EP0990473B1 - Apparatus for making plate heat exchangers from prefabricated heat transfer sheets - Google Patents

Apparatus for making plate heat exchangers from prefabricated heat transfer sheets Download PDF

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Publication number
EP0990473B1
EP0990473B1 EP99118505A EP99118505A EP0990473B1 EP 0990473 B1 EP0990473 B1 EP 0990473B1 EP 99118505 A EP99118505 A EP 99118505A EP 99118505 A EP99118505 A EP 99118505A EP 0990473 B1 EP0990473 B1 EP 0990473B1
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EP
European Patent Office
Prior art keywords
heat exchanger
edges
folding
exchanger plates
hold
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
EP99118505A
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German (de)
French (fr)
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EP0990473A2 (en
EP0990473A3 (en
Inventor
Hans Klingenburg
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Klingenburg GmbH
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Klingenburg GmbH
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Filing date
Publication date
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Publication of EP0990473A2 publication Critical patent/EP0990473A2/en
Publication of EP0990473A3 publication Critical patent/EP0990473A3/en
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Publication of EP0990473B1 publication Critical patent/EP0990473B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00Making other particular articles
    • B21D53/02Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/04Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/021Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors

Definitions

  • the invention relates to a device for production of plate heat exchangers from prefabricated heat exchanger plates with an assembly station on which a folding device is arranged by means of each heat exchanger plate on two opposite edges with the corresponding Edges of the heat exchanger plate arranged below it and on the other two opposite edges with the corresponding edges of those arranged above it Heat exchanger plate is foldable, and with a transport device, by means of the prefabricated heat exchanger plates can be fed to the assembly station (see e.g. US-A-5 226 234).
  • the invention has for its object the above Generic device for the production of Plate heat exchangers made from prefabricated heat exchanger plates to develop such that in the intimate connection of Edges of heat exchanger plates arranged one below the other these edges in the vertical direction over their entire horizontal Extent arranged exactly above or below one another are.
  • the Device has two recording stations that are in contact with each other opposite sides of the assembly station are arranged, in which the square and the same prefabricated Heat exchanger plates can be stacked rotated by 90 degrees to each other are and from which the heat exchanger plates by means the transport device can be removed individually.
  • the orientation in the stack of the first recording station exactly 90 degrees to the Orientation in the stack of the second recording station twisted is.
  • the individual heat exchanger plates are merely a device picked up from their respective stacks and then - without any twisting - conveyed straight to the assembly station. This ensures that the edges of one another arranged heat exchanger plates exactly to each other are aligned.
  • the folding process can therefore always be done perform evenly with constant quality, which results from a high tightness of the plate heat exchanger and thus a compared to the prior art increased efficiency of the same results. This happens in the case of the invention Device in that the correctly pre-positioned heat exchanger plates during and immediately before the manufacturing process of the heat exchanger no longer rotated, but only be moved in a straight line.
  • a largely continuous operation of the assembly station the device according to the invention can be achieved if according to an advantageous embodiment of the invention Device whose transport device has two transport units has, at the same time one between the first Receiving station and the assembly station and the other between the assembly station and the second receiving station is movable and vice versa.
  • the next heat exchanger plate be included.
  • the invention Device for the production of plate heat exchangers everyone works from prefabricated heat exchanger plates Folding unit of the four folding units comprising folding unit with two folding angle ranges, namely a first Folding angle range, at which the associated edges of the both heat exchanger plates bent at least 90 degrees and a second folding angle range, in which the already edges of the heat exchanger plates bent by 90 degrees can be bent to a total of 180 degrees.
  • the first fold angle range is advantageously about 135 degrees and the second Fold angle range about 45 degrees.
  • Hold-down device provided during the folding process is arranged on the transport device, there is better insight into the same, being above In addition, compared to the prior art, improved control options available. In addition, due to the Attachment of the hold-down device to the transport device ensures that the hold-down device in in any case in the correct vertical position with respect to the two heat exchanger plates is located, the edges of which are together should be folded. This also results a qualitatively superior folding process that corresponds to the corresponding Improvements in the tightness of the ultimately manufactured plate heat exchanger leads.
  • a constructive and technically inexpensive and functional Design of the folding device is achieved when each Folding unit has a folding link, the folding surfaces of which contact surface with the bottom of the bottom of the two together edges of the two heat exchanger plates to be folded bringable and that while maintaining the surface contact between its folded surface and the bottom of the lower of the two edges of the two heat exchanger plates to be folded together is rotatable by 180 degrees.
  • Folding units are those when the folding process is carried out occurring noises compared to conventional, folding devices working with hammers comparatively quiet.
  • compared to the mentioned conventional folding devices a significantly reduced Wear.
  • Each folding unit advantageously has a drive pinion, by means of its rotation, the folding member of the folding unit can be rotated and which in turn by means of a driven tooth part is rotatable.
  • the vertical positioning of the folding units the folder can be done while the next Heat exchanger plate is supplied to the assembly station.
  • each member's folding link Folding unit is the folding surface of each member's folding link Folding unit as an inclined surface, preferably at an angle of 45 degrees educated.
  • the hold-down device of the invention advantageously Two hold-down devices per transport unit on, of which the hold-down device of a transport unit two opposite edges of the heat exchanger plates and the hold-down of the other transport unit other two opposite edges of the heat exchanger plates assigned. This makes it, for example possible, the hold-down device already during the transport process position the heat exchanger plate so that during the folding process on the heat exchanger plate can withstand forces exerted by the folding unit.
  • Each hold-down device expediently has a hold-down member, whose holding surface in surface contact with the Edge bordering the top of the top of the two heat exchanger plates to be folded at their edges is.
  • the holding surface of the hold-down member each hold-down with the edge of the heat exchanger plate facing edge defines the crease line around the two edges of the Heat exchanger plates are bent or kinked.
  • the folding angle range and the second folding angle range advantageous if those of the forming the kink line Edge of the holding surface upwardly extending end face of the hold-down member of each hold-down as, to preferably 45 degrees, inclined inclined surface against which the Top of the top of the two to be folded together Edges of the heat exchanger plates at the end of the first folding angle range gets in plant.
  • the hold-down member each Hold down between his active position, in which his Holding surface in surface contact with the one adjacent to the edge Area the top of the top of the two at their edges is to be folded heat exchanger plates, and its rest position is adjustable in the outside of the room between the top of the top of the two together interlocking edges of the two heat exchanger plates and the bordering area of the top of the top of the two heat exchanger plates to be folded at their edges is arranged.
  • each folding unit of the Folding device and each hold-down device of the hold-down device deliverable from an outside position to an inside position is closer to the center of the heat exchanger plate is.
  • each recording station has an edging device by means of which the edges the one in the receiving station from the transport device recorded heat exchanger plates are deformable.
  • the procedure is the 180 degree interlocking of the Edges of the heat exchanger plates in a first folding step the edges of the heat exchanger plates in a first folding step, which extends over a first folding angle range of at least 90 degrees, preferably 150 degrees, and split a second folding step, which is over a second folding angle range of max. 90 degrees, preferably from 45 degrees.
  • a region adjacent to the edge is expediently the top of the top of the two to be folded at their edges Heat exchanger plates during the first folding step held down. During the second folding step such a hold-down is not necessary because the Execution of the interlocking forces no longer increases can lead to evasion of the two heat exchanger plates.
  • edges of the prefabricated heat exchanger plates are expediently pre-bent before it goes to the assembly station or the interlocking.
  • FIG Device By means of an inventive device shown in principle in FIG Device for the production of plate heat exchangers from prefabricated heat exchanger plates 1 the prefabricated Heat exchanger plates 1 processed into plate packs, the heat exchanger plates 1 on two opposite one another Edges 2, 3 with the corresponding edges 2, 3 of the heat exchanger plate 1 and arranged below them the other two opposite edges 4, 5 with the corresponding edges 4, 5 of those arranged above them Heat exchanger plate 1 are connected or rebated.
  • the heat exchanger plates 1 have projections in a vertical direction Direction up and form flow channels between them those media that pass through the heat exchanger, whereby on a flow channel for the one medium in vertical Direction one flow channel for the other medium follows.
  • the heat exchanger plates 1 are identical to one another or prefabricated.
  • To the device according to the invention for the production of Plate heat exchangers from the prefabricated heat exchanger plates 1 include an assembly station 6 at which the heat exchanger plates 1 can be assembled into plate packs, and two receiving stations 7, 8, on which the prefabricated heat exchanger plates 1 held in a stack 9, 10 become.
  • the stack 9 of the first receiving station 7 are the Heat exchanger plates 1 rotated 90 degrees to those in stack 10 the second receiving station 8 held heat exchanger plates 1 arranged.
  • the heat exchanger plates 1 alternating in the arrangement according to Stack 9 of the first receiving station or the stack 10 of the second receiving station processed to plate heat exchangers.
  • a rotation of the heat exchanger plates 1 during their transportation from the first receiving station 7 or from the second receiving station 8 to the assembly station 6 is accordingly not required.
  • a transport device belongs to the device according to the invention 11, by means of which the heat exchanger plates 1 of the Recording stations 7, 8 can be transported to the assembly station 6 are.
  • the transport device 11 has two transport units 12, 13 on, of which the first transport unit 12 the heat exchanger plates 1 from the one on the left in FIG first receiving station 7 to the assembly station 6 and the second Transport unit 13, the heat exchanger plates 1 of the one in FIG 1 right second receiving station 8 to assembly station 6 transported.
  • the two transport units 12, 13 of the Transport device 11 are interconnected so that whenever a transport unit 12, 13 on its assigned Recording station 7, 8 is located, the other Transport unit 13, 12 is located in the assembly station 6. While the one transport unit 12, 13 from the Recording station 7, 8 moves to the assembly station 6, moves then the other transport unit 13, 12 from the assembly station to the receiving station 8, 7.
  • the heat exchanger plates 1 are from the respective transport unit 12, 13 in exactly the same position to the assembly station 6 pass in which they are from the respective receiving station 7, 8 have been taken over. One rotation of the transport units 12, 13 and the heat exchanger plates attached to them 1 is not required. When they are shipped from the receiving stations 7, 8, the heat exchanger plates 1 only conveyed in a straight direction, none at all Rotation of the heat exchanger plates 1 is required.
  • Each transport unit 12, 13 has one with several suction points 14 equipped suction device, by its negative pressure a heat exchanger plate 1 on the transport unit 12, 13 can be fixed. By means of this fixing process the heat exchanger plates 1 from the stacks 9, 10 taken. The transfer of the heat exchanger plates 1 in the Assembly station 6 takes place by switching off the vacuum the suction points 14, whereby the heat exchanger plates 1 in the desired arrangement in the assembly station 6 added become.
  • an edging device 15 is provided, by means of which the edges 2, 3, 4, 5 or edges of the heat exchanger plates 1 are preformable or bendable in the desired manner so that with the desired distance from the previous one Heat exchanger plate 1 can be placed on top of one another in the assembly station 6 are.
  • the from the transport unit 12, 13 at the receiving station 7, 8 absorbed heat exchanger plate 1 is by means of the transport unit 12, 13 of the transport device 11 from the receiving station 7, 8 promoted to the assembly station 6, whereupon the heat exchanger plate 1 on the already in the assembly station 6 stored and processed previous heat exchanger plate 1 is filed.
  • the margins 2, 3, 4, 5 of the just placed Heat exchanger plate 1 lie exactly over the corresponding one Margins 2, 3, 4, 5 of the previously filed and already processed heat exchanger plates 1.
  • the assembly station 6 has a height-adjustable in the vertical direction Folding device consisting of four folding units 16, 17, 18, 19, each of which one of the edges 2, 3, 4, 5 of Heat exchanger plates 1 is assigned.
  • the four folding units 16, 17, 18, 19 are on a frame of the device or the Assembly station 6 attached.
  • Each folding unit 16, 17, 18, 19 has a cylinder 20, from the end of the frame distant one
  • Actuator 21 protrudes, which has a lever 22 with Partially circular tooth part 23 provided with a toothing drives.
  • Lever 22 By moving the actuator 21 in and out Lever 22 pivots, which rotatably with the tooth part 23rd is connected and the tooth part 23 rotates accordingly.
  • the toothing of the tooth part 23 is in engagement with the ring gear a drive pinion 24, which by rotating the Tooth part 23 is rotatable accordingly. Because the diameter of the Pitch circle of the tooth part 23 is larger than the diameter of the drive pinion 24 is that covered by the drive pinion 24 Angle of rotation greater than that of the tooth part 23.
  • the drive pinion 24 is firmly connected to a false link 25.
  • the false link 25 is approximately as long as the edges 2, 3, 4, 5 of a heat exchanger plate 1.
  • the false link 25 has one Folding surface 26 with which the folding member 25 rotates by means of the drive pinion 24 in contact with the underside e.g. of the edge 2 of the lower of the two to be folded together Heat exchanger plates 1 device.
  • the folding member 25 as a folding surface 26 an inclined surface, which is shown in dashed lines in Figure 1 vertical position of the false link 25 with the lower surface the edge 2 of the heat exchanger plate 1 an angle of 45 degrees.
  • position 25a in which its folding or Inclined surface 26 in contact with the lower surface of the edge 2 of the lower of the two heat exchanger plates to be folded together 1 device.
  • the two transport units 12, 13 of the transport device 11 each have a hold-down device.
  • the hold-down device has two hold-downs 27, 28.
  • the hold-down device 27, 28 of the transport unit shown in Figures 2 and 3 12 is the opposite edges 2 and 4 assigned to the heat exchanger plates 1, whereas the two hold-downs of the not shown in Figures 2 to 4 Transport unit 13 the two other opposite one another Edges 3 and 5 of the heat exchanger plates 1 assigned.
  • Each hold-down 27, 28 is by means of an actuating cylinder 29 arranged to be adjustable about an axis 30.
  • Actuating cylinder 29 and Hold-down devices 27 and 28 are by means of suitable fastening elements firmly attached to the transport unit 12. By retracting and extending an actuator 31 of the actuating cylinder 29 the hold-down device 27 is pivoted about the axis 30.
  • the hold-down 27 has a hold-down member 32, the holding surface 33 to hold down the two heat exchanger plates 1, the edges 2 of which are to be folded together, such as results in particular from Figure 4 against that area the surface of the top of the two heat exchanger plates 1 is brought in, which is on the edge 2 of upper heat exchanger plate 1 connects.
  • the edge facing 2 Edge 34 of the holding surface 33 defines the bending axis or the crease line around which the two edges 2 of the two heat exchanger plates 1 are folded.
  • the hold-down member 32 the position described above on the upper heat exchanger plate 1, if by approximation of the Folding surface 26 of the folding member 25 on the lower surface of the edge 2 of the lower of the two heat exchanger plates 1 the actual one Warping process is initiated.
  • the edge 34 adjoining the end face facing the edge 2 35 is also the hold-down member 32 in the form of an inclined surface formed, the end face or inclined surface 35 with the holding surface 33 encloses an angle of 45 degrees and thus the angle between the rebate or inclined surface 26 to Case 25 corresponds.
  • the false link 25 has the one labeled 25a in FIG Position is pivoted out, the heat exchanger plates 1 by the hold-down member 32 of the hold-down device 27 fixed in the vertical direction.
  • the two edges 2 of the two heat exchanger plates 1 are around the edge 34 or through this edge 34 of the holding surface 33 of the hold-down member 32 defined buckling line in Figure 4 opposite bent clockwise.
  • the false link 25 runs here from its position labeled 25a over the position labeled 25b designated position in the position designated 25c.
  • the lever connected to the cylinder 20 via the actuator 21 22 becomes from its position 22a, in which the false link 25 is arranged vertically below the heat exchanger plate 1, about its position 22b, that of position 25a of the false link 25 corresponds to the position pivoted into its position 25c 25c of the false song 25 corresponds.
  • the first folding angle range which is in the illustrated embodiment extends over a rotation angle of 135 degrees, completed.
  • the first folding angle range 36 holding down the two heat exchanger plates 1 by means of of the hold-down 27 required.
  • After reaching the first Folding angle area 36 corresponding folding or bending angle The bending or folding process is stopped by 135 degrees the drive pinion 24 or the false link 25 interrupted.
  • the hold-down member is now 32 of the hold-down device 22 by retracting the actuator 31 in the actuating cylinder 29 clockwise around the Axle 30 pivoted, whereby the hold-down member 32 of the hold-down device 27 into the position designated 32a in FIG device in which the hold-down member 32 outside the gap between the surface of the top of the two Edges 2 and the surface adjoining this edge 2 the upper heat exchanger plate 1 is arranged.
  • Both the hold-down 27 and the folding unit 16, which are assigned to the edge 2 of the heat exchanger plates 1, are towards the center of the heat exchanger plate 1 deliverable.
  • the hold-down devices of the transport unit 13 are correspondingly the edges 3, 5 of the heat exchanger plates which are perpendicular to the edges 2, 4 1 assigned.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Making Paper Articles (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

