Disposable titration jig

Abstract

The utility model discloses a disposable titration jig which comprises a mounting plate, a pipe clamping jaw cylinder is fixed on the left side of the lower end face of the mounting plate, a pipe clamping fixture is mounted at the lower end of the pipe clamping jaw cylinder, the pipe clamping fixture is in contact with a dropper to realize clamping and fixing effects, and parallel electric jaws are further fixed on the lower end face of the mounting plate. The parallel electric claw is located on the right side of the pipe clamping claw air cylinder, a carrying clamp is installed on the parallel electric claw, and an extrusion clamp is installed on the carrying clamp. According to the disposable titration jig, the integrated fixture liquid squeezing mechanism is adopted, so that the clamping and automatic liquid squeezing effects of the dropper can be realized, the dependence of liquid sample titration of automatic equipment on expensive appliances is solved, and meanwhile, the problem of mutual pollution between samples is solved; and the device has the advantages of simple overall structure, small size, high clamping jaw utilization rate, strong compatibility, adjustable positioning precision, continuous operation and the like, and is suitable for wide popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a disposable titration fixture. Background Art

[0002] Existing liquid titration basically uses expensive pipettes, quantitative valves or peristaltic pumps. The pipette with a disposable pipette head can not only achieve high-precision titration but also prevent samples from contaminating each other. The disadvantages are high price, large size, complex automation operation, and inconvenience in use with other fixtures. The quantitative valve and peristaltic pump are moderately priced and have high precision. The disadvantage is that they cannot be applied to the pipetting of multiple samples or experimental samples that prohibit mixing and contamination due to the limitations of their working principles. Therefore, in response to the above problems, a disposable titration fixture is designed to better meet the actual use needs. Utility Model Content

[0003] The purpose of the utility model is to provide a disposable titration fixture to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a disposable titration fixture, comprising a mounting plate, a tube clamping claw cylinder is fixed on the left side of the lower end surface of the mounting plate, a tube clamp is installed on the lower end of the tube clamping claw cylinder, the tube clamp contacts with the dropper to achieve a clamping and fixing effect, a parallel electric claw is also fixed on the lower end surface of the mounting plate, the parallel electric claw is located on the right side of the tube clamping claw cylinder, a transport clamp is installed on the parallel electric claw, and an extrusion clamp is installed on the transport clamp.

[0005] Preferably, the tube clamp is symmetrically distributed about the center line of the tube clamp claw cylinder, and the tube clamp moves left and right under the action of the tube clamp claw cylinder. Through the action of the tube clamp, the dropper can be conveniently clamped and fixed.

[0006] Preferably, the distance between the clamping part at the lower end of the tube clamp and the tube clamping claw cylinder is greater than the length of the rubber head at the upper end of the dropper. By limiting the size of the tube clamp, normal liquid squeezing operation after the dropper is clamped can be guaranteed, thereby ensuring the normal operation of the device.

[0007] Preferably, the transport clamp is symmetrically distributed front and back about the center line of the extrusion clamp, and the clamping end of the transport clamp is located at the lower right side of the extrusion clamp. Through the action of the transport clamp, the transport operation can be realized to better meet the actual use requirements.

[0008] Preferably, the squeezing clamp is symmetrically distributed front and back about the center line of the dropper, and the clamping end of the squeezing clamp corresponds to the position of the rubber head of the dropper, and the width of the clamping end of the squeezing clamp is smaller than the distance between the left and right tube clamps. By limiting the size of the squeezing clamp, the normal operation of squeezing liquid from the dropper can be ensured.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the disposable titration fixture adopts an integrated clamp squeezing mechanism, which can realize the clamping and automatic squeezing of the dropper, solves the dependence of automated equipment on expensive instruments for liquid sample titration, and solves the problem of mutual contamination between samples. It has the advantages of simple overall structure, small size, high utilization rate of the clamp, strong compatibility, adjustable positioning accuracy, continuous operation, etc., and is suitable for wide promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the device of the utility model;

[0011] Figure 2 This is a schematic diagram of the overall front view structure of the device of the utility model;

[0012] Figure 3 This is a schematic diagram of the overall side view structure of the device of the utility model;

[0013] Figure 4 It is a schematic diagram of the overall structure of the device of the utility model when viewed from above.

