CN115900914A - Micro Weighing Platform - Google Patents

Abstract

The invention relates to the technical field of laboratory automation, and discloses a micro-weighing platform, including a frame, a horizontal track is set on the upper frame of the frame and a rear straight beam, and a container operation unit and a sample micro-supply unit are set on the horizontal track. Below the frame is a workbench, on which a container rack unit, a weighing unit and a funnel unit are arranged, the container rack unit and the container operation unit are located on the same side, the sample micro-supply unit and the weighing unit, The funnel unit is located on the same side. After the container operation unit picks up the container from the container rack unit and uncaps it, and then sends it to the weighing unit, the sample micro-supply unit supplies the sample to the container on the weighing unit to a predetermined weight. The container operation unit closes the supplied container and puts it back to the container rack unit. The invention is small in volume, light in weight, stable in work and accurate in weighing, and provides an optimal solution for laboratory quantitative analysis and processing.

Description

Micro Weighing Platform

technical field

The invention relates to the technical field of laboratory automation, in particular to a micro weighing platform.

Background technique

When the powder is accurately measured in the laboratory, the amount of sample added to the test tube and other containers is calculated in milligrams or even micrograms as required, which requires the weighing platform to be able to measure accurately without lengthy operations.

Existing weighing systems generally deliver samples by means of vibration, etc. During the execution process, it is easy to pollute the samples, or contact with the air for too long, resulting in physical and chemical changes, which will affect the experimental results.

In addition, for the experimental operation of frequently changing the type of sample, it is impossible to change the sample conveniently and quickly. The existing equipment is bulky, which is not conducive to the miniaturization and optimization of the laboratory configuration.

Contents of the invention

The object of the present invention is to solve the above problems and provide a micro-weighing platform, which is small in size, light in weight, stable in work, accurate in weighing, and provides an optimal solution for laboratory quantitative analysis and processing.

The technical scheme that the present invention takes is:

A micro-weighing platform is characterized in that it includes a frame, a horizontal track is set on the rear straight beam of the upper frame of the frame, a container operation unit and a sample micro-supply unit are set on the horizontal track, and the working platform, a container rack unit, a weighing unit, and a funnel unit are arranged on the workbench, the container rack unit and the container operation unit are located on the same side, and the sample micro-supply unit, the weighing unit, and the funnel unit are located on the same side, the After the container operation unit picks up the container from the container rack unit and uncaps it, after sending it to the weighing unit, the sample micro-supply unit supplies the sample to the container on the weighing unit to a predetermined weight, and the container operation unit will supply The completed container is closed and placed back into the container rack unit.

Further, the horizontal track is a rack arranged on the rear straight beam, and two drive assemblies are arranged on the rack, the drive assembly includes a bracket, and a space is formed between the two side plates of the bracket, and the space below the space is Two driven wheels are set between the two side plates, and two pressure wheels are set between the two plates above the space, and a synchronous belt ring is arranged outside the driven wheel and the pressure wheel. The driving wheel is pressed on the synchronous belt ring, so that the synchronous belt ring presents a concave shape, the driving wheel is driven by the motor outside the side plate, the lower end of the synchronous belt ring is engaged with the rack, and the bracket is connected by The plate is connected to the rear end of the cantilever, the motor drives the driving wheel to rotate, and drives the synchronous belt circle to rotate, so that the drive assembly is displaced on the rack, and a vertical guide rail is set on the drive assembly, the container operation unit and the sample The micro-supply units are respectively arranged on respective vertical guide rails.

Further, rollers are provided on the free ends of the vertical guide rails, and a support beam is provided on the front straight beam, and the rollers cooperate to roll on the support beams.

Further, the container operation unit includes a container cover clamping and rotating mechanism and a container body clamping and lifting mechanism arranged on a vertical support, the container cover clamping and rotating mechanism includes a clamping head, and the container body clamping and lifting mechanism It includes a gripper, which protrudes below the clamping head, so that a channel for the container body is formed between the clamping head and the gripper. The gripper is used to clamp the container body and lift it up and down. The clamping head uses It is used to clamp and rotate the container cover to realize the opening and closing operation of the container.

Further, the sample micro-supply unit includes a driving shaft and a connecting seat, the upper end of the connecting seat is fixedly connected to the driving shaft, the lower end of the connecting seat is provided with a deck, the chuck is connected to the chuck of the funnel under the deck, and the driving shaft drives the funnel to rotate, Quantitative output of sample powder.

