Invisible code spraying position adjusting mechanism and adjusting method thereof

Abstract

The invention belongs to the technical field of ink-jet printing machines, and particularly relates to an invisible ink-jet printing position adjusting mechanism and an adjusting method thereof. The movable supporting plate is rotationally connected with the supporting base, a first linear motor is vertically installed on one side face, close to the supporting base, of the movable supporting plate, a second linear motor is horizontally installed on a sliding base of the first linear motor, and a sliding table air cylinder perpendicular to the movable supporting plate is installed on a sliding base of the second linear motor; the industrial camera is movably mounted on the side, close to the movable supporting plate, of the supporting base; and the spray head is arranged at the power output end of the sliding table air cylinder, the outer side of the spray head is surrounded by an outer protective shell used for adjusting the environment temperature of the spray head, waveform protrusions are integrally formed on the inner wall of the outer protective shell, and flow guide grooves used for allowing airflow to pass through for cooling are formed between the waveform protrusions. The position of the spray head can be automatically adjusted in the code spraying process, materials and the surface of the spray head are cleaned, the code spraying machine body is kept at the proper working temperature, and the code spraying quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of code printing machine, and particularly relates to a hidden code printing position adjusting mechanism and an adjusting method thereof. BACKGROUND

[0002] With the increasing demand for anti-counterfeiting, hidden UV code printing machines are growing rapidly in the high-end market, especially in the pharmaceutical and food industries. Technology is developing towards intelligence and high precision, and combining with AI and big data to improve traceability. Hidden UV code printing machines use UV curing ink technology to spray hidden ink onto the product surface through a piezoelectric nozzle, forming invisible marks. These marks are invisible under ordinary light and need to be visible under ultraviolet light. The ink usually contains fluorescent substances that emit light when excited by UV light, achieving anti-counterfeiting and information encryption. Generally, industrial-grade piezoelectric nozzles are used, supporting high-speed printing, high resolution, suitable for small characters and complex patterns; mainly applied to high-end packaging, supply chain management and other fields.

[0003] However, there are some problems in the actual application of UV code printing machines, as follows: 1. Generally, the production line only supports the UV code printing machine by a simple support, which makes it impossible to print on the material if the relative position of the material and the UV code printing machine is not accurate during the transmission process, or the printing is incomplete, causing product defects; 2. During use, the nozzle is often blocked by large UV ink pigment particles, environmental dust accumulation or improper cleaning, which not only affects production efficiency, but also is very troublesome. At the same time, dust on the lens and the surface of the material can also affect the printing clarity and wear resistance. If the printing quality is not good enough, it may be damaged due to friction during transportation, affecting product traceability; 3. The UV code printing machine also has poor environmental suitability. Its suitable working temperature is 15-30℃, and working in an environment with too high or too low temperature can easily cause the viscosity of the ink to decrease, resulting in printing with rough edges. However, many factories cannot meet the above temperature requirements, which leads to poor printing quality. SUMMARY

[0004] The purpose of the present application is to provide a hidden code printing position adjusting mechanism and an adjusting method thereof, which can automatically adjust the position of the UV code printing machine nozzle according to the position of the material during the printing process, clean the dust on the surface of the material and the nozzle before printing, and keep the code printing machine body at a suitable working temperature to ensure the printing quality.

[0005] The technical solutions adopted by the present application are as follows: A hidden code printing position adjusting mechanism and an adjusting method thereof, comprising: a support base; A movable support plate is rotationally connected to the support base, a first linear motor is vertically installed on one side of the movable support plate close to the support base, a second linear motor is horizontally installed on the sliding seat of the first linear motor, and a sliding table cylinder perpendicular to the movable support plate is installed on the sliding seat of the second linear motor; An industrial camera is movably installed on one side of the support base close to the movable support plate for monitoring the position of the material; A spray head is arranged on the power output end of the sliding table cylinder, an outer protective shell for adjusting the ambient temperature of the spray head is arranged outside the spray head, wave-shaped protrusions are integrally formed on the inner wall of the outer protective shell, and guide grooves for airflow passing and cooling are formed between the wave-shaped protrusions, an electrode cover is fixedly installed at the top end of the outer protective shell, and a heating mechanism is arranged between the outer protective shell and the electrode cover.

