Emulsion explosive production line online tagging system

Abstract

The invention relates to the field of automatic labeling, in particular to an emulsion explosive production line online tagging system. The on-line coding module is in wireless butt joint with the production management system and the warehouse management system and obtains production enterprise numbers, product types, specifications, production dates accurate to seconds, box codes and bar code sequence information existing in a warehouse from the production management system and the warehouse management system through the data exchange interface. A unique and continuous bar code is compiled according to the information, and the bar code information is sent to an online printing module through a wireless data exchange interface; the online printing module automatically starts and stops the printing process according to the position of a packaging box, automatically peels off a label with a printed bar code and conveys the label to the automatic code pasting module, and therefore the automatic code pasting module is triggered to respond to complete the grabbing action of the label. The automatic code pasting module transfers and attaches the grabbed labels to the surfaces of the packaging boxes; and the whole labeling process is quick, accurate and safe.

Description

Technical Field

[0001] The present invention relates to the field of automatic labeling, and particularly to an online coding system for an emulsion explosive production line. Background Art

[0002] In the circulation link of civil explosive articles, each basic packaging unit must follow strict management specifications and be equipped with an independent and unique barcode label to ensure its traceability and security throughout the supply chain. The barcode of the barcode label carries basic identification information, such as the production enterprise, product category and specification, batch number, production date, etc., to ensure the safety and compliance of civil explosive articles during production, transportation, storage and use. Therefore, the application of independent barcode labels is an important means for the standardization and informatization management of the packaging of civil explosive articles, and is of great significance for improving industry supervision efficiency and preventing safety risks.

[0003] Currently, the labeling work of emulsion explosives is generally achieved manually. Workers hold a labeling machine and complete the printing and pasting of barcodes by single pressing. Although the labeling work is simple to operate and has a relatively low labor intensity, it does not conform to the principle of "unmanned and less manned" in the production workshop of civil explosive articles.

[0004] Therefore, there is an urgent need to develop an online unmanned coding system to achieve unmanned, efficient and accurate coding, enhance the coding efficiency, and relieve the pressure on the personnel in the "less manned" production workshop. Summary of the Invention

[0005] Aiming at the problem that the above-mentioned traditional labeling work of emulsion explosives is mainly completed manually and does not conform to the principle of "unmanned and less manned" in the production workshop of civil explosive articles, the present invention realizes the uniqueness and continuity of the barcodes of emulsion explosive packaging boxes through the cooperation of an online coding module, an online printing module, an automatic labeling module and a detection and identification module, and realizes the generation, output, printing, labeling and review of barcodes, ensuring that the emulsion explosive production line can automatically, efficiently and safely complete the coding work under unmanned conditions. The specific technical solutions are as follows: The present invention provides an online coding system for an emulsion explosive production line, including a conveyor belt for transporting emulsion explosive packaging boxes and a side stand erected on one side of the conveyor belt, and further including an online coding module, an online printing module, an automatic labeling module and a detection and identification module; The online printing module and the automatic labeling module are both installed on the side stand, wherein the online printing module is located above the automatic labeling module and conveys labels to the automatic labeling module arranged parallel to the conveyor belt from top to bottom; The online encoding module is wirelessly connected to the production management system and the warehouse management system respectively, and obtains the production enterprise number, product type, specification, production date accurate to the second, box code and barcode sequence information already existing in the warehouse from the production management system and the warehouse management system respectively through the data exchange interface, and then compiles a unique and continuous barcode based on the above information, and then sends the above barcode information to the online printing module through the wireless data exchange interface; The online printing module automatically starts and stops the printing process according to the position of the packaging box, and automatically peels off the label with the printed barcode and transports it to the automatic label sticking module, thereby triggering the response of the automatic label sticking module to complete the label grabbing action; The automatic labeling module transfers and attaches the captured label to the surface of the packaging box; After the coding is completed, the packaging box will pass through the detection and identification module installed on the conveyor belt during continuous transportation, and the verification and inspection of the attached labels will be completed during the transportation of the packaging box.

