A screw feeding device

Abstract

The screw feeding device belongs to the technical field of machining tools and is used for feeding screws into the lock sleeve of an electric screwdriver body. The device comprises a base frame, an upper frame and a lower frame arranged oppositely on one side of the base frame, a threaded hole arranged in the upper frame, a double-headed main shaft motor arranged below the upper frame, a threaded section arranged on the upper main shaft and matched with the threaded hole, a guide member arranged on the main shaft motor and sliding on the upper frame, a lower main shaft arranged on the lower frame, a storage bin arranged on the lower main shaft, a distribution member arranged in the lower frame and capable of rotating relative to the storage bin, a lower guide rail extending to the lower side of the base frame and arranged on the lower frame, and a discharge port of the distribution member communicated with the lower guide rail. The main shaft motor moves up and down relative to the upper frame during operation. The screws in the storage bin are fed into the lower guide rail one by one through the distribution member. The screws at the end of the lower guide rail are fed into the lock sleeve of the electric screwdriver body through the up-and-down movement of the main shaft motor.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mechanical processing tools, in particular to a screw feeding device. BACKGROUND

[0002] A server is a kind of computer, which runs faster, has higher load, and is more expensive than ordinary computers. The server provides computing or application services for other clients (such as PC, smart phone, ATM terminal, even large equipment such as train system) in the network. The server has high-speed CPU operation ability, long-time reliable operation, powerful I / O external data throughput capacity, and better scalability.

[0003] In the server or PC production and assembly process, many processes need to lock the screw operation. The screw used is a T-shaped structure screw with a screw cap. There are two ways to lock the screw now, one is manual locking, and the other is machine locking. Whether it is manual or machine locking, there is a process of feeding the screw to be locked to the electric drill head in the operation process. The process is a magnetic suction type suction, and the purpose is also to facilitate the quick separation of the electric drill head and the screw after the locking operation is completed. Manual screw feeding is to send the screw to the electric drill head by hand, and machine locking is to feed the screw to the machine electric drill head by pneumatic or electric method.

[0004] The above two screw feeding methods have the following problems:

[0005] a. Manual screw feeding can only feed the second screw after the electric drill locking is completed. The efficiency is low.

[0006] b. When manually feeding the screw, the screw is easy to fall into the machine, causing material damage or machine abnormality or quality risk;

[0007] c. When manually feeding the screw, the screw is easy to fall off, causing material loss and increasing material cost. SUMMARY

[0008] In order to solve the problems of low efficiency and easy screw falling in the prior art manual screw feeding, the present application provides a screw feeding device.

[0009] The present application is realized by the following technical solutions:

[0010] The utility model provides a screw feeding device for feeding screw to the lock sleeve of electric driver body, which comprises a base frame, the upper and lower opposite upper frame and lower frame are arranged on one side of the base frame, and a threaded hole is arranged in the upper frame; a double-headed main shaft motor is arranged below the upper frame, the upper end of the upper main shaft extends into the threaded hole, and a threaded section is arranged on the upper main shaft and matched with the threaded hole; the stator shell of the main shaft motor is slidably arranged on the upper frame through a guide piece; a storage bin is arranged on the lower main shaft; a distribution piece capable of rotating relative to the storage bin is connected to the lower part of the storage bin, the distribution piece is arranged in the lower frame, a discharging guide rail extending below the base frame is slidably arranged on the lower frame, and the discharging guide rail is communicated with the discharge port of the distribution piece.

[0011] The electric driver body is placed on the base frame, the upper main shaft is matched with the threaded hole of the upper frame, and the upper main shaft moves up and down relative to the upper frame through the guide piece during the operation of the main shaft motor; the screws in the storage bin enter the discharging guide rail one by one through the distribution piece, and when the screw slides down to the end of the discharging guide rail, the screw at the end of the discharging guide rail is driven into the lock sleeve of the electric driver body through the up and down movement of the main shaft motor.

[0012] Further improvements of the utility model include that a guide rail groove is arranged in the upper frame, a sliding block is slidably arranged in the guide rail groove, a push rod is arranged on the side of the sliding block close to the base frame, a semicircular lifting groove is arranged on the side of the sliding block away from the push rod, a semicircular groove opposite to the lifting groove is arranged on the inner wall of the guide rail groove, threads are arranged on the inner walls of the lifting groove and the semicircular groove, and the lifting groove and the semicircular groove form a threaded hole in cooperation; an operating wrench is rotatably arranged on the base frame between the upper frame and the lower frame; and the upper end of the operating wrench is elastically hinged to the outer wall of the base frame. By pressing the operating handle, the upper end of the operating wrench acts on the push rod, the sliding block slides in the guide rail groove, and finally the lifting groove and the semicircular groove are combined into a threaded hole with threads, which is matched with the threaded section of the upper main shaft, thereby facilitating the up and down movement of the main shaft motor; in the initial state, the upper end of the operating handle is in contact with the base frame.

