DE2242989A1 - DEVICE FOR HANDLING, CONVEYING AND CUTTING UNHOLDED PORE CONCRETE BODIES - Google Patents

Description

PATENT ADVOCATE?

. H. LEINWEBER dfpl..inc. H, CARPENTER

DIPL..ING. A. Gf. ν. WEN GERSKY 2242989

8 Munich 2, Rosental 7, 2nd ed.

Ttl.-Adr. Ulnpat Munich Telephone (Uli) 2M5989

Postal check account: Munich 220X5

September 1, 1972

Our sign

. IwAg - Spx-173-Vty

Aktiebolaget Internationella Siporex / OEB, MaImö (Sweden)

Device for handling, conveying and cutting of still unhardened aerated concrete bodies

When manufacturing aerated concrete products such as building elements, a large body is usually made first Poured aerated concrete mass and then cut it up, while the aerated concrete mass is still in a semi-plastic, unhardened state to obtain a plurality of smaller pieces corresponding to the desired products. Included the cast body is usually given a size of 0.6 χ 1.5 χ 6.0 m or more and thus the shape of a large, long "cake", which is very sensitive by the character of the crowd. The (Hessing of the primary, large body takes place preferentially on a base specially adapted for this purpose within a mold frame, the walls of which to expose the cast Body after solidification of the porous concrete maase self-supporting consistency can be removed. Cut the £ of the semi-plastic cast body is in turn preferred, in a special sonshipamosohiiiQ or sons

BATH ORIGINAL

device in which the body must rest on a different type of mat or bed than the one on which it was previously molded. The large and sensitive cast body must therefore be moved from the casting bed to this second cutting bed will.

Experience has shown that there is a great risk that the large cast body is damaged by cracking when it is moved from one base to the other. It is also It has been found that the cracking, which can seriously impair the effective recovery of the cast body, is primarily Line caused by mismatch between the casting bed and the cutting bed, especially in terms of flatness will. This real agreement arises, among other things, by that the casting bed normally throws itself during the casting process and is often exposed to mechanical deformations, so that the underside of the cast body is more or less crooked and uneven, while the cutting bed itself is larger Has the prerequisites to retain the good evenness that was striven for in its construction, and is in any case not able to to adapt to the irregularities of the cast body.

A measure that has long been known for eliminating the aforementioned transmission damage to the cast body is to cut the body into a number of smaller parts by means of some, at least transverse, so-called preventive cuts before it is placed on the bed. The resulting smaller cast body parts have a considerably smaller tendency to tear open when placed on the cutting bed than the whole, large cast body. The difficulty with this method, however, is to bring about the preventive cuts. So far, these cuts have usually been made while the outer body was still on the casting bed, but this is disadvantageous if the

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body using the cutting wires normally used for preventive cuts. There is certainly the possibility of attaching a number of cutting wires in the mold, which consists of the casting bed and the molding frame, before the casting compound is poured into the mold, which, after the casting, porosity and solidification of the compound, can be pulled upwards to form the desired preventive cuts but this is \ very unfavorable for several reasons, not least because the so-induced preventive cuts are not having the sufficient Genauig I ness to serve as erzeugnisabgrenzende cuts.

Furthermore, in certain cases, it is desirable to do this before putting on the bodice of the cast body on the cutting bed to be able to carry out a more extensive processing of the same, including e.g. a finishing of one or both broad sides of the cast body and / or a more extensive cutting of the same, which offer the possibility would considerably simplify the aforementioned device for the final cutting of the cast body or in even to omit certain cases entirely.

The present invention has the task of creating a device that on the one hand as an aid for conveying a still semi-plastic aerated concrete body from a first bed, usually aem pouring bed, to a second bed, ηorma! Cutting bed, can serve, and on the other hand, a convenient and in various respects favorable processing of the sensitive Cast body simultaneously with its displacement between the sub * location, which can result in time savings and technical advantages in the production plant itself. There is the Machining of the cast body at least from the creation of preventive cuts, so that the risk of damage to the cast ^ - body practically completely eliminated when it is dislocated, we <i. Another object of the invention is to provide a device of the prior!

309811/0793 I.

mentioned type of creating a delivery of the promoted and machined cast body to the receiving document in reverse i Position in relation to his previous position on the pouring bed allowed, as this is advantageous in certain cases; has meadows.

