Plastic circular weaving machine

Abstract

The utility model discloses a plastic circular weaving machine, which belongs to the field of spinning, solves the problem that warps are seriously abraded when penetrating through door ring components, and adopts the technical scheme that a first avoiding surface is further arranged on the lower surface of an upper door ring; the upper surface of the upper door ring is provided with a first receding face, the first receding face is located on the peripheral side of the upper runway and extends to the peripheral side face of the upper door ring from the peripheral side of the upper runway, and the upper surface of the lower door ring is further provided with a second receding face which is located on the peripheral side of the lower runway and extends to the peripheral side face of the lower door ring from the peripheral side of the lower runway. The height of the first avoiding surface is gradually reduced from the outer peripheral side to the inner peripheral side, the height of the second avoiding surface is gradually increased from the outer peripheral side to the inner peripheral side, the outer peripheral edge of the first avoiding surface is higher than the highest stroke points of the outer heald eye and the inner heald eye, and the outer peripheral edge of the second avoiding surface is lower than the lowest stroke points of the outer heald eye and the inner heald eye; and no separating reed door is arranged between the upper door ring and the lower door ring. The utility model is mainly used for reducing the wear degree when the warp passes through the door ring assembly and reducing the probability of warp breakage.

Description

TECHNICAL FIELD

[0001] The utility model relates to a plastic braiding machine, in particular to a plastic circular weaving machine. BACKGROUND

[0002] The existing plastic circular weaving machine generally comprises a main machine, the main machine comprises a door ring assembly, a warp yarn shedding assembly and a shuttle, the warp yarn shedding assembly is located on the outer circumferential side of the door ring assembly, the warp yarn shedding assembly comprises an outer harness, an inner harness and a harness band, the outer harness has an outer harness eye for the warp yarn to pass through, the inner harness has an inner harness eye for the warp yarn to pass through, the harness band is connected between the outer harness and the inner harness and drives the outer harness and the inner harness to move up and down alternately under the driving of the swing lever assembly, so that the warp yarn passing through the outer harness eye and the warp yarn passing through the inner harness eye are shed up and down, the door ring assembly comprises an upper door ring and a lower door ring, the lower surface of the upper door ring is provided with an upper runway, the upper surface of the lower door ring is provided with a lower runway, and the shuttle moves in a circle along the upper runway and the lower runway. Figure 1 In the weaving process, when the outer harness and the inner harness move up and down, the warp yarn will contact the lower surface of the upper door ring and the upper surface of the lower door ring, so that the warp yarn is kept in a certain degree of tension, that is, the warp yarn will not be suspended through the door ring assembly, and the outer circumferential side of the door ring of the existing plastic circular weaving machine is generally a cylindrical structure, that is, when the warp yarn contacts the lower surface of the upper door ring and the upper surface of the lower door ring, a bending will be formed at the outermost side of the upper door ring and the lower door ring, as shown in the middle A and B, and the warp yarn 09 will also slide along the lower surface of the upper door ring 031 or the upper surface of the lower door ring 032 for a distance, which will aggravate the wear of the warp yarn during the process of passing through the door ring assembly, and the warp yarn is prone to breakage.

[0003] Moreover, the outer side of the upper door ring and the lower door ring is close to the inner harness, and after the wear and replacement of the harness band and the harness, the new harness band has not been stretched due to long-term use, in order to keep the warp yarn in good tension and contact the lower surface of the upper door ring and the upper surface of the lower door ring, workers will habitually set the low point of the downward movement of the warp yarn lower than the outer circumferential edge of the upper surface of the lower door ring and the high point of the upward movement higher than the outer circumferential edge of the lower surface of the upper door ring in order to facilitate the installation of the warp yarn shedding assembly and improve the replacement efficiency, which will make the warp yarn enter the door ring assembly at a relatively large bending angle between the harness and the door ring assembly, and the warp yarn is generally a plastic flat yarn, which will form a relatively large bending angle and have a relatively large friction resistance with the door ring assembly, which will cause a relatively large wear of the warp yarn, which leads to the fact that the plastic circular weaving machine can only weave some warp yarns with good strength, and cannot weave thin and low-strength warp yarns, otherwise the warp yarn will often break and the machine will stop, which will affect normal production. UTILITY MODEL CONTENTS

