A polishing device and method for welding stainless steel steel pipes

Abstract

The present invention belongs to the technical field of stainless steel pipe polishing, and discloses a polishing device and method for stainless steel pipe welding, including a base. In the middle of the upper surface of the base, an annular mounting cylinder is fixedly installed. On the right side of the inner cavity of the mounting cylinder, an annular rotating block is movably installed through a bearing. On the upper and lower sides of the inner ring of the rotating block, two grinding blocks are symmetrically arranged. Through the cooperative design of the driving mechanism, the rotating block, the grinding blocks, and the adjusting mechanism, the present invention can drive the grinding blocks to move into contact with the surface of the weld bead of the stainless steel pipe for intermittent layer-by-layer grinding and polishing. When the grinding blocks are grinding, they are not easily bounced and jolted under the reaction force of contacting the surface of the weld bead, and the grinding and polishing effect on the weld of the stainless steel pipe is good. It solves the problem that the high temperature generated during long-term contact and fitting grinding by the grinding blocks in the prior art is likely to burn the surface of the stainless steel pipe, and avoids affecting the quality and aesthetics of the stainless steel pipe.

Description

Technical Field

[0001] The present invention belongs to the technical field of stainless steel pipe polishing, and specifically relates to a polishing device and method for stainless steel pipe welding. Background Art

[0002] Stainless steel pipes are a widely used industrial material, with advantages such as corrosion resistance, high temperature resistance, and high strength. Stainless steel pipes usually need to be connected into the required shape or structure by welding. However, the welding process will produce weld seams on the surface of stainless steel pipes. These weld seams not only affect the appearance and smoothness of stainless steel pipes, but also easily cause stress concentration and corrosion, reducing the service life and performance of stainless steel pipes. Therefore, a polishing device is usually used to polish and grind the weld seams of stainless steel pipes to eliminate the protrusions and burrs of the weld seams, and improve the surface quality and flatness of stainless steel pipes.

[0003] In the prior art, a Chinese patent discloses a rapid polishing device for stainless steel pipe processing (publication number: CN216859198U). Its main structure includes a stainless steel pipe and an annular clamp seat. A bearing is coaxially fixed on the side of the annular clamp seat. The side of the annular clamp seat is rotatably connected to a housing through the bearing. A driven gear is coaxially fixed on the side of the annular clamp seat. A driving gear is meshed and connected to one side of the driven gear. A support plate b is arranged on one side of the driving gear. A connecting shaft b rotatably connected to the support plate b is coaxially fixed to the driving gear. One end of the connecting shaft b away from the driving gear is connected to a driving motor a. A fixing mechanism is arranged in the annular clamp seat. There are multiple fixing mechanisms and they are distributed annularly. A bottom plate is arranged on one side of the annular clamp seat. A moving mechanism is arranged on the top of the bottom plate. A connecting frame is slidably connected to the top of the bottom plate through the moving mechanism. A driving motor b is fixed on the connecting frame. A grinding wheel coaxially fixed to the output end of the driving motor b is arranged on the top of the connecting frame. The grinding wheel is arranged on one side of the stainless steel pipe.

[0004] In actual use, the above-mentioned patent drives the gear to rotate by rotating the connecting shaft a. The gear drives the rack plate to slide in the chute, thereby driving the connecting frame to slowly move on the top of the base plate, driving the grinding wheel at the top of the connecting frame to approach the outer surface weld of the stainless steel pipe. The driving motor b is started to work. The driving motor b drives the grinding wheel to rotate and slowly fit to the outer surface weld of the stainless steel pipe to quickly polish the weld, eliminating the need for manual holding of the stainless steel pipe for weld grinding and polishing. However, there are still corresponding drawbacks in actual use: the thickness of the weld beads at the welds is uneven and uneven. During the use of the above-mentioned patent, the operator continuously manually controls the grinding wheel to approach the outer surface weld of the stainless steel pipe and squeeze against the surface of the weld bead. When the grinding wheel rotates to grind the weld bead, under the reaction force of the mutual extrusion between the grinding wheel and the surface of the weld bead, the grinding wheel is prone to bounce and separate from the surface of the weld bead, reducing the polishing effect of the stainless steel pipe weld. At the same time, in the prior art, there is also a method of controlling the movement of the grinding wheel through a hydraulic propulsion device (such as a hydraulic cylinder). Although it can keep the grinding wheel in contact with the surface of the weld bead during the rotating grinding process, the high temperature generated during long-term contact grinding is likely to burn the surface of the stainless steel pipe, which is likely to affect the quality and aesthetics of the stainless steel pipe. Summary of the Invention

[0005] To solve the problems raised in the above background technology, the present invention provides a polishing device and method for stainless steel pipe welding, which has the advantages of convenient operation, good polishing effect, and not easily affecting quality and aesthetics. Through the cooperative design of structures such as a driving mechanism, a rotating block, a grinding block, and an adjusting mechanism, it can drive the grinding block to move into contact with the weld bead surface of the stainless steel pipe for intermittent layer-by-layer grinding and polishing. When the grinding block grinds, it is not easy to bounce and jump under the reaction force of contact with the weld bead surface, and has a good grinding and polishing effect on the stainless steel pipe weld, and is not easily affected by the quality and aesthetics of the stainless steel pipe.

