Spindle automatic tightening device

Abstract

The present invention discloses an automatic spindle fastening device, which belongs to the technical field of fastening equipment. It mainly includes a rotating table, a storage unit, a transfer mechanism, a workbench and an actuator. The storage unit includes a storage component 1, a storage cavity 1 is provided inside the storage component 1, a hook is provided on the top of the storage component 1, and there are multiple storage units, which are arranged on the rotating table at intervals along the circumference of the rotating table. The workbench is provided with a transfer channel located above the rotating table. The actuator includes a hydraulic wrench installed on the workbench. The transfer mechanism includes a power slide, a pushing structure and a pushing end. The power slide can move in the vertical direction. A hook slot is provided on the power slide, and the shape of the hook slot is adapted to the shape of the hook. The automatic spindle fastening device of the present invention can replace manual labor to achieve batch nut fastening operations and reduce labor intensity.

Description

Technical Field

[0001] The invention relates to the technical field of fastening equipment, and in particular to an automatic spindle fastening device. Background Art

[0002] like Figure 1 As shown, in the production process of the electric spindle, it is necessary to thread the locking nut 200 with the external thread 101 on the shaft core 100 with a set torque, so that the locking nut 200 is tightly fitted with the shaft core 100 to axially position the components stacked on the shaft core 100 on the shaft core 100.

[0003] However, in the prior art, the locking nuts 200 are usually locked onto the shaft core 100 one by one manually using a hydraulic wrench. This method greatly increases the manual labor for batch production and has high labor intensity.

[0004] Therefore, it is necessary to provide a new automatic spindle fastening device. Summary of the invention

[0005] Based on the above problems existing in the prior art, an object of an embodiment of the present invention is to provide an automatic spindle tightening device, which can replace manual work to perform batch nut tightening operations and reduce labor intensity.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an automatic spindle tightening device, including a rotating table, a storage unit, a transfer mechanism, a workbench and an actuator, the storage unit includes a storage piece one, a storage cavity one is provided inside the storage piece one, a hook is provided on the top of the storage piece one, there are multiple storage units, multiple storage units are arranged on the rotating table at intervals along the circumference of the rotating table, multiple shaft cores are accommodated in the storage cavities one of the multiple storage units in a one-to-one correspondence, the workbench is provided with a transfer channel located above the rotating table, the actuator includes a hydraulic wrench installed on the workbench, the transfer mechanism includes a power slide, a pushing structure and a pushing end, the power slide can move in the vertical direction, the pushing end is relative to the input port of the transfer channel, the power slide is close to the side of the input port of the transfer channel, a hook slot is provided on the power slide, the shape of the hook slot is the same as the hook slot The shapes of the hooks are adapted, and when the hook slots and the hooks of the power slide are at the same height, when the storage units rotate with the rotating table, the hooks of multiple storage units can pass through the hook slots of the power slide one by one, so that when the rotating table rotates to drive the hook of one of the storage units to pass into the hook slot of the power slide, the power slide moves in the vertical direction and can pull the storage unit to move in the vertical direction with the power slide. The pushing structure is used to drive the pushing end to perform linear telescopic motion. The power slide moves up and can pull the storage unit to move to the position where the shaft core in the storage cavity is relative to the transfer channel. Then the pushing structure drives the pushing end to extend and push the shaft core on the storage unit out of the storage cavity and enter the transfer channel together. When the shaft core enters the transfer channel, the locking nut on the shaft core can cooperate to pass through the ratchet of the hydraulic wrench. When the ratchet rotates with a set torque, the locking nut is driven to rotate relative to the shaft core until the locking nut is locked on the shaft core.

[0007] Furthermore, a center hole 1 is provided at one end of the shaft core away from the locking nut, and the pushing end includes a plug, and the shape of the plug is adapted to the shape of the center hole 1.

[0008] Furthermore, a plurality of storage positions are arranged at circumferential intervals along the upper edge of the rotating table, and the shapes of the storage positions are suitable for the storage unit to be placed in or removed from the storage positions in the vertical direction. The storage cavity of the storage unit is a circular hole structure adapted to the axis core, and when the storage unit is placed on the storage position of the rotating table, the storage cavity of the storage unit is in an inclined state.

[0009] Furthermore, the storage unit also includes a retractable shell, which is suitable for being accommodated in a storage cavity of a storage component. A retractable cavity is formed hollow inside the retractable shell. The retractable cavity has a structure with an open front end and a closed rear end, and the shaft core is suitable for being accommodated in the retractable cavity.