[0006] As a preferred solution, the heating mechanism comprises an inner sealed cavity opened in the outer protective shell and a PTC ceramic heating sheet electrically connected with the electrode cover, a heat storage medium is filled in the inner sealed cavity, the PTC ceramic heating sheet is inserted into the inner sealed cavity for heating the heat storage medium, the heat storage medium is heat-conducting oil or water-based liquid, and a temperature sensor for monitoring the ambient temperature is fixedly installed on the inner wall of the outer protective shell.

[0007] As a preferred solution, a guide cover is fixedly installed between the electrode covers and communicates with the guide grooves, and guide columns integrally formed on the guide cover are embedded in each of the guide grooves.

[0008] As a preferred solution, a cleaning assembly for cleaning the surface of the material is arranged on the side of the movable support plate close to the feeding end, which comprises an air jet pump fixedly installed on the side of the movable support plate, an air guide pipe connected with the air outlet port of the air jet pump, and a gas nozzle installed on the horizontal section of the air guide pipe, and the air guide pipe is fixedly installed on the side of the movable support plate through the installation plate.

[0009] As a preferred solution, a universal hose for supplying airflow is connected to the bottom end of the air guide pipe, the other end of the universal hose communicates with the guide cover to supply airflow to the guide grooves and cool the spray head.

[0010] As a preferred solution, a guide plate is integrally formed at the bottom of the guide groove, and the top surface of the temperature sensor is an uphill surface to guide the airflow to the mirror surface of the spray head for cleaning.

[0011] As a preferred scheme, the bottom surface of the support base is further provided with a cleaning assembly for cleaning the mirror surface of the spray head, which comprises a cleaning disc rotatably connected to the bottom surface of the support base and a direct drive motor fixedly installed in the support base, one end of the cleaning disc is integrally formed with a rotating column directly connected with the power output end of the direct drive motor, a liquid storage cavity is formed in the cleaning disc, and a brush plate is slidably installed on the top surface of the end away from the rotating column, a limiting spring for limiting the position of the brush plate is fixedly installed between the bottom surface of the brush plate and the inner wall of the cleaning disc, and a cotton brush is detachably connected to the top surface of the brush plate.

[0012] As a preferred scheme, the support base is provided with a mounting groove on the side close to the movable support plate, a rudder is fixedly installed on the side wall of the mounting groove for adjusting the monitoring angle of the industrial camera, the industrial camera is fixedly installed on the power output end of the rudder through a U-shaped support, a servo motor is further fixedly installed on the end of the support base close to the movable support plate, and the power output end of the servo motor is drivingly connected with the support shaft of the movable support plate through a shaft coupling to drive the movable support plate to rotate circumferentially to change the printing angle.

[0013] As a preferred scheme, a hand-operated lifting rod is further provided for support, a bottom support disc is fixedly installed at the bottom end of the hand-operated lifting rod, a lifting support connected with the hand-operated lifting rod in a sliding manner is fixedly installed on the side of the support base away from the movable support plate, and the lifting support is fixedly connected with the sliding seat in the hand-operated lifting rod to drive the support base to lift and change the height.

[0014] A method for adjusting the position of a hidden code spraying device, which comprises the following steps: Step one, erect the hidden code position adjustment mechanism above the production line conveyor belt, set the movable support plate perpendicular to the conveyor belt, and adjust it to a specified height; Step two, convey the materials to the monitoring field of the industrial camera through the conveyor belt, collect the position image through the industrial camera, and transmit it to the control system to obtain the position information of the materials on the conveyor belt; Step three, the control system generates a control signal according to the position information of the materials, and transmits it to the movable support plate and the support base, adjusts the circumferential angle of the movable support plate relative to the support base to make it parallel to the edge of the materials, and adjusts the height and position of the spray head in the X, Y and Z three-axis space through the first linear motor, the second linear motor and the sliding table cylinder; Step four, after the nozzle is adjusted to the relative position of the material, the code is sprayed, the outer protective shell adjusts the ambient temperature during the operation of the nozzle, if the ambient temperature is higher than the set threshold, a high-speed airflow is sprayed in the flow guide groove to cool it down, if the ambient temperature is lower than the set threshold, the temperature is raised by the temperature raising mechanism, so that the nozzle is kept at a suitable working temperature.

