DE2923702C2 - Method and device for the automatic lowering of core supports - Google Patents

Description

The invention relates to a method and a device for the automatic lowering of core supports on cores for hollow cast bodies in a given set-down position. The core supports are in the set-down position placed in a magazine on a locked magazine shaft that can be brought into the set-down position is attached.

Due to the increasing automation in the foundry industry, the dimensions of core boxes getting bigger. More and more cores have to be inserted into the core box; with hollow cast bodies With the larger number of cores, more core supports must also be deposited, the different Have sizes and designs. If this lowering of the core supports is carried out manually, it considerably extends the cycle time of the belt, thus the production time and the production costs. Simultaneously errors often occur with this type of settling, which inevitably lead to rejects and wreckage.

The DE-GMS 19 20 783 a device known in which a settling element on a guide channel, which in general consists of a flexible metal or plastic hose, attached in such a way that it is with the The end of the hose is freely movable and so in the desired manner on the core mark of the casting mold can be put on. In the case of the known device, it is therefore important to have to be deposited individually Feed core supports to the individual settling elements as efficiently as possible. The settling element is then flexibly based on the core brand.

In contrast, the invention is based on the object of providing a method and a device with the help of which the core supports required for a large number of cores in a core box at the same time in the specified set-down position

can be automatically discontinued. According to the invention, this object is achieved in the case of the method mentioned at the beginning solved in that each magazine slot is fixed in a template in one of the deposition positions and in the work cycle together with the other magazine shafts for the simultaneous depositing of the is unlocked for each core needed core supports; solved by in the device mentioned above a template that can be lowered into a core box, which in the set-down positions for the core supports the magazine shafts contains, which can be unlocked at the same time for the delivery of one of the core supports.

The essence of the invention is, with the help of the magazine, a template - with the respective hollow cast body adapted depositing system - to be equipped at the depositing positions specified by the core box has the magazine slots, and with the help of the

Filling system to equip each core box completely with the required core supports.

With the invention, the core supports to be used are immediately placed in hoses in the production area, Pipes or other magazining carriers so that they are already in the manufacturing plant receive the later weaning position. Magazining can be done fully automatically. The so magazined Core supports are then placed on a prefabricated template, which is in the set-down positions of the Core supports each contain a fixed magazine slot, so that the correct placement position of all Core supports is always guaranteed. The core supports that were already stored in the production plant fall by unlocking in the fixed magazine slot. This ensures that the correct core support is in place; can also be carried out on magazining of any number of core supports whose

Number is adapted to the production process.

The template with the magazine slots can be lowered above the core box; the The core supports are released with the help of

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Barriers, locks or the like, which are mechanically, can be triggered pneumatically or by other actuating elements. Triggering can be done with the Cycle time of the belt are coupled, so that the impairment of the belt speed by time-consuming manual lowering of the core supports is excluded all required for a core Core supports are released from the template at the same time and in the correct set-down position. the Templates can be exchanged depending on the core box equipment and are basically again usable. The different design of the magazine slots also allows simultaneous application different core supports.

With the invention, sources of error are eliminated; it finds a substantial saving in time and Cost instead. Tests with a hand-held device have made the great advantages of the invention clear and demonstrated that they represent a decisive technological advance in the field of large-scale casting represents.

An embodiment of the invention is shown in the drawing and will be described in more detail below described. It shows

F i g. 1 in a reduced basic representation a plan view of a device for depositing Core supports;

F i g. 2 approximately in a natural view from the in F i g. 1 shown device, partially in section is shown - line H-II in FIG. 1 -.

The mechanically operating depositing device chosen as the embodiment has a template 1 with one Base plate 2 on. The base plate 2 is prepared for a certain core, in which at certain Make core supports need to be positioned. The base plate 2 therefore has at each set-down position an opening 3, the outline of which is adapted to the outline of the core support 4 to be deposited at this point is. In the exemplary embodiment, with the device Core supports 4 with a circular cross-section

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will. But it is also possible to set down core supports with different outlines, if this is required. In such a case, the openings 3 are to be adapted to the respective core supports. A magazine shaft 5, which is filled with core supports 4, is fastened in each opening 3. Of the Magazine slot 5 can be made of transparent plastic. Each magazine slot 5 is with one magazine not shown connected. The magazines are made in their manufacturing facility with core supports in Deposit layer filled, which can be done fully automatically, and then connected to the magazine shafts 5. It it is advisable to put a magazine on each of the magazine slots 5. If the same core supports to be deposited with the device, it is also possible to have a magazine with several To connect magazine slots 5.

