Automatic weighing method and system

Abstract

The present invention discloses an automatic weighing method, comprising the following steps: S01, during weighing, transferring the sample bottles in the sample bottle storage area to the mixing and stirring station for automatic mixing and stirring; S02, transferring the sample bottles to the automatic capping station for automatic opening of the cap; S03, transferring the sample bottles to the automatic weighing station for automatic sampling and weighing; S04, transferring the sample bottles to the automatic capping station for automatic closing of the cap; S05, transferring the sample bottles to the sample bottle storage area. The present invention also discloses an automatic weighing system, comprising a sample bottle transfer component, a sample bottle storage area, a mixing and stirring station, an automatic capping station and an automatic weighing station; a mixing and stirring component is installed on the mixing and stirring station; an automatic capping component is installed on the automatic capping station; an automatic weighing component is installed on the automatic weighing station; and the sample bottle transfer component is used to realize the transfer of sample bottles in the sample bottle storage area and between the stations. The automatic weighing method and system of the present invention both have the advantages of high degree of automation.

Description

Technical Field

[0001] The invention mainly relates to the technical field of sample analysis, and in particular to an automatic weighing method and system. Background Art

[0002] In the coal quality testing industry, due to the poor working environment and high labor intensity, the requirements for the automation and intelligence level of equipment are getting higher and higher. In particular, the automatic weighing of coal samples involves several issues:

[0003] 1. Storage management of sample bottles. When a batch of coal samples arrives, the coal samples are usually placed in sample bottles. That is, when a batch of sample bottles arrives (such as 10 bottles of coal samples), there is a problem of storage management of the sample bottles.

[0004] 2. When a certain number of sample bottles arrive, identify the sample bottles that need to be weighed, stir and shake the sample bottles, and then open the bottle caps.

[0005] 3. After opening the sample bottle, you need to take out a certain mass of coal sample from the sample bottle and place it on different crucibles (such as sulfur crucible, volatile matter crucible, water-ash crucible, etc.) and weigh it.

[0006] 4. After taking the coal sample from the sample bottle, you need to close the lid and store it.

[0007] 5. After the crucible test with the coal sample is completed, determine whether the experiment needs to be repeated based on the test results.

[0008] 6. It is also necessary to achieve docking with other automated systems, such as pneumatic conveying systems, etc. The sample bottles are transported through the pneumatic conveying system.

[0009] At present, the above work is all done manually, including manual management of sample bottles, manual coding and identification of sample bottles, manual opening of lids, manual weighing, manual closing of lids, etc., with a low degree of automation and low efficiency. Summary of the invention

[0010] The technical problem to be solved by the present invention is: in view of the technical problems existing in the prior art, the present invention provides an automatic weighing method and system with a high degree of automation.

[0011] In order to solve the above technical problems, the technical solution proposed by the present invention is:

[0012] An automatic weighing method comprises the steps of:

[0013] S01. During weighing, transfer the sample bottles in the designated area of ​​the sample bottle storage area to the mixing and stirring station for automatic mixing and stirring;

[0014] S02, transferring the mixed and stirred sample bottles to the automatic capping station for automatic capping;

[0015] S03, transferring the opened sample bottle to the automatic weighing station for automatic sampling and weighing;

[0016] S04, transferring the sampled bottles to the automatic capping station for automatic capping;

[0017] S05. Transfer the capped sample bottles to the designated area of ​​the sample bottle storage area.

[0018] As a further improvement of the above technical solution:

[0019] Before step S01, the sample bottles to be stored are placed in the automatic sample entry and exit station for identification, and then transferred to the designated area of ​​the sample bottle storage area.

[0020] The present invention also discloses an automatic weighing system, comprising a sample bottle transfer component, a sample bottle storage area, a mixing and stirring station, an automatic capping station and an automatic weighing station; the mixing and stirring station is equipped with a mixing and stirring component for mixing and stirring sample bottles; the automatic capping station is equipped with an automatic capping component for automatically opening and closing caps of sample bottles; the automatic weighing station is equipped with an automatic weighing component for automatically sampling and weighing sample bottles; the sample bottle transfer component is used to realize the transfer of sample bottles between the sample bottle storage area and each station.

[0021] As a further improvement of the above technical solution:

[0022] It also includes an automatic sample in and out station, on which an automatic sample in and out assembly is provided for realizing automatic in and out of sample bottles between the outside and the sample bottle storage area.

[0023] The automatic sample inlet and outlet assembly includes a lifting platform, and an automatic sample inlet and outlet tube connected to a conveying system is arranged above the lifting platform. The lifting platform is lifted up and down to convey the sample bottle to the conveying system through the automatic sample inlet and outlet tube, or to receive the sample bottle conveyed by the conveying system and the automatic sample inlet and outlet tube in sequence.

[0024] It also includes an artificial sample inlet and an artificial sample outlet. The artificial sample inlet is provided with an identification component for identifying the sample bottle; the artificial sample outlet is provided with a detection component for detecting whether the sample bottle is blocked.

[0025] The automatic capping assembly comprises a sample bottle fixing unit, which is used to fix the bottle body of the sample bottle placed at a predetermined capping position;

[0026] A rotating head, installed above the predetermined capping position, for clamping the cap of the sample bottle;

[0027] A rotation driving unit, connected to the rotating head, for driving the rotating head to rotate, thereby driving the bottle caps clamped in the rotating head to rotate to perform the cap opening or cap closing operation;

[0028] A fixed bracket for mounting the rotary head and the rotary drive unit;

[0029] The lifting drive unit is used to drive the fixed bracket to move up and down, thereby driving the rotating head to move up and down to achieve the separation and combination of the bottle cap and the bottle body.

[0030] The rotating head comprises a body having a top wall and a peripheral wall, the bottom of the body forms an opening for accommodating a bottle cap; a cap clamping unit for clamping the bottle cap is arranged in the circumferential direction of the peripheral wall.

