CN107350791B - Full-automatic screw locking device - Google Patents

Full-automatic screw locking device Download PDF

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Publication number
CN107350791B
CN107350791B CN201710833341.0A CN201710833341A CN107350791B CN 107350791 B CN107350791 B CN 107350791B CN 201710833341 A CN201710833341 A CN 201710833341A CN 107350791 B CN107350791 B CN 107350791B
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China
Prior art keywords
screw
lifting
suction nozzle
screw driver
driver
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CN107350791A (en
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王金龙
潘晓勇
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Sichuan Changhong Intelligent Manufacturing Technology Co ltd
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Sichuan Changhong Intelligent Manufacturing Technology Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/06Screw or nut setting or loosening machines

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Manipulator (AREA)

Abstract

The invention discloses a full-automatic screw locking device, which belongs to the field of automatic machinery and comprises a screw driver base, a screw driver lifting driving mechanism, a screw driver lifting mechanism and a screw driver mechanism; the screw driver lifting mechanism and the screw driver mechanism are arranged on the screw driver base. The screw driver lifting driving mechanism controls the screw driver lifting mechanism to ascend or descend, and the screw driver lifting mechanism drives the screw driver mechanism to ascend or descend; the screw driver mechanism comprises a screw suction nozzle mechanism, a screw tightening mechanism and a linear guide rail, and the screw suction nozzle mechanism and the screw tightening mechanism are in sliding connection with the linear guide rail. The invention can ensure that the screw is installed in a vertical state, ensure that the screw installation torque is consistent, avoid the phenomena of modeling, twisting, and the like, and avoid the damage of workpieces.

Description

Full-automatic screw locking device
Technical Field
The invention relates to a full-automatic screw locking device which is used for tightening screws to assemble workpieces and belongs to the field of automatic machinery.
Background
Currently, the electronic manufacturing industry takes up a major assembly position by using a screw assembly locking mode. Particularly, as products are developed toward a slim and lightweight, the sizes of screws used are gradually reduced. The locking screw has higher requirements in the production process, and the locking of the screw is completed at high speed and high efficiency, so that the locking screw is an outstanding problem in assembly. The locking is mainly performed manually in actual production, and the production efficiency is low and the labor intensity is high. If the worker installs with electric screwdriver, then efficiency obtains certain promotion, but can't guarantee the accuracy of every screw installation, can't guarantee the uniformity of every screw installation torsion yet, cause the screw to warp or cross to twist smooth tooth very easily moreover, causes screw damage or work piece screw hole damage or work piece damage.
Disclosure of Invention
The invention aims to solve the technical problems that the screw mounting torque cannot ensure consistency, so that screw distortion or over-screwing of a sliding tooth is easily caused, and the screw is damaged, or a screw hole of a workpiece is damaged or the workpiece is damaged; therefore, the full-automatic screw locking device is provided, and the screw torque can be ensured to be consistent by the linear guide rail.
The technical scheme adopted by the invention is as follows: a full-automatic screw locking device comprises a screw driver base, a screw driver lifting driving mechanism, a screw driver lifting mechanism and a screw driver mechanism. The screw driver lifting mechanism and the screw driver mechanism are arranged on the screw driver base; the screw driver lifting driving mechanism controls the screw driver lifting mechanism to ascend or descend, and the screw driver lifting mechanism drives the screw driver mechanism to ascend or descend; the screw driver mechanism comprises a screw suction nozzle mechanism, a screw tightening mechanism and a linear guide rail.
Further, the screw lifting driving mechanism comprises a screw, a driving stepping motor, a screw fixing seat, a screw supporting seat and a lifting nut block, wherein the screw fixing seat and the screw supporting seat are respectively arranged on one side of the screw driver base, threads are arranged in the middle of the screw, the upper end of the screw is rotationally connected with the screw fixing seat, and the lower end of the screw is rotationally connected with the screw supporting seat; the driving stepping motor is connected with the lead screw and drives the lead screw to rotate; the middle part of the lifting nut block is provided with a screw hole matched with the screw thread of the screw rod, and one side of the lifting nut block is connected with a screw driver lifting mechanism; the side surface of the lifting nut block is provided with a plane in sliding contact with the screwdriver base.
