Reaction disc cleaning arm

Abstract

The utility model relates to a reaction disc cleaning arm which comprises a rack, a driving mechanism and a transmission mechanism. The machine frame comprises a base, a supporting plate and a table plate, and a cylindrical guide sleeve is installed on the table plate. The driving mechanism comprises a motor and a flat water-drop-shaped cam arranged on an output shaft of the motor, the motor is fixed to the back side of the supporting plate, and the output shaft of the motor penetrates through the supporting plate and then is fixedly connected with the cam; the transmission mechanism comprises a supporting rod, a limiting block arranged at the lower end of the supporting rod and a ball embedded in a ball groove in the bottom face of the limiting block. The supporting rod is installed in the guide sleeve in a penetrating mode, and the ball abuts against the side face of the cam. According to the reaction disc cleaning arm, the cam matched with the motor is adopted for driving, transmission and guide structure design matched with the driving mode is adopted, on the basis that the mechanical structure is simplified, the structural stability and the load bearing capacity in the running state are improved, and meanwhile maintenance and repair are convenient in subsequent use.

Description

Technical Field

[0001] The utility model relates to the technical field of biochemical instruments, in particular to a reaction disc cleaning arm used for controlling a cleaning needle assembly to clean a reaction disc. Background Art

[0002] The reaction plate cleaning mechanism is an important component of biochemical analysis instruments. Existing cleaning mechanisms are generally driven and controlled by stepper motors, using pulleys and belts to achieve the up and down movement of the cleaning needle. During the movement, the position of the cleaning needle is determined by an optical coupler. This belt-and-small-pulley transmission method has a relatively complex mechanical structure and can withstand a small load. After the cleaning needle is installed, the cleaning mechanism is unstable during the up and down movement, and has poor ability to withstand left and right shaking. In addition, the belt is prone to fatigue and aging after long-term use, and the installation and commissioning of the replacement belt requires high technical requirements from workers. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the pulley and belt-driven cleaning mechanisms of the existing biochemical analysis instruments, such as complex mechanical structure, small load-bearing capacity and unstable structure during movement, and to provide a reaction disk cleaning arm, which is driven by a cam matched with a motor, and a transmission and guide structure (support rod, guide sleeve) adapted to the drive form is designed, so that on the basis of simplifying the mechanical structure, the structural stability and load-bearing capacity in the running state are improved, and at the same time, it is easy to maintain and repair in subsequent use.

[0004] The reaction disk cleaning arm comprises a frame, a driving mechanism fixedly mounted on the frame, and a transmission mechanism movably mounted on the frame, wherein the driving mechanism drives the transmission mechanism to perform up and down reciprocating motions on the frame, wherein the frame is in a frame shape, comprising a base located at the bottom for connecting and fixing with a biochemical instrument, a support plate forming a vertical surface on the base, and a table plate forming a plane with the top of the support plate, wherein a cylindrical guide sleeve is mounted on the table plate; the driving mechanism comprises a motor and a flat teardrop-shaped cam arranged on the output shaft of the motor, wherein the motor is fixed on the back side of the support plate, and the output shaft of the motor is connected and fixed to the cam after passing through the support plate; the transmission mechanism comprises a support rod, a limit block arranged at the lower end of the support rod, and a ball embedded in a ball groove on the bottom surface of the limit block; the support rod is inserted into the guide sleeve, and the ball contacts the side of the cam.

[0005] Optimally, a convex spline is provided on the outer wall of the support rod, and a concave spline groove matching the convex spline is opened on the inside of the guide sleeve.

[0006] Optimally, a return spring is sleeved on the outside of the support rod, the upper end of the return spring is fixed on the guide sleeve, and the lower end of the return spring is connected to the lower block.

[0007] Optimally, the cam side surface is concave to form an arc groove matched with the ball.

[0008] Furthermore, a cleaning needle assembly is installed on the upper end of the support rod.

[0009] The utility model discloses a reaction disk cleaning arm, which overcomes the defects of the pulley and belt-driven cleaning mechanism of the existing biochemical analysis instrument, such as complex mechanical structure, small load-bearing capacity and unstable structure during movement. It adopts a cam drive matched with a motor, and designs a transmission and guide structure (support rod, guide sleeve) adapted to the drive form, so that the structural stability and load-bearing capacity in the running state are improved on the basis of simplifying the mechanical structure, and it is easy to maintain and repair in subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The following is a further description of a reaction disc cleaning arm of the utility model in conjunction with the accompanying drawings:

[0011] Figure 1 This is a schematic diagram of the main plane structure of the reaction disc cleaning arm;

[0012] Figure 2 yes Figure 1 A top view of the structure;

[0013] Figure 3 yes Figure 1 The three-dimensional structure diagram of

[0014] Figure 4 yes Figure 1 A partial right view planar structure diagram of the invention (cleaning needle assembly removed);

[0015] Figure 5 yes Figure 4 A top view of the structure;

[0016] Figure 6 yes Figure 4 Three-dimensional structure diagram.

[0017] In the figure:

[0018] 1-frame; 11-base, 12-support plate, 13-table plate, 14-guide sleeve;

[0019] 2-driving mechanism; 21-motor, 22-cam; 221-arc groove;

[0020] 3-transmission mechanism; 31-support rod, 32-limiting block, 33-ball, 34-reset spring; 311-convex spline;

[0021] 4- Clean the needle assembly. DETAILED DESCRIPTION

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the description of the present invention, it should be understood that the terms "left", "right", "front", "back", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] The technical solution of the utility model is further described below with specific embodiments, but the protection scope of the utility model is not limited to the following embodiments.

