CN112453814A

CN112453814A - Rotary driving mechanism

Info

Publication number: CN112453814A
Application number: CN202011414842.3A
Authority: CN
Inventors: 文建敏; 蒋建全
Original assignee: KUKA Industrial Automation Kunshan Co Ltd
Current assignee: KUKA Industrial Automation Kunshan Co Ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-03-09

Abstract

The present invention provides a rotary drive mechanism, comprising: a first frame body; the first actuator is rotatably arranged on the first frame body and is configured to clamp one side of the workpiece and drive the workpiece to rotate; a second frame body; and the second actuating mechanism is arranged on the second frame body and is configured to clamp the other side of the workpiece, and the rotating shaft of the workpiece extends from the first actuating mechanism to the second actuating mechanism. The rotary driving mechanism can well assist workers to operate, reduces the labor intensity of the workers, improves the production efficiency and eliminates the defects of welding seams.

Description

Rotary driving mechanism

Technical Field

The invention relates to the technical field of axle welding, in particular to a rotary driving mechanism.

Background

With the rapid development of the logistics industry in China, customers have higher requirements on the smoothness and the reliability of vehicles, and more automobiles select air suspension systems. At present, the domestic axle production line has low automation degree and low welding quality.

Among them, robot welding is a trend based on the need to improve the degree of automation of the axle production line. Due to the limitation of the welding accessibility range of the robot welding, all welding seams are difficult to weld by the robot. For example, after the axle tube and the tail plate are welded by the robot, the transport robot grabs the welded axle and tail plate assembly off-line, at the moment, partial welding seams need to be repaired and welded manually, the quality of the welding seams welded by the robot also needs to be checked by workers to determine whether the welding seams are qualified, and then repair measures are taken for unqualified welding seams. So, just caused the staff and needed the condition that the secondary overhauld and repair welded, and at the staff secondary overhaul with repair welded in-process, at present domestic supporting auxiliary fixtures that do not have, cause staff's working strength big, and work efficiency on the low side.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art.

To this end, the invention relates to a rotary drive.

The present invention provides a rotary drive mechanism, comprising: a first frame body; the first actuator is rotatably arranged on the first frame body and is configured to clamp one side of the workpiece and drive the workpiece to rotate; a second frame body; and the second actuating mechanism is arranged on the second frame body and is configured to clamp the other side of the workpiece, and the rotating shaft of the workpiece extends from the first actuating mechanism to the second actuating mechanism.

The present invention provides a rotary drive mechanism, comprising: the device comprises a first frame body, a first executing mechanism, a second frame body and a second executing mechanism. The first actuating mechanism is arranged on the first frame body, the second actuating mechanism is arranged on the second frame body, and the second frame body and the first frame body are arranged at intervals, so that an actuating space exists between the first actuating mechanism and the second actuating mechanism. In the working process of the rotary driving mechanism, the first executing mechanism and the second executing mechanism respectively clamp two ends of a workpiece to ensure the positioning of the workpiece; then first actuating mechanism compares in first support body and rotates to drive the work piece rotation, realize the automatic upset of work piece. In particular, the axis of rotation of the workpiece extends from the first actuator toward the second actuator, so that the workpiece can be fully displayed to a worker on one side of the workpiece.

In particular, the rotary drive mechanism can be used in an axle production line. After the axle is welded, a worker is required to check whether the quality of a welding seam of an off-line assembly (hereinafter referred to as a workpiece) formed by welding the axle tube and the tail plate is qualified, and meanwhile, repair welding is carried out on a position which is partially unqualified. Therefore, the rotary driving mechanism can well assist workers to operate, the labor intensity of the workers is reduced, the production efficiency is improved, and the defects of welding seams are eliminated.

Specifically, when the work piece welding is accomplished and is transported on the rotary driving mechanism, axial both ends of work piece are centre gripping respectively to first actuating mechanism and second actuating mechanism, and the staff that is located work piece side this moment can overhaul the welding condition of work piece one side, treats this one side welding condition and overhauls the back of accomplishing, and first actuating mechanism drive work piece is along its self axial rotation for the opposite side of work piece is towards the staff, and the staff alright overhauls the opposite side of work piece this moment. So operate, accessible rotary driving mechanism centre gripping and rotation work piece to can show the work piece completely in the front of the staff, do not need the staff to overturn the work piece on the one hand, effectively reduce workman's intensity of labour, the automation mechanized operation can be realized to another side, and the production mode of adaptation assembly line, the staff need not to remove the opposite side of vehicle, has played good additional effect, has promoted staff's operating efficiency.

The rotary drive mechanism according to the above aspect of the present invention may further have the following additional features:

in the above technical solution, the first actuator includes: the rotating structure is rotatably arranged on the first frame body; the first clamping structure is arranged on the rotating structure and is configured to be used for clamping one side of the workpiece and driving the workpiece to rotate under the driving of the rotating structure.

In this technical scheme, first actuating mechanism includes rotating-structure and first clamping structure. Wherein, rotating-structure rotationally sets up on first support body, and first clamping structure sets up on rotating-structure to can rotate under rotating-structure's drive. That is, in the use process of the rotary driving mechanism, the first clamping structure clamps one end of the workpiece, and the rotatable structure drives the workpiece to rotate, so that the workpiece is automatically turned over.

In any of the above technical solutions, the rotation structure includes: the rotating seat is rotatably connected with the frame body, and the first clamping structure is arranged on the rotating seat; and the rotary driving component is connected with the rotary seat and is configured to drive the rotary seat to rotate.

In this solution, the rotating structure includes a rotating base and a rotation driving part. The first clamping structure is arranged on the rotating seat; the rotary driving part is arranged on the first frame body and is connected with the rotary seat. When the rotary driving mechanism is used, the rotary driving part can directly drive the rotary shaft to rotate, and then the purpose of turning over the workpiece is achieved. Specifically, the rotary drive means may employ a motor.

In any of the above technical solutions, the first actuator further includes: the positioning groove is arranged on the rotating seat; the positioning driving part is arranged on the first frame body; and the positioning piece is connected with the positioning driving part and is configured to extend into or withdraw from the positioning groove under the driving of the positioning driving part.

In this technical scheme, first actuating mechanism still includes positioning groove, location drive part and setting element. The positioning driving part is arranged on the first frame body, and the positioning part is connected with the positioning driving part and can extend into or withdraw from the positioning groove under the driving of the positioning driving part. During the process of overhauling or welding by workers, the workpieces do not need to be rotated, and are required to be stable on the contrary; at the moment, the positioning driving part drives the positioning piece to stretch into the positioning groove, so that the rotating seat is positioned, and the relative position stability of the workpiece is ensured. When a worker overhauls or welds one side of the workpiece, the workpiece needs to be turned over; at the moment, the positioning driving part drives the positioning part to exit from the positioning groove, the positioning of the rotating seat is released, and the rotating driving part can directly drive the rotating seat to rotate at the moment, so that the workpiece is driven to turn over, and the purpose of turning over the workpiece is achieved.

In any of the above technical solutions, the first actuator further includes: the travel switch is arranged on the first frame body; the trigger piece is arranged on the rotating seat and can trigger at least one travel switch under the driving of the rotating seat; and the controller is electrically connected with the at least one travel switch and the rotary driving component and is configured to control the rotary driving component to work according to the triggering result of the at least one travel switch.

In this solution, the first actuator further comprises at least one travel switch, a trigger, and a controller. Wherein, at least one travel switch sets up on first support body, triggers the piece and sets up on the roating seat, triggers the piece and can rotate along with the roating seat to can trigger at least one travel switch at the rotation in-process. In addition, the controller is electrically connected with the at least one travel switch and the rotary driving component, and can control the rotary driving component to work according to the triggering result of the at least one travel switch, so that the rotation angle of the workpiece is ensured, and the workpiece is prevented from being overturned excessively. Specifically, the controller can control the rotating speed of the rotary driving part according to the triggering result of at least one travel switch, and can also control the rotary driving part to stop working under the condition that the workpiece rotates in place.

