DE102006019326B3 - Fabrication system e.g. for fabricating pinions and gear-units, has interlinked processing stations with elevated transfer module - Google Patents

Abstract

An interlinked fabrication system comprises an upper transfer module (4) with a horizontal transfer guide-way (6), and the upper transfer module (4) can be driven forwards and backwards on the guide-way (6). At least one transversal feed unit is used for individual pallets, and a number of processing gangways have several processing stations (12a,12b), especially rotational- and milling-stations. At least two pallet hand-over locations (9a,9b) are used for individual pallets, and those for the upper transfer module (4) are accessible by at least one transversal feed unit. An independent claim is included for a fabrication installation with several interlinked fabricating systems.

Description

The The invention relates to a linked manufacturing system for processing of workpieces that arranged for transport on pallets.

A linked production system has become known, for example, by the DE 10 2004 003 587 A1 ,

From the EP 1 488 884 A2 Furthermore, a production line with at least two processing machines has become known, which has a delivery conveyor and a delivery conveyor on different levels. The workpieces are arranged on pallets.

At the Manufacture of workpieces, such as gears or gear, go through each one workpiece typically one after the other a large number of different machining processes, such as Turning, milling or cockroaches. The machining processes are each using highly specialized processing machines executed. The processing machines are with transport facilities chained together, leaving the workpieces from a processing machine to the next can reach.

Around the workpieces not to damage during transport, are the workpieces on workpiece carriers, called Pallets, arranged. A pallet may contain one or more workpieces (or also tools). For processing individual workpieces taken from a pallet by means of a portal and fed to a processing machine. To During machining, the portal returns the workpiece to the pallet.

There the processing times differ on different processing machines are long, need workpieces and thus also pallets with workpieces between the different ones machining operations be stored. For this buffer spaces are used for pallets.

easy Manufacturing systems transport pallets with conveyor belts Fixed material flow direction from processing station to processing station. In front of the processing stations, pallets are placed on the conveyor belt if necessary dammed up a pallet with their workpieces for machining on the Row is. Such simple manufacturing systems work with one Fixed processing sequence of the pallets.

An advanced linked manufacturing system is through the DE 10 2004 003 587 A1 , especially the local ones 8th , known. This manufacturing system comprises several handling cells (logistics cells) for workpiece carriers (= pallets), which are connected linearly via workpiece carrier portals. The workpiece carrier portals have a fixed material flow direction. Of the handling cells extending from the workpiece carrier portal extending workpiece portals, which are each connected to a plurality of processing stations. A workpiece portal can access workpieces of a workpiece carrier at a supply location of the hand-handling cell. By connecting the workpiece portals on the handling cell, any processing order of the pallets can be achieved at a processing station.

at a larger number from different processing stations need in this known chaining system however, comparatively many handling cells are filed, because at a handling cell can for space reasons only few, typically two, workpiece portals are connected. The handling cells often create an unnecessarily large buffer capacity for workpiece carriers, and There are high costs and large space requirements. To a workpiece carrier of a processing station to a not immediately adjacent, other work station to transport, the workpiece carrier must several handling cells are served, which is labor intensive and is time consuming.

task the invention

It is in contrast the object of the present invention, a concatenated manufacturing system in which also a large number of processing stations can be linked together in an efficient way, in particular whereby the space requirement decreases and the transport of workpieces between the processing stations with high flexibility in the processing sequence is accelerated.

Short description of invention

• – ein Obertransfermodul mit einer horizontalen Transferführung in einer Hauptförderrichtung (x-Richtung), wobei das Obertransfermodul in der Transferführung vorwärts und rückwärts auf der Transferführung verfahrbar ist, wobei das Obertransfermodul zur Handhabung einzelner Paletten ausgebildet ist, und wobei die Transferführung in einer Höhe von wenigstens 2,0 m über dem Boden angeordnet ist,
• – wenigstens ein Logistikmodul, umfassend eine Vielzahl von Pufferplätzen für die Lagerung von Paletten und eine eigene, lokale Transporteinrichtung zur Handhabung einzelner Paletten innerhalb des Logistikmoduls, wobei das Obertransfermodul einzelne Paletten an das Logistikmodul übergeben oder von ihm entgegennehmen kann,
• – wenigstens eine Querfördereinheit für einzelne Paletten,
• – eine Mehrzahl von Bearbeitungssträngen, die jeweils aufweisen a) mehrere Fertigungsstationen, insbesondere Dreh- oder Frässtationen, an denen Werkstücke bearbeitet werden können, b) mindestens zwei Übergabeplätze für einzelne Paletten, wobei die Übergabeplätze bezüglich der x-Richtung seitlich der Transferführung und außerhalb des mindestens einen Logistikmoduls angeordnet sind, wobei die Übergabeplätze für das Obertransfermodul mittels der wenigstens einen Querfördereinheit zum Ablegen und Aufnehmen einer Palette zugänglich sind, wobei die Übergabeplätze in einer Höhe von wenigstens 2,0 m über dem Boden angeordnet sind, c) ein Portal, das zur Handhabung von Werkstücken ausgebildet ist, und das eine horizontale Portalführung aufweist, die die Transferführung kreuzt, wobei das Portal Werkstücke von Paletten auf den Übergabeplätzen zu den Fertigungsstationen und zurück transportieren kann, und wobei das Portal in einer Höhe von wenigstens 2,2 m über dem Boden angeordnet ist.

