A nail removal device

Abstract

The present invention provides a nail-extracting device for use with a screwdriver having a magnetic bit, the nail-extracting device comprising: a barrel, a lower nail barrel and a nail-extracting control device; the barrel has a cavity for accommodating screws and a carrying connection portion connected to a body part of an operator; the lower nail barrel is connected to the barrel and has a channel for the screw to slide through along the axial direction; the upper end port of the channel extends into the barrel and is connected to the cavity for the screw to slide in along the axial direction; the lower end port of the channel is connected to the outside and is open; the nail-extracting control device is arranged at the lower end port of the channel; wherein the nail-extracting control device opens the lower end port when the magnetic bit reaches a set position, so as to load the screw through the magnetic attraction of the magnetic bit, and closes the lower end port when the magnetic bit is removed from the set position. The present invention can improve the technical problem that the nail-extracting efficiency of the magnetic bit of an electric screwdriver is slow during the screw installation process, which affects the screw installation efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of screw installation, and in particular to a nail removing device. Background Art

[0002] A pneumatic or electric screwdriver is an installation tool that uses compressed air or electrical energy to rotate the rotor, thereby causing the screwdriver to drive the screw to rotate and tighten or loosen. Since electric screwdrivers have the advantages of simple operation and high safety, they are widely used in the installation process of various industries, greatly improving people's work efficiency.

[0003] In the semiconductor industry, when performing operations such as installation and machine maintenance, people often need to hold an electric screwdriver in one hand and take a nail and place the screw on the magnetic blade of the electric screwdriver with the other hand, and finally tighten the screw on the surface such as the cover. This operation method requires manually installing the screws one by one on the electric screwdriver, which not only distracts the operator's mind and creates potential operational risks, but also the nailing efficiency between the screw and the magnetic blade is slow, thus limiting the improvement of screw installation efficiency. Summary of the invention

[0004] In view of the above shortcomings of the prior art, the present invention provides a nail-pulling device to improve the technical problem that the magnetic blade of an electric screwdriver has a slow nail-pulling efficiency during screw installation, which affects the screw installation efficiency.

[0005] To achieve the above-mentioned purpose and other related purposes, the present invention provides a nail-pulling device for use with a screwdriver having a magnetic cutter head, the nail-pulling device comprising: a barrel body, a lower nail barrel and a nail-pulling control device; the barrel body has a cavity for accommodating screws and a carrying connection portion connected to a body part of an operator; the lower nail barrel is connected to the barrel body and has a channel for the screw to slide axially through; the upper end port of the channel extends into the barrel body and is connected to the cavity for the screw to slide axially therethrough; the lower end port of the channel is connected to the outside and is open; the nail-pulling control device is arranged at the lower end port of the channel; wherein the nail-pulling control device opens the lower end port when the magnetic cutter head reaches a set position so as to load the screw through the magnetic attraction of the magnetic cutter head, and closes the lower end port when the magnetic cutter head is removed from the set position.

[0006] In an example of a nail ejection device of the present invention, a nail ejection control device includes two plug-in parts that are movably inserted into a channel; the spacing distance between the two plug-in parts along the axial direction of the lower nail barrel corresponds to the length of a single screw; when the magnetic cutter head reaches a set position, the two plug-in parts are triggered to alternately open the channel, so that after the screw between the two plug-in parts is loaded onto the magnetic cutter head, the screw above the upper plug-in part is loaded between the two plug-in parts.

[0007] In an example of the nail ejection device of the present invention, the nail ejection control device also includes a control rod, which is hingedly connected to the lower nail barrel and can swing in the up and down directions; the two plug-in parts are respectively connected to the control rod on both sides of the hinge axis; when the magnetic knife head reaches the set position, it drives the control rod to swing, thereby driving the two plug-in parts to alternately open the channel.

[0008] In one example of the nail ejecting device of the present invention, a first elastic reset member is arranged between one end of the control rod located above the hinge shaft and the wall of the lower nail barrel; one end of the control rod located below the hinge shaft extends to below the lower end port and is provided with a clamping portion corresponding to the magnetic cutter head.

[0009] In an example of the nail ejection device of the present invention, the nail ejection control device also includes a buffer assembly, the buffer assembly includes a slider and a second elastic reset member, the slider is slidably connected to the clamping portion and has a clamping slot corresponding to the magnetic cutter head, and the second elastic reset member is arranged between the slider and the control rod.

[0010] In an example of the nail extraction device of the present invention, the cavity includes a nail loading cavity and a nail extraction cavity which are interconnected. Along the height direction of the barrel body, the nail loading cavity is located above the nail extraction cavity, and the bottom wall of the nail loading cavity includes a downwardly inclined inclined surface.

[0011] In an example of the nail removal device of the present invention, the inclined surface is a spiral surface structure arranged around the axis of the cavity.

[0012] In one example of the nail extraction device of the present invention, the nail extraction cavity is provided with a guide portion, which guides the screws sliding out of the nail loading cavity to fall to the upper end port in sequence along a preset path, and enter the channel with the bolt head facing down and the screw rod facing up.

[0013] In an example of a nail extraction device of the present invention, the guide portion includes a guide port and a guide groove, the guide port connects the nail loading cavity and the nail extraction cavity, the cross-section of the guide port gradually shrinks from the entrance to the exit to guide the screw entering from the entrance to slide out from the exit in the axial direction; the two ends of the guide groove pass through and respectively connect the guide port and the upper end port, and the guide groove has a slope so that the screws can slide downward along the guide groove to the upper end port position under the action of gravity.

[0014] In an example of the nail removal device of the present invention, the guide groove includes two spiral guide rails arranged in parallel around the axis of the barrel body, and the radial gap between the two spiral guide rails is larger than the screw diameter of the screw and smaller than the bolt head diameter of the screw.

[0015] In one example of the nail extraction device of the present invention, a notch is provided at the connection position between the upper end port and the guide groove, the notch is located below the guide groove, the width of the notch corresponds to the width of the guide groove, and the height of the notch is smaller than the screw rod length of the screw, so as to stop the small end of the screw sliding to the notch, so that the screw falls and enters the channel with the bolt head facing down and the screw rod facing up.

[0016] In an example of the nail ejecting device of the present invention, the nail ejecting device also includes a ejecting rod, which is slidably connected to the lower nail barrel and moves up and down along the axial direction of the lower nail barrel to eject the screw stopped outside the notch into the upper end port.

[0017] In an example of the nail ejecting device of the present invention, the nail ejecting device also includes a first transmission shaft, which is rotatably connected to the barrel body and is arranged parallel to the lower nail barrel; a spiral surface is arranged on the outer peripheral surface of the transmission shaft, and when the first transmission shaft rotates reciprocatingly, the spiral surface supports the lower end of the ejecting rod to move up and down along the axial direction of the lower nail barrel.

[0018] In an example of the nail ejection device of the present invention, the nail ejection device also includes a first transmission component, and the nail ejection control device includes a slider, which is slidably installed on the lower end of the control rod and slides relative to the control rod under the push of the magnetic cutter head. The first transmission shaft is connected to the slider through the first transmission component to drive the first transmission shaft to rotate when the slider slides.

[0019] In an example of the nail removal device of the present invention, the first transmission assembly includes a gear and a rack. The gear is coaxially installed at the end of the first transmission shaft and slides axially along the first transmission shaft. The rack is installed on the slider and meshes with the gear.