[0015] The technical effects achieved by the present application are: The present application can adjust the circumferential angle of the nozzle during the printing process by setting the support base in cooperation with the movable support plate, and the first linear motor, the second linear motor and the slide cylinder cooperate to adjust the printing height and position of the nozzle in the X, Y and Z three-axis space, thereby providing four degrees of freedom for the position adjustment of the nozzle, and cooperating with the industrial camera to adjust the nozzle to the appropriate position relative to the material in time to print the code, so that the printed code is clear and complete, and the printing quality is ensured.

[0016] The present application can clean the dust and other impurities on the surface of the material before it enters the printing range of the nozzle by setting the outer protective shell in cooperation with the cleaning assembly, spraying gas through the gas nozzle to clean the dust and other impurities on the surface of the material, and then passing through the universal hose, the flow guide cover and the flow guide groove, and then being sprayed on the surface of the nozzle lens after being guided by the flow guide plate, so that the dust and other impurities are cleaned, the nozzle is not blocked by the dust and other impurities, the printing quality and continuity are ensured, the maintenance frequency is reduced, and the production efficiency is improved.

[0017] The present application can ensure the working temperature of the nozzle in a low temperature environment by setting the outer protective shell, the electrode cover and the temperature sensor in cooperation with the temperature sensor, filling the heat storage medium in the outer protective shell and heating by the PTC ceramic heating sheet, so that the working temperature of the nozzle is ensured in a low temperature environment, and in a high temperature environment, the heat energy on the surface of the nozzle can be quickly removed by using airflow through the flow guide groove, the heat dissipation efficiency is improved, the nozzle is kept at a suitable working temperature for printing, and the occurrence of printing defects is reduced.

[0018] The present application can expand the cleaning disc from the bottom of the lifting support in the case of nozzle pollution and slight blockage by setting the cleaning assembly, cooperate the movable support plate, the first linear motor, the second linear motor and the slide cylinder, and use the special cleaning liquid in the liquid storage cavity to soak the cotton brush by extruding the brush plate and the cotton brush, and the nozzle repeatedly rubs on the cotton brush to clean the surface of the nozzle, avoiding the operation of disassembling and cleaning in the case of slight blockage, greatly reducing the cleaning frequency, and thereby improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the three-dimensional structure of an embodiment of the present application; Figure 2 is another schematic diagram of the three-dimensional structure of an embodiment of the present application; Figure 3 It is a schematic diagram of a partial three-dimensional structure of an embodiment of the present invention; Figure 4 is another schematic diagram of a three-dimensional structure of a part of an embodiment of the present invention; Figure 5 This is a schematic structural diagram of the movable support plate and related components in an embodiment of the present invention; Figure 6 Schematic diagram of the three-dimensional structure of the nozzle and related components in an embodiment of the present invention; Figure 7 is an exploded view of a nozzle and related components according to an embodiment of the present invention; Figure 8 is a top cross-sectional view of a nozzle and related components in an embodiment of the present invention; Figure 9 This invention Figure 8 A magnified view of the part in the middle; Figure 10 1 is a diagram of the expanded state of the cleaning component in an embodiment of the present invention; Figure 11 This invention Figure 10 A top sectional view of Figure 12 This invention Figure 11 A magnified view of the part B in the middle.

