Double-pushing-handle switching device and sampling method

Abstract

The invention discloses a double-pushing-handle switching device and a double-pushing-handle switching type sampling method through the double-pushing-handle switching device. The double-pushing-handle switching type sampling method comprises the steps that (1) a first pushing handle and a second pushing handle are located at respective initial positions of a sampling area respectively, and a release state is kept; (3) transferring the first pushing handle to the tail part of the sample frame a, and pushing the sample frame a to move forwards until the sample frame a reaches a sampling position; (4) starting to work by a sampling needle, returning the first pushing handle to the initial position and waiting for the next round of pushing, and moving the second pushing handle to the tail part of the sample frame a, and (5) starting a sample conveying belt to convey the sample frame a, and meanwhile, returning the second pushing handle to the sampling starting position again to push the next sample frame to move forwards to complete the sampling work. According to the invention, the sampling efficiency is improved, and the normal work of the sample transmission system is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of sample transmission, and in particular to a double-push-hand switching device and a sampling method. Background Art

[0002] The sample transmission system integrates the pre-analysis sample management, sample transmission, analyzer system data and post-analysis data system into an automated system, thereby realizing sample classification, transmission, detection and test report generation. Normally, the samples are contained in test tubes, which are sequentially inserted into one or more single-row sample racks, and the sample racks are transported by conveyor belts. When the sample passes the sampling position, the sample rack needs to be paused and the sampling needle is used for sampling and analysis. Since multiple sample racks are involved, the next sample rack can only be blocked after the samples on the sample rack are sampled. The sample rack switching cycle is long and the efficiency is low, which cannot meet the sample supply needs of high-speed instruments. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a double-push hand switching device and a double-push hand switching sampling method, which can specifically adopt the following technical solutions: The double-push-hand switching device described in the present invention includes a frame, on which a sample supply conveyor belt located at the inlet end of the sampling area and a sample delivery conveyor belt located at the outlet end of the sampling area are arranged, and a guide member, a first synchronous belt mechanism and a second synchronous belt mechanism located in the sampling area are arranged on the side of the frame, and the guide member, the first synchronous belt mechanism and the second synchronous belt mechanism are parallel to each other, a first pusher connected to the guide member is arranged on the first synchronous belt mechanism, and a second pusher connected to the guide member is arranged on the second synchronous belt mechanism, the first pusher includes a first movable stop arm, a first sensor and a second sensor, and the first pusher moves between the sampling position and the sample supply conveyor belt, the second pusher includes a second movable stop arm and a third sensor, and the second pusher moves between the sampling position and the sample delivery conveyor belt; the signal output ends of the first sensor, the second sensor and the third sensor are electrically connected to the signal input end of the control unit, and the control output end of the control unit is electrically connected to the control input ends of the sample supply conveyor belt, the sample delivery conveyor belt, the sampling needle, the first synchronous belt mechanism, the second synchronous belt mechanism, the first movable stop arm and the second movable stop arm respectively.

[0004] The rack supporting surface of the sampling area is arranged at the same height as the conveying surfaces of the sample supply conveyor belt and the sample delivery conveyor belt.

[0005] The sampling needle is located on the analyzer, the rotation track of the sampling needle passes through the sampling area, and a unique sampling position is set in the sampling area.

[0006] The first movable blocking arm and the second movable blocking arm both swing in a plane perpendicular to the transmission direction of the sample rack.

[0007] The first sensor and the second sensor are disposed on both sides of the first movable blocking arm, and the first sensor is close to one side of the sample supply conveyor belt, and the second sensor is close to one side of the sample delivery conveyor belt.

[0008] The third sensor is arranged on a side of the second movable blocking arm close to the sample conveying belt.