[0004] The utility model discloses want to reach the purpose is to provide a kind of plastic circular weaving machine, solve the problem of serious wear when warp thread passes through door ring assembly, reduce the wear degree when warp thread passes through door ring assembly, let plastic circular weaving machine can be suitable for more different strength warp thread to weave, improve the production capacity of enterprise, reduce the probability of broken warp, ensure the production efficiency of enterprise.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme: a kind of plastic circular weaving machine, including host computer, host computer includes door ring assembly, warp thread open exchange component and shuttle, warp thread open exchange component is located at the outer circumferential side of door ring assembly, warp thread open exchange component includes outer harness, inner harness and harness band, outer harness has outer harness eye for warp thread to pass through, inner harness has inner harness eye for warp thread to pass through, harness band is connected between outer harness and inner harness and is driven under the swing lever assembly to drive outer harness, inner harness alternately up and down movement, make the warp thread passing through outer harness and the warp thread passing through inner harness up and down open exchange, door ring assembly includes upper door ring, lower door ring, the lower surface of upper door ring is equipped with upper runway, the upper surface of lower door ring is equipped with lower runway, shuttle makes circumferential motion along upper runway and lower runway, the lower surface of upper door ring is also equipped with first avoiding surface, first avoiding surface is located at the outer circumferential side of upper runway and extends from the outer circumferential side of upper runway to the outer circumferential side of upper door ring, the upper surface of lower door ring is also equipped with second avoiding surface, second avoiding surface is located at the outer circumferential side of lower runway and extends from the outer circumferential side of lower runway to the outer circumferential side of lower door ring, first avoiding surface gradually decreases height from outer circumferential side to inner circumferential side, second avoiding surface gradually increases height from outer circumferential side to inner circumferential side, the outer circumferential edge of first avoiding surface is higher than the highest point of travel of outer harness and inner harness, the outer circumferential edge of second avoiding surface is lower than the lowest point of travel of outer harness and inner harness, there is no silk reed door between upper door ring and lower door ring.

[0006] After adopting the above technical scheme, the utility model has the following advantages: design first avoiding surface and second avoiding surface, let warp thread be suspended between outer harness eye or inner harness eye and upper runway, lower runway, reduce the contact distance between warp thread and upper door ring, lower door ring, while reducing the bending times of warp thread, the bending angle will also be smaller, reduce the wear degree when warp thread passes through door ring assembly, it is favorable to guarantee that warp thread is not easy to break, because the warp thread tension between harness eye and upper, lower door ring is appropriate, warp thread is not easy to shift horizontally, so the silk reed door between upper door ring and lower door ring can be cancelled, further cancel the wear of silk reed door to warp thread.

[0007] Further, the upper runway and the lower runway are both conical surfaces, the upper runway is inclined upward from the outside to the inside, and the lower runway is inclined downward from the outside to the inside.

[0008] By adopting the foregoing technical solution, the upper shuttle wheel and the lower shuttle wheel can be in more stable contact with the upper runway and the lower runway respectively, the stability of the movement of the shuttle is improved, and the upper runway and the lower runway can better withstand the centrifugal force generated when the shuttle moves in a circle.

[0009] Further, the shuttle has an outer guide rod, the warp yarn is introduced into the central area of the door ring assembly through the upper edge or the lower edge of the outer guide rod after passing through the door ring assembly, the upper edge of the outer guide rod is located on the conical surface where the upper runway is located, and the lower edge of the outer guide rod is located on the conical surface where the lower runway is located.

[0010] By adopting the foregoing technical scheme, the bending of the warp yarn when being guided from the door ring assembly to the outer guide rod is reduced, and the abrasion of the warp yarn is further reduced.

[0011] Further, the shuttle has an upper shuttle wheel and a lower shuttle wheel, the upper shuttle wheel rolls along the upper runway, and the lower shuttle wheel rolls along the lower runway.

[0012] By adopting the foregoing technical scheme, the upper shuttle wheel and the lower shuttle wheel are facilitated to stably contact the upper runway and the lower runway respectively, and the stability of the movement of the shuttle is improved.

[0013] Further, the upper shuttle wheel and the lower shuttle wheel are both cylindrical wheels, the rotation axis of the upper shuttle wheel is parallel to the upper runway, and the rotation axis of the lower shuttle wheel is parallel to the lower runway.

[0014] By adopting the foregoing technical scheme, the contact area between the upper shuttle wheel and the upper runway and the lower shuttle wheel and the lower runway can be reduced, the frictional resistance is reduced, the heat generation of the upper shuttle wheel and the lower shuttle wheel during high-speed movement of the shuttle is reduced, and the abrasion speed is reduced.

