Printing device for preparing environment-friendly label

Abstract

The invention belongs to the technical field of printing devices, and discloses an environment-friendly label preparation printing device which comprises a base, a printing unit, an unwinding unit and a winding unit, the printing unit, the unwinding unit and the winding unit are all installed at the top end of the base, and the unwinding unit and the winding unit are arranged on the two sides of the printing unit correspondingly. When the environment-friendly label is prepared, firstly, one end of a base material is placed between the upper pressing roller and the lower pressing roller, penetrates through the upper pressing roller and the lower pressing roller, extends towards one side of the printing unit and is finally installed in the unwinding unit, then a motor is started, and when the motor is started, a first rotating shaft is driven to rotate; the first rotating shaft rotates to drive the upper pressing roller to rotate, a base material is conveyed to one side of the printing unit to be printed, pressure is applied to the base material through the upper pressing roller and the lower pressing roller, unevenness of the surface of the base material can be smoothened, and therefore the uniformity degree of ink attachment is ensured, and the printing quality of labels is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of printing devices, and specifically relates to a printing device for preparing environmental protection labels. Background Technique

[0002] The printing device is the core component of a printing press, undertaking the crucial task of transferring the graphic information on the printing plate to the printing substrate (such as paper, plastic, metal, etc.). It realizes the transfer, distribution, and imprinting of ink through mechanical, electrical, or pneumatic systems, and is an indispensable device in the modern printing industry; The current printing device mainly consists of an unwinding unit, a printing unit, and a winding unit. When preparing environmental protection labels, the unwinding unit is responsible for smoothly unwinding and transporting the substrate to be printed to the printing unit. The printing unit, through precise mechanical structures and ink transfer systems, accurately transfers the graphic information onto the substrate, while the winding unit is responsible for neatly winding the printed substrate for subsequent processing and use. Through their cooperation, the efficient and stable production of environmental protection labels is achieved; In the actual production process of environmental protection labels, the flatness of the substrate surface plays a decisive role in the printing quality. However, affected by the interweaving of various complex factors, the substrate surface is extremely prone to unevenness at the micro or macro level (such as factors like improper humidity adjustment treatment or surface treatment, inappropriate storage conditions, etc.). When using an uneven substrate surface to prepare labels, the ink is difficult to adhere evenly, easily resulting in local ink being too thick or too thin, thus affecting the printing quality of the labels. Summary of the Invention

[0003] The purpose of the present invention is to provide a printing device for preparing environmental protection labels to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A printing device for preparing environmental protection labels, including a base, a printing unit, an unwinding unit, and a winding unit. The printing unit, unwinding unit, and winding unit are all installed at the top of the base. The unwinding unit and the winding unit are respectively arranged on both sides of the printing unit, and a smoothing assembly is arranged on one side of the unwinding unit; Among them, the smoothing assembly includes mounting seats arranged on one side of the unwinding unit. There are two mounting seats, and both mounting seats are fixedly installed at the top of the base. An upper pressure roller and a lower pressure roller are installed between the two mounting seats. Both ends of the upper pressure roller are fixedly connected to a first rotating shaft, and one end of one of the first rotating shafts is installed with a motor.

[0005] As a further technical solution of the present invention, both ends of the lower pressing roller are fixedly connected with second rotating shafts. Sliders are arranged at the ends of the two second rotating shafts away from the lower pressing roller. A guiding shaft is slidably installed inside the slider, and the guiding shaft is fixedly installed inside the mounting seat. A first spring is arranged at the bottom end of the slider.

[0006] As a further technical solution of the present invention, the second rotating shaft is rotatably connected with the slider.

[0007] As a further technical solution of the present invention, outer shells are arranged on the outer walls of the upper pressing roller and the lower pressing roller. The outer shell is fixedly connected with the mounting seat. First dust suction pipes are evenly installed inside the outer shell. Each of the first dust suction pipes is fixedly connected through a first connecting pipe. One end of the first connecting pipe is fixedly installed with a second connecting pipe. A dust suction pump is installed at the end of the second connecting pipe away from the first connecting pipe, and the dust suction pump is arranged on one side of the mounting seat.

