EP1439922A2 - Transport de feuilles a haute vitesse sans pinces de prehension - Google Patents

Transport de feuilles a haute vitesse sans pinces de prehension

Info

Publication number
EP1439922A2
EP1439922A2 EP02802271A EP02802271A EP1439922A2 EP 1439922 A2 EP1439922 A2 EP 1439922A2 EP 02802271 A EP02802271 A EP 02802271A EP 02802271 A EP02802271 A EP 02802271A EP 1439922 A2 EP1439922 A2 EP 1439922A2
Authority
EP
European Patent Office
Prior art keywords
feed
sheet
area
panel
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.)
Granted
Application number
EP02802271A
Other languages
German (de)
English (en)
Other versions
EP1439922B1 (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
Original Assignee
Amcor Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Amcor Pty Ltd filed Critical Amcor Pty Ltd
Publication of EP1439922A2 publication Critical patent/EP1439922A2/fr
Application granted granted Critical
Publication of EP1439922B1 publication Critical patent/EP1439922B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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-like plates (so-called plates) to a work area in which the plate is processed.
  • the processing can include a punching process in which circular blanks are punched out of the sheet, which are arranged close to one another, spaced apart by a remaining lattice on the sheet.
  • the invention also relates to a belt drive in which circulating belts take on the transport function of the board.
  • the starting point are feed devices of the prior art, in which gripping pliers at the rear end, i.e. the edge of the plate facing away from the tool area, are attacked in order to convey the board over a feed table which is immovable to the tool area and thereby with a To position the indexing movement in the y and x directions so that the round blanks can be punched out of the sheet by stamps lined up in a row in close proximity.
  • the stamps are at a greater distance than the centers of the round blanks on the plate, so that a pure lateral movement of the plate relative to the stamps is required to ensure the density of the round blanks and the remaining lattice after punching out as little as possible hold.
  • the speed is also a decisive influencing factor for the production costs, which must be minimized.
  • Another implementation from the prior art is to use only a single gripper which, after its feed movement, carries out a rapid return stroke movement in the -y direction, and then the aligned and positioned new plate on the side facing away from the tool area, in the following grasp back (edge) and advance into the tool area. Due to the high speed, synchronization problems that do not allow a higher speed can arise when transferring the sheet from a loading area through a sheet transfer position to the feed area.
  • This invention is achieved with a feed device according to claim 1, 5 or 15 or 17, with a belt conveyor device according to claim 10, or with a method for transporting plates according to claim 23, 30 or 22.
  • the invention eliminates the use of pliers or grippers for the purpose of advancing the board. This also eliminates the selective introduction of the feed force at the rear end, that is to say that edge section of the board which faces away from the tool. Instead, the force is applied to the board in a substantially flat manner, such as in the form of a line, tape or strip, in order to drive it indexed into the tool area (claim 5).
  • endless systems used for this purpose are circumferential drive belts, the surfaces of which are arranged next to one another on a length section in a plane and thus enable an almost full-area drive, even though they themselves support the table to be conveyed in strips (claim 8).
  • a substantially continuous conveyance, without the punching device carrying out strokes during a regular punching cycle, is achieved by two sheet feeds arranged one above the other, each of which exerts a substantially flat holding function on the surface of the sheet.
  • One board becomes hanging, the other board is fed to the tool area.
  • a transverse gap arising between the successively conveyed sheets is so small in the longitudinal direction that from an alternating and seen from the tool practically continuous supply of the individual sheets can be spoken (claim 1).
  • Magnetic surfaces of the tapes can be used to apply holding force to the panels (claim 10).
  • Alternatives to applying the force are to use negative pressure if the surfaces of the strips of the panel feeds have openings with which a tensile force (as a holding force) can be applied to the panels.
  • the advantages of the invention lie in a possible increased speed and an increased safety.
  • Safety is increased because the tongs attacking at the back are removed.
  • the speed can be increased without the sheet deforming from its flat position, which is difficult to achieve with a gripping thrust attacking at the rear and increased speed.
  • times can be reduced and the risks associated with synchronizations avoided in order to synchronize the table with the grippers at the start of the feed.
  • the "benefit" from a table can be increased further, because in the place of the earlier intervention of grippers, no strip area has to be left unprocessed.
