Automatic pipetting device based on manual pipetting gun

Abstract

The utility model relates to an automatic pipetting device based on a manual pipetting gun, which comprises a hollow protective shell, a linear motion mechanism is mounted in the protective shell, a pressing block extending out of the protective shell is connected onto the linear motion mechanism, and the manual pipetting gun is detachably and fixedly mounted on the outer side wall of the protective shell through a pipetting gun clamp. And the linear motion mechanism can drive the pressing block to move up and down to press or release a suction and discharge button of the manual pipette. The automatic pipetting device has the beneficial effects of eliminating personal errors, reducing occupational injuries of experimenters, reducing the cost of an automatic pipetting workstation and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pipette device, especially to an automatic pipette device based on a manual pipette gun, and belongs to the technical field of experimental apparatus. BACKGROUND

[0002] In scientific research in the fields of chemistry, biology and medicine, the accurate transfer of liquid is a common and important operation, and the pipette gun is one of the experimental tools commonly used in the pipetting process. Although the traditional manual pipette gun is flexible and convenient, it is inefficient in a large number of repetitive solution suction and discharge work, which can easily cause operator fatigue and errors, and may also cause harm to the human body, and in severe cases, it can cause occupational injury. However, the currently marketed large-capacity electric pipette gun and integrated automatic pipette workstation are too expensive, hindering their market promotion.

[0003] With the development of automation technology, it is necessary to develop an automatic pipette device based on a manual pipette gun to eliminate human error, reduce the occupational injury of laboratory personnel and reduce the cost of automatic pipette workstations. CONTENT OF THE UTILITY MODEL

[0004] The utility model mainly aims at the above problems existing in the prior art, and provides an automatic pipette device based on a manual pipette gun, which combines the operation characteristics of the linear motion mechanism and the manual pipette gun, realizes accurate and efficient liquid processing, reduces the cost, and eliminates human error and reduces the occupational injury of laboratory personnel.

[0005] The purpose of the utility model is mainly realized through the following scheme:

[0006] An automatic pipette device based on a manual pipette gun, comprising a hollow protective shell, a linear motion mechanism is installed in the protective shell, a pressing block extending out of the protective shell is connected to the linear motion mechanism, a manual pipette gun is detachably fixed and installed on the outer wall of the protective shell through a pipette clamp, and the linear motion mechanism can drive the pressing block to move up and down to press or release the suction and discharge button of the manual pipette gun.

[0007] As a preferred, the linear motion mechanism comprises a guide rod support and a motor flange installed in the protective shell, the guide rod support is located above the motor flange, a lead screw motor is installed on the lower surface of the motor flange, the lead screw part of the lead screw motor is threadedly connected with a moving plate after penetrating through the motor flange, and one side of the moving plate is fixedly connected with the pressing block after extending out of the protective shell.

[0008] As a preferred, a sliding groove is formed in the outer wall of the protective shell for the up and down movement of the moving plate and the pressing block.

[0009] As preferred, at least one guide rod is fixedly connected between the guide rod support and the motor flange, the guide rod penetrates the moving plate, and the moving plate is provided with a guide sleeve matched with the guide rod.

[0010] As preferred, a limit switch is installed in the protective shell, and the limit switch is located between the guide rod support and the moving plate.

[0011] As preferred, two pipette clamps are provided, and the pipette clamps clamp the upper part and the lower part of the manual pipette body respectively.

[0012] As preferred, the pipette clamps comprise a first clamp and a second clamp, the first clamp is fixedly installed on the side wall of the protective shell, the second clamp is fixedly connected with the first clamp, and the opposite sides of the first clamp and the second clamp are provided with grooves matched with the outer wall of the manual pipette.

[0013] Therefore, the utility model has the following advantages:

[0014] (1) The utility model discloses a linear motion mechanism and the combination of the manual pipette, realizes the automation of the manual pipette to suck and discharge solution, improves work efficiency, and reduces the professional damage of experimental personnel and the cost of automatic pipetting workstation.

[0015] (2) The utility model discloses the limit switch and the screw rod motor can accurately control the liquid sucking and discharging process of the manual pipette, and reduce the error caused by manual operation.

[0016] (3) The utility model can be seamlessly integrated with automatic workstations and other automatic experimental equipment, realizes more complex experimental processes, and has good versatility and practicality. DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is a side view of the utility model;

[0019] Figure 3 It is a schematic view of the internal structure of the protective shell in the utility model;

[0020] Figure 4 It is a schematic view of the internal structure of the protective shell in the utility model.

