Double-drag-hook circulating frame conveying device and sample suction and inspection line

Abstract

The invention relates to the technical field of medical equipment, and discloses a double-drag-hook circulating frame conveying device and a sample suction and inspection line, and the double-drag-hook circulating frame conveying device comprises an inspection channel, a first sample conveying mechanism and a second sample conveying mechanism; the first sample feeding mechanism comprises a first shifting piece, a first linear driving mechanism and a first deflection driving mechanism, and the first deflection driving mechanism is used for driving the first shifting piece to swing and extend into the inspection channel from the side of the inspection channel or avoid the inspection channel; the second sample feeding mechanism comprises a second shifting piece and a second linear driving mechanism, when the second shifting piece is not subjected to material pressure or is subjected to material pressure in the first direction, the second shifting piece extends into the inspection channel, and when the second shifting piece is subjected to material pressure in a second direction opposite to the first direction, the second shifting piece avoids the inspection channel. The sample suction positioning accuracy and the sample transfer speed before and after sample suction can be improved.

Description

Technical Field

[0001] This invention relates to the field of medical equipment technology, and in particular to a double-hook circulating feeder device and a sample suction and delivery line. Background Technology

[0002] In the IVD (In Vitro Diagnostics) industry, automated sample delivery systems are widely used. The main sample transfer methods are single-tube transfer, whole-stand transfer, and swing-arm aspiration delivery. Among these, swing-arm aspiration delivery is the most widely used. However, this method places high demands on sample positioning and the speed of sample transfer before and after aspiration. Failure to effectively address these issues will severely impact the operation of the automated system and significantly reduce its efficiency.

[0003] Currently, most manufacturers' swing arm sampling and testing equipment uses a single hook or double belt test tube rack for delivery, which restricts the application of the swing arm sampling and testing method. As a result, production line manufacturers lack competitiveness in the market due to the absence of swing arm sampling and testing methods.

[0004] Therefore, in the IVD (In Vitro Diagnostics) industry, manufacturers of various production lines urgently need a swing-arm sampling and delivery device with double hooks that can accurately position samples and quickly transfer samples before and after sampling. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a double hook cyclic feeding device and a sample aspiration and testing line to improve the accuracy of sample positioning and the transfer speed of samples before and after aspiration.

[0006] To solve the above-mentioned technical problems, the present invention provides a double hook circulating feeder device, including a sample delivery channel, a first sample delivery mechanism, and a second sample delivery mechanism; The first sample delivery mechanism includes a first lever, a first linear drive mechanism, and a first sway drive mechanism. The first linear drive mechanism is used to drive the first lever to reciprocate along the extension direction of the sample delivery channel. The first sway drive mechanism is used to drive the first lever to sway so that the first lever extends into the sample delivery channel from the side of the sample delivery channel or avoids the sample delivery channel. The second sample feeding mechanism includes a second paddle and a second linear drive mechanism. The second paddle is located below the first paddle. When the second paddle is not subjected to material pressure, or when it is subjected to material pressure in a first direction, the second paddle extends into the sample feeding channel. When the second paddle is subjected to material pressure in a second direction opposite to the first direction, the second paddle avoids the sample feeding channel. The second linear drive mechanism is used to drive the second paddle to reciprocate along the extension direction of the sample feeding channel.

[0007] As an improvement to the above scheme, the sample delivery channel is arranged with an outlet and at least two inlets along its extension direction.

[0008] As an improvement to the above solution, the inspection channel is set on the operating platform. The operating platform is provided with a first infeed channel, a second infeed channel and an outfeed channel in sequence. The extension directions of the first infeed channel, the second infeed channel and the outfeed channel all intersect with the extension direction of the inspection channel. The first infeed channel and the second infeed channel are respectively opposite to different sample inlets, and the outfeed channel is opposite to the sample outlet.

