Automatic abrasive paper changing mechanism

Abstract

The utility model relates to the technical field of polishing machines, in particular to an automatic abrasive paper changing mechanism which comprises a frame body, a bearing plate is arranged on one side of the top of the frame body, connecting bases are installed on the two sides of the frame body, and an optical shaft is fixed between the connecting bases. A lifting frame is arranged below the bearing plate, a lifting module is arranged between the lifting frame and the bearing plate, and the lifting module is used for driving the lifting frame to move up and down; four groups of abrasive paper tearing mechanisms are fixed on the surface of the lifting frame and are used for clamping abrasive paper; the surface of the bearing plate is connected with a transmission mechanism, the transmission mechanism is directly connected with four sets of stock bins arranged at equal intervals, abrasive paper is attached to the surfaces of the stock bins, and the stock bins are driven by the transmission mechanism to rotate. The automatic abrasive paper replacing device solves the problems that abrasive paper attaching and positioning precision is low, and accurate positioning cannot be achieved, and can meet the requirement for automatic abrasive paper replacing of various consumables of different sizes, different hardness and thicknesses, multiple procedures and different technological requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of polishing machines, in particular to an automatic sandpaper changing mechanism. Background Art

[0002] With the development of metal and non-metal polishing such as 3C industry shells, in order to improve production efficiency, polishing machines basically realize one machine with multiple processes and multiple consumables, automatically switching consumables to complete multiple process polishing at one time. Therefore, the corresponding polishing heads need to be replaced with multiple sandpapers regularly.

[0003] At present, the relevant technology of automatic sandpaper changing is not mature and stable enough, and it is basically aimed at the automatic replacement of a single consumable, or relatively regular and uniform consumables. Secondly, the current automatic sandpaper changing has low positioning accuracy and cannot achieve precise positioning. Thirdly, it cannot meet the process requirements of automatic replacement of sandpaper of different sizes, different hardness and thickness, and multiple processes and multiple consumables. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic sandpaper changing mechanism to solve the problem in the above-mentioned background technology that the sandpaper attachment positioning accuracy is low and accurate positioning cannot be achieved, and the problem that the automatic replacement of sandpaper of different sizes, different hardness and thickness, and multiple processes and multiple consumables in the process requirements cannot be met.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic sandpaper changing mechanism, comprising a frame, characterized in that: a bearing plate is arranged on one side of the top of the frame, and connecting seats are installed on both sides of the frame, an optical axis is fixed between the connecting seats, a connecting rod is fixedly connected below the optical axis, the connecting rod is used to fix the sand tearing mechanism, and the bearing plate and the frame are connected through a transmission mechanism; a lifting frame is arranged below the bearing plate, and a lifting module is arranged between the lifting frame and the bearing plate, and the lifting module is used to drive the lifting frame to move up and down; Four groups of sand-tearing mechanisms are fixed on the surface of the lifting frame, which are connected to the frame through an optical axis guide rail and are used for clamping work; a transmission mechanism is connected to the surface of the bearing plate, and four groups of equidistantly arranged silos are provided on one side of the bearing plate, and sandpaper is mounted on the surface of the silo, and the silo is driven to rotate by the transmission mechanism, and the transmission mechanism includes four groups of low backlash reducers and a transmission shaft, and the low backlash reducer is fixedly connected to the surface of the bearing plate by bolts, and the output end of the low backlash reducer is directly connected to the silo.

[0006] Preferably, the transmission mechanism is composed of a plurality of low backlash reducers, a transmission rod, a coupling and a servo motor. The low backlash reducer is directly fixedly connected to the surface of the bearing plate by bolts, and the output end of the low backlash reducer is fixedly connected to the servo motor by a coupling, and the flange of the low backlash reducer is directly fixedly connected to the silo.

[0007] Preferably, the lifting module includes a servo motor, a screw, a feed nut block, a connecting plate and a connecting rod. The servo motor is fixedly connected to the center of the surface of the load-bearing plate through a support seat, and the output end of the servo motor is fixed with a screw through a coupling, and the surface of the screw is threadedly connected with the feed nut block, and the surface of the feed nut block is fixedly connected to the surface of the connecting plate, the surface of the connecting plate is fixed with a connecting rod, and the surface of the connecting rod is fixedly connected to the surface of the lifting frame by bolts.