[0021] Illustration: 1-protective shell, 2-pressing block, 3-pipette clamp, 4-manual pipette, 5-sucking and discharging button, 6-guide rod support, 7-motor flange, 8-screw rod motor, 9-screw rod part, 10-moving plate, 11-sliding groove, 12-guide rod, 13-guide sleeve, 14-limit switch, 15-first clamp, 16-second clamp, 17-groove. DETAILED DESCRIPTION

[0022] The technical solutions of the present application will be further described in detail below with specific examples and in conjunction with the drawings. It should be understood that the implementation of the present application is not limited to the following examples, and any form of modification and / or change made to the present application will fall within the scope of protection of the present application.

[0023] In the present application, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used can be purchased from the market or commonly used in the art. The methods in the following examples, unless otherwise specified, are conventional methods in the art. The components or equipment in the following examples, unless otherwise specified, are general standard components or components known to those skilled in the art, and their structure and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0024] Example 1:

[0025] As shown in Figure 1 , 2 , the present application provides a technical solution, an automatic pipetting device based on a manual pipetting gun, which comprises a hollow protective shell 1, a linear motion mechanism is installed in the protective shell 1, a pressing block 2 connected to the linear motion mechanism extends out of the protective shell 1, a manual pipetting gun 4 is detachably fixed and installed on the outer wall of the protective shell 1 through a pipetting gun clamp 3, and the linear motion mechanism can drive the pressing block 2 to move up and down to press or release the suction and discharge button 5 of the manual pipetting gun 4, thereby completing the suction and discharge of liquid.

[0026] Example 2:

[0027] As shown in Figure 3 , 4 , the present application provides another technical solution, an automatic pipetting device based on a manual pipetting gun, which is different from example 1 in that the linear motion mechanism comprises a guide rod bracket 6 and a motor flange 7 installed in the protective shell 1, the guide rod bracket 6 and the motor flange 7 are fixedly connected between the inner wall of the protective shell 1 by bolts or screws, the guide rod bracket 6 is located above the motor flange 7, a vertical screw rod motor 8 is fixedly installed on the lower surface of the motor flange 7 by bolts, a moving plate 10 is threadedly connected to the screw rod portion 9 of the screw rod motor 8 after passing through the motor flange 7, a threaded hole or nut matching the screw rod portion 9 of the screw rod motor 8 is provided in the middle of the moving plate 10, and the moving plate 10 is welded or bolted between the pressing block 2 after extending out of the protective shell 1.

[0028] Specifically, a sliding groove 11 for the upward and downward movement of the moving plate 10 and the pressing block 2 is formed on the outer wall of the protective shell 1, and the sliding groove 11 should be vertically arranged.

[0029] Specifically, at least one guide rod 12 is fixedly connected between the guide rod support 6 and the motor flange 7 by bolts, two guide rods 12 are arranged in the embodiment, and are located at opposite angles between the guide rod support 6 and the motor flange 7, the guide rod 12 penetrates the moving plate 10, and the moving plate 10 is provided with a guide sleeve 13 matched with the guide rod 12, the guide rod 12 and the guide sleeve 13 are in sliding connection, and the moving plate 10 and the pressing block 2 can move up and down along the length direction of the guide rod 12 by starting the lead screw motor 8.

[0030] Specifically, a limit switch 14 is arranged in the protective shell 1, the limit switch 14 is located between the guide rod support 6 and the moving plate 10, and should be close to the position of the guide rod support 6, and the automatic pipetting device is also provided with a controller electrically connected with the lead screw motor 8 and the limit switch 14; when it is needed to pipette liquid, the controller receives external instructions, and triggers the lead screw motor 8 to start, the lead screw motor 8 drives the moving plate 10 and the pressing block 2 to apply a pushing force to the suction and discharge button 5 of the manual pipetting gun 4 and press to the first gear of the suction and discharge button 5, then the lead screw motor 8 is reversely started, the moving plate 10 and the pressing block 2 are driven to slowly move upwards and release the suction and discharge button 5 to suck liquid. After the liquid is sucked, the controller controls the lead screw motor 8 to start again, the lead screw motor 8 drives the moving plate 10 and the pressing block 2 to apply a pushing force to the suction and discharge button 5 and press to the first gear, pause slightly, and then press to the second gear to squeeze the liquid in the solution cavity to the target container.

