Automobile anti-friction gasket and processing equipment for the anti-friction gasket

Abstract

The present invention discloses a kind of automobile anti-friction gasket and processing equipment for the anti-friction gasket, relates to the technical field of anti-friction gasket, and aims to solve the technical problem of wear resistance. The key points of its technical scheme are: including a gasket body and a wear-resistant layer arranged on the surface of the gasket body, and each material and proportion in the wear-resistant layer are specifically: 45-75 parts of polybutylene adipamide (PA46), 15-25 parts of potassium fluoride (KF), 5-15 parts of carbon fiber (CF), and 5-15 parts of polytetrafluoroethylene (PTFE). The gasket body includes a substrate, and the substrate has a center hole for sleeve-connecting axles, and its two side surfaces are respectively abutted against wheel hub bearings and universal joints, and the substrate is provided with a plurality of claws along its circumference, and the claws are arranged at equal angles with the outer circumferential surface of the substrate, and a plurality of the claws are used to clamp and connect universal joints. The object of the present invention is to provide an automobile anti-friction gasket and processing equipment for the anti-friction gasket.

Description

Technical Field

[0001] The invention relates to the technical field of anti-friction pads, and more specifically, to an automobile anti-friction pad and processing equipment for the anti-friction pad. Background Art

[0002] The end face of the universal joint at the fixed end of the car's drive shaft is in contact with the end face of the wheel hub bearing. The contact surface formed by the two often has serious friction and noise, which not only affects the user's comfort and judgment, but also reduces the service life of the car. Therefore, it is necessary to reduce or avoid the occurrence of friction and noise.

[0003] Existing anti-friction pads are usually made of stainless steel, and their wear resistance cannot meet the requirements. After working for a long time, their surfaces will be worn, thus affecting their normal friction reduction effect.

[0004] In the prior art, a wear-resistant layer is added to the surface of the gasket to improve its wear resistance. The wear-resistant layer coated on the surface of the gasket by spraying and brushing is relatively thin, and its wear resistance is still difficult to meet the requirements. In the prior art, the wear-resistant layer is also processed by injection molding, but its production and processing process is relatively complicated and the production cost is relatively high.

[0005] Therefore, a new technical solution is urgently needed to solve the above technical problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the object of the present invention is to provide an automobile anti-friction gasket and a processing device for the anti-friction gasket.

[0007] The above technical purpose of the present invention is achieved through the following technical solutions: an automobile anti-friction gasket, comprising a gasket body and a wear-resistant layer arranged on the surface of the gasket body, wherein the materials and proportions in the wear-resistant layer are specifically: 45-75 parts of polybutylene adipamide (PA46), 15-25 parts of potassium fluoride (KF), 5-15 parts of carbon fiber (CF), and 5-15 parts of polytetrafluoroethylene (PTFE); the gasket body comprises a substrate, the substrate has a center hole for sleeved axles, and its two side surfaces are respectively abutted against wheel hub bearings and universal joints; the substrate is provided with a plurality of claws along its circumference, the claws are arranged at equal angles to the outer circumferential surface of the substrate, and a plurality of the claws are used to clamp and connect the universal joints.

[0008] The present invention is further configured as follows: the gasket body includes a base plate, the base plate has a central hole for sleeved axle, and its two side surfaces are respectively abutted against the wheel hub bearing and the universal joint, and the base plate is provided with four claws along its circumference, and the claws are arranged at equal angles with the outer circumference of the base plate, and the four claws are used to clamp and connect the universal joint. The wear-resistant layer is located on the inner wall surface of the claw and is provided with a plurality of vertically arranged anti-slip strips to increase the friction between it and the universal joint, so as to improve the stability of the connection with the universal joint.

[0009] The present invention is further configured such that: a plurality of annular grooves are provided on both the upper surface and the lower surface of the substrate.

[0010] The present invention is further configured as follows: the inner wall surface of the wear-resistant layer located on the claw is provided with a plurality of vertically arranged anti-slip strips.

[0011] The present invention is further configured as follows: the substrate is provided with a plurality of plug-in grooves for the clamping claws to be inserted along its circumferential side walls, the inner walls on both sides of the plug-in grooves are provided with limiting grooves that penetrate through the top ends thereof, the clamping claws include a plug-in portion inserted into the plug-in groove, limiting blocks are provided on both sides of the plug-in portion and are inserted into the limiting grooves, and a clamping portion is provided on the top of the plug-in portion.

