted, the second stack of metal sheets placed on the other side of the alignment station A can be used directly, from which now the metal sheets are stacked and fed from the right side to the alignment station A.
  • the switch plate 9 At the alignment station A is followed by a switch plate 9, the can be pivoted about an axis in order to influence the alignment plates coming from the alignment in their height direction or altitude.
  • the switch plate 9 is pivotable by a small angle, which pivoting movement is synchronized with the feed of the current plate from the alignment station in the panel transport systems 10 or 11.
  • the axis is closer to the alignment station and the free end of the switch plate leads to a slight deflection of a supplied panel upwards when it is pivoted upwards; if the diverter plate is in its rest position or inclined slightly downwards, the panel is fed without height change from the alignment station to the lower panel transport system 11.
  • FIG. 1 The overview sketch of FIG. 1 is intended to clarify which components come to rest in the work area W at which point with respect to the tool-making device 50.
  • the function will be described on Figure 2 , in which the upper panel transport system with its circulating belts 10a to 10k omitted for clarity and a panel 1 is placed on the lower endless conveyor system 11 with its parallel bands 11 a to 11 k.
  • the Tafeistapel L1 and L2 and the alignment station A are omitted here and the tool 50 is shown in a schematic view so that its inside punch punches 50a to 50e are recognizable.
  • a discharge system 29 Downstream of the punching dies 50a to 50e of the punching device 50 is a discharge system 29 which removes the stamped blanks from the board in the transverse direction q along a path 30.
  • the plurality of blanks which are punched out at the same time, in short Ausblaskanälen using impulse compressed air from the position of the punch in the main conveying direction y moves, and at the end of the short y-channel pieces 31 a to 31 e with a magnetic cross Conveyor belt 33 at a transverse support means 32 in the said transverse direction q, which runs parallel to the x-direction, conveyed out together.
  • a look into the channel segments 31 a to 31 e can be seen in FIG .
  • the discharge system can be omitted, for example, if the job only serves to print on the surface of the panel, so the discs are still physically contiguous with the panel left.
  • the circulating belts 11 a to 11 k are driven synchronously. Serves a drive device 18 which is laterally flanged recognizable and a torque applied to a shaft 18w, which generates a rear deflection with reversing rollers and the drive of the endless belts. After positioning of the panel on the alignment area A of Figure 1, this is taken with lowered switch on the lower panel feed 11 and runs with a longitudinal movement of the conveyor belts 11 a to 11 k in the y direction to a defined distance in front of the tool position W. Hier the panel 1 "is stopped in the" waiting "position, detected by at least one sensor 28.
  • the panel waits until a panel, which has been conveyed before it and is processed by the tool, is completely conveyed to the tool by the advancing means located above to then be retracted smoothly, that is, without a free stroke of the up and down moving punches 50a to 50e, into the drawn first punching position of the plate 1, indicated by 1 'From this point on, the plate advances and indexes both in the y- as well as in the x-direction so that all predetermined round blanks, as shown in FIG 8 are shown as an example on a board, have been punched out of the drawn five punching dies.
  • the plate is thereby moved over a processing table 52 whose plane substantially corresponds to the plane 100 formed by the surfaces of the conveyor belts on which the table 1 comes to lie in the retracted position and in the first punching position.
  • the indexing movement is caused by a laterally arranged drive 17 and controlled by a control, not shown, in the exact position.
  • y forms in Figure 2 from left to right, the main feed direction, which is taken over by the movement of the bands 11 and also these bands are controlled by a controller so that the respective position of the discs is accurately reached under the punches.
  • the feed movement is switched off both in the x and in the y direction and the engagement of the punches takes place.
  • a new Indexierterrorism composed of a combination of an x and a y-step, to control the next position begins.
  • the indexing movement in the x direction is caused so that the entire feed device is displaced in the x direction, which affects all bands 11 a to 11 k simultaneously and synchronously.
  • Due to the common drive shaft 18w is also the movements in the y-direction synchronously and simultaneously designed, controlled by the motor drive 18, which puts a drive roller in a controlled rotation via a slip-free drive belt 18a, which has a sliding bearing for the shaft 18w in the axial direction.
  • the shaft 18w is axially movable in the drive roller, but not in the circumferential direction.
