EP2988926A1

EP2988926A1 - Folding station and folding-box adhesive-bonding machine

Info

Publication number: EP2988926A1
Application number: EP15717854.2A
Authority: EP
Inventors: Bernd Herfurth
Original assignee: KAMA GmbH
Current assignee: KAMA GmbH
Priority date: 2014-05-19
Filing date: 2015-04-15
Publication date: 2016-03-02
Anticipated expiration: 2035-04-15
Also published as: US20170057191A1; TW201544306A; EP2988926B1; TWI574835B; JP2017518900A; CN106457727A; JP6197129B2; DE102014107031A1; WO2015176875A1; ES2601081T3; CN106457727B

Abstract

Folding station and folding-box adhesive-bonding machine. The invention relates to a folding station for deforming flat workpieces, comprising at least one group of k guide mechanisms (2), which are fitted at a variable distance from one another along an arrangement line (3), wherein the guide mechanisms are operatively connected to a common, proportionally active adjustment device (4) which, during operation, varies the distances between in each case two adjacent guide mechanisms of the group of guide mechanisms uniformly along the arrangement line, and also relates to a folding-box adhesive-bonding machine having a transporting device for folding-box blanks and having at least one such folding station.

Description

Folding station and folder gluer

The invention relates to a folding station for forming flat workpieces, in particular in the production of

Cartons made of carton blanks, as well as a

Faltschachtelklebemaschine with such a folding station.

Become in folding box gluing machines

Faltschachtelzuschnitte along a conveying path promoted with a predeterminable conveying speed, wherein the

Faltschachtelzuschnitt a settlement of the carton to be produced, which has a central part and laterally arranged side panels. For the production of

Folding box, the side parts along Falzrillen that run between the middle and side panel,

successively to the longitudinal center of the blank over a

Folding line pivoted inward and finally merged and glued together.

From DE 102 41 448 a folding box machine

Known for folding carton blanks in

Forming folding carton tubes. The

Faltschachtelzuschnitte correspond to the settlement of a folding carton to be produced. The wrinkles must be with

considerable precision, because this is the angle accuracy of the finished carton crucial

certainly .

To produce the carton tube, will be so-called folding belts or folding belts used, which are attached to the parts to be folded, the side parts of the

Apply folding carton blank and force folding along the fold line. The folding belts run with their

Workstrum along a kind of helical line, the

Folding strap acts on the parts to be folded. So that the folding movement is done properly, run the

Folding belt with a web speed that the

Path speed of the blank corresponds. To the

To ensure angular accuracy of the finished carton, in the fold line a plurality of loosely rotatable discs arranged near the fold lines the

Touch folding carton blank.

Another folding station for folding blanks is known from DE 44 39 198 AI. The folding is done in a conventional manner by so-called folding belt, which seize the side flaps from below. The folding belts run from a plane below to a plane above the middle part. The axes of the folding belt are in this case entangled to each other such that the blank

facing folding belt surface along the conveying path of the blank by a total of 180 ° turns. In order to comply with the specified narrow tolerances when folding the blanks, a folding device in the region of the fold lines of the blanks is arranged in the front region of the conveying path.

EP 1 604 812 A1 describes a folding station in which the distance of the folding belt to the fold line of the blank is designed to be adjustable, so that the folding belt always acts on an outer region of the side part. This makes it possible to different cuts on the for the

Fold the most favorable area of the side parts. The adjustment of the folding belt leading guide rollers, however, is possible only by separate loosening, moving and attaching each guide roller. These Working is tedious and therefore leads to long

Downtimes when the machine needs to be adjusted for a smaller or larger carton blank. An object of the invention is therefore a

Specify folding station, which allows a quick, easy and accurate adjustment of the management organs, so that the folding station in a simple and fast way to another, for example, larger or smaller,

Faltschachtelzuschnitt is customizable.

This is flatter at a folding station for forming

Workpieces having at least one group of guide members which along an arrangement line with

variable distance w are attached to each other,

suggested that the governing bodies with a

common proportionally acting adjusting device are operatively connected, which in operation, the distances between each two adjacent management bodies of the group of

Organs changes evenly along the layout line.

