DE3730923A1 - Apparatus for the cutting to size and joining together of strip material - Google Patents

Abstract

The apparatus for the cutting to size and joining together of strip material of the rubber-coated cord-fabric type contains a device for the movement and orientation of the cut-off pieces of strip material (14), which has an inclined table and a platform (24), located behind the latter, with a stop for the front edge of the cut-off piece of strip material, the said platform (24) being rotatable about two horizontal axes. The inclined table and the platform (24) are provided with perforations which are connected to a compressed-air source (29). There is a device (6) for joining together the cut-off pieces of strip material (14), which contains a resilient button (33) for holding the edge of the cut-off piece of strip material (14) by its side edge and a movable stop (35) located behind the button (33) and intended for this side edge. The resilient button (33) has a stop for the opposite side edge of the preceding cut-off piece, the said stop being lower than the movable stop (35). Such an apparatus for the cutting to size and joining together of the strip material is reliable in operation and has a high capacity. <IMAGE>

Description

The present invention relates to the processing of strip material and be meets an aggregate for cutting and assembling Strip material.

The present invention is most successful in the production of strip material of the rubber type laid cord fabric for carcasses and pillow layers for Wheel tires are used.

An Ag made according to the present invention gregat for cutting and assembling stripe size material can also be used in the manufacture of technical rubber and in the paper industry.

It is an aggregate for cutting and assembling zen of strip material, namely of rubber-covered cord tissue known (SU A 10 65 240).

The well-known unit for cutting and assembling set of strip material contains, in technological Sequence arranged one device for feeding the starting strip material from a roll in a given straight line direction, a diagonal cross cutting machine for making pieces of the strip materials, the side, front and rear edges ha ben, a device for moving and orientation the cut pieces of strip material, one Device for assembling the cut pieces of the strip material on their side edges and for Formation of the finished strip material and a Vorrich device for taking off the finished strip material in a straight line left direction, which is transverse to the direction in which the Zu routing of the starting strip material to the diagonal cross cutting machine takes place, runs.

The device for feeding the exit strip measure terials from the roll has a bobbin with a drive, on which the role is located.

The diagonal cross cutting machine has a cutting device attached to a support and with a disc knife.  

The diagonal cross cutting machine also has a conveyor device for feeding the unwound strip material rials for the cutting device and photo transmitter for control the width of the cut pieces.

The device for moving and orienting the cut pieces of strip material contain one Feeding device with compressed air suction cups and mechani claws attached to moving sledges are.

The sled with the fixed suction cups can be turned vertically ter direction while the carriage is moving with can move the grippers in a horizontal direction ver transverse to the feed direction of the starting strip material running.

The fixed suction cups are used to lift the parts of the cut pieces of strip material from the conveyor Setup of the diagonal cross cutting machine.

The droolers serve to pick up the parts the cut pieces of the strip material at subsequent assembly of their side edges hold and the finished strip material on acceptance after assembling the side edges further move.

The device for assembling the cut off pieces of strip material on their side channels and to form the finished strip material holds a pressure plate and two support plates.

One of the support plates is mounted so that it rela tiv to the side edge of the device for the Acceptance of the finished strip material cut pieces can be oriented exactly, wäh rend the other support plate relative to the corresponding one Edge of the previously cut piece, that too intended to put the pieces together, exactly orien can be tiert.

The support plates are also attached so that they can approach each other until they touch each other. They are perforated with a Va The vacuum source is connected to hold on to the  other edges of the cut pieces to be joined.

The pressure plate can move in the vertical direction move to the edges of the cut off to be joined press pieces of the strip material together.

The device for taking the finished strip size terials contains a device for winding, an on drive roller for feeding the finished strip material rials in this facility and one with a drive ver seeing Bobine.

In the known cutting and cutting unit The use of strip material is a photo transmitter for control the position of the cut pieces of the finished strip fenmaterials provided with the device for moving against the cut pieces, with the device for Assemble the cut pieces and with the pre direction for the acceptance of the finished strip material ver are bound.

In the known cutting and cutting unit The device for loading has strip material because of the cut pieces of strip material a rather complicated construction and is unreliable sig in operation, since they contain a large number of individual el has elements that address in a precisely defined order and alternating with certain parts of these pieces must have an effect.

The compressed air vacuum cleaners are set up so that alternately with vacuum and then again with one Connect the compressed air source. The grippers serve holding parts of the cut pieces of the Strip material after the fixed vacuum cleaner is turned on it have acted to move in a cross-feed direction direction of the starting strip material and for successive opening when released of the cut pieces after assembling them.

