Feeding, screwing and riveting equipment

Abstract

The application provides a feeding and screwing and riveting device, which comprises a multi-conveying-line feeding device, a double-station assembling device, a conveying transition line and a robot, the multi-conveying-line feeding device is arranged along an X-axis direction, the multi-conveying-line feeding device and the double-station assembling device are arranged side by side along a Y-axis direction, the conveying transition line is arranged along the Y-axis direction and is located at a discharging position of the multi-conveying-line feeding device, and the robot is located in an area surrounded by the multi-conveying-line feeding device and the double-station assembling device. The application can realize continuous feeding of end covers, gaskets and nuts in the same station and continuously pre-assemble the workpieces on a rotating shaft with a core. Meanwhile, the rotating shaft with the pre-assembled end cover, gasket and nut can be further screwed and riveted to complete the assembly and fixation of the workpieces, thereby significantly improving the assembly efficiency of the rotating shaft.

Description

Technical Field

[0001] This invention relates to the field of rotor assembly technology, and more particularly to a device suitable for assembling end caps, gaskets and nuts. Background Technology

[0002] An electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque to power electrical appliances or various mechanical equipment. An electric motor generally consists of a stator, a rotor, and other accessories. When the motor is working, the stator generates a rotating magnetic field, and the rotor is placed in this rotating magnetic field. When the coils wound around the rotor are energized, they acquire a rotational torque under the influence of the rotating magnetic field, thereby driving the rotor to rotate.

[0003] To facilitate rotor pivoting and coil winding, the rotor includes a shaft, iron cores, and other structures. The shaft serves as the rotor's pivot point. Multiple iron cores are stacked sequentially on the shaft, serving as the winding carrier for the coils. To maintain the iron cores' stability, washers and end caps are fitted onto the shaft, secured by a nut. Therefore, it is necessary to propose further solutions for the continuous feeding and assembly of the end caps, washers, and nuts. Summary of the Invention

[0004] The present invention aims to provide a feeding, tightening and riveting device to overcome the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0006] A feeding, tightening, and riveting device includes: a multi-conveyor feeding device, a dual-station assembly device, a conveyor transition line, and a robot;

[0007] The multi-conveyor feeding device is arranged along the X-axis; the multi-conveyor feeding device and the dual-station assembly device are arranged side by side along the Y-axis; the conveyor transition line extends along the Y-axis and is located at the unloading position of the multi-conveyor feeding device; the robot is located in the area enclosed by the multi-conveyor feeding device and the dual-station assembly device.

[0008] The multi-conveyor feeding device includes: an end cap feeding conveyor, a gasket feeding conveyor, a nut feeding conveyor, and a conveying mechanism arranged side by side along the X-axis; the conveying mechanism is located downstream of each conveyor and pre-assembles the workpieces provided by each conveyor onto the rotating shaft provided by the conveyor transition line in sequence;

[0009] The double-station assembling device comprises a screwing mechanism and a riveting mechanism; the screwing mechanism and the riveting mechanism are arranged in the turnover range covered by the robot, the robot turns the shaft pre-assembled with the nut by the conveying transition line to the screwing mechanism, and then turns the shaft after screwing the nut by the screwing mechanism to the riveting mechanism.

[0010] As an improvement of the loading, screwing and riveting equipment, the end cover loading conveying line comprises a first conveying line body and a first carrier plate, the first carrier plate is driven by the first conveying line body to reciprocate along the X-axis.

[0011] The gasket loading conveying line comprises a second conveying line body and a second carrier plate, the second carrier plate is driven by the second conveying line body to reciprocate along the X-axis.

[0012] The nut loading conveying line comprises a third conveying line body and a plurality of jigs, the plurality of jigs are arranged on the third conveying line body at intervals and are driven by the third conveying line body to reciprocate along the X-axis.

[0013] As an improvement of the loading, screwing and riveting equipment, the first conveying line body is a first X-axis linear motor, the first carrier plate is connected to a sliding block driven by the first X-axis linear motor, and at least one set of first vertical columns suitable for stacking and sleeving a plurality of end covers are arranged on the first carrier plate.

[0014] The second conveying line body is a second X-axis linear motor, the second carrier plate is connected to a sliding block driven by the second X-axis linear motor, and at least one set of second vertical columns suitable for stacking and sleeving a plurality of gaskets are arranged on the second carrier plate.

[0015] The third conveying line body comprises a driving unit and a transmission unit; the transmission unit comprises a chain and a plurality of sprockets, the chain is sleeved on the plurality of sprockets, the driving unit is in transmission connection with one sprocket, and a plurality of jigs are arranged on the chain at intervals and move in a circulating manner with the chain.

[0016] As an improvement of the loading, screwing and riveting equipment, the plurality of sprockets are arranged at the upstream end and the downstream end in the conveying direction respectively, two sets of sprockets arranged in an up-down manner are arranged at any end, the sprockets are linked through the chain; the driving unit comprises a driving motor and a divider; the driving motor is in transmission connection with one sprocket through the divider.

