WO2020141119A1

WO2020141119A1 - Laying cassette for structural steel

Info

Publication number: WO2020141119A1
Application number: PCT/EP2019/086758
Authority: WO
Inventors: Jörg LIPPERT; Ralph Machauer
Original assignee: Lippert Joerg; Ralph Machauer
Priority date: 2018-12-31
Filing date: 2019-12-20
Publication date: 2020-07-09
Also published as: DE202018005924U1

Abstract

The invention relates to a laying cassette (14) for transporting straight wire rods (5), comprising at least one bearing (2) for supporting the wire rod (5), wherein a number of cassette shafts (14.3) arranged one behind the other in the Y direction are provided, wherein the respective cassette shaft (14.3) is delimited in the Y direction by two shaft walls (1) running in the vertical Z direction and has, between the two shaft walls (1), a feed opening (14.1) into which the respective wire rod (5) can be inserted from a horizontal transporting direction downwards in the Z direction into the respective cassette shaft (14.3) and can be placed onto the bearing (2), wherein a discharge opening (14.2) is provided, by way of which the wire rod (5) can be transferred downwards in the vertical Z direction to further-processing machine and plant parts, and therefore the bearing (2) is formed by a guide plate (2), which is positioned in a placed-on first position L1 in relation to a shaft wall formed as a baffle plate (1), and therefore the wire rod (5) can, under the force of its weight, be made to lie against the baffle plate (1) by sliding over the guide plate (2), and a bearing (2) for the wire rod (5) is formed by the guide plate (2) and the baffle plate (1), wherein the guide plate (2) can be brought into a second position L2, and the guide plate (2) in the position L2 exposes the discharge opening (14.2) for the wire rod (5) downwards in the Z direction, wherein the wire rod (5) can be made to lie against the baffle plate (1) until it leaves the cassette shaft (14.3).

Description

Laying cassette for structural steel

The invention relates to a laying cassette for transporting wire rods with at least one bearing for supporting the wire rod, several cassette shafts arranged one behind the other in the Y direction being provided, the respective cassette shaft being delimited in the Y direction by two shaft walls running in the vertical Z direction and has an insertion opening between the two shaft walls into which the respective wire rod can be inserted from the horizontal transport direction downward in the Z direction into the respective cassette shaft and placed on the bearing, an output opening being provided through which the wire rod can be moved vertically Z direction downwards can be transferred to further processing machine and plant parts.

The invention also relates to a method for loading further processing machine and plant parts, such as concrete pallets or mat welding systems with wire rods, in which the respective wire rod is inserted from above into an insertion opening of a laying cassette and placed on a bearing inside the laying cassette, the each wire rod is passed through an output opening in the vertical transport direction from the installation cassette to further processing machine and system parts. In precast concrete factories, at structural steel mesh manufacturers and related companies, reinforcing steel wire is unwound from the coil, straightened and forwarded to concrete pallets, mesh welding systems, etc.

In the current transport of wire rods to these downstream, partly further processing parts of the system, conveying elements such as chain conveyors, belt systems, etc. are used. The goods are taken over in a horizontal plane.

The stored bars are taken over by means of robot gripper systems or similar manipulators or holding systems, which take over single or multiple bars and transfer them. Due to this The material to be laid must be removed and transported upwards. The travels of these devices are equipped with at least 2 axes (Y, Z) often with 3 axes (X, Y and Z). Accordingly, the mechanical structure is also complicated and expensive in terms of laying accuracy. The controller connection and its complexity should not be underestimated. The installation takes place in "real time", ie according to the material requirements of the subsequent systems. Pre-production with a buffer station is not possible.

A laying device for positioning reinforcing bars is already known from DE 295 02 41 U1. The laying device has a positioning unit and a further device via which the bars are positioned in the X and Y directions. The bars are then transported to the concrete form via a gripper unit.

From DE 39 32 810 C2 a laying cassette for the transport of wire rods is known. This has a plurality of cassette shafts arranged one behind the other with a horizontally oriented floor which can be pivoted to dispense the wire rods, so that the wire rods slide off the floor if there is sufficient steepness. To ensure the pivoting movement of the floor, there must be a sufficient distance to the transfer surface or the concrete form. This drop height, together with the speed caused by the sliding movement of the wire rods on the floor, leads to a dynamic impact that does not allow precise positioning of the wire rods. In the case of straight bars, the sliding movement of the wire rods creates a rotational movement which adds to the impact dynamics and completely prevents precise positioning of the wire rods.

The invention is based on the object of designing and arranging a laying device in such a way that precise positioning is ensured when the wire rods are transferred.