In any of the above solutions, at least one of the travel switches comprises: the first travel switch is arranged on the first frame body; and the second travel switch is arranged on the first frame body and is distributed at intervals with the first travel switch, and the trigger piece successively triggers the first travel switch and the second travel switch in the process that the rotating seat rotates along the first direction.

In this solution, the at least one travel switch comprises a first travel switch and a second travel switch. Wherein, first travel switch and second travel switch set up on first support body to interval distribution on first support body. In the process that the rotating seat rotates along the first direction, the trigger piece triggers the first travel switch and the second travel switch in sequence. Wherein, after one side of work piece overhauls and the completion of repair welding, the drive roating seat rotates along first direction.

Specifically, the second travel switch corresponds to a preset angle (i.e. after the rotating seat rotates by the preset angle in the first direction, the trigger can trigger the second travel switch, and the preset angle can be 180 °). Wherein, when the staff overhauls and repair-welds one side of accomplishing the work piece, need overturn the work piece and overhaul and repair-weld the opposite side. In the process of overturning the workpiece, after the workpiece is overturned along the first direction by a preset angle, the workpiece is overturned in place, the trigger piece triggers the second travel switch, and the stop work of the rotary driving component is controlled at the moment, so that the workpiece is prevented from being overturned excessively.

In addition, the angle corresponding to the first travel switch is smaller than a preset angle (namely, after the rotating seat rotates by the angle along the first direction, the trigger piece can trigger the first travel switch). Wherein, when the staff overhauls and repair-welds one side of accomplishing the work piece, need overturn the work piece and overhaul and repair-weld the opposite side. In the process of turning over the workpiece, the workpiece triggers the first travel switch to show that the workpiece is not turned over in place, but is turned over by a certain angle, and the workpiece is likely to be turned over in place.

In any of the above solutions, at least one of the travel switches comprises: the third travel switch is arranged on the first frame body; and the fourth travel switch is arranged on the first frame body and is distributed at intervals with the third travel switch, and the trigger piece triggers the third travel switch and the fourth travel switch successively in the process that the rotating seat rotates along the second direction.

In this solution, the at least one travel switch comprises a third travel switch and a fourth travel switch. The third travel switch and the fourth travel switch are arranged on the first frame body and are distributed on the first frame body at intervals. In the process that the rotating seat rotates along the first direction, the trigger piece triggers the third travel switch and the fourth travel switch in sequence. After the other side of the workpiece is overhauled and repaired, the rotary seat is driven to rotate along the second direction, and the workpiece is guaranteed to reset. The first direction is opposite to the second direction, one of which may be clockwise and the other counterclockwise.

Specifically, the fourth travel switch corresponds to a preset angle (i.e. after the rotating base rotates by the preset angle in the second direction, the triggering member may trigger the fourth travel switch, and the preset angle may be 180 °). Wherein, when the staff overhauls and repair-welds the opposite side of accomplishing the work piece, need the reversal to rotate the work piece and come the reset work piece. In the process of resetting the workpiece, after the workpiece is overturned along the second direction by a preset angle, the workpiece is overturned in place, the triggering piece triggers the fourth travel switch, the stop work of the rotary driving part is controlled at the moment, and the workpiece is prevented from being overturned and reset excessively.

In addition, the angle corresponding to the third stroke switch is smaller than the preset angle (namely, after the rotating seat rotates by the angle in the second direction, the triggering piece can trigger the third stroke switch). Wherein, when the staff overhauls and repair-welds the opposite side of accomplishing the work piece, need the reversal to rotate the work piece and come the reset work piece. In the process of resetting the workpiece, when the workpiece triggers the third travel switch to indicate that the workpiece is not reset in place but is reset at a certain angle, the workpiece is likely to be reset in place, the controller controls the speed reduction of the rotary driving part at the moment, so that the sudden stop of the motor when the workpiece is reset in place is avoided, and the condition that the workpiece is reset excessively due to the fact that the rotary driving part is insensitive to control can be avoided to a certain extent.

In any of the above technical solutions, the first actuator further includes: the limiting piece is arranged on the rotating seat; the first limiting part is arranged on the first frame body; the second limiting part is arranged on the first frame body and is distributed at intervals with the first limiting part; the rotating seat rotates along the first direction, the trigger piece triggers the limiting piece and the first limiting part in butt joint behind at least one travel switch, and the rotating seat rotates along the second direction, and the trigger piece triggers the limiting piece and the second limiting part in butt joint behind at least one travel switch.

In this technical solution, the first actuator further includes a limiting member, a first limiting portion and a second limiting portion. The first limiting part and the second limiting part are arranged on the first frame body, the limiting part is arranged on the rotating seat, the triggering part triggers at least one travel switch firstly in the process that the rotating seat rotates along the first direction, and if the rotating seat continues to rotate along the first direction, the limiting part can be abutted against the first limiting part; in the process that the rotating seat rotates along the second direction, the trigger piece triggers at least one travel switch firstly, and if the rotating seat continues to rotate along the second direction, the limiting piece can be abutted against the second limiting part. That is, the cooperation of the limiting part and the first limiting part can play a role in hard limiting in the process that the rotating seat rotates along the first direction, and the cooperation of the limiting part and the second limiting part can play a role in hard limiting in the process that the rotating seat rotates along the second direction, so that accidents caused by failure of at least one travel switch are avoided.

Specifically, in the process that the rotating seat rotates along the first direction, the trigger piece can trigger the first travel switch and the second travel switch in sequence. If the second travel switch is not in failure, the controller can control the rotary driving part to stop working after the trigger part triggers the second travel switch, and the workpiece is ensured to be turned in place. If the second travel switch fails, the controller can control the rotary driving part to continue working, the limiting part can be abutted against the first limiting part at the moment, and hard limiting is formed through the limiting part and the first limiting part, so that the workpiece is prevented from being overturned excessively.

Specifically, in the process that the rotating seat rotates along the second direction, the trigger piece can trigger the third travel switch and the fourth travel switch in sequence. If the fourth travel switch is not in failure, the controller can control the rotary driving part to stop working after the triggering part triggers the fourth travel switch, and the workpiece is ensured to be reset in place. If the fourth travel switch fails, the controller can control the rotary driving component to continue working, the limiting part can be abutted against the second limiting part at the moment, and hard limiting is formed through the limiting part and the second limiting part, so that excessive resetting of the workpiece is avoided.

In any of the above technical solutions, the second actuator includes: the mounting seat is arranged on the second frame body; and the second clamping structure is arranged on the mounting seat and is configured to clamp the other side of the workpiece.

In this solution, the second actuator includes a mount and a second clamping structure. Wherein, the mount pad sets up on the second support body, and second clamping structure sets up on rotating-structure. When the rotary driving mechanism is used, the second clamping structure clamps the other end of the workpiece and is matched with the first executing mechanism for use, the workpiece is clamped from two opposite positions, the stability of the workpiece is guaranteed, and particularly the stability of the workpiece in the rotating process is guaranteed.

In any of the above technical solutions, the second actuator further includes: the first rolling body is arranged on the mounting seat; and the second rolling body is arranged on the second clamping structure, and a clamping vacancy is formed between the second rolling body and the first rolling body.

In this embodiment, the second actuator further comprises a first rolling element and a second rolling element. The first rolling body is arranged on the mounting seat, the second rolling body is arranged on the second clamping structure, a clamping vacancy is formed between the first rolling body and the first rolling body, and the end part of the workpiece can extend into the clamping vacancy to realize clamping. Particularly, due to the arrangement of the first rolling body and the second rolling body, in the process that the workpiece rotates along with the first clamping structure, rolling friction exists between the workpiece and the mounting seat and between the workpiece and the second clamping structure, on one hand, smooth rotation of the workpiece is guaranteed, and on the other hand, abrasion of the workpiece, the mounting seat and the second clamping structure is avoided.