This object is achieved by a linked manufacturing system for the machining of workpieces, which are arranged for transport on pallets, comprising

• An upper transfer module having a horizontal transfer guide in a main conveying direction (x direction), wherein the upper transfer module in the transfer guide is movable forwards and backwards on the transfer guide, the upper transfer module being adapted to handle individual pallets, and wherein the transfer guide is at a height of at least Located 2.0 m above the ground,
• At least one logistics module comprising a plurality of buffer spaces for the storage of pallets and a separate, local transport device for handling individual pallets within the logistics module, wherein the upper transfer module can transfer individual pallets to the logistics module or receive them from it,
• At least one transverse conveyor unit for individual pallets,
• B) at least two transfer points for individual pallets, the transfer points being laterally of the transfer guide and outside the transfer guide with respect to the x-direction at least one logistics module are arranged, wherein the transfer points for the upper transfer module by means of at least one cross conveyor unit for depositing and receiving a pallet are accessible, the transfer points are arranged at a height of at least 2.0 m above the ground, c) a portal, the is designed for handling workpieces, and which has a horizontal gantry guide, which crosses the transfer guide, the portal can transport workpieces of pallets in the transfer stations to the manufacturing stations and back, and wherein the portal at a height of at least 2.2 m above the Floor is arranged.

at the linked production system according to the invention are the processing strings (with workpiece portal and manufacturing stations) do not have one Logistics cell (or handling cell), but connected via the top transfer module. As a result, the number of connectable processing lines is basically unlimited and in particular, independently on the number of logistics modules. Preferably belong in a manufacturing system according to the invention to a logistics module three or more processing lines. Around a pallet from one processing strand to another processing strand The pallet does not have to pass through the logistics module become; the transport can rather be done directly via the top transfer module and is therefore very fast. If necessary, of course, too an intermediate buffering takes place in the logistics module. It is preferred on a transfer guide only one top transfer module is used, which runs the entire length of the transfer guide is movable; it can but also used several upper transfer modules on a transfer guide which together take over the transport of the pallets along the transfer route.

One Logistics module typically functions within the scope of the invention Central buffer and pallet supply unit for all processing lines. With Help of a logistics module can also be a link to another manufacturing system (And in particular a further upper transfer module and others Processing strands) respectively. As the manufacturing system according to the invention With only a few logistics modules, it is cheaper and needed less space than conventional Manufacturing systems.

The The transfer module and the portals of the processing lines are via transfer stations for pallets connected. With the help of a cross conveyor unit can a handover of pallets between transfer points and Obertransfermodul done. Impact the pallets on the transfer stations the top transfer module does not transport other pallets.

Around a high utilization of the production stations of a processing line to reach each processing strand over two transfer points for pallets. While the workpieces a pallet at a first transfer point are currently being processed by the portal and the production stations, can at the second transfer point a pallet exchange (processed pallet against to be processed Pallet) take place. Through this decoupling of the transport of the Upper transfer module and workpiece machining a high utilization of the production stations can be achieved.

at the manufacturing module according to the invention will be added even more efficient use of space due to the higher level of transfer of the top transfer module, the transfer places and the portals and portal tours reached. By the arrangement at a height of at least 2.0 m (at the portal and portal guidance in height of at least 2.2 m) is obtained on the ground surface, for example as a footprint for processing machines / production stations and can be used as walk-in or passable zones. walk Zones and thus better access facilitate, for example, maintenance work, at the production stations, for example, and facilitate transport operations in a workshop. Better accessibility and optical overview near the ground increase also the operational safety of the manufacturing system.

preferred embodiments the invention

In an advantageous embodiment of the linked production system according to the invention, at least one local transverse conveyor unit is formed on each processing line, which can transfer individual pallets between the upper transfer module and the transfer stations of the processing line. In this embodiment, the Upper transfer module easier to be built.

at another, also advantageous embodiment is the at least a cross conveyor unit formed on the upper transfer module, wherein the upper transfer module a second, horizontal conveying direction (y-direction) can serve transverse to the x-direction. In this embodiment becomes only one cross conveyor unit per top transfer module needs what especially inexpensive is.

Advantageous is still an embodiment which provides local buffer space for individual pallets are the side of the transfer guide are arranged and for storing and picking up a pallet are accessible to the upper transfer module, and that the local buffer spaces at a height of at least 2.0 m above are arranged on the floor. By local buffer locations outside the logistics module can long travels for Pallets to the logistics module for temporary storage can be avoided. Using local buffer locations is concurrent use a formed on the upper transfer module cross conveyor unit very beneficial.

at a preferred embodiment of this embodiment, the local buffer locations in the area of transfer places at least a processing strand provided. This allows palette changes at these transfer points be accelerated.

A advantageous embodiment of the linked manufacturing system provides that the transfer points of the processing lines are provided with a transport device, by means of a pallet, the one on a transfer place arranged, lowered to the ground and also a pallet of Floor to the transfer point can be raised up. This allows a manual pallet change at the transfer points, if the top transfer module or a local cross conveyor fails.

Prefers is also an embodiment at the all manufacturing stations of a processing strand trained are to perform identical machining operations on the workpieces. The speeds up the processing of a pallet at one of the transfer points. Farther becomes the decoupling of pallet transport by means of upper transfer module and processing in the processing line ensured at exactly two transfer points.

Farther preferred is an embodiment at the portal tours the portals of the processing lines above the transfer guide run. In this case, an access of a portal gripper on a workpiece a pallet at a transfer point, which is typically about the same height as a pallet place of the top transfer module, easily done from the top.