[0031] The controller can adopt a PLC controller, a single-chip microcomputer or an industrial computer, the controller receives signals fed back by the limit switch 14, and controls the start, stop and forward and reverse rotation of the lead screw motor 8, the specific model and specification of the lead screw motor 8, the limit switch 14 and the controller need to be selected and determined according to the actual specification of the device, and the specific selection and calculation method adopts the prior art in the field, so it will not be described in detail, in addition, the power supply and principle of the lead screw motor 8, the limit switch 14 and the controller are not in the protection scope of the application, and the skilled person in the art can obtain them by the common knowledge, conventional means or simple deduction in the field, which will not be described here.

[0032] Embodiment 3:

[0033] As shown in Figure 2 , 3 Another technical scheme is provided in the utility model, and the difference between the automatic pipetting device based on the manual pipetting gun and the embodiment 1 is that the pipetting gun clamp 3 is provided with two, and the upper part and the lower part of the main body position of the manual pipetting gun 4 are clamped respectively.

[0034] Specifically, the pipette clamp 3 is composed of a first clamp 15 and a second clamp 16, the first clamp 15 is fixedly installed on the side wall of the protective shell 1 through bolts, the second clamp 16 is detachably fixedly connected with the first clamp 15 through bolts, and the opposite sides of the first clamp 15 and the second clamp 16 are provided with grooves 17 matched with the outer wall of the manual pipette 4, so that the first clamp 15 and the second clamp 16 arranged in two opposite directions can clamp and fix the manual pipette 4 on the side wall of the protective shell 1, and the wall surface of the groove 17 can be bonded with flannel or rubber, which can play a good buffering effect and increase the friction effect, so as to avoid damage to the manual pipette 4 and ensure the clamping of the manual pipette 4.

[0035] The combination of the linear motion mechanism and the manual pipette realizes automatic solution suction and discharge of the manual pipette, improves work efficiency, reduces professional injury of experimenters and reduces cost of the automatic pipetting workstation; the limiting switch and the screw rod motor can accurately control the liquid suction and discharge process of the manual pipette, and reduce errors caused by manual operation; the utility model can be seamlessly integrated with automatic workstations and other automatic experimental equipment, realize more complex experimental processes, and has good universality and practicality.

[0036] It should be understood that the embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

Claims

1. An automated pipetting device based on a manual pipette, characterized in that: The invention comprises a protective shell (1) with a hollow interior, wherein a linear motion mechanism is installed in the protective shell (1), wherein a pressing block (2) extending out of the protective shell (1) is connected to the linear motion mechanism, and a manual pipette (4) is detachably fixedly installed on the outer wall of the protective shell (1) via a pipette clamp (3), and the linear motion mechanism can drive the pressing block (2) to move up and down to press or release the suction and discharge button (5) of the manual pipette (4).

2. An automated pipetting device based on a manual pipette according to claim 1, characterized in that: The linear motion mechanism comprises a guide rod bracket (6) and a motor flange (7) installed in a protective shell (1), wherein the guide rod bracket (6) is located above the motor flange (7), and a screw motor (8) is installed on the lower surface of the motor flange (7), and a screw rod portion (9) of the screw motor (8) passes through the motor flange (7) and is threadedly connected to a movable plate (10), and one side of the movable plate (10) extends out of the protective shell (1) and is fixedly connected to the pressing block (2).

3. The automated liquid transfer device based on a manual liquid transfer gun according to claim 2, characterized in that: The outer wall of the protective shell (1) is provided with a sliding groove (11) for the movable plate (10) and the pressing block (2) to move up and down.

4. The automated liquid transfer device based on a manual liquid transfer gun according to claim 3, characterized in that: At least one guide rod (12) is fixedly connected between the guide rod bracket (6) and the motor flange (7), the guide rod (12) passes through the movable plate (10), and a guide sleeve (13) for use with the guide rod (12) is provided on the movable plate (10).

5. The automated liquid transfer device based on a manual liquid transfer gun according to claim 4, characterized in that: A limit switch (14) is installed in the protective shell (1), and the limit switch (14) is located between the guide rod bracket (6) and the movable plate (10).

6. The automated liquid transfer device based on a manual liquid transfer gun according to claim 1, characterized in that: The pipette clamps (3) are provided with two, and respectively clamp the upper and lower parts of the main body of the manual pipette (4).

7. The automated liquid transfer device based on a manual liquid transfer gun according to claim 6, characterized in that: The pipette clamp (3) comprises a first clamp (15) and a second clamp (16), wherein the first clamp (15) is fixedly mounted on the side wall of the protective shell (1), the second clamp (16) is fixedly connected to the first clamp (15), and grooves (17) adapted to the outer wall of the manual pipette (4) are provided on opposite sides of the first clamp (15) and the second clamp (16).

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