Pipeline inner wall polishing machine and polishing method

Abstract

The invention discloses a pipeline inner wall polishing machine and a polishing method, and relates to the technical field of polishing equipment. The polishing machine comprises a rack, a supporting frame and a rotating mechanism, the supporting frame comprises a main shaft, a first supporting disc and a second supporting disc, the first supporting disc and the second supporting disc are fixed to the main shaft, the first supporting disc and the second supporting disc are fixed to the rack, a plurality of clamping holes are evenly distributed in the first supporting disc in the circumferential direction, and bearings are arranged in the clamping holes; a planetary gear is arranged at one end of the rotating shaft, and a first sleeve is arranged at the other end of the rotating shaft; a plurality of clamping holes are evenly distributed in the second supporting disc in the circumferential direction, bearings are arranged in the clamping holes, telescopic rods are installed in the bearings, and second sleeves are arranged at the ends, close to the first supporting disc, of the telescopic rods; the rotating mechanism comprises a driving motor and a driving gear, the driving gear is installed on an output shaft of the driving motor, and the planetary gear is meshed with the driving gear. The technical problem that in the prior art, the inner wall of a round pipe is inconvenient to polish can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of polishing equipment, and in particular to an inner wall polishing machine for pipes and a polishing method therefor. Background Art

[0002] Pipes are an essential part of fluid transportation. Pipes generally consist of round pipes and connectors, etc. Round pipes can be classified into cast steel pipes, cast iron pipes, stainless steel pipes, copper pipes, aluminum pipes, forged steel pipes, alloy pipes, etc. according to the material. Among them, the inner wall finish of round steel pipes or copper pipes after welding, extrusion, or drawing does not meet the requirements for use in some high-demand occasions and usually needs to be polished. In most cases, due to the small diameter of the round pipes, the polishing is difficult. At present, many small and medium-sized enterprises still use the method of manually polishing the inner wall of pipe fittings with abrasive belts based on experience. Although there are also some automatic polishing equipment, due to the deficiencies in their designs, there are still great limitations, such as inconvenient sandpaper replacement, poor applicability, etc. In addition, polishing the inner walls of pipe fittings one by one is very inefficient and cannot meet the requirements of large-scale production. Summary of the Invention

[0003] In view of the technical problem of inconvenient grinding of the inner wall of round pipes existing in the above-mentioned prior art, the present invention provides an inner wall polishing machine for pipes and a polishing method therefor that can efficiently grind the inner wall of pipes.

[0004] The technical solution for the present invention to solve the above technical problems is as follows: An inner wall polishing machine for pipes includes a frame, and further includes a support frame and a rotation mechanism. The support frame includes a main shaft, a first support disk and a second support disk fixed on the main shaft, and the first support disk and the second support disk are fixed on the frame. A plurality of clamping holes are circumferentially and evenly distributed on the first support disk. Bearings are provided in the clamping holes, and a rotating shaft is installed in the bearings. A planetary gear is provided at one end of the rotating shaft, and a first sleeve is provided at the other end of the rotating shaft. A plurality of clamping holes are circumferentially and evenly distributed on the second support disk. Bearings are provided in the clamping holes, and telescopic rods are installed in the bearings. A second sleeve is provided at one end of the telescopic rod close to the first support disk. The rotation mechanism includes a drive motor and a driving gear, the driving gear is installed on the output shaft of the drive motor, and the planetary gear meshes with the driving gear.

[0005] On the basis of the above technical solution, the present invention can be further improved as follows.

[0006] Further, the telescopic rod includes an inner tube, an outer tube, a spring and a connecting rod. One end of the inner tube is inserted into the outer tube, the other end of the inner tube is connected to the second sleeve, one end of the spring abuts against the second sleeve, the other end of the spring abuts against the outer tube, one end of the connecting rod is connected to the bearing, and the other end of the connecting rod is connected to the outer tube.

[0007] Further, it further includes a swinging mechanism, which enables the round tube to swing left and right while rotating.

[0008] Further, the swinging mechanism includes a base arranged under the frame, a swinging drive mechanism and a pull rod. The frame and the base are connected by four movable connecting rods; the swinging drive mechanism includes an eccentric wheel; one end of the pull rod is connected to the frame, and the other end of the pull rod is hinged to the eccentric wheel, and the eccentric wheel is driven to rotate by a swinging motor.

[0009] Further, an observation tube is also arranged on the support frame, and at least a section of the observation tube is a transparent tube.

