Gel Automatic Preparation Device

Abstract

The present invention provides an automatic gel preparation device, belonging to the field of gel production, which includes a fixing frame, reagent bottles, a gel tray and a film output component. At least one injection needle is provided on the fixing frame for sucking the liquid in the reagent bottle and injecting it into the gel tray; the film output component is fixed on the fixing frame to supply reagent tablets for gel preparation into the gel tray; the gel tray moves relative to the fixing frame to correspond to the injection needle and the film output component, and complete the liquid mixing in the gel tray; a solution bottle for supplying solution to the gel tray is also provided on the fixing frame; a heating component is provided below the gel tray. The structure of the present invention is compact, occupies a small space, and has a simple process flow, improving the gel preparation efficiency. At the same time, all operations in the gel preparation process are completed within the device, further reducing the contact between personnel and toxic reagents and enhancing safety.

Description

Technical Field

[0001] The present invention belongs to the field of gel production and relates to an automatic gel preparation device. Background Art

[0002] Agarose nucleic acid gel electrophoresis is a commonly used technique for separating, identifying, and purifying nucleic acid molecules. It is an indispensable and important analytical method in nucleic acid research work and is widely used in many fields such as basic theoretical research, agricultural science, medical and health, industrial production, national defense research, forensic medicine, and commodity inspection. It plays an important role in the teaching and research of biochemistry and molecular biology.

[0003] Agarose nucleic acid gel electrophoresis can make negatively charged nucleic acid molecules migrate towards the positive electrode during electrophoresis. During the electrophoresis process, agarose gel is required as an electrophoresis support medium to play the role of a molecular sieve, so that there are significant differences in the migration rates of nucleic acid molecules with different sizes and conformations, thus achieving the purpose of separation. Therefore, the quality of agarose gel determines the successful progress of the entire gel electrophoresis experiment and is the basis of nucleic acid research.

[0004] The basic procedures for traditional agarose gel preparation mainly include: selecting a good mold, preparing the gel solution, melting the gel, adding a nucleic acid stain, pouring the gel, and standing for solidification. Although the principle and method of production are simple, there are still some problems in its operation process that need to be overcome and solved: (1) The nucleic acid stain added during the operation process is somewhat toxic. Long-term exposure of experimental personnel to nucleic acid dyes has a high risk of cancer, seriously affecting the health of experimental personnel and polluting the environment; (2) Due to subjective factors of humans in aspects such as the amount of gel powder added, the amount of liquid, and temperature control in the actual process, there is a lack of standardization, which also leads to differences in experimental electrophoresis images and affects data analysis; (3) The entire production process is manually operated, which is time-consuming and laborious, and human errors often affect the overall progress of the experiment.

[0005] Previously, our company applied for a device for automatic gel preparation. The solution is added to a gel bottle, the gel bottle is fixedly arranged in a clamping frame, the clamping frame is fixedly arranged on a rotating motor, and is arranged on a moving frame and is slidably connected up and down relative to the moving frame. On one side of the moving frame away from the rotating motor, there is a lifting motor. The lifting motor drives the rotating motor and the moving frame to slide up and down through a lead screw and nut mechanism. The lower end of the lifting frame is slidably connected left and right through a connecting plate to a support column. On one side of the support column, there is a moving motor. The moving motor drives the connecting plate to move through a lead screw and nut structure. The gel bottle is moved to a heating plate through this set of devices. After heating is completed, it is moved above a gel tray through the above devices to complete the pouring of the gel, and the automatic preparation of the gel can be realized. However, the structure is relatively complex and the manufacturing cost is relatively high. Summary of the Invention

[0006] The problem to be solved by the present invention is to provide an automatic gel preparation device, which has a compact structure, occupies a small space, and has a simple process flow, improving the gel preparation efficiency. At the same time, all operations in the gel preparation process are completed within the device, further reducing the contact between personnel and toxic reagents and enhancing safety.

