Biodegradable woven bag weft feeding mechanism

Abstract

The utility model discloses a biodegradable woven bag weft feeding mechanism. The biodegradable woven bag weft feeding mechanism comprises a track fixed on a rack, a plurality of shuttles, a material guide disc and a tension band, a mounting rod is fixed in the middle of the rack; a driving mechanism is arranged on the rack; the driving mechanism comprises a weaving motor, a plurality of driving rods and a driving sleeve; the driving sleeve is rotationally arranged outside the mounting rod; the material guide disc is detachably mounted at the upper end of the mounting rod through a mounting bolt, and a lapping groove is formed in the outer edge of the upper end of the material guide disc; the tension sleeves are arranged on the outer side of the upper end of the material guide disc at intervals in a sleeving manner, and are detachably mounted on the track through connecting pieces; the shuttles are circumferentially arranged on the outer side of the guide disc at intervals, the inner ends of the shuttles abut against the lapping grooves, and the outer ends of the shuttles are arranged on the rails in a sliding mode; the inner end of the driving rod is fixedly connected with the driving sleeve, and the outer end of the driving rod is located on one side of the shuttle. The knitting motor is connected with the driving sleeve, and the knitting motor drives the driving rod to rotate to drive the shuttle to do circular motion along the track.

Description

TECHNICAL FIELD

[0001] The utility model relates to braiding equipment technical field, and specifically is a kind of biodegradable braided bag weft feeding mechanism. BACKGROUND

[0002] In actual production process, biodegradable warp and weft are interwoven by cylindrical braiding machine to produce braided bag, so as to produce braided bag quickly and in batch.The weft feeding mechanism of existing braiding machine is relatively complex, and it is difficult to flexibly adjust according to the size of braided bag produced in actual production, and the flexibility is poor, and it is difficult to meet the actual production demand. UTILITY MODEL CONTENTS

[0003] The utility model discloses a kind of biodegradable braided bag weft feeding mechanism, the material guide disc and hoop of the biodegradable braided bag weft feeding mechanism are respectively detachably installed on mounting rod and track, and shuttle can be radially adjusted length, can be installed according to the size of braided bag required in actual production, select appropriate size material guide disc and hoop, can meet the production demand of braided bag of different size, strong flexibility, good use effect.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A kind of biodegradable braided bag weft feeding mechanism, including track fixed on rack, multiple for releasing weft shuttle, material guide disc and hoop;The middle part of the rack is fixed with mounting rod;Drive mechanism is provided on the rack;The drive mechanism includes braiding motor, multiple drive rods and drive sleeve;The drive sleeve is rotationally arranged on the outside of mounting rod;The material guide disc is detachably installed on the upper end of mounting rod by mounting bolt, and the outer edge of the upper end of material guide disc is provided with notch;The hoop is spacedly arranged on the outside of the upper end of material guide disc, and the hoop is detachably installed on track by connecting piece, and braided bag is worn from the gap between hoop and material guide disc upwards;The shuttle is circumferentially spaced apart on the outside of material guide disc, and the inner end of radially adjustable length shuttle is abutted on notch, and the outer end of shuttle is slidably arranged on track;The inner end of drive rod is fixedly connected with drive sleeve, and the outer end of drive rod is located on one side of shuttle;The braiding motor is connected with drive sleeve, and the drive rod on drive sleeve is rotated by braiding motor to drive shuttle to make circumferential motion along track.

[0006] Further, the track comprises an upper door ring, a lower door ring and a plurality of connecting rods; the upper door ring and the lower door ring are arranged oppositely, and the upper ends and the lower ends of the connecting rods are fixedly connected with the upper door ring and the lower door ring respectively; a plurality of support plates are arranged on the upper end of the upper door ring; the outer ends of the support plates are fixedly connected with the upper door ring, and the inner ends of the support plates are spacedly provided with a plurality of mounting holes; the number of the connecting members is plural, and the connecting members comprise support screws and two support nuts; the lower ends of the support screws are fixedly connected with the hoops, the upper ends of the support screws are arranged in the mounting holes, and the support nuts are arranged on the support screws at the upper end and the lower end of the support plate respectively.

