circular loom

Abstract

A circular weaving machine (1) for producing a circular fabric (14) has a main shaft (2), a reed for guiding a weft thread band with a shuttle, a thread storage (3) for a weft thread strip (5), a thread-in device (7) for threading a warp thread strip (5) from the thread storage (3), an assembly of a plurality of guide and length compensation elements (13) with a through passage (19) for a warp thread strip (5) threaded by the thread-in device (7), an outer stop (20), against which the guide and length compensation elements (13) in a basic state without warp thread strip (5) load abut in an outer stop position, an inner stop (21), against which the guide and length compensation elements in an inner stop position abut, and an intermediate stop (22), against which the guide and length compensation elements in a working position abut, wherein the guide and length compensation elements (13) each have a spring lever (16) with a first spring lever portion (17), on which the through passage (19) is arranged, wherein the first spring lever portion (17) in the working position can be deflected by means of a bending action up to the inner stop position against the inner stop (21), wherein the spring lever (16) has a second spring lever portion (18), which in the basic state without warp thread strip (5) load presses the guide and length compensation elements (13) into the outer stop position.

Description

Technical Field

[0001] This invention relates to a circular loom for manufacturing circular fabrics, comprising: a main shaft; a reed for guiding a shuttle for a weft yarn; a yarn storage frame for a weft yarn; a warp-threading device for threading warp yarns from the yarn storage frame; an assembly having a plurality of guides and length compensation members having a through-passage for the warp yarns threaded by the warp-threading device; an outer stop; the guides and length compensation members abutting against the outer stop in a basic state without warp yarn load; an inner stop; the guides and length compensation members abutting against the inner stop in an inner stop position; and a middle stop; the guides and length compensation members abutting against the middle stop in a working position. The guides and length compensation members each have a spring rod with a first spring rod portion, on which the through-passage is provided. The first spring rod portion, in the working position, can be deflected by bending to the inner stop position abutting against the inner stop. Background Technology

[0002] Such a circular loom is disclosed, for example, by EP2829645A1. The circular loom has multiple warp guides arranged around a circular reed to guide the warp strips. A shed-forming device groups the supplied warp strips into two warp pieces and imparts to them alternating movements in opposite directions, thereby opening and closing the weaving shed between the two warp pieces. The shuttle moves along a circular motion trajectory in the open weaving shed while simultaneously feeding weft strips from the weft spool held therein into the weaving shed, thereby forming a fabric. The fabric is drawn through a weaving loop. The warp guides are designed with length compensation compensators, each comprising a spring rod and an eyelet at the upper end of the spring rod for the warp strips to pass through and deflect.

[0003] The length compensator (hereinafter referred to as the compensator) performs the following tasks: Firstly, it compensates for different warp yarn lengths during the shed travel when the shuttle moves between the upper and lower sheds, thus specifying tension compensation. Secondly, the compensator can perform a monitoring function. Circular looms can be stopped, and the compensator can be placed against the outer stop when the warp yarn breaks or is exhausted, and against the inner stop when the warp yarn is overstretched. This reduces erroneous fabric production and waste.