[0020] In an example of the nail ejecting device of the present invention, the nail ejecting device also includes a second transmission shaft and a second transmission assembly, the second transmission shaft is rotatably connected to the barrel body and is arranged parallel to the lower nail barrel; the upper end of the second transmission shaft extends to the nailing cavity and is fixedly connected to the stirring part, and the second transmission shaft is rotatably connected to the first transmission shaft through the second transmission assembly.

[0021] In summary, the present invention provides a nail-pulling device, and the unexpected technical effect produced by the present invention is: since the barrel body, the lower nail barrel and the nail-pulling control device are integrated, the integrated design of screw loading and carrying can be realized, and since the carrying connection part is provided, the nail-pulling device can be conveniently connected to the operator's body part, thereby improving the convenience of carrying and operation; since the lower nail barrel has a channel, the screw is allowed to slide axially, and the screw can slide into the cavity of the barrel body and then slide out through the lower end port of the lower nail barrel, thereby realizing rapid nail-pulling of the screw, reducing the probability of the screw getting stuck in the channel, and facilitating improving the nail-pulling efficiency of the magnetic cutter head; since the nail-pulling control device is located at the lower end port of the lower nail barrel, when the magnetic cutter head reaches the set position, the nail-pulling control device The setting will be turned on, and the magnetic attraction of the magnetic cutter head is used to realize automatic loading of screws. The nailing process does not require manual removal of nails, thereby saving time for manual removal of nails and further improving the nailing efficiency of the magnetic cutter head; because the nail removal control device can close the lower end port when the magnetic cutter head is removed from the set position, this can prevent the screws from accidentally falling or losing, thereby improving the accuracy and safety of screw loading and helping to reduce the failure rate during the nailing process; during the entire nailing process, the automatic nailing of screws can be realized by only moving the position of the magnetic cutter head and forming a specific position match with the lower end port, thereby not only reducing manual hand operations and improving nailing efficiency, but also reducing the distraction of the operator's attention and reducing safety risks during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of an example of a nail ejecting device of the present invention;

[0024] Figure 2 A partial cross-sectional view of a mounting cavity in an example of a nail removal device of the present invention;

[0025] Figure 3 for Figure 2 A partial enlarged view of the middle A area;

[0026] Figure 4 A partial cross-sectional view of a cavity in an example of a nail removal device of the present invention;

[0027] Figure 5 A partial cross-sectional view of another angle of the cavity in an example of the nail removal device of the present invention;

[0028] Figure 6 It is a schematic diagram of the overall structure of the lower nail barrel in an example of the nail removal device of the present invention;

[0029] Figure 7 This is a state diagram of a nail ejection control device opening a lower end port in an example of a nail ejection device of the present invention;

[0030] Figure 8 This is a state diagram of the nail ejection control device closing the lower end port in an example of the nail ejection device of the present invention;

[0031] Fig. 9 It is a schematic diagram of the connection structure between the control rod and the clamping part in an example of the nail ejecting device of the present invention;

[0032] Fig.10 It is a schematic diagram of the local installation position between the clamping part and the sliding block in an example of the nail ejecting device of the present invention;

[0033] Fig.11 It is a schematic diagram of the position of the ejector rod when not ejecting materials in an example of the nail ejector device of the present invention;

[0034] Fig.12 It is a schematic diagram of the position of the ejector rod when the screw is ejected in an example of the nail ejector device of the present invention;

[0035] Fig.13 It is a schematic diagram of the installation position of the ejector rod relative to the partition plate in an example of the nail ejection device of the present invention;

[0036] Fig.14 It is a partial schematic diagram of the installation position between the first transmission assembly and the slider in an example of the nail ejecting device of the present invention;

[0037] Fig.15 This is a schematic diagram of the partial installation position between the gear and the rack in an example of the nail ejecting device of the present invention.

[0038] Component number description:

[0039] 100, nail-extracting device; 10, barrel; 11, cavity; 111, nail-loading cavity; 1111, inclined surface; 1112, guide channel; 112, nail-extracting cavity; 12, carrying connection portion; 13, guide portion; 131, guide port; 132, guide groove; 133, spiral guide rail; 14, mounting cavity; 141, mounting plate; 1411, notch; 142, partition; 20, lower nail barrel; 21, channel; 211, upper end port; 2111, notch; 212, lower end port; 22, first plug interface; 23, second plug interface; 24, rotating sleeve; 25, guide block; 30, nail-extracting control device; 31, control rod; 3111, first plug-in part; 3112, second plug-in part; 312, clamping part; 3121, U-shaped positioning groove; 3122, guide sleeve; 313, hinge shaft; 32, first elastic reset member; 33, buffer assembly; 331, slider; 3311, bayonet; 332, second elastic reset member; 333, guide rod; 34, ball; 40, ejector rod; 41, reset spring; 50, transmission structure; 51, first transmission shaft; 511, spiral surface; 512, slide groove; 52, first transmission assembly; 521, gear; 5211, bump; 522, rack; 53, second transmission shaft; 54, second transmission assembly; 541, first pulley; 542, second pulley; 543, transmission belt; 60, stirring part; 70, screw; 80, screwdriver; 81, magnetic tool head. DETAILED DESCRIPTION

[0040] The following is an explanation of the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the features in the following embodiments and the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific embodiments, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or according to the conditions recommended by the manufacturers.

[0041] When numerical ranges are given in the embodiments, it should be understood that unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are familiar to those skilled in the art and the description of the present invention, and any method, device and material of the prior art similar or equivalent to the method, device and material in the embodiments of the present invention can also be used to implement the present invention.

[0042] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" etc. used in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships, without substantially changing the technical content, should also be regarded as the scope of implementation of the present invention.

[0043] See also Figures 1 to 4 The present invention provides a nail-pulling device 100 for use with a screwdriver 80 having a magnetic cutter head 81. The nail-pulling device 100 comprises: a barrel 10, a lower nail barrel 20 and a nail-pulling control device 30. The barrel 10 has a cavity 11 for accommodating a screw 70 and a carrying connection portion 12 connected to a body part of an operator. The shape of the cavity 11 can be cylindrical, polygonal, rectangular, etc. In the present embodiment, the shape of the cavity 11 is a nearly cylindrical structure. The cavity 11 and the carrying connection portion 12 are respectively arranged at both ends of the height direction of the barrel 10. The carrying connection portion 12 can be connected to any part of the operator's arm, wrist or waist, etc. In order to facilitate nailing and reduce the distance between the barrel 10 and the magnetic cutter head 81, preferably, in the present embodiment, the carrying connection portion 12 is connected to the forearm of the operator holding the screwdriver 80, and the connection position is close to the wrist end. The connection method between the carrying connection portion 12 and the operator can be a strap fastening connection, a buckle snap connection, etc.

