EP2718070B1 - Block molding machine having a linearly guided support element - Google Patents

Description

The present invention relates to a block forming machine with a machine frame on which at least one lifting device for a support element is arranged, wherein the support element is movably mounted on the machine frame via a linear guide having at least one longitudinal guide element and a guide means cooperating therewith.

From the state of the art stone forming machines are known in various embodiments. For example, the US Pat. No. 4,725,214 An apparatus for the production of building blocks according to the preamble of claim 1. Essentially, it is about provide a stone form in a cyclic process, to fill a concrete amount in the mold cavities of the stone mold to compact the amount of concrete with a punch and / or a vibrator and then demoulding the resulting concrete end products, the so-called moldings. Various devices for compacting are known. For example, the DE 195 06 519 A1 an eccentric press and the DE 72 02 076 U a forging press with press frame.

It has proven useful to feed the stone forming machines with underlay pallets and to lower the stone form to the underlay pallets. In general, the stone form is formed as an upwardly and downwardly open shape.

The concrete amount is then filled from at least one concrete bunker in at least one filling car and inserted from there into the mold cavity of the stone mold. Subsequently, the sample pallet is moved by means of a vibrating unit and / or the stamp is lowered into the stone mold onto the fresh concrete. As a result, the concrete is compacted in the stone form. In the next step, the punch and the stone form are raised again and the base pallet with the moldings is removed from the stone forming machine.

To move the movable components such as the stone mold or the stamp, such stone forming machines today usually have at least one lifting device, such as a Hydraulic cylinder, up. This usually acts on at least one support element on the component to be lifted, such as a stone form or a stamp, a.

The support element may be designed in the manner of a crossbeam. It is usually on a linear guide on longitudinal guide elements, for example, waves out. For this purpose, it has at least one guide means cooperating with the longitudinal guide element, for example a slide bearing, a bush or the like.

In the past, it has been found that especially the heavy moving components such as the stone mold or the punch tend to jam or jam in their guides. By such tilting, for example, increases the wear of the bearing which in turn leads to reduced service life of the machine.

In order to avoid such problems as far as possible, the use of special lifting devices for the support elements has proven itself. These lifting devices usually consist of a drive which moves a compensating rocker fixed to the upper side of the machine frame in such a way that the support element connected via a connecting rod to the rocker is moved vertically along the longitudinal guides. In most cases, two lifting devices per support element arranged laterally on the machine frame are used in the prior art.

However, this known from the prior art solution requires a large number of moving parts and corresponding bearings and two drives per support element, which on the one hand significantly increase the manufacturing and acquisition costs for the stone forming machine and the associated maintenance and repair costs. On the other hand, the construction and design of such a machine is relatively complicated and results in a high space requirement for the individual components.

Against this background, it is the object of the invention to show a stone forming machine, which is simpler in construction with the same quality of leadership of at least one movable part and can be produced more cheaply.

The solution of the problem is achieved with a block molding machine according to claim 1. Advantageous developments of the invention are described in the subclaims.

The block forming machine according to the invention differs from the block forming machines described above in that a first longitudinal guide element is attached to the support element. The first longitudinal guide element is movably supported by a frame guide means arranged on the machine frame. On the machine frame is a second longitudinal guide element arranged on which the support element is movably mounted via a support element arranged on it guide means.

This has the advantage that the guide elements are no longer as previously in the guide direction at the same height, but are arranged spaced apart in the guide direction. This is based on the idea to use the height of the stone forming machine to achieve a wide spread of the storage of the corresponding support element. As a result of the solution which has now been presented, even in an extreme position of the support element, for example completely raised, it is possible to represent a distance between the frame guide means and the support element guide means, which corresponds at least to the thickness or height of the machine frame. Thus, the guide points of the support element in the vertical direction are always spaced apart, whereby the support element is spatially stabilized. Tilting when lowering or lifting the support element is thus avoided.

It therefore also requires no balance rocker and no connecting rod more, since the drive can attack directly on the support element. Furthermore, smaller guide means can also be installed, since a long guide path within the guide means for stabilizing the support element is not necessary.

Conveniently, a mold lift device for a mold support element and / or a punch lift device for a stamp support element is or are arranged on the machine frame as at least one lifting device.

It is advantageous if the first longitudinal guide element of the mold lifting device attached to the mold support element simultaneously forms the second longitudinal guide element of the stamp lifting device and / or the first longitudinal guide element of the stamp lifting device attached to the stamp support element simultaneously forms the second longitudinal guide element of the mold lifting device. The two different guides are thus nested in one another. This saves components, since no separate guide and no separate longitudinal guide element for the Stempelhubvorrichtung or for the Formhubvorrichtung must be provided.