In other words, k guide members by pressing a common adjusting device of a fixed

Viewed from the transport path from considered shifted by k times a predetermined displacement. This means that the adjusting device moves the first guide member (k = l) by an amount s of the path along the arrangement line, at the same time the second guide member (k = 2) by the amount 2s, the third guide member (k = 3) to the Amount 3s, etc. is moved. The adjustment paths of the individual

Leaders are thus proportional to their count index, i. it is a proportional acting

Adjustment, which means that the distances between each two adjacent governing bodies change evenly and in this way the amounts by which the distances depending two neighboring governing bodies when operating the

Change adjustment device, each with the same size.

Under management bodies should be understood means that are suitable for a tab of a

Faltschachtelabschnitts to act so that this tab during transport along the transport path of a

Folding box gluer, i. parallel to

Arrangement line of the management bodies, is folded relative to the rest of Faltschachtelzuschnitt.

Such guide members may for example be rollers, stirrups or Pflugfalzschienen acting under a relative to the transport direction of Faltschachtelzuschnitte incrementally variable angle directly to the Faltschachtelzuschnitt, or just such elements that support a along the transport path twisting folding belt, in which case the folding belt that Element is that acts directly on the carton blank.

The basic idea of the invention is that

Folding station with one at a time on several

Provide management organs proportionally acting adjusting device, regardless of how the adjusting device is configured concretely. Each adjusting device, which simultaneously acts on a plurality of management bodies and thereby the relative distances between the management bodies k and k + 1 (w _{k / k + 1} ) mutually evenly changed so that the increase or decrease of the distances between them is the same at any time (Aw _{k / k + 1} = const.), is called

Adjustment device in the sense of the disclosed teaching

considered.

In the simplest case, each guide element is provided with its own drive device, for example one

Servomotor, operatively connected, and all drive equipment are controlled so that the governing bodies like

described are moved proportionally. Although such a

Embodiment is relatively expensive, it should be considered as falling under the inventive idea. This includes, for example, adjusting devices as shown schematically in Fig. 1, in which the

Adjusting means for each guide member having a force acting on this guide member gear, each of these gear has a different ratio. As a drive spindle, for example, a shaft can be used, are attached to the other elements of the adjusting device, such as gears, pulleys, threaded sleeves or the like, stationary or axially displaceable. In addition, the other elements of the adjusting device, depending on their function, if necessary, rotationally fixed to the

Drive spindle be attached, for example by

Positive locking, wherein known means such as the interaction of grooves with correspondingly shaped noses or

Feathers (see DIN 6885, ASME B17.1), or splines (see ISO 14, SAE J499, ANSI B92.1, B92.2) with correspondingly shaped spline profiles on the other elements, are advantageously used.

Furthermore, it also includes, for example

Regulating devices in which each guide member has a seated on a threaded spindle designed as a drive spindle spindle nut, wherein the drive spindle has different sections with threads of different thread pitch and the spindle nuts has a respective portion of the drive spindle corresponding thread having the same pitch as the associated threaded portion. By adapted for each spindle nut different thread pitches, the desired effect is achieved with such adjusting device. Also as inventive adjusting devices as shown in Fig. 2 are shown schematically, in which the guide members with hinge points of a

Scissors mechanism are connected, the move evenly when moving the scissor mechanism towards or away from each other.

In one embodiment of the invention it is provided that the adjusting device at least one drive spindle and with the at least one drive spindle and the

Guides cooperating threaded sleeves.

For example, the drive spindle through to the

Guiding organs or their brackets fastened

Threaded sleeves are guided through. On the drive spindle, for example, between each two guide members may each be arranged a threaded sleeve, which in the operation of

Adjusting device rotates with the drive spindle. Assign now the two threaded sleeves of the adjacent guide elements on opposite threads, and has the at the

Drive spindle attached threaded sleeve on two sections with opposing threads, which cooperate with one of the two threaded sleeves of the two guide members, so that the relative distance w of the two guide members is increased or decreased depending on the direction of rotation of the drive spindle. An embodiment thereof is shown in Fig. 3.

It can further be provided that the threaded sleeves are rotatably mounted on the guide members and on the

Drive spindle against rotation and slidably mounted.

