EP1681149A2 - Plant for manufacturing pot-like concrete bodies - Google Patents

Abstract

The system has a mold movable between a filling position and a depositing position with an outer casing (12) and an inner mold core (14) forming a mold cavity for filling with concrete. In the filling position the upper side of the concrete-filled cavity can be covered by a floor (48) that can be clamped to the mold, which can be coupled to a turning device. The mold has a frame (20) that can be coupled to the mold core, at least in the filling position, and which the turning device can engage. An independent claim is also included for a mold for an inventive system.

Description

The present invention relates to a plant for the production of pot-like concrete parts, in particular shaft floor pieces. It comprises a forming device which can be turned between a filling position and a storage position and has an outer mold jacket and an inner mold core for forming a mold cavity which can be filled with concrete between the mold jacket and the mold core. In the filling position, the upper side of the mold cavity filled with concrete can be covered by a subfloor that can be braced with the molding device. Furthermore, the shaping device can be coupled with a turning device for turning the shaping device out of its filling position into its storage position.

Manhole bottoms, are the wastewater technology as the bottom part of a shaft and are usually equipped with recesses for at least one inlet and a spout for connecting pipes for the water supply. So that the wastewater can flow through the shaft bottom piece with the most favorable flow possible, a channel corresponding to the outlets must be installed in the shaft bottom piece. For the production of manhole bottoms, essentially two manufacturing processes have been developed, which are applied depending on the height of the manhole bottom and the size of the apertures, namely the production in the turning process and the production in head position. The present invention relates to a turn-table plant.

In the turning method described, for example, in DE 34 42 518 A1 and DE 195 40 454 A1, the concrete is filled into a mold which is in the head position, ie in the position opposite the position of use of the manhole bottom piece, and compacted there. Then the mold is covered with an underbody and clamped. Subsequently, the mold is turned by 180 ° in the position of use of the manhole bottom piece.

Finally, the manhole bottom piece is disengaged by an upward movement of the mold and transported to a storage location for curing.

Before turning the individual parts of the molding device, in particular the mold shell and the mandrel, must be fixed to each other. In the aforementioned conventional systems, this is done by manually operated clamping elements, each attacking the mold shell and underbody, or on the mold shell and a correspondingly wide-extending bottom flange of the mold core or connected to the mold core bottom plate of the mold. After fixing the parts of the molding device to each other, the turning of the molding device including mold shell, mold core and subfloor by means of an acting on the mold shell turning bar, for example, the embodiment of the mold device from two opposite sides embracing frame-like crane structure.

In order to achieve further automation of the manufacturing process, systems have been developed in the past in which the mold core and mold shell are mounted as an inseparable solid unit on a common base plate. After filling the mold cavity thus formed with concrete, the subfloor is placed in this system and clamped by means of hydraulically operated quick clamping devices with the mold jacket (see, for example, the ROTOMAT system Baumgärtner).

DE 199 12 829 B4 discloses a further system which operates according to the reversing method, in which the mold cavity is formed from a mold core standing on a base plate and a mold jacket. The mold jacket is clamped when filling with concrete by motor-operated clamping devices with the base plate. The base plate is firmly connected to the mold core and stands on a vibrating table. After filling the mold with concrete and compacting the concrete, an underbody is placed. In this system includes the turning device a plurality of clamping elements, which serve to clamp the mold shell with the lower floor and the mold shell with the base plate of the mold core. The turning device engages with these clamping members at the said connection points of the molding device and thus holds these together their individual parts when turning as a unit.

Also known from DE 36 11 394 C2, a working after the reversing system is known in which the mold cavity is formed from a mold core with wide-extending bottom flange and a clampable with the bottom flange mold jacket. On the mold jacket is hinged a common lifting and locking device for clamping the mold shell with the mold core during filling and displacement of the mandrel relative to the mold shell during removal of the molding arranged. In accordance with the conventionally known principle, in this system both the turning device and a lifting device for removing the shaping device from the molded article engage directly on the forming jacket.

In the conventionally known systems, there is the problem that the parts forming the mold device must be fixed to each other before turning the mold device, which is done manually or can only be motorized by a considerable design effort. Alternatively, substantially integrally formed molding devices can be used, but their use is correspondingly inflexible and brings manufacturing disadvantages.

Object of the present invention is to develop a generic system such that it allows optimum manufacturing capabilities and in particular a flexible use of the system for producing different manhole shapes with minimal design effort.