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Support base; 11. Mounting slot; 12. Lifting support; 13. Servo motor; 14. Servo; 2. Movable support plate; 21. First linear motor; 22. Second linear motor; 23. Slide cylinder; 24. Slide; 3. Industrial cameras; 4. Nozzle; 41. Outer protective shell; 411. Corrugated protrusion; 412. Guide groove; 413. Inner sealed cavity; 414. PTC ceramic heating plate; 415. Guide plate; 42. Electrode cover; 43. Guide cover; 431. Guide column; 44. Fixed support plate; 45. Temperature sensor; 5. Clean the components; 51. Jet pump; 52. Air guide tube; 53. Gas nozzle; 54. Mounting plate; 55. Universal hose; 6. Clean components; 61. Cleaning plate; 62. Direct drive motor; 63. Liquid storage chamber; 64. Brush plate; 65. Cotton brush; 66. Rotating support; 67. Limit spring; 68. Sealing plug; 7. Hand-cranked lifting rod; 71. Bottom support plate. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following examples. It should be understood that the following text is only used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0022] like Figures 1-12 As shown, an invisible coding position adjustment mechanism includes a support base 1, a movable support plate 2 rotatably connected to the support base 1, an industrial camera 3 movably mounted on one side of the support base 1 close to the movable support plate 2, and a nozzle 4; a first linear motor 21 is vertically mounted on one side of the movable support plate 2 close to the support base 1, and a second linear motor 22 is horizontally mounted on the slide of the first linear motor 21, a slide cylinder 23 perpendicular to the movable support plate 2 is mounted on the slide of the second linear motor 22, and the nozzle 4 is set on the power output end of the slide cylinder 23, the circumferential angle of the nozzle 4 can be adjusted during the printing process, and the first linear motor 21, the second linear motor 22 and the slide cylinder 23 can cooperate with the slide cylinder 23 to adjust the coding height and position of the nozzle 4 in the X, Y and Z three-axis space, thereby providing the nozzle 4 with four-degree-of-freedom position adjustment capability, and cooperating with the industrial camera 3, so that it can be adjusted to a suitable position relative to the material in time for coding, so that the coding is clear and complete, and the printing quality is guaranteed.

[0023] Among them, a servo motor 13 is fixedly installed at one end of the support base 1 close to the movable support plate 2, and the power output end of the servo motor 13 is connected to the support shaft of the movable support plate 2 through a coupling. The servo motor 13 can drive the movable support plate 2 to rotate circumferentially, thereby changing the circumferential angle of printing to meet the printing requirements.

[0024] Secondly, in order to adapt to the production line, in this embodiment, a hand-cranked lifting rod 7 is also provided, and a bottom support plate 71 is fixedly installed at the bottom end thereof, which can provide stable support so that it can remain stable when placed on one side of the production line without shaking and affecting the printing. By fixing a lifting support 12 that is slidably connected to the hand-cranked lifting rod 7 on the side of the support base 1 away from the movable support plate 2, and fixing the lifting support 12 to the slide in the hand-cranked lifting rod 7, the support base 1 can be driven to rise and fall by rotating the rocker to change the placement height of the nozzle 4, thereby adapting to different production lines and greatly adjusting the equipment height according to different printing requirements. Thereafter, the first linear motor 21, the second linear motor 22 and the slide cylinder 23 are used for precise adjustment to ensure the integrity of the printing.

[0025] It should be noted that the industrial camera 3 needs to cooperate with the control system to work together, after the material enters the monitoring interval, the photoelectric sensor triggers the shooting, and the 2D / 3D mode selection is carried out, the plane material extracts the contour feature and monocular positioning, the three-dimensional material needs to scan the structure light and match the point cloud, and then the position coordinates are generated, the control system sends control signals to control the servo motor 13, the first linear motor 21, the second linear motor 22 and the sliding table cylinder 23 according to the position coordinates, and adjusts the position and angle of the spray head 4.

[0026] Referring to the drawings Figure 4 In order to improve the monitoring range and accuracy, the supporting base 1 is provided with a mounting groove 11 on the side close to the movable supporting plate 2, and a rudder 14 for adjusting the monitoring angle of the industrial camera 3 is fixedly installed on the side wall of the mounting groove 11, and the industrial camera 3 is fixedly installed on the power output end of the rudder 14 through a U-shaped support, and the monitoring angle of the industrial camera 3 can be adjusted through the rudder 14, so as to adjust the monitoring range according to different production needs.

[0027] Referring to the drawings Figures 1-3 In order to clean the surface of the material, the movable supporting plate 2 is provided with a cleaning assembly 5 on the side facing the feeding side, which includes a gas jet pump 51 fixedly installed on the side of the movable supporting plate 2, a gas guide pipe 52 connected with the air outlet port of the gas jet pump 51, and a gas nozzle 53 installed on the horizontal section of the gas guide pipe 52, and the gas guide pipe 52 is fixedly installed on the side of the movable supporting plate 2 through the installation plate 54 to ensure its stability, and the gas nozzle 53 is vertically directed to the surface of the conveying belt, so that the gas flow can be blown vertically to the surface of the material to clean the dust and other impurities on the surface to avoid affecting the spray printing and improve the quality of the spray printing.

