Laminated plate lifting device and laminated plate material subpackaging equipment and method

Abstract

The invention relates to the fields of biological laboratory instruments and equipment, microbiological detection and analysis instruments and the like, in particular to a stacked plate lifting device and stacked plate material split charging equipment and method. The stacked plate lifting device comprises a base plate, a lifting device and a lifting device, the bracket combination comprises M layers of plate brackets which are longitudinally stacked and are arranged on the base plate, and each plate bracket is of a disc-shaped structure as a whole and comprises a central part and a middle part arranged in the disc-shaped structure; the N lifting fork entries are distributed on the periphery of the disc-shaped structure, and every two adjacent lifting fork entries are separated from each other through a separation part; the S separating and positioning mechanisms can extend or retract in the direction parallel to the central axis of the disc-shaped structure; wherein the base plate is connected with the bottommost plate bracket in the bracket combination through a separating and positioning mechanism, and the two vertically adjacent plate brackets in the bracket combination are connected through a separating and positioning mechanism. According to the invention, the plates can be stored and treated as much as possible in unit area, and space resources are utilized as much as possible.

Description

Technical Field

[0001] The present invention relates to testing and analyzing microorganisms by measuring the physical properties of microbial colonies, and in particular to the fields of biological laboratory instruments and equipment, microbial detection and analysis instruments, etc. Specifically, it is a stacked petri dish lifting device, a device and method for material dispensing of stacked petri dishes. Background Art

[0002] Petri dishes (also known as "culture dishes", "plates") are commonly used utensils in microbiological experiments for culturing and observing microorganisms such as bacteria and mosses. A petri dish includes a bottom and a lid. Both the lid or the bottom are structures with a concave and hollow surface on one side. Packaged petri dishes, or petri dishes in use, have the bottom of the petri dish inserted into the lid to form a relatively enclosed space. To fill the enclosed space with materials, the lid and the bottom need to be separated, the materials are first filled into the bottom, and then the lid is closed.

[0003] However, in the process of implementing the present invention, existing petri dish equipment is all developed based on large-scale filling lines, which require a large production space and are not convenient for custom small-batch production. Specifically:

[0004] (1) The space utilization rate of the petri dish placement mechanism is low;

[0005] (2) Laboratory staff fill by manual pouring or peristaltic pump, which takes up the time of the staff and requires a large area for cooling and drying

[0006] (3) Using existing dispensing instruments on the market, but the internal humidity of the dispensed petri dishes is high, and there is a large amount of water mist on the lids, which affects subsequent work. If the lids are placed after the water mist has dispersed, it is a difficult problem how to place dozens or even hundreds of lids aseptically. Summary of the Invention

[0007] I. Technical Problems to be Solved

[0008] The present invention expects to solve at least one of the above technical problems.

[0009] II. Technical Solutions

[0010] The first aspect of the present invention provides a stacked petri dish lifting device. The stacked petri dish lifting device includes: a chassis; a bracket assembly, including: M layers of petri dish brackets stacked longitudinally, disposed above the chassis, M≥2, and the petri dish brackets as a whole are in a disc-like structure, including: a central part, disposed in the middle of the disc-like structure; N lifting fork openings, distributed on the periphery of the disc-like structure, and adjacent lifting fork openings are separated from each other by a partition part, N≥3, and the lifting fork openings are provided with guiding steps, and the guiding steps divide the lifting fork openings into two layers; the upper lifting part matches the shape of the petri dish lid; the lower fork inlet matches the shape of the petri dish bottom; S separation and positioning mechanisms, which can extend or retract along the direction parallel to the central axis of the disc-like structure, S≥1; wherein, between the chassis and the lowermost layer of petri dish bracket in the bracket assembly, and between the upper and lower adjacent two layers of petri dish brackets in the bracket assembly, they are connected by separation and positioning mechanisms; wherein, when each separation and positioning mechanism is in the retracted state, the M layers of petri dish brackets are retracted downward, and the stacked M-layer petri dishes can be inserted into a certain column of lifting fork openings of the bracket assembly; when each separation and positioning mechanism is in the extended state, the M layers of petri dish brackets are lifted upward, and the lifting part of the mth layer of petri dish bracket lifts the lid of the mth layer of petri dish and the bottom of the (m + 1)th layer of petri dish thereon, m = 1, 2, ……, M - 1.

[0011] In some embodiments of the present invention, the disc-like structure is: a disc-like structure or a regular U-sided structure, U≥3.

[0012] In some embodiments of the present invention, the S separation and positioning mechanisms are uniformly arranged at the positions of the partition parts outside the central axis of the disc-like structure, S≥3.

[0013] In some embodiments of the present invention, the separation and positioning mechanism is one of the following mechanisms: a hinge arm mechanism, a folding hinge mechanism, a pull rope mechanism, a chain mechanism, a longitudinal fixed-length bolt mechanism.

[0014] In some embodiments of the present invention, S accommodating grooves extending radially along the disc-like structure are uniformly arranged in the partition part outside the central part; a bracket hinge shaft is arranged in the accommodating groove on one side close to or away from the central axis of the disc-like structure, and the separation and positioning mechanism is a hinge arm mechanism; the hinge arm mechanism includes: a lower hinge arm, the upper end of which is hinged to the bracket hinge shaft; an upper hinge arm, the lower end of which is hinged to the bracket hinge shaft; the rotation ranges of the lower hinge arm and the upper hinge arm around the bracket hinge shaft are respectively located below and above the disc-like structure; wherein, the lower end of the lower hinge arm of the lowermost layer of petri dish bracket is hinged to the corresponding hinge shaft on the chassis; the lower end of the lower hinge arm of the mth layer of petri dish bracket is hinged to the upper end of the upper hinge arm of the (m - 1)th layer of petri dish bracket; the upper end of the upper hinge arm of the mth layer of petri dish bracket is hinged to the lower end of the lower hinge arm of the (m + 1)th layer of petri dish bracket, m = 1, 2, ……, M - 1.

[0015] The second aspect of the present invention provides a stacking and covering structure lifting device. The stacking petri dish material dispensing equipment includes: a frame; the stacking petri dish lifting device as described above, the chassis of which is fixed on the frame; a lifting mechanism for controlling the downward retraction or upward lifting of the M-layer petri dish brackets in the stacking petri dish lifting device; a rotating mechanism disposed inside or below the chassis, which drives the chassis to rotate and thereby drives the bracket assembly to rotate; a needle displacement mechanism for driving the tip of the dispensing needle to move between the petri dishes in the M-layer petri dish brackets in the extended state; a control mechanism, which is signal-connected to the lifting mechanism, the rotating mechanism, and the needle displacement mechanism.

[0016] In some embodiments of the present invention, the lifting mechanism adopts one of the following forms: a lifting form, a lead screw form, and a gear drive.

[0017] In some embodiments of the present invention, the needle displacement mechanism includes: a longitudinal displacement mechanism, which adopts one of the following forms: a slide rail form, a lead screw form, and a gear drive form; a lateral swing mechanism mounted on the longitudinal displacement mechanism; wherein, the dispensing needle is mounted on the lateral swing mechanism.

[0018] In some embodiments of the present invention, the lifting mechanism adopts a lifting form. The lifting mechanism includes: a reversing pulley installed on the frame above the stacking petri dish lifting device through a pulley fixing seat; a lifting motor installed at the top of the frame through a motor fixing seat, the torque output end of which is connected to a winding wheel; a lifting cable, the first end of which is fixed on the winding wheel, and the second end of which passes through the reversing pulley and is connected to the topmost petri dish bracket in the bracket assembly.

