Polishing device for automobile brake pad

Abstract

The invention relates to the technical field of brake pad polishing, in particular to a polishing device for an automobile brake pad, which comprises a base and a frame body, a polishing assembly is arranged on the frame body, a bidirectional moving assembly is arranged between two side plates on the base, a centering assembly is in transmission connection with the bidirectional moving assembly, and clamping assemblies are respectively arranged on two sides of the centering assembly. The clamping assembly is connected with the bidirectional moving assembly through a moving block to be driven by the bidirectional moving assembly; an open blind groove is formed in a base plate of the clamping assembly, and the wobble plate is rotatably connected with the open blind groove through a rotary T-shaped structure; when the device is used for centering and clamping brake pads of different shapes or specifications, centering and clamping can be completed through the centering assembly and the clamping assembly only by controlling rotation of the two-way threaded lead screw, and the problems that positioning is not accurate and manual intervention is needed are solved; the clamping assembly is of a multi-layer wobble plate structure, the inclination angle of each wobble plate can be adjusted in a self-adaptive mode, the brake pads can stably abut against the surfaces of the wobble plates, and frequent replacement of clamps is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of brake pad grinding, and particularly to a grinding device for automotive brake pads. Background Art

[0002] The grinding of automotive brake pads is a precise machining process. Its purpose is to perform surface treatment and dimensional correction on the brake pads in the braking system to ensure the best friction matching effect between the brake pads and the brake disc or brake drum. The working principle of this process is to use a dedicated grinding device to uniformly remove material and flatten the friction surface of the brake pads with a grinding tool, while precisely controlling the geometric dimensions of the brake pads to ensure that their thickness uniformity and flatness meet the technical requirements.

[0003] A Chinese patent document (Publication No.: CN117754410B) discloses a brake pad grinding device, which relates to the technical field of grinding, including a support base, on which a self-locking worm is rotatably installed; guide gears are fixedly installed at the front and rear ends of the self-locking worm; a self-locking worm gear is rotatably installed on the left side inside the support base; and a positioning base is slidably installed on the left side of the top of the support base. The present invention can synchronously achieve the sealing and two clamping and positioning operations of the brake pads during the necessary step of bringing the brake pads into contact with the grinding disc, which not only ensures the safety during the brake pad grinding process but also does not reduce the operation convenience of the grinding device due to too many protection structures, and solves the problem that there is no linkage between the cover structure and the fixture structure in the existing grinding devices, so the operations of the two tasks need to be carried out step by step, resulting in more trivial preparatory work before grinding and directly reducing the grinding efficiency of the brake pads.

[0004] In the prior art, when centering and clamping brake pads of different shapes or specifications, manual intervention in positioning is usually required, and fixtures need to be frequently replaced; moreover, it is difficult for the fixtures to adapt to different angles, and the situation of insecure fixation may occur. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a grinding device for automotive brake pads. When centering brake pads of different shapes or specifications, only the rotation of the bidirectional lead screw needs to be controlled to automatically operate the centering component and the clamping component to center and clamp the brake pads on the supporting plate, solving the problems of inaccurate positioning and the need for manual intervention in traditional grinding devices; the clamping component is arranged in a multi-level swing plate structure, which can adaptively adjust the inclination angles of each level of swing plates, so that the brake pads, whether circular, square or irregular, can stably abut against the surface of the swing plates, improving the adaptability to brake pads of different specifications and avoiding frequent replacement of fixtures.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A grinding device for automotive brake pads, comprising a fixedly connected base and a frame. A grinding assembly is arranged on the frame. Two side plates are arranged on the base. A bidirectional moving assembly is arranged between the two side plates. A centering assembly is drivingly connected to the bidirectional moving assembly. Clamping assemblies are respectively arranged on both sides of the centering assembly. The clamping assemblies are connected to the bidirectional moving assembly through moving blocks to receive its drive. The clamping assembly includes a chassis and a swing plate. An open blind groove is arranged on the chassis. The swing plate and the open blind groove are rotatably connected through a rotary T-shaped structure. The rotary T-shaped structure includes a rotary T-shaped groove arranged at the bottom of the open blind groove and a rotary T-shaped part fixedly arranged at the bottom of the swing plate. The rotary T-shaped part is slidably installed inside the rotary T-shaped groove. The swing plate adopts a multi-level nested structure. Open blind grooves are arranged on each level of the swing plate, and the next-level swing plate is arranged through the rotary T-shaped structure. The number of swing plates increases layer by layer.

[0007] Preferably, the bidirectional moving assembly includes a lead screw motor and a bidirectional lead screw. The lead screw motor is fixedly arranged on the side plate of the base. The bidirectional lead screw is installed between the two side plates and is connected to the output end of the lead screw motor. A track rod is arranged on the parallel side of the bidirectional lead screw. Two moving blocks are respectively screwed to both ends of the bidirectional lead screw and slidably sleeved on the track rod.