[0008] Preferably, the sand tearing mechanism is composed of a sand tearing frame, a sand tearing cylinder, a fixed clamping plate, a movable clamping plate, a rubber buffer block, a sand pushing cylinder and a push plate. The sand tearing frame is fixedly connected to the surface of the lifting frame, and the sand tearing cylinder is fixed on the outer wall of one side of the sand tearing frame, and the output end of the sand tearing cylinder extends to the interior of the sand tearing frame and is hinged with two movable movable clamping plates, and the surface of the movable clamping plate is hinged with two fixed clamping plates, and the surface of the fixed clamping plate is fixedly connected to the inner wall of the sand tearing frame by four bolts, and a sand pushing cylinder is fixed in the middle position of the two fixed clamping plates, and a push plate is fixed on the push rod of the sand pushing cylinder, and at the same time, a rubber buffer block for buffering is installed on the surface of the sand tearing frame and below the fixed clamping plate by bolts.

[0009] Preferably, connecting seats are fixedly installed on both sides of the frame, and an optical axis is installed between the connecting seats, and a connecting rod is fixedly connected below the optical axis; a lifting frame is fixed on the connecting rod, and a sand tearing mechanism is fixedly connected above the lifting frame.

[0010] Preferably, the flange of the low backlash reducer is directly connected to the silo, and sandpaper is mounted on the surface of the silo, and the silo is driven by a transmission mechanism to rotate.

[0011] Preferably, it also includes a material pressing cylinder arranged behind the carrying plate, and the material pressing cylinder is used to push the sandpaper inside the silo to move forward.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the automatic sandpaper changing mechanism meets the requirements of high precision and high rigidity during automatic sand changing, and the designed low backlash reducer flange is directly connected to the silo, which can reduce weight and have a simpler structure while meeting high precision; at the same time, by controlling the weight and size of the module and setting a silo structure that can meet the storage of consumables of various sizes and types, the polishing machine can process multiple processes and various consumable processes, and stably and comprehensively realize the automatic sandpaper changing of consumables of various sizes and types; the power of the utility model adopts a high-precision low backlash reducer to meet the requirements of precise position control; and the utility model can save the CT of tearing sandpaper and sticking sandpaper as much as possible through the sand tearing mechanism and can meet the movement safety, and at the same time, a sand pushing cylinder is added to the sand tearing mechanism, which can effectively prevent the risk of sandpaper sticking to the sand tearing clamp, greatly improve the efficiency of sand changing, and thus improve the polishing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional left-view structural schematic diagram of the utility model;

[0014] Figure 2 It is a three-dimensional right-side structural schematic diagram of the utility model;

[0015] Figure 3 It is a three-dimensional left-side structural schematic diagram of the transmission mechanism of the utility model;

[0016] Figure 4 It is an enlarged structural diagram of the lifting mechanism of the utility model;

[0017] Figure 5 It is an enlarged front structural diagram of the transmission mechanism of the utility model;

[0018] Figure 6 It is an enlarged rear view structural diagram of the transmission mechanism of the utility model;

[0019] Figure 7 It is an enlarged structural schematic diagram of the sand tearing mechanism of the utility model.