[0044] See also Figures 2 to 6 , an installation cavity 14 is formed between the carrying connection part 12 and the cavity 11, and an installation plate 141 is arranged at the lower end of the installation cavity 14 along the height direction of the barrel body 10, and the installation plate 141 is fixedly connected to the carrying connection part 12, and a partition 142 is arranged at the upper end of the installation cavity 14, and the partition 142 forms the bottom wall of the cavity 11. The lower nail barrel 20 is connected to the barrel body 10, and the connection method can be one-piece molding, bolt fixed connection and other methods. The lower nail barrel 20 has a channel 21 for the screw 70 to slide through in the axial direction, wherein the axial sliding of the screw 70 means that the falling direction of the screw 70 in the channel 21 is basically consistent with the axial direction of the screw 70. The channel 21 is respectively provided with an upper end port 211 and a lower end port 212 at both ends in the height direction. The upper end port 211 penetrates the partition 142 and extends into the barrel body 10, and is connected with the cavity 11, so that the screw 70 can slide in in the axial direction. The upper end port 211 can be directly connected to the cavity 11, or indirectly connected through a guide structure, so that the screw 70 in the cavity 11 can slide into the channel 21 along the axial direction of the screw 70. The lower end port 212 extends toward one side of the mounting plate 141 and is connected to the outside and open, that is, the lower end port 212 is open. The lower end port 212 is located above the mounting plate 141 and is suspended. In this way, the lower nail barrel 20 can be located inside the mounting cavity 14, thereby forming a better protective effect.

[0045] See also Figure 7 and Figure 8 , the nail-exiting control device 30 is arranged at the lower end port 212 of the channel 21. The nail-exiting control device 30 can be connected to the lower nail barrel 20, or it can be connected to the barrel body 10. The nail-exiting control device 30 opens the lower end port 212 when the magnetic cutter head 81 reaches the set position, so as to load the screw 70 through the magnetic attraction of the magnetic cutter head 81, and closes the lower end port 212 when the magnetic cutter head 81 is removed from the set position. The nail-exiting control device 30 can be an electric valve structure, when the magnetic cutter head 81 reaches the set position, the electric valve is operated alone to open the lower end port 212, and when the magnetic cutter head 81 is removed from the set position, the electric valve is operated again to close the lower end port 212. The nail removal control device 30 can also be a mechanical valve structure. When the magnetic cutter head 81 reaches the set position, the magnetic cutter head 81 touches the mechanical valve, causing the mechanical valve to open the lower end port 212. When the magnetic cutter head 81 is removed from the set position, the magnetic cutter head 81 is disengaged from the mechanical valve, causing the mechanical valve to close the lower end port 212.

[0046] When the operator needs to install the screw 70, first connect the nail removal device 100 to the position of the operator's forearm holding the screwdriver 80 through the carrying connection part 12, and install the installation screw 70 into the cavity 11. When the magnetic cutter head 81 needs to remove the nail, the magnetic cutter head 81 is moved to the set position. At this time, the nail removal control device 30 controls the opening of the lower end port 212, and the screw 70 in the channel 21 falls from the lower end port 212 onto the magnetic cutter head 81, and forms a magnetic fixed connection with the magnetic cutter head 81; then remove the magnetic cutter head 81 loaded with the screw 70 from the set position, and at this time the nail removal control device 30 controls the closing of the lower end port 212 to complete a nailing operation. In this way, continuous nailing of the magnetic cutter head 81 can be achieved. During the entire nailing process described above, the magnetic cutter head 81 can be automatically nailed only by moving the position of the magnetic cutter head 81 so that it forms a specific position match with the lower end port 212. Therefore, it can not only reduce the operator's manual operation and improve the nailing efficiency, but also reduce the distraction of the operator's attention, thereby reducing the safety risks during the operation.

[0047] See also Figures 6 to 8In an example of the nail ejection device 100 of the present invention, the nail ejection control device 30 includes a first plug-in portion 3111 and a second plug-in portion 3112. Along the height direction of the channel 21, the first plug-in portion 3111 is arranged above the second plug-in portion 3112, and the second plug-in portion 3112 is arranged at the lower end port 212. The wall of the lower nail barrel 20 is provided with a first plug-in interface 22 and a second plug-in interface 23. The first plug-in interface 22 corresponds to the first plug-in portion 3111. The first plug-in portion 3111 can be movably plugged into the first plug-in interface 22 and block the channel 21. Blocking the channel 21 here does not mean sealing the channel 21, but means that the first plug-in portion 3111 can prevent the screw 70 located above the first plug-in portion 3111 in the channel 21 from continuing to fall after being inserted into the first plug-in interface 22. The second plug-in interface 23 corresponds to the second plug-in portion 3112. The second plug-in portion 3112 can be movably plugged into the second plug-in interface 23 and block the channel 21. Similarly, the blocking channel 21 here does not mean sealing the channel 21, but means that the second plug part 3112 can block the screw 70 located above the second plug part 3112 in the channel 21 from falling further after being inserted into the second plug port 23. The specific shape and structure of the first plug part 3111 and the second plug part 3112 are not limited. For example, the first plug part 3111 and the second plug part 3112 can be a rod-shaped structure, a flat plate structure or a block structure, etc., as long as they can block the screw 70 in the channel 21 from falling when they are inserted into the channel 21.

[0048] The spacing distance between the first plug-in portion 3111 and the second plug-in portion 3112 along the axial direction of the lower nail barrel 20 corresponds to the length of a single screw 70. Corresponding means that the spacing distance between the first plug-in portion 3111 and the second plug-in portion 3112 in the axial direction is equal to or slightly greater than the length of the drop screw 70 in the channel 21, that is, only one screw 70 is allowed to be accommodated between the first plug-in portion 3111 and the second plug-in portion 3112 along the height direction of the channel 21. When the first plug-in portion 3111 is inserted into the channel 21, it is correspondingly inserted above the screw rod of the screw 70, and when the second plug-in portion 3112 is inserted into the channel 21, it is correspondingly inserted below the bolt head of the screw 70. There is no limit to the way in which the first plug-in portion 3111 is inserted into the first plug-in interface 22 and the second plug-in portion 3112 is inserted into the second plug-in interface 23, which can be inserted manually or automatically by a linear moving device such as a cylinder, a gear rack, etc. When the magnetic cutter head 81 reaches the set position, the first plug part 3111 and the second plug part 3112 are triggered to alternately open the channel 21, so that after the screw 70 located between the first plug part 3111 and the second plug part 3112 is loaded onto the magnetic cutter head 81, the screw 70 above the first plug part 3111 is loaded between the first plug part 3111 and the second plug part 3112, so as to prepare for the next screw 70 to be driven out. When the magnetic cutter head 81 reaches the set position, the triggering method for triggering the first plug part 3111 and the second plug part 3112 to alternately open the channel 21 can be that the magnetic cutter head 81 directly contacts the control switch that controls the movement of the first plug part 3111 and the second plug part 3112 to form a trigger relationship, or when the magnetic cutter head 81 reaches the set position, it directly touches the first plug part 3111 and the second plug part 3112, so that the first plug part 3111 and the second plug part 3112 are subjected to the contact force to open or close the channel 21.

[0049] By setting the first plug-in portion 3111 and the second plug-in portion 3112, and triggering the first plug-in portion 3111 and the second plug-in portion 3112 to alternately open the channel 21 when the magnetic cutter head 81 reaches the set position, it can be achieved that when the magnetic cutter head 81 reaches the set position, the second plug-in portion 3112 below moves outward along the second plug interface 23 to open the channel 21 at the corresponding position, so that the screw 70 located between the first plug-in portion 3111 and the second plug-in portion 3112 is discharged from the lower end port 212 and loaded onto the magnetic cutter head 81. When the magnetic cutter head 81 is removed from the set position, the second plug-in portion 3112 at the bottom is reinserted into the channel 21 along the second plug-in port 23, and the lower end port 212 is blocked again; at the same time, the first plug-in portion 3111 moves outward along the first plug-in port 22, and the channel 21 at the corresponding position is opened again, so that the screw 70 above the first plug-in portion 3111 is reloaded between the first plug-in portion 3111 and the second plug-in portion 3112, thereby realizing the arrangement of the screws 70 and falling one by one during the nailing process of the magnetic cutter head 81, thereby ensuring the accuracy and continuity of the nailing process of the magnetic cutter head 81.

