Magnetic suction head and magnetic suction type automatic screw locking machine

Abstract

The utility model discloses a magnetic head and a magnetic type automatic screw locking machine, which comprise a lock tube driven by a motor to rotate, a partition part is arranged in the middle of an inner cavity of the lock tube and divides the inner cavity of the lock tube into an upper cavity and a lower cavity, the lower cavity of the lock tube is arranged to be of a polygonal structure matched with a nut, and the upper cavity and the lower cavity of the lock tube are connected through a bolt. And a limiting block is movably arranged in the upper cavity. According to the magnetic suction head, through the special design of the interior of the magnetic suction head, nuts can be magnetically sucked, the positions of the nuts can be limited, it is guaranteed that the nuts are in a stable posture, the two steps of sucking the nuts and driving the nuts to rotate to a bolt can be achieved only through one mechanism, the action of the mechanism is smoother, the intermediate pause time is omitted, and the production efficiency is improved. And the machining efficiency is higher, the structure is simpler and more convenient, the equipment use and maintenance cost is reduced, two sets of mechanisms are not needed for switching, the situation that the nuts cannot be assembled due to inclination and deviation in the switching process is avoided, and the assembling yield is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of screw locking machines, in particular to a magnetic adsorption type automatic screw locking machine. Background Technique

[0002] A screw is a tool that uses the circular rotation of an object's inclined plane and friction to gradually tighten the parts of a utensil. It is the most common tool in industry. In screw production, screws and nuts need to be assembled in sets to form a complete set of screw nuts for packaging and sales.

[0003] The most basic way to assemble screw nuts is manual assembly, which is too inefficient. Therefore, various automatic screw locking devices have emerged, which realize the automatic feeding and tightening operations of screws through various electric and pneumatic components, and simplify the screw tightening process through the equipment.

[0004] Many existing automatic screw locking machines clamp screws or nuts through a clamping device for preliminary docking, and then use an electric bit or an electric rotating mechanism to rotate the screws or nuts for assembly. This method divides the clamping and tightening into two steps, which are realized by using a set of mechanisms respectively. On the one hand, the cost is relatively high. On the other hand, the actions are relatively complex and not simple and convenient enough. Moreover, during the conversion process between the two steps, the screws or nuts are prone to offset and dislocation, resulting in the inability of the screw threads to engage and the inability to perform assembly, and there are some deficiencies in use. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a magnetic adsorption head and a magnetic adsorption type automatic screw locking machine, which solve the problems that the existing screw locking machines divide the clamping and tightening into two steps and are realized by using a set of mechanisms respectively. On the one hand, the cost is relatively high. On the other hand, the actions are relatively complex and not simple and convenient enough. Moreover, during the conversion process between the two steps, the screws or nuts are prone to offset and dislocation, resulting in the inability to perform assembly.

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0007] A magnetic adsorption head includes a lock tube driven by a motor to rotate. A partition part is arranged in the middle of the inner cavity of the lock tube, dividing the inner cavity of the lock tube into an upper cavity and a lower cavity. The lower cavity of the lock tube is set as a polygonal structure adapted to the nut. A limiting block is movably arranged in the upper cavity. A guide rod is fixedly connected to the bottom of the limiting block. The guide rod movably penetrates through the partition part and extends into the lower cavity. A magnet is arranged at the lower end of the guide rod. A spring is arranged between the top of the magnet and the partition part.

[0008] A magnetic adsorption type automatic screw locking machine, including the above-mentioned magnetic adsorption head, further includes a frame. At the front part of the top of the frame, there is a feeding conveyor belt that conveys backward. Above the feeding conveyor belt, there is a feeding plate. At the front end of the feeding plate, there are multiple material guiding grooves opened backward, and bolts are arranged in the material guiding grooves and move backward;

[0009] At the rear end of the top of the frame, there is a vibrating feeding tray for holding nuts. On the frame and below the front end of the vibrating feeding tray, there is a material receiving mechanism that can move back and forth;

[0010] Above the rear end of the feeding conveyor belt on the frame, there is a gantry. On the gantry, there is a movable plate that can be lifted and lowered. Multiple servo motors are arranged at intervals on the movable plate. On the output shaft of each servo motor, there is a magnetic adsorption head fixedly installed corresponding to the position of the material guiding groove. The magnetic adsorption head sucks nuts from the material receiving mechanism and is driven by the servo motor to rotate onto the bolts;

[0011] On the frame, there is a clamping assembly for clamping bolts and discharging materials.

