Handheld non-contact remote seed selection marking device and use method thereof

Abstract

The 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 using method thereof.The handheld non-contact long-distance seed selection marking device comprises a grip, a ventilation switch, a multi-stage nozzle and a connecting flexible joint, the ventilation switch is installed at the upper end of the grip and connected with a gun body, and the multi-stage nozzle is connected with the gun body; the side, away from the grip, of the gun body is connected with a multi-stage nozzle through a connecting flexible joint, a positioning bent plate is installed at the upper end of the multi-stage nozzle, the other end of the positioning bent plate is fixedly connected with an auxiliary positioning unit, a control bent rod is installed on the other side of the auxiliary positioning unit, the other end of the control bent rod is fixedly connected with a half gear, and the half gear is installed in an adjusting unit. According to the pig marking device, in the process of remotely marking a pig, the multi-stage nozzles can be aligned to the center of the pig, the pig moves at the moment of marking, paint can be sprayed to the pig, and the pig marking accuracy and the marking success rate 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 long-distance selection marking device is a device used for pig management. It can spray paint on pigs at a distance without direct contact with the pigs; This device is similar to a paint spotting machine. It can transfer paint to pigs through a mechanical arm or a conveyor belt to achieve the purpose of marking. It is mainly used in the breeding, treatment, vaccination and other processes of pig farms. By using different colors of paint to mark pigs, it is easier to pay attention to related individuals or small groups more efficiently and accurately during on-site production management. This non-contact 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. In the process of marking pigs with a handheld non-contact long-distance breeding selection marking device, there is a problem of uncertain movement of the pigs. 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 spray onto the pigs, resulting in marking failure. Therefore, in order to solve the above problem, a handheld non-contact long-distance breeding selection marking device and a method of using the same are proposed. Summary of the invention

[0003] 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 by means of a handheld non-contact long-distance breeding marking device. If the pig moves a large distance at the moment of spraying by the marking device, it will cause inaccurate marking position, and even cause the sprayed paint to fail to be sprayed onto the pig, resulting in marking failure.

[0004] To achieve the above object, the present invention provides the following technical solutions: A handheld non-contact long-distance seed selection marking device and a method of using the same, comprising a handle, a ventilation switch, a multi-stage nozzle and a connecting soft joint, wherein the ventilation switch is installed at the upper end of the handle, the ventilation switch is connected to a gun body, the side of the gun body away from the handle is connected to the multi-stage nozzle via a connecting soft joint, a positioning bent plate is installed at the upper end of the multi-stage nozzle, the other end of the positioning bent plate is fixedly connected to an auxiliary positioning unit, a control bent rod is installed at the other side of the auxiliary positioning unit, the other end of the control bent rod is fixedly connected to a half gear, and the half gear is installed inside an adjusting unit; the adjusting unit comprises an adjusting shell, a cavity is provided inside the adjusting shell, the upper end of the adjusting 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 a circular gear, A V-belt is installed between the first truncated cone block and the second truncated cone block, the inner side of the other end of the V-belt is rotatably connected to the belt pulley, a connecting shaft is fixedly connected in the middle of the belt pulley, the outer side of the lower end of the connecting shaft is fixedly connected to the adjusting disk, and a tensioner is installed on one side of the V-belt; the auxiliary positioning unit comprises an auxiliary shell, a central laser light and a vertical shaft are respectively fixedly connected in the middle of the upper and lower ends of the auxiliary shell, a clockwork 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 clockwork 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, a gear ring is fixedly connected to the outer side of the middle of the rotating shaft, a slider is slidably connected in the middle of the auxiliary shell, the bottom end of the slider is fixedly connected to an adjusting plate, a connecting block is welded and fixed on one side of the adjusting plate, and a second adjusting screw is spirally connected inside the connecting block.

[0005] 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 truncated cone block and the second truncated cone block are coaxial.

[0006] 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.

[0007] 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.

[0008] As a further optimization of the present invention, the adjusting end of the first adjusting screw is exposed outside the adjusting housing, the angle between the first adjusting screw and the upper end surface of the adjusting housing is 90°, and the first adjusting screw and the first truncated cone block have the same axis.

