CN111993035B

CN111993035B - Automatic locking screw device

Info

Publication number: CN111993035B
Application number: CN202010750354.3A
Authority: CN
Inventors: 李荣辉; 梁梅新; 董涛; 陈裕华; 李山敏
Original assignee: Guangdong Evenwin Precision Technology Co Ltd
Current assignee: Guangdong Evenwin Precision Technology Co Ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-11-16
Anticipated expiration: 2040-07-30
Also published as: CN111993035A

Abstract

The invention relates to an automatic screw locking device, which comprises a distribution mechanism and a tightening mechanism, wherein the distribution mechanism comprises: the input assembly comprises a conveying piece, and a conveying channel for conveying screws is arranged on the conveying piece. And the limiting assembly comprises a limiting block, and the limiting block can move relative to the conveying piece to block or open the conveying channel. And the guide-out assembly comprises two oppositely arranged supporting pieces, a guide-out channel capable of receiving the screw from the conveying channel is formed between the two supporting pieces at intervals, and the two supporting pieces can move towards each other until the two supporting pieces are abutted to each other to close the guide-out channel. And the output assembly comprises a pushing piece and an output pipe which are connected with each other, an output channel and an air inlet channel which are communicated with each other are arranged on the pushing piece, one end of the output channel can receive a screw from the guide channel, the other end of the output channel is in butt joint with the output pipe, and the output pipe is connected with the tightening mechanism.

Description

Automatic screw locking device

Technical Field

The invention relates to the technical field of mechanical tools, in particular to an automatic screw locking device.

Background

When two members are connected by a plurality of screws such as screws, the screws are usually selected manually, and then the selected screws are tightened, so that the two members are connected. Therefore, the mode of manually selecting and screwing the screws obviously influences the working efficiency, is not beneficial to the large-scale production of products and is also not beneficial to the reduction of the product cost.

Disclosure of Invention

The invention solves the technical problem of how to improve the working efficiency of screwing the screw.

An automatic screw locking device for tightening a screw, the automatic screw locking device comprising a dispensing mechanism for delivering a screw to a tightening mechanism and a tightening mechanism, the dispensing mechanism comprising:

the input assembly comprises a conveying piece, wherein a conveying channel for conveying screws is arranged on the conveying piece;

the limiting assembly comprises a limiting block, and the limiting block can move relative to the conveying piece to block or open the conveying channel;

the guide-out assembly comprises two opposite supporting pieces, a guide-out channel capable of receiving a screw from the conveying channel is formed between the two supporting pieces at intervals, and the two supporting pieces can move towards each other until the two supporting pieces are abutted to each other to close the guide-out channel; and

the output assembly comprises a pushing piece and an output pipe which are connected with each other, an output channel and an air inlet channel which are communicated with each other are arranged on the pushing piece, one end of the output channel can receive a screw from the guide-out channel, the other end of the output channel is in butt joint with the output pipe, and the output pipe is connected with the tightening mechanism; when the guide-out channel is closed, the pushing piece moves and abuts against the support piece to close the output channel.

In one embodiment, the input assembly further comprises a vibration plate provided with a vibration cavity, the conveying member is connected with the vibration plate, and the conveying channel is used for receiving a screw from the vibration cavity.

In one embodiment, the limiting assembly further comprises a limiting cylinder, the limiting block is connected with a piston rod of the limiting cylinder, and the limiting block can move in a direction forming an included angle with the extending direction of the conveying channel so as to block the conveying channel.

In one embodiment, the leading-out assembly further comprises a leading-out air cylinder, and the leading-out air cylinder drives the two supporting pieces to move towards or away from each other so as to close or open the leading-out channel.

In one embodiment, the payout assembly further comprises a stop connected with the support to block the payout channel.

In one embodiment, the pushing piece is positioned below the supporting piece, and the screw falls from the guide-out channel to the output channel under the action of self gravity.