  • the yield (benefit) can be increased and more freedom is gained in the design of the tool that works the board.
  • the safety and lower susceptibility to faults is also improved in that a stationary support table, which supports the table when the grippers are advanced according to the prior art, is no longer necessary and thus bumps, residual sheet metal particles or irregularities on the surface of this conveyor table are eliminated.
  • the conveyor table moves according to the invention is formed by a multiplicity of individual endless systems, each of which independently applies holding or supporting force to the table over its surface on a longitudinal section of its longitudinal extent. After the band-shaped endless systems have an upper run and a lower run, the surface on the lower run, which is not in engagement with the panel, can be cleaned.
  • a further table feed can also be provided in the outlet of the tool area (claim 17, 20). It is the second table feed when only one feed table feed is used; if, on the other hand, two table feeds are used one above the other, it is the third table feed.
  • This feed arranged behind the tool in the direction of flow y works in synchronism with the feed device arranged in front of the tool. This synchronous movement concerns the indexing movements which take place in the y and x directions (main direction y), so that the sheet is guided through the tool in front of and behind the tool in the course of its continuous movement. In front of the tool by holding the plate, behind the tool by taking over the remaining grid, for example, after blanks have been punched out by the punching device.
  • the feed is thus composed of a thrust and a pulling force in a throughput plane, which consists of the infeed plane, the outflow plane and the work surface of the tool device.
  • the sheet can be processed by the provision of the conveyor on the outlet side up to the end of the rear edge, so it no longer requires a strip-like residual web to which the grippers previously applied their holding force in the prior art.
  • both the inlet side and the outlet side can be provided with a non-straight edge, which results from a mutual alignment of the blanks by displacing the center points in order to allow maximum utilization of the sheet metal.
  • this feed method of the plates with the trapezoidal edge at the front and rear end of the plate, based on the conveying direction y can also shorten the sideways movement when indexing the plate gradually during the feed.
  • a shortened sideways movement has the consequence that the processing takes place faster and more processing devices, in particular more punching or pressing punches, can be accommodated on a given width.
  • Working strokes carried out by the feed are thereby zigzag-shaped, without any lateral lateral movements alone, rather combined by an x and y movement in the feed or lateral direction in order to move to the next position for processing in a controlled manner.
  • FIG. 1 is a plan view of a first example of a feed device for a plate-shaped board 1 that is to be processed, with an inlet feed 10, 11 and an outlet feed 20. They are a working area W, which is assumed below as the punching device 50 should be adjacent.
  • Figure 2 is a plan view of the working device W to explain its function and with the upper feed device 10 removed at the inlet, so that only the lower feed device 11 at the inlet with the metal sheet 1 placed thereon and the conveyor 20 at the outlet can be seen.
  • FIG. 3 illustrates the end of the inlet
  • Feed device with the upper feed 10 and the lower feed 11.
  • FIG. 4 is a side view of the inlet feed device, the conveying plane or inlet plane 100 being identified.
  • Figure 5 is a front view of the feed device at the outlet, also outlet
  • FIG. 6 is a side view of the discharge conveyor 20, with its front end defining the discharge plane 100, which is a continuation of the inlet plane of FIG. 4 and corresponds to the surface of a processing plate 52 of the working device, as shown in FIG. 2.
  • Figure 7 is a section of a conveyor belt, in the example 10a, and its inner structure.
  • Figure 7a is a section perpendicular to that section of Figure 7, with a lateral guide of the conveyor belt of Figure 7 is shown.
  • Figure 8 is a schematic representation of a panel 1, as shown by the
  • Feed device is conveyed towards the punching device, with circular blanks R drawn or printed, which are to be punched out by the punching device 50.
  • the first exemplary embodiment according to FIG. 1 shows a compilation of components used.
  • a feed device 10 above and a not visible similar feed device 11 below are equipped with a plurality of parallel endless belts, in the example ten belts 10a to 10k arranged next to one another.
  • the middle band 10e is symbolically picked out.
  • This conveying device is aligned with a working area W, which in the example is formed with a punching device 50 which extends transversely.
  • Downstream of the tool is 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.
  • ten conveyor belts are located next to each other as endless systems, labeled 20a to 20k.