The device has an assembly station with a folding device by means of which the two pairs of opposite edges of each plate can be folded respectively with the edges of the plates above and below it. The prefabricated plates are conveyed to the assembly station from the pick-up stations where they are stacked, the plates in each stack being oriented at 90 degrees to one another ready for assembly.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Herstellung von Plattenwärmetauschern aus vorgefertigten Wärmetauscherplatten mit einer Montagestation, an der eine Falzeinrichtung angeordnet ist, mittels der jede Wärmetauscherplatte an zwei einander gegenüberliegenden Rändern mit den entsprechenden Rändern der unter ihr angeordneten Wärmetauscherplatte und an den beiden anderen einander gegenüberliegenden Rändern mit den entsprechenden Rändern der über ihr angeordneten Wärmetauscherplatte verfalzbar ist, und mit einer Transporteinrichtung, mittels der die vorgefertigten Wärmetauscherplatten der Montagestation zuführbar sind (siehe z.B. US-A-5 226 234).The invention relates to a device for production of plate heat exchangers from prefabricated heat exchanger plates with an assembly station on which a folding device is arranged by means of each heat exchanger plate on two opposite edges with the corresponding Edges of the heat exchanger plate arranged below it and on the other two opposite edges with the corresponding edges of those arranged above it Heat exchanger plate is foldable, and with a transport device, by means of the prefabricated heat exchanger plates can be fed to the assembly station (see e.g. US-A-5 226 234).

Für solche Plattenwärmetauscher werden häufig identisch ausgestaltete Wärmetauscherplatten verarbeitet, wobei diese zur Sicherung des Abstandes zwischen den einzelnen Platten des fertig montierten Plattenwärmetauschers mit Vorsprüngen versehen sind. Um aus identisch gefertigten Wärmetauscherplatten einen Plattenwärmetauscher zusammenzufügen, müssen aufeinanderfolgende Wärmetauscherplatten um 90 Grad zueinander verdreht angeordnet sein, damit mittels ihrer Vorsprungelemente der Abstand zwischen den einzelnen Wärmetauscherplatten fest vorgegeben wird. Identical designs are often designed for such plate heat exchangers Processed heat exchanger plates, these for Securing the distance between the individual plates of the Provide projected plate heat exchangers with projections are. To from identical manufactured heat exchanger plates joining a plate heat exchanger must be successive Heat exchanger plates rotated 90 degrees to each other be arranged so by means of their projection elements the distance between the individual heat exchanger plates is fixed is specified.

