Roller turnover mechanism

Abstract

The utility model relates to the technical field of overturning tools, in particular to a roller overturning mechanism. The two ends of the walking shaft mechanism are each provided with a turnover mechanism moving along the walking shaft mechanism, each turnover mechanism is provided with a workpiece clamping mechanism, and a workpiece to be machined is clamped between the two workpiece clamping mechanisms. The workpiece clamping mechanism comprises an overturning support, and a transverse clamping mechanism is installed at the upper end of the overturning support. A rotating disc is arranged at the lower end of the overturning support, a plurality of jacking and clamping mechanisms are installed on the rotating disc, the jacking and clamping mechanisms are arranged in a fan shape, and the jacking and clamping mechanisms move in the radial direction of a workpiece. Positioning and overturning of the to-be-machined workpiece are integrated, the compatible range of the to-be-machined workpiece in the diameter direction is large, meanwhile, the workpiece can be compatible in the axial direction, the speed is high, noise is low, and positioning is accurate; the overturning device is stable in overturning, accurate in positioning, good in appearance limiting compatibility and capable of achieving multi-point contact, the requirement for the working condition of the supplied workpiece is lowered, and 180-degree overturning of the large workpiece is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of turning tooling, in particular to a roller turning mechanism. Background Art

[0002] A roller turning mechanism is a device used to turn over or tilt an object or equipment. It usually consists of a support structure, a turning device and a control system. In the industrial field, roller turning mechanisms are often used to turn over or tilt large containers, barrels, frames or other objects for welding, loading, unloading, cleaning or processing.

[0003] The roller flip mechanism is mainly used in large-scale occasions where welding operations are required. It is a relatively young tooling to be processed in my country. Due to the differences in the development level of the manufacturing industry, many companies' welding stations have not yet applied such equipment. Workpieces that need to be adjusted in angle and posture are still operated manually. It is difficult to ensure the welding quality, the cost is high and the efficiency is low, and the safety is difficult to guarantee when operated manually. Summary of the invention

[0004] The technical problem to be solved by the utility model is: in order to solve the problems existing in the prior art in the above-mentioned background technology, a roller turning mechanism is provided which integrates the positioning and turning of the workpiece to be processed, has a large compatible range in the diameter direction of the workpiece to be processed and can also be compatible in the axial direction of the workpiece, has a fast speed, low noise and accurate positioning.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a drum turning mechanism, including a walking axis mechanism, both ends of the walking axis mechanism are equipped with turning mechanisms that move along the walking axis mechanism, each turning mechanism is equipped with a workpiece clamping mechanism, and a workpiece to be processed is clamped between the two workpiece clamping mechanisms; the workpiece clamping mechanism includes a turning bracket, and a transverse clamping mechanism is installed at the upper end of the turning bracket; the lower end of the turning bracket is provided with a turntable, and a plurality of lifting and clamping mechanisms are installed on the turntable, and the lifting and clamping mechanisms are arranged in a fan shape, and the lifting and clamping mechanisms move along the radial direction of the workpiece.

[0006] Furthermore, the flipping mechanism includes a flipping frame and a second servo motor, a slewing support mounting plate is installed on one side of the flipping frame, a four-point contact slewing bearing is installed on the slewing support mounting plate, a first reducer is installed on the output end of the second servo motor, the first reducer is installed on the plate surface of the slewing support mounting plate, and the output end gear of the first reducer is meshed with the external teeth of the four-point contact slewing bearing.

[0007] Further, the transverse clamping mechanism includes a fourth servo motor, the fourth servo motor is equipped with a second reducer, and the second reducer is connected to the second lead screw through a second coupling;

[0008] Screw supports are installed at both ends of the flip bracket, a second screw is installed between the two screw supports, and second nut seats are installed at both ends of the second screw;

[0009] A guide rail assembly is also installed on the flip bracket, and guide positioning blocks are installed at both ends of the guide rail assembly. The guide positioning blocks are connected to the second nut seat, and a guide rail limit block for limiting the displacement stroke of the guide positioning block is installed on the flip bracket.

