Automatic nut tightening device

Abstract

The utility model discloses an automatic nut tightening device which comprises a base, a support is arranged on the base, an inclined material disc is movably arranged on the support and connected with a vibration mechanism, a conical discharging hopper is arranged at the inclined low end of the material disc and connected with a nut sliding way, and a limiting mechanism is arranged on the nut sliding way. Assembling holes are formed in the inner side and the outer side of the bottom of the nut sliding way, an electric screwdriver is arranged on the base, and a nut sleeve on the electric screwdriver is in butt joint with the assembling hole in the inner side; according to the scheme, through the vibration mechanism, a plurality of nuts in the material disc can automatically slide into the nut sliding way through the conical discharging hopper to be arranged in order, then through the limiting mechanism, the nuts in the nut sliding way fall to the bottom of the nut sliding way one by one, and the single nut falls into the designated position according to the requirement; and the nut and the external bolt are automatically tightened through the nut sleeve on the electric screwdriver, so that the working efficiency is improved, the labor cost is reduced, and meanwhile, the tightening torque of the nut is effectively controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of nut assembly, in particular to an automatic nut tightening device. Background Art

[0002] At present, the tightening of bolts and nuts is mainly achieved by wrenches, and the main way to feed nuts is manual feeding, and the tightening of nuts is mainly achieved by wrenches; since the manual feeding cycle is slow, which affects the assembly efficiency, the use of ordinary wrenches is not only inefficient and labor-intensive, but also has the defect of being difficult to tighten or loosen bolts or nuts, and it is impossible to control the tightening torque of the nut.

[0003] With the continuous development of society, automated production is becoming more and more common, and there is an urgent need for a fully automatic nut tightening mechanism to improve work efficiency and reduce labor costs. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides an automatic nut tightening device, which solves the problems of low efficiency and difficulty in controlling the tightening torque when manually assembling nuts.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An automatic nut tightening device is provided, which includes a base, a bracket is arranged on the base, an inclined material tray is movably arranged on the bracket, and the material tray is connected to a vibration mechanism, a conical lower hopper is arranged at the inclined lower end of the material tray, the conical lower hopper is connected to a nut slide, a limiting mechanism for controlling the falling of the nut is arranged on the nut slide, assembly holes are arranged on the inner and outer sides of the bottom of the nut slide, an electric screwdriver for tightening the nut is arranged on the base, and the nut sleeve on the electric screwdriver is docked with the inner assembly hole.

[0007] Furthermore, the bracket includes two groups of symmetrical support rods, a horizontal axis is arranged at the top of each group of support rods, two sets are arranged at the bottom of the material tray, and the two sets are movably mounted on the two horizontal axes respectively.

[0008] Furthermore, the vibration mechanism includes an electromagnet mechanism, which includes a magnet frame and a magnet core rod movably arranged on the magnet frame. The magnet core rod is arranged parallel to the horizontal axis. One end of the magnet core rod is connected to the material tray through an elastic bending part, and the port of the nut slide is provided with a block for limiting the conical lower hopper.

[0009] Furthermore, a clamping ring is arranged on the magnet core rod, and a return spring is sleeved on the magnet core rod located between the clamping ring and the magnet frame.

[0010] Furthermore, the width of the nut slideway is matched with the distance between two opposite side surfaces of the nut, and the radial dimension of the assembly hole is matched with the distance between two opposite corners of the nut.

[0011] Furthermore, a strip-shaped observation hole is provided in the extension direction of the outer side of the nut slideway, and the width of the strip-shaped observation hole is smaller than the distance between the two opposite side surfaces of the nut.

[0012] Furthermore, the limiting mechanism includes a horizontal telescopic cylinder, the telescopic end of the horizontal telescopic cylinder is connected to a movable plate, and a first limit block and a second limit block are respectively arranged at both ends of the movable plate, the first limit block and the second limit block are respectively located on the left and right sides of the nut slide, and the front ends of the first limit block and the second limit block are respectively inserted alternately in the nut slide under the drive of the horizontal telescopic cylinder, the height of the front end of the first limit block is smaller than the height of the front end of the second limit block, and the nut slide between the front ends of the first limit block and the second limit block forms a limiting space that can accommodate a nut.

[0013] Furthermore, the front ends of the first limiting block and the second limiting block are both provided with cone heads matched with the outer side surface of the nut.

[0014] The beneficial effects of the utility model are:

[0015] 1. This scheme can make the inclined material tray vibrate through the vibration mechanism, so that several nuts in the material tray can automatically slide into the nut slide through the conical lower hopper and be neatly arranged, and then the nuts in the nut slide can be made to fall to the bottom of the nut slide one by one through the limit mechanism, so that a single nut can fall into the specified position as required, and then the nut sleeve on the electric screwdriver can be used to move the nut at the specified position, and after tightening with the external bolt, the nut is pulled out from the assembly hole along with the bolt, and so on, the automatic tightening of nuts in batches can be realized to improve work efficiency, reduce labor costs, and effectively control the tightening torque of the nuts.

