DE19655385B4 - Pleating of continuous esp. filter material - has crease line embossed in flat material which is then folded into heater by reciprocating roller pairs - Google Patents

Abstract

Continuous flat material (1) is pleated by first producing a concave or convex crease in an embossing unit (2) with an upper and lower punch (3,4). The embossed material is then taken by a pair of guide rollers (8,9), which move according to the pleat height, towards a second roller pair (12,13) which forms the pleats and erects them in a transport unit (16). The pleated material is pressed against a hot plate (20). The movements of the punch, roller pairs and transport unit as well as the temperature of the hot plate are controlled electronically.

Description

The The invention relates to a method and an apparatus for the production of folded surface webs.

in the State of the art, various folding machines are known.

The DE 1 761 340 A discloses a folding machine having a profiled roller pair as embossing unit for pre-embossing a surface sheet. After an embossing unit, a Aufstellwalzenpaar is provided, which sets up the surface sheet in folds, wherein the kinks arise at the pre-stamped positions. The Aufstellwalzenpaar also pushes the folded surface sheet in a braking device, which is followed by a heating table.

The patent US 2,815,205 A discloses a folding machine with an embossing unit having an upper die and a lower die. Before the embossing unit, a pair of rollers is provided to supply a surface sheet of the embossing unit.

Finally, out of the EP 0 640 549 A1 a folding machine for zig-zag folding a sheet known, which has four pairs of rollers and movable guide plates. When folding a sheet, two pairs of rolls are driven in reversing directions.

Of the Invention is based on the object, a method and an apparatus offer, with which it is easily possible to produce alternating levels of wrinkles.

These The object is achieved by a method according to claim 1 and by a device according to claim 4 solved.

The Movement of the dies over Curved, eccentric, spindle or linear drive or via hydraulic or pneumatic working cylinder. By separating the impression and the Transport movement of the rollers, it is possible via an electronic control to achieve a regulation of the transport and the fold height. Due to the controlled control and the resulting minimum deviation from the target value, the production of reject is due to incorrect pleat height practically impossible. The heating tables are located far outside of the workspace and can Therefore, do not thermally influence the process.

The Method of folding is reproducible at any time, that is, Once a program has been run, it is stored in the controller and stands for repeat business to disposal. The usual elaborate Setting the folding machine is eliminated. The stamping are adjusted in the factory and can then by the operator by Software on a material-dependent embossing depth be programmed. The operator is solely responsible for feeding the material, because all other processes run automatically. This is one Operator of the device will be able to use two or more machines serve. Especially in areas where filters for ultrafine filtering be manufactured, for example, blood filter or cabin filter for chip production, The filter material must not be contaminated during manufacture. Due to the virtually fully automatic operation of the inventive device Is it possible, the machine over to control a control panel so that the surface panels and the device can be separated from the outside world by disguise and thereby no contamination can be carried into it.

Further Details and features of the invention will become apparent from the dependent claims and the description below, in more detail in the drawing illustrated embodiments.

1 shows a Filterfaltvorrichtung with continuous surface web, and

2 shows Filterfaltvorrichtung with vertically arranged Aufstelleinheit.

From a surface roll 7 goes through a surface track 1 the device according to 1 , The surface track 1 first enters a stamping unit 2 one. Here is done by an alternating upward and downward movement of an upper die 3 and a lower die 4 a concave and convex pre-embossing of the surface web at the bottom and top. An upper punch guide 26 and a lower punch guide 27 ensure the linear vertical movement of the upper die 3 and the lower die 4 and the corresponding embossing on embossing. The vertical movement of the upper and lower stamping dies 3 and 4 is by an upper punch drive 5 and a lower punch drive 6 causes. An upper guide roller arranged thereafter 8th and a lower guide roller 9 generates the required transport speed of the surface web 1 ,

The generation of the opposite rotational movement of the upper guide roller 8th and the lower guide roller 9 takes place with an upper guide roller drive 10 and a lower guide roller drive 11 , The upper guide roller drive 10 at the same time allows a vertical up and down movement of the guide roller 8th ,

In the direction of the continuous surface web 1 seen, this is followed by a dancer wave 24 arranged. The dancer wave 24 keeps the surface web in a certain tension and thus compensates for different speeds when transporting the surface web 1 out.

This is followed by the surface web 1 a setup unit 28 , The erection unit 28 consists of an upper set-up roller 12 and a lower set-up roller 13 , which have an upper Aufstellwalzenantrieb 14 and a lower Aufstellwalzenantrieb 15 can be offset in opposite rotation and in vertical up and down movements. Due to the vertical up and down movement of the erection unit, the placement of the folds and the pressing in of the folded surface web takes place 1 in a transport unit 16 , The transport unit 16 consists of an upper transport roller pair 17 and a lower transport roller pair 18 on the pleated heads 23 exert a pressing force, so that a compaction of the folds already in the transport unit 16 he follows. The rotational movement and the vertical movement of the transport unit 16 via a transport roller drive 19 , The folded and compressed surface web 1 is from the transport unit 16 coming into a heating table 20 pushed.

