CH711458A2 - Ship embroidery machine with shuttle and improved embroidery. - Google Patents

Abstract

Shuttle embroidery machine with shuttle guide and improved embroidery image, wherein the embroidery needle (5) pull the needle thread (front thread 6) through the embroidery bottom (fabric plane) and form a loop on the back, which can be passed by the shuttle (10), and the shuttle (10) includes a back thread, which can be guided through the loop formed by the embroidery needle (5) and thereby engulf the two thread systems, wherein in the region of a shuttle track (2) a needle channel (4) which transverses the shuttle track (2) is provided in the transverse direction, in which the embroidery needle is driven to oscillate, wherein to avoid needle-side thread tension peaks, which arise when the needle thread (6) snaps onto the rear of the shuttle (14), it is provided that the shuttle track (2) is arranged in the inlet area (46) in front of the needle channel (4 ) has a lowered exemption (30), which extends below the level of the shuttle.

Description

The invention relates to a shuttle embroidery machine with shuttle guide and improved embroidery image according to the preamble of claim 1.

In large embroidery machines, the Schiffchenführungen are summarized in a Stöckli and each Schiffchenführung consists essentially of a guide body, which is usually made of plastic, on each of which a shuttle is arranged, which is usually made of a metal material.

The boat is slidably driven in the longitudinal direction on the shuttle and contains in a known manner a coreless coil (Bobine) with the shuttle thread (back thread).

It is known to interrupt the shuttle trajectory in the transverse direction through a needle channel, which is open in the direction of the shuttle. The embroidery needle moves into the needle channel in a direction perpendicular to the direction of movement of the shuttle in and out again.

The embroidery needle transports in this process the needle thread (front thread) into the needle channel and forms during the return stroke (the retraction from the needle channel) a loop through which the boat is passed so as to devour the shuttle thread with the needle thread.

When passing through the shuttle through the loop formed from the needle thread, the shuttle moves in the longitudinal direction of the shuttle until the boat back approximately coincides with the upper boundary of the needle channel and thus releases the entire needle channel again, from which the entanglement then Direction is drawn to the substance level.

During the movement of the shuttle back even before reaching the transverse needle channel is formed at the Schiffchenrücken an encircling.

Before the Schiffchenrücken the shuttle has reached the right side of the needle channel, formed on the Schiffchenrücken a looping of the needle thread and the boat is driven further in the direction of the needle channel. The loop formed at the back of the shuttle with the needle thread forms a residual loop.

In the prior art, there was the disadvantage that it could not be ensured that the residual loop applied to the shuttle back under the tension of the needle thread could be safely pulled under the shuttle to be drawn into the needle channel under the action of the needle thread tension.

This problem is described in DE 331 546 B. However, it is only focused on the fact that the shuttle runs as straight as possible. However, a remedy of the problem described below is not mentioned.

In many cases, it happens that the rest of the loop gets stuck on the back of the shuttle and therefore there is an inadmissible increase in the thread tension of the needle thread, which is undesirable.

Such yarn tension peaks, which are caused by sticking of the needle thread on the back of the shuttle, affect the quality of the embroidery image. The thread tension adversely affects the last formed stitch knot because it has been formed under excessive thread tension, thereby affecting the overall appearance of the embroidered fabric.

Another disadvantage is that with a stuck thread there is a risk that the needle tip of the embroidery needle with the stuck thread in the needle channel in collision, runs up on this punctures or even severed.

As a result, there is a risk that the needle thread tears itself or gets under such high voltage that the embroidery image is adversely affected by this undesirable state.

The entanglement between the needle thread and the shuttle thread is uneven due to this adverse phenomenon and leads to a troubled and unclean embroidery image.

The quality of the embroidery is measured by how the thread distribution at the back is and in such unwanted phenomena, the stitch image is adversely affected at the fabric back.

The invention is therefore the object of developing an embroidery machine with shuttle guide of the type mentioned so that an improved, high-quality embroidery image is generated.

To solve the problem, the invention is characterized by the technical teaching of claim 1.

