Belt tightening mechanism of polishing machine

Abstract

The utility model relates to the technical field of polishing machines, in particular to a belt tightening mechanism of a polishing machine, which comprises a polishing box, two polishing rollers are rotatably connected in the polishing box, one end of each polishing roller penetrates through the side wall of the polishing box and is fixedly connected with a rotating wheel shaft, and two driven wheel shafts are arranged below the rotating wheel shaft. One ends of the two driven wheel shafts are rotationally connected with the side wall of the polishing box, the surfaces of the driven wheel shafts and the surfaces of the rotating wheel shafts are sleeved with belts in a sliding mode, the side wall of the polishing box is fixedly connected with a fixing plate, the fixing plate is located below the driven wheel shafts, and the interior of the fixing plate is in threaded connection with a screw frame. The screw frame moves upwards through threads and drives the tensioning cylinder on the mounting base to move at the same time, and when the surface of the tensioning cylinder abuts against the surface of the transmission belt, the tightness degree of the transmission belt is adjusted through different moving distances of the screw frame.

Description

Technical Field

[0001] The utility model relates to the technical field of polishing machines, in particular to a belt tensioning mechanism for a polishing machine. Background Art

[0002] In the process of processing daily hardware parts, some parts often need to be polished. Polishing is to process the surface of the workpiece to make it highly smooth. The traditional polishing machine is composed of a machine base, a motor and a polishing wheel.

[0003] The motors of most polishing machines drive the polishing wheel to rotate through belt transmission. After long-term use, the belt will become loose, resulting in reduced stability during the rotation of the belt. Therefore, the utility model provides a polishing machine belt tensioning mechanism. Utility Model Content

[0004] The utility model aims to solve the problem that most motors of polishing machines in the prior art drive the polishing wheel to rotate through belt transmission, and the belt will become loose after long-term use, resulting in reduced stability during the rotation of the belt. A polishing machine belt tensioning mechanism is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a polishing machine belt tensioning mechanism, including a polishing box, two grinding rollers are rotatably connected inside the polishing box, and one end of the grinding roller passes through the side wall of the polishing box and is fixedly connected to a rotating wheel axle, two driven wheel axles are arranged below the rotating wheel axle, one end of the two driven wheel axles are rotatably connected to the side wall of the polishing box, and a belt is slidingly sleeved on the surface of the driven wheel axle and the rotating wheel axle, the side wall of the polishing box is fixedly connected to a fixing plate, the fixing plate is located below the driven wheel axle, and the internal thread of the fixing plate is connected to a screw rack, the upper end of the screw rack is rotatably connected to a mounting seat, and the surface of the mounting seat is rotatably connected to a tensioning cylinder, and the surface of the tensioning cylinder abuts against the surface of the transmission belt.

[0006] Preferably, sliding rods are provided on both sides of the screw rod frame, the sliding rods are slidably connected to the inside of the fixing plate, and the upper ends of the sliding rods are fixedly connected to the lower surface of the mounting seat.

[0007] Preferably, a motor is mounted on the surface of one of the rotating wheel shafts, a fixing frame is fixedly connected to the surface of the motor, and a leg of the fixing frame is fixedly connected to the side wall of the polishing box.

[0008] Preferably, the side wall of the polishing box is fixedly connected with four support columns, and one end of the four support columns is fixedly connected with a detachable protective plate by bolts.

[0009] Preferably, a plurality of air holes are provided on the surface of the protective plate.

[0010] In summary, this application includes the following beneficial technical effects:

[0011] 1. In the utility model, by rotating the screw frame, the screw frame moves upward with the help of the thread, and at the same time drives the tensioning cylinder on the mounting seat to move. When the surface of the tensioning cylinder abuts against the surface of the transmission belt, the distance moved by the screw frame is different, thereby adjusting the tightness of the transmission belt.

[0012] 2. In the utility model, the protective plate can be used to protect the motor and other components to avoid damage and reduce maintenance costs. At the same time, the air holes on the protective plate can make the air flow more smoothly and enhance the heat dissipation of the motor when it is working. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is a structural schematic diagram of the rotating wheel shaft assembly and the driven wheel shaft assembly of the utility model;

[0015] Figure 3 For this utility model Figure 2 Enlarged view of point A.

[0016] Legend: 1. Polishing box; 2. Grinding roller; 3. Rotating axle; 4. Transmission belt; 5. Driven axle; 6. Fixed plate; 7. Screw rack; 8. Mounting seat; 9. Tensioning cylinder; 10. Sliding rod; 11. Motor; 12. Fixed rack; 13. Support column; 14. Protective plate; 15. Air vent. DETAILED DESCRIPTION

