CN100345232C

CN100345232C - Push-button forming method and push-button manufactured through the method

Info

Publication number: CN100345232C
Application number: CNB2004100272411A
Authority: CN
Inventors: 廖海波
Original assignee: Mitac Precision Technology Shunde Ltd
Current assignee: Mitac Precision Technology Shunde Ltd
Priority date: 2004-05-20
Filing date: 2004-05-20
Publication date: 2007-10-24
Anticipated expiration: 2024-05-20
Also published as: CN1700375A

Abstract

The present invention discloses a key forming method and a key manufactured by the method. The key comprises a basal body, a character which is arranged on the basal body and is provided with a sealing ring, and a covering layer arranged between the periphery of the character and the interior of the sealing ring, wherein the basal body is provided with a passage for connecting the inside and the outside of the sealing ring under the outline of the character with the sealing ring. The material filling the passage is the same with the material of the covering layer between periphery of the character and the interior of the sealing ring. The key forming method comprises the forming processes of the basal body and the covering layer. In the forming process of the basal body, the character with the sealing ring corresponding to a forming male mould is provided with a thimble; thus, the passage for connecting the inside and the outside of the sealing ring can be formed in the forming process of the basal body. In the forming process of the covering layer, the forming material of the covering layer enters the inner side of the sealing ring from the passage so as to ensure that the inner side material and the outer side material of the sealing ring are coincident and are good for prominently displaying the outline of the character.

Description

The button forming method reaches the button by this method manufacturing

[technical field]

The relevant a kind of button forming method of the present invention reaches the button by this method manufacturing, relates in particular to font or digital forming method on a kind of button.

[background technology]

The font of the button of at present big multicomputer and telephone set is with numeral and adopts the mode of surface printing to make, but the defective of this kind mode is: after long-time use, above-mentioned font and numeral all can be worn and make the user can't see clearly described font with the numeral and may press the wrong button.Certainly industry also has the mode that adopts ejection formation to form described font and numeral, common described font and numeral are to make with black material, and the cover layer of font outside adopts other material, as the white manufacturing, and described cover surface is concordant with the font surface, therefore font can not faded fully because being subjected to the finger friction for a long time, the mode of its manufacturing generally is the inner face that is placed in master mold with a male model with certain clearance, and be provided with the font of indent at the inner face of male model, inject plastic cement then betwixt, so just, can form plates at the male model end face, and its surface has and the former identical protrusion font in master mold bottom surface that is positioned at, then again with this male model Rotate 180 degree, it is placed in another second master mold again, the inner surface of second master mold smooth, and the inner surface of the upper surface of font and second master mold is at a distance of certain distance, therefore the plastic cement of moulding for the second time injects the font top from the top, the plastic cement that so can guarantee moulding is for the second time inserted numeral with closed-loop and font fully (as " 6; 9; 8; 0 ") closed-loop inside and outside, again second plastic layer above the described font is cut off afterwards, thereby make character contour expose, the defective of this kind mode is: described cutting action is too numerous and diverse, and for guaranteeing the smooth of keytop, usually after cutting, also need a grinding step, cause therefore that whole operation is long and unfavorable enhances productivity.

[summary of the invention]

The object of the invention is to provide a kind of button forming method and by the button of this method manufacturing, described method operation is less, enhances productivity and reduces production costs thereby be beneficial to.

Button forming method of the present invention may further comprise the steps: (1) provides a male model and first and second master mold, and wherein the first master mold inner surface is provided with the font of indent, and wherein the part font has closed-loop, and male model inside is provided with the thimble corresponding with described closed-loop; (2) male model is placed on first master mold with certain interval, then fill first plastic material betwixt and form matrix, thereby wherein said thimble protrudes the male model end face and hold with the first master mold contacted inner surfaces and to form a passage that is connected inside and outside the closed-loop on the matrix from first pouring slot; (3) male model and first master mold are separated, and it is concordant with the male model surface to make thimble shrink, with male model and second master mold fit mutually, wherein the contacted inner surfaces of the font end face on the matrix and second master mold connects, fill second plastic material from second pouring slot then and form cover layer, wherein second plastic material enters the closed-loop inboard in above-mentioned passage, thereby makes being filled to by second plastic material in the interior outside of closed-loop and the passage.

Button of the present invention comprises a matrix, be located at the font that has closed-loop on the matrix and be located at the peripheral cover layer with closed-loop inside of font, wherein said matrix has the passage that connects inside and outside the closed-loop at the profile of the font that has closed-loop, and it is identical to fill the material covering layer material peripheral with font and closed-loop inside of described passage.