[0010] The present invention also discloses a method for polishing the inner wall of a pipeline. Using the pipeline inner wall polishing machine described above, the polishing steps are as follows; 1) Pour an appropriate amount of emery into multiple round tubes, and block both ends with plugs; 2) Clamp and fix both ends of multiple round tubes filled with emery along the axis in the first sleeve and the second sleeve; 3) Start the rotating mechanism and stop the machine according to experience after running for a set time; 4) Remove the round tubes, discharge the emery, and blow and clean the inner wall.

[0011] Based on the above technical solutions, the present invention can be further improved as follows.

[0012] Further, in step 3), the swinging mechanism is also started, so that the round tube swings left and right while rotating; Further, in step 3), check the distribution of emery in the tube through the observation tube and adjust the rotation speed of the support frame.

[0013] The beneficial effects of the present invention are: the pipeline inner wall polishing machine of the present invention enables the emery to effectively rub against the inner wall of the round tube through the self-rotation of the round tube, solves the technical problem of inconvenient grinding of the inner wall of the round tube in the prior art, and can simultaneously grind multiple round tubes in one clamping, with high polishing and grinding efficiency; in addition, regardless of the inner diameter of the pipe orifice, it can be polished by the internal emery. Description of the Drawings

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the pipeline inner wall polishing machine of the present invention; Figure 2 It is a structural schematic diagram of the pipeline inner wall polishing machine of the present invention after installing the round tube; Figure 3 It is a mounting structure schematic diagram of the observation tube of the present invention; Figure 4Structural schematic diagram of the first support disk of the present invention; Figure 5 Structural schematic diagram of the telescopic rod and the second sleeve of the present invention; Figure 6 For the present invention Figure 5 front view; Figure 7 For the present invention Figure 6 A-A sectional view; Figure 8 Structural schematic diagram of the first sleeve and the rotating shaft of the present invention; Figure 9 Structural schematic diagram of the pipeline inner wall polishing machine of the present invention installed on the swing mechanism; The component names corresponding to the reference numerals in the drawings are as follows: 1, frame; 101, base; 102, first support column; 103, second support column; 104, third support column; 2, support frame; 201, first support disk; 202, second support disk; 203, main shaft; 3, bearing; 4, rotating shaft; 5, first sleeve; 6, telescopic rod; 601, inner tube; 602, outer tube; 603, spring; 604, connecting rod; 7, second sleeve; 8, rotating mechanism; 801, driving motor; 802, driving gear; 9, swing mechanism; 901, base; 902, eccentric wheel; 903, swing motor; 904, pull rod; 905, movable connecting rod; 10, planetary gear; 11, round tube; 12, observation tube; 13, observation window. Detailed implementation manners

[0015] The principles and features of the present invention are described below in conjunction with examples. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention. Specific embodiment 1: Such as Figures 1-8As shown in the figure, a polishing machine for the inner wall of a pipeline includes a frame 1, and also includes a support frame 2 and a rotating mechanism 8. The support frame 2 includes a main shaft 203, and a first support disk 201 and a second support disk 202 fixed at both ends of the main shaft 203. The first support disk 201 and the second support disk 202 are fixed on the frame 1, and the first support disk 201 and the second support disk 202 are connected by the main shaft 203. A plurality of clamping holes are evenly distributed along the circumferential direction on the first support disk 201. Bearings 3 are arranged in the clamping holes, and a rotating shaft 4 is installed in the bearings 3. A planetary gear 10 is arranged at one end of the rotating shaft 4, and a first sleeve 5 is arranged at the other end of the rotating shaft 4. A plurality of clamping holes are evenly distributed along the circumferential direction on the second support disk 202. Bearings 3 are arranged in the clamping holes, and a telescopic rod 6 is installed in the bearings 3. A second sleeve 7 is arranged at one end of the telescopic rod 6 close to the first support disk 201. The rotating mechanism 8 includes a driving motor 801 and a driving gear 802. The driving gear 802 is installed on the output shaft of the driving motor 801, and the planetary gear 10 meshes with the driving gear 802.