[0031] The card cover unit comprises a plurality of spring plungers distributed in the circumferential direction of the peripheral wall.

[0032] The inner surface of the top wall is provided with a friction disk for increasing the friction with the bottle cap.

[0033] The sample bottle fixing unit comprises a telescopic member located at one side of the predetermined screw-capping position, and is used for cooperating with the side wall at the predetermined screw-capping position to clamp the bottle body.

[0034] A lifting unit is arranged below the fixed bracket, which is used to slowly lift the fixed bracket upwards during the process of screwing the cover to open the cover, and to offset the downward pressure of the lifting drive unit during the process of screwing the cover to close the cover.

[0035] The fixed bracket is provided with a bottle cap detection unit for detecting whether the rotating head contains a bottle cap.

[0036] The bottle cap detection unit comprises a bottle cap detection piece, which is mounted on the fixed bracket, and a penetrating detection hole is arranged at a position of the bottle cap detection piece facing the rotating head.

[0037] A torque coupling is provided between the rotary drive unit and the rotary head, and is used to control the tightening force of the rotary drive unit to be within a preset range.

[0038] The automatic weighing component comprises

[0039] A vibrating feeder for conveying a sample by continuous vibration and a sampling assembly for adding a quantitative sample to the vibrating feeder;

[0040] The vibrating feeder comprises: a guide trough for carrying and conveying samples, and a vibrator connected to the guide trough for driving the guide trough to vibrate so that the samples in the guide trough are conveyed forward;

[0041] The sampling assembly comprises: a sample bottle assembly for holding a sample; and

[0042] The sample spoon assembly is used to reach into the sample bottle assembly to take out a quantitative sample, and move horizontally to pour the taken out quantitative sample into the material guide trough.

[0043] The sample spoon assembly comprises:

[0044] A sample spoon for taking quantitative samples;

[0045] A first rotating assembly for mounting a sample spoon and driving the sample spoon to rotate for taking and pouring samples; and

[0046] The first horizontal moving assembly is used for installing the sample spoon and the first rotating assembly, and driving the sample spoon and the first rotating assembly to move horizontally.

[0047] The sample bottle assembly comprises:

[0048] Sample bottles for holding samples;

[0049] a clamping assembly for clamping a sample bottle; and

[0050] A second rotating assembly is used for driving the clamping assembly to rotate the sample bottle to an inclined state so that the sample spoon assembly can extend into the sample bottle for sampling.

[0051] It also includes a sliding component for driving the vibrating feeder to slide between a feeding station and a cleaning station; the cleaning station is provided with a cleaning component that slides along the conveying direction of the guide trough to clean the residual sample in the guide trough.

[0052] The cleaning assembly comprises: a guide rail arranged along the conveying direction of the guide trough;

[0053] a purge unit slidably disposed on the guide rail; and

[0054] A receiving container located below the discharge port of the material guide trough and used to receive waste samples in the material guide trough.

[0055] A dust collecting component for absorbing dust is slidably arranged on the guide rail and slides synchronously with the purge unit.

[0056] It also includes a cabinet, the sample bottle storage area is located in the middle of the cabinet, the automatic capping station is located at the upper part of the sample bottle storage area, the automatic weighing station is located at one side of the sample bottle storage area, and the mixing and stirring station is located at the other side of the sample bottle storage area; the sample bottle transfer assembly is located below the mixing and stirring station.

[0057] Compared with the prior art, the advantages of the present invention are:

[0058] The automatic weighing method and system of the present invention fully automatically processes a series of processes such as storage of sample bottles - mixing and stirring - opening the lid - weighing - closing the lid - storage, thereby improving the automation degree of automatic weighing and improving efficiency.

[0059] The automatic weighing system of the present invention, when adding samples, the automatic weighing component first takes a quantitative sample from the sample bottle component through the sample spoon component in the sampling component and adds it to the guide groove of the vibrating feeder, and then the vibrating feeder adds the sample in the guide groove slowly, evenly and finely into a designated container (such as a crucible) through continuous vibration. By weighing the crucible in real time, the vibrating feeder stops feeding when the sample reaches a predetermined weight, thereby achieving accurate sampling.

[0060] The automatic weighing system of the present invention has an automatic capping assembly for sample bottles. When the sample bottle is capped, the bottle body is fixed by the sample bottle fixing unit, and then the rotating head is driven to rotate by the rotating driving unit, so as to drive the bottle cap to rotate to close or separate the cap. The structure is simple and the operation is easy. A capping unit is arranged on the peripheral wall of the rotating head to clamp the bottle cap, and a friction disk is arranged on the top wall, so as to ensure that the bottle cap rotates synchronously with the rotating head and ensure the reliability of the capping. The capping unit adopts a spring plunger, and the structure is simple and easy to implement. A lifting unit is arranged below the fixed support. In the process of rotating the bottle cap to open the cap, the lifting driving unit provides a certain downward pressure, presses the bottle body, ensures the close contact between the friction disk and the bottle cap, loosens the bottle cap, stops the operation of the lifting driving unit, and then slowly lifts the fixed support upward by the lifting unit to adapt to the opening stroke of the bottle cap; in addition, in the process of rotating the bottle cap to open the cap, the lifting unit offsets the downward pressure of the lifting driving unit part; thereby ensuring the reliability of opening and closing the cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 It is a schematic diagram of the main structure of the system of the present invention.

[0062] Figure 2 This is a schematic diagram of the main structure of the system of the present invention without the cabinet.

[0063] Figure 3 It is a schematic structural diagram of the automatic sample inlet and outlet assembly of the present invention.

[0064] Figure 4 It is a schematic diagram of the structure of the automatic capping device in the present invention.

[0065] Figure 5 This is one of the structural schematic diagrams of the automatic weighing component in the present invention.

[0066] Figure 6 This is the second structural schematic diagram of the automatic weighing component in the present invention.

