EP1259326B1 - Top for a paper shredder, for receiving and feeding in paper - Google Patents

Abstract

The shredder top has an integrated closing unit comprising movable parts. these parts can be moved to different locations, so that the filling aperture (17) in the top and the intermediate area between the receiving compartment and the feed shaft (10) for the crumpled paper can be alternately opened and closed.

Description

The invention relates to an essay for shredders for Recording and feeding of documents, in particular crumpled paper, such as it is obtained in wastebaskets and the like collection containers.

In practice, document shredders are known, which are a cabinet-like or cabinet-like substructure, in which above a Collecting a cutting unit for shredding the supplied Material is arranged. The feed takes place from the upper area from, wherein in the so-called upper part of the housing a substantially horizontally lying or downwardly inclined gap for the supply of smooth, sheet-like material and one optional on the top attachable or fixed receptacle - hopper - for so-called crumpled paper, for example, the contents of a Paper basket, are provided.

These receptacles are usually front side, so facing the operator, equipped with a transparent front panel and have in its surface a filling opening, which occupies almost the entire area in the rule. The lower surface of these essays is designed in their structural design based on the upper surface of the upper part of the shredder housing so that poured material - for example, crumpled paper - can fall directly into the space upstream of the cutting rollers. Depending on the make it is also provided that the cutting unit is constantly running after pressing a start button or during the pouring of the crumpled material by pressing a switching element - such as a light barrier - starts the cutting unit.
Such a document shredder is, for example, the "HSM P 450 CC" of the company. HSM presses GmbH & Co. KG, Salem, Germany.
To avoid danger spots on these devices, a safety guideline / standard, the EN 294 from 1992 (European standard), prescribes that, depending on the location of the danger zone, ie on such devices, the position of the shredder cutting unit, the upper edge of the shredder Receptacle, measured from the footprint of the document shredder, must have a certain minimum height in the vertical.
This has the consequence that, for example, when the cutting unit at a height of 1000 mm and at a distance of the feed edge of the material to be destroyed of 300 mm, usually seen from the front of the shredder, the upper edge of the receptacle at least at a height of 1600 mm.
Such a document shredder is disclosed for example in DE 31 12 835 C2. In this shredder a feeder is placed on the shredder. The charging device comprises a patch on the top of the device housing shredder, which is on the leading to the cutting guide plates, which are provided in the housing above the comminution, on one side of the housing and pivotally mounted on the housing and together with the baffles, the comminuting organs immediately upstream, feed chute forms. The pivot axis is coupled with a safety switch. When the filling shaft is swiveled backwards - for example, to remove material that can not be cut in front of the cutting unit - the drive of the cutting unit is switched off.

As a result, these devices build very high, so there is a high cost of materials in the production of such document shredders or shredders that are built below the specified by the standard height limits must have additional safety devices at the filling opening of said receptacle. Thus, for example, in the shredder "IDEAL 4605" (IDEAL Krug & Priest GmbH & Co. KG, Balingen, Germany) at the top of the receptacle sidewards and behind a railing provided; the foldable material feed table for the sheet material secures the safety distance from the filling side with this device. In another known solution, the document shredder "TAROS 50.66" (Schleicher & Co. International AG, Markdorf, Germany), the filling opening of the receptacle is secured by an overhead lid, which operates a safety switch when opening. This solution requires a further material and circuit complexity and additional Arbeitsverrichtungen for the operator during filling of said crumpled material.
In another shredder, the "5540 C" (EBA, Balingen, Germany), the shredder's housing compared to the aforementioned shredders is kept relatively low, but this shredder builds on the side very far. This shredder has sideways feed inlets, an insertion slot for sheet material and a still further away from this side receiving box in which the so-called crumpled paper can be emptied, which is then fed via a covered conveyor belt to the cutting unit. The distance of this task location to the cutting unit depends on the height of the passage gap for the crumpled paper, ie the distance from the conveyor belt vertically up to the cover. Also in this solution, a lot of material is needed for the production of shredders, also the required footprint is compared to the building up in height shredders much larger.