[0010] Furthermore, the lifting and clamping mechanism includes a first servo motor and a screw transmission assembly, slide rail assemblies are installed on both sides of the screw transmission assembly, the screw transmission assembly is installed on the plate surface of the turntable of the flipping mechanism, the output end of the first servo motor is installed with a first reducer, the output end of the first reducer is connected to the first screw in the screw transmission assembly through a first coupling, a drive block is installed on the first nut seat in the screw transmission assembly, and a tooling clamping block is installed on the end face of the drive block away from the first servo motor.

[0011] Furthermore, the walking axis mechanism includes a walking axis base and a third servo motor, slide rail assemblies are installed on both sides of the walking axis base, a rack is installed in the middle, the third servo motor is installed on the flip frame in the flip mechanism, and a second reducer is installed at the output end of the third servo motor. The output end gear of the second reducer is engaged with the rack to drive the flip mechanism to slide along the guide rail assembly.

[0012] Furthermore, there is a gap between the driving block and the tooling clamping block, the driving block and the tooling clamping block are connected at four corners through floating guide shafts, and a compression spring is also sleeved on the floating guide shaft located in the gap between the driving block and the tooling clamping block.

[0013] Furthermore, a first proximity switch is installed at the end of the floating guide shaft, and the first proximity switch is installed on the plate surface of the driving block.

[0014] Furthermore, a plurality of hard limit brackets are installed on the plate surface of the turntable of the turning mechanism. The hard limit brackets are respectively located at both ends of each lifting and clamping mechanism, and a hydraulic buffer is installed on each hard limit bracket.

[0015] Furthermore, a lubrication gear meshing with the external teeth of the four-point contact turntable bearing is installed on the slewing support mounting plate, a lubrication system is installed on the flip frame, a lubrication distributor is installed on the plate surface of the slewing support mounting plate, and the lubrication system is connected to the lubrication distributor.

[0016] Furthermore, a second proximity switch is installed on the guide positioning block.

[0017] Beneficial effects of the utility model: The utility model integrates the positioning and flipping of the workpiece to be processed, and the compatible range of the diameter direction of the workpiece to be processed is large while the axial direction of the workpiece can also be compatible. The lifting and clamping mechanism and the travel axis are driven by servo motors, and cooperate with high-precision linear slide rails and gear rack transmission, which has fast speed, low noise and accurate positioning;

[0018] The flipping mechanism uses a second servo motor and a four-point contact ball turntable bearing, which features smooth flipping and accurate positioning, compact structure, multi-point contact, and good shape limit compatibility, which reduces the requirements for the working conditions of incoming workpieces, realizes 180° flipping of large workpieces, and has a large radial compatibility range;

[0019] When changing production, the initial data of each mechanism is adjusted through PLC. During the execution of the action, the proximity switch, adaptive point and data of each dynamic adjustment mechanism can be used to achieve one-key switching of production change, thereby reducing the requirements for operators, greatly reducing time costs, greatly improving production capacity and increasing revenue performance;

[0020] At the same time, hard limits are set to ensure safety during human-machine interaction, abandoning the concept of human-machine separation and safety zone in the original automatic production line. During automatic operation, personnel can participate in it and dynamically observe the working conditions in real time. When an emergency occurs, personnel will shut down the equipment as soon as possible to avoid destructive damage to the mechanism and workpiece, extend the service life of the product, and maximize benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 This utility model Figure 1 A schematic diagram of the structure in another direction;

[0024] Figure 3 It is a structural schematic diagram of the jacking and clamping mechanism of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the transverse clamping mechanism of the utility model;

[0026] Figure 5 It is a usage state diagram of the utility model;

[0027] In the figure: 1, walking axis base; 10, first coupling; 11, first servo motor; 12, first nut seat; 13, first screw; 14, first reducer; 15, drive block; 17, tool clamping block; 21, guide rail mounting plate; 23, compression spring; 24, floating guide shaft; 28, first proximity switch; 32, rack; 34, flip frame; 36, slewing support mounting plate; 39, first reducer; 41, second servo motor; 45, second reducer; 46, third servo Motor; 48, tension block; 52, flip bracket; 53, turntable; 84, four-point contact turntable bearing; 85, second reducer; 86, fourth servo motor; 88, second proximity switch; 95, lead screw support; 96, second nut seat; 97, second lead screw; 102, guide positioning block; 137, second coupling; 138, guide rail limit block; 143, hydraulic buffer; 148, hard limit bracket; 158, lubrication gear; 168, lubrication system; 254, lubrication distributor. DETAILED DESCRIPTION

