Uncovering sample pouring mechanism and sample transfer device

Abstract

The utility model discloses an uncovering sample pouring mechanism and a sample transfer device.The uncovering sample pouring mechanism comprises a second driving assembly and a third driving assembly, and the second driving assembly clamps a bottle cap of a sample bottle containing a sample so as to drive the sample bottle to move up and down and drive the sample bottle to rotate along the central axis of the sample bottle; and the third driving assembly clamps the bottle body of the sample bottle to fix the bottle body or drive the bottle body to rotate and pour the sample to the transfer unit. According to the uncovering sample pouring mechanism, samples in the sample bottles can be mixed and then poured into the transfer unit, and the problem of low sample representativeness caused by single sampling point when a clamping jaw or a sampling spoon is directly used for sampling is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of sample transfer, and in particular to a cover opening and sample pouring mechanism and a sample transfer device. Background Art

[0002] When testing materials such as coal, ore, biomass, and pharmaceuticals, samples are typically powdered and weighed within a certain mass range according to specific testing methods. Existing automated sample transfer mechanisms sometimes use grippers or sampling spoons, while others employ vibratory drop-out methods. These limited sampling points can easily lead to stratification and segregation of samples of varying particle sizes, resulting in poorly representative samples. Utility Model Content

[0003] The utility model provides a cover opening and sample pouring mechanism and a sample transferring device, so as to solve the technical problem of low sampling representativeness in the prior art.

[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the present utility model is as follows:

[0005] In a first aspect of the present invention, a cover-opening and sample-pouring mechanism is provided, comprising a second drive assembly and a third drive assembly, wherein the second drive assembly clamps the bottle cap of a sample bottle containing a sample to drive the sample bottle to move up and down and to drive the sample bottle to rotate along its central axis, and the third drive assembly clamps the bottle body of the sample bottle to fix the bottle body or to drive the bottle body to rotate and pour the sample to a transfer unit.

[0006] Furthermore, the second drive assembly includes a fourth drive part, a fifth drive part and a first clamp, the output end of the fourth drive part is connected to the fifth drive part to make the fifth drive part move up and down, the output end of the fifth drive part is connected to the first clamp to drive the first clamp to move up and down and rotate, and the first clamp clamps the bottle cap; the fifth drive part includes a motor, a rotating shaft, a bearing, a rotating sleeve and an elastic member, the output end of the motor is connected to the rotating shaft, the bearing sleeve is arranged on the rotating shaft, a sliding groove is formed on the rotating shaft, the rotating sleeve is arranged at the end of the rotating shaft and moves along the sliding groove, the first clamp is connected to the rotating sleeve, and the elastic member is clamped between the bearing and the rotating sleeve to buffer the movement of the first clamp to open or close the bottle cap.

[0007] Furthermore, the third driving component includes a sixth driving part, a clamping part and a rotating plate, the output end of the sixth driving part is connected to the rotating plate to rotate the rotating plate, the clamping part includes a fixed part and a second clamping claw, the fixed part is fixedly arranged on the rotating plate, the sample bottle is placed on the fixed part and the second clamping claw clamps the bottle body of the sample bottle.

[0008] Furthermore, the cover opening and sample pouring mechanism further includes a second weighing part, the transfer unit is placed on the second weighing part, and the third driving assembly drives the bottle body to rotate so that the sample in the bottle body is transferred to the transfer unit.

[0009] Furthermore, the cover opening and sample pouring mechanism also includes a code scanning mechanism, and the second driving component drives the sample bottle to rotate along its central axis so that the QR code on the sample bottle is aligned with the code scanning mechanism to record the sample bottle information.

[0010] The second aspect of the present invention provides a sample transfer device, including a sample blanking mechanism, a sample transfer mechanism, a cleaning mechanism and the above-mentioned cover opening and pouring mechanism, wherein the sample transfer mechanism transfers the transfer unit from the cover opening and pouring mechanism to the sample blanking mechanism, and transfers the transfer unit from the sample blanking mechanism to the cleaning mechanism.

[0011] Furthermore, the cleaning mechanism includes a cleaning tank, a lifting assembly, a fixed seat and a purge nozzle, the lifting assembly is installed in the cleaning tank, the fixed seat is arranged on the lifting assembly to move the fixed seat, the transfer unit is placed on the fixed seat, and the purge nozzle is arranged in the cleaning tank to clean the transfer unit.

