Linear guide rail with high rigidity and long service life

Abstract

The utility model discloses a linear guide rail with high rigidity and long service life, which relates to the technical field of guide rails and comprises a guide rail body, a moving component and a brake component are arranged in the guide rail body, the moving component comprises a threaded rod, a first roller, a second roller and a moving block, and two ends of the threaded rod are rotatably connected with the inner wall of the guide rail body. The side face of the sliding block is connected with the inner wall of the guide rail body in a sliding mode, the side face of the first rolling wheel is connected with the side face of the sliding block in a rotating mode, and the side face of the second rolling wheel is connected with the side face of the sliding block in a rotating mode. Automatic brake locking is achieved, the situation that the sliding block slides accidentally is effectively prevented, when the sliding block needs to be moved, the moving block pushes the brake block through the second limiting block to overcome the tension of the spring to be separated, the operation process is simple and convenient, and switching between the brake state and the release state can be rapidly achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to guide rail technical field, concretely is a kind of high rigidity long life linear guide rail. BACKGROUND

[0002] Linear guide rail can be divided into three kinds of roller linear guide rail, cylindrical linear guide rail, ball linear guide rail, it is used to support and guide moving part, do reciprocating linear motion according to given direction, according to friction property, linear motion guide rail can be divided into sliding friction guide rail, rolling friction guide rail, elastic friction guide rail, fluid friction guide rail etc.

[0003] Part of brake device of guide rail needs complex mechanical operation (such as manually screwing screw), braking process is time-consuming and low in reliability, it is difficult to lock slider quickly in emergency, there is security risk, for this purpose, we propose a kind of high rigidity long life linear guide rail. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of high rigidity long life linear guide rail.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of high rigidity long life linear guide rail, including guide rail main body, the guide rail main body inside is provided with moving assembly and brake assembly;

[0006] The moving assembly includes threaded rod, slider, first roller, second roller and moving block, both ends of the threaded rod are rotatably connected with the inner wall of guide rail main body, the side surface of the slider is slidably connected with the inner wall of guide rail main body, the side surface of the first roller is rotatably connected with the side surface of the slider, the side surface of the second roller is rotatably connected with the side surface of the slider, the side surface of the moving block is slidably connected with the inner wall of the slider;

[0007] The brake assembly includes brake block, first limit block, second limit block and second spring, the lower end surface of the brake block is slidably connected with the upper end surface of the slider, two brake blocks are connected with the two ends of the second spring, one end of the first limit block is connected with the side surface of the moving block, one end of the second limit block is connected with the upper end surface of the moving block, the side surface of the second limit block is slidably connected with the side surface of the brake block.

[0008] As a further scheme of the utility model: the side surface of the guide rail main body is connected with servo motor, the output end of the servo motor is connected with one end of the threaded rod through the inner wall of guide rail.

[0009] As a further scheme of the utility model: the surface of the first roller is rollingly connected with the inner wall of guide rail main body, the surface of the second roller is rollingly connected with the inner wall of guide rail main body.

[0010] As a further scheme of the utility model: the inner wall of the moving block is in threaded connection with the surface of the threaded rod, and the inner wall of the sliding block is in sliding connection with the surface of the threaded rod.

[0011] As a further scheme of the utility model: the surface of the threaded rod is sleeved with a first spring, one end of the first spring is connected with the inner wall of the sliding block, and the other end of the first spring is connected with the side surface of the moving block.

[0012] As a further scheme of the utility model: the side surface of the brake block abuts against the inner wall of the guide rail main body, and the other end of the first limiting block abuts against the inner wall of the sliding block.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. When the servo motor is not started, the tension of the second spring makes the side surface of the brake block abut against the inner wall of the guide rail main body, so that automatic brake locking is realized, and the situation that the sliding block is accidentally slid is effectively prevented; when the sliding block needs to be moved, the moving block separates the brake block by pushing the brake block against the spring tension through the second limiting block, so that the operation process is simple and convenient, the brake and release states can be quickly switched, the first limiting block abuts against the inner wall of the sliding block when the moving block moves to a specific position, on the one hand, the stroke of the moving block can be limited, and on the other hand, it can be ensured that the brake block completely separates from the inner wall of the guide rail, so that the movement is prevented from being hindered due to the brake not being completely released.

[0015] 2. The moving block and the threaded rod are in threaded connection, the sliding block and the threaded rod are in sliding connection, and the two are elastically connected through the first spring, so that the load generated in the movement process can be effectively dispersed, the rigidity of the whole device is enhanced, and the device can withstand greater external force.