[0007] Further, the shuttle comprises a sliding block, a yarn feeding mechanism for placing a coiled weft, a support arm and an inclined support; the sliding block is slidingly arranged on the track; the yarn feeding mechanism is arranged on the inner side of the sliding block; the support arm comprises a support square tube, a moving square tube, a fastening bolt and an abutting wheel; the outer end of the support square tube is hingedly connected with one end of the sliding block, and the inner end of the support square tube is sleeved on the outer end of the moving square tube; the fastening bolt is threadedly connected with the support square tube and tightly abuts on the moving square tube at the inner end thereof; the abutting wheel is rotatably arranged at the inner end of the moving square tube and tightly abuts on the notch; the inclined support comprises a bidirectional screw and two connecting tubes; the screw threads at the two ends of the bidirectional screw are opposite in direction, and the two connecting tubes are threadedly connected with the two ends of the bidirectional screw respectively; one of the connecting tubes is hingedly connected with the other end of the sliding block, and the other connecting tube is hingedly connected with the moving square tube, and the two connecting tubes are brought close to or away from each other by rotating the bidirectional screw.

[0008] Further, the yarn feeding mechanism comprises a limiting block, a protruding rod, a fixed plate, a hanging rod, a limiting plate, a limiting spring and a stopper; the limiting block is fixedly connected with one side of the sliding block, and the fixed plate is fixedly connected with the other side of the sliding block; the hanging rod is arranged in the fixed plate and the outer end thereof is fixedly connected with the stopper; the limiting plate is fixed on the hanging rod close to the limiting block; the limiting spring is sleeved on the hanging rod between the limiting plate and the fixed plate; the protruding rod is fixed on the limiting block close to the hanging rod, and the two ends of the coiled weft are sleeved on the protruding rod and the hanging rod respectively, and a gap is left between the limiting block, the limiting plate and the coiled weft, and the coiled weft is installed and dismounted by pressing the limiting plate to move the hanging rod.

[0009] Further, the moving square tube is fixedly provided with a hanging ring close to the abutting wheel, and the free end of the weft thread is arranged through the hanging ring to interweave with the warp at the notch.

[0010] Further, first pulleys are rotatably arranged at the upper end and the lower end of the sliding block respectively, the first pulley at the upper end abuts on the lower end of the upper door ring, and the first pulley at the lower end abuts on the upper end of the lower door ring; the outer ends of the upper side and the lower side of the sliding block are rotatably provided with second pulleys respectively; the cross sections of the upper door ring and the lower door ring are "L" shaped, and the inner sides of the upper door ring and the lower door ring are provided with an upper groove and a lower groove respectively, the second pulley at the upper side abuts in the upper groove, and the second pulley at the lower side abuts in the lower groove.

[0011] Further, the outer end of the driving rod is rotationally provided with a driving wheel, and the rear end of the sliding block is rotationally provided with a driven wheel; the lower end of the driven wheel abuts against the driving wheel near the sliding block, and the driving wheel pushes the driven wheel to drive the sliding block to make a circular motion along the track.

[0012] After the above technical scheme is adopted, the utility model has the following beneficial effects:

[0013] 1. The weft feeding mechanism for biodegradable woven bags has the following advantages: the guide disc and the hoop are respectively detachably installed on the installation rod and the track, the shuttle can be radially adjusted in length, the guide disc and the hoop of appropriate size can be selected and installed according to the size of the woven bag required by actual production, the woven bag production requirements of different sizes can be met, the flexibility is high, and the use effect is good.

[0014] 2. The weft feeding mechanism for biodegradable woven bags has the following advantages: the lower end of the supporting screw rod is fixedly connected with the hoop, the upper end of the supporting screw rod is provided in the installation hole, the supporting nuts are respectively arranged on the supporting screw rods at the upper and lower ends of the supporting plate, the hoop can be locked on the supporting plate, the installation and dismounting of the hoop can be quickly realized, and the hoop of different sizes can be replaced.

[0015] 3. The weft feeding mechanism for biodegradable woven bags has the following advantages: the fastening bolt is screw-connected with the supporting square tube and tightly abuts against the moving square tube at the inner end, the actual length of the supporting arm can be quickly adjusted according to the actual size of the guide disc, the two connecting pipes are driven to move close to or away from each other through the rotating bidirectional screw rod, the sliding block, the supporting arm and the inclined strut can form a stable triangular structure, and the shuttle can be stably installed between the guide disc and the track.

