A kind of super wear-resistant coating reinforced anti-vibration composite guide needle of warp knitting machine
Patent Information
- Application Number
- CN202522547617.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-01
AI Technical Summary
The guide needles are prone to wear and vibration during the high-speed operation of the warp knitting machine, which can lead to yarn breakage, fabric defects, and reduced positioning accuracy, thus limiting production efficiency and equipment life.
The anti-vibration composite guide needle of the warp knitting machine is reinforced with an ultra-wear-resistant coating. By setting an alloy bonding layer and a wear-resistant coating on the outside of the guide needle, and installing a shock-absorbing component between the needle holder and the guide needle, including a shock-absorbing rubber strip and a shock-absorbing metal plate, the structural design and shock absorption effect of the guide needle are optimized.
It significantly reduces wear and vibration of the yarn guide needle, improves guiding accuracy and stability, extends the service life of the yarn guide needle, and enhances production efficiency and equipment reliability.
Smart Images
Figure CN224930746U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of textile components for warp knitting machines, specifically a vibration-resistant composite guide needle for warp knitting machines reinforced with an ultra-wear-resistant coating. Background Technology
[0002] The yarn guide needle is the core guiding component of a warp knitting machine, and its performance directly affects the weaving accuracy, production efficiency, and equipment lifespan. During the high-speed operation of the warp knitting machine, the yarn guide needle needs to repeatedly guide the yarn in interlacing motion, facing a dual technical challenge.
[0003] Continuous friction between the yarn and the surface of the guide needle can easily lead to needle wear and fuzzing, which in turn can cause yarn breakage and fabric defects, requiring frequent replacement of the guide needle and increasing production costs. On the other hand, the vibration generated by high-speed reciprocating motion will be transmitted to the needle body, causing the guide needle to deform and the positioning accuracy to decrease. Especially in multi-needle arrangement scenarios, the superposition of vibration will aggravate component wear and limit the speed increase potential of the warp knitting machine.
[0004] To address these issues, this invention provides a vibration-resistant composite guide needle for a warp knitting machine reinforced with an ultra-wear-resistant coating. Utility Model Content
[0005] To address the shortcomings of existing technologies, this invention provides a vibration-resistant composite guide needle for warp knitting machines reinforced with an ultra-wear-resistant coating, thus solving the aforementioned problems.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a super wear-resistant coating reinforced anti-vibration composite guiding warp knitting machine guide needle, comprising a needle frame, wherein multiple guide needles are uniformly fixedly installed at the bottom of the needle frame, and a shock-absorbing component is provided between the inner bottom of the needle frame and the top of the guide needles; the shock-absorbing component comprises a shock-absorbing rubber strip and a shock-absorbing metal plate, wherein the shock-absorbing rubber strip is fixedly installed at the inner top of the needle frame, and the shock-absorbing metal plate is fixedly installed at the inner top of the needle frame and embedded inside the shock-absorbing rubber strip, wherein the shock-absorbing metal plate is fixedly installed at the top of the multiple guide needles and is integrally formed with the guide needles, wherein the shock-absorbing metal plate and the guide needles are perpendicular to each other, and the shock-absorbing rubber strip is filled between the tops of every two guide needles. Preferably, the yarn guide needle includes a shank, a middle section, and a needle tip. The shank is located at the top of the yarn guide needle, the middle section is located in the middle of the yarn guide needle, and the needle tip is located at the bottom of the yarn guide needle.
[0007] Preferably, the width of the guide needle gradually increases from the shank to the middle section, and the width decreases sequentially from the middle section to the needle tip. This structural design can optimize the force distribution of the guide needle and improve the rigidity and guiding stability of the needle body. Preferably, the outer side of the yarn guide needle is provided with an alloy bonding layer and a wear-resistant coating from the inside to the outside.
