Feeding mechanism of automatic screw locking equipment

Abstract

The invention discloses a feeding mechanism of automatic screw locking equipment, and relates to the technical field of automatic screw locking equipment.The feeding mechanism comprises a base, a screw containing box is arranged at the rear end of the upper portion of the base, a screw feeding mechanism is installed in the screw containing box and composed of two plate bodies, and a gap between the plate bodies forms a screw displacement groove; fixing blocks are arranged at the positions, located on the two sides of the screw feeding mechanism, of the screw containing box, feeding slopes are arranged on the rear sides of the upper ends of the fixing blocks, discharging slopes are arranged on the front sides of the upper ends of the fixing blocks, feeding blocks are installed on one sides of the fixing blocks, the upper ends of the feeding blocks are of an inclined structure, and the inclination angle is the same as that of the feeding slopes; and open grooves are formed in the two sides of the bottom of the screw containing box, a hydraulic lifting device is fixedly installed on the rear side of the upper end face of the base, and the problem that in the screw conveying process of a feeding mechanism, positioning is difficult due to screw distribution randomness, and the feeding efficiency is affected is solved.

Description

Technical Field

[0001] The invention relates to the technical field of automatic screw locking equipment, in particular to a feeding mechanism of automatic screw locking equipment. Background Art

[0002] Automatic screw locking equipment is an automatic application-specific device that uses an automated mechanism to replace manual work to complete the taking, placing, and tightening of screws. It is mainly composed of an automatic feeding mechanism and an automatic locking mechanism (as well as an automatic feeder and an automatic screwdriver). Among them, the feeding mechanism is the core part of the automatic screw machine, which is mainly responsible for the selection, arrangement, detection, material distribution, and transportation of screws. It is an important link to replace manual screw taking.

[0003] For example, the Chinese authorized patent "A feeding mechanism for screw locking equipment" with announcement number CN215509842U includes a frame, a conveying mechanism and two groups of supporting mechanisms. A spacing is set between the two groups of supporting mechanisms, and the conveying mechanism is arranged in the spacing. Multiple groups of transverse support rollers are rotatably installed on each group of supporting mechanisms, and the multiple groups of transverse support rollers are arranged at intervals from front to back; the conveying mechanism includes a longitudinal cylinder, a push plate and a limiting mechanism, the longitudinal cylinder is arranged parallel to the supporting mechanism, the rear end of the push plate is connected to the output shaft of the longitudinal cylinder, and the limiting mechanism is installed on the top of the front end of the push plate; when the limiting mechanism is in a normal state, the top of the limiting mechanism is arranged above the top surface of the transverse support roller; when the limiting mechanism is under pressure, the top of the limiting mechanism moves downward, so that the top of the limiting mechanism is arranged below the top surface of the transverse support roller.

[0004] Although the above-mentioned prior art can realize the feeding of screws, it is difficult to directly locate the screws to the feeding mechanism due to the random distribution of the screws during the feeding process. In addition, the screws are individually positioned manually or with other equipment, which not only increases the production cost but also reduces the feeding efficiency. Therefore, it does not meet the existing needs. In this regard, we propose a feeding mechanism for an automatic screw locking device. Summary of the invention