[0050] See also Figures 6 to 9 In an example of the nail ejection device 100 of the present invention, the nail ejection control device 30 further includes a control rod 31, which is hingedly connected to the lower nail barrel 20 and can swing in the up and down direction of the lower nail barrel 20. The hinged connection method includes but is not limited to setting a hinge shaft 313 on one of the control rod 31 and the lower nail barrel 20, and correspondingly setting a rotating sleeve 24 on the other, and realizing the swing of the control rod 31 in the up and down direction by rotating the hinge shaft 313 in the rotating sleeve 24. Specifically, in this embodiment, the control rod 31 is provided with a hinge shaft 313, and the outer side of the barrel wall of the lower nail barrel 20 is provided with a rotating sleeve 24, and the hinge shaft 313 is penetrated in the rotating sleeve 24 and is rotatably connected relative to the rotating sleeve 24. The first plug-in portion 3111 and the second plug-in portion 3112 are respectively connected to the control rod 31 on both sides of the hinge shaft 313, and correspondingly, the rotating sleeve 24 is set at a position between the first plug interface 22 and the second plug interface 23.

[0051] When the magnetic blade head 81 reaches the set position, it drives the control rod 31 to swing, thereby driving the first plug-in portion 3111 and the second plug-in portion 3112 to alternately open the channel 21. When the magnetic blade head 81 reaches the set position, it drives the control rod 31 to swing. The magnetic blade head 81 can directly touch the control rod 31 to drive the control rod 31 to swing, or the magnetic blade head 81 can touch other parts installed on the control rod 31 to indirectly drive the control rod 31 to swing. Through the swinging of the control rod 31, the linkage control between the first plug-in portion 3111 and the second plug-in portion 3112 at both ends of the hinge shaft 313 can be achieved. Since the first plug-in portion 3111 and the second plug-in portion 3112 are respectively arranged at both ends of the hinge shaft 313, the first plug-in portion 3111 and the second plug-in portion 3112 can alternately open the channel 21 during the swinging process of the control rod 31. During the swinging process of the control rod 31, no external electric energy is required to be consumed. The control rod 31 can be swung only when the magnetic cutter head 81 touches the control rod 31. This can enable the first plug-in portion 3111 and the second plug-in portion 3112 to alternately open the channel 21 and complete the nailing action of the magnetic cutter head 81. Therefore, the operation process of this structure is more energy-saving and environmentally friendly. Moreover, due to its simple structure, it can also reduce the manufacturing cost.

[0052] See also Figure 7 and Figure 8 In an example of the nail removal device 100 of the present invention, a first elastic reset member 32 is provided between the end of the control rod 31 located above the hinge shaft 313 and the wall of the lower nail tube 20. The first elastic reset member 32 may be a compression spring, an air spring or other compressible elastic body. Figure 6 As shown, when the magnetic cutter head 81 reaches the set position and drives the control rod 31 to swing, the first elastic reset member 32 is compressed to store elastic force; Figure 7As shown, when the magnetic drill bit is separated from the control rod 31, the first elastic reset member 32 releases the elastic force, which drives the end of the control rod 31 located above the hinge shaft 313 to swing to the side away from the lower nail barrel 20, thereby driving the first plug-in portion 3111 to move out of the channel 21 to open the channel 21. By providing the first elastic reset member 32, the automatic reset of the control rod 31 during the swinging process can be achieved, reducing the operating force required to be applied from the outside, and also improving the response speed of the swing reset of the control rod 31. At the same time, the swing angle range when the magnetic cutter head 81 drives the control rod 31 to swing can also be limited to prevent excessive swinging and reduce the hard collision between the control rod 31 and the barrel wall of the lower nail barrel 20. Specifically, in the present embodiment, the first elastic reset member 32 is a compression spring, and the two ends of the compression spring are respectively in contact with the barrel wall of the lower nail barrel 20 and the control rod 31. The first elastic return member 32 can be located at any position above, below or to the side of the first plug-in portion 3111. Preferably, in this embodiment, the first elastic return member 32 is located above the first plug-in portion 3111, which can facilitate the installation and replacement of the first elastic return member 32.

[0053] See also Figures 7 to 9 The end of the control rod 31 located below the hinge shaft 313 extends to below the lower end port 212 and is provided with a clamping portion 312 corresponding to the magnetic cutter head 81. When the magnetic cutter head 81 drives the control rod 31 to swing, the magnetic cutter head 81 abuts against the clamping portion 312. In order to reduce the side deviation of the control rod 31 during the swinging process, a U-shaped positioning groove 3121 is provided on the side of the clamping portion 312 facing the magnetic cutter head 81. When the magnetic cutter head 81 drives the control rod 31 to swing, the magnetic cutter head 81 is clamped in the U-shaped positioning groove 3121.

[0054] See also Figures 7 to 9In an example of the nail ejection device 100 of the present invention, the nail ejection control device 30 further includes a buffer assembly 33, the buffer assembly 33 includes a slider 331 and a second elastic reset member 332, and the slider 331 is slidably connected to the clamping portion 312. The sliding connection between the slider 331 and the clamping portion 312 is not limited, for example, the slider 331 and the clamping portion 312 may be slidably connected through a guide rail and a guide block, or may be slidably connected through a guide rod and a guide sleeve, etc. Preferably, in this embodiment, the slider 331 is installed with a guide rod 333, and the clamping portion 312 is installed with a guide sleeve 3122, and the guide rod 333 is slidably penetrated through the guide sleeve 3122. The number of guide rods 333 and guide sleeves 3122 may be one group or multiple groups. Preferably, in this embodiment, two groups of guide rods 333 and guide sleeves 3122 are provided, and the two groups of guide rails and guide sleeves 3122 are respectively provided on both sides of the slider 331. The sliding connection between the guide rod 333 and the guide sleeve 3122 is realized by the sliding connection between the slider 331 and the clamping portion 312. The slider 331 is provided with a clamping hole 3311 corresponding to the magnetic cutter head 81 on the side facing the magnetic cutter head 81. The clamping hole 3311 can be any structure shape that can be clamped with the magnetic cutter head 81, such as a U-shaped hole or a rectangular hole. Preferably, in this embodiment, the clamping hole 3311 is a U-shaped hole structure, which is convenient for processing and can reduce the stress concentration phenomenon generated during processing.

[0055] Please note that Figure 3 , Figure 7 and Figure 8 The clamping portion 312 and the buffer assembly 33 are both located above the mounting plate 141, and during the swinging process of the control rod 31, the clamping portion 312 and the buffer assembly 33 are not in contact with the mounting plate 141. In order to facilitate the magnetic cutter head 81 to be clamped into the clamping hole 3311, the mounting plate 141 is also provided with a notch 1411 at a corresponding position, and corresponds to the U-shaped positioning groove 3121 on the clamping portion 312.

