Pipe body printing method

Abstract

A pipe body printing method is used for solving the problem that coloring alignment of an existing pipe body is not accurate. Comprising the following steps: rotating a pipe body around a rotating axis, and moving an ink spraying device along the direction of the rotating axis of the pipe body so as to spray light-cured ink to the outer surface of the rotating pipe body; and the irradiation device moves along the direction of the rotating axis of the pipe body so as to irradiate the photocuring printing ink for photocuring. Therefore, the effect of improving the product yield can be achieved.

Description

Technical Field

[0001] The present invention relates to a printing method, in particular to a tube printing method for coloring a tube body using a photocurable pigment. Background Art

[0002] After a product is manufactured and formed, patterns such as trademarks and shaped patterns are formed on the product, or coloring is performed to enhance the visual effect of the product in terms of appearance. For example, when coloring the surface of a tube-shaped product, trademarks, shaped patterns, or colors are usually formed on the product by means of transfer / transfer stamping. However, when transferring the above-mentioned patterns from a rubber mold to the product by transfer / transfer stamping, there is a risk of inaccurate pattern alignment. In particular, the surface of a tube-shaped product is a circumferential surface, which is more likely to have inaccurate pattern alignment than a flat surface, resulting in defects such as skewed or misaligned patterns.

[0003] In view of this, there is indeed a need to improve the existing tube coloring method. Summary of the Invention

[0004] To solve the above problems, the object of the present invention is to provide a tube printing method that can improve the product yield.

[0005] Throughout the present invention, directional terms or their approximate terms, such as "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "side", etc., mainly refer to the direction of the accompanying drawings. Each directional term or its approximate term is only used to assist in explaining and understanding the embodiments of the present invention, and is not used to limit the present invention.

[0006] Throughout the present invention, the use of the quantifiers "a" or "one" for elements and components is only for convenience and to provide the general meaning of the scope of the present invention; in the present invention, it should be construed as including one or at least one, and the singular concept also includes the plural case, unless it clearly means otherwise.

[0007] Throughout the present invention, approximate terms such as "combination", "assembly", or "assembling" mainly include types such as being separable without damaging the components after connection, or being inseparable after connection. Those skilled in the art can select according to the material of the components to be connected or the assembly requirements.

[0008] The tube printing method of the present invention includes: rotating a tube body around a rotation axis, and moving an inkjet device along the direction of the rotation axis of the tube body to eject photocurable ink onto the outer surface of the rotating tube body; and moving an illuminating device along the direction of the rotation axis of the tube body to irradiate the photocurable ink for photocuring.

[0009] Therefore, in the tube printing method of the present invention, while the tube is rotating, the outer surface of the tube is colored with a photo-curing pigment by the inkjet device, and the colored part is photo-cured by the light irradiating device. In this way, the color and pattern can be precisely controlled by computer inkjet coloring, eliminating the step of pattern alignment, reducing the problem of defective products, and improving the product yield.

[0010] Among them, the tube rotates at a constant speed at a rate of 150 - 250 revolutions per minute. In this way, the tube can rotate at a stable rate, improving the accuracy of coloring.

[0011] Among them, the inkjet device sprays photo-curing ink on the tube starting from an initial position on the surface of the tube, and the initial position is between the two ends of the tube. In this way, workers can color only the predetermined part of the tube.

[0012] Among them, the distance between a nozzle of the inkjet device and the tube is 0.5 - 3 mm. In this way, an appropriate inkjet distance can be maintained between the nozzle and the tube, achieving a better inkjet effect.

[0013] Among them, the light irradiating device and the inkjet device are respectively located on opposite sides of the tube, and the light irradiating device and the inkjet device move longitudinally along the rotation axis of the tube at the same constant speed. In this way, coloring can be carried out by the inkjet device while photo-curing is carried out by the light irradiating device, improving the coloring efficiency.

[0014] Among them, the light irradiating device and the inkjet device move longitudinally along the rotation axis of the tube at a constant speed of 0.5 - 2 m / min at the same time. In this way, the coloring efficiency is improved.

