Linear motion mechanism with safety protection function

Abstract

The utility model discloses a rectilinear motion mechanism with a safety protection function, which relates to the technical field of rectilinear motion mechanisms and comprises a casing, a coupler is fixedly arranged on one side of the inner wall of the casing, a ball screw is rotatably arranged on the other side of the inner wall of the casing, a motor is fixedly arranged on the outer wall of the casing, and the motor, the coupler and the ball screw are connected. Two symmetrically-arranged sliding rails are fixedly arranged on the inner wall of the machine shell, the outer sides of the two sliding rails are each slidably sleeved with two symmetrically-arranged sliding blocks, supporting tables are fixedly arranged on the tops of the multiple sliding blocks, and ball nuts are fixedly arranged on the inner walls of the supporting tables. According to the ball screw, the ball nut and the brake nut provided by the utility model, the right channel profiling structure is arranged in the brake nut, so that once the matching between the ball screw and the ball nut goes wrong, the protruding profiling structure is in contact with the groove of the ball screw, and the ball nut stops linear motion; and it is ensured that the whole mechanism does not rapidly fall.

Description

Technical Field

[0001] The utility model relates to the technical field of linear motion mechanisms, and particularly relates to a linear motion mechanism with a safety protection function. Background Art

[0002] A linear motion mechanism is a mechanism that enables a certain point on a component to perform an accurate or approximate linear motion. Existing linear motion mechanisms often use a ball screw in cooperation with a slider to perform linear motion. During the rotation of the ball screw, the slider's sliding is completed through the cooperation of the balls inside the ball nut and the thread grooves on the outer side of the screw. However, when the existing ball screw cooperates with the ball nut, there is no external protection measure, which easily causes the balls to be misaligned or the beads to burst when cooperating with the surface of the screw, making the linear motion unable to proceed stably. At the same time, it will also cause the problem of the goods carried by the mechanism falling rapidly, reducing the operating stability of the linear motion mechanism.

[0003] Therefore, we propose a linear motion mechanism with a safety protection function to solve the above problems. Summary of the Utility Model

[0004] In view of the problems existing in the above-mentioned existing linear motion mechanisms with safety protection functions, the present utility model is proposed.

[0005] Therefore, the purpose of the present utility model is to provide a linear motion mechanism with a safety protection function, which solves the problem that no protection component is provided outside when the ball screw cooperates with the ball nut, reducing the stability during the operation of the ball screw.

[0006] In order to achieve the above purpose, the present utility model provides the following technical solutions:

[0007] A linear motion mechanism with a safety protection function includes a machine shell. On one side of the inner wall of the machine shell, a coupling is fixedly provided. On the other side of the inner wall of the machine shell, a ball screw is rotatably provided. On the outer wall of the machine shell, a motor is fixedly provided, and the motor, the coupling, and the ball screw are connected.

[0008] On the inner wall of the machine shell, two symmetrically arranged slide rails are fixedly provided. On the outer sides of the two slide rails, two symmetrically arranged sliders are slidably sleeved. On the tops of the multiple sliders, support platforms are fixedly provided. Inside the support platforms, ball nuts are fixedly provided. The ball nuts are rotatably sleeved on the ball screw. On the outer wall of the ball nut, a brake nut is fixedly provided, and the brake nut is sleeved on the ball screw.

[0009] The inner wall of the brake nut is provided with a channel profiling structure, which protrudes and is arranged in cooperation with the ball groove on the rod wall of the ball screw.

[0010] Preferably, a protective cover plate is provided on the upper end of the casing. The interior of the protective cover plate is hollow, and two symmetrically arranged quick-release mechanisms are provided between the protective cover plate and the inner wall of the casing.

[0011] Preferably, each quick-release mechanism includes two symmetrically arranged insertion rods. Two symmetrically arranged strip-shaped holes are formed in the top of the protective cover plate. The insertion rods are slidably arranged in the strip-shaped holes, and springs are fixedly arranged between the insertion rods and the inner walls of the strip-shaped holes. The lower ends of the insertion rods pass through the protective cover plate, and a plurality of insertion holes for the insertion rods to be inserted are formed in the upper ends of both sides of the inner wall of the casing.