[0005] The object of the present invention is to provide a feeding mechanism for an automatic screw locking device to solve the problem in the above background technology that the feeding mechanism is difficult to locate during the screw feeding process due to the random distribution of the screws, which affects the feeding efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a feeding mechanism of an automatic screw locking device, comprising a base, a screw placement box is arranged at the rear end above the base, a nail feeding mechanism is installed inside the screw placement box, and the front end of the nail feeding mechanism extends to the outside through a reserved opening at the front end of the screw placement box, the nail feeding mechanism is composed of two plates, and the gap between the plates constitutes a screw displacement groove, the screw placement box is provided with fixed blocks on both sides of the nail feeding mechanism, and the bottom of the fixed block is welded and fixed to the screw placement box, a feeding inclined surface is arranged on the rear side of the upper end of the fixed block, and the feeding inclined surface on one side The low point is flush with the upper end surface of the nail feeding mechanism, and a feeding slope is provided on the front side of the upper end of the fixed block, and the high point on one side of the feeding slope is flush with the upper end surface of the nail feeding mechanism. A loading block is installed on one side of the fixed block, and the upper end of the loading block is an inclined structure, and the inclination angle is the same as the loading slope. Slots are provided on both sides of the bottom of the screw placement box, and the lower end of the loading block passes through the slot and is limited by the sliding of the screw placement box. A hydraulic lifting device is fixedly installed on the rear side of the upper end surface of the base, and the movable end of the hydraulic lifting device is fixed to the loading block, and the base and the screw placement box are fixed by welding through a support frame.

[0007] Preferably, a screw diameter adjustment mechanism is provided below the nail feeding mechanism, and an adjustment cavity is provided at the middle position inside the screw diameter adjustment mechanism, a double-threaded transmission rod is rotatably installed inside the adjustment cavity, sliding blocks are symmetrically installed on both sides of the outside of the double-threaded transmission rod, the inner screw hole of the sliding block is threadedly matched with the double-threaded transmission rod, and the side wall of the sliding block is limited by the sliding of the adjustment cavity, the upper ends of the two sliding blocks are respectively fixed to the bottom of the two plates of the nail feeding mechanism, and an adjusting wheel is rotatably installed on one side of the screw diameter adjustment mechanism, and the adjusting wheel is keyed to one end of the double-threaded transmission rod.

[0008] Preferably, limiting slide grooves are provided on both sides of the screw diameter adjustment mechanism, and limiting slide blocks are installed inside the limiting slide grooves, and the upper ends of the limiting slide blocks are fixed to the bottom of the nail feeding mechanism.

[0009] Preferably, a support plate is provided at the front end above the base, and the support plate is fixed to the base through a box body, direct vibration mechanisms are installed on both sides of the upper end surface of the support plate, a transmission shaft is rotatably installed inside the direct vibration mechanism, an eccentric wheel is fixedly installed at the middle position of the transmission shaft, and the eccentric wheel is located at the bottom of the nail feeding mechanism, a first motor is fixedly installed on one side of one of the direct vibration mechanisms, and the output shaft of the first motor is fixed to the transmission shaft through a coupling, and the two transmission shafts are connected by belt drive.

[0010] Preferably, the direct vibration mechanism is provided with return springs at the front and rear ends, the lower end of the return spring is fixed to the support plate, and the upper end of the support plate is fixed to the extension frames at the front and rear ends of the screw diameter adjustment mechanism.

[0011] Preferably, a nail separating mechanism is provided at the front end of the nail feeding mechanism, a guide groove is provided inside the nail separating mechanism, and the front end of the nail feeding mechanism extends to the inside of the guide groove, a discharge port is provided at the front end of the guide groove, and the discharge port is connected to the inside of the nail separating mechanism, and a movable partition is installed at the connection between the guide groove and the discharge port.

[0012] Preferably, a second motor is fixedly mounted on the upper end of the interior of the nail separation mechanism, a screw is fixedly mounted on the output shaft of the second motor, one end of the screw extends into the inner screw hole of the partition, and the partition and the nail separation mechanism are slidably limited.

[0013] Preferably, a nail feeding tube is installed at the front end of the bottom of the nail separating mechanism, and the nail feeding tube is connected with the feeding port, and a tightening mechanism connector is installed at the bottom of the nail feeding tube.