[0008] As a further technical solution of the present invention, second dust suction pipes are evenly installed inside the outer shell, and the second dust suction pipes are fixedly connected with the first connecting pipe.

[0009] As a further technical solution of the present invention, through holes are evenly formed in the inner wall of the outer shell, and the through holes are arranged above the upper pressing roller.

[0010] As a further technical solution of the present invention, a baffle is arranged inside the outer shell. The baffle is arranged at the top end of the through hole. Both ends of the baffle are fixedly connected with limiting shafts. The two limiting shafts are slidably installed on the inner wall of the outer shell. One end of the limiting shaft is fixedly connected with a connecting plate. The connecting plate is embedded inside the mounting seat. A convex block is arranged on one side of the bottom end of the connecting plate. The convex block is fixedly installed on the outer wall of a rotating disk. The rotating disk is rotatably installed inside the mounting seat. A second gear is fixedly connected to one side of the rotating disk. The bottom end of the second gear is meshed with a first gear, and the first gear is fixedly installed on the outer wall of a first rotating shaft.

[0011] As a further technical solution of the present invention, second springs are sleeved on the outer walls of the two limiting shafts, and the second springs are arranged at the top end of the baffle.

[0012] As a further technical solution of the present invention, the inner wall diameter of the second gear is ten times that of the inner wall diameter of the first gear, and N is a positive integer.

[0013] As a further technical solution of the present invention, a sponge is installed on the inner wall of the outer shell, and the sponge is arranged at the bottom of the through hole.

[0014] The beneficial effects of the present invention are as follows: 1. With the provision of the flattening component, when preparing the environmental protection label, first place one end of the substrate between the upper pressing roller and the lower pressing roller, and extend it through the upper pressing roller and the lower pressing roller to one side of the printing unit and finally install it in the unwinding unit. Then, start the motor. When the motor starts, it drives the first rotating shaft to rotate. The rotation of the first rotating shaft drives the rotation of the upper pressing roller, conveying the substrate to one side of the printing unit for printing. By applying pressure to the substrate through the upper pressing roller and the lower pressing roller, it helps to flatten the unevenness on the surface of the substrate, thereby ensuring the uniformity of ink adhesion and improving the printing quality of the label.

[0015] 2. The present invention sucks dust from the substrate through the outer shell. During operation, start the dust suction pump, connect it to the first connecting pipe through the second connecting pipe, and suck away the impurities on the surface of the substrate through the first dust suction pipe, preventing dust from adhering to the surface of the substrate to form a physical barrier and hindering the intermolecular force between the ink and the substrate. Sucking away the dust helps to improve the printing quality.

[0016] 3. The present invention lubricates the surface of the upper pressing roller. During operation, the rotation of the first rotating shaft drives the rotation of the first gear, the rotation of the first gear drives the rotation of the second gear, the rotation of the second gear drives the rotation of the rotating disc, and the rotation of the rotating disc drives the rotation of the convex block. When the convex block rotates and contacts the connecting plate, it pushes the connecting plate upward. The movement of the connecting plate drives one of the limiting shafts to move upward, and the movement of the limiting shaft drives the movement of the baffle, causing the baffle to move upward to open the through hole. The lubricating fluid inside the outer shell is discharged from the through hole to lubricate the surface of the upper pressing roller. The lubricating fluid can not only help the ink to be evenly transferred, avoid the phenomena of "flying ink" or "ink dots" caused by uneven friction, but also reduce the direct contact between the metal and the material, which helps to extend the service life of the upper pressing roller. Description of the Drawings

[0017] Figure 1 is the schematic diagram of the overall structure of the present invention; Figure 2 is the schematic cross-sectional view of the structure at the mounting seat of the present invention; Figure 3 is the schematic cross-sectional view of the structure at the outer shell of the present invention; Figure 4 is the present invention Figure 3 the enlarged schematic view of the structure at A in; Figure 5 is the schematic diagram of the structure at the lower pressing roller of the present invention; Figure 6 is the schematic diagram of the structure at the first dust suction pipe and the second dust suction pipe of the present invention.