In addition, the first actuating mechanism is used as one end for driving the workpiece to rotate actively, and the second actuating mechanism is used as one end for driving the workpiece to rotate, so that the overall structure of the rotary driving mechanism can be effectively simplified, particularly, one set of rotary structure can be saved, and the cost of the rotary driving mechanism can be effectively reduced.

In any of the above technical solutions, the first actuator further includes: the supporting seat is arranged on the rotating seat and is configured for supporting a workpiece; and the supporting structure is connected with the rotating seat and extends towards the second frame body, and the supporting structure is configured to be used for supporting the workpiece.

In this technical scheme, first actuating mechanism still includes supporting seat and bearing structure. Wherein, supporting seat and bearing structure all set up on the roating seat, and bearing structure extends the setting towards second support body one side. Before the workpieces are overhauled and repaired, the workpieces are firstly placed on the supporting seat and the supporting structure and are supported through the supporting seat and the supporting structure. After the workpiece is placed in place, the first executing mechanism and the second executing mechanism respectively start to work and clamp two opposite sides of the workpiece, so that the position stability of the workpiece is guaranteed, and a worker can overhaul and repair weld the workpiece.

In any of the above technical solutions, the rotation driving mechanism further includes: the first proximity sensor is arranged on the supporting seat and is electrically connected with the controller; the second proximity sensor is arranged on the mounting seat of the second actuating mechanism and is electrically connected with the controller; the controller is further configured to: and controlling the rotary driving part to work according to the detection results of the first proximity sensor and the second proximity sensor.

In the technical scheme, the rotary driving mechanism further comprises a first proximity sensor and a second proximity sensor, the first proximity sensor and the second proximity sensor are electrically connected with the controller and are matched with each other, and the workpiece is placed in place before the first executing mechanism and the second executing mechanism start to work. Specifically, a first proximity sensor is arranged on the supporting seat, a second proximity sensor is arranged on the mounting seat of the second actuating mechanism, and the first proximity sensor and the second proximity sensor respectively detect whether two ends of a workpiece are placed in place. The controller controls the first actuating mechanism and the second actuating mechanism to work under the condition that the workpiece is placed in place; if the workpiece is not placed in place, the controller can prompt a worker, and the worker can adjust the position of the workpiece until the workpiece is placed in place.

In any of the above technical solutions, the rotation driving mechanism further includes: the first frame body and the second frame body are connected with the sliding rail in a sliding manner; and the driving structure is arranged on the base and is connected with the first frame body and the second frame body, and the driving structure is configured to drive the first frame body and the second frame body to simultaneously move along opposite directions.

In this solution, the rotation driving mechanism further includes a base and a driving structure. The base is provided with a slide rail, and the first frame body and the second frame body are connected with the slide rail in a sliding manner; the driving structure is arranged on the base and connected with the first frame body and the second frame body. In the working process of the rotary driving mechanism, the driving structure can drive the first support body and the second support body to slide along the slide rail, the sliding directions of the first support body and the second support body are different, the distance between the first support body and the second support body can be adjusted, and the distance between the first actuating mechanism and the second actuating mechanism can be adjusted.

The distance between the first actuator and the second actuator determines the size of the workpiece that can be gripped by the rotary drive. Therefore, based on the design, the rotary driving mechanism can be applied to the overhaul and repair welding of workpieces with different lengths, the applicability of the rotary driving mechanism is greatly improved, the rotary driving mechanism can be applied to different workpieces, the use frequency of the rotary driving mechanism is improved, and the cost of the rotary driving mechanism is reduced.

In any of the above technical solutions, the driving structure includes: a motor; the first end of the commutator is connected with an output shaft of the motor; the first coupling is connected with the second end of the commutator; the first lead screw is connected with the first coupler and the first frame body; the second coupler is connected with the third end of the commutator; and the second lead screw is connected with the second coupling and the second frame body.

In the technical scheme, the driving structure comprises a motor, a commutator, a first coupler, a first lead screw, a second coupler and a second lead screw. The first end of the commutator is connected with an output shaft of the motor, the second end of the commutator is connected with the first coupler, the first coupler is connected with the first lead screw, the first lead screw is connected with the first frame body, and therefore the motor can drive the first frame body to rotate. In addition, the third end of the commutator is connected with a second coupler, the second coupler is connected with a second lead screw, and the second lead screw is connected with the second frame body, so that the motor can drive the second frame body to rotate. In addition, first lead screw and second lead screw are located the both sides of commutator, and first lead screw and second lead screw drive opposite direction, through motor drive first lead screw and second lead screw through rotating, can drive first support body and second support body and slide along the slide rail simultaneously to the slip direction of first support body and second support body is different. Specifically, a first sliding seat is arranged on the first frame body and is connected with one part of sliding rails in a sliding mode, a second sliding seat is arranged on the second frame body and is connected with the other part of sliding rails in a sliding mode.

That is, based on the above arrangement, the first frame body and the second frame body can be driven by one motor to slide on the base, so that on one hand, the distance between the first actuating mechanism and the second actuating mechanism is adjustable, the rotary driving mechanism can be suitable for workpieces with different specifications and sizes, on the other hand, the whole structure of the rotary driving mechanism can be simplified, at least one motor is particularly saved, and the cost of the rotary driving mechanism is reduced.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a rotary drive mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic view of the rotary drive mechanism of an embodiment of the present invention from another perspective;

FIG. 3 is a schematic view of the rotary drive mechanism of an embodiment of the present invention from another perspective;

FIG. 4 is an enlarged view of a portion A of the rotary drive mechanism shown in FIG. 1;

FIG. 5 is an enlarged view of a portion of the rotary drive mechanism shown in FIG. 2 at B;

fig. 6 is a partially enlarged view of the rotation driving mechanism shown in fig. 3 at C.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 6 is:

102 a first frame body, 104 a first actuator, 106 a second frame body, 108 a second actuator, 110 a rotating structure, 112 a first clamping structure, 114 a rotating base, 116 a rotating driving part, 118 a positioning groove, 120 a positioning driving part, 122 a positioning part, 124 a trigger, 126 a first travel switch, 128 a second travel switch, 130 a third travel switch, 132 a fourth travel switch, 134 a limiting part, 136 a first limiting part, 138 a second limiting part, 140 a mounting base, 142 a second clamping structure, 144 a first rolling body, 146 a second rolling body, 148 a supporting base, 150 a supporting structure, 152 a first proximity sensor, 154 a second proximity sensor, 156 a base, 158 a sliding rail, 160 a driving structure, 162 a motor, 164 a commutator, 166 a first coupler, 168 a first lead screw, 170 a second coupler, 172 a second lead screw, 174 a first slider, 176 a second slider, and 200 workpieces.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

A rotary drive mechanism provided according to some embodiments of the present invention is described below with reference to fig. 1 to 6.

The first embodiment is as follows:

as shown in fig. 1, 2 and 3, a first embodiment of the present invention proposes a rotary drive mechanism including: a first frame 102, a first actuator 104, a second frame 106, and a second actuator 108.

The first actuator 104 is disposed on the first frame 102, the second actuator 108 is disposed on the second frame 106, and the second frame 106 and the first frame 102 are spaced apart from each other, such that an actuating space exists between the first actuator 104 and the second actuator 108. In the working process of the rotary driving mechanism, the first executing mechanism 104 and the second executing mechanism 108 respectively clamp two ends of the workpiece 200 to ensure the positioning of the workpiece 200; then, the first actuator 104 rotates relative to the first frame 102 and drives the workpiece 200 to rotate, and particularly, the rotation axis of the workpiece 200 extends from the first actuator 104 toward the second actuator 108, so that the workpiece 200 can be automatically turned over, and the workpiece 200 can be completely displayed to a worker on one side of the workpiece 200.

