EP0718094B1 - Plunger guiding in waste compactor - Google Patents

Abstract

The press, for the compression of waste and rubbish, has sliding blocks (6) at the rear and sidewalls (SW) of the press shaft (S) as guides for the ram. Roller bodies (7) are at the inner sides (8a, 9a) of the front doors (8, 9) at the leading press section, at the press (P) and filling (E) zones. Pref. the sliding blocks (6) have a Teflon (RTM) coating over at least part of their sliding surfaces.

Description

The invention relates to the arrangement of the guide elements the ram of waste presses to Packaging of foils, cardboard boxes and. Ä. used up Packaging material, especially on presses standing type, d. H. with vertical press ram and guiding or supporting the same on the Walls of the press shaft in the four corner areas of the shaft cross section.

Such guides are generally known, see e.g. DE-A-4 230 775, however together suffers from the disadvantage that occasionally inevitable extreme tipping forces, resulting out of uneven or different Manhole filling with materials of different hardness, can only be insufficiently compensated and therefore the ram with its press plate, especially on the transverse ones Columns or grooves of the divided, with doors provided, front wall teases, hooks or even canted, causing damage to the press or whose drive elements can lead. It can also the door locking elements on the front wall or the doors themselves can be damaged, in particular in so-called multi-chamber presses.

The object of the present invention is therefore to eliminate these disadvantages and a new arrangement to create leadership elements in such a way that even with extreme tipping loads the ram is still sufficiently well managed and therefore on no parts of the divided front wall of the press shaft of the ram can hook or tilt more

According to the invention, this object is achieved by a ram guide for waste presses according to the generic term of Protection claim 1 by the in the characterizing part this claim listed features.

The subclaims disclose advantageous developments and embodiments of the invention.

The invention is characterized primarily by combinatorial interaction of sliding and rolling elements as guide elements of the press ram in one Garbage press of standing type, with a heavily interrupted one Front wall, off.

Due to this new construction, the cost-saving is the main thing Use of coarser manufacturing tolerances possible while reducing interference and Defects; any canting forces are absorbed and kept away from the drive piston bearings.

In a special embodiment of this new Guide arrangement is also provided that each of the four corner pieces with respect to each facing Wall of the press shaft has two guide bodies and also the mutual distances between the guide bodies are equal to each other and the latter in the working direction either offset from each other or in same levels.

The system of the present invention is broadest schematically shown in drawings and is based on this is explained in more detail below.

Fig. 1

den Schachtteil einer Abfallpresse stehender Bauart in Seitenansicht im Längsschnitt,

Fig. 2

eine Draufsicht zu Fig. 1 jedoch um 90° gedreht und

Fig. 3

in gegenüber Fig. 1 und 2 vergrößertem Maßstab eine Variante zu Fig. 1 als Teildarstellung des Bereichs "F".

Show it:

Fig. 1

the shaft part of a waste press standing design in side view in longitudinal section,

Fig. 2

a plan view of FIG. 1, however, rotated by 90 ° and

Fig. 3

on a larger scale than in FIGS. 1 and 2, a variant of FIG. 1 as a partial representation of the area "F".

The partially shown schematically in Figs. 1 and 2 Waste press 1 has in its basic structure a vertically acting drive 2 for the plunger plate 3, which is reinforced by a rigid subframe 4 from which is in the four corner areas Brackets 5 for attaching the tappet guide elements 6 and 7 extend upwards.

This is essential for solving the task at the beginning New is with such a press design now in that on the back wall "R" and the side walls "SW" of the press shaft "S" adjacent guide elements as sliding blocks 6 and in the front area of the press on the inside 8a and 9a of the front doors 8 and 9 of the press and feed chute area "P and E" are designed as roller bodies 7 are. These roles now run over without disruption the transverse joints "F" past the inside of the door 8a and 9a.

With regard to the design of the sliding blocks, it can also be of advantage if this is at least in one area their sliding surface are made of plastic or are coated accordingly; it is also conceivable that the plastic is reinforced with fiber materials and / or the sliding surface is coated with Teflon.

Finally, the illustration in Fig. 3 still shows the variant that both roller body 7 and sliding pieces 6 can be provided as guide elements on the inner sides 8a, 9a of the front door 8, 9, the roller bodies 7 seen with their in the pressing direction "P ₁ " Brackets 7a are in front of the sliding blocks 6, which are also rounded at edges 6a. When the plunger 3, 4, 5 runs into the door area of the feed chute "E" and press chute "P", the rollers 7 initially perform a tappet centering, particularly in the area of the transverse joints "F" there, while the one compared to the rollers 7 is slightly Dimension "x" slightly protruding sliding blocks 6 absorb the actual force.

This common arrangement of rollers 7 and sliding blocks 6, 6a is particularly so-called multi-chamber presses of advantage, in which the traversable across several chambers Press car due to mechanical tolerances and Wear is not always exactly in position to the respective one Bale chamber can be brought.

Reference number index

1

Waste press

2nd

Ram drive rod

3rd

Ram plate

4th

Subframe

5

console

6

Sliding block

6a

Rounding off

7

Reel body

7a

Roll holder

8th

Front door (filling area E)

8a

inside

9

Front door (press area P)

9a

inside

E

Filling area

F

Transverse joint

P

Press area

P ₁

Pressing direction

RW

Back wall

S

Press shaft

SW

Side wall

x

Got over

Claims (6)

1. Guide device for the ram of waste material presses (1) principally of upright mode of construction, i.e. with vertically acting ram drive, consisting of an auxiliary frame, which is resistant to bending and is associated with the ram plate (3), and brackets, which are mounted thereon and directed vertically upwards, in the corner regions for the fastening of the upper as well as lower guide elements, characterised in that the guide elements bearing against the rear wall (R) and the side walls (SW) of the press shaft (S) are constructed as slide blocks (6) and those disposed in the press front region at the inner sides (8a and 9a) of the front doors (8 and 9) of press shaft region and charging shaft region (P and E) are constructed as roller bodies (7).
2. Guide device according to claim 1, characterised in that slide blocks (6) are associated with the roller bodies (7) running at the front door inner sides (8a and 9a).
3. Guide device according to claims 1 and 2, characterised in that the slide blocks (6) are arranged behind the roller bodies (7) as seen in press direction (P₁) and are offset by their effective surface relative to the roller bodies towards the door inner sides (8a and 9a) by a small dimension (x).
4. Guide device according to claims 1 to 3, characterised in that the roller bodies (7) and slide blocks (6) lie on the same effective line as seen in press direction (P₁).
5. Guide device according to claims 1 to 4, characterised in that the slide blocks (6) consist of synthetic material, or are appropriately coated, at least in a part region of their slide surface.
6. Guide device according to claim 5, characterised in that the synthetic material is reinforced by fibre materials and/or the slide surface is coated with 'Teflon'.

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