Miniature vibration polishing machine

Abstract

The utility model relates to the technical field of part machining, in particular to a miniature vibration polishing machine. The polishing device comprises a bottom plate, a vertical plate is fixedly connected to the upper surface of the bottom plate, a moving box is arranged on one side of the vertical plate, an air cylinder is fixedly connected to one side of the moving box, one end of a piston rod of the air cylinder penetrates through the moving box and is fixedly connected with a first wheel frame, a polishing wheel is rotationally connected into the first wheel frame, and a polishing belt is arranged on the outer side of the polishing wheel. A water baffle is arranged at the position, located on the outer side of the polishing belt, above the grinding wheel, second wheel frames are symmetrically arranged above and below the first wheel frame, expanding rollers are rotationally connected into the second wheel frames, and a vibrating mechanism is arranged on the side wall of the vertical plate. After the polishing belt makes contact with a workpiece, the polishing belt vibrates at high frequency relative to the workpiece, the surface of the workpiece can be polished, and in the polishing process, the polishing belt making contact with the workpiece is continuously recycled and replaced with a new polishing belt, so that the surface of the workpiece achieves the mirror surface effect.

Description

Technical Field

[0001] The utility model relates to the technical field of polishing machine production, and specifically, to a micro vibration polishing machine. Background Technique

[0002] A vibration polishing machine is a machine used for grinding and polishing the surface of workpieces. One device for vibration polishing the circumferential side surface of shaft parts has a working principle that the shaft parts are placed on a vibration platform, and the roughness of the circumferential side surface of the shaft parts is removed by using the vibration force. It can remove the defects on the material surface and improve its smoothness. At the same time, it can also improve its surface morphology and structure and enhance the corrosion resistance.

[0003] For example, the vibration polishing machine involved in CN116276611A includes a frame and a vibration member located inside the frame. A driving motor one and a driving motor two are fixed on the frame and a rotating shaft is vertically arranged. A turntable is fixedly connected to the lower end of the rotating shaft. A plurality of mounting rods that can all rotate and the lower ends of which are located inside the vibration member are vertically arranged on the turntable. A transmission structure one is provided between the output shaft of the driving motor one and the rotating shaft. A transmission member is axially fixed on the rotating shaft. A transmission structure two is provided between the output shaft of the driving motor two and the transmission member. A synchronous structure that can drive each mounting rod to rotate when the transmission member rotates is provided between the transmission member and the mounting rod, which has the advantages of high polishing efficiency, good polishing effect, and simple structure.

[0004] However, most of the existing vibration polishing machines adopt a design method with a wide grinding wheel and a heavy machine body, and the installation and disassembly are relatively cumbersome. In order to conveniently install the vibration polishing machine on one side of a lathe and directly grind and polish the circumferential side surface of small shaft parts clamped and fixed on the lathe, shorten the interval time between the cutting processing and the polishing processing of the shaft parts, make the production efficiency higher, and save the production cost, we propose a micro vibration polishing machine. Content of the Utility Model

[0005] The purpose of the utility model is to provide a micro vibration polishing machine to solve the problems raised in the above background technique.

[0006] To achieve the above object, one of the objects of the present utility model is to provide a micro vibration polishing machine, which includes a bottom plate. A vertical plate is fixedly connected to the upper surface of the bottom plate. A moving box is arranged on one side of the vertical plate. A cylinder is fixedly connected to one side of the moving box. One end of the piston rod of the cylinder penetrates through the moving box and is fixedly connected to a first wheel frame. A grinding wheel is rotatably connected inside the first wheel frame. A polishing belt is arranged outside the grinding wheel. A water baffle is arranged above the grinding wheel at a position outside the polishing belt. Second wheel frames are symmetrically arranged above and below the first wheel frame. A spreading roller is rotatably connected inside the second wheel frame. A vibration mechanism is arranged on the side wall of the vertical plate. The vibration mechanism is used to drive the moving box to reciprocate. A tensioning mechanism is arranged on one side of the first wheel frame close to the moving box. A folding mechanism is arranged between one side of the first wheel frame and the water baffle. When the moving box reciprocates, the tensioning mechanism drives the two second wheel frames to move vertically away from the first wheel frame, so that the two spreading rollers are in extrusion cooperation with the polishing belt to stretch and tension the polishing belt. The folding mechanism adjusts the water baffle to the unfolded state. A locking mechanism is arranged on the side of the first wheel frame away from the folding mechanism. When the two spreading rollers stretch and tension the polishing belt, the locking mechanism limits the positions of the two second wheel frames, and when the moving box stops moving, the locking mechanism automatically releases the limit on the second wheel frames. A winding and unwinding mechanism is arranged between the polishing belt and the vertical plate. When the polishing belt is in the tensioned state, the polishing belt is in extrusion cooperation with the outer wall of the grinding wheel. The winding and unwinding mechanism changes the position of the extrusion cooperation between the polishing belt and the outer wall of the grinding wheel.