According to the invention, this object is achieved by a plant for producing pot-like concrete parts, in particular Manhole bottom pieces, comprising a reversible between a filling position and a storage position forming device having an outer mold shell and an inner mold core to form a concrete fillable mold cavity between the mold shell and the Formkem, wherein in the filling position, the top of the filled with concrete mold cavity by a with the molding device can be covered and the forming device can be coupled with a turning device for turning the molding device from its filling position into its storage position. In the system according to the invention, the molding device comprises a mold frame that can be connected to the mold core, at least in the filling position, on which the turning device engages.

The filling position defines a position of the former in which the formed article is in the head position, i. in relation to the position of use of the manhole bottom piece reverse position is located. The storage position is in contrast the position in which the forming device is turned by the turning device by 180 ° in the position of use of the manhole bottom piece, wherein after turning the blank on the mounted underbody (bottom pallet) rests.

In the proposal according to the invention, the mold frame forms a substantially one-piece or consisting of a plurality of firmly interconnected parts of the basic frame, which forms the framework of the molding device, so to speak. Accordingly, all further elements of the shaping device, in particular those which serve for shaping, are accommodated in or attached to the mold frame. All forces occurring during the manufacturing process are introduced into the mold frame.

This solution has the advantage that all force application points on the mold frame can attack. On the one hand, all the means provided for moving the molding device as a whole, For example, a lifting device for lifting the mold from a pit after filling with concrete or to remove the mold from the molding after turning, or attack the turning device directly to the correspondingly stable shaped frame. In particular, the swivel axis defining the turning bearings, act on the large forces during the turning process, may be formed on the mold frame. In addition, the attachment of all those components of the molding device that define the shape of the concrete molding to be produced, done in a structurally simple manner on the mold frame, the position of these parts remains relative to each other during the entire manufacturing process.

A very particular advantage of the solution according to the invention results from the fact that the system can work with only a single predetermined mold frame, in which mold elements of different types can be added or attached. The system can therefore be flexibly used for concrete parts of various shapes and can easily be converted to produce different concrete parts. Neither the control processes nor the corresponding force introduction or actuators need to be re-equipped, as long as the same type of mold frame is used.

Since, in particular, the mold jacket is receivable in the mold frame, wherein it is preferably inserted into the mold frame and / or pulled out of this, it is easily possible to produce concrete parts with different Außenendurchmessem or outer shapes by simply inserting and pulling out of the mold jacket with otherwise unchanged investment is replaced. This makes it possible to quickly retrofit the system during an ongoing production cycle and to use it for the production of concrete parts of various shapes. Normally, a mold jacket is inserted in the filling position in the mold frame from above or pulled upwards.

Since the use of a mold frame makes it readily possible to clamp the subfloor (for example a floor pallet) to be placed on the mold cavity after filling with concrete and compaction directly on the mold frame, with suitable design of this clamp, e.g. by acting on the underbody clamping lever of a clamping element also engages the upper flange of the mold shell, thereby simultaneously the mold shell are secured in position relative to the mold frame, so that a separate attachment of the mold shell on the mold frame is not absolutely necessary or by a correspondingly simple structure and quickly releasable construction can be made. This also contributes to a significantly improved flexibility.

For attachment of the subfloor to the molding device is preferably used at least a first clamping device which engages on the one hand on the underbody and on the other hand on the mold frame and / or the mold shell. As already mentioned, the variant in which the first clamping device acts on the mold frame has the advantage that, during clamping of the underbody to the mold frame, fixation of the mold jacket on the mold frame can take place at the same time. Nevertheless, it may well be desirable to additionally or alternatively clamp the subfloor to the mold jacket.

Since the mold shell should be easily replaceable, but the mold frame is usually used again and again, it is also advantageous if the motor-operated actuators of the first clamping device are mounted on the mold frame and interact with corresponding engagement members on the subfloor.

After transferring the molding device into its storage position, so that the molded article now rests on the subfloor, the molding device is removed from the molding. To keep the throughput of the plant as high as possible, this happens as soon as possible after turning (after sufficient hardening of the molding), with suitable types of concrete often even immediately after turning. For this purpose, the installation can comprise a corresponding lifting device (eg a lifting crane with a U-shaped frame which spans the forming device) for removing the forming device from the molded article in the delivery position, wherein preferably the lifting device also engages the forming frame. Since all other mold components can be attached to the mold frame, a single point of application of the lifting device on the mold frame is therefore sufficient to pull off the entire mold device. The point of application can even be identical to the point of application of the turning device (the bearing points defining the pivot axis), for example if a corresponding crane cross-piece is used which acts on the pivot bearing points on the molding device.

