Guide rail motion control system based on linear magnetic grid sensor

Abstract

The utility model discloses a guide rail motion control system based on a linear magnetic grid sensor, and belongs to the technical field of linear driving mechanisms. A guide rail motion control system based on a linear magnetic grid sensor comprises a guide rail, a sliding block, a mounting frame, a magnetic grid ruler and a magnetic grid reading head. The sliding block is in sliding connection with the guide rail, the installation frame is installed below the guide rail, the magnetic railing ruler is fixedly installed on the installation frame, the magnetic railing reading head is installed on the installation frame in a sliding mode, the magnetic railing ruler is in clearance fit with the magnetic railing reading head, and a push rod is inserted into the sliding block and is in vertical insertion fit with the magnetic railing reading head. Power transmission between the sliding block and the magnetic grid reading head is achieved by arranging the push rod, the influence of self vibration of the sliding block on the magnetic grid reading head can be eliminated, the stability of the relative position of the magnetic grid reading head and the magnetic grid ruler is facilitated, collision damage of the magnetic grid reading head and the magnetic grid ruler is avoided, and the service life of the system is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of linear drive mechanisms, and more specifically, to a guide rail motion control system based on a linear magnetic grating sensor. Background Art

[0002] Guide rail motion control systems based on linear magnetic grating sensors offer high-precision, high-speed, and high-reliability motion control technology, widely used in industrial automation. These systems utilize linear magnetic grating sensors to precisely control the slider or other moving parts on the guide rail, meeting high-precision positioning requirements.

[0003] After searching, the existing patent document with publication number CN112682424A provides a digital linear guide rail. By embedding the magnetic strip into the guide rail, the sensor reader and the magnetic strip will not be damaged by friction. At the same time, it also avoids the situation where corrosive substances such as lubricating oil fall on the magnetic strip, causing damage to the metering mechanism or a significant reduction in its service life.

[0004] While the aforementioned device can isolate the sensor read head from the magnetic stripe, maintaining or replacing the stripe can be difficult because accessing it requires dismantling or destroying the guide rail structure, increasing installation cost and time. To address this, we propose a guide rail motion control system based on a linear magnetic grating sensor. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of the present utility model is to provide a guide rail motion control system based on a linear magnetic grating sensor to solve the problems raised in the above background technology.

[0007] 2. Technical solution

[0008] The utility model is realized through the following technical solutions:

[0009] A guide rail motion control system based on a linear magnetic grating sensor includes a guide rail, a slider, a mounting frame, a magnetic scale and a magnetic grating reader; the slider is slidably connected to the guide rail, the mounting frame is installed below the guide rail, the magnetic scale is fixedly installed on the mounting frame, the magnetic grating reader is slidably installed on the mounting frame, the magnetic scale and the magnetic grating reader are gap-fitted, a push rod is inserted into the slider, and the push rod is vertically plugged into the magnetic grating reader.

[0010] As an optional solution of the technical solution of this application document, the slider is slidably connected to the guide rail through a ball bearing.

[0011] As an optional solution to the technical solution of this application document, a shock-absorbing pad is fixedly installed at the lower part of the guide rail, and a hanging frame is fixedly installed at the lower part of the shock-absorbing pad. The guide rail and the hanging frame are elastically connected through the shock-absorbing pad, and the mounting frame is installed on the hanging frame.

[0012] As an optional solution of the technical solution of this application document, a transverse slide rail is fixedly connected to the hanging frame, the mounting frame is slidably connected to the transverse slide rail, and the mounting frame is fixed to the hanging frame by bolts.

[0013] As an optional solution to the technical solution of this application document, a longitudinal slide rail is fixedly connected to the mounting frame, a connecting piece is fixedly connected to one side of the magnetic grating reader, the connecting piece is slidably connected to the longitudinal slide rail, a U-shaped groove is provided on one side of the connecting piece, and the push rod is inserted into the U-shaped groove.

[0014] As an optional solution of the technical solution of this application document, the push rod is threadedly connected to the slider.

[0015] As an optional solution of the technical solution of this application document, a linear motor mover is installed inside the slider, and a linear motor stator is installed inside the guide rail.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This application realizes power transmission between the slider and the magnetic grating reader by setting a push rod, which can eliminate the influence of the slider's own vibration on the magnetic grating reader, is conducive to the stability of the relative position of the magnetic grating reader and the magnetic scale, avoids collision damage between the magnetic grating reader and the magnetic scale, and increases the service life of this system.

[0019] 2. This application can effectively absorb the vibration generated by the guide rail by setting a shock-absorbing pad between the guide rail and the hanging frame, and can install the mounting frame by setting a longitudinal slide rail at the bottom of the hanging frame, which can facilitate the user to maintain the magnetic grating reader and the magnetic scale, and setting the magnetic grating reader and the magnetic scale under the guide rail can reduce the contamination of the magnetic grating reader and the magnetic scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a guide rail motion control system based on a linear magnetic grating sensor;

[0021] Figure 2 This is a schematic diagram of the structure of a hoisting frame for a guide rail motion control system based on a linear magnetic grating sensor;

[0022] Figure 3 This is a schematic diagram of the mounting structure of a guide rail motion control system based on a linear magnetic grating sensor;

[0023] Figure 4 This is a schematic diagram of the connector structure of a guide rail motion control system based on a linear magnetic grating sensor;

[0024] In the figure: 1. Guide rail; 2. Slider; 3. Mounting frame; 301. Longitudinal slide rail; 4. Magnetic scale; 401. Connector; 5. Magnetic scale reader; 501. Connector; 502. U-shaped groove; 6. Push rod; 7. Shock pad; 8. Lifting frame; 801. Horizontal slide rail. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below with reference to the accompanying drawings.