[0009] The double-push hand switching sampling method of the present invention is implemented by the double-push hand switching device, and comprises the following steps: S1, the first pusher and the second pusher are in the sampling area and are respectively in their respective initial positions, and the first movable blocking arm and the second movable blocking arm are both in a release state; S2, start the sample supply conveyor belt, so that the sample rack a moves with it to the sampling area, and at the same time, the first pusher moves to the designated position of the sampling area, and the first movable blocking arm changes from the release state to the blocking state, and the sample rack a stops moving when it moves to the position of the movable blocking arm. At this time, the first sensor detects the sample rack a, and the sample supply conveyor belt stops running; S3, the first movable blocking arm is turned into a releasing state, and the first pusher is driven by the first synchronous belt mechanism to move toward the tail of the sample rack a. When it reaches the predetermined position, the second sensor sends a signal to the control unit, and the first movable blocking arm is turned into a blocking state, pushing the sample rack a forward until the first sample tube at the front end of the sample rack a reaches the sampling position. At this time, the position of the first pusher is the sampling starting position; S4, when the sampling needle starts working, the first pusher and the second pusher also start to move, wherein the first pusher returns to its initial position, waits for the arrival of the sample rack b, and performs the next round of pushing; the second pusher, driven by the second synchronous belt mechanism, moves to the tail of the sample rack a and reaches the sampling starting position. At this time, the third sensor sends a signal to the control unit to turn the second movable blocking arm into a blocking state, and intermittently pushes the sample rack a forward according to the working rhythm of the sample needle, and starts the sample supply conveyor belt at the same time, so that the sample rack b is transported to the position of the first movable blocking arm and stops moving forward. When the first sensor detects the sample rack b, the first movable blocking arm is turned from the blocking state. The blocking state is changed to the releasing state, and the sample supply conveyor belt continues to run for a period of time until the sample rack b is transported to the position of the second movable blocking arm, and the sample supply conveyor belt stops running, and at the same time, the first pusher moves to the tail of the sample rack b. When the first sensor detects the sample rack b, the first movable blocking arm is changed to the blocking state, and the first pusher and the second pusher synchronously and intermittently push the sample rack a and the sample rack b forward according to the working rhythm of the sample needle. After completing the sampling of each sample on the sample rack a one by one, the second pusher pushes the sample rack a onto the sample supply conveyor belt, and at the same time, the first pusher pushes the sample rack b to the sampling position. At this time, the sample rack a is on the sample supply conveyor belt, and the sample rack b is at the sampling position; S5, sample rack b is at the sampling position. During the operation of the analyzer sampling needle, the sample conveyor belt discharges the sample rack a. At the same time, the second pusher returns to the sampling starting position again and pushes the sample rack b forward in the manner described in step 4 to complete the sampling work.

[0010] The advantages of the present invention are that the conveyor belt is arranged at both ends of the sampling area, and double pushers are arranged in the sampling area. Through the reception, pushing and pushing of the double pushers, each sample is sent to the sampling position one by one for sampling. During sampling, the sample rack is driven without power, so that the sample rack can be kept more stable, avoiding the sample rack jumping to produce the undesirable phenomenon of the needle and the like, and reducing the equipment failure rate; finally, the working mode of the double pushers cooperates with each other to ensure the rapid switching between adjacent sample racks, thereby avoiding the sampling waiting time, so that the sampling device can work continuously and meet the throughput requirements of high-speed instruments. The present invention improves the sampling efficiency and ensures the normal operation of the sample transmission system by adopting a double pusher switching device with ingenious structure, easy use, safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the double-push handle switching device of the present invention.

[0012] Figure 2 yes Figure 1 Bottom view of the central sampling area (without the sample rack and the push handle position does not correspond).

[0013] Figure 3 yes Figure 1 The structure of the first pusher Figure 1 .

[0014] Figure 4 yes Figure 1 The structure of the first pusher Figure 2 .

[0015] Figure 5 yes Figure 1 The structure of the second pusher Figure 1 .

[0016] Figure 6 yes Figure 1 The structure of the second pusher Figure 2 .

[0017] Figure 7 It is a schematic diagram of the workflow of the double-push-hand switching sampling method described in the present invention. DETAILED DESCRIPTION

[0018] The following is a detailed description of an embodiment of the present invention in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific working process are given, but the protection scope of the present invention is not limited to the following embodiment.

