CN112621665A

CN112621665A - Hand-held type sliding thread screw takes out equipment

Info

Publication number: CN112621665A
Application number: CN202110009878.1A
Authority: CN
Inventors: 叶希喆
Original assignee: Shijiazhuang Yinzhuang Trading Co ltd
Current assignee: Shijiazhuang Yinzhuang Trading Co ltd
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2021-04-09

Abstract

The invention relates to the related field of hardware, in particular to a handheld type sliding-tooth screw taking-out device which comprises a machine body and a handle arranged on the right end wall of the machine body, a first piston cavity is arranged in the handle, a first piston rod extending to the lower side of the handle is arranged in the first piston cavity in a vertically sliding manner, the first piston rod is connected with the top wall of the first piston cavity through a spring, and the machine body is internally provided with a first transmission cavity, the hand-held type thread-sliding screw taking-out equipment provided by the invention can realize cutting operation on the top end of a thread-sliding screw, so that a transverse groove is formed at the top end of the screw, the screw with the smooth teeth is smoothly taken out through the screwing-up device, this equipment has higher suitability in daily life, and this equipment adopts less power to cut simultaneously, avoids cutting article to cause the damage of article.

Description

Hand-held type sliding thread screw takes out equipment

Technical Field

The invention relates to the related field of hardware, in particular to a handheld type sliding-tooth screw taking-out device.

Background

The screw is taken as a tool commonly used in our life and plays an important role in many places, but when the screw is frequently taken out and screwed in or screwed in with great force, the groove at the top end of the screw is easy to damage, so that the screw is difficult to take out again, and therefore, a handheld type sliding-thread screw taking-out device is needed to be designed to solve the existing problems.

Disclosure of Invention

The invention aims to provide a handheld sliding-tooth screw taking-out device which can overcome the defects in the prior art, so that the practicability of the device is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a hand-held type sliding thread screw taking-out device, which comprises a machine body and a handle arranged on the right end wall of the machine body, wherein a first piston cavity is arranged in the handle, a first piston rod extending to the lower side of the handle is arranged in the first piston cavity in an up-and-down sliding manner, the first piston rod is connected with the top wall of the first piston cavity through a spring, a first transmission cavity is arranged in the machine body, the top wall of the first transmission cavity is rotatably provided with a first rotating shaft extending to the lower side of the machine body, the outer surface of the first rotating shaft is fixedly provided with a first gear positioned in the first transmission cavity, the bottom end of the first rotating shaft is fixedly provided with a rotating table positioned on the lower side of the machine body, the left end wall of the rotating table is fixedly provided with a first working block, the right end wall of the rotating table is fixedly provided with a second working block, and the, the inside spring fixture block that can slide from top to bottom that is provided with through spring coupling of fixed block, the spring fixture block can with set up in the recess cooperation of organism diapire in order to restrict the position of first work piece with the second work piece, the inside cutting device that is provided with of first work piece, cutting device is including setting up at the inside downwardly opening's of first work piece cutting chamber, cutting chamber roof rotates and is provided with the second pivot that extends to the first work piece upside, cutting chamber left and right sides end wall symmetry is provided with can gliding spring beam from top to bottom, the spring beam passes through the spring and is connected with cutting intracavity wall, and the fixed elevator that is located in the cutting intracavity that is provided with between two spring beams about, the inside second transmission chamber that is provided with of elevator, second transmission chamber upper end wall rotates and is provided with extend to in the cutting intracavity with the first integral key shaft of second pivot spline fit, the outer surface of the first spline shaft is fixedly provided with a fan wheel positioned at the upper side of the lifting block, the bottom end of the first spline shaft is fixedly provided with a first bevel gear positioned in the second transmission cavity, the front end wall and the rear end wall of the second transmission cavity are rotatably provided with a third rotating shaft positioned on the lower side of the first bevel gear, the outer surface of the third rotating shaft is symmetrically and fixedly provided with a first belt wheel in the front-back direction, the outer surface of the third rotating shaft is fixedly provided with a second bevel gear positioned at the rear side of the first belt wheel, the second bevel gear is meshed with the first bevel gear, two brackets are symmetrically and fixedly arranged on the bottom wall of the lifting block in front and back, a fourth rotating shaft is rotatably arranged between the brackets, a cutting knife positioned between the brackets is fixedly arranged on the outer surface of the fourth rotating shaft, the front end and the rear end of the fourth rotating shaft are fixedly provided with the same second belt wheel, and the second belt wheel is connected with the first belt wheel in a matched manner through a belt; the internal portion of second work piece is provided with screws up the device, it is right to screw up the device takes out the operation after the cutting device is handled, the internal portion of organism is provided with and is located the transmission of first transmission intracavity, transmission does cutting device with screw up the device transmission power.

