Coating mechanism

Abstract

The coating mechanism comprises a coating mechanical arm, a material taking device and a coating bar stock bin, the material taking device is arranged at the end of the coating mechanical arm and rotationally connected with the coating mechanical arm, the coating bar stock bin comprises a material frame, and a push-pull block is installed in the material frame in the length direction of the material frame in a sliding mode. An elastic tensioning piece is connected between the bottom end of the push-pull block and the bottom end of the material frame, a plurality of coating rods pressed by the push-pull block are placed in the material frame, a discharging port is formed in the top end of the material frame, and the material taking device is used for taking the coating rods located at the discharging port. According to the coating mechanism, the material taking device can be driven by the mechanical arm to clamp the coating rods from the discharging opening of the material frame, after the coating rods located in the coating rod bin are taken by the material taking device at the discharging opening, the subsequent coating rods can be automatically supplemented to the discharging opening, and after coating is completed, the coating rods can be moved to the discharging frame to be discharged, so that the coating efficiency is improved. And automation of coating treatment is achieved, and the coating efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of food inspection equipment, in particular to a coating mechanism. Background Art

[0002] Food microbiology testing is a key link in ensuring food safety. The national standard method covers a variety of testing technologies to ensure accurate assessment of the microbial content in food. As one of the basic and key technologies, the coating method is widely used in the detection of total microorganisms, specific pathogenic bacteria and indicator bacteria in food. This method evenly distributes the sample to be tested on the surface of the solid culture medium, and then calculates the number of microorganisms in the sample by counting the colonies formed after cultivation.

[0003] The specific process of the spreading method includes but is not limited to the following steps: first, the sample needs to be treated with liquid, and then homogenized by tapping or other methods to ensure that the microorganisms in the sample are evenly distributed; next, an appropriate amount of liquid is taken from the homogenized sample for gradient dilution until a suitable concentration range is reached to facilitate subsequent colony counting; then, the diluted sample is added to the culture dish and evenly spread on the surface of the culture medium using a spreading rod to ensure that the entire surface of the plate is covered; finally, the coated plate is cultured under appropriate conditions, and the colony forming units are observed and calculated to obtain an estimated value of the number of microorganisms.

[0004] Although the coating method plays an important role in microbiological testing, its traditional manual operation has exposed obvious shortcomings. Manual operation is not only inefficient, but also easily introduces human errors in the coating process, resulting in instability and unreliability of test results. In the modern food industry that pursues efficient and accurate testing, this detection method that relies on the operator's skills and experience is obviously unable to meet the needs of industry development. Utility Model Content

[0005] The utility model aims to provide a coating mechanism to realize the automation of sample processing and ensure the accuracy of the coating process.

[0006] The utility model provides a coating mechanism, comprising a coating mechanical arm, a material taker and a coating rod material bin, wherein the material taker is arranged at the end of the coating mechanical arm, and the coating mechanical arm is used to drive the material taker to move in horizontal and vertical directions and drive the material taker to rotate;

[0007] The coating rod silo includes a material rack, a push-pull block is slidably installed inside the material rack along its length direction, an elastic tensioning piece is connected between the bottom end of the push-pull block and the bottom end of the material rack, a plurality of coating rods pressed by the push-pull block are placed inside the material rack, a discharge port is provided at the top of the material rack, and the material picker is used to take the coating rods located at the discharge port.

[0008] Furthermore, a first fixed seat and a second fixed seat are respectively fixedly installed on the front and rear sides of the bottom end of the material rack, two sliding rods parallel to each other are installed between the two fixed seats, the push-pull block is cooperatively installed on the two sliding rods, and a connecting rod is provided on the second fixed seat, one end of the elastic tensioning member is fixed to the bottom end of the push-pull block, and the other end of the elastic tensioning member is fixedly connected to the first fixed seat after passing through the connecting rod.

[0009] Furthermore, the width of the discharge port is not less than the thickness of the coating rod, and the width of the discharge port is less than the sum of the widths of the two coating rods.

[0010] Furthermore, the material extractor includes a sleeve rod and a clamping piece, the clamping piece fixes the end of the sleeve rod, the clamping piece is provided with a spliced ​​clamping groove, and the bottom end of the clamping piece is provided with a guide port connected to the clamping groove.

[0011] Furthermore, the coating robot arm includes a transverse motion mechanism and a longitudinal motion mechanism, the transverse motion mechanism includes a first motor and a chain drive assembly, the output end of the first motor is fixedly connected to a sprocket of the chain drive assembly, a fixed frame is fixedly installed on the chain of the chain drive assembly, and the longitudinal motion mechanism is fixedly installed on the fixed frame; the longitudinal motion mechanism includes a sliding seat, the sliding seat is fixedly installed on the fixed frame, a screw rod is rotatably installed on the sliding seat, a slider cooperating with the screw rod is slidably installed on the sliding seat, a second motor is fixedly installed on the top of the sliding seat, the output shaft of the second motor is fixedly connected to the screw rod, and a coating shaft mechanism for driving the material picker to rotate is installed on the side of the slider.

