EP3755851A1

EP3755851A1 - Keder system

Info

Publication number: EP3755851A1
Application number: EP19708033.6A
Authority: EP
Inventors: Dietmar Heil
Original assignee: Jentschmann AG
Current assignee: Jentschmann AG
Priority date: 2018-02-23
Filing date: 2019-02-20
Publication date: 2020-12-30
Also published as: WO2019162288A1; CH714675A2

Abstract

The Keder system according to the invention comprises a sheet material (5) having two outer surfaces (5a, 5b), and a flap-less Keder body (11), which in turn has at least one holding profile (15), bonded at the edges to one of the outer surfaces (5a, 5b) of the sheet material (5). The bonding region is protected and invisible. When producing the Keder system by means of an automated bonding machine (31), several process steps can be carried out continuously in one step.

Description

Piping system

The invention relates to a Keder system according to the preamble of patent claim 1 and a method and a connection machine for connecting a Kederkörpers with a fabric according to the features of

Claims 6 and 9.

Awnings, roller blinds and advertising tarpaulins generally comprise a curtain or generally a textile or non-textile fabric, in which one or more edges a beaded body is attached.

Such Kederkörper are usually made of plastic and include a rod or tube-like

Retaining profile. To attach the sheet to a piping rail, which has a Kedernut, the

Holding profile in the axial direction end face in the

Kedernut inserted. The Kedernut and the Kederkörper are coordinated so that the retaining profile can be completely absorbed in cross section of the Kedernut. The welt groove comprises a longitudinal gap whose width is smaller than the dimensions of the holding profile transversely to its longitudinal direction. The retaining profile can thus not be inserted through the longitudinal gap in the Kedernut or removed from it. The longitudinal gap is sufficiently wide that the sheet or a connecting means which interconnects the sheet and the holding profile, through this

Longitudinal gap can be passed. A holding profile and an end region of a fabric attached thereto can be held in a form-fitting manner on the piping rail in this manner. Thus, for example, an awning cloth, which comprises in the region of the leading edge and the trailing edge each a piping with a piping body, with a

Winding shaft and connected to a tension profile and kept taut between them.

To attach a piping body to a curtain, the following methods are known:

A) By folding a blind edge and through

subsequent sewing, welding or gluing is a bag or a hose-like hem

educated. The Kederkörper consists essentially only of a holding profile without radially outstanding flags. Such simple holding profiles are usually rod-shaped or tubular and have a round

Cross-section. They can already be inserted during the production of a seam or subsequently introduced into the hose-like seam at the front. B) In other known embodiments, the

Kederkörper an elongated retaining profile and a transverse to the longitudinal direction excellent flag, which usually extends over the entire length of the retaining profile. The flag is substantially thinner than the bead-like region of the holding profile and serves as a connecting means for securing a sheet. The edge area of the sheet is covered with this flag e.g. connected by gluing. When such a welt system attaches to an object having a welt groove

attached, so the flag protrudes with the attached end portion of the fabric through the longitudinal gap of the piping groove.

In these known Kedersystemen at least a portion of the connecting portion of the holding profile and awning fabric is arranged laterally next to the holding profile. If that

Retaining profile holds the piping in the Kedernut a piping rail, this connection area protrudes through the longitudinal gap of the piping groove and is visible from the outside. This has a negative effect on the appearance of such awnings. Moreover, seams are leaking in sewn curtains, resulting in water dripping.

An object of the present invention is therefore to provide a Kedersystem in which the

V rh nHmash r rh vnn Retaining profile and awning fabric unobtrusive and protected from environmental influences is arranged. Another object of the invention is to provide an apparatus and a method for efficient

To provide such a welt system.

These tasks are solved by the characteristics of the

Claims 1, 6 and 9.

The welt system comprises a fabric having two outer surfaces and a welt body connected to the fabric in an edge region of the fabric. The fabric can be on or

be multi-layered and include, for example, a film or a fabric.

The keder body is formed without a flag. He and includes at least one holding profile, but none at this

Retaining profile excellent flag. A flag is a thin flat area of a keder body, which is attached to a

comparatively thick holding profile transverse to its

Protrudes longitudinally and to attach the

Sheet is determined.

