A sample storage and retrieval device and method for a sample storage cabinet

Abstract

This invention discloses a sample storage and retrieval device and method for a sample storage cabinet. The sample storage and retrieval device includes an external support component and an internal storage mechanism. The external support component and the internal storage mechanism are respectively installed on the outside and inside of the sample storage cabinet and aligned with each other. The external support component includes a support base and a conveying mechanism. Two groove structures are arranged side by side on the support base. Each groove structure is equipped with a conveying mechanism. The conveying mechanism includes two belt conveyor components and a conveying drive component. This invention uses two belt conveyor components to support and convey the two support sides of the tray respectively. By leaving a conveying gap between the cover plate and the side of the groove structure, it is easy for the user to accurately place the two conveying sides of the tray onto the two belt conveyor components. At the same time, the conveying gap provides a limit to the tray during the conveying process, and combined with multiple sensors to detect the presence and position of the tray, it ensures that the tray can stably reach the designated position.

Description

Technical Field

[0001] This invention belongs to the technical field of food sample retention equipment, specifically relating to a sample retention cabinet sample box storage and retrieval device and method. Background Technology

[0002] In food safety supervision, sample retention is a crucial step in ensuring food quality and tracking food safety issues. This is especially true in the catering service sector, such as school canteens, group meal delivery units, and central kitchens. According to relevant operational procedures, samples of finished food products from each meal should be retained for unforeseen circumstances. However, existing sample retention cabinets and their sample box retrieval devices have some shortcomings:

[0003] To prevent tampering with food samples, personnel can only insert sample boxes but cannot remove them. Therefore, the sample storage cabinet cannot use a manual method of directly placing samples inside; a specialized sample box storage and retrieval device is needed to controllably connect the internal and external spaces of the cabinet. Existing device requires users to completely push the tray containing the sample boxes into the storage / retrieval opening, which is inconvenient. Furthermore, the storage / retrieval opening, designed to accommodate both pushing and retrieving the tray, occupies a significant amount of internal space, reducing the cabinet's storage capacity. Additionally, the existing device lacks the ability to weigh each sample box individually. Summary of the Invention

[0004] The purpose of this invention is to provide a sample storage and retrieval device for a sample retention cabinet.

[0005] In a first aspect, the present invention provides a sample storage and retrieval device for a sample retention cabinet, comprising an external support assembly and an internal storage and retrieval mechanism. The external support assembly and the internal storage and retrieval mechanism are respectively installed on the outside and inside of the sample retention cabinet and aligned with each other. The external support assembly includes a support base and a conveying mechanism. Two groove structures are arranged side by side on the support base. Each groove structure is equipped with a conveying mechanism. The two groove structures correspond to a storage conveying channel and a retrieval conveying channel, respectively.

[0006] The conveying mechanism includes two belt conveyor assemblies and a conveyor drive assembly. The two belt conveyor assemblies are respectively disposed on both sides within a corresponding groove structure. Each belt conveyor assembly includes pulleys and a conveyor belt. The two pulleys are rotatably connected to both ends of the groove structure and are driven by the conveyor belt. The conveyor belts of the two belt conveyor assemblies provide support and transport for the pallet.

[0007] The internal storage and retrieval mechanism includes two hook components; the first hook component is used to pull the tray on the storage and conveying channel completely into the sample retention cabinet using hooks; the second hook component is used to send the tray in the sample retention cabinet onto the retrieval and conveying channel using hooks.

[0008] Preferably, a cover plate is fixed to both groove structures. A conveying gap is left between the two side edges of the cover plate and the corresponding top side edges of the channel. The two conveying gaps are located directly above the two conveyor belts. The positions of the two conveying gaps match the two support edges at the bottom of the pallet.

[0009] Preferably, the external support assembly further includes a sample box weighing mechanism installed in the storage and conveying channel. The sample box weighing mechanism is located in the storage and conveying channel, between two belt conveyor assemblies. The sample box weighing mechanism includes a weighing bracket, a lifting frame, a pressure sensor, a lifting plate, and a lifting drive assembly. The weighing bracket is fixed to the support support. The lifting frame is slidably connected to the weighing bracket in the vertical direction and is driven to move up and down by the lifting drive assembly. The lifting plate is fixed to the top surface of the lifting frame by the pressure sensor. The cover plate of the storage and conveying channel has a clearance slot aligned with the lifting plate. Driven by the lifting drive assembly, the lifting plate can pass upward through the clearance slot.