[0067] Figure 7 This is the third structural schematic diagram of the automatic weighing component in the present invention.

[0068] Figure 8 This is the fourth structural schematic diagram of the automatic weighing component in the present invention.

[0069] Fig. 9 It is a schematic diagram of the structure of the vibrating feeder in the present invention.

[0070] Fig.10 It is a schematic diagram of the three-dimensional structure of the material guide trough in the present invention.

[0071] The numbers in the figure indicate: 1. Sample bottle storage area; 101. Manual sample inlet; 102. Manual sample outlet; 2. Sample bottle transfer assembly; 3. Mixing and stirring assembly; 4. Automatic weighing assembly; 41. Vibrating feeder; 4101. Guide trough; 4102. Vibrator; 41021. Electromagnet; 41022. Armature; 41023. Vibrating plate; 4103. Lifting assembly; 4104. Sliding assembly; 42. Sampling assembly; 4201. Sample spoon assembly; 42011. Sample spoon; 42012. First rotating assembly; 42013. First horizontal moving assembly; 4202. Sample bottle assembly; 42022. Clamping assembly; 42023. Second rotating assembly; 42024. Second horizontal moving assembly; 43. Cleaning assembly; 4301, guide rail; 4302, cleaning brush; 4303, material receiving container; 5, automatic screw cap assembly; 51, sample bottle fixing unit; 5101, telescopic part; 52, fixed bracket; 53, rotating head; 5301, top wall; 5302, peripheral wall; 5303, friction disk; 54, rotation drive unit; 5401, rotation motor; 5402, torque coupling; 55, lifting drive unit; 56, capping unit; 5601, spring plunger; 57, lifting unit; 58, bottle cap detection unit; 5801, bottle cap detection part; 5802, detection hole; 6, automatic sample in and out assembly; 601, lifting platform; 602, automatic sample tube in and out; 7, sample bottle; 701, bottle body; 702, bottle cap. DETAILED DESCRIPTION

[0072] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0073] like Figure 1 to Figure 2 As shown, the automatic weighing method of this embodiment includes the steps of:

[0074] S01, during weighing, transfer the sample bottles 7 in the designated area of ​​the sample bottle storage area 1 to the mixing and stirring station for automatic mixing and stirring;

[0075] S02, transferring the mixed and stirred sample bottle 7 to the automatic capping station for automatic capping;

[0076] S03, transferring the opened sample bottle 7 to the automatic weighing station for automatic sampling and weighing;

[0077] S04, transferring the sample bottle 7 after sampling to the automatic capping station for automatic capping;

[0078] S05 , transferring the capped sample bottles 7 to a designated area of ​​the sample bottle storage area 1 .

[0079] The automatic weighing method of the present invention fully automatically processes a series of processes such as storage - mixing and stirring - opening the lid - weighing - closing the lid - storage of the sample bottle 7, thereby improving the automation degree of automatic weighing and improving efficiency.

[0080] In this embodiment, before step S01 , the sample bottles 7 to be stored are placed in the automatic sample entry and exit station for identification, and then transferred to the designated area of ​​the sample bottle storage area 1 , where each sample bottle 7 is stored in a partitioned manner to improve the orderliness of the storage of the sample bottles 7 .

[0081] like Figure 1 to Figure 2 As shown, the automatic weighing system of this embodiment includes a sample bottle transfer component 2 (such as a robot), a sample bottle storage area 1, a mixing and stirring station, an automatic capping station and an automatic weighing station; the mixing and stirring station is equipped with a mixing and stirring component 3 for mixing and stirring the sample bottles 7; the automatic capping station is equipped with an automatic capping component 5 for automatically opening and closing the sample bottles 7; the automatic weighing station is equipped with an automatic weighing component 4 for automatically sampling and weighing the sample bottles 7; the sample bottle transfer component 2 is used to realize the transfer of the sample bottles 7 between the sample bottle storage area 1 and the various stations.

[0082] The automatic weighing system of the present invention fully automatically processes a series of processes such as storage - mixing and stirring - opening the lid - weighing - closing the lid - storage of the sample bottle 7, thereby improving the automation degree of automatic weighing and improving efficiency.

[0083] In this embodiment, an automatic sample in and out station is also included, and an automatic sample in and out assembly 6 is provided on the automatic sample in and out station for realizing automatic in and out of the sample bottle 7 between the outside and the sample bottle storage area 1. Specifically, Figure 3 As shown, the automatic sample inlet and outlet assembly 6 includes a lifting platform 601, and an automatic sample inlet and outlet tube 602 connected to a conveying system (such as a pneumatic conveying system) is arranged above the lifting platform 601. The lifting platform 601 is lifted up and down to convey the sample bottle 7 to the conveying system through the automatic sample inlet and outlet tube 602, or to receive the sample bottle 7 conveyed by the conveying system and the automatic sample inlet and outlet tube 602 in sequence. Specifically, the automatic sample inlet and outlet station are provided with an automatic sample inlet and an automatic sample outlet, and the automatic sample inlet and outlet are both provided with an automatic sample inlet and an automatic sample outlet assembly 6. Of course, an automatic sample inlet and outlet assembly 6 can also be selected according to actual conditions to realize sample inlet and sample outlet.

[0084] In this embodiment, it also includes a manual sample inlet 101 and a manual sample outlet 102. The manual sample inlet 101 is provided with an identification component (such as a code reader and an induction switch) for identifying the sample bottle 7; the manual sample outlet 102 is provided with a detection component for detecting whether the sample bottle 7 is blocked. A hole is provided at the bottom of the manual sample outlet 102. The robot places the sample bottle 7 at the manual sample outlet 102, and the sample bottle 7 falls through the hole and onto the ground; or a cart is placed on the ground, and the sample bottle 7 falls into the cart; and the detection component senses whether the hole is blocked by the sample bottle 7. If the cart is full, another sample bottle 7 is placed at the manual sample outlet 102, and the sample bottle 7 cannot fall down. The detection component detects the bottle and reminds the customer to clean the cart.