[0008] Preferably, the centering assembly includes a support plate for placing the brake pads, a linkage block and two guide frames. The linkage block is screwed and sleeved on the bidirectional lead screw and slidably sleeved on the track rod. The linkage block and one of the moving blocks are screwed on the same thread section of the bidirectional lead screw. A T-shaped chute is arranged at the top of the linkage block. The support plate is arranged above the linkage block. Guide frames are symmetrically and fixedly connected to both sides of the support plate. The guide frames are respectively fixedly connected to the side part of the base. Guide grooves are opened on the bottom plates of the guide frames. Guide rods are arranged at the tops of the guide frames. Sliders are sleeved on the guide rods. Centering circumferential pushing units are symmetrically arranged at the tops of the two sliders. A dovetail groove is arranged at the bottom end of the slider in the direction parallel to the axis of the track rod. A dovetail rod is slidably arranged in the dovetail groove. The dovetail rod penetrates through the guide groove. A limit slide plate is fixedly arranged at the end of the dovetail rod. The limit slide plate is installed in the T-shaped chute.

[0009] Preferably, the guide groove includes a first longitudinal groove and a second longitudinal groove arranged in the direction parallel to the axis of the track rod. The length of the first longitudinal groove is greater than that of the second longitudinal groove. First arc grooves and second arc grooves are respectively arranged at the end regions close to the ends of the first longitudinal groove and at both ends of the second longitudinal groove for connection.

[0010] Preferably, the arc-shaped groove close to the moving block in the same threaded section as the linkage block is the second arc-shaped groove; a first one-way plate is provided at the connection of the first arc-shaped groove and the first longitudinal groove, and a second one-way plate is provided at the connection of the first longitudinal groove and the second arc-shaped groove; the first one-way plate only allows entry from the first arc-shaped groove into the first longitudinal groove, and the second one-way plate only allows movement in the first longitudinal groove from the first arc-shaped groove towards the second arc-shaped groove.

[0011] Preferably, the first one-way plate and the second one-way plate are similar in structure and both include a baffle and a rotating shaft. The rotating shaft is installed in the guiding groove, the baffle is rotatably installed on the rotating shaft, a torsion spring is installed on the rotating shaft, and the end of the baffle away from the rotating shaft abuts against the inner wall of the guiding groove.

[0012] Preferably, the centering and surrounding pushing unit includes a box body fixed to the top end of the slider. An opening is provided on one side of the box body close to the supporting plate. A surrounding pushing component and a linkage component are arranged inside the opening. Wings are respectively slidably arranged on both sides of the top end of the box body. A limiting sliding groove is opened on the wing along the direction of the track rod. A T-shaped limiting block is arranged at the top of the box body corresponding to the limiting sliding groove, and the T-shaped limiting block is sleeved in the limiting sliding groove; a walking groove is opened at the top of the box body, and the connecting plate of the linkage component passes through the walking groove and is fixedly connected to the bottom of the wing; a wing guiding groove is opened on the wing, and the guide rod of the surrounding pushing component is sleeved in the wing guiding groove; when the linkage component drives the two wings to move relatively through the connecting plate, the driving guide rod slides in the wing guiding groove, and while unfolding the surrounding pushing component, it moves towards the center of the supporting plate to surround and push the brake pads to be centered.

[0013] Preferably, the linkage component includes a first transmission shaft. A first driving gear and a first driven gear are installed on the first transmission shaft. The first transmission shaft is rotatably installed between the upper and lower plates of the box body and the end extends through to the outside of the bottom plate. The first driving gear is located below the bottom plate of the box body, and the first driving gear meshes with a first toothed plate which is fixedly installed on the supporting plate; the first driven gear is located below the top plate of the box body. Two second toothed plates are arranged in a circular array on the center of the first driven gear. The two second toothed plates are slidably installed on the inner top wall of the box body. The ends of the two second toothed plates are fixedly provided with connecting plates, and the connecting plates respectively pass through the walking grooves of the top plate of the box body and are fixedly connected to the bottom of the adjacent wing; when the slider is driven to move towards the supporting plate, the first toothed plate meshes and drives the first driving gear, and drives the second toothed plates on both sides and the wings to move through the coaxial first driven gear, so that the two wings move relatively.

[0014] Preferably, the surrounding and pushing components include two groups of several box bodies arranged in a linear manner, and the two groups of linearly arranged box bodies are respectively located on both sides of the support plate; adjacent box bodies are connected by hinges, and the hinges of several box bodies located in the middle are set as reinforced hinges, and reinforced pins are set on the reinforced hinges, and the reinforced pins are installed between the upper and lower plates of the box body; among the several linearly arranged box bodies, guide rods are fixed on the box bodies located at both ends, and the guide rods are respectively located on the upper and lower end surfaces of the box body, the guide rods at the upper end of the box body are passed through the guide groove of the wing plate, and the guide rods at the lower end of the box body are passed through the track groove of the support plate; when the linearly arranged box bodies on both sides are driven to unfold by the wing plate, the several box bodies gradually form an enclosure, pushing the brake pad on the support plate in the center.