Die Verdrehung einer Wärmetauscherplatte um exakt 90 Grad ist mit der erforderlichen Genauigkeit und Exaktheit nur vergleichsweise aufwendig durchführbar. Schon geringfügige Abweichungen von dem notwendigen Verdrehwinkel führen dazu, daß bei der Verbindung der einzelnen Wärmetauscherplatten an deren Rändern Unregelmäßigkeiten auftreten, die für die Dichtigkeitseigenschaften des herzustellenden Plattenwärmetauschers sehr nachteilig sind.The rotation of a heat exchanger plate is exactly 90 degrees with the required accuracy and exactness only comparatively complex to carry out. Even slight deviations of the necessary angle of rotation lead to the fact that when connecting the individual heat exchanger plates to their Margins irregularities occur that affect the sealing properties of the plate heat exchanger to be manufactured are very disadvantageous.

Der Erfindung liegt die Aufgabe zugrunde, die eingangs geschilderte gattungsgemäße Vorrichtung zur Herstellung von Plattenwärmetauschern aus vorgefertigten Wärmetauscherplatten derart weiterzubilden, daß bei der innigen Verbindung der Ränder von untereinander angeordneten Wärmetauscherplatten diese Ränder in Vertikalrichtung über ihre gesamte horizontale Erstreckung exakt über- bzw. untereinander angeordnet sind.The invention has for its object the above Generic device for the production of Plate heat exchangers made from prefabricated heat exchanger plates to develop such that in the intimate connection of Edges of heat exchanger plates arranged one below the other these edges in the vertical direction over their entire horizontal Extent arranged exactly above or below one another are.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Vorrichtung zwei Aufnahmestationen aufweist, die an einander gegenüberliegenden Seiten der Montagestation angeordnet sind, in denen die quadratischen und einander gleichen vorgefertigten Wärmetauscherplatten um 90 Grad zueinander verdreht stapelbar sind und aus denen die Wärmetauscherplatten mittels der Transporteinrichtung einzeln entnehmbar sind.This object is achieved in that the Device has two recording stations that are in contact with each other opposite sides of the assembly station are arranged, in which the square and the same prefabricated Heat exchanger plates can be stacked rotated by 90 degrees to each other are and from which the heat exchanger plates by means the transport device can be removed individually.

In der ersten Aufnahmestation sind sämtliche dort befindlichen Wärmetauscherplatten in ein und derselben Orientierung aufgestapelt. In der zweiten Aufnahmestation sind sämtliche dort befindliche Wärmetauscherplatten ebenfalls in ein und derselben Orientierung aufgestapelt, wobei die Orientierung im Stapel der ersten Aufnahmestation exakt um 90 Grad zu der Orientierung im Stapel der zweiten Aufnahmestation verdreht ist. Mittels der Transporteinrichtung der erfindungsgemäßen Vorrichtung werden die einzelnen Wärmetauscherplatten lediglich von ihren jeweiligen Stapeln aufgenommen und dann - ohne jedwede Verdrehung - geradlinig zur Montagestation gefördert. Hierdurch wird gewährleistet, daß die Ränder der übereinander angeordneten Wärmetauscherplatten jeweils exakt zueinander ausgerichtet sind. Der Verfalzvorgang läßt sich somit immer gleichmäßig mit konstanter Qualität durchführen, woraus sich eine hohe Dichtigkeit des Plattenwärmetauschers und damit ein im Vergleich zum Stand der Technik erhöhter Wirkungsgrad desselben ergibt. Dies geschieht im Falle der erfindungsgemäßen Vorrichtung dadurch, daß die korrekt vorpositionierten Wärmetauscherplatten während des und unmittelbar vor dem Herstellungsvorgang des Wärmetauschers nicht mehr gedreht, sondern lediglich noch geradlinig bewegt werden.In the first pick-up station are all there Heat exchanger plates in the same orientation piled up. Everyone is in the second reception station there are also heat exchanger plates in and stacked the same orientation, the orientation in the stack of the first recording station exactly 90 degrees to the Orientation in the stack of the second recording station twisted is. By means of the transport device of the invention The individual heat exchanger plates are merely a device picked up from their respective stacks and then - without any twisting - conveyed straight to the assembly station. This ensures that the edges of one another arranged heat exchanger plates exactly to each other are aligned. The folding process can therefore always be done perform evenly with constant quality, which results from a high tightness of the plate heat exchanger and thus a compared to the prior art increased efficiency of the same results. This happens in the case of the invention Device in that the correctly pre-positioned heat exchanger plates during and immediately before the manufacturing process of the heat exchanger no longer rotated, but only be moved in a straight line.

Ein weitgehend kontinuierlicher Betrieb der Montagestation der erfindungsgemäßen Vorrichtung kann erreicht werden, wenn gemäß einer vorteilhaften Ausführungsform der erfindungsgemäßen Vorrichtung deren Transporteinrichtung zwei Transporteinheiten aufweist, von denen gleichzeitig eine zwischen der ersten Aufnahmestation und der Montagestation und die andere zwischen der Montagestation und der zweiten Aufnahmestation verfahrbar ist und umgekehrt. Somit kann während des Verfalzungsvorgangs in der Montagestation von der darin nichtinvolvierten Transporteinheit bereits die nächste Wärmetauscherplatte aufgenommen werden.A largely continuous operation of the assembly station the device according to the invention can be achieved if according to an advantageous embodiment of the invention Device whose transport device has two transport units has, at the same time one between the first Receiving station and the assembly station and the other between the assembly station and the second receiving station is movable and vice versa. Thus, during the folding process in the assembly station from the one not involved Transport unit already the next heat exchanger plate be included.

Gemäß einer weiteren vorteilhaften Ausführungsform der erfindungsgemäßen Vorrichtung zur Herstellung von Plattenwärmetauschern aus vorgefertigten Wärmetauscherplatten arbeitet jede Falzeinheit der vier Falzeinheiten aufweisenden Falzeinrichtung mit zwei Falzwinkelbereichen, nämlich einem ersten Falzwinkelbereich, bei dem die ihr zugeordneten Ränder der beiden Wärmetauscherplatten um zumindest 90 Grad umgebogen werden, und einem zweiten Falzwinkelbereich, bei dem die bereits um 90 Grad umgebogenen Ränder der Wärmetauscherplatten auf insgesamt 180 Grad umgebogen werden. Der erste Falzwinkelbereich beträgt vorteilhaft etwa 135 Grad und der zweite Falzwinkelbereich etwa 45 Grad. Ein Niederhalten der Wärmetauscherplatten, deren Ränder miteinander verfalzt werden, ist nur bei dem im ersten Falzwinkelbereich ablaufenden Verfalzungsteilvorgang erforderlich, da bei dem im darauffolgenden zweiten Falzwinkelbereich ablaufenden Verfalzungsteilvorgang die aufgebrachten Kräfte nicht mehr dazu führen können, daß die Wärmetauscherplatten ausweichen können.According to a further advantageous embodiment of the invention Device for the production of plate heat exchangers everyone works from prefabricated heat exchanger plates Folding unit of the four folding units comprising folding unit with two folding angle ranges, namely a first Folding angle range, at which the associated edges of the both heat exchanger plates bent at least 90 degrees and a second folding angle range, in which the already edges of the heat exchanger plates bent by 90 degrees can be bent to a total of 180 degrees. The first fold angle range is advantageously about 135 degrees and the second Fold angle range about 45 degrees. Holding down the heat exchanger plates, the edges of which are folded together, is only for the interlocking subprocess that takes place in the first folding angle range required, because in the following second fold angle area running interlining the applied forces can no longer lead to that the heat exchanger plates can dodge.

Wenn eine zur Fixierung und Niederhaltung der Wärmetauscherplatten während des Verfalzungsvorgangs vorgesehene Niederhaltevorrichtung an der Transporteinrichtung angeordnet ist, ergibt sich eine bessere Einsicht auf dieselbe, wobei darüber hinaus im Vergleich zum Stand der Technik verbesserte Kontrollmöglichkeiten vorliegen. Darüber hinaus ist aufgrund der Anbringung der Niederhaltevorrichtung an der Transporteinrichtung sichergestellt, daß die Niederhaltevorrichtung in jedem Fall in korrekter Vertikalstellung in bezug auf die beiden Wärmetauscherplatten sich befindet, deren Ränder miteinander verfalzt werden sollen. Auch hierdurch ergibt sich ein qualitativ höherstehender Verfalzungsvorgang, der zu entsprechenden Verbesserungen bei der Dichtigkeit des letztlich hergestellten Plattenwärmetauschers führt.If one for fixing and holding down the heat exchanger plates Hold-down device provided during the folding process is arranged on the transport device, there is better insight into the same, being above In addition, compared to the prior art, improved control options available. In addition, due to the Attachment of the hold-down device to the transport device ensures that the hold-down device in in any case in the correct vertical position with respect to the two heat exchanger plates is located, the edges of which are together should be folded. This also results a qualitatively superior folding process that corresponds to the corresponding Improvements in the tightness of the ultimately manufactured plate heat exchanger leads.

Eine konstruktiv-technisch wenig aufwendige und zweckmäßige Ausgestaltung der Falzeinrichtung wird erreicht, wenn jede Falzeinheit ein Falzglied aufweist, dessen Falzflächen Flächenkontakt mit der Unterseite des unteren der beiden miteinander zu verfalzenden Ränder der beiden Wärmetauscherplatten bringbar und das unter Aufrechterhaltung des Flächenkontakts zwischen seiner Falzfläche und der Unterseite der unteren der beiden miteinander zu verfalzenden Ränder der beiden Wärmetauscherplatten um 180 Grad drehbar ist. Bei Einsatz derartiger Falzeinheiten sind die bei Durchführung des Verfalzungsvorgangs auftretenden Geräusche im Vergleich zu herkömmlichen, mit Hämmern arbeitenden Falzeinrichtungen vergleichsweise leise. Darüber hinaus ergibt sich im Vergleich zu den genannten herkömmlichen Falzeinrichtungen ein erheblich verringerter Verschleiß.A constructive and technically inexpensive and functional Design of the folding device is achieved when each Folding unit has a folding link, the folding surfaces of which contact surface with the bottom of the bottom of the two together edges of the two heat exchanger plates to be folded bringable and that while maintaining the surface contact between its folded surface and the bottom of the lower of the two edges of the two heat exchanger plates to be folded together is rotatable by 180 degrees. When using such Folding units are those when the folding process is carried out occurring noises compared to conventional, folding devices working with hammers comparatively quiet. In addition, compared to the mentioned conventional folding devices a significantly reduced Wear.

