Packing box anti-counterfeiting watermark magnetizing device

Abstract

The invention relates to the technical field of magnetizing devices, and provides a packaging box anti-fake watermark magnetizing device which comprises a printing machine body, a first connecting plate and a second connecting plate are installed on the printing machine body, and a guide plate is fixedly connected between the first connecting plate and the second connecting plate. A first key rod and a second key rod are rotatably mounted on the first connecting plate and the second connecting plate, an opening is formed in the printing machine body, a magnetizing plate is slidably mounted in the opening, a connecting assembly is mounted on the magnetizing plate, and an electric heating plate is mounted on the connecting assembly; a telescopic assembly is arranged between the printing machine body and the electric heating plate, and a conveying assembly is installed on the printing machine body. By means of the technical scheme, the problems that when an existing magnetizing device is used, a printing material cannot be kept fixed in the magnetizing process, and the printing material cannot continuously move when magnetizing is completed and drying is conducted are solved.

Description

Technical Field

[0001] The invention relates to the technical field of magnetizing devices, and in particular to a magnetizing device for anti-counterfeiting watermarks on packaging boxes. Background Art

[0002] Traditional anti-counterfeiting technologies, such as laser engraving and QR codes, can effectively improve product safety, but these technologies are gradually being overcome by counterfeiting technologies. In contrast, anti-counterfeiting watermark magnetization devices use a combination of watermark and magnetization technology to not only form imperceptible watermark patterns on packaging boxes, but also use specific magnetization treatment to enable these watermark patterns to be verified by professional equipment, increasing the difficulty of anti-counterfeiting. Existing magnetization devices still have some defects.

[0003] For example, the invention patent with the publication number CN116442647A discloses a magnetization orientation device and operation method of magnetic optically variable effect ink, including a strong magnetic field plate, a chassis, a printed matter conveying mechanism and a support track. The left and right ends of the chassis are respectively provided with a feed port and a discharge port. The printed matter conveying mechanism is installed on the rear side of the chassis, the support track is installed on the left side of the chassis, the strong magnetic field plate is installed on the right side of the chassis and the upper end surface of the strong magnetic field plate is flush with the upper end surface of the support track. The strong magnetic field plate can face the position to be magnetized on the printed matter. The printed matter is lowered under the conveying action of the printed matter conveying mechanism and enters from the feed port and is sent out from the discharge port. When producing magnetic optically variable ink, this magnetization orientation device can be directly connected between the screen roller of the silk screen printing machine and the curing drying oven, or connected to the same position of other printing equipment and the curing drying oven to realize the curing orientation of the magnetic ink, and finally obtain a magnetic optically variable effect ink printing. Although the above device can achieve the light-changing effect, it cannot conveniently switch between heating and drying and magnetization when in use, and cannot keep the printed material fixed during the magnetization process, and cannot keep the printed material moving when the magnetization is completed and the drying is carried out. Summary of the invention

[0004] The invention provides a packaging box anti-counterfeiting watermark magnetizing device, which solves the problem that the existing magnetizing device cannot keep the printed material fixed during the magnetization process when in use, and cannot make the printed material continue to move when the magnetization is completed and dried.

[0005] The technical solution of the present invention is as follows: A packaging box anti-counterfeiting watermark magnetization device comprises a printing machine body, a first connecting plate and a second connecting plate are installed on the printing machine body, a guide plate is fixedly connected between the first connecting plate and the second connecting plate, a first key rod and a second key rod are rotatably installed on the first connecting plate and the second connecting plate, an opening is opened on the printing machine body, a magnetization plate is slidably installed in the opening, a connecting assembly is installed on the magnetization plate, an electric heating plate is installed on the connecting assembly, a telescopic assembly is arranged between the printing machine body and the electric heating plate, a conveying assembly is installed on the printing machine body, a first slide plate is slidably installed on the printing machine body, a second motor is fixedly connected to the first slide plate, a docking assembly and a supporting assembly are installed on the first slide plate, and a second gear is installed on both the first key rod and the second key rod.

