Scribing mechanism

Abstract

The utility model relates to a scribing mechanism, and relates to the technical field of microbe inoculation scribing equipment, the scribing mechanism comprises a base, an inoculation needle placed on the base and a three-axis driving module for driving the inoculation needle to move, and the three-axis driving module is connected with the inoculation needle through a connecting assembly and is used for driving the inoculation needle to move along the X-axis direction, the Y-axis direction and the Z-axis direction. The inoculating needle is located on the base before scribing, the three-axis driving module drives the inoculating needle to be separated from the base through the connecting assembly, under the action of the three-axis driving module, the inoculating needle moves in the X-axis direction, the Y-axis direction and the Z-axis direction to achieve sampling and scribing, and after scribing is completed, the three-axis driving module drives the inoculating needle to move back to the base. In this way, mechanical microbial inoculation lineation operation is completed, manual inoculation needle mounting and dismounting are not needed, and therefore the convenience of lineation operation is improved.

Description

Technical Field

[0001] This utility model relates to the field of microbial inoculation marking equipment technology, and in particular to a marking mechanism. Background Technology

[0002] The streak plating method is a commonly used technique for microbial isolation and culture. The operator uses an inoculation loop to pick up the sample to be isolated and streaks it on a sterile agar plate. With each streak, the number of microbial cells decreases and they gradually disperse, promoting the formation of single colonies to facilitate subsequent isolation, purification, and identification. With advancements in technology, most current streak plating methods utilize mechanical mechanisms.

[0003] In related technologies, one can refer to Chinese utility model patent with authorization announcement number CN204981874U, which discloses a marking mechanism, including linear module I, linear module II, linear module III, motor A, motor B and motor C. Linear module I is a linear module in the X-axis direction, and has a slide rail I that cooperates with the bottom slide rail of linear module II in the Z-axis direction perpendicular to the X-axis. The inoculation ring is set on linear module III. The three linear modules drive the inoculation ring to move in the XYZ directions, thereby completing the marking, thereby reducing labor costs, improving work efficiency and mechanizing the operation process.

[0004] Although it can achieve multi-angle marking of the inoculation loop, the operator needs to install the inoculation loop on the straight module before inoculation and disassemble it after inoculation for sterilization or other treatments, which reduces the convenience of the marking operation. Utility Model Content

[0005] To improve the convenience of line marking operations, this utility model provides a line marking mechanism.

[0006] This application provides a marking mechanism, which adopts the following technical solution:

[0007] A marking mechanism includes a base, an inoculation needle placed on the base, and a three-axis drive module for driving the inoculation needle to move. The three-axis drive module is connected to the inoculation needle through a connecting component and is used to drive the inoculation needle to move along the X-axis, Y-axis and Z-axis directions.

[0008] By adopting the above technical solution, the inoculation needle is located on the base before streaking. The three-axis drive module drives the inoculation needle to detach from the base through the connecting component. Under the action of the three-axis drive module, the inoculation needle moves along the X-axis, Y-axis and Z-axis to achieve sampling and streaking. After streaking is completed, the three-axis drive module drives the inoculation needle back to the base, thereby completing the mechanized microbial inoculation streaking operation. There is no need for manual installation and removal of the inoculation needle, thus improving the convenience of the streaking operation.

[0009] Optionally, the inoculation needle extends vertically and has an inoculation ring at its lower end, and the connecting assembly includes:

[0010] Mounting plate, which extends vertically and whose top end is connected to the three-axis drive module;

[0011] A magnet, wherein the magnet is disposed at the bottom end of the mounting plate;

[0012] A connecting sleeve is coaxially disposed at the tip of the inoculation needle, and a metal part is provided on the connecting sleeve for adsorption and connection with a magnet.

