A PE film hidden anti-counterfeiting code inkjet device and inkjet process

Abstract

The present invention relates to the technical field of inkjet coding, and specifically, to a PE film hidden anti-counterfeiting code inkjet device and inkjet coding process. It includes a device body, which includes a conveyor belt for placing PE packaging film products, and a detection frame is provided at the conveyor belt; a coding mechanism for anti-counterfeiting is provided at the detection frame, and the coding mechanism includes a nozzle that can move up and down and an ink cartridge for storing colorless ink; a transmission mechanism is provided between the nozzle and the ink cartridge, and the transmission mechanism includes a stirring rod for mixing the colorless ink in the ink cartridge. Through the present invention, the inside of the ink cartridge is mixed and stirred by the stirring rod to prevent the precipitation of the colorless ink inside the ink cartridge, improve the uniformity of the nozzle spraying, and improve the overall spraying quality of the device; wherein, the stirring rod is driven by the movement of the nozzle, and the ink cartridge is automatically stirred during the coding process without the need for additional driving force, thereby improving the convenience of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of coding, and in particular to a PE film hidden anti-counterfeiting code coding device and a coding process. Background Art

[0002] PE film, or polyethylene film, is widely used in many fields due to its many excellent properties. PE material is a common choice for product packaging film due to its good flexibility, cost-effectiveness and recyclability. Some packaging films wrap products with multiple highly different product variants.

[0003] Anti-counterfeiting coding is a technology used for product identification. It achieves anti-counterfeiting purposes by printing special codes, patterns or texts on the product or its packaging. To enhance the anti-counterfeiting effect of the product, some companies will add a displacement mechanism to the spray gun so that the coding position of each film is not in the same place. At the same time, colorless ink with a different reflectivity from the PE film is used. The anti-counterfeiting code cannot be seen directly after coding, preventing criminals from cutting the anti-counterfeiting code in batches to mix goods.

[0004] Colorless ink contains other ingredients, such as additives, stabilizers, solvents, etc. After being left standing for a long time, these ingredients will gradually separate or aggregate due to factors such as gravity, chemical reactions or temperature changes, causing the ink to become layered or precipitated, resulting in inconsistent color, concentration or viscosity of the sprayed ink, which in turn affects the printing quality and makes the printed text or patterns blurred and unclear. Summary of the invention

[0005] The invention provides a PE film hidden anti-counterfeiting code spraying device, which can overcome the defect of uneven colorless ink in the prior art.

[0006] A PE film hidden anti-counterfeiting code inkjet device according to the present invention comprises a device body, the device body comprises a conveyor belt for placing PE packaging film products, a detection frame is provided at the conveyor belt; a coding mechanism for anti-counterfeiting is provided at the detection frame, the coding mechanism comprises a nozzle that can move up and down and an ink cartridge for storing colorless ink; a transmission mechanism is provided between the nozzle and the ink cartridge, the transmission mechanism comprises a stirring rod for mixing the colorless ink in the ink cartridge.

[0007] The present invention uses a stirring rod to mix and stir the inside of the ink cartridge, thereby preventing the colorless ink inside the ink cartridge from settling, improving the uniformity of the spraying of the nozzle, and improving the overall spraying quality of the device;

[0008] The stirring rod is driven by the movement of the nozzle, and no additional driving force is required. The ink cartridge is automatically stirred during the coding process, which improves the convenience of using the device.

[0009] Preferably, a detection channel for the PE packaging film product to pass through is formed in the middle of the detection frame, and the coding mechanism also includes a raised frame arranged on the conveyor belt at both sides of the detection channel, and an inclined surface is provided at the bottom of the raised frame, and the inclined surface is in sliding contact with the PE packaging film product, and the thickness of the inclined surface gradually increases from both ends to the middle, and a transmission plate connected to the nozzle is provided at the raised frame.

[0010] In the present invention, the thrust generated by the PE packaging film product itself passing through is used to move the nozzle up and down to provide impetus for ink cartridge cleaning. At the same time, the raised frame can unify the height of the nozzle of the device body when facing PE packaging film products of different sizes, further improving the quality of the nozzle spraying on the surface of the PE packaging film product.

[0011] Preferably, the transmission mechanism also includes a concave seat arranged on the outside of the nozzle, a transmission member is rotatably connected to the middle of the concave seat, a transmission groove is opened on the outer wall of the ink cartridge, the stirring rod slides in the transmission groove, a rotating hole is opened at the end of the stirring rod away from the ink cartridge, and the transmission member is rotatably connected to the stirring rod through the rotating hole.