[0028] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0029] like Figures 1 to 5 A roller turning mechanism is shown, which is used to turn the roller. The roller structure is as shown in FIG. Figure 5 As shown, it includes a walking axis mechanism, both ends of which are equipped with a flipping mechanism that moves along the walking axis mechanism, and each flipping mechanism is equipped with a workpiece clamping mechanism to drive the workpiece clamping mechanism to flip, and a workpiece to be processed is clamped between the two workpiece clamping mechanisms;

[0030] The workpiece clamping mechanism includes a flip bracket 52, and a lateral clamping mechanism is installed on the upper end of the flip bracket 52; the lower end of the flip bracket 52 has a turntable 53, and a plurality of lifting and clamping mechanisms are installed on the turntable 53. The lifting and clamping mechanisms are arranged in a fan shape, and three sets of lifting and clamping mechanisms are arranged at 30° on the turntable 53. The lifting and clamping mechanisms move radially along the workpiece.

[0031] The walking axis mechanism includes a walking axis base 1 and a third servo motor 46. The two sides of the walking axis base 1 are equipped with slide rail assemblies, and a rack 32 is installed in the middle. The third servo motor 46 is installed on the turning frame 34 in the turning mechanism. The output end of the third servo motor 46 is equipped with a second reducer 45. The output end gear of the second reducer 45 is meshed with the rack 32 to drive the turning mechanism to slide along the guide rail assembly. The turning mechanism is used to realize the rotation of the workpiece to be processed (adjust the direction of the workpiece). The turning mechanism includes a turning frame 34 and a second servo motor 41. A slewing support mounting plate 36 is installed on one side of the turning frame 34. A four-point contact turntable bearing 84 is installed on the slewing support mounting plate 36. The output end of the second servo motor 41 is equipped with a first reducer 39. The first reducer 39 is installed on the plate surface of the slewing support mounting plate 36, and the output end gear of the first reducer 39 is meshed with the outer teeth of the four-point contact turntable bearing 84. The second servo motor 41 is started to drive the workpiece clamping mechanism to rotate, so as to realize the 180° rotation of the workpiece to be processed.

[0032] At the same time, the tension block 48 is fixed on the slewing support mounting plate 36 to adjust the gear meshing clearance. The slewing support mounting plate 36 has a round hole at one end and a long hole at the other end to ensure that the position of the rotating support 34 is fixed accurately.

[0033] A lubrication gear 158 meshing with the external teeth of the four-point contact turntable bearing 84 is also installed on the slewing support mounting plate 36 , a lubrication system 168 is installed on the flip frame 34 , a lubrication distributor 254 is installed on the plate surface of the slewing support mounting plate 36 , and the lubrication system 168 is connected to the lubrication distributor 254 .

[0034] like Figure 4 As shown, the transverse clamping mechanism includes a fourth servo motor 86, and the fourth servo motor 86 is equipped with a second reducer 85. The second reducer 85 is connected to the second lead screw 97 through a second coupling 137. The second lead screw 97 is left-right rotating. The use of the left-right rotating second lead screw 97 makes the left and right side guide positioning blocks 102 move inward or outward at the same time;

[0035] Screw supports 95 are installed at both ends of the flip bracket 52, a second screw 97 is installed between the two screw supports 95, and second screw nut seats 96 are installed at both ends of the second screw 97;

[0036] A guide rail assembly is also installed on the flip bracket 52, and guide positioning blocks 102 are installed at both ends of the guide rail assembly. The guide positioning blocks 102 are connected to the second nut seat 96, and the second screw 97 rotates to drive the guide positioning blocks 102 at both ends to move horizontally. A guide rail limit block 138 for limiting the displacement stroke of the guide positioning block 102 is installed on the flip bracket 52.