[0006] As a preferred solution of the present invention, the connecting component includes a limit groove opened on the printing machine body, a limit plate is slidably installed in the limit groove, the limit plate and the magnetization plate are fixedly connected, a first connecting block is rotatably installed in the magnetization plate, a second connecting block is fixedly connected to the first connecting block, and the second connecting block and the electric heating plate are rotatably connected.

[0007] As a preferred solution of the present invention, the inner wall of the limiting groove and the outer wall of the limiting plate are in contact with each other, and the limiting plates are symmetrically distributed on both sides of the magnetization plate.

[0008] As a preferred solution of the present invention, the conveying assembly includes a key sleeve connected to both sides of the first key rod and the second key rod, a slip ring is rotatably installed on the key sleeve, a connecting plate is fixedly connected to the slip ring, the connecting plate and the printing machine body are slidably connected, a first motor is installed on the printing machine body, a first gear is fixedly connected to the output shaft of the first motor, racks are meshed and connected on both sides of the first gear, and the racks are respectively connected to the connecting plates on both sides of the printing machine body.

[0009] As a preferred solution of the present invention, the key sleeve is made of rubber, the connecting plate, the sliding ring and the rack are fixedly connected to form an integral structure, and the length of the key sleeve is less than half the length of the first key rod.

[0010] As a preferred solution of the present invention, an annular groove is provided on the side of the slip ring, and mounting blocks are installed in the annular grooves of two adjacent slip rings, and the upper and lower parts of the mounting blocks are both spherical segments.

[0011] As a preferred solution of the present invention, the docking assembly includes a third key rod fixedly connected to the second motor output shaft, a first connecting ring is fixedly provided on the first slide plate, a fourth key rod is fixedly connected to the third key rod, and a fixed block is fixedly provided on the first key rod.

[0012] As a preferred solution of the present invention, the third key rod and the fourth key rod are connected to the first connecting ring by rotational connection, and a key slot for docking with the fourth key rod is provided in the fixing block.

[0013] As a preferred solution of the present invention, the supporting assembly includes a first sliding rod fixedly connected to the first sliding plate, a connecting rod fixedly connected to the first sliding rod, a second sliding rod fixedly connected to the connecting rod, a spring fixedly connected between the connecting rod and the printing machine body, a pressure plate fixedly provided on the electric heating plate, and the second sliding rod is slidably connected to the printing machine body.

[0014] As a preferred solution of the present invention, the telescopic assembly includes a first side plate and a second side plate fixedly connected to the bottom of the electric heating plate, a slide groove is provided on the printing machine body, an electric push rod is slidably connected in the slide groove, a fixed plate is fixed on the electric push rod, a second slide plate is slidably installed on the fixed plate, and a connecting groove for docking with the second slide plate is provided on the electric heating plate.

[0015] The working principle and beneficial effects of the present invention are: 1. Through the telescopic component, the device can conveniently switch between the heating and drying and magnetization functions. By shortening the electric push rod, the electric heating plate is moved to the inside of the printing machine body, thereby realizing the function of rapid drying of the printed material. When the electric push rod is extended, the anti-counterfeiting watermark inside the device can be magnetized through the magnetization plate, which enhances the convenience of using the device.

[0016] 2. Through the conveying assembly on the device, the device can adapt to the printing and conveying of packaging boxes and cardboards of different widths. The first motor drives the first gear to rotate, driving the key rods on both sides of the first gear to move toward or away from each other, thereby changing the distance between two adjacent key sleeves, so as to facilitate the subsequent conveying of packaging boxes and cardboards of different widths, thereby enhancing the adaptability of the device.