[0007] As a further improvement of this technical solution, the vibration mechanism includes a motor fixedly connected to the side of the vertical plate away from the moving box. An eccentric wheel is eccentrically fixedly connected to the output shaft of the motor. A crank connecting rod is rotatably connected to the outer wall of the eccentric wheel. One end of the crank connecting rod penetrates through the side wall of the vertical plate and is rotatably connected to the moving box. Two guide rods are fixedly connected to the side wall of the vertical plate. The moving box is slidably sleeved outside the guide rods.

[0008] As a further improvement of this technical solution, the tensioning mechanism includes a plurality of positioning columns fixedly connected to the top and bottom of the first wheel frame. The positioning columns are arranged vertically. The two second wheel frames are respectively slidably sleeved outside the plurality of positioning columns. A first spring is sleeved outside the positioning columns. Two ends of the first spring are respectively fixedly connected to the second wheel frame and the first wheel frame. A right-angle plate is fixedly connected to the side of the second wheel frame close to the moving box. An elliptical wheel is arranged between the two right-angle plates. A driving component is arranged between the elliptical wheel and the moving box. When the moving box reciprocates, the driving component drives the elliptical wheel to rotate.

[0009] As a further improvement of the present technical solution, the driving assembly includes a first gear fixedly connected to one side of the elliptical wheel. The first gear is rotatably connected to one side of the moving box. A cross plate is fixedly connected to the side wall of the vertical plate. A number of tooth blocks are linearly arrayed and hinged on the upper surface of the cross plate. The upper end of one of the tooth blocks is located inside the tooth groove of the first gear. One side of the tooth block is in pressing fit with a baffle plate. The lower end of the baffle plate is fixedly connected to the cross plate. A tension spring is fixedly connected between the tooth block and the upper surface of the cross plate.

[0010] As a further improvement of the present technical solution, on the side of the elliptical wheel away from the moving box, activity slots are symmetrically opened. A wedge block is slidably connected to the inner wall of the activity slot. A second spring is fixedly connected to the side of each of the two wedge blocks close to each other. One end of the second spring is fixedly connected to the inner wall of the activity slot. The side of the wedge block outside the activity slot is a bevel surface.

[0011] As a further improvement of the present technical solution, the locking mechanism includes a sleeve block fixedly connected to one side of the second wheel frame. A clamping rod is slidably connected to the side of the first wheel frame close to the sleeve block. Elastic metal sheets are symmetrically fixedly connected to one side of the clamping rod. The ends of the elastic metal sheets away from the clamping rod are fixedly connected to the first wheel frame. When the second wheel frame drives the sleeve block to move vertically away from the first wheel frame, the clamping rod is clamped into the sleeve block.

[0012] As a further improvement of the present technical solution, a pressing plate is fixedly connected to one side of the clamping rod. One end of the pressing plate extends to the position between the elliptical wheel and the first wheel frame. Two abutting rods are fixedly connected to the side of the pressing plate close to the elliptical wheel. When the elliptical wheel drives the two wedge blocks to rotate slowly, when the bevel surface of the wedge block rotates to the position in contact with the abutting rod, the wedge block presses the pressing plate in the direction close to the first wheel frame through the abutting rod.

[0013] As a further improvement of the present technical solution, the folding mechanism includes a rotating plate and a second gear rotatably connected to the side wall of the first wheel frame. A sliding groove is opened on the side wall of the rotating plate. A sliding block is slidably arranged on the inner wall of the sliding groove. The sliding block is fixedly connected to the second wheel frame located above. The end of the rotating plate away from the sliding groove is fixedly connected to an arc-shaped rack. The arc-shaped rack is engaged with the second gear. An extension rod is fixedly connected to the outer wall of the second gear. The upper end of the extension rod is fixedly connected to one side of the water baffle.

[0014] As a further improvement of the present technical solution, the winding and unwinding mechanism includes a winding roller and an unwinding roller rotatably connected to one side of the vertical plate. A power source for driving the winding roller to rotate is installed on the other side of the vertical plate. Both ends of the polishing belt are fixedly connected to the winding roller and the unwinding roller respectively. A first guide roller, a second guide roller and a third guide roller are rotatably connected to one side of the vertical plate. The outer walls of the first guide roller, the second guide roller and the third guide roller are all in pressing fit with the polishing belt.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. In this micro vibration polishing machine, after the polishing belt contacts the workpiece, the polishing belt vibrates at a high frequency relative to the workpiece, enabling the surface of the workpiece to be polished. During the polishing process, the polishing belt that has contacted the workpiece is continuously recycled and replaced with a new one, so that the surface of the workpiece reaches a mirror effect and the polishing quality is improved.