[0028] Referring to the drawings Figures 4-9 The outer side of the spray head 4 is surrounded by an outer protective shell 41 for adjusting the ambient temperature thereof, and the inner wall of the outer protective shell 41 is integrally formed with a wave-shaped protrusion 411, and a guide groove 412 for airflow passing to cool down is formed between the wave-shaped protrusions 411, a guide plate 415 is integrally formed at the bottom of the guide groove 412, and the top surface of the guide plate 415 is an uphill surface. After the airflow passes through the guide groove 412, it will be sprayed to the mirror surface of the spray head 4 under the guidance of the guide plate 415, so as to clean the impurities and dust on the surface, make the spray printing more clear, and avoid the influence of dust and other impurities.

[0029] Further, the outer protective shell 41 is fixedly installed with a flow guide cover 43 at the top end, and the flow guide cover 43 is integrally formed with a flow guide column 431 embedded in each flow guide groove 412. Meanwhile, the air duct 52 is connected with a universal hose 55 at the bottom end for air supply. By connecting the other end of the universal hose 55 with the flow guide cover 43, air supply can be realized through the flow guide cover 43 and the flow guide column 431 to the flow guide groove 412, so that the mirror surface of the nozzle 4 can be cleaned at the same time of cleaning the surface of the material, ensuring the synchronization of cleaning, and greatly reducing the influence of dust and other impurities on the printing.

[0030] Secondly, the airflow passing through the flow guide groove 412 can quickly take away the heat energy on the surface of the nozzle 4, improve the heat dissipation efficiency, and ensure sufficient heat dissipation of the nozzle 4 in a high-temperature working environment, so that the nozzle 4 can work at an appropriate temperature for printing, reducing the occurrence of printing defects.

[0031] Referring to the accompanying drawings Figures 6-7 In order to ensure the stable work of the nozzle 4 in a low-temperature environment, the outer protective shell 41 is fixedly installed with an electrode cover 42 at the top end, and the outer protective shell 41 is provided with an inner sealing cavity 413. The electrode cover 42 is electrically connected with a PTC ceramic heating sheet 414. By filling the inner sealing cavity 413 with a heat storage medium and inserting the PTC ceramic heating sheet 414 into the inner sealing cavity 413 for heating the heat storage medium, the nozzle 4 can be kept at an appropriate environmental temperature in a low-temperature environment to meet the high-quality printing requirements.

[0032] It should be noted that the heat storage medium is heat-conducting oil or water-based liquid. In this embodiment, water-based liquid is used. In a normal temperature state, the water-based liquid can absorb the heat generated by the nozzle 4 during work, reducing the probability of high temperature. In a low temperature state, the water-based liquid can be heated to keep the nozzle 4 at an appropriate working temperature.

[0033] Secondly, in order to monitor the environmental temperature of the nozzle 4 in the working state, a temperature sensor 45 for monitoring the environmental temperature is fixedly installed on the inner wall of the outer protective shell 41, which can monitor the working temperature of the nozzle 4 in real time, so that when the environmental temperature exceeds a certain threshold, the temperature of the nozzle 4 can be adjusted by starting the related components.

[0034] Referring to the accompanying drawings Figures 5-6 In order to fix the nozzle 4, a matching sliding table 24 is fixedly installed on the power output end of the sliding table cylinder 23, and a fixed support plate 44 is fixedly connected to the top surface of the electrode cover 42 and fixedly connected with the sliding table 24, so that the nozzle 4 can be stably driven.

