WO2009065788A1

WO2009065788A1 - Facility for producing a lightweight construction structure

Info

Publication number: WO2009065788A1
Application number: PCT/EP2008/065615
Authority: WO
Inventors: Hans-Jürgen Kern; Michael Sauer; Olaf Ludwig
Original assignee: Kraussmaffei Technologies Gmbh; Renkl, Josef
Priority date: 2007-11-24
Filing date: 2008-11-14
Publication date: 2009-05-28
Also published as: DE102007056690B4; DE102007056690A1

Abstract

The present invention relates to a facility for producing a lightweight construction structure having a central rotating unit (18), which has at least three holding units (28), which are situated spaced from one another at an angle in the peripheral direction, for receiving the structure (36), and a drive (22) for rotating the rotating unit (18) in the peripheral direction, an insertion and a removal station (12) for inserting a semifinished product (90) for the lightweight construction structure and for removing the produced lightweight construction structure, a coating station (14) for applying a coating layer (92) onto at least one surface of the semifinished product (90), and a pressing station (16) for pressing the coated semifinished product. All stations (12, 14, 16) are situated around the rotating unit (18) on the circumference and a robot device (50) having a robot arm is provided in the coating station (14), a material discharge device (52) being provided on said robot arm for applying the coating structure (92).

Description

description

title

Plant for the production of a lightweight structure

The present invention relates to a plant for producing a lightweight structure.

A large number of installations are already known in which different work steps are carried out successively in different stations and a product produced in this process is removed at the end of the production process of the installation. In this regard, reference is made to DE 35 23 239 C2, in which a turntable is provided with recordings for pinion shafts around which various processing stations are arranged.

In the present case, it is a question of producing a lightweight structure in which a semi-finished product is used as the starting material, which is to be coated and pressed. These steps were often done manually, so labor costs are excessively high.

Two line systems for the production of lightweight panels are described in the documents DE 10 2005 057 550 and DE 103 13 055 B4, in which along a linear conveyor line in each case a bottom, an interposed honeycomb and an upper side are joined together.

In DE 1 584 648 a machine for the production of lightweight panels is described in which stiffened from several superimposed, cavities forming layers of wavy veils, spun webs or webs with a mesh image more or less leaving liable liquid and then into a Cement solution be dipped.

DE 39 42 600 describes a flexible manufacturing and / or assembly cell with automatic conversion production-specific facilities. A variety of them are included in Speicherreinhchtungen and can be selected by means of handling and coupling stations. If a carrier plate is to be retracted into the working area of an assembly or production robot, a transport system is used.

Object of the present invention is to provide a compact and cost-effective system for producing a lightweight structure.

This object is achieved by the features specified in claim 1.

Accordingly, a rotating device is used as the central structure, which comprises at least three circumferentially spaced, in particular angularly evenly spaced, mutually arranged holding devices. The rotating device can be moved by means of a drive in the circumferential direction.

The holding devices themselves may not have their own drive in a simple embodiment. Alternatively, however, a separate drive, for example for rotation, gripping or opening and closing movements can also be provided for each holding device.

In the circumferential direction about the rotating means are arranged on the one hand at least one loading and a removal station, these two stations may be integrally formed in a station or separately in two stations, and on the other a coating station and a pressing station.

All stations are arranged circumferentially about the rotating device, preferably equidistant with the same angular distance from each other. In addition, a robotic device is provided in the coating station, to which a material discharge device is attached, with which the coating structure, for example the material BayPreg from Bayer, can be applied.

According to a further, particularly preferred embodiment of the present invention, the holding devices themselves may be formed only passively operable. That is, it is an external device, for example, a robot device for Operation of the holding devices provided. In such an embodiment, the holding device can be pivoted or rotated without its own drive. The drive is equally supplied externally, namely by means of the robotic device.

According to another embodiment, however, an internal drive in the rotating device could also be provided for the holding devices. With such a separate drive can also rotation, opening and closing or other operations are performed.

According to a preferred embodiment, the holding means are each rotatably mounted about an axis which lies in the plane of rotation of the direction of rotation and extends radially away from the plane of rotation. With this arrangement, it is possible to rotate the semi-finished product received in the holding device, for example by 180 °, so that a coating carried out from above is possible on both sides.

Of course, other stations, such as a heating furnace or a device for applying a further structure in Umfangsgehchtung be arranged around the rotating device. In this case, all stations are preferably equally angularly spaced, so that processing steps can be performed at all stations in the same cycle. For this purpose, it is also advantageous if the number of holding devices corresponds to the number of stations.

