CN211759724U - Automatic screw driving machine - Google Patents

Abstract

The utility model relates to an automatic screw driving machine, which comprises a lower cabinet, an upper cabinet, a bedplate, a stand column, a cross beam, a transverse moving component and a positioning component; the bedplate is transversely fixed at the upper end of the upper cabinet, the lower cabinet is fixed on the upper plane of the bedplate, the crossbeam is transversely arranged above the bedplate and is arranged in the upper cabinet, the left end and the right end of the crossbeam are respectively fixed with a vertical upright post, and the lower ends of the two upright posts are respectively fixed on the upper plane of the bedplate; the two transverse moving assemblies are arranged on the front side of the cross beam in a bilateral symmetry mode, the two positioning assemblies are arranged on the bedplate and are respectively matched with the two transverse moving assemblies; the utility model discloses can accomplish the wrong income of screw automatically in order to improve work efficiency, reduce intensity of labour, and can guarantee that the screw twists the uniformity of angle, prevent to cause the smooth tooth of screw or product to damage to the defective rate has been reduced.

Description

Automatic screw driving machine

Technical Field

The utility model relates to an automatic screw machine.

Background

Threaded connection is a widely used detachable fixed connection, has simple structure, connects reliably, installs and removes advantages such as convenient, and the screw is the important part that realizes threaded connection, and current product is when adopting threaded connection to assemble, mostly comes manual screw-up with the help of the manual work, and work efficiency is low, and intensity of labour is big, and twists the angle and appear the deviation easily, leads to the smooth tooth of screw or product to damage, causes the defective rate higher, treats further improvement.

SUMMERY OF THE UTILITY MODEL

To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that an automatic screw machine of beating that provides one kind and has improved work efficiency, has reduced intensity of labour, and has reduced the defective rate is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: an automatic screw machine comprises a lower cabinet, an upper cabinet, a bedplate, upright posts, a cross beam, a transverse moving assembly and a positioning assembly; the horizontal moving mechanism is characterized in that the two horizontal moving assemblies comprise two, the two horizontal moving assemblies are arranged on the front side of the cross beam in a bilateral symmetry mode, the two positioning assemblies comprise two, and the two positioning assemblies are arranged on the bedplate and are respectively matched with the two horizontal moving assemblies; the positioning assembly comprises a box body, a fourth motor, a fourth bearing block, a fourth screw, a fourth internal thread block, a supporting block and a supporting assembly; the box body is transversely fixed on the upper plane of the bedplate, the support block is arranged in the box body, the fourth motor is fixed in the rear end of the box body, the fourth internal thread block is fixed on the lower side of the support block, the fourth screw rod is transversely inserted into the fourth internal thread block in a threaded manner, a rotatable fourth bearing block is sleeved at each of two ends of the fourth screw rod, the two fourth bearing blocks are fixed on the upper plane of the bedplate and are arranged in the cover body, the rotating shaft of the fourth motor is transversely forwards fixed at the rear end of the fourth screw rod, and the supporting component is arranged above the box body and is connected with the support block.

Preferably, the support assembly comprises a bottom plate, a top plate, a U-shaped block, a T-shaped block, an adjusting assembly and a buffer; the bottom plate is transversely arranged above the box body, and the left side and the right side of the supporting block both penetrate through the box body outwards and are both fixed on the lower plane of the bottom plate; the top of bottom plate is transversely located to the roof, the lower plane front side of bottom plate is fixed with two bilateral symmetry's U type pieces, correspondingly, the lower plane front side of roof is fixed with two bilateral symmetry's T type piece, two rotatable the inserting connection respectively in two U type pieces of T type piece, the roof with be equipped with two symmetric distribution's adjusting part between the bottom plate, still inlay the buffer that is equipped with two vertical distributions in the bottom plate, two the rear side of two adjusting part is located respectively to the buffer, two the flexible end of buffer all upwards pushes up tightly on the lower plane of roof.

Preferably, the adjusting assembly comprises a first side block, a cylinder, a second side block and a rotating shaft; the cylinder is movably arranged in the bottom plate, two first side blocks which are bilaterally and symmetrically distributed are fixed on the upper plane of the bottom plate, correspondingly, two second side blocks which are bilaterally and symmetrically distributed are fixed on the lower plane of the top plate, the cylinder is rotatably connected between the two first side blocks, the rotating shaft is transversely and rotatably connected between the two second side blocks, and the telescopic end of the cylinder is upwards fixed on the rotating shaft.

