A printing apparatus

Abstract

The utility model relates to a kind of printing equipment, it relates to printing equipment technical field, including machine body, material releasing mechanism, printing mechanism and material receiving mechanism, machine body is provided with printing area;Material releasing mechanism and printing area between and material receiving mechanism and printing area between are all provided with at least one material guide roller, the roll surface of material guide roller is provided with first helical line and second helical line arranged mutually crossing, the helical direction of first helical line and second helical line is opposite;When printing medium and material guide roller surface contact and relative motion, first helical line and second helical line cooperate to produce the unfolding force of printing medium to its width direction both sides tension, to prevent printing medium to produce wrinkle.The above technical scheme is used, can effectively eliminate the wrinkle of printing medium in conveying process, improve printing quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and specifically to a printing device. Background Technology

[0002] In roll-to-roll printing equipment, such as large UV flatbed printers, textile printing machines, or advertising inkjet printers, the stable and reliable operation of the feeding and receiving mechanisms is crucial to ensuring the final print quality. These devices typically handle rolls of printing media, such as flexible sheets, textile fabrics, and PVC films. The media is drawn out from the feeding mechanism, passes through the printing area, and is then rewound by the receiving mechanism.

[0003] Currently, a long-standing and particularly prominent technical challenge in this field is the tendency for printing media to wrinkle during transport. This wrinkling primarily stems from two aspects: First, during unwinding, uneven release of the inherent internal stress of the roll material or initial stacking errors during winding cause slight stress concentration in the width direction as the media unfolds, leading to a tendency for the media to shrink towards the center. Second, during winding, as the winding diameter increases, even slight unevenness in tension control can easily accumulate and compress minute irregularities into noticeable longitudinal wrinkles.

[0004] In existing technologies, to alleviate this problem, smooth guide rollers are typically used for printing media transport, relying on the overall tension control system of the equipment. However, traditional guide rollers primarily serve a supporting and steering function, lacking the ability to actively eliminate wrinkles. They cannot effectively counteract the shrinkage stress of the printing media in the width direction, and are also unable to smooth out minor wrinkles that have already formed. If the printing media enters the printing area with wrinkles, it directly causes a change in the gap (distance) between the printhead and the printed media, easily leading to inkjet splatter, ghosting, or printhead scratching. This not only results in printed waste but may also damage the expensive printhead, severely restricting print quality and production efficiency. Utility Model Content

[0005] The purpose of this application is to provide a printing device that can effectively eliminate wrinkles generated during the transport of printing media, thereby improving printing quality and production efficiency.

[0006] The technical solution adopted by this utility model is: a printing device, including a body, a feeding mechanism, a printing mechanism and a receiving mechanism. The body is provided with a printing area. The feeding mechanism is used to feed printing media into the printing area. The printing mechanism is used to print the printing media fed into the printing area. The receiving mechanism is used to receive the printed media that has been printed. At least one guide roller is provided between the feeding mechanism and the printing area and between the receiving mechanism and the printing area. The roller surface of the guide roller is provided with a first spiral line and a second spiral line arranged in opposite directions. When the printing medium comes into contact with and moves relative to the surface of the guide roller, the first spiral and the second spiral cooperate to generate an unfolding force on the printing medium, which tensions it to both sides in the width direction, so as to prevent the printing medium from wrinkling.

[0007] Optionally, the first and second spiral lines are spiral grooves formed on the surface of the guide roller.

[0008] Optionally, both ends of the guide roller are provided with retaining rings.

[0009] Optionally, the two sides of the machine body are the feeding end and the discharging end, respectively. The printing area is located between the feeding end and the discharging end. The feeding mechanism and the receiving mechanism are located at the feeding end and the discharging end, respectively. The guide roller is located between the feeding mechanism and the feeding end and between the receiving mechanism and the discharging end.

[0010] Optionally, the feeding mechanism includes two feeding seats located on one side of the feeding end of the machine body and a feeding roller rotatably located between the two feeding seats, with the printing medium wound around the feeding roller.