[0017] 2. In this micro vibration polishing machine, when the polishing belt polishes the surface of the workpiece, the polishing belt is in a taut state, thus enabling fine polishing of the surface of the workpiece. After the polishing work is completed, the polishing belt can automatically switch to a relaxed state, avoiding the shortening of the service life caused by the polishing belt being in a taut state for a long time.

[0018] 3. In this micro vibration polishing machine, when water is sprayed to cool the contact position between the polishing belt and the workpiece, the water baffle can block the water from splashing onto the electrical equipment on the vertical plate, avoiding the failure of the electrical equipment due to water ingress. When the polishing work is completed, the water baffle automatically folds, reducing the possibility of dust adhering to the water-blocking side of the water baffle. At the same time, the folded water baffle plays a protective role for the polishing belt, reducing the possibility of the polishing belt being damaged by friction and collision with hard objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is one of the overall structural schematic diagrams of the present utility model;

[0020] Figure 2 is the second overall structural schematic diagram of the present utility model;

[0021] Figure 3 is the structural schematic diagram of the vibration mechanism of the present utility model;

[0022] Figure 4 is the structural schematic diagram of the tensioning mechanism of the present utility model;

[0023] Figure 5 is one of the structural schematic diagrams of the folding mechanism of the present utility model;

[0024] Figure 6 is the second structural schematic diagram of the folding mechanism of the present utility model;

[0025] Figure 7 is the structural schematic diagram of the locking mechanism of the present utility model;

[0026] Figure 8 is the structural schematic diagram of the pressing plate and the abutting rod of the present utility model;

[0027] Figure 9 is the structural schematic diagram of the drive assembly of the present utility model;

[0028] Figure 10 For the present utility model Figure 9 the enlarged view of the structure at position A;

[0029] Figure 11 is the schematic structural view of the rewinding and unreeling mechanism of the present utility model.

[0030] The meanings of each label in the figure are as follows:

[0031] 1. Vertical plate; 2. Moving box; 3. First wheel frame; 31. Water baffle; 32. Second wheel frame; 4. Polishing belt;

[0032] 5. Vibration mechanism; 51. Motor; 52. Eccentric wheel; 53. Crank connecting rod; 54. Guide rod;

[0033] 6. Tensioning mechanism; 61. Positioning column; 63. First spring; 64. Right-angle plate; 65. Oval wheel; 66. Driving assembly; 661. First gear; 662. Cross plate; 663. Tooth block; 664. Baffle; 665. Tension spring; 67. Moving slot; 68. Wedge block; 69. Second spring;

[0034] 7. Folding mechanism; 71. Rotating plate; 72. Sliding slot; 73. Second gear; 74. Extension rod; 75. Arc-shaped rack;

[0035] 8. Rewinding and unreeling mechanism; 81. Rewinding roller; 82. Unreeling roller; 83. First guide roller; 84. Second guide roller; 85. Third guide roller;

[0036] 9. Locking mechanism; 91. Sleeve block; 92. Clamping rod; 93. Elastic metal sheet; 94. Pressing plate; 95. Bracing rod. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0038] Embodiment 1

[0039] Please refer to Figures 1-2As shown in the figure, a micro vibration polishing machine is provided, which includes a bottom plate installed on one side of the workpiece to be polished. A vertical plate 1 is fixedly connected to the upper surface of the bottom plate. A moving box 2 is arranged on one side of the vertical plate 1. A cylinder is fixedly connected to one side of the moving box 2. One end of the piston rod of the cylinder penetrates through the moving box 2 and is fixedly connected to a first wheel frame 3. A grinding wheel is rotatably connected inside the first wheel frame 3. A polishing belt 4 is arranged outside the grinding wheel. By extending the piston rod of the cylinder, the first wheel frame 3 is driven to horizontally move away from the moving box 2. After the grinding wheel pushes the polishing belt 4 outside it to contact the workpiece, it is ready to polish the workpiece through the polishing belt 4. By making the polishing belt 4 vibrate at a high frequency relative to the workpiece, the surface of the workpiece can be polished to a smooth state.