[0010] Furthermore, a slot is provided on the outer peripheral wall of the retractable shell, and a transport module is provided on the workbench, wherein the transport module includes a movable seat, a claw and an elastic member 2. The movable seat is slidably arranged on the workbench along the axial direction of the transfer channel, and the claw is telescopically arranged on the movable seat along the radial direction of the transfer channel and close to the transfer channel. The elastic member 2 is arranged between the movable seat and the claw, and the elastic member 2 always applies elastic force to the claw to drive the claw to extend away from the movable seat and close to the transfer channel. The claw has an inclined separation wall on the side facing the input port of the transfer channel, and the inclined separation wall is inclined upward from the input port to the output port. When the retractable shell and the shaft core move in the transfer channel until the shaft core and the locking nut are fully tightened in place, the slot on the retractable shell is relative to the claw, and at this time, the claw extends out and is clamped into the slot under the elastic force of the elastic member 2.

[0011] Furthermore, the pushing structure includes a body, and an output rod mounted on the body and capable of being driven by the body to telescopically move axially, and the pushing end is mounted at one end of the output rod close to the workbench.

[0012] Furthermore, the pushing end also includes a piston rod, a cover plate and an elastic member 1. The piston rod is slidably arranged along the axial direction of the output rod at an end of the output rod close to the workbench, the plug is installed at the front end of the piston rod, the cover plate is arranged on a side of the plug close to the piston rod, and the elastic member 1 is arranged between the piston rod and the output rod. The elastic member 1 always applies an elastic force to the piston rod to drive the piston rod to extend away from the output rod.

[0013] Furthermore, the actuator also includes a mounting frame, the hydraulic wrench is mounted on the mounting frame, and the mounting frame is slidably disposed on the workbench along the radial direction of the transfer channel.

[0014] Furthermore, the hydraulic wrench includes a body, a ratchet and a sleeve, the body is mounted on a mounting frame, the ratchet is rotatably engaged with the body, the ratchet can be driven to rotate by the body, the sleeve is detachably mounted on the inner side of the ratchet, and the inner cavity shape of the sleeve is adapted to the outer shape of the locking nut.

[0015] Furthermore, the plug is an internal support clamp structure.

[0016] The beneficial effects of the present invention are as follows: the automatic spindle fastening device provided by the present invention includes a rotating table, a storage unit, a transfer mechanism, a workbench and an actuator, the storage unit includes a storage piece, the interior of the storage piece is provided with a storage cavity suitable for accommodating an axis core, the top of the storage piece is connected with a hook, there are multiple storage units, the multiple storage units are arranged on the rotating table at intervals along the circumference of the rotating table, and the multiple axis cores are accommodated in the storage cavities of the multiple storage units one by one, so that the rotating table can drive the multiple storage units and the multiple axis cores to rotate around the axis of the rotating table when rotating, the workbench is provided with a transfer channel located above the rotating table, and the actuator includes The hydraulic wrench installed on the workbench, the transfer mechanism includes a power slide, a pushing structure and a pushing end, the power slide can move in the vertical direction, the pushing end is relative to the input port of the transfer channel, the power slide is close to the input port of the transfer channel, a hook slot is provided on the power slide, the shape of the hook slot is adapted to the shape of the hook, so that when the hook slot of the power slide and the hook are at the same height, the hooks of multiple storage units can pass through the hook slot of the power slide one by one when the storage unit rotates with the rotating table, so that when the rotating table rotates to drive the hook of one of the storage units to penetrate the hook slot of the power slide, the power slide moves vertically. The straight direction movement can pull the storage unit to move along the vertical direction with the power slide, and the pushing structure is used to drive the pushing end to perform linear telescopic movement. The power slide moves up to pull the storage unit to move to the relative position of the shaft core in the storage chamber and the transfer channel. Then the pushing structure drives the pushing end to extend and push the shaft core on the storage unit out of the storage chamber and enter the transfer channel together. When the shaft core enters the transfer channel, the locking nut on the shaft core can cooperate to penetrate the ratchet of the hydraulic wrench. When the ratchet rotates with a set torque, the locking nut is driven to rotate relative to the shaft core until the locking nut is locked on the shaft core. Therefore, the automatic fastening device for the main shaft provided by the embodiment of the present invention can be realized through multiple A storage unit is used to place multiple shaft cores. The storage unit and the corresponding shaft core power slide are selectively matched by the rotation of the rotating table. Under the traction of the power slide, the storage unit and the corresponding shaft core are moved to a position relative to the transfer channel of the workbench. The shaft core on the storage unit is pushed to the transfer channel by the pushing end, so that the locking nut on the shaft core can be inserted into the ratchet of the hydraulic wrench. The locking nut on the shaft core is twisted and tightened by the hydraulic wrench. Compared with the prior art, there is no need to manually operate the hydraulic wrench to lock the shaft core and the locking nut. The automatic spindle tightening device provided in the embodiment of the present invention reduces manual labor and reduces labor intensity for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram before and after the shaft core and the locking nut are assembled.

