DE102005050482B3 - Continuously embroidering and cutting materials, especially appliques, in embroidering machine with laser cutting head, with cutting unit operated during frame shut-down and/or material advancement stage - Google Patents

Abstract

In a continous method for embroidering and cutting materials, especially appliques (12), in an embroidering machine where the material (4) is processed in a laser cutting unit, the cutting unit is operated during the shut-down of the embroidery frame and/or during the advancement of the material (based on the rotation cycle of the machine).

Description

The The invention relates to a method for continuous embroidering and Cutting applications, in particular on large embroidery machines, according to the preamble of claim 1, 2 or 3.

The The invention is based on a state of the art, which provides that on an embroidery machine on a base material an application material placed and fixed there and subsequently from the application material cut out applications with the help of a laser cutting device which remain on the base material and are fastened there.

Such a method for attaching applications by embroidery on a base material is, for example, with the subject of DE 44 26 817 C2 known. In this known method, however, the Nähguthalteahmen is moved upon activation of the laser beam successively, but different from the movement in a sewing or embroidering. That is, it is a stationary laser cutting head, which is moved over a moving fabric frame, so as to cut out applications that were previously attached to the base material.

The DE 34 20 763 A1 and the DE 35 02 893 A1 , suggest that you can make laser cutting on large embroidery machines. The point here, however, is to operate additional engraving tools, perforating tools, and other cutting and machining tools together with the embroidery machine. The way in which the operation is done with the embroidery machine is not disclosed there.

With the subject of DE 44 11 364 C2 It can only be seen that one cuts out applications with a laser cutting beam in order to subsequently attach them to a base material.

Of the The invention is therefore based on the object, a method and a device for continuous embroidering and cutting of Fabrics on an embroidery machine according to the preamble of claim 1, 2 or 3 so that the working cycles of the embroidery machine be optimally exploited, d. H. it should also during the embroidery process at the same time a laser cutting can take place.

to solution The object is the invention by a method according to a first embodiment according to claim 1, characterized in that the laser cutting unit during the Standstill of the hoop works the fabric.

With The given technical teaching is a significant step forward across from achieved in the prior art, because it has been surprisingly recognized that it is possible too is during the complete, continuous and continuous work cycle an embroidery machine at the same time carry out a laser cutting. It it turned out that in a range of revolution of the prime mover in the angular range From 210 to 360 degrees the hoop needs to be moved while in the before lying angle range from 0 degrees to about 210 degrees, the stitch formation in the fabric takes place together with the embroidery of the yarn and that while this time the hoop is stationary and at the same time a laser cutting unit are brought into engagement with the fabric can.

This assumes that the laser cutting device is extremely fast and can be switched off.

at a machine speed in the range of 500 to 1,000 revolutions A machine cycle lasts from 60 to 120 per minute Milliseconds.

Around now the laser cutter in the range of rotation between 0 up to 210 degrees of machine rotation in engagement with the fabric to bring and turn off again, so is only a time of about 40 to 80 milliseconds available.

Of the used term "fabric" means embroidery a basic material and the processing of a (fabric) application as well as the sole embroidery of a basic material and the processing this basic material.

Here lies the value of the invention, which is a particular economic Editing a substance allows because it is no longer necessary that after embroidery process a subsequent cut of elements on the application and / or the base material got to.

The both operations (Embroidering and cutting) are thus during a machine cycle carried out consecutively following.

In another embodiment The invention is according to claim 2 provided that the laser cutting device during the movement of the embroidery frame works, which requires that the movement of the laser cutter must be synchronized with the movement of the hoop.

at this embodiment So it is assumed that the laser cutting during the movement of the hoop takes place.

In a third embodiment the invention according to claim 3 it is also envisaged that the laser cutting both during standstill of the hoop as well the movement of the hoop takes place.

All three embodiments be for taken separately claimed as essential to the invention.