[0009] 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.

[0010] As a further optimization of the present invention, the adjustment plates are all provided with notches, the notches are provided with tooth grooves, the tooth grooves are staggered at both ends of the adjustment plates, and the adjustment plates are meshed with the gear rings through the tooth grooves provided at both ends.

[0011] 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, rotating shafts and gear rings are each 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.

[0012] As a further optimization 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.

[0013] As a further optimized content 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, and prepare to mark the pigs; Step II: Positioning the pigs by the central laser light and the side laser light: During the marking process, firstly, the angle of the side laser light is adjusted according to the length of the pig. During the adjustment process, the second adjusting screw is used to control the movement of the adjusting 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, the central laser light 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. 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 truncated cone block and the second truncated cone block, and then the semi-gear is driven to rotate by the circular gear. During the rotation of the semi-gear, the auxiliary positioning unit is driven to rotate by controlling the 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 spacing between the first truncated cone block and the second truncated cone block. Step III: Control the ventilation switch to turn on and mark the pigs: After accurate irradiation, control the ventilation switch to turn on and mark the pigs through the multi-stage nozzle.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by setting the adjustment unit and the auxiliary positioning unit, during the process of long-distance marking of pigs, the multi-stage nozzle can be aimed at 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; 2. In the present invention, the marker is emitted outside the barn, and the breeder does not need to enter the barn or contact the pigs, which can improve biosafety, reduce biosafety risks, and reduce pig stress. At the same time, it is fast and convenient for one person to mark a pig house, which improves work efficiency and reduces work intensity; 3. In the present invention, in 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. In the process of adjustment, the rotation ratio of the adjustment disk and the circular gear can be adjusted as needed, thereby adjusting as needed to meet the usage requirements of different staff members, effectively improving the overall applicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A in the middle; Figure 3This is a schematic diagram of the structure of the regulating unit of the present invention; Figure 4 This is a schematic diagram of the structure of the auxiliary positioning unit of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of the structure at B in the middle; Figure 6 For the present invention Figure 4 Schematic diagram of the structure at point C in the middle.

[0016] In the picture: 1. Handle; 2. Ventilation switch; 3. Adjustment unit; 31. Adjustment housing; 32. Cavity; 33. First truncated cone block; 34. First adjustment screw; 35. Second truncated cone block; 36. Circular gear; 37. Tensioner; 38. Belt pulley; 39. Connecting shaft; 310. Adjustment disc; 311. V-belt; 4. Half gear; 5. Auxiliary positioning unit; 51. Auxiliary housing; 52. Center laser light; 53. Slider; 54. Adjustment plate; 55. Vertical axis; 56. Spring; 57. Side laser light; 58. Rotating shaft; 59. Gear ring; 510. Connecting block; 511. Second adjustment screw; 6. Control bending rod; 7. Positioning bending plate; 8. Multi-stage nozzle; 9. Connecting soft joint; 10. Fixing plate; 11. Gun body. DETAILED DESCRIPTION