At the lower end of the magazine shaft 5 is a barrier in the form of an unlockable. Locking device 6 provided. This essentially consists of two in the axial direction of the magazine shaft 5 spaced apart pins 7, 8, each via a bolt 9,10 with the same pivoting device 12 are connected. Each pivot device 12 is essentially U-shaped in the exemplary embodiment educated. The legs of the U embrace the associated magazine slot 5; in the top of the U is a pivot bearing 11 is provided. In the locked position, the lower pin 7 engages in the magazine slot 5 a; the lowest tier core supports 4 rests on it upper pin 8 is arranged in the Vemegelungssteliung with its free end outside of the magazine well 5, which has an opening at this point, at the level of the core support following the bottom. To the Unlocking, the pivoting device 12 is pivoted parallel to the plane of the template 1 the bolt 10 of the upper pin 8 through the magazine slot 5 through in the outline of the bottom Brought core support following core support, preventing it from exiting the magazine well is before the lower pin 5 is pulled away from under the lowest core support The lowest core support 4 can therefore be placed on the core in the deposition position without further core supports from the Exit magazine slot 3. After the end of the lowering movement, the magazine shaft 5 becomes again locked. This is done in that the pivoting device 12 is pivoted back into its starting position as a result of which the lowermost pin 7 penetrates again into the magazine well 5 before the upper pin 8 leaves this and the column with the core supports 4 falls. This process can be repeated as often as desired will. It takes place simultaneously for all magazine slots 5 located on the device. That Deposition of core supports of different lengths is made possible by the different spacing of pins 8 and 9 balanced. Different outlines of the core supports require different cross-sections of the magazine shafts 5 and the breakthroughs 3.

Unlocking takes place synchronously with all magazine slots 5 that belong to the same template 1, whereby the core supports 4 are jointly deposited at the specified location at all deposition positions will. The accuracy with which the lowering takes place at the lowering position, and because of the simultaneity A short overall time in which this settling takes place are the main advantage of the settling device according to the invention. The simultaneous setting down is achieved via a linkage: the swiveling devices 12 of a row are connected to one another via rods 14. Each rod 14 is in the unlocking direction moved by a driver 15 which frictionally engages one of the pins 7 or 8 in the unlocking direction connected is; in the locking direction by a driver 16, which is connected to one of the pins 8 or 7 in Locking position is positively connected. The connection between the drivers 15, 16 and the Rod 14 can also take place via a pivot bearing which is connected to rod 14. the Driver 15, 16 are attached to a rod 17, which is guided against plates 20 attached to the end face the pressure of a spring 18 is pressed from the locked to the unlocked position. Multiple poles 17 are attached to a release plate 19. The trigger plate 19 is in the working and settling cycle actuated, in each case after the settling device is lowered into a core box.

The locking and unlocking does not have to be done mechanically; it can also be pneumatic or on others Way to be done. The template 1 is used for different hollow cast bodies with different cores differently executed. Existing templates can be used again.

Before the core supports 4 get into the magazine well 5, they are in the set-down position, i. H. so in order, placed in a magazine, not shown, which

is then attached to the magazine shaft 5 and with this on the template 1. The core supports can be stored in magazines immediately after their production. Magazining can be fully automated take place.

For this purpose 2 sheets of drawings

Claims (8)

Patent claims: 1. Method for the automatic placement of core supports on cores for hollow cast bodies in predetermined set-down position, in which the core supports broke into a magazine in the set-down position which is attached to a locked magazine well that can be brought into the lowering position, thereby characterized in that each magazine shaft (5) in a template (1) in one of the Deposition positions is attached and in the work cycle together with the other magazine shafts for the simultaneous lowering of the core supports required for each core is unlocked. 2. The method according to claim 1, characterized in that the core supports (4) directly in the Can be stored following their production. 3. The method according to claims 2, characterized in that the magazining is fully automatic he follows. 4. The method according to any one of claims 1 to 3, characterized in that on each magazine well (5) a magazine is inserted. 5. Device for the automatic placement of core supports on cores for hollow cast bodies in predetermined placement position with core supports containing and locked magazine slots, marked by means of a template (1) which can be lowered into a core box and which is in the set-down positions for the core supports (4) contains the magazine shafts (5), which at the same time for the delivery of one of the Core supports are unlockable. 6. Apparatus according to claim 5, characterized in that the magazine slots (5) mechanically are unlockable. 7. Apparatus according to claim 6, characterized in that with a release plate (19) linkage (15,16,17) are connected, which against the pressure of springs (18) from the locking position in which the bottom core support (4) is held in each magazine slot (5) in the unlocking position are displaceable, in which the respective bottom core support is released, the one above it is held until the locking position is reached again. 8. Apparatus according to claim 7, characterized in that in the locking position the each bottom core support (4) rests on a first pin (7) protruding into the magazine slot (5) and at the level of the core support arranged above it outside of the magazine well, a pivotable one into it second pin (8) is arranged, and that upon actuation of the linkage (15, 16, 17) the second Pin is pivoted into the magazine well when the first pin is pivoted out of it.