[0011] Optionally, the receiving mechanism includes two receiving seats located on one side of the machine body's discharge end and a receiving roller rotatably located between the two receiving seats. The receiving roller is used to receive the printed media after printing.

[0012] Optionally, a cutting mechanism is also included, which is located above the receiving mechanism and is used to cut the printed media after printing.

[0013] Optionally, the cutting mechanism includes a first cutting frame and a second cutting frame mounted on the machine body, a cutter holder slidably mounted on the second cutting frame, and a cutter mounted on the cutter holder. The second cutting frame is located outside the first cutting frame. The first cutting frame and the second cutting frame cooperate to form a gap for the printing medium to pass through. One end of the cutter is fixed to the cutter holder, and the other end extends into the gap to cut the printing medium passing through the gap.

[0014] Optionally, it also includes a pressing mechanism, which includes a pressing roller that can be lifted and lowered on the machine body and a driving component for driving the pressing roller to rise and fall vertically relative to the machine body.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are as follows: This application provides a printing device, including a body, a feeding mechanism, a printing mechanism, and a receiving mechanism. At least one guide roller is provided between the feeding mechanism and the printing area, and between the receiving mechanism and the printing area. The roller surface of the guide roller has intersecting first and second spiral lines, with opposite spiral directions. When the printing medium contacts the surface of the guide roller and relative movement occurs, the first and second spiral lines cooperate to generate a stretching force on the printing medium in the width direction, thereby preventing wrinkles from forming. Compared to the smooth guide rollers in the prior art, this application uses the cooperation of the first and second spiral lines to generate a stretching force on the printing medium in the width direction, thus flattening the printing medium during transport and avoiding wrinkles, improving printing quality and production efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 yes Figure 1 Another perspective view; Figure 3 This is a schematic diagram illustrating the positional relationship between the feeding mechanism, guide roller, printing mechanism, pressing mechanism, cutting mechanism, and receiving mechanism in this embodiment. Figure 4 This is a diagram illustrating the guide roller in this embodiment; Figure 5 This is a partial view of this embodiment; Figure 6 yes Figure 5 Enlarged view of part A in the middle.

[0018] Explanation of reference numerals in the attached drawings: 10, machine body; 101, printing area; 102, feeding end; 103, discharging end; 20, feeding mechanism; 21, feeding seat; 22, feeding roller; 200, printing medium; 30, printing mechanism; 31, printing fixing frame; 32, printing nozzle; 40, receiving mechanism; 41, receiving seat; 42, receiving roller; 50, guide roller; 51, first spiral; 52, second spiral; 53, retaining ring; 60, cutting mechanism; 61, first cutting frame; 611, cutting groove; 62, second cutting frame; 621, guide rail; 63, cutting seat; 631, push rod; 64, cutter; 70, pressing mechanism; 71, pressing roller; 72, driving component. Detailed Implementation

[0019] The following will refer to the appendix in the embodiments of this utility model. Figures 1-6 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] This embodiment provides a printing device, referring to... Figures 1-6The device includes a body 10, a feeding mechanism 20, a printing mechanism 30, and a receiving mechanism 40. The body 10 is provided with a printing area 101. The feeding mechanism 20 is used to feed printing media 200 into the printing area 101. The printing mechanism 30 is located above the printing area 101 and is used to print the printing media 200 fed into the printing area 101. The receiving mechanism 40 is used to receive the printed printing media 200 after printing, thereby collecting the printing media 200.

[0023] At least one guide roller 50 is provided between the feeding mechanism 20 and the printing area 101, and between the receiving mechanism 40 and the printing area 101. The roller surface of the guide roller 50 is provided with a first spiral line 51 and a second spiral line 52 arranged in a crisscross pattern. The first spiral line 51 and the second spiral line 52 are both spirally distributed along the length direction of the guide roller 50, and the spiral directions of the first spiral line 51 and the second spiral line 52 are opposite.

