DK171553B1 - Method for fitting mould equipment in a concrete block making machine, together with casting machine and mould equipment for use therewith - Google Patents

Description

DK 171553 B1 i

Method of mounting a molding equipment in a block brick machine, as well as a molding machine and molding equipment for use therewith.

The present invention relates to a block stone machine and molding equipment therefor. In order to produce variously shaped concrete blocks in such a machine, molding equipment consisting of molds having respective, specially shaped molding cells and associated holding units is used in the form of a plate with protruding, fixed presser foot sections with lower, horizontal printing plates suitable for the shape of the molding cells, so that all of these pressure plates can simultaneously be inserted into the molding cells. The mold is placed on a molding surface and during each operation concrete mass is filled in all the mold cells by sliding a filling trolley or the like with concrete over the top surface of the mold and again being withdrawn therefrom, after which the restraint from a sea emergency position is lowered over the molding for pressing the pressure plates. the concrete mass in each of the casting cells while vibrating the preform. This compresses the concrete mass. When the product height is reached, the hold is held in its lower position and the mold is pushed upwards so that the formed block pieces are released, and finally the hold is also lifted from its holding engagement with these pieces, after which the items with cast plate are automatically removed from the production site. The mold is lowered to its working position on the casting surface and a new work cycle is started.

The means for holding and vertical movement of the mold must be arranged and controlled with great accuracy in relation to the means supporting the restraint, so that its pressure plates, when the restraint is down, migrate down into the mold cells without hitting the upper edges thereof. Most often, a clearance 35 of only approx. 0.5 mm between the outer edges of the pressure plates and DK 171553 B1 2 the surrounding walls of the molding cells, and the tolerance for the control is considerably finer.

The considered retaining means are made of powerful machine parts which can be very easily held and controlled with great accuracy. The rest will then be a matter of the mold parts being fixed with the same accuracy to the holding means, and it is important here that it should be possible to switch between different molds so that it is not an exact fitting once and for all.

The mold is conveniently provided with laterally projecting flanges formed with precisely positioned holes for accommodating stresses on the associated guided raising / lowering means, while the retainer is attached to an overhead support head which is positioned and controlled quite accurately relative to the molding holding means. This support head is traditionally formed with precisely positioned bolt holes for receiving clamping bolts for securing the top plate of the retaining bracket, this plate 20 being similarly configured with precisely positioned bolts or bolt holes so that the desired result will be obtained when the mold and the retaining bolts are fixed, respectively - use of the already prepared bolt holes.

However, in practice there are two significant problems, namely that it is a difficult and time-consuming task to carry out the actual tensioning of the restraint on the support head, and secondly that the bolts or bolt holes must be placed with said great accuracy.

The invention has for its object to provide a structure by which these conditions are facilitated.

This is achieved according to the invention in that the holding means of the supporting head are formed by protruding, clamping gripping means which are profiled to receive correspondingly profiled upright engagement means on the upper side of the retainer, so that the retainer can be mounted on a supporting housing by a horizontal insertion movement with subsequent clamping of the bearing head gripping means for effective clamping of the retainer engagement means. This insertion is carried out with the counter-engagement with the mold and with the pressure plates centered in the mold cells, namely by placing spacers between selected edge regions of the pressure plates and the associated wall portions of the mold cells concerned. The insertion of the mold with the restraining seat in is carried out until the mold is in position for attachment to the corresponding holding means of the machine, after which this attachment is performed, in which the whole mold set is placed in a reference position relative to the machine. At the same time, the retaining means of the resistor will be brought to a "floating" engagement position relative to the gripping means of the support head, and when the gripping means are subsequently activated to fix this engagement position, the retention means will automatically be secured to the machine in a correct position relative to the mold. . Then, the said spacers in the mold can be removed and the machine can be put into service.

Precisely because of the possible "fluid" engagement between the carrier head and the restraint, it is possible to completely disregard qualified tolerance requirements for the positioning of these tensioning means, since an accurate placement will be obtained anyway, namely because of the temporarily established primary centering of the restraint relative to the the mold and the primary orientation of the mold relative to the machine and the lapse of these tolerance requirements 30 will already be a significant gain.

However, the invention provides a further, significant possibility, namely that the clamping of the head restraint can be carried out automatically, without the cumbersome operation of the previously used clamping bolts.