[0009] As an improvement to the above solution, the first linear drive mechanism is provided with a first bracket, the first bracket is provided with a roller, the roller is provided with a groove, the bottom surface of the groove forms a concave wheel surface that rolls with the outer peripheral surface of the slide shaft, the slide shaft extends in the same direction as the inspection channel, and the first bracket is provided with a clamping structure for limiting the relative displacement between the first paddle and the first bracket in the axial direction of the slide shaft.

[0010] As an improvement to the above solution, the first paddle is provided with a collar surrounding the slide shaft. The collar is axially movable relative to the slide shaft, and the collar and the slide shaft are provided with a snap-fit ​​structure for limiting the relative displacement between the collar and the slide shaft in the circumferential direction. The first yaw drive mechanism is connected to the slide shaft to drive the slide shaft to rotate the first paddle.

[0011] As an improvement to the above solution, the first bracket is provided with a vertical plate, and the clamping structure includes a limiting hole provided in the vertical plate. The collar extends at least partially into the limiting hole, and the limiting hole is provided with a limiting surface parallel to the end faces of both ends of the collar. The first bracket is provided with a top plate, and the top plate is provided with an L-shaped limiting part. When the first lever is rotated to stand upright, the first lever abuts against the vertical surface inside the L-shaped limiting part.

[0012] As an improvement to the above solution, the second linear drive mechanism is provided with a second bracket, and the second paddle is hinged to the second bracket via a rotating shaft. The second paddle has a working position and a clearance position. When the second support moves along the first direction, under the action of gravity and / or the material thrust, the second paddle swings to the working position and stands upright to push the material forward; When the second bracket moves in a second direction opposite to the first direction, the second paddle is blocked by the material and flips around the pivot to face the clearance position so as to avoid the material.

[0013] As an improvement to the above solution, the second bracket is provided with a shaft hole adapted to the rotating shaft, and the second bracket is provided with a first limiting part above the shaft hole for limiting the second paddle to swing excessively toward the avoidance position, and a second limiting part below the shaft hole for limiting the second paddle to swing excessively toward the working position. And / or the end of the second lever away from the working position is provided with a plurality of counterweight mounting holes, and at least one of the counterweight mounting holes is provided with a limiting post, the limiting post being used to abut against the first limiting part.

[0014] In addition, the present invention also provides a sample aspiration and delivery line, which includes a sample aspiration device and the above-mentioned double hook circulating delivery device.

[0015] As an improvement to the above scheme, a pre-reading barcode scanner and a sampling barcode scanner are sequentially installed between the second inbound channel and the outbound channel. When the scanning results of the sample in the delivery channel are consistent after passing through the pre-reading barcode scanner and the sampling barcode scanner, the sampling device performs sampling inspection.