[0012] Furthermore, on the feeding plate, there is an adjusting straight plate. At the position corresponding to each material guiding groove on the adjusting straight plate, there is a feeding port.

[0013] Furthermore, on the front side of the vibrating feeding tray, there are multiple discharge ports corresponding one by one to the material guiding grooves. Each discharge port is communicated with a discharge guiding groove.

[0014] Furthermore, the material receiving mechanism includes a bracket, a blanking plate and a first cylinder. The bracket is fixedly installed on the frame and is located at the bottom of the vibrating feeding tray. The blanking plate is fixedly installed on the bracket and is below the front end of the discharge guiding groove. At the position corresponding to each discharge guiding groove on the blanking plate, there are blanking holes. On the bracket, there is a moving plate that can move back and forth below the blanking plate. The first cylinder is arranged on the bracket and its output end is fixedly connected to the moving plate. At the position corresponding to the blanking hole on the moving plate, there is a material receiving hole. Below the material receiving port of the moving plate, there is a top material cylinder, and the output end of the top material cylinder is located in the inner cavity of the material receiving hole for jacking up the nuts.

[0015] Furthermore, the clamping assembly includes a mounting plate. The mounting plate is movably arranged on the frame and is located at the rear part of the feeding conveyor belt. Vertically arranged on the mounting plate is a third cylinder. The output end of the third cylinder is provided with a supporting plate. At the position corresponding to each material guiding groove on the supporting plate, there is a pneumatic clamping jaw.

[0016] Further, a discharge opening is provided at the rear end of the feed conveyor belt on the frame. When the clamping assembly is at the rear end, it is located above the discharge opening. A discharge conveyor belt is arranged at the position corresponding to the discharge opening at the bottom of the frame.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] Through the special design of the magnetic suction head, the nut can be magnetically picked up and the position of the nut can be limited to ensure that the nut is in a stable posture. Only one set of mechanisms can be used to achieve two steps of sucking the nut and driving the nut to rotate and screw onto the bolt. The action of the mechanism is smoother, saving the intermediate pause time, with higher processing efficiency, simpler and more convenient structure, reducing the equipment use and maintenance costs. There is no need to switch between two sets of mechanisms, avoiding the situation where the nut tilts or shifts during the switching process, resulting in inability to assemble, and the assembly yield rate is higher. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the magnetic suction head;

[0020] Figure 2 It is a schematic structural diagram of the magnetic suction type automatic screw locking machine;

[0021] Figure 3 It is a schematic structural diagram of the clamping assembly in the magnetic suction type automatic screw locking machine;

[0022] Figure 4 It is a schematic structural diagram of the discharge opening in the magnetic suction type automatic screw locking machine;

[0023] Figure 5 It is a schematic structural diagram of the magnetic suction type automatic screw locking machine;

[0024] Figure 6 It is a schematic structural diagram of the vibrating hopper and the material receiving mechanism in the magnetic suction type automatic screw locking machine;

[0025] Figure 7 It is a schematic structural diagram of the material receiving mechanism in the magnetic suction type automatic screw locking machine;

[0026] Figure 8 It is a schematic structural diagram of the material receiving mechanism during material transfer in the magnetic suction type automatic screw locking machine.

[0027] In the figure: 1 - frame, 2 - feeding conveyor belt, 3 - feeding plate, 31 - material guiding groove, 32 - straightening plate, 4 - vibrating feeding tray, 41 - discharging guiding groove, 5 - material receiving mechanism, 51 - bracket, 52 - blanking plate, 53 - first cylinder, 54 - blanking hole, 55 - material shifting plate, 56 - material receiving hole, 57 - ejector cylinder, 6 - gantry, 7 - moving plate, 8 - clamping assembly, 81 - mounting plate, 82 - second cylinder, 83 - third cylinder, 84 - supporting plate, 85 - pneumatic gripper, 9 - fixed seat, 91 - lock tube, 92 - limiting block, 93 - guide rod, 94 - magnet, 95 - spring, 10 - servo motor, 11 - discharging opening, 12 - discharging conveyor belt, 13 - fourth cylinder, 14 - guide rail. Detailed implementation mode

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figure 1 , the present invention provides a technical solution:

[0030] A magnetic suction head includes a lock tube 91 driven by a motor to rotate. A partition part is arranged in the middle of the inner cavity of the lock tube 91, dividing the inner cavity of the lock tube 91 into an upper cavity and a lower cavity. The lower cavity of the lock tube 91 is set to a polygonal structure adapted to a nut. A limiting block 92 is movably arranged in the upper cavity. The bottom of the limiting block 92 is fixedly connected with a guide rod 93. The guide rod 93 movably penetrates through the partition part and extends into the lower cavity. A magnet 94 is arranged at the lower end of the guide rod 93. A spring 95 is arranged between the top of the magnet 94 and the partition part.