[0016] 4. The weft feeding mechanism for biodegradable woven bags has the following advantages: the two ends of the roll-shaped weft are respectively sleeved on the convex rod and the hanging rod, and gaps are left between the limiting block, the limiting plate and the roll-shaped weft, the hanging rod can be moved to one side of the fixed plate by pressing the limiting plate outward, the distance between the convex rod and the hanging rod is increased, the roll-shaped weft can be conveniently put in or taken out, the hanging rod is inserted into the middle cavity of the roll-shaped weft under the restoring force of the limiting spring after the limiting plate is released, the roll-shaped weft can be quickly installed outside the convex rod and the hanging rod, the operation is simple, and the use effect is good.

[0017] 5. The weft feeding mechanism for biodegradable woven bags has the following advantages: the upper end of the first pulley abuts against the lower end of the upper door hoop, the lower end of the first pulley abuts against the upper end of the lower door hoop, the upper side of the second pulley abuts against the upper recess, and the lower side of the second pulley abuts against the lower recess, so that the sliding block can be stably and slidably installed on the track, and the use effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a top view structural schematic diagram of the utility model.

[0019] Figure 2 It is the cut structure schematic view of the track of the utility model;

[0020] Figure 3 It is the overhead structure schematic view of the shuttle of the utility model;

[0021] Figure 4 It is the three-dimensional structure schematic view of the material guiding disc and the hoop of the utility model;

[0022] Figure 5 It is the cut structure schematic view of the material guiding disc of the utility model;

[0023] Figure 6 It is the structure schematic view of the rack, the material guiding disc and the driving mechanism of the utility model.

[0024] The reference signs in the drawing represent:

[0025] 1, rack;11, mounting rod;2, track;20, upper door ring;200, upper groove;21, lower door ring;210, lower groove;22, connecting rod;23, support plate;230, mounting hole;3, shuttle;30, sliding block;300, first pulley;301, second pulley;302, driven wheel;31, pay-off mechanism;310, limit block;311, protruding rod;312, fixed plate;313, hanging rod;314, limit plate;315, limit spring;316, stop block;32, support arm;320, support square tube;321, moving square tube;322, fastening bolt;323, abutting wheel;324, wire hanging ring;33, inclined strut;330, bidirectional screw;331, connecting pipe;4, material guiding disc;40, mounting groove;41, mounting bolt;5, hoop;50, connecting piece;500, support screw;501, support nut;6, driving mechanism;60, braiding motor;61, driving rod;610, driving wheel;62, driving sleeve. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0027] Please refer to Figures 1 to 6The utility model provides a kind of biodegradable braided bag weft feeding mechanism, including track 2 fixed on frame 1, a plurality of shuttles 3 for releasing weft, guide disc 4 and hoop 5;The middle part of the frame 1 is fixed with mounting rod 11;Drive mechanism 6 is provided on the frame 1;The drive mechanism 6 includes braiding motor 60, a plurality of drive rods 61 and drive sleeve 62;Drive sleeve 62 is rotationally arranged outside mounting rod 11;Guide disc 4 is detachably installed on the upper end of mounting rod 11 by mounting bolt 41, and the outer edge of the upper end of guide disc 4 is provided with a notch 40;The hoop 5 is spacedly sleeved on the outer side of the upper end of guide disc 4, and the hoop 5 is detachably installed on the track 2 by connecting piece 50, and the braided bag is woven from the gap between the hoop 5 and the guide disc 4 upwards;The shuttles 3 are circumferentially spaced on the outer side of the guide disc 4, and the inner end of the radially adjustable length of the shuttle 3 abuts on the notch 40, and the outer end of the shuttle 3 is slidably arranged on the track 2;The inner end of the drive rod 61 is fixedly connected with the drive sleeve 62, and the outer end of the drive rod 61 is located on one side of the shuttle 3;The braiding motor 60 is connected with the drive sleeve 62, and the drive rod 61 on the drive sleeve 62 is rotated by the braiding motor 60 to drive the shuttle 3 to move along the track 2 in a circular motion.