[0019] like Figure 1-7 As shown, the double pusher switching device of the present invention comprises a frame 1, on which a sample supply conveyor belt 2 located at the inlet end of the sampling area and a sample delivery conveyor belt 3 located at the outlet end of the sampling area are arranged. The supporting surface of the frame 1 in the sampling area is arranged at the same height as the conveying surfaces of the sample supply conveyor belt 2 and the sample delivery conveyor belt 3, so that the sample rack can always remain stable when being transported in different areas.

[0020] A sampling needle is arranged above the sampling area, and the sampling needle performs sampling analysis on the sample passing through the position and in a paused state. In this embodiment, a rocker arm analyzer is adopted, and the rotation track of the sampling needle of the analyzer has only one intersection with the sampling area, that is, the sampling area has only one sampling position.

[0021] The sampling area is also provided with a guide member 4 (mostly a linear guide rail), a first synchronous belt mechanism 5 and a second synchronous belt mechanism 6 located on the side of the frame 1. The guide member 4, the first synchronous belt mechanism 5 and the second synchronous belt mechanism 6 are parallel to each other. Among them, the first synchronous belt mechanism 5 is provided with a first pusher 7 connected to the guide member 4, and the second synchronous belt mechanism 6 is provided with a second pusher 8 connected to the guide member 4.

[0022] The first pusher 7 includes a bracket, a power source, a first movable arm 71, a first sensor 72 and a second sensor 73. The first pusher 7 moves between the sampling position and the sample supply conveyor belt 2. The second pusher 8 includes a bracket, a power source, a second movable arm 81 and a third sensor 82. The second pusher 8 moves between the sampling position and the sample supply conveyor belt 3. The power source (i.e., the rotary motor) is mounted on the bracket, and the first movable arm 71 and the second movable arm 81 are directly connected to the output shaft of the power source (see Figure 6 , 7 ) or connected to the power source through a connecting rod mechanism (see Figure 4 , 5 ), the first movable blocking arm 71 and the second movable blocking arm 81 swing in a plane perpendicular to the sample rack transmission direction, so that they have a vertical release state and a horizontal blocking state.

[0023] The signal output ends of the first sensor 72, the second sensor 73 and the third sensor 82 are electrically connected to the signal input end of the control unit, and the control output end of the control unit is electrically connected to the control input ends of the sample supply conveyor belt 2, the sample delivery conveyor belt 3, the sampling needle, the first movable arm 71 and the second movable arm 81. Specifically, the first sensor 72 and the second sensor 72 are disposed on both sides of the first movable arm 71, and the first sensor 72 is close to the sample supply conveyor belt 2, and the second sensor 73 is close to the sample delivery conveyor belt 3; the third sensor 82 is disposed on the side of the second movable arm 81 close to the sample delivery conveyor belt 3. The first sensor 72, the second sensor 73 and the third sensor 82 are all B5W-LB1112 sensors produced by Omron, which can accurately detect the position of the sample rack and provide a judgment signal for the pusher to execute.