[0012] In the present invention, the transmission member is provided to convert the force of the upward and downward movement of the nozzle into a driving force for stirring the ink cartridge, so that the ink cartridge can be evenly mixed while the nozzle moves.

[0013] Preferably, the transmission mechanism further comprises a stirring plate arranged at the stirring rod at one end of the ink cartridge, and a flow hole is opened at the stirring plate.

[0014] In the present invention, the colorless ink is pushed, squeezed and reflowed, thereby improving the stirring effect of the stirring rod on the colorless ink in the ink cartridge, and further improving the uniformity of the colorless ink mixing.

[0015] Preferably, a movable platform is provided on the upper part of the detection frame, a cavity is formed in the movable platform, the nozzle slides in the cavity, the raised frame is located in the middle of one side of the nozzle and a center groove is provided, the transmission plate is located inside the center groove, the nozzle is located at the concave seat where a concave frame is fixed, the transmission plate is fixed on both sides of the concave seat, and the concave frame is slidably connected to the concave seat and the transmission plate.

[0016] In the present invention, the concave frame and the concave seat can enable the nozzle to move horizontally to spray codes at different positions without affecting the up and down transmission of the nozzle by the transmission mechanism, thereby improving the practicability of the device.

[0017] Preferably, an inclined groove is provided at the inclined surface, a detachable inclined frame is provided in the inclined groove, a placement groove is provided in the middle of the inclined frame, and a plurality of rolling columns in contact with the PE packaging film product are equidistantly provided in the placement groove.

[0018] In the present invention, the rolling column is arranged to contact with the rolling column on the tilting frame, thereby reducing the friction of the PE packaging film product when it moves on the inclined surface, and preventing the PE packaging film from being damaged during the movement of the PE packaging film product.

[0019] Preferably, the tilting frame has placement holes at both ends of the placement groove, bearing seats are provided at both ends of the rolling column, the bearing seats are located inside the placement holes, a blocking plate is provided on the outer wall of the rolling column, and a blocking block is provided on the blocking plate that fits the surface of the rolling column.

[0020] In the present invention, the barrier blocks on the barrier plate are used to protect the surface of the rolling column, so as to prevent the protruding PE packaging film left in the PE packaging film product due to the manufacturing process or design from being rolled into the rolling columns, thereby improving the sliding fluidity of the rolling column when facing the uneven PE packaging film product.

[0021] Preferably, sleeves are fixedly connected at both ends of the barrier block, the sleeves include positioning holes for placing the bearing seats, and the outer wall of the sleeves are engraved with threads, which are threadedly connected to the inner wall of the placement groove.

[0022] In the present invention, the sleeve can limit and fix the bearing seat again while limiting and fixing the barrier block, thereby improving the smoothness of the overall sliding of the tilting frame on the PE packaging film product.

[0023] Preferably, the blocking plate forms a calibration arc near one end of the placement slot, and the tilting frame is equidistantly provided with calibration grooves that match the calibration arc in the extension direction of the placement slot. The number of thread coils is an integer. When the calibration arc matches the calibration groove, the blocking block is located in the middle of the right side of the rolling column.

[0024] In the present invention, through the calibration groove and the calibration arc, when the staff installs the barrier plate, the barrier block is located in the middle of the right side of the rolling column, which not only ensures the barrier effect of the barrier block on the PE packaging film but also facilitates the staff to install it.

[0025] In addition, the present invention also provides a PE film hidden anti-counterfeiting code spraying process, which includes the following steps:

[0026] S1: Put the colorless ink into the ink cartridge;

[0027] S2: The conveyor belt will send the PE packaging film product to the detection frame part, and the PE packaging film product will lift the raised frame along the inclined direction of the inclined surface, thereby lifting the nozzle;

[0028] S3: The transmission mechanism is driven to rotate during the nozzle lifting process, so that the stirring rod slides and stirs the colorless ink inside the ink cartridge;

[0029] S4: The stirred colorless ink is pumped into the nozzle through a hose pump connected inside the ink cartridge, and anti-counterfeiting codes are sprayed on different positions on the surface of the PE packaging film product through a mobile platform.

