A high-precision screw special hand-held continuous automatic nail spinning wrench

Abstract

The application discloses a high-precision screw special hand-held continuous automatic nail feeding screwdriver and belongs to the technical field of hand or electric screwdrivers. The screwdriver is integrated with a power system, a driving system, an extension system, a control system and a nail feeding system arranged from top to bottom. The power system comprises an energy storage cabin, the driving system comprises an electric driving part driven by a micro motor and a manual driving part realized through a handle and a gear tooth, and a force transmission mechanism is arranged. The extension system drives a rotating rod to move up and down through an electric cylinder, so that the meshing tooth at the upper end of the rotating rod is selectively engaged with or separated from the meshing groove of a tooth disc. The nail feeding system is provided with replaceable nail cartridges and a nail disc, and the nail body is continuously pushed in the nail disc through a rotating spring and a push piece. The application has both electric and manual driving modes, can realize hand-held continuous automatic nail feeding and locking, is flexible to operate, and reliably feeds nails, and effectively solves the problems of low efficiency and easy nail jamming of high-precision screws in hand-held mobile operation.

Description

Technical Field

[0001] This invention belongs to the field of manual or electric screwdriver technology, and specifically relates to a high-precision screwdriver with a hand-held continuous automatic screw ejection mechanism. Background Technology

[0002] In assembly operations in industries such as electronic equipment, precision instruments, and medical devices, the fastening of high-precision screws is an indispensable critical process. Currently, for the demand for high-volume, highly repetitive precision screw fastening, industrial sites mainly rely on fixed electric screwdrivers or fixed pneumatic screwdrivers. These devices are usually integrated into automated production lines or dedicated workbenches, and are positioned for operation via robotic arms or suspension devices. However, fixed screwdrivers are limited by their installation location and operating radius, making it difficult to meet the needs of flexible workstations, field maintenance, small-batch, multi-variety production, and handheld mobile operation scenarios. Operators still need to rely heavily on traditional manual screwdrivers for supplementary or rework operations, resulting in low efficiency and unstable torque control.

[0003] On the other hand, while existing handheld electric screwdrivers offer a degree of portability, their screw feeding methods are mostly either manual screw removal or external vibratory feeders. The latter requires bulky screw feeding lines and pneumatic systems, which cannot be integrated into the handheld tool itself. Although a few products have attempted to incorporate screw storage structures within the body, the loose arrangement of the screws and the tortuous feeding path make them prone to jamming or incomplete screw feeding. This is especially problematic for high-precision screws with small diameters and diverse head shapes, where existing handheld screwdrivers are almost unable to achieve reliable and continuous automatic screw feeding. Summary of the Invention

[0004] To solve at least one of the above technical problems, the present invention provides a high-precision screw-specific hand-held continuous automatic screw ejector.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: The present invention provides a high-precision screw-specific hand-held continuous automatic screw-out screwdriver, comprising a power system, a drive system, a telescopic system, a control system, and a screw-out system arranged sequentially from top to bottom; The power system includes an energy storage compartment located at the top. The drive system includes an electric drive and a manual drive. The electric drive comes from a micro motor located at the bottom of the energy storage compartment. The manual drive includes a handle located in the middle section and a paddle tooth fixedly located on the inside of the handle. The drive system also includes a force transmission mechanism, which includes a gear cylinder disposed inside the handle and a gear disc disposed at the bottom of the gear cylinder. The gear cylinder is surrounded by helical teeth that mesh with the paddle teeth, and the center of the gear disc is provided with a vertically penetrating groove. The telescopic system includes an electric cylinder, a rotating rod, and a support. The support is fixedly mounted on the vertical axis of the micro motor. The electric cylinder extends vertically downwards and the central push rod of the cylinder body is provided with a plug-in embedded locking hole. The rotating rod is movably connected in the plug-in embedded locking hole, and the upper end of the rotating rod is provided with teeth around its diameter. The nail system includes a nail magazine movably connected to the toothed disc and a nail disc disposed inside the nail magazine. The nail disc is provided with a rotating spring and a paddle for continuously pushing the nail body. The micro motor transmits power to the rotary rod through the force transmission mechanism, and the handle drives the rotary gear through the paddle teeth to achieve manual operation.