[0012] Furthermore, the sample dropping mechanism includes a support seat, a stirring assembly and a first drive assembly, and the transfer unit is placed on the support seat; the stirring assembly includes a stirring part and a first drive part and a second drive part, the stirring part is located above the transfer unit, the output end of the first drive part is connected to the stirring part to move the stirring part up and down, and the output end of the second drive part is connected to the stirring part to rotate the stirring part; the transfer unit includes a sample bucket, a baffle and a rotating shaft, a dropping hole is formed on the bottom end surface of the sample bucket, a flange is formed on the sample bucket, the rotating shaft passes through the flange and the baffle so that the baffle rotates along the rotating shaft to cover or open the dropping hole; the first drive assembly is connected to an end of the baffle away from the dropping hole.

[0013] Furthermore, the flange extends along the circumference of the sample bucket.

[0014] Furthermore, a notch is formed at the bottom end of the sample bucket, and one end of the baffle extends into the notch to block the drop hole; the baffle rotates to abut against the two end surfaces corresponding to the notch on the sample bucket.

[0015] Furthermore, the first driving assembly includes a third driving part, a sliding part and a slide rail, the output end of the third driving part is connected to the sliding part so that the sliding part moves on the slide rail; the end of the baffle away from the blanking hole is connected to the sliding part.

[0016] Furthermore, the sliding part includes a slider and a fixing groove, the output end of the third driving part is connected to the slider, the fixing groove is installed on the slider, and the end of the baffle away from the blanking hole is fixed in the fixing groove.

[0017] Furthermore, the sample dropping mechanism also includes a turntable, a weighing mechanism and a crucible, a plurality of through holes are formed on the turntable, each of the crucibles is placed in one of the through holes, and the turntable drives the crucible to rotate to move to or leave the bottom of the sample bucket; the weighing mechanism includes a first weighing part and a lifting drive part, the first weighing part is connected to the output end of the lifting drive part so that the first weighing part abuts against the crucible for weighing.

[0018] The utility model provides a cover-opening and sample-pouring mechanism, in which the second drive component can move downward to clamp the bottle cap of the sample bottle, and after clamping the bottle cap, drive it to rotate along the central axis of the sample bottle. The third drive component clamps the bottle body of the sample bottle and can be used to fix the sample bottle. At this time, the second drive component drives the bottle cap to rotate and open the bottle cap; after the bottle cap is opened, the third drive component clamps the bottle body to rotate, which can, on the one hand, shake the sample bottle to mix the sample in the sample bottle evenly and avoid stratification, and on the other hand, pour the sample in the sample bottle into the transfer unit to facilitate the transfer unit to transfer the sample. The above-mentioned cover-opening and sample-pouring mechanism can mix the sample in the sample bottle and then pour it into the transfer unit, avoiding the problem of low sample representativeness caused by a single sampling point when directly using the clamp or sampling spoon to take samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a structural diagram of the cover opening and pouring mechanism in an embodiment of the present utility model;

[0021] Figure 2 for Figure 1 a cross-sectional view of the fifth driving portion;

[0022] Figure 3 This is a schematic structural diagram of a sample transfer device in an embodiment of the present utility model;

[0023] Figure 4 This is a structural diagram of the sample blanking mechanism in the embodiment of the present utility model;

[0024] Figure 5 for Figure 4 Schematic diagram of the structure of the transfer unit;

[0025] Figure 6 for Figure 4 a cross-sectional view of the transfer unit;

[0026] Figure 7 It is a structural diagram of the cleaning mechanism in an embodiment of the present utility model.

[0027] Reference numerals:

[0028] 100. Sample blanking mechanism; 110. Support seat;

[0029] 120, transfer unit; 121, sample bucket; 122, drop hole; 123, baffle; 124, rotating shaft; 125, flange;

[0030] 131. First driving unit; 132. Second driving unit;

[0031] 141. Third driving unit; 142. Fixing slot;

[0032] 150, turntable; 160, weighing mechanism; 170, crucible;

[0033] 200. Opening and pouring mechanism;

[0034] 210, fourth driving unit;

[0035] 220, fifth driving unit; 221, motor; 222, rotating shaft; 223, bearing; 224, rotating sleeve; 225, elastic member; 226, sliding groove;

