Automatic sample application positioning device for thin layer chromatography plates

Abstract

The utility model discloses a thin layer chromatography plate automatic sample application positioning device relates to chemical analysis experimental equipment field, the threaded cylinder is fixedly connected first magnetic block one end away from the mouth, first magnetic block lower end magneticity connects second magnetic block, second magnetic block lower end passes through bearing swing joint elasticity telescopic link, elasticity telescopic link output fixed connection screw rod, the utility model has the beneficial effect that: through setting first magnetic block and the magneticity connection of second magnetic block, thereby can carry out primary location when installing, through the elasticity telescopic link of threaded cylinder and bearing swing joint, the quick connection of facilitating when screw rod screw connection, increase the overall efficiency of connection, the convenient use of dismounting in later period, through setting electric telescopic link and first sliding slot and slider convenient drive sample application head and carry out first direction movement, through the meshing effect of gear and rack plate and carry out second direction movement, convenient to different positions and carry out sample application positioning use.

Description

Technical Field

[0001] This utility model relates to the field of chemical analysis experimental equipment, specifically an automatic spotting and positioning device for thin-layer chromatography plates. Background Technology

[0002] In thin-layer chromatography analysis experiments, accurate spotting positioning plays a crucial role in the reliability of experimental results. Existing automatic spotting positioning devices for thin-layer chromatography plates have some defects in mechanical connection structure. For example, the connection between the spotting head and the transmission component is not stable enough. During long-term use or high-speed spotting, it is easy to loosen, resulting in spotting position deviation. Moreover, it cannot be quickly disassembled and used when replacing. Utility Model Content

[0003] The purpose of this invention is to provide an automatic spotting and positioning device for thin-layer chromatography plates to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic spotting and positioning device for thin-layer chromatography plates, comprising a threaded cylinder and a mounting frame, wherein a first magnetic block is fixedly connected to the end of the threaded cylinder away from the opening, a second magnetic block is magnetically connected to the lower end of the first magnetic block, an elastic telescopic rod is rotatably connected to the lower end of the second magnetic block via a bearing, a screw is fixedly connected to the output end of the elastic telescopic rod, the screw is threadedly connected inside the threaded cylinder, and a spotting head is fixedly connected to the lower end of the screw.

[0005] Preferably, a first sliding groove is formed on the inner wall of both sides of the mounting frame, an electric telescopic rod is fixedly connected to one side of the mounting frame, the output end of the electric telescopic rod is fixedly connected to the mounting plate, and sliding rods are fixedly connected to both sides of the mounting plate.

[0006] Preferably, a second slide groove is formed on the side of the mounting plate away from the electric telescopic rod. The mounting plate located at the upper end of the second slide groove is fixedly connected to a stepper motor via a bracket. A gear is fixedly connected to the output end of the stepper motor. The lower end of the gear meshes with a rack plate. A slide plate is fixedly connected to the side of the rack plate near the second slide groove. The slide plate is slidably connected within the second slide groove, and the lower end of the rack plate is fixedly connected to a threaded cylinder.

[0007] Preferably, the side of the slide rod away from the mounting plate extends into the first slide groove, and the slide rod is slidably connected within the first slide groove.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting the magnetic connection between the first magnetic block and the second magnetic block, the initial positioning can be achieved during installation. At the same time, the elastic telescopic rod connected by the threaded cylinder and the bearing facilitates quick connection during screw thread connection, increasing the overall connection efficiency and making it easy to disassemble and use later. The electric telescopic rod, the first slide groove, and the slider facilitate the movement of the sampling head in the first direction, and the second direction movement is achieved through the meshing of the gear and rack plate, which facilitates the sampling and positioning at different positions. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0010] Figure 2 This is a cross-sectional view of the threaded cylinder of this utility model;

[0011] Figure 3 This is a first cross-sectional view of the mounting bracket of this utility model;

[0012] Figure 4 This is a second sectional view of the mounting bracket of this utility model;

[0013] Figure 5 This is a schematic diagram of the connection structure between the mounting plate and the rack plate in this utility model.

