Liquid suction needle module

Abstract

The utility model discloses a liquid suction needle module which comprises a first unit and a second unit. The first unit comprises a first power source, a first belt transmission mechanism, a first lead screw nut mechanism and a guide rail mechanism, the output end of the first power source is connected with the first belt transmission mechanism, and the first belt transmission mechanism is connected with the first lead screw nut mechanism; a nut of the first lead screw nut mechanism is connected with a sliding block of the guide rail mechanism; the second unit is connected with the sliding block of the guide rail mechanism and comprises a second power source, a second belt transmission mechanism, a second lead screw nut mechanism and a plunger liquid suction mechanism. The liquid suction needle module is provided with the two units, the second unit is used for driving the plunger liquid suction mechanism to achieve liquid suction and liquid prevention, the first unit is used for driving the second unit to achieve Z-axis movement, the structural layout of the liquid suction needle module can be optimized, the thickness of the liquid suction needle module can be reduced, and the liquid suction needle module can be conveniently arranged.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid aspiration needles, in particular to a liquid aspiration needle module. Background Art

[0002] The existing pipette needle modules generally need to be arranged in parallel in multiple places. However, the existing pipette needle modules are easily restricted when arranged in parallel due to the problem of excessive thickness, and cannot meet the use requirements well. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art, meet corresponding usage requirements, and provide a liquid aspiration needle module.

[0004] The technical solution of the present utility model is as follows: The present utility model provides a liquid aspiration needle module, comprising: a first unit and a second unit;

[0005] The first unit includes: a first power source, a first belt transmission mechanism, a first screw-nut mechanism, and a guide rail mechanism, wherein the output end of the first power source is connected to the first belt transmission mechanism, the first belt transmission mechanism is connected to the first screw-nut mechanism, and the nut of the first screw-nut mechanism is connected to the slider of the guide rail mechanism;

[0006] The second unit is connected to the slider of the guide rail mechanism, and the second unit includes: a second power source, a second belt transmission mechanism, a second screw nut mechanism and a plunger suction mechanism. The output end of the second power source is connected to the second belt transmission mechanism, the second belt transmission mechanism is connected to the second screw nut mechanism, the second screw nut mechanism is set in the same direction as the first screw nut mechanism, and the nut of the second screw nut mechanism is connected to the plunger rod of the plunger suction mechanism.

[0007] Furthermore, the first power source is a reduction motor.

[0008] Furthermore, the first belt transmission mechanism includes: a first driving wheel, a first transmission belt and a first driven wheel, the first transmission belt connects the first driving wheel and the first driven wheel, the first driving wheel is connected to the output end of the first power source, the first driven wheel is coaxially connected to the screw of the first screw-nut mechanism, and the nut of the first screw-nut mechanism is connected to the second unit through a connecting member.

[0009] Furthermore, the second belt transmission mechanism includes: a second driving wheel, a second transmission belt and a second driven wheel, the second transmission belt connects the second driving wheel and the second driven wheel, the second driving wheel is connected to the output end of the second power source, and the second driven wheel is coaxially connected to the screw of the second screw-nut mechanism.

[0010] By adopting the above scheme, the beneficial effect of the utility model is that: the pipette needle module is set as two units, wherein the second unit is used to drive the plunger pipette mechanism to realize liquid suction and liquid prevention, and the first unit is used to drive the second unit to realize Z-axis movement, which can optimize the structural layout of the pipette needle module, reduce the thickness of the pipette needle module, and facilitate the setting of the pipette needle module. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of an embodiment of the present utility model.

[0012] Figure 2 This is a schematic diagram of the structure of the pipette needle module of the utility model after removing the shell Figure One .

[0013] Figure 3 This is a schematic diagram of the structure of the pipette needle module of the utility model after removing the shell Figure Two . DETAILED DESCRIPTION

[0014] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Please refer to Figures 1 to 3 In this embodiment, the utility model provides a pipette needle module, a first unit 1 and a second unit 2.

[0016] The first unit 1 includes: a first power source 11, a first belt transmission mechanism 12, a first screw-nut mechanism 13 and a guide rail mechanism 14. The output end of the first power source 11 is connected to the first belt transmission mechanism 12, the first belt transmission mechanism 12 is connected to the first screw-nut mechanism 13, and the nut 132 of the first screw-nut mechanism 13 is connected to the slider 142 of the guide rail mechanism 14.