[0015] Further, the upper runway and the lower runway are both planes.

[0016] By adopting the foregoing technical scheme, the acting force between the upper shuttle wheel and the lower shuttle wheel and the upper runway and the lower runway respectively after the circular movement of the shuttle is smaller, the warp yarn is less rolled, and the damage of the warp yarn is further reduced.

[0017] Further, the first avoiding surface and the upper runway are transitioned through a first round corner, the radius R1 of the first round corner is 1-5 mm, the second avoiding surface and the lower runway are transitioned through a second round corner, and the radius R2 of the second round corner is 1-5 mm.

[0018] By adopting the foregoing technical scheme, the abrasion of the warp yarn by the door ring assembly can be reduced, R1 and R2 are small, and the length of the contact between the warp yarn and the first round corner and the second round corner can also be reduced.

[0019] Further, the first avoiding surface and the second avoiding surface are both conical surfaces, the angle A1 of the first avoiding surface relative to the horizontal plane is greater than or equal to 10°, and the angle A2 of the second avoiding surface relative to the horizontal plane is greater than or equal to 10°.

[0020] By adopting the foregoing technical scheme, the first avoiding surface and the second avoiding surface are facilitated to be designed and manufactured, and it is ensured that the warp yarn will not contact the first avoiding surface and the second avoiding surface to be abraded. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model will be further described below with reference to the drawings:

[0022] Figure 1 It is a cross section schematic view of a plastic circular weaving machine at door circle subassembly in the prior art;

[0023] Figure 2 It is a schematic view of a plastic circular weaving machine of the utility model;

[0024] Figure 3 It is a cross section schematic view of a plastic circular weaving machine at door circle subassembly in the utility model;

[0025] Figure 4 It is a cross section schematic view (one) of door circle subassembly in the utility model;

[0026] Figure 5 It is a cross section schematic view (two) of door circle subassembly in the utility model;

[0027] Figure 6 It is a cross section schematic view (three) of door circle subassembly in the utility model;

[0028] Figure 7 It is a cross section schematic view (four) of door circle subassembly in the utility model;

[0029] Figure 8 It is a cross section schematic view (five) of door circle subassembly in the utility model. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments.

[0031] The terms "first", "second", and the like, if any, in the description and claims of the present application are used for distinguishing between similar objects talking about the same object, and are not necessarily used to describe a particular sequential or chronological order. Even if there is such a possibility, it is also not necessarily made as such that a "second" mentioned in the context of one of the technical features implies that there must also be a "first". It is to be understood that "comprising" and "including" as well as any variations thereof are used synonymously herein, and are intended to cover the non-exclusive inclusions. It is to be understood that "a" or "an" can mean one or more than one. It is to be understood that "and / or" is merely an open group of linking words that can be used in various connections with the words it governs. It is to be understood that "comprises", "comprising", "includes", "including" and "involves", "involved" and similar forms are specific, but not exhaustive, in that they indicate certain situations, but do not exclude others. It is to be understood that "multiple" means two or more, and "and / or" is merely an open group of linking words that can be used in various connections with the words it governs. It is to be understood that "X, Y, and / or Z" can mean X alone, Y alone, Z alone, X combined with any one of Y or Z, Y combined with any one of X or Z, Z combined with any one of X or Y, X combined with Y and Z, X combined with Y but not Z, X combined with Z but not Y, Y combined with Z but not X, or a combination of X, Y and Z.

[0032] The technical solutions of the present application will be described in detail below with specific examples. The following specific examples can be combined or replaced according to actual conditions, and the same or similar concepts or processes can not be described in some examples.