In one embodiment, the ejector comprises a first surface and a second surface facing opposite, the output channel comprises a plurality of first output holes and second output holes, the first output holes and the second output holes both penetrate through the first surface to form first openings, and all the first openings are arranged in a straight line on the first surface; the first output hole and the second output hole both penetrate through the second surface to form second openings, and a straight line formed by the arrangement of the second openings of the first output hole is parallel to a straight line formed by the arrangement of the second openings of the second output hole.

In one embodiment, the tightening mechanism includes a first driver, a movable block, a receiver, and a tightening device, the receiver coupled to the movable block and configured to receive a screw from the dispensing mechanism, the movable block and the receiver both slidably engaged with the tightening device, the first driver configured to move the movable block.

In one embodiment, the tightening mechanism further includes a sliding block, a guide rod fixed to the movable block and slidably engaged with the sliding block, the tightening unit is connected to the sliding block, the second driver drives the sliding block to slide relative to the guide rod, and the third driver is configured to drive the tightening unit to rotate.

In one embodiment, the receiver comprises a fixed block, a first swinging block, a second swinging block and a spring, the fixed block is provided with a sliding hole and an introduction hole, the sliding hole is in sliding fit with the tightening device, the first swinging block and the second swinging block are both rotatably connected with the fixed block, the first swinging block and the second swinging block jointly enclose a blanking hole, the spring is connected with the first swinging block and the second swinging block, when the tightening device exerts acting force on the spring, the first swinging block and the second swinging block move away from each other to increase the aperture of the blanking hole, and screws entering the introduction hole are discharged from the blanking hole.

One technical effect of one embodiment of the invention is that: the automatic screw conveying device has the advantages that the screws can be automatically conveyed to the screwing mechanism through the distribution structure, and meanwhile, the screwing mechanism can automatically fix the screws on workpieces, so that the working efficiency of screwing the screws can be greatly improved.

Drawings

FIG. 1 is a schematic perspective view of an automatic screw locking device according to an embodiment;

FIG. 2 is a schematic perspective view of a portion of the automatic screw locking device shown in FIG. 1;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is an enlarged view of the structure at B in FIG. 2;

FIG. 5 is a perspective view of the receiver of the automatic screw locking device shown in FIG. 1;

FIG. 6 is a schematic partial perspective view of the receiver of FIG. 5;

FIG. 7 is a schematic perspective view of a dispensing structure of the automatic screw locking device shown in FIG. 1;

FIG. 8 is a partial perspective view of the dispensing mechanism of FIG. 7 with one of the support members removed;

FIG. 9 is a schematic perspective view of an output assembly of the dispensing mechanism of FIG. 7;

FIG. 10 is a schematic partial perspective view of the output assembly of FIG. 9;

fig. 11 is a schematic perspective view of the pushing member of the output assembly shown in fig. 9.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "inner", "outer", "left", "right" and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Referring to fig. 1, 2 and 3, the automatic screw locking device 10 according to an embodiment of the present invention is used for tightening a screw 20, and the screw 20 is used for fixing two workpieces 40, where the two workpieces 40 may be two parts of a smartphone housing. The automatic screw locking device 10 comprises a distribution mechanism 100 and a tightening mechanism 200, wherein the distribution mechanism 100 is used for arranging and sequencing disordered screws 20 and sequentially inputting the sequenced screws 20 to the tightening mechanism 200, and the tightening mechanism 200 tightens the screws 20 to fix two workpieces 40.

Referring to fig. 2 and 7, in some embodiments, the dispensing mechanism 100 includes an input assembly 110, a limiting assembly 120, a lead-out assembly 130, an output assembly 140, an adjustment assembly 150, and a carrier stage 160.