[0012] Preferably, a connection groove for inserting the ball nut is formed at the end of the brake nut.

[0013] Furthermore, a plurality of limiting columns are fixedly arranged on the inner side wall of the casing.

[0014] Preferably, a through hole for the ball screw to pass through is formed in the interior of the support platform.

[0015] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0016] 1. In the present utility model, by providing a ball screw, a ball nut and a brake nut, and by arranging a right-channel profiling structure inside the brake nut, once there is a problem with the cooperation between the ball screw and the ball nut, the protruding profiling structure will contact the groove of the ball screw, causing the ball nut to stop linear motion and ensuring that the overall mechanism does not fall rapidly.

[0017] 2. In the present utility model, by providing a protective cover plate and a quick-release mechanism, the protective cover plate can be quickly disassembled, facilitating the timely disassembly and maintenance of the internal components of the moving mechanism, and improving the overall convenience of use of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0019] Figure 1 is a three-dimensional structural diagram of the present utility model;

[0020] Figure 2 is an exploded view of the present utility model;

[0021] Figure 3 is a three-dimensional structural diagram of the brake nut of the present utility model;

[0022] Figure 4 For the present utility model Figure 2 Schematic enlarged view of part A

[0023] Explanation of reference numerals in the drawings:

[0024] 1. Machine housing; 2. Coupling; 3. Ball screw; 4. Motor; 5. Slide rail; 6. Slide block; 7. Support table; 8. Ball nut; 9. Brake nut; 10. Groove profiling structure; 11. Protective cover plate; 12. Plug rod; 13. Strip hole; 14. Spring; 15. Insertion hole; 16. Limit post; 17. Through hole. Specific embodiments

[0025] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below with reference to the drawings.

[0026] An embodiment of the present utility model discloses a linear motion mechanism with a safety protection function.

[0027] The present utility model provides a linear motion mechanism with a safety protection function as shown in Figures 1-4 Figure, which includes a machine housing 1. On one side of the inner wall of the machine housing 1, a coupling 2 is fixedly provided. On the other side of the inner wall of the machine housing 1, a ball screw 3 is rotatably provided. On the outer wall of the machine housing 1, a motor 4 is fixedly provided. The motor 4, the coupling 2 and the ball screw 3 are connected and arranged;

[0028] On the inner wall of the machine housing 1, two symmetrically arranged slide rails 5 are fixedly provided. On the outer sides of the two slide rails 5, two symmetrically arranged slide blocks 6 are slidably sleeved. On the tops of the multiple slide blocks 6, support tables 7 are fixedly provided. Inside the support table 7, a through hole 17 for the ball screw 3 to pass through is opened. On the inner side wall of the machine housing 1, multiple limit posts 16 are fixedly provided. On the inner wall of the support table 7, a ball nut 8 is fixedly provided. The ball nut 8 is rotatably sleeved on the ball screw 3. On the outer wall of the ball nut 8, a brake nut 9 is fixedly provided. The brake nut 9 is sleeved on the ball screw 3. At the end of the brake nut 9, a connection groove for the ball nut 8 to be inserted into is opened;

[0029] The inner wall of the brake nut 9 is provided with a groove profiling structure 10. The groove profiling structure 10 protrudes and is arranged in cooperation with the ball groove on the rod wall of the ball screw 3.

[0030] When the linear motion mechanism is working, through the driving cooperation of the motor 4 and the coupling 2, the ball screw 3 can rotate stably. At this time, under the connection of the ball nut 8 and the ball screw 3, the support platform 7 can move stably. At the same time, under the sliding cooperation of multiple sliders 6 and slide rails 5, the linear movement stability of the support platform 7 is further improved. During the cooperation between the ball nut 8 and the ball screw 3, the brake nut 9 effectively protects the rotation of the ball screw 3. When there is a problem with the cooperation between the ball screw 3 and the ball nut 8, the channel profiling structure 10 protruding inside the brake nut 9 will contact the groove of the ball screw 3, causing the ball nut 8 to stop linear motion, ensuring that the overall mechanism does not fall rapidly, and improving the operation stability of the linear motion mechanism.