[0017] Reference Figure 1-3As shown, the utility model provides a technical solution: a polishing machine belt tensioning mechanism, comprising a polishing box 1, two grinding rollers 2 are rotatably connected inside the polishing box 1, and one end of the grinding roller 2 passes through the side wall of the polishing box 1 and is fixedly connected to a rotating wheel shaft 3, two driven wheel shafts 5 are arranged below the rotating wheel shaft 3, one end of the two driven wheel shafts 5 is rotatably connected to the side wall of the polishing box 1, and a belt is slidingly sleeved on the surface of the driven wheel shaft 5 and the rotating wheel shaft 3, the side wall of the polishing box 1 is fixedly connected to a fixing plate 6, and the fixing plate 6 is located below the driven wheel shaft 5, The internal thread of the fixing plate 6 is connected to a screw frame 7, and the upper end of the screw frame 7 is rotatably connected to a mounting seat 8, and the surface of the mounting seat 8 is rotatably connected to a tensioning cylinder 9, and the surface of the tensioning cylinder 9 abuts against the surface of the transmission belt 4. When the tightness of the transmission belt needs to be adjusted, the screw frame 7 can be rotated, and the screw frame 7 moves upward with the help of the thread, and at the same time drives the tensioning cylinder 9 on the mounting seat 8 to move. When the surface of the tensioning cylinder 9 abuts against the surface of the transmission belt 4, the tightness of the transmission belt 4 is adjusted by the different moving distances of the screw frame 7.

[0018] Reference Figure 2 and Figure 3 As shown, in the present embodiment: sliding rods 10 are arranged on both sides of the screw frame 7, the sliding rods 10 are slidably connected to the inside of the fixed plate 6, and the upper ends of the sliding rods 10 are fixedly connected to the lower surface of the mounting seat 8. When the screw frame 7 pushes the mounting seat 8 to move by means of threads, the sliding rods 10 on both sides are driven to move at the same time. The mounting seat 8 is limited by the sliding rods 10 to enhance the stability of the mounting seat 8 during movement. A motor 11 is installed on the surface of one of the rotating wheel axles 3, and a fixing frame 12 is fixedly connected to the surface of the motor 11. The legs of the fixing frame 12 are fixedly connected to the side walls of the polishing box 1. By setting the motor 11, the rotating wheel axle 3 can be driven to rotate by the motor 11, thereby driving the transmission belt 4 to rotate.

[0019] Reference Figure 1 and Figure 2 As shown, specifically, the side wall of the polishing box 1 is fixedly connected with four support columns 13, and one end of the four support columns 13 is fixedly connected with a detachable protective plate 14 by bolts. By setting the protective plate 14, the motor 11 and other components can be protected to avoid damage and reduce maintenance costs. A plurality of air holes 15 are opened on the surface of the protective plate 14. By setting the air holes 15, air can be more circulated, thereby enhancing the heat dissipation of the motor 11 when working.

[0020] Working principle: when the tightness of the transmission belt needs to be adjusted, the screw frame 7 can be rotated, and the screw frame 7 moves upward with the help of the thread, and at the same time drives the tensioning cylinder 9 on the mounting seat 8 to move. When the surface of the tensioning cylinder 9 abuts against the surface of the transmission belt 4, the tightness of the transmission belt 4 is adjusted by the different distances moved by the screw frame 7. By setting a protective plate 14, the motor 11 and other components can be protected to avoid damage and reduce maintenance costs. At the same time, the air holes 15 on the protective plate 14 can make the air more circulated and enhance the heat dissipation of the motor 11 when it is working.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

Claims

1. A polishing machine belt tensioning mechanism, comprising a polishing box (1), characterized in that: The polishing box (1) is internally rotatably connected to two grinding rollers (2), and one end of the grinding roller (2) passes through the side wall of the polishing box (1) and is fixedly connected to a rotating wheel shaft (3). Two driven wheel shafts (5) are arranged below the rotating wheel shaft (3). One end of the two driven wheel shafts (5) is rotatably connected to the side wall of the polishing box (1), and a belt is provided on the surface sliding sleeve of the driven wheel shaft (5) and the rotating wheel shaft (3). The side wall of the polishing box (1) is fixedly connected to a fixing plate (6), and the fixing plate (6) is located below the driven wheel shaft (5). The fixing plate (6) is internally threadedly connected to a screw rack (7). The upper end of the screw rack (7) is rotatably connected to a mounting seat (8), and the surface of the mounting seat (8) is rotatably connected to a tensioning cylinder (9), and the surface of the tensioning cylinder (9) abuts against the surface of the transmission belt (4).

2. A polishing machine belt tensioning mechanism according to claim 1, characterized in that: Sliding rods (10) are provided on both sides of the screw rod frame (7), and the sliding rods (10) are slidably connected to the inside of the fixed plate (6), and the upper ends of the sliding rods (10) are fixedly connected to the lower surface of the mounting seat (8).

3. The polishing machine belt tensioning mechanism according to claim 1, characterized in that: A motor (11) is installed on the surface of one of the rotating wheel shafts (3), a fixing frame (12) is fixedly connected to the surface of the motor (11), and a support leg of the fixing frame (12) is fixedly connected to the side wall of the polishing box (1).

4. The polishing machine belt tensioning mechanism according to claim 1, characterized in that: Four support columns (13) are fixedly connected to the side wall of the polishing box (1), and one end of the four support columns (13) is fixedly connected to a detachable protective plate (14) via bolts.

5. A polishing machine belt tensioning mechanism according to claim 4, characterized in that: A plurality of air holes (15) are provided on the surface of the protective plate (14).

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