Production process of wear-resistant and heat-insulating brake pad

Abstract

The present invention relates to the technical field of brake pad production, and discloses a production process for wear-resistant and heat-insulating brake pads, comprising the following steps: Step 1, powdering, subjecting the friction layer raw material and the heat-insulating layer raw material of the brake pad to powdering, and pre-storing the obtained friction layer powder and heat-insulating layer powder separately. Step 2, introducing the friction layer powder into a mold for hot pressing and forming, and after cooling, evenly arranging the heat-insulating layer powder on the friction layer in the mold, and then hot-pressing a second time to form the friction pad. Step 3, steel back glue coating, placing the steel back after surface hardening treatment on a glue coating machine for glue coating. The present invention not only enhances the heat-insulating effect by improving the purity of the heat-insulating layer, but also performs multiple hot pressing on the friction layer, thereby improving the wear resistance of the friction layer. By improving the steel back glue coating process and equipment, a uniform glue layer can be formed on the steel back, providing good preparation for the bonding of the heat-insulating layer and the steel back in rough blank forming.

Description

Technical Field

[0001] The present invention relates to the technical field of brake pad production, and in particular to a production process of a wear-resistant and heat-insulating brake pad. Background Art

[0002] Automotive brake systems primarily include drum brakes and disc brakes. Drum brakes have been gradually phased out due to poor thermal degradation resistance, low safety, and insufficient braking force. Disc brakes, also known as disc brakes, consist of a brake disc attached to the wheel and a brake caliper attached to the edge of the disc. When braking, hydraulic fluid pushes a plunger in the caliper, which in turn pushes the brake pads against the disc, producing the braking effect.

[0003] During braking, the brake pads generate a significant amount of heat due to friction. To prevent this heat from being transferred through the plunger to the hydraulic oil in the cylinder and potentially deteriorating the oil, the brake pad structure incorporates a heat-insulating layer bonded to the steel backing and friction pad. During braking, the friction pads are pressed against the brake disc, generating friction that decelerates the vehicle. This friction gradually wears away the pads, achieving braking effectiveness through wear and tear.

[0004] In existing brake pad production technology, the friction lining and thermal insulation layer are typically integrally formed, resulting in insufficient purity of the insulation material within the thermal insulation layer, which in turn affects the insulation effect. Furthermore, due to the unique operating conditions of friction pads, the bond between the thermal insulation layer and the steel backing is often subject to significant shear forces, necessitating strict control over the application of glue to the steel backing. While existing gluing methods often improve gluing efficiency, the curved shape of most disc brake pads makes it difficult to evenly distribute the glue and results in a thinner glue layer. Summary of the Invention

[0005] The purpose of the present invention is to provide a production process for wear-resistant and heat-insulating brake pads to solve the following technical problems:

[0006] (1) How to improve the wear resistance and heat insulation performance of brake pads.

[0007] (2) How to solve the problems of uneven glue coating and too thin glue coating thickness in the process of gluing the steel back of the brake pad.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] A production process for a wear-resistant and heat-insulating brake pad comprises the following steps:

[0010] Step 1: Powdering: Powdering the raw materials of the friction layer and the heat insulation layer of the brake pad, and pre-storing the friction layer powder and the heat insulation layer powder separately.

[0011] Step 2: The friction layer powder is introduced into a mold for hot pressing. After cooling, the insulation layer powder is evenly arranged on the friction layer in the mold, and then hot pressed for a second time to form a friction plate.

[0012] Step 3: Glue the steel back. Place the surface-hardened steel back on the glue coating machine for gluing. Specifically, according to the curvature radius of the concave edge arc of the steel back, drive the servo motor to adjust the position of the support assembly, use the support assembly to clamp and fix the steel back, drive the electric push rod to adjust the initial position of the glue pump, turn on the glue pump, and drive the motor at the same time to evenly apply glue to one side of the steel back.

[0013] Step 4: Rough forming: the heat insulation layer of the friction plate is bonded to the glue-coated surface of the steel back and hot-pressed again to form a brake pad rough.