  • the conveyor belt 20e can be seen symbolically as a longitudinal continuation of the infeed conveyor belt 10e.
  • the infeed conveyors 10, 11 as the first table feeds and the outfeed conveyor 20 as the further board feed are arranged with respect to the tool 50 in its infeed area or outfeed area.
  • the conveying direction y is the longitudinal direction.
  • a number of work punches extend in the tool 50, as can be seen in FIG. 2.
  • the main conveying direction is y as the feed direction or the longitudinal direction.
  • the endless belt systems 10a to 10k, 11a to 11k and 20a to 20k are arranged adjacent in FIG. 1 and the actuating stroke takes place, which is used for positioning.
  • FIG. 1 also shows the infeed area of the infeed sheet transport 10, 11 with two sheet stacks L1 and L2, which are arranged on both sides of an alignment station A with an H-shaped alignment and support device.
  • metal sheets are first stacked from one side and placed on alignment station A (from the side).
  • An alignment process then takes place, which aligns the sheet metal sheet which has just been fed in such a way that it is correctly aligned at the work station W after being fed to the feed device 10, 11 relative to the tool 50. If 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 the metal sheets are now stacked and supplied to the side of the alignment station A, coming from the right.
  • the switch plate 9 is pivotable about an axis in order to influence the height or height of the aligned sheets coming from the alignment station.
  • the switch plate 9 can be pivoted by a small angle, which pivoting movement is synchronized with the feed of the current plate from the alignment station into the sheet 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 fed panel upwards when it is pivoted upwards; If the switch plate is in its rest position or is slightly inclined downwards, the plate is fed from the alignment station to the lower plate transport system 11 without a change in height.
  • FIG. 1 The overview sketch of FIG. 1 is intended to clarify which components come to lie at which point with reference to the tool device 50 in the working area W.
  • the function is to be described in FIG. 2, in which the upper table transport system with its circulating belts 10a to 10k is omitted for the sake of clarity and a table 1 is placed on the lower endless conveyor system 11 with its parallel belts 11a to 11k.
  • the sheet stacks L1 and L2 as well as the alignment station A are omitted here and the tool 50 is shown in a schematic view in such a way that its internal punching dies 50a to 50e can be seen.
  • a discharge system 29 Downstream of the punching dies 50a to 50e of the punching device 50 is a discharge system 29 which conveys the punched round blanks out of the sheet in the transverse direction q along a path 30.
  • the several round blanks that are punched out at the same time are moved in short blow-out channels using pulsed compressed air from the position of the punch in the main conveying direction y, and at the end of the short y-channel pieces 31a to 31e with a magnetic cross conveyor belt 33 conveyed out together on a transverse support device 32 in said transverse direction q, which runs parallel to the x direction.
  • a view into the channel segments 31a to 31e can be seen in FIG. 5. They are an extension of the punch 50a aligned in the y direction.
  • the discharge system can be omitted, for example if the work station is only used to print on the surface of the board, i.e. the blanks are still physically connected to the board.
  • the circulating belts 11a to 11k are driven synchronously.
  • a drive device 18 is used, which can be seen flanged on the side and applies a torque to a shaft 18w which, with deflection rollers, generates a rearward deflection and the drive of the endless belts.
  • the table 1 "is stopped in the" wait "position, detected by at least one sensor 28. In this holding position, the table waits until a table that has been conveyed and processed by the tool in front of it has been completely conveyed to the tool by the feed device located above it is to be subsequently moved seamlessly, that is to say without an idle stroke of the upward and downward moving punches 50a to 50e into the shown first punching position of the plate 1, identified by V. From this point on the plate moves forward and is indexed both in y - As well as in the x-direction so that all of the given blanks, as shown in FIG are shown as an example on a blackboard, from which five stamps have been punched out.
  • the plate is moved over a processing table 52, the level of which essentially corresponds to that level 100 which is formed by the surfaces of the conveyor belts on which the board 1 comes to rest in the retracted position and in the first punching position.
  • the indexing movement is initiated by a laterally arranged drive 17 and controlled precisely by a control (not shown), y forms the main feed direction in FIG. 2 from left to right, which is taken over by the movement of the belts 11 and these belts are also controlled controlled in such a way that the respective position of the round blanks under the stamps is reached precisely.
  • the feed movement in both the x and y directions is switched off and the punch is engaged.
