DE1127037B - Device for the automatic turning of molding boxes in molding systems that work automatically and in cycle - Google Patents

Description

GERMAN

PATENT OFFICE

B 40397 VIa / 31c

REGISTRATION DATE: MAY 26, 1956

NOTICE THE REGISTRATION AND ISSUE OF EDITORIAL: 5. A P R I L 1962

The patent 1029 538 relates to an apparatus for making ready-to-cast molds with automatic and molding systems working in time, e.g. B. with turnstile forming machines on which the upper and lower boxes are formed alternately one after the other.

In the case of molding systems of this type, the upper and lower boxes leave the molding machine one behind the other. Carrying out the operations still required to produce the ready-to-cast form - drilling the pouring funnel, inserting the cores, adding the upper to the lower box - according to the The order of the incoming molding boxes requires a strong structural enlargement of the entire system, and manufacturing times would be significantly increased.

Measures have been proposed by patent 1,029,538 which are suitable for overcoming these disadvantages to eliminate. The device according to the main patent contains devices for this purpose Turn the molding box by 180 ° to convey the upper box separately from the lower box Manufacture of pouring funnels as well as for placing the upper box on the lower box.

The invention is based on the object of a device according to the main patent, the requirements for performing the operations to create the lower box, these operations as well as those for the upper box should be carried out automatically.

Although there are already turning devices for lower box known, which to a certain extent a enable automatic operation. With these turning devices, the turning cage is opened after actuation turned by switches or stopped, with the drive of the cage rollers turned off at the same time or is switched on. A locking device at the cage entrance allows another molding box to move in only close when the roller conveyors are horizontal.

In these known turning devices which can only be used for horizontally running roller conveyors no means are provided that cause the reversible cage to be turned back.

In contrast, a turning device is proposed according to the invention, consisting of a Reversible cage with two arranged one above the other, in its basic position in an inclined position Roller track pieces and one roller track piece each in front of and behind the turning cage with a height difference, each of which in a known manner between the horizontal and a certain inclined position Device for automatic

Turning molding box

when working automatically and in rhythm

Molding plants

Addendum to patent 1,029,538

Applicant:

Badische Maschinenfabrik A. G., Seboldwerk, Karlsruhe-Durlach

Dipl.-Ing. Heinz Fricke, Zurich (Switzerland),

Helmut Doebele, Zelienople, Pa. (V. St. A.), and Rolf-Dieter Breda, Karlsruhe-Durlach,

have been named as inventors

is pivotable in an adjustment range, the inclined position of the front and the rear roller track piece depending on the basic position of the reversible cage. In front of and behind the pivotable Roller conveyor pieces are connected to horizontally running roller conveyors.

The arrangement according to the invention initially raises the question of the drive of the lower box their working route solved, as this is due to the inclination of the roller conveyor pieces under gravity be moved on. By appropriate choice of the angle of inclination there is the possibility of the process to accelerate or delay the work processes, with the obvious stipulation that their Adapt the time to the work rhythm of the entire system.

The roller conveyor pieces located in front of and behind the reversible cage are useful with one End pivotable about a horizontal axis in the vertical direction and with its free end on hinged to the piston rod of a lifting cylinder. In the reversible cage, for example, there is one with two roller conveyors located on top of each other and arranged on a pivoting shaft, which has a ring gear firmly connected to it. This ring gear meshes with one at both ends each equipped with a pressure medium-actuated piston

209 558/382

3 4

A rack with which the turning and turning are controlled by stalks. These components are inherently important Reversible cage takes place. The end movements of the knows and therefore not shown in the drawing. The piston of the rack can be affected by oil dampers. The same applies to the limit switches of any design can be braked. The roles of the contactors and wire connections from green both For the sake of clarity, roller conveyors are expediently not shown. That brakable and provided with a rubber coating or the interaction of the controls according to the invention themselves consist of rubber. elements is also without these complementary elements

The transition from the inclined working section to that shown in the drawing.