A Development of the invention is preferred to the cutting of a Applied application material, which is arranged on a base material is (claim 4). In another training can also be a basic material be embroidered and at the same time a laser processing on this Basic material (cutting or surface treatment) take place (Claim 5). For the sake of simplicity, in the following description the processing of a base material with a mounted on it Applikationsstoff described in more detail. Also, in the following description, only the first is preferred Embodiment of Invention, which is directed to the fact that the laser cutting tool in engagement with the application material during standstill of the hoop comes.

With the technical teaching according to the invention a substantial increase in production is achieved because the downtime of the hoop, not for other operations can be used, now used according to the invention for laser cutting becomes.

Of course it is The invention requires that the downtime of the hoop for embroidering (i.e., used for stitch formation in the fabric itself However, what happens with the cutting of laser applications has nothing to do.

This is a significant advance over the prior art, at first in a first step parts or even the entire fabric was embroidered, then the machine was shut down and in one second operation, the already embroidered fabric with the laser cutting head was edited.

It is the rest also known to be first embroiders, then the laser cuts and then embroiders what with even more elevated Workload is connected.

Here uses the invention, which is an additional laser cutting unit as a device on a conventional United embroidery machine grow.

Here the advantage is that even conventional large embroidery machines are retrofitted can, because it is enough easy, on a big embroidery machine An additional To attach running frame, on which the laser head arranged movable is.

A common one Operation then happens as follows (claim 6): The empty, still unembroidered fabric is clamped in the hoop, and it will first in a second step, the application material on the base material attached. As mounting options There are different types of attachment, such. B. by basting stitches, by spot gluing, by surface gluing, by staples and by simultaneous ruffling or sewing the two superimposed substances (Claim 7).

Of the so in the hoop held double-layered fabric is in certain Embroidered areas, the entire embroidery width, z. From 15 Meters, can be exploited. The height to be embroidered can be up to to 1.60 m (height of the available standing hoop).

In This operation now embroidery seams are attached, which the later Fix applications in the respective interior area on the base material.

It is therefore the attachment of embroidery ornaments, which in the later Interior of the auszuschneidenden applications are attached.

Of the Laser cutting head hangs still outside of Embroidery hoop on his driving frame and will now be in the area of Embroidery hoop procedure. He prefers to catch on the left Side of the fabric frame to cut out the required applications, the underlying material is not damaged or should be hurt.

such Applications can be of any kind, z. B. Flowers, related patterns, fonts, symbols and the like more (claim 8).

Of the cut out application material is provided with appropriate mechanical Removed funds, z. B. by suction, brushing or by other mechanical Cleaning devices (claim 9).

in the Connection to this laser cutting of the applications is it is still possible on the base fabric or base additional embroidered applications to provide (claim 10).

It may also be provided, even on the already cut out applications attach additional embroidery patterns (claim 10).

To the description of the general cutting and embroidery process is still noted that during the standstill of the hoop the laser cutting device the Cut out applications and shortly thereafter after finishing the cutting process immediately the embroidery process is continued (claim 11).

More accurate said the laser head goes left to his first working field, and always when the frame is stationary because the embroidery needles go through penetrate through the material, the laser head cuts in the context of his Working field the applications. Then the laser head interrupts his cutting process while the frame is moved to make the next stitch. First when the needles penetrate into the fabric again, the cutting process continued, but now the previous cutting position with the adjoining, further cutting position must be compensated so that the intermediate feed is compensated on the hoop (claim 12).

This Process is repeated in the area of this working field, until the application has been cut out in the entire intended field of work (Claim 12).

in the next Work step then becomes the laser head around its working field width moved to the next cut surface and leads There, the same process as stated above (claim 12). The intersecting fields overlap themselves or lie against each other, so as to make a continuous cutting to enable the applications (Claim 13).

This assumes that the feed of the laser cutting head with the feed of the hoop is synchronized in some way (claim 13).

This Embroidery and cutting process is repeated until the entire Embroidery frame width is processed.

A Development of the invention is preferably directed to that Cut out corresponding application materials with a laser cutting head be (claim 4). In another embodiment of the invention it is envisaged that instead of cutting out a surface finish takes place (claim 5). Such a surface treatment can be an engraving, a pricking, drilling or other non-cutting action be on the application substance (claim 15).