[0006] To achieve the above object, the present invention provides the following technical solution: A polishing device for stainless steel pipe welding, including a base, a circular mounting cylinder is fixedly installed in the middle of the upper surface of the base, a circular rotating block is movably installed in the right cavity of the mounting cylinder through a bearing, two grinding blocks are symmetrically arranged on the upper and lower sides of the inner ring of the rotating block, a driving mechanism for driving the rotation of the rotating block is arranged on the right outer surface of the mounting cylinder, an adjusting mechanism for driving the grinding block to move into contact with the weld bead on the outer surface of the stainless steel pipe is arranged on the left cavity of the mounting cylinder, and two clamps for fixing the stainless steel pipe are symmetrically arranged on the left and right sides of the upper surface of the base;

[0007] The adjusting mechanism includes an annular mounting block disposed in the inner cavity of the mounting cylinder on the left side of the rotating block. The right side of the outer surface of the annular mounting block is movably sleeved with an annular connecting frame through a bearing. The outer ring of the annular connecting frame is slidably mounted with an annular connecting shell. Three vertically sliding docking blocks are horizontally arranged side by side in the upper part of the inner cavity of the annular connecting shell. Two mounting cavities are symmetrically formed on the upper and lower sides of the rotating block. A docking rod is vertically slidably mounted on the side of the inner cavity of the mounting cavity close to the inner cavity of the mounting cylinder. A moving block is vertically slidably mounted on the side of the inner cavity of the mounting cavity away from the inner cavity of the mounting cylinder. A two-stage telescopic rod is fixedly mounted on the right side wall of the moving block. The right end of the two-stage telescopic rod is fixedly mounted with a mounting shell. A transmission mechanism for driving the annular mounting block to rotate and move is provided between the left side of the rotating block and the inner cavity of the mounting cylinder. A limiting mechanism is provided between the left side of the rotating block and the inner cavity of the mounting cavity. A wax spraying mechanism is provided in the inner cavity of the moving block and on the mounting shell.

[0008] Among them, the outer surface of the annular connecting shell is fixedly connected to the inner cavity of the mounting cylinder. One end of the docking rod penetrates to the outside of the inner cavity of the mounting cavity, and a ball is movably mounted at one end of the docking rod. The outer surface of the ball is movably connected to the bottom surface of the docking block. A connecting member is provided at the other end of the docking rod. Two compression spring seats are symmetrically and vertically fixedly mounted on the side of the inner cavity of the mounting cavity away from the inner cavity of the mounting cylinder. The output end of the compression spring seat is fixedly connected to the outer surface of the moving block. The outer surface of the mounting shell is slidably connected to the inner ring of the rotating block through a vertically fixedly mounted connecting rod. The outer surface of the grinding block is fixedly connected to the inner cavity of the mounting shell.

[0009] In the above technical solution, preferably, the driving mechanism includes a driving ring fixedly sleeved on the outer ring of the rotating block, a driving motor fixedly mounted on the upper part of the outer surface of the mounting cylinder, and a driving wheel fixedly sleeved on the output shaft end of the driving motor for driving the driving ring to rotate.

[0010] In the above technical solution, preferably, the transmission mechanism includes two lead screws symmetrically and movably mounted on the left side wall of the rotating block through bearings for driving the annular mounting block to move and rotate, an annular track fixedly mounted on the left side of the inner cavity of the mounting cylinder, and a roller fixedly sleeved on the left end of the lead screw; wherein, the outer ring of the roller is movably connected to the inner ring of the annular track.

[0011] In the above technical solution, preferably, the limiting mechanism includes two limiting clamping plates symmetrically distributed on the front and rear sides of the inner cavity of the installation cavity, two spring clamping blocks symmetrically and fixedly installed on the lower parts of the front and rear sides of the moving block, and a pressing rod arranged between the limiting clamping plate and the inner cavity of the installation cavity; wherein, the spring clamping block is adapted to the limiting clamping plate, one side of the outer surface of the pressing rod is movably connected to one side of the outer surface of the limiting clamping plate, the right end of the pressing rod is fixedly connected to the left side wall of the rotating block, and the outer surface of the limiting clamping plate is connected to the inner cavity of the installation cavity through two first stretching spring rods symmetrically distributed up and down.

[0012] In the above technical solution, preferably, three screw rods are horizontally and equidistantly threadedly installed on the upper surface of the annular connection shell, the bottom end of the screw rod is movably connected to the upper surface of the docking block through a bearing, and the top end of the screw rod penetrates above the installation cylinder.

[0013] In the above technical solution, preferably, the connecting member includes a connecting plate arranged between the docking rod and the moving block, and two second stretching spring rods symmetrically arranged between the inner cavity of the installation cavity close to one side of the inner cavity of the installation cylinder and the outer surface of the connecting plate; wherein, the outer surface of the connecting plate is movably connected to the outer surface of the moving block, and the elastic force of the second stretching spring rod can drive the connecting plate away from the moving block.

[0014] In the above technical solution, preferably, the fixture includes columns symmetrically and vertically fixedly installed on the left and right sides of the upper surface of the base, a ring-shaped placement shell fixedly installed at the top of the column, two electric telescopic rods symmetrically arranged in the inner cavity of the placement shell, and a clamping block fixedly installed at the output end of the electric telescopic rod for clamping and fixing the stainless steel steel pipe.

[0015] In the above technical solution, preferably, the wax spraying mechanism includes an assembly shell fixedly installed in the inner cavity of the moving block, a communication cavity opened in the inner cavity of the assembly shell close to one side of the connecting member, a dust collection cavity opened on the right side of the communication cavity, a dust collection cloth bag fixedly installed in the inner cavity of the dust collection cavity, a dust suction hole opened on the opposite surfaces of the two installation shells, a dust suction hose for connecting the dust suction hole and the dust collection cloth bag, a pushing air block moving up and down in the communication cavity for conveying the air in the inner cavity of the dust collection cavity to the inner cavity of the assembly shell, spray nozzles symmetrically and fixedly installed on the front and rear side walls of the installation shell, and a wax spraying hose for connecting the spray nozzle and the inner cavity of the assembly shell;

[0016] One end of the air pushing block extends outside the inner cavity of the communication cavity, and one end of the air pushing block is fixedly connected to the connecting piece. The air in the dust collection cavity is introduced into the communication cavity through a one-way intake valve, and the air in the communication cavity is introduced into the inner cavity of the assembly shell through a one-way outlet valve. A "U"-shaped sealing plate is slidably installed up and down in the inner cavity of the assembly shell. The side wall of the sealing plate can block the left port of the wax spraying hose. A vertical rod is fixedly installed on the outer surface of the sealing plate on the side far from the communication cavity. One end of the vertical rod penetrates outside the inner cavity of the moving block, and one end of the vertical rod is movably connected to the inner cavity of the installation cavity. A spring sleeve is fixedly sleeved on the outer surface of the vertical rod, and the other end of the spring sleeve is fixedly connected to the outer surface of the moving block.