Referring to fig. 7 and 8, the input assembly 110 includes a vibration plate 111 and a conveying member 112, the vibration plate 111 is provided with a vibration cavity 111a, and after the disordered screws 20 are placed in the vibration cavity 111a, the screws 20 are sequentially output from the vibration cavity 111a under the continuous vibration of the vibration plate 111. The conveying member 112 may be a straight rod having a certain length, one end of the conveying member 112 is connected to the vibration tray 111, the other end of the conveying member 112 is connected to the bearing table 160, a conveying channel 112a is formed on the conveying member 112, the conveying channel 112a may be a linear channel extending horizontally and laterally, and one end of the conveying channel 112a is abutted to the vibration cavity 111a, so that the screw 20 output from the vibration cavity 111a directly enters the conveying channel 112 a.

The limiting assembly 120 comprises a limiting cylinder 121 and a limiting block 122, the cylinder of the limiting cylinder 121 is fixed on the bearing table 160, the limiting block 122 is fixed on the piston rod of the limiting cylinder 121, the piston rod of the limiting cylinder 121 can do reciprocating telescopic motion along the horizontal longitudinal direction, so that the piston rod of the limiting cylinder 121 pushes the limiting block 122 to do horizontal longitudinal motion relative to the bearing table 160, obviously, the motion track of the limiting block 122 is perpendicular to the extending direction of the conveying channel 112a, and of course, the motion track of the limiting block 122 can also form an acute included angle with the extending direction of the conveying channel 112 a. When the limiting cylinder 121 pushes the limiting block 122 to move close to the conveying channel 112a until covering the conveying channel 112a, the limiting block 122 forms a blocking effect on the conveying channel 112a, and in the case that the screw 20 moving in the conveying channel 112a contacts with the limiting block 122, the limiting block 122 will form an interference on the screw 20, thereby preventing the screw 20 from moving from the conveying channel 112a on one side of the limiting block 122 to the conveying channel 112a on the other side of the limiting block 122.

The guiding-out assembly 130 comprises two guiding-out cylinders 131, two supporting members 132 and a stop member 133, the supporting members 132 can be of a flat plate structure, the two supporting members 132 are oppositely arranged, the cylinder barrels of the guiding-out cylinders 131 are fixed on the bearing table 160, and the supporting members 132 are connected with the piston rods of the guiding-out cylinders 131. The piston rod of the guiding cylinder 131 can drive the two supports 132 to move towards or away from each other, when the two supports 132 move away from each other, the gap between the two supports 132 is gradually increased, and when the gap is increased to a reasonable value, the gap will form a guiding channel 132a, the guiding channel 132a can be a straight channel extending along the horizontal transverse direction, the end of the guiding channel 132a is butted with the end of the conveying channel 112a, so that the guiding channel 132a and the conveying channel 112a are both located on the same straight line, and the screw 20 in the conveying channel 112a can directly enter the guiding channel 132 a. When the bolt is located in the lead-out channel 132a, the shaft of the screw 20 is engaged with the lead-out channel 132a, and the cross-sectional dimension of the cap of the screw 20 is larger than the cross-sectional dimension of the lead-out channel 132a, so that the cap of the bolt abuts against the supporter 132, thereby suspending the entire screw 20 on the supporter 132 to move in the lead-out channel 132 a. When the two supports 132 move toward each other until they abut against each other, the gap between the two supports 132 is completely eliminated, i.e., the lead-out passage 132a is completely closed.

The stop 133 may be fixedly disposed on one of the supporting members 132, the stop 133 may also be a plate-like structure, a part of the stop 133 covers the supporting members 132, and another part of the stop 133 covers the guiding-out channel 132a, so that the stop 133 blocks the guiding-out channel 132a, when the number of screws 20 accommodated in the guiding-out channel 132a is sufficiently large, the screws 20 at the outermost edge in the guiding-out channel 132a will abut against the stop 133, i.e., the stop 133 interferes with the screws 20, and at this time, the number of screws 20 accommodated in the guiding-out channel 132a reaches a saturation level, i.e., the guiding-out channel 132a will not receive the screws 20 from the conveying channel 112a any more. By changing the mounting position of the stopper 133, the distance from the end of the lead-out channel 132a corresponding to the conveyance channel 112a to the stopper 133 can be changed, thereby changing the maximum value of the number of screws 20 that can be accommodated in the lead-out channel 132 a.

