A flipping feeding device and its feeding method

Abstract

The present invention provides a flipping loading device and a loading method thereof, including a base, a hydraulic cylinder, a support frame, a flipping device, a fixture and a conveying device. The hydraulic cylinder is arranged between the support frame and the base. The support frame includes a bottom plate, a left side plate and a right side plate. The flipping device includes a flipping shaft, a lifting rack, a first gear, a connecting block, a buffer sleeve, a spring, a lifting rod and a limiting plate. The flipping shaft is horizontally arranged and rotatably connected to the support frame. The fixture is installed on the flipping shaft. The buffer sleeve is vertically fixed on the outside of the right side plate. The spring is arranged inside the buffer sleeve. The lower end of the lifting rod is inserted into the sleeve and presses against the top of the spring. The lifting rod is slidably connected to the inner side wall of the buffer sleeve. A limiting plate is arranged above the lifting rod. One end of the slider is fixedly connected to the lifting rod and the other end is fixedly connected to the lifting rack. The first gear is fixedly arranged on the flipping shaft. The conveying device is used for loading the fixture. This device can solve the technical problems of complex mechanism and low flipping loading working efficiency of the existing workpiece flipping loading device.

Description

Technical Field

[0001] The present invention relates to the technical field of axle housing processing, and particularly relates to a flipping loading device and a loading method thereof. Background Art

[0002] The rear axle of an automobile is an important load-bearing component of the vehicle. The firmness of its structure is crucial for the reliability and safety of the vehicle's driving. Therefore, the welding of the rear axle housing body and the axle heads at both ends is of great importance. The welding of the vehicle rear axle housing body and the axle heads generally adopts the welding method using a double-head axle friction welding machine. During the continuous welding process, the axle head needs to be flipped 90 degrees and then docked with the middle section of the opposite axle housing. Currently, the docking method adopted is realized by a six-axis linkage robot. However, since the six-axis linkage robot is not specifically used for loading in the welding process of the middle section of the axle housing and the axle head, the welding procedure is complicated and the equipment is expensive. To reduce the cost of the welding process of the vehicle rear axle housing body and the axle head, it is necessary to design a device specifically for flipping and loading the axle head. Summary of the Invention

[0003] The first technical problem to be solved by the present invention is: to provide a flipping loading device to solve the technical problems of the complex mechanism and low flipping loading work efficiency of the existing workpiece flipping loading device.

[0004] The second technical problem to be solved by the present invention is: to provide a loading method for the flipping loading device.

[0005] To solve the above first technical problem, the technical solution of the present invention is: a flipping loading device, including a base, a hydraulic cylinder, a support frame, a flipping device, a fixture, and a conveying device. The hydraulic cylinder is arranged between the support frame and the base. The support frame includes a bottom plate, a left side plate, and a right side plate. The left side plate is fixedly arranged on the left side of the bottom plate, and the right side plate is fixedly arranged on the right side of the bottom plate. The flipping device includes a flipping shaft, a lifting rack, a first gear, a connecting block, a buffer sleeve, a spring, a lifting rod, and a limiting plate. The flipping shaft is horizontally arranged and rotatably connected to the support frame. The fixture is installed on the flipping shaft. The buffer sleeve is vertically fixed on the outside of the right side plate. The spring is arranged inside the buffer sleeve. The lower end of the lifting rod is inserted into the buffer sleeve and presses against the top of the spring. The lifting rod is slidably connected to the inner side wall of the buffer sleeve. The limiting plate is arranged above the lifting rod. The limiting plate is installed on the base. The lifting rod and the limiting plate are arranged corresponding to each other up and down. A vertical sliding hole is provided on the right side plate. The connecting block slides in the sliding hole. One end of the connecting block is fixedly connected to the lifting rod and the other end is fixedly connected to the lifting rack. The first gear is fixedly arranged on the flipping shaft. The lifting rack and the first gear are meshed with each other.

