A circular loom for container bags

Abstract

This utility model discloses a circular loom for container bags, relating to the field of textile machinery. It solves the problems of noise and warp yarn crushing in traditional shuttle loom designs. The key features of the technical solution are: it includes a shuttle road and a shuttle; the shuttle road includes an upper ring beam and a lower ring beam; the upper and lower ring beams are connected by a shuttle guide component; the shuttle guide component includes a frame and a shuttle guide wheel; the upper and lower ends of the frame are respectively connected to the upper and lower ring beams; the shuttle guide wheel is mounted on the frame; the shuttle guide wheel is located between the upper and lower ring beams; the shuttle includes a shuttle body; the shuttle body is located between the upper and lower ring beams; the bottom of the shuttle body cooperates with the shuttle guide wheel. This reduces noise and avoids the problem of the shuttle crushing warp yarns.

Description

Technical Field

[0001] This utility model relates to the field of textile production machinery, and more specifically, it relates to a circular loom for container bags. Background Technology

[0002] In the production of FIBCs (Flexible Intermediate Bulk Containers), circular looms are the core equipment for interlacing warp and weft yarns. Traditional circular looms typically employ a shuttle-shuttle-rail structure. Four to eight shuttle wheels are mounted at the bottom of the shuttle, distributed in two layers. These wheels roll on a circular track formed by the upper and lower gate rings, driving the shuttle's circular motion to interlace the weft yarns. When the shuttle wheels rotate at high speeds on the track (typically >200 rpm), they repeatedly impact the track connectors, generating periodic impact noise with peak values ​​≥100 dB(A), with the shuttle box being the primary noise source. The multi-layered shuttle wheel layout exacerbates centrifugal force, causing overall machine resonance, further amplifying noise and leading to component loosening. The shuttle wheels directly crush the warp yarns, causing repeated rubbing, pilling, splitting, and even breakage of the yarns. Based on these shortcomings, a shuttle-less circular loom is urgently needed. Utility Model Content

[0003] The purpose of this invention is to provide a circular loom for FIBCs (Flexible Intermediate Bulk Containers) where the shuttle has no shuttle wheel, thus reducing noise and avoiding the problem of the shuttle wheel crushing the warp threads.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a circular loom for container bags, comprising a shuttle and a shuttle; the shuttle comprises an upper ring beam and a lower ring beam; the upper ring beam and the lower ring beam are connected by a guide shuttle component; the guide shuttle component comprises a frame and a guide shuttle wheel; the upper and lower ends of the frame are respectively connected to the upper ring beam and the lower ring beam; the guide shuttle wheel is disposed on the frame; the guide shuttle wheel is located between the upper ring beam and the lower ring beam; the shuttle comprises a shuttle body; the shuttle body is disposed between the upper ring beam and the lower ring beam; the bottom of the shuttle body cooperates with the guide shuttle wheel.

[0005] Furthermore, the upright frame consists of, from top to bottom, an upper fixing plate, an upper shuttle fixing part, a middle shuttle fixing part, a lower shuttle fixing part, and a lower fixing plate; the guide shuttle wheel includes an upper guide wheel, a middle guide wheel, and a lower guide wheel; the upper guide wheel is located in the upper shuttle fixing part; the middle guide wheel is located in the middle shuttle fixing part; the lower guide wheel is located in the lower shuttle fixing part; the middle guide wheel is horizontally positioned; the upper guide wheel and the lower guide wheel are arranged in a V-shape, with the opening direction away from the shuttle.

[0006] Furthermore, the bottom of the shuttle body is shaped like a boat with a low center and high sides; the upper and lower guide wheels are symmetrically arranged with the middle guide wheel as the center; the middle guide wheel is recessed to the outside of the shuttle with reference to the upper and lower guide wheels; the upper and lower guide wheels are respectively matched with the two sides of the shuttle body; the middle guide wheel is matched with the middle of the shuttle body.

[0007] Furthermore, the middle shuttle fixing part consists of an upper shaft platform, a guide wheel groove, and a lower shaft platform from top to bottom; the two ends of the shaft of the middle guide wheel are connected to the upper shaft platform and the lower shaft platform respectively; the guide wheel groove accommodates the middle guide wheel.