[0004] In the prior art, the compensator has basic setting conditions for an unloaded state, namely, no warp yarns and therefore no warp yarn tension towards the center of the circular loom. The compensator is cast into a support. Below the support are multiple individual tension springs, which are connected at one end to the compensator and at the other end to another ring, the so-called tension spring ring. This embodiment is described herein... Figure 3The compensator is shown in the diagram. A separate tension spring positions the compensator in the outer stop position by abutting against the outer ring. During weaving, the compensator moves towards the center of the loom due to the tension of the tension spring, overcoming the tension of the tension spring, until the lower end of the compensator reaches another stop ring. In this pre-tensioned position, the compensator begins to operate. From this position, only the greater bending spring force of the compensator is applied, as the effective length of the tension spring is limited by the ring in the working position. From the working position, the compensator is in cooperation with the warp feed device. Therefore, the compensator can move continuously from the working position to the inner stop by bending as the warp tension increases. When the warp tension decreases, the compensator returns to the outer stop position, where the tension spring is active again. The compensator position can vary due to warp pass-through, which has the same effect on all warp yarns, and differences in warp tension caused by the weaving process (shuttle pass-through, warp shrinkage). Because the warp yarns travel at the same speed as the fabric pull-out, it is impossible to actively and controllably influence the tension of individual warp yarns. This often results in warp yarns being either too loose or too tight. Differences in angle, friction, and tension between these warp yarns along the path from the yarn feeder to the reed can also increase positional differences, leading to warp yarns being either too loose or too tight. Overly loose warp yarns contact the outer stop via the compensator, causing the loom to stop, but also resulting in warp yarn breakage, weaving defects, defective fabric structures, and further scrap and production losses. Another drawback is the tension springs, which become worn over time, not only at the hooks but also at the compensators, and can become overstretched due to snagging during machine reloading. Due to the poor visibility and accessibility of the tension springs, they are repeatedly reused after being worn, resulting in their absence in many locations. Consequently, the compensator may no longer be able to perform emergency shutdowns in cases of warp breakage, warp exhaustion, or excessive warp tension. This can cause locking, which incurs significant elimination costs, prolonged downtime, increased scrap, and consequently, poorer overall loom efficiency. If excessive warp tension occurs due to unwinding interference from warp bobbins on the crenellation or in the warp pass before compensation, and the compensator is pulled by the warp to the inner stop position, another arc restricts movement, creates contact, and the loom stops.

[0005] Other common prior art is illustrated by EP0253799A2 and AT507558A4. Summary of the Invention

[0006] In contrast, the present invention addresses the following objectives, reducing or eliminating at least some of the disadvantages of the prior art.

[0007] This task is accomplished using a circular loom.

[0008] According to the present invention, each spring bar has a second spring bar portion that presses the guide and length compensation member into the outer stop position in the basic state of being unloaded by the warp yarn.

[0009] Therefore, a second spring rod is provided to position the first spring rod in the outer stop position, with the guide and length compensator in a basic unloaded state, i.e., without tensile stress caused by the warp yarns. Unlike the prior art, the preload of the guide and length compensator, also known as the compensator, can be generated by the counter-tension of the spring rod itself. Thus, it is advantageous to abandon the single tension spring that presses the spring rod into the outer stop position in the prior art. This avoids the aforementioned disadvantages of tension springs. The second spring rod is so flexible that the guide and length compensator, in a basic unloaded state, is transferred to the outer stop position by the elastic restoring force caused by the bending of the second spring rod. The first spring rod is also flexible. When the guide and length compensator overcomes the spring force of the second spring rod and is positioned in the working position on the intermediate stop, the first spring rod, under tensile stress, can be elastically deflected by the warp yarns to overcome the restoring force caused by the bending of the first spring rod until it reaches the inner stop position on the inner stop. The spring rod remains against the intermediate stop here. As a through-channel for the respective warp yarns to pass through, the first spring bar may have an eyelet or heddle eyelet, especially at the upper end.

[0010] For the purposes of this article, the descriptions of position and direction, such as "horizontal," "vertical," "up," and "down," refer to the prescribed working state of a circular loom on a horizontal surface, where the main shaft is oriented vertically. "Inside" means close to the main shaft, that is, close to the center of the circular loom. "Outside" means away from the main shaft, that is, away from the center of the circular loom.

[0011] During the operation of a circular loom, the guide and length compensation member moves towards the center of the loom due to the tension of the warp yarns at the through passage, until it abuts against the intermediate stop. In this pre-tensioned state, the guide and length compensation member is in its working position. From this point onward, the first spring rod of the guide and length compensation member begins to compensate for changes in warp yarn length caused by shed changes for shuttle passage. The spring section of the first spring rod, extending from the outer stop position to at most the inner stop position, is designed to compensate for these warp yarn length changes caused by shed changes, ensuring that the guide and length compensation member are at sufficient distances from the outer and inner stops, respectively, in the working position. As the guide and length compensation member oscillates around the working position, some warp yarns can be tightened more or less during operation, depending on the weaving process, particularly due to different warp shrinkage, warp yarn densities, and warp yarn tensions.