[0012] A processing device for the above-mentioned anti-friction gasket includes a vertically arranged support, a fixed mold is fixedly connected to one side surface of the support, a die-casting cavity is provided on the lower surface of the fixed mold, and its diameter is larger than the diameter of the substrate, a connecting column for the center hole to be sleeved is provided in the die-casting cavity, and a movable mold covering the top of the die-casting cavity is also provided below the support, the connecting column is provided with a feed trough running through the top thereof, and a discharge trough connected to the feed trough and the die-casting cavity is also provided on its circumferential side wall.

[0013] The present invention is further configured as follows: the movable mold includes a pressure ring arranged in an annular shape, the diameter of the pressure ring is equal to the diameter of the die-casting cavity, and the inner diameter thereof is equal to the diameter of the connecting column. The circumferential side wall of the pressure ring is provided with a through groove for the claws to pass through, and a sealing cover is provided on the lower surface of the pressure ring along the circumferential side of the through groove and is sleeved on the claws. The movable mold is placed in the die-casting cavity, and forms a closed space coated with the friction-reducing gasket (except the bottom) with the fixed mold, and a wear-resistant layer is formed on the surface of the friction-reducing gasket (except the bottom) after the injection molding raw material is injected through the feed trough.

[0014] The present invention is further configured as follows: a connecting plate is provided on one side of the support below the fixed mold, a plurality of lower sliding rods are passed through and slidably connected to the connecting plate, the top end of the lower sliding rod is fixedly connected to the lower surface of the pressure ring, and the bottom end thereof is fixedly connected to a lower push plate, and a lower cylinder for driving the lower push plate is provided at the bottom of the support.

[0015] The present invention is further configured as follows: a connecting ring corresponding to the internal shape of the die-casting cavity is arranged in the die-casting cavity, a plurality of vertically arranged upper sliding rods are fixedly connected to the upper surface of the connecting ring, the upper sliding rods pass through the top of the fixed mold, an upper push plate is fixedly connected to the top of the upper sliding rod, and an upper cylinder for driving the upper push plate is arranged on the top of the support.

[0016] The present invention is further configured as follows: the discharge chute includes a lower discharge chute and an upper discharge chute located above the lower discharge chute; when the upper surface of the substrate is attached to the inner wall of the top of the die-casting cavity, the lower discharge chute is connected to the cavity formed by the side wall of the die-casting cavity, the movable mold and the lower surface of the substrate, and the upper discharge chute is located on one side of the substrate and is in a sealed state; when the position of the substrate is lowered and located on one side of the lower discharge chute, the lower discharge chute is in a sealed state, and the upper discharge chute is connected to the cavity formed by the top of the substrate and the die-casting cavity.

[0017] The present invention is further configured as follows: the inner surface of the sealing cover is provided with a plurality of vertically arranged grooves.

[0018] The present invention has the following beneficial effects:

[0019] 1. The wear-resistant layer formed on the surface of the gasket body through the injection molding process effectively improves the wear resistance of the anti-friction gasket and greatly increases its service life.

[0020] 2. Before the injection molding work, the base plate and the claws are produced and processed separately, and then the two are assembled before injection molding, thereby reducing the production difficulty of the gasket body and reducing the production cost.

[0021] 3. Through two injection molding, the surface of the gasket body can be easily and quickly injection molded, which reduces the complexity of production and processing and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the anti-friction gasket and the gasket body in the specific embodiment 1;

[0023] Figure 2 It is a schematic diagram of the exploded structure of the gasket body in the specific embodiment 1;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the second specific embodiment;

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of the fixed mold in the second specific embodiment;

[0026] Figure 5 It is a schematic diagram of the structure of the movable mold in the second specific embodiment.