Vorteilhaft weist jede Falzeinheit ein Antriebsritzel auf, mittels dessen Drehung das Falzglied der Falzeinheit drehbar ist und welches seinerseits mittels eines angetriebenen Zahnteils drehbar ist. Die vertikale Positionierung der Falzeinheiten der Falzeinrichtung kann erfolgen, während die nächste Wärmetauscherplatte der Montagestation zugeführt wird.Each folding unit advantageously has a drive pinion, by means of its rotation, the folding member of the folding unit can be rotated and which in turn by means of a driven tooth part is rotatable. The vertical positioning of the folding units the folder can be done while the next Heat exchanger plate is supplied to the assembly station.

Gemäß einer vorteilhaften Ausführungsform der erfindungsgemäßen Vorrichtung ist die Falzfläche des Falzglieds jeder Falzeinheit als, um vorzugsweise 45 Grad, geneigte Schrägfläche ausgebildet.According to an advantageous embodiment of the invention Device is the folding surface of each member's folding link Folding unit as an inclined surface, preferably at an angle of 45 degrees educated.

Vorteilhaft weist die Niederhaltevorrichtung der erfindungsgemäßen Vorrichtung je Transporteinheit zwei Niederhalter auf, von denen die Niederhalter der einen Transporteinheit zwei einander gegenüberliegenden Rändern der Wärmetauscherplatten und die Niederhalter der anderen Transporteinheit den anderen beiden einander gegenüberliegenden Rändern der Wärmetauscherplatten zugeordnet sind. Hierdurch ist es beispielsweise möglich, die Niederhalter bereits während des Transportvorgangs der Wärmetauscherplatte so zu positionieren, daß sie den beim Verfalzungsvorgang auf die Wärmetauscherplatte durch die Falzeinheit ausgeübten Kräften widerstehen können.The hold-down device of the invention advantageously Two hold-down devices per transport unit on, of which the hold-down device of a transport unit two opposite edges of the heat exchanger plates and the hold-down of the other transport unit other two opposite edges of the heat exchanger plates assigned. This makes it, for example possible, the hold-down device already during the transport process position the heat exchanger plate so that during the folding process on the heat exchanger plate can withstand forces exerted by the folding unit.

Zweckmäßigerweise hat jeder Niederhalter ein Niederhalteglied, dessen Haltefläche in Flächenkontakt mit dem an den Rand angrenzenden Bereich der Oberseite der oberen der beiden an ihren Rändern zu verfalzenden Wärmetauscherplatten bringbar ist.Each hold-down device expediently has a hold-down member, whose holding surface in surface contact with the Edge bordering the top of the top of the two heat exchanger plates to be folded at their edges is.

Um den Verfalzungsvorgang mit großer Exaktheit ausführen zu können, ist es vorteilhaft, wenn die Haltefläche des Niederhalteglieds jedes Niederhalters mit ihrer dem Rand der Wärmetauscherplatte zugewandten Kante die Knicklinie definiert, um die herum die beiden miteinander zu verfalzenden Ränder der Wärmetauscherplatten gebogen bzw. geknickt werden.To perform the interlocking process with great accuracy , it is advantageous if the holding surface of the hold-down member each hold-down with the edge of the heat exchanger plate facing edge defines the crease line around the two edges of the Heat exchanger plates are bent or kinked.

Zwecks Erreichung einer exakten Trennung zwischen dem ersten Falzwinkelbereich und dem zweiten Falzwinkelbereich ist es vorteilhaft, wenn die sich von der die Knicklinie ausbildenden Kante der Haltefläche aufwärts erstreckende Stirnfläche des Niederhalteglieds jedes Niederhaltes als, um vorzugsweise 45 Grad, geneigte Schrägfläche ausgebildet ist, gegen die die Oberseite des oberen der beiden miteinander zu verfalzenden Ränder der Wärmetauscherplatten am Ende des ersten Falzwinkelbereichs in Anlage gerät.In order to achieve an exact separation between the first It is the folding angle range and the second folding angle range advantageous if those of the forming the kink line Edge of the holding surface upwardly extending end face of the hold-down member of each hold-down as, to preferably 45 degrees, inclined inclined surface against which the Top of the top of the two to be folded together Edges of the heat exchanger plates at the end of the first folding angle range gets in plant.

Um einerseits eine exakte Festlegung der Knicklinie zu erreichen und andererseits zu verhindern, daß die auf die Wärmetauscherplatten ausgeübten Kräfte zu einem Ausweichen derselben führen, ist es vorteilhaft, wenn das Niederhalteglied jedes Niederhalters zwischen seiner Aktivstellung, in der seine Haltefläche in Flächenkontakt mit dem an den Rand angrenzenden Bereich der Oberseite des oberen der beiden an ihren Rändern zu verfalzenden Wärmetauscherplatten ist, und seiner Ruhestellung verstellbar ist, in der es außerhalb des Raumes zwischen der Oberseite des oberen der beiden miteinander zu verfalzenden Ränder der beiden Wärmetauscherplatten und des an den Rand angrenzenden Bereichs der Oberseite des oberen der beiden an ihren Rändern zu verfalzenden Wärmetauscherplatten angeordnet ist.On the one hand to achieve an exact definition of the kink line and on the other hand to prevent that on the heat exchanger plates exerted forces to avoid them lead, it is advantageous if the hold-down member each Hold down between his active position, in which his Holding surface in surface contact with the one adjacent to the edge Area the top of the top of the two at their edges is to be folded heat exchanger plates, and its rest position is adjustable in the outside of the room between the top of the top of the two together interlocking edges of the two heat exchanger plates and the bordering area of the top of the top of the two heat exchanger plates to be folded at their edges is arranged.

Um mittels der vorstehend geschilderten Vorrichtung auch Plattenwärmetauscher herstellen zu können, an die besonders hohe Anforderungen hinsichtlich der Dichtigkeit und der Dauerhaftigkeit der Wärmetauscherplattenverbindungen gestellt werden, ist es vorteilhaft, wenn jede Falzeinheit der Falzeinrichtung und jeder Niederhalter der Niederhaltevorrichtung aus einer Außenstellung in eine Innenstellung zustellbar ist, die dem Mittelpunkt der Wärmetauscherplatte näher ist. Nach Beendigung eines ersten Verfalzungsvorgangs ist es dann möglich, die betreffende Falzeinheit und den betreffenden Niederhalter um einen vorgebbaren Zustellhub, z.B. um 6 mm in Richtung auf den Mittelpunkt der Wärmetauscherplatte zu versetzen, woraufhin dann in der bereits geschilderten Weise ein zweiter Verfalzungsvorgang durchgeführt wird, bei dem die bereits verfalzten Ränder der Wärmetauscherplatten noch einmal verfalzt werden, so daß sich eine Doppelverfalzung der Ränder ergibt, die naturgemäß dichter und fester als eine einfache Verfalzung ist.To also by means of the device described above To be able to manufacture plate heat exchangers that are special high requirements with regard to tightness and durability of the heat exchanger plate connections it is advantageous if each folding unit of the Folding device and each hold-down device of the hold-down device deliverable from an outside position to an inside position is closer to the center of the heat exchanger plate is. After completing a first fold then it is possible to the relevant folding unit and the relevant Hold-down device by a predefinable feed stroke, e.g. around 6 mm towards the center of the heat exchanger plate to move, whereupon then in the already described Way a second interlocking process is carried out at the already folded edges of the heat exchanger plates be folded again so that there is a double fold the edges are naturally denser and firmer than a simple fold.

Es hat sich als zweckmäßig erwiesen, wenn jede Aufnahmestation eine Kantumformeinrichtung aufweist, mittels der die Ränder der in der Aufnahmestation von der Transporteinrichtung aufgenommenen Wärmetauscherplatten verformbar sind. It has proven to be useful if each recording station has an edging device by means of which the edges the one in the receiving station from the transport device recorded heat exchanger plates are deformable.

Bei einem erfindungsgemäßen Verfahren zur Herstellung von Plattenwärmetauschern aus vorgefertigten Wärmetauscherplatten, bei dem jede Wärmetauscherplatte an zwei einander gegenüberliegenden Rändern mit den entsprechenden Rändern der unter ihr angeordneten Wärmetauscherplatte und an den beiden anderen einander gegenüberliegenden Rändern mit den entsprechenden Rändern der über ihr angeordneten Wärmetauscherplatte verfalzt wird, werden die Wärmetauscherplatten quadratisch und einander gleich vorgefertigt, wobei die vorgefertigten Wärmetauscherplatten alternierend aus zwei einander entgegengesetzten Richtungen um 90 Grad verdreht der Verfalzung zugeführt werden. Gemäß einer vorteilhaften Ausgestaltung des erfindungsgemäßen Verfahrens ist die 180 Grad-Verfalzung der Ränder der Wärmetauscherplatten in einen ersten Falzschritt der Ränder der Wärmetauscherplatten in einen ersten Falzschritt, der sich über einen ersten Falzwinkelbereich von zumindest 90 Grad, vorzugsweise von 150 Grad, erstreckt, und einen zweiten Falzschritt aufgeteilt, der sich über einen zweiten Falzwinkelbereich von max. 90 Grad, vorzugsweise von 45 Grad, erstreckt.In a method according to the invention for the production of Plate heat exchangers from prefabricated heat exchanger plates, where each heat exchanger plate on two opposite one another Edges with the corresponding edges of the bottom your arranged heat exchanger plate and on the two other opposite edges with the corresponding Edges of the heat exchanger plate arranged above it is folded, the heat exchanger plates are square and prefabricated each other immediately, the prefabricated Heat exchanger plates alternating from two opposite one another Direction rotated 90 degrees to the interlocking become. According to an advantageous embodiment of the invention The procedure is the 180 degree interlocking of the Edges of the heat exchanger plates in a first folding step the edges of the heat exchanger plates in a first folding step, which extends over a first folding angle range of at least 90 degrees, preferably 150 degrees, and split a second folding step, which is over a second folding angle range of max. 90 degrees, preferably from 45 degrees.