The device for assembling the cut off pieces is also due to a complicated construction marked. It must be on an exact orientation tion of the pressure and support plates relative to the together edges to be cut to pieces  Whoever is careful of a perfect joint what takes a significant amount of time, so the performance of the known cutting and cutting unit Compounding of stiffening material drops significantly.

The object of the present invention is to achieve reasons, a unit for cutting and assembling to create strip material in which the device to move and orient the cut Pieces of the strip material and the device for closing assemble the cut pieces of the stripe terials are designed so that they are reliable Ensure operation of the unit at high performance.

This object is achieved in that in an Ag gregat for cutting and assembling stripe size material of the kind of rubber-coated cord fabric, which, in technological order arranged one after the other, a device for feeding the starting strip material rials from a roll in a given straightforward direction tion, a diagonal cross-cutting machine for manufacturing of pieces of strip material, the side, front te and rear edges, a device for moving and for orientation of the cut pieces of the Strip material, a device for assembling the cut pieces of the strip material on ih side edges and to form the finished Strip material with a pressure plate and a front direction for the acceptance of the finished strip material in rectilinear direction that is transverse to the feed direction of the starting strip material, contains, according to the invention the device for moving and orien the cut pieces of the strip material as an inclined table and one behind it arranged stage with a stop for the front edge the cut piece of strip material, which can be swiveled around two horizontal axes, one of which is perpendicular to the feed direction of the Starting strip material and the other perpendicular to  The direction of acceptance of the finished strip material is the inclined table and the stage with a perforation are provided and there is a source of compressed air that with the perforation of the inclined table and the stage ver is bound, and the device for assembling the Feather cut pieces of the strip material de Bar to hold the edge of the cut piece of the strip material from the side edge, the is pivotally mounted about a horizontal axis which runs parallel to the other axis of rotation of the stage, and a move attached behind the resilient ledge stop for this side edge of the cut off that piece of strip material that led away and can be brought up while the resilient bar a stop for the opposite side edge of the previous cut piece of the strip materials that is lower than the movable stop lies.

By such an embodiment of the device for Move and orient the cut pieces the strip material is easy and with automatic acceptance if the power is high enough the cut pieces of the strip material from the Transport device of the diagonal cross cutting machine with exact orientation of the cut pieces the front and side edges relative to the Ab direction of acceptance guaranteed.

This is due to the inclination of the table and the equipped with a stop and also through the Generation of air cushions between the cut Piece of strip material and the surfaces of the ge inclined table and the stage scored.

Such air cushions prevent the cut pieces of the strip material on the Surface of the table and the stage and contribute to it that the pieces of strip material over the can move the inclined surface more easily.  

The stage rotatable about horizontal axes allows you to easily and quickly the direction of movement of the cut pieces of strip material underneath to change a certain angle and cut off to orientate pieces exactly according to their lateral edge ren.

In addition, this stage enables temporal closure putting the orientation of the pieces together with the feed tion of the starting strip material and its cutting in pieces on the diagonal cross cutting machine where through the performance of the unit for cutting and closing assembly of strip material is significantly increased.

The presence in the device for assembly put the cut pieces of strip material a fe rotatably mounted around a horizontal axis dering bar with a stop and a movable Attack that can be brought up and taken away, ensures quick and precise orientation of the side edges of the pieces of strip material rela tiv to each other, so that the edges of the pieces with a predetermined and across the entire width of the pieces even overlap.

In addition, the following automatic hang up the edge of the top piece to the edge of the bottom Piece and the unhindered oriented acceptance of the fer strip material when the stop is moved away ensures.

It is appropriate that the device for acceptance a reversing device of the finished strip material for its movement.

The reversing device of the device for acceptance of the finished strip material allows together with the stop of the resilient bar except for the removal of the Com from the device for assembling the pieces finished strip material a fast and exact orientation of the rear edge of the piece of Strip material that is currently being taken off to the on put on the next piece.  

From what has been said it can be seen that the fiction moderate aggregate for cutting and assembling Strip material through high reliability and performance is marked.

The previously mentioned and other advantages of before lying invention are by the following description one that does not limit the essence of the invention kreten embodiment with references to Drawings understandable, and that shows

Fig. 1 shows a schematic representation of a unit according to the Invention for cutting and assembling strip material in side view, the strip material is indicated by dash-dotted lines;

Fig. 2 as in Figure 1, cut in plan view with partial From;

Fig. 3 is a view in the direction of arrow A in Fig. 1;

Fig. 4 shows the assembly B in Fig. 3 on an enlarged scale, partially in longitudinal section.

