DE102012218680A1 - Apparatus for producing a padding product from paper - Google Patents

Abstract

The present device relates to a device (10) for producing a cushioning product from paper. The device (10) comprises a crusher (16), which compresses and / or crumples a paper web (34), a cutting mechanism (18) arranged thereafter in the conveying direction (38), which separates a section of the crumpled paper, and an ejection chute ( 20) with an output channel (124) which leads the separated paper section to an output opening (123) of the output channel (124). A cross-sectional height (W) and a curvature (K) of the discharge channel (124) are coordinated with one another in such a way that a typical user cannot reach the cutting mechanism (18) from the discharge opening (123) through the discharge channel (124).

Description

The present invention relates to a device for producing a padding product from paper according to the preamble of claim 1.

For filling voids in the packaging of articles, upholstery products made from paper webs by crumpling, as well as methods and apparatus for their manufacture, are known in a variety of ways. They are based e.g. that a paper web is first folded by machine and then compressed, whereby a crumpling takes place. From this continuously generated crumpled paper web then individual sections are cut to the desired length. This can be done with the help of a cutting unit in the same device. Preparing the paper web can also be taken laterally before crumpling.

That's how it shows DE 102 42 998 A1 an apparatus for making a padding product from paper, the apparatus comprising means for crumpling a continuous paper web to produce a swaged paper tube. For this purpose, a conveyor roller with counter-roller and a crumpling roller with counter-roller are arranged one behind the other in the device in the conveying direction of the paper web. In contrast to the crumple roller, the conveyor roller is driven at a higher rotational speed, whereby the paper is first compressed between the two pairs of bearing rollers and then crumpled by the crumpling roller.

The object of the present invention is to provide a device for producing padding products made of paper, which can be operated safely by an operator.

To achieve the object, it is proposed that a cross-sectional height and a curvature of an output channel of the device are coordinated so that a typical user can not reach a cutting device of the device from a dispensing opening through the dispensing channel.

It is understood that the radius of curvature and the cross-sectional height are generally dimensions that lie in a same plane.

The crumpled paper is separated into user-removable padding sections by a tear plate positioned in the cutter, similar to the principle of an accelerated drop or cleaver. The invention ensures that a user can not be injured by the cutting unit. The invention is based on the idea of configuring and designing the device, in particular the ejection shaft of the device or parts thereof, so that the cutting unit can not be reached by reaching into the discharge channel of the ejection shaft. The basic idea is that the human forearm is more or less a rigid rod, which can not follow a curved canal if its cross-sectional height is sufficiently small. The cross-sectional height can not be reduced arbitrarily, otherwise the crumpled paper can not be passed. The device according to the invention thus makes a significant contribution to accident prevention. The proposed geometric design of the output channel allows it at the same time to keep this relatively short, so that the device continues to build small.

In this case, the output channel may have a round or rectangular cross-section; preferred is a flat and wide trained rectangular cross-section. The output channel can be covered by a housing of the ejection shaft in such a way that in the overall picture of the device, irrespective of a possible complexity of the output channel, a visually appealing design results.

It is also possible that in the output channel in the conveying direction of the crumpled paper web slats are arranged, which stand up when reaching over the discharge opening in the output channel and thus prevent further retraction of the hand.

It is alternatively or additionally possible for the discharge chute to have at least the length of a typical human forearm. Thus, a possible reaching into the discharge chute is prevented up to the cutting unit alone on the length of the discharge chute. This possibility represents a simple and inexpensive solution, but requires more space.

All of these refinements serve to increase the safety of the operating personnel when operating the device according to the invention and to avoid accidents or injuries. It should be noted that the device is preferably operated in packaging or shipping departments, where several people use the device and not always all persons are trained in operating the device in detail.

In a preferred embodiment it is provided that the output channel is curved in an S-shape. This makes it possible that the longitudinal axes of the input and the output of the output channel are at least approximately aligned, ie at least approximately parallel to each other. The curvatures (radii) of the S-shape are so strongly formed that a human arm can not follow the given shape of the discharge channel. The curvatures of the S-shape can thereby horizontally and / or vertically. The curvatures should be as small as possible, so that the crumpled paper can easily follow the course of the discharge channel.