[0014] Preferably, a fan is fixedly mounted on the upper end of the nail separating mechanism, and an air outlet end of the fan is connected to the upper end of the feed opening.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention significantly improves the efficiency and accuracy of screw feeding by providing a screw placement box with automatic feeding. The staff only needs to pour the screws directly into the screw placement box without additional arrangement and sorting, which greatly saves time and manpower. The hydraulic lifting device built into the mechanism drives the loading block to move upward from the bottom of the placement box. During this process, the screws are automatically lifted up and guided to the direction of the fixed block due to the inclined structure of the loading block. When the loading block reaches the top, its inclined surface coincides with the loading inclined surface of the fixed block, and the screws roll smoothly to the screw displacement groove of the nail feeding mechanism under the action of gravity. This design cleverly utilizes the natural form of the screw, so that part of the screw rod is directly embedded in the displacement groove to complete the positioning, while the screws that cannot be embedded automatically fall back into the placement box through the unloading inclined surface during the subsequent direct vibration conveying process, waiting for the next loading. This cycle not only realizes the fast and automatic feeding of the screws, but also effectively avoids the high cost and low efficiency problems caused by manual positioning, ensures the continuity and accuracy of the feeding process, and greatly improves the overall production efficiency.

[0017] 2. The present invention is provided with a direct vibration nail feeding mechanism. After the first motor is started, the transmission shaft realizes the synchronous rotation of the front and rear eccentric wheels under the drive of the belt. The irregular shape of the eccentric wheel causes it to generate periodic impact force during rotation. This impact force is transmitted to the entire feeding platform through the bottom of the nail feeding mechanism, forming high-frequency vibration. Under the high-frequency vibration of the nail feeding mechanism, the screw located in the screw displacement groove begins to move under the action of the vibration force. At the same time, since the design of the screw displacement groove is guiding, the screw will move along the direction of the groove under the push of the vibration force. The movement of the screw in the screw displacement groove is also affected by the friction force and gravity. The force generated by the vibration overcomes the static friction force between the screw and the screw displacement groove, causing the screw to start moving. At the same time, the gravity ensures that the screw always remains in the screw displacement groove during the movement and will not jump out. With the continuous rotation of the eccentric wheel and the high-frequency vibration of the nail feeding mechanism, the screw continuously moves from one side to the other side in the screw displacement groove. This movement is continuous and stable, ensuring the smoothness and efficiency of the feeding process.

[0018] 3. The present invention is provided with a screw diameter adjustment mechanism. Before feeding screws of different diameters, the staff only needs to simply turn the adjustment wheel to accurately convert the rotary motion into linear motion through the efficient conversion of the double-threaded transmission rod. This mechanism drives the two plates to move toward or away from each other, thereby quickly and accurately adjusting the spacing of the screw displacement grooves to perfectly match the diameters of different screws. This design not only ensures the stable positioning of the screws during the feeding process, but also greatly improves the versatility and production efficiency of the nail feeding mechanism. It can adapt to a variety of screw specifications without changing the equipment, and realizes the efficiency and flexibility of the feeding operation.

[0019] 4. The present invention is provided with a nail separation mechanism. The screws enter the guide groove of the nail separation mechanism in an orderly manner through the nail feeding mechanism, and slide smoothly to the lower feed port with the help of the guiding effect of the inclined surface. When the screw locking device performs the tightening task, the partition accurately blocks the guide groove outlet, effectively preventing the screws from entering the nail feeding tube in advance, ensuring the smooth progress of the tightening operation. Once the tightening is completed, the second motor is immediately started. Through the precise thread matching between the screw and the screw hole in the partition, and the stable guidance of the partition by the inner cavity of the nail feeding mechanism, the partition is accurately pushed up, thereby opening the guide groove outlet, allowing a precise number of screws to smoothly enter the nail feeding tube through the lower feed port, and further enter the tightening mechanism connector, so as to achieve fast and accurate filling of the screws. Subsequently, the second motor reverses, and the partition accurately resets again, closing the guide groove outlet, making full preparations for the next nail feeding and tightening operation. This series of actions is coherent and efficient, which not only improves work efficiency, but also ensures the stability and reliability of screw feeding and filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall stereogram of the present invention;

[0021] Figure 2 It is a three-dimensional diagram of the screw placement box of the present invention;

[0022] Figure 3 It is a side view of the internal structure of the present invention;

[0023] Figure 4 It is an overall top view of the present invention;

[0024] Figure 5 It is a schematic diagram of the internal structure of the nail separation mechanism of the present invention;

[0025] Figure 6 It is a stereoscopic diagram of the screw diameter adjustment mechanism and the direct vibration mechanism of the present invention.