[0017] See also Figure 1-6 , the present invention provides a technical solution: A handheld non-contact long-distance seed selection marking device and a method of using the same, comprising a handle 1, a ventilation switch 2, a multi-stage nozzle 8 and a connecting soft joint 9, wherein the ventilation switch 2 is installed at the upper end of the handle 1, the ventilation switch 2 is connected to a gun body 11, the side of the gun body 11 away from the handle 1 is connected to the multi-stage nozzle 8 through the connecting soft joint 9, a positioning bent plate 7 is installed at the upper end of the multi-stage nozzle 8, the other end of the positioning bent plate 7 is fixedly connected to an auxiliary positioning unit 5, a control bent rod 6 is installed at the other side of the auxiliary positioning unit 5, the other end of the control bent rod 6 is fixedly connected to a half gear 4, and the half gear 4 is installed inside an adjustment unit 3; the adjustment unit 3 comprises an adjustment shell 31, a cavity 32 is provided inside the adjustment shell 31, the upper end of the adjustment shell 31 is spirally connected to a first adjusting screw 34, the bottom end of the first adjusting screw 34 is rotatably connected to a first truncated cone block 33, the lower end of the first truncated cone block 33 is provided with a second truncated cone block 35, the bottom end of the second truncated cone block 35 is welded and fixed to a circular gear 36, the first truncated cone block 33 and the second truncated cone block 33 are connected to the first truncated cone block 35, and the second truncated cone block 35 is welded and fixed to a circular gear 36. A V-belt 311 is installed between the upper and lower ends of the auxiliary housing 51, and the inner side of the other end of the V-belt 311 is rotatably connected to the belt pulley 38. A connecting shaft 39 is fixedly connected in the middle of the belt pulley 38, and the outer side of the lower end of the connecting shaft 39 is fixedly connected to the adjusting disc 310. A tensioner 37 is installed on one side of the V-belt 311; the auxiliary positioning unit 5 includes an auxiliary housing 51, and the middle of the upper and lower ends of the auxiliary housing 51 are respectively fixedly connected with a central laser lamp 52 and a vertical shaft 55, a spring spring 56 is installed on the outer side of the lower end of the vertical shaft 55, and the vertical shaft 55 is rotatably connected to the fixed plate 10 through the spring spring 56, and side laser lamps 57 are installed on the upper sides of both ends of the auxiliary housing 51, and the bottom end of the side laser lamp 57 is fixedly connected to a rotating shaft 58, and the middle outer side of the rotating shaft 58 is fixedly connected to a gear ring 59, a slider 53 is slidably connected to the middle of the auxiliary housing 51, and the bottom end of the slider 53 is fixedly connected to an adjusting plate 54, and a connecting block 510 is welded and fixed to one side of the adjusting plate 54, and a second adjusting screw 511 is spirally connected inside the connecting block 510.

[0018] As a further technical solution for implementing the present invention, the half gear 4 and the welding point between the control curved 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. Through the above arrangement, the control curved rod 6 can be driven by the half gear 4 to rotate stably; As a technical solution for further implementation of this scheme, a round shaft is installed between the second truncated cone block 35 and the round gear 36, the bottom end of the round shaft is rotatably connected to the adjustment housing 31, the top end of the round shaft is exposed at the upper end of the second truncated cone block 35, and the position where the top end of the round shaft is exposed at the upper end of the second truncated cone block 35 is slidably connected to the first truncated cone block 33. Through the above arrangement, it can be ensured that the first truncated cone block 33 and the second truncated cone block 35 always limit the V-belt 311; As a technical solution for further implementation of this scheme, the top and bottom ends of the connecting shaft 39 are both rotatably connected to the adjusting housing 31, the fixed end of the tensioner 37 is fixedly connected to the inner wall of the cavity 32, one side of the adjusting disc 310 is exposed outside the adjusting housing 31, and the bottom end of the adjusting housing 31 is fixedly connected to the gun body 11. Through the above arrangement, the V-belt 311 can be always kept in a taut state through the tensioner 37. As a further technical solution of the present invention, 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°, the first adjusting screw 34 and the first truncated cone block 33 are coaxial, and the spacing between the first truncated cone block 33 and the second truncated cone block 35 can be adjusted by the above arrangement; As a further technical solution of 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; As a further technical solution for implementing this solution, the adjustment plates 54 are provided with notches, and tooth grooves are provided inside the notches. The tooth grooves are staggered at both ends of the adjustment plates 54. The adjustment plates 54 are meshed with the gear rings 59 through the tooth grooves provided at both ends. Through the above arrangement, the two side laser lamps 57 can be adjusted at the same time to perform synchronous angle adjustment. As a technical solution for further implementation of 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 gear rings 59 are provided, the rotating shaft 58 is rotatably connected to the auxiliary housing 51, and the gear ring 59 and the adjustment plate 54 are arranged on the same horizontal plane. Through the above arrangement, the adjustment plate 54 can be stably adjusted by the second adjustment screw 511; As a technical solution for further implementation of this solution, 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 is welded and fixed to the control bending rod 6. Through the above arrangement, the stability of the entire device during use can be further improved. As a technical solution for further implementation of this scheme, 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, after the filling is completed, using an air pump and a hose to directly connect the equipment for ventilation, ready to mark the pigs; Step II: Positioning the pigs by the central laser light 52 and the side laser light 57: During the marking process, firstly, the angle of the side laser light 57 is adjusted according to the length of the pig. During the adjustment process, the second adjusting screw 511 is used to control the movement of the adjusting 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 central position is further determined by the irradiation of the two side laser lights 57. The irradiation point is adjusted by the adjusting unit 3. During the adjustment process, the adjustment unit 3 is rotated to adjust the position. The disc 310 rotates. During the rotation of the adjustment 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 realizing the irradiation angle deviation of the center laser light 52 and the side laser light 57. During the adjustment process, the rotation ratio of the adjustment disc 310 and the circular gear 36 can be adjusted by controlling the spacing 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.