Preferably, the traversing component comprises a first box body, a first motor, a first bearing block, a first screw, a first internal thread block, a moving block, a first sliding block, a first guide rail and a lifting component; the first box body is transversely fixed on the side surface of the front side of the cross beam, the first motor is fixed at one end of the first box body, the moving block is arranged in the first box body, the first internal thread block is embedded in the moving block, the first screw rod is transversely inserted and screwed in the first internal thread block, two rotatable first bearing blocks are sleeved at both ends of the first screw rod, the two first bearing blocks are fixed on the inner wall of the rear side of the first box body, the rotating shaft of the first motor transversely penetrates through one end of the first box body and is fixed with one end of the first screw rod, the first guide rails comprise two, the two first guide rails are transversely fixed on the inner wall of the rear side of the first box body in a mutually parallel mode, a first sliding block is sleeved on each first guide rail, the two first sliding blocks are fixed on the side face of the rear side of the moving block, and the lifting assembly is arranged on the front side of the first box body and connected with the first internal thread block.

Preferably, the lifting assembly comprises a second box body, a second motor, a second bearing block, a lifting block, a second sliding block, a second guide rail, a second internal thread block, a second screw and a driving assembly; the second box body is vertically arranged on the front side of the first box body, the front side of the moving block penetrates through the first box body forwards and is fixed on the rear side face of the second box body, the lifting block is arranged in the second box body, the second internal thread block is embedded in the lifting block, the second screw rod is vertically inserted and screwed in the second internal thread block, two rotatable second bearing blocks are sleeved at two ends of the second internal thread block, the two second bearing blocks are fixed on the rear side inner wall of the second box body, the second motor is fixed at the upper end of the second box body, the rotating shaft of the second motor vertically faces downwards the upper end of the second box body and is fixed with the upper end of the second screw rod, two second sliding blocks which are vertically and symmetrically distributed are fixed on the rear side face of the lifting block, a movable second guide rail is arranged in the two second sliding blocks, and the two second guide rails are vertically fixed on the rear side inner wall of the second box body, the driving assembly is arranged on the front side of the second box body and connected with the lifting block.

Preferably, the driving assembly comprises a back plate, a guide rod cylinder, a carrier plate, a third sliding block, a third guide rail, a seat block, an electric screwdriver, a connecting shaft, a guide block and a screw head; the back plate is vertically arranged on the front side of the second box body, and the front side of the lifting block penetrates through the second box body forwards and is fixed on the rear plane of the back plate; the guide rod cylinder is vertically arranged on the front side plane of the back plate, the guide block is fixed on the front side plane of the back plate and is arranged below the guide rod cylinder, the third guide rail is vertically fixed on the front side plane of the back plate and is arranged between the guide rod cylinder and the guide block, the support plate is vertically arranged on the front side of the third guide rail, the third slide block is fixed on the rear side plane of the support plate and is sleeved on the third guide rail, and the telescopic end of the guide rod cylinder is vertically downwards fixed on the upper side of the support plate; the seat piece is fixed on the front side plane of support plate, electric screwdriver vertically inlays and establishes in the seat piece, the vertical and rotatable interlude of connecting axle sets up in the guide block, the lower extreme at the connecting axle is fixed to the screw head, electric screwdriver's the vertical downward fixation of axis of rotation is in the upper end of connecting axle.

Compared with the prior art, the utility model has the advantages of: the utility model discloses can accomplish the wrong income of screw automatically in order to improve work efficiency, reduce intensity of labour, and can guarantee that the screw twists the uniformity of angle, prevent to cause the smooth tooth of screw or product to damage to the defective rate has been reduced.

Drawings

FIG. 1 is a left front side structural view of the present invention;

fig. 2 is a left front side top view structure diagram of the lifting assembly of the present invention;

fig. 3 is a top view of the left front side of the driving assembly of the present invention;

FIG. 4 is a right rear side structural view of the positioning assembly of the present invention;

fig. 5 is a left rear side structural view of the adjusting assembly of the present invention.

