A hand-held, non-contact, long-range seed selection marking device and method of use

Abstract

The application relates to the technical field of handheld non-contact long-distance seed selection marking, in particular to a handheld non-contact long-distance seed selection marking device and a use method thereof. The device comprises a handle, a ventilation switch, a multistage nozzle and a connecting soft joint. The upper end of the handle is provided with the ventilation switch, the ventilation switch is connected with a gun body, the side, away from the handle, of the gun body is connected with the multistage nozzle through the connecting soft joint, the upper end of the multistage nozzle is provided with a positioning bent plate, the other end of the positioning bent plate is fixedly connected with an auxiliary positioning unit, the other side of the auxiliary positioning unit is provided with a control bent rod, the other end of the control bent rod is fixedly connected with a half gear, and the half gear is arranged in an adjusting unit. In the application, the multistage nozzle can be aimed at the center of a pig during long-distance marking of the pig. In the marking moment, the pig moves, paint can be sprayed on the pig, and the accuracy of pig marking and the success rate of marking can be further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of handheld non-contact long-distance seed selection marking, in particular to a handheld non-contact long-distance seed selection marking device and a use method thereof. Background Art

[0002] The handheld non-contact remote selection marking device is a device used for pig management. It can mark pigs with paint at a distance without direct contact with the pigs.

[0003] This device, similar to a paint spotter, can transfer paint to pigs via a robotic arm or conveyor belt to achieve the purpose of marking. It is mainly used in pig farms during breeding, treatment, vaccination, and other processes. By marking pigs with different colors of paint, it allows for more efficient and accurate attention to relevant individuals or small groups during on-site production management. This contactless method not only improves work efficiency, but also reduces stress on pigs, while also avoiding the risk of cross-infection that may be caused by manual marking.

[0004] In the process of marking pigs using a handheld non-contact long-distance breeding marking device, there is a problem of uncertain movement of the pigs. If the pigs move a large distance at the moment the marking device sprays, the marking position will be inaccurate, and even the sprayed paint will not be sprayed onto the pigs, resulting in marking failure. Therefore, in order to solve the above problems, a handheld non-contact long-distance breeding marking device and a method of using the same are proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a handheld non-contact long-distance breeding marking device and a method of using the same, so as to solve the problem of uncertain movement of pigs during the process of marking pigs using a handheld non-contact long-distance breeding marking device. If the pigs move a large distance at the moment of spraying by the marking device, it will lead to inaccurate marking position, and even cause the sprayed paint to fail to be sprayed onto the pigs, resulting in marking failure.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A handheld non-contact long-distance seed selection marking device and a method of using the same, comprising a grip, a ventilation switch, a multi-stage nozzle and a connecting soft joint, wherein the ventilation switch is installed at the upper end of the grip, the ventilation switch is connected to the gun body, the side of the gun body away from the grip is connected to the multi-stage nozzle via a connecting soft joint, the upper end of the multi-stage nozzle is installed with a positioning bent plate, the other end of the positioning bent plate is fixedly connected to an auxiliary positioning unit, the other side of the auxiliary positioning unit is installed with a control bent rod, the other end of the control bent rod is fixedly connected to a half gear, and the half gear is installed inside the adjustment unit; the adjustment unit comprises an adjustment shell, the inner side of the adjustment shell is provided with a cavity, the upper end of the adjustment shell is spirally connected to a first adjusting screw, the bottom end of the first adjusting screw is rotatably connected to a first frustum block, the lower end of the first frustum block is provided with a second frustum block, the bottom end of the second frustum block is welded and fixed to the circular gear, A V-belt is installed between the first frustum block and the second frustum block, the inner side of the other end of the V-belt is rotatably connected to the belt pulley, the middle of the belt pulley is fixedly connected with a connecting shaft, the outer side of the lower end of the connecting shaft is fixedly connected to the adjusting disc, and a tensioner is installed on one side of the V-belt; the auxiliary positioning unit includes an auxiliary shell, the middle of the upper and lower ends of the auxiliary shell are respectively fixedly connected with a center laser light and a vertical shaft, a spring is installed on the outer side of the lower end of the vertical shaft, and the vertical shaft is rotatably connected to the fixed plate through the spring, side laser lights are installed on the upper sides of both ends of the auxiliary shell, the bottom end of the side laser light is fixedly connected to a rotating shaft, and the middle outer side of the rotating shaft is fixedly connected to a gear ring, a slider is slidably connected to the middle of the auxiliary shell, the bottom end of the slider is fixedly connected to the adjusting plate, a connecting block is welded and fixed on one side of the adjusting plate, and a second adjusting screw is spirally connected to the inside of the connecting block.