[0018] In the figure: 1, base; 2, printing unit; 3, unwinding unit; 4, rewinding unit; 5, mounting seat; 6, upper pressing roller; 7, first rotating shaft; 8, motor; 9, second rotating shaft; 10, slider; 11, guide shaft; 12, first spring; 13, housing; 14, first suction pipe; 15, first connecting pipe; 16, second connecting pipe; 17, suction pump; 18, second suction pipe; 19, first gear; 20, second gear; 21, rotating disk; 22, bump; 23, connecting plate; 24, through hole; 25, baffle; 26, limiting shaft; 27, second spring; 28, sponge; 29, lower pressing roller. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figures 1 to 6 shown, in the embodiment of the present invention, a printing device for preparing environmental protection labels includes a base 1, a printing unit 2, an unwinding unit 3, and a rewinding unit 4. The printing unit 2, the unwinding unit 3, and the rewinding unit 4 are all installed at the top of the base 1. The unwinding unit 3 and the rewinding unit 4 are respectively arranged on both sides of the printing unit 2, and a flattening assembly is arranged on one side of the unwinding unit 3; Among them, the flattening assembly includes mounting seats 5 arranged on one side of the unwinding unit 3. There are two mounting seats 5, and both mounting seats 5 are fixedly installed at the top of the base 1. An upper pressing roller 6 and a lower pressing roller 29 are installed between the two mounting seats 5. Both ends of the upper pressing roller 6 are fixedly connected to a first rotating shaft 7, and one end of one of the first rotating shafts 7 is installed with a motor 8.

[0021] Preferably, electric heating wires are arranged inside the upper pressing roller 6 and the lower pressing roller 29 for preheating the base material to make the temperature of the base material uniform and avoid deformation caused by temperature difference; The upper pressing roller 6 and the lower pressing roller 29 are made of elastic materials such as rubber, silicone, polyurethane, etc. They can adapt to the small thickness change of the base material through their own elasticity and avoid deformation or damage of the base material caused by excessive local pressure; Through the setting of the flattening assembly, when preparing environmental protection labels, first place one end of the base material between the upper pressing roller 6 and the lower pressing roller 29, and pass through the upper pressing roller 6 and the lower pressing roller 29 and extend to one side of the printing unit 2 and finally install it in the unwinding unit 3; Then, by starting the motor 8, when the motor 8 starts, it drives the first rotating shaft 7 to rotate. The rotation of the first rotating shaft 7 drives the rotation of the upper pressure roller 6, and conveys the substrate to one side of the printing unit 2 for printing. Pressure is applied to the substrate by the upper pressure roller 6 and the lower pressure roller 29, which helps to smooth the unevenness on the surface of the substrate, thereby ensuring the evenness of ink adhesion and improving the printing quality of the label. The synchronous rotation of the upper pressure roller 6 and the unwinding unit 3 helps to ensure the stable conveyance of the substrate under a constant tension, preventing stretching or slack caused by speed differences.

[0022] Such as Figure 2 and Figure 5 As shown, both ends of the lower pressure roller 29 are fixedly connected with second rotating shafts 9. Sliders 10 are arranged at the ends of the two second rotating shafts 9 away from the lower pressure roller 29. A guide shaft 11 is slidably installed inside the slider 10. The guide shaft 11 is fixedly installed inside the mounting seat 5. A first spring 12 is arranged at the bottom end of the slider 10.

[0023] Due to the elastic potential energy of the first spring 12, the slider 10 always has a tendency to move upward, and through the connection of the second rotating shaft 9, the lower pressure roller 29 is kept in an upward moving posture to cooperate with the upper pressure roller 6 to press the substrate tightly, which helps to convert the local concentrated pressure into surface pressure and avoid the risk of indentation or fracture of the substrate due to rigid contact.