Furthermore, the screwing device comprises a centrifugal cavity arranged in the second working block, an inclined block is fixedly arranged on the side wall of the centrifugal cavity, a fifth rotating shaft extending to the upper side of the second working block is rotatably arranged on the top wall of the centrifugal cavity, the same electromagnet is fixedly arranged at the top ends of the fifth rotating shaft and the second rotating shaft, a lifting cavity with a downward opening is arranged in the second working block and is positioned at the lower side of the centrifugal cavity, symmetrical first spring cavities are arranged on the left and right end walls of the lifting cavity, a first spring block connected through a spring is arranged in the first spring cavity in a vertically sliding manner, a sleeve positioned in the lifting cavity is fixedly arranged between the left and right first spring cavities, a rotary drum positioned in the lifting cavity is rotatably arranged in the sleeve, and a second spline shaft which extends to the centrifugal cavity and is in spline fit with the fifth rotating shaft is fixedly arranged at the top end of the rotary drum, the top end of the second spline shaft is bilaterally and symmetrically fixedly provided with cantilevers located in the centrifugal cavity, a second spring block connected through a spring is arranged in the cantilever in a sliding mode, rolling balls are arranged on the end face, located outside the cantilever, of the second spring block in a rolling mode, the rolling balls are always in contact with the inclined block, when the second spline shaft drives the cantilever to rotate, the second spring block is thrown out under the action of the centrifugal force, and the cantilever drives the second spline shaft to move downwards under the action of the inclined block, so that the rotary drum is driven to move downwards.

Furthermore, the screwing device further comprises the rotary drum and a second spring cavity arranged inside the rotary drum, an opening is formed in the bottom wall of the second spring cavity, four clamping blocks of a circumferential array are fixedly arranged on the circumferential side wall of the opening, a sliding rod which is located in the second spring cavity and extends to the lower side of the rotary drum is jointly arranged between the four clamping blocks in a vertical sliding mode, the sliding rod is further connected with the inner wall of the second spring cavity through a spring, and a straight knife which is located on the lower side of the rotary drum is fixedly arranged at the bottom end of the sliding rod.

Further, the transmission device comprises a motor which is fixedly arranged in the machine body and positioned at the upper side of the first transmission cavity, the output shaft of the motor extends downwards into the first transmission cavity, the bottom end of the output shaft is fixedly provided with a second gear positioned in the first transmission cavity, the bottom wall of the first transmission cavity is rotatably provided with a sixth rotating shaft which is positioned at the lower side of the output shaft and extends to the bottom wall of the machine body, a third gear positioned on the lower side of the second gear is fixedly arranged at the top end of the sixth rotating shaft, a seventh rotating shaft connected through a spring is arranged at the bottom end of the sixth rotating shaft in a spline fit manner, the bottom end of the seventh rotating shaft is fixedly provided with a spline housing positioned at the lower side of the machine body, a magnet which can be attracted with the electromagnet is arranged in the spline housing, when the magnet is attracted with the electromagnet, the spline sleeve is sleeved on the second rotating shaft and is in spline fit with the second rotating shaft.

