Variable pitch pipetting device

Abstract

The utility model belongs to pipette device field, concretely relates to a variable distance pipette device, be provided with moving mechanism on the base, the upper end fixed mounting of base has the pneumatic cylinder, the pneumatic cylinder rod end fixed connection has the stand column of pneumatic cylinder, the upper end fixed connection of base has the sliding frame, the sliding frame and stand column sliding connection, the upper end fixed mounting of stand column has the motor, the pivot upper end fixed connection of motor has the sliding seat, be provided with telescopic mechanism on the sliding seat, be provided with suction tube on telescopic mechanism. The utility model drives the two -way screw rod rotation and sliding block to do the screw thread movement through servo motor, further makes the sliding plate slide in the sliding seat, further makes the distance change between two suction tubes, can carry out pipetting between two containers of different distance, and through the two -way air pump reversing suction, further makes the two suction tubes inside alternately suck and discharge liquid, makes the device liquid transfer more efficient.

Description

Technical Field

[0001] This utility model relates to the field of pipetting device technology, specifically a variable-distance pipetting device. Background Technology

[0002] Utility model patent CN218573690U discloses an equidistant movement structure for a multi-channel pipette, including a pipette support, a pipette, a pipetting equidistant conversion component, a pipetting guide rail, and a pipetting guide rail. The pipetting equidistant conversion component is located on the side of the pipette support away from the blood collection tube grasping component, and the pipetting guide rail is located on the side of the pipetting equidistant conversion component away from the blood collection tube grasping component. The pipette is mounted on the pipetting guide rail, and the pipetting guide rail is mounted on the pipette support, driving the pipetting equidistant conversion component of the pipette assembly to move. This utility model's pipetting equidistant conversion component, through the ingenious design of two pipetting equidistant conversion screws, achieves fine-tuning control of four pipette fixing blocks, greatly reducing mechanical complexity, improving stability, and enabling nutrient collection and pipetting operations in more complex environments.

[0003] However, the device has some inconveniences in use. It is not easy to adjust and control the liquid transfer between two containers with different spacings. Also, it is not easy to move and adjust the device to a stable position. Utility Model Content

[0004] The purpose of this invention is to provide a variable-distance pipetting device, which solves the problem that the device is not easy to adjust and control when pipetting between two containers with different distances. At the same time, it also solves the problem that the device is not easy to move and adjust and then place stably.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a variable-distance pipetting device, comprising a base, a moving mechanism on the base, a cylinder fixedly mounted on the upper end of the base, a column fixedly connected to the end of the cylinder rod of the cylinder, a slide fixedly connected to the upper end of the base, the slide and the column being slidably connected, a motor fixedly mounted on the upper end of the column, a slide block fixedly connected to the upper end of the motor shaft, a telescopic mechanism on the slide block, and a suction tube on the telescopic mechanism.

[0006] Preferably, the moving mechanism includes a support plate, which is slidably connected to the interior of the base. A caster wheel is mounted on the lower end of the support plate, and a wedge block is fixedly connected to the upper end of the support plate. A motor is fixedly mounted on the right end of the base, with its output end passing through the base and rotatably connected to it. A lead screw is fixedly connected to the left end of the motor's output end, rotatably connected to the base. A pressure block is threadedly connected to the outer side of the lead screw, and slidably connected to the base. The motor drives the lead screw to rotate and the pressure block to perform threaded movement, causing the pressure block to move and press against the wedge block. This, in turn, causes the support plate to move the caster wheel up and down within the base. This facilitates clutch control between the base and the ground, making the device easy to move and stable when placed in a designated location.

[0007] Preferably, the inclined block has an opening inside, and the opening is movably connected to the lead screw. By providing the opening, interference between the lead screw and the inclined block is avoided.

