DD135698B1 - MOLDING MACHINE, PARTICULARLY CORE FORMING MACHINE - Google Patents

Description

Title of the invention

Forming machine, in particular core forming machine

Field of application of the invention

The invention relates to a blowing machine for the production of foundry cores or molds. In particular, it relates to molding machines with vertically divided molds, which may have parts and parts Los, where the mold or the core - in the following is used for both only the expression core used inside the tool hardens and so the blower can be removed gestaltfest «

Characteristic of the known technical solutions

Machines are known (for example H 16 from Höper, BSD, KHBE 25/1 from GISAG, DDH), in which the core, in order to make it hollow inside, is made over a recess part, which after hardening of the core and after the horizontal pulling off of the two core box halves with the core in front of the machine is moved into the removal position, where it serves as a means of transporting and halving the core · Here, the core is lifted by ejector from the recess part and can then be removed and parked. In this machine, the entire clamping device will mix during the shot; the core box pressed against the shooting head. However, this type of machine has some drawbacks. Thus, in the production of cores that can not be made on the recess part, elaborate holding parts required. Furthermore, the beregeh

Arrangement of frontal Losteilziehvorrichtungen considerable difficulty or is quite impossible, since they are in Kernausfahrrichtung. As a result of different core heights and consequently different heights of the recess parts, highly fluctuating strokes for the stripping of the cores from the recess parts and thus different core removal heights result, whereby the removal of the cores is made more difficult. The core box is located inside the machine so that the core box contours ^at: work <7artungs ~ and nibs are very difficult to access, especially between the open core box halves remains a relatively small tree. The conversion and setup of the machine is complicated and time-consuming due to the inner core box.

Furthermore, from DE-OS 1 915 615 and 2 14-5 522 machines are known in which a transversely fixed core box half is pivoted after pulling the recess part and after subtracting the movable core box half about a horizontal axis, so that their contour with the core held down. Thereafter, an ejection of the core takes place on a removal conveyor belt, which is raised for this purpose. In this Llaschinen the necessary pressure-tight connection of shooting head and core box is achieved during the shooting process by pressing the entire shooting head. However, these machines have various disadvantages. By pivoting the one core box half down the lifting height of the discharge belt is limited, so that the discharge belt can not be lifted to an optimal height for the operator.

The modification of the core box and the conversion of the machine is difficult and time-consuming because of the inner core box. The pressing of the shooting head with the shooting part to the core box can due to the unfavorable power flow

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However, these low contact forces prevent the use of a universal, large-scale shooting head plate and the rapid imposition of the sand through a large-area shot valve in conjunction with a high-volume Luf cvorratsbehälter. Therefore, these machines operate on the blow principle with overhead blow head and therefore have other disadvantages, such as nohen air consumption, high Jiernkastenverschleiß and a large blowing time on. On the other hand, the stiffer sands pose the risk of sand bridge formation.

In DE-OS 2 431 344 and 2 347 072 is in a further iumachari; the laying of the core on tape outside the machine described. These are special machines for mask core formation, characterized by the bchv / епкеп of the entire core box and the entire blowing device for the purpose of filling the core box and the back of the mold.

гО storfes after the baking process · The disadvantageous effect here is the elaborate swivel mechanism, through which one of the core box halves is brought into the outer cut-off position. The necessary swivel function requires an additional jaw-moving movement of the cut-off band.

The two last-mentioned types of mannequin are joined together by a solid acuspid and a transversely movable, that is to say peelable core-box half together. The stripping movement of the transversally moving core cen-halves is effected; through a working cylinder · The following disadvantages occur:

- The necessary considerable clamping forces are fully transmitted to the frame;

- The outstanding cylinder brings; increased space requirements;

- An additional movement of the core box half of I.Iaschine is obstructed;

- By the transverse movement of only one core box half the creation of a variant of the mechanized core removal of the core slider and the recess part is prevented;

- If the core box division at the core box change is not always in the same place, then the firing part must be moved with v / ground;

- The transversely displaceable core box half lying within the aircraft is difficult to access during maintenance and in the event of a core breakage;

- bosteile can be mounted without substantial effort only in the transversely movable core box half ·

Object of the invention

The aim of the invention, whilst retaining the advantages of the prior art, is to achieve a more effective core production, to save material by means of lightweight construction, to obtain a universal application of the machine, and to improve the working conditions during conversion and maintenance ·

7Tesen the invention

The invention is based on the object, by means of suitable design and arrangement of the means for moving and positioning the core box, to create a mold, in particular a core molding machine, which ensures effective and reliable core production with the least possible physical stress.