[0020] In the figure: 1. frame; 2. bearing plate; 3. pressing cylinder; 4. lifting frame; 5. lifting module; 51. first servo motor; 52. screw; 53. feed nut block; 54. connecting plate; 55. connecting rod; 6. sand tearing mechanism; 61. sand tearing frame; 62. sand tearing cylinder; 63. fixed clamping plate; 64. moving clamping plate; 65. rubber buffer block; 66. sand pushing cylinder; 67. pushing plate; 7. silo; 71. sandpaper; 8. transmission mechanism; 81. low backlash reducer; 82. transmission rod; 83. coupling; 84. second servo motor; 91. connecting seat; 92. optical axis. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] The utility model provides an automatic sandpaper changing mechanism. Figure 1 as well as Figure 4 As shown, it includes a frame 1, a carrying plate 2 is arranged on one side of the top of the frame 1, and connecting seats 91 are installed on both sides of the frame 1, an optical axis 92 is fixed between the connecting seats 91, and a connecting rod 55 is fixedly connected below the optical axis 92, and the connecting rod 55 is used to fix and connect the sand tearing mechanism 6, and the carrying plate 2 and the frame 1 are connected through a transmission mechanism 8; a lifting frame 4 is arranged below the carrying plate 2, and the lifting frame 4 and the carrying plate 2 are provided with a lifting module 5, and the lifting module 5 is used to drive the lifting frame 4 to move up and down; four groups of sand tearing mechanisms 6 are fixed on the surface of the lifting frame 4 The sand-tearing mechanism is connected to the frame 1 through the optical axis guide rail 9, and the sand-tearing mechanism 6 is used for clamping work; the surface of the bearing plate 2 is connected with a transmission mechanism 8, and one side of the bearing plate 2 is provided with four groups of silos 7 arranged at equal intervals, and the surface of the silo 7 is mounted with sandpaper 71, and the silo 7 is driven by the transmission mechanism 8 to rotate. At the same time, the transmission mechanism 8 includes four groups of low backlash reducers 81 and a transmission shaft 82. The low backlash reducer 81 is fixedly connected to the surface of the bearing plate 2 by bolts, and the output end of the low backlash reducer 81 is directly connected to the silo 7.

[0023] Furthermore, if Figure 2 as well as Figure 6 As shown, the transmission mechanism 8 is composed of a plurality of low backlash reducers 81, a transmission rod 82, a coupling 83 and a second servo motor 84. The low backlash reducer 81 is directly fixedly connected to the surface of the carrier plate 2 by bolts, and the output end of the low backlash reducer 81 is fixedly connected to the second servo motor 84 by a coupling, and the flange of the low backlash reducer 81 is directly fixedly connected to the silo 7.

[0024] Furthermore, if Figure 3 as well as Figure 4 As shown, the lifting module 5 includes a first servo motor 51, a screw rod 52, a feed nut block 53, a connecting plate 54 and a connecting rod 55. The first servo motor 51 is fixedly connected to the central part of the surface of the bearing plate 2 through a support seat, and the output end of the first servo motor 51 is fixed with the screw rod 52 through a coupling, and the surface of the screw rod 52 is threadedly connected with the feed nut block 53, and the surface of the feed nut block 53 is fixedly connected to the surface of the connecting plate 54, and the surface of the connecting plate 54 is fixed with the connecting rod 55, and the surface of the connecting rod 55 is fixedly connected to the surface of the lifting frame 4 by bolts.

[0025] During implementation, the sand-tearing cylinder 62 pushes the movable clamping plate 64 to rotate around the fixed clamping plate 63, and then the fixed clamping plate 63 and the movable clamping plate 64 clamp the sandpaper 71 to tear off the sandpaper 71 on the surface of the silo 7.

[0026] Furthermore, if Figure 7 As shown, the sand tearing mechanism 6 is composed of a sand tearing frame 61, a sand tearing cylinder 62, a fixed splint 63, a movable splint 64, a rubber buffer block 65, a sand pushing cylinder 66 and a push plate 67. The sand tearing frame 61 is fixedly connected to the surface of the lifting frame 4, and the sand tearing cylinder 62 is fixed on the outer wall of one side of the sand tearing frame 61, and the output end of the sand tearing cylinder 62 extends to the inside of the sand tearing frame 61 and is hinged with two movable movable splints 64, and the surface of the movable splint 64 is hinged with two fixed splints 63, and the surface of the fixed splint 63 is fixedly connected to the inner wall of the sand tearing frame 61 by four bolts, and a sand pushing cylinder 66 is fixed in the middle position of the two fixed splints 63, and a push plate 67 is fixed on the push rod of the sand pushing cylinder 66, and at the same time, a rubber buffer block 65 for buffering is installed on the surface of the sand tearing frame 61 and below the fixed splint 63 by bolts.

[0027] Furthermore, if Figure 3 as well as Figure 4 As shown, connecting seats 91 are fixedly installed on both sides of the frame 1, and an optical axis 92 is installed between the connecting seats 91, and a connecting rod 55 is fixedly connected below the optical axis 92; a lifting frame 4 is fixed on the connecting rod 55, and a sand tearing mechanism 6 is fixedly connected above the lifting frame 4.