Further, a plurality of clamping strips are set on the work, and the container frame unit and the funnel unit are respectively inserted between adjacent clamping strips through a push-pull base, and the container adapter port and the funnel adapter port are provided on the base.

Further, the weighing unit includes a precision balance arranged on a workbench, and a casing is arranged outside the balance.

Further, a double open cover that can be flipped elastically downward is arranged on the top of the cover, a round hole is arranged in the middle of the cover, the diameter of the round hole is larger than the outer diameter of the container, and a top plate is arranged on one side of the container operation unit, and the width of the top plate is smaller than that of the cover. The top width of the shell.

Further, the racks are all aluminum alloy structures, and the number of pull-out bases of the container frame unit and the weighing unit is less than four.

Further, adjustment supports are provided on the four lower feet of the frame, and the workbench is a desktop device.

The beneficial effects of the present invention are:

(1) The whole is a desktop structure, small in size, light in weight, and can be moved by a single person;

(2) The mechanical arm runs smoothly, with low noise and fast progress;

(3) The opening and closing of the cover is completed in motion, which reduces the working steps;

(4) The weighing accuracy is high, and it is convenient and quick to change the sample type.

Description of drawings

Accompanying drawing 1 is the three-dimensional structure schematic diagram of the present invention;

Accompanying drawing 2 is the partially enlarged schematic diagram of horizontal direction driving assembly;

Accompanying drawing 3 is the local enlargement diagram of drive assembly free end;

Accompanying drawing 4 is the partial enlarged view of container operation unit;

Accompanying drawing 5 is the partial enlarged view of sample micro-supply unit;

Accompanying drawing 6 is the partial enlarged view of container frame unit and funnel unit;

Accompanying drawing 7 is the partial enlarged view of weighing unit.

The labels in the accompanying drawings are respectively:

1. Rack; 2. Adjustable support;

3. Workbench; 4. Container rack unit;

5. Weighing unit; 6. Funnel unit;

7. Horizontal track; 8. Container operating unit;

9. Sample micro-supply unit; 10. Rear straight beam;

11. Drive assembly; 12. Bracket;

13. Timing belt circle; 14. Driving wheel;

15. Vertical rail; 16. Roller;

17. Front straight beam; 18. Support beam;

19. Rotating mechanism; 20. Lifting mechanism;

21. Clamping head; 22. Gripper;

23. Drive shaft; 24. Funnel;

25. Card bar; 26. Base;

27. Balance; 28. Cover;

29. Double open cover; 30. Round hole;

31. Top plate; 32. Container.

Detailed ways

The specific implementation of the micro-weighing platform of the present invention will be described in detail below in conjunction with the accompanying drawings.

Referring to accompanying drawing 1, the micro-weighing platform is a desktop structure, which can be placed on the desktop for operation. The frame 1 of the weighing platform is all assembled from aluminum alloy profiles, which has the advantages of light weight and small volume, and the weight of the whole machine is not more than 20KG. Four feet below the frame 1 are provided with adjustable supports 2 for adjusting the levelness of the frame 1 on the desktop.

A workbench 3 is set under the frame 1, a container frame unit 4, a weighing unit 5 and a funnel unit 6 are set on the workbench 3, a horizontal track 7 is set on the rear straight beam 10 of the upper frame of the frame 1, and a horizontal track 7 is set on the horizontal track 7. Container operating unit 8 and sample micro-supply unit 9 .

The container rack unit 4 and the container operation unit 8 are located on the same side, and the sample micro-supply unit 9 and the weighing unit 5 and the funnel unit 6 are located on the same side, which is convenient for the container operation unit 8 to operate the container 32, and the sample micro-supply unit 9 to replace samples and replace Convenient weighing operation.

The container operation unit 8 picks up the container 32 from the container rack unit 4, such as a 50ml centrifuge tube, a 15ml nitrogen blowing tube and other test tubes, uncaps after picking up, and then sends it to the weighing unit 5, which is connected to the control system. The sample micro-supply unit 9 supplies samples to the container 32 on the weighing unit 5, and the weighing unit 5 monitors the weight of the sample supply in real time. When the predetermined weight is reached, the container operation unit 8 closes the supplied container 32 and puts it back. to container rack unit 4.

Referring to accompanying drawing 2, the horizontal track 7 is a rack arranged on the rear straight beam 10, and two driving assemblies 11 are arranged on the rack to drive the container operation unit 8 and the sample micro-supply unit 9 respectively.

