Nail suction sleeve and nail suction device

Abstract

The embodiment of the utility model provides a nail suction sleeve and a nail suction device. The nail suction sleeve comprises a connector end and a mounting end. The connector end is provided with an air channel connector, and one end of the air channel connector is open and used for being communicated with a suction device. The installation end is provided with an installation groove, at least part of the area of the installation groove is used for installing the magnetic attraction part, and the installation groove is communicated with the air channel connector so that the screw can be installed to the installation end under the action of at least one of the magnetic attraction part and the suction device. On one hand, the negative pressure generated by the suction device can enhance the adsorption force to the screw, so that the screw can be tightly mounted at the mounting end. And on the other hand, magnetic attraction is generated on the screw through the magnetic attraction piece, the gravity and external interference can be overcome, the screw attraction efficiency is further improved, the attraction force of the screw attraction sleeve on the screw is improved, the screw falling phenomenon is effectively avoided, and the operation safety and reliability are improved. The screw suction sleeve is high in screw suction capacity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of screw tightening, and particularly relates to a screw suction sleeve and a screw suction device. BACKGROUND

[0002] With the development of industrial automation, automatic screw tightening equipment is applied more and more widely in production and gradually replaces traditional manual operation. In the automatic screw tightening equipment, a screw suction device is a crucial component, and its performance directly affects the screw grabbing and positioning accuracy.

[0003] However, the screw suction sleeve in the related art has weak adsorption force on the screw and cannot well prevent the screw from falling off. CONTENT OF THE INVENTION

[0004] The present application provides a screw suction sleeve and a screw suction device with strong adsorption force on the screw.

[0005] The technical scheme of the present application is implemented as follows:

[0006] The present application provides a screw suction sleeve, which comprises:

[0007] An interface end, which has an air channel interface, one end of the air channel interface being open for communication with a suction device;

[0008] A mounting end, which has a mounting groove, at least part of the area of the mounting groove being used for mounting a magnetic attraction member, and the mounting groove being in communication with the air channel interface, so that the screw is mounted to the mounting end under the action of at least one of the magnetic attraction member and the suction device.

[0009] In one embodiment, part of the area of the mounting groove is used for mounting the magnetic attraction member, and another part of the area is used for mounting a screw driver with an air hole, the mounting groove being in communication with the air hole, so that the screw is mounted to the mounting end through the screw driver.

[0010] In one embodiment, part of the area of the groove wall of the mounting groove protrudes into the groove to form a clamping portion, and the clamping portion is clamped with the screw driver.

[0011] In one embodiment, the screw suction sleeve comprises a plurality of clamping portions, and each clamping portion is arranged at intervals along the circumference of the mounting groove.

[0012] In one embodiment, the end of the clamping portion in the protruding direction is arc-shaped.

[0013] In an embodiment, the mounting groove comprises a first sub-groove and a second sub-groove, the first sub-groove is located on one side of the second sub-groove close to the interface end, and is in communication with the airway interface and the second sub-groove respectively, the first sub-groove is used for mounting the magnetic member, and the second sub-groove is used for mounting the screw driver; and / or,

[0014] The screw driver is a hole hex spoon.

[0015] In an embodiment, the screw sleeve comprises a gasket, the mounting groove comprises a first sub-groove and a third sub-groove, the third sub-groove is located on one side of the first sub-groove away from the airway interface, and the first sub-groove is in communication with the airway interface and the third sub-groove respectively, the first sub-groove is used for mounting the magnetic member, and the third sub-groove is used for mounting the gasket.

[0016] In an embodiment, the screw sleeve comprises a barrel and a self-repairing layer, at least a part of the surface of the barrel is provided with the self-repairing layer, and the self-repairing layer is a photo-thermal, pH-responsive self-repairing anticorrosive coating.

[0017] The second aspect of the embodiments of the present application provides a screw suction device, the screw suction device comprising a suction device, a magnetic member and the screw sleeve described above, the suction device is in communication with one end of the airway interface, the magnetic member is mounted in the mounting groove, so that the screw is installed to the mounting end under the action of at least one of the magnetic member and the suction device.

[0018] In an embodiment, the screw suction device further comprises a connecting rod and a driving bit, the driving bit has airways in communication with the airway interface and the suction device respectively, the wall body of the interface end has a first connecting hole, a part of the airway of the driving bit extends into the airway interface, and a second connecting hole in communication with the first connecting hole, the connecting rod is arranged in the first connecting hole and the second connecting hole, so that the screw sleeve and the driving bit are drivingly connected.

