A grinding device for the outer arc surface of a block brake friction plate

Abstract

The present application relates to a grinding device for the outer arc surface of a block brake friction plate, belonging to the technical field of brake production equipment. It includes a frame, on which a turntable and a first motor for driving the turntable to rotate are provided. A fixed cylinder is provided on the turntable. A feeding mechanism for feeding the friction plate into the turntable is provided at the feeding end of the frame. A clamping mechanism for clamping the friction plate and an ejecting mechanism for ejecting the friction plate out of the turntable are provided on the fixed cylinder. A grinding mechanism for grinding the outer arc surface of the friction plate is provided on the frame. The present application has the effects of improving the grinding efficiency and reducing the labor intensity.

Description

Technical Field

[0001] This application relates to the field of brake production equipment, and particularly to a device for grinding the outer arc surface of the friction plate of a block brake. Background Art

[0002] A block brake, also known as a drum brake, achieves braking by pressing the friction plate against the brake wheel. Currently, the mainstream of block brakes is the internal expanding type, where the friction plate is located inside the brake wheel. When braking, the friction plate expands outward and rubs against the inner side of the brake wheel to achieve the braking purpose. In the past three decades, block brakes have gradually withdrawn from the passenger car field and given way to disc brakes. However, due to the relatively low cost, block brakes are still used in some economy cars, mainly for the rear wheels with relatively low braking loads and parking brakes.

[0003] After the block brake friction plate is drilled, there are a large number of burrs on its surface, especially on the outer arc surface. It is necessary to grind the outer arc surface of the friction plate. In the prior art, generally, manual labor is used to grind and remove the burrs at the hole openings, resulting in high labor intensity and low grinding efficiency. Summary of the Invention

[0004] In order to improve the grinding efficiency and reduce the labor intensity, this application provides a device for grinding the outer arc surface of the friction plate of a block brake.

[0005] A device for grinding the outer arc surface of the friction plate of a block brake provided by this application adopts the following technical solutions:

[0006] A device for grinding the outer arc surface of the friction plate of a block brake includes a frame. A turntable and a first motor for driving the turntable to rotate are provided on the frame. A fixed cylinder is provided on the turntable. A feeding mechanism for feeding the friction plate into the turntable is provided at the feeding end of the frame. A clamping mechanism for clamping the friction plate and an ejecting mechanism for ejecting the friction plate out of the turntable are provided on the fixed cylinder. A grinding mechanism for grinding the outer arc surface of the friction plate is provided on the frame.

[0007] By adopting the above technical solutions, after the friction plate is fed into the turntable by the feeding mechanism, the clamping mechanism clamps the friction plate. Subsequently, the first motor is started to drive the turntable to rotate. The rotation of the turntable drives the fixed cylinder to rotate, and then drives the friction plate to rotate. During the rotation of the turntable, the grinding mechanism is started to grind the friction plate. After grinding is completed, the clamping mechanism is loosened, and the friction plate is ejected out of the turntable by the ejecting mechanism, realizing the automatic grinding of the friction plate, improving the grinding efficiency, and reducing the labor intensity.

[0008] Optionally, the grinding mechanism includes a fixing frame provided on the machine frame. A grinding roller is rotatably connected to the fixing frame. A second motor for driving the grinding roller to rotate is provided on the fixing frame. The circumferential surface of the grinding roller abuts against the outer arc surface of the friction plate.

[0009] By adopting the above technical solution, when the turntable rotates, the friction plate itself rotates around the circumferential surface of the fixed cylinder. At the same time, the second motor is started to drive the grinding roller to rotate, which can improve the uniformity of the grinding of the friction plate by the grinding roller.

[0010] Optionally, the clamping mechanism includes a plurality of first clamping rods and second clamping rods provided on the outer circumferential surface of the fixed cylinder. The first clamping rods and the second clamping rods are slidably connected to the fixed cylinder along the circumferential direction of the fixed cylinder. A driving mechanism for driving the first clamping rods and the second clamping rods to move relative to or away from each other is provided on the fixed cylinder.

