Positioning mechanism of double-stand-column type welding positioner

Abstract

The utility model discloses a positioning mechanism of a double-column type welding positioner, which relates to the technical field of double-column type welding positioners and comprises a workbench base, a supporting seat is rotatably mounted on the workbench base, and a workbench is fixedly mounted at the top of the supporting seat. A positioning assembly used for fixing a workpiece is arranged in the workbench, a downward pressing assembly is arranged at the top of the workbench, and a pressing plate assembly used for positioning the workpiece is fixedly installed on the downward pressing assembly. The second motor drives the screw rod in the workbench to rotate, the sliding seat slides along the sliding groove under the action of the screw rod, a workpiece is clamped and fixed through the clamping block, then a lapped weldment is placed on the workpiece, the height of the supporting frame is adjusted through the hydraulic rod according to the height of the lapped weldment, and then the lapped weldment is placed on the supporting frame. And the pressing plate is pressed on the top of the lapped weldment, so that the lapped weldment is fixed, and the situation that the position of the lapped weldment deviates during welding, and the welding effect is affected is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of a double-column type welding positioner, in particular to a positioning mechanism of a double-column type welding positioner. Background Art

[0002] The double-column welding positioner is a positioner that integrates the functions of flipping or tilting and rotating. The flipping and rotating are driven by two axes respectively. The worktable that clamps the workpiece can not only rotate around its own axis, but also tilt or flip around another axis. It can adjust the welds at various positions on the weldment to a horizontal or "ship-shaped" easy-to-weld position for welding. The existing welding positioner has insufficient welding angle coordination and needs to be manually adjusted again. The semi-manual adjustment welding method will have a delay effect on the welding point and affect the welding effect.

[0003] CN 215091564 U discloses a double-column welding positioner, comprising a positioner body and a welding mechanism arranged on the positioner body, wherein the welding mechanism comprises columns symmetrically distributed on both sides of the positioner body, a horizontal plate fixedly arranged on the top of the column, an electric slide fixedly arranged on one side of the horizontal plate, a connecting rod fixedly arranged on the bottom of the electric slide, a connecting seat rotatably connected to the bottom of the connecting rod, a first motor drivingly connected to the connecting seat arranged on the connecting rod, and a slide fixedly arranged on one side of the connecting seat. The welding positioner is provided with a welding mechanism, and the output shaft of the first motor can drive the connecting seat to rotate, thereby adjusting the inclination angle of welding on the connecting seat, which has high flexibility, can adapt to the requirements of welding arcs of different workpieces, can improve the matching angle between welding and workpiece, make the inclination posture of welding consistent with the inclination posture of workpiece, and ensure the quality of subsequent welding.

[0004] However, the workpiece is fixed on the workbench of the welding positioner only by the clamping claws. When welding multiple parts together, the clamping claws can only fix one of the weldments but not the other weldments. Therefore, the position of the overlapping weldments is easily shifted during welding, affecting the welding effect. Utility Model Content

[0005] In order to overcome the above-mentioned defects existing in the prior art, the utility model provides a positioning mechanism of a double-column welding positioner.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a positioning mechanism of a double-column welding positioner, including a workbench base, a support seat is rotatably mounted on the workbench base, a workbench is fixedly mounted on the top of the support seat, a positioning component for fixing the workpiece is provided in the workbench, a pressing component is provided on the top of the workbench, and a pressure plate component for positioning the workpiece is fixedly mounted on the pressing component.

[0007] Furthermore, a first bevel gear is fixedly mounted on the outer wall of the support seat, a first motor is disposed on the side of the support seat, and a second bevel gear matching with the first bevel gear is fixedly mounted on the power output shaft of the first motor.

[0008] Furthermore, the positioning assembly includes four groups of screws, and four groups of mounting grooves distributed in a circumferential array are provided at the bottom of the workbench. The four groups of screws are rotatably installed in the mounting grooves, and the rotation directions of the four groups of screws are symmetrical in pairs. A slide seat is installed on the four groups of screws, and a slide slot matching the slide seat is provided at the top of the workbench. The slide seat and the slide slot are slidably connected, and a clamping block is installed on the top of the slide seat.

[0009] Furthermore, a groove is provided at the axis center of the top of the support seat, a motor bracket is fixedly installed in the groove, a second motor is fixedly installed on the motor bracket, a driving gear is fixedly installed on the power output shaft of the second motor, and a driven gear matching the driving gear is fixedly installed on the rotating shaft of the four groups of screws close to the axis center of the workbench, and the driving gear and the driven gear are both bevel gears.

[0010] Furthermore, the pressing assembly includes a fixing frame, which is fixedly mounted on the rear side wall of the workbench base, and a plurality of guide slide rods are slidably mounted on the top of the fixing frame, and a supporting frame is fixedly mounted on the top of the guide slide rods, and a hydraulic rod is fixedly mounted on the side wall of the fixing frame away from the workbench base, and a power output end of the hydraulic rod is fixedly connected to the bottom of the fixing frame, and a pressure plate assembly is provided at one end of the supporting frame close to the workbench base.

