Automatic polishing device for inner wall of aluminum alloy pipe

Abstract

The application discloses an automatic polishing device for inner walls of aluminum alloy pipes and relates to the technical field of polishing devices. The automatic polishing device comprises a fixed disc, a cam, a first polishing rod and a first sliding block, a second polishing rod and a second sliding block, and a rotating shaft. The fixed disc rotates around the rotating shaft. The cam is rotatably connected to the fixed disc. The first polishing rod is connected to the first sliding block. A plurality of the first sliding blocks are arranged in the circumferential direction of the fixed disc. The first sliding blocks slide in the radial direction of the fixed disc. The second polishing rod is connected to the second sliding block. A plurality of the second sliding blocks are arranged in the circumferential direction of the fixed disc. The second sliding blocks slide in the radial direction of the fixed disc. The cam can alternately increase or decrease the array radius of the first sliding blocks and the second sliding blocks. The automatic polishing device for inner walls of aluminum alloy pipes has good polishing effect.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, and in particular to an automatic grinding device for the inner wall of aluminum alloy pipes. Background Technology

[0002] After the steel pipe is manufactured, its inner wall needs to be ground to meet usage requirements. A common grinding device, as shown in patent number ZL202123433469.9 (named "Enamel Pipe Inner Wall Grinding Assembly"), mainly consists of a rotating shaft and a grinding head. The grinding head is fixed to one end of the rotating shaft and rotated by the shaft. During operation, the rotating shaft gradually extends into the pipe to be ground, achieving grinding of the inner wall. The disadvantage of this grinding device is that it only has a single grinding head and cannot separate fine and rough grinding, resulting in poor surface grinding quality. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology and improve the polishing effect, the present invention provides an automatic polishing device for the inner wall of aluminum alloy pipes.

[0004] Technical solution: To achieve the above objectives, the present invention provides an automatic grinding device for the inner wall of aluminum alloy pipes, comprising: A fixed disk, which rotates along a pivot axis; A cam is rotatably connected to a fixed disk. The cam has protrusions and concave portions. Multiple protrusions are arranged in a circumferential array along the cam, and multiple concave portions are arranged in a circumferential array along the cam. The protrusions and concave portions are distributed alternately. A first polishing rod and a first slider, the first polishing rod is connected to the first slider, the first polishing rod and the first slider correspond one-to-one, a plurality of the first sliders are arranged in a circumferential array along the fixed disk, the first sliders slide along the radial direction of the fixed disk, and the first polishing rod rotates. The second polishing rod and the second slider are connected to the second slider. The second polishing rod and the second slider correspond one-to-one. Multiple second sliders are arranged in a circumferential array along the fixed disk. The second sliders slide radially along the fixed disk. The second polishing rod rotates. The first slider and the second slider are arranged in an alternating array. One end of the first slider and one end of the second slider respectively abut against the outer surface of the cam. The rotation of the cam can cause the array radius of the first slider and the second slider to alternately increase or decrease.

[0005] Preferably, the fixed disk is provided with a first sliding groove in a circumferential array, one side of the first slider and one side of the second slider extend into the first sliding groove, and the first slider and the second slider slide back and forth along the first sliding groove; a spring is provided in the first sliding groove, and under the action of the spring, the first slider and the second slider have a tendency to slide towards the center of the fixed disk.

[0006] Preferably, the first polishing rod is connected to a first pulley, the second polishing rod is connected to a second pulley, and the first pulley and the second pulley rotate synchronously through a first timing belt.

[0007] Preferably, a second slide groove is provided between at least two adjacent first slide grooves, and a third slider is slidably connected in the second slide groove. The third slider is connected to a central shaft, and the two ends of the central shaft are respectively connected to a first driven wheel and a second driven wheel. The first driven wheel, the first pulley, and the second pulley are distributed on the same side of the fixed disk, and the first driven wheel meshes with the first synchronous belt for transmission.

[0008] Preferably, the fixed plate is provided with a first telescopic rod and a second telescopic rod, the telescopic end of the first telescopic rod is connected to a third slider, the telescopic end of the second telescopic rod is connected to a tension wheel, the fixed plate is connected to a drive wheel, the drive wheel is driven to rotate by a first driver, and a second synchronous belt is connected between the drive wheel, the tension wheel and the second driven wheel.