Feature of the invention is that in a first preferred embodiment, the shuttle trajectory in the inlet region in front of the needle channel has a lowered exemption, which extends below the level of the shuttle and frees the shuttle trajectory in this area.

In a preferred embodiment, therefore, the inlet region of the shuttle web, formed by the fact that the Schiffchenrücken, which extends in a certain position to over the needle channel away, is released in the direction of the needle channel.

This exemption makes it possible for the first time to pull the needle thread back without unwanted tensile stresses in the needle channel, without the risk that the remaining loop of the needle thread gets caught on the shuttle back and thereby undesirable thread tension increase during the state of pulling the Residual loop in the needle channel is created.

In a first embodiment of the invention, it is provided that the exemption is formed as an inclined plane, which is part of the Schiffchenbahn. This oblique plane extends below the level of the Schiffchenbahn and opens into the one side edge of the needle channel.

Due to the arrangement of such an oblique plane, therefore, the tread of Schiffchenbahn is interrupted and modified by the exemption shortly before the needle channel, which has the advantage that the pulling in of the remaining loop is facilitated in the needle channel, because the fallen-down rest no longer on Schiffchenrücken can get stuck. The rest of the loop glides undisturbed by Schiffbildrücken in the exemption and is drawn in because of the inventive exemption without problems and without unwanted yarn tension maxima in the needle channel.

Instead of forming an exemption as an inclined plane that extends below the shuttle track plane, there are alternative embodiments, which are also claimed as essential to the invention. Instead of forming the clearance as a slope, namely as a sloping towards the needle channel level, it is also possible to provide a step level, i. an exemption, which forms a plane parallel to the shuttle trajectory, which is arranged below the shuttle track.

In another, third embodiment, it may be provided that such a lowered plane is also only partially arranged on the Schiffchenbahn, i. does not extend over the entire transverse direction of the shuttle, but only over part of the shuttle.

In a fourth embodiment it can be provided that the exemption is formed as a lowered, spherical plane, i. E. it lowers both in the career direction of the Schiffchenbahn, as well as in the transverse direction.

The invention is not limited to the arrangement of even planes as exemptions. These planes may also be contoured, e.g. cambered or convex or concave shaped.

Accordingly, it may also be any free-form surfaces which can be described in such a way that, starting from a transverse edge, which is located at a certain longitudinal distance in front of the right boundary of the needle channel, an exemption is arranged.

This exemption should therefore lead into the needle channel without the risk that - as in the prior art - the rest of the loop either gets stuck on the back of the boat or in the intermediate region between the bottom of the shell of the shuttle and the surface of the shuttle. The shuttle is therefore released according to the invention in this area.

The length of the release in the direction of the longitudinal axis of the Schiffchenbahn, starting from the inlet into the needle channel should be chosen so that it corresponds to the distance of the Schiffchenhecks from the lower channel edge at the time of falling of the loop from Schiffchenrücken.

Thus, the retraction of the residual loop in the needle channel is much easier, because a clinging of the rest of the loop on the back of the shuttle is no longer to be feared.

The time depends on the relative interaction of the shuttle speed on the shuttle track and the thread guide. Namely, the thread guide pulls the needle thread back to the cloth front and the time when the thread guide does so, determines the time when the rest loop falls from the back of the shuttle.

This typically takes place when the shuttle rear is about 5-6 mm in front of the right boundary of the needle channel.

In a further development of the present invention, it can also be provided that the shuttle track enters straight into the needle channel, i. E. the exemptions according to the invention on the side of the shuttle can be dispensed with, but that the exemptions according to the invention mentioned in relation to the shuttle are now arranged on the rear and underside of the shuttle.

Here, too, separate protection for the formation of the rear shell of the boat is claimed on the bottom side, because even by the arrangement of one or more exemptions in this area a relief of the withdrawal of the residual loop is made possible.

The invention is therefore not limited to the arrangement of an inclined plane on the Schiffchenrückseite (bottom side).

