A turntable mechanism without gap or vibration

Abstract

The present application discloses a turntable mechanism without gaps and without shaking, including a motor, a driving disk, a turntable and a tray, wherein the motor is connected to the driving disk for driving the driving disk to rotate, the driving disk is connected to the turntable for driving the turntable to rotate, and the tray is arranged below the turntable for receiving the turntable. The turntable mechanism without gaps and without shaking provided by the present application can realize the drive of the turntable without gaps and without shaking, and the turntable can be taken down for convenient sample placement, which can provide convenience for a device to use multiple crucibles and sample layouts.

Description

Technical Field

[0001] The present application relates to the technical field of turntables, and in particular to a turntable mechanism without gaps or jitters. Background Art

[0002] Most existing turntable mechanisms use motor-driven gears or synchronous pulleys to drive the rotating shaft of the turntable. Since the outer diameter of the turntable is relatively large, the moment of inertia during rotation is relatively large. In order to accurately stop at the workstation, a relatively large transmission ratio is required to brake and stop it. For open-loop control systems, high precision cannot be achieved due to the large gap in the transmission. If a closed-loop rotation gap is used, it is difficult to adjust by rotation. In addition, if a motor is used to directly drive the turntable, the open-loop control system will not be able to brake due to the small driving force. If it is a closed-loop system, due to the large moment of inertia, it is very likely that the turntable will shake back and forth at the exact workstation and cannot stop at the exact position.

[0003] It can be seen that the existing solution is sufficient for production lines with low precision requirements, but it will cause sample jamming in the instrument industry with high precision requirements. The crucibles used for sample placement in the instrument industry are relatively small, and a relatively small deviation will lead to sampling failure. In addition, in order to increase the sample volume, the turntable needs to be enlarged to increase the number of samples in a single circle or increase the number of circles. The larger the turntable, the more the tiny gap at the shaft will be magnified.

[0004] Therefore, how to provide a high-precision, gap-free, and non-vibrating turntable mechanism is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a gapless and non-shaking turntable mechanism, which can realize gapless and non-shaking driving of the turntable, and the turntable can be taken down for easy sample placement, which can facilitate the use of multiple crucibles and sample layouts for one device.

[0006] The technical solution provided by the utility model is as follows:

[0007] A gapless and non-shaking turntable mechanism comprises a motor, a driving disk, a turntable and a tray, wherein the motor is connected to the driving disk for driving the driving disk to rotate, the driving disk is connected to the turntable for driving the turntable to rotate, and the tray is arranged below the turntable for receiving the turntable.

[0008] Preferably, the flat shaft of the motor is fixed to the hole of the driving disk by means of set screws.

[0009] Preferably, the set screw is coated with an anti-adhesion layer.

[0010] Preferably, the driving disk is connected to the rotating disk via a plurality of positioning posts located on the driving disk.

[0011] Preferably, the positioning column is connected to the waist hole on the turntable by means of transition fit.

[0012] Preferably, a grinding ring is provided between the turntable and the tray.

[0013] Preferably, a decorative cover is provided on the upper end of the driving disk.

[0014] Preferably, the motor is a closed-loop stepping structure.

[0015] The present application has the following advantages over the prior art:

[0016] The gapless and non-shaking turntable mechanism of the present application first drives the driving disk through a motor, and then the driving disk drives the turntable, which can ensure that there is almost no gap in rotation. The setting of the grinding ring can prevent the shaking problem in the closed-loop motor control process; at the same time, the structural setting of the present application allows the turntable to be taken down, which is convenient for sample placement, and can provide convenience for using a variety of crucibles and sample layouts for one device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a turntable mechanism without gaps and jitters in an embodiment of the utility model;

[0019] Figure 2 It is the damping principle diagram in the embodiment of the utility model.

[0020] Reference numerals:

[0021] 1. Motor; 2. Driving disc; 21. Positioning column; 3. Turntable; 4. Tray; 5. Grinding ring; 6. Decorative cover. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] like Figure 1 , 2As shown, an embodiment of the utility model provides a gapless and non-vibrating turntable mechanism, including a motor 1, a drive disk 2, a turntable 3 and a tray 4. The motor 1 is connected to the drive disk 2 for driving the drive disk 2 to rotate, the drive disk 2 is connected to the turntable 3 for driving the turntable 3 to rotate, and the tray 4 is arranged below the turntable 3 for receiving the turntable 3.

[0024] In this embodiment, the motor 1 is a closed-loop stepping structure. The motor 1 directly drives the drive disk 2, and the positioning column 21 on the drive disk 2 drives the turntable to rotate. The flat shaft of the motor 1 and the hole of the drive disk 2 are fixed by set screws. If the turntable 3 has frequent forward and reverse rotations, the set screws need to be coated with anti-retraction glue. The width of the positioning column 21 and the waist hole on the turntable 3 adopts a transition fit to ensure that there is no gap, so that it can be ensured that there is almost no gap during rotation. A decorative cover 6 is provided at the upper end of the drive disk 2. After twisting off the decorative cover 6, the turntable 3 can be taken out to facilitate cleaning of dust on the tray 4 and leaked samples.

[0025] In this embodiment, a grinding ring 5 is provided between the turntable 3 and the tray 4. The turntable 3 is supported by the grinding ring 5, and the positive pressure of the turntable 3 on the grinding ring 5 generates a friction force, which provides a torque opposite to the driving direction to the rotation, thereby playing a damping role, and this damping force is always constant (the friction force generated by the deadweight of the turntable 3 is used to provide damping, and the deadweight of the turntable 3 is constant); by changing the material of the grinding ring 5 and the position of contact with the turntable 3, the size of this damping can be controlled to adapt to the drive motor 1, and this method can prevent the jitter problem in the closed-loop motor control process.

[0026] The turntable mechanism realizes gap-free and non-vibrating driving of the turntable 3 through the structural form of this embodiment, and the turntable 3 can be taken down for easy sample placement, which provides convenience for using a variety of crucibles and sample layouts for one device.

[0027] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A turntable mechanism without gap or vibration, characterized in that: The invention comprises a motor (1), a driving disk (2), a rotating disk (3) and a tray (4); the motor (1) is connected to the driving disk (2) for driving the driving disk (2) to rotate; the driving disk (2) is connected to the rotating disk (3) for driving the rotating disk (3) to rotate; and the tray (4) is arranged below the rotating disk (3) for receiving the rotating disk (3).

2. The gapless and non-vibrating turntable mechanism according to claim 1, characterized in that: The flat shaft of the motor (1) and the hole of the driving disc (2) are fixed by means of set screws.

3. The gapless and non-vibrating turntable mechanism according to claim 2, characterized in that: The set screw is coated with an anti-adhesion layer.

4. The gapless and non-vibrating turntable mechanism according to claim 1, characterized in that: The driving disc (2) and the rotating disc (3) are connected via a plurality of positioning posts (21) located on the driving disc (2).

5. The gapless and non-vibrating turntable mechanism according to claim 4, characterized in that: The positioning column (21) is connected to the waist hole on the rotating disk (3) in a transition fit manner.

6. The gapless and non-vibrating turntable mechanism according to any one of claims 1 to 5, characterized in that: A grinding ring (5) is provided between the rotating disk (3) and the tray (4).

7. The gapless and non-vibrating turntable mechanism according to any one of claims 1 to 5, characterized in that: A decorative cover (6) is provided at the upper end of the driving disc (2).

8. The gapless and non-vibrating turntable mechanism according to any one of claims 1 to 5, characterized in that: The motor (1) is of a closed-loop stepping structure.

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