[0014] In the figure: 1. Mounting plate; 2. Tube clamping jaw cylinder; 3. Tube clamp; 4. Dropper; 5. Parallel electric claw; 6. Handling clamp; 7. Extrusion clamp. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-Figure 4 The utility model provides a technical solution: a disposable titration fixture, including a mounting plate 1, a tube clamping claw cylinder 2 is fixed to the left side of the lower end surface of the mounting plate 1, a tube clamp 3 is installed at the lower end of the tube clamping claw cylinder 2, the tube clamp 3 is in contact with the dropper 4 to achieve a clamping and fixing effect, a parallel electric claw 5 is also fixed to the lower end surface of the mounting plate 1, the parallel electric claw 5 is located on the right side of the tube clamping claw cylinder 2, a transport clamp 6 is installed on the parallel electric claw 5, and a squeezing clamp 7 is installed on the transport clamp 6.

[0017] The tube clamp 3 is symmetrically distributed with respect to the center line of the tube clamp claw cylinder 2, and the tube clamp 3 moves left and right under the action of the tube clamp claw cylinder 2; the distance between the clamping part of the lower end of the tube clamp 3 and the tube clamp claw cylinder 2 is greater than the length of the rubber head at the upper end of the dropper 4; the transport clamp 6 is symmetrically distributed front and back with respect to the center line of the extrusion clamp 7, and the clamping end of the transport clamp 6 is located at the lower right side of the extrusion clamp 7; the extrusion clamp 7 is symmetrically distributed front and back with respect to the center line of the dropper 4, and the clamping end of the extrusion clamp 7 corresponds to the rubber head position of the dropper 4, and the width of the clamping end of the extrusion clamp 7 is less than the distance between the left and right tube clamps 3;

[0018] When using this disposable titration fixture, Figure 1-Figure 4 As shown, firstly, the mounting plate 1 is mounted on the robot arm. During the use of the device, the parallel electric claws 5 are used to drive the transport clamps 6 to move, so that the distance between the two transport clamps 6 can be adjusted to achieve the clamping and transportation of the material. When taking the sample liquid, the clamping clamp 3 can be driven to move by the clamping claw cylinder 2 to achieve the clamping and fixing effect of the dropper 4. Then, the dropper 4 is moved into the sample bottle so that the lower end of the dropper 4 is extended into the sample liquid. Then, the transport clamp 6 and the extrusion clamp 7 are driven to move by controlling the parallel electric claws 5. The squeezing fixture 7 can pressurize the rubber head on the upper end of the dropper 4, and after squeezing to the limit position, the squeezing fixture 7 is separated from the rubber head on the upper end of the dropper 4. At this time, under the elastic action of the rubber head on the upper end of the dropper 4 itself, automatic liquid absorption can be achieved. After the liquid absorption is completed, the device is moved to the top of the test bottle by the mechanical arm, and the squeezing fixture 7 is slowly controlled to move. Pressure is slowly applied to the rubber head on the upper end of the dropper 4 through the squeezing fixture 7. At this time, the liquid in the dropper 4 will drip out drop by drop, thereby completing the titration operation. This is the working principle of the disposable titration fixture.

[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disposable titration fixture, comprising a mounting plate (1), characterized in that: A tube clamping claw cylinder (2) is fixed on the left side of the lower end surface of the mounting plate (1), and a tube clamp (3) is installed on the lower end of the tube clamping claw cylinder (2). The tube clamp (3) contacts with the dropper (4) to achieve a clamping and fixing effect. A parallel electric claw (5) is also fixed on the lower end surface of the mounting plate (1), and the parallel electric claw (5) is located on the right side of the tube clamping claw cylinder (2). A transport clamp (6) is installed on the parallel electric claw (5), and a pressing clamp (7) is installed on the transport clamp (6).

2. A disposable titration fixture according to claim 1, characterized in that: The tube clamp (3) is symmetrically distributed with respect to the center line of the tube clamp claw cylinder (2), and the tube clamp (3) moves left and right under the action of the tube clamp claw cylinder (2).

3. A disposable titration fixture according to claim 1, characterized in that: The distance between the clamping part at the lower end of the pipe clamp (3) and the pipe clamp claw cylinder (2) is greater than the length of the rubber head at the upper end of the dropper (4).

4. A disposable titration fixture according to claim 1, characterized in that: The transport clamp (6) is symmetrically distributed frontward and rearward with respect to the center line of the extrusion clamp (7), and the clamping end of the transport clamp (6) is located at the lower right side of the extrusion clamp (7).

5. A disposable titration fixture according to claim 1, characterized in that: The extrusion clamp (7) is symmetrically distributed front and back about the center line of the dropper (4), and the clamping end of the extrusion clamp (7) corresponds to the rubber head position of the dropper (4), and the width of the clamping end of the extrusion clamp (7) is smaller than the distance between the left and right tube clamps (3).

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