[0056] The second elastic reset member 332 is disposed between the slider 331 and the control rod 31. The two ends of the second elastic reset member 332 are respectively in contact with the slider 331 and the control rod 31. The second elastic reset member 332 can be a compression spring, an air spring or other compressible elastic body. Figure 6 and Figure 7The second elastic reset member 332 is a compression spring. When the magnetic cutter head 81 is inserted into the bayonet 3311 and the slider 331 is pushed to slide toward the control rod 31, the second elastic reset member 332 is compressed to generate elastic force. As the magnetic cutter head 81 further swings, the elastic force gradually increases, and the bayonet 3311 gradually approaches the U-shaped positioning groove 3121 on the clamping portion 312. When the magnetic cutter head 81 contacts the bayonet 3311 and the U-shaped positioning groove 3121 at the same time, the second elastic reset member 332 stops compressing and continues to swing the magnetic cutter head 81. The slider 331 and the control rod 31 swing toward the outside of the lower nail barrel 20 together, thereby causing the second plug-in portion 3112 below the hinge shaft 313 to open the channel 21, and causing the first plug-in portion 3111 above the hinge shaft 313 to close the channel 21. By setting the slider 331 and the second elastic reset member 332, the collision force generated when the magnetic cutter head 81 is engaged with the clamping part 312 can be buffered, and the vibration of the barrel body 10 caused by the magnetic cutter head 81 during the nailing process can be alleviated, thereby reducing the vibration felt by the human body during the nailing process.

[0057] Further, in order to reduce the friction between the slider 331 and the clamping portion 312 during the sliding process of the slider 331 and improve the smoothness of the sliding, preferably, refer to Fig. 9 and Fig.10 In one embodiment of the present invention, a ball 34 is further disposed at the position where the clamping portion 312 abuts against the slider 331. The specific number and location of the ball 34 are not limited, as long as they can play a role in reducing friction when the slider 331 slides. Preferably, in this embodiment, the clamping portion 312 is rotatably connected to two balls 34 on the side away from the control rod 31, and the two balls 34 are symmetrically disposed on both sides of the U-shaped positioning groove 3121. The balls 34 are supported below the slider 331 and are slidably connected to the bottom surface of the slider 331.

[0058] See also Figure 4 and Figure 5 In an example of the nail extraction device 100 of the present invention, the cavity 11 includes a nail loading cavity 111 and a nail extraction cavity 112 which are interconnected. Along the height direction of the barrel body 10, the nail loading cavity 111 is located above the nail extraction cavity 112, and the bottom wall of the nail loading cavity 111 includes a downwardly inclined inclined surface 1111. The bottom wall of the nail loading cavity 111 may be an inclined surface 1111 structure as a whole, or a portion near the lower end may be an inclined surface 1111 structure. By providing the inclined surface 1111, it is easier for the screw 70 in the nail loading cavity 111 to slide down into the nail extraction cavity 112.

[0059] The inclined surface 1111 may be a conventional slope-shaped inclined surface structure, a spiral surface structure, or a combined inclined surface 1111 structure formed by connecting a plurality of different slopes. Preferably, in an example of the nail extraction device 100 of the present invention, the inclined surface 1111 is a spiral surface structure arranged around the axis of the cavity 11. Under the premise of meeting the requirements for the speed of the screw 70 sliding down along the spiral surface, the specific sizes of the spiral angle and the spiral rise angle of the spiral surface are not limited. By providing a spiral surface structure, when the screw 70 in the nailing cavity 111 slides down, the screw 70 can slide down in a spiral shape along the spiral surface, and then a smoother and more uniform deceleration process can be obtained during the sliding process, thereby reducing the impact generated when the screw 70 falls into the nail extraction cavity 112.

[0060] See also Figure 4 , Fig.11 and Fig.12 In an example of the nail extraction device 100 of the present invention, the nail extraction chamber 112 is provided with a guide portion 13, and the guide portion 13 guides the screw 70 that slides out of the nail loading chamber 111 to fall to the upper end port 211 in sequence along a preset path, and enters the channel 21 with the bolt head facing downward and the screw rod facing upward. The guide portion 13 can be an inclined slide structure connecting the nail extraction chamber 112 and the upper end port 211 of the lower nail barrel 20, or an inclined slide structure connecting the nail extraction chamber 112 and the upper end port 211 of the lower nail barrel 20. By providing the guide portion 13, the screw 70 in the nail loading chamber 111 can be guided to fall to the upper end port 211 along the preset path, thereby improving the accuracy of the falling position of the screw 70, thereby reducing the failure rate of the nail extraction device 100.

[0061] See also Figure 4 , Fig.11 and Fig.12In an example of the nail extraction device 100 of the present invention, the guide portion 13 includes a guide port 131 and a guide groove 132. The guide port 131 connects the nailing cavity 111 and the nail extraction cavity 112. The guide port 131 has an entrance and an exit, and the cross-section of the guide port 131 gradually shrinks from the entrance to the exit. The end of the guide port 131 with a larger cross-section faces the nailing cavity 111, and the end with a smaller cross-section faces the nail extraction cavity 112, so as to guide the screw 70 entering from the entrance to slide out from the exit in the axial direction. The guide port 131 includes but is not limited to a conical trumpet structure. Preferably, in this embodiment, the guide port 131 is a conical structure. Since the wall surface of the conical guide port 131 is relatively smooth, the screw 70 can pass through more smoothly. The two ends of the guide groove 132 are connected to the outlet of the guide port 131 and the upper end port 211 respectively. The guide groove 132 has a slope. The guide groove 132 can be provided with a slope in a local section in the length direction, or can be tilted downward from the guide port 131 as a whole and connected to the upper end port 211 to form a slope, as long as the screw 70 falling on the guide groove 132 can slide down to the position of the upper end port 211 under the action of gravity when passing through the slope. The guide groove 132 can be any structure that can receive the screw 70 that slides out of the outlet of the guide port 131, such as a U-shaped guide groove, a T-shaped guide groove or a V-shaped guide groove, and can enable the screw 70 to slide down along the guide groove 132 to the upper end port 211 in sequence with the small end downward. It should be noted that the small end is the screw end of the screw 70. By providing the guide opening 131 and the guide groove 132 , not only can the screw 70 be guided to slide to the upper end port 211 along the set trajectory, but the screw 70 can also slide to the upper end port 211 in sequence, preparing for subsequent screws 70 to enter the channel 21 in sequence.

[0062] Although the specific structure of the guide groove 132 is not limited under the condition that the guiding requirements of the screw 70 during the falling process are met, it is preferred to refer to Fig.11 and Fig.12 In an example of the nail removal device 100 of the present invention, the guide groove 132 includes two spiral guide rails 133 arranged in parallel around the axis of the barrel body 10, and the radial gap between the two spiral guide rails 133 is larger than the screw rod diameter of the screw 70 and smaller than the bolt head diameter of the screw 70. When the screw 70 slides out axially from the guide opening 131 and enters the guide groove 132, the screw rod of the screw 70 is stuck in the radial gap between the two spiral guide rails 133 under the action of its own weight, and the bolt head of the screw 70 is stopped above the two spiral guide rails 133, so that the screw 70 is arranged in sequence with the bolt head facing up and the screw rod facing down during the process of sliding down on the guide groove 132, so as to prepare for the subsequent screws 70 to enter the channel 21 in sequence.

[0063] It should be noted that, in order to make the screw 70 that slides out of the guide opening 131 better enter the guide groove 132 and slide down smoothly along the guide groove 132, preferably, refer to Fig.11 and Fig.12 In one embodiment of the present invention, after the lower end of the spiral slope arranged on the bottom wall of the nail cavity 112 is connected with the upper ends of the two spiral guide rails 133, a same spiral falling channel 21 from top to bottom is provided for the screw 70.