[0019] The embodiments of the present application have the following beneficial effects:

[0020] The embodiment of the present application provides a screw suction sleeve and a screw suction device, the screw suction sleeve comprises an interface end and a mounting end. The interface end is provided with an air channel interface, one end of the air channel interface is open, and the air channel interface is used for being communicated with a suction device. The mounting end is provided with a mounting groove, at least part of the mounting groove is used for mounting a magnetic suction piece, and the mounting groove is communicated with the air channel interface, so that the screw is mounted to the mounting end under the action of at least one of the magnetic suction piece and the suction device. In one aspect, the negative pressure generated by the suction device can enhance the adsorption force on the screw, so that the screw can be closely mounted to the mounting end. In another aspect, the magnetic force generated by the magnetic suction piece on the screw can overcome the gravity and external interference, further improve the efficiency of the screw suction, improve the adsorption force of the screw suction sleeve on the screw, effectively avoid the occurrence of the screw dropping phenomenon, and improve the safety and reliability of operation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 FIG. 1 is a structural schematic diagram of a screw suction sleeve provided by the embodiment of the present application;

[0022] Figure 2 FIG. 2 is a structural schematic diagram of a first perspective of the screw suction sleeve in FIG. 1; Figure 1

[0023] Figure 3 FIG. 3 is a structural schematic diagram of a second perspective of the screw suction sleeve in FIG. 1; Figure 1

[0024] Figure 4 FIG. 4 is a structural schematic diagram of a third perspective of the screw suction sleeve in FIG. 1; Figure 1

[0025] Figure 5 FIG. 5 is a structural schematic diagram of a fourth perspective of the screw suction sleeve in FIG. 1; Figure 1

[0026] Figure 6 FIG. 6 is a structural schematic diagram of a screw suction device provided by the embodiment of the present application;

[0027] Figure 7 FIG. 7 is a schematic diagram of a typical problem of a screw suction device in the related art being affected by impurities, wherein the shaded part represents iron filings, aluminum filings, dust and other impurities;

[0028] Figure 8 FIG. 8 is a schematic diagram of a corrosion protection mechanism of a self-repairing layer provided by the embodiment of the present application, wherein the dot represents an inhibitor;

[0029] Figure 9 FIG. 9 is a schematic diagram of a recovery mechanism of the self-repairing layer provided by the embodiment of the present application, wherein the bisphenol A resin in the self-repairing layer is activated under light conditions, and the dot represents an inhibitor;

[0030] Figure 10 ​​​​FIG. 1 is a schematic diagram of a recovery mechanism of a self-repairing layer provided by an embodiment of the present application, which shows a self-repairing process of the self-repairing layer, and the dots in the figure represent corrosion inhibitors;

[0031] Figure 11 FIG. 6 is monthly tightening failure ratio information.

[0032] Reference Signs List

[0033] 10, pin suction sleeve; 10a, interface end; 10b, mounting end; 10c, mounting groove; 10ca, first sub-groove; 10cb, second sub-groove; 10cc, third sub-groove; 10d, first connecting hole; 10e, airway interface; 30, clamping part; 40, pin feeding tube; 50a, vertical slide; 60, screw; 70, magnetic attraction piece. DETAILED DESCRIPTION

[0034] In order to make the objects, technical solutions and advantages of the present application clearer, the following will further describe the present application with reference to the drawings, and the described embodiments should not be regarded as limiting the present application, and all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0035] In the following description, "some embodiments" are related to a subset of all possible embodiments, but it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0036] In the description of the embodiments of the present application, the technical terms "first", "second", "third" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is two and more than two, unless otherwise explicitly and specifically limited.

[0037] Unless otherwise defined, all technical and scientific terms used in the embodiments of the present application have the same meanings as those commonly understood by those skilled in the art. The terms used in the embodiments of the present application are only for the purpose of describing the embodiments of the present application, and are not intended to limit the present application.

[0038] An embodiment of the present application provides a pin suction sleeve 10, please refer to Figures 1 to 5 The pin suction sleeve 10 includes an interface end 10a and a mounting end 10b.

[0039] The interface end 10a has an airway interface 10e, one end of which is open for communication with a suction device.

