One-way limiting lead screw and linear module

Abstract

The utility model discloses a one-way limiting lead screw, which belongs to a linear module and comprises a mounting frame and a lead screw, one end of the lead screw is rotatably arranged in the mounting frame through a support bearing, an upper limiting ring and a lower limiting ring are slidably sleeved on the outer cambered surface of the lead screw, and one end of the upper limiting ring is rotatably connected with one end of the lower limiting ring. Bolting plates are arranged at the other end of the upper limiting ring and the other end of the lower limiting ring; a limiting assembly used for driving an upper limiting ring and a lower limiting ring to move and be fixed is arranged on the side face of the mounting frame, the upper limiting ring and the lower limiting ring are driven to move on the outer arc face of a lead screw through a movable sleeve and a connecting rod so as to move to the limiting position, and then the movable sleeve is fixed to the outer arc face of a movable column through a fixing module. The upper limiting ring and the lower limiting ring are fixedly connected to the outer arc face of the lead screw in a sleeving mode, the movable block on the outer arc face of the lead screw is limited, limiting can be conducted without connection with a power source, and then the applicability of the linear module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of limit screws, in particular to a one-way limit screw and a linear module. Background Technique

[0002] There are several names for linear modules, such as linear modules, Cartesian robots, linear slides, etc. They are automated upgrade units following linear guides, linear motion modules, and ball screw linear drive mechanisms. Through the combination of each unit, the linear and curvilinear motion of the load can be realized, making the automation of light loads more flexible and the positioning more accurate; the screw, also known as the ball screw, is an ideal product for converting rotary motion into linear motion or vice versa. The ball screw is the most commonly used transmission element in machine tools and precision machinery. Its main function is to convert rotary motion into linear motion or convert torque into axial reciprocating force, and it also has the characteristics of high precision, reversibility, and high efficiency. Due to its very small frictional resistance, the ball screw is widely used in various industrial equipment and precision instruments;

[0003] When the existing linear modules are in use, a limit module is mostly set to limit the screw. However, most traditional limiters require an external power supply, which has high requirements for the installation environment of the linear module, resulting in great limitations in the screw limit of the linear module, thus reducing the applicability of the linear module; therefore, we need to propose a one-way limit screw and a linear module. Content of the Utility Model

[0004] The purpose of the utility model is to provide a one-way limit screw and a linear module. By sleeving the upper limit ring and the lower limit ring on the outer arc surface of the screw, and bolting the upper limit ring and the lower limit ring together, then bolting the moving column to one side of the installation frame, so as to drive the upper limit ring and the lower limit ring to move on the outer arc surface of the screw through the moving sleeve and the connecting rod, and then move to the limit position, and then fixing the moving sleeve on the outer arc surface of the moving column through the fixing module, so as to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] One-way limit screw. It includes an installation frame and a screw. One end of the screw is rotatably arranged inside the installation frame through a support bearing. The outer arc surface of the screw is slidably sleeved with an upper limit ring and a lower limit ring. One end of the upper limit ring is rotatably connected to one end of the lower limit ring, and bolt plates are arranged at the other ends of the upper limit ring and the lower limit ring;

[0007] A limit component for driving the upper limit ring and the lower limit ring to move and be fixed is arranged on the side of the installation frame;

[0008] The limiting component includes a moving column, a moving sleeve, a connecting rod and a fixing module. The moving sleeve is slidably sleeved on the outer arc surface of the moving column, and the upper limiting ring is fixedly connected to the moving sleeve through the connecting rod.

[0009] Preferably, the fixing module includes an eccentric wheel, a rotating plate, a pressing arc plate and a spring plunger. The eccentric wheel is rotatably arranged inside the moving sleeve, the rotating plate is fixedly arranged on the outer arc surface of the eccentric wheel, the pressing arc plate is slidably arranged inside the moving sleeve, and the pressing arc plate is located below the eccentric wheel. The spring plungers are symmetrically arranged on both sides of the rotating plate.