[0028] Please refer to Figures 1 to 2 The track 2 includes upper door ring 20, lower door ring 21 and a plurality of connecting rods 22;The upper door ring 20 and the lower door ring 21 are arranged oppositely, and the upper and lower ends of the connecting rod 22 are fixedly connected with the upper door ring 20 and the lower door ring 21 respectively;A plurality of support plates 23 are arranged on the upper end of the upper door ring 20;The outer end of the support plate 23 is fixedly connected with the upper door ring 20, and a plurality of mounting holes 230 are arranged at intervals on the inner end of the support plate 23;The number of connecting pieces 50 is multiple, and the connecting piece 50 includes support screw 500 and two support nuts 501;The lower end of the support screw 500 is fixedly connected with the hoop 5, the upper end of the support screw 500 is arranged in the mounting hole 230, and the support nuts 501 are arranged on the support screw 500 on the upper and lower ends of the support plate 23 respectively.

[0029] Please refer to Figures 1 to 2The shuttle 3 comprises a sliding block 30, a yarn feeding mechanism 31 for placing a roll-shaped weft, a supporting arm 32 and a diagonal support 33. The sliding block 30 is slidingly arranged on the track 2. The yarn feeding mechanism 31 is arranged inside the sliding block 30. The supporting arm 32 comprises a supporting square tube 320, a moving square tube 321, a fastening bolt 322 and an abutting wheel 323. The outer end of the supporting square tube 320 is hingedly connected to one end of the sliding block 30, and the inner end of the supporting square tube 320 is sleeved on the outside of the moving square tube 321. The fastening bolt 322 is threadedly connected with the supporting square tube 320 and tightly abuts on the inner end of the moving square tube 321. The abutting wheel 323 is rotationally arranged on the inner end of the moving square tube 321 and tightly abuts on the notch 40. The diagonal support 33 comprises a bidirectional screw rod 330 and two connecting tubes 331. The threads on the two ends of the bidirectional screw rod 330 are in opposite directions, and the two connecting tubes 331 are threadedly connected with the two ends of the bidirectional screw rod 330 respectively. One of the connecting tubes 331 is hingedly connected to the other end of the sliding block 30, and the other connecting tube 331 is hingedly connected to the moving square tube 321, so that the two connecting tubes 331 are brought close to or away from each other by rotating the bidirectional screw rod 330.

[0030] Please refer to Figure 1 and Figure 3 The yarn feeding mechanism 31 comprises a limiting block 310, a protruding rod 311, a fixed plate 312, a hanging rod 313, a limiting plate 314, a limiting spring 315 and a stop block 316. The limiting block 310 is fixedly connected with one side of the sliding block 30, and the fixed plate 312 is fixedly connected with the other side of the sliding block 30. The hanging rod 313 is arranged through the fixed plate 312, and the outer end of the hanging rod 313 is fixedly connected with the stop block 316. The limiting plate 314 is fixed on the hanging rod 313 close to the limiting block 310. The limiting spring 315 is sleeved on the hanging rod 313 between the limiting plate 314 and the fixed plate 312. The protruding rod 311 is fixed on the limiting block 310 close to the hanging rod 313. The two ends of the roll-shaped weft are sleeved on the protruding rod 311 and the hanging rod 313 respectively, and a gap is left between the limiting block 310, the limiting plate 314 and the roll-shaped weft. The installation and removal of the roll-shaped weft are realized by pressing the limiting plate 314 to move the hanging rod 313.

[0031] Please refer to Figure 1 and Figure 3 The moving square tube 321 is fixed with a wire hanging ring 324 close to the abutting wheel 323. The free end of the weft thread passes through the wire hanging ring 324 to interweave with the warp thread at the notch 40.

[0032] Please refer to Figures 1 to 3The upper and lower ends of the sliding block 30 are respectively provided with a first pulley 300, and the upper end of the first pulley 300 abuts against the lower end of the upper door frame 20, and the lower end of the first pulley 300 abuts against the upper end of the lower door frame 21; the outer ends of the upper and lower sides of the sliding block 30 are respectively provided with a second pulley 301; the cross sections of the upper door frame 20 and the lower door frame 21 are "L" shaped, and the inner sides of the upper door frame 20 and the lower door frame 21 are respectively provided with an upper groove 200 and a lower groove 210, and the upper side of the second pulley 301 abuts against the upper groove 200, and the lower side of the second pulley 301 abuts against the lower groove 210.