[0040] The installation end 10b has an installation groove 10c, at least a part of the installation groove 10c is used for installing the magnetic member 70, and the installation groove 10c is communicated with the air channel interface 10e, so that the screw 60 is installed to the installation end 10b under the action of at least one of the magnetic member 70 and the suction device.

[0041] Another embodiment of the present application provides a screw suction device, the screw suction device comprises a suction device, a magnetic member 70 and the screw suction sleeve 10 described in any embodiment of the present application, the suction device is communicated with one end of the air channel interface 10e, and the magnetic member 70 is installed in the installation groove 10c, so that the screw 60 is installed to the installation end 10b under the action of at least one of the magnetic member 70 and the suction device.

[0042] Specifically, the interface end 10a refers to an end of the screw suction sleeve 10 communicated with the suction device.

[0043] The suction device is used to provide suction force to adsorb the screw, and the specific structure type is not limited. For example, the suction device is a vacuum generator.

[0044] The air channel interface 10e is located at the interface end 10a, and the screw suction sleeve 10 is communicated with the suction device through the air channel interface 10e, so that the suction device can form negative pressure inside the screw suction sleeve 10.

[0045] The installation end 10b refers to an end of the screw suction sleeve 10 used for fixing the screw 60.

[0046] The installation end 10b has an installation groove 10c, and the magnetic member 70 is arranged in the installation groove 10c. Thus, by arranging the magnetic member 70, the suction force on the screw 60 can be enhanced, and the negative pressure value generated by the suction device can be prevented from being too low to cause the screw 60 to fall off.

[0047] The installation groove 10c is communicated with the air channel interface 10e, so that the negative pressure formed inside the screw suction sleeve 10 can adsorb the screw 60 to the installation end 10b of the screw suction sleeve 10.

[0048] The magnetic member 70 refers to a component with magnetism, which can adsorb the screw 60 to the installation end 10b of the screw suction sleeve 10.

[0049] For example, the magnetic member 70 is a permanent magnet.

[0050] The screw 60 is installed to the installation end 10b under the action of at least one of the magnetic attraction member 70 and the suction device, which means that the screw 60 can be installed to the installation end 10b only by the magnetic force generated by the magnetic attraction member 70, or only by the negative pressure environment created by the suction device in the suction sleeve 10, or by the magnetic force of the magnetic attraction member 70 and the negative pressure of the suction device together.

[0051] The screw 60 is installed to the installation end 10b under the action of at least one of the magnetic attraction member 70 and the suction device, which means that the screw 60 can be installed to the installation end 10b only by the magnetic force generated by the magnetic attraction member 70, or only by the negative pressure environment created by the suction device in the suction sleeve 10, or by the magnetic force of the magnetic attraction member 70 and the negative pressure of the suction device together.

[0052] For example, the screw 60 is in contact with the installation end 10b to be directly installed to the installation end 10b.

[0053] For another example, the screw 60 is indirectly installed to the installation end 10b through other structures.

[0054] For example, a part of the installation groove 10c is used to install the magnetic attraction member 70, and another part is used to install the screw driver with air holes, and the installation groove 10c is in communication with the air holes to enable the screw 60 to be installed to the installation end 10b through the screw driver. In this way, on the one hand, the screw 60 can be stably adsorbed by the magnetic attraction member 70, so that the screw 60 can be stably connected with the screw driver. On the other hand, by the communication between the screw driver with air holes and the installation groove 10c, the negative pressure generated by the suction device can adsorb the screw 60 on the screw driver, thereby further improving the adsorption force of the screw driver on the screw 60.

[0055] Specifically, the screw driver refers to a component for connecting with the screw 60.

[0056] The structure type of the screw driver is not limited.

[0057] For example, the screw driver is a hole six-pronged spoon.

[0058] For another example, the screw driver is a hole three-pronged spoon.

[0059] It can be understood that the installation groove 10c is divided into two or more parts, one part of which is used to install the magnetic attraction member 70, and another part of which is used to install the screw driver with air holes.