Further, the driving stepping motor is arranged in the screwdriver base, a driving belt wheel is arranged on a rotating shaft of the driving stepping motor, a driven belt wheel is arranged at the end part of the screw rod, and the driving belt wheel is connected with the driven belt wheel through a transmission belt.
Further, a switch detection plate is arranged on the lifting nut block, a group of position switches are respectively arranged on the upper part and the lower part of the screwdriver base, and the position switches are used for detecting the positions of the switch detection plate.
Further, the screw driver lifting mechanism comprises a first sliding block and a second sliding block, the first sliding block and the second sliding block are in sliding connection with the linear guide rail, a tightening servo motor mounting plate is arranged on the first sliding block, and the tightening servo motor mounting plate is connected with a screw tightening mechanism; the second sliding block is provided with a lifting supporting plate, the lifting supporting plate is connected with the lifting nut block, and the lifting supporting plate is arranged at the lower end of the tightening servo motor mounting plate.
Further, a lifting buffer shaft and a compression spring are arranged between the lifting supporting plate and the tightening servo motor mounting plate.
Further, the screw tightening mechanism comprises a tightening servo motor, a shaft coupling, a screw driver installation shaft and a screw driver, wherein the tightening servo motor is connected with the screw driver lifting mechanism, the screw driver installation shaft is connected with the tightening servo motor through the shaft coupling, and the screw driver is connected with the screw driver installation shaft.
Further, the screw suction nozzle mechanism comprises a third sliding block, a suction nozzle supporting plate and an adsorption device, wherein the third sliding block is in sliding connection with the linear guide rail, the suction nozzle supporting plate is fixed on the third sliding block, and the adsorption device is arranged on the suction nozzle supporting plate.
Further, the adsorption device comprises a suction nozzle body, a rotary bearing, a sealing assembly, a vacuum pump and a vacuum joint, wherein a hollow cavity is arranged in the suction nozzle body, the screw driver is arranged in the cavity, the vacuum pump is communicated with the cavity through the vacuum joint, and the sealing assembly is arranged between the screw driver and the suction nozzle body and is used for sealing the upper end of the cavity; the rotary bearing is arranged at the lower end of the sealing component and is connected with the screw driver and the suction nozzle body.
Further, the adsorption device comprises a suction nozzle body, a rotary bearing, a sealing assembly, a vacuum pump and a vacuum joint, wherein a hollow cavity is arranged in the suction nozzle body, the screw driver is arranged in the cavity, the vacuum pump is communicated with the cavity through the vacuum joint, and the sealing assembly is arranged between the screw driver and the suction nozzle body and is used for sealing the upper end of the cavity; the rotary bearing is arranged at the lower end of the sealing component and is connected with the screw driver and the suction nozzle body.
Further, the screw suction nozzle mechanism further comprises a protection device, the protection device comprises a bottom end limiting block, a lifting buffer shaft II, a compression spring II, a suction nozzle limiting switch and a suction nozzle switch plate, the bottom end limiting block is arranged at the bottom end of the screw driver base and is positioned below the suction nozzle supporting plate, the lifting buffer shaft II is arranged on the bottom end limiting block and penetrates through the suction nozzle supporting plate, and the compression spring II is arranged between the lifting buffer shaft II and the suction nozzle supporting plate; the suction nozzle switch is arranged on the side face of the screwdriver base, and the suction nozzle limit switch is arranged on the suction nozzle supporting plate.
By adopting the technical scheme, the invention has the beneficial effects that:
(1) The screw driver base is arranged on the workbench and used for bearing the screw driver lifting mechanism, the screw driver lifting driving mechanism and the screw driver mechanism, the screw driver lifting driving mechanism controls the screw driver lifting mechanism to ascend or descend so as to control the screw driver mechanism to ascend or descend, the screw driver mechanism is provided with the screw suction nozzle mechanism for sucking screws, the screw driver screwing mechanism can screw the screws, the linear guide rail ensures that the screws are installed in a vertical state, the screw installation torsion is consistent, the phenomena of modeling screwing distortion and the like are avoided, and the damage to workpieces is avoided.
(2) In the full-automatic screw locking device, the motor of the screw lifting driving mechanism drives the screw rod to rotate, and the screw rod rotates in the screw rod fixing seat and the screw rod supporting seat and cannot move up and down; when the screw rod rotates, the lifting nut block slides up and down due to the matching of the threads, so that the screw driver lifting mechanism is driven to move up and down, and the lifting control is convenient.