[0006] The conveying device includes a conveying bracket, a conveying motor, a driving pulley, a driven pulley, and a conveyor belt. The driving pulley and the driven pulley are respectively rotatably installed on the conveying bracket. The conveyor belt connecting the driving pulley and the driven pulley is disposed below the fixture. The output shaft of the conveying motor is drivingly connected to the driving pulley.

[0007] Preferably, it further includes a guiding device. The guiding device includes a guiding column and a guiding sleeve. The bottom of the guiding column is fixedly connected to the base, the guiding sleeve is fixedly connected to the supporting frame, and the guiding column is slidably connected to the guiding sleeve.

[0008] Preferably, a column is fixedly provided at the rear part on the right side of the base. A horizontal supporting arm is fixedly provided at the top of the column. The limiting plate is vertically slidably disposed on the supporting arm, and a setscrew is provided between the limiting plate and the supporting arm.

[0009] Preferably, a guiding sleeve is fixedly provided on the right side plate, and the lifting rod is slidably connected to the guiding sleeve.

[0010] Preferably, the fixture includes a housing, a left clamping jaw, a right clamping jaw, a left sliding seat, a right sliding seat, a threaded rod, a driving bevel gear, a driven bevel gear, and a driving motor. A long hole is provided at the top of the housing. The left clamping jaw is fixedly connected to the left sliding seat, and the right clamping jaw is fixedly connected to the right sliding seat. The left sliding seat and the right sliding seat are respectively slidably disposed in the long hole. The threaded rod is horizontally disposed inside the housing. The middle of the threaded rod is rotatably connected to the housing. A left-handed thread is provided at one end on the left side of the threaded rod, and a right-handed thread is provided at one end on the right side of the threaded rod. The left sliding seat is threadedly connected to the left-handed thread, and the right sliding seat is threadedly connected to the right-handed thread. A driven bevel gear is provided at the left end of the threaded rod. A driving bevel gear meshing with the driven bevel gear is rotatably installed on the housing. The driving motor is installed outside the housing, and the output shaft of the driving motor is drivingly connected to the driving bevel gear.

[0011] Preferably, a horizontal chute is provided on the inner side wall of the housing. Sliders are provided on both the left sliding seat and the right sliding seat. The left sliding seat and the right sliding seat are respectively slidably disposed in the chute through the sliders.

[0012] Preferably, the threaded rod includes a left rod body and a right rod body. A square slot is provided at the right end of the left rod body, and a square plug is provided at the left end of the right rod body. The plug is inserted into the slot.

[0013] To solve the above second technical problem, the technical solution of the present invention is: a feeding method for a flipping feeding device, including the following steps:

[0014] 1) Start the driving motor to rotate forward, so that the left and right jaws of the fixture open relatively, convey the workpiece between the left and right jaws of the fixture, and control the driving motor to rotate reversely to make the left and right jaws close to clamp the workpiece;

[0015] 2) Control the hydraulic cylinder to rise. During the rising process, the lifting rod is limited by the limiting plate and descends relative to the support frame. The rack descends with the lifting rod to drive the first gear to rotate, and the turning shaft drives the fixture to turn up 90 degrees;

[0016] 3) Control the driving motor to rotate forward, so that the fixture releases the workpiece and then the workpiece is taken away. Control the hydraulic cylinder to descend. Under the action of the spring, the lifting rod rises relative to the support frame. The rack rises with the lifting rod to drive the first gear to rotate, and the turning shaft drives the fixture to turn down 90 degrees to reset and enter the next loading cycle.

[0017] The technical effects obtained by adopting the above technical solutions are as follows:

[0018] The flipping loading device of the present application can flip the erected workpiece by 90 degrees, so that the welding surface to be welded of the workpiece faces the welding surface to be welded of other components, which is convenient for the welding equipment to clamp the workpiece and weld it with other components. By using this flipping device, the workpiece can be automatically flipped during welding, which can greatly improve the welding efficiency, save labor, and the flipping device is assembled with conventional mechanical components, with low cost, which is conducive to popularization and application in enterprises. The flipping device and the lifting device of the flipping loading device of the present application adopt a linkage design, and the flipping movement of the turning shaft is synchronized with the lifting movement of the hydraulic cylinder, which not only eliminates the power mechanism of the flipping device, simplifies the structure of the whole device, reduces the cost, but also makes the flipping movement of the flipping device more accurate and reliable.