[0009] Preferably, a clutch is connected between the first driver and the cam.

[0010] Preferably, the fixed disk is provided with a flange, which is used to connect to the output end of the second driver, and the second driver is used to drive the fixed disk to rotate.

[0011] Preferably, the first synchronous belt has double-sided teeth.

[0012] The automatic grinding device for the inner wall of aluminum alloy pipes of the present invention has at least the following technical effects: 1. When the entire device moves axially in the forward direction, the driving cam rotates, making the array radius of the first grinding rod larger than that of the second grinding rod. At this time, the first grinding rod grinds the inner wall of the tube. When the entire device moves axially in the reverse direction, the driving cam rotates, making the array radius of the second grinding rod larger than that of the first grinding rod. At this time, the second grinding rod grinds the inner wall of the tube. The first grinding rod is used for rough grinding, and the second grinding rod is used for fine grinding. The first and second grinding rods are used together to improve the grinding effect. 2. The first and second grinding rods revolve around the central disk while also rotating on their own axis. Under the same rotation speed, compared with a grinding device that only revolves around the central disk, the grinding contact surface is ground more times, thus further improving the grinding effect. 3. All the first polishing rods and all the second polishing rods are driven by the first driver; at the same time, the first driver can also switch between the first polishing rods and the second polishing rods to make the whole structure more streamlined and reduce manufacturing costs. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a perspective view of the present invention; Figure 4 This is a schematic diagram of the structure of the present invention after the first and second grinding rods have been removed; Figure 5 This is a schematic diagram of the structure of the cam described in this invention; Figure 6 This is a schematic diagram of the structure of the fixed disk described in this invention; Figure 7 This is a cross-sectional view of the structure of the present invention.

[0014] In the diagram, 1. Fixed disc; 2. Cam; 3. Protrusion; 4. Recess; 5. First grinding rod; 6. First slider; 7. Second grinding rod; 8. Second slider; 9. First groove; 10. Spring; 11. First pulley; 12. Second pulley; 13. First timing belt; 14. Second groove; 15. Third slider; 16. First driven wheel; 17. Second driven wheel; 18. First telescopic rod; 19. Second telescopic rod; 20. Tensioner; 21. Driving wheel; 22. First driver; 23. Second timing belt; 24. Flange; 25. Second driver. Detailed Implementation

[0015] The following combination Figures 1 to 7 The principles and features of the present invention are described, and the examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0016] An automatic grinding device for the inner wall of aluminum alloy pipes includes a fixed plate 1, a cam 2, a first grinding rod 5, a first slider 6, a second grinding rod 7, and a second slider 8.

[0017] The fixed disk 1 is disc-shaped and rotates around its center. The cam 2 is rotatably connected to the fixed disk 1 and can rotate relative to the fixed disk 1. (See attached diagram) Figure 5As shown, the cam 2 has four protrusions 3 and four concave parts 4. The four protrusions 3 and the four concave parts 4 are arranged in a circumferential array, and the protrusions 3 and concave parts 4 are alternately distributed, that is, a protrusion 3 is placed between any two adjacent concave parts 4, and a concave part 4 is placed between any two adjacent protrusions 3. The fixed disk 1 has eight first sliding grooves 9 arranged in a circumferential array. A portion of the first slider 6 and a portion of the second slider 8 extend into the first sliding grooves 9, allowing the first slider 6 to slide along the first sliding groove 9 and the second slider 8 to slide along the first sliding groove 9. The length direction of the first sliding groove 9 is the radial direction of the fixed disk 1. The four first sliders 6 correspond one-to-one with the four first sliding grooves 9, and the four second sliders 8 correspond one-to-one with the four first sliding grooves 9, and the first sliders 6 and second sliders 8 are alternately distributed, that is, a first slider 6 is placed between any two adjacent second sliders 8, and a second slider 8 is placed between any two adjacent first sliders 6. One end of the first slider 6 and one end of the second slider 8 are respectively connected to a top bead, and the top bead abuts against the outer surface of the cam 2. A spring 10 is installed inside the first slide groove 9. Under the action of the spring 10, the first slider 6 and the second slider 8 tend to move towards the center of the fixed disk 1. The first grinding rod 5 is fixed to the end of the first slider 6 away from the center of the fixed disk 1; the second grinding rod 7 is fixed to the end of the second slider 8 away from the center of the fixed disk 1. When the cam 2 rotates so that the convex part 3 is opposite to the first grinding rod 5, the concave part 4 of the cam 2 is opposite to the second grinding rod 7. At this time, the array radius of the first grinding rod 5 is greater than the array radius of the second grinding rod 7, and the first grinding rod 5 contacts the inner wall of the aluminum alloy tube for grinding the inner wall of the aluminum alloy tube. When the cam 2 rotates so that the convex part 3 is opposite to the second grinding rod 7, the concave part 4 of the cam 2 is opposite to the first grinding rod 5. At this time, the array radius of the second grinding rod 7 is greater than the array radius of the first grinding rod 5, and the second grinding rod 7 contacts the inner wall of the aluminum alloy tube for grinding the inner wall of the aluminum alloy tube. The rotation of the cam 2 causes the first slider 6 and the second slider 8 to slide back and forth in the first groove 9, and their array radius alternately increases or decreases.