[0012] The circular loom preferably has a mechanism for stopping the loom if one of the guides and length compensation elements abuts in the outer stop position and / or inner stop position. Using this embodiment of the invention, misoperation caused by failing to recognize insufficient warp tension when passing through the outer stop position can be reliably avoided, because it eliminates the need for tension springs and consequently, worn tension spring hooks or tension spring rings.

[0013] Furthermore, designing the guide and length compensation components with a second spring rod allows for a more complex structure compared to existing technologies. By eliminating the tension spring, the warp deflection hoop immediately preceding the compensator, as used in existing technologies, can be discarded. Therefore, in a preferred embodiment, the warp deflection hoop is not immediately preceding the guide and length compensation components. The circular loom preferably has a guide arch. The guide arch can be moved upwards compared to existing technologies. Preferably, the guide arch is located at a height above the lower end of the guide and length compensation components, especially near the lower shed when the shed is fully open. This is impossible in existing technologies because the warp strands might collide with the tension spring. Another advantage of the preceding embodiments is the uniformity of the feed angle of these warp strands distributed over a 360° range.

[0014] In a preferred embodiment, the first and second spring rods have the same, preferably circular, and especially circular, cross-section.

[0015] In a preferred embodiment, the first and second spring rod portions are designed as a first segment or a second segment of a spring rod. In this embodiment, the first and second spring rod portions are preferably designed as a single piece. For example, the first and second spring rod portions can be formed by a segment of round wire. In particular, the through channel at the upper end of the first spring rod portion can also be formed by a single piece of spring rod, especially a segment of round wire.

[0016] Depending on the implementation, the elongated spring bar can have a length ranging from 100 mm to 500 mm. When designed as a round wire, the spring bar can, for example, have a diameter of 1 mm to 3 mm, especially essentially 2 mm.

[0017] Various implementations of the spring rod can be specified to preload the guide and length compensation component to the outer stop position.

[0018] In a preferred embodiment, the spring rod is bent at least once at an angle greater than 90° with respect to the outer stop position, and particularly at least once at an angle greater than 135° to form the first and second spring rod portions. Therefore, this embodiment provides at least one bending point.

[0019] In the first variation, the spring rod is bent exactly once at an angle of more than 135° about the outer stop position to form the first and second spring rod portions. In this variation, the spring rod is preferably bent in a substantially U-shape. This embodiment is advantageous from a manufacturing technology perspective because only a single bending point is required, while simultaneously allowing for a space-saving arrangement.

[0020] In the second variation, the spring rod is bent at least twice, and particularly exactly three times, with respect to the outer stop position at an angle exceeding 135°, to form the first and second spring rod portions. Preferably, the spring rod in this variation is substantially W-shaped. This embodiment is particularly space-saving.

[0021] In another embodiment, the second spring rod is arranged relative to the first spring rod at an angle of less than 30° with respect to the outer stop position. Preferably, the spring rod in this variation is substantially I-shaped.

[0022] It is advantageous for the second spring rod, especially at its free end, to abut against a stop (which remains stationary during weaving) under preload, particularly a stop ring.

[0023] The guides and length compensation members are preferably arranged in a ring around the reed. The warp yarns can be guided by the guides and length compensation members through multiple through holes in the reed. As is common in the prior art, shed forming devices for opening or closing the weaving shed can be distributed around the reed between the guides and length compensation members and the reed.

[0024] In order to facilitate the installation and arrangement of the guide and length compensation elements at predetermined positions around the main shaft of a circular loom, the spring rod is held on a plurality of supports in a preferred embodiment, each of which is mounted on a support element (fixed during weaving), particularly a support ring.