[0019] Figure 2 A schematic diagram of a working state of the automatic spindle fastening device provided in an embodiment of the present invention.

[0020] Figure 3 A schematic diagram of the positional relationship between a storage unit and an axis core provided in an embodiment of the present invention.

[0021] Figure 4 for Figure 3 Front view of the structure shown.

[0022] Figure 5 For along Figure 4 Cross-sectional view along the EE direction.

[0023] Figure 6 A cross-sectional view of a retractable shell provided in an embodiment of the present invention.

[0024] Figure 7 An exploded view of a transfer mechanism provided in an embodiment of the present invention.

[0025] Figure 8 A cross-sectional view of a pushing end provided in an embodiment of the present invention.

[0026] Fig. 9 A schematic diagram of an actuator on a workbench in a certain position state provided by an embodiment of the present invention.

[0027] Fig.10 for Fig. 9 Front view of the workbench shown.

[0028] Fig.11 For along Fig.10 Cross-sectional view along the GG direction.

[0029] Fig.12 A schematic diagram of the three-dimensional structure of a transport module provided in an embodiment of the present invention.

[0030] Fig.13 A cross-sectional view of a transport module provided in an embodiment of the present invention.

[0031] Fig.14 A schematic diagram of the three-dimensional structure of an actuator provided in an embodiment of the present invention.

[0032] Fig.15 A front view of an actuator provided in an embodiment of the present invention.

[0033] Fig.16 For along Fig.15 Cross-sectional view along the HH direction.

[0034] Fig.17 A schematic diagram of the three-dimensional structure of a hydraulic wrench provided in an embodiment of the present invention.

[0035] Fig.18 An exploded view of a hydraulic wrench provided in an embodiment of the present invention.

[0036] Fig.19 A schematic diagram of an actuator on a workbench in another position state provided by an embodiment of the present invention.

[0037] Fig. 20 A schematic diagram of another working state of the automatic spindle fastening device provided in an embodiment of the present invention.

[0038] Fig.21 for Fig. 20 A magnified schematic diagram of area A in the middle.

[0039] Fig. 22 for Fig. 20 A magnified schematic diagram of area B.

[0040] Among them, the reference numerals in the figure are: 100, shaft core; 101, external thread; 103, center hole 1; 200, locking nut; 201, push groove; 1, rotating table; 11, storage position; 10, storage unit; 2, storage element 1; 21, storage cavity 1; 22, storage shell; 221, storage cavity; 222, window; 223, slot; 4, transfer mechanism; 41, frame; 42, power slide; 421, hook slot; 43, push structure; 431, body; 432, output Output rod; 44, push end; 441, piston rod; 445, cover plate; 446, elastic part 1; 447, plug; 5, workbench; 51, transfer channel; 511, input port; 512, output port; 52, handling module; 521, moving seat; 522, claw; 523, elastic part 2; 53, swing frame; 6, actuator; 61, mounting frame; 62, hydraulic wrench; 621, fuselage; 622, ratchet; 623, sleeve; 624, limit clamp; 7, hook. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0042] It should be noted that when an element is referred to as being "connected to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] Reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, not all references are to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner.

