Let-off device for woven bag circular weaving machine
By introducing a cylinder-driven tension roller and buffer assembly into the warp feeding device, combined with a tension sensor and industrial control computer, the problem of warp tension adjustment in the warp feeding device was solved, achieving stable warp feeding and high-quality weaving.
Patent Information
- Application Number
- CN202422691937.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-05
AI Technical Summary
Existing warp feeding devices are difficult to adjust warp tension, resulting in warp threads being either too tight or too loose, which affects the weaving quality.
The tension roller and buffer assembly are driven by a cylinder. The position of the tension roller is adjusted by the buffer assembly to regulate the warp tension, and the vibration is reduced by the buffer assembly. Combined with the tension sensor and industrial control computer, the speed of the warp feed roller is adjusted in real time to maintain constant tension.
It achieves adjustable warp tension, improves weaving quality, avoids warp breakage, and enhances the stability and range of warp feeding.
Smart Images
Figure CN223548197U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of warp feeding technology for woven fabrics, and in particular to a warp feeding device for a circular loom for woven bags. Background Technology
[0002] The process of making plastic woven fabric involves weaving flat yarns into fabric using a circular loom. A circular loom for woven bags feeds flat yarns (warp yarns) from both sides of the loom onto the warp rollers. Through a specific device, the yarns are woven by the shuttle crossing the weft yarns, producing a tubular woven bag that is then rolled up and formed.
[0003] Warp feeding is mainly accomplished by a warp feeding machine, which feeds the warp yarns on the warp feeding rollers into the weaving area. However, it still has the following drawbacks in actual use: the warp tension of the existing warp feeding device is not easy to adjust, which causes the warp yarns to be too tight or too loose, affecting the weaving quality. In order to solve the above problems, a warp feeding device for a circular knitting machine for woven bags that can adjust the warp tension is provided. Utility Model Content
[0004] In order to solve the problems mentioned in the background art, the present invention provides a warp feeding device for a circular loom for woven bags.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A warp feeding device for a circular knitting machine for woven bags includes a base: a cylinder and a tension roller located above the cylinder are mounted on the base, and a buffer assembly is installed between the output end of the cylinder and the tension roller; the buffer assembly includes a buffer sleeve fixedly connected to the output end of the cylinder, a support rod slidably connected to the buffer sleeve, and a buffer spring, the tension roller is movably connected to the upper end of the support rod, and the buffer spring holds the support rod upward with a spring-like force.
[0007] Preferably, the base is connected to a connecting side plate, the end of the support rod away from the tension roller is located inside the buffer sleeve and connected to a sliding piston disposed inside the buffer sleeve, and the buffer spring applies a force to the sliding piston.
[0008] Preferably, a sliding groove is provided on the connecting side plate, and the sliding groove is slidably disposed within the sliding groove.
[0009] Preferably, a limiting groove is provided on the inner sidewall of the slide groove, and a limiting protrusion is provided on the outer sidewall of the buffer sleeve, the limiting protrusion being slidably connected within the limiting groove.
[0010] Preferably, the top of the connecting side plate is provided with a guide rod, and the guide rod is slidably connected to the movable side plate.
[0011] Preferably, the base has a sliding groove, the sliding groove has a threaded rod and a moving block, the threaded rod is threadedly connected to the moving block, the moving block is slidably disposed in the sliding groove, and a warp feed roller is movably connected to the moving block.
[0012] Preferably, the connecting side plate is fixedly connected to the moving block; the warp feed roller is movably connected to the connecting side plate.
[0013] Preferably, it further includes a fixed side plate fixed on the base, the fixed side plate having a movable driven roller, the driven roller, the tension roller, and the warp feed roller being parallel.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. Fix the warp yarn roll on the warp feed roller. The warp yarn passes over the tension roller and then over the driven roller to the circular loom. According to the required tension for warp feeding, start the cylinder and adjust the buffer assembly to a specific position, thereby driving the tension roller to move to a specific position and adjusting the warp yarn tension so that the warp yarn is fed to the circular loom with a suitable tension.
[0016] 2. The buffer assembly buffers the vibration caused by the rotation of the warp feed roller or the vibration of the warp yarn caused by the external environment, ensuring stable warp feeding, preventing warp yarn breakage, and protecting the warp yarn.
[0017] 3. Start the synchronous motor to drive the threaded rod to rotate. The rod is threadedly connected to the moving block, thereby driving the warp feed roller to move. This allows for adjustment of the distance between the warp feed roller and the circular loom, thus increasing the working range of the device.