[0031] In order to ensure that the internal components of the mechanism are not affected during operation and can be quickly repaired, such as Figures 1-2 and Figure 4 As shown, a protective cover plate 11 is provided on the upper end of the housing 1. The inside of the protective cover plate 11 is hollow. There are two symmetrically arranged quick-release mechanisms between the protective cover plate 11 and the inner wall of the housing 1. The quick-release mechanism includes two symmetrically arranged insertion rods 12. Two symmetrically arranged strip holes 13 are opened at the top of the protective cover plate 11. The insertion rods 12 are slidably arranged in the strip holes 13, and a spring 14 is fixedly arranged between the insertion rods 12 and the inner wall of the strip holes 13. The lower ends of the insertion rods 12 pass through the protective cover plate 11, and a plurality of insertion holes 15 for inserting the insertion rods 12 are opened at the upper ends of both sides of the inner wall of the housing 1.

[0032] Before the mechanism operates, through the insertion of the insertion rods 12 into the insertion holes 15, the protective cover plate 11 can be set above the housing 1. At this time, the relevant components inside the housing 1 can be protected to avoid being affected by the outside as much as possible, ensuring the stable operation of the mechanism. When there is a problem with the cooperation between the ball screw 2 and the ball nut 8, the plurality of insertion rods 12 can be pushed simultaneously, so that the insertion rods 12 slide inside the strip holes 13 and are pulled out of the insertion holes 15 at the same time, and the spring 14 is compressed. At this time, the protective cover plate 11 can be quickly removed from the housing 1, improving the convenience of using the mechanism.

[0033] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A linear motion mechanism with a safety protection function, comprising a housing (1), characterized in that, On one side of the inner wall of the housing (1), a coupling (2) is fixedly provided. On the other side of the inner wall of the housing (1), a ball screw (3) is rotatably provided. On the outer wall of the housing (1), a motor (4) is fixedly provided. The motor (4), the coupling (2), and the ball screw (3) are connected. On the inner wall of the housing (1), two symmetrically arranged slide rails (5) are fixedly provided. On the outer sides of the two slide rails (5), two symmetrically arranged sliders (6) are slidably sleeved. On the tops of the multiple sliders (6), support platforms (7) are fixedly provided. Inside the inner wall of the support platform (7), a ball nut (8) is fixedly provided. The ball nut (8) is rotatably sleeved on the ball screw (3). On the outer wall of the ball nut (8), a brake nut (9) is fixedly provided. The brake nut (9) is sleeved on the ball screw (3). Inside the inner wall of the brake nut (9), a groove profiling structure (10) is provided. The groove profiling structure (10) protrudes and is arranged in cooperation with the ball groove on the rod wall of the ball screw (3).

2. The linear motion mechanism with a safety protection function according to claim 1, characterized in that, On the upper end of the housing (1), a protective cover plate (11) is provided. The inside of the protective cover plate (11) is hollow. Between the protective cover plate (11) and the inner wall of the housing (1), two symmetrically arranged quick-release mechanisms are provided.

3. The linear motion mechanism with a safety protection function according to claim 2, characterized in that, The quick-release mechanism includes two symmetrically arranged insertion rods (12). On the top of the protective cover plate (11), two symmetrically arranged strip-shaped holes (13) are opened. The insertion rods (12) are slidably arranged in the strip-shaped holes (13), and a spring (14) is fixedly provided between the insertion rods (12) and the inner walls of the strip-shaped holes (13). The lower ends of the insertion rods (12) pass through the protective cover plate (11). On the upper ends of both sides of the inner wall of the housing (1), multiple insertion holes (15) for inserting the insertion rods (12) are opened.

4. The linear motion mechanism with a safety protection function according to claim 1, characterized in that, At the end of the brake nut (9), a connection groove for inserting the ball nut (8) is opened.

5. The linear motion mechanism with a safety protection function according to claim 1, characterized in that, On the inner side wall of the housing (1), multiple limit posts (16) are fixedly provided.

6. The linear motion mechanism with a safety protection function according to claim 1, characterized in that, Inside the support platform (7), a through hole (17) for the ball screw (3) to pass through is opened.

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