[0019] In some embodiments of the present invention, the second end of the lifting cable is connected to the topmost petri dish bracket through a universal rotating sling.

[0020] In some embodiments of the present invention, in the needle displacement mechanism, the lateral swing mechanism is a servo motor.

[0021] In some embodiments of the present invention, the longitudinal displacement mechanism adopts a slide rail form and includes: a guide rail disposed along the direction parallel to the central axis of the disc-shaped structure; an upper synchronous pulley and a lower synchronous pulley respectively disposed at the top and bottom of the guide rail; a needle lifting motor, the torque output shaft of which is connected to the driving side of the lower synchronous pulley through a coupling; a synchronous belt wound around the upper synchronous pulley and the lower synchronous pulley; a guide rail slider that can move up and down on the guide rail, is connected to the synchronous belt, and fixes the servo motor; wherein, the needle lifting motor outputs torque to drive the lower synchronous pulley to rotate, the lower synchronous pulley drives the synchronous belt to move, and the synchronous belt drives the guide rail slider to move up and down, thereby driving the dispensing needle to move up and down.

[0022] The third aspect of the present invention provides a method for dispensing materials into stacked petri dishes. This method for dispensing materials into stacked petri dishes is carried out by the above-mentioned equipment for dispensing materials into stacked petri dishes and is executed by a control mechanism. In the initial state, stacked petri dishes are inserted into the lifting forks of the stacked petri dish lifting device in the retracted state. The method for dispensing materials into stacked petri dishes includes: Step A, controlling the lifting mechanism to rise, driving each separation and positioning mechanism in the stacked petri dish lifting device into the extended state, and the lifting parts of each layer of petri dish brackets lift the lid of the current layer of petri dishes and the bottom of the upper layer of petri dishes together; Step B, controlling the needle displacement mechanism to drive the dispensing needle to move above the petri dish to be dispensed for material dispensing, and repeating the execution until the material dispensing of the petri dishes in the current column is completed; Step C, the rotating mechanism drives the chassis to rotate, and drives the petri dishes in the following layer to be transferred to the dispensing station through the rotation of the M-layer petri dish brackets; Step D, repeating Steps B and C until all petri dishes are dispensed.

[0023] In some embodiments of the present invention, after Step D, it further includes: Step E, maintaining the separated state of the lids and bottoms of each petri dish in the equipment for dispensing materials into stacked petri dishes; Step F, after manually triggering or after the timing period is completed, controlling the lifting mechanism to descend, driving each separation and positioning mechanism in the stacked petri dish lifting device into the retracted mode, and closing the lids and bottoms of each layer of petri dishes.

[0024] In some embodiments of the present invention, the equipment for dispensing materials into stacked petri dishes is the above-mentioned equipment for dispensing materials into stacked petri dishes, and Step B includes: Sub-step B1, controlling the lateral swing mechanism to swing the dispensing needle to a position away from the stacked petri dish lifting device; Sub-step B2, controlling the longitudinal displacement mechanism to move the lateral swing mechanism and the dispensing needle to the height of the petri dish to be dispensed; Sub-step B3, controlling the lateral swing mechanism to swing the dispensing needle above the petri dish to be dispensed for dispensing; Sub-step B4, repeating Sub-steps B1 to B3 until the material dispensing of the petri dishes in the current column is completed.

[0025] The first aspect of the present invention provides a bracket for a closing structure. In the closing structure, the cover has a larger lateral extension dimension than the lower housing; the bracket for the closing structure is in an overall disk-shaped structure, including: a central part, provided in the middle of the disk-shaped structure; N lifting forks, distributed on the periphery of the disk-shaped structure, and adjacent lifting forks are separated from each other by a partition part, N≥3; wherein, a guiding step is provided in the lifting fork, and this guiding step divides the lifting fork into two layers; the upper lifting part matches the shape and / or size of the cover of the closing structure; the lower fork entrance matches the shape and / or size of the lower housing of the closing structure.

[0026] In some embodiments of the present invention, the disk-shaped structure is: a disk-shaped structure or a regular U-shaped structure, U≥3.

[0027] In some embodiments of the present invention, the N lifting forks are evenly distributed on the periphery of the disk-shaped structure.

[0028] In some embodiments of the present invention, the covering structure is a double-layer covering structure, and the cover body is disposed on top of the lower shell body.

[0029] In some embodiments of the present invention, it also includes: S separation and positioning mechanisms, S ≥ 1, the separation and positioning mechanism is arranged in the central part or the dividing part, and it can be extended or retracted in a direction parallel to the central axis of the disc-shaped structure, wherein: when the separation and positioning mechanism is in a retracted state, the cover body of the covering structure is covered on the lower shell body, the fork entrance of the lifting fork is inserted into the outer side of the lower shell body of the covering mechanism, and the lifting part is located at the lower part of the cover body of the covering structure; when the separation and positioning mechanism is in an extended state, the lifting part of the lifting fork lifts the cover body of the covering structure upward to separate the cover body from the lower shell body.

[0030] In some embodiments of the present invention, S separation and positioning mechanisms are evenly arranged at the positions of the partitions outside the central axis of the disc-shaped structure, and S≥3.

[0031] In some embodiments of the present invention, the separation and positioning mechanism is one of the following mechanisms: a twist arm mechanism, a folding hinge mechanism, a pull rope mechanism, a chain mechanism, and a longitudinal fixed-length bolt mechanism.

[0032] In some embodiments of the present invention, S accommodating grooves extending radially along the disc-shaped structure are evenly arranged in the dividing portion outside the central portion; a bracket hinge axis is arranged in the accommodating groove on the side close to or away from the central axis of the disc-shaped structure, and the separation and positioning mechanism is a hinge arm mechanism; the hinge arm mechanism includes: a lower hinge arm, whose upper end is hinged to the bracket hinge axis; an upper hinge arm, whose lower end is hinged to the bracket hinge axis; the rotation range of the lower hinge arm and the upper hinge arm around the bracket hinge axis are respectively located below and above the disc-shaped structure.

[0033] In some embodiments of the present invention, both the lower hinge arm and the upper hinge arm are in sheet shape.

[0034] In some embodiments of the present invention, the height of the extension of the hinge arm mechanism is controlled by at least one of the following methods: ① the contact position between the end of the hinge arm and the wall of the accommodating groove on the opposite side; ② the maximum opening angle between the lower hinge arm and the upper hinge arm; ③ the length of the hinge arm; wherein the hinge arm is a lower hinge arm and / or an upper hinge arm.

[0035] In some embodiments of the present invention, the lifting fork is semicircular.

[0036] In some embodiments of the present invention, it also includes: a bracket spacing adjustment mechanism, which is arranged in the central part or the dividing part or the periphery of the disc-shaped structure, parallel to the central axis direction of the disc-shaped structure, and the height of the bracket spacing adjustment mechanism is adjustable.

[0037] In some embodiments of the present invention, N is selected from one of the following values: 4, 5, 6, 7, 8, 9, 10.

[0038] In some embodiments of the present invention, the covering structure is a petri dish; the cover body is a petri dish lid; the lower shell is a petri dish bottom; the covering structure bracket is a petri dish bracket; the lifting part matches the shape and size of the petri dish lid; the fork inlet matches the shape and size of the petri dish bottom.