[0037] The guide positioning block 102 has a V-shaped groove at the end thereof to limit the workpiece. The guide positioning block 102 is provided with a second proximity switch 88 to detect whether the workpiece to be processed is in place.

[0038] like Figure 3 As shown, the lifting clamping mechanism includes a first servo motor 11 and a screw transmission assembly, that is, the lifting clamping mechanism is driven by the first servo motor 11 and the first screw 13, so that the clamping device moves radially along the workpiece. Slide rail assemblies are installed on both sides of the screw transmission assembly, and the screw transmission assembly is installed on the plate surface of the turntable 53 of the flip mechanism. The output end of the first servo motor 11 is installed with a first reducer 14, and the output end of the first reducer 14 is connected to the first screw 13 in the screw transmission assembly through a first coupling 10. A driving block 15 is installed on the first nut seat 12 in the screw transmission assembly, and a tooling clamping block 17 is installed on the end face of the driving block 15 away from the first servo motor 11. The first nut seat 12 is connected to the lifting driving block (not shown in the figure), and the rectangular limiting part at one end of the lifting driving block is inserted into the corresponding groove of the driving block 15 to achieve the limiting of the clamping device along the axial direction of the screw and the floating in other directions.

[0039] The bottom of the driving block 15 is fixed to the slider in the sliding assembly, so that the clamping device moves along the guide rail in the sliding assembly, and the guide rail in the sliding assembly is connected to the guide rail mounting plate, and the guide rail mounting plate is mounted on the turntable 53, thereby fixing the entire lifting clamping mechanism on the turntable 53. There is a gap between the driving block 15 and the tool clamping block 17, and the driving block 15 and the tool clamping block 17 are connected at four corners through floating guide shafts 24, and the floating guide shafts 24 located in the gap between the driving block 15 and the tool clamping block 17 are also sleeved with compression springs 23 to achieve a floating function when clamping the workpiece.

[0040] A first proximity switch 28 is installed at the end of the floating guide shaft 24. The first proximity switch 28 is installed on the plate surface of the driving block 15. When the first proximity switches 28 of the three sets of jacking and clamping mechanisms all receive signals, the equipment is flipped.

[0041] A plurality of hard limit brackets 148 are installed on the plate surface of the turntable 53 of the flipping mechanism. The hard limit brackets 148 (6 in total) are respectively located at both ends of each lifting and clamping mechanism. A hydraulic buffer 143 and a limit bolt are installed on each hard limit bracket 148 .

[0042] Workflow:

[0043] Step 1: After the equipment is started, the left and right units of the workpiece clamping mechanism return to the origin position. After the workpiece to be processed enters the clamping and loading position, the servo motor 46 is started to drive the transverse clamping mechanism to move along the travel axis direction to achieve axial positioning of the workpiece to be processed. At the same time, the movement in this direction can also achieve compatibility in the length direction of the workpiece to be processed; the workpiece to be processed (i.e., the roller channel) is fed to the center position of the flip mechanism (the workpiece information is transmitted to the flip mechanism by the roller channel);

[0044] Step 2: The flipping mechanisms on both sides move towards each other simultaneously to the workpiece;

[0045] Step 3: The three sets of lifting and clamping mechanisms move simultaneously to lift the workpiece to be processed until it is out of the roller channel (reaching a safe position);

[0046] Step 4: The lateral clamping mechanism detects that the workpiece is in place and clamped through the cooperation of the second proximity switch 88, and starts the flipping action;

[0047] Step 5: After the flip (180°) is completed, the roller channel returns to the initial position and waits for the next workpiece to cycle in sequence.

[0048] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A drum turning mechanism, characterized in that: It includes a walking axis mechanism, both ends of which are equipped with a flipping mechanism that moves along the walking axis mechanism, each flipping mechanism is equipped with a workpiece clamping mechanism, and a workpiece to be processed is clamped between the two workpiece clamping mechanisms; The workpiece clamping mechanism comprises a flip bracket (52), the upper end of which is provided with a transverse clamping mechanism; the lower end of the flip bracket (52) is provided with a turntable (53), a plurality of lifting clamping mechanisms are installed on the turntable (53), the lifting clamping mechanisms are arranged in a fan shape, and the lifting clamping mechanisms move in the radial direction of the workpiece.