[0013] Further improvements of the utility model include that elastic members can be additionally arranged on the sliding blocks on both sides of the lifting groove. In the initial state of the sliding block, i.e. when the push rod is not subjected to external force, the elastic members can leave a certain gap between the lifting groove and the semicircular groove.

[0014] Further improvements of the utility model include that a motor switch sensing piece capable of controlling the main shaft motor is arranged on one side of the upper frame, the motor switch sensing piece is located at the initial position of the movement of the push rod to the semicircular groove, and the motor switch sensing piece is located on the track of the movement of the upper end of the operating wrench. When the upper end of the operating wrench passes through the motor switch sensing piece, the main shaft motor is driven.

[0015] The further improvement of the present application is that the lower end of the base frame can be installed with the electric wrench body, and the side wall of the base frame is provided with an electric wrench switch button corresponding to the lower end of the operating wrench. The operating wrench is operated, and the upper end of the operating wrench triggers the motor switch sensing element and the push rod in sequence, and when the lifting groove and the semicircular groove are combined into a complete threaded hole, the lower end of the operating wrench is continuously installed until the lower end of the operating wrench is in contact with the electric wrench switch button, so that the operation of the electric wrench body is realized.

[0016] The further improvement of the present application is that the storage bin is provided with a direction adjusting assembly capable of arranging the direction of the screw. By using the direction adjusting assembly, the direction of the screw in the storage bin can be adjusted, that is, the direction of the screw is adjusted to be that the nut part is on the top and the stud part is on the bottom.

[0017] The further improvement of the present application is that the direction adjusting assembly comprises a screening cone, the screening cone is sleeved on the lower main shaft and rotates around the lower main shaft, the lower side of the screening cone is provided with a screening block, the top surface of the screening block is provided with an annular screw groove, the screw groove is provided with an adjusting transmission hole vertically penetrating through the screening block, the upper side of the adjusting transmission hole is provided with a direction control rod corresponding to the adjusting transmission hole, and the direction control rod is arranged on the screening block on the inner side of the screw groove. The conical surface of the screening cone forms downward guiding to the screw in the storage bin, and the direction control rod on the screening block adjusts the direction of the screw during the relative rotation of the screening block and the screening cone, and the screw with the nut on the top moves through the adjusting transmission hole after the adjustment.

[0018] The further improvement of the present application is that the inner ring of the screening cone is provided with a first tooth groove, the first tooth groove is provided with a coaxial first gear a, the first tooth groove is provided with a planetary gear ring, the planetary gear ring is rotatably provided with a first gear b matched with the first tooth groove, the inner ring of the screening cone is provided with a clamping protrusion, and the planetary gear ring is provided with a turning protrusion matched with the clamping protrusion. The screening cone driven by the planetary gear is helpful to improve the accuracy of rotation, when the screw in the storage bin falls on the top surface of the screening cone during discharging, the screw may be embedded in the inner ring, the planetary gear ring can block the screw from entering the inner ring, but the screw may be stuck between the planetary gear ring and the first tooth groove, or between the planetary gear ring and the first gear a, with the screw being stuck, the planetary gear ring rotates, after the clamping protrusion contacts with the turning protrusion, the screening cone is forced to rotate reversely, so that the screw is pushed out and slides downward along the inclined surface of the screening cone.

[0019] The further improvement of the present application is that the conical surface of the screening cone is uniformly provided with a screening direction groove. The screening direction groove guides the trajectory direction of the screw on the surface of the screening cone, which is helpful to realize the guiding operation of the screw.

[0020] A further improvement of the present invention is that the bottom surface of the screening cone is provided with a control groove that cooperates with the control rod, and one end of the control groove passes through the screening alignment groove. After the control rod passes through the control groove, it acts on the screw that has passed through the screening alignment groove, which helps to improve the accuracy of screw alignment.

[0021] A further improvement of the present invention is that the control rod is in the form of an L-shape, and the horizontal section of the control rod is spaced apart from the top surface of the screening block and covers the top of the adjustment transmission hole; the free end of the horizontal section of the control rod can extend into the screening trough. When the screw moves downward through the screening channel, it temporarily accumulates in the channel because the top surface of the screen contacts the bottom surface of the screening cone. As the screening cone and screening block rotate relative to each other, the directional control rod adjusts the screw in the screening channel. When the screw nut faces upward, the stud portion enters the screw slot first. At this time, the nut is below the directional control rod due to its height and does not contact it, but the nut portion remains in the screening channel. When the screening cone rotates relative to the screening block until the screw passes through the adjustment transmission hole, the screw slides down while maintaining the nut-upward posture. When the screw nut faces downward, the nut portion temporarily contacts the top surface of the screening block. At this time, no part of the screw enters the screw slot. As the screening cone and screening block rotate relative to each other, the directional control rod contacts the stud portion of the screw and flips it. The flipped stud portion of the screw enters the screw slot, thus completing the screw adjustment operation.

