• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method for operating an embroidery apparatus, in particular a single-head embroidery machine such as a large embroidery machine, for example a shuttle embroidery machine, or a sewing machine with an embroidery function, or a multi-head embroidery machine, in which embroidery apparatus at least one embroidery frame / holder and a number of embroidery points associated with this at least one embroidery frame / holder with embroidery tools are slidably arranged in the direction of an embroidery base (34) held by the embroidery frame / holder, and drive means for driving the at least one embroidery frame / holder and the embroidery points, and a control unit for controlling the at least one embroidery frame / holder are provided At least one loop stitch is produced on the fabric web at the respective embroidery location in that at least one loop mandrel (7) is driven at least parallel to the embroidery base (34) and can be pivoted relative to the relevant embroidery location and in a first n Work step, the respective embroidery needle (10) at the respective embroidery location is embroidered onto the loop mandrel (7) held in front of or on the embroidery base (34) with at least one loop or row of loops (29, 30, 31, 31 ').
    公开号:CH715558A2
    申请号:CH01437/19
    申请日:2019-11-12
    公开日:2020-05-15
    发明作者:Galiga Andreas；Weber Damian；Bösch Kurt；Friedrich Gerardo
    申请人:Saurer Ag；
    IPC主号:
    专利说明:

    The invention relates to a method and an apparatus for generating a loop stitch on an embroidery apparatus, in particular on a single head embroidery machine such as a large embroidery machine, for example. A shuttle embroidery machine, or a sewing machine with embroidery function, and / or a multi-head embroidery machine.
    In the context of the present invention, the term “embroidery apparatus” as well as “embroidery machine” is understood to mean in each case a device set up for embroidery, in which at least one embroidery hoop or at least one embroidery holder and a number of embroidery sites associated therewith at least one embroidery hoop / holder are arranged with appropriate embroidery tools, and drive means for driving the embroidery frame / the embroidery holder and the embroidery points, and a control unit for controlling the embroidery frame / holder and the embroidery points are provided.
    Such embroidery devices can in particular be single-head or multi-head embroidery machines, the single-head embroidery machine being such an embroidery apparatus that comprises one or more embroidery tools such as an embroidery needle, which on a single embroidery head for the defined movement of the one embroidery needle or for the defined joint movement of the more are arranged as one, ie two or more embroidery needles. Furthermore, such a device can be understood to mean a multi-head embroidery machine which, in contrast to the single-head embroidery machine, has at least two or more embroidery heads, each with a defined number of embroidery needles, for example one embroidery needle or more than one embroidery needle, each embroidery head being provided for the defined embroidery of an assigned embroidery area is.
    Such embroidery equipment or embroidery machines or embroidery devices work with two threads (upper and lower thread) and embroider on a vertically or horizontally arranged embroidery frame or embroidery holder, depending on the type of embroidery equipment .. Large embroidery textiles such. B. curtains, fabrics and tablecloths can be embroidered. Depending on the design of the embroidery equipment, semi-finished and finished goods such as jeans pockets and T-shirts can also be embroidered.
    In these embroidery machines, a fabric web clamped in a movably driven embroidery frame is usually arranged, and there are one or a plurality of embroidery sites, to which (in each case) at least one embroidery needle is assigned. This embroidered with a front thread through the fabric, whereby a so-called rear thread is linked to the front thread. The result of such work is an embroidered fabric that is flat and flat without loops protruding from the fabric level.
    In contrast, moss embroidery devices are constructed differently from such embroidery machines, but use a similar technique. Moss embroidery is created using a single thread system. The needle sticks through the carrier material (e.g. T-shirt) and pulls the thread up under the needle plate. By rotating the needle, a loop remains on the upper side of the carrier material. Repeating this often creates a moss-like surface.
    In machine moss embroidery, the feature of tissue-based embroidery is eliminated. For a shuttle embroidery machine, which in the sense of the present invention falls under the category of single head embroidery machines, a special moss stitch apparatus was developed a long time ago, which consists of an eccentric to be placed on the main shaft with a roller, pull rod, levers and rods and actually an additional thread guide represents. This regulates the thread take-off from the bobbin so that the necessary additional thread quantity is made available for each stitch at the appropriate moment of stitch formation.
    But even without an additional device, the moss bite has been made in different ways, with more or less success. The disadvantage of the known moss sting effect is that in the past an own moss sting apparatus had to be used, which was associated with a high level of machine expenditure and the necessity to provide one's own machine.
    As indicated above, there have also been attempts to produce such a moss stitch effect using conventional large embroidery machines such as the shuttle embroidery machine. However, it is disadvantageous that the moss stitch achieved in this way cannot produce loops which are directed in a defined manner and the loops are inherently unstable, which leads to a troubled embroidery pattern and a corresponding uneven embroidery pattern.
    In the specialist book Friedrich Schönes / Klaus, Freier: Embroidery techniques - VEB Fachbuchverlag Leipzig, 1st edition, 1982, it is described on page 244 how a moss stitch can be produced on a large embroidery machine solely by changing the thread balance.
    However, tests have shown that such a moss stitch suffers from the disadvantages mentioned above, namely an uneven or restless embroidery pattern, variable loop sizes and does not offer the possibility of producing different moss stitch patterns.
    The invention is intended to remedy the disadvantages known from the prior art. In particular, the present invention is intended to be able to achieve a moss stitch effect on an embroidery apparatus, in particular on a single-head embroidery machine such as the shuttle embroidery machine, a multi-head embroidery machine and / or a sewing machine, without a large amount of machine work.
