Screw locking mechanism with inner supporting and clamping mechanism

Abstract

The screw locking mechanism comprises a clamping bottom plate, a screw locking assembly and a clamping assembly are arranged on the clamping bottom plate, the clamping assembly comprises an inner supporting seat and an inner supporting opening formed in the center of the inner supporting seat, an inner supporting annular channel is formed in the side wall of the inner supporting opening, and the inner supporting annular channel is communicated with the clamping assembly. A plurality of inner supporting plates are slidably connected to the inner supporting ring way, rotating connecting blocks are fixedly connected between the inner supporting plates and the inner supporting ring way, balls slidably connected to the inner supporting ring way are rotatably connected to the rotating connecting blocks, and a clamping driving mechanism is arranged on one side of the inner supporting seat; the clamping driving mechanism comprises a plurality of clamping rods and a clamping motor driving the clamping rods to move, clamping openings matched with the clamping rods are formed in the inner supporting plate, a pneumatic telescopic rod is arranged at the bottom of the rotating connecting block, a positioning ring is fixedly connected to the outer wall of the opening of the inner supporting plate, and a positioning guide face is arranged on the surface of the positioning ring. And the clamping structure is arranged, so that the effect of internally supporting and fixing the workpiece is achieved.

Description

Technical Field

[0001] This utility model relates to the field of screw fastening mechanism technology, specifically to a screw fastening mechanism with an internal support clamping mechanism. Background Technology

[0002] Automatic screw fastening machines are also called automatic screw feeders, automatic screw tightening machines, automatic screw machines, automatic screw driving machines, automatic screw fastening systems, etc.

[0003] When using an automatic screw fastening machine, the workpiece is usually placed under the screwdriver bit, and the bit is aligned with the threaded hole on the workpiece surface. The automatic screw fastening machine can use pneumatics to blow the screw through a guide tube to the screwdriver bit, then use pneumatics to straighten the screw, and then use the guide rod at the front end of the electric screwdriver to connect the screw and the threaded hole, thus achieving a precise thread connection process.

[0004] When using an automatic screw fastening machine, some workpieces are hollow cylindrical structures. During the positioning process, due to the irregular curved surface of the workpiece, conventional clamping mechanisms cannot fix the workpiece well. Therefore, the workpiece is prone to slight displacement when the screw machine is fastening, which will cause the screw to deviate when it is driven into the threaded hole, resulting in an unstable threaded connection. Therefore, the existing screw fastening mechanism has the problem of not being able to fix hollow cylindrical parts firmly enough and is prone to errors. Utility Model Content

[0005] The purpose of this invention is to achieve the effect of internal support for cylindrical parts by setting up a clamping component, thereby increasing the clamping strength and improving the quality of the threaded connection when screws are fastened.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a screw fastening mechanism with an internal support clamping mechanism, comprising a clamping base plate, wherein a screw fastening assembly and a clamping assembly are respectively provided on the clamping base plate, the clamping assembly comprising an internal support seat and an internal support opening at the center of the internal support seat, an internal support annular channel is provided on the side wall of the internal support opening, a plurality of internal support plates are slidably connected on the internal support annular channel, a rotating connecting block is fixedly connected between the internal support plates and the internal support annular channel, a ball bearing is rotatably connected to the rotating connecting block and slidably connected on the internal support annular channel, a clamping drive mechanism is provided on one side of the internal support seat, the clamping drive mechanism comprises a plurality of clamping rods and a clamping motor for driving the plurality of clamping rods to move, a clamping port that cooperates with the plurality of clamping rods is provided on the internal support plate, a pneumatic telescopic rod is provided at the bottom of the rotating connecting block, a positioning ring is fixedly connected to the outer wall of the internal support opening, and a positioning guide surface is provided on the surface of the positioning ring.