[0012] Furthermore, the coating shaft mechanism includes a coating shaft and a third motor, the output shaft of the third motor is fixedly connected to the coating shaft, and the sleeve rod is sleeved on the inner side of the coating shaft.

[0013] Furthermore, a through hole is formed on the sleeve rod, a strip hole is formed on the coating shaft, an adjusting rod is installed on the sleeve rod at the through hole, and a spring is installed between the end of the coating shaft and the clamping member.

[0014] Furthermore, it also includes a discharge rack, and an open discharge port is provided on the top of the discharge rack, and the length of the discharge port is smaller than the length of the coating rod.

[0015] Furthermore, the elastic tensioning member is a tension spring or an elastic rope.

[0016] Furthermore, a detection port is provided at the bottom end of the material rack at the position of the material discharge port, and a detection sensor is installed at the detection port.

[0017] The beneficial effect of the technical solution is that the coating mechanism can drive the material picker through the mechanical arm to clamp the coating rod from the discharge port of the material rack. Since the push-pull block in the material rack is subjected to the tension of the elastic tensioning member, after the coating rod at the discharge port is taken out, the next coating rod will move to the discharge port. After the coating is completed, it can be moved to the unloading rack to unload the coating rod. The coating mechanism realizes the automation of the coating process, ensures the accuracy of the coating process, improves the coating efficiency, and reduces the influence of human factors on the test results, so as to meet the requirements of the modern food industry for high efficiency and high precision in food safety testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is the overall assembly structure diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the top structure of the coating rod silo in the utility model;

[0021] Figure 3 This is a schematic diagram of the bottom structure of the coating rod silo in the utility model;

[0022] Figure 4 It is a structural schematic diagram of the material taker in the utility model;

[0023] Figure 5 It is a structural schematic diagram of the discharger in the utility model.

[0024] Explanation of the reference numerals: 1. lateral movement mechanism; 101. first motor; 102. chain drive assembly; 103. fixed frame; 2. longitudinal movement mechanism; 201. sliding seat; 202. second motor; 203. screw rod; 204. slider; 3. coating shaft mechanism; 301. third motor; 302. coating shaft; 4. pipeline insulation chamber; 5. filling head; 6. material rack; 601. detection port; 7. push-pull block; 8. slide bar; 9. elastic tension member; 10. discharge port; 11. magnet; 12. coating rod; 13. material picker; 14. first fixed seat; 15. second fixed seat; 16. connecting rod; 17. discharge rack; 18. discharge port; 19. sleeve rod; 20. clamping member; 21. guide port; 22. clamping groove. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] like Figure 1-Figure 5 As shown, the utility model provides a coating mechanism, including a coating robot arm, a coating rod bin and a discharge rack 17. A rotatable material picker 13 is installed at the end of the coating robot arm. The coating robot arm is used to drive the material picker 13 to move in the horizontal and vertical directions, and drive the coating rod 12 clamped by the material picker 13 to rotate during coating. In the initial stage, multiple coating rods 12 are placed side by side in the coating rod bin.

[0029] The coating rod material bin includes a material rack 6, the edge of the material rack 6 is provided with a positioning hole that matches the work surface, and the bottom end of the positioning hole is provided with a magnet 11 to facilitate the installation of the material rack 6 and the work surface. A push-pull block 7 is slidably installed inside the material rack 6 along its length direction, and a first fixed seat 14 and a second fixed seat 15 are fixedly installed on the front and back sides of the bottom end of the material rack 6 respectively, and two sliding rods 8 parallel to each other are installed between the two fixed seats. The push-pull block 7 is installed on the two sliding rods 8 so that the push-pull block 7 can slide inside the material rack 6. A number of coating rods 12 arranged side by side are placed inside the material rack 6, and a discharge port 10 is provided at the top of the material rack 6. The width of the discharge port 10 is not less than the thickness of one coating rod 12, and less than the sum of the widths of two coating rods 12.

[0030] In order to realize that after the coating rod 12 located at the discharge port 10 is taken out, the subsequent coating rods 12 can be moved to the discharge port 10 in sequence, the present technical solution connects an elastic tensioning member 9 between the bottom end of the push-pull block 7 and the bottom end of the material rack 6. The elastic tensioning member 9 can be a tension spring or an elastic rope, which can realize tension on the push-pull block 7 to compress multiple coating rods 12. When used specifically, it can be adaptively selected according to actual needs. A connecting rod 16 is provided on the second fixed seat 15. One end of the elastic tensioning member 9 is fixed to the bottom end of the push-pull block 7. The other end of the elastic tensioning member 9 bypasses the connecting rod 16 and is fixedly connected to the first fixed seat 14, providing the push-pull block 7 with a clamping force on the coating rod 12.

