EP1171283B1 - Baling press comprising a tiltable compacting container, and method for operating the same - Google Patents

Description

The invention relates to a baler with a tiltable press box, at a vertically guided ram is arranged above the press box and in which the press box in the forward tilted position the released filling opening can be filled.

From DE-OS 26 25 371 is already a device for compacting waste with a movable in a vertical guide ram, a tube (press box) arranged below, over which a sack-like container is slipped from below, the bottom of which is supported on a base plate during compaction is known, and with a device for emptying the compressed tube contents from the tube into the container, the tube together with the base plate being pivotable forwardly into an inclined position that enables filling. For swiveling, an axis is arranged on the filling side, below the base plate and a handle is also provided on the upper edge of the tube. In order to bring the pipe forward into the filling position, the operator must pull the pipe forward according to the hand truck principle and with considerable effort in the initial phase of the swiveling. Only in a late swing phase do the lever laws of physics take effect and swinging out becomes easier.
The total tilting of the tube forward is prevented by the rear, upper edge of the tube striking the press punch guide of the device.
For a fluid workflow when compacting the waste, it is also disadvantageous that the operator first has to swivel the pipe forward and only then can material be filled up. Another disadvantage of the device is that, to empty the pressed material, the tube must be pulled upwards via an additional guide unit so that its pressed content can be emptied into the flexible container that was pulled over the tube before the start of pressing, which pressed material is loosened again and the volume increases.

Furthermore, a device - press - for compacting household waste is known from US Pat. No. 3,946,661. This press has a press housing with an opening in the front, in which a tiltable unit - a container - is arranged, which contains a press box, which can be positioned below a vertically guided press ram. The actual press box is an insert which is placed on a bottom of the container, in alignment under a cylindrical stamp guide provided in the upper region of the container, which has an opening at the top and bottom, the upper opening being at the same time the filling opening for inserting the waste material , The cylindrical punch guide is also the waste chamber in which the waste is collected in preparation for pressing.
Said container, on which the insert (press box) is placed, is pivotally mounted on the housing by means of hinges, the axes of which are aligned and horizontally aligned. In this device, therefore, it is not the press box that can be tilted about a horizontal axis, but the additional receiving unit.
Compared to the press according to DE-OS 26 25 371, the center of gravity of the horizontal swivel axis has been shifted in this press, but its swivel axis is such that the entire unit in question, also here, only by manual actuation on the handle of the container to the front is tiltable.
This device also has the disadvantages mentioned above, and the increased manufacturing outlay is a further disadvantage.

Presses with press rooms that can be filled from above are also known a press box with square or rectangular Have floor space and on which after the press is finished Bale at least two side walls of the press box outwards be pivoted away to the bale from the baling room remove.

The object of the invention is therefore to provide a baler tiltable and fillable from above, in the tilted position To create press box with which an operator is physically less is loaded, which allows a more fluid workflow and with can be produced with little technical and economic effort.

The task is solved by a baling press with a tilting press box the features of claim 1, which are dependent Claims 2 to 5 disclose further developments or advantageous constructive-technical embodiments of the invention and Claim 6 new procedures in the operation of such Balers.

What is essential in the newly designed baler with a tiltable press box is that an axis is provided on the press frame, which is preferably portal-shaped, around which the press box can be tilted, and bearings are provided on or preferably below the bottom of the press box and essentially encompass the axis are arranged in such a way that the longitudinal axis of the axis, as seen from an end wall of the press box, lies in a frontal plane which is preferably behind the center of gravity of the press box.
This aforementioned arrangement is specially selected so that the press box is almost in equilibrium in the vertical position, but is slightly overweight in the pivoting / tilting direction, in this case forward.
The press box is locked by a locking unit in the vertical position required for pressing, so that the press box (press chamber) and a preferably electro-hydraulically operated, vertically movable press ram of the baler are aligned with each other for a press cycle.
In terms of the method, it is also provided in a new way that when the press ram is returned to its upper position, the locking unit is actuated in such a way that the press box automatically tilts forward into the filling position.
In a further embodiment, the locking unit can also be operated by hand.

In a technical extension, a spring unit is also provided on the back of the press frame, which is in operative connection with the press box in such a way that when the press box is unlocked it receives an additional start thrust for tipping and that when the press box is pivoted into the vertical position, this spring unit is also preferred acts as a damping element.
Further advantages and technical refinements of the new baler consist in the use of at least one pulse valve for the preferably used electro-hydraulic drive of the press ram, in particular for the changeover from the press stroke to the lifting (retracting) of the press ram in its starting position.

In the front wall and in the rear wall, to each other corresponding slits allow the strapping of a pressed one Bale with tape or wire with the press box still closed. The press plate of the stamp is also known in this way designed that the strapping even when sitting on the bale Press plate is feasible.

Figur 1 :

eine neue Ballenpresse mit kippbarem Presskasten in Frontalansicht;

Figur 1b :

eine Seitenansicht von Figur 1a, mit angedeuteter abgekippter Position des Presskastens;

Figur 2 :

eine zu Fig. 1 modifizierte Ballenpresse mit weiteren Details in Seitenansicht;

Figur 3a : - Fig.3c

jeweils Details von Fig. 2; Pressstempel und -kasten in verschiedenen Arbeitspositionen eines Presszyklus.

