DE102008010987A1 - Device for discharging substrates - Google Patents

Abstract

The invention relates to a device (200) for discharging and a folding box gluing machine (1000) with such a device (200). The device (200) for discharging printing substrates (38), such as sheets or folding box blanks made of paper, cardboard and the like, which are guided by at least two parallel arranged conveyor belt pairs (9, 10), each having an upper (9) and lower (10 ) Have conveyor belt, per conveyor belt pair has a deflection element (7). Depending on a deflection element (7), deflects the respective upper (9) and lower (10) conveyor belt relative to the horizontal conveyor plane (E) down, thereby causing the auszuschleusenden substrates (38) by the deflected belts (9, 10 ) are derived from their horizontal transport direction (T) in a discharge direction (A). The deflection elements (7) are connected directly or indirectly to a shaft (2) and the shaft (2) is driven by an actuator (1), in particular a servomotor.

Description

The The invention relates to a device for discharging substrates according to the preamble of claim 1 and a Faltschachtelklebemaschine according to the preamble of claim 12.

• • Einen Einleger, der die zu verarbeitenden Zuschnitte mit hoher Geschwindigkeit aus einem Stapel nacheinander abzieht und einzeln der nachfolgenden Bearbeitungsstation zuführt,
• • eine Faltstation, in der die mit einem Klebestreifen versehenen Zuschnittteile zur Herstellung einer Klebeverbindung um 180° umgelegt, also gefaltet werden,
• • eine Überleitstation, die die gefalteten, mit noch nicht abgebundenen Klebenähten versehenen Zuschnitte in allen Teilen exakt ausgerichtet der nachfolgenden Sammel- und Presseinrichtung zuführtwerden, und
• • eine Sammel- und Presseinrichtung, in der zunächst ein Schuppenstrom aus gefalteten Zuschnitten gebildet wird, der anschließend zwischen Pressbändern für einige Zeit unter Druck gehalten wird, damit die Klebenähte abbinden.

Folding box gluing machines for producing folding boxes from blanks have, as is known, at least the following processing stations:

• • An inserter, which pulls the blanks from a stack one after the other at high speed and feeds them one by one to the following processing station,
• A folding station in which the blank parts provided with an adhesive strip are folded by 180 °, ie folded, for the purpose of producing an adhesive bond,
• A transfer station, which supplies the folded blanks, which have not yet been bonded, to the subsequent collecting and pressing device in all parts, and
• • A collection and pressing device, in which a shingled stream of folded blanks is first formed, which is then held under pressure between press belts for some time, so that the adhesive seams set.

ever according to the type of box to be produced, the machine can be further processing stations contain; For example, one or more primary crushers in which Folding flaps are folded back and forth so that the corresponding Longitudinal grooves by bending by 180 ° soft and be made supple, and more folding stations to additional Perform folding. At the beginning of a folding station is usually an applicator for adhesive arranged on the to adhesive flap applies an adhesive strip.

The Blanks are powered by the individual stations through Promoted funding. As driven conveyors Two or three conveyor belt pairs are used, the are arranged with transverse spacing so that they are the blanks of Leading up and down.

In order to remove faulty folding carton blanks or folding cartons from the conveying stream, ejecting devices are known from the prior art in addition to plate and linear ejectors:
The patent DE 698 16 717 T2 underlying invention describes a sorting device in a conveyor. Machines for processing successive sheets of paper or board are followed by conveyors, which are formed by upper and lower conveyor belts, which transport the products safely. In order to be able to sort out products that do not meet the quality requirements, sorting devices are used. These devices, also called ejector, must be able to sort out products in a short time, without causing a material jam.

The DE OS 1 223 682 shows a device for sorting out guided between upper and lower conveyor belts bow. The sorting is done by a deflection member (which is designed as a pivotally mounted cross member) deflects the upper band against the conveying plane down. In the transport direction behind the deflection member is a guide member, which is designed as a fixed guide wedge. The guide wedge has a horizontal and an inclined surface, wherein the horizontal surface in the transport plane of arc is that are not discharged and the inclined surface forms the guide channel for auszuschleusende products. Products that are discharged are transported by a lower conveyor. The exclusive transport through the lower conveyor happens only on a limited distance. Over the majority of the transport section of auszuschleusende sheet is clamped by an upper and lower conveyor and safely transported away.