(3) The screw driver is driven to lift by the driving stepping motor, so that the screw driver is driven to lift, and the purposes of rapidness, stability and reliability are realized; in addition, the driving stepping motor is arranged at the back side of the screwdriver base, the lifting driving mechanism is arranged at the left side, the structure is compact and simple, the positioning time can be saved, the efficiency is improved, the device also has the advantages of effectively reducing the weight of a body and the moment of inertia, is more suitable for being installed on a manipulator, can be used for selecting a robot with lighter load, and saves the cost.
(4) The invention adopts the measures of buffer spring, switch detection and the like for the lifting of the screwdriver and the lifting of the suction nozzle body, thereby avoiding the damage and fault protection of the screwdriver to the product and providing basis for fault analysis.
(5) The suction nozzle adopts an integrated design, is provided with a sealing component, and increases the air tightness of a vacuum system; the coaxiality of the suction nozzle body through which the screwdriver passes is improved, the torque loss of the screwdriver is reduced, and the process torque requirement of a product is effectively ensured.
(6) According to the invention, the screw driver is driven by the servo motor, so that the torque is monitored in real time, the stability of the torque and the rotation stability are improved, and the slipping and over-torque locking are avoided.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention 1;
FIG. 2 is a schematic view of the overall structure of the present invention 2;
FIG. 3 is a schematic view of the overall structure of the present invention, shown in FIG. 3;
FIG. 4 is a schematic partial cross-sectional view of the present invention;
FIG. 5 is an enlarged schematic view of the invention I;
wherein: 1. the screw driver comprises a screw driver base, 2 screw driver lifting driving mechanisms, 3 screw driver lifting mechanisms, 4 screw driver suction nozzle mechanisms, 5 screw driver tightening mechanisms, 6, linear guide rails, 21, screw driver fixing seats, 22, screw driver supporting seats, 23, screw drivers, 24, driving stepping motors, 25, driving pulleys, 26, driven pulleys, 27, driving belts, 28, lifting nut blocks, 29, position switches, 210, switch detection plates, 31, first sliding blocks, 32, second sliding blocks, 33, screwing servo motor mounting plates, 34, lifting supporting plates, 35, lifting buffer shafts, 36, compression springs, 37, screw driver limit switches, 38, screw driver switch plates, 41, third sliding blocks, 42, suction nozzle supporting plates, 43, suction nozzle bodies, 44, rotating bearings, 45, sealing suction nozzles, 46, vacuum joints, 47, bottom end limiting blocks, 48, lifting buffer shafts, 49, compression springs, 410, suction nozzle limit switches, 411, switch plates, 51, screwing servo motors, 52, couplings, 53, screw driver mounting shafts, 54 and screw drivers.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention relates to a full-automatic screw locking device which comprises a screw driver base 1, a screw driver lifting driving mechanism 2, a screw driver lifting mechanism 3 and a screw driver mechanism; the screw driver lifting mechanism 3 and the screw driver mechanism are arranged on the screw driver base 1. The screw driver lifting driving mechanism 2 controls the screw driver lifting mechanism 3 to ascend or descend, and the screw driver lifting mechanism 3 drives the screw driver mechanism to ascend or descend; the screw driver mechanism comprises a screw suction nozzle mechanism 4, a screw tightening mechanism 5 and a linear guide rail 6.
The screwdriver base 1 is arranged on a mechanical arm of the workbench and is used for bearing a screwdriver lifting mechanism 3, a screwdriver lifting driving mechanism 2 and a screwdriver mechanism; the screw lifting driving mechanism is used for controlling the screw lifting mechanism 3 to ascend and descend so as to control the screw lifting mechanism to ascend and descend, the screw suction nozzle mechanism 4 of the screw lifting mechanism sucks screws, and the screw tightening mechanism 5 is used for tightening the screws; the linear guide rail 6 is arranged on the screwdriver base 1, and the screw suction nozzle mechanism 4 and the screw tightening mechanism 5 can slide on the linear guide rail 6.