Instead of an inclined plane, all previously mentioned exemptions, which were described according to the invention on the shuttle side, can also be arranged on the bottom side of the shell of the shuttle. The invention also relates to a combination of both embodiments.

In a further development of the invention, it may also be provided that the shuttle travels straight and without exemption in the needle channel and also the bottom of the boat shell is straight, but nevertheless the shuttle rear side is provided with a sliding edge which is the immersion of the fallen Remaining loop in the needle channel at the Schiffchenrückseite facilitates.

Of course, all the aforementioned embodiments, whether it be exemptions on the shuttle side and / or exemptions on the bottom side of the shuttle shell and / or sliding radii on the shuttle back are combined with each other in any way. There are therefore claimed all possible combinations between exemptions on the shuttle, exemptions on the bottom side of the boat sole or even sliding radii on the back of the shuttle as essential to the invention.

The subject of the present invention results not only from the subject matter of the individual claims, but also from the combination of the individual claims with each other.

All disclosed in the documents, including the summary information and features, in particular the spatial design shown in the drawings, are claimed as essential to the invention, as far as they are new individually or in combination over the prior art.

As far as individual items are designated as "essential to the invention" or "important", this does not mean that these items necessarily have to form the subject of an independent claim. This is determined solely by the current version of the independent claim.

In the following the invention will be explained in more detail with reference to drawings showing only one embodiment. Here are from the drawings and their description further features essential to the invention and advantages of the invention.

Show it:

[0044] <Tb> FIG. 1: <SEP> Perspective a schematic representation of the Schiffchenbahn with a slidably driven shuttle before reaching the needle channel <Tb> FIG. 2: <SEP> The same view as FIG. 1, in which the boat passes over the needle channel and forms the needle thread loop <Tb> FIG. 3: <SEP> The position of the shuttle with the shuttle back just before reaching the right boundary of the needle channel with the remaining loop formed on the shuttle back <Tb> FIG. 4: <SEP> An enlarged view of the arrangement according to FIG. 3 according to the prior art <Tb> FIG. 5: <SEP> A plot of the thread tension over the time axis with the representation of the thread tension course according to the prior art and according to the invention <Tb> FIG. FIG. 6: The illustration according to FIG. 4 in the section schematically with further details according to the prior art <Tb> FIG. 7: <SEP> A perspective view of the shuttle rear on the shuttle of the invention <Tb> FIG. 8: Schematic arrangement according to FIG. 7 in side view <Tb> FIG. 9: <SEP> Top view of the arrangement according to FIG. 8 <Tb> FIG. 10: <SEP> The embodiment of the release according to FIGS. 7 to 9 <Tb> FIG. 11: <SEP> A second embodiment of the release on a shuttle <Tb> FIG. 12: <SEP> A third execution of an exemption on the shuttle <Tb> FIG. 13: <SEP> A fourth execution of an exemption on the shuttle <Tb> FIG. 14: <SEP> An embodiment modified from the aforementioned embodiments, in which one of the exemptions of FIGS. 10 to 13 is arranged on the bottom side of the shell of the shuttle <Tb> FIG. FIG. 15: An embodiment modified with respect to FIG. 14 with a rounded back of the shuttle, on the bottom side of which a sliding radius is arranged <Tb> FIG. 16: <SEP> Schematics the timing of the drop of the remaining loop on the back of the shuttle, showing the release and its effect

In Fig. 1, a guide body 1 is generally shown, which preferably consists of a plastic material on which a shuttle track 2 is arranged, which preferably consists of a metal material. The shuttle 2 serves as a running surface for a shuttle 10 driven on the shuttle 2, which is driven in the direction of the arrow 8 and in the opposite direction.

The guide body 1 is preferably made of a plastic material and has a rear attachment foot 3. The guide body 1 is also referred to as a "finger" and each four guide body 1 are arranged in a block and form a Stöckli.

In the drawing of Fig. 1, a needle thread 6 is formed by the immersion of the embroidery needle 5 in the needle channel 4, characterized in that a loop 7 is formed when retracting the embroidery needle 5 in the direction of arrow 13.

