An automated assembly and disassembly device for threaded plugs.

Abstract

This invention relates to an automated auxiliary equipment for the installation and removal of plugs in assembly line operations. Specifically, it relates to an automated installation and removal device for threaded plugs, comprising: a frame, including a machine frame, a turntable mounting plate on the machine frame, a precision turntable above the turntable mounting plate, a large turntable above the precision turntable, and multiple rotating magazine assemblies evenly distributed on the upper surface of the large turntable. Each rotating magazine assembly includes a rotating sleeve magazine, which is placed in the central hole of a guide plate, and a compression spring is fitted on the outer diameter of the rotating sleeve magazine. Below the large turntable are two electric screwdrivers with torque adjustment, and the two electric screwdrivers rotate in opposite directions. When the electric screwdrivers are used in conjunction with any two rotating sleeve magazines, they form an installation station and a removal station. This invention avoids additional manual labor during use, and only requires adjustment of the shape of the rotating sleeve magazine to adapt to the automatic installation and removal of various special-shaped spiral plugs. It can be widely used as a general-purpose auxiliary machine for the installation and removal of threaded plugs.

Description

Technical Field

[0001] This invention relates to an automated auxiliary equipment for installing and removing plugs in assembly line operations, specifically an automated device for installing and removing threaded plugs. Background Technology

[0002] With the continuous development of my country's economy, there are more and more production lines. In production lines or other production processes, it is often necessary to install threaded plugs in the middle of the process and then remove the plugs after completing a specific process. For example, on the automatic roller electroplating line, holes that do not need to be electroplated need to be plugged during electroplating, and the plugs are removed after electroplating. This work requires a specialist to manually install and remove the plugs, which is time-consuming and labor-intensive. Moreover, the tightening torque is difficult to control, which adds extra manpower and seriously hinders the implementation of the plug-installed electroplating process. Summary of the Invention

[0003] This invention provides an automatic tightening and unscrewing device for quick installation and removal of spiral plugs with adjustable torque. With this device, loading / unloading personnel or robots only need to briefly pass the device over the plug or other similar parts before loading and after unloading for a few seconds to complete the installation and removal of plugs or other similar parts.

[0004] The technical solution provided by this invention: an automated assembly and disassembly device for threaded connection plugs, comprising:

[0005] The frame includes a machine frame, on which a turntable mounting plate is provided, a precision turntable is provided above the turntable mounting plate, and a large turntable is provided at the output end of the precision turntable;

[0006] A rotating magazine assembly is provided, consisting of several units, which are evenly and circumferentially arranged on the surface of a large turntable. Each rotating magazine assembly includes a rotating sleeve magazine. A guide plate is provided above the rotating sleeve magazine, and the rotating sleeve magazine is placed in the central hole of the guide plate. A compression spring is fitted on the outer diameter of the rotating sleeve magazine.

[0007] Two electric screwdrivers with torque adjustment are provided, and the two electric screwdrivers rotate in opposite directions. They are located below the large turntable. When the electric screwdrivers are combined with the rotating sleeve in any two rotating sleeve combinations, they form a forward-rotating screw-on station and a reverse-rotating screw-off station. Each screw-on station and screw-off station is equipped with a position detection sensor, and the position detection sensor is electrically connected to the precision turntable. When the position detection sensor detects that the electric screwdriver is completely separated from the rotating sleeve, the position detection sensor sends an electrical signal to the precision turntable, and the precision turntable drives the large turntable to rotate. A reversing switch is electrically connected to the two electric screwdrivers, and the reversing switch can simultaneously switch the rotation direction of the two electric screwdrivers.

[0008] Furthermore, the large turntable rotates at a specific angle via a precision turntable; the number of rotating storage units matches the number of plugs to be assembled and disassembled, and the rotating storage units are used to temporarily store the plugs, allowing the plugs to circulate continuously during operation.