[0006] Preferably, the micro motor includes a body, a cylindrical shaft, and a shaft disc, which are arranged vertically from top to bottom. One end of the cylindrical shaft is fixedly connected to the internal rotor of the body, and the other end is fixedly connected to the shaft disc. The outer diameter of the shaft disc is provided with micro-tooths. The shaft disc is pushed from top to bottom into the upper end of the toothed cylinder and fixedly connected. The micro-tooths on the outer diameter of the shaft disc match the micro-grooves on the inner diameter of the toothed cylinder.

[0007] Preferably, the grip consists of two parts, a clockwise grip and a counterclockwise grip, which are hinged together by a fixed housing in the middle. The teeth are vertically evenly arranged beveled teeth and are integrally formed with the grip. The gear cylinder is a hollow cylindrical gear, and the helical teeth are vertically evenly arranged around the gear cylinder.

[0008] Preferably, the toothed cylinder is rotated in the forward direction by pressing the root of the clockwise grip, and rotated in the reverse direction by pressing the root of the counterclockwise grip, with continuous manual pressing generating continuous paddle force.

[0009] Preferably, the toothed disc consists of two flat discs, an outer disc and an inner disc, rotatably connected. The outer disc is a fixed disc, and the inner disc is a rotating disc. Rotating balls are provided at the connection between the two discs. The groove is located at the center of the inner disc. A ring of positioning teeth is provided on the outer diameter of the inner disc. The positioning teeth and the groove are fixedly connected to the inner disc and rotate together with the inner disc. The toothed cylinder is fixedly fitted onto the inner disc by anchoring the positioning teeth.

[0010] Preferably, the support is a non-magnetic and non-conductive hollow tube flange seat. The top of the support is fixedly connected to the bottom shell of the energy storage compartment, and the bottom is fixedly connected to the top shell of the electric cylinder. The teeth at the upper end of the rotating rod move up and down with the electric cylinder. When the teeth move vertically to the groove position and engage with it, the rotating rod rotates. When the teeth retract and disengage from the groove position, the rotating rod stops rotating.

[0011] Preferably, the control system includes a main control button and a telescopic button. The main control button is located at the top center of the energy storage compartment and is a cycle control button. The main control button also serves as a power switch control button and a speed control button, and adjusts the speed and torque by controlling the current output of the energy storage compartment. The telescopic button is located in the middle of the fan base of the handle and is fixedly connected to the fixed housing. Pressing the telescopic button controls the electric cylinder to extend and retract up and down.

[0012] Preferably, the nail chamber is a bucket-shaped shell, the nail disc is a cylindrical column with the inner ring of the column equipped with the spring, the outer ring of the column equipped with a slide for arranging the nails, and the center of the column equipped with a screw to be inserted. The paddle is located at the beginning of the slide, and under the rebound action of the spring, the paddle moves the nails in the slide one by one towards the center of the end column to achieve continuous insertion of nails.

[0013] Preferably, the nail tray is a single-unit integrated nail-throwing structure or a multi-unit integrated spiral nail-throwing structure.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention integrates an energy storage chamber, a micro-motor, a manual handle, and a replaceable nail magazine into a single unit, truly achieving continuous automatic nail dispensing with a handheld attachment. This not only completely eliminates the dependence of fixed screwdrivers on workbenches and robotic arms but also effectively overcomes the inherent limitations of traditional handheld tools, which can only dispense nails once or require a bulky external nail supply system. This allows operators to work efficiently in flexible workstations, field maintenance, and small-batch, multi-variety production scenarios. The drive system offers both electric and manual modes. The manual drive, utilizing the clockwise and counter-clockwise rotation design on both sides of the handle, allows for rapid power replenishment when power is insufficient and also enables reverse screw dispensing, significantly enhancing reliability and operational flexibility in handling unexpected situations. The telescopic system allows the screwdriver rod to extend and retract as needed. Combined with the plug-in bit changing structure, this ensures stable power transmission during operation and facilitates storage and adaptation to different screw head types. The screw tray employs a continuous screw-feeding mechanism using a combination of a spring and a lever, along with a bucket-shaped screw magazine design, ensuring the orderly and smooth feeding of tiny, high-precision screws into the handheld tool, significantly reducing the risk of screw jamming and incomplete screw feeding. The cyclic speed adjustment function of the main control knob and the ergonomic layout of the telescopic knob allow the operator to control power on / off, speed adjustment, and extension / retraction with one hand, simplifying the operation process. Furthermore, the rational configuration of the charging port and heat dissipation structure on the top of the energy storage compartment further extends the tool's continuous operating time and improves grip comfort. Overall, this invention represents a substantial improvement in portability, continuous screw feeding, redundant driving force, ease of operation, and adaptability to different screw sizes, effectively resolving the long-standing contradiction between efficiency and stability in handheld screw fastening operations. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall appearance of the present invention.