[0008] Furthermore, the shuttle body is provided with a first tube seat and a second tube seat; the first tube seat and the second tube seat are arranged opposite to each other; both the first tube seat and the second tube seat include a mounting base, a slider and a support platform; the mounting base is provided with a slider cavity; one end of the slider is connected to the support platform; the other end of the slider is located in the slider cavity and slides in cooperation with the slider cavity; a return spring is also provided in the slider cavity; the return spring cooperates with the slider.

[0009] Furthermore, the first tube seat also includes a handle groove and a handle rod; the handle groove is disposed on the cavity wall of the slider cavity, connecting the slider cavity and the outside; one end of the handle rod is connected to the slider, and the other end extends out of the handle groove; the handle rod pushes the slider to slide within the slider cavity.

[0010] Furthermore, the support platform includes a limiting part and a protrusion; the limiting part is connected to the slider; the protrusion is disposed on the limiting part; the protrusion is frustum-shaped.

[0011] Furthermore, the shuttle body is provided with a first shuttle frame and a second shuttle frame; the first shuttle frame includes a first support, a second support and an adjusting rod; an adjusting nut is fixed in the middle of the adjusting rod; the two ends of the adjusting rod are threadedly engaged with the first support and the second support respectively; the threads at the two ends of the adjusting rod are in opposite directions; the bottom of the first support is hinged to the shuttle body; a roller is provided at the top of the second support; the two ends of the second shuttle frame are hinged to the second support and the shuttle body respectively.

[0012] In summary, this utility model has the following beneficial effects:

[0013] By eliminating the shuttle wheel, the rolling friction between the guide shuttle wheel and the bottom of the shuttle body replaces the hard impact, and the noise source changes from impact to continuous mechanical friction, greatly reducing noise. The warp yarn only passes through the gaps in the guide shuttle components, avoiding the crushing of the shuttle wheel and improving the strength of the warp yarn. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of Example 1.

[0015] Figure 2 This is a schematic diagram of Example 2.

[0016] Figure 3 and Figure 4 These are schematic diagrams of Embodiments 3 and 4.

[0017] In the diagram: 11. Upper ring beam; 12. Lower ring beam; 13. Stand; 131. Upper fixing plate; 132. Upper shuttle fixing part; 133. Middle shuttle fixing part; 134. Lower shuttle fixing part; 135. Lower shuttle plate; 2. Shuttle; 21. Shuttle body; 22. First tube seat; 221. Mounting seat; 2211. Sliding block cavity; 2212. Handle groove; 222. Sliding block; 223. Support platform; 2231. Protrusion; 2232. Limiting part; 23. Second tube seat; 241. First bracket; 242. Second bracket; 243. Adjusting rod; 244. Roller; 225. Handle rod; 25. Second shuttle frame; 3. Weft yarn spool. Detailed Implementation

[0018] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to that other component. This "connection" is not limited to a fixed connection or a movable connection; the specific connection method should be determined based on the specific technical problem to be solved.

[0020] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] Example 1:

[0023] This embodiment provides a circular loom for FIBCs (Flexible Intermediate Bulk Containers) without a shuttle wheel, which achieves the technical effects of reducing noise and avoiding warp yarn crushing.

[0024] The circular loom for container bags includes a shuttle and a shuttle 2. The shuttle includes an upper ring beam 11 and a lower ring beam 12. The upper ring beam 11 and the lower ring beam 12 are connected by a shuttle guide component. The shuttle guide component includes a frame 13 and a shuttle guide wheel. The upper and lower ends of the frame 13 are connected to the upper ring beam 11 and the lower ring beam 12, respectively. The shuttle guide wheel is mounted on the frame 13 and is located between the upper ring beam 11 and the lower ring beam 12. The shuttle 2 includes a shuttle body 21. The shuttle body 21 is located between the upper ring beam 11 and the lower ring beam 12. The bottom of the shuttle body 21 engages with the shuttle guide wheel. Multiple shuttle guide components are included, arranged in a circular array along the shuttle. Optionally, the number of shuttle guide components is determined by the length of the shuttle body 21, with the standard being that the shuttle body 21 can operate stably between the upper ring beam 11 and the lower ring beam 12.