[0009] Furthermore, the shape of the inner hole of the rotating sleeve matches the shape of the plug. The rotating sleeve is provided with two torque grooves, the size of which is adapted to the protrusion on the plug. When the rotating sleeve rotates, it drives the plug to rotate. The torque grooves are used to make the plug screw in and out. A sliding bearing is provided between the rotating sleeve and the guide plate. Both ends of the guide plate are provided with upper guide rods, which are mounted on the large turntable through a first linear bearing.

[0010] Furthermore, the electric screwdriver includes a first electric screwdriver that rotates in a forward direction and a second electric screwdriver that rotates in a reverse direction. One end of the first electric screwdriver and the second electric screwdriver is provided with a power head that is adapted to the bottom of the rotating sleeve. The two power heads and their corresponding electric screwdrivers are respectively located below any two rotating sleeves. The first electric screwdriver and the second electric screwdriver are each provided with a trigger. Each trigger is provided with a lower guide rod above it. The lower guide rod is mounted on the turntable mounting plate through a second linear bearing.

[0011] Furthermore, the upper end of the upper guide rod is provided with a limiting nut or a sliding sleeve with a stop screw. The distance between the guide plate and the large turntable is adjusted by the compression spring and the limiting nut or sliding sleeve at the upper end of the upper guide rod. When the limiting nut or sliding sleeve of the upper guide rod is adjusted up and down, the guide plate drives the rotating sleeve magazine to be adjusted up and down by the compression spring, thereby adjusting the gap between the rotating sleeve magazine and the power head.

[0012] Furthermore, the upper part of the lower guide rod is aligned with the upper guide rod, and an adjustment gap is provided between the lower guide rod and the upper guide rod. This gap is used to control the start and stop timing of the electric wrench. At the bottom of each rotating sleeve, an inner octagonal head matching the power head is also provided to transmit torque. The torque groove and the octagonal head opening at the lower end of the rotating sleeve are both chamfered, which allows the plug and the power head to smoothly enter the rotating sleeve and engage with it.

[0013] Furthermore, the triggers of both the first and second electric screwdrivers can automatically spring back, the power heads of the first and second electric screwdrivers rotate in opposite directions, and the torque of the screw-on / screw-off station is greater than the torque of the screw-on / installation station.

[0014] The beneficial effects of this invention are as follows: This invention provides an automated assembly and disassembly device for threaded plugs, which effectively solves the problem of quickly assembling and disassembling threaded plugs in continuous production lines, such as roller electroplating processes. Operators or robotic arms only need to add an alignment and pressing action to complete the task, avoiding additional manual labor. Furthermore, by simply adjusting the shape of the rotating sleeve, it can adapt to the automatic assembly and disassembly of various special-shaped spiral plugs, and can be widely used as a general-purpose auxiliary machine for threaded plug assembly and disassembly. It also has the following advantages:

[0015] First, the use of an adjustable torque electric screwdriver as the power source ensures controllable engagement torque, thus improving product quality. Furthermore, the equipment is universal, readily available, and easy to implement.

[0016] Second, the plugs are continuously recycled during the production process, enabling the production of a large number of workpieces with a small number of plugs. This not only saves a lot of plugs but also avoids the need for equipment such as vibrating arrangement machines to feed the plugs at the front end.

[0017] Third, during application, it hardly changes operating habits and workflows. Attached Figure Description

[0018] 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 of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a cross-sectional view of the specific structure of the present invention;

[0020] Figure 2 This is a top view of the present invention;

[0021] Figure 3 This is a diagram of the combination of plugs in the transfer warehouse. Detailed Implementation

[0022] 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.

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] Since the installation and removal of threaded plugs require manual labor, which is time-consuming and labor-intensive, and the tightening torque is difficult to control, it also adds extra manpower and seriously hinders the implementation of the electroplating process for adding plugs. Therefore, the inventors of this application provide an automated installation and removal device for threaded plugs. The device rationally arranges and cooperates a mature precision turntable with two electric screwdrivers with torque adjustment. This not only avoids the need for additional manual labor, but also allows for the automatic installation and removal of various special-shaped spiral plugs by simply adjusting the shape of the rotating sleeve. It can be widely used as a general-purpose auxiliary machine for the installation and removal of threaded plugs.