  • a new indexing movement composed of a combination of an x and a y step, begins to control the next position.
  • the indexing movement in the x direction is caused such that the entire feed device is displaced in the x direction, which affects all belts 11a to 11k simultaneously and synchronously.
  • the movements in the y-direction is also synchronous and designed at the same time, controlled by the motor drive 18, which via a slip-free drive belt 18a sets a drive roller in a controlled rotation, which has a slide 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 can be designed, for example, as a grooved shaft or as a polygon in a pinion to be axially displaceable in order to reduce the weight that has to be moved in the x direction with the feed. Only the shaft 18w is moved, but the motor 18 and the associated drive belt 18a are not.
  • the outlet in FIG. 2 shows a plurality of parallel endless systems 20a to 20k of the panel feed device 20, their longitudinal movement in the y direction also being carried out by a laterally flanged drive 26 with a belt transmission 26a and a pinion 26b on a shaft 26w, which is carried out on the shaft 26w End of the second sheet feed device 20 facing away from the punching device is arranged.
  • An indexing movement is also possible here, which is carried out by a drive 27 in the same way as the indexing movement of the table feed 11 on the inlet side on the outlet side.
  • the outlet side is also to be understood as a kind of feed, with an effect on the panel section that is still on the inlet side. From the full-surface panel on the inlet side, however, only the remaining skeleton remains on the outlet side after punching out, but this represents a physical connection and is therefore able to transmit forces. If a different processing device is selected on the work area W instead of the punching device, the plate can still be completely present, e.g. if printing or surface coating is only carried out that does not change the mechanical consistency of the overall panel.
  • the side view shows schematically the belonging together of the work table 52 of the punching device in the work area W, with an infeed conveyor belt 11 with parallel endless systems and an outfeed conveyor system 20 with likewise several parallel endless systems is shown.
  • these endless systems closely adjoin the worktop 52, which can be slightly bevelled to accommodate the schematically drawn table 1 during the feed movement when the endless conveyor system 11 at the inlet conveys it in the y-direction.
  • All three components 11, 52, 20 also indicate the conveying plane 100, which essentially corresponds to the surface of the belts, but can also lie in the plane of a sheet metal sheet 1 that is being conveyed, or can be formed from the surface of the table 52 ,
  • the revolving conveyor belt 10a is shown here in detail and in section.
  • a belt base 62 is reduced in thickness compared to that of a conventional conveyor belt and is provided with teeth 61 on the inward-facing side, which are provided at an essentially equal distance in the longitudinal direction y.
  • a corresponding toothed roller or roller engages between these teeth from the drive shaft, so that several adjacent conveyor belts have no slippage relative to one another.
  • a magnetic layer 63 is applied, which in the example shown is a film which is attached to the outer surface of the belt base 62 by an adhesive layer 64 and which is filled with magnetic particles or entirely as 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 maintain the elasticity and resilience of the strip, but at the same time, essentially over the surface, to offer the possibility of metallic sheets by magnetic adhesive force in to keep the z direction and to control it in the y direction.
  • exemplary embodiments of a conveyor belt for applying adhesive force in the z direction are those which are provided with flow or nozzle openings in order to apply a force by means of negative pressure.
  • the revolving belts according to FIG. 7 are illustrated again in a section in the x direction in FIG. 7a.
  • the magnetic layer 63 is provided, which in the y direction (perpendicular from the plane of the paper) is used for advancing purposes in FIG schematically drawn table 1 is moved.
  • a lateral guide 65a, 65b is provided for the band base 62, which is in the regions 62a and 62b from the lateral guides is held in the z direction.
  • the guides are designed as U-shaped rails or profiles, which protrude more inward in the x-direction below the belt than above.
  • the thickness of the rail is essentially matched to the thickness of the magnetic layer 63, so that an essentially uniform surface is created over the entire transverse direction b 10 of the band and the lateral guide. If the magnetic layer 63 protrudes slightly in height with respect to the guides, and is therefore raised with respect to them, the friction of the sheet on the lateral longitudinal guides 65a, 65b is reduced.
  • the toothed sections 61 are also gripped by the lateral U-shaped guides 65a, 65b.
  • the belts are exposed without lateral guidance.