[0010] Preferably, the lifting drive assembly includes a lifting drive electric cylinder, a sliding bracket, a sliding guide pin, and a lifting guide pin. The sliding bracket includes a connecting beam and two side plates. The opposite sides of the two spaced-apart side plates are fixed by the connecting beam. Lifting grooves are provided on both side plates of the sliding bracket. The lifting grooves include a lower horizontal section, an inclined section, and an upper horizontal section connected in sequence. The sliding bracket is slidably connected to the weighing bracket. The horizontally positioned lifting drive electric cylinder is fixed in the weighing bracket, and its piston rod is fixed to the sliding bracket by a connecting plate. The lifting frame is positioned between the two side plates of the sliding bracket. Lifting guide pins are fixed on both sides of the lifting frame. The lifting guide pins extend into the lifting grooves. The horizontal sliding of the sliding bracket drives the lifting frame to rise and fall via the lifting guide pins and the lifting grooves.

[0011] Preferably, the conveying drive assembly includes a drive shaft, a conveying drive motor, synchronous pulleys, and a synchronous belt. In the two belt conveyor assemblies, a pair of coaxial pulleys are fixed to both ends of the drive shaft. The two synchronous pulleys are fixed to the output shaft of the conveying drive motor and the drive shaft, respectively. The two synchronous pulleys are connected by a synchronous belt drive.

[0012] Preferably, the internal access mechanism further includes an access bracket, an access transmission assembly, and an access motor. The access transmission assembly includes a transmission belt and two drive pulleys. Both drive pulleys are rotatably connected to the access bracket and are connected by transmission belt. One of the drive pulleys is driven by the access motor. Two hook assemblies are respectively mounted on two straight segments of the transmission belt.

[0013] Preferably, the access motor is fixed on the access bracket, and the output shaft is fixed to one of the drive wheels.

[0014] Preferably, the hook assembly includes a guide rail, a slider, a claw, and a servo motor. The guide rail is fixed to the access bracket. The slider is slidably connected to the guide rail; the slider is fixed to the drive belt. The servo motor is fixed to the slider. The output shaft of the servo motor is vertically arranged. The inner end of the claw is fixed to the output shaft of the servo motor. The outer end of the claw is provided with a hook portion. Grooves matching the claw are formed on both sides of the tray.

[0015] Preferably, grooves are provided at both ends of both sides of the tray; the grooves at opposite ends of the two sides of the tray are symmetrical about the center point of the tray.

[0016] Secondly, the present invention provides a method for storing and retrieving sample boxes in a sample storage cabinet, which uses the aforementioned sample box storage and retrieval device; the sample box storage and retrieval method includes a sample storage method and a sample retrieval method.

[0017] The sample storage method includes the following steps:

[0018] Step 1: Place the sample box on the tray. Position the two support edges of the tray onto the two conveyor gaps of the storage conveyor channel. The conveyor mechanism corresponding to the storage conveyor channel moves the tray into the sample cabinet to the target position that matches the internal storage and retrieval mechanism. Whenever a sample box reaches directly above the sample box weighing mechanism, the conveyor mechanism pauses, and the sample box weighing mechanism uses a lifting plate to support the sample box and complete the weighing.

[0019] Step 2: The internal storage mechanism uses hooks to completely move the tray that has reached the target location into the sample retention cabinet.

[0020] The sampling method includes the following steps:

[0021] Step 1: The internal storage and retrieval mechanism moves the pallet to be retrieved outwards using hooks, so that the two supporting edges of the pallet are partially or completely moved onto the two conveying gaps of the retrieval conveying channel.

[0022] Step 2: The conveyor mechanism in the extraction conveyor channel drives the pallet to continue moving until the pallet is completely detached from the sample retention cabinet.

[0023] The beneficial effects of this invention are:

[0024] 1. The present invention uses two belt conveyor components to support and transport the two support sides of the pallet respectively, and by leaving a conveyor gap between the cover plate and the side of the groove structure, it is easy for the user to accurately place the two conveyor sides of the pallet onto the two belt conveyor components; at the same time, the conveyor gap provides a limit to the pallet during the transport process, ensuring that the pallet can stably reach the designated position.