Further, first transmission chamber diapire rotates and is provided with and is located the output shaft with eighth pivot between the first pivot, the outer surface spline fit of eighth pivot is provided with the third integral key shaft, third integral key shaft surface fixation is provided with the fourth gear, the fourth gear can simultaneously with the second gear with third gear engagement or simultaneously with the second gear with first gear engagement, the inside second piston chamber that is located of being provided with of organism first transmission chamber downside, the second piston chamber pass through the trachea with first piston chamber intercommunication, the second piston intracavity slides from top to bottom and is provided with and extends to first transmission intracavity with the second piston rod of third integral key shaft contact, the second piston rod can drive the third integral key shaft reciprocates.

The invention has the beneficial effects that: the handheld sliding-tooth screw taking-out device provided by the invention can realize cutting operation on the top end of a sliding-tooth screw, so that a transverse groove is formed at the top end of the screw, and the sliding-tooth screw is taken out smoothly through the screwing-up device.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the overall structure of a hand-held sliding-thread screw extracting apparatus of the present invention.

Fig. 2 is a schematic view of the structure a-a in fig. 1.

FIG. 3 is a schematic diagram of B-B in FIG. 1.

Fig. 4 is a partially enlarged structural diagram of C in fig. 1.

Fig. 5 is a partially enlarged schematic view of D in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

With reference to fig. 1-5, the hand-held type device for taking out the sliding thread screw comprises a machine body 10 and a handle 12 arranged on the right end wall of the machine body 10, wherein a first piston cavity 14 is arranged inside the handle 12, a first piston rod 16 extending to the lower side of the handle 12 is arranged inside the first piston cavity 14 in a vertically sliding manner, the first piston rod 16 is connected with the top wall of the first piston cavity 14 through a spring, a first transmission cavity 17 is arranged inside the machine body 10, a first rotating shaft 25 extending to the lower side of the machine body 10 is rotatably arranged on the top wall of the first transmission cavity 17, a first gear 24 positioned in the first transmission cavity 17 is fixedly arranged on the outer surface of the first rotating shaft 25, a rotating table 56 positioned on the lower side of the machine body 10 is fixedly arranged at the bottom end of the first rotating shaft 25, and a first working block 29 is fixedly arranged on the left end wall, the right end wall of the rotary table 56 is fixedly provided with a second working block 32, the top walls of the first working block 29 and the second working block 32 are fixedly provided with the same fixed block 61, the fixed block 61 is internally provided with a spring fixture block 62 capable of sliding up and down through spring connection, the spring fixture block 62 can be matched with a groove 63 arranged on the bottom wall of the machine body 10 to limit the positions of the first working block 29 and the second working block 32, a cutting device 81 is arranged inside the first working block 29, the cutting device 81 comprises a cutting cavity 30 arranged inside the first working block 29 and opening downwards, the top wall of the cutting cavity 30 is rotatably provided with a second rotating shaft 31 extending to the upper side of the first working block 29, the left end wall and the right end wall of the cutting cavity 30 are symmetrically provided with spring rods 48 capable of sliding up and down, and the spring rods 48 are connected with the inner wall of the cutting cavity 30 through springs, a lifting block 49 positioned in the cutting cavity 30 is fixedly arranged between the left spring rod 48 and the right spring rod 48, a second transmission cavity 51 is arranged inside the lifting block 49, a first spline shaft 47 extending into the cutting cavity 30 and in spline fit with the second rotating shaft 31 is rotatably arranged on the upper end wall of the second transmission cavity 51, a fan wheel 46 positioned on the upper side of the lifting block 49 is fixedly arranged on the outer surface of the first spline shaft 47, a first bevel gear 50 positioned in the second transmission cavity 51 is fixedly arranged at the bottom end of the first spline shaft 47, a third rotating shaft 54 positioned on the lower side of the first bevel gear 50 is rotatably arranged on the front and back end walls of the second transmission cavity 51, a first belt wheel 60 is fixedly arranged on the outer surface of the third rotating shaft 54 in a front-back symmetrical manner, a second bevel gear 55 positioned on the back side of the first belt wheel 60 is fixedly arranged on the outer surface of the third rotating shaft 54, and the first bevel gear 50 is meshed with, two brackets 58 are symmetrically and fixedly arranged at the front and back of the bottom wall of the lifting block 49, a fourth rotating shaft 53 is rotatably arranged between the brackets 58, a cutting knife 52 positioned between the brackets 58 is fixedly arranged on the outer surface of the fourth rotating shaft 53, the same second belt wheel 57 is fixedly arranged at the front and back of the fourth rotating shaft 53, and the second belt wheel 57 is in fit connection with the first belt wheel 60 through a belt 59; a screwing-up device 82 is arranged in the second working block 32, the screwing-up device 82 takes out the screws processed by the cutting device 81, a transmission device 83 located in the first transmission cavity 17 is arranged in the machine body 10, and the transmission device 83 transmits power to the cutting device 81 and the screwing-up device 82.

