Spinning frame herringbone arm positioning structure
By adopting a positioning pin and limit block structure on the herringbone arm of the spinning machine, the problem of loosening and falling off of the positioning pin is solved, a stable connection is achieved, maintenance work is reduced, and production efficiency and cost-effectiveness are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI HUAMAO TEXTILE
- Filing Date
- 2025-04-22
- Publication Date
- 2026-05-15
AI Technical Summary
The positioning pins of the herringbone arm of the spinning machine frequently fall off due to loose fastening screws, causing frame failures during yarn doffing, which is complicated and costly to repair.
The system employs a positioning pin and limit block structure, with the limit block moving synchronously via a transmission component to achieve a stable connection between the main arm and the diagonal brace arm, preventing the positioning pin from falling off. Elastic components and retaining rings are used to improve stability and convenience.
It effectively prevents the positioning pins from falling off, reduces maintenance needs, saves manpower and resources, ensures production progress, and reduces costs.
Smart Images
Figure CN224243335U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of herringbone arm technology for spinning machines, and more specifically, to a positioning structure for herringbone arms of spinning machines. Background Technology
[0002] A spinning frame is a key piece of equipment in the textile industry used to process roving into fine yarn, further stretching and twisting the fiber material to finally produce fine yarn suitable for weaving or knitting.
[0003] The collective doffing device on a ring spinning frame is mainly used to automate the doffing process of ring spinning, that is, to remove the already wound ring yarn bobbin from the ring spinning tube and prepare a new ring yarn bobbin for the next production cycle. The V-arm descends to the lowest position to grab an empty bobbin, then rises above the storage head to release the bobbin, then rises above the spindle to grab a full ring yarn bobbin, and then descends to place the full ring yarn bobbin into the conveyor tray.
[0004] Currently, the main arm and diagonal support arm of the A-frame spinning frame are connected by a locating pin. The locating pin is a straight round pin, passing through a pin hole between the main arm and the diagonal support arm, and is secured with a screw. However, due to frequent yarn doffing and prolonged operation of the A-frame, the locating pin may repeatedly fall off due to loosening of the fastening screws. If the locating pin falls off, the A-frame will not provide support during yarn doffing and will continue to fall, potentially breaking the spinning frame. This results in a large and complicated repair process, is time-consuming and labor-intensive, significantly impacting the spinning frame's production schedule and incurring high costs.
[0005] Therefore, it is necessary to provide a herringbone arm positioning structure for spinning machines to solve the above-mentioned technical problems. Utility Model Content
[0006] The purpose of this invention is to provide a positioning structure for the herringbone arm of a spinning machine to solve the above-mentioned technical problems.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] A herringbone arm positioning structure for a spinning frame, installed on the herringbone arm of the spinning frame, wherein the herringbone arm includes a main arm and a diagonal support arm, comprising:
[0009] The positioning pin is adapted to the pin hole on the main arm and the diagonal brace arm. At least one retractable limiting block is provided on both sides of the positioning pin, and the limiting blocks on both sides are symmetrical to each other.
[0010] A transmission component, located on the positioning pin, is used to drive multiple limiting blocks to move synchronously toward the interior of the positioning pin.
[0011] Furthermore, the outer wall of the positioning pin is provided with an inner groove that is slidably connected to the limiting block, and an elastic element is provided between the bottom wall of the inner groove and the end of the limiting block.
[0012] Furthermore, the inner wall of the positioning pin has a transmission cavity communicating with the recessed groove, and the transmission component includes:
[0013] A drive shaft is rotatably mounted on the inner wall of the transmission cavity. Two rope winding drums are provided on the drive shaft. At least one traction rope is wound and connected to the rope winding drums. The other end of the traction rope extends into the recessed groove and is connected to the limiting block.
[0014] Furthermore, the side of the limiting block facing the end of the positioning pin is provided as an inclined surface.
[0015] Furthermore, a retaining ring is movably sleeved on the outer wall of the positioning pin, and a groove adapted to the limiting block is provided on the retaining ring.
[0016] Furthermore, it also includes a protective cap, the inner wall of which is provided with an internal thread, and both ends of the positioning pin are provided with external threads that are compatible with the internal thread of the protective cap.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] This solution inserts positioning pins into the pin holes of the main arm and the diagonal support arm. The limiting blocks at both ends of the positioning pins restrict the diagonal support arms on both sides, preventing the positioning pins from falling out without affecting the normal yarn feeding operation of the herringbone arms. This avoids the current situation where positioning pins fall out due to loose fastening screws, preventing frame failure and breakage caused by the positioning pins falling out. It reduces the need for maintenance, saves a lot of manpower, material resources and time, effectively ensures the production progress of the spinning machine, reduces costs, and has high practicality.