The object is achieved according to the invention in that the bearing is formed by a baffle plate which is configured as a baffle plate The shaft wall is positioned in an employed first position L1, so that the wire rod can be slid against the baffle plate due to its weight due to its weight and a bearing for the wire rod is formed by the baffle plate and the baffle plate, the baffle plate being able to be brought into a second position L2 and the baffle in position L2 clears the discharge opening for the wire rod downwards in the Z direction, the wire rod being able to be placed against the baffle plate until it leaves the cassette shaft.

The guide plate and the baffle plate set in the first position L1 form a V-shaped bearing for the wire rod. The V-shape with an opening angle of less than 180 °, preferably less than 90 °, ensures that the wire rod always lies against the baffle plate and the guide plate.

According to the invention, the object is also achieved in that a baffle plate and a baffle plate positioned opposite the baffle plate are provided and the baffle plate is displaced or pivoted to uncover the discharge opening, so that the discharge opening is enlarged to a dimension F.

This ensures that the wire rod within the cassette or the cassette shaft has a defined position at the lateral height of the baffle plate with respect to the Y direction. This enables a precise downward transfer. With the pivoting movement of the guide plate, the wire rod slides further downward in this laterally defined position along the baffle plate to the end of the baffle plate or to the dispensing opening. The lower end of the cassette or the discharge opening can thus be positioned a few millimeters above the transfer surface or the concrete form, so that a low fall height of a few millimeters is ensured. A rotational movement of the wire rods is also ruled out, since the respective wire rod slides along the guide plate and on the baffle plate, so that the peripheral forces that arise cancel each other out.

The wire rods moved in the direction of the X axis can also be taken over horizontally and passed on vertically. Wire rods with an offset can also be transferred in a defined manner, because the bearing, which is V-shaped in cross section, ensures defined storage and delivery of the wire rod in the Y direction. The plate to be produced is laterally limited by so-called transverse racks. These have recesses open at the top in the manner of a comb or tooth pattern. The respective wire rod can be transferred so precisely that the end of the wire rod falls into the upwardly open recesses of the transverse switch.

For this purpose, it can also be advantageous if a frame lying in an XY plane is provided, in which a plurality of ropes or wires are tensioned in the X direction, two rope levels being provided one above the other in the Z direction, two being one above the other in the Z direction horizontal ropes of the respective rope level form a rope pair, the rope pairs being arranged in the Y direction in a grid dimension b within the frame. Due to the construction with the cable system and the associated baffle plates and guide plates, the grid dimensions in the Y-axis can be less than 40 mm, whereby this lightweight construction allows laying lengths of rod material greater than 10 meters to be achieved.

It can also be advantageous if the baffle plate oriented in the Z direction is attached to the respective pair of cables. The baffle plate can be attached to the respective rope by hanging, clipping or threading.

It can advantageously be provided that the guide plate is pivotally attached to the respective rope of the upper rope level. The ropes on the upper rope level therefore serve as holders for the baffle plate and the baffle plate.

The advantageous weight optimization is achieved by a laying cassette for transporting straight wire rods with at least one bearing for laying the wire rod, several cassette shafts arranged one behind the other in the Y direction being provided, the respective cassette shaft in the Y direction by two in the vertical Z direction running shaft walls is limited and has an insertion opening between the two shaft walls into which the respective wire rod from the horizontal transport direction down into The Z direction can be inserted into the respective cassette shaft and placed on the bearing, an output opening being provided through which the wire rod can be transferred downward in the vertical Z direction to further processing machine and system parts, one lying in an XY plane A frame is provided in which several ropes or wires are tensioned in the X direction, two rope levels are provided one above the other in the Z direction, two ropes of the respective rope level lying one above the other in the Z direction form a rope pair, the rope pairs in Y- Direction are arranged in a grid dimension b within the frame and the baffle plate aligned in the Z direction is fastened to the respective pair of cables and the guide plate is pivotably fastened to the respective cable of the upper cable level.

It can be advantageous both in connection with the wire rod bearing according to the main claim and in relation to the aforementioned advantageous weight optimization if a plurality of baffle plates are provided on a pair of cables, which are arranged at a distance k1 from one another in the Z direction and that on a cable the Several guide plates are provided at the upper rope level and are arranged at a distance k2 from one another in the Z direction. This ensures a very light construction that is sufficiently stable to hold the wire rods in the warehouse and to deliver them precisely.

