Yarn cutting knife mechanism
By designing a yarn cutting mechanism that utilizes the groove recognition and positioning mechanism of the yarn tube body, combined with components such as the tip and sensors, the problem of damage during yarn tube cutting is solved, achieving efficient and stable yarn cutting results and extending the service life of the yarn tube.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANCHANG FENGKAI AUTOMATION EQUIP CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-30
AI Technical Summary
Existing yarn cutting equipment is prone to damaging the yarn tube when cutting the yarn tail, affecting its cycle life and having low cutting efficiency.
A yarn cutting mechanism was designed, including a yarn tube body, a right tip and a left tip for limiting and supporting. Combined with a groove recognition and positioning mechanism, the yarn is cut along the center of the groove by the cutter body to avoid contact with the surface of the yarn tube. The stability and accuracy of cutting are improved by components such as sensors and lifting cylinders.
It effectively reduces yarn tube damage, improves cutting efficiency and accuracy, extends the service life of yarn tubes, and enhances work efficiency.
Smart Images

Figure CN224429841U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to yarn cutting technology and field, specifically to a yarn cutting knife mechanism. Background Technology
[0002] Yarn tube tail is a common term in textile production, referring to a small amount of remaining yarn that is wound on the yarn tube and cannot be completely drawn out or utilized during normal use. It is usually located at the end of the yarn tube. During spinning, weaving, knitting and other processes, the yarn will be tightly wound on the yarn tube to form a yarn roll.
[0003] When yarn rolls are used for subsequent processing, as the yarn is continuously pulled out, a small portion of the yarn will eventually be left unusable. To avoid the yarn tube spinning idly or damaging the equipment, a small tail yarn is usually reserved during production to prevent the yarn tube core from directly contacting the traction components and causing wear. Although the yarn tube tail yarn cannot be directly used for high-quality textile products, it is usually recycled to reduce waste.
[0004] Existing yarn cutting equipment is specifically designed for cutting yarn tails in yarn tubes during textile production. It separates the yarn tails from the yarn tubes and cuts them into short, recyclable yarn segments. However, the equipment still damages the yarn tubes during use, which in turn affects subsequent processing and reduces the lifespan of the yarn tubes. Utility Model Content
[0005] Therefore, the purpose of this utility model is to provide a yarn cutting knife mechanism to solve the technical problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a yarn cutting mechanism, including a yarn tube body, the outer wall of the yarn tube body is provided with multiple sets of grooves, and a right-side tip and a left-side tip are respectively installed at both ends of the yarn tube body, a mounting plate is provided at the top of the yarn tube body, and a support frame is movably installed on the outer wall of the mounting plate, a fixing plate is installed at the bottom of the support frame, and a cutter body is provided at one end of the fixing plate, and a positioning plate is provided on the outer wall of the cutter body.
[0007] By adopting the above technical solution, and through the setting of the cutter body and groove, the groove recognition and positioning mechanism is optimized, which can quickly and accurately find the groove on the outer wall of the yarn tube body and cut the yarn along the center of the groove. During the cutting process, contact with the yarn tube surface is effectively avoided, thereby greatly reducing the probability of damage to the yarn tube body and improving the cutting efficiency. The setting of the right tip and the left tip effectively limits and supports the position of the yarn tube body, and the right tip and the left tip are respectively connected to the external drive device, thereby improving the stability and accuracy of the cutter body when cutting the yarn tube body.
[0008] The present invention is further configured such that a transverse guide rail is provided at the bottom of the mounting plate, and a slider is provided on the outer wall of the transverse guide rail.
[0009] Preferably, the slider effectively improves the stability of the support frame during movement, thereby improving the stability of the cutter body during movement.
[0010] The present invention is further configured such that the slider is connected to the support frame, and a lifting cylinder is installed on the top of the support frame.
[0011] Preferably, the support frame effectively limits the position of the fixed plate and the position of the lifting cylinder, facilitating the connection between the mounting plate and the external drive equipment.
[0012] The present invention is further configured such that a fixing plate is installed at the bottom of the support frame, and a sensor is installed on the outer wall of the fixing plate.
[0013] Preferably, the right tips at both ends stop rotating when the groove on the outer wall of the yarn tube body is detected by the sensor.
[0014] The present invention is further configured such that a clamp is provided at one end of the fixing plate, and a cutter body is installed on the inner wall of the clamp.
[0015] Preferably, this design facilitates the replacement and maintenance of the cutter body and also limits the position of the cutter body.
[0016] The present invention is further provided with a positioning plate on the outer wall of the cutter body, and the positioning plate is L-shaped.
[0017] Preferably, the shape of the positioning plate effectively protects the cutter body and reduces the impact of external factors on the cutter body.
[0018] The present invention is further configured such that a drive motor is provided at one end of the right tip, and one end of both the right tip and the left tip are sleeved on the inner wall of the yarn tube body.