[0017] As the improvement of the present application, the transmission unit is provided in two groups, the sprockets of the two groups are arranged side by side, and any two sprockets are connected by a transmission shaft; the chain of the two groups is connected with a plurality of jigs, each of which is provided with two grooves for placing nuts.

[0018] As the improvement of the present application, the conveying mechanism comprises a first conveying unit and a second conveying unit; the first conveying unit performs three-dimensional movement along XYZ axes and transfers the end covers conveyed by the end cover feeding line and the gaskets conveyed by the gasket feeding line; the second conveying unit is integrated with the first conveying unit and transfers the nuts conveyed by the nut feeding line.

[0019] As the improvement of the present application, the first conveying unit comprises a conveying clamp, a third X-axis linear motor, a Y-axis linear motor, a first Z-axis electric cylinder and a gantry frame.

[0020] The conveying clamp is connected with the first Z-axis electric cylinder and driven by the first Z-axis electric cylinder to move along the Z-axis.

[0021] The conveying clamp and the first Z-axis electric cylinder are connected with the third X-axis linear motor and driven by the third X-axis linear motor to move along the X-axis.

[0022] The gantry frame is a rectangular frame, the Y-axis linear motor is arranged on the side frame of the rectangular frame along the Y-axis, and the conveying clamp, the first Z-axis electric cylinder and the third X-axis linear motor are connected with the Y-axis linear motor and driven by the Y-axis linear motor to move along the Y-axis.

[0023] The conveying clamp comprises a clamp cylinder and a pressing unit; the pressing unit comprises an upper pressing plate and a lower pressing plate, and a buffer spring is arranged between the upper pressing plate and the lower pressing plate; the clamp cylinder is connected below the pressing unit, and the pressing unit is driven by the first Z-axis electric cylinder to press the workpiece clamped and released by the clamp cylinder.

[0024] The second conveying unit comprises a base plate, a material taking suction cup, a fourth X-axis linear motor and a second Z-axis electric cylinder.

[0025] The material taking suction cup is connected with the second Z-axis electric cylinder and driven by the second Z-axis electric cylinder to move along the Z-axis.

[0026] The material taking suction cup and the second Z-axis electric cylinder are connected with the fourth X-axis linear motor and driven by the fourth X-axis linear motor to move along the X-axis.

[0027] The substrate is arranged on the frame arranged along the X direction and located on one side of the Y-axis linear motor, and the fourth X-axis linear motor is arranged on the substrate.

[0028] As an improvement of the feeding, tightening and riveting device, the tightening mechanism comprises a screw head, a fixed tool and a Z-axis motor; the screw head is in transmission connection with the Z-axis motor, can pivot around its own axis and can be driven by the Z-axis motor to move up and down; the fixed tool is located below the screw head.

[0029] The riveting mechanism comprises a riveting head, a rotating tool and a pressing cylinder; the riveting head forms a riveting space inside; the inner side wall of the riveting head is provided with a riveting protrusion; the riveting head is in transmission connection with the pressing cylinder and can move up and down under the driving of the pressing cylinder; the rotating tool is located below the riveting head.

[0030] As an improvement of the feeding, tightening and riveting device, the fixed tool comprises a first fixed seat, a pre-pressing cylinder and a first X-axis motor.

[0031] The first fixed seat is in transmission connection with the sliding block of the first X-axis motor and can reciprocate between the feeding position and the tightening position under the driving of the first X-axis motor; the pre-pressing cylinder is symmetrically arranged on both sides of the tightening position and can clamp and fix the first fixed seat when it moves to the tightening position.

[0032] As an improvement of the feeding, tightening and riveting device, the tightening mechanism further comprises a dust collection unit, which is located at the discharging position of the tightening mechanism.

[0033] The dust collection unit comprises a dust collection port, a Z-axis cylinder and a rotating motor; the dust collection port is connected to a bracket, one end of the bracket is in transmission connection with the Z-axis cylinder, and the Z-axis cylinder drives the dust collection port to move up and down; the rotating motor is in transmission connection with the Z-axis cylinder and can drive the dust collection port and the Z-axis cylinder to pivot as a whole.

[0034] As an improvement of the feeding, tightening and riveting device, the rotating tool comprises a second fixed seat, a base, a motor and a second X-axis motor.

[0035] The second fixed seat is detachably arranged on the base, the second fixed seat and the base are in transmission connection with the motor as a whole and can pivot within a preset angle range under the driving of the motor; the second fixed seat, the base and the motor are in transmission connection with the sliding block of the second X-axis motor as a whole and can reciprocate between the feeding position and the riveting position under the driving of the second X-axis motor.