[0011] By adopting the above technical solution, after the friction plate is placed between the first clamping rod and the second clamping rod by the feeding mechanism, the driving mechanism is started, and the driving mechanism drives the first clamping rod and the second clamping rod to move relative to each other, so as to achieve the purpose of clamping the friction plate.

[0012] Optionally, the driving mechanism includes a first circular arc rack and a second circular arc rack with opposite tooth surfaces. The first circular arc rack is fixedly connected to the first clamping rod, and the second circular arc rack is fixedly connected to the second clamping rod. A rotating gear is connected between the first circular arc rack and the second circular arc rack. A third motor for driving the rotating gear to rotate is provided on the fixed cylinder.

[0013] By adopting the above technical solution, when the third motor is started, it drives the rotating gear to rotate. The rotating gear drives the first circular arc rack and the second circular arc rack to move relatively closer or away from each other. The first circular arc rack drives the first clamping rod, and the second circular arc rack drives the second clamping rod, thereby achieving the purpose of driving the first clamping rod and the second clamping rod to move relative to or away from each other.

[0014] Optionally, the ejecting mechanism includes an ejecting block provided on the fixed cylinder. An ejecting hole is provided on the circumferential surface of the fixed cylinder. The ejecting hole is located between the first clamping rod and the second clamping rod. The ejecting block has a first state of passing through the ejecting hole and a second state of not passing through the ejecting hole. When the ejecting block is in the first state, the ejecting rod ejects the friction plate out of the turntable.

[0015] By adopting the above technical solution, when the friction plate is being ground, the ejecting block is in the second state; when the friction plate is finished being ground and the clamping mechanism is released, the ejecting block is in the second state, thereby ejecting the friction plate attached to the fixed cylinder out of the turntable, realizing the separation of the friction plate from the fixed cylinder and the turntable, and facilitating the feeding and grinding operations of the next batch of friction plates.

[0016] Optionally, a guide rod is provided at one end of the ejector block away from the corresponding friction plate. The guide rod is horizontally arranged. The ejector block is slidably connected to the guide rod. A first elastic member is sleeved on the guide rod. One end of the first elastic member is fixed to the ejector block, and the other end is fixed to the guide rod. A first guiding inclined surface is provided at one end of the ejector block away from the guide rod. An elevating driving source for driving the guide rod to move up and down is provided on the frame.

[0017] By adopting the above technical solution, during feeding, the elevating driving source drives the guide rod to move up and down to disengage it from the ejection hole, so as to facilitate pushing the friction plate onto the turntable. When the grinding is completed, the elevating driving source drives the guide rod to move up and down so that the ejector block penetrates into the ejection hole. At this time, the clamping mechanism is loosened, and the ejector block penetrates out of the ejection hole, thereby achieving the purpose of ejecting the friction plate from the turntable.

[0018] Optionally, when the ejector block disengages from the ejection hole, a limiting plate for restricting relative rotation between the ejector block and the ejection hole is provided on the fixed cylinder. The guide rod is connected with a lifting rod. A bearing is provided at the top end of the lifting rod. The lifting rod is fixed to the outer ring of the bearing. A connecting rod is fixed to the inner ring of the bearing. Each of the connecting rods is commonly connected to the output end of the same elevating driving source.

[0019] By adopting the above technical solution, one elevating driving source is used to drive multiple lifting rods to move up and down, and the lifting rods drive the corresponding guide rods to move up and down, which can reduce the number of elevating driving sources and thus reduce the layout space.

[0020] Optionally, the feeding mechanism includes a feeding cylinder provided on the frame. A feeding hole for the friction plate to penetrate from the bottom to the top of the turntable is provided on the turntable. The feeding hole is correspondingly arranged with the output end of the feeding cylinder.

[0021] By adopting the above technical solution, the friction plate is fed by the feeding cylinder, which further improves the automation degree of the grinding device and reduces the labor intensity.

[0022] Optionally, the feeding mechanism further includes a stacking groove provided on the frame. The stacking groove is located below the turntable. A pushing cylinder for pushing the friction plate to feed is provided on the stacking groove. An avoidance hole for the output end of the feeding cylinder to move up and down is provided at one end of the bottom wall of the stacking groove away from the pushing cylinder. A discontinuous mechanism for separating the friction plate to be fed and its adjacent friction plates is provided on the stacking groove.