[0019] Preferably, both the outer walls of the right tip and the left tip are provided with a fixing frame, and one end of the right tip is provided with a drive motor, which drives the right tip to rotate.
[0020] The present invention is further configured such that the positioning plate is sleeved on the outer wall of the cutter body, and a sleeve rod is fixedly provided at one end of the positioning plate near the fixing plate, and the sleeve rod is sleeved inside the fixing plate.
[0021] Preferably, the sleeve is movably disposed within the fixed plate, which improves the stability of the positioning plate during movement.
[0022] The present invention is further configured such that an electric push rod is provided at the bottom of the fixed plate, and the output end of the electric push rod is connected to the clamp, and the fixed plate and the clamp are movably connected.
[0023] Preferably, the electric push rod is connected to the clamp, which facilitates the adjustment of the position of the cutter body and improves the cutting accuracy.
[0024] In summary, the present invention has the following main advantages:
[0025] This invention optimizes the groove recognition and positioning mechanism by setting the cutter body and groove, which can quickly and accurately find the groove on the outer wall of the yarn tube body and cut the yarn along the center of the groove. During the cutting process, it effectively avoids contact with the surface of the yarn tube, thereby greatly reducing the probability of damage to the yarn tube body and improving the cutting efficiency.
[0026] This invention effectively limits and supports the position of the yarn tube body by setting the right tip and the left tip, and the right tip and the left tip are respectively connected to the external drive device, thereby improving the stability and accuracy of the cutter body when cutting the yarn tube body. Attached Figure Description
[0027] Figure 1 This is a side perspective view of the present invention;
[0028] Figure 2 This is a front perspective view of the present utility model;
[0029] Figure 3 This is a side view of the present invention;
[0030] Figure 4 This is a top view of the present invention;
[0031] Figure 5 For the present utility model Figure 3 Enlarged view of point A in the middle.
[0032] Explanation of reference numerals in the attached figures:
[0033] 1. Yarn tube body; 2. Mounting plate; 20. Horizontal guide rail; 3. Cutter body; 4. Lifting cylinder; 40. Slider; 5. Sensor; 6. Right center point; 8. Support frame; 9. Fixing plate; 90. Clamp; 10. Positioning plate; 11. Left center point; 12. Groove. Detailed Implementation
[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0035] The embodiments of this utility model will be described below based on its overall structure.
[0036] First embodiment:
[0037] Please see Figures 1-5 The device includes a yarn tube body 1, with multiple sets of grooves 12 on its outer wall. A right-hand tip 6 and a left-hand tip 11 are respectively installed at both ends of the yarn tube body 1. A mounting plate 2 is installed on the top of the yarn tube body 1, and a support frame 8 is movably mounted on the outer wall of the mounting plate 2. A fixing plate 9 is installed at the bottom of the support frame 8, and a cutter body 3 is installed at one end of the fixing plate 9. A positioning plate 10 is installed on the outer wall of the cutter body 3. Through the design of the cutter body 3 and the grooves 12, the groove identification and positioning mechanism is optimized, enabling the rapid and accurate location of the grooves 12 on the outer wall of the yarn tube body 1. The yarn is then cut along the center of the grooves 12, effectively avoiding contact with the yarn tube surface during cutting, thus greatly reducing the probability of damage to the yarn tube body 1 and improving the cutting efficiency. The right-hand tip 6 and the left-hand tip 11 effectively limit and support the position of the yarn tube body 1. The right-hand tip 6 and the left-hand tip 11 are respectively connected to an external drive device, thereby improving the stability and accuracy of the cutter body 3 when cutting the yarn tube body 1.
[0038] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-3 The bottom of the mounting plate 2 is provided with a transverse guide rail 20, and the outer wall of the transverse guide rail 20 is provided with a slider 40. The slider 40 effectively improves the stability of the support frame 8 during movement, thereby improving the stability of the cutter body 3 during movement.
[0039] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-4 The slider 40 is connected to the support frame 8, and the top of the support frame 8 is equipped with a lifting cylinder 4. The support frame 8 effectively limits the position of the fixed plate 9 and the position of the lifting cylinder 4, which facilitates the connection between the mounting plate 2 and the external drive equipment.
[0040] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-3 The bottom of the support frame 8 is equipped with a fixing plate 9, and the outer wall of the fixing plate 9 is equipped with a sensor 5. The sensor 5 is a device that can sense or detect specific physical quantities, chemical quantities, biological quantities and other information in the external environment, and convert these detected information into output electrical signals or other signal forms that are easy to process, transmit and store according to certain rules. When the sensor 5 detects the groove 12 on the outer wall of the yarn tube body 1, the right tip 6 at both ends stops rotating.
[0041] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-5A clamp 90 is provided at one end of the fixing plate 9, and a cutter body 3 is installed on the inner wall of the clamp 90. The clamp 90 and the cutter body 3 are connected by bolts, which facilitates the replacement and maintenance of the cutter body 3 and limits the position of the cutter body 3.