Zweckmäßigerweise wird ein an den Rand angrenzender Bereich der Oberseite der oberen der beiden an ihren Rändern zu verfalzenden Wärmetauscherplatten während des ersten Falzschritts niedergehalten. Während des zweiten Falzschritts ist ein solches Niederhalten nicht erforderlich, da die zur Durchführung der Verfalzung aufgewandten Kräfte nicht mehr zu einem Ausweichen der beiden Wärmetauscherplatten führen können.A region adjacent to the edge is expediently the top of the top of the two to be folded at their edges Heat exchanger plates during the first folding step held down. During the second folding step such a hold-down is not necessary because the Execution of the interlocking forces no longer increases can lead to evasion of the two heat exchanger plates.

Zur Schaffung qualitativ besonders hochwertiger Plattenwärmetauscher ist es vorteilhaft, wenn nach Beendigung einer ersten 180 Grad-Verfalzung die verfalzten Ränder in gleicher Weise einer zweiten 180 Grad-Verfalzung unterzogen werden.To create high quality plate heat exchangers it is advantageous if after finishing a first 180 degrees fold the folded edges in the same Undergo a second 180 degree fold.

Zweckmäßigerweise werden die Ränder der vorgefertigten Wärmetauscherplatten vorgebogen, bevor sie der Montagestation bzw. der Verfalzung zugeführt werden.The edges of the prefabricated heat exchanger plates are expediently pre-bent before it goes to the assembly station or the interlocking.

Im folgenden wird die Erfindung an Hand einer Ausführungsform unter Bezugnahme auf die Zeichnung näher erläutert.In the following, the invention is illustrated by an embodiment explained in more detail with reference to the drawing.

Es zeigen:

Figur 1
eine Prinzipdarstellung der erfindungsgemäßen Vorrichtung zur Herstellung von Plattenwärmetauschern aus vorgefertigten Wärmetauscherplatten;
Figur 2
eine Seitenansicht einer Montagestation der in Figur 1 dargestellten erfindungsgemäßen Vorrichtung zur Herstellung von Plattenwärmetauschern aus vorgefertigten Wärmetauscherplatten;
Figur 3
eine Draufsicht der in Figur 2 dargestellten Montagestation; und
Figur 4
eine vergrößerte Darstellung derjenigen Vorrichtungsteile, die bei einer Verfalzung von Rändern zweier Wärmetauscherplatten zum Einsatz kommen.
Show it:
Figure 1
a schematic diagram of the device according to the invention for the production of plate heat exchangers from prefabricated heat exchanger plates;
Figure 2
a side view of an assembly station of the device according to the invention shown in Figure 1 for the manufacture of plate heat exchangers from prefabricated heat exchanger plates;
Figure 3
a plan view of the assembly station shown in Figure 2; and
Figure 4
an enlarged view of those parts of the device that are used when folding edges of two heat exchanger plates.

Mittels einer in Figur 1 im Prinzip dargstellten erfindungsgemäßen Vorrichtung zur Herstellung von Plattenwärmetauschern aus vorgefertigten Wärmetauscherplatten 1 werden die vorgefertigten Wärmetauscherplatten 1 zu Plattenpaketen verarbeitet, wobei die Wärmetauscherplatten 1 an zwei einander gegenüberliegenden Rändern 2, 3 mit den entsprechenden Rändern 2, 3 der unter ihnen angeordneten Wärmetauscherplatte 1 und an den beiden anderen einander gegenüberliegenden Rändern 4, 5 mit den entsprechenden Rändern 4, 5 der über ihnen angeordneten Wärmetauscherplatte 1 verbunden bzw. verfalzt werden.By means of an inventive device shown in principle in FIG Device for the production of plate heat exchangers from prefabricated heat exchanger plates 1 the prefabricated Heat exchanger plates 1 processed into plate packs, the heat exchanger plates 1 on two opposite one another Edges 2, 3 with the corresponding edges 2, 3 of the heat exchanger plate 1 and arranged below them the other two opposite edges 4, 5 with the corresponding edges 4, 5 of those arranged above them Heat exchanger plate 1 are connected or rebated.

Die Wärmetauscherplatten 1 weisen Vorsprünge in vertikaler Richtung auf und bilden zwischen sich Strömungskanäle für diejenigen Medien aus, die den Wärmetauscher durchlaufen, wobei auf einen Strömungskanal für das eine Medium in vertikaler Richtung jeweils ein Strömungskanal für das andere Medium folgt.The heat exchanger plates 1 have projections in a vertical direction Direction up and form flow channels between them those media that pass through the heat exchanger, whereby on a flow channel for the one medium in vertical Direction one flow channel for the other medium follows.

Die Wärmetauscherplatten 1 sind einander gleich ausgebildet bzw. vorgefertigt.The heat exchanger plates 1 are identical to one another or prefabricated.

Zu der erfindungsgemäßen Vorrichtung zur Herstellung von Plattenwärmetauschern aus den vorgefertigten Wärmetauscherplatten 1 gehören eine Montagestation 6, an der die Wärmetauscherplatten 1 zu Plattenpaketen zusammengefügt werden, und zwei Aufnahmestationen 7, 8, an denen die vorgefertigten Wärmetauscherplatten 1 in jeweils einem Stapel 9, 10 vorgehalten werden. Im Stapel 9 der ersten Aufnahmestation 7 sind die Wärmetauscherplatten 1 um 90 Grad gedreht zu den im Stapel 10 der zweiten Aufnahmestation 8 vorgehaltenen Wärmetauscherplatten 1 angeordnet. In der Montagestation 6 werden die Wärmetauscherplatten 1 alternierend in der Anordnung gemäß dem Stapel 9 der ersten Aufnahmestation bzw. dem Stapel 10 der zweiten Aufnahmestation zu Plattenwärmetauschern verarbeitet. Eine Drehung der Wärmetauscherplatten 1 bei ihrem Transport von der ersten Aufnahmestation 7 bzw. von der zweiten Aufnahmestation 8 zur Montagestation 6 ist demgemäß nicht erforderlich.To the device according to the invention for the production of Plate heat exchangers from the prefabricated heat exchanger plates 1 include an assembly station 6 at which the heat exchanger plates 1 can be assembled into plate packs, and two receiving stations 7, 8, on which the prefabricated heat exchanger plates 1 held in a stack 9, 10 become. In the stack 9 of the first receiving station 7 are the Heat exchanger plates 1 rotated 90 degrees to those in stack 10 the second receiving station 8 held heat exchanger plates 1 arranged. In the assembly station 6, the heat exchanger plates 1 alternating in the arrangement according to Stack 9 of the first receiving station or the stack 10 of the second receiving station processed to plate heat exchangers. A rotation of the heat exchanger plates 1 during their transportation from the first receiving station 7 or from the second receiving station 8 to the assembly station 6 is accordingly not required.

Zur erfindungsgemäßen Vorrichtung gehört eine Transporteinrichtung 11, mittels der die Wärmetauscherplatten 1 von den Aufnahmestationen 7, 8 zur Montagestation 6 transportierbar sind. Hierzu weist die Transporteinrichtung 11 zwei Transporteinheiten 12, 13 auf, von denen die erste Transporteinheit 12 die Wärmetauscherplatten 1 von der in Figur 1 linken ersten Aufnahmestation 7 zur Montagestation 6 und die zweite Transporteinheit 13 die Wärmetauscherplatten 1 von der in Figur 1 rechten zweiten Aufnahmestation 8 zur Montagestation 6 transportiert. Die beiden Transporteinheiten 12, 13 der Transporteinrichtung 11 sind so miteinander verbunden, daß immer dann, wenn eine Transporteinheit 12, 13 an der ihr zugeordneten Aufnahmestation 7, 8 sich befindet, die andere Transporteinheit 13, 12 sich in der Montagestation 6 befindet. Während sich die eine Transporteinheit 12, 13 von der Aufnahmestation 7, 8 zur Montagestation 6 bewegt, bewegt sich dann die andere Transporteinheit 13, 12 von der Montagestation zur Aufnahmestation 8, 7.A transport device belongs to the device according to the invention 11, by means of which the heat exchanger plates 1 of the Recording stations 7, 8 can be transported to the assembly station 6 are. For this purpose, the transport device 11 has two transport units 12, 13 on, of which the first transport unit 12 the heat exchanger plates 1 from the one on the left in FIG first receiving station 7 to the assembly station 6 and the second Transport unit 13, the heat exchanger plates 1 of the one in FIG 1 right second receiving station 8 to assembly station 6 transported. The two transport units 12, 13 of the Transport device 11 are interconnected so that whenever a transport unit 12, 13 on its assigned Recording station 7, 8 is located, the other Transport unit 13, 12 is located in the assembly station 6. While the one transport unit 12, 13 from the Recording station 7, 8 moves to the assembly station 6, moves then the other transport unit 13, 12 from the assembly station to the receiving station 8, 7.

Die Wärmetauscherplatten 1 werden von der jeweiligen Transporteinheit 12, 13 in exakt derselben Lage an die Montagestation 6 übergeben, in der sie von der jeweiligen Aufnahmestation 7, 8 übernommen worden sind. Eine Drehung der Transporteinheiten 12, 13 und der an denen hängenden Wärmetauscherplatten 1 ist nicht erforderlich. Bei ihrer Verbringung von den Aufnahmestationen 7, 8 werden die Wärmetauscherplatten 1 lediglich in gerader Richtung gefördert, wobei keinerlei Drehung der Wärmetauscherplatten 1 erforderlich ist.The heat exchanger plates 1 are from the respective transport unit 12, 13 in exactly the same position to the assembly station 6 pass in which they are from the respective receiving station 7, 8 have been taken over. One rotation of the transport units 12, 13 and the heat exchanger plates attached to them 1 is not required. When they are shipped from the receiving stations 7, 8, the heat exchanger plates 1 only conveyed in a straight direction, none at all Rotation of the heat exchanger plates 1 is required.

