DE102008007729A1 - Pipe winding assembly, for pipe coils around reels with a side flange, has a grip at the feed to place the leading end in a holder at the reel - Google Patents

Abstract

The winder installation (1), to wind piping (3) in a coil, has a reel (6,7) with at least one side flange with a holder for the leading end of the pipe. The workpiece feed (10) has nippers to move the leading end of the pipe into the holder, radially within the side flange.

Description

The The invention relates on the one hand to a winder with a workpiece feed, a bobbin and at least one side flange, in particular Such a winder with a holder for a workpiece beginning. Likewise, the invention relates to a winding method in which a Start of a workpiece to be reeled in a holder attached and then the workpiece is wound up, taking the holder of the winding movement at least over part of the Winding movement follows.

Around Be able to handle pipes of almost any kind This particular for transport purposes by means of suitable winder wound on coils to coils. By means of such coils is also a Provision of large quantities of pipes at corresponding processing machines good to handle.

In order to a tube wound on a coil to a coil It is first necessary to have a pipe start so comes into contact with the coil that the pipe beginning at Winding the raw remains in a fixed position on the spool. To ensure the fixation of the tube to the coil, are known from the prior art brackets, which are arranged on the coil, clamp the pipe start and doing so accordingly fix on the spool or which follow a part of the winding movement, to ensure a reliable winding process in this way. As difficult and complicated proves it so far, the beginning of the pipe too to guide the holder of the coil exactly to this in the Secure mounting bracket.

This is how both the DE 10 2004 058 330 A1 and the DE 33 25 101 A1 as well as the WO 2002/022484 A1 Solutions for this, but overall, unfortunately, can not lead to satisfactory results. This can be done according to the DE 10 2004 058 330 A1 are guided along a fixed system to a mechanical support and taken from this. However, this can lead to a kinking, especially when workpieces that are unstable in itself, especially when large coil radii are to be wound. The DE 33 25 101 A1 In contrast, proposes to pass the workpiece over a separate gripper on the bobbin, so that this reaches the bobbin radially inward lying and then fixed there in unspecified manner and can be wound, but this leads to significant material losses with each new winding process. The WO 2002/022484 A1 suggests to bring the workpiece over a pair of pliers to the bobbin and fix it with tape. For this, however, the tape must be connected to the workpiece over a certain length, so that the pliers can grasp the workpiece only with a large approach, which in turn requires the risk of kinking.

It Object of the present invention, the feeding of a Beginning workpiece, in particular to a holder of a Coil to facilitate and thereby make more reliable, as this is the case so far.

The The object of the invention is achieved by a winder with a workpiece feed, a bobbin and at least one side flange solved, in which a holder for a workpiece beginning is provided and which is characterized in that the workpiece supply an insertion drive with a workpiece holder includes for importing the workpiece into the holder and that the workpiece holder of the insertion drive at least in an inserted state radially inside the side flange is arranged.

through of the insertion drive described here is inventively a Workpiece beginning, for example, a pipe, active and specifically led to the holder of the coil, so that a Fixing the workpiece beginning on the bobbin, especially in the holder of the bobbin, essential more reliable and thus can be made faster.

Previous solutions for example from the DE 10 2004 058 330 A1 comprise only a passive system, by means of which a workpiece beginning can be jammed against the bobbin. Often, however, this leads to a bending of the workpiece. However, such kinking is undesirable because it renders parts of the tube useless. Also in the WO 2002/022484 A1 Due to the omission of a holder which is replaced by an adhesive strip, the solution shown requires a relatively long approach, which involves the risk of kinking.

In demarcation to that in the WO 2002/022484 A1 shown adhesive strip, the holder is preferably reusable or firmly connected to the bobbin or one of the coil side flanges. As a result, the speed when changing the bobbin can be increased considerably, since only one arm needs to be moved. Also, this increases accordingly the reliability. An adhesive strip would have to be manually removed for reuse and then re-applied manually, which ultimately under normal operating conditions at high workpiece throughput not shown, let alone reliably shown, can be.