The unit according to the invention for cutting and Assembling strip material is as follows in the text for brevity as "inventive aggregate gat ".

The unit according to the invention primarily serves Cutting and assembling rubber-covered cord fabric that due to the specific properties of Raw rubber can be glued together.

The unit according to the invention contains, one behind the other in a technological order on a stand 1 ( Fig. 1), a device 2 for feeding the starting strip material from a roll 3 in a given straight direction, a diagonal cross cutting machine 4 for producing pieces of the strip fen material, a device 5 for moving and for orienting the cut pieces of the strip material, a device 6 ( FIG. 2) for assembling the cut pieces of the strip material and a device 7 for removing the finished strip material in a straight line which is transverse to the direction of guidance of the starting strip material runs.

The feed device 2 ( Fig. 1) contains a mounted on the stand 1 drive 8 with an electric motor of any known, ge suitable for this purpose construction, the drive 8 is kinematically connected to a bobbin (not shown) on which the role 3 is wound up.

The device 2 also includes a compensation device 9 , which has a support 10 attached to the stand 1 , on the upper part of which guide rollers 11, 12 are attached on both sides.

On the support 10 , a roller 13 is attached, which can move along the support 10 in the vertical direction Rich. The rollers 11, 12, 13 are aligned so that the starting strip material 14 can run over them.

The compensation device 9 is used to store the material 14 in one of the lower positions of the roller 13 during the cutting of the material 14 on the diagonal cross-cutting machine 4 .

On the stand 1 , a roller 15 for introducing the material 14 into the diagonal cross-cutting machine 4 is introduced .

The diagonal cross-cutting machine 4 has a belt conveyor 16 of a known construction, which is attached to a frame 17 fastened to the stand 1 and has a drive 18 of any known construction suitable for this purpose.

The diagonal cross-cutting machine 4 contains a carrier 19 which is fastened to the frame 17 above the conveyor 16 and which can move in the feed direction of the material 14 according to the arrow "C" ( FIGS. 1, 2). The carrier 19 can also rotate about a vertical axis 20 ( FIG. 2) for cutting the material 14 under different angles relative to its feed direction "C" . For loading and rotating the carrier 19 , any known means can be used.

On the carrier 19 , a carriage (not shown) of a known construction is mounted with a disk knife 21 ( FIG. 1) which rotates along the carrier 19 when the carriage moves.

The diagonal cross-cutting machine 4 is used to manufacture pieces 22 ( FIG. 2) of the strip material 14 which have lateral 22 a , 22 b , front 22 c and rear 22 d edges. Depending on the angle by which the carrier 19 is rotated relative to the direction "C" , the cut pieces 22 have the shape of various parallelograms, in the present case the shape of a rectangle.

The diagonal cross-cutting machine 4 can ensure a different length of the side edges 22 a , 22 b , that is, a different width of the pieces 22 at different positions of the support 19 along the feed direction "C" .

The device 5 for moving and orienting the cut pieces 22 of the strip material 14 has an inclined table 23 ( Fig. 1, 2) and a stage 24 behind this with a stop 25 for the front edge 22 a of the cut piece 22 of the material 14 .

The stop 25 represents a bar which is designated by the same reference numeral 25 and is arranged perpendicular to the feed direction "C" . In other cases, the strip 25 can be at an acute angle to the feed direction "C" , which is the angle through which the carrier 19 is rotated by means of two adjusting devices 26 ( FIG. 2) of the screw-nut type.

The inclined table 23 ( Fig. 1) is mounted with the help of brackets (not shown) behind the conveyor 16 on the stand 1 and inclined in the feed direction "C" . The upper left edge of the inclined table 23 in FIG. 1 is at a height with the belt of the conveyor 16 and the lower right edge - at a height with the upper left edge of the stage 24 . In the present case, the inclination angle of the table 23 to the hori zontal plane 12 ° and the inclination angle of the stage 24-5 °.

The stage 24 is mounted on a frame 24 a ( Fig. 1, 3), which in turn is attached to the stand 1 , and can rotate about two horizontal axes 27 ( Fig. 1) and 28 ( Fig. 3). The axis 27 extends perpendicular to the direction of "C" of the material 14 and the axis 28 - perpendicular to the direction of decrease "D" ( Fig. 2) of the finished strip material 14 a . The axes 27, 28 are attached to the frame 24 a by any known means (not shown).