[0007] To solve the above technical problems, the technical solution adopted by the present invention is: The automatic gel preparation device includes a fixing frame, reagent bottles, a gel tray, and a film output component. At least one injection needle is provided on the fixing frame for sucking the liquid in the reagent bottle and injecting it into the gel tray.

[0008] The film output component is fixed on the fixing frame and provides reagent films for gel preparation into the gel tray.

[0009] The gel tray moves relative to the fixing frame to correspond to the injection needle and the film output component and complete the liquid mixing in the gel tray.

[0010] A solution bottle for supplying solution to the gel tray is further provided on the fixing frame.

[0011] A heating component is provided below the gel tray.

[0012] Further, the gel tray moves relative to the fixing frame in the X-axis direction through a horizontal motor module. The height of the lower end surface of the gel tray is higher than the upper end surface of the lower limit position of the reagent bottle. The gel tray moves relative to the fixing frame in the Y-axis direction through a vertical motor module.

[0013] Further, the horizontal motor module includes a horizontal motor and a horizontal slider. The horizontal motor drives the horizontal slider to move in the X-axis through a lead screw and nut structure. The vertical motor module is arranged above the horizontal slider. The vertical motor module includes a vertical motor and a vertical slider. The vertical motor drives the vertical slider to move in the Y-axis direction through a lead screw and nut structure. The gel tray is arranged at the upper end of the vertical slider.

[0014] Further, the number of the horizontal sliders is two and they are arranged in parallel. A matching lead screw is provided below the horizontal slider far from the horizontal motor. The two horizontal sliders are symmetrically and dispersedly arranged at both ends of the vertical motor module.

[0015] Further, the reagent bottle moves up and down relative to the fixing frame through a lifting module. The lifting module is fixed on the fixing frame and includes a lifting motor, a lifting slider, and a lifting plate. The lifting motor drives the lifting slider to move through a lead screw and nut structure. The lifting plate is fixedly connected to the lifting slider. The lifting plate is horizontally arranged, and a positioning cylinder is provided above one end away from the lifting slider. The reagent bottle is arranged in the positioning cylinder, and the reagent bottle and the positioning cylinder are fixed through a magnetic attraction structure.

[0016] Further, the solution bottle provides a gel solution for the gel tray through a solution pipe. A pump for conveying liquid is provided on the solution pipe. The solution pipe is fixed on the fixing frame, and the lower end of the solution pipe is arranged parallel to the injection needle.

[0017] Further, the injection needle is arranged on a support frame. The support frame is fixed on the fixing frame. The barrel part of the injection needle is arranged at the lower end of the support frame through a T-shaped groove structure. A driving motor is provided at the upper end of the support frame. The output shaft of the driving motor is arranged vertically downward. A driving block is provided at the lower end of the output shaft of the driving motor. The piston of the injection needle is arranged on the driving block through a T-shaped groove structure.

[0018] Further, the sheet discharging assembly includes a housing, and a reagent sheet turntable, a stepping motor, a servo motor, and a sliding plate arranged in the housing. The stepping motor drives the reagent sheet turntable to rotate. A plurality of sheet discharging holes are provided on the reagent sheet turntable. The servo motor drives the sliding plate to move through a crank and connecting rod structure. An outlet is provided on the sliding plate. In the sheet discharging state, the sheet discharging holes are correspondingly arranged with the outlet.

[0019] Further, the upper end of the output shaft of the servo motor is connected to one end of a crank. The other end of the crank is hinged to one end of the connecting rod. The other end of the connecting rod is hinged to one end of the sliding plate. A slideway is provided at the lower end of the outlet. The slideway is arranged obliquely downward, and a baffle is provided at the upper end of the slideway.

[0020] Further, the housing is cylindrical. A control panel is provided on the outer part of the housing. A photoelectric switch for counting the dropped reagent sheets is provided on the baffle.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are as follows.