[0040] To make the polishing belt 4 vibrate at a high frequency relative to the workpiece and polish the surface of the workpiece, a vibration mechanism 5 is arranged on the side wall of the vertical plate 1. The vibration mechanism 5 is used to drive the moving box 2 to reciprocate, achieving the effect of making the moving box 2 vibrate at a high frequency. Second wheel frames 32 are symmetrically arranged above and below the first wheel frame 3. A spreading roller is rotatably connected inside the second wheel frame 32. When the moving box 2 vibrates at a high frequency, it drives the first wheel frame 3, the grinding wheel, and the spreading roller to vibrate synchronously. A tensioning mechanism 6 is arranged on the side of the first wheel frame 3 close to the moving box 2. When the moving box 2 reciprocates, the tensioning mechanism 6 drives the two second wheel frames 32 to vertically move away from the first wheel frame 3, so that the two spreading rollers are in extrusion cooperation with the polishing belt 4, stretching and tensioning the polishing belt 4. The tensioned polishing belt 4 is also in extrusion cooperation with the grinding wheel, so that the first wheel frame 3, the grinding wheel, and the two spreading rollers can drive the polishing belt 4 to vibrate synchronously. The vibrating polishing belt 4 polishes the surface of the workpiece. A winding and unwinding mechanism 8 is arranged between the polishing belt 4 and the vertical plate 1. When the polishing belt 4 is in a tensioned state, the winding and unwinding mechanism 8 changes the position of the extrusion cooperation between the polishing belt 4 and the outer wall of the grinding wheel, continuously recovers the polishing belt 4 after it contacts the workpiece, and replaces it with a new polishing belt 4, so that the surface of the workpiece reaches a mirror effect.

[0041] To make the moving box 2 vibrate at a high frequency, the structure of the vibration mechanism 5 is refined as follows. Refer to Figure 3, the vibration mechanism 5 includes a motor 51 fixedly connected to the side of the vertical plate 1 away from the moving box 2. An eccentric wheel 52 is fixedly connected eccentrically to the output shaft of the motor 51. A crank connecting rod 53 is rotatably connected to the outer wall of the eccentric wheel 52. One end of the crank connecting rod 53 penetrates through the side wall of the vertical plate 1 and is rotatably connected to the moving box 2. A through groove is formed in the side wall of the vertical plate 1, and the through groove is sleeved on the outside of the crank connecting rod 53. Two guide rods 54 are fixedly connected to the side wall of the vertical plate 1. The moving box 2 is slidably sleeved on the outside of the guide rods 54, so that the moving box 2 can only move horizontally along the outer walls of the two guide rods 54. After the motor 51 is started, its output shaft drives the eccentric wheel 52 to rotate. The eccentric wheel 52 drives the crank connecting rod 53 to swing up and down. When the crank connecting rod 53 swings upward or downward from the horizontal state, the moving box 2 is pulled toward the vertical plate 1. When the crank connecting rod 53 swings toward the horizontal state, the moving box 2 is pushed away from the vertical plate 1, so as to drive the moving box 2 to move horizontally back and forth, achieving the effect of vibrating the moving box 2. The vibration frequency of the moving box 2 is positively correlated with the rotational speed of the output shaft of the motor 51.

[0042] When the moving box 2 vibrates, in order to make the two second wheel frames 32 move vertically away from the first wheel frame 3, the polishing belt 4 is stretched and tightened, so that the tightened polishing belt 4 vibrates synchronously with the moving box 2 to polish the surface of the workpiece. The structure of the tightening mechanism 6 is refined as follows. Refer to Figure 4 , the tightening mechanism 6 includes a plurality of positioning columns 61 fixedly connected to the top and bottom of the first wheel frame 3. The positioning columns 61 are arranged vertically. The two second wheel frames 32 are respectively slidably sleeved on the outside of the plurality of positioning columns 61. A first spring 63 is sleeved on the outside of the positioning columns 61. The two ends of the first spring 63 are respectively fixedly connected to the second wheel frame 32 and the first wheel frame 3. A right-angle plate 64 is fixedly connected to the side of the second wheel frame 32 close to the moving box 2. An elliptical wheel 65 is arranged between the two right-angle plates 64. A driving component 66 is arranged between the elliptical wheel 65 and the moving box 2. When the moving box 2 vibrates, the driving component 66 drives the elliptical wheel 65 to rotate. After the rotating elliptical wheel 65 contacts the two right-angle plates 64, the two right-angle plates 64 are pushed away from the elliptical wheel 65. The right-angle plate 64 drives the second wheel frame 32 to move vertically along the outside of the positioning column 61, and the first spring 63 is elastically stretched, so that the second wheel frame 32 moves vertically away from the first wheel frame 3. When the two points on the curved surface of the elliptical wheel 65 that are farthest apart respectively contact the two right-angle plates 64, the distance between the two second wheel frames 32 reaches the maximum. At this time, the two spreading rollers cooperate with the grinding wheels to tighten the polishing belt 4, so that the polishing belt 4 can vibrate synchronously with the moving box 2 to polish the surface of the workpiece.