In this embodiment, the screw lifting driving mechanism includes a screw, a driving stepping motor 24, a screw fixing seat 21, a screw supporting seat 22, and a lifting nut block 28, where the screw fixing seat 21 and the screw supporting seat 22 are respectively disposed on one side of the screwdriver base 1, a thread is disposed in the middle of the screw, the upper end of the screw is rotationally connected with the screw fixing seat 21, and the lower end of the screw is rotationally connected with the screw supporting seat 22; the driving stepping motor 24 is connected with the lead screw and drives the lead screw to rotate; the middle part of the lifting nut block 28 is provided with a screw hole matched with the screw thread of the screw rod, and one side of the lifting nut block 28 is connected with the screw driver lifting mechanism 3; the side surface of the lifting nut block 28 is provided with a plane which is in sliding contact with the screwdriver base 1.
When the embodiment is used, the motor rotates to drive the screw rod to rotate, and the screw rod rotates in the screw rod fixing seat 21 and the screw rod supporting seat 22 and cannot move up and down; when the screw rod rotates, the lifting nut block 28 slides up and down due to the matching of the threads, so that the screw driver lifting mechanism 3 is driven to move up and down.
In this embodiment, the driving stepping motor 24 is disposed in the screwdriver base 1, a driving pulley 25 is disposed on a rotating shaft of the driving stepping motor 24, a driven pulley 26 is disposed at an end of the screw, and the driving pulley 25 and the driven pulley 26 are connected by a transmission belt 27.
When the stepping motor 24 is driven to rotate, the driving pulley 25 rotates, and the driving pulley 25 rotates to enable the driven wheel to rotate through the conveyor belt, so that the lead screw is driven to rotate, and the lifting nut block 28 is regulated to rise and fall.
In this embodiment, a switch detection plate 210 is provided on the lifting nut block 28, and a set of position switches 29 are provided on the upper and lower parts of the screwdriver base 1, respectively, and the position switches 29 are used for detecting the position of the switch detection plate 210.
In the present embodiment, when the position switch 29 is used to control the ascending and descending position of the lifting nut block 28, to protect and limit the lifting nut block 28, and when the lifting nut block 28 ascends and the switch detecting plate 210 contacts the upper position switch 29, the position switch 29 turns off the driving stepping motor 24 to stop the lifting nut block 28; when the lifting nut block 28 descends, and the detection plate contacts the lower position switch 29, the position switch 29 turns off the driving stepping motor 24 to stop the lifting nut block 28 from descending.
In this embodiment, the screw driver lifting mechanism 3 includes a first slider 31 and a second slider 32, where the first slider 31 and the second slider 32 are slidably connected to the linear guide rail 6, a tightening servo motor mounting plate 33 is disposed on the first slider 31, and the tightening servo motor mounting plate 33 is connected to the screw driver mechanism; the second sliding block 32 is provided with a lifting supporting plate 34, the lifting supporting plate 34 is connected with the lifting nut block 28, and the lifting supporting plate 34 is arranged at the lower end of the tightening servo motor mounting plate 33. In this embodiment, a screwdriver limit switch 37 and a screwdriver switch plate 38 are provided on one side of the screwdriver lifting mechanism 3 for protecting a screwdriver from faults.
In use, the second slider 32 rises with the lifting nut block 28 and falls with the lifting nut block 28; the lifting support plate 34 drives the tightening servo motor mounting plate 33 to ascend or descend.
In this embodiment, a lifting buffer shaft and a compression spring are provided between the lifting pallet 34 and the tightening servo motor mounting plate 33. The lifting buffer shaft and the compression spring form certain elasticity between the lifting supporting plate 34 and the motor, and can play a role in buffering when ascending or descending, so that collision between devices is avoided, and the service life is prolonged.
In this embodiment, the screw tightening mechanism 5 includes a tightening servo motor 51, a coupling 52, a screw driver mounting shaft 53, and a screw driver 54, the screw driver lifting mechanism 3 is connected to the screw driver mounting shaft 53, the screw driver mounting shaft 53 is connected to the screw driver servo motor 51 through the coupling 52, and the screw driver 54 is connected to the screw driver mounting shaft 53.
When the screw tightening device is used, the tightening motor rotates to drive the tightening servo motor 51, the coupler 52, the screw driver mounting shaft 53 and the screw driver to rotate, so that the screw is mounted and locked.
