Workpiece machining weld joint treatment device

Abstract

The invention relates to the technical field of metal grinding, in particular to a workpiece machining weld joint treatment device which comprises a bottom plate, a limiting unit and a grinding mechanism. A steel pipe is clamped through a clamping set, so that the axis of the steel pipe and the axis of a rotating cylinder are collinear, and then the steel pipe is propped and limited through cooperation of lower pressing rollers on three lower pressing plates, so that a grinding plate uniformly grinds a welding seam of the steel pipe, and the problem that the grinding plate nonuniformly grinds the steel pipe is avoided; according to the grinding device, through the cleaning brush arranged on the lower pressing plate, the cleaning brush can clean metal filings attached to a welding seam in time after the welding seam is ground through the grinding plate, and the problem that in the grinding process, the metal filings are attached to the welding seam, and consequently the position of the welding seam is scratched is solved; and meanwhile, the problem of accelerated corrosion of the welding seam due to the fact that metal chippings are attached to the welding seam subsequently is solved.

Description

Technical Field

[0001] The invention relates to the technical field of metal grinding, in particular to a workpiece processing weld seam processing device. Background Art

[0002] Metal steel pipe welding is widely used in oil and gas pipelines. Two short steel pipes are welded together to form a long steel pipe to extend the length of the steel pipe. At the same time, in order to facilitate the transportation of oil and natural gas, the diameter of the metal steel pipe is usually 24 inches to 48 inches (600 mm to 1220 mm) or larger. The welding slag, oxides and other residues produced during the welding process will reduce the strength and corrosion resistance of the welded joint. The weld position between the two sections of steel pipes needs to be welded (see Figure 7 ) is ground to remove welding slag oxides and reduce stress concentration at the weld.

[0003] The existing grinding operation of the weld seam on the steel pipe is mainly performed by the staff using a hand-held polishing machine to grind the weld seam of the steel pipe all around.

[0004] The existing grinding process for steel pipe welds has the following shortcomings: due to the large diameter of the steel pipe, it is difficult for workers to grind the welds at the lower part of the steel pipe, and it is difficult to achieve uniform grinding of the weld position during the grinding process of the steel pipe weld. It is easy to have problems of over-grinding or under-grinding during the grinding process, making the surface at the weld position uneven, thereby reducing the strength and durability of the weld position. Secondly, the metal debris generated during the grinding process is easy to adhere to the steel pipe, and the metal debris attached to the weld position will accelerate the corrosion process of the weld. Summary of the invention

[0005] Based on this, it is necessary to provide a workpiece processing weld processing device to solve the above technical problems.

[0006] The present application provides a workpiece processing weld processing device, comprising: a base plate, wherein the upper end surface of the base plate is slidably provided with two side plates symmetrically distributed on the left and right, and the two side plates are connected to a hydraulic cylinder 1 on one side away from each other, and the hydraulic cylinder 1 is connected to the base plate through a rectangular plate, and two U-shaped bars symmetrically distributed on the left and right and with openings facing upward are slidably provided on the base plate, and the two U-shaped bars are located between the two side plates, and a hydraulic cylinder 2 is provided on the right side plate for pushing the corresponding U-shaped bar to move left and right, and the fixed end of the hydraulic cylinder 2 is fixedly connected to the corresponding side plate, and a limiting unit for limiting the position of the steel pipe is provided together with the base plate and the side plate.

[0007] The limiting unit includes a cylinder, the upper end surfaces of the two vertical sections of the U-shaped bar are jointly fixed with a cylinder, the cylinder and the corresponding side plates are jointly provided with a clamping group, the upper end surface of the bottom plate is provided with a centering group, and the end surfaces of the two cylinders close to each other are both provided with annular and closed sliding grooves.

[0008] The two cylinders are commonly provided with a grinding mechanism for grinding the welds of steel pipes, the grinding mechanism comprises an electric slider, three circumferentially distributed electric sliders are slidably arranged in the sliding groove, a rotating plate is fixedly arranged on the electric slider, a rotating group is commonly arranged on the rotating plate and the corresponding side cylinder, a horizontal rod is slidably penetrated on the rotating plate, a clamping block 1 is fixedly arranged on the right end face of the left horizontal rod, a clamping block 2 is fixedly arranged on the left end face of the right horizontal rod, a clamping group is commonly arranged between the clamping block 1 and the corresponding clamping block 2, a fixing plate is fixedly arranged on the end face of the clamping block 1 and the clamping block 2 close to the corresponding cylinder, a pressing group is commonly arranged between the two opposite fixing plates on the left and right, the pressing group comprises a pressing plate, and a grinding plate is arranged on the pressing plate.