Drive assembly 11 comprises support 12, forms space between the two side plates of support 12, two driven wheels are set between the two side plates below the space, two pressure wheels are set between the two plates above the space, between driven wheel and pressure wheel The timing belt ring 13 is set outside the wheel, the tooth surface side of the timing belt ring 13 is located on the outside, and the driving wheel 14 is pressed on the timing belt ring 13 above the pressure wheel, so that the timing belt ring 13 presents a concave shape, and the driving wheel 14 is formed by the side plate Driven by the outer motor, the lower end of the synchronous belt ring 13 is engaged with the rack, and the motor drives the driving wheel 14 to rotate, driving the synchronous belt ring 13 to rotate, so that the drive assembly 11 is displaced on the rack.

Vertical guide rails 15 are arranged on the driving assembly 11 , and the container operation unit 8 and the sample micro-supply unit 9 are respectively arranged on the respective vertical guide rails 15 . Both units move on their respective vertical guide rails 15, and cooperate with the displacement of the drive assembly 11 on the rack to realize the free movement of the two units to the working point in the XY plane.

Referring to accompanying drawing 3, the free end of vertical guide rail 15 can be arranged on the support beam 18 of front straight beam 17 by roller 16. The free ends of the vertical guide rails 15 are relatively fixed to reduce the vibration of the vertical guide rails 15 . The rollers 16 are fitted on the support beams 18 in a manner of embracing up and down.

Referring to accompanying drawing 4, container operation unit 8 comprises the container cover clamping rotating mechanism 19 that is arranged on the vertical support 12 and container body clamping lifting mechanism 20, and container cover clamping rotating mechanism 19 comprises clamping head 21, and container body clamps The holding and lifting mechanism 20 includes a gripper 22, and the gripper 22 extends below the clamping head 21, so that a container body channel is formed between the clamping head 21 and the gripper 22, and the gripper 22 is used to clamp the container body and lift it up and down. The clamping head 21 is used for clamping and rotating the container cap to realize the opening and closing operation of the container 32 .

When feeding, after the gripper 22 clamps the container 32, the container operation unit 8 moves to the position of the weighing unit 5 immediately, and the operation of opening the cover is completed during the moving process. After the weighing is completed, the gripper 22 grabs the container 32 from the weighing unit 5, moves to the container 32 on the container rack unit 4, and puts it back to its original position. At this moment, the container cap is still in the clamping head 21, and the cap closing operation is completed during the moving process.

Referring to accompanying drawing 5, the sample micro-supply unit 9 includes a driving shaft 23 and a connecting seat, the upper end of the connecting seat is fixedly connected with the driving rotating shaft 23, the lower end of the connecting seat is provided with a deck, the chuck is connected to the chuck of the funnel 24 under the deck, and the driving shaft 23 drives the funnel 24 rotations, quantitatively output sample powder.

The funnel unit 6 provides different types of sample funnels for the sample micro-supply unit 9. The funnel can be a micro-supply screw output funnel device in the prior art. The applicant also applied for several patents on related funnels earlier, which can be cited as prior art.

Referring to accompanying drawing 6, a plurality of clamping strips 25 are arranged on the work, and the container rack unit 4 and the funnel unit 6 are respectively inserted between the adjacent clamping strips 25 through the push-pull base 26, and the container 32 adapter port and the funnel adapter are arranged on the base 26. Match mouth. Replace different bases 26 for placing containers 32 and funnels 24 of different sizes. When in use, the base 26 is pushed between the adjacent clamping strips 25 to complete the positioning. After the weighing is completed, the base 26 is pulled out and a new container 32 is replaced to realize continuous weighing work. According to desktop machines of different sizes, the quantity of the pull-out base 26 of the container rack unit 4 and the weighing unit 5 is preferably less than four.

Referring to accompanying drawing 7, weighing unit 5 comprises the precision balance 27 that is arranged on the workbench 3, and casing 28 is arranged outside balance 27. The top of the casing 28 is provided with a double opening cover 29 which can be flipped elastically downwards, and a round hole 30 is arranged in the middle of the opening cover, and the diameter of the round hole 30 is larger than the outer diameter of the container 32 . On one side of the container handling unit 8 is provided a top plate 31 whose width is smaller than the width of the top of the casing 28 . When the container operation unit 8 puts the container 32 into the placement port on the balance 27, it can be directly put down from the circular hole 30. After the weighing was completed, when the container operation unit 8 took the container 32, the top plate 31 was pressed down on the double-open cover 29, and the double-open cover 29 was turned downwards to expose the container 32. At this time, the gripper 22 of the container operation unit 8 can have Sufficient space carries out clamping action to container 32, lifts up after clamping container 32, at this moment, double-opening cover 29 resets under the effect of elastic force, guarantees in the course of work, avoids the impact of external factors on weighing accuracy as far as possible.