[0036] 230, first clamping jaw; 240, sixth driving unit; 250, second clamping jaw; 260, rotating plate; 270, second weighing unit; 280, code scanning mechanism;

[0037] 300, sample transfer mechanism; 400, cleaning mechanism;

[0038] 410. Cleaning tank; 420. Lifting assembly; 430. Fixing seat; 440. Purge nozzle. DETAILED DESCRIPTION

[0039] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0040] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0041] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0043] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0044] like Figure 1 As shown, in the first aspect of an embodiment of the present application, a cover opening and sample pouring mechanism is provided, including a second drive component and a third drive component. The second drive component clamps the bottle cap of the sample bottle containing the sample to drive the sample bottle to move up and down and drive the sample bottle to rotate along its central axis. The third drive component clamps the bottle body of the sample bottle to fix the bottle body or drive the bottle body to rotate and pour the sample to the transfer unit 120.

[0045] Reference Figure 1 In the embodiment of the present application, the second drive assembly can move downward to clamp the bottle cap of the sample bottle, and after clamping the bottle cap, it drives it to rotate along the central axis of the sample bottle. The third drive assembly clamps the bottle body of the sample bottle and can be used to fix the sample bottle. At this time, the second drive assembly drives the bottle cap to rotate and open the bottle cap. After the bottle cap is opened, the third drive assembly clamps the bottle body to rotate, which can, on the one hand, shake the sample bottle to evenly mix the sample in the sample bottle and avoid stratification, and on the other hand, pour the sample in the sample bottle into the transfer unit 120 to facilitate the transfer unit 120 to transfer the sample.

[0046] The lid opening and pouring mechanism 200 of the embodiment of the present application can mix the sample in the sample bottle and pour it into the transfer unit 120, avoiding the problem of low sample representativeness caused by a single sampling point when directly using a clamp or a sampling spoon to take samples.

[0047] In some embodiments, the lid opening and pouring mechanism 200 further includes a second weighing unit 270. The transfer unit 120 is placed on the second weighing unit 270, and the third drive assembly drives the bottle body to rotate so that the sample in the bottle body is transferred to the transfer unit 120. In the embodiment of the present application, the second weighing unit 270 is disposed below the transfer unit 120 to weigh the net weight of the transfer unit 120 when there is no sample in the transfer unit 120. After the sample in the bottle body is poured into the transfer unit 120, the sample weight can be preliminarily weighed to improve subsequent sampling efficiency and reduce sample waste.

[0048] In some embodiments, the second drive assembly includes a fourth drive unit 210, a fifth drive unit 220, and a first clamping jaw 230. The output end of the fourth drive unit 210 is connected to the fifth drive unit 220 to move the fifth drive unit 220 up and down. The output end of the fifth drive unit 220 is connected to the first clamping jaw 230 to drive the first clamping jaw 230 to move up and down and rotate. The first clamping jaw 230 clamps the bottle cap. The fifth drive unit 220 includes a motor 221, a rotating shaft 222, a bearing 223, a rotating sleeve 224, and an elastic member 225. Figure 2 The output end of the motor 221 is connected to the rotating shaft 222, the bearing 223 is sleeved on the rotating shaft 222, a sliding groove 226 is formed on the rotating shaft 222, the rotating sleeve 224 is arranged at the end of the rotating shaft 222 and moves along the sliding groove 226, the first clamping jaw 230 is connected to the rotating sleeve 224, and the elastic member 225 is clamped between the bearing 223 and the rotating sleeve 224 to buffer the movement of the first clamping jaw 230 when opening or closing the bottle cap.

[0049] In this embodiment of the present application, the fourth drive unit 210 can move the first clamping jaw 230 downward to the position where the bottle cap is located to clamp the bottle cap, and the fifth drive unit 220 can rotate the first clamping jaw 230. When the third drive assembly is not clamping the bottle body, the first clamping jaw 230 can rotate the bottle cap and the bottle body together; when the third drive assembly is clamping the bottle body, the first clamping jaw 230 can rotate the bottle cap to open the bottle cap.