In particular, the rotary drive mechanism can be used in an axle production line. After the axle is welded, a worker is required to check whether the quality of a weld joint of an off-line assembly (hereinafter referred to as a workpiece 200) formed by welding the axle tube and the tail plate is qualified, and repair welding is performed on a position which is partially unqualified. Therefore, the rotary driving mechanism can well assist workers to operate, the labor intensity of the workers is reduced, the production efficiency is improved, and the defects of welding seams are eliminated.

Specifically, when the workpiece 200 is welded and conveyed to the rotary driving mechanism, the first executing mechanism 104 and the second executing mechanism 108 respectively clamp two axial ends of the workpiece 200, and a worker on one side of the workpiece can examine and repair the welding condition on one side of the workpiece 200. So operate, accessible rotary driving mechanism centre gripping and rotation work piece 200 to can show work piece 200 completely in the front of the staff, do not need the staff to overturn work piece 200 on the one hand, effectively reduce workman's intensity of labour, the automation mechanized operation can be realized to another side, and the production mode of adaptation assembly line, the staff need not to remove the opposite side of vehicle, has played good additional effect, has promoted staff's operating efficiency.

Example two:

as shown in fig. 1, 2 and 3, a second embodiment of the present invention proposes a rotary drive mechanism including: a first frame 102, a first actuator 104, a second frame 106, and a second actuator 108.

Wherein the first actuator 104 is disposed on the first frame 102, and the second actuator 108 is disposed on the second frame 106. In the working process of the rotary driving mechanism, the first executing mechanism 104 and the second executing mechanism 108 respectively clamp two ends of the workpiece 200 to ensure the positioning of the workpiece 200; then, the first actuator 104 rotates relative to the first frame 102 and drives the workpiece 200 to rotate, and particularly, the rotation axis of the workpiece 200 extends from the first actuator 104 toward the second actuator 108, so that the workpiece 200 can be automatically turned over, and the workpiece 200 can be completely displayed to a worker on one side of the workpiece 200.

Further, as shown in fig. 1, the first actuator 104 includes a rotating structure 110 and a first clamping structure 112. The rotating structure 110 is rotatably disposed on the first frame 102, and the first clamping structure 112 is disposed on the rotating structure 110 and can be driven by the rotating structure 110 to rotate.

That is, during the use of the rotary driving mechanism, the first clamping structure 112 clamps one end of the workpiece 200, and the rotatable structure 110 is driven to drive the workpiece 200 to rotate, so as to automatically turn over the workpiece 200.

In this embodiment, further, as shown in fig. 1, the rotating structure 110 includes a rotating base 114 and a rotation driving part 116. Wherein, the rotating base 114 is rotatably connected with the frame body, and the first clamping structure 112 is arranged on the rotating base 114; the rotation driving part 116 is disposed on the first frame 102 and is connected with the rotary base 114. During the use of the rotation driving mechanism, the rotation driving component 116 can directly drive the rotation shaft to rotate, thereby achieving the purpose of turning over the workpiece 200.

In this embodiment, further, as shown in fig. 6, the first actuator 104 further includes a positioning recess 118, a positioning driving member 120 and a positioning member 122.

The positioning groove 118 is disposed on the rotating base 114, the positioning driving member 120 is disposed on the first frame 102, and the positioning member 122 is connected to the positioning driving member 120 and can be driven by the positioning driving member 120 to extend into or retract from the positioning groove 118. During the process of overhauling or welding by workers, the workpiece 200 does not need to be rotated, but the workpiece 200 needs to be stable; at this time, the positioning driving component 120 drives the positioning component 122 to extend into the positioning groove 118, so as to position the rotating base 114, and ensure that the relative position of the workpiece 200 is stable. When the worker overhauls or welds one side of the workpiece 200, the workpiece 200 needs to be turned over; at this time, the positioning driving component 120 drives the positioning component 122 to exit the positioning groove 118, so as to release the positioning of the rotating seat 114, and at this time, the rotating driving component 116 can directly drive the rotating seat 114 to rotate, so as to drive the workpiece 200 to turn over, thereby achieving the purpose of turning over the workpiece 200.

Example three:

as shown in fig. 1, 2 and 3, a third embodiment of the present invention proposes a rotary drive mechanism including: a first frame 102, a first actuator 104, a second frame 106, and a second actuator 108.

Further, as shown in fig. 1, the first actuator 104 includes a rotating structure 110 and a first clamping structure 112. The rotating structure 110 is rotatably disposed on the first frame 102, and the first clamping structure 112 is disposed on the rotating structure 110 and can be driven to rotate by the rotating structure 110. The rotating structure 110 includes a rotating base 114 and a rotation driving part 116. The rotating base 114 is rotatably connected with the frame body, and the first clamping structure 112 is arranged on the rotating base 114; the rotation driving part 116 is disposed on the first frame 102 and is connected with the rotary base 114.

In this embodiment, as shown in fig. 4, further, the first actuator 104 further comprises at least one travel switch, a trigger 124, and a controller.

Wherein, at least one travel switch is arranged on the first frame 102, the trigger 124 is arranged on the rotating base 114, and the trigger 124 can rotate with the rotating base 114 and can trigger at least one travel switch in the rotating process. In addition, the controller is electrically connected with the at least one travel switch and the rotary driving component 116, and can control the rotary driving component 116 to work according to the triggering result of the at least one travel switch, so that the rotation angle of the workpiece 200 is ensured, and the workpiece 200 is prevented from being overturned excessively. Specifically, the controller may control the rotational speed of the rotational driving member 116 according to the triggering result of the at least one stroke switch, and may also control the rotational driving member 116 to stop working in a case where the workpiece 200 is rotated in place.

Example four:

as shown in fig. 1, 2 and 3, a fourth embodiment of the present invention proposes a rotary drive mechanism including: a first frame 102, a first actuator 104, a second frame 106, and a second actuator 108.

Further, as shown in fig. 1, the first actuator 104 includes a rotating structure 110 and a first clamping structure 112. The rotating structure 110 is rotatably disposed on the first frame 102, and the first clamping structure 112 is disposed on the rotating structure 110 and can be driven to rotate by the rotating structure 110. The rotating structure 110 includes a rotating base 114 and a rotation driving part 116. The rotating base 114 is rotatably connected with the first frame 102, and the first clamping structure 112 is disposed on the rotating base 114; the rotation driving part 116 is disposed on the first frame 102 and is connected with the rotary base 114.

In this embodiment, further, as shown in fig. 4, the first actuator 104 also includes a first travel switch 126 and a second travel switch 128. Wherein, the first travel switch 126 and the second travel switch 128 are disposed on the first frame 102 and are spaced apart on the first frame 102. During rotation of the rotary base 114 in the first direction, the trigger 124 triggers the first travel switch 126 and the second travel switch 128 in sequence. After the repair and repair welding of one side of the workpiece 200 is completed, the rotary base 114 is driven to rotate in the first direction.

Specifically, the second travel switch 128 corresponds to a preset angle (i.e., the trigger 124 can trigger the second travel switch 128 after the rotary base 114 rotates in the first direction by the preset angle), and the preset angle may be 180 °. Wherein, when the worker overhauls and repair-welds one side of the workpiece 200, the worker needs to turn over the workpiece 200 and overhauls and repair-welds the other side. In the process of turning the workpiece 200, after the workpiece 200 is turned over by a predetermined angle along the first direction, the workpiece 200 is turned over to the right position, and the triggering member 124 triggers the second travel switch 128, so as to control the rotation driving component 116 to stop working, thereby preventing the workpiece 200 from being turned over excessively.