[0085] like Figure 1 to Figure 2 As shown, it also includes a cabinet 8, a sample bottle storage area 1 is located in the middle of the cabinet 8, an automatic capping station is located in the upper part of the sample bottle storage area 1, an automatic weighing station is located on one side of the sample bottle storage area 1, and a mixing station is located on the other side of the sample bottle storage area 1; the sample bottle transfer component 2 is located below the mixing station; through the layout of the above stations, the compactness of the cabinet 8 structure is ensured, and at the same time, the optimized layout of each station can also improve the efficiency of transferring the sample bottle 7 between the stations. Specifically, in this embodiment, the number of automatic weighing components 4 is two, arranged up and down, to ensure speed matching with other links; in addition, the number of automatic capping components 5 is four, distributed horizontally; the number of each component is increased or decreased according to actual conditions.

[0086] like Figure 4 As shown, the sample bottle automatic capping assembly 5 in this embodiment includes a sample bottle fixing unit 51, which is used to fix the bottle body 701 of the sample bottle 7 placed at the predetermined capping position; a rotating head 53, which is installed just above the predetermined capping position, and is used to cover and clamp the bottle cap 702 of the sample bottle 7; a rotating drive unit 54, which is connected to the rotating head 53, and is used to drive the rotating head 53 to rotate, and drive the bottle cap 702 clamped in the rotating head 53 to rotate to perform the opening or closing operation; a fixed bracket 52, which is used to install the rotating head 53 and the rotating drive unit 54; a lifting drive unit 55, which is installed on the side of a fixed seat, and is used to drive the fixed bracket 52 to rise and fall, thereby driving the rotating head 53 to rise and fall, so as to realize the separation and combination of the bottle cap 702 and the bottle body 701. After the bottle body 701 is fixed by the sample bottle fixing unit 51, the rotating head 53 is driven to rotate by the rotating drive unit 54, and the bottle cap 702 is driven to rotate to perform the closing or separating operation, which has a simple structure and is easy to operate.

[0087] In this embodiment, the rotating head 53 includes a body having a top wall 5301 and a peripheral wall 5302, and the bottom of the body is formed with an opening, similar to the shape of a bottle cap 702, wherein the opening is used to cover the bottle cap 702; wherein a card cover unit 56 for clamping the bottle cap 702 is provided in the circumferential direction of the peripheral wall 5302. Specifically, the card cover unit 56 includes a plurality of spring plungers 5601 (also called ball head plungers, the specific structure is a conventional structure) distributed in the circumferential direction of the peripheral wall 5302. The number of the spring plungers 5601 is 4 to 8, which are evenly distributed in the circumferential direction of the peripheral wall 5302. When the rotating head 53 covers the bottle cap 702 and presses downward, the ball head of the spring plunger 5601 presses the peripheral side of the bottle cap 702 under the elastic force of the spring, thereby forming a certain clamping force on the bottle cap 702. Of course, the number of the spring plungers 5601 can be selected according to the size or type of the bottle cap 702 to ensure a suitable clamping force. Furthermore, a friction disk 5303 (such as a disk made of a material with a high friction coefficient) is provided on the inner surface of the top wall 5301 of the rotating head 53 to increase the friction with the bottle cap 702 and ensure that the bottle cap 702 rotates synchronously with the rotating head 53 without slipping.

[0088] In this embodiment, a baffle (or other fixed object) is provided on one side of the predetermined screw-on position; one side of the sample bottle 7 is placed close to the baffle; the sample bottle fixing unit 51 includes a telescopic member 5101 located on the other side of the predetermined screw-on position, and the telescopic end of the telescopic member 5101 is extended to clamp the bottle body 701 of the sample bottle 7 between the baffle and the telescopic end, thereby fixing the bottle body 701. Specifically, the telescopic member 5101 can adopt a telescopic oil cylinder, an air cylinder or a motor, preferably an air cylinder. In addition, the lifting drive unit 55 also adopts a telescopic oil cylinder, an air cylinder or a motor, preferably an air cylinder; the rotation drive unit 54 adopts a rotary motor 5401.

[0089] In this embodiment, since the cylinder used by the lifting drive unit 55 has a high lifting speed, the bottle cap 702 is easily disengaged from the rotating head 53 when the bottle cap 702 is rotated to open the cap; therefore, a lifting unit 57 (such as a small telescopic cylinder) is provided below the fixed bracket 52, and during the process of rotating the bottle cap 702 to open the cap, the lifting drive unit 55 provides a certain downward pressure to press the bottle body 701, ensure the close contact between the friction disk 5303 and the bottle cap 702, loosen the bottle cap 702, and stop the operation of the lifting drive unit 55; then the fixed support is slowly lifted upward by the lifting unit 57 to adapt to the opening stroke of the bottle cap 702, thereby ensuring the reliability of the opening; in addition, during the process of rotating the bottle cap 702 to open the cap, the lifting unit 57 can offset part of the downward pressure of the lifting drive unit 55.

[0090] In this embodiment, a bottle cap detection unit 58 for detecting whether there is a bottle cap 702 in the rotating head 53 is provided on the fixed bracket 52. Specifically, the bottle cap detection unit 58 includes a bottle cap detection member 5801, which is installed on the fixed bracket 52. A penetrating detection hole 5802 is provided at the position of the bottle cap detection member 5801 facing the capping head. The bottle cap detection member 5801 detects whether there is a bottle cap 702 in the rotating head 53 through the detection hole 5802, thereby determining whether the opening or closing of the cap is successful.

[0091] In this embodiment, a torque coupling 5402 is provided between the rotation driving unit 54 and the rotation head 53, which is used to control the tightening force of the rotation driving unit 54 to be within a preset range, thereby ensuring a normal pre-tightening force of the bottle cap 702 after closing the cap.