In the invention, no bolt tensioning is to be carried out, but only a pull-up of said gripping means, and such pull-up can be effected in simple grace by means of one or more working cylinders or corresponding simple moving and holding means. Such cylinders may very well be located and perform clamping tasks in manually difficult-to-reach locations, and it is thus an attractive result of the invention that the centered fastening of the retainer can be performed in a simple manner at suitable locations, even where otherwise difficult. available.

10 Furthermore, the time for mold change is significantly reduced, which means increased production, and the better and safer centering of the mold reduces the wear 'in the mold. BRIEF DESCRIPTION OF THE DRAWINGS The invention is explained in more detail below with reference to the drawing, in which Fig. 1 is a perspective view of parts of a block machine with a molding equipment adapted thereto; 2 is a side view, and FIG. 3 and 4 detail views of a fastener.

In FIG. 1 is indicated on the left side a couple of main parts of a block machine, namely supporting means 2 for holding a mold above a molding table 4 and an upper supporting head 6 for an underlying restraint to cooperate with the mold. On the right side is shown an associated molding equipment consisting of a lower molding mold 8 with continuous molding cells 10 and an upper head restraint 12 with protruding foot portions 14 which are molded into the molding cells and at the bottom have transverse printing plates 16 formed according to the cross-section of the molding cells and only 50 is a little less than this. The counter member has a top plate 18 to which the presser foot portions 14 are welded and the mold 8 has laterally projecting flanges 20 with bolt holes 22.

The supporting members 2 for the mold 8 are made up of opposing horizontal supports 24 which can support the flanges 20 of the mold and have clamping holes 26 for cooperating down the holes 22, so that the mold 8 can be clamped with the usual accurate positioning in relation to to the molding machine, even though it is not so important in the invention that this accuracy is particularly great.

5 The support pieces 24 are arranged in a height-movable manner in the machine, here indicated by the aid of an underlying vertical working cylinder 28. Conventionally, similarly, clamping holes 30 and 32 may be formed in lower flange parts 34 on the support head 6 and 10, the top plate 18 of the retainer 12. but such gaps are not used in the invention. However, it has such a character that these holes can be very well present, since the invention can be utilized by simple additions to existing machine and mold parts.

According to the invention, on the upper side of the retaining plate 18, some recessed C-profile pieces 44, which are open upwards and longitudinally towards the supporting head 6, are placed on this correspondingly some retaining pieces 46, which are fixedly mounted on the lower ends of the 20 piston rods are projected from respective fixed mounting cylinders 48. When these retaining pieces 46 assume a lower clearance, the profile pieces 44 can be freely inserted around the retaining pieces, cf. FIG. 3. The insertion is effected by the shape set 8,12 as shown in FIG. 2 is mounted on a carriage 50 which is driven onto it on a conveying surface 52 in front of the mold surface 4 itself, with the support head adjusted to such a height that the slotted retaining pieces 46 are precisely aligned with the inner grooves of the C-profile pieces 44, ie. these can be freely driven into positions in completely loose engagement with the retaining washers. In this inserted position of the mold set 8,12, first attachment of the mold 8 to the supporting pieces 24 is carried out, raising them to the relevant mounting level. Thereby, the position of the mold is determined in the molding machine.

It is important to note that prior to the insertion of the carriage 50, the retaining 12 has been centered relative to the mold by placing spacers 52 between edge regions of some of the printing plates 16 and the wall portions thereof of the molding cells 10, 5 a correct mutual position between the mold 8 and the head restraint 12 is ensured in a direct manner and thus not indirectly by the use of the clamping holes 30 and 32.

When the mold set 8,12 is brought into position and the mold 8 is clamped to the supporting pieces 24, the cylinders 48 are actuated to retract the retaining pieces 46, whereby as shown in FIG. 4, the upper profile flanges 54 of the C-profile pieces 44 will clamp up against the underside of the lower flanges 34 on the support head 6, so that the entire retainer 12 is thereby fixed to the support head in a correctly centered position relative to the mold. IN

the profile pieces 44 there is a certain slip of the holding pieces 46 in both longitudinal and transverse directions, so that the tolerance requirements here will be extremely modest.