The present embodiment is a modification of the above embodiment, and the screw nozzle mechanism 4 includes a third slider 41, a nozzle support plate 42, and an adsorption device, where the third slider 41 is slidably connected to the linear guide 6, the nozzle support plate 42 is fixed to the third slider 41, and the adsorption device is disposed on the nozzle support plate 42.
In the present embodiment, when in use, the third slider 41 slides along with the sliding of the second slider 32 on the linear guide 6, the suction nozzle carrier 42 is used to connect the suction device and the third slider 41, the suction device and the screw tightening mechanism 5 cooperate, the suction device suctions the screw, and the screw tightening mechanism 5 screws the screw in.
In this embodiment, the adsorption device includes a suction nozzle body 43, a rotating bearing 44, a sealing assembly 45, a vacuum pump and a vacuum joint 46, wherein a hollow cavity is arranged in the suction nozzle body 43, the screw driver is arranged in the cavity, the vacuum pump is communicated with the cavity through the vacuum joint 46, and the sealing assembly 45 is arranged between the screw driver 54 and the suction nozzle body 43 and is used for sealing the upper end of the cavity; the rotary bearing 44 is provided at the lower end of the sealing assembly, and connects the screw driver and the suction nozzle body 43.
When the screw mounting device is used, the upper end of the suction nozzle body 43 is sealed through the sealing component 45, the rotary bearing 44 supports the screw driver 54 to rotate in the suction nozzle body 43, the hollow pump is communicated with the cavity through the vacuum connector 46, the vacuum pump vacuumizes the cavity during adsorption, the screw is adsorbed at the lower end of the suction nozzle body 43, and the screw driver 54 rotates in the cavity to drive the screw to rotate to mount the screw.
In this embodiment, the screw suction nozzle mechanism 4 further includes a protection device, where the protection device includes a bottom end limiting block, a second lifting buffer shaft 48, a second compression spring 49, a suction nozzle limiting switch 410, and a suction nozzle switch plate 411, where the bottom end limiting block is disposed at the bottom end of the screw driver base 1 and is located below the suction nozzle support plate 42, the second lifting buffer shaft 48 is disposed on the bottom end limiting block and passes through the suction nozzle support plate 42, and the second compression spring 49 is disposed between the second lifting buffer shaft 48 and the suction nozzle support plate 42; the suction nozzle switch is arranged on the side surface of the screwdriver base 1, and the suction nozzle limit switch 410 is arranged on the suction nozzle supporting plate 42.
In this embodiment, the suction device includes a suction nozzle body 43, a rotating bearing 44, a sealing assembly 45, a vacuum pump and a vacuum joint 46, wherein a hollow cavity is disposed in the suction nozzle body 43, the screw driver is disposed in the cavity, the vacuum pump is communicated with the cavity through the vacuum joint 46, and the sealing assembly 45 is disposed between the screw driver 54 and the suction nozzle body 43 and is used for sealing the upper end of the cavity; the rotary bearing 44 is provided at the lower end of the sealing assembly, and connects the screw driver and the suction nozzle body 43.
The present embodiment is an improvement of the foregoing embodiment, the screw suction nozzle mechanism 4 further includes a protection device, where the protection device includes a bottom end limiting block, a second lifting buffer shaft 48, a second compression spring 49, a suction nozzle limiting switch 410, and a suction nozzle switch board 411, the bottom end limiting block is disposed at the bottom end of the screw driver base 1 and is located below the suction nozzle supporting board 42, the second lifting buffer shaft 48 is disposed on the bottom end limiting block and penetrates through the suction nozzle supporting board 42, and the second compression spring 49 is disposed between the second lifting buffer shaft 48 and the suction nozzle supporting board 42; the suction nozzle switch is arranged on the side surface of the screwdriver base 1, and the suction nozzle limit switch 410 is arranged on the suction nozzle supporting plate 42.
Specific examples:
firstly, a lifting mechanism descends a screw suction nozzle mechanism and a screw tightening mechanism along a linear guide rail, the screw suction nozzle mechanism adsorbs screws, and a lifting device ascends the screw suction nozzle mechanism and the screw tightening mechanism along the linear guide rail; the base is transferred to a position where the screw needs to be installed; the lifting mechanism descends the screw suction nozzle mechanism and the screw tightening mechanism along the linear guide rail, the screw suction nozzle mechanism loosens the screw, and the screw tightening mechanism tightens the screw, so that the screw tightening process is completed.