[0006] Preferably, the automatic labeling module comprises a parallel bracket and a push arm; the parallel bracket is parallel to the length direction of the conveyor belt, and one end of the parallel bracket is fixed on the side bracket, and the other end is rotatably connected to one end of the push arm through a rotating shaft; a rotating motor is provided at the rotating shaft to drive the push arm to deflect relative to the parallel bracket with the rotating shaft as the center; The other end of the push arm is provided with an attachment platform, on which a plurality of air holes are evenly provided; the air holes are connected to an external air pump through an air pipe provided in the push arm; the air pump controls the attachment platform to grab and release the label through suction and blowing.

[0007] Preferably, an ultrasonic sensor is provided at the center of the attachment platform, and the ultrasonic sensor is used to sense whether there is a label to be attached in front of the attachment platform, and then control the start and stop of the rotating motor and the air pump.

[0008] Preferably, a pressure sensor is also provided on the surface of the attachment platform to determine whether the packaging box conflicts with the attachment platform.

[0009] Preferably, the online printing module comprises a material wheel, a first auxiliary roller, a second auxiliary roller, and a winding wheel rotatably mounted on the side stand; and a printer, a first fixed roller, and a second fixed roller fixedly mounted on the side stand; The blank label paper is rolled onto the material wheel, and the blank label paper is sent out from the material wheel, and passes through the No. 1 auxiliary roller, the No. 2 auxiliary roller, the No. 1 fixed roller, the No. 2 fixed roller, and the No. 2 auxiliary roller in sequence, and finally wound on the winding wheel; the winding wheel can pull the load paper under the drive of the motor, straighten the label paper and realize the supply of blank label paper; The first fixed roller and the second fixed roller flatten the blank label paper vertically in front of the inkjet nozzle of the printer; The plane where the gap between the first fixed roller and the inkjet nozzle of the printer is located is directly in front of the ultrasonic sensor.

[0010] Preferably, the first fixed roller and the second fixed roller have the same size.

[0011] Preferably, the circumference of the first fixed roller is less than the width of a single label.

[0012] Preferably, a position sensor is fixedly installed on one side of the feeding end of the conveyor belt, which is used to sense and detect the position of the packaging box, and trigger the online printing module and the automatic labeling module to start working.

[0013] Preferably, the detection and identification module includes an infrared identification door, and the infrared identification door is erected directly above the discharging end of the conveyor belt.

[0014] Preferably, the detection and identification module further includes a side vision detector fixedly installed on the side stand and a front vision detector fixedly installed on the infrared identification door.

[0015] The remarkable effects of the present invention are as follows: 1. After obtaining the production enterprise number, product type, specification, production date accurate to the second, and automatically generating the barcode sequence for the box code through the data exchange between the online coding module and the production management system, the present invention does not directly output the barcode sequence to the online printing module for printing. Instead, during the process of generating the barcode sequence, the information of the barcode sequence that already exists in the warehouse management system is collected at the same time, and the previously generated barcode sequence is verified in reverse whether it has been used. That is to say, the online coding module can collect the information of both the production management system and the warehouse management system at the same time, and after mutual verification, obtain a barcode sequence that is absolutely impossible to repeat, effectively ensuring the uniqueness and continuity of the barcode; at the same time, when the barcode appears incorrect, it can also be quickly discovered and losses can be minimized in this process of mutual verification.

[0016] 2. Since the traditional emulsion explosive packaging box contains dangerous chemicals and often needs to be stacked during storage, at least two barcode labels are usually pasted on one emulsion explosive packaging box. In this way, even if one of the barcode labels becomes blurred or damaged, the other one can still clearly display the production information of the emulsion explosive; even when one side of the emulsion explosive packaging box is blocked during the stacking process, the other barcode label can still be observed outside the stack; The push arm in the automatic labeling module of the present invention can attach two barcode labels to the front and side of a packing box respectively during the transportation of the packing box by rotating the push arm out of the parallel bracket successively by 90° and 15°. That is to say, the present invention can complete the label attachment on two sides of the packing box during one transportation process of the packing box, which makes the label attachment more efficient and the packed box can well meet the requirements of the above stacking and accidental barcode blurring.