    To this end, the present invention proposes the method according to the subject matter of claim 1 and a device, in particular for carrying out the method, according to claim 10.
    Advantageous embodiments of the present invention are the subject of the respective dependent claims.
    The proposed method is characterized in that at least one loop stitch is generated on the fabric web at the respective embroidery location in that at least one loop mandrel can be moved at least parallel to the embroidery base and / or pivoted relative to the embroidery location in question and that in a first step, the respective embroidery needle at the respective embroidery point is embroidered with at least one loop or row of loops on the loop mandrel held in front of or on the embroidery base.
    The proposed device is characterized by at least one loop arbor, which is driven at least parallel to the embroidery base and / or pivoted relative to the embroidery site in question.
    Advantageously, the moss embroidery image to be achieved can thereby be generated in a simple manner by the respective embroidery needle embroidering the loop mandrel at the respective embroidery location with a plurality of loops or at least one row of loops, thereby anchoring the closed loop on the embroidery base becomes.
    The loops are formed around the pin-like loop mandrel. The loop mandrel is first embroidered on and then pulled out again, forming the loop.
    The well-known terry loop formation is done by its own tool, which is designed in the manner of a needle. After the loops have been completed, the loops can be separated as required.
    With the present invention, a novel method for forming terry loops is provided compared to the known weaving machines, because the fabric is thereby arranged directly on an embroidery floor. It is embroidered to the right and left of this tool, whereby the fabric is pulled away by the gate movement and the loop is created.
    Advantageously, there is preferably the possibility that the loops follow a certain pattern by not only moving the pin back and forth in an extended drive variant, but in particular also rotating it. This allows the loop to be created in any position and placed in any direction.
    Longer loops can also be generated. The height and size of the loop can be controlled so that there is a three-dimensional effect.
    In comparison to the known moss stitch, a special regularity is achieved by the new technology in that a pen-like placeholder is available, which is embroidered as a pen. This has the advantage that you make a normal stitch somewhere in the middle of the embroidery process, pull it out with the embroidery needle and move a pin-like loop mandrel to the fabric level on the needle side. This makes the pen a placeholder, which enables a regular loop size.
    The loop mandrel is preferably arranged on an independent drive, which is preferably independent of the needle drive, the thread guide or other elements of the embroidery frame. The drive is also preferably arranged on the side of the needle bed in a machine-fixed manner.
    The difference to the moss bite with which the method of the invention is related is that no stable loop formation can take place in the moss bite and the fixing of the loop in the embroidery base is only unstable.
    This results in the disadvantage that a loop generated by moss stitch can move in the free direction and due to the twist effect of the thread used in any direction, which leads to an uneven embroidery pattern.
    This is where the invention comes in, which makes a stable loop with a placeholder, namely a loop mandrel. In a preferred development of the invention, the loop formed in this way can be fastened to the floor with an additional stitch in the area of the loop base, so that there is a stable alignment of the loop formed in this way, which is thus fixed, is not subject to any twist and thus results in a uniform loop pattern .
    In a further advantageous preferred embodiment, the loop is fixed to the embroidery base with two stitches. You can cut them open with a simple tool. In the known terry loop, the entire thread is pulled out when the loop thread is pulled. This is not the case with the invention because the loop is firmly attached to the embroidery base on both sides.
    The advantage of the invention is therefore that a moss embroidery image can be generated easily by adding an additional loop-forming element, which was previously only possible with complex moss embroidery apparatus, without great machine outlay. A further advantage is that the - previously critical - thread balance of the front thread no longer plays a role and that even loops with the same direction can be generated with the advantageous method.
    An advantageous preferred device for carrying out the method accordingly comprises only a lifting device arranged on the machine side, which is preferably designed as a lifting and pivoting device, which can be raised and lowered on the needle bed and at the end of which at least one loop mandrel is arranged parallel to the Embroidery floor is slidable and / or pivotable.
    This results in the possibility that the lifting device is controlled by a control at a certain embroidery location in such a way that the at least one loop mandrel is brought into the area of the at least one embroidery needle in approximately parallel contact with the fabric web or at a short distance from the fabric web , and then the embroidery needle embroiders the loop mandrel in the manner of one or more loops and thus creates a loop tunnel defined by the cross section of the loop mandrel around the loop mandrel, which is anchored to the embroidery base with the embroidery needle. After the loop tunnel has been created, the loop mandrel is pulled out of the loop tunnel and the loop tunnel which has been created in this way - now empty - remains on the fabric web,
    In a first preferred embodiment, the respective embroidery site and the embroidery needle arranged there are each assigned a loop mandrel.
    In a preferred development of the invention, however, it can be provided that a single - now elongated - loop mandrel is assigned to several embroidery sites. Thus the loop tunnel can e.g. can be created at several embroidery points arranged one above the other in one operation.
    For the sake of simpler description, only a simple displacement movement of the loop mandrel is described in the following description, although it can also be designed to be pivotable and / or displaceable.
    It is important that the size of the loops can now be freely selected by the displacement movement (stroke) of the mandrel drive. Loops of different sizes can thus be created in a single embroidery process on an embroidery needle, depending on the extent to which the stroke of the mandrel drive for the loop mandrel is changed while the loop mandrel is embroidered. The loop mandrel can therefore also be removed from the fabric level by a certain distance during the process of embroidering with the front thread of the embroidery needle - which increases the diameter of the loops - or approximates the fabric level - which reduces the diameter of the loops. It can also be moved parallel to the fabric level while embroidering, which changes the orientation of the loops.