It is also conceivable that the lifting device in each case has its own attack points on the individual mold components, so that, if appropriate, each mold component (for example mold core and mold jacket) can be removed separately from one another.

In many cases, it will also be advantageous if the system has at least a second clamping device for clamping the mold shell with respect to the mold core in a position of the mold shell in which it defines the mold cavity during filling, (hereinafter also fully inserted position or receiving position of the mold shell called). Basically, by a suitably suitable arrangement of the mold components to each other, for example, the adjoining edges of mold jacket and bottom plate or bottom flange of the core while supporting the mold shell through the mold frame already achieved sufficient fixation of the mold shell for fixing the mold cavity when filling the mold cavity with concrete be without the coat is attached to the mold frame in any way. As an additional measure, however, it may well prove to be useful to the mold shell with respect to the mold core by a secure further active clamping element. This is particularly suitable because such a motor-operated clamping member can be readily attached to the mold frame, so that the second clamping device on the one hand on the mold frame and on the other hand on the mold shell (on a cooperating with the clamping member of the mold frame engaging member of the mold shell) engages.

The attachment of the mold core to the mold frame can be designed such that the mold core is connected to the mold frame in any position of the mold device (filling position, storage position), wherein it is even conceivable that the mold frame is integrally formed at least with a base part of the core, so far not too frequent change of the mold core or its Sockeiteils is required. However, care should be taken that the mold core without too much effort, for example, to repair work, can be removed from the mold or is accessible from the outside.

A very particularly favorable application of the system results if, in addition, a locking device is provided, by means of which the mold jacket can be locked on the mold frame, if - after releasing the second clamping device - from a position of the mold shell, in which he defines the mold cavity during filling , (fully inserted position or receiving position), a displacement of the mold frame is effected relative to the mold shell by a predetermined distance. This locking device is then effective when, after transferring the filled molding device to its storage position (ie after turning by 180 °) and, if necessary, a certain curing of the molding, the molding device is removed from the molding. When removing the molding device, it has been shown that it is advantageous if initially only the mold core is raised by a few centimeters and at the same time allows air to flow into the now formed cavity between the mold core or mold frame and the molding to better To enable detachment of the mold from the molding. These Function can be achieved by the locking device in an elegant manner, when the removal of the mold - if the mold jacket is not then attached to the mold frame - initially only the mold frame is raised with the mold core until after a distance of a few centimeters, the locking device is effective, thereby now the mold jacket is attached to the mold frame and is moved during further stripping.

The locking device may comprise, for example, a projection element (for example a suitably shaped projection or a bolt or the like) associated with the one element of mold jacket and mold frame which, when displaced by the predetermined distance, forms a corresponding stop element formed on the other element of mold jacket and mold frame (For example, a correspondingly shaped projection or flange or a recess) engages. For example, it is possible with only little design effort to provide an inwardly projecting pin on the mold frame so that the mold jacket can be fully inserted into its defining the mold cavity during filling position (receiving position), but in a subsequent backward movement of the mold shell relative to the mold frame a stop on the mold shell comes into contact with the bolt of the mold frame. For example, it can be provided that the mold jacket has an outwardly projecting bottom flange with a recess which is guided over the bolt during insertion of the mold shell into the mold frame. Twisting the mold jacket after reaching its fully inserted position a little, it is ensured that the mold jacket can not be pulled out again without coming into abutment with the bolt. Alternatively, it would be conceivable, for example, to insert the bolt on the mold frame insertable or pulled out or to attach the bolt on the mold shell. When the bolt is arranged on the mold frame, there is also the advantage that a corresponding extension or retraction of the bolt from the outside is very easy can be accomplished, for example, when the mold jacket is replaced.

When moving back the mold shell in its receiving position, it is advantageous if a damping device is provided which exerts a relative movement damping force in a displacement of the mold shell relative to the mold frame back into its position defining the mold cavity during filling. The mold shell, which moves back into its receiving position due to its weight after the peeling and turning back the molding device in its filling position, then does not hit at high speed, but slides back gently. This avoids unnecessary stress on the mold frame and also largely suppresses otherwise unavoidable loud impact.

In principle, a spring acting between the mold frame and the mold jacket is sufficient to slow down their relative movement to one another. Damping of this relative movement can be achieved even better if the damping device is designed as a fluid shock absorber, which has, for example, a lifting element coupled to the mold jacket, which dips into a container filled with a suitable fluid (for example hydraulic fluid), which is located on the mold frame is arranged. It goes without saying that a reverse arrangement is also conceivable.