[0018] In summary, this utility model overcomes the shortcomings of the prior art, has a reasonable design, and achieves the purpose of adjusting the warp tension by adjusting the position of the tension roller, thus having high social use value and application prospects. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the base structure of this utility model;
[0022] Figure 3This is a schematic diagram of the mounting base structure of this utility model;
[0023] Figure 4 This is a schematic diagram of the tension roller structure of this utility model;
[0024] Figure 5 This is a cross-sectional view of the buffer component of this utility model;
[0025] Figure 6 This is a schematic diagram of the control unit structure of this utility model.
[0026] In the diagram: Base 1, Fixed side plate 11, Sliding groove 12, Threaded rod 121, Synchronous motor 122, Mounting seat 2, Moving block 201, Connecting side plate 21, Warp feed roller 22, Second motor 221, Through-shaft tension sensor 222, Sliding groove 23, Limiting groove 231, Guide rod 232, Moving side plate 3, Tensioning roller 31, Cylinder 32, Buffer assembly 33, Support rod 331, Sliding piston 332, Buffer spring 333, Driven roller 4, Speed sensor 41, Electrical control box 5, Industrial computer 51. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0028] Example 1
[0029] Reference Figure 1-6 A warp feeding device for a circular knitting machine for woven bags includes a base 1 and an electrical control box 5. The base 1 has a fixed side plate 11 near both sides at the top. The fixed side plate 11 is slidably connected to the top of the fixed side plate 11. The top of the mounting plate 2 is provided with a connecting side plate 21. The side wall of the connecting side plate 21 is rotatably connected to a warp feeding roller 22. The outer side wall of the warp feeding roller 22 is provided with a second motor 221. The output end of the second motor 221 is fixedly connected to the side end of the warp feeding roller 22. The connecting side plate 21 has a sliding groove 23. The bottom end of the sliding groove 23 is provided with a cylinder 32. A buffer assembly is slidably connected in the sliding groove 23. The output end of the cylinder 32 is fixedly connected to the buffer assembly. The top of the buffer assembly is provided with a movable side plate 3. The movable side plate 3 is rotatably connected to a tension roller 31.
[0030] The buffer assembly includes a buffer sleeve 33 fixedly connected to the top of the cylinder 32. The buffer sleeve 33 is slidably connected in the slide groove 23. A limiting groove 231 is opened on the inner side wall of the slide groove 23. A limiting protrusion is provided on the outer side wall of the buffer sleeve 33. The limiting protrusion is slidably connected in the limiting groove 231. A support rod 331 is slidably connected to the top of the buffer sleeve 33. A sliding piston 332 is provided at the bottom end of the support rod 331. The sliding piston 332 is slidably connected to the inner side wall of the buffer sleeve 33. A spring 333 is provided at the bottom end of the inner wall of the buffer sleeve 33. The top end of the spring 333 is fixedly connected to the bottom end of the sliding piston 332. The top end of the support rod 331 is fixedly connected to the movable side plate 3.
[0031] The warp yarn roll is fixed on the warp feed roller 22. The warp yarn passes over the tension roller 31 and then over the driven roller 4 to be fed to the circular loom. According to the required tension for warp feeding, the cylinder 32 is activated to adjust the buffer assembly to a specific position, thereby driving the tension roller 31 to move to a specific position and adjusting the warp yarn tension so that the warp yarn is fed to the circular loom with a suitable tension. The buffer assembly buffers the vibration caused by the rotation of the warp feed roller 22 or the vibration of the warp yarn caused by the external environment, ensuring the stability of warp feeding, preventing the warp yarn from breaking, and playing a role in protecting the warp yarn.
[0032] Example 2
[0033] according to Figure 1-6 As shown, a sliding groove 12 is provided at the top of the fixed side plate 11, and a threaded rod 121 is rotatably connected in the sliding groove 12. A moving block 201 is provided at the bottom of the mounting base 2. The threaded rod 121 is threadedly connected to the moving block 201. The moving block 201 is slidably connected in the sliding groove 12. A synchronous motor 122 is provided at the side end of the fixed side plate 11. The output end of the synchronous motor 122 is fixedly connected to the threaded rod 121.
[0034] Furthermore, a guide rod 232 is provided at the top of the connecting side plate 21, and the guide rod 232 is slidably connected to the movable side plate 3;
[0035] Furthermore, the side wall of the fixed side plate 11 is provided with a driven roller 4 located on the side of the mounting base.
[0036] The synchronous motor 122 is started to drive the threaded rod 121 to rotate. The rod 121 is threadedly connected to the moving block 201, thereby driving the warp roller 22 to move, thereby adjusting the distance between the warp roller and the circular loom, thus increasing the working range of the device.