  • the band back 62 is significantly reduced compared to conventional band backs of toothed belts, the height of the teeth 61 is greater than the thickness of the band back.
  • another design of the belt towards the inside can also be selected if an essentially slip-free transmission of the movement of the drive shafts 18w or 26w is made possible. It should be taken into account that the drive shaft 18w exerts a pushing movement on the belts 11a to 11k, that is to say it is further away from the work area W than a deflection shaft 18v which is arranged close to the work table 52.
  • FIG. 1 and in the functional representation of FIG. 2 can be used in the case of the punching device 50 for the production of round blanks R with which metal closures for glasses for wide-neck bottles can be produced.
  • the blanks can be shaped by means of a deep-drawing process, so that they have a circumferential skirt edge, which are later provided with a sealant and with locking cams to serve as a bottle stopper.
  • Round shapes can be assumed here if the closures are to be applied by a rotary movement, but other rounded shapes can also be used which are not rectangular or square. Due to its shape, the occupancy or filling of the table is a decisive factor for the amount of "benefit" in the sense of the maximum possible use of disk surfaces, based on the table area.
  • the table shown in FIG. 8 shows a large number of closely adjacent blanks, with a specific orientation of the blanks relative to one another depending on the viewing direction.
  • a movement y 'of the board from right to left for the prior art and from top to direction y for use in the board feed of Figure 1 is assumed.
  • the board On the upper and lower side, the board has a wave-like design, which can be trapezoidal or rounded (so-called "scroll edge").
  • the front edge 1v and rear edge 1r form the leading edge and the rear end edge, respectively, which last runs through the processing device W.
  • the side edges 1d and 1 e are smooth and straight.
  • the first row R1 is the one that first enters the tool device 50 at the work station W, as shown in FIG. 2.
  • the columns of circular blanks oriented in the y direction are each offset by half a distance from the center of the adjacent row, so that the roundings of the circular blanks can lie close together.
  • a first row R1 of round blanks is formed on the front edge 1 v, which are not closely adjacent to one another, but have a clear distance in the x direction, which is denoted by c in the first and second rows R1, R2. This distance is greater than the distance that two grid lines running in the x direction have from one another in the y direction.
  • These comparison grid lines result by connecting the centers M of the first and third rows of the blanks in the x direction.
  • the sheet with its scrolled (serrated or wavy or not straight) front end 1v is now moved into the processing device 50, all the round blanks of the row R1 in front are machined into a working stroke of the press 50 which moves the stamping dies. Due to the larger distance c, the punches can be arranged so that no pure transverse thrust in the x direction is required to complete machining of the first row and an indexing movement to the next row R2 can be shorter and faster than if it were first in the first Row R1 would have to have a side movement in order to process any more closely adjacent blanks that are still there in a second working stroke.
  • FIG. 8 is rotated through 90 ° and the edge 1d is regarded as the edge that enters the tool device 50 in the y ′ direction (corresponding to the x direction of the example of the invention) ) arrives.
  • the blanks of the first row (parallel to edge 1d) are so close together that the punches of the tool, which require a greater distance, can only process every second round.
  • a pure lateral movement is required to punch out the second round blanks that could not be machined during the first working stroke.
  • the right-hand strip with the width b can then be reduced to such a degree during a feed movement in the y direction (FIG. 8 in the original orientation) it can also be seen on the left edge 1d.
  • a sheet metal strip of sheet material is saved which is not converted into benefits (round blanks formed).
  • the disk density is otherwise unchanged from the prior art, that is to say the “benefit” has been increased solely by reducing the strip area b, and the speed is increased by eliminating an x-indexing movement in the first row R1 and due to the greater spacing of the centers in each row Rn of blanks, more blanks can be processed, in particular punched out, than area pieces in one working stroke than if the blanks are located closer together.
  • the circular blanks serve as an example and do not necessarily have to be circular, it is also possible to speak of surface pieces which are to be arranged on the panel in order to be able to take maximum use of usable space from the panel, with the least possible remaining web portion, which is determined in its width by the closest adjoining edge areas of the surface pieces and by the properties of the processing tool, for example the punching device, which requires a predetermined minimal residual web in order to be able to carry out the cut cleanly.