[0016] Other advantages, objects and features of the utility model will be described in the subsequent description to some extent, and will be apparent to those skilled in the art based on the study of the following text or can be taught from the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an overall schematic view in the embodiment of the utility model;

[0018] Figure 2 It is a schematic view of the threaded rod in the embodiment of the utility model;

[0019] Figure 3 It is a schematic view of the sliding block in the embodiment of the utility model;

[0020] Figure 4It is the schematic view of the moving block in the embodiment of the utility model;

[0021] Figure 5 It is the schematic view of the first spring in the embodiment of the utility model;

[0022] Figure 6 It is the schematic view of the brake block in the embodiment of the utility model.

[0023] In the drawing: 1, guide rail main body;2, moving assembly;21, servo motor;22, threaded rod;23, sliding block;24, first roller;25, second roller;26, moving block;3, brake assembly;31, brake block;32, first spring;33, first limit block;34, second limit block;35, second spring. Specific implementation

[0024] The specific implementation of the utility model will be further described below in combination with the drawings, and it needs to be explained here that the description of these implementations is used to help understand the utility model, but does not constitute the limitation of the utility model.

[0025] In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as there is no conflict between them.

[0026] Please refer to the accompanying Figure 1 - the accompanying Figure 6 The utility model discloses a high-rigidity long-service-life linear guide rail, which comprises a guide rail main body 1, and the guide rail main body 1 is internally provided with a moving assembly 2 and a brake assembly 3.

[0027] Embodiment one, the moving assembly 2 includes a threaded rod 22, a sliding block 23, a first roller 24, a second roller 25 and a moving block 26, both ends of the threaded rod 22 are rotationally connected with the inner wall of the guide rail main body 1, the side surface of the sliding block 23 is slidingly connected with the inner wall of the guide rail main body 1, the side surface of the first roller 24 is rotationally connected with the side surface of the sliding block 23, the side surface of the second roller 25 is rotationally connected with the side surface of the sliding block 23, the side surface of the moving block 26 is slidingly connected with the inner wall of the sliding block 23, the guide rail main body 1 is connected with a servo motor 21, the output end of the servo motor 21 penetrates the inner wall of the guide rail and is connected with one end of the threaded rod 22, the surface of the first roller 24 is rollingly connected with the inner wall of the guide rail main body 1, the surface of the second roller 25 is rollingly connected with the inner wall of the guide rail main body 1, the inner wall of the moving block 26 is threadedly connected with the surface of the threaded rod 22, the inner wall of the sliding block 23 is slidingly connected with the surface of the threaded rod 22, the side surface of the brake block 31 is abutted with the inner wall of the guide rail main body 1, the other end of the first limit block 33 is abutted with the inner wall of the sliding block 23.

[0028] Specifically, the servo motor 21 is directly connected with the threaded rod 22 through a coupling, receives pulse signals to control the rotating speed and direction, and drives the moving block 26 to move axially when the motor is started. In the initial stage, the first spring 32 is used to pre-tighten the sliding block 23 to eliminate the transmission gap.

[0029] In the second embodiment, the brake assembly 3 includes brake blocks 31, first and second limiting blocks 33 and 34, and a second spring 35. The lower end surfaces of the brake blocks 31 are slidably connected with the upper end surface of the sliding block 23, the two brake blocks 31 are connected with the two ends of the second spring 35, one end of the first limiting block 33 is connected with the side surface of the moving block 26, one end of the second limiting block 34 is connected with the upper end surface of the moving block 26, the side surface of the second limiting block 34 is slidably connected with the side surface of the brake block 31, the first spring 32 is sleeved on the surface of the threaded rod 22, one end of the first spring 32 is connected with the inner wall of the sliding block 23, and the other end of the first spring 32 is connected with the side surface of the moving block 26.

[0030] Specifically, in the braking state (when the motor is not started), the second spring 35 is tensioned to make the two brake blocks 31 spread outward, the side teeth are tightly engaged with the inner wall of the guide rail to form mechanical locking, and at this time, the first limiting block 33 leaves a gap with the inner wall of the sliding block 23 to avoid rigid contact. In the release process (when the motor is started), the moving block 26 moves with the threaded rod 22, first, the first spring 32 is used to push the sliding block 23 to idle, thereby eliminating the transmission gap, and when the moving block 26 continues to move, the second limiting block 34 contacts the inclined surface of the brake block 31 and pushes it to move inward against the tension of the second spring 35, until the brake block 31 completely separates from the inner wall of the guide rail, and when the moving block 26 moves, the first limiting block 33 abuts against the inner wall of the sliding block 23 to drive the sliding block 23 to move synchronously.