[0042] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-5 The outer wall of the cutter body 3 is provided with a positioning plate 10, and the positioning plate 10 is L-shaped. The shape of the positioning plate 10 effectively protects the cutter body 3 and reduces the impact of the external environment on the cutter body 3.
[0043] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-5 A drive motor is provided at one end of the right tip 6, and one end of both the right tip 6 and the left tip 11 is fitted onto the inner wall of the yarn tube body 1. A fixing frame is provided on the outer wall of both the right tip 6 and the left tip 11, and a drive motor is provided at one end of the right tip 6, which drives the right tip 6 to rotate.
[0044] Second embodiment:
[0045] Please see Figure 3 , Figure 5 The difference between Embodiment 2 and Embodiment 1 is that, while retaining the features of Embodiment 1, an electric push rod is added to the bottom of the fixing plate 9, and the electric push rod is connected to the clamp 90, which facilitates the adjustment of the position of the cutter body 3 and improves the cutting accuracy.
[0046] An electric push rod is provided at the bottom of the fixed plate 9, and a clamp 90 is installed at the output end of the electric push rod. A cutter body 3 is installed on the inner wall of the clamp 90, and a positioning plate 10 is provided on the outer wall of the clamp 90. The positioning plate 10 is movably connected to the fixed plate 9. A sleeve rod is provided at one end of the positioning plate 10 near the fixed plate 9. The sleeve rod is movably set inside the fixed plate 9, which improves the stability of the positioning plate 10 when it moves.
[0047] In practical operation, the left tip 11 and the right tip 6 press against the two ends of the yarn tube body 1. The right tip 6 drives the yarn tube body 1 to rotate. When the sensor 5 detects the groove 12 on the outer wall of the yarn tube body 1, the drive motor of the right tip 6 at one end stops rotating. Then, the cutter body 3 moves to the cutting position through the transverse guide rail 20. The lifting cylinder 4 drives the cutter body 3 to descend and cut along the groove 12. This effectively reduces damage to the yarn tube body 1, extends the service life of the yarn tube body 1, and improves work efficiency.
[0048] Furthermore, an electric push rod is added to one end of the fixed plate 9, and the output end of the electric push rod is connected to the clamp 90. The electric push rod pushes the clamp 90 and the positioning plate 10 to move towards one end of the yarn tube body 1, so that the cutter body 3 is aligned with the groove 12. This makes it suitable for yarn tube bodies 1 of different specifications to a certain extent, thus improving the practicality of the mechanism.
[0049] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. A yarn cutting mechanism, comprising a yarn tube body (1), characterized in that: The outer wall of the yarn tube body (1) is provided with multiple sets of grooves (12), and the two ends of the yarn tube body (1) are respectively equipped with a right tip (6) and a left tip (11). The top of the yarn tube body (1) is provided with an installation plate (2), and a support frame (8) is movably installed on the outer wall of the installation plate (2). A fixing plate (9) is installed at the bottom of the support frame (8), and a cutter body (3) is provided at one end of the fixing plate (9). A positioning plate (10) is provided on the outer wall of the cutter body (3).
2. The yarn cutting mechanism according to claim 1, characterized in that: The bottom of the mounting plate (2) is provided with a transverse guide rail (20), and the outer wall of the transverse guide rail (20) is provided with a slider (40).
3. The yarn cutting mechanism according to claim 2, characterized in that: The slider (40) is connected to the support frame (8), and a lifting cylinder (4) is installed on the top of the support frame (8).
4. The yarn cutting mechanism according to claim 1, characterized in that: The bottom of the support frame (8) is fitted with a fixing plate (9), and a sensor (5) is fitted on the outer wall of the fixing plate (9).
5. The yarn cutting mechanism according to claim 1, characterized in that: One end of the fixing plate (9) is provided with a clamp (90), and the inner wall of the clamp (90) is equipped with a cutter body (3).
6. The yarn cutting mechanism according to claim 1, characterized in that: The outer wall of the cutter body (3) is provided with a positioning plate (10), and the positioning plate (10) is L-shaped.
7. The yarn cutting mechanism according to claim 1, characterized in that: One end of the right tip (6) is equipped with a drive motor, and one end of both the right tip (6) and the left tip (11) are fitted onto the inner wall of the yarn tube body (1).
8. The yarn cutting mechanism according to claim 1, characterized in that: The positioning plate (10) is sleeved on the outer wall of the cutter body (3), and a sleeve rod is fixedly provided at one end of the positioning plate (10) near the fixing plate (9), and the sleeve rod is sleeved inside the fixing plate (9).
9. The yarn cutting mechanism according to claim 1, characterized in that: The bottom of the fixed plate (9) is provided with an electric push rod, and the output end of the electric push rod is connected to the clamp (90), and the fixed plate (9) and the clamp (90) are movably connected.