[0036] Compared with existing technologies, the advantages of this invention are: by setting up multiple conveyor lines, this invention enables continuous feeding of end caps, gaskets, and nuts at the same station, thereby significantly improving the assembly efficiency of the rotor. Simultaneously, this invention also includes a conveying mechanism with dual conveying units, which can separately handle the feeding of end caps, gaskets, and nuts, further improving the feeding efficiency of each workpiece. Furthermore, the integrated conveying mechanism allows its travel stroke to cover multiple conveyor lines while occupying a relatively small space.

[0037] Furthermore, the tightening and riveting mechanisms are arranged side by side, enabling continuous tightening and riveting of nuts with the assistance of a robot. The tightening mechanism also includes a dust extraction unit that removes debris generated during tightening, ensuring the cleanliness of the product surface. In addition, the tightening and riveting mechanisms are each mounted on their respective worktables, with their X-axis motors positioned below the worktables. This design saves space above the worktables and facilitates the rational arrangement of other structural components. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a perspective view of an embodiment of the feeding, tightening, and riveting equipment of the present invention;

[0040] Figure 2 for Figure 1 Top view of the feeding device on the multi-conveyor line;

[0041] Figure 3 for Figure 1 A perspective view of the feeding device on a multi-conveyor line;

[0042] Figure 4 for Figure 3 Enlarged 3D schematic diagram of the nut feeding conveyor line;

[0043] Figure 5 for Figure 3 A three-dimensional enlarged schematic diagram of the conveying mechanism.

[0044] Figure 6 for Figure 5 The front view of the conveying mechanism shown;

[0045] Figure 7This is a three-dimensional enlarged schematic diagram of the conveying mechanism in this embodiment;

[0046] Figure 8 for Figure 1 A three-dimensional schematic diagram of the dual-station assembly device and robot;

[0047] Figure 9 This is a three-dimensional enlarged schematic diagram of the tightening mechanism in this embodiment;

[0048] Figure 10 This is a side view of the tightening mechanism in this embodiment;

[0049] Figure 11 This is a three-dimensional enlarged schematic diagram of the riveting mechanism in this embodiment;

[0050] Figure 12 This is a side view of the riveting mechanism in this embodiment. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] One embodiment of the present invention provides a feeding, tightening, and riveting device, which can continuously feed end caps, gaskets, and nuts at the same station and continuously pre-assemble each workpiece onto a rotating shaft fitted with an iron core. Simultaneously, for the rotating shaft pre-assembled with end caps, gaskets, and nuts, the nuts can be further tightened and riveted to complete the assembly and fixation of each workpiece, thereby significantly improving the rotor's assembly efficiency.

[0053] like Figure 1 As shown, the feeding, tightening and riveting equipment in this embodiment includes: a multi-conveyor feeding device 100, a dual-station assembly device 200, a conveyor transition line 300 and a robot 400.

[0054] The multi-conveyor feeding device 100 is used to realize the continuous feeding and pre-assembly of end caps, gaskets and nuts. The multi-conveyor feeding device 100 is arranged along the X-axis direction.

[0055] The conveyor transition line 300 is used to provide a rotating shaft for pre-assembly with end caps, gaskets and nuts. The conveyor transition line 300 extends along the Y-axis and is located at the unloading position of the multi-conveyor loading device to receive each workpiece provided by the multi-conveyor loading device 100.

[0056] The double-station assembling device 200 is used for receiving the rotating shafts pre-assembled with end caps, gaskets and nuts conveyed by the conveying transition line 300, and further realizing the tightening and riveting of the pre-assembled nuts, thereby completing the assembling and fixing of the workpieces. The double-station assembling device and the multi-conveying line feeding device are arranged side by side along the Y axis.

[0057] The robot 400 is used for circulating the rotating shafts assembled with end caps, gaskets and nuts, and is located in the area surrounded by the multi-conveying line feeding device 100 and the double-station assembling device 200.

[0058] As shown in Figure 2 , the multi-conveying line feeding device 100 comprises the end cap feeding conveying line 10, the gasket feeding conveying line 20, the nut feeding conveying line 30 and the carrying mechanism 40 arranged side by side along the X axis. In this way, by arranging the above conveying lines, the end caps, gaskets and nuts for assembling the rotating shafts can be provided in sequence according to the assembling order. According to the requirement, any one of the conveying lines can be arranged as multiple lines side by side.

[0059] As shown in Figure 3 , the end cap feeding conveying line 10 comprises a first conveying line body 11 and a first carrier plate 12. The first carrier plate 12 is used for carrying the end caps to be fed. Thus, the end caps can move along the X axis from the feeding position to the discharging position under the driving of the first conveying line body 11 along with the first carrier plate 12. In an embodiment, the first conveying line body 11 is a first X-axis linear motor, and the first carrier plate 12 is connected to the slider driven by the first X-axis linear motor.

[0060] Since the end cap needs to be assembled on the rotating shaft of the rotating shaft, a through hole is formed therebetween. In order to facilitate the first carrier plate 12 to carry the end caps for feeding, at least one set of first vertical columns 121 adapted for the stacking and sleeving of multiple end caps is further arranged on the first carrier plate 12. When the first vertical columns 121 are arranged as multiple sets, the multiple sets of first vertical columns 121 are arranged at intervals along the X axis. In this way, multiple sets of stacked end caps can be provided for feeding at one time.