After this clamping of the head restraint 12 to the support head 6, the spacers 52 can be removed, whereupon these portions 12 and 6 are freely displaceable in the height direction while maintaining an exact horizontal centering. Thus, a slight lifting of the mold 8 can be induced to release the carriage 50, after which it can be removed from the area. Thereafter, the mold 8 may be lowered to abut against the mold surface 4 and the head restraint 12 may be raised until there is sufficient space for introducing the aforementioned loading cart or frame for application of concrete pulp to the mold 8.

Thereafter, the casting machine can operate in the usual manner, with the retaining member 12 being downwardly compressed to compress the concrete mass in the individual molding cells 10 and subsequently retained for depressing the molded members against the molding surface 4, while the molding 8 is pushed upward from the casting members for release. of these for delivery along the conveyor path 52.

7 DK 171553 B1

The invention is, of course, not limited to the device shown, in which retractable retaining washers 46 are provided, e.g. as well, pull-up profile pieces can be worked, 5 which cooperate with fixed, upright holding heads on the retainer 12.

It is not strictly necessary to modify the support head 6 by the addition of parts 48, 46, as these may optionally be mounted on a separate support plate 10 which can be secured to the support head by bolting using the bolt holes 30. This will also enable the carrier head may alternatively be used in a conventional manner, which may be desirable in certain situations, which will not be described herein in more detail.

It may appear that interposing means may be desired between the underside of the carrier head 6 and the upper side of the head restraint 12, but this will also be possible in the invention, e.g. by clamping to the retainer 12 using the bolt holes 32, an upright structure 20 which carries top rails or pieces corresponding to the profile pieces 44 at the top.

It should be noted that the invention offers the particular advantage that it can be realized in a relatively simple manner also in connection with pre-existing casting machines, namely only with the mentioned modifications of the supporting head 6 and the retainers 12 respectively.

Claims (5)

A method of mounting a molding equipment 5 (8,12) in a block machine, wherein the method attaches a molding (8) with molding cells (10) to a vertically displaceable carrier (2) in a position above a molding surface (4). while the associated overhead retainer (12) having downwardly projecting presser foot portions (14) with lower end plates for entry into the molding cells is secured to an overhead, vertically movable support head (6) in such a position that the presser foot portions (16) upon lowering of the support head (6) relative to the mold (8) can be down-centered in the molding cells (10), characterized in that the molding equipment (8,12) is prepared for the mounting by placing the retainer (12) in a temporary fixed centered engaging position in the mold (8) by placing centering spacers (52) between selected edge regions of the endplates (16) of the presser foot members and the wall portions of the molding cells adjacent to these (10), and by pushing the molding equipment thus assembled (2) between the molding carrier (8) and said supporting head (6), the molding is brought to a position in which it can be immediately attached to the supporting device, and at the same time the restraint (12) to 25 a position in which upright engagement means (44) on the upper side of the head restraint are introduced for loose engagement with downwardly displaceable gripping means (46) at the underside of the support head (6), which gripping means (46) then actuated shooting for clamping the head restraint (12) to the supporting head 30 (6) in the center, relative to the mold (8), centering the position after which said spacers (52) are removed to release the mold parts for operational operation. Method according to claim 1, characterized in that the pre-assembled and internally centered molding equipment (8,12) is introduced into the mounting area by insertion on a movable support (50), thereby maintaining the supporting head (6) in such a height position that The upper engagement means of the restraint means (44) are provided for initial engagement with the gripping means (6) projecting from the support head (46). Blocking and tile machine for carrying out the method according to claim 1, characterized in that its support head (6) is provided with projecting, clamping gripping means (46) for liquid receiving of corresponding upright engagement parts (44). the restraint (12) in the inserted position thereof. 10 Blockstone machine according to claim 3, characterized in that the gripping means (46) are clampable by means of superimposed working cylinders (48). 15 Molding machine for a block machine according to claim 3, consisting of a lower mold (8) with molding cells (10) and an upper head restraint (12) with projecting footrests (16) for controlling the molding cells, characterized in that a upper plate portion (18) of the head restraint is provided with upright profile pieces (44) which, upon insertion of the forefoot centered overall molding equipment (8,12) into a mounting position in the block machine, may engage in fluid engagement with clamping gripping means (46) which is arranged downwardly from the underside of a vertically movable support head (6) in the molding machine.