Accordingly, the task of He also solved by a winding method in which a beginning of a workpiece to be spooled mounted in a holder and then the workpiece is wound, wherein the holder of the winding movement at least over a part of the winding movement, preferably over at least one revolution, follows and the workpiece beginning of a Einführtrieb taken and guided into a holding position.

Thereby, that the workpiece beginning of the insertion drive is taken and actively led to the holding position, is the threading and fixing a tube to a coil quite decisive compared to the usual from the state Practice improved.

Around the workpiece beginning easily in the holder of the bobbin to be able to thread, it is advantageous if the insertion drive the workpiece beginning with a supernatant grasps. This means that, for example, a pipe from the insertion drive is taken so that the pipe or a pipe beginning over the Introductory drive sticks out. Thus, this supernatant Tube start advantageously fed to the holder and, for example put in the holder and be gripped by this.

So that the insertion drive can thread the workpiece or the workpiece beginning precisely, it is advantageous if the projection is smaller than the difference between the outer radius of the coil to be wound and the outer radius of a winding body. By such a selected supernatant, it is the insertion drive possible to be zoomed much closer to the holder of the coil to be as this WO 2002/022484 A1 in which the pliers dip only a little into the circumference of the side flange and no statements are made to the outer radius of the coil to be reeled, so that the risk of damage to the workpiece, such as a kink, can be minimized by the very small supernatant ,

Of the The term "spool" herein describes those cylindrical body of a coil, on its lateral surface a workpiece, in particular a tube, is wound up.

Preferably extends radially to this spool at least at one side of the coil a side guide, by means of which the wound tube is guided laterally such that Thus, it can not get into an area that over the lateral surface of the winding body protrudes. In the present case, the side guide a side flange of a Be winding body.

The Difference between the outer radius of the side flange and describes the outer radius of the bobbin in the present case a space which is radially outside the lateral surface the bobbin is located and both axially and radially limited by the dimensions of the side guides becomes.

The The terms "axial" and "radial" are in the present Related to the axis of rotation of the coil related to which the spool rotates during a winding process.

In an alternative embodiment, the supernatant smaller than the difference between the outer radius of a to be wound coil circumference and the outer radius of the bobbin be, with the coil circumference to be wound usually the minimum Radius of the side guide or the side flange represents.

A related preferred variant of the device provides that the workpiece holder of the insertion drive is arranged at least in the insertion state radially within a coil circumference to be wound. As a result, in particular, the workpiece holder of the insertion drive can be brought much closer to the holder of the bobbin, whereby an accurate delivery of the workpiece start to the holding tion is possible. In deviation from the WO 2002/022484 A1 , in which the pliers dip only a little bit into the circumference of the side flange and no conclusions are made to the outer wheel of the coil to be reeled, this can be minimized in particular the risk of kinking or other damage to the workpiece top.

In an alternative procedure, the insertion drive grab the workpiece start at its tip, into the Hold position and there at least at the beginning of Coiling as a holder, optionally as an additional holder, hold. In that regard, can be dispensed with further brackets, in particular if the insertion drive, at least during the beginning of the spool can rotate with the bobbin.

Around a workpiece as described above, by means of Safely grasp and hold the insertion drive it is advantageous if the workpiece holder of the insertion drive includes a movable pliers.

Especially in terms of a single coil, it is advantageous if the workpiece holder, preferably a pair of pliers, the Einführtriebes movable in the side flange is guided, this way can be extremely reliable supply of the beginning of the workpiece up to a holder or to a holding position of the workpiece start respectively.

In particular, the workpiece holder also be stored on the side flange or on the winder, so that in this case no separate holder is necessary. By such a configuration, the workpiece holder can remain on the winder and rotate with it. Although such an arrangement is also conceivable in the case of multiple spools, it is relatively expensive because of the workpiece receptacles to be provided per spool.