[0017] A polishing method for stainless steel pipe welding includes the following use steps:

[0018] S1: Pass the stainless steel pipe to be polished through the inner cavities of the rotating block, the annular mounting block and the fixture, so that the weld of the stainless steel pipe is located between the two grinding blocks, and clamp and fix the stainless steel pipe through the fixture;

[0019] S2: The operator can adjust the height position of the docking block through the screw rod, so that the height positions of the three docking blocks decrease one by one from left to right;

[0020] S3: Start the driving motor to operate and drive the driving wheel to rotate. When the driving wheel rotates, it can drive the driving ring to drive the rotating block to rotate. When the rotating block rotates, it can drive the two grinding blocks to rotate. At the same time, when the rotating block rotates, it can drive the two lead screws to move circumferentially. When the lead screws move circumferentially, they can drive the annular mounting block to rotate. At the same time, under the action of the rollers and the annular track, the lead screws can rotate when moving circumferentially. When the lead screws rotate, they can drive the annular mounting block to move, so that the annular mounting block can rotate while moving. When the annular mounting block moves to the right, it can drive the limit clamping plate to move. Under the action of the extrusion rod, the limit clamping plate can be combined with the spring catch block to limit the moving block, so that the moving block can only move towards the stainless steel pipe. During the process of the annular mounting block moving to the right and rotating, it can drive the docking rod to move and rotate circumferentially at the same time. When the docking rod moves, it drives the balls to contact the bottom surfaces of the three docking blocks in turn. When the balls contact the three docking blocks in turn, the docking rod can drive the connecting piece to move and push the moving block to approach the stainless steel pipe intermittently. The moving block can drive the installation shell to drive the grinding block to move and contact the surface of the stainless steel pipe weld bead through the two-stage telescopic rod for intermittent layer-by-layer grinding and polishing;

[0021] S4: When the ball contacts and interacts with the bottom surface of the docking block, causing the ball to drive the docking rod to drive the connector to move, the movement of the connector drives the air-pushing block to move. When the air-pushing block moves, under the action of the one-way intake valve and the one-way exhaust valve, a negative pressure can be generated in the communication cavity, so that debris particles generated during grinding can be inhaled into the dust collection bag through the dust collection cavity, the dust suction hose, and the dust suction holes for collection. At the same time, the inhaled air can be compressed into the assembly shell. When the ball contacts and interacts with the bottom surface of the rightmost docking block, the moving block can be further moved closer to the stainless steel pipe. At this time, the side wall of the sealing plate is separated from the left port of the wax spraying hose, and the compressed air in the assembly shell can transport the polishing wax oil to the nozzle and spray it onto the weld of the stainless steel pipe.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. Through the cooperative design of structures such as the driving mechanism, rotating block, grinding block, and adjusting mechanism, the present invention drives the rotating block to rotate through the driving mechanism. When the rotating block rotates, it drives the two grinding blocks to perform circumferential movement to grind and polish the weld bead at the weld of the stainless steel pipe. At the same time, when the rotating block rotates, it drives the annular mounting block to move to the right and rotate through the transmission mechanism. During the process of the annular mounting block moving to the right and rotating, it can drive the docking rod to move and perform circumferential rotation at the same time. When the docking rod moves, it drives the ball to contact the bottom surfaces of the three docking blocks in sequence. Under the limiting action of the limiting mechanism on the moving block, when the ball contacts the bottom surfaces of the three docking blocks in sequence, the docking rod can drive the connector to move and push the moving block to intermittently move closer to the stainless steel pipe. The moving block can drive the mounting shell to drive the grinding block to move and contact the surface of the weld bead of the stainless steel pipe through the two-stage telescopic rod for intermittent layer-by-layer grinding and polishing. When the grinding block grinds, it is not easy to bounce and jump under the reaction force of contacting the surface of the weld bead, and the grinding and polishing effect on the weld of the stainless steel pipe is good. Moreover, the grinding block performs intermittent layer-by-layer grinding and polishing on the weld bead, which can avoid the high temperature generated during long-term contact and fitting grinding of the grinding block from easily burning the surface of the stainless steel pipe, and avoid affecting the quality and aesthetics of the stainless steel pipe.

[0024] 2. Through the cooperative design of structures such as balls, docking rods, connectors, moving blocks, and wax spraying mechanisms, in the present invention, when the balls come into contact with the bottom surface of the docking blocks and interact with each other, as the balls drive the docking rods to drive the connectors to move, the movement of the connectors drives the air-pushing blocks to move. When the air-pushing blocks move, under the action of the one-way intake valve and the one-way exhaust valve, a negative pressure can be generated in the communication cavity, so that the debris particles generated during grinding can be sucked into the dust collection cloth bag through the dust collection cavity, the dust suction hose, and the dust suction holes for collection, improving the environmental protection performance. At the same time, the inhaled air can be compressed into the assembly shell. When the balls come into contact with the bottom surface of the rightmost docking block and interact with each other, the moving block can be further close to the stainless steel pipe. At this time, the side wall of the sealing plate is separated from the left port of the wax spraying hose, and the compressed air in the assembly shell can transport the polishing wax oil to the nozzle and spray it onto the weld of the stainless steel pipe, improving the polishing efficiency and avoiding the problem that the operator needs to manually apply wax oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the present invention;

[0026] Figure 2 is a front view sectional structural diagram of the installation cylinder of the present invention;

[0027] Figure 3 is a front view sectional structural diagram of the installation cylinder of the present invention from another angle;

[0028] Figure 4 is an exploded view of the annular mounting block, annular mounting frame, and annular connection shell of the present invention;

[0029] Figure 5 is a schematic structural diagram of the drive mechanism, rotating block, annular mounting block, and transmission mechanism of the present invention;

[0030] Figure 6 is a right view structural diagram of the limiting mechanism of the present invention;

[0031] Figure 7 is a partial front view sectional structural diagram of the installation cylinder, adjustment mechanism, rotating block, and grinding block of the present invention;

[0032] Figure 8 is a front view sectional structural diagram of the annular mounting block of the present invention;

[0033] Figure 9 is a partial front view sectional structural diagram of the wax spraying mechanism of the present invention.

