A printing device for anti-counterfeiting digital labels

Abstract

The present application relates to a printing device for anti-counterfeiting digital labels, belonging to the technical field of printing devices, which includes a machine body, a rotating roller rotatably connected to the machine body, a rotating motor for driving the rotating roller to rotate is installed on a side wall of one side of the machine body, a rotating rod is provided on one side of the machine body, a brush is fixed on the circumferential side wall of the rotating rod, both ends of the rotating rod are respectively rotatably connected to the machine body, a linkage device is provided between the rotating rod and the rotating roller, the linkage device includes a first gear and a second gear, the first gear is fixed on the circumferential side wall of one end of the rotating rod, the second gear is fixed on the circumferential side wall of one end of the rotating roller, and the first gear is meshed with the second gear. The present application has the effect of improving printing quality.

Description

Technical Field

[0001] The present application relates to the technical field of printing devices, and in particular to a printing device for anti-counterfeiting digital labels. Background Art

[0002] Anti-counterfeiting labels, also known as anti-counterfeiting trademarks, are labels that can be pasted, printed, or transferred on the surface of the subject matter, or on the packaging of the subject matter, or on the accessories of the subject matter, and have an anti-counterfeiting effect. In today's enterprises, anti-counterfeiting labels are a company's solution and effective means to protect its own brand.

[0003] Dust may adhere to the surface of the substrate used for printing, but most of the current printing devices print directly on the substrate.

[0004] With respect to the above-mentioned related technologies, the inventors believe that dust on the surface of the substrate will cause white spots to appear on the printed product, resulting in a defect of poor quality of the printed product. Summary of the invention

[0005] In order to improve the printing quality, the present application provides a printing device for an anti-counterfeiting digital label.

[0006] The printing device of an anti-counterfeiting digital label provided in the present application adopts the following technical solution:

[0007] A printing device for anti-counterfeiting digital labels comprises a body, a rotating roller is rotatably connected in the body, a rotating motor for driving the rotating roller to rotate is installed on a side wall of one side of the body, a rotating rod is provided on one side of the body, a brush is fixed on the circumferential side wall of the rotating rod, both ends of the rotating rod are respectively rotatably connected to the body, a linkage device is provided between the rotating rod and the rotating roller, the linkage device comprises a first gear and a second gear, the first gear is fixed on the circumferential side wall of one end of the rotating rod, the second gear is fixed on the circumferential side wall of one end of the rotating roller, and the first gear is meshed with the second gear.

[0008] By adopting the above technical solution, the rotating motor is started to make the rotating roller drive the second gear to rotate, and the second gear drives the rotating rod to rotate through the first gear. The rotating rod causes the brush to clean the surface of the substrate, thereby keeping the substrate clean during printing, making it less likely for the printed product to have white spots due to dust on the surface of the substrate, thereby achieving the effect of improving printing quality.

[0009] Optionally, a clamping device is provided on the side of the body close to the rotating rod, the clamping device includes an upper pressure plate, a lower pressure plate and a first spring, both ends of the lower pressure plate are fixedly connected to the body respectively, guide blocks are fixedly provided on the side walls at both ends of the upper pressure plate, and a guide groove slidingly adapted to the guide block is provided on the side wall of the body facing the guide block, the first spring is fixed between the upper pressure plate and the lower pressure plate, two first springs are provided, and the two first springs are respectively provided on both sides of the upper pressure plate and the lower pressure plate, and a control device for controlling the distance between the upper pressure plate and the lower pressure plate is provided between the upper pressure plate and the lower pressure plate.

[0010] By adopting the above technical solution, the staff uses the control device to move the upper pressing plate in the vertical direction, and at the same time the upper pressing plate causes the guide block to slide along the guide groove. The staff adjusts the distance between the upper pressing plate and the lower pressing plate according to the thickness of the substrate. As a result, the upper pressing plate and the lower pressing plate make it difficult for the substrate to shake, thereby further improving the printing quality.

[0011] Optionally, the control device includes a threaded rod and a nut, two threaded rods are provided, the first springs are the same in number and correspond one to one to the threaded rods, the first springs are sleeved on the circumferential side wall of the threaded rod, one end of the threaded rod passes through the upper pressure plate and extends to the outside, the other end of the threaded rod is fixedly connected to the lower pressure plate, the nut is threadedly connected to the threaded rod, and the nut is arranged on the side of the upper pressure plate away from the lower pressure plate.