[0011] Furthermore, the pressure plate assembly includes a pressure plate seat, which is fixedly mounted on the bottom of the support frame. A pressure plate is rotatably mounted on the bottom of the pressure plate seat, and the rotation axis of the pressure plate is the same as the rotation axis of the workbench.

[0012] The beneficial effect of the utility model is that when fixing the workpiece, the screw inside the workbench is driven to rotate by the second motor, and under the action of the screw, the slide slides along the slide groove, and the workpiece on the workbench is clamped and fixed by the clamping block, and then the overlapping weldments are placed on the fixed workpiece, and according to the height of the overlapping weldments, the height of the support frame is adjusted by the hydraulic rod so that the pressure plate is pressed on the top of the overlapping weldments, thereby fixing the overlapping weldments, thereby preventing the overlapping weldments from shifting in position during welding and affecting the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is the front view of the utility model;

[0016] Figure 3 It is a left view of the utility model;

[0017] Figure 4 for Figure 3 Schematic diagram of the cross-section structure in the AA direction;

[0018] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of the workbench in the middle BB direction.

[0019] In the figure: 1. workbench base, 2. support base, 3. workbench, 4. first bevel gear, 5. first motor, 6. second bevel gear, 7. screw, 8. mounting groove, 9. slide seat, 10. slide groove, 11. clamping block, 12. groove, 13. motor bracket, 14. second motor, 15. driving gear, 16. driven gear, 17. fixed frame, 18. guide slide rod, 19. support frame, 20. hydraulic rod, 21. pressure plate seat, 22. pressure plate. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the technical solution of the utility model, the utility model is further described below in conjunction with the accompanying drawings. Obviously, the accompanying drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, without paying any creative work, other embodiments can be obtained based on this drawing and embodiment, which all belong to the protection scope of the utility model.

[0021] according to Figure 1-5 As shown, a positioning mechanism of a double-column welding positioner includes a workbench base 1, a support base 2 is rotatably mounted on the workbench base 1, a workbench 3 is fixedly mounted on the top of the support base 2 by bolts, a positioning assembly for fixing the workpiece is provided in the workbench 3, a pressing assembly is provided on the top of the workbench 3, and a pressure plate assembly for positioning the workpiece is fixedly mounted on the pressing assembly.

[0022] In this embodiment, a first bevel gear 4 is fixedly installed on the outer wall of the support seat 2, a first motor 5 is provided on the side of the support seat 2, and a second bevel gear 6 matched with the first bevel gear 4 is fixedly installed on the power output shaft of the first motor 5. The second bevel gear 6 is driven to rotate by the first motor 5, and the support seat 2 is rotated on the workbench base 1 under the cooperation of the second bevel gear 6 and the first bevel gear 4.

[0023] In this embodiment, the positioning assembly includes four groups of screws 7. Four groups of mounting grooves 8 distributed in a circumferential array are provided at the bottom of the workbench 3. The four groups of screws 7 are rotatably installed in the mounting grooves 8. The rotation directions of the four groups of screws 7 are symmetrical in pairs. A slide seat 9 is installed on the four groups of screws 7 through threaded cooperation. A slide groove 10 matching the slide seat 9 is provided on the top of the workbench 3. The slide seat 9 and the slide groove 10 are slidably connected. A clamping block 11 is installed on the top of the slide seat 9 through bolt cooperation. When the screw 7 rotates, the clamping blocks 11 move toward each other under the cooperation of the screw 7 and the slide seat 9.

[0024] In this embodiment, a groove 12 is opened at the axis center of the top of the support seat 2, and a motor bracket 13 is fixedly installed in the groove 12. A second motor 14 is fixedly installed on the motor bracket 13, and a driving gear 15 is fixedly installed on the power output shaft of the second motor 14. A driven gear 16 matching the driving gear 15 is fixedly installed on the rotating shaft of the four groups of screw rods 7 close to the axis center of the workbench 3. Both the driving gear 15 and the driven gear 16 are bevel gears. The driving gear 15 is driven to rotate by the second motor 14, and the four groups of screw rods 7 are driven to rotate synchronously under the cooperation of the driving gear 15 and the driven gear 16.

[0025] In this embodiment, the pressing assembly includes a fixed frame 17, which is fixedly mounted on the rear side wall of the workbench base 1. A plurality of groups of guide slide bars 18 are slidably mounted on the top of the fixed frame 17. Preferably, there are two groups of guide slide bars 18. A support frame 19 is fixedly mounted on the top of the guide slide bars 18. A hydraulic rod 20 is fixedly mounted on the side wall of the fixed frame 17 away from the workbench base 1. The power output end of the hydraulic rod 20 is fixedly connected to the bottom of the fixed frame 17. A pressure plate assembly is provided at one end of the support frame 19 close to the workbench base 1. The height of the support frame 19 is adjusted by the hydraulic rod 20 according to the height of the overlapped weldment so as to be suitable for welding workpieces of different heights.