The device according to the invention for handling, conveying and sons of as yet uncured aerated concrete body includes a gripper that is used to grasp one on a first bed flat resting, demolded aerated concrete cast body by exerting a clamping effect against two opposite side edges of the same is arranged, wherein the gripper is vertically and horizontally movable to the cast body on a second, separate from the first To move bed, the subject matter of the invention is mainly characterized in that the gripper in large the shape an open, rectangular frame, the inner width of which is continuously variable within certain limits, by the to be able to exert clamping action required for gripping the cast body, and the height of which is smaller than that of the cast body to be gripped, this frame being carried by a carrier opposite which it is at least 90 ° around an approximately horizontal axis that is essentially parallel to the longitudinal direction of the frame is pivotable.

To further explain the invention, two exemplary embodiments are given below with reference to the accompanying drawings and how they work. In the drawings, some of which are schematic, shows

1 shows a cross section through the first exemplary embodiment, wherein the gripper of the device is in a position, ready a cast body made of semi-plastic aerated concrete to grab and lift off a pouring bed,

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Fig. 2 is a side view of the device miijdem Gripper in swiveled position and the cast body in folded position,

Fig. 3 again in cross section, the same as Fig. 2, but further illustrates a machining operation that is a flattening the two broad sides of the cast body,

4 shows the next work stage in a similar manner, which involves cutting the cast body encompasses in its transverse direction in order to create at least preventive cuts therein,

5 shows the delivery of the machined cast body to a receiving document, and

6 shows the return of the gripper to the starting position according to FIG. 1,

7 shows a cross section through the second embodiment with the gripper in one position, a semi-plastic aerated concrete cast body is ready to grab and lift from a first pad,

Fig. 8 also in cross section, how the gripped body during its promotion by means of the device is folded so that it can be cut in its transverse direction can,

9 shows the cutting process itself in a corresponding manner,

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Fig. 10 how the cut cast body in a

horizontal, lying position backwards;

and is placed on a second surface,

11 shows a side view of the device with its gripper in that shown in FIG location;

Figures 12A and 12B show an end view of the gripper and illustrate how the frame-like one Gripper is designed with a wegscbweokbaren longitudinal side piece, which at its swiveling away the cast body in its folded position for vertical «cutting exposed.

The device shown in FIGS. 1 to 6 primarily comprises a gripper, which is generally designated 1 and in FIG large has the shape of an open, rectangular frame, whose long and narrow side pieces are fixed to one another in this case are connected. In each of the two longitudinal side pieces of the frame, a number of printing cylinders 2 is arranged, with one opposite cooperate with the frame itself movable jaw 3, whose inwardly facing side a number of spaces has separate support blocks 4. By supplying pressure medium to the cylinders 2, the clamping jaws 3 with the support blocks 4 to rest against two opposite side surfaces on the to gripping and handling aerated concrete cast body P are brought. The cylinders 2 are preferably double-acting to, when desired, both a positive gripping function and a positive ι tive release of the body P to cause. The one representing the gripper As can best be seen in FIG. 2, the frame has a greater inner length than it corresponds to the length of the body P

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speaks, which leaves the ends of the body free during handling. The height of the gripper is also smaller than that of the cast body. In the narrow side pieces of the frame Yorschubscrews ij are stored for synchronous cooperation, each driving a slide 6, see especially Fig ₀ 2 and 6. Between these slides a cutting frame 7 with cutting wires 8 is carried, which in the end positions of the cutting frame in the spaces between the support blocks 4 of the clamping jaws 3 fall in "The feed screws 5 are driven by suitable motors 9 in the frame construction forming the gripper",

The frame-like gripper 1 has pivot pins 10 on the outer sides of its scabber side pieces, which are each at the outer end a pivotable arm 11 are mounted * The pins 10 are provided with gears 12, which are synchronized with a pair of Motor drive mechanisms 1.3 cooperate, with the help of which the gripper about the horizontal axis formed by the pin 10 in the Relationship to the arms 11 can be swiveled, but be it emphasized that the pivoting of the gripper about the axis represented by the pin 10, which extends through the narrow side pieces of the frame and at least in the vicinity of the hinge point of the gripper and the center of gravity of the body P supported by it runs, is not essential for the function of the device, but allows certain advantageous work processes, which will emerge from the following * The arms 11 are in turn firmly connected to a horizontal axis 14, which of a carrier are carried and stored therein, which in the example shown a pair at some distance from each other on a factory floor assembled bearings * · "blocks 15 includes» Sometimes it can However, it would be advantageous to place these bearing blocks on a movable one instead of permanently mounting them on the floor. ”With each arm 11 is a Gear 16 firmly connected, which is driven by a motor-driven input

-8th-

309811/0733

Adjusting mechanism 17 is actuated. The two mechanisms 17 work synchronous and would of course be the same as the two: Mechanisms 13 by a single, but more powerful drive mechanism replaceable. The pivoting movement of the gripper 1 about the axis 14 under the action of the mechanisms 17 is fundamental for the Function of the device, which concerns the conveying of the cast body P between a first and a second base. In the present Case, a flat-bottom trolley 18 is used as the first base, which has served as a casting bed for the body and on which the body is delivered to the device by the displacement of the viagens on rails 19, while the second, receiving Support of the body P is represented by a belt conveyor 20, e.g. a cutting machine for the further cutting of the Body can be assigned.