[0061] The gasket feeding conveying line 20 comprises a second conveying line body 21 and a second carrier plate 22, and the second carrier plate 22 is driven by the second conveying line body 21 to reciprocate along the X axis. Thus, the gaskets can move along the X axis from the feeding position to the discharging position under the driving of the second conveying line body 21 along with the second carrier plate 22. In an embodiment, the second conveying line body 21 is a second X-axis linear motor, and the second carrier plate 22 is connected to the slider driven by the second X-axis linear motor.

[0062] Since the gaskets need to be assembled on the rotating shaft of the rotor, a through hole is formed in the middle. In order to facilitate the loading of the gaskets by the second carrier plate 22, at least one set of second vertical columns 221 suitable for stacking and sleeving a plurality of gaskets is also provided on the second carrier plate 22. When the second vertical columns 221 are provided in multiple groups, the multiple groups of second vertical columns 221 are arranged at intervals along the X-axis direction. In this way, multiple groups of stacked gaskets can be provided at one time.

[0063] As shown in Figure 4 The nut loading and conveying line 30 includes a third conveying line body 31 and a plurality of jigs 32. The plurality of jigs 32 are arranged at intervals on the third conveying line body 31 and are driven by the third conveying line body 31 to reciprocate along the X-axis.

[0064] Specifically, the third conveying line body 31 includes a driving unit 33 and a transmission unit 34.

[0065] The driving unit 33 is used to provide the power required for the operation of the third conveying line body 31 of the present embodiment. The driving unit 33 includes a driving motor 331 and a divider 332. The driving motor 331 drives the transmission unit 34 to work through the divider 332. In this way, by providing the divider 332, the driving motor 331 can drive the transmission unit 34 to move according to the required unit distance.

[0066] The transmission unit 34 includes a chain 341 and a plurality of sprockets 342. The chain 341 is sleeved on the plurality of sprockets 342. The driving unit 33 is in transmission connection with one sprocket 342. The plurality of jigs 32 are arranged at intervals on the chain 341 and move in a circulating manner with the chain 341. In this way, the chain 341 provided with the jigs 32 can realize the fixation of the nuts. In order to facilitate the fixation of the nuts, the jigs 32 are provided with grooves suitable for placing the nuts.

[0067] In one embodiment, the plurality of sprockets 342 are arranged at the upstream end and the downstream end according to the conveying direction. Two groups of sprockets 342 arranged in an up-down manner are arranged at any end. The sprockets 342 are linked through the chain 341. At this time, the driving motor 331 is in transmission connection with one sprocket 342 through the divider 332, the transmission wheel and the transmission belt.

[0068] In this way, when the driving motor 331 works, it can drive the chain 341 to move in a circulating manner through the sprocket 342 in transmission connection therewith. In one embodiment, the driving motor 331 is arranged vertically. It is in transmission connection with the sprocket 342 through the divider 332 coaxially arranged with the sprocket 342. Thus, the driving motor 331 can drive the chain 341 to move according to the required unit distance, so as to realize the accurate feeding of the nuts.

[0069] In order to facilitate the connection between the chain 341 and the jig 32, the transmission unit 34 is provided in two groups, and the sprockets 342 of the two groups of transmission units 34 are arranged side by side on the left and right, and any two oppositely arranged sprockets 342 are connected through a transmission shaft. At the same time, the nut feeding conveying line 30 further comprises two oppositely arranged vertical plates 35, and each transmission shaft is pivotally connected between the two vertical plates 35.

[0070] At this time, a plurality of jigs 32 are connected to the chains 341 of the two groups of transmission units 34, so that each jig 32 moves with the chain 341. In order to convey a plurality of nuts when the chain 341 moves a unit distance, two parallel grooves are formed on any jig 32.

[0071] The conveying mechanism 40 is located at the downstream end of each conveying line, and has two conveying units, which can respectively circulate the end covers, gaskets and nuts, further improving the feeding efficiency of each workpiece.

[0072] As shown in Figure 5 , 6 , the conveying mechanism 40 comprises a first conveying unit 41 and a second conveying unit 42.

[0073] The first conveying unit 41 moves in three dimensions along the XYZ axis, and circulates the end covers conveyed by the end cover feeding conveying line 10 and the gaskets conveyed by the gasket feeding conveying line 20. The first conveying unit 41 comprises a conveying gripper 411, a third X-axis linear motor 412, a Y-axis linear motor 413, a first Z-axis electric cylinder 414 and a gantry 415.

[0074] In order to realize three-dimensional movement, the conveying gripper 411 is connected with the first Z-axis electric cylinder 414 and driven to move along the Z-axis by the first Z-axis electric cylinder 414. In this way, with the orientation shown in Figure 4 as a reference, the lifting movement of the conveying gripper 411 can be realized.