[0007] Preferably, the clamping drive mechanism further includes a drive base slidably connected to the clamping base plate, a plurality of drive rails fixedly connected to the drive base, a drive rotating block fixedly connected to the piston rod end of the clamping motor, a slider slidably connected to the drive rails fixedly connected to the bottom of the clamping rod, and a curved slide rod slidably connected between the drive rotating block and the slider.

[0008] Preferably, the outer wall profile of the curved slide bar is curved.

[0009] Preferably, the inner support plate extends toward the screw fastening assembly, and the screw fastening assembly includes a plurality of electric screwdriver bits, the width between two electric screwdriver bits being greater than the width between two inner support plates.

[0010] Preferably, a magnetic rotating base is fixedly connected to the clamping base plate, a rotating cylinder is fixedly connected to the magnetic rotating base, an electromagnet is fixedly connected to the piston rod end of the rotating cylinder, and the electromagnet part extends into the inner support opening.

[0011] Preferably, a drive cylinder is fixedly connected to the clamping base plate, and the piston rod end of the drive cylinder is fixedly connected to the back of the drive base.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. A clamping assembly is provided, which can internally support the inner wall of the cylindrical workpiece. By applying a resisting force to the inner wall of the cylindrical workpiece, the workpiece is strengthened and its fixing firmness is improved, thereby enhancing the stability of the screw fastening mechanism during operation.

[0014] 2. A clamping drive mechanism is set up, which performs internal support through the linkage of the clamping motor. This can improve the effect of internal support, ensure the strength of internal support, achieve multi-point internal support effect in four directions at the same time, and can adapt to the internal support and fixation of cylindrical workpieces of different specifications. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the screw fastening mechanism with an internal support clamping mechanism according to the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of part of this utility model. Figure 1 ;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a schematic diagram of the structure of part of this utility model. Figure 2 ;

[0019] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0020] In the picture:

[0021] 1. Clamping base plate; 11. Drive cylinder;

[0022] 2. Screw fastening assembly; 21. Electric screwdriver bit;

[0023] 3. Clamping assembly; 31. Inner support base; 311. Inner support opening; 312. Inner support ring track; 313. Inner support plate; 314. Rotating connecting block; 316. Clamping port; 317. Pneumatic telescopic rod; 32. Clamping drive mechanism; 321. Clamping rod; 322. Clamping motor; 323. Drive base; 324. Drive track; 325. Drive rotating block; 326. Slider; 327. Curved slide bar; 33. Positioning ring; 331. Positioning guide surface;

[0024] 41. Rotate the cylinder; 42. Electromagnet. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0026] refer to Figure 1-5 A clamping base plate 1 is provided, on which a screw fastening assembly 2 and a clamping assembly 3 are respectively provided. The screw fastening assembly 2 can automatically tighten screws on the surface of the workpiece. The screws are blown in through the air tube on the surface and tightened by an electric screwdriver. The screw fastening assembly 2 also includes a pneumatic cylinder, which can realize the screw fastening of blowing and suction in one unit. After the screw is transported to the screwdriver bit, the position of the screw is corrected and aligned by pneumatic means, which increases the accuracy of screw fastening. The clamping assembly 3 can clamp and fix the workpiece. The hollow cylindrical workpiece is fixed by the clamping assembly 3.

[0027] refer to Figure 1-5The clamping assembly 3 includes an inner support base 31 and an inner support opening 311 at the center of the inner support base 31. A cylindrical workpiece is fixed inside the inner support opening 311. An inner support ring channel 312 is provided on the side wall of the inner support opening 311. Several inner support plates 313 are slidably connected to the inner support ring channel 312. A rotating connecting block 314 is fixedly connected between the inner support plates 313 and the inner support ring channel 312. A ball bearing that is slidably connected to the inner support ring channel 312 is rotatably connected to the rotating connecting block 314. The outer wall of the cylindrical workpiece abuts against the surface of the inner support plate 313, and can achieve circumferential rotation by the sliding of the ball bearing in the inner support ring channel 312 during rotation. The movement by the ball bearing and the inner support ring channel 312 ensures the stability during rotation. A pneumatic telescopic rod 317 is provided at the bottom of the rotating connecting block 314, which can be extended and adjusted to adapt to workpieces of different sizes.