[0046] Please refer to Figures 1 to 22As shown, an automatic spindle fastening device provided by the present invention is now described, the automatic spindle fastening device comprises a rotating table 1, a storage unit 10, a transfer mechanism 4, a workbench 5 and an actuator 6, the storage unit 10 comprises a storage piece 2, the interior of the storage piece 2 is provided with a storage cavity 21 suitable for accommodating the shaft core 100, the top of the storage piece 2 is provided with a hook 7, the storage unit 10 has a plurality of storage units 10, the plurality of storage units 10 are arranged on the rotating table 1 at intervals along the circumference of the rotating table 1, the plurality of shaft cores 100 are accommodated in the storage cavities 21 of the plurality of storage units 10 one by one, so that the rotating table 1 can drive the plurality of storage units 10 and the plurality of shaft cores 100 to rotate around the axis of the rotating table 1 when rotating, the workbench 5 is provided with a storage cavity 21 located on the rotating table 1 The transfer channel 51 of the side, the actuator 6 includes a hydraulic wrench 62 installed on the workbench 5, the transfer mechanism 4 includes a power slide 42, a pushing structure 43 and a pushing end 44, the power slide 42 can move in the vertical direction, the pushing end 44 is relative to the input port 511 of the transfer channel 51, the power slide 42 is close to the side of the input port 511 of the transfer channel 51, and a hook slot 421 is provided on the power slide 42, and the shape of the hook slot 421 is adapted to the shape of the hook 7, so that when the hook slot 421 of the power slide 42 is at the same height as the hook 7, when the storage unit 10 rotates with the rotating table 1, the hooks 7 of multiple storage units 10 can pass through the hook slot 421 of the power slide 42 one by one, so that when the rotating table When the hook 7 of one of the storage units 10 is driven to penetrate the hook slot 421 of the power slide 42 by rotating, the power slide 42 moves in the vertical direction to pull the storage unit 10 to move along with the power slide 42 in the vertical direction. The pushing structure 43 is used to drive the pushing end 44 to perform linear telescopic motion. The power slide 42 moves upward to pull the storage unit 10 to move to the position where the shaft core 100 in the storage cavity 21 is opposite to the transfer channel 51. Then, the pushing structure 43 drives the pushing end 44 to extend to push the shaft core 100 on the storage unit 10 out of the storage cavity 21 and into the transfer channel 51. When the shaft core 100 enters the transfer channel 51, the locking nut 200 on the shaft core 100 can cooperate to penetrate into the ratchet 622 of the hydraulic wrench 62. When the ratchet 62 is engaged, the locking nut 200 on the shaft core 100 can be inserted into the ratchet 622 of the hydraulic wrench 62. When the shaft core 100 is rotated at a set torque, the locking nut 200 is driven to rotate relative to the shaft core 100 until the locking nut 200 is locked on the shaft core 100. Thus, through the above technical scheme, the automatic spindle fastening device provided by the embodiment of the present invention can accommodate multiple shaft cores 100 through multiple storage units 10, and the storage unit 10 and the corresponding shaft core 100 power slide 42 are selectively matched by the rotation of the rotating table 1. Under the traction of the power slide 42, the storage unit 10 and the corresponding shaft core 100 are moved to a position relative to the transfer channel 51 of the workbench 5, and the shaft core 100 on the storage unit 10 is pushed to the transfer channel 51 by the pushing end 44, so that the locking nut 200 on the shaft core 100 can be inserted into the ratchet 622 of the hydraulic wrench 62.The locking nut 200 on the shaft core 100 is twisted and tightened by the hydraulic wrench 62. Compared with the prior art, there is no need to manually operate the hydraulic wrench 62 to lock the shaft core 100 and the locking nut 200. The automatic spindle tightening device provided by the embodiment of the present invention reduces manual labor and labor intensity for mass production.

[0047] like Figure 3 , Figure 4 as well as Figure 5 As shown, in some of the embodiments, a locking nut 200 is pre-screwed into the shaft core 100 accommodated in the storage cavity 21 of the storage element 2, and then the locking nut 200 is further tightened with a fixed torque by the automatic spindle tightening device provided by the embodiment of the present invention.

[0048] like Figure 5 , Figure 8 As shown, in some embodiments, a center hole 103 is provided at one end of the shaft core 100 away from the locking nut 200, and the pushing end 44 includes a plug 447, and the shape of the plug 447 is adapted to the shape of the center hole 103, so that when the plug 447 is inserted into the center hole 103 on the shaft core 100, the radial shaking of the shaft core 100 can be reduced, thereby avoiding accidental collision caused by the deviation of the shaft core 100 when the shaft core 100 is transferred between the storage chamber 21 and the transfer channel 51.

[0049] In some of the embodiments, the plug 447 is an internal support clamp structure, which is tightened between the outer wall of the plug 447 and the inner wall of the center hole 103. On the one hand, the plug 447 can fasten and clamp the shaft core 100, and on the other hand, it can limit the rotational freedom of the shaft core 100 to prevent the shaft core 100 from rotating with the locking nut 200 when the locking nut 200 is twisted.