[0031] A plug interface is provided at the top of the coating rod 12, and a pin is provided in the plug interface for clamping with the material picker 13; wherein the material picker 13 includes a sleeve rod 19 and a clamping piece 20, the clamping piece 20 is fixedly installed on the end of the sleeve rod 19, and a spliced ​​arc-shaped clamping groove 22 is provided on the clamping piece 20, and a guide port 21 connected to the clamping groove 22 is provided at the bottom end of the clamping piece 20. After the coating robot arm drives the material picker 13 to move to the position of the discharge port 10 of the material rack 6, the material picker 13 is moved downward, and under the action of the guide port 21, the pin in the coating rod 12 slides into the spliced ​​clamping groove 22. When the coating robot arm pulls the material picker 13 upward, the clamping groove 22 is engaged with the pin, so the coating rod 12 will be taken out for subsequent coating operations. The coating rod 12 is taken out by the coating robot arm at the discharge port 10 , and the push-pull block 7 pushes the remaining coating rods 12 forward under the action of the tension spring to replenish the discharge port 10 .

[0032] The bottom end of the material rack 6 is located at the discharge port 10 and is provided with a detection port 601, at which a detection sensor is installed. The detection port 601 is set at the edge of the discharge port 10 to prevent misidentification of the push-pull block 7. When the detection sensor detects that there is no coating rod at the discharge port 10, it will feedback a signal to the operating end of the device, so as to facilitate timely replenishment of the coating rod 12 in the material rack 6.

[0033] The coating robot arm includes a transverse motion mechanism 1 and a longitudinal motion mechanism 2. The transverse motion mechanism 1 includes a first motor 101 and a chain transmission assembly. The output end of the first motor 101 is fixedly connected to a sprocket of the chain transmission assembly. A fixed frame 103 is fixedly installed on the chain of the chain transmission assembly. The longitudinal motion mechanism 2 is fixedly installed on the fixed frame 103. The chain transmission assembly is driven by the first motor 101 to drive the longitudinal motion mechanism 2 to move transversely; the longitudinal motion mechanism 2 includes a sliding seat 201, which is fixedly installed on the fixed frame 103. A screw rod 203 is rotatably installed on the sliding seat 201. A slider 204 that cooperates with the screw rod 203 is slidably installed on the sliding seat 201. A second motor 202 is fixedly installed on the top of the sliding seat 201. The output shaft of the second motor 202 is fixedly connected to the screw rod 203. A coating shaft mechanism 3 that drives the material picker 13 to rotate is installed on the side of the slider 204. The slider 204 is driven by the second motor 202 to drive the coating shaft mechanism 3 to move up and down under the cooperation with the screw rod 203.

[0034] The coating shaft mechanism 3 includes a coating shaft 302 and a third motor 301. The output shaft of the third motor 301 is fixedly connected to the coating shaft 302. The sleeve rod 19 is sleeved on the inner side of the coating shaft 302. Specifically: a through hole is opened on the sleeve rod 19, and a strip hole is opened on the coating shaft 302. An adjusting rod is installed at the through hole on the sleeve rod 19 so that the adjusting rod can slide up and down in the strip hole. A spring is installed between the end of the coating shaft 302 and the clamping part 20. The spring is used to buffer the contact between the coating rod 12 and the culture medium to prevent the coating rod 12 from compressing and damaging the culture medium.

[0035] The unloading rack 17 is arranged on the coating rod bin, preferably at the front end of the coating rod bin. An open unloading port 18 is arranged on the top of the unloading rack 17, and the length of the unloading port 18 is less than the length of the coating rod 12. When unloading the coating rod 12, it moves to the front of the unloading rack 17, moves along the movement trajectory, and finally pulls upward to complete the separation of the coating rod 12.

[0036] A pipeline heat preservation chamber 4 is also fixedly installed at the bottom end of the sliding seat 201. A plurality of filling heads 5 are placed in the pipeline heat preservation chamber 4. Each filling head 5 is connected to a corresponding culture medium and can be filled with a variety of culture media. The filling head 5 can move forward and backward with the lateral motion mechanism 1 to fill the culture dish set at the front station of the coating rod bin with culture medium. The culture medium can also be filled during the process of automatically disassembling and assembling the coating rod, which effectively saves space.