[0022] 1. In the present invention, the solution is directly added to the gel tray, and at the same time, through the heating element below the gel tray, the addition of the gel is directly completed. Compared with the original device, structures such as the gel bottle, clamping rack, rotating motor, lifting motor, connecting plate, and support column are removed. The cost of the device will be reduced by 10% - 15%. There is no need to move the gel bottle up and down and left and right to complete heating and liquid addition, reducing the device volume by 5% - 10%, and saving the packaging and transportation costs of the device by 5% - 10%. The present application is more economical and efficient, with functions combined, reducing costs and improving efficiency;

[0023] 2. The original equipment does not have the function of automatically adding reagent tablets, and the agar powder used for gel preparation still needs to be added manually. The existing device designs a tablet output component to output the corresponding number of gel tablets according to the amount of gel. Compared with manual operation, the gel preparation efficiency is improved, and all operations during the gel preparation process are completed within the device, further reducing the contact between personnel and toxic reagents;

[0024] 3. The movement of the gel tray in the X-axis and Y-axis directions ensures that it moves to different positions to receive different liquids and reagent tablets, facilitating the preparation of the gel. The horizontal motor module and the vertical motor module can directly adopt the existing module structures on the market, with lower costs and higher precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0026] Figure 1 is a schematic top view structure diagram of the gel automatic preparation device of the present invention;

[0027] Figure 2 is the present invention Figure 1 detail drawing of part A;

[0028] Figure 3 is a schematic side view structure diagram of the gel automatic preparation device of the present invention;

[0029] Figure 4 is a schematic rear view structure diagram of the gel automatic preparation device of the present invention;

[0030] Figure 5 is the present invention Figure 4 detail drawing of part B;

[0031] Figure 6 is a schematic structure diagram of the tablet output component of the present invention;

[0032] Figure 7 is a schematic bottom view structure diagram of the tablet output component without the housing of the present invention;

[0033] Figure 8It is a schematic top view structure diagram of the film output component of the present invention without a housing;

[0034] Figure 9 It is a working flow chart of the film output component of the present invention.

[0035] Reference numerals:

[0036] 1, fixing frame; 2, reagent bottle; 21, positioning cylinder; 22, lifting plate; 23, lifting slider; 24, lifting motor; 3, gel tray; 4, injection needle; 41, support frame; 42, drive motor; 43, drive block; 5, film output component; 51, housing; 52, reagent film turntable; 521, film output hole; 53, stepping motor; 54, servo motor; 541, crank; 542, connecting rod; 543, sliding plate; 545, output hole; 55, baffle; 56, slideway; 58, photoelectric switch; 6, horizontal motor module; 61, horizontal motor; 62, horizontal slider; 7, vertical motor module; 71, vertical motor; 72, vertical slider; 8, solution pipe; 81, solution bottle; 82, pump. Detailed implementation manners

[0037] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is 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 thus cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more, and in this application, a standard Cartesian coordinate system is adopted.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings.

[0041] As Figures 1 to 9 shown, the present invention is a gel automatic preparation device, which includes a fixing frame 1, a reagent bottle 2, a gel tray 3, and a sheet output assembly 5. At least one injection needle 4 is provided on the fixing frame 1 for sucking the liquid in the reagent bottle 2 and injecting it into the gel tray 3.

[0042] The sheet output assembly 5 is fixed on the fixing frame 1 to supply reagent sheets for gel preparation into the gel tray 3.

[0043] The gel tray 3 moves relative to the fixing frame 1 to correspond to the injection needle 4, the sheet output assembly 5, and the water outlet of the solution tube 8, and complete the mixing of the liquid in the gel tray 3.

[0044] A solution bottle 81 for supplying solution to the gel tray 3 is further provided on the fixing frame 1.

[0045] A heating component is provided below the gel tray 3 to heat the mixed liquid to ensure the temperature required for the gel. The heating component can be a heating rod or a heating sheet. The heating rod or the heating sheet occupies a small space and can be made integral with the gel tray and embedded at the lower end inside the gel tray. An energized heating structure can be adopted, and other equivalent structures that can achieve heating can also implement the technical solution of this application.