[0017] More specifically, the frame 1 includes a base 101, a first support column 102, a second support column 103 and a third support column 104 arranged on the base 101. The first support column 102 is used to support the rotating mechanism 8, the second support column 103 is used to support the first support disk 201, and the third support column 104 is used to support the second support disk 202. The telescopic rod 6 includes an inner tube 601, an outer tube 602, a spring 603 and a connecting rod 604. One end of the inner tube 601 is inserted into the outer tube 602, the other end of the inner tube 601 is connected to the second sleeve 7, one end of the spring 603 abuts against the second sleeve 7, the other end of the spring 603 abuts against the outer tube 602, one end of the connecting rod 604 is connected to the bearing 3, and the other end of the connecting rod 604 is connected to the outer tube 602. When installing a round tube 11 to be polished on the support frame 2, first, one end of the round tube 11 is clamped in the first sleeve 5, and then the telescopic rod 6 is compressed, and the second sleeve 7 is clamped at the other end of the round tube 11.

[0018] An observation tube 12 is also arranged on the support frame 2, and at least one section of the observation tube 12 is a transparent observation window 13. By arranging the observation tube 12 with a transparent observation window 13 having a diameter equivalent to that of the round tube 11, the movement state of the internal sand grains can be effectively observed, which is convenient for controlling the time and speed. As the observation tube 12, soft particulate matters with a mass and particle size similar to those of the sand grains can be placed inside to avoid rapid damage to the observation tube 12.

[0019] When a polishing operation is required, an appropriate amount of emery is filled into each of the multiple round tubes 11, and both ends are sealed with plugs. One end of each of the multiple round tubes 11 filled with emery is inserted into the first sleeve 5 in sequence, and the other end is fixedly installed in the second sleeve 7 along the axis. The driving motor 801 is started, and the driving motor 801 drives the driving gear 802 to rotate. The driving gear 802 drives the planetary gear 10 to rotate. While the planetary gear 10 revolves around the driving gear 802, it can rotate at a high speed around its own axis. As a result, each of the multiple round tubes 11 rotates at a high speed along its own axis, and the emery in the round tube 11 effectively frictions with the inner wall of the round tube 11. The movement state of the sand grains in the observation tube 12 can be effectively viewed through the transparent tube on the support frame 2. The speed is controlled by a reduction rotation motor, and the time is controlled.

[0020] The emery can be selected according to different polishing requirements, with a mesh size of 140 - 10 mesh, or a particle size of 0.1 mm - 2 mm.

[0021] The inner wall polishing machine of the present invention enables the emery to effectively friction with the inner wall of the round tube 11 through the rotation of the round tube 11, solves the technical problem of inconvenient grinding of the inner wall of the round tube 11 in the prior art, and can simultaneously grind multiple round tubes 11 in one clamping, with high polishing and grinding efficiency. In addition, regardless of the inner diameter of the pipe orifice, it can be polished by the internal emery. Specific Embodiment Two: As Figure 9 shown, different from Specific Embodiment One, the inner wall polishing machine of the pipeline further includes a swing mechanism 9, which enables the round tube 11 to be in a left - right swing state while rotating. The swing mechanism 9 includes a base 901 arranged under the frame 1, a swing driving mechanism, and a pull rod 904. The frame 1 and the base 901 are connected by four movable connecting rods 905. The swing driving mechanism includes an eccentric wheel 902. One end of the frame 1 is connected to the pull rod 904, and the other end of the pull rod 904 is hinged to the eccentric wheel 902. The eccentric wheel 902 is driven to rotate by a swing motor 903. Since the frame 1 swings left and right, driving the polished pipe to swing left and right, the emery inside the round tube 11 can not only perform circumferential grinding on the pipe wall, but also swing left and right for friction, avoiding the phenomenon of uneven circumferential distribution of the emery that may be caused by the same - direction rotation of the round tube 11, and improving the polishing efficiency and uniformity.

[0023] When polishing operations are required, an appropriate amount of emery is filled into multiple round tubes 11 respectively, and both ends are sealed with plugs. One end of each of the multiple round tubes 11 filled with emery is inserted into the first sleeve 5 in sequence, and the other end is fixedly installed in the second sleeve 7 along the axis. The driving motor 801 is started, and the driving motor 801 drives the driving gear 802 to rotate. The driving gear 802 drives the planetary gear 10 to rotate. Further, several of the round tubes 11 all rotate at high speed along their respective axes, and the emery in the round tubes 11 effectively frictions with the inner walls of the round tubes 11. Further, the swing mechanism 9 is started, and the swing mechanism 9 drives the frame 1 to swing left and right, thereby driving the tube to be polished to swing left and right, so that the emery inside the round tube 11 can not only polish the tube wall circumferentially, but also swing left and right for friction. The movement state of the sand grains in the observation tube 12 can be effectively observed through the transparent tube on the support frame 2, and the speed is controlled by the reduction rotation motor and the time is controlled.