[0015] Preferably, an opening is provided on the end face of the box body close to the supporting plate, a second transmission shaft is installed inside the box body, a second driving gear and a second driven gear are fixed on the second transmission shaft, the second driving gear meshes with a pressure rod tooth plate, and the other end of the pressure rod tooth plate has a pressure rod, which slides through and extends to the outside of the side wall of the box body; the second driven gear meshes with the box body tooth plate, and the box body tooth plate is slidably arranged inside the box body, a tension spring is provided between the box body tooth plate and the inner wall of the box body, an elastic push block is fixed on the end of the box body tooth plate close to the box body opening, and a limiting telescopic rod is provided on the elastic push block parallel to the box body tooth plate; the elastic push block has two push blocks arranged in parallel, and a reset spring is installed between the two push blocks.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the device of the present invention, when centering brake pads of different shapes or specifications, it is only necessary to control the rotation of the bidirectional threaded screw to automatically operate the centering assembly and clamping assembly to center and clamp the brake pad on the support plate, thus solving the problems of inaccurate positioning and the need for manual intervention in traditional grinding equipment. Specifically, when the screw motor drives the bidirectional threaded screw to rotate, the two moving blocks are guided by the track rod to move relative to or away from each other, and the linkage block and the moving block on one side are screwed on the same thread segment of the bidirectional threaded screw to maintain synchronous movement, thereby driving the entire centering assembly to move accordingly; since the linkage block of the centering assembly and the moving blocks on both sides are set at a distance, when the moving block and the clamping assembly approach each other, the centering assembly automatically moves away after completing the centering adjustment of the brake pad, which is beneficial to the subsequent clamping of the clamping assembly; In the present invention, a supporting plate is arranged above the linkage block as a bearing platform for the brake pad. The guiding frames symmetrically connected to both sides thereof are fixed to the side part of the base to provide a stable guiding foundation. A sliding block sleeved on the guiding rod at the top of the guiding frame bears the centering and surrounding pushing unit; the dovetail rod penetrates through the guiding slot of the bottom plate of the guiding frame and a limiting sliding plate is fixedly arranged at the end part and is installed in the T-shaped sliding slot at the top end of the linkage block, forming a complete motion transmission chain. The action mechanism is that when the linkage block moves along with the bidirectional lead screw, the limiting sliding plate and the dovetail rod are driven to move in the guiding slot through the T-shaped sliding slot, so as to drive the sliding block to slide along the guiding rod, activating the centering and surrounding pushing unit to start working; Due to the composite structure design that the guiding slot adopts the first longitudinal slot and the second longitudinal slot which are arranged in parallel and are connected through the first arc-shaped slot and the second arc-shaped slot, and in cooperation with the limiting function of the one-way plate, after the sliding block moves to complete the centering of the brake pad, it automatically withdraws, making room for the clamping assembly to operate; through the cooperation of the first toothed plate and the first gear, the linkage component on the box body converts the moving stroke of the sliding block into the rotation of the first driving gear, driving the coaxial first driven gear to rotate, and the first driven gear drives two second toothed plates and the corresponding wing plates to generate relative horizontal movement; the wing plates are connected with the guide rods of the surrounding pushing components through the wing plate guiding slots. When the wing plates move relatively, the guiding slots drive the guide rods to move towards the center direction of the supporting plate, moving a plurality of linearly arranged boxes towards the center direction of the supporting plate, making several boxes gradually form an arc shape in the direction away from the strengthening pin shaft, realizing the symmetrical surrounding of both sides of the supporting plate and gradually forming a circle, pushing the brake pad towards the center, and completing the preliminary centering adjustment of the brake; during the process that several boxes gradually form a circle, the pressing rods on the boxes extrude the adjacent boxes, the pressing rods move to generate a stroke, and the pressing rods push the elastic pressing blocks to extend out of the boxes through the cooperation of the toothed plates and the gears, and the elastic pressing blocks extrude and push the brake pad for fine adjustment of centering.

[0017] 2. In the device of the present invention, the clamping assembly is arranged in a multi-level swing plate structure, which can adaptively adjust the inclination angles of the swing plates at all levels, enabling the brake pads, whether circular, square or irregular, to stably abut against the surface of the swing plates, improving the adaptability to brake pads of different specifications and avoiding frequent replacement of the fixture; Specifically, the open blind slot on the chassis and the swing plate are rotatably connected by means of a rotary T-shaped structure, enabling the rotary T-shaped part to freely slide inside the rotary T-shaped slot, thereby realizing the flexible adjustment and positioning of the swing plate. This multi-level nested structure design enables open blind slots to be arranged on the swing plates at all levels and the next-level swing plate to be arranged through the rotary T-shaped structure. The number of swing plates increases layer by layer to form a multi-level structure, which can automatically adjust the angles and positions of the swing plates at all levels according to brake pads of different shapes or specifications, improving the versatility and adaptability of the device and avoiding the cumbersome operation of replacing the fixture due to the specification differences of the brake pads. Description of the Drawings