[0019] Since it further includes a guiding device, the guiding device includes a guiding column and a guiding sleeve. The bottom of the guiding column is fixedly connected to the base, the guiding sleeve is fixedly connected to the support frame, and the guiding column is slidably connected to the guiding sleeve. The guiding device plays a guiding role in the lifting of the support frame.

[0020] Since a column is fixedly provided at the rear part on the right side of the base, a horizontal support arm is fixedly provided at the top of the column, and the limiting plate is vertically slidably arranged on the support arm, and it is convenient to adjust the height of the limiting plate by the set screw.

[0021] Since the fixture for gripping workpieces in this application drives the bevel gear through a driving motor to drive two jaws to move synchronously to grip and release the workpieces, it can not only grip the workpieces more efficiently, but also clamp the workpieces more firmly. Since the two sides of the gripped workpiece are evenly stressed, the workpiece can be effectively prevented from being damaged. The fixture for gripping workpieces in this application has the characteristics of simple structure, low manufacturing cost and reliable operation safety.

[0022] Since the threaded rod includes a left rod body and a right rod body, a square slot is provided at the right end of the left rod body, and a square plug is provided at the left end of the right rod body. The plug is inserted into the slot, and the left rod body and the right rod body are connected by plugging, which is convenient for installation and disassembly. Brief Description of the Drawings

[0023] The present invention will be further described below in conjunction with the drawings and embodiments.

[0024] Figure 1 is the structural schematic diagram of this application;

[0025] Figure 2 is the side structural schematic diagram of this application;

[0026] Figure 3 is the structural schematic diagram of the fixture of this application turned upwards;

[0027] Figure 4 is the structural schematic diagram of the two jaws of the fixture in the open state;

[0028] Figure 5 is the structural schematic diagram of the two jaws of the fixture in the gripping state;

[0029] In the figure, 1, base; 11, conveying bracket; 12, conveying motor; 13, driving pulley; 14, driven pulley; 15, conveyor belt; 2, hydraulic cylinder; 3, support frame; 31, bottom plate; 32, left side plate; 33, right side plate; 51, turning shaft; 52, lifting rack; 53, first gear; 54, connecting block; 55, buffer sleeve; 56, spring; 57, lifting rod; 58, limiting plate; 6, fixture; 60, housing; 611, chute; 61, left jaw; 62, right jaw; 63, left sliding seat; 64, right sliding seat; 65, slider; 661, left rod body; 662, right rod body; 664, plug; 671, driving bevel gear; 672, driven bevel gear; 681, first bearing seat; 682, second bearing seat; 683, third bearing seat; 684, first thrust bearing; 685, second thrust bearing; 69, groove; 71, guide post; 72, guide sleeve; 81, column; 82, support arm; 10, setscrew. Detailed Embodiments

[0030] Embodiment 1

[0031] As shown Figures 1 to 3 in the figure, a turnover feeding device includes a base 1, a hydraulic cylinder 2, a support frame 3, a turnover device 5, a fixture 6 and a conveying device. The hydraulic cylinder 2 is arranged between the support frame 3 and the base 1. The support frame 3 includes a bottom plate 31, a left side plate 32 and a right side plate 33. The left side plate 32 is fixedly arranged on the left side of the bottom plate 31 and the right side plate 33 is fixedly arranged on the right side of the bottom plate 31. The turnover device 5 includes a turnover shaft 51, a lifting rack 52, a first gear 53, a connecting block 54, a buffer sleeve 55, a spring 56, a lifting rod 57 and a limiting plate 58. The turnover shaft 51 is horizontally arranged and rotatably connected with the support frame 3. The fixture 6 is installed on the turnover shaft 51.