[0024] The double-push hand switching sampling method of the present invention is implemented by the double-push hand switching device, and includes the following working steps: S1, at the beginning of the operation of the device, the first pusher 7 and the second pusher 8 are placed in the sampling area, and are respectively in their respective "initial positions", and the first movable blocking arm 71 and the second movable blocking arm 81 are both in the release state; S2, start the sample supply conveyor belt 2, so that the sample rack a moves with it to the sampling area, and at the same time, the first pusher 7 moves to the designated position of the sampling area, and the first movable blocking arm 71 changes from the release state to the blocking state, and the sample rack a stops moving when it moves to the position of the movable blocking arm 71. At this time, the first sensor 72 detects the sample rack a, and the sample supply conveyor belt 2 stops running; S3, the first movable blocking arm 71 is turned into a releasing state, and the first pusher 7 is driven by the first synchronous belt mechanism 5 to move toward the tail of the sample rack a. When it reaches the predetermined position, the second sensor 73 sends a signal to the control unit, and the first movable blocking arm 71 is turned into a blocking state, pushing the sample rack a forward until the first sample tube at the front end of the sample rack a reaches the sampling position. At this time, the position of the first pusher 7 is the "sampling starting position"; S4, when the sampling needle starts working, the first pusher 7 and the second pusher 8 also start to move, wherein the first pusher 7 returns to its initial position, waits for the arrival of the sample rack b, and performs the next round of pushing; the second pusher 8, driven by the second synchronous belt mechanism 6, moves to the tail of the sample rack a and reaches the sampling starting position. At this time, the third sensor 82 sends a signal to the control unit to turn the second movable blocking arm 81 into a blocking state, and intermittently pushes the sample rack a forward according to the working rhythm of the sample needle, and starts the sample supply conveyor belt 2 at the same time, so that the sample rack b is transported with it to the position of the first movable blocking arm 71 and stops moving forward. When the first sensor 72 detects the sample rack b, the first movable blocking arm 71 is The blocking state is changed to the releasing state, and the sample supply conveyor belt continues to run for a period of time until the sample rack b is transported to the position of the second movable blocking arm 81, and the sample supply conveyor belt 2 stops running. At the same time, the first pusher 7 moves to the tail of the sample rack b. When the first sensor 72 detects the sample rack b, the first movable blocking arm 71 is changed to the blocking state, and the first pusher 7 and the second pusher 8 synchronously and intermittently push the sample rack a and the sample rack b forward according to the working rhythm of the sample needle. After completing the sampling of each sample on the sample rack a, the second pusher 8 pushes the sample rack a onto the sample supply conveyor belt 3, and the first pusher 7 pushes the sample rack b to the sampling position. At this time, the sample rack a is on the sample supply conveyor belt 3, and the sample rack b is at the sampling position; S5, sample rack b is at the sampling position. During the operation of the analyzer sampling needle, the sample conveyor belt 3 discharges the sample rack a. At the same time, the second pusher 8 returns to the sampling starting position again and pushes the sample rack b forward in the manner described in the fourth step to complete the sampling work.

[0025] The above-mentioned method of switching between the first pusher 7 and the second pusher 8 to push the sample rack in relay greatly improves the pushing efficiency and sampling efficiency of the sample rack, and at the same time reduces the equipment failure rate and ensures that the equipment can operate stably for a long time.

[0026] It should be noted that, under the principle of ensuring the cooperation between the two pushers, the specific tasks of the first pusher 7 and the second pusher 8 can be flexibly allocated with reference to the above embodiment. In some cases, the first pusher 7 replaces the second pusher 8 to push the sample rack for sampling, so as to ensure that the sampling work is carried out continuously.

[0027] It should be noted that, in the description of the present invention, terms indicating orientation or positional relationships, such as "front", "rear", "left", "right", "vertical", "horizontal", "inside", "outside", etc., are based on the orientation or positional relationships shown in the drawings and are only for the convenience of describing the present invention 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 should not be understood as a limitation on the present invention.

Claims

1. A double push handle switching device, characterized in that: The invention comprises a frame, on which a sample supply conveyor belt located at the inlet end of the sampling area and a sample delivery conveyor belt located at the outlet end of the sampling area are arranged, and a guide member, a first synchronous belt mechanism and a second synchronous belt mechanism located in the sampling area are arranged on the side of the frame, and the guide member, the first synchronous belt mechanism and the second synchronous belt mechanism are parallel to each other, a first pusher connected to the guide member is arranged on the first synchronous belt mechanism, and a second pusher connected to the guide member is arranged on the second synchronous belt mechanism, the first pusher comprises a first movable stop arm, a first sensor and a second sensor, the first pusher moves between the sampling position and the sample supply conveyor belt, the second pusher comprises a second movable stop arm and a third sensor, and the second pusher moves between the sampling position and the sample delivery conveyor belt; the signal output ends of the first sensor, the second sensor and the third sensor are electrically connected to the signal input end of the control unit, and the control output end of the control unit is electrically connected to the control input ends of the sample supply conveyor belt, the sample delivery conveyor belt, the sampling needle, the first synchronous belt mechanism, the second synchronous belt mechanism, the first movable stop arm and the second movable stop arm respectively.