[0018] Figure 1This is a three-dimensional schematic diagram of the overall installation structure of the device of the present invention; Figure 2 This is a schematic diagram of the installation structure of the guide frame and the supporting plate of the device of the present invention; Figure 3 It is a schematic perspective view of the disassembled structure of the clamping assembly of the device of the present invention; Figure 4 This is a three-dimensional schematic diagram of the disassembled structure of the surrounding pushing components of the device of the present invention; Figure 5 This is a three-dimensional schematic diagram of the position relationship of the guide grooves of the device of the present invention; Figure 6 This is a three-dimensional schematic diagram of the detachable structure of the wing plate and the box body of the device of the present invention; Figure 7 A three-dimensional diagram of the installation structure of the linkage components of the device of the present invention Figure 1 ; Figure 8 It is a partial cross-sectional perspective diagram of the top plate of the box body of the device of the present invention; Figure 9 A three-dimensional diagram of the installation structure of the linkage components of the device of the present invention Figure 2 ; Figure 10 It is a three-dimensional schematic diagram of the linear arrangement of the device boxes of the present invention; Figure 11 This is a three-dimensional schematic diagram of the internal state of the installation structure of the box body of the device of the present invention; In the figure: base 11; support leg 12; frame 13; grinding disc 14; electric telescopic cylinder 15; rotating motor 16; screw motor 17; bidirectional threaded screw 18; track rod 19; moving block 20; clamping assembly 21; linkage block 22; guide frame 23; support plate 24; slider 25; box 26; chassis 27; open blind slot 28; swing T-slot 29; swing plate 30; swing T-piece 31; guide rod 32; guide slot 33; Through slot 34; dovetail slot 35; dovetail rod 36; limit slide 37; T-shaped slot 38; wing plate 39; track slot 40; lifting plate 41; first longitudinal slot 42; second longitudinal slot 43; first arcuate slot 44; second arcuate slot 45; first one-way plate 46; limit slide 47; T-shaped limit block 48; wing plate guide slot 49; guide rod 50; travel slot 51; connecting plate -52; first transmission shaft-53; first driving gear-54; first tooth plate-55; first driven gear-56; second tooth plate-57; box body-58; hinge-59; reinforced hinge-60; reinforced pin-61; second transmission shaft-62; second driving gear-63; second driven gear-64; pressure rod tooth plate-65; box body tooth plate-66; tension spring-67; elastic push block-68; pressure rod-69. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] The content not detailedly described in this specification belongs to the prior art well-known to those skilled in the art. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0021] Figures 1 - 11 As shown in the figure, a grinding device for automotive brake pads includes a fixedly connected base 11 and a frame 13. A grinding assembly is provided on the frame 13. Two side plates are provided on the base 11. A bidirectional moving assembly is provided between the two side plates. A centering assembly is drivingly connected to the bidirectional moving assembly. Clamping assemblies 21 are provided on both sides of the centering assembly. The clamping assemblies 21 are connected to the bidirectional moving assembly through moving blocks 20 to receive its drive; the clamping assemblies 21 include a chassis 27 and a swing plate 30. An open blind groove 28 is provided on the chassis 27. The swing plate 30 and the open blind groove 28 are rotatably connected through a rotary T-shaped structure; the rotary T-shaped structure includes a rotary T-shaped groove 29 provided at the bottom of the open blind groove 28 and a rotary T-shaped member 31 fixedly provided at the bottom of the swing plate 30. The rotary T-shaped member 31 is slidably installed inside the rotary T-shaped groove 29; the swing plate 30 adopts a multi-level nested structure. Open blind grooves are provided on each level of the swing plate, and the next-level swing plate is provided through the rotary T-shaped structure, and the number of swing plates increases layer by layer.

[0022] The grinding assembly includes an electric telescopic cylinder 15 provided on the frame 13. The bottom of the electric telescopic cylinder 15 is connected to a lifting frame. A rotating motor 16 is installed inside the lifting frame. A grinding disc is provided at the output end of the rotating motor 16. A grinding sheet 14 is installed on the grinding disc; after the brake pads on the supporting plate 24 are centered and clamped, the grinding assembly is started, and the up-and-down height is adjusted through the electric telescopic rod 15 to complete grinding.

[0023] It should be noted that support legs 12 are provided at the bottom of the base 11.

[0024] When the lead screw motor 17 drives the double-threaded lead screw 18 to rotate, due to the opposite thread design at both ends of the double-threaded lead screw 18, the two moving blocks 20 move relatively or away from each other under the guidance of the track rod 19. The linkage block 22 and the moving block 20 on one side are screwed onto the same thread section of the double-threaded lead screw 18 to maintain synchronous movement, thereby driving the entire centering assembly to move accordingly. Since the linkage block 22 of the centering assembly and the moving blocks 20 on both sides are arranged at a distance interval, during the process of the moving blocks 20 and the clamping assembly 21 approaching each other, after the centering assembly completes the centering adjustment of the brake pads, it automatically moves away, which is beneficial for the subsequent clamping of the clamping assembly 21. Further, the bidirectional moving assembly includes a lead screw motor 17 and a double-threaded lead screw 18. The lead screw motor 17 is fixedly arranged on the side plate of the base 11. The double-threaded lead screw 18 is installed between the two side plates and is connected to the output end of the lead screw motor 17. A track rod 19 is arranged on the parallel side of the double-threaded lead screw 18. The two moving blocks 20 are respectively screwed onto both ends of the double-threaded lead screw 18 and are slidably sleeved on the track rod 19. The two ends of the double-threaded lead screw 18 are provided with opposite threads. The threads at both ends of the double-threaded lead screw 18 are respectively screwed onto the moving blocks 20 on both sides. When the double-threaded lead screw 18 is driven by the lead screw motor 17, the moving blocks 20 on both sides move relatively or away from each other, driving the clamping assemblies on the corresponding two sides to move relatively to achieve clamping and moving away from each other to achieve loosening. It should be noted that the linkage block 22 in the centering assembly and the adjacent moving block 20 are screwed onto the thread section on one side of the double-threaded lead screw 18, while only the adjacent moving block 20 is screwed onto the thread section on the other side of the double-threaded lead screw 18. Since the chassis 27 of the clamping assemblies 21 on both sides approaches the centering assembly in a suspended manner to complete clamping and then retreats, it avoids the moving blocks 20 on both sides from colliding with the centering assembly or interfering with each other. Among them, the thread pitch of the threaded section where the linkage block 22 is screwed onto the double-threaded lead screw 18 can be selected to be different from the thread pitch of the part where the moving block 20 is engaged according to the actual stroke or running time.