In addition, it is provided that a free, protruding from the device end portion of the ejection shaft is arranged substantially horizontally or inclined downwards. So it is realized that the ejected, crumpled paper automatically falls to the ground. There it may, for example, first be collected in a container to be removed from the container later during packaging in a desired amount. In particular, in the downwardly inclined embodiment, the risk is additionally reduced that lie in the output channel wrinkled pieces of paper remain.

It is also possible that the discharge chute has at least one lateral opening, optionally provided with a transparent cover, for observing the separated paper section. This allows possible malfunctions, such as a paper jam, are detected in the chute, which can then be quickly and effectively fixed by a trained service personnel.

It is also possible that the discharge chute is releasably attached to a housing of the device. The housing of the device can be self-supporting; but it may also include a stable base frame to which the discharge chute is attached. The releasable attachment may e.g. be realized by a simple and inexpensive screw.

It is particularly comfortable when the attachment comprises a snap connection. The housing could e.g. have an upwardly open groove into which a downwardly directed hook of the discharge chute against the Erdschwerkraft can be hooked form-fitting. On the opposite side of the groove / hook connection the latching connection is arranged on the housing, in which the discharge chute also engages positively. An opening of the locking connection can be done with a single handle. By such an attachment, the discharge chute, for example, can be quickly and easily loosened and repaired for service work and provides a reliable attachment of the discharge chute to the housing.

In a particularly securely designed embodiment of the device it is provided that the device comprises a security element which prevents the device being operable when the discharge chute is not attached to the housing of the device. In this case, the security element may comprise a switch, for example a magnetic switch or the like, which is arranged on a bearing surface of the ejection shaft on the housing. Only when the chute adjacent to the housing is closed by the switch, a circuit for operating the device according to the invention.

The security element may alternatively also be e.g. a sensor disposed on the support surface of the discharge chute on the housing, e.g. a pressure sensor, or a photodiode arranged there. Only when the security element determines the chute located on the housing, the circuit is closed.

Other features, applications and advantages of the invention will become apparent from the following description of an embodiment of the invention, which is illustrated in the drawing. All described or illustrated features alone or in any combination form the subject of the invention.

In the drawing show:

1 a highly schematic side view of essential components of an apparatus according to the invention for producing a padding product made of paper;

2 a side view of the device according to the invention for producing a padding product made of paper;

3 a perspective view of the device 2 ;

4 a perspective view of a crumb of the device according to the invention;

5 a view from above of the crumpling 4 ;

6 a side view of the crumpling 4 or 5 ;

7 a plan view of a cutting mechanism of the device according to the invention from a first side; and

8th a plan view of a cutting mechanism of the device according to the invention from a second side.

1 shows a highly schematic side view of essential components of a device according to the invention 10 for producing a padding product from paper. 2 shows a perspective side view of the device 10 from the outside; 3 shows a perspective view of the device 10 out 2 diagonally from above.

The device 10 essentially comprises a paper warehouse 12 , a folding table 14 , a crumple 16 , a cutting unit 18 and a chute 20 , Like from the 2 and 3 It can be seen, the folding table 14 , the crunchy work 16 and the cutting unit 18 at least partially from a housing 22 enclosed. In this case, the housing 22 to be self-supporting; but it can also include a stable base frame. The housing 22 is multi-part, so that in the housing 22 arranged devices, eg via lockable doors, are accessible. The device 10 is about a chassis 24 stored on rollers to the device 10 to design spatially movable.

The paper warehouse 12 can have two paper rolls 26a and 26b include continuous paper, wherein in the 2 and 3 only the paper roll 26a is shown. Every paper roll 26a and 26b may have a weight of some 100 kg. At rest of the device 10 are the paper rolls 26a and 26b rotatably mounted twice. On the one hand lie the paper rolls 26a and 26b on a pair of rotating bearing rollers 28a respectively 28b On the other hand, they lie on an inclined support surface 30a respectively 30b , The two bearing surfaces 30a and 30b are coated or made of a material having a high frictional resistance.

Via deflection rollers 32a and 32b becomes a paper web 34 the folding table 14 fed. In the folding table 14 are a variety of through holes 36 intended.

