Automatic tightening device for fastener

Abstract

The utility model relates to the technical field of fasteners, and discloses an automatic fastening device for fasteners, which comprises a fixed box, ejection plates, high-density springs and screws, a plurality of groups of high-density springs are mounted in the fixed box, the ejection plates are inserted on the high-density springs, magnets are mounted at the front ends of the ejection plates, the magnets are magnetically matched with the screws, and the screws are inserted into the ejection plates. A buffer pad is installed at the attaching position of the front end of the ejection plate and the front end in the fixing box, a movable special-shaped rod is installed in the tail end of the outer side of the fixing box, one end of the movable special-shaped rod is separated from making contact with a clamping groove to eject a screw at a high speed to fasten a structure needing to be fixed, and the buffer pad is installed at the front end of the fixing box. And when the ejection plate is elastically ejected to the front end in the fixed box through the high-density spring, due to high-speed ejection, the buffer pad plays a role in buffering, and the situation that the service life is shortened due to high-density friction generated between the ejection plate and the interior of the fixed box is avoided.

Description

Technical Field

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

[0002] Fasteners are mechanical elements used to connect and fix objects. They are widely used in various engineering and construction applications. They are usually used to connect two or more components together to ensure their structural stability and reliability. The automatic fastener tightening device is a device used to automate the fastening process. It is usually used in factories or production lines to improve the efficiency and accuracy of fastener installation. The device can automatically tighten fasteners such as bolts, screws, and nuts to a predetermined torque value. It is widely used in automobile manufacturing, mechanical assembly, electronic products and other fields.

[0003] The utility model adopts the elasticity of high-density spring for fixation, adds a buffer pad to reduce the damage caused by friction, and has the characteristics of simple operation, stable performance, high accuracy and easy portability. For this reason, we propose an automatic tightening device for fasteners. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the utility model provides an automatic tightening device for fasteners, which solves the above-mentioned problems.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic tightening device for fasteners, comprising a fixing box, an ejection plate, a high-density spring and a screw, wherein multiple groups of high-density springs are installed inside the fixing box, an ejection plate is plugged into the high-density spring, a magnet is installed on the front end of the ejection plate, a screw is magnetically matched with the magnet, a buffer pad is installed at the joint between the front end of the ejection plate and the front end of the inside of the fixing box, a movable special-shaped rod is installed inside the outer end of the fixing box, and a cylindrical and hollow screw inlet and outlet are integrally formed on the front end face of the fixing box.

[0008] Preferably, the interior of the fixed box is a hollow structure, and a plurality of groups of cylindrical spring matching rods 1 are provided on the end of the hollow structure, and a plurality of groups of cylindrical spring matching rods 2 are provided on the back surface of the ejection plate, and the two ends of the high-density spring are respectively connected to the spring matching rod 1 and the spring matching rod 2.

[0009] Preferably, rectangular sliding grooves are provided on both ends of the fixed box, and rectangular sliding blocks are integrally formed at both ends of the ejection plate. The sliding blocks are slidably connected to the corresponding sliding groove positions. A hexagonal mounting groove is provided on the front end surface of the ejection plate, and a magnet is fixed on the mounting groove by solidifying glue, and the magnet is magnetically matched with the screw.

[0010] Preferably, a circular mating hole is provided on the end of the fixed box, a rectangular rotation mating groove is provided on the outside of the mating hole, rotation holes are provided at both ends of the right side of the rotation mating groove, and a rotating rod is integrally formed on the movable special-shaped rod, and the two ends of the rotating rod are rotatably connected to the corresponding rotating holes.

[0011] Preferably, a cylindrical block is integrally formed on the back of the ejection plate, and a semicircular clamping groove is provided on the cylindrical surface of the cylindrical block. One end of the movable special-shaped rod cooperates with the clamping groove to complete the clamping and ejection of the movable special-shaped rod.

[0012] Preferably, an arc-shaped sliding groove is provided on the right side of the rotating matching groove at the end of the fixed box, and a cylindrical push rod is integrally formed on the other end of the movable special-shaped rod, and the push rod slides in correspondence with the arc-shaped sliding groove.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the present invention provides an automatic fastener tightening device with the following beneficial effects:

[0015] 1. The automatic tightening device for fasteners has multiple spring matching rods 1 on the inner end of the fixed box, the ejection plate is installed inside the fixed box, and multiple spring matching rods 2 are provided on the back of the ejection plate. The two ends of the high-density spring are respectively sleeved on the spring matching rod 1 and the spring matching rod 2, and the sliding blocks at both ends of the ejection plate slide and cooperate with the sliding grooves at both ends of the fixed box.