In the context of the present invention, in particular those structures are designated as flags whose projection on the holding profile is greater than half the maximum width of the holding profile. The flag thus provides a sufficiently large area for connecting the

P l ‰ rii pn aph i 1 HPR yn r Assay. Holding profiles are intended to be in cross section

to be completely absorbed in the piping groove of a piping rail. Holding profiles do not include flags.

Each holding profile is e.g. by gluing and / or

Ultrasonic welding and / or sewing directly connected to one of the outer surfaces of the fabric with this. Alternatively, a holding profile made of plastic can also be molded onto the fabric. each

Retaining profile preferably comprises a planar contact or connection surface, which rests against the outside of the fabric during bonding. The connection of the

Holding profile with the fabric takes place only when

Holding profile itself. If such a welt system is held in the piping groove of a piping rail, the

Keder body and the area in which the Kederkörper connected to the fabric is completely within the Kedernut. Such connections are protected and not visible from the outside.

The edge of the fabric to which the welt body is attached may directly have a cut edge of the fabric

Be sheet-like. Such piping systems can be produced very efficiently and inexpensively.

Alternatively, a narrow strip of the sheet-RPTPI rh inpr Sr-hn fttkante can be handled and with the adjacent area of the sheet embossed, glued or connected in any other way. This allows a better anchoring of retaining profiles, which causes a higher load capacity of these retaining profiles. Preferably, the width of the envelope corresponds to

Width of the holding profile. If the retaining profile is arranged flush with the cutting edge and / or the outer edge of the fabric, this gives the piping a compact appearance. Moreover, such compact piping can be better inserted into core grooves, and the risk of damaging such piping is minimal.

The retaining profile is preferably a semi-circular profile or a profile with a rectangular cross-section. It thus comprises a flat contact surface. This facilitates that

Connecting to the fabric. In particular, one or more of the following may

Bonding, ultrasonic welding, ultrasonic welding, heating and / or pressing, sewing. Adhesives can be applied in liquid or solid form, in particular in the form of

Adhesive films.

Different embodiments of Kederkörpern may include only a single holding profile or more holding profiles. The holding profile or the holding profiles are preferably flush with an edge of the sheet with pinpr nHpr hpiH n surfaces of the fabric connected. Particularly advantageous is the arrangement of two holding profiles with rectangular or semicircular

Cross-section on the opposite surfaces of the fabric. In this way, a Kederkörper be made with approximately circular or rectangular cross section, which on both sides of the

Sheet has approximately the same size supernatant.

Such Kederkörper can be simple and efficient

be prepared when the retaining profiles through

Longitudinal cutting of a plastic profile can be made with preferably round, square or rectangular cross-section. Such plastic profiles can be stored on rollers and cut immediately before applying to the fabric. In this way, two holding profiles in a continuous process can be efficiently applied to the edge area on the fabric

applied and connected with this.

In particular, two retaining profiles can simultaneously

be applied side by side on one of the surfaces of the sheet, wherein one of these holding profiles is arranged flush with the cut edge of the sheet.

Optionally, preferably in one

continuous process between the holding profiles and the sheet one or more strips of a

Adhesive films are inserted. Subsequently, the holding profiles, for example, by continuous ultrasonic welding or other

suitable joining techniques associated with the fabric. By turning over the cut edge area with the one holding profile and then connecting the

Turned area with the adjacent region of the sheet, the two holding profiles are connected to a common Kederkörper. Again, the connection can be made with the appropriate connection technology. In particular, before wrapping another adhesive film on the holding profiles

opposite side on the fabric

be applied. The process steps required to turn over the edge region and to connect one or more holding profiles to the fabric can all be carried out continuously in one operation.

As an alternative to cutting a plastic profile, one or more prefabricated retaining profiles can also be applied directly to the fabric and with this

get connected. This allows the production of a variety of different embodiments of

Holding profiles and Kederkörpern.

In particular, in this way Keder body

are produced, in which two holding profiles are interconnected by ^r ί ^hh ^p rhi nHnnasahsrhnitt. The Connecting portion may be formed, for example, as a film hinge.

Holding profiles can be made of comparatively hard or

be made of inelastic plastic materials.

This ensures that corresponding piping can not pass through the longitudinal gap of a Kedernut and be held securely in this Kedernut.

Alternatively, retaining profiles can also be made of comparatively soft or elastic materials, for example of rubber or closed-pored

foamed plastics. Cedar body with such

Holding profiles can be compressed so that they can be introduced through the longitudinal gap in a Kedernut and then return to their original shape.