[0028] refer to Figure 1-5 A clamping drive mechanism 32 is provided on one side of the inner support 31. The clamping drive mechanism 32 includes several clamping rods 321 and a clamping motor 322 that drives the clamping rods 321 to move. The inner support plate 313 has clamping ports 316 that cooperate with the clamping rods 321. By inserting the clamping rods 321 into the clamping ports 316, the pneumatic telescopic rods 317 are extended and retracted to achieve the inner support effect. The clamping drive mechanism 32 also includes a drive base 323 that is slidably connected to the clamping base plate 1. Several drive rails 324 are fixedly connected to the drive base 323. A drive rotating block 325 is fixedly connected to the piston rod end of the clamping motor 322. A slider 326 is fixedly connected to the bottom and slidably connected to the drive rail 324. A curved slide rod 327 with a curved outer wall profile is slidably connected between the drive rotating block 325 and the slider 326. When the drive rotating block 325 rotates clockwise under the drive of the clamping motor 322, it will drive the inner support plate 313 to move away from the center of the drive rotating block 325 along the direction of the drive rail 324, thereby adapting to larger cylindrical workpieces and providing internal support for the inner wall of the cylindrical workpiece. When the drive rotating block 325 moves counterclockwise, the inner support plate 313 moves towards the center of the drive rotating block 325 along the direction of the drive rail 324, thereby adapting to smaller cylindrical workpieces.

[0029] refer to Figure 1-5A drive cylinder 11 is fixedly connected to the clamping base plate 1. The piston rod end of the drive cylinder 11 is fixedly connected to the back of the drive base 323, thereby pushing the inner support 31 to move and driving the clamping rod 321 to insert into the clamping port 316 or move away from the clamping port 316, thereby realizing the function switching of inner support and release of inner support. The inner support plate 313 extends towards the screw fastening assembly 2. The screw fastening assembly 2 includes several electric screwdriver bits 21. The electric screwdriver bits can extend screws and drive them into the threaded opening of the cylindrical workpiece. The width between two electric screwdriver bits 21 is greater than the width between two inner support plates 313, ensuring that the inner support plate 313 will not affect the operation of the electric screwdriver bits 21 in driving the screws into the threaded opening of the workpiece during the inner support process.

[0030] refer to Figure 1-5 A positioning ring 33 is fixedly connected to the outer wall of the inner support opening 311. The positioning ring 33 has a positioning guide surface 331 on its surface. The positioning operation is performed before the cylindrical workpiece is fixed to achieve the positioning effect and ensure the accuracy of the installation position of the cylindrical workpiece.

[0031] refer to Figure 1-5 A magnetic rotating base is fixedly connected to the clamping base plate 1, and a rotating cylinder 41 is fixedly connected to the magnetic rotating base. An electromagnet 42 is fixedly connected to the piston rod end of the rotating cylinder 41. The electromagnet 42 extends into the inner support opening 311 and can attract the bottom part of the cavity of the cylindrical product through the electromagnet 42. Thus, the rotating cylinder 41 can rotate to drive the cylindrical workpiece to rotate and switch the threaded opening that needs to be screwed. When rotating, the ball rolls on the inner support ring 312 to ensure the stability of the rotation of the cylindrical workpiece.

