Continuous grinding device for welding seam of metal pipe fitting

Abstract

The utility model discloses a continuous polishing device for a welding seam of a metal pipe fitting, which belongs to the technical field of related equipment for machining metal components and comprises a workbench, an end positioning unit, a movable limiting unit and a polishing unit. The workbench has corresponding supporting force, and a portal frame is slidably installed on the upper end face in the length direction of the workbench. Supporting side plates are mounted at one end of the upper end surface; the end positioning unit comprises a three-jaw chuck which is rotationally installed on the inner side of the supporting side plate through a rotary disc. The output end of the driving motor is fixedly connected with the rotating disc and provides rotating driving force for the rotating disc; the movable limiting unit is installed on the side, close to the supporting side plate, of the portal frame. The three-jaw chuck is provided with two clamping working faces, and the two clamping working faces are concentric with the three-jaw chuck. The polishing unit is installed on the side, away from the supporting side plate, of the portal frame, the positioning position is synchronously adjusted along with the polishing operation position, positioning and rotating operation of a machined part is convenient, and the welding seam polishing continuity and automation degree are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal component processing related equipment, in particular to a metal pipe welding seam continuous grinding device. Background Art

[0002] When using metal pipes, multiple welds are required to connect pipes of different lengths and then weld or assemble them into different metal component frames, such as metal brackets and wall frames. Pipes of different lengths often have more than one weld seam. In the prior art, the weld seams must be hand-grinded, or the metal pipes must be positioned using a workbench and then ground sequentially using hand-held grinding equipment. However, the positioning position is not easy to adjust according to the grinding operation position at any time, and the metal pipes are not easy to rotate during grinding, making the rotation and positioning of the metal pipes relatively cumbersome. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the existing technology, the utility model provides a continuous grinding device for metal pipe welds, the positioning position of which is adjusted synchronously with the grinding operation position, and the positioning and rotation operations of the workpiece are convenient, thereby improving the continuity and automation of weld grinding.

[0004] The technical solution adopted by the utility model is as follows: a continuous grinding device for metal pipe welds, comprising a workbench, an end positioning unit, a movable limiting unit and a grinding unit; the workbench has corresponding supporting force, and the upper end surface is slidably installed with a gantry along the length direction of the workbench; a supporting side plate is installed at one end of the upper end surface; the end positioning unit comprises a three-jaw chuck, which is mounted on the inner side of the supporting side plate through rotation of a turntable; a driving motor, the output end of which is fixedly connected to the turntable and provides a rotational driving force to the turntable; the movable limiting unit is mounted on the side of the gantry close to the supporting side plate; it has two clamping working surfaces, and the two clamping working surfaces are concentric with the three-jaw chuck; the grinding unit is mounted on the side of the gantry away from the supporting side plate.

[0005] Furthermore, the movable limiting unit includes two lifting frames, two clamping plates and a lifting drive; the two lifting frames move toward each other along the two opposite side walls of the gantry; the two clamping plates are respectively installed on the lifting frames, and the opposite side walls of the two clamping plates are respectively concave to form an arc-shaped clamping working surface; and the lifting drive is arranged on the gantry, including two lifting ends that move toward each other, and are respectively fixedly connected to the corresponding lifting frames.

[0006] Furthermore, the grinding unit includes a fixed upper plate, which is installed at the top of the side wall of the gantry away from the supporting side plate and has corresponding supporting force; a lifting part, which is assembled on the fixed upper plate and the lifting end is located below the fixed upper plate; and a grinding assembly, which is connected to the lifting end of the lifting part through a connecting plate.

[0007] Furthermore, sliding grooves are provided on both sides of the workbench, and the sliding grooves extend along the length direction of the workbench. The bottoms on both sides of the gantry can slide along the sliding grooves respectively through sliding support blocks.

[0008] Furthermore, the clamping plate extends a predetermined length along the central axis direction of the three-jaw chuck.

[0009] After adopting the above structure, the beneficial effects of the utility model are as follows:

[0010] (1) The end limit unit is set to position one end of the workpiece and drive the workpiece to rotate; the end limit unit cooperates with the movable limit unit to position the workpiece, and the positioning and rotation operations are convenient, which is convenient for grinding the annular weld;

[0011] (2) The gantry is set up and moves along the length of the workbench. The grinding unit can be carried to grind the welds at multiple different positions on the workpiece. The clamping plates installed on the gantry and capable of moving in opposite directions (approaching or moving away from each other) can always position the workpiece near the grinding operation position to ensure the stability of the workpiece during grinding. There is no need to disassemble the positioning mechanism for repositioning, thereby improving the continuity and automation of grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0013] Figure 1 This is a schematic diagram of the overall structure of a continuous grinding device for metal pipe welds proposed by the utility model;

[0014] Figure 2 This is a partial cross-sectional view of a metal pipe weld continuous grinding device proposed in the utility model;

[0015] Figure 3 This is a schematic diagram of the overall structure from another angle of a continuous grinding device for metal pipe welds proposed by the utility model.

