Control mechanism capable of conveniently controlling reagent arm to do horizontal movement and vertical movement

Abstract

The utility model discloses a control mechanism capable of conveniently controlling a reagent arm to do horizontal movement and vertical movement, and relates to the technical field of rod piece displacement control, the control mechanism is arranged on a rack of equipment, and the reagent arm is arranged at an execution end of the control mechanism; the control mechanism is used for controlling switching of horizontal displacement and vertical displacement of the reagent arm. The reagent arm can do horizontal movement and vertical movement through one mechanism, switching between the horizontal movement and the vertical movement can be achieved, and lightweight design is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rod displacement control, in particular to a control mechanism for conveniently controlling a reagent arm to perform horizontal and vertical movements. Background Art

[0002] During environmental testing experiments, it is usually necessary to inject different reagents into sample bottles containing samples so that the reagents and samples react. Today, the field of environmental testing has gradually transitioned from traditional manual operations to the use of automated scientific instruments and equipment to automatically complete testing, and the step of adding reagents or samples has also been replaced by automated robotic arms. In some cases, the robotic arm needs to complete the task of adding reagents or samples, which requires at least two movements. First, the robotic arm needs to move to the top of the container, then move downward to insert the syringe into the container, and finally add the reagent to the container. If there is no downward movement to insert the syringe into the container, there is a risk of reagent splashing, which can lead to inaccurate reagent filling and contamination of the internal environment of the instrument.

[0003] Traditional robotic arms usually require two motors to complete these two actions respectively, which results in a more complicated structure, larger size and weight, low movement efficiency, and numerous components, resulting in high maintenance costs and high failure rates.

[0004] Therefore, a control mechanism is proposed to facilitate the control of the horizontal and vertical movements of the reagent arm. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a control mechanism that is convenient for controlling the horizontal and vertical movements of a reagent arm.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A control mechanism is provided for controlling the horizontal and vertical movement of a reagent arm. The control mechanism is arranged on a frame of the equipment, and the reagent arm is arranged at the execution end of the control mechanism. The control mechanism is used to control the switching of the horizontal and vertical displacements of the reagent arm.

[0008] Furthermore, in the present invention, the above-mentioned control mechanism includes a horizontal bar arranged on the above-mentioned frame, a vertical bar slidably connected to the above-mentioned horizontal bar, a first sleeve slidably connected to the above-mentioned vertical bar and a driving mechanism arranged on the above-mentioned frame, the central axis of the above-mentioned horizontal bar and the sliding direction of the above-mentioned vertical bar are parallel to the horizontal direction, and the central axis of the above-mentioned vertical bar is perpendicular to the horizontal direction; the execution end of the above-mentioned driving mechanism is hinged to the above-mentioned first sleeve; the above-mentioned reagent arm is connected to the above-mentioned first sleeve.

[0009] Furthermore, in the present utility model, the driving mechanism includes a motor arranged on the frame, a second sleeve arranged on the driving end of the motor, a push rod slidably connected to the second sleeve, and a spring sleeved on the push rod, and the motor is located below the cross bar; one end of the push rod away from the second sleeve is hinged to the first sleeve; a limiting ring is fixedly provided on the end of the push rod away from the second sleeve, one end of the spring is connected to the second sleeve, and the other end is connected to the limiting ring.

[0010] Furthermore, in the present invention, both ends of the horizontal rod and one end of the vertical rod away from the horizontal rod are provided with limiting bosses.

[0011] Furthermore, in the present invention, the vertical rod is slidably connected to the horizontal rod via a sliding sleeve.

[0012] Furthermore, in the present invention, a limit rod is provided on the cross bar, and the central axis of the limit rod is parallel to the central axis of the cross bar; the sliding sleeve is sleeved on the cross bar, and a limit groove adapted to the limit rod is provided in the sliding sleeve.

[0013] The beneficial effects of the utility model are:

[0014] The utility model provides a control mechanism which is convenient for controlling the reagent arm to perform horizontal and vertical movements. The reagent arm can perform horizontal and vertical movements through one mechanism and can switch between the two, thereby realizing a lightweight design. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the reagent arm of an embodiment of the present utility model when it is in the left extreme position in the horizontal direction;

[0016] Figure 2 This is a schematic structural diagram of the reagent arm of an embodiment of the present utility model when it is in the right extreme position in the horizontal direction;

[0017] Figure 3 This is a schematic structural diagram of the reagent arm of an embodiment of the present utility model when it is at the lower limit position in the vertical direction.

