Wind power yaw brake shoe anti-sticking mold

Abstract

The utility model discloses a kind of wind power yaw brake pad anti-sticking mould, it is related to mould technical field.The wind power yaw brake pad anti-sticking mould is with low surface roughness hot-pressing backing plate with anti-sticking coating, after hot-pressing, hot-pressing backing plate is contacted directly by upper die plate pressing down, pressure is evenly transmitted to powder by hot-pressing backing plate, and powder is compacted, direct hot-pressing contact of upper die plate and brake pad is avoided, wear of upper die plate is reduced, and the service life of mould is improved;Under the synergistic effect of the anti-sticking coating on the surface of hot backing plate and low surface roughness, sticking of brake pad and hot-pressing backing plate can be effectively prevented when demoulding, which helps to improve the qualified rate of brake pad;Meanwhile, the low roughness of hot-pressing backing plate can ensure the flatness of the back of brake pad, save the process of secondary polishing processing of brake pad;And maintenance and replacement of hot-pressing backing plate are simple and fast, which is conducive to improving the production efficiency of brake pad.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and more specifically, to a mold for preventing sticking of wind turbine yaw brake pads. Background Technology

[0002] In the operation system of wind power equipment, yaw brake pads are the core components that ensure the precise start-up and shutdown and stable operation of the wind turbine yaw system. Their production quality and efficiency are directly related to the overall performance and operation and maintenance costs of wind power equipment. Under the background of the large-scale development of the wind power industry, higher requirements are put forward for the stability and economy of the production process of yaw brake pads. Currently, in the mainstream production process of wind turbine yaw brake pads, hot pressing is a key process that determines the quality and mechanical properties of the brake pads. This process typically involves filling a mold cavity with uniformly mixed brake pad powder, applying pressure through the closing of the upper and lower mold plates, and heating to solidify the powder. However, existing hot pressing processes have significant technical defects in practical applications, severely restricting production efficiency and mold lifespan. Specifically, during the hot pressing process, the upper mold plate needs to directly contact and apply pressure to the brake pad powder in the mold cavity. On the one hand, since the brake pad powder often contains hard particles, under high pressure and high temperature conditions, the direct friction between the upper mold plate and the brake pad powder will cause the working surface of the upper mold plate to wear rapidly. This not only requires frequent repair or replacement of the worn upper mold plate, increasing mold maintenance costs and production downtime, but may also cause deviations in the brake pad forming thickness accuracy due to mold plate wear, affecting product consistency. On the other hand, the brake pad after hot pressing and curing tends to adhere tightly to the working surface of the upper mold plate. During demolding, a large external force or auxiliary demolding methods are required. This is not only cumbersome and time-consuming, but may also cause damage and cracking of the brake pad edges due to uneven demolding force, reducing the product qualification rate. At the same time, it further aggravates the wear of the upper mold plate, seriously hindering the large-scale and high-quality production of wind power yaw brake pads. Utility Model Content

[0003] To address the aforementioned technical problems in the existing technology, this utility model provides a wind turbine yaw brake pad anti-sticking mold. The wind turbine yaw brake pad anti-sticking mold uses a hot press pad to isolate the upper template from the direct contact between the upper template and the brake pad powder, which significantly reduces the wear on the upper template and prevents the brake pad from sticking to the upper template, thereby improving the service life of the mold, the processing accuracy of the brake pad, and the pass rate.

[0004] The specific technical solution of this utility model is as follows: This utility model provides a wind turbine yaw brake pad anti-sticking mold, including a mold body and a template. The template includes an upper template and a lower template arranged opposite to each other, forming a molding space between the upper template and the lower template. The mold body is located within the molding space. The mold body includes a mold cavity and a mold core that mates with the mold cavity. The mold cavity is located between the upper mold plate and the lower mold plate and is connected to the lower mold plate through an elastic component. The upper end of the mold core extends into the interior of the mold cavity, and the mold cavity can move up and down relative to the mold core. The lower end of the mold core is connected to the lower mold plate. The mold body also includes a hot press pad. When pressing the wind turbine yaw brake pad, the hot press pad is located between the upper template and the mold cavity to isolate the brake pad powder in the upper template and the mold cavity. The upper and lower surfaces of the hot press pad are coated with an anti-stick coating, and the surface roughness Ra of the hot press pad is ≤0.8μm.