[0033] Please refer to Figure 1 , Figure 3 and Figure 6 , the outer end of the driving rod 61 is rotatably provided with a driving wheel 610, and the lower side of the rear end of the sliding block 30 is rotatably provided with a driven wheel 302; the lower end of the driven wheel 302 abuts against the driving wheel 610 close to the sliding block 30, and the driving wheel 610 drives the driven wheel 302 to drive the sliding block 30 to move in a circle along the track 2.

[0034] It can be understood that "multiple" in the present disclosure refers to two or more, and other quantifiers are similar. The association relationship between the associated objects is described, which means that there can be three relationships, for example, A and / or B, which means that there are three cases: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship. The singular forms "a", "said" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0035] It can be further understood that the terms "first", "second", and the like are used to describe various information, but these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not represent a specific order or importance. In fact, the expressions "first", "second", etc. can be completely interchangeable. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present disclosure.

[0036] It can be further understood that the terms "center", "longitudinal", "transverse", "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation.

[0037] It will be further understood that "connected" can include direct connection between two elements and "coupled" can include indirect connection between two elements via some intermediary element that allows a signal to be sent from one to the other.

[0038] It will be further understood that, unless otherwise specified, "or" as used herein is generally intended to mean "and / or" so that, for example, a condition A or B is satisfied by any one of the following: A is true (or present) and B is false (or not present), A is false (or not present) and B is true (or present), and both A and B are true (or present).

[0039] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features of the disclosure disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

[0040] The above descriptions are only the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A biodegradable braided bag weft feed mechanism characterized by: The utility model provides a weaving machine, including the track (2) fixed on the frame (1), a plurality of shuttle (3) for putting out weft, material guide disc (4) and hoop (5), the middle part of frame (1) is fixed with mounting rod (11), be provided with drive mechanism (6) on frame (1), drive mechanism (6) includes weaving motor (60), a plurality of drive rod (61) and drive sleeve (62), drive sleeve (62) rotationally arranged in the outside of mounting rod (11), material guide disc (4) is detachably installed on the upper end of mounting rod (11) through mounting bolt (41), and the outer edge of the upper end of material guide disc (4) is provided with a notch (40), hoop (5) is spacedly arranged on the outside of the upper end of material guide disc (4), and hoop (5) is detachably installed on track (2) through connecting piece (50), and the woven woven bag is worn out from the gap between hoop (5) and material guide disc (4) upwards, shuttle (3) is circumferentially spaced and arranged on the outside of material guide disc (4), and the inner end of length-adjustable radial shuttle (3) abuts on notch (40), and the outer end of shuttle (3) is slidably arranged on track (2), the inner end of drive rod (61) is fixedly connected with drive sleeve (62), and the outer end of drive rod (61) is located on one side of shuttle (3), weaving motor (60) is connected with drive sleeve (62), and drive rod (61) on drive sleeve (62) is rotated by weaving motor (60) to drive shuttle (3) to make circular motion along track (2).

2. A biodegradable braided bag weft feeding mechanism as claimed in claim 1, wherein: The track (2) includes an upper door ring (20), a lower door ring (21) and a plurality of connecting rods (22); the upper door ring (20) and the lower door ring (21) are arranged oppositely, and the upper and lower ends of the connecting rods (22) are fixedly connected with the upper door ring (20) and the lower door ring (21) respectively; a plurality of support plates (23) are arranged on the upper end of the upper door ring (20); the outer end of the support plate (23) is fixedly connected with the upper door ring (20), and a plurality of mounting holes (230) are arranged at the inner end of the support plate (23) at intervals; the number of the connecting pieces (50) is a plurality, and the connecting piece (50) includes a support screw (500) and two support nuts (501); the lower end of the support screw (500) is fixedly connected with the hoop (5), the upper end of the support screw (500) is arranged in the mounting hole (230), and the support nuts (501) are arranged on the support screw (500) at the upper and lower ends of the support plate (23) respectively.