Detailed Description

As shown in fig. 1 to 5, an automatic screw driving machine comprises a lower cabinet 1, an upper cabinet 2, a bedplate 3, a stand column 4, a cross beam 7, a transverse moving assembly 5 and a positioning assembly 6; the bedplate 3 is transversely fixed at the upper end of the upper cabinet 2, the lower cabinet 1 is fixed on the upper plane of the bedplate 3, the crossbeam 7 is transversely arranged above the bedplate 3 and inside the upper cabinet 2, the left end and the right end of the crossbeam 7 are both fixed with a vertically distributed upright post 4, and the lower ends of the two upright posts 4 are both fixed on the upper plane of the bedplate 3; the two transverse moving assemblies 5 are arranged on the front side of the cross beam 7 in a bilateral symmetry mode, the two positioning assemblies 6 are arranged on the bedplate 3, and the two positioning assemblies 6 are respectively matched with the two transverse moving assemblies 5; the transverse moving component 5 comprises a first box body 8, a first motor 9, a first bearing block 10, a first screw rod 11, a first internal thread block 12, a moving block 13, a first sliding block 14, a first guide rail 15 and a lifting component; the first box body 8 is transversely fixed on the front side surface of the cross beam 7, the first motor 9 is fixed at one end of the first box body 8, the moving block 13 is arranged inside the first box body 8, the first internal thread block 12 is embedded in the moving block 13, the first screw 11 is transversely inserted into the first inner thread block 12 in a threaded manner, a rotatable first bearing block 10 is sleeved at each of two ends of the first screw 11, the two first bearing blocks 10 are fixed on the inner wall of the rear side of the first box body 8, a rotating shaft of the first motor 9 transversely penetrates through one end of the first box body 8 and is fixed with one end of the first screw 11, the first guide rails 15 comprise two guide rails 15, the two first guide rails 15 are transversely fixed on the inner wall of the rear side of the first box body 8 in a mutually parallel manner, each first guide rail 15 is sleeved with a first sliding block 14, the two first sliding blocks 14 are fixed on the side face of the rear side of the moving block 13, and the lifting assembly is arranged on the front side of the first box body 8 and is connected with the first inner thread block 12; the lifting assembly comprises a second box body 16, a second motor 17, a second bearing block 18, a lifting block 19, a second sliding block 22, a second guide rail 23, a second internal thread block 20, a second screw 21 and a driving assembly; the second box body 16 is vertically arranged at the front side of the first box body 8, the front side of the moving block 13 passes through the first box body 8 forward and is fixed on the rear side surface of the second box body 16, the lifting block 19 is arranged in the second box body 16, the second inner thread block 20 is embedded in the lifting block 19, the second screw 21 is vertically inserted and screwed in the second inner thread block 20, both ends of the second inner thread block 20 are respectively sleeved with a rotatable second bearing block 18, both the second bearing blocks 18 are fixed on the rear inner wall of the second box body 16, the second motor 17 is fixed at the upper end of the second box body 16, the rotating shaft of the second motor 17 vertically faces the upper end of the second box body 16 downward and is fixed with the upper end of the second screw 21, two second sliding blocks 22 which are vertically and symmetrically distributed are fixed on the rear side surface of the lifting block 19, a movable second guide rail 23 is arranged in each of the two second sliding blocks 22, the two second guide rails 23 are vertically fixed on the inner wall of the rear side of the second box body 16, and the driving assembly is arranged on the front side of the second box body 16 and connected with the lifting block 19; the driving assembly comprises a back plate 24, a guide rod cylinder 25, a carrier plate 26, a third sliding block 29, a third guide rail 30, a seat block 27, an electric screwdriver 28, a connecting shaft 31, a guide block 32 and a screw head 33; the back plate 24 is vertically arranged at the front side of the second box body 16, and the front side of the lifting block 19 passes through the second box body 16 forwards and is fixed on the rear plane of the back plate 24; the guide rod cylinder 25 is vertically arranged on the front side plane of the back plate 24, the guide block 32 is fixed on the front side plane of the back plate 24 and is arranged below the guide rod cylinder 25, the third guide rail 30 is vertically fixed on the front side plane of the back plate 24 and is arranged between the guide rod cylinder 25 and the guide block 32, the support plate 26 is vertically arranged on the front side of the third guide rail 30, the third slide block 29 is fixed on the rear side plane of the support plate 26 and is sleeved on the third guide rail 30, and the telescopic end of the guide rod cylinder 25 is vertically downwards fixed on the upper side of the support plate 26; the seat block 27 is fixed on the front side plane of the carrier plate 26, the electric screwdriver 28 is vertically embedded in the seat block 27, the connecting shaft 31 is vertically and rotatably inserted in the guide block 32, the screw head 33 is fixed at the lower end of the connecting shaft 31, and the rotating shaft of the electric screwdriver 28 is vertically and downwardly fixed at the upper end of the connecting shaft 31; the positioning assembly 6 comprises a box 34, a fourth motor 35, a fourth bearing block 36, a fourth screw 37, a fourth internal thread block 38, a support block 39 and a support assembly; the box body 34 is transversely fixed on the upper plane of the bedplate 3, the support block 39 is arranged in the box body 34, the fourth motor 35 is fixed in the rear end of the box body 34, the fourth internal thread block 38 is fixed on the lower side of the support block 39, the fourth screw 37 is transversely inserted and screwed in the fourth internal thread block 38, two ends of the fourth screw 37 are respectively sleeved with a rotatable fourth bearing block 36, the two fourth bearing blocks 36 are respectively fixed on the upper plane of the bedplate 5 and are respectively arranged in the cover body 27, the rotating shaft of the fourth motor 35 is transversely and forwardly fixed at the rear end of the fourth screw 37, and the support component is arranged above the box body 34 and is connected with the support block 39; the lower plane of the supporting block 39 is provided with two sliding chutes 391 which are symmetrically and parallelly distributed, correspondingly, the left side and the right side of the box body 34 are both outwards provided with an inserting strip 341 which is symmetrically and parallelly distributed, and the two inserting strips 341 are respectively upwards inserted into the two sliding chutes 391; the support assembly comprises a bottom plate 41, a top plate 42, a U-shaped block 43, a T-shaped block 44, an adjusting assembly and a buffer 40; the bottom plate 41 is transversely arranged above the box body 34, and the left side and the right side of the supporting block 39 both outwards penetrate through the box body 34 and are both fixed on the lower plane of the bottom plate 41; the top plate 42 is transversely arranged above the bottom plate 41, two U-shaped blocks 43 which are symmetrically distributed left and right are fixed on the front side of the lower plane of the bottom plate 41, correspondingly, two T-shaped blocks 44 which are symmetrically distributed left and right are fixed on the front side of the lower plane of the top plate 42, the two T-shaped blocks 44 are respectively and rotatably inserted into the two U-shaped blocks 43, two adjusting components which are symmetrically distributed are arranged between the top plate 42 and the bottom plate 41, two vertically distributed buffers 40 are also embedded in the bottom plate 41, the two buffers 40 are respectively arranged on the rear sides of the two adjusting components, and the telescopic ends of the two buffers 40 are upwards propped against the lower plane of the top plate 42; the adjusting assembly comprises a first side block 45, a cylinder 46, a second side block 47 and a rotating shaft 48; the cylinder 46 is movably arranged in the bottom plate 41, two first side blocks 45 which are distributed in bilateral symmetry are fixed on the upper plane of the bottom plate 41, correspondingly, two second side blocks 47 which are distributed in bilateral symmetry are fixed on the lower plane of the top plate 42, the cylinder 46 is rotatably connected between the two first side blocks 45, the rotating shaft 48 is transversely and rotatably connected between the two second side blocks 47, and the telescopic end of the cylinder 46 is upwards fixed on the rotating shaft 48.