[0026] In this embodiment, the pressure plate assembly includes a pressure plate seat 21, which is fixedly mounted on the bottom of the support frame 19. A pressure plate 22 is rotatably mounted on the bottom of the pressure plate seat 21. The rotation axis of the pressure plate 22 is the same as the rotation axis of the workbench 3. When fixing the workpiece to be welded, the pressure plate 22 is pressed on the top of the overlapping weldment, thereby fixing the overlapping weldment. When the workbench 3 rotates, the pressure plate 22 rotates synchronously, thereby preventing the pressure plate 22 and the workpiece from rotating relative to each other, causing the position of the workpiece to change.

[0027] When the utility model is in use, the workpiece is first placed on the top of the workbench 3, and then the second motor 14 is started. The screw 7 inside the workbench 3 is driven to rotate by the second motor 14. Under the action of the screw 7, the slide 9 slides along the slide groove 10, and the workpiece on the workbench 3 is clamped and fixed by the clamping block 11. Then, the overlapping weldment is placed on the fixed workpiece. According to the height of the overlapping weldment, the height of the support frame 19 is adjusted by the hydraulic rod 20, so that the pressure plate 22 is pressed on the top of the overlapping weldment, thereby fixing the overlapping weldment, thereby preventing the overlapping weldment from shifting in position during welding and affecting the welding effect. When welding the circumferential weld, the support seat 2 is driven to rotate on the workbench base 1 by the first motor 5, and the workbench 3 will rotate synchronously with the support seat 2, so that the workpiece on the workbench 3 rotates, and the pressure plate 22 rotates synchronously under the action of friction, thereby preventing the pressure plate 22 and the workpiece from rotating relative to each other and causing the position of the workpiece to change.

[0028] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A positioning mechanism for a double-column welding positioner, comprising a workbench base (1), characterized in that: A support seat (2) is rotatably mounted on the workbench base (1); a workbench (3) is fixedly mounted on the top of the support seat (2); a positioning assembly for fixing a workpiece is provided inside the workbench (3); a pressing assembly is provided on the top of the workbench (3); a pressure plate assembly for positioning the workpiece is fixedly mounted on the pressing assembly.

2. The positioning mechanism of a double-column welding positioner according to claim 1, characterized in that: A first bevel gear (4) is fixedly mounted on the outer wall of the support seat (2), a first motor (5) is provided on the side of the support seat (2), and a second bevel gear (6) matching the first bevel gear (4) is fixedly mounted on the power output shaft of the first motor (5).

3. The positioning mechanism of a double-column welding positioner according to claim 2, characterized in that: The positioning assembly comprises four groups of screw rods (7). The bottom of the workbench (3) is provided with four groups of mounting grooves (8) distributed in a circumferential array. The four groups of screw rods (7) are rotatably installed in the mounting grooves (8). The rotation directions of the four groups of screw rods (7) are symmetrical in pairs. A slide seat (9) is installed on each of the four groups of screw rods (7). The top of the workbench (3) is provided with a slide groove (10) matching the slide seat (9). The slide seat (9) is slidably connected to the slide groove (10). A clamping block (11) is installed on the top of the slide seat (9).

4. The positioning mechanism of the double-column welding positioner according to claim 3 is characterized in that: A groove (12) is provided at the axis center of the top of the support seat (2), a motor bracket (13) is fixedly installed in the groove (12), a second motor (14) is fixedly installed on the motor bracket (13), a driving gear (15) is fixedly installed on the power output shaft of the second motor (14), and a driven gear (16) matching the driving gear (15) is fixedly installed on the rotating shaft of the four groups of screw rods (7) at one end of the axis center of the workbench (3), and the driving gear (15) and the driven gear (16) are both bevel gears.

5. The positioning mechanism of the double-column welding positioner according to claim 4, characterized in that: The pressing assembly comprises a fixing frame (17), the fixing frame (17) is fixedly mounted on the rear side wall of the workbench base (1), a plurality of guide slide bars (18) are slidably mounted on the top of the fixing frame (17), a support frame (19) is fixedly mounted on the top of the guide slide bars (18), a hydraulic rod (20) is fixedly mounted on the side wall of the fixing frame (17) away from the workbench base (1), a power output end of the hydraulic rod (20) is fixedly connected to the bottom of the fixing frame (17), and a pressure plate assembly is provided at one end of the support frame (19) close to the workbench base (1).

6. The positioning mechanism of the double-column welding positioner according to claim 5, characterized in that: The pressure plate assembly comprises a pressure plate seat (21), wherein the pressure plate seat (21) is fixedly mounted on the bottom of the support frame (19), and a pressure plate (22) is rotatably mounted on the bottom of the pressure plate seat (21), wherein the rotation axis of the pressure plate (22) is the same as the rotation axis of the workbench (3).

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