According to the invention, this object is achieved in that on horizontal guide columns 1 two transverse to this

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movable frames 2 are arranged, each having a pivotable about a horizontal or vertical axis cocks 3, where the corresponding core box halves 4; 5 are attached. Two diagonal and outboard clamping and separating cylinders б are angelemct to the frame 2, that during retraction and extension of the cylinder б these frames 2 are parallel to each other, with axially displaceable and lockable Kiemmringe 7 the setting of an oeliebigen position of the frame 2 at allow retracted cylinders б.

The vertically arranged frame 2 are guided by the horizontally arranged columns 1. These in turn are mounted in vertical frame 8. By means of the bearings 9, the frames 8 on the columns 10 are vertically displaceable. By this arrangement, it is possible, attached to the frame 3 core box 4; 5 vertically and horizontally. The frame 8 are recessed so that the frame 3 "which are attached to the frame 2, in their end positions with extended clamping and separating cylinders. 6 can swing in and out of a horizontal and / or vertical axis in any Llontagelage.

Via a centrally arranged cylinder 11, the recess part 12 in the core box 4 ·; 5 on or moved out of this. At the same time this cylinder moves over a final drive 13, the entire clamping and separating device 1-3; 6 - 9 in the vertical direction. The core box is pressed in the upward movement against the shooting head 14, so that thereafter the shooting process can be initiated. When the cylinder 11 is lowered, the tensioning and separating device 1-3 »6-9 inevitably reaches the same position due to the start of a lower stop.

The Eahnen 2 are arranged centrally on the four guide columns 1 so that they can v / ground in the four possible, offset by 90 ° layers. For this purpose, the guide columns 1 are arranged square on the scrubbing columns 10. As a result, the core box halves 4 and 5 can be brought into the various positions for the core removal, maintenance, cleaning and retrofitting most advantageous outside the I'.Iaschine.

In a further possible variant of the support from a fixedly connected to the columns 1 guide carries a core slide 16 which is displaceable by a cylinder 17 · This ensures a same Kernentnahmehöhe. The core slider 16 has a plurality of openings through which the recess parts 12 can be extended and retracted. Furthermore, the core slider 16 has Hal'aeteile that keep the core or cores 18 when pulling out the recess parts 12 and the process in the removal position ·

embodiment

The structure and operation of the molding machine according to the invention will be explained in more detail with reference to several examples

 In the accompanying drawing show:

Figure 1: the front view of an embodiment of the machine with the core box closed,

Picture 2: the side view; also with closed core box,

Fig. 3ί two positions to remove the core; it is shown around a vertical and a swung about a horizontal axis core box half.

Figure Ц- shows the position of a core box half swung downwards around a horizontal axis, in contrast to Figure 3.

Figure 5: an embodiment with recess part and

Core slide when the core box is exposed,

Figure 6: the corresponding side view with extended recess parts,

Figure 7ί fragmentary, the arrangement of the movable on the columns 1 Losteilziehvorrichtung in plan view ·

The two core box halves 4 and 5 in Figure 1 are attached to two pivotable about a horizontal and vertical axis frame 3, which are hinged to transversely movable, guided by the four columns 1 frame 2 · The four columns 1 are on both sides with their ends in the vertical bewejbaren frame 8 attached. In conjunction with the columns 10, the bearings 9 ensure the vertical mobility of the entire tensioning and separating device 1-3; 6-9 · It is possible to install heating, gassing or ejection devices between the frames 3 and the core box halves 4 and 5.

The opening and closing of the core box 4; 3 takes place by means of the two horizontally arranged cylinders 6, which are each articulated to the frame 2. The transversely displaceable clamping rings 7 fix the bearing of the core box 4; 5 in the necessary for the shooting process location. This advantageously allows working with asymmetrically located core boxes and different core box widths. Regardless, arises when opening the core box 4; 5 by the start of the frame in the outer layers repeatedly the same position of the core box halves 4; 5 for core removal.

The cylinder 11 causes the extension and retraction of the Aussparungsceiles 12 and presses the same side during the firing process, the core box 4; 5 to the shooting head 14th

The remaining, not mentioned here Peile the Uaschine, as upper part with firing device 19 »sand bunker 20 and lower part 21 belong to the beach of the Pechnik and v / erden therefore unspecified listed

The following is the ^T, the 7irkungs Uaschine as explained in more detail ·

During the closing of the core box halves 4; 5 fix the Klenroiringe 7 uen core box. Thereafter, the recess portion 12 moves by means of the cylinder 11 in the lierkasten 4; 5 on. The end plate 13 places it from below to the core box 4; 5, and at its further upward movement, raises the raised tensioning and biasing device 1 - 3} б - 9 иіѣ. The tensioning and separating device is thereby guided by the guide bearings 9 on the four support columns 10. By the upward movement of the core box 4; 5 pressed to the shooting head 14 and can now be filled with molding material.