[0014] Step 5: Heat treat the brake pad blank for 6-8 hours at a heating temperature of 160-200°C. After natural cooling, grind the burrs on the brake pad.

[0015] As a further solution of the present invention, the component processing in step 1 is specifically as follows:

[0016] The friction layer raw materials and the heat insulation layer raw materials are crushed into coarse materials by using a crusher.

[0017] The friction layer coarse material is ground into powder with an average particle size of 8-10 μm using a grinder.

[0018] Another grinder is used to grind the coarse material of the thermal insulation layer into powder with an average particle size of 10-15 μm.

[0019] As a further solution of the present invention, the glue coating machine includes a base, a support frame is fixedly provided on the base, a motor is installed on the support frame, and the lower end of the support frame is connected to a supporting beam through an electric push rod.

[0020] A gluing mechanism is slidably mounted on the supporting beam, and the lower end of the motor is rotatably connected to an adjusting mechanism via a transmission shaft. A supporting assembly for placing a steel back is slidably mounted on the adjusting mechanism, and the adjusting mechanism is used to adjust the position of the supporting assembly.

[0021] Through the above technical solution, the steel backs of brake pads with different curvatures can be evenly coated with glue, providing better preparation for the bonding of the thermal insulation layer and the steel back in the rough forming step.

[0022] As a further solution of the present invention, the adjusting mechanism includes a shell fixedly connected to the lower end of the transmission shaft, a servo motor is fixedly installed at the lower end of the shell, a driving bevel gear connected to the servo motor is provided in the shell, and the axis of the driving bevel gear coincides with the axis of the transmission shaft, a plurality of driven bevel gears are engaged with the side end of the driving bevel gear, one end of the driven bevel gear is coaxially fixedly connected to a screw rod, and the screw rod is rotatably connected to the side wall of the shell, and the side wall of the shell is fixedly provided with a slide rail parallel to the screw rod.

[0023] Through the above technical solution, a specific structure of the adjustment mechanism is provided, which can not only realize the position change of the support component and the placed steel back during the gluing process, but also preset the position change route of the support component and the placed steel back according to the different curvatures of the steel back before gluing.

[0024] As a further embodiment of the present invention, the support assembly includes a slider slidably connected to the slide rail, the slider being threadedly connected to the screw. The slider is provided with a through hole parallel to the screw, a guide rod slidably connected within the through hole, one end of the guide rod being fixedly connected to a limit block, and a spring being fixedly provided between the limit block and the slider. The other end of the guide rod is fixedly connected to a dynamic clamping block, and the upper end of the slider is integrally formed with a fixed clamping block.

[0025] Through the above technical solution, a specific structure of the support assembly is provided, which can fix and support steel backs of different widths in a clamping manner.

[0026] As a further solution of the present invention, a mounting groove is provided on one side of the movable clamping block close to the fixed clamping block, two rollers are rotatably provided in the mounting groove, and the two rollers are mirror-symmetrical about the vertical plane where the screw rod is located.

[0027] Through the above technical solution, a structure for centering the clamping position is provided, which ensures that the curvature of the position change path of the steel back during the gluing process matches the curvature of the steel back itself, making preset preparations for uniform gluing.

[0028] As a further solution of the present invention, the side wall of the supporting beam is provided with a sliding groove along the length direction of the beam, and the gluing mechanism includes a glue pump and a rack slidingly connected to the supporting beam along the length direction of the beam, the rack is embedded in the sliding groove and slidingly connected to the sliding groove, and a limiting clamp for clamping the glue pump is detachably installed on the rack.

[0029] Through the above technical solution, a specific structure of a gluing mechanism is provided, which realizes the position adjustment of the gluing pump during the gluing process, and facilitates uniform gluing.

[0030] As a further embodiment of the present invention, a reset gear and a single-tooth gear are sequentially mounted on the transmission shaft from top to bottom, with the teeth of the reset gear and the single-tooth gear corresponding to each other vertically. When the electric push rod is retracted, the rack meshes with the reset gear. When the electric push rod is extended, the rack meshes with the single-tooth gear.