[0037] Example 3
[0038] according to Figure 1-6As shown, the electrical control box 5 includes an industrial computer 51, a second motor 221 electrically connected to the industrial computer 51, a through-shaft tension sensor 222 is provided on the circumferential side wall of the tension roller 31 near the outer end, the through-shaft tension sensor 222 is electrically connected to the industrial computer 51, and a speed sensor 41 is provided on the outer side wall of the fixed side plate 11 below the driven roller 4 for real-time detection of the warp conveying speed, the speed sensor 41 is electrically connected to the industrial computer 51.
[0039] The tension of the warp yarn and the speed of the warp yarn feeding are detected in real time by the tension sensor 222 and the speed sensor 41 and transmitted to the industrial control computer. When the warp roller 22 is in use, the outer diameter becomes smaller. In order to ensure that the warp yarn tension is constant, the industrial control computer 51 controls the speed of the warp roller 22 at the yarn exit end to increase, so that the warp yarn is always fed with constant tension, thereby improving the weaving quality.
[0040] Working principle: The warp yarn bundle is fixed on the warp feed roller 22. The warp yarn passes over the tension roller 31 and then over the driven roller 4 to be fed to the circular loom. According to the required tension for warp feeding, the cylinder 32 is activated to adjust the buffer component to a specific position, thereby driving the tension roller 31 to move to a specific position and adjusting the warp yarn tension so that the warp yarn is fed to the circular loom with a suitable tension.
[0041] The buffer assembly buffers the vibration caused by the rotation of the warp feed roller 22 or the vibration of the warp yarn caused by the external environment, ensuring stable warp feeding and preventing warp yarn breakage.
[0042] The tension sensor 222 and the speed sensor 41 detect the tension of the warp yarn and the speed of the warp yarn feeding in real time and transmit the data to the industrial control computer. When the warp roller 22 is in use, the outer diameter becomes smaller. In order to ensure that the warp yarn tension is constant, the industrial control computer 51 controls the output speed of the warp roller 22 to increase, so that the warp yarn is always fed with constant tension.
[0043] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0045] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.
[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A warp feeding device for a circular loom for woven bags, characterized in that: Includes a base (1): a cylinder (32) and a tension roller (31) located above the cylinder (32) are mounted on the base (1), and a buffer assembly is installed between the output end of the cylinder (32) and the tension roller (31); The buffer assembly includes a buffer sleeve (33) fixedly connected to the output end of the cylinder (32), a support rod (331) slidably connected to the buffer sleeve (33), and a buffer spring (333). The tension roller (31) is movably connected to the upper end of the support rod (331), and the buffer spring (333) keeps the support rod (331) pressed upward. The base (1) is provided with a sliding groove (12), the sliding groove (12) is provided with a threaded rod (121) and a moving block (201), the threaded rod (121) is threadedly connected to the moving block (201), the moving block (201) is slidably disposed in the sliding groove (12), and a warp feed roller (22) is movably connected to the moving block (201).
2. The warp feeding device for a circular loom for woven bags according to claim 1, characterized in that: The base (1) is connected to a connecting side plate (21). The end of the support rod (331) away from the tension roller (31) is located inside the buffer sleeve (33) and connected to the sliding piston (332) disposed inside the buffer sleeve (33). The buffer spring (333) applies a force to the sliding piston (332).
3. The warp feeding device for a circular loom for woven bags according to claim 2, characterized in that: The connecting side plate (21) is provided with a sliding groove (23), and the sliding groove (23) is slidably disposed in the sliding groove (23).
4. The warp feeding device for a circular loom for woven bags according to claim 3, characterized in that: The inner sidewall of the slide groove (23) is provided with a limiting groove (231), and the outer sidewall of the buffer sleeve (33) is provided with a limiting protrusion. The limiting protrusion is slidably connected in the limiting groove (231).
5. The warp feeding device for a circular loom for woven bags according to claim 4, characterized in that: The top of the connecting side plate (21) is provided with a guide rod (232), the top of the buffer assembly is provided with a movable side plate (3), the tension roller (31) is rotatably connected to the movable side plate (3), and the guide rod (232) is slidably connected to the movable side plate (3).
6. The warp feeding device for a circular loom for woven bags according to claim 5, characterized in that: The connecting side plate (21) is fixedly connected to the moving block (201); the warp roller (22) is movably connected to the connecting side plate (21).
7. The warp feeding device for a circular loom for woven bags according to claim 6, characterized in that: It also includes a fixed side plate (11) fixed on the base (1), the fixed side plate (11) is provided with a movable driven roller (4), the driven roller (4), the tension roller (31) and the warp feed roller (22) are parallel.