Especially preferred is an embodiment at the crossing points of transfer and portal tours one support each is formed, which is a portal carrier of the portal guide, the transfer guide and pick up the transfer points, in particular being in the support a control cabinet for the portal is integrated. The support at the crossing point bends elastic deformations and creep deformations on the transfer guide and portals in front. By receiving the cabinet in the support is achieved a space-saving dual functionality.

Prefers is an embodiment in which the upper transfer module has an oil pan. Oil, which from the workpieces after being processed by a palette (for example, as a Wire frame is formed) drips, is so caught, and Pollution, in particular the transfer management is avoided.

A advantageous development of this embodiment provides that the oil pan a lower outlet opening having a closure, wherein the closure in a closed Position is biased, in particular by gravity or spring force, and that emptying places are provided for the upper transfer module in the linked production system, at which opening elements, in particular wedges or protrusions, are formed, the closure of the upper transfer module to a Automatically open the emptying station in particular wherein the emptying places at stopping places of Upper transfer module trained next to the transfer points are. This will cause a regular emptying the oil pan ensured automatically and with little effort.

Especially preferred is an embodiment the chained invention Manufacturing system in which the upper transfer module has two pallet spaces, which are arranged side by side, in particular wherein the two pallet places in the x direction arranged one behind the other. The upper transfer module is H-module educated. When changing pallets at a transfer point, the first Pallet place one processed pallet, and the second Pallet place immediately thereafter a pallet still to be processed provide. In between, the top transfer module only needs about one pallet length method. This speeds up the pallet change at the transfer points.

An advantageous development of this embodiment provides that on the top transfer module two cross-conveyor units are formed, wherein Each cross conveyor unit can serve a pallet space of the top transfer module. In this case, local cross-conveyor units are dispensable, which saves costs.

Prefers is still an embodiment during the transfer, the transfer places, the Portal and possibly local buffer spaces at a height of at least 2.5 m over are arranged on the floor. This provides more headroom for individuals Ground safely, and improves the usability of the superstructures Soil.

All Particularly preferred is an embodiment of the linked Manufacturing system, where the at least one logistics module an end to the transfer is arranged, in particular that at the two ends of the transfer guide respectively a logistics module is arranged. At the end of the transfer is enough space available, to arrange the logistics module there. In particular, crossovers can of the logistics module or the logistics module associated facilities with the transfer guide easily avoided. Note that a non-terminal logistics module a transfer guide does not interrupt within the scope of the invention, but according to the invention the transfer guide is arranged. In the context of the invention, but a logistics module to two upper transfer modules of different inventive chained Be connected manufacturing systems. Preferably, a chained according to the invention Production system exactly one or exactly two logistics modules.

A especially preferred embodiment is characterized in that in the at least one logistics module at least one function place for a pallet is set up, that at the at least one function place a device for carrying out of work on workpieces a pallet, which is arranged at the functional location provided is. This function space can be used by all processing branches of the Manufacturing system (or pallets from any machining strand come) are used. This allows local devices for execution of work on workpieces at the portal tours the processing lines be saved. The portals of the processing lines need then fewer transport operations of workpieces to deal with, and if necessary This saves portals.

at A preferred embodiment of this embodiment is the device for deburring workpieces, or for cleaning or washing workpieces, or for measuring Workpieces, or designed for screwing workpieces is. All these often can work centralized and thus realized with less effort.

Prefers is still an embodiment of the linked manufacturing system, where the at least one logistics module is designed as automation cell, with the on any Pallets stored in the automation cell are accessed can be. In other words, on every pallet in the automation cell can be accessed directly (especially without restocking), for example for the purpose of removal or transfer to the transfer module. The automation cell is the processing sequence of pallets especially flexible.

• – ein LM-Dreiachsmodul mit einer horizontalen LM-Modulführung in einer LM-Hauptförderrichtung (= x'-Richtung), wobei das LM-Dreiachsmodul zur Handhabung einzelner Paletten ausgebildet ist,
• – eine Mehrzahl von LM-Stapelplätzen für Paletten, die seitlich der horizontalen LM-Modulführung angeordnet sind, wobei jeder LM-Stapelplatz für das LM-Dreiachsmodul zum Ablegen und Aufnehmen einer obersten Palette eines Stapels von Paletten am LM-Stapelplatz zugänglich ist. Durch die Stapelplätze können besonders große Mengen von Paletten verwaltet werden. Bevorzugt werden jeweils Paletten mit gleichen Werkstücken in gleichem Bearbeitungszustand aufeinander gestapelt.

Another, particularly preferred embodiment provides that the at least one logistics module (= LM) comprises:

• An LM three-axis module with a horizontal LM module guide in a LM main conveying direction (= x 'direction), the LM three-axis module being designed for handling individual pallets,
• A plurality of pallet LM stacks positioned lateral to the horizontal LM module guide, each LM stager space being accessible to the LM triax module for depositing and receiving an uppermost pallet of a stack of pallets at the LM stager. The stacking stations can handle particularly large quantities of pallets. In each case, pallets with the same workpieces are preferably stacked on one another in the same processing state.