[0023] By adopting the above technical solution, the pushing cylinder realizes the purpose of feeding the friction plates in the material loading groove. By arranging an intermittent mechanism between the friction plate to be loaded and the adjacent friction plate, the friction plate to be loaded can be separated from the adjacent friction plate, reducing the possibility that the adjacent friction plate is driven to move upward when the friction plate to be loaded is loaded, thereby reducing the situation that the friction plates in the material loading groove fall off.

[0024] Optionally, the intermittent mechanism includes an intermittent block and a second elastic member. An installation groove is provided on the bottom wall of the material loading groove. The installation groove is arranged between the friction plate to be loaded and the adjacent friction plate. The second elastic member is arranged in the installation groove. The intermittent block is arranged at one end of the second elastic member away from the bottom wall of the installation groove. A second guiding inclined surface is provided on the side of the top end of the intermittent block facing away from the turntable. When the second elastic member is in the natural state, the intermittent block is partially located in the installation groove, and the bottom edge of the second guiding inclined surface is flush with the edge of the notch of the installation groove or is located in the installation groove.

[0025] By adopting the above technical solution, since there is a gap between the outer arc surface and the inner arc surface of the adjacent friction plates, when the pushing cylinder pushes the friction plate to feed, through the setting of the second guiding inclined surface, the friction plate to be loaded can cross the intermittent block; then the pushing cylinder retracts, and the top edge of the second guiding inclined surface is located between the friction plate to be loaded and the adjacent friction plate. Through the setting of the second guiding inclined surface, the adjacent friction plate slides down along the second guiding inclined surface, so that the friction plate to be loaded and the adjacent friction plate are separated from each other, thereby reducing the possibility that the adjacent friction plate is driven to move upward when the friction plate to be loaded is loaded.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. After the friction plates are sent into the turntable by the feeding mechanism, the clamping mechanism clamps the friction plates. Then the first motor is started to drive the turntable to rotate. The rotation of the turntable drives the fixed cylinder to rotate, and then drives the friction plates to rotate. During the rotation of the turntable, the grinding mechanism is started to grind the friction plates. After the grinding is completed, the clamping mechanism is loosened, and the friction plates are ejected from the turntable by the ejecting mechanism, realizing the automatic grinding of the friction plates, improving the grinding efficiency and reducing the labor intensity;

[0028] 2. Through the setting of the ejecting block, when the friction plates are being ground, the ejecting block is in the second state; when the friction plates are ground, after the clamping mechanism is loosened, the ejecting block is in the second state, thereby ejecting the friction plates attached to the fixed cylinder from the turntable, realizing the separation of the friction plates from the fixed cylinder and the turntable, and facilitating the feeding and grinding operations of the next batch of friction plates;

[0029] 3. By setting up the intermittent mechanism, the friction plates to be loaded can be separated from the adjacent friction plates, reducing the possibility that the adjacent friction plates are driven to move upward when loading the friction plates to be loaded, thereby reducing the situation where the friction plates in the loading chute fall off. Description of the Drawings

[0030] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0031] Figure 2 is the sectional view showing the loading mechanism in the embodiment of the present application.

[0032] Figure 3 is Figure 2 the partial enlarged schematic diagram at A in

[0033] Figure 4 is the structural schematic diagram showing the driving mechanism in the embodiment of the present application.

[0034] Figure 5 is Figure 4 the partial enlarged schematic diagram at B in

[0035] Figure 6 is the sectional view showing the ejecting mechanism in the embodiment of the present application.

[0036] Figure 7 is the sectional view showing the cooperation relationship between the limiting end and the sliding cavity in the embodiment of the present application.