[0025] In the device of the present invention, the clamping assembly 21 is arranged in a multi-level swing plate 30 structure, which can adaptively adjust the inclination angles of the swing plates at all levels, so that the brake pads, whether circular, square or irregular, can stably abut against the surface of the swing plate 30, improving the adaptability to brake pads of different specifications and avoiding frequent replacement of fixtures. Specifically, a rotatable connection is achieved between the open blind groove 28 on the chassis 27 and the swing plate 30 by using a rotary T-shaped structure, so that the rotary T-shaped part 31 can slide freely inside the rotary T-shaped groove 29, thereby realizing flexible adjustment and positioning of the swing plate 30. This multi-level nested structure design enables each level of the swing plate to be provided with an open blind groove and the next level of the swing plate to be set through the rotary T-shaped structure. The number of the swing plates increases layer by layer to form a multi-level structure, which can automatically adjust the angle and position of each level of the swing plate according to the different shapes or specifications of the brake pads, thereby improving the versatility and adaptability of the device and avoiding the tedious operation of replacing the clamp due to differences in the specifications of the brake pads.

[0026] Furthermore, the centering component includes a supporting plate 24 for placing brake pads, a linkage block 22 and two guide frames 23. The linkage block 22 is screwed onto the bidirectional threaded screw 18 and slidably mounted on the track rod 19. The linkage block 22 and the moving block 20 on one side are screwed onto the same threaded segment of the bidirectional threaded screw 18. A T-shaped slide groove 38 is provided at the top of the linkage block 22. The supporting plate 24 is provided above the linkage block 22. Both sides of the supporting plate 24 are symmetrically fixedly connected to the guide frames 23. The guide frames 23 are respectively fixedly connected to the side portions of the base 11. The bottom plate of the guide frame 23 A guide groove 33 is provided on each of the guide frames 23, a guide rod 32 is provided on the top of each guide frame 23, a slider 25 is sleeved on the guide rod 32, a through groove 34 corresponding to the guide rod 32 is provided on the slider 25, the guide rod 32 is slidably passed through the through groove 34, and a centering pushing unit is symmetrically provided on the top of the two sliders 25; a dovetail groove 35 is provided at the bottom end of the slider 25 parallel to the axial direction of the track rod 19, a dovetail rod 36 is slidably provided in the dovetail groove 35, the dovetail rod 36 passes through the guide groove 33, and a limiting slide 37 is fixed at the end of the dovetail rod 36, and the limiting slide 37 is installed in the T-shaped slide groove 38.

[0027] The support plate 24 is arranged above the linkage block 22 as a bearing platform for the brake pads. The guide frames 23 symmetrically connected on both sides are fixed to the sides of the base 11 to provide a stable guiding foundation. The slider 25 mounted on the guide rod 32 at the top of the guide frame 23 carries the centering and surrounding push unit. In the present invention, the dovetail rod 36 passes through the guide groove 33 of the bottom plate of the guide frame 23 and a limiting slide 37 is fixed at the end and installed in the T-shaped slide 38 at the top of the linkage block 22, forming a complete motion transmission chain. Its working mechanism is that when the linkage block 22 moves with the bidirectional threaded screw 18, the limiting slide 37 and the dovetail rod 36 are driven to move in the guide groove 33 through the T-shaped slide 38, thereby driving the slider 25 to slide along the guide rod 32, activating the centering push unit to start working.

[0028] In the device of the present invention, only by rotating the bidirectional lead screw 18, the centering assembly and the clamping assembly 21 are operated to automatically center and clamp the brake pads on the supporting plate 24, centering the brake pads with different shapes or specifications, and solving the problems of inaccurate positioning and the need for manual intervention in traditional grinding equipment; the working principle and functions will be described in detail below.

[0029] Further, the guiding groove 33 includes a first longitudinal groove 42 and a second longitudinal groove 43 arranged parallel to the axis direction of the track rod 19. The first longitudinal groove 42 is longer than the second longitudinal groove 43. The first arc groove 44 and the second arc groove 45 are respectively arranged at the two ends of the second longitudinal groove 43 in the area near the end of the first longitudinal groove 42 for connection; furthermore, the arc groove close to the moving block 20 of the same thread section as the linkage block 22 is the second arc groove 45; a first one-way plate 46 is arranged at the connection of the first arc groove 44 and the first longitudinal groove 42, and a second one-way plate is arranged at the connection of the first longitudinal groove 42 and the second arc groove 45; the first one-way plate 46 only allows entry from the first arc groove 44 into the first longitudinal groove 42, and the second one-way plate only allows movement in the first longitudinal groove 42 from the first arc groove 44 towards the direction of the second arc groove 45; further, the first one-way plate 46 and the second one-way plate have similar structures, both including a baffle and a rotating shaft. The rotating shaft is installed in the guiding groove 33, the baffle is rotatably installed on the rotating shaft, a torsion spring is installed on the rotating shaft, and the end of the baffle away from the rotating shaft abuts against the inner wall of the guiding groove.