[0015] Among them, the light irradiating device and the inkjet device are respectively located on opposite sides of the tube, and the light irradiating device and the inkjet device move longitudinally along the rotation axis of the tube at the same time. The displacement rate of the light irradiating device is less than that of the inkjet device. In this way, it can be ensured that the tube is irradiated by the light irradiating device after being sprayed with the photo-curing pigment, effectively curing the photo-curing pigment.

[0016] Among them, the inkjet device moves longitudinally along the rotation axis of the tube at a constant speed. In this way, the accuracy of coloring is improved.

[0017] Among them, the light irradiating device moves longitudinally along the rotation axis of the tube at a constant speed. In this way, the accuracy of coloring is improved. Description of the Drawings

[0018] Figure 1: Front view of the workbench according to a preferred embodiment of the present invention; Figure 2 : Relative position diagram of the inkjet device and the light irradiation device; Figure 3 : As Figure 2 The schematic diagram of the action shown.

[0019] Explanation of reference numerals: 1: Pipe body 1a: End 2: Inkjet device 21: Nozzle 3: Light irradiation device O: Rotation axis T: Workbench T1: Rotation drive device T2: First track T3: Second track. Detailed implementation manners

[0020] To make the above and other objects, features and advantages of the present invention more obvious and understandable, the preferred embodiments of the present invention are hereinafter specifically described in conjunction with the accompanying drawings; in addition, the same symbols marked in different drawings are regarded as the same, and their descriptions will be omitted.

[0021] Please refer to Figure 1 , Figure 2 As shown, it is a preferred embodiment of the pipe body printing method of the present invention, including rotating a pipe body 1, and an inkjet device 2 jetting ink on the rotating pipe body 1, and a light irradiation device 3 irradiating light on the pipe body 1 after inkjetting.

[0022] The pipe body 1 can be any tubular workpiece to form patterns such as trademarks or styling patterns on the surface of the tubular workpiece. Hereinafter, the pipe body 1 is taken as an example of a golf club for illustration. Specifically, the pipe body 1 can have opposite ends 1a, and the pipe body 1 has a rotation axis O, and the rotation axis O passes through the two ends 1a, so that the pipe body 1 can rotate around the rotation axis O. In this embodiment, the two ends 1a of the pipe body 1 can be fixed to a workbench T, and the workbench T can have an existing rotation drive device T1 such as a motor to drive the pipe body 1 to rotate, which is not elaborated in the present invention. Preferably, the pipe body 1 rotates at a constant speed. In another embodiment, the pipe body 1 rotates at a constant speed at a rate of 150 - 250 revolutions per minute. In this way, the pipe body 1 can rotate at a stable rate to improve the accuracy of coloring.

[0023] While the tube body 1 is rotating, the inkjet device 2 then colors the tube body 1 starting from an initial position on the outer surface of the tube body 1, so as to form patterns such as the above-mentioned trademarks or shaped patterns on the outer surface of the tube body 1. The initial position can be one end 1a of the tube body 1, or the initial position can be located between the two ends 1a of the tube body 1. A nozzle 21 of the inkjet device 2 can eject a photocurable pigment onto the tube body 1 to color the tube body 1. For example, the user can input a predetermined trademark or shaped pattern and other patterns into the inkjet device 2, or, the user can input the required conditions into the AI and then input the pattern generated by the AI into the inkjet device 2. Thus, the inkjet device 2 can form the pattern on the tube body 1. Specifically, after the nozzle 21 is positioned at the initial position of the tube body 1, the inkjet device 2 can be displaced along the rotation axis O of the tube body 1 in the longitudinal direction. For example, the inkjet device 2 can be driven by a first track T2 of the workbench T to be displaced along the rotation axis O of the tube body 1 in the longitudinal direction, so that while the tube body 1 is rotating, the nozzle 21 ejects photocurable ink onto the outer surface of the tube body 1, and thus the outer surface of the tube body 1 can be colored during one rotation of the tube body 1. Also, the distance between the nozzle 21 and the tube body 1 can be 0.5 - 3 mm, and in this way, the effect of uniform coloring can be achieved.