[0032] The working principle of this mechanism is as follows: When performing the screw fastening process on a cylindrical workpiece, the product is placed into the inner support opening 311 through the positioning ring 33. The inner support plate 313 is adjusted so that it can be inserted into the cavity inside the cylindrical workpiece. The drive cylinder 11 is activated, and the piston rod of the drive cylinder 11 extends, causing the clamping rod 321 to be inserted into the clamping port 316. The clamping motor 322 is activated, which drives the drive rotating block 325 to rotate, and drives the inner support plate 313 to move and adjust along the length direction of the drive track 324, so that the side wall of the inner support plate 313 abuts against the inner wall of the cylindrical workpiece. The pneumatic telescopic rod 317 clamps the workpiece. Hold the workpiece in place, reverse the start of the drive cylinder 11, and the inner support plate 313 continuously abuts against the side wall of the cylindrical workpiece. At this time, the cylindrical product is internally supported and fixed under the abutment of the inner support plate 313. The screw is blown out by the electric screwdriver bit 21 of the screw fastening assembly 2 to drive the bolt into the threaded hole on the surface of the cylindrical workpiece. When there are other threaded holes on the cylindrical workpiece, the electromagnet 42 is activated. The electromagnet 42 abuts against the inner bottom wall of the cylindrical workpiece, and the rotating cylinder 41 is activated to rotate the cylindrical workpiece by 90°, so that the bolt holes in other positions can be driven into the electric screwdriver bit 21 to perform the screw driving operation. This completes the process of internally supporting and fixing the cylindrical workpiece and driving in the bolt.

[0033] The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be understood as being within the protection scope of the present invention.

Claims

1. A screw fastening mechanism with an internal support clamping mechanism, characterized in that: The system includes a clamping base plate (1), on which screw fastening components (2) and clamping components (3) are respectively provided. The clamping component (3) includes an inner support base (31) and an inner support opening (311) opened in the center of the inner support base (31). An inner support ring channel (312) is provided on the side wall of the inner support opening (311). Several inner support plates (313) are slidably connected to the inner support ring channel (312). A rotating connecting block (314) is fixedly connected between the inner support plates (313) and the inner support ring channel (312). A rotating connecting block (314) is rotatably connected to the inner support ring channel (311). 2) The ball is slidably connected to the inner support (31). A clamping drive mechanism (32) is provided on one side of the inner support (31). The clamping drive mechanism (32) includes several clamping rods (321) and a clamping motor (322) that drives the several clamping rods (321) to move. A clamping port (316) is opened on the inner support plate (313) to cooperate with the several clamping rods (321). A pneumatic telescopic rod (317) is provided at the bottom of the rotating connecting block (314). A positioning ring (33) is fixedly connected to the outer wall of the inner support opening (311). A positioning guide surface (331) is opened on the surface of the positioning ring (33).

2. The screw fastening mechanism with an internal support clamping mechanism according to claim 1, characterized in that: The clamping drive mechanism (32) further includes a drive base (323) slidably connected to the clamping base plate (1). Several drive rails (324) are fixedly connected to the drive base (323). A drive rotating block (325) is fixedly connected to the piston rod end of the clamping motor (322). A slider (326) slidably connected to the drive rails (324) is fixedly connected to the bottom of the clamping rod (321). A curved slide rod (327) is slidably connected between the drive rotating block (325) and the slider (326).

3. A screw fastening mechanism with an internal support clamping mechanism according to claim 2, characterized in that: The outer wall profile of the curved slide bar (327) is curved.

4. A screw fastening mechanism with an internal support clamping mechanism according to claim 1, characterized in that: The inner support plate (313) extends toward the screw fastening assembly (2), which includes a plurality of electric screwdriver bits (21), and the width between two electric screwdriver bits (21) is greater than the width between two inner support plates (313).

5. A screw fastening mechanism with an internal support clamping mechanism according to claim 1, characterized in that: A magnetic rotating base is fixedly connected to the clamping base plate (1), and a rotating cylinder (41) is fixedly connected to the magnetic rotating base. An electromagnet (42) is fixedly connected to the piston rod end of the rotating cylinder (41), and part of the electromagnet (42) extends into the inner support opening (311).

6. A screw fastening mechanism with an internal support clamping mechanism according to claim 2, characterized in that: A drive cylinder (11) is fixedly connected to the clamping base plate (1), and the piston rod end of the drive cylinder (11) is fixedly connected to the back of the drive base (323).

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