[0005] In one possible implementation, the anti-stick coating is a nitride anti-stick coating or a polytetrafluoroethylene anti-stick coating.

[0006] Furthermore, the nitride in the nitride anti-stick coating is selected from at least one of AlN, CrN, TiAlN, Si3N4 and CrAlN.

[0007] In one possible implementation, the thickness of the anti-stick coating is 5-10 μm.

[0008] In one possible implementation, the thickness of the heat-pressing pad is 8-12 mm.

[0009] In one possible implementation, the upper surface of the mold core is provided with a plurality of raised strips.

[0010] Furthermore, the width of the protrusion is 5-10 mm, the depth is 3-8 mm, the inclination angle is 30°-60°, and the distance between two adjacent protrusions is 15-25 mm.

[0011] In one possible implementation, the mold core has a gradient hardness, with the surface hardness of the mold core being HRC60-62 and the matrix hardness of the mold core being HRC52-54.

[0012] In one possible implementation, the inner cavity of the mold cavity is rectangular, and the four edges of the inner cavity have chamfered structures, which are either oblique chamfered structures or arc chamfered structures.

[0013] In one possible implementation, the elastic component includes a spring, a connecting stud, and a support beam. The lower end of the connecting stud is fixed to the lower template, and the upper end of the connecting stud passes through the support beam and is fixed with a nut. The spring is sleeved on the connecting stud, and the upper and lower ends of the spring abut against the support beam and the lower template, respectively. The mold cavity is detachably connected to the support beam.

[0014] The positive and progressive effects of this utility model are as follows: This utility model provides a wind turbine yaw brake pad anti-sticking mold, which uses a low-surface-roughness hot press pad with an anti-stick coating. During hot pressing, the upper template presses down and directly contacts the hot press pad. The pressure is then evenly transferred to the powder through the hot press pad, compacting the powder and avoiding direct hot pressing contact between the upper template and the brake pad. This reduces wear on the upper template and improves the service life of the mold. The synergistic effect of the anti-stick coating and low surface roughness on the hot press pad effectively prevents the brake pad from sticking to the hot press pad during demolding, helping to improve the brake pad's pass rate. Simultaneously, the low roughness of the hot press pad ensures the flatness of the brake pad's back surface, saving the need for secondary grinding. Furthermore, the maintenance and replacement of the hot press pad are simple and quick, which helps improve the production efficiency of the brake pads. Attached Figure Description

[0015] Figure 1 This is a front view of the anti-sticking mold for wind turbine yaw brake pads.

[0016] Figure 2 for Figure 1 AA cross-section view.

[0017] Figure 3 This is a three-dimensional view of the mold core.

[0018] Figure 4 This is a top view of the mold core.

[0019] Figure 5 This is a top view of the mold cavity.

[0020] Figure Labels Mold body, 2-template, 11-hot press pad, 12-mold cavity, 13-elastic component, 14-mold core, 21-upper template, 22-lower template, 121-protrusion, 122-concave, 123-inner cavity, 131-spring, 132-connecting stud, 133-support beam, 134-nut, 141-protrusion. Detailed Implementation

[0021] First, those skilled in the art should understand that the following embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0022] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0023] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] The specific technical solution of this utility model is as follows: This utility model provides a wind turbine yaw brake pad anti-sticking mold, a mold body and a template. The template includes an upper template and a lower template arranged opposite to each other, forming a molding space between the upper template and the lower template. The mold body is located in the molding space. The mold body includes a mold cavity and a mold core that mates with the mold cavity. The mold cavity is located between the upper mold plate and the lower mold plate and is connected to the lower mold plate through an elastic component. The upper end of the mold core extends into the interior of the mold cavity, and the mold cavity can move up and down relative to the mold core. The lower end of the mold core is connected to the lower mold plate. The mold body also includes a hot press pad. When pressing the wind turbine yaw brake pad, the hot press pad is placed between the upper template and the mold cavity to isolate the brake pad powder in the upper template and the mold cavity. The upper and lower surfaces of the hot press pad are coated with an anti-stick coating, and the surface roughness Ra of the hot press pad is ≤0.8μm.