[0017] Figure 2 This is a schematic diagram of the micro motor structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the telescopic system structure of the present invention.

[0019] Figure 4 This is a comparison diagram of the internal structure of the present invention in the expansion and contraction state.

[0020] Figure 5 This is a schematic diagram of the nail disk structure of the present invention.

[0021] Figure 6 This is a schematic diagram of the grip structure of the present invention.

[0022] Figure 7 This is an exploded view of the central rotating structure of the present invention.

[0023] Figure 8 This is a schematic diagram of the central rotating structure assembly of the present invention.

[0024] Figure 9 This is a comparison diagram of the overall appearance of the present invention in its extended / twisted state.

[0025] Explanation of reference numerals in the attached figures: Energy storage compartment 11, micro motor 21, handle 22, pry bar 23, gear cylinder 24, gear disc 25, electric cylinder 31, rotary rod 32, support 33, main control button 41, charging port 42, telescopic button 43, nail magazine 51, nail disc 52, nail body 53, machine body 211, cylinder shaft 212, shaft disc 213, clockwise grip 221, counterclockwise grip 222, rotary tooth 241, groove 251, tooth 321, bit 322, spring 521, pry bar 522. Detailed Implementation

[0026] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. However, the drawings are merely illustrative and do not represent a complete and exhaustive representation of the invention. In the following description, when referring to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The terms "upper," "lower," "left," "right," "inner," "outer," "front," and "rear" appearing in the description are only used to illustrate the understanding of the invention with reference to the corresponding drawings. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application; rather, they are merely examples of apparatuses or methods consistent with some aspects of this application as detailed in the appended claims.

[0027] This invention relates to a high-precision screw-feeding tool, specifically a hand-held, continuous, automatic screw-feeding device. Figure 1 The overall outline of the invention can be simply summarized into three sections: upper, middle, and lower. The upper section mainly includes an energy storage chamber 11 and a micro motor 21. The energy storage chamber 11 is located at the top of the invention and its purpose is to facilitate charging and heat dissipation. The micro motor 21 is located at the bottom of the energy storage chamber 11, which effectively reduces the temperature and heat generated by the motor rotation. The middle section mainly includes a manually rotatable or manually force-applied handle 22, which consists of two parts: a clockwise rotating handle 221 and a counterclockwise rotating handle 222. The lower section includes a nail-changing system that allows for the movable replacement of the nail cartridge 51.

[0028] In one specific embodiment, the high-precision screw-feeding handheld continuous automatic screw-feeding tool of the present invention mainly includes a power system, a drive system, a telescopic system, a control system, and a screw-feeding system according to system function. The power system includes an energy storage chamber 11. As mentioned above, the energy storage chamber 11 is located at the top of the present invention and is cylindrical in shape. A rechargeable battery is installed inside the cylinder, which is the main power source of the present invention.