[0060] The suction sleeve 10 of the embodiment of the present application comprises an interface end 10a and a mounting end 10b. The interface end 10a has an airway interface 10e, one end of which is open for communication with a suction device. The mounting end 10b has a mounting groove 10c, at least a part of which is used for mounting a magnetic member 70, and the mounting groove 10c is in communication with the airway interface 10e, so that the screw 60 is mounted to the mounting end 10b under the action of at least one of the magnetic member 70 and the suction device. In one aspect, the negative pressure generated by the suction device can enhance the adsorption of the screw 60, so that the screw 60 can be tightly mounted in the mounting end 10b. In another aspect, the magnetic force generated by the magnetic member 70 on the screw 60 can overcome the gravity and external interference, further improve the efficiency of the suction of the screw, improve the adsorption of the screw 60 by the suction sleeve 10, effectively avoid the occurrence of the phenomenon of dropping the screw, and improve the safety and reliability of the operation.

[0061] In one embodiment, referring to Figure 2 and Figure 5 , a part of the groove wall of the mounting groove 10c protrudes into the groove to form a clamping portion 30, which is clamped with a screw driver. In this way, by clamping the screw driver with the clamping portion 30, the screw driver can be stably located in the mounting groove 10c during use, reducing the occurrence of suction failure or inaccurate installation of the screw 60 due to displacement of the screw driver, and improving the work quality and efficiency.

[0062] Specifically, the clamping portion 30 refers to a structure formed by the groove wall of the mounting groove 10c protruding into the groove. The clamping portion 30 is clamped with the screw driver, which can prevent the screw driver from being displaced or falling off during use.

[0063] The shape and size of the clamping portion 30 are not limited, as long as it can be clamped with the screw driver to prevent the screw driver from being displaced or falling off during use.

[0064] In one embodiment, referring to Figure 2 and Figure 5 , the suction sleeve 10 comprises a plurality of clamping portions 30, each of which is arranged at intervals along the circumference of the mounting groove 10c. In one aspect, the plurality of circumferentially spaced clamping portions 30 can constrain the screw driver from multiple directions, forming a full-range clamping and fixing effect, which enhances the stability of the screw driver in the suction sleeve 10 compared to a single or smaller number of clamping portions 30. In another aspect, by providing a plurality of clamping portions 30, the sleeve can adapt to different specifications and shapes of screw drivers, improving the compatibility of the suction sleeve 10 for different screw drivers, so that it can be used in various working conditions without the need to design a special suction sleeve 10 for each type of screw driver, reducing production cost and equipment complexity.

[0065] Specifically, the interval distance of the clamping portion 30 along the circumference of the installation groove 10c is not limited.

[0066] In an embodiment, referring to Figure 2 and Figure 5 , the end of the clamping portion 30 along the protruding direction is arc-shaped. In this way, on the one hand, the interference between the screw driver and the clamping portion 30 can be reduced, and on the other hand, the wear during the clamping of the clamping portion 30 and the screw driver can be reduced, the original dimensional accuracy and surface quality of the components can be maintained, thereby prolonging the service life of the suction sleeve 10 and the screw driver, reducing the maintenance cost and replacement frequency of the equipment, and improving the economy and reliability of the entire suction device.

[0067] Specifically, the arc-shaped refers to the end of the clamping portion 30 being curved in an arc shape.

[0068] In an embodiment, referring to Figure 1 , the installation groove 10c includes a first sub-groove 10ca and a second sub-groove 10cb, the first sub-groove 10ca is located on the side of the second sub-groove 10cb close to the interface end 10a, and is respectively communicated with the airway interface 10e and the second sub-groove 10cb, the first sub-groove 10ca is used for installing the magnetic member 70, and the second sub-groove 10cb is used for installing the screw driver. In this way, by communicating the first sub-groove 10ca with the airway interface 10e, the negative pressure generated by the suction device can cooperate with the magnetic force of the magnetic member 70 to generate a stronger adsorption force on the screw 60, effectively reducing the shaking and deviation of the screw 60 during the adsorption process, and improving the accuracy of the suction.

[0069] Specifically, the first sub-groove 10ca is a part of the installation groove 10c, which is located close to the interface end 10a of the suction sleeve 10, and is used for installing the magnetic member 70.

[0070] The shape and size of the first sub-groove 10ca are not limited, as long as the magnetic member 70 can be installed therein.

[0071] The second sub-groove 10cb is a part of the installation groove 10c, which is located close to the installation end 10b of the suction sleeve 10, and is used for installing the screw driver.

[0072] The shape and size of the second sub-groove 10cb are not limited, as long as the screw driver can be installed therein.