[0025] The wind turbine yaw brake pad anti-sticking mold provided by this utility model directly blocks the contact between the upper template and the brake pad powder by setting a hot pressure pad between the upper template and the mold cavity. The adhesion and friction of powder under high temperature and pressure are the main causes of wear on the upper mold plate. The hot press pad, through physical isolation, ensures that the upper mold plate only contacts the hot press pad, avoiding direct erosion of the upper mold plate surface by the powder. This protects the upper mold plate and also improves the service life of the mold. In the functional design of the hot press pad, the surface anti-stick coating and low roughness (Ra≤0.8μm) form a highly efficient synergy: On the one hand, the anti-stick coating, with its low surface energy characteristics, combined with the physical barrier of the smooth surface against powder adhesion, can effectively avoid the adhesion problem between the brake pad and the hot press pad during the demolding process. This reduces defects such as missing corners and surface tears caused by adhesion, significantly improving the product qualification rate. On the other hand, the low surface roughness of the hot press pad acts directly on the back of the brake pad, ensuring that the flatness of the back of the brake pad after molding meets the finished product requirements. This eliminates the need for secondary grinding of the back of the brake pad in traditional processes, shortening the processing flow. Furthermore, when the surface of the hot press pad is worn or the coating fails, there is no need to disassemble the mold body. The coating can be replaced or re-sprayed to restore its use. The maintenance operation is simple and quick, effectively reducing mold downtime and ensuring the efficiency improvement of brake pad mass production.

[0026] In one possible implementation, the anti-stick coating is a nitride anti-stick coating or a polytetrafluoroethylene (PTFE) anti-stick coating. Both nitride and PTFE anti-stick coatings have low surface energy, which can significantly reduce powder adhesion during hot pressing, ensuring smooth demolding after hot pressing and preventing defects such as missing corners and cracks caused by forced peeling of the brake pads. The nitride coating also has high hardness, which can withstand the friction and wear of hard particles (such as carbon fiber and metal powder) in the powder during hot pressing, extending the service life of the hot pressing pad; the PTFE coating has excellent chemical inertness and does not react with the resin and fillers in the brake pad powder, preventing coating components from migrating and contaminating the product, making it suitable for the production of wind turbine brake pads with high purity requirements.

[0027] Furthermore, the nitride in the nitride anti-stick coating is selected from at least one of AlN, CrN, TiAlN, Si3N4, and CrAlN. Each of the five nitrides has its own performance focus, adaptable to different production scenarios: Si3N4 has the lowest surface energy, suitable for scenarios with extremely high anti-stick requirements; TiAlN and CrN have high hardness, are wear-resistant and impact-resistant, and can withstand the friction of hard particles in the powder, extending the life of the pad; AlN has no metal ion migration, suitable for the requirement of high purity of the brake pad, avoiding coating contamination of the powder; TiAlN and CrAlN are high-temperature resistant, suitable for requirements with higher hot-pressing temperatures.

[0028] In one possible implementation, the thickness of the anti-stick coating is 5-10 μm. A thickness of 5-10 μm ensures that the anti-stick coating forms a complete and continuous cover, while avoiding the problems of increased coating brittleness and easy peeling caused by excessive thickness.

[0029] In one possible implementation, the thickness of the hot press pad is 8-12 mm. The hot press pad needs to withstand the cyclic action of high temperature, high pressure and demolding friction for a long time. The thickness of 8-12 mm can provide sufficient structural support and can evenly transmit the pressure of the upper mold plate to the entire mold cavity, ensuring that the compaction degree of each part of the brake pad is consistent.