[0016] Implementing this invention has the following beneficial effects: This invention discloses a double-hook circulating sample delivery device. A first sample delivery mechanism drives a first lever to reciprocate along the extension direction of the delivery channel via a first linear drive mechanism. Simultaneously, the first lever is driven by a first sway mechanism to extend into or avoid the delivery channel from the side. A second sample delivery mechanism drives a second lever to reciprocate along the extension direction of the delivery channel via a second linear drive mechanism. The second lever is positioned below the first lever. When not subjected to material pressure, or when subjected to material pressure in a first direction, the second lever extends into the delivery channel; when subjected to material pressure in a second direction opposite to the first direction, it avoids the delivery channel. The first and second levers can move to any position within the delivery channel to deliver the material, i.e., the test tube rack. By alternately operating the first and second levers to deliver the test tube rack, compared to single-hook or belt delivery methods, this effectively improves the efficiency of test tube rack delivery and meets the need for automatic delivery of samples that have been interrupted in the delivery channel, thus meeting the timely testing requirements of emergency samples in practical applications. Furthermore, the present invention uses a first and a second lever to apply pressure to the material to achieve feeding. When the first and second levers push the test tube rack, they make hard contact, which is more accurate in positioning than the soft contact of the traditional belt. This results in a higher success rate and safety factor when scanning and positioning the sample during transportation and when the sampling needle enters the test tube for sampling. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an embodiment of the double hook circulating feeder device of the present invention; Figure 2 yes Figure 1 A structural diagram from another perspective; Figure 3 This is a schematic diagram of the structure of the first sample delivery mechanism; Figure 4 yes Figure 3 A magnified structural diagram of part A; Figure 5 This is a schematic diagram of the installation structure of the first lever; Figure 6 This is a schematic diagram of the second sample delivery mechanism when the second paddle is in the avoidance state; Figure 7 yes Figure 6 A schematic diagram of the enlarged structure of part B; Figure 8 This is a schematic diagram of the structure when the second lever is in working condition. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] like Figures 1 to 8 As shown, the present invention discloses a first embodiment of a double-hook circulating feeder device, including a feed channel 1, a first sample feeding mechanism 2, and a second sample feeding mechanism 3. The first sample feeding mechanism 2 includes a first lever 21, a first linear drive mechanism 22, and a first sway drive mechanism 23. The first linear drive mechanism 22 is used to drive the first lever 21 to reciprocate along the extension direction of the feed channel 1. The first sway drive mechanism is used to drive the first lever 21 to sway, so that the first lever 21 extends into the feed channel 1 from the side, or avoids the feed channel 1. The second sample delivery mechanism 3 includes a second paddle 31 and a second linear drive mechanism 32. The second paddle 31 is located below the first paddle 21. When the second paddle 31 is not subjected to material pressure, or is subjected to material pressure in a first direction, the second paddle 31 extends into the sample delivery channel 1. When the second paddle 31 is subjected to material pressure in a second direction opposite to the first direction, the second paddle 31 avoids the sample delivery channel 1. The second linear drive mechanism 32 is used to drive the second paddle 31 to reciprocate along the extension direction of the sample delivery channel 1.

[0020] It should be noted that the extension direction of the inspection channel 1 includes a first direction and a second direction, with the first direction being opposite to the second direction.

[0021] In this embodiment, the first sample feeding mechanism 2 drives the first paddle 21 to reciprocate along the extension direction of the inspection channel 1 via the first linear drive mechanism 22. The first paddle 21 is also driven by the first sway mechanism to extend into the inspection channel 1 from the side or avoid the inspection channel 1. The second sample feeding mechanism 3 drives the second paddle 31 to reciprocate along the extension direction of the inspection channel 1 via the second linear drive mechanism 32. The second paddle 31 is located below the first paddle 21. When not subjected to material pressure or subjected to material pressure in the first direction, the second paddle 31 extends into the inspection channel 1. When subjected to material pressure in the second direction opposite to the first direction, it avoids the inspection channel 1.

[0022] When the first pusher 21 swings and extends into the inspection channel 1 from the side, the first linear drive mechanism 22 drives the first pusher 21 to move, thereby enabling the first sample feeding mechanism 2 to push the material in the inspection channel 1; when the first pusher 21 swings and avoids the inspection channel 1, the first linear drive mechanism 22 drives the first pusher 21 to move, thereby enabling the first pusher 21 to be unloaded and adjusting the relative position of the first pusher 21 with the material in the inspection channel 1, in preparation for the next material push.

[0023] When the second pusher 31 is not under material pressure, or is under material pressure in the first direction, it extends into the inspection channel 1. When the second linear drive mechanism 32 drives the second pusher 31 to move, the second sample feeding mechanism 3 pushes the material in the inspection channel 1. When the second pusher 31 is under material pressure in the second direction opposite to the first direction, it avoids the inspection channel 1. The second linear drive mechanism 32 drives the second pusher 31 to move, so that the second pusher 31 moves across the material in the inspection channel 1, adjusting the relative position of the second pusher 31 and the material in the inspection channel 1, in preparation for the next material push.