The output assembly 140 includes a pushing cylinder 141, a pushing member 142, an output pipe 144 and a vent pipe 145, and the pushing member 142 may be located right below the supporting member 132. The pushing piece 142 is provided with an output channel 142c and an air inlet channel 142d, the output channel 142c extends vertically, the air inlet channel 142d can extend horizontally and transversely, and the air inlet channel 142d is communicated with the output channel 142 c. The upper end of the output channel 142c corresponds to the lead-out channel 132a, so that the screw 20 in the lead-out channel 132a can enter into the output channel 142c from the upper end of the output channel 142 c. The lower end of the output channel 142c is connected to the output pipe 144, and the screw 20 in the output channel 142c enters the output pipe 144 from the lower end thereof.

Referring to fig. 9, 10 and 11, the pushing element 142 may be a block structure, and the pushing element 142 includes a first surface 142a and a second surface 142b, the first surface 142a and the second surface 142b are opposite in orientation, the first surface 142a is an upper surface and is disposed toward the supporting element 132, and the second surface 142b is a lower surface. The output channel 142c includes a first output hole 143a and a second output hole 143b, the number of the first output hole 143a and the second output hole 143b may be plural, both the first output hole 143a and the second output hole 143b penetrate the first surface 142a to form a first opening 143c, the screw 20 in the lead-out channel 132a enters the first output hole 143a or the second output hole 143b from the first opening 143c, and the first openings 143c of both the first output hole 143a and the second output hole 143b are aligned on the first surface 142 a. Both the first output holes 143a and the second output holes 143b penetrate the second surface 142b to form second openings 143d, and the second openings 143d of the first output holes 143a are aligned in a line parallel to a line formed by the second openings 143d of the second output holes 143 b. In fact, the central axes of the first output hole 143a and the second output hole 143b are inclined at a certain angle with respect to the vertical direction, and the central axes of the two adjacent first output holes 143a and the second output holes 143b intersect in a V-shape in a different plane.

The number of the intake passages 142d may be two, one of the intake passages 142d communicating with each of the first output holes 143a, and the other intake passage 142d communicating with each of the second output holes 143 b. One vent pipe 145 is provided at both ends of each of the air inlet channels 142d, so that four vent pipes 145 are provided on the pushing member 142, when high-pressure air is introduced into the vent pipes 145, the high-pressure air sequentially enters the first output hole 143a and the second output hole 143b through the vent pipes 145 and the air inlet channels 142d, and the air pressure pushes the screw 20 to move in the first output hole 143a, the second output hole 143b and the output pipe 144. One end of the output pipe 144 is disposed at the second opening 143d, and the other end of the output pipe 144 is connected to the tightening mechanism 200, so that the gas pressure can push the screw 20 into the tightening mechanism 200 through the output pipe 144, so that the tightening mechanism 200 can fix the screw 20 to the workpiece 40.

Referring to fig. 8, the cylinder of the pushing cylinder 141 is fixed on the plummer 160, the piston rod of the pushing cylinder 141 is connected to the pushing element 142, and the piston rod of the pushing cylinder 141 is also contracted in a reciprocating manner in the vertical direction, thereby pushing the pushing element 142 to move in the vertical direction to approach or separate from the supporting element 132. When the pushing cylinder 141 pushes the pushing member 142 to move a set distance away from the supporting member 132, a proper distance is kept between the pushing member 142 and the supporting member 132, so as to prevent the lower end of the screw 20 from contacting the pushing member 142 to generate interference, and prevent the screw 20 from being unable to move in the guiding channel 132 a. When all the screws 20 in the outlet channel 132a fall into the output channel 142c, the pushing cylinder 141 can push the pushing member 142 to move upward to make the first surface 142a contact with the supporting member 132, so as to ensure that the supporting member 132 blocks the first opening 143c, at this time, high-pressure gas is introduced into the vent pipe 145, and since the first opening 143c is blocked, the high-pressure gas cannot leak from the first opening 143c, and the high-pressure gas exerts pressure on the screws 20 in the output channel 142c, enters the output pipe 144 from the second opening 143d, and finally enters the tightening mechanism 200 through the output pipe 144.