[0075] The whole formed by the conveying gripper 411 and the first Z-axis electric cylinder 414 is connected with the third X-axis linear motor 412 and driven to move along the X-axis by the third X-axis linear motor 412. In order to facilitate the overall movement of the conveying gripper 411 and the first Z-axis electric cylinder 414, two X-axis sliding rails are further arranged on the motor seat of the third X-axis linear motor 412. In this way, with the orientation shown in Figure 4 as a reference, the forward and backward movement of the conveying gripper 411 can be realized.

[0076] The top of the gantry 415 is a rectangular frame, and the Y-axis linear motor 413 is arranged on the side frame arranged along the Y direction of the rectangular frame. The carrying clamp jaw 411, the first Z-axis electric cylinder 414 and the third X-axis linear motor 412 are connected with the Y-axis linear motor 413 and are driven to move along the Y axis by the Y-axis linear motor 413. In order to facilitate the movement of the carrying clamp jaw 411, the first Z-axis electric cylinder 414 and the third X-axis linear motor 412, Y-axis sliding rails are arranged on the two side frames arranged along the Y direction of the rectangular frame. Figure 4 As shown in the orientation, the left and right movements of the carrying clamp jaw 411 can be realized.

[0077] As shown in the orientation, the left and right movements of the carrying clamp jaw 411 can be realized. Figure 7 The carrying clamp jaw 411 includes a clamp jaw cylinder 416 and a pressing unit 417. The pressing unit 417 includes an upper pressing plate 418 and a lower pressing plate 419, and a buffer spring 420 is arranged between the upper pressing plate 418 and the lower pressing plate 419. The clamp jaw cylinder 416 is connected below the pressing unit 417. The pressing unit 417 is driven by the first Z-axis electric cylinder 414 to press the workpiece clamped and released by the clamp jaw cylinder 416. In this way, the clamp jaw cylinder 416 can first move above the end cover feeding and conveying line 10, clamp the end cover and further drive it to circulate and unload; and then continue to move above the gasket feeding and conveying line 20, clamp the gasket and further drive it to circulate and unload.

[0078] The second carrying unit 42 is integrated on the first carrying unit 41 and circulates and unloads the nuts conveyed by the nut feeding and conveying line 30. In this way, by integrating the first carrying unit 41 and the second carrying unit 42, the movement stroke can cover multiple conveying lines while occupying less space.

[0079] The second carrying unit 42 includes a base plate 421, a material taking suction cup 422, a fourth X-axis linear motor 423 and a second Z-axis electric cylinder 424. In order to realize integrated arrangement, the base plate 421 is arranged on the side frame arranged along the X direction of the rectangular frame and located on one side of the Y-axis linear motor 413, the fourth X-axis linear motor 423 is arranged on the base plate 421, and a sliding groove is formed on the base plate 421 to avoid the second Z-axis electric cylinder 424.

[0080] The material taking suction cup 422 is connected with the second Z-axis electric cylinder 424 and is driven to move along the Z axis by the second Z-axis electric cylinder 424. In this way, as shown in the orientation, the lifting movement of the material taking suction cup 422 can be realized. Figure 4

[0081] ​The overall structure of the taking suction cup 422 and the second Z-axis electric cylinder 424 is connected with the fourth X-axis linear motor 423 and is driven to move along the X-axis. In order to facilitate the overall movement of the taking suction cup 422 and the second Z-axis electric cylinder 424, two X-axis sliding rails are arranged on the base plate 421 where the fourth X-axis linear motor 423 is located. In this way, the front and back movement of the taking suction cup 422 can be realized by referring to the orientation shown in the figure. In this way, the taking suction cup 422 can move above the nut feeding and conveying line 30, suck the nut and further drive the nut to turn over and be discharged. Figure 4 The front and back movement of the taking suction cup 422 can be realized by referring to the orientation shown in the figure. In this way, the taking suction cup 422 can move above the nut feeding and conveying line 30, suck the nut and further drive the nut to turn over and be discharged.

[0082] The conveying transition line 300 is used to provide a shaft, and the end cover, gasket and nut provided by the multi-conveying line feeding device 100 are sequentially preassembled on the provided shaft under the driving of the carrying mechanism 40. The conveying transition line 300 can also adopt a conveying structure of a chain wheel and a chain, and its structure is similar to that of the nut feeding and conveying line 30, except that the jig moving synchronously with the chain is arranged to be a jig suitable for fixing the shaft. Therefore, the structure of the conveying transition line 300 will not be repeatedly introduced.

[0083] As shown in Figure 8 , the double-station assembling device 200 includes a tightening mechanism 210 and a riveting mechanism 230.

[0084] The tightening mechanism 210 and the riveting mechanism 230 are arranged side by side in the turnover range covered by the robot 400, and the robot 400 turns the workpiece from the tightening mechanism 210 to the riveting mechanism 230. In this way, under the assistance of the robot 400, the tightening mechanism 210 and the riveting mechanism 230 can realize the continuous tightening and riveting of the nut, thereby significantly improving the assembly efficiency of the rotor. In an embodiment, the robot 400 can be a six-axis industrial robot.