Now, the cylinder 11 is reversed and lowers again, the entire tensioning and separating device 1 - 3 »6 - 9 by their own weight and by acting between recess parts and core or core box friction follows the movement« To the inevitable connection of the recess part 12 to maintain the core 18 until its curing, the downward movement is interrupted shortly before the impact of the bearing 9 at its lower support 15. In this position, the machine remains until the core in the core box 4; 5 is cured.

After hardening of the core, the v / eitere lowering of the tensioning and separating device takes place until the bearings 7 abut the support 15. The tensioning and separating device 1-3; b - 9 has thus reached its lowest position.

By further driving the cylinder 11, the recess part 12 is now pulled out of the hardened core 18.

Now, the two core box halves 4 and 5 are moved apart by the extension of the cylinder 6, being pushed out by suitable known ejector core 18 either from the left or right core box half and thus remains in the other core box half ·

The further operations are dependent on the 7 / ahl the suitable KernabnähmeVariant · Figure 3 shows for the right core box half 5 the decrease by a Kernabnahmeband 22. For this, the core box half by the pivotable in this case about a horizontal axis frame 3 by means of the pivoting cylinder 23 in The illustrated position is brought · For this purpose, the Hahmen is auspartι so that an unhindered Sin- and swinging in the illustrated vTeise is possible · The core removal tape 22 is driven from bottom to near the core 18 and this is by the ejector 24 on the tape 22 ejected. Doing the tape 22 is lowered so far that the core box 4; The now free space barely above the core removal belt 22 allows it to boot again up to a position favorable for manual core removal into a transfer position to a collecting belt with a constant height For maintenance and cleaning intended position, which is approached only in case of need by manual switching · In addition, this position is provided for the installation and removal of the Kemkastens 4; 5 including recess part 12 and Schießkopfplat te 25 For this purpose, the said parts are clamped together, fixed in the position shown on the left of the swing frame by means of suitable Schnelispannmittel and then pivoted by means of manual switching in the machine. In this way, the molding machine can be set up quickly and without difficulty.

If removal of the core by a removal belt is not expedient, the position of the core box half 4 shown in FIG. 3 is used to remove the cores 18 by an operator or by suitable devices. Since the outward turning direction of the core box halves 4; 5 is achieved only by different mounting of the frame 2 in the square columns 1, in this EaIl the right side can be rotated rotated by 180 °, so that then the core box half 5 pivots about a horizontal axis and so both contours, for example, good for maintenance are accessible ·

Figure 4 shows a further possibility of core removal. Here the frame 2 with the core box half 5 is mounted offset by 180 ° compared to Figure 3. The core box half 5 then pivots into the drawn position and the core 18 is lifted out of the core box by the ejector 24 can be removed in this situation ·

Figures 5 and 6 show a v / eitere possible Kernabnahmevariante for cores that can not be held in any core box half due to the contour and so v taken over holding parts 26 and core slide 16 v - ground must go to this core slider 16 in a fixed to the columns. 1 Connected guide 27 · The recess part (s) 12 protrude through the core slider 16 · After the core or cores 18 harden, the core box halves 4} 5 are peeled off and then the recess parts 12 are pulled down through the cylinder 11 through the core slider Cores 18 pulled. The cores themselves remain standing on the core slide 16 and are held by Hai Teaeile 26 when moving out in the decrease position shown in Figure б · Again, the two core box halves 4 and 5 by manual switching to YTartung, cleaning and Yjeungung in the dashed line position to be brought. The retraction and extension

the core slide 16 is effected by means of cylinder 17 ·

In Figure 2 and Figure 7 loose-load drawers 28 are dargesseilt. These are slidably mounted on the columns 1 and can therefore be adapted to the different layers of the core box; In the other pictures, the Losteilziehvorrichtungen 28 are not shown for reasons of clarity.

The core box halves 4 and 5 are shown in Figure 7 in the closed state · The loose parts 29 are i & retracted the core box. In this position, the core box 4; 5 filled and the core 18 cured · After curing, the loose parts 29 are pulled and then the core box 4; 5 open. The loose parts 29 are thereby withdrawn with their connection ck 30 of the coupling jaw 31 and can then be swung out arbitrarily. The Losteilziehvorrichtung 28 is; while still vertically displaceable, so that the Los-ceile 29 at any height on the core box 4; 5 can be arranged.