[0035] Referring to the accompanying drawings Figures 10-12In order to clean the mirror surface of the spray head 4 in time, in the embodiment, the bottom surface of the support base 1 is further provided with a cleaning assembly 6 for cleaning the mirror surface of the spray head 4, which comprises a cleaning disc 61 rotatably connected to the bottom surface of the support base 1 and a direct drive motor 62 fixedly installed in the support base 1. By integrally forming a rotating support 66 at one end of the cleaning disc 61 and directly connecting the rotating support 66 with the power output end of the direct drive motor 62, the cleaning disc 61 can be adjusted by the direct drive motor 62, so that the cleaning disc 61 can be hidden when not in use, and at the same time, the position relationship between the cleaning disc 61 and the spray head 4 can be adjusted in cooperation with the servo motor 13, the first linear motor 21, the second linear motor 22 and the sliding table cylinder 23, so as to achieve the purpose of cleaning. A liquid storage cavity 63 is formed in the cleaning disc 61, and a special cleaning liquid is stored in the cavity. A brush plate 64 is slidably installed on the top surface of the end away from the rotating support 66, and a plurality of liquid outlet holes are uniformly formed on the surface of the brush plate 64 to allow the cleaning liquid to pass through. A limiting spring 67 for limiting the position of the brush plate 64 is fixedly installed between the bottom surface of the brush plate 64 and the inner wall of the cleaning disc 61, and a cotton brush 65 is detachably connected to the top surface of the brush plate 64.

[0036] According to the above structure, during cleaning, the spray head 4 is located directly above the cotton brush 65 by cooperation of the direct drive motor 62, the servo motor 13, the first linear motor 21, the second linear motor 22 and the sliding table cylinder 23. Then, the spray head 4 is driven downward by the first linear motor 21 to abut against the cotton brush 65, so as to push the brush plate 64 downward and press the limiting spring 67, so that the cleaning liquid penetrates the brush plate 64 to soak the cotton brush 65. Then, the spray head 4 and the cotton brush 65 are relatively moved in the same plane by cooperation of the second linear motor 22, the sliding table cylinder 23 and the direct drive motor 62, so as to clean the mirror surface of the spray head 4 by the cotton brush 65. Then, the spray head 4 is reset, and the brush plate 64 and the cotton brush 65 are reset under the action of the rebounding force of the limiting spring 67. The cleaning disc 61 is reset by the direct drive motor 62, and the cleaning operation is completed.

[0037] It should be noted that the detachable mode of the brush plate 64 and the cotton brush 65 can be achieved by magnetic attraction, magic tape or glue, so that the cotton brush 65 can be replaced after being contaminated, so as to ensure the cleanliness of the mirror surface of the spray head 4 and avoid secondary pollution. The top surface of the cleaning disc 61 is provided with a liquid adding hole, so that the cleaning liquid can be added after being used up, and the liquid adding hole is sealed by a sealing plug 68 when not in use.

[0038] Of course, in other embodiments, the cleaning assembly 6 can not be provided, and the selection can be made according to the actual production needs. If necessary, the manual disassembly and cleaning mode is more accurate and the cleaning is more thorough.

[0039] As Figures 1-12As shown, a kind of invisible code position adjustment adjustment method, application invisible code position adjustment mechanism in the embodiment, including the following steps: Step one, by the bottom support disc 71, the equipment is placed on the side of production line, while using hand crank lifting rod 7 to adjust the height of the spray head 4, the spray head 4 is erected in the upper of production line conveyor belt, while the movable support plate 2 is arranged perpendicularly with conveyor belt, and is adjusted to specified height.

[0040] Step two, by the air jet pump 51, the gas jet nozzle 53 is vertically blown to the surface of material through the gas guide pipe 52, and the dust and other impurities on the surface are cleaned to avoid affecting the spray printing, and the gas guide cover 43 is supplied with airflow through the universal hose 55, so that the gas guide cover 43 and the gas guide column 431 are supplied with airflow to the gas guide groove 412, and the mirror surface of the spray head 4 is sprayed downward through the gas guide plate 415, so that the material surface is cleaned while the mirror surface of the spray head 4 is cleaned.

[0041] Step three, the monitoring angle of the industrial camera 3 is adjusted by using the rudder 14 to meet the production requirement, the material is transmitted to the monitoring field of view of the industrial camera 3 by the conveyor belt, the position image is collected by the industrial camera 3 and transmitted to the control system, and the position information of the material on the conveyor belt is obtained; Step four, the control system generates control signal according to the position information of the material, and transmits to servo motor 13, first linear motor 21, second linear motor 22 and slide cylinder 23, the circumferential angle of movable support plate 2 is adjusted relative to support base 1 by using servo motor 13, so that it is parallel to the edge of material, and the code printing height and position of spray head 4 are adjusted in X, Y, Z three-axis space by using first linear motor 21, second linear motor 22 and slide cylinder 23; Step five, after the spray head 4 is adjusted to the relative position of the material, the code is sprayed, and the temperature sensor 45 monitors the working temperature of the spray head 4 in real time during the operation of the spray head 4.