    As stated above, it is additionally possible to have a pivoting movement in addition to the displacement movement of the mandrel drive parallel to the embroidery base, which also provides additional possibilities for loop formation.
    Thus, different loop tunnels can be formed at a single embroidery site, which can have different sizes and directions.
    This results in a type of terry cloth with loose loops on the embroidery floor, which can be created in any geometric shapes, lines and orientations on the embroidery floor.
    In a preferred development it is provided that the loops protruding forward from the embroidery base of the previously made loop tunnel are cut open with an additional cutting knife, which results in loose loop thread halves which lead to a fluffy image of the embroidered embroidery base thus produced, as was previously the case was not yet known.
    In a further preferred development of the invention, it can be provided that the mandrel drive for the loop mandrel can also perform a rotational movement, so that the pivoting movement can also be assigned an additional rotational movement, which leads to the loops being in any orientation, d. H. can be anchored in any embroidery direction as a loop tunnel or as open loop thread halves on the embroidery base.
    Another advantage of the method and the device which is suitable for carrying out the method is that now, through the use of the embroidery needle which pierces through the embroidery base and produces the loop image, there is now also the preferred possibility that on the back the embroidered loops can be anchored on the fabric level. Such anchoring can, for. B. by a cross stitch, a chain stitch or by multiple stitches on the back of the embroidery floor in the fabric so that the individual loops of the loop tunnel can be set on the back of the fabric level, which results in a particularly stable loop pattern, which is just not corresponds more to the usual irregular moss stitch pattern according to the prior art.
    This results in very precise loop images, which can either be closed or opened, so that fonts or geometric patterns can be produced in a sharply defined shape and contour, which was not previously known.
    You can even design the loop sizes differently, so that there are loops of different heights above the fabric level, which can either be cut open or closed, so that there is even a 3D image above the embroidery base, which consists of closed loops or open ones Loop halves exist.
    Because of this 3D effect, there is a completely new look of embroidered fabrics, as it was not previously known and how they were not previously possible in moss embroidery.
    In a preferred development of the invention, it can be provided that, with the loop mandrel and its attachment, a cutting blade is additionally attached in parallel to the holder for the loop mandrel, which is - but not necessarily - part of the loop mandrel, so that with the embroidery of the loop mandrel, the cutting blade also comes into operation and now separates the previously closed row of loops and forms individual loop thread halves, which protrude from the embroidery base to the front.
    It is not necessary for the solution for the cutting blade to separate the row of loops in the middle. It can also cause an off-center separation, which means that the one loop thread on one side z. B. is shorter than the cut other loop thread on the opposite side of the same loop.
    In another preferred embodiment it can be provided that the cutting blade can also be designed as a separate cutting member which either runs after the loop mandrel and is driven separately from the loop mandrel.
    [0048] In a preferred embodiment, the cutting blade is made of a metal. In other preferred configurations, the cutting blade can also be made of ceramic, and instead of a mechanical cutting action, a contactless cutting action can also be carried out using a laser beam or an ultrasound.
    In a first preferred embodiment, it can be provided that the loop mandrel is designed as a mandrel-like pin attached to a holder on one side, the z. B. consists of a metal material, a ceramic material, a plastic material, a mix of these materials or a comparable rigid material which is not bendable. The material should be so strong that the loop mandrel can be easily pulled out of the loop tunnel.
    In a further preferred embodiment it can be provided that the loop mandrel clamped on one side is also bendable and z. B. consists of a pin-like, elastically bendable plastic material.
    In a third preferred embodiment it can be provided that the mandrel itself is now designed to be movable in a loop mandrel, i. H. movable in its holder. For example, it can be designed to be pivotable, displaceable or rotatable in its holder.
    This results in further, multiple possibilities for the formation of loop tunnels, because the bendability, the rotatability or the displaceability of the loop mandrel in its holder on the mandrel drive provide further possibilities for loop formation.
    In a preferred embodiment it can be provided that the loop mandrel is designed as a lost mandrel, which means that it remains as a sacrificial mandrel in the loop tunnel and is removed together with the fabric from the embroidery frame and delivered to a textile supplier. He can then z. B. washed out by washing out the fabric in the equipment shop, dissolved or smashed by ultrasound or other measures, which creates the empty loop tunnel in the interior and a separate device for holding a fixed loop mandrel on the machine.
    Such an arrangement with a sacrificial mandrel can, for. B. used in soutache embroidery.
    In another preferred embodiment, it can be provided that the loop mandrel is retained as a lost mandrel in the embroidery image and also fills the loop tunnel in a shaping manner when the material is used by the end user. In this variant it can be provided to design the loop mandrel aesthetically in a certain way, for. B. as a golden plastic thread, as a colored pen, as a profiled design element or the like.
    The object of the present invention results not only from the description of a preferred embodiment or from the subject of the individual claims, but also from the combination of the individual claims or preferred embodiments with one another.
    All information and features disclosed in the documents, including the summary, in particular the spatial design shown in the drawings, could be claimed as essential to the invention, insofar as they are new to the prior art, individually or in combination. The use of the terms “essential” or “according to the invention” or “essential to the invention” is subjective and does not imply that the features named in this way must necessarily be part of one or more patent claims.
    In the following, the invention is explained in more detail with reference to drawings showing exemplary embodiments. Further features and advantages of the invention which are essential to the invention emerge from the drawings and their description.