[0025] like Figure 1-3 As shown, an automated assembly and disassembly device for threaded plugs includes: a frame, a rotating magazine assembly, an electric screwdriver, and a reversing switch.

[0026] In this embodiment, as Figure 1 As shown, the frame includes a frame 3, a turntable mounting plate 2 is provided on the frame 3, a precision turntable 1 is provided above the turntable mounting plate 2, and a large turntable 4 is provided at the output end of the precision turntable 1; the large turntable 4 rotates at a specific angle through the precision turntable 1.

[0027] Based on the above embodiments, the precision turntable 1 is driven by a servo motor or a stepper motor.

[0028] In this embodiment, there are several rotating storage assemblies, which are evenly arranged circumferentially on the surface of the large turntable 4. Each rotating storage assembly includes a rotating sleeve 5. A guide plate 8 is provided above the rotating sleeve 5, and the rotating sleeve 5 is placed in the central hole of the guide plate 8. A compression spring 7 is sleeved on the outer diameter of the rotating sleeve 5. The number of rotating storage assemblies matches the number of plugs 17 that are to be assembled and disassembled. The rotating storage assemblies are used to temporarily store the plugs 17, so that the plugs 17 are continuously circulated during the operation, avoiding the need to install an additional plug conveying mechanism.

[0029] The inner hole of the rotating sleeve 5 is matched with the shape of the plug 17. The rotating sleeve 5 is provided with two torque grooves 19. The size of the torque grooves 19 is adapted to the protrusions 18 on the plug 17. When the rotating sleeve 5 rotates, the plug 17 is driven to rotate through the torque grooves 19 and the protrusions 18. The torque grooves 19 are used to make the plug 17 rotate in and out. A sliding bearing 6 is provided between the rotating sleeve 5 and the guide plate 8. Both ends of the guide plate 8 are provided with upper guide rods 9. The upper guide rods 9 are mounted on the large turntable 4 through the first linear bearing 10.

[0030] Based on the above embodiments, the number of rotating magazine assemblies is matched with the number of workpieces on the electroplating flybar; when the plug 17 is pressed down in the rotating magazine 5, it drives the guide plate 8 to compress the compression spring 7 downward, and at the same time guides it through the upper guide rod 9 and the first linear bearing 10, so that the rotating magazine 5 moves downward.

[0031] In this embodiment, two electric screwdrivers with torque adjustment are provided, and the two electric screwdrivers rotate in opposite directions. They are located below the large turntable 4. When the electric screwdrivers are combined with the rotating sleeve 5 in any two rotating sleeve combinations, they form a forward-rotating screw-on station and a reverse-rotating screw-off station. Each screw-on station and the screw-off station is equipped with a position detection sensor 16, and the position detection sensor 16 is electrically connected to the precision turntable 1. When the position detection sensor 16 detects that the electric screwdriver and the rotating sleeve 5 are completely separated, the position detection sensor 16 sends an electrical signal to the precision turntable 1, and the precision turntable 1 drives the large turntable 4 to rotate. The reversing switch is electrically connected to the two electric screwdrivers, and the reversing switch can simultaneously switch the rotation direction of the two electric screwdrivers.

[0032] The electric screwdriver includes a first electric screwdriver 11 that rotates in a forward direction and a second electric screwdriver 12 that rotates in a reverse direction. One end of the first electric screwdriver 11 and the second electric screwdriver 12 is provided with a power head 13 that is adapted to the bottom of the rotating sleeve 5. The two power heads 13 and their corresponding electric screwdrivers are respectively located below any two rotating sleeves 5. The first electric screwdriver 11 and the second electric screwdriver 12 are each provided with a trigger. Each trigger is provided with a lower guide rod 14 above it. The lower guide rod 14 is mounted on the turntable mounting plate 2 through a second linear bearing 15. The triggers of the first electric screwdriver 11 and the second electric screwdriver 12 can automatically rebound. The first electric screwdriver 11 and the second electric screwdriver 12 rotate in opposite directions. The torque of the screwing-off station is greater than the torque of the screwing-on station.