[0012] By adopting the above technical solution, the staff moves the nut toward the upper platen, and the nut squeezes the upper platen, thereby reducing the distance between the upper platen and the lower platen, and the upper platen compresses the first spring; the staff moves the nut away from the upper platen, and the first spring releases its elastic force to move the upper platen upward, thereby increasing the distance between the upper platen and the lower platen. Through the above structure, the control device can adjust the distance between the upper platen and the lower platen.

[0013] Optionally, a third gear is sleeved on the circumferential side wall of the nut, a fourth gear is arranged on the side of the upper pressure plate facing the third gear, the fourth gear is meshingly connected with the third gear, a rotating shaft is fixed in the fourth gear, and the rotating shaft passes through the fourth gear and is threadedly connected with the lower pressure plate.

[0014] By adopting the above technical solution, the staff rotates the fourth gear by rotating the shaft, the fourth gear rotates the third gear, and the third gear rotates the nut, so that the staff can rotate all the nuts at the same time through the shaft, thereby making it convenient for the staff to adjust the distance between the upper pressure plate and the lower pressure plate.

[0015] Optionally, a support roller is provided on the side of the pressing device facing the rotating rod, and both ends of the support roller are rotatably connected to the machine body.

[0016] By adopting the above technical solution, the support roller supports the printing substrate, thereby achieving the effect of stabilizing the printing substrate.

[0017] Optionally, positioning plates are provided at both ends of the support roller, the support roller passes through the positioning plates, and the positioning plates are slidably connected to the support roller along the length direction of the support roller, the upper pressure plate is fixed with fixed blocks on the opposite side of the two first springs, the opposite side walls of the two fixed blocks are provided with cavities, the positioning blocks are slidably connected in the cavities, a second spring is fixed between the positioning block and the fixed block, and an adjustment device for adjusting the positions of the two is provided between the positioning block and the positioning plate.

[0018] By adopting the above technical solution, the staff adjusts the distance between the two positioning pieces through the adjustment device so that the distance between the two positioning pieces is equal to the width of the substrate; at the same time, the positioning block is moved through the adjustment device so that the distance between the two positioning blocks is equal to the width of the substrate. Through the above structure, the substrate is limited, and the effect of preventing the substrate from shaking is further achieved.

[0019] Optionally, a guide plate is fixedly provided between the positioning block and the positioning piece located on the same side, and the adjustment device is arranged between the two guide plates.

[0020] By adopting the above technical solution, the adjusting device adjusts the positioning piece and the positioning block simultaneously through the guide plate, so that the distance between the two positioning blocks is equal to the distance between the two positioning pieces, thereby achieving the effect of reducing manual operation errors.

[0021] Optionally, the adjusting device includes a bidirectional lead screw and a threaded sleeve, both ends of the bidirectional lead screw are provided with threads and the two sections of the threads have opposite rotation directions, two threaded sleeves are provided, the two threaded sleeves are fixed on the side walls on the opposite sides of the two guide plates, the two threaded sleeves are both threadedly connected to the bidirectional lead screw, and the two threaded sleeves are respectively provided on the two sections of the threads.

[0022] By adopting the above technical solution, the staff rotates the bidirectional lead screw to make the two threaded sleeves move toward or away from each other, thereby the two threaded sleeves make the two guide plates move toward or away from each other, the two guide plates make the two positioning plates move toward or away from each other, and at the same time, the two guide plates make the two positioning blocks move toward or away from each other, thereby achieving the effect of the adjustment device adjusting the distance between the two positioning plates and the distance between the two positioning blocks at the same time through the guide plates.

[0023] Optionally, a worm is sleeved on both ends of the rotating rod, and the worm is fixedly connected to the rotating rod, a transmission shaft is provided on one side of the worm, a worm wheel is fixedly provided on the end of the transmission shaft close to the worm, the worm wheel and the worm are meshingly connected, a blower plate is fixedly provided on the end of the transmission shaft away from the worm, and a supporting device is provided between the transmission shaft and the machine body.

[0024] By adopting the above technical solution, the rotating rod rotates the worm, the worm rotates the worm wheel, the worm wheel rotates the transmission shaft, and the transmission shaft rotates the blast plate, thereby air-drying the finished product after printing, achieving the effect of rapid drying of the ink on the surface of the substrate.