[0025] The upper ring beam 11 and the lower ring beam 12 form the upper and lower boundaries of the circular track, creating a stable circular frame. Connected by the shuttle guide component, they form a track for the shuttle 2 to perform circular motion. A warp yarn passage is reserved between the two to ensure that the warp yarns pass through perpendicularly without contacting the moving parts, thus preventing crushing. The main motor drives the shuttle 2 to move along the track. The weft yarn carried on the shuttle 2 passes through the warp shed, and the inertia of the circular motion pulls the weft yarn towards the weft insertion point, completing the beating process. In this embodiment, by using a track with a shuttle guide wheel in conjunction with a shuttle 2 without a shuttle wheel, the multi-layered shuttle wheel layout avoids the increased centrifugal force and overall machine resonance caused by the multi-layered shuttle wheel layout, reducing noise. In actual measurements, the noise level was reduced by 20% in decibels.

[0026] Example 2:

[0027] This embodiment provides a specific shuttle and shuttle 2 structure based on embodiment 1, which has the effect of stable operation.

[0028] The frame 13 consists of, from top to bottom, an upper fixing plate 131, an upper shuttle fixing part 132, a middle shuttle fixing part 133, a lower shuttle fixing part 134, and a lower fixing plate. The upper fixing plate 131 is connected to the upper ring beam 11, and the lower fixing plate is connected to the lower ring beam 12. Optionally, the upper fixing plate 131 and the lower fixing plate are rigidly connected to the upper ring beam 11 and the lower ring beam 12 by bolts to bear the supporting force of the overall frame. The guide shuttle wheel includes an upper guide wheel, a middle guide wheel, and a lower guide wheel. The upper guide wheel is located in the upper shuttle fixing part 132; the middle guide wheel is located in the middle shuttle fixing part 133; and the lower guide wheel is located in the lower shuttle fixing part 134. The middle guide wheel is horizontally positioned. The upper and lower guide wheels are arranged in a V-shape, with the opening direction away from the shuttle 2. The contact points between the upper and lower guide wheels and the two sides of the shuttle body 21 form a centripetal force angle, which counteracts the centrifugal force when the shuttle body 21 rotates at high speed.

[0029] The bottom of the shuttle body 21 is boat-shaped, with a lower center and higher sides; the upper and lower guide wheels are symmetrically arranged with the middle guide wheel as the center; the middle guide wheel is recessed outward from the shuttle path with reference to the upper and lower guide wheels; the upper and lower guide wheels mate with the sides of the shuttle body 21 respectively; the middle guide wheel mates with the middle part of the shuttle body 21. The recessed layout of the middle guide wheel fits into the groove in the middle of the shuttle body 21 to prevent the shuttle body 21 from jumping up and down.

[0030] Optionally, grooves are provided at the bottom of the shuttle body 21 where it contacts the upper guide wheel, middle guide wheel, and lower guide wheel. Preferably, a rectangular groove is provided in the middle contact area with the middle guide wheel, and V-shaped guide grooves are provided on both sides where they contact the upper and lower guide wheels. The middle shuttle fixing part 133 consists of an upper shaft platform, a guide wheel groove, and a lower shaft platform from top to bottom; the two ends of the shaft of the middle guide wheel are connected to the upper shaft platform and the lower shaft platform, respectively; the guide wheel groove accommodates the middle guide wheel.

[0031] The shuttle 21 is embedded in a spatial track composed of three sets of guide wheels. During high-speed movement, when the shuttle 21 generates centrifugal force and deflects outward, the V-shaped inclined surfaces of the upper and lower guide wheels generate radial forces, the resultant force pointing towards the center to counteract the deflection trend. Simultaneously, the middle guide wheel also exerts a centripetal force towards the center; the lower guide wheel provides support to counteract the weight of the shuttle 21. The curvature at the bottom of the shuttle 21 causes the contact point to automatically shift, restoring its equilibrium position. A V-groove guides the guide wheels back to their original position, preventing derailment.

[0032] The circular loom for container bags provided in this embodiment avoids the resonance problem caused by multiple shuttle wheels through spatial mechanical reconstruction and modular contact surface design. The design of three-layer guide shuttle wheels improves the stability of shuttle 2 operation.