  • Such a shaft may be designed, for example, as a groove shaft or as a polygonal in a pinion axially displaceable in order to reduce the weight that must be moved with the feed in the x direction. Only the shaft 18w, the motor 18 and the associated drive belt 18a are moved.
  • the spout in Figure 2 shows a plurality of parallel endless systems 20a to 20k of the sheet feeding device 20, wherein also their longitudinal movement in the y direction of a laterally flanged drive 26 with a belt transmission 26a and a pinion 26b is performed on a shaft 26w, which on the of the Stamping device facing away from the second panel feed device 20 is arranged.
  • a Indexierterrorism is possible, which is made in the same way as the Indexierterrorism the panel feed 11 on the inlet side, on the outlet side of a drive 27.
  • the outlet side is also to be understood as a kind of feed, with an effect on the panel section, which is still on the inlet side.
  • the full-scale panel on the inlet side is on the outlet side, however, only the skeleton after punching available, but which represents a physical connection and thus is able to transmit forces. If, instead of the punching device, another processing device is selected on the working region W, the plate can still be completely present, if e.g. a printing or a surface coating is made only that makes no changes to the mechanical consistency of the overall board.
  • the side view shows schematically the togetherness of the work table 52 of the punching device in the work area W, wherein an inlet conveyor belt 11 with parallel endless systems and a discharge conveyor system 20 also with several parallel endless systems is shown.
  • these endless systems closely abut the work plate 52, which may be slightly tapered to receive the schematically drawn panel 1 during the feeding movement as the endless conveyor system 11 at the inlet conveys it along the y direction.
  • the conveying plane 100 is located, which corresponds substantially to the surface of the bands, but can also come in the plane of a just-promoted metal sheet 1 to lie, or can be formed by the surface of the table 52 ,
  • the circulating conveyor belt 10a is shown here in section and in section.
  • a tape base 62 is reduced in thickness over that of a conventional conveyor belt and is provided with teeth 61 on the inward side provided in the longitudinal direction y at a substantially equal distance. Between these teeth engages a corresponding toothed roller or roller of the drive shaft, so that a plurality of adjacent conveyor belts have no slip relative to each other.
  • a magnetic layer 63 is applied, which in the illustrated example is a film fastened by an adhesion layer 64 on the outer surface of the belt base 62, which is filled with magnetic particles or entirely permanent magnetic film is formed. It has a height of ⁇ 1 mm, in particular in the range between 0.5 and 1 mm, in order to obtain the elasticity and compliance of the band, but at the same time substantially flat on the surface to offer an opportunity to metallic sheets by magnetic adhesion in z direction and steer controlled in y direction.
  • a conveyor belt for applying adhesive force in the z-direction are those provided with flow or nozzle orifices for applying a force by negative pressure.
  • the circulating belts according to FIG. 7 are again illustrated in a section in the x-direction in FIG. 7a .
  • the magnetic layer 63 is provided in the y-direction (perpendicular from the plane of the paper) for feed purposes in FIG. 7 schematically drawn panel 1 is moved.
  • a lateral guide 65a, 65b is provided for the tape base 62, in the areas 62a and 62b of the lateral guides held in z-direction.
  • the guides are designed as U-shaped rails or profiles, which protrude below the band more in the x direction inwards, than above.
  • the thickness of the rail is substantially matched to the thickness of the magnetic layer 63, so that over the entire transverse direction b 10 of the belt and the lateral guide a substantially uniform surface is created. If the magnetic layer 63 protrudes slightly in height with respect to the guides, that is, if it is raised above them, the friction of the plate on the lateral longitudinal guides 65a, 65b is reduced.
  • the bands are free, without lateral guidance.
  • the band back 62 is significantly reduced compared to the usual band back of timing belt, the height of the teeth 61 is greater than the thickness of the band back.
  • a training with teeth and a different design of the band can be selected to the inside, if a substantially slip-free transmission of the movement of the drive shafts 18w and 26w is possible. It should be taken into account that the drive shaft 18 w exerts a sliding movement on the bands 11 a to 11 k, that is further away from the work area W, as a deflection 18v, which is located close to the work table 52.