1, the shuttle 10 is driven in the direction of arrow 8 and passes through the loop 7 thus formed, which slides over the top surface of the shell 11 of the shuttle 10 and in the direction of arrow 42 to the rear and the Schiffchenrückseite 14 on the shuttle 2 falls.

2, the fabric plane 45 is indicated, which coincides approximately with the plane of the paper of FIG.

The back side of the fabric is accordingly the drawing page of the paper plane in FIG. 2. The paper plane of Fig. 2 forms the back of the fabric layer 45 and on the back of the drawing plane of FIG. 2, the stitch image would be visible.

During the transition from the sequence of movements in FIG. 2 according to FIG. 3, it can be seen that the loop 7 should drop down as far as possible from the rear of the shuttle 14.

After the loop size 7 in Fig. 2 is greater than the residual loop 7, which results in Fig. 3 because of the drawing of the needle thread, it is free of tension and the residual loop 7 is now to be drawn into the needle channel 4.

Fig. 4 shows such an operation in an enlarged view according to the prior art. It can be seen that the remaining loop 7 could get stuck on the rear of the shuttle 14, because the loop 23 formed there at the Schiffchenrückseite 14 a frictional resistance or inhibition finds or the Schiffchenrückseite is straight or not designed as a sliding radius, so that the risk exists that retraction of the residual loop 7 in the direction of the needle channel 4 is hindered.

This process is shown in Fig. 5, wherein in Fig. 5, the thread tension over the time of the invention and the prior art is shown.

A first maximum curve 15 of the thread tension results when the thread begins to fall from the back of the shuttle down, as shown in Fig. 2.

At position 16, the thread has only a small thread tension, because it comes in the position of FIG.

Now, the prior art shows that when snagging the residual loop 7, at the Schiffchenrückseite 14 to an undesirable second maximum curve 18, which is to be prevented in any case and suffer from the prior art arrangements.

The second maximum curve 18 is formed only when the rest loop 7 hangs on the Schiffchenrückseite 14 and there is still the risk that in this undesirable voltage curve as shown in FIG. 6 in the needle channel 4 protruding thread length 28 through the Nadelöhr 25 passes through, is damaged by the needle tip 9.

Therefore, it comes to a spiking of the needle thread or even to a perfect transection.

Incidentally, FIG. 6 shows that the wrap-around 23 in the illustrated position should now fall completely off the underside of the shuttle, but this does not happen.

The bottom edge 22 of the shell 11 of the shuttle 10 has no distance from the plane of the shuttle 2 and a separation of the loop 23 takes place only at the entry point 24 in the right boundary 47 of the needle channel 4, whereby only a short distance 48 is overcome.

Characteristic of the prior art is therefore that a relatively large thread length 27 must be accepted as a detachment of the wrap from the Schiffchenrückseite 14, because only a complete retraction of this detached thread length 27 in the entry point 24 just before the right boundary 47 happens in the needle channel 4.

According to the invention, this long thread length 27, which obstructs the detachment process of the rest loop 7, will now be significantly shortened.

Namely, if a slack of the residual loop T avoided according to the prior art (Fig. 6), then the second curve maximum 18 is avoided and instead runs the first maximum curve 15 in a straight line and that of the position 16 on the position 17 directly into the position 19, where after the position 19, the third maximum curve 20 follows.

The third curve maximum 20 according to the prior art and the invention is achieved when the thread has been pulled completely to the front and stretched again.

5, there is the advantage of the invention, where it can be seen that the second maximum curve 18, which is due to an unwanted snagging of the wrap 23 on the Schiffchenrückseite 14 is now avoided according to the invention.

The needle thread 6 is pulled out as shown in FIG. 3 in the direction of arrow 12, and at the same time with the retraction movement in the direction of arrow 13 of the embroidery needle 5. This is shown in Fig. 3.

In the diagram of FIG. 5 then follows another cycle, which is followed at position 21. A perfect cycle lasts about 100 milliseconds, while the diagram shows only the first 50 milliseconds of such a cycle.

