Blade guard

CN224849135UActive Publication Date: 2026-10-13CHANGZHOU LONGFU KNITTING CO LTD
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Patent Information

Application Number
CN202522487674.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-24
Publication Date
2026-10-13
Estimated Expiration
2035-11-24

AI Technical Summary

Technical Problem

[0003]但在实际使用过程中,纺织用丝线切断刀片的存放、周转及闲置阶段面临诸多问题:一方面,纺织车间环境复杂,刀片多与其他工具混放,无有效防护的刃口易与布料、纱线、金属部件等发生摩擦,导致刃口卷边、钝化,直接影响丝线切断的平整性,进而影响纺织产品质量;另一方面,纺织作业流程中刀片需频繁取放,裸露的刃口极易造成操作人员误触划伤,尤其在流水线作业、多人协作的场景下,安全风险显著提升

Benefits of technology

1、防护全面可靠,保障安全与刀片性能:通过保护套本体的安放槽与分隔块配合,对刀片刃口形成有效遮挡,避免存放、周转过程中刃口与布料、纱线、金属部件等发生摩擦,防止刃口卷边、钝化,保障丝线切断的平整性与纺织产品质量;同时杜绝操作人员误触割伤的风险,尤其适配纺织车间流水线作业、多人协作的场景,显著降低安全隐患。

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Abstract

The utility model relates to blade protection technical field especially a kind of blade anti-cutting protective sleeve.A kind of blade anti-cutting protective sleeve, including protective sleeve body, the bottom of protective sleeve body is equipped with the accommodation groove for blade clamping, the front of protective sleeve body is spaced apart and is equipped with multiple partition blocks, every partition block inside has the embedded slot for blade passing, the blade edge can be extended into the space between partition block.This blade anti-cutting protective sleeve is equipped with the accommodation groove for textile silk thread cutting blade clamping, its front is distributed with multiple interval arrangement partition blocks, every partition block inside is equipped with the embedded slot for adapting blade passing, after blade is loaded, blade edge can be naturally extended into the gap between partition block, effective shielding is formed with the aid of partition block, avoid blade edge direct exposure, both can prevent blade edge abrasion, and can also eliminate the risk of accidental cut injury.
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Description

Technical Field

[0001] This utility model relates to the field of blade protection technology, and in particular to a blade anti-cutting protective sleeve. Background Technology

[0002] Blades are the core tools for cutting yarn in the textile industry, widely used in multiple processes such as spinning, weaving, fabric cutting, and sewing finishing. Their sharp edges can quickly cut various natural fibers, chemical fibers, and blended fiber yarns, ensuring the continuity and precision of textile operations.

[0003] However, in actual use, textile thread cutting blades face many problems in storage, turnover, and idle periods: On the one hand, the textile workshop environment is complex, and the blades are often mixed with other tools. The unprotected blade edges are prone to friction with fabrics, yarns, metal parts, etc., resulting in curling and dulling of the blade edges, which directly affects the smoothness of thread cutting and thus affects the quality of textile products; On the other hand, the blades need to be frequently picked up and put away in the textile operation process, and the exposed blade edges are very likely to cause accidental cuts to operators, especially in assembly line operations and multi-person collaboration scenarios, where the safety risks are significantly increased.

[0004] Existing protective methods for textile cutting blades have significant shortcomings: traditional plastic and paper sheaths are simple in structure, only providing basic protection to the blade edge, offering poor stability, and are prone to falling off during workshop handling and tool turnover; while dedicated storage boxes offer strong protection, they are bulky, inconvenient to store near textile equipment, have low retrieval efficiency, and are difficult to adapt to different specifications of textile cutting blades, resulting in poor versatility. Furthermore, some protective structures are cumbersome in design, requiring additional operations to retrieve and place the blade, affecting the continuity of textile operations; and some protective sheath materials are not wear-resistant, easily aging and breaking after prolonged contact with fiber dust and minor oil stains in the textile workshop, failing to provide long-term reliable protection.

[0005] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a blade cut-proof protective sleeve, making it more valuable for industrial use. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a blade anti-cutting protective sleeve.

[0007] The present invention provides a blade anti-cutting protective sleeve, including a protective sleeve body. The bottom of the protective sleeve body has a mounting groove for inserting the blade. The front of the protective sleeve body has multiple partition blocks arranged at intervals. Each partition block has an embedding groove on its inner side for the blade to pass through. The cutting edge of the blade can extend into the space between the partition blocks.