    [0059] The figures show:<tb> <SEP> Figure 1: schematically shows a partial section through an embroidery apparatus, in particular through a large embroidery machine with a side view of the needle side<tb> <SEP> Figure 2: an embodiment modified compared to Figure 1 for the displacement drive of the loop mandrel<tb> <SEP> Figure 3: a perspective front view of the large embroidery machine from the needle side with two different mandrel drives for driving the loop mandrel<tb> <SEP> Figure 4: a first process diagram for attaching a row of loops<tb> <SEP> Figure 5: the work step progressing compared to Figure 4<tb> <SEP> Figure 6: the work step progressing compared to Figure 5<tb> <SEP> Figure 7: the work step progressing compared to Figure 6<tb> <SEP> FIG. 8: schematically shows a modified embodiment of the process sequences according to FIGS. 4 to 7, showing a loop tunnel that is freely geometrically fixed on the embroidery base<tb> <SEP> Figure 9: the perspective view of the one cutting device which cuts open the loop tunnel<tb> <SEP> Figure 10: an enlarged view of the blade of Figure 9<tb> <SEP> Figure 11: a variant for changing the stroke of the loop mandrel in a first embodiment<tb> <SEP> Figure 12: the same variant in a second embodiment (with a large stroke)<tb> <SEP> Figure 13: the representation of the variable distance of the loop mandrel to the fabric plane (with a small stroke)<tb> <SEP> Figure 14: the same representation as Figure 13 with a large stroke<tb> <SEP> Figure 15: the representation of a flexible loop mandrel for the formation of geometrically distributed loop tunnels<tb> <SEP> Figure 16: a variant for fastening the loop mandrel in a first process step<tb> <SEP> Figure 17: the same representation as in Figure 16 in a second process step<tb> <SEP> Figure 18: a perspective view of a loop mandrel with an integrated cutting blade<tb> <SEP> Figure 19: an embodiment of the loop mandrel in a first embodiment<tb> <SEP> Figure 20: a second variant compared to Figure 19<tb> <SEP> Figure 21: a third variant compared to Figure 20<tb> <SEP> Figure 22: a further variant compared to Figure 21<tb> <SEP> Figure 23: another variant compared to Figure 22<tb> <SEP> Figure 24: a further variant compared to Figures 19 to 23<tb> <SEP> Figure 25: schematically shows a perspective view of a section of a multi-head embroidery machine according to a preferred embodiment<tb> <SEP> Figure 26: schematically shows a perspective view of a sewing machine with embroidery function according to a preferred embodiment.
    The large embroidery machine 1 according to one embodiment, which makes up a single-head embroidery machine, according to one exemplary embodiment, consists in the usual manner of an embroidery base which consists of an embroidery frame driven to be displaceable in the XY direction and into which the material to be embroidered is clamped. On one side are embroidery needles arranged, which can be moved through the needle plate and reach the shuttle side, where the shuttle thread is caught and pulled through the fabric again.
    In the exemplary embodiment according to FIG. 1, the large embroidery machine 1 is only shown with its needle-side embroidery cheek 2, on which a needle bed 3 is arranged.
    The fabric level 9 is arranged in front of the stitch plate 22, and on the left side of the stitch plate 22 the shuttle 8 with the shuttle, not shown, is arranged, with a thread cutting drive 16 for the shuttle thread is shown in Figure 1. The throat plate 22 is formed parallel to the embroidery base 34.
    In the illustrated embodiment, an embroidery site is shown with an embroidery needle 10, which is covered by a needle bed cover 15.
    There are also provided in a conventional manner presser paws 6, which are movable in an axis of rotation 5 to the embroidery base 34.
    To form loop tunnels, a loop mandrel 7 is provided in the exemplary embodiment shown, which is aligned in its longitudinal extent perpendicular to the longitudinal extent of the embroidery needle 10 and is designed to be displaceable approximately parallel to the direction of arrow 24 and displaceable by a mandrel drive 11 to the throat plate 22.
    For this purpose, the loop mandrel 7 is assigned a lifting device 4, which works with a mandrel drive 11.
    A pneumatic cylinder is advantageously arranged in the mandrel drive 11 and executes the displacement drive in the direction of arrow 24 (perpendicular to the plane of the drawing in FIG. 1). This is a possible embodiment, there being a large number of further drive options for the mandrel drive.
    The entire device including the mandrel drive 11 is arranged on the said lifting device 4 and works with a longitudinal beam 23, which is thus pivoted together with the lifting device 4 in the lifting directions 13 about the pivot bearing 14 of the lifting device 4.
    By actuating the lifting device 4, the loop mandrel 7 which is to be embroidered by the embroidery needle 10 can thus be brought into engagement with the embroidery site or out of engagement with the embroidery site.
    Part of the lifting device 4 is a fastening arm 12 which is fixedly connected to the needle bed 3.
    In FIG. 2, an expanded mandrel drive 17 is shown compared to FIG. 1, which is superior to the mandrel drive 11 for the pivoting movement.
    With the extended mandrel drive 17, the loop mandrel 7 can also perform an additional rotational movement which is superimposed on the direction of arrow 24 in the plane of the drawing in FIG. 1.