Fig. 6 also shows that after passing through the thread length 28 through the needle eye 25 another thread piece 26 connects, which disappears in the needle channel and is represented by the circle shown in Fig. 6 with a cross that it is is an arrow direction perpendicular to the drawing plane.

7 to 9 now show a first preferred embodiment of the invention, where it can be seen that in the inlet region 46 of the shuttle 2 in the direction of the right boundary 47 of the needle channel 4, an exemption 30 is arranged, which in the embodiment shown is formed as an inclined surface with a linear reduction in the direction of the right boundary of the needle channel 4.

Accordingly, this inclined surface has a straight-line inclination 36 in the direction of the right-hand boundary 47 of the needle channel 4.

It is thus defined an obliquely opening into the needle channel inlet region 46, which facilitates a retraction of the residual loop 7 in the needle channel 4 substantially. The right boundary of the exemption 30 in the transverse direction to the shuttle runway is indicated by the transverse edge 38.

However, the invention is not limited to a straight sloping inlet region 46 in the direction of the one boundary 47 of the needle channel 4th Instead of a rectilinear sloping inlet region of this can also be cambered or not formed linearly sloping. It is therefore important only that, starting from the transverse edge 38, there is a linear or non-linear depression in the form of an inlet region 46 sloping in the direction of the needle channel.

From Fig. 8 and 9, further details can be found. In Fig. 8 the shuttle track 2 belonging to the prior art is shown in dashed lines.

It can be seen that the retraction of the residual loop 7 in the needle channel is now much easier, because the needle thread can slide freely under the bottom side of the shell 11 of the shuttle 10 due to the inventive exemption 30, without the surface of the shuttle track stands in the way or obstacles in the area of the underside of the underside play a role. The prior art very small exemption 30 between the top of Schiffchenbahn 2 and the underside of the shuttle 10 is now crucially enlarged according to the invention, as results from the greater exemption 30.

The entry point 24, which was located in the prior art next to the right boundary 47 on the needle channel 4, now moves to the right and forms the entry point 24 according to the invention. This makes it clear that when pulled on the thread 6 in the direction of arrow 12, the entry point 24 in the direction of arrow 50 moves to the right, i. there is more and more thread under the boat through, without the hitching at the Schiffchenrückseite 14 is to be feared. The thread is peeled off, as it were, from the side of the shuttle, and that is due to the release 30 according to the invention.

Thus, the drawn into the needle channel 4 thread length 28 is significantly increased, as is clear from the comparison of Fig. 6 to Fig. 9.

At position 37, the position of the last entanglement is still indicated, which is shown only symbolically. At this point, the unwanted changes of the embroidery pattern, which are caused by the second curve maximum 18 according to the prior art, because the needle thread is held at this point and an unauthorized train on the needle thread 6 at point 37 according to the prior art, due of the second maximum curve 18 is formed. This is now avoided according to the invention.

In FIG. 8, the state of the art is shown by way of example with the reference numeral 2, where it can be seen that the prior art differs from the first embodiment of the invention with respect to the release 30 by an inclined plane. In the prior art, this inclined plane was not present and only a narrow passage gap on the bottom side of the boat dish available.

Fig. 10 shows in perspective the inventive exemption 30 as an inclined plane in the first embodiment.

Fig. 11 shows a second embodiment, which is characterized in that an exemption 31 is provided as a parallel plane to the plane of the shuttle 2, but that this parallel plane is divided by a transverse edge 38 of the shuttle 2 and lowered ,

FIG. 12 shows, as a third exemplary embodiment, that it is not necessary for the solution to form the inclined plane or the relief 30, 31 over the entire transverse extent of the shuttle 2. In some other cases, it is sufficient to arrange a partial release 32 as a recessed level below the shuttle 2, wherein the partial release is formed by a longitudinal edge 39 and the transverse edge 38. The longitudinal edge 39 divides the width of the shuttle about in the range of from 1: 1 to 1/4: 3/4.

Of course, the transitions at the edges 38, 39 flowing into the underlying exemption 31, 32, so that there suitable curve radii are present.