[0008] Preferably, the telescopic mechanism includes a sliding plate, a sliding plate slidably connected inside the sliding base, a fixed connection between the sliding plate and the suction tube, a slider fixedly connected to the upper end of the sliding plate, a support plate fixedly connected to the upper end of the sliding base, a servo motor fixedly mounted on the left end of the support plate, the drive shaft of the servo motor passing through the support plate and rotatably connected to the support plate, a bidirectional screw fixedly connected to the right end of the drive shaft of the servo motor, the bidirectional screw rotatably connected to the support plate, a mounting plate fixedly connected to the upper end of the sliding base, the mounting plate rotatably connected to the bidirectional screw, a bidirectional air pump fixedly mounted on the upper end of the mounting plate, a fixed tube fixedly connected to the output end of the bidirectional air pump, a fixed plate fixedly connected inside the suction tube, a sliding rod fixedly connected to the lower end of the fixed plate, a sealing block slidably connected to the outer side of the sliding rod, the sealing block slidably connected to the suction tube, and a spring provided on the outer side of the sliding rod. The device uses a servo motor to drive a bidirectional screw to rotate and a slider to make a spiral motion, which in turn causes the slide plate to slide within the slide block. This changes the distance between the two suction tubes, allowing for liquid transfer between two containers with different distances. Furthermore, the device uses a bidirectional air pump to reverse the suction direction, allowing for alternating suction and discharge of liquid in the two suction tubes, making the liquid transfer more efficient.

[0009] Preferably, the bidirectional screw and the slider are connected by a thread, and the slider and the slide block are slidably connected. The bidirectional screw drives the slider to move.

[0010] Preferably, a sliding tube is slidably connected inside the fixed tube, and the sliding tube is fixedly connected to the suction tube. By providing the sliding tube, the fixed tube and the suction tube are connected.

[0011] Preferably, one end of the spring is fixedly connected to the fixing plate, and the other end of the spring is fixedly connected to the sealing block. By providing the spring, the sealing plate can be easily reset.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses an electric motor to drive the lead screw to rotate and the pressure block to make a threaded motion, which in turn causes the pressure block to move and squeeze the inclined block, which in turn causes the pallet to drive the moving wheel to move up and down in the base, which makes it easy to control the clutch between the base and the ground, and makes the device easy to move while being able to be placed stably after being moved to the designated position.

[0014] 2. This utility model uses a servo motor to drive a bidirectional screw to rotate and a slider to make a spiral motion, which in turn causes the slide plate to slide in the slide block, thereby changing the distance between the two suction tubes. This allows for liquid transfer between two containers with different distances. Furthermore, the bidirectional air pump reverses the suction direction, allowing the two suction tubes to alternately suck and drain liquid, making the device more efficient for liquid transfer. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 This utility model Figure 1 A front sectional view of the base;

[0017] Figure 3 This utility model Figure 1 A three-dimensional view of the local structure;

[0018] Figure 4 This utility model Figure 3 A cross-sectional view of the suction tube.

[0019] In the diagram: 1. Base; 2. Moving mechanism; 3. Cylinder; 4. Column; 5. Slide; 6. Motor; 7. Slide seat; 8. Telescopic mechanism; 9. Suction tube; 21. Support plate; 22. Moving wheel; 23. Inclined block; 24. Motor; 25. Lead screw; 26. Opening; 27. Pressure block; 81. Slide plate; 82. Slider; 83. Support plate; 84. Servo motor; 85. Bidirectional screw; 86. Mounting plate; 87. Bidirectional air pump; 88. Fixing tube; 89. Slide tube; 810. Fixing plate; 811. Slide rod; 812. Sealing block; 813. Spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 A variable-distance pipetting device includes a base 1, a moving mechanism 2 on the base 1, a cylinder 3 fixedly mounted on the upper end of the base 1, a column 4 fixedly connected to the end of the cylinder rod of the cylinder 3, a slide 5 fixedly connected to the upper end of the base 1, the slide 5 and the column 4 being slidably connected, a motor 6 fixedly mounted on the upper end of the column 4, a slide seat 7 fixedly connected to the upper end of the rotating shaft of the motor 6, a telescopic mechanism 8 on the slide seat 7, and a suction tube 9 on the telescopic mechanism 8.