[0009] According to a preferred embodiment, the centering group includes a rotating shaft, the upper end surface of the base plate is rotatably provided with a rotating shaft, a gear is fixedly sleeved on the rotating shaft, and racks meshing with the gears are fixedly provided on the two U-shaped bars through connecting blocks.

[0010] According to a favorable embodiment, the clamping group includes a pushing plate, three pushing plates are fixedly arranged on the opposite surfaces of the two side plates, and the three pushing plates on the same side plate are evenly distributed circumferentially about the axis of the cylinder, the pushing plates are divided into a horizontal section, an inclined section and a horizontal section from left to right, and the inclined section of the pushing plate on the right side plate is inclined from left to right in a direction away from the cylinder, three pushing rods corresponding to the corresponding pushing plates are slid through the cylinder, an arc-shaped clamping plate is fixedly arranged on the end surface of the push rod close to the axis of the cylinder, and a spring 1 mounted on the corresponding pushing rod is fixedly arranged between the clamping plate and the cylinder.

[0011] According to a favorable embodiment, the rotating group includes an arc plate, an arc plate is fixedly arranged between two adjacent rotating plates, four transmission shafts distributed in a matrix are fixedly arranged on one side of the rotating plate close to the cylinder, and a rotating wheel is rotatably sleeved on the transmission shaft.

[0012] According to a favorable embodiment, a positioning group is commonly provided on the rotating plate and the corresponding cylinder, and the positioning group includes a positioning bar, positioning bars are slidably provided on the opposite back surfaces of the two left and right relatively rotating plates, connecting plates are fixedly provided on the two ends far away from each other of the left and right relatively horizontal rods, a spring 2 is commonly fixedly provided between the connecting plate and the rotating plate, a connecting bar is hingedly provided between the connecting plate and the positioning bar, three circumferentially distributed positioning grooves are provided on the opposite surfaces of the two cylinders, and a circular plate is fixedly sleeved on the horizontal rod.

[0013] According to a favorable embodiment, the clamping group includes a rectangular groove, and a rectangular groove is provided on the clamping block one. The rectangular groove is located on the end face of the clamping block one close to the cylinder and passes through the right end face of the clamping block one. Two eight-shaped guide plates are fixedly provided on the right end face of the clamping block one. Clamping grooves are provided on the inner walls on opposite sides of the rectangular groove. A cylindrical groove corresponding to the position of the clamping groove is provided on the clamping block two. A clamping column is slidably provided in the cylindrical groove, and the end face of the clamping column cooperating with the corresponding clamping groove is an arc surface. A spring three is fixedly provided between the clamping column and the inner wall of the corresponding cylindrical groove.

[0014] According to a favorable embodiment, the pressing group includes a transverse rod, a transverse rod is fixedly arranged on the fixed plate on the left side, a through hole opposite to the position of the transverse rod is opened on the fixed plate on the right side, a sliding sleeve on the transverse rod is provided with two vertical plates, and the left vertical plate is fixedly connected to the fixed plate, a sliding sleeve on the transverse rod is provided with a sliding block located between the two vertical plates, four springs are respectively fixedly arranged between the sliding block and the two vertical plates, a support rod is fixedly arranged on the end surface of the sliding block close to the axis of the cylinder, a movable plate is hingedly provided on the sliding sleeve on the support rod, a pushing strip is hinged between the movable plate and the corresponding vertical plate, a pressing rod is fixedly arranged on the end surface of the movable plate close to the axis of the cylinder, and a pressing plate is fixedly arranged on the other end of the pressing rod.

[0015] According to an advantageous embodiment, four lower pressing rollers distributed in a matrix are rotatably arranged on each lower pressing plate, and a grinding plate, a grinding plate and a cleaning brush are fixedly arranged in sequence on the three lower pressing plates.

