Light-passing film structure of digital printing machine

Abstract

The utility model relates to the technical field of light-passing film structures, and discloses a light-passing film structure of a digital printing machine, which comprises a mounting shell and a support roller, and further comprises a spring, a connecting frame, a roller, a bubble removing mechanism and a guide mechanism, the support roller is rotatably connected in the mounting shell, the bubble removing mechanism is arranged in the mounting shell, and the guide mechanism is arranged in the mounting shell. A guide mechanism is arranged in the mounting shell, a spring is arranged in the bubble removing mechanism, a connecting frame is fixedly connected to the bottom of the spring, a roller is rotatably connected to the interior of the connecting frame, and the spring pushes the roller to be matched with the supporting roller, so that bubbles on the surface of the printed matter are extruded out. The first motor drives the threaded rod to ascend and descend, so that the height of the roller is adjusted according to the thickness of the printed matter, the roller is pushed by the spring to press downwards, the roller is matched with the supporting roller to extrude bubbles in the printed matter out, bubble residues are prevented, and the attractiveness and quality of products are guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of over-laminating film structures, in particular to an over-laminating film structure for a digital printing machine. Background Art

[0002] The over-laminating film of a digital printing machine is a post-printing processing technology, mainly used to improve the quality and durability of printed products. This technology involves covering a transparent plastic film on the surface of the printed product through a laminating machine after printing to enhance the protection and aesthetics of the printed product.

[0003] In the prior art, the transparent plastic film is heated by a hot pressing roller and hot-pressed onto the surface of the printed product. However, during the hot pressing process, since there is still air between the transparent plastic film and the printed product, bubbles will be generated on the surface of the printed product after lamination, which not only seriously affects the product quality but also has poor aesthetics. Therefore, it is necessary to improve an over-laminating film structure for a digital printing machine to solve the above problems. Summary of the Utility Model

[0004] In order to overcome the problem that air remains between the transparent plastic film and the printed product, which will cause bubbles to appear on the surface of the printed product after lamination and seriously affect the product quality.

[0005] The technical solution of the utility model is: an over-laminating film structure for a digital printing machine, including an installation shell and a support roller, and also including a spring, a connecting frame, a roller, a defoaming mechanism and a guiding mechanism. The support roller is rotatably connected inside the installation shell. A defoaming mechanism is arranged inside the installation shell. A guiding mechanism is arranged inside the installation shell. A spring is arranged inside the defoaming mechanism. The bottom of the spring is fixedly connected with a connecting frame. The roller is rotatably connected inside the connecting frame. The spring is used to push the roller to cooperate with the support roller to extrude the bubbles on the surface of the printed product.

[0006] Preferably, the second motor makes the first guiding roller and the second guiding roller rotate synchronously and in the same direction through a synchronous belt, so as to cooperate with the hot pressing roller to guide the printed product and at the same time hot-press the plastic film on the surface of the printed product. At the same time, the first motor drives the nut to rotate, and then the threaded rod connected by the nut rises and falls. The threaded rod is limited by a limiting sleeve and thus moves linearly up and down. During the lifting process, the height position of the roller is adjusted according to the thickness of the printed product. The spring can make the roller cooperate with the support roller to press on the surface of the printed product, so as to push out the bubbles on the surface of the printed product.

[0007] Preferably, four springs are provided, and the four springs are symmetrically fixedly connected to the top of the connecting frame. The upper and lower positions of the roller and the support roller are flush with each other. Connecting the connecting frame through four springs enables the connecting frame to be evenly subjected to a thrust force to prevent deviation.

[0008] Preferably, the bubble removal mechanism includes a limiting sleeve, which is fixedly connected to the interior of the mounting shell, a first motor is fixedly connected to the top of the mounting shell, a first gear is fixedly connected to the output end of the first motor, a second gear is meshed on the outside of the first gear, a rotating ring is fixedly connected to the inside of the second gear, the rotating ring is rotatably connected to the inside of the mounting shell, a nut is fixedly connected to the top of the rotating ring, a threaded rod is threadedly connected to the inside of the nut, the threaded rod is slidably connected to the inside of the limiting sleeve, a connecting plate is fixedly connected to the bottom of the connecting plate, a first limiting rod is fixedly connected to the top of the connecting plate, the first limiting rod is slidably connected to the inside of the mounting shell, a second limiting rod is slidably connected to the inside of the connecting plate, a connecting frame is fixedly connected to the bottom of the second limiting rod, a spring is fixedly connected between the connecting plate and the connecting frame, and the height of the roller is adjusted by the first motor, so that the roller cooperates with the supporting roller to squeeze out the bubbles inside the printed product.