[0042] When the ambient temperature is higher than the set threshold value: Then, the high-speed airflow is sprayed to the gas guide groove 412 through the gas guide cover 43 and the gas guide column 431 by the air jet pump 51 to cool it down. When the ambient temperature is lower than the set threshold value: Then, the heat storage medium in the inner sealed cavity 413 is heated by the PTC ceramic heating sheet 414, and the spray head 4 is kept warm, which can ensure that the spray head 4 is at a suitable ambient temperature in low temperature environment to meet the high quality spray printing requirement; the spray head 4 is kept at a suitable working temperature.

[0043] Step six, when the nozzle 4 needs cleaning, through the direct drive motor 62, servo motor 13, first linear motor 21, second linear motor 22 and slide cylinder 23 cooperation, make the nozzle 4 is located in the cotton brush 65 directly above, then use the first linear motor 21 drive nozzle 4 downward, make it resist cotton brush 65, so as to push down the brush plate 64 and extrude the limit spring 67, make the cleaning liquid through the brush plate 64 soak the cotton brush 65, then use the second linear motor 22, slide cylinder 23 and direct drive motor 62 cooperation, make the nozzle 4 and cotton brush 65 in the same plane relative reciprocating movement, so as to use the cotton brush 65 realize to the nozzle 4 mirror surface cleaning, then reset the nozzle 4, at the same time, the brush plate 64 and cotton brush 65 reset under the action of limit spring 67 rebound force, and use the direct drive motor 62 reset the cleaning disc 61, complete the cleaning work.

[0044] The above only is the preferred embodiment of the present application, it should be pointed out, for the ordinary skilled in the art, without departing from the principles of the present application, can also make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application. The structure, device and operation method not specifically described and explained in the present application, such as no special description and limitation, according to the conventional means in the art are implemented.

Claims

1. A stealth coding position adjustment mechanism, characterized in that: include: Support base (1); A movable support plate (2) is rotatably connected to the support base (1), a first linear motor (21) is vertically mounted on one side of the movable support plate (2) close to the support base (1), a second linear motor (22) is horizontally mounted on the slide of the first linear motor (21), and a slide cylinder (23) perpendicular to the movable support plate (2) is mounted on the slide of the second linear motor (22); An industrial camera (3) is movably mounted on a side of the support base (1) close to the movable support plate (2) and is used to monitor the position of the material; A nozzle (4) is arranged on the power output end of the slide cylinder (23), and the outside of the nozzle (4) is surrounded by an outer protective shell (41) for adjusting its ambient temperature. The inner wall of the outer protective shell (41) is integrally formed with a corrugated protrusion (411), and a guide groove (412) for air flow to pass through and cool down is formed between the corrugated protrusions (411). An electrode cover (42) is fixedly installed on the top of the outer protective shell (41), and a heating mechanism is provided between the outer protective shell (41) and the electrode cover (42).

2. The invisible inkjet coding position adjustment mechanism according to claim 1, characterized in that: The temperature raising mechanism comprises an inner sealed cavity (413) opened in the outer protective shell (41) and a PTC ceramic heating plate (414) electrically connected to the electrode cover (42); the inner sealed cavity (413) is filled with a heat storage medium; the PTC ceramic heating plate (414) is inserted into the inner sealed cavity (413) for heating the heat storage medium; the heat storage medium is heat-conducting oil or a water-based liquid; and a temperature sensor (45) for monitoring the ambient temperature is fixedly mounted on the inner wall of the outer protective shell (41).

3. The invisible inkjet coding position adjustment mechanism according to claim 1, characterized in that: A flow guide cover (43) connected to the flow guide groove (412) is fixedly mounted between the electrode covers (42), and a flow guide column (431) embedded in each of the flow guide grooves (412) is integrally formed on the flow guide cover (43).

4. The invisible inkjet coding position adjustment mechanism according to claim 3, characterized in that: The movable support plate (2) is provided with a cleaning assembly (5) for cleaning the surface of the material on the side facing the feed, which comprises a jet pump (51) fixedly mounted on the side of the movable support plate (2), an air guide pipe (52) connected to the air outlet port of the jet pump (51), and a gas nozzle (53) mounted on the horizontal section of the air guide pipe (52), wherein the air guide pipe (52) is fixedly mounted on the side of the movable support plate (2) by being provided with a mounting plate (54).