[0050] like Figure 2 As shown, in some embodiments, the rotating table 1 is a hollow rotating table, and a swing frame 53 is installed on the workbench 5. The swing frame 53 passes upward from the center of the rotating table 1 to connect the workbench 5, so that the workbench 5 and the transfer channel 51 are located directly above the rotating table 1. The design of stacking the workbench 5 and the rotating table 1 up and down is conducive to reducing the floor space occupied by the automatic spindle fastening device provided by the embodiment of the present invention. In addition, the swing frame 53 can drive the workbench 5 to swing, so that the inclination angle of the transfer channel 51 can be flexibly adjusted to adjust the height of the input port 511 or the height of the output port 512 to adapt to different working conditions.

[0051] like Figure 2As shown, in some of the embodiments, a plurality of storage positions 11 are arranged on the turntable 1 at circumferential intervals along the turntable 1, and the shapes of the storage positions 11 are suitable for the storage unit 10 to be placed in or out of the storage positions 11 in the vertical direction, so that the storage unit 10 can be firmly placed in a fixed position on the turntable 1, and when the power slide 42 pulls the storage unit 10 upward in the vertical direction, the storage unit 10 can be removed from the corresponding storage position 11, and when the power slide 42 pulls the storage unit 10 downward in the vertical direction, the storage unit 10 can be placed in the corresponding storage position 11.

[0052] like Figure 2 As shown, in some embodiments, the storage cavity 21 of the storage unit 2 is a circular hole structure adapted to the shaft core 100, so that when the shaft core 100 is accommodated in the storage cavity 21, the storage cavity 21 can be adapted to the shape of the shaft core 100; in addition, in this embodiment, when the storage unit 10 is placed on the storage position 11 of the rotating table 1, the storage cavity 21 of the storage unit 10 is in a tilted state, so that when the shaft core 100 is accommodated in the storage cavity 21, the shaft core 100 will also tilt accordingly, and specifically, one end of the shaft core 100 where the locking nut 200 is installed is tilted upward, so that on the one hand, the shaft core 100 is not easy to accidentally fall out of the storage cavity 21, and on the other hand, before the locking nut 200 has not fastened the components on the shaft core 100 to the shaft core 100, the components on the shaft core 100 can be kept stacked on the shaft core 100 under the action of gravity and are not easy to shake or dislocate relative to the shaft core 100.

[0053] like Figure 5 and Figure 6 As shown, in some embodiments, the storage unit 10 further includes a retractable shell 22, which is suitable for being received in the storage cavity 21 of the storage element 2, and a retractable cavity 221 is formed in the retractable shell 22, and the retractable cavity 221 is a structure with an open front end and a closed rear end, and the shaft core 100 is suitable for being received in the retractable cavity 221 in the retractable shell 22, so that the shaft core 100 can be inserted into the retractable cavity 221 from the front end opening of the retractable cavity 221 and abut against the rear end of the retractable cavity 221, and a card slot 223 is provided on the outer peripheral wall of the retractable shell 22, as shown in FIG. Fig.11 As shown, a transport module 52 is provided on the workbench 5, and the transport module 52 includes a moving seat 521, a clamping claw 522 and an elastic member 523. The moving seat 521 is slidably arranged on the workbench 5 along the axial direction of the transfer channel 51, and the clamping claw 522 is telescopically arranged on the moving seat 521 along the radial direction of the transfer channel 51 and close to the transfer channel 51. The elastic member 523 is arranged between the moving seat 521 and the clamping claw 522. The elastic member 523 always applies elastic force to the clamping claw 522 to drive the clamping claw 522 to extend away from the moving seat 521 and close to the transfer channel 51. Fig.12 and Fig.13As shown, the side of the claw 522 facing the input port 511 of the transfer channel 51 has an inclined separation wall, and the inclined separation wall is inclined upward from the input port 511 to the output port 512. In this way, when the retractable shell 22 slides through the claw 522 in the transfer channel 51 from the input port 511 to the output port 512, the retractable shell 22 will resist the inclined separation wall of the claw 522, thereby pushing the claw 522 to retract close to the moving seat 521, and at the same time, the claw 522 is away from the transfer channel 51, so that the claw 522 is separated from the transfer channel 51 to avoid the passage of the retractable shell 22. Fig. 22 As shown, when the retractable shell 22 and the shaft core 100 move in the transfer channel 51 until the shaft core 100 and the locking nut 200 are completely fastened in place, the slot 223 on the retractable shell 22 is relative to the claw 522. At this time, the claw 522 extends out and is stuck in the slot 223 under the elastic force of the elastic member 523. Subsequently, when the claw 522 moves from the input port 511 to the output port 512 along the moving seat 521, the claw 522 faces one side of the output port 512 of the transfer channel 51 and abuts against the slot 223. At this time, the claw 522 exerts an axial force along the transfer channel 51 on the slot 223 and the retractable shell 22. The retractable shell 22 is pulled by the movable seat 521 and moves together in the transfer channel 51 from the input port 511 to the output port 512, so that the retractable shell 22 and the shaft core 100 accommodated in the retractable shell 22 can be continuously transferred to the output port 51 to the next workstation. For example, when the output port 51 of the transfer channel 51 is docked with the conveying table (not shown), the conveying table drives the retractable shell 22 and the shaft core 100 accommodated in the retractable shell 22 out of the transfer channel 51; or the retractable shell 22 and the shaft core 100 accommodated in the retractable shell 22 are taken out from the output port 51 and transferred to the next workstation by a robot.