[0017] Specifically, the first power source 11 is a reduction motor fixed to the housing of the first unit 1. The first belt transmission mechanism 12 includes: a first driving wheel 121, a first transmission belt 122, and a first driven wheel 123. The first transmission belt 122 connects the first driving wheel 121 and the first driven wheel 123. The first driving wheel 121 is connected to the output end of the first power source 11. The first driven wheel 123 is coaxially connected to the screw 131 of the first screw-nut mechanism 13. The nut 132 of the first screw-nut mechanism 13 is connected to the slider 142 of the guide rail mechanism 14 and the second unit 2 through the connecting member 133 and the connecting member 143. The guide rail 141 of the guide rail mechanism 14 is set on the housing of the first unit 1. After the power of the first power source 11 is transmitted through the first belt transmission mechanism 12 and the first screw-nut mechanism 13, the second unit 2 can be moved up and down relative to the guide rail 141 of the first unit 1.

[0018] In the second unit 2, the second unit 2 is connected to the slider 142 of the guide rail mechanism 14, and the second unit 2 includes: a second power source 21, a second belt transmission mechanism 22, a second screw nut mechanism 23 and a plunger suction mechanism 3. The output end of the second power source 21 is connected to the second belt transmission mechanism 22, the second belt transmission mechanism 22 is connected to the second screw nut mechanism 23, the second screw nut mechanism 23 is set in the same direction as the first screw nut mechanism 13, and the nut 232 of the second screw nut mechanism 23 is connected to the plunger rod of the plunger suction mechanism 3.

[0019] Specifically, the second belt transmission mechanism 22 includes: a second driving wheel 221, a second transmission belt 2223 and a second driven wheel 223. The second transmission belt 222 connects the second driving wheel 221 and the second driven wheel 223. The second driving wheel 223 is connected to the output end of the second power source 21. The second driven wheel 223 is coaxially connected to the screw 231 of the second screw-nut mechanism 23. After the power of the second power source 21 is transmitted through the second belt transmission mechanism 22 and the second screw-nut mechanism 23, the plunger rod is driven to move up and down, thereby realizing the suction and discharge of liquid by the plunger suction mechanism 3.

[0020] To sum up, the beneficial effect of this scheme is that: the pipette needle module is set up with two units, wherein the second unit is used to drive the plunger pipette mechanism to realize liquid suction and liquid prevention, and the first unit is used to drive the second unit to realize Z-axis movement, which can optimize the structural layout of the pipette needle module, reduce the thickness of the pipette needle module, and facilitate the setting of the pipette needle module.

[0021] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pipette needle module, characterized in that: include: Units 1 and 2; The first unit includes: a first power source, a first belt transmission mechanism, a first screw-nut mechanism, and a guide rail mechanism, wherein the output end of the first power source is connected to the first belt transmission mechanism, the first belt transmission mechanism is connected to the first screw-nut mechanism, and the nut of the first screw-nut mechanism is connected to the slider of the guide rail mechanism; The second unit is connected to the slider of the guide rail mechanism, and the second unit includes: a second power source, a second belt transmission mechanism, a second screw nut mechanism and a plunger suction mechanism. The output end of the second power source is connected to the second belt transmission mechanism, the second belt transmission mechanism is connected to the second screw nut mechanism, the second screw nut mechanism is set in the same direction as the first screw nut mechanism, and the nut of the second screw nut mechanism is connected to the plunger rod of the plunger suction mechanism.

2. The pipette needle module according to claim 1, characterized in that: The first power source is a reduction motor.

3. The pipette needle module according to claim 1, characterized in that: The first belt transmission mechanism includes: a first driving wheel, a first transmission belt and a first driven wheel, the first transmission belt connects the first driving wheel and the first driven wheel, the first driving wheel is connected to the output end of the first power source, the first driven wheel is coaxially connected to the screw of the first screw-nut mechanism, and the nut of the first screw-nut mechanism is connected to the second unit through a connecting member.

4. The pipette needle module according to claim 1, characterized in that: The second belt transmission mechanism includes: a second driving wheel, a second transmission belt and a second driven wheel, the second transmission belt connects the second driving wheel and the second driven wheel, the second driving wheel is connected to the output end of the second power source, and the second driven wheel is coaxially connected to the screw of the second screw-nut mechanism.

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