[0034] In the figure: 1, base; 2, mounting cylinder; 3, rotating block; 4, grinding block; 5, driving mechanism; 51, driving ring; 52, driving motor; 53, driving wheel; 6, adjusting mechanism; 7, fixture; 61, annular mounting block; 62, annular connecting frame; 63, annular connecting shell; 64, docking block; 65, mounting cavity; 66, docking rod; 67, moving block; 68, two-stage telescopic rod; 69, mounting shell; 610, ball; 611, compression spring seat; 8, transmission mechanism; 81, lead screw; 82, annular track; 83, roller; 9, limiting mechanism; 91, limiting card plate; 92, spring catch block; 93, extrusion rod; 94, first tension spring rod; 10, wax spraying mechanism; 101, assembly shell; 102, communication cavity; 103, dust collection cavity; 104, dust collection cloth bag; 105, dust suction hole; 106, dust suction hose; 107, air pushing block; 108, nozzle; 109, wax spraying hose; 11, connecting piece; 12, screw; 13, vertical rod; 14, spring sleeve; 15, sealing plate. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] As Figures 1 to 9 shown, the present invention provides a polishing device for stainless steel pipe welding, including a base 1. The middle part of the upper surface of the base 1 is fixedly installed with an annular mounting cylinder 2. The right side of the inner cavity of the mounting cylinder 2 is movably installed with an annular rotating block 3 through a bearing. Two grinding blocks 4 are symmetrically arranged on the upper and lower sides of the inner ring of the rotating block 3. The right side of the outer surface of the mounting cylinder 2 is provided with a driving mechanism 5 for driving the rotating block 3 to rotate. The left side of the inner cavity of the mounting cylinder 2 is provided with an adjusting mechanism 6 for driving the grinding block 4 to move into contact with the weld bead on the outer surface of the stainless steel pipe. Two fixtures 7 for fixing the stainless steel pipe are symmetrically arranged on the left and right sides of the upper surface of the base 1;

[0037] The adjusting mechanism 6 includes an annular mounting block 61 disposed inside the mounting cylinder 2 on the left side of the rotating block 3. The right side of the outer surface of the annular mounting block 61 is movably sleeved with an annular connecting frame 62 through a bearing. The outer ring of the annular connecting frame 62 is slidably mounted with an annular connecting shell 63. Three vertically sliding docking blocks 64 are horizontally arranged side by side in the upper part of the inner cavity of the annular connecting shell 63. Two mounting cavities 65 are symmetrically formed on the upper and lower sides of the rotating block 3. One end of a docking rod 66 is vertically slidably mounted in the inner cavity of the mounting cavity 65 close to the inner cavity of the mounting cylinder 2, and the other end of the docking rod 66 is vertically slidably mounted in the inner cavity of the mounting cavity 65 far from the inner cavity of the mounting cylinder 2. A moving block 67 is fixedly mounted on the right side wall of the moving block 67. A two-stage telescopic rod 68 is fixedly mounted at the right end of the two-stage telescopic rod 68, and an installation shell 69 is fixedly mounted at the right end of the two-stage telescopic rod 68. A transmission mechanism 8 for driving the annular mounting block 61 to rotate and move is provided between the left side of the rotating block 3 and the inner cavity of the mounting cylinder 2. A limiting mechanism 9 is provided between the left side of the rotating block 3 and the inner cavity of the mounting cavity 65. A wax spraying mechanism 10 is provided between the inner cavity of the moving block 67 and the installation shell 69;

[0038] Among them, the outer surface of the annular connecting shell 63 is fixedly connected to the inner cavity of the mounting cylinder 2. One end of the docking rod 66 penetrates to the outside of the inner cavity of the mounting cavity 65, and a ball 610 is movably mounted at one end of the docking rod 66. The outer surface of the ball 610 is movably connected to the bottom surface of the docking block 64. A connecting member 11 is provided at the other end of the docking rod 66. Two compression spring seats 611 are symmetrically and vertically fixedly mounted on the side of the inner cavity of the mounting cavity 65 far from the inner cavity of the mounting cylinder 2. The output end of the compression spring seat 611 is fixedly connected to the outer surface of the moving block 67. The outer surface of the installation shell 69 is slidably connected to the inner ring of the rotating block 3 through a vertically fixedly mounted connecting rod. The outer surface of the grinding block 4 is fixedly connected to the inner cavity of the installation shell 69.

[0039] During use, pass the stainless steel steel pipe to be polished through the inner cavities of the rotating block 3, the annular mounting block 61 and the fixture 7, so that the weld of the stainless steel steel pipe is located between the two grinding blocks 4. Clamp and fix the stainless steel steel pipe through the fixture 7, and then adjust the height positions of the three docking blocks 64 in sequence, so that the height position of the docking block 64 on the right is lower than the height position of the docking block 64 on the left. Drive the rotating block 3 to rotate through the driving mechanism 5. When the rotating block 3 rotates, it drives the two grinding blocks 4 to move circumferentially to grind and polish the weld bead at the weld of the stainless steel steel pipe. At the same time, when the rotating block 3 rotates, it drives the annular mounting block 61 to move to the right and rotate through the transmission mechanism 8. During the process of the annular mounting block 61 moving to the right and rotating, it can drive the docking rod 66 to move and rotate circumferentially at the same time. When the docking rod 66 is moving, it drives the ball 610 to contact the bottom surfaces of the three docking blocks 64 in sequence. Under the limiting action of the limiting mechanism 9 on the moving block 67, when the ball 610 contacts the three docking blocks 64 in sequence, it can make the docking rod 66 drive the connecting piece 11 to move and push the moving block 67 to approach the stainless steel steel pipe intermittently. The moving block 67 can drive the mounting shell 69 through the two-stage telescopic rod 68 to drive the grinding block 4 to move and contact the surface of the weld bead of the stainless steel steel pipe for intermittent layer-by-layer grinding and polishing. When the grinding block 4 grinds, it is not easy to bounce under the reaction force of contacting the surface of the weld bead, and the grinding and polishing effect on the weld of the stainless steel steel pipe is good. Moreover, the grinding block 4 performs intermittent layer-by-layer grinding and polishing on the weld bead, which can avoid the high temperature generated when the grinding block 4 contacts and fits for a long time from easily burning the surface of the stainless steel pipe and avoid affecting the quality and aesthetics of the stainless steel pipe.