The folding table 14 used together with a lateral guide, not shown in the drawing to the edges of the flat paper web 34 to turn over so as to form a flat paper tube. In the transport of the paper web 34 on the folding table 14 Air gets through the openings 36 into a gap between the paper web 34 and the folding table 14 entrained, so the paper web 34 lying on an air cushion. This will cause the resistance between the paper web 34 and the folding table 14 reduced.

In conveying direction 38 the paper web 34 joins the folding table 14 the crunching 16 at. The 4 and 5 show the inside of the crumb 16 in detail. 4 shows the crumple 16 in a perspective view obliquely from the side; 5 shows the crumpling 16 in a view from above. The crunchy work 16 includes in the conveying direction 38 first saw a conveyor roller 40 and then a crumple roller 42 , The conveyor roller 40 and the crumple roller 42 is in each case a counter-roller 44 . 46 assigned.

The conveyor roller 40 and the crumple roller 42 be from a common drive motor 48 via a drive belt 50 driven. In the drive motor 48 it is preferably a so-called step motor. The step motor offers the advantage that it is very precisely adjustable in its speed and can be stopped without significant lag time. A reverse run is easily possible if required.

The conveyor roller 40 and the crumple roller 42 may be identical in their geometric dimensions, in the formation of the peripheral surfaces and in the material used for the production. Both rollers can 40 . 42 at least in some areas have a profiled, for example, corrugated, circumferential surface, as it is the 4 and 5 demonstrate. Also the two counter-rollers 44 . 46 can, in particular 4 shows to be identical. You can both have eg a rubberized peripheral surface. The counter-rolls 44 . 46 but also in an embodiment not shown for conveying roller 40 or to the crumple roller 42 be identical, so all four rollers 40 . 42 . 44 and 46 are identical.

The conveyor roller 40 and the crumple roller 42 according to the 4 and 5 a circumferential groove 52 on. In the groove 52 On the one hand, abrasion, in particular of the paper web, can occur 34 collect. The groove 52 prevents so that an unwanted coating on the peripheral surface of the conveyor roller 40 and the crumple roller 42 forms. On the other hand, the groove offers 52 an alternative space for the crumpled paper tube 34 during the processing.

The conveyor roller 40 and the crumple roller 42 each is a pulley 54 . 56 for driving via the drive belt 50 assigned. In the specific embodiment of the 5 and 6 includes the crumple 16 two lateral holding plates 58 and 60 that cross over struts 62 connected together, creating a cage-like and self-supporting housing construction for the crumple 16 is created. Both the conveyor roller 40 as well as the crumple roller 42 are non-rotatable on rotatable bearing shafts 64 . 66 stored, whose ends in turn in the holding plates 58 . 60 are rotatably mounted. The drive motor 48 is inside the crunchy plant 16 arranged. His drive shaft 68 penetrates the in 5 right holding plate 60 outward. On the outer end of the drive shaft 68 is rotatably with her a drive pulley 70 arranged.

The bearing shaft 64 the conveyor roller 40 penetrates the retaining plates 58 and 60 , On an outer end of the bearing shaft 64 on the retaining plate 60 is a pulley 72 arranged. This is about a drive belt 74 with the drive pulley 70 of the drive motor 48 coupled (see 6 ). The opposite outer end of the bearing shaft 64 the conveyor roller 40 penetrates the retaining plate 58 , On it is the pulley 54 arranged. The adjacent outer end of the bearing shaft 66 the crumple roller 42 also penetrates the retaining plate 58 , On it is the pulley 56 arranged. The two pulleys 54 and 56 are over the drive belt 50 coupled together.

Due to the different diameters of the two pulleys 54 and 56 will cause the feed roller 40 at about 1.5 times the speed of the crumple roller 42 rotates. It is also conceivable in another embodiment that the crumpling roller 42 and its associated pulley 56 as well as the conveyor roller 40 and its associated pulley 54 are integrally formed.

In an alternative, not shown embodiment of the device 10 It is also possible that a drive shaft of the drive motor 48 has two drive disks of different sizes, wherein a first drive pulley of the drive motor 48 with a larger diameter, the feed roller 40 drives and a second drive pulley of the drive motor 48 with a smaller diameter, the crumple roller 42 drives.