  • the distance c from the center in a first round row measured in the x direction is compared with the distance of the third grid line running in the x direction, this means the next but one grid line.
  • a denser network line geometry results in the y direction than in the x direction. The new feed takes advantage of this and uses the larger distances between the centers in the x direction in order to have these round blanks machined in this front at the same time by the tool device 50.
  • FIG. 1 in FIGS. 3 to 6 are to be described in more detail in their structure.
  • a gap 12 is formed between an upper plate feed 10 and a lower plate feed 11, which is designated in Figure 4.
  • This gap is higher or stronger than the thickness of a sheet 1, as explained in FIG. 8 and located in FIG. 2 in the entry area on the lower sheet feed 11.
  • a wedge-shaped belt guide of the upper feed belts and the lower feed belts 11 can be seen in the side view of FIG. It is elongated and aligned to the tool area W, which is represented by the inlet plane 100, which comes to rest in the gap 12.
  • the two conveyor belt sections of the endless conveyor belts lying opposite one another in the gap 12 are equipped with the magnetic surface, as explained in FIG.
  • the upper feed 10 can be lifted with a lifting device 19 from two spaced lifting cylinders 19a, 19b, relative to the lower table feed 11.
  • Both table feeds 10 and 11 can be moved in their entirety in a controlled manner in the x direction, which is achieved by drive 15 for the upper table feed and drive 17 for the lower table feed 11, which move a frame geometry via a spindle drive 15a and 17a, respectively, which the carries the respective endless belt table conveyor and can be moved relative to a main frame.
  • a table fed first on, for example, the lower table feed 11 leads to the fact that the upper table feed 10 with its conveyor belts is free to pick up a next table and to hold it in the waiting position.
  • the conveyor belts are designed to apply z-forces (eg magnetically)
  • the second board can also hang on the underside of the upper conveyor belt 10 in the waiting position until the lower board of the lower board feed 11 has been processed by the tool.
  • the upper table feed then conveys and positions for processing in the The tool and the lower table feed 11 picks up the next table and holds it in the waiting position.
  • the takeover of a respective table for the upper or lower feed controls the switch 9 by changing its position.
  • a rail system is provided with which both table feeds can be moved in and out.
  • the retraction and extension relates to the movement of a main supporting frame on tracks or rails, in the direction of the tool area W towards and away from it. This is shown in FIG. 3 for the table feed at the inlet and FIG. 5 for the table feed at the outlet.
  • the tool provided in the working area is directly accessible from both sides by a possible setting of the inlet from the working area and a likewise possible setting of the outlet from the same working area.
  • tracks or rails 41a are provided on a base 41 and sliders 41 a 'slide on the rails to allow movement of the supporting frame 41b, on which the entire arrangement rests, with respect to the rails 41a and with respect to the working area W.
  • the base 41 is the same foundation on which rails 44a rest, which slide pieces 44a 'guide on the underside of a main supporting frame 44b, 45.
  • a stop can be provided at the inner end of the rails 44a, for the supporting frame 44b to stop at its end position closest to the working area W.
  • the movement in the x direction is realized constructively by a displaceable frame construction guided in this direction compared to a non-displaceable frame construction 41c above the lower frame 41b.
  • the upper part 42 of the intermediate frame 41c can be swung open relative to the lower part via a joint 42a and the lifting cylinders 19 for maintenance purposes.
  • the displaceable frame construction is a system of transverse struts and guides for the upper drive device 15, as well as for the drive system 17 lying below.
  • the overhead guide system for the belt drive 10 is to be described, with a direct transferability to the lower drive system 17, whereby the indices are each transferable, for example the upper element 15a corresponds to the lower element 17a, etc.
  • the upper spindle drive 15a translates its movement into struts 15f lying in the x direction, two of which are provided which have a width in the transverse direction that spanned at least some of the conveyor belts. Perpendicular to this there are further struts 15d arranged at regular intervals, each arranged between two bands and outside the edge of the outermost band. These longitudinal struts 15d are supported by sliding pieces 15c on support frames 15b, on which they can slide, caused by the movements transmitted to the belt system 10 by the drive device 15 via the spindle drive 15a and the cross struts 15f. During these movements, the longitudinal drive 16 is not moved, rather the shaft 16w moves in an axial direction in pinions or drive rollers which are axially immovable. They are driven by the drive 16 with a belt drive 16a.
