Automatic tightening mechanism

Abstract

The utility model relates to the technical field of assembly equipment, and provides an automatic tightening mechanism which comprises a motor air cylinder positioning block, a motor, a first air cylinder and an air cylinder positioning plate. A motor is started to drive an air cylinder to do push-pull reciprocating motion, the air cylinder acts on a push rod, the push rod is connected with a push rod connecting plate to drive a tightening sliding table bottom plate to move, and a servo tightening gun is connected with a tightening shaft mounting plate to be fixed to the tightening sliding table bottom plate; the air cylinder pushes the tightening sliding plate to move to a designated position along the X-axis of the installation direction of the sliding rail, the air cylinder drives the connecting plate to move, the air cylinder pushes the connecting plate to move to a designated position along the Y-axis of the installation direction of the guide rail, and after a workpiece needing to be fastened is moved to the designated position, the servo tightening gun drives the sleeve to rotate to conduct tightening action. And after tightening is completed, the tightening sliding plate returns to the original position, the air cylinder drives the tightening sliding plate to move to the next position or return to the original position, and the problem that a workpiece needing to be tightened cannot be effectively tightened conveniently is solved.

Description

Technical Field

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

[0002] Mechanical assembly refers to the connection of mechanical parts or components according to the technical requirements of the design, and the combination of mechanical parts or components into a machine. Mechanical assembly is an important part of machine manufacturing and repair, especially for mechanical repair, because the provision of assembly parts is beneficial to the situation during mechanical manufacturing, which makes the assembly work more special. The quality of assembly work plays a very important role in the efficiency of the machine, the duration of the repair, the labor and cost of the work.

[0003] The patent specification with announcement number CN111775111B discloses an automatic tightening device and automatic assembly and disassembly equipment of large-diameter non-standard threads, including a threaded tooling grasping unit, a threaded tooling automatic adjustment unit, an automatic tightening unit and an automatic tightening drive unit; the threaded tooling grasping unit includes a tooling V-support, a tooling clamping cylinder and a tooling clamping arm; the threaded tooling automatic adjustment unit is used to realize the three-dimensional position adjustment of the tooling V-support, and the tooling clamping arm is used to clamp the threaded tooling under the drive of the tooling clamping cylinder; the automatic tightening unit includes a tightening frame, a first tightening reducer, a first tightening servo motor, a rotating disk, a tightening finger and a tightening feed assembly; the output shaft of the first tightening servo motor is connected to the rotating disk through the first tightening reducer and the tightening feed assembly, and the tightening finger is arranged on the rotating disk to realize the clamping of the threaded tooling.

[0004] However, in the implementation of relevant technologies, it was found that the above technical solution has the following problems: most companies are still using semi-automatic tightening guns during the use of the above device. Semi-automatic tightening guns have low working efficiency and require manual cooperation. They are also prone to causing manual hand injuries during use. The torque of semi-automatic guns will change when used for a long time, and the screws are prone to loosening after being tightened and used for a period of time. Therefore, further improvement is needed. Utility Model Content

[0005] The utility model provides an automatic tightening mechanism, which solves the problem in the related art that it is inconvenient to effectively tighten the workpiece that needs to be tightened.

[0006] The technical solution of the utility model is as follows:

[0007] An automatic tightening mechanism comprises a motor cylinder positioning block, one side of which is fixedly connected to a motor and a first cylinder, the motor is located above the first cylinder, a cylinder positioning plate is fixedly connected to the lower side of one end of the first cylinder, and a push rod is arranged at the center position of one end of the first cylinder.

[0008] Preferably, one end of the push rod is connected with a push rod connecting plate, the lower end of the push rod connecting plate is connected with a tightening slide table bottom plate, the upper end of the tightening slide table bottom plate is fixedly connected with a slide rail, and the upper end of the slide rail is slidably connected with a slider.

[0009] Preferably, the upper end of the slider is fixedly connected with a tightening slide plate, the upper end of the tightening slide plate is slidably connected with the lower end of the connecting plate, and the upper end of the tightening slide plate is fixedly connected with a guide rail.

[0010] Preferably, buffer mounting brackets are fixedly connected to both sides of the upper end of the tightening slide plate, the buffer mounting brackets are located on both sides of the guide rail, and one side of the buffer mounting bracket is penetrated and connected with a buffer nut.

[0011] Preferably, the upper end of the tightening slide plate is slidably connected with a connecting plate, the lower end of the connecting plate is fixedly connected with the tightening slide table bottom plate, and the lower end of the connecting plate is slidably connected with the guide rail.

