Nut storage and feeding device for automatic tightening

Abstract

The application discloses a nut storage and supply device for automatic tightening and belongs to the technical field of automatic equipment. The technical scheme comprises a storage unit, a feeding unit, a discharging unit and a receiving unit. The storage unit is located on a support b, the feeding unit is located on the storage unit, the discharging unit is located on the side of the storage unit, and the receiving unit is located below the discharging unit. The receiving unit is slidingly connected with a vertical plate, and the support b is fixed on the vertical plate. The application has the beneficial effects that the nuts are stored in the nut buffer, then the nuts are sent into the nut sleeve of the tightening shaft from the nut buffer at a time, the tightening shaft automatically takes the next nut after the tightening of one nut and then moves to the next position for tightening, the nut tightening can be automatically and continuously performed, the work efficiency is improved, and the work intensity is reduced.

Description

Technical Field

[0001] This invention relates to a nut storage and supply device for automatic tightening, belonging to the field of automation equipment technology. Background Technology

[0002] In the process of tightening nuts, it is common to manually screw the nut onto the screw a few turns before tightening it with a tightening shaft, or to manually put the nut into the nut sleeve at the front end of the tightening shaft before tightening it onto the screw. This results in high manual labor intensity and low production efficiency. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a nut storage and supply device for automatic tightening. This device stores nuts in a nut buffer and then feeds them one at a time into the nut sleeve of a tightening shaft. After one nut is tightened, the tightening shaft automatically removes the next nut and moves to the next position for tightening, enabling automatic and continuous nut tightening.

[0004] The technical solution of the present invention is: a nut storage and supply device for automatic tightening, comprising a storage unit, a feeding unit, a discharging unit and a receiving unit. The storage unit is located on a support b, the feeding unit is located on the storage unit, the discharging unit is located on the side of the storage unit, and the receiving unit is located below the discharging unit. The receiving unit is slidably connected to a vertical plate, and the support b is fixed on the vertical plate.

[0005] The storage unit includes a nut buffer slot that is slidably connected to the bracket b by a cylinder b.

[0006] The cylinder b is fixed to the bottom of the bracket b, and the output end of the cylinder b is connected to the nut buffer groove through the bracket c. The bottom of the nut buffer groove is slidably connected to the linear guide rail b on the bracket b through a slider.

[0007] The feeding unit includes a bracket d fixed on a support b. Both ends of the support d are connected to guide post mounting plates. Both ends of the guide post are connected to the guide post mounting plates. A sliding block is slidably connected to the guide post through a linear bearing. A connecting frame b is fixed at the bottom of the sliding block. The connecting frame b is provided with a rotating push block for unidirectionally pushing the nut in the nut buffer slot. The connecting frame b is provided with a limiting block to restrict the rotation stroke of the rotating push block. The sliding block is connected to a tension spring through a tension spring connecting rod. The other end of the tension spring is connected to a tension spring fixing rod fixed on the support b.

[0008] The rotating push block is rotatably connected to the connecting frame b via a pin. The bottom of the rotating push block is provided with a rotating drive surface and a pushing surface for pushing the nut forward.

[0009] The feeding unit includes a connecting frame a fixed at the end of the nut buffer groove, a guide rod cylinder fixed on the mounting plate c, the mounting plate c fixed on the connecting frame a, the output end of the guide rod cylinder connected to the nut supply block, the bottom end of the nut supply block is provided with limiting end faces on both sides, and hooks for temporarily receiving nuts are provided between the limiting end faces.

[0010] The receiving unit includes a nut sleeve located directly below the hook, the nut sleeve being located at the top of the tightening shaft, the tightening shaft being fixed on the bracket a, the bracket a being fixed on the mounting plate a, the mounting plate a being slidably connected to the linear guide rail a on the vertical plate, and a cylinder a being fixed on the vertical plate, the output end of the cylinder a being connected to the driving mounting plate a through the mounting plate b.