The device according to FIGS. 1 to 6 also includes a hanging viagen 21 which is attached to decice rails 22 in the longitudinal direction the axis 14 is movable above the bearing blocks 15. This carriage 21 is fork-shaped and has on the insides of both of its downwardly directed legs partly upper and lower brackets 23 with support wheels 24, which for interaction with each other opposite Sides of the longitudinal side pieces of the frame-like gripper are arranged when the gripper is canted according to FIG is, partly so-called. Flattening devices 25, which work according to the principle for planers or milling cutters for finishing and finishing of the two broad side surfaces of the body P carried by the gripper can be brought. Such flattening devices are within the aerated concrete industry known in different versions, which is why a more detailed description of the same is hardly necessary here.

The device now described is used in the following way:

When the flat car 18 with the cast body lying on it P has been conveyed to the device in a predetermined position

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is, the gripper 1 is lowered or folded down over the body P according to FIG Body is clamped, but not damaged. The body is then lifted from the flat carriage 18 by the gripper 1 pivoting upwards, as shown by the arrow in FIG. When the vertical or canted position according to FIG. 3 has been reached, the hanging carriage 21 is guided in the longitudinal direction from a position outside the one bearing block 1b to a position outside the other bearing block 1b according to FIG carried body P is processed and leveled on its two broad sides. It is the Yorschubschrauben be started 5 of the gripper, so that the Sohneidrahmen 7 is set in movement and cutting the body P ^in: causes the transverse direction thereof. As a result, a number of very precise cuts are made, which either serve only as preventive cuts or can also represent all the cuts in the transverse direction required for dividing the body P into structural elements. When the son's oath frame 7 has passed through the body P in one direction, for example downwards as shown, the body P is ready for delivery to the receiving pad 20. This takes place in that the gripper is pivoted further according to the arrow in FIG. 4 together with the arms 11 until the now processed body according to FIG. 5 comes into contact with the receiving document. After the swiveling movement of the gripper has thus taken place, the clamping jaws 3 'are moved apart again so that the body P is released from the gripper and this can be returned for the purpose of handling a new body. During its return, the gripper 1! 6 pivoted about the horizontal pin 10 and thus offset in parallel during the pivoting movement of the arms 11. ,

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- ίο -

In this way, the cutting frame 7 will again be in the same position as in FIG. 1 when the next body is handled should, and this without using the pre-jacking screws 5, what means a considerable gain in time, since the advance of the snow frame usually goes very slowly. j

It should be clear that when the device operates as described, the body P is delivered in the reverse position to the receiving support 20, which is sometimes advantageous. If this is not desired, it is also possible, thanks to the design of the device, to deliver the machined body with its original underside turned downwards to the receiving document by simply moving the device at a suitable stage brings the gripper to pivot around the Zapferj 10. Though finishing the broadsides of the body I? In the example shown, if the body has to be canted according to FIG. 3, the cutting can take place in any position of the body and also during a suitable part of the pivoting movement of the gripper. The device thus allows great variations in terms of the mode of operation and can therefore meet the most varied of requirements. The skilled artisan would also be clear that the tilting of the gripper, on the one hand to ■ the primary pivot axis 14 and on the other hand to the parallel with this Achye pivot 10, the fetching or the supply of the body P on vertically separated levels possible. In other words, thanks to the double pivoting ability of the gripper, it is not necessary for the top of the receiving belt conveyor 20 to be level with the top of the flat car 18 and at a predetermined level in relation to the axis 14. However, if such a limitation can be allowed together with the fact that the body is reversed, the device can of course be simplified in that the swiveling of the gripper about the pin 10 is superfluous and the gripper can instead be firmly connected to the arms 11.