Both mating rolls 44 . 46 are at a pretensioner 76 arranged. The counter-rolls 44 . 46 are inside the pretensioner 76 on a common frame-like carrier 78 stored, the opposite the cross struts 62 by means of two spaced-apart adjustable spring elements 80 is resiliently supported. The counter-rolls 44 . 46 produce in this way an adjustable pressure for each counter roll on the peripheral surface of the conveying roller 40 or the crumple roller 42 and do not have their own drive.

In conveying direction 38 the paper web 34 joins the crumple 16 the cutting unit 18 which also as a modular unit on its own base plate 82 is trained. The 7 and 8th each show a plan view of the cutting unit 18 from two opposite sides, taking 7 the actual cutting unit 18 and 8th a drive 84 of the cutting unit 18 shows. It can be seen that the conveying direction in the cutting unit 18 opposite the conveying direction in the kneading plant 16 at an angle, in this case of about 90 °.

The drive 84 is designed as a cam-controlled eccentric drive. The drive 84 comprises a turn designed as a stepper motor drive motor 86 who is on the in 7 shown side of the cutting unit 18 is arranged and over three gears 88 . 90 and 92 and two timing belts 94 . 96 a backdrop eccentric 98 that drives over a pin 99 displaceable in a slot 101 in a connecting rod 100 engages and so with a backdrop role 102 connected is. This in turn is coupled to a carriage, which in one in the housing plate 82 existing longitudinal slot 104 linearly guided and with a linearly guided clamping plate 106 connected is. This is below a rectangular opening 108 in the housing plate 82 arranged at the top one in operation with the clamping plate 106 cooperating stationary counter surface 110 is available.

Furthermore, the cutting unit comprises 18 one above the opening 108 arranged tear-off plate 112 with a slightly obliquely set and provided with departure teeth tear-off 114 , The tear off plate 112 is about two lateral and on the housing plate 82 linear guided push rods 116 with a movable cross member 118 connected, in turn, via a connecting rod 120 with the gear 92 or the cam eccentric 98 connected is. The push rods 116 are also part of the linear guide of the clamping plate 106 , The tear off plate 112 is in a recess 122 led (see 1 ).

Furthermore - in the conveying direction 38 the paper web 34 seen - joins the cutting unit 18 the discharge chute 20 at ( 1 to 3 ). The discharge chute 20 has inside an elongated and presently S-shaped curved output channel 124 (please refer 1 ) on. A free, from the device 10 protruding end section of the ejection shaft 20 is arranged substantially horizontally or inclined downwards. The curvature K and the width W of the output channel 124 are chosen so that a person does not use the fingertips of one hand through a dispensing opening 123 in the output channel 124 to the cutting unit 18 can penetrate. This can be further supported by the chute 20 at least the length of a typical human forearm.

The discharge chute 20 is detachable on the housing 22 attached. The attachment can eg a screw connection (see screws 125 in the 2 and 3 ) or a snap connection. When using the latching connection (not shown), the housing 22 For example, have an upwardly open groove into which a downwardly directed hook of the ejection shaft 20 can be hooked against the Erdschwerkraft form-fitting. On the opposite side of the groove / hook connection, the latching connection is arranged, in which the discharge chute 20 also positively locks.

To improve accident prevention measures, the device 10 a security element (not shown), which prevents the device 10 is operable when the chute 20 not on the case 22 is attached. In this case, the security element may include, for example, a switch, a pressure sensor or a photocell, wherein the security element on a bearing surface of the ejection shaft 20 on the housing 22 is arranged. Only at the case 22 adjacent discharge chute 20 By the security element is a circuit for operating the device according to the invention 10 closed.

Near the paper rolls 26a and 26b is a switch 126 for switching the device on and off 10 arranged, which can be preferably operated manually in the manner of a button and with a control of the device, not shown in the drawing 10 connected is.

The device 10 works as follows: The paper web 34 is done by switching on the drive motor 48 from the roll of paper 26a through the conveyor roller 40 with its counter-roller 44 deducted. By the in 1 essentially upward pulling force of the paper web 34 on the roll of paper 26a lifts them slightly from the support surface 30a from (see dashed circle line 128 ), leaving the roll of paper 26a essentially only on the bearing roller 28a rests and thus can be rotated with little resistance. Is the drive of the paper web 34 interrupted, for example, a paper tear, the paper roll falls 26a on the support surface 30a back. Due to the friction between the support surface 30a and the roll of paper 26a becomes the rotation of the paper roll 26a strongly decelerated. A possible further rotation of the paper roll due to inertia 26a is prevented or at least greatly reduced.