[0092] Specifically, the automatic capping process includes the following steps:

[0093] S01, first, place the sample bottle 7 at a predetermined capping position and fix it by the sample bottle fixing unit 51;

[0094] S02, the lifting drive unit 55 drives the rotating head 53 on the fixed bracket 52 to descend, and the bottle cap 702 of the sample bottle 7 is clamped in the rotating head 53; the rotating drive unit 54 drives the rotating head 53 to rotate forward or reverse, driving the bottle cap 702 to rotate, thereby realizing the opening or closing of the bottle cap 702.

[0095] After the bottle body 701 is fixed by the sample bottle fixing unit 51, the rotating head 53 is driven to rotate by the rotating driving unit 54, thereby driving the bottle cap 702 to rotate to perform the capping or uncapping operation, which is simple and easy to operate.

[0096] In this embodiment, in step S02, before the bottle cap 702 of the sample bottle 7 is clamped on the rotating head 53, the rotation drive unit 54 drives the rotating head 53 to rotate forward or reversely. When the bottle cap 702 of the sample bottle 7 is clamped in the rotating head 53, the sample cap 702 will have a certain clamping force. If the rotation drive unit 54 is started after the bottle cap 702 is clamped (the rotation drive unit 54 is mostly a motor), it may cause the starting torque of the rotation drive unit 54 to be less than the clamping force and fail to drive the rotating head 53 to rotate. Therefore, before the bottle cap 702 of the sample bottle 7 is clamped on the rotating head 53, the rotation drive unit 54 drives the rotating head 53 to rotate forward or reversely (such as lifting and lowering and rotating synchronously), to ensure that the bottle cap 702 is opened smoothly.

[0097] The automatic capping method is further described below in conjunction with a specific embodiment:

[0098] (1) All units are in a ready state;

[0099] (2) placing the sample bottle 7 (including the bottle cap 702) at the predetermined capping position;

[0100] (3) Clamping the bottle body 701 by the sample bottle fixing unit 51;

[0101] (4) The lifting drive unit 55 drives the rotating head 53 to descend, and the bottle cap 702 of the sample bottle 7 is clamped in the rotating head 53;

[0102] (5) The rotation drive unit 54 drives the rotating head 53 to rotate and loosen the bottle cap 702. During this process, the lifting drive unit 55 provides downward pressure to ensure that there is sufficient friction between the friction disk 5303 of the rotating head 53 and the bottle cap 702, so that the bottle cap 702 rotates synchronously with the rotating head 53. Figure 4 As shown, when the rotary drive unit 54 drives the rotary head 53 to rotate forward to drive the bottle cap 702 to rotate so as to open the bottle cap 702, the lifting drive unit 55 moves downward to provide a certain downward pressure to ensure the close contact between the friction plate 5303 and the bottle cap 702. At the same time, a lifting unit 57 arranged under the fixed support 52 slowly lifts the fixed support upward during the process of rotating the cap to open the cap so as to open the cap smoothly.

[0103] (6) When the opening of the bottle cap is completed, the lifting drive unit 55 continues to rise, driving the rotating head 53 to rise. At this time, the bottle cap 702 is clamped in the rotating head 53 through the spring plunger 5601, so that the bottle cap 702 is separated from the bottle body 701. After the rotating head 53 is raised to the right position, the bottle cap detection member 5801 senses whether there is a bottle cap 702 in the rotating head 53 through the detection hole 5802. If there is, it is considered that the opening of the bottle cap is successful; if there is no bottle cap 702, it is considered that the opening of the bottle cap fails, and the opening of the bottle cap is continued according to the above steps.

[0104] (7) The sample bottle fixing unit 51 releases the sample bottle 7. At this time, the sample bottle 7 without the bottle cap 702 is taken away, and the sampling operation is carried out;

[0105] (8) After sampling, the sample bottle 7 is placed at a predetermined capping position, and then the bottle body 701 is clamped by the sample bottle fixing unit 51;

[0106] (9) The lifting drive unit 55 drives the rotating head 53 to descend, and clamps the bottle cap 702 of the sample bottle 7 in the rotating head 53; the rotating drive unit 54 drives the rotating head 53 to rotate and tighten the bottle cap 702; during this process, the lifting drive unit 55 provides downward pressure to ensure that there is sufficient friction between the friction disk 5303 of the rotating head 53 and the bottle cap 702, so that the bottle cap 702 rotates synchronously with the rotating head 53; Figure 4As shown, when the rotary drive unit 54 drives the rotary head 53 to rotate in the opposite direction to drive the bottle cap 702 to rotate so as to close the bottle cap 702, a lifting unit 57 disposed below the fixed bracket 52 offsets the downward pressure of the lifting drive unit 55 during the process of rotating the cap for closing the cap; wherein the torque coupling 5402 can control the tightening force within a certain range, thereby ensuring a suitable tightening force after the bottle cap 702 is closed;

[0107] (10) The lifting drive unit 55 drives the rotating head 53 to rise. Although the bottle cap 702 is stuck in the rotating head 53 by the spring plunger 5601 at this time, the bottle cap 702 is connected to the bottle body 701 through a thread, and the bottle body 701 is clamped by the sample bottle fixing unit 51; the lifting drive unit 55 forcibly drives the rotating head 53 to rise, and separates the rotating head 53 from the bottle cap 702. After the rotating head 53 is raised to the right position, the bottle cap detection part 5801 senses whether there is a bottle cap 702 in the rotating head 53 through the detection hole 5802. If not, it is considered that the capping is successful. If not, it is considered that the capping fails, and the capping operation is performed according to the above steps;

[0108] (11) The sample bottle fixing unit 51 releases the sample bottle 7 and transfers the sample bottle 7 with the bottle cap 702 .

