DE102017122760A1 - Apparatus for processing web-shaped materials in the passage by means of a pair of rollers - Google Patents

Abstract

The invention relates to a device for processing web-like materials in the passage by means of a pair of rollers, comprising a top roller (10, 110) with a mounted on a top roller axle upper roller gear (12, 112), a bottom roller (14, 114) with one on a lower roller shaft mounted sub-roller gear (16, 116) and with means for supplying the upper (10, 110) and / or the lower roller (14, 114), wherein the upper roller and the lower roller gear (12, 112, 16, 116) are designed such in that they are engaged during the processing of the sheet material. To provide such a device which does not require expensive hydraulic systems for moving the rollers is achieved in that the top roller (10, 110) on a short lever arm of a two-sided upper lever (18, 118) is mounted, that the upper lever (18, 118) in its pivot point is held on a machine frame and that acts on a long lever arm of the two-sided upper lever (18, 118) an actuating device for moving the upper lever (18, 118) and / or that the lower roller on a short lever arm of a two-sided sub-lever (20, 120 ) is mounted, that the lower lever (20, 120) is held in its fulcrum on a machine frame and that acts on a long lever arm of the two-sided lower lever (20, 120) an actuating device for moving the lower lever (20, 120).

Description

The present invention relates to a device for processing web-like materials in the passage by means of a pair of rollers according to the preamble of claim 1.

There are many ways to process web-shaped materials in a single pass, for example printing on paper, metal foil or plastic webs, embossing paper, cardboard, textile, plastic, foil or metal webs, perforating paper , Cardboard, textile, foil or metal sheets and so on. Calendering is one of them too. Material webs are passed between two rollers. In particular, when embossing a roller is referred to as a die and the other as a male.

From the DE 103 12 323 A1 For example, an embossing calender is known in which a toothed wheel is mounted both on the axis of the die and on the axis of the male part, which mesh with one another during the processing of the web-like materials in order to ensure a synchronous movement of the rolls. To clean the embossing calender, to insert a new web and / or to adjust the gap between the die and the male part, it is necessary to be able to move one roller relative to the other roller. This is done via appropriate hydraulic devices.

Now, if the one roller moved away from the other roller, the gears get out of engagement with the consequence that during the subsequent bringing one roller to the other this engagement of the gears must be restored consuming, it should be noted that the rollers in the correct position for processing the web-shaped materials. For this purpose, very complex and therefore expensive special solutions are used.

Because the rollers are usually very heavy, the hydraulic devices must be correspondingly powerful and are therefore very cost and maintenance intensive.

Based on this, the present invention seeks to provide a device for processing web-like materials in the passage of the aforementioned type, which manages without complex hydraulic systems for moving the rollers.

As a technical solution to this problem, a device of the type mentioned is proposed according to the invention with the features of claim 1. Advantageous developments of this device can be found in the dependent claims.

A trained according to this technical teaching apparatus for processing web-like materials in the flow has the advantage that in this way, taking advantage of the physical leverage laws, a comparatively small actuator can be used to move the upper roll and / or the lower roll. In principle, it would be sufficient if either the top roller or the bottom roller is held on a corresponding upper lever / lower lever and the other roller, as known from the prior art, is held on the machine frame.

In an advantageous embodiment, both the top roller is held on an upper lever and the lower roller on a lower lever. This gives the user the freedom to move one or the other roller depending on the application situation. It is also possible to move both rollers simultaneously with the advantage that each roller has a smaller path to go back. Yet another advantage is that the roller pressure to be applied to the web to be processed can be transmitted simultaneously to both rollers via the levers, which reduces the forces occurring at each roller and thus less stresses the entire device (in particular the machine frame).

In an advantageous development, the upper lever is angled upwards and the lower lever is angled downwards. This has the advantage that between the now clearly spaced long lever arms of the upper and lower lever space for an actuator is created and the upper lever with its long lever arm still down and the lower lever with its long lever arm can still be moved up.