A third embodiment according to FIG. 13 provides an entangled free position 33, which consists in that, although the longitudinal edge 39 is parallel to the plane of the shuttle 2 and also forms a straight line with the shuttle, but that starting from this longitudinal plane edge 39 a further transverse edge 38 is present, which is also in the plane of the shuttle. Opposite, a sloping edge 40 is arranged, which forms the boundary of the needle channel 4 and the opposite of the ship's rail plane longitudinal edge 39 also runs obliquely with a bevel 41 in the direction of the needle channel 4.

Instead of such a crossed-trained exemption 33 all other exemptions may be used, as they were mentioned in the general description introduction.

It is also possible to combine all the different embodiments according to FIGS. 10 to 13 in any desired manner.

FIG. 14 shows the equivalent exemplary embodiment in comparison to FIGS. 10 to 13, where it can be seen that the obliquely set free position 30-33 can also be arranged on the underside of the shuttle 10.

The bottom edge 22 of the shuttle is thus provided in the region of the rear of the shuttle 14 with the exemptions 30-33 according to the invention, as was explained only in the exemplary embodiment according to FIG. 14 with reference to FIG. 10.

Again, the example is characterized in that already in the state in which the shuttle 10 of FIG. 14 is before crossing the needle channel 4, a tension-free retraction of the residual loop 7 can be done in the needle channel, because any inhibition on the Schiffchenrückseite 14 is avoided due to the special shape of the bottom side of the shuttle.

Fig. 15 shows as a further embodiment, which can be combined in any manner with the embodiments of FIGS. 10 to 14, in isolation or in any combination with the embodiments of FIGS. 10 to 14 in addition - or in isolation - a rounded sliding edge 44 can be arranged on the rear bottom edge 22 on the rear of the shuttle 14. Again, the tension-free pulling the remaining loop T is promoted under the boat in the direction of arrow 42, without the risk that it will hang on the back of the boat or at the sole.

The arrow 43 only shows a section through the thread, which is already drawn under the bottom edge 22 of the shuttle in the direction of the needle channel 4.

Fig. 16 shows schematically the falling down of the rest of the loop in the direction of arrow 42 downwards and just at this stage, which is drawn in Fig. 16, the transverse edge 38 should be arranged for the formation of the exemption 30-34, starting from the To begin exemptions on the tread of the shuttle and / or on the bottom surface of the shuttle.

Thus, it is clarified how the length 49 of the release in the direction of the shuttle 2 should be selected. It corresponds to the distance of the Schiffchenrückseite 14 from the right boundary 47 of the needle channel 4 at the time of Fig. 16, where the remaining loop 7 from the boat shell 11 falls on the shuttle track 2.

This measure (length of the release 49) is therefore intended to represent the preferred extent of the inventive release 30-34 in the longitudinal direction of the shuttle.

drawing Legend

[0095] <Tb> 1 <September> guide body <Tb> 2. <September> shuttle race <Tb> 3 <September> Mounting foot <Tb> 4 <September> needle channel <Tb> 5 <September> piercing needle <Tb> 6 <September> needle thread <tb> 7. <SEP> Loop 7 Remaining loop <Tb> 8 <September> arrow <Tb> 9 <September> needlepoint <Tb> 10 <September> boat <Tb> 11 <September> Shell <Tb> 12 <September> arrow <Tb> 13 <September> arrow <Tb> 14 <September> Schiffchenrückseite <Tb> 15 <September> curve peak <Tb> 16 <September> Position <Tb> 17 <September> Position <tb> 18.2. <SEP> Maximum Curve (Prior Art) <Tb> 19 <September> Position <Tb> 20.3. <September> curve peak <Tb> 21 <September> Position <tb> 22. <SEP> bottom margin (out of 11) <Tb> 23 <September> wrap <tb> 24. <SEP> Entry point 24 <Tb> 25 <September> bottleneck <Tb> 26 <September> piece of thread <Tb> 27 <September> Thread length <tb> 28. <SEP> thread length 28 <Tb> 29 <September> <tb> 30. <SEP> Exemption 30 <Tb> 31 <September> exemption <Tb> 32 <September> exemption <Tb> 33 <September> exemption <Tb> 34 <September> exemption <Tb> 35 <September> <Tb> 36 <September> inclination <tb> 37. <SEP> last entanglement <Tb> 38 <September> transverse edge <Tb> 39 <September> longitudinal edge <Tb> 40 <September> chamfer <Tb> 41 <September> chamfer <Tb> 42 <September> arrow <Tb> 43 <September> arrow <Tb> 44 <September> sliding edge <Tb> 45 <September> substance level <Tb> 46 <September> inlet area <tb> 47. <SEP> Right (or lower) limit (out of 4) <Tb> 48 <September> Distance <tb> 49. <SEP> Length of exemption <Tb> arrow