  • the outlet conveyor 20 is a lateral guide uncritical and possibly unnecessary, because here is a feed movement by a pulling movement to the local parallel bands 20a to 20k, wherein the deflection 26v near the work table 52 with respect to the direction of movement assigned only deflection and no drive function receives.
  • the working device in the work area W can be designed so that it occupies less space or can use a punching device with a different layout, so can be selected for the feed endless system 11 and a drive means on the shaft 18v to here lateral guides To be omitted, as long as the length of the band allows this to prevent sagging.
  • the panels processed with the device according to FIG. 1 and in the functional representation of FIG. 2 can, in the case of the punching device 50, be used to produce round blanks R with which metal closures for glasses for wide-mouth bottles can be produced.
  • a shaping on the blanks so that they receive a peripheral skirt edge, which are later provided with a sealant and Verschwinnocken to serve as a bottle cap.
  • round shapes when the closures are to be applied by a rotational movement but it can also find other rounded shapes use that are not rectangular or square. Due to their shape, the occupancy or filling of the board is a decisive factor for the amount of the "benefit" in the sense of maximum utilization of Ronde surfaces, based on the board surface.
  • the drawn in Figure 8 panel shows a variety of closely spaced round blanks, depending on the viewing direction given a certain orientation of the discs to each other.
  • a movement y 'of the panel from right to left for the prior art and from the top to in the direction y for use in the panel feed of Figure 1 should be assumed.
  • On the upper and lower sides of the panel has a wave-shaped training, which may be designed trapezoidal or rounded (so-called "scroll edge").
  • the leading edge 1v and rearward edge 1r form for the device of FIG. 1 the leading edge and the trailing edge, respectively, which last passes through the processing device W.
  • the side edges 1 d and 1 e are smooth and straight.
  • the first row R1 is the one which first enters the tool device 50 at the work station W, as shown in FIG.
  • each oriented in the y-direction columns of blanks are offset by a half distance from the center of the adjacent row, so that the curves of the blanks can be close together.
  • a first row R1 of round blanks which are not closely adjacent to each other, is produced at the front edge 1v, but have a clear spacing in the x-direction, which is denoted by c in the first and second rows R1, R2. This distance is greater than the distance which two x-direction grid lines have in the y direction from each other.
  • These comparative grid lines yield by connecting the centers M of the first and third row of blanks in the x direction.
  • the panel with its scrolled (jagged or wavy or not straight) front end 1v moves into the processing device 50, then all the front round blanks of the series R1 are processed in a working stroke of the press 50, which moves the punches. Due to the larger distance c, the punches can be arranged so that no pure transverse thrust in the x-direction for the completion of processing the first row is more necessary and an indexing to the next row R2 can be made shorter and faster than when first in the first Row R1 would have to be a side movement would be there to edit any existing more closely spaced round blanks in a second stroke.
  • the gripping points 2 a, 2 b drawn in dashed lines would serve, which the prior art uses on a strip GTR with the width b.
  • This advancing direction drawn as y ' is that of the prior art, wherein it can be seen that the gripper surface at the edge 1 e is very small compared to the total area of the panel 1, but the strip width b at the expense of the total benefits.
  • the blanks serve as an example and do not necessarily have to be of a circular design, it is also possible to speak of surface pieces which are to be arranged on the board in order to be able to extract a maximum useful surface area from the panel, with a smallest possible residual web portion. which is determined in its width by the closest adjoining edge regions of the surface pieces and by the properties of the machining tool, that is, for example, the punching device, which requires a predetermined minimum residual web to perform the cut clean can.
  • a connecting line of the centers of the third row R3 and a connecting line of the centers of the first row R1 is used to determine their distance "d". This presupposes necessarily that there also exists an intermediate second row of blanks whose centers can be connected through a connecting line intended to form a second connecting line lying between the first and the third connecting line. This has the distance d / 2 from the first and from the second connecting line.
  • FIG. 1 in FIGS. 3 to 6 In addition to the continuous feed function of panels, the side views and front views of the arrangement of FIG. 1 in FIGS. 3 to 6 will be described in more detail in their construction.
  • a gap 12 between an upper plate feed 10 and a lower plate feed 11 is formed, which is designated in Figure 4.