[0024] During printing, the feeding mechanism 20 conveys the printing medium 200 to the printing area 101, and the printing mechanism 30 prints the printing medium 200 conveyed to the printing area 101. Subsequently, the receiving mechanism 40 receives the printed printing medium 200. When the feeding mechanism 20 feeds the medium and the receiving mechanism 40 receives the medium, the printing medium 200 comes into contact with the surface of the guide roller 50 and moves relative to it. The first spiral 51 and the second spiral 52 work together to generate an unfolding force on the printing medium 200, which stretches the printing medium 200 to both sides in the width direction, flattening the printing medium 200. This prevents the printing medium 200 from wrinkling during the conveying process, effectively avoiding printing waste and print head damage caused by wrinkles in the printing medium 200, and improving printing quality and production efficiency.

[0025] Furthermore, the first spiral 51 and the second spiral 52 are spiral grooves formed on the roller surface of the guide roller 50. In this embodiment, two continuous spiral grooves in opposite directions form the first spiral 51 and the second spiral 52.

[0026] Setting the first spiral 51 and the second spiral 52 as spiral grooves on the surface of the guide roller 50 can better guide the printing medium 200, making it more stable during the conveying process, further enhancing the unfolding effect of the printing medium 200, more effectively preventing wrinkles from forming on the printing medium 200, ensuring the smooth progress of the printing process, and improving the quality of the printed product.

[0027] Furthermore, the guide roller 50 has retaining rings 53 at both ends.

[0028] By setting the baffle ring 53, the axial movement range of the printing medium 200 on the guide roller 50 can be effectively limited, preventing the printing medium 200 from deviating and sliding out of the guide roller 50 during the conveying process. This ensures that the printing medium 200 is always conveyed and unfolded in the preset position of the guide roller 50, further guaranteeing the stability of the printing medium 200 conveying, and thus improving the reliability and printing quality of the entire printing process.

[0029] Furthermore, the two sides of the machine body 10 are the feeding end 102 and the discharging end 103, respectively. The printing area 101 is located between the feeding end 102 and the discharging end 103. The feeding mechanism 20 and the receiving mechanism 40 are located at the feeding end 102 and the discharging end 103, respectively. The guide roller 50 is located between the feeding mechanism 20 and the feeding end 102 and between the receiving mechanism 40 and the discharging end 103.

[0030] Understandably, the above settings ensure that the printing medium 200 maintains a stable transport state before entering the printing area 101 and after leaving the printing area 101, avoiding loosening or deviation of the printing medium 200, and ensuring that the printing medium 200 can pass through the printing area 101 accurately and smoothly, thus providing a basic guarantee for high-quality printing.

[0031] In this embodiment, there are two guide rollers 50 between the feeding mechanism 20 and the printing area 101, and one guide roller 50 between the receiving mechanism 40 and the printing area 101. In other embodiments, the number of guide rollers 50 can be adjusted according to actual conditions. For example, when the printing medium 200 is thick or the requirements for stable conveying are high, the number of guide rollers 50 between the feeding mechanism 20 and the printing area 101 and between the receiving mechanism 40 and the printing area 101 can be appropriately increased to ensure that the printing medium 200 remains stable during the conveying process. When the printing medium 200 is thin and the conveying requirements are relatively low, the number of guide rollers 50 can be appropriately reduced to meet the printing requirements while reducing the manufacturing cost and usage complexity of the equipment.

[0032] Furthermore, the feeding mechanism 20 includes two feeding seats 21 located on one side of the feeding end 102 of the machine body 10 and a feeding roller 22 rotatably located between the two feeding seats 21, and the printing medium 200 is wound around the feeding roller 22. The receiving mechanism 40 includes two receiving seats 41 located on one side of the discharge end 103 of the machine body 10 and a receiving roller 42 rotatably located between the two receiving seats 41. The receiving roller 42 is used to receive the printing medium 200 after printing is completed.