Advantageously, the screwing device 82 comprises an eccentric cavity 33 arranged inside the second working block 32, an inclined block 35 is fixedly arranged on the side wall of the eccentric cavity 33, a fifth rotating shaft 34 extending to the upper side of the second working block 32 is rotatably arranged on the top wall of the eccentric cavity 33, the same electromagnet 67 is fixedly arranged at the top ends of the fifth rotating shaft 34 and the second rotating shaft 31, a lifting cavity 37 with a downward opening at the lower side of the eccentric cavity 33 is arranged inside the second working block 32, symmetrical first spring cavities 38 are arranged on the left and right end walls of the lifting cavity 37, a first spring block 39 connected through a spring is arranged inside the first spring cavity 38 in a sliding manner, a sleeve 40 positioned inside the lifting cavity 37 is fixedly arranged between the left and right first spring cavities 38, and a rotary drum 41 positioned inside the lifting cavity 37 is rotatably arranged inside the sleeve 40, the top end of the rotary drum 41 is fixedly provided with a second spline shaft 36 extending into the centrifugal cavity 33 and in spline fit with the fifth rotating shaft 34, the top end of the second spline shaft 36 is fixedly provided with cantilevers 64 positioned in the centrifugal cavity 33 in a bilateral symmetry manner, a second spring block 65 connected through a spring is arranged in the cantilevers 64 in a sliding manner, the end surface of the second spring block 65 positioned outside the cantilevers 64 is provided with a rolling ball 66 in a rolling manner, the rolling ball 66 is always in contact with the inclined block 35, when the second spline shaft 36 drives the cantilevers 64 to rotate, the second spring block 65 is thrown out under the action of centrifugal force, and the cantilevers 64 drive the second spline shaft 36 to move downwards under the action of the inclined block 35, so that the rotary drum 41 is driven to move downwards.

Advantageously, the screwing device 82 further comprises the rotary drum 41 and a second spring cavity 42 arranged inside the rotary drum 41, the bottom wall of the second spring cavity 42 is provided with an opening, the circumferential side wall of the opening is fixedly provided with four clamping blocks 43 in a circumferential array, the four clamping blocks 43 are jointly slidably arranged up and down, a sliding rod 44 is arranged in the second spring cavity 42 and extends to the lower side of the rotary drum 41, the sliding rod 44 is further connected with the inner wall of the second spring cavity 42 through a spring, and the bottom end of the sliding rod 44 is fixedly provided with a straight knife 45 arranged on the lower side of the rotary drum 41.