[0010] Preferably, a placement groove corresponding to the pressing arc plate is formed inside the moving sleeve, and a pressing groove corresponding to the pressing arc plate is formed on the outer arc surface of the moving column. Two groups of connecting columns are symmetrically arranged on the upper surface of the pressing arc plate, and the two groups of connecting columns are slidably arranged on the inner wall of the moving sleeve.

[0011] Preferably, a moving groove corresponding to the rotating plate is formed at the top end of the moving sleeve, and a positioning hole corresponding to the spring plunger is formed inside the moving groove.

[0012] Preferably, connecting plates are fixedly connected to both ends of the moving column, and the two groups of connecting plates are bolted to the side surface of the mounting frame.

[0013] Based on the one-way limiting lead screw described above, a linear module is also provided, which includes two limiting rods. Both of the two limiting rods are rotatably arranged inside the mounting frame through stoppers, and the two limiting rods are symmetrically arranged on both sides of the lead screw. A moving block is slidably arranged inside the mounting frame and on the outer arc surfaces of the lead screw and the limiting rods, and the lead screw is threadedly connected to the moving block.

[0014] Preferably, a motor seat is fixedly installed at one end of the mounting frame, a motor is bolted inside the motor seat, and the output end of the motor is key-connected to the lead screw

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] In the present utility model, the upper limiting ring and the lower limiting ring are sleeved on the outer arc surface of the lead screw, and the upper limiting ring and the lower limiting ring are bolted together. Then, the moving column is bolted to one side of the mounting frame. Thus, the upper limiting ring and the lower limiting ring are driven by the moving sleeve and the connecting rod to move on the outer arc surface of the lead screw and then move to the limiting position. Then, the moving sleeve is fixed to the outer arc surface of the moving column through the fixing module. The upper limiting ring and the lower limiting ring are fixedly sleeved on the outer arc surface of the lead screw to limit the moving block on the outer arc surface of the lead screw. Thus, the limiting can be carried out without connecting a power supply, and further the applicability of the linear module is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 Structural schematic diagram of the moving component of the present utility model;

[0019] Figure 3 Internal structural schematic diagram of the moving sleeve of the present utility model;

[0020] Figure 4 For the present utility model Figure 2 Enlarged view of the structure at position A in the present utility model.

[0021] In the figure: 1, mounting frame; 2, lead screw; 3, moving block; 4, limiting rod; 5, stop block; 6, support bearing; 7, connecting plate; 8, moving column; 9, moving sleeve; 10, fitting groove; 11, motor seat; 12, motor; 13, placement groove; 14, connecting rod; 15, upper limit ring; 16, lower limit ring; 17, bolted plate; 18, eccentric wheel; 19, rotating plate; 20, fitting arc plate; 21, spring plunger; 22, connecting column; 23, positioning hole; 24, moving groove. Specific embodiments

[0022] 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 of 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.

[0023] Please refer to Figures 1 to 4 , the present utility model provides a technical solution:

[0024] The one-way limiting lead screw includes a mounting frame 1 and a lead screw 2. One end of the lead screw 2 is rotatably arranged inside the mounting frame 1 through a support bearing 6. The outer arc surface of the lead screw 2 is slidably sleeved with an upper limit ring 15 and a lower limit ring 16. One end of the upper limit ring 15 is rotatably connected to one end of the lower limit ring 16, and bolted plates 17 are provided at the other ends of both the upper limit ring 15 and the lower limit ring 16;

[0025] A limiting component for driving the upper limit ring 15 and the lower limit ring 16 to move and be fixed is arranged on the side of the mounting frame 1;

[0026] The limiting component includes a moving column 8, a moving sleeve 9, a connecting rod 14 and a fixing module. The moving sleeve 9 is slidably sleeved on the outer arc surface of the moving column 8, and the upper limit ring 15 is fixedly connected to the moving sleeve 9 through the connecting rod 14;