Furthermore, from DE-A 1 240 721 a pivotable about an axis Feed device for regrind - preferably plastic - known essentially above one to a rotor cutter hinführenden funnel is arranged. This task device prevents - in the normal application - that an operator said Cutting mill from the material insertion opening of the filling shaft can not reach into the cutting rotor. It is according to this this device provided that the cutting mill for the Crushing of plastic is used to produce granules; In addition, a possible use of this task is on Called hammer mills or calenders. Furthermore, a subsection of the Soil of trained as a dump body task device as formed further pivoting flap. After swiveling in Tipping trough into the filling shaft, this will be more Swing flap actuated and pushed inwards, so the regrind after down into the grinding chamber and pressed against the cutting rotor. A combination of this feeding device with the filling shaft of the Feeder of a shredder after the DE 31 12 835 C2 is completely impractical, since despite reducing the total height of the shredder by coupling said Feeder on the hopper increases the height again is and the dump body in the filling state forward of the hopper protrudes.

Therefore, the object of the invention is an attachment for Shredder, which fixed or optionally on a shredder can be arranged to create, with a shredder together with an attached attachment, in compliance with the norm prescribed safety regulations, despite a low Footprint over the known devices in its entirety Height can be kept relatively low.

This task triggers an essay for shredders to record and Feeding of documents, in particular of so-called crumpled material, with the features of claim 1; the claims 2 to 4 disclose developments and advantageous Embodiment variants of the subject invention; the Claims 5 to 10 advantageous processes of filling the shredder.

The advantages of the invention are, above all, that with a small footprint of the shredder selbiger, compared to the aforementioned known shredders, has a lower height, with this height must depend essentially only on the designed volume of the collection chamber for the shredded material.
This new essay, the said so-called crumpled paper absorbs and feeds the cutting unit, is in particular designed such that an accidental intervention with the hand through the receiving space of the essay into the cutting mechanism can not be done, but also in befindlichem cutting unit In the receiving space of the essay into or waste material can be refilled.
In addition, the new essay has the advantage that a metered supply of the filled for crushing waste material, eg. B. crumpled paper and the like material from an office paper basket, can be done towards the cutting unit.
The new article is distinguished in particular by the fact that a closure unit is integrated in the same, which itself or by the individual components or groups are movable, in particular rotatable, or can be moved. The fundamentally new features of the closure unit will be mentioned later in detail. With this closure unit, a filling opening of the attachment and a transition region (opening) between the material receiving space and the feed chute to the cutting unit, in particular at the same time, mutually opened and closed; in such a way that inadvertent intervention by hand through the receiving space of the essay through into the cutting mechanism can not be done.

The shredder on which the attachment for receiving and feeding documents is primarily placed, preferably has a housing, the lower portion of a cabinet-like base and its upper portion is preferably optionally removable upper housing part, together with arranged in the upper part of the housing cutting unit, with Cutting rollers and scrapers, and an associated drive unit, wherein above the cutting mechanism, a feed chute for the so-called crumpled paper is provided.
The attachment is fixedly or alternatively detachably arranged on the housing above this feed chute, wherein the attachment essentially forms a receiving space for the so-called crumpled paper together with a covered, openwork upper area of the housing upper part and wherein this receiving space is in connection with the feed chute. The spatially variable or movable closure unit or components thereof are associated with means for their actuation and control.
In particular, it is provided that the closure unit has a movable closing element, wherein the same is preferably arranged rotatably about a horizontal axis. In a special embodiment, this movable closing element is a base body, in which a receiving trough is formed under the recess of half the lateral surface, which is arranged with its body longitudinal axis rotatable about the horizontal. The main body is preferably cylindrical.

The hollow body may also have a different shape from a cylinder; The basic body shape may be a cube, a cuboid, a column or a prism, wherein at least two openings are present, one of these openings is the opening in the front surface of the attachment and the other opening associated with the feed chute.
A further basic design of the closure unit provides that the movable closing element is displaceably arranged in a vertical and / or horizontal plane or in a plane extending obliquely between the aforementioned planes. In addition, the movable closing element may consist of two parts, which are coupled together, wherein a part of the movable closing element in the vertical and the other part in the horizontal or in an obliquely arranged plane is displaceable. Preferably, one of these sub-elements of the opening in a front surface of the attachment and the other sub-element is assigned to the arranged in the upper housing part feed chute.

The invention is also characterized by a method for filling a document shredder using a paper shredder attachment according to any one of claims 1 to 5, in which the closing of the opening in the front surface of the attachment and the opening of the feed chute takes place at the same time according to a new procedure.
A continuation of the method provides that the closing of the opening in the front surface of the attachment and the opening of the feed chute takes place simultaneously and steadily progressing.
After another extension of the method is provided that the closing of the opening in the front surface of the attachment and the opening of the feed chute takes place at the same time and accelerated progressing.
In addition, a further embodiment provides that the closing of the opening in the front surface of the attachment and the opening of the feed chute takes place simultaneously and braked progressively.