[0008] As a further optimization of the present invention, the half gear and the welding point between the control bending rod and the half gear are installed inside the cavity, the half gear is meshed with the circular gear, and the circular gear, the first frustum block and the second frustum block are coaxial.

[0009] As a further optimization of the present invention, a circular shaft is installed between the second truncated cone block and the circular gear, the bottom end of the circular shaft is rotatably connected to the adjusting housing, the top end of the circular shaft is exposed at the upper end of the second truncated cone block, and the position where the top end of the circular shaft is exposed at the upper end of the second truncated cone block is slidably connected to the first truncated cone block.

[0010] As a further optimization of the present invention, the top and bottom ends of the connecting shaft are both rotatably connected to the adjusting shell, the fixed end of the tensioner is fixedly connected to the inner wall of the cavity, one side of the adjusting disc is exposed outside the adjusting shell, and the bottom end of the adjusting shell is fixedly connected to the gun body.

[0011] As a further optimization of the present invention, the adjusting end of the first adjusting screw is exposed on the outside of the adjusting shell, the angle between the first adjusting screw and the upper end surface of the adjusting shell is 90°, and the first adjusting screw and the first frustum block have the same axis.

[0012] As a further optimization of the present invention, the bottom end of the auxiliary shell is welded and fixed to a fixing plate, the fixing plate is fixedly connected to the outside of the gun body, the auxiliary shell is fixedly connected to a positioning bent plate, and the positioning bent plate is L-shaped.

[0013] As a further optimization of the present invention, the adjustment plates are each provided with a notch, the notch is provided with a tooth groove inside, the tooth grooves are staggered at both ends of the adjustment plate, and the adjustment plate engages with the gear ring through the tooth grooves provided at both ends.

[0014] As a further optimization of the present invention, the adjusting end of the second adjusting screw is exposed on the outside of the auxiliary shell, the second adjusting screw is rotatably connected to the auxiliary shell, two side laser lights, two rotating shafts and two gear rings are provided, the rotating shaft is rotatably connected to the auxiliary shell, and the gear ring and the adjustment plate are arranged on the same horizontal plane.

[0015] As a further optimized content of the present invention, the side laser lights are symmetrically arranged with the central laser light as the center, the central laser light is located directly above the gun body, and the auxiliary shell is welded and fixed to the control bending rod.

[0016] As a further optimization of the present invention, the following steps are included: Step I: Filling the interior of the equipment with paint and ventilating: filling the interior of the equipment with paint for marking, and after the filling is completed, using an air pump and a hose to directly connect the equipment for ventilation, ready to mark the pigs;

[0017] Step II: Positioning the pigs by the central laser light and the side laser light: During the marking process, first adjust the angle of the side laser light according to the length of the pig. During the adjustment process, the second adjustment screw is used to control the movement of the adjustment plate. During the adjustment process, the side laser lights set on both sides will rotate at opposite angles to achieve adjustment. After the adjustment is completed, control the central laser light to irradiate the middle position of the pig. During the irradiation process, the center position is further determined by the irradiation of the two side laser lights. The irradiation point is adjusted by the adjustment unit. During the adjustment process, the adjustment disk is rotated. During the rotation of the adjustment disk, the V-belt is driven to rotate by the belt pulley. During the rotation of the V-belt, the circular gear is driven to rotate by the first and second frustum blocks, and then the circular gear drives the half gear to rotate. During the rotation of the half gear, the auxiliary positioning unit is driven to rotate by the control bent rod, thereby achieving the irradiation angle offset of the central laser light and the side laser light. During the adjustment process, the rotation ratio of the adjustment disk and the circular gear can be adjusted by controlling the distance between the first and second frustum blocks.

[0018] Step III: Control the ventilation switch to open and mark: After accurate irradiation, control the ventilation switch to open and mark the pigs through the multi-stage nozzle.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, by providing an adjustment unit and an auxiliary positioning unit, during the process of remote marking of pigs, the multi-stage nozzle can be aligned with the center of the pig. At the moment of marking, the pig moves and the paint can be sprayed onto the pig, which can further improve the accuracy of pig marking and the success rate of marking;

[0021] 2. In the present invention, the marker is emitted outside the pen, and the breeder does not need to enter the pen or touch the pigs, which can improve biosafety, reduce biosafety risks, and reduce pig stress. At the same time, it is fast and convenient, and one person can mark a pig house quickly, which improves work efficiency and reduces work intensity.