According to a further embodiment, it is provided that two drive spindles are arranged parallel to each other, wherein a first drive spindle is operatively connected to all management bodies with odd count index k and a second Drive spindle with all management organs with straight

Count index k is operatively connected.

It can further be provided that each two adjacent guide members are operatively connected to each other by a respective threaded sleeve. An embodiment thereof is shown in Fig. 4.

In the previous description has always been

assumed that each of the operatively connected with the adjusting device management bodies in the operation of the

Adjusting device is moved along the arrangement line. However, such are also included in the invention

Embodiments in which a guide member is immovable and all other guide members move relative to this fixedly arranged guide member. Therefore, it is provided in a further embodiment that a zeroth guide member (k = 0) is fixed and all other management bodies (k> 0) in the operation of the

Adjustment device are moved to the zeroth guide member to or from the zeroth guide member away. For example, on a folder gluer, the beginning or the end of a forming line which runs along the transport path of the folding box blanks to be formed is fixed, i. should be unchanging. In this case, it makes sense if a guide member is immovably arranged at this beginning or end of the forming section.

In a further embodiment, it is provided that

at least two groups of governing bodies along

arranged the same arrangement line and are operatively connected to the same proportionally acting adjusting device. This makes it possible, on the one hand, to simultaneously adjust two or more groups of management bodies, which reduces the construction costs. On the other hand, different configuration changes can be made with one and the same adjustment device, for example when two groups of management bodies have to be adjusted, but the change in the relative distances of neighboring management elements to one another in the groups

should be different.

In this case, it can further be provided that, during operation of the adjusting device, the distances between each two adjacent guiding members of a first group are increased and

at the same time the distances of each two adjacent

Executive bodies of a second group are downsized.

For example, it may be desirable for a specific forming step to be carried out first on a specific section of the transport path of the folding box blanks to be formed, followed by the

Faltschachtelzuschnitt only on the

Transport device held and so until the end of

Transport path is moved. Depending on the size of the carton blank, the length of the carton blank may vary

Forming step required subsection of the transport path vary.

Due to the described embodiment, in which increases the distances of each two adjacent guide members of a first group and at the same time the distances of each two

It is possible to reduce the section required for the forming step and the subsequent section on which the folding box blank is cut only on the

Transport device is kept to mutually adapt so that the sum of both sections is kept constant. If, for example, the first subsection is lengthened by enlarging the distances between the guide elements involved in the reshaping, it becomes at the same time the second section shortened by the fact that the distances of the Faltschachtelzuschnitt holding only on the conveyor guide members

be reduced, whereby the section formed by the sum of the two sections of the transport path remains the same length.

The folding station described is with great advantage in known Faltschachtelklebemaschinen with a

Transport device for folding carton blanks usable. It can also be applied to existing ones

Faltschachtelklebemaschinen be retrofitted with relatively little effort.

The invention is based on

Embodiments and associated drawings explained in more detail. Show

Fig. 1 is a proportional adjusting device with

Driven by various translations,

2 a proportional adjusting device with a scissor mechanism, FIG. 3 a proportional adjusting device with first threaded sleeves mounted in a rotationally fixed manner on the guide elements and a plurality of second threaded sleeves axially displaceable and rotationally fixed on a drive spindle;

4 shows a proportional adjusting device with rotatably mounted on the guide members threaded sleeves which are arranged alternately axially displaceable on one of two drive spindles and rotationally fixed and cooperate with a thread of an adjacent guide member,

5A, 5B and 5C, a first embodiment of

Adjusting device according to FIG. 4 in perspective

Views and in longitudinal section, 6A, 6B and 6C, a second embodiment of the adjusting device of FIG. 4 in perspective

Views and in longitudinal section, and

7A, 7B, 7C and 7D is a partial view of a

Folding box gluer with folding stations according to the

Figures 5A, 5B and 5C and 6A, 6B and 6C for two

different configurations each in one

perspective view and a top view.