[0008] This blade cut-proof protective sleeve is equipped with a slot for mounting textile thread cutting blades. Its front has multiple spaced-apart partitions, and each partition has an insert groove on its inner side that is adapted for the blade to pass through. After the blade is installed, the cutting edge can naturally extend into the gap between the partitions. With the help of the partitions, the blade edge is effectively shielded, preventing it from being directly exposed. This not only prevents the blade edge from wearing down, but also eliminates the risk of accidental cuts.

[0009] Furthermore, the top of the protective sleeve body is an end limiting head, and the end of the end limiting head has an end baffle.

[0010] The top of the protective cover body is equipped with an end limiting head, and the end of the end limiting head is equipped with an end baffle. The end baffle forms a precise limit on the tip of the blade installed in the protective cover, preventing the blade from slipping off the top during storage or removal, and ensuring the stability of the protection.

[0011] Furthermore, the protective cover body has an upwardly bent tail limiter, and the end of the tail limiter has a tail baffle.

[0012] The protective sleeve body has an upwardly bent tail limit head at the tail end, and the end of the tail limit head is equipped with a tail baffle, which can form a stable limit on the tail of the inserted blade, preventing the blade from falling out of the tail end during carrying or turnover, and further improving the reliability of the protective structure.

[0013] Furthermore, the lower edge of the tail baffle is higher than the lower edge of the protective cover body.

[0014] The lower edge of the tail baffle is higher than the lower edge of the protective cover body. This design allows the tail of the blade to have a larger exposed area, making it convenient for operators to directly hold and squeeze the tail of the blade to pull it out. The blade can be replaced quickly without additional tools, greatly improving ease of use.

[0015] Furthermore, the placement groove extends into the end limiting head and the tail limiting head, and the length of the placement groove is equal to the blade length.

[0016] The mounting slot extends all the way to the interior of the end limiting head and the tail limiting head, and its length is adapted to the blade, allowing the blade to be fully embedded and fit against the inner wall of the mounting slot. Together with the limiting heads at both ends, it achieves stable positioning in the entire length direction, preventing the blade from shifting or shaking inside the protective sleeve, and ensuring the reliability of protection.

[0017] Furthermore, the bottom of the separator shrinks inward, and the bottom of the separator is injection molded integrally with the protective sleeve body.

[0018] The bottom of the divider block is tapered inward and is made with the protective sleeve body using an injection molding process. This not only enhances the firmness of the connection between the divider block and the body, preventing it from falling off or breaking during use, but also provides better guidance for blade insertion through the bottom tapering structure, making blade installation smoother.

[0019] Furthermore, the dividers are arranged at an angle on the protective sleeve body.

[0020] The divider is angled on the protective sleeve body, which not only creates a more reasonable clearance between the blade edge and the divider, avoiding excessive friction between the blade edge and the inner wall of the divider and causing wear, but also guides airflow to quickly dissipate any fiber dust that may remain after the blade is used. At the same time, it makes the force applied when inserting and removing the blade smoother and improves the operating feel.

[0021] Furthermore, the divider can be broken off and removed from the protective cover body.

[0022] The divider can be broken off and removed directly from the protective case. By removing part or all of the divider, the exposed length of the blade edge can be flexibly increased, allowing the protective case to adapt to the needs of different cutting scenarios. It can easily handle both short-distance precise cutting and long-distance efficient cutting, improving the flexibility of use.

[0023] Furthermore, the opening of the mounting slot is equipped with a guide chamfer.

[0024] The opening of the mounting slot has a guide chamfer, which provides a smooth guide for the blade insertion, preventing the blade from getting stuck at the edge of the opening. This allows the blade to be quickly and accurately embedded into the mounting slot, while reducing bumps and damage to the blade edge during installation, improving ease of operation and blade protection.

[0025] By means of the above-described solution, the present invention has at least the following advantages: 1. Comprehensive and reliable protection, ensuring safety and blade performance: The protective sleeve body, with its mounting slot and partition block, effectively shields the blade edge, preventing friction between the blade edge and fabric, yarn, metal parts, etc., during storage and handling. This prevents the blade edge from curling or dulling, ensuring the smoothness of thread cutting and the quality of textile products. At the same time, it eliminates the risk of accidental cuts by operators, making it particularly suitable for assembly line operations and multi-person collaboration scenarios in textile workshops, significantly reducing safety hazards.