[0043] When the moving box 2 vibrates, that is, when the moving box 2 moves horizontally back and forth, in order to make the elliptical wheel 65 rotate and stretch and tighten the polishing belt 4, the structure of the driving component 66 is refined as follows. Refer to Figure 9 and Figure 10, the driving assembly 66 includes a first gear 661 fixedly connected to one side of the elliptical wheel 65. The first gear 661 is rotatably connected to one side of the moving box 2. A cross plate 662 is fixedly connected to the side wall of the vertical plate 1. A plurality of tooth blocks 663 are linearly arrayed and hinged on the upper surface of the cross plate 662. The upper end of one of the tooth blocks 663 is located inside the tooth groove of the first gear 661. One side of the tooth block 663 is in extrusion fit with a baffle 664. The lower end of the baffle 664 is fixedly connected to the cross plate 662. The baffle 664 restricts the tooth block 663 from flipping away from the vertical plate 1. A tension spring 665 is fixedly connected between the tooth block 663 and the upper surface of the cross plate 662. When the moving box 2 moves horizontally back and forth, the cross plate 662 makes a horizontal reciprocating movement relative to the first gear 661. When the moving box 2 moves towards the vertical plate 1, the first gear 661 contacts a plurality of tooth blocks 663 in sequence. The first gear 661 pushes the contacted tooth block 663 to flip towards the vertical plate 1, so that the tooth block 663 cannot mesh with the first gear 661, and thus cannot drive the first gear 661 and the elliptical wheel 65 to rotate. When the tooth block 663 flips, the tension spring 665 is elastically stretched. After the tooth block 663 is separated from the first gear 661, the tension spring 665 rebounds to drive the corresponding tooth block 663 to reset. When the moving box 2 moves away from the vertical plate 1, the baffle 664 restricts the tooth block 663 from flipping away from the vertical plate 1, so that a plurality of tooth blocks 663 mesh with the first gear 661 in sequence. Thus, during the process of the moving box 2 driving the first gear 661 to move horizontally back and forth, the first gear 661 drives the elliptical wheel 65 to rotate unidirectionally, stretching and tensioning the polishing belt 4.

[0044] After the distance between the two second wheel frames 32 reaches the maximum and the two spreading rollers cooperate with the grinding wheel to tension the polishing belt 4, in order to lock the positions of the two second wheel frames 32 and keep the polishing belt 4 in a tensioned state to meet the requirement of vibratory polishing of the workpiece, a locking mechanism 9 is provided on the side of the first wheel frame 3 away from the folding mechanism 7. When the two spreading rollers stretch and tension the polishing belt 4, the locking mechanism 9 limits the positions of the two second wheel frames 32. The structure of the locking mechanism 9 is refined as follows. Refer to Figure 7 and Figure 8, the locking mechanism 9 includes a sleeve block 91 fixedly connected to one side of the second wheel frame 32. A latch rod 92 is slidably connected to the side of the first wheel frame 3 close to the sleeve block 91. Elastic metal sheets 93 are symmetrically and fixedly connected to one side of the latch rod 92. The ends of the elastic metal sheets 93 away from the latch rod 92 are fixedly connected to the first wheel frame 3. A notch is formed on the side of the sleeve block 91 away from the moving box 2. When the second wheel frame 32 drives the sleeve block 91 to move vertically away from the first wheel frame 3, after the sleeve block 91 contacts one end of the latch rod 92, the latch rod 92 is first pushed away from the moving box 2, causing the elastic metal sheets 93 to bend elastically. When the notch moves to the position at the same height as one end of the latch rod 92, the elastic metal sheets 93 rebound and push the latch rod 92 into the interior of the sleeve block 91, thereby restricting the vertical movement of the sleeve block 91 and the second wheel frame 32, achieving the purpose of locking the position of the second wheel frame 32, keeping the polishing belt 4 in a taut state, and meeting the requirement of vibrating and polishing the workpiece.

[0045] A water baffle 31 is provided at the position above the grinding wheel and outside the polishing belt 4. When polishing the workpiece through the polishing belt 4, it is necessary to continuously spray water at the position where the polishing belt 4 contacts the workpiece to cool down the polishing belt 4, prevent the polishing belt 4 and the workpiece from being damaged due to high temperature, and at the same time, the sprayed water can settle the dust generated during polishing, avoiding the dust from damaging the health of the workers. During the process of spraying water for cooling and dust removal, the water baffle 31 can block the water body from splashing onto the electrical equipment installed on the vertical plate 1, reducing the possibility of water ingress failure of the electrical equipment. At the same time, after the splashed water body is blocked by the water baffle 31, it will flow back to the surface of the polishing belt 4 along the inner wall of the water baffle 31, improving the cooling effect of the water body on the polishing belt 4.