[0022] 3. In the present invention, during the process of irradiating pigs with the central laser lamp and the side laser lamp, the irradiation angle can be adjusted, thereby ensuring the accuracy of the marking. During the adjustment process, the rotation ratio of the adjustment disc and the circular gear can be adjusted as needed, thereby meeting the usage requirements of different staff members and effectively improving the overall applicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 Structure diagram of A in the present invention

[0025] Figure 3 Structure diagram of the adjusting unit of the present invention

[0026] Figure 4 Structure diagram of the auxiliary positioning unit of the present invention

[0027] Figure 5 For the present invention Figure 4 Structure diagram of B in the present invention

[0028] Figure 6 For the present invention Figure 4 Structure diagram of C in the present invention

[0029] In the figure: 1, handle; 2, air switch;

[0030] 3, adjusting unit; 31, adjusting shell; 32, cavity; 33, first circular block; 34, first adjusting screw; 35, second circular block; 36, circular gear; 37, tensioner; 38, pulley; 39, connecting shaft; 310, adjusting disc; 311, triangular belt;

[0031] 4, half gear;

[0032] 5, auxiliary positioning unit; 51, auxiliary shell; 52, central laser light; 53, sliding block; 54, adjusting plate; 55, vertical shaft; 56, clockwork spring; 57, side laser light; 58, rotating shaft; 59, gear ring; 510, connecting block; 511, second adjusting screw;

[0033] 6, control bending rod; 7, positioning bending plate; 8, multi-stage nozzle; 9, connecting soft section; 10, fixed plate; 11, gun body. DETAILED DESCRIPTION

[0034] Please refer to Figure 1-6 , the present invention provides a technical solution:

[0035] The utility model provides a kind of handheld non-contact long-distance seed selection marking device and its using method, including handle 1, ventilation switch 2, multistage nozzle 8 and connecting soft node 9, handle 1 upper end is equipped with ventilation switch 2, ventilation switch 2 is connected with gun body 11, multistage nozzle 8 is connected by connecting soft node 9 on the side of gun body 11 far from handle 1, multistage nozzle 8 upper end is equipped with positioning bent plate 7, the other end of positioning bent plate 7 is fixedly connected with auxiliary positioning unit 5, auxiliary positioning unit 5 other side is equipped with control bent rod 6, control bent rod 6 other end is fixedly connected with half gear 4, and half gear 4 is installed in adjusting unit 3 inside;Adjusting unit 3 includes adjusting shell 31, and cavity 32 is opened in adjusting shell 31 inboard, and adjusting shell 31 upper end is screw-connected with first adjusting screw 34, and first adjusting screw 34 bottom end is rotatably connected with first circular table block 33, and first circular table block 33 lower end is equipped with second circular table block 35, and second circular table block 35 bottom end is welded with circular gear 36, and half gear 4 is installed between first circular table block 33 and second circular table block 35, and triangular belt 311 is installed, and triangular belt 311 other end inboard is rotatably connected with belt disc 38, and belt disc 38 middle is fixedly connected with connecting shaft 39, and connecting shaft 39 lower end outboard is fixedly connected with adjusting disc 310, and triangular belt 311 one side is equipped with tensioner 37;Auxiliary positioning unit 5 includes auxiliary shell 51, and center laser lamp 52 and vertical shaft 55 are fixedly connected with auxiliary shell 51 upper and lower ends middle respectively, and clock spring 56 is installed on the outer side of the lower end of vertical shaft 55, and vertical shaft 55 is rotatably connected with fixed plate 10 through clock spring 56, and side laser lamp 57 is installed on the upper side of both ends of auxiliary shell 51, and rotating shaft 58 is fixedly connected with the bottom end of side laser lamp 57, and gear ring 59 is fixedly connected with the outer side of the middle of rotating shaft 58, and sliding block 53 is slidably connected in the middle of the inside of auxiliary shell 51, and adjusting plate 54 is fixedly connected with the bottom end of sliding block 53, and connecting block 510 is welded and fixed on one side of adjusting plate 54, and second adjusting screw 511 is screw-connected in the inside of connecting block 510.