  • This gap is higher or stronger than the thickness of a panel 1, as explained in Figure 8 and located in the lead-in area on the lower panel feed 11 in Figure 2.
  • a wedge-shaped tape guide of the upper feed belts and the lower feed belts 11 can be seen. It is elongate and aligned with the tool area W, which is represented by the lead-in level 100, which comes to lie in the gap 12.
  • the two conveyor belt sections of the endless conveyor belts arranged in parallel in gap 12 are provided with the magnetic surface, as explained in FIG.
  • the upper feeder 10 can be lifted by a lifting device 19 from two spaced lifting cylinders 19a, 19b, relative to the lower sheet feeder 11.
  • Both panel feeds 10 and 11 are in their entirety in the x-direction controlled movable, which is achieved by drive 15 for the upper panel feed and drive 17 for the lower panel feed 11, which move via a spindle drive 15a and 17a, a frame geometry, which carrying respective endless belt panel conveyor and carry movable relative to a main frame.
  • the lower panel conveyor 11 is also located at a rearward position via a drive means 18 and a belt drive 18a Shaft 18w powered.
  • the rotational movement of the motors 16 and 18 is controlled as the y-advance movement is required during machining.
  • the drive motors 15, 17 of the spindle drives 15a, 17a are likewise controlled in such a way as the x movement is required stepwise during the machining in the tool area W. Both movements are superimposed for the upper and the lower sheet feed, these sheet feeds are not active at the same time, but successively.
  • a panel fed first for example to the lower panel feeder 11, causes the upper panel feeder 10, with its conveyor belts, to be free to pick up and hold a next panel.
  • the conveyor belts apply z-forces (eg magnetic)
  • the second panel can also hang on the underside of the upper conveyor belt 10 in a waiting position until the lower panel of the lower panel feed 11 has been worked off by the tool.
  • the upper panel feeder feeds and positions for processing in the Tool and the bottom panel feed 11 picks up the next panel and holds it in waiting position.
  • the acquisition of a respective panel to the upper or lower feed controls the switch 9 by changing their position.
  • a rail system is provided, with which both panel feeds can be extended and retracted.
  • Retraction and extension refers to moving a main supporting frame on tracks or rails toward and away from the tool area W. This is shown in FIG. 3 for the sheet feed at the inlet and FIG. 5 for the sheet feed at the outlet.
  • tracks or rails 41 a are provided on a base 41 and sliders 41 a 'slide on the rails to allow movement of the supporting frame 41 b, on which the entire assembly rests against the rails 41 a and opposite the work area W. The same is provided at the feed at the outlet.
  • the base 41 is the same foundation on which rails 44a rest which guide sliders 44a 'on the underside of a main supporting frame 44b, 45b.
  • a stop may be provided at the inner end of the rails 44a for striking the supporting frame 44b at its end position closest to the working area W.
  • the movement in the x-direction is structurally realized by a guided in this direction displaceable frame structure relative to a non-displaceable frame structure 41 c above the lower frame 41 b.
  • the upper part 42 of the intermediate frame 41 c is hinged via a joint 42a and the lifting cylinder 19 for maintenance against the lower part.
  • the sliding frame construction is for the upper drive means 15 a system of transverse struts and guides, as well as for the lower drive system 17. To unify the overhead guide system for the belt drive 10 will be described, with an immediate transferability to the lower drive system 17, wherein the indexes are each transferable, eg the upper element 15a corresponds to the lower element 17a, etc.
  • the overhead spindle drive 15a translates its movement to x-directional struts 15f, two of which are provided having a width in the transverse direction, the at least some of the conveyor belts spans. Perpendicular to this, evenly spaced further struts 15d are provided, each arranged between two bands and outside the edge of the outermost band.
  • longitudinal struts 15d are supported by sliders 15c on support frames 15b on which they can slide, caused by the movements transmitted to the belt system 10 by the drive means 15 via the spindle drive 15a and the cross braces 15f.
  • the longitudinal drive 16 is not moved, but moves the shaft 16w guided in the axial direction in pinions or drive rollers, which are axially immovable. They are controlled by the drive 16 with a belt drive 16a.
  • a frame 44b, 45 carries the movable in the x-direction table from several adjacent belt conveyors 20a to 20k.