Jede Transporteinheit 12, 13 hat eine mit mehreren Ansaugstellen 14 ausgerüstete Ansaugvorrichtung, durch deren Unterdruckbeaufschlagung eine Wärmetauscherplatte 1 an der Transporteinheit 12, 13 fixierbar ist. Mittels dieses Fixiervorgangs werden die Wärmetauscherplatten 1 von den Stapeln 9, 10 entnommen. Die Übergabe der Wärmetauscherplatten 1 in der Montagestation 6 erfolgt durch Abschalten des Unterdrucks an den Ansaugstellen 14, wodurch die Wärmetauscherplatten 1 in der gewünschten Anordnung in der Montagestation 6 aufgenommen werden.Each transport unit 12, 13 has one with several suction points 14 equipped suction device, by its negative pressure a heat exchanger plate 1 on the transport unit 12, 13 can be fixed. By means of this fixing process the heat exchanger plates 1 from the stacks 9, 10 taken. The transfer of the heat exchanger plates 1 in the Assembly station 6 takes place by switching off the vacuum the suction points 14, whereby the heat exchanger plates 1 in the desired arrangement in the assembly station 6 added become.

In der Aufnahmestation 7 und der Aufnahmestation 8 ist jeweils eine Kantumformeinrichtung 15 vorgesehen, mittels denen die Ränder 2, 3, 4, 5 bzw. Kanten der Wärmetauscherplatten 1 in der gewünschten Weise vorform- bzw. biegbar sind, so daß sie mit dem jeweils gewünschten Abstand zur vorhergehenden Wärmetauscherplatte 1 in der Montagestation 6 aufeinander ablegbar sind.In the receiving station 7 and the receiving station 8 is in each case an edging device 15 is provided, by means of which the edges 2, 3, 4, 5 or edges of the heat exchanger plates 1 are preformable or bendable in the desired manner so that with the desired distance from the previous one Heat exchanger plate 1 can be placed on top of one another in the assembly station 6 are.

Die von der Transporteinheit 12, 13 an der Aufnahmestation 7, 8 aufgenommene Wärmetauscherplatte 1 wird mittels der Transporteinheit 12, 13 der Transporteinrichtung 11 von der Aufnahmestation 7, 8 zur Montagestation 6 gefördert, woraufhin die Wärmetauscherplatte 1 auf die bereits in der Montagestation 6 abgelegte und bearbeitete vorhergehende Wärmetauscherplatte 1 abgelegt wird. Die Ränder 2, 3, 4, 5 der gerade abgelegten Wärmetauscherplatte 1 liegen exakt über den entsprechenden Rändern 2, 3, 4, 5 der vorher abgelegten und bereits verarbeiteten Wärmetauscherplatten 1.The from the transport unit 12, 13 at the receiving station 7, 8 absorbed heat exchanger plate 1 is by means of the transport unit 12, 13 of the transport device 11 from the receiving station 7, 8 promoted to the assembly station 6, whereupon the heat exchanger plate 1 on the already in the assembly station 6 stored and processed previous heat exchanger plate 1 is filed. The margins 2, 3, 4, 5 of the just placed Heat exchanger plate 1 lie exactly over the corresponding one Margins 2, 3, 4, 5 of the previously filed and already processed heat exchanger plates 1.

Die Montagestation 6 hat eine in Vertikalrichtung höhenverstellbare Falzeinrichtung, die aus vier Falzeinheiten 16, 17, 18, 19 besteht, von der jede einem der Ränder 2, 3, 4, 5 der Wärmetauscherplatten 1 zugeordnet ist. Die vier Falzeinheiten 16, 17, 18, 19 sind an einem Rahmen der Vorrichtung bzw. der Montagestation 6 angebracht. Jede Falzeinheit 16, 17, 18, 19 hat einen Zylinder 20, aus dessen rahmenferner Stirnseite ein Stellglied 21 vorsteht, welches über einen Hebel 22 ein mit einer Verzahnung versehenes teilkreisförmiges Zahnteil 23 antreibt. Durch Ein- und Ausfahren des Stellglieds 21 wird der Hebel 22 verschwenkt, welcher drehfest mit dem Zahnteil 23 verbunden ist und entsprechend das Zahnteil 23 dreht.The assembly station 6 has a height-adjustable in the vertical direction Folding device consisting of four folding units 16, 17, 18, 19, each of which one of the edges 2, 3, 4, 5 of Heat exchanger plates 1 is assigned. The four folding units 16, 17, 18, 19 are on a frame of the device or the Assembly station 6 attached. Each folding unit 16, 17, 18, 19 has a cylinder 20, from the end of the frame distant one Actuator 21 protrudes, which has a lever 22 with Partially circular tooth part 23 provided with a toothing drives. By moving the actuator 21 in and out Lever 22 pivots, which rotatably with the tooth part 23rd is connected and the tooth part 23 rotates accordingly.

Die Verzahnung des Zahnteils 23 ist in Eingriff mit dem Zahnkranz eines Antriebsritzels 24, welches durch Drehung des Zahnteils 23 entsprechend drehbar ist. Da der Durchmesser des Teilkreises des Zahnteils 23 größer ist als der Durchmesser des Antriebsritzels 24 ist der vom Antriebsritzel 24 zurückgelegte Drehwinkel größer als der des Zahnteils 23.The toothing of the tooth part 23 is in engagement with the ring gear a drive pinion 24, which by rotating the Tooth part 23 is rotatable accordingly. Because the diameter of the Pitch circle of the tooth part 23 is larger than the diameter of the drive pinion 24 is that covered by the drive pinion 24 Angle of rotation greater than that of the tooth part 23.

Das Antriebsritzel 24 ist fest mit einem Falzglied 25 verbunden. Das Falzglied 25 ist etwa so lang wie die Ränder 2, 3, 4, 5 einer Wärmetauscherplatte 1. Das Falzglied 25 hat eine Falzfläche 26, mit der das Falzglied 25 bei seiner Drehung mittels des Antriebsritzels 24 in Anlage an die Unterseite z.B. des Randes 2 der unteren der beiden miteinander zu verfalzenden Wärmetauscherplatten 1 gerät.The drive pinion 24 is firmly connected to a false link 25. The false link 25 is approximately as long as the edges 2, 3, 4, 5 of a heat exchanger plate 1. The false link 25 has one Folding surface 26 with which the folding member 25 rotates by means of the drive pinion 24 in contact with the underside e.g. of the edge 2 of the lower of the two to be folded together Heat exchanger plates 1 device.

Im dargestellten Ausführungsbeispiel hat, wie insbesondere aus Figur 4 hervorgeht, das Falzglied 25 als Falzfläche 26 eine Schrägfläche, welche bei der in Figur 1 gestrichelt dargestellten vertikalen Position des Falzglieds 25 mit der Unterfläche des Randes 2 der Wärmetauscherplatte 1 einen Winkel von 45 Grad einschließt. Bei einer Drehung des Antriebsritzels 24 und damit des Falzglieds 25 gerät letzteres in die in Figur 4 mit 25a bezeichnete Stellung, in der seine Falz- bzw. Schrägfläche 26 in Anlage an die Unterfläche des Rands 2 der unteren der beiden miteinander zu verfalzenden Wärmetauscherplatten 1 gerät.In the illustrated embodiment, as in particular 4 shows the folding member 25 as a folding surface 26 an inclined surface, which is shown in dashed lines in Figure 1 vertical position of the false link 25 with the lower surface the edge 2 of the heat exchanger plate 1 an angle of 45 degrees. When the drive pinion rotates 24 and thus the false song 25 gets the latter into the FIG. 4, position 25a, in which its folding or Inclined surface 26 in contact with the lower surface of the edge 2 of the lower of the two heat exchanger plates to be folded together 1 device.

Die beiden Transporteinheiten 12, 13 der Transporteinrichtung 11 weisen jeweils eine Niederhaltevorrichtung auf. Die Niederhaltevorrichtung hat zwei Niederhalter 27, 28. Die Niederhalter 27, 28 der in den Figuren 2 und 3 dargestellten Transporteinheit 12 ist den einander gegenüberliegenden Rändern 2 und 4 der Wärmetauscherplatten 1 zugeordnet, wohingegen die beiden Niederhalter der in den Figuren 2 bis 4 nicht dargestellten Transporteinheit 13 den beiden anderen einander gegenüberliegenden Rändern 3 und 5 der Wärmetauscherplatten 1 zugeordnet ist.The two transport units 12, 13 of the transport device 11 each have a hold-down device. The hold-down device has two hold-downs 27, 28. The hold-down device 27, 28 of the transport unit shown in Figures 2 and 3 12 is the opposite edges 2 and 4 assigned to the heat exchanger plates 1, whereas the two hold-downs of the not shown in Figures 2 to 4 Transport unit 13 the two other opposite one another Edges 3 and 5 of the heat exchanger plates 1 assigned.

Jeder Niederhalter 27, 28 ist mittels eines Stellzylinders 29 um eine Achse 30 verstellbar angeordnet. Stellzylinder 29 und Niederhalter 27 bzw. 28 sind mittels geeigneter Befestigungselemente an der Transporteinheit 12 fest angebracht. Durch Ein- und Ausfahren eines Stellglieds 31 des Stellzylinders 29 wird der Niederhalter 27 um die Achse 30 geschwenkt.Each hold-down 27, 28 is by means of an actuating cylinder 29 arranged to be adjustable about an axis 30. Actuating cylinder 29 and Hold-down devices 27 and 28 are by means of suitable fastening elements firmly attached to the transport unit 12. By retracting and extending an actuator 31 of the actuating cylinder 29 the hold-down device 27 is pivoted about the axis 30.