    FIG. 3 shows two different (possibly also alternatively or cumulatively) existing mandrel drives 11 and 17 at two different locations on a large embroidery machine, where it can be seen that a plurality of embroidery needles 10 arranged parallel to one another are provided on the needle bed 3, each form separate embroidery points. The expanded mandrel drive 11, 17 is now arranged at a specific embroidery location, wherein the lifting device can move both mandrel drives away from the embroidery location in the direction of arrow 13 or into the area of the embroidery location.
    In the exemplary embodiment shown, the approximately pin-like loop mandrel 7, which is clamped on one side, is arranged in the region of a round-shaped window 18 of a gear plate 19 and can thus be embroidered freely by the embroidery needle 10.
    In Figure 3, the different directions of movement of the loop mandrel 7 are shown, which can be done by the overlapping mandrel drives 11 and 17.
    The simple mandrel drive 11 causes the direction of displacement in the direction of arrow 24 for the loop mandrel 7 and the mandrel drive 17 performs the direction of rotation of the mandrel drive 17 and thus also the rotation of the loop mandrel 7, wherein a displacement movement in the direction of arrow 25 can also be provided.
    Overall, the loop mandrel 7 with two separate mandrel drives 11, 17 can move two-dimensionally parallel to the fabric plane 9 and still perform an additional rotational movement in the direction of arrow 26 about the needle axis of the embroidery needle 10.
    Figures 4 to 7 now show the continuous loop formation of a loop row 29 with the help of an embroidery front thread 28 which runs at the tip of the embroidery needle 10 in an eyelet.
    In the exemplary embodiment shown, the loop mandrel 7 is fastened in a holding plate 27 and is displaced in parallel to the embroidery base 34 in the arrow directions 24, 24 ′ by the mandrel drive 11, which is now shown in broken lines.
    4, the row of loops 29 is thus to the left of the embroidery needle, and a row of loops 29 has already been formed around the loop mandrel 7.
    In an alternative embodiment, it is also shown that instead of clamping the holding plate 27 to the mandrel drive 11, a pivoting movement in the arrow directions 43 could also take place.
    This is an alternative to the displacement movement 24 pivoting movement.
    By arranging such a pivoting movement 24 43, the loop size can also be varied as desired. This can also be generated by a shift movement.
    In the representation according to FIG. 4 it is shown that a lower row of loops 30 has already been formed, from which the loop mandrel 7 has already been pulled out, as a result of which an open loop tunnel 31 is formed.The loop tunnel 31 'is also shown with the loop mandrel 7 retracted there.
    The embroidery needle is moved in the arrow directions 32 into the fabric plane and out of the fabric plane.
    In the transition from FIG. 4 to FIG. 5, the embroidery needle 10 is pulled out of the embroidery base 34 and in the transition to FIG. 6 the embroidery needle now enters the embroidery base 34 again in the direction of arrow 32, but this time to the left of the loop mandrel, as shown in FIG Figure 7 is shown. So that the loop mandrel was embroidered with a closed loop, the bottom of which is fixed in the embroidery base 34.
    More precisely, the embroidery needle cannot be moved in the arrow directions 24, 24 ', but rather the holding plate 27 for the loop mandrel, so that the representation that the embroidery needle is to the right or left of the loop mandrel 7 is on the movement drive 11, 17 of the loop mandrel relates and not to a drive of the embroidery needle 10.
    The invention is not limited to the fact that the longitudinal axis of the loop mandrel 7 is perpendicular to a connecting line through all needle tips. Any angle can be provided, which means that the longitudinal axis of the loop mandrel 7 is also in an inclined position above the embroidery base 34 and thus the loop pattern can also be designed accordingly, which means that the loop tunnels need not consist of concentric, mutually aligned loops , but the individual loops can narrow conically or expand conically.
    In FIGS. 4 to 7 it can also be seen that in FIG. 4 the stitch 35 takes place to the right of the loop mandrel 7, while the stitch of the embroidery needle 10 now causes a stitch 36 to the left of the loop mandrel due to the displacement movement of the holding plate 27 in the direction of arrow 24 ' 7 performs.
    FIG. 8 shows an embodiment which is expanded compared to FIGS. 4 to 7, in which the holding plate 27 is not only pivotable in the direction of the arrows 24, 24 ', but can also perform a rotational movement in the direction of rotation 26. This is accomplished by the extended mandrel drive 17 for the rotational movement in the direction of arrow 26.
    [0091] Thus, as shown in FIG. 8, a plurality of rows of loops 30 can form a loop pattern 37 on the embroidery base 34 and the loop tunnel 31 can be closed in the process.
    In another embodiment, which will be described later, it can be provided that there are no closed loop tunnels 31, but these are opened by a cutting device and then form individual loop threads 41 protruding from the embroidery base.
    Figures 9 and 10 show a first embodiment of such a cutting device, which is attached directly to the loop mandrel 7 on the holding plate 27, wherein a cutting blade 38 is attached to the holding plate 27 parallel to the loop mandrel 7.
    This cutting blade 38 also engages in the loop tunnel 31 together with the loop mandrel and is included in the loop tunnel 31 as in the exemplary embodiments according to FIGS. 4 to 7.
    FIG. 10 shows an enlarged example of such a cutting blade with an oblique cutting edge 39, with the entire gate moving either in the direction of the arrow 33 downwards or in the direction of the arrow 33 'when the holding plate 27 is stationary, which leads to the rows of loops 29 are separated and thereby form loosely projecting loop threads 41 along the cutting plane 42.