[0036] As a further embodiment of the present scheme, the half gear 4 and the control bent rod 6 are installed in the cavity 32, the half gear 4 is engaged with the circular gear 36, the circular gear 36, the first circular table block 33 and the second circular table block 35 are coaxial, and the control bent rod 6 is driven by the half gear 4 to rotate stably through the above arrangement.

[0037] As a further embodiment of the present scheme, a circular shaft is installed between the second circular table block 35 and the circular gear 36, the bottom end of the circular shaft is rotatably connected with the adjusting shell 31, the top end of the circular shaft is exposed on the upper end of the second circular table block 35, and the position of the top end of the circular shaft exposed on the upper end of the second circular table block 35 is slidably connected with the first circular table block 33, which can ensure that the first circular table block 33 and the second circular table block 35 always limit the triangular belt 311.

[0038] As a further technical solution of this scheme, the top and bottom ends of the connecting shaft 39 are rotatably connected to the adjustment housing 31, the fixed end of the tensioner 37 is fixedly connected to the inner wall of the cavity 32, one side of the adjustment disc 310 is exposed outside the adjustment housing 31, and the bottom end of the adjustment housing 31 is fixedly connected to the gun body 11. Through the above arrangement, the tensioner 37 can keep the V-belt 311 in a taut state at all times.

[0039] As a further technical solution of this solution, the adjustment end of the first adjusting screw 34 is exposed outside the adjusting housing 31. The angle between the first adjusting screw 34 and the upper end surface of the adjusting housing 31 is 90 degrees. The first adjusting screw 34 and the first frustum block 33 are coaxial. With this arrangement, the spacing between the first frustum block 33 and the second frustum block 35 can be adjusted.

[0040] As a further technical solution implemented in this solution, the bottom end of the auxiliary housing 51 is welded and fixed to the fixing plate 10, the fixing plate 10 is fixedly connected to the outside of the gun body 11, and the auxiliary housing 51 is fixedly connected to the positioning bent plate 7, and the positioning bent plate 7 is L-shaped. Through the above arrangement, the auxiliary housing 51 can be stably limited;

[0041] As a further technical solution for implementing this solution, the adjustment plates 54 are each provided with a notch, and a tooth groove is provided inside the notch. The tooth grooves are staggered at both ends of the adjustment plate 54. The adjustment plate 54 engages with the gear ring 59 through the tooth grooves provided at both ends. Through this arrangement, the two side laser lamps 57 can be adjusted simultaneously for synchronous angle adjustment.

[0042] As a further technical solution for implementing this solution, the adjustment end of the second adjustment screw 511 is exposed outside the auxiliary housing 51. The second adjustment screw 511 is rotatably connected to the auxiliary housing 51. Two side laser lights 57, two rotating shafts 58, and two ring gears 59 are each provided. The rotating shaft 58 is rotatably connected to the auxiliary housing 51. The ring gear 59 and the adjustment plate 54 are arranged on the same horizontal plane. Through this arrangement, the adjustment plate 54 can be stably adjusted by the second adjustment screw 511.

[0043] As a further technical solution implemented in this scheme, the side laser lamps 57 are symmetrically arranged with the central laser lamp 52 as the center. The central laser lamp 52 is located directly above the gun body 11. The auxiliary housing 51 is welded and fixed to the control bending rod 6. Through this arrangement, the stability of the entire device during use can be further improved.

[0044] As a further implementation of this solution, the technical solution includes the following steps: Step I: Filling the interior of the equipment with paint and ventilating: Filling the interior of the equipment with paint for marking, after filling is completed, using an air pump and a hose to directly connect the equipment for ventilation, ready to mark the pigs;

[0045] Step II: positioning the pig by the central laser lamp 52 and the side laser lamp 57: in the marking process, first, the angle of the side laser lamp 57 is adjusted according to the length of the pig, in the adjusting process, the adjusting plate 54 is moved by controlling the second adjusting screw 511 to achieve, in the adjusting process, the side laser lamps 57 arranged on both sides will rotate at opposite angles to achieve adjustment, after the adjustment is completed, the central laser lamp 52 is controlled to irradiate the middle position of the pig, in the irradiation process, the central position is further determined by the irradiation of the two side laser lamps 57, the irradiation point is adjusted by the adjusting unit 3, in the adjusting process, the adjusting disc 310 is rotated, in the rotating process of the adjusting disc 310, the triangular belt 311 is rotated by the belt disc 38, in the rotating process of the triangular belt 311, the circular gear 36 is rotated by the first circular block 33 and the second circular block 35, and then the half gear 4 is rotated by the circular gear 36, in the rotating process of the half gear 4, the auxiliary positioning unit 5 is rotated by controlling the bent rod 6, and then the irradiation angle of the central laser lamp 52 and the side laser lamp 57 is offset, in the adjusting process, the rotating ratio of the adjusting disc 310 and the circular gear 36 can be adjusted by controlling the distance between the first circular block 33 and the second circular block 35;