Because of that in the device 10 two paper rolls 26a and 26b can be stored, the device can 10 be operated comparatively long, without having to be brought from an external warehouse a new roll of paper. Is the paper of the paper roll 26a In addition, the paper roll can be used 26b be used immediately, it does not have to be lifted out of its storage position. This is indicated by a dashed line in the drawing 130 shown. It is also possible that at the same time from both rolls of paper 26a and 26b Paper is pulled off, so a two-ply paper web 34 in the device 10 is processed.

For inserting the paper web 34 into the device 10 for example after a paper tear or if a new paper roll 26a or 26b is started, among other things, also serves the button 126 , By pressing the button 126 becomes the drive motor 48 set in motion, facilitating threading. By the arrangement of the button 126 right near the paper rolls 26a and 26b the threading is facilitated and accelerated. The button 126 can also serve the crumple 16 to run backwards for a while to remove any paper jam.

The crumpling of the paper tube 34 in the crumb 16 is in a conventional manner by the rotating at different speeds rotation conveyor roller 40 and crumple roller 42 and each counter-rotating rollers 44 . 46 achieved.

The compressed and crumpled paper web 34 will then the cutting unit 18 fed. At the request of the operator is by the above-described eccentric drive 84 first the clamping plate 106 against the counter surface 110 moved and the crumpled paper web 34 thereby between clamping plate 106 and counter surface 110 jammed. By the further rotation of the gear 92 becomes the tear off plate 112 in the clamped and crumpled paper tube 34 moved in and this separated by this. By further rotation of the eccentric drive 84 pull the tear plate 112 and then the clamping plate 106 back. A complete clamping and tear-off sequence is achieved by a 360 ° rotation of the gear 92 and the Kulissenexzenters 98 causes.

The crumpled and severed paper web 34 is through the subsequent paper web in the output channel 124 the ejection shaft 20 moved into it. The from the cutting unit 18 severed compressed paper webs 34 can then be at the projecting end of the discharge chute 20 be removed. Due to the elongated S-shape of the discharge chute 20 It is impossible with the arm and the hand, for example, in a paper jam in the chute 20 reach in so far that there is a danger that the hand will reach into the area of the cutting unit 18 arrives.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10242998 A1 [0003]

Claims (7)

Contraption ( 10 ) for producing a padding product from paper, with a crumpling ( 16 ), which is a paper web ( 34 ) bends and / or crumbles, one in the conveying direction ( 38 ) seen after arranged cutting ( 18 ), which separates a section of the crumpled paper, and a discharge chute ( 20 ) with an output channel ( 124 ), the separated paper section to a discharge opening ( 123 ) of the output channel ( 124 ), characterized in that a cross-sectional height (W) and a curvature (K) of the output channel ( 124 ) are matched to one another and / or a length of the output channel ( 124 ) is selected so that a typical user of the dispensing opening ( 123 ) out through the output channel ( 124 ) through the cutting unit ( 18 ) can not reach. Contraption ( 10 ) according to claim 1, characterized in that the output channel ( 124 ) Is curved in an S-shape. Contraption ( 10 ) according to claim 1 or 2, characterized in that a free, of the device ( 10 ) projecting end portion of the ejection shaft ( 20 ) is arranged substantially horizontally or inclined downwards. Contraption ( 10 ) according to one of the preceding claims, characterized in that the discharge chute ( 20 ) has at least one lateral, optionally provided with a transparent cover opening. Contraption ( 10 ) according to one of the preceding claims, characterized in that the discharge chute ( 20 ) detachable on a housing ( 22 ) of the device ( 20 ) is attached. Contraption ( 10 ) according to claim 5, characterized in that the attachment comprises a latching connection. Contraption ( 10 ) according to one of claims 6 or 7, characterized in that it comprises a security element which prevents the device ( 10 ) is operable when the chute ( 20 ) not on the housing ( 22 ) of the device ( 10 ) is attached.

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