[0011] The beneficial effects of this invention are: by storing nuts in a nut buffer and then feeding nuts from the nut buffer into the nut sleeve of the tightening shaft in one go, the tightening shaft automatically removes the next nut after tightening one nut and moves to the next position to tighten it, so that nut tightening can be carried out automatically and continuously, improving work efficiency and reducing work intensity. Attached Figure Description

[0012] Figure 1 The three-dimensional representation of the present invention Figure 1 ; Figure 2 The three-dimensional representation of the present invention Figure 2 ; Figure 3 This is a side view of the present invention; Figure 4 This is a partial sectional view of the feeding unit; Figure 5 This is a partial view of the nut block. Figure 6 This is a diagram showing the state of the nut part entering the nut sleeve. Figure 7 This diagram shows the state of the nut block separating from the nut and the nut sleeve receiving the material.

[0013] The attached diagram is labeled as follows: 1. Vertical plate, 2. Linear guide rail a, 3. Mounting plate a, 4. Bracket a, 5. Tightening shaft, 6. Mounting plate b, 7. Cylinder a, 8. Bracket b, 9. Linear guide rail b, 10. Nut buffer slot, 11. Bracket c, 12. Cylinder b, 13. Connecting frame a, 14. Mounting plate c, 15. Guide rod cylinder, 16. Nut supply block, 16.1. Limiting end face, 16.2. Hook, 17. Bracket d, 18. Guide post mounting plate, 19. Guide post, 20. Sliding block, 21. Linear bearing, 22. Tension spring connecting rod, 23. Tension spring, 24. Tension spring fixing rod, 25. Connecting frame b, 26. Rotating push block, 26.1. Rotary driving surface, 26.2. Pushing surface, 27. Pin, 28. Nut sleeve, 29. Nut. Detailed Implementation

[0014] The following is in conjunction with the appendix Figure 1-7 The present invention will be further described as follows: A nut storage and supply device for automatic tightening includes a storage unit, a feeding unit, a unloading unit, and a receiving unit. The storage unit is located on a bracket b8, and nuts 29 are temporarily stored in the storage unit. The feeding unit is located on the storage unit and is used to push the nuts 29 in the storage unit to the unloading unit. The unloading unit is located on the side of the storage unit, and the receiving unit is located below the unloading unit. The unloading unit delivers the nuts 29 to the receiving unit. The receiving unit is slidably connected to a vertical plate 1, and the bracket b8 is fixed on the vertical plate 1. After receiving the nuts 29, the receiving unit tightens the nuts 29 to a designated position.

[0015] The storage unit includes a nut buffer slot 10 slidably connected to a bracket b8 via a cylinder b12. A plurality of nuts 29 are arranged in a single row in the nut buffer slot 10. The nuts 29 are hexagonal nuts, and the end faces of the front and rear hexagonal sides of the heads of adjacent hexagonal nuts contact the end faces of the hexagonal shapes of the adjacent nuts. That is, the phase of the hexagonal head of the nut 29 in the nut buffer slot 10 remains unchanged during movement, and the phase of the nut 29 is the same as the phase of the nut sleeve 28, thus allowing the nuts 29 to smoothly enter the nut sleeve 28 during subsequent feeding. The cylinder b12 is fixed to the bottom of the bracket b8, and the output end of the cylinder b12 is connected to the nut buffer slot 10 via a bracket c11. The bottom of the nut buffer slot 10 is slidably connected to a linear guide rail b9 on the bracket b8 via a slider. The cylinder b12 drives the nut buffer slot 10 to slide on the linear guide rail b9.