[0029] Furthermore, the drive system is located at the bottom of the power system. The drive system includes two drive methods: electric drive and manual drive. The electric drive originates from the micro-motor 21, which has a hollow central structure. The micro-motor 21 comprises three parts: a body 211, a cylindrical shaft 212, and a shaft disc 213. The cylindrical shaft 212 and the shaft disc 213 are arranged vertically from top to bottom along the central hollow axis. The top shell and power supply line of the fuselage 211 are fixedly connected to the bottom shell and power supply of the energy storage compartment 11. The vertical shell of the fuselage 211 is provided with heat dissipation stripes or heat dissipation gaps. The fuselage 211 has a tire-like structure, and its bead opening is provided with a vertically downward rotating component, namely the cylindrical shaft 212. The cylindrical shaft 212 is a cylindrical hollow rotating shaft. One end of it is fixedly connected to the internal rotor of the fuselage 211 through the bead opening, and the other end is fixedly connected to the shaft disc 213. The shaft disc 213 is a dial with a certain thickness and has micro-tooth on its outer diameter. The cylindrical shaft 212 drives the shaft disc 213 to rotate synchronously. The main components of the manual drive include a handle 22 and a tooth 23. Please refer to the attached diagram. Figure 6-8As shown, the handle 22 is shaped like two wings, symmetrically arranged on the outside of the segment in this invention. The left side is a clockwise rotating handle 221, and the right side is a counter-clockwise rotating handle 222. A fixed housing is located between the two wing tips. The clockwise rotating handle 221 and the counter-clockwise rotating handle 222 are hinged together through the fixed housing, allowing the handle 22 to rotate at a small angle when subjected to operational force. The paddle teeth 23 are vertically evenly arranged oblique teeth, fixedly located on the inner side of the handle 22, with their teeth pointing towards the wing tips. The paddle teeth 23 and the handle 22 are at the same height and integrally formed. The drive... The system also includes a force transmission mechanism, which mainly consists of a gear cylinder 24 and a gear disc 25. The gear cylinder 24 is located inside the handle 22, and its height is equal to or slightly lower than the handle 22. The gear cylinder 24 is a hollow cylindrical gear. Micro-grooves are provided in the inner diameter of the gear cylinder 24. Vertically evenly arranged helical teeth 241 are arranged around the gear cylinder 24. The height of the helical teeth 241 is the same as that of the gear cylinder 24. The helical teeth 241 mesh with the pry teeth 23. By pressing the root of the clockwise rotating handle 221 with a concentrated grip force, the gear cylinder 24 can be rotated clockwise. The toothed cylinder 24 can be rotated in the opposite direction by pressing the base of the counter-rotating handle 222 with concentrated grip force; continuous manual pressing can generate continuous turning force, and can be used alone as a manual screwdriver or to supplement the kinetic energy when the electric drive kinetic energy is insufficient; the toothed disc 25 is located at the bottom of the toothed cylinder 24, and the toothed disc 25 is composed of two inner and outer flat discs rotatably connected, the outer disc is a fixed disc, and the inner disc is a rotating disc, and rotating balls are provided at the connection between the two discs. The diameter of the inner disc is smaller than the diameter of the outer disc and equal to or slightly smaller than the inner diameter of the toothed cylinder 24. The bottom of the inner disc is flush with the bottom of the outer disc, and the middle of the inner disc... The inner disc has a through groove 251, and a ring of positioning teeth is provided on the outer diameter of the inner disc. The positioning teeth and the groove 251 are fixedly connected to the inner disc and rotate together with the inner disc. The toothed cylinder 24 is fixedly fitted onto the inner disc by anchoring the positioning teeth. The toothed disc 25 is in contact with the handle 22 and is fixedly connected to the fixed housing. The shaft disc 213 is pushed into the upper end of the toothed cylinder 24 from top to bottom and fixedly connected. The outer diameter micro-tooth of the shaft disc 213 matches the inner diameter micro-groove of the toothed cylinder 24.

[0030] Furthermore, through Figure 2 - Figure 4As shown, the telescopic system includes an electric cylinder 31, a rotating rod 32, and a support 33. The support 33 is a non-magnetic, non-conductive hollow tube flange seat, located on the vertical axis of the micro motor 21. The top of the support 33 is fixedly connected to the bottom shell of the energy storage compartment 11, and the bottom of the support 33 is fixedly connected to the top shell of the electric cylinder 31. The electric cylinder 31 is a miniature electric telescopic cylinder, and its power supply line is led through the hollow tube flange seat of the support 33 to the rechargeable battery inside the energy storage compartment 11 to provide kinetic energy. The electric cylinder 31 extends and retracts vertically downwards, and its central push rod and peripheral push rods extend and retract vertically and can rotate with external force. The central push rod of the cylinder is provided with a plug-in internal... The insertable locking hole houses a replaceable, movable rotating rod 32. The rotating rod 32 is a replaceable solid metal rod, the length of which can be selected and changed according to the application scenario. A ring of fixed teeth 321 is arranged around the upper end of the rotating rod 32. These teeth 321 move up and down with the electric cylinder 31. When the teeth 321 move vertically to the lower groove 251 and engage with it, the rotating rod 32 rotates. Conversely, when the teeth 321 retract and disengage from the groove 251, the rotating rod 32 stops rotating. The rotation of the rotating rod 32 is achieved through the driving method and the power path of the force transmission mechanism, the gear cylinder 24, and the gear disc 25. The lower end of the rotating rod 32 is equipped with a magnetically replaceable screwdriver bit 322 for convenient use with screws of different uses and shapes.