[0031] Working principle:

[0032] First, when the servo motor 21 is not started, the moving block 26 is kept in the initial position under the action of the first spring 32, the brake blocks 31 are away from each other under the action of the tension of the second spring 35, and the side surfaces abut against the inner wall of the guide rail body 1 to achieve brake locking and prevent the sliding block 23 from moving.

[0033] The servo motor 21 is started, and the output end drives the threaded rod 22 to rotate, because the inner wall of the moving block 26 is threadedly connected with the threaded rod 22, the threaded rod 22 rotates to make it move along the axial direction of the threaded rod 22, when the moving block 26 moves, the sliding block 23 is pushed by the first spring 32, with the threaded rod 22 continuing to rotate, the moving block 26 slides relative to the sliding block 23 to compress the first spring 32, at the same time, the second limiting block 34 pushes the brake block 31 to move relatively, overcomes the tension of the second spring 35, makes the side surface of the brake block 31 separate from the inner wall of the guide rail body 1, when the moving block 26 moves to a specific position, the first limiting block 33 abuts against the inner wall of the sliding block 23, the moving block 26 can push the sliding block 23 to move through the first limiting block 33, at the same time, the first roller 24 and the second roller 25 roll in the inner wall of the guide rail body 1, reduce the moving resistance of the sliding block 23, make the sliding block 23 slide along the inner wall of the guide rail body 1, realize linear motion, thus, the whole working process is ended.

[0034] The above front, rear, left, right, up, down are based on the Figure 1 of the drawings.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the protection scope of the present application.

[0036] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the described embodiments.

[0037] For those skilled in the art, various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and still fall within the protection scope of the present application.

Claims

1. A high-rigidity long-life linear guide rail comprising a guide rail main body (1), characterized by: The guide rail body (1) is internally provided with a moving assembly (2) and a brake assembly (3); The moving assembly (2) comprises a threaded rod (22), a sliding block (23), a first roller (24), a second roller (25) and a moving block (26), both ends of the threaded rod (22) are rotationally connected with the inner wall of the guide rail body (1), the side surface of the sliding block (23) is slidingly connected with the inner wall of the guide rail body (1), the side surface of the first roller (24) is rotationally connected with the side surface of the sliding block (23), the side surface of the second roller (25) is rotationally connected with the side surface of the sliding block (23), and the side surface of the moving block (26) is slidingly connected with the inner wall of the sliding block (23). The brake assembly (3) comprises a brake block (31), a first limiting block (33), a second limiting block (34) and a second spring (35), the lower end surface of the brake block (31) is slidingly connected with the upper end surface of the sliding block (23), both brake blocks (31) are connected with both ends of the second spring (35), one end of the first limiting block (33) is connected with the side surface of the moving block (26), one end of the second limiting block (34) is connected with the upper end surface of the moving block (26), and the side surface of the second limiting block (34) is slidingly connected with the side surface of the brake block (31).

2. The linear guide rail with high rigidity and long service life according to claim 1, characterized in that: The side surface of the guide rail body (1) is connected with a servo motor (21), and the output end of the servo motor (21) penetrates the inner wall of the guide rail and is connected with one end of the threaded rod (22).

3. The linear guide rail with high rigidity and long service life according to claim 1, characterized in that: The surface of the first roller (24) is rollingly connected with the inner wall of the guide rail body (1), and the surface of the second roller (25) is rollingly connected with the inner wall of the guide rail body (1).

4. The linear guide rail with high rigidity and long service life according to claim 1, characterized in that: The inner wall of the moving block (26) is threadedly connected with the surface of the threaded rod (22), and the inner wall of the sliding block (23) is slidingly connected with the surface of the threaded rod (22).

5. The linear guide rail with high rigidity and long service life according to claim 1, characterized in that: The surface of the threaded rod (22) is sleeved with a first spring (32), one end of the first spring (32) is connected with the inner wall of the sliding block (23), and the other end of the first spring (32) is connected with the side surface of the moving block (26).

6. The linear guide rail with high rigidity and long service life according to claim 1, characterized in that: The side surface of the brake block (31) abuts against the inner wall of the guide rail body (1), and the other end of the first limiting block (33) abuts against the inner wall of the sliding block (23).

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