[0008] Preferably, the yarn guide needle and the shock-absorbing metal plate are made of martensitic stainless steel. Martensitic stainless steel has both high strength and good processing performance, providing a reliable substrate for coating adhesion and shock-absorbing structure. Preferably, the alloy bonding layer is a nickel-chromium alloy layer, and the wear-resistant coating is a titanium nitride coating. The alloy bonding layer and the wear-resistant coating are compositely formed by physical vapor deposition. The nickel-chromium alloy layer enhances the bonding force between the substrate and the wear-resistant coating, while the titanium nitride coating has extremely high hardness and wear resistance. The combination of the two significantly improves the anti-friction ability of the guide needle surface.
[0009] Beneficial effects This invention provides a vibration-resistant composite guiding warp knitting machine guide needle reinforced with an ultra-wear-resistant coating. Compared with the prior art, it has the following advantages: 1. The ultra-wear-resistant coating reinforced anti-vibration composite guide needle of the warp knitting machine is composed of a composite shock-absorbing component consisting of a shock-absorbing rubber strip and an integrally formed shock-absorbing metal plate. The shock-absorbing rubber strip can directly absorb the vibration energy generated by the movement of the guide needle, while the shock-absorbing metal plate disperses the vibration stress through its own rigidity. In addition, the shock-absorbing rubber strip filled between the tops of the guide needles can avoid mutual interference of multiple needle vibrations, significantly reduce the vibration amplitude of the needle body, and improve the positioning accuracy.
[0010] 2. The ultra-wear-resistant coating reinforces the vibration-resistant composite guide needle of the warp knitting machine. The guide needle adopts a gradient width design. The increased width from the needle shank to the middle section can enhance the connection strength with the shock absorption component, and the decreasing width from the middle section to the needle tip can optimize the smoothness of the guide. Combined with the martensitic stainless steel material, it takes into account both rigidity and toughness, and avoids needle deformation or breakage. Attached Figure Description
[0011] 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 from these drawings without creative effort.
[0012] Figure 1 This is a perspective view of the external structure of this utility model; Figure 2 This is a three-dimensional view of the bottom structure of this utility model; Figure 3 This is a structural front view of the present invention; Figure 4 This is a three-dimensional view of the overall structure of the yarn guide needle of this utility model.
[0013] In the diagram: 1. Yarn guide needle; 11. Needle shank; 12. Middle section; 13. Needle tip; 2. Shock-absorbing component; 21. Shock-absorbing rubber strip; 22. Shock-absorbing metal plate; 3. Needle frame; 4. Alloy bonding layer; 5. Wear-resistant coating. Detailed Implementation
[0014] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," 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 application 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, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0015] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.
[0016] Reference Figures 1 to 4 This application provides a vibration-resistant composite guide needle for a warp knitting machine reinforced with an ultra-wear-resistant coating, comprising a needle frame 3. Multiple guide needles 1 are uniformly fixedly mounted on the bottom of the needle frame 3. A shock-absorbing component 2 is provided between the inner bottom of the needle frame 3 and the top of the guide needles 1. The shock-absorbing component 2 includes a shock-absorbing rubber strip 21 and a shock-absorbing metal plate 22. The shock-absorbing rubber strip 21 is fixedly mounted on the inner top of the needle frame 3, and the shock-absorbing metal plate 22 is fixedly mounted on the inner top of the needle frame 3 and embedded inside the shock-absorbing rubber strip 21. The shock-absorbing metal plate 22 is fixedly mounted on the top of the multiple guide needles 1, and is integrally formed with the guide needles 1. The shock-absorbing metal plate 22 and the guide needles 1 are perpendicular to each other. The shock-absorbing rubber strip 21 fills the space between the tops of every two guide needles 1. The guide needle 1 includes a needle shank 11, a middle section 12, and a needle tip 13. The needle shank 11 is located at the top of the guide needle 1, the middle section 12 is located in the middle of the guide needle 1, and the needle tip 13 is located at the bottom of the guide needle 1. The width of the needle guide needle 1 gradually increases from the shank 11 to the middle section 12, and the width of the middle section 12 to the needle tip 13 gradually decreases.
[0017] The outer side of the yarn guide needle 1 is provided with an alloy bonding layer 4 and a wear-resistant coating 5 from the inside to the outside. The yarn guide needle 1 and the shock-absorbing metal plate 22 are made of martensitic stainless steel. The alloy bonding layer 4 is a nickel-chromium alloy layer; the wear-resistant coating 5 is a titanium nitride coating. The alloy bonding layer 4 and the wear-resistant coating 5 are compositely formed by physical vapor deposition.