[0040] It should be noted that when the moving block 67 drives the grinding block 4 to perform intermittent layer-by-layer grinding and polishing on the surface of the weld bead of the stainless steel steel pipe, the wax spraying mechanism 10 can collect the debris particles generated by grinding, improving the environmental protection performance. At the same time, in the final grinding stage, it can automatically spray the polishing wax oil onto the grinding and polishing area of the weld of the stainless steel steel pipe, improving the polishing efficiency and avoiding the need for operators to manually apply the wax oil.

[0041] As Figure 5 shown, the driving mechanism 5 includes a driving ring 51 fixedly sleeved on the outer ring of the rotating block 3, a driving motor 52 fixedly installed on the upper surface of the outer surface of the installation cylinder 2, and a driving wheel 53 fixedly sleeved on the output shaft end of the driving motor 52 for driving the driving ring 51 to rotate.

[0042] During use, when the driving motor 52 operates, it drives the driving wheel 53 to rotate. When the driving wheel 53 rotates, it can drive the driving ring 51 to drive the rotating block 3 to rotate. Thus, when the rotating block 3 rotates, it can drive the two grinding blocks 4 to rotate to grind and polish the weld bead at the weld of the stainless steel steel pipe.

[0043] As Figure 5As shown in the figure, the transmission mechanism 8 includes two lead screws 81 symmetrically and movably installed on the left side wall of the rotating block 3 through bearings for driving the movement and rotation of the annular mounting block 61, an annular track 82 fixedly installed on the left side of the inner cavity of the mounting cylinder 2, and rollers 83 fixedly sleeved on the left ends of the lead screws 81; among them, the outer ring of the roller 83 is movably connected to the inner ring of the annular track 82.

[0044] During use, when the rotating block 3 rotates, it can drive the two lead screws 81 to move circumferentially. When the lead screws 81 move circumferentially, they can drive the annular mounting block 61 to rotate on its own. At the same time, under the action of the rollers 83 and the annular track 82, when the lead screws 81 move circumferentially, they can rotate on their own. When the lead screws 81 rotate on their own, they can drive the annular mounting block 61 to move, so that the annular mounting block 61 can rotate while moving.

[0045] As Figure 6 shown in the figure, the limiting mechanism 9 includes two limiting clamping plates 91 symmetrically distributed on the front and rear sides of the inner cavity of the mounting cavity ⑥⑤, two spring clamping blocks 92 symmetrically and fixedly installed on the lower parts of the front and rear sides of the moving block 67, and a pressing rod 93 arranged between the limiting clamping plate 91 and the inner cavity of the mounting cavity 65; among them, the spring clamping block 92 is adapted to the limiting clamping plate 91, one side of the outer surface of the pressing rod 93 is movably connected to one side of the outer surface of the limiting clamping plate 91, the right end of the pressing rod 93 is fixedly connected to the left side wall of the rotating block 3, and the outer surface of the limiting clamping plate 91 is connected to the inner cavity of the mounting cavity 65 through two first tension spring rods 94 symmetrically distributed up and down.

[0046] During use, when the annular mounting block 61 moves to the right, it can drive the limiting clamping plate 91 to move. Under the action of the pressing rod 93, the limiting clamping plate 91 can be combined with the spring clamping block 92, the moving block 67 can be limited, and the moving block A can only move in the direction of the stainless steel pipe.

[0047] As Figure 7 shown in the figure, three screws 12 are horizontally and equidistantly threadedly installed on the upper surface of the annular connection shell 63. The bottom ends of the screws 12 are movably connected to the upper surface of the docking block 64 through bearings, and the top ends of the screws 12 penetrate above the mounting cylinder 2

[0048] During use, the operator can adjust the height position of the docking block 64 through the screws 12, so that the height positions of the three docking blocks 64 decrease one by one from left to right, which is convenient for the grinding block 4 to move three times to intermittently grind and polish the weld bead of the stainless steel pipe.

[0049] As Figure 8As shown, the connecting member 11 includes a connecting plate disposed between the docking rod 66 and the moving block 67, and two second tension spring rods symmetrically disposed between the inner cavity of the installation cavity 65 near the inner side of the inner cavity of the installation cylinder 2 and the outer surface of the connecting plate; wherein, the outer surface of the connecting plate is movably connected to the outer surface of the moving block 67, and the elastic force of the second tension spring rod can drive the connecting plate away from the moving block 67.

[0050] During use, under the driving of the elastic force of the second tension spring rod, it is convenient for the ball 610 to contact the bottom surface of the docking block 64. When the ball 610 contacts and interacts with the bottom surface of the docking block 64, the ball 610 can drive the docking rod 66 to move. When the docking rod 66 moves, the moving block 67 can be pushed to move through the connecting plate.

[0051] As Figure 1 shown, the fixture 7 includes columns symmetrically and vertically fixedly installed on the left and right sides of the upper surface of the base 1. The top ends of the columns are fixedly installed with an annular placement shell. Two electric telescopic rods are symmetrically arranged in the inner cavity of the placement shell. The output ends of the electric telescopic rods are fixedly installed with clamping blocks for clamping and fixing stainless steel steel pipes.