[0017] 3. A support assembly is provided on the device. When the electric push rod is shortened, the connecting rod will be abutted by the pressure plate, thereby pushing the first slide plate and the second motor to move, so that the fourth key rod is docked with the key slot in the fixed block, and the third key rod on the second motor drives the fourth key rod to rotate, and the fourth key rod drives the first key rod to rotate. The second gear will cause the first key rod to drive the second key rod to rotate in the opposite direction, so that the upper and lower sets of key sleeves of the subsequent drive device rotate in opposite directions, thereby allowing the device to continuously transport printed materials when switched to the drying mode, and to keep the printed materials stationary when switched to the magnetization mode, thereby enhancing the adaptability of the device, ensuring the magnetization quality of the device, and solving the problems that the existing magnetization device cannot keep the printed materials stationary during the magnetization process and cannot keep the printed materials moving continuously after the magnetization is completed and drying is performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Figure 1 It is a schematic diagram of the overall structure of a packaging box anti-counterfeiting watermark magnetization device of the present invention; Figure 2 yes Figure 1 A magnified schematic diagram of the structure at center A; Figure 3 It is a schematic diagram of the connection structure between the conveying assembly and the first key rod of the present invention; Figure 4 yes Figure 3 A magnified schematic diagram of the structure at B in the middle; Figure 5 It is a schematic diagram of the connection structure of two adjacent slip rings of the present invention; Figure 6 It is a schematic diagram of the bottom structure of the printing machine body of the present invention; Figure 7 yes Figure 6 A magnified schematic diagram of the structure at C in the middle; Figure 8 It is a schematic diagram of the connection structure between the magnetizing plate and the electric heating plate of the present invention; Fig. 9 It is a schematic diagram of the connection structure between the electric heating plate and the electric push rod of the present invention; Fig.10 yes Fig. 9 A magnified schematic diagram of the structure at D in the middle; Fig.11 It is a schematic diagram of the connection structure between the printer body and the first connection plate of the present invention; Fig.12 yes Fig.11 A magnified schematic diagram of the structure at position E in the middle.

[0020] Figure numerals: 1, printer body; 2, first connecting plate; 3, second connecting plate; 4, guide plate; 5, slide groove; 6, magnetization plate; 7, opening; 8, connecting assembly; 801, limit groove; 802, limit plate; 803, first connecting block; 804, second connecting block; 9, electric heating plate; 10, conveying assembly; 1001, connecting plate; 1002, slip ring; 1003, key sleeve; 1004, rack; 1005, first motor; 1006, first gear; 11, first key rod; 12, second key rod; 13, first slide plate; 14, second Motor; 15. Docking assembly; 1501. Third key rod; 1502. First connecting ring; 1503. Fourth key rod; 1504. Fixed block; 16. Support assembly; 1601. First slide rod; 1602. Connecting rod; 1603. Second slide rod; 1604. Spring; 1605. Press plate; 17. Annular groove; 18. Mounting block; 19. Telescopic assembly; 1901. First side plate; 1902. Second side plate; 1903. Electric push rod; 1904. Fixed plate; 1905. Second slide plate; 1906. Connecting groove; 20. Second gear. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1, as Figure 1-Figure 12As shown, this embodiment proposes a packaging box anti-counterfeiting watermark magnetization device, including a printing machine body 1, a first connecting plate 2 and a second connecting plate 3 are installed on the printing machine body 1, a guide plate 4 is fixedly connected between the first connecting plate 2 and the second connecting plate 3, the first connecting plate 2 and the second connecting plate 3 are used to support the guide plate 4, the guide plate 4 is convenient for subsequently conveying the packaging box cardboard to the inside of the device for printing and anti-counterfeiting watermark magnetization treatment, the first connecting plate 2 and the second connecting plate 3 are rotatably installed with a first key rod 11 and a second key rod 12, an opening 7 is opened on the printing machine body 1, a magnetization plate 6 is slidably installed in the opening 7, a connecting component 8 is installed on the magnetization plate 6, the opening 7 is for the magnetization plate 6 to pass through, so that the anti-counterfeiting label can be magnetized later, and a connecting component 8 is installed on the connecting component 8 There is an electric heating plate 9, which can be rotated on the magnetization plate 6 through the connecting component 8 so as to realize the storage function later. A telescopic component 19 is arranged between the printing machine body 1 and the electric heating plate 9. The telescopic component 19 is used to adjust the position of the electric heating plate 9 and the magnetization plate 6, so as to switch the function of the device. A conveying component 10 is installed on the printing machine body 1. The first key rod 11 and the second key rod 12 cooperate with the conveying component 10 to convey packaging boxes of different widths, thereby enhancing the adaptability of the device. A first slide plate 13 is slidably installed on the printing machine body 1, and a second motor 14 is fixedly connected to the first slide plate 13. A docking component 15 and a support component 16 are installed on the first slide plate 13. A second gear 20 is installed on both the first key rod 11 and the second key rod 12. The second gear 20 can keep the first key rod 11 and the second key rod 12 rotating in opposite directions. The docking component 15 and the support component 16 enable the device to keep the position of the printed material unchanged when switching to the magnetization function, and can continuously convey the material when switching to the heating and drying function, thereby enhancing the convenience of the device when using it.