The above are only preferred embodiments of the present invention. It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the present invention. protection scope of the invention.

Claims (10)

1. A micro-weighing platform, characterized in that: it comprises a frame, a horizontal track is set on the rear straight beam of the upper frame of the frame, a container operation unit and a sample micro-supply unit are set on the horizontal track, and the bottom of the frame It is a workbench, and a container rack unit, a weighing unit and a funnel unit are arranged on the workbench, the container rack unit and the container operation unit are located on the same side, and the sample micro-supply unit, the weighing unit, and the funnel unit are located on the same side After the container operation unit picks up the container from the container rack unit and uncaps it, and then sends it to the weighing unit, the sample micro-supply unit supplies the container on the weighing unit to a predetermined weight, and the container operation unit The supplied container is closed and put back into the container rack unit. 2. The micro-weighing platform according to claim 1, characterized in that: the horizontal track is a rack arranged on the rear straight beam, and two drive assemblies are arranged on the rack, and the drive assembly includes a bracket , a space is formed between the two side plates of the bracket, two driven wheels are set between the two side plates below the space, two pressure wheels are set between the two plates above the space, and a timing belt is arranged outside the driven wheels and the pressure wheels The tooth surface side of the synchronous belt circle is located on the outside, and the driving wheel is pressed on the synchronous belt circle above the pressure wheel, so that the synchronous belt circle presents a concave shape. The driving wheel is driven by the motor outside the side plate, and the synchronous belt The lower end of the ring is meshed and fixed with the rack, and the bracket is connected to the rear end of the cantilever through the connecting plate. The motor drives the driving wheel to rotate, and drives the synchronous belt ring to rotate, so that the drive assembly is displaced on the rack. Vertical guide rails are arranged on the drive assembly, and the container operation unit and the sample micro-supply unit are respectively arranged on their respective vertical guide rails. 3. The micro-weighing platform according to claim 2, characterized in that: rollers are provided on the free ends of the vertical guide rails, and a support beam is provided on the front straight beam, and the rollers cooperate to roll on the support beams. 4. The micro-weighing platform according to claim 1, characterized in that: the container operation unit includes a container cover clamping rotation mechanism and a container body clamping lifting mechanism arranged on a vertical support, and the container cover clamping The holding and rotating mechanism includes a clamping head, and the container body clamping and lifting mechanism includes a gripper. The hand is used to clamp the container body and lift, and the clamping head is used to clamp the container cover and rotate to realize the opening and closing operation of the container. 5. The micro-weighing platform according to claim 1, characterized in that: the sample micro-supply unit includes a driving shaft and a connecting seat, the upper end of the connecting seat is fixedly connected with the driving shaft, the lower end of the connecting seat is provided with a deck, and the card The chuck head of the funnel is connected under the seat, and the driving shaft drives the funnel to rotate to quantitatively output the sample powder. 6. The micro-weighing platform according to any one of claims 1 to 5, characterized in that: a plurality of clamping strips are arranged on the working surface, and the container rack unit and the funnel unit are respectively inserted into corresponding Between the adjacent clamping strips, a container adapter port and a funnel adapter port are arranged on the base. 7. The micro-weighing platform according to any one of claims 1 to 5, characterized in that: the weighing unit comprises a precision balance arranged on a workbench, and a casing is arranged outside the balance. 8. The micro-weighing platform according to claim 7, characterized in that: a double open cover that can be flipped elastically downward is arranged on the top of the cover, and a round hole is arranged in the middle of the cover, and the diameter of the round hole is larger than the outer diameter of the container. A top plate is provided on one side of the container operation unit, and the width of the top plate is smaller than the width of the top of the casing. 9. The micro-weighing platform according to any one of claims 1 to 5, characterized in that: the frame is an aluminum alloy structure, and the number of pull-out bases of the container frame unit and the weighing unit less than 4. 10. The micro-weighing platform according to claim 9, characterized in that: the bottom four feet of the frame are provided with adjustable supports, and the workbench is a desktop device.

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