The invention is explained in more detail below with reference to exemplary embodiments shown schematically in the drawings. Show:

Figure 1:

a new baler with tiltable press box in front view;

Figure 1b:

a side view of Figure 1a, with indicated tilted position of the press box;

Figure 2:

a modified to Figure 1 baler with further details in side view;

Figure 3a: - Fig.3c

details of Fig. 2; Press stamp and box in different working positions of a press cycle.

The new baler 1 is shown in front view in FIG. The baler 1 consists of a press frame 2 which has two lateral, facing portal columns 4, a bridge 3 arranged horizontally between the latter 4 in the head region thereof, a cross member 9 in the foot region and a horizontally arranged axis 10 above the latter 9.
On, in and above the bridge 3 there is a drive 47, an electro-hydraulically operated lifting cylinder 48 as well as control and signaling devices not shown here. A start switch 52 and a stop switch (emergency stop) 53 are preferably arranged on a front plate 5.
In the foot area of the portal columns 4, a foot part 6 is provided, which has a wheel 7 at one end and an adjusting element 8 at the other end, as shown in FIG. 1b.
A press box 11 is arranged between the portal columns 4 and above the horizontal axis 10 and is tiltably supported here via two webs 23 arranged below the press box 11, each of which has a bearing 24, the bearings 24 encompassing the axis 10.
It can also be seen from FIGS. 1a and 1b that the press box 11 consists of a base 12, a rear wall 13, two side walls 14 and 15 and an end wall 16, which together form an upwardly open pressing chamber. A door 18 is provided in the end wall 16, which can be closed by means of a door lock 19 and can be pivoted about hinges 20, so that the baling chamber can be opened to remove the bale that has been pressed, preferably tied, after unlocking the door lock 19. A handle 17 is arranged above the door 18 on the end wall 16 for handling the press box 11. The upper edges of the press box parts 13, 14, 15 and 16 form the filling opening 22 which is open at the top.

In terms of procedure, it is now provided in a new way that for Release of the filler opening of the tiltable press box 11 which is vertical guided press stamp 30 of the baler 1 on the Press movement following backward stroke "R" one to the press box attacking locking unit actuated so that the unlocked Press box automatically tilts so far that the Filling opening 22 for filling the press chamber of the press box in Is essentially freely accessible.

At the back of the press frame 2 is at least one Supply roll 51 held for strapping 50; the strapping 50 can be provided in the rear wall 13 and in the end wall 16 Slots 18 'are handled before or after the pressing process.

On the left edge of the door 18 and on a corresponding one The left portal column 4 is part of a signal unit 28 arranged. When tipping the press box 11 forward to Filling or when opening the door 18 to remove the bale this signal unit 28 gives a signal for drive control, which causes the drive for the punch 30 to switch off or is stopped immediately when movement is completed.

FIG. 2 shows a side view of a modified embodiment of the new baler 1 shown in FIGS. 1a and 1b and further components and assemblies in detail.
The press box is in the "fill" working position, the press die 30 is in its uppermost position, in the rest position.
The press die 30 is connected to the lifting cylinder 48 of the drive 47 with its auxiliary frame 31, which preferably consists of U-shaped profiles, and holds profile rails 33 on its underside, parallel to the side walls 14 and 15 of the press box 11. The profile rails 33 have a trough-shaped shape Cross-section,
whereby the open side is directed downwards and a plurality of profiled rails 33 are arranged next to one another at a distance, so that their obliquely extending legs form a V-shaped gap for guiding the strapping tape, but are so close to one another that the pressing plate 32 together is formed.

At the back of the baler 1 is one of several elements existing locking unit 40 arranged, one in one Flange 26 mounted bolt 27 and a sink lock 25 on the Rear wall 13 of the press box 11 are arranged and a special designed latch 41 on the back of the bridge 3 of the press frame 2 is provided.

Furthermore, a vertical central axis 29 is shown in FIG. 2, which is a common axis for the press die 30 and the press box 11, which is positioned vertically for the pressing process.
The press die 30 and the press box 11 are arranged centrally symmetrically with respect to this central axis 29, in such a way that the frontal plane running through the center of gravity of the press box 11 lies in this central axis 29.
In addition to the new and specially designed locking unit 40, it is also essential for the invention that the longitudinal axis 10a of the horizontal axis 10, about which the press box 11 can be tilted, lies behind the central axis 29, i.e. behind the frontal plane of the press box 11 which runs through the center of gravity of the body.

The details of the locking unit 40 as well as various Working positions of the stamp 30 in connection with the Locking unit 40 are shown in FIGS. 3a to 3c.

In FIG. 3a, the stamp 30 moves after the partial cycle Press again in the direction of "R". In the side view of Baler 1 partially shown on the left, along the break lines "B1" and "B2" cut open are details of the locking unit 40 shown.