[0039] The second aspect of the present invention provides a stacking covering structure lifting device. The stacking covering structure lifting device includes: a chassis; a bracket combination, including: M layers of covering structure brackets stacked longitudinally, arranged above the chassis, M≥2, and the covering structure bracket is the covering mechanism bracket as above; wherein, between the chassis and the lowermost covering structure bracket in the bracket combination, and between two adjacent upper and lower covering structure brackets in the bracket combination, they are connected by a separation and positioning mechanism; wherein, when each separation and positioning mechanism is in the retracted state, the M layers of covering structure brackets are retracted downward, and the stacked covering structure of M layers can be inserted into a certain column of lifting fork openings of the bracket combination; when each separation and positioning mechanism is in the extended state, the M layers of covering structure brackets are lifted upward, and the lifting part of the mth layer of covering structure bracket will lift the cover body of the mth layer of covering structure and the lower shell of the (m + 1)th layer of covering structure thereon, m = 1, 2, ……, M - 1.

[0040] In some embodiments of the present invention, the covering structure bracket is the covering mechanism bracket as above; the lower end of the lower hinge arm of the lowermost covering structure bracket is hinged to the corresponding hinge shaft on the chassis;; the lower end of the lower hinge arm of the mth layer of covering structure bracket is hinged to the upper end of the upper hinge arm of the (m - 1)th layer of covering structure bracket; the upper end of the upper hinge arm of the mth layer of covering structure bracket is hinged to the lower end of the lower hinge arm of the (m + 1)th layer of covering structure bracket, m = 1, 2, ……, M - 1.

[0041] III. Beneficial Effects

[0042] From the above technical solutions, it can be seen that the present invention has at least one of the following beneficial effects compared with the prior art:

[0043] (1) In the present invention, the petri dish bracket is integrally in a disc structure, and the outer lifting fork openings are in a semi-circular shape, and N lifting fork openings are evenly arranged on the periphery of the disc structure.

[0044] Through the above settings, as many petri dishes as possible can be accommodated and processed per unit area, making the most of space resources, and at the same time facilitating the rotation of the petri dish bracket with the chassis in the subsequent stacking petri dish material dispensing equipment.

[0045] (2) In the present invention, the function of the separation and positioning mechanism in the stacking petri dish lifting device is: ① to control the distance between adjacent petri dish brackets in the extended state, and the hinge mechanisms of the same length ensure that the distances are equal during the lifting and lowering process of the petri dish brackets; ② to control that each petri dish bracket does not rotate along the central axis in the extended state, but each petri dish bracket rotates synchronously.

[0046] With the above settings, in the stacked petri dish material dispensing device, the dispensing needle can align with each petri dish according to a preset program, while ensuring the distance between the brackets of the petri dish holder, so that the stacked petri dishes can be inserted without misalignment.

[0047] (3) In the present invention, the two arms of the arm mechanism are in sheet form, which can save storage space as much as possible.

[0048] (4) In the present invention, the petri dish holder further includes: a bracket spacing adjustment mechanism, which is arranged at the central part or the dividing part, parallel to the central axis direction of the disc-shaped structure, and the height of the bracket spacing adjustment mechanism is adjustable.

[0049] With the above settings, if the distance between adjacent petri dish holders in the stacked petri dish lifting device is too low, the height of the bracket spacing adjustment mechanism can be adjusted to increase the distance between adjacent petri dish holders, making it more convenient to use.

[0050] (5) In the present invention, the stacked petri dish lifting device includes: M layers of longitudinally stacked petri dish holders, which are arranged on the chassis, and the petri dish holders are the front petri dish holders; among them, when each separation and positioning mechanism is in the retracted state, the M layers of petri dish holders are retracted downward, and the stacked petri dishes of M layers can be inserted into the lifting fork openings of a certain column of the longitudinally stacked petri dish holders; when each separation and positioning mechanism is in the extended state, the M layers of petri dish holders are lifted upward, and the lifting part of the m-th layer of petri dish holder lifts the lid of the m-th layer of petri dish and the bottom of the (m + 1)-th layer of petri dish thereon, where m = 1, 2,..., M - 1.

[0051] With the above settings, the present invention can achieve a three-dimensional distribution of multiple stacks of petri dishes, greatly saving the occupied space. Moreover, through the separation and positioning mechanism, automatic opening and closing of a large number of petri dishes can be achieved simultaneously, greatly facilitating the work in the microbiology laboratory.

[0052] (6) In the present invention, the second end of the lifting steel wire rope is connected to the central position of the central part of the topmost petri dish holder through a universal rotating sling.

[0053] With the above settings, it is ensured that the steel wire rope does not rotate during the rotation of the petri dish holder with the chassis, offsetting the rotational torque.

[0054] (7) The three-dimensional distribution of petri dishes in the stacked petri dish material dispensing device occupies a small space and can be placed in equipment such as a laminar flow hood to achieve automatic quantitative filling of a small batch of culture media, which is particularly suitable for customized small-batch production.

[0055] In addition, through the cooperation of the lifting mechanism, the rotating mechanism, the needle displacement mechanism, etc., automatic and intelligent dispensing of small batches of materials is achieved, reducing the work intensity of the staff and saving time.

[0056] (8) For the existing petri dish dispensing instrument, the lid is closed immediately after each petri dish is dispensed. The moisture and water vapor in the culture medium cannot dry quickly, and water mist will form on the inner side of the lid, affecting the normal experiment.

[0057] With the above settings of the present invention, after the culture medium material is dispensed, it can wait for the culture medium to dry before closing the lid, successfully solving the problems of aseptic lid and reasonable placement, and ensuring the normal progress of the experiment.

[0058] In summary, using the stacked petri dish material dispensing equipment of the present invention, petri dishes can be placed in a stack, dispensed in a stack, and taken out in a stack, and the material dispensing is automated, greatly facilitating the experimental operation. Description of the Drawings

[0059] Figure 1A It is a perspective view of the petri dish bracket in the embodiment of the present invention.

[0060] Figure 1B It is an enlarged view of the articulated arm mechanism part in the petri dish bracket shown in FIG. 1.

[0061] Figure 2A and Figure 2B They are perspective views of the stacked petri dish lifting device in the extended state and the retracted state in the embodiment of the present invention respectively.

[0062] Figure 3A and Figure 3B They are respectively Figure 2A The front view and the left view of the stacked petri dish lifting device shown in the extended state.

[0063] Figure 4 It is a perspective view of the stacked petri dish material dispensing equipment in the extended state in the embodiment of the present invention.

[0064] Figure 5A and Figure 5B They are respectively Figure 4 The front views of the stacked petri dish material dispensing equipment shown in the extended state and the retracted state.

[0065] Figure 6A and Figure 6B They are respectively Figure 4 The left view and the right view of the stacked petri dish material dispensing equipment shown in the extended state.

[0066] Figure 7A and Figure 7B They are respectively Figure 4 The perspective view and the front view of the lifting mechanism in the stacked petri dish material dispensing equipment shown.

