Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
  • B21C47/24—Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer
  • B21C47/247—Joining wire or band ends
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
  • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
  • B23P11/005—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by expanding or crimping
• • 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
  • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
  • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
  • B21D39/031—Joining superposed plates by locally deforming without slitting or piercing
• • 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
  • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
  • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
  • B21D39/034—Joining superposed plates by piercing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
  • B21C47/24—Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer
• • 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
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49826—Assembling or joining
  • Y10T29/49833—Punching, piercing or reaming part by surface of second part
• • 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
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49826—Assembling or joining
  • Y10T29/49908—Joining by deforming
  • Y10T29/49924—Joining by deforming of parallel side-by-side elongated members
• • 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
  • Y10T29/00—Metal working
  • Y10T29/53—Means to assemble or disassemble
  • Y10T29/53709—Overedge assembling means

Definitions

• the invention relates to a method and a device for connecting a strip end of a first metal strip to the strip beginning of a second metal strip, in particular in a strip processing line or strip processing line, wherein the strip end and the strip start positioned one above the other to form an overlap and in the region of the overlap at a plurality of connection points be connected to each other.
• strip processing plants which are also referred to as strip processing lines
• coils wound into coils are usually unwound in the infeed part, then pass through one or more treatment stations and are optionally rewound in the outlet section or alternatively also cut into sheets. So that the tapes do not always have to be re-threaded, the beginning of the tape of a new covenant is connected to the tape end of the last covenant.
• connection points as welding points by friction spot welding.
• Such a method can be used universally for various metal alloys and in particular aluminum or aluminum alloys, in particular without disturbing burr formation (cf. EP 2 202 025 A1).
• the friction spot welding may possibly cause problems when welding coated strips.
• z As the welding of aluminum to steel, the service life of the tools is not optimal.
• punched connections are often used in practice, which are also referred to as stitching and can generally be used up to a strip thickness of about 6 mm.
• the problem is often the fact that in the course of punching caused by the cutting gaps of the punching tools burrs or still loose or still easily associated with the bands bauble particles.
• burrs or baubles may break off and adhere to the process line rolls, especially if they are plastic-coated rolls.
• it has also been proposed to mask punching connections by means of adhesive tape (cf., for example, DE 10 2005 037 182 A1).
• adhesive bonds are also used in practice, but generally only up to a maximum strip thickness of 1 mm. With larger strip thicknesses, there is the risk that the adhesive seam in the strip treatment line will be peeled off when rolls overflow because of the bending stiffness of the strips.
• the invention is therefore an object of the invention to provide a method for connecting metal bands or beginning / end of metal bands, especially in a band treatment plant of the type described above, which is universally applicable to various metal alloys and in particular aluminum or aluminum alloys and without disturbing burr formation can be realized.
• Push-through joining also referred to as clinching
• a clinching tool usually consists of a punch and a die. The tapes to be joined are pressed by the punch into or against the die, as in deep drawing under plastic deformation.
• the bands are connected without the use of rivets form-fitting (and non-positively) with each other.
• the invention is based on the recognition that metal strips can be connected to one another simply and reliably by means of clinching or clinching.
• metal strips of a wide variety of alloys, and in particular aluminum strips can be reliably connected to one another. It can metal strips of different thickness and strength are interconnected.
• the advantage here is the fact that only a forming process and no cutting process connects the two bands together, so that no burrs or baubles arise.
• the use of the known per se fürsetzyoggens in the course of the connection of tape ends of metal strips, in particular in strip processing lines, is consequently in the context of the invention is of particular importance. It can produce high quality tape connections and high strength, which also meet the high demands in belt treatment plants or belt processing lines. Even coated or coated metal strips can be easily connected with the help of clinching.
• a plurality of connecting points spaced transversely to the strip running direction are preferably produced, forming at least one connecting point row extending over the bandwidth or almost the bandwidth.
• the invention is based on the recognition that high compression forces can be applied with the aid of conventional connection pressing devices, which are also used, for example, for punched connections, so that it is possible to set a high number of connection points at the same time. It may be sufficient to connect the beginning of the tape and the end of the tape with only one connection point row.
• the invention proposes several times in the direction of strip h in each other arranged gleichspun kte under education
• connection point rows are set along the bandwidth and / or in the strip running direction one after the other, individually or in groups.