[0018] The first polishing rod 5 is connected to a first pulley 11, and the second polishing rod 7 is connected to a second pulley 12. The first pulley 11 and the second pulley 12 rotate synchronously via a first synchronous belt 13. That is, when the first polishing rod 5 is working and the second polishing rod 7 is not working, or when the first polishing rod 5 is not working and the second polishing rod 7 is working, both the first polishing rod 5 and the second polishing rod 7 are rotating. A second sliding groove 14 is provided between two adjacent first sliding grooves 9. A third slider 15 is slidably connected in the second sliding groove 14. The third slider 15 is connected to a central shaft. The two ends of the central shaft are respectively connected to a first driven wheel 16 and a second driven wheel 17. The first driven wheel 16 meshes with the first synchronous belt 13 for transmission. The first synchronous belt 13 has double-sided teeth, and its specific winding method is as follows: Figure 1 As shown.

[0019] The fixed disk 1 is provided with a first telescopic rod 18 and a second telescopic rod 19, both of which are electrically powered. The telescopic end of the first telescopic rod 18 is connected to a third slider 15 to drive the third slider 15 to slide along the second slide groove 14. The telescopic end of the second telescopic rod 19 is connected to a tension wheel 20. A drive wheel 21 is connected to the center of the fixed disk 1. A second synchronous belt 23 is connected between the drive wheel 21, the tension wheel 20, and the second driven wheel 17. The drive wheel 21 is driven to rotate by a first driver 22. The drive wheel 21 drives the second synchronous belt 23 to rotate, which in turn drives the second driven wheel 17 to rotate. The second driven wheel 17 drives the first driven wheel 16 to rotate, which in turn drives the first synchronous belt 13 to rotate. The first synchronous belt 13 drives the first grinding rod 5 and the second grinding rod 7 to rotate via a first pulley 11 and a second pulley 12. When it is necessary to adjust the relative position of the first polishing rod 5 and the second polishing rod 7, the first telescopic rod 18 and the second telescopic rod 19 should move synchronously to ensure the tension of the first synchronous belt 13 and the second synchronous belt 23.

[0020] The fixed plate 1 is equipped with a flange 24, which is used to connect to the output end of the second driver 25. Under the action of the second driver 25, the fixed plate 1 rotates; under the action of the first driver 22, the first grinding rod 5 and the second grinding rod 7 rotate. The connection method of the flange 24 and the second driver 25 is existing technology and will not be described further. This device can be fixed to the end of a long rod, which gradually extends into the aluminum alloy tube to complete the grinding of its inner wall.

[0021] A clutch is connected between the first driver 22 and the input shaft of the cam 2. When it is necessary to adjust the position of the first grinding rod 5 and the second grinding rod 7, the clutch is activated and the first driver 22 drives the cam 2 to rotate.