[0019] When installing or removing the positioning pin of this solution, the limiting block can be moved towards the inside of the positioning pin by the transmission component without manually pressing the limiting block. This avoids the inconvenience of pressing by hand, allowing the limiting block to move more quickly and smoothly, reducing manpower, making it convenient to operate and effective. Attached Figure Description
[0020] Figure 1 This is a partial structural diagram of the herringbone arm of the spinning machine of this utility model;
[0021] Figure 2 for Figure 1 Enlarged structural diagram at point A in the diagram;
[0022] Figure 3 This is an exploded view of the positioning structure of this utility model;
[0023] Figure 4 This is a cross-sectional view of the positioning pin of this utility model.
[0024] Figure 5 for Figure 4 A magnified structural diagram at point B in the diagram.
[0025] Explanation of the labels in the diagram:
[0026] 1. Spinning machine; 2. Main arm; 3. Diagonal support arm; 4. Positioning pin; 5. Limiting block; 6. Transmission components; 61. Drive shaft; 62. Rope winding drum; 63. Traction rope; 7. Inner groove; 8. Elastic element; 9. Transmission cavity; 10. Retaining ring; 11. Groove; 12. Protective cap. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] Please see Figure 1-5 A herringbone arm positioning structure for a spinning frame, installed on the herringbone arm of the spinning frame 1. The herringbone arm includes a main arm 2 and a diagonal support arm 3, comprising:
[0029] The positioning pin 4 is adapted to the pin holes on the main arm 2 and the diagonal brace 3. At least one telescopic limit block 5 is provided on both sides of the positioning pin 4, and the limit blocks 5 on both sides are symmetrical to each other.
[0030] The transmission component 6 is mounted on the positioning pin 4 and is used to drive multiple limit blocks 5 to move synchronously toward the interior of the positioning pin 4.
[0031] In use, the current positioning pins are no longer used. The positioning pin 4 of this solution is inserted into the pin holes of the main arm 2 and the diagonal support arm 3. During insertion, the limiting block 5 is retracted inside the positioning pin 4. After the positioning pin 4 is fully inserted, i.e., after the main arm 2 and the diagonal support arm 3 are connected, the limiting blocks 5 at both ends of the positioning pin 4 will pop out, i.e., the limiting blocks 5 return to their initial state. At this time, the limiting blocks 5 at both ends of the positioning pin 4 can restrict the diagonal support arms 3 on both sides, which can prevent the positioning pin 4 from falling off the main arm 2 and the diagonal support arm 3, and does not affect the normal yarn feeding operation of the main arm 2 and the diagonal support arm 3 of the herringbone arm. This avoids the situation where the positioning pin falls off due to the loose fastening screws of the current positioning pin, and prevents the frame failure and breakage caused by the positioning pin falling off. It reduces the need for maintenance, saves a lot of manpower, material resources and time, effectively ensures the production progress of the spinning machine, reduces the cost, and has high practicality.
[0032] When installing or removing the positioning pin 4 of this solution, the limiting block 5 can be moved towards the inside of the positioning pin 4 by the transmission component 6, so that the limiting block 5 can be moved more conveniently without manually pressing the limiting block 5, avoiding the inconvenience of pressing by hand, making the limiting block 5 move faster and smoother, reducing manpower, saving time and effort, facilitating operation, and achieving good results.
[0033] For preferred options, please refer to [link / reference]. Figure 4-5 The outer wall of the positioning pin 4 has an inner groove 7 that slides with the limiting block 5. An elastic element 8 is provided between the bottom wall of the inner groove 7 and the end of the limiting block 5. In this application, the elastic element 8 can be a spring. With this design, when the limiting block 5 is compressed, it will move towards the inside of the inner groove 7 and compress the elastic element 8, causing the elastic element 8 to deform elastically. When the limiting block 5 enters the inner groove 7, the positioning pin 4 can pass through the pin holes of the main arm 2 and the diagonal support arm 3 without obstruction. When the positioning pin 4 is inserted into place, the limiting block 5 is no longer compressed, and the rebound force of the elastic element 8 will drive the limiting block 5 to move out of the inner groove 7, eventually causing the limiting block 5 to reset. Thus, the limiting block 5 can play a limiting role.
[0034] For preferred options, please refer to [link / reference]. Figure 3-5 The inner wall of the positioning pin 4 has a transmission cavity 9 that communicates with the recessed groove 7. The transmission component 6 includes:
[0035] The drive shaft 61 is rotatably mounted on the inner wall of the transmission cavity 9. Two rope winding drums 62 are provided on the drive shaft 61. At least one traction rope 63 is wound and connected on the rope winding drum 62. The other end of the traction rope 63 extends into the recessed groove 7 and is connected to the limiting block 5.