[0016] In the attached drawings: 1. workbench, 2. gantry, 3. supporting side plate, 4. three-jaw chuck, 5. driving motor, 6. turntable, 7. lifting frame, 8. clamping plate, 9. lifting end, 10. fixed upper plate, 11. lifting part, 12. grinding assembly, 13. sliding groove, 14. sliding support block, 15. limiting long rod, 16. rotating motor, 17. partition, 18. limiting column, 19. bidirectional screw. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. Example 1

[0019] like Figure 1-Figure 3 As shown, a continuous grinding device for metal pipe welds includes a workbench 1, an end positioning unit, a movable limiting unit and a grinding unit; the workbench 1 has corresponding supporting force, and the upper end surface is slidably installed with a gantry 2 along the length direction of the workbench 1; a supporting side plate 3 is installed at one end of the upper end surface; sliding grooves 13 are arranged on both sides of the workbench 1, and the sliding grooves 13 extend along the length direction of the workbench 1, and the bottoms on both sides of the gantry 2 can slide along the sliding grooves 13 respectively through sliding support blocks 14. Here, preferably, a limiting long rod 15 is arranged between the two ends of the sliding groove 13, and one end of the sliding support block 14 is movably penetrated by the limiting long rod 15, and at the same time, the other end of the sliding support block 14 slides along one side of the sliding groove 13, positioning the gantry 2 at two points on the same side of the gantry 2, thereby improving the stability of the gantry 2 when moving, and the grinding unit The element is arranged on the side of the gantry 2 away from the supporting side plate 3. The grinding unit moves with the gantry 2 and performs grinding operations at different positions to ensure the continuity of the grinding operation. Specifically, the grinding unit includes a fixed upper plate 10, which is installed on the top of the side wall of the gantry 2 away from the supporting side plate 3 and has corresponding supporting force; a lifting part 11, which is assembled on the fixed upper plate, and the lifting end 9 is located below the fixed upper plate 10; a grinding assembly 12 (including a rotating motor and a grinding wheel, the rotating motor can be installed on the connecting plate, and the grinding wheel is fixedly connected to the output end of the rotating motor. After starting the rotating motor, the output end of the rotating motor rotates to drive the grinding wheel to rotate, and perform corresponding grinding operations), which is connected to the lifting end 9 of the lifting part 11 through the connecting plate. When grinding, the height of the grinding wheel of the grinding assembly 12 can be adjusted through the lifting end 9 to grind the weld. Example 2

[0020] Based on Example 1, the end positioning unit includes a three-jaw chuck 4, which is rotatably mounted on the inner side of the supporting side plate 3 via a turntable 6 and is fixed at one end of the worktable 1 to clamp one end of the workpiece; a drive motor 5, the output end of which is fixedly connected to the turntable 6 and provides rotational driving force to the turntable 6. When the drive motor 5 is started, the output end of the drive motor 5 rotates, driving the turntable 6 and the three-jaw chuck 4 on the turntable 6 to rotate;

[0021] The movable limiting unit is installed on the side of the gantry 2 close to the supporting side plate 3, and has two clamping working surfaces, which are concentric with the three-jaw chuck 4; one end of the workpiece is positioned on the three-jaw chuck 4, and the other end passes through the two clamping working surfaces. By adjusting the distance between the clamping working surfaces, a limiting channel is defined, so that the workpiece passes through the limiting channel and is limited near the grinding unit. The clamping working surface below can have a certain supporting effect. When the three-jaw chuck 4 rotates, the workpiece rotates with the three-jaw chuck 4. After adjusting the position of the weld processing, the distance between the clamping working surfaces can be adjusted to clamp or limit the outer wall of the pipe, and the workpiece is positioned and limited near the grinding operation and at the end.

[0022] In this embodiment, the movable limiting unit includes two lifting frames 7, two clamping plates 8 and a lifting drive; the two lifting frames 7 move toward each other along the two opposite side walls of the gantry 2; the two clamping plates 8 are respectively installed on the lifting frames 7, and the opposite side walls of the two clamping plates 8 are respectively concave to form an arc-shaped clamping working surface, and the clamping plates extend a predetermined length along the central axis direction of the three-jaw chuck 4; and the lifting drive is arranged on the gantry 2, including two lifting ends 9 that move toward each other, and are respectively fixedly connected to the corresponding lifting frames 7.