In addition, the angle corresponding to the first travel switch 126 is smaller than the preset angle (i.e. after the rotating base 114 rotates by the angle in the first direction, the triggering member 124 can trigger the first travel switch 126). Wherein, when the worker overhauls and repair-welds one side of the workpiece 200, the worker needs to turn over the workpiece 200 and overhauls and repair-welds the other side. In the process of turning over the workpiece 200, the workpiece 200 triggers the first travel switch 126 to indicate that the workpiece 200 is not yet turned over to the right position, but has already been turned over by a certain angle, which may be about to be turned over to the right position, at this time, the controller controls the speed reduction of the rotary driving component 116 to prevent the motor 162 from stopping suddenly when the workpiece 200 is turned over to the right position, and at the same time, the situation that the workpiece 200 is turned over excessively due to the insensitive control of the rotary driving component 116 can be avoided to a certain extent.

In this embodiment, as shown in fig. 4, the first actuator 104 further includes a limiting member 134 and a first limiting portion 136. The first position-limiting part 136 is disposed on the first frame 102, and the position-limiting part 134 is disposed on the rotating base 114. During the rotation of the rotating base 114 along the first direction, the triggering component 124 triggers at least one travel switch, and if the rotating base 114 continues to rotate along the first direction, the limiting component 134 abuts against the first limiting portion 136. That is, the engagement between the limiting element 134 and the first limiting portion 136 can serve as a hard limiting function during the rotation of the rotating base 114 along the first direction.

Specifically, during rotation of the rotary base 114 in the first direction, the trigger 124 will trigger the first travel switch 126 and the second travel switch 128 in sequence. If the second travel switch 128 is not disabled, the controller can control the rotation driving component 116 to stop working after the triggering component 124 triggers the second travel switch 128, so as to ensure that the workpiece 200 is turned over in place. If the second travel switch 128 fails, the controller will control the rotation driving component 116 to continue to operate, and at this time, the limiting component 134 will abut against the first limiting portion 136, so that a hard limiting is formed by the limiting component 134 and the first limiting portion 136, and the workpiece 200 is prevented from being turned over excessively.

Example five:

as shown in fig. 1, 2 and 3, a fifth embodiment of the present invention proposes a rotary drive mechanism including: a first frame 102, a first actuator 104, a second frame 106, and a second actuator 108.

In this embodiment, further, as shown in fig. 6, the first actuator 104 further includes a third travel switch 130 and a fourth travel switch 132. Wherein, the third travel switch 130 and the fourth travel switch 132 are disposed on the first frame 102 and are spaced apart on the first frame 102. During the rotation of the rotary base 114 in the first direction, the trigger 124 triggers the third travel switch 130 and the fourth travel switch 132 in sequence. After the other side of the workpiece 200 is repaired and the repair welding is completed, the rotary seat 114 is driven to rotate along the second direction, so that the workpiece 200 is ensured to be reset.

Specifically, the fourth travel switch 132 corresponds to a predetermined angle (i.e., the trigger 124 can trigger the fourth travel switch 132 after the rotary base 114 rotates in the second direction by the predetermined angle), and the predetermined angle may be 180 °. Wherein, when the worker overhauls and repair-welds the other side of the workpiece 200, the workpiece 200 needs to be restored by rotating the workpiece 200 in the reverse direction. In the process of resetting the workpiece 200, after the workpiece 200 is turned over by a predetermined angle in the second direction, the workpiece 200 is turned over to the right position, and the triggering member 124 triggers the fourth travel switch 132, so as to control the rotation driving component 116 to stop working, thereby preventing the workpiece 200 from being turned over and reset excessively.

In addition, the angle corresponding to the third stroke switch 130 is smaller than the preset angle (i.e. after the rotating base 114 rotates by the angle in the second direction, the triggering member 124 can trigger the third stroke switch 130). Wherein, when the worker overhauls and repair-welds the other side of the workpiece 200, the workpiece 200 needs to be restored by rotating the workpiece 200 in the reverse direction. During the process of resetting the workpiece 200, when the workpiece 200 triggers the third stroke switch 130 to indicate that the workpiece 200 is not reset to the right position, but has been reset to a certain angle, which may be about to be reset to the right position, the controller controls the speed reduction of the rotary driving part 116 at this time, so as to avoid the sudden stop of the motor 162 when the workpiece 200 is reset to the right position, and to a certain extent, avoid the situation that the workpiece 200 is reset excessively due to the control insensitivity of the rotary driving part 116.

In this embodiment, as shown in fig. 4 and 6, the first actuator 104 further includes a limiting member 134 and a second limiting portion 138. The second position-limiting portion 138 is disposed on the first frame 102, and the position-limiting member 134 is disposed on the rotating base 114. During the rotation of the rotating base 114 in the second direction, the triggering component 124 triggers at least one travel switch, and if the rotating base 114 continues to rotate in the second direction, the limiting component 134 abuts against the second limiting portion 138. That is, the engagement between the limiting element 134 and the second limiting portion 138 can play a role of hard limiting during the rotation of the rotary base 114 in the second direction, so as to avoid accidents caused by the failure of the fourth travel switch 132.

Specifically, during the rotation of the rotary base 114 in the second direction, the trigger 124 may trigger the third travel switch 130 and the fourth travel switch 132 in sequence. If the fourth travel switch 132 is not disabled, the controller can control the rotation driving component 116 to stop working after the triggering component 124 triggers the fourth travel switch 132, so as to ensure that the workpiece 200 is reset in place. If the fourth travel switch 132 fails, the controller controls the rotation driving component 116 to continue to operate, and at this time, the limiting component 134 abuts against the second limiting portion 138, so that a hard limiting is formed by the limiting component 134 and the second limiting portion 138, and the workpiece 200 is prevented from being excessively reset.

Example six:

as shown in fig. 1, 2 and 3, a sixth embodiment of the present invention proposes a rotary drive mechanism including: a first frame 102, a first actuator 104, a second frame 106, and a second actuator 108.

In this embodiment, further, as shown in fig. 4, the first actuator 104 also includes a first travel switch 126 and a second travel switch 128. The first travel switch 126 and the second travel switch 128 are disposed on the first housing 102 and are spaced apart on the first housing 102. During rotation of the rotary base 114 in the first direction, the trigger 124 triggers the first travel switch 126 and the second travel switch 128 in sequence. After the repair and repair welding of one side of the workpiece 200 is completed, the rotary base 114 is driven to rotate in the first direction.

In this embodiment, as shown in fig. 4 and 6, the first actuator 104 further includes a limiting member 134, a first limiting portion 136 and a second limiting portion 138. The first limiting portion 136 and the second limiting portion 138 are disposed on the first frame 102, the limiting member 134 is disposed on the rotating base 114, the triggering member 124 triggers at least one travel switch during the rotation of the rotating base 114 along the first direction, and if the rotating base 114 continues to rotate along the first direction, the limiting member 134 abuts against the first limiting portion 136; during the rotation of the rotating base 114 in the second direction, the triggering component 124 triggers at least one travel switch, and if the rotating base 114 continues to rotate in the second direction, the limiting component 134 abuts against the second limiting portion 138. That is, the matching between the limiting element 134 and the first limiting portion 136 can perform a hard limiting function during the rotation of the rotating base 114 along the first direction, and the matching between the limiting element 134 and the second limiting portion 138 can perform a hard limiting function during the rotation of the rotating base 114 along the second direction, so as to avoid an accident caused by the failure of at least one travel switch.

In particular, the first direction is opposite to the second direction, one of which may be clockwise and the other counter-clockwise.

Example seven:

as shown in fig. 1, 2 and 3, a seventh embodiment of the present invention proposes a rotary drive mechanism including: a first frame 102, a first actuator 104, a second frame 106, and a second actuator 108.

Further, as shown in fig. 1 and 5, the second actuator 108 includes a mount 140 and a second clamp structure 142. Wherein, the mounting seat 140 is disposed on the second frame 106, and the second clamping structure 142 is disposed on the rotating structure 110. During the use of the rotary driving mechanism, the second clamping structure 142 clamps the other end of the workpiece 200 and is used in cooperation with the first actuator 104 to clamp the workpiece 200 from two opposite positions, so as to ensure the stability of the workpiece 200, especially the stability of the workpiece 200 during the rotation.