[0016] In summary, the present invention includes at least one of the following beneficial effects: 1. In the present invention, the axis of the steel pipe and the axis of the cylinder are made colinear by the clamping group, and the rotating group drives the grinding plate to evenly grind the weld of the steel pipe throughout the whole week, thereby avoiding the problem of over-grinding or under-grinding during the grinding process. In the present invention, a cleaning brush is arranged on the lower pressure plate, so that the cleaning brush can promptly clean the metal chips attached to the weld after the grinding plate grinds the weld, thereby avoiding the problem of scratches on the weld position caused by metal chips attached to the weld during the grinding process, and at the same time avoiding the problem of accelerated corrosion of the weld due to subsequent metal debris attached to the weld.

[0017] 2. In the present invention, the steel pipe is clamped by the clamping group so that the axis of the steel pipe is collinear with the axis of the rotating cylinder, and then the steel pipe is pressed and limited by the cooperation between the lower pressure rollers on the three lower pressure plates, so that the grinding plate can grind the weld of the steel pipe evenly, avoiding the problem of uneven grinding of the steel pipe by the grinding plate.

[0018] 3. In the present invention, during the docking process of the clamping group, the two fixed plates opposite to each other approach each other for driving, pushing the lower pressure plate to press against the steel pipe, providing downward pressure for the grinding operation of the grinding plate, avoiding the problem of insufficient grinding of the weld by the grinding plate during the grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 A three-dimensional structural schematic diagram of a workpiece processing weld seam processing device and a steel pipe provided according to an embodiment of the present invention is shown.

[0021] Figure 2 A schematic diagram of the three-dimensional structure of a clamping group, a pressing group and a bottom plate provided according to an embodiment of the present invention is shown.

[0022] Figure 3 A schematic diagram of the three-dimensional structure of a cylinder, a push rod and a clamping plate provided according to an embodiment of the present invention is shown.

[0023] Figure 4 The embodiment provided according to the present invention shows Figure 3 A magnified view of the structure in the middle.

[0024] Figure 5 A partial cross-sectional view of the three-dimensional structure of a clamping block 1, a clamping block 2 and a clamping column provided according to an embodiment of the present invention is shown.

[0025] Figure 6 A right side view of a cylinder, a rotating plate and a U-shaped bar provided according to an embodiment of the present invention is shown.

[0026] Figure 7 A schematic diagram of the three-dimensional structure of a steel pipe provided according to an embodiment of the present invention is shown.

[0027] The above drawings include the following reference numerals:

[0028] 1. Bottom plate; 2. Side plate; 3. Rectangular plate; 4. U-shaped bar; 5. Limiting unit; 50. Cylinder; 51. Clamping group; 510. Push plate; 511. Push rod; 512. Clamping plate; 513. Spring 1; 52. Centering group; 520. Rotating shaft; 521. Gear; 522. Rack; 6. Grinding mechanism; 60. Rotating plate; 61. Rotating group; 610. Arc plate; 611. Transmission shaft; 612. Rotating wheel; 62. Horizontal rod; 620. Clamping block 1; 621. Clamping block 2; 622. Fixed plate; 63. Clamping group ;630, rectangular groove;631, snap-in column;632, spring three;633, snap-in groove;634, guide plate;64, pressing group;640, transverse rod;641, vertical plate;642, sliding block;643, spring four;644, support rod;645, movable plate;646, pressing rod;647, pressing plate;65, positioning group;650, positioning strip;651, connecting plate;652, spring two;653, connecting strip;654, positioning groove;66, pressing roller;660, grinding plate;661, cleaning brush;7, sliding groove. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0030] like Figure 1 and Figure 2 As shown, a workpiece processing weld processing device comprises: a base plate 1, the upper end surface of the base plate 1 is slidably provided with two side plates 2 which are symmetrically distributed on the left and right, the two side plates 2 are connected with a hydraulic cylinder 1 on the side away from each other, the hydraulic cylinder 1 is connected to the base plate 1 through a rectangular plate 3, two U-shaped bars 4 which are symmetrically distributed on the left and right and have openings facing upwards are slidably provided on the base plate 1, the two U-shaped bars 4 are located between the two side plates 2, a hydraulic cylinder 2 which pushes the corresponding U-shaped bar 4 to move left and right is provided on the right side plate 2, the fixed end of the hydraulic cylinder 2 is fixedly connected to the corresponding side plate 2, and a limiting unit 5 for limiting the position of the steel pipe is provided on the base plate 1 and the side plate 2.