Holding profiles can be designed not only as a solid body, but also hose-like as a hollow body. Such hollow bodies have in comparison to solid bodies

lower material content and are lighter. at

sufficient elasticity of the material can

tubular retaining profiles are also introduced through the longitudinal gap in a Kedernut. The inventive Kedersysteme can be manufactured continuously in one operation. For arranging and connecting one or more holding profiles on

Sheet, the sheet can be moved relative to a Keder-connection machine. Alternatively or additionally, the connection machine can also be moved relative to the fabric. When executing this

Relative movement can be performed before and / or downstream one or more further process steps for the processing of the fabric. In particular, the sheet may be immediately prior to the application of a holding profile and or subsequently, for example by means of a cold knife or an ultrasonic knife

get cut. This allows a particularly accurate and efficient attachment of the holding profile in the

Cutting edge.

Based on some figures, the invention will be described in more detail below. Show

FIG. 1 shows a tension profile of an awning with two conventional welt systems fastened thereto;

Figure 2 shows the tension profile of Figure 1 with two on it

fastened according to the invention

Kedersystemen,

Figure 3 shows the profile of five different

Ha 1 t ^p nrnfilen, FIG. 4 shows two holding profiles interconnected via a film hinge,

FIG. 5 shows a flag piping (prior art),

FIG. 6 shows two embodiments of single-layered welt systems;

FIG. 7 shows three embodiments of welt systems with an envelope strip;

FIG. 8 shows a single-layered welt system whose

Holding profile includes a receiving groove,

FIG. 9 process stages in the production of a

Keder system,

FIG. 10 shows a piping connection automat,

11 shows a profile feeder of

Connection machine of Figure 10,

FIG. 12 shows an edge converter of the

Connection machine of Figure 10 seen from the front,

FIG. 13 shows the edge converter from FIG. 12 seen from the rear,

FIG. 14 shows the insertion of an elastic welt through a longitudinal gap into a welt groove.

FIG. 1 shows a tension profile 1 of an awning on which two conventional welt systems each have a welt groove 3

are attached. Each keder system includes a

Sheet 5 with two opposite outer nh ^p rfl Vh n SI Sh Rei each of these fabrics is 5 a strip-shaped end portion in the region of a

Cut edge 7 of the fabric 5 and connected to the adjacent region of the fabric 5 by two seams 9. The edge portion of the sheet 5 comprises a tubular bag formed by the envelope with an inner surface 5c. In this bag, a piping body 11 is received in the form of a round profile. The diameter of the Kederkörpers 11 is greater than the width of a longitudinal gap 13 of the Kedernut 3, through which the sheet 5 protrudes from the Kedernut 3. The longitudinal seams 9 and generally the

Connection area in which the two layers of the

Sheet 5 are interconnected, is outside the Kedernut 3, where it is unprotected and visible from the outside.

FIG. 2 shows in an analogous manner two welt systems according to the invention connected to the tension profile 1.

In each of these Kedersysteme the Kederkörper 11 comprises two holding profiles 15 in the form of semi-circular profiles. Each of these holding profiles 15 comprises a plane

Connecting surface 15a (Figure 3). Preferably, this connection surface 15a has the same width Bl as a narrow envelope strip 17 of the fabric 5 in FIG

Edge region. This envelope strip 17 is fixed to the immediately adjacent region of the fabric 5 or otherwise fixed connected. This causes an amplification of the

Sheet 5 in the edge area between a

Cover edge or outer edge 19 and the cutting edge 7. The two holding profiles 15 are opposite to the outer edge 19 with the outer

Surfaces 5a, 5b, for example, by gluing, welding-gluing or otherwise firmly connected to the sheet 5. The thus formed Kederkörper 11 has an approximately circular cross-section and can be completely absorbed in the Kedernut 3 of the tension profile 1.

FIG. 3 shows, by way of example, cross sections of five

different holding profiles 15, all of which have a flat connecting surface 15a of width Bl. These are in turn a semicircular solid profile, a rectangular solid profile, a semicircular hollow profile, a rectangular solid profile with a receiving groove 21, a round solid profile with a receiving groove 21. In the last two

Embodiments forms the receiving groove 21 two

internal connection surfaces 15a. In these

Holding profiles 15, the edge region with the outer edge 19 of a sheet 5 in the receiving groove 21st

inserted. In this case, the sheet 5 a

Envelope strips 17 include or not.

