Reaction cup gripper with simple structure

Abstract

A reaction cup gripper with a simple structure relates to the technical field of reaction cup grippers, and adopts the technical scheme that a connecting frame body is connected with two clamping jaws in a sliding manner; the motor is arranged on the connecting frame body, and an output shaft of the motor extends to the position between the two clamping jaws and is provided with a rotating arm. Connecting rods are arranged between the two clamping jaws and the rotating arm, and the two ends of each connecting rod are hinged to the corresponding clamping jaw and the rotating arm correspondingly. The rotating arm is driven by the motor to rotate, the two clamping jaws are driven by the connecting rod to slide face to face or back to back along the sliding groove, rotating motion is converted into linear motion, a main body structure is only provided with seven components, and compared with the prior art, the clamping device is simple in structure, stable and reliable in operation and convenient to maintain; whether the reaction cup is clamped or not is judged by detecting the current change of the motor, and the clamping load of the motor is reduced after the current change, so that the reaction cup is prevented from being damaged by clamping.

Description

Technical Field

[0001] The utility model relates to the technical field of reaction cup grippers, in particular to a reaction cup gripper with a simple structure. Background Art

[0002] Currently in in vitro diagnosis, for coagulation analyzers, the samples of the testing instrument are injected into the reaction cup through a needle. The reaction cup needs to be moved between various positions such as the mixing position, optical detection position, incubation plate, and magnetic bead detection position, and the movement of the reaction cup becomes a necessary choice. Therefore, the mobile device of the reaction cup is used frequently and has high requirements for stability. The clamping of the reaction cup needs to ensure stability and reliability, and the reaction cup cannot be clamped off. It is necessary to detect whether the reaction cup is clamped, etc., and the clamping claws need to be easy to maintain and cannot interfere with other modules during movement. At present, most of the grippers of the reaction cup have complex structures, and are prone to jamming and other phenomena, resulting in failure of clamping and grasping, which will cause the clamping work to be unstable and unreliable, inconvenient for maintenance and replacement, and a separate sensor is required to determine whether the reaction cup is clamped. Utility Model Content

[0003] In view of the problems that the reaction cup gripper in the prior art solution has a complex structure and is easy to get stuck, the utility model provides a reaction cup gripper with a simple structure.

[0004] The utility model provides the following technical solution: a reaction cup gripper with a simple structure, comprising:

[0005] A connecting frame body, wherein the connecting frame body is slidably connected to two clamping claws;

[0006] A motor, wherein the motor is arranged on the connecting frame, the motor output shaft extends between the two clamping jaws and is provided with a rotating arm;

[0007] A connecting rod is provided between the two clamping jaws and the rotating arm, and two ends of the connecting rod are respectively hinged to the clamping jaws and the rotating arm.

[0008] Preferably, the connecting frame is provided with a slide groove, and the two clamping claws are slidably connected to the slide groove.

[0009] Preferably, the motor is a stepper motor or a servo motor.

[0010] Preferably, reaction cup slots are provided on the sides of the two clamping jaws facing each other.

[0011] Preferably, the two connecting rods, the clamping claws and the rotating arms are symmetrical around the center of the motor output shaft.

[0012] Preferably, an optical coupling mounting plate is further provided on one side of the connecting frame, a photoelectric sensor is provided on one side of the optical coupling mounting plate, and one of the clamping jaws is provided with an optical coupling baffle corresponding to the photoelectric sensor.

[0013] Preferably, the connecting frame is also provided with a connecting sheet metal.

[0014] The beneficial effects of the utility model are as follows: the motor drives the rotating arm to rotate, and the connecting rod drives the two clamping claws to slide toward or away from each other along the slide groove, thereby converting the rotational motion into linear motion. The main structure has only 7 components, and compared with the prior art, the structure is simple, the operation is stable and reliable, and the maintenance is convenient. The change of the motor current is detected to determine whether to clamp, and the clamping load of the motor is reduced after the current changes, so as to avoid damaging the reaction cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional schematic diagram of an embodiment of a gripper.

[0016] Figure 2 An exploded schematic diagram of an embodiment of a gripper.