[0031] Through the above technical solution, a specific structure for realizing the position adjustment function of the glue pump is provided, thereby realizing intermittent adjustment of the position of the glue pump during the gluing process.

[0032] As a further solution of the present invention, a caster is installed at the lower end of the slide rail, and the wheel surface of the caster is in contact with the upper end surface of the base.

[0033] Through the above technical solution, a structure for auxiliary support of the adjustment mechanism is provided, and the movement of the adjustment mechanism is not affected while achieving the supporting function.

[0034] Beneficial effects of the present invention:

[0035] (1) The present invention proposes a production process for a wear-resistant and heat-insulating brake pad, comprising the steps of raw material composition, friction pad molding, steel back glue coating, rough blank molding, and rough blank heat treatment. After the friction layer is initially formed, heat insulation layer powder is added and hot pressed twice, which not only improves the heat insulation effect by improving the purity of the heat insulation layer, but also improves the wear resistance of the friction layer by performing multiple hot pressing on the friction layer. By improving the steel back glue coating process and equipment, a uniform glue layer can be formed on the steel back, providing good preparation for the bonding of the heat insulation layer and the steel back during rough blank molding, and also improving the overall quality of the brake pad.

[0036] (2) The present invention provides a glue coating machine, wherein the adjustment mechanism can rotate with the transmission shaft and adjust the position of the support assembly on the adjustment mechanism that places the steel back. As the adjustment mechanism rotates, the position of the steel back relative to the glue coating mechanism shifts in an arc, and the glue coating mechanism can apply glue along the circumference of the curved arc of the steel back. By sliding the glue coating mechanism and the supporting beam, the position of the glue coating mechanism can be adjusted during the coating process, and the glue coating mechanism can move radially along the curved arc of the steel back. During the glue coating process, the glue coating mechanism responsible for spraying glue and the support assembly that fixes the steel back can both change position, thereby uniformly coating the steel back with glue and solving the problem of thin colloid coating thickness.

[0037] (3) In the gluing machine of the present invention, the sliding connection between the support assembly and the adjustment mechanism can preset and adjust the movement path of the support assembly and the placed steel back around the transmission shaft according to the different bending curvatures of the steel back before gluing, ensuring that the curvature of the steel back position change path matches the curvature of the steel back itself during the gluing process, so that gluing can be performed on steel backs with different bending curvatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be further described below with reference to the accompanying drawings.

[0039] Figure 1 This is a flow chart of the production process of the wear-resistant and heat-insulating brake pad of the present invention;

[0040] Figure 2 Schematic diagram of the overall three-dimensional structure of the glue coating machine of the present invention;

[0041] Figure 3 It is a schematic structural diagram of the adjustment mechanism of the glue coating machine in the present invention after partial section;

[0042] Figure 4 Schematic diagram of the structure of the support assembly in the present invention;

[0043] Figure 5 It is a structural schematic diagram of the gluing mechanism in the present invention;

[0044] Figure 6 A top view of the gluing machine of the present invention;

[0045] Figure 7 A comparison diagram of the position states of the support assembly in different working conditions in the present invention;

[0046] Figure 8 This is a schematic diagram of the state after the steel back is coated with glue in the present invention.

[0047] Description of the drawings: 1. Base; 2. Support frame; 3. Motor; 4. Electric push rod; 5. Support beam; 6. Gluing mechanism; 7. Transmission shaft; 8. Adjustment mechanism; 9. Support assembly; 10. Steel back; 11. Glue line; 601. Gluing pump; 602. Rack; 603. Limit clamp; 604. Reset gear; 605. Single-tooth gear; 801. Housing; 802. Servo motor; 803. Driving bevel gear; 804. Driven bevel gear; 805. Screw; 806. Slide rail; 807. Caster; 901. Slider; 902. Guide rod; 903. Limit block; 904. Spring; 905. Dynamic clamping block; 9051. Roller; 906. Fixed clamping block. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0049] Please see attached picture Figure 1As shown, the present invention is a production process for a wear-resistant and heat-insulating brake pad, comprising the following steps:

[0050] Step 1: Powdering: Powdering the friction layer raw material and the heat insulation layer raw material of the brake pad, and pre-storing the friction layer powder and the heat insulation layer powder separately;

[0051] Step 2: introducing the friction layer powder into a mold for hot pressing and forming. After cooling, evenly arranging the heat insulation layer powder on the friction layer in the mold, and then hot pressing for a second time to form the friction plate;

[0052] Step three, glue coating on the steel back. Place the steel back 10 after surface hardening treatment on the glue coating machine for glue coating. Specifically, according to the curvature radius of the concave edge arc of the steel back, drive the servo motor 802 to adjust the position of the support component 9, use the support component 9 to clamp and fix the steel back, drive the electric push rod 4 to adjust the initial position of the glue coating pump 601, turn on the glue coating pump 601, and drive the motor 3 at the same time to evenly coat one side of the steel back 10 with glue.

[0053] Step 4: rough blank forming, bonding the heat insulation layer of the friction plate to the glue-coated surface of the steel back 10 and hot pressing again to form a brake pad rough blank;

[0054] Step 5: Heat treat the brake pad blank for 7 hours at a heating temperature of 180°C. After natural cooling, grind the burrs on the brake pad.

[0055] The component processing in step 1 is specifically as follows:

[0056] Using a crusher to crush the friction layer raw material and the heat insulation layer raw material into coarse materials respectively;

[0057] The friction layer coarse material is ground into powder with an average particle size of 9 μm using a grinder;

[0058] Another grinder is used to grind the coarse material of the thermal insulation layer to a powder with an average particle size of 13 μm.

[0059] Please see attached picture Figure 2 、 6 As shown, the glue coating machine includes a base 1, a support frame 2 is fixed on the base 1, a motor 3 is installed on the support frame 2, and a supporting beam 5 is connected to the lower end of the support frame 2 through an electric push rod 4;

[0060] A gluing mechanism 6 is slidably installed on the supporting beam 5, and the lower end of the motor 3 is rotatably connected to an adjusting mechanism 8 through a transmission shaft 7. A supporting assembly 9 for placing a steel back 10 is slidably provided on the adjusting mechanism 8, and the adjusting mechanism 8 is used to adjust the position of the supporting assembly 9.

[0061] In this embodiment, the adjustment mechanism 8 rotatably connected to the motor 3 can rotate with the transmission shaft 7 and adjust the position of the support assembly 9 on which the steel back 10 is placed on the adjustment mechanism 8. As the adjustment mechanism 8 rotates, the position of the steel back 10 relative to the gluing mechanism 6 is offset in an arc, and the gluing mechanism 6 can apply glue along the circumference of the curved arc of the steel back 10. Through the sliding installation arrangement of the gluing mechanism 6 and the receiving beam 5, the position of the gluing mechanism 6 can be adjusted during the coating process, and the gluing mechanism 6 can move radially along the curved arc of the steel back 10. The sliding connection between the support assembly 9 and the adjustment mechanism 8 can preset and adjust the movement routes of the support assembly 9 and the placed steel back 10 around the transmission shaft 7 before gluing according to the different curvatures of the steel back 10, such as Figure 7 As shown, it is ensured that the curvature of the steel back 10 position change path matches the curvature of the steel back 10 itself during the gluing process. Through the above adjustment scheme, the steel back 10 with different curvatures can be evenly coated with glue.

[0062] Please see attached picture Figure 3 As shown, the adjusting mechanism 8 includes a shell 801 fixedly connected to the lower end of the transmission shaft 7, a servo motor 802 is fixedly installed at the lower end of the shell 801, a driving bevel gear 803 connected to the servo motor 802 is provided in the shell 801, and the axis of the driving bevel gear 803 coincides with the axis of the transmission shaft 7, and a plurality of driven bevel gears 804 are engaged with the side end of the driving bevel gear 803, one end of the driven bevel gear 804 is coaxially fixedly connected to a screw rod 805, and the screw rod 805 is rotatably connected to the side wall of the shell 801, and the side wall of the shell 801 is fixedly provided with a slide rail 806 parallel to the screw rod 805.