[0050] Reference Figure 2 In this embodiment of the present application, the motor 221 of the fifth drive unit 220 drives the rotating shaft 222, the bearing 223 sleeved on the rotating shaft 222, and the rotating sleeve 224 to rotate. The rotating sleeve 224 then drives the first clamping jaw 230 connected thereto to rotate. When the first clamping jaw 230 rotates and opens the bottle cap, the bottle cap moves upward accordingly. At this time, the first clamping jaw 230 applies an upward force to the elastic member 225 via the rotating sleeve 224, causing the rotating sleeve 224 to move upward along the sliding groove 226, thereby cushioning the movement of the bottle cap. When the first clamping jaw 230 rotates and closes the bottle cap, the elastic member 225 applies a downward force to the first clamping jaw 230 via the rotating sleeve 224, causing the bottle cap to move downward accordingly. The rotating sleeve 224 moves downward along the sliding groove 226, thereby cushioning the movement of the bottle cap. Specifically, the elastic member 225 may be a compression spring or a tension spring.

[0051] In some embodiments, the third drive assembly includes a sixth drive unit 240, a clamping unit, and a rotating plate 260. The output end of the sixth drive unit 240 is connected to the rotating plate 260 to rotate the rotating plate 260. The clamping unit includes a fixed portion and a second clamping jaw 250. The fixed portion is fixedly mounted on the rotating plate 260. The sample bottle is placed on the fixed portion, and the second clamping jaw 250 clamps the bottle body. In this embodiment of the present application, the bottle body is placed on the fixed portion, and the second clamping jaw 250 clamps the bottle body. When the sixth drive unit 240 drives the rotating plate 260 to rotate, it also rotates the fixed portion and the bottle body, causing the bottle body to rotate and pour the sample inside into the sample hopper 121 of the transfer unit 120. The angle at which the sixth drive unit 240 drives the rotating plate 260 to rotate can be controlled by a control system.

[0052] In some embodiments, the cap opening and pouring mechanism 200 further includes a code scanning mechanism 280. The second drive assembly drives the sample bottle to rotate along its central axis so that the QR code on the sample bottle is aligned with the code scanning mechanism 280 to record the sample bottle information. When the QR code on the sample bottle needs to be scanned, the second clamping jaw 250 releases the bottle body, and the first clamping jaw 230 drives the bottle cap to rotate, causing the bottle body to rotate accordingly, so that the QR code is aligned with the scanning mechanism for scanning.

[0053] According to a second aspect of an embodiment of the present application, a sample transfer device is provided, comprising a sample blanking mechanism 100, a sample transfer mechanism 300, a cleaning mechanism 400 and the above-mentioned cover-opening and sample-inverting mechanism 200. The sample transfer mechanism 300 transfers the transfer unit 120 from the cover-opening and sample-inverting mechanism 200 to the sample blanking mechanism 100, and transfers the transfer unit 120 from the sample blanking mechanism 100 to the cleaning mechanism 400.

[0054] Reference Figure 3 In the sample transfer device of the embodiment of the present application, the uncapping and sample pouring mechanism 200 opens the lid of the sample bottle and transfers the sample in the sample bottle to the transfer unit 120. The sample transfer mechanism 300 then transfers the transfer unit 120 to the sample dropping mechanism 100, and then transfers the transfer unit 120 to the cleaning mechanism 400, thereby automating the process from uncapping the sample bottle, transferring the sample, to weighing the sample, and cleaning the transfer unit 120. The sample bottle can be moved from a conveyor belt or a sample bottle rack to the uncapping and sample pouring mechanism 200 using the same sample transfer mechanism 300, or it can be manually placed on the uncapping and sample pouring mechanism 200, with the former being preferred. The sample transfer mechanism 300 can be a robot or a manipulator.

[0055] In some embodiments, the cleaning mechanism 400 includes a cleaning tank 410, a lifting assembly 420, a fixing base 430, and a purge nozzle 440. The lifting assembly 420 is installed in the cleaning tank 410, the fixing base 430 is arranged on the lifting assembly 420 to move the fixing base 430, the transfer unit 120 is placed on the fixing base 430, and the purge nozzle 440 is arranged in the cleaning tank 410 to clean the transfer unit 120. Figure 7 In the embodiment of the present application, the sample transfer mechanism 300 places the transfer unit 120 on the fixing seat 430, and the lifting assembly 420 drives the transfer unit 120 on the fixing seat 430 to move downward into the cleaning tank 410. The purge nozzle 440 is opened to clean the transfer unit 120. Among them, the fixing seat 430 can be provided with a groove for placing the transfer unit 120, so as to better fix the transfer unit 120 so that it remains fixed during cleaning. The cleaning mechanism 400 can also be provided with a gate, and the purge nozzle 440 is installed on one end surface of the gate facing the cleaning tank 410, and a pipeline can be set on the gate for ventilation and water.