The inclined table 23 and the stage 24 are provided with egg ner perforation. There is a compressed air source 29 ( Figs. 1, 3) which is a blower of any known construction suitable for this purpose which is mounted on the stand 1 and communicates with the perforation of the inclined table 23 and the stage 24 .

There is a working cylinder 30 for rotating the stage 24 about the axis 28 , which is connected to the compressed air source 29 , is present.

There is a photo transmitter 31 ( FIG. 1) for checking the width of the pieces 22 of material 14 to be cut and a photo transmitter 32 (FIGS . 1, 3) for checking the position of the front edge 22 a of the piece 22 . The photo transmitters 31, 32 have any known construction suitable for this purpose.

The device 6 ( Fig. 2, 3, 4) for assembling the cut pieces 22 of the material 14 has a resilient strip 33 ( Fig. 4) for holding the edge of the cut piece 22 of the material 14 from the side edge 22 a .

The bar 33 can rotate about a horizontal axis 34 , which runs parallel to the other axis of rotation 28 ( FIG. 3) of the stage 24 .

There is a movable stop 35 ( Fig. 4) for the side edge 22 a of the cut piece 22 , which is a plate which extends in relation to the stop 25 ( Fig. 2) in the transverse direction and with its upper (corresponding to Fig. 4) End 35 a is articulated to a frame 36 ge. This frame 36 is attached to the stand 1 , and its position can be regulated at any desired angle to the direction "D" with any known means.

There is a connected to the compressed air source (not abge forms) compressed air cylinder 37 for moving the stop 35 about the axis of the joint 35 b to the side edge 22 a . The resilient strip 33 has a stop 38 located lower than the movable stop 35 for the opposite side edge 22 b of the previously cut piece 22 .

To achieve an overlap of the side edges 22 a and 22 b of adjacent pieces 22 to be put together, the movable stop 35 is offset relative to the stop 38 in the direction D ( FIG. 3) in such a way that a gap (not shown) is formed between them.

There is a pressure plate 39 ( FIG. 4) which is mounted in the space between the stops 35 and 38 and can move in the vertical direction in guides 40 fastened to the frame 36 . The pressure plate 39 is rigidly connected to the piston rods of two compressed air cylinders 41 , which are located at some distance from one another, are fastened to the frame 36 and are connected to the compressed air source (not shown).

There is a support plate 42 on which the edge of the piece 22 rests with the edge 22 b .

There are photo transmitters 43, 44 (FIGS . 3, 4) for checking the position of the edges 22 a and 22 b of adjacent pieces 22 to be assembled, which have any known known construction suitable for this purpose.

The device 7 ( Fig. 3) for the removal of the finished strip material 14 a has an inclined table 45 , which in the technological process behind the composition device 6 is mounted on a frame 46 attached to the stand 1 ( Fig. 2, 3). The angle of inclination of the inclined table 45 can be changed using any known means suitable for this purpose.

The inclined table 45 receives the rear end part of the finished strip material 14 a . The inclined table 45 is perforated which is connected to a compressed air source ( Fig. 3) of any known construction. The inclined table 45 has limit strips 48 ( Fig. 2) which are attached to the sides of the inclined table 45 , the distance between them can be regulated by means of regulators 49 of the screw-nut type.

Above the table 45 , a photo transmitter 50 (FIGS . 2, 3) of a known construction for checking the connection of the pieces 22 is attached to a frame 46 .

Behind the inclined table 45 is in the production flow direction attached to the stand 1 attached to drive roller 51 with a reversing device 52 ( Fig. 3) of a drive of any known construction.

The roller 51 is attached so that it can move to ensure an even fit of the finished strip material 14 a to the roller 51 in a vertical direction, ie, without bending strongly.

Behind the roller 51 is on the frame 46, a guide roller 53 ( Fig. 2, 3), behind which a belt conveyor 54 and a device 55 for winding up the finished strip material 14 a are up to a role. The roll is wound on a bobbin 56 , which has a drive 57 , which is an electric motor of any known construction and on egg nem fixed to the stand 1 frame 58 ( Fig. 3) is instal lated.

The unit according to the invention for cutting and Composing strip material works to follow so.  

Before starting the operation, the carrier 19 of the diagonal cross-cutting machine 4 is moved in the feed direction "C" of the starting material 14 to cut the pieces 22 to the required width and rotated about the axis 20 by the required angle, in the present case by 90 ° relative to Direction "C" .