In Fig. 1, an adjusting device 4 is schematic

shown, which has for each guide member 2 acting on this guide member 2 gear 44, each of these gear 44 has a different translation and all gear 44 with a common

Drive means 41 such as a motor, a hand crank or the like directly or for example via one or more drive spindles 42 or the like, the

at the same time represent the arrangement line 3 of the management bodies 2, is operatively connected. The guide members 2, here schematically as rollers 21 with roller holders 22nd

are shown are slidably mounted on a rack 45, which acts on each of the drive spindle 42 driven gear 44 and so shifts each guide member 2 by an adjustment whose length is proportional to the counting index k of the respective guide member, so that the distance changes Aw same are big. By adapted for each gear 44 translations of

desired effect achieved.

In Fig. 2, an adjusting device 4 is schematic

represented, in which the guide members 2 are connected to hinge points 47 of a scissors mechanism 46, which, upon actuation of the scissor mechanism 46, for example by the action of a parallel to the arrangement line 3 of

Guiding elements 2 acting force F, move evenly towards or away from each other. The arrangement line 3 of the Guide members 2 is represented in FIG. 2 by a slide rail 48, on which the guide members 2 are arranged displaceably. Through the operation of the

Scissors mechanism 46 is achieved the desired effect that the distance changes Aw of all pairs of adjacent guide members 2 are equal.

In Fig. 3, an adjusting device 4 is schematic

shown, in which the drive spindle 42 is guided by attached to the brackets 23 of the guide members 2 threaded sleeves 43 therethrough. The guide members 2 have attached to the brackets 23, fixed threaded sleeves 43 which the respective adjacent guide member. 2

are facing. The two standing on each other

Threaded sleeves 43 of two adjacent guide members 2 have opposite external thread.

On the extending through the threaded sleeves 43 of the guide members 2 drive spindle 42, which at the same time

Arrangement line 3 of the guide members 2 represents, are rotationally secured and axially displaceable again each a threaded sleeve 43 per distance w between two adjacent

Guide members 2 are arranged, which are in engagement with the external threads of the threaded sleeves 43 of the guide members 2 and rotate during operation of the adjusting device 4 with the drive spindle 42. These threaded sleeves 43 each have two sections, which - according to the external threads of the mutually extended thread of the threaded sleeves 43 of the guide members 2 -gegenläufige internal thread.

The arranged on the drive spindle 42 threaded sleeve 43 acts with the two threaded sleeves 43 of the two

adjacent guide members 2 together, whereby the relative distance w of the two guide members 2 depending on the

Direction of rotation of the drive spindle 42 is increased or

is reduced. If the drive spindle 42 is rotated, so are arranged by each on the drive spindle 42 Threaded sleeve 43, the two in engagement therewith

Threaded sleeves 43 of the adjacent guide members 2 attracted or released depending on the direction of rotation, so that the distance w between the adjacent guide members 2 is reduced or increased.

4, an adjusting device 4 is schematic

shown, in which each two adjacent guide members 2 are operatively connected to each other by a respective threaded sleeve 43. The guide members 2 in this case have on the holder 23 rotatably arranged threaded sleeves 43, which face the respectively adjacent guide member 2. These

Threaded sleeves 43 have an external thread. The

Threaded sleeves 43 of all guide members 2 with an odd count index k are arranged in a first line and the threaded sleeves 43 of all guide members 2 with a straight counting index k are arranged in a second line.

The brackets 23 of the guide members 2, the

Guide members 2 are adjacent to the brackets 23, a threaded sleeve 43 is disposed, have an internal thread into which the external thread of the threaded sleeve 43 engages. In the first line and in the second line each have a drive spindle 42 through each there

arranged threaded sleeves 43 which are secured against rotation and arranged axially displaceable. Both

Drive spindles 42 are driven uniformly by a common motor 41, wherein a drive spindle 42 is connected directly to the motor 41 and the two

Drive spindles 42 are operatively connected to each other by a belt transmission 49. If the drive spindles 42 are rotated, the threaded bushes 43 arranged on the drive spindles 42 engage them

adjacent brackets 23 of the guide members 2 attracted or released depending on the direction of rotation, so that the distance w between the adjacent guide members 2 decreases or enlarged.

In the figures 5A, 5B and 5C and 6A, 6B and 6C concrete embodiments of adjusting devices 4 are shown, the component of each folding station 1 for forming folding carton blanks in one

Faltschachtelklebemaschine are, as shown by way of example in Figures 7A, 7B, 7C and 7D.