[0025] 2. This invention utilizes a lifting plate capable of detecting pressure to raise the sample boxes one by one, thereby achieving fully automatic weighing of all sample boxes.

[0026] 3. The internal storage mechanism of the present invention achieves engagement and separation between the hook and the groove on the material transport tray by flipping the hook, thereby driving the material transport tray to fully enter the sample retention cabinet or partially detach from the sample retention cabinet, realizing the docking of the external support component with the internal structure of the sample retention cabinet, so that the external support component does not need to go deep into the sample retention cabinet, so that the external support component outside the sample retention cabinet can be designed as a folding structure. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a three-dimensional schematic diagram of the external support component in this invention;

[0029] Figure 3 This is a top view of the external support component in this invention;

[0030] Figure 4 This is a three-dimensional schematic diagram of the sample box weighing mechanism in this invention;

[0031] Figure 5 This is a cross-sectional schematic diagram of the sample box weighing mechanism in this invention;

[0032] Figure 6 This is a top view of the internal access mechanism in this invention.

[0033] Figure 7 This is a side view of the internal access mechanism in this invention.

[0034] Figure 8 This is a schematic diagram of the tray structure in this invention.

[0035] Figure label:

[0036] 1. External load-bearing components; 1-1. Load-bearing support; 1-2. Conveying mechanism; 1-2-1. Belt conveyor assembly; 1-2-2. Drive shaft; 1-2-3. Conveyor drive motor; 1-2-4. Synchronous pulley; 1-2-5. Synchronous belt; 1-3. Sample box weighing mechanism; 1-3-1. Weighing bracket; 1-3-2. Lifting frame; 1-3-3. Pressure sensor; 1-3-4. Lifting plate; 1-3-5. Lifting drive cylinder; 1-3-6. Sliding bracket; 1-3-7. Sliding guide pin; 1-3-8. 1. Lifting guide pin; 1-3-9. Horizontal chute; 1-3-10. Lifting chute; 1-4. Cover plate; 1-5. Conveying gap; 2. Internal storage and retrieval mechanism; 2-1. Storage and retrieval bracket; 2-2. In-and-out transmission assembly; 2-2-1. Transmission belt; 2-2-2. Transmission wheel; 2-3. Storage and retrieval motor; 2-4. Hook assembly; 2-4-1. Slider; 2-4-2. Hook; 2-4-3. Servo motor; 3. Pallet; 3-1. Groove; 4. Storage and conveying channel; 5. Retrieval and conveying channel; 6. Storage area; 7. Retrieval area. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings.

[0038] like Figure 1 As shown, a sample storage and retrieval device for a sample retention cabinet includes an external support component 1 and an internal storage and retrieval mechanism 2. The external support component 1 is installed outside the storage and retrieval port of the sample retention cabinet; the internal storage and retrieval mechanism 2 is installed inside the sample retention cabinet and aligned with the external support component 1. The external support component 1 is used to support and transport the tray 3 that needs to be stored in or output from the sample retention cabinet;

[0039] The internal storage and retrieval mechanism 2 is used to move the tray 3 of the external carrying component 1 into the sample retention cabinet to the storage area 6 inside the sample retention cabinet, and to move the tray 3 of the retrieval area 7 in the sample retention cabinet to the external carrying component 1. The sample retention cabinet has multiple storage positions; the tray 3 transfer structure inside the sample retention cabinet can transfer the tray 3 of the storage area 6 to any one of the storage positions, and transfer the tray 3 of any one of the storage positions to the retrieval area 7.

[0040] like Figure 2 and 3 As shown, the external support assembly 1 includes a support base 1-1, a conveying mechanism 1-2, and a sample box weighing mechanism 1-3. The support base 1-1 is formed by bending sheet metal. Two groove structures are arranged side-by-side on the top surface of the support base 1-1. Two conveying mechanisms 1-2 are respectively installed in the two groove structures. Both conveying mechanisms 1-2 can convey trays 3, corresponding to the two conveying channels of the external support assembly 1. The two conveying channels serve as a storage conveying channel 4 and a retrieval conveying channel 5, respectively. The storage conveying channel 4 and the retrieval conveying channel 5 are aligned with the storage area 6 and the retrieval area 7 inside the sample box, respectively.