• at least one connecting point row is preferably set at the same time.
• all connection point rows are set at the same time.
• connection points are created with a connection press.
• the invention proposes, the entire band connection, d. H. All connection points, with a maximum of three pressing strokes, preferably to produce with only a single pressing stroke. If, for example, two or three connection point rows are set, it is possible to set these in chronological succession with one press stroke each. However, preferably all connection point rows (eg two or three connection point rows) are set with a single press stroke.
• the method according to the invention can be connected metal strips of different thicknesses. Overall, the method is used in a thickness range of 0.15 mm to 5 mm. It is within the scope of the invention to connect strips of different thicknesses with one and the same clinching tool. However, different clinching tools are preferably used for bands of different thicknesses. It may therefore be expedient to use clinching tools with different point diameters (or punch diameters) for different strip thicknesses or strip thickness ranges. For thin tapes can be worked with small dot diameters, in which case preferably many connection points are set. For thick bands, it is preferred to work with large dot diameters, in which case fewer connection points are set.
• the invention proposes in a preferred embodiment to select from a plurality of available clinching tools either a suitable for each band clinching tool and with a To transfer tool changing device from a waiting position outside the connection press in a working position within the connection press. It is possible to move or move the clinching tools during the tool change transversely to the direction of tape travel. Preferably, however, the clinching tools are moved parallel to the direction of the strip during the tool change.
• the invention is based on the recognition that the clinching tool usually consists of upper tool and lower tool, so that upper tool and lower tool can be moved outside of the belt plane parallel to the belt plane.
• the inventive method is thus characterized by high flexibility.
• the invention also relates to a device for connecting metal strips with a method of the type described.
• a device is characterized by a connection press with press frame, press top and press bottom, wherein the press upper part an upper tool with at least one punch (or a die) for the clinching and a lower tool with at least one die (or a punch) are fixed to the press base for the clinching, wherein press upper part and / or press lower part for applying a pressing force with one or more drives (against each other) are movable. So it is possible to move the press upper part with the upper tool by means of drives against the fixed lower tool or vice versa.
• the drives can be z.
• B. act hydraulic cylinders. It can be used in particular on existing constructions of punch joint presses. It can be applied high pressing forces, so that not only individual connection points, but at the same time a plurality of connection points can be set, in particular one or more complete connection point rows.
• the invention proposes that the upper tool is designed as a multiple tool with a plurality of punches distributed over the bandwidth (or dies) and the lower tool as a multiple tool with multiple distributed over the bandwidth matrices (or punches).
• Upper tool and lower tool are designed as a multiple tool with a plurality of punches distributed over the bandwidth (or dies) and the lower tool as a multiple tool with multiple distributed over the bandwidth matrices (or punches).
• they can have more than 10 punches or dies, preferably more than 20 (eg 30 or more) punches or dies distributed over the bandwidth. If - as explained below - without a matrix, that is, working with a contourless flat die, if necessary, a common mating surface can be realized for a variety of punches.
• Upper tool and lower tool thus form a clinching tool or a tool set, wherein upper tool or lower tool preferably via guides, for. B. can be connected to each other via guide columns.
• These guides, z. B. guide columns are arranged in the assembled state of the tool in the connection press outside the bandwidth.
• a tool changing device with a plurality of upper tools and a plurality of sub-tools (and consequently several tool sets), which optionally from a working position within the press in a waiting position can be transferred outside the press and vice versa.
• the upper tools and lower tools are transferred with the tool changing device parallel to the strip running direction from the working position to the waiting position and vice versa.
• These drives can, for. B. hydraulic change drives or change cylinder to work on the tools.
• This variant with parallel exchange direction has the advantage that the tools can be changed even if the metal strip is in the machine and thus in the connection press, because the upper tool is located above the
• Band level and the lower tool is located below the belt level, so that the tools can also be replaced when the tools are connected like a frame via guide columns.
• the upper tools and lower tools can be transferred with the tool changing device but also transversely to the strip running direction from the waiting position to the working position and vice versa.