[0025] Optionally, the support device includes a support rod and a mounting block, the support rod is fixedly connected to the machine body, the mounting block is fixedly arranged at one end of the support rod away from the machine body, the transmission shaft passes through the mounting block and the two are rotationally connected.

[0026] By adopting the above technical solution, the support rod supports the mounting block, and the mounting block supports the transmission shaft, thereby achieving the effect of the support device supporting the transmission shaft.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The rotating motor rotates the roller to make the second gear drive the first gear to rotate, so that the rotating rod drives the brush to clean the surface of the substrate, thereby making it less likely for the printed product to have white spots due to dust on the surface of the substrate, thereby achieving the effect of improving the printing quality;

[0029] 2. The staff adjusts the distance between the upper pressing plate and the lower pressing plate through the control device so that the distance between the upper pressing plate and the lower pressing plate matches the substrate, thereby making it less likely for the substrate to shake during the printing process, thereby further achieving the effect of improving the printing quality;

[0030] 3. The rotating rod drives the transmission shaft to rotate through the worm gear, and the transmission shaft drives the blast plate to air-dry the printed product, achieving the effect of rapid drying of the ink on the surface of the substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a printing device for an anti-counterfeiting digital label according to an embodiment of the present application;

[0032] Figure 2 is a schematic diagram of the structure of the blast plate and the supporting device in the embodiment of the present application;

[0033] Figure 3 It is a side view of a printing device for an anti-counterfeiting digital label according to an embodiment of the present application;

[0034] Figure 4 This is a partial schematic diagram of the structure between the upper pressing plate and the lower pressing plate in the embodiment of the present application;

[0035] Figure 5 This is a partial cross-sectional view of the internal structure of the slider and the fixed block according to the embodiment of the present application.

[0036] In the figure, 1, machine body; 11, rotating roller; 111, fixing plate; 12, rotating motor; 13, guide groove; 14, supporting roller; 141, positioning plate; 2, rotating rod; 21, brush; 22, worm; 23, transmission shaft; 231, worm wheel; 232, blast plate; 3, linkage device; 31, first gear; 32, second gear; 4, clamping device; 41, upper pressure plate; 411, guide block; 42, lower pressure plate; 43, first spring; 5, control device; 51, threaded rod; 52, nut; 521, third gear; 522, fourth gear; 5221, rotating shaft; 6, fixing block; 61, cavity; 611, positioning block; 612, second spring; 7, adjusting device; 71, bidirectional lead screw; 72, threaded sleeve; 8, guide plate; 9, supporting device; 91, supporting rod; 92, mounting block. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-5 This application is described in further detail.

[0038] The embodiment of the present application discloses a printing device for an anti-counterfeiting digital label.

[0039] refer to Figure 1 and Figure 2 A printing device for anti-counterfeiting digital labels includes a body 1, a rotating roller 11 is arranged inside the body 1, one end of the rotating roller 11 is rotatably connected to the inner wall of the body 1, a rotating motor 12 for driving the rotating roller 11 to rotate is installed on the outer wall of one side of the body 1, a fixing plate 111 is sleeved on one end of the rotating roller 11 close to the rotating motor 12, the fixing plate 111 is fixedly connected to the rotating roller 11, a rotating rod 2 is arranged on one side of the rotating roller 11 of the body 1, both ends of the rotating rod 2 are rotatably connected to the body 1, a brush 21 is fixedly arranged on the circumferential side wall of the rotating rod 2, and a linkage device 3 for driving the rotating rod 2 to rotate is arranged between the rotating rod 2 and the rotating roller 11.

[0040] The rotating motor 12 is started to drive the rotating roller 11 to rotate, and the rotating roller 11 drives the rotating rod 2 to rotate through the linkage device 3, and the rotating rod 2 drives the brush 21 to clean the surface of the substrate.

[0041] refer to Figure 1 The linkage device 3 includes a first gear 31 and a second gear 32. The second gear 32 is sleeved on one end of the rotating roller 11 close to the rotating motor 12, and the second gear 32 is fixedly connected to the rotating roller 11. The first gear 31 is arranged above the second gear 32, and the first gear 31 is meshed with the second gear 32, and the first gear 31 is fixedly connected to one end of the rotating rod 2.

[0042] The rotating roller 11 drives the first gear 31 to rotate, the first gear 31 drives the second gear 32 to rotate, and the second gear 32 drives the rotating rod 2 to rotate.