[0026] In the figure: 1. base; 2. screw placement box; 3. nail feeding mechanism; 4. fixing block; 5. loading slope; 6. unloading slope; 7. loading block; 8. screw displacement groove; 9. support frame; 10. hydraulic lifting device; 11. support plate; 12. screw diameter adjustment mechanism; 13. direct vibration mechanism; 14. nail separation mechanism; 15. fan; 16. nail feeding tube; 17. tightening mechanism connector; 18. reset spring; 19. eccentric wheel; 20. limit slide groove; 21. adjustment chamber; 22. double-threaded transmission rod; 23. adjustment wheel; 24. first motor; 25. transmission shaft; 26. belt; 27. guide groove; 28. unloading port; 29. ​​partition; 30. screw; 31. second motor; 32. sliding block; 33. limit slider. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] See also Figure 1-6, an embodiment of the present invention: a feeding mechanism of an automatic screw locking device, comprising a base 1, a screw placement box 2 is arranged at the rear end above the base 1, a nail feeding mechanism 3 is installed inside the screw placement box 2, and the front end of the nail feeding mechanism 3 extends to the outside through the reserved opening at the front end of the screw placement box 2, the nail feeding mechanism 3 is composed of two plates, and the gap between the plates constitutes a screw displacement groove 8, the screw placement box 2 is located on both sides of the nail feeding mechanism 3 and a fixing block 4 is arranged, and the bottom of the fixing block 4 is welded and fixed to the screw placement box 2, and the rear side of the upper end of the fixing block 4 is provided with a feeding inclined surface 5, and the feeding The low point on one side of the inclined surface 5 is flush with the upper end surface of the nail feeding mechanism 3, and a feeding inclined surface 6 is provided on the front side of the upper end of the fixed block 4, and the high point on one side of the feeding inclined surface 6 is flush with the upper end surface of the nail feeding mechanism 3. A loading block 7 is installed on one side of the fixed block 4. The upper end of the loading block 7 is an inclined structure, and the inclination angle is the same as that of the loading inclined surface 5. Slots are provided on both sides of the bottom of the screw placement box 2, and the lower end of the loading block 7 passes through the slot and is limited by the sliding of the screw placement box 2. A hydraulic lifting device 10 is fixedly installed on the rear side of the upper end surface of the base 1, and the movable end of the hydraulic lifting device 10 is fixed to the loading block 7.

[0029] The staff can directly pour the screws into the screw placement box 2 without arranging them. By turning on the hydraulic lifting device 10, the loading block 7 is driven to move upward from the bottom of the screw placement box 2. During the movement, the screws above the loading block 7 are lifted up. Since the upper end surface of the loading block 7 is an inclined structure, the screws are blocked by the fixed block 4 and move toward the fixed block. When the loading block 7 moves to the top position, its inclined surface is flush with the loading slope 5 of the fixed block 4. At this time, the screws roll toward the screw displacement slot 8 of the nail feeding mechanism 3 under the action of gravity. The screws entering the nail feeding mechanism 3 will appear in two forms. One is that the screw part is embedded in the screw displacement groove 8 to realize its own positioning. On the other hand, the screw part does not enter the screw displacement groove 8 and appears to be tilted and lying flat. With the direct vibration conveying of the nail feeding mechanism 3, the screws whose screw parts are embedded in the screw displacement groove 8 can be moved smoothly, while the screws that have not entered the screw displacement groove 8 fall back to the inside of the screw placement box 2 at the position of the unloading slope. With the vertical reciprocating movement of the loading block 7, the screws are continuously fed into the nail feeding mechanism 3 to achieve fast feeding.