The limiting protection device can protect the position of the suction nozzle mechanism in the ascending and descending processes of the suction nozzle mechanism and avoid damage to the screw suction nozzle mechanism caused by overhigh or overlow; the overload buffer protection device plays a role in buffering, and damage caused by scram in the moving process is avoided.
When the screw suction nozzle mechanism ascends, the suction nozzle switch plate contacts with the suction nozzle limit switch at the upper part, and the lifting mechanism is closed after the suction nozzle limit switch detects the suction nozzle switch plate, so that the screw suction nozzle mechanism stops ascending;
when the suction nozzle supporting plate rises, the compression spring contracts to provide a downward buffering force for the suction nozzle supporting plate, and the suction nozzle supporting plate is protected from collision.
The rotary bearing can support the screwdriver to rotate in the suction nozzle body, the sealing component is used for sealing the connection position of the upper end of the suction nozzle body and the screwdriver, a closed environment is provided for the cavity in the suction nozzle body, and the suction device is favorable for sucking screws.
The control device can accurately control the rotation of the screwdriver through controlling the tightening servo motor, and the coupler is connected with the tightening servo motor and the screwdriver mounting shaft to play a role in buffering and damping.
A lifting buffer shaft II is arranged on the suction nozzle buffer protection device; the lifting buffer shaft II comprises a shaft body and a cap body arranged at the top end of the shaft body, the bottom end of the shaft body is fixed on the bottom end fixing plate, the middle part of the shaft body is positioned in the through hole of the suction nozzle supporting plate, and the cap body is arranged above the suction nozzle supporting plate; the upper end of the compression spring is connected with the cap body, and the lower end of the compression spring is connected with the suction nozzle supporting plate.
The spring is compressed when the suction nozzle supporting plate rises, the suction nozzle supporting plate is buffered, and the suction nozzle supporting plate is protected from collision.
The above examples are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Various modifications and improvements of the technical scheme of the present invention will fall within the protection scope of the present invention without departing from the design concept of the present invention, and the technical content of the present invention is fully described in the claims.

Claims (7)

1. The full-automatic screw locking device is characterized by comprising a screw driver base (1), a screw driver lifting driving mechanism (2), a screw driver lifting mechanism (3) and a screw driver mechanism; the screw driver lifting mechanism (3) and the screw driver mechanism are arranged on the screw driver base (1); the screw driver lifting driving mechanism (2) controls the screw driver lifting mechanism (3) to ascend or descend, and the screw driver lifting mechanism (3) drives the screw driver mechanism to ascend or descend; the screw driver mechanism comprises a screw suction nozzle mechanism (4), a screw tightening mechanism (5) and a linear guide rail (6), wherein the screw suction nozzle mechanism (4) and the screw tightening mechanism (5) are in sliding connection with the linear guide rail (6); the screwdriver base (1) is arranged on a mechanical arm of the workbench and is used for bearing the screwdriver lifting mechanism (3), the screwdriver lifting driving mechanism (2) and the screwdriver mechanism;
the screw tightening mechanism (5) comprises a tightening servo motor (51), a coupler (52), a screw driver installation shaft (53) and a screw driver (54), wherein the tightening servo motor is connected with the screw driver lifting mechanism (3), the screw driver installation shaft (53) is connected with the tightening servo motor (51) through the coupler (52), and the screw driver (54) is connected with the screw driver installation shaft (53);
the screw suction nozzle mechanism (4) comprises a third sliding block (41), a suction nozzle supporting plate (42) and an adsorption device, wherein the third sliding block (41) is in sliding connection with the linear guide rail (6), the suction nozzle supporting plate (42) is fixed on the third sliding block (41), and the adsorption device is arranged on the suction nozzle supporting plate (42);
the suction device comprises a suction nozzle body (43), a rotary bearing (44), a sealing assembly (45), a vacuum pump and a vacuum joint (46), wherein a hollow cavity is arranged in the suction nozzle body (43), the screw driver is arranged in the cavity, the vacuum pump is communicated with the cavity through the vacuum joint (46), and the sealing assembly (45) is arranged between the screw driver (54) and the suction nozzle body (43) and is used for sealing the upper end of the cavity; the rotary bearing (44) is provided at the lower end of the seal assembly and connects the screw driver and the suction nozzle body (43).