[0046] After the polishing work is completed, in order to release the limit on the second wheel carrier 32, so that the second wheel carrier 32 returns to its original position under the resilience of the first spring 63, release the stretching tension of the polishing belt 4 by the spreading roller, and avoid shortening the service life of the polishing belt 4 due to being in a tense state for a long time, the following is a refinement of the remaining components of the tensioning mechanism 6 and the locking mechanism 9. On the side of the elliptical wheel 65 away from the moving box 2, activity slots 67 are symmetrically provided. A wedge block 68 is slidably connected to the inner wall of the activity slot 67. On one side of the two wedge blocks 68 close to each other, a second spring 69 is fixedly connected. One end of the second spring 69 is fixedly connected to the inner wall of the activity slot 67. The side of the wedge block 68 outside the activity slot 67 is an inclined surface. When the elliptical wheel 65 rotates at a high speed, the two wedge blocks 68 move outwards under the action of centrifugal force, causing the second spring 69 to be elastically stretched. One side of the latch 92 is fixedly connected to a pressing plate 94. One end of the pressing plate 94 extends to the position between the elliptical wheel 65 and the first wheel carrier 3. Two abutting rods 95 are fixedly connected to the side of the pressing plate 94 close to the elliptical wheel 65. When the polishing belt 4 grinds the workpiece, the elliptical wheel 65 rotates at a high speed, and the outwardly moved wedge block 68 will not contact the abutting rod 95 during the rotation process. When the polishing work is completed and the motor 51 is turned off, the output shaft of the motor 51 will rotate several weeks under the action of inertia, and the rotation speed will gradually decay until it stops rotating. During the slow rotation of the output shaft of the motor 51, the elliptical wheel 65 will drive the two wedge blocks 68 to rotate slowly. At this time, the centrifugal force that pushes the wedge block 68 outwards cannot resist the resilience tension of the second spring 69. After the second spring 69 rebounds and pulls the wedge block 68 to move inwards and reset, when the elliptical wheel 65 rotates the inclined surface of the wedge block 68 to the position where it contacts the abutting rod 95, the wedge block 68 presses the pressing plate 94 in the direction close to the first wheel carrier 3 through the abutting rod 95, and the pressing plate 94 drives the latch 92 to move synchronously, so as to move the two ends of the latch 92 out of the notch openings of the two sleeve blocks 91 respectively, automatically release the limit on the two second wheel carriers 32, and then release the stretching tension of the polishing belt 4 by the spreading roller, and avoid shortening the service life of the polishing belt 4 due to being in a tense state for a long time.

[0047] When the polishing work is completed, to facilitate the folding and storage of the water baffle 31 and prevent a large amount of dust from adhering to the water-blocking side of the water baffle 31, which may affect the water-blocking effect, a folding mechanism 7 is provided between one side of the first wheel frame 3 and the water baffle 31. When the tensioning mechanism 6 drives the two second wheel frames 32 to move vertically away from the first wheel frame 3, the folding mechanism 7 adjusts the water baffle 31 to the unfolded state. In the unfolded state, the water baffle 31 can prevent water from splashing onto the electrical equipment on the vertical plate 1. When the two second wheel frames 32 move vertically towards the first wheel frame 3 under the resilience of the first spring 63 and complete the reset, the folding mechanism 7 adjusts the water baffle 31 to the folded state. In the folded state, the water baffle 31 closely adheres to the outer wall of the polishing belt 4, reducing the possibility of dust adhering to the water-blocking side of the water baffle 31. At the same time, it plays a protective role for the part of the polishing belt 4 extending outside the bottom plate, reducing the possibility of the polishing belt 4 being damaged by friction and collision with hard objects.

[0048] In order to keep the water baffle 31 in the unfolded state when the polishing belt 4 is in the tensioned state, cooperate with the polishing belt 4 to complete the polishing work on the workpiece, and at the same time, when the polishing belt 4 is in the idle and relaxed state, keep the water baffle 31 in the folded state to play a protective role for the polishing belt 4, the structure of the folding mechanism 7 is refined as follows. Refer to Figure 5 and Figure 6 The folding mechanism 7 includes a rotating plate 71 rotatably connected to the side wall of the first wheel frame 3 and a second gear 73. A sliding groove 72 is formed on the side wall of the rotating plate 71. A slider is slidably arranged on the inner wall of the sliding groove 72, and the slider is fixedly connected to the second wheel frame 32 located above. One end of the rotating plate 71 away from the sliding groove 72 is fixedly connected with an arc-shaped rack 75, and the arc-shaped rack 75 meshes with the second gear 73. An extension rod 74 is fixedly connected to the outer wall of the second gear 73, and the upper end of the extension rod 74 is fixedly connected to one side of the water baffle 31. When the second wheel frame 32 moves vertically towards the first wheel frame 3 to release the tension of the polishing belt 4, the second wheel frame 32 located above drives the slider to slide along the inner wall of the sliding groove 72, causing the rotating plate 71 to drive the arc-shaped rack 75 to rotate. Through the meshing transmission between the arc-shaped rack 75 and the second gear 73, the second gear 73 and the extension rod 74 rotate, and the extension rod 74 drives the water baffle 31 to flip downward. When the second wheel frame 32 moves to the position closest to the first wheel frame 3, the water baffle 31 flips to the folded state. In the folded state, the water baffle 31 closely adheres to the outer wall of the polishing belt 4, playing a protective role for the part of the polishing belt 4 extending outside the bottom plate, reducing the possibility of the polishing belt 4 being damaged by friction and collision with hard objects.