[0037] Description of the Reference Numerals: 1, frame; 11, first motor; 12, turntable; 121, loading hole; 13, fixed cylinder; 131, sliding groove; 132, ejecting hole; 133, limiting plate; 14, mounting frame; 141, lifting driving source; 2, loading mechanism; 21, loading chute; 211, pushing cylinder; 2111, pushing plate; 212, avoiding hole; 213, mounting groove; 22, loading cylinder; 221, receiving plate; 3, clamping mechanism; 31, first clamping rod; 32, second clamping rod; 33, sliding block; 4, ejecting mechanism; 41, ejecting block; 411, sliding cavity; 412, first guiding inclined surface; 42, guiding rod; 421, limiting end; 422, first elastic member; 423, fixing ring; 43, lifting rod; 431, bearing; 432, connecting rod; 44, connecting frame; 5, grinding mechanism; 51, fixing frame; 52, grinding roller; 53, second motor; 6, intermittent mechanism; 61, intermittent block; 611, second guiding inclined surface; 62, second elastic member; 7, driving mechanism; 71, first circular arc rack; 72, second circular arc rack; 73, rotating gear; 74, third motor; 8, friction plate. Detailed Embodiments

[0038] The following is combined with the attachedFigure 1-7 , the present application will be further described in detail.

[0039] An embodiment of the present application discloses a grinding device for the outer arc surface of a block brake friction plate. Refer to Figure 1 , a grinding device for the outer arc surface of a block brake friction plate 8, including a frame 1, and the frame 1 is a frame structure. A first motor 11 is fixed on the frame 1, and the output end of the first motor 11 is coaxially fixed with a turntable 12, and the turntable 12 is rotatably arranged on the frame 1. A fixed cylinder 13 is fixed in the center of the turntable 12, and the outer peripheral surface of the fixed cylinder 13 is attached to the inner arc surface of the friction plate 8.

[0040] Refer to Figure 1 , a feeding mechanism 2 for feeding the friction plate 8 into the turntable 12 is provided at the feeding end of the frame 1, a clamping mechanism 3 for clamping the friction plate 8 is provided on the fixed cylinder 13, and a grinding mechanism 5 for grinding the outer arc surface of the friction plate 8 is provided on the frame 1.

[0041] When using this device to grind the friction plate 8, after the friction plate 8 is fed into the turntable 12 through the feeding mechanism 2, the clamping mechanism 3 clamps the friction plate 8, and then the first motor 11 is started to drive the turntable 12 to rotate. The rotation of the turntable 12 drives the fixed cylinder 13 to rotate, and then drives the friction plate 8 to rotate. During the rotation of the turntable 12, the grinding mechanism 5 is started to grind the friction plate 8, realizing the automatic grinding of the friction plate 8, improving the grinding efficiency and reducing the labor intensity.

[0042] Refer to Figure 1 and Figure 2 , the feeding mechanism 2 includes a material stacking groove 21 for stacking the friction plates 8 and a feeding cylinder 22 fixed at the bottom of the material stacking groove 21. The inner arc surfaces of the friction plates 8 in the material stacking groove 21 are all arranged towards the center of the turntable 12. The material stacking groove 21 is fixed at the feeding end of the frame 1 and the material stacking groove 21 is located below the turntable 12. A feeding hole 121 is opened on the turntable 12 for the friction plate 8 to pass through from the bottom to the top of the turntable 12. The material stacking groove 21 is arranged along the length direction of the frame 1, and a pushing cylinder 211 is fixed at one end of the material stacking groove 21 away from the center of the turntable 12. The output end of the pushing cylinder 211 is fixed with a pushing plate 2111 and is arranged towards the turntable 12. When the pushing cylinder 211 pushes the pushing plate 2111 to move towards the turntable 12, the pushing cylinder 211 realizes the feeding of the friction plate 8 in the material stacking groove 21.

[0043] Refer to Figure 1 and Figure 2, the output end of the feeding cylinder 22 is set upward, and a receiving plate 221 is fixed to the output end of the feeding cylinder 22. The receiving plate 221 is used to lift the friction plate 8 to be fed to the clamping mechanism 3. An avoidance hole 212 for the lifting of the receiving plate 221 is provided at the bottom of the material loading groove 21. When the feeding hole 121 rotates towards the feeding end, the hole positions of the avoidance hole 212 and the feeding hole 121 are vertically corresponding.