[0024] Please refer to Figure 2 、 Figure 3 As shown in the figure, while the tube body 1 is rotating, the ultraviolet light is irradiated on the colored part of the tube body 1 by the light irradiation device 3 to cure the photocurable pigment. The light irradiation device 3 can be displaced along the rotation axis O of the tube body 1 in the longitudinal direction to irradiate the tube body 1 with ultraviolet light. The light irradiation device 3 can be driven by a second track T3 of the workbench T to be displaced along the rotation axis O of the tube body 1 in the longitudinal direction. For example, after the inkjet device 2 finishes coloring the outer surface of the tube body 1 with the photocurable pigment, the light irradiation device 3 can then irradiate the outer surface of the tube body 1 with ultraviolet light, or, while the inkjet device 2 is coloring the outer surface of the tube body 1 with the photocurable pigment, the light irradiation device 3 can irradiate the tube body 1 with ultraviolet light. In this embodiment, the light irradiation device 3 and the inkjet device 2 are respectively located on opposite sides of the tube body 1, and the light irradiation device 3 can be displaced at an equal rate along the rotation axis O in the longitudinal direction simultaneously with the inkjet device 2. Or, in another embodiment, the displacement rate of the light irradiation device 3 can be less than the displacement rate of the inkjet device 2, and in this way, it can be ensured that the tube body 1 is irradiated by the light irradiation device 3 after being sprayed with the photocurable pigment, which has the effect of ensuring that the photocurable pigment can be cured.

[0025] In summary, in the tube printing method of the present invention, while the tube is rotating, the outer surface of the tube is colored with a photo-curable pigment by the inkjet device, and the colored part is photo-cured by the light irradiation device. In this way, the color and pattern can be precisely controlled by computer inkjet coloring, the step of pattern alignment can be eliminated, the problem of defective product generation can be reduced, and the product yield can be improved.

[0026] Although the present invention has been disclosed by the above preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various changes and modifications to the above embodiments without departing from the spirit and scope of the present invention, and still fall within the technical scope protected by the present invention. Therefore, the protection scope of the present invention shall include the meaning recorded in the appended claims and all changes within the equivalent scope.

Claims

1. A tube body printing method, characterized in that, Including: Rotating a tube body around a rotation axis, and moving an inkjet device along the direction of the rotation axis of the tube body to spray photocurable ink onto the outer surface of the rotating tube body; And Moving an illuminating device along the direction of the rotation axis of the tube body to irradiate the photocurable ink for photocuring.

2. The tube body printing method according to claim 1, characterized in that, The tube body rotates at a constant speed at a rate of 150 - 250 revolutions per minute.

3. The tube body printing method according to claim 1, characterized in that, The inkjet device starts spraying photocurable ink on the tube body from a starting position on the surface of the tube body, and the starting position is located between the two ends of the tube body.

4. The tube body printing method according to claim 1, characterized in that, The distance between a nozzle of the inkjet device and the tube body is 0.5 - 3 mm.

5. The tube body printing method according to claim 1, characterized in that, The illuminating device and the inkjet device are respectively located on opposite sides of the tube body, and the illuminating device and the inkjet device move simultaneously at a constant speed along the longitudinal direction of the rotation axis of the tube body.

6. The tube body printing method according to claim 5, characterized in that, The illuminating device and the inkjet device move simultaneously at a constant speed along the longitudinal direction of the rotation axis of the tube body at a rate of 0.5 - 2 m / min.

7. The tube body printing method according to claim 1, characterized in that, The illuminating device and the inkjet device are respectively located on opposite sides of the tube body, and the illuminating device and the inkjet device move simultaneously along the longitudinal direction of the rotation axis of the tube body, and the displacement rate of the illuminating device is less than the displacement rate of the inkjet device.

8. The tube body printing method according to claim 1, characterized in that, The inkjet device moves at a constant speed along the longitudinal direction of the rotation axis of the tube body.

9. The tube body printing method according to claim 1, characterized in that, The illuminating device moves at a constant speed along the longitudinal direction of the rotation axis of the tube body.

Images