On both sides of the connecting horizontally running roller conveyors from the automatic molding machine is realized in that the roller conveyor with rollers 1 that is going to io includes itself both sides of the reversible cage arranged inclined from rollers 2 existing roller track piece 3 on. This Roller track pieces automatically into the horizontal one roller track piece 3 is with one end on one are adjustable. horizontal axis, while the other The automatic control of these three part-end on the vertical piston rod 4 of a pressure device is designed so that the turning cage 15 is hinged to cylinder 5 and within a certain depending on the inclination of the front and adjustment angle is pivotable. Depending on the mind the roller conveyor pieces located there automatically together with the arrangement of the system can the roller conveyor in perpendicular plane by 180 ° in both directions piece 3 on a - is rotatable - not shown. The actuation of the following disc can be arranged so that, for example, in or the preceding sub-device is closed from the 20 right angle to the longitudinal axis of the roller conveyor of the previous piece 3 arriving from the molding machine, following device automatically controllable. box 6 by 90 ° in the direction of the roller conveyor axis

It follows that, for example, that can be rotated before.

the turning cage attached roller track piece itself. Then located on the roller track piece 3 active in the inclined position when the turning cage 25 is the turning cage 10 for the lower box, with a or the stage arranged in this is basically rectangular stage 11, in which transfer, so in an inclined position, and that behind each other in two levels two roller conveyors with in Reversible cage attached roller track piece also running in the axial direction of the reversible cage rollers is inclined. Which are arranged on the front rollers 12,13, between which the sub-sheet pieces Standing molding box can then be retracted and held in place. To the night drive into the reversible cage. The movement of the fung that occurs when the box is retracted Reversible cage depends on the rollers 12, 13 having a rubber covering on the abutments closing roller conveyor section, no molding box is running. Mistake. At one end of the through the rollers The swiveling up of the roller track piece in front of the roller tracks of the reversible cage 10 formed 12, 13 Reversing cage is dependent on the fact that there is a stop 15 in the 35, which the retracting Reversible cage is a molding box. The reversing lower box 6 intercepts. The stage 11 with the ones in it that of the turning cage depends on the fact that the form-arranged rollers 12,13 is about a horizontal one box on the roller track piece behind the turning axis 16 pivotable. Turning the cage is retracted; from this retracted driven lower box 6 takes place in a clockwise direction, the The molding box is still the upward pivoting of this turning back of the reversible cage 10 against the Roller track piece controllable and also the clockwise direction. To drive the stage 11 of the lowering of the turning After moving into the subsequent cage 10, a pressure cylinder 18 is used, in which two Core insertion line. Piston 19.20 with toothed die arranged in between automatic control of the turning bar 21 shown slide. The rack 21 meshes with The device is expediently carried out by end 45 of a gear 22 wedged onto the axis 16. switch, which is controlled by the individual sub-devices. and / or are operated by the molding box. track piece 25, which is attached to the reversible cage Rolling of the adjacent end adjacent to the turning frame is rotatably mounted with the other the roller track piece and the roles of the end on the vertical piston rod 26 of a adjoining core insertion sections are 50 pressure cylinder 27 is articulated. At the end of the roller drive track piece 25, a stop 28 is provided, which is arranged in front of and behind the turning device, the forming nets entering the roller track piece 25 Roller track pieces can be intercepted with their lifting cylinder boxes 6. The roles 29 of the RoUenbahndern on a turntable and / or on a piece 25 are expediently as well as the RoI lifting table be arranged around the turning device 55 len 30 of the subsequent core insertion section 31 to any Changes in direction within the overall transmission.

to adapt the system. The turning device is in the basic position

Further details and features of the opposite, the roller track piece 3 in the horizontal, the

State of the invention emerge from the post-stage 11 of the reversible cage and the roller track piece

standing description of the drawing, in which a 60 25 inclined at the same angle of inclination so that the

Embodiment of the reversible molding box according to the invention by its own power through the station

device is shown schematically. To be able to draw. Above the roller track section 3

It is generally pointed out that there is a limit switch that is open in the rest position

working cylinders with pneumatic or hydraulic el. He (El) is driven by the

or mixed pneumatic and hydraulic Q ₅ box 6 is actuated and thereby checks whether a

table means can be operated. The loading molding box is located on the roller conveyor piece and

Sending the working cylinder with the one used at the same time, whether the roller track piece is in his

Pressure medium takes place via solenoid valves, which are in a three-dimensional position.