[0064] Furthermore, in order to make the screw 70 in the nailing cavity 111 slide to the guide opening 131 better, in one embodiment of the present invention, refer to Figure 5 When the inclined surface 1111 is a helical surface structure arranged around the axis of the cavity 11, a guide channel 1112 is also arranged on the side of the helical surface facing the stapling cavity 111, and the guide channel 1112 is a spiral groove structure consistent with the helical angle of the helical surface. The guide channel 1112 extends along the upper and lower ends of the inclined surface 1111, and the lower end of the guide channel 1112 is correspondingly connected to the guide opening 131. The cross-sectional size of the guide channel 1112 is larger than the bolt head diameter of the screw 70 and smaller than the screw length of the screw 70, so as to play an axial guiding role for the screw 70 falling into the guide channel 1112, so that the screw 70 can complete the preliminary adjustment of the posture before falling into the guide opening 131, so as to enter the guide opening 131 more smoothly.

[0065] See also Figure 6 , Fig.11 and Fig.12 In an example of the nail removal device 100 of the present invention, a notch 2111 is provided at the connection position between the upper end port 211 and the guide groove 132. The notch 2111 is located below the guide groove 132, and the width of the notch 2111 corresponds to the width of the guide groove 132. Specifically, the two spiral guide rails 133 are respectively connected to the two sides of the width of the notch 2111, and the width of the notch 2111 corresponds to the radial gap between the two spiral guide rails 133, so that the screw 70 sliding out of the guide groove 132 can pass through the notch 2111 in the width direction. The height of the notch 2111 is less than the length of the screw rod of the screw 70, that is, the height of the notch 2111 is less than the length of the screw rod of the screw 70 on the guide groove 132 extending below the guide groove 132, so that the notch 2111 can stop the small end of the screw 70 sliding to the notch 2111, and then under the action of the falling inertia, the screw 70 flips over and enters the channel 21 with the bolt head facing down and the screw rod facing up. It should be noted that the specific height of the notch 2111 to form a stop for the screw rod of the screw 70 is not limited, as long as the screw 70 can be flipped into the channel 21 with the bolt head facing down and the screw rod facing up after passing through the notch 2111.

[0066] Since the height of the notch 2111 is a fixed value, the position of the notch 2111 that forms a stop for the falling screw 70 is fixed in the height direction. When a long screw 70 falls to the notch 2111, there is a probability that the stop position is too high and the screw 70 cannot smoothly fall into the channel 21. In view of this, preferably, refer to Fig.11 and Fig.13 In an example of the nail ejecting device 100 of the present invention, the nail ejecting device 100 further includes a ejecting rod 40, which is slidably connected to the lower nail barrel 20 and moves up and down along the axial direction of the lower nail barrel 20 to flip the screw 70 stopped outside the notch 2111 into the upper end port 211. The outer wall of the lower nail barrel 20 is provided with two guide blocks 25, and the two guide blocks 25 are spaced apart in the axial direction. The ejecting rod 40 is inserted into the two guide blocks 25 and slides up and down relative to the guide blocks 25. The upper end of the ejector rod 40 passes through the partition 142 and penetrates into and out of the partition 142 in the up and down directions; the upper end of the ejector rod 40 is located below the guide groove 132, and at least partially below the screw rod of the screw 70 stopped at the notch 2111, so that when the ejector rod 40 moves upward, the screw 70 here can be lifted and the screw 70 can be flipped into the upper end port 211, thereby solving the problem that the screw 70 cannot be smoothly flipped into the upper end port 211 when it is long, thereby increasing the use range of the nail ejecting device 100.

[0067] For further information, see Fig.13 In order to reduce the jamming phenomenon of the ejecting rod 40 during the falling process, a return spring 41 can also be provided between the two guide blocks 25 of the ejecting rod 40. When the ejecting rod 40 moves upward to eject the material, the return spring 41 is compressed. When the ejecting rod 40 moves downward, the return spring 41 releases the elastic force to push the ejecting rod 40 to move downward quickly to disengage from the stop position of the notch 2111, so that the subsequent screw 70 on the guide groove 132 can slide smoothly down to the notch 2111.

[0068] In an example of the nail removal device 100 of the present invention, please refer to Figure 3 and Fig.13 , the nail-pulling device 100 also includes a first transmission shaft 51, which is rotatably connected to the barrel body 10 and is arranged parallel to the lower nail barrel 20. The first transmission shaft 51 can be rotated manually or electrically driven by an external motor. The first transmission shaft 51 can be completely arranged in the barrel body 10, or it can be partially arranged in the barrel body 10 and partially extend outside the barrel body 10. The first transmission shaft 51 and the barrel body 10 can be rotatably connected by a slewing bearing, or by a shaft hole clearance fit. Preferably, in the present embodiment, the first transmission shaft 51 is arranged in the barrel body 10, and the two ends of the first transmission shaft 51 are rotatably connected to the partition plate 142 and the mounting plate 141 respectively by slewing bearings.

[0069] See also Fig.13 , the outer peripheral surface of the first transmission shaft 51 is provided with a spiral surface 511. When the first transmission shaft 51 reciprocates, the spiral surface 511 is supported on the lower end of the ejector rod 40, and drives the ejector rod 40 to move up and down along the axial direction of the lower nail barrel 20 as the spiral surface 511 rotates. It should be noted that the spiral angle, spiral lead angle and number of circles around the transmission shaft of the spiral surface 511 are not limited, as long as the spiral surface 511 drives the ejector rod 40 to move up and down to meet the ejection height requirement when the first transmission shaft 51 reciprocates once. By providing the spiral surface 511 on the first transmission shaft 51, the ejector rod 40 can be reciprocated up and down in the axial direction of the lower nail barrel 20, and the structure is simple and the operation is convenient.

[0070] For further information, see Fig.13 and Fig.14 In an example of the nail ejecting device 100 of the present invention, the nail ejecting device 100 further includes a first transmission assembly 52, and the first transmission shaft 51 is transmission-connected to the slider 331 through the first transmission assembly 52, so that when the magnetic cutter head 81 pushes the slider 331 to slide relative to the control rod 31, the first transmission assembly 52 can drive the first transmission shaft 51 to rotate. The first transmission assembly 52 can be any transmission mechanism that can convert the sliding of the slider 331 into the rotation of the first transmission shaft 51, such as a gear rack structure, a ball screw structure, etc. By setting the first transmission assembly 52, the sliding of the slider 331 can be directly converted into the rotation of the first transmission shaft 51, thereby driving the ejecting rod 40 to move up and down. Such a setting can realize the linkage control between the up and down movement of the ejecting rod 40 and the sliding of the slider 331, and simplify the internal structure design of the nail ejecting device 100.