• – eine LM-Arbeitsstation, insbesondere Montagestation oder Fertigungsstation, an der Werkstücke bearbeitet werden können,
• – mindestens einen LM-Übergabeplatz für eine Palette, der seitlich der horizontalen LM-Modulführung angeordnet ist und der für das LM-Dreiachsmodul zum Ablegen und Aufnehmen einer Palette zugänglich ist,
• – ein LM-Portal, das zur Handhabung von Werkstücken ausgebildet ist, und das Werkstücke von einer Palette am mindestens einen LM-Übergabeplatz zur LM-Arbeitsstation und zurück transportieren kann. Mit dieser Weiterbildung wird eine LM-Arbeitsstation über das Logistikmodul in das verkettete Fertigungssystem eingebunden. Die LM-Arbeitsstation wird über das LM-Dreiachsmodul beschickt, wodurch das Obertransfermodul von Transportvorgängen entlastet wird.

A preferred development of this embodiment provides that at least one LM working device is provided which has

• An LM work station, in particular assembly station or production station, on which workpieces can be processed,
• At least one LM transfer station for a pallet located laterally of the horizontal LM module guide and accessible to the LM triaxial module for depositing and picking up a pallet,
• An LM portal designed to handle workpieces, which can transport workpieces from a pallet at the at least one LM transfer station to the LM workstation and back. With this development, an LM workstation is integrated into the linked production system via the logistics module. The LM workstation is fed via the LM three-axis module, which relieves the transfer module of transport operations.

In a preferred development of this development, the at least one LM-Arbeitseinrichtung at least two LM transfer points. As a result, the LM working device can be decoupled.

Another development of the above embodiment is characterized in that at least part of the LM stacking stations is designed as LM docking stations,
wherein a parking space for a trolley is provided at each LM docking station,
a trolley, which is arranged on the parking space, being accessible to the LM triaxial module for depositing and picking up an uppermost pallet of a stack of pallets on the trolley,
and wherein each LM docking station has an access via which an empty or even a trolley loaded with a stack of pallets can be transported to the parking space and away from the parking space, in particular by manual, ground-level displacement of the trolley. About the trolley pallets or pallet stack can be easily inserted and removed in the linked production system.

at a further preferred embodiment of the above embodiment At least part of the LM stacking stations is formed in shelves, being several of the shelves vertically above each other are arranged. This allows for a given floor area larger number are formed by pallet stacks, for example by the number the different workpieces and take into account their processing status during stacking to be able to.

at another preferred embodiment of the above embodiment run the main conveying direction (x direction) of the upper transfer module and the LM main conveying direction (x'-direction) of the LM three-axis module in parallel. This facilitates the transfer of pallets between upper transfer module and LM three-axle module.

In The scope of the present invention also includes a production plant, comprising several chained invention Manufacturing systems, wherein at least a part of the logistics modules of several Obertransfermodulen accessible in particular being a linear sequence of logistics modules and top transfer modules is provided. With the production plant according to the invention is a highly efficient and flexible workpiece machining possible. By the handover the pallets over the Logistic modules can be used for manual removal and transfer of pallets or pallet stacks for the purpose of handover between individuals Manufacturing systems are avoided.

Further Advantages of the invention will become apparent from the description and the Drawing. Likewise the above-mentioned and still further features according to the invention individually for themselves or to several in any combination use. The embodiments shown and described are not as final enumeration but rather have exemplary character for the description the invention.

drawing and detailed description of the invention

The The invention is illustrated in the drawing and is based on embodiments explained in more detail. It shows:

1 a schematic plan view of an inventive linked production system;

2 a schematic plan view of a manufacturing plant according to the invention, comprising two concatenated manufacturing systems;

3 a schematic oblique view of a crossing point of a horizontal transfer guide and a horizontal gantry guide a processing line in a concatenated manufacturing system according to the invention;

4a a schematic side view of an upper transfer module with an oil pan with closed outlet, for use with the invention;

4b the top transfer module of 4a at an emptying place with opened outlet opening;

4c the top transfer module of 4a in front of an emptying place in schematic supervision.

The 1 shows a schematic plan view of an inventive linked production system with three processing lines 1 . 2 . 3 that have a top transfer module 4 to a logistics module 5 are coupled.

The top transfer module 4 is on a transfer 6 , which runs in a horizontal x-direction, can be moved by means of an NC axis control. The top transfer module 4 can thereby over the entire length of the transfer guide 6 be moved.

The horizontal transfer guide 6 is raised so that the lower edge of the transfer guide 6 at a height of at least 2.0 m above the ground (such as a workshop) is arranged. The transfer guide 6 is at intersections 7 from trans ferführung 6 and portal tours 8th supported by supports (not shown).

The transfer module 4 includes two pallet spaces 4a . 4b on each of which a pallet can be arranged. On a pallet, one or more workpieces can be arranged. The transfer module 4 further comprises two transverse conveyors, not shown (one for each pallet space 4a . 4b ) with which a pallet from a pallet place 4a . 4b to a transfer point 9a . 9b a processing strand 1 . 2 . 3 or to a transit area 10a . 10b of the logistics module 5 can be handed over and vice versa. The transverse conveyors can thus move pallets in the y-direction by a little more than one pallet width. Near the transfer points 9a . 9b of the machining strand 2 There are also two local buffer locations 2a . 2 B designed for individual pallets, those for the top transfer module 4 are accessible in the same way.

Each processing strand 1 . 2 . 3 has two transfer points 9a . 9b , on each of which a pallet can be arranged. The workpieces of a pallet arranged there can be conveyed by means of a portal (portal gripper) 11 to manufacturing stations 12a . 12b be moved. At the production stations 12a . 12b The workpieces are processed, such as milled or turned off. Typically, all manufacturing stations 12a . 12b within a processing strand 1 . 2 . 3 perform the same machining operations, whereas the machining operations differ from machining strand to machining strand. After processing, the workpieces become a pallet on one of the transfer points 9a . 9b brought back. If a large number of production stations are connected to a processing strand (in particular more than two), advantageously several portals (portal gripper) can also be used. 11 on a portal guide 8th be used.