[0030] Due to the composite structure design of the guiding groove 33 with the parallel first longitudinal groove 42 and second longitudinal groove 43, and then connected through the first arc groove 44 and the second arc groove 45, combined with the limiting function of the one-way plate, after the slider 25 moves to complete the centering of the brake pads, it automatically exits, making room for the clamping assembly 21 to operate.

[0031] Furthermore, the centering surrounding and pushing unit includes a box body 26 fixed to the top end of the slider 25. An opening is arranged on one side of the box body 26 close to the supporting plate 24. A surrounding and pushing component and a linkage component are arranged inside the opening. Wing plates 39 are respectively slidably arranged on both sides of the top of the box body 26. A limiting sliding groove 47 is opened on the wing plates 39 along the direction of the track rod 19, and a T-shaped limiting block 48 is arranged on the top of the box body 26 corresponding to the limiting sliding groove 47; a walking groove 51 is opened on the top of the box body 26. The connecting plate 52 of the linkage component passes through the walking groove 51 and is fixedly connected to the bottom of the wing plate 39; a wing plate guiding groove 49 is opened on the wing plate 39, and the guide rod 50 of the surrounding and pushing component is sleeved in the wing plate guiding groove 49; when the linkage component drives the two wing plates 39 to move relatively through the connecting plate 52, the guide rod 50 is driven to slide in the wing plate guiding groove 49, and while expanding the surrounding and pushing component, it moves towards the center of the supporting plate 24 to surround and center the brake pads.

[0032] Further, the linkage component includes a first transmission shaft 53, on which a first driving gear 54 and a first driven gear 56 are mounted. The first transmission shaft 53 is rotatably installed between the top plate and the bottom plate of the box body 26, and its end extends through the bottom plate to the outside. The first driving gear 54 is located below the bottom plate of the box body 26 and meshes with a first toothed plate 55, which is fixedly installed on the supporting plate 24; the first driven gear 56 is located below the top plate of the box body 26, and two second toothed plates 57 are arranged in a circular array on the center of the first driven gear 56. The two second toothed plates 57 are slidably installed on the inner top wall of the box body 26, and the ends of the two second toothed plates 57 are fixedly provided with a connecting plate 52, which respectively passes through the walking grooves 51 on the top plate of the box body 26 and is fixedly connected to the bottom of the adjacent wing plates 39; when the slider 25 is driven to move towards the supporting plate 24, the first toothed plate 55 meshes with and drives the first driving gear 54, and drives the second toothed plates 57 and the wing plates 39 on both sides through the coaxial first driven gear 56, so that the two wing plates 39 move relatively.

[0033] Furthermore, the surrounding and pushing component includes two groups of linearly arranged boxes 58, which are respectively located on both sides of the supporting plate 24; adjacent boxes are connected by hinges 59, and the hinges of several boxes located in the middle are set as reinforced hinges 60, and reinforced pin shafts 61 are arranged on the reinforced hinges 61, and the reinforced pin shafts 61 are installed between the top plate and the bottom plate of the box body 26; among the linearly arranged several boxes, guide rods 50 are fixedly arranged on the boxes 58 at both ends, and the guide rods 50 are respectively located on the upper and lower end faces of the box 58. The guide rod at the upper end of the box penetrates into the wing plate guide groove 49, and the guide rod at the lower end of the box penetrates into the track groove 40 of the supporting plate 24; limit caps are arranged at both the upper and lower ends of the guide rod 50, which are slidably abutted against the wing plate 39 and the supporting plate 24; when the linearly arranged boxes on both sides are driven by the wing plate 39 to unfold, several boxes 58 gradually form a surrounding circle, and centrally push the brake pads on the supporting plate 24; The linearly arranged several boxes can rotate around the reinforced pin shaft 61. Among the linearly arranged several boxes, adjacent boxes 58 can rotate around the adjacent hinge 59 and close to form an arc; when the linearly arranged boxes on both sides are driven by the wing plate 39 to unfold, several boxes 58 on both sides of the supporting plate 24 gradually form a surrounding circle, and centrally push the brake pads on the supporting plate 24.

[0034] Through the cooperation of the first toothed plate 55 and the first gear 54, the linkage component on the box body 26 converts the moving stroke of the slider 25 into the rotation of the first driving gear 54, drives the coaxial first driven gear 56 to rotate, and the first driven gear 56 drives the two second toothed plates 57 and the corresponding wing plates 39 to generate relative horizontal movement; The wing plate 39 is connected to the guide rod 50 of the surrounding and pushing component through the wing plate guide groove 49. When the wing plate 39 moves relatively, the guide groove 49 drives the guide rod 50 to move towards the center direction of the supporting plate 24, moving multiple linearly arranged boxes 58 towards the center direction of the supporting plate 24, causing several boxes 58 to gradually form an arc in the direction away from the strengthening pin shaft 61, realizing the symmetrical surrounding of both sides of the supporting plate 24 and gradually forming a circle, pushing the brake pads in the center, and completing the preliminary centering adjustment of the brake.