When in use: the fourth motor 35 is started to rotate the rotating shaft of the fourth motor, so that the fourth screw 37 is driven to rotate between the two fourth bearing blocks 36, the fourth internal thread block 38 is driven to move forwards according to the threaded connection principle, the supporting block 39 and the supporting component are driven to move forwards, and when the supporting block 39 moves, the two sliding grooves 391 slide forwards along the two inserting strips 341 respectively, so that the moving stability of the supporting block 39 is ensured; fixing the product on the top plate 42 by means of a clamp, driving the telescopic ends of the two air cylinders 46 to extend outwards or contract inwards, and further lifting up or lowering down the rear side of the top plate 42 by means of the rotating shaft 48, so that the rear side of the top plate 42 swings upwards or downwards by means of the two U-shaped blocks 43 and the two T-shaped blocks 44, and the product is adjusted to a proper angle; the cylinder 46 will rotate a certain angle in the bottom plate 41 by means of the two first side blocks 45 when telescoping; the fourth motor 35 is started to rotate reversely to drive the product to move backwards below the driving component in one corresponding transverse moving component 5 according to the same principle, the first motor 9 is driven to rotate the rotating shaft of the first motor, the first screw 11 is driven to rotate between the two first bearing blocks 10, the first inner thread block 12 and the moving block 13 are driven to move leftwards and rightwards together according to the principle of threaded connection, the transverse position of the driving component is adjusted by virtue of the lifting component, when the moving block 13 moves, the two first sliding blocks 14 can respectively slide along the two first guide rails 15, and therefore the moving stability of the moving block 13 is guaranteed; then, the second motor 17 is started to rotate the rotating shaft of the second motor, so that the second screw 21 is driven to rotate between the two second bearing blocks 18, the second internal thread block 20 and the lifting block 19 are driven to move up and down, the longitudinal position of the driving assembly is adjusted by means of the back plate 24, and when the lifting block 19 moves, the two second sliding blocks 22 respectively slide along the two second guide rails 23, so that the moving stability of the lifting block 19 is ensured; then, the telescopic end of the guide rod cylinder 25 is driven to extend outwards, so that the carrier plate 26 moves downwards along the third guide rail 30 by virtue of the third sliding block 29, the electric screwdriver 28 is driven to move downwards by virtue of the seat block 27, the connecting shaft 31 slides downwards in the guide block 32, the screw head 33 is driven to move downwards and be inserted into a screw on a product, and when the screw head is inserted, the telescopic end of the buffer 40 can counteract the inertia force of the screw head 33 pressing downwards, so that the product is prevented from being crushed; finally, the electric screwdriver 28 is activated to rotate its rotation shaft, thereby rotating the screw head 33 via the connection shaft 31, thereby tightening the screw.