[0033] In combination Figure 2 And Figure 3As shown, the utility model provides a kind of plastic circular weaving machine, including host computer 100, host computer 100 includes door circle subassembly, warp yarn open exchange subassembly and shuttle 400, warp yarn open exchange subassembly is located at the outer circumferential side of door circle subassembly, and warp yarn open exchange subassembly includes outer harness 21, inner harness 22 and harness band 23, outer harness 21 has outer harness eye 211 for warp yarn to pass, and inner harness 22 has inner harness eye 221 for warp yarn 9 to pass, and harness band 23 is connected between outer harness 21 and inner harness 22 and is driven under swing lever assembly to drive outer harness 21, inner harness 22 alternately up and down movement, so that the warp yarn passing through outer harness eye 211 and the warp yarn passing through inner harness eye 221 are up and down open exchange, and door circle subassembly includes upper door circle 31, lower door circle 32, the lower surface of upper door circle 31 is equipped with upper runway 311, and the upper surface of lower door circle 32 is equipped with lower runway 321, and shuttle 400 is circumferentially moved along upper runway 311 and lower runway 321, and the lower surface of upper door circle 31 is also equipped with first avoiding surface 312, and first avoiding surface 312 is located at the outer circumferential side of upper runway 311 and extends to the outer circumferential side of upper door circle 31, and the upper surface of lower door circle 32 is also equipped with second avoiding surface 322, and second avoiding surface 322 is located at the outer circumferential side of lower runway 321 and extends to the outer circumferential side of lower door circle 32, and first avoiding surface 312 and second avoiding surface 322 are all conical surface, and first avoiding surface 312 gradually decreases height from the outer circumferential side, and second avoiding surface 322 gradually increases height from the outer circumferential side, and the outer circumferential edge of first avoiding surface 312 is higher than the highest point of travel of outer harness eye 211 and inner harness eye 221, and the outer circumferential edge of second avoiding surface 322 is lower than the lowest point of travel of outer harness eye 211 and inner harness eye 221, and there is no silk reed door between upper door circle 31 and lower door circle 32.For ensuring that warp yarn open exchange subassembly drives warp yarn to normally and orderly open exchange, ensure that weaving work is normal and reliable, warp yarn open exchange subassembly also includes upper roller 24 and lower roller 25, and harness band 23 includes upper harness band 231 and lower harness band 232, upper harness band 231 is covered in the outer circumferential of upper roller 24 and is connected with the top end of outer harness 21 and inner harness 22 respectively, lower harness band 232 is covered in the outer circumferential of lower roller 25 and is connected with the bottom end of outer harness 21 and inner harness 22 respectively, and lower harness band 232 is movably connected with swing lever assembly.Swing lever assembly can refer to prior art.

[0034] The utility model designs first avoiding surface 312 and second avoiding surface 322, let warp yarn be suspended between outer harness eye 211 or inner harness eye 221 and upper runway 311, lower runway 321, under the condition that keeping that warp yarn has certain tension, reduce the contact distance between warp yarn and upper door circle 31, lower door circle 32, reduce the bending frequency of warp yarn simultaneously, and bending angle will also be small, reduce the wear and tear degree of warp yarn when passing through door circle subassembly, it is favorable to guarantee that warp yarn is not easy to break, because the tension of warp yarn between harness eye and upper, lower door circle 32 is certain, and warp yarn is not easy to deviate horizontally, so the silk reed door between upper door circle 31 and lower door circle 32 can be cancelled, further cancels the wear and tear of silk reed door to warp yarn.

[0035] In an embodiment, the upper runway 311 and the lower runway 321 are both conical surfaces, the upper runway 311 is inclined upward from outside to inside, and the lower runway 321 is inclined downward from outside to inside. Correspondingly, the upper shuttle wheel 42 and the lower shuttle wheel 43 can be selected as cylindrical wheels, that is, the outer peripheral side surface of the upper shuttle wheel 42 and the lower shuttle wheel 43 is a cylindrical surface or an outward convex arc surface, for example, the shuttle wheel disclosed in CN110438630A, so that the contact area between the upper shuttle wheel 42 and the upper runway 311 and the contact area between the lower shuttle wheel 43 and the lower runway 321 can be reduced, the frictional resistance can be reduced, the heat generation of the upper shuttle wheel 42 and the lower shuttle wheel 43 during high-speed movement of the shuttle 400 can be reduced, the wear speed can be reduced, the rotation axis of the upper shuttle wheel 42 is parallel to the upper runway 311, and the rotation axis of the lower shuttle wheel 43 is parallel to the lower runway 321. In order to adapt to the conical runway, the upper shuttle wheel 42 and the lower shuttle wheel 43 can also be conical wheels, that is, the outer peripheral side surface of the upper shuttle wheel 42 and the lower shuttle wheel 43 is a conical surface, so that the contact area between the upper shuttle wheel 42 and the upper runway 311 and the contact area between the lower shuttle wheel 43 and the lower runway 321 can be increased under the condition that the thickness of the upper shuttle wheel 42 and the lower shuttle wheel 43 is the same, and the stability of the movement of the shuttle 400 can be improved.