[0067] Figure 8A and Figure 8B They are respectively Figure 4Stereogram and front view of the needle displacement mechanism in the stacked petri dish material dispensing equipment shown Detailed implementation mode

[0068] The object of the present invention is to provide a petri dish tray, a stacked petri dish lifting device and a stacked petri dish material dispensing equipment with high space utilization rate, high flexibility in use and high degree of automation

[0069] To make the object, technical solution and advantages of the present invention clearer, the following further describes the present invention in detail in combination with specific implementation modes and with reference to the drawings

[0070] The present invention first provides a lid structure bracket; then, based on the specific implementation mode of this lid structure - the petri dish bracket, a stacked petri dish lifting device is provided; finally, based on this stacked petri dish lifting device, a stacked petri dish material dispensing equipment and method are provided, which will be described in sequence later

[0071] Figure 1A Stereogram of the petri dish bracket in the embodiment of the present invention Figure 1B Enlarged view of the hinge arm mechanism part in the petri dish bracket shown in Fig. 1 Figure 2A and Figure 2B Stereograms of the stacked petri dish lifting device in the extended state and the retracted state in the embodiment of the present invention respectively Figure 3A and Figure 3B respectively Figure 2A Front view and left view of the stacked petri dish lifting device shown in the extended state Figure 4 Stereogram of the stacked petri dish material dispensing equipment in the extended state in the embodiment of the present invention

[0072] Figure 5A and Figure 5B respectively Figure 4 Front views of the stacked petri dish material dispensing equipment shown in the extended state and the retracted state

[0073] Figure 6A and Figure 6B respectively Figure 4 Left view and right view of the stacked petri dish material dispensing equipment shown in the extended state

[0074] The first aspect of the present invention provides a petri dish bracket. Please refer to Figure 1A , Figure 1B , Figure 2A , Figure 2B , Figure 4 , the petri dish bracket 10 in the embodiment of the present invention is generally in a disc-shaped structure with a certain thickness, including

[0075] A central part 11, arranged in the middle of the disc-shaped structure

[0076] Six lifting fork openings 12 are distributed on the periphery of the disc-shaped structure, and adjacent lifting fork openings are separated from each other by a separating portion 13;

[0077] Three separating and positioning mechanisms, which can extend or retract along the direction parallel to the central axis of the disc-shaped structure, wherein:

[0078] When the separating and positioning mechanism is in the retracted state, the lid of the petri dish is covered on the bottom of the dish;

[0079] When the separating and positioning mechanism is in the extended state, the lifting portion lifts the lid of the dish upward to separate it from the bottom of the dish;

[0080] Among them, a guiding step 16 is provided in the lifting fork opening, and the guiding step 16 divides the lifting fork opening into two layers; the upper lifting portion 16A matches the shape of the lid A1 of the petri dish; the lower fork inlet 16B matches the shape of the bottom A2 of the petri dish.

[0081] The following will separately elaborate on each component of the petri dish bracket in this embodiment in detail.

[0082] As Figure 1A shown, in this embodiment, the petri dish bracket 10 is integrally in a disc structure, and the outer lifting fork openings are in a semi-circular shape, and the six lifting fork openings are evenly arranged on the periphery of the disc structure. Through the above settings, the present invention can accommodate and process as many petri dishes as possible per unit area, make the best use of space resources as much as possible, and at the same time provide convenience for the subsequent rotation of the petri dish bracket with the chassis in the stacked petri dish material packaging equipment, but the present invention is not limited thereto.

[0083] In other embodiments of the present invention, the petri dish bracket as a whole can also be in an oval or regular U-shaped (U≥3), but its space resource utilization rate and rotation convenience are inferior to this embodiment. Similarly, the number of lifting fork openings on the periphery of the disc-shaped structure can be adjusted according to the disc-shaped structure and the size of the petri dish. Preferably, N and U are selected from one of the following values: 4, 5, 6, 7, 8, 9, 10. These deformation modes are also within the protection scope of the present invention.

[0084] In other embodiments of the present invention, the lifting fork opening can also be a semi-circular shape extending outward along the tangent into a rectangular shape, as long as it does not affect the insertion of the petri dish.

[0085] Figure 1B It is an enlarged view of the hinge arm mechanism part in the petri dish bracket shown in Fig. 1. As Figure 1A and Figure 1BAs shown, in this embodiment, the separation and positioning mechanism is the hinge arm mechanism 14. Three accommodation grooves 15 extending radially along the disc-shaped structure are uniformly arranged in the partition part on the periphery of the central part, and a bracket hinge shaft 14A is arranged on the wall surface of the accommodation groove on the side close to the central axis of the disc-shaped structure. The hinge arm mechanism 14 includes: a lower hinge arm 14B, the upper end of which is hinged to the bracket hinge shaft; an upper hinge arm 14C, the lower end of which is hinged to the bracket hinge shaft; the rotation ranges of both the lower hinge arm 14B and the upper hinge arm 14C around the bracket hinge shaft are respectively located below and above the disc-shaped structure. Through the above settings, the present invention provides conditions for the retraction and elongation of each bracket in the subsequent stacked petri dish lifting device.

[0086] As Figure 1A and Figure 1B As shown, in a bracket combination composed of multiple petri dish brackets, the lower end of the lower hinge arm of the m-th layer cover structure bracket is hinged to the upper end of the upper hinge arm of the (m - 1)-th layer cover structure bracket through an inter-arm hinge shaft; the upper end of the upper hinge arm of the m-th layer cover structure bracket is hinged to the lower end of the lower hinge arm of the (m + 1)-th layer cover structure bracket through an inter-arm hinge shaft, where m = 1, 2, ……, M - 1.

[0087] As shown in the figure, in this embodiment, the two hinge arms are sheet-shaped. Such a setting can save the storage space as much as possible, that is, the space of the accommodation groove on the disc-shaped structure.

[0088] As shown in the figure, in the present invention, the function of the separation and positioning mechanism in the multi-layer petri dish brackets is as follows: ① control the distance between adjacent petri dish brackets in the extended state, and the hinge mechanisms of the same length ensure that the distances between the petri dish brackets are equal during the lifting and lowering process; ② control that each petri dish bracket will not rotate along the central axis in the extended state, but each petri dish bracket rotates synchronously. In the present invention, by setting this separation and positioning mechanism, the dispensing needle in the stacked petri dish material dispensing equipment can align with each petri dish according to a preset program, and at the same time ensure the distance between the petri dish bracket supports, so that the stacked petri dishes can be inserted without position disorder.

[0089] As shown in the figure, in this embodiment, the contact between the end of the hinge arm and the wall surface of the opposite accommodation groove is point contact. Through this point contact, the rotation angle of the hinge is restricted, thereby restricting the elongation height of each layer of petri dish brackets, so as to ensure that the distances between each layer of petri dish brackets are the same.

[0090] As Figure 2B As shown, in the retracted state of the stacked petri dish lifting device, it is necessary to insert a stack of petri dishes into a certain row of fork openings of the stacked petri dish lifting device. If the distance between adjacent petri dish brackets is too low, some petri dishes will be stuck and cannot be inserted into the stack of petri dishes smoothly.

[0091] To solve the above problems, the petri dish bracket of this embodiment further includes: a bracket spacing adjustment mechanism, which is arranged at the central part, or the divided part, or the periphery of the disc-shaped structure, parallel to the central axis direction of the disc-shaped structure, and the height of the bracket spacing adjustment mechanism is adjustable. If the distance between adjacent petri dish brackets in the stacked petri dish lifting device is too low, the distance between adjacent petri dish brackets can be increased by adjusting the height of the bracket spacing adjustment mechanism, making it more flexible to use.