2. The full-automatic screw locking device according to claim 1, wherein the screw lifting driving mechanism comprises a screw (23), a driving stepping motor (24), a screw fixing seat (21), a screw supporting seat (22) and a lifting nut block (28), the screw fixing seat (21) and the screw supporting seat (22) are respectively arranged on one side of the screw driver base (1), threads are arranged in the middle of the screw (23), the upper end of the screw (23) is rotationally connected with the screw fixing seat (21), and the lower end of the screw (23) is rotationally connected with the screw supporting seat (22); the driving stepping motor (24) is connected with the lead screw (23) and drives the lead screw (23) to rotate; the middle part of the lifting nut block (28) is provided with a screw hole matched with the screw thread of the screw rod (23), and one side of the lifting nut block (28) is connected with a screw driver lifting mechanism (3); the side surface of the lifting nut block (28) is provided with a plane which is in sliding contact with the screwdriver base (1).
3. The full-automatic screw locking device according to claim 2, wherein the driving stepping motor (24) is arranged in the screwdriver base (1), a driving belt wheel (25) is arranged on a rotating shaft of the driving stepping motor (24), a driven belt wheel (26) is arranged at the end part of the screw rod, and the driving belt wheel (25) and the driven belt wheel (26) are connected through a transmission belt (27).
4. A fully automatic screw locking device according to claim 3, wherein a switch detection plate (210) is arranged on the lifting nut block (28), a group of position switches (29) are respectively arranged at the upper part and the lower part of the screwdriver base (1), and the position switches (29) are used for detecting the position of the switch detection plate (210).
5. The full-automatic screw locking device according to claim 4, wherein the screw driver lifting mechanism (3) comprises a first sliding block (31) and a second sliding block (32), the first sliding block (31) and the second sliding block (32) are in sliding connection with the linear guide rail (6), a tightening servo motor mounting plate (33) is arranged on the first sliding block (31), and the tightening servo motor mounting plate (33) is connected with the screw tightening mechanism (5); the lifting support plate (34) is arranged on the second sliding block (32), the lifting support plate (34) is connected with the lifting nut block (28), and the lifting support plate (34) is arranged at the lower end of the tightening servo motor mounting plate (33).
6. The full-automatic screw locking device according to claim 5, wherein a lifting buffer shaft I (35) and a compression spring I (36) are arranged between the lifting supporting plate (34) and the tightening servo motor mounting plate (33).
7. The full-automatic screw locking device according to claim 1, wherein the screw suction nozzle mechanism (4) further comprises a protection device, the protection device comprises a bottom end limiting block, a lifting buffer shaft II (48), a compression spring II (49), a suction nozzle limiting switch (410) and a suction nozzle switching plate (411), the bottom end limiting block is arranged at the bottom end of the screw driver base (1) and below the suction nozzle supporting plate (42), the lifting buffer shaft II (48) is arranged on the bottom end limiting block and penetrates through the suction nozzle supporting plate (42), and the compression spring II (49) is arranged between the lifting buffer shaft II (48) and the suction nozzle supporting plate (42); the suction nozzle limit switch is arranged on the side face of the screwdriver base (1), and the suction nozzle limit switch (410) is arranged on the suction nozzle supporting plate (42).
CN201710833341.0A 2017-09-15 2017-09-15 Full-automatic screw locking device Active CN107350791B (en)

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CN107350791B true CN107350791B (en) 2023-07-07

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108971953A (en) * 2018-07-12 2018-12-11 南京埃斯顿机器人工程有限公司 It can lock or unscrew simultaneously the mechanism of screw and nut
CN109103799A (en) * 2018-10-17 2018-12-28 镇江上电电气有限公司 A kind of tooling of switch cabinet assembling
CN109175987B (en) * 2018-11-01 2023-09-05 巨力自动化设备(浙江)有限公司 Automatic tightening mechanism for generator belt pulley
CN114799841A (en) * 2022-04-11 2022-07-29 东莞市精心自动化设备科技有限公司 Locking mechanism and full-automatic locking machine thereof

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