[0013] By adopting the above technical solution, the three-axis drive module moves the mounting plate to the top of the base and then moves vertically downwards, causing the magnet to approach the connecting sleeve and adhere to the metal part, thereby connecting the three-axis drive module and the inoculation needle. At this time, the three-axis drive module moves the mounting plate, which in turn moves the inoculation needle to perform sampling, streaking, and other operations. After the operation is completed, the three-axis drive module drives the inoculation needle back to the base, disconnecting the magnetic connection, which allows the inoculation needle to be disassembled. This improves the overall mechanization of the microbial streaking operation and thus enhances the convenience of the streaking operation.

[0014] Optionally, the tip of the inoculation needle is coaxially fitted with a sleeve, the connecting sleeve has an installation cavity, the bottom wall of the installation cavity has a vertically extending installation hole that penetrates the lower surface of the connecting sleeve, the sleeve is slidably fitted in the installation hole and extends into the installation cavity, and the installation cavity is provided with an anti-detachment component to prevent the inoculation needle from falling downward.

[0015] By adopting the above technical solution, the inoculation needle moves with the movement of the mounting plate. During the streaking operation, the mounting plate drives the inoculation ring to press against the surface of the culture medium. Under the pressure of the culture medium, the inoculation ring pushes the sleeve to move upward and float. At this time, the anti-detachment component limits the inoculation needle, so that the inoculation ring can press against the surface of the culture medium to perform the streaking operation, thereby improving the convenience of the streaking operation during microbial inoculation.

[0016] Optionally, the anti-detachment component is a counterweight block, which is coaxially fixed on the sleeve and has a diameter larger than the inner diameter of the mounting hole.

[0017] By adopting the above technical solution, in the initial state, the counterweight block rests against the bottom wall of the mounting cavity. When the mounting plate moves the inoculation needle to perform the marking, the inoculation ring and inoculation needle float upward under the squeezing action of the culture medium. The gravity of the counterweight block moves downward along the axis of the inoculation needle, causing the inoculation needle to move downward, thereby maintaining the balance of the inoculation needle and enabling the inoculation ring to rest against the surface of the culture medium for marking.

[0018] Optionally, the metal part is a plug connected above the connecting sleeve, and the plug is used to cover the upper end of the mounting cavity.

[0019] By adopting the above technical solution, the plug blocks the mounting cavity and also serves as a metal part to connect the magnet, thereby achieving the connection between the mounting plate and the inoculation needle.

[0020] Optionally, the upper end of the connecting sleeve has an annular groove, and the plug is sleeve-shaped with a retaining ring at the lower end that engages with the annular groove.

[0021] By adopting the above technical solution, during installation, the connecting sleeve and the plug can be connected by simply snapping the retaining ring on the plug into the annular groove, thereby improving the convenience of connection.

[0022] Optionally, the base has multiple placement holes for placing inoculation needles, the inner diameter of the placement holes being the same as the outer diameter of the connecting sleeve, and the outer diameter of the plug being larger than the outer diameter of the connecting sleeve.

[0023] By adopting the above technical solution, before use, multiple inoculation needles and connecting sleeves are placed in the corresponding placement holes. The outer surface of the connecting sleeve abuts against the inner wall of the placement hole, and the lower surface of the plug abuts against the upper surface of the base, thereby limiting the inoculation needles. During use, the three-axis drive module drives the mounting plate to make the magnet attract the plug. The movement of the mounting plate can drive the connecting sleeve and inoculation needle to detach from the placement hole as a whole. After use, the mounting plate drives the connecting sleeve and inoculation needle back into the placement hole. Then the mounting plate moves horizontally, thereby driving the magnet away from the plug. Under the limitation of the connecting sleeve and the placement hole, the plug will remain on the connecting sleeve and will not detach from the placement hole, thus realizing the connection and disassembly of the inoculation needles. Repeated operation can realize the streaking operation of multiple plates without manual operation, thereby improving the overall mechanization of microbial streaking operation and thus improving the convenience of streaking operation.

[0024] Optionally, the intersection of the upper surface of the base and the inner surface of the placement hole has a guide surface that slopes downward and inward.