Referring to fig. 7, the adjusting assembly 150 includes a base 151, screws 152, and a slide 153, the base 151 is fixedly disposed, the number of the screws 152 may be four, the screws 152 are vertically disposed, and the base 151 is connected to the screws 152 and abuts against the conveying member 112. When the mounting position of the base 151 on the screw 152 is changed, the distance between the slider 153 and the base 151 can be changed, thereby changing the inclination angles of the conveying member 112 and the conveying passage 112a to control the conveying speed of the screw 20 in the conveying passage 112 a.

When the dispensing mechanism 100 is operated, in a first step, the limiting cylinder 121 is first made to push the limiting block 122 to move away from the conveying channel 112a, the limiting block 122 is prevented from blocking the conveying channel 112a, and then the vibration disk 111 is opened, so that the screw 20 in the vibration cavity 111a enters the guide-out channel 132a through the conveying channel 112 a. When the bolt contained in the outlet channel 132a reaches saturation, the limiting cylinder 121 is enabled to push the limiting block 122 to move close to the conveying channel 112a until the conveying channel 112a is blocked, so that the screw 20 in the conveying channel 112a cannot enter the saturated outlet channel 132 a. In the second step, the guiding-out cylinder 131 pushes the two supporting members 132 to move away from each other, so that the width of the guiding-out channel 132a is increased, and then the supporting members 132 lose the supporting function of the screw 20, at this time, the screw 20 in the guiding-out channel 132a will automatically fall into the output channel 142c under the action of gravity. In a third step, the guiding-out cylinder 131 pushes the two supporting members 132 to move toward each other, so that the two supporting members 132 abut against each other, thereby completely eliminating the gap between the two supporting members 132, i.e., completely closing the guiding-out passage 132 a. Fourthly, the pushing cylinder 141 pushes the pushing member 142 to move upward, so that the first surface 142a is attached to the supporting member 132, and the supporting member 132 is ensured to block the first opening 143c, at this time, high-pressure gas is introduced into the vent pipe 145, and the high-pressure gas enters the output passage 142c through the gas inlet passage 142d, so that the screw 20 of the output passage 142c is input into the tightening mechanism 200 through the output pipe 144.

Referring also to fig. 2, 3 and 4, in some embodiments, a tightening mechanism 200 is positioned above the dispensing mechanism 100, the tightening mechanism 200 including a first driver 210, a movable block 220, a tightener 230, a receiver 240, a slider 250, a guide bar 260, a second driver 270, a third driver 280, and a frame 290. The jig 30 is placed on the rack 290, two workpieces 40 to be connected by the screws 20 are placed on the jig 30, the jig 30 has a limiting function on the movement of the workpieces 40 in the horizontal direction, and the auxiliary positioning members are pressed on the workpieces 40, that is, the workpieces 40 are clamped between the jig 30 and the auxiliary positioning members.

The first driver 210 is fixed on the frame 290, the movable block 220 is slidably connected to the frame 290, and the first driver 210 may be a lead screw motor and drives the movable block 220 to slide up and down relative to the frame 290. Referring to fig. 4, 5 and 6, the receiver 240 includes a fixed block 241, a first swinging block 242, a second swinging block 243 and a spring, the fixed block 241 can be fixedly connected to the movable block 220, the fixed block 241 is provided with a sliding hole 241a and an introducing hole 241b, the output pipe 144 of the distribution mechanism 100 is matched with the introducing hole 241b, the screw 20 output by the output pipe 144 enters the introducing hole 241b, the tightening device 230 is in sliding fit with the sliding hole 241a, both the first swinging block 242 and the second swinging block 243 are rotatably connected to the fixed block 241, the first swinging block 242 and the second swinging block 243 jointly enclose a blanking hole 242a, the spring is connected to the first swinging block 242 and the second swinging block 243, when the tightening device 230 moves downwards and applies force to the spring, the first and second swing blocks 242 and 243 are moved apart from each other to increase the diameter of the blanking hole 242a, and the screw 20 introduced into the introduction hole 241b is discharged from the blanking hole 242a to the receiver 240 and enters the mounting position of the workpiece 40.