[0052] During use, the electric telescopic rod can be used to drive the clamping block to move, and the stainless steel steel pipe can be clamped and fixed by the two clamping blocks approaching each other.

[0053] As Figure 8 and Figure 9 shown, the wax spraying mechanism 10 includes an assembly shell 101 fixedly installed in the inner cavity of the moving block 67. The inner cavity of the assembly shell 101 is filled with polishing wax oil. A communication cavity 102 is opened on the side of the inner cavity of the assembly shell 101 close to the connecting member 11. A dust collection cavity 103 is opened on the right side of the communication cavity 102. A dust collection cloth bag 104 is fixedly installed in the inner cavity of the dust collection cavity 103. Dust suction holes 105 are opened on the opposite surfaces of the two installation shells 69. A dust suction hose 106 is used to connect the dust suction holes 105 and the dust collection cloth bag 104. A pushing air block 107 that moves up and down in the communication cavity 102 is used to transport the air in the inner cavity of the dust collection cavity 103 to the inner cavity of the assembly shell 101. Sprayers 108 are symmetrically and fixedly installed on the front and rear side walls of the installation shell 69. A wax spraying hose 109 is used to connect the sprayers 108 and the inner cavity of the assembly shell 101;

[0054] Among them, one end of the air pushing block 107 extends outside the inner cavity of the communication cavity 102, and one end of the air pushing block 107 is fixedly connected to the connecting member 11. The air in the dust collection cavity 103 is introduced into the communication cavity 102 through a one-way intake valve. The air in the communication cavity 102 is introduced into the inner cavity of the assembly shell 101 through a one-way exhaust valve. A "U"-shaped sealing plate 15 is slidably installed up and down in the inner cavity of the assembly shell 101. The side wall of the sealing plate 15 can block the left port of the wax spraying hose 109. A vertical rod 13 is vertically and fixedly installed on the outer surface of the sealing plate 15 away from the communication cavity 102. One end of the vertical rod 13 penetrates outside the inner cavity of the moving block 67, and one end of the vertical rod 13 is movably connected to the inner cavity of the installation cavity 65. A spring sleeve 14 is fixedly sleeved on the outer surface of the vertical rod 13, and the other end of the spring sleeve 14 is fixedly connected to the outer surface of the moving block 67.

[0055] During use, when the ball 610 contacts and interacts with the bottom surface of the docking block 64, the ball 610 drives the docking rod 66 to drive the connecting member 11 to move. When the connecting member 11 moves to drive the air pushing block 107 to move, the air pushing block 107 can generate negative pressure in the communication cavity 102 under the action of the one-way intake valve and the one-way exhaust valve. Thus, the debris particles generated during grinding can be sucked into the dust collection bag 104 through the dust collection cavity 103, the dust suction hose 106, and the dust suction holes 105 for collection. At the same time, the inhaled air can be compressed into the assembly shell 101. When the ball 610 contacts and interacts with the bottom surface of the rightmost docking block 64, the moving block 67 can be further moved closer to the stainless steel pipe. At this time, the side wall of the sealing plate 15 is separated from the left port of the wax spraying hose 109, and the compressed air in the assembly shell 101 can transport the polishing wax oil to the nozzle 108 and spray it onto the weld of the stainless steel pipe.

[0056] A polishing method for stainless steel pipe welding includes the following usage steps:

[0057] S1: Pass the stainless steel pipe to be polished through the inner cavities of the rotating block 3, the annular mounting block 61, and the fixture 7, so that the weld of the stainless steel pipe is located between the two grinding blocks 4, and clamp and fix the stainless steel pipe through the fixture 7;

[0058] S2: The operator can adjust the height position of the docking block 64 through the screw 12, so that the height positions of the three docking blocks 64 decrease one by one from left to right;

[0059] S3: Start the operation of the drive motor 52 to drive the drive wheel 53 to rotate. When the drive wheel 53 rotates, it can drive the drive ring 51 to drive the rotating block 3 to rotate. When the rotating block 3 rotates, it can drive the two grinding blocks 4 to rotate. At the same time, when the rotating block 3 rotates, it can drive the two lead screws 81 to move circumferentially. When the lead screws 81 move circumferentially, they can drive the annular mounting block 61 to rotate. At the same time, under the action of the rollers 83 and the annular track 82, the lead screws 81 can rotate when moving circumferentially. When the lead screws 81 rotate, they can drive the annular mounting block 61 to move, so that the annular mounting block 61 can rotate while moving. When the annular mounting block 61 moves to the right, it can drive the limit clamping plate 91 to move. Under the action of the extrusion rod 93, the limit clamping plate 91 can be combined with the spring clamping block 92 to limit the moving block 67, so that the moving block 67 can only move towards the direction of the stainless steel pipe. During the process of the annular mounting block 61 moving to the right and rotating, it can drive the docking rod 66 to move while rotating circumferentially. When the docking rod 66 moves, it drives the balls 610 to contact the bottom surfaces of the three docking blocks 64 in sequence. When the balls 610 contact the three docking blocks 64 in sequence, the docking rod 66 can drive the connecting piece 11 to move and push the moving block 67 to approach the stainless steel pipe intermittently. The moving block 67 can drive the mounting shell 69 to drive the grinding block 4 to move through the two-stage telescopic rod 68 and contact the surface of the weld bead of the stainless steel pipe for intermittent layer-by-layer grinding and polishing;

[0060] S4: When the balls 610 contact the bottom surfaces of the docking blocks 64 and interact with each other, causing the balls 610 to drive the docking rod 66 to drive the connecting piece 11 to move, the movement of the connecting piece 11 drives the air-pushing block 107 to move. When the air-pushing block 107 moves, under the action of the one-way intake valve and the one-way exhaust valve, a negative pressure can be generated in the communication cavity 102, so that the debris particles generated during grinding can be sucked into the dust collection cloth bag 104 through the dust collection cavity 103, the dust suction hose 106 and the dust suction holes 105 for collection. At the same time, the inhaled air can be compressed into the assembly shell 101. When the balls 610 contact the bottom surface of the rightmost docking block 64 and interact with each other, the moving block 67 can be further close to the stainless steel pipe. At this time, the side wall of the sealing plate 15 is separated from the left port of the wax spraying hose 109, and the compressed air in the assembly shell 101 can transport the polishing wax oil to the nozzle 108 and spray it onto the weld of the stainless steel pipe.