[0031] Furthermore, the control system includes a main control button 41, a charging port 42, and a telescopic button 43. The main control button 41 is located at the top center of the energy storage compartment 11, and is a circular, recessed button suitable for single-finger pressing. Its installation height is slightly lower than the upper surface of the energy storage compartment 11. The main control button 41 is a cycle control button, serving as both a power switch control button and a speed control button. Its speed control principle is to control the current output of the energy storage compartment 11 to control the speed and torque. Pressing this button sequentially performs the functions of on – low speed – medium speed – high speed – off. The charging port 42 is located on the top of the energy storage compartment 11, around the outer periphery of the main control button 41, and uses a universal charging port, which can be referred to as... Figure 1 As shown; according to Figure 1 and Figure 8As shown, the telescopic button 43 is a long disc-shaped button, vertically positioned between the fan bases of the clockwise rotating handle 221 and the counterclockwise rotating handle 222. Its height is the same as that of the clockwise rotating handle 221 and the counterclockwise rotating handle 222. The telescopic button 43 is the control button for the electric cylinder 31. Pressing the telescopic button 43 controls the electric cylinder 31 to extend and retract vertically. The telescopic button 43 is fixedly connected to the fixed housing of the present invention. The telescopic button 43 is ergonomically designed and comfortable to press. The control function can be achieved by easily pressing the disc-shaped button at any position.

[0032] Furthermore, the screw-driving system enables continuous, one-by-one screw insertion of high-precision screws and can be replaced as a whole according to specifications and models; the screw-driving system is located at the bottom of the invention and includes a screw magazine 51, a screw tray 52, and a screw body 53, combined with... Figure 1 and Figure 5 As shown, the nail chamber 51 is a bucket-shaped shell movably connected to the toothed disc 25. Inside the nail chamber 51 is a nail disc 52 for single-unit, one-by-one nail insertion or multi-unit, one-by-one spiral nail insertion. Taking the single-unit as an example, the nail disc 52 is cylindrical in shape. The inner ring of the cylinder is a coil spring 521, and the outer ring is a slide for arranging the nail bodies 53. The center of the cylinder is the screw to be inserted, i.e., the nail body 53. A lever 522 is provided at the beginning of the slide. Under the rebound action of the coil spring 521, the lever 522 moves the nail bodies 53 in the slide one by one towards the center of the cylinder at the end to achieve continuous nail insertion. When the multi-unit finished nail disc 52 is used, it can be continuously inserted one by one by spiraling from the bottom according to the layers until all nails are inserted.

[0033] The working process of the present invention will be described below with reference to the accompanying drawings.

[0034] During the preparation phase, the operator first charges the internal rechargeable battery through the charging port 42 on the top of the energy storage compartment 11. Then, according to the specifications of the screws to be fastened, the matching nail tray 52 is selected and installed into the nail magazine 51, and according to the screw head type, the matching bit 322 is selected and installed at the lower end of the screwdriver 32.

[0035] During the start-up and speed adjustment phase, the operator presses the main control button 41 at the center of the top of the energy storage compartment 11. Since the main control button 41 is a cycle control button, each press switches between five states in sequence: on, low speed, medium speed, high speed, and off. The operator presses the button to the target speed gear according to the actual operation requirements.