  • a shaft 26w is provided, which can be jointly controlled by a controlled drive 26 with a belt strap 26a in a controlled rotational movement to perform stepwise y movement. This rotational movement is synchronized with the rotational movement of just the panel to the tool promoting panel feed 10 or 11 in the inlet region of the tool, there the drive 16 or 18th
  • the panel feeder 20 also has z-forces, e.g. Magnetic surfaces on the individual endless belts 20a to 20k and therefore can also apply forces in the z direction on a particular metallic panel.
  • z-forces e.g. Magnetic surfaces on the individual endless belts 20a to 20k and therefore can also apply forces in the z direction on a particular metallic panel.
  • the indexing movement in the x direction is achieved with a controlled motor 27 and a spindle drive 27a relative to the frame 45.
  • This movement in the x direction is synchronized with the movement via the spindle drives 15, 15a or 17, 17a in front of the tool.
  • the drive system in the x-direction for the feed is also configured as described with respect to the drive elements 15. Here are these drive elements at the same indexes accordingly 27, based on the controlled motor 27.
  • 27f are the cross braces, with which of the spindle drive 27a, the indexing movement is transmitted to the endless belts 20.
  • longitudinal struts 27b are provided, which are arranged between and outside of the endless belts and slide on sliders 27c, which are arranged on mounting rails 27b.
  • the support rails 27c are opposite to the Frame 45 immovable, which in turn is displaceable on the longitudinal rails 44a for a better access to the tool area, but not during the operation of the feed.
  • the spout is in accordance with Figure 6 in the side view, where the plane 100 is the continuation of the plane 100 of Figure 4, wedge-shaped, directed towards the tool area W.
  • a flat discharge system 29 is provided which has a gap forms the top of the conveyor belts 20a to 20k and the exhaust channels 31 a to 31 e carries.
  • the band 33 Perpendicular to this runs the band 33, which is held by the support means 32 and which may also be magnetic to receive the punched blanks up and laterally in the transverse direction q, as shown in Figure 2 and 1, convey off.
  • a panel fed into the tooling area is already held by the panel conveyor 20 in the outlet prior to the last operation on the last row, which is close to the rear edge 1 r of FIG. 8, and held in synchronism with the movement of the infeed conveyor belts 10 or 11 , whichever moves the panel, moves.
  • the discharge conveyor can take over the task of the infeed conveyor, even before the last stroke for the last punching operation is carried out. The remaining skeleton after punching is this mechanically strong enough to absorb tensile forces to convey out.
  • sensors 28 (28a top, 28b bottom) can be seen, which are arranged at the infeed panel feed 10 or 11 so that the position 1 "of Figure 2 with respect to the panel 1 is reliably detected
  • An inductive proximity sensor has been found to be advantageous for being located below the plane defined by the surfaces of the bands, and its y-directional distance from the tool is determined by the initial position of the panel.
  • the drive switches off 16 or 18, which generates the feed motion in the y-direction for each affected feed 10 or 11.
  • the feed process comes without any idle strokes of the constant frequency working tool device 50 from.
  • the supporting force is applied from the flat side of the plates forth. Also, the feed force is applied from the flat side, so that undulations or deformations can be safely avoided at higher feed rates.
  • the length of the panel section supported by the infeed panel feed changes in favor of increasing the length in the outlet.
  • the support function in the inlet thus changes the support surface on the flat side of the panel, based on the total area of the panel. It is not a punctual introduction of force, which is transmitted in one or two small places, but a substantially flat transmission, which is a large area, but need not be over the entire surface.
  • this residual plate length can be in the form of blanks between 11 ⁇ 2 rows and three to four rows.
  • the length of the panel feed 20 in the outlet area may be shorter than that in the inlet area, since in the outlet area the entire panel must never be supported, but only a small part of its length. In any case, however, the discharge feed is already active before the last punch stroke processes the last row Rn of surface pieces.