[0022] A further improvement of the present invention includes a rotating cover disposed above the screening cone. The rotating cover is sleeved on the lower main shaft and driven to rotate circumferentially by the lower main shaft. The rotating cover has a feeding port, and at least two guide posts a are provided on the inner wall of the rotating cover below the feeding port. A guide ring is provided between the rotating cover and the screening cone, and a wave-shaped guide rail is provided on the circumferential surface of the guide ring to cooperate with the at least two guide posts a. During the rotation of the rotating cover, the guide posts a on the inner wall cooperate with the wave-shaped guide rail on the guide ring to realize the up-and-down movement of the guide ring, thereby allowing the screws to slide towards the screening cone after passing through the guide ring. The principle is that the up-and-down movement of the guide ring allows the guide ring to separate and contact with the screening cone, thereby achieving the accumulation and unblocking of the screws between them.

[0023] A further improvement of the present invention is that the inner ring of the rotating cover is provided with a second toothed groove, and a second gear a is coaxially arranged in the second toothed groove. Multiple second gears b mesh between the second gear a and the second toothed groove. The lower main shaft passes through the axis of the second gear a and drives the second gear a to rotate within the inner ring of the rotating cover. The rotation of the rotating cover is achieved through the second gears b, which helps to achieve precision and stability in rotation.

[0024] A further improvement of the present invention is that the upper part of the inner wall of the aforementioned guide ring is provided with a conical hole section, and a cylindrical hole section is provided below the conical hole section; the screening cone is slidably disposed within the cylindrical hole section. In the initial state, the guide ring is located within the cylindrical hole section, and the screws are accumulated within the conical hole section; in the use state, i.e., when the guide ring is separated from the screening cone, the screening cone is located in the lower section of the cylindrical hole section, and the screws in the conical hole section can enter the cylindrical hole section and slide down along the screening groove.

[0025] A further improvement of the present invention is that the aforementioned material distribution component has a first material distribution hole at its center, and a plurality of inclined second material distribution holes are evenly distributed around the first material distribution hole in its circumferential direction; the upper port of the second material distribution hole corresponds to the adjustment transmission hole, and the lower port of the second material distribution hole communicates with the lower part of the first material distribution hole. The screws, whose direction has been adjusted in the adjustment transmission hole, are received by the plurality of second material distribution holes and fall into the first material distribution hole, and then sequentially enter the unloading guide rail.

[0026] A further improvement of the present invention is that the first dispensing hole is provided with a rotating nozzle that is linked to the lower central shaft, and a feeding groove corresponding to the second dispensing hole is formed on the lower circumferential surface of the rotating nozzle. The rotating nozzle can rotate relative to the dispensing component, so the feeding groove on the rotating nozzle can allow the screws passing through the second dispensing hole to enter the feeding guide rail one by one.

[0027] A further improvement of the present invention is that the aforementioned material-splitting component is assembled from multiple material-splitting blocks, the number of which is the same as the number of second material-splitting holes, and the second material-splitting holes are disposed on the material-splitting blocks; one splicing surface of each material-splitting block is provided with a dovetail-shaped boss, and the other splicing surface is provided with an insert groove that mates with the boss. The assembly of the material-splitting component is facilitated through the cooperation of multiple material-splitting blocks, while the locking of adjacent material-splitting blocks is achieved through the cooperation of the boss and the insert groove.

[0028] A further improvement of the present invention includes an upper cylinder body disposed below the upper frame, the top surface of which has a motor cavity capable of accommodating the spindle motor. The upper frame has a guide hole, and the upper cylinder body has a guide post b that mates with the guide hole. The mate between the guide hole and the guide post b helps to prevent axial rotation of the upper cylinder body during its vertical movement after accommodating the spindle motor.

[0029] A further improvement of the present invention includes a connecting groove on the outer wall of the upper cylinder body, and a lower cylinder body below the upper cylinder body capable of supporting the dispensing component. The lower cylinder body has a dispensing cavity capable of accommodating the dispensing component, and a connecting arm extending into the connecting groove. By supporting the dispensing component with the lower cylinder body, the excessive spacing between the components of the upper and lower cylinder bodies is prevented from causing the screws to tilt.

[0030] A further improvement of the present invention is that the lower frame is provided with a mounting groove for accommodating the lower cylinder.