[0046] Step III: control the air switch 2 to open and mark: after accurate irradiation, the air switch 2 is controlled to open, and the pig is marked by the multi-stage nozzle 8.

[0047] In this paper, specific examples are used to illustrate the principles and embodiments of the application. The above examples are only used to help understand the method of the application and its core idea. The above description is only the preferred embodiment of the application. It should be noted that due to the limitation of language expression, there are infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, decorations or changes can be made without departing from the principles of the application, and the above technical features can be combined in a proper way; these improvements, decorations, changes or combinations, or the application of the concept and technical scheme of the application to other fields without improvement, shall be regarded as the protection scope of the application.

Claims

1. A handheld non-contact long-distance seed selection and marking device, comprising a handle (1), a ventilation switch (2), a multi-stage nozzle (8) and a connecting soft joint (9), characterized in that: A ventilation switch (2) is installed on the upper end of the handle (1), and the ventilation switch (2) is connected to the gun body (11). The side of the gun body (11) away from the handle (1) is connected to the multi-stage nozzle (8) through a connecting soft joint (9). A positioning bent plate (7) is installed on the upper end of the multi-stage nozzle (8), and the other end of the positioning bent plate (7) is fixedly connected to the auxiliary positioning unit (5). A control bent rod (6) is installed on the other side of the auxiliary positioning unit (5), and the other end of the control bent rod (6) is fixedly connected to a half gear (4). The half gear (4) is installed inside the adjustment unit (3); The adjusting unit (3) includes an adjusting housing (31), a cavity (32) is provided on the inner side of the adjusting housing (31), an upper end of the adjusting housing (31) is spirally connected to a first adjusting screw (34), a lower end of the first adjusting screw (34) is rotatably connected to a first frustum block (33), a lower end of the first frustum block (33) is provided with a second frustum block (35), a lower end of the second frustum block (35) is welded and fixed to a circular gear (36), a V-belt (311) is installed between the first frustum block (33) and the second frustum block (35), the inner side of the other end of the V-belt (311) is rotatably connected to a belt pulley (38), a connecting shaft (39) is fixedly connected in the middle of the belt pulley (38), the outer side of the lower end of the connecting shaft (39) is fixedly connected to the adjusting disc (310), and a tensioner (37) is installed on one side of the V-belt (311); The auxiliary positioning unit (5) comprises an auxiliary housing (51), wherein the middle of the upper and lower ends of the auxiliary housing (51) are respectively fixedly connected with a central laser light (52) and a vertical shaft (55), the outer side of the lower end of the vertical shaft (55) is installed with a spring spring (56), and the vertical shaft (55) is rotatably connected to the fixed plate (10) through the spring spring (56), and the upper sides of both ends of the auxiliary housing (51) are both installed with side laser lights (57), the bottom end of the side laser light (57) is fixedly connected with a rotating shaft (58), and the middle outer side of the rotating shaft (58) is fixedly connected with a gear ring (59), the middle of the auxiliary housing (51) is slidably connected with a slider (53), the bottom end of the slider (53) is fixedly connected with an adjustment plate (54), a connecting block (510) is welded and fixed on one side of the adjustment plate (54), and a second adjusting screw (511) is spirally connected inside the connecting block (510).

2. A handheld non-contact long-distance seed selection and marking device according to claim 1, characterized in that: The half gear (4) and the welding point between the control bending rod (6) and the half gear (4) are installed inside the cavity (32), the half gear (4) is meshed with the circular gear (36), and the circular gear (36), the first truncated cone block (33) and the second truncated cone block (35) are coaxial.