[0019] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

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 at 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 a multi-stage nozzle (8) via a connecting soft joint (9). A positioning bent plate (7) is installed at 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), and the half gear (4) is installed inside the adjustment unit (3); The adjustment unit (3) comprises an adjustment housing (31), a cavity (32) is provided inside the adjustment housing (31), the upper end of the adjustment housing (31) is spirally connected to a first adjustment screw (34), the lower end of the first adjustment screw (34) is rotatably connected to a first truncated cone block (33), the lower end of the first truncated cone block (33) is provided with a second truncated cone block (35), the lower end of the second truncated cone block (35) is welded and fixed to a circular gear (36), a V-belt (311) is installed between the first truncated cone block (33) and the second truncated cone 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 adjustment disk (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 a central laser lamp (52) and a vertical shaft (55) are respectively fixedly connected in the middle of the upper and lower ends of the auxiliary housing (51), a spring spring (56) is installed on the outer side of the lower end of the vertical shaft (55), and the vertical shaft (55) is rotatably connected to the fixed plate (10) through the spring spring (56), and side laser lamps (57) are installed on the upper sides of both ends of the auxiliary housing (51), and a rotating shaft (58) is fixedly connected at the bottom end of the side laser lamp (57), and a gear ring (59) is fixedly connected at the middle outer side of the rotating shaft (58), and a slider (53) is slidably connected in the middle of the auxiliary housing (51), and an adjustment plate (54) is fixedly connected at the bottom end of the slider (53), and 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 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 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 top end of the second truncated cone block (35); and the position where the top end of the circular shaft is exposed at the top 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 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 adjusting housing (31), the fixed end of the tensioner (37) is fixedly connected to the inner wall of the cavity (32), one side of the adjusting disc (310) is exposed outside the adjusting housing (31), and the bottom end of the adjusting housing (31) is fixedly connected to the gun body (11).

5. A handheld non-contact long-distance seed selection 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 truncated cone block (33) are coaxial.

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

7. A handheld non-contact long-distance seed selection 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) meshes with the gear ring (59) via the tooth grooves provided at both ends.

8. A handheld non-contact long-distance seed selection 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); the second adjusting screw (511) is rotatably connected to the auxiliary housing (51); two of the side laser lights (57), the rotating shaft (58) and the gear ring (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. A handheld non-contact long-distance seed selection 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 long-distance seed selection marking device according to any one of claims 1 to 9, characterized in that: The process 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, and after the filling is completed, using an air pump and a hose to directly connect the equipment for ventilation, and preparing to mark the pigs; Step II: Positioning the pigs by means of the central laser light (52) and the side laser lights (57): During the marking process, firstly, the angle of the side laser lights (57) is adjusted according to the length of the pigs. During the adjustment process, the second adjusting screw (511) is used to control the movement of the adjusting plate (54). During the adjustment process, the side laser lights (57) arranged on both sides will rotate at opposite angles to achieve the adjustment. After the adjustment is completed, the central laser light (52) is controlled to irradiate the middle position of the pigs. During the irradiation process, the central position is further determined by the irradiation of the two side laser lights (57). The irradiation point is adjusted by means of the adjusting unit (3). During the adjustment process, the adjusting disc (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 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 deviation 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 spacing 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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