[0031] like Figure 1 and Figure 2As shown, the limiting unit 5 includes a cylinder 50, and the upper end surfaces of the two vertical sections of the U-shaped bar 4 are jointly fixed with the cylinder 50, and the cylinder 50 and the corresponding side plate 2 are jointly provided with a clamping group 51, and the upper end surface of the bottom plate 1 is provided with a centering group 52 for centering the left and right clamping groups 51, and the end surfaces of the two cylinders close to each other are both provided with annular and closed sliding grooves 7.

[0032] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the two cylinders 50 are jointly provided with a grinding mechanism 6 for grinding the weld of the steel pipe, and the grinding mechanism 6 includes an electric slider, and three electric sliders distributed in a circle are slidably provided in the sliding groove 7, and a rotating plate 60 is fixedly provided on each of the electric sliders, and a rotating group 61 is jointly provided on the rotating plate 60 and the corresponding side cylinder 50, and a horizontal rod 62 is slidably penetrated on the rotating plate 60, and a clamping block 620 is fixedly provided on the right end surface of the left horizontal rod 62, and a clamping block 1 is fixedly provided on the right end surface of the left horizontal rod 62. A second clamping block 621 is fixedly provided on the left end face of the side horizontal rod 62, a clamping group 63 is commonly provided between the first clamping block 620 and the corresponding second clamping block 621, a fixing plate 622 is fixedly provided on the end face of the first clamping block 620 and the second clamping block 621 close to the corresponding cylinder 50, a pressing group 64 is commonly provided between the two opposite fixing plates 622 on the left and right, the pressing group 64 includes a pressing plate 647, and a grinding plate 660 is provided on the pressing plate 647.

[0033] During work, the staff uses a lifting device (such as a crane) to place the steel pipe between the two cylinders 50, and then the two hydraulic cylinders 1 work to push the corresponding side plates 2 to move, so that the two side plates 2 are respectively pressed against the two end faces of the steel pipe, and then the hydraulic cylinder 2 works to push the corresponding cylinder 50 to move through the right U-shaped bar 4. During the movement of the cylinder 50, the centering group 52 works to make the movement distance of the two cylinders 50 equal. At the same time, the clamping group 51 works to center the steel pipe so that the axis of the steel pipe is colinear with the axis of the cylinder 50. After the center clamping is completed, the cylinder 50 continues to approach so that the clamping group 63 completes the docking. During the docking of the clamping group 63, the lower pressure group 64 works to push the lower pressure plate 647 to press the steel pipe, and at the same time, the grinding plate 660 is close to the weld on the steel pipe. Then the rotating group 61 works to make the grinding plate 660 grind the weld position for a whole week.

[0034] like Figure 2 As shown, the centering group 52 includes a rotating shaft 520, and the upper end surface of the base plate 1 is rotatably provided with the rotating shaft 520, and a gear 521 is fixedly sleeved on the rotating shaft 520. Racks 522 meshing with the gear 521 are fixedly provided on the two U-shaped bars 4 through connecting blocks.

[0035] like Figure 2 , Figure 3 and Figure 6 As shown, the clamping group 51 includes a pushing plate 510, and three pushing plates 510 are fixedly arranged on the opposite surfaces of the two side plates 2, and the three pushing plates 510 on the same side plate 2 are evenly distributed circumferentially about the axis of the cylinder 50. Taking the right pushing plate 510 as an example, the pushing plate 510 is divided into a horizontal section, an inclined section and a horizontal section from left to right, and the inclined section of the pushing plate 510 is inclined from left to right in the direction away from the cylinder 50. Three pushing rods 511 corresponding to the corresponding pushing plates 510 are slidably penetrated on the cylinder 50, and an arc-shaped clamping plate 512 is fixedly arranged on the end surface of the pushing rod 511 close to the axis of the cylinder 50, and a spring 513 mounted on the corresponding pushing rod 511 is fixedly arranged between the clamping plate 512 and the cylinder 50.