[0085] As shown in Figure 9 , 10 , the tightening mechanism 210 includes a screwdriver head 211, a fixed tool 212 and a Z-axis motor 213.

[0086] The screwdriver head 211 has a cavity matched with the nut, the screwdriver head 211 is in driving connection with the Z-axis motor 213, the screwdriver head 211 can pivot around its own axis and can be driven by the Z-axis motor 213 to move up and down.

[0087] In this way, when the Z-axis motor 213 drives the screwdriver head 211 to descend to the working position, the screwdriver head 211 can tighten the nut preassembled on the shaft through its pivoting movement. In an embodiment, the screwdriver head 211 and its axial driving part form a screw gun, and the screw gun is integrally driven by the Z-axis motor 213 to move up and down.

[0088] The fixing tool 212 is used for fixing the rotating shaft to be tightened and rotating it to the lower side of the screwing head 211. Specifically, the fixing tool 212 is arranged below the screwing head 211 and comprises a first fixing base 214, a pre-pressing cylinder 215 and a first X-axis motor 216.

[0089] The first fixing base 214 comprises a fixing base body 217 and a clamp 218 arranged on the fixing base body 217, and the clamp 218 is provided with a fixing groove suitable for clamping the workpiece. In this way, the workpiece rotated by the robot 400 can be fixed axially and radially through the fixing groove on the fixing base body 217. The first fixing base 214 is in transmission connection with the sliding block of the first X-axis motor 216 and is driven by the first X-axis motor 216 to reciprocate between the feeding position and the tightening position. In this way, the workpiece on the first fixing base 214 can be rotated to the lower side of the screwing head 211 through the first X-axis motor 216.

[0090] The pre-pressing cylinder 215 is used for keeping the first fixing base 214 stable during tightening. To achieve the above purpose, the pre-pressing cylinder 215 is symmetrically arranged on both sides of the tightening position and can push the clamping blocks connected thereto to clamp and fix the two sides of the first fixing base 214 when the first fixing base 214 moves to the tightening position.

[0091] The fixing tool 212 is arranged on a workbench 219, the first X-axis motor 216 is arranged below the workbench 219, the sliding block of the first X-axis motor 216 extends from the workbench 219 and is in transmission connection with the first fixing base 214, and the workbench 219 is further provided with a sliding rail suitable for the movement of the first fixing base 214. In this way, by arranging the first X-axis motor 216 below the workbench 219, the space above the workbench 219 can be saved, and thus the rational arrangement of the remaining structures is facilitated.

[0092] In addition, the tightening mechanism 210 further comprises a dust collection unit 220 arranged at the discharging position of the tightening mechanism 210. In this way, the dust collection unit 220 can suck away the waste generated during tightening, thereby facilitating the guarantee of the surface cleanliness of the product. Specifically, the dust collection unit 220 comprises a dust collection port 221, a Z-axis cylinder 222 and a rotating motor 223.

[0093] The suction port 221 is connected to an external vacuuming device. Simultaneously, the suction port 221 is connected to a bracket, one end of which is driven by a Z-axis cylinder 222, which drives the suction port 221 to move up and down. A rotary motor 223 is also driven by the Z-axis cylinder 222, enabling the suction port 221 and the Z-axis cylinder 222 to pivot as a whole. Thus, when the workpiece is being loaded, the suction port 221 is positioned in a position that does not interfere with it. When the workpiece is being unloaded by tightening the nut, the suction port 221, driven by the rotary motor 223, moves to above the workpiece and sucks away debris, dust, and other contaminants from its surface.

[0094] like Figure 11 , 12 As shown, the riveting mechanism 230 includes: a riveting head 231, a rotating tool 232, and a pressure cylinder 233.

[0095] The riveting head 231 has a riveting space inside, and riveting protrusions are provided on its inner sidewall. The riveting head 231 is connected to the pressure cylinder 233 and can move up and down under the drive of the pressure cylinder 233. Thus, when the pressure cylinder 233 drives the riveting head 231 to the working position, the riveting head 231 acts on the nut through the riveting protrusions on its inner sidewall to perform riveting processing.

[0096] The rotating fixture 232 is used to apply a certain torque to the workpiece during riveting, thereby further tightening the nut. Specifically, the rotating fixture 232 is located below the riveting head 231 and includes: a second fixed seat 234, a base 235, a motor 236, and a second X-axis motor 237.

[0097] The second fixed base 234 includes a fixed base body 238 and a clamp 239 disposed on the fixed base body 238. The clamp 239 is provided with a fixing groove suitable for clamping the workpiece. In this way, the workpiece that the robot 400 has rotated through can be fixed axially and radially through the fixing groove on the fixed base body 238.