Both adjusting devices according to FIGS. 5A, 5B and 5C as well as according to FIGS. 6A, 6B and 6C each serve to fold a lateral flap of a folding box blank from a vertical orientation so that it finally aligns horizontally and thus with respect to the rest of the blank 180 ° folded. For this purpose, the two adjusting device according to FIGS. 5A, 5B and 5C or according to FIGS. 6A, 6B and 6C are expediently to be formed on one side of the transport path for each

Faltschachtelzuschnitte a Faltschachtelklebemaschine attached, as will be explained in more detail with reference to FIGS. 7A to 7D. Each guide member 2 comprises a roller 21 rotatably mounted on a two-piece roller holder 22. In this case, the roller 21 is pivotable relative to the roller holder 22 about a horizontal axis. Besides, the two are

Links 22A, 22B of the roller holder 22 hinged together, so that the one member 22A is pivotable relative to the other member 22B about a horizontal axis. In addition, the articulated connection between both members 22A, 22B is variable, i. the free length of the pivotable member 22A is adjustable. Each two-piece roll holder 22 is at one

attached plate-shaped bracket 23. The brackets 23 of all guide members 2 are arranged along an arrangement line 3 at intervals from one another. Each bracket 23 has a pair of holes. Two rotatably mounted drive spindles 42, which are designed as splines, extend through each pair of holes of all brackets 23. Both drive spindles 42 are connected by a belt drive 49 with a common

Drive means 41 connected in the form of an electric motor so that they rotate synchronously when the

Electric motor 41 is operated.

The holders 23 have, in each case alternately in one of the two holes of the hole pair, a rotatably mounted on the respective holder 23 threaded sleeve 43. The threaded sleeves 43 have in their interior in each case one with the outer contour of the drive spindles 42 corresponding spline hub profile, so that the threaded sleeves 43 are secured against rotation on the drive spindles 42, but in the axial direction of the drive spindles 42 can slide on it. At their free ends, the threaded sleeves 43 are provided with an external thread, which in a

corresponding internal thread in the associated bore of the holder 23 of the adjacent guide member second

engages.

If the drive spindles 42 are rotated, depending on the direction of rotation of the drive spindles 42, either the external threads of the threaded sleeves 43 rotate into the internal threads of the bores of the holders 23 of the adjacent guide members 2 or the external threads of the rotates

Threaded sleeves 43 out of the internal threads of the holes of the brackets 23 of the adjacent guide members 2, wherein the distance of the adjacent brackets 23 - and thus the adjacent guide members 2 total - reduced or enlarged. This shift of

Mounts 23 - and thus the adjacent guide members 2 in total - along the arrangement line 3 is made possible by the fact that the mating of the spline profiles of Drive spindles 42 with the spline profiles of the threaded sleeves 43 seated thereon allows axial displacement of the threaded sleeves 43, while a relative rotation between the threaded sleeves 43 and the drive spindle 42 by the mating of the splines of the drive spindles 42 with the splines of the seated thereon

Threaded sleeves 43 is prevented.

In the adjusting device according to FIGS. 5A, 5B and 5C, the threaded sleeve 43 belonging to the first guide member 2 engages with its external thread in a threaded hole arranged fixedly at the beginning of the arrangement of guide members 2, so that the first guide member moves its distance relative to this stationary threaded bore changes. In the selected representation, this first guide member 2 is located within the arrangement on the far right.

Considering a movement of the adjusting device 4, in which the drive spindles 42 move the threaded sleeves 43 in such a way that their external threads screw into the internal threads of the bores of the holders 23 of the adjacent guide elements 2, the following is stated:

The fact that in the manner described, the first

Guide member 2 (count index k = l) uses a path s to the stationary threaded hole, the adjacent second guide member 2 (k = 2) by a distance s to the first

Guide body 2 (k = l) draws, etc., it follows for each guide member 2 a summary adjustment, which corresponds to k times s. Analogously, this applies to the

reverse movement, in which the summary

Proportionally increase the adjustment paths of all management bodies 2. In the adjusting device according to Figures 6A, 6B and 6C is at the beginning of the arrangement of management institutions a

stationary zeroth guide member 2 (k = 0) is arranged, which does not change its position. In the chosen presentation This zeroth executive 2 is on the far right. Its threaded sleeve 43 engages with its external thread in the corresponding threaded bore of the first, that is, the first movable, guide member 2, which is therefore moved relative to the zeroth guide member 2 during operation of the adjusting device 4.