The photo transmitter 31 to control the width of the pieces 22 is mounted above the inclined table 23 of the device 5 for moving and orienting the cut pieces 22 in such a way that the distance from the photo transmitter 31 to the disc knife 21 is equal to the required width of the piece 22 .

The stop 25 of the device 5 for moving and for orienting the cut pieces 22 is brought to the required width of the pieces 22 in position by means of the adjusting devices 26 parallel to the carrier 19 .

The limiting strips 48 of the device 7 for removing the finished strip material 14 a are attached to each other with the aid of the regulating devices 49 , the distance between them having to correspond to the width of the finished strip material 14 a .

The frame 36 is brought together with the resilient bar 33 , the stop 35 , the pressure plate 39 and the support plate 42 at the same angle to the feed direction "D" of the finished strip material 14 a in position, under which the carrier 19 is attached. Then you turn on the sources 29, 47 for the supply of compressed air to the perforations of the inclined table 23 , the stage 24 and the table 45 .

The starting strip material 14 is unwound from the roll 3 with the aid of the device 2 and reaches the conveyor 16 of the diagonal cross-cutting machine 4 via the rolls 11, 13, 12 of the compensating device 9 and via the roll 15 . The starting strip material 14 is transported further by the conveyor 16 onto the inclined table 23 , in the perforation of which compressed air is conducted from the source 29 .

When passing the front edge of the output strip material 14 beneath the photo transmitter 31 to control the width of the pieces 22 , a command to stop the conveyor 16 is given, the carriage with the disc knife 21 moves along the carrier 19 and cuts a piece 22 of the strip material 14 from.

Then a command to turn on the conveyor 16 for feeding the starting strip material 14 to cut off the next piece 22 is given. The cut piece 22 , one part of which lies on the rear edge 22 d on the feeding conveyor 16 and the other part on the front edge 22 c on the inclined table 23 , is pushed by the conveyor 16 onto the perforated surface of the table 23 and slides over him away and then on air cushions over the stage 24 and detaches from the starting strip material 14 , which is fed by the conveyor 16 in the direction "C" to cut off the next piece 22 . The cut piece 22 slides up to the stop 25 and is oriented on the stop 25 with its front edge 22 c .

Due to the fact that the angle of inclination of the Ti cal 23 is slightly larger (12 °) than the angle of inclination of the stage 24 (5 °), there is a rapid separation of the cut piece 22 from the output strip material 14 , forming a gap between the cut Piece 22 and the output strip material 14 , which is necessary for the response of the photo encoder 31 to control the width of the pieces 22 and for a smooth feed of the cut piece 22 to the stop 25th

By a signal from the photo transmitter 32 to control the position of the front edge 22 c of the piece 22 , the stage 24 is rotated with the help of the working cylinder 30 about the horizontal axis 23 by 8 ° upwards. The cut-off piece 22 slides on an air cushion over the stage 24 to the assembly device 6 up to the movable stop 35 .

At the same time, the next piece 22 of the strip material 14 is cut off, thereby cutting the time from the next piece 22 and feeding the previously cut piece 22 in the direction "D" together. When the cut piece 22 abuts the movable stop 35 , a small wave (unevenness) of the material arises on the piece 22 in front of the assembly device 6 , and the side edge 22 a aligns itself with the stop 35 .

Thereafter, the photo transmitter 44 issues a command to the compressed air cylinder 41 for lowering the pressure plate 39 . The plate 39 lowers and presses on the spring bar 33 , on which the edge of the cut piece 22 lies, and deflects the bar 33 downwards, which thereby rotates about the axis 34 . As a result, the side edge 22 a comes to lie with an overlap on the edge 22 b of the finished strip material 14 a , which rests on the support plate 42 , and is connected to it by gluing together.

At the same time, the platform 24 lowers with the help of the working cylinder 30 into the starting position. After carrying out the assembly, the pressure plate 39 is raised with the aid of the compressed air cylinder 41 , the impact 35 is carried away by the compressed air cylinder 37 and a command to switch on the rotary drive of the roller 51 of the removal device 7 is given.

As a result, the finished strip material 14 a abgenom men with the help of the rotating roller 51 in the direction "D" , wherein it moves on an air cushion over the upper surface of the inclined table 45 .