[0027] When it is necessary to limit the screw rod 2, the upper limit ring 15 and the lower limit ring 16 are slidably sleeved on the outer arc surface of the screw rod 2 through the rotation connection of the upper limit ring 15 and the lower limit ring 16, and then the upper limit ring 15 and the lower limit ring 16 are bolted together through two sets of bolt plates 17, and the upper limit ring 15 and the lower limit ring 16 are driven to move on the outer arc surface of the screw rod 2 through the movable sleeve 9 and the connecting rod 14, so as to move to the limit position, and then the movable sleeve 9 is fixed to the outer arc surface of the movable column 8 through the fixed module, and the upper limit ring 15 and the lower limit ring 16 are fixedly sleeved on the outer arc surface of the screw rod 2 to limit the moving block 3 on the outer arc surface of the screw rod 2, so that the limitation can be performed without connecting the power supply, thereby improving the applicability of the linear module.

[0028] As a preferred embodiment, the fixed module includes an eccentric wheel 18, a rotating plate 19, a close arc plate 20 and a spring plunger 21. The eccentric wheel 18 is rotatably arranged inside the movable sleeve 9. The rotating plate 19 is fixedly arranged on the outer arc surface of the eccentric wheel 18. The close arc plate 20 is slidably arranged inside the movable sleeve 9, and the close arc plate 20 is located below the eccentric wheel 18. The spring plunger 21 is symmetrically arranged on both sides of the rotating plate 19. The eccentric wheel 18 is driven to move inside the movable sleeve 9 by the rotating plate 19. It rotates, and the eccentric wheel 18 is set as an eccentric wheel, so that when the eccentric wheel 18 rotates, it will press against the arc plate 20 or move away from the arc plate 20. When the eccentric wheel 18 presses against the arc plate 20, the arc plate 20 will press against the closing groove 10, thereby fixing the position of the movable sleeve 9, and then fixing the position of the upper limit ring 15 and the lower limit ring 16, so that the movable block 3 on the outer arc surface of the screw rod 2 is limited by the upper limit ring 15 and the lower limit ring 16.

[0029] Furthermore, a placement groove 13 corresponding to the close arc plate 20 is opened inside the movable sleeve 9, and a close groove 10 corresponding to the close arc plate 20 is opened on the outer arc surface of the movable column 8. Two groups of connecting columns 22 are symmetrically arranged on the upper surface of the close arc plate 20, and the two groups of connecting columns 22 are slidably arranged on the inner wall of the movable sleeve 9. The close arc plate 20 slides up and down inside the placement groove 13, and is connected to the inside of the movable sleeve 9 through the connecting columns 22, so as to ensure that after the eccentric wheel 18 is away from the close arc plate 20, the close arc plate 20 can move up and down slightly, and the close arc plate 20 will not detach from the placement groove 13 under the limit of the connecting columns 22, thereby ensuring the stability of the fixed module.

[0030] Furthermore, a moving groove 24 corresponding to the rotating plate 19 is provided at the top of the movable sleeve 9, and a positioning hole 23 corresponding to the spring plunger 21 is provided inside the moving groove 24. The moving groove 24 is provided to ensure that the rotating plate 19 can rotate, thereby driving the eccentric wheel 18 to rotate, and when the eccentric wheel 18 rotates to press against the arc plate 20, the spring plunger 21 will be stuck in the positioning hole 23, thereby fixing the position of the eccentric wheel 18, thereby further improving the stability of the fixed module.

[0031] It should be noted that connecting plates 7 are fixedly connected to both ends of the moving column 8, and the two groups of connecting plates 7 are bolted to the side surface of the mounting frame 1. The moving column 8 is connected to the mounting frame 1 through the two groups of connecting plates 7, thereby ensuring the stability of the moving column 8 during use.