[0031] The lower cavity of the lock tube 91 is set to a shape adapted to the nut, such as a hexagon. When taking the material, if the edge line of the nut is exactly opposite to the edge line of the cavity, the nut will not be blocked and can be sucked upward by the magnet 94 to take the material. If the edge line of the nut is not opposite to the edge line of the cavity, the nut will be blocked and cannot be sucked into the lower cavity. At this time, the magnetic suction head should be controlled to rotate to adjust the angle of the magnetic suction head relative to the nut for taking the material.

[0032] After the nut is sucked into the lower cavity, its outer edge is restricted by the lower cavity. When the magnetic suction head rotates, the nut can be driven to rotate synchronously by the lock tube 91 and screwed onto the bolt for assembly.

[0033] During the assembly process, the bolt gradually extends into the lower cavity of the lock tube 91 relatively, pushing up the guide rod 93 and the magnet 94, thus driving the limit block 92 to move upward. At the same time, the spring 95 is compressed to generate elastic force. When the assembly is completed and the magnetic head is separated from the bolt nut, the guide rod 93 and the magnet 94 are no longer squeezed and will reset downward under the elastic force of the spring 95 to facilitate the subsequent nut suction.

[0034] It further includes a fixed seat 9. The top end of the lock tube 91 is fixedly connected to the bottom of the fixed seat 9. A connection hole is provided at the top of the fixed seat 9 for connecting to the output shaft of the motor.

[0035] As Figures 2-8 , a magnetic adsorption type automatic screw locking machine is provided, including the above-mentioned magnetic head. It further includes a frame 1. A feeding conveyor belt 2 that conveys backward is arranged at the front part of the top of the frame 1. Above the feeding conveyor belt 2, a feeding plate 3 is provided. A plurality of material guiding grooves 31 are formed at the front end of the feeding plate 3 and open backward. The bolts are arranged in the material guiding grooves 31 and move backward.

[0036] At both sides of the front end of each material guiding groove 31, an inverted V shape is formed to guide the bolts, so that the bolts move backward under the action of the feeding conveyor belt 2 and can enter the plurality of material guiding grooves 31 respectively without being blocked at the front end of the feeding plate 3.

[0037] A straightening plate 32 is arranged on the feeding plate 3. Feeding ports are provided at the positions corresponding to each material guiding groove 31 on the straightening plate 32.

[0038] The height of the feeding port is adapted to the height of the bolt, and the width is adapted to the maximum diameter of the bolt, allowing the bolts in the vertical state to pass through. And the feeding ports of the straightening plate 32 are used to sort and guide the incoming bolts, so that the bolts are arranged in a straight line and conveyed backward, avoiding left - right deviation and misalignment, and can also block the inclined or overturned bolts.

[0039] A vibrating feeding tray 4 for holding nuts is arranged at the rear end of the top of the frame 1. A material receiving mechanism 5 that can move back and forth is arranged on the frame 1 and below the front end of the vibrating feeding tray 4.

[0040] The vibrating feeding tray 4 is a prior art, including a tray body and a vibrating mechanism, which can vibrate the materials, sort and arrange the materials, and discharge them orderly.

[0041] The nuts are discharged into the material receiving mechanism 5 orderly under the action of the vibrating feeding tray 4, and are transferred to the picking position by the material receiving mechanism 5 for picking and assembling.

[0042] Above the rear end of the feeding conveyor belt 2 on the frame 1, a gantry 6 is provided. A movable plate 7 is liftably arranged on the gantry 6. A plurality of servo motors 10 are arranged at intervals on the movable plate 7. A magnetic head corresponding to the position of the material guiding groove 31 is fixedly installed on the output shaft of each servo motor 10. The fixing seat 9 of the magnetic head is fixedly installed on the output shaft of the servo motor 10. The magnetic head sucks the nut from the material receiving mechanism 5 and is driven by the servo motor 10 to be screwed onto the bolt.

[0043] A fourth cylinder 13 is arranged on the gantry 6 to drive the movable plate 7 to lift, thereby driving the servo motor 10 and the magnetic head to lift. And the magnetic head is driven by the servo motor 10 to rotate for tightening and assembling operations.