[0030] In one possible implementation, the upper surface of the mold core is provided with several raised strips. Traditional brake pad manufacturing processes require first hot-pressing powder into a semi-finished product, and then using milling equipment for secondary processing to form grooves on the brake pad surface. During this secondary machining process, the dense surface layer formed by hot pressing is removed, leading to a decrease in wear resistance and friction coefficient, directly affecting the stability of braking performance. By providing several raised strips on the surface of the mold core, the powder can be directly molded into a brake pad with grooves during hot pressing, eliminating the need for subsequent processing. This not only shortens the production cycle of the brake pad and saves on the investment and energy consumption of milling equipment, but also avoids the problem of traditional milling cutting away the dense surface layer of the brake pad, disrupting the fiber orientation distribution, and causing a decrease in wear resistance around the groove.

[0031] Furthermore, the width of the convex strip is 5-10 mm, the depth is 3-8 mm, the inclination angle is 30°-60°, and the spacing between two adjacent convex strips is 15-25 mm. When the groove width is 5-10 mm, the depth is 3-8 mm, and the inclination angle is 30°-60°, combined with the 15-25 mm spacing, it can ensure that the effective friction area ratio of the brake pad is maintained at 70%-80%, providing sufficient friction force. At the same time, the groove can quickly dissipate the heat and wear generated during braking.

[0032] In one possible implementation, the mold core has a gradient hardness, with a surface hardness of HRC60-62 and a matrix hardness of HRC52-54. HRC60-62 indicates that the material's hardness value is between 60 and 62 when tested using the Rockwell hardness C scale, and HRC52-54 indicates that the material's hardness value is between 52 and 54 when tested using the Rockwell hardness C scale. The mold core surface needs to withstand the frictional wear and pressure impact of the powder during hot pressing for extended periods. A high surface hardness of HRC60-62 significantly improves the mold core's wear resistance. During hot pressing, the mold core undergoes repeated hot and cold cycles between high and room temperature. If the entire mold core uses a high hardness of HRC60-62, the matrix brittleness will increase significantly, making it prone to cracking due to thermal stress. A moderate matrix hardness of HRC52-54 effectively absorbs the internal stress generated by the thermal cycles, reducing the cracking rate of the mold core and ensuring the overall structural stability of the mold core.

[0033] In one possible implementation, the inner cavity of the mold cavity is rectangular, and the four edges of the inner cavity have chamfered structures, which can be beveled chamfers or rounded chamfers. Wind turbine yaw brake pads must withstand alternating braking loads during operation. If the edges of the brake pads are sharp right angles, stress concentration is likely to occur at these angles, which can lead to microcracks and eventual fracture over long-term use. The chamfered structure of the mold cavity edges directly forms the brake pad chamfer, creating a smooth transition and reducing stress concentration. It also avoids the microcracks that can develop inside the brake pad material due to cutting vibration during subsequent secondary machining and chamfering. These microcracks may propagate into fatigue fracture sources, affecting the strength of the brake pad and reducing its service life. The beveled chamfer has a clear edge transition, which can precisely control the fit clearance between the brake pad and the brake disc, making it especially suitable for scenarios where the braking system space is compact and the assembly precision requirements are high; the rounded chamfer has no obvious sharp edges, which can disperse the stress during braking to the greatest extent, making it especially suitable for large wind turbine units with large braking load fluctuations and high-frequency braking.

[0034] In one possible implementation, the elastic component includes a spring, a connecting stud, and a support beam. The lower end of the connecting stud is fixed to the lower template, and the upper end of the connecting stud passes through the support beam and is secured with a nut. The spring is sleeved on the connecting stud, with its upper and lower ends abutting against the support beam and the lower template, respectively. The mold cavity is detachably connected to the support beam. This elastic component, consisting of a spring, a connecting stud, and a support beam, with the spring sleeved on the connecting stud and the support beam forming an elastic buffer structure with the lower base, absorbs instantaneous impact forces during the stamping process. This effectively disperses the impact forces during hot pressing, reducing localized stress concentration caused by rigid contact in the mold, thereby improving the forming accuracy and surface quality of the wind turbine yaw brake pads.