[0025] To allow for replacement later, in a preferred embodiment, the spring rod is detachably mounted on the support via a plug-in connection. This embodiment is also advantageous from an ecological perspective.

[0026] Preferably, the spring rod is made of metal and / or the support is made of plastic.

[0027] In a preferred embodiment, a support is arranged between the opposing ends of the spring rod. Each spring rod may have a retainer, particularly a retaining section of the spring rod, extending between the first and second spring rod portions. The retainer, particularly the retaining section, is held on the support.

[0028] In a preferred embodiment, the support is designed as a swivel support, which is preferably pivoted about a horizontal axis of rotation as the guide and length compensation member moves between the working position and the outer stop position.

[0029] To accurately determine the working position, the rotary support in a preferred embodiment has a stop surface that abuts against an intermediate stop in the working position. The stop surface of the rotary support can be bent, in particular, corresponding to the outer contour of the intermediate stop. In the working position, the first spring rod can be deflected to the inner stop position by elastic bending to achieve dynamic warp length compensation during shed changes.

[0030] In a preferred embodiment, the spring rods are respectively held within the positioning grooves of the swivel support. This ensures that the spring rods are reliably held on the swivel support. Additionally, it is advantageous to increase the support width of the guides and length compensation members. The support width of the guides and length compensation members comprises the desired clearance, preferably corresponding to the circumference of the support ring, minus any possible fixing points on the loom, and then divided by the maximum number of warp yarns on the loom. This eliminates the need for the separators used in these guides and length compensation members in the prior art.

[0031] In a preferred embodiment, the spring rod is positioned on the swivel support such that the effective length of the first spring rod portion (i.e., the section of each first spring rod portion available for bending) decreases from the working position to the inner stop position. This is preferably achieved such that the length of the spring rod contacting the swivel support increases from the working position to the inner stop position. This allows for a gradual increase in spring tension under strong warp tension due to the shorter spring length of the first spring rod portion.

[0032] In the first variation, the spring bar pad has at least one edge where the effective length of the first spring bar portion is shortened between the working position and the inner stop position. In this variation, the effective spring length of the first spring bar portion is shortened in a stepped manner.

[0033] In the second variation, the spring bar pad has a curved support surface that continuously shortens the effective length of the first spring bar section until the inner stop position.

[0034] In a preferred embodiment, each rotary support has a hook that preferably points downwards, which restricts the rotary support from pivoting outwards, i.e., pivoting away from the center of the circular loom.

[0035] In another embodiment, the support is arranged at the end of the second spring rod opposite the through-channel for the warp yarn. The outer stop, inner stop, and intermediate stop may in this embodiment be arranged between the through-channel at one end of the spring rod and the support at the other end of the spring rod. Attached Figure Description

[0036] The present invention will now be explained in conjunction with preferred embodiments as shown in the following figures.

[0037] Figure 1 The diagram shows a side view of the circular loom of the present invention, in which the compensation device has a plurality of spring rods having a first spring rod portion and a second spring rod portion for guiding and compensating the length of the warp yarn.

[0038] Figure 2 Shown in top view Figure 1 Circular loom.

[0039] Figure 3 The illustration schematically shows a guide and length compensation element according to the prior art.

[0040] Figure 4 This illustration schematically shows one embodiment of the guide and length compensation element of the present invention.

[0041] Figure 5 Another embodiment of the guide and length compensation component is shown.

[0042] Figures 6 to 9 Various embodiments of the guide and length compensation member of the present invention are shown in their basic state of being unloaded by the warp yarn.