[0063] Please see attached picture Figure 4 As shown, the support assembly 9 includes a slider 901 slidably connected to the slide rail 806, and the slider 901 is connected to the screw rod 805 by a thread; a through hole parallel to the screw rod 805 is opened on the slider 901, and a guide rod 902 is slidably connected in the through hole, and one end of the guide rod 902 is fixedly connected to a limit block 903, and a spring 904 is also fixedly provided between the limit block 903 and the slider 901; the other end of the guide rod 902 is fixedly connected to a dynamic clamping block 905, and the upper end of the slider 901 is integrally formed with a fixed clamping block 906.

[0064] Please see attached picture Figure 4 As shown, a mounting groove is provided on one side of the movable clamping block 905 close to the fixed clamping block 906 , and two rollers 9051 are rotatably provided in the mounting groove, and the two rollers 9051 are mirror-symmetrical about the vertical plane where the screw rod 805 is located.

[0065] Through the above technical solution, this embodiment provides a specific structure of the adjustment mechanism 8 and the support assembly 9. Specifically, the lower end of the transmission shaft 7 is fixedly connected to the housing 801, and the motor 3 can drive the housing 801 to rotate around the transmission shaft 7. The lower end of the housing 801 is fixedly mounted with a servo motor 802. A driving bevel gear 803 is provided in the housing 801 and is transmission-connected to the servo motor 802. The axis of the driving bevel gear 803 coincides with the axis of the transmission shaft 7. The side end of the driving bevel gear 803 is meshed with a plurality of driven bevel gears 804. One end of the driven bevel gear 804 is coaxially fixedly connected to a screw rod 805, and the screw rod 805 is rotationally connected to the side wall of the housing 801. The servo motor 802 drives the driving bevel gear 803 to rotate, thereby driving the screw rod 805 fixedly connected to the driven bevel gear 804 to rotate. The side wall of the shell 801 is fixed with a slide rail 806 parallel to the screw rod 805. The slider 901 in the support assembly 9 is slidably connected to the slide rail 806. At the same time, the slider 901 is also threadedly connected to the screw rod 805. As the screw rod 805 rotates, the slider 901 can slide on the slide rail 806. It should be noted that multiple support assemblies 9 can be arranged around the transmission shaft 7. The transmission method of the driving bevel gear 803 and multiple driven bevel gears 804 can realize the synchronous position adjustment of multiple support assemblies 9.

[0066] In this embodiment, the support assembly 9 is constructed as follows: a through hole parallel to the screw rod 805 is formed on the slider 901, into which a guide rod 902 is slidably connected. One end of the guide rod 902 is fixedly connected to a limit block 903, and a spring 904 is fixedly disposed between the limit block 903 and the slider 901. A dynamic clamping block 905 is fixedly attached to the other end of the guide rod 902, and a fixed clamping block 906 is integrally formed at the upper end of the slider 901. The steel backing 10 is placed on the upper end of the slider 901 and is clamped and secured by the dynamic clamping block 905 and the fixed clamping block 906. The configuration of the guide rod 902 allows the clamping opening of the dynamic clamping block 905 and the fixed clamping block 906 to be adjusted, thereby enabling the clamping of steel backings 10 of varying widths. The configuration of the limit block 903 and the spring 904 allows the elastic force of the spring 904 to clamp the steel backing 10. In addition, a mounting groove is provided on the side of the movable clamping block 905 close to the fixed clamping block 906. Two rollers 9051 are rotatably provided in the mounting groove, and the two rollers 9051 are mirror-symmetrical about the vertical plane where the screw 805 is located. Since the axis of the driving bevel gear 803 coincides with the axis of the transmission shaft 7, the sliding direction of the slider 901 points to the axis of the transmission shaft 7. When clamping and fixing the steel back 10, the position of the slider 901 can be adjusted according to the curvature radius of the concave edge arc of the steel back 10, so that the curvature radius of the concave edge arc of the steel back 10 is equal to the distance from the roller axis to the axis of the transmission shaft 7 plus the radius length of the roller 9051. Thereafter, it is necessary to ensure that the concave edge of the steel back 10 is in contact with the two rollers 9051 at the same time, that is, the concave edge arc is tangent to the wheel surface circle of the roller 9051. Since the two rollers 9051 are mirror-symmetrical about the vertical plane where the screw 805 is located, it is easy to obtain from the geometric relationship that the center of the circle where the concave edge arc is located is on the axis of the transmission shaft 7. When the glue coating mechanism 6 remains in the same position, the adjusting mechanism 8 is rotated, and the steel back 10 can be coated with the following glue: Figure 8 Glue line 11 shown.