[0028] Furthermore, if Figure 5 as well as Figure 6 As shown, the flange of the low backlash reducer 81 is directly connected to the silo 7, and the surface of the silo 7 is mounted with sandpaper 71, and the silo 7 is driven by the transmission mechanism 8 to rotate.

[0029] Furthermore, if Figure 5 as well as Figure 6 As shown, it also includes a material pressing cylinder 3 arranged behind the carrying plate 2, and the material pressing cylinder 3 is used to push the sandpaper 71 inside the silo 7 to move forward.

[0030] The utility model meets the requirements of high precision and high rigidity during automatic sand changing through a novel design structure, wherein the designed low backlash reducer flange is directly connected to the silo, which can reduce weight and have a simpler structure while meeting high precision; at the same time, by controlling the weight and size of the module and setting a silo structure that can meet the storage of consumables of various sizes and types, the polishing machine can process multiple processes and various consumable processes, and stably and comprehensively realize the automatic sandpaper changing of consumables of various sizes and types; the power of the utility model adopts a high-precision low backlash reducer to meet the requirements of precise position control; and the utility model can save as much as possible the CT of tearing sandpaper and sticking sandpaper through the sand tearing mechanism and can meet the movement safety, and at the same time, a sand pushing cylinder is added to the sand tearing mechanism, which can effectively prevent the risk of sandpaper sticking to the sand tearing clamp, greatly improve the efficiency of sand changing, and thus improve the polishing efficiency.

[0031] Working principle: When in use, the lifting frame 4 is moved up and down by the lifting module 5. When the lifting module 5 is implemented, the first servo motor 51 drives the screw rod 52 to rotate. Since the feed nut block 53 is threadedly connected to the screw rod 52, the feed nut block 53 will drive the lifting frame 4 to drive the sand tearing mechanism 6 to move up and down with the cooperation of the optical axis 92. After the sand tearing mechanism 6 moves, the sandpaper 71 will be replaced. When the sand tearing mechanism 6 is implemented, the sand tearing cylinder 62 drives the movable clamping plate 64 to rotate around the fixed clamping plate 63, and then the fixed clamping plate 63 and the movable clamping plate 64 are used to clamp the sandpaper, and the sandpaper 71 on the surface of the silo 7 is torn off. Then the sand pushing cylinder 66 will extend forward to drive the push plate 67 to move forward, thereby further preventing the risk of the sandpaper 71 sticking to the clamping plate when peeling.

[0032] When the automatic sandpaper changing mechanism is in use, the hopper 7 is rotated through the transmission mechanism 8. When the transmission mechanism 8 is implemented, the transmission rod 82 is driven to rotate by the low backlash reducer 81. Because the low backlash reducer 81 is connected to the transmission rod 82 through a coupling 83, only a second servo motor 84 is needed to drive the first low backlash reducer 81 to rotate, so as to transmit the power to the subsequent reducers step by step, thereby realizing the synchronous rotation of the four hoppers 7.

[0033] The utility model meets the requirements of high precision and high rigidity during automatic sand changing through a novel design structure, wherein the designed low backlash reducer flange is directly connected to the silo, which can reduce weight and have a simpler structure while meeting high precision; at the same time, by controlling the weight and size of the module and setting a silo structure that can meet the storage of consumables of various sizes and types, the polishing machine can process multiple processes and various consumable processes, and stably and comprehensively realize the automatic sandpaper changing of consumables of various sizes and types; the power of the utility model adopts a high-precision low backlash reducer to meet the requirements of precise position control; and the utility model can save as much as possible the CT of tearing sandpaper and sticking sandpaper through the sand tearing mechanism and can meet the movement safety, and at the same time, a sand pushing cylinder is added to the sand tearing mechanism, which can effectively prevent the risk of sandpaper sticking to the sand tearing clamp, greatly improve the efficiency of sand changing, and thus improve the polishing efficiency.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. An automatic sandpaper changing mechanism, comprising a frame (1), characterized in that: A bearing plate (2) is arranged on one side of the top of the frame (1), and connecting seats (91) are installed on both sides of the frame (1); an optical axis (92) is fixed between the connecting seats (91); a connecting rod (55) is fixedly connected below the optical axis (92); the connecting rod (55) is used to be fixedly connected to a sand tearing mechanism (6); and the bearing plate (2) and the frame (1) are connected via a transmission mechanism (8); a lifting frame (4) is arranged below the bearing plate (2), and a lifting module (5) is arranged between the lifting frame (4) and the bearing plate (2); the lifting module (5) is used to drive the lifting frame (4) to move up and down; four groups of sand tearing mechanisms ( 6), the sand-tearing mechanism is connected to the frame (1) through an optical axis guide rail (9), and the sand-tearing mechanism (6) is used for clamping work; the surface of the carrier plate (2) is connected to a transmission mechanism (8), and one side of the carrier plate (2) is provided with four groups of silos (7) arranged at equal intervals, and the surface of the silo (7) is mounted with sandpaper (71), and the silo (7) is driven by the transmission mechanism (8) to rotate, and the transmission mechanism (8) includes four groups of low backlash reducers (81) and a transmission rod (82), and the low backlash reducer (81) is fixedly connected to the surface of the carrier plate (2) by bolts, and the output end of the low backlash reducer (81) is directly connected to the silo (7).