[0036] In the initial state, the cylinder 50 is close to the side plate 2 on the corresponding side. During operation, the staff uses lifting equipment such as a crane to place the steel pipe between the two cylinders 50. Then, the hydraulic cylinder works to push the side plate 2 to move. The side plate 2 pushes the cylinder 50 and the U-shaped bar 4 to move synchronously. The movement of the U-shaped bar 4 drives the rack 522 to move synchronously. The engagement between the gear 521 and the two racks 522 makes the moving distances of the two U-shaped bars 4 equal. The two side plates 2 continue to approach each other until the two side plates 2 are close to the steel pipe, completing the limitation of the weld on the steel pipe.

[0037] After the side plate 2 is close to the steel pipe, the second hydraulic cylinder works to push the U-shaped bar 4 to move, and the U-shaped bar 4 drives the corresponding rack 522 to move synchronously. The engagement between the gear 521 and the two racks 522 makes the two racks 522 move the same distance, and the U-shaped bar 4 drives the cylinder 50 to move synchronously, and the cylinder 50 drives the corresponding push rod 511 to move synchronously. The push rod 511 moves and the push plate 510 stops moving. After the push rod 511 moves to contact the inclined section of the push plate 510, the push plate 510 and the corresponding push rod 511 cooperate to make the push rod 511 drive the clamping plate 512 to move in the direction close to the axis of the cylinder 50. After the push rod 511 moves to contact the horizontal section of the push plate 510 away from the corresponding side plate 2, the clamping plate 512 moves to close to the steel pipe. Through the cooperation between the three clamping plates 512, the center clamping of the steel pipe is completed, so that the axis of the steel pipe is in line with the axis of the cylinder 50.

[0038] like Figure 3 and Figure 4 As shown, the rotating group 61 includes an arc plate 610, and an arc plate 610 is fixedly arranged between two adjacent rotating plates 60. Four transmission shafts 611 distributed in a matrix are fixedly arranged on one side of the rotating plate 60 close to the cylinder 50, and a rotating wheel 612 is rotatably sleeved on the transmission shaft 611.

[0039] like Figure 3and Figure 4 As shown, the rotating plate 60 and the corresponding cylinder 50 are jointly provided with a positioning group 65, and the positioning group 65 includes a positioning bar 650, and the positioning bars 650 are slidably provided on the opposite back surfaces of the two left and right relatively rotating plates 60, and the two ends of the left and right relatively horizontal rods 62 that are far away from each other are fixedly provided with connecting plates 651, and a spring 2 652 is jointly fixedly provided between the connecting plate 651 and the rotating plate 60, and a connecting bar 653 is hingedly provided between the connecting plate 651 and the positioning bar 650, and three circumferentially distributed positioning grooves 654 are provided on the opposite surfaces of the two cylinders 50, and a circular plate is fixedly sleeved on the horizontal rod 62.

[0040] In the initial state, the positioning bar 650 is pressed against the cylinder 50, the connecting plate 651 is at a position away from the corresponding rotating plate 60, and the spring 2 652 is stretched and deformed. When working, the three electric sliders on the same cylinder 50 are started synchronously, and the electric slider drives the rotating plate 60 to rotate synchronously around the axis of the cylinder. Through the fixed connection between the rotating plate 60 and the corresponding arc plate 610, the three rotating plates 60 on the same cylinder 50 rotate synchronously. At the same time, through the cooperation between the four rotating wheels 612 on the rotating plate 60, the rotating plates 60 rotate synchronously. The moving trajectory of the movable plate 60 is guided so that the three rotating plates 60 rotate around the axis of the cylinder 50, and the rotating plate 60 drives the positioning bar 650 to rotate synchronously. After the positioning bar 650 rotates to above the positioning groove 654, the elastic force generated by the deformation of the spring 2 652 pushes the positioning bar 650 into the positioning groove 654. The position of the rotating plate 60 is limited by the cooperation between the positioning groove 654 and the positioning bar 650, so that the rotating plates 60 on the two cylinders 50 correspond to each other left and right, which is convenient for the subsequent docking of the clamping group 63.