[0009] Preferably, the mounting shell is provided with sliding grooves at corresponding positions of the connecting plate and the connecting frame, and the connecting plate and the connecting frame slide in the sliding grooves respectively, and the connecting plate and the connecting frame are limited and guided by the sliding grooves to prevent the connecting plate and the limiting sleeve from rotating and tilting by themselves.

[0010] Preferably, the limiting sleeve is provided with a through hole at a corresponding position of the threaded rod, and the threaded rod is slidably connected inside the through hole, and the threaded rod is limited by the through hole so that the threaded rod cannot rotate but can move.

[0011] Preferably, the mounting shell is provided with a limiting groove at a corresponding position of the rotating ring, and the rotating ring is rotatably connected inside the limiting groove to limit the rotating ring, thereby ensuring that the rotating ring rotates stably and does not separate from the mounting shell.

[0012] Preferably, the guiding mechanism includes a first guide roller, which is rotatably connected to the inside of the mounting shell, a first pulley is fixedly connected to the outside of the first guide roller, a third gear is fixedly connected to the outside of the first guide roller, a fourth gear is meshed with the outside of the third gear, a hot pressing roller is fixedly connected to the inside of the fourth gear, the hot pressing roller is rotatably connected to the inside of the mounting shell, a second motor is fixedly connected to the left side of the mounting shell, a second guide roller is fixedly connected to the output end of the second motor, a second pulley is fixedly connected to the outside of the second guide roller, a synchronous belt is transmission-connected between the second pulley and the first pulley, the second guide roller and the first guide roller are synchronously rotated to guide and convey the printed matter, and can cooperate with the hot pressing roller for hot lamination.

[0013] Beneficial effects of the utility model:

[0014] 1. The first motor drives the threaded rod to rise and fall, so as to adjust the height of the roller according to the thickness of the printed matter. The spring pushes the roller downward, so that the roller can cooperate with the supporting roller to squeeze out the bubbles inside the printed matter, prevent the bubbles from remaining, and ensure the beauty and quality of the product.

[0015] 2. The second motor drives the second guide roller to rotate synchronously with the first guide roller through a synchronous belt, so as to cooperate with the hot pressing roller to laminate the surface of the printed matter while guiding and conveying the printed matter, thereby protecting the printed matter through lamination to enhance the protection and beauty of the printed matter. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the external structure of the present utility model;

[0017] Figure 2 It is a schematic diagram of the bubble removing mechanism structure of the present utility model;

[0018] Figure 3 It is a schematic diagram of the partial structure of the bubble removing mechanism of the present utility model;

[0019] Figure 4 It is a schematic diagram of the disassembled structure of the bubble removing mechanism of the present utility model;

[0020] Figure 5 It is a schematic diagram of the guiding mechanism structure of the present utility model.

[0021] Description of the reference numerals: 1. Installation shell; 21. Limiting sleeve; 22. First motor; 23. First gear; 24. Second gear; 25. Rotating ring; 26. Nut; 27. Threaded rod; 28. Connecting plate; 29. First limiting rod; 210. Second limiting rod; 211. Connecting frame; 212. Spring; 213. Drum; 31. First guide roller; 32. First belt pulley; 33. Third gear; 34. Fourth gear; 35. Hot pressing roller; 36. Second motor; 37. Second guide roller; 38. Second belt pulley; 39. Synchronous belt; 4. Support roller. Detailed Embodiment

[0022] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0023] Please refer to Figures 1 - 5, the present utility model provides an embodiment: a light-passing film structure for a digital printing machine, including a mounting shell 1 and a support roller 4, and further including a spring 212, a connecting frame 211, a roller 213, a defoaming mechanism and a guiding mechanism. A support roller 4 is rotatably connected inside the mounting shell 1. A defoaming mechanism is arranged inside the mounting shell 1. A guiding mechanism is arranged inside the mounting shell 1. A spring 212 is arranged inside the defoaming mechanism. The bottom of the spring 212 is fixedly connected to a connecting frame 211. A roller 213 is rotatably connected inside the connecting frame 211. The spring 212 is used to push the roller 213 to cooperate with the support roller 4 to extrude the bubbles on the surface of the printed matter. The second motor 36 makes the first guiding roller 31 and the second guiding roller 37 rotate synchronously and in the same direction through a synchronous belt 39, so as to cooperate with the hot pressing roller 35 to guide the printed matter and at the same time hot press the plastic film on the surface of the printed matter. At the same time, the first motor 22 drives the nut 26 to rotate, so as to drive the threaded rod 27 connected by thread to lift through the rotation of the nut 26. The threaded rod 27 is limited by a limiting sleeve 21, so as to move linearly up and down. During the lifting, the height position of the roller 213 is adjusted according to the thickness of the printed matter. The spring 212 can make the roller 213 cooperate with the support roller 4 to press on the surface of the printed matter, so as to push out the bubbles on the surface of the printed matter. Four springs 212 are provided, and the four springs 212 are symmetrically and fixedly connected to the top of the connecting frame 211. The upper and lower positions of the roller 213 and the support roller 4 are flush with each other. The connecting frame 211 is connected by four springs 212, so that the connecting frame 211 is evenly subjected to a thrust force to prevent deviation.