In a preferred embodiment, the actuator operates on the toggle lever principle. In this case, the actuating device comprises an electric drive acting on a spindle which sets the spindle in rotation, a spindle nut which moves axially in the direction of the spindle via the spindle and the electric drive, and a top lever connecting element held rotatably on the spindle nut and having a free end of the spindle long lever of the upper lever is rotatably connected and a rotatably held on the spindle nut Unterhebelverbindungselement which is rotatably connected to the free end of the long lever arm of the lower lever.

This has the advantage that the spindle is set in rotation with an electric drive and the spindle nut is axially moved forwards or backwards can, with the upper lever and the lower lever are moved equally up or down. By such a division of forces, a relatively weak electric drive can move the comparatively heavy upper roller and the comparatively heavy lower roller accordingly.

Moreover, it is possible with such operating according to the kink-lever principle actuator to keep the gap between the upper roller and the lower roller during operation of the apparatus for processing web-like materials in the flow constant, especially if, for example, when embossing or perforating a considerable working pressure on the rollers.

In a very different preferred embodiment, a Oberhebeldrehpunktachse is provided at the pivot point of the upper lever on the machine frame, on which the upper lever is pivotally supported. This facilitates the attachment of the top roller and the upper lever on the machine frame while maintaining the pivotability of the upper lever. In a preferred embodiment, the lower lever is held in an analogous manner to the machine frame.

In a preferred embodiment, a Oberheblezahnrad is mounted in particular rotationally rotatable on the Oberhebeldrehpunktachse, the Oberhebelzahnrad at least during the processing of the web-like material with the upper roller gear is engaged. In an advantageous development, a corresponding lower lever gear wheel is also provided on the lower lever pivot axis, which is in engagement with the lower roller gear.

In a most preferred embodiment, the apparatus for processing web-like materials comprises in passing a top roll held on a top lever, an upper roller gear and a top lever gear, and a lower roller held on a lower lever with a lower roller gear and a lower lever gear. In this embodiment, all four gears are engaged during processing of the sheet material. At the same time, the four gears are so designed that the lower lever gear is permanently engaged with the lower roller gear and the upper lever gear, while the upper lever gear is permanently engaged with the lower lever gear and the upper roller gear.

Such a four-gear arrangement has the advantage that the position of the top roller relative to the position of the bottom roller is defined at all times. That is, even when moving the upper roller away from the lower roller, so when opening the rollers, the four gears are in the above-mentioned engagement situation, so when approaching the upper roller to the lower roller whose position is still determined exactly. Thus, the rolls can be easily opened even when embossing or perforating, for example, to insert a new material web, and always remain in the exact, predetermined position with the advantage that after closing the two rolls production can be continued immediately. Also, an expensive special solution for adjusting the rollers is unnecessary.

In another preferred embodiment, the upper lever is held eccentrically on the Oberhebeldrehpunktachse. This has the advantage that in this way the fine adjustment of the position of the upper lever and thus the position of the upper lever in relation to the lower lever or the position of the Oberhebelzahnrades in relation to the position of the lower lever gear can be adjusted. Another advantage is that any inaccuracies or material in the game here can be compensated very precisely.

In an advantageous development, the lower lever is held in an analogous manner eccentrically to the lower lever fulcrum axis, so that a fine adjustment is also possible here.

In another preferred embodiment, a bearing seat is screwed by means of two screws on the short lever arm of the two-sided upper lever, the screws extend through a slot in the short lever arm through. This makes it possible to adjust the position of the upper roller relative to the Oberhebelzahnrad with the advantage that in this way the engagement of the Oberwalzenzahnrades can be precisely adjusted with the Oberhebelzahnrad.

In an advantageous development of such a slot is also provided in the bearing seat, so there are more adjustment options. In yet another advantageous development, a bearing seat by means of at least two screws is also attached to the short lever arm of the two-sided lower lever, wherein in this bearing seat a slot in the short lever arm and / or a slot in the bearing seat is provided so that the positioning of the lower roller, in particular of the lower roller gear, can be precisely adjusted to the Unterhebelzahnrad.