[0071] Preferably, see Figures 13 to 15In an example of the nail removal device 100 of the present invention, the first transmission assembly 52 includes a gear 521 and a rack 522. The gear 521 is coaxially mounted on the end of the first transmission shaft 51 facing the slider 331, and the gear 521 slides up and down along the axial direction of the first transmission shaft 51. Specifically, a plurality of axially oriented slide grooves 512 are arranged in the circumferential direction at the position where the gear 521 is mounted on the first transmission shaft 51. The gear 521 is penetrated on the first transmission shaft 51, and a plurality of protrusions 5211 corresponding to the slide grooves 512 are arranged on the hole wall of the central mounting hole of the gear 521. When the gear 521 is mounted on the first transmission shaft 51, the plurality of protrusions 5211 are respectively clamped in the slide grooves 512, and the protrusions 5211 can slide up and down relative to the slide grooves 512. The rack 522 is installed on the side of the slider 331 facing the gear 521. The rack 522 can be fixedly connected to the slider 331 by bolts or welded to the slider 331. The gear 521 is meshed with the rack 522. When the magnetic cutter head 81 pushes the slider 331 to slide toward the control rod 31, the rack 522 drives the gear 521 to rotate, thereby driving the first transmission shaft 51 to rotate. When the magnetic cutter head 81 abuts against the bayonet 3311 and the U-shaped positioning groove 3121 at the same time, the slider 331 swings with the control rod 31. When the gear 521 swings with the rack 522, the protrusion 5211 on the gear 521 slides upward relative to the slide groove 512, thereby maintaining the meshing relationship between the gear 521 and the rack 522 during the swinging process of the rack 522.

[0072] See also Figure 4 , Fig.12 and Fig.13In an example of the nail ejection device 100 of the present invention, the nail ejection device 100 also includes a second transmission shaft 53 and a second transmission assembly 54. The second transmission shaft 53 is rotatably connected to the barrel body 10 and is arranged parallel to the lower nail barrel 20. The upper end of the second transmission shaft 53 extends to the nailing cavity 111 and is fixedly connected with a stirring portion 60. The stirring portion 60 can be a plurality of levers, a plurality of paddle structures, etc. arranged in the circumferential direction of the second transmission shaft 53, so as to be able to stir the screws 70 in the nailing cavity 111 when the second transmission shaft 53 rotates. The lower end of the second transmission shaft 53 extends to the position of the mounting plate 141 after passing through the partition 142, and is rotatably connected to the mounting plate 141. The second transmission shaft 53 can be coaxially arranged with the cavity 11, or it can be non-coaxially arranged. In this embodiment, preferably, the second transmission shaft 53 is coaxially arranged with the cavity 11, which can facilitate the positioning and installation of the second transmission shaft 53, and also make the stirring effect of the stirring part 60 on the screw 70 in the nail cavity 112 more uniform, and can cause the screws 70 in the cavity 11 to disturb each other, so that the screws 70 can enter between the two spiral guide rails 133 more smoothly from the guide port 131. The second transmission shaft 53 is rotatably connected to the first transmission shaft 51 through the second transmission assembly 54. The second transmission assembly 54 can be any mechanism that can realize the transmission connection between the first transmission shaft 51 and the second transmission shaft 53, such as gear transmission, pulley transmission, etc.

[0073] Preferably, see Figure 4 , Fig.12 and Fig.13 In this embodiment, the second transmission assembly 54 is a pulley transmission structure 50, and the second transmission assembly 54 includes a first pulley 541, a second pulley 542 and a transmission belt 543. The first pulley 541 and the second pulley 542 are respectively installed on the first transmission shaft 51 and the second transmission shaft 53, and the transmission belt 543 is tightly connected to the first pulley 541 and the second pulley 542. When the first transmission shaft 51 rotates, it drives the first pulley 541 to rotate, and the first pulley 541 drives the second pulley 542 to rotate through the transmission belt 543, and the second pulley 542 drives the second transmission shaft 53 to rotate, thereby realizing the rotation of the stirring part 60 in the nail-exiting cavity 112, and realizing the stirring of the screws 70 in the nail-exiting cavity 112. By setting up the second transmission assembly 54, a transmission connection between the first transmission shaft 51 and the second transmission shaft 53 can be achieved. There is no need to control the rotation of the first transmission shaft 51 and the second transmission shaft 53 separately, and linkage control between the two can be achieved, so that the coordination and synchronization between the first transmission shaft 51 and the second transmission shaft 53 are better, and the internal structural design of the barrel body 10 can be simplified to reduce control errors.

[0074] The nail removal device 100 provided in the present invention first loads the installation screw 70 into the nailing cavity 111, and the screw 70 located at the inclined surface 1111 of the nailing cavity 111 slides down to the guide opening 131, slides out axially through the guide opening 131, and enters the guide slot 512. The screw rod of the screw 70 located on the guide slot 512 is stuck in the radial gap between the two spiral guide rails 133 under the action of its own weight. During the sliding process of the screw 70, multiple screws 70 fall in sequence with the nut facing up and the screw rod facing down. When falling to the position of the notch 2111, the notch 2111 forms a stop for the small end of the screw 70, and then under the action of the falling inertia, the screw 70 flips down and enters the channel 21 with the bolt head facing down and the screw rod facing up. At this time, the channel 21 is in the initial state, that is, the first plug-in portion 3111 opens the channel 21, and the second plug-in portion 3112 closes the channel 21. The first screw 70 dropped into the channel 21 falls to the second plug-in portion 3112 along the axial direction and stays above the second plug-in portion 3112. The cycle is repeated until the channel 21 is filled with screws 70 in sequence, and the preparation for nailing is completed.

[0075] When the magnetic cutter head 81 needs to be nailed, the magnetic cutter head 81 is swung to the position of the bayonet 3311 on the slider 331, and the magnetic cutter head 81 pushes the slider 331 to slide toward the side of the control rod 31, and the second elastic reset member 332 is compressed. At the same time, the slider 331 drives the rack 522 to slide, and the rack 522 drives the gear 521 to rotate. The rotation of the gear 521 drives the first transmission shaft 51 to rotate, and the spiral surface 511 of the first transmission shaft 51 drives the ejecting rod 40 to move downward and disengage from the notch 2111 position. The magnetic cutter head 81 continues to swing in the same direction. When the magnetic cutter head 81 abuts against the bayonet 3311 and the U-shaped positioning groove 3121 at the same time, the slider 331 will push the lower end of the control rod 31 to swing toward the outer side of the lower nail barrel 20 under the elastic force of the second elastic reset member 332, the first elastic reset member 32 is compressed, the second plug-in portion 3112 opens the channel 21, and the first plug-in portion 3111 closes the channel 21, so that the screw 70 located between the first plug-in portion 3111 and the second plug-in portion 3112 is discharged from the lower end port 212 and is attracted and loaded with the magnetic cutter head 81. At the same time, when the first transmission shaft 51 rotates, the second transmission assembly 54 drives the second transmission shaft 53 to rotate, and the second transmission shaft 53 drives the stirring portion 60 to rotate to stir the screw 70 in the nail cavity 112. When the magnetic cutter head 81 attracts the loading screw 70, the magnetic cutter head 81 swings in the opposite direction, and the control rod 31 swings in the opposite direction under the elastic force of the first elastic reset member 32, so that the first plug-in portion 3111 reopens the channel 21, and the second plug-in portion 3112 closes the channel 21 again; at the same time, under the elastic force of the second elastic reset member 332, the slider 331 slides to the side away from the control rod 31, driving the rack 522 to move in the opposite direction, and then driving the gear 521 to rotate in the opposite direction, thereby driving the first transmission shaft 51 to rotate in the opposite direction, so that the spiral surface 511 of the first transmission shaft 51 drives the ejection rod 40 to move upward to lift the screw 70 located at the notch 2111, and make it fall into the channel 21, filling the vacancy caused by the missing screw 70 in the upper channel 21. At this point, the nailing action of the magnetic cutter head 81 is completed once, and this cycle is repeated to achieve multiple continuous nailing of the magnetic cutter head 81 during the installation process. It should be noted that the vibration generated by the electric screwdriver when nailing on the surface of the workpiece can drive the entire nail-removing device 100 to vibrate at a certain frequency and a certain amplitude, thereby promoting the screw 70 in the cavity 11 to enter from the guide port 131 into between the two spiral guide rails 133, thereby avoiding the screws 70 from getting stuck with each other or with other components.