[0109] like Figures 5 to 10 As shown, the automatic weighing component 4 in this embodiment includes a vibrating feeder 41 for conveying samples by continuous vibration and a sampling component 42 for adding quantitative samples to the vibrating feeder 41; wherein the vibrating feeder 41 includes: a material guide trough 4101 for carrying and conveying samples, and a vibrator 4102 connected to the material guide trough 4101 and used to drive the material guide trough 4101 to vibrate so that the sample in the material guide trough 4101 is conveyed forward, and the vibrator 4102 is installed on a fixed bracket; the sampling component 42 includes: a sample bottle component 4202 for holding samples; and a sample spoon component 4201 for reaching into the sample bottle component 4202 to take out quantitative samples, and moving horizontally to pour the taken out quantitative samples into the material guide trough 4101. When adding samples, first use the sample spoon assembly 4201 in the sampling assembly 42 to take a quantitative sample from the sample bottle assembly 4202 and add it to the guide groove 4101 of the vibrating feeder 41. Then, the vibrating feeder 41 continuously vibrates to slowly, evenly and finely add the sample in the guide groove 4101 to a designated container (such as a crucible). By weighing the crucible in real time, the vibrating feeder 41 stops feeding when the sample reaches a predetermined weight, thereby achieving accurate sampling.

[0110] In this embodiment, the sample spoon assembly 4201 includes a sample spoon 42011 for taking a quantitative sample, a first rotating assembly 42012 for mounting the sample spoon 42011 and driving the sample spoon 42011 to rotate for sampling and pouring the sample; and a first horizontal moving assembly 42013 for mounting the sample spoon 42011 and the first rotating assembly 42012, and driving the sample spoon 42011 and the first rotating assembly 42012 to move horizontally. The capacity of the sample spoon 42011 is determined according to needs, and its specific structure is the same as that of the conventional sample spoon 42011. The first rotating component 42012 includes a circular base and a rotating motor. One end of the sample spoon 42011 is mounted on the base and is horizontal, and the base is mounted on the output shaft of the rotating motor. The rotation of the rotating motor drives the base to rotate, so that the sample spoon 42011 rotates synchronously, so that the rotation of the sample spoon 42011 can be realized to pour the sample into the material guide trough 4101; in addition, the first horizontal moving component 42013 is used to drive the sample spoon 42011 to move horizontally between the material taking position (the position where the sample bottle 7 in the sample bottle assembly 4202 is inserted for sampling) and the material pouring position (the position where the sample spoon 42011 is located above the material guide trough 4101 for adding samples).

[0111] In this embodiment, the sample bottle assembly 4202 includes a sample bottle 7 for holding a sample; a clamping assembly 42022 for clamping the sample bottle 42021; and a second rotating assembly 42023 for driving the clamping assembly 42022 to rotate the sample bottle 7 to an inclined state so that the sample spoon assembly 4201 can extend into the sample bottle 7 for sampling. The clamping assembly 42022 includes a mounting seat, in which the sample bottle 7 is placed, and is clamped on the mounting seat by a clamping member (such as a locking screw) on the side of the mounting seat; the second rotating assembly 42023 includes a rotating motor, and the mounting seat is mounted on the output end of the rotating motor. The rotating motor drives the sample bottle 7 on the mounting seat to rotate, so that the upright state changes to an inclined or horizontal state 7, so that the sample spoon 42011 can extend into the sample bottle 7 for sampling; of course, in other embodiments, the sample bottle 7 can also be clamped and mounted horizontally on the mounting seat, so that the second rotating assembly 42023 can be omitted. In addition, a second horizontal moving component 42024 may be provided for driving the sample bottle 7 on the clamping component 42022 to translate, thereby facilitating adjustment of the position of the sample bottle 7 for sampling.

[0112] In this embodiment, a sliding assembly 4104 is also included for driving the vibrating feeder 41 to slide between the feeding station and the cleaning station; wherein the feeding station of the vibrating feeder 41 realizes the sample loading; after the loading is completed, the residual sample in the guide trough 4101 needs to be cleaned, and at this time, the vibrating feeder 41 is driven by the sliding assembly 4104 to move from the feeding station to the cleaning station, wherein the cleaning station is provided with a cleaning assembly 43 that slides along the conveying direction of the guide trough 4101 to clean the residual sample in the guide trough 4101. Specifically, the cleaning assembly 43 includes: a guide rail 4301 arranged along the conveying direction of the guide trough 4101; a purge unit (such as a cleaning brush 4302 or a blowing assembly) slidably arranged on the guide rail 4301, preferably a cleaning brush 4302; and a receiving container 4303 located below the discharge port of the guide trough 4101 for receiving waste samples in the guide trough 4101. When the vibrating feeder 41 is located at the cleaning station, the cleaning brush 4302 in the cleaning assembly 43 descends and slides along the arrangement direction of the guide trough 4101 to clean the residual sample in the guide trough 4101 into the receiving container 4303 (such as a receiving hopper); in addition, in order to avoid dust generated during cleaning, a dust suction assembly (such as a vacuum cleaner) that slides synchronously with the cleaning brush 4302 is slidably arranged on the guide rail 4301 to suck away the dust. Of course, in other embodiments, a dust suction assembly can also be directly used instead of the cleaning brush 4302 to reduce dust.

[0113] like Figure 4 As shown, in this embodiment, the vibrator 4102 includes a control unit, an electromagnet 41021 and an armature 41022, wherein the armature 41022 is fixedly mounted on a vibration plate 41023, and the control unit controls the electromagnet 41021 to drive the guide trough 4101 on the vibration plate 41023 to move synchronously by controlling the amplitude and / or vibration frequency, thereby adjusting the sample discharge speed.