[0031] A further improvement of the present invention is that the aforementioned feeding guide rail includes a vertical section, the lower end of which has an inclined section that slopes downwards towards the base frame, and a feeding port is provided at the end of the inclined section away from the vertical section. The vertical section has a hollow internal structure, which helps the screw that has completed its orientation adjustment to slide vertically downwards; the cross-section of the inclined section has a structure with a T-slot, and an anti-loosening cover plate is provided above the T-slot, which helps to ensure the screw slides in the correct direction; the inner wall of the feeding port is evenly distributed with multiple supporting springs, which are embedded in the inner wall of the feeding port, and the cooperation of the multiple supporting springs helps to support the nut portion of the screw.

[0032] As can be seen from the above technical solution, the beneficial effects of the present invention are: using the base frame as a carrier, the electric screwdriver body can be placed on the base frame, and the upper spindle moves up and down relative to the upper frame through the threaded hole of the upper frame body during the operation of the spindle motor; the screws in the storage bin enter the feeding guide rail one by one through the feeding component, and when the screw slides down to the end of the feeding guide rail, the up and down movement of the spindle motor drives the screw at the end of the feeding guide rail to enter the locking sleeve of the electric screwdriver body. Attached Figure Description

[0033] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.

[0035] Figure 2 This is a schematic diagram of the frame structure according to a specific embodiment of the present invention.

[0036] Figure 3 This is a schematic diagram of the spindle motor according to a specific embodiment of the present invention.

[0037] Figure 4 This is a schematic diagram of the slider structure according to a specific embodiment of the present invention.

[0038] Figure 5 This is a schematic diagram of the upper cylinder structure according to a specific embodiment of the present invention.

[0039] Figure 6 This is a schematic diagram of the lower cylinder structure according to a specific embodiment of the present invention.

[0040] Figure 7This is a first schematic diagram of the rotating cover according to a specific embodiment of the present invention.

[0041] Figure 8 This is a second schematic diagram of the rotating cover according to a specific embodiment of the present invention.

[0042] Figure 9 This is a schematic diagram of the material guiding ring according to a specific embodiment of the present invention.

[0043] Figure 10 This is a first schematic diagram of a screening cone according to a specific embodiment of the present invention.

[0044] Figure 11 This is a second schematic diagram of a screening cone according to a specific embodiment of the present invention.

[0045] Figure 12 This is a third schematic diagram of the screening cone according to a specific embodiment of the present invention.

[0046] Figure 13 This is a first schematic diagram of the screening block according to a specific embodiment of the present invention.

[0047] Figure 14 This is a second schematic diagram of the screening block according to a specific embodiment of the present invention.

[0048] Figure 15 This is a schematic diagram of the material distribution structure according to a specific embodiment of the present invention.

[0049] Figure 16 This is a schematic diagram of the material distribution block structure according to a specific embodiment of the present invention.

[0050] Figure 17 This is a schematic diagram of the material distribution block and rotating nozzle structure in a specific embodiment of the present invention.

[0051] Figure 18 This is a schematic diagram of the rotating nozzle according to a specific embodiment of the present invention.

[0052] Figure 19 This is a schematic diagram of the feeding guide rail according to a specific embodiment of the present invention.

[0053] Figure 20 This is a schematic diagram of the feeding port according to a specific embodiment of the present invention.

[0054] In the attached diagram: 10. Frame; 11. Upper frame; 111. Guide rail groove; 112. Slider; 1121. Lifting groove; 113. Push rod; 114. Semicircular groove; 115. Guide hole; 12. Lower frame; 121. Mounting groove; 13. Motor switch sensor; 14. Electric screwdriver switch button; 20. Operating handle; 30. Electric screwdriver body; 40. Storage bin; 41. Rotating cover; 411. Feed port; 412. Guide post a; 413. Second toothed groove; 414. Second gear a; 415. Second gear b; 42. Guide ring; 421. Wave guide rail; 422. Conical hole section; 423. Cylindrical hole section; 43. Screening cone; 431. Screening directional groove; 432. Directional control groove; 433. First toothed groove; 434. First gear a; 435. 436. First gear b, planetary gear ring, 437. Locking protrusion, 438. Steering protrusion, 44. Screening block, 441. Directional control rod, 442. Screw groove, 443. Adjustment transmission hole, 45. Material distribution component, 451. Material distribution block, 452. First material distribution hole, 453. Boss, 454. Embedded groove, 455. Second material distribution hole, 46. Rotary nozzle, 461. Feeding groove, 50. Discharge guide rail, 51. Vertical section, 52. Inclined section, 521. Anti-detachment cover plate, 53. Feeding port, 531. Support spring, 60. Upper cylinder body, 61. Connecting groove, 62. Motor cavity, 63. Guide column b, 70. Lower cylinder body, 71. Material distribution inner cavity, 72. Connecting arm, 80. Main shaft motor, 81. Upper section main shaft, 82. Lower section main shaft, 83. Threaded section. Detailed Implementation

[0055] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0056] As attached Figure 1 As shown, this invention discloses a screw feeding device for feeding screws into the locking sleeve of an electric screwdriver body 30. The device includes a base frame, the lower end of which the electric screwdriver body 30 can be mounted, and an electric screwdriver switch button 14 is provided on the side wall of the base frame. Operating the electric screwdriver switch button 14 drives the operation of the electric screwdriver body 30.