A Storage of the workpiece holder on the side flange or On a side guide has the advantage that the workpiece holder very reliable on the side flange or other side guide can be performed, as between leadership and workpiece holder only a very short distance is necessary.

on the other hand the insertion drive may comprise a movable arm which a workpiece holder, preferably a pair of pliers, is appropriate. This arrangement may be with the arm extended somewhat more fragile and possibly - depending on the concrete requirements a correspondingly more stable structure. However, possible this embodiment in particular one of a side guide or independent of a side flange mounting the workpiece holder, the latter possibly also on the side flange or on the side guide can support, even with outstretched arm very stable and to be purposefully guided.

In order to the workpiece especially during feeding and during Threading into the holder of the coil is not too heavily loaded and hereby optionally with regard to its material properties is adversely affected, it is advantageous if the Einführtrieb the tube force-free leads to the holding position. This can be solved, for example, such that a per se known workpiece conveyor during the Feeding runs along. In this way, the workpiece becomes especially during feeding not too strong loaded.

A further variant of the method provides that the insertion drive vorgebiegt a front part of the workpiece beginning or the front part of the workpiece beginning with the reaching the stop position bends. By means of an at least slightly curved At the beginning of the workpiece is achieved that the workpiece better fixed in the holder and thereby the risk of unintentional Solving the workpiece from the bracket strong is reduced. Also, by a suitable pre-bending the bracket completely outside the coil to be wound be so the latter wound very evenly can be. It is understood that such a pre-bending also independent of the other features present Invention is advantageous. The same applies to a winder, when this is through a bending device for the workpiece beginning distinguished. In this case, the bending device, in particular on the Einführtrieb, on a support arm and / or in the immediate Environment of a workpiece holder of the insertion drive be arranged.

Further It is advantageous if a beginning of a workpiece to be spooled at least over during the first revolution at least 1 ° against a side flange, so at least in axial Direction, is pressed. A push against one Side flange Begin of winding is from the prior art not known. Although there are manual procedures in which a mechanic or machine operator before spooling the workpiece fastened in a holder and attached to a side guide or a side flange presses. With Begin of winding But then, for security reasons, to a manual Pressing is omitted. For other procedures is supplementary or in deviation thereof during the first turns the workpiece by means of a hammer or a similar tool manually against a side guide knocked, which also differs from a pressing. One such pressing proves to be much gentler for the workpiece and also requires a very uniform structure of the then wound coil.

Around to be able to perform such a pressing, provides a device variant that the winder at least one during the first revolution at least over 1 °, at least in the axial direction effective pressure for having a workpiece beginning.

A related embodiment provides, that the presser on an arm, in particular on a Arm with a workpiece holder, is provided. hereby can the presser together with the insertion drive be moved and it takes for the presser no separate operation be provided.

Advantageous It is in this context, if the presser the Press workpiece against a side flange of the winder.

Preferably the presser is effective at least over 10 °. Depending on the workpiece and / or the requirements of the winding process, In fact, it is advantageous if the pressing at least over 10 °. The aforementioned advantages also apply too if the press is still on advanced rotation the coil is maintained.

Advantageously, the pressing takes place at the beginning of the winding. In particular, when starting a winding process, it easily happens that a Rohran catch itself from a holder and does not follow the rotation of the coil. Therefore, it is particularly important that the pressing starts to take place at the beginning of winding. Pressing the beginning of the tube before the beginning of the spool could also be neglected in the present case. For the above reasons, it is advantageous if the presser is effective according to the beginning of the winding.

In order to the present presser flexible against a Coil can be placed, it is advantageous if the presser is arranged on a movable arm. In that regard, the presser without Further used with several bobbins, without that separate structural measures are required.

In this context, in particular for pressing a pipe start, It is advantageous if the arm or the presser at least temporarily supported on the side flange. This can an excellent stable guidance even with long outstretched Arm be guaranteed.