[0043] Figures 10 to 13 The guide and length compensation element in the working position are shown corresponding to Figures 6 to 9 The view. Detailed Implementation

[0044] exist Figure 1 and Figure 2 The diagram shows a circular loom 1, specified for use with slivers, yarns, monofilaments, and multifilaments as warp and weft yarns. The circular loom 1 has a circular reed (not shown for better overview) arranged in a ring around a generally vertical main axis or spindle 2 along which the machine shaft extends. A shuttle (not shown) is guided along the reed along with weft yarn bobbins for feeding the weft yarns. Furthermore, the circular loom 1 has a yarn storage frame 3 (so-called bobbin frame), on which warp yarn bobbins 4 carrying warp yarns 5 are vertically overlapped in a horizontal arrangement. Another yarn storage frame (not shown) is provided on the opposite side of the circular loom 1 about the spindle 2, and it may be designed identically. Warp yarns are fed from the warp yarn bobbins 4 through yarn guide holes 6 in the bobbin frame at an angle 6A to a warp-feeding device 7, which has a guide roller 8 and a warp-feeding roller 9. The warp roller 9 is driven by a motor to affect the feed of the warp yarn 5.

[0045] For example Figure 1 and Figure 2As shown, the warp sliver 5 is fed after the warp threading device 7 by other guide rollers 10, 11 and guide arch 12 to an assembly consisting of guides and length compensation members 13 (so-called compensators), which are arranged around the reed 2. The guides and length compensation members 13 compensate for dynamic fluctuations in warp tension. Between the guides and length compensation members 13 and the reed, a shed forming device (not shown here) is distributed around the reed, thereby generating two (schematically visible) warp strips that perform alternating upward or downward movements in opposite directions, thus opening and closing the weaving shed. In the open state, the weaving shed forms a space defined by the two warp strips, through which the shuttle, along with the weft bobbin, moves and simultaneously feeds out (not visible) the weft strip to create a circular fabric 14.

[0046] like Figure 3 As shown, the guide and length compensation element 13 is always pre-tensioned by means of a tension spring 15 in the prior art.

[0047] In comparison, Figure 4 The schematic illustration shows one embodiment of the guide and length compensation member 13, which takes the form of a spring rod 16 having a first spring rod portion 17 and a second spring rod portion 18. At its upper free end, the first spring rod portion 17 has a plurality of through channels 19, particularly each having an eyelet, a perforated ring, or a heddle eye through which the warp yarn 5 is guided. The guide and length compensation member 13 cooperates with an outer stop 20, an inner stop 21, and a middle stop 22 (respectively at...). Figure 4 (Only shown schematically in the middle). Figure 4 In the outer stop position marked with "A", the first spring rod 17 is attached to the outer stop 20. Figure 4 In the inner stop position marked with "C", the first spring rod portion 17 is abutted against the inner stop 21. Figure 4 In the working position marked with "B", the spring rod 17 is against the intermediate stop 22. In the working position against the intermediate stop, the spring rod 16 can be further moved to the inner stop position by the elastic deflection of the first spring rod portion 17, in which the spring rod 16 is also against the inner stop 21.

[0048] In the prior art, see Figure 3 The tension spring 15 is used to position the guide and length compensation member 13 into the outer stop position abutting the outer stop 20. In contrast, in Figure 4 In this embodiment, the second spring rod portion 18 is provided for pressing the spring rod 16 into the outer stop position. This avoids, for example, misoperation caused by a hook that rubs against the tension spring 15. Additionally, the deflection clamp 23 (see...) can be omitted. Figure 3 ).

[0049] exist Figure 1 and Figure 4In this embodiment, the spring rod 16 is bent exactly once at an angle of more than 135° about the outer stop position of the guide and length compensation member 13 to form the first spring rod portion 17 and the second spring rod portion 18. The second spring rod portion 18 is elastically pre-tensioned at the end of the spring rod 16 opposite to the through channel 19 and abuts against a stop member 24 (which remains stationary during weaving), in particular a stop ring extending around the main shaft 2. Figures 6 to 13 The "V" symbol used to indicate preload represents the stop 24. Additionally, the spring rod 16 is held in a position... Figure 1 and Figure 4 The support 25, which is only shown schematically, is mounted on a support member 26 (which is fixed during the weaving process), specifically a support ring that extends around the main shaft 2.

