Collapsible shuttle structure
By designing a retractable shuttle structure and using an openable yarn guard and tension springs to adjust the weft yarn tension, the problem of uneven warp yarn tension caused by the shuttle structure was solved, thus improving weaving efficiency and product quality.
Patent Information
- Application Number
- CN202522215852.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-21
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-21
AI Technical Summary
In existing plastic woven bag production equipment, the shuttle structure leads to uneven warp tension, resulting in warp damage and yarn breakage, which affects weaving efficiency and product quality.
A retractable shuttle structure is designed, with a yarn protector frame that can be opened and closed on both sides. The weft yarn tension is adjusted by first and second tension springs to protect the weft yarn from contacting the warp yarn when it is pulled out. Combined with guide rails and sliders, the yarn protector frame can be adjusted to retract, ensuring stable weft yarn feeding.
It effectively reduced warp yarn splitting and breakage, improved fabric quality and equipment production efficiency, reduced warp tension by 12%, reduced warp tensile loss by 3%, and increased production efficiency by 8%.
Smart Images
Figure CN224678252U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of plastic flat yarn weaving, and in particular to a shrinkable shuttle structure. Background Technology
[0002] In the packaging industry, plastic flat woven bags and their products are widely used in industry, agriculture, and people's daily lives. The most important production equipment for plastic woven bags is the circular loom. The shuttle, the component that feeds the weft yarn during the weaving process, is particularly important, as its structure directly affects product quality and production efficiency. Currently, the key factors affecting weaving efficiency are warp yarn damage, splitting, and breakage. With the continuous decline in warp yarn strength in the market, improving the working environment of warp yarn weaving and reducing warp yarn weaving tension has become especially important.
[0003] The warp tension, besides the tension of the heddle, consists of two parts: one is the expansion driven by the heddles for opening and closing, which is unchangeable due to the dimensions of the shuttle structure and the integrated system. The other part is the expansion of the shuttle guard, which is determined by the diameter of the weft spindle and its height position within the shuttle.
[0004] Therefore, a shuttle body is proposed that can automatically reduce the width of the yarn guard as the diameter of the weft spindle decreases. During weaving, the weft yarn is continuously pulled out from the surface of the weft spindle, and the diameter of the weft spindle also decreases accordingly. Moreover, the weft spindle is not at its maximum diameter most of the time. Utility Model Content
[0005] Technical objective: In order to overcome the shortcomings of the existing technology, this utility model provides a retractable shuttle structure.
[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: It includes a shuttle body, and yarn guards are provided on both sides of the shuttle body; guide rails are provided at both ends of the center line of the shuttle body, and a first conical sleeve and a second conical sleeve are provided opposite to each other at the other end of the guide rails. A slider is provided between the first conical sleeve and the second conical sleeve and the guide rail. A telescopic rod is provided at the other end of the first conical sleeve, and a return spring is provided on the side of the telescopic rod. The other end of the return spring is fixed to the surface of the guide rail. A first tension spring is connected between one end of the two yarn guards. The first tension spring is located below the telescopic rod. A second tension spring is connected between the other ends of the two yarn guards. The second tension spring is located below the second conical sleeve. Both the first tension spring and the second tension spring are located on the opposite inner sides of the guide rails at both ends of the shuttle body.
[0007] Preferably, the bottom of the shuttle body has a support block at its center, and connecting rods are symmetrically arranged at the center of both sides of the support block. A wheel axle is vertically arranged at the other end of the connecting rod, and bottom wheels are arranged at both ends of the wheel axle. Bearings are arranged inside the bottom wheels, and a groove is arranged at the center of the bottom wheels.
[0008] Preferably, the top surface of the support block is provided with an installation block, and the other end of the installation block is provided with a weft spindle, which is located between two yarn guards.
[0009] Preferably, the bottom surface of the shuttle body is provided with multiple shuttle wheels, the position and number of the shuttle wheels correspond to the position and number of the bottom wheel, the center line of the shuttle wheels coincides with the axis of the bottom wheel, and the multiple shuttle wheels are all located on one side of the bottom wheel.
[0010] Preferably, the bottom end of the slot extends beyond the bottom surface of the shuttle body, and a guide ring assembly is provided at the bottom end of the slot. The guide ring assembly includes an upper guide ring, a lower guide ring, and a round steel reed, with the upper and lower guide rings symmetrically distributed on both sides of the round steel reed.
[0011] Preferably, a vertical plate is provided at the center of one end of the shuttle body, the other end of the vertical plate is located above the shuttle body, a turntable is provided at the other end of the vertical plate, and a weft insertion rod is provided at the other end of the turntable.
