Locking force adjusting device of automatic screw locking machine

Abstract

The utility model relates to the technical field of automatic screw locking machines, in particular to a locking force adjusting device of an automatic screw locking machine, which comprises a motor, one end of the motor is provided with an output shaft, one end of the output shaft is fixedly connected with a turntable, and the turntable is internally provided with a moving cavity. And a spring and a moving plate are arranged in the moving cavity, an adjusting groove with the rectangular section is formed in the bottom of the moving cavity, an adjusting pipe, an adjusting screw rod and an adjusting plate which are used for adjusting the locking force of the bolt are arranged in the adjusting groove, and a sleeve is arranged on one side of the rotating disc. When the device is used, the spring pushes the positioning rod to be jacked outwards through the movable plate, the limiting restraining force of the positioning rod in the arc-shaped groove can be changed, the locking force of the bolt can be adjusted, and the relative stability of the elastic force of the spring can be ensured through the matching of the adjusting screw rod and the adjusting pipe; therefore, the influence on the adjustment of the locking force of the bolt can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic screw locking machines, in particular to a locking force adjusting device for an automatic screw locking machine. Background Art

[0002] Screws are indispensable components in daily life and industrial production, and their applications in daily life and industrial production are very extensive. For example, televisions, computers, furniture, and so on. An automatic screw locking machine is a machine used to replace the traditional manual screw tightening. Manual screw tightening includes two types: pure manual tightening and tightening with an electric screwdriver or a pneumatic screwdriver. The latter generates rotational power through an electric or pneumatic method to replace the frequent manual tightening action, which reduces the working intensity of screw locking to a certain extent. An automatic screw locking machine realizes the automatic feeding, tightening, and detection of screws through various electric and pneumatic components, simplifies the screw fastening process through equipment, and achieves the reduction of the number of workers and the elimination of adverse factors caused by manual misoperation.

[0003] After retrieval, a patent document with the application number CN202321440459.4 discloses a locking force adjusting device for an automatic screw locking machine, which includes a base, a workbench, a positioning component, and an adjusting component. The workbench is installed on the top of the base, and an electric sliding table is embedded on the surface of the workbench. The sliding end of the electric sliding table is connected with a clamping plate through an electric cylinder.

[0004] In the above prior art, although the adjusting rod is inserted into the through hole and presses the adjusting sleeve, the spring, and the positioning rod to adjust the locking force of the bolt, after the adjusting rod is inserted into the through hole, with the continuous rotation of the turntable and some vibrations during use, the adjusting rod may fall off from the through hole, thus unable to ensure the relative stability of the spring force, and further affecting the adjustment of the bolt locking force. Therefore, a locking force adjusting device for an automatic screw locking machine is now proposed. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the defect in the prior art that after the adjusting rod is inserted into the through hole, with the continuous rotation of the turntable and some vibrations during use, the adjusting rod may fall off from the through hole, thus unable to ensure the relative stability of the spring force, and further affecting the adjustment of the bolt locking force, and to propose a locking force adjusting device for an automatic screw locking machine.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An automatic screw locking machine locking force adjusting device, including a motor, one end of the motor is provided with an output shaft, one end of the output shaft is fixedly connected with a turntable, a moving cavity is arranged inside the turntable, a spring and a moving plate are arranged inside the moving cavity, a regulating groove with a rectangular cross-section is opened at the bottom of the moving cavity, and a regulating tube, a regulating screw and a regulating plate for adjusting the bolt locking force are arranged inside the regulating groove. A sleeve is arranged on one side of the turntable.

[0008] Preferably, a moving hole communicating with the inside of the moving cavity is opened on the outer wall of the turntable, the moving plate slides with the inner wall of the moving cavity, a positioning rod is fixedly connected to the top of the moving plate, and the positioning rod slides with the inner wall of the moving hole.

[0009] Preferably, limiting grooves are symmetrically opened on the inner wall of the moving cavity, limiting plates are fixedly connected to both sides of the moving plate, the limiting plates slide with the inner wall of the limiting grooves, the top of the spring is fixedly connected to the moving plate, and the bottom of the spring is fixedly connected to the regulating plate.

[0010] Preferably, the regulating tube slides with the inner wall of the regulating groove, the top of the regulating tube abuts against the bottom of the regulating plate, the regulating plate slides with the inner wall of the moving cavity, the cross-section of the regulating tube is rectangular, and the inner wall of the regulating tube is threadedly connected with the regulating screw.

[0011] Preferably, a driving cavity is arranged inside the turntable, a round hole is opened between the regulating groove and the driving cavity, the regulating screw is connected through a first bearing inside the round hole, a worm gear is fixedly connected to one end of the regulating screw located inside the driving cavity, a worm meshing with the worm gear is arranged inside the driving cavity, the worm rotates through the turntable, an installation groove is opened on the outer wall of the turntable, the inner wall of the installation groove is connected with the worm through a second bearing, and a driving groove with a hexagonal cross-section is opened at one end of the worm.