[0018] In this embodiment: Preparation of yarn guide needle 1 and shock-absorbing metal plate 22 Martensitic stainless steel is selected as the raw material, and the yarn guide needle 1 and the shock-absorbing metal plate 22 are integrally formed by precision stamping process to ensure that the two are firmly connected and vertically set. During the forming process, the shape structure of the yarn guide needle 1 is processed according to the design requirements of "the width of the needle shank 11 gradually increases from the middle section 12 and the width of the middle section 12 gradually decreases from the needle tip 13" to optimize the force distribution of the needle body.
[0019] After molding, the integral part consisting of the yarn guide needle 1 and the shock-absorbing metal plate 22 is heat-treated. The hardness and toughness of the martensitic stainless steel are improved through quenching and tempering processes to ensure that the yarn guide needle 1 has sufficient structural strength to withstand the external impact and vibration during high-speed weaving.
[0020] Composite coating preparation The surface of the heat-treated yarn guide needle 1 is pretreated by ultrasonic cleaning and plasma cleaning in sequence to remove oil, oxide layer and impurities from the surface of the yarn guide needle 1, so as to provide a clean substrate surface for coating adhesion.
[0021] A composite coating was prepared using physical vapor deposition (PVD): First, a nickel-chromium alloy bonding layer 4 was deposited on the substrate surface of the yarn guide needle 1. The good compatibility between the nickel-chromium alloy and the martensitic stainless steel and titanium nitride coating 5 enhanced the adhesion between the coating and the substrate of the yarn guide needle 1. Subsequently, a titanium nitride wear-resistant coating 5 was deposited on the outer side of the alloy bonding layer 4. The high hardness of titanium nitride improved the surface friction resistance of the yarn guide needle 1. During the deposition process, process parameters were strictly controlled to ensure that the alloy bonding layer 4 and the wear-resistant coating 5 uniformly covered the entire surface of the yarn guide needle 1 without cracking or peeling.
[0022] Preparation of shock-absorbing rubber strip 21 A rubber material (such as silicone rubber) with excellent elastic recovery and aging resistance is selected, and a shock-absorbing rubber strip 21 is formed by molding. During molding, an embedded groove matching the shock-absorbing metal plate 22 is reserved on the shock-absorbing rubber strip 21, while ensuring that the overall shape of the shock-absorbing rubber strip 21 is adapted to the gap between the top of the needle holder 3 and the top of the yarn guide needle 1, so that it can completely fill the space between the tops of adjacent yarn guide needles 1 during subsequent assembly.
[0023] Shock absorber assembly 2 The integrally formed yarn guide needle 1 and the shock-absorbing metal plate 22 are embedded into the inner groove of the shock-absorbing rubber strip 21, so that the shock-absorbing metal plate 22 is completely wrapped inside the shock-absorbing rubber strip 21, while ensuring that the shock-absorbing rubber strip 21 tightly fills the gap between the tops of every two yarn guide needles 1, forming a composite shock-absorbing structure of "shock-absorbing metal plate 22 support + shock-absorbing rubber strip 21 buffer", which realizes all-round buffering of the vibration of the yarn guide needle 1.
[0024] Assembled with needle holder 3 The assembled shock-absorbing component 2 and the yarn guide needle 1 are fixedly installed at the bottom of the needle holder 3 using bolts to ensure a secure connection and prevent loosening due to vibration during warp knitting machine operation. During assembly, it is necessary to ensure that the multiple yarn guide needles 1 are evenly arranged and that the needle tips 13 face the same direction to meet the accuracy requirements for yarn guidance.
[0025] All contents not described in detail in this specification are existing technologies known to those skilled in the art, and all electrical components mentioned herein are powered by external power supply lines.
[0026] Furthermore, all contents not described in detail in this specification are existing technologies known to those skilled in the art, and all electrical components mentioned in this document are powered by external power supply lines.