  • the conveyor in the outlet is therefore not only an element for tearing out a residual grid from the work area, immediately after the last stroke, but a controlled also working with the inlet panel conveyor feeder, only in the output area of the tool.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Specific Conveyance Elements (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)
  • Punching Or Piercing (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Laminated Bodies (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Collation Of Sheets And Webs (AREA)
  • Feeding Of Workpieces (AREA)
  • Press Drives And Press Lines (AREA)

Claims (25)

  1. Dispositif d'avance pour des plaques en tôle de forme tabulaire, dénommées ci-après panneaux (1, 1'), pour déplacer les multiples panneaux (1, 1') dans ou à travers une zone de travail (W ; 50), dans laquelle les panneaux sont usinés, en particulier par découpe à la matrice de flans circulaires, façonnage de flans circulaires matricés ou modification de la surface d'un panneau ;
    lequel dispositif d'avance présente une première et une deuxième unités d'avance de panneaux (10, 11), qui acheminent à la commande, en alternance, des panneaux à la zone de travail (W) pour les usiner en position précise dans la zone de travail ;
    caractérisé en ce que
    - la première unité d'avance de panneaux (10 ; 10a, 10b, ..., 10k) est disposée, au moins pendant la durée d'un acheminement suspendu d'un premier panneau (1) à la zone de travail (W), au-dessus de la deuxième unité d'avance de panneaux (11 ; 11a, 11b, ..., 11k), qui achemine ensuite un deuxième panneau en appui et parallèlement au premier panneau.
  2. Dispositif d'avance selon la revendication 1, dans lequel la première unité d'avance de panneaux (10) est disposée, pendant toute la durée d'acheminement des premier et deuxième panneaux (1) au-dessus de la deuxième unité d'avance de panneaux (11).
  3. Dispositif d'avance selon la revendication 1, dans lequel la deuxième unité d'avance de panneaux (11 ; 11a, ..., 11k) est disposée, pendant la durée d'acheminement du premier panneau (1), au-dessous de la première unité d'avance de panneaux (10) pour recevoir un deuxième panneau et le maintenir en position d'attente (1"), avant même que le premier panneau ne quitte la première unité d'avance de panneaux (10), si bien que deux panneaux se retrouvent à distance l'un de l'autre et l'un au-dessus de l'autre, au moins pendant une certaine période de temps du mouvement d'avance.
  4. Dispositif d'avance selon la revendication 3, dans lequel la deuxième unité d'avance de panneaux (11) est disposée au-dessous d'un plan d'entrée et de passage (100), essentiellement défini par la position d'une plaque d'usinage (52) dans la zone d'outil (W).
  5. Dispositif d'avance selon la revendication 1, dans lequel une ou l'unité d'avance de panneaux (20) disposée sur le côté de sortie de la zone de travail (W) reçoit, en particulier soutient, le panneau usiné, en particulier la tôle perforée résiduaire restant après le matriçage des flans circulaires, et l'achemine en synchronisme avec les mouvements (x,y) de l'unité d'avance de panneaux (10 ; 11) sur le côté d'entrée, avant même qu'une dernière série de flans circulaires (Rn) ne soit usinée, en particulier matricée, par l'outil (50).
  6. Dispositif d'avance selon la revendication 1, dans lequel il est prévu une autre unité d'avance de panneaux (20), qui forme un prolongement des première et deuxième unités d'avance de panneaux (10, 11) pour soutenir des panneaux usinés dans la zone de travail (50), en particulier une tôle perforée résiduaire après matriçage de flans circulaires (R) du panneau respectif, sur le côté de sortie de la zone de travail (W), avant même qu'une section d'extrémité d'un panneau respectif ne soit déplacée jusque dans la zone de travail.
  7. Dispositif d'avance selon la revendication 1, dans lequel on agence devant les première et deuxième unités d'avance (10, 11) un aiguillage réglable (9), qui influence le parcours d'un panneau à partir d'une zone d'alignement (A) de manière à diriger le panneau vers la première (10) ou la deuxième unité d'avance de panneaux.
  8. Dispositif d'avance selon la revendication 1, dans lequel chaque unité d'avance de panneau (10, 11) présente plusieurs systèmes sans fin disposés l'un à côté de l'autre (10a, 10b ; 11a, 11b) et les deux groupes de systèmes sans fin sont agencés et alignés de sorte qu'ils possèdent des surfaces tournées l'une vers l'autre, qui définissent un intervalle (12) qui est plus grand que l'épaisseur d'un panneau.
  9. Dispositif d'avance selon la revendication 8, dans lequel chaque système sans fin présente un parcours de bande orienté en coin en direction de la zone d'outil (50).