[0092] Regarding the separation and positioning mechanism, the following aspects need to be explained:

[0093] (1) Control of the elongation height

[0094] As before, in this embodiment, the distance between adjacent petri dish brackets in the extended state is controlled by the point contact between the end of the hinge arm and the wall surface of the accommodating groove on the opposite side, but the present invention is not limited thereto.

[0095] Similarly using the hinge property, the distance between adjacent petri dish brackets can also be controlled by the maximum opening angle of the hinge axis between the arms, the length of the hinge arm, etc. These deformation methods can also achieve the present invention.

[0096] (2) Forms of the separation and positioning mechanism

[0097] In the present invention, the function of the separation and positioning mechanism is to achieve the equidistant separation of two layers of petri dish brackets. In this embodiment, the separation and positioning mechanism adopts a double hinge arm mechanism, but the present invention is not limited thereto.

[0098] In other embodiments of the present invention, also being a hinge arm mechanism, a triple hinge arm mechanism or a quadruple hinge arm mechanism can be used to replace the double hinge arm mechanism in this embodiment, and the position of the bracket hinge axis needs to be adjusted if necessary.

[0099] In addition to the hinge arm mechanism, other forms of separation and positioning mechanisms can also be used, such as: a folding hinge mechanism, a pull rope mechanism, a chain mechanism, a longitudinal fixed-length bolt mechanism. Taking the longitudinal fixed-length bolt mechanism as an example, the adjacent layer bracket mechanism can also be equidistantly separated by using a fixed-length bolt to pull the lower layer from the upper layer. At the same time, the stiffness of the bolt can ensure the alignment of the upper and lower layer petri dish brackets during rotation.

[0100] (3) Number and position of the separation and positioning mechanism

[0101] In this embodiment, three separation and positioning mechanisms are arranged in the outer divided part, but the present invention is not limited thereto.

[0102] In other embodiments of the present invention, the number and position of the separation and positioning mechanism can also be set as needed. If the separation and positioning mechanism is located at the center of the disc-shaped structure, only one separation and positioning mechanism can be set. If the separation and positioning mechanism is not located on the central axis of the disc-shaped structure, preferably more than three separation and positioning mechanisms are evenly arranged on the periphery of the disc-shaped structure to ensure the stability of the plane where each petri dish holder is located. At this time, the separation and positioning mechanism can be located either at the isolation part or at the central part, as long as the size permits.

[0103] (4) Presence or absence of the separation and positioning mechanism

[0104] As mentioned above, the separation and positioning mechanism is mainly provided to facilitate the control of the spacing and rotation of the petri dish holders in the stacked petri dish lifting device. If it is not used in the stacked petri dish lifting device, the separation and positioning mechanism can be omitted.

[0105] Those skilled in the art should understand that the above deformation methods can also implement the present invention and are also within the protection scope of the present invention.

[0106] (5) Applicable to any double-layer covering structure

[0107] Although the above is described by taking the petri dish holder as an example, the present invention can also be applied to other types of double-layer covering structures. As long as the lateral extension dimension of the cover in the covering structure is larger than that of the lower housing, the lifting and lowering of the cover can be achieved by matching the shape and / or size of the lifting part with the cover, and the shape and / or size of the fork inlet with the lower housing, thereby realizing the opening and closing of the lower housing. Similar deformation methods can also implement the present invention and are also within the protection scope of the present invention.

[0108] In addition, besides the field of microbial detection, the present invention can also be applied in the fields of food and drug production, etc., and is also within the protection scope of the present invention.

[0109] So far, the introduction of the covering structure bracket of the present invention is completed.

[0110] Based on the petri dish holder of the above embodiments, the second aspect of the present invention provides a stacked petri dish lifting device. Please refer to Figure 2A 、 Figure 2B 、 Figure 3A 、 Figure 3B , the stacked petri dish lifting device according to the embodiment of the present invention includes:

[0111] Chassis 20;

[0112] M layers of longitudinally stacked petri dish holders 10, arranged on the chassis, M≥2, and the petri dish holder is the previous petri dish holder;

[0113] Among them, when each separation and positioning mechanism is in the retracted state, the M-layer petri dish bracket retracts downward, and the M-layer stacked petri dishes can be inserted into the lifting fork openings of a certain column of the longitudinally stacked petri dish brackets; when each separation and positioning mechanism is in the extended state, the M-layer petri dish bracket lifts upward, and the lifting part of the m-th layer petri dish bracket lifts the lid of the m-th layer petri dish and the bottom of the (m + 1)-th layer petri dish thereon, where m = 1, 2, ……, M - 1.

[0114] Through the above settings, the present invention can realize the three-dimensional distribution of multiple stacks of petri dishes, greatly saving the occupied space. Moreover, through the separation and positioning mechanism, automatic opening and closing of a large number of petri dishes can be realized simultaneously, greatly facilitating the microbial experiment work.

[0115] In this embodiment, the separation and positioning mechanism is a hinge arm mechanism; S accommodating grooves extending radially along the disc-shaped structure are uniformly arranged in the dividing part on the periphery of the central part; a bracket hinge shaft is arranged in the accommodating groove on one side close to or far from the central axis of the disc-shaped structure, and the separation and positioning mechanism is a hinge arm mechanism; the hinge arm mechanism includes: a lower hinge arm, the upper end of which is hinged to the bracket hinge shaft; an upper hinge arm, the lower end of which is hinged to the bracket hinge shaft; the rotation ranges of the lower hinge arm and the upper hinge arm around the bracket hinge shaft are respectively located below and above the disc-shaped structure.

[0116] Regarding the hinge arm mechanism of the stacked petri dish lifting device, the following aspects need to be specifically explained:

[0117] (1) The hinge arm mechanism between two adjacent petri dish brackets up and down

[0118] As Figure 1A shown, two adjacent petri dish brackets up and down are connected by three groups of hinge arm mechanisms. For one of the groups of hinge arm mechanisms, the upper end of the upper hinge arm of the lower-layer petri dish bracket is hinged to the lower end of the lower hinge arm of the upper-layer petri dish bracket.

[0119] Specifically, the lower end of the lower hinge arm of the m-th layer petri dish bracket is hinged to the upper end of the upper hinge arm of the (m - 1)-th layer petri dish bracket; the upper end of the upper hinge arm of the m-th layer petri dish bracket is hinged to the lower end of the lower hinge arm of the (m + 1)-th layer petri dish bracket, where m = 1, 2, ……, M - 1.

[0120] (2) The lowest-layer petri dish bracket

[0121] Among them, the lower end of the lower hinge arm of the lowest-layer petri dish bracket is hinged to the corresponding hinge shaft on the chassis; the upper end of the upper hinge arm is hinged to the lower end of the hinge arm of the second-lowest-layer flat bracket.

[0122] Regarding the specific content of the petri dish bracket in the stacked petri dish lifting device of this embodiment, reference can be made to the relevant description of the prior embodiment, which will not be elaborated here.

[0123] It should be noted that although this embodiment is described by taking the stacked petri dish lifting device as an example, the present invention is not limited thereto. In other embodiments of the present invention, the double-layer covering structure lifting structure that meets specific conditions is equally applicable. Through the present invention, the lifting and lowering of the covers of multiple groups of covering structures can also be realized, and thus the opening and closing of the lower housing can be achieved. Similar deformation methods can also implement the present invention and are equally within the protection scope of the present invention.

[0124] So far, the introduction of the stacked covering structure lifting device of the present invention is completed.