[0050] Figure 5 Another embodiment of the guide and length compensation member 13 in its working position abutting the intermediate stop 22 is shown, illustrating three different bending states of the first spring bar 17 during dynamic length compensation of tensile stress caused by the warp yarns. Figure 5 In this embodiment, the spring rod 16 is bent at the first bending point 27, the second bending point 28, and the third bending point 29. The spring rod 16 is detachably held on a support 25 via a plug-in connection, the support being designed as a swivel support between the opposing ends of the spring rod 16 in the illustrated embodiment. The swivel support has a rotation axis 31 about which it is pivotable relative to the support member 26. The swivel support has a stop surface 34 that abuts against an intermediate stop 22 from the outer stop position as it reaches the working position, preventing further inward pivoting of the swivel support when the spring rod 16 moves to the inner stop position. The spring rod 16 is held within an end-side positioning groove 32 of the swivel support. On the first spring rod portion 17 side, the positioning groove 32 transitions to a pad 33, which is a support groove, against which the first spring rod portion 17 abuts when it deflects from the working position to the inner stop position. This allows the effective length of the first spring rod portion 17 to be reduced until the inner stop position to obtain a progressive spring characteristic. The swivel support also has a downward-pointing hook 34. If some of the spring bars 16 are missing during partial loading, the swivel support can tilt outwards and then downwards during operation, thus eliminating the separation; or the swivel support can fall out, creating a gap. Misoperation is prevented by limiting outward pivoting via the hook 34.

[0051] Figures 6 to 9 Different embodiments of the guide and length compensation member 13 are shown, which is positioned in the outer stop position in a basic state without warp yarn 5 load. Figures 10 to 13 The corresponding view shows the working position of the intermediate stop 22 used for guiding and length compensation 13.

[0052] Figure 6 and Figure 10 One embodiment is shown, in which the first spring rod 17 and the second spring rod 18 are in their basic state (see...). Figure 6 The springs are basically arranged in an I-shape, that is, they are basically arranged in a line. The free end of the second spring rod 18 is pre-tightened by means of the stop 24.

[0053] Figure 7 and Figure 11 Show Figure 1 and Figure 4 The implementation method is as explained above.

[0054] Figure 8 and Figure 12 Shown in simplified view Figure 5 The implementation method is as explained above.

[0055] Figure 9 and Figure 13 One embodiment is shown, in which the support 25 is disposed at the end of the spring rod 16 opposite to the through channel 19.

[0056] List of reference numerals

[0057] 1. Circular loom

[0058] 2 spindles

[0059] 3. Yarn storage rack

[0060] 4. Warp sliver cones

[0061] 5 warp strips

[0062] 6. Yarn guide holes for the yarn tray

[0063] 6A angle

[0064] 7. Threading device

[0065] 8. Steering rollers

[0066] 9. Warp rollers

[0067] 10, 11 Other steering rollers

[0068] 12 Yarn guide arch plate

[0069] 13. Guide and length compensation components (“compensator”)