[0012] Preferably, the upper end of the connecting plate is fixedly connected with a tightening shaft mounting plate, a servo tightening gun is penetrated and assembled on one side of the tightening shaft mounting plate, one end of the servo tightening gun is connected with an elastic sleeve, and one end of the elastic sleeve is connected with a sleeve.

[0013] Preferably, a push rod connecting plate is connected to the outer surface of the tightening slide plate, and a cylinder mounting bracket is installed on one side of the tightening slide plate.

[0014] Preferably, a second cylinder is arranged on one side of the connecting plate, and the second cylinder penetrates through the upper end side inside of the cylinder mounting bracket.

[0015] The working principle and beneficial effects of the present utility model are as follows:

[0016] The utility model drives the first cylinder to do reciprocating push and pull motion through the start of the motor. The first cylinder acts on the push rod, and the connection between the push rod and the push rod connecting plate drives the tightening slide base plate to move. Since the servo tightening gun connecting the tightening shaft mounting plate is fixed on the tightening slide base plate, the first cylinder pushes the tightening slide plate to move along the installation direction X-axis of the slide rail to a specified position. The second cylinder drives the connecting plate to move, and the second cylinder pushes the connecting plate to move along the installation direction Y-axis of the guide rail to a specified position. After moving the workpiece to be fastened to the specified position, the servo tightening gun drives the sleeve to rotate for tightening. After tightening is completed, it returns to the original position, and then the first cylinder drives the tightening slide plate to move to the next position or return to the original position, so as to effectively fasten the workpiece to be fastened. Moreover, the sleeve is detachable and can be replaced with sleeves of different sizes, which is designed for workpieces of different sizes and models, effectively improving production efficiency, unifying the torque size, reducing labor intensity, reducing production costs, and having a simple structure, strong stability, and strong flexibility, and can be operated in cooperation with fully automatic equipment, solving the problem of inconveniently effectively fastening the workpiece to be fastened. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 It is a schematic diagram of the overall side structure of the present utility model.

[0020] In the figure: 1, motor; 2, first cylinder; 3, cylinder positioning plate; 4, tightening slide base plate; 5, slide rail; 6, tightening slide plate; 7, servo tightening gun; 8, second cylinder; 9, tightening shaft mounting plate; 10, connecting plate; 11, push rod; 12, motor cylinder positioning block; 13, guide rail; 14, buffer mounting bracket; 15, buffer nut; 16, push rod connecting plate; 17, slider; 18, sleeve; 19, elastic sleeve; 20, cylinder mounting bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of the present utility model.

[0022] Such as Figure 1 And Figure 2As shown in the figure, this embodiment proposes an automatic tightening mechanism, including a motor cylinder positioning block 12. One side of the motor cylinder positioning block 12 is fixedly connected to a motor 1 and a first cylinder 2. The motor 1 is located above the first cylinder 2. One end of the first cylinder 2 is fixedly connected to a cylinder positioning plate 3 at the lower side, and a push rod 11 is arranged at the central position of one end of the first cylinder 2.

[0023] Furthermore, one end of the push rod 11 is connected to a push rod connecting plate 16. The lower end of the push rod connecting plate 16 is connected to a tightening slide base plate 4. The upper end of the tightening slide base plate 4 is fixedly connected to a slide rail 5. The upper end of the slide rail 5 is slidably connected to a slider 17. The push rod connecting plate 16 is connected to a tightening slider 6 to drive the movement of the tightening slide plate 6 on the tightening slide plate base 4.

[0024] Furthermore, the upper end of the slider 17 is fixedly connected to a tightening slide plate 6. The upper end of the tightening slide plate 6 is slidably connected to the lower end of a connecting plate 10. The upper end of the tightening slide plate 6 is fixedly connected to a guide rail 13. A connecting plate 10 is installed on the slider 17 to cooperate with the guide rail 13.

[0025] Furthermore, buffer mounting brackets 14 are fixedly connected to both sides of the upper end of the tightening slide plate 6. The buffer mounting brackets 14 are located on both sides of the guide rail 13. One side of the buffer mounting bracket 14 is connected through a buffer nut 15. The upper end of the tightening slide plate 6 is slidably connected to a connecting plate 10. The lower end of the connecting plate 10 is fixedly connected to the tightening slide base plate 4. The lower end of the connecting plate 10 is slidably connected to the guide rail 13. The upper end of the connecting plate 10 is fixedly connected to a tightening shaft mounting plate 9. A servo tightening gun 7 is assembled through one side of the tightening shaft mounting plate 9. One end of the servo tightening gun 7 is connected to an elastic sleeve 19. One end of the elastic sleeve 19 is connected to a sleeve 18. The outer surface of the tightening slide plate 6 is connected to a push rod connecting plate 16. A cylinder mounting bracket 20 is installed on one side of the tightening slide plate 6. The servo tightening gun 7 is used to drive the elastic sleeve 19 to rotate and tighten. The sleeve 19 is detachable and can be replaced with sleeves 19 of different sizes, which are designed for workpieces of different sizes and models.