[0026] See also Figure 1 The utility model provides a guide rail motion control system based on a linear magnetic grating sensor, comprising a guide rail 1, a slider 2, a mounting frame 3, a magnetic scale 4 and a magnetic grating reader 5; the slider 2 is slidably connected to the guide rail 1, preferably, the slider 2 is slidably connected to the guide rail 1 through a ball bearing, thereby increasing the smoothness of the movement of the slider 2 on the guide rail 1; a linear motor mover is installed inside the slider 2, and a linear motor stator is installed inside the guide rail 1, and an alternating magnetic field is generated between the linear motor mover and the linear motor stator, driving the slider 2 to reciprocate on the guide rail 1.

[0027] See also Figure 2 A shock-absorbing pad 7 is fixedly installed at the lower part of the guide rail 1, and a hanging bracket 8 is fixedly installed at the lower part of the shock-absorbing pad 7. The guide rail 1 and the hanging bracket 8 are elastically connected through the shock-absorbing pad 7. The shock-absorbing pad 7 absorbs the vibration generated when the slider 2 moves on the guide rail, preventing the vibration from being transmitted downward to the mounting bracket 3 installed at the lower part of the hanging bracket 8.

[0028] A transverse rail 801 is fixedly connected to the hoisting frame 8. The mounting frame 3 is slidably connected to the transverse rail 801. The mounting frame 3 and the hoisting frame 8 are fixed by bolts. The magnetic grating reader 5 is slidably mounted on the mounting frame 3. The magnetic scale 4 and the magnetic grating reader 5 are clearance-matched. A push rod 6 is inserted into the slider 2. Preferably, the push rod 6 is threadedly connected to the slider 2 to facilitate fixing the position of the push rod 6. The push rod 6 and the magnetic grating reader 5 are vertically plugged into each other. This design facilitates user maintenance of the magnetic scale 4 and the magnetic grating reader 5. The slider 2 drives the magnetic grating reader 5 relative to the magnetic scale 4 via the push rod 6. The magnetic grating reader 5 obtains displacement information of the slider 2, achieving precise control of the displacement of the slider 2. If the slider 2 vibrates during movement, the push rod 6 does not transmit the vibration to the magnetic grating reader 5, thereby maintaining the relative stability of the magnetic grating reader 5 and the magnetic scale 4 and preventing collision between the magnetic grating reader 5 and the magnetic scale 4.

[0029] See also Figure 3 and Figure 4The mounting frame 3 is fixedly connected to a longitudinal slide rail 301. A connector 501 is fixedly connected to one side of the magnetic grating reader 5. The connector 501 is slidably connected to the longitudinal slide rail 301. A U-shaped groove 502 is defined on one side of the connector 501, and the push rod 6 is inserted into the U-shaped groove 502. The push rod 6 can move vertically within the U-shaped groove 502, and the connector 501 can move horizontally relative to the push rod 6 along the direction of the U-shaped groove 502, making it easy to remove the connector 501.

Claims

1. A guide rail motion control system based on a linear magnetic grating sensor, characterized by: include: A guide rail (1), a slider (2), a mounting frame (3), a magnetic scale (4) and a magnetic scale reader (5); the slider (2) is slidably connected to the guide rail (1), the mounting frame (3) is mounted below the guide rail (1), the magnetic scale (4) is fixedly mounted on the mounting frame (3), the magnetic scale reader (5) is slidably mounted on the mounting frame (3), the magnetic scale (4) and the magnetic scale reader (5) are clearance-matched, a push rod (6) is inserted into the slider (2), and the push rod (6) and the magnetic scale reader (5) are vertically plug-fitted.

2. The guide rail motion control system based on a linear magnetic grating sensor according to claim 1, characterized in that: The slider (2) is slidably connected to the guide rail (1) via a ball bearing.

3. The guide rail motion control system based on a linear magnetic grating sensor according to claim 1, characterized in that: A shock-absorbing pad (7) is fixedly mounted on the lower portion of the guide rail (1), a hanging frame (8) is fixedly mounted on the lower portion of the shock-absorbing pad (7), the guide rail (1) and the hanging frame (8) are elastically connected via the shock-absorbing pad (7), and the mounting frame (3) is mounted on the hanging frame (8).

4. The guide rail motion control system based on a linear magnetic grating sensor according to claim 3, characterized in that: A transverse slide rail (801) is fixedly connected to the hanging frame (8), the mounting frame (3) is slidably connected to the transverse slide rail (801), and the mounting frame (3) and the hanging frame (8) are fixed by bolt connection.

5. The guide rail motion control system based on a linear magnetic grating sensor according to claim 1, characterized in that: A longitudinal slide rail (301) is fixedly connected to the mounting frame (3), a connecting piece (501) is fixedly connected to one side of the magnetic grating reader (5), the connecting piece (501) is slidably connected to the longitudinal slide rail (301), a U-shaped groove (502) is provided on one side of the connecting piece (501), and the push rod (6) is inserted into the U-shaped groove (502).

6. The guide rail motion control system based on a linear magnetic grating sensor according to claim 1, characterized in that: The push rod (6) is threadedly connected to the slider (2).

7. The guide rail motion control system based on a linear magnetic grating sensor according to claim 1, characterized in that: A linear motor mover is installed inside the slider (2), and a linear motor stator is installed inside the guide rail (1).

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