Der Niederhalter 27 hat ein Niederhalteglied 32, dessen Haltefläche 33 zum Niederhalten der beiden Wärmetauscherplatten 1, deren Ränder 2 miteinander verfalzt werden sollen, wie sich insbesondere aus Figur 4 ergibt, gegen denjenigen Bereich der Oberfläche der oberen der beiden Wärmetauscherplatten 1 in Anlage gebracht wird, der sich an den Rand 2 der oberen Wärmetauscherplatte 1 anschließt. Die dem Rand 2 zugewandte Kante 34 der Haltefläche 33 definiert die Biegeachse bzw. die Knicklinie, um die herum die beiden Ränder 2 der beiden Wärmetauscherplatten 1 gefalzt werden.The hold-down 27 has a hold-down member 32, the holding surface 33 to hold down the two heat exchanger plates 1, the edges 2 of which are to be folded together, such as results in particular from Figure 4 against that area the surface of the top of the two heat exchanger plates 1 is brought in, which is on the edge 2 of upper heat exchanger plate 1 connects. The edge facing 2 Edge 34 of the holding surface 33 defines the bending axis or the crease line around which the two edges 2 of the two heat exchanger plates 1 are folded.

Wie sich insbesondere aus Figur 4 ergibt, nimmt das Niederhalteglied 32 die vorstehend geschilderte Position auf der oberen Wärmetauscherplatte 1 ein, wenn durch Annäherung der Falzfläche 26 des Falzglieds 25 an die Unterfläche des Rands 2 der unteren der beiden Wärmetauscherplatten 1 der eigentliche Verfalzungsvorgang eingeleitet wird. An seiner sich an die Kante 34 anschließenden, dem Rand 2 zugewandten Stirnfläche 35 ist auch das Niederhalteglied 32 in Form einer Schrägfläche ausgebildet, wobei die Stirn- bzw. Schrägfläche 35 mit der Haltefläche 33 einen Winkel von 45 Grad einschließt und somit dem Winkel zwischen der Falz- bzw. Schrägfläche 26 zum Falzglied 25 entspricht.As can be seen in particular from Figure 4, the hold-down member 32 the position described above on the upper heat exchanger plate 1, if by approximation of the Folding surface 26 of the folding member 25 on the lower surface of the edge 2 of the lower of the two heat exchanger plates 1 the actual one Warping process is initiated. On his own the edge 34 adjoining the end face facing the edge 2 35 is also the hold-down member 32 in the form of an inclined surface formed, the end face or inclined surface 35 with the holding surface 33 encloses an angle of 45 degrees and thus the angle between the rebate or inclined surface 26 to Case 25 corresponds.

Wenn das Falzglied 25 über die in Figur 4 mit 25a gekennzeichnete Position hinaus verschwenkt wird, werden die Wärmetauscherplatten 1 durch das Niederhalteglied 32 des Niederhalters 27 in vertikaler Richtung fixiert. Die beiden Ränder 2 der beiden Wärmetauscherplatten 1 werden um die Kante 34 bzw. die durch diese Kante 34 der Haltefläche 33 des Niederhalteglieds 32 definierte Knicklinie in Figur 4 entgegengesetzt dem Uhrzeigersinn gebogen. Das Falzglied 25 läuft hierbei aus seiner mit 25a bezeichneten Stellung über die mit 25b bezeichnete Stellung in die mit 25c bezeichnete Stellung.If the false link 25 has the one labeled 25a in FIG Position is pivoted out, the heat exchanger plates 1 by the hold-down member 32 of the hold-down device 27 fixed in the vertical direction. The two edges 2 of the two heat exchanger plates 1 are around the edge 34 or through this edge 34 of the holding surface 33 of the hold-down member 32 defined buckling line in Figure 4 opposite bent clockwise. The false link 25 runs here from its position labeled 25a over the position labeled 25b designated position in the position designated 25c.

Der über das Stellglied 21 mit dem Zylinder 20 verbundene Hebel 22 wird aus seiner Position 22a, in der das Falzglied 25 vertikal unterhalb der Wärmetauscherplatte 1 angeordnet ist, über seine Position 22b, die der Position 25a des Falzglieds 25 entspricht, in seine Position 25c geschwenkt, die der Position 25c des Falzglieds 25 entspricht.The lever connected to the cylinder 20 via the actuator 21 22 becomes from its position 22a, in which the false link 25 is arranged vertically below the heat exchanger plate 1, about its position 22b, that of position 25a of the false link 25 corresponds to the position pivoted into its position 25c 25c of the false song 25 corresponds.

In der Position 25c des Falzglieds 25 gerät dessen Falz- bzw. Schrägfläche 26 unter Zwischenschaltung der beiden um die Knicklinie gefalzten Ränder 2 der beiden Wärmtauscherplatten 1 in Anlage gegen die Stirn- bzw. Schrägfläche 35 des Niederhalteglieds 32.In position 25c of the folding member 25, its folding or Inclined surface 26 with the interposition of the two around the Folded edges 2 of the two heat exchanger plates 1 in contact against the end face or inclined surface 35 of the hold-down member 32nd

Sobald das Falzglied 25 diese Stellung 25c erreicht, ist der erste Falzwinkelbereich, der sich im dargestellten Ausführungsbeispiel über einen Drehwinkel von 135 Grad erstreckt, abgeschlossen. Während des ersten Falzwinkelbereichs 36 ist das Niederhalten der beiden Wärmetauscherplatten 1 mittels des Niederhalters 27 erforderlich. Nach Erreichen des dem ersten Falzwinkelbereich 36 entsprechenden Falz- bzw. Biegewinkels von 135 Grad wird der Biege- bzw. Falzvorgang durch Anhalten des Antriebsritzels 24 bzw. des Falzglieds 25 unterbrochen.As soon as the false link 25 reaches this position 25c, the first folding angle range, which is in the illustrated embodiment extends over a rotation angle of 135 degrees, completed. During the first folding angle range 36 holding down the two heat exchanger plates 1 by means of of the hold-down 27 required. After reaching the first Folding angle area 36 corresponding folding or bending angle The bending or folding process is stopped by 135 degrees the drive pinion 24 or the false link 25 interrupted.

Vor der Fortsetzung des Falzvorgangs wird nunmehr das Niederhalteglied 32 des Niederhalters 22 durch Einfahren des Stellglieds 31 in den Stellzylinder 29 im Uhrzeigersinn um die Achse 30 geschwenkt, wodurch das Niederhalteglied 32 des Niederhalters 27 in die in Figur 4 mit 32a bezeichnete Position gerät, in der das Niederhalteglied 32 außerhalb des Zwischenraums zwischen der Oberfläche des oberen Randes der beiden Ränder 2 und der sich an diesen Rand 2 anschließenden Oberfläche der oberen Wärmetauscherplatte 1 angeordnet ist.Before the folding process continues, the hold-down member is now 32 of the hold-down device 22 by retracting the actuator 31 in the actuating cylinder 29 clockwise around the Axle 30 pivoted, whereby the hold-down member 32 of the hold-down device 27 into the position designated 32a in FIG device in which the hold-down member 32 outside the gap between the surface of the top of the two Edges 2 and the surface adjoining this edge 2 the upper heat exchanger plate 1 is arranged.

Nunmehr kann durch weitere Drehung des Antriebsritzels 24 bzw. des Falzglieds 25 der Falzvorgang fortgesetzt werden, bei dem die beiden Ränder 2 der beiden miteinander zu verfalzenden Wärmetauscherplatten 1 über den zweiten Falzwinkelbereich 37, der im dargestellten Ausführungsbeispiel 45 Grad beträgt, an die Oberfläche der oberen Wärmetauscherplatte 1 angedrückt werden.Now, by further rotation of the drive pinion 24 or the folding member 25, the folding process is continued, in which the two edges 2 of the two are to be folded together Heat exchanger plates 1 over the second folding angle range 37, the 45 degrees in the illustrated embodiment to the surface of the upper heat exchanger plate 1 be pressed.

Sowohl der Niederhalter 27 als auch die Falzeinheit 16, welche dem Rand 2 der Wärmetauscherplatten 1 zugeordnet sind, sind in Richtung auf den Mittelpunkt der Wärmetauscherplatte 1 zustellbar angeordnet. Somit ist es möglich, durch Wiederholung des geschilderten Falzvorgangs in einer z.B. um 6 mm in Richtung auf den Mittelpunkt der Wärmetauscherplatte 1 zugestellten Position zu wiederholen. Hierdurch wird eine Doppelverfalzung an den Rändern 2 der Wärmetauscherplatten 1 erreicht, durch die die Dichtigkeitseigenschaften des letztlich hergestellten Plattenwärmetauschers verbessert werden.Both the hold-down 27 and the folding unit 16, which are assigned to the edge 2 of the heat exchanger plates 1, are towards the center of the heat exchanger plate 1 deliverable. Thus it is possible to repeat of the described folding process in e.g. by 6 mm delivered towards the center of the heat exchanger plate 1 Repeat position. This creates a double fold reached at the edges 2 of the heat exchanger plates 1, through which the tightness properties of the ultimately manufactured plate heat exchanger can be improved.