• the tool changing device then preferably has at least one changeover table arranged next to the press with the tools. On the shuttle table, the several tools are arranged in the strip running direction one behind the other. The shuttle table then moves (parallel to the direction of tape travel) z. B. a position and a new tool is pushed (transverse to the direction of tape travel) in the press frame. If the upper tool and lower tool are connected to each other via guide columns, it is necessary to make the replacement when there is no metal strip in the machine.
• the tool changing device With the aid of the tool changing device, it is possible to provide a plurality of clinching tools or tool sets, so that a simple adaptation of the machine to the respective conditions, in particular to different strip thicknesses, can take place.
• the tool changing device it is possible to equip the tool changing device with an additional (conventional) punching tool, so that the machine can also be converted into a punching device if required.
• the templates may be z. B. may be a contoured or profiled die, which may be adapted to the stamp shape. In the context of the invention, however, the die also means a non-contoured, flat die and consequently a flat counter-tool, so that "clinchless" clinching methods are also included as it were.
• the bands are connected to each other by tempered clinching. Then it is provided that the metal strips to be joined are heated before and / or during the joining. For this purpose, it is possible to preheat the tapes themselves with suitable tempering devices and then to dinchen. Alternatively or additionally, the temperature control can also take place via the clinching tools themselves. For this purpose, it is possible to heat the upper tool and / or lower tool, so that the tape is then heated under contact pressure and then formed. For this purpose, it may be expedient to work with a non-contoured die or a non-contoured counter-tool, counter-tool and / or punch being heatable.
• a heating of the bands via one or both tools it may be appropriate to the bands before clinching or pressing with suitable means, for. B. a clamping device or the like to press against each other. So it is possible to press the bands with a hold-down against the (heated) mating surface, so that it comes to heating of the connection area. Subsequently, the clinching is done with the help of the punch. A contact pressure during heating can also be done with the tools or stamps themselves. In the (first) heating phase then only a fixation of the bands takes place and thereby the heating and in a (second) Clinchphase then the connect.
• the moving tool z. B. the upper tool position adjustable is set, in particular when the stamp must be positioned in a heating phase for the contact preheating on the tape.
• the contact pressure (during heating) is band-dependent adjustable.
• tempering heating of the metal strips whose formability or their formability is increased, so that the connection process can be optimized. This is particularly advantageous in the connection of brittle materials, since the formability of brittle materials can be improved by tempering. Overall, the tempering may be advantageous for certain materials or material combinations. Cracks can be avoided.
• Figure 1 shows a first embodiment of the invention in a vertical section
• Figure 2 is a simplified view of the article of Figure 1 in
• FIG. 3 shows a second embodiment of the invention, a vertical section
• Figure 4 shows the article of Figure 3 in a side view
• Figure 5 is a simplified view of the article of Figure 4 in
• the figures show a device for connecting metal strips, namely for connecting a band end of a first metal strip to the strip beginning of a second metal strip.
• a device for connecting metal strips namely for connecting a band end of a first metal strip to the strip beginning of a second metal strip.
• Such a device is preferably integrated in a belt treatment plant (belt process line), for. B.
• connection points are produced by means of clinching.
• the device has a connection press 2 with press frame 3, upper press part 4 and lower press part 5.
• the tape running direction B is indicated in Figure 4, in Figures 1 and 3 it is perpendicular to the plane.
• an upper tool 6 is fastened with a plurality of punches 8 for clinching.
• a lower tool 7 is fixed with a plurality of dies for clinching.
• Upper tool 6 with punches 8 and lower tool 7 with 9 dies form a tool set 10a, b, c.
• Upper tool 6 and lower tool 7 are each formed as multiple tools, each with a plurality of distributed over the bandwidth stamp 8 and 9 dies.
• the press upper part 4 for applying the pressing force with the drives 1 1 against the fixed press base 5 can be moved.
• the drives 1 1 are formed in the embodiments as a hydraulic pressure cylinder 1 1, which are connected with their pistons to the movable press upper part 4 and are supported on the fixed upper spar of the press frame 3.
• Figures 1 and 3 show the press 2 in divided representation each closed in a half
• the press upper part 4 is guided on guides 3 on the press frame 3.
• the illustrated embodiments are each equipped with a tool changing device 12, which provide a plurality of tool sets 10a, b, c, each consisting of upper tool 6 and lower tool 7, available.