In this embodiment, further, as shown in fig. 5, the second actuator 108 further includes a first rolling element 144 and a second rolling element 146. The first rolling element 144 is disposed on the mounting seat 140, the second rolling element 146 is disposed on the second clamping structure 142, and a clamping vacancy is formed between the first rolling element 144 and the first rolling element 144, into which an end of the workpiece 200 can extend to achieve clamping.

In particular, due to the arrangement of the first rolling element 144 and the second rolling element 146, rolling friction is generated between the workpiece 200 and the mounting seat 140 and the second clamping structure 142 during the rotation of the workpiece 200 along with the first clamping structure 112, so that on one hand, smooth rotation of the workpiece 200 is ensured, and on the other hand, wear of the workpiece 200, the mounting seat 140 and the second clamping structure 142 is avoided.

In addition, the first actuator 104 is used as the end for driving the workpiece 200 to rotate, and the second actuator 108 is used as the end for driving the workpiece to rotate, so that the overall structure of the rotary driving mechanism can be effectively simplified, especially, one set of rotary structure 110 can be saved, and the cost of the rotary driving mechanism can be effectively reduced.

Example eight:

as shown in fig. 1, 2 and 3, an eighth embodiment of the present invention proposes a rotary drive mechanism including: a first frame 102, a first actuator 104, a second frame 106, and a second actuator 108.

As shown in fig. 1, the first actuator 104 is disposed on the first frame 102, and the second actuator 108 is disposed on the second frame 106. In the working process of the rotary driving mechanism, the first executing mechanism 104 and the second executing mechanism 108 respectively clamp two ends of the workpiece 200 to ensure the positioning of the workpiece 200; then, the first actuator 104 rotates relative to the first frame 102 and drives the workpiece 200 to rotate, and particularly, the rotation axis of the workpiece 200 extends from the first actuator 104 toward the second actuator 108, so that the workpiece 200 can be automatically turned over, and the workpiece 200 can be completely displayed to a worker on one side of the workpiece 200.

In addition, as shown in fig. 3 and 4, the first actuator 104 further includes a support base 148 and a support structure 150. The supporting base 148 and the supporting structure 150 are disposed on the rotating base 114, and the supporting structure 150 extends toward one side of the second frame 106. Before the work piece 200 is repaired and repair welded, the work piece 200 is first placed on the support base 148 and the support structure 150 and supported by the support base 148 and the support structure 150. After the workpiece 200 is placed in place, the first executing mechanism 104 and the second executing mechanism 108 respectively start to work and clamp two opposite sides of the workpiece 200, so that the position of the workpiece 200 is stable, and a worker can overhaul and repair-weld the workpiece 200.

Also, the second actuator 108 includes a mount 140 and a second clamp structure 142. Wherein, the mounting seat 140 is disposed on the second frame 106, and the second clamping structure 142 is disposed on the rotating structure 110. During the use of the rotary driving mechanism, the second clamping structure 142 clamps the other end of the workpiece 200 and is used in cooperation with the first actuator 104 to clamp the workpiece 200 from two opposite positions, so as to ensure the stability of the workpiece 200, especially the stability of the workpiece 200 during the rotation.

In this embodiment, further, as shown in fig. 4 and 5, the rotary drive mechanism further includes a first proximity sensor 152 and a second proximity sensor 154, the first proximity sensor 152 and the second proximity sensor 154 being electrically connected to the controller and cooperating to ensure that the workpiece 200 has been placed in position before the first actuator 104 and the second actuator 108 begin operating.

Specifically, a first proximity sensor 152 is provided on the support base 148, a second proximity sensor 154 is provided on the mount base 140 of the second actuator 108, and the first proximity sensor 152 and the second proximity sensor 154 respectively detect whether both ends of the workpiece 200 are placed in position. The controller will control the first actuator 104 and the second actuator 108 to operate only when the workpiece 200 is in place; if the workpiece 200 is not in place, the controller may prompt the operator to adjust the position of the workpiece 200 until the workpiece 200 is in place.

Example nine:

as shown in fig. 1, 2 and 3, a ninth embodiment of the present invention proposes a rotary drive mechanism including: a first frame 102, a first actuator 104, a second frame 106, a second actuator 108, a base 156, and a drive structure 160.

Further, as shown in fig. 1, 2 and 3, the rotational drive mechanism further includes a base 156 and a drive structure 160. The base 156 is provided with a slide rail 158, and the first frame 102 and the second frame 106 are both connected with the slide rail 158 in a sliding manner; the driving structure 160 is disposed on the base 156 and is connected to the first and

second bodies

102 and 106. During the operation of the rotary driving mechanism, the driving structure 160 may drive the first frame 102 and the second frame 106 to slide along the sliding rails 158, and the sliding directions of the first frame 102 and the second frame 106 are different, so as to adjust the distance between the first frame 102 and the second frame 106, and further adjust the distance between the first actuator 104 and the second actuator 108.

In particular, the distance between the first actuator 104 and the second actuator 108 determines the size of the workpiece 200 that the rotary drive mechanism can grip. Therefore, based on the design, the rotary driving mechanism can be applied to the overhaul and repair welding of workpieces 200 with different lengths, the applicability of the rotary driving mechanism is greatly improved, the rotary driving mechanism can be applied to different workpieces 200, the use frequency of the rotary driving mechanism is improved, and the cost of the rotary driving mechanism is reduced.

Further in this embodiment, as shown in fig. 1, the drive structure 160 includes a motor 162, a commutator 164, a first coupling 166, a first lead screw 168, a second coupling 170, and a second lead screw 172.

A first end of the commutator 164 is connected to an output shaft of the motor 162, a second end of the commutator 164 is connected to a first coupling 166, the first coupling 166 is connected to a first lead screw 168, and the first lead screw 168 is connected to the first frame 102, so that the motor 162 can drive the first frame 102 to rotate. In addition, the third end of the commutator 164 is connected to a second coupling 170, the second coupling 170 is connected to a second lead screw 172, and the second lead screw 172 is connected to the second frame 106, so that the motor 162 can drive the second frame 106 to rotate. In addition, the first lead screw 168 and the second lead screw 172 are located at two sides of the commutator 164, and the driving directions of the first lead screw 168 and the second lead screw 172 are opposite, the first lead screw 168 and the second lead screw 172 are driven by the motor 162 to rotate, so that the first rack 102 and the second rack 106 can be driven to slide along the slide rail 158 at the same time, and the sliding directions of the first rack 102 and the second rack 106 are different.

That is, based on the above arrangement, the first frame 102 and the second frame 106 can be driven by one motor 162 to slide on the base 156, which ensures that the distance between the first actuator 104 and the second actuator 108 is adjustable, so that the rotary driving mechanism can be applied to workpieces 200 with different specifications and sizes, and simplifies the overall structure of the rotary driving mechanism, especially saves at least one motor 162, and reduces the cost of the rotary driving mechanism.

The first embodiment is as follows:

as shown in fig. 1, 2 and 3, the present embodiment proposes a rotation drive mechanism including: a first frame 102, a first actuator 104, a second frame 106, and a second actuator 108.

In this embodiment, further, as shown in fig. 1, the first actuator 104 includes a rotating structure 110 and a first clamping structure 112. The rotating structure 110 is rotatably disposed on the first frame 102, and the first clamping structure 112 is disposed on the rotating structure 110 and can be driven to rotate by the rotating structure 110.

Further in this embodiment, the rotating structure 110 includes a rotating base 114 and a rotating drive member 116. Wherein, the rotating base 114 is rotatably connected with the frame body, and the first clamping structure 112 is arranged on the rotating base 114; the rotation driving part 116 is disposed on the first frame 102 and is connected with the rotary base 114.