[0033] Based on the above embodiments, the triggers of both the first electric screwdriver 11 and the second electric screwdriver 12 can automatically spring back; the two power heads 13 are respectively located directly below the two rotating sleeves 5. When the plug 17 presses down on the rotating sleeve 5, the bottom of the rotating sleeve 5 engages with the top of the power head 13; the power head 13 of the first electric screwdriver 11 drives the rotating sleeve 5 to rotate forward, thereby driving the plug 17 to be installed on the roller; the power head 13 of the second electric screwdriver 12 drives the rotating sleeve 5 to rotate in reverse. Since the torque of the unscrewing station is greater than the torque of the rotating station, that is, the torque of the second electric screwdriver 12 is greater than the torque of the first electric screwdriver 11, the plug 17 can be rotated off the roller; since the first electric screwdriver 11 and the second electric screwdriver 12 with adjustable torque are used as power sources, the engagement torque is controllable, which improves product quality and makes the equipment universal, easy to obtain and implement.

[0034] In this embodiment, the upper part of the lower guide rod 14 is aligned with the upper guide rod 9, and an adjustment gap is provided between the lower guide rod 14 and the upper guide rod 9. This gap is used to control the start and stop timing of the electric screwdriver's trigger. At the bottom of each rotating sleeve 5, an inner octagonal head matching the power head 13 is also provided to transmit torque. The torque groove 19 and the octagonal head opening at the lower end of the rotating sleeve 5 are both chamfered, which allows the plug 17 and the power head 13 to smoothly enter the rotating sleeve 5 and engage with the rotating sleeve 5.

[0035] The device described in this invention includes a torsion groove and an octagonal head, but is not limited to other force transmission forms based on this concept, such as a flat hexagonal head.

[0036] Based on the above embodiments, when the plug 17 is screwed in, the plug 17 presses down, causing the rotating magazine assembly to press down. The upper guide rod 9 moves down and runs for a distance before pressing down the lower guide rod 14. The lower guide rod 14 then lowers the trigger of the first electric screwdriver 11, causing the power head 13 of the first electric screwdriver 11 to start rotating slowly. At the same time, the rotating magazine 5 presses down and engages with the power head 13. When the rotating magazine 5 gradually descends to its lowest position, the trigger of the first electric screwdriver 11 is also gradually pressed down completely. The power head 13 of the first electric screwdriver 11 gradually accelerates to its highest speed and rotates, driving the rotating magazine 5 and the plug 17 inside it, so that the plug 17 is quickly screwed into the bottom hole of the roller.

[0037] In one embodiment, a limiting nut is provided at the upper end of the upper guide rod 9. The distance between the guide plate 8 and the large turntable 4 is adjusted by the compression spring 7 and the limiting nut at the upper end of the upper guide rod 9. When the limiting nut of the upper guide rod 9 is adjusted up and down, the guide plate 8 drives the rotating sleeve 5 to be adjusted up and down by the compression spring 7, thereby adjusting the gap between the rotating sleeve 5 and the power head 13.

[0038] In another embodiment, the upper end of the upper guide rod 9 is provided with a sliding sleeve. The distance between the guide plate 9 and the large turntable 4 is adjusted by the compression spring 7 and the sliding sleeve at the upper end of the upper guide rod 9. When the sliding sleeve of the upper guide rod 9 is adjusted up and down, the guide plate 8 drives the rotating sleeve 5 to be adjusted up and down by the compression spring 7, thereby adjusting the gap between the rotating sleeve 5 and the power head 13.

[0039] In another embodiment, the upper end of the upper guide rod 9 is provided with a stop screw. The distance between the guide plate 9 and the large turntable 4 is adjusted by the compression spring 7 and the stop screw at the upper end of the upper guide rod 9. When the stop screw of the upper guide rod 9 is adjusted up and down, the guide plate 8 drives the rotating sleeve 5 to be adjusted up and down by the compression spring 7, thereby adjusting the gap between the rotating sleeve 5 and the power head 13.