2. The automatic sandpaper changing mechanism according to claim 1, characterized in that: The transmission mechanism (8) is composed of a plurality of low backlash reducers (81), a transmission rod (82), a coupling (83) and a second servo motor (84); the low backlash reducer (81) is directly fixedly connected to the surface of the bearing plate (2) by bolts, and the output end of the low backlash reducer (81) is fixedly connected to the second servo motor (84) by the coupling; the flange of the low backlash reducer (81) is directly fixedly connected to the silo (7).

3. The automatic sandpaper changing mechanism according to claim 1, characterized in that: The lifting module (5) comprises a first servo motor (51), a screw rod (52), a feed nut block (53), a connecting plate (54) and a connecting rod (55); the first servo motor (51) is fixedly connected to the central part of the surface of the bearing plate (2) through a support seat, and the output end of the first servo motor (51) is fixed with a screw rod (52) through a coupling, and the surface of the screw rod (52) is threadedly connected with the feed nut block (53), and the surface of the feed nut block (53) is fixedly connected to the surface of the connecting plate (54), and the surface of the connecting plate (54) is fixedly connected with the connecting rod (55), and the surface of the connecting rod (55) is fixedly connected to the surface of the lifting frame (4) through bolts.

4. The automatic sandpaper changing mechanism according to claim 1, characterized in that: The sand tearing mechanism (6) is composed of a sand tearing frame (61), a sand tearing cylinder (62), a fixed clamping plate (63), a movable clamping plate (64), a rubber buffer block (65), a sand pushing cylinder (66) and a pushing plate (67). The sand tearing frame (61) is fixedly connected to the surface of the lifting frame (4), and the sand tearing cylinder (62) is fixed on the outer wall of one side of the sand tearing frame (61), and the output end of the sand tearing cylinder (62) extends to the inside of the sand tearing frame (61) and is hinged with two movable movable clamping plates. (64), and the surface of the movable clamping plate (64) is hinged with two fixed clamping plates (63), and the surface of the fixed clamping plate (63) is fixedly connected to the inner wall of the sand tearing frame (61) through four bolts, and a sand pushing cylinder (66) is fixed in the middle position of the two fixed clamping plates (63), and a push plate (67) is fixed on the push rod of the sand pushing cylinder (66), and at the same time, a rubber buffer block (65) for buffering is installed on the surface of the sand tearing frame (61) and located below the fixed clamping plate (63) through bolts.

5. The automatic sandpaper changing mechanism according to claim 1, characterized in that: Connecting seats (91) are fixedly installed on both sides of the frame body (1), an optical axis (92) is installed between the connecting seats (91), and a connecting rod (55) is fixedly connected below the optical axis (92); a lifting frame (4) is fixed on the connecting rod (55), and a sand tearing mechanism (6) is fixedly connected above the lifting frame (4).

6. The automatic sandpaper changing mechanism according to claim 2, characterized in that: The flange of the low backlash reducer (81) is directly connected to the silo (7), and the surface of the silo (7) is mounted with sandpaper (71), and the silo (7) is driven by the transmission mechanism (8) to rotate.

7. The automatic sandpaper changing mechanism according to claim 6, characterized in that: It also comprises a material pressing cylinder (3) arranged behind the carrying plate (2), and the material pressing cylinder (3) is used to push the sandpaper (71) inside the material bin (7) to move forward.

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