[0024] In this embodiment, the first lever 21 and the second lever 31 can move to any position within the test tube rack in the test tube delivery channel 1 when there is a test tube rack present, and then deliver the material, i.e., the test tube rack, for testing. By alternately operating the test tube rack with the first lever 21 and the second lever 31, compared to single-hook or belt-based delivery methods, this effectively improves the efficiency of test tube rack delivery and meets the need for automatic delivery of samples that are interrupted within the test tube delivery channel 1, thus meeting the need for timely testing of emergency samples in practical applications. Furthermore, in this embodiment, the first lever 21 and the second lever 31 apply pressure to the material for delivery. The first lever 21 and the second lever 31 push the test tube rack in a hard contact manner, which, compared to the soft contact method of traditional belts, results in more accurate positioning. This leads to a higher success rate and safety factor when scanning and positioning the sample during delivery and when the sampling needle probes into the test tube for sampling. In other words, the double-hook circulating rack delivery device in this embodiment can improve the sample transfer speed and the accuracy of sample positioning.

[0025] Preferably, to meet the need for timely testing of emergency samples, this embodiment arranges an outlet 11 and at least two inlets 12 along the extension direction of the sample delivery channel 1. One inlet 12 is for emergency samples, and the other is for regular samples. The sample delivery channel 1 is equipped with a barcode scanning station and a sample suction station. To simplify the layout, the emergency sample inlet is preferably located between the regular sample inlet and the outlet 11, so that materials entering from both the emergency and regular sample inlets can pass through the same barcode scanning and suction stations and then be sent out from the outlet 11. Since the first lever 21 and the second lever 31 can move to any position within the sample delivery channel 1 when there is a test tube rack, even if there are many samples queuing for testing at the regular sample inlet, when an emergency sample appears at the emergency sample inlet, the first lever 21 or the second lever 31 can move to the position of the emergency sample inlet in time to send the emergency sample for testing first.

[0026] Specifically, in this embodiment, the sample delivery channel 1 is set on the operating platform of the rack. The operating platform is sequentially provided with a first infeed channel 4, a second infeed channel 5, and an outfeed channel 6. The extending directions of the first infeed channel 4, the second infeed channel 5, and the outfeed channel 6 all intersect the extending direction of the sample delivery channel 1. The first infeed channel 4 and the second infeed channel 5 are respectively opposite to different sample inlets, and the outfeed channel 6 is opposite to the sample outlet 11. Among them, the first infeed channel 4 is the conventional sample infeed channel, which is opposite to the conventional sample inlet; the second infeed channel 5 is the emergency sample infeed channel, which is opposite to the emergency sample inlet. The bottom of the test tube rack is provided with a slot. The first feed channel 4 and the second feed channel 5 are both provided with feeding guide rails that are adapted to the slots at the bottom of the test tube rack. The extension direction of the feeding guide rail is preferably perpendicular to the extension direction of the inspection channel 1, and the feeding guide rail does not extend into the inspection channel 1. A preset distance is preferably set between the feeding guide rail and the sample inlet. The test tube rack is pushed into the inspection channel 1 along the feeding guide rail by a driving mechanism such as a cylinder.

[0027] Combination Figure 3In this embodiment, the first linear drive mechanism 22 preferably consists of a pulley assembly, specifically including a first driving pulley, a first driven pulley, a first belt, and a first drive motor. The power output shaft of the first drive motor is connected to the first driving pulley, and the first belt is sleeved on the first driving pulley and the first driven pulley. The first linear drive mechanism 22 is provided with a first bracket 221 for mounting the first paddle 21. Specifically, the bottom of the first bracket 221 is fixedly connected to the first belt. A first slider a is provided in the middle part of the first bracket 221, a roller b is provided in the upper part of the first bracket 221, and a paddle mounting area for mounting the first paddle 21 is provided. A first translational slide rail j adapted to the first slider a is provided on the frame. The first translational slide rail j extends in the same direction as the inspection channel 1, improving the stability of the first bracket 221 during transmission on the belt conveyor mechanism. The roller b has a groove, the bottom surface of which forms a concave wheel surface that rolls with the outer circumferential surface of the sliding shaft c. The sliding shaft c extends in the same direction as the inspection channel 1. Roller b rolls below the slide shaft c when the first paddle 21 moves horizontally. Roller b cooperates with slide shaft c to prevent the first bracket 221 and the first paddle 21 from jumping, making the movement of the first paddle 21 along the inspection channel 1 smoother.