The second driver 270 and the third driver 280 are both fixed to the frame 290, the second driver 270 may be a lead screw motor, and the third driver 280 may be a rotary motor. The slider 250 is slidably coupled to the frame 290, the lower end of the guide bar 260 is fixed to the movable block 220, the upper end of the guide bar 260 is inserted into the slider 250 such that the slider 250 and the guide bar 260 form a sliding fit relationship, and the tightening unit 230 may be fixed to the slider 250 such that when the second driver 270 pushes the slider 250 to move downward relative to the frame 290 and the guide bar 260, the tightening unit 230 will follow the slider 250 to move downward to approach the workpiece 40 so that the tightening unit 230 contacts the screw 20. After the tightening unit 230 contacts the screw 20, the third driver 280 rotates the tightening unit 230 to tighten the screw 20 to achieve the connection of the two workpieces 40. In fact, the tightening unit 230 functions as a knife for the screwdriver 20.

When the tightening mechanism 200 is operated, in a first step, the output pipe 144 of the distribution mechanism 100 inputs a screw 20 into the input hole 241b, the first swing block 242 and the second swing block 243 abut against each other under the action of spring force, so that the aperture of the blanking hole 242a is minimized, at this time, the screw 20 in the input hole 241b falls into the blanking hole 242a, the rod part of the screw 20 can be matched with the blanking hole 242a, the cap part of the screw 20 is larger than the aperture of the blanking hole 242a and cannot pass through the blanking hole 242a, so that the cap part of the screw 20 abuts against the first swing block 242 and the second swing block 243, and the whole screw 20 is suspended in the blanking hole 242 a. In the second step, the first driver 210 drives the movable block 220 to move downward, so that the fixed block 241 on the receiver 240 abuts against the auxiliary positioning element, that is, the fixed block 241 exerts an abutting force on the workpiece 40 through the auxiliary positioning element, so as to perform a good limit on the workpiece 40 in the vertical direction. In the third step, the second driver 270 drives the sliding block 250 to move downwards relative to the frame 290, and during the process that the tightening device 230 moves downwards along with the sliding block 250, the tightening device 230 slides downwards relative to the fixed block 241 in the sliding hole 241a, when the tightening device 230 moves downwards until contacting the spring and exerting force on the spring, the first swinging block 242 and the second swinging block 243 move away from each other to increase the aperture of the blanking hole 242a, and the screw 20 entering the leading-in hole 241b is discharged from the blanking hole 242a to the whole receiver 240 and enters the installation position of the workpiece 40. The downward movement of the slider 250 is continued so that the tightening unit 230 slides downward in the slide hole 241a until it abuts against the screw 20 on the work 40. In a fourth step, the third driver 280 rotates the tightening unit 230 to tighten the screw 20 to connect the two workpieces 40.

Since the screw 20 can be automatically conveyed to the tightening mechanism 200 by the distribution structure and the tightening mechanism 200 can automatically fix the screw 20 to the workpiece 40, the work efficiency of tightening the screw 20 can be greatly improved. The number of the tightening mechanisms 200 may be one or more, for example, the number of the tightening mechanisms 200 may be two, according to actual needs.