    This results in a fleece embroidery pattern on the fabric level, it can be provided in a further development of the invention that on the rear side of the fabric level 9, i. H. that is, beyond the embroidery base 34 (on the shuttle side), fixing stitches 44 are provided in order to provide additional fixing of the rows of loops 29 or the cut loop threads 41 on the embroidery base 34.
    Figures 11 to 18 show alternative embodiments, all of which are intended to be encompassed by the inventive concept of the invention.
    In combination with the previously mentioned exemplary embodiments, they can be seen in any combination or even on their own as advantageous embodiments.
    FIG. 11 shows the formation of a relatively small-volume row of loops 29, where it can be seen that the loop mandrel 7 can be shifted into its position 7 'by a displacement movement 24 and defines the coordinates X, Y and Z with respect to the material plane 9 will.
    FIG. 12, on the other hand, shows the formation of a large-volume loop 29 with an increased stroke movement of the loop mandrel 7, 7 'by an increased displacement movement in the arrow directions 24, which results in a large-volume row 29 of loops.
    It can thus be seen that, due to the displacement movement of the holding plate 27, the loop mandrel 7 can be brought into different displacement positions 7, 7 '.
    The formation of the length of the loop row 29 depends on that of the path length of the displacement movement 24.
    FIGS. 13 and 14 show that the loop mandrel 7 can also have a variable distance in the Z plane from the fabric plane 9.
    The fabric plane is shown in FIG. 13 with the reference number 9 and in FIG. 13 a relatively small distance between the loop mandrel 7 and its loop rows 29 is shown, which lead to a relatively narrow distance of the loop tunnel 31 in front of the fabric plane 9.
    FIG. 14 shows the alternative embodiment in which the loop mandrel 7 is at a relatively large distance from the fabric plane 9, which results in large-volume rows 29 of loops which protrude high above the fabric plane 9 and which can either be uncut or cut.
    Due to the movement drive of the loop mandrel, it is even possible to center the individual rows 29 of loops lying one above the other and to align them one above the other, because in the engagement position shown in FIG. 14, the loop mandrel 7 could still be moved to the left to all loops to align to the same extent in alignment and thus to create a particularly uniform loop pattern.
    FIG. 15 shows as a further embodiment that it is not necessary to choose a rigid loop mandrel 7. Instead, a loop mandrel 7 "can be used, which is designed to be flexible, which is movably driven in the direction of the arrow 24 shown, and due to the flexibility of the loop mandrel 7", narrower loop curves or loop tunnels 31 can be formed, which is not absolutely possible with a rigid loop mandrel.
    In the general description, it was already pointed out that the loop mandrel 7, 7 "can also be designed as a lost loop mandrel, ie it could also remain in such a loop tunnel 31, and either washed out during the subsequent processing of the material so equipped , mechanically removed or even remain in the loop tunnel 31. This corresponds to a sacrificial mandrel that remains - at least temporarily - in the loop tunnel.
    FIG. 16 shows that the loop mandrel 7 ″ can also be clamped in a rotary bearing 45 on the holding plate 27 (not shown), so that there is the possibility that the loop mandrel 7 ″ in the XY plane can be placed in front of the fabric plane 9 is movably driven. It can also be rotated in the arrow directions 26 around the longitudinal axis of the embroidery needle 10, which leads to a particularly peculiar loop pattern of the loop row 29.
    Accordingly, Figure 17 shows that the entire holding plate in front of the fabric plane 9 also by an angle of z. B. 90 or 180 ° can be rotated, whereby the previously shown loop mandrel 7 "'can be rotated with its rotary bearing 45 through a rotation angle of 90 ° around the embroidery needle 10, whereby striking changes in direction of the loop row 29 can be realized.
    FIG. 18 shows that the loop mandrel 7 can be physically connected to a cutting blade 38, so that after the formation of the loop row 29 and the loop tunnel 31 produced thereby, a displacement movement of the displacement drive of the loop mandrel leads to the separation of the self-contained loop rows 29 , as a result of which separate loop threads 41 are then formed.
    Figures 19 to 24 show different ways of attaching a loop mandrel according to all the aforementioned embodiments in one device. All of the exemplary embodiments should enjoy protection on their own or in any combination with one another.
    In the exemplary embodiment according to FIG. 19, it is shown on the left in section and on the right in plan view that the loop mandrel 7 is in its middle position in front of the embroidery needle 10 and can move either to the left or to the right of the embroidery needle, so that the self-contained one To form a row of loops 29.
    The loop mandrel 7 is part of a bearing ring 46 and is integrally connected to this.
    The bearing ring 46 carries a radially outwardly directed external toothing 47, which meshes with a suitable counter gear or pinion, so as to enable rotation of the bearing ring 46 about its axis of rotation, which corresponds to the direction of rotation 26 in FIG.
    [0116] FIG. 20 shows that the loop mandrel 7 can also be held interchangeably in a holder 48 of the bearing ring 46.
    Figure 21 shows that the loop mandrel 7 can also be made in one piece with the bearing ring 46 and z. B. can consist of a chromed metal part, a sintered part or from a plastic metal mixture which is hardened.
    FIG. 22 shows that the loop mandrel 7 can also be held interchangeably in the bearing ring 46 in an insertion pocket 49 and can be fixed there in any way via an oversize or plug connection.
    [0119] FIG. 23 shows a rotary lock for holding the loop mandrel 7 in the bearing ring 46, which can be fixed in the manner of a bayonet rotary lock in the bearing ring 46. Thus, an open-close movement results either in the detachment of the loop mandrel 7 from the bearing ring 46 or in the fixing thereof.