[0022] Please see Figures 1-2 The moving mechanism 2 includes a support plate 21, which is slidably connected to the inside of the base 1. A caster 22 is provided at the lower end of the support plate 21, and a wedge block 23 is fixedly connected to the upper end of the support plate 21. An opening 26 is provided inside the wedge block 23, and the opening 26 is movably connected to a lead screw 25. The opening 26 prevents interference between the lead screw 25 and the wedge block 23. A motor 24 is fixedly installed at the right end of the base 1. The output end of the motor 24 passes through the base 1 and is rotatably connected to it. The left end of the output end of the motor 24 is fixed. A lead screw 25 is connected to the base 1. The lead screw 25 is rotatably connected to the base 1. A pressure block 27 is threadedly connected to the outside of the lead screw 25. The pressure block 27 is slidably connected to the base 1. The lead screw 25 is driven to rotate and the pressure block 27 is driven to make threaded movement by the motor 24. This causes the pressure block 27 to move and press the inclined block 23. This causes the support plate 21 to drive the moving wheel 22 to move up and down in the base 1. This makes it easy to control the clutch between the base 1 and the ground. This makes the device easy to move and can be placed stably after it is moved to the designated position.

[0023] Please see Figure 1 , Figure 3 , Figure 4The telescopic mechanism 8 includes a slide plate 81, which is slidably connected to the inside of the slide base 7. The slide plate 81 is fixedly connected to the suction tube 9. A slider 82 is fixedly connected to the upper end of the slide plate 81. A support plate 83 is fixedly connected to the upper end of the slide base 7. A servo motor 84 is fixedly mounted on the left end of the support plate 83. The drive shaft of the servo motor 84 passes through the support plate 83 and is rotatably connected to the support plate 83. A bidirectional screw 85 is threadedly connected to the slider 82. The slider 82 is slidably connected to the slide base 7. The bidirectional screw 85 drives the slider 82 to move. The right end of the drive shaft of the servo motor 84 is fixedly connected to the bidirectional screw 85. The bidirectional screw 85 is rotatably connected to the support plate 83. A mounting plate 86 is fixedly connected to the upper end of the slide base 7. The mounting plate 86 is rotatably connected to the bidirectional screw 85. A bidirectional air pump 87 is fixedly mounted on the upper end of the mounting plate 86. A fixed tube 88 is fixedly connected to the output end of the bidirectional air pump 87. A sliding tube 89 is slidably connected inside the fixed tube 88. The fixed tube 88 and the suction tube 9 are fixedly connected. The fixed tube 88 and the suction tube 9 are connected by a sliding tube 98. The inside of the suction tube 9 is fixedly connected to a fixed plate 810. The lower end of the fixed plate 810 is fixedly connected to a sliding rod 811. The outside of the sliding rod 811 is slidably connected to a sealing block 812. The sealing block 812 is slidably connected to the suction tube 9. A spring 813 is set on the outside of the sliding rod 811. One end of the spring 813 is fixedly connected to the fixed plate 810, and the other end of the spring 813 is fixedly connected to the sealing block 812. By setting the spring 813, the sealing plate 812 can be easily reset. The servo motor 84 drives the bidirectional screw 85 to rotate and the slider 82 to make threaded movement, thereby making the slide plate 81 slide in the slide seat 7, thereby changing the distance between the two suction tubes 9. Liquid can be transferred between two containers with different distances. The bidirectional air pump 87 reverses the suction, thereby making the two suction tubes 9 alternately suck and drain liquid, making the device more efficient in liquid transfer.