In a special process embodiment, it is provided that the closing of the opening in the front surface of the attachment and the opening of the feed chute takes place simultaneously and progressively at intervals.
It should also be emphasized that in the present invention, in procedural expiry, during the closing process, the front lower body edge of the closing element is moved in the direction of movement substantially upwards or upwards and backwards. The movement / rotation of the preferably formed as a cylinder-shaped body closing element is not greater than 180 ° from the starting position and not rotating or rotating.

Figur 1:

den oberen Bereich eines teilweisen aufgeschnittenen Aktenvernichters in Seitenansicht mit aufgesetztem neuen Aufsatz und Stellung einer Verschlusseinheit in einer ersten Position und

Figur 2:

einen Ausschnitt aus der Figur 1 mit Stellung der Ver-Schlusseinheit in einer zweiten Position.

The invention is explained in more detail below with reference to a preferred embodiment schematically illustrated in drawings. The drawings show in detail:

FIG. 1:

the upper portion of a partially cut shredder in side view with attached new essay and position of a closure unit in a first position and

FIG. 2:

a section of the figure 1 with position of Ver-closing unit in a second position.

The constructive and essential details of the shown, advantageous Exemplary embodiment of the new attachment with integrated closure unit are shown in Figures 1 and 2, the relevant Designation of the components essentially follows from the reference numbers.

FIG. 1 shows a document shredder 1 in a partially sectioned illustration of its upper housing part. In the upper part of a cabinet-like lower part 2, the cutting unit 6, with cutting rollers and scrapers and an adjunct material disintegrator 7 is arranged in this embodiment. The cutting unit 6 is assigned a drive unit 5. In the front region 4 a of the upper housing part 4, a feed gap 8 with boundary surfaces 8 a and 8 b is arranged, which merges into a sliding surface 9, which ends here directly in front of the cutting unit 6. About this feed gap sheet material is placed in the shredder. Above the cutting unit 6, in this figure to the left of the feed gap 8, a feed chute 10 is provided, which is delimited by a housing upper part 4 arranged in the front surface 10a and rear surface 10b and by not further designated side walls of the housing upper part 4. The end portion 10b 'of the rear surface 10b terminates directly on the cutting unit 6. A portion of the upper housing part 4 is recessed above the feed chute 10; in this area, the new essay 11 is placed and fastened with its rear wall 13 via a hinge 19 on the upper housing part 4, whereby the attachment 11 can be tilted to the rear either.
For necessary repair or maintenance work, for example, to be able to remove non-cutting material, the article 11 is tilted backwards, with an unillustrated safety switch interrupts the operation of the cutting unit.

The closure unit 20 integrated in the attachment 11 is equipped with a movable closing element 21, which consists essentially of a horizontally rotatably arranged receiving trough 23 according to the patent claim 1. The not further designated axis of rotation of this receiving trough 23 is rotatably mounted in bearings 26, wherein the bearings 26 are secured to the side walls 14 of the attachment 11.
In the filling position P1, shown in FIG. 1, the half-shell 24 of the receiving trough 23 is in its lower position and closes the input lying between the components 10a and 10b in the feed chute 10.
In this position P1, the receiving trough 23 can be filled by the opening 17 provided in the front surface 15 of the attachment 11, which partially extends into the upper surface 12 of the attachment 11.
The lower, front closed front surface 16 is angled inward at the level of the front edge 21a of the movable closing element 21, here of the receiving trough 23, so that an upper edge 18 is formed, which is spaced with a small gap to the outer surface of the receiving trough.
If the receiving trough 23, which laterally filled by side walls 25 which form a full circle, the receiving trough 23 is rotated by an unillustrated actuating element in the direction of the arrow 22. In this case, the opening 17 closes in the front surface 15 of the attachment 11 and the feed chute 10 lying above the cutting unit 6 is increasingly released by the rear edge 21 b of the movable closing element 21, here the receiving trough 23. When reaching a position P2, shown in Fig. 2, the feed chute 10 is opened in about halfway.
At the front edge 21a as well as at the rear edge 21b of the movable closing element 21 stop elements not shown here are provided such that these edges 21a and 21b do not exceed the upper edge 18 of the lower closed front surface 16 and thus an unwanted engagement in the feed chute Cutting unit is prevented.