[0036] In an embodiment, the shuttle 400 has an outer guide rod 41, the warp is introduced into the central area of the door ring assembly through the upper edge or the lower edge of the outer guide rod 41 after passing through the door ring assembly, the upper edge of the outer guide rod 41 is located on the conical surface where the upper runway 311 is located, and the lower edge of the outer guide rod 41 is located on the conical surface where the lower runway 321 is located. The warp can be linearly pulled along the upper runway 311 to the upper edge of the outer guide rod 41, and the warp can be linearly pulled along the lower runway 321 to the lower edge of the outer guide rod 41, so that the bending of the warp when being guided from the door ring assembly to the outer guide rod 41 can be reduced, and the wear of the warp can be further reduced.

[0037] The shuttle 400 has the upper shuttle wheel 42 and the lower shuttle wheel 43, the upper shuttle wheel 42 rolls along the upper runway 311, and the lower shuttle wheel 43 rolls along the lower runway 321. Since a large centrifugal force is generated when the shuttle 400 moves at a high speed, the weight of the shuttle 400 can be overcome at this time, the upper runway 311 and the lower runway 321 simply limit the upper shuttle wheel 42 and the lower shuttle wheel 43, the weight of the shuttle 400 is avoided to act on the warp, the rolling pressure of the shuttle 400 on the warp is reduced, the strength of the warp can be protected, and the warp is not easy to break.

[0038] In another embodiment, as Figure 5As shown, the upper runway 311 and the lower runway 321 are both flat, and the door ring assembly further comprises a roller connected between the upper door ring 31 and the lower door ring 32, the bottom plate of the shuttle 400 moves along the roller and the centrifugal force generated by the movement of the shuttle 400 is offset by the roller, and the upper shuttle wheel 42 and the lower shuttle wheel 43 have smaller forces acting thereon and less crushing of the warp yarns between the upper runway 311 and the lower runway 321. The structure of the roller can refer to the existing technology, for example, the roller disclosed in CN213866649U.

[0039] In one embodiment, referring to Figure 4 , the width W1 of the first avoiding surface 312 is greater than the width W2 of the upper runway 311, and the width W3 of the second avoiding surface 322 is greater than the width W4 of the lower runway 321. Since the upper runway 311 and the lower runway 321 both need to be finished to reduce surface roughness, the widths of the upper runway 311 and the lower runway 321 can be designed to be relatively small, which is beneficial to reduce the processing cost. Of course, it is also not excluded that in some other models, a wider runway is needed, W2 is greater than W1, and W4 is greater than W3, to further improve the stability of the operation of the shuttle 400. As shown in Figure 8 , the sizes of W1 and W3 are reduced, the overall width of the door ring assembly is reduced, the amount of metal material is reduced, which is beneficial to reduce the cost, and also beneficial to reduce the probability of contact between the warp yarns and the first avoiding surface 312 and the second avoiding surface 322.

[0040] In order to reduce the abrasion effect of the door ring assembly on the warp yarns, the first avoiding surface 312 and the upper runway 311 are transitioned through the first round corner 313, the radius R1 of the first round corner 313 is 1-5mm, the second avoiding surface 322 and the lower runway 321 are transitioned through the second round corner 323, and the radius R2 of the second round corner 323 is 1-5mm. Since the warp yarns are inevitably bent when passing through the door ring assembly, the transition through the first round corner 313 and the second round corner 323 can guide the warp yarns to naturally bend, reduce the frictional resistance when contacting, and will not seriously scratch the surface of the warp yarns.

[0041] In one embodiment, the first avoiding surface and the second avoiding surface are both conical surfaces, the angle A1 of the first avoiding surface 312 relative to the horizontal plane is ≥10°, and the angle A2 of the second avoiding surface 322 relative to the horizontal plane is ≥10°. Since the shuttle makes circular motion and generates relatively large periodic vibration to the door ring assembly, the first avoiding surface and the second avoiding surface are both designed as conical surfaces, and A1 and A2 are selected at a reasonable angle, so that the vibration of the door ring assembly can make the dust on the first avoiding surface and the second avoiding surface vibrate and fall off, reducing the accumulation speed of the dust on the first avoiding surface and the second avoiding surface. At the same time, the structure of the door ring without the separating reed and the conical surface also makes it easier to clean the dust on the first avoiding surface and the second avoiding surface, avoiding the accumulation of dust to be too high to cause the warp yarns to stretch when passing through due to friction and heat, which affects the weaving quality.