If the stage 11 in the reversing cage 10 is in the basic position, i.e. in an inclined position, it actuates a correspondingly attached limit switch £ 2, which is conductively connected to limit switch £ 1. The limit switch E 2 therefore checks whether the platform 11 is in the basic position. Below the end of the roller conveyor 25 that can be raised and lowered, a limit switch E 3 is attached, which is conductively connected to the limit switch E 2. The limit switch E 3 is actuated

Pressure chamber Sa of the lifting cylinder 5, as a result of which the roller track piece 3 is pivoted up into the horizontal in preparation for the next work cycle. After the turntable 11 has been rotated by 180 °, the molding box moves out of the reversible cage 10 and into the subsequent roller track piece 25, where it is braked at the stop 28 and at the same time the limit switches E 4 and E 6 be

contactor an associated solenoid valve is actuated, whereby the lower pressure chamber 5 α of the lifting cylinder 5 is depressurized, while the upper pressure chamber 5 b of the lifting cylinder contains pressure medium. As a result, one end of the roller conveyor 3 is lowered into such an inclined position that the molding box 6 located on it moves between the rollers 12, 13 of the stage 11 by its own force.

The stop 15 catches the molding box when the movable end of the roller conveyor 25 is at io and at the same time actuates the limit switch is lowered to its lowest point, ie when E5. Through the line connection of the limit switch at the same time the roller conveyor 3, the roller guides E5 with the limit switches E2, E3 and E4 is inclined over 12, 13 of the stage 11 of the turning cage 10 and the connected contactor a white roller conveyor 25 at the same angle. The teres solenoid valve is operated so that the lower pressure limit switch £ 3 therefore controls whether the roller space 18 a of the cylinder 18 receives pressure medium. The track piece 25 is in the basic position. in the upper pressure chamber 18 b located pressure medium

The form moved into the roller track piece 25 is diverted. As a result, the piston 19 goes to box 6, actuates a top mounted in its path, and the turning platform 11 becomes a clockwise limit switch E 4, which pivots with the end via a line. The actuation of the switch £ 3 connected as a double switch and the limit switch £ 5, which is designed in the basic position 20, causes a closed. The roller track piece 25 is located in the magnetic valve, the entry of pressure medium in the basic position, so it is at the angle of inclination
the roller conveyor 3 and the stage 11 inclined.

The limit switch £ 4 is via a - not shown - contactor with a - also not 25
shown - solenoid valve connected via a
corresponding pressure line the pressure medium supply
to the lifting cylinder 5 controls. The limit switch £ 4 checks whether the roller conveyor piece 25 is free of
Molding box is. The limit switches £ 2 and £ 5 are 30 activated. This actuation of the limit switch £ 4 is connected to one another by a line; the pressure, like the limit switches £ 2 and £ 3 and the latter with chamber 18 a of the cylinder 18, is also depressurized via an associated solenoid valve, and via a limit switch £ 4. second associated solenoid valve flows into the

Behind the roller track piece 25, a limit switch pressure chamber 18 b of the working cylinder 18 pressure medium £ 6 is arranged, which is open in the rest position. He 35 a. As a result, the turning platform 11 is actuated counter to which is also pivoted back clockwise into the roller conveyor piece 25, and guides the lower box 6 that has been retracted into the roller conveyor 25

Pivoting the roller conveyor piece 25 into the also includes the limit switch £ 6, so that the to-horizontal. The solenoid valve attached to the piece of roller conveyor receives power and allows pressure to flow into the pressure chamber 27a of the pressure cylinder 27 at the level of the molding box upper flow. The roller conveyor 25 is thereby arranged in the edge of a limit switch £ 7, which is closed in the rest position and is actuated by a molding box moving into the roller conveyor 31.
Another contactor, to which a line from 45
Limit switch £ 6 and which is connected to limit switch £ 7 by a holding circuit,
controls another - not shown - solenoid valve.