[0046] Preferably, the gel tray 3 moves relative to the fixed frame 1 in the X-axis direction through the transverse motor module 6. The height of the lower end face of the gel tray 3 is higher than the upper end face of the lower limit position of the reagent bottle 2. The gel tray 3 moves relative to the fixed frame 1 in the Y-axis direction through the longitudinal motor module 7. Preferably, the transverse motor module 6 includes a transverse motor 61 and a transverse slider 62. The transverse motor 61 drives the transverse slider 62 to move in the X-axis through a lead screw and nut structure. The longitudinal motor module 7 is arranged above the transverse slider 62. The longitudinal motor module 7 includes a longitudinal motor 71 and a longitudinal slider 72. The longitudinal motor 71 drives the longitudinal slider 72 to move in the Y-axis direction through a lead screw and nut structure. The gel tray 3 is arranged at the upper end of the longitudinal slider 72. The movement of the gel tray 3 in the X-axis and Y-axis directions ensures that it moves to different positions to receive different liquids and reagent tablets, facilitating the preparation of the gel. The transverse motor module 6 and the longitudinal motor module 7 can directly adopt existing module structures on the market, with lower costs, and the specifications and accuracies can be selected according to actual situations.

[0047] Preferably, the number of the transverse sliders 62 is two and they are arranged in parallel. A lead screw is arranged below the transverse slider 62 far from the transverse motor 61. The two transverse sliders 62 are symmetrically and dispersedly arranged at both ends of the longitudinal motor module 7. This can ensure the stability of the movement of the longitudinal motor module 7, prevent vibration, and easily ensure gel mixing.

[0048] Preferably, the reagent bottle 2 moves up and down relative to the fixed frame 1 through the lifting module. The lifting module is fixed on the fixed frame 1. The lifting module includes a lifting motor 24, a lifting slider 23, and a lifting plate 22. The lifting motor 24 drives the lifting slider 23 to move through a lead screw and nut structure. The lifting plate 22 is fixedly connected to the lifting slider 23. The lifting plate 22 is horizontally arranged and a positioning cylinder 21 is arranged above one end far from the lifting slider 23. The reagent bottle 2 is arranged in the positioning cylinder 21. The reagent bottle and the positioning cylinder are fixed through a magnetic attraction structure. The magnetic attraction structure can be a magnet block. The magnet block can be arranged at the bottom of the reagent bottle 2 or embedded inside the positioning cylinder. When placing, the two are adsorbed and fixed through the magnet block. The structure is simple, stable and reliable. During actual application, the lifting motor 24 operates to drive the lifting slider 23 to move up and down, thereby driving the lifting plate 22 to move up and down, and further driving the positioning cylinder 21 on the lifting plate 22 to move up and down, facilitating upward alignment with the injection needle 4 and facilitating the injection needle 4 to suck the liquid. After the liquid suction is completed, it descends to the lowest end to facilitate the movement of the gel tray 3 and avoid interference with the positioning cylinder 21. Then the injection needle 4 injects the liquid onto the gel tray 3. At the same time, the gel tray 3 receives the liquid injected by the solution tube 8.

[0049] Preferably, the solution bottle 81 supplies the gel solution to the gel tray 3 through the solution tube 8. A pump 82 for conveying liquid is provided on the solution tube 8. The solution tube 8 is fixed on the fixing frame 1. The lower end of the solution tube 8 is arranged in parallel with the injection needle 4. The liquid in the solution bottle 81 is a liquid with a large consumption during the gel preparation process. The form of the pump 82 is used for transmission to ensure the supply of quantity and meet the requirement of mixing multiple liquids.