[0076] From the above nailing process, it can be seen that the unexpected technical effect produced by the present invention is that during the entire nailing process, only the position of the magnetic cutter head needs to be moved to realize the sequential falling of the screws in the channel, thereby realizing the continuous nailing operation of the magnetic cutter head, and the operation is simple and convenient. In addition, since manual nail removal is not required during the entire nailing process and nailing process, the manual nail removal time can be saved and the nailing efficiency of the magnetic cutter head can be improved. This can not only reduce manual hand operation and improve the automation of nailing, but also reduce the distraction of the operator's attention and reduce the safety risks during the operation. Therefore, the present invention effectively overcomes some practical problems in the prior art and has a high utilization value and use significance. The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A nail-removing device, used in conjunction with a screwdriver having a magnetic bit, characterized in that: include: a barrel having a cavity for receiving the screw and a carrying connection portion for connection with a body part of an operator; A lower nail barrel is connected to the barrel body and has a channel for the screw to slide through along the axial direction; the upper end port of the channel extends into the barrel body and communicates with the cavity so that the screw can slide in along the axial direction; the lower end port of the channel is communicated with the outside and is open; A nail-out control device is arranged at the lower end of the channel; Wherein, the nail-out control device opens the lower end port when the magnetic cutter head reaches the set position so as to load the screw through the magnetic attraction of the magnetic cutter head, and closes the lower end port when the magnetic cutter head is removed from the set position; the nail-out control device comprises a first plug-in portion, a second plug-in portion and a control rod, along the height direction of the channel, the first plug-in portion is arranged above the second plug-in portion, the second plug-in portion is arranged at the lower end port, the barrel wall of the lower nail barrel is provided with a first plug-in interface and a second plug-in interface, the first plug-in interface corresponds to the first plug-in portion, the first plug-in portion can be movably plugged into the first plug-in interface and block the channel, the second plug-in interface corresponds to the second plug-in portion, the second plug-in portion can be movably plugged into the second plug-in interface and block the channel; the control rod is hingedly connected to the lower nail barrel, the lower nail barrel is provided with a rotating sleeve, the control rod realizes the swing of the control rod in the up and down directions by the rotation of the hinge shaft in the rotating sleeve, the first plug-in portion and the second plug-in portion are respectively connected to the control rod on both sides of the hinge shaft.

2. The nail removal device according to claim 1, characterized in that: The spacing distance between the first plug-in part and the second plug-in part along the axial direction of the lower nail barrel corresponds to the length of a single screw; when the magnetic tool head reaches the set position, it triggers the first plug-in part and the second plug-in part to alternately open the channel, so that after the screw between the first plug-in part and the second plug-in part is loaded onto the magnetic tool head, the screw above the first plug-in part is loaded between the first plug-in part and the second plug-in part.

3. The nail removal device according to claim 2, characterized in that: When the magnetic cutter head reaches the set position, it drives the control rod to swing, thereby driving the two plug-in parts to alternately open the channels.

4. The nail removal device according to claim 3, characterized in that: A first elastic reset member is arranged between one end of the control rod located above the hinge shaft and the wall of the lower nail barrel; one end of the control rod located below the hinge shaft extends to below the lower end port and is provided with a clamping portion corresponding to the magnetic cutter head.

5. The nail removal device according to claim 4, characterized in that: The nail removal control device also includes a buffer component, which includes a slider and a second elastic reset member. The slider is slidably connected to the clamping portion and has a clamp corresponding to the magnetic cutter head. The second elastic reset member is arranged between the slider and the control rod.

6. The nail removal device according to claim 3, characterized in that: The cavity comprises a nail loading cavity and a nail extraction cavity which are interconnected. Along the height direction of the barrel body, the nail loading cavity is located above the nail extraction cavity, and the bottom wall of the nail loading cavity comprises a downwardly inclined inclined surface.

7. The nail removal device according to claim 6, characterized in that: The inclined surface is a helical surface structure arranged around the axis of the cavity.

8. The nail removal device according to claim 6, characterized in that: The nail-out cavity is provided with a guide portion, which guides the screws sliding out of the nail-installing cavity to fall to the upper end port in sequence along a preset path, and enter the channel with the bolt head facing downward and the screw rod facing upward.

9. The nail removal device according to claim 8, characterized in that: The guide portion includes a guide opening and a guide groove, the guide opening connects the nail loading cavity and the nail extraction cavity, the cross-section of the guide opening gradually shrinks from the entrance to the exit, so as to guide the screw entering from the entrance to slide out from the exit in the axial direction; the two ends of the guide groove pass through and respectively connect the guide opening and the upper end port, and the guide groove has a slope so that the screws can slide downward along the guide groove to the upper end port position in sequence under the action of gravity.

10. The nail removal device according to claim 9, characterized in that: The guide groove comprises two spiral guide rails which are arranged in parallel around the axis of the barrel body, and the radial gap between the two guide rails is larger than the screw rod diameter of the screw and smaller than the bolt head diameter of the screw.

11. The nail removal device according to claim 9, characterized in that: A notch is provided at the connection position between the upper end port and the guide groove, and the notch is located below the guide groove. The width of the notch corresponds to the width of the guide groove, and the height of the notch is smaller than the screw rod length of the screw, so as to stop the small end of the screw sliding to the notch, so that the screw falls and enters the channel with the bolt head facing down and the screw rod facing up.

12. The nail removal device according to claim 11, characterized in that: The nail ejecting device also includes a ejecting rod, which is slidably connected to the lower nail barrel and moves up and down along the axial direction of the lower nail barrel to eject the screw stopped outside the notch into the upper end port.

13. The nail removal device according to claim 12, characterized in that: The nail ejecting device also includes a first transmission shaft, which is rotatably connected to the barrel body and is arranged parallel to the lower nail barrel; a spiral surface is arranged on the outer peripheral surface of the transmission shaft, and when the first transmission shaft rotates reciprocatingly, the spiral surface supports the lower end of the ejecting rod to move up and down along the axial direction of the lower nail barrel.

14. The nail removal device according to claim 13, characterized in that: The nail ejection device also includes a first transmission component, and the nail ejection control device includes a slider, which is slidably installed at the lower end of the control rod and slides relative to the control rod under the push of the magnetic cutter head. The first transmission shaft is connected to the slider through the first transmission component to drive the first transmission shaft to rotate when the slider slides.

15. The nail removal device according to claim 14, characterized in that: The first transmission assembly includes a gear and a rack. The gear is coaxially mounted on the end of the first transmission shaft and slides along the axial direction of the first transmission shaft. The rack is mounted on the slider and meshes with the gear.

16. The nail removal device according to claim 13, characterized in that: The nail removal device also includes a second transmission shaft and a second transmission assembly, the second transmission shaft is rotatably connected to the barrel body and is arranged parallel to the lower nail barrel; the upper end of the second transmission shaft extends to the nailing cavity and is fixedly connected to a stirring part, and the second transmission shaft is rotatably connected to the first transmission shaft through the second transmission assembly.

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