Advantageously, two first longitudinal guide elements are fastened to the support element and / or two support element guide means are arranged. Consequently, the support element is thus guided with two longitudinal guide elements, which in turn are movably mounted on at least one frame guide means on the machine frame. This results in at least two guide points, which are not in a horizontal plane with the guide points of the support element guide means. This allows even better spatial stabilization of the support element in the guide.

Conveniently, the two first longitudinal guide elements and / or the two support element guide means are arranged diagonally opposite one another on the support element. This has the advantage that the support elements are also better stabilized spatially.

Furthermore, it may be advantageous if two frame guide means for a longitudinal guide element are arranged on the machine frame. Thus, the longitudinal guide element is guided at two spatially separated points in the frame. As a result, the longitudinal guide element can bend even less so that canting of the support element can be avoided even more reliably, which in turn has a positive effect on the wear of the guide element and the guide means.

It is advantageous if the at least one longitudinal guide element is designed as a shaft, rod, rail or groove in a carrier of the machine frame. Furthermore, it is advantageous if the at least one guide means has a recess, bushing, cage guide, jaw guide, spring or a rolling body for guiding the longitudinal guide element assigned to it.

Conveniently, at least one first longitudinal guide element is fixed by means of a releasable locking means to a support member and at least a second longitudinal guide element guided by means of a lockable guide means on the machine frame. Thus, the first longitudinal guide element can be made by loosening the locking means to a second longitudinal guide element and the second longitudinal guide element can be made by fixing the guide means to a first longitudinal guide element. Thus, the longitudinal guide elements of a support means can be exchanged for that of the other support means, for example, in case of wear. Furthermore, this also gives rise to the possibility of exchanging individual longitudinal guide elements, for example in the context of maintenance work, without the stone forming machine having to be disassembled into larger parts. As a detectable guide means may be provided, for example, a jaw guide.

Fig. 1

eine perspektivische Ansicht einer erfindungsgemäßen Steinformmaschine;

Fig. 2

einen Querschnitt durch die erfindungsgemäße Steinformmaschine mit angehobenem Stempeltragelement;

Fig. 3

die in Fig. 2 angedeutete Schnittdarstellung entlang der Linie A-B;

Fig. 4

den in Fig. 2 gezeigten Querschnitt der erfindungsgemäßen Steinformmaschine mit abgesenktem Stempeltragelement; und

Fig. 5

die in Fig. 4 angedeutete Schnittdarstellung entlang der Linie E-F.

The invention will be explained in more detail with reference to an embodiment shown in the drawing. In it show schematically:

Fig. 1

a perspective view of a block forming machine according to the invention;

Fig. 2

a cross section through the stone molding machine according to the invention with raised die support member;

Fig. 3

in the Fig. 2 indicated sectional view along the line AB;

Fig. 4

the in Fig. 2 shown cross-section of the inventive block molding machine with lowered stamp support member; and

Fig. 5

in the Fig. 4 indicated sectional view along the line EF.

In the Fig. 1 to 5 a stone forming machine 1 according to the invention is shown in several views and operating conditions. The block making machine 1 has a machine frame 2, 3 with a movable main frame 2 and a static frame 3. On the movable frame 2, a Formhubvorrichtung 4 and a Stempelhubvorrichtung 5 are arranged. With the Formhubvorrichtung 4 and the Stempelhubvorrichtung 5 are a mold support member 6 and a stamp support member 7 via linear guides movably mounted on the machine frame 2, 3. In the block forming machine according to the invention, waveguides are used for this, although other types of linear guides can also be used.

How to particular in Fig. 1 can recognize, the linear guide of the mold support member 6 comprises two first longitudinal guide elements 8a and two second longitudinal guide elements 9a, which are opposite to the machine frame 2, 3 diagonally. The same applies to the linear guide of the stamp support member 7, which also comprises two first longitudinal guide elements 8b and two second longitudinal guide elements 9b, wherein the first longitudinal guide elements 8b of the stamp support member 7 correspond to the second longitudinal guide elements 9a of the mold support member 6 and vice versa. For the sake of simplicity, the linear guide will now be explained in greater detail on the basis of only one respective first longitudinal guide element 8a, 8b and a second longitudinal guide element 9a, 9b.