[0041] After the clamping group 63 completes the clamping, the two left and right opposite cylinders 50 continue to drive the corresponding rotating plates 60 to approach each other, and relative sliding occurs between the rotating plates 60 and the corresponding horizontal rods 62, so that the distance between the connecting plate 651 and the corresponding rotating plate 60 increases, and the connecting plate 651 pulls the positioning bar 650 upward through the connecting bar 653. After the circular plate of the horizontal rod 62 contacts the corresponding rotating plate 60, the positioning bar 650 moves to disengage from the corresponding positioning groove 654, thereby releasing the limit on the rotating plate 60.

[0042] like Figure 2 , Figure 5 and Figure 6As shown, the clamping group 63 includes a rectangular groove 630, and a rectangular groove 630 is provided on the clamping block 1 620. The rectangular groove 630 is located on the end face of the clamping block 1 620 close to the cylinder 50 and passes through the right end face of the clamping block 1 620. Two eight-shaped guide plates 634 are fixedly provided on the right end face of the clamping block 1 620. Clamping grooves 633 are provided on the inner walls on the opposite sides of the rectangular groove 630. A cylindrical groove corresponding to the position of the clamping groove 633 is provided on the clamping block 2 621. A clamping column 631 is slidably provided in the cylindrical groove, and the end face of the clamping column 631 cooperating with the corresponding clamping groove 630 is an arc surface, and a spring 3 632 is fixedly provided between the clamping column 631 and the inner wall of the corresponding cylindrical groove.

[0043] During operation, after completing the center clamping of the steel pipe, the cylinder 50 continues to move, and the cylinder 50 drives the corresponding rotating plate 60 to move synchronously, and the rotating plate 60 drives the horizontal rod 62 to move synchronously, and the two horizontal rods 62 opposite to each other respectively drive the corresponding clamping block 1 620 and the clamping block 2 621 to approach each other, and after the clamping block 2 621 moves to contact with the corresponding guide plate 634, the clamping block 2 621 is limited by the shape matching between the guide plates 634, and then the clamping block 1 620 and the corresponding clamping block 621 are moved to the corresponding guide plate 634. Block 2 621 continues to approach each other, and the clamping block 2 621 moves into the corresponding rectangular groove 630. The elastic force of spring 3 632 pushes the clamping column 631 into the corresponding clamping groove 633, thereby realizing the clamping of the clamping block 1 620 and the clamping block 2 621, so that the clamping block 1 620 and the clamping block 2 621 form a relatively fixed whole. Due to the arc surface of the end face of the clamping column 631, the clamping block 2 621 is pulled out of the corresponding rectangular groove 630 by force during the subsequent process of the cylinders 50 moving away from each other.

[0044] like Figure 2 , Figure 5 and Figure 6As shown, the pressing group 64 includes a transverse rod 640, the transverse rod 640 is fixedly arranged on the left fixed plate 622, a through hole opposite to the position of the transverse rod 640 is opened on the right fixed plate 622, the transverse rod 640 is slidably sleeved with two vertical plates 641, and the left vertical plate 641 is fixedly connected to the fixed plate 622, the transverse rod 640 is slidably sleeved with a sliding block 642 located between the two vertical plates 641, and springs 643 are fixedly arranged between the sliding block 642 and the two vertical plates 641, and the sliding block 642 is close to the circular A support rod 644 is fixedly provided on the end surface on one side of the axis of the cylinder 50, and a movable plate 645 is slidably sleeved on the support rod 644. A pushing bar is hinged between the movable plate 645 and the corresponding vertical plate 641. A lower pressure rod 646 is fixedly provided on the end surface of the movable plate 645 close to the axis of the cylinder 50, and a lower pressure plate 647 is fixedly provided on the other end of the lower pressure rod 646. Four lower pressure rollers 66 distributed in a matrix are rotatably provided on each lower pressure plate 647, and a grinding plate 660, a grinding plate 660 and a cleaning brush 661 are fixedly provided on the three lower pressure plates 647 in sequence.