[0025] By adopting the above technical solution, the guide surface improves the ease of placing and removing the inoculation needle.

[0026] Optionally, the base has multiple cutouts, which are located below and communicate with the placement hole, and the inoculation ring on the inoculation needle located in the placement hole is located within the cutouts.

[0027] By adopting the above technical solution, ultraviolet irradiation of the hollowed-out area can sterilize the inoculation ring, thereby improving the convenience of sterilizing the inoculation ring.

[0028] Optionally, a metal sensor is provided on the base.

[0029] By adopting the above technical solution, after the inoculation needle is removed from the base, the mounting plate passes through the detection element of the metal sensor. The detection element of the metal sensor detects the inoculation ring to determine whether the mounting plate has successfully removed the inoculation needle, thereby improving the marking efficiency.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. Before streaking, the inoculation needle is located on the base. The three-axis drive module drives the inoculation needle to detach from the base through the connecting component. Under the action of the three-axis drive module, the inoculation needle moves along the X-axis, Y-axis and Z-axis to achieve sampling and streaking. After streaking is completed, the three-axis drive module drives the inoculation needle back to the base, thus completing the mechanized microbial inoculation streaking operation. There is no need for manual installation and removal of the inoculation needle, which improves the convenience of the streaking operation.

[0032] 2. During use, the three-axis drive module drives the mounting plate to attract the magnet to the plug. Moving the mounting plate causes the connecting sleeve and inoculation needle to detach from the placement hole. After use, the mounting plate moves the connecting sleeve and inoculation needle back into the placement hole. Then, the mounting plate moves horizontally, causing the magnet to move away from the plug. Under the limit of the connecting sleeve and the placement hole, the plug will remain on the connecting sleeve and will not detach from the placement hole, thus realizing the connection and disassembly of the inoculation needle. Repeated operation can realize the streaking operation of multiple plates without manual operation, thereby improving the overall mechanization of microbial streaking operation. The mounting plate and the inoculation needle are connected by magnetic attraction, which improves the convenience of picking up and putting down the inoculation needle, thereby improving the convenience of streaking operation.

[0033] 3. The hollow design of the base improves the convenience of UV sterilization.

[0034] 4. The inoculation loop is detected by the detection element of the metal sensor to determine whether the inoculation needle has been successfully removed from the mounting plate, thereby improving the scribing efficiency. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of this application;

[0036] Figure 2 This is a schematic diagram of the overall structure of the connecting components in this application;

[0037] Figure 3 This is a cross-sectional view of the connecting sleeve and the plug in this application;

[0038] Figure 4 This is an exploded view of the magnet, plug, and connecting sleeve in this application;

[0039] Figure 5 This is a structural schematic diagram of the base in this application;

[0040] Figure 6 This is a schematic diagram of the location of the guide surface in this application, in which the base and the plug are partially sectioned.

[0041] Reference numerals: 1. Base; 11. Placement hole; 12. Guide surface; 13. Hollowed-out; 14. Threaded hole; 15. Metal sensor; 2. Inoculation needle; 21. Inoculation ring; 22. Sleeve; 3. Three-axis drive module; 31. Z-axis drive component; 32. Y-axis drive component; 33. X-axis drive component; 4. Connecting assembly; 41. Mounting plate; 42. Magnet component; 43. Connecting sleeve; 431. Connecting tube; 432. Annular groove; 44. Mounting cavity; 441. Mounting hole; 45. Counterweight; 46. Plug; 461. Positioning groove; 462. Snap ring. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0043] This application discloses a line marking mechanism.

[0044] Reference Figure 1 A marking mechanism includes a base 1, an inoculation needle 2 placed on the base 1, and a three-axis drive module 3 for driving the inoculation needle 2 to move. The three-axis drive module 3 is connected to the inoculation needle 2 through a connecting component 4 and is used to drive the inoculation needle 2 to move along the X-axis, Y-axis and Z-axis directions.