[0044] Refer to Figure 2 and Figure 3 , a discontinuous mechanism 6 for separating the friction plate 8 to be fed and the adjacent friction plate 8 is provided on the material loading groove 21. The discontinuous mechanism 6 includes a discontinuous block 61 and a second elastic member 62. An installation groove 213 is provided on the inner bottom wall of the material loading groove 21. The installation groove 213 is located between the friction plate 8 to be fed and the adjacent friction plate 8. One end of the second elastic member 62 is fixed to the bottom wall of the installation groove 213, and the other end is fixed to the bottom of the discontinuous block 61. In this embodiment, the second elastic member 62 is a compression spring, which can give the friction plate 8 a buffer when the friction plate 8 crosses the discontinuous block 61. The side of the discontinuous block 61 away from the cylinder abuts against the outer arc surface of the friction plate 8 to be fed. A second guiding inclined surface 611 is provided on the side of the top end of the discontinuous block 61 facing away from the turntable 12. When the second elastic member 62 is in the natural state, the lower end of the discontinuous block 61 is located in the installation groove 213, and the upper end exposes the installation groove 213. At this time, the bottom edge of the second guiding inclined surface 611 is flush with the edge of the notch of the installation groove 213 or is located in the installation groove 213.

[0045] Since the friction plates 8 for grinding processing have the same shape, there is a gap between the outer arc surface and the inner arc surface of adjacent friction plates 8. When the pushing cylinder 211 pushes the friction plate 8 to feed, through the setting of the second guiding inclined surface 611, the friction plate 8 to be fed can cross the discontinuous block 61; then the pushing cylinder 211 retracts, and the top edge of the second guiding inclined surface 611 is located between the friction plate 8 to be fed and the adjacent friction plate 8. Through the setting of the second guiding inclined surface 611, the adjacent friction plate 8 slides down along the second guiding inclined surface 611, so that the friction plate 8 to be fed and the adjacent friction plate 8 are separated from each other, thereby reducing the possibility that the adjacent friction plate 8 is driven to move upward when the friction plate 8 to be fed is loaded, and thus reducing the situation that the friction plates 8 in the material loading groove 21 fall off.

[0046] Refer to Figure 4 , the clamping mechanism 3 includes a plurality of groups of first clamping rods 31 and second clamping rods 32 arranged on the outer peripheral surface of the fixed cylinder 13. Sliding blocks 33 are fixed to the sides of the first clamping rods 31 and the second clamping rods 32 facing the fixed cylinder 13. A sliding groove 131 for the sliding blocks 33 to rotate around the outer peripheral surface of the fixed cylinder 13 is provided on the outer peripheral surface of the fixed cylinder 13. A driving mechanism 7 for driving the first clamping rod 31 and the second clamping rod 32 to move relatively or away from each other is provided on the fixed cylinder 13.

[0047] Referring to Figure 4 and Figure 5 Figure 5 , the driving mechanism 7 includes a first circular arc rack 71 and a second circular arc rack 72 with opposite tooth surfaces. During the movement, the first circular arc rack 71 and the second circular arc rack 72 are always concentric with the fixed cylinder 13. The first circular arc rack 71 is fixedly connected to the first clamping rod 31, and the second circular arc rack 72 is fixedly connected to the second clamping rod 32. A rotating gear 73 is engaged between the first circular arc rack 71 and the second circular arc rack 72. A third motor 74 for driving the rotating gear 73 to rotate is fixed on the outer side wall of the fixed cylinder 13.

[0048] When the third motor 74 is started, it drives the rotating gear 73 to rotate. The rotating gear 73 drives the first circular arc rack 71 and the second circular arc rack 72 to move relatively closer. The first circular arc rack 71 drives the first clamping rod 31, and the second circular arc rack 72 drives the second clamping rod 32, thereby driving the first clamping rod 31 and the second clamping rod 32 to move relatively, so as to realize the clamping of the friction plate 8.