[0045] During operation, during the process of the clamping group 63 being clamped, the two left and right opposite fixed plates 622 approach each other, the left fixed plate 622 drives the horizontal rod 640 to move synchronously, and the horizontal rod 640 moves to pass through the through hole on the corresponding fixed plate 622 and then continues to move until the right vertical plate 641 contacts the corresponding fixed plate 622, and then the fixed plates 622 on both sides continue to approach each other, and the fixed plates 622 push the corresponding vertical plates 641 to move synchronously, and the spring four 643 is compressed and deformed, and the distance between the vertical plate 641 and the corresponding sliding block 642 is reduced, so that the vertical plate 641 pushes the moving plate 645 to move in the axial direction close to 50 through the pushing bar, and the moving plate 645 drives the lower pressing plate 647 to move through the lower pressing rod 646 The lower pressure plate 647 drives the corresponding lower pressure roller 66 to move synchronously, and the clamping group 63 completes the clamping while the lower pressure roller 66 is pressed down to fit the surface of the steel pipe. The two cylinders 50 opposite to each other continue to approach each other until the positioning group 65 releases the limit on the rotating plate 60. The rotating group 61 drives the horizontal rod 62 to rotate through the rotating plate 60, and the horizontal rod 62 drives the corresponding lower pressure group 64 to rotate synchronously through the clamping group 63, so that the three lower pressure plates 647 rotate synchronously around the axis of the cylinder 50. The lower pressure plate 647 drives the corresponding grinding plate 660 to grind the weld. At the same time, the other lower pressure plate 647 drives the corresponding cleaning brush 661 to clean the weld after grinding.

[0046] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0047] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A workpiece processing weld seam processing device, characterized in that: include: A bottom plate (1), wherein the upper end surface of the bottom plate (1) is slidably provided with two side plates (2) symmetrically distributed on the left and right, and the two side plates (2) are connected to a hydraulic cylinder 1 on the side away from each other, and the hydraulic cylinder 1 is connected to the bottom plate (1) through a rectangular plate (3), and two U-shaped bars (4) symmetrically distributed on the left and right and with openings facing upward are slidably provided on the bottom plate (1), and the two U-shaped bars (4) are located between the two side plates (2), and a hydraulic cylinder 2 is provided on the right side plate (2) for pushing the corresponding U-shaped bar (4) to move left and right, and the fixed end of the hydraulic cylinder 2 is fixedly connected to the corresponding side plate (2), and a limiting unit (5) for limiting the position of the steel pipe is provided on the bottom plate (1) and the side plate (2); The limiting unit (5) comprises a cylinder (50), the upper end surfaces of the two vertical sections of the U-shaped strip (4) are fixedly provided with the cylinder (50), the cylinder (50) and the corresponding side plate (2) are provided with a clamping group (51), the upper end surface of the bottom plate (1) is provided with a centering group (52), and the end surfaces of the two cylinders (50) close to each other are both provided with an annular and closed sliding groove (7); The two cylinders (50) are provided with a grinding mechanism (6) for grinding the weld of the steel pipe. The grinding mechanism (6) comprises an electric slider. Three electric sliders are slidably arranged in a sliding groove (7) and are distributed in a circle. A rotating plate (60) is fixedly arranged on each of the electric sliders. The rotating plate (60) and the corresponding side cylinder (50) are provided with a rotating group (61). A horizontal rod (62) is slidably penetrated on the rotating plate (60). A clamping block 1 (620) is fixedly arranged on the right end surface of the left horizontal rod (62). The right horizontal rod (62) is provided with a clamping block 1 (620). A clamping block 2 (621) is fixedly provided on the left end face of the clamping block 1 (620), a clamping group (63) is commonly provided between the clamping block 1 (620) and the corresponding clamping block 2 (621), a fixing plate (622) is fixedly provided on the end face of the clamping block 1 (620) and the clamping block 2 (621) on the side close to the corresponding cylinder (50), a pressing group (64) is commonly provided between the two fixing plates (622) opposite to each other on the left and right, the pressing group (64) includes a pressing plate (647), and a grinding plate (660) is provided on the pressing plate (647).

2. A workpiece processing weld seam processing device according to claim 1, characterized in that: The centering group (52) comprises a rotating shaft (520), the upper end surface of the bottom plate (1) is rotatably provided with the rotating shaft (520), a gear (521) is fixedly sleeved on the rotating shaft (520), and racks (522) meshing with the gear (521) are fixedly provided on the two U-shaped bars (4) via connecting blocks.