[0024] Such as Figure 2 and Figure 5 As shown, the second rotating shaft 9 and the slider 10 are rotatably connected.

[0025] Such as Figure 2 and Figure 5 As shown, outer shells 13 are arranged on the outer walls of the upper pressure roller 6 and the lower pressure roller 29. The outer shells 13 are fixedly connected with the mounting seat 5. First suction pipes 14 are evenly installed inside the outer shells 13. Each first suction pipe 14 is fixedly connected through a first connecting pipe 15. One end of the first connecting pipe 15 is fixedly installed with a second connecting pipe 16. A dust suction pump 17 is installed at the end of the second connecting pipe 16 away from the first connecting pipe 15. The dust suction pump 17 is arranged on one side of the mounting seat 5.

[0026] The input end of the dust suction pump 17 is connected with the second connecting pipe 16 through a hose. The connection part of the second connecting pipe 16 and the first connecting pipe 15 is flexibly arranged to ensure the stability of the connection when the lower pressure roller 29 moves up and down. During operation, start the dust suction pump 17, connect it through the second connecting pipe 16 and the first connecting pipe 15, and suck away the impurities on the surface of the substrate through the first suction pipe 14, preventing dust from adhering to the surface of the substrate to form a physical barrier and hindering the intermolecular force between the ink and the substrate. Sucking away the dust helps to improve the printing quality. Two groups of first dust suction pipes 14 are symmetrically distributed to suck dust from both the top and bottom of the substrate, removing the back contaminants, preventing air bubbles in the adhesive layer and bonding failure, and further improving the printing quality.

[0027] As Figure 2 and Figure 5 shown, the second dust suction pipes 18 are evenly installed inside the housing 13, and the second dust suction pipes 18 are fixedly connected to the first connecting pipes 15.

[0028] The surfaces of the upper pressure roller 6 and the lower pressure roller 29 are sucked by the second dust suction pipes 18 to prevent dust or impurities from adhering to the surfaces of the upper pressure roller 6 and the lower pressure roller 29 during use. Hard particles such as metal chips on the surfaces of the upper pressure roller 6 and the lower pressure roller 29 will not only scratch the substrate, resulting in waste products, but also cause uneven ink transfer, forming stripes or dot gain. Sucking the surfaces of the upper pressure roller 6 and the lower pressure roller 29 helps to enhance the equipment stability and ensure the label performance.

[0029] As Figure 3 and Figure 4 shown, through holes 24 are evenly formed in the inner wall of the housing 13, and the through holes 24 are arranged above the upper pressure roller 6.

[0030] As Figure 3 and Figure 4 shown, a baffle 25 is arranged inside the housing 13, the baffle 25 is arranged at the top of the through hole 24, both ends of the baffle 25 are fixedly connected with limiting shafts 26, and the two limiting shafts 26 are both slidably installed on the inner wall of the housing 13. The top of one of the limiting shafts 26 is fixedly connected with a connecting plate 23, the connecting plate 23 is embedded inside the mounting seat 5, a convex block 22 is arranged on one side of the bottom end of the connecting plate 23, the convex block 22 is fixedly installed on the outer wall of the rotating disc 21, the rotating disc 21 is rotatably installed inside the mounting seat 5, a second gear 20 is fixedly connected to one side of the rotating disc 21, and the bottom end of the second gear 20 is meshed with a first gear 19, and the first gear 19 is fixedly installed on the outer wall of the first rotating shaft 7.

[0031] A liquid storage cavity is formed inside the housing 13 on the outer wall of the upper pressure roller 6, and a lubricating liquid for lubricating the surface of the upper pressure roller 6 is stored inside.