[0049] Referring to Figure 1 Figure 1 , after the friction plate 8 is clamped, the turntable 12 rotates to rotate the friction plate 8 to the grinding mechanism 5 for grinding. The grinding mechanism 5 includes a fixed frame 51. The fixed frame 51 is fixed on the frame 1. A grinding roller 52 is rotatably connected to the fixed frame 51. The axial direction of the grinding roller 52 is arranged vertically. A second motor 53 for driving the grinding roller 52 to rotate is fixed on the fixed frame 51. During the rotation of the turntable 12, the friction plate 8 itself rotates around the circumferential surface of the fixed cylinder 13. At the same time, the second motor 53 is started to drive the grinding roller 52 to rotate. The circumferential surface of the grinding roller 52 abuts against the outer arc surface of the friction plate 8, so as to grind the outer arc surface of the friction plate 8.

[0050] Referring to Figure 4 and Figure 6 Figure 6 , a jacking mechanism 4 for jacking out the friction plate 8 from the turntable 12 is provided on the fixed cylinder 13. After the friction plate 8 is ground, the clamping mechanism 3 is loosened. At the same time, the jacking mechanism 4 jacks out the friction plate 8 to the airspace area above the turntable 12. The jacking mechanism 4 includes a jacking block 41 installed on the fixed cylinder 13. A jacking hole 132 is formed on the circumferential surface of the fixed sleeve. The jacking hole 132 is located between the first clamping rod 31 and the second clamping rod 32. The jacking block 41 has a first state of passing through the jacking hole 132 and a second state of not passing through the jacking hole 132. When the jacking block 41 is in the first state, the jacking rod jacks out the friction plate 8 from the turntable 12.

[0051] Referring to Figure 1 , Figure 6 and Figure 7, a guide rod 42 is inserted at one end of the ejector block 41 away from the corresponding friction plate 8. The guide rod 42 is horizontally arranged. A limit end 421 is fixed at one end of the guide rod 42 close to the wall of the fixed cylinder 13. A sliding cavity 411 for the limit end 421 to slide horizontally is formed inside the ejector block 41. A first elastic member 422 is sleeved outside the guide rod 42. One end of the first elastic member 422 is fixed to the ejector block 41, and the other end is fixed with a fixing ring 423. The fixing ring 423 is fixed to the outer wall of the guide rod 42. In this embodiment, the first elastic member 422 is a compression spring. A first guiding inclined surface 412 is provided at one end of the ejector block 41 away from the guide rod 42. An installation frame 14 is fixed on the frame 1, and a lifting driving source 141 for driving the guide rod 42 to move up and down is fixed on the installation frame 14. In this embodiment, the lifting driving source 141 is a cylinder.

[0052] Referring to Figure 6 and Figure 7 , when the ejector block 41 disengages from the ejection hole 132, a limiting plate 133 for restricting relative rotation between the ejector block 41 and the ejection hole 132 is fixed on the side wall of the inner peripheral surface of the fixed cylinder 13. A lifting rod 43 is fixed at one end of the guide rod 42 away from the ejector block 41. The lifting rod 43 is vertically arranged. A bearing 431 is embedded at the top end of the lifting rod 43. The lifting rod 43 is fixed to the outer ring of the bearing 431. A connecting rod 432 is fixed to the inner ring of the bearing 431. Each connecting rod 432 is commonly connected to the same connecting frame 44. The output end of the lifting driving source 141 is fixed to the top of the connecting frame 44.

[0053] During feeding, the lifting driving source 141 drives the plurality of lifting rods 43 to move up and down. The lifting rods 43 drive the corresponding guide rods 42 to move up and down, so that the ejector block 41 disengages from the ejection hole 132, thereby facilitating the pushing of the friction plate 8 onto the turntable 12. When the grinding is completed, the lifting driving source 141 drives the guide rod 42 to move up and down so that the ejector block 41 penetrates into the ejection hole 132. At this time, the clamping mechanism 3 is loosened, and the ejector block 41 penetrates out of the ejection hole 132, so as to achieve the purpose of ejecting the friction plate 8 from the turntable 12.