Starting from the zeroth management body 2 include the

Leaders 2 with the indexes k = 1 ... 4 to a first group of governing bodies 2, which are in the operation of

Adjusting device 4 move in the same direction, i. are moved to the zeroth guide member 2 to or from the zeroth guide member away. The subsequent second group of governing bodies with the counting indices k = 5 ... 8 also move in the same direction, but always opposite to the governing bodies 2 of the first group (k = 1 ... 4). This is achieved in that the threaded sleeves 43 of the second group (k = 5 ... 8) are arranged opposite to the threaded sleeves 43 of the first group (k = 1 ... 4).

Considering a movement of the adjusting device 4, in which the drive spindles 42, the threaded sleeves 43 of the first group (k = 1 ... 4) move so that their

External thread in the internal thread of the holes

Screw holders 23 of each adjacent guide members 2, so reduce the distances between the guide members 2 of the first group (k = 1 ... 4). At the same time, the external threads of the threaded sleeves 43 of the second group (k = 5... 8) rotate out of the associated internal threads of the adjacent guide elements, so that the distances between the guide members 2 of the second group (k = 5. out. For each of the two groups of

Governing bodies applies that the distances w between each two adjacent management bodies 2 of the considered group of management bodies 2 along the line 3 arrangement

evenly changes. FIGS. 7A, 7B, 7C and 7D show by way of example how the adjusting devices according to FIGS. 5A, 5B and 5C as well as 6A, 6B and 6C are arranged as components of folding stations in a folding box gluing machine. 7A and 7B show the folding box gluing machine in a first setting for a particular folding box blank in a perspective view and a top view; and FIGS. 7C and 7D show a perspective view and a top view of the folding box gluer in a second setting for another folding box blank.

For this purpose, the two folding stations 1 are arranged on each side of the transport path 51 folding carton blanks to be formed on the frame 5 of the folding carton machine so that their relative distance from each other for adaptation

different sizes of folding carton blanks can be set.

Each folding station 1 comprises a base plate 13 with an arrangement of lower support rollers 11, on which the

Faltschachtelzuschnitt lying coming from the right

is transported. About the lower support rollers 11, a conveyor belt 12 is guided to a uniform and slip-free transport of Faltschachtelzuschnitte

ensure.

Furthermore, each folding station 1 on a Pflugfalzschiene 24, which is the transformation of a tab of the

Faltschachtelzuschnitts from the horizontal into the

vertical alignment, i. around the first 90 °, causes. The Pflugfalzschiene 24 is respectively upstream of the adjusting device 4 with the guide members 2. The to the

Plow folding rail 24 subsequent arrangement of rollers 21 serves to further reshape the tab of

Faltschachtelzuschnitts from the vertical into the

horizontal orientation, ie around the second 90 °. Both the Pflugfalzschiene 24 and the subsequent arrangement of Rollers 21 serve to guide a folding belt 25, which in direct contact with the reshaping

Folding carton blank stands while this one through the

Folding stations 1 passes through and is thereby folded. The illustrated folder gluer is for

Performing a left-to-right folding of two tabs of a carton blank, i. of the

Folding operation for the left tab starts first.

On the left side of the transport path 51 is a

Folding station 1 arranged, which is an arrangement of two

Group of rollers 21, as shown in Figs. 6A, 6B and 6C. At this folding station 1, the point of the transport path 51, at which the first section of the forming is completed with a folding by 90 °, fix. This point is fixed by the end of the

Plow folding rail 24 defined. In contrast, however, the point of the transport path 51 is adjustable, at which the folding is completed with 180 °. This point is defined by the position of the fourth roller 21. The transport of Faltschachtelzuschnitt takes place initially along the Pflugfalzschiene 24 (0 ... 90 ⁰ ), and then along the arrangement of the guide members 2 in the reverse

Order of their counting index i. the second section of the deformation (90 ... 180 °) is performed by the guide members 2 with k = 8 to k = 5 and is on the guide member 2 with k = 4

completed. The guide members with k = 4 to k = 0 hold the tab in the horizontal position at 180 °.