[0027] Working principle: When the warp knitting machine is running, the guide needle 1 reciprocates at high speed under the drive mechanism, guiding the yarn to complete the interlacing and knitting process. During this process: The damping rubber strip 21 in the damping assembly 2 directly absorbs the vibration energy generated by the movement of the guide needle 1, reducing the transmission of vibration to the needle holder 3 and other components; the damping metal plate 22 disperses the vibration stress of the guide needle 1 through its own rigidity, preventing the single guide needle 1 from being excessively deformed due to vibration, and at the same time preventing multiple guide needles 1 from interfering with each other's vibration, thus ensuring the positioning accuracy of the guide needle 1.
[0028] The composite coating on the surface of the yarn guide needle 1 plays a role: the nickel-chromium alloy bonding layer 4 ensures that the titanium nitride wear-resistant coating 5 is tightly bonded to the substrate of the yarn guide needle 1, preventing the coating from falling off; the titanium nitride wear-resistant coating 5 is in direct contact with the yarn, and resists yarn friction with its high hardness, reduces the wear of the yarn guide needle 1, and extends the service life of the yarn guide needle 1.
[0029] The gradient width structure of the yarn guide needle 1 makes the connection between the needle shank 11 and the shock absorption component 2 more stable. The middle section 12 provides sufficient rigid support, while the needle tip 13 reduces the yarn guiding resistance through a narrow design, thereby improving the overall structural stability and guiding smoothness of the yarn guide needle 1.
[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0031] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A vibration-resistant composite guiding warp knitting machine guide needle reinforced with an ultra-wear-resistant coating, comprising a needle holder (3), characterized in that: Multiple yarn guide needles (1) are uniformly fixedly installed at the bottom of the needle holder (3). A shock-absorbing component (2) is provided between the inner bottom of the needle holder (3) and the top of the yarn guide needles (1). The shock-absorbing component (2) includes a shock-absorbing rubber strip (21) and a shock-absorbing metal plate (22). The shock-absorbing rubber strip (21) is fixedly installed at the inner top of the needle holder (3). The shock-absorbing metal plate (22) is fixedly installed at the inner top of the needle holder (3) and embedded inside the shock-absorbing rubber strip (21). The shock-absorbing metal plate (22) is fixedly installed at the top of the multiple yarn guide needles (1). The shock-absorbing metal plate (22) and the yarn guide needles (1) are integrally formed. The shock-absorbing metal plate (22) and the yarn guide needles (1) are perpendicular to each other. The shock-absorbing rubber strip (21) fills the space between the tops of every two yarn guide needles (1).
2. The anti-vibration composite guiding warp knitting machine guide needle reinforced with an ultra-wear-resistant coating according to claim 1, characterized in that: The yarn guide needle (1) includes a needle handle (11), a middle section (12) and a needle tip (13). The needle handle (11) is located at the top of the yarn guide needle (1), the middle section (12) is located in the middle of the yarn guide needle (1), and the needle tip (13) is located at the bottom of the yarn guide needle (1).
3. The anti-vibration composite guiding warp knitting machine guide needle reinforced with an ultra-wear-resistant coating according to claim 2, characterized in that: The width of the guide needle (1) gradually increases from the shank (11) to the middle section (12), and the width of the middle section (12) to the needle tip (13) decreases sequentially.
4. The anti-vibration composite guiding warp knitting machine guide needle reinforced with an ultra-wear-resistant coating according to claim 3, characterized in that: The outer side of the yarn guide needle (1) is provided with an alloy bonding layer (4) and a wear-resistant coating (5) from the inside to the outside.
5. The anti-vibration composite guiding warp knitting machine guide needle reinforced with an ultra-wear-resistant coating according to claim 1, characterized in that: The yarn guide needle (1) and the shock-absorbing metal plate (22) are made of martensitic stainless steel.
6. The anti-vibration composite guiding warp knitting machine guide needle reinforced with an ultra-wear-resistant coating according to claim 4, characterized in that: The alloy bonding layer (4) is a nickel-chromium alloy layer; the wear-resistant coating (5) is a titanium nitride coating, and the alloy bonding layer (4) and the wear-resistant coating (5) are compositely formed by physical vapor deposition process.