[0017] Figure numerals: 10, connecting frame; 11, connecting sheet metal; 20, clamping claw; 21, reaction cup slot; 30, motor; 40, rotating arm; 50, connecting rod; 61, optical coupling mounting plate; 62, photoelectric sensor; 63, optical coupling baffle. DETAILED DESCRIPTION

[0018] The following is a more detailed description of the implementation of the utility model in conjunction with the drawings and the figure marks, so that those skilled in the art can implement it after reading this specification. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0019] The utility model provides Figure 1-2 The cuvette gripper shown has a simple structure, and includes a connecting frame 10 , a clamping claw 20 , a motor 30 , a rotating arm 40 , and a connecting rod 50 .

[0020] In this embodiment, a slide groove with a T-shaped cross section is provided on one side of the connecting frame 10, and two clamping claws 20 are slidably connected to the slide groove. The two clamping claws 20 are provided with a reaction cup clamping groove 21 for clamping the edge of the reaction cup on one side facing each other to achieve the clamping function. A motor 30 is bolted to the other side of the connecting frame 10, and the output shaft of the motor 30 passes through the connecting frame 10 and extends between the two clamping claws 20 and is bolted to a rotating arm 40. The connecting frame 10 is connected by a sheet metal 11.

[0021] A connecting rod 50 is provided between the two clamping jaws 20 and the rotating arm 40, and the two ends of the connecting rod 50 are respectively hinged to the clamping jaws 20 and the rotating arm 40. The motor 30 drives the rotating arm 40 to rotate, and the connecting rod 50 drives the two clamping jaws 20 to slide toward or away from each other along the slide groove, thereby converting the rotary motion into a linear motion. The two connecting rods 50, the clamping jaws 20 and the rotating arm 40 are symmetrical around the output shaft of the motor 30, so that the two clamping jaws 20 have the same stroke. The main structure of the utility model has only 7 components, which is simple in structure compared with the prior art, stable and reliable in operation, and easy to maintain.

[0022] The motor 30 is a stepper motor or a servo motor, which can determine whether to clamp by detecting the change of the motor current, and reduce the clamping load of the motor after the current changes to avoid damaging the reaction cup.

[0023] An optical coupling mounting plate 61 is also provided on one side of the connecting frame 10, and a photoelectric sensor 62 is provided on one side of the optical coupling mounting plate 61. A clamping jaw 20 located on the same side as the photoelectric sensor 62 is provided with an optical coupling baffle 63 corresponding to the photoelectric sensor 62, so as to detect the initial position of the clamping jaw and facilitate resetting.

[0024] The above are one or more embodiments of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A reaction cup gripper with a simple structure, characterized in that: include A connecting frame body, wherein the connecting frame body is slidably connected to two clamping claws; A motor, wherein the motor is arranged on the connecting frame, the motor output shaft extends between the two clamping jaws and is provided with a rotating arm; A connecting rod is provided between the two clamping jaws and the rotating arm, and two ends of the connecting rod are respectively hinged to the clamping jaws and the rotating arm.

2. A simple-structured reaction cup gripper according to claim 1, characterized in that: The connecting frame is provided with a slide groove, and the two clamping claws are slidably connected with the slide groove.

3. A reaction cup gripper with a simple structure according to claim 1, characterized in that: The motor is a stepper motor or a servo motor.

4. A reaction cup gripper with a simple structure according to claim 1, characterized in that: The two clamping jaws are both provided with reaction cup slots on one side facing each other.

5. A reaction cup gripper with a simple structure according to claim 1, characterized in that: The two connecting rods, the clamping claws and the rotating arms are symmetrical around the center of the motor output shaft.

6. A simple-structured reaction cup gripper according to claim 1, characterized in that: An optical coupling mounting plate is also arranged on one side of the connecting frame, a photoelectric sensor is arranged on one side of the optical coupling mounting plate, and one of the clamping jaws is arranged with an optical coupling baffle corresponding to the photoelectric sensor.

7. A reaction cup gripper with a simple structure according to claim 1, characterized in that: The connecting frame is also provided with connecting sheet metal.

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