• 1 eine schematische Darstellung eines Ausschnittes einer ersten Ausführungsform einer erfindungsgemäßen Vorrichtung;
• 2a eine schematische Darstellung eines Ausschnittes einer zweiten Ausführungsform einer erfindungsgemäßen Vorrichtung im geöffneten Zustand;
• 2b die Vorrichtung gemäß 2a im geschlossenen Zustand;
• 3 eine Detailansicht der Vorrichtung gemäß 2a ohne die Oberwalze und ohne das Oberwalzenzahnrad;
• 4 eine schematische Seitenansicht der Vorrichtung gemäß 2a.

Further advantages of the device according to the invention will become apparent from the accompanying drawings and the embodiments described below. Likewise, according to the invention, the above-mentioned features and those which are still further developed can be used individually or in any desired combinations with one another. The mentioned embodiments are not to be understood as an exhaustive list, but rather have exemplary character. Show it:

• 1 a schematic representation of a detail of a first embodiment of a device according to the invention;
• 2a a schematic representation of a section of a second embodiment of a device according to the invention in the open state;
• 2 B the device according to 2a when closed;
• 3 a detailed view of the device according to 2a without the upper roller and without the upper roller gear;
• 4 a schematic side view of the device according to 2a ,

1 shows a first embodiment of the device according to the invention for processing web-like materials in the passage by means of a pair of rollers, comprising a top roller 10 with a superimposed on a here not visible top roller axis 12 , wherein the upper roller gear 12 firmly with the top roller 10 is connected and a lower roller 14 with a lower roller gear wheel mounted on a lower roller axle (not visible here) 16 , whereby also here the Unterwalzenzahnrad 16 firmly with the lower roller 14 connected is.

The apparatus for processing web-shaped materials further comprises a two-sided upper lever 18 , at the short end of the upper roller 10 is held and a two-sided lever 20 , at the short end of the lower roller 14 is held.

Both the two-sided upper lever 18 , as well as the two-sided lower lever 20 are pivotally held in their respective fulcrum on a machine frame, not shown here.

The upper lever 18 is angled upwards and the lower lever 20 is angled down so that there is a space between them for receiving an actuator 22 for moving the upper lever 18 and the sub-lever 20 arises.

In another, not shown embodiment, upper lever and lower lever, and the cooperating components such as actuator, are arranged rotated by 90 °. In this embodiment, then the upper lever is designed to the left and the lower lever to the right angled, so that the actuator can be arranged therebetween.

This actuator 22 includes an electric drive 24 , the one spindle 26 drives, taking on the spindle 26 a spindle nut 28 is arranged. In this case, the electric drive 24 the spindle 26 Turn both right and left with the result that the spindle nut 28 in the axial direction on the spindle 26 can be moved back and forth. At the spindle nut 28 is on the one hand a Oberhebelverbindungselement 30 and on the other a Unterhebelverbindungselement 32 rotatably supported, wherein the upper lever connecting element 30 at a free end of the long lever arm of the upper lever 18 is also held rotatably, while the lower lever connecting element 32 at the free end of the long lever arm of the lower lever 20 is held rotatably.

This entire device for processing web-like materials in the run by means of a pair of rollers according to 1 works on the so-called articulated lever principle, the electric drive 24 the spindle 26 rotated while the spindle nut 28 moved axially outwards, wherein the upper lever connecting element 30 and the lower lever connecting member 32 be moved accordingly and the long arm of the upper lever 18 and the long arm of the lower lever 20 move towards each other, so the top roller 10 and the lower roller 14 be moved away from each other. By utilizing the leverage laws and the articulated lever principle, a relatively small designed electric drive 24 the top roller 10 from the lower roller 14 move away, although the top roller 10 and the lower roller 14 are relatively heavy.

As soon as the electric drive 24 moving in the other direction will also be the spindle 26 turned in the opposite direction, with the spindle nut 28 is returned axially and wherein the upper lever 18 and the lower lever 20 be pushed apart again at its long end, so that the top roller 10 and the lower roller 14 to move towards each other. It is possible, the gap between the top roller 10 and the lower roller 14 set exactly and / or to exert a corresponding contact pressure on the web-shaped material.

