Self-gravity yarn pressing device of circular weaving machine
By using a gravity-driven wire pressing device and a long slot design, the wire feeding roller can be stably pressed and easily adjusted, which solves the problems of short service life and high maintenance cost of electrically driven wire feeding rollers and reduces the maintenance requirements of the equipment.
Patent Information
- Application Number
- CN202520469299.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-17
AI Technical Summary
The existing circular looms use electrically driven feed rollers, which result in short service life and high maintenance costs, and are inconvenient to operate when the warp yarn breaks or runs out.
The device employs a gravity-fed wire pressing device. Through the avoidance design of the long slot, the wire feeding roller can press the warp yarn with its own weight when needed, and the drive component can be relaxed when not needed, thus avoiding long-term tension.
It achieves stable clamping and convenient adjustment of the wire feeding roller, reducing the maintenance needs and costs of the equipment.
Smart Images
Figure CN223892979U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circular loom technology, and in particular to a gravity-based yarn pressing device for circular looms. Background Technology
[0002] In existing technology, the warp yarns of a circular loom need to be tensioned by tension rollers when they are fed in. Therefore, when the warp yarns break or the warp yarns on the warp spool are all wound up, the warp yarns are very easy to get caught in the gate ring or fly around. When the warp yarns are caught in the gate ring, it is inconvenient to splice them. When the warp yarns fly around, they are easy to get tangled with other warp yarns. Therefore, some warp feeding pressure rollers have appeared on the market to hold the warp yarns in place. When the warp yarns break or the warp yarns on the warp spool are all used up, they can hold the warp yarns in place to prevent them from flying around. However, existing warp feeding pressure rollers use electric drive to maintain their pressing state. The electric drive components are usually cylinders or electric cylinders. When the electric drive components are in a working state for a long time, their service life is relatively short and the maintenance cost is relatively high. Summary of the Invention
[0003] The purpose of this utility model is to overcome the defects of the prior art. This utility model provides a gravity pressing device for a circular loom. By avoiding the long slot, the drive component can be prevented from pulling the feeding roller for a long time, and the feeding roller can press the warp yarn by its own weight.
[0004] This utility model discloses a gravity-operated yarn pressing device for a circular loom, comprising an assembly frame, on which are arranged a reversing roller for guiding and tensioning warp yarns, a yarn feeding roller for pressing the warp yarns, and a feed roller that cooperates with the yarn feeding roller. The assembly frame has swing frames and a driving component for swinging the swing frames on opposite sides of the yarn feeding roller. The key feature is that a lifting shaft is provided on the output shaft of the driving component, and a lifting hole is provided on the swing frame. The lifting shaft passes through the lifting hole, which is an elongated slot. When the yarn feeding roller needs adjustment, the driving component can drive the lifting shaft to lift the inner wall of the elongated slot, causing the yarn feeding roller to disengage from the feed roller. The yarn feeding roller can exert its own weight on the swing frame, causing the swing frame to swing relative to it. When the yarn feeding roller presses down on the feed roller, the feed roller can restrict further rotation of the swing frame, and the lifting shaft can slide relative to the elongated slot to a clearance state.
[0005] Using the above technical solution, during use, the weight of the wire feeding roller can press against the infeed roller, thereby pressing the passing warp yarn. At this time, the lifting shaft does not need to pull or push the inner wall of the long slot, thus allowing the drive component to be in a relaxed state and not be kept taut for a long time. When adjustment is required, the drive component drives the lifting shaft to move until it abuts against the inner wall of the long slot. Further lifting will drive the swing frame to swing relative to each other, thereby causing the wire feeding roller to disengage from the infeed roller, making it easier for the worker to thread the warp yarn. After completion, the drive component drives the lifting shaft to move back to its original position. At this time, the weight of the wire feeding roller can assist the swing frame to swing back to its original position. When the wire feeding roller abuts against the infeed roller, the drive component can further drive the lifting shaft to move to the end that is disengaged from the long slot, thus being in a state of avoidance.
[0006] A further feature of this invention is as follows: one end of the swing frame is provided with an upwardly extending lifting part, and the other end of the swing frame is provided with a downwardly extending hinge part. The elongated slot is provided on the lifting part, and a hinge shaft is hinged on the mounting frame at the position corresponding to the hinge part. The driving component is located above the lifting part.
[0007] By adopting the above technical solution, the lifting part and the hinge part are located at opposite ends of the swing frame, making it more stable during lifting and resetting swing, and requiring less force. The driving component is located above the lifting part. When the output end of the driving component retracts, it can drive the lifting shaft to lift the end of the long slot. When the output end of the driving component extends, it can remove the lifting force. Furthermore, the gravity of the wire feeding roller can drive the swing frame to swing and reset.
[0008] A further feature of this invention is that a rubber sleeve is fitted onto the wire feeding roller.
[0009] By adopting the above technical solution, relative slippage of the warp threads can be prevented.
[0010] A further feature of this invention is that a hinge joint is provided on the output end of the drive component, and a U-shaped clearance groove is provided on the hinge joint. The lifting shaft passes through the U-shaped clearance groove, and part of the lifting part is located in the U-shaped clearance groove and can rotate relative to it.
[0011] Using the above technical solution, when the swing frame swings relative to each other, the lifting part will produce an angle change, which can be smoothly rotated and changed by the U-shaped clearance groove. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0013] Figure 2 This is a diagram showing the assembly of the wire feeding roller, wire infeed roller, swing frame, and drive component of this utility model.
[0014] Figure 3This is a diagram showing the mating of the drive component and the swing frame of this utility model;
[0015] Figure 4 This is a diagram showing the fit between the drive component and the swing frame of this utility model. Detailed Implementation
[0016] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings:
[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., 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.