[0045] Reference Figure 1 and Figure 2 The inoculation needle 2 extends vertically and has an inoculation ring 21 at its lower end. Both the inoculation needle 2 and the inoculation ring 21 are made of metal. The connecting component 4 includes a mounting plate 41, a magnet 42, and a connecting sleeve 43.

[0046] Reference Figure 1 and Figure 2 The mounting plate 41 extends vertically and its top end is connected to the three-axis drive module 3. The magnet 42 is fixed at the bottom end of the mounting plate 41. In this embodiment, the magnet 42 is an electromagnet. The connecting sleeve 43 is coaxially located at the top end of the inoculation needle 2. The connecting sleeve 43 is provided with a metal part for adsorption connection with the magnet 42.

[0047] Reference Figure 2 and Figure 3 The top end of the inoculation needle 2 is coaxially fitted with a sleeve 22. The connecting sleeve 43 has an installation cavity 44. The bottom wall of the installation cavity 44 has a vertically extending installation hole 441 that penetrates the lower surface of the connecting sleeve 43. The sleeve 22 is slidably fitted in the installation hole 441 and extends into the installation cavity 44. The installation cavity 44 is provided with an anti-detachment component to prevent the inoculation needle 2 from falling downward.

[0048] Reference Figure 2 , Figure 3 and Figure 4 The anti-detachment component is a counterweight 45, which is coaxially fixed on the sleeve 22 and has a diameter larger than the inner diameter of the mounting hole 441; the metal component is a plug 46 connected above the connecting sleeve 43, which is used to block the upper end of the mounting cavity 44.

[0049] Reference Figure 2 , Figure 3 and Figure 4 The upper end of the connecting sleeve 43 is coaxially fixed with a vertically upward extending connecting pipe 431. The connecting pipe 431 communicates with the mounting cavity 44. The distance between the counterweight 45 and the top end of the sleeve 22 is less than the sum of the heights of the mounting cavity 44 and the connecting pipe 431. The lower end of the connecting pipe 431 has an annular groove 432. The plug 46 is cylindrical and has a positioning groove 461 on the inner wall of its lower end. At the same time, the lower end of the plug 46 also has a retaining ring 462 that can be inserted into the annular groove 432. During installation, the retaining ring 462 of the plug 46 is inserted into the annular groove 432, so that the outer wall of the connecting pipe 431 abuts against the positioning groove 461, and the retaining ring 462 abuts against the annular groove 432.

[0050] Reference Figure 2 , Figure 5 and Figure 6 The base 1 has multiple placement holes 11 for placing inoculation needles 2. The inner diameter of the placement hole 11 is the same as the outer diameter of the connecting sleeve 43. The outer diameter of the plug 46 is larger than the outer diameter of the connecting sleeve 43. The intersection of the upper surface of the base 1 and the inner surface of the placement hole 11 has a downward and inward inclined guide surface 12. When the inoculation needle 2 is not removed, the connecting sleeve 43 abuts against the inner wall of the placement hole 11, the connecting tube 431 is located above the placement hole 11, the plug 46 is located above the guide surface 12 and the lower surface of the plug 46 abuts against the upper surface of the base 1.

[0051] Reference Figure 2 , Figure 5 and Figure 6 The base 1 also has multiple cutouts 13, which are located below and connected to the placement hole 11. The inoculation ring 21 on the inoculation needle 2 located in the placement hole 11 is located in the cutout 13. The inoculation needle 2 and the inoculation ring 21 can be sterilized by irradiating the cutout 13 with ultraviolet light.

[0052] Reference Figure 1 and Figure 5 Multiple bases 1 can be set as needed. Each base 1 has a threaded hole 14 for connecting to the sterile table. The base 1 can be installed onto the sterile table by bolts.