As well it is provided in another embodiment of the invention, that after the laser cutting of the applications or independently of the Laser cutting of the applications resting on the base material after cutting out the applications also the basic material on its surface Surface-like with the laser cutting head is processed (claim 14). Such a surface treatment can z. B. also an engraving, a cutting process, drilling or other destructive and not destructive surface treatment be (claim 15).

In A further development of the invention can also be provided be that at the very beginning of the embroidery process, the basic material with the inventive laser cutting head either surface finished or is also cut to order so then the application material To pin or apply on the base material and then all perform previously mentioned steps (claim 16).

Of the Laser cutting head is therefore not only for cutting an application substance determined and suitable, but he can also at the beginning of the machining process first also process the base material (claims 4 and 5).

in the Below, the invention will be described with reference to only one embodiment illustrative drawings closer explained. Here are more from the drawings and their description Essential to the invention features and advantages of the invention.

It demonstrate:

1 : Schematically, a plan view of an application provided with base material

2 : Section through an application material that is attached to a base material with various measures

3 : schematizes the operation of the device

4 : a perspective side view of the device

5 : an enlarged view of the working field on the fabric frame

6 : Schematics a section through an application attached to a base material

7 : one opposite 1 modified embodiment of a base material with it be firm application

8th : schematizes the front view on an embroidery hoop with further details

9 : the representation of two cycles of the embroidery machine

10 : a way-time diagram of the hoop

11 : a vector diagram of stitch formation

12 FIG. 2: a speed-time diagram of the embroidery frame in a first embodiment. FIG

13 : the diagram after 12 in a second embodiment

14 Basically, it is anticipated that in addition to a single laser cutting head and a plurality of laser cutting heads - possibly also independently controllable - can come into use. Here is a significant advantage of the invention, which is that the downtime of the embroidery frame are used for a laser cutting head, which - as stated - and several laser cutting heads can be brought into engagement with the application material to be processed.

In 1 is generally represented a finished product, where it can be seen that on a base material 11 applications 12 by appropriate embroidery ornaments 9 were fastened.

It is also shown that on the base material 11 additional embroidery designs 16 can be attached.

The 2 shows the beginning of the operation, where in various embodiments is shown how to use an application material 13 which is later cut out on a base material 11 attached.

It is shown as an example that this with the help of adhesive dots 14 between application substance 13 and basic material 11 can be done. Likewise, it is shown that this temporary attachment of help of basting stitches 15 can be done.

It is also shown that the later for fastening the applications 12 used stitches were already made in this step. These are the embroidery ornaments shown there 9 ,

The 3 schematically shows a section through a machine, where it can be seen that the two in 2 interconnected substances 11 . 13 now be edited with a laser cutting head.

The entire cutting head 3 consists of a hood 21 in which a laser source 17 is arranged, which is their beam 18 on a deflection unit 19 steers, in which a number of mirrors 20 are arranged.

The mirror 20 are controlled electronically, so a cutting beam 22 in the field of a working field 23 on the application material 13 head for.

The invention is preferably based on the generation of a single cutting jet 22 directed. There may also be several cutting jets from the deflection unit 19 can be generated, and it can - in another embodiment - and multiple laser sources 17 be present, each of which has a controlled cutting beam 22 on the work field 23 directs.

In the field of this field of work 23 Now a cutting action on the application material 13 carried out with the aim of the application 12 cut.

To the resulting residues of the application substance 13 to remove, it is provided in one embodiment of the invention that these residues in the field of work 23 be sucked off.

Next The suction comes in other mechanical removal means Consideration, z. B. the use of an additional ultrasound unit to to loosen the cutting debris or mechanical cleanings, such as z. B. brushes and more.

Important here is that the entire cutting head 3 on a roller guide 24 on a carrier 2 along the embroidery machine in the direction of the arrows 25 is driven displaceably.

In 4 Further details of an embroidery machine with said laser cutting device after 3 shown.