[0027] Description of the drawings: 1. Gasket body; 101. Base plate; 102. Claw; 1021. Plug-in part; 1022. Limit block; 1023. Clamping part; 2. Wear-resistant layer; 3. Center hole; 4. Anti-slip strip; 5. Annular groove; 6. Plug-in groove; 7. Limit groove; 8. Support; 9. Fixed mold; 10. Die-casting cavity; 11. Connecting column; 12. Moving mold; 121. Pressing ring; 13. Feed trough; 14. Discharge trough; 141. Lower discharge trough; 142. Upper discharge trough; 15. Through groove; 16. Sealing cover; 17. Connecting plate; 18. Lower sliding rod; 19. Lower push plate; 20. Lower cylinder; 21. Connecting ring; 22. Upper sliding rod; 23. Upper push plate; 24. Upper cylinder; 25. Groove. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0029] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. Specific embodiment one:

[0031] As shown in the figure, an automobile anti-friction gasket includes a gasket body 1 and a wear-resistant layer 2 arranged on the surface of the gasket body 1. The materials and proportions in the wear-resistant layer 2 are specifically: 50 parts of polybutylene adipamide (PA46), 20 parts of potassium fluoride (KF), 20 parts of carbon fiber (CF), and 10 parts of polytetrafluoroethylene (PTFE). By mixing and stirring the above materials and forming the wear-resistant layer 2 on the surface of the gasket body 1 through an injection molding process, the wear resistance of the anti-friction gasket is effectively improved, and its service life is greatly improved.

[0032] The gasket body 1 includes a base plate 101, which has a central hole 3 for sleeved axles, and its two side surfaces are respectively in contact with the wheel hub bearing and the universal joint. The base plate 101 is provided with four claws 102 along its circumference, and the claws 102 are arranged at equal angles to the outer circumference of the base plate 101, and the four claws 102 are used to clamp and connect the universal joint. The wear-resistant layer 2 is located on the inner wall surface of the claws 102 and is provided with a plurality of vertically arranged anti-slip strips 4 to increase the friction between it and the universal joint, so as to improve the stability of the connection with the universal joint.

[0033] Two annular grooves 5 are provided on the upper and lower surfaces of the substrate 101. By providing the annular grooves 5, the contact area between the substrate 101 and the wear-resistant layer 2 can be increased, so as to improve the stability of the connection between the substrate 101 and the wear-resistant layer 2 after injection molding, so as to prevent the wear-resistant layer 2 from falling off during use.

[0034] The base plate 101 is provided with a plurality of insertion slots 6 for the clamping claws 102 to be inserted along its circumferential side wall, and the inner walls on both sides of the insertion slots 6 are provided with limiting slots 7 penetrating the top thereof, and the clamping claw 102 includes an insertion portion 1021 inserted in the insertion slots 6, and limiting blocks 1022 inserted in the limiting slots 7 are provided on both sides of the insertion portion 1021, and a clamping portion 1023 is provided on the top of the insertion portion 1021. Before the injection molding work is performed, the base plate 101 and the clamping claw 102 are produced and processed separately, and then the two are assembled before injection molding, thereby reducing the production difficulty of the gasket body 1 and reducing the production cost. Specific embodiment 2:

[0036] A processing device for the above-mentioned anti-friction gasket includes a vertically arranged support 8, a fixed mold 9 is fixedly connected to one side surface of the support 8, a die-casting cavity 10 is provided on the lower surface of the fixed mold 9, and its diameter is larger than the diameter of the substrate 101. A connecting column 11 for the center hole to be sleeved is provided in the die-casting cavity 10, and a movable mold 12 covering the bottom of the die-casting cavity 10 is also provided below the support 8. The connecting column 11 is provided with a feed groove 13 passing through the top thereof, and its circumferential side wall is also provided with a discharge groove 1414 connected to the feed groove 13 and the die-casting cavity 10.

[0037] During processing, after the claws 102 are connected to the substrate 101, they are placed in the die-casting cavity 10, and the movable mold 12 is directed toward the die-casting cavity 10 and covers the bottom of the gasket body 1, so that the die-casting cavity 10 is located on the peripheral surface of the gasket body 1 to form a sealed space, and the injection molding raw material is injected through the feed groove 13, and the injection molding raw material enters the sealed space through the feed groove 13, thereby forming a wear-resistant layer 2 on the surface of the gasket body 1.

[0038] The movable mold 12 includes a ring-shaped pressure ring 121, the diameter of which is equal to the diameter of the die-casting cavity 10, and the inner diameter of which is equal to the diameter of the connecting column 11. The circumferential side wall of the pressure ring 121 is provided with a through groove 15 for the claw 102 to pass through. A sealing cover 16 is provided on the lower surface of the pressure ring 121 along the circumferential side of the through groove 15 and is sleeved on the claw 102. The sealing cover 16 forms a wear-resistant layer 2 covering the surface of the claw 102.