[0044] The magnetic head is directly above the rear end of the material guiding groove 31. The rear end of the material guiding groove 31 is sealed, so that the magnetic head is opposite to the last bolt.

[0045] After the nut enters the material receiving mechanism 5, the material receiving mechanism 5 moves forward to move the nut below the magnetic head. The movable plate 7 descends, driving the magnetic head to move downward to pick up the nut. Then the material receiving mechanism 5 retreats and resets. The magnetic head drives the nut to continue to move downward to cooperate with the bolt. Then the servo motor 10 rotates, thereby driving the magnetic head and the nut to rotate, and screwing the nut onto the bolt.

[0046] The torque of the assembly is controlled by adjusting the number of turns of the servo motor 10.

[0047] A clamping assembly 8 for clamping the bolt and discharging the material is arranged on the frame 1.

[0048] The clamping assembly 8 can move back and forth. When at the front end, it can clamp the last bolt to prevent it from rotating synchronously during assembly. After assembly, the clamping assembly 8 clamps the bolt, rises upward, disengages from the material guiding groove 31 and moves backward to transfer it to the discharging position, leaving the rear end of the material guiding groove 31 empty, so that the bolt at the front end continues to move backward to the assembly position.

[0049] A plurality of discharge ports corresponding to the material guiding grooves 31 one by one are arranged on the front side of the vibrating feeding tray 4. Each discharge port is communicated with a discharge guiding groove 41. The nut moves forward along the discharge guiding groove 41. A material dropping port is arranged at the bottom of the front end of the discharge guiding groove 41. The nut at the foremost end drops from the material dropping port and enters the material receiving mechanism.

[0050] The material receiving mechanism 5 includes a bracket 51, a blanking plate 52 and a first cylinder 53. The bracket 51 is fixedly installed on the frame 1 and is located at the bottom of the vibrating feeding tray 4. The blanking plate 52 is fixedly installed on the bracket 51 and is below the front end of the discharge guiding groove 41. Blanking holes 54 are formed at positions corresponding to each of the discharge guiding grooves 41 on the blanking plate 52. A material moving plate 55 that can move back and forth below the blanking plate 52 is arranged on the bracket 51. The first cylinder 53 is arranged on the bracket 51 and its output end is fixedly connected to the material moving plate 55. A material receiving hole 56 is formed at a position corresponding to the blanking hole 54 on the material moving plate 55. A material ejecting cylinder 57 is arranged below the material moving plate 55, and the output end of the material ejecting cylinder 57 is located in the inner cavity of the material receiving hole 56 for jacking up the nut.

[0051] The nuts that enter the discharge guiding groove 41 from the vibrating feeding tray 4 fall downward from the discharge port of the discharge guiding groove 41 and enter the blanking holes 54 on the blanking plate 52 and continue to fall. At this time, the material moving plate 55 should be in the material receiving position, that is, the position where the material receiving hole 56 corresponds to the blanking hole 54, and the nuts fall into the material receiving hole 56.

[0052] The first cylinder 53 is used to drive the material moving plate 55 to move back and forth, adjust the position of the material moving plate 55, so as to adjust the position of the material receiving hole 56 and make it switch between the material taking position and the material receiving position.

[0053] The material receiving hole 56 is in a shape adapted to the nut, such as a pentagon.

[0054] The material receiving hole 56 is first in the material receiving position, that is, below the blanking hole 54. When the vibrating feeding tray 4 vibrates, the nuts move under the vibration, slide out from the discharge port, and slowly move forward along the discharge guiding groove 41. The foremost nut will fall into the corresponding blanking hole 54 and then fall downward into the material receiving hole 56 on the material moving plate 55. Then the first cylinder 53 acts to drive the material moving plate 55 to move forward, so that the material receiving hole 56 containing the nut moves below the corresponding magnetic head and is in the material taking position for the magnetic head to take the material. At this time, the material ejecting cylinder 57 acts to jack up the nut upward, so that the nut leaks out of the material receiving hole 56 by about half of its height, which is convenient for the magnetic head to suck. After the magnetic head finishes taking the material, the material moving plate 55 moves backward to the material receiving position, receives the next nut, and cycles in this way.

[0055] A position switch is arranged on the material moving plate 55 to control the stroke of its forward and backward movement and ensure its accurate position.