[0014] In the diagram: 1. Threaded cylinder; 2. Mounting bracket; 3. First magnetic block; 4. Second magnetic block; 5. Elastic telescopic rod; 6. Screw; 7. Dotting head; 8. First slide groove; 9. Electric telescopic rod; 10. Mounting plate; 11. Slide rod; 12. Second slide groove; 13. Stepper motor; 14. Gear; 15. Rack plate; 16. Slide plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5 This utility model provides a technical solution:

[0017] Example 1: An automatic spotting and positioning device for thin-layer chromatography plates includes a threaded cylinder 1 and a mounting frame 2. First grooves 8 are formed on the inner walls of both sides of the mounting frame 2. An electric telescopic rod 9 is fixedly connected to one side of the mounting frame 2. A mounting plate 10 is fixedly connected to the output end of the electric telescopic rod 9. Slide rods 11 are fixedly connected to both sides of the mounting plate 10. A second groove 12 is formed on the side of the mounting plate 10 away from the electric telescopic rod 9. A stepper motor 13 is fixedly connected to the upper end of the mounting plate 10 via a bracket. A gear 14 is fixedly connected to the output end of the stepper motor 13. A rack plate 15 is meshed with the lower end of the gear 14. A sliding plate 16 is fixedly connected to the side of the rack plate 15 closest to the second groove 12. The sliding plate 16 is slidably connected within the second groove 12, and the lower end of the rack plate 15 is fixedly connected to the threaded cylinder 1. The slide rods 11 extend into the first groove 8 from the side away from the mounting plate 10, and are slidably connected within the first groove 8.

[0018] In use, when it is necessary to position moving points in different directions, the electric telescopic rod 9 is started by an external power source. The output end of the electric telescopic rod 9 pushes the mounting plate 10. The mounting plate 10 moves stably under the force and with the sliding limit action of the first sliding groove 8 and the sliding rod 11, thereby adjusting the position in the first direction. At the same time, the stepper motor 13 is started by an external power source. The output end of the stepper motor 13 drives the gear 14 to rotate. When the gear 14 rotates, it meshes and drives the rack plate 15. The rack plate 15 moves in the second direction under the force and with the sliding limit action of the second sliding groove 12 and the sliding plate 16, thereby adjusting the positioning of the moving points in different directions.

[0019] Example 2: The technical solution of this example, which differs from that of Example 1, is as follows: the end of the threaded cylinder 1 away from the opening is fixedly connected to the first magnetic block 3, the lower end of the first magnetic block 3 is magnetically connected to the second magnetic block 4, the lower end of the second magnetic block 4 is rotatably connected to the elastic telescopic rod 5 through a bearing, the output end of the elastic telescopic rod 5 is fixedly connected to the screw 6, the screw 6 is threaded inside the threaded cylinder 1, and the lower end of the screw 6 is fixedly connected to the sampling head 7.

[0020] When using the sample head 7, first insert the screw 6 into the threaded cylinder 1 through the sample head 7. When the screw 6 rises, it drives the second magnetic block 4 to magnetically connect to the first magnetic block 3 through the elastic telescopic rod 5, thereby initially limiting the position of the sample head 7. At this time, rotate the screw 6. Under the threaded fastening action of the screw 6 and the threaded cylinder 1, the screw 6 rises continuously through the thread. When the screw 6 is inside the threaded cylinder 1, it continuously compresses the elastic telescopic rod 5 under the action of the bearing, thereby quickly limiting the position of the sample head 7 for installation and use.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic spotting and positioning device for thin-layer chromatography plates, comprising a threaded cylinder (1) and a mounting bracket (2), characterized in that: The threaded cylinder (1) is fixedly connected to a first magnetic block (3) at one end away from the opening. The lower end of the first magnetic block (3) is magnetically connected to a second magnetic block (4). The lower end of the second magnetic block (4) is rotatably connected to an elastic telescopic rod (5) via a bearing. The output end of the elastic telescopic rod (5) is fixedly connected to a screw (6). The screw (6) is threaded inside the threaded cylinder (1). The lower end of the screw (6) is fixedly connected to a sampling head (7).

2. The automatic spotting and positioning device for thin-layer chromatography plates according to claim 1, characterized in that: The mounting bracket (2) has a first sliding groove (8) on both inner walls. An electric telescopic rod (9) is fixedly connected to one side of the mounting bracket (2). The output end of the electric telescopic rod (9) is fixedly connected to the mounting plate (10). Sliding rods (11) are fixedly connected to both sides of the mounting plate (10).

3. The automatic spotting and positioning device for thin-layer chromatography plates according to claim 2, characterized in that: The mounting plate (10) has a second slide groove (12) on the side away from the electric telescopic rod (9). The mounting plate (10) located at the upper end of the second slide groove (12) is fixedly connected to a stepper motor (13) by a bracket. The output end of the stepper motor (13) is fixedly connected to a gear (14). The lower end of the gear (14) is meshed with a rack plate (15). The rack plate (15) is fixedly connected to a sliding plate (16) on the side near the second slide groove (12). The sliding plate (16) is slidably connected in the second slide groove (12), and the lower end of the rack plate (15) is fixedly connected to the threaded cylinder (1).

4. The automatic spotting and positioning device for thin-layer chromatography plates according to claim 2, characterized in that: The slide rod (11) extends into the first slide groove (8) on the side away from the mounting plate (10), and the slide rod (11) is slidably connected in the first slide groove (8).

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