[0036] This design allows the rotating drive shaft 61 to drive the rope drum 62 to rotate, which in turn winds the traction rope 63. The traction rope 63 then pulls the limiting block 5 into the recessed groove 7, thus achieving the function of moving the limiting block 5. This eliminates the need for manual pressing of the limiting block 5, making the operation more convenient, labor-saving, and efficient. Furthermore, rotating the drive shaft 61 allows multiple limiting blocks 5 to move synchronously, enabling single-person operation. This also makes installing or removing the positioning pin 4 simpler, faster, easier to learn, and more effective.
[0037] For preferred options, please refer to [link / reference]. Figure 1-3 It also includes a protective cap 12, the inner wall of which is provided with an internal thread, and the outer walls of both ends of the positioning pin 4 are provided with external threads that are compatible with the internal threads of the protective cap 12.
[0038] With this design, after the positioning pin 4 is installed on the main arm 2 and the diagonal brace 3, the protective cap 12 can be rotated and installed on both ends of the positioning pin 4. The protective cap 12 will cover both ends of the drive shaft 61, thereby avoiding external impacts such as bumps and accidental contact on the drive shaft 61, preventing the drive shaft 61 from breaking at both ends, and providing good protection.
[0039] For preferred options, please refer to [link / reference]. Figure 2-5 The limiting block 5 has an inclined surface on the side facing the end of the positioning pin 4. This design, with the limiting block 5's outward inclined surface, ensures that when the positioning pin 4 is inserted into the pin holes of the main arm 2 and the diagonal support arm 3, the inclined surface of the limiting block 5 is compressed by the pin holes, causing the limiting block 5 to move into the recessed groove 7. This eliminates the need to press the limiting block 5 or move it via the transmission component 6 during installation, further improving the ease of installation of the positioning pin 4 and demonstrating high practicality.
[0040] For preferred options, please refer to [link / reference]. Figure 2-3 A retaining ring 10 is movably sleeved on the outer wall of the positioning pin 4, and a groove 11 adapted to the limiting block 5 is provided on the retaining ring 10.
[0041] With this design, after the positioning pin 4 is inserted into the pin holes of the main arm 2 and the diagonal brace 3, that is, after the positioning pin 4 is installed, the retaining ring 10 is fitted onto the outer wall of the positioning pin 4, so that the limiting block 5 is in the position of the groove 11. The cooperation between the limiting block 5 and the retaining ring 10 can increase the limiting area of the diagonal brace 3. The increased contact area between the retaining ring 10 and the diagonal brace 3 can improve the blocking and limiting effect, thereby improving the stability of the positioning pin 4 during use.
[0042] It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art can make various modifications or changes based on them. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
[0043] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.
[0044] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
Claims
1. A herringbone arm positioning structure for a spinning frame, installed on the herringbone arm of a spinning frame (1), the herringbone arm comprising a main arm (2) and a diagonal support arm (3), characterized in that, include: The positioning pin (4) is adapted to the pin hole on the main arm (2) and the diagonal support arm (3). At least one retractable limiting block (5) is provided on both sides of the positioning pin (4), and the limiting blocks (5) on both sides are symmetrical to each other. A transmission component (6) is provided on the positioning pin (4) and is used to drive multiple limiting blocks (5) to move synchronously toward the inside of the positioning pin (4).
2. The herringbone arm positioning structure of the spinning frame according to claim 1, characterized in that, The outer wall of the positioning pin (4) is provided with an inner groove (7) that is slidably connected to the limiting block (5), and an elastic element (8) is provided between the bottom wall of the inner groove (7) and the end of the limiting block (5).
3. The herringbone arm positioning structure of the spinning frame according to claim 2, characterized in that, The inner wall of the positioning pin (4) is provided with a transmission cavity (9) communicating with the recessed groove (7), and the transmission component (6) includes: A drive shaft (61) is rotatably mounted on the inner wall of the drive cavity (9). Two rope winding drums (62) are provided on the drive shaft (61). At least one traction rope (63) is wound and connected on the rope winding drum (62). The other end of the traction rope (63) extends into the recessed groove (7) and is connected to the limiting block (5).
4. The herringbone arm positioning structure of the spinning frame according to claim 3, characterized in that, The limiting block (5) has an inclined surface on the side facing the end of the positioning pin (4).
5. The herringbone arm positioning structure of the spinning frame according to claim 1, characterized in that, The outer wall of the positioning pin (4) is movably fitted with a retaining ring (10), and the retaining ring (10) has a groove (11) that matches the limiting block (5).
6. The herringbone arm positioning structure of the spinning frame according to claim 1, characterized in that, It also includes a protective cap (12), the inner wall of which is provided with an internal thread, and both ends of the positioning pin (4) are provided with external threads that are compatible with the internal thread of the protective cap (12).