[0057] As attached Figures 1-4As shown, the base frame has an upper frame 11 and a lower frame 12 facing each other on one side. The upper frame 11 has a guide rail groove 111, and a slider 112 slides within the guide rail groove 111. A push rod 113 is located on the side of the slider 112 closest to the base frame. A semi-circular lifting groove 1121 is located on the side of the slider 112 facing away from the push rod 113. A semi-circular groove 114, opposite to the lifting groove 1121, is formed on the inner wall of the guide rail groove 111. Both the lifting groove 1121 and the semi-circular groove 114 have threads on their inner walls, and the lifting groove 1121 and the semi-circular groove 114 cooperate to form a threaded hole. An operating wrench is rotatably mounted on the base frame between the upper frame 11 and the lower frame 12; the lower part of the operating wrench is elastically hinged to the outer wall of the base frame. By pressing the operating handle 20, the upper end of the operating wrench acts on the push rod 113, causing the slider 112 to slide within the guide groove 111. This ultimately forms a threaded hole where the lifting groove 1121 and the semi-circular groove 114 are joined together. This threaded hole engages with the threaded section 83 of the upper spindle 81, facilitating the up-and-down movement of the spindle motor 80. Initially, the upper end of the operating handle 20 is in contact with the base frame. Elastic elements can also be added to the sliders 112 on both sides of the lifting groove 1121. This allows a certain gap to remain between the lifting groove 1121 and the semi-circular groove 114 under the action of the elastic elements, even when the slider 112 is in its initial state (i.e., when the push rod 113 is not under external force).

[0058] In this embodiment, elastic elements can be added to the sliders 112 on both sides of the lifting groove 1121. This allows the lifting groove 1121 and the semi-circular groove 114 to maintain a certain gap under the action of the elastic elements when the slider 112 is in its initial state, i.e., when the push rod 113 is not subjected to external force.

[0059] As attached Figure 3 As shown, a motor switch sensor 13 capable of controlling the spindle motor 80 is provided on one side of the upper frame 11. The motor switch sensor 13 is located at the initial position when the push rod 113 moves towards the semi-circular groove 114. An operating wrench is rotatably mounted on the base frame between the upper frame 11 and the lower frame 12; the lower part of the operating wrench is elastically hinged to the outer wall of the base frame. The motor switch sensor 13 is located on the trajectory of the upper part of the operating wrench. When the upper end of the operating wrench passes the motor switch sensor 13, it drives the spindle motor 80. To operate the operating wrench, the upper end of the operating wrench first triggers the motor switch sensor 13 and the push rod 113 in sequence. After the lifting groove 1121 and the semi-circular groove 114 are assembled into a complete threaded hole, the lower end of the operating wrench is installed until the lower end of the operating wrench contacts the electric screwdriver switch button 14, thereby realizing the operation of the electric screwdriver body 30.

[0060] As attached Figure 3As shown, a dual-headed spindle motor 80 is located below the upper frame 11. The upper end of the upper spindle 81 extends into a threaded hole, and the upper spindle 81 has a threaded section 83 that mates with the threaded hole. The stator housing of the spindle motor 80 is slidably mounted on the upper frame 11 via a guide member. Below the upper frame 11 is an upper cylinder 60, the top surface of which has a motor cavity 62 capable of accommodating the spindle motor 80. A guide hole 115 is provided on the upper frame 11, and a guide post b63 is provided on the upper cylinder 60 that mates with the guide hole 115. The cooperation between the guide hole 115 and the guide post b63 helps to prevent axial rotation of the upper cylinder 60 during its vertical movement after accommodating the spindle motor 80.

[0061] As attached Figure 5 and 6 As shown, a connecting groove 61 is provided on the outer wall of the upper cylinder body 60. Below the upper cylinder body 60, a lower cylinder body 70 is provided to support the material distribution component 45. The lower cylinder body 70 has a material distribution cavity 71 that can accommodate the material distribution component 45, and a connecting arm 72 extending into the connecting groove 61. A mounting groove 121 for accommodating the lower cylinder body 70 is provided on the lower frame 12. By supporting the material distribution component 45 with the lower cylinder body 70, the excessive spacing between the components of the upper cylinder body 60 and the lower cylinder body 70 is prevented from causing the screws to tilt.