The molding machine according to the invention achieves the following advantages over the state of the art:

The attachment of the clamping cylinder 6 attached to the horizontal Pührungssäulen 1 floating frame prevents the clamping forces are transmitted to the Llaschinengestell, especially on the vertical S-Jützsäulen 10, so that a vertical displacement of the entire clamping and separating device 1-3 » 6-9 with closed core box 4; 5 is possible and the entire construction can be carried out in a material-saving way.

The clamping cylinder arrangement, in conjunction with the axially displaceable clamping rings 7, fixes the core box 4; 5 in. Any position below the shooting head 14 and the use of different width core boxes. The diagonal outer layer of the two Spannzyiinder 6 stops

free the space behind the two Kernkäs gene, so that the two Kernkastenhalften 4- and 5 can be pivoted in various combinations from the machine · Thus, four different Kernabnahmemöglichkeiten be achieved · Ss is particularly advantageous that the Kernabnahmesseilen outside the machine are freely accessible At the same time, the core cones lying in the two core casehars Ц and 5 are freely accessible. This represents a considerable advantage in all processing and cleaning operations, for example in the event of clogged ventilation nozzles or in the event of a core failure Pivoting aes Sahmens 3 in a position outside the I.Iaschine the gesainte Unrüstvorgang is shortened and facilitates · This leads to a significant broadening of the scope of the machine.

The solution according to the invention, in addition to the pivoting movement of the core box halves whose transverse movement for opening the core box provides, also permits a core removal by means of core slider 16 and holding parts attached thereto. thereby the arrangement of loose Uodellteilen for forming, for example Hinterschneiduzigen in the core box halves possible, as far as it requires the contour of the core to be produced. The usability of a Kemschiebers also brings the essential for the concatenation with subsequent facilities essential advantage of the constant core removal height with it ·

The vertical displaceability of the entire clamping and separating device 1-3 * 6-9 further allows to form I.Iaschinenobererteil as a fixed salvation. As a result, it is possible to realize high pressure forces which do not act on the core box guide or support and permit a design of the shooting head plaque which is advantageous for every core shape. "A flexible overhead machine also makes it possible to accommodate a large air supply container and a large weft Shooting principle for

Thus, the molding machine has a universal imposition behavior and it can also be used with streif ere Fustoffmischungen be processed · A fixed machine shell also increases the stability of the machine and reduces the effort compared to a machine with a movable upper part, as in both The use of recess parts 12 makes the use of recess parts 12 a vertical movement below the core box necessary, which in the case of the fan according to the invention takes place through the cylinder and at the same time serves to press the core box against the shooting head 14. This further ensures that the core box is of different heights every set-up work can be set up and used.

Claims (9)

invention claim 1. molding machine, in particular core molding machine, for the production of foundry moldings in vertically divided core boxes with a core box arranged blowing or shooting head and a pressure cylinder for the core box, characterized in that arranged on four square, horizontal guide columns (1) vertically displaceable two transversally movable frames (2) are arranged in a floating manner, each of which has a further frame (3) for receiving a core box half, which are pivotable relative to the transversely movable frames (2) about a horizontal or vertical axis. 2. Forming machine according to item 1, characterized in that the frames (2) are connected to each other by means of two with respect to the frame (2) diagonally opposite clamping and separating cylinder (6) and that for positioning the closed core box (4, 5) the frame (2) correspond with clamping rings (7) adjustably arranged on the guide columns (1) 3 · forming machine according to point 2, characterized in that the horizontal guide columns (1) are movable along four vertical support columns (10) · Forming machine according to item 3i, characterized in that the ends of the horizontal guide columns (1) are connected to two frames (8) movable along the vertical support columns (10), whereby the frames (8) are recessed so that on the transversely movable frame (2) pivotally mounted frame (3) with the attached core box halves in the outer end positions unhindered by the frame (8) swing out and are · Forming machine according to one of the items 1 to 4, characterized in that the bearings of the frames (2) corresponding to the guide columns (1) in each case form the corner point of a square, 6 · forming machine according to item 1, characterized in that a working cylinder (11) is arranged centrally in the lower part (21) of the machine; is, the piston rod vertically between the lower guide columns (1) ver ~ mobile with the core box (4j5) corresponds. 7 * molding machine according to item 6, characterized in that the piston rod of the working cylinder (11) in the core box (4i5) retractable Aussparungsbeil (12). 8, forming machine according to item 1, characterized by a guide (27) fastened to the guide columns (1), a core slide (16) horizontally displaceable therein by means of a cylinder (17) with openings for the retraction and extension of one or more recess parts in or from the core box as well as holding parts for the cores, 9 · Forming machine according to item 1, characterized in that on the guide columns (1) one or more in their position to the core box (4-j 5) adjustable Losteilziehvorrichtungen (28) are arranged. Dazu_jL ... S9iien drawings