[0041] The conveying mechanisms 1-2 corresponding to the storage conveying channel 4 and the extraction conveying channel 5 are used to input the tray 3 inward and output the tray 3 outward, respectively. The sample box weighing mechanism 1-3 is installed in the groove structure of the bearing support 1-1 corresponding to the storage conveying channel 4, and is used to cooperate with the conveying mechanism 1-2 corresponding to the storage conveying channel 4 to weigh each sample box carried on the tray 3 sent into the sample retention cabinet one by one.

[0042] The conveying mechanism 1-2 includes two belt conveyor assemblies 1-2-1 and a conveying drive assembly. The two belt conveyor assemblies 1-2-1 are respectively disposed on both sides within the corresponding groove structure. Each belt conveyor assembly 1-2-1 includes a support frame, pulleys, and a conveyor belt. The two support frames are respectively fixed to the inner and outer ends of the corresponding groove structure. The two pulleys are rotatably connected to the two support frames and are driven by the conveyor belt, and their tension can be adjusted.

[0043] The conveyor drive assembly includes a drive shaft 1-2-2, a conveyor drive motor 1-2-3, synchronous pulleys 1-2-4, and a synchronous belt 1-2-5. A pair of coaxial pulleys in the two belt conveyor assemblies 1-2-1 are fixed to both ends of the drive shaft 1-2-2. The two synchronous pulleys 1-2-4 and the output shaft of the conveyor drive motor 1-2-3 are fixed to the drive shaft 1-2-2. The two synchronous pulleys 1-2-4 are connected by the synchronous belt 1-2-5.

[0044] Cover plates 1-4 are fixed to both groove structures. Gaps are left between the two side edges of cover plates 1-4 and the corresponding top side edges of the channels, serving as conveyor gaps 1-5. The two conveyor gaps 1-5 are located directly above the two conveyor belts. The bottom of the tray 3 has two support edges that match the two conveyor gaps 1-5. By inserting the two support edges into the two conveyor gaps 1-5, the tray 3 can be supported on the two conveyor belts, facilitating the entry and exit of the tray 3 from the sample storage cabinet. The corresponding conveyor mechanisms 1-2 and cover plates 1-4 form a conveying channel. Cover plates 1-4 serve two purposes: firstly, to enhance the aesthetics of the external support component 1; and secondly, by forming the two conveyor gaps 1-5, to laterally limit the movement of the tray 3, improving the stability of the tray 3 during transport.

[0045] like Figure 4 and Figure 5As shown, the sample box weighing mechanism 1-3 is located in the groove structure corresponding to the storage and conveying channel 4, and is situated between the two belt conveyor assemblies 1-2-1. The sample box weighing mechanism 1-3 includes a weighing bracket 1-3-1, a lifting frame 1-3-2, a pressure sensor 1-3-3, a lifting plate 1-3-4, and a lifting drive assembly. The weighing bracket 1-3-1 is fixed to the bearing support 1-1. The lifting frame 1-3-2 is slidably connected to the weighing bracket 1-3-1 in the vertical direction via guide posts and is driven to move up and down by the lifting drive assembly. The lifting plate 1-3-4 is fixed to the top surface of the lifting frame 1-3-2 via the pressure sensor 1-3-3.

[0046] The lifting drive assembly includes a lifting drive electric cylinder 1-3-5, a sliding bracket 1-3-6, a sliding guide pin 1-3-7, and a lifting guide pin 1-3-8. The sliding bracket 1-3-6 includes a connecting beam and two side plates. The opposite sides of the two spaced-apart side plates are fixed by the connecting beam. Each of the two side plates of the sliding bracket 1-3-6 has a horizontal sliding groove 1-3-9 and a lifting sliding groove 1-3-10. The horizontal sliding groove 1-3-9 is horizontally oriented along its length. The lifting sliding groove 1-3-10 includes a lower horizontal section, an inclined section, and an upper horizontal section connected in sequence.