[0023] Among them, the two opposite side walls of the gantry 2 are respectively provided with lifting grooves, and a partition 17 is set in the middle of the inner part of the lifting groove. A limit column 18 is set in one lifting groove and passes through the corresponding partition 17. A bidirectional screw 19 is rotatably installed in the other lifting groove, passes through the corresponding partition 17 and is rotatably connected to the corresponding partition 17. A rotating motor 16 is installed at the top of the corresponding lifting groove where the bidirectional screw 19 is installed, and the output end of the rotating motor 16 is rotatably connected to one end of the bidirectional screw 19. The bidirectional screw 19 is assembled with positive and negative threads in the upper and lower parts separated by the corresponding partition 17. The movable ends are respectively installed above and below the corresponding partition 17, and the movable ends are threadedly connected to the corresponding bidirectional screw 19 parts. At the same time, the limit column 18 is movably installed with auxiliary movable ends on the upper and lower parts of the corresponding partition 17, which rise and fall synchronously with the movable ends at the corresponding height. After the rotation motor 16 is started, the bidirectional screw 19 rotates, and the two moving ends on the bidirectional screw 19 move closer to or farther away from each other. At this time, the two lifting frames 7 connected to the moving end and the auxiliary moving end (the two ends of the lifting frames 7 are respectively connected to the moving end and the auxiliary moving end at the same height) carry the clamping plates closer to or farther away from each other, adjusting the distance between the two clamping working surfaces.

[0024] Based on the above embodiment, the specific working principle of a metal pipe weld continuous grinding device of the present application is as follows:

[0025] When grinding the welds of metal pipes with many welds, first, one end of the metal pipe is positioned by the three-jaw chuck 4, and the other end of the metal pipe passes through the limiting channel of the clamping plate. The clamping plate and the three-jaw chuck are concentric, so that when the clamping plate approaches or moves away, the pipe always passes through along the central axis and is coaxial with the metal pipe, so that the clamping plate and the three-jaw chuck 4 cooperate with each other to position the pipe;

[0026] Before the clamping plates clamp or limit at the appropriate position outside the metal pipe, move the gantry 2 so that the grinding unit is in the grinding operation position, then adjust the distance between the clamping plates, clamp on the outer wall of the workpiece or contact the outer wall of the workpiece without clamping, when grinding, adjust the grinding operation height so that the grinding wheel contacts the weld, and rotate the grinding wheel to perform the grinding operation. After grinding for a certain period of time, increase the distance between the clamping plates, raise the grinding wheel, start the drive motor 5 to rotate the workpiece, and grind different positions of the same weld.

[0027] After grinding one weld, the grinding wheel is raised, the distance between the clamping plates is increased, the gantry 2 is moved along the sliding groove 13, the grinding operation position is determined, and the above operation is repeated to grind the workpiece.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents. In short, if those skilled in the art are inspired by the present invention and, without departing from the purpose of the present invention, design structures and embodiments similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A continuous grinding device for metal pipe welds, characterized in that: include: The workbench has corresponding supporting force, and a gantry is installed on the upper end surface along the length direction of the workbench; a supporting side plate is installed at one end of the upper end surface; The end positioning unit includes a three-jaw chuck, which is mounted on the inner side of the supporting side plate through the rotation of the turntable; a drive motor, the output end of which is fixedly connected to the turntable and provides rotational driving force to the turntable; The movable limit unit is installed on the side of the gantry close to the supporting side plate; it has two clamping working surfaces, and the two clamping working surfaces are concentric with the three-jaw chuck; The grinding unit is installed on the side of the gantry away from the supporting side plate.

2. A metal pipe weld continuous grinding device according to claim 1, characterized in that: The movable limiting unit includes: Two lifting frames move in opposite directions along two opposite side walls of the gantry; Two clamping plates are respectively mounted on the lifting frame, and the opposite side walls of the two clamping plates are respectively concave to form an arc-shaped clamping working surface; and a lifting drive, which is arranged on the gantry and includes two lifting ends that move in opposite directions and are respectively fixedly connected to corresponding lifting frames.

3. The continuous grinding device for metal pipe welds according to claim 1, characterized in that: The grinding unit includes a fixed upper plate, which is installed at the top of the side wall of the gantry away from the supporting side plate and has corresponding supporting force; a lifting part, which is assembled on the fixed upper plate and the lifting end is located below the fixed upper plate; and a grinding assembly, which is connected to the lifting end of the lifting part through a connecting plate.

4. The continuous grinding device for metal pipe welds according to claim 1, characterized in that: Sliding grooves are provided on both sides of the workbench, and the sliding grooves extend along the length direction of the workbench. The bottoms on both sides of the gantry can slide along the sliding grooves respectively through sliding support blocks.

5. The continuous grinding device for metal pipe welds according to claim 2, characterized in that: The clamping plate extends along the central axis direction of the three-jaw chuck by a predetermined length.

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