[0098] The second fixed seat 234 is detachably mounted on the base 235. This facilitates the replacement of tooling to match different workpiece models. The second fixed seat 234 and the base 235 are integrally connected to the motor 236 for transmission, and are driven by the motor 236 to pivot within a preset angle range. Thus, by driving the second fixed seat 234 to rotate, the motor 236 can provide corresponding torque to the workpiece to assist in further tightening.

[0099] The second fixing base 234, the base 235 and the motor 236 are integrally connected with the slider of the second X-axis motor 237 in transmission and are driven by the second X-axis motor 237 to reciprocate between the feeding position and the riveting position. In this way, the workpiece on the second fixing base 234 can be driven by the second X-axis motor 237 to rotate to the lower side of the screw head 211.

[0100] The riveting mechanism 230 is located on a workbench 240, the second X-axis motor 237 is located below the workbench 240, the slider of the second X-axis motor 237 extends from the workbench 240 and is connected with the base 235 in transmission, and the workbench 240 is further provided with a sliding rail suitable for the movement of the base 235. In this way, by placing the second X-axis motor 237 below the workbench 240, the space above the workbench 240 can be saved, thereby facilitating the reasonable arrangement of the remaining structures.

[0101] In summary, the present application can realize the continuous feeding of the end cover, the gasket and the nut at the same station by arranging a plurality of conveying lines, thereby significantly improving the assembly efficiency of the rotor. Meanwhile, the present application further arranges a carrying mechanism with double carrying units, which can respectively rotate the end cover, the gasket and the nut for discharging, thereby further improving the feeding efficiency of the workpieces. The carrying mechanism is integrally arranged, which can cover a plurality of conveying lines in the movement stroke while occupying a smaller space.

[0102] Further, the tightening mechanism and the riveting mechanism are arranged side by side, and under the assistance of the robot, the continuous tightening and riveting of the nut can be realized in sequence. The tightening mechanism further has a dust suction unit which can suck away the waste generated during the tightening, thereby ensuring the surface cleanliness of the product. In addition, the tightening mechanism and the riveting mechanism are respectively arranged on respective workbenches, and the X-axis motors of the two are placed below the workbenches, thereby being beneficial to saving the space above the workbenches and facilitating the reasonable arrangement of the remaining structures.

[0103] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of the equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0104] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A feeding and tightening riveting apparatus characterized by comprising: The feeding and screwing and riveting equipment comprises a multi-conveying line feeding device, a double-station assembling device, a conveying transition line and a robot; The multi-conveying line feeding device is arranged along the X-axis direction; the multi-conveying line feeding device and the double-station assembling device are arranged side by side along the Y-axis; the conveying transition line is arranged along the Y-axis and is located at a discharging position of the multi-conveying line feeding device; and the robot is located in an area surrounded by the multi-conveying line feeding device and the double-station assembling device; The multi-conveying line feeding device comprises end cover conveying lines, gasket conveying lines, nut conveying lines and a carrying mechanism arranged side by side along the X-axis; the carrying mechanism is located at a downstream position of each conveying line and sequentially pre-assembles workpieces provided by each conveying line on a rotating shaft provided by the conveying transition line; The double-station assembling device comprises a screwing mechanism and a riveting mechanism; the screwing mechanism and the riveting mechanism are arranged within a turnover range covered by the robot; the robot turns over the rotating shaft pre-assembled with the nut from the conveying transition line to the screwing mechanism, and then turns over the rotating shaft after screwing the nut from the screwing mechanism to the riveting mechanism; The carrying mechanism comprises a first carrying unit and a second carrying unit; the first carrying unit performs three-dimensional movement along the XYZ axes and turns over end covers conveyed by the end cover conveying lines and gaskets conveyed by the gasket conveying lines; and the second carrying unit is integrated on the first carrying unit and turns over nuts conveyed by the nut conveying lines; The first carrying unit comprises a carrying clamp, a third X-axis linear motor, a Y-axis linear motor, a first Z-axis electric cylinder and a gantry; The carrying clamp is connected with the first Z-axis electric cylinder and is driven by the first Z-axis electric cylinder to move along the Z-axis; The carrying clamp and the first Z-axis electric cylinder are connected with the third X-axis linear motor and are driven by the third X-axis linear motor to move along the X-axis; The gantry has a rectangular frame at the top, the Y-axis linear motor is arranged on a side frame arranged along the Y-axis of the rectangular frame, and the carrying clamp, the first Z-axis electric cylinder and the third X-axis linear motor are connected with the Y-axis linear motor and are driven by the Y-axis linear motor to move along the Y-axis; The carrying clamp comprises a clamp cylinder and a pressing unit; the pressing unit comprises an upper pressing plate and a lower pressing plate, and a buffer spring is arranged between the upper pressing plate and the lower pressing plate; the clamp cylinder is connected below the pressing unit, and the pressing unit is driven by the first Z-axis electric cylinder to press down the workpiece clamped and released by the clamp cylinder; The second carrying unit comprises a base plate, a material taking suction cup, a fourth X-axis linear motor and a second Z-axis electric cylinder; The material taking suction cup is connected with the second Z-axis electric cylinder and is driven by the second Z-axis electric cylinder to move along the Z-axis; The material taking suction cup and the second Z-axis electric cylinder are connected with the fourth X-axis linear motor and are driven by the fourth X-axis linear motor to move along the X-axis; and The substrate is arranged on the frame arranged along the X direction and located on one side of the Y-axis linear motor, and the fourth X-axis linear motor is arranged on the substrate.