[0017] 3. The present invention uses the first fixed roller and the second fixed roller to straighten and level the label at the inkjet port of the printer, so that the barcode can be clearly sprayed and printed on the label. At the same time, through ingenious layout design and structural design, the plane where the gap between the barcode and the printer is located is exactly at the attachment platform at the free end of the push arm. At this time, when the winding wheel rotates, it will pull the barcode through the first fixed roller. The first fixed roller with a smaller diameter will squeeze on the back of the label paper, so that the label is peeled off from the load paper and extends in front of the ultrasonic sensor, triggering the rotation of the push arm to adsorb and grab the label.

[0018] That is, during one rotation and winding process of the winding wheel, the winding of the load paper, the peeling of the printed label from the load paper, the triggering of the deflection of the push arm, and the replacement of the blank label relative to the inkjet port can be realized, achieving four functions with one action. The continuous printing and grabbing of the label are realized with a very simple structure, transmission path and triggering logic, further ensuring the efficiency of label printing and attachment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the front view of the present invention; Figure 2 is the side view of the present invention; Figure 3 is the schematic diagram of the relative position relationship between the printer and the label of the present invention; Figure 4 is the schematic diagram of the push arm structure of the present invention; In the figure: 1, conveyor belt; 2, side stand; 31, label; 32, load paper; 41, parallel bracket; 42, push arm; 43, rotating shaft; 44, attachment platform; 45, air hole; 46, air pipe; 47, ultrasonic sensor; 51, material wheel; 52, first auxiliary roller; 53, second auxiliary roller; 54, first fixed roller; 55, second fixed roller; 56, winding wheel; 57, printer; 58, inkjet port; 6, position sensor; 71, infrared recognition door; 72, side vision detector; 73, front vision detector. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to deepen the understanding of the present invention, the following will further describe the present invention in detail with reference to the embodiments. These embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.

[0021] As shown Figure 1-2 in the figure, the present invention provides an on-line coding system for an emulsion explosive production line, which includes a conveyor belt 1 for transporting emulsion explosive packaging boxes and a side stand 2 standing on one side of the conveyor belt 1. It also includes an on-line coding module, an on-line printing module, an automatic labeling module and a detection and identification module; Both the on-line printing module and the automatic labeling module are installed on the side stand 2. Among them, the on-line printing module is located above the automatic labeling module and conveys the label 31 to the automatic labeling module arranged parallel to the conveyor belt 1 from top to bottom; The on-line coding module is wirelessly docked with the production management system and the warehouse management system respectively, and obtains the production enterprise number, product type, specification, production date accurate to seconds, box code and the bar code sequence information already existing in the warehouse from the production management system and the warehouse management system respectively through the data exchange interface. Then, according to the above information, a unique and continuous bar code is compiled, and the above bar code information is sent to the on-line printing module through the wireless data exchange interface; The on-line printing module automatically starts and stops the printing process according to the position of the packaging box, and automatically peels off the label 31 with the printed bar code and conveys it to the automatic labeling module, thereby triggering the response of the automatic labeling module to complete the grasping action of the label 31; The automatic labeling module transfers and attaches the grasped label 31 to the surface of the packaging box; After the labeling is completed, the packaging box will pass through the detection and identification module installed on the conveyor belt 1 under the continuous transportation of the conveyor belt 1, and the verification and inspection of the attached label 31 will be completed during the transfer of the packaging box.

[0022] The automatic labeling module includes a parallel bracket 41 and a push arm 42; the parallel bracket 41 is parallel to the length direction of the conveyor belt 1, and one end is fixed on the side stand 2, and the other end is rotatably connected to one end of the push arm 42 through a rotating shaft 43; a rotating motor is arranged at the rotating shaft 43 to drive the push arm 42 to deflect relative to the parallel bracket 41 with the rotating shaft 43 as the center; The other end of the push arm 42 is provided with an attachment platform 44, and a plurality of air holes 45 are uniformly arranged on the attachment platform 44; the air holes 45 are communicated with an external air pump through an air pipe 46 arranged in the push arm 42; the air pump controls the grasping and releasing of the label 31 by the attachment platform 44 through suction and blowing.