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The device according to FIGS. 7 to 12 differs internally constructive point of the previously described from several

Viewpoints, but operates on the same basic idea, "In the \ form shown the variant also does not permit such a 'de processing is nearly independent of halbplastischea uncured porous concrete bodies ^ how the device has already been described, but this comes off i finally therefore that only a simplified embodiment 'has been shown. The specialist and the machine designer; The possibility should be readily apparent to supplement the device with further work functions _{or the like}

The device variant according to FIGS. 7 to 12, like the device type already described, primarily comprises a frame-like gripper, which is generally designated 31 and is pivotable about a horizontal axis, which extends through the narrow side pieces of the frame-like gripper and essentially through the center of gravity of the Gripper as well as the aerated concrete cast body P1 carried by it extends ". Furthermore, the gripper 31 is carried by a carrier 32", which in this case assumes the shape of a trolley-like carriage and hangs from beams 33 and runs along them, which are attached to a ceiling or Pillars are attached. The bars 33 extend in the direction in which the body P1 is to be conveyed in order to be able to move from a first base 34, e.g. a casting bed, on a second base 35 (FIG. 10), for example in the form of a belt conveyor, which is assigned to a cutting machine for the final cutting of the body ₉ . A suitable drive mechanism 36, which for the sake of simplicity has only been indicated in FIG. 7, controls the conveyance of the carriage 32 along the bars 33 with the required accuracy

The frame-like gripper 31 is composed of two main components components, namely from a rigid, U-shaped frame part 37, the bottom of which makes up one long side of the frame

-12-

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and on its inside a number separated by spaces Has support blocks 38, and the legs of the shell sides + - Pieces of the frame form on its outer sides with pivot pins 39 are provided, as well as from a likewise rigid, U-shaped Frame part 40, the bottom part of which has the shape of a beam! has, which makes up the opposite long side piece of the frame, and the legs of which form arms on the inside the legs of the frame part 37 are pivotably mounted. The en-; that of the bottom part on the frame part 40 form protruding parts Pin 41, the position-fixing with a recess 42 in the. The end of each leg of the frame part 37 cooperate. The ends of the arms on the frame part 40 are pivotably mounted on pins 43, which are movable in slots 44 in the legs of the frame part 37, through the action of a Umstellungsfflechatiisfflus 45, e.g. of the eccentric type, which can be operated either manually or with the help of a suitable motor. Like on As best seen in FIGS. 12A and 12B, the frame part 40 is set up to assume a functional position (FIG. 12A), in which the pins 41 are guided in the recesses 42 and the beam-like bottom part of the frame part 40 under the action of the conversion mechanism 45 to the bottom part of the frame part 37 is movable back and forth, so that the gripper can be brought to the body P1 by clamping against to grip its long side edges or to let go of the same. When the pin 43 maximum in the direction towards the free leg ends of the frame part 37 are moved, the frame part 40 can be released (Fig. 12B) and around a small, by not shown stops can be folded to the side at a limited angle. As can be seen from the following, this possibility is used when cutting the Body P1 used in the canted position of the same.

The horizontal pivot pins 39 of the gripper 31 are carried by slides 50 and 51, which with the help of feed screws

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ben 52 are vertically movable in the downward-facing side pieces of the carrier 32, the screws being driven synchronously by means of the drive mechanism 53. In this way, the gripper 31 can be raised and lowered relative to the carrier 32 _o One pivot pin 39 of the gripper 31 is also connected to a motor-driven adjustment mechanism 54, which in turn is connected to one of the slides 51 and allows the gripper to pivot in a controlled manner around the horizontal pin 39 allows. In this way, the gripper can either be brought into a horizontal, lying position or into an edged position. The gripper can also be turned upside down if necessary. A horizontal cutting frame 56, in which cutting wires.57 are clamped, is connected to the carrier 32 by means of articulated arms 55. With the help of the link arms 55 of the cutter frame 56 ISIJ by the operation of a cylinder 58 between a raised, inactive position, for example, according to \ Figs. 7 and 8, and a lowered, active position according ^to! Fig. 9 pivotable. As an alternative, it would be possible to attach the cutting frame 56 firmly to the carrier 32, but the arrangement just described is more favorable, since it has the required height of the | Carrier as well as the lifting height of the body P1 when cutting is reduced <

The device according to FIGS. 7 to 12 is used in the following way: ' \

According to FIG. 7, the carrier 32 is adjusted over the base 34, from which the semi-plastic aerated concrete cast body P1 descends-j fetch is, and the gripper 31 is lowered perpendicular to the position j shown, while the frame part 40 such a position in Ver-j Relation to the frame part 37 assumes that the gripper can go down unhindered over the body. Then the frame part 40 in the manner already described in relation to the frame part 37 vei so that the body P1 is clamped and can be lifted off the base 34. Thereupon the carrier 32 is preferably 8 a little sideways and the gripper in