[0054] like Figure 5 and Figure 6 As shown, in some of the embodiments, a window 222 connecting the receiving chamber 221 with the outside is provided on the receiving shell 22 at the rear end of the receiving chamber 221, and the window 222 is positioned relative to the center hole 103 of the shaft core 100 accommodated in the receiving chamber 221, so that the plug 447 of the pushing end 44 can pass through the window 222 of the receiving shell 22 and be inserted into the center hole 103 of the shaft core 100.

[0055] like Figure 7 As shown, in some embodiments, the transfer mechanism 4 also includes a frame 41, and a power slide 42 is slidably installed on the frame 41 along the vertical direction. The power slide 42 can be but is not limited to a transmission structure such as a spiral pair structure or a gear rack structure to achieve sliding in the vertical direction.

[0056] like Figure 7 and Figure 8As shown, in some embodiments, the pushing structure 43 includes a body 431, and an output rod 432 installed on the body 431 and capable of being driven by the body 431 to move telescopically along the axial direction, the body 431 is installed on the frame 41, and the pushing end 44 is installed at one end of the output rod 432 close to the workbench 5; it can be understood that the pushing structure 43 can be but is not limited to an electric push rod, a pneumatic push rod, or the like that can realize the telescopic movement of the output rod 432 relative to the body 431.

[0057] like Figure 8 As shown, in some embodiments, the push end 44 further includes a piston rod 441, a cover plate 445 and an elastic member 446. The piston rod 441 is slidably disposed along the axial direction of the output rod 432 at an end of the output rod 432 close to the workbench 5. The plug 447 is mounted on the front end of the piston rod 441. The cover plate 445 is disposed on a side of the plug 447 close to the piston rod 441. The elastic member 446 is disposed between the piston rod 441 and the output rod 432. 6 always exerts an elastic force on the piston rod 441 to drive the piston rod 441 away from the output rod 432, so that when the plug 447 is inserted into the central hole 103 on the shaft core 100, the cover plate 445 abuts against the rear end of the retractable shell 22, and the cover plate 445 and the plug 447 exert a thrust from the input port 511 to the output port 512 on the shaft core 100 and the retractable shell 22, so that the shaft core 100 and the retractable shell 22 move in a straight line in the transfer channel 51, as shown in FIG. Fig.21As shown, the piston rod 441 can retract and squeeze the elastic member 446, so that the plug 447 and the cover plate 445 in the push end 44 can elastically hold the locking nut 200 against the ratchet 622 in the axial direction. In this way, on the one hand, since the locking nut 200 cannot be inserted into the ratchet 622 when the locking nut 200 is not aligned with the ratchet 622, in the design of the present invention, when the locking nut 200 is not aligned with the ratchet 622, the piston rod 441 and the plug 447 of the push end 44 are forced to elastically retract. When the ratchet 622 rotates until the locking nut 200 is aligned with the ratchet 622, the plug 447 can elastically extend to push the locking nut 200 into the ratchet 622. On the other hand, the elastic resistance between the locking nut 200 and the ratchet 622 can avoid the formation of hard contact between the locking nut 200 and the ratchet 622 to generate a large extrusion force and impact force. The soft contact between the locking nut 200 and the ratchet 622 can reduce the wear and collision between the shaft core 100 and the locking nut 200, and between the locking nut 200 and the ratchet 622. On the other hand, because the locking nut 200 will gradually approach the shaft core 100 when the locking nut 200 is screwed into the shaft core 100, if the shaft core 100 remains stationary, the locking nut 200 needs to be axially displaced relative to the ratchet 622. In this way, the axial displacement between the locking nut 200 and the ratchet 622 will cause scratches between the locking nut 200 and the ratchet 622. The embodiment of the present invention provides a technical solution. In the process of the ratchet 622 rotating to drive the locking nut 200 to screw close to the shaft core 100, the pushing end 44 will always apply elastic force to push the shaft core 100 in the direction of the locking nut 200 and the ratchet 622, thereby avoiding the wear caused by the axial displacement between the locking nut 200 and the ratchet 622.