[0012] Preferably, arc-shaped grooves are arranged on the inner wall of the sleeve at circumferentially equidistant intervals, and a driving sleeve with a hexagonal cross-section is fixedly connected to one side of the sleeve.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] When this device is in use, the rotation of the worm is controlled by inserting a hexagonal wrench into the drive slot. The worm will control the rotation of the adjusting screw through the worm gear. The rotation of the adjusting screw will control the adjusting tube to enter the inside of the moving cavity and squeeze the spring through the adjusting plate. The spring will push the positioning rod outwards through the moving plate, which can change the limiting binding force of the positioning rod inside the arc-shaped slot and can adjust the locking force of the bolt. Moreover, through the cooperation of the adjusting screw and the adjusting tube, the relative stability of the spring force can be ensured, thereby avoiding affecting the adjustment of the bolt locking force. Description of the Drawings

[0015] Figure 1 Fig. is an external three-dimensional structural schematic diagram of a locking force adjusting device for an automatic screw locking machine proposed by the present utility model;

[0016] Figure 2 Fig. is a sectional three-dimensional structural schematic diagram of a locking force adjusting device for an automatic screw locking machine proposed by the present utility model;

[0017] Figure 3 Fig. is an internal three-dimensional structural schematic diagram of the turntable;

[0018] Figure 4 Fig. is a connecting three-dimensional structural schematic diagram of the worm, worm gear and adjusting screw.

[0019] In the figure: 1 motor, 2 output shaft, 3 turntable, 4 moving cavity, 5 spring, 6 moving plate, 7 adjusting slot, 8 adjusting tube, 9 adjusting screw, 10 adjusting plate, 11 sleeve, 12 moving hole, 13 positioning rod, 14 limiting slot, 15 limiting plate, 16 drive cavity, 17 worm gear, 18 worm, 19 arc, 20 drive sleeve. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in 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 creative efforts shall fall within the protection scope of the present utility model.

[0021] Refer to Figures 1-4 A locking force adjusting device for an automatic screw locking machine, including a motor 1. One end of the motor 1 is provided with an output shaft 2. One end of the output shaft 2 is fixedly connected with a turntable 3. The inside of the turntable 3 is provided with a moving cavity 4. The inside of the moving cavity 4 is provided with a spring 5 and a moving plate 6. The bottom of the moving cavity 4 is provided with an adjusting slot 7 with a rectangular cross-section. The inside of the adjusting slot 7 is provided with an adjusting tube 8, an adjusting screw 9 and an adjusting plate 10 for adjusting the locking force of the bolt. One side of the turntable 3 is provided with a sleeve 11.

[0022] Further, a moving hole 12 communicating with the inside of the moving cavity 4 is formed in the outer wall of the turntable 3. The moving plate 6 slides on the inner wall of the moving cavity 4. A positioning rod 13 is fixedly connected to the top of the moving plate 6, and the positioning rod 13 is slidably connected to the inner wall of the moving hole 12;

[0023] It should be noted that by inserting the turntable 3 into the inside of the sleeve 11, then inserting the positioning rod 13 into the inside of the arc-shaped groove 19, and then rotating the turntable 3, the rotation of the sleeve 11 and the driving sleeve 20 can be controlled, so that the bolt can be tightened.

[0024] Further, limiting grooves 14 are symmetrically formed in the inner wall of the moving cavity 4. Limiting plates 15 are fixedly connected to both sides of the moving plate 6, and the limiting plates 15 are slidably connected to the inner wall of the limiting grooves 14. The top of the spring 5 is fixedly connected to the moving plate 6, and the bottom of the spring 5 is fixedly connected to the adjusting plate 10;

[0025] It should be noted that by the sliding connection between the limiting plates 15 and the inner wall of the limiting grooves 14, the moving plate 6 and the positioning rod 13 can move stably and are not prone to deflection.

[0026] Further, the adjusting tube 8 is slidably connected to the inner wall of the adjusting groove 7. The top of the adjusting tube 8 abuts against the bottom of the adjusting plate 10. The adjusting plate 10 is slidably connected to the inner wall of the moving cavity 4. The cross section of the adjusting tube 8 is rectangular, and the inner wall of the adjusting tube 8 is threadedly connected to the adjusting screw 9;

[0027] It should be noted that the inner wall of the adjusting tube 8 is provided with internal threads threadedly connected to the adjusting screw 9, and through the adjusting rod with a rectangular cross section and the adjusting groove 7, the adjusting tube 8 can be controlled to move stably in a straight line when the adjusting screw 9 rotates.