[0032] As shown Figures 4 to 5 in the figure, the fixture 6 includes a housing 60, a left clamping jaw 61, a right clamping jaw 62, a left sliding seat 63, a right sliding seat 64, a threaded rod, a driving bevel gear 671, a driven bevel gear 672 and a driving motor. A long hole is provided at the top of the housing 60. The left clamping jaw 61 is fixedly connected with the left sliding seat 63, and the right clamping jaw 62 is fixedly connected with the right sliding seat 64. The left sliding seat 63 and the right sliding seat 64 are respectively slidably arranged in the long hole. The threaded rod is horizontally arranged inside the housing 60. The middle of the threaded rod is rotatably connected with the housing 60. The left end of the threaded rod is provided with a left-handed thread, and the right end of the threaded rod is provided with a right-handed thread. The left sliding seat 63 is threadedly connected with the left-handed thread, and the right sliding seat 64 is threadedly connected with the right-handed thread. The left end of the threaded rod is provided with the driven bevel gear 672. A driving bevel gear 671 meshing with the driven bevel gear 672 is rotatably installed on the housing 60. The driving motor is installed outside the housing 60, and the output shaft of the driving motor is in transmission connection with the driving bevel gear 671.

[0033] A horizontal chute 611 is provided on the inner side wall of the housing 60. Sliders 65 are provided on both the left sliding seat 63 and the right sliding seat 64. The left sliding seat 63 and the right sliding seat 64 are respectively slidably arranged in the chute 611 through the sliders 65. The threaded rod includes a left rod body 661 and a right rod body 662. The right end of the left rod body 661 is provided with a square slot, and the left end of the right rod body 662 is provided with a square plug 664. The plug 664 is inserted into the slot. The left rod body 661 and the right rod body 662 are connected by plugging, which is convenient for installation and disassembly. A first bearing seat 681 and a second bearing seat 682 are fixedly installed inside the housing 60. A first thrust bearing 684 is provided between the first bearing seat 681 and the right end of the right rod body 662. An annular boss is provided on the right side of the left rod body 661. A second thrust bearing 685 is provided between the annular boss and the second bearing seat 682. A radial bearing is sleeved on the left end of the left rod body 661 inside the driven bevel gear 672. The radial bearing is installed on a third bearing seat 683, and the third bearing seat 683 is fixedly connected with the inner side wall of the housing 60.

[0034] On the inner sides of the left gripper 61 and the right gripper 62, there are arc-shaped grooves 69. Elastic rubber pads are provided in the arc-shaped grooves 69. The shape of the arc-shaped grooves 69 matches the outer shape of the cylindrical workpiece for grasping it, and the elastic rubber pads can prevent the surface of the workpiece from being damaged by clamping. Anti-slip stripes are provided on the outer sides of the elastic rubber pads, enabling the left gripper 61 and the right gripper 62 to clamp the workpiece more firmly.

[0035] The buffer sleeve is vertically fixed on the outside of the right side plate 33. The spring 56 is arranged inside the buffer sleeve 55. The lower end of the lifting rod 57 is inserted into the buffer sleeve 55 and presses against the top of the spring 56. The lifting rod 57 is slidably connected to the inner side wall of the buffer sleeve 55. A limiting plate 58 is provided above the lifting rod 57. A guide sleeve is fixedly provided on the right side plate 33, and the lifting rod 57 is slidably connected to the guide sleeve. A vertical column 81 is fixedly provided at the rear right part of the base 1. A horizontal support arm 82 is fixedly provided at the top of the vertical column 81. The limiting plate 58 is vertically slidable on the support arm 82, and it is convenient to adjust the height of the limiting plate 58 through the setscrew 10.