5. The invisible inkjet coding position adjustment mechanism according to claim 4, characterized in that: The bottom end of the air guide pipe (52) is connected to a universal hose (55) for supplying airflow, and the other end of the universal hose (55) is connected to the guide cover (43) and leads to the guide groove (412) to supply airflow to cool the nozzle (4).

6. The invisible inkjet coding position adjustment mechanism according to claim 1, characterized in that: A guide plate (415) is integrally formed at the bottom of the guide groove (412), and the top surface of the guide plate (415) is an upward slope surface, so as to guide the airflow to the mirror surface of the nozzle (4) for cleaning.

7. The invisible inkjet coding position adjustment mechanism according to claim 1, characterized in that: The bottom surface of the support base (1) is also provided with a cleaning assembly (6) for cleaning the mirror surface of the nozzle (4), which includes a cleaning disc (61) rotatably connected to the bottom surface of the support base (1) and a direct drive motor (62) fixedly installed in the support base (1), one end of the cleaning disc (61) is integrally formed with a rotating support (66) directly connected to the power output end of the direct drive motor (62), a liquid storage chamber (63) is provided in the cleaning disc (61), and a brush plate (64) is slidably installed on the top surface of one end away from the rotating support (66), a limit spring (67) for limiting the position of the brush plate (64) is fixedly installed between the bottom surface of the brush plate (64) and the inner wall of the cleaning disc (61), and a cotton brush (65) is detachably connected to the top surface of the brush plate (64).

8. The invisible inkjet coding position adjustment mechanism according to claim 1, characterized in that: The support base (1) is provided with a mounting groove (11) on one side thereof close to the movable support plate (2), and a servo (14) for adjusting the monitoring angle of the industrial camera (3) is fixedly mounted on the side wall of the mounting groove (11), and the industrial camera (3) is fixedly mounted on the power output end of the servo (14) through a U-shaped bracket. A servo motor (13) is also fixedly mounted on one end of the support base (1) close to the movable support plate (2), and the power output end of the servo motor (13) is connected to the support shaft of the movable support plate (2) through a coupling to drive the movable support plate (2) to rotate circumferentially to change the printing angle.

9. The invisible inkjet coding position adjustment mechanism according to claim 1, characterized in that: It also includes a hand-cranked lifting rod (7) for support, the bottom end of which is fixedly mounted with a bottom support plate (71), and a lifting support (12) slidably connected to the hand-cranked lifting rod (7) is fixedly mounted on a side of the support base (1) away from the movable support plate (2), and the lifting support (12) is fixedly connected to the slide in the hand-cranked lifting rod (7) to drive the support base (1) to rise and fall to change its height.

10. A method for adjusting the position of invisible inkjet coding, using the invisible inkjet coding position adjustment mechanism according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Install the invisible inkjet coding position adjustment mechanism directly above the conveyor belt of the production line, and simultaneously install the movable support plate (2) vertically across the conveyor belt and adjust it to a specified height; Step 2: The conveyor belt transports the material to the monitoring field of view of the industrial camera (3), and the industrial camera (3) collects the position image and transmits it to the control system to obtain the position information of the material on the conveyor belt; Step 3: The control system generates a control signal based on the position information of the material and transmits it to the space between the movable support plate (2) and the support base (1), adjusts the circumferential angle of the movable support plate (2) relative to the support base (1) so that it is parallel to the edge of the material, and simultaneously uses the first linear motor (21), the second linear motor (22) and the slide cylinder (23) to adjust the coding height and position of the nozzle (4) in the X, Y and Z three-axis space; Step 4: After the nozzle (4) is adjusted to a position relative to the material, the code is sprayed. The outer protective shell (41) adjusts the ambient temperature during the operation of the nozzle (4). If the ambient temperature is higher than the set threshold, a high-speed air flow is sprayed in the guide groove (412) to cool it; if the ambient temperature is lower than the set threshold, the temperature is increased by the heating mechanism; so that the nozzle (4) is maintained at a suitable operating temperature.

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