[0012] Preferably, the shuttle body is provided with a tail wheel at one end of the second conical sleeve, and the tail wheel is located on the rear side of the second conical sleeve.
[0013] The beneficial effects of this utility model are:
[0014] 1. This utility model provides a retractable shuttle structure, which adopts a two-sided openable structure for the yarn guard. The two ends of the two yarn guards are driven by the first tension spring to descend and finally clamp the inner side of the yarn guard on the surface of the weft spindle, while the outer side contacts the warp yarn with tension, so as to protect the weft yarn from contacting the warp yarn when it is pulled out.
[0015] 2. This utility model provides a retractable shuttle structure. By replacing the first and second tension springs of the yarn protector, the weft tension is adjustable while the warp tension decreases on average, thereby effectively reducing warp yarn splitting and breakage, improving fabric quality, reducing warp tension loss, and increasing equipment production efficiency. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the retractable shuttle body of this utility model;
[0017] Figure 2 This is a top view of the retractable shuttle structure of this utility model;
[0018] Figure 3 This is a partial structural diagram of the retractable shuttle body structure of this utility model. Figure 1 ;
[0019] Figure 4 This is a partial structural diagram of the retractable shuttle body structure of this utility model. Figure 2 ;
[0020] Figure 5 This is a schematic diagram of the left cross-sectional view of the retractable shuttle structure of this utility model.
[0021] Explanation of reference numerals in the attached figures:
[0022] 1. Shuttle body; 11. Yarn guard; 2. Guide ring assembly; 21. Upper guide ring; 22. Lower guide ring; 23. Round reed; 3. Vertical plate; 31. Turntable; 32. Weft insertion rod; 4. Guide rail; 5. Bottom support block; 51. Connecting rod; 52. Wheel axle; 53. Bottom wheel; 54. Slot; 55. Bearing; 56. Mounting block; 57. Weft spindle; 6. Shuttle wheel; 7. First cone sleeve; 71. Second cone sleeve; 72. Telescopic rod; 73. Slider; 74. Return spring; 8. Tail wheel; 9. First tension spring; 91. Second tension spring. Detailed Implementation
[0023] The following is in conjunction with the appendix Figure 1 To be continued Figure 5 The principles and features of this utility model are described, and the examples given are only used to explain this utility model and are not intended to limit the scope of this utility model.
[0024] Please see Figures 1-5 A retractable shuttle structure includes a shuttle 1, with yarn guards 11 on both sides of the shuttle 1; guide rails 4 are provided at both ends of the center line of the shuttle 1, and a first conical sleeve 7 and a second conical sleeve 71 are provided opposite to each other at the other end of the guide rails 4. A slider 73 is provided between the first conical sleeve 7, the second conical sleeve 71 and the guide rails 4; a telescopic rod 72 is provided at the other end of the first conical sleeve 7, and a return spring 74 is provided on the side of the telescopic rod 72, with the other end of the return spring 74 fixed to the surface of the guide rail 4; a first tension spring 9 is connected between one end of the two yarn guards 11, located below the telescopic rod 72; a second tension spring 91 is connected between the other ends of the two yarn guards 11, located below the second conical sleeve 71. The first and second tension springs 91 are both located on the opposite inner sides of the guide rails 4 at both ends of the shuttle body 1; the yarn guards 11 on both sides of the shuttle body 1 are respectively hinged to the ends of the shuttle body 1, so that the yarn guards 11 on both sides of the shuttle body 1 can be deflected independently of the yarn guards 11, so that the two yarn guards 11 can open and close; the first cone sleeve 7 and the second cone sleeve 71 are coaxially arranged, and the first cone sleeve 7 and the second cone sleeve 71 are provided with bearings inside. The first cone sleeve 7 and the second cone sleeve 71 can slide in the guide rail 4 through the guide rail 4 and the slider 73. The first cone sleeve 7 can be driven to move and reset through the telescopic rod 72 and the return spring 74; the first tension spring 9 and the second tension spring 91 can open and close the pair of yarn guards 11, which does not affect the movement between the first cone sleeve 7 and the second cone sleeve 71.
[0025] Please see Figures 1-5The bottom of the shuttle body 1 has a support block 5 at its center. Connecting rods 51 are symmetrically arranged at the center of both sides of the support block 5. A wheel axle 52 is vertically arranged at the other end of the connecting rod 51. Bottom wheels 53 are arranged at both ends of the wheel axle 52. Bearings 55 are arranged inside the bottom wheels 53. A groove 54 is arranged at the center of the bottom wheels 53. The bottom wheels 53 with built-in bearings 55 are mounted on the shuttle body 1. The bottom wheels 53 are mounted on the shuttle body 1 through the connecting rods 51 and the wheel axle 52. The groove 54 is provided on the bottom wheels 53 to facilitate the movement of the bottom wheels 53 within the fixed track.