[0018] In the figure: 101-frame; 201-reagent arm; 202-injection tube; 301-cross bar; 302-vertical bar; 303-first sleeve; 304-motor; 305-second sleeve; 306-push rod; 307-spring; 401-sliding sleeve; 501-limiting rod; 601-partition; 602-through hole. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0020] See also Figure 1-3 , the utility model provides a technical solution:

[0021] A control mechanism is provided for conveniently controlling the horizontal and vertical movement of a reagent arm. The reagent arm 201 and the control mechanism are installed on a fully automatic total phosphorus and total nitrogen analyzer in actual use and are used to add reagents to relevant reagent bottles.

[0022] Specifically, the control mechanism is installed on the frame 101 of the device, and the reagent arm 201 is installed on the execution end of the control mechanism. A partition 601 is also installed on the frame 101, which separates the reagent arm 201 from the sample bottle containing the sample. A through hole 602 for the reagent arm 201 to pass through is provided on the partition 601, which facilitates the passage of the reagent arm 201. Figure 1 As shown, when reagent needs to be added to the sample bottle on the right side of the partition 601, the control mechanism first controls the reagent arm 201 to move to the right. When the injection tube 202 on the reagent arm 201 is located on the right side of the partition 601 and directly above the sample bottle, the reagent arm 201 is controlled to move downward until the injection tube 202 extends into the sample bottle.

[0023] Specifically, in this embodiment, the control mechanism includes a horizontal bar 301 installed on the frame 101, a vertical bar 302 slidably connected to the horizontal bar 301, a first sleeve 303 slidably connected to the vertical bar 302, and a driving mechanism installed on the frame 101. The central axis of the horizontal bar 301 and the sliding direction of the vertical bar 302 are both parallel to the horizontal direction, and the central axis of the vertical bar 302 is perpendicular to the horizontal direction; the execution end of the driving mechanism is hinged to the first sleeve 303; the reagent arm 201 is connected to the first sleeve 303. The driving mechanism includes a motor 304 installed on the frame 101, a second sleeve 305 installed on the driving end of the motor 304, a push rod 306 slidingly connected to the second sleeve 305 and a spring 307 sleeved on the push rod 306, and the motor 304 is located below the cross bar 301; the end of the push rod 306 away from the second sleeve 305 is hinged to the first sleeve 303; the end of the push rod 306 away from the second sleeve 305 is fixedly installed with a limiting ring, one end of the spring 307 is connected to the second sleeve 305, and the other end is connected to the limiting ring.

[0024] During design, the operating parameters of the motor 304 can be designed according to the stroke of the reagent arm 201 so that the motor 304 can only control the push rod 306 to swing back and forth within a certain angle range. Simultaneously, the rotating speed of the motor 304 needs to be controlled so that this mechanism can work stably.

[0025] The spring 307 here has two functions: first, to prevent the push rod 306 from separating from the second sleeve 305; second, to alternately store and release energy during the rotation of the push rod 306, facilitating the push rod 306's movement of the first sleeve 303 to its three limit positions. Specifically, as the first sleeve 303 moves from the left limit position to a position where the push rod 306's central axis is parallel to the vertical direction, the spring 307 is compressed and gradually stores energy. When the push rod 306 rotates until its central axis is parallel to the vertical direction, the spring 307 is compressed to its minimum during the horizontal movement of the vertical rod 302. When the first sleeve 303 passes this position and moves toward the right limit position in the horizontal direction, the spring 307 releases energy, and the elastic force of the spring 307 facilitates the movement of the first sleeve 303 to the right limit position. The elastic force of the spring 307 changes during the up and down movement of the first sleeve 303 on the vertical rod 302 in the same manner as described above.

[0026] In other implementations of this embodiment, the control mechanism may also use a PPU mechanism to control the horizontal and vertical displacements of the reagent arm 201 .

[0027] In order to prevent the vertical rod 302 and the first sleeve 303 from being separated from the cross rod 301 and the vertical rod 302 respectively, a limiting boss is installed at both ends of the cross rod 301 and the end of the vertical rod 302 away from the cross rod 301.