[0030] See also Figure 1 , Figure 3 , Figure 4 and Figure 6A screw diameter adjustment mechanism 12 is provided below the nail feeding mechanism 3, and an adjustment cavity 21 is provided at the middle position inside the screw diameter adjustment mechanism 12, and a double-threaded transmission rod 22 is rotatably installed inside the adjustment cavity 21, and sliding blocks 32 are symmetrically installed on both sides of the outside of the double-threaded transmission rod 22, and the inner screw hole of the sliding block 32 is threadedly matched with the double-threaded transmission rod 22, and the side wall of the sliding block 32 is slidably limited with the adjusting cavity 21, and the upper ends of the two sliding blocks 32 are respectively fixed to the bottom of the two plate bodies of the nail feeding mechanism 3, and an adjusting wheel 23 is rotatably installed on one side of the screw diameter adjustment mechanism 12, and the adjusting wheel 23 is keyed to one end of the double-threaded transmission rod 22, and limiting slide grooves 20 are provided on both sides of the inside of the screw diameter adjustment mechanism 12, and a limiting slider 33 is installed inside the limiting slide groove 20, and the upper end of the limiting slider 33 is fixed to the bottom of the nail feeding mechanism 3.

[0031] Before feeding the screws, the spacing between the two plates in the nail feeding mechanism 3 can be adjusted according to the diameter of the screw rod. The staff drives the double-threaded transmission rod 22 to rotate by turning the adjusting wheel 23. Under the friction between its external thread and the screw hole in the sliding block 32, the rotational motion is converted into linear motion, thereby driving the two plates to move toward each other, thereby realizing the adjustment of the spacing between the screw displacement grooves 8, which not only ensures the stable positioning of the screws during the feeding process, but also greatly improves the versatility and production efficiency of the nail feeding mechanism, and can adapt to various screw specifications without changing equipment.

[0032] See also Figure 3 , Figure 4 and Figure 6 A support plate 11 is provided at the front end above the base 1, and the support plate 11 is fixed to the base 1 through a box body, and direct vibration mechanisms 13 are installed on both sides of the upper end surface of the support plate 11, and a transmission shaft 25 is rotatably installed inside the direct vibration mechanism 13, an eccentric wheel 19 is fixedly installed at the middle position of the transmission shaft 25, and the eccentric wheel 19 is located at the bottom of the nail feeding mechanism 3, a first motor 24 is fixedly installed on one side of one of the direct vibration mechanisms 13, and the output shaft of the first motor 24 is fixed to the transmission shaft 25 through a coupling, and the two transmission shafts 25 are connected by a belt 26 for transmission, and a return spring 18 is provided at the front and rear of the direct vibration mechanism 13, and the lower end of the return spring 18 is fixed to the support plate 11, and the upper end of the support plate 11 is fixed to the extension frame at the front and rear ends of the screw diameter adjustment mechanism 12.

[0033] Turn on the first motor 24, and the transmission shaft 25 realizes the synchronous rotation of the front and rear eccentric wheels 19 under the transmission of the belt 26. The irregular shape of the eccentric wheel 19 generates periodic impact force during rotation, and this impact force is transmitted to the entire feeding platform through the bottom of the nail feeding mechanism 3, forming high-frequency vibration. Under the high-frequency vibration of the nail feeding mechanism 3, the screw located in the screw displacement groove 8 begins to move under the action of the vibration force. At the same time, since the design of the screw displacement groove 8 is guiding, the screw will move along the direction of the groove under the push of the vibration force. The movement of the screw in the screw displacement groove 8 is also affected by the friction force and gravity. The force generated by the vibration overcomes the static friction force between the screw and the screw displacement groove 8, causing the screw to start moving. At the same time, the gravity ensures that the screw always remains in the screw displacement groove during the movement and will not jump out. With the continuous rotation of the eccentric wheel and the high-frequency vibration of the nail feeding mechanism, the screw continuously moves from one side to the other side in the screw displacement groove 8.