2. The loading and tightening riveting apparatus according to claim 1, characterized by, The end cover feeding and conveying line comprises a first conveying line body and a first carrier plate, and the first carrier plate is driven by the first conveying line body to reciprocate along the X axis. The gasket feeding and conveying line comprises a second conveying line body and a second carrier plate, and the second carrier plate is driven by the second conveying line body to reciprocate along the X axis. The nut feeding and conveying line comprises a third conveying line body and a plurality of jigs, the plurality of jigs are arranged on the third conveying line body at intervals and are driven by the third conveying line body to reciprocate along the X axis.

3. The loading and tightening riveting apparatus according to claim 2, wherein The first conveying line body is a first X-axis linear motor, the first carrier plate is connected to a sliding block driven by the first X-axis linear motor, and at least one set of first vertical columns suitable for stacking and sleeving a plurality of end covers are arranged on the first carrier plate. The second conveying line body is a second X-axis linear motor, the second carrier plate is connected to a sliding block driven by the second X-axis linear motor, and at least one set of second vertical columns suitable for stacking and sleeving a plurality of gaskets are arranged on the second carrier plate. The third conveying line body comprises a driving unit and a transmission unit, the transmission unit comprises a chain and a plurality of sprockets, the chain is sleeved on the plurality of sprockets, the driving unit is in transmission connection with one sprocket, and a plurality of jigs are arranged on the chain at intervals and move cyclically with the chain.

4. The loading and tightening riveting apparatus according to claim 3, wherein The plurality of sprockets are arranged at the upstream end and the downstream end respectively along the conveying direction, two sets of sprockets arranged in an up-down manner are arranged at any one end, the sprockets are linked through the chain, the driving unit comprises a driving motor and a divider, and the driving motor is in transmission connection with one sprocket through the divider.

5. The loading and tightening riveting apparatus according to claim 3, wherein The transmission unit is arranged in two sets, the sprockets of the two sets of transmission units are arranged side by side, any two sprockets arranged oppositely are linked through a transmission shaft, the chain of the two sets of transmission units is connected with a plurality of jigs, two material grooves arranged side by side and suitable for placing nuts are arranged on any jig, and each jig moves cyclically with the chain.

6. The loading and tightening riveting apparatus according to claim 1, wherein The tightening mechanism comprises a screwdriver head, a fixing tool and a Z-axis motor, the screwdriver head is in transmission connection with the Z-axis motor, the screwdriver head can pivot around its axis and can be driven by the Z-axis motor to move up and down, and the fixing tool is located below the screwdriver head. The riveting mechanism comprises a riveting head, a rotating tool and a pressure cylinder, a riveting space is formed in the riveting head, a riveting protrusion is arranged on the inner side wall of the riveting head, the riveting head is in transmission connection with the pressure cylinder and can move up and down under the driving of the pressure cylinder, and the rotating tool is located below the riveting head.

7. The loading and tightening riveting apparatus according to claim 6, wherein The fixing tool comprises a first fixing seat, a pre-pressing cylinder and a first X-axis motor. The first fixed seat is in transmission connection with the slider of the first X-axis motor and is driven by the first X-axis motor to reciprocate between a feeding position and a tightening position; the pre-pressing cylinders are symmetrically arranged on both sides of the tightening position and can clamp and fix the first fixed seat when the first fixed seat moves to the tightening position.

8. The loading and tightening riveting apparatus according to claim 6, wherein The tightening mechanism further comprises a dust suction unit located at a discharging position of the tightening mechanism; The dust suction unit comprises a dust suction port, a Z-axis cylinder and a rotary motor; the dust suction port is connected to a support, one end of the support is in transmission connection with the Z-axis cylinder, and the Z-axis cylinder drives the dust suction port to move up and down; the rotary motor is in transmission connection with the Z-axis cylinder and can drive the dust suction port and the Z-axis cylinder to pivot as a whole.

9. The loading and tightening riveting apparatus according to claim 6, wherein The rotary tool comprises a second fixed seat, a base, a motor and a second X-axis motor; The second fixed seat is detachably arranged on the base, the second fixed seat and the base are in integral transmission connection with the motor and are driven by the motor to pivot within a preset angle range; the second fixed seat, the base, the motor are in integral transmission connection with the slider of the second X-axis motor and are driven by the second X-axis motor to reciprocate between a feeding position and a riveting position.

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