Advantageously, the transmission device 83 includes a motor 11 fixedly disposed inside the machine body 10 and located on the upper side of the first transmission cavity 17, an output shaft 13 of the motor 11 extends downward into the first transmission cavity 17, a second gear 18 located in the first transmission cavity 17 is fixedly disposed at the bottom end of the output shaft 13, a sixth rotating shaft 20 located on the lower side of the output shaft 13 and extending to the bottom wall of the machine body 10 is rotatably disposed at the bottom wall of the first transmission cavity 17, a third gear 19 located on the lower side of the second gear 18 is fixedly disposed at the top end of the sixth rotating shaft 20, a seventh rotating shaft 28 connected by a spring is disposed at the bottom end of the sixth rotating shaft 20 in a spline fit manner, a spline housing 68 located on the lower side of the machine body 10 is fixedly disposed at the bottom end of the seventh rotating shaft 28, and a magnet 69 capable of attracting the electromagnet 67 is disposed inside the spline housing 68, when the magnet 69 is attracted to the electromagnet 67, the spline housing 68 sleeves the second rotating shaft 31 and is in spline fit with the second rotating shaft 31.

Advantageously, the bottom wall of said first transmission chamber 17 is rotatably provided with an eighth rotation shaft 22 located between said output shaft 13 and said first rotation shaft 25, a third spline shaft 23 is arranged on the outer surface of the eighth rotating shaft 22 in a spline fit manner, a fourth gear 21 is fixedly arranged on the outer surface of the third spline shaft 23, the fourth gear 21 may be simultaneously engaged with the second gear 18 and the third gear 19 or simultaneously engaged with the second gear 18 and the first gear 24, the body 10 is internally provided with a second piston chamber 26 located at the lower side of the first transmission chamber 17, the second piston cavity 26 is communicated with the first piston cavity 14 through an air pipe 15, a second piston rod 27 extending into the first transmission cavity 17 and contacting with the third spline shaft 23 is arranged in the second piston cavity 26 in a vertically sliding mode, and the second piston rod 27 can drive the third spline shaft 23 to move vertically.

The fixing and connecting method in this embodiment includes, but is not limited to, bolting, welding, and the like.

Sequence of mechanical actions of the whole device:

in the initial state, the fourth gear 21 is in simultaneous meshing with the second gear 18 and the third gear 19, the first gear 24 is not in meshing with the fourth gear 21, and the spline housing 68 is in spline fit with the second rotating shaft 31.