The GB 2 264 699 A shows a device for cutting sections of fabric sheets and for discharging them. A fabric, driven by rollers, is transported between guide plates. If a tissue section is detected that does not meet the quality requirements, the critical section in the area of the device is cut out. For this purpose, a first knife moves into the transport plane and forms the front edge of the section through the cut. The knife also serves as a switch, which discharges the section along a guide plate. As far as the rear end of the section passes a second knife, this separates the section of the subsequent tissue and the horizontal transport direction is released immediately. To prevent material jams and to remove the ejected sections quickly and safely, the section is gripped by two opposing rollers. One of the rollers is driven, wherein the speed of the roller is greater than the transport speed in the horizontal transport direction.

The DE PS 1 113 358 shows a device for eliminating defective sheet in sheet-making and processing machines, in which the sheets are moved between endless conveyor belts and faulty sheets are eliminated by deflecting parts of the conveyor belts: means Guide rollers pivot both parts of the upper and lower conveyor belts out of their normal horizontal position. The guide rollers are pivoted about a common fixed axis. How the discharged sheets are transported further, will not continue.

Problematic in the known from the prior art discharge devices is their high reaction time and inaccurate reproducibility the movement of discharge elements, which the discharge a carton blank or a carton. The reproducibility is further diminished, though the respective discharge elements by a respective pneumatic cylinder are driven.

task It is therefore an object of the present invention to provide a device for the To create a discharge of printing materials, which is a reliable discharge of substrates allowed.

Solved This object is achieved in an advantageous manner by a device for discharging with the characterizing features of claim 1 and by a Faltschachtelklebemaschine with the characterizing Features of claim 12.

In the device according to the invention for discharging of printing substrates are the substrates, such as sheets or folding box blanks Paper, cardboard and the like arranged by at least two parallel Conveyor belt pairs led, each one upper and have lower conveyor belt. The device for discharging has further deflection elements, each pair of conveyor belts having a deflection element assigned. A respective deflection element serves to the respective upper and lower conveyor belt relative to the horizontal conveyor plane to deflect downwards. As a result, the substrates to be rejected by the deflected bands from their horizontal transport direction derived in a discharge direction and from the flow away. Advantageously, the deflection elements are indirect or directly connected to a shaft and the shaft is going through an actuator driven. The actuator may be a Pneumatic cylinder, a hydraulic cylinder, a controllable electric motor or in particular act a servomotor. The deflection elements can either be arranged directly on the shaft or they are connected via intermediate elements with the shaft.

In a particularly advantageous embodiment are thereby Eccentric discs mounted rotationally on the shaft, each an eccentric disc associated with a respective deflecting element is and acts on this. The rotation of the shaft with the eccentric discs and the transmission of the movement of the eccentric discs on the deflecting causes the deflecting the Außenken the conveyor belts and thus the discharge of a substrate trigger.

In an advantageous development of the device for discharging is - in the direction of rejection - after the deflecting element or the deflecting elements arranged a baffle, which at a shallow angle to the horizontal conveying plane is appropriate. The substrates to be rejected are in the rejection direction along the baffle. Advantageously, the Baffle opposite a driven ejector roller arranged so that a auszuschleusender substrate between baffle and Ejector roller is conveyed clamped. The peripheral speed the ejector roller is greater than or equal to the Speed of horizontal conveyor belts to one auszuschleusenden substrate quickly from the vertical flow remove from printing materials.

In a first advantageous embodiment of the device described is opposite the driven ejector roller in the baffle a plurality of parallel arranged rolling bearings embedded, a so-called rolling bearing package. At the rolling bearings it may be in particular radial ball bearings. The rolling bearings are pushed with their inner rings on an axis, which are parallel to the axis of the ejector roller. The outer rings of the rolling bearings are raised above the baffle. This will be ejected Substrates between ejector roller and outer rings of the roller bearings clamped promoted.

In a second advantageous embodiment of the device is compared the driven ejector roller in the baffle a plurality let in by rotatable balls. The balls are each through held a cage and are positioned so that a dome of the ball is raised against the baffle. Auszuschleusende substrates are thus between ejector and Promoted balls clamped.