[0125] Based on the stacked petri dish lifting device of the above embodiment, the third aspect of the present invention provides a stacked petri dish material dispensing device. Please refer to Figure 4 、 Figure 5A 、 Figure 5B , Figure 6A 、 Figure 6B , the stacked petri dish material dispensing device of this embodiment includes:

[0126] Frame 30;

[0127] The stacked petri dish lifting device of the above embodiment, the chassis of which is fixed on the frame;

[0128] Lifting mechanism 40, which controls the M-layer petri dish bracket to retract downward or lift upward;

[0129] Rotating mechanism 50, which is arranged inside or below the chassis and drives the chassis to rotate and thus drives the longitudinally stacked M-layer petri dish brackets to rotate;

[0130] Needle displacement mechanism 60, which drives the tip of the dispensing needle 71 to move between the petri dishes in the stacked petri dish lifting device in the extended state;

[0131] Material supply mechanism, connected to the dispensing needle 71;

[0132] Control mechanism, signal-connected to the lifting mechanism, rotating mechanism, and needle displacement mechanism.

[0133] The following will elaborate on each component of the stacked petri dish material dispensing device of this embodiment.

[0134] Regarding the stacked petri dish lifting device, reference can be made to the description of the previous embodiment, and it will not be repeated here.

[0135] In this embodiment, the material supply mechanism is a peristaltic pump 73, which drives the material to flow along the dispensing pipeline 72 to the dispensing needle 71 to achieve precise quantitative dispensing of the material. However, the present invention is not limited thereto. In other embodiments of the present invention, other types of material supply mechanisms can also be used.

[0136] In this embodiment, the frame is a square frame, and the bottom and the top are provided with mounting plates for supporting each mechanism. The rotating mechanism 50, the lower end of the guide rail in the needle displacement mechanism, the peristaltic pump 73, etc. are all mounted on the bottom mounting plate. While the pulley fixing seat of the lifting mechanism, the lifting motor fixing seat, the upper end of the guide rail in the needle displacement mechanism, etc. are all mounted on the top mounting plate.

[0137] In this embodiment, the rotating mechanism 50 is arranged at the lower part of the chassis, and it drives the chassis to rotate and further drives the M-layer petri dish holders stacked longitudinally to rotate, so that the petri dish rotates to the dispensing station.

[0138] In this embodiment, the lifting mechanism 40 is used to drive the M-layer petri dish holder to rise, so that the petri dishes placed therein are separated. Figure 7A and Figure 7B are respectively Figure 1A the perspective view and the front view of the lifting mechanism in the stacked petri dish material dispensing device shown. Please continue to refer to Figure 7A 、 Figure 7B , in this embodiment, the lifting mechanism 40 includes:

[0139] The reversing pulley 41 is installed on the top of the frame above the stacked petri dish lifting device through the pulley fixing seat 42, so that the steel wire rope changes from the horizontal direction around the winding wheel to the vertical direction pulling the topmost petri dish tray;

[0140] The lifting motor 43 is installed on the top of the frame through the lifting motor fixing seat 44, and its torque output end is connected to the winding wheel 45, and it drives the winding wheel to rotate to control the length of the steel wire rope;

[0141] The lifting cable 46 is a steel wire rope, its first end is fixed on the winding wheel 45, and its second end passes through the reversing pulley 41 and is connected to the central part of the topmost petri dish holder.

[0142] In this embodiment, the second end of the steel wire rope is connected to the central position of the central part of the topmost petri dish holder through the universal rotating sling 47. In the present invention, the steel wire rope and the petri dish holder are connected through the universal rotating sling to ensure that the steel wire rope does not rotate during the rotation of the petri dish holder with the chassis, and the rotational torque is offset.

[0143] The needle displacement mechanism 60 is used to move the dispensing needle in the vertical direction so that it reaches each layer of the dispensing station, that is, a position slightly above the bottom of the petri dish to be dispensed. Figure 8A and Figure 8B are respectively Figure 1A the perspective view and the front view of the needle displacement mechanism in the stacked petri dish material dispensing device shown. Please continue to refer to Figure 8A 、 Figure 8B, in this embodiment, the needle displacement mechanism 60 includes: a longitudinal displacement mechanism, which adopts one of the following forms: a slide rail form, a lead screw form, or a gear transmission form; a lateral swing mechanism, which is installed on the longitudinal displacement mechanism; wherein, the dispensing needle is installed on the lateral swing mechanism.

[0144] Specifically, in this embodiment, the lateral swing mechanism is a servo motor 61, which drives the dispensing needle to swing. The longitudinal displacement mechanism adopts the form of a slide rail and includes:

[0145] A guide rail 62, which is arranged along the direction parallel to the central axis of the disc-shaped structure and serves as a support for the lifting of the needle and a guide for the lifting movement of the needle;

[0146] An upper synchronous pulley 63 and a lower synchronous pulley 64, which are respectively arranged at the top and bottom of the guide rail;

[0147] A synchronous belt 65, which is wound around the upper synchronous pulley and the lower synchronous pulley;

[0148] A needle lifting motor 66, whose torque output shaft is connected to the driving side of the lower synchronous pulley through a coupling;

[0149] A guide rail slider 67, which can slide up and down on the guide rail, is connected to the synchronous belt, and fixes the servo motor;

[0150] Wherein, the needle lifting motor 66 outputs torque to drive the lower synchronous pulley 64 to rotate. The lower synchronous pulley 64 drives the synchronous belt 65 to move, and the synchronous belt 65 drives the guide rail slider 67 to move up and down, thereby driving the dispensing needle 71 to move up and down.

[0151] It should be noted that in addition to the above implementation methods, the lifting mechanism and the needle lifting mechanism in the present invention can also adopt transmission methods such as lead screws or gears, and can also achieve corresponding functions. Those skilled in the art should understand the corresponding implementation methods and will not be elaborated here.

[0152] From the above description, it can be seen that in the layered petri dish material dispensing equipment of this embodiment, the petri dishes are three-dimensionally distributed, and the equipment occupies a small space and can be placed in equipment such as a laminar flow hood to achieve automatic quantitative filling of a small batch of culture media, which is particularly suitable for customized small batch production.

[0153] Based on the layered petri dish material dispensing equipment of the above embodiment, the third aspect of the present invention provides a layered petri dish material dispensing method.

[0154] In this embodiment, in the initial state, stacked petri dishes are inserted into the lifting fork openings of the retracted petri dish bracket group. Specifically, when the bracket combination is in a compressed state, ten petri dishes in a row are manually placed on the petri dish brackets at the same time, one petri dish on each layer of petri dish brackets. In this way, multiple rows of petri dishes can be placed on the petri dish brackets.

[0155] The material sub-packaging method of this embodiment is executed by the control mechanism in the stacked petri dish material sub-packaging equipment, including:

[0156] Step A: Control the lifting mechanism to rise, driving each separation and positioning mechanism in the stacked petri dish lifting device into the extended state. The lifting part of each petri dish bracket lifts the lid of the petri dish on this layer and the bottom of the petri dish on the upper layer together.

[0157] Specifically, the lifting motor 43 of the lifting mechanism runs, winding the steel wire rope 46. The steel wire rope 46 contracts, driving the topmost petri dish bracket to separate upward. Due to the action of the hinge mechanism, the upper petri dish bracket moves vertically upward, driving the lower petri dish bracket to also move vertically upward. And after each bracket is separated, due to the same hinge length, the distance between each petri dish bracket is ensured to be equal. During the rising and separating process of the M-layer petri dish brackets, the petri dish brackets lift the petri dishes while rising. The lifting target is the lid, and the bottom of the upper layer is placed on the lid of the lower layer, separating the bottom and the lid to create space for material sub-packaging.