[0032] Based on the one-way limiting lead screw described above, a linear module is further provided, which includes two limiting rods 4. The two limiting rods 4 are rotatably arranged inside the mounting frame 1 through stoppers 5, and the two limiting rods 4 are symmetrically arranged on both sides of the lead screw 2. A moving block 3 is slidably arranged inside the mounting frame 1 and on the outer arc surfaces of the lead screw 2 and the limiting rods 4, and the lead screw 2 is threadedly connected to the moving block 3. The stopper 5 is provided to limit the moving position of the moving block 3 to prevent the moving block 3 from rubbing against the support bearing 6 due to excessive movement. By providing the two limiting rods 4 to limit the moving block 3, it is ensured that the moving block 3 does not rotate along with the lead screw 2 when moving along the lead screw 2.

[0033] Specifically, a motor seat 11 is fixedly installed at one end of the mounting frame 1. A motor 12 is bolted inside the motor seat 11, and the output end of the motor 12 is key-connected to the lead screw 2. The motor seat 11 is provided to support the motor 12, and the motor 12 drives the lead screw 2 to rotate, thereby driving the moving block 3 to move along the lead screw 2.

[0034] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. One-way limit lead screw, comprising, characterized in that: An installation frame (1) and a lead screw (2), one end of the lead screw (2) is rotatably arranged inside the installation frame (1) through a support bearing (6), an upper limit ring (15) and a lower limit ring (16) are slidably sleeved on the outer arc surface of the lead screw (2), one end of the upper limit ring (15) is rotatably connected to one end of the lower limit ring (16), and bolted plates (17) are arranged at the other ends of the upper limit ring (15) and the lower limit ring (16); A limit component for driving the upper limit ring (15) and the lower limit ring (16) to move and be fixed is arranged on the side surface of the installation frame (1); The limit component includes a moving column (8), a moving sleeve (9), a connecting rod (14) and a fixing module. The moving sleeve (9) is slidably sleeved on the outer arc surface of the moving column (8), and the upper limit ring (15) is fixedly connected to the moving sleeve (9) through the connecting rod (14).

2. The one-way limit lead screw according to claim 1, characterized in that: The fixing module includes an eccentric wheel (18), a rotating plate (19), a pressing arc plate (20) and a spring plunger (21). The eccentric wheel (18) is rotatably arranged inside the moving sleeve (9), the rotating plate (19) is fixedly arranged on the outer arc surface of the eccentric wheel (18), the pressing arc plate (20) is slidably arranged inside the moving sleeve (9), and the pressing arc plate (20) is located below the eccentric wheel (18). The spring plungers (21) are symmetrically arranged on both sides of the rotating plate (19).

3. The one-way limiting lead screw according to claim 2, wherein: A placement groove (13) corresponding to the pressing arc plate (20) is opened inside the moving sleeve (9), and a pressing groove (10) corresponding to the pressing arc plate (20) is opened on the outer arc surface of the moving column (8). Two groups of connecting columns (22) are symmetrically arranged on the upper surface of the pressing arc plate (20), and the two groups of connecting columns (22) are slidably arranged on the inner wall of the moving sleeve (9).

4. The unidirectional limiting lead screw according to claim 2, characterized in that: A moving groove (24) corresponding to the rotating plate (19) is opened at the top end of the moving sleeve (9), and a positioning hole (23) corresponding to the spring plunger (21) is opened inside the moving groove (24).

5. The unidirectional limit screw rod according to claim 1, characterized in that: Both ends of the moving column (8) are fixedly connected with connecting plates (7), and the two groups of connecting plates (7) are bolted to the side surface of the installation frame (1).

6. Linear module, installed with the unidirectional limit screw rod described in any one of the above claims 1-5, characterized in that: It includes two groups of limit rods (4). The two groups of limit rods (4) are both rotatably arranged inside the installation frame (1) through stoppers (5), and the two groups of limit rods (4) are symmetrically arranged on both sides of the lead screw (2). A moving block (3) is slidably arranged inside the installation frame (1) on the outer arc surfaces of the lead screw (2) and the limit rods (4), and the lead screw (2) is threadedly connected with the moving block (3).

7. The linear module according to claim 6, wherein: A motor seat (11) is fixedly installed at one end of the installation frame (1), a motor (12) is bolted inside the motor seat (11), and the output end of the motor (12) is key-connected to the lead screw (2).

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