[0114] like Figure 5 As shown, in this embodiment, the material guide trough 4101 is a U-shaped trough. Of course, in other embodiments, material guide troughs 4101 of other shapes such as V-shaped can also be used; specifically, the cross-section of the U-shaped material guide trough 4101 in the axial direction is truncated cone-shaped, and the width of the inlet of the material guide trough 4101 is greater than the width of the outlet. Since the width at the inlet is wider, it is convenient to add samples, and the width at the outlet is narrower, which is convenient for adding samples to sample bottles 7 or crucibles with smaller diameters. In addition, in other embodiments, the material guide trough 4101 can also be arranged at an angle, such as tilted downward along the sample conveying direction, to ensure smooth sample conveying and facilitate the cleaning of residual samples.

[0115] In this embodiment, the vibrating feeder 41 is mounted on a lifting assembly 4103 (such as a lifting cylinder or a lifting oil cylinder, etc.), and the lifting assembly 4103 is lifted and lowered, driving the vibrating feeder 41 to lift and lower as a whole, thereby adjusting the feeding height of the guide trough 4101 (such as the height difference between the discharge port and the crucible), and improving the accuracy of sample addition. In addition, the lifting assembly 4103 is mounted as a whole on the sliding assembly 4104, and through horizontal movement, drives the vibrating feeder 41 to translate as a whole, thereby adjusting the discharge port of the guide trough 4101 to translate left and right, realizing sample addition at different positions of the same crucible, and ensuring the uniformity of the thickness of the sample in the crucible.

[0116] The automatic sample adding and weighing method of the present invention comprises the following steps:

[0117] S01, the sampling component 42 adds a sample of a specified weight into the vibrating feeder 41;

[0118] S02, the vibrating feeder 41 delivers the sample to the designated container by continuous vibration, and weighs the designated container in real time;

[0119] S03. When the sample in the designated container reaches a predetermined weight, the vibration of the vibration feeder 41 is stopped.

[0120] In this embodiment, the specified weight in step S01 is 1 to 15 times the predetermined weight in step S03. Of course, the specified weight can be adjusted according to the actual conditions such as the added weight and the added accuracy. If 1g of coal sample is to be added to the crucible, first take out about 3g of sample from the 100g sample bottle 7 through the sample spoon 42011, and then deliver 1±0.1g of sample to the crucible through the vibrating feeder 41; or if 50mg of coal sample is to be added to the crucible, first take out about 500±5mg of sample from the sample bottle 7 through the sample spoon 2011, and then deliver 50mg of sample to the crucible through the vibrating feeder 41. Or if 10g of coal sample is to be added to the crucible, first take out about more than 10g (such as 11g) of sample from the sample bottle 7 through the sample spoon 42011, and then deliver 10±1g of sample to the crucible through the vibrating feeder 41.

[0121] The automatic sample adding and weighing method in this embodiment is divided into two steps: rough sampling and precise feeding. That is, firstly, a quantitative sample is taken from the sample bottle assembly 4202 by the sample spoon assembly 4201 in the sampling assembly 42 and added to the guide groove 4101 of the vibrating feeder 41 (rough sampling). Then, the vibrating feeder 41 continuously vibrates to slowly, evenly and finely add the sample in the guide groove 4101 to a designated container (such as a crucible). By weighing the crucible in real time, the feeding of the vibrating feeder 41 is stopped when the sample reaches a predetermined weight, thereby achieving precise sampling.

[0122] like Figures 5 to 8As shown in the figure, the specific sample addition process is as follows:

[0123] 1. First, the sample spoon 42011 is driven by the first horizontal moving component 42013 to move from Figure 1 The pouring position shown is moved to the material taking position 4, at which time, the sample spoon 42011 extends to the bottom of the sample in the sample bottle 7, and the sample automatically falls into the sample spoon 42011;

[0124] 2. Driven by the first horizontal moving component 42013, the sample spoon 42011 moves from the material taking position 4 to the material pouring position 4, and the sample in the sample spoon 42011 is poured into the material guide trough 4101 by the rotation of the first rotating component 42012; of course, the above steps can be repeated according to the required sample weight until the specified weight of the sample is added into the material guide trough 4101;

[0125] 3. The vibrating feeder 41 vibrates, so that the sample in the guide trough 4101 flows slowly, evenly and accurately into the crucible, until the sample in the crucible reaches a predetermined weight, and the vibration of the vibrating feeder 41 is stopped;

[0126] 4. After the sample addition is completed, perform the cleanup operation.

[0127] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. An automatic weighing system, characterized in that: The invention comprises a sample bottle transfer component (2), a sample bottle storage area (1), a mixing and stirring station, an automatic capping station and an automatic weighing station; the mixing and stirring station is provided with a mixing and stirring component (3) for mixing and stirring the sample bottles (7); the automatic capping station is provided with an automatic capping component (5) for automatically opening and closing the caps of the sample bottles (7); the automatic weighing station is provided with an automatic weighing component (4) for automatically sampling and weighing the sample bottles (7); the sample bottle transfer component (2) is used to realize the transfer of the sample bottles (7) between the sample bottle storage area (1) and the various stations; The automatic capping assembly (5) comprises a sample bottle fixing unit (51) for fixing the bottle body (701) of the sample bottle (7) placed at a predetermined capping position; A rotating head (53), installed above the predetermined capping position, and used for clamping the bottle cap (702) of the sample bottle (7); A rotation driving unit (54) connected to the rotating head (53) and used to drive the rotating head (53) to rotate, thereby driving the bottle cap (702) held in the rotating head (53) to rotate to perform a cap opening or cap closing operation; A fixed bracket (52) for mounting a rotating head (53) and a rotating drive unit (54); A lifting drive unit (55) is used to drive the fixed support (52) to move up and down, thereby driving the rotating head (53) to move up and down, so as to realize the separation and combination of the bottle cap (702) and the bottle body (701); A lifting unit (57) is provided below the fixed bracket (52) for slowly lifting the fixed bracket (52) upwards during the process of screwing the lid open, and for offsetting the downward pressure of the lifting drive unit (55) during the process of screwing the lid close. The automatic weighing component (4) comprises A vibrating feeder (41) for conveying a sample by continuous vibration and a sampling assembly (42) for adding a quantitative sample to the vibrating feeder (41); The vibrating feeder (41) comprises: a guide trough (4101) for carrying and conveying samples, and a vibrator (4102) connected to the guide trough (4101) and used to drive the guide trough (4101) to vibrate so that the sample in the guide trough (4101) is conveyed forward; The sampling assembly (42) comprises: a sample bottle assembly (4202) for holding a sample; and A sample spoon assembly (4201) is used to reach into the sample bottle assembly (4202) to take out a quantitative sample, and to move horizontally to pour the taken out quantitative sample into the guide trough (4101); The material guide groove (4101) is a U-shaped groove, the cross section of the material guide groove (4101) in the axial direction is truncated cone-shaped, and the width of the material inlet of the material guide groove (4101) is greater than the width of the material outlet.