[0035] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0036] This embodiment provides a wind turbine yaw brake pad anti-sticking mold, such as Figure 1 and Figure 2 As shown, the mold includes a mold body 1 and a template 2. The template 2 includes an upper template 21 and a lower template 22 arranged opposite to each other, forming a molding space between the upper template 21 and the lower template 22. The mold body 1 is located in the molding space. Both the upper template 21 and the lower template 22 are made of H13 hot work die steel, and the hardness of the upper template 21 and the lower template 22 is HRC42-45 after forging and quenching and tempering.

[0037] like Figures 1-5As shown, the mold body 1 includes a hot press pad 11, a mold cavity 12, an elastic component 13, and a mold core 14 that matches the mold cavity. When pressing the wind turbine yaw brake pad, the hot press pad 11 is located between the mold cavity 12 and the upper template 21. In this embodiment, the hot press pad 11 is a movable plate. During hot pressing, the hot press pad 11 is placed on the mold cavity 12, and it can be directly removed from the mold cavity 12 after hot pressing. In other embodiments, the hot press pad 11 can also be detachably connected to the upper template 21 by bolts and nuts. The hot press pad 11 is made of 4Cr5MoSiV1 hot work die steel. The thickness of the hot press pad 11 is 10 mm. The upper and lower surfaces of the hot press pad 11 are polished to a surface roughness Ra≤0.8 μm, and then a CrN anti-stick coating with a thickness of 8 μm is deposited on the surface. The coating hardness is HV1000-1200, achieving both anti-stick and wear-resistant effects. The cavity 12 is made of P20 pre-hardened plastic mold steel with a hardness of HRC30-35. The inner cavity 123 of the cavity 12 is rectangular, and the four edges of the inner cavity 123 are all rounded chamfered. The cavity 12 is connected to the lower template 22 through two sets of elastic components 13. Each set of elastic components 13 has four springs 131, four connecting studs 132, and a support beam 133. The support beam 133 has four through holes. The lower ends of the four connecting studs 132 are fixed to the lower template 22, and the upper ends of the four connecting studs 132 pass through the through holes. Nuts 134 are provided on the upper ends of the four connecting studs 132. The springs 131 are sleeved on the connecting studs 132, and the upper and lower ends of the springs 131 are respectively connected to the support beam. The support beam 133 abuts against the lower template 22. The spring 131 and nut 134 define the position of the support beam 133. The mold cavity 12 is detachably connected to the support beam 133. The front and rear ends of the mold cavity 12 connected to the support beam 133 have a serrated structure formed by alternating protrusions 121 and recesses 122. The serrated structure can better match the surface structure of the support 133, making it easy to disassemble and install the mold cavity 12. When the mold cavity 12 is installed on the support beam 133, the protrusions 121 are inserted between adjacent nuts 134 on the upper surface of the support beam 133. At the same time, the nuts 134 are also in the space of the recesses 122 of the mold cavity 12. The mold cavity 12 can be quickly fixed to the support beam 133 by using easy-to-remove bolts that pass through the protrusions 121. The mold core 14 is made of W18Cr4V high-speed steel. The surface and substrate are hardened by surface induction hardening and low temperature tempering. The surface hardness of the mold core 14 is HRC61 and the substrate hardness is HRC53. The upper surface of the mold core 14 is provided with three protrusions 141. The width of the protrusions 141 is 8 mm, the depth is 5 mm, the inclination angle is 45°, and the spacing between adjacent protrusions 141 is 20 mm. The mold core 14 and the inner cavity 123 of the mold cavity 12 are both cuboid in shape, which is suitable for pressing rectangular wind turbine yaw brake pads. The upper end of the mold core 14 extends into the inner cavity 123 of the mold cavity 12.

[0038] The process of hot pressing brake pads using the anti-stick mold provided in this embodiment is as follows: First, the brake pad powder is evenly filled into the mold cavity 12. Then, the hot pressing pad 11 is placed on the upper surface of the mold cavity 12. Then, the upper template 21 is moved downward by the hydraulic press. After the upper template 21 contacts the hot pressing pad 11, the pressure is transferred to the brake pad powder through the hot pressing pad 11. After the set pressing pressure is reached, the pressure is held. After the pressure holding is completed, the hydraulic press moves the upper template 21 upward, and the hot pressing pad 11 is removed. After demolding, the wind turbine yaw brake pad is obtained.