[0023] A ultrasonic sensor 47 is arranged at the center of the attachment platform 44, and the ultrasonic sensor 47 is used to sense whether there is a label 31 to be attached in front of the attachment platform 44, and then control the start and stop of the rotating motor and the air pump.

[0024] A pressure sensor is also provided on the surface of the attachment platform 44 to determine whether the packaging box conflicts with the attachment platform 44 .

[0025] The online printing module includes a material wheel 51, a first auxiliary roller 52, a second auxiliary roller 53, and a winding wheel 56 rotatably mounted on the side stand 2; and a printer 57, a first fixed roller 54, and a second fixed roller 55 fixedly mounted on the side stand 2; The blank label 31 paper is rolled onto the material wheel 51, and the blank label 31 paper is sent out from the material wheel 51, and passes through the first auxiliary roller 52, the second auxiliary roller 53, the first fixed roller 54, the second fixed roller 55, the second auxiliary roller 53 in sequence, and finally wound on the winding wheel 56; the winding wheel 56 can pull the load paper 32 under the drive of the motor, straighten the label 31 paper and realize the supply of blank label 31 paper; The first fixed roller 54 and the second fixed roller 55 vertically flatten the blank label 31 paper in front of the inkjet port 58 of the printer 57; The plane where the gap between the No. 1 fixed roller 54 and the inkjet port 58 of the printer 57 is located is located right in front of the ultrasonic sensor 47 .

[0026] The first fixed roller 54 and the second fixed roller 55 have the same size.

[0027] The circumference of the first fixing roller 54 is smaller than the width of a single label 31 .

[0028] A position sensor 6 is fixedly installed on one side of the feeding end of the conveyor belt 1, which is used to sense and detect the position of the packaging box and trigger the online printing module and the automatic coding module to start working.

[0029] The detection and identification module includes an infrared identification door 71 , and the infrared identification door 71 is set up just above the discharge end of the conveyor belt 1 .

[0030] The detection and recognition module also includes a side vision detector 72 fixedly mounted on the side support 2 and a front vision detector 73 fixedly mounted on the infrared recognition door 71 .

[0031] After a number of emulsion explosives are neatly placed in a packing box, sealed and packed, under the transfer of the conveyor transportation system, the packing box officially enters the conveyor belt 1 in the coding stage. When the position sensor 6 fixedly installed on one side of the feeding end of the conveyor belt 1 detects and senses the packing box, it will quickly trigger the online coding module to work, enabling it to obtain the production enterprise number, product type, specification, production date accurate to the second, box code, and barcode sequence information already existing in the warehouse from the production management system and the warehouse management system. Then, a unique and continuous barcode is compiled based on the above information. It should be noted that the present invention does not solely rely on the data of either the production management system or the warehouse management system to generate the barcode, but comprehensively combines the data of both parties, which can enable the data of both parties to verify each other. After verification, the above barcode information is sent to the printer 57 in the online printing module through the wireless data exchange interface, thus completing the generation process of the barcode and effectively ensuring the uniqueness and continuity of the barcode; at the same time, when the barcode is incorrect, it can also be quickly discovered during this mutual verification process to stop losses in a timely manner.

[0032] As Figure 3-4 shown, after receiving the barcode information, the printer 57 prints the barcode on the surface of the label 31 facing the inkjet port 58 through the inkjet port 58, thus completing the printing process of the barcode on the label 31.