[0040] This invention discloses an automated assembly and disassembly device for threaded plugs, providing an adjustable torque automatic tightening and unscrewing equipment for quickly assembling and disassembling spiral plugs. With this equipment, loading / unloading personnel or robots only need to use the equipment for a few seconds before loading and after unloading to complete the assembly and disassembly of plugs or other similar parts. The following further illustrates the assembly and disassembly of roller electroplating plugs: During roller electroplating, based on process requirements, a plug needs to be screwed into the guide hole at the tail of the roller, and then removed after electroplating. The roller and plug can be either right-handed or left-handed. In the initial working stage, a plug 17 is placed in each rotating sleeve 5. The rotating sleeve 5 is held at the top position under the action of the compression spring 7. At this time, the large turntable 4, driven by the precision turntable 1, can rotate one angle at a time, making each... The rotating sleeve 5 can accurately stop directly above the power heads 13 of the first electric screwdriver 11 and the second electric screwdriver 12. When a rotating sleeve 5 is directly above the power head 13 of the first electric screwdriver 11, the roller is held manually or by a robotic arm, and the lower hole of the roller is aligned with the plug and inserted and pressed down. At this time, the rotating sleeve 5 drives the upper guide rod 9 to move downward against the spring force through the guide plate 8. After a certain distance of idle travel, the lower end of the upper guide rod 9 first connects with the upper end of the lower guide rod 14. When the lower guide rod 14 is engaged, it drives the trigger of the first electric screwdriver 11 downwards. The power head 13 of the first electric screwdriver 11 begins to rotate slowly. At the same time, the rotating sleeve 5 is pressed down and engages with the power head 13. As the rotating sleeve 5 gradually descends to its lowest position, the trigger of the first electric screwdriver 11 is also gradually fully pressed down. The power head 13 of the first electric screwdriver 11 gradually accelerates to its maximum speed, driving the rotating sleeve 5 and the plug 17 inside it. This causes the plug 17 to quickly screw into the bottom hole of the roller, reaching the set torque. Then, the first electric screwdriver 11 automatically slips, lifting the roller. The plug is tightened onto the roller with the specified torque. Simultaneously, due to the action of the compression spring 7, as the roller is lifted, the rotating sleeve 5 is lifted and disengaged from the power head 13. After the rotating sleeve 5 is completely disengaged from the power head 13, the upper guide rod 9 and the lower guide rod 14 are completely disengaged, and the trigger of the first electric screwdriver 11 automatically springs back, stopping the rotation of the power head 13. At the same time, the position sensor 16 sends an electrical signal to control the precision turntable 1 to rotate and enter the next work station. Finally, the above actions are repeated until all the plugs in a set are screwed into the roller and carried away by the roller to enter the next process cycle. At this time, the screwing work is completed. When the screwing work is completed, the rotating sleeve 5 of the present invention is completely empty, and the screwing and unscrewing work of the next set of electroplated rollers can begin. The screwing and unscrewing action is performed on the second electric screwdriver 12, and the operation process is the same as the screwing and unscrewing. After the screwing and unscrewing is completed, the rotating sleeve is filled with plugs again, and a new round of screwing and unscrewing can begin, thus continuously cycling.Throughout the assembly and disassembly process, operators or robotic arms only need to add one alignment, pressing down, and moving up action to complete the task, avoiding additional manual labor. Furthermore, by simply adjusting the shape of the rotating sleeve, it can adapt to the automatic assembly and disassembly of various special-shaped spiral plugs. It can be widely used as a general-purpose auxiliary machine for threaded plug assembly and disassembly. Moreover, the plugs are continuously recycled during the production process, enabling the production of a large number of workpieces with a small number of plugs. This not only saves a significant amount of plugs but also avoids the need for equipment such as vibrating sorting machines to feed the plugs at the front end.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automated assembly and disassembly device for threaded connection plugs, characterized in that: include: The frame includes a machine frame, on which a turntable mounting plate is provided, and above the turntable mounting plate is a precision turntable, which is driven by a servo motor or a stepper motor, and the output end of the precision turntable is provided with a large turntable; A rotating magazine assembly is provided, consisting of several units, which are evenly and circumferentially arranged on the surface of a large turntable. Each rotating magazine assembly includes a rotating sleeve magazine. A guide plate is provided above the rotating sleeve magazine, and the rotating sleeve magazine is placed in the central hole of the guide plate. A compression spring is fitted on the outer diameter of the rotating sleeve magazine. Two electric screwdrivers with torque adjustment are provided, and the two electric screwdrivers rotate in opposite directions. They are located below the large turntable. When the electric screwdrivers are combined with the rotating sleeve in any two rotating magazine combinations, they form a forward-rotating screw-on station and a reverse-rotating screw-off station. Each screw-on station and screw-off station is equipped with a position detection sensor, and the position detection sensor is electrically connected to the precision turntable. When the position detection sensor detects that the electric screwdriver is completely separated from the rotating sleeve, the position detection sensor sends an electrical signal to the precision turntable, and the precision turntable drives the large turntable to rotate. A reversing switch is electrically connected to the two electric screwdrivers, and the reversing switch can simultaneously switch the rotation direction of the two electric screwdrivers. The inner hole of the rotating sleeve is shaped to match the shape of the plug. The rotating sleeve has two torque grooves, the size of which is adapted to the protrusion on the plug. When the rotating sleeve rotates, it drives the plug to rotate. The torque grooves are used to make the plug screw in and out. A sliding bearing is provided between the rotating sleeve and the guide plate. Both ends of the guide plate are provided with upper guide rods, which are mounted on the large turntable through a first linear bearing. The electric screwdriver includes a first electric screwdriver that rotates in a forward direction and a second electric screwdriver that rotates in a reverse direction. One end of the first electric screwdriver and the second electric screwdriver is provided with a power head that is adapted to the bottom of the rotating sleeve. The two power heads and their corresponding electric screwdrivers are respectively located below any two rotating sleeves. The first electric screwdriver and the second electric screwdriver are each provided with a trigger. Each trigger is provided with a lower guide rod above it. The lower guide rod is mounted on the turntable mounting plate through a second linear bearing.