Der vorstehend an Hand zweier Ränder 2 von übereinander angeordneten Wärmetauscherplatten 1 geschilderte Falzvorgang wird entsprechend für die anderen Ränder 3, 4, 5 durchgeführt, wobei es möglich ist, den Falzvorgang für den Rand 2 zweier Wärmetauscherplatten 1 und den Rand 4 zweier Wärmetauscherplatten 1, der dem Rand 2 gegenüberliegt, simultan durchzuführen, wie sich aus den Figuren 2 und 3 ergibt. Dies deshalb, da die Transporteinheit 12, wie sie in den Figuren 2 und 3 dargestellt ist, mit zwei Niederhaltern 27, 28 ausgerüstet ist, von denen der Niederhalter 27 dem Rand 2 der Wärmetauscherplatten 1 und der Niederhalter 28 dem Rand 4 der Wärmetauscherplatten 1 zugeordnet ist.The above on the basis of two edges 2 arranged one above the other Heat exchanger plates 1 described folding process performed accordingly for the other edges 3, 4, 5, wherein it is possible to fold the edge 2 two Heat exchanger plates 1 and the edge 4 of two heat exchanger plates 1, which lies opposite the edge 2, to be carried out simultaneously, as can be seen from FIGS. 2 and 3. This is because since the transport unit 12, as shown in FIGS and 3 is shown, equipped with two hold-downs 27, 28 of which the hold-down 27 is the edge 2 of the heat exchanger plates 1 and the hold-down 28 the edge 4 of the heat exchanger plates 1 is assigned.

Entsprechend sind die Niederhalter der Transporteinheit 13 den zu den Rändern 2, 4 senkrechten Rändern 3, 5 der Wärmetauscherplatten 1 zugeordnet.The hold-down devices of the transport unit 13 are correspondingly the edges 3, 5 of the heat exchanger plates which are perpendicular to the edges 2, 4 1 assigned.

Da die Niederhalter 27, 28 an der Transporteinheit 12 und die beiden anderen Niederhalter, die in den Figuren nicht dargestellt sind, an der Transporteinheit 13 angebracht sind, sind aufgrund verbesserter Einsichtsmöglichkeiten auch erhöhte Kontrollmöglichkeiten gegeben. Die vertikale Positionierung der Falzeinheiten 16, 17, 18, 19 kann jeweils nach Beendigung eines Verfalzungsvorgangs während des Herantransports der nächsten Wärmetauscherplatte 1 durch die Transporteinrichtung 11 erfolgen.Since the hold-down device 27, 28 on the transport unit 12 and the two other hold-downs, which are not shown in the figures are attached to the transport unit 13 are also increased due to improved insight options Control options given. The vertical positioning the folding units 16, 17, 18, 19 can each after completion a folding process during the transport of the next heat exchanger plate 1 through the transport device 11 done.

Claims (20)

  1. Device for producing plate heat exchangers from prefabricated heat exchanger plates (1), having an assembly station (6), on which a folding device (16,17,18,19) is arranged by means of which each heat exchanger plate (1) can be folded at two mutually opposing edges (2,4) with the corresponding edges (2,4) of the heat exchanger plate (1), which is arranged therebelow, and at the other two mutually opposite edges (3,5) with the corresponding edges (3,5) of the heat exchanger plate (1), which is arranged thereabove, and having a transport device (11), by means of which the prefabricated heat exchanger plates (1) can be supplied to the assembly station (6), characterised in that the device has two receiving stations (7,8) which are arranged at mutually opposing sides of the assembly station (6), in which the square and mutually identical, prefabricated heat exchanger plates (1) can be stacked in a state rotated through 90° relative to each other and from which the heat exchanger plates (1) can be removed individually by means of the transport device (11).
  2. Device according to claim 1, whose transport device (11) has two transport units (12,13), one of which (12) can be moved between the first receiving station (7) and the assembly station (6) and the other (13) can be moved between the assembly station (6) and the second receiving station (8) at the same time, and vice versa.
  3. Device according to claim 1 or 2, whose folding device has four folding units (16,17,18,19), each folding unit (16,17,18,19) having a first folding angle range (36), wherein the edges (2) of the two heat exchanger plates (1) are bent over through at least 90°, which edges (2) are associated with the folding unit (16,17,18,19), and having a second folding angle range (37), wherein the edges (2) of the heat exchanger plates (1), which edges (2) have already been bent over through at least 90°, are bent over through a total of 180°.
  4. Device according to claim 3, in which the first folding angle range (36) is approximately 135° and the second folding angle range (37) is approximately 45°.
  5. Device according to any one of claims 1 to 4, having a hold-down device (27,28), by means of which the heat exchanger plates (1) can be held down when the edges (2,4) thereof are being folded and which is arranged on the transport device (11).
  6. Device according to any one of claims 1 to 5, in which each folding unit (16,17,18,19) has a folding member (25) whose folding face (26) can be brought into superficial contact with the underside of the lower of the two edges (2) of the two heat exchanger plates (1), which edges (2) are to be folded with each other, and which can be rotated through 180° with the superficial contact being maintained between the folding face (26) thereof and the underside of the lower of the two edges (2) of the two heat exchanger plates (1), which edges (2) are to be folded with each other.
  7. Device according to claim 6, in which each folding unit (16,17,18,19) has a driving pinion (24), by means of rotation of which the folding member (25) of the folding unit (16,17,18,19) can be rotated and which can be rotated by means of a driven tooth element (23).
  8. Device according to claim 6 or claim 7, in which the folding face (26) of the folding member (25) of each folding unit (16,17,18,19) is in the form of an inclined face which is inclined at preferably 45°.
  9. Device according to any one of claims 5 to 8, in which the hold-down device has, per transport unit (12,13), two hold-down arrangements (27,28), of which the hold-down arrangements (27,28) of the first transport unit (12) are associated with two mutually opposite edges (2,4) of the heat exchanger plates (1) and the hold-down arrangements of the other transport unit (13) are associated with the other two mutually opposite edges (3,5) of the heat exchanger plates (1).
  10. Device according to claim 9, in which each hold-down arrangement (27,28) has a hold-down member (32) whose holding face (33) can be brought into superficial contact with the region, which adjoins the edge (2), of the upper side of the upper of the two heat exchanger plates (1) which are to be folded at the edges (2) thereof.
  11. Device according to claim 10, in which the holding face (33) of each hold-down member (32) of each hold-down arrangement (27,28) defines, by means of the rim (34) thereof which faces the edge (2) of the heat exchanger plate (1), the folding line about which the two edges (2) of the heat exchanger plates (1) are bent or folded, which edges (2) are to be folded with each other.
  12. Device according to claim 11, in which the end face (35) of the hold-down member (32) of each hold-down arrangement (27,28), which end face (35) extends upwards from the rim (34) of the holding face (33) that forms the folding line, is in the form of an inclined face which is inclined at preferably 45° and against which the upper side of the upper of the two edges (2) of the heat exchanger plates (1) comes into abutment at the end of the first folding angle range (36), which edges (2) are to be folded with each other.
  13. Device according to any one of claims 10 to 12, in which the hold-down member (32) of each hold-down member (27,28) can be displaced between the active position thereof, in which the holding face (33) thereof is in superficial contact with the region of the upper side of the upper of the two heat exchanger plates (1) which are to be folded at the edges (2) thereof, which region adjoins the edge (2), and the rest position thereof, in which it is arranged outside the region between the upper side of the upper of the two edges (2) of the two heat exchanger plates (1), which edges (2) are to be folded with each other, and the region of the upper side of the upper of the two heat exchanger plates (1) which are to be folded at the edges (2) thereof, which region adjoins the edge (2).
  14. Device according to any one of claims 5 to 13, in which each folding unit (16,17,18,19) of the folding device and each hold-down arrangement (27,28) of the hold-down device can be adjusted from an outer position into an inner position which is nearer the centre point of the heat exchanger plate (1).
  15. Device according to any one of claims 1 to 14, in which each receiving station (7,8) has a rim shaping device (15), by means of which the edges (2,3,4,5) of the heat exchanger plate (1), which is received in the receiving station (7,8) by the transport device (11), can be shaped.
  16. Method for producing plate heat exchangers from prefabricated heat exchanger plates (1), wherein each heat exchanger plate (1) is folded at two mutually opposite edges (2,4) with the corresponding edges (2,4) of the heat exchanger plate (1) which is arranged therebelow and at the other two mutually opposite edges (3,5) with the corresponding edges (3,5) of the heat exchanger plate (1) which is arranged thereabove, characterised in that the heat exchanger plates (1) are prefabricated so as to be square and mutually identical and in that the prefabricated heat exchanger plates (1) are supplied for folding alternately from two mutually opposite directions in a state rotated through 90°.
  17. Method according to claim 16, wherein the 180°-folding of the edges (2,3,4,5) of the heat exchanger plates (1) is divided into a first folding step, which extends over a first folding angle range (36) of at least 90°, preferably of 135°, and a second folding step which extends over a second folding angle range (37) of a maximum of 90°, preferably of 45°.
  18. Method according to claim 17, wherein a region of the upper side of the upper of the two heat exchanger plates (1), which are to be folded at the edges (2) thereof, is held down during the first folding step, which region adjoins the edge (2).
  19. Method according to any one of claims 16 to 18, wherein the folded edges (2) are subjected in an identical manner to a second 180°-folding operation after a first 180°-folding operation has been completed.
  20. Method according to any one of claims 16 to 19, wherein the edges (2,3,4,5) of the prefabricated heat exchanger plates (1) are pre-bent before they are supplied for folding.
EP99118505A 1998-10-02 1999-09-18 Apparatus for making plate heat exchangers from prefabricated heat transfer sheets Expired - Lifetime EP0990473B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19845388 1998-10-02
DE19845388A DE19845388C2 (en) 1998-10-02 1998-10-02 Device and method for producing plate heat exchangers from prefabricated heat exchanger plates

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EP0990473A2 EP0990473A2 (en) 2000-04-05
EP0990473A3 EP0990473A3 (en) 2002-03-06
EP0990473B1 true EP0990473B1 (en) 2004-06-23

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CN107855430B (en) * 2017-09-22 2019-04-05 徐州德坤电气科技有限公司 A kind of control method of fin assembly automatic expanding guard system supporting steel plate merging unit

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US4510660A (en) * 1980-08-15 1985-04-16 Snyder General Corporation Method of manufacturing a two-plate heat exchanger
US5226234A (en) * 1992-06-29 1993-07-13 General Motors Corporation Method for assembling heat exchanger tubes

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DE19845388A1 (en) 2000-04-20
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EP0990473A2 (en) 2000-04-05
EP0990473A3 (en) 2002-03-06

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