In a third advantageous embodiment of the device is compared the driven ejector roller arranged a second roller whose axis is arranged parallel to the axis of the ejector roller. The lateral surface the second roller is raised above the baffle. Shims to be ejected are clamped between both rollers promoted.

Regardless of the configuration of the counter element of the ejector roller, the ejector roller can be made rubberized, whereby the friction value between roll and auszuschleusendem substrate can be optimized. In an alternative advantageous embodiment, the ejector roller is provided with teeth or needles, which ensures that the substrate to be ejected is reliably removed from the horizontal flow.

The The invention also relates to a folding box gluer with a as described above device for discharging. In an advantageous embodiment of Faltschachtelklebemaschine is the device for discharging as a separate Machine module of Faltschachtelklebemaschine is constructed and is arranged upstream of a transfer station of Faltschachtelklebemaschine. Next, the transfer station and the device for Outfeed designed so that this with different Speeds can be operated. If z. B. the transfer station at a higher speed than the device for Operated, so it remains for the process of removal more time because the box spacing increases can be.

The The invention also relates to a folding box gluing machine with a transfer station and a device for discharging substrates, wherein the substrates such as sheets or folding carton blanks made of paper, Cardboard and the like arranged by at least two parallel Conveyor pairs are performed, each having an upper and have a lower conveyor belt. The device for discharging has further deflection elements, wherein one deflection element per conveyor belt pair is present. A respective deflection element causes the deflection of the upper and lower conveyor belt downwards relative to the horizontal conveying plane. The auszuschleusenden Substrates are produced by the deflected conveyor belts from its horizontal transport direction in a discharge direction derived. The device for discharging is advantageously upstream the Überleitstation arranged and the Überleitstation and the device for discharging can with different Speeds are operated.

Regarding further advantages and advantageous embodiments of the invention is based on the subclaims as well as the description of a Embodiment with reference to the accompanying Drawings referenced.

embodiment

The Invention will be even closer to a Ausfürungsbeispiels be explained. It show in a schematic representation

1a a section of a Faltschachtelklebemaschine while not ejected

1b a section of a Faltschachtelklebemaschine while ejected.

2a a detail view of the device for discharging while not discharged

2 B a detail view of the device for discharging while discharged

3 a spatial representation of the device for discharging

4 an alternative embodiment of the device for discharging

1a shows the device for discharging 200. with the adjacent machine modules folding station 100 and transfer station 300 as a detail of a folding box gluing machines 1000 , The device for discharging 200. is in the "Do not eject the carton box" position, as indicated by the ejector lever 7 and the spring-loaded lever 13 are in their uppermost position. The evaluated as faultless folding cartons 3800 are further promoted in the horizontal direction of transport T and to the transfer station 300 to hand over.

Also the 1b shows the device for discharging 200. with the adjacent machine modules folding station 100 and transfer station 300 , The device for discharging 200. is in its position "eject the reject box." This is evident from the fact that the ejector lever 7 and the spring-loaded lever 13 are in their lower position. The folding box to be removed 38 is from the horizontal transport direction T at a shallow angle in the discharge direction A at a Ableitblech 28 passed by and from the deflector 28 opposite arranged driven ejector roller 27 taken over, transported down and so discharged.

2a shows the device for discharging 200. in the condition "Do not eject carton" in a detailed view 7 is in its uppermost position, at top dead center. The location is designed so that the thickest to be processed cartons 3800 is not touched in straight-ahead travel T, that is, when it is not ejected, in order to avoid damage such as markings. The spring-loaded lever 13 is also in the top position. This position is determined by the stop pin 14 defined, on the lever 13 with spring force (spring 15 ) applies.

At the position 37 could be in the deflector 28 be embedded a friction-reducing counter element. The counter-element may be, for example, a plurality of rolling bearings, a plurality of balls or a roller.