[0033] At this time, the take-up reel 56 can rotate under the drive of the motor, and then wind the load paper 32 after the label 31 has been peeled off onto the take-up reel 56 through the second fixed roller 55. Among them, the rotation of the take-up reel 56 can not only wind the load paper 32, but also at least have the following functions: First, the rotation and winding of the take-up reel 56 can pull the blank label 31 to be released from the material wheel 51, and make the blank label 31 move towards the first fixed roller 54 successively under the guidance of the first auxiliary roller 52 and the second auxiliary roller 53, so that the label 31 on the side of the first fixed roller 54 facing the inkjet port 58 can be replaced. That is, the replacement of the blank label 31 is completed; Second, while the blank label 31 is being replaced, it also means that the label 31 that has been printed with the barcode will move towards the second fixed roller 55 and the take-up reel 56 over the first fixed roller 54. However, due to the small diameter of the first fixed roller 54, during the dragging process of the label 31, the first fixed roller 54 on the back of the label 31 will apply a continuous bending force to the label 31 through the load paper 32, so that the label 31 will naturally warp away from the load paper 32 under the action of this bending force. In this process, by limiting the circumference of the first fixed roller 54 to be always smaller than the width of the label 31, it can be ensured that the first fixed roller 54 can apply a continuous and large bending angle bending force to the same label 31, fully ensuring that the label 31 can naturally warp. That is, the preliminary peeling of the label 31 with the barcode printed on it is completed.

[0034] Thirdly, since the plane where the gap between the first fixed roller 54 and the inkjet port 58 is located is directly above the attachment platform 44 on the push arm 42, after the label 31 with the barcode printed thereon naturally warps, it will naturally drop to the front of the attachment platform 44 and block the ultrasonic sensor 47 on the attachment platform 44. At this time, the ultrasonic sensor 47 will simultaneously feed back the detection information to the air pump and the rotation motor. The former immediately sucks air and transmits the negative pressure through the external pipeline, the air pipe 46, and the air hole 45 to the front of the attachment platform 44 in sequence, so that the label 31 extending to the front of the attachment platform 44 is adsorbed onto the surface of the attachment platform 44 and completely separated from the surface of the load paper 32. The latter starts and drives the push arm 42 to deflect 90° around the rotation axis 43 towards the conveyor belt 1. That is, the feeding and label pasting operations of the label 31 with the barcode printed thereon are triggered.

[0035] It can be seen that through the ingenious layout design and structural design of the present invention, during the simple process of winding the load paper 32, it is also possible to simultaneously achieve the replacement of the label 31 opposite the inkjet port 58, the peeling of the label 31 with the barcode printed thereon from the load paper 32, and the triggering of the label pasting operation, achieving four functions with one action. With an extremely simple structure, transmission path, and triggering logic, the continuous printing and grasping of the label 31 are realized, further ensuring the high efficiency of the printing and pasting of the label 31.

[0036] After the generation and printing of the above barcodes are completed, at this time, the packaging box just moves to a position close to the push arm 42 under the continuous transportation of the conveyor belt 1. As mentioned before, the push arm 42 has deflected 90° due to the drive of the rotation motor and is now just suspended above the conveyor belt 1, that is, on the inevitable path of the packaging box. When the packaging box contacts and presses against the attachment platform 44 at the free end of the push arm 42, this pressure will be immediately captured by the pressure sensor installed on the surface of the attachment platform 44. At this time, the pressure sensor will immediately trigger the air pump to blow air. The positive pressure generated by the air pump blowing air will be transmitted to the front of the attachment platform 44 through the external pipeline, the air pipe 46, and the air hole 45 in sequence, and then blow the label 31 with the barcode printed thereon originally adsorbed on the surface of the attachment platform 44 towards the front of the packaging box. The label 31 is evenly attached to the front of the packaging box due to the blowing of the air flow. After the blowing process lasts for 100 ms, the push arm 42 immediately deflects and resets in the reverse direction under the drive of the rotation motor to avoid blocking the progress of the packaging box.

[0037] After reset, the push arm 42 reattaches to the horizontal bracket and waits for the rewinding wheel 56 to rewind again, and then sends the label 31 printed with the same barcode to the front of the attachment platform 44 again. The push arm 42 will repeat the above triggering process, but the only difference is that at this time, the push arm 42 will only rotate 15° under the drive of the rotating motor. After deflection, the attachment platform 44 will contact the side wall of the packaging box during its movement, and the label 31 will be attached to the side of the packaging box again through the blowing action of the air pump. Then the push arm 42 quickly resets, and thus the double-sided code sticking to the packaging box is completed in a cycle.