    FIG. 24 shows that the bearing ring 46 with the loop mandrel 7 integrated therein can be designed as a sintered part and can be fixed in an outer ring 50, specifically by means of an adhesive connection 51, the correct position assignment between the bearing ring 46 and the outer ring 50 is ensured by positioning cam 52.
    FIGS. 25 and 26 show further alternative exemplary embodiments of an embroidery apparatus in the form of a multi-head embroidery machine, as shown in FIG. 25, and in the form of a single-head embroidery machine designed as a sewing machine with an embroidery function, as shown in FIG. 26. Multi-head embroidery machines and sewing machines with an embroidery function are well known, for which reason a detailed description of the equipment and mode of operation is dispensed with, since their usual equipment and general mode of operation do not constitute an essential feature of the present invention.
    Common to both of the alternative preferred exemplary embodiments shown is that at least one horizontally arranged embroidery frame or embroidery holder with an embroidery base 34 is provided, which one or more embroidery needles 10 is arranged opposite and movable in the direction of the embroidery base 34 for embroidering the same. are. The embroidery needle 10 or the embroidery needles 10 are each assigned to an embroidery head 53, which comprises drive means for driving the embroidery needle 10 or the embroidery needles 10. The respective embroidery head 53 is assigned a device with a loop mandrel 7, which is held in a linearly displaceable and / or rotatable manner by a mandrel drive 11, 17 assigned to the device. According to these preferred exemplary embodiments, the device is arranged on the respective embroidery head 53. According to an alternative embodiment, not shown, the device can be arranged away from the embroidery head 53, for example on an embroidery machine frame or on an additional apparatus, in such a way that the loop mandrel 7 can be positioned adjacent to the embroidery needle 10 or the embroidery needles 10, in such a way according to one or more of the above-described exemplary embodiments, to enable the interaction between loop pin 7 and embroidery needle 10. Thus, the device can optionally and / or additionally be arranged on the embroidery apparatus, with which existing, for example older, embroidery apparatuses can also be equipped with a loop mandrel in a simple manner in order to be able to form a special loop pattern as described above in front of the nitrogen material level.
    It is thus particularly advantageous in the invention that it is now possible for the first time through relatively simple device measures and a method that is simple to carry out, to form a special loop pattern in front of the nitrogen material plane without great expenditure on machinery, wherein either open or closed loops can be formed .
    It is not necessary for the solution that the fabric threads formed from the open loops have the same length.
    In addition to an ornamental effect described by the loop formation according to the present invention, there are also several practical applications. For example, in an alternative application it is possible not to form the illustrated loops 29 with the loop tunnels 31 from a textile material, but rather to use electrically conductive loop threads, which can form electrical electrodes either as closed rows of loops 29 or as cut loop threads 41 when using a nitrogen so prepared, when worn on the body act as skin electrodes and can derive electrical potentials from the skin surface.
    An electrode pad formed therefrom would then be worn at a first location on the body, the electrode pad with the closed or open loops deriving a first potential, while on the second body location remote therefrom there is another electrode pad which is used to derive the opposite potential suitable is.
    Thus, skin-relevant electrical potentials can be derived with the loop tunnels made of the electrically conductive type and the sensor pads formed therefrom, e.g. Heart signals (EKG), muscle signals (EMG or EOG) or brain waves (EEG) and other physiological parameters that can be derived from the surface of the body.
    Drawing legend
    1 large embroidery machine (single head embroidery machine) 1 'sewing machine (single head embroidery machine) 1 "multi-head embroidery machine 2 embroidery cheek (needle side) 3 needle bed 4 lifting device 5 rotation axis (fabric presser) 6 fabric presser paw 7 loop pin, 7', 7", 7 "'8 shuttle web 9 fabric level 10 Embroidery needle 11 mandrel drive (from 7) for sliding movement 12 fastening arm 13 lifting direction 14 rotary bearing 15 needle bed cover 16 thread cutting drive 17 mandrel drive for rotational movement 18 window (for 7) 19 gear plate 20 swivel gear 21 needle clamp ring 22 needle plate 23 side member (for lifting device 4) 24 direction of arrow (for mandrel drive 11), 24 '25 arrow direction (for mandrel drive 17) 26 direction of rotation (for mandrel drive 17) 27 holding plate 28 embroidery front thread 29 row of loops (with mandrel) 30 row of loops (without mandrel) 31 loop tunnel 31' (upper) 32 arrow direction (embroidery needle 10 ) 33 Direction of travel (creel), 33 '34 Embroidery base 35 stitch (right) 36 stitch (left) 37 loop pattern 38 cutting blade 39 Cutting edge (of 38) 41 Loop thread 42 Cutting plane 43 Alternative swivel movement (for 24) 44 Fixing stitch 45 Pivot bearing 46 Bearing ring 47 External teeth 48 Bracket 49 Insert pocket 50 Outer ring 51 Adhesive connection 52 Positioning cam 53 Embroidery head
    权利要求:
    Claims (15)
    [1]
    1. Method for operating an embroidery apparatus, in particular a single-head embroidery machine such as a large embroidery machine (1), for example a shuttle embroidery machine, or a sewing machine with an embroidery function (1 '), or a multi-head embroidery machine (1 "), in which embroidery apparatus at least one embroidery frame / holder and a number of the embroidery points associated with this at least one embroidery frame / holder are arranged so as to be displaceable in the direction of an embroidery base (34) held by the at least one embroidery frame / holder, and drive means for driving the at least one embroidery frame / holder and the embroidery points , and a control unit for controlling the at least one embroidery frame / holder are provided,characterized in thatat least one loop stitch on the fabric web (9) is produced at the respective embroidery site in that at least one loop mandrel (7, 7 ', 7 ", 7"') is displaceable and / or pivotable at least parallel to the embroidery base (34) relative to the relevant embroidery site is brought up to this, andin a first step, the respective embroidery needle (10) at the respective embroidery site, the loop mandrel (7, 7 ', 7 ", 7'") held in front of or on the embroidery base (34) with at least one loop or row of loops (29, 30, 31, 31 ') embroidered.