[0050] Preferably, the injection needle 4 is arranged on the support frame 41. The support frame 41 is fixed on the fixing frame 1. The barrel part of the injection needle 4 is arranged at the lower end of the support frame 41 through a T-shaped groove structure. A driving motor 42 is provided at the upper end of the support frame 41. The output shaft of the driving motor 42 is arranged vertically downward. A driving block 43 is provided at the lower end of the output shaft of the driving motor 42. The driving motor 42 drives the driving block 43 to move up and down through a lead screw and nut structure. The piston of the injection needle 4 is arranged on the driving block 43 through a T-shaped groove structure. The T-shaped groove structure facilitates connection and fixation. After the driving motor 42 drives the driving block 43 to move up and down through the lead screw and nut structure, the following structure can also be adopted. The driving motor 42 adopts a micro cylinder or an oil cylinder. In this structure, an electric push rod can also be used to replace the micro cylinder, or other equivalent structures can also be used, realizing the quantitative addition of trace liquid.

[0051] Preferably, the film output component 5 includes a housing 51, and a reagent film turntable 52, a stepping motor 53, a servo motor 54 and a slide plate 543 arranged inside the housing 51. The stepping motor 53 drives the reagent film turntable 52 to rotate. A plurality of film output holes 521 are provided on the reagent film turntable 52. The servo motor 54 drives the slide plate 543 to move through a crank 541 - connecting rod 542 structure. An outlet is provided on the slide plate 543. In the film output state, the film output holes 521 are correspondingly arranged with the outlet. More preferably, the upper end of the output shaft of the servo motor 54 is connected to one end of the crank 541. The other end of the crank 541 is hinged to one end of the connecting rod 542. The other end of the connecting rod 542 is hinged to one end of the slide plate 543. That is, the crank 541 is respectively rotationally connected to the servo motor 54 shaft and the connecting rod 542, the connecting rod 542 is respectively rotationally connected to the crank 541 and the slide plate 543, and the slide plate 543 is linearly connected to the machine body, realizing the conversion of the rotation of the servo motor 54 into its own linear motion. The slide plate 543 can block the film output holes 521 and is driven by the internal servo motor 54 to automatically close the film output holes 521 when there is no need for film output, preventing the reagent films from falling due to external vibration. A slideway 56 is provided at the lower end of the outlet. The slideway 56 is inclined downward. A baffle 55 is provided at the upper end of the slideway 56. A photoelectric switch 58 is provided horizontally at the upper end of the baffle. During the process of the reagent film falling, it passes through the photoelectric switch to count the fallen reagent films. More preferably, the housing 51 is cylindrical. During the actual working process, the reagent film turntable 52 is used to hold the reagent films and is driven by the internal stepping motor 53. It can rotate a certain angle according to the input quantity to achieve the purpose of outputting the specified number of films. The stepping motor 53 drives the reagent film turntable 52 to rotate. Through pulse control, it can achieve rotation at a fixed angle. The rotating shaft of the servo motor 54 converts the angular rotation of the servo motor 54 into the linear motion of the slide plate 543 through a crank - connecting rod mechanism, thereby realizing the control of the linear motion of the slide plate 543 and finally achieving the purpose of blocking or opening the film output holes 521. At the same time, the photoelectric switch 58 is placed directly below the film output holes 521 to stably count the number of films output, realizing the closed - loop control of the entire system.

[0052] During the operation of the entire structure, the driving motor 42 controls the injection needle 4 to suck the liquid in the reagent bottle 2. After the sucking is completed, it is standby. Taking the gel preparation in one area of the gel tray 3 as an example according to the gel preparation specifications, the horizontal motor module 6 and the vertical motor module 7 move the gel tray 3 under the sheet output component 5, and the gel sheet is output into the gel tray 3 through the sheet output component 5. Then, the horizontal motor module 6 and the vertical motor module 7 move the vegetation area of the gel tray 3 under the solution tube 8, and the liquid in the solution bottle 81 is added to the gel tray 3 through the pump 82 and the solution tube 8. A heating component is installed under the gel tray 3, and the heating component starts to heat. When the temperature rises to 80-150 degrees, the heating stops. The horizontal motor module 6 and the vertical motor module 7 move the preparation area of the gel tray 3 under the injection needle 4, and the injection needle 4 sucks the liquid in the reagent bottle 2 and drops it into the preparation area of the gel tray 3. The vertical motor module 7 realizes the mixing of the reagent through movement. After the gel solidifies, the gel tray is pushed out by the vertical motor module 7, and the entire gel process is completed automatically.