[0026] 2. Stable installation and strong adaptability: The mounting groove extends into the end limit head and the tail limit head, and its length is adapted to the blade. With the double limiting of the end baffle and the tail baffle, the blade is stably positioned in the entire length direction, preventing the blade from shifting, shaking or slipping in the protective sleeve. The injection-molded one-piece structure design enhances the firmness of the component connection, ensuring that it is not easily damaged or detached after long-term use, and is suitable for the complex use environment of textile workshops.

[0027] 3. Convenient operation and improved work efficiency: The guide chamfer of the mounting slot opening and the shrinking structure at the bottom of the separator block provide smooth guidance for blade insertion, making the installation process quick and accurate; the setting of the lower edge of the tail baffle protruding above the protective sleeve body leaves exposed space for the tail of the blade, which can be squeezed and pulled out by hand without additional tools, greatly simplifying the blade replacement process; the inclined setting of the separator block further optimizes the insertion and removal feel, reduces operating resistance, and ensures the continuity of textile operations.

[0028] 4. Flexible use and adaptable to various scenarios: The dividers can be broken off and removed as needed, and the exposed length of the blade edge can be flexibly adjusted. It can meet the needs of short-distance precise cutting as well as long-distance efficient cutting scenarios, and is suitable for the use needs of different processes in the textile industry such as spinning, weaving, and fabric cutting. The overall structure is compact and small in size, making it easy to store with textile equipment nearby, improving retrieval efficiency, and solving the problems of inconvenience and poor versatility of traditional storage boxes.

[0029] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show a certain embodiment of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a utility model Figure 1 A magnified view of a portion of the image; Figure 3 This is a utility model Figure 1 A bottom view; Figure 4 This is a utility model Figure 1 Main view; Figure 5 This is a schematic diagram of another embodiment of the present invention; In the figure: 1. Protective sleeve body, 2. Placement slot, 3. Divider block, 4. Embedding slot, 5. End limiting head, 6. End baffle, 7. Tail limiting head, 8. Tail baffle. Detailed Implementation

[0032] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0033] See Figures 1-4 First, align the textile thread cutting blade with the mounting slot 2 at the bottom of the protective sleeve body 1, and let the blade slide into place along the mounting slot 2. At the same time, let the blade pass through the embedding slot 4 inside each partition block 3, so that the blade edge naturally extends into the space between the partition blocks 3, completing the installation and fixing of the blade. When the blade is needed, the thread cutting operation can be performed by holding the protective sleeve body 1. The partition blocks 3 can effectively block the blade edge to prevent accidental contact. After the operation is completed, there is no need to disassemble the blade; it can be stored directly for protection. This workflow, with the cooperation of the protective sleeve body 1, mounting slot 2, partition blocks 3 and embedding slot 4, not only achieves rapid positioning and installation of the blade, but also provides comprehensive protection for the blade edge through the partition blocks 3, preventing blade edge wear or operator injury during storage and operation, while not affecting the normal cutting function of the blade, thus improving the safety and convenience of thread cutting operations in the textile industry.

[0034] During the installation of the blade into the mounting slot 2 of the protective sleeve body 1, the width of the mounting slot 2 is set to be less than the thickness of the blade. The blade is initially fixed by the elastic clamping force between the slot wall and the blade. Subsequently, the tip of the blade will gradually fit against the end limiting head 5 at the top of the protective sleeve body 1 as the installation progresses, until it abuts against the end baffle 6 at the end of the end limiting head 5. The end baffle 6 then forms a precise limit on the tip of the blade, completing the double fixation of the blade at the top of the protective sleeve body 1. This workflow, through the synergistic effect of the protective sleeve body 1, mounting slot 2, end limiting head 5 and end baffle 6, not only uses the width design of the mounting slot 2 and the limiting effect of the end baffle 6 to prevent the blade from slipping off or shifting from the top of the protective sleeve body 1 during storage, retrieval or operation, ensuring the stability of the blade after installation, but also prevents external objects from directly contacting the tip of the blade, reducing blade wear, and improving the safety of the operation process, making the yarn cutting operation in the textile industry more reliable and efficient.