[0158] Step B: Control the needle displacement mechanism to drive the sub-packaging needle to move above the petri dish to be sub-packaged for material sub-packaging until the sub-packaging of the petri dishes in the current column is completed.

[0159] Among them, step B further includes: sub-step B1, controlling the lateral swing mechanism to swing the sub-packaging needle to a position away from the stacked petri dish lifting device; sub-step B2, controlling the longitudinal displacement mechanism to move the lateral swing mechanism and the sub-packaging needle to the height of the petri dish to be sub-packaged; sub-step B3, controlling the lateral swing mechanism to swing the sub-packaging needle above the petri dish to be sub-packaged for sub-packaging; sub-step B4, repeatedly executing sub-steps B1 to B3 until the material sub-packaging of the petri dishes in the current column is completed.

[0160] Specifically, when the M-layer petri dish brackets rise to the highest point and each layer of petri dishes is completely separated, the needle lifting motor 66 of the needle displacement mechanism runs, driving the upper and lower synchronous wheels and the synchronous belt 65 to run, thereby driving the guide rail slider 67 to lift and lower. The guide rail slider is guided by the guide rail 62 to ensure vertical movement. At the same time, the servo motor 61 and the sub-packaging needle 71 also move synchronously. When the needle lifts to the sub-packaging height, the shaft of the servo motor 61 rotates and swings, moving the sub-packaging needle 71 into the interior of the petri dish directly above the petri dish to be sub-packaged. The peristaltic pump 72 runs, pumping the logistics into the petri dish through the sub-packaging pipeline 73. After the sub-packaging is completed, the servo motor rotates reversely and swings, moving the sub-packaging needle 71 outside the petri dish to prevent the needle from touching or interfering with other components during the lifting and lowering process of the sub-packaging needle.

[0161] Step C: The rotating mechanism drives the chassis to rotate, and drives the petri dishes in the next column to be transferred to the sub-packaging station through the rotation of the M-layer petri dish brackets.

[0162] After the current column of petri dishes is filled, the rotating mechanism drives the chassis to rotate and the M-layer petri dish bracket to move. Due to the three groups of hinge mechanisms, each layer of petri dish bracket and the petri dishes rotate synchronously, moving the unfilled petri dishes to the filling station. During the rotation process, due to the relative action of the universal rotating sling 47, the steel wire rope is prevented from twisting radially.

[0163] Step D: Repeat steps B and C until all petri dishes are filled.

[0164] Step E: Keep the lids and bottoms of the petri dishes in the separated state in the stacked petri dish material filling equipment.

[0165] Step F: After manually triggering or after the timing period is completed, control the lifting mechanism to descend, driving each separation and positioning mechanism in the stacked petri dish lifting device into the retracted mode, and closing the lids and bottoms of each layer of petri dishes.

[0166] Specifically, the lifting motor 43 of the lifting mechanism runs, the winding wheel 45 runs in reverse, the steel wire rope 46 elongates, and the petri dish lifting device, each layer of bracket descends, and the lid and bottom are concentrically closed together. Due to the three groups of hinge mechanisms, it is ensured that the angles of each layer of petri dish brackets are consistent and will not change, thus ensuring that the bottom and lid of the petri dish are concentric. After the bottom and lid of the petri dish are completely closed, the staff can take out the filled petri dishes as a whole column.

[0167] It can be seen that in actual experiments, using the stacked petri dish material filling equipment of the present invention, petri dishes can be placed in a stack, filled in a stack, and taken out in a stack, and the material filling is automated, which greatly facilitates the experimental operation.

[0168] As described above, in the prior art, after each petri dish is filled, the lid is immediately closed, and the moisture and water vapor in the culture medium cannot dry quickly, which will form water mist on the inner side of the lid and affect the normal experiment. The structure in the patent can wait for the culture medium to dry before closing the lid after filling, successfully solving the problem of the reasonable placement of the sterile lid of the petri dish and solving the above problems.

[0169] So far, the various embodiments of the present invention have been introduced. Based on the above description, those skilled in the art should have a clear understanding of the present invention.

[0170] It should be noted that for some implementation manners, if they are not the key content of the present invention and are well-known to those of ordinary skill in the art, then due to space limitations, they are not described in detail in the specification drawings or the text. At this time, reference can be made to the relevant prior art for understanding.

[0171] Regarding the ordinal numbers used in the present invention, such as "first", "second", "third", "main", "sub", as well as Arabic numerals, letters, etc., which are used to modify the corresponding elements (or steps), their original intention is only to enable an element (or step) with a certain name to be clearly distinguished from another element (or step) with the same name, and does not mean that the element (or step) has any ordinal number, nor does it represent the order of one element (or step) and another element (or step).

[0172] Regarding the steps in the present invention, unless specifically described or steps that must occur in sequence, the order of the steps is not limited to those listed above and can be changed or rearranged according to the required design.

[0173] Regarding the directional terms mentioned in the present invention, such as "center", "lateral", "longitudinal", "top", "bottom", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., the indicated orientation or positional relationship is only based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. Also, throughout the drawings, the same elements are represented by the same or similar reference numerals. And, the shapes and sizes of the components in the figures do not reflect the actual size and scale, but only illustrate the content of the embodiments of the present invention.

[0174] Regarding the terms "connected" and "coupled" mentioned in the present invention, unless otherwise clearly defined and limited, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the connection of a certain part of two elements. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0175] The present invention can also be implemented as a device or apparatus program (such as a computer program and a computer program product) for performing part or all of the methods described herein. Such a program implementing the present invention can be stored on a computer-readable medium, or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0176] The present invention can be implemented by means of hardware including several different components and by means of a properly programmed computer. Each component embodiment of the present invention can be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that in the claims and the specification of the present invention, the word "comprising" does not exclude the existence of elements (or steps) not listed in the claims. The word "a" or "an" preceding an element (or step) does not exclude the existence of a plurality of such elements (or steps).

[0177] Moreover, the purpose of providing the above embodiments is only to make the present invention meet legal requirements, and the present invention can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein.

[0178] Similarly, it should be understood that, in order to streamline the present invention, in the above description of the exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present invention should not be construed as reflecting the intention that the claimed invention requires more features than those expressly recited in each claim. Rather, as reflected in the claims, each inventive aspect lies in less than all the features of the preceding single embodiment. Also, the embodiments can be used in combination with each other or with other embodiments based on design and reliability considerations, that is, the technical features in different embodiments can be freely combined to form more embodiments. Therefore, the claims following the specific embodiments are hereby expressly incorporated into the specific embodiments, where each claim itself serves as a separate embodiment of the present invention.