[0030] The PE packaging film product of the present invention can move the nozzle, thereby sliding and stirring the colorless ink inside the ink cartridge, making the ink used by the nozzle more uniform and improving the coding quality of the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the device body in Example 1;

[0032] Figure 2 This is a schematic diagram of the main view of the detection frame in Example 1;

[0033] Figure 3 This is a schematic diagram of the detection frame in Example 1 when viewed from above;

[0034] Figure 4 is a schematic diagram of a side cross-sectional view of the mobile platform in Example 1;

[0035] Figure 5 For Example 1 Figure 4 Schematic diagram of the enlarged structure at B in the middle;

[0036] Figure 6 For Example 1 Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0037] Figure 7 is a schematic diagram of the raised frame in Example 1;

[0038] Figure 8 is a schematic diagram of the tilting frame in Example 1;

[0039] Fig. 9 It is a schematic diagram of placing holes in Example 1;

[0040] Fig.10 Schematic diagram of the barrier plate in Example 1. DETAILED DESCRIPTION

[0041] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0042] Example 1

[0043] like Figure 1-5As shown, this embodiment provides a PE film hidden anti-counterfeiting code inkjet device, which includes a device body 100, the device body 100 includes a conveyor belt 110 for placing PE packaging film products 500, and a detection frame 130 is provided at the conveyor belt 110; a coding mechanism 120 for anti-counterfeiting is provided at the detection frame 130, and the coding mechanism 120 includes a nozzle 310 that can move up and down and an ink cartridge 320 for storing colorless ink; a transmission mechanism 330 is provided between the nozzle 310 and the ink cartridge 320, and the transmission mechanism 330 includes a stirring rod 510 for mixing the colorless ink in the ink cartridge 320.

[0044] In this embodiment, the PE packaging film product 500 is placed on the conveyor belt 110, and the coding mechanism 120 on the detection frame 130 drives the nozzle 310 to rise, so that the colorless ink pumped into the nozzle 310 through the ink cartridge 320 is sprayed on the surface of the PE packaging film product 500. After the nozzle 310 is sprayed, the conveyor belt 110 transmits the sprayed PE packaging film product 500 out of the detection frame 130, and the coding mechanism 120 drives the nozzle 310 to descend. During the movement of the nozzle 310, the transmission mechanism 330 drives the stirring rod 510 to slide back and forth in the ink cartridge 320 to stir and mix the colorless ink in the ink cartridge 320. The stirring rod 510 is used to mix and stir the inside of the ink cartridge 320 to prevent the colorless ink in the ink cartridge 320 from precipitating, thereby improving the uniformity of the spraying of the nozzle 310 and improving the overall spraying quality of the device.

[0045] The stirring rod 510 is driven by the movement of the nozzle 310 without the need for additional driving force, and the ink cartridge 320 is automatically stirred during the coding process, thereby improving the convenience of using the device.

[0046] Combination Figure 1-3 As shown, in this embodiment, a detection channel 140 for the PE packaging film product 500 to pass through is formed in the middle of the detection frame 130, and the coding mechanism 120 also includes a raised frame 340 arranged on the conveyor belt 110 and located on both sides of the detection channel 140. An inclined surface 360 ​​is provided at the bottom of the raised frame 340. The inclined surface 360 ​​is in sliding contact with the PE packaging film product 500, and the thickness of the inclined surface 360 ​​gradually increases from both ends to the middle. A transmission plate 350 connected to the nozzle 310 is provided at the raised frame 340.

[0047] In this embodiment, the PE packaging film product 500 is sent into the detection channel 140 through the conveyor belt 110, and the PE packaging film product 500 will contact the inclined surface 360. The conveyor belt 110 will move the PE packaging film product 500 during the contact process. During the movement of the PE packaging film product 500, it will slide from the edge along the inclined surface 360 ​​into the middle position of the raised frame 340. At the same time, the thickness from the end to the middle of the inclined surface 360 ​​will continue to increase, thereby lifting and moving the raised frame 340 as a whole. During the movement of the raised frame 340, the transmission plate 350 drives the nozzle 310 to move upward. When the PE packaging film product 500 is located at the center of the raised frame 340, the raised frame 340 will no longer be lifted, and the nozzle 310 will The surface of the PE packaging film product 500 is sprayed with code. After the coding is completed, the conveyor belt 110 will drive the PE packaging film product 500 to be transmitted out from the inside of the detection channel 140. During the transmission process, the PE packaging film product 500 will contact the inclined surface 360 ​​at the other end of the raised frame 340. The thickness of the inclined surface 360 ​​from the middle to the end continues to decrease, thereby lowering the nozzle 310. The thrust generated by the PE packaging film product 500 itself when passing through can move the nozzle 310 up and down to provide a push for cleaning the ink cartridge 320. At the same time, the raised frame 340 can unify the height of the nozzle 310 of the device body 100 when facing PE packaging film products 500 of different sizes, thereby further improving the quality of the nozzle 310 spraying the code on the surface of the PE packaging film product 500.

