TWI760740B - Rubber head transfer method - Google Patents

Abstract

A rubber head transfer method includes a design step and a transfer step. In the design step, a design pattern is converted into coordinates through a regression calculation formula to design a converted pattern, and then the converted pattern is formed on a plate. In the transfer step, the plate is covered with ink, and a plastic head of a transfer mechanism is used to press down the plate, so that the plastic head adheres to the ink that forms the converted pattern, and finally the plastic heads are aligned one by one. The object is transferred to stamp a transfer pattern on the object. After the converted pattern is pad-printed to the object, a transfer pattern equivalent to the design pattern can be formed on the object, so as to avoid the deformation and distortion of the pattern on the object, and the regression calculation formula can be based on different shapes. The rubber head and the object are adjusted and corresponding, and the versatility is high.

Description

Rubber head transfer method

The present invention relates to a transfer method, in particular to a plastic head transfer method that is not distorted after printing.

The rubber head transfer technology (or pad printing technology) belongs to a kind of gravure printing, which is to cover the ink on the printing plate with a specific pattern, and then press the printing plate through the rubber head to make the ink on the printing plate stick. To the glue head, the ink on the glue head forms the aforesaid specific pattern, and finally the glue head is stamped on the object, so that the specific pattern is displayed on the object. However, although the pattern to be pad-printed is formed on a flat printing plate, the part where the rubber head is used for imprinting is often curved, and even the place where the object is stamped may also be curved, which results in the pattern on the printing plate being often curved. The distortion is distorted after transfer to the object, so there is still room for improvement.

Therefore, the purpose of the present invention is to provide a transfer method in which the pattern is not deformed and distorted after pad printing.

Therefore, the rubber head transfer method of the present invention includes a design step and a transfer step. In the design step, a design pattern is converted into coordinates through a regression calculation formula to design a converted pattern, and then the converted pattern is formed on a plate. In the transfer step, the plate is covered with ink, and a plastic head of a transfer mechanism is used to press down the plate, so that the plastic head adheres to the ink that forms the converted pattern, and finally the plastic heads are aligned one by one. The object is transferred to stamp a transfer pattern on the object.

The effect of the present invention is that: the regression calculation formula can be adjusted according to the transfer action of the rubber head, the shape of the rubber head, and the shape of the object, and used for coordinate transformation of the design pattern, so as to design a shape The converted pattern on the plate, after the converted pattern is pad-printed to the object, a transfer pattern equivalent to the design pattern can be formed on the object, so that the pattern deformation and distortion on the object can be avoided, and the Corresponding to different shapes of rubber heads and objects, it has high versatility.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are designated by the same reference numerals.

Referring to FIG. 1 , FIG. 2 , and FIG. 3 , it is a first embodiment of a rubber head transfer method according to the present invention. The rubber head transfer method includes a design step and a transfer step. In this design step, a design pattern 11 to be displayed on the target object 4 is prepared, and then a regression formula is used to convert the design pattern 11 into a converted pattern 12 (the converted pattern 12 in FIG. 1 is for illustration only, not the true transformed form), the regression formula is:

X=Ax ³ +Bx ² +Cx+D

Y=Ey ⁴ +Fy ³ +Gy ² +Hy+I

Wherein, x and y are the coordinates of two mutually perpendicular directions on the design pattern 11, and each point constituting the figure on the design pattern 11 is recorded with coordinates (x, y), and the origin is as shown in FIG. 1 ( 0,0) is located at the center of the design pattern 11, X represents the distance relative to the origin on the coordinates of the converted pattern 12, Y represents the angle on the coordinates of the converted pattern 12, A, B, C, D, E, F, G, H, and I are constants selected according to the transfer operation and the shape of the stamped part of the object. The first embodiment is vertical action transfer, and A, B, C, D, F, G, H are between -1 and 10, and E is 0. When the first embodiment takes golf balls as the target , the regression formula can be optimally expressed as follows:

X=-0.0016 x ³ +0.058 x ² +0.2248x+3.1332

Y=-0.0003 y ³ +0.0314 y ² +0.1697y+6.7178

The obtained converted pattern 12 is formed on a plate 2 made of steel or plastic by gravure.