[0038] The packaging box with double-sided code sticking will greatly reduce the probability of losing the product information of the whole box of emulsion explosives due to damage or blurring of a certain label 31. At the same time, it also makes it more likely that the label 31 is exposed on the outer surface of the stack during the stacking process, and the product information of the emulsion explosives in the stack can be obtained more easily without moving the packaging box.

[0039] In addition, it can also be noted that whether the label 31 is removed or attached in the present invention is achieved by blowing or sucking air flow. This contact method is gentler and more friendly to the soft label 31 with undried ink. On the one hand, it can avoid scratches and wrinkles on the printing surface of the label 31 caused by hard objects, resulting in barcode damage or unclear situation; on the other hand, during the blowing or sucking process, the air flow on the surface of the label 31 can be accelerated, so that the ink on the printing surface of the label 31 can dry quickly and avoid blurring.

[0040] Finally, the packaging box with double-sided code sticking will continue to move forward under the transportation of the conveyor belt 1. During the forward movement, the side label 31 of the packaging box will pass by the side vision detector 72 installed on the same side of the conveyor belt 1; the front label 31 of the packaging box, that is, the front label, will be exposed within the field of view of the front vision detector 73. The side vision detector 72 and the front vision detector 73 will identify and verify the content and clarity of the barcode on the label 31. At the same time, before the packaging box leaves the conveyor belt 1, it will also pass through the infrared identification door 71 for three-sided infrared scanning of the packaging box body. Whenever the infrared rays are discontinuous, it means that the box structure is incomplete, not packaged or the above vision detection result is incorrect, and the conveyor belt 1 will introduce the problematic packaging box into the recycling line. Thus, it provides an insurance for the code assignment and sticking of the packaging box label 31 and the packaging of the packaging box, fully ensuring the accuracy and safety of one code for one box.

[0041] In summary, without the need for the conveyor belt 1 to stop, the present invention can achieve the attachment of the labels 31 on the front and side of the packing box through two deflections of the push arm 42. During the whole process, the online coding module ensures the accuracy, uniqueness, and continuity of barcode generation through the mutual verification of multiple information sources such as the production management system and the warehouse management system; during the winding process of the primary load paper 32, the peeling of the printed label 31 on the load paper 32, the triggering of the deflection of the push arm 42, and the replacement of the blank label 31 relative to the inkjet port 58 can be synchronously achieved, achieving four purposes at once and ensuring the high efficiency of label 31 printing and attachment; through the fitting detection and verification of the side vision detector 72 and the front vision detector 73, the integrity and accuracy of label 31 attachment are ensured. It is precisely the mutual cooperation of the accurate code generation of the online coding module, the rapid code printing of the online printing module, the rapid code attachment of the automatic code attachment module, and the meticulous code verification of the detection and recognition module that can jointly ensure the high efficiency and accuracy of the online coding system of the entire emulsion explosive production line.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An online coding system for an emulsion explosive production line, comprising a conveyor belt (1) for transporting emulsion explosive packaging boxes and a side support (2) standing on one side of the conveyor belt (1), characterized in that: It also includes an online encoding module, an online printing module, an automatic coding module and a detection and recognition module; The online printing module and the automatic labeling module are both mounted on a side support (2), wherein the online printing module is located above the automatic labeling module and conveys labels (31) from top to bottom to the automatic labeling module arranged parallel to the conveyor belt (1); The online encoding module is wirelessly connected to the production management system and the warehouse management system respectively, and obtains the production enterprise number, product type, specification, production date accurate to the second, box code and barcode sequence information already existing in the warehouse from the production management system and the warehouse management system respectively through the data exchange interface, and then compiles a unique and continuous barcode based on the above information, and then sends the above barcode information to the online printing module through the wireless data exchange interface; The online printing module automatically starts and stops the printing process according to the position of the packaging box, and automatically peels off the label (31) with the barcode printed on it and transports it to the automatic label sticking module, thereby triggering the response of the automatic label sticking module to complete the grabbing action of the label (31); The automatic labeling module transfers and attaches the captured label (31) to the surface of the packaging box; The packaging box after the coding is completed will pass through the detection and identification module installed on the conveyor belt (1) during the continuous transportation of the conveyor belt (1), and the verification and inspection of the attached label (31) will be completed during the transportation of the packaging box.