[0042] In addition to the conical surface, the first and second relief surfaces 312 and 322 can also adopt an arc surface, for example Figure 6 the concave arc surface shown, of course, the convex arc surface is also feasible, can also be selected Figure 7 the concave fold surface shown, or other common surface structure, as long as it is ensured that it does not contact the warp yarn, and since the first and second relief surfaces 312 and 322 have a height change from inside to outside, the vibration caused by the shuttle movement can reduce the dust accumulation speed, and the dust accumulation is also relatively easy to clean.

[0043] In addition to the preferred embodiments described above, the utility model also has other implementation manners, based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the range of the utility model claimed.

Claims

1. A plastic circular weaving machine comprising a main machine, the main machine comprising a heddle ring assembly, a warp shedding assembly and a shuttle, the warp shedding assembly being located on the periphery side of the heddle ring assembly, the warp shedding assembly comprising an outer heald, an inner heald and a harness band, the outer heald having an outer heald eye for a warp thread to pass through, the inner heald having an inner heald eye for a warp thread to pass through, the harness band being connected between the outer heald and the inner heald and being driven by a swing lever assembly to cause the outer heald and the inner heald to move alternately up and down to cause the warp thread passing through the outer heald eye to shed with the warp thread passing through the inner heald eye, the heddle ring assembly comprising an upper heddle ring and a lower heddle ring, the lower surface of the upper heddle ring being provided with an upper raceway, the upper surface of the lower heddle ring being provided with a lower raceway, the shuttle moving in a circular motion along the upper raceway and the lower raceway, characterized in that, The lower surface of the upper door ring is further provided with a first avoiding surface, which is located at the outer circumferential side of the upper raceway and extends from the outer circumferential side of the upper raceway to the outer circumferential side of the upper door ring, and the upper surface of the lower door ring is further provided with a second avoiding surface, which is located at the outer circumferential side of the lower raceway and extends from the outer circumferential side of the lower raceway to the outer circumferential side of the lower door ring, the first avoiding surface gradually decreases in height from the outer circumferential side to the inside, the second avoiding surface gradually increases in height from the outer circumferential side to the inside, the outer circumferential edge of the first avoiding surface is higher than the highest travel point of the outer and inner heald eyes, the outer circumferential edge of the second avoiding surface is lower than the lowest travel point of the outer and inner heald eyes, and there is no division reed door between the upper door ring and the lower door ring.

2. The plastic circular weaving machine according to claim 1, characterized in that The upper raceway and the lower raceway are both conical surfaces, the upper raceway is inclined upward from the outside to the inside, and the lower raceway is inclined downward from the outside to the inside.

3. A plastic circular weaving machine according to claim 2, characterized in that The shuttle has an outer guide rod, the yarn is introduced into the central area of the door ring assembly through the upper edge or the lower edge of the outer guide rod after passing through the door ring assembly, the upper edge of the outer guide rod is located on the conical surface where the upper raceway is located, and the lower edge of the outer guide rod is located on the conical surface where the lower raceway is located.

4. The plastic circular weaving machine of claim 1, wherein, The shuttle has an upper shuttle wheel and a lower shuttle wheel, the upper shuttle wheel rolls along the upper raceway, and the lower shuttle wheel rolls along the lower raceway.

5. A plastic circular weaving machine according to claim 4, characterized in that The upper shuttle wheel and the lower shuttle wheel are both cylindrical wheels, the rotation axis of the upper shuttle wheel is parallel to the upper raceway, and the rotation axis of the lower shuttle wheel is parallel to the lower raceway.

6. The plastic circular weaving machine of claim 1, wherein, The upper raceway and the lower raceway are both planes.

7. The plastic circular weaving machine of claim 1, wherein, The first avoiding surface and the upper raceway are connected through a first round corner, the radius R1 of the first round corner is 1-5 mm, the second avoiding surface and the lower raceway are connected through a second round corner, and the radius R2 of the second round corner is 1-5 mm.

8. The plastic circular weaving machine of claim 1, wherein, The first avoiding surface and the second avoiding surface are both conical surfaces, the angle A1 of the first avoiding surface relative to the horizontal plane is greater than or equal to 10°, and the angle A2 of the second avoiding surface relative to the horizontal plane is greater than or equal to 10°.

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