[0061] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0062] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polishing device for the welding of stainless steel pipes, characterized in that It includes a base (1). In the middle of the upper surface of the base (1), an annular mounting cylinder (2) is fixedly installed. On the right side of the inner cavity of the mounting cylinder (2), an annular rotating block (3) is movably installed through a bearing. On the upper and lower sides of the inner ring of the rotating block (3), two grinding blocks (4) are symmetrically arranged. On the right side of the outer surface of the mounting cylinder (2), a driving mechanism (5) is provided for driving the rotation of the rotating block (3). On the left side of the inner cavity of the mounting cylinder (2), an adjusting mechanism (6) is provided for driving the grinding block (4) to move into contact with the weld bead on the outer surface of the stainless steel pipe. On the left and right sides of the upper surface of the base (1), two clamps (7) are symmetrically arranged for fixing the stainless steel pipe; The adjusting mechanism (6) includes an annular mounting block (61) arranged on the left side of the rotating block (3) in the inner cavity of the mounting cylinder (2). On the right side of the outer surface of the annular mounting block (61), an annular connecting frame (62) is movably sleeved through a bearing. An annular connecting shell (63) is slidably installed on the outer ring of the annular connecting frame (62). In the upper part of the inner cavity of the annular connecting shell (63), three vertically sliding docking blocks (64) are horizontally arranged side by side. On the upper and lower sides of the rotating block (3), two installation cavities (65) are symmetrically opened. In the inner cavity of the installation cavity (65) near the inner cavity of the mounting cylinder (2), a docking rod (66) is vertically slidably installed. In the inner cavity of the installation cavity (65) far from the inner cavity of the mounting cylinder (2), a moving block (67) is vertically slidably installed. On the right side wall of the moving block (67), a two-stage telescopic rod (68) is fixedly installed. The right end of the two-stage telescopic rod (68) is fixedly installed with an installation shell (69). A transmission mechanism (8) for driving the rotation and movement of the annular mounting block (61) is arranged between the left side of the rotating block (3) and the inner cavity of the mounting cylinder (2). A limiting mechanism (9) is arranged between the left side of the rotating block (3) and the inner cavity of the installation cavity (65). A wax spraying mechanism (10) is arranged in the inner cavity of the moving block (67) and on the installation shell (69). On the upper surface of the annular connecting shell (63), three screws (12) are horizontally and equidistantly installed in a threaded manner. The bottom end of the screw (12) is movably connected to the upper surface of the docking block (64) through a bearing. The top end of the screw (12) penetrates above the mounting cylinder (2). The height position of the docking block (64) is adjusted by the screw (12) so that the height positions of the three docking blocks (64) decrease one by one from left to right; Among them, the outer surface of the annular connecting shell (63) is fixedly connected to the inner cavity of the mounting cylinder (2). One end of the docking rod (66) penetrates to the outside of the inner cavity of the mounting cavity (65), and a ball (610) is movably installed at one end of the docking rod (66). The outer surface of the ball (610) is movably connected to the bottom surface of the docking block (64). The other end of the docking rod (66) is provided with a connecting piece (11). On the side of the inner cavity of the mounting cavity (65) far from the inner cavity of the mounting cylinder (2), two compression spring seats (611) are symmetrically and vertically fixedly installed. The output end of the compression spring seat (611) is fixedly connected to the outer surface of the moving block (67). The outer surface of the mounting shell (69) is slidably connected to the inner ring of the rotating block (3) through a vertically fixedly installed connecting rod. The outer surface of the grinding block (4) is fixedly connected to the inner cavity of the mounting shell (69).

2. The polishing device for stainless steel pipe welding according to claim 1, characterized in that: The driving mechanism (5) includes a driving ring (51) fixedly sleeved on the outer ring of the rotating block (3), a driving motor (52) fixedly installed on the upper part of the outer surface of the mounting cylinder (2), and a driving wheel (53) fixedly sleeved on the output shaft end of the driving motor (52) for driving the driving ring (51) to rotate.

3. A polishing device for stainless steel pipe welding according to claim 2, wherein: The transmission mechanism (8) includes two lead screws (81) symmetrically and movably installed on the left side wall of the rotating block (3) through bearings for driving the annular mounting block (61) to move and rotate, an annular track (82) fixedly installed on the left side of the inner cavity of the mounting cylinder (2), and a roller (83) fixedly sleeved on the left end of the lead screw (81); among them, the outer ring of the roller (83) is movably connected to the inner ring of the annular track (82).

4. A polishing device for stainless steel pipe welding according to claim 3, characterized in that: The limiting mechanism (9) includes two limiting clamping plates (91) symmetrically distributed on the front and rear sides of the inner cavity of the mounting cavity (65), two spring clamping blocks (92) symmetrically and fixedly installed on the lower parts of the front and rear sides of the moving block (67), and a pressing rod (93) arranged between the limiting clamping plate (91) and the inner cavity of the mounting cavity (65); among them, the spring clamping block (92) is adapted to the limiting clamping plate (91). One side of the outer surface of the pressing rod (93) is movably connected to one side of the outer surface of the limiting clamping plate (91). The right end of the pressing rod (93) is fixedly connected to the left side wall of the rotating block (3). The outer surface of the limiting clamping plate (91) is connected to the inner cavity of the mounting cavity (65) through two first stretching spring rods (94) symmetrically distributed up and down.