  10. Dispositif d'avance selon la revendication 1, comportant un mécanisme d'entraînement à bandes constitué d'au moins deux bandes rotatives parallèles (10a, 10b ; 11a, 11b ; 20a, 20b), dans lequel les bandes rotatives présentent une couche de surface sensiblement plate (63) formée d'un matériau magnétisable ou magnétique sur la face externe et sont pourvues, du côté d'entraînement opposé à la face externe, de saillies (61) qui empêchent un glissement de la bande rotative dans le sens d'entraînement.
  11. Dispositif d'avance selon la revendication 10, dans lequel la bande rotative respective présente une longueur plus grande que sa largeur et est, en particulier, soutenue ou guidée latéralement au moins sur une section de sa longueur (65a, 65b).
  12. Dispositif d'avance selon la revendication 10, dans lequel la bande rotative présente sur sa face externe une couche magnétique (63), qui a une épaisseur de moins de 1 mm et contient un matériau à aimantation permanente.
  13. Dispositif d'avance selon la revendication 12, dans lequel la couche est une feuille qui est collée, au moyen d'une couche adhésive (64), au dos (62a) d'une base (62), pourvue de saillies (61), de la bande rotative.
  14. Dispositif d'avance selon la revendication 10, présentant des dents disposées à intervalles sensiblement réguliers dans la direction longitudinale.
  15. Dispositif d'avance selon la revendication 9, dans lequel la conformation en coin est allongée.
  16. Dispositif d'avance selon la revendication 1, dans lequel les unités d'avance de panneaux (10, 11) sont maintenues respectivement par un cadre (15f, 15d ; 17f, 17d) de manière à pouvoir se déplacer dans le sens des x et peuvent être entraînées par un arbre d'entraînement (18w, 16w) dans le sens des y, un moteur commandé respectif (15, 17 ; 16, 18) pour l'entraînement dans le sens des x et des y ne pouvant être déplacé conjointement.
  17. Dispositif d'avance selon la revendication 1, dans lequel au moins une zone d'empilement (L1, L2) de tôles est agencée latéralement dans la direction transversale à côté d'une zone d'alignement (A) en amont de l'unité d'avance de panneaux (10,11) dans le sens des y.
  18. Dispositif d'avance selon la revendication 17, dans lequel la zone d'alignement et l'unité d'avance de panneaux sont mobiles latéralement à côté de la zone d'empilement (41a, 41a') pour les décaler de la zone de travail sans déplacer la zone d'empilement.
  19. Procédé d'avance pour plaques en tôle de forme tabulaire ("panneaux"), comportant un déplacement des multiples panneaux (1,1') dans ou à travers une zone de travail (W ; 50), dans laquelle les panneaux sont usinés, en particulier par découpe à la matrice de flans circulaires, façonnage de flans circulaires matricés ou modification de la surface des panneaux ;
    lequel procédé d'avance fonctionne avec une première et une deuxième unité d'avance de panneaux (10, 11 ; 20), les panneaux étant acheminés à la commande à la zone de travail (W) et évacués de celle-ci pour être usinés en position précise dans la zone de travail; caractérisé en ce que
    (a) l'on dispose la première unité d'avance de panneaux (10 ; 11) sur un côté d'entrée de la zone d'outil et l'on prévoit la deuxième unité d'avance de panneaux (20) sur un côté de sortie de la zone d'outil ;
    (b) les deux unités d'avance de panneaux (10, 20 ; 11, 20) fonctionnent en synchronisme l'une avec l'autre en se déplaçant perpendiculairement l'une par rapport à l'autre (x, y) lors d'un avancement du panneau (1), le panneau entraîné conjointement par le mouvement synchrone étant maintenu par les deux unités d'avance de panneaux.
  20. Procédé selon la revendication 19, dans lequel l'avance des deux unités d'avance de panneaux se compose de sections de déplacement communes dans la direction longitudinale (y) et dans la direction transversale (x), mais la direction transversale sert principalement au positionnement et la direction longitudinale, principalement à l'avance.