During onward transport, the finished strip material 14 a is aligned on the inclined table 45 between the loading strips 48 . The end of the finished strip material 14 a during the movement in the direction "D" due to the inclination of the stage 24 to the horizontal plane in the feed direction " C" during the movement in the direction "D" constantly pressed against the stop 25 and aligned with it.

The finished strip material 14 a runs at a high speed through the device 6 and when the edge 22 b passes under the photo transmitter 44 , a command to reverse the rotation of the roller 51 is given by the device 52 .

Due to the inertia, the finished Strei fenmaterial 14 a still a certain way in the direction "D" , then the finished strip material 14 a runs by turning on the reversing device 52 of the drive of the roller 51 back in the opposite direction on the inclined table 45 to Stop 38 of the resilient strip 33 . When the edge 22 b passes under the photo transmitter 44 , a command is given to switch off the reversing device 52 of the roller 51 .

When the material 14 a moves in the opposite direction, a wave (unevenness) also arises on the starting strip material 14 when it hits the stop 38, as a result of which the edge 22 b aligns itself slightly with the stop 38 .

After the finished strip material 14 a runs at a high speed through the device 6 and thereby clears the stage 24 , the process of cutting off the following piece 22 of the starting strip material 14 is ended. As a result, the next cut piece 22 reaches the stage 24 .

The control of the connection of the pieces 22 in the finished strip material 14 a is taken by the photo transmitter 50 before. The photo transmitter 50 generates a command to stop the conveyor 16 of the diagonal cross-cutting machine 4 when deviations in the connections of the cut off pieces 22 are detected.

The finished strip material comes on the Füh approximately roll 53 on the conveyor 54 and further in the on device 55 for winding up the finished strip material 14 a to a roll on the reel 56 , which is rotated by a drive 57 .

Experimental sample of the unit according to the invention Cutting and assembling strip material  have successfully passed the test, the results of which high reliability and high performance testify.

Claims (2)

1. aggregate for cutting and assembling strip material of the type of rubber-coated cord fabric, which, in technological order, is arranged one after the other,
a device ( 2 ) for feeding the starting strip material from a roll ( 3 ) in a predetermined straight direction (C) ,
a diagonal cross-cutting machine ( 4 ) for producing pieces ( 22 ) of the strip material ( 14 ) which have lateral ( 22 a, 22 b) , front ( 22 c) and rear ( 22 d) edges,
a device ( 5 ) for moving and orienting the cut pieces ( 22 ) of the strip material ( 14 ),
a device ( 6 ) for assembling the cut pieces ( 22 ) of the strip material at their lateral edges ( 22 a , 22 b) and for forming the finished strip material ( 14 a) , which has a pressure plate ( 39 ), and
a device ( 7 ) for removing the finished Strei fenmaterials ( 14 a) in a straight line (D) , which runs transversely to the feed direction of the starting strip material ( 14 ), characterized in that the device ( 5 ) for moving and orien tion of the cut pieces ( 22 ) of the strip material ( 14 ) an inclined table ( 23 ) and a behind the sem arranged stage ( 24 ) with a stop ( 25 ) for the front selvedge ( 22 c) of the cut piece ( 22 ) Has strip material ( 14 ) which can be pivoted about two horizontal axes sen ( 27, 28 ), one of which ( 27 ) perpendicular to the feed direction (C) of the starting strip material and the other ( 28 ) perpendicular to the removal direction (D) of the finished strip material ( 14 a) runs, the inclined table ( 23 ) and the stage ( 24 ) are provided with a Lo chung and a compressed air source ( 29 ) is present, the un with the perforation of the inclined table ( 23 ) d the stage ( 24 ) is connected, and the device ( 6 ) for assembling the cut pieces ( 22 ) of the strip material ( 14 ) a resilient strip ( 33 ) for holding the edge of the cut piece ( 22 ) of the strip material ( 14 ) from its lateral edge ( 22 a) ago, which is pivotally mounted about a horizontal axis ( 34 ) which runs parallel to the other axis of rotation ( 28 ) of the stage ( 24 ), and a movable stop attached behind the resilient bar ( 33 ) ( 35 ) for this side edge ( 22 a) of the cut piece ( 22 ) of the strip material ( 14 ), which can be guided away and brought up, while the resilient bar ( 33 ) has a stop ( 38 ) for the opposite side edge ( 22 b) of the previous cut piece ( 22 ) of the strip material, which is lower than the movable stop ( 35 ). 2. Unit according to claim 1, characterized in that the device ( 7 ) for taking from the finished strip material ( 14 a) has a reversing device ( 52 ) for its movement.