It can be of particular importance both in connection with the wire rod bearing in accordance with the main claim and in relation to the aforementioned advantageous weight optimization if a control cable is provided which is tensioned in the frame in the X direction, the control cable being displaceable in the Y direction is stored. By using a control cable, a light construction with little mass can be ensured overall.

In connection with the design and arrangement according to the invention, it can be advantageous if two control shafts extending in the Y direction are provided with a plurality of recesses extending in the X direction, the respective control cable being guided at the end through the respective recesses of the respective control shafts, whereby through an offset of the control shafts directed in the Y direction for all control cables a corresponding offset in Y- Direction within the frame is executable. Thus, by means of a pair of control shafts to be provided at the end, all guide plates can be operated or released simultaneously.

It can also be advantageous if the guide plate has a cable receptacle, by means of which at least one form fit acting in a Y direction between the control cable and the guide plate is ensured. In the locking position L1, the positive connection Y direction is necessary in order to hold the locking position L1 against the weight of the wire rod. No positive locking with the control cable is required to move the baffle to position L2. The force for moving or pivoting the light sheet is achieved by the weight of the wire rod to be released.

It can also be advantageous if the frame has a main and a side drive. This ensures optimal handling between the individual positions B-E. By using the side drive, which runs in a U-shaped guide rail, the installation cassette can be moved out of the guide rail up to half the width h and accepted there. This avoids a collision during the lifting process with the horizontally moving installation cassettes. Since the installation cassettes do not have their own energy supply, the horizontal movement is achieved by means of friction wheel drives.

In addition, it can be advantageous if the baffle plates are at a distance k1 from one another in the Z direction, with 60 cm <= K1 <= 100 cm or 30 cm <= K1 <= 60 cm or 10 cm <= K1 <= 30 cm and / or if the guide plates are at a distance k2 from one another in the Z direction, with 60 cm <= K1 <= 100 cm or 30 cm <= K1 <= 60 cm or 10 cm <= K1 <= 30 cm. This means that the minimum wire length to be used can be taken into account on the one hand and weight optimization on the other hand.

In addition, it can be advantageous if the baffle plates and / or the guide plates are detachably attached or suspended from the respective rope. So this can can be installed and / or removed depending on the application, depending on the wire rod length to be processed. Wear parts can also be used.

Furthermore, a system consisting of several laying cassettes can be advantageous if the laying cassettes are used in the circulation system, so that at least two laying cassettes are moved between the following stations: station B, the starting position for loading

Station C, buffer station for a loaded cassette

Station D, transfer station

Station E, buffer station for empty cassettes. It can also be advantageous in the method if the wire rod is guided along the baffle plate during the displacement or pivoting movement of the guide plate until it falls out of the dispensing opening.

Further advantages and details of the invention are explained in the patent claims and in the description and shown in the figures. 1 shows a plan view of the laying cassette;

FIG. 2 shows a circulation scheme for installation cassettes;

Figure 3 shows an arrangement of baffle and baffle;

Figure 4 shows an arrangement with the delivery opening closed;

Figure 5 shows an arrangement with the dispensing opening open;

Figure 6 is a sectional view of the cassette trays;

Figure 7 is a sectional view of the cable assembly;

Figure 8 is an illustration of the cable holder and the cable shaft;

FIG. 9 shows the cable receptacles with chassis supports;

Figure 10 Installation examples. As shown in FIG. 1, the installation cassette is custom-made, for example the dimension of the slab ceilings a = 8000 mm (X-axis) and h = 2500 mm (Y-axis) with a grid dimension of b = 50 mm. 1 and 3, the installation cassette 14 has a frame construction consisting of longitudinal members 11.1 and cross members 11.2. The compartments or cassette shafts 14.3 are formed by a rope system consisting of ropes 3, two rope levels 3.1, 3.2 being provided one above the other in the Z direction. Two cables 3 of the respective cable level 3.1, 3.2 lying one above the other in the Z direction form a cable pair 3.3 to which the shaft wall or the respective baffle plate 1 is fastened. The frame or the chassis support 11 have a main and a side drive 12, 13.

8-9, the ropes 3 are pretensioned by means of a screw and a spring assembly 6 in order to achieve an adjustable rigidity or tension. The impact plates 1 and also the guide plates 2 are attached to the cables 3 according to FIGS. 3-6. The respective guide plate 2 is articulated on the cable 3 of the cable levels 3.1 and comes to bear against the cable 3 of the cable levels 3.2. The angular position of the guide plate 2 is held or guided by means of a control cable 4 which is linearly movable in the Y axis and a cable holder 2.1. This movable control cable 4 is also preloaded with a spring assembly 6 on a pair of cable shafts 7 according to FIGS. 8-9. The cable shafts 7 serve as control shafts for the control cable 4.