[0024] The specific implementation process of this utility model is as follows: In use, the motor 24 is started, driving the lead screw 25 to rotate. The rotation of the lead screw 25 and the pressure block 27 perform a threaded motion, causing the pressure block 27 to move and press the inclined block 23, causing the inclined block 23 to move downwards. This causes the support plate 21 to drive the moving wheel 22 to move within the base 1, facilitating the separation of the base 1 from the ground and making the device easy to move. After the device moves to the designated position, the motor 24 is started in reverse, allowing the moving wheel 22 to enter the base 1, making the base 1 contact the ground. This allows the device to be stably placed after moving to the designated position. The servo motor 84 is then started, driving the bidirectional screw 85 to rotate and the slider 82 to perform a threaded motion, causing the slide plate 81 to move within the slide base 7. The sliding mechanism changes the distance between the two suction tubes 9, allowing for liquid transfer between two containers with different distances. Activating the bidirectional air pump 87 increases the air pressure in one suction tube 9 and decreases it in the other. The suction tube 9 with the decreased air pressure can then draw in the solution. The cylinder drives the column 4 to move, and the motor 6 drives the slide block 7 to rotate, enabling liquid transfer. The servo motor 84 drives the bidirectional screw 85 to rotate and the slider 82 to perform a spiral motion, causing the slide plate 81 to slide within the slide block 7. This changes the distance between the two suction tubes 9, allowing for liquid transfer between two containers with different distances. Furthermore, the bidirectional air pump 87 reverses the suction direction, causing the two suction tubes 9 to alternately draw and discharge liquid, making the device more efficient for liquid transfer.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A variable-distance pipetting device, comprising a base (1), characterized in that: A moving mechanism (2) is provided on the base (1). A cylinder (3) is fixedly installed on the upper end of the base (1). A column (4) is fixedly connected to the end of the cylinder rod of the cylinder (3). A slide (5) is fixedly connected to the upper end of the base (1). The slide (5) and the column (4) are slidably connected. A motor (6) is fixedly installed on the upper end of the column (4). A slide seat (7) is fixedly connected to the upper end of the rotating shaft of the motor (6). A telescopic mechanism (8) is provided on the slide seat (7). A suction tube (9) is provided on the telescopic mechanism (8).

2. The variable-distance pipetting device according to claim 1, characterized in that: The moving mechanism (2) includes a support plate (21). The support plate (21) is slidably connected inside the base (1). The lower end of the support plate (21) is provided with a moving wheel (22). The upper end of the support plate (21) is fixedly connected with a wedge (23). The right end of the base (1) is fixedly installed with a motor (24). The output end of the motor (24) passes through the base (1) and is rotatably connected to the base (1). The left end of the output end of the motor (24) is fixedly connected with a lead screw (25). The lead screw (25) is rotatably connected to the base (1). The outer side of the lead screw (25) is connected with a pressure block (27) by a thread. The pressure block (27) is slidably connected to the base (1).

3. The variable-distance pipetting device according to claim 2, characterized in that: The inclined block (23) has an opening (26) inside, and the opening (26) is movably connected to the lead screw (25).

4. The variable-distance pipetting device according to claim 1, characterized in that: The telescopic mechanism (8) includes a slide plate (81), which is slidably connected inside the slide base (7). The slide plate (81) is fixedly connected to the suction tube (9). A slider (82) is fixedly connected to the upper end of the slide plate (81). A support plate (83) is fixedly connected to the upper end of the slide base (7). A servo motor (84) is fixedly installed on the left end of the support plate (83). The drive shaft of the servo motor (84) passes through the support plate (83) and is rotatably connected to the support plate (83). A bidirectional screw (85) is fixedly connected to the right end of the drive shaft of the servo motor (84). The bidirectional screw (85) is rotatably connected to the support plate (83). The upper end of the slide (7) is fixedly connected to an mounting plate (86), the mounting plate (86) and the bidirectional screw (85) are rotatably connected, the upper end of the mounting plate (86) is fixedly installed with a bidirectional air pump (87), the output end of the bidirectional air pump (87) is fixedly connected to a fixing pipe (88), the inside of the suction pipe (9) is fixedly connected to a fixing plate (810), the lower end of the fixing plate (810) is fixedly connected to a slide rod (811), the outer side of the slide rod (811) is slidably connected to a sealing block (812), the sealing block (812) and the suction pipe (9) are slidably connected, and a spring (813) is provided on the outer side of the slide rod (811).

5. A variable-distance pipetting device according to claim 4, characterized in that: The bidirectional screw (85) and the slider (82) are connected by threads, and the slider (82) and the slide block (7) are slidably connected.

6. A variable-distance pipetting device according to claim 4, characterized in that: The fixed tube (88) is internally slidably connected to a sliding tube (89), and the sliding tube (89) and the suction tube (9) are fixedly connected.

7. A variable-distance pipetting device according to claim 4, characterized in that: One end of the spring (813) is fixedly connected to the fixing plate (810), and the other end of the spring (813) is fixedly connected to the sealing block (812).

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