[0053] The above has described an embodiment of the present invention in detail, but the content described is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. Gel automatic preparation device, characterized in that: It includes a fixing frame, a reagent bottle, a gel tray and a film output assembly. The fixing frame is provided with at least one injection needle for sucking the liquid in the reagent bottle and then injecting it into the gel tray; The sheet discharging assembly is fixed on the fixed frame and provides a reagent sheet for gel preparation into the gel tray. The sheet discharging assembly includes a shell, and a reagent sheet turntable, a stepping motor, a servo and a slide plate arranged in the shell. The stepping motor drives the reagent sheet turntable to rotate, and the reagent sheet turntable is provided with a plurality of sheet discharging holes. The servo drives the slide plate to move through a crank-connecting rod structure. The slide plate is provided with an outlet. In the sheet discharging state, the sheet discharging holes are arranged corresponding to the outlet. The upper end of the output shaft of the servo is connected to one end of the crank, and the other end of the crank is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to one end of the slide plate. A slide is provided at the lower end of the outlet, and the slide is inclined downward. A baffle is provided at the upper end of the slide. The shell is cylindrical, and a control panel is provided on the outside of the shell, and a photoelectric switch for counting dropped reagent sheets is provided on the baffle. The gel tray moves relative to the fixed frame to correspond to the injection needle and the film discharge assembly and complete the mixing of the liquid in the gel tray. The gel tray moves relative to the fixed frame in the X-axis direction via a transverse motor module. The height of the lower end surface of the gel tray is higher than the upper end surface of the lower limit position of the reagent bottle. The gel tray moves relative to the fixed frame in the Y-axis direction via a longitudinal motor module. The fixing frame is also provided with a solution bottle for supplying solution to the gel tray; A heating component is provided below the gel tray.

2. The gel automatic preparation device according to claim 1, characterized in that: The transverse motor module includes a transverse motor and a transverse slider. The transverse motor drives the transverse slider to move in the X-axis through a nut-screw structure. The longitudinal motor module is arranged above the transverse slider. The longitudinal motor module includes a longitudinal motor and a longitudinal slider. The longitudinal motor drives the longitudinal slider to move in the Y-axis direction through a nut-screw structure. The gel tray is arranged at the upper end of the longitudinal slider.

3. The gel automatic preparation device according to claim 2, characterized in that: There are two transverse sliders and they are arranged in parallel. A matching screw is provided below the transverse slider away from the transverse motor. The two transverse sliders are symmetrically and dispersedly arranged at both ends of the longitudinal motor module.

4. The gel automatic preparation device according to claim 1, characterized in that: The reagent bottle moves up and down relative to the fixed frame through a lifting module, and the lifting module is fixed on the fixed frame. The lifting module includes a lifting motor, a lifting slider and a lifting plate. The lifting motor drives the lifting slider to move through a nut and screw structure. The lifting plate is fixedly connected to the lifting slider. The lifting plate is horizontally arranged and a positioning cylinder is provided above one end away from the lifting slider. The reagent bottle is arranged in the positioning cylinder, and the reagent bottle and the positioning cylinder are fixed by a magnetic structure.

5. The gel automatic preparation device according to claim 1, characterized in that: The solution bottle provides gel solution to the gel tray through a solution tube. The solution tube is provided with a pump for conveying liquid. The solution tube is fixed on the fixing frame. The lower end of the solution tube is arranged parallel to the injection needle.

6. The gel automatic preparation device according to claim 1, characterized in that: The injection needle is arranged on the support frame, the support frame is fixed on the fixed frame, the barrel part of the injection needle is arranged at the lower end of the support frame through a T-shaped groove structure, a driving motor is arranged at the upper end of the support frame, the output shaft of the driving motor is arranged vertically downward, a driving block is arranged at the lower end of the output shaft of the driving motor, and the piston of the injection needle is arranged on the driving block through a T-shaped groove structure.

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