[0028] The frame has a first limiting baffle k at one end of the feeding guide rail. The test tube rack is conveyed along the first limiting baffle k in the inspection channel 1. The sliding shaft c is located on the side of the first limiting baffle k away from the feeding guide rail. The first translational sliding rail j is fixed on the first limiting baffle k. The extending direction of the first limiting baffle k is the extending direction of the inspection channel 1.

[0029] The axis of the sliding shaft c, i.e., the rotation center of the first lever 21, is located on the side of the inspection channel 1, so that the first lever 21 extends into the inspection channel 1 from the side of the inspection channel 1, or avoids the inspection channel 1. Combined with Figure 4 and Figure 5 The first paddle 21 has a collar d surrounding the sliding shaft c. The collar d is axially movable relative to the sliding shaft c. The collar d and the sliding shaft c have a locking structure for limiting the relative displacement between the collar d and the sliding shaft c in the circumferential direction. The first yaw drive mechanism 23 is connected to the sliding shaft c to drive the sliding shaft c to rotate the first paddle 21. The collar d and the sliding shaft c are coaxially arranged. The locking structure can be a protrusion or groove structure that extends axially along the sliding shaft c and engages with each other, so that the first paddle 21 can only move relative to the sliding shaft c and cannot rotate relative to the sliding shaft c.

[0030] The first bracket 221 has a clamping structure in its mounting area for limiting the relative displacement between the first lever 21 and the first bracket 221 along the axial direction of the slide shaft c. A positioning sensor is installed at the starting position of the first bracket on the frame. Specifically, the first bracket 221 has a vertical plate e, and the clamping structure includes a limiting hole e0 on the vertical plate e. The collar d extends at least partially into the limiting hole e0. The limiting hole e0 has limiting surfaces parallel to and corresponding to the end faces of both ends of the collar d. The limiting surfaces are in close contact with the ends of the collar d. When the first bracket 221 reciprocates along the axial direction of the slide shaft c driven by a belt, it can drive the sliding sleeve to move together. The first bracket 221 has a top plate f, and the top plate f has an L-shaped limiting part f0. The first swaying drive mechanism 23 drives the first lever 21 to oscillate in a plane intersecting the extension direction of the inspection channel 1. When the first lever 21 is rotated to the vertical position, the first lever 21 abuts against the vertical surface inside the L-shaped limiting part f0.

[0031] In this embodiment, the first yaw drive mechanism 23 preferably consists of a pulley assembly, specifically including a third driving pulley, a third driven pulley, a third belt, and a third drive motor. The power output shaft of the third drive motor is connected to the third driving pulley, and the third belt is sleeved on the third driving pulley and the third driven pulley. The axial directions of the third driving pulley and the third driven pulley intersect with the axial directions of the first driving pulley and the first driven pulley. The third driven pulley is connected to the sliding shaft c to drive the sliding shaft c to oscillate, and the first lever 21 on the sliding shaft c oscillates accordingly.

[0032] When retrieving the rack in the test delivery channel 1, the first yaw drive mechanism 23 first drives the sliding shaft c to rotate, causing the first lever 21 to be lowered, that is, the first lever 21 extends into the sample inlet of the test delivery channel 1. Then, the first linear drive mechanism 22 drives the first lever 21 to move the rack to the sample suction station for testing. After the testing is completed, the first yaw drive mechanism 23 drives the sliding shaft c to rotate again, causing the first lever 21 to stand up. Then, the first linear drive mechanism 22 drives the first lever 21 to move back to the sample inlet of the test delivery channel 1 to retrieve the test tube rack.