[0043] refer to Figure 3 and Figure 4 A clamping device 4 is provided on the side of the rotating rod 2 facing the body 1, and the clamping device 4 includes an upper pressing plate 41, a lower pressing plate 42 and a first spring 43. Both ends of the lower pressing plate 42 are fixedly connected to the inner wall of the body 1. The upper pressing plate 41 is arranged directly above the lower pressing plate 42. Two first springs 43 are provided, and the two first springs 43 are fixed between the upper pressing plate 41 and the lower pressing plate 42, and the two first springs 43 are respectively located on both sides of the upper pressing plate 41 and the lower pressing plate 42.

[0044] refer to Figure 4 and Figure 5 Guide blocks 411 are fixedly provided on both sides of the upper pressing plate 41 , and guide grooves 13 slidably matched with the guide blocks 411 are opened along the vertical direction on the inner wall of the machine body 1 facing the guide blocks 411 .

[0045] refer to Figure 1 and Figure 4 A control device 5 for controlling the distance between the upper pressing plate 41 and the lower pressing plate 42 is provided between the two. The control device 5 includes a threaded rod 51 and a nut 52. The control device 5 is provided with two groups. The two threaded rods 51 respectively penetrate the two first springs 43, and one end of the threaded rod 51 away from the lower pressing plate 42 penetrates the upper pressing plate 41 and extends to the outside. The nut 52 corresponds to the threaded rod 51 one by one and the two are threadedly connected. The nut 52 is provided on the side of the upper pressing plate 41 away from the lower pressing plate 42.

[0046] refer to Figure 4 A third gear 521 is fixedly disposed on the circumferential side wall of the nut 52 , a fourth gear 522 is meshedly connected between the two third gears 521 , a rotating shaft 5221 is fixedly disposed inside the fourth gear 522 , and the rotating shaft 5221 passes through the fourth gear 522 and is threadedly connected to the upper pressure plate 41 .

[0047] The staff rotates the rotating shaft 5221 to drive the fourth gear 522 to rotate, the fourth gear 522 drives the third gear 521 to rotate, the third gear 521 drives the nut 52 to rotate, the nut 52 moves in the direction close to the upper pressure plate 41, and the nut 52 compresses the first spring 43 through the upper pressure plate 41, thereby reducing the distance between the upper pressure plate 41 and the lower pressure plate 42; when the staff rotates the rotating shaft 5221 in the opposite direction, the nut 52 moves in the direction away from the upper pressure plate 41. At this time, the first spring 43 releases its elastic force to drive the upper pressure plate 41 to move in the direction away from the lower pressure plate 42, thereby increasing the distance between the upper pressure plate 41 and the lower pressure plate 42.

[0048] refer to Figure 4 and Figure 5Two fixing blocks 6 are fixedly provided on the surface of the lower pressure plate 42 facing the upper pressure plate 41. The two fixing blocks 6 are respectively arranged on the opposite side of the two first springs 43. The opposite side walls of the two fixing blocks 6 are provided with cavities 61 inwardly. A positioning block 611 is slidably connected in the cavity 61. A second spring 612 is fixedly provided between the positioning block 611 and the fixing block 6.

[0049] refer to Figure 1 A support roller 14 is provided on the side of the rotating rod 2 facing the clamping device 4. Both ends of the support roller 14 are rotatably connected to the inner wall of the body 1. Both ends of the support roller 14 are sleeved with positioning pieces 141. The positioning pieces 141 are slidably connected to the support roller 14 along the length direction of the support roller 14.

[0050] refer to Figure 1 and Figure 4 A guide plate 8 is fixedly provided between the positioning block 611 and the positioning piece 141 on the same side, and an adjusting device 7 for adjusting the distance between the two guide plates 8 is provided between the two guide plates 8. The adjusting device 7 includes a bidirectional lead screw 71 and a threaded sleeve 72. Two ends of the bidirectional lead screw 71 are provided with two sections of threads with opposite rotation directions. Two threaded sleeves 72 are provided, and the two threaded sleeves 72 are respectively fixedly connected to the side walls on the opposite sides of the two guide plates 8. The two threaded sleeves 72 are both threadedly connected to the bidirectional lead screw 71, and the two threaded sleeves 72 are located on the two sections of threads.