3. A handheld non-contact long-distance seed selection and marking device according to claim 1, characterized in that: A circular shaft is installed between the second truncated cone block (35) and the circular gear (36), the bottom end of the circular shaft is rotatably connected to the adjustment housing (31), the top end of the circular shaft is exposed at the upper end of the second truncated cone block (35), and the position where the top end of the circular shaft is exposed at the upper end of the second truncated cone block (35) is slidably connected to the first truncated cone block (33).

4. A handheld non-contact long-distance seed selection and marking device according to claim 1, characterized in that: The top and bottom ends of the connecting shaft (39) are both rotatably connected to the adjustment housing (31), the fixed end of the tensioner (37) is fixedly connected to the inner wall of the cavity (32), one side of the adjustment disc (310) is exposed outside the adjustment housing (31), and the bottom end of the adjustment housing (31) is fixedly connected to the gun body (11).

5. The handheld non-contact long-distance seed selection and marking device according to claim 1, characterized in that: The adjusting end of the first adjusting screw (34) is exposed outside the adjusting housing (31), the angle between the first adjusting screw (34) and the upper end surface of the adjusting housing (31) is 90°, and the first adjusting screw (34) and the first frustum (33) are coaxial.

6. The handheld non-contact long-distance seed selection and marking device according to claim 1, characterized in that: The bottom end of the auxiliary housing (51) is welded and fixed to the fixing plate (10), and the fixing plate (10) is fixedly connected to the outside of the gun body (11). The auxiliary housing (51) is fixedly connected to the positioning bent plate (7), and the positioning bent plate (7) is L-shaped.

7. The handheld non-contact long-distance seed selection and marking device according to claim 1, characterized in that: The adjustment plates (54) are each provided with a notch, and tooth grooves are provided inside the notch. The tooth grooves are staggered at both ends of the adjustment plate (54). The adjustment plate (54) is meshed with the gear ring (59) through the tooth grooves provided at both ends.

8. The handheld non-contact long-distance seed selection and marking device according to claim 1, characterized in that: The adjusting end of the second adjusting screw (511) is exposed outside the auxiliary housing (51), and the second adjusting screw (511) is rotatably connected to the auxiliary housing (51). Two side laser lights (57), two rotating shafts (58), and two gear rings (59) are provided. The rotating shaft (58) is rotatably connected to the auxiliary housing (51), and the gear ring (59) and the adjusting plate (54) are arranged on the same horizontal plane.

9. The handheld non-contact long-distance seed selection and marking device according to claim 1, characterized in that: The side laser lights (57) are symmetrically arranged with the central laser light (52) as the center. The central laser light (52) is located directly above the gun body (11). The auxiliary housing (51) and the control bending rod (6) are welded and fixed.

10. A method for using a handheld non-contact remote seed selection and marking device according to any one of claims 1 to 9, characterized in that: The method includes the following steps: Step I: Filling the interior of the equipment with paint and ventilating: Filling the interior of the equipment with paint for marking. After the filling is completed, an air pump and a hose are used to directly connect the equipment for ventilation, in preparation for marking the pigs; Step II: Positioning the pigs by the central laser light (52) and the side laser light (57): During the marking process, first adjust the angle of the side laser light (57) according to the length of the pig. During the adjustment process, the second adjusting screw (511) is used to control the movement of the adjustment plate (54). During the adjustment process, the side laser lights (57) set on both sides will rotate at opposite angles to achieve adjustment. After the adjustment is completed, the central laser light (52) is controlled to irradiate the middle position of the pig. During the irradiation process, the center position is further determined by the irradiation of the two side laser lights (57). The irradiation point is adjusted by the adjustment unit (3). During the adjustment process, the adjustment disk (310) is rotated to rotate. During the rotation of the adjusting disc (310), the belt pulley (38) drives the V-belt (311) to rotate. During the rotation of the V-belt (311), the first truncated cone block (33) and the second truncated cone block (35) drive the circular gear (36) to rotate, and then the circular gear (36) drives the half gear (4) to rotate. During the rotation of the half gear (4), the auxiliary positioning unit (5) is driven to rotate by controlling the bent rod (6), thereby achieving the irradiation angle offset of the central laser light (52) and the side laser light (57). During the adjustment process, the rotation ratio of the adjusting disc (310) and the circular gear (36) can be adjusted by controlling the distance between the first truncated cone block (33) and the second truncated cone block (35); Step III: Control the ventilation switch (2) to open and mark: After accurate irradiation, control the ventilation switch (2) to open and mark the pigs through the multi-stage nozzle (8).

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