[0035] After the blade is installed in the mounting slot 2 of the protective sleeve body 1, the tail limiting head 7, which is bent upward at the tail end of the protective sleeve body 1, forms a circumferential limiting on the tail end of the blade. The tail baffle 8 at the end of the tail limiting head 7 fits tightly against the tail end of the blade, further restricting the axial movement of the blade and completing the stable fixation of the tail end of the blade. This working process, through the coordinated cooperation of the protective sleeve body 1, the tail limiting head 7, and the tail baffle 8, can not only effectively prevent the blade from coming off the tail end of the protective sleeve body 1 during the picking, handling, or use of textile operations, but also achieve full-stroke fixation of the blade with the clamping action of the mounting slot 2 and the limiting effect of the end baffle 6. Furthermore, the bending structure of the tail limiting head 7 can enhance the structural strength of the tail end of the protective sleeve, preventing deformation after long-term use. At the same time, the tail baffle 8 can prevent impurities such as fiber dust and oil from entering the gap between the tail end of the blade and the mounting slot 2, reducing blade wear, improving protection reliability, and making the yarn cutting operation in the textile field safer and more stable.

[0036] After the blade is installed and fixed in the mounting slot 2 of the protective sleeve body 1, the lower edge of the tail baffle 8 is higher than the lower edge of the protective sleeve body 1, leaving a sufficient exposed area at the tail of the blade. When the blade needs to be replaced, the operator can directly hold and squeeze the exposed area of ​​the blade tail to easily pull the blade out of the mounting slot 2. Then, the new blade is inserted into the mounting slot 2 to complete the replacement. This workflow, with the structural cooperation between the tail baffle 8 and the protective sleeve body 1, allows for quick blade removal and installation without additional tools, greatly improving the convenience of blade replacement in textile operations. At the same time, the higher tail baffle 8 reduces the contact wear between the bottom of the protective sleeve body 1 and the table surface, and also partially shields the tail of the blade, preventing the adhesion of impurities such as fiber dust. This ensures operational efficiency and extends the service life of the protective sleeve and the blade, making the yarn cutting operation in the textile industry more efficient and worry-free.

[0037] During blade installation, align the blade with the mounting groove 2 at the bottom of the protective sleeve body 1, and push it in along the extension direction of the mounting groove 2. Since the mounting groove 2 extends all the way to the end limiting head 5 and the tail limiting head 7, and the length of the mounting groove 2 matches the blade length, the blade will be completely embedded along the mounting groove 2 and fit against the groove wall. Finally, its top end abuts against the end baffle 6 of the end limiting head 5, and its tail end fits against the tail baffle 8 of the tail limiting head 7, completing precise positioning along the entire length. This workflow involves the protective sleeve body 1, the mounting groove 2, the tail baffle ... The coordinated action of the groove 2, the end limiting head 5, and the tail limiting head 7 not only ensures that the blade is stably installed within the protective sleeve without shifting or shaking, preventing blade displacement during textile operations and handling, thus avoiding any impact on use or safety hazards, but also reduces contact between the blade and external dust and oil through the complete enclosure of the groove 2. This also ensures the precision of the fit between the blade edge and the separator block 3, guaranteeing the stability of the cutting operation and extending the blade's lifespan, making yarn cutting operations in the textile industry more reliable and efficient.

[0038] When the blade is installed into the mounting slot 2 of the protective sleeve body 1, the inward-retracting structure at the bottom of the separator block 3 provides a smooth guide for the blade to pass through the embedding slot 4, helping the blade to be quickly and accurately aligned and embedded. Furthermore, the bottom of the separator block 3 and the protective sleeve body 1 are integrally injection molded, ensuring a stable connection between the two and preventing the separator block 3 from falling off or breaking during installation or use. This workflow, through the structural design and molding process of the separator block 3, simplifies the installation operation of the blade in textile operations, improves installation efficiency, and enhances the overall structural stability of the protective sleeve, enabling it to withstand frequent handling and turnover in textile workshops for a long time. At the same time, the inward-retracting bottom of the separator block 3 reduces contact friction with the blade edge, protecting the sharpness of the blade edge and making the yarn cutting operation in the textile field smoother and more durable.