[0023] Embodiment 2, as Figure 1-Figure 12 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes a packaging box anti-counterfeiting watermark magnetization device.

[0024] In this embodiment, the connecting component 8 includes a limit groove 801 opened on the printing machine body 1, and a limit plate 802 is slidably installed in the limit groove 801. The limit plate 802 and the magnetization plate 6 are fixedly connected. A first connecting block 803 is rotatably installed in the magnetization plate 6, and a second connecting block 804 is fixedly connected to the first connecting block 803. The second connecting block 804 and the electric heating plate 9 are rotatably connected. After the magnetization plate 6 and the electric heating plate 9 are removed as a whole, the storage function can be achieved by rotating the electric heating plate 9. The first connecting block 803 rotates in the magnetization plate 6, and the electric heating plate 9 rotates on the outside of the second connecting block 804, thereby reducing the space occupied by the device.

[0025] In this embodiment, the inner wall of the limiting groove 801 and the outer wall of the limiting plate 802 are in contact with each other, and the limiting plates 802 are symmetrically distributed on both sides of the magnetizing plate 6. The limiting groove 801 and the limiting plate 802 allow the magnetizing plate 6 to move straight in the device, thereby ensuring the stability of the device during magnetization operation.

[0026] In this embodiment, the conveying assembly 10 includes a key sleeve 1003 connected to both sides of the first key rod 11 and the second key rod 12 by a key, a slip ring 1002 is rotatably installed on the key sleeve 1003, a connecting plate 1001 is fixedly connected to the slip ring 1002, the connecting plate 1001 and the printing machine body 1 are slidingly connected, a first motor 1005 is installed on the printing machine body 1, a first gear 1006 is fixedly connected to the output shaft of the first motor 1005, both sides of the first gear 1006 are meshedly connected with racks 1004, and the racks 1004 are respectively connected to the connecting plates 1001 on both sides of the printing machine body 1. The device can drive the first gear 1006 to rotate by the first motor 1005. When the first gear 1006 rotates, it will drive the racks 1004 on both sides thereof to move toward or away from each other, thereby changing the initial positions of the slip rings 1002 and the key sleeve 1003 on both sides of the device, so as to adapt to the subsequent use of packaging boxes of different sizes.

[0027] In this embodiment, the key sleeve 1003 is made of rubber material, so that the upper and lower groups of key sleeves 1003 of the device can stably clamp the packaging box cardboard for transportation. The connecting plate 1001, the slip ring 1002 and the rack 1004 are fixedly connected as an integral structure to ensure the overall stability of the device. The length of the key sleeve 1003 is less than half the length of the first key rod 11, ensuring that the two key sleeves 1003 can be adjusted in position on the first key rod 11.

[0028] In this embodiment, an annular groove 17 is provided on the side of the slip ring 1002, and mounting blocks 18 are installed in the annular grooves 17 of two adjacent slip rings 1002. The upper and lower halves of the mounting blocks 18 are both spherical segments. When the upper slip ring 1002 moves left and right, the mounting block 18 in the annular groove 17 will drive the lower slip ring 1002 to move left and right synchronously, and will not affect the reverse rotation of the upper and lower slip rings 1002, thereby ensuring the stability of the device during operation.