[0039] The brake pads formed using the anti-stick mold provided in this embodiment reduce the wear of the upper mold plate from 0.2 mm / 100 pieces to 0.05 mm / 100 pieces. The hot press pad only needs to be replaced after wear, and its cost is only about 1 / 5 of the upper mold plate, significantly reducing the processing cost of the brake pads. The production cycle of the wind turbine yaw brake pads is shortened, production efficiency is improved, and the material loss rate of the brake pads is reduced from 8% to 0.8%.

[0040] It should be noted that in the description of this application, the terms "inner" and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. All directional indications (such as up, down, left, right, front, back, inner, and outer) are only used to explain the relative positional relationships and movement between components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0041] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A mold for preventing sticking of yaw brake pads in wind turbines, characterized in that, include: The mold body (1) and the template (2) are provided. The template (2) includes an upper template (21) and a lower template (22) arranged opposite to each other. A molding space is formed between the upper template (21) and the lower template (22). The mold body (1) is located in the molding space. The mold body (1) includes a mold cavity (12) and a mold core (14) that cooperates with the mold cavity (12). The mold cavity (12) is located between the upper template (21) and the lower template (22) and is connected to the lower template (22) through an elastic component (13). The upper end of the mold core (14) extends into the interior of the mold cavity (12). The mold cavity (12) can move up and down relative to the mold core (14). The lower end of the mold core (14) is connected to the lower template (22). The mold body (1) also includes a hot press pad (11). When pressing the wind turbine yaw brake pad, the hot press pad (11) is located between the upper template (21) and the mold cavity (12) to isolate the brake pad powder in the upper template (21) and the mold cavity (12). The upper and lower surfaces of the hot press pad (11) are coated with an anti-stick coating, and the surface roughness Ra of the hot press pad (11) is ≤0.8μm.

2. The anti-sticking mold for wind turbine yaw brake pads according to claim 1, characterized in that, The anti-stick coating is a nitride anti-stick coating or a polytetrafluoroethylene anti-stick coating.

3. The anti-sticking mold for wind turbine yaw brake pads according to claim 2, characterized in that, The nitride in the nitride anti-stick coating is selected from at least one of AlN, CrN, TiAlN, Si3N4 and CrAlN.

4. The anti-sticking mold for wind turbine yaw brake pads according to claim 1, characterized in that, The thickness of the anti-stick coating is 5-10 μm.

5. The anti-sticking mold for wind turbine yaw brake pads according to claim 1, characterized in that, The thickness of the hot press pad (11) is 8-12 mm.

6. The anti-sticking mold for wind turbine yaw brake pads according to claim 1, characterized in that, The upper surface of the mold core (14) is provided with several protrusions (141).

7. The anti-sticking mold for wind turbine yaw brake pads according to claim 6, characterized in that, The width of the protrusion (141) is 5-10 mm, the depth is 3-8 mm, the inclination angle is 30°-60°, and the distance between two adjacent protrusions (141) is 15-25 mm.

8. The anti-sticking mold for wind turbine yaw brake pads according to claim 1, characterized in that, The mold core (14) has a gradient hardness, the surface hardness of the mold core (14) is HRC60-62, and the matrix hardness of the mold core (14) is HRC52-54.

9. The anti-sticking mold for wind turbine yaw brake pads according to claim 1, characterized in that, The inner cavity (123) of the mold cavity (12) is in the shape of a cuboid, and the four edges of the inner cavity (123) have a chamfer structure, which is an oblique chamfer structure or a rounded chamfer structure.

10. The anti-sticking mold for wind turbine yaw brake pads according to claim 1, characterized in that, The elastic component (13) includes a spring (131), a connecting stud (132), and a support beam (133). The lower end of the connecting stud (132) is fixed on the lower template (22), and the upper end of the connecting stud (132) passes through the support beam (133) and is fixed with a nut. The spring (131) is sleeved on the connecting stud (132), and the upper and lower ends of the spring (131) abut against the support beam (133) and the lower template (22) respectively. The mold cavity (12) is detachably connected to the support beam (133).

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