[0016] 2. The fastener automatic tightening device has a movable special-shaped rod installed inside the rotating matching groove. The sliding groove uses the elasticity of the high-density spring to pull the clamping groove to the rotating matching groove position. One end of the movable special-shaped rod clamps the clamping groove. A magnet is fixedly installed inside the front of the ejection plate. The magnet and the screw are magnetically matched to prevent the screw from falling off during use.

[0017] 3. The automatic tightening device of the fastener rotates the push rod at the other end of the movable special-shaped rod to separate the contact between one end of the movable special-shaped rod and the clamping groove, and the screw is ejected at high speed to tighten the structure to be fixed. A buffer pad is installed at the front end of the fixing box. When the ejection plate is elastically ejected to the front end of the inside of the fixing box by the high-density spring, the buffer pad plays a buffering role due to the high-speed ejection, thereby avoiding high-density friction between the ejection plate and the inside of the fixing box, which reduces the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the end of the structure of the utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the structure of the utility model;

[0021] Figure 4 This is a schematic cross-sectional view of the fixing box structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the ejection plate structure of the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the movable special-shaped rod of the utility model.

[0024] In the figure: 1. Fixed box; 2. Ejection plate; 3. High-density spring; 4. Screw; 5. Buffer pad; 6. Magnet; 7. Movable special-shaped rod; 8. Spring matching rod 1; 9. Slide groove; 10. Screw inlet and outlet; 11. Rotation matching groove; 12. Spring matching rod 2; 13. Sliding block; 14. Cylindrical block; 15. Snap-in groove; 16. Push rod; 17. Rotation rod; 18. Arc slide groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-6 A fastener automatic tightening device includes a fixing box 1, an ejection plate 2, a high-density spring 3 and a screw 4. Multiple groups of high-density springs 3 are installed inside the fixing box 1, and the ejection plate 2 is plugged into the high-density spring 3. A magnet 6 is installed on the front end of the ejection plate 2, and the screw 4 is magnetically matched with the magnet 6. A buffer pad 5 is installed at the joint between the front end of the ejection plate 2 and the front end of the inside of the fixing box 1. A movable special-shaped rod 7 is installed inside the outer end of the fixing box 1, and a cylindrical and hollow screw inlet and outlet 10 is integrally formed on the front end surface of the fixing box 1.

[0027] Furthermore, the interior of the fixed box 1 is a hollow structure, and a plurality of groups of cylindrical spring matching rods 8 are provided on the end of the hollow structure, and a plurality of groups of cylindrical spring matching rods 12 are provided on the back surface of the ejection plate 2. The two ends of the high-density spring 3 are respectively connected to the spring matching rod 8 and the spring matching rod 12.

[0028] Furthermore, rectangular slide grooves 9 are provided on both ends of the fixed box 1, and rectangular sliding blocks 13 are integrally formed at both ends of the ejection plate 2. The sliding blocks 13 are slidably connected to the positions of the slide grooves 9. A hexagonal mounting groove is provided on the front end surface of the ejection plate 2, and a magnet 6 is fixed on the mounting groove by solidifying glue, and the magnet 6 is magnetically matched with the screw 4.

[0029] Furthermore, a matching hole in the form of a circular ring is provided on the end of the fixed box 1, a rectangular rotation matching groove 11 is provided on the outside of the matching hole, and rotation holes are provided at both ends of the right side of the rotation matching groove 11. A rotation rod 17 is integrally formed on the movable special-shaped rod 7, and the two ends of the rotation rod 17 are rotatably connected to the corresponding rotation holes.

[0030] Furthermore, a cylindrical block 14 is integrally formed on the back of the ejection plate 2, and a semicircular clamping groove 15 is opened on the cylindrical surface of the cylindrical block 14. One end of the movable special-shaped rod 7 cooperates with the clamping groove 15 to complete the clamping and ejection of the movable special-shaped rod 7.

[0031] Furthermore, an arc-shaped sliding groove 18 is provided on the right side of the rotating matching groove 11 at the end of the fixed box 1, and a cylindrical push rod 16 is integrally formed on the other end of the movable special-shaped rod 7, and the push rod 16 slides in correspondence with the arc-shaped sliding groove 18.