[0056] In some embodiments, the sample dropping mechanism 100 includes a support base 110, a stirring assembly and a first driving assembly, and the transfer unit 120 is placed on the support base 110; the stirring assembly includes a stirring part and a first driving part 131 and a second driving part 132, the stirring part is located above the transfer unit 120, the output end of the first driving part 131 is connected to the stirring part so that the stirring part moves up and down, and the output end of the second driving part 132 is connected to the stirring part so that the stirring part rotates; the transfer unit 120 includes a sample bucket 121, a baffle 123 and a rotating shaft 124, a dropping hole 122 is formed on the bottom end surface of the sample bucket 121, a flange 125 is formed on the sample bucket 121, the rotating shaft 124 passes through the flange 125 and the baffle 123 so that the baffle 123 rotates along the rotating shaft 124 to cover or open the dropping hole 122; the first driving assembly is connected to the end of the baffle 123 away from the dropping hole 122.

[0057] In the present application, refer to Figure 4 The first drive unit 131 of the stirring assembly drives the stirring unit up and down to move it closer to or further away from the transfer unit 120. When the sample in the sample hopper 121 needs to be stirred, the first drive unit 131 drives the stirring unit downward, allowing the stirring unit to extend into the sample hopper 121 of the transfer unit 120. The second drive unit 132 drives the stirring unit to rotate and stir the sample; the stirring unit and the sample hopper 121 can automatically separate. After the sample in the sample hopper 121 is stirred and mixed, it is discharged from the discharge hole 122. The use of stirring rather than vibration to discharge the sample ensures that the sample does not segregate and has a high representativeness.

[0058] like Figure 5 、 Figure 6 As shown, a flange 125 is formed on the sample bucket 121, and a rotating shaft 124 passes through the flange 125 and the baffle 123 to connect the two, and enables the baffle 123 to rotate around the rotating shaft 124. Preferably, the flange 125 extends along the circumference of the sample bucket 121. One end of the baffle 123 is located below the drop hole 122 on the sample bucket 121. During the rotation of the baffle 123, the drop hole 122 can be shielded to facilitate the stirring of the sample in the sample bucket 121, or the drop hole 122 can be opened to allow the sample to drop through the drop hole 122. A connecting portion is provided on the end of the baffle 123 away from the drop hole 122. The first drive assembly is connected to the above-mentioned connecting portion. The first drive assembly can drive the baffle 123 to rotate to control the opening or closing of the drop hole 122, thereby realizing automatic control of the drop.

[0059] In this embodiment of the present application, sample dropout is achieved through the dropout hole 122 of the sample hopper 121, and the rotation of the baffle 123 can adjust the size of the dropout hole 122 in real time, thereby controlling the sample dropout speed. When the sample volume is large, the baffle 123 is rotated to fully open the dropout hole 122, ensuring efficient and rapid sample dropout. When the sample volume is small, the baffle 123 is rotated to partially open the dropout hole 122, slowing the dropout speed. This ensures accurate sample dropout and avoids excessive dropout that requires resampling.

[0060] The sample dropping mechanism 100 provided in the embodiment of the present application is provided with a stirring component to stir and mix the sample in the transfer unit 120, thereby avoiding the problem of low sample representativeness caused by a single sampling point when directly using a clamp or a sampling spoon to take samples; in addition, the method of taking materials using the dropping hole 122 on the bottom surface of the sample bucket 121 is combined with the function of the stirring component to ensure that the sample is not stratified or segregated, thereby improving the representativeness of the sample.

[0061] In some embodiments, a notch is formed at the bottom of the sample bucket 121, and one end of the baffle 123 extends into the notch to block the blanking hole 122; the baffle 123 rotates to abut against the two end surfaces corresponding to the notch on the sample bucket 121. Figure 5 In the embodiment of the present application, a notch is formed on the sample bucket 121, and one end of the baffle 123 extends from the notch to the corresponding position below the blanking hole 122. The two end surfaces on the sample bucket 121 corresponding to the notch can block the baffle 123, so that the baffle 123 can rotate within the extension range of the notch, ensuring that the blanking speed of the blanking hole 122 is more effectively adjusted when the baffle 123 rotates.