[0036] The limiting plate 58 is installed on the base 1. The lifting rod 57 is arranged corresponding to the limiting plate 58 up and down. The distance between the bottom of the lifting rod 57 and the limiting plate 58 is less than the distance of the up and down sliding of the lifting rod 57. A vertical sliding hole is provided on the right side plate 33. A connecting block 54 is arranged in the sliding hole. One end of the connecting block 54 is fixedly connected to the lifting rod 57 and the other end is fixedly connected to the lifting rack 52. The first gear 53 is fixedly provided on the turning shaft 51. The lifting rack 52 and the first gear 53 are meshed with each other.

[0037] The conveying device includes a conveying bracket 11, a conveying motor 12, a driving pulley 13, a driven pulley 14, and a conveyor belt 15. The driving pulley 13 and the driven pulley 14 are respectively rotatably installed on the conveying bracket 11. A conveyor belt 15 connecting the driving pulley 13 and the driven pulley 14 is provided below the fixture 6. The output shaft of the conveying motor 11 is drivingly connected to the driving pulley 13.

[0038] The flipping and loading device of the present application further includes a guiding device. The guiding device includes a guiding column 71 and a guiding sleeve 72. The bottom of the guiding column 71 is fixedly connected to the base 1. The guiding sleeve 72 is fixedly connected to the support frame 3. The guiding column 71 is slidably connected to the guiding sleeve 72. The guiding device plays a guiding role in the lifting of the support frame 3.

[0039] The loading method of the flipping and loading device of the present application includes the following steps:

[0040] 1) Start the driving motor to rotate forward, loosen the fixture 6, convey the workpiece between the left gripper 62 and the right gripper 63 of the fixture 6, and control the driving motor to rotate backward to make the left gripper 62 and the right gripper 63 contract to clamp the workpiece;

[0041] 2) Control the hydraulic cylinder 2 to rise, the lifting rod 57 is limited by the limit plate 58 during the rising process and descends relative to the support frame 3, the lifting rack 52 drives the first gear 53 to rotate as the lifting rod 57 descends, and the turning shaft 51 drives the clamp 6 to turn upward 90 degrees;

[0042] 3) Control the driving motor to rotate forward, control the clamp 6 to release and remove the workpiece, control the hydraulic cylinder 2 to descend, and the lifting rod 57 rises relative to the support frame 3 under the action of the spring 56. The lifting rack 52 rises with the lifting rod 57 to drive the first gear 53 to rotate, and the flip shaft 51 drives the clamp 6 to flip downward 90 degrees to reset and enter the next workpiece grabbing cycle.

[0043] The flipping feeding device of the present application can flip the upright workpiece 90 degrees, so that the surface to be welded of the workpiece is opposite to the surface to be welded of other parts, so that it is convenient for the welding equipment to clamp the workpiece and weld it with other parts. The flipping device 5 can be used to automatically flip the workpiece when welding, which can greatly improve the welding efficiency and save labor. In addition, the flipping device 5 is assembled with conventional mechanical components, which is low in cost and is conducive to promotion and application in enterprises. The flipping device 5 of the flipping feeding device of the present application adopts a linkage design with the lifting device. The flipping movement of the flipping shaft 51 is synchronized with the lifting movement of the hydraulic cylinder 2, which not only saves the power mechanism of the flipping device 5, simplifies the structure of the entire device, reduces the cost, and makes the flipping movement of the flipping device 5 more accurate and reliable.