[0033] Example 3:

[0034] This embodiment provides a circular knitting machine for container bags based on Example 1, which enables rapid installation of the weft bobbin 3 and adaptive adaptation to weft bobbins 3 of different lengths and radii.

[0035] The shuttle body 21 is provided with a first tube seat 22 and a second tube seat 23; the first tube seat 22 and the second tube seat 23 are arranged opposite each other; the first tube seat 22 and the second tube seat 23 are symmetrically arranged on both sides of the shuttle body 21 to form a bidirectional clamping system, which can adapt to weft cylinders 3 of different lengths by synchronous extension and retraction. The first tube seat 22 and the second tube seat 23 each include a mounting base 221, a slider 222 and a support platform 223; the mounting base 221 is provided with a slider 222 cavity 2211; one end of the slider 222 is connected to the support platform 223 through a bearing; the other end of the slider 222 is disposed in the slider 222 cavity 2211 and slides in cooperation with the slider 222 cavity 2211; the slider 222 cavity 2211 serves as a guide rail for the slider 222, and its inner wall is coated with a low coefficient of friction. A return spring is also provided in the slider 222 cavity 2211; the return spring cooperates with the slider 222. The return spring provides adaptive push for the preloaded helical spring, pushing the slider 222 to expand outward to clamp the weft cylinder 3.

[0036] The first tube seat 22 also includes a handle groove 2212 and a handle rod 225. The handle groove 2212 is disposed on the cavity wall of the slider 222 cavity 2211, connecting the slider 222 cavity 2211 to the outside. Optionally, the handle groove 2212 is formed in an L-shaped channel on the side wall of the slider 222 cavity 2211, which serves both guiding and limiting functions. One end of the handle rod 225 is connected to the slider 222, and the other end extends out of the handle groove 2212. The handle rod 225 pushes the slider 222 to slide within the slider 222 cavity 2211. Manually pushing the handle rod 225 drives the slider 222 to compress the return spring, thereby enabling the support platform 223 to retract quickly.

[0037] The support platform 223 includes a limiting part 2232 and a protrusion; the limiting part 2232 is connected to the slider 222 via a bearing; an annular baffle, with a diameter 3-5 mm larger than the inner diameter of the weft cylinder 3, prevents axial movement of the cylinder. A protrusion 2231 is provided on the limiting part 2232; the protrusion 2231 is frustum-shaped. The frustum-shaped cone (cone angle 15°) guides the weft cylinder 3 to precise positioning using the self-centering principle of the inclined plane.

[0038] Working principle: Pushing the handle 225 compresses the slider 222, causing the return spring to compress, and the support platform 223 retracts to its minimum distance, allowing the weft yarn spool 3 to be inserted. Releasing the handle 225 causes the return spring to push the slider 222 outward, bringing the protruding conical surface into contact with the spool. The radial force automatically corrects the spool's position, and the limiting part 2232 abuts against the spool's end face, forming an axial constraint. Using this embodiment, the push-pull handle 225 completes the installation and disassembly in one step, saving 70% of the time compared to traditional bolt fixing. No wrenches or other auxiliary tools are needed, reducing the complexity of worker operations. Through the innovative combination of the bidirectional spring slider 222 mechanism and the conical self-centering support platform 223, mechanical self-adaptation replaces manual adjustment, solving the core pain points of low installation efficiency and poor compatibility of the weft yarn spool 3.

[0039] Example 4:

[0040] This embodiment provides a shuttle 2 based on embodiment 1. The shuttle body 21 is provided with a first shuttle frame and a second shuttle frame 25. The first shuttle frame includes a first support 241, a second support 242 and an adjusting rod 243. An adjusting nut is fixed in the middle of the adjusting rod 243. The two ends of the adjusting rod 243 are threadedly engaged with the first support 241 and the second support 242 respectively. The threads at the two ends of the adjusting rod 243 are in opposite directions. When rotating, the first and second supports 242 are driven to move synchronously in opposite directions, thereby changing the length of the first shuttle frame and cooperating with the second shuttle frame 25 to adjust the center of gravity position of the shuttle 2 and the position of the roller 244.