[0025] Implementation method 1: Figures 1 to 6 As shown, the reaction disk cleaning arm package frame 1, the driving mechanism 2 fixedly mounted on the frame 1, the transmission mechanism 3 movably mounted on the frame 1, the driving mechanism 2 drives the transmission mechanism 3 to perform up and down reciprocating motion on the frame 1, wherein the frame 1 is frame-shaped, including a base 11 located below for connecting and fixing with a biochemical instrument, a support plate 12 forming a vertical surface on the base 11, and a table 13 forming a plane with the top of the support plate 12, and a cylindrical guide sleeve 14 is installed on the table 13; The driving mechanism 2 includes a motor 21 and a flat teardrop-shaped cam 22 arranged on the output shaft of the motor 21. The motor 21 is fixed on the back side of the support plate 12. The output shaft of the motor 21 passes through the support plate 12 and is connected and fixed to the cam 22; the transmission mechanism 3 includes a support rod 31, a limit block 32 arranged at the lower end of the support rod 31, and a ball 33 embedded in the ball groove on the bottom surface of the limit block 32; the support rod 31 is installed in the guide sleeve 14, and the ball 33 abuts against the side of the cam 22.

[0026] Embodiment 2: The outer wall of the support rod 31 of the reaction disk cleaning arm is provided with a convex spline 311, and the guide sleeve 14 is provided with a concave spline groove adapted to the convex spline 311. It is used to prevent the support rod from deflecting along its own axis during the guiding process, thereby improving the running stability. A reset spring 34 is sleeved on the outside of the support rod 31, the upper end of the reset spring 34 is fixed on the guide sleeve 14, and the lower end of the reset spring 34 is connected to the lower block 32. The side of the cam 22 is concave to form an arc groove 221 adapted to the ball 33. The spring gives the support rod an overall downward reset force, so that the ball at the lower end of the support rod is always in contact with the cam arc groove. The remaining structures and components are as described in Embodiment 1 and will not be described again.

[0027] Embodiment 3: The cleaning needle assembly 4 is installed on the upper end of the support rod 31 of the reaction disk cleaning arm to form a complete cleaning structure. The remaining structures and components are as described in Embodiment 1 and will not be described again.

[0028] When in use: install and fix the reaction disc cleaning arm on the upper part of the support rod, and the motor is powered on to drive the cam to rotate. The height of the support rod will change with the rotation of the cam. The spring provides the downward pulling force required for the support rod to reset, so that the ball at the lower end of the support rod always sinks into and contacts the groove on the side edge of the cam, and rolls along the groove track, so that the support rod can move up and down under the restraint and guidance of the guide sleeve. When the support rod descends to the lowest point, it is the reaction disc cleaning position, and the cleaning needle assembly on the support rod cleans the reaction disc; when it ascends to the highest point, it is the cleaning completion position, and the cleaning needle assembly leaves the reaction disc.

[0029] The utility model discloses a reaction disk cleaning arm, which overcomes the defects of the pulley and belt-driven cleaning mechanism of the existing biochemical analysis instrument, such as complex mechanical structure, small load-bearing capacity and unstable structure during movement. It adopts a cam drive matched with a motor, and designs a transmission and guide structure (support rod, guide sleeve) adapted to the drive form, so that the structural stability and load-bearing capacity in the running state are improved on the basis of simplifying the mechanical structure, and it is easy to maintain and repair in subsequent use.

[0030] The above description shows the main features, basic principles, and advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments or embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, the above embodiments or embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A reaction disk cleaning arm, characterized in that: The invention comprises a frame (1), a driving mechanism (2) fixedly mounted on the frame (1), and a transmission mechanism (3) movably mounted on the frame (1), wherein the driving mechanism (2) drives the transmission mechanism (3) to perform upward and downward reciprocating motion on the frame (1), wherein: The frame (1) is frame-shaped and comprises a base (11) located at the bottom for connecting and fixing with a biochemical instrument, a support plate (12) forming a vertical surface on the base (11), and a table (13) forming a plane with the top of the support plate (12), wherein a cylindrical guide sleeve (14) is installed on the table (13); the driving mechanism (2) comprises a motor (21) and a flat teardrop-shaped cam (22) arranged on the output shaft of the motor (21), wherein the motor (21) 1) is fixed on the back side of a support plate (12), and the output shaft of a motor (21) passes through the support plate (12) and is connected and fixed to the cam (22); the transmission mechanism (3) comprises a support rod (31), a limit block (32) arranged at the lower end of the support rod (31), and a ball (33) embedded in a ball groove on the bottom surface of the limit block (32); the support rod (31) is inserted into the guide sleeve (14), and the ball (33) abuts against the side of the cam (22).

2. The reaction disk cleaning arm according to claim 1, characterized in that: The outer wall of the support rod (31) is provided with a convex spline (311), and the inside of the guide sleeve (14) is provided with a concave spline groove adapted to the convex spline (311).

3. The reaction disk cleaning arm according to claim 2, characterized in that: A return spring (34) is sleeved on the outside of the support rod (31), the upper end of the return spring (34) is fixed on the guide sleeve (14), and the lower end of the return spring (34) is connected to the limit block (32).

4. The reaction disk cleaning arm according to claim 3, characterized in that: The side surface of the cam (22) is concavely formed with an arc-shaped groove (221) adapted to the ball (33).

5. The reaction disk cleaning arm according to claim 4, characterized in that: A cleaning needle assembly (4) is mounted on the upper end of the support rod (31).

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