[0026] Please see Figures 1-5 The top surface of the support block 5 is provided with an installation block 56, and the other end of the installation block 56 is provided with a weft spindle 57. The weft spindle 57 is located between two yarn guards 11. The weft spindle 57 is clamped between the first cone sleeve 7 and the second cone sleeve 71 by the movable telescopic rod 72. The weft spindle 57 is installed on the support block 5 by the installation block 56. As the diameter of the weft spindle 57 gradually decreases, it drives the first cone sleeve 7 and the second cone sleeve 71 to slide on the guide rail 4 towards the support block 5.
[0027] Please see Figures 1-5 The bottom surface of the shuttle body 1 is provided with multiple shuttle wheels 6. The position and number of shuttle wheels 6 correspond to the position and number of bottom wheels 53. The center line of the shuttle wheels 6 coincides with the axis of the bottom wheel 53. All shuttle wheels 6 are located on one side of the bottom wheel 53. The shuttle body 1 is equipped with shuttle wheels 6 with built-in bearings. The yarn guard support block 5 is located above the outside of the shuttle wheels 6. When the weft spindle 57 becomes smaller, the yarn guard 11 adopts a two-sided opening and closing structure. The two ends of the two yarn guards 11 are driven by the first tension spring 9 to descend and finally clamp on the surface of the weft spindle 57.
[0028] Please see Figures 1-5 The bottom end of the slot 54 extends beyond the bottom surface of the shuttle body 1. A guide ring assembly 2 is provided at the bottom end of the slot 54. The guide ring assembly 2 includes an upper guide ring 21, a lower guide ring 22, and a round steel reed 23. The upper guide ring 21 and the lower guide ring 22 are symmetrically distributed on both sides of the round steel reed 23. The guide ring assembly 2 is composed of an upper guide ring 21, a lower guide ring 22, and a round steel reed 23. The round steel reed 23 is made of stacked steel plates and is fixed at both ends to the upper guide ring 21 and the lower guide ring 22. Since the guide rail surfaces of the upper guide ring 21 and the lower guide ring 22 are provided with inward narrow inclined surfaces that cooperate with the shuttle wheel 6 on the shuttle body 1, and the cylindrical surface formed by the vertical surface of the round steel reed 23 cooperates with the bottom wheel 53 of the shuttle body 1, the bottom wheel 53 cooperates with the round steel reed 23 through the slot 54, forming a state of constraint on the shuttle body 1 on all four sides. The shuttle body 1 can only run on the guide rail of the guide ring assembly 2.
[0029] Please see Figures 1-5A vertical plate 3 is provided at the center of one end of the shuttle body 1, and the other end of the vertical plate 3 is located above the shuttle body 1. A turntable 31 is provided at the other end of the vertical plate 3, and a weft insertion rod 32 is provided at the other end of the turntable 31. The turntable 31 and the vertical plate 3, and the turntable 31 and the weft insertion rod 32 are rotatably connected. A size ring is provided at the other end of the weft insertion rod 32. When the shuttle body 1 moves, one end of the weft yarn is wound around the circular hole at the end of the size ring fixed on the yarn guard 11 from the surface of the weft yarn spindle 57 via the pre-warp path. On the edge of the circular size ring on the machine, as the shuttle 1 moves, the weft spindle 57 also rotates. At the same time, the weft yarn gathers from the circumference on the edge of the circular size ring to form the warp yarn. Under the action of the opening and closing of the external heddles driving the internal shuttle to feed the weft yarn, the warp yarn and the weft yarn form warp and weft weaving. Then, they are lifted together by the lifting device of the machine to form a piece of cloth. The empty position at the edge of the circular size ring can then complete the weft feeding and weaving movement of the next yarn guard 11. By continuously repeating this process, the weaving of the whole woven bag is formed.
[0030] Please see Figures 1-5 The shuttle 1 is provided with a tail wheel 8 at one end of the second cone sleeve 71. The tail wheel 8 is located on the rear side of the second cone sleeve 71. The operation of the shuttle 1 relies on the push component installed on the machine to pass through the warp wire and the tail wheel 8 installed on the shuttle 1. The tail wheel 8 is equipped with a bearing. The power is transmitted to the shuttle 1 through the tail wheel 8. The shuttle 1 makes a circular motion along the guide ring assembly 2.