  • FIGS. 5 and 6 The conveying device in the outlet area of the tool is explained constructively in FIGS. 5 and 6.
  • the view seen from the tool side is shown in FIG. 5.
  • a frame 44b, 45 carries the table which can be moved in the x-direction from a plurality of adjacent belt conveyors 20a to 20k.
  • a shaft 26w is provided which, together with a controlled drive 26 and a belt 26a, can be set in a controlled rotational movement in order to carry out a y movement step by step. This rotary movement is synchronized with the rotary movement of the table feed 10 or 11 which is currently conveying the board to the tool in the infeed region of the tool, there the drive 16 or 18.
  • the table feed 20 also has z-forces, e.g. magnetic surfaces on the individual endless belts 20a to 20k and can therefore also apply forces in the z direction to a metal plate, in particular.
  • z-forces e.g. magnetic surfaces on the individual endless belts 20a to 20k and can therefore also apply forces in the z direction to a metal plate, in particular.
  • 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 also 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 reference to the drive elements 15. Here, these drive elements are correspondingly called 27 with the same indices, with reference to the controlled motor 27.
  • 27f are the cross struts with which the spindle drive 27a transmits the indexing movement to the endless belts 20.
  • longitudinal struts 27b are provided, which are arranged between or outside the endless belts and slide on sliders 27c, which are arranged on support rails 27b.
  • the support rails 27c are opposite Frame 45 is immovable, which itself can be moved on the longitudinal rails 44a for better access to the tool area, but not during the operation of the feed.
  • a flat discharge system 29 is provided, which has a gap with it forms the top of the conveyor belts 20a to 20k and carries the blow-out channels 31a to 31e.
  • the tape 33 runs perpendicular to this, which is held by the support device 32 and which can also be magnetic in order to receive the punched-out round blanks upwards and to request them laterally in the transverse direction q, as shown in FIGS. 2 and 1.
  • a table conveyed into the tool area is grasped by the table conveyor 20 in the outfeed, held and synchronized with the movement of the infeed conveyor belts 10 or 11 even before the last operation on the last row, which is close to the rear edge 1r of FIG , depending on which one is feeding the board.
  • the outfeed conveyor can take over the task of the infeed conveyor even before the last stroke for the last punching process is carried out. The remaining lattice after punching is mechanically strong enough to absorb tensile forces for conveying out.
  • sensors 28 (28a above, 28b below) can be seen from FIGS. 1 to 3, which are arranged on the infeed table feed 10 or 11 in such a way that the position 1 "of FIG. 2 with respect to table 1 is reliably recognized
  • An inductive proximity sensor which is arranged below the plane formed by the surfaces of the strips, has proven to be advantageous for this. Its distance in the y-direction from the tool is determined by the starting position of the plate. Sensor 28 detects the presence of a plate, switches off the drive 16 or 18, which generates the feed movement in the y-direction for the feed 10 or 11 concerned in each case.
  • the waiting position can be started immediately, with only a small gap between the rear edge 1 r of the previous panel and the front edge 1v of the new panel remains in order to process the next in a practically continuous process the first table in the tool area before the next one Stamp stroke triggers the next operation.
  • the feed method thus does not require any empty strokes of the tool device 50 which continues to operate at a constant frequency.
  • the supporting force is applied from the flat side of the plates.
  • the feed force is also applied from the flat side, so that undulations or deformations at higher feed speeds can be reliably avoided.
  • the length of the panel section supported by the infeed table feed changes in favor of an increasing length in the outlet.
  • the support function in the inlet thus changes the contact area on the flat side of the board, based on the total area of the board. It is not a punctual introduction of force that is transmitted at one or two small points, but an essentially flat transmission that is large-scale, but does not need to be full-area.
  • the number of surface pieces R that are processed while only the outlet feed 20 is in engagement is determined.
  • this remaining sheet length can be between the rows of VA and three to four rows.
  • the length of the table feed 20 in the run-out area can be shorter than that in the run-in area, since the entire table never has to be supported in the run-out area, but only a small part of its length.
  • the outfeed feed becomes active before the last punch stroke processes the last row Rn of patches.
  • the conveyor in the outlet is therefore not only an element for tearing out a scrap skeleton from the work area, immediately after the last working stroke, but also a feed device that also works in a controlled manner with the infeed table conveyor, only in the exit area of the tool.