A concrete embodiment of the present invention will be explained below with reference to the accompanying drawings. The drawings show in

FIG. 1 shows a schematic plan view of a system according to the invention,

FIG. 2 shows a schematic side view of the installation, as shown in FIG. 1,

FIGS. 3a and 3b show the press station from the system shown in FIG. 1 in the closed and opened state, Figure 4 shows a detail of the system shown in Figure 1 with the

pressing station,

Figure 5 is a schematic detail view to an enlarged extent a

Holding device for receiving the semi-finished product,

Figure 6a is a schematic detail view of one in an arm of

Plate carrier arranged semi-finished product and

Figure 6b is a representation as in Figure 6a, wherein now the central part of the coated semi-finished product is pressed by means of the pressing device.

In the present concrete embodiment, a plant for producing a lightweight structure is shown, which is generally described below, with details of the system, which are immaterial to understanding, will not be discussed in more detail.

The present system 10 comprises - arranged in a central manner - a central pivoting guide 18 which is rotatably mounted on a base 20 and is rotationally driven by a drive motor 22. The central pivoting link 18 in the present case has three equidistant angularly spaced arms 24 in the circumferential direction, which have freely rotatably supported shafts in bearings. On the radially outer end side of these waves mounting flanges are provided, on each of which a plate carrier 28 is arranged, as shown in detail in Figure 5. Each plate carrier 28 comprises a carrier beam 32, to the central region of which a fastening flange 34 is welded. At the two lateral ends of the support beam 32 two parallel aligned, forming a kind of fork support arms 30 are provided.

The support arms 30 have mutually facing grooves, in which a semi-finished product can be inserted, as can be seen in Figure 5. An inserted semi-finished product is held between the two support arms 30 in the grooves and thus supported by the plate support 28. The plate carrier 28 is a total of about the connection to the shaft of the arms 24 rotatable about an axis which lies in the plane of rotation of the central pivoting gate 18 and extends radially outward.

In the present case, three plate carriers 28 are arranged on the central rotating link 18, which at the same time can accommodate the structure, starting from the semi-finished product to the finished lightweight board.

Angularly equidistantly spaced around the central rotating gate 18, an insertion and removal station 12, a coating station 14 and a pressing station 16 are arranged.

At the loading and unloading station 12, an operator 42 can remove a finished product, ie a lightweight board, from the plate carrier 28 and then insert a semi-finished product 90 into the empty plate carrier 28. To facilitate the removal and insertion process, a table 40 is provided which, by its orientation, suitably permits removal and delivery of the respective structure from or to the plate support 28.

At the coating station 14, a robot 50 is centrally arranged with a robot arm, which can move as a 6-axis robot depending on programming within the specified limits. At the front end of the robot arm, a spray head 52 is attached, which is connected via a connecting line 54 to a supply means 56 for the coating material. The robotic arm is capable of guiding the spray head in preprogrammed fashion over the surface of the disc carrier inserted into the station with the semi-finished product and providing the semi-finished product with a coating.

Moreover, a bolt is provided in the region of the spray head on the robot arm, which can be inserted into a correspondingly formed device in the end-face radially outer region of the plate carrier. By the corresponding latching of the robot arm with this bolt in the support arm and a corresponding circular movement of the robot arm of the plate support 28 can be rotated together with the product received therein by 180 °. In the present case is a turn around 180 ° of particular interest because it can be coated on the other side of the semi-finished product.

Around the coating station 14, a housing is arranged, from which air is sucked off via a suction device 60, so that the coating material discharged by means of a spraying process preferably does not reach the environment.

Another station is the pressing station 16, in which a press 70 is provided with a press base 72 and press upper frame 74. The two frames 72 and 74 are connected to each other via a hinge 80, so that they are pivotable to each other. The pivoting operation is achieved by means of a piston-cylinder drive 82 which is arranged on the rear lugs of the two racks 72 and 74. The subframe also has a lower pressing plate 76 and the upper frame has an upper pressing plate 78.

In Figure 3a, the press 70 is shown in the closed state, wherein the two racks 72 and 74 are locked against each other. In the position shown in Figure 3b, the press 70 is shown in an open state in which the plate support 28 can be freely pivoted in the direction of rotation in or out of the press.

Of course, other stations such as a heating furnace or another station for coating, for example, for painting the structure may be provided (not shown here). In this case, all stations should also be arranged equidistant in the circumferential direction about the central pivoting gate 18, wherein a number of stations corresponding number of plate supports is provided. This has the advantage that at each station at the same time a respective step can be performed.

Hereinafter, the operation of the present system will be explained in general. In the first step, the operator 42 removes a lightweight panel made in the plant from the plate carrier in the position of the loading and unloading station 12. Thus, the plate carrier 28 is ready for receiving a new H albfertig product. The new semi-finished product consists of a honeycomb carrier structure with a fleece on both sides is arranged. The operator 42 places this semi-finished product in the plate carrier 28.