[0039] A connecting plate 17 is provided on one side of the support 8 below the fixed mold 9, and a plurality of lower sliding rods 18 are passed through and slidably connected to the connecting plate 17. The top of the lower sliding rod 18 is fixedly connected to the lower surface of the pressure ring 121, and the bottom of the lower sliding rod 18 is fixedly connected to the lower push plate 19. A lower cylinder 20 for driving the lower push plate 19 is provided at the bottom of the support 8. Before injection molding, the gasket body 1 is placed on the surface of the movable mold 12, so that the claw 102 is placed in the sealing cover 16, and the movable mold 12 is pushed by the lower cylinder 20 to be placed in the die-casting cavity 10, so that the gasket body 1 is located between the movable mold 12 and the fixed mold 9, and the movable mold 12 and the fixed mold 9 form a closed space covering the surface of the wear-reducing gasket (except the bottom), and the wear-resistant layer 2 covering the surface of the gasket body 1 (except the bottom) is formed after the injection molding raw material is injected through the feed trough 13.

[0040] A connecting ring 21 corresponding to the internal shape of the die-casting cavity 10 is provided in the die-casting cavity 10, and a plurality of vertically arranged upper sliding rods 22 are fixedly connected to the upper surface of the connecting ring 21. The upper sliding rods 22 pass through the top of the fixed mold 9, and an upper push plate 23 is fixedly connected to the top of the upper sliding rods 22. An upper cylinder 24 for driving the upper push plate 23 is provided on the top of the support 8.

[0041] The discharge chute 14 includes a lower discharge chute 141 and a lower discharge chute 142 located above the lower discharge chute 141. When the upper surface of the substrate 101 is attached to the inner wall of the top of the die-casting cavity 10, the lower discharge chute 141 is connected to the cavity formed by the side wall of the die-casting cavity 10, the movable mold 12 and the lower surface of the substrate 101, and the lower discharge chute 142 is located on one side of the substrate and is in a sealed state; when the position of the substrate 101 is lowered and located on one side of the lower discharge chute 141, the lower discharge chute 141 is in a sealed state, and the lower discharge chute 142 is connected to the cavity formed by the top of the substrate 101 and the die-casting cavity 10.

[0042] The gasket body 1 is placed on the surface of the movable mold 12, and the movable mold 12 is pushed upward by the lower cylinder 20, so that the upper surface of the substrate 101 is attached to the lower surface of the connecting ring 21, and the injection molding raw material is introduced and discharged from the lower feed slot 13, and the first injection molding is performed to perform injection molding on the surface of the gasket body 1 (except the upper surface). After cooling and molding, the lower cylinder 20 and the upper cylinder 24 push and work simultaneously to control the movable mold 12, the gasket body 1 and the connecting ring 21 to descend a certain distance, and the upper cylinder 24 drives the connecting ring 21 to reset, and the injection molding raw material is introduced and discharged from the lower discharge slot 142 to perform the second injection molding, so as to perform injection molding on the lower surface of the substrate 101, and cool and mold, so as to completely perform injection molding on the surface of the gasket body 1, and form a wear-resistant layer 2 that completely covers the surface of the gasket body 1.

[0043] The inner surface of the sealing cover is provided with a plurality of vertical grooves 25 to form anti-slip strips 4 .