[0054] The implementation principle of the external arc surface grinding device for the block brake friction plate disclosed in the embodiment of the present application is as follows: When using this device, first stack a batch of friction plates 8 to be ground in the material stacking groove 21, and the pushing cylinder 211 pushes the friction plates 8 to move towards the turntable 12 to ensure the feeding of the friction plates 8. Then the feeding cylinder 22 is started. The feeding cylinder 22 drives the receiving plate 221 to rise. The receiving plate 221 lifts the friction plate 8 to be fed in the material stacking groove 21 between the first clamping rod 31 and the second clamping rod 32. Then the third motor 74 is started to drive the rotating gear 73 to rotate. The rotating gear 73 drives the first arc rack 71 and the second arc rack 72 to move relatively closer, and further drives the first clamping rod 31 and the second clamping rod 32 to move relatively closer, so as to complete the clamping of the friction plate 8.

[0055] When the friction plate 8 completes the clamping, the first motor 11 rotates to drive the turntable 12 to rotate. During the rotation of the turntable 12, the friction plate 8 itself rotates around the circumferential surface of the fixed cylinder 13. At the same time, the second motor 53 is started to drive the grinding roller 52 to rotate, and the circumferential surface of the grinding roller 52 contacts the outer arc surface of the friction plate 8, so as to grind the outer arc surface of the friction plate 8.

[0056] When the grinding of the friction plate 8 is completed, the lifting drive source 141 drives the plurality of lifting rods 43 to lift, and the lifting rods 43 drive the corresponding guide rods 42 to lift, so that the ejector block 41 penetrates into the ejection hole 132. At the same time, the third motor 74 is started to drive the rotating gear 73 to rotate, and the rotating gear 73 drives the first arc rack 71 and the second arc rack 72 to move away from each other, thereby driving the first clamping rod 31 and the second clamping rod 32 to move away from each other. The first clamping rod 31 and the second clamping rod 32 release the clamping of the friction plate 8. Under the elastic force of the first elastic member 422, the ejector rod penetrates out of the ejection hole 132 to eject the friction plate 8 out of the turntable 12, so as to facilitate the feeding process of the subsequent friction plate 8. The friction plate 8 ejected from the turntable 12 is finally collected centrally.

[0057] Through the settings of the above feeding mechanism 2, clamping mechanism 3, grinding mechanism 5 and ejecting mechanism 4, the automatic grinding of the friction plate 8 is realized, the grinding efficiency is improved, the labor intensity is reduced, and at the same time, the consistency of the grinding uniformity of each friction plate 8 is improved, and the harm of the debris and dust generated during the grinding process to the human body is effectively reduced.

[0058] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. A grinding device for the outer arc surface of a block brake friction plate, characterized in that: It includes a frame (1), on which a turntable (12) and a first motor (11) for driving the turntable (12) to rotate are provided. A fixed cylinder (13) is provided on the turntable (12). A feeding mechanism (2) for feeding the friction plate (8) into the turntable (12) is provided at the feeding end of the frame (1). A clamping mechanism (3) for clamping the friction plate (8) and an ejecting mechanism (4) for ejecting the friction plate (8) out of the turntable (12) are provided on the fixed cylinder (13). A grinding mechanism (5) for grinding the outer arc surface of the friction plate (8) is provided on the frame (1); The clamping mechanism (3) includes multiple groups of first clamping rods (31) and second clamping rods (32) provided on the outer peripheral surface of the fixed cylinder (13). The first clamping rods (31) and the second clamping rods (32) are slidably connected to the fixed cylinder (13) along the circumferential direction of the fixed cylinder (13). A driving mechanism (7) for driving the first clamping rods (31) and the second clamping rods (32) to move relatively or away from each other is provided on the fixed cylinder (13); The driving mechanism (7) includes a first circular arc rack (71) and a second circular arc rack (72) with opposite tooth surfaces. The first circular arc rack (71) is fixedly connected to the first clamping rod (31), the second circular arc rack (72) is fixedly connected to the second clamping rod (32). A rotating gear (73) is connected between the first circular arc rack (71) and the second circular arc rack (72). A third motor (74) for driving the rotating gear (73) to rotate is provided on the fixed cylinder (13).