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vertical position with the frame part 40 turned upwards, so that the body P1 is placed on the edge and is supported with its full weight on the frame part 37. The frame part 40 is then pivoted away as described earlier, whereby the upper edge surface of the body P1 is exposed. At the same time, the cutting frame 56 is in its functional position pivoted down and the feed screws 52 are in Rotation offset to lift the gripper together with the body P1, the latter according to FIG. 9 in the transverse direction is cut through. The lifting of the gripper and body continues until the cutting wires 57 of the cutting frame through the Bodies have passed and penetrated into the spaces between the support blocks 38, whereupon the gripper is lowered again so that the cutting wires ineffectively exit through the cuts just made in the body P1. When the altitude of the gripper again corresponds to the position shown in FIG. 8, the cutting frame 56 can be pivoted away and the frame part 40 can be returned to its previous place in order to clamp the now ^ escheschnitted body P1 again, whereupon the gripper with the body clamped therein swiveled into the horizontal position according to FIG. 10 and the cut body to the receiving pad 35 can be dispensed after the carrier 32 has been moved to a position just above the same. It should be obvious that the cut body P1 either with its former underside facing downwards, as desired can be turned upside down or placed in the opposite position on the receiving pad 35. When the body delivered to the pad 35 has been released, the gripper becomes something again raised so that he can pass the delivered body unhindered when the carrier 32 for the purpose of picking up a new aerated concrete casting is returned.

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When machining the broad sides of the body P1 at; If the device according to Pig 7 to 12 is desired ₉ , such processing can take place by means of suitable Abilach devices, for example known very rough milling cutters or planing steels, which are used on! are mounted along the longitudinal side pieces of the child frame 56) so that this processing takes place simultaneously with the cutting of the body, which leads to a gain in time. In another; Conceivable modification of the device according to FIGS. 7 to 12 can be the: cutting frame 56 as well as the gripper 31 by the action
its own feed mechanism can be moved vertically in relation to the carrier 32, so that, by a downward movement during the cutting process, the upward moving gripper and the
body carried by it can encounter.

11/0?

Claims (1)

Patent claims: (i ^ y device for handling, conveying and gobneiclen of still uncured aerated concrete body, which comprises a gripper which is used to grip an aerated concrete cast body resting flat on a first bed by exerting a clamping effect is arranged against two opposite side edges of the same, wherein the gripper is vertically and horizontally movable, to move the cast body on a second bed separate from the first, characterized in that the gripper (1j 31) in large has the shape of an open, rectangular path, the inner width of which is continuously variable within certain limits in order to be able to exert the clamping effect required to grip the cast body, and the height of which is smaller than that of the cast body to be gripped, this frame being carried by a carrier (15; 32), with respect to which it is at least 90 ° by one approximately horizontal axis (14; 39) which is essentially parallel to the longitudinal direction of the path is pivotable. 2. Device according to claim 1 or 2, characterized gekennzeicb * net that the carrier (15; 32) actuating means (17; 54) for Pivoting of the gripper (1; 31) about the axis (14; 39), 3. Device according to claim 1 or 2, characterized marked- * net that the gripper (1) can pivot about two separate, parallel and horizontal axes (14 and 10) relative to the carrier (15) is, these axes by means of arms (11) or the like. are mutually connected. 4. Device according to one of claims 1 to 3, characterized characterized in that the carrier (32) is designed as a carriage or slide which can be displaced along a mainly horizontal path (33). i 309911/0793 5 # device according to claim 4, characterized in that that the pivot axis (39) of the gripper (31) of sweet fishes (50, 51), which can be moved vertically along guides in the carrier (32) by means of a height adjustment device (52, 53). 6. Device according to one of claims 1 to 5, characterized characterized in that the gripper (1) has a cutting frame (?) that faces the gripper and the cast carried by it »! body (P) is movable in order to be able to cut the latter! act after the cast body has been picked up from the first bed (18) and j has been lifted. ' 7. Device according to one of claims 1 to 5, characterized i characterized in that the carrier (32) has a cutting device (36) for the cast body (P1) carried by the gripper (31), wherein the gripper is arranged to engage the body in at least one of its pivoting positions with the cutting device bring to. 8. Apparatus according to claim 7, characterized in that that the frame-like gripper (31) has a pivotable longitudinal j side piece (40)., and that on the carrier (32) an essentially i borrowed horizontal cutting frame (56) is provided by the the cast body (P1) carried by the gripper can be lifted, | after it has been folded into an edged with and by means of the gripper Layer has been swung open and after the long side piece. (40) of the gripper is pivoted to the side in this position of the latter has been. - ■ 9. Apparatus according to claim 8, characterized in that the cutting frame (56) opposite the carrier (32) between an effective and an ineffective position is movable. 309811/0793