[0036] During the telescopic extension phase, the operator presses the telescopic button 43 located between the clockwise grip 221 and the counterclockwise grip 222. Figure 4As shown, under the action of a control signal, the electric cylinder 31 drives the rotating rod 32 to extend downward until the teeth 321 at the upper end of the rotating rod 32 enter the grooves 251 of the gear disk 25 and engage with them. At this time, the rotating rod 32 forms a transmission connection with the inner disk of the gear disk 25, and the rotational power is transmitted to the rotating rod 32 through the gear disk 25.

[0037] During the continuous locking operation phase, such as Figure 2 and Figure 4 As shown, after the micro motor 21 is energized, the machine body 211 drives the cylindrical shaft 212 and the shaft disc 213 to rotate. Since the outer diameter micro-tooth of the shaft disc 213 matches the inner diameter micro-groove of the gear cylinder 24, power is transmitted sequentially through the shaft disc 213, the gear cylinder 24, and the gear disc 25 to the rotary rod 32, causing the screwdriver bit 322 to rotate synchronously. Simultaneously, as... Figure 5 As shown, under the rebound action of the spring 521, the nail disc 52 pushes the nail body 53 to the nail feeding position one by one through the paddle 522, realizing continuous automatic nail feeding. The operator only needs to hold the handle 22 and align the bit 322 with the screw to be fastened and press down to continuously complete the fastening operation of multiple screws.

[0038] When the electric drive force is insufficient or manual operation is required, the operator can press down on the base of the clockwise grip 221 to rotate the screw teeth 241 using the shift teeth 23, thereby achieving manual forward drive; pressing down on the base of the counterclockwise grip 222 will achieve reverse rotation to remove the screw. Continuous manual pressing generates continuous shifting force, which can be used as a standalone manual screwdriver or as a supplementary power source when the electric drive power is insufficient.

[0039] During the storage phase, after the operation is completed, the operator presses the main control button 41 to turn off the power, and then presses the telescopic button 43 to cause the electric cylinder 31 to drive the rotating rod 32 to retract to its original position, causing the meshing teeth 321 to disengage from the meshing groove 251, and the rotating rod 32 to stop rotating and retract to its original position. Figure 9 The storage state is shown. Finally, remove and store the bit 322 and the staple cartridge 51 separately.

[0040] This invention achieves a continuous, efficient, and reliable screw feeding and fastening effect for high-precision screws through the coordinated operation of the continuous rotation of the rotary rod 32 and the automatic screw feeding of the screw tray 52.

[0041] The specific embodiments of the present invention have been described in detail above, but they are merely examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to this invention are also included within the scope of the present invention. Therefore, equivalent transformations and modifications made without departing from the spirit and scope of the present invention should be covered within the scope of the present invention.

Claims

1. A high-precision screw-feeding tool, characterized in that, It includes, from top to bottom, a power system, a drive system, a telescopic system, a control system, and a screw-on system; The power system includes an energy storage compartment (11) located at the top. The drive system includes electric drive and manual drive. The electric drive comes from a micro motor (21) located at the bottom of the energy storage compartment (11). The manual drive includes a handle (22) located in the middle section and a paddle (23) fixedly located inside the handle (22). The drive system also includes a force transmission mechanism, which includes a gear cylinder (24) disposed inside the handle (22) and a gear disc (25) disposed at the bottom of the gear cylinder (24). The gear cylinder (24) is surrounded by helical teeth (241) that mesh with the paddle teeth (23), and the center of the gear disc (25) is provided with a vertically penetrating groove (251). The telescopic system includes an electric cylinder (31), a rotating rod (32), and a support (33). The support (33) is fixedly mounted on the vertical axis of the micro motor (21). The electric cylinder (31) extends vertically downwards and the cylinder center push rod is provided with a plug-in embedded hole. The rotating rod (32) is movably connected in the plug-in embedded hole. The upper end of the rotating rod (32) is provided with teeth (321) around its diameter. The nail system includes a nail cartridge (51) movably connected to the toothed disc (25) and a nail disc (52) disposed inside the nail cartridge (51). The nail disc (52) is provided with a spring (521) and a paddle (522) for continuously pushing the nail body (53). The micro motor (21) transmits power to the rotary rod (32) through the force transmission mechanism, and the handle (22) drives the rotary gear (241) through the paddle (23) to achieve manual drive.