[0048] Combination Figure 3-6 As shown, in this embodiment, the transmission mechanism 330 also includes a concave seat 410 arranged on the outside of the nozzle 310, and a transmission member 420 is rotatably connected to the middle of the concave seat 410. A transmission groove 430 is opened on the outer wall of the ink cartridge 320, and the stirring rod 510 slides in the transmission groove 430. A rotating hole 440 is opened at the end of the stirring rod 510 away from the ink cartridge 320, and the transmission member 420 is rotatably connected to the stirring rod 510 through the rotating hole 440; the transmission mechanism 330 also includes a stirring plate 520 arranged at the stirring rod 510 at one end of the ink cartridge 320, and a circulation hole 530 is opened at the stirring plate 520.

[0049] When the nozzle 310 in the present embodiment moves, the concave seat 410 will be driven to move up and down, and the transmission member 420 will move downward, thereby driving the transmission member 420 and the rotating hole 440 to rotate, and at the same time, the stirring rod 510 will move inside the transmission groove 430, so as to stir and mix the colorless ink in the ink cartridge 320. The transmission member 420 converts the force of the nozzle 310 moving up and down into a driving force for stirring the ink cartridge 320, so that the ink cartridge 320 is evenly mixed while the nozzle 310 moves; when the stirring rod 510 moves, the stirring plate 520 will be driven to slide inside the ink cartridge 320, and the stirring plate 520 will push and squeeze the colorless ink inside the ink cartridge 320. After squeezing, the colorless ink flows out through the circulation hole 530. By pushing and squeezing the colorless ink and then flowing it, the stirring effect of the stirring rod 510 on the colorless ink in the ink cartridge 320 is improved, and the uniformity of the colorless ink mixing is further improved.

[0050] Combination Figure 2-6 As shown, in this embodiment, a movable platform 210 is provided on the upper part of the detection frame 130, a cavity 450 is formed in the movable platform 210, the nozzle 310 slides in the cavity 450, the raised frame 340 is located in the middle of one side of the nozzle 310 and is provided with a center groove 380, the transmission plate 350 is located inside the center groove 380, the nozzle 310 is located at the concave seat 410 and is fixed with a concave frame 370, the transmission plate 350 is fixed on both sides of the concave seat 410, and the concave frame 370 is slidably connected to the concave seat 410 and the transmission plate 350.

[0051] In the process of coding the PE packaging film product 500 by the nozzle 310 in this embodiment, the mobile platform 210 will drive the nozzle 310 to move at different positions on the surface of the PE packaging film product 500, so as to spray colorless ink on different positions. When the nozzle 310 moves in the horizontal direction, the concave frame 370 will slide with the concave seat 410. When the concave frame 370 slides out of the range of the concave seat 410, it will slide on the surface of the transmission plate 350. When the transmission plate 350 moves up and down through the raised frame 340, it will drive the concave frame 370 to move up and down, so that the nozzle 310 can move up and down in the cavity 450 in the mobile platform 210. Through the concave frame 370 and the concave seat 410, the nozzle 310 can be moved horizontally to code different positions without affecting the up and down transmission of the nozzle 310 by the transmission mechanism 330, thereby improving the practicality of the device.

[0052] Combination Figure 7-10As shown, in this embodiment, an inclined groove 710 is provided at the inclined surface 360, a detachable inclined frame 720 is provided in the inclined groove 710, a placement groove 730 is provided in the middle of the inclined frame 720, and a plurality of rolling columns 740 in contact with the PE packaging film product 500 are equidistantly provided in the placement groove 730; the inclined frame 720 is provided with placement holes 910 at both ends of the placement groove 730, bearing seats 920 are provided at both ends of the rolling column 740, the bearing seats 920 are located inside the placement holes 910, a blocking plate 930 is provided at the outer wall of the rolling column 740, and a blocking plate 930 is provided at the blocking plate 930. Block 940; sleeves 950 are fixedly connected at both ends of the blocking block 940, and the sleeve 950 includes a positioning hole 951 for placing the bearing seat 920. The outer wall of the sleeve 950 is engraved with a thread line 952, and the thread line 952 is threadedly connected to the inner wall of the placement groove 730; the blocking plate 930 forms a calibration arc 960 near one end of the placement groove 730, and the tilting frame 720 is equidistantly provided with calibration grooves 970 that match the calibration arc 960 in the extension direction of the placement groove 730. The number of turns of the thread line 952 is an integer. When the calibration arc 960 matches the calibration groove 970, the blocking block 940 is located in the middle of the right side of the rolling column 740.