In this embodiment, further, as shown in fig. 6, the first actuator 104 further includes a positioning recess 118, a positioning driving member 120 and a positioning member 122. The positioning groove 118 is disposed on the rotating base 114, the positioning driving member 120 is disposed on the first frame 102, and the positioning member 122 is connected to the positioning driving member 120 and can be driven by the positioning driving member 120 to extend into or retract from the positioning groove 118.

In this embodiment, further, as shown in fig. 4 and 6, the first actuator 104 further includes at least one travel switch, a trigger 124, and a controller. Wherein, at least one travel switch is arranged on the first frame 102, the trigger 124 is arranged on the rotating base 114, and the trigger 124 can rotate with the rotating base 114 and can trigger at least one travel switch in the rotating process. The controller is electrically connected to the at least one travel switch and the rotary drive member 116, and is operable to control the operation of the rotary drive member 116 based on the activation of the at least one travel switch.

In this embodiment, further, as shown in fig. 4, the at least one travel switch includes a first travel switch 126 and a second travel switch 128. Wherein, the first travel switch 126 and the second travel switch 128 are disposed on the first frame 102 and are spaced apart on the first frame 102. During rotation of the rotary base 114 in the first direction, the trigger 124 triggers the first travel switch 126 and the second travel switch 128 in sequence.

In this embodiment, further, as shown in fig. 6, the at least one travel switch includes a third travel switch 130 and a fourth travel switch 132. Wherein, the third travel switch 130 and the fourth travel switch 132 are disposed on the first frame 102 and are spaced apart on the first frame 102. During the rotation of the rotary base 114 in the first direction, the trigger 124 triggers the third travel switch 130 and the fourth travel switch 132 in sequence.

In this embodiment, as shown in fig. 4 and 6, the first actuator 104 further includes a limiting member 134, a first limiting portion 136 and a second limiting portion 138. The first and second position-limiting

portions

136 and 138 are disposed on the first frame 102, and the position-limiting member 134 is disposed on the rotating base 114. The matching between the limiting member 134 and the first limiting portion 136 can play a role of hard limiting during the rotation of the rotating base 114 along the first direction, and the matching between the limiting member 134 and the second limiting portion 138 can play a role of hard limiting during the rotation of the rotating base 114 along the second direction, so as to avoid accidents caused by the failure of at least one travel switch.

In this embodiment, further, as shown in fig. 1 and 5, the second actuator 108 includes a mount 140 and a second clamp structure 142. Wherein, the mounting seat 140 is disposed on the second frame 106, and the second clamping structure 142 is disposed on the rotating structure 110.

In this embodiment, further, as shown in fig. 3 and 4, the first actuator 104 further includes a support base 148 and a support structure 150. The supporting base 148 and the supporting structure 150 are disposed on the rotating base 114, and the supporting structure 150 extends toward one side of the second frame 106. Before the work piece 200 is repaired and repair welded, the work piece 200 is first placed on the support base 148 and the support structure 150 and supported by the support base 148 and the support structure 150.

In this embodiment, further, as shown in fig. 4 and 5, the rotary drive mechanism further includes a first proximity sensor 152 and a second proximity sensor 154, the first proximity sensor 152 and the second proximity sensor 154 being electrically connected to the controller and cooperating to ensure that the workpiece 200 has been placed in position before the first actuator 104 and the second actuator 108 begin operating. The controller will control the operation of the first actuator 104 and the second actuator 108 only when the workpiece 200 is in place.

In this embodiment, further, as shown in fig. 1, 2 and 3, the rotational drive mechanism further includes a base 156 and a drive structure 160. The base 156 is provided with a slide rail 158, and the first frame 102 and the second frame 106 are both connected with the slide rail 158 in a sliding manner; the driving structure 160 is disposed on the base 156 and is connected to the first and

second bodies

102 and 106. The driving structure 160 may drive the first rack 102 and the second rack 106 to slide along the slide rail 158, and the sliding directions of the first rack 102 and the second rack 106 are different.

Further in this embodiment, as shown in fig. 1, the drive structure 160 includes a motor 162, a commutator 164, a first coupling 166, a first lead screw 168, a second coupling 170, and a second lead screw 172. A first end of the commutator 164 is connected to an output shaft of the motor 162, a second end of the commutator 164 is connected to a first coupling 166, the first coupling 166 is connected to a first lead screw 168, and the first lead screw 168 is connected to the first frame 102, such that the motor 162 can drive the first frame 102 to rotate. In addition, the third end of the commutator 164 is connected to a second coupling 170, the second coupling 170 is connected to a second lead screw 172, and the second lead screw 172 is connected to the second frame 106, so that the motor 162 can drive the second frame 106 to rotate.

In addition, the first lead screw 168 and the second lead screw 172 are located at two sides of the commutator 164, and the driving directions of the first lead screw 168 and the second lead screw 172 are opposite, the first lead screw 168 and the second lead screw 172 are driven by the motor 162 to rotate, so that the first rack 102 and the second rack 106 can be driven to slide along the slide rail 158 at the same time, and the sliding directions of the first rack 102 and the second rack 106 are different.

The second embodiment is as follows:

with the rapid development of the logistics industry in China, customers have higher requirements on the smoothness and the reliability of vehicles, and more automobiles select air suspension systems. With the higher and higher requirements of the automation degree of the automobile industry, the welding of the central shaft tube and the tail plate of the air suspension system is gradually replaced by the robot welding from the current manual welding. At present, the domestic axle production line has low automation degree and low welding quality.

Robotic welding will be a trend based on the need to increase the degree of automation of the axle production line. Due to the limitation of the welding accessibility range of the robot welding, all welding seams are difficult to weld by the robot. After the axle tube and the tail plate are welded by the robot, the carrying robot grabs the welded axle and tail plate assembly (hereinafter referred to as a workpiece 200) for offline, at the moment, partial welding seams need to be repaired and welded manually, the quality of the welding seams welded by the robot also needs workers to check whether the welding seams are qualified, and then repair measures are taken for unqualified welding seams. Therefore, special tooling equipment is needed to assist workers in welding, the labor intensity of the workers is reduced, the production efficiency is improved, and the defects of welding seams are eliminated. The present embodiment can solve the above problems.

As shown in fig. 1, 2 and 3, the rotary driving mechanism of the present embodiment can be used as a special device for off-line repair welding of the workpiece 200, which is used for positioning the workpiece 200, and defining the freedom of rotation of the workpiece 200 in its longitudinal direction, radial direction, and around its own axis.

Specifically, as shown in fig. 1, 2, and 3, the rotational drive mechanism includes a base 156, a first actuator 104, and a second actuator 108. As shown in fig. 1, the base 156 is a mounting base of the whole apparatus, and a first slide 174 and a second slide 176 are disposed on the base, the first slide 174 and the second slide 176 are both slidable along a length direction of the base 156, and the first slide 174 and the second slide 176 are respectively driven by a first lead screw 168 and a second lead screw 172, a motor 162 is disposed at an end of the first lead screw 168 and the second lead screw 172, and the motor 162 is driven by a commutator 164, a first coupling 166, and a second coupling 170 to simultaneously move the first slide 174 and the second slide 176 on the base 156 in opposite directions, so that the first slide 174 and the second slide 176 can be moved to appropriate positions according to a size of the workpiece 200.

As shown in fig. 1 and 4, the first actuator 104 is slidably connected to the first slide 174 through the first frame 102, and the first actuator 104 and the second actuator 108 cooperate to clamp two ends of the workpiece 200. As shown in fig. 1 and fig. 6, the first actuator 104 is provided with a rotation driving member 116, the rotation driving member 116 is provided with a rotation base 114, the rotation base 114 is provided with a positioning groove 118, the rotation base 114 is provided with a first limiting portion 136 and a second limiting portion 138, and the rotation driving member 116 can drive the rotation base 114 to rotate along the central axis of the shaft tube of the workpiece 200. Meanwhile, the first actuator 104 is provided with a positioning driving component 120, the positioning driving component 120 is provided with a positioning element 122, and the positioning element 122 can extend into the positioning groove 118 of the rotating seat 114 and retract under the driving of the positioning driving component 120, so as to lock and release the overturning movement. As shown in fig. 4, the first frame 102 is provided with a first travel switch 126, a second travel switch 128, a third travel switch 130, a fourth travel switch 132, a first limiting portion 136, and a second limiting portion 138. The rotary base 114 is further provided with a first clamping structure 112, a supporting base 148 and a supporting structure 150; the support base 148 is provided with a first proximity sensor 152.