When the device of the present invention works, the handle 12 is held by hand to make the cutting knife 52 align with a screw to be taken out, the motor 11 is started to drive the output shaft 13 to rotate, thereby driving the second gear 18 to rotate, thereby driving the fourth gear 21 to rotate, thereby driving the third gear 19 to rotate, thereby driving the sixth rotating shaft 20 to rotate, thereby driving the seventh rotating shaft 28 to rotate, thereby driving the second rotating shaft 31 to rotate, thereby driving the first spline shaft 47 to rotate, thereby driving the fan 46 to rotate, thereby generating a downward thrust to drive the lifting block 49 to move downwards, so that the cutting knife 52 is attached to the top end of the screw, the first spline shaft 47 rotates to simultaneously drive the first bevel gear 50 to rotate, thereby driving the second bevel gear 55 to rotate, thereby driving the third rotating shaft 54 to rotate, thereby driving the first belt wheel 60 to rotate, thereby driving the second belt wheel 57 to rotate, thereby driving the fourth rotating shaft 53 to rotate, thereby driving the cutting knife 52 to rotate to perform a cutting operation on the top end of the screw, thereby generating a transverse groove on the top end of the screw, then pressing the first piston rod 16 to make the air in the first piston cavity 14 flow into the second piston cavity 26 through the air pipe 15, pushing the second piston rod 27 to move upwards to make the fourth gear 21 separate from the third gear 19, the fourth gear 21 is engaged with the first gear 24, i.e. the fourth gear 21 is simultaneously engaged with the second gear 18 and the first gear 24, thereby driving the first gear 24 to rotate, thereby driving the first rotating shaft 25 to rotate, thereby driving the rotating table 56 to rotate, while the third spline shaft 23 moves upwards, the magnet 69 is separated from the electromagnet 67, the spline housing 68 moves upwards under the driving of the seventh rotating shaft 28 to separate from the second rotating shaft 31, the turntable 56 rotates to make the second working block 32 and the first working block 29 exchange positions, after the second working block 32 moves to the first working block 29, the first piston rod 16 is released to make the fourth gear 21 and the first gear 24 mesh, so that the third gear 19 and the fourth gear 21 mesh again, at this time, the magnet 69 again attracts the electromagnet 67, so that the spline housing 68 and the fifth rotating shaft 34 spline-cooperate to drive the fifth rotating shaft 34 to rotate, so that the second spline shaft 36 rotates, so that the cantilever 64 rotates, and the second spring block 65 throws out of the cantilever 64 under the centrifugal force, meanwhile, under the action of the rolling ball 66 and the inclined block 35, the second spline shaft 36 moves downwards, so that the rotary drum 41 is driven to move downwards, the linear knife 45 is clamped in the transverse groove, and the rotary drum 41 rotates to drive the sliding rod 44 to rotate, so that the linear knife 45 is driven to rotate to take out the screw.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a smooth tooth screw of hand-held type takes out equipment, includes the organism and sets up the handle of organism right-hand member wall, its characterized in that: a first piston cavity is arranged in the handle, a first piston rod extending to the lower side of the handle is arranged in the first piston cavity in a vertically sliding manner, the first piston rod is connected with the top wall of the first piston cavity through a spring, a first transmission cavity is arranged in the machine body, the top wall of the first transmission cavity is rotatably provided with a first rotating shaft extending to the lower side of the machine body, the outer surface of the first rotating shaft is fixedly provided with a first gear positioned in the first transmission cavity, the bottom end of the first rotating shaft is fixedly provided with a rotating platform positioned at the lower side of the machine body, the left end wall of the rotating platform is fixedly provided with a first working block, the right end wall of the rotating platform is fixedly provided with a second working block, the top walls of the first working block and the second working block are fixedly provided with the same fixed block, and the inside of the fixed block is provided with, the spring clamping block can be matched with a groove arranged on the bottom wall of the machine body to limit the positions of the first working block and the second working block, a cutting device is arranged in the first working block and comprises a cutting cavity with a downward opening arranged in the first working block, a second rotating shaft extending to the upper side of the first working block is rotatably arranged on the top wall of the cutting cavity, spring rods capable of sliding up and down are symmetrically arranged on the left end wall and the right end wall of the cutting cavity and are connected with the inner wall of the cutting cavity through springs, a lifting block positioned in the cutting cavity is fixedly arranged between the left spring rod and the right spring rod, a second transmission cavity is arranged in the lifting block, a first spline shaft extending into the cutting cavity and matched with a spline of the second rotating shaft is rotatably arranged on the upper end wall of the second transmission cavity, and a fan wheel positioned on the upper side of the lifting block is fixedly arranged on the outer surface of the first spline shaft, a first bevel gear positioned in the second transmission cavity is fixedly arranged at the bottom end of the first spline shaft, a third rotating shaft positioned on the lower side of the first bevel gear is rotatably arranged on the front end wall and the rear end wall of the second transmission cavity, first belt wheels are symmetrically and fixedly arranged on the front and rear outer surfaces of the third rotating shaft, a second bevel gear positioned on the rear side of the first belt wheel is fixedly arranged on the outer surface of the third rotating shaft, the second bevel gear is meshed with the first bevel gear, two supports are symmetrically and fixedly arranged on the front and rear of the bottom wall of the lifting block, a fourth rotating shaft is rotatably arranged between the supports, a cutting knife positioned between the supports is fixedly arranged on the outer surface of the fourth rotating shaft, the same second belt wheel is fixedly arranged on the front and rear ends of the fourth rotating shaft, and the second; the internal portion of second work piece is provided with screws up the device, it is right to screw up the device takes out the operation after the cutting device is handled, the internal portion of organism is provided with and is located the transmission of first transmission intracavity, transmission does cutting device with screw up the device transmission power.