In the transfer step, the plate 2 is covered with ink, and then a glue head 31 of a transfer mechanism 3 is used to press down the plate 2 so that the glue head 31 adheres to the ink forming the converted pattern 12 . Then, an object 4 is transferred with the glue head 31 dipped in ink (the glue head 31 has plasticity and elasticity, after being pressed against the object 4, it will deform to fit the surface of the object 4). In the first embodiment, the object 4 is a golf ball with irregularly-sized and shaped concave holes on the surface, but of course it can also be other spherical or non-spherical objects 4 , which is not limited thereto. Before the glue head 31 transfers the object 4 , the glue head 31 is separated from the object 4 by a distance t of 15 to 50 mm. Finally, the glue head 31 transfers the object 4 in a vertical transfer mode, so that the ink on the glue head 31 stamps a transfer pattern 13 on the object 4 as shown in FIG. The pattern 13 will be exactly the same as the design pattern 11 . Through the rubber head transfer method of the first embodiment, the errors caused by the uneven shape of the rubber head 31 and the object 4 can be eliminated, including the arc-shaped curved surface or the irregular holes on the surface, so that the The transfer pattern 13 on the object 4 is the same as the original design pattern 11 without deformation and distortion. The parameters of the first embodiment are a golf ball as an example, but A, B, C, D, F, G, H are between Between -1 and 10, the parameter setting where E is 0 can be applied to other types of spheres. Of course, other parameter settings can also be used to correspond to other non-sphere-shaped objects 4, which is highly versatile.

Referring to FIG. 4 and FIG. 5, it is a second embodiment of the rubber head transfer method of the present invention. The second embodiment is substantially the same as the first embodiment, except that in the transfer step, The glue head 31 transfers the object 4 in a horizontal transfer mode. Specifically, after the glue head 31 presses down on the object 4, the object 4 will be driven (the object 4 is moved by a The clamping mechanism 5 is clamped and fixed) and moves horizontally relative to the glue head 31, so that the glue head 31 contacts and slides along the surface of the object 4. Since in the second embodiment, the object 4 is a sphere, when the glue After the head 31 is pressed down against the object 4, the glue head 31 starts to move horizontally, and the clamping mechanism 5 simultaneously drives the object 4 to rotate slowly in place, so that the ink on the glue head 31 can move along the object 4. It should be noted that the transfer mechanism 3 is not limited to the mechanism disclosed in the drawings, and the action methods of the glue head 31 and the object 4 are not limited to the above, as long as the It is within the scope of the second embodiment that the glue head 31 can perform horizontal movement transfer printing on the object 4 . In the design step, A, B, C, D, E, F, H of the regression calculation formula are between -1 and 30, G and I are between -30 and 1, and X is the converted pattern. The coordinates of 12 represent a displacement in a first horizontal direction, and Y on the coordinates of the converted pattern 12 represents a displacement in a second horizontal direction perpendicular to the first horizontal direction, that is, the two-dimensional pattern on the converted pattern 12. coordinate. And x and y are also the two-dimensional coordinates of the design pattern 11. It should be noted that, in the second embodiment, the origin of the design pattern 11 and the converted pattern 12 is located at the end point of the moving direction. , which is the first contact point after the glue head 31 contacts the object 4 . In FIG. 5 , although the design pattern 11 and the converted pattern 12 are represented by the same pattern, in fact, the two patterns are different due to the conversion. When a golf ball is used as the transferred object 4, the regression formula can be best expressed as follows:

X=-(7e ^-05 )x ³ +0.0093x ² +0.6328x+1.8213

Y=-0.0779y ⁴ +2.1736y ³ -14.791y ² +27.911y-(e ^-08 )

The second embodiment can correspond to horizontal action transfer printing, which improves the versatility of the present invention. Similarly, the parameters of the second embodiment are golf balls as an example, but A, B, C, D, E, F, The setting of H between -1 and 30, G and I between -30 and 1 can also be applied to other types of spheres. Of course, other parameter settings can also be used to correspond to other non-spherical shapes. The object 4 is very flexible in the customized design, and can avoid the inconvenience that the original design pattern needs to be adjusted many times according to the transferred pattern during the conventional transfer.