It can be seen that the material to be processed on a cloth shaft 1 is wound, which is rotatably driven in the direction of the arrow.

It can also be seen that the substance 4 in the upper area only the raw material 11 with the applications attached to it 12 involves while beyond a line 26 the remaining, duplicated fabric, consisting of the basic material 11 and the application material 13 is available. With an on operating rail 5 is the cutting head 3 formed displaceable in the width of the fabric frame, said drive rail 5 For example, it can be a spindle drive. However, it can also be an autonomous drive motor in the cutting head 3 be present, for example, with a pinion on the toothed drive rail 5 rolls.

Instead of a stationary drive rail 5 It is also possible to use toothed belts, drives or the like.

Importantly, first in the upper box above the line 26 the embroidery machine embroidery seams 6 attach which the application material 13 with the basic material 11 in the form of the ornament 9 connect with each other.

These embroidery seams 6 are installed in the interior of the respective application, because their outer area with a cutting edge 10 is cut out.

This shows the operation with respect to the line 26 where the previously duplicated substances 11 . 13 now beyond the line 26 were cut out above.

The embroidery needles 7 are all in a row or line 30 and come controlled by the embroidery program of the machine in engagement with the duplicated fabric, consisting of raw material 11 and application material 13 ,

Of course, not all embroidery needles 7 be engaged to the respective embroidery thread 8th to embroider.

The Schiffli embroidery machine shown here can also be replaced by a multi-head embroidery machine, in which usually the fabric 4 lies with the fabric frame in a horizontal plane and per embroidery head only a single needle engages the fabric 4 located.

The 6 schematically shows a section along the line 6-6 in 1 where it can be seen that now with cut edges 10 provided applications 12 with the help of embroidery ornaments 9 on the base 11 are attached.

The 7 shows an embodiment of another application 12 in a different shape.

For the correct understanding of this figure, it must be assumed that the entire fabric is not in the vertical direction, but horizontally and that the downward arrow of a horizontal partial direction 27 equivalent. Here it should be shown that the working field 23 of the cutting head 3 each migrates and in a working field 23 ' in forward direction 27 driven cutting head 3 to change.

The 8th again shows the possibility of attachment from a separate embroidery design 16 next to the work field 23 that of the cutting head 3 is processed.

It goes without saying that even several cutting heads 3 could be present with several adjacent work fields.

The working field 23 thus moves in the direction of the arrow 27 For example, to the right to enter the workspace 23 ' move.

The 9 shows two cycles of revolution of the large embroidery machine, and it can be seen that during the time t _1, a standstill 32 the embroidery frame takes place and that only at the time t ₂ a movement 33 of the hoop takes place.

According to the invention, the time is now during standstill 32 of the hoop used for cutting, as in 9 given below. At position 35 (Rotation 0 of the machine) the laser cutting head is switched on and cuts until the turn at position 36 , which corresponds to a rotation angle of 210 degrees.

At position 36 The laser cutting head is turned off, and the embroidery frame is moved in the revolution range between 210 and 360 degrees, during which time the laser is turned off and is not in engagement with the material to be cut.

Upon completion of a full machine revolution at 360 degrees, the laser will be in position 37 switched back on and must continue cutting where he is at position 36 ceased. This requires a layer compensation, so that in the meantime moved by a certain distance hoop again with the end point of laser cutting at position 36 is synchronized.

There is now a second laser cycle, again between the positions 37 and 38 is cut and penetrate the needles of the embroidery machine in this area in the fabric and perform the embroidery pattern, while from the position 38 again takes place a movement of the embroidery frame and the needles are out of engagement with the fabric.

The 10 shows a movement time diagram for the embroidery frame in the X and Y directions.

Here it is stated that between the positions 35 and 36 a laser cutting takes place and that from the position 36 (Rotation angle about 210 degrees of the machine), the hoop is moved in both the X and Y directions.

At any time t, the shift in X and Y directions can thus with the times t _x and t _y are found.

The movement curves 40 . 39 So are movement curves of the hoop in the X and Y direction.