The lifting element is expediently prestressed, for example by a suitable spring element (for example a helical spring arranged concentrically around the lifting element), in its extended position in which it only minimally immerses itself in the fluid. Alternatively, it is also conceivable that the lifting element is actively acted upon by an actuator with force and between its extended position and its retracted position is movable.

The mold jacket can be formed integrally as well as in several parts be formed, in the latter case, each part on the mold frame can be locked and / or possibly be clamped to the mold frame. If each part of the mold shell (for example, individual peripheral sections of the mold shell) can be locked or clamped individually on the mold frame, it is understood that these parts can be replaced individually. But structurally simpler it is also possible that only one of the parts on the mold frame can be locked or clamped, with a backup of the other mold components then by a suitable clamping or wedging of the moldings (for example, by correspondingly form-fitting contact surfaces) to each other.

The first and / or second clamping device is favorably designed as a quick-release device, so that a quick clamping and releasing of the mold components is possible. It is advantageous if the quick release device is motor-actuated, ie in particular fluidly, pneumatically or by electric motor actuated by an appropriately operable force device with retractable in extension position / retractable in shortening position actuator, which can be indirectly or directly brought into clamping engagement with a clamping lug of the respective associated element is. The power device with actuator is in this case preferably attached to the mold frame. The use of such motor-actuated force devices, as they are already known in the art, allows a high degree of automation of the manufacturing process, so that hardly any manual intervention is required, whereby both the throughput of the system is significantly improved as well as the labor required for this is reduced. Since the power device can be readily associated with the mold frame, it is not necessary to convert the system with respect to the first or / and second clamping device when changing the elements of the mold shell for producing different concrete parts, as still the same mold frame can be used.

The mold core preferably comprises a vibrating device, by means of which the concrete filled into the mold cavity is compacted. In this case, the vibrating device can be designed, for example, as an eccentric vibrator integrated in the mold core. It is then turned together with the molding device and removed from the molding. Also conceivable is an alternative arrangement in which the mold frame stands on a vibrating table, which is decoupled from the mold frame before turning the molding device.

The mandrel may be integrally formed in the simplest case, but it will generally be more favorable if the mandrel is assembled from a plurality of core elements. In particular, in the event that a vibrator is integrated in the mold core, the latter embodiment will be cheaper, for example, for repair and maintenance purposes, to easily have access to the vibrator. In addition, it allows a multi-part design, the core different shape elements for the formation of various inner formations or gutter structures, such as radial openings of different inner diameter to form different channels or the like form. An attachment of the individual core components to each other can also be done with the aid of quick-release devices, as mentioned above, for example by a Gerinnekernelement can be fastened by means of a quick-release device to a base core element. The base core element can in turn be firmly connected to the mold frame, as long as frequent replacement of the base core element does not appear necessary.

Since the filling of the molding device with concrete is preferably done in a pit, it is also advantageous if a lifting device is provided, through which the molding device is movable in its filling position and / or in its storage position in the vertical direction. Thus, the mold can be lowered for filling in the pit, are raised after placing the subsoil first, then in their Filing be turned and transported to the storage area. Of course, this lifting device may also be formed identically to the previously mentioned lifting device for removing the molding device from the molding, for example as a crane crossmember.

Preferably, the mold shell is in its position in which it defines the mold cavity during filling, (also called receiving position) biased in the mold frame. The receiving position here denotes that position of the mold shell in which it is completely inserted into the mold frame. The bias in this position is such that in the receiving position, a force is exerted on the mold shell, which seeks to move it out of the receiving position again. In order to hold the mold jacket in the receiving position, accordingly, an additional locking or clamping is necessary, which can be achieved for example by the first and / or second clamping device. This variant offers (especially in the presence of a second clamping device) the advantage that a change of the mold jacket is very easy and fast, since after release of the second clamping device, the jacket already jumps out of its receiving position. Another advantage arises in cooperation with the locking device after discontinuation of the molding device with the molding in the receiving position, since the bias of the mold shell ensures that after releasing the first clamping device and, if necessary. The second clamping device of the mold frame with the mold core against the molding and the mold shell is slightly raised so that air can flow into the cavity formed. As a result, the removal of the molding is facilitated.