To sum up, in the present invention, the converted pattern 12 on the plate 2 is designed to correspond to the shape of the glue head 31 and the object 4, so that the transfer pattern 13 stamped on the object 4 is the same as the original one. The design patterns 11 are the same and will not be deformed or distorted, so as to meet different customization requirements, so the purpose of the present invention can indeed be achieved.

However, the above are only examples of the present invention, and should not limit the scope of the present invention. Any simple equivalent changes and modifications made according to the scope of the application for patent of the present invention and the content of the patent specification are still within the scope of the present invention. within the scope of the invention patent.

11: Design Patterns 12: Pattern after conversion 13: transfer pattern 2: Plate 3: transfer mechanism 31: plastic head 4: Objects 5: Clamping mechanism t: distance x: coordinate y: coordinate X: Coordinate Y: coordinate

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: FIG. 1 is a schematic diagram illustrating a design step in a first embodiment of a rubber head transfer method of the present invention; FIG. 2 is a schematic diagram illustrating a transfer step in the first embodiment Figure 3 is a schematic diagram illustrating the finished product of the first embodiment; FIG. 4 is a schematic diagram illustrating a second embodiment of the rubber head transfer method of the present invention; and FIG. 5 is a schematic diagram illustrating the design steps in the second embodiment.

11: Design Patterns

12: Pattern after conversion

2: Plate

x: coordinate

y: coordinate

X: Coordinate

Y: coordinate

Claims (10)

A rubber head transfer method, comprising: a design step, transforming coordinates of a design pattern through a regression calculation formula to design a converted pattern, and then forming the converted pattern on a plate; and In a transfer printing step, the plate is covered with ink, and a plastic head of a transfer mechanism is used to press down the plate, so that the plastic head sticks to the ink that forms the converted pattern, and finally the plastic head is made to carry out the transfer process on an object. Transferring to stamp a transfer pattern on the object. The rubber head transfer method according to claim 1, wherein, in the design step, the regression formula is: X=Ax ³ +Bx ² +Cx+D Y=Ey ⁴ +Fy ³ +Gy ² +Hy+ I Among them, x and y are the two-dimensional coordinates of the design pattern, X and Y are the coordinates of the converted pattern, A, B, C, D, E, F, G, H, I are based on the transfer action and the The constant chosen for the shape of the stamped portion of the object. The rubber head transfer method according to claim 2, wherein, in the design step, A, B, C, D, F, G, and H of the regression formula are between -1 and 10, and E is 0, X represents the distance relative to the origin on the coordinates of the converted pattern, and Y represents the angle on the coordinates of the converted pattern. In this transfer step, the rubber head is used to transfer the object vertically. transfer. The rubber head transfer method according to claim 3, wherein, in the design step, A=-0.0016, B=0.058, C=0.2248, D=3.1332, E=0, F=- of the regression calculation formula 0.0003, G=0.0314, H=0.1697, I=6.7178, in this transfer step, the object is arc-shaped. The rubber head transfer method according to claim 2, wherein, in the design step, A, B, C, D, E, F, and H of the regression formula are between -1 and 30, and G and I is between -30 and 1, X represents a displacement in a first horizontal direction on the coordinates of the converted pattern, Y represents a displacement in a second horizontal direction perpendicular to the first horizontal direction on the coordinates of the converted pattern The displacement amount, in the transfer step, the glue head transfers the object relative to the object in a horizontal movement transfer mode. The rubber head transfer method according to claim 5, wherein, in the design step, A=-7e- ⁰⁵ , B=0.0093, C=0.6328, D=1.8213, E=-0.0779 of the regression calculation formula, F=2.1736, G=-14.791, H=27.911, I=-e- ⁰⁸ , in this transfer step, the object is arc-shaped. The rubber head transfer method according to claim 1, wherein, in the design step, the plate is made of steel or plastic. The rubber head transfer method according to claim 1, wherein, in the design step, the plate is made of gravure. The rubber head transfer method according to claim 1, wherein, in the transfer step, before the rubber head transfers the object to the object, the rubber head is separated from the object by 15 to 50 mm. The rubber head transfer method according to claim 1, wherein, in the transfer step, the surface of the object has cavities with irregular sizes and shapes.

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