[0016] 2. The block of this scheme can limit the large left and right swing of the conical lower hopper and the material tray. When the electromagnet mechanism drives the magnetic core rod to reciprocate, the elastic bending part will bend and store energy, and the bending elastic force of the elastic bending part will drive the material tray to vibrate.

[0017] 3. This scheme can make the nuts fall one by one to the bottom of the nut slide through the cooperation of the first limit block, the second limit block and the horizontal telescopic cylinder, wherein when the cone head of the first limit block is inserted in the nut slide, the nut at the lower end of the nut slide is limited and blocked by the cone head of the first limit block; and when the horizontal telescopic cylinder drives the cone head of the first limit block to be withdrawn from the nut slide and the cone head of the second limit block is inserted in the nut slide, the nut at the lower end automatically slides to the bottom of the nut slide, while the other nuts above are limited and blocked by the cone head of the second limit block, and so on, the nuts can be dropped one by one, so that the nuts can be tightened one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a first structural schematic diagram of the automatic nut tightening device.

[0019] Figure 2 This is a second structural schematic diagram of the automatic nut tightening device.

[0020] Figure 3 It is a structural diagram of the coordination between the material tray and the vibration mechanism.

[0021] Figure 4 This is a schematic diagram of the internal structure of the automatic nut tightening device.

[0022] Among them, 1. base, 2. material tray, 3. conical lower hopper, 4. nut slide, 5. assembly hole, 6. electric screwdriver, 7. nut sleeve, 8. support rod, 9. horizontal axis, 10. kit, 11. magnet frame, 12. magnet core rod, 13. elastic bending part, 14. clamping block, 15. clamping ring, 16. reset spring, 17. strip observation hole, 18. horizontal telescopic cylinder, 19. moving plate, 20. first limit block, 21. second limit block. DETAILED DESCRIPTION

[0023] The specific implementation methods of the utility model are described below to facilitate technical personnel in this technical field to understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific implementation methods. For ordinary technical personnel in this technical field, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all utility model creations using the concept of the utility model are protected.

[0024] Example 1

[0025] like Figure 1 and Figure 2 As shown, the automatic nut tightening device of the present scheme includes a base 1, a bracket is arranged on the base 1, an inclined material tray 2 is movably arranged on the bracket, and the material tray 2 is connected to the vibration mechanism. Specifically, the bracket includes two groups of symmetrical support rods 8, and a horizontal axis 9 is arranged on the top of each group of support rods 8. Two sets 10 are arranged at the bottom of the material tray 2, and the two sets 10 are movably arranged on the two horizontal axes 9 respectively.

[0026] A conical lower hopper 3 is provided at the inclined lower end of the material tray 2, and the conical lower hopper 3 is connected to the nut slide 4. A limiting mechanism for controlling the falling of the nut is provided on the nut slide 4. Assembly holes 5 are provided on the inner and outer sides of the bottom of the nut slide 4. An electric screwdriver 6 for tightening the nut is provided on the base 1, and the nut sleeve 7 on the electric screwdriver 6 is connected to the inner assembly hole 5.

[0027] During the design, the width of the nut slide 4 is adapted to the distance between the two opposite side surfaces of the nut, and the radial dimension of the assembly hole 5 is adapted to the distance between the two opposite corners of the nut; a strip-shaped observation hole 17 is provided in the extension direction of the outer side of the nut slide 4, and the width of the strip-shaped observation hole 17 is smaller than the distance between the two opposite side surfaces of the nut, so as to facilitate the observation of the sliding of the nut in the nut slide 4.

[0028] This solution can vibrate the inclined material tray 2 through a vibration mechanism, so that a number of nuts in the material tray 2 can automatically slide through the conical lower hopper 3 into the nut slide 4 for neat arrangement, and then the nuts in the nut slide 4 can fall one by one to the bottom of the nut slide 4 through a limiting mechanism, so that a single nut can fall into a specified position as required.

[0029] When the nut at the designated position of the present invention is tightened with the external bolt, the external bolt first pushes the nut at the designated position into the nut sleeve 7, and then the nut is moved by the nut sleeve 7 on the electric screwdriver 6, and after being tightened with the external bolt, the nut is pulled out from the assembly hole 5 along with the bolt, and so on, thereby realizing automatic tightening of nuts in batches, so as to improve work efficiency, reduce labor costs, and effectively control the tightening torque of the nuts.

[0030] Example 2

[0031] like Figure 3 As shown, this embodiment provides a specific scheme of the vibration mechanism on the basis of Embodiment 1, wherein the vibration mechanism includes an electromagnet mechanism, the electromagnet mechanism includes a magnet frame 11 and a magnet core rod 12 movably arranged on the magnet frame 11, the magnet core rod 12 is arranged parallel to the horizontal axis 9, a retaining ring 15 is arranged on the magnet core rod 12, a reset spring 16 is sleeved on the magnet core rod 12 located between the retaining ring 15 and the magnet frame 11, one end of the magnet core rod 12 is connected to the material tray 2 through an elastic bending part 13, and a block 14 for limiting the conical lower hopper 3 is arranged at the port of the nut slide 4; the block 14 of this scheme can limit the conical lower hopper 3 and the material tray 2 from swinging left and right in a large range, and when the electromagnet mechanism drives the magnet core rod 12 to reciprocate, the elastic bending part 13 will bend and store energy, and the bending elastic force of the elastic bending part 13 will drive the material tray 2 to vibrate.