[0035] Further, an opening is provided on the end face of the box 58 close to the supporting plate 24. A second transmission shaft 62 is installed inside the box 58. A second driving gear 63 and a second driven gear 64 are fixedly arranged on the second transmission shaft 62. The second driving gear 63 meshes with the pressure rod toothed plate 65. The other end of the pressure rod toothed plate 65 has a pressure rod 69, and the pressure rod 69 penetrates and extends outside the side wall of the box 58. The second driven gear 64 meshes with the box toothed plate 66. The box toothed plate 66 is slidably arranged inside the box. A tension spring 67 is arranged between the box toothed plate 66 and the inner wall of the box. An elastic push block 68 is fixedly arranged at the end of the box toothed plate 66 adjacent to the opening of the box. A limit telescopic rod (not shown in the figure) is arranged on the elastic push block 68 parallel to the box toothed plate 66. The elastic push block 68 has two parallel push blocks, and a return spring is installed between the two push blocks. A blind groove is provided at the center of the supporting plate 24. An opening is provided at the bottom of the blind groove. A lifting plate 41 is installed inside the blind groove. A telescopic cylinder (not shown in the figure) is installed at the bottom end of the blind groove. The output end of the telescopic cylinder penetrates through the opening and is connected to the lifting plate 41. The telescopic cylinder and the lifting plate 41 cooperate to lift the brake pads that have been centered, realizing the adjustment for brake pads of different thicknesses.

[0036] During the process that several boxes 58 gradually form a circle, the pressure rod 69 on the box 58 squeezes the adjacent box. The pressure rod 69 moves to generate a stroke. The pressure rod 69 drives the elastic pressure block 68 to extend out of the box through the cooperation of the toothed plate and the gear. The elastic pressure block 68 squeezes and pushes the brake pads for fine adjustment of centering.

[0037] The technical concept of the present invention is illustrated by the above embodiments, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that the relevant improvements to the present invention fall within the protection scope and the disclosure scope of the present invention.

Claims

1. A grinding device for automobile brake pads, comprising a base (11) and a frame (13) fixedly connected, and a grinding assembly is arranged on the frame (13), characterized in that, Two side plates are arranged on the base (11), a bidirectional moving component is arranged between the two side plates, a centering component is drivingly connected to the bidirectional moving component, clamping components (21) are respectively arranged on both sides of the centering component, and the clamping components (21) are connected to the bidirectional moving component through moving blocks (20) to receive its drive; the clamping component (21) includes a chassis (27) and a swing plate (30), an open blind groove (28) is arranged on the chassis (27), and the swing plate (30) is rotatably connected to the open blind groove (28) through a rotary T-shaped structure; the rotary T-shaped structure includes a rotary T-shaped groove (29) arranged at the bottom of the open blind groove (28) and a rotary T-shaped part (31) fixed at the bottom of the swing plate (30), and the rotary T-shaped part (31) is slidably installed inside the rotary T-shaped groove (29); the swing plate (30) adopts a multi-level nested structure, open blind grooves are arranged on each level of the swing plate, and the next-level swing plate is arranged through a rotary T-shaped structure, and the number of swing plates increases layer by layer.

2. The grinding device for automotive brake pads according to claim 1, characterized in that, The bidirectional moving component includes a lead screw motor (17) and a bidirectional lead screw (18), the lead screw motor (17) is fixed on the side plate of the base (11), the bidirectional lead screw (18) is installed between the two side plates and connected to the output end of the lead screw motor (17), a track rod (19) is arranged on the parallel side of the bidirectional lead screw (18), and two moving blocks (20) are respectively screwed to both ends of the bidirectional lead screw (18) and slidably sleeved on the track rod (19).

3. The grinding device for automotive brake pads according to claim 2, characterized in that, The centering component includes a supporting plate (24) for placing the brake pads, a linkage block (22) and two guide frames (23), the linkage block (22) is screwed and sleeved on the bidirectional lead screw (18) and slidably sleeved on the track rod (19), the linkage block (22) and a moving block (20) on one side are screwed on the same thread section of the bidirectional lead screw (18), and a T-shaped chute (38) is arranged at the top of the linkage block (22); the supporting plate (24) is arranged above the linkage block (22), guide frames (23) are symmetrically and fixedly connected to both sides of the supporting plate (24), the guide frames (23) are respectively fixedly connected to the side part of the base (11), guide grooves (33) are opened on the bottom plates of the guide frames (23), guide rods (32) are arranged at the tops of the guide frames (23), sliders (25) are sleeved on the guide rods (32), and centering surrounding pushing units are symmetrically arranged at the tops of the two sliders (25); a dovetail groove (35) is arranged at the bottom end of the slider (25) parallel to the axis direction of the track rod (19), a dovetail rod (36) is slidably arranged in the dovetail groove (35), the dovetail rod (36) penetrates through the guide groove (33), and a limit sliding plate (37) is fixedly arranged at the end of the dovetail rod (36) and installed in the T-shaped chute (38).

4. The grinding device for automotive brake pads according to claim 3, characterized in that, The guide groove (33) includes a first longitudinal groove (42) and a second longitudinal groove (43) arranged parallel to the axis direction of the track rod (19), the length of the first longitudinal groove (42) is greater than that of the second longitudinal groove (43), and first arc grooves (44) and second arc grooves (45) are respectively arranged at the end regions close to the first longitudinal groove (42) and both ends of the second longitudinal groove (43) for connection.