[0049] When the polishing belt 4 vibrates at a high frequency to polish the surface of the workpiece, in order to continuously update the polishing belt 4 in contact with the workpiece and improve the polishing effect on the workpiece, the structure of the winding and unwinding mechanism 8 is refined as follows. Refer to Figure 11, the rewinding and unwinding mechanism 8 includes a winding roller 81 and an unwinding roller 82 rotatably connected to one side of the vertical plate 1. A power source for driving the rotation of the winding roller 81 is installed on the other side of the vertical plate 1. Both ends of the polishing belt 4 are fixedly connected to the winding roller 81 and the unwinding roller 82 respectively. A first guiding roller 83, a second guiding roller 84 and a third guiding roller 85 are rotatably connected to one side of the vertical plate 1. The outer walls of the first guiding roller 83, the second guiding roller 84 and the third guiding roller 85 are all in extrusion fit with the polishing belt 4. When the polishing belt 4 in a taut state vibrates and polishes the workpiece, the winding roller 81 is rotated to wind the polishing belt 4, and under the action of the pulling force, the unwinding roller 82 unwinds the polishing belt 4, so as to continuously update the polishing belt 4 in contact with the workpiece, and cooperate with the high-frequency vibration of the polishing belt 4 to polish the surface of the workpiece to a mirror finish, improving the polishing quality.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A micro vibration polishing machine, comprising a bottom plate, a vertical plate (1) is fixedly connected to the upper surface of the bottom plate, a moving box (2) is arranged on one side of the vertical plate (1), a cylinder is fixedly connected to one side of the moving box (2), one end of the cylinder piston rod passes through the moving box (2) and is fixedly connected to a first wheel frame (3), a grinding wheel is rotatably connected inside the first wheel frame (3), a polishing belt (4) is arranged outside the grinding wheel, a water retaining plate (31) is arranged above the grinding wheel and outside the polishing belt (4), second wheel frames (32) are symmetrically arranged above and below the first wheel frame (3), and a spreading roller is rotatably connected inside the second wheel frame (32), characterized in that: The side wall of the vertical plate (1) is provided with a vibration mechanism (5), and the vibration mechanism (5) is used to drive the moving box (2) to move back and forth. The first wheel frame (3) is provided with a tensioning mechanism (6) on the side close to the moving box (2). A folding mechanism (7) is provided between one side of the first wheel frame (3) and the water baffle (31). When the moving box (2) moves back and forth, the tensioning mechanism (6) drives the two second wheel frames (32) to move vertically in a direction away from the first wheel frame (3), so that the two spreading rollers are pressed and matched with the polishing belt (4), and the polishing belt (4) is stretched and tightened. The folding mechanism (7) adjusts the water baffle (31) to an unfolded state. In the state, a locking mechanism (9) is arranged on the side of the first wheel frame (3) away from the folding mechanism (7); when the two spreading rollers stretch and tighten the polishing belt (4), the locking mechanism (9) limits the position of the two second wheel frames (32); and when the moving box (2) stops moving, the locking mechanism (9) automatically releases the limit on the second wheel frames (32); a reeling and unreeling mechanism (8) is arranged between the polishing belt (4) and the vertical plate (1); when the polishing belt (4) is in a tightened state, the polishing belt (4) is squeezed and matched with the outer wall of the grinding wheel, and the reeling and unreeling mechanism (8) changes the position of the polishing belt (4) and the outer wall of the grinding wheel.

2. The micro vibration polishing machine according to claim 1, characterized in that: The vibration mechanism (5) comprises a motor (51) fixedly connected to a side of the vertical plate (1) away from the moving box (2); an eccentric wheel (52) is eccentrically fixedly connected to the output shaft of the motor (51); a crankshaft connecting rod (53) is rotatably connected to the outer wall of the eccentric wheel (52); one end of the crankshaft connecting rod (53) passes through the side wall of the vertical plate (1) and is rotatably connected to the moving box (2); two guide rods (54) are fixedly connected to the side wall of the vertical plate (1); and the moving box (2) is slidably sleeved on the outer side of the guide rods (54).