Landscapes

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

Abstract

L'invention concerne un dispositif d'amenage destiné à des plaques de type feuilles en tôle et servant à déplacer plusieurs feuilles (1,1') à l'intérieur ou à travers une zone de travail (W ; 50) dans laquelle les feuilles sont usinées. Le dispositif d'amenage selon l'invention comprend un premier et un deuxième avanceur de feuilles (10, 11 ; 20) qui amènent les feuilles de manière contrôlée à la zone de travail (W) afin que les feuilles y soient usinées avec exactitude de position. Le premier avanceur de feuilles (10, 11) se trouve sur un côté d'entrée de la zone d'outil et le deuxième avanceur de feuilles (20) se trouve sur un côté de sortie de la zone d'outil. Les deux avanceurs de feuilles (10, 20 ; 11, 20) sont synchronisés entre eux dans leurs mouvements (x, y) lors d'un avancement de la feuille (1), la feuille entraînée par le mouvement synchrone étant maintenue par les deux avanceurs de feuilles. Les avantages découlant de l'invention résident dans l'augmentation possible de la vitesse et dans la sécurité obtenue. Il est possible d'augmenter la vitesse sans que la feuille ne se déforme et perde sa planéité.
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

Publications (2)

Publication Number Publication Date
EP1439922A2 true EP1439922A2 (fr) 2004-07-28
EP1439922B1 EP1439922B1 (fr) 2007-09-19

Family

ID=7704180

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02802271A Expired - Lifetime EP1439922B1 (fr) 2001-10-30 2002-10-28 Transport de feuilles a haute vitesse sans pinces de prehension

Country Status (11)

Country Link
US (1) US7237421B2 (fr)
EP (1) EP1439922B1 (fr)
CN (2) CN1582207A (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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CN114082861A (zh) * 2021-11-17 2022-02-25 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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DE102006014454B3 (de) * 2006-03-29 2007-11-08 Hoffmann, Frank Stanzvorrichtung mit Zuführeinrichtung
DE102007012814B3 (de) * 2007-03-16 2008-08-28 Grenzebach Maschinenbau Gmbh Vorrichtung zum automatischen Sortieren von Glasplatten
EP2050523B1 (fr) * 2007-10-20 2009-11-04 Trumpf Sachsen GmbH Agencement mécanique pour le traitement de tôle à l'aide d'un dispositif de traitement de tôle ainsi que dispositif de transport
US9358603B2 (en) * 2009-11-06 2016-06-07 Hidaka Seiki Kabushiki Kaisha Feeding apparatus for metal strips and manufacturing apparatus for heat exchanger fins
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

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Also Published As

Publication number Publication date
ES2294201T3 (es) 2008-04-01
CN1907592A (zh) 2007-02-07
US7237421B2 (en) 2007-07-03
EA200400609A1 (ru) 2004-08-26
US20050020423A1 (en) 2005-01-27
EA005483B1 (ru) 2005-02-24
EP1439922B1 (fr) 2007-09-19
HUP0401961A2 (hu) 2005-01-28
DE50210937D1 (de) 2007-10-31
ATE373531T1 (de) 2007-10-15
CN1582207A (zh) 2005-02-16
PL368406A1 (en) 2005-03-21
PL204386B1 (pl) 2010-01-29
AU2002363160A1 (en) 2003-05-12
DE10294963D2 (de) 2004-09-09
WO2003037543A2 (fr) 2003-05-08
WO2003037543A3 (fr) 2003-09-18

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