JPS6377799A - Method of stamping character, figure, etc. - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention is achieved by adhering a masking sheet with transparent parts or thin parts for characters, figures, etc. in place of markings, and then shot blasting onto the surface of the masking sheet. The present invention relates to a method for stamping characters, figures, etc., clearly and in large quantities at once on the surfaces of tools, buttons, hooks, buckles, etc.

(Prior art) Conventionally, when stamping a manufacturer's name, trademark, etc. on the surface of a stop, button, etc., the mold is pressed into one part of the stop, etc.
Each piece was stamped and its shape was engraved.

(Problems to be Solved by the Invention) Therefore, the conventional method is inefficient because it stamps on one piece, which increases the cost of stamping.Also, characters and figures made of thin lines are not suitable for fasteners, buttons, etc. If the surface of the plate is a thin metal plate, corners etc. may be partially punched out during stamping, resulting in defective products, or if characters or figures are made of thick lines, the stamp may be blurred and stamped. There are problems such as the markings becoming unclear, or stress being applied only to the corners of the stamp, causing cuts to the core. Furthermore, if the metal plate is thick or hard, it is difficult to create unevenness. Therefore, there were problems such as the markings tending to become unclear.

(Means for Solving the Problems) The present invention is a method for stamping characters, figures, etc. provided in order to solve the problems mentioned in -1-, which
A masking sheet 1 consisting of an adhesive layer 3 is provided with a transparent part 5 or a thin part 5' with letters, figures 4, etc. instead of engravings, and the masking sheet is used as a surface of a stop, button, hook, buckle, etc. By adhering to the sheet and shot blasting one side of the sheet, letters, figures, etc. can be imprinted 6.

(Function) The sea sand, silica sand, etc. sprayed by shot blasting the sheet 1 side as described above collides with the surface of the stopper etc. A part from the transparent part 5, and it differs from other surfaces. Since it has a matte finish, characters, symbols 4, etc. can be clearly stamped 6.

In addition, thin-walled portions 5' where there is no adhesive layer 3 in parts such as letters and symbols 4
Even in this case, since there is no adhesive layer 3 to act as a cushion, the surface of the stopper A on the lower side of the thin part 5' may be damaged due to collision of silica sand, sea sand, etc. through the base sheet of the thin part 5'. It has a matte finish and is engraved with characters, symbols 4, etc.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, 1 is a masking sheet, which has an adhesive layer 3 provided on a base film 2 made of a synthetic resin such as polypropylene, and the masking sheet 1 has required characters, Transparent part 5 in the shape of symbol 4 etc.
Alternatively, a thin wall portion 5'' is provided. It should be noted that the thin portion 5° refers to only the base film 2 without the adhesive layer 3. Next, in FIG. 3, A indicates an Ih tool, etc., and the masking sheet 1 described above is adhered to the surface of this tool, and the masking sheet 1 is shot-blasted with about 1 to 100 meshes of silica sand. As shown in Figure 4, satin-like letters, figures, etc. 4 are engraved on the surface of the stopper etc. A, and it becomes a matte surface, creating a difference from other glossy surfaces, making the letters, figures, etc. 4 clearly visible. It is possible. 5 and 6 show other embodiments, in which a masking sheet L is provided with a transparent portion 5 or a thin wall portion 5' for a large number of fasteners etc., and this is used in an apparatus as shown in FIG. 7 is a case, 8 is a plaster, and 9 is a dust container, which is stamped on the bottom of the case 7. A masking sheet 1 is adhered onto the fasteners A, and a seal is engraved with plaster 8.

In addition, if the part A' on which A is imprinted, such as a stopper, is cup-shaped, as shown in FIG. Arrange parts such as fasteners on which A is to be imprinted on a stand 10, and if the part A' to be imprinted has a convex periphery on its surface, mask the shape and size of the imprinted surface of part A°. Cut the sheet 1 and adhere it to the stamped surfaces of the parts A° arranged on the table 10, and insert the rubber plate 11 as shown in Fig. 10 between each arranged part A' to expose only the stamped surfaces. This is how it was done.

(Fig. 8) (Effects) The method for stamping characters, figures, etc. according to the present invention is based on a masking sheet 1 consisting of a base film 2 and an adhesive layer 3. Section 5 was established,
Attach the masking sheet 1 to a stop, button, hook, buckle A
Because the sheet is shot-blasted on one side, even if the lines that make up the letters or figures are thick, the stamped surface is made into an average, uniform satin surface by shot-blasting, so it remains clear. When stamping with a conventional die, force is applied to the corners of the characters, causing cuts to the metal plate on the stamping surface, or insufficient force causes sagging. do not have. In addition, even if the character shape is made of thin lines, there will be no cuts or deep unevenness on the stamping surface unlike in the past, and therefore there will be no deformation of the stopper, etc. Since characters, figures, etc. are engraved on a matte surface by blasting, the harder the engraved surface, the clearer the display.

Furthermore, by providing a large number of transparent parts or thin-walled parts on one masking sheet, it is simple and it is possible to efficiently stamp a large number of fasteners, etc.

4. Brief description of surfaces Figure 1 is a plan view of one embodiment of the masking sheet according to the present invention, Figures 2 a and b are partially enlarged sectional views thereof, and Figure 3 is an enlarged sectional view showing the stamping method. 4 is a plan view of a stamped stop, FIG. 5 is a plan view of another embodiment of the massing sheet, FIG. 6 is a perspective view of an embodiment of the stamping device, and FIGS. The figure is a sectional view showing a method of arranging the fasteners in the device, and FIGS. 9 and 10 are perspective views of the base rubber plates used for the arrangement.

1... Masking sheet, 2... Base film,
3... Adhesive layer, 4... Characters, figures, 5... Transparent portion 15'... Thin wall portion, A... Stopper, etc.

Claims (1)

[Claims] A masking sheet consisting of a base film and an adhesive layer is provided with transparent parts or thin parts with letters, figures, etc. in place of engravings, and the masking sheet is adhered to the surface of a stop, button, hook, buckle, etc. A method of stamping characters, figures, etc., characterized by applying shot blasting to the surface.