[0053] Reference Figure 1 , Figure 2 and Figure 5The base 1 is also equipped with a metal sensor 15, which is an inductive proximity sensor in the prior art. It mainly consists of high-frequency oscillation, detection, amplification, triggering and output circuits. The sensor's detection surface generates an alternating electromagnetic field. When a metal object approaches the sensor's detection surface, eddy currents are generated in the metal, absorbing the energy of the oscillator and causing the oscillation to weaken and stop. The two states of oscillation and cessation of oscillation are converted into electrical signals, shaped and amplified, and then converted into binary switching signals, which are output after power amplification.

[0054] Reference Figure 1 , Figure 2 and Figure 5 In this embodiment, the upper surface of the metal sensor 15 is the detection surface. When the mounting plate 41 moves the inoculation needle 2 out of the placement hole 11 and moves to the upper surface of the metal sensor 15, the mounting plate 41 determines whether the inoculation needle 2 has been successfully removed by the signal data transmitted by the sensor.

[0055] Reference Figure 1 and Figure 2 The three-axis drive module 3 includes a Z-axis drive 31, a Y-axis drive 32, and an X-axis drive 33. The mounting plate 41 is connected to the Z-axis drive 31. The Z-axis drive 31 is used to drive the mounting plate 41 to move vertically out or back to the base 1 along the Z-axis direction. The Y-axis drive 32 is connected to the Z-axis drive 31 and is used to drive the mounting plate 41 and the Z-axis drive 31 to move horizontally along the Y-axis direction. The X-axis drive 33 is connected to the Y-axis drive 32 and is used to drive the mounting plate 41, the Y-axis drive 32, and the Z-axis drive 31 to move horizontally along the X-axis.

[0056] The Z-axis drive unit 31, Y-axis drive unit 32, and X-axis drive unit 33 differ only in their installation direction; their basic components are identical. The following description will only use the Z-axis drive unit 31 as an example. The Z-axis drive unit 31 includes a slide rail, a mounting block, and a motor. The slide rail extends horizontally along the Z-axis direction, and the mounting block slides on the slide rail along its extension direction. The motor drives the mounting block to slide. The way the motor drives the mounting block to slide can be by lead screw transmission or gear and screw transmission, etc., which will not be elaborated here. The mounting block located on the Z-axis is fixedly connected to the top of the mounting plate 41, the mounting block located on the Y-axis is connected to the slide rail on the Z-axis, and the mounting block located on the X-axis is connected to the slide rail on the Y-axis.

[0057] Since the three-directional drive device is existing technology, it is only briefly described here. For the specific structure, please refer to the authorized utility model patent (authorization announcement number CN204981874U, patent name "a marking mechanism").

[0058] Reference Figure 1 , Figure 2 and Figure 5Before use, place multiple inoculation needles 2 and connecting sleeves 43 into the corresponding placement holes 11. The outer surface of the connecting sleeve 43 abuts against the inner wall of the placement hole 11, and the lower surface of the plug 46 abuts against the upper surface of the base 1 to limit the inoculation needles 2. When in use, start the electromagnet, and the three-axis drive module 3 drives the mounting plate 41 to move, so that the magnet 42 is attracted to the plug 46. The movement of the mounting plate 41 can drive the connecting sleeve 43 and the inoculation needles 2 to detach from the placement hole 11 as a whole. After the inoculation needles 2 are removed, the three-axis drive module 3 drives the inoculation needles 2 to move above the detection surface of the metal sensor 15. The metal sensor 15 detects whether the mounting plate 41 has successfully removed the inoculation needles 2.

[0059] Reference Figure 1 , Figure 2 and Figure 3 After successful needle retrieval, the triaxial drive module 3 drives the inoculation needle 2 to move, thereby driving the inoculation loop 21 to perform sampling, streaking and other operations. During the streaking operation, the mounting plate 41 drives the inoculation loop 21 to contact the culture medium surface. Under the pressure of the culture medium, the inoculation loop 21 and the inoculation needle 2 float upward. The gravity of the counterweight block 45 moves downward along the axis of the inoculation needle 2, causing the inoculation needle 2 to move downward, thereby maintaining the balance of the inoculation needle 2 and enabling the inoculation loop 21 to press against the culture medium surface to perform the streaking operation.