[0062] As attached Figure 1 As shown, a storage bin 40 is provided on the lower section of the main shaft 82; a material distribution component 45, which can rotate relative to the storage bin 40, is connected to the lower part of the storage bin 40. The material distribution component 45 is disposed inside the lower frame 12, and a feeding guide rail 50 extending to the bottom of the base frame is slidably provided on the lower frame 12. The feeding guide rail 50 is connected to the discharge port of the material distribution component 45. During the operation of the main shaft motor 80, it moves up and down relative to the upper frame 11 through the guide component; the screws in the storage bin 40 enter the feeding guide rail 50 one by one through the material distribution component 45. When the screw slides down to the end of the feeding guide rail 50, the up and down movement of the main shaft motor 80 drives the screw at the end of the feeding guide rail 50 into the locking sleeve of the electric screwdriver body 30.

[0063] As attached Figure 1 As shown, the storage bin 40 is equipped with a direction adjustment component capable of adjusting the direction of screws. By using the direction adjustment component, the orientation of the screws in the storage bin 40 can be adjusted, that is, the direction in which the nut part is on top and the stud part is on the bottom can be adjusted.

[0064] As attached Figures 7-14As shown, the direction adjustment assembly includes a rotating cover 41, a guide ring 42, a screening cone 43, and a screening block 44 arranged sequentially from top to bottom. The rotating cover 41 is sleeved on the lower main shaft 82 and is driven to rotate circumferentially by the lower main shaft 82. The rotating cover 41 has a feed port 411, and at least two guide posts a412 are provided on the inner wall of the rotating cover 41 below the feed port 411. The guide ring 42 is provided between the rotating cover 41 and the screening cone 43, and a wave guide rail 421 is provided on the circumference of the guide ring 42 to cooperate with the at least two guide posts a412. During the rotation of the rotating cover 41, the guide post a412 on the inner wall cooperates with the wave guide rail 421 on the guide ring 42 to realize the up and down movement of the guide ring 42, thereby enabling the screw to slide towards the screening cone 43 after passing through the guide ring 42. The principle is to use the up and down movement of the guide ring 42 to separate and contact the guide ring 42 and the screening cone 43, thereby realizing the accumulation and unblocking of the screw between the two.

[0065] As attached Figures 7-9 As shown, the inner ring of the rotating cover 41 is provided with a second toothed groove 413, and a second gear a414 is coaxially arranged in the second toothed groove 413. Multiple second gears b415 mesh between the second gear a414 and the second toothed groove 413. The lower main shaft 82 passes through the axis of the second gear a414 and drives the second gear a414 to rotate in the inner ring of the rotating cover 41. The rotation of the rotating cover 41 is achieved through the second gears b415, which helps to achieve the precision and stability of the rotation.

[0066] As attached Figure 9 As shown, the upper part of the inner wall of the guide ring 42 is provided with a conical hole section 422, and the lower part of the conical hole section 422 is provided with a cylindrical hole section 423; the screening cone 43 is slidably disposed in the cylindrical hole section 423. In the initial state, the guide ring 42 has the screening cone 43 in the cylindrical hole section 423, and the screws are accumulated in the conical hole section 422; when the guide ring 42 is in use, that is, when the guide ring 42 is separated from the screening cone 43, the screening cone 43 is in the lower part of the cylindrical hole section 423, and the screws in the conical hole section 422 can enter the cylindrical hole section 423, thereby sliding down along the screening groove 431.

[0067] As attached Figures 10-12As shown, the inner ring of the screening cone 43 is provided with a first tooth groove 433, a first gear a434 coaxially arranged in the first tooth groove 433, a planetary gear ring 436 arranged in the first tooth groove 433, a first gear b435 rotatably arranged on the planetary gear ring 436 and cooperating with the first tooth groove 433, a locking protrusion 437 is provided in the inner ring of the screening cone 43, and a steering protrusion 438 cooperating with the locking protrusion 437 is provided on the planetary gear ring 436. The screening cone 43, driven by planetary gears, helps improve the accuracy of rotation. When a screw in the storage bin 40 falls onto the top surface of the screening cone 43 during the unloading process, the screw may become embedded in the inner ring. The planetary gear ring 436 can prevent the screw from entering the inner ring, but the screw may get stuck between the planetary gear ring 436 and the first tooth groove 433, or between the planetary gear ring 436 and the first gear a434. As the screw gets stuck, the planetary gear ring 436 rotates. After the locking protrusion 437 contacts the turning protrusion 438, the screening cone 43 is forced to rotate in the opposite direction, causing the screw to be pushed out and slide down the inclined surface of the screening cone 43.

[0068] The screening cone 43 has screening grooves 431 evenly distributed on its conical surface. The screening grooves 431 guide the trajectory of the screw as it passes over the surface of the screening cone 43, which helps to guide the screw.