The bias may be effected by suitable biasing elements (eg, springs). In the event that for damping the movement of the mold shell relative to the mold frame back into the receiving position of the mold shell, a damping device is provided which is biased by a spring element such that they are normally in is extended state, this spring element and the bias of the mold shell can be generated in its receiving position.

The invention also relates to a molding device per se, which can be used in a plant operating according to the turnaround method for producing pot-like concrete parts, in particular manhole bottoms. According to the invention, the molding device is designed according to the preceding description.

Fig. 1

eine perspektivisch Ansicht einer Formeinrichtung für eine erfindungsgemäße Anlage, wobei die Formeinrichtung sich in der Füllstellung befindet und schräg von unten gesehen wird,

Fig. 2

eine weitere perspektivische Ansicht der in Fig. 1 gezeigten Formeinrichtung aus der Sicht schräg von oben, die entlang der Linie 2-2 in Fig. 1 geschnitten ist,

Fig.3

eine weitere perspektivische Ansicht der in Fig. 1 gezeigten Formeinrichtung schräg von oben, die entlang der Linie 3-3 in Fig. 1 geschnitten ist,

Fig. 4

eine Schnittansicht entsprechend dem Schnitt 3-3 in Fig. 1, wobei sich die Formeinrichtung in Füllstellung mit aufgesetzter Bodenpalette und vollständig geschlossenen Spannorganen befindet,

Fig. 5

eine Schnittansicht entsprechend Fig. 4, wobei sich die Formeinrichtung in ihrer Ablagestellung mit vollständig geöffneten Spannorganen befindet und der Formrahmen zusammen mit dem Formkern geringfügig vom Formling abgezogen ist, und

Fig. 6

eine seitliche Aufrissansicht der Formeinrichtung mit aufgesetzter Bodenpalette aus der Sicht von links hinten in Fig. 3 (siehe Pfeil).

The invention will be described below in detail with reference to an embodiment with reference to the accompanying drawings. It shows:

Fig. 1

a perspective view of a molding device for a plant according to the invention, wherein the molding device is in the filling position and is seen obliquely from below,

Fig. 2

FIG. 2 is a further perspective view of the forming device shown in FIG. 1 as viewed obliquely from above, which is cut along the line 2-2 in FIG. 1, FIG.

Figure 3

FIG. 2 is a further perspective view, obliquely from above, of the forming device shown in FIG. 1, cut along the line 3-3 in FIG. 1, FIG.

Fig. 4

a sectional view corresponding to the section 3-3 in Figure 1, wherein the molding device is in filling position with attached bottom pallet and fully closed clamping members.

Fig. 5

a sectional view corresponding to FIG. 4, wherein the molding device is in its storage position with fully open clamping members and the mold frame together with the Mold core is slightly deducted from the molding, and

Fig. 6

a side elevational view of the mold with attached bottom pallet from the left rear view in Fig. 3 (see arrow).

Fig. 1 shows a perspective view of obliquely from below a forming device 10 for a plant for the production of manhole bottom pieces according to the present invention. The molding device 10 defines a mold cavity, which is bounded on its radially outer side by a mold shell 12 and its inner side by a mold core 14. The mandrel 14 is mounted on the inner base ring 16 of a mold frame 20. The inner base ring 16 is formed on its outer side stem-shaped with six circumferentially at the same distance consecutive radially outwardly facing projections 18. On the projections 18, an outer base ring 22 of the mold frame 20 is attached. On the outer base ring 22 of the mold frame 20, the outer shell construction of the mold frame 20 is constructed.

The outer shell construction of the Förmrahmens 20 comprises on the one four in the longitudinal direction of the shell of the molding device 10 extending support 24 (two of which can be seen in Fig. 1), on each of which a lifting cylinder 28 and a clamping member 30 formed first clamping device is mounted and in each case one of a lifting cylinder 44 and a clamping element 46 formed second clamping device is mounted. On the other hand, the jacket construction of the mold frame comprises two diametrically opposite attachment structures 32, each with an opening 34 for forming a pivot bearing for a crane crossmember. At the opening 34 engages a turning bar, not shown, so that the connecting line of the centers of both openings 34 forms a pivot axis.

On the upper side in Fig. 1 of the jacket construction of the mold frame 20th attached to an upper cover flange 36 of the mold frame 20. To reinforce the cover flange 36 radially extending reinforcing ribs 38 and circumferential reinforcing ribs 40 are arranged on its underside. The cover flange 36 has a circular recess into which the mold shell 12 is inserted.