[0047] Two sliding guide pins 1-3-7 are fixed to the weighing bracket 1-3-1 and extend into the horizontal sliding grooves 1-3-9 on the two side plates of the sliding bracket 1-3-6, so that the sliding bracket 1-3-6 and the weighing bracket 1-3-1 form a sliding pair that slides horizontally. Rollers are installed at the positions where the sliding guide pins 1-3-7 connect to the horizontal sliding grooves 1-3-9 to reduce friction. A horizontally positioned lifting drive electric cylinder 1-3-5 is fixed in the weighing bracket 1-3-1, and the piston rod is fixed to the sliding bracket 1-3-6 by a connecting plate.

[0048] The lifting frame 1-3-2 is positioned between the two side plates of the sliding bracket 1-3-6. Lifting guide pins 1-3-8 are fixed to both sides of the lifting frame 1-3-2. The two lifting guide pins 1-3-8 extend into the two lifting grooves 1-3-10 respectively. The extension and retraction of the lifting drive cylinder 1-3-5 can adjust the horizontal sliding of the sliding bracket 1-3-6, thereby causing the lifting guide pins 1-3-8 to move between the lower and upper horizontal sections of the lifting grooves 1-3-10, thus raising and lowering the lifting frame 1-3-2.

[0049] The cover plate 1-4 of the storage and conveying channel 4 has a clearance slot aligned with the lifting plate 1-3-4. The lifting drive assembly has two working states: weighing state and standby state. In the weighing state, the lifting guide pin 1-3-8 is in the upper horizontal section of the lifting chute 1-3-10, the lifting frame 1-3-2 is in the upper limit position, and the lifting plate 1-3-4 pushes upward through the clearance slot, raising the sample box above, so that the sample box is supported on the lifting plate 1-3-4, realizing the weighing of a single sample box. In the standby state, the lifting guide pin 1-3-8 is in the lower horizontal section of the lifting chute 1-3-10, the lifting frame 1-3-2 is in the lower limit position, and the lifting plate 1-3-4 descends to a state below the top surface of the cover plate 1-4. At this time, the lifting drive assembly does not affect the conveying function of the conveying mechanism 1-2.

[0050] By moving the pallet 3 via the conveyor mechanism 1-2, the four sample boxes on the pallet 3 can be weighed one by one at the sample box weighing mechanism 1-3.

[0051] like Figure 6 and Figure 7 As shown, the internal storage and retrieval mechanism 2 is installed between the storage area 6 and the retrieval area 7 of the sample retention cabinet. The internal storage and retrieval mechanism 2 includes a storage and retrieval bracket 2-1, an infeed / outfeed transmission assembly 2-2, a storage and retrieval motor 2-3, and two hook assemblies 2-4. The infeed / outfeed transmission assembly 2-2 includes a transmission belt 2-2-1 and two transmission wheels 2-2-2. The two transmission wheels 2-2-2, with their axes vertically aligned, are rotatably connected to the storage and retrieval bracket 2-1; the two transmission wheels 2-2-2 are connected by the transmission belt 2-2-1. The arrangement direction of the two transmission wheels 2-2-2 is parallel to the tray sliding direction of the conveying mechanism 1-2. The storage and retrieval motor 2-3 is fixed to the storage and retrieval bracket 2-1, and its output shaft is fixed to one of the transmission wheels 2-2-2.

[0052] Both hook assemblies 2-4 are mounted on the drive belt 2-2-1, dividing the drive belt 2-2-1 into two equal-length segments. Each hook assembly 2-4 includes a guide rail, a slider 2-4-1, a claw 2-4-2, and a servo motor 2-4-3. The guide rail is fixed to the access bracket 2-1. The slider 2-4-1 is slidably connected to the guide rail; the slider 2-4-1 is fixed to the drive belt 2-2-1.

[0053] Servo motor 2-4-3 is fixed to slider 2-4-1. The output shaft of servo motor 2-4-3 is vertically oriented. The inner end of hook 2-4-2 is fixed to the output shaft of servo motor 2-4-3. Servo motor 2-4-3 can drive hook 2-4-2 to rotate outward or retract inward. The outer end of hook 2-4-2 is provided with a hook portion. The hook portions of hook 2-4-2 in the two hooking assemblies 2-4 face opposite directions. One hooking assembly 2-4 is used to send the tray 3, which has been transported to a designated position by storage conveying channel 4, into the storage area 6 of the sample retention cabinet; the other hooking assembly 2-4 is used to hook the tray 3 from the retrieval area 7 of the sample retention cabinet to a designated position on the retrieval conveying channel 5, so that the retrieval conveying channel 5 can continue to transport the tray 3 outward.