Once the top roller 10 and the lower roller 14 are in the desired position, the lower roller 14 over the drive gear 34 set in rotation. Because in this position the upper roller gear 12 with the lower roller gear 16 is engaged, accordingly, the top roller 10 moved.

In the 2a . 2 B . 3 and 4 is a second embodiment of a device according to the invention for processing web-shaped Materials shown in the run by means of a pair of rollers, which are identical to those in 1 described device is, in addition, however, a Oberhebelzahnrad 136 and a lower lever gear 138 having.

The upper lever 118 is rotatable on a Oberhebeldrehpunktachse 140 held, at which also the upper lever gear 136 is held rotatable. The lower lever 120 is rotatable in a similar manner to a lower lever fulcrum axis 142 held, at which also the Unterhebelzahnrad 138 is held rotatable. Both the upper lever pivot axis 140 , as well as sub-pivot axis 142 are mounted in a machine frame not shown here and thus keep the entire device in the desired position.

In this embodiment, a drive gear engages 134 on the lower lever gear 138 and thus drives the top roller 110 and the lower roller 114 at.

In the in the 2a . 2 B . 3 and 4 During the operation of the device for processing web-like materials, all four gear wheels are engaged with one another, in particular in FIG 2a is shown. 2 B shows the device in the open state, wherein between the upper roller 110 and the lower roller 114 there is a clear distance. In this open state is the upper roller gear 112 with the upper lever gear 136 engaged while the upper lever gear 136 with the lower lever gear 138 is engaged and while the Unterhebelzahnrad 138 with the lower roller gear 116 is engaged. This means that even in the open state the position of the top roller 110 and the lower roller 114 is exactly determinable. When merging the top roller 110 and bottom roller 114 these are due to the meshing gears in a well-defined position and in the closed state, as in 2a represented, also attacks the Oberwalzenzahnrad 112 in the lower roller gear 116 a, so now each gear with the two adjacent gears is engaged.

The actuator 122 in the 2a . 2 B . 3 and 4 illustrated second embodiment is identical to the in 1 illustrated actuator 22 so reference is made to the above text to avoid repetition.

3 shows the second embodiment of the device in the open state according to 2 B , but with a disassembled top roller 110 and with a disassembled upper roller gear 112 , This will cause the short end of the upper lever 118 visible and you can see that at the short end of the upper lever 118 a camp seat 144 for receiving the top roller 110 is provided, which by means of two screws not shown here at the short end of the upper lever 118 is attached. The screws penetrate both the free end of the upper lever 118 as well as the camp seat 144 , For this purpose are at the free end of the upper lever 118 corresponding slots 146 provided so that the exact position of the top roller 110 and the upper roller gear 112 opposite the lower roller 114 or the lower roller gear 116 can be moved within certain limits. As a result, an exact adjustment of the top roller 110 opposite the lower roller 114 in a simple way possible.

4 shows the second embodiment from the other angle and it can be seen here that the Oberhebeldrehpunktachse 140 slightly eccentric on an axle carrier 148 is held and that the sub-pivot axis 142 slightly eccentric in an axle carrier 150 is held. This makes it possible either the Oberhebeldrehpunktachse 140 and / or the sub-pivot axis 142 eccentric with the aim of a fine adjustment of the upper lever gear 130 and / or the Unterhebelzahnrades 138 in relation to the other gears. Thus, an accurate adjustment of the individual gears and thus the top roller 110 and the lower roller 114 reached.