[0032] Example 3

[0033] like Figure 4As shown, this embodiment provides a specific scheme of the limiting mechanism on the basis of Embodiment 1, wherein the limiting mechanism includes a horizontal telescopic cylinder 18, the telescopic end of the horizontal telescopic cylinder 18 is connected to a movable plate 19, and the two ends of the movable plate 19 are respectively provided with a first limiting block 20 and a second limiting block 21, the first limiting block 20 and the second limiting block 21 are respectively located on the left and right sides of the nut slide 4, the front end of the first limiting block 20 and the front end of the second limiting block 21 are respectively provided with a cone head matching the outer side surface of the nut, and the cone heads of the first limiting block 20 and the second limiting block 21 are respectively inserted alternately in the nut slide 4 under the drive of the horizontal telescopic cylinder 18, the height of the front end of the first limiting block 20 is less than the height of the front end of the second limiting block 21, and the nut slide 4 located between the front ends of the first limiting block 20 and the second limiting block 21 forms a limiting space that can accommodate a nut.

[0034] This solution can make the nuts fall one by one to the bottom of the nut slide 4 through the cooperation of the first limit block 20, the second limit block 21 and the horizontal telescopic cylinder 18, wherein when the cone head of the first limit block 20 is inserted in the nut slide 4, the nut at the lower end of the nut slide 4 is limited and blocked by the cone head of the first limit block 20; and when the horizontal telescopic cylinder 18 drives the cone head of the first limit block 20 to be withdrawn from the nut slide 4, and the cone head of the second limit block 21 is inserted in the nut slide 4, the nut at the lower end automatically slides to the bottom of the nut slide 4, and the other nuts above are limited and blocked by the cone head of the second limit block 21, and so on, the nuts can be dropped one by one, so that the nuts can be tightened one by one.

Claims

1. A nut automatic tightening device, characterized in that: It includes a base, a bracket is provided on the base, an inclined material tray is movably provided on the bracket, and the material tray is connected to a vibration mechanism, a conical lower hopper is provided at the inclined lower end of the material tray, and the conical lower hopper is connected to a nut slide, and a limiting mechanism for controlling the falling of the nut is provided on the nut slide, assembly holes are provided on the inner and outer sides of the bottom of the nut slide, an electric screwdriver for tightening the nut is provided on the base, and the nut sleeve on the electric screwdriver is docked with the inner assembly hole.

2. The automatic nut tightening device according to claim 1, characterized in that: The bracket comprises two groups of symmetrical support rods, the top of each group of support rods is provided with a horizontal axis, and the bottom of the material tray is provided with two sets of sleeves, and the two sets of sleeves are movably sleeved on the two horizontal axes respectively.

3. The automatic nut tightening device according to claim 2, characterized in that: The vibration mechanism includes an electromagnet mechanism, which includes a magnet frame and a magnet core rod movably arranged on the magnet frame, the magnet core rod is arranged parallel to the horizontal axis, one end of the magnet core rod is connected to the material tray through an elastic bending part, and the port of the nut slide is provided with a block for limiting the conical lower hopper.

4. The automatic nut tightening device according to claim 3, characterized in that: A clamping ring is arranged on the magnet core rod, and a return spring is sleeved on the magnet core rod located between the clamping ring and the magnet frame.

5. The automatic nut tightening device according to claim 1, characterized in that: The width of the nut slideway is matched with the distance between the two opposite side surfaces of the nut, and the radial dimension of the assembly hole is matched with the distance between the two opposite corners of the nut.

6. The automatic nut tightening device according to claim 5, characterized in that: A strip-shaped observation hole is arranged in the extension direction of the outer side of the nut slideway, and the width of the strip-shaped observation hole is smaller than the distance between the two opposite side surfaces of the nut.

7. The automatic nut tightening device according to claim 5, characterized in that: The limiting mechanism includes a horizontal telescopic cylinder, the telescopic end of the horizontal telescopic cylinder is connected to a movable plate, and the two ends of the movable plate are respectively provided with a first limiting block and a second limiting block, the first limiting block and the second limiting block are respectively located on the left and right sides of the nut slide, and the front ends of the first limiting block and the second limiting block are respectively inserted alternately in the nut slide under the drive of the horizontal telescopic cylinder, the height of the front end of the first limiting block is smaller than the height of the front end of the second limiting block, and the nut slide between the front ends of the first limiting block and the second limiting block forms a limiting space that can accommodate a nut.

8. The automatic nut tightening device according to claim 7, characterized in that: The front ends of the first limiting block and the second limiting block are both provided with cone heads matched with the outer side surface of the nut.

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