The threaded connection is a detachable fixed connection which is widely used, and has the advantages of simple structure, reliable connection, convenient assembly and disassembly and the like, the screw is an important part for realizing the threaded connection, the existing product is assembled by adopting the threaded connection, the screw is manually screwed up mostly by the aid of manpower, the working efficiency is low, the labor intensity is high, and the screwing angle is easy to deviate, so that the screw is easy to slip or the product is damaged, and the reject ratio is high; the utility model discloses can accomplish the wrong income of screw automatically in order to improve work efficiency, reduce intensity of labour, and can guarantee that the screw twists the uniformity of angle, prevent to cause the smooth tooth of screw or product to damage to the defective rate has been reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (6)

1. An automatic screw machine comprises a lower cabinet, an upper cabinet, a bedplate, upright posts, a cross beam, a transverse moving assembly and a positioning assembly; the horizontal moving mechanism is characterized in that the two horizontal moving assemblies comprise two, the two horizontal moving assemblies are arranged on the front side of the cross beam in a bilateral symmetry mode, the two positioning assemblies comprise two, and the two positioning assemblies are arranged on the bedplate and are respectively matched with the two horizontal moving assemblies; the positioning assembly comprises a box body, a fourth motor, a fourth bearing block, a fourth screw, a fourth internal thread block, a supporting block and a supporting assembly; the box body is transversely fixed on the upper plane of the bedplate, the support block is arranged in the box body, the fourth motor is fixed in the rear end of the box body, the fourth internal thread block is fixed on the lower side of the support block, the fourth screw rod is transversely inserted into the fourth internal thread block in a threaded manner, a rotatable fourth bearing block is sleeved at each of two ends of the fourth screw rod, the two fourth bearing blocks are fixed on the upper plane of the bedplate and are arranged in the cover body, the rotating shaft of the fourth motor is transversely forwards fixed at the rear end of the fourth screw rod, and the supporting component is arranged above the box body and is connected with the support block.

2. The automatic screw driving machine according to claim 1, wherein the supporting assembly comprises a bottom plate, a top plate, a U-shaped block, a T-shaped block, an adjusting assembly and a buffer; the bottom plate is transversely arranged above the box body, and the left side and the right side of the supporting block both penetrate through the box body outwards and are both fixed on the lower plane of the bottom plate; the top of bottom plate is transversely located to the roof, the lower plane front side of bottom plate is fixed with two bilateral symmetry's U type pieces, correspondingly, the lower plane front side of roof is fixed with two bilateral symmetry's T type piece, two rotatable the inserting connection respectively in two U type pieces of T type piece, the roof with be equipped with two symmetric distribution's adjusting part between the bottom plate, still inlay the buffer that is equipped with two vertical distributions in the bottom plate, two the rear side of two adjusting part is located respectively to the buffer, two the flexible end of buffer all upwards pushes up tightly on the lower plane of roof.