As in the sectional views of Fig. 2 to 5 illustrated, the first longitudinal guide element 8a of the mold support member 6 is attached to this via a releasable locking means 16, for example via a lockable jaw guide. The mold support element 6 is guided via a support element guide means 14 on the second longitudinal guide element 9a of the mold support element 6, wherein the support element guide means 14 may be embodied, for example, as a lockable jaw guide or as a slide bearing.

The linear guide of the stamp support member 7 has a lockable guide means 17, on which the first longitudinal guide element 8b of the stamp support member 7 is attached. The releasable locking means 17 may be, for example, a lockable jaw guide. The guide of the stamp support member 7 on the second longitudinal guide element 9b of the stamp support member 7 via a support element guide means 15, which may for example also be designed as a lockable jaw guide or as a sliding bearing.

The first longitudinal guide element 8a, 8b and the second longitudinal guide element 9a, 9b of the mold support element 6 and of the stamp support element 7 are guided in two frame guide means 10, 11, 12, 13, respectively. This frame-guide means 10, 11, 12, 13 may for example be designed as a sliding bearing. The upper frame guide means 10, 11 are arranged on the movable frame 2, and the lower frame guide means 12, 13 are arranged on the static frame 3. Like from the Fig. 2 to 5 clearly visible, the frame guide means 10, 11, 12, 13 are always spaced from the support element guide means 14, 15 and the releasable locking means 16, 17.

Thus, not only substantially at a height arranged guide points for the guidance of the mold support member 6 and the Stempeltragelements 7, but vertically spaced guide points arise. This results in a spreading in the guide direction (here in the vertical direction) of the storage or guidance of the mold support member 6 and the stamp support member 7 by exploiting the height of the stone forming machine. 1

The mold lifting device 4 has two mold lifting cylinders 18 acting directly on the mold support element 6 for moving the mold support element 6. The mold lifting cylinders 18 are each arranged laterally on the movable frame 2 of the block forming machine 1 between a first longitudinal guide element 8a and a second longitudinal guide element 9a of the mold support element 6, as can be seen in particular Fig. 1 can recognize well.

In order to move the stamp-carrying element 7, the stamp-lifting device 5 has a stamp lifting cylinder 19 arranged centrally on the movable frame 2 of the block-making machine 1, the stamp-lifting cylinder 19 engaging directly on the stamp-carrying element 7. Since the movement of the stamp support member 7, the first longitudinal guide elements 8b are moved, are located below the static frame 3, two recesses 20, in which the first longitudinal guide elements 8b protrude with lowered stamp support member 7 (see Fig. 4 and 5 ). But it is also quite possible to choose the height of the static frame 3 so that the recesses 20 could be omitted.

The production of the moldings 21 with a block-forming machine 1 according to the invention and the corresponding movements of the mold-supporting element 6 or of the stamp-carrying element 7 will now be described by way of example.

First, the stone forming machine 1 is fed with a pad 22. The underlay pallet 22 comes to a halt centrally in the stone forming machine 1, usually on a vibrating table unit. Subsequently, an upwardly and downwardly open stone mold 23 is lowered onto the support pallet 22. For this purpose, the stone mold 23 is attached to the mold support element 6. By actuating the Formhubzylinder 18, the mold support member 6 is lowered. In this case, the first longitudinal guide elements 8a are moved, since they are attached via the releasable locking means 16 on the mold support member 6. The second longitudinal guide elements 9a do not move, wherein the mold support member 6 is guided to these by means of the guide means 14. Subsequently, concrete is filled via filling trucks in the mold nests of the stone mold 23. This condition with filled form nests of the stone form 23 is in the Fig. 2 and 3 shown.

After filling the stone mold 23, the stamp support member 7 is lowered, so that the stamp support member 7 attached to the punch 24 compact the concrete in the stone mold 23. In addition, a compaction of the concrete can alternatively also be achieved by vertical excitation via the vibrating table unit respectively. Since the first longitudinal guide elements 8b, which are simultaneously the second longitudinal guide elements 9a of the mold support element 6, are fastened to the stamp support element 7 via the releasable locking means 17, these are moved during a movement of the stamp support element 7 , Here, the second longitudinal guide elements 9b, which are also the first longitudinal guide elements 8a of the mold support member 6, not moved, since the stamp support member 7 is movably mounted on these via the guide means 15. When the stamp-carrying member 7 is completely lowered and the punches 24 compact the concrete in mold cavities of the brick mold 23, the lower ends of the first longitudinal guide members 8b of the stamp-carrying member 7 project into the recesses 20. This condition is in Fig. 4 and 5 shown.