[0022] The first grinding rod 5 and the second grinding rod 7 in this device should be selected from different specifications. Specifically, when the entire device moves axially in the forward direction, the first grinding rod 5 performs coarse grinding on the inner wall of the tube; when the entire device moves axially in the reverse direction, the second grinding rod 7 performs fine grinding on the inner wall of the tube.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic grinding device for the inner wall of aluminum alloy pipes, characterized in that, include Fixed disk (1), the fixed disk (1) rotates along the axis of rotation; Cam (2), the cam (2) is rotatably connected to fixed disk (1), the cam (2) is provided with protrusion (3) and concave (4), a plurality of protrusions (3) are arranged in a circumferential array along the cam (2), a plurality of concave (4) are arranged in a circumferential array along the cam (2), and the protrusions (3) and concave (4) are alternately distributed; The first polishing rod (5) and the first slider (6) are connected to the first slider (6). The first polishing rod (5) and the first slider (6) correspond one-to-one. Multiple first sliders (6) are arranged in a circumferential array along the fixed disk (1). The first slider (6) slides radially along the fixed disk (1). The first polishing rod (5) rotates. The second polishing rod (7) and the second slider (8) are connected to the second slider (8). The second polishing rod (7) and the second slider (8) correspond one-to-one. Multiple second sliders (8) are arranged in a circumferential array along the fixed disk (1). The second sliders (8) slide radially along the fixed disk (1). The second polishing rod (7) rotates. The first slider (6) and the second slider (8) are arranged in an alternating array. One end of the first slider (6) and one end of the second slider (8) respectively abut against the outer surface of the cam (2). The rotation of the cam (2) can cause the array radius of the first slider (6) and the second slider (8) to alternately increase or decrease. The first polishing rod (5) is connected to the first pulley (11), and the second polishing rod (7) is connected to the second pulley (12). The first pulley (11) and the second pulley (12) rotate synchronously through the first synchronous belt (13).

2. The automatic grinding device for the inner wall of aluminum alloy pipes according to claim 1, characterized in that, The fixed disk (1) is provided with a first slide groove (9) arranged in a circumferential array. One side of the first slider (6) and one side of the second slider (8) extend into the first slide groove (9). The first slider (6) and the second slider (8) slide back and forth along the first slide groove (9). A spring (10) is provided in the first slide groove (9). Under the action of the spring (10), the first slider (6) and the second slider (8) have a tendency to slide towards the center of the fixed disk (1).

3. The automatic grinding device for the inner wall of aluminum alloy pipes according to claim 2, characterized in that, A second slide groove (14) is provided between at least two adjacent first slide grooves (9). A third slider (15) is slidably connected in the second slide groove (14). The third slider (15) is connected to a central shaft. The two ends of the central shaft are respectively connected to a first driven wheel (16) and a second driven wheel (17). The first driven wheel (16), the first pulley (11), and the second pulley (12) are distributed on the same side of the fixed disk (1). The first driven wheel (16) meshes with the first synchronous belt (13) for transmission.

4. The automatic grinding device for the inner wall of aluminum alloy pipes according to claim 3, characterized in that, The fixed disk (1) is provided with a first telescopic rod (18) and a second telescopic rod (19). The telescopic end of the first telescopic rod (18) is connected to a third slider (15). The telescopic end of the second telescopic rod (19) is connected to a tension wheel (20). The fixed disk (1) is connected to a drive wheel (21). The drive wheel (21) is driven to rotate by a first driver (22). A second synchronous belt (23) is connected between the drive wheel (21), the tension wheel (20), and the second driven wheel (17).

5. The automatic grinding device for the inner wall of aluminum alloy pipes according to claim 4, characterized in that, A clutch is connected between the first driver (22) and the cam (2).

6. The automatic grinding device for the inner wall of aluminum alloy pipes according to claim 1, characterized in that, The fixed disk (1) is provided with a flange (24), which is used to connect to the output end of the second driver (25), which is used to drive the fixed disk (1) to rotate.

7. The automatic grinding device for the inner wall of aluminum alloy pipes according to claim 1, characterized in that, The first synchronous belt (13) has double-sided teeth.

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