The transfer module 4 receives pallets from and delivers pallets to the logistics module (= LM) 5 , The logistics module 5 is on in 1 lower end of the transfer guide 6 arranged. The logistics module 5 includes a LM triaxial module 13 which can accommodate a single pallet. The LM three-axle module 13 can along an LM module guide 14 in a horizontal x 'direction within the logistics module 5 be moved. Furthermore, the three-axis module 13 move a picked-up pallet in the y'-direction transverse to the x'-direction, and also move a recorded pallet in a vertical z'-direction perpendicular to the drawing plane (ie raise or lower).

To pallets from the logistics module 5 to the top transfer module 4 to hand over, the pallets from the LM triaxial module 13 at the transfer places 10a . 10b stored. Then the upper transfer module stops 4 in front of the transfer places 10a . 10b and takes the pallets by means of the cross conveyor units of the top transfer module 4 on. Conversely, pallets can also be handled by the top transfer module 4 at the transfer places 10a . 10b filed and the LM three-axle module 13 be collected. In the area 15 overlap to the transfer management 6 and the LM module guide 14 , In alternative embodiments of the invention, a direct transfer of pallets between the transfer module 4 and LM triaxial module 13 be set up; This is especially useful for a top transfer module with only one pallet space.

An important purpose of the logistics module 5 is the storage or buffering of pallets. These are pallets in the logistics module 5 stored individually and / or stacked. In the embodiment shown, the pallets are predominantly stacked. These are in particular shelf storage 16 provided, which have a plurality of superimposed shelves (not shown). In each shelf a pallet stack can be formed.

Furthermore, for loading and unloading of pallets LM docking stations 17 intended. At every LM docking station 17 is a parking space 17a for a trolley 17b intended. Is a trolley 17b on a parking space 17a arranged, so can by means of LM three-axis module 13 a pallet stack on the trolley 17b be formed or removed. The LM docking stations 17 are with doors 17c accessible and secured; the doors 17c will only be opened if a trolley 17b brought or removed, for example manually by a worker 17d , A trolley 17b can at a parking space 17a aligned in a manner not shown and reversibly fastened, in particular by jamming. The stacking places on trolley 17b Like any other stacking station, they can also be used to buffer pallets.

At the logistics module 5 is still an LM work facility 18 intended. This LM working device 18 includes an LM workstation 18a on which individual workpieces can be processed, for example, by joining or assembling of individual parts. The workpieces are stored on pallets at two LM transfer points 18b provided, with the transport of the workpieces from the LM transfer points 18b to the LM workstation 18a and back using an LM portal 18c he follows. The LM portal (portal gripper) 18c is on an LM portal tour 18d traversable.

In the context of the invention, only a few machining processes on workpieces are typically carried out by means of LM working devices. In Consideration is given to the execution of rather short and / or frequently occurring work processes at an LM work facility 18 , the short and fast transport path between buffer spaces in the logistics module 5 and the LM work facility 18 to use.

In the logistics module 5 is finally also a functional space 19 set up for a palette. To the functional place 19 belongs to a stationary device 19a for (in this embodiment) measuring workpieces. The device 19a can use a laser system to measure the dimensions of individual workpieces on a pallet at the workstation 19 determine. Palettes on which workpieces identified as faulty are found are sorted out (for example with the LM three-axle module 13 on a trolley 17b transported away) or a post-processing supplied. The device 19a has a carriage that can move in the x direction 19b , on which two pallet spaces are formed. With the sled 19b can each have a pallet on one of the pallet spaces to the function space 19 be moved; At the other pallet place then a pallet change can be made. This will change the measuring time of the device 19 not shortened by a pallet change, but only by the much shorter time for moving the carriage 19b ,

The logistics module 5 is largely of a wall 5a surrounded to protect workers in the area from moving machine parts.

The 2 shows a manufacturing plant according to the invention in a schematic plan view. The production plant shown comprises two linked production systems 21 and 22 that have a common logistics module 23 connected to each other.

The first linked manufacturing system 21 has a first logistics module 24 , a transfer guide 25 with two top transfer modules 25a . 25b , and the common logistics module 23 on. The two top transfer modules 25a . 25b supply the processing lines together 1 . 2 . 3 of the manufacturing system 21 , If pallets between the logistics modules 24 . 23 can be exchanged, a transfer of pallets between the two Obertransfermodulen 25a . 25b advantageous over the local buffer locations 2a . 2 B without processing or pallet supply to the processing lines 1 . 2 . 3 of the manufacturing system 21 to impair.

The second linked manufacturing system 22 includes the common logistics module 23 , the transfer guide 26 with an upper transfer module 26a and processing lines 1 . 2 . 3 , and another logistics module 27 ,

The common logistics module 23 can handle pallets with the top transfer module 25b of the upper manufacturing system 21 , and the upper transfer module 26a from the lower manufacturing system 22 change. This also means a transfer of pallets between the manufacturing systems 21 . 22 possible, whereby a continuous flow of material is made possible.