[0034] See also Figure 1 , Figure 3 and Figure 5 A nail separation mechanism 14 is provided at the front end of the nail feeding mechanism 3, a guide groove 27 is provided inside the nail separation mechanism 14, and the front end of the nail feeding mechanism 3 extends to the inside of the guide groove 27, a feeding port 28 is provided at the front end of the guide groove 27, and the feeding port 28 is connected to the inside of the nail separation mechanism 14, and a movable partition 29 is installed at the connection between the guide groove 27 and the feeding port 28, a second motor 31 is fixedly installed at the upper end of the inside of the nail separation mechanism 14, and a screw 30 is fixedly installed on the output shaft of the second motor 31, one end of the screw 30 extends to the inner screw hole of the partition 29, and the partition 29 and the nail separation mechanism 14 are slidably limited, a nail feeding tube 16 is installed at the front end of the bottom of the nail separation mechanism 14, and the nail feeding tube 16 is connected to the feeding port 28, and a tightening mechanism connector 17 is installed at the bottom of the nail feeding tube 16, and a fan 15 is fixedly installed on the upper end of the nail separation mechanism 14, and the air outlet end of the fan 15 is connected to the upper end of the feeding port 28.

[0035] The screws enter the guide groove 27 of the nail separation mechanism 14 in an orderly manner through the nail feeding mechanism, and slide smoothly to the lower feed port 28 with the help of the guiding effect of the inclined surface. When the screw locking device performs the tightening task, the partition 29 accurately blocks the exit of the guide groove, effectively preventing the screws from entering the nail feeding tube in advance, ensuring the smooth progress of the tightening operation. Once the tightening is completed, the second motor 31 is immediately started. Through the precise thread matching between the screw rod 30 and the screw hole in the partition 29, and the stable guidance of the partition 29 by the inner cavity of the nail separation mechanism 14, the partition 29 is accurately pushed up, thereby opening the exit of the guide groove 27, allowing an accurate number of screws to smoothly pass through the lower feed port 28 into the nail feeding tube 16, and further enter the tightening mechanism connector 17, so as to achieve fast and accurate filling of screws. Subsequently, the second motor reverses, and the partition is accurately reset again, closing the exit of the guide groove, making full preparations for the next nail feeding and tightening operation.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A feeding mechanism of an automatic screw locking device, comprising a base (1), characterized in that: A screw placement box (2) is arranged at the rear end above the base (1), a nail feeding mechanism (3) is installed inside the screw placement box (2), and the front end of the nail feeding mechanism (3) extends to the outside through a reserved opening at the front end of the screw placement box (2), the nail feeding mechanism (3) is composed of two plates, and the gap between the plates constitutes a screw displacement groove (8), the screw placement box (2) is provided with fixed blocks (4) on both sides of the nail feeding mechanism (3), and the bottom of the fixed block (4) is welded and fixed to the screw placement box (2), and a feeding inclined surface (5) is arranged on the rear side of the upper end of the fixed block (4), and the low point of one side of the feeding inclined surface (5) is aligned with the nail feeding mechanism (3). The upper end surface of the screw placement box (2) is flush with the upper end surface of the screw placement box (2); a material unloading slope (6) is provided on the front side of the upper end of the fixed block (4), and the high point on one side of the material unloading slope (6) is flush with the upper end surface of the nail feeding mechanism (3); a loading block (7) is installed on one side of the fixed block (4); the upper end of the loading block (7) is an inclined structure, and the inclination angle is the same as that of the loading slope (5); slots are provided on both sides of the bottom of the screw placement box (2); the lower end of the loading block (7) passes through the slot and is slidably limited with the screw placement box (2); a hydraulic lifting device (10) is fixedly installed on the rear side of the upper end surface of the base (1), and the movable end of the hydraulic lifting device (10) is fixed to the loading block (7).