On the outer base ring 22 of the mold frame 20 four circumferentially equally spaced brackets 42 are mounted for each lifting cylinder 44 of the second tensioning device. The lifting cylinder 44 actuates the tensioning lever 46 in order to fix the molding shell 12 to the form frame 20.

Fig. 2 shows the molding device 10 shown in Fig. 1 from the perspective obliquely from above, in addition, a patch on the cover flange 36 of the mold frame 20 bottom pallet 48 can be seen. In this as well as in all the following figures, such reference numerals, which are identical to reference numerals shown in FIG. 1, correspond to the same parts of the molding device 10. To avoid repetition, reference is made in each case to the description of these parts with reference to FIG.

In Fig. 2 it can be seen that the concrete cavity to be filled with the molding device 10 is formed by the outer surface of the multi-part mold core 14, the inner surface of the mold shell 12, the inner surface 50 of the bottom pallet 48 and one in the filling position shown in FIG the lower edge of the mold cavity bounding, step-shaped annular surface 52 for forming an upper sleeve of the finished manhole bottom piece.

The mold shell 12 is inserted from above into a circular opening of the cover flange 36 of the mold frame 20, so that a rectangular projecting upper Begrenzungsflansch 56 of the mold shell 12 rests on the top of the upper cover flange 36. A projecting lower boundary flange 54 of the mold shell 12 lies on a damping element 57 of the outer base ring 22 of the mold frame 20.

The bottom pallet 48 has a lower flange 58 which rests on the upper flange 56 of the mold shell 12. The clamping lever 30 of the first clamping device presses both the upper flange 56 of the mold shell 12 and the lower flange 58 of the bottom pallet against the cover flange 36 of the mold frame 20th

The mold core 14 is formed from several parts which are coupled to one another via corresponding quick-release connections (see also FIGS. 3 and 4). In the interior of the mandrel 14, a vibrator 60 is arranged, which is formed in a conventional manner as Exzenterrüttler.

Furthermore, a bolt 62 formed on the support 24 of the shell construction of the mold frame 20 can be seen in FIG. 2, which protrudes so far inward in the radial direction that it overlaps with the outwardly projecting radial flanges 54, 56 of the mold shell 12, but not reaches to its inner surface 64. In the lower radial flange 54 of the mold shell 12, a recess 66 is formed, which allows the mold shell 12 passes the projection 62 when inserted into the mold frame 20. In the fully inserted state of the mold shell 12 (ie, when in the filling position of the mold is defined by the mold cavity in the receiving position of the mold cavity according to the dimensions of the molded article) is the projection 62 still a good distance from the top of the filling position shown in FIG 2 lower flange 54 of the mold shell 12 is removed. However, if after the turning of the molding device 10 in its storage position of the mold frame 20 is withdrawn together with the mold core 14 attached thereto from the molding, without first the mold shell 12 is pulled, the projection 62 comes into abutment with the bottom in Fig. 2 flange 54th the mold shell 12 and then takes this with. On this way, the entire mold is withdrawn.

In order to be able to easily insert the mold jacket 12 into the mold frame 20 in the filling position, a bayonet-type insert mechanism or closure may be provided, for example, in which the mold jacket 12 is inserted in an orientation in which the projection 62 fits into the recess 66 and after reaching its final position, ie the receiving position, is slightly twisted. Alternatively, it is also conceivable to keep the projection 62 during insertion of the mold shell 12 in a retracted position and to bring only in an advanced position when the mold shell 12 is in its receiving position.

Fig. 3 shows a corresponding perspective view as shown in FIG. 2, wherein the molding device 10 is shown in section along the line 3-3 in Fig. 1.

In addition to the illustration in Fig. 1 and 2 can be seen in this figure, the position of the first clamping devices consisting of lifting cylinder 28 and clamping lever 30 in the closed state and the second clamping devices formed from lifting cylinder 44 and clamping cylinder 46 in the closed state. The lifting cylinders 28 are mounted on the carrier 24 of the mold frame 20 and act on a substantially C-shaped clamping lever 30, one end of which is also attached to the carrier 24 of the mold frame 20. The C-shaped lever is articulated by the lifting cylinder 28 at a location midway between its ends so that it rotates about its bearing point on the carrier 24 when the lifting cylinder is extended. The other end of the C-shaped clamping lever 30 then presses both the upper flange 56 of the mold shell 12 in FIG. 3 and the bottom flange 58 of the bottom pallet 48 against the cover flange 36 of the mold frame 20.