[0039] See Figure 5 When installing the blade, the inclined setting of the divider block 3 on the protective sleeve body 1 cooperates with the inward-shrinking structure at its bottom, providing a smoother guiding path for the blade to pass through the embedding groove 4. This allows the blade to easily and accurately embed into the mounting groove 2 along the inclined direction. During use, the inclined angle of the divider block 3 allows the blade edge to form a reasonable clearance space with the inner wall of the divider block 3, without affecting the normal cutting of the yarn. This workflow, through the inclined cooperation design of the divider block 3 and the protective sleeve body 1, not only reduces the insertion and removal resistance during blade installation and improves the operating feel, but also avoids excessive friction between the blade edge and the inner wall of the divider block 3, which can cause wear. At the same time, the inclined structure can guide the airflow to quickly dissipate the fiber dust remaining in the textile operation, preventing dust accumulation from affecting the use of the blade, making yarn cutting operations in the textile field smoother and the blade edge more durable.

[0040] Based on the different thread cutting requirements in textile operations, when short-distance precise cutting is required, the separator block 3 on the protective sleeve body 1 can be retained to protect the blade edge. When long-distance efficient cutting is required, the separator block 3 at the corresponding position can be broken off and removed from the protective sleeve body 1 by hand to adjust the exposed length of the blade edge to adapt to the working scenario. When the long blade edge is no longer needed, a new protective sleeve can be replaced or the remaining separator block 3 can be retained for continued use. This workflow, through the detachable design of the separator block 3 and the protective sleeve body 1, allows for flexible switching of the blade edge length without additional tools. It adapts to the needs of different textile processes such as spinning, weaving, and fabric cutting, and when the long blade edge is not used, the separator block 3 continuously protects the unexposed blade edge, avoiding accidental injury and blade edge wear, making thread cutting operations in the textile field more flexible and safer.

[0041] When the blade is installed into the mounting slot 2 of the protective sleeve body 1, the guide chamfer at the opening of the mounting slot 2 will first contact the tip of the blade and form a smooth guide, guiding the blade to accurately align with the opening of the mounting slot 2, avoiding blade jamming or deviation, allowing the blade to slide smoothly into the mounting slot 2 along the guide chamfer and pass through the embedding slot 4 of the separator block 3 to complete the installation; this workflow, with the guide chamfer design of the mounting slot 2, not only simplifies the installation operation of the blade in textile operations, reduces the difficulty of alignment, and improves installation efficiency, but also reduces the impact damage between the blade edge and the edge of the mounting slot 2 opening when the blade is inserted, protecting the sharpness of the blade edge, while making the installation process smoother and less labor-intensive, without the need for repeated adjustments to the alignment, further ensuring the continuity and convenience of yarn cutting operations in the textile field.

[0042] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A blade anti-cutting protective sleeve, characterized in that: The protective sleeve body (1) has a mounting groove (2) at the bottom for inserting the blade, and multiple partition blocks (3) are arranged at intervals on the front of the protective sleeve body (1). Each partition block (3) has an embedding groove (4) on its inner side for the blade to pass through, and the blade edge can be inserted into the space between the partition blocks (3).

2. The blade anti-cut protective sleeve according to claim 1, characterized in that: The top of the protective sleeve body (1) is an end limiting head (5), and the end of the end limiting head (5) has an end baffle (6).

3. A blade anti-cut protective sleeve according to claim 1 or 2, characterized in that: The protective sleeve body (1) has an upwardly bent tail limit head (7), and the end of the tail limit head (7) has a tail baffle (8).

4. The blade anti-cut protective sleeve according to claim 3, characterized in that: The lower edge of the tail baffle (8) is higher than the lower edge of the protective cover body (1).

5. A blade anti-cutting protective sleeve according to claim 3, characterized in that: The placement groove (2) extends into the end limiting head (5) and the tail limiting head (7), and the length of the placement groove (2) is equal to the blade length.

6. A blade anti-cutting protective sleeve according to claim 3, characterized in that: The bottom of the partition block (3) shrinks inward, and the bottom of the partition block (3) and the protective sleeve body (1) are integrally injection molded.

7. A blade anti-cutting protective sleeve according to claim 3, characterized in that: The separator (3) is set at an angle on the protective sleeve body (1).

8. A blade anti-cutting protective sleeve according to claim 3, characterized in that: The separator (3) can be broken off and removed from the protective cover body (1).

9. A blade anti-cutting protective sleeve according to claim 3, characterized in that: The opening of the mounting slot (2) is provided with a guide chamfer.