[0051] The staff rotates the bidirectional lead screw 71 to drive the two guide plates 8 to move toward or away from each other, and the guide plates 8 drive the positioning plates 141 to move toward or away from each other, and at the same time, the guide plates 8 drive the positioning blocks 611 to move toward or away from each other. When the two positioning blocks 611 move toward each other, the positioning blocks 611 compress the second spring 612; when the two positioning blocks 611 move away from each other, the second spring 612 releases its elastic force.

[0052] refer to Figure 1 and Figure 3 A transmission shaft 23 is provided on both sides of the body 1, and a worm wheel 231 is fixedly provided at one end of the transmission shaft 23 close to the rotating rod 2. A worm 22 is sleeved on both ends of the rotating rod 2. The worm 22 is provided between the first gear 31 and the positioning piece 141, and the worm 22 is fixedly connected to the rotating rod 2, and the worm 22 is meshingly connected to the worm wheel 231.

[0053] refer to Figure 2 A plurality of blast plates 232 are fixedly disposed at one end of the transmission shaft 23 away from the rotating rod 2 , and the blast plates 232 are evenly spaced around the transmission shaft 23 .

[0054] refer to Figure 2A supporting device 9 is arranged between the machine body 1 and the transmission shaft 23. Several supporting devices 9 are arranged along the length direction of the transmission shaft 23. The supporting device 9 includes a supporting rod 91 and a mounting block 92. One end of the supporting rod 91 is fixedly connected to the inner wall of the machine body 1. The mounting block 92 is fixedly arranged at the end of the supporting rod 91 away from the machine body 1. The transmission shaft 23 passes through the mounting block 92 and the two are rotatably connected.

[0055] The support rod 91 supports the mounting block 92, and the mounting block 92 supports the transmission shaft 23. The rotating rod 2 drives the worm 22 to rotate, the worm 22 drives the worm wheel 231 to rotate, the worm wheel 231 drives the transmission shaft 23 to rotate, and the transmission shaft 23 drives the blast plate 232 to rotate along its own rotation axis.

[0056] The implementation principle of the printing device of an anti-counterfeiting digital label in the embodiment of the present application is as follows: the staff first rotates the bidirectional lead screw 71 to adjust the spacing between the two positioning pieces 141 and the spacing between the two positioning blocks 611 to be equal to the width of the substrate through the guide plate 8; then the staff drives the fourth gear 522 to drive the third gear 521 to rotate through the rotating shaft 5221, and the third gear 521 adjusts the spacing between the upper pressing plate 41 and the lower pressing plate 42 to match the thickness of the substrate through the nut 52; finally, the staff starts the rotating motor 12 to drive the first gear 31 to drive the second gear 32 to rotate through the rotating roller 11, and the second gear 32 drives the brush 21 to clean the surface of the substrate through the rotating rod 2, and at the same time, the rotating rod 2 drives the worm wheel 231 to drive the transmission shaft 23 to rotate through the worm 22, and the transmission shaft 23 drives the blast plate 232 to rotate along its own rotation axis. Through the above structure, the effect of improving printing quality is achieved.

[0057] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A printing device for anti-counterfeiting digital labels, comprising a body (1), a rotating roller (11) rotatably connected inside the body (1), and a rotating motor (12) for driving the rotating roller (11) to rotate is installed on a side wall of one side of the body (1), characterized in that: A rotating rod (2) is provided on one side of the machine body (1), a brush (21) is fixedly provided on the circumferential side wall of the rotating rod (2), both ends of the rotating rod (2) are rotatably connected to the machine body (1), a linkage device (3) is provided between the rotating rod (2) and the rotating roller (11), the linkage device (3) comprises a first gear (31) and a second gear (32), the first gear (31) is fixedly provided on the circumferential side wall of one end of the rotating rod (2), the second gear (32) is fixedly provided on the circumferential side wall of one end of the rotating roller (11), and the first gear (31) and the second gear (32) are meshingly connected; A clamping device (4) is provided on one side of the machine body (1) close to the rotating rod (2), and the clamping device (4) comprises an upper pressing plate (41), a lower pressing plate (42) and a first spring (43). The two ends of the lower pressing plate (42) are respectively fixedly connected to the machine body (1). The side walls at both ends of the upper pressing plate (41) are fixedly provided with guide blocks (411). The side wall of the machine body (1) facing the guide block (411) is provided with a guide groove (13) slidably matched with the guide block (411). The first spring (43) is fixedly provided between the upper pressing plate (41) and the lower pressing plate (42). Two first springs (43) are provided, and the two first springs (43) are respectively provided on both sides of the upper pressing plate (41) and the lower pressing plate (42). A control device (5) for controlling the distance between the upper pressing plate (41) and the lower pressing plate (42) is provided between the upper pressing plate (41) and the lower pressing plate (42).