[0037] The coating robot arm in the device is multifunctional and integrated, and is used for taking out and unloading the coating rod 12, coating culture dishes, filling culture medium and keeping pipelines warm, etc. When working, the material picker 13 is directly above the discharge port 10 of the material rack 6, moves downward, and the engaging groove 22 is engaged with the pin in the coating rod 12 to complete the action of taking out the coating rod 12. The coating shaft can move up and down, forward and backward, and then move the coating rod 12 to the culture medium so that the bottom surface of the coating rod 12 contacts the culture medium, add the diluted sample to the culture medium, and use the coating rod 12 to evenly coat it on the surface of the culture medium to ensure that the entire flat plate surface is covered; after coating, move the coating rod 12 to the discharge rack 17 and move according to a preset trajectory (first move downward, then move horizontally to move the coating rod 12 to the discharge port 18 of the discharge rack 17, and then pull the material picker 13 upward), and collect the used coating rod 12 under the action of the discharge port 18.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A coating mechanism, characterized in that: It comprises a coating mechanical arm, a material taker (13) and a coating rod material bin, wherein the material taker (13) is arranged at the end of the coating mechanical arm, and the coating mechanical arm is used to drive the material taker (13) to move in the horizontal and vertical directions and drive the material taker (13) to rotate; The coating rod material bin comprises a material rack (6), a push-pull block (7) is slidably installed inside the material rack (6) along its length direction, an elastic tensioning member (9) is connected between the bottom end of the push-pull block (7) and the bottom end of the material rack (6), a plurality of coating rods (12) pressed by the push-pull block (7) are placed inside the material rack (6), a discharge port (10) is provided at the top end of the material rack (6), and the material picker (13) is used to take the coating rods (12) located at the discharge port (10).

2. The coating mechanism according to claim 1, characterized in that: A first fixed seat (14) and a second fixed seat (15) are respectively fixedly installed on the front and rear sides of the bottom end of the material rack (6), two sliding rods (8) parallel to each other are installed between the two fixed seats, the push-pull block (7) is cooperatively installed on the two sliding rods (8), and a connecting rod (16) is provided on the second fixed seat (15), one end of the elastic tensioning member (9) is fixed to the bottom end of the push-pull block (7), and the other end of the elastic tensioning member (9) is fixedly connected to the first fixed seat (14) after passing through the connecting rod (16).

3. The coating mechanism according to claim 1, characterized in that: The width of the discharge port (10) is not less than the thickness of the coating rod (12), and the width of the discharge port (10) is less than the sum of the widths of the two coating rods (12).

4. The coating mechanism according to claim 1, characterized in that: The material extractor (13) comprises a sleeve rod (19) and a clamping piece (20), wherein the clamping piece (20) is fixedly mounted on the end of the sleeve rod (19), a spliced ​​clamping groove (22) is provided on the clamping piece (20), and a guide port (21) communicating with the clamping groove (22) is provided at the bottom end of the clamping piece (20).

5. The coating mechanism according to claim 4, characterized in that: The coating robot arm comprises a transverse motion mechanism (1) and a longitudinal motion mechanism (2), wherein the transverse motion mechanism (1) comprises a first motor (101) and a chain transmission assembly (102), wherein the output end of the first motor (101) is fixedly connected to a sprocket of the chain transmission assembly (102), a fixed frame (103) is fixedly mounted on the chain of the chain transmission assembly (102), and the longitudinal motion mechanism (2) is fixedly mounted on the fixed frame (103); the longitudinal motion mechanism (2) comprises a sliding seat (201), the sliding seat (202) The movable seat (201) is fixedly mounted on the fixed frame (103); a screw rod (203) is rotatably mounted on the sliding seat (201); a slider (204) cooperating with the screw rod (203) is slidably mounted on the sliding seat (201); a second motor (202) is fixedly mounted on the top of the sliding seat (201); an output shaft of the second motor (202) is fixedly connected to the screw rod (203); and a coating shaft mechanism (3) for driving the material picker (13) to rotate is mounted on the side of the slider (204).

6. The coating mechanism according to claim 5, characterized in that: The coating shaft mechanism (3) comprises a coating shaft (302) and a third motor (301), the output shaft of the third motor (301) is fixedly connected to the coating shaft (302), and the sleeve rod (19) is sleeved on the inner side of the coating shaft (302).

7. The coating mechanism according to claim 6, characterized in that: The sleeve rod (19) is provided with a through hole, the coating shaft (302) is provided with a strip hole, an adjusting rod is installed on the sleeve rod (19) at the through hole, and a spring is installed between the end of the coating shaft (302) and the clamping member (20).

8. The coating mechanism according to claim 1, characterized in that: It also comprises a discharge rack (17), the top end of which is provided with an open discharge port (18), the length of which is less than the length of the coating rod (12).

9. The coating mechanism according to claim 1 or 2, characterized in that: The elastic tensioning member (9) is a tension spring or an elastic rope.

10. The coating mechanism according to claim 1, characterized in that: The bottom end of the material rack (6) is located at the position of the material outlet (10) and is provided with a detection port (601), and a detection sensor is installed at the detection port (601).

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