2. The feeding mechanism of the automatic screw locking device according to claim 1 is characterized in that: A screw diameter adjustment mechanism (12) is arranged below the nail feeding mechanism (3), an adjustment cavity (21) is arranged at a middle position inside the screw diameter adjustment mechanism (12), a double-threaded transmission rod (22) is rotatably installed inside the adjustment cavity (21), sliding blocks (32) are symmetrically installed on both sides of the double-threaded transmission rod (22), the inner screw hole of the sliding block (32) is threadedly matched with the double-threaded transmission rod (22), and the side wall of the sliding block (32) is slidably limited with the adjustment cavity (21), the upper ends of the two sliding blocks (32) are respectively fixed to the bottom of the two plate bodies of the nail feeding mechanism (3), and an adjustment wheel (23) is rotatably installed on one side of the screw diameter adjustment mechanism (12), and the adjustment wheel (23) is key-connected to one end of the double-threaded transmission rod (22).

3. The feeding mechanism of the automatic screw locking device according to claim 2 is characterized in that: Limiting slide grooves (20) are arranged on both sides of the screw diameter adjustment mechanism (12), and a limiting slider (33) is installed inside the limiting slide groove (20), and the upper end of the limiting slider (33) is fixed to the bottom of the nail feeding mechanism (3).

4. The feeding mechanism of the automatic screw locking device according to claim 2 is characterized in that: A support plate (11) is provided at the front end above the base (1), and the support plate (11) is fixed to the base (1) through a box body, and direct vibration mechanisms (13) are installed on both sides of the upper end surface of the support plate (11), and a transmission shaft (25) is rotatably installed inside the direct vibration mechanism (13), an eccentric wheel (19) is fixedly installed at the middle position of the transmission shaft (25), and the eccentric wheel (19) is located at the bottom of the nail feeding mechanism (3), and a first motor (24) is fixedly installed on one side of one of the direct vibration mechanisms (13), and the output shaft of the first motor (24) and the transmission shaft (25) are fixed by a coupling, and the two transmission shafts (25) are connected by a belt (26).

5. The feeding mechanism of the automatic screw locking device according to claim 4 is characterized in that: The direct vibration mechanism (13) is provided with a return spring (18) at the front and rear ends, the lower end of the return spring (18) is fixed to the support plate (11), and the upper end of the support plate (11) is fixed to the extension frames at the front and rear ends of the screw diameter adjustment mechanism (12).

6. The feeding mechanism of the automatic screw locking device according to claim 1 is characterized in that: A nail separation mechanism (14) is arranged at the front end of the nail feeding mechanism (3), a guide groove (27) is arranged inside the nail separation mechanism (14), and the front end of the nail feeding mechanism (3) extends to the inside of the guide groove (27), a discharge port (28) is arranged at the front end of the guide groove (27), and the discharge port (28) is connected to the inside of the nail separation mechanism (14), and a movable partition plate (29) is installed at the connection between the guide groove (27) and the discharge port (28).

7. The feeding mechanism of the automatic screw locking device according to claim 6 is characterized in that: A second motor (31) is fixedly mounted on the upper end of the nail separation mechanism (14); a screw rod (30) is fixedly mounted on the output shaft of the second motor (31); one end of the screw rod (30) extends into the inner screw hole of the partition plate (29); and the partition plate (29) and the nail separation mechanism (14) are slidably limited.

8. The feeding mechanism of the automatic screw locking device according to claim 6 is characterized in that: A nail feeding tube (16) is installed at the front end of the bottom of the nail separation mechanism (14), and the nail feeding tube (16) is connected to the feeding port (28). A tightening mechanism connector (17) is installed at the bottom of the nail feeding tube (16).

9. The feeding mechanism of the automatic screw locking device according to claim 8, characterized in that: A fan (15) is fixedly mounted on the upper end of the nail separating mechanism (14), and an air outlet end of the fan (15) is communicated with the upper end of the material discharge port (28).

10. The feeding mechanism of the automatic screw locking device according to claim 1, characterized in that: The base (1) and the screw placement box (2) are fixed by welding via a support frame (9).

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