As seen in the transport direction behind the zeroth roller 21, two fixed rollers are again arranged, on which the adjusting device does not act and which define the end of the transport path 51.

On the right side of the transport path 51 is a Folding station 1 is arranged, which has an arrangement of a group of rollers 21, as shown in Figs. 5A, 5B and 5C. At this folding station 1, the point of the transport path 51, at which the first section of the forming is completed with a folding by 90 °, adjustable by the Pflugfalzschiene 24 along the transport path is displaceable and fixable at the desired position. This point is crossed by the end of the movable

Plow folding rail 24 defined. As seen on the left side are on the right side in the transport direction behind the first roller 21 again two fixed rollers arranged on the

Adjustment device does not act. The end of the

Transport path 51 is defined by the position of these two fixed rollers 21. The point of

Transport path 51, at which the folding is completed by 180 °, is the position of the first roller 21, which is arranged immediately in front of the two fixed rollers 21.

The transport of Faltschachtelzuschnitt takes place initially along the Pflugfalzschiene 24 (0 ... 90 ⁰ ), and then along the arrangement of the guide members 2 in the reverse

Order of their counting index i. the second section of the deformation (90 ... 180 °) is performed by the guide members 2 with k = 5 to k = 2 and is on the guide member 2 with k = l

completed. The guide element with k = l holds the tab in the horizontal position at 180 °. Folding station and folder gluer

LIST OF REFERENCE NUMBERS

1 folding station

11 lower support roller

12 transport belts

13 base plate

2 management body

21 roll

22 roll holders

23 bracket

24 plow rebate rail

25 folding belts

3 arrangement line

4 adjusting device

41 Drive device, engine

42 drive spindle

43 threaded sleeve

44 gearbox

45 rack

46 scissors mechanism

47 pivot point

48 slide rail

49 belt transmissions

5 frame

51 Transport path

k counting index

s adjustment path

Aw distance change

Claims

Folding station and folding box gluing machine patent claims

Folding station (1) for forming flat workpieces, comprising at least one group of k guide elements (2) which run along an arrangement line (3).

are attached to each other at a variable distance w, characterized in that the guide members (2) have a common, proportionally acting

Adjusting device (4) is operatively connected, which during operation determines the distances w between two adjacent guide elements (2) of the group of guide elements

(2) along the arrangement line

(3) changes evenly.

Folding station according to claim 1, characterized in that the adjusting device

(4) at least one

Drive spindle (42) and threaded sleeves (43) which interact with the at least one drive spindle (42) and the guide members (2).

Folding station according to claim 2, characterized in that the threaded sleeves (43) are rotatably attached to the guide members (2) and are secured against rotation and displaceable on the drive spindle (42).

Folding station according to claim 2 or 3, characterized

characterized in that two drive spindles (42) are arranged parallel to one another, a first drive spindle (42) being operatively connected to all guide elements (2) with an odd counting index k and a second drive spindle (42) being operatively connected to all guide elements (42) with an even counting index k is.

5. Folding station according to one of the preceding claims, characterized in that two adjacent

Management organs (42) with each other by one

Threaded sleeve (43) are operatively connected.

6. Folding station according to one of the preceding claims, characterized in that a zeroth guide element

(2) (k=0) is fixed and all others

Management bodies (2) (k>0) during operation of the

Adjusting device (4) to the zeroth guide element

(2) can be moved to or away from the zeroth guide element (2).

7. Folding station according to one of the preceding claims, characterized in that at least two groups of guide members (2) along the same

Arrangement line (3) arranged and with the same proportionally acting adjusting device (4)

are effectively connected.

8. Folding station according to claim 7, characterized in that during operation of the adjusting device (4).

Distances between two adjacent guide elements (2) of a first group are increased and at the same time the distances between two adjacent guide elements (2) of a second group are reduced.

9. Folder gluing machine with one

Transport device for folding box blanks and at least one folding station according to one of claims 1 to 8.