A bolt 41 is pivotally mounted with a bearing pin 45 on a support 46 which is fastened to the rear of the bridge 3. The bolt 41 also has two legs arranged almost at right angles, one leg having a nose 42 in its end region, which protrudes through the rear wall 13 into the pressing space to such an extent that it moves into the effective range of a pivotable pawl arranged on the auxiliary frame 31 34 reaches into it.
In the horizontally lying lower side of said leg there is a locking groove 44 located behind the rear wall 13 which, in this working position, engages over the bolt 27 arranged on the rear wall 13 of the pressing box 11 and thus holds the pressing box 11 in the “pressing” working position.
The upward, narrower leg of the bolt 41 compared to the first described leg is designed as a handle 43. By means of a tension spring 49 acting on this handle 43 and on the carrier 46, the other, essentially horizontal leg of the bolt 41 with the latching groove 44 is always pressed into the "hold" position.
In the illustration according to FIG. 3b, the ram 30 has already moved upward, the pawl 34 engages the nose 42 of the bolt 41 and swivels it overcoming the spring force about the bearing pin 45 so that the latching groove 44 is also raised is and thus releases the bolt 27.

After release of the bolt 27, see FIG. 3c, the press box 11 tilts forward into the filling position due to the special position of the horizontal axis 10 already described.
The forward tilting movement is limited by locking elements, preferably provided with damping elements, preferably arranged on the portal columns 4, which engage the press box 11; a graphic representation of the latter has been omitted here.
The rib lock 25 arranged on the rear wall 13 travels forward between two profile rails 33 during the tilting movement of the press box 11 and lies under a transverse part of the subframe 31 when the press box 11 is fully tilted before.
The lowering lock 25 prevents the press ram 30 from falling below a predetermined position and thus ensures that the press box 11 can be pushed back into the "pressing" position, ie into a vertical position, at any time by manual actuation. It can also be seen here that after passing the pawl 34, the bolt 41 falls back into its starting position. When the press plate 32 begins the press stroke and moves downward, the slope 36 of the pawl 34 runs onto the slope of the nose 42, swivels upwards as it passes around the pivot axis 35 and falls back into the starting position after passing the nose 42 , her lower surface 38 is preferably supported on a profile rail 33.

The invention is not restricted to the exemplary embodiment, like in the following claims described.

References directory:

1

Baler (with tilting press box)

2

press frame

3

bridge

4

portal pillars

5

front panel

6

footboards

7

wheel

8th

adjusting

9

traverse

10

horizontal axis

10 a

longitudinal axis

11

Press box

12

ground

13

rear wall

14

Sidewall, left

15

Sidewall right

16

bulkhead

17

Handle

18

door

18 '

slots

19

door lock

20

hinges

21

top edge

22

fill opening

23

Stege

24

camp

25

Sink barrier (rib)

26

flange

27

bolt

28

signal unit

29

central axis

30

press die

31

Subframe (U-profile)

32

press plate

33

Profile rails (trough-shaped cross section)

34

pawl

35

swivel axis

36

slope

37

Upper surface

38

Lower surface

39

spring unit

40

locking unit

41

bars

42

nose

43

handle

44

locking groove

45

bearing bolt

46

carrier

47

drive

48

Lifting column (hydraulically movable)

49

mainspring

50

strapping

51

supply roll

52

start button

53

Stop button (emergency stop)

B1, B2

fault lines

R

Direction, movement of the stamp

Claims (6)

1. Bale press with tippable press box, which is arranged below a press ram (30), which in the use state is vertically guided, within a press frame (2) and is tippable forwardly about an axis (10), which is horizontal in the use state, characterised in that the geometric longitudinal axis (10a) of the horizontal axle (10) lies behind a frontal plane, which extends through the body centre of gravity of the press box (11), as seen from an end wall (16) at the front side of the press box (11) and a locking unit (40) engaging at the press box (11) is provided at the rear side of the bale press.
2. Bale press according to claim 1, characterised in that a catch (34), which actuates the locking unit (40) is arranged at the press ram (30).
3. Bale press according to claim 1 or 2, characterised in that a descent lock (25), which is constructed to be rib-shaped, is arranged at the rear wall (13) of the press box (11).
4. Bale press according to one of claims 1, 2 and 3, characterised in that a spring unit (39) acting on the press box (11) is arranged at the rear side of the press frame (2).
5. Bale press according to one of claims 1 to 4, characterised in that damping elements, which engage at part regions of the press box (11), for limitation of the tipping movement of the press box (11) are provided at the press frame (2).
6. Method of freeing the opening of a filling shaft of a tippable press box for a bale press with a press ram (30) vertically guided in the use state, characterised in that the press ram (30) of the bale press actuates a locking unit, which engages at the press box (11), during the rearward stroke following, in vertically upward direction, the press movement so that the unlocked press box automatically tips about a longitudinal axis (10a) into an inclined position, wherein the longitudinal axis (10a) lies behind a frontal front, which extends through the body centre of gravity of the press box (11), as seen from an end wall (16) at the front side of the press box (11) and the opening of the filling shaft is substantially freely accessible in the inclined position.

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