Accordingly, according to 11 a so-called stitch sector 41 performed in the XY plane, and it is possible at any time t _x and t _y to determine the current fabric position, then to synchronize the laser cutting head.

The 12 shows as a first embodiment, a speed curve of the hoop, where it can be seen that at position 36 and at a rotation angle of about 210 degrees, the cycle of movement of the embroidery frame begins, which is approximately arc-shaped with respect to speed and 360 degrees (position 37 ) ends.

Important in this illustration is that the laser cutting outside of this movement curve, namely between position 35 and 36 he follows.

In 13 is shown as an alternative that the laser cutting can also take place in the region of the movement curve of the hoop, namely in the area between the positions 36 and 37 , This requires synchronization of the laser cutting head as shown in FIG 11 , Here it must be determined at each point in time, at which point the substance is, by laser cutting 13 while the hoop is moving. So it can be the entire embroidery field 29 to be edited.

The 7 shows, moreover, that in addition to cut-to-size applications, you can not cut out applications on the base material 11 can attach, as in the form of sequins 28 in 7 is shown.

The 9 shows that in each case in successive working cycles 34 preferably during standstill 32 of the hoop is cut.

In 8th In this case, the material feed takes place in the vertical direction of the arrow 31 up.

The 14 shows a basic structure of a control device, which consists essentially of a central computer 44 consists of both the data for the embroidery machine and for the cutting head 3 generated.

The data for the embroidery machine are sent via the data line 45 the controller 46 for the embroidery machine, while the data for the control of the cutting head 3 over the data line 47 the controller 48 be forwarded.

Should it according to the embodiment after 13 be provided that the laser cutting takes place during the movement of the hoop, must be an exchange of data over the data line 50 in 14 take place between the embroidery machine data and the control of the laser.

advantage The invention resides in that with the novel method now high production progress is achieved, because the in itself unused Time at standstill of the hoop (meanwhile the stitch formation takes place) is now according to the invention for a laser cutting of applications used.

In the other embodiment, it is even further provided that also the movement time of the hoop for the laser cutting of applications is used.

1

fabric roller

2

carrier

3

cutting head

4

material

5

drive rail

6

Stick seam

7

embroidery needles

8th

embroidery thread

9

Stick ornament

10

cutting edge

11

raw material

12

application

13

appliqué fabric

14

gluepoint

15

basting stitch

16

embroidery

17

laser source

18

beam

19

Deflector

20

mirror

21

Hood

22

cutting jet

23

field of work 23 '

24

roller guide

25

arrow

26

line

27

horizontal arrow

28

sequins

29

embroidery area

30

line

31

vertical arrow

32

standstill

33

Move

34

duty cycle

35

position

36

position

37

position

38

position

39

motion curve

40

motion curve

41

random vector

42

position

43

speed curve

44

central computer

45

data line

46

control embroidery machine

47

data line

48

control laser

49

arrow

50

data line

Claims (16)