[0067] Please see attached picture Figure 5 As shown, the side wall of the supporting beam 5 is provided with a sliding groove along the length direction of the beam, and the gluing mechanism 6 includes a glue pump 601 and a rack 602 which are slidably connected to the supporting beam 5 along the length direction of the beam, the rack 602 is embedded in the sliding groove and slidably connected to the sliding groove, and a limiting clamp 603 for clamping the glue pump 601 is detachably installed on the rack 602.

[0068] Please see attached picture Figure 5 As shown, the transmission shaft 7 is sequentially mounted with a reset gear 604 and a single-tooth gear 605 from top to bottom, and the teeth of the reset gear 604 and the single-tooth gear 605 correspond to each other. When the electric push rod 4 is retracted, the rack 602 is engaged with the reset gear 604; when the electric push rod 4 is extended, the rack 602 is engaged with the single-tooth gear 605. Please refer to the accompanying drawings. Figure 3As shown, a caster 807 is installed at the lower end of the slide rail 806, and the wheel surface of the caster 807 is in contact with the upper end surface of the base 1.

[0069] This embodiment provides a specific structure of the glue coating mechanism 6. During the glue coating process, the electric push rod 4 is stretched, so that the single-tooth gear 605 can mesh with the rack 602. The transmission shaft 7 rotates, driving the single-tooth gear 605 to rotate, driving the rack 602 to slide along the slide groove, and then driving the glue coating pump 601 to slide intermittently along the slide groove through the clamping of the limit clamp 603. And every time the adjustment mechanism 8 rotates one circle, the glue coating pump 601 slides a constant distance. Therefore, Figure 8 As shown, the gluing process can evenly form multiple equidistant arc-shaped glue lines 11 on the steel back 10. By setting the reset gear 604 corresponding to the upper and lower teeth of the single-tooth gear 605, after the gluing is completed, the electric push rod 4 retracts, the reset gear 604 engages with the rack 602, and the transmission shaft 7 rotates forward or backward, which can quickly drive the rack 602 to slide and adjust the glue pump 601 to the appropriate initial position.

[0070] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A production process for a wear-resistant and heat-insulating brake pad, characterized in that: include: Step 1: Powdering: Powdering the friction layer raw material and the heat insulation layer raw material of the brake pad, and pre-storing the friction layer powder and the heat insulation layer powder separately; Step 2: introducing the friction layer powder into a mold for hot pressing and forming. After cooling, evenly arranging the heat insulation layer powder on the friction layer in the mold, and then hot pressing for a second time to form the friction plate; Step 3: Glue coating on the steel back. The steel back after surface hardening treatment is placed on the glue coating machine for glue coating. Specifically, the servo motor (802) is driven to adjust the position of the support component (9) according to the curvature radius of the concave edge arc of the steel back. The steel back is clamped and fixed by the support component (9). The electric push rod (4) is driven to adjust the initial position of the glue coating pump (601). The glue coating pump (601) is turned on and the motor (3) is driven at the same time to evenly coat the glue on one side of the steel back. Step 4: rough blank forming, bonding the heat insulation layer of the friction plate to the glued surface of the steel back and hot pressing again to form a brake pad rough blank; Step 5: Heat treat the brake pad blank for 6-8 hours at a temperature of 160-200°C. After cooling naturally, grind the burrs on the brake pad. The glue coating machine comprises a base (1), a support frame (2) is fixedly provided on the base (1), a motor (3) is installed on the support frame (2), and the lower end of the support frame (2) is connected to a supporting beam (5) via an electric push rod (4); A gluing mechanism (6) is slidably mounted on the receiving beam (5), and an adjusting mechanism (8) is rotatably connected to the lower end of the motor (3) via a transmission shaft (7). A supporting assembly (9) for placing a steel back (10) is slidably mounted on the adjusting mechanism (8), and the adjusting mechanism (8) is used to adjust the position of the supporting assembly (9).