2. The automated assembly and disassembly device for a threaded connection plug according to claim 1, characterized in that: The large turntable rotates at a specific angle via a precision turntable; the number of rotating storage units matches the number of plugs to be assembled and disassembled, and the rotating storage units are used to temporarily store the plugs, allowing the plugs to circulate continuously during operation.

3. The automated assembly and disassembly device for a threaded connection plug according to claim 1, characterized in that: The upper end of the upper guide rod is provided with a limiting nut or a sliding sleeve with a stop screw. The distance between the guide plate and the large turntable is adjusted by the compression spring and the limiting nut or sliding sleeve at the upper end of the upper guide rod. When the limiting nut or sliding sleeve of the upper guide rod is adjusted up and down, the guide plate drives the rotating sleeve magazine to be adjusted up and down by the compression spring, thereby adjusting the gap between the rotating sleeve magazine and the power head.

4. The automated assembly and disassembly device for a threaded connection plug according to claim 1, characterized in that: The upper part of the lower guide rod is aligned with the upper guide rod, and an adjustment gap is provided between the lower guide rod and the upper guide rod. This gap is used to control the start and stop timing of the electric wrench. At the bottom of each rotating sleeve, there is also an inner octagonal head that matches the power head and is used to transmit torque. The torque groove and the octagonal head opening at the lower end of the rotating sleeve are both chamfered, which allows the plug and the power head to smoothly enter the rotating sleeve and engage with it.

5. An automated assembly and disassembly device for a threaded connection plug according to claim 4, characterized in that: Both the triggers of the first and second electric screwdrivers can automatically spring back. The power heads of the first and second electric screwdrivers rotate in opposite directions. The torque of the screw-on / screw-off station is greater than the torque of the screw-on / installation station.

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