[0018] This utility model discloses a gravity-operated yarn pressing device for a circular loom, comprising an assembly frame 1, on which are mounted a reversing roller 2 for guiding and tensioning warp yarns, a yarn feeding roller 3 for pressing the warp yarns, and a feed roller 4 cooperating with the yarn feeding roller 3. On the sides of the assembly frame 1 opposite to the yarn feeding roller 3, there are swing frames 5 and a driving component 6 (preferably a pneumatic or electric cylinder) for driving the swing frames 5 to swing. A lifting shaft 61 is mounted on the output shaft of the driving component 6. The swing frame 5 has a lifting hole 51 through which the lifting shaft 61 passes. The lifting hole 51 is an elongated slot. When the yarn feeding roller 3 needs adjustment, the driving component 6 can drive the lifting shaft 61 to lift the inner wall of the elongated slot, causing the yarn feeding roller 3 to disengage from the feed roller 4. The yarn feeding roller 3 can also exert its own weight on the swing frame 5 to cause the swing frame 5 to swing relative to it. When the yarn feeding roller 3 presses against the feed roller 4... The feed roller 4 can limit the further rotation of the swing frame 5, and the lifting shaft 61 can slide relative to the long slot to a clearance state. In use, the feed roller 3 can press against the feed roller 4 by its own weight, thereby pressing the passing warp. At this time, the lifting shaft 61 does not need to pull or push the inner wall of the long slot, so that the drive component 6 is in a relaxed state and does not need to be tense for a long time. When adjustment is required, the drive component 6 drives the lifting shaft 61 to move to abut against the inner wall of the long slot. Further lifting can drive the swing frame 5 to swing relative to each other, so that the feed roller 3 disengages from the feed roller 4, making it easier for the worker to thread the warp. After completion, the drive component 6 drives the lifting shaft 61 to move back to its original position. At this time, the feed roller 3 can assist the swing frame 5 to swing back to its original position due to its own weight. When the feed roller 3 abuts against the feed roller 4, the drive component 6 can further drive the lifting shaft 61 to move to the end that is away from the long slot, thereby in a clearance state.
[0019] One end of the swing frame 5 is provided with an upwardly extending lifting part 52, and the other end of the swing frame 5 is provided with a downwardly extending hinge part 53. The elongated slot is provided on the lifting part 52. The mounting frame 1 is hinged to the position of the hinge part (the hinge shaft is not shown in the figure). The driving member 6 is provided above the lifting part 52. The lifting part 52 and the hinge part 53 are provided at opposite ends of the swing frame 5, so that it is more stable when lifting and resetting swinging, and the required force is also smaller. The driving member 6 is provided above the lifting part 52. When the output end of the driving member 6 retracts, it can drive the lifting shaft 61 to lift the end of the elongated slot. When the output end of the driving member 6 extends, it can remove the lifting force. Furthermore, the weight of the wire feeding roller 3 can drive the swing frame 5 to swing and reset.
[0020] The yarn feeding roller 3 is fitted with a rubber sleeve 31 to prevent the warp yarns from slipping relative to each other.
[0021] The output end of the drive component 6 is provided with a hinge joint 62, and the hinge joint 62 is provided with a U-shaped clearance groove 621. The lifting shaft 61 passes through the U-shaped clearance groove 621, and part of the lifting part 52 is located in the U-shaped clearance groove 621 and can rotate relative to it. When the swing frame 5 swings relative to it, the lifting part 52 will produce an angle change, which can be smoothly rotated and changed through the U-shaped clearance groove 621.
Claims
1. A gravity-operated yarn pressing device for a circular loom, comprising an assembly frame (1), wherein the assembly frame (1) is provided with a reversing roller (2) for guiding and tensioning warp yarns, a yarn feeding roller (3) for pressing the warp yarns, and a feed roller (4) cooperating with the yarn feeding roller (3), wherein the assembly frame (1) is provided with a swing frame (5) on both sides opposite to the yarn feeding roller (3), and a driving member (6) for driving the swing frame (5) to swing, characterized in that: The output shaft of the drive unit (6) is provided with a lifting shaft (61), and the swing frame (5) is provided with a lifting hole (51). The lifting shaft (61) passes through the lifting hole (51), and the lifting hole (51) is a long slot. When the wire feeding pressure roller (3) needs to be adjusted, the drive unit (6) can drive the lifting shaft (61) to lift the inner wall of the long slot so that the wire feeding pressure roller (3) is separated from the wire feeding roller (4). The wire feeding pressure roller (3) can exert its own weight on the swing frame (5) so that the swing frame (5) swings relative to each other. When the wire feeding pressure roller (3) presses on the wire feeding roller (4), the wire feeding roller (4) can restrict the swing frame (5) from rotating further, and the lifting shaft (61) can slide relative to the long slot to the avoidance state.
2. The gravity-operated yarn pressing device for a circular loom according to claim 1, characterized in that: One end of the swing frame (5) is provided with an upwardly extending lifting part (52), and the other end of the swing frame (5) is provided with a downwardly extending hinge part (53). The long slot is provided on the lifting part (52), and the mounting frame (1) is hinged to the position of the hinge part (53). The driving component (6) is located above the lifting part (52).
3. A gravity-operated yarn pressing device for a circular loom according to claim 1 or 2, characterized in that: A rubber sleeve is fitted on the wire feeding roller (3).
4. The gravity-operated yarn pressing device for a circular loom according to claim 2, characterized in that: The output end of the drive unit (6) is provided with a hinge joint (62), and the hinge joint (62) is provided with a U-shaped clearance groove (621). The lifting shaft (61) passes through the U-shaped clearance groove (621), and part of the lifting part (52) is located in the U-shaped clearance groove (621) and can rotate relative to it.