7, a plurality of baffle plates 1 of width p1 are provided on a pair of cables 3.3, which are arranged at a distance k1 from one another in the Z direction. The same applies to the guide plates 2 of a rope 3 of the first rope level 3.1, which are arranged at a distance k2 from one another and have a width p2. The width p1, p2 and / or the distance k1, k2 can be designed differently for baffle plates 1 and / or baffle plates 2. The distance k1 between the baffle plates 1 and the distance k2 between the guide plates 2 in the Z direction is approximately 45 cm. The baffle plates 1 and also the guide plates 2 are detachably attached to the respective rope, preferably hung in via an eyelet or a clip holder.

The thrown-in wire rod falls against the baffle plate 1. The employed guide plate 2 closes the discharge opening 14.2. To release the delivery opening 14.2, the cable shafts 7 are mounted linearly in the Y direction via prism rollers 8 and moved synchronously. The prism rollers 8 are supported by a bock 9 attached to the frame 11. The cable shafts 7 are moved by means of two synchronously running external cylinders.

According to FIG. 7, the width p of the baffle and guide plates 1, 2 and the distances k with respect to the cable axis are customer-specific and depend on the minimum wire rod length that is to be laid.

The wire is on the upstream system parts e.g. the straightening and cutting machine is cut to the required dimension of the X axis and positioned in relation to the X axis. According to FIG. 2, the laying cassette 14 is in position B below a straightening and cutting machine or the wire feeder A, ready for loading. By opening a transfer unit, the cut wire rod falls into a cassette shaft 14.3 at the required position in the Y direction. The wire rod 5 is braked by the baffle plate 1. The wire rod 5 is held by the baffle plate 1 and the guide plate 2. The frame 11 is then clocked in the Y direction by the grid dimension b to the next cassette shaft 14.3.

This process is repeated until the complete number of wire rods 5 required are in the installation cassette 14 or the respective cassette shafts 14.3. Thereafter, the installation cassette 14 is moved into the buffer station C and then into the transfer station D. As soon as the device, such. B. the concreting pallet is below the laying cassette 14, the laying cassette 14 or the cassette shafts 14.3 can be opened by opening the dispensing opening 14.2 by means of a linear movement of the cable shaft 7 and the wire rods 5 can be transferred. In the meantime, it is possible to load another installation cassette 14 in station B and to park it in buffer station C.

As soon as the first filled and now empty laying cassette 14 has reached the berth or the buffer station E, a further laying cassette 14 is moved to the transfer station D. With at least two, max. three such laying cassettes 14, the required rod material is advanced in the required grid dimension and the position D is made available on demand. Installation examples are shown in Fig. 10. The grid dimension is freely selectable, since the laying options are possible in a grid of at least grid dimension b and a multiple thereof, as can be seen in FIG. 10.

Reference list

1 shaft wall, baffle

2 bearings, baffle

2.1 Rope pick-up

3 rope

3.1 first rope level

3.2 second rope level

3.3 Rope pair

4 control rope, rope

5 wire rod, steel or reinforcing steel wire

6 Spring package "length compensation rope"

7 control shaft, cable shaft

8 prism roller, control shaft bearing

9 bearing block

10 cassette holder

11 frames, chassis supports

11.1 side member

11.2 Cross member

12 main landing gear

13 side landing gear

14 installation cassette

14.1 insertion opening

14.2 Dispensing opening

14.3 Cassette slot

a max. Wire length, longitudinal dimension of the slab ceiling b grid dimension, grid dimension

A feeding wire

B station, train station

C buffer station

D transfer station

E buffer station F Opening for wire transfer h Width of the plate ceiling k1 Distance between baffle plates k2 Distance between baffle plates

L1 position, blocking position

L2 position, blocking position p1 width of baffle

p2 Wide baffle

X axis

Y axis

Z axis

Claims

1. Laying cassette (14) for transporting wire rods (5) with at least one bearing (2) for supporting the wire rod (5), several cassette shafts (14.3) arranged one behind the other in the Y direction being provided, the respective cassette shaft (14.3 ) is delimited in the Y direction by two shaft walls (1) running in the vertical Z direction and has an insertion opening (14.1) between the two shaft walls (1) into which the respective wire rod (5) from the horizontal transport direction downwards in the Z direction In the respective cassette shaft (14.3) one can be guided and placed on the bearing (2), an output opening (14.2) is provided, through which the wire rod (5) is transferred downwards in the vertical Z direction to further processing machine and system parts can, characterized in that the bearing (2) is formed by a baffle plate (2), which is opposite a shaft wall designed as a baffle plate (1) in a Positioned first position L1 is positioned so that the wire rod (5) can be slidably against the baffle plate (1) due to its weight force over the baffle plate (2) and through the baffle plate (2) and the baffle plate (1) a bearing (2nd ) is formed for the wire rod (5), wherein the guide plate (2) can be brought into a second position L2, and the guide plate (2) in position L2 the outlet opening (14.2) for the wire rod (5) downwards in Z- Direction releases, the wire rod (5) until it leaves the cassette