[0179] In the above specific embodiments, the purpose, technical means and beneficial effects of the present invention have been described in detail. It should be understood that the purpose of the detailed description is for those skilled in the art to understand the present invention more clearly and is not used to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A stacked petri dish lifting device, characterized in that, Comprising: Chassis; Bracket assembly, comprising: M layers of petri dish brackets stacked longitudinally, disposed above the chassis, M≥2, the petri dish bracket as a whole is in a disc-shaped structure, comprising: Central part, disposed in the middle of the disc-shaped structure; N lifting fork openings, distributed on the periphery of the disc-shaped structure, adjacent lifting fork openings are separated from each other by a partition part, N≥3, the lifting fork opening is provided with a guiding step, and the guiding step divides the lifting fork opening into two layers; the upper lifting part matches the shape of the petri dish lid; the lower fork inlet matches the shape of the petri dish bottom; S separating and positioning mechanisms, which can extend or retract along the direction parallel to the central axis of the disc-shaped structure, S≥1; Wherein, between the chassis and the lowermost petri dish bracket in the bracket assembly, and between two adjacent upper and lower petri dish brackets in the bracket assembly, they are connected by the separating and positioning mechanisms; Wherein, when each separating and positioning mechanism is in the retracted state, the M layers of petri dish brackets are retracted downward, and the stacked petri dishes of M layers can be inserted into a certain column of lifting fork openings of the bracket assembly; when each separating and positioning mechanism is in the extended state, the M layers of petri dish brackets are lifted upward, and the lifting part of the mth layer of petri dish bracket lifts the lid of the mth layer of petri dish and the bottom of the (m + 1)th layer of petri dish thereon, m = 1, 2, ……, M - 1.

2. The stacked petri dish lifting device according to claim 1, wherein The disc-shaped structure is: a disc-shaped structure or a regular U-shaped structure, U≥3; And / or, the S separating and positioning mechanisms are evenly arranged at the position of the partition outside the central axis of the disc-shaped structure, S≥3; And / or, the separating and positioning mechanism is one of the following mechanisms: a hinge arm mechanism, a folding hinge mechanism, a pulling rope mechanism, a chain mechanism, a longitudinal fixed-length bolt mechanism.

3. The stacked petri dish lifting device according to claim 2, wherein S accommodating grooves extending radially along the disc-shaped structure are evenly arranged in the partition outside the central part; a bracket hinge shaft is arranged in the accommodating groove on one side close to or far from the central axis of the disc-shaped structure, The separating and positioning mechanism is a hinge arm mechanism; the hinge arm mechanism comprises: a lower hinge arm, the upper end of which is hinged to the bracket hinge shaft; an upper hinge arm, the lower end of which is hinged to the bracket hinge shaft; the rotation ranges of the lower hinge arm and the upper hinge arm around the bracket hinge shaft are respectively located below and above the disc-shaped structure; Wherein, the lower end of the lower hinge arm of the lowermost petri dish bracket is hinged to the corresponding hinge shaft on the chassis; the lower end of the lower hinge arm of the mth layer of petri dish bracket is hinged to the upper end of the upper hinge arm of the (m - 1)th layer of petri dish bracket; the upper end of the upper hinge arm of the mth layer of petri dish bracket is hinged to the lower end of the lower hinge arm of the (m + 1)th layer of petri dish bracket, m = 1, 2, ……, M - 1.

4. A stacking petri dish material dispensing device, characterized in that, Comprising: Frame; The stacked petri dish lifting device according to claim 1, the chassis of which is fixed on the frame; Lifting mechanism, which controls the M layers of petri dish brackets in the stacked petri dish lifting device to retract downward or lift upward; Rotating mechanism, disposed inside or below the chassis, which drives the chassis to rotate and thereby drives the bracket assembly to rotate; Needle displacement mechanism, which drives the tip of the dispensing needle to move between the petri dishes in the M layers of petri dish brackets in the extended state; The control mechanism is signal - connected to the lifting mechanism, rotating mechanism, and needle displacement mechanism.

5. The stacked petri dish material dispensing device according to claim 4, wherein the lifting mechanism adopts one of the following forms: lifting form, lead - screw form, gear drive; and / or, the needle displacement mechanism includes: a longitudinal displacement mechanism, which adopts one of the following forms: slide - rail form, lead - screw form, gear - drive form; a lateral swing mechanism, installed on the longitudinal displacement mechanism; wherein, the dispensing needle is installed on the lateral swing mechanism.

6. The stacked petri dish material dispensing device according to claim 5, characterized in that, The lifting mechanism adopts the lifting form, and the lifting mechanism includes: a reversing pulley, installed on the frame above the stacked petri dish lifting device through a pulley fixing seat; a lifting motor, installed on the top of the frame through a motor fixing seat, and its torque output end is connected to a wire winding wheel; a lifting cable, whose first end is fixed on the wire winding wheel, and the second end passes through the reversing pulley and is connected to the top - most petri dish bracket in the bracket combination.

7. The stacked petri dish material dispensing device according to claim 6, wherein the second end of the lifting cable is connected to the top - most petri dish bracket through a universal rotating sling.

8. The stacked petri dish material dispensing device according to claim 5, wherein In the needle displacement mechanism, the lateral swing mechanism is a servo - motor; and / or, the longitudinal displacement mechanism adopts the slide - rail form, and includes: a guide rail, arranged along the direction parallel to the central axis of the disc - shaped structure; an upper synchronous pulley and a lower synchronous pulley, respectively arranged at the top and bottom of the guide rail; a needle lifting motor, whose torque output shaft is connected to the driving side of the lower synchronous pulley through a coupling; a synchronous belt, wound around the upper synchronous pulley and the lower synchronous pulley; a guide - rail slider, which can move up and down on the guide rail, is connected to the synchronous belt, and fixes the servo - motor; wherein, the needle lifting motor outputs torque to drive the lower synchronous pulley to rotate, the lower synchronous pulley drives the synchronous belt to move, the synchronous belt drives the guide - rail slider to move up and down, and further drives the dispensing needle to move up and down.

9. A method for dispensing materials in a stacked petri dish, characterized in that, The material dispensing is performed by the stacked petri dish material dispensing device according to claim 4, and is executed by the control mechanism; In the initial state, stacked petri dishes are inserted into the lifting forks of the stacked petri dish lifting device in the retracted state. The stacked petri dish material dispensing method includes: Step A, control the lifting mechanism to rise, driving each separation and positioning mechanism in the stacked petri dish lifting device into the extended state, and the lifting parts of each petri dish bracket lift the lid of the current - layer petri dish and the bottom of the upper - layer petri dish together. Step B, control the needle displacement mechanism to drive the dispensing needle to move above the petri dish to be dispensed for material dispensing, and repeat the execution until the material dispensing of the current - column petri dishes is completed. Step C, the rotating mechanism drives the chassis to rotate, and drives the following petri dishes to be transferred to the dispensing station through the rotation of the M - layer petri dish brackets. Step D, repeat Step B and Step C until all petri dishes are dispensed.

10. The material dispensing method according to claim 9, wherein after Step D, it further includes: Step E, maintaining the separated state of the lids and bottoms of each petri dish in the stacked petri dish material dispensing device. Step F, after manual triggering or completion of the timing period, control the lifting mechanism to descend, driving each separation and positioning mechanism in the stacked petri dish lifting device into the retraction mode, and closing the lid and bottom of each layer of petri dishes; And / or, the stacked petri dish material dispensing device is the stacked petri dish material dispensing device as described in claim 7, and the step B includes: Sub-step B1, control the lateral swing mechanism to swing the dispensing needle to a position away from the stacked petri dish lifting device; Sub-step B2, control the longitudinal displacement mechanism to move the lateral swing mechanism and the dispensing needle to the height where the petri dish to be dispensed is located; Sub-step B3, control the lateral swing mechanism to swing the dispensing needle above the petri dish to be dispensed for dispensing; Sub-step B4, repeatedly execute sub-steps B1 to B3 until the material dispensing of the petri dishes in the current column is completed.

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