On the holder described above for fixing a workpiece beginning may be omitted if the arm in or on a Spool and / or in or on a side guide or a side flange is mounted. In such a case The workpiece holder of the arm can serve as a holder. The same applies to any existing bending device. Likewise, the presser in or on a bobbin and / or in or on a side guide or a side flange be stored, which then leads to a particularly compact design. In such a case, the presser preferably moves not in relation to the workpiece, so he preferably should be equipped with a corresponding radial extent. Also, the entire insertion can accordingly with The coil are stored rotating. These solutions are together but also individually, especially for single spoolers advantageous because they only require a modification of the coil.

Especially for retrofitting a plant with several already existing coils and systems that have multiple coils should it be advantageous if the arm or the insertion drive and / or the presser and the bending device stationary are stored. In such an embodiment only needs a presser, a corre sponding insertion drive be provided while, moreover, already known or existing coils, bobbin or side guides or - flanges, can be used. This can save considerable costs.

There by the nature of the present pressing a winding, in particular the beginning of a winding process, more reliable is carried out so far, the features in terms the pressing or the presser described here even without the other features of the invention for a winding method advantageous.

As immediately comprehensible, is in the present context between a pressing, which over longer Time takes place, and a call waiting, which only over short, the natural frequencies of the tapped workpiece in the Anklopfrichtung roughly corresponding time intervals is to be distinguished. However, instead of the pressure described here or Andruckers also a call waiting or a call waiting provided be as long as the call waiting accordingly on a machine Call waiting, and not manually done. In that regard, is in the present Related to any mechanical device, in addition to a bracket Ensures that a coil start against a side guide or against a side flange of a coil at the beginning of a winding process, especially during the first turn, with a force is to be understood as a presser.

Especially advantageous is the winder or the winding method in terms of Use for workpieces whose bending radius is below Gravity is greater than the coil radius. In particular, when coils of such workpieces, is a threading described above and holding in a coil required or advantageous. Less stable workpieces, such as for example, threads, yarns or very thin wires, however, already by the holder and a sufficient outside of the wound coil diameter be guided.

Especially suitable is the winder or the present winding method for the use for pipes, since pipes in themselves are proportionate are sensitive and change their cross-section at excessive load and thus a gentle yet sufficiently secure fixation the workpiece in particular at the beginning of the winding advantageous is.

Advantageous is the winder or the winding method also in terms of use for workpieces with a diameter larger than 2 mm, preferably greater than 3 mm. Also regarding such workpieces, the present invention is characterized from, as for workpieces from such a diameter a Fixation against a coil at least at the beginning of a Winding process is advantageous.

The present winder or the present winding method is particularly advantageous with regard to the use of metallic workpieces, since they are rather rigid and higher holding forces during spooling len zw. Bending must be applied, in particular without sensitive workpieces, such as pipes with thin walls or made of soft materials and workpieces with sensitive surfaces to be able to safely rewind.

Further Goals, advantages and features of the present invention explained on the basis of the following description of the appended drawing, in which by way of example a system for transporting and connecting of tubes with a winder comprising an insertion drive, as well as components of an insertion drive are shown. It shows

1 1 is a schematic view of a system for processing pipes with a connected winder having an insertion drive;

2 1 is a schematic view of a detail of an insertion drive with a movable grasping forceps for a tube beginning,

3 schematically a view of an insertion drive within an outer radius of a bobbin or a Spulseitenflansches, and

4 schematically a view of a presser of an insertion drive for a pipe.

The in the 1 shown processing plant 1 includes a material supply basket on the input side 2 , the pipe material 3 stored. This material basket 2 If necessary, can be replaced to new pipe material 3 or other longitudinally extending workpieces, such as rods, wire or the like, wide. The pipe material 3 runs on the output side through various processing stations 4 and arrives on the output side of the processing plant 1 to a bending machine 5 , with the help of which the pipe material 3 pre-bent and then on a spool 6 is wound up.

The sink 6 is part of a spooler 7 that has a first winding unit 8th and a second winding unit 9 has, by means of which the respective coil 6 can be rotated.

The winder 7 includes in the area of its bending apparatus 5 an insertion drive 10 , by means of which a tube beginning 3A (see in particular 2 to 4 ) of the pipe material 3 into the coil 6 held in and moved.