The lifting cylinder 44 of the second clamping element is connected to a shoulder 42 of the outer base ring 22 of the mold frame 20 is mounted and acts on a clamping lever 46 which braces the mold shell 12 with the mold frame 20 in the extended state of the lifting cylinder 44 shown in FIG. For this purpose, the mold shell 12 each has a clamping element 46 associated with a longitudinally extending radially projecting rib 68 with an opening into which a nose of the clamping lever 46 engages in the closed state.

In addition, it can be seen in Fig. 3, the rib-shaped mounting structure 32 for the point of application of a turning device or a lifting device. For this purpose, an opening 34 is formed on the mounting structure 32, which receives a pivot bearing pin of a crane cross member, not shown.

FIG. 3 also shows the multi-part construction of the mold core 14 with eccentric vibrator 60 arranged therein. In particular, it can be seen that the mold core 14 has on its upper side a channel element 70 which is connected to its base element by quick-action clamping devices.

Fig. 4 shows a sectional view again the cut in Fig. 3 shown surface. The situation corresponds to that of FIG. 3, in which the molding device 10 is in its filling position, the bottom pallet 48 is placed and both all first and all second clamping devices are closed. To avoid unnecessary repetition, reference is made to the description of FIG. 3.

Fig. 5 shows the section of FIG. 4 in a situation in which the molding device 10 has been transferred to its storage position, that has been turned over 180 ° relative to the filling position shown in Fig. 4, and now the mold assembly 10 disposed on the bottom Floor pallet 48 is resting. In addition, in the situation shown in Fig. 5, all first clamping devices and all second clamping devices are already open. After loosening the first clamping devices 28, 30 by retracting the Lifting cylinder 28 with a corresponding rotation of the C-shaped clamping lever 30, the mold frame 20 is clamped neither with the bottom pallet 48 nor with the bottom in Fig. 5 flange 56 of the mold shell. After releasing the second clamping devices 44, 46 by retracting the lifting cylinder 44 with a corresponding rotation of the clamping lever 46 and the tension of the upper flange 54 of the mold shell 12 in FIG. 5 is solved with the mold frame 20.

Pulling in this position the mold frame 12 with the attached mold core 14 upwards from the molding, so first the mold shell 12 remains on the bottom pallet until the provided on the mold frame 20 bolt 62 in abutment with the underside of the upper in Fig. 5 Projection 54 of the mold shell 12 passes. In this position, the mold jacket 12 is then taken on further pulling up of the mold frame 20, so that the entire mold device 10 is subtracted from the molding, which now rests only on the bottom pallet 48.

5 also shows a damping device which is formed from a cylinder 74 with a reciprocating piston 72 insertable therein. The reciprocating piston 72 cooperates with the in Fig. 5 upper side of the mold shell 12 formed on the flange 54, wherein the not immersed in the cylinder 74 end of the reciprocating piston 72 rests against the flange 54 to exert a pushing force thereon. To the reciprocating piston 72 around a coil spring 76 is arranged, which biases the reciprocating piston 72 such that it is normally, ie without further application of force, in its extended position. Thus, the spring 76 counteracts a movement of the mold shell 12 in its receiving position in the mold frame 20. Typically, the cylinder 74 contains a suitable damping fluid (eg, hydraulic fluid) which damps the vibration of the spring 76 so that movement of the mold shell 12 relative to the mold frame 20 is absorbed by the damper and a high impact is avoided.

Since the spring 76 is disposed between the upper flange 54 of the mold shell 12 and the outer mold ring 22 of the mold frame 20 in FIG. 5, the closer the flange 54 of the mold shell 12 and the outer base ring 22 are, the more taut it is. the further the mold jacket 12 is inserted into the mold frame 20. So it is maximum curious when the mold shell 12 is in its receiving position in the mold frame 20. When the tensioning levers 46, 30 are released, the spring 76 causes the shaping frame 20 to move axially relative to the molding shell 12 until the bolt 62 comes into abutment with the flange 54.

By the spring 76 a limited by the stop of the bolt 62 with the flange 54 displacement of the mold frame 20 with the mold core 14 attached thereto is already effected or supported relative to the molding with a fixed mold jacket. In this way, air can flow into the newly formed cavity between molding and mandrel 14, without a tensile force is applied to peel off the entire molded article. As soon as sufficient air has flowed in, the entire molding device 10 including mold jacket 12 can be very easily removed from the molding.