2. A grinding device for the outer arc surface of a block brake friction plate according to claim 1, characterized in that: The grinding mechanism (5) includes a fixed frame (51), the fixed frame (51) is provided on the frame (1). A grinding roller (52) is rotatably connected to the fixed frame (51). A second motor (53) for driving the grinding roller (52) to rotate is provided on the fixed frame (51). The circumferential surface of the grinding roller (52) abuts against the outer arc surface of the friction plate (8).

3. A grinding device for the outer arc surface of a block brake friction plate according to claim 1, characterized in that: The ejecting mechanism (4) includes an ejecting block (41) provided on the fixed cylinder (13). An ejecting hole (132) is provided on the circumferential surface of the fixed cylinder (13). The ejecting hole (132) is located between the first clamping rod (31) and the second clamping rod (32). The ejecting block (41) has a first state of passing through the ejecting hole (132) and a second state of not passing through the ejecting hole (132). When the ejecting block (41) is in the first state, the ejecting block (41) ejects the friction plate (8) out of the turntable (12).

4. A grinding device for the outer arc surface of a block brake friction plate according to claim 3, characterized in that: One end of the ejector block (41) away from the corresponding friction plate (8) is provided with a guide rod (42). The guide rod (42) is horizontally arranged. The ejector block (41) is slidably connected to the guide rod (42). A first elastic member (422) is sleeved on the guide rod (42). One end of the first elastic member (422) is fixed to the ejector block (41), and the other end is fixed to the guide rod (42). One end of the ejector block (41) away from the guide rod (42) is provided with a first guide inclined surface (412). A lifting drive source (141) for driving the guide rod (42) to move up and down is provided on the frame (1).

5. The external arc surface grinding device for the friction plate of a block brake according to claim 4, characterized in that: When the ejector block (41) disengages from the ejection hole (132), a limiting plate (133) for restricting relative rotation between the ejector block (41) and the ejection hole (132) is provided on the fixed cylinder (13). The guide rod (42) is connected with a lifting rod (43). A bearing (431) is provided at the top end of the lifting rod (43). The lifting rod (43) is fixed to the outer ring of the bearing (431). A connecting rod (432) is fixed to the inner ring of the bearing (431). Each of the connecting rods (432) is commonly connected to the output end of the same lifting drive source (141).

6. The external arc surface grinding device for the friction plate of a block brake according to claim 1, characterized in that: The feeding mechanism (2) includes a feeding air cylinder (22) provided on the frame (1). A feeding hole (121) for the friction plate (8) to pass through from the bottom of the turntable (12) to the top is provided on the turntable (12). The feeding hole (121) is correspondingly arranged with the output end of the feeding air cylinder (22).

7. The external arc surface grinding device for the friction plate of a block brake according to claim 6, characterized in that: The feeding mechanism (2) further includes a stacking groove (21) provided on the frame (1). The stacking groove (21) is located below the turntable (12). A pushing air cylinder (211) for pushing the friction plate (8) to feed is provided on the stacking groove (21). An avoidance hole (212) for the output end of the feeding air cylinder (22) to lift is provided at one end of the bottom wall of the stacking groove (21) away from the pushing air cylinder (211). An intermittent mechanism (6) for separating the friction plate (8) to be fed and the adjacent friction plate (8) is provided on the stacking groove (21).

8. The external arc surface grinding device for the friction plate of a block brake according to claim 7, characterized in that: The intermittent mechanism (6) includes an intermittent block (61) and a second elastic member (62). An installation groove (213) is provided on the bottom wall of the blanking groove (21). The installation groove (213) is arranged between the friction plate (8) to be loaded and the adjacent friction plate (8). The second elastic member (62) is arranged in the installation groove (213). The intermittent block (61) is arranged at one end of the second elastic member (62) away from the bottom wall of the installation groove (213). A second guiding inclined surface (611) is provided on one side of the top end of the intermittent block (61) facing away from the turntable (12). When the second elastic member (62) is in a natural state, the intermittent block (61) is partially located in the installation groove (213), and the bottom edge of the second guiding inclined surface (611) is flush with the notch edge of the installation groove (213) or is located within the installation groove (213).

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