2. The printing device for anti-counterfeiting digital labels according to claim 1, characterized in that: The control device (5) comprises a threaded rod (51) and a nut (52). Two threaded rods (51) are provided. The number of first springs (43) and threaded rods (51) is the same and they correspond one to one. The first spring (43) is sleeved on the circumferential side wall of the threaded rod (51). One end of the threaded rod (51) passes through the upper pressure plate (41) and extends to the outside. The other end of the threaded rod (51) is fixedly connected to the lower pressure plate (42). The nut (52) is threadedly connected to the threaded rod (51), and the nut (52) is provided on the side of the upper pressure plate (41) away from the lower pressure plate (42).

3. The printing device for anti-counterfeiting digital labels according to claim 2, characterized in that: A third gear (521) is sleeved on the circumferential side wall of the nut (52); a fourth gear (522) is provided on the side of the upper pressure plate (41) facing the third gear (521); the fourth gear (522) is meshingly connected with the third gear (521); a rotating shaft (5221) is fixed inside the fourth gear (522); the rotating shaft (5221) passes through the fourth gear (522) and is threadedly connected with the lower pressure plate (42).

4. The printing device for anti-counterfeiting digital labels according to claim 2, characterized in that: A support roller (14) is provided on the side of the pressing device (4) facing the rotating rod (2), and both ends of the support roller (14) are rotatably connected to the machine body (1).

5. The printing device for anti-counterfeiting digital labels according to claim 4, characterized in that: Both ends of the support roller (14) are provided with positioning pieces (141), the support roller (14) passes through the positioning pieces (141), and the positioning pieces (141) are slidably connected to the support roller (14) along the length direction of the support roller (14), and the upper pressure plate (41) is fixedly provided with fixing blocks (6) on the opposite sides of the two first springs (43), and the opposite side walls of the two fixing blocks (6) are provided with cavities (61), and the cavities (61) are slidably connected with positioning blocks (611), and a second spring (612) is fixedly provided between the positioning block (611) and the fixing block (6), and an adjustment device (7) for adjusting the positions of the two is provided between the positioning block (611) and the positioning piece (141).

6. The printing device for anti-counterfeiting digital labels according to claim 5, characterized in that: A guide plate (8) is fixedly arranged between the positioning block (611) and the positioning sheet (141) located on the same side, and the adjustment device (7) is arranged between the two guide plates (8).

7. The printing device for anti-counterfeiting digital labels according to claim 6, characterized in that: The adjusting device (7) comprises a bidirectional lead screw (71) and a threaded sleeve (72). Both ends of the bidirectional lead screw (71) are provided with threads, and the two threads have opposite rotation directions. Two threaded sleeves (72) are provided. The two threaded sleeves (72) are fixedly arranged on the side walls of the two guide plates (8) on the opposite sides. The two threaded sleeves (72) are both threadedly connected to the bidirectional lead screw (71), and the two threaded sleeves (72) are respectively arranged on the two threads.

8. The printing device for anti-counterfeiting digital labels according to claim 1, characterized in that: Both ends of the rotating rod (2) are sleeved with a worm (22), and the worm (22) and the rotating rod (2) are fixedly connected. A transmission shaft (23) is provided on one side of the worm (22), and a worm wheel (231) is fixedly provided at one end of the transmission shaft (23) close to the worm (22), and the worm wheel (231) and the worm (22) are meshingly connected. A blast plate (232) is fixedly provided at one end of the transmission shaft (23) away from the worm (22), and a supporting device (9) is provided between the transmission shaft (23) and the machine body (1).

9. The printing device for anti-counterfeiting digital labels according to claim 8, characterized in that: The support device (9) comprises a support rod (91) and a mounting block (92); the support rod (91) is fixedly connected to the machine body (1); the mounting block (92) is fixedly arranged at one end of the support rod (91) away from the machine body (1); the transmission shaft (23) passes through the mounting block (92) and the two are rotatably connected.

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