[0062] In some embodiments, the first drive assembly includes a third drive unit 141, a sliding unit, and a slide rail. The output end of the third drive unit 141 is connected to the sliding unit, enabling the sliding unit to move on the slide rail. The end of the baffle 123, away from the blanking hole 122, is connected to the sliding unit. In the embodiment of the present application, the third drive unit 141 drives the sliding unit to move, thereby rotating the baffle 123 about the rotation axis 124. The rotation axis 124 converts the movement of the sliding unit into rotation of the baffle 123.

[0063] Specifically, the sliding portion includes a slider and a fixing groove 142. The output end of the third driving portion 141 is connected to the slider. The fixing groove 142 is installed on the slider. One end of the baffle 123 away from the blanking hole 122 is fixed in the fixing groove 142. Figure 4 The baffle 123 is provided with a connecting portion at one end away from the blanking hole 122. The connecting portion and the fixing groove 142 can be fixed in a variety of ways, such as screw connection, clamping connection, etc., so as to achieve a quick connection between the baffle 123 and the fixing groove 142. The third driving part 141 is connected to the control system to control its operation or shutdown.

[0064] In some embodiments, the sample dropping mechanism 100 also includes a turntable 150, a weighing mechanism 160 and a crucible 170. A plurality of through holes are formed on the turntable 150. Each crucible 170 is placed in a through hole. The turntable 150 drives the crucible 170 to rotate to move to or leave the bottom of the sample bucket 121. The weighing mechanism 160 includes a first weighing part and a lifting drive part. The first weighing part is connected to the output end of the lifting drive part so that the first weighing part abuts against the crucible 170 for weighing.

[0065] Reference Figure 4 In this embodiment of the present application, crucibles 170 are placed in the through-holes of the turntable 150. The turntable 150 drives the crucibles 170 to rotate, allowing each crucible 170 to be moved to the bottom of the sample hopper 121 to receive the sample. The sample delivery mechanism 100 may also be provided with a suction assembly. If the crucible 170 has a lid, the suction assembly removes the lid from the corresponding crucible 170 before receiving the sample.

[0066] In the embodiment of the present application, when a crucible 170 moves to below the sample hopper 121, the lifting drive unit of the weighing mechanism 160 drives the first weighing unit upward until it contacts the crucible 170 to measure the net weight of the crucible 170. At this point, the baffle 123 rotates to open the drop hole 122 to drop the sample. The weight of the sample to be weighed in the crucible 170 determines the rotation angle of the baffle 123, that is, the drop speed of the drop hole 122, which can be controlled by the third drive unit 141. The sample stirred and mixed in the sample hopper 121 falls into the crucible 170 through the drop hole 122. The first weighing unit weighs the weight of the sample in the crucible 170 in real time, thereby accurately weighing the required weight of the sample. In addition, the volume of the sample hopper 121 can be set to be larger than the volume of the crucible 170, so that the sample capacity of each sample hopper 121 is sufficient to drop the sample into multiple crucibles 170 respectively. That is to say, after adding the sample to the hopper once, multiple samples can be automatically and continuously weighed out, reducing the dropping process and improving the weighing efficiency.

[0067] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cover opening and pouring mechanism, characterized by: It includes a second drive component and a third drive component. The second drive component clamps the bottle cap of the sample bottle to drive the sample bottle to move up and down and drive the sample bottle to rotate along its central axis. The third drive component clamps the bottle body of the sample bottle to fix the bottle body or drive the bottle body to rotate and pour the sample to the transfer unit.

2. The cover opening and pouring mechanism according to claim 1, characterized in that: The second driving assembly includes a fourth driving part, a fifth driving part and a first clamping jaw, wherein the output end of the fourth driving part is connected to the fifth driving part to enable the fifth driving part to move up and down, and the output end of the fifth driving part is connected to the first clamping jaw to drive the first clamping jaw to move up and down and rotate, and the first clamping jaw clamps the bottle cap; The fifth driving part includes a motor, a rotating shaft, a bearing, a rotating sleeve and an elastic member. The output end of the motor is connected to the rotating shaft. The bearing sleeve is arranged on the rotating shaft. A sliding groove is formed on the rotating shaft. The rotating sleeve is arranged at the end of the rotating shaft and moves along the sliding groove. The first clamping jaw is connected to the rotating sleeve. The elastic member is clamped between the bearing and the rotating sleeve to buffer the movement of the first clamping jaw when opening or closing the bottle cap.