[0070] 14 Circular Fabric

[0071] 15. Tension Spring

[0072] 16 Spring Rods

[0073] 17 First Spring Rod Section

[0074] 18 Second spring rod section

[0075] 19 Through passage

[0076] 20 Outer stop

[0077] 21 Inner stop

[0078] 22 Intermediate stop

[0079] 23 Deflection hoop

[0080] 24 Stop components

[0081] 25 Support base

[0082] 26 Support components

[0083] 27 First bending point

[0084] 28 Second bending point

[0085] 29 Third bending point

[0086] 31. Axis of rotation

[0087] 32 positioning slots

[0088] 33 Pad

[0089] 34 Stop surface

Claims

1. A circular loom (1) for manufacturing circular fabrics (14), said circular loom (1) comprising: Main spindle (2), The reed used to guide the shuttle for the weft yarn. Yarn storage rack (3) for warp strips (5), A threading device (7) for threading the warp strips (5) through the yarn storage rack (3), An assembly having a plurality of guides and length compensation elements (13) having a through channel (19) for the warp strip (5) to be inserted by the warp threading device (7). The outer stop (20), the guide and length compensation member (13) abuts against the outer stop in the position of the outer stop under the basic state of no load on the warp strip (5). Inner stop (21), the guide and length compensation member abuts against the inner stop in the inner stop position. Intermediate stop (22), the guide and length compensation member abuts against the intermediate stop in the working position. in, The guide and length compensation member (13) each have a spring rod (16) with a first spring rod portion (17), and the through channel (19) is provided on the first spring rod portion. In the working position, the first spring rod (17) can bend to continuously rotate to the inner stop position against the inner stop (21) by means of bending. Each of the spring rods (16) has a second spring rod portion (18), which, in a basic state without the warp yarn (5) load, presses the guide and length compensation member (13) into the outer stop position. The spring rod (16) is held on the support seat (25), which is mounted on the support member (26). The support seat (25) is designed as a rotating support seat, which pivots between the working position and the outer stop position during the transfer of the guide and length compensation member (13). Its features are, The rotating support seats each have a stop surface (34), which abuts against the intermediate stop (22) in the working position.

2. The circular loom (1) according to claim 1, characterized in that, The spring rod (16) is bent at least once at a greater than 90° angle with respect to the outer stop position to form the first spring rod portion (17) and the second spring rod portion (18).

3. The circular loom (1) according to claim 2, characterized in that, The spring rod (16) is bent exactly once at a greater than 135° angle with respect to the outer stop position to form the first spring rod portion (17) and the second spring rod portion (18).

4. The circular loom (1) according to claim 2, characterized in that, The spring rod (16) is bent at least twice with a radius greater than 135° about the outer stop position to form the first spring rod portion (17) and the second spring rod portion (18).

5. The circular loom (1) according to claim 1, characterized in that, The second spring rod (18) is arranged relative to the first spring rod (17) at an angle of less than 30° in relation to the position of the outer stop.

6. The circular loom (1) according to any one of claims 1 to 5, characterized in that, The second spring rod (18) abuts against the stop (24) under preload.

7. The circular loom (1) according to claim 1, characterized in that, The support seats are respectively mounted on the support rings.

8. The circular loom (1) according to claim 7, characterized in that, The spring rod (16) is detachably mounted on the support (25).

9. The circular loom (1) according to claim 7 or 8, characterized in that, The support (25) is arranged between the opposite ends of the spring rod (16).

10. The circular loom (1) according to claim 1, characterized in that, The spring rods (16) are respectively held in the positioning grooves (32) of the rotating support.

11. The circular loom (1) according to claim 1, characterized in that, The spring rod (16) is arranged on the rotating support such that the effective length of the first spring rod portion (17) decreases from the working position to the inner stop position.

12. The circular loom (1) according to claim 1, characterized in that, Each of the rotating support seats has a hook that restricts the rotating support seat from pivoting outward.

13. The circular loom (1) according to claim 1 or 8, characterized in that, The support (25) is arranged at the end of the second spring rod (18) opposite to the through channel (19).

14. The circular loom (1) according to claim 2, characterized in that, The spring rod (16) is bent at least once with respect to the outer stop position at an angle greater than 135° to form the first spring rod portion (17) and the second spring rod portion (18).

15. The circular loom (1) according to claim 4, characterized in that, The spring rod (16) is bent exactly three times with a radius greater than 135° about the outer stop position to form the first spring rod portion (17) and the second spring rod portion (18).

16. The circular loom (1) according to claim 6, characterized in that, The second spring rod (18) abuts against the stop (24) at its free end under preload.

17. The circular loom (1) according to claim 6, characterized in that, The second spring rod (18) abuts against the stop ring at its free end under preload.

18. The circular loom (1) according to claim 8, characterized in that, The spring rod (16) is detachably mounted on the support (25) via a plug-in connection.

19. The circular loom (1) according to claim 12, characterized in that, Each of the rotary support seats has a downward-pointing hook that restricts the rotary support seat from pivoting outward.

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