Process for the continuous embroidering and cutting of fabrics, in particular applications ( 12 ) on an embroidery machine, the material to be processed ( 4 ) with a laser cutting unit ( 3 ) is processed, characterized in that based on a revolution cycle of the machine, the laser cutting unit ( 3 ) during standstill of the hoop the substance ( 4 . 11 . 12 . 13 ) processed. Process for the continuous embroidering and cutting of fabrics, in particular applications ( 12 ) on an embroidery machine, the material to be processed ( 4 ) with a laser cutting unit ( 3 ) is processed, characterized in that based on a revolution cycle of the machine, the laser cutting unit ( 3 ) during the advancement of the hoop the substance ( 4 . 11 . 12 . 13 ) processed. Process for the continuous embroidering and cutting of fabrics, in particular applications ( 12 ) on an embroidery machine, the material to be processed ( 4 ) with a laser cutting unit ( 3 ) is processed, characterized in that based on a revolution cycle of the machine, the laser cutting unit ( 3 ) during standstill of the embroidery frame and during the feed the substance ( 4 . 11 . 12 . 13 ) processed. Method according to one of claims 1 to 3, characterized in that the processing of the substance ( 4 . 11 . 12 . 13 ) is a cutting operation. Method according to one of claims 1 to 4, characterized in that the processing is an engraving or engraving or a surface removal of the substance ( 4 . 11 . 12 . 13 ). Method according to one of claims 1 to 5, characterized in that in a first step, the empty, still unembroidered material ( 4 ) is clamped in the hoop, that in a second step, the application material ( 13 ) on the base material ( 11 ) is attached, that in a third step of the so held in the hoop double-layered fabric ( 4 ) is embroidered in certain areas and thus now embroidery seams ( 6 ) in the form of embroidery ornaments ( 9 ), which the later applications ( 12 ) in the respective interior area on the base material ( 11 ) fix that in a fourth step the laser cutting head (outside of the embroidery hoop hanging from its chassis) ( 3 ) into the area of the embroidery frame and the required applications ( 12 ), the underlying material ( 11 ) is not damaged or injured, and that in a fifth step, the cut-out application material ( 13 ) is removed by suitable mechanical means. Method according to claim 6, characterized in that the attachment of the application substance ( 13 ) on the base material ( 11 ) by tacking stitches, by point gluing, by surface bonding, by stapling and simultaneous flaring or by sewing together the two superimposed substances ( 4 ) he follows. Method according to one of claims 1 to 7, characterized in that the applications ( 12 ) are formed by flowers and / or related patterns and / or fonts and / or symbols. Method according to one of claims 6 to 8, characterized in that in the fifth step, the cut-out application material ( 12 ) is removed by suction, brushing or by other mechanical cleaning devices. Method according to one of claims 6 to 9, characterized in that following the fourth step of the laser cutting processing of the applications ( 12 ), additional embroidery applications on the base material or base material ( 11 ) and / or on the already cut out applications ( 12 ) are applied. Method according to one of claims 6 to 10, characterized in that shortly after the fourth step of the laser cutting machining of the applications ( 12 ) or shortly after the fifth step of the mechanical removal of the cut application substance ( 13 ) Immediately resume embroidery. A method according to claim 11, characterized ge indicates that the laser head ( 3 ) goes to his first field of work, and always when the hoop is stationary, because the embroidery needles ( 7 ) through the substance ( 4 ), the laser head ( 3 ) within the scope of his field of work the applications ( 12 ), then the laser head ( 3 ) interrupts its cutting operation while the hoop is moved to form the next stitch and that only when the needles ( 7 ) back into the fabric ( 4 ), the cutting operation is continued, wherein the previous cutting position is compensated with the subsequent, further cutting position so that the intermediate feed on the hoop is compensated and that this process is repeated in the area of this working field until the application ( 12 ) is cut out in the entire intended field of work and that in the next step then the laser head ( 3 ) is shifted by its working field width to the next cutting surface and there performs the same process, as stated above. Method according to one of claims 6 to 12, characterized in that the cutting fields of the laser cutting head ( 3 ) overlap or abut one another to allow continuous cutting of the applications ( 12 ), wherein the feed of the laser cutting head ( 3 ) is synchronized with the feed of the hoop. Method according to one of claims 6 to 13, characterized in that after the laser cutting of the applications ( 12 ) according to the fourth step or independently of the laser cutting of the on the base material ( 11 ) resting applications ( 12 ) after cutting out the applications ( 12 ) also the raw material ( 11 ) on its surface with the laser cutting head ( 3 ) is processed like a surface. A method according to claim 14, characterized in that the surface treatment of the base material ( 11 ) is an engraving, cutting, drilling or other destructive or non-destructive surface treatment. Method according to one of claims 6 to 15, characterized in that at the very beginning of the embroidering process as a second step, first the base material ( 11 ) with the laser cutting head according to the invention ( 3 ) is either surface-treated or also cut-to-work in order to subsequently apply the application substance ( 13 ) on the base material ( 11 ) or apply and then carry out all subsequent operations.