Thereafter, first, the stamp support member 7 is raised again, wherein the first longitudinal guide elements 8b of the stamp support member 7 are moved again. Subsequently, the stone mold 23 is lifted from the support pallet 22 by lifting the mold support member 6 and the moldings 21 are removed from the mold. Here, the first longitudinal guide elements 8a of the mold support member 6 are also moved again. The pad 22 with the moldings 21 can then be removed from the stone forming machine 1 and fed to the subsequent processes.

reference numeral

1

Block making machine

2

movable main frame

3

static frame

4

Formhubvorrichtung

5

Stempelhubvorrichtung

6

Shape supporting element

7

Die supporting element

8a

first longitudinal guide element of the mold support element

8b

first longitudinal guide element of the stamp support member

9a

second longitudinal guide element of the mold support element

9b

second longitudinal guide element of the stamp support member

10

Upper frame guide

11

Upper frame guide

12

lower frame guide

13

lower frame guide

14

Supporting member guide means

15

Supporting member guide means

16

releasable locking means

17

releasable locking means

18

Formhubzylinder

19

Stempelhubzylinder

20

recess

21

moldings

22

underlay palette

23

stone shape

24

stamp

Claims (9)

1. A block moulding machine (1) with a machine frame (2, 3), on which at least one lifting device (4, 5) for a support element (6, 7) is arranged, wherein the support element (6, 7) is movably mounted on the machine frame (2, 3) by means of a linear guide, which includes at least one linear guide element (8a, 8b, 9a, 9b) and a guide means (10, 11, 12, 13, 14, 15) cooperating with it, characterised in that fastened to the support element (6, 7) there is a first longitudinal guide element (8a, 8b), which is movably mounted by means of at least one frame guide means (10, 11, 12, 13) arranged on the machine frame (2, 3), and arranged on the machine frame (2, 3) there is a second longitudinal guide element (9a, 9b), on which the support element (6, 7) is movably mounted by means of a support element guide means (14, 15) arranged on it.
2. A block moulding machine (1) as claimed in Claim 1, characterised in that a mould lifting device (4) for a mould support element (6) and/or a male mould member lifting device (5) for a male mould member support element (7) is/are arranged on the machine frame and constitute the at least one lifting device (4, 5).
3. A block moulding machine (1) as claimed in Claim 2, characterised in that the first longitudinal guide element (8a), fastened to the mould support element (6), of the mould lifting device (4) also constitutes the second longitudinal guide element (9b) of the male mould member lifting device (5) and/or the first longitudinal guide element (8b), fastened to the male mould member support element (7) of the male mould lifting device (5) also constitutes the second longitudinal guide element (9a) of the mould lifting device (4).
4. A block moulding machine (1) as claimed in Claim 2, characterised in that two first longitudinal guide elements (8a, 8b) are fastened to the support element (6, 7) and/or two support element guide means (14, 15) are arranged on the support element (6, 7).
5. A block moulding machine (1) as claimed in one of the preceding claims, characterised in that the two first longitudinal guide elements (8a, 8b) and/or the two support element guide means (14, 15) are arranged diagonally opposed on the support element (6, 7).
6. A block moulding machine (1) as claimed in one of the preceding claims, characterised in that two frame guide means (10, 11, 12, 13) for a longitudinal guide element (8a, 8b, 9a, 9b) are arranged on the machine frame (2, 3).
7. A block moulding machine (1) as claimed in one of the preceding claims, characterised in that at least one longitudinal guide element (8a, 8b, 9a, 9b) is constructed in the form of a shaft, rod, rail or groove in a beam of the machine frame (2, 3).
8. A block moulding machine (1) as claimed in one of the preceding claims, characterised in that at least one guide means (10, 11, 12, 13, 14, 15) includes a recess, sleeve, cage guide, jaw guide, tongue or a roller body for guiding the longitudinal guide element (8a, 8b, 9a, 9b) associated with it.
9. A block moulding machine (1) as claimed in one of the preceding claims, characterised in that at least one first longitudinal guide element (8a, 8b) is fastened to a support element (6, 7) by means of a releasable fixing means (16, 17) and at least one second longitudinal guide element (9a, 9b) is guided on the machine frame (2, 3) by means of a fixable guide means (14, 15) in order to be able to make the first longitudinal guide element (8a, 8b) into a second longitudinal guide element (9a, 9b) by releasing the fixing means (16, 17) and the second longitudinal guide element (9a, 9b) into a first longitudinal guide element (8a, 8b) by fixing the guide means (14, 15).

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