The manufacturing plant can be expanded according to the invention by, for example, in 2 below the logistics module 27 another transfer system is connected to processing lines, which in turn is connected to another logistics module, and so on.

in the Within the scope of the invention in this way any number of linked manufacturing systems together be tied, and it may be a particular linear material flow from manufacturing system to manufacturing system. Of the Material flow is preferably organized so that a pallet a manufacturing system leaves only when all machining processes of their workpieces in this production system carried out were.

The 3 shows a schematic partial section of a processing strand 1 namely a crossing point 7 a portal tour 8th and a transfer guide 6 , as for example similar to the processing strand 1 in 1 According to the invention is found.

In the transfer guide 6 is an upper transfer module 31 movable in x-direction. This in 3 shown upper transfer module 31 has in contrast to the upper transfer module in 1 only one pallet place.

The top transfer module 31 is currently at a stop 32 of the processing strand 1 between the transfer points 9a . 9b , The transfer places 9a . 9b are in the side of the transfer guide 6 arranged. At the transfer points 9a . 9b as well as on the pallet space of the top transfer module 4 there is one pallet each 30 with four workpieces. These pallets 30 are immediately adjacent in the y-direction and at the same height. For example, at the transfer point 9a arranged pallet, the pallet could by means of a (not shown) cross conveyor unit from the upper transfer module 31 With little effort left to the transfer area 9a be moved.

The transfer guide 6 and thus also the stopping place 32 as well as the transfer places 9a . 9b are raised above the ground, here at a height of about 2.5 m. The transfer is resting 6 on an equally high prop 33 into which an electrical control cabinet 34 is integrated. The elek trical control cabinet 34 houses the power connections and the electronic control for the entire processing line 1 , At the transfer guide 6 is at the left upper edge of the stop 32 a portal carrier (intermediate carrier) 35 trained, on which the portal guidance 8th rests. Below the portal girder 35 is an opening through which the top transfer module 31 can be moved through.

On the portal guide 8th are two portals 11 . 11 ' arranged and movable in the y-direction. The y-direction is perpendicular to the x-direction. Every portal 11 . 11 ' has a vertically movable in the z-direction clamp holder 36 with which a single workpiece from a pallet 30 at one of the transfer points 9a . 9b taken or in a pallet 30 can be stored. The portals 11 . 11 ' can each be assigned to specific processing stations (not shown). Through a larger number of portals 11 . 11 ' the transport capacity for workpieces can be increased, especially with a larger number of processing stations on the processing line 1 , Preferably, the processing stations are left and right of the transfer guide 6 split to a mutual obstruction of the portals 11 . 11 ' to minimize. The portal guide 8th is located at a height of about 3.0 m.

Both under the transfer guide 6 as well as under the portal guidance 8th a worker (not shown) can easily run upright, whereby the linked production system according to the invention is largely accessible.

This facilitates maintenance, reduces the risk of accidents (a worker can not without ladder or the like in moving parts such as the portals 11 . 11 ' grab) and allows further use of the workshop floor.

The 4a to 4c illustrate an embodiment of upper transfer module 31 and an emptying place, here a stopping place 32 to oil spills the transfer guide 6 to minimize.

The 4a shows a schematic side view of an upper transfer module 31 on a transfer guide 6 , The drive and further details of the top transfer module 31 are not shown for simplicity. The top transfer module 31 has an oil pan 41 on, in a executed as a wire rack pallet 30 is arranged. On the pallet 30 are workpieces 42 arranged, which have just been edited. In this processing oil was used, which is still partly on the surface of the workpieces 42 located and through the pallet 30 in the oil pan 41 drips.

When the top transfer module 31 , as in 4a shown, not located at an emptying place (here is the top transfer module 31 still left of the stopping place 32 ), is the oil pan 41 tightly closed, and any drained oil accumulates in the oil pan 41 , One as a stopper 43 trained closure closes an outlet opening 44 at the bottom of the oil pan 41 , The stopper 43 is thereby by its gravity in the funnel-shaped outlet opening 44 pressed, whereby a sufficient sealing effect occurs.

Moves the top transfer module 31 to the stopping place 32 as in 4b shown, so presses a rounded projection 45 who is in the transfer leadership 6 is formed, the plug 43 up. This will cause the outlet opening 44 partially released, and oil can be removed from the oil pan 41 flow out into a collecting well 46 the transfer guide 6 into it. This collecting well 46 has an outflow 47 to an oil collector 48 on, in which the effluent oil is stored.

The oil in the oil sump 48 can then be cleaned and reused or disposed of properly.

Leaves the top transfer module 31 the stopping place 32 , ie the emptying place, so press no projection 45 more the stopper 43 up, and the stopper 43 automatically closes the outlet opening again 44 , Any oil that drips off will be in the sump 41 collected until the next emptying at the next stop 32 ,

As in 4c shown in schematic plan, can lead 45 and collecting well 46 For example, in the middle of a stop 32 between two transfer points 9a . 9b be educated. At the stop 32 holds the top transfer module 31 during the transfer of a pallet to or from a transfer point 9a . 9b on top of what is usually sufficient to get a larger amount of oil dripped off the sump 41 drain.

In summary, the invention describes a linked manufacturing system for the machining of workpieces, wherein the workpieces are arranged on pallets. Several processing lines, each comprising a workpiece portal and several production stations, are connected to a transfer module via pallet transfer stations. The transfer module is designed for handling individual pallets and can be moved linearly along a transfer guide, in particular also to a logistics module. In the logistics module, a plurality of pallets can be temporarily stored, wherein the logistics module has its own transport device for handling individual pallets within the logistics module. With the chained manufacturing system according to the invention can be a large Number of production stations space-saving, flexible and connected by fast transport operations.