[0033] Combination Figure 6 In this embodiment, the second linear drive mechanism 32 preferably consists of a pulley assembly, specifically including a second driving pulley, a second driven pulley, a second belt, and a second drive motor. The power output shaft of the second drive motor is connected to the second driving pulley, and the second belt is sleeved on the second driving pulley and the second driven pulley. The axial directions of the second driving pulley and the second driven pulley are parallel to the axial directions of the first driving pulley and the first driven pulley. Figure 7 and Figure 8The second linear drive mechanism 32 is provided with a second bracket 321 for mounting the second paddle 31. The second paddle 31 is hinged to the second bracket 321 via a pivot 322, meaning the second paddle 31 can rotate relative to the second bracket 321. The second linear drive mechanism 32 also includes a second translation slide rail 323, and the second bracket 321 is provided with a second slider i adapted to the second translation slide rail 323. The pivot 322 of the second paddle 31 is located below the inspection channel 1, and the frame is provided with a material feeding groove 7 at the bottom of the inspection channel 1, extending in the same direction as the inspection channel 1. The second paddle 31 has a working position 311 and a clearance position 312. When the second support 321 moves along the first direction, under the action of gravity and / or the pushing force of the material, the second paddle 31 swings to the working position 311 and stands upright, extending into the inspection channel 1 through the material feeding groove 7 to push the material forward. When the second support 321 moves along the second direction opposite to the first direction, the second paddle 31 is blocked by the material and flips around the pivot 322 to the clearance position 312 facing upward. At this time, the top of the second paddle 31 is at a preset distance from the inspection channel 1, that is, the top of the second paddle 31 is located in the material feeding groove 7 or below the material feeding groove 7 to avoid the material.

[0034] Specifically, in this embodiment, the second lever 31 is rotatably mounted on the second bracket 321 with the rotating shaft 322 horizontally positioned. Furthermore, the center of gravity of the second lever 31 is offset from the rotating shaft 322 and is located below it, resulting in a naturally upright posture. This means the second lever 31 extends into the sample delivery channel 1 in its natural state. When the sample delivery rack returns to the sample inlet of the sample delivery channel 1 to remove another sample rack, the second lever 31 retracts from the sample delivery channel 1 under the pressure of the sample rack within the channel, passing beneath it. Preferably, the second lever 31 is designed with a thin and lightweight structure, and the rotating shaft 322 is positioned close to the side of the second lever 31 to reduce rotational inertia and maximize the distance between the center of gravity and the rotating shaft 322, thereby improving the response speed of the second lever 31's rotation, i.e., its deflection sensitivity. When the second support 321 moves forward, the second lever 31 can stand up by its own weight to push the material; when the second support 321 moves backward, the material blocks the material and causes the second lever 31 to flip and avoid it.

[0035] The second bracket 321 has a shaft hole adapted to the rotating shaft 322. Above the shaft hole, the second bracket 321 has a first limiting part g for limiting the excessive swing of the second paddle 31 towards the avoidance position 312. Below the shaft hole, the second bracket 321 has a second limiting part h for limiting the excessive swing of the second paddle 31 towards the working position 311. The end of the second paddle 31 away from the working position 311 has multiple counterweight mounting holes 313, and at least one of the counterweight mounting holes 313 has a limiting post 314, which at least abuts against the first limiting part g. The abutment between the end of the second paddle 31 away from the working position 311 and the second limiting part h, or the abutment between the limiting post 314 and the second limiting part h, effectively limits the excessive swing of the second paddle 31 towards the working position 311. The abutment between the limiting post 314 and the first limiting part g further limits the excessive swing of the second paddle 31 towards the avoidance position 312. By selecting and installing limit posts 314 of different sizes in the counterweight mounting holes 313 at different positions, both limiting and adjusting the gravity moment of the second lever 31 can be achieved, thereby adjusting the sensitivity of the deflection of the second lever 31 to adapt to test tube racks of different sizes.