The insertion drive 10 this includes a movable arm 11 on which a movable pliers 12 (see in particular 2 ) with a fixed jaw 13 and to this fixed jaw 13 movable jaw 14 is arranged.

In this embodiment, the movable arm takes over 11 at the same time the function as presser, with which the pipe material 3 against a coil side flange 15 or optionally also against a bobbin 16 can be pressed. This is advantageous for the beginning of the pipe 3A with his supernatant 3B in the range of a holder 17 the coil 6 is fixed at least until the pipe material 3 due to several convolutions of the bobbin 16 , in particular the jacket surface 16A of the bobbin 16 , independently in the rotating coil 6 remains.

In the present case, at least the movable arm 11 of the insertion drive 10 radially inside the coil side flange 15 and thus also be moved within the coil circumference to be wound. The insertion drive 10 remains as long as radially inside the Spulenseitenflansches 15 until the coil 6 is rotated by as many degrees of angle about its axis of rotation that ensures that the beginning of the pipe 3A opposite the coil 6 was held for a long time and the pipe material 3 can be safely wound without interruption. During this phase, the pipe material becomes 3 especially with its tube beginning 3A additionally against the coil side flange 15 pressed. Preferably, this pressing begins only with the onset of the coil rotation, so that the coil 6 , a related reel storage and the insertion drive 10 not unnecessarily long burdened with relatively high pressure forces.

On the movable arm 11 There is also a bending device 18 , by means of which in cooperation with the movable pliers 12 the pipe start 3A can be angled by a few degrees, so that the beginning of the pipe 3A advantageous in the holder 17 can be jammed. For this purpose, the movable pliers 12 opposite the movable arm 11 according to the directions of rotation 19 around a rotation axis 20 to be turned around.

In this embodiment, the movable arm 11 stationary with respect to the bending apparatus 5 fastened so that the movable arm 11 for several coils 6 different winding units 8th or 9 is available.

1

processing plant

2

Material supply basket

3

pipe

3A

beginning of the pipe

3B

Got over

4

processing station

5

bender

6

first Kitchen sink

7

second Kitchen sink

8th

first A winder

9

second A winder

10

introduces Rubbed

11

movable poor

12

movable tongs

13

fixed jaw

14

relocatable jaw

15

Spulenseitenflansch

16

bobbins

16A

lateral surface

17

bracket

18

bender

19

directions

20

axis of rotation

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 102004058330 A1 [0004, 0004, 0008]
• - DE 3325101 A1 [0004, 0004]
• WO 2002/022484 A1 [0004, 0004, 0008, 0009, 0013, 0019]

Claims (35)