3. A workpiece processing weld seam processing device according to claim 1, characterized in that: The clamping group (51) comprises a pushing plate (510), and three pushing plates (510) are fixedly arranged on the opposite surfaces of the two side plates (2), and the three pushing plates (510) on the same side plate (2) are evenly distributed circumferentially about the axis of the cylinder (50), and the pushing plate (510) located on the right side plate (2) is divided into a horizontal section, an inclined section and a horizontal section from left to right, and the inclined section of the pushing plate (510) is inclined from left to right in a direction away from the cylinder (50), and three pushing rods (511) corresponding to the corresponding pushing plates (510) are slidably penetrated on the cylinder (50), and an arc-shaped clamping plate (512) is fixedly arranged on the end surface of the pushing rod (511) close to the axis of the cylinder (50), and a spring (513) sleeved on the corresponding pushing rod (511) is fixedly arranged between the clamping plate (512) and the cylinder (50).

4. A workpiece processing weld seam processing device according to claim 1, characterized in that: The rotating group (61) comprises an arc-shaped plate (610), wherein the arc-shaped plate (610) is fixedly arranged between two adjacent rotating plates (60), and four transmission shafts (611) distributed in a matrix are fixedly arranged on one side of the rotating plate (60) close to the cylinder (50), and a rotating wheel (612) is rotatably sleeved on the transmission shaft (611).

5. The workpiece processing weld seam processing device according to claim 1, characterized in that: The rotating plate (60) and the corresponding cylinder (50) are jointly provided with a positioning group (65), and the positioning group (65) includes a positioning bar (650). The opposite back surfaces of the two left and right relatively rotating plates (60) are both slidably provided with positioning bars (650), and the two ends of the left and right relatively horizontal rods (62) that are far away from each other are both fixedly provided with connecting plates (651), a spring 2 (652) is jointly fixedly provided between the connecting plate (651) and the rotating plate (60), and a connecting bar (653) is jointly hinged between the connecting plate (651) and the positioning bar (650), and the opposite surfaces of the two cylinders (50) are each provided with three circumferentially distributed positioning grooves (654), and a circular plate is fixedly sleeved on the horizontal rod (62).

6. A workpiece processing weld seam processing device according to claim 1, characterized in that: The clamping group (63) comprises a rectangular groove (630), the clamping block 1 (620) is provided with a rectangular groove (630), the rectangular groove (630) is located at the end face of the clamping block 1 (620) close to the cylinder (50) and passes through the right end face of the clamping block 1 (620), two guide plates (634) in an eight-shaped shape are fixedly arranged on the right end face of the clamping block 1 (620), the inner walls on both sides of the rectangular groove (630) are provided with clamping grooves (633), the clamping block 2 (621) is provided with a cylindrical groove corresponding to the position of the clamping groove (633), a clamping column (631) is slidably arranged in the cylindrical groove, and the end face of the clamping column (631) matching with the corresponding clamping groove (633) is an arc surface, and a spring 3 (632) is fixedly arranged between the clamping column (631) and the inner wall of the corresponding cylindrical groove.

7. A workpiece processing weld seam processing device according to claim 1, characterized in that: The pressing group (64) includes a transverse rod (640), the transverse rod (640) is fixedly arranged on the left fixed plate (622), a through hole opposite to the position of the transverse rod (640) is opened on the right fixed plate (622), the transverse rod (640) is slidably sleeved with two vertical plates (641), and the left vertical plate (641) is fixedly connected to the fixed plate (622), the transverse rod (640) is slidably sleeved with a sliding block (642) located between the two vertical plates (641), and the sliding block (642) is slidably sleeved with the two vertical plates (641). Springs (643) are fixedly arranged between the vertical plates (641), a support rod (644) is fixedly arranged on the end surface of the sliding block (642) close to the axis of the cylinder (50), a moving plate (645) is slidably sleeved on the support rod (644), a pushing bar is hinged between the moving plate (645) and the corresponding vertical plate (641), a pressing rod (646) is fixedly arranged on the end surface of the moving plate (645) close to the axis of the cylinder (50), and a pressing plate (647) is fixedly arranged on the other end of the pressing rod (646).

8. A workpiece processing weld seam processing device according to claim 7, characterized in that: Four lower pressing rollers (66) arranged in a matrix are rotatably arranged on each lower pressing plate (647), and a grinding plate (660), a grinding plate (660) and a cleaning brush (661) are fixedly arranged in sequence on the three lower pressing plates (647).

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