[0016] The feeding unit includes a bracket d17 fixed on a bracket b8. Both ends of the bracket d17 are connected to guide post mounting plates 18. Both ends of the guide post 19 are connected to the guide post mounting plates 18. A sliding block 20 is slidably connected to the guide post 19 via a linear bearing 21. A connecting frame b25 is fixed to the bottom of the sliding block 20. The connecting frame b25 has a rotating push block 26 for unidirectionally pushing the nut 29 in the nut buffer slot 10. "Unidirectional" refers to the direction of the feeding unit. The connecting frame b25 has a limiting block to restrict the rotational stroke of the rotating push block 26. The sliding block 20 is connected to a tension spring 23 via a tension spring connecting rod 22. The other end of the tension spring 23 is connected to a tension spring fixing rod 24 fixed on the bracket b8. The rotating push block 26 is rotatably connected to the connecting frame b25 via a pin 27. The bottom of the rotating push block 26 has a rotation driving surface 26.1 and a pushing surface 26.2 for pushing the nut 29 forward. The tension force generated by the tension spring 23 is transmitted to the rotating push block 26, which acts on the inner wall of the nut 29. Under normal conditions, the rotating push block 26 rotates to a vertical position under the action of gravity (e.g., Figure 4As shown, when the rotating push block 26 contacts and interacts with the nut 29, the nut 29 exerts a reverse force on the rotating push block 26 (i.e., a force that causes the rotating push block 26 to rotate clockwise). The rotating push block 26 is limited by the limiting block and cannot continue to rotate clockwise in the vertical state. The pushing surface 26.2 of the rotating push block 26 acts on the nut 29, applying a rightward pushing force to the nut 29. When the connecting frame b25 moves to the left, the rotating driving surface 26.1 of the rotating push block 26 contacts the nut 29. The nut 29 pushes the rotating push block 26 to rotate counterclockwise to avoid the nut 29, thereby preventing the rotating push block 26 from pushing the nut back and achieving the purpose of unidirectionally pushing the nut 29.

[0017] The feeding unit includes a connecting frame a13 fixed to the end of the nut buffer slot 10, a guide rod cylinder 15 fixed to a mounting plate c14, a mounting plate c14 fixed to the connecting frame a13, and an output end of the guide rod cylinder 15 connected to a nut supply block 16. The nut supply block 16 has limiting end faces 16.1 on both sides of its bottom end, and hooks 16.2 for temporarily receiving nuts 29 are provided between the limiting end faces 16.1. Figure 5 As shown), after the nut 29 is removed from the nut buffer slot 10, its top outer edge is directly hooked onto the hook 16.2. The receiving unit includes a nut sleeve 28 located directly below the hook 16.2, which is positioned opposite to it. The nut sleeve 28 is located at the top of the tightening shaft 5, which is fixed to the bracket a4. The bracket a4 is fixed to the mounting plate a3, which is slidably connected to the linear guide rail a2 on the vertical plate 1. A cylinder a7 is fixed on the vertical plate 1, and the output end of the cylinder a7 is connected to the driving mounting plate a3 via the mounting plate b6.

[0018] The working process of this invention is as follows: When the nut sleeve 28 is not receiving material, the nut block 16, under the action of the guide rod cylinder 15, blocks the path of the nut 29 at the end of the nut buffer groove 10, preventing the nut 29 from moving out of the nut buffer groove 10. The principle of the nut 29's movement in the nut buffer groove 10 has been described above and will not be repeated here. When the nut sleeve 28 receives the nut, the cylinder a7 drives the tightening shaft 5 and the nut sleeve 28 to move upward along the linear guide rail 2. The nut sleeve 28 moves to the nut buffer groove. At the bottom of the outlet end of the storage slot 10, directly below the nut block 16, the nut block 16 moves upward, making the hook 16.2 level with the top outer edge of the nut 29. The outermost nut of the nut buffer slot 10 leaves the nut buffer slot 10 under the push of the feeding unit, and the top outer edge of the nut 29 is hooked onto the hook 16.2. The side of the connecting frame a13 limits the nut 29 hooked onto the hook 16.2, stopping the nut 29 from moving and positioning it directly opposite the nut sleeve 28 below (e.g., Figure 3As shown), the guide rod cylinder 25 actuates, causing the nut supply block 16 and the nut 29 on it to move downwards. The limiting end face 16.2 at the bottom of the nut supply block 16 presses against the upper end face of the nut sleeve 28, stopping the nut supply block 16 from moving (as shown). Figure 6 As shown, since the hexagonal head of nut 29 is in phase with the hexagonal inner cavity of nut sleeve 28, nut 29 has entered nut sleeve 28. Nut sleeve 28 completes receiving the material. Cylinder b12 is activated, driving the storage unit, feeding unit and unloading unit to move to the left. Some nuts 29 that have entered nut sleeve 28 cannot move to the left, thus separating nuts 29 from the hook of nut supply block 16. Cylinder a7 is activated, driving tightening shaft 5 and nut sleeve 28 and nuts 29 on it to move down. The robot drives the workpiece to be tightened to move above nut sleeve 28. Cylinder a7 moves up, and nut sleeve 28, driven by tightening shaft 5, tightens the nuts 29 on it to the designated position. After tightening, nut sleeve 28 is retracted, the robot drives the workpiece away, and nut sleeve 28 enters the next receiving work cycle.