[0033] With the above configuration, both the feeding seat 21 and the receiving seat 41 provide stable support. The feeding roller 22 and the receiving roller 42, through their rotational cooperation with the feeding seat 21 and the receiving seat 41 respectively, enable the smooth delivery and reception of the printing medium 200. The design of the feeding roller 22 allows the printing medium 200 to unfold in an orderly manner and enter the printing area 101, while the receiving roller 42 can neatly wind up the printed medium 200, facilitating subsequent processing and storage.

[0034] Furthermore, the printing mechanism 30 includes a printing fixture 31 fixedly mounted on the body 10 and a printing nozzle 32 slidably mounted on the printing fixture 31. The printing nozzle 32 is located on the side of the printing fixture 31 facing the receiving mechanism 40 and can slide relative to the printing fixture 31 in a direction perpendicular to the conveying direction of the printing medium 200.

[0035] During printing, the feeding mechanism 20 continuously delivers the printing medium 200 into the printing area 101 of the machine body 10. The print head 32 slides on the printing holder 31 in a direction perpendicular to the delivery of the printing medium 200, precisely printing the printing medium 200 that enters the printing area 101. During the printing process, the receiving mechanism 40 operates synchronously, and the receiving roller 42 rotates continuously as printing progresses, promptly winding and collecting the printed printing medium 200, ensuring that the entire printing process is smooth and efficient. The coordinated operation of all components ensures the stable and reliable operation of the printing equipment.

[0036] Furthermore, the printing device provided in this embodiment also includes a cutting mechanism 60, which is located above the receiving mechanism 40 and is used to cut the printing medium 200 after printing is completed.

[0037] Specifically, the cutting mechanism 60 includes a first cutting frame 61 and a second cutting frame 62 mounted on the body 10, a cutter 64 seat slidably mounted on the first cutting frame 61 and the second cutting frame 62, and a cutter 64 mounted on the cutter 64 seat. The first cutting frame 61 and the second cutting frame 62 are both arranged along the width direction of the printing medium 200. The second cutting frame 62 is located outside the first cutting frame 61, and the first cutting frame 61 and the second cutting frame 62 cooperate to form a gap for the printing medium 200 to pass through. The cutter 64 seat can slide relative to the second cutting frame 62 along the width direction of the printing medium 200. One end of the cutter 64 is fixed on the cutter 64 seat, and the other end extends into the gap to cut the printing medium 200 passing through the gap.

[0038] Furthermore, a cutting groove 611 is provided on the side of the first cutting rack 61 facing the second cutting rack 62, and at least part of the end of the cutter 64 that extends into the gap is accommodated in the cutting groove 611.

[0039] In addition, in this embodiment, the cutter 64 is driven by human power to slide back and forth on the second cutting frame 62, thereby cutting the printing medium 200. Specifically, the second cutting frame 62 is provided with a guide rail 621, the cutter 64 is provided with a sliding groove that slides and cooperates with the guide rail 621, and the cutter 64 is provided with a push rod 631 to facilitate the movement of the cutter 64. In other embodiments, electric drive methods such as motor screws can also be used, which are not limited here.

[0040] During printing, the printed medium 200 passes through the gap formed by the cooperation of the first cutting frame 61 and the second cutting frame 62 and is wound onto the take-up roller 42 of the take-up mechanism 40. When cutting is required, the cutting blade 64 is driven to slide relative to the second cutting frame 62 along the width direction of the printed medium 200, thereby completing the cutting.

[0041] Furthermore, the printing device provided in this embodiment also includes a pressing mechanism 70. The pressing mechanism 70 includes a pressing roller 71 that can be lifted and lowered on the machine body 10 and a driving member 72 for driving the pressing roller 71 to rise and fall vertically relative to the machine body 10. The pressing roller 71 is arranged along the width direction of the printing medium 200 and is located on the side of the printing area 101 away from the printing mechanism 30. The driving member 72 can be a motor screw drive lifting structure or a driving structure using other power sources.