[0024] The present invention also discloses a method for polishing the inner wall of a pipeline, including the following steps: 1) An appropriate amount of emery is filled into multiple round tubes 11 respectively, and both ends are sealed with plugs; 2) The multiple round tubes 11 filled with emery are fixedly installed in the first sleeve 5 and the second sleeve 7 along the axis; 3) The rotation mechanism 8 is started and stopped after running to the set time according to experience; 4) The round tubes 11 are removed, the emery is discharged, and the inner wall is purged and cleaned.

[0025] In the step 3), the swing mechanism 9 is also started to make the round tubes 11 in a state of swinging left and right while rotating, that is, the emery can also reciprocate along the axis of the round tubes 11; In the step 3), the distribution of the emery in the tube is checked through the observation tube 12, and the rotation speed of the support frame 2 is adjusted.

[0026] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipeline inner wall polishing machine, comprising a frame (1), characterized in that, It further includes a support frame (2) and a rotating mechanism (8). The support frame (2) includes a main shaft (203), a first support disk (201) and a second support disk (202) fixed on the main shaft (203). The first support disk (201) and the second support disk (202) are fixedly supported on the frame (1). A plurality of clamping holes are circumferentially and uniformly distributed on the first support disk (201). Bearings (3) are arranged in the clamping holes. A rotating shaft (4) is installed in the bearings (3). A planetary gear (10) is arranged at one end of the rotating shaft (4), and a first sleeve (5) is arranged at the other end of the rotating shaft (4). A plurality of clamping holes are circumferentially and uniformly distributed on the second support disk (202). Bearings (3) are arranged in the clamping holes. A telescopic rod (6) is installed in the bearings (3). A second sleeve (7) is arranged at one end of the telescopic rod (6) close to the first support disk (201). The rotating mechanism (8) includes a driving motor (801) and a driving gear (802). The driving gear (802) is installed on the output shaft of the driving motor (801), and the planetary gear (10) meshes with the driving gear (802).

2. The pipe inner wall polishing machine according to claim 1, characterized in that, The telescopic rod (6) includes an inner tube (601), an outer tube (602), a spring (603) and a connecting rod (604). One end of the inner tube (601) is inserted into the outer tube (602). The other end of the inner tube (601) is connected to the second sleeve (7). One end of the spring (603) abuts against the second sleeve (7), and the other end of the spring (603) abuts against the outer tube (602). One end of the connecting rod (604) is connected to the bearing (3), and the other end of the connecting rod (604) is connected to the outer tube (602).

3. The pipeline inner wall polishing machine according to claim 1 or 2, characterized in that, It further includes a swinging mechanism (9) to make the round tube (11) swing left and right while rotating.

4. The inner wall polishing machine for pipelines according to claim 3, characterized in that, The swinging mechanism (9) includes a base (901), an eccentric wheel (902), a swinging motor (903) and a pull rod (904) arranged under the frame (1). The frame (1) and the base (901) are connected by four movable connecting rods (905). One end of the frame (1) is connected to the pull rod (904), and the other end of the pull rod (904) is hinged to the eccentric wheel (902). The eccentric wheel (902) is driven to rotate by the swinging motor (903).

5. The pipe inner wall polishing machine according to claim 1, characterized in that An observation tube (12) is further arranged on the support frame (2), and at least one section of the observation tube (12) is a transparent tube.

6. A method for polishing the inner wall of a pipeline, which uses the pipeline inner wall polishing machine according to any one of claims 1 to 4, characterized in that The polishing steps are as follows; 1) Pour an appropriate amount of emery into a plurality of round tubes (11) and seal both ends with plugs; 2) Clamp and fix both ends of a plurality of round tubes (11) filled with emery along the axis in the first sleeve (5) and the second sleeve (7); 3) Start the rotating mechanism (8) and stop the machine according to experience after running for a set time; 4) Remove the round tube (11), discharge the emery, and blow and clean the inner wall.

7. The method for polishing the inner wall of a pipeline according to claim 6, characterized in that, In step 3), the swinging mechanism (9) is further started to make the round tube (11) swing left and right while rotating.

8. The method for polishing the inner wall of a pipeline according to claim 6, characterized in that, In step 3), observe the distribution of emery in the tube through the observation tube (12) and adjust the rotation speed of the support frame (2).

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