3. The micro vibration polishing machine according to claim 1, characterized in that: The tensioning mechanism (6) comprises a plurality of positioning columns (61) fixedly connected to the top and bottom of the first wheel frame (3), the positioning columns (61) being arranged vertically, and two of the second wheel frames (32) being slidably sleeved on the outside of the plurality of positioning columns (61), and a first spring (63) being sleeved on the outside of the positioning columns (61), and two ends of the first spring (63) being fixedly connected to the second wheel frame (32) and the first wheel frame (3), respectively; a right-angle plate (64) is fixedly connected to one side of the second wheel frame (32) close to the moving box (2), an elliptical wheel (65) is arranged between the two right-angle plates (64), and a driving assembly (66) is arranged between the elliptical wheel (65) and the moving box (2), and when the moving box (2) moves back and forth, the driving assembly (66) drives the elliptical wheel (65) to rotate.

4. The micro vibration polishing machine according to claim 3, characterized in that: The driving assembly (66) comprises a first gear (661) fixedly connected to one side of the elliptical wheel (65); the first gear (661) is rotatably connected to one side of the moving box (2); a transverse plate (662) is fixedly connected to the side wall of the vertical plate (1); a plurality of tooth blocks (663) are hingedly connected in a linear array on the upper surface of the transverse plate (662); the upper end of one of the tooth blocks (663) is located inside the tooth groove of the first gear (661); a baffle plate (664) is extruded and fitted on one side of the tooth block (663); the lower end of the baffle plate (664) is fixedly connected to the transverse plate (662); and a tension spring (665) is fixedly connected between the tooth block (663) and the upper surface of the transverse plate (662).

5. The micro vibration polishing machine according to claim 3, characterized in that: A movable groove (67) is symmetrically provided on one side of the elliptical wheel (65) away from the movable box (2); a wedge block (68) is slidably connected to the inner wall of the movable groove (67); two wedge blocks (68) are fixedly connected to a second spring (69) on the sides close to each other; one end of the second spring (69) is fixedly connected to the inner wall of the movable groove (67); and the side of the wedge block (68) outside the movable groove (67) is an inclined surface.

6. The micro vibration polishing machine according to claim 3, characterized in that: The locking mechanism (9) comprises a sleeve block (91) fixedly connected to one side of the second wheel frame (32); a clamping rod (92) is slidably connected to a side of the first wheel frame (3) close to the sleeve block (91); an elastic metal sheet (93) is symmetrically fixedly connected to one side of the clamping rod (92); an end of the elastic metal sheet (93) away from the clamping rod (92) is fixedly connected to the first wheel frame (3); when the second wheel frame (32) drives the sleeve block (91) to move vertically in a direction away from the first wheel frame (3), the clamping rod (92) is clamped into the sleeve block (91).

7. The micro vibration polishing machine according to claim 6, characterized in that: A pressing plate (94) is fixedly connected to one side of the clamping rod (92), one end of the pressing plate (94) extends to a position between the elliptical wheel (65) and the first wheel frame (3), and two push rods (95) are fixedly connected to one side of the pressing plate (94) close to the elliptical wheel (65). When the elliptical wheel (65) drives the two wedge blocks (68) to rotate slowly, when the inclined surface of the wedge block (68) rotates to a position in contact with the push rod (95), the wedge block (68) presses the pressing plate (94) in a direction close to the first wheel frame (3) through the push rod (95).

8. The micro vibration polishing machine according to claim 1, characterized in that: The folding mechanism (7) comprises a rotating plate (71) and a second gear (73) rotatably connected to the side wall of the first wheel frame (3); a sliding groove (72) is provided on the side wall of the rotating plate (71); a slider is slidably provided on the inner wall of the sliding groove (72); the slider is fixedly connected to the second wheel frame (32) located above; an arc-shaped rack (75) is fixedly connected to one end of the rotating plate (71) away from the sliding groove (72); the arc-shaped rack (75) is meshed with the second gear (73); an extension rod (74) is fixedly connected to the outer wall of the second gear (73); the upper end of the extension rod (74) is fixedly connected to one side of the water retaining plate (31).

9. The micro vibration polishing machine according to claim 1, characterized in that: The reeling and unreeling mechanism (8) comprises a reeling roller (81) and an unreeling roller (82) rotatably connected to one side of the vertical plate (1); a power source for driving the reeling roller (81) to rotate is installed on the other side of the vertical plate (1); two ends of the polishing belt (4) are respectively fixedly connected to the reeling roller (81) and the unreeling roller (82); one side of the vertical plate (1) is rotatably connected to a first guide roller (83), a second guide roller (84) and a third guide roller (85); the outer walls of the first guide roller (83), the second guide roller (84) and the third guide roller (85) are all extruded and matched with the polishing belt (4).

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