[0053] In this embodiment, the rolling column 740 is placed in the placement groove 730 in the tilting frame 720, and the tilting frame 720 is installed on the inclined surface 360 ​​through the inclined groove 710. When the PE packaging film product 500 contacts the inclined surface 360, it will contact the rolling column 740 on the tilting frame 720, thereby reducing the friction of the PE packaging film product 500 when it moves on the inclined surface 360, preventing the PE packaging film from being damaged during the movement of the PE packaging film product 500; the bearing seat 920 is placed inside the placement hole 910. , reducing the friction between the rolling column 740 and the tilting frame 720, and then protecting the surface of the rolling column 740 through the blocking block 940 on the blocking plate 930, preventing the protruding PE packaging film left in the PE packaging film product 500 due to the manufacturing process or design from being rolled into the rolling column 740, and improving the smoothness of the rolling column 740 sliding when facing the uneven PE packaging film product 500; putting the sleeve 950 into the placement hole 910, and rotating the sleeve 950 so that the thread line 952 fits with the thread of the placement hole 910 The sleeve 950 is fixed, and the positioning hole 951 limits the bearing seat 920 to prevent the rolling column 740 from deviating inside the placement hole 910. The sleeve 950 can limit and fix the blocking block 940 and the bearing seat 920 again, thereby improving the smoothness of the overall sliding of the tilting frame 720 on the PE packaging film product 500. When installing the blocking plate 930, the staff will align the calibration arc 960 at the blocking plate 930 with the calibration groove 970 on the placement groove 730, and then rotate The sleeve 950 is rotated inside the placement hole 910, and the number of turns of the thread line 952 is an integer so that after the sleeve 950 reaches the bottom of the placement hole 910, the calibration arc 960 is still aligned with the calibration groove 970, so that the blocking block 940 is located in the middle of the right side of the rolling column 740. Through the calibration groove 970 and the calibration arc 960, when the staff installs the blocking plate 930, the blocking block 940 is located in the middle of the right side of the rolling column 740, which not only ensures the blocking effect of the blocking block 940 on the PE packaging film but also facilitates the staff to install it.

[0054] Example 2

[0055] like Figure 1-5 As shown, this embodiment is a coding process using a PE film hidden anti-counterfeiting code coding device in Example 1, including the following steps:

[0056] S1: Putting colorless ink into the ink cartridge 320;

[0057] S2: The conveyor belt 110 will deliver the PE packaging film product 500 to the part located at the detection frame 130, and the PE packaging film product 500 will lift the raised frame 340 along the inclined direction of the inclined surface 360, thereby lifting the nozzle 310;

[0058] S3: The nozzle 310 is lifted to drive the transmission mechanism 330 to rotate, so that the stirring rod 510 slides and stirs the colorless ink inside the ink cartridge 320;

[0059] S4: The stirred colorless ink is pumped into the nozzle 310 through a hose pump connected to the inside of the ink cartridge 320, and anti-counterfeiting codes are sprayed on different positions on the surface of the PE packaging film product 500 through the mobile platform 210.

[0060] In the above, the nozzle 310 can be moved by the PE packaging film product 500, so as to slide and stir the colorless ink inside the ink cartridge 320, so that the ink used by the nozzle 310 is more uniform, and the coding quality of the nozzle 310 is improved.