In addition, the spring 76 also facilitates the exchange of the mold shell 12, if a different outer shape of the concrete molding is desired. In order to perform such a change - usually in the filling position without an applied bottom pallet - only need the clamping lever 46 (bzw.30, if closed) are opened so that the mold shell 12 jumps out of its receiving position slightly upwards by the force of the spring 76 and can be easily removed from the mold frame 20.

Finally, FIG. 6 shows the molding device 10 according to FIGS. 1 to 5 in an elevational view, as seen from the direction from the rear left in FIG. 3 with an arrow. For the description of the individual in FIG shown components can be made to the statements made under the corresponding reference numerals with respect to the preceding figures.

Claims (18)

Plant for the production of pot-like concrete parts, in particular shaft floor pieces, comprising
a forming device (10) which can be turned between a filling position and a storage position and has an outer mold jacket (12) and an inner mold core (14) for forming a mold cavity which can be filled with concrete between the mold jacket (12) and the mold core (14),
wherein in the filling position, the upper side of the mold cavity filled with concrete can be covered by a subfloor (48) which can be braced with the forming device (10), and
wherein the shaping device (10) can be coupled with a turning device for turning the shaping device (10) out of its filling position into its stowed position,
characterized in that
the molding device (10) comprises a mold frame (20) which can be connected to the mold core (14) at least in the filling position and on which the turning device engages. Plant according to claim 1,
characterized in that
the mold shell (12) in the mold frame (20) is receivable, preferably in the mold frame (20) can be inserted and / or pulled out of this. Plant according to claim 1 or 2,
characterized in that
the subfloor (48) can be clamped to the forming device (10) by means of at least one first tensioning device (28, 30) which engages, on the one hand, the underbody (48) and, on the other hand, the forming frame (20) and / or the molding shell (12). Plant according to one of claims 1 to 3,
marked by
a lifting device for removing the molding device (10) from the molding in the storage position,
wherein preferably the lifting device on the mold frame (20) engages. Plant according to one of claims 1 to 4,
marked by
at least one second clamping device (44, 46) for clamping the mold jacket (12) with respect to the mold core (14) in the receiving position of the mold shell (12), in which it defines the mold cavity during filling. Plant according to claim 5,
characterized in that
the second clamping device (44, 46) engages, on the one hand, on the mold jacket (12) and, on the other hand, on the mold frame (20). Plant according to one of claims 1 to 6,
characterized in that
the mold core (14) is connected both in the filling position and in the storage position with the mold frame (20) or is formed integrally with the mold frame (20). Plant according to one of claims 1 to 7,
marked by
a locking device (62), by means of which the mold shell (12) on the mold frame (20) can be locked, if - optionally after loosening the second clamping device (44, 46) - from a position of the mold shell (12) out in which this the mold cavity defined during filling, a displacement of the mold frame (20) relative to
Form jacket (12) is effected by a predetermined distance. Plant according to claim 8,
characterized in that
the locking device (62) comprises a projection element (62) associated with the one element of the mold jacket (12) and the mold frame (20), which is displaced by a predetermined distance into a corresponding one on the other when the free wall (12) is displaced relative to the mold frame (20) Element of mold shell (12) and mold frame (20) formed stop element (54) engages. Installation according to one of claims 8 or 9,
marked by
a damping device (74) which, in the case of a displacement of the mold shell (12) relative to the mold frame (20), exerts a force dampening the relative movement back into its position defining the mold cavity during filling. Plant according to one of claims 1 to 10,
characterized in that
the mold shell (12) is integrally formed. Plant according to one of claims 1 to 11,
characterized in that
the mold shell (12) is designed in several parts, wherein each part of the mold shell (12) on the mold frame (20) lockable and / or possibly with the mold frame (20) is clamped. Plant according to one of claims 3 to 12,
characterized in that
the first (28, 30) and / or the second clamping device (44, 46) is designed as a quick-release device. Installation according to one of claims 1 to 13,
characterized in that
the mold core (14) comprises a vibrator (60). Installation according to one of claims 1 to 14,
characterized in that
the mold core (14) can be joined together from a plurality of core elements. Plant according to one of claims 1 to 15,
marked by
a lifting device by which the molding device (10) in its filling position and / or its storage position in the vertical direction is movable. Plant according to one of claims 1 to 16,
characterized in that
the mold shell (12) in its position in which it defines the mold cavity during filling, is biased in the mold frame (20). Molding device for a plant for the production of pot-like concrete parts, in particular manhole bases, mi the features of any one of claims 1 to 17.

Images