Over the upper fold guide 21 and the lower wrinkle guide 22 of the heating table 20 Heat energy is directed to the pleat heads, creating a pleating effect.

Via an electronic control unit 25 all drives of the device according to the invention are regulated or controlled. With uniform transport speed of the surface web 1 The fold height is determined by the size of the transport speed. This is done via the upper guide roller drive 10 and the lower guide drive 11 , At the same time, the upper set-up roller drive is used 14 and the lower Aufstellwalzenantrieb 15 the vertical movement of the positioning unit required by the corresponding fold height 28 causes.

Alternating levels of wrinkles can be achieved using the upper and lower punch drives 5 and 6 or via the change in the transport speed of the surface webs can be achieved. The thus required alternating vertical movement of the erection unit 28 is via the electronic control unit 25 regulated.

In the 2 shown filter folding device shows a vertical position of the erector 28 that makes it possible to use the surface track 1 folded in the vertical direction, so that virtually any technically reasonable fold height (distance between the opposing pleat heads 23 ) can be realized.

1

surface train

2

embossing unit

3

upper dies

4

lower dies

5

upper punch drive

5a

lower punch drive

7

Surface web roll

8th

upper guide roller

9

lower guide roller

10

upper Guide roller drive

11

lower Guide roller drive

12

upper Aufstellwalze

13

lower Aufstellwalze

14

upper Aufstellwalzenantrieb

15

lower Aufstellwalzenantrieb

16

transport unit

17

upper Transport roller pair

18

lower Transport roller pair

19

Transport roller drive

20

hot table

21

upper folding guide

22

lower folding guide

23

folding head

24

dancers wave

25

electronic control unit

26

upper punch guide

27

lower punch guide

28

Aufstelleinheit

Claims (6)

Method for the production of folded surface webs, wherein on one by an embossing unit ( 2 ) guided surface sheet ( 1 ) concave and convex knockouts are introduced, wherein the pre-embossed surface web ( 1 ) then in the direction of an erection unit ( 28 ), which is an upper set-up roller ( 12 ) and a lower set-up roller ( 13 ), which is the preparation of the folds and their introduction into a transport unit ( 16 ), and from which the folded surface web ( 1 ) in a heating table ( 20 ), and wherein the embossing movement, the movement of the rollers and the transport unit and the temperature of the heating table are controlled by an electronic control, wherein the deployment rollers ( 12 . 13 ) by an upper Aufstellwalzenantrieb ( 14 ) and a lower Aufstellwalzenantrieb ( 15 ) in contra-rotating rotation as well as simultaneously and together in vertical up and down movements, to the establishment of the folds and the pushing in of the folded surface web ( 1 ) in the transport unit ( 16 ) too cause. Method according to claim 1, characterized in that in the transport unit ( 16 ) by adjusting the distance of an upper pair of transport rollers ( 17 ) and a lower transport roller pair ( 18 ) and by selecting the distance of an upper fold guide ( 21 ) and a lower fold guide ( 22 ) of the heating table ( 20 ) A pressing pressure is generated. A method according to claim 1 or 2, characterized in that by setting an alternating transport speed of the surface web ( 1 ) an alternating wrinkle height is generated. Device for producing folded surface webs, comprising - an embossing unit ( 2 ), in front of which a surface web roll ( 7 ) with developable surface web ( 1 ), - an erection unit ( 28 ) with an upper set-up roller ( 12 ) and a lower set-up roller ( 13 ), - a subsequent transport unit ( 16 ) with an upper transport roller pair ( 17 ) and a lower transport roller pair ( 18 ) for receiving the folded surface web and - a heating table ( 20 ) with upper and lower fold guide ( 21 . 22 ) for pleating the folded surface web ( 1 ), wherein the erection rollers ( 12 . 13 ) by an upper Aufstellwalzenantrieb ( 14 ) and a lower Aufstellwalzenantrieb ( 15 ) are displaceable in opposite rotation as well as simultaneously and jointly in vertical up and down movements, in order to set up the folds and push in the folded surface web (FIG. 1 ) in the transport unit ( 16 ) to effect. Apparatus according to claim 4, characterized in that the drives with an electronic control unit ( 25 ) are connected. Apparatus according to claim 4 or 5, characterized in that between an upper and lower guide roller ( 8th . 9 ) and the upper and lower setting roller ( 12 . 13 ) a dancer wave ( 24 ) is arranged.