Font processing technology

Abstract

The invention provides a font processing technology which comprises the following steps: S1, designing a combined electrode according to the shape of a cavity on a mold core: the combined electrode comprises a first electrode and a second electrode, the first electrode is provided with a font appearance electrode, the font appearance electrode is designed corresponding to a font, and a plurality of sharp corner processing parts are reserved at sharp corner positions of the font; a sharp corner electrode is arranged on the second electrode and is used for removing the sharp corner processing part and forming a font sharp corner; s2, a combined electrode is machined, specifically, a proper carving knife is selected to conduct CNC milling machining on the combined electrode; s3, first-time electric discharge machining is conducted, specifically, a first electrode is used for conducting first-time electric discharge machining on the mold core, and primarily-machined characters are obtained; and S4, second-time electric discharge machining is conducted, specifically, a second electrode is used for conducting second-time electric discharge machining on the mold core, font sharp corners are formed, and final fonts are obtained. The font sharp corner position is split and avoided, complementary machining is conducted through the combined electrode, font sharp corners can be formed, and the appearance quality of products is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of mold mechanism processing, and in particular to a font processing technology.

Background Art

[0002] In response to the appearance requirements of products, some injection-molded products need to add concave fonts on the product appearance surface, and it is required that there is no rounding or the rounding is less than R0.05mm at the sharp corners (angles less than 180° with both sides of the angle being straight edges) of the fonts after molding to ensure the aesthetic appearance of the product. The traditional processing technology is to perform electrical discharge machining on the mold core to add convex fonts. Specifically, a whole electrode is designed, and a font electrode is designed corresponding to the font shape at the position where the font needs to be processed on