[0073] In an embodiment, referring to Figure 1 and Figure 7, the suction sleeve 10 includes a gasket, the mounting groove 10c includes a first sub-groove 10ca and a third sub-groove 10cc, the third sub-groove 10cc is located on the side of the first sub-groove 10ca away from the airway interface 10e, and the first sub-groove 10ca is in communication with the airway interface 10e and the third sub-groove 10cc respectively, the first sub-groove 10ca is used for mounting the magnetic member 70, and the third sub-groove 10cc is used for mounting the gasket.

[0074] In the related art, due to the complex working environment, there are inevitably impurities such as iron filings, aluminum filings, dust, etc. These impurities will gradually adhere to the end of the suction sleeve 10, causing a series of problems in the suction device, for example: screw suction posture deviation: the adhering objects will interfere with the cooperation between the suction device and the screw, causing posture deviation such as tilting and deviation during screw suction, affecting the subsequent tightening accuracy. The adsorption force decreases: the accumulation of impurities will reduce the effective contact area between the suction device and the screw, reducing the adsorption force, and in severe cases, even causing the screw to fall off, affecting production efficiency and stability. Therefore, in this embodiment, by setting the third sub-groove 10cc, the gasket is installed in the third sub-groove 10cc, on the one hand, it can prevent foreign matter such as iron filings and aluminum filings from blocking the sleeve of the screw 60. On the other hand, the gasket is low in cost and can be replaced regularly, which is convenient for cleaning the foreign matter adhered to the adsorption surface, ensuring the stability of the adsorption force, effectively adjusting the posture of the screw 60 to keep it perpendicular to the adsorption surface, avoiding posture deviation such as tilting and deviation during screw suction, and further improving the accuracy of adsorption.

[0075] Specifically, the third sub-groove 10cc is part of the mounting groove 10c, and is located on the side of the first sub-groove 10ca away from the interface end 10a, and is used for mounting the gasket.

[0076] The shape and size of the third sub-groove 10cc are not limited, as long as the gasket can be installed therein.

[0077] The gasket refers to a component located in the third sub-groove 10cc for preventing impurities such as iron filings, aluminum filings, and dust from blocking the sleeve of the screw 60.

[0078] The structure type of the gasket is not limited.

[0079] The material type of the gasket is not limited.

[0080] For example, the material type of the gasket is nylon cloth.

[0081] In a specific embodiment, please refer to Figure 1, the suction sleeve 10 includes a gasket, the mounting groove 10c includes a first sub-groove 10ca, a second sub-groove 10cb and a third sub-groove 10cc, the first sub-groove 10ca is located on one side of the third sub-groove 10cc close to the interface end 10a, the second sub-groove 10cb is located on one side of the third sub-groove 10cc away from the interface end 10a, the first sub-groove 10ca is used for mounting the magnetic member 70, the second sub-groove 10cb is used for mounting the screw driver, and the third sub-groove 10cc is used for mounting the gasket. Thus, during the screw suction operation, the magnetic member 70 in the first sub-groove 10ca can exert a magnetic force to quickly attract the screw 60 to the suction sleeve 10, and adsorb the screw 60 in the screw driver, at the same time, the first sub-groove 10ca in communication with the airway interface 10e of the interface end 10a forms a negative pressure environment due to the work of the suction device, further enhancing the adsorption force of the screw 60, ensuring that the screw 60 accurately enters the installation area. When the screw 60 reaches the appropriate position, the screw driver in the second sub-groove 10cb can perform subsequent tightening operation on it, and the gasket in the third sub-groove 10cc can prevent foreign matter such as iron filings and aluminum filings from blocking the sleeve of the screw 60, and at the same time prevent the screw 60 from tilting, deviating and other attitude deviations during suction.

[0082] In an embodiment, referring to Figure 6 , the screw suction device further includes a connecting rod and a driving bit, the driving bit has an airway in communication with the airway interface 10e and the suction device, the wall body of the interface end 10a has a first connecting hole 10d, the part of the airway of the driving bit extends into the airway interface 10e, and has a second connecting hole in communication with the first connecting hole 10d, the connecting rod is arranged in the first connecting hole 10d and the second connecting hole to drive the suction sleeve 10 and the driving bit. Thus, on the one hand, the suction sleeve 10 and the driving bit are connected together through the connecting rod, and the airway of the driving bit is in communication with the airway interface 10e of the suction sleeve 10, realizing the integration of the screw suction and screw 60 installation operations. The operator does not need to perform the screw suction and screw 60 tightening operations respectively, but only needs to use one device to complete the entire screw 60 installation process, greatly improving the work efficiency and reducing the operation steps and time cost. On the other hand, the connecting rod is arranged in the first connecting hole 10d and the second connecting hole to realize the connection of the driving bit and the suction sleeve 10, so that the connection between the suction sleeve 10 and the driving bit is firm and reliable. During the operation process, the two can maintain a stable connection state, improving the continuity and accuracy of the screw suction and screw 60 installation operations.