As shown in fig. 1 and 5, the second actuator 108 is slidably connected to the second slide 176 via the second frame 106, and the second actuator 108 cooperates with the first actuator 104 for clamping two ends of the workpiece 200. The second frame 106 of the second actuator 108 is provided with a mounting base 140 and a second clamping structure 142. The mounting base 140 is provided with two first rolling bodies 144 and a second proximity sensor 154; a second rolling body 146 is provided on the second clamp structure 142.

When production is to be performed, as shown in fig. 1, the motor 162 drives the first slide 174 and the second slide 176 to the proper positions, and the transfer robot picks the workpiece 200 off-line from the previous process, and places the workpiece 200 on the support base 148, the two first rolling elements 144, and the support structure 150. The first proximity sensor 152 and the second proximity sensor 154 detect that the workpiece 200 is placed in place, then the first clamping structure 112 and the second clamping structure 142 are clamped, the positioning member 122 is driven by the positioning driving component 120 to retract from the positioning groove 118 of the rotary base 114, a worker controls the rotary driving component 116 to drive the rotary base 114 by pressing a button, the workpiece 200 is driven to turn over to a required proper position, and the worker performs weld quality inspection and repair welding work. If the flip exceeds 180 deg., the trigger 124 will impact the first travel switch 126 and the rotary drive member 116 will decelerate until the trigger 124 impacts the second travel switch 128 and the rotary drive member 116 will stop. If an abnormality occurs, the rotation driving part 116 continues to rotate, the limiting part 134 collides with the first limiting part 136, and the workpiece 200 stops overturning, so that safety is ensured.

After the welding and inspection work of the worker is finished, the worker presses the reset button, the rotation driving part 116 rotates reversely, the trigger 124 hits the third stroke switch 130, the rotation driving part 116 decelerates until the trigger 124 hits the fourth stroke switch 132, the rotation driving part 116 stops, and the positioning part 122 is driven by the positioning driving part 120 to extend into the positioning groove 118 of the rotating seat 114, so that the reset is completed. If an abnormality occurs, the rotation driving member 116 continues to rotate, the limiting member 134 may collide with the second limiting portion 138, and the workpiece 200 stops turning over, thereby ensuring safety. The worker takes the workpiece 200 and waits for the next workpiece 200 to be placed in position.

In an embodiment, the rotational driving unit 116 may be an ac speed reduction motor, the positioning unit 122 may be a retractable pin, the positioning driving unit 120 may be an air cylinder, the supporting base 148 may be a copper base, the first rolling element 144 and the second rolling element 146 may be rollers, the triggering unit 124 may be a plunger, the limiting unit 134 may be a plunger, and the motor 162 may be a servo motor.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary drive mechanism, comprising:

a first frame body;

the first actuating mechanism is rotatably arranged on the first frame body, is configured to clamp one side of a workpiece and drives the workpiece to rotate;

a second frame body;

the second actuator is arranged on the second frame body and is configured to clamp the other side of the workpiece, and the rotating shaft of the workpiece extends from the first actuator to the second actuator.

2. The rotary drive mechanism as recited in claim 1, wherein the first actuator comprises:

the rotating structure is rotatably arranged on the first frame body;

the first clamping structure is arranged on the rotating structure, is configured to be used for clamping one side of the workpiece, and drives the workpiece to rotate under the driving of the rotating structure.

3. The rotary drive mechanism as recited in claim 2, wherein the rotational structure comprises:

the rotating seat is rotatably connected with the frame body, and the first clamping structure is arranged on the rotating seat;

the rotary driving component is connected with the rotary seat and is configured to drive the rotary seat to rotate.

4. The rotary drive mechanism as recited in claim 3, wherein the first actuator further comprises:

the positioning groove is arranged on the rotating seat;

the positioning driving part is arranged on the first frame body;

and the positioning piece is connected with the positioning driving part and is configured to extend into or withdraw from the positioning groove under the driving of the positioning driving part.

5. The rotary drive mechanism as recited in claim 3, wherein the first actuator further comprises:

the travel switch is arranged on the first frame body;

the trigger piece is arranged on the rotating seat and can trigger the at least one travel switch under the driving of the rotating seat;

a controller electrically connected with the at least one travel switch and the rotary driving component and configured to control the rotary driving component to work according to the triggering result of the at least one travel switch.

6. The rotary drive mechanism as recited in claim 5, wherein the at least one travel switch comprises:

the first travel switch is arranged on the first frame body;

the second travel switches are arranged on the first frame body and are distributed at intervals with the first travel switches, and the trigger piece successively triggers the first travel switches and the second travel switches in the process that the rotating seat rotates along the first direction.

7. The rotary drive mechanism as recited in claim 5, wherein the at least one travel switch comprises:

the third travel switch is arranged on the first frame body;

and the fourth travel switch is arranged on the first frame body and is distributed at intervals with the third travel switch, and the trigger piece successively triggers the third travel switch and the fourth travel switch in the process that the rotating seat rotates along the second direction.

8. The rotary drive mechanism as recited in claim 5, wherein the first actuator further comprises:

the limiting piece is arranged on the rotating seat;

the first limiting part is arranged on the first frame body;

the second limiting part is arranged on the first frame body and is distributed at intervals with the first limiting part;

in the process that the rotating seat rotates along the first direction, the limiting part is abutted against the first limiting part after the trigger part triggers the at least one travel switch, and in the process that the rotating seat rotates along the second direction, the limiting part is abutted against the second limiting part after the trigger part triggers the at least one travel switch.

9. The rotary drive mechanism as recited in any one of claims 1 to 8, wherein the second actuator comprises:

the mounting seat is arranged on the second frame body;

and the second clamping structure is arranged on the mounting seat and is configured to clamp the other side of the workpiece.

10. The rotary drive mechanism as recited in claim 9, wherein the second actuator further comprises:

the first rolling body is arranged on the mounting seat;

and the second rolling body is arranged on the second clamping structure, and a clamping vacancy is formed between the second rolling body and the first rolling body.

11. The rotary drive mechanism as recited in any one of claims 5 to 8, wherein the first actuator further comprises:

a support base disposed on the rotary base and configured to support the workpiece;

a support structure coupled to the swivel and extending toward the second frame, the support structure configured to support the workpiece.

12. The rotary drive mechanism as recited in claim 11, further comprising:

the first proximity sensor is arranged on the supporting seat and is electrically connected with the controller;

the second proximity sensor is arranged on the mounting seat of the second actuating mechanism and is electrically connected with the controller;

the controller is further configured to: and controlling the rotary driving part to work according to the detection results of the first proximity sensor and the second proximity sensor.

13. The rotary drive mechanism as recited in any one of claims 1 to 8, further comprising:

the base is provided with a slide rail, and the first frame body and the second frame body are both connected with the slide rail in a sliding manner;

the driving structure is arranged on the base, connected with the first frame body and the second frame body and configured to drive the first frame body and the second frame body to move simultaneously along opposite directions.

14. The rotary drive mechanism as recited in claim 13, wherein the drive structure comprises:

a motor;

the first end of the commutator is connected with an output shaft of the motor;

the first coupler is connected with the second end of the commutator;

the first lead screw is connected with the first coupler and the first frame body;

the second coupler is connected with the third end of the commutator;

and the second lead screw is connected with the second coupling and the second frame body.