[0044] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A processing device for an automobile anti-friction gasket, the anti-friction gasket comprising a gasket body (1) and a wear-resistant layer (2) arranged on the surface of the gasket body (1), characterized in that: The materials and proportions in the wear-resistant layer (2) are specifically: 45-75 parts of polybutylene adipamide (PA46), 15-25 parts of potassium fluoride (KF), 5-15 parts of carbon fiber (CF), and 5-15 parts of polytetrafluoroethylene (PTFE). The gasket body (1) comprises a substrate (101), the substrate (101) having a central hole (3), and the substrate (101) is provided with a plurality of claws (102) along its circumference, the claws (102) being arranged at equal angles on the outer circumferential surface of the substrate (101); The base plate (101) is provided with a plurality of plug-in slots (6) along its circumferential side wall for the clamping claw (102) to be inserted, and the inner walls on both sides of the plug-in slot (6) are provided with limiting slots (7) penetrating the top thereof, and the clamping claw (102) comprises a plug-in portion (1021) inserted into the plug-in slot (6), limiting blocks (1022) inserted into the limiting slots (7) are provided on both sides of the plug-in portion (1021), and a clamping portion (1023) is provided on the top of the plug-in portion (1021); The processing equipment comprises a vertically arranged support (8), a fixed die (9) is fixedly connected to one side surface of the support (8), a die-casting cavity (10) is provided on the lower surface of the fixed die (9), the diameter of which is larger than the diameter of the substrate (101), a connecting column (11) for the central hole (3) to be sleeved is provided in the die-casting cavity (10), a movable die (12) is also provided below the support (8) and covers the top of the die-casting cavity (10), the connecting column (11) is provided with a feed trough (13) penetrating the top thereof, and a discharge trough (14) is also provided on the circumferential side wall thereof and connected to the feed trough (13) and the die-casting cavity (10); The movable mold (12) comprises a ring-shaped pressing ring (121), the diameter of which is equal to the diameter of the die-casting cavity (10), and the inner diameter of which is equal to the diameter of the connecting column (11). The circumferential side wall of the pressing ring (121) is provided with a through groove (15) for the clamping claw (102) to penetrate, and the lower surface of the pressing ring (121) is provided with a sealing cover (16) sleeved on the clamping claw (102) along the circumferential side of the through groove (15). The movable mold (12) is placed in the die-casting cavity (10) and forms a closed space covering the anti-friction gasket except the bottom with the fixed mold (9), and forms a wear-resistant layer (2) covering the outer surface of the anti-friction gasket except the bottom after the injection molding raw material is injected through the feed slot (13).

2. The processing equipment of the automobile anti-friction gasket according to claim 1 is characterized in that: A plurality of annular grooves (5) are provided on the upper surface and the lower surface of the base plate (101).

3. The processing equipment for anti-friction gaskets of automobiles according to claim 1, characterized in that: The wear-resistant layer (2) is provided with a plurality of vertically arranged anti-slip strips (4) on the inner wall surface of the clamping claw (102).

4. The processing equipment of the automobile anti-friction gasket according to claim 1 is characterized in that: A connecting plate (17) is provided on one side of the support (8) below the fixed mold (9), and a plurality of lower sliding rods (18) are passed through and slidably connected to the connecting plate (17). The top ends of the lower sliding rods (18) are fixedly connected to the lower surface of the pressure ring (121), and the bottom ends thereof are fixedly connected to a lower push plate (19). A lower cylinder (20) for driving the lower push plate (19) is provided at the bottom of the support (8).

5. The processing equipment of the automobile anti-friction gasket according to claim 4 is characterized in that: The die-casting cavity (10) is provided with a connecting ring (21) corresponding to the internal shape thereof, and the upper surface of the connecting ring (21) is fixedly connected to a plurality of vertically arranged upper sliding rods (22), the upper sliding rods (22) pass through the top of the fixed mold (9), and the top of the upper sliding rods (22) is fixedly connected to an upper push plate (23), and the top of the support (8) is provided with an upper cylinder (24) for driving the upper push plate (23).

6. The processing equipment for automobile anti-friction pads according to claim 5, characterized in that: The discharge chute (14) comprises a lower discharge chute (141) and an upper discharge chute (142) located above the lower discharge chute (141); when the upper surface of the substrate (101) is attached to the inner wall of the top of the die-casting cavity (10), the lower discharge chute (141) is connected to the cavity formed by the side wall of the die-casting cavity (10), the movable mold (12) and the lower surface of the substrate (101); and the upper discharge chute (141) is located on one side of the substrate (101) and is in a sealed state; when the position of the substrate (101) is lowered and located on one side of the lower discharge chute (141), the lower discharge chute (141) is in a sealed state, and the upper discharge chute (142) is connected to the cavity formed by the top of the substrate (101) and the die-casting cavity (10).

7. The processing equipment for automobile anti-friction pads according to claim 6, characterized in that: The inner surface of the sealing cover (16) is provided with a plurality of vertically arranged grooves (25).

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