[0069] The bottom surface of the screening cone 43 is provided with a control groove 432 that cooperates with the control rod 441. One end of the control groove 432 passes through the screening alignment groove 431. After the control rod 441 passes through the control groove 432, it acts on the screw that has passed through the screening alignment groove 431, which helps to improve the accuracy of screw alignment.

[0070] As attached Figure 13 and 14 As shown, the screening cone 43 is sleeved on the lower main shaft 82 and rotates around the lower main shaft 82. Below the screening cone 43 is a screening block 44. The top surface of the screening block 44 has an annular screw groove 442. The screw groove 442 has a vertically penetrating adjustment transmission hole 443. Above the adjustment transmission hole 443 is a corresponding control rod 441, which is located on the screening block 44 inside the screw groove 442. The cone surface of the screening cone 43 guides the screws in the storage bin 40 downwards. During the relative rotation of the screening block 44 and the screening cone 43, the control rod 441 on the screening block 44 adjusts the direction of the screws, ensuring that screws with their heads facing upwards move through the adjustment transmission hole 443.

[0071] The control rod 441 has an overall L-shaped structure, and its horizontal section is spaced apart from the top surface of the screening block 44, covering the upper part of the adjustment transmission hole 443. The free end of the horizontal section of the control rod 441 can extend into the screening oriented groove 431. When the screw moves downward through the screening oriented groove 431, the screw will temporarily accumulate in the screening oriented groove 431 because the top surface of the screen contacts the bottom surface of the screening cone 43. As the screening cone 43 and the screening block 44 rotate relative to each other, the control rod 441 adjusts the screw in the screening oriented groove 431. When the screw nut is facing upward, the stud part of the screw enters the screw groove 442 first. At this time, the nut is below the control rod 441 due to its height and does not contact the control rod 441, but the nut part is still in the screening oriented groove 431. As the screening cone 43 rotates relative to the screening block 44 until the screw passes through the adjustment transmission hole 443, the screw slides down with the nut facing upwards. When the nut of the screw faces downwards, the nut part of the screw will temporarily contact the top surface of the screening block 44. At this time, no part of the screw will enter the screw groove 442. As the screening cone 43 and the screening block 44 rotate relative to each other, the control rod 441 can contact the stud part of the screw and form a flipping action. The flipped stud part of the screw will enter the screw groove 442, thereby completing the screw orientation operation.

[0072] As attached Figure 15 and 16 As shown, the lower part of the storage bin 40 is connected to a material distribution component 45 that can rotate relative to the storage bin 40. The material distribution component 45 is disposed within the lower frame 12. A material discharge guide rail 50 extending to the lower part of the base frame is slidably disposed on the lower frame 12. The material discharge guide rail 50 is connected to the discharge port of the material distribution component 45. The material distribution component 45 has a first material distribution hole 452 at its center. Multiple inclined second material distribution holes 455 are evenly distributed around the first material distribution hole 452. The upper port of the second material distribution hole 455 corresponds to the adjustment transmission hole 443, and the lower port of the second material distribution hole 455 is connected to the lower part of the first material distribution hole 452. The screws, whose direction has been adjusted in the adjustment transmission hole 443, are received by the multiple second material distribution holes 455 and fall into the first material distribution hole 452, and then enter the material discharge guide rail 50 in sequence. The material distribution component 45 is assembled from multiple material distribution blocks 451, the number of which is the same as the number of second material distribution holes 455. The second material distribution holes 455 are located on the material distribution blocks 451. One of the splicing surfaces of each material distribution block 451 has a dovetail-shaped boss 453, and the other splicing surface has an insert groove 454 that mates with the boss 453. The cooperation of the multiple material distribution blocks 451 facilitates the assembly of the material distribution component 45, while the cooperation of the boss 453 and the insert groove 454 locks adjacent material distribution blocks 451 in place.

[0073] As attachedFigures 16-18 As shown, the first dispensing hole 452 is provided with a rotating nozzle 46 that is linked to the lower central shaft. The lower circumferential surface of the rotating nozzle 46 is provided with a feeding groove 461 corresponding to the second dispensing hole 455. The rotating nozzle 46 can rotate relative to the dispensing component 45, so the feeding groove on the rotating nozzle 46 can allow the screws passing through the second dispensing hole 455 to enter the feeding guide rail 50 one by one.

[0074] As attached Figure 19 and 20 As shown, the feeding guide rail 50 includes a vertical section 51, the lower end of which is provided with an inclined section 52 that slopes downwards towards the base frame. A feeding port 53 is provided at the end of the inclined section 52 away from the vertical section 51. The vertical section 51 has a hollow internal structure, which helps the screw, after its orientation has been adjusted, slide vertically downwards. The inclined section 52 has a cross-section with a T-slot, and an anti-loosening cover 521 is provided above the T-slot to help ensure the screw slides in the correct direction. Multiple supporting springs 531 are evenly distributed on the inner wall of the feeding port 53. These supporting springs 531 are embedded in the inner wall of the feeding port 53, and the cooperation of the multiple supporting springs 531 helps to support the nut portion of the screw.