[0056] When taking the material, the moving plate 7 descends to drive the magnetic head to descend, so that the bottom end of the locking tube 91 presses against the nut. At this time, the lower half of the nut is still inside the material receiving hole 56 and cannot rotate. At this time, the servo motor 10 works to drive the magnetic head to rotate a certain number of turns. If the positions of the nut and the bottom end of the locking tube 91 exactly correspond when the locking tube 91 presses against the nut, that is, the ridge line of the nut is opposite to the ridge line of the lower cavity, the nut is not obstructed and can be directly sucked upward into the lower cavity by the magnet 94, and is separated from the material receiving hole 56, so that the movement of the material moving plate 55 is not obstructed. If they do not correspond, during the rotation of the locking tube 91, the nut remains stationary until the ridge lines are opposite, and then it is sucked into the lower cavity of the locking tube 91.

[0057] After the material taking is completed, the material moving plate 55 retracts, and then the moving plate 7 continues to descend. At the same time, the servo motor 10 rotates to drive the nut to be screwed onto the bolt. During this process, the bolt gradually penetrates into the lower cavity of the locking tube 91, and will upwardly squeeze the guide rod 93 and the magnet 94. The magnet 94 is separated from the nut, and the spring 95 is compressed to generate elastic force. The nut is driven to rotate by the inner contour of the locking tube 91. When the assembly is completed, the servo motor 10 stops working, and the moving plate 7 rises. The guide rod 93 and the magnet 94 are no longer squeezed, and will be reset downward to the lowest point under the elastic force of the spring 95 to pick up the next nut.

[0058] The clamping assembly 8 includes a mounting plate 81. The mounting plate 81 is movably arranged on the frame 1 in the front-back direction and is located behind the feeding conveyor belt 2. A third air cylinder 83 is vertically arranged on the mounting plate 81. A supporting plate 84 is arranged at the output end of the third air cylinder 83. A pneumatic gripper 85 is arranged at a position corresponding to each guide groove 31 on the supporting plate 84.

[0059] A second air cylinder 82 for driving the mounting plate 81 to move back and forth is arranged on the frame 1.

[0060] A guide rail 14 for the mounting plate 81 to move back and forth is arranged on the frame 1.

[0061] In the initial state, the mounting plate 81 is at the front end, the third air cylinder 83 is in the retracted state, the supporting plate 84 is at the lowest point, and the pneumatic gripper 85 is initially in the open state and is located at the position of the last bolt in the guide groove 31. When a screw enters the rearmost end of the guide groove 31, the pneumatic gripper 85 tightens to clamp the bolt and fixes the bolt to prevent it from rotating and being unable to be tightened when screwing the nut. After an interval of time (this time should be the set time for screwing the nut onto the bolt), the third air cylinder 83 extends, and the pneumatic gripper 85 is lifted by the supporting plate 84, so as to lift the assembled bolt and nut out of the guide groove 31. Then the second air cylinder 82 drives the mounting plate 81 to retract. After moving the bolt and nut to the discharging position through the pneumatic gripper 85, the pneumatic gripper 85 opens, and the bolt and nut fall out for discharging.

[0062] Then the mounting plate 81 moves forward to the front end again, and the second cylinder 82 contracts to drive the support plate 84 down to the lowest point, so that the pneumatic gripper 85 is again at the position of the last bolt to clamp the next bolt, and so on in a cycle.

[0063] Sensors are respectively arranged on both sides of the rear end of each material guiding groove 31 on the feeding plate 3 to detect whether there is a bolt at the last position of the material guiding groove 31, so as to control the pneumatic gripper 85 to clamp. The sensor can be a photoelectric sensor or other components.

[0064] A discharge opening 11 is provided at the rear end of the feeding conveyor belt 2 on the frame 1. When the clamping assembly 8 is at the rear end, it is located above the discharge opening 11. A discharge conveyor belt 12 is arranged at the position corresponding to the discharge opening 11 at the bottom of the frame 1.

[0065] The assembled bolt and nut fall into the discharge opening 11 and then fall onto the discharge conveyor belt 12 for discharging.

[0066] Through the special design of the magnetic suction head, it can magnetically pick up the nut, limit the position of the nut, ensure that the nut is in a stable posture, and only one set of mechanisms can be used to achieve the two steps of sucking the nut and driving the nut to rotate and screw onto the bolt. The action of the mechanism is more fluent, saving the intermediate pause time, with higher processing efficiency, simpler and more convenient structure, reducing the equipment use and maintenance costs, not requiring the switching of two sets of mechanisms, and avoiding the situation where the nut tilts and shifts during the switching process, resulting in inability to assemble, and the assembly yield rate is higher.