[0029] In this embodiment, the docking assembly 15 includes a third key rod 1501 fixedly connected to the output shaft of the second motor 14, a first connecting ring 1502 is fixedly provided on the first slide plate 13, a fourth key rod 1503 is fixedly connected to the third key rod 1501, and a fixed block 1504 is fixedly provided on the first key rod 11. The third key rod 1501 and the fourth key rod 1503 in the first connecting ring 1502 are driven to rotate by the second motor 14, and the fourth key rod 1503 facilitates the subsequent driving of the fixed block 1504 to rotate, thereby conveying the printed material.

[0030] In this embodiment, the connection between the third key rod 1501 and the fourth key rod 1503 and the first connecting ring 1502 is a rotational connection, and a key slot for docking with the fourth key rod 1503 is opened in the fixed block 1504. When the third key rod 1501 and the fourth key rod 1503 are pushed, the fourth key rod 1503 will dock with the key slot on the fixed block 1504, so that the fixed block 1504 and the third key rod 1501 rotate synchronously, which is convenient for the subsequent delivery and stop of the printing material when switching different functions.

[0031] In this embodiment, the support assembly 16 includes a first slide bar 1601 fixedly connected to the first slide bar 13, a connecting rod 1602 fixedly connected to the first slide bar 1601, a second slide bar 1603 fixedly connected to the connecting rod 1602, a spring 1604 fixedly connected between the connecting rod 1602 and the printing machine body 1, a pressure plate 1605 fixedly arranged on the electric heating plate 9, and a sliding connection between the second slide bar 1603 and the printing machine body 1. After the electric heating plate 9 is moved to the interior of the device, it can abut the connecting rod 1602 through the pressure plate 1605, so that the connecting rod 1602 pushes the second slide bar 1603 and the first slide bar 1601, the spring 1604 is compressed, and the first slide bar 13 slides on the printing machine body 1 so as to automatically convey the printing material when the heating function is used.

[0032] In this embodiment, the telescopic assembly 19 includes a first side plate 1901 and a second side plate 1902 fixedly connected to the lower side of the electric heating plate 9. A slide groove 5 is provided on the printing machine body 1. An electric push rod 1903 is slidably connected in the slide groove 5. A fixed plate 1904 is fixedly provided on the electric push rod 1903. Figure 1 It can be seen that since both sides of the slide groove 5 are through-opening structures, the slide groove 5 can facilitate the removal or installation of the electric push rod 1903. A second slide plate 1905 is slidably installed on the fixed plate 1904. A connecting groove 1906 for docking with the second slide plate 1905 is provided on the electric heating plate 9. The second slide plate 1905 can be moved out from the inside of the connecting groove 1906, so that the electric heating plate 9 can be removed from the device. By shortening the electric push rod 1903, the electric heating plate 9 is moved to the inside of the device, so that the device switches from the magnetization function to the function of heating and drying printed materials.

[0033] Specifically, the present invention is a packaging box anti-counterfeiting watermark magnetization device, first, as Figure 1-Figure 7As shown, the first connecting plate 2 and the second connecting plate 3 on the printing machine body 1 are used to support the guide plate 4, and the guide plate 4 is used to transport the packaging box cardboard to the inside of the device for printing and anti-counterfeiting watermark magnetization treatment. The opening 7 can be used for the magnetization plate 6 and the electric heating plate 9 to pass through, so as to subsequently magnetize the anti-counterfeiting label and heat and dry it after magnetization. The electric heating plate 9 can be rotated on the magnetization plate 6 through the connecting component 8, so as to realize the storage function after the magnetization plate 6 and the electric heating plate 9 are removed. Since the second connecting block 804 and the electric heating plate 9 are rotatably connected, the device can rotate the first connecting block 803 in the magnetization plate 6 by rotating the electric heating plate 9 after the magnetization plate 6 and the electric heating plate 9 are removed as a whole, and the electric heating plate 9 rotates on the outside of the second connecting block 804, thereby reducing the space occupied by the device. Since the limit plates 802 are symmetrically distributed on both sides of the magnetizing plate 6, the telescopic assembly 19 is used to adjust the positions of the electric heating plate 9, the magnetizing plate 6 and the electric heating plate 9, so as to switch the magnetizing or heating and drying function of the device, shorten the electric push rod 1903 so that the electric heating plate 9 moves to the inside of the device, so that the device switches from the magnetizing function to the heating and drying function of the printed material. Figure 1 It can be seen that since both sides of the slide groove 5 are through-opening structures, the electric push rod 1903 can be removed or installed on the printing machine body 1, and the second slide plate 1905 can be moved out from the inside of the connecting groove 1906, so that the electric heating plate 9 can be removed from the device.