[0060] Reference Figure 1 , Figure 2 and Figure 5 After the streaking operation is completed, the three-axis drive module 3 drives the mounting plate 41 to move the connecting sleeve 43 and the inoculation needle 2 back into the placement hole 11. At this time, the power supply of the electromagnet is disconnected, and then the mounting plate 41 moves horizontally, thereby moving the magnet 42 away from the plug 46. Under the limit of the connecting sleeve 43 and the placement hole 11, the plug 46 will remain on the connecting sleeve 43 and will not detach from the placement hole 11, thus realizing the connection and disassembly of the inoculation needle 2. Repeated operation can realize the streaking operation of multiple plates without manual operation, thereby improving the overall mechanization of the microbial streaking operation and thus improving the convenience of the streaking operation.

[0061] Reference Figure 1 , Figure 2 and Figure 5 After all inoculation is completed, the inoculation ring 21 can be uniformly sterilized by irradiating the hollow 13 points of the base 1 with ultraviolet light, thereby improving the convenience of ultraviolet sterilization.

[0062] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A marking mechanism, characterized in that: It includes a base (1), an inoculation needle (2) placed on the base (1), and a three-axis drive module (3) for driving the inoculation needle (2) to move. The three-axis drive module (3) is connected to the inoculation needle (2) through a connecting component (4) and is used to drive the inoculation needle (2) to move along the X-axis, Y-axis and Z-axis directions.

2. The marking mechanism according to claim 1, characterized in that: The inoculation needle (2) extends vertically and has an inoculation ring (21) at its lower end. The connecting assembly (4) includes: Mounting plate (41), which extends vertically and whose top end is connected to the three-axis drive module (3); A magnet (42) is disposed at the bottom end of the mounting plate (41); A connecting sleeve (43) is coaxially disposed at the top end of the inoculation needle (2). A metal part is provided on the connecting sleeve (43), which is used to be attracted and connected to the magnet (42).

3. The marking mechanism according to claim 2, characterized in that: The inoculation needle (2) is coaxially fitted with a sleeve (22) at its top end. The connecting sleeve (43) has an installation cavity (44). The bottom wall of the installation cavity (44) has a vertically extending installation hole (441) that penetrates the lower surface of the connecting sleeve (43). The sleeve (22) is slidably fitted in the installation hole (441) and extends into the installation cavity (44). The installation cavity (44) is provided with an anti-detachment component to prevent the inoculation needle (2) from falling downward.

4. A marking mechanism according to claim 3, characterized in that: The anti-detachment component is a counterweight (45), which is coaxially fixed on the sleeve (22) and has a diameter larger than the inner diameter of the mounting hole (441).

5. A marking mechanism according to claim 3, characterized in that: The metal part is a plug (46) connected above the connecting sleeve (43), and the plug (46) is used to cover the upper end of the mounting cavity (44).

6. A marking mechanism according to claim 5, characterized in that: The upper end of the connecting sleeve (43) has an annular groove (432), and the plug (46) is sleeve-shaped and has a retaining ring (462) at the lower end that can be inserted into the annular groove (432).

7. A marking mechanism according to claim 6, characterized in that: The base (1) has multiple placement holes (11) for placing inoculation needles (2). The inner diameter of the placement hole (11) is the same as the outer diameter of the connecting sleeve (43), and the outer diameter of the plug (46) is larger than the outer diameter of the connecting sleeve (43).

8. A marking mechanism according to claim 7, characterized in that: The intersection of the upper surface of the base (1) and the inner surface of the placement hole (11) has a guide surface (12) that slopes downward and inward.

9. A marking mechanism according to claim 6, characterized in that: The base (1) has multiple cutouts (13), which are located below and connected to the placement hole (11). The inoculation ring (21) on the inoculation needle (2) located in the placement hole (11) is located in the cutout (13).

10. A marking mechanism according to claim 6, characterized in that: A metal sensor (15) is provided on the base (1).

Images