[0067] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0068] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A magnetic suction head, characterized in that: The invention comprises a lock tube (91) driven to rotate by a motor, a partition is arranged in the middle of the inner cavity of the lock tube (91), and the inner cavity of the lock tube (91) is divided into an upper cavity and a lower cavity, and the lower cavity of the lock tube (91) is arranged to be a polygonal structure adapted to a nut, a limit block (92) is movably arranged in the upper cavity, a guide rod (93) is fixedly connected to the bottom of the limit block (92), and the guide rod (93) can movably pass through the partition and extend into the lower cavity, a magnet (94) is arranged at the lower end of the guide rod (93), and a spring (95) is arranged between the top of the magnet (94) and the partition.

2. A magnetic automatic screw locking machine, characterized in that: It comprises the magnetic suction head as claimed in claim 1, and also comprises a frame (1), wherein a feeding conveyor belt (2) for conveying backwards is arranged at the front of the top of the frame (1), a feeding plate (3) is arranged above the feeding conveyor belt (2), and a plurality of guide grooves (31) are opened backwards at the front end of the feeding plate (3), and bolts are arranged in the guide grooves (31) and move backwards; A vibrating material feeding tray (4) for holding nuts is disposed at the rear end of the top of the frame (1), and a material receiving mechanism (5) capable of moving forward and backward is disposed on the frame (1) and below the front end of the vibrating material feeding tray (4); A gantry (6) is arranged on the frame (1) above the rear end of the feed conveyor belt (2), a movable plate (7) is arranged on the gantry (6) in a liftable manner, a plurality of servo motors (10) corresponding to the positions of the material guide grooves (31) are arranged on the movable plate (7) at intervals, and a magnetic suction head is fixedly mounted on the output shaft of each servo motor (10), and the magnetic suction head absorbs the nut from the material receiving mechanism (5) and is driven by the servo motor (10) to be screwed onto the bolt; The frame (1) is provided with a clamping assembly (8) for clamping bolts and performing material unloading.

3. The magnetic automatic screw locking machine according to claim 2 is characterized in that: A straightening plate (32) is provided on the feed plate (3), and a feed opening is provided at a position of the straightening plate (32) corresponding to each of the guide grooves (31).

4. The magnetic automatic screw locking machine according to claim 2, characterized in that: The front side of the vibrating material feeding tray (4) is provided with a plurality of discharge ports which are opposite to the material guiding grooves (31) one by one, and each discharge port is connected to a discharge guiding groove (41).

5. The magnetic automatic screw locking machine according to claim 4, characterized in that: The material receiving mechanism (5) comprises a bracket (51), a material dropping plate (52) and a first cylinder (53); the bracket (51) is fixedly mounted on the frame (1) and is located at the bottom of the vibrating material feeding plate (4); the material dropping plate (52) is fixedly mounted on the bracket (51) and is below the front end of the material discharging guide groove (41); a material dropping hole (54) is provided on the material dropping plate (52) at a position corresponding to each of the material discharging guide grooves (41); and a first cylinder (53) is provided on the bracket (51). A material moving plate (55) is arranged below the blanking plate (52) and can move forward and backward. The first cylinder (53) is arranged on the bracket (51) and the output end is fixedly connected to the material moving plate (55). A material receiving hole (56) is provided on the material moving plate (55) at a position corresponding to the blanking hole (54). A material lifting cylinder (57) is arranged below the material moving plate (55). The output end of the material lifting cylinder (57) is located in the inner cavity of the material receiving hole (56) and is used to lift the nut.

6. The magnetic automatic screw locking machine according to claim 2, characterized in that: The clamping assembly (8) comprises a mounting plate (81), the mounting plate (81) being movably arranged on the frame (1) and being located at the rear of the feed conveyor belt (2), the mounting plate (81) being vertically arranged with a third cylinder (83), the output end of the third cylinder (83) being arranged with a support plate (84), and a pneumatic clamping claw (85) being arranged at a position corresponding to each material guide groove (31) on the support plate (84).

7. The magnetic automatic screw locking machine according to claim 6, characterized in that: A feeding port (11) is provided on the frame (1) at the rear end of the feed conveyor belt (2); the clamping assembly (8) is located above the feeding port (11) when at the rear end; and a feeding conveyor belt (12) is provided at the bottom of the frame (1) at a position corresponding to the feeding port (11).

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