[0083] Specifically, the connecting rod refers to a component connecting the driving bit and the suction sleeve 10.

[0084] The driving bit is connected with the suction sleeve 10, rotates the suction sleeve 10 to drive the screw 60 to rotate, and realizes the tightening or loosening of the screw 60.

[0085] The first connecting hole 10d refers to a hole on the wall of the interface end 10a for the connecting rod to pass through.

[0086] The size and shape of the first connecting hole 10d are not limited.

[0087] The second connecting hole refers to a hole on the driving bit for the connecting rod to pass through.

[0088] The size and shape of the second connecting hole are not limited.

[0089] The driving bit has an air channel that communicates with the airway interface 10e and the suction device, so that the negative pressure generated by the suction device can act on the screw 60, enhancing the adsorption force of the screw 60.

[0090] The negative pressure of the suction device acts on the side of the screwdriver away from the mounting groove 10c, forming a stable suction force to fix the screw 60 in a predetermined position. Subsequently, the driving bit rotates the screw 60 sleeve and the screwdriver, realizing the locking of the screw 60.

[0091] In an embodiment, referring to Figure 6 The nail suction device further comprises a nail feeding pipe 40 and a vertical slide 50a, the vertical slide 50a is arranged on the side of the nail suction sleeve 10 away from the interface end 10a and communicates with the mounting groove 10c, the nail feeding pipe and the vertical slide 50a communicate and are used for conveying the screw 60 into the vertical slide 50a.

[0092] In an embodiment, the nail suction sleeve 10 comprises a cylinder body and a self-repairing layer, at least part of the surface of the cylinder body is provided with the self-repairing layer, and the self-repairing layer is a photo-thermal, pH-responsive self-repairing anticorrosive coating. In this way, the corrosion phenomenon can be prevented from affecting the stability of the nail suction.

[0093] Specifically, the self-repairing layer refers to a coating that can prevent the nail suction sleeve 10 from being corroded and can repair itself.

[0094] It can be understood that part of the surface (including the inner surface and the outer surface) of the nail suction sleeve 10 can be provided with the self-repairing layer, or the entire surface of the nail suction sleeve 10 can be provided with the self-repairing layer.

[0095] In an embodiment, the self-repairing coating has a microcapsule-containing epoxy coating. In this way, by adding microcapsules with stimulus responsiveness to the epoxy coating with shape memory function to protect the metal from corrosion, it has the advantages of being more green, more convenient and higher performance.

[0096] In an embodiment, the microcapsule is based on a reduced graphene oxide-mesoporous silica (rGO-SiO2) hybrid material and a pH-responsive polymer film-poly (dimethylamino ethyl methacrylate) (PDMAEMA) layer-by-layer self-assembly, and loaded with corrosion inhibitor 95S, named rGO-SiO2-95S-P.

[0097] In an embodiment, referring to Figure 8 When the self-repairing layer is damaged, the pH-sensitive response substance responds to the change in the environment pH and releases the corrosion inhibitor to the damaged site to slow down or prevent the corrosion of the pin sleeve 10.

[0098] Specifically, when the self-repairing layer is in a corrosive environment, various defects inevitably occur, such as cracks and holes due to long-term service, and current breakdown of the self-repairing layer due to electrochemical reaction. The corrosive medium reaches the barrel of the pin sleeve 10 along the defects on the self-repairing layer, thereby damaging the pin sleeve 10. When the electrochemical reaction occurs on the surface of the pin sleeve 10, a large number of H + The solution becomes acidic, the pH value decreases, and the corrosion current breaks through the self-repairing layer. At this time, the intelligent response filler rGO-SiO2-95S-P breaks, triggering the protonation of the polymer film PDMAEMA, which opens the "switch" according to the change in the environment pH and releases the corrosion inhibitor 95S. The N atom on the nitrogen heterocycle of the 95S molecule contains a large number of π electrons, which can combine with the empty d orbital of the Fe atom on the surface of the pin sleeve 10, and through the donor-acceptor interaction, it is adsorbed to the exposed barrel surface to form a film, forming a complex 95S-Fe-95S, blocking the diffusion channel of the corrosive medium, and achieving the goal of corrosion protection.