2. The high-precision screw-feeding hand-held continuous automatic screw ejector according to claim 1, characterized in that, The micro motor (21) includes a body (211), a cylindrical shaft (212), and a shaft disc (213). The body (211), the cylindrical shaft (212), and the shaft disc (213) are arranged vertically from top to bottom. One end of the cylindrical shaft (212) is fixedly connected to the internal rotor of the body (211), and the other end is fixedly connected to the shaft disc (213). The outer diameter of the shaft disc (213) is provided with micro teeth. The shaft disc (213) is pushed from top to bottom into the upper end cylinder of the toothed cylinder (24) and fixedly connected. The outer diameter micro teeth of the shaft disc (213) match the inner diameter micro channels of the toothed cylinder (24).

3. The high-precision screw-feeding hand-held continuous automatic screw ejector according to claim 1, characterized in that, The handle (22) is composed of two pieces, a clockwise handle (221) and a counterclockwise handle (222), which are hinged together by a fixed housing in the middle. The teeth (23) are vertically evenly distributed oblique teeth and are integrally formed with the handle (22). The gear cylinder (24) is a hollow cylindrical gear, and the helical teeth (241) are vertically evenly distributed around the gear cylinder (24).

4. The high-precision screw-feeding hand-held continuous automatic screw ejector according to claim 3, characterized in that, The toothed cylinder (24) rotates in the forward direction by pressing the root of the clockwise grip (221) with a strong grip force, and the toothed cylinder (24) rotates in the reverse direction by pressing the root of the counterclockwise grip (222) with a strong grip force. Continuous manual pressing generates continuous paddle force.

5. A high-precision screw-feeding hand-held continuous automatic screw ejector as described in claim 1, characterized in that, The toothed disc (25) consists of two flat discs connected by rotation, with the outer disc being a fixed disc and the inner disc being a rotating disc. Rotating balls are provided at the connection between the two discs. The groove (251) is located at the center of the inner disc. A ring of positioning teeth is provided on the outer diameter of the inner disc. The positioning teeth and the groove (251) are fixedly connected to the inner disc and rotate together with the inner disc. The toothed cylinder (24) is fixedly fitted onto the inner disc by anchoring the positioning teeth.

6. The high-precision screw-feeding hand-held continuous automatic screw ejector according to claim 1, characterized in that, The support (33) is a non-magnetic and non-conductive hollow tube flange seat. The top of the support (33) is fixedly connected to the bottom shell of the energy storage compartment (11), and the bottom is fixedly connected to the top shell of the electric cylinder (31). The tooth (321) at the upper end of the rotating rod (32) moves up and down with the electric cylinder (31). When the tooth (321) moves vertically to the position of the groove (251) and engages with it, the rotating rod (32) rotates. When the tooth (321) retracts and disengages from the position of the groove (251), the rotating rod (32) stops rotating.

7. A high-precision screw-feeding hand-held continuous automatic screw ejector as described in claim 1, characterized in that, The control system includes a main control button (41) and a telescopic button (43). The main control button (41) is located at the top center of the energy storage compartment (11) and is a cycle control button. The main control button (41) also serves as a power switch control button and a speed control button. It adjusts the speed and torque by controlling the current output of the energy storage compartment (11). The telescopic button (43) is located in the middle of the fan base of the handle (22) and is fixedly connected to the fixed housing. Pressing the telescopic button (43) controls the electric cylinder (31) to extend and retract up and down.

8. A high-precision screw-feeding hand-held continuous automatic screw ejector according to claim 1, characterized in that, The nail chamber (51) is a bucket-shaped shell, the nail disc (52) is a cylindrical column with the inner ring of the cylinder equipped with the spring (521), the outer ring of the cylinder being a slide for arranging the nails (53), and the center of the cylinder being a screw to be inserted. The paddle (522) is located at the beginning of the slide. Under the rebound action of the spring (521), the paddle (522) moves the nails (53) in the slide one by one towards the center of the end cylinder to achieve continuous insertion of nails.

9. A high-precision screw-feeding hand-held continuous automatic screw ejector according to claim 8, characterized in that, The nail tray (52) is a single-unit integrated nail-throwing structure or a multi-unit integrated spiral nail-throwing structure.

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