Referring to fig. 1, the automatic screw locking device 10 may further include a housing 300, a dispensing mechanism 100, and a tightening mechanism 200 in the housing 300, and a moving roller 310 is provided at a lower portion of the housing 300 to move the entire housing 300. The upper part of the cabinet 300 is provided with a warning light 320 to play a warning role. The case 300 is further provided with a control panel 330, a physical key 340 and a safety grating 350.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An automatic locking screw device for tightening screws, characterized in that the automatic screw locking device comprises a distribution mechanism and a tightening mechanism, and the distribution mechanism is used for delivering screws to the tightening mechanism, and the distribution mechanism include:

The input assembly includes a conveying member, and the conveying member is provided with a conveying channel for conveying the screw;

a limit assembly, including a limit block, the limit block can move relative to the conveying member to block or open the conveying channel;

The lead-out assembly includes two oppositely arranged support members, a lead-out channel capable of receiving screws from the conveying channel is formed between the two support members, and the two support members can move toward each other until they abut each other to close the outlet channel; and

The output assembly includes a push piece and an output pipe that are connected to each other, the push piece is provided with an output channel and an air intake channel that communicate with each other, and one end of the output channel can receive screws from the export channel, so The other end of the output channel is butted with the output pipe, and the output pipe is connected to the tightening mechanism; when the output channel is closed, the pusher moves and abuts against the support to close the output channel .

2. The automatic screw locking device according to claim 1, wherein the input assembly further comprises a vibrating plate provided with a vibrating cavity, the conveying member is connected with the vibrating plate, and the conveying channel is used for receiving screws from the vibration chamber.

3 . The automatic screw locking device according to claim 1 , wherein the limit assembly further comprises a limit cylinder, the limit block is connected with the piston rod of the limit cylinder, and the limit block is 3 . It can move in a direction forming an angle with the extending direction of the conveying passage to block the conveying passage.

4. The automatic locking screw device according to claim 1, wherein the lead-out assembly further comprises a lead-out cylinder, and the lead-out cylinder drives the two support members to move toward or away from each other, so as to close or open the export channel.

5 . The automatic locking screw device according to claim 4 , wherein the lead-out assembly further comprises a stopper, and the stopper is connected with the support to block the lead-out channel. 6 .

6 . The automatic screw locking device according to claim 1 , wherein the push member is located below the support member, and the screw falls from the lead-out channel to the output channel under the action of its own gravity. 7 .

7 . The automatic locking screw device according to claim 1 , wherein the pushing member comprises a first surface and a second surface facing opposite, and the output channel comprises a plurality of first output holes and a second output The first output hole and the second output hole both penetrate the first surface to form a first opening, and all the first openings are arranged in a straight line on the first surface; the first opening Both an output hole and the second output hole pass through the second surface to form a second opening, and a straight line formed by the arrangement of the second openings of the first output hole is parallel to the second opening of the second output hole. A straight line formed by the arrangement of openings.

8. The automatic locking screw device according to claim 1, wherein the tightening mechanism comprises a first driver, a movable block, a receiver and a tightener, the receiver is connected with the movable block and is used for receiving a The screw of the distribution mechanism, the movable block and the receiver are all slidably matched with the tightener, and the first driver is used to drive the movable block to move.

9 . The automatic locking screw device according to claim 8 , wherein the tightening mechanism further comprises a slider, a guide rod, a second driver and a third driver, the guide rod is fixed on the movable block and In sliding cooperation with the slider, the screwdriver is connected with the slider, the second driver drives the slider to slide relative to the guide rod, and the third driver is used for driving the screwdriver to rotate.

10 . The automatic screw locking device according to claim 8 , wherein the receiver comprises a fixed block, a first swing block, a second swing block and a spring, and the fixed block is provided with a sliding hole and an introduction hole, 10 . The sliding hole is slidably matched with the tightener, the first swing block and the second swing block are both rotatably connected with the fixed block, and the first swing block and the second swing block are in common A blanking hole is formed, the spring is connected with the first swing block and the second swing block, when the tightener exerts force on the spring, the first swing block and the second swing block The swinging blocks move away from each other to increase the diameter of the blanking holes, and the screws entering the introduction holes are discharged from the blanking holes.