[0032] Working principle: There are multiple spring matching rods 8 on the inner end of the fixed box 1, the ejection plate 2 is installed inside the fixed box 1, and multiple spring matching rods 12 are provided on the back of the ejection plate 2. The two ends of the high-density spring 3 are respectively sleeved on the spring matching rod 8 and the spring matching rod 12. The sliding blocks 13 at both ends of the ejection plate 2 slide with the slide grooves 9 at both ends of the fixed box 1. The movable special-shaped rod 7 is installed inside the rotating matching groove 11. The sliding slide groove 9 uses the elasticity of the high-density spring 3 to pull the clamping groove 15 to the position of the rotating matching groove 11. One end of the movable special-shaped rod 7 clamps the clamping groove 15, and the ejection A magnet 6 is fixedly installed inside the front of the plate 2. The magnet 6 and the screw 4 magnetically cooperate to prevent the screw 4 from falling off during use. The push rod 16 at the other end of the movable special-shaped rod 7 is rotated to separate the contact between one end of the movable special-shaped rod 7 and the clamping groove 15, and the screw 4 is ejected at a high speed to tighten the structure to be fixed. A buffer pad 5 is installed at the front end of the fixed box 1. When the ejection plate 2 is elastically ejected to the front end of the fixed box 1 by the high-density spring 3, due to the high-speed ejection, the buffer pad 5 plays a buffering role to avoid high-density friction between the ejection plate 2 and the inside of the fixed box 1, which reduces the service life.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fastener automatic tightening device, comprising a fixing box (1), an ejection plate (2), a high-density spring (3) and a screw (4), characterized in that: The fixing box (1) is provided with a plurality of groups of high-density springs (3), a ejection plate (2) is plugged into the high-density springs (3), a magnet (6) is provided on the front end of the ejection plate (2), a screw (4) is magnetically matched with the magnet (6), a buffer pad (5) is provided at the joint between the front end of the ejection plate (2) and the front end of the fixing box (1), a movable special-shaped rod (7) is provided at the outer end of the fixing box (1), and a cylindrical and hollow screw inlet and outlet (10) is integrally formed on the front end surface of the fixing box (1).

2. The automatic fastener tightening device according to claim 1, characterized in that: The interior of the fixed box (1) is a hollow structure, and a plurality of groups of cylindrical spring matching rods (8) are provided on the end of the hollow structure. A plurality of groups of cylindrical spring matching rods (12) are provided on the back surface of the ejection plate (2), and the two ends of the high-density spring (3) are respectively connected to the spring matching rod (8) and the spring matching rod (12).

3. The automatic fastener tightening device according to claim 2, characterized in that: The two ends of the fixed box (1) are provided with rectangular sliding grooves (9), and the two ends of the ejection plate (2) are integrally formed with sliding blocks (13) in the form of rectangular blocks. The sliding blocks (13) are slidably connected to the positions of the sliding grooves (9). The front end surface of the ejection plate (2) is provided with a hexagonal mounting groove, and a magnet (6) is fixed to the mounting groove by solidifying glue. The magnet (6) and the screw (4) are magnetically matched.

4. The automatic fastener tightening device according to claim 3, characterized in that: A matching hole in the shape of a circular ring is provided on the end of the fixed box (1), a rectangular rotation matching groove (11) is provided on the outside of the matching hole, and rotation holes are provided at both ends of the right side of the rotation matching groove (11). A rotation rod (17) is integrally formed on the movable special-shaped rod (7), and the two ends of the rotation rod (17) are rotationally connected to the corresponding rotation holes.

5. The automatic fastener tightening device according to claim 4, characterized in that: A cylindrical block (14) is integrally formed on the back of the ejection plate (2), and a semicircular arc-shaped clamping groove (15) is provided on the cylindrical surface of the cylindrical block (14). One end of the movable special-shaped rod (7) cooperates with the clamping groove (15) to complete the clamping and ejection of the movable special-shaped rod (7).

6. The automatic fastener tightening device according to claim 5, characterized in that: An arc-shaped sliding groove (18) is provided on the right side of the rotating matching groove (11) at the end of the fixed box (1), and a cylindrical push rod (16) is integrally formed on the other end of the movable special-shaped rod (7), and the push rod (16) is slidably matched with the arc-shaped sliding groove (18).

Images