3. A biodegradable braided bag weft feeding mechanism as claimed in claim 2, wherein: The shuttle (3) comprises a sliding block (30), a yarn feeding mechanism (31) for placing a roll-shaped weft, a support arm (32) and a diagonal support (33); the sliding block (30) is slidingly arranged on the track (2); the yarn feeding mechanism (31) is arranged inside the sliding block (30); the support arm (32) comprises a support square tube (320), a moving square tube (321), a fastening bolt (322) and an abutting wheel (323); the outer end of the support square tube (320) is hingedly connected with one end of the sliding block (30), and the inner end of the support square tube (320) is sleeved on the outside of the moving square tube (321); the fastening bolt (322) is threadedly connected with the support square tube (320) and tightly abuts on the moving square tube (321) at the inner end thereof; the abutting wheel (323) is rotationally arranged at the inner end of the moving square tube (321) and tightly abuts on the notch (40); the diagonal support (33) comprises a bidirectional screw rod (330) and two connecting tubes (331); the screw threads at the two ends of the bidirectional screw rod (330) are opposite in direction, and the two connecting tubes (331) are threadedly connected with the two ends of the bidirectional screw rod (330) respectively; one of the connecting tubes (331) is hingedly connected with the other end of the sliding block (30), and the other connecting tube (331) is hingedly connected with the moving square tube (321), and the two connecting tubes (331) are brought close to or away from each other by rotating the bidirectional screw rod (330).

4. A biodegradable braided bag weft thread feeding mechanism as claimed in claim 3, characterized in that: The yarn feeding mechanism (31) comprises a limiting block (310), a protruding rod (311), a fixed plate (312), a hanging rod (313), a limiting plate (314), a limiting spring (315) and a stop block (316); the limiting block (310) is fixedly connected with one side of the sliding block (30), and the fixed plate (312) is fixedly connected with the other side of the sliding block (30); the hanging rod (313) is arranged through the fixed plate (312) and the outer end thereof is fixedly connected with the stop block (316); the limiting plate (314) is fixed on the hanging rod (313) close to the limiting block (310); the limiting spring (315) is sleeved on the hanging rod (313) between the limiting plate (314) and the fixed plate (312); the protruding rod (311) is fixed on the limiting block (310) close to the hanging rod (313), the two ends of the roll-shaped weft are sleeved on the protruding rod (311) and the hanging rod (313) respectively, and a gap is left between the limiting block (310), the limiting plate (314) and the roll-shaped weft, and the roll-shaped weft is installed and removed by pressing the limiting plate (314) to drive the hanging rod (313) to move.

5. A biodegradable braided bag weft thread feeding mechanism as claimed in claim 3, characterized in that: The moving square tube (321) is fixed with a thread hanging ring (324) at the end close to the abutting wheel (323), and the free end of the weft passes through the thread hanging ring (324) to interweave with the warp at the notch (40).

6. A biodegradable braided bag weft thread feeding mechanism as claimed in claim 3, characterized in that: The upper and lower ends of the sliding block (30) are respectively provided with a first pulley (300), and the upper end of the first pulley (300) abuts against the lower end of the upper door ring (20), and the lower end of the first pulley (300) abuts against the upper end of the lower door ring (21); the outer ends of the upper and lower sides of the sliding block (30) are respectively provided with a second pulley (301); the cross sections of the upper door ring (20) and the lower door ring (21) are "L" shapes, and the inner sides of the upper door ring (20) and the lower door ring (21) are respectively provided with an upper groove (200) and a lower groove (210), and the upper second pulley (301) abuts against the upper groove (200), and the lower second pulley (301) abuts against the lower groove (210).

7. A biodegradable braided bag weft feeding mechanism as claimed in claim 3, wherein: The outer end of the driving rod (61) is provided with a driving wheel (610), and the lower side of the rear end of the sliding block (30) is provided with a driven wheel (302); the lower end of the driven wheel (302) abuts against the driving wheel (610) close to the sliding block (30), and the driving wheel (610) drives the driven wheel (302) to drive the sliding block (30) to move along the track (2).

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