[0042] During the printing process, the pressure roller 71 applies a certain pressure to the printing medium 200 to keep it flat, preventing wrinkles or shifting during transport and ensuring stable transmission of the printing medium 200, thus guaranteeing print quality. When it is necessary to adjust the pressure of the pressure roller 71 on the printing medium 200, the driving component 72 can drive the pressure roller 71 to move vertically up and down relative to the machine body 10 to accommodate printing media 200 of different thicknesses or materials.

[0043] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A printing apparatus characterized by comprising: The device includes a body (10), a feeding mechanism (20), a printing mechanism (30), and a receiving mechanism (40). The body (10) is provided with a printing area (101). The feeding mechanism (20) is used to feed printing media (200) to the printing area (101). The printing mechanism (30) is used to print the printing media (200) fed into the printing area (101). The receiving mechanism (40) is used to receive the printed media (200) that has been printed. At least one guide roller (50) is provided between the feeding mechanism (20) and the printing area (101) and between the receiving mechanism (40) and the printing area (101). The roller surface of the guide roller (50) is provided with a first spiral line (51) and a second spiral line (52) arranged in a crisscross manner. The spiral directions of the first spiral line (51) and the second spiral line (52) are opposite. When the printing medium (200) comes into contact with the surface of the guide roller (50) and moves relative to it, the first spiral (51) and the second spiral (52) work together to generate an unfolding force on the printing medium (200) to stretch it to both sides in the width direction, so as to prevent the printing medium (200) from wrinkling.

2. The printing device according to claim 1, wherein The first spiral (51) and the second spiral (52) are spiral grooves formed on the surface of the guide roller (50).

3. The printing device of claim 1, wherein, Both ends of the guide roller (50) are provided with retaining rings (53).

4. The printing device according to claim 1, wherein The machine body (10) has a feeding end (102) and a discharging end (103) on its two sides, respectively. The printing area (101) is located between the feeding end (102) and the discharging end (103). The feeding mechanism (20) and the receiving mechanism (40) are located at the feeding end (102) and the discharging end (103) respectively. The guide roller (50) is located between the feeding mechanism (20) and the feeding end (102) and between the receiving mechanism (40) and the discharging end (103).

5. A printing device according to claim 4, wherein, The feeding mechanism (20) includes two feeding seats (21) located on one side of the feeding end (102) of the machine body (10) and a feeding roller (22) rotatably located between the two feeding seats (21), and the printing medium (200) is wound on the feeding roller (22).

6. The printing device according to claim 4, wherein The receiving mechanism (40) includes two receiving seats (41) located on one side of the discharge end (103) of the machine body (10) and a receiving roller (42) rotatably located between the two receiving seats (41). The receiving roller (42) is used to receive the printing medium (200) after printing is completed.

7. A printing device according to claim 1, characterized in that, It also includes a cutting mechanism (60), which is located above the receiving mechanism (40) and is used to cut the printing medium (200) after printing is completed.

8. A printing device according to claim 7, characterized in that, The cutting mechanism (60) includes a first cutting frame (61) and a second cutting frame (62) mounted on the body (10), a cutter holder (63) slidably mounted on the second cutting frame (62), and a cutter (64) mounted on the cutter holder (63). The second cutting frame (62) is located outside the first cutting frame (61). The first cutting frame (61) and the second cutting frame (62) cooperate to form a gap for the printing medium (200) to pass through. One end of the cutter (64) is fixed on the cutter holder (63), and the other end extends into the gap to cut the printing medium (200) passing through the gap.

9. A printing device according to claim 1, characterized in that, It also includes a pressing mechanism (70), which includes a pressing roller (71) that can be lifted and lowered on the machine body (10) and a driving component (72) for driving the pressing roller (71) to rise and fall vertically relative to the machine body (10).

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