[0024] Please refer to Figures 1 - 4In this embodiment, the defoaming mechanism includes a limiting sleeve 21, which is fixedly connected to the inside of the mounting shell 1, a first motor 22 is fixedly connected to the top of the mounting shell 1, a first gear 23 is fixedly connected to the output end of the first motor 22, a second gear 24 is meshed on the outside of the first gear 23, a rotating ring 25 is fixedly connected to the inside of the second gear 24, the rotating ring 25 is rotatably connected to the inside of the mounting shell 1, a nut 26 is fixedly connected to the top of the rotating ring 25, a threaded rod 27 is threadedly connected to the inside of the nut 26, the threaded rod 27 is slidably connected to the inside of the limiting sleeve 21, a connecting plate 28 is fixedly connected to the bottom of the threaded rod 27, a first limiting rod 29 is fixedly connected to the top of the connecting plate 28, the first limiting rod 29 is slidably connected to the inside of the mounting shell 1, a second limiting rod 210 is slidably connected to the inside of the connecting plate 28, a connecting frame 211 is fixedly connected to the bottom of the second limiting rod 210, and a spring 2 12 is fixedly connected between the connecting plate 28 and the connecting frame 211, and the height of the roller 213 is adjusted by the first motor 22, so that the roller 213 cooperates with the supporting roller 4 to squeeze out the bubbles inside the printed matter, and the mounting shell 1 is provided with a slide groove at the corresponding position of the connecting plate 28 and the connecting frame 211, and the connecting plate 28 and the connecting frame 211 slide in the slide groove respectively, and the connecting plate 28 and the connecting frame 21 are limited and guided by the slide groove to prevent the connecting plate 28 and the limiting sleeve 21 from rotating and tilting by themselves, and the limiting sleeve 21 is provided with a through hole at the corresponding position of the threaded rod 27, and the threaded rod 27 is slidably connected in the through hole, and the threaded rod 27 is limited by the through hole, so that the threaded rod 27 cannot rotate but can move, and the mounting shell 1 is provided with a limiting groove at the corresponding position of the rotating ring 25, and the rotating ring 25 is rotatably connected in the limiting groove, and the rotating ring 25 is limited to ensure that the rotating ring 25 rotates stably and will not separate from the mounting shell 1.

[0025] See also Figure 1 , Figure 5 In this embodiment, the guide mechanism includes a first guide roller 31, which is rotatably connected to the inside of the mounting shell 1, a first pulley 32 is fixedly connected to the outside of the first guide roller 31, a third gear 33 is fixedly connected to the outside of the first guide roller 31, a fourth gear 34 is meshed with the outside of the third gear 33, a hot pressing roller 35 is fixedly connected to the inside of the fourth gear 34, the hot pressing roller 35 is rotatably connected to the inside of the mounting shell 1, a second motor 36 is fixedly connected to the left side of the mounting shell 1, a second guide roller 37 is fixedly connected to the output end of the second motor 36, a second guide roller 38 is fixedly connected to the outside of the second guide roller 37, a synchronous belt 39 is transmission-connected between the second pulley 38 and the first pulley 32, and the second guide roller 37 is synchronously rotated with the first guide roller 31 to guide and transport the printed matter, and can cooperate with the hot pressing roller 35 for hot lamination.

[0026] When working, the second motor 36 drives the second guide roller 37, the second guide roller 37 drives the second pulley 38, the second pulley 38 drives the synchronous belt 39, the synchronous belt 39 drives the first pulley 32, the first pulley 32 drives the first guide roller 31. At the same time, the rotation of the first guide roller 31 drives the third gear 33, the third gear 33 drives the fourth gear 34, and the fourth gear 34 drives the hot pressing roller 35. Then, while the second guide roller 37 and the first guide roller 31 rotate synchronously, the printed matter can be laminated by the hot pressing roller 35. The first motor 22 drives the first gear 23, the first gear 23 drives the second gear 24, the second gear 24 drives the rotating ring 25, the rotating ring 25 drives the nut 26, the rotation of the nut 26 drives the threaded rod 27, and the threaded rod 27 slides inside the limit sleeve 21 to adjust the position of the lifting connecting plate 28. The connecting plate 28 is limited by the first limiting rod 29, thereby adjusting the height of the drum 213. The printed matter will contact the support roller 4, and the drum 213 cooperates with the support roller 4 to press the printed matter. The spring 212 will push the connecting frame 211 with a downward pressure, and the connecting frame 211 is limited by the second limiting rod 210, thereby squeezing out the air bubbles inside the printed matter.