Adopt said method, can guarantee that the button that has the closed-loop font just can be made into through the post forming process, compared with prior art, it does not need cutting and grinding step after the moulding, therefore is beneficial to the simplification processing procedure, enhances productivity.

[description of drawings]

Figure 1A is the schematic diagram of matrix forming process of the present invention.

Figure 1B is the partial enlarged drawing of Figure 1A.

Fig. 2 is the schematic perspective view of matrix.

Fig. 3 is the schematic diagram of cover layer forming process of the present invention.

Fig. 4 is the partial enlarged drawing of Fig. 3.

Fig. 5 is the schematic perspective view of button of the present invention.

[embodiment]

See also Fig. 1 to shown in Figure 5, button forming method of the present invention may further comprise the steps: (1) provides a male model 10 and first master mold 20 and second master mold 30, wherein first master mold, 20 inner surfaces are provided with the font groove 200 of indent, wherein part font groove 200 is closed state, and male model 10 inside are provided with the thimble 101 corresponding with described font groove 200; (2) male model 10 is placed on first master mold 20 with certain interval, then fill first plastic material formation matrix 40 at

male model

10 and 20 of first master molds from first pouring slot 201, wherein first plastic material is packed in the partially enclosed font groove 200 and shape is worn the font 45 of closed-loop 41, thereby and protrude male model 10 end faces and hold with first master mold, 20 contacted inner surfaces at thimble described in the forming process 101 and on matrix 40, form a passage 42 that is connected inside and outside the closed-loop 41; (3) male model 10 and first master mold 20 are separated, and it is concordant with male model 10 surfaces to make thimble 101 shrink, with male model 10 and second master mold 30 fit mutually, wherein font 45 end faces on the matrix 40 and the contacted inner surfaces of second master mold 30 connect, fill second plastic material from second pouring slot 301 then and form cover layer 44, wherein second plastic material enters closed-loop 41 inboards in above-mentioned passage 42, thereby makes being filled to by second plastic material in the closed-loop 41 interior outsides and the passage 42.

Comprise a matrix 40, be located at the font that has closed-loop 41 45 on the matrix 40 and be located at the peripheral cover layer 44 with closed-loop 41 inside of font 45 according to the button 4 of above-mentioned forming method manufacturing thus, wherein said matrix 40 has at the profile of the font 45 that has closed-loop 41 and connects the inside and outside passage 42 of closed-loop 41, and it is identical with font 45 cover layer 44 materials peripheral and closed-loop 41 inside to fill the material of described passage 42.

In said method, color between first plastic material (matrix 40 materials) and second plastic material (filling the material of described passage 42 and cover layer 44 materials of font 45 peripheries and closed-loop 41 inside) differs bigger, can be white as first plastic material, and second plastic material can be black, and so the profile of font 45 can clearly be debated.Simultaneously said process can once be made in the post forming process, therefore can omit cutting of the prior art and process of lapping, so operation is less and be beneficial to and enhance productivity.

Claims

1, a kind of button forming method, may further comprise the steps: (1) provides a male model and first master mold and second master mold, wherein the first master mold inner surface is provided with the font groove of indent, and wherein part font groove is closed state, and male model inside is provided with and the corresponding thimble of described font groove; (2) male model is placed on first master mold with certain interval, then form matrix to filling first plastic material therebetween from first pouring slot, wherein first plastic material is packed in the partially enclosed font groove and shape is worn the font of closed-loop, thereby and protrude the male model end face and hold with the first master mold contacted inner surfaces at thimble described in the forming process and forming a passage that is connected inside and outside the closed-loop on the matrix; (3) male model and first master mold are separated, and it is concordant with the male model surface to make thimble shrink, with male model and second master mold fit mutually, wherein the contacted inner surfaces of the font end face on the matrix and second master mold connects, fill second plastic material from second pouring slot then and form cover layer, wherein second plastic material enters the closed-loop inboard in above-mentioned passage, thereby makes being filled to by second plastic material in the interior outside of closed-loop and the passage.

2, button forming method as claimed in claim 1 is characterized in that: the color between first plastic material and second plastic material differs bigger.

3, a kind of button, comprise a matrix, be located at the font that has closed-loop on the matrix and be located at the peripheral cover layer with closed-loop inside of font, it is characterized in that: described matrix has the passage that connects inside and outside the closed-loop at the profile of the font that has closed-loop, and it is identical to fill the material covering layer material peripheral with font and closed-loop inside of described passage.

4, button as claimed in claim 3 is characterized in that: the color of filling between the material of the covering layer material of the peripheral and closed-loop inside of the material of described passage and font and matrix differs bigger.