5. The grinding device for automotive brake pads according to claim 4, characterized in that, The arc groove close to the moving block (20) with the same thread section as the linkage block (22) is the second arc groove (45); a first one-way plate (46) is arranged at the connection of the first arc groove (44) and the first longitudinal groove (42), and a second one-way plate is arranged at the connection of the first longitudinal groove (42) and the second arc groove (45); the first one-way plate (46) only allows entry from the first arc groove (44) into the first longitudinal groove (42), and the second one-way plate only allows travel in the first longitudinal groove (42) from the first arc groove (44) towards the second arc groove (45).

6. The grinding device for automotive brake pads according to claim 5, characterized in that, The first one-way plate (46) and the second one-way plate are similar in structure and both include a baffle plate and a rotating shaft. The rotating shaft is installed in the guiding groove (33), the baffle plate is rotatably installed on the rotating shaft, a torsion spring is installed on the rotating shaft, and the end of the baffle plate far from the rotating shaft abuts against the inner wall of the guiding groove.

7. The grinding device for automotive brake pads according to claim 3, characterized in that, The centering and surrounding pushing unit includes a box body (26) fixed to the top end of the slider (25). An opening is provided on one side of the box body (26) close to the supporting plate (24). A surrounding pushing component and a linkage component are arranged inside the opening. Wing plates (39) are slidably arranged on both sides of the top end of the box body (26). A limiting sliding groove (47) is opened on the wing plate (39) along the direction of the track rod (19). A T-shaped limiting block (48) is arranged on the top end of the box body (26) corresponding to the limiting sliding groove (47), and the T-shaped limiting block (48) is sleeved in the limiting sliding groove (47); a walking groove (51) is opened at the top end of the box body (26). The connecting plate (52) of the linkage component passes through the walking groove (51) and is fixedly connected to the bottom of the wing plate (39); a wing plate guiding groove (49) is opened on the wing plate (39), and the guide rod (50) of the surrounding pushing component is sleeved in the wing plate guiding groove (49); when the linkage component drives the two wing plates (39) to move relatively through the connecting plate (52), the driving guide rod (50) slides in the wing plate guiding groove (49), expands the surrounding pushing component and moves towards the center of the supporting plate (24) to surround and push the brake pads to the center.

8. The grinding device for automotive brake pads according to claim 7, characterized in that, The linkage component includes a first transmission shaft (53). A first driving gear (54) and a first driven gear (56) are mounted on the first transmission shaft. The first transmission shaft (53) is rotatably installed between the upper and lower plates of the box body (26) and its end extends through the bottom plate to the outside. The first driving gear (54) is located below the bottom plate of the box body (26), and the first driving gear (54) meshes with a first toothed plate (55). The first toothed plate (55) is fixedly installed on the supporting plate (24); the first driven gear (56) is located below the top plate of the box body (26). Two second toothed plates (57) are arranged in a circular array on the center of the first driven gear (56). The two second toothed plates (57) are slidably installed on the inner top wall of the box body (26). Connecting plates (52) are fixedly arranged at the ends of the two second toothed plates (57). The connecting plates (52) respectively pass through the running slots (51) on the top plate of the box body (26) and are fixedly connected to the bottom of the adjacent wing plates (39); when the slider (25) is driven to move towards the supporting plate (24), the first toothed plate (55) meshes and drives the first driving gear (54), and drives the second toothed plates (57) on both sides and the wing plates (39) through the coaxial first driven gear (56), so that the two wing plates (39) move relatively.

9. The grinding device for automotive brake pads according to claim 7, characterized in that, The surrounding and pushing component includes several box bodies (58) arranged linearly in two groups. The two groups of linearly arranged box bodies are respectively located on both sides of the supporting plate (24); adjacent box bodies are connected by hinges (59). The hinges in the middle of several box bodies are set as reinforced hinges (60). Reinforced pins (61) are arranged on the reinforced hinges. The reinforced pins (61) are installed between the upper and lower plates of the box body (26); among the several box bodies arranged linearly, guide rods (50) are fixedly arranged on the box bodies (58) at both ends. The guide rods (50) are respectively located at the upper and lower end faces of the box body (58). The guide rod at the upper end of the box body penetrates into the wing plate guide groove (49), and the guide rod at the lower end of the box body penetrates into the track groove (40) of the supporting plate (24); when the linearly arranged box bodies on both sides are driven by the wing plates (39) to unfold, several box bodies (58) gradually form a surrounding shape and centrally push the brake pads on the supporting plate (24).

10. The grinding device for automotive brake pads according to claim 9, wherein, An opening is arranged on the end face of the box body (58) close to the supporting plate (24). A second transmission shaft (62) is installed inside the box body (58). A second driving gear (63) and a second driven gear (64) are fixedly arranged on the second transmission shaft (62). The second driving gear (63) meshes with a pressure lever toothed plate (65). The other end of the pressure lever toothed plate (65) has a pressure lever (69). The pressure lever (69) slides through and extends to the outside of the side wall of the box body (58); the second driven gear (64) meshes with a box body toothed plate (66). The box body toothed plate (66) is slidably arranged inside the box body. A tension spring (67) is arranged between the box body toothed plate (66) and the inner wall of the box body. An elastic push block (68) is fixedly arranged at the end of the box body toothed plate (66) close to the opening of the box body. A limit telescopic rod is arranged on the elastic push block (68) parallel to the box body toothed plate (66); the elastic push block (68) has two parallel push blocks, and a return spring is installed between the two push blocks.

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