2. The automatic weighing system according to claim 1, characterized in that: It also includes an automatic sample in and out station, on which an automatic sample in and out assembly (6) is provided for automatically entering and exiting sample bottles (7) between the outside and the sample bottle storage area (1).

3. The automatic weighing system according to claim 2, characterized in that: The automatic sample inlet and outlet assembly (6) comprises a lifting platform (601), and an automatic sample inlet and outlet tube (602) connected to a conveying system is arranged above the lifting platform (601). The lifting platform (601) is lifted up and down to convey the sample bottle (7) to the conveying system via the automatic sample inlet and outlet tube (602), or to receive the sample bottle (7) conveyed sequentially via the conveying system and the automatic sample inlet and outlet tube (602).

4. The automatic weighing system according to any one of claims 1 to 3, characterized in that: It also comprises an artificial sample inlet (101) and an artificial sample outlet (102); the artificial sample inlet (101) is provided with an identification component for identifying the sample bottle (7); the artificial sample outlet (102) is provided with a detection component for detecting whether the sample bottle (7) is blocked.

5. The automatic weighing system according to claim 1, characterized in that: The rotating head (53) comprises a body having a top wall (5301) and a peripheral wall (5302), wherein the bottom of the body forms an opening for accommodating a bottle cap (702); a cap clamping unit (56) for clamping the bottle cap (702) is provided in the circumferential direction of the peripheral wall (5302).

6. The automatic weighing system according to claim 5, characterized in that: The card cover unit (56) includes a plurality of spring plungers (5601) distributed in the circumferential direction of the peripheral wall (5302).

7. The automatic weighing system according to claim 5, characterized in that: The inner surface of the top wall (5301) is provided with a friction disk (5303) for increasing the friction force with the bottle cap (702).

8. The automatic weighing system according to claim 1, characterized in that: The sample bottle fixing unit (51) comprises a telescopic member (5101) located on one side of the predetermined screw-on capping position, and is used to cooperate with the side wall at the predetermined screw-on capping position to achieve clamping of the bottle body (701).

9. The automatic weighing system according to claim 1, characterized in that: The fixed bracket (52) is provided with a bottle cap detection unit (58) for detecting whether a bottle cap (702) is contained in the rotating head (53).

10. The automatic weighing system according to claim 9, characterized in that: The bottle cap detection unit (58) comprises a bottle cap detection member (5801), wherein the bottle cap detection member (5801) is mounted on the fixed bracket (52), and a penetrating detection hole (5802) is provided at a position of the bottle cap detection member (5801) directly opposite to the rotating head (53).

11. The automatic weighing system according to claim 1, characterized in that: A torque coupling (5402) is provided between the rotary drive unit (54) and the rotary head (53) and is used to control the tightening force of the rotary drive unit (54) to be within a preset range.

12. The automatic weighing system according to claim 11, characterized in that: The sample spoon assembly (4201) comprises: a sample spoon (42011) for taking a quantitative sample; A first rotating assembly (42012) for mounting the sample spoon (42011) and driving the sample spoon (42011) to rotate for sampling and pouring; and A first horizontal moving component (42013) is used for installing the sample spoon (42011) and the first rotating component (42012), and driving the sample spoon (42011) and the first rotating component (42012) to move horizontally.

13. The automatic weighing system according to claim 12, characterized in that: The sample bottle assembly (4202) comprises: A sample bottle (7) for holding a sample; A clamping assembly (42022) for clamping a sample bottle (7); and A second rotating component (42023) is used to drive the clamping component (42022) to rotate the sample bottle (7) to an inclined state so that the sample spoon component (4201) can extend into the sample bottle (7) for sampling.

14. The automatic weighing system according to claim 1, characterized in that: It also includes a sliding component (4104) for driving the vibrating feeder (41) to slide between a feeding station and a cleaning station; the cleaning station is provided with a cleaning component (43) that slides along the conveying direction of the guide trough (4101) to clean the residual sample in the guide trough (4101).

15. The automatic weighing system according to claim 14, characterized in that: The cleaning assembly (43) comprises: a guide rail (4301) arranged along the conveying direction of the material guide trough (4101); a purge unit slidably disposed on the guide rail (4301); and A receiving container (4303) is located below the discharge port of the material guide trough (4101) and is used to receive waste samples in the material guide trough (4101).

16. The automatic weighing system according to claim 15, characterized in that: A dust collecting component for absorbing dust is slidably arranged on the guide rail (4301) and slides synchronously with the purge unit.

17. The automatic weighing system according to any one of claims 1 to 3, characterized in that: The cabinet (8) further comprises a sample bottle storage area (1) located in the middle of the cabinet (8), the automatic capping station located in the upper part of the sample bottle storage area (1), the automatic weighing station located on one side of the sample bottle storage area (1), and the mixing and stirring station located on the other side of the sample bottle storage area (1); the sample bottle transfer assembly (2) is located below the mixing and stirring station.

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