[0032] By applying a lubricating fluid to the surface of the upper pressure roller 6, during operation, the rotation of the first rotating shaft 7 drives the rotation of the first gear 19, the rotation of the first gear 19 drives the rotation of the second gear 20, the rotation of the second gear 20 drives the rotation of the rotating disk 21, and the rotation of the rotating disk 21 drives the rotation of the convex block 22. When the convex block 22 rotates and contacts the connecting plate 23, it pushes the connecting plate 23 upward. The movement of the connecting plate 23 drives one of the limiting shafts 26 to move upward, and the movement of the limiting shaft 26 drives the movement of the baffle 25, causing the baffle 25 to move upward to open the through hole 24. The lubricating fluid inside the housing 13 is discharged from the through hole 24 to lubricate the surface of the upper pressure roller 6. The lubricating fluid can not only help the ink to be evenly transferred, avoiding phenomena such as "flying ink" or "ink dots" caused by uneven friction, but also reduce the direct contact between metal and materials, contributing to extending the service life of the upper pressure roller 6.

[0033] As Figure 3 and Figure 4 shown, a second spring 27 is sleeved on the outer walls of both limiting shafts 26, and the second spring 27 is arranged at the top of the baffle 25.

[0034] When the baffle 25 moves upward, the second spring 27 deforms to store elastic potential energy. When the convex block 22 moves away from the connecting plate 23, the elastic potential energy is released through the second spring 27 to make the baffle 25 move downward to close the through hole 24.

[0035] As Figure 3 and Figure 4 shown, the inner wall diameter of the second gear 20 is ten times that of the inner wall diameter of the first gear 19, and N is a positive integer.

[0036] The first gear 19 is set as a sector gear; By reducing the rotation speed of the second gear 20 through the gear ratio between the first gear 19 and the second gear 20, after the first gear 19 rotates ten N circles, the second gear 20 rotates a certain angle, so that the convex block 22 contacts and then separates from the connecting plate 23 once, controlling the liquid discharge once, reducing the liquid discharge frequency, and preventing over-lubrication.

[0037] As Figure 3 and Figure 4 shown, a sponge 28 is installed on the inner wall of the housing 13, and the sponge 28 is arranged at the bottom of the through hole 24.

[0038] By the method of the sponge 28 absorbing the lubricating fluid and then applying it, not only can it prevent the lubricating fluid from being thrown out on the high-speed rotating upper pressure roller 6, avoiding contaminating the substrate, ink or the inside of the equipment, but also it can fit the minute unevenness on the surface of the upper pressure roller 6 such as engraving and plating patterns, ensuring that the lubricating fluid penetrates into all contact surfaces and extending the service life of the upper pressure roller 6.

[0039] Working principle and usage process: When preparing the environmental protection label, first place one end of the base material between the upper pressing roller 6 and the lower pressing roller 29, and extend it through the upper pressing roller 6 and the lower pressing roller 29 to one side of the printing unit 2 and finally install it in the unwinding unit 3; Then start the motor 8. When the motor 8 starts, it drives the first rotating shaft 7 to rotate. The rotation of the first rotating shaft 7 drives the rotation of the upper pressing roller 6, conveys the base material to one side of the printing unit 2 for printing, and applies pressure to the base material through the upper pressing roller 6 and the lower pressing roller 29 to smooth the unevenness on the surface of the base material; At the same time, the rotation of the first rotating shaft 7 drives the rotation of the first gear 19. The rotation of the first gear 19 drives the rotation of the second gear 20. The rotation of the second gear 20 drives the rotation of the rotating disk 21. The rotation of the rotating disk 21 drives the rotation of the convex block 22. When the convex block 22 rotates and contacts the connecting plate 23, it pushes the connecting plate 23 upward. The movement of the connecting plate 23 drives one of the limiting shafts 26 to move upward. The movement of the limiting shaft 26 drives the movement of the baffle 25, so that the baffle 25 moves upward to open the through hole 24, and the lubricating fluid inside the housing 13 is discharged from the through hole 24 to lubricate the surface of the upper pressing roller 6; At the same time, start the dust suction pump 17, connect it to the first connecting pipe 15 through the second connecting pipe 16, suck away the impurities on the surface of the base material through the first dust suction pipe 14, and suck away the impurities on the outer walls of the upper pressing roller 6 and the lower pressing roller 29 through the second dust suction pipe 18 to ensure the printing quality.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A printing device for preparing environmental protection labels, comprising a base (1), a printing unit (2), a unwinding unit (3) and a winding unit (4), characterized in that: The printing unit (2), the unwinding unit (3) and the winding unit (4) are all installed at the top of the base (1). The unwinding unit (3) and the winding unit (4) are respectively arranged on both sides of the printing unit (2). A flattening assembly is arranged on one side of the unwinding unit (3). Among them, the flattening assembly includes mounting seats (5) arranged on one side of the unwinding unit (3). There are two mounting seats (5), and both of the two mounting seats (5) are fixedly installed at the top of the base (1). An upper pressing roller (6) and a lower pressing roller (29) are installed between the two mounting seats (5). Both ends of the upper pressing roller (6) are fixedly connected with first rotating shafts (7). One end of one of the first rotating shafts (7) is installed with a motor (8).