Spooler with a workpiece feed, a bobbin and at least one side flange, wherein a holder for a workpiece beginning is provided, characterized in that the workpiece supply a workpiece holder (pliers 12 ) comprises comprehensive insertion drive for importing the workpiece into the holder, and at least the workpiece holder of the insertion drive is arranged at least in an insertion state radially within the side flange. Spooler according to claim 1, characterized in that the holder is reusable. Spooler according to claim 1 or 2, characterized that the holder is fixed to the bobbin or one of Coil side flanges is connected. Winder according to one of claims 1 to 3, characterized in that the workpiece holder of the insertion drive ( 10 ) is arranged at least in the insertion state radially within a coil circumference to be wound. Winder according to one of claims 1 to 4, characterized in that the workpiece holder of the insertion drive ( 10 ) a movable pliers ( 12 ). Winder according to one of claims 1 to 5, characterized in that the workpiece holder, preferably a pair of pliers ( 12 ), movable in or on the side flange ( 15 ) is guided. Winder according to one of claims 1 to 6, characterized in that the insertion drive ( 10 ) a movable arm ( 11 ), on which a workpiece holder, preferably a pair of pliers ( 12 ) is appropriate. Winder according to claim 7, characterized in that on the arm ( 11 ) an at least in the axial direction effective Andrücker for the workpiece beginning ( 3A ) is provided. Winder, in particular also according to one of the preceding Claims, characterized with at least one side flange at least over at least during the first revolution 1 °, at least in the axial direction effective presser for a workpiece beginning. Winder according to claim 9, characterized in that the presser the workpiece ( 3 ) against the side flange ( 15 ) of the spooler ( 7 ) presses. Spooler according to claim 9 or 10, characterized that the presser is effective at least over 10 ° is. Winder with at least one side flange, in particular according to one of claims 9 to 11, characterized in that a presser at the beginning of the winding ( 7 ) is effective in the axial direction. Winder according to one of claims 8 to 12, characterized in that the presser at least temporarily at the side flange ( 15 ) is supported. Winder according to one of claims 8 to 12, characterized in that the presser movable in a side flange ( 15 ) is guided. Winder according to one of claims 8 to 13, characterized in that the presser on a movable arm ( 11 ) is arranged. Winder according to claim 15, characterized in that the arm ( 11 ) at least temporarily on the side flange ( 15 ) is supported. Winder according to one of Claims 7, 8, 15 and 16, characterized in that the arm ( 11 ) in or on a bobbin ( 16 ) is stored. Winder according to one of Claims 7, 8, 15 and 16, characterized in that the arm ( 11 ) is stored stationary. Winder according to one of claims 1 to 17, characterized in that the insertion drive ( 10 ) with the coil ( 6 ) is mounted co-rotating. Winder according to one of claims 1 to 16 and 18, characterized in that the insertion drive ( 10 ) is stored stationary. Winder according to one of the preceding claims, characterized by a bending device ( 18 ) for a workpiece beginning ( 3A ). Winder according to claim 21, characterized in that the bending device ( 18 ) on an insertion drive ( 10 ), on a presser and / or on a movable arm ( 11 ) for the insertion drive ( 10 ) and / or the presser is arranged. Winding method in which a beginning of a to be spooled Workpiece mounted in a holder and then the workpiece is reeled, the holder of the winding movement at least over a part of the winding movement follows, characterized in that the workpiece beginning seized by a Einführtrieb and is guided to a holding position. Winding method according to claim 23, characterized characterized in that the insertion drive ( 10 ) the workpiece beginning ( 3A ) with a supernatant ( 3B ) takes. Winding method according to claim 24, characterized in that the supernatant ( 3B ) smaller than the difference between the outer radius of the coil to be wound and the outer radius of a bobbin ( 16 ). Winding method according to claim 23, characterized in that the insertion drive ( 10 ) the workpiece beginning ( 3A ) at its tip, leads into the holding position and there holds at least at the beginning of winding as a holder. Winding method according to one of claims 23 to 26, characterized in that the insertion drive ( 10 ) the workpiece ( 3 ) leads force-free to the holding position. Winding method according to one of claims 23 to 27, characterized in that the insertion drive ( 10 ) a front part of the workpiece beginning ( 3A ) bends or bends with reaching the stop position. Winding method, in particular also according to one of claims 23 to 28, characterized in that a beginning ( 3A ) of a workpiece to be spooled ( 3 ) at least during the first revolution at least over 1 ° against a side flange ( 15 ) is pressed. Winding method according to claim 29, characterized that the pressing takes place at least over 10 °. Winding method, in particular also according to one of Claims 23 to 30, in which a beginning ( 3A ) of a workpiece to be spooled ( 3 ) against a side flange ( 15 ) is pressed, characterized in that the pressing takes place with the beginning of the winding. Winder or winding method according to one of the preceding claims, characterized by the use for workpieces ( 3 ) whose bending radius under Erdanziehung is greater than the coil radius. Winder or winding method according to one of the preceding claims, characterized by the use for pipes ( 3 ). Winder or winding method according to one of the preceding claims, characterized by the use for workpieces ( 3 ) with a diameter greater than 2 mm, preferably greater than 3 mm. Winder or winding method according to one of Claims 32 to 34, characterized by the use for metallic workpieces ( 3 ).