• this tool changing device 12 the individual tool sets 10a, b, c can be converted from a working position within the press into a waiting position outside the press, and vice versa.
• the desired conditions eg. B. adapt to the respective strip thickness.
• FIGS. 1 and 2 on the one hand and FIGS. 3 to 5 on the other hand show two embodiments with differently configured tool changing devices 12.
• FIGS. 1 and 2 show a first embodiment in which the tools 6, 7 with the tool changing device 12 are transferred from the working position to the waiting position transversely to the strip running direction B.
• the tool changing device 12 is arranged laterally next to the press 2 in this embodiment. It has a shuttle table 14 with several along the strip running direction B successively arranged tool sets 10a, b, c. If the tool located in the connection press 2 is to be exchanged, it is pulled (or pushed) transversely to the strip running direction B out of the press onto the changing table 14. The shuttle table 14 then moves parallel to the direction of tape travel, z. B. a position, so then another tool transverse to the direction of tape B in the press 2 hin-
• the first tool 10a has a series of punches and dies
• the second tool set 10b has two rows of punches and dies arranged one behind the other in the direction of travel B
• the third tool set 10c has three rows of punches and dies arranged one behind the other in the direction of strip travel, so that optionally one, two or three rows of connecting points can be set with a single press stroke, depending on which tool 10a, b, c is arranged in the press 2.
• an additional tool set 10 ' is provided, which is designed as a punching tool 10', so that the press can also be easily converted for a punched connection. It becomes clear that z. B.
• different tool sets can be used, wherein the individual tool sets 10 a, b, c usually have different dot diameter or punch diameter.
• small dot diameters are usually used, in which case relatively many connection points are set.
• large dot diameters are used, with fewer dots usually being placed.
• upper tool 6 and lower tool 7 are connected to each other by forming the tool set 10a, b, c via guides 13.
• guides 13 In the exemplary embodiment are guide columns 13, which ensure that upper tool 6 and lower tool 7 are properly moved together with punches and dies in the desired position.
• Each tool set has a total of four guide elements arranged at the corners.
• Figures 3 to 5 show a second embodiment in which the tool sets 10a, b, c and 10' along the tape running direction B are moved to the exchange.
• the individual tool sets are in turn arranged in the belt running direction B one behind the other, but this time not offset laterally to the connection press 2, but along the tape running direction offset to the connecting press 2. Nevertheless, the passage of the metal strip is not disturbed because the upper tools 6 always above the metal strip or the band plane E and the lower tools 7 are always arranged below the metal strip and since the guide columns 13 are always arranged outside the band area.
• FIG. 4 shows a view in which the punching tool 10 'is arranged in the machine by way of example.
• alternating drives are usually provided, for. B. hydraulic drives, which are not shown in detail in the figures.
• FIGS. 2 and 5 show that with the device according to the invention, a multiplicity of connection points spaced transversely to the strip running direction B can be produced at the same time to form at least one connecting point row extending over the bandwidth or almost the bandwidth. Depending on which of the tools is used, several in the strip running direction can also be used at the same time.
• connection press provides sufficient pressing forces with the hydraulic cylinders 11.
• the bands can be heated before and / or during clinching.
• suitable tempering devices can be provided. Details are not shown.

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• 2012
  • 2012-09-03 DE DE102012108161.1A patent/DE102012108161B4/de not_active Expired - Fee Related
• 2013
  • 2013-08-22 CN CN201380022083.8A patent/CN104245173B/zh not_active Expired - Fee Related
  • 2013-08-22 WO PCT/EP2013/067430 patent/WO2014033037A1/de active Application Filing
  • 2013-08-22 RU RU2015112108A patent/RU2621089C2/ru not_active IP Right Cessation
  • 2013-08-22 US US14/381,428 patent/US20150121678A1/en not_active Abandoned
  • 2013-08-22 CA CA2875241A patent/CA2875241C/en not_active Expired - Fee Related
  • 2013-08-22 KR KR1020157005398A patent/KR20150052052A/ko not_active Application Discontinuation
  • 2013-08-22 EP EP13750721.6A patent/EP2892666A1/de not_active Withdrawn
• 2014
  • 2014-12-12 ZA ZA2014/09160A patent/ZA201409160B/en unknown

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