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 10312323 A1 [0003]

Claims (10)

Apparatus for processing web-like materials in the passage by means of a roller pair, comprising a top roller (10, 110) with an upper roller gear (12, 112) mounted on a top roller axle, a bottom roller (14, 114) with a bottom roller gear (16, 16) mounted on a bottom roller axle 116) and means for feeding the upper (10, 110) and / or the lower roll (14, 114), wherein the upper roll and lower roll gears (12, 112, 16, 116) are adapted to move during the processing of the sheet-like material are engaged, characterized in that the upper roller (10, 110) on a short lever arm of a two-sided upper lever (18, 118) is mounted, that the upper lever (18, 118) held in its fulcrum on a machine frame is that and on a long lever arm of the two-sided upper lever (18, 118) an actuating device for moving the upper lever (18, 118) engages and / or that the lower roller (14, 114) on a ku Lever arm of a two-sided sub-lever (20, 120) is mounted, that the lower lever (20, 120) is held in its fulcrum on a machine frame and that on a long lever arm of the two-sided sub-lever (20, 120) an actuating device for moving the sub-lever ( 20, 120) attacks. Device after Claim 1 , characterized in that the upper lever (18, 118) in a first direction, in particular upwards, is angled and / or that the lower lever (20, 120) in a second direction, which is opposite to the first direction, in particular downwards , is formed angled. Device according to at least one of the preceding claims, characterized in that the actuating device comprises an electric drive (24), a spindle (26), a spindle nut (28), and an upper lever connecting element (30) of the spindle nut (28) to the free end (16) of Lever arm of the upper lever (), and a Unterhebelverbindungelement (32) of the spindle nut (28) to the free end () of the lever arm of the lower lever (20, 120), wherein the electric drive (24) with the spindle (26) is operatively connected and this rotates, so that the spindle nut (28) in the direction of the spindle axis is moved back and forth. Device after Claim 3 , characterized in that the upper lever connecting member (30) is rotatably mounted at the free end of the lever arm of the upper lever (18, 118) and / or rotatably on the spindle nut (28) and / or that the Unterhebelverbindungselement (32) rotatably mounted at the free end of the lever arm the lower lever (20, 120) and / or rotatably mounted on the spindle nut (28). Device according to at least one of the preceding claims, characterized in that in the fulcrum of the upper lever (18, 118) on the machine frame a Oberhebeldrehpunktachse (140) is provided, on which the upper lever (18, 118) is pivotally supported and / or that in the fulcrum of Sub-lever (20, 120) on the machine frame a sub-pivot axis (142) is provided, on which the lower lever (20, 120) is pivotally supported. Device after Claim 5 , characterized in that on the Oberhebeldrehpunktachse (140) a Oberhebelzahnrad (136) is mounted and that the Oberhebelzahnrad (136) is designed such that it at least during processing of the web material, preferably constantly, with the Oberwalzenzahnrad (12, 112 ) and / or that a Unterhebelzahnrad (138) is mounted on the Unterhebeldrehpunktachse (142) and that the Unterhebelzahnrad (138) is designed such that it at least during the processing of the sheet material, preferably constantly, with the lower roller gear ( 16, 116) is engaged. Device after Claim 6 , characterized in that the upper lever gear (136) is rotatably mounted on the pivot axis () of the upper lever (18, 118) and / or that the Unterhebelzahnrad (138) is rotatably mounted on the pivot axis () of the lower lever (20, 120). Device according to at least one of Claims 6 or 7 characterized in that the upper lever gear (136) is engaged with the lower lever gear (138) at least during processing of the sheet material, preferably constantly. Device according to at least one of the claims, characterized in that the upper lever (18, 118) is held eccentrically on the Oberhebeldrehpunktachse (140) and / or that the lower lever (20, 120) is held eccentrically on the Unterhebeldrehpunktachse (142). Device according to one of the preceding claims, characterized in that on the short lever arm (16) of the two-sided upper lever (18, 118) a bearing seat (144) is screwed by means of at least two screws (16), the screws (14) passing through a slot (146) in the short lever arm (14) and / or a slot in the bearing seat (144) and / or on the short lever arm (12) of the two-sided lower lever (20 , 120) a bearing seat (144) by means of at least two screws () is screwed, wherein the screws () through a slot (146) in the short lever arm () and / or a slot in the bearing seat (144) pass through.

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