Then the two inside

Connecting surfaces 15a connected to the adjacent outer nhprfl Vh n 53. Sh HP sheet 5. In an alternative approach, the last two profile arrangements in Figure 3 each comprise two opposing retaining profiles 15, which by a

Connecting portion are connected together.

Figure 4 shows a further similar arrangement, wherein two semicircular retaining profiles 15 are connected by a connecting portion in the form of a film hinge 23 with each other.

Figure 5 shows a cross-section of a flag liner 24 as known in the art. It comprises a round retaining profile 15 and a protruding on the holding profile 15 transversely to its longitudinal direction flag 26. The width B3 of the flag 26 is greater than the diameter B2 of the

Holding profile 15. The edge region of a sheet 5 is attached to the flag. When such flag keder 24 are held in a Kedernut 3, the flag 26 protrudes through the longitudinal gap. The connection area between the fabric 5 and the flagpole 24 is exposed and visible.

FIG. 6 shows two exemplary embodiments of a welt system, wherein the cut edge 7 of the fabric 5 is at the same time the outer edge 19 of the fabric 5.

prst n _{Ä sfiihr} ungsform comprises the Kederkörper 11 only on one of the two outer surfaces 5a, 5b, a semicircular holding profile 15. In the second embodiment are on both outer surfaces 5a, 5b such

Holding profiles 15 attached to the fabric 5. Optional adhesive films 25 are shown dotted.

Figure 7 shows corresponding arrangements in a

Sheet 5 with an envelope strip 17 between the cutting edge 7 and the outer edge 19. In the first embodiment, the holding profile 15 is on at the

Surface 5a arranged on the envelope strip 17, in the second on the opposite second surface 5b and the third on both surfaces 5a, 5b.

FIG. 8 shows an embodiment of a welt system with a holding profile 15 according to the last one

Embodiment in Figure 3.

Figure 9 shows exemplary process steps in the

Production of a welt system with a piping body 11 or with two by a film hinge 23 interconnected holding profiles 15 according to FIG 4. On the flat connecting surfaces 15a of the holding profiles 15, an adhesive film 25 is applied. Alternatively, a correspondingly wide adhesive film 25 can also be applied to the one outer surface 5a of the fabric 5 adjacent to its cutting edge

7 startup † · wprHpn The retaining profile assembly is adjacent to the

Cutting edge 7 on the one outer surface 5a

glued.

Another adhesive film 25, which has only about half the width of the first adhesive film 25, is applied adjacent to the cutting edge 7 on the second outer surface 5 b of the fabric 5. Alternatively, both adhesive films 25 could also be applied to the surfaces 5a, 5b simultaneously prior to the adhesion of the holding profiles 15.

The section with the retaining profile 15 adjoining the cutting edge 7 is folded over and glued to the adjacent section of the fabric 5 on the second outer surface 5b.

In Figure 10 is a piping connection automaton (short

Connection machine 31) shown, which is adapted to one or more holding profiles 15 with a

To connect sheet 5. He includes one

Machine body 33, which in a working direction A

(represented by a double arrow) relative to

Sheet 5 is controlled by a motor movable. This can e.g. be achieved by the

Connection machine 31 as part of a higher-level system along a guide rail of this system (not

shown), and that the

Sheet 5 in a defined position relative to

Leitnnssrlri PDP is arranged. The location of the Sheet 5 can be fixed or changed controlled by the control of the system. The plant control can thus determine the location of the

Compounding machine 31 relative to the fabric 5 to control exactly even if the fabric 5, for. is moved transversely to the direction A in a roller plotter or a flatbed plotter by a drive roller

(not shown) .

The required to move the connection machine 31 drive and to control the drive

required control may be fully or partially integrated in the connection machine 31 or be formed completely or partially as part of a higher-level system.

Alternatively or in addition to the movement of

Connection machines can also be the fabric 5 at least in the direction A relative to the machine body 33 moves. The working direction A can be fixed

be predetermined or optionally changeable. On the input side, the connection machine 31 comprises a conveyor 35 for feeding one or more plastic profiles. In the embodiment shown in FIG

Plastic profile a round piping, which is removable from a supply roll 37. The conveyor 35 comprises

drivable train and / or pressure rollers 36 and is

vnr aswp qp integrated in R _{I PR} cutting unit 39. The Cutting unit 39 includes a guide channel in which the round welt of the pressure rollers 36 is guided forward. Transverse to the guide channel is a cutting blade 41 so

arranged that it separates the Rundkeder when advancing in the longitudinal direction in two semicircular holding profiles 15.