2 B shows the device for discharging 200. in their position "reject reject box" in a detail view, which can be seen in the fact that the ejector lever 7 and the spring-loaded lever 13 each in their lowest position. The drive of the ejector lever 7 done by means of a servomotor 1 , a coupling (not shown) and a hexagonal shaft 2 , The hexagonal shaft 2 turns an eccentric 3 , The eccentric 3 in turn drives a coupling link 4 on, that in the crosspoint 5 with the ejector lever 7 connected is. The ejector lever 7 pivots about the axis 8th which represents a frame point. The hexagonal shaft 2 is also fixed. The foremost role of the ejector lever 7 pushes the upper conveyor belt 9 downward. This will also lower the conveyor belt 10 deflected downwards. In addition, the spring-loaded lever 13 from the ejector lever 7 over the tapes 9 and 10 for the removal of folding cartons identified as defective 38 pressed down. The folding box to be removed 38 , also referred to as a reject box, is characterized by the two deflected driven conveyor belts 9 and 10 between the deflector 28 and the rubberized driven ejector roller 27 directed. The ejector roller 27 is by means of the adjustment eccentric 23 over the lever 24 adjusted so that the ejector roller 27 not at the discharge plate 28 grinds. The adjustment eccentric 23 acts on the lever 24 , which is about the frame point of the axis 21 can spring-loaded rotate.

The drive of the lower conveyor belt 10 takes place permanently through the drive pulley 19 , in the drive pulley 19 is frame-mounted on the drive shaft 18 stored. The upper conveyor belt 9 is about a connection instinct 16 and a drive pulley 17 with the drive of the lower conveyor belt 10 coupled and powered with.

3 is a perspective view of the device for discharging 200. without the adjacent machine modules. It shows the folding carton transport in folding carton gluing machines. This is usually either single track or as here two lanes running. The two-lane serves to prevent the twisting of wide cartons and to be able to transport and fold them safely. A conveyor belt pair each consists of an upper conveyor belt 9 and a lower conveyor belt 10 , Each conveyor belt pair is an ejector lever 7 (not shown) assigned. This results in that in the 1a . 1b . 2a and 2 B illustrated elements ejector lever 7 , Eccentric drive 3 . 4 , spring-loaded lever 13 and conveyor belts 9 . 10 are duplicated. The control of the two ejector levers 7 over the two eccentrics 3 takes place via only one hexagonal shaft 2 and a servomotor 1 ,

4 shows an alternative embodiment of the device for discharging 200. , It is in the 1 - 3 shown ejector roller 27 through a smaller pulley 39 been replaced. The pulley 39 is also from the bottom conveyor 10 driven. The ejection speed is equal to the carton transport speed, ie the speed of the conveyor belts 9 and 10 , The necessary coefficient of friction for transporting the reject box 38 is via a line contact of the conveyor belt 10 with the box to be removed 38 and the deflector 28 generated. The deflector 28 is in contrast to the deflector 28 of the 1 - 3 slightly modified: the deflector 28 is slotted and surrounds the pulley 40 , The pulley 40 and the two rollers arranged to the left 34 are designed without conveyor belt and are driven only passively. The pulley 40 is smaller in radius than the two rollers 34 executed. Next is the pulley 40 arranged slightly below the conveying plane E, so as not to hinder straight-line travel in the transporting direction T. This has the advantage that the pulley 40 can rotate counterclockwise, without doing the promoted in the transport direction T cartons 3800 to damage. The deflector 28 can get in the gap between the roles 40 and 41 be pulled, thereby improving the threading of the rejects box 38 between deflector 28 and pulley 39 so that the folding cartons to be ejected 38 can be safely removed.

1

servomotor

2

Hexagonal shaft

3

eccentric

4

Exzenterkoppelglied

5

Crosspoint of 4 and 7

7

ejector

8th

swivel axis

9

upper conveyor belt

10

lower conveyor belt

13

spring-loaded lever

14

stop pin

16

Connecting drive for drive from 9

17

Drive pulley for 16

18

drive shaft

19

Drive pulley for 10

21

Pivot axis of 24

23

adjusting eccentric

24

lever

27

driven role

28

deflector

34

transport roller

38

discharged is box

39

idler pulley

40

idler pulley

41

role

100

folding station

200

contraption for discharging

300

transfer station

1000

gluer

3800

folding

A

outward transfer

T

transport direction

e

conveying plane

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 69816717 T2 [0005]
• - DE 1223682 A [0006]
• - GB 2264699 A [0007]
• - DE 1113358 [0008]

Claims (12)