2. A drum turning mechanism according to claim 1, characterized in that: The flipping mechanism comprises a flipping frame (34) and a second servo motor (41), a slewing support mounting plate (36) is mounted on one side of the flipping frame (34), a four-point contact turntable bearing (84) is mounted on the slewing support mounting plate (36), a first reducer (39) is mounted on the output end of the second servo motor (41), the first reducer (39) is mounted on the plate surface of the slewing support mounting plate (36), and the output end gear of the first reducer (39) is meshed with the external teeth of the four-point contact turntable bearing (84).

3. A drum turning mechanism according to claim 1, characterized in that: The transverse clamping mechanism comprises a fourth servo motor (86), the fourth servo motor (86) is equipped with a second reducer (85), and the second reducer (85) is connected to the second lead screw (97) through a second coupling (137); Both ends of the flip bracket (52) are equipped with screw supports (95), a second screw (97) is installed between the two screw supports (95), and both ends of the second screw (97) are equipped with second nut seats (96); A guide rail assembly is also installed on the flip bracket (52), and guide positioning blocks (102) are installed at both ends of the guide rail assembly. The guide positioning blocks (102) are connected to the second nut seat (96), and a guide rail limit block (138) for limiting the displacement stroke of the guide positioning block (102) is installed on the flip bracket (52).

4. A drum turning mechanism according to claim 1, characterized in that: The lifting and clamping mechanism comprises a first servo motor (11) and a screw transmission assembly, slide rail assemblies are installed on both sides of the screw transmission assembly, the screw transmission assembly is installed on the plate surface of the turntable (53) of the flip mechanism, the output end of the first servo motor (11) is installed with a first reducer (14), the output end of the first reducer (14) is connected to the first screw (13) in the screw transmission assembly through a first coupling (10), a driving block (15) is installed on the first nut seat (12) in the screw transmission assembly, and a tooling clamping block (17) is installed on the end face of the driving block (15) away from the first servo motor (11).

5. A drum turning mechanism according to claim 1, characterized in that: The walking axis mechanism comprises a walking axis base (1) and a third servo motor (46). Slide rail assemblies are installed on both sides of the walking axis base (1), and a rack (32) is installed in the middle. The third servo motor (46) is installed on a turning frame (34) in the turning mechanism. A second reducer (45) is installed at the output end of the third servo motor (46). The output end gear of the second reducer (45) is meshed with the rack (32) to drive the turning mechanism to slide along the guide rail assembly.

6. A drum turning mechanism according to claim 4, characterized in that: There is a gap between the driving block (15) and the tool clamping block (17), and the four corners of the driving block (15) and the tool clamping block (17) are connected through floating guide shafts (24), and a compression spring (23) is also sleeved on the floating guide shaft (24) located in the gap between the driving block (15) and the tool clamping block (17).

7. A drum turning mechanism according to claim 6, characterized in that: A first proximity switch (28) is installed at the end of the floating guide shaft (24), and the first proximity switch (28) is installed on the plate surface of the driving block (15).

8. A drum turning mechanism according to claim 4, characterized in that: A plurality of hard limit brackets (148) are installed on the plate surface of the turntable (53) of the flipping mechanism. The hard limit brackets (148) are respectively located at the two ends of each lifting and clamping mechanism. A hydraulic buffer (143) is installed on each hard limit bracket (148).

9. A drum turning mechanism according to claim 2, characterized in that: The slewing support mounting plate (36) is also provided with a lubrication gear (158) meshing with the external teeth of the four-point contact turntable bearing (84); the turning frame (34) is provided with a lubrication system (168); the plate surface of the slewing support mounting plate (36) is provided with a lubrication distributor (254); and the lubrication system (168) is connected to the lubrication distributor (254).

10. A drum turning mechanism according to claim 3, characterized in that: A second proximity switch (88) is installed on the guide positioning block (102).

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