[0099] In an embodiment, referring to Figure 9 and Figure 10 The figure shows the process of self-repairing of the self-repairing coating under the conditions of pH and photo-thermal dual response.

[0100] Specifically, the bisphenol A resin has a photo-responsive shape memory function, which can activate the shape memory effect under light conditions, restore the morphology of the damaged self-repairing layer, and reduce the damage size. The synergistic effect of the photo-thermal responsive shape memory resin and the pH-responsive intelligent filler can significantly improve the self-healing performance of the self-repairing layer.

[0101] wherein, part of the chemical reaction formula includes: Fe→Fe 2+ +2e - ,

[0102] nFe 2+ +2n95S→[95S-Fe-95S] n +2nH + ,

[0103] Fe + 95S → Fe-95S.

[0104] In one embodiment, referring to Figure 11 , the proportion of monthly tightening faults in total faults is obtained by comparing the fault rates of the pin sucking device and the pin sucking method before improvement.

Claims

1. A nail suction sleeve characterized by, The nail suction sleeve comprises: an interface end having an airway interface open at one end for communication with a suction device; a mounting end having a mounting groove, at least a part of which is used for mounting a magnetic member, and the mounting groove is in communication with the airway interface so that a screw is mounted to the mounting end under the action of at least one of the magnetic member and the suction device.

2. The pin retraction sleeve of claim 1, wherein, A part of the mounting groove is used for mounting the magnetic member, and another part is used for mounting a screw driver with an air hole, and the mounting groove is in communication with the air hole so that the screw is mounted to the mounting end through the screw driver.

3. The pin retraction sleeve of claim 2, wherein, A part of the groove wall of the mounting groove protrudes into the groove to form a clamping part, and the clamping part is clamped with the screw driver.

4. The pin retraction sleeve of claim 3, wherein, The nail suction sleeve comprises a plurality of clamping parts, each of which is arranged at intervals along the circumference of the mounting groove.

5. The pin retraction sleeve of claim 4, wherein, The end of the clamping part in the protruding direction is arc-shaped.

6. The pin retraction sleeve of any of claims 2-5, wherein, The mounting groove comprises a first sub-groove and a second sub-groove, the first sub-groove is located on the side of the second sub-groove close to the interface end, and is in communication with the airway interface and the second sub-groove respectively, the first sub-groove is used for mounting the magnetic member, and the second sub-groove is used for mounting the screw driver; and / or, The screw driver is a hexagonal spoon with a hole.

7. The pin retraction sleeve of any of claims 1-5, wherein, The nail suction sleeve comprises a gasket, the mounting groove comprises a first sub-groove and a third sub-groove, the third sub-groove is located on the side of the first sub-groove away from the airway interface, and the first sub-groove is in communication with the airway interface and the third sub-groove respectively, the first sub-groove is used for mounting the magnetic member, and the third sub-groove is used for mounting the gasket.

8. The pin retraction sleeve of any of claims 1-5, wherein, The nail suction sleeve comprises a cylinder body and a self-repairing layer, at least a part of the surface of the cylinder body is provided with the self-repairing layer, and the self-repairing layer is a photo-thermal, pH-responsive self-repairing anticorrosive coating.

9. A pin suction device characterized by The nail suction device comprises a suction device, a magnetic member and the nail suction sleeve according to any one of claims 1-8, the suction device is in communication with one end of the airway interface, and the magnetic member is mounted in the mounting groove so that a screw is mounted to the mounting end under the action of at least one of the magnetic member and the suction device.

10. The pin suction device according to claim 9, wherein The nail suction device further comprises a connecting rod and a driving bit, the driving bit has an airway in communication with the airway interface and the suction device respectively, the wall body of the interface end has a first connecting hole, a part of the airway of the driving bit protrudes into the airway interface, and a second connecting hole in communication with the first connecting hole, the connecting rod is arranged in the first connecting hole and the second connecting hole, so that the nail suction sleeve and the driving bit are drivingly connected.

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