[0054] like Figure 8 As shown, grooves 3-1 are provided at both ends of both sides of the tray 3. When the tray 3 moves to the position aligned with the internal storage mechanism 2, the grooves 3-1 on the tray 3 are at the same height as the hooks 2-4-2 in the internal storage mechanism 2. The hooks 2-4-2 can flip outward to hook the grooves 3-1 on the tray 3, thereby driving the tray 3 to move in and out through the movement of the transmission belt 2-2-1. The four grooves 3-1 on the tray 3 are both axially symmetrical and centrally symmetrical, so that no matter which orientation the tray 3 is sent into the sample retention cabinet, there is always one groove 3-1 corresponding to the position of the hooks 2-4-2 in the internal storage mechanism 2.

[0055] In some embodiments, an infrared sensor is installed in the sample retention cabinet to detect whether the sample tray is transported by the external support component 1 to a designated position that matches the internal access mechanism 2.

[0056] The working method of the sample storage and retrieval device of the sample storage cabinet includes the sample storage method and the sample retrieval method.

[0057] The sample storage method includes the following steps:

[0058] Step 1: Place the sample box on tray 3. The sample box contains the food to be sampled. Place the two support edges of tray 3 onto the two conveying gaps 1-5 of the storage conveying channel 4. The conveying mechanism 1-2 corresponding to the storage conveying channel 4 moves tray 3 into the sample cabinet to the target position that matches the internal storage and retrieval mechanism 2. Whenever a sample box reaches directly above the sample box weighing mechanism 1-3, the conveying mechanism 1-2 pauses conveying, and the sample box weighing mechanism 1-3 uses the lifting plate 1-3-4 to support the sample box and complete the weighing.

[0059] Step 2: When the groove 3-1 at one end of the tray 3 enters the hooking range of the internal storage and retrieval mechanism 2, the conveying mechanism 1-2 corresponding to the storage and conveying channel 4 stops conveying, and the storage and retrieval motor 2-3 in the internal storage and retrieval mechanism 2 drives the hooking assembly 2-4 to move, so that the hook claw 2-4-2 on the hooking assembly 2-4 used to store the tray 3 is aligned with the groove 3-1 on the tray 3 in the storage and conveying channel 4.

[0060] Step 3: The hook 2-4-2 on the hook assembly 2-4 used for storing the tray 3 flips outward to hook onto the groove 3-1 on the tray 3; the storage and retrieval motor 2-3 in the internal storage and retrieval mechanism 2 drives the two hook assemblies 2-4 to move, pulling the tray 3 on the storage and conveying channel 4 into the storage area 6 of the sample retention cabinet. Then, the hook 2-4-2 on the hook assembly 2-4 used for storing the tray 3 flips inward to separate from the tray 3. Sample storage is complete.

[0061] The sampling method includes the following steps:

[0062] Step 1: The sample storage cabinet transfers the tray 3 that needs to be removed to the removal area 7; the storage motor 2-3 in the internal storage mechanism 2 drives the two hook components 2-4 to move in opposite directions, so that the hook claws 2-4-2 on the hook component 2-4 used to remove the tray 3 are aligned with the groove 3-1 on the tray 3 in the removal area 7 that is away from the external support component 1.

[0063] Step 2: The hook 2-4-2 on the hook assembly 2-4 used to remove tray 3 flips outward to hook onto the groove 3-1 on tray 3; the storage motor 2-3 in the internal storage mechanism 2 drives the two hook assemblies 2-4 to move, bringing the tray 3 portion of the tray 3 bracket into the extraction conveying channel 5. Afterward, the hook 2-4-2 on the hook assembly 2-4 used to remove tray 3 flips inward to separate from tray 3.

[0064] Step 3: The conveying mechanism 1-2 in the extraction conveying channel 5 drives the tray 3 to continue moving until the tray 3 is completely removed from the inside of the sample retention cabinet for staff to pick up, and the sampling is completed.