[0036] This embodiment uses a reciprocating cycle of the first lever 21 and the second lever 31 to retrieve and deliver test tubes, which effectively improves the efficiency of test tube rack delivery compared to single hooks or belts. The first lever 21 and the second lever 31 make hard contact when pushing the test tube rack, which is more accurate in positioning than the soft contact of the traditional belt. This results in a higher success rate and safety factor when scanning and positioning samples and inserting the sampling needle into the test tube for sampling. It is equipped with two rack entry channels, one for routine and one for emergency, which effectively solves the problem of emergency samples having to queue for testing when there is only one rack entry channel. Furthermore, the routine rack entry channel, the emergency rack entry channel, and the rack exit channel 6 adopt a standard modular design, which makes the overall structure simple, low-cost, reliable, and easy to maintain.

[0037] In addition, the present invention also provides a sample aspiration and delivery line, which includes a sample aspiration device and the above-mentioned double hook circulating delivery device.

[0038] For the double-hook circulating rack feeding device of the sample aspiration and delivery line, a pre-reading barcode scanner 8 and a sampling barcode scanner 9 are sequentially installed between the second inlet channel 5 and the outlet channel 6. The pre-reading barcode scanner 8 and the sampling barcode scanner 9 are used to read the barcodes of the test tubes. When the scanning results of the sample in the delivery channel 1 by the pre-reading barcode scanner 8 and the sampling barcode scanner 9 are consistent, the aspiration device performs a sampling inspection to improve the success rate of sample information recognition. A protective cover is installed on the frame, and both the pre-reading barcode scanner 8 and the sampling barcode scanner 9 are located inside the protective cover. In this embodiment, the first lever 21 and the second lever 31 alternately send the test tube racks from the regular sample inlet and the emergency sample inlet to the sampling position for barcode scanning and inspection. By using a two-stage verification scanning method—pre-reading barcode scanning and sampling barcode scanning—to confirm sample information, the inaccurate information read by a single barcode scanner in traditional methods is effectively avoided, thus significantly improving the sample inspection rate.

[0039] The working process of the first lever 21 and the second lever 31 of the sample aspiration and delivery line in this embodiment is as follows: Initially, both the first paddle 21 and the second paddle 31 are in their original positions, with the first paddle 21 standing upright; When the rack is delivered from the racking channel to the inspection channel 1, the first lever 21 rotates and lowers, and the first lever 21 moves horizontally to push the test tube rack to the inspection position for scanning and sampling. When the rack is sent to the inspection channel 1 again through the racking channel, the second lever 31 moves and pushes the test tube rack to the inspection position to wait. After the first push plate 21 completes the inspection of the test tube rack, the test tube rack is sent to the exit channel 6. The first push plate 21 rotates and stands up and returns to its original position to take down the test tube rack and wait in front of the inspection position. At the same time, the second push plate 31 moves and pushes the test tube rack to the inspection position to scan the code and aspirate the sample. After the second pusher 31 completes the inspection of the test tube rack, the test tube rack is sent to the exit channel 6. The second pusher 31 passes under the test tube rack waiting for the first pusher 21, returns to its original position, and takes the next test tube rack for inspection.

[0040] In this embodiment, the sample aspiration and delivery line delivers test tube racks through the alternating operation of two-stage hooks (i.e., the first lever 21 and the second lever 31), and is equipped with a regular rack entry channel and an emergency rack entry channel. At the same time, it is equipped with pre-reading position barcode scanning and secondary verification barcode scanning at the aspiration position to achieve accurate aspiration positioning, high sample information recognition success rate, fast sample transfer speed before and after aspiration, and timely emergency sample testing.

[0041] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A double-hook circulating feeder device, characterized in that, This includes the sample delivery channel, the first sample delivery institution, and the second sample delivery institution; The first sample delivery mechanism includes a first lever, a first linear drive mechanism, and a first sway drive mechanism. The first linear drive mechanism is used to drive the first lever to reciprocate along the extension direction of the sample delivery channel. The first sway drive mechanism is used to drive the first lever to sway so that the first lever extends into the sample delivery channel from the side of the sample delivery channel or avoids the sample delivery channel. The second sample feeding mechanism includes a second paddle and a second linear drive mechanism. The second paddle is located below the first paddle. When the second paddle is not subjected to material pressure, or when it is subjected to material pressure in a first direction, the second paddle extends into the sample feeding channel. When the second paddle is subjected to material pressure in a second direction opposite to the first direction, the second paddle avoids the sample feeding channel. The second linear drive mechanism is used to drive the second paddle to reciprocate along the extension direction of the sample feeding channel.