[0028] Further, a driving cavity 16 is arranged inside the turntable 3. A round hole is formed between the adjusting groove 7 and the driving cavity 16. One end of the adjusting screw 9 in the round hole is connected to the adjusting screw 9 through a first bearing. One end of the adjusting screw 9 located inside the driving cavity 16 is fixedly connected to a worm gear 17. A worm 18 meshing with the worm gear 17 is arranged inside the driving cavity 16. The worm 18 rotates through the turntable 3. An installation groove is formed in the outer wall of the turntable 3. The inner wall of the installation groove is connected to the worm 18 through a second bearing. A driving groove with a hexagonal cross section is formed at one end of the worm 18;

[0029] It should be noted that through the first bearing, the position of the adjusting screw 9 can be fixed, and the adjusting screw 9 can rotate stably. Through the second bearing, the position of the worm 18 can be fixed, and the worm 18 can rotate stably.

[0030] Furthermore, the inner wall of the sleeve 11 is provided with arc-shaped grooves 19 distributed equidistantly around the circumference, and a driving sleeve 20 with a hexagonal cross section is fixedly connected to one side of the sleeve 11;

[0031] It should be noted that the drive sleeve 20 can be inserted into one end of the bolt. As the motor 1 controls the rotation of the turntable 3 through the output shaft 2, the turntable 3 controls the rotation of the drive sleeve 20 through the sleeve 11, and the bolt can be locked.

[0032] Working principle of this utility model:

[0033] Insert a hexagonal wrench into the drive slot to control the rotation of the worm 18, and the worm 18 will control the rotation of the adjusting screw 9 through the worm gear 17. The rotation of the adjusting screw 9 will control the adjusting tube 8 to enter the interior of the movable cavity 4 and squeeze the spring 5 through the adjusting plate 10. The spring 5 will push the positioning rod 13 outward through the movable plate 6, which can change the limiting constraint force of the positioning rod 13 in the arc-shaped groove 19, and can adjust the locking force of the bolt. By cooperating with the adjusting screw 9 and the adjusting tube 8, the relative stability of the elastic force of the spring 5 can be guaranteed, thereby avoiding affecting the adjustment of the locking force of the bolt.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic screw locking machine locking force adjustment device, including a motor (1), characterized in that, One end of the motor (1) is provided with an output shaft (2). One end of the output shaft (2) is fixedly connected with a turntable (3). A moving cavity (4) is arranged inside the turntable (3). A spring (5) and a moving plate (6) are arranged inside the moving cavity (4). A regulating groove (7) with a rectangular cross-section is formed at the bottom of the moving cavity (4). A regulating tube (8), a regulating screw (9) and a regulating plate (10) for regulating the bolt locking force are arranged inside the regulating groove (7). A sleeve (11) is arranged on one side of the turntable (3).

2. The tightening force adjusting device of an automatic screw locking machine according to claim 1, characterized in that, A moving hole (12) communicating with the inside of the moving cavity (4) is formed on the outer wall of the turntable (3). The moving plate (6) slides on the inner wall of the moving cavity (4). A positioning rod (13) is fixedly connected to the top of the moving plate (6). The positioning rod (13) is slidably connected to the inner wall of the moving hole (12).

3. The locking force adjusting device of an automatic screw locking machine according to claim 1, characterized in that, Limiting grooves (14) are symmetrically formed on the inner wall of the moving cavity (4). Limiting plates (15) are fixedly connected to both sides of the moving plate (6). The limiting plates (15) are slidably connected to the inner wall of the limiting grooves (14). The top of the spring (5) is fixedly connected to the moving plate (6). The bottom of the spring (5) is fixedly connected to the regulating plate (10).

4. An automatic screw locking machine locking force adjusting device according to claim 1, characterized in that, The regulating tube (8) is slidably connected to the inner wall of the regulating groove (7). The top of the regulating tube (8) abuts against the bottom of the regulating plate (10). The regulating plate (10) slides on the inner wall of the moving cavity (4). The cross-section of the regulating tube (8) is rectangular. The inner wall of the regulating tube (8) is threadedly connected to the regulating screw (9).

5. An automatic screw locking machine locking force adjusting device according to claim 1, characterized in that, A driving cavity (16) is arranged inside the turntable (3). A round hole is formed between the regulating groove (7) and the driving cavity (16). One end of the regulating screw (9) is connected to the round hole through a first bearing. One end of the regulating screw (9) located inside the driving cavity (16) is fixedly connected with a worm gear (17). A worm (18) meshing with the worm gear (17) is arranged inside the driving cavity (16). The worm (18) rotates through the turntable (3). An installation groove is formed on the outer wall of the turntable (3). The inner wall of the installation groove is connected to the worm (18) through a second bearing. A driving groove with a hexagonal cross-section is formed at one end of the worm (18).

6. The tightening force adjusting device of an automatic screw locking machine according to claim 1, characterized in that, Arc-shaped grooves (19) are formed on the inner wall of the sleeve (11) at circumferentially equidistant intervals. A driving sleeve (20) with a hexagonal cross-section is fixedly connected to one side of the sleeve (11).

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