[0065] The above-mentioned sample storage and sampling methods can be executed simultaneously.

Claims

1. A sample storage and retrieval device for a sample retention cabinet, characterized in that: It includes an external support component (1) and an internal storage and retrieval mechanism (2); the external support component (1) and the internal storage and retrieval mechanism (2) are respectively installed on the outside and inside of the sample retention cabinet and are aligned with each other; the external support component (1) includes a support support (1-1) and a conveying mechanism (1-2); two groove structures are arranged side by side on the support support (1-1); each of the two groove structures is provided with a conveying mechanism (1-2); the two groove structures correspond to the storage conveying channel (4) and the retrieval conveying channel (5) respectively. The conveying mechanism (1-2) includes two belt conveyor assemblies (1-2-1) and a conveying drive assembly; the two belt conveyor assemblies (1-2-1) are respectively arranged on both sides of the corresponding groove structure; the belt conveyor assembly (1-2-1) includes pulleys and a conveyor belt; the two pulleys are respectively rotatably connected to both ends of the groove structure and are connected by transmission through the conveyor belt; the conveyor belts of the two belt conveyor assemblies (1-2-1) are used to provide support and conveying for the pallet (3); The internal storage and retrieval mechanism (2) includes two hook components (2-4); the first hook component (2-4) is used to pull the tray on the storage and conveying channel (4) completely into the sample retention cabinet by means of the hook (2-4-2); the second hook component (2-4) is used to send the tray in the sample retention cabinet onto the retrieval and conveying channel (5) by means of the hook (2-4-2). The external bearing component (1) further includes a sample box weighing mechanism (1-3) installed in the storage and conveying channel (4); the sample box weighing mechanism (1-3) includes a weighing bracket (1-3-1), a lifting frame (1-3-2), a pressure sensor (1-3-3), a lifting plate (1-3-4), and a lifting drive component; The lifting drive assembly includes a lifting drive electric cylinder (1-3-5), a sliding bracket (1-3-6), a sliding guide pin (1-3-7), and a lifting guide pin (1-3-8). The sliding bracket (1-3-6) includes a connecting beam and two side plates. The opposite sides of the two spaced-apart side plates are fixed by the connecting beam. Lifting grooves (1-3-10) are provided on both side plates of the sliding bracket (1-3-6). The lifting grooves (1-3-10) include a lower horizontal section, an inclined section, and an upper horizontal section connected in sequence. The sliding bracket (1-3-6) is slidably connected to the weighing bracket (1-3-1). It is horizontally positioned. The lifting drive electric cylinder (1-3-5) is fixed in the weighing bracket (1-3-1), and the piston rod is fixed to the sliding bracket (1-3-6) by a connecting plate; the lifting frame (1-3-2) is set between the two side plates of the sliding bracket (1-3-6); lifting guide pins (1-3-8) are fixed on both sides of the lifting frame (1-3-2); the lifting guide pins (1-3-8) extend into the lifting slide groove (1-3-10); the sliding bracket (1-3-6) slides horizontally through the lifting guide pins (1-3-8) and the lifting slide groove (1-3-10) to drive the lifting frame (1-3-2) to rise and fall.

2. The sample storage and retrieval device for a sample cabinet according to claim 1, characterized in that: Cover plates (1-4) are fixed on both groove structures; conveying gaps (1-5) are left between the two sides of the cover plate (1-4) and the two sides of the top of the corresponding channel; the two conveying gaps (1-5) are located directly above the two conveyor belts; the positions of the two conveying gaps (1-5) match the two support edges at the bottom of the tray (3).

3. The sample storage and retrieval device for a sample cabinet according to claim 2, characterized in that: The sample box weighing mechanism (1-3) is set in the storage and conveying channel (4) and located between two belt conveying components (1-2-1); the weighing bracket (1-3-1) is fixed on the bearing support (1-1); the lifting frame (1-3-2) is slidably connected to the weighing bracket (1-3-1) in the vertical direction and is driven by the lifting drive component to perform lifting and lowering movements; the lifting plate (1-3-4) is fixed to the top surface of the lifting frame (1-3-2) through the pressure sensor (1-3-3); the cover plate (1-4) of the storage and conveying channel (4) has a clearance slot aligned with the lifting plate (1-3-4); under the drive of the lifting drive component, the lifting plate (1-3-4) can pass upward through the clearance slot.