The position of the cutting blade 41 relative to the guide channel is adjustable by means of an adjusting device (not shown). Downstream of the cutting blade 41, a wedge 43 is arranged, which further separates the holding profiles 15 during the advancement of the round edge. Further downstream, the holding profiles 15 are aligned parallel to one another in a feed region by means of guide rollers 45.

Details of the feed area are shown in FIGS. 11 and 12. Preferably, each of the support profiles 15 is passed between two adjacent, counterrotating, rotatable guide rollers 45a, 45b, each of these guide rollers 45a, 45b having a peripheral profile complementary to that of the support profile 15 in the desired orientation. In the embodiment described herein, the periphery of the first guide roller 45a includes two axially adjacent to one another

arranged, tangentially encircling grooves, each with a semicircular cross-section. The second guide roller 45b comprises two axially juxtaposed

cylindrical sections whose periphery is a flat

Profile. This causes the of the

hnp H p nhp t P ^Q cited strands or holding profiles 15 aligned parallel to each other and in

Transport direction can be seen in the same rotational position.

As shown in Figures 12 and 13 from the front and from the rear, an ultrasonic welding device is disposed further downstream. This includes below a roll sonotrode 47 and above an anvil roll 49, whose

Axes are aligned orthogonal to the working direction A. The anvil roller 49 comprises along its periphery two axially adjacent concave notches, the cross section of which is adapted to the convex curvature of the holding profiles 15. This causes a secure management of

Holding profiles 15 during welding and optimizes the

Introduction of the ultrasonic energy.

For attaching the holding profiles 15 to a sheet 5, the sheet 5 is relative to the connection machine 31 and / or the connection machine 31 relative to

Sheets 5 moved in working direction A. Between the roller sonotrode 47 and the anvil roller 49 are the

Holding profiles 15 applied in parallel on the upper surface 5a of the fabric 5 and welded thereto with the supply of ultrasonic energy. Preferably, when applying the retaining profiles 15 to the upper

Surface 5a between the connecting surfaces 15a of Haltpnmf 1P iS and H r surface 5a of the fabric 5 additionally supplied an adhesive film 25. The width of this adhesive film 25 essentially corresponds to the common width of the two connecting surfaces 15a. Alternatively, a narrow adhesive film strip in the area of each of the two connecting surfaces 15a can also be supplied. A narrow glue - free strip between the

Holding profiles 15 ensures that the outer edge 19 is also free of adhesive when an envelope strip 17 is folded down with the edge-near holding profile 15.

An additional narrow adhesive film stiffener 25 is placed in the region of one of the two holding profiles 15 from below onto the lower surface 5b of the fabric 5

applied. As an alternative to tapes, other means of applying glue may be used.

The adhesive application on the lower surface 5b can take place in the process direction before or after the roll sonotrode 47.

During the relative movement of the fabric 5 in

Working direction A promotes the conveyor 35 with one of a common higher-level control

(not shown) coordinated conveying speed, the two holding profiles 15th At the same time

Holding profiles 15 in the ultrasonic welding device adjacent to the cutting edge 7 of the fabric 5 side by side arranged on the upper surface 5a and H mh Zu fu pnn p1 for sonic energy with the fabric 5 connected. Various parameters of

Ultrasonic welding device such as e.g. the

Drive speeds of the roller sonotrode 47 and / or the anvil roller 49 may preferably in dependence on the conveying speed of the holding profiles 15 or the

Relative speed of the fabric 5 of the

Control be controlled or regulated. This ensures that the holding profiles 15 are optimally connected to the fabric 5 with consistently high quality.