[0075] The screw feeding device of the present invention uses a base frame as a carrier, on which the electric screwdriver body 30 can be placed. The upper spindle 81 is engaged with the threaded hole of the upper frame 11. During the operation of the spindle motor 80, it moves up and down relative to the upper frame 11 through the guide member. The screws in the storage bin 40 enter the feeding guide rail 50 one by one through the feeding member 45. When the screw slides down to the end of the feeding guide rail 50, the up and down movement of the spindle motor 80 drives the screw at the end of the feeding guide rail 50 into the locking sleeve of the electric screwdriver body 30.

[0076] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0077] The terms "upper," "lower," "outer," "inner," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish relative positional relationships and are not necessarily qualitative. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0078] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A screw feeding device for feeding screws into the locking sleeve of an electric screwdriver body (30), comprising a base frame, characterized in that, The base frame has an upper frame (11) and a lower frame (12) on one side, which are opposite each other. The upper frame (11) has a threaded hole. A double-headed spindle motor (80) is provided below the upper frame (11). The upper end of the upper spindle (81) of the spindle motor (80) extends into the threaded hole, and the upper spindle (81) has a threaded section (83) that mates with the threaded hole. The stator housing of the spindle motor (80) is slidably mounted on the upper frame through a guide. On the frame (11), a storage bin (40) is provided on the lower section of the main shaft (82) of the main shaft motor (80); the lower part of the storage bin (40) is connected to a material distribution component (45) that can rotate relative to the storage bin (40), the material distribution component (45) is set in the lower frame (12), and a feeding guide rail (50) extending to the bottom of the base frame is slidably provided on the lower frame (12), the feeding guide rail (50) is connected to the discharge port of the material distribution component (45); the storage bin The compartment (40) is equipped with a direction adjustment component that can adjust the direction of the screws; the direction adjustment component includes a screening cone (43), which is sleeved on the lower main shaft (82) and rotates around the lower main shaft (82); a screening block (44) is provided below the screening cone (43), and an annular screw groove (442) is provided on the top surface of the screening block (44). An adjustment transmission hole (443) that penetrates vertically through the screening block (44) is provided in the screw groove (442), and a control rod (441) is provided above the adjustment transmission hole (443). The control rod (441) is set on the screening block (44) inside the screw groove (442); screening oriented grooves (431) are evenly distributed on the cone surface of the screening cone (43); a control groove (432) that cooperates with the control rod (441) is provided on the bottom surface of the screening cone (43), and one end of the control groove (432) penetrates the screening oriented groove (431).

2. The screw feeding device according to claim 1, characterized in that, The storage bin (40) includes a rotating cover (41) disposed above the screening cone (43). The rotating cover (41) is sleeved on the lower main shaft (82) and driven by the lower main shaft (82) to rotate circumferentially. The rotating cover (41) has a feeding port (411). At least two guide posts a (412) are provided on the inner wall of the rotating cover (41) below the feeding port (411). A guide ring (42) is provided between the rotating cover (41) and the screening cone (43). A wave guide rail (421) is provided on the circumferential surface of the guide ring (42) to cooperate with the at least two guide posts a (412).

3. The screw feeding device according to claim 2, characterized in that, The upper part of the inner wall of the guide ring (42) is provided with a conical hole section (422), and the lower part of the conical hole section (422) is provided with a cylindrical hole section (423); the screening cone (43) is relatively slidably disposed in the cylindrical hole section (423).

4. The screw feeding device according to claim 1, characterized in that, The material distribution component (45) has a first material distribution hole (452) at its center. Multiple inclined second material distribution holes (455) are evenly distributed around the first material distribution hole (452). The upper port of the second material distribution hole (455) corresponds to the adjustment transmission hole (443), and the lower port of the second material distribution hole (455) is connected to the lower part of the first material distribution hole (452).

5. A screw feeding device according to claim 4, characterized in that, The first dispensing hole (452) is equipped with a rotating nozzle (46) that is linked to the lower central shaft. The lower circumferential surface of the rotating nozzle (46) is provided with a feeding groove (461) corresponding to the second dispensing hole (455).

6. A screw feeding device according to claim 4, characterized in that, The material distribution component (45) is assembled from multiple material distribution blocks (451). The number of material distribution blocks (451) is the same as the number of second material distribution holes (455). The second material distribution holes (455) are set on the material distribution blocks (451). One of the splicing surfaces of the material distribution block (451) is provided with a dovetail-shaped boss (453), and the other splicing surface is provided with an embedding groove (454) that cooperates with the boss (453).

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