[0058] like Fig.14 As shown, in some embodiments, the actuator 6 also includes a mounting frame 61, and the hydraulic wrench 62 is mounted on the mounting frame 61. The mounting frame 61 is set on the workbench 5 along the radial sliding direction of the transfer channel 51, so that when the mounting frame 61 slides close to the transfer channel 51, it can drive the hydraulic wrench 62 to move to the ratchet 622 relative to the transfer channel 51, so that the locking nut 200 on the shaft core 100 is inserted into the ratchet 622. When the shaft core 100 needs to reach the output port 512 from the input port 511 in the transfer channel 51, the mounting frame 61 slides away from the transfer channel 51, driving the hydraulic wrench 62 to be staggered with the transfer channel 51, so that the shaft core 100 can pass over the actuator 6.

[0059] like Fig.16 , Fig.17 and Fig.18As shown, in some embodiments, the hydraulic wrench 62 includes a body 621, a ratchet 622 and a sleeve 623. The body 621 is mounted on the mounting frame 61, the ratchet 622 is rotatably matched with the body 621, the ratchet 622 can be driven to rotate by the body 621, and the sleeve 623 is detachably mounted on the inner side of the ratchet 622, so that different specifications of locking nuts 200 can be adapted by replacing different sleeves 623. The inner cavity shape of the sleeve 623 is adapted to the outer shape of the locking nut 200. When the sleeve 623 is axially sleeved on the locking nut 200, the sleeve 623 can push the locking nut 200 to rotate in the circumferential direction; as shown in FIG. Figure 1 As shown, specifically, in this embodiment, the outer peripheral wall of the locking nut 200 is a circular structure, and a push groove 201 extending along the axial direction of the locking nut 200 is concavely provided on the outer peripheral wall of the locking nut 200, as shown in FIG. Fig.18 As shown, the inner side wall of the sleeve 623 is provided with a limit cam 624 extending in the axial direction. When the limit cam 624 of the sleeve 623 is aligned with the push groove 201 of the locking nut 200, the limit cam 624 cooperates to insert into the push groove 201, so that the locking nut 200 is inserted into the sleeve 623. In this way, when the ratchet 622 drives the sleeve 623 to rotate, a circumferential thrust can be generated between the limit cam 624 and the push groove 201, thereby driving the locking nut 200 to rotate with the ratchet 622. It can be understood that in other embodiments not shown in the figure, the locking nut 200 and the sleeve 623 can also be pushed circumferentially through a hexagonal shape or other non-rotating structures. It can be understood that the specific structure of the ratchet 622 being driven to rotate by the fuselage 621 is an existing mature technology, and no further elaboration is made here.

