DE3050213A1 - Baling press for scrap material - has arrowhead blades mounted on piston cooperating with sawtooth blades fixed to housing - Google Patents

Abstract

The scrap baling press has a hopper (27) from which the material falls into a horizontal channel (1). A hydraulically actuated piston (2) compresses the material and forces it out through the end opening (3b) which can be adjusted for size. The piston has a row of four blades (8a,8b) with gaps (9) between adjacent blades. The two central blades (8b) have cutting edges inclined to each other so that the pair form an arrowhead. A fixed counter blade (4) with a sawtooth edge is mounted on a holder (4') at the lower edge of the hopper (27). These shapes of blades reduce the force required to cut the material before compressing it into bales. The piston is guided by a cover plate (20) which runs in guides formed by plastics mouldings (21).

Description

Bale binding device on presses for

Packaging Waste Materials The invention relates to a Prenballenbinding device for presses according to the preamble of the main claim.

Such presses are already known, for example, from DE-OS 22 08 682, but the construction shown there has a number of structural features and functional disadvantages.

The object of the present invention is. it therefore, a press of the to be trained at the outset such that viewed overall, a continuous working unit for the production of tied bales is created, which at structurally relatively small dimensions, large waste quantities in simple and reliable Art can handle, inexpensive to buy and therefore ideal for a Recycling is suitable.

This problem is solved in a convincing way by the Patent claims specified structural and functional features, with respect to the storage or guidance of the press ram from the features of DE-EM 78 10 509 is assumed.

In the drawings, an embodiment of the invention is schematically shown and explained in more detail below.

1 shows the side view of a press according to the invention, Fig. 2 is a plan view of Fig. 1, on a slightly enlarged scale; Fig. 3 as a detail in side view of the lower belt leadthroughs of the press shaft again on a larger scale and FIG. 4 shows the tape guide rollers as a detail in Front view.

The press shown in Figs. 1 and 2 for packaging waste materials is suitable for single stroke press gears or automatic continuous operation, as well as equipped with a plunger 2, 2a movable in the horizontal direction, onto the upper side of the press shaft 1 attached funnel 27 and two shear blades assigned to the end face 4, 8a, 8b and furthermore provided with a press shaft 1 in the foremost Position of the plunger 2, 2a relative to the hopper 27 closing Cover plate 20.

Between the filling space a of the press shaft 1 and the actual one Pressing channel 3 is located in a known manner, a buffer zone b and the housing-side Shear blades 4 are seen in the pressing direction before or at the beginning of this buffer zone b. The actual baling channel 3 is via corresponding adjusting spindles 6 or the like.

its cross-section can be changed towards the open bale ejection end 3b, the length ratio of filling space a to buffer zone b is about 2/3 to 1/3.

Furthermore, it is also provided in a known manner that the usual retaining claws on the inside of buffer zone b and press channel 3 7 are placed and the latter extends at least over a portion c of the length of the compression channel 3 extend.

In addition, those lying on the end face of the plunger 2 have Shear blades 8a, 8b have an arrow-shaped course of their cutting edges in the working direction 8 ', with these shear blades consisting of several longitudinally divided individual sections 8a and 8b, these sections are individually interchangeable with a knife holder 8 'are screwed, the gaps 9 between the knife sections 8a and 8b of the cutting edges 8 'extend conically to the rear and in with the front-side disruptive grooves 10 corresponding, recesses 9 'open. Completed the press shown is still through the drive elements 29, which are on the piston rod 28 work.

As can also be seen in FIGS. 3 and 4, in one such waste press according to the invention now provided that the supply of Straps 11 and 12 for the binding of the finished pressed bale from an upper and a lower tape supply station 13 or

14 takes place simultaneously along the upper and lower side of the press shaft, whereby the free ends of both bands 11 and 12 are always fixed by means of a knot 15 are connected to each other.

According to the invention, the lower tape supply station 14 is located on the drive side 1a of the press, the belts 11 through channels 16 to the bottom of the manhole inserted along and over centering rollers 17, 18 into the bottom of the press shaft 3 are, while the upper tape supply station 13 is arranged on the press shaft 3. It is also provided that the inlet openings 19 for the lower belts 12 of the press shaft front side 3a from as far moved in the direction of the shaft end 3b are that these bands 12 only run in the already compacted bale zones c.

As FIGS. 3 and 4 also show, the lower tape guides exist each from a centering roller 17 and one cooperating with or in this engaging pressure roller 18. The advantages according to the invention are now: a. The feeding of the belts 11, 12 from below and above into the press chamber saves expensive work Band brakes at the respective stations 13 and 14.

b. The belt 12 entering at the bottom is also in each case through the pair of guide rollers 17, 18 laterally centered so that it goes with the known hook through the ram grooves 10 ,, the knife recesses 9 'and the openings 19 through from below for binding the finished bale can be pulled up and at the same time remains centered, ready for a new knot 15.

c. In addition, the tab-like notches 19a of the press shaft bottom 3 that the incoming tapes can move downwards and thus during the press stroke not pushed together like an accordion.

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Claims (2)

Claims baler binding device on presses for packaging of waste materials, suitable for single stroke pressing or automatic continuous operation, equipped with a plunger that can be moved in the horizontal direction, on the upper side of the press shaft attached filling funnel and two shear blades assigned to the face, furthermore provided with a press shaft in the foremost position of the press piston cover plate which closes off with respect to the filling funnel, characterized in that that the pulling of the belts (11 or 12) for the binding of the finished pressed bale from an upper and a lower tape supply station (13 and 14, respectively) along the The upper and lower side of the press shaft takes place simultaneously, with the free ends of both Straps (11 or 12) are connected to one another via a knot t 15). 2. Press according to claim 1, characterized in that that the lower strip supply station (14) is located on the drive side (1a) of the press, wherein the straps (11) by anal (16) along the underside of the manhole and are introduced into the bottom of the press shaft (3) via centering rollers (17, 18), while the upper tape supply station (13) is arranged on the press shaft (3) is. 3. Press according to claims 1 and 2, d a d u r c h g e k e n n z e i c h n e t that the inlet openings (19) for the lower belts (12) of the press shaft end face (3a) as far in the direction of the shaft end (3b ) are to be laid so that these belts (12) only in the already compacted bale zones run up. 6. Press according to claims 1 to 3, characterized in that the lower tape guides each consist of a centering roller (17) and one with this cooperating or engaging in this pressure roller (18) exist.