2. A hand-held sliding-tooth screw extracting apparatus as claimed in claim 1, wherein: the screwing device comprises a centrifugal cavity arranged in the second working block, an inclined block is fixedly arranged on the side wall of the centrifugal cavity, a fifth rotating shaft extending to the upper side of the second working block is rotatably arranged on the top wall of the centrifugal cavity, the top ends of the fifth rotating shaft and the second rotating shaft are fixedly provided with the same electromagnet, a lifting cavity with a downward opening and positioned at the lower side of the centrifugal cavity is arranged in the second working block, symmetrical first spring cavities are arranged on the left end wall and the right end wall of the lifting cavity, first spring blocks connected through springs are arranged in the first spring cavities in a vertically sliding manner, a sleeve positioned in the lifting cavity is fixedly arranged between the left spring cavity and the right spring cavity, a rotary drum positioned in the lifting cavity is rotatably arranged in the sleeve, and a second spline shaft which extends to the centrifugal cavity and is in spline fit with the fifth rotating shaft is fixedly arranged at the top end of the rotary drum, the top end of the second spline shaft is bilaterally and symmetrically fixedly provided with cantilevers located in the centrifugal cavity, a second spring block connected through a spring is arranged in the cantilever in a sliding mode, rolling balls are arranged on the end face, located outside the cantilever, of the second spring block in a rolling mode, the rolling balls are always in contact with the inclined block, when the second spline shaft drives the cantilever to rotate, the second spring block is thrown out under the action of the centrifugal force, and the cantilever drives the second spline shaft to move downwards under the action of the inclined block, so that the rotary drum is driven to move downwards.

3. A hand-held sliding-tooth screw extracting apparatus as claimed in claim 1, wherein: the screwing device further comprises the rotary drum and a second spring cavity arranged inside the rotary drum, an opening is formed in the bottom wall of the second spring cavity, four clamping blocks in a circumferential array are fixedly arranged on the circumferential side wall of the opening, a sliding rod which is located in the second spring cavity and extends to the lower side of the rotary drum is jointly arranged between the four clamping blocks in a vertical sliding mode, the sliding rod is further connected with the inner wall of the second spring cavity through a spring, and a straight knife which is located on the lower side of the rotary drum is fixedly arranged at the bottom end of the sliding rod.

4. A hand-held sliding-tooth screw extracting apparatus as claimed in claim 1, wherein: the transmission device comprises a motor which is fixedly arranged in the machine body and is positioned on the upper side of the first transmission cavity, the output shaft of the motor extends downwards into the first transmission cavity, the bottom end of the output shaft is fixedly provided with a second gear positioned in the first transmission cavity, the bottom wall of the first transmission cavity is rotatably provided with a sixth rotating shaft which is positioned at the lower side of the output shaft and extends to the bottom wall of the machine body, a third gear positioned on the lower side of the second gear is fixedly arranged at the top end of the sixth rotating shaft, a seventh rotating shaft connected through a spring is arranged at the bottom end of the sixth rotating shaft in a spline fit manner, the bottom end of the seventh rotating shaft is fixedly provided with a spline housing positioned at the lower side of the machine body, a magnet which can be attracted with the electromagnet is arranged in the spline housing, when the magnet is attracted with the electromagnet, the spline sleeve is sleeved on the second rotating shaft and is in spline fit with the second rotating shaft.

5. A hand-held sliding-tooth screw extracting apparatus as claimed in claim 1, wherein: first transmission chamber diapire rotates and is provided with and is located the output shaft with eighth pivot between the first pivot, the outer surface spline fit of eighth pivot is provided with the third integral key shaft, third integral key shaft surface fixation is provided with the fourth gear, the fourth gear can simultaneously with the second gear with third gear engagement or simultaneously with the second gear with first gear engagement, the organism is inside to be provided with and to be located the second piston chamber of first transmission chamber downside, the second piston chamber pass through the trachea with first piston chamber intercommunication, the second piston intracavity slides from top to bottom and is provided with and extends to first transmission intracavity with the second piston rod of third integral key shaft contact, the second piston rod can drive the third reciprocates the integral key shaft.