shaft (14.3) can be placed against the baffle plate (1). 2. installation cassette (14) according to claim 1,

characterized,

that a frame (11) lying in an XY plane is provided, in which a plurality of ropes (3) are tensioned in the X direction, two rope levels (3.1, 3.2) being provided one above the other in the Z direction, two in the Z direction Ropes (3) of the respective rope level (3.1, 3.

2) form a rope pair (3.3), the rope pairs (3.3) being arranged in the Y direction in a grid dimension b within the frame (11).

3. laying cassette (14) according to claim 1 or 2,

characterized,

that the baffle plate (1) aligned in the Z direction is attached to the respective pair of cables (4.3).

4. installation cassette (14) according to claim 2 or 3,

characterized,

that the guide plate (2) is pivotably attached to the respective rope (3) of the upper rope level (3.1),

5. laying cassette (14) according to any one of claims 2 to 4,

characterized,

that a pair of baffles (1) are provided on a pair of cables (3.3), which are arranged at a distance k1 from one another in the Z direction, and that several baffles (2) are provided on a cable (3) of the upper cable plane (3.1) Z-direction are arranged at a distance k2 from each other.

6. laying cassette (14) according to any one of claims 2 to 5,

characterized,

that a control cable (4) is provided which is tensioned in the X-direction in the frame (11), the control cable (4) being slidably mounted in the Y-direction.

7. laying cassette (14) according to claim 6,

characterized,

that two control shafts (7) extending in the Y direction are provided with a plurality of recesses (7.1) extending in the X direction, the respective control cable (4) being guided at the end through the respective recesses (7.1) of the respective control shafts (7), wherein A corresponding offset in the Y direction within the frame (11) can be carried out for all control cables (4) by an offset of the control shafts (7) directed in the Y direction.

8. laying cassette (14) according to any one of claims 2 to 7,

characterized,

that the guide plate (2) has a cable receptacle (2.1), by means of which at least one positive connection acting in a Y direction between the control cable (4) and the guide plate (2) is ensured.

9. laying cassette (14) according to any one of claims 2 to 8,

characterized,

that the frame (1) 1 has a main and a side drive (12, 13).

10. laying cassette (14) according to any one of claims 1 to 9,

characterized,

that the baffle plates (1) are at a distance k1 from each other in the Z direction, with 60 cm <= K1 <= 100 cm or 30 cm <= K1 <= 60 cm or 10 cm <= K1 <= 30 cm and / or that the guide plates (2) have a distance k2 from one another in the Z direction, with 60 cm <= K1 <= 100 cm or 30 cm <= K1 <= 60 cm or 10 cm <= K1 <= 30 cm.

11. laying cassette (14) according to any one of claims 1 to 10,

characterized,

that the baffle plates (1) and / or the guide plates (2) are detachably attached to or suspended from the respective rope (3).

12. System consisting of several laying cassettes (14) according to one of the preceding claims, which are used in the circulation system, in which at least two laying cassettes (14) are moved between the following stations:

Station B, the starting position for loading

Station C, buffer station for a loaded cassette

Station D, transfer station

Station E, buffer station for empty cassettes.

13. Method for loading further processing machine and plant parts, such as concrete pallets or mat welding systems with wire rods 5, in which the respective wire rod (5) is introduced from above into an insertion opening (14.1) of a laying cassette (14) and onto a warehouse ( 2) is placed inside the laying cassette (14), the respective wire rod (5) being transferred from the laying cassette (14) to further processing machine and plant parts in the vertical transport direction via an output opening (14.2),

characterized,

that a baffle plate (1) and a baffle plate (2) positioned opposite the baffle plate (1) are provided and the baffle plate (2) is released or swiveled to release the discharge opening (14.2), so that the discharge opening (14.2) to a dimension F. is enlarged.

14. The method according to claim 13,

characterized,

that during the displacement or pivoting movement of the guide plate (2) the wire rod (5) is guided along the baffle plate (1) until it falls out of the dispensing opening (14.2).