Claims (25)

Chained production system for machining workpieces ( 42 ) for transport on pallets ( 30 ), comprising - an upper transfer module ( 4 ; 25a . 25b . 26a ; 31 ) with a horizontal transfer guide ( 6 ; 25 . 26 ) in a main conveying direction (x-direction), wherein the upper transfer module ( 4 ; 25a . 25b . 26a ; 31 ) in the transfer guide ( 6 ; 25 . 26 ) forward and backward on the transfer guide ( 6 ; 25 . 26 ), wherein the upper transfer module ( 4 ; 25a . 25b . 26a ; 31 ) for handling individual pallets ( 30 ), and wherein the transfer guide ( 6 ; 25 . 26 ) is arranged at a height of at least 2.0 m above the ground, - at least one logistics module ( 5 ; 23 . 24 . 27 ), comprising a plurality of buffer spaces for the storage of pallets ( 30 ) and its own local transport facility for handling individual pallets ( 30 ) within the logistics module ( 5 ; 23 . 24 . 27 ), wherein the upper transfer module ( 4 ; 25a . 25b . 26a ; 31 ) individual pallets ( 30 ) to the logistics module ( 5 ; 23 . 24 . 27 ) or can receive from it, - at least one cross conveyor unit for individual pallets ( 30 ), - a plurality of processing strands ( 1 . 2 . 3 ), each having a) several manufacturing stations ( 12a . 12b ), in particular turning or milling stations, on which workpieces ( 42 ), b) at least two transfer points ( 9a . 9b ) for individual pallets ( 30 ), the transfer points ( 9a . 9b ) with respect to the x direction laterally of the transfer guide ( 6 ; 25 . 26 ) and outside the at least one logistics module ( 5 ; 23 . 24 . 27 ), the transfer points ( 9a . 9b ) for the upper transfer module ( 4 . 25a . 25b . 26a ; 31 ) by means of the at least one transverse conveyor unit for depositing and picking up a pallet ( 30 ), the transfer points ( 9a . 9b ) are located at a height of at least 2.0 m above the ground, c) a portal ( 11 . 11 ' ), which is used for handling workpieces ( 42 ) is formed, and a horizontal portal guide ( 8th ), the transfer guide ( 6 ; 25 . 26 ), whereby the portal ( 11 . 11 ' ) Workpieces ( 42 ) of pallets ( 30 ) at the transfer points ( 9a . 9b ) to the manufacturing stations ( 12a . 12b ) and back, and where the portal ( 11 . 11 ' ) is arranged at a height of at least 2.2 m above the ground. A linked production system according to claim 1, characterized in that on each processing strand ( 1 . 2 . 3 ) at least one local cross conveyor unit is formed, the individual pallets ( 30 ) between the upper transfer module ( 4 ; 25a . 25b . 26a ; 31 ) and the transfer points ( 9a . 9b ) of the processing strand ( 1 . 2 . 3 ) can pass. A linked production system according to claim 1, characterized in that the at least one cross conveyor unit on the top transfer module ( 4 ; 25a . 25b . 26a ; 31 ), wherein the upper transfer module ( 4 ; 25a . 25b . 26a ; 31 ) can serve a second, horizontal conveying direction (y-direction) transversely to the x-direction. Interlinked manufacturing system according to one of the preceding claims, characterized in that local buffer locations ( 2a . 2 B ) for individual pallets ( 30 ) are provided, which laterally of the transfer guide ( 6 ; 25 . 26 ) and for storing and picking up a pallet ( 30 ) for the upper transfer module ( 4 ; 25a . 25b . 26a ; 31 ) and that the local buffer locations ( 2a . 2 B ) are arranged at a height of at least 2.0 m above the ground. A linked manufacturing system according to claim 4, characterized in that the local buffer locations ( 2a . 2 B ) in the area of transfer points ( 9a . 9b ) at least one processing strand ( 1 . 2 . 3 ) are provided. Interlinked production system according to one of the preceding claims, characterized in that the transfer points ( 9a . 9b ) of the processing strands ( 1 . 2 . 3 ) are provided with a transport device, by means of a pallet ( 30 ) placed on a transfer point ( 9a . 9b ) is lowered to the ground and also a pallet ( 30 ) from the ground to the transfer point ( 9a . 9b ) can be lifted up. Interlinked production system according to one of the preceding claims, characterized in that all production stations ( 12a . 12b ) of a processing strand ( 1 . 2 . 3 ) are adapted to identical machining operations on the workpieces ( 42 ). Interlinked production system according to one of the preceding claims, characterized in that the gantry guides ( 8th ) of the portals ( 11 . 11 ' ) of the processing strands ( 1 . 2 . 3 ) above the transfer guide ( 6 ; 25 . 26 ). Interlinked production system according to one of the preceding claims, characterized in that at the intersections ( 7 ) of transfer ( 6 ; 25 . 26 ) and portal tours ( 8th ) each a prop ( 33 ) is formed, which a portal carrier ( 35 ) of the portal guide ( 8th ), the transfer ( 6 ; 25 . 26 ) and the transfer points ( 9a . 9b ), in particular wherein in the support ( 33 ) a control cabinet ( 34 ) for the portal ( 11 ; 11 ' ) is integrated. Linked production system according to one of the preceding claims, characterized in that the upper transfer module ( 4 ; 25a . 25b . 26a ; 31 ) an oil pan ( 41 ) having. Chained manufacturing system according to claim 10, characterized in that the oil sump ( 41 ) a lower outlet opening ( 44 ) with a closure, wherein the closure is biased into a closed position, in particular by gravity or spring force, and that in the linked production system emptying spaces for the upper transfer module ( 4 ; 25a . 25b . 