[0034] like Figure 3-Figure 12 As shown, the first key rod 11 and the second key rod 12 cooperate with the conveying assembly 10 to enable the device to convey packaging box cardboards of different widths. The first motor 1005 drives the first gear 1006 to rotate. When the first gear 1006 rotates, it will drive the racks 1004 on both sides of the first gear 1006 to move toward or away from each other, thereby changing the initial positions of the slip rings 1002 and the key sleeves 1003 on both sides of the device. When the upper slip ring 1002 moves left and right, the mounting block 18 in the annular groove 17 will drive the lower slip ring 1002 to move left and right synchronously, and will not affect the reverse rotation of the upper and lower slip rings 1002. By changing the positions of the slip rings 1002 and the key sleeves 1003 on both sides, the device can adapt to the conveying of packaging box cardboards of different sizes. The third key rod 1501 and the fourth key rod 1503 in the first connecting ring 1502 are driven to rotate by the second motor 14. The fourth key rod 1503 facilitates the subsequent driving of the fixed block 1504 to rotate. When the first key rod 11 rotates, the second gear 20 can make the first key rod 11 and the second key rod 12 rotate in opposite directions, so that the device can stably convey the printed material. The docking assembly 15 and the support assembly 16 enable the device to keep the position of the printed material unchanged when switching to the magnetization function, and to continue to convey the material when switching to the heating and drying function. Fig.10As shown, by shortening the electric push rod 1903, the electric heating plate 9 is moved to the inside of the device, so that the device switches from the magnetization function to the function of heating and drying the printing material. In this process, the pressing plate 1605 will abut the connecting rod 1602, so that the connecting rod 1602 pushes the second slide bar 1603 and the first slide bar 1601, the spring 1604 is compressed, and the first slide plate 13 slides on the printing machine body 1, as shown in FIG. Figure 4 As shown, when the third key rod 1501 and the fourth key rod 1503 are pushed, the fourth key rod 1503 docks with the key slot in the fixed block 1504, so that the fixed block 1504 and the third key rod 1501 rotate synchronously, so that the device continues to transport the printed material when the magnetization is completed and drying is carried out, and the first side plate 1901 and the second side plate 1902 are used to block the opening 7, thereby improving the heating and drying effect of the device.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A packaging box anti-counterfeiting watermark magnetization device, comprising a printing machine body (1), characterized in that: The printer body (1) is provided with a first connecting plate (2) and a second connecting plate (3), a guide plate (4) is fixedly connected between the first connecting plate (2) and the second connecting plate (3), a first key rod (11) and a second key rod (12) are rotatably mounted on the first connecting plate (2) and the second connecting plate (3), an opening (7) is provided on the printer body (1), a magnetizing plate (6) is slidably mounted in the opening (7), a connecting assembly (8) is mounted on the magnetizing plate (6), and a connecting assembly (8) is mounted on the connecting assembly (8). An electric heating plate (9) is installed, a telescopic assembly (19) is arranged between the printing machine body (1) and the electric heating plate (9), a conveying assembly (10) is installed on the printing machine body (1), a first slide plate (13) is slidably installed on the printing machine body (1), a second motor (14) is fixedly connected to the first slide plate (13), a docking assembly (15) and a supporting assembly (16) are installed on the first slide plate (13), and a second gear (20) is installed on both the first key rod (11) and the second key rod (12).