[0060] In some of the embodiments, when the locking nut 200 is inserted into the sleeve 623, the locking nut 200 and the sleeve 623 can be axially limited and abutted against each other to prevent the locking nut 200 from axially slipping out of the sleeve 623; specifically, a limiting step (not shown) is provided on the inner side wall of the sleeve 623, and when the locking nut 200 is inserted into the sleeve 623, the outer end surface of the locking nut 200 abuts against the limiting step of the sleeve 623, thereby achieving axial limitation of the locking nut 200 on the sleeve 623.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spindle automatic fastening device, characterized in that: It includes a rotating table, a storage unit, a transfer mechanism, a workbench and an actuator, the storage unit includes a storage piece, a storage cavity is provided inside the storage piece, a hook is provided on the top of the storage piece, the storage unit has a plurality of storage units, and the plurality of storage units are arranged on the rotating table at intervals along the circumference of the rotating table, and a plurality of shaft cores are accommodated in the storage cavities of the plurality of storage units in a one-to-one correspondence, a transfer channel located above the rotating table is provided in the workbench, the actuator includes a hydraulic wrench installed on the workbench, the transfer mechanism includes a power slide, a pushing structure and a pushing end, the power slide can move in a vertical direction, the pushing end is relative to the input port of the transfer channel, a center hole is provided at one end of the shaft core away from the locking nut, the pushing end includes a plug, the shape of the plug is adapted to the shape of the center hole, the plug is an internal support clamp structure, the power slide is provided on the side close to the input port of the transfer channel A hook slot, the shape of which is adapted to the shape of the hook. When the hook slot and the hook of the power slide are at the same height, when the storage unit rotates with the rotating table, the hooks of multiple storage units can pass through the hook slot of the power slide one by one. Therefore, when the rotating table rotates to drive the hook of one of the storage units to penetrate into the hook slot of the power slide, the power slide moves in the vertical direction and can pull the storage unit to move in the vertical direction with the power slide. The pushing structure is used to drive the pushing end to perform linear telescopic movement. The power slide moves up and can pull the storage unit to move to the relative position of the shaft core in the storage cavity and the transfer channel. Then the pushing structure drives the pushing end to extend and push the shaft core on the storage unit out of the storage cavity and enter the transfer channel together. When the shaft core enters the transfer channel, the locking nut on the shaft core can cooperate to penetrate into the ratchet of the hydraulic wrench. When the ratchet rotates with a set torque, the locking nut is driven to rotate relative to the shaft core until the locking nut is locked on the shaft core.

2. The automatic spindle fastening device according to claim 1, characterized in that: A plurality of storage positions are arranged at circumferential intervals along the upper edge of the rotating table, and the shapes of the storage positions are suitable for the storage unit to be placed in or removed from the storage positions in the vertical direction. The storage cavity of the storage unit is a circular hole structure adapted to the shaft core, and when the storage unit is placed on the storage position of the rotating table, the storage cavity of the storage unit is in an inclined state.

3. The automatic spindle fastening device according to claim 1, characterized in that: The storage unit also includes a retractable shell, which is suitable for being accommodated in a storage cavity of a storage element. A retractable cavity is formed hollow inside the retractable shell. The retractable cavity has a structure with an open front end and a closed rear end, and the shaft core is suitable for being accommodated in the retractable cavity.

4. The automatic spindle fastening device according to claim 3, characterized in that: A slot is provided on the outer peripheral wall of the retractable shell, and a transport module is provided on the workbench. The transport module includes a moving seat, a claw and an elastic member 2. The moving seat is slidably arranged on the workbench along the axial direction of the transfer channel, and the claw is telescopically arranged on the moving seat along the radial direction of the transfer channel and close to the transfer channel. The elastic member 2 is arranged between the moving seat and the claw, and the elastic member 2 always applies elastic force to the claw to drive the claw to extend away from the moving seat and close to the transfer channel. The claw has an inclined separation wall on the side facing the input port of the transfer channel, and the inclined separation wall is inclined upward from the input port to the output port. When the retractable shell and the shaft core move in the transfer channel until the shaft core and the locking nut are fully tightened in place, the slot on the retractable shell is relative to the claw, and at this time, the claw extends out and is clamped into the slot under the elastic force of the elastic member 2.

5. The automatic spindle fastening device according to claim 1, characterized in that: The pushing structure comprises a machine body, and an output rod installed on the machine body and capable of being driven by the machine body to telescopically move along the axial direction, and the pushing end is installed at one end of the output rod close to the workbench.

6. The automatic spindle fastening device according to claim 5, characterized in that: The pushing end also includes a piston rod, a cover plate and an elastic member 1. The piston rod is slidably arranged along the axial direction of the output rod at an end of the output rod close to the workbench. The plug is installed at the front end of the piston rod. The cover plate is arranged on a side of the plug close to the piston rod. The elastic member 1 is arranged between the piston rod and the output rod. The elastic member 1 always applies an elastic force to the piston rod to drive the piston rod to extend away from the output rod.

7. The automatic spindle fastening device according to claim 1, characterized in that: The actuator also includes a mounting frame, the hydraulic wrench is mounted on the mounting frame, and the mounting frame is slidably arranged on the workbench along the radial direction of the transfer channel.

8. The automatic spindle fastening device according to claim 7, characterized in that: The hydraulic wrench includes a body, a ratchet and a sleeve. The body is mounted on a mounting frame. The ratchet is rotatably engaged with the body. The ratchet can be driven to rotate by the body. The sleeve is detachably mounted on the inner side of the ratchet. The inner cavity shape of the sleeve is adapted to the outer shape of the locking nut.

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