3. The cover opening and pouring mechanism according to claim 1, characterized in that: The third driving assembly includes a sixth driving part, a clamping part and a rotating plate. The output end of the sixth driving part is connected to the rotating plate to rotate the rotating plate. The clamping part includes a fixing part and a second clamping claw. The fixing part is fixedly arranged on the rotating plate. The sample bottle is placed on the fixing part and the second clamping claw clamps the bottle body of the sample bottle.

4. The cover opening and pouring mechanism according to any one of claims 1 to 3, characterized in that: The cover opening and sample pouring mechanism further includes a second weighing part, the transfer unit is placed on the second weighing part, and the third driving component drives the bottle body to rotate so that the sample in the bottle body is transferred to the transfer unit.

5. The cover opening and pouring mechanism according to any one of claims 1 to 3, characterized in that: The cover opening and sample pouring mechanism also includes a code scanning mechanism, and the second driving component drives the sample bottle to rotate along its central axis so that the QR code on the sample bottle is aligned with the code scanning mechanism to record the sample bottle information.

6. A sample transfer device, characterized in that: It includes a sample blanking mechanism, a sample transfer mechanism, a cleaning mechanism and the cover opening and sample pouring mechanism according to any one of claims 1 to 5, wherein the sample transfer mechanism transfers the transfer unit from the cover opening and sample pouring mechanism to the sample blanking mechanism, and transfers the transfer unit from the sample blanking mechanism to the cleaning mechanism.

7. The sample transfer device according to claim 6, characterized in that: The cleaning mechanism includes a cleaning tank, a lifting assembly, a fixed seat and a purge nozzle. The lifting assembly is installed in the cleaning tank, the fixed seat is arranged on the lifting assembly to move the fixed seat, the transfer unit is placed on the fixed seat, and the purge nozzle is arranged in the cleaning tank to clean the transfer unit.

8. The sample transfer device according to claim 6, characterized in that: The sample dropping mechanism includes a support base, a stirring assembly and a first driving assembly, and the transfer unit is placed on the support base; the stirring assembly includes a stirring part, a first driving part, and a second driving part, and the stirring part is located above the transfer unit. The output end of the first driving part is connected to the stirring part to move the stirring part up and down, and the output end of the second driving part is connected to the stirring part to rotate the stirring part; The transfer unit includes a sample bucket, a baffle and a rotating shaft. A drop hole is formed on the bottom end surface of the sample bucket. A flange is formed on the sample bucket. The rotating shaft passes through the flange and the baffle so that the baffle rotates along the rotating shaft to cover or open the drop hole. The first driving assembly is connected to an end of the baffle away from the drop hole.

9. The sample transfer device according to claim 8, characterized in that: The flange extends along the circumference of the sample hopper.

10. The sample transfer device according to claim 8, characterized in that: A notch is formed at the bottom end of the sample bucket, and one end of the baffle extends into the notch to block the drop hole; the baffle rotates to abut against the two end surfaces corresponding to the notch on the sample bucket.

11. The sample transfer device according to claim 8, characterized in that: The first driving assembly includes a third driving part, a sliding part and a slide rail, the output end of the third driving part is connected to the sliding part so that the sliding part moves on the slide rail; the end of the baffle away from the blanking hole is connected to the sliding part.

12. The sample transfer device according to claim 11, wherein: The sliding portion includes a slider and a fixing groove. The output end of the third driving portion is connected to the slider. The fixing groove is installed on the slider. One end of the baffle away from the blanking hole is fixed in the fixing groove.

13. The sample transfer device according to any one of claims 8 to 12, characterized in that: The sample dropping mechanism also includes a turntable, a weighing mechanism and a crucible, wherein a plurality of through holes are formed on the turntable, and each crucible is placed in one of the through holes, and the turntable drives the crucible to rotate to move to or leave the bottom of the sample bucket; the weighing mechanism includes a first weighing part and a lifting drive part, and the first weighing part is connected to the output end of the lifting drive part so that the first weighing part abuts against the crucible for weighing.

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