Contraption ( 200. ) for the removal of substrates ( 38 ), such as sheets or folding carton blanks made of paper, cardboard and the like, which are separated by at least two pairs of conveyor belts arranged in parallel ( 9 . 10 ), each one upper ( 9 ) and lower ( 10 ) Have conveyor belt, and each having a deflection element ( 7 ), which the respective upper ( 9 ) and lower ( 10 ) Deflects conveyor belt downwards relative to the horizontal conveying plane (E), whereby the substrates to be rejected ( 38 ) by the deflected bands ( 9 . 10 ) are derived from their horizontal transport direction (T) in a discharge direction (A), characterized in that the deflection elements ( 7 ) with a wave ( 2 ) are directly or indirectly connected and the shaft ( 2 ) by an actuator ( 1 ), in particular a servomotor, is driven. Device for discharging according to claim 1, characterized in that on the shaft ( 2 ) Eccentric discs ( 3 ) are mounted rotationally fixed, each having an eccentric ( 3 ) a respective deflection element ( 7 ) is assigned and acts on this, wherein the rotation of the shaft ( 2 ) with the eccentric discs ( 3 ) by the deflection elements ( 7 ) the deflection of the conveyor belts ( 9 . 10 ) and thus the ejection of a printing substrate ( 38 ) causes. Device for discharging according to one of claims 1 to 2, characterized in that in the discharge direction (A) after the deflection element ( 7 ) a baffle ( 28 ) is arranged, which is arranged at a shallow angle to the horizontal conveying plane (E). Device for discharging according to claim 3, characterized in that the guide plate ( 28 ) against a driven ejector roller ( 27 ) is arranged so that a auszuschleusender substrate ( 38 ) between baffle ( 28 ) and ejector roller ( 27 ) is clamped, wherein the peripheral speed of the ejector roller ( 27 ) greater than or equal to the speed of the conveyor belts ( 9 . 10 ). Device for discharging according to claim 4, characterized in that opposite to the driven ejector roller ( 27 ) in the baffle ( 28 ) a plurality of mutually parallel rolling bearings, in particular radial ball bearings, are inserted, which with their inner rings on an axis parallel to the axis of the ejector roller ( 27 ) are pushed and their outer rings raised against the baffle ( 28 ) are. Device for discharging according to claim 4, characterized in that opposite to the driven ejector roller ( 27 ) in the baffle ( 28 ) are embedded a plurality of rotatable balls which are raised relative to the guide plate ( 28 ) are. Device for discharging according to claim 4, characterized in that opposite to the driven ejector roller ( 27 ) a second roller with an axis parallel to the axis of the ejector roller ( 27 ) is arranged, the lateral surface raised against the baffle ( 28 ). Device for discharging according to one of claims 4 to 7, characterized in that the ejector roller ( 27 ) is rubberized. Device according to one of claims 4 to 7, characterized in that the ejector roller ( 27 ) is provided with teeth or needles. Folding box gluer ( 1000 ) with a device for discharging ( 200. ) according to one of the preceding claims. Folding box gluing machine according to claim 10, characterized in that the device for discharging ( 200. ) as an independent machine module of the folding box gluer ( 1000 ) and upstream of a transfer station ( 300 ) of the folder gluer ( 1000 ) and that transfer station ( 300 ) and device for discharging ( 200. ) can be operated at different speeds. Folding box gluer ( 1000 ) with a transfer station ( 300 ) and a device for discharging ( 200. ) of substrates ( 38 ), such as sheets or folding carton blanks made of paper, cardboard and the like, which are separated by at least two pairs of conveyor belts arranged in parallel ( 9 . 10 ), each one upper ( 9 ) and lower ( 10 ) Have conveyor belt, and each having a deflection element ( 7 ), which the respective upper ( 9 ) and lower ( 10 ) Deflects conveyor belt downwards relative to the horizontal conveying plane (E), whereby the substrates to be rejected ( 38 ) by the deflected bands ( 9 . 10 ) are derived from their horizontal transport direction (T) in a discharge direction (A), characterized in that the device for discharging ( 200. ) upstream of the transfer station ( 300 ) and that transfer station ( 300 ) and device for discharging ( 200. ) can be operated at different speeds.