2. The production process of a wear-resistant and heat-insulating brake pad according to claim 1, characterized in that: The component processing in step 1 is specifically as follows: Using a crusher to crush the friction layer raw material and the heat insulation layer raw material into coarse materials respectively; Grind the friction layer coarse material into powder with an average particle size of 8-10 μm using a grinder; Another grinder is used to grind the coarse material of the thermal insulation layer into powder with an average particle size of 10-15 μm.

3. The production process of a wear-resistant and heat-insulating brake pad according to claim 1, characterized in that: The adjustment mechanism (8) includes a housing (801) fixedly connected to the lower end of the transmission shaft (7), a servo motor (802) fixedly mounted on the lower end of the housing (801), a driving bevel gear (803) transmission-connected to the servo motor (802) provided in the housing (801), and the axis of the driving bevel gear (803) coincides with the axis of the transmission shaft (7), a plurality of driven bevel gears (804) are meshed with the side end of the driving bevel gear (803), one end of the driven bevel gear (804) is coaxially fixedly connected to a screw rod (805), and the screw rod (805) is rotatably connected to the side wall of the housing (801), and a slide rail (806) parallel to the screw rod (805) is fixedly provided on the side wall of the housing (801).

4. The production process of a wear-resistant and heat-insulating brake pad according to claim 2, characterized in that: The support assembly (9) includes a slider (901) slidably connected to the slide rail (806), and the slider (901) is connected to the screw rod (805) by a thread; a through hole parallel to the screw rod (805) is opened on the slider (901), and a guide rod (902) is slidably connected in the through hole, one end of the guide rod (902) is fixedly connected to a limit block (903), and a spring (904) is fixedly provided between the limit block (903) and the slider (901); the other end of the guide rod (902) is fixedly connected to a dynamic clamping block (905), and the upper end of the slider (901) is integrally formed with a fixed clamping block (906).

5. The production process of a wear-resistant and heat-insulating brake pad according to claim 4, characterized in that: A mounting groove is provided on one side of the movable clamping block (905) close to the fixed clamping block (906), and two rollers (9051) are rotatably arranged in the mounting groove, and the two rollers (9051) are mirror-symmetrical about the vertical plane where the screw rod (805) is located.

6. The production process of a wear-resistant and heat-insulating brake pad according to claim 1, characterized in that: The side wall of the supporting beam (5) is provided with a sliding groove along the length direction of the beam, and the gluing mechanism (6) includes a gluing pump (601) and a rack (602) which are slidably connected to the supporting beam (5) along the length direction of the beam, the rack (602) is embedded in the sliding groove and slidably connected to the sliding groove, and a limiting clamp (603) for clamping the gluing pump (601) is detachably mounted on the rack (602).

7. The production process of a wear-resistant and heat-insulating brake pad according to claim 6, characterized in that: A reset gear (604) and a single-tooth gear (605) are sequentially mounted on the transmission shaft (7) from top to bottom, and the teeth of the reset gear (604) and the single-tooth gear (605) correspond to each other up and down. When the electric push rod (4) is in a retracted state, the rack (602) is engaged with the reset gear (604); when the electric push rod (4) is in an extended state, the rack (602) is engaged with the single-tooth gear (605).

8. The production process of a wear-resistant and heat-insulating brake pad according to claim 3, characterized in that: A caster (807) is installed at the lower end of the slide rail (806), and the wheel surface of the caster (807) is in contact with the upper end surface of the base (1).

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