  21. Procédé selon la revendication 19, dans lequel on dispose au-dessus de la première unité d'avance de panneaux (11), du côté d'entrée, une autre unité d'avance de panneaux (10) qui achemine, en alternance, avec la première unité d'avance de panneaux, les panneaux (1) à la zone d'outil (50) ainsi qu'à la deuxième unité d'avance de panneaux (20), pour éviter des périodes de travail à vide du dispositif.
  22. Procédé selon la revendication 19, dans lequel chaque unité d'avance de panneaux (10 ; 11 ; 20) présente plusieurs systèmes sans fin (20a, 10a, 11a) qui sont entraînés (16, 18, 26), pour chaque unité d'avance de panneaux, en synchronisme l'un avec l'autre dans la direction longitudinale et sont respectivement déplacés (17a, 15a, 27a) par commande mutuelle respective dans la direction transversale (x), le panneau étant non seulement avancé, mais également positionné (x, y) de manière précise dans sa position dans la zone d'outil (50).
  23. Procédé selon la revendication 19, dans lequel les unités d'avance de panneaux (10, 11) sont maintenues de manière à pouvoir être déplacées dans le sens des x, respectivement, par un cadre (15f, 15d ; 17f, 17d) et sont entraînées dans le sens des y par un arbre d'entraînement (18w, 16w), un moteur commandé respectif (15, 17 ; 16, 18) pour l'entraînement dans le sens des x et des y n'étant pas déplacé conjointement.
  24. Procédé selon la revendication 19, dans lequel au moins une zone d'empilement (L1, L2) de tôles est située en amont de l'unité d'avance de panneaux (10, 11) latéralement dans la direction transversale à côté d'une zone d'alignement (A), dans le sens des y.
  25. Procédé selon la revendication 19, dans lequel on déplace (41a, 41a') la zone d'alignement et l'unité d'avance de panneaux latéralement à côté de la zone d'empilement, ce qui les décale de la zone de travail, sans déplacer la zone d'empilement.
EP02802271A 2001-10-30 2002-10-28 Transport de feuilles a haute vitesse sans pinces de prehension Expired - Lifetime EP1439922B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10153481 2001-10-30
DE10153481 2001-10-30
PCT/DE2002/004031 WO2003037543A2 (fr) 2001-10-30 2002-10-28 Transport de feuilles a haute vitesse sans pinces de prehension

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EP1439922B1 true EP1439922B1 (fr) 2007-09-19

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EP (1) EP1439922B1 (fr)
CN (2) CN1907592A (fr)
AT (1) ATE373531T1 (fr)
AU (1) AU2002363160A1 (fr)
DE (2) DE10294963D2 (fr)
EA (1) EA005483B1 (fr)
ES (1) ES2294201T3 (fr)
HU (1) HUP0401961A2 (fr)
PL (1) PL204386B1 (fr)
WO (1) WO2003037543A2 (fr)

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KR101396909B1 (ko) * 2009-11-06 2014-05-19 히다카 세이키 가부시키가이샤 금속스트립의 이송 장치
US10507510B2 (en) 2016-09-30 2019-12-17 GM Global Technology Operations LLC Strip holding device for the die of a stamping system
CN108746388A (zh) * 2018-06-05 2018-11-06 深圳市舵轮自动化有限公司 用于数控冲床自动上下料设备
CN114082861B (zh) * 2021-11-17 2024-07-26 哈工大机器人南昌智能制造研究院 一种滚压成型设备自动下料装置

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Publication number Publication date
US7237421B2 (en) 2007-07-03
DE10294963D2 (de) 2004-09-09
HUP0401961A2 (hu) 2005-01-28
EA200400609A1 (ru) 2004-08-26
WO2003037543A2 (fr) 2003-05-08
PL204386B1 (pl) 2010-01-29
EP1439922A2 (fr) 2004-07-28
ATE373531T1 (de) 2007-10-15
ES2294201T3 (es) 2008-04-01
PL368406A1 (en) 2005-03-21
CN1907592A (zh) 2007-02-07
US20050020423A1 (en) 2005-01-27
DE50210937D1 (de) 2007-10-31
WO2003037543A3 (fr) 2003-09-18
EA005483B1 (ru) 2005-02-24
CN1582207A (zh) 2005-02-16
AU2002363160A1 (en) 2003-05-12

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