5. A polishing device for stainless steel pipe welding according to claim 4, characterized in that: The connecting piece (11) includes a connecting plate arranged between the docking rod (66) and the moving block (67), and two second stretching spring rods symmetrically arranged between the side of the inner cavity of the mounting cavity (65) close to the inner cavity of the mounting cylinder (2) and the outer surface of the connecting plate; among them, the outer surface of the connecting plate is movably connected to the outer surface of the moving block (67), and the elastic force of the second stretching spring rod can drive the connecting plate away from the moving block (67).

6. The polishing device for stainless steel pipe welding according to claim 5, characterized in that: The fixture (7) includes columns symmetrically and vertically fixed on the left and right sides of the upper surface of the base (1). The top of the column is fixedly installed with an annular placement shell. Two electric telescopic rods are symmetrically arranged in the inner cavity of the placement shell. The output end of the electric telescopic rod is fixedly installed with a clamping block for clamping and fixing the stainless steel pipe.

7. A polishing device for stainless steel pipe welding according to claim 6, characterized in that: The wax spraying mechanism (10) includes an assembly shell (101) fixedly installed in the inner cavity of the moving block (67), a communication cavity (102) opened on one side of the inner cavity of the assembly shell (101) close to the connecting piece (11), a dust collecting cavity (103) opened on the right side of the communication cavity (102), a dust collecting cloth bag (104) fixedly installed in the inner cavity of the dust collecting cavity (103), a dust suction hole (105) opened on the opposite surfaces of the two mounting shells (69), a dust suction hose (106) for connecting the dust suction hole (105) and the dust collecting cloth bag (104), a pushing air block (107) moving up and down in the communication cavity (102) for transporting the air in the inner cavity of the dust collecting cavity (103) to the inner cavity of the assembly shell (101), spray heads (108) symmetrically and fixedly installed on the front and rear side walls of the mounting shell (69), and a wax spraying hose (109) for connecting the spray heads (108) and the inner cavity of the assembly shell (101); Wherein, one end of the pushing air block (107) extends outside the inner cavity of the communication cavity (102), and one end of the pushing air block (107) is fixedly connected with the connecting piece (11). The air in the dust collecting cavity (103) is introduced into the communication cavity (102) through a one-way intake valve. The air in the communication cavity (102) is introduced into the inner cavity of the assembly shell (101) through a one-way outlet valve. A "U"-shaped sealing plate (15) is slidably installed up and down in the inner cavity of the assembly shell (101). The side wall of the sealing plate (15) can block the left port of the wax spraying hose (109). A vertical rod (13) is vertically and fixedly installed on the outer surface of the sealing plate (15) away from the communication cavity (102). One end of the vertical rod (13) penetrates outside the inner cavity of the moving block (67), and one end of the vertical rod (13) is movably connected with the inner cavity of the installation cavity (65). A spring sleeve (14) is fixedly sleeved on the outer surface of the vertical rod (13). The other end of the spring sleeve (14) is fixedly connected with the outer surface of the moving block (67).

8. A polishing method for stainless steel pipe welding according to claim 7, characterized in that, It includes the following usage steps: S1: Pass the stainless steel pipe to be polished through the inner cavities of the rotating block (3), the annular mounting block (61) and the fixture (7), so that the weld of the stainless steel pipe is located between the two grinding blocks (4), and clamp and fix the stainless steel pipe through the fixture (7); S2: The operator can adjust the height position of the docking block (64) through the screw rod (12), so that the height positions of the three docking blocks (64) decrease one by one from left to right; S3: Start the operation of the drive motor (52) to drive the drive wheel (53) to rotate. When the drive wheel (53) rotates, it can drive the drive ring (51) to drive the rotating block (3) to rotate. When the rotating block (3) rotates, it can drive the two grinding blocks (4) to rotate. At the same time, when the rotating block (3) rotates, it can drive the two lead screws (81) to move circumferentially. When the lead screws (81) move circumferentially, they can drive the annular mounting block (61) to rotate. At the same time, under the action of the rollers (83) and the annular track (82), the lead screws (81) can rotate when moving circumferentially. When the lead screws (81) rotate, they can drive the annular mounting block (61) to move, so that the annular mounting block (61) can rotate while moving. When the annular mounting block (61) moves to the right, it can drive the limit clamping plate (91) to move. Under the action of the extrusion rod (93), the limit clamping plate (91) can be combined with the spring catch (92), which can limit the moving block (67), so that the moving block (67) can only move in the direction of the stainless steel pipe. During the process of the annular mounting block (61) moving to the right and rotating, it can drive the docking rod (66) to move and rotate circumferentially at the same time. When the docking rod (66) moves, it drives the ball (610) to contact the bottom surfaces of the three docking blocks (64) in sequence. When the ball (610) contacts the three docking blocks (64) in sequence, the docking rod (66) can drive the connecting piece (11) to move and push the moving block (67) to approach the stainless steel pipe intermittently. The moving block (67) can drive the mounting shell (69) through the two-stage telescopic rod (68) to drive the grinding block (4) to move and contact the surface of the stainless steel pipe weld bead for intermittent layer-by-layer grinding and polishing; S4: When the ball (610) contacts and interacts with the bottom surface of the docking block (64), causing the ball (610) to drive the docking rod (66) to drive the connector (11) to move, the movement of the connector (11) drives the air-pushing block (107) to move. When the air-pushing block (107) moves, under the action of the one-way intake valve and the one-way exhaust valve, a negative pressure can be generated in the communication cavity (102), so that the debris particles generated during grinding can be sucked into the dust collection bag (104) through the dust collection cavity (103), the dust suction hose (106), and the dust suction hole (105) for collection. At the same time, the inhaled air can be compressed into the assembly shell (101). When the ball (610) contacts and interacts with the bottom surface of the rightmost docking block (64), the moving block (67) can be further moved closer to the stainless steel pipe. At this time, the side wall of the sealing plate 15 is separated from the left port of the wax spraying hose (109), and the compressed air in the assembly shell (101) can transport the polishing wax oil to the nozzle (108) and spray it onto the weld of the stainless steel pipe.

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