[0061] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0062] The present invention and its implementation methods are described schematically above, and the description is not restrictive. The embodiments shown in the embodiments are only part of the implementation methods of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the embodiments and designs a structure and an implementation method similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A PE film hidden anti-counterfeiting code inkjet device, characterized in that: The device comprises a device body (100), wherein the device body (100) comprises a conveyor belt (110) for placing PE packaging film products (500), and a detection frame (130) is provided at the conveyor belt (110); A coding mechanism (120) for anti-counterfeiting is provided at the detection frame (130), and the coding mechanism (120) comprises a nozzle (310) that can move up and down and an ink cartridge (320) for storing colorless ink; A transmission mechanism (330) is provided between the nozzle (310) and the ink cartridge (320), and the transmission mechanism (330) comprises a stirring rod (510) for mixing the colorless ink in the ink cartridge (320); A detection channel (140) is formed in the middle of the detection frame (130) for the PE packaging film product (500) to pass through. The inkjet coding mechanism (120) further comprises a protruding frame (340) arranged at the conveyor belt (110) and located on both sides of the detection channel (140). An inclined surface (360) is provided at the bottom of the protruding frame (340). The inclined surface (360) is in sliding contact with the PE packaging film product (500), and the thickness of the inclined surface (360) gradually increases from both ends to the middle. A transmission plate (350) connected to the nozzle (310) is provided at the protruding frame (340); The transmission mechanism (330) further comprises a concave seat (410) arranged outside the nozzle (310), a transmission member (420) being rotatably connected to the middle of the concave seat (410), a transmission groove (430) being provided on the outer wall of the ink cartridge (320), a stirring rod (510) sliding in the transmission groove (430), a rotation hole (440) being provided at one end of the stirring rod (510) away from the ink cartridge (320), and the transmission member (420) being rotatably connected to the stirring rod (510) via the rotation hole (440).

2. The PE film hidden anti-counterfeiting code inkjet device according to claim 1 is characterized by: The transmission mechanism (330) further comprises a stirring plate (520) arranged at the stirring rod (510) and located at one end of the ink cartridge (320), and a flow hole (530) is provided at the stirring plate (520).

3. The PE film hidden anti-counterfeiting code inkjet device according to claim 1 is characterized by: A movable platform (210) is provided on the upper part of the detection frame (130), a cavity (450) is formed in the movable platform (210), the nozzle (310) slides in the cavity (450), a raised frame (340) is provided in the middle of one side of the nozzle (310) and a central groove (380) is provided, a transmission plate (350) is located inside the central groove (380), the nozzle (310) is located at the concave seat (410) and a concave frame (370) is fixed thereto, the transmission plate (350) is fixed on both sides of the concave seat (410), and the concave frame (370) is slidably connected to the concave seat (410) and the transmission plate (350).

4. The PE film hidden anti-counterfeiting code inkjet device according to claim 1 is characterized by: An inclined groove (710) is provided at the inclined surface (360), a detachable inclined frame (720) is provided in the inclined groove (710), a placement groove (730) is provided in the middle of the inclined frame (720), and a plurality of rolling columns (740) in contact with the PE packaging film product (500) are equidistantly provided in the placement groove (730).

5. The PE film hidden anti-counterfeiting code inkjet device according to claim 4 is characterized by: The tilting frame (720) is provided with placement holes (910) at both ends of the placement groove (730), bearing seats (920) are provided at both ends of the rolling column (740), the bearing seats (920) are located inside the placement holes (910), a blocking plate (930) is provided on the outer wall of the rolling column (740), and a blocking block (940) is provided on the blocking plate (930) and is attached to the surface of the rolling column (740).

6. The PE film hidden anti-counterfeiting code inkjet device according to claim 5, characterized in that: The blocking block (940) is fixedly connected to sleeves (950) at both ends. The sleeve (950) includes a positioning hole (951) for placing the bearing seat (920). The outer wall of the sleeve (950) is engraved with a thread line (952), and the thread line (952) is threadedly connected to the inner wall of the placement groove (730).

7. A PE film hidden anti-counterfeiting code inkjet device according to claim 5 or 6, characterized in that: A calibration arc (960) is formed near one end of the placement groove (730) of the blocking plate (930); calibration grooves (970) that match the calibration arc (960) are equidistantly arranged at the tilting frame (720) in the extending direction of the placement groove (730); the number of turns of the thread line (952) is an integer; when the calibration arc (960) matches the calibration groove (970), the blocking block (940) is located in the middle of the right side of the rolling column (740).

8. The coding process of the PE film hidden anti-counterfeiting code coding equipment according to claim 7 is characterized in that: The following steps are involved: S1: Putting colorless ink into the ink cartridge (320); S2: The conveyor belt (110) conveys the PE packaging film product (500) to the portion located at the detection frame (130), and the PE packaging film product (500) lifts the raised frame (340) along the inclined direction of the inclined surface (360), thereby lifting the nozzle (310); S3: The nozzle (310) drives the transmission mechanism (330) to rotate during the lifting process, so that the stirring rod (510) slides and stirs the colorless ink inside the ink cartridge (320); S4: The stirred colorless ink is pumped into the nozzle (310) through a hose pump connected to the inside of the ink cartridge (320), and anti-counterfeiting codes are sprayed on different positions on the surface of the PE packaging film product (500) through the mobile platform (210).

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