All mentioned in the foregoing description as well as only the removable from the drawing features are further components of the invention, even if they are not particularly highlighted and particularly mentioned in the claims.
The invention is not limited to the described embodiment but in the context of the disclosure often variable.

References directory

1

paper shredder

2

cupboard-like lower part

3

front door

4

Housing top (optional or partially removable)

5

power unit

6

Cutting unit (with cutting rollers and scrapers)

7

Loose material on

8th

feed gap

8a, 8b

boundary surfaces

9

sliding surface

10

feed chute

10a

front surface

10 b

rear surface

10b '

end

11

essay

12

upper surface

13

rear wall

14

right side surface (inside)

15

front surface

16

lower, closed front surface

17

Opening, in position 15

18

upper edge of position 16, angled inwards

19

hinge

20

shutter unit

21

movable closing element

21 a

front edge

21 b

rear edge

22

movement direction

23

receiving trough

24

half shell

25

Sidewall (full circle)

26

rotatable storage

27

boundary wall

28

cover

P1

position 1

P2

Position 2

Claims (10)

1. Attachment for paper shredders (1) for receiving and feeding documents, wherein the paper shredder (1) comprises a housing, preferably consisting of a cupboard-like lower part (2) and a selectably removable housing upper part (4), inclusive of cutting mechanism (6) arranged in the upper region of the housing (4), with cutting rollers and strippers, as well as an associated drive unit (5), wherein a feed shaft (10) for so-called crumpled paper is provided above the cutting mechanism (6) and the attachment (11) is arranged above this feed shaft (10) to be fixed or selectably removable, wherein the attachment (11) forms in common with a covered, interrupted upper region of the housing upper part (4) a receiving space for so-called crumpled paper and wherein this receiving space is disposed in connection with the feed shaft (10), characterised in that the attachment (11) comprises an integrated closure unit (20), which compnses movable or positionally variable parts, by which the filling opening (17) of the attachment (11) and the transition region between the receiving space and the feed shaft (10) are opened and closed in alternation, as well as comprises means for actuating and controlling the closure unit (20) or parts of the unit (20), wherein the closure unit (20) comprises a closing element (21) rotatable about a horizontal axis, and the movable closing element (21) of the closure unit (20) has a base body at which, with exception of approximately half the circumferential surface, there is formed a receiving trough (23) which is arranged to be rotatable by its body longitudinal axis about the horizontal.
2. Attachment for a paper shredder according to claim 1, characterised in that the base body of the movable closing element (21) is cylindrical.
3. Attachment for a paper shredder according to claim 1, characterised in that the movable closing element (21) substantially constructed as a hollow body has a body shape departing from a cylinder.
4. Attachment for a paper shredder according to claim 3, charactensed in that the movable closing element (21) formed by a hollow body is a cube, a block, a column or a prism, which has at least two openings, wherein one of these openings is associated with the opening (17) in the front surface (15) of the attachment (11) and the other opening in the body is associated with the feed shaft (10).
5. Method of filling a paper shredder with use of an attachment for a paper shredder according to one of patent claims 1 to 4, characterised in that closing of the opening (17) in the front surface (15) of the attachment (11) and opening of the feed shaft (10) take place at the same time and constantly in advance.
6. Method of filling a paper shredder according to patent claim 5, characterised in that closing of the opening (17) in the front surface (15) of the attachment (11) and opening of the feed shaft (10) take place at the same time and constantly in advance.
7. Method of filling a paper shredder according to patent claim 5, characterised in that closing of the opening (17) in the front surface (15) of the attachment (11) and opening of the feed shaft (10) take place at the same time and accelerated from one another.
8. Method of filling a paper shredder according to patent claim 5, characterised in that closing of the opening (17) in the front surface (15) of the attachment (11) and opening of the feed shaft (10) take place at the same time and braked in advance of one another.
9. Method of filling a paper shredder according to patent claim 5, characterised in that closing of the opening (17) in the front surface (15) of the attachment (11) and opening of the feed shaft (10) take place at the same time and in advance in terms of interval.
10. Method of filling a paper shredder according to patent claims 5 to 9, characterised in that during the closing process the front, lower body edge of the closing element (21) is moved substantially upwardly in movement direction (arrow 22) or upwardly and downwardly and wherein the movement/turning is preferably non-circulatory or non-rotational.

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