3. The automatic screw driving machine according to claim 2, wherein the adjusting assembly comprises a first side block, a cylinder, a second side block and a rotating shaft; the cylinder is movably arranged in the bottom plate, two first side blocks which are bilaterally and symmetrically distributed are fixed on the upper plane of the bottom plate, correspondingly, two second side blocks which are bilaterally and symmetrically distributed are fixed on the lower plane of the top plate, the cylinder is rotatably connected between the two first side blocks, the rotating shaft is transversely and rotatably connected between the two second side blocks, and the telescopic end of the cylinder is upwards fixed on the rotating shaft.

4. The automatic screw driving machine according to claim 1, wherein the traverse moving assembly comprises a first box body, a first motor, a first bearing block, a first screw rod, a first internal thread block, a moving block, a first sliding block, a first guide rail and a lifting assembly; the first box body is transversely fixed on the side surface of the front side of the cross beam, the first motor is fixed at one end of the first box body, the moving block is arranged in the first box body, the first internal thread block is embedded in the moving block, the first screw rod is transversely inserted and screwed in the first internal thread block, two rotatable first bearing blocks are sleeved at both ends of the first screw rod, the two first bearing blocks are fixed on the inner wall of the rear side of the first box body, the rotating shaft of the first motor transversely penetrates through one end of the first box body and is fixed with one end of the first screw rod, the first guide rails comprise two, the two first guide rails are transversely fixed on the inner wall of the rear side of the first box body in a mutually parallel mode, a first sliding block is sleeved on each first guide rail, the two first sliding blocks are fixed on the side face of the rear side of the moving block, and the lifting assembly is arranged on the front side of the first box body and connected with the first internal thread block.

5. The automatic screw driving machine according to claim 4, wherein the lifting assembly comprises a second box body, a second motor, a second bearing block, a lifting block, a second sliding block, a second guide rail, a second internal thread block, a second screw rod and a driving assembly; the second box body is vertically arranged on the front side of the first box body, the front side of the moving block penetrates through the first box body forwards and is fixed on the rear side face of the second box body, the lifting block is arranged in the second box body, the second internal thread block is embedded in the lifting block, the second screw rod is vertically inserted and screwed in the second internal thread block, two rotatable second bearing blocks are sleeved at two ends of the second internal thread block, the two second bearing blocks are fixed on the rear side inner wall of the second box body, the second motor is fixed at the upper end of the second box body, the rotating shaft of the second motor vertically faces downwards the upper end of the second box body and is fixed with the upper end of the second screw rod, two second sliding blocks which are vertically and symmetrically distributed are fixed on the rear side face of the lifting block, a movable second guide rail is arranged in the two second sliding blocks, and the two second guide rails are vertically fixed on the rear side inner wall of the second box body, the driving assembly is arranged on the front side of the second box body and connected with the lifting block.

6. The automatic screwing machine according to claim 5, wherein the driving assembly comprises a back plate, a guide rod cylinder, a carrier plate, a third slider, a third guide rail, a seat block, an electric screwdriver, a connecting shaft, a guide block and a screw head; the back plate is vertically arranged on the front side of the second box body, and the front side of the lifting block penetrates through the second box body forwards and is fixed on the rear plane of the back plate; the guide rod cylinder is vertically arranged on the front side plane of the back plate, the guide block is fixed on the front side plane of the back plate and is arranged below the guide rod cylinder, the third guide rail is vertically fixed on the front side plane of the back plate and is arranged between the guide rod cylinder and the guide block, the support plate is vertically arranged on the front side of the third guide rail, the third slide block is fixed on the rear side plane of the support plate and is sleeved on the third guide rail, and the telescopic end of the guide rod cylinder is vertically downwards fixed on the upper side of the support plate; the seat piece is fixed on the front side plane of support plate, electric screwdriver vertically inlays and establishes in the seat piece, the vertical and rotatable interlude of connecting axle sets up in the guide block, the lower extreme at the connecting axle is fixed to the screw head, electric screwdriver's the vertical downward fixation of axis of rotation is in the upper end of connecting axle.

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