[0026] Furthermore, a second cylinder 8 is arranged on one side of the connecting plate 10. The second cylinder 8 passes through the upper side inside of the cylinder mounting bracket 20. The second cylinder 8 is assembled on the cylinder mounting bracket 20 and is in a plane with the connecting plate 10 to push the movement of the connecting plate 10. The second cylinder 8 can drive the connecting plate 10 to move.

[0027] The working principle and usage instructions of the present utility model are as follows: When it is necessary to fasten a workpiece, first, the staff places the workpiece to be fastened at the designated installation and fixation position, and then the master control computer issues an instruction to the automatic tightening mechanism. The automatic tightening mechanism starts to work. The motor 1 starts to drive the first cylinder 2 to perform reciprocating push and pull movements. The first cylinder 2 acts on the push rod 11. The connection between the push rod 11 and the push rod connecting plate 17 drives the tightening slide base plate 4 to move. Since the servo tightening gun 7 is connected to the tightening shaft mounting plate 9 and fixed on the tightening slide base plate 4, the first cylinder 2 pushes the tightening slide plate 6 to move along the installation direction X-axis of the slide rail 5 to the designated position. The second cylinder 8 drives the connecting plate 10 to move. The second cylinder 8 pushes the connecting plate 10 to move along the installation direction Y-axis of the guide rail 13 to the designated position. After moving the workpiece to be fastened to the designated position, the servo tightening gun 7 drives the sleeve 19 to rotate for tightening. After tightening is completed, it returns to the original position. Then, the first cylinder 2 drives the tightening slide plate 6 to move to the next position or return to the original position, so as to effectively fasten the workpiece to be fastened. Moreover, the sleeve 19 is detachable and can be replaced with sleeves 19 of different sizes, which are designed for workpieces of different sizes and models.

[0028] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An automatic tightening mechanism, comprising a motor cylinder positioning block (12), characterized in that: The motor (1) and the first cylinder (2) are fixedly connected to one side of the motor cylinder positioning block (12); the motor (1) is located above the first cylinder (2); a cylinder positioning plate (3) is fixedly connected to the lower side of one end of the first cylinder (2); a push rod (11) is arranged at the center position of one end of the first cylinder (2); one end of the push rod (11) is connected to a push rod connecting plate (16); the lower end of the push rod connecting plate (16) is connected to a tightening slide base plate (4); the upper end of the tightening slide base plate (4) is fixedly connected to a slide rail (5); the upper end of the slide rail (5) is slidably connected to a slider (17).

2. An automatic tightening mechanism according to claim 1, characterized in that: The upper end of the slider (17) is fixedly connected to a tightening slide plate (6), the upper end of the tightening slide plate (6) is slidably connected to the lower end of the connecting plate (10), and the upper end of the tightening slide plate (6) is fixedly connected to a guide rail (13).

3. An automatic tightening mechanism according to claim 2, characterized in that: Both sides of the upper end of the tightening slide plate (6) are fixedly connected with a buffer mounting bracket (14), the buffer mounting bracket (14) is located on both sides of the guide rail (13), and a buffer nut (15) is connected through one side of the buffer mounting bracket (14).

4. The automatic tightening mechanism according to claim 2, characterized in that: The upper end of the tightening slide plate (6) is slidably connected to a connecting plate (10), the lower end of the connecting plate (10) is fixedly connected to the tightening slide base plate (4), and the lower end of the connecting plate (10) is slidably connected to a guide rail (13).

5. The automatic tightening mechanism according to claim 1, characterized in that: The upper end of the connecting plate (10) is fixedly connected to a tightening shaft mounting plate (9), one side of the tightening shaft mounting plate (9) is penetrated and equipped with a servo tightening gun (7), one end of the servo tightening gun (7) is connected to an elastic sleeve (19), and one end of the elastic sleeve (19) is connected to a sleeve (18).

6. The automatic tightening mechanism according to claim 2, characterized in that: A push rod connecting plate (16) is connected to the outer surface of the tightening slide plate (6), and a cylinder mounting bracket (20) is installed on one side of the tightening slide plate (6).

7. An automatic tightening mechanism according to claim 4, characterized in that: A second cylinder (8) is provided on one side of the connecting plate (10), and the second cylinder (8) passes through the interior of one side of the upper end of the cylinder mounting bracket (20).

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