2. The printing device for preparing an environmental protection label according to claim 1, characterized in that: Both ends of the lower pressing roller (29) are fixedly connected with second rotating shafts (9). Sliders (10) are arranged at the ends of the two second rotating shafts (9) away from the lower pressing roller (29). A guide shaft (11) is slidably installed inside the slider (10). The guide shaft (11) is fixedly installed inside the mounting seat (5). A first spring (12) is arranged at the bottom end of the slider (10).

3. The printing device for preparing an environmental protection label according to claim 2, wherein: The second rotating shaft (9) is rotatably connected with the slider (10).

4. The printing device for preparing an environmental protection label according to claim 1, wherein: Outer shells (13) are arranged on the outer walls of the upper pressing roller (6) and the lower pressing roller (29). The outer shells (13) are fixedly connected with the mounting seats (5). First suction pipes (14) are evenly installed inside the outer shells (13). Each of the first suction pipes (14) is fixedly connected through a first connecting pipe (15). One end of the first connecting pipe (15) is fixedly installed with a second connecting pipe (16). A suction pump (17) is installed at the end of the second connecting pipe (16) away from the first connecting pipe (15). The suction pump (17) is arranged on one side of the mounting seat (5).

5. The printing device for preparing an environmental protection label according to claim 4, characterized in that: Second suction pipes (18) are evenly installed inside the outer shells (13). The second suction pipes (18) are fixedly connected with the first connecting pipes (15).

6. The printing device for preparing an environmental protection label according to claim 4, wherein: Through holes (24) are evenly formed in the inner wall of the outer shell (13). The through holes (24) are arranged above the upper pressing roller (6).

7. An printing device for preparing an environmental protection label according to claim 4, characterized in that: A baffle (25) is arranged inside the outer shell (13). The baffle (25) is arranged at the top of the through hole (24). Both ends of the baffle (25) are fixedly connected with limiting shafts (26). Both of the two limiting shafts (26) are slidably installed on the inner wall of the outer shell (13). The top end of one of the limiting shafts (26) is fixedly connected with a connecting plate (23). The connecting plate (23) is embedded inside the mounting seat (5). A convex block (22) is arranged on one side of the bottom end of the connecting plate (23). The convex block (22) is fixedly installed on the outer wall of a rotating disk (21). The rotating disk (21) is rotatably installed inside the mounting seat (5). A second gear (20) is fixedly connected to one side of the rotating disk (21). A first gear (19) is meshed and connected to the bottom end of the second gear (20). The first gear (19) is fixedly installed on the outer wall of the first rotating shaft (7).

8. The printing device for preparing an environmental protection label according to claim 7, characterized in that: The outer walls of the two limiting shafts (26) are sleeved with second springs (27), and the second springs (27) are arranged at the top of the baffle plate (25).

9. The printing device for preparing an environmental protection label according to claim 7, characterized in that: The inner wall diameter of the second gear (20) is ten times the inner wall diameter of the first gear (19), and N is a positive integer.

10. A printing device for preparing an environmental protection label according to claim 4, characterized in that: A sponge (28) is installed on the inner wall of the outer shell (13), and the sponge (28) is arranged at the bottom of the through hole (24).

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