Subsequently, the central rotating link 18 is pivoted by operation of the drive motor 22 by 120 ° clockwise (Figure 1). The station with the semi-finished product has now arrived in the area of the coating station 14. Here, the robotic arm 50 begins its work and sprays the top of the semi-finished product along a predetermined line with the coating material. If the process is completed, the bolt hooks in the region of the spray head 52 in the frontal recess of the plate support 28 and moves it by a pivoting movement through 180 ° about its radially outwardly extending axis. Now, the first coated surface on the bottom, and the not yet coated top is again provided in the next step along the predetermined line with the coating material.

After this step, the central rotating link 18 is again moved by 120 ° clockwise (Figure 1), wherein the pressing station is in an open state (see Figure 3b). In this state, the now coated semi-finished product can be introduced into the open pressing station. Subsequently, the upper frame 74 is pivoted by acting on the piston-cylinder drive 82 down, and the two frames 72 and 74 are locked together. The pressing process can now be carried out with a separate drive, wherein the two pressing plates 76 and 78 are moved toward one another, as can be seen from FIG. 6 in the detailed detail. As a result, the area of the coated semifinished product between the two support arms 30 and the support cross member 32 is pressed, resulting in a special strength and thus to the desired lightweight structure. Heating can take place simultaneously with the pressing, so that the hardening process is accelerated.

After the pressing operation, the two pressing plates 76 and 78 are moved apart again, the two frames 72 and 74 unlocked and the upper frame 74 pivoted upwards away. Now, the central rotating gate 18 can be pivoted again by 120 ° clockwise (Figure 1), so that now an entire cycle is completed and the lightweight board thus produced at the insertion and Removal position can be removed again. This lightweight plate has a compressed honeycomb coating structure 90 'and a compressed coating 92'.

An advantage of the present embodiment is that at the same time a work step can be performed at all stations and the rotating link is designed very simple and therefore cost-effective. In particular, the individual support arms need not be equipped with separate drives. Rather, one uses, so to speak, as the "external drive" the robot arm 50 of the coating position.

LIST OF REFERENCE NUMBERS

Plant for the production of a lightweight board

Loading and unloading station

coating station

pressing station

Central rotation

base

rotary drive

poor

Bearings for the poor

plate carrier

support arms

support beam

mounting flange

lightweight panel

Loading and unloading table

operator

robot

spray nozzle

connecting line

Feeder for coating matehal

casing

suction

Press

undercarriage

upper frame

Lower press plate

Upper press plate

joint

Piston-cylinder drive

Honeycomb support structure

Pressed honeycomb carrier structure

Baypreg coating 92 'Pressed coating

Claims

claims

1. plant for the production of a lightweight structure with

- A central rotating means (18) having at least three circumferentially spaced angularly spaced holding means (28) for receiving the structure (36) and a drive (22) for rotating the rotating means (18) in the circumferential direction,

a loading and unloading station (12) for loading a semi-finished product (90) for the lightweight structure and for removing the manufactured lightweight structure,

- A coating station (14) for applying a coating layer (92) on at least one surface of the semi-finished product (90) and

a press station (16) with a press comprising a press underframe with a lower press plate and a press upper frame with an upper press plate for pressing the coated semi-finished product, wherein all stations (12, 14, 16) are arranged circumferentially around the rotary device (18) and in the coating station (14) is provided with a robot device (50) with a robot arm on which a matehal discharge device (52) for applying the coating structure (92) is provided.

2. Plant according to claim 1, characterized in that the robot device (50) for actuating the holding device (28) is formed.

3. Installation according to claim 1 or 2, characterized in that the holding device (28) is rotatably mounted about an axis which lies in the plane of rotation of the rotary device (18) and extends radially away from the rotary device (18).

4. Plant according to claim 3, characterized in that for actuating the holding devices separate drives in the Rotary device are provided.

5. Installation according to one of the preceding claims, characterized in that in the region of the loading and / or unloading station (12) has a support structure, in particular a table (40), is provided which the insertion and removal of the structure (90, 90 ') into and out of the holding device (28).

6. Installation according to one of the preceding claims, characterized in that further stations are arranged in Umfangsshchtung to the rotating means (18), wherein all stations are angularly equidistant.

7. Installation according to one of the preceding claims, characterized in that the number of holding devices (28) with the number of stations (12, 14, 16) match.

8. Installation according to claim 7, characterized in that the holding means (28) at an equal angular distance from each other are spaced apart as the stations (12, 14, 14).