The mode of operation of the device is as follows: 50 is retracted, the rollers 30 of which are also driven (es it is assumed that the device is to be worked. When driving through the core insertion section 31 ten starts and the first molding box on the roller actuates the molding box the limit switch £ 7, whereby lane 1 arrives): the corresponding contactor is

First, the roller track piece 3 is de-energized in the corresponding solenoid valve and the cylinder space the horizontal. The turning cage 10 or the stage 55 27 a of the cylinder 27 is depressurized during the 11 is located with its rollers 12, 13 as well as cylinder space 27 ft receives pressure medium. This will the subsequent roller conveyor piece 25 in one of the roller conveyor 25 adjusted back into the starting position Inclined position. lowered. If the molding box has covered a certain distance when the molding box is moved into the roller or core insertion path 31, the end web is 3 the limit switch £ 1 is closed. Since there is 60 contact £ 7 free and the holding circuit for the the stage 11 is closed in the basic position, that is to say in the next step. The inclined position shown in the drawing is also Depending on the local conditions, the the limit switch £ 2 is closed. In addition, since the roller track pieces 3, 25 on a turntable adjoining Roller track piece 25 to be arranged with the one, for example, if the space-end is lowered, the limit switch £ 3 is activated. 65 nits require that the roller tracks 1, 30 in the win-der Limit switch £ 4 is closed because there is no angle to the longitudinal axis of the turning device 3, 10, 25 Molding box is located on the roller conveyor piece. Are to be carried out. Define these with or without a turntable Roller track sections 3, 25 connected to the limit switch £ 4 can also

the horizontal swiveled up. This movement can be restricted by any elastic means will.

If the roller track piece 25 has reached its highest position, a - not shown - Limit switch of the drive of the rollers 29 switched on, so that the molding box from the roller track piece 25 automatically into the core insertion section 31

together with their pivoting cylinders 5, 27 each be mounted on a lifting table, for example around the roller track piece 3 at the same time as a cutting device for those alternately molded on a single molding machine To use upper and lower box and separate them so that the upper box on one higher roller conveyor can be lifted.

Claims (6)

Patent claims: 1. Device for the automatic turning of molding boxes in automatic molding systems working in a cycle according to patent 1029 538, characterized by a reversible cage (10) with two roller track pieces (12, 13) arranged one above the other and one in front of and one in its basic position in an inclined position behind the turning cage (10) with a height difference arranged roller track piece (3, 25), each of which can be pivoted in a known manner between the horizontal and a certain inclined position, the inclined position of the front upper roller track piece (3) and the inclined position of the rear lower roller track piece (25 ) depend on the basic position of the turning frame (10). as 2. Device according to claim 1, characterized in that that in the turning cage (10) a pivotable stage (11) provided with two roller conveyors (12, 13) arranged one above the other is arranged is mounted on a pivot shaft (16) and one firmly connected to it Toothed ring (22) has a piston that is actuated by a pressure medium at both ends (19, 20) provided toothed rack (21), the KoI-ben serving as the drive of the turning platform (19, 20) run in a common pressure cylinder (18). 3. Device according to claims 1 and 2, characterized by one in the path of the the turning cage (10) after turning the extended molding box (6) Control device for turning the reversible cage (10) back by 180 ° into the basic position and for swiveling up the piece of roller conveyor arranged behind the turning cage in the working direction (25) in the horizontal as well as for the simultaneous activation of the drive of the rollers (29) of the roller conveyor piece (25). 4. Device according to claims 1 to 3, characterized by a in the range of the rear roller conveyor piece (25) adjoining core insertion section (31) from which through the molding box to be actuated control element, the control pulse of which is the lowering of the rear roller conveyor section (25) in the inclined position while switching off the roller drive and causes the lowering of the front roller track piece (3) into the inclined position. 5. Device according to claims 1 to 4, characterized in that the superimposed Roller track pieces (12, 13) of the turning device (10, 11) arranged on levels Have braking device and the rollers themselves are covered with a rubber or made entirely of rubber. 6. Apparatus according to claim 2, characterized in that at the end positions of the piston (19, 20) Oil dampers are arranged to brake the piston movement. Considered publications:
German utility model No. 1715 405;
French Patent No. 1052 872;
U.S. Patent No. 2,598,222. For this purpose, 1 sheet of drawings © 209 558/382 3.