[0031] During use, when the weft spindle 57 becomes smaller, the yarn guard 11 adopts a two-sided opening and closing structure. The two ends of the two yarn guards 11 are driven to descend by the first tension spring 9 and finally clamped on the surface of the weft spindle 57 on the inner side, while the outer side contacts the warp yarn with tension, protecting the weft yarn from contacting the warp yarn when it is pulled out. Meanwhile, as the diameter of the weft spindle 57 continuously decreases, the first cone sleeve 7 and the second cone sleeve 71 supporting the center of the weft spindle 57 will move downward along the guide rails 4 on both sides. Under the action of the mounting block 56, the lower surface of the weft spindle 57 is always in contact with the surface of the bottom block 5 inside the shuttle body 1. The centrifugal force of the weft spindle 57 moving in a circular motion in the shuttle body 1 and the tension springs connected to the yarn protector 11, the first tension spring 9 and the second tension spring 91, drive and maintain the stable release of the weft yarn and provide tension for the weft yarn. The first tension spring 9 and the second tension spring 91 of the replaceable yarn protector 11 ensure that the weft yarn tension is adjustable. At the same time, the warp yarn tension value has been tested and found to have decreased by an average of 12%, thereby effectively reducing the phenomenon of warp yarn splitting and breakage, improving the fabric quality, reducing the warp tension loss of the fabric by 3%, and increasing the production efficiency of the equipment by 8%.
[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A retractable shuttle structure, comprising a shuttle (1), characterized in that: A yarn guard (11) is provided on both sides of the shuttle body (1); a guide rail (4) is provided at both ends of the center line of the shuttle body (1), and a first cone sleeve (7) and a second cone sleeve (71) are provided opposite to each other at the other end of the guide rail (4). A slider (73) is provided between the first cone sleeve (7) and the second cone sleeve (71) and the guide rail (4). A telescopic rod (72) is provided at the other end of the first cone sleeve (7), and a return spring (74) is provided on the side of the telescopic rod (72). The other end of the return spring (74) is... One end is fixed to the surface of the guide rail (4); a first tension spring (9) is connected between one end of the two yarn guards (11), the first tension spring (9) is located below the telescopic rod (72), and a second tension spring (91) is connected between the other ends of the two yarn guards (11), the second tension spring (91) is located below the second cone sleeve (71), and the first tension spring (9) and the second tension spring (91) are both located on the opposite inner side of the guide rail (4) at both ends of the shuttle body (1).
2. The retractable shuttle structure according to claim 1, characterized in that: The bottom of the shuttle body (1) is provided with a bottom support block (5) at the center. Connecting rods (51) are symmetrically arranged at the center of both sides of the bottom support block (5). A wheel axle (52) is vertically arranged at the other end of the connecting rod (51). Bottom wheels (53) are arranged at both ends of the wheel axle (52). Bearings (55) are arranged inside the bottom wheels (53). A groove (54) is arranged at the center of the bottom wheels (53).
3. The retractable shuttle structure according to claim 2, characterized in that: The top surface of the bottom support block (5) is provided with an installation block (56), and the other end of the installation block (56) is provided with a weft spindle (57), which is located between two yarn guards (11).
4. The retractable shuttle structure according to claim 3, characterized in that: The bottom surface of the shuttle body (1) is provided with multiple shuttle wheels (6). The position and number of the shuttle wheels (6) correspond to the position and number of the bottom wheel (53). The center line of the shuttle wheel (6) coincides with the axis of the bottom wheel (53). All the shuttle wheels (6) are located on one side of the bottom wheel (53).
5. The retractable shuttle structure according to claim 4, characterized in that: The bottom end of the slot (54) extends beyond the bottom surface of the shuttle body (1). A guide ring assembly (2) is provided at the bottom end of the slot (54). The guide ring assembly (2) includes an upper guide ring (21), a lower guide ring (22), and a round reed (23). The upper guide ring (21) and the lower guide ring (22) are symmetrically distributed on both sides of the round reed (23).
6. The retractable shuttle structure according to claim 5, characterized in that: The shuttle body (1) has a vertical plate (3) at the center of one end of the first cone sleeve (7). The other end of the vertical plate (3) is located above the shuttle body (1). A turntable (31) is provided at the other end of the vertical plate (3), and a weft insertion rod (32) is provided at the other end of the turntable (31).
7. The retractable shuttle structure according to claim 6, characterized in that: The shuttle body (1) has a tail wheel (8) at one end of the second conical sleeve (71), and the tail wheel (8) is located on the rear side of the second conical sleeve (71).