2. The double-hook circulating feeder device as described in claim 1, characterized in that, The sample delivery channel is arranged with an outlet and at least two inlets along its extension direction.

3. The double hook circulating feeder device as described in claim 2, characterized in that, The inspection channel is set on the operating platform, which is provided with a first infeed channel, a second infeed channel and an outfeed channel in sequence. The extension directions of the first infeed channel, the second infeed channel and the outfeed channel all intersect the extension direction of the inspection channel. The first infeed channel and the second infeed channel are respectively opposite to different sample inlets, and the outfeed channel is opposite to the sample outlet.

4. The double-hook circulating feeder device as described in claim 1, characterized in that, The first linear drive mechanism is provided with a first bracket, and the first bracket is provided with a roller. The roller is provided with a groove, and the bottom surface of the groove forms a concave wheel surface that rolls with the outer peripheral surface of the slide shaft. The slide shaft extends in the same direction as the inspection channel. The first bracket is provided with a clamping structure for limiting the relative displacement between the first paddle and the first bracket in the axial direction of the slide shaft.

5. The double-hook circulating feeder device as described in claim 4, characterized in that, The first paddle is provided with a collar surrounding the slide shaft. The collar is axially movable relative to the slide shaft. The collar and the slide shaft are provided with a snap-fit ​​structure for limiting the relative displacement between the collar and the slide shaft in the circumferential direction. The first yaw drive mechanism is connected to the slide shaft to drive the slide shaft to rotate the first paddle.

6. The double-hook circulating feeder device as described in claim 5, characterized in that, The first bracket is provided with a vertical plate, and the clamping structure includes a limiting hole provided in the vertical plate. The collar extends at least partially into the limiting hole, and the limiting hole is provided with a limiting surface parallel to the end faces of both ends of the collar. The first bracket is provided with a top plate, and the top plate is provided with an L-shaped limiting part. When the first lever is rotated to stand upright, the first lever abuts against the vertical surface inside the L-shaped limiting part.

7. The double hook circulating feeder device as described in claim 1, characterized in that, The second linear drive mechanism is provided with a second bracket, and the second paddle is hinged to the second bracket via a rotating shaft. The second paddle has a working position and a clearance position. When the second support moves along the first direction, under the action of gravity and / or the material thrust, the second paddle swings to the working position and stands upright to push the material forward; When the second bracket moves in a second direction opposite to the first direction, the second paddle is blocked by the material and flips around the pivot to face the clearance position so as to avoid the material.

8. The double hook circulating feeder device as described in claim 7, characterized in that, The second bracket is provided with a shaft hole adapted to the rotating shaft. Above the shaft hole, the second bracket is provided with a first limiting part for limiting the second paddle to swing excessively toward the avoidance position. Below the shaft hole, the second limiting part is provided for limiting the second paddle to swing excessively toward the working position. And / or the end of the second lever away from the working position is provided with a plurality of counterweight mounting holes, and at least one of the counterweight mounting holes is provided with a limiting post, the limiting post being used to abut against the first limiting part.

9. A sample aspiration and delivery line, characterized in that, It includes a sampling device and a double-hook circulating feeder device as described in any one of claims 1 to 8.

10. The sample aspiration and delivery line as described in claim 9, characterized in that, A pre-reading barcode scanner and a sampling barcode scanner are sequentially installed between the second inbound channel and the outbound channel. When the scanning results of the sample in the delivery channel are consistent with those of the pre-reading barcode scanner and the sampling barcode scanner, the sampling device performs sampling inspection.

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