    [2]
    2. The method according to claim 1, characterized in that in a second step the at least one loop mandrel (7, 7 ', 7 ", 7'") is pulled out of the loop or the row of loops (29, 30, 31, 31 ') .
    [3]
    3. The method according to claim 1, characterized in that in a second step, the at least one loop mandrel (7, 7 ', 7 ", 7'") remains in and in the loop or the row of loops (29, 30, 31, 31 ') a third step is released from its holder (45, 46, 48, 49).
    [4]
    4. The method according to any one of claims 1 to 3, characterized in that a loop mandrel (7, 7 ', 7 ", 7'") is assigned to only one embroidery site.
    [5]
    5. The method according to any one of claims 1 to 3, characterized in that a loop pin (7, 7 ', 7 ", 7'") is assigned to several embroidery sites together.
    [6]
    6. The method according to at least one of the preceding claims 1 to 5, characterized in that a lifting device (4) assigned to the loop mandrel (7) is controlled at a specific embroidery location by a control such that the at least one loop mandrel (7, 7 ', 7 ", 7" ') is brought into the area of the at least one embroidery needle (10) in approximately parallel contact with the fabric web (9) or at a short distance from the fabric web (9).
    [7]
    7. The method according to any one of claims 1 to 6, characterized in that the at least one embroidery needle (10) embroiders the loop mandrel (7, 7 ', 7 ", 7"') in the manner of one or more loops and thus one through the Cross section of the loop mandrel (7, 7 ', 7 ", 7'") and / or movement drive of the loop mandrel (7, 7 ', 7 ", 7'") defined loop tunnel (29, 30 31, 31) around the loop mandrel (7 , 7 ', 7 ", 7'") which is anchored with the embroidery needle (10) on the embroidery base (34).
    [8]
    8. The method according to any one of claims 1 to 7, characterized in that the loop mandrel (7, 7 ', 7 ", 7"') is movable by means of a mandrel drive (11), the stroke of the mandrel drive (11) for the loop mandrel ( 7, 7 ', 7 ", 7"') is changed while embroidering the loop mandrel (7, 7 ', 7 ", 7'").
    [9]
    9. The method according to any one of claims 1 to 8, characterized in that the loop row (29, 30, 31, 31 ') fixed on the embroidery base (34) is fixed on the shuttle side with at least one fixing stitch.
    [10]
    10. Device on an embroidery apparatus, in particular on a single-head embroidery machine such as a large embroidery machine (1), for example a shuttle embroidery machine, or a sewing machine with an embroidery function (1 '), or a multi-head embroidery machine (1 "), in which embroidery apparatus at least one embroidery frame / holder and a number of the embroidery points associated with this at least one embroidery frame / holder are arranged so as to be displaceable in the direction of an embroidery base (34) held by the at least one embroidery frame / holder, and drive means for driving the at least one embroidery frame / holder and the embroidery points , and a control unit for controlling the at least one embroidery frame / holder are provided, characterized in that the device has at least one loop mandrel (7, 7 ', 7 ", 7"') which can be moved at least parallel to the embroidery base (34) and / or is pivotally driven relative to the embroidery site in question.
    [11]
    11. The device according to claim 10, characterized in that the loop mandrel (7, 7 ', 7 ", 7'") consists of a free-standing pin or mandrel clamped on one side on a lifting device (4).
    [12]
    12. Device according to one of claims 10 to 11, characterized in that the loop mandrel (7, 7 ', 7 ", 7"') with a cutting device (38, 39) for separating the closed row of loops (29, 30, 31, 31) ') connected is.
    [13]
    13. Device according to one of claims 10 to 12, characterized in that a mandrel drive (11) for driving the loop mandrel (7, 7 ', 7 ", 7'") is provided, the stroke of the mandrel drive (11) for the loop mandrel (7, 7 ', 7 ", 7'") can be changed while embroidering the loop mandrel (7, 7 ', 7 ", 7'").
    [14]
    14. Device according to one of claims 10 to 13, characterized in that the mandrel drive (11) for the loop mandrel (7, 7 ', 7 ", 7'") performs a rotational movement
    [15]
    15. Device according to one of claims 10 to 14, characterized in that the device is suitable for carrying out the method according to at least one of claims 1 to 9.
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    同族专利:
    公开号 | 公开日
    DE102018128529A1|2020-05-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE497174C|1928-08-14|1930-05-05|Vogtlaendische Maschinenfabrik|Device for the production of moss embroidery on gate embroidery machines|
    DE19860770C2|1998-12-30|2002-11-28|Saurer Sticksysteme Ag Arbon|Method and device for guiding a fabric web on a large embroidery machine|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102018128529.9A|DE102018128529A1|2018-11-14|2018-11-14|Method and device for producing a loop stitch on a large embroidery machine|
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