[0027] Through the above steps, the height of the drum is adjusted according to the thickness of the printed matter. The spring is used to push the drum downward to press, so that the drum cooperates with the support roller to squeeze out the air bubbles inside the printed matter, preventing air bubbles from remaining, so as to solve the problem that if there is still air between the transparent plastic film and the printed matter, it will cause bubbles on the surface of the printed matter after lamination, seriously affecting the product quality.

Claims

1. A light-transmitting film structure for a digital printing machine, comprising a mounting shell (1) and a support roller (4), characterized in that: The invention also comprises a spring (212), a connecting frame (211), a roller (213), a debubble mechanism and a guide mechanism; the interior of the mounting shell (1) is rotatably connected to a support roller (4); the interior of the mounting shell (1) is provided with a debubble mechanism; the interior of the mounting shell (1) is provided with a guide mechanism; the interior of the debubble mechanism is provided with a spring (212); the bottom of the spring (212) is fixedly connected to the connecting frame (211); the interior of the connecting frame (211) is rotatably connected to a roller (213); the roller (213) is pushed by the spring (212) to cooperate with the support roller (4), thereby squeezing out bubbles on the surface of the printed matter.

2. The light-passing film structure of a digital printing machine according to claim 1, characterized in that: Four springs (212) are provided, and the four springs (212) are symmetrically fixedly connected to the top of the connecting frame (211), and the upper and lower positions of the roller (213) and the supporting roller (4) are flush and corresponding.

3. The light-passing film structure of a digital printing machine according to claim 1, characterized in that: The defoaming mechanism comprises a limiting sleeve (21), the limiting sleeve (21) is fixedly connected to the inside of the mounting shell (1), a first motor (22) is fixedly connected to the top of the mounting shell (1), a first gear (23) is fixedly connected to the output end of the first motor (22), a second gear (24) is meshed with the outside of the first gear (23), a rotating ring (25) is fixedly connected to the inside of the second gear (24), the rotating ring (25) is rotatably connected to the inside of the mounting shell (1), a nut (26) is fixedly connected to the top of the rotating ring (25), and the internal thread of the nut (26) is connected to the A threaded rod (27) is connected, the threaded rod (27) is slidably connected to the inside of the limiting sleeve (21), the bottom of the threaded rod (27) is fixedly connected to a connecting plate (28), the top of the connecting plate (28) is fixedly connected to a first limiting rod (29), the first limiting rod (29) is slidably connected to the inside of the mounting shell (1), the inside of the connecting plate (28) is slidably connected to a second limiting rod (210), a connecting frame (211) is fixedly connected to the bottom of the second limiting rod (210), and a spring (212) is fixedly connected between the connecting plate (28) and the connecting frame (211).

4. The light-passing film structure of a digital printing machine according to claim 3, characterized in that: The mounting shell (1) is provided with sliding grooves at corresponding positions of the connecting plate (28) and the connecting frame (211), and the connecting plate (28) and the connecting frame (211) slide inside the sliding grooves respectively.

5. The light-transmitting film structure of a digital printing machine according to claim 3, characterized in that: The limiting sleeve (21) is provided with a through hole at a position corresponding to the threaded rod (27), and the threaded rod (27) is slidably connected inside the through hole.

6. The light-passing film structure of a digital printing machine according to claim 3, characterized in that: The mounting shell (1) is provided with a limiting groove at a position corresponding to the rotating ring (25), and the rotating ring (25) is rotatably connected inside the limiting groove.

7. The light-passing film structure of a digital printing machine according to claim 1, characterized in that: The guide mechanism comprises a first guide roller (31), the first guide roller (31) is rotatably connected to the inside of the mounting shell (1), the outside of the first guide roller (31) is fixedly connected to a first pulley (32), the outside of the first guide roller (31) is fixedly connected to a third gear (33), the outside of the third gear (33) is meshed with a fourth gear (34), the inside of the fourth gear (34) is fixedly connected to a hot pressing roller (35), the hot pressing roller (35) is rotatably connected to the inside of the mounting shell (1), the left side of the mounting shell (1) is fixedly connected to a second motor (36), the output end of the second motor (36) is fixedly connected to a second guide roller (37), the outside of the second guide roller (37) is fixedly connected to a second pulley (38), and a synchronous belt (39) is transmission-connected between the second pulley (38) and the first pulley (32).

Images