Downstream of the ultrasonic welding device is a near-edge envelope strip 17 of the fabric 5 between the two holding profiles 15 in one

Forming area of the connection machine 31 folded down and connected by the previously applied to the lower surface 5 b adhesive film 25 with the adjacent region of the sheet 5. The two semicircular holding profiles 15 are now opposite to the two surfaces 5a, 5b and, together with the arranged between the connecting surfaces 15a layers of

Sheet 5 a cedar body 11 with approximately circular cross-section. The holding profiles 15 are guided by two pressure rollers 51a, 51b and pressed against the fabric 5 from both sides. The pressure rollers 51a, 51b comprise analogous to the anvil roller 49 along its periphery each have a concave notch whose cross-section to the Vnnv ^y K riimmn nr Holding profiles 15 is adjusted. Preferably, the pressure rollers 51a, 51b are driven by a motor, wherein the speed of the controller

coordinated with the relative velocity of the

Sheet 5 are driven. Optionally, the pressure rollers 51a, 51b can also be used to move the fabric 5 in the working direction A relative to the connection machine 31.

Preferably, the pressing force of the pressure rollers 51a, 51b is adjustable by means of suitable adjustment means.

Inventive Kedersysteme can also be produced with other holding profiles 15 and with other manufacturing methods. FIG. 14 shows by way of example

Keder system in an awning fabric, wherein the holding profile 15 is designed as a semi-circular, elastically deformable hollow profile, so that it can be pressed through the longitudinal gap in the Kedernut 3 an elevator shaft.

Claims

claims

A welt system comprising a sheet (5) having two outer surfaces (5a, 5b) and a featherless piping body (11) disposed in an edge region of the

Fabric (5) with the fabric (5)

connected is,

characterized in that the welt body (11) comprises at least one retaining profile (15), and in that this retaining profile (15) on at least one of the outer surfaces (5a, 5b) of the sheet (5) is connected to this sheet (5).

2. Kedersystem according to claim 1, characterized in that the holding profile (15) a flagless, from

Plastic manufactured solid profile or hollow profile is, and that the holding profile (15) has a flat

Includes connecting surface (15a).

3. Keder system according to claim 1 or 2, characterized

characterized in that the sheet (5) in

Edge region comprises an envelope strip (17), that this cover strip (17) is glued and / or welded and / or sewn to the adjacent region of the fabric (5), and that the at least one holding profile (15) is provided on the side of the cover strip (17 ) or on the Envelope strip (17) opposite side bonded to the fabric (5) and / or welded and / or sewn. 4. Keder system according to one of claims 1 to 3, characterized in that the Kederkörper (11) two

Holding profiles (15), which are adjacent to an outer edge (19) of the sheet (5) on the two outer surfaces (5a, 5b) of the sheet (5) opposite.

5. Keder system according to claim 4, characterized in that the two holding profiles (15) by a

Connecting portion via the outer edge (19) of the sheet (5) are interconnected.

6. A method for connecting a at least one

Holding profile (15) comprising flagless Kederkörpers (11) with a two outer surfaces (5a, 5b) comprising sheet (5), characterized

characterized in that the holding profile (15) in an edge region of the outer surfaces (5a, 5b) by welding and / or gluing and / or sewing with the fabric (5) is connected.

7. The method according to claim 6, characterized

RanHh ^p r ^p i ch of the fabric (5) together with the holding profile (15) is folded and connected to the adjacent region of the sheet (5).

Method according to one of claims 6 or 7, characterized in that a plastic profile with a conveyor (35) conveyed and with a

Cutting unit (39) in two holding profiles (15)

is separated, that these holding profiles (15)

aligned parallel to each other and adjacent to each other in the edge region on the one outer surface (5a) are connected to the fabric (5), and that a near-edge envelope strip (17) of the sheet (5) folded together with the associated there holding profile (15) and at the adjacent other outer surface (5b) is connected to the sheet (5).

Connection machine (31) for connecting a at least one holding profile (15) comprehensive flagless

Kederkörpers (11) having a two outer surfaces (5a, 5b) comprising sheet (5),

characterized by a conveyor (35) for conveying the holding profile (15), a feed device with guide rollers (45) for aligning the

Holding profile (15), an ultrasonic welding device m V rhinH n Holding profile (15) with the one outer surface (5a) in the edge region of

Sheet (5) and a converter with means for folding and securing the folded

Border area at the adjacent other outer surface (5b).

10. automatic connection (31) according to claim 9,

characterized by a cutting unit (39) having a downstream of the conveyor (35)

arranged cutting blade (41) for separating a conveyable from the conveyor (35) round spring in two semicircular holding profiles (15) when the

Round keder from the conveyor unit (35) is conveyed.