4. The sample storage and retrieval device for a sample cabinet according to claim 1, characterized in that: The conveying drive assembly includes a drive shaft (1-2-2), a conveying drive motor (1-2-3), a synchronous pulley (1-2-4), and a synchronous belt (1-2-5); a pair of coaxial pulleys in the two belt conveying assemblies (1-2-1) are fixed to both ends of the drive shaft (1-2-2); the output shafts of the two synchronous pulleys (1-2-4) and the conveying drive motor (1-2-3) are fixed to the drive shaft (1-2-2); the two synchronous pulleys (1-2-4) are connected by a synchronous belt (1-2-5).

5. The sample storage and retrieval device for a sample retention cabinet according to claim 1, characterized in that: The internal access mechanism (2) further includes an access bracket (2-1), an access transmission assembly (2-2), and an access motor (2-3); the access transmission assembly (2-2) includes a transmission belt (2-2-1) and two transmission wheels (2-2-2); both transmission wheels (2-2-2) are rotatably connected to the access bracket (2-1) and are connected by transmission through the transmission belt (2-2-1); one of the transmission wheels (2-2-2) is driven by the access motor (2-3); two hook assemblies (2-4) are respectively installed on two straight segments of the transmission belt (2-2-1).

6. The sample storage and retrieval device for a sample cabinet according to claim 5, characterized in that: The access motor (2-3) is fixed on the access bracket (2-1), and the output shaft is fixed to one of the drive wheels (2-2-2).

7. The sample storage and retrieval device for a sample cabinet according to claim 5, characterized in that: The hook assembly (2-4) includes a guide rail, a slider (2-4-1), a claw (2-4-2), and a servo motor (2-4-3); the guide rail is fixed on the storage bracket (2-1); the slider (2-4-1) is slidably connected to the guide rail; the slider (2-4-1) is fixed to the transmission belt (2-2-1); the servo motor (2-4-3) is fixed on the slider (2-4-1); the output shaft of the servo motor (2-4-3) is vertically arranged; the inner end of the claw (2-4-2) is fixed on the output shaft of the servo motor (2-4-3); the outer end of the claw (2-4-2) is provided with a hook; the two sides of the tray (3) are provided with grooves (3-1) that match the claw (2-4-2).

8. The sample storage and retrieval device for a sample cabinet according to claim 7, characterized in that: The tray (3) has grooves (3-1) at both ends of both sides; the grooves (3-1) at opposite ends of the two sides of the tray (3) are symmetrical about the center point of the tray (3).

9. A method for storing and retrieving sample boxes in a sample retention cabinet, characterized in that: The sample box storage and retrieval device according to claim 2 is used; the sample box storage and retrieval method includes a sample storage method and a sample retrieval method; The sample storage method includes the following steps: Step 1: Place the sample box on the tray (3); place the two supporting sides of the tray (3) on the two conveying gaps (1-5) of the storage conveying channel (4); the conveying mechanism (1-2) corresponding to the storage conveying channel (4) drives the tray (3) to move into the sample cabinet to the target position that matches the internal storage and retrieval mechanism (2); whenever a sample box reaches directly above the sample box weighing mechanism (1-3), the conveying mechanism (1-2) stops conveying, and the sample box weighing mechanism (1-3) supports the sample box through the lifting plate (1-3-4) to complete the weighing of the sample box; Step 2: The internal storage and retrieval mechanism (2) moves the tray (3) that has reached the target position completely into the sample retention cabinet through the hook (2-4-2); The sampling method includes the following steps: Step 1: The internal storage and retrieval mechanism (2) moves the tray (3) to be retrieved outward by means of the hooks (2-4-2), so that the two supporting sides of the tray (3) are partially or completely moved to the two conveying gaps (1-5) of the retrieval and conveying channel (5); Step 2: Extract the conveying mechanism (1-2) in the conveying channel (5) to drive the tray (3) to continue moving until the tray (3) is completely removed from the sample retention cabinet.

Images