2. The online coding system for emulsion explosive production line according to claim 1, characterized in that: The automatic code sticking module comprises a parallel bracket (41) and a push arm (42); the parallel bracket (41) is parallel to the length direction of the conveyor belt (1), one end of which is fixed on the side bracket (2), and the other end is rotatably connected to one end of the push arm (42) via a rotating shaft (43); a rotating motor is arranged at the rotating shaft (43) to drive the push arm (42) to deflect relative to the parallel bracket (41) with the rotating shaft (43) as the center of the circle; The other end of the push arm (42) is provided with an attachment platform (44), on which a plurality of air holes (45) are evenly provided; the air holes (45) are connected to an external air pump through an air pipe (46) provided in the push arm (42); the air pump controls the attachment platform (44) to grasp and release the label (31) by suction and blowing.

3. The online coding system for emulsion explosive production line according to claim 2, characterized in that: An ultrasonic sensor (47) is arranged at the center of the attachment platform (44), and the ultrasonic sensor (47) is used to sense whether there is a label (31) to be attached in front of the attachment platform (44), and then control the start and stop of the rotating motor and the air pump.

4. The online coding system for emulsion explosive production line according to claim 3 is characterized by: A pressure sensor is also provided on the surface of the attachment platform (44) for determining whether the packaging box is in conflict with the attachment platform (44).

5. The online coding system for emulsion explosive production line according to claim 1 is characterized by: The online printing module comprises a material wheel (51), a first auxiliary roller (52), a second auxiliary roller (53), and a winding wheel (56) rotatably mounted on the side stand (2); and a printer (57), a first fixed roller (54), and a second fixed roller (55) fixedly mounted on the side stand (2); The blank label (31) paper is rolled onto the material wheel (51), and the blank label (31) paper is sent out from the material wheel (51), and passes through the first auxiliary roller (52), the second auxiliary roller (53), the first fixed roller (54), the second fixed roller (55), and the second auxiliary roller (53) in sequence, and finally is wound on the winding wheel (56); the winding wheel (56) can pull the load paper (32) under the drive of the motor, straighten the label (31) paper and realize the supply of the blank label (31) paper; The first fixed roller (54) and the second fixed roller (55) vertically flatten the blank label (31) paper in front of the inkjet port (58) of the printer (57); The plane where the gap between the No. 1 fixed roller (54) and the ink jet port (58) of the printer (57) is located is located right in front of the ultrasonic sensor (47).

6. The online coding system for emulsion explosive production line according to claim 1, characterized in that: The first fixed roller (54) and the second fixed roller (55) have the same size.

7. The online coding system for emulsion explosive production line according to claim 1, characterized in that: The circumference of the first fixed roller (54) is smaller than the width of a single label (31).

8. The online coding system for emulsion explosive production line according to claim 1, characterized in that: A position sensor (6) is fixedly installed on one side of the feeding end of the conveyor belt (1) for sensing and detecting the position of the packaging box and triggering the online printing module and the automatic coding module to start working.

9. The online coding system for emulsion explosive production line according to claim 1, characterized in that: The detection and identification module comprises an infrared identification door (71), and the infrared identification door (71) is installed just above the discharge end of the conveyor belt (1).

10. The online coding system for emulsion explosive production line according to claim 9, characterized in that: The detection and identification module also includes a side vision detector (72) fixedly mounted on the side stand bracket (2) and a front vision detector (73) fixedly mounted on the infrared identification door (71).

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