[0019] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A nut storage and supply device for automatic tightening, characterized in that, It includes a storage unit, a feeding unit, a unloading unit and a receiving unit. The storage unit is located on the support b (8), the feeding unit is located on the storage unit, the unloading unit is located on the side of the storage unit, and the receiving unit is located below the unloading unit. The receiving unit is slidably connected to the upright plate (1), and the support b (8) is fixed on the upright plate (1). The storage unit includes a nut buffer groove (10) that is slidably connected to the bracket b (8) by a cylinder b (12). The cylinder b (12) is fixed at the bottom of the bracket b (8). The output end of the cylinder b (12) is connected to the nut buffer groove (10) through the bracket c (11). The bottom of the nut buffer groove (10) is slidably connected to the linear guide rail b (9) on the bracket b (8) through the slider. The feeding unit includes a bracket d (17) fixed on a bracket b (8), with guide post mounting plates (18) connected to both ends of the bracket d (17), and guide posts (19) connected to both ends of the guide post mounting plates (18). A sliding block (20) is slidably connected to the guide post (19) via a linear bearing (21). A connecting frame b (25) is fixed at the bottom of the sliding block (20). A rotating push block (26) is provided on the connecting frame b (25) for unidirectionally pushing the nut (29) in the nut buffer groove (10) to move. A limiting block is provided on the connecting frame b (25) to limit the rotation stroke of the rotating push block (26). The sliding block (20) is connected to a tension spring (23) via a tension spring connecting rod (22). The other end of the tension spring (23) is connected to a tension spring fixing rod (24) fixed on the bracket b (8).

2. The nut storage and supply device for automatic tightening according to claim 1, characterized in that, The rotating push block (26) is rotatably connected to the connecting frame b (25) via a pin (27). The bottom of the rotating push block (26) is provided with a rotating drive surface (26.1) and a push surface (26.2) for pushing the nut (29) to move.

3. The nut storage and supply device for automatic tightening according to claim 1, characterized in that, The feeding unit includes a connecting frame a (13) fixed at the end of the nut buffer groove (10), a guide rod cylinder (15) fixed on the mounting plate c (14), the mounting plate c (14) fixed on the connecting frame a (13), the output end of the guide rod cylinder (15) is connected to the nut supply block (16), the bottom end of the nut supply block (16) is provided with limiting end faces (16.1) on both sides, and the limiting end faces (16.1) are provided with hooks (16.2) for temporarily receiving nuts (29) between them.

4. The nut storage and supply device for automatic tightening according to claim 3, characterized in that, The receiving unit includes a nut sleeve (28) located directly below the hook (16.2) which is positioned opposite to it. The nut sleeve (28) is located at the top of the tightening shaft (5). The tightening shaft (5) is fixed on the bracket a (4). The bracket a (4) is fixed on the mounting plate a (3). The mounting plate a (3) is slidably connected to the linear guide rail a (2) on the vertical plate (1). A cylinder a (7) is fixed on the vertical plate (1). The output end of the cylinder a (7) is connected to the driving mounting plate a (3) through the mounting plate b (6).

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