26a ; 31 ) are provided, at which opening elements, in particular wedges or projections ( 45 ), which are the closure of the upper transfer module ( 4 ; 25a . 25b . 26a ; 31 ) automatically open at an emptying place, in particular with the emptying places at holding places ( 32 ) of the top transfer module ( 4 ; 25a . 25b . 26a ; 31 ) next to the transfer points ( 9a . 9b ) are formed. Linked production system according to one of the preceding claims, characterized in that the upper transfer module ( 4 ) two pallet spaces ( 4a . 4b ), which are arranged side by side, in particular wherein the two pallet spaces ( 4a . 4b ) are arranged one behind the other in the x direction. A linked production system according to claim 12, characterized in that at the top transfer module ( 4 ) two transverse conveyor units are formed, each transverse conveyor unit having a pallet space ( 4a . 4b ) of the top transfer module ( 4 ). Interlinked production system according to one of the preceding claims, characterized in that the transfer guide ( 6 ; 25 . 26 ), the transfer points ( 9a . 9b ), the portal ( 11 . 11 ' ) and possibly local buffer locations ( 2a . 2 B ) are arranged at a height of at least 2.5 m above the ground. Chained manufacturing system according to one of the preceding claims, characterized in that the at least one logistics module ( 5 ; 23 . 24 . 27 ) at one end of the transfer guide ( 6 ; 25 . 26 ) is arranged, in particular that at the two ends of the transfer guide ( 25 . 26 ) a logistics module ( 23 . 24 . 27 ) is arranged. Linked production system according to one of the preceding claims, characterized in that in the at least one logistics module ( 5 ; 23 . 24 . 27 ) at least one functional location ( 19 ) for a pallet ( 30 ) is set up at the at least one functional location ( 19 ) a device ( 19a ) for carrying out work on workpieces ( 42 ) of a pallet ( 30 ) at the functional location ( 19 ) is arranged, is provided. Interlinked manufacturing system according to claim 16, characterized in that the device ( 19a ) for deburring workpieces, or for cleaning or washing of workpieces, or for measuring workpieces, or for screwing workpieces is formed. Chained manufacturing system according to one of the preceding claims, characterized in that the at least one logistics module ( 5 ; 23 . 24 . 27 ) is designed as an automation cell with which on any pallets ( 30 ) stored in the automation cell can be accessed. Linked production system according to one of the preceding claims, characterized in that the at least one logistics module (= LM) ( 5 ; 23 . 24 . 27 ) comprises: - a LM three-axis module ( 13 ) with a horizontal LM module guide ( 14 ) in an LM main conveying direction (= x 'direction), wherein the LM three-axis module ( 13 ) for handling individual pallets ( 30 ), - a plurality of LM stacks for pallets ( 30 ), the side of the horizontal LM module guide ( 14 ), each LM stack space for the LM triaxial module ( 13 ) for filing and recording a topmost palette ( 30 ) of a stack of pallets is accessible at the LM stacking station. A linked manufacturing system according to claim 19, characterized in that at least one LM working device ( 18 ), which comprises - an LM workstation ( 18a ), in particular assembly station or manufacturing station, on the workpieces ( 42 ), - at least one LM transfer point ( 18b ) for a pallet ( 30 ), the side of the horizontal LM module guide ( 14 ) and that for the LM three-axis module ( 13 ) for storing and picking up a pallet ( 30 ), - an LM portal ( 18c ), which is used for handling workpieces ( 42 ) is formed, and the workpieces ( 42 ) from a pallet ( 30 ) at least one LM transfer point ( 18b ) to the LM workstation ( 18a ) and back transport. A linked production system according to claim 20, characterized in that the at least one LM working device ( 18 ) at least two LM transfer points ( 18b ) having. A linked production system according to any one of claims 19 to 21, characterized in that at least a part of the LM stacking stations as LM docking stations ( 17 ) is formed, wherein at each LM docking station ( 17 ) a parking space ( 17a ) for a trolley ( 17b ) is provided, wherein a trolley ( 17b ), on the pitch ( 17a ) for the LM three-axis module ( 13 ) for depositing and picking up an uppermost pallet of a stack of pallets on the trolley ( 17b ) and each LM docking station ( 17 ) has an access via which an empty or even a trolley loaded with a stack of pallets ( 17b ) to the pitch ( 17a ) to and from the pitch ( 17a ) can be transported away, in particular by manual, ground-level displacement of the trolley ( 17b ). A linked manufacturing system according to any one of claims 19 to 22, characterized in that at least part of the LM stacking stations formed in shelves is, taking several of the shelves vertically above each other are arranged. A linked production system according to any one of claims 19 to 23, characterized in that the main conveying direction (x-direction) of the upper transfer module ( 4 ; 25a . 25b . 26a ; 31 ) and the LM main conveying direction (x 'direction) of the LM three-axis module ( 13 ) run parallel. Manufacturing plant comprising several linked manufacturing systems ( 21 . 22 ) according to one of claims 1 to 24, wherein at least a part of the logistics modules ( 23 ) of several upper transfer modules ( 25b . 26a ), in particular where a linear sequence of logistics modules ( 24 . 23 . 27 ) and top transfer modules ( 25a . 25b . 26a ) is provided.