2. The double push handle switching device according to claim 1, characterized in that: The rack supporting surface of the sampling area is arranged at the same height as the conveying surfaces of the sample supply conveyor belt and the sample delivery conveyor belt.

3. The double push handle switching device according to claim 1, characterized in that: The sampling needle is located on the analyzer, the rotation track of the sampling needle passes through the sampling area, and a unique sampling position is set in the sampling area.

4. The double push handle switching device according to claim 1, characterized in that: The first movable blocking arm and the second movable blocking arm both swing in a plane perpendicular to the transmission direction of the sample rack.

5. The double push handle switching device according to claim 1, characterized in that: The first sensor and the second sensor are disposed on both sides of the first movable blocking arm, and the first sensor is close to one side of the sample supply conveyor belt, and the second sensor is close to one side of the sample delivery conveyor belt.

6. The double push handle switching device according to claim 1, characterized in that: The third sensor is arranged on a side of the second movable blocking arm close to the sample conveying belt.

7. A double pusher switching sampling method, characterized in that: The double pusher switching device is implemented by any one of claims 1 to 6, comprising the following steps: S1, the first pusher and the second pusher are in the sampling area and are respectively in their respective initial positions, and the first movable blocking arm and the second movable blocking arm are both in a release state; S2, start the sample supply conveyor belt, so that the sample rack a moves with it to the sampling area, and at the same time, the first pusher moves to the designated position of the sampling area, and the first movable blocking arm changes from the release state to the blocking state, and the sample rack a stops moving when it moves to the position of the movable blocking arm. At this time, the first sensor detects the sample rack a, and the sample supply conveyor belt stops running; S3, the first movable blocking arm is turned into a releasing state, and the first pusher is driven by the first synchronous belt mechanism to move toward the tail of the sample rack a. When it reaches the predetermined position, the second sensor sends a signal to the control unit, and the first movable blocking arm is turned into a blocking state, pushing the sample rack a forward until the first sample tube at the front end of the sample rack a reaches the sampling position. At this time, the position of the first pusher is the sampling starting position; S4, when the sampling needle starts working, the first pusher and the second pusher also start to move, wherein the first pusher returns to its initial position, waits for the arrival of the sample rack b, and performs the next round of pushing; the second pusher, driven by the second synchronous belt mechanism, moves to the tail of the sample rack a and reaches the sampling starting position. At this time, the third sensor sends a signal to the control unit to turn the second movable blocking arm into a blocking state, and intermittently pushes the sample rack a forward according to the working rhythm of the sample needle, and starts the sample supply conveyor belt at the same time, so that the sample rack b is transported to the position of the first movable blocking arm and stops moving forward. When the first sensor detects the sample rack b, the first movable blocking arm is turned from the blocking state. The blocking state is changed to the releasing state, and the sample supply conveyor belt continues to run for a period of time until the sample rack b is transported to the position of the second movable blocking arm, and the sample supply conveyor belt stops running, and at the same time, the first pusher moves to the tail of the sample rack b. When the first sensor detects the sample rack b, the first movable blocking arm is changed to the blocking state, and the first pusher and the second pusher synchronously and intermittently push the sample rack a and the sample rack b forward according to the working rhythm of the sample needle. After completing the sampling of each sample on the sample rack a one by one, the second pusher pushes the sample rack a onto the sample supply conveyor belt, and at the same time, the first pusher pushes the sample rack b to the sampling position. At this time, the sample rack a is on the sample supply conveyor belt 3, and the sample rack b is at the sampling position; S5, sample rack b is at the sampling position. During the operation of the analyzer sampling needle, the sample conveyor belt 3 discharges the sample rack a. At the same time, the second pusher returns to the sampling starting position again and pushes the sample rack b forward in the manner described in the fourth step to complete the sampling work.

Images