Claims

1. A flipping feeding device, characterized in that: it includes a base, a hydraulic cylinder, a support frame, a flipping device, a fixture and a conveying device, the hydraulic cylinder is arranged between the support frame and the base, the support frame includes a bottom plate, a left side plate and a right side plate, the flipping device includes a flipping shaft, a lifting rack, a first gear, a connecting block, a buffer sleeve, a spring, a lifting rod and a limiting plate, the flipping shaft is horizontally arranged and rotatably connected with the support frame, the fixture is installed on the flipping shaft, the buffer sleeve is vertically fixed on the outside of the right side plate, the spring is arranged inside the buffer sleeve, the lower end of the lifting rod is inserted into the buffer sleeve and presses against the top of the spring, the lifting rod is slidably connected with the inner side wall of the buffer sleeve, the limiting plate is arranged above the lifting rod, the limiting plate is installed on the base, the lifting rod and the limiting plate are arranged corresponding to each other up and down, a vertical sliding hole is arranged on the right side plate, the connecting block is slidably arranged in the sliding hole, one end of the outside of the connecting block is fixedly connected with the lifting rod and the inner end is fixedly connected with the lifting rack, the first gear is fixedly arranged on the flipping shaft, and the lifting rack and the first gear are meshed with each other; the conveying device includes a conveying support, a conveying motor, a driving pulley, a driven pulley and a conveyor belt, the driving pulley and the driven pulley are respectively rotatably installed on the conveying support, the conveyor belt connecting the driving pulley and the driven pulley is arranged below the fixture, and the output shaft of the conveying motor is drivingly connected with the driving pulley, a column is fixedly arranged at the rear part on the right side of the base, a horizontal support arm is fixedly arranged at the top of the column, the limiting plate is vertically slidably arranged on the support arm, and a setscrew is arranged between the limiting plate and the support arm, it further includes a guiding device, the guiding device includes a guiding column and a guiding sleeve, the bottom of the guiding column is fixedly connected with the base, the guiding sleeve is fixedly connected with the support frame, the guiding column is slidably connected with the guiding sleeve, a guiding sleeve is fixedly arranged on the right side plate, and the lifting rod is slidably connected with the guiding sleeve.

2. The flipping feeding device according to claim 1, characterized in that: the fixture includes a housing, a left clamping jaw, a right clamping jaw, a left sliding seat, a right sliding seat, a threaded rod, a driving bevel gear, a driven bevel gear and a driving motor, a long hole is arranged at the top of the housing, the left clamping jaw is fixedly connected with the left sliding seat, the right clamping jaw is fixedly connected with the right sliding seat, the left sliding seat and the right sliding seat are respectively slidably arranged in the long hole, the threaded rod is horizontally arranged inside the housing, the middle of the threaded rod is rotatably connected with the housing, a left-handed thread is arranged at one end on the left side of the threaded rod, a right-handed thread is arranged at one end on the right side of the threaded rod, the left sliding seat is threadedly connected with the left-handed thread, and the right sliding seat is threadedly connected with the right-handed thread, a driven bevel gear is arranged at the left end of the threaded rod, a driving bevel gear meshing with the driven bevel gear is rotatably installed on the housing, and the driving motor is installed outside the housing, and the output shaft of the driving motor is drivingly connected with the driving bevel gear.

3. The turnover feeding device according to claim 2, characterized in that: a transverse chute is provided on the inner side wall of the housing, sliders are provided on both the left sliding seat and the right sliding seat, and the left sliding seat and the right sliding seat are respectively slidably arranged in the chute through the sliders.

4. The turnover feeding device according to claim 3, characterized in that: the threaded rod includes a left rod body and a right rod body, a square slot is provided at the right end of the left rod body, a square plug is provided at the left end of the right rod body, and the plug is inserted into the slot.

5. The feeding method of the turnover feeding device according to claim 1, characterized in that: it includes the following steps: 1) Start the driving motor to rotate forward, so that the left jaw and the right jaw of the fixture open relatively, convey the workpiece between the left jaw and the right jaw of the fixture, and control the driving motor to rotate reversely to make the left jaw and the right jaw close together to clamp the workpiece; 2) Control the hydraulic cylinder to rise. During the rising process of the lifting rod, the lifting rod is limited by the limiting plate and descends relative to the support frame. The rack descends with the lifting rod to drive the first gear to rotate, and the turning shaft drives the fixture to turn up 90 degrees; 3) Control the driving motor to rotate forward, so that the fixture releases the workpiece and then the workpiece is taken away. Control the hydraulic cylinder to descend. Under the action of the spring, the lifting rod rises relative to the support frame. The rack rises with the lifting rod to drive the first gear to rotate, and the turning shaft drives the fixture to turn down and reset to enter the next feeding cycle.

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