[0028] In this embodiment, the vertical rod 302 is slidably connected to the crossbar 301 via a sliding sleeve 401. Furthermore, to prevent radial rotation of the sliding sleeve 401 about the central axis of the crossbar 301 as it moves left and right on the crossbar 301, a limiting rod 501 is mounted on the crossbar 301, with the central axis of the limiting rod 501 parallel to the central axis of the crossbar 301. The sliding sleeve 401 is mounted on the crossbar 301 and has a limiting groove formed therein that mates with the limiting rod 501. The limiting groove and limiting rod 501 cooperate to restrict radial rotation of the sliding sleeve 401 about the central axis of the crossbar 301.

[0029] Working principle:

[0030] Reference Figure 1 When it is not necessary to add reagent into the sample bottle, the reagent arm 201 can be located on the left side of the partition 601.

[0031] Reference Figure 1-Figure 3When the reagent needs to be added to the sample bottle, the motor 304 works, causing the push rod 306 to rotate clockwise. The first sleeve 303 moves to the right under the action of the push rod 306, and at the same time drives the vertical rod 302 to move to the right. When the push rod 306 rotates until its own axis is parallel to the vertical direction, the spring 307 is compressed to the shortest during the left and right movement of the vertical rod 302. Then the push rod 306 continues to rotate clockwise. When the push rod 306 rotates to Figure 2 When the vertical rod 302 moves to the right limit position, the syringe 202 on the reagent arm 201 is located to the right of the partition 601 and directly above the sample bottle. Then the push rod 306 continues to rotate clockwise, causing the first sleeve 303 to move downward. The first sleeve 303 then drives the syringe 202 on the reagent arm 201 to slowly extend into the sample bottle to complete the reagent filling process.

[0032] After the filling is completed, the push rod 306 is rotated counterclockwise so that the reagent arm 201 is located on the left side of the partition 601.

[0033] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the concept described herein through the above teachings or techniques or knowledge in the relevant fields. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A control mechanism for controlling the horizontal and vertical movement of a reagent arm, characterized by: A control mechanism is arranged on a frame (101) of the device, and a reagent arm (201) is arranged on an execution end of the control mechanism; the control mechanism is used to control the switching between horizontal displacement and vertical displacement of the reagent arm (201); the control mechanism comprises a crossbar (301) arranged on the frame (101), a vertical bar (302) slidably connected to the crossbar (301), a first sleeve (303) slidably connected to the vertical bar (302), and a driving mechanism arranged on the frame (101); the central axis of the crossbar (301) and the sliding direction of the vertical bar (302) are both parallel to the horizontal direction, and the central axis of the vertical bar (302) is perpendicular to the horizontal direction; the execution end of the driving mechanism is hinged to the first sleeve (303); and the reagent arm (201) is connected to the first sleeve (303).

2. A control mechanism for controlling the horizontal and vertical movement of a reagent arm according to claim 1, characterized in that: The driving mechanism comprises a motor (304) arranged on the frame (101), a second sleeve (305) arranged at the driving end of the motor (304), a push rod (306) slidably connected to the second sleeve (305), and a spring (307) sleeved on the push rod (306), wherein the motor (304) is located below the cross bar (301); one end of the push rod (306) away from the second sleeve (305) is hinged to the first sleeve (303); a limiting ring is fixedly provided at one end of the push rod (306) away from the second sleeve (305), and one end of the spring (307) is connected to the second sleeve (305), and the other end is connected to the limiting ring.

3. A control mechanism for controlling the horizontal and vertical movement of a reagent arm according to claim 2, characterized in that: Both ends of the crossbar (301) and one end of the vertical bar (302) away from the crossbar (301) are provided with limiting bosses.

4. A control mechanism for controlling the horizontal and vertical movement of a reagent arm according to claim 1, characterized in that: The vertical rod (302) is slidably connected to the horizontal rod (301) via a sliding sleeve (401).

5. A control mechanism for controlling the horizontal and vertical movement of a reagent arm according to claim 4, characterized in that: A limiting rod (501) is provided on the cross bar (301), and the central axis of the limiting rod (501) is parallel to the central axis of the cross bar (301); the sliding sleeve (401) is sleeved on the cross bar (301), and a limiting groove adapted to the limiting rod (501) is provided in the sliding sleeve (401).

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