[0041] The bottom of the first support 241 is hinged to the shuttle 21; the top of the second support 242 is equipped with a roller 244; the two ends of the second shuttle 25 are hinged to the second support 242 and the shuttle 21, respectively. The roller 244 is located at the top of the second support 242 and is made of polyurethane coated wheel. It directly contacts the size ring, using rolling friction instead of sliding friction to reduce weft yarn wear. The roller 244 is in close contact with the inner edge of the size ring, and preload ensures that the weft yarn maintains constant tension during weaving.

[0042] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A bag round loom characterized by: It includes a shuttle and a shuttle; the shuttle includes an upper ring beam and a lower ring beam; the upper ring beam and the lower ring beam are connected by a shuttle guide component; the shuttle guide component includes a stand and a shuttle guide wheel; the upper and lower ends of the stand are connected to the upper ring beam and the lower ring beam respectively; the shuttle guide wheel is set on the stand; the shuttle guide wheel is located between the upper ring beam and the lower ring beam. The shuttle includes a shuttle body; the shuttle body is located between the upper ring beam and the lower ring beam; the bottom of the shuttle body is engaged with the guide wheel.

2. A bag weaving machine according to claim 1, characterized in that: The upright frame consists of, from top to bottom, an upper fixing plate, an upper shuttle fixing part, a middle shuttle fixing part, a lower shuttle fixing part, and a lower fixing plate; the guide shuttle wheel includes an upper guide wheel, a middle guide wheel, and a lower guide wheel; The upper guide wheel is located in the upper shuttle fixing part; The center guide wheel is located in the center shuttle fixing part; The lower guide wheel is located in the lower shuttle fixing part; The middle guide wheel is set horizontally; the upper and lower guide wheels are set in a V-shape, with the opening direction away from the shuttle.

3. A bag weaving machine according to claim 2, characterised in that: The bottom of the shuttle body is shaped like a boat with a low center and high sides; the upper and lower guide wheels are symmetrically arranged with the middle guide wheel as the center; the middle guide wheel is recessed to the outside of the shuttle with reference to the upper and lower guide wheels; the upper and lower guide wheels are respectively matched with the two sides of the shuttle body; the middle guide wheel is matched with the middle of the shuttle body.

4. A bag weaving machine according to claim 2, characterized in that: The middle shuttle fixing part consists of an upper shaft platform, a guide wheel groove, and a lower shaft platform from top to bottom; the two ends of the shaft of the middle guide wheel are connected to the upper shaft platform and the lower shaft platform respectively; the guide wheel groove accommodates the middle guide wheel.

5. A bag weaving machine according to claim 1, characterized in that: The shuttle body is provided with a first tube seat and a second tube seat; the first tube seat and the second tube seat are arranged opposite to each other; both the first tube seat and the second tube seat include a mounting base, a slider and a support platform; the mounting base is provided with a slider cavity; one end of the slider is connected to the support platform; the other end of the slider is located in the slider cavity and slides in cooperation with the slider cavity; a return spring is also provided in the slider cavity; the return spring cooperates with the slider.

6. A bag weaving machine according to claim 5, characterised in that: The first tube seat also includes a handle groove and a handle rod; the handle groove is provided on the cavity wall of the slider cavity, connecting the slider cavity and the outside; one end of the handle rod is connected to the slider, and the other end extends out of the handle groove; the handle rod pushes the slider to slide in the slider cavity.

7. A bag weaving machine according to claim 5, characterized in that: The support platform includes a limiting part and a protruding part; the limiting part is connected to the slider; the protruding part is disposed on the limiting part; the protruding part is frustum-shaped.

8. A bag weaving machine according to claim 1, characterized in that: The shuttle body is provided with a first shuttle frame and a second shuttle frame; the first shuttle frame includes a first support, a second support and an adjusting rod; an adjusting nut is fixed in the middle of the adjusting rod; the two ends of the adjusting rod are threaded to the first support and the second support respectively; the threads at the two ends of the adjusting rod are in opposite directions; the bottom of the first support is hinged to the shuttle body; a roller is provided at the top of the second support; the two ends of the second shuttle frame are hinged to the second support and the shuttle body respectively.

Images