Claims (10)

1. shuttle embroidery machine with shuttle guide and improved embroidery image, wherein the embroidery needle (5) pull the needle thread (front thread 6) through the embroidery bottom (fabric plane 45) and form on the back of a loop (7), which is traversable by the shuttle (10), and the shuttle (10) contains a rear thread, which can be guided through the loop (7) formed by the embroidery needle (5) and thereby engulf the two thread systems, wherein in the area of a shuttle track (2) the shuttle track (2) in Provided in the transverse direction of the needle channel (4), in which the embroidery needle driven oscillating, characterized in that it is provided to avoid needle-thread tension peaks caused by snagging of the needle thread (6) on the Schiffchenrückseite (14), that the Schiffchenbahn ( 2) in the inlet region (46) in front of the needle channel (4) has a lowered release position (30-34) which extends below the plane of the Schiffc is enough. 2. shuttle embroidery machine according to claim 1, characterized in that the free position (30) is formed as an inclined plane which extends below the plane of the shuttle web (2) and into which a side edge (47) of the needle channel (4) opens, (Fig 10). 3. shuttle embroidery machine according to claim 1 or 2, characterized in that the exemption (31) is formed as a transverse, lowered and stepped plane (Fig. 11). 4. shuttle embroidery machine according to one of claims 1 to 3, characterized in that the exemption (32) is designed as a longitudinal, lowered and stepped plane, (Fig. 12). 5. shuttle embroidery machine according to one of claims 1 to 4, characterized in that the exemption (33) is formed as multi-entangled, lowered in the longitudinal and transverse direction plane, (Fig. 13). 6. shuttle embroidery machine according to one of claims 1 to 4, characterized in that the surfaces of the exemption (30-33) are additionally formed concave and / or convex and / or cambered. 7. shuttle embroidery machine with shuttle guide and improved embroidery image, the embroidery needle (5) pulling the needle thread (front thread 6) through the embroidery bottom (fabric plane 45) and forming a loop (7) on the back, which can be moved through by the shuttle (10), and the boat (10) contains a back thread, which can be guided through the loop (7) formed by the embroidery needle (5) and thereby intertwine the two thread systems, wherein in the region of a shuttle track (2) the shuttle track (2) in Cross direction breaking needle channel (4) is provided, in which the embroidery needle (5) driven oscillating, characterized in that to avoid needle-side yarn tension peaks caused by snagging the needle thread (6) on the Schiffchenrückseite (14), it is provided that at least the bottom edge (22) of the shell (11) of the shuttle (10) in the direction of the shuttle track (2) has an exemption (34). 8. shuttle embroidery machine according to claim 7, characterized in that the bottom-side release (34) on the shell (11) of the shuttle (10) is formed as an inclined surface, extending from the Schiffchenrückseite (14) towards the horizontal bottom edge (22) the boat bowl (11) extends. 9. Schiffchenstickmaschine according to one or more of claims 1 to 8, characterized in that the ship-side exemption (34) is at least one ship's rail side release (30-33) opposite. 10. Schiffchenstickmaschine according to one or more of claims 1 to 9, characterized in that the Schiffchenrückseite (14) has a sliding edge (44).