2. A packaging box anti-counterfeiting watermark magnetization device according to claim 1, characterized in that: The connecting assembly (8) comprises a limiting groove (801) provided on the printing machine body (1), a limiting plate (802) being slidably mounted in the limiting groove (801), the limiting plate (802) being fixedly connected to the magnetizing plate (6), a first connecting block (803) being rotatably mounted in the magnetizing plate (6), a second connecting block (804) being fixedly connected to the first connecting block (803), and the second connecting block (804) being rotatably connected to the electric heating plate (9).

3. A packaging box anti-counterfeiting watermark magnetization device according to claim 2, characterized in that: The inner wall of the limiting groove (801) and the outer wall of the limiting plate (802) are in contact with each other, and the limiting plates (802) are symmetrically distributed on both sides of the magnetizing plate (6).

4. A packaging box anti-counterfeiting watermark magnetization device according to claim 1, characterized in that: The conveying assembly (10) comprises a key sleeve (1003) key-connected to both sides of the first key rod (11) and the second key rod (12); a slip ring (1002) is rotatably mounted on the key sleeve (1003); a connecting plate (1001) is fixedly connected to the slip ring (1002); the connecting plate (1001) is slidably connected to the printing machine body (1); a first motor (1005) is mounted on the printing machine body (1); a first gear (1006) is fixedly connected to the output shaft of the first motor (1005); racks (1004) are meshingly connected to both sides of the first gear (1006); and the racks (1004) are respectively connected to the connecting plates (1001) on both sides of the printing machine body (1).

5. A packaging box anti-counterfeiting watermark magnetization device according to claim 4, characterized in that: The key sleeve (1003) is made of rubber material, the connecting plate (1001), the slip ring (1002) and the rack (1004) are fixedly connected to form an integral structure, and the length of the key sleeve (1003) is less than half the length of the first key rod (11).

6. A packaging box anti-counterfeiting watermark magnetization device according to claim 4, characterized in that: An annular groove (17) is provided on the side of the slip ring (1002), and a mounting block (18) is installed in the annular groove (17) of two adjacent slip rings (1002), and the upper and lower halves of the mounting block (18) are both spherical segments.

7. The anti-counterfeiting watermark magnetization device for packaging box according to claim 1, characterized in that: The docking assembly (15) comprises a third key rod (1501) fixedly connected to the output shaft of the second motor (14), a first connecting ring (1502) fixedly arranged on the first slide plate (13), a fourth key rod (1503) fixedly connected to the third key rod (1501), and a fixing block (1504) fixedly arranged on the first key rod (11).

8. The anti-counterfeiting watermark magnetization device for packaging box according to claim 7, characterized in that: The third key rod (1501) and the fourth key rod (1503) are connected to the first connecting ring (1502) in a rotational manner, and a key slot for docking with the fourth key rod (1503) is provided in the fixing block (1504).

9. The anti-counterfeiting watermark magnetization device for packaging box according to claim 1, characterized in that: The support assembly (16) comprises a first slide bar (1601) fixedly connected to the first slide plate (13); a connecting rod (1602) fixedly connected to the first slide bar (1601); a second slide bar (1603) fixedly connected to the connecting rod (1602); a spring (1604) fixedly connected between the connecting rod (1602) and the printing machine body (1); a pressing plate (1605) fixedly arranged on the electric heating plate (9); and a sliding connection between the second slide bar (1603) and the printing machine body (1).

10. The anti-counterfeiting watermark magnetization device for packaging box according to claim 1, characterized in that: The telescopic assembly (19) comprises a first side plate (1901) and a second side plate (1902) fixedly connected to the bottom of the electric heating plate (9); a slide groove (5) is provided on the printing machine body (1); an electric push rod (1903) is slidably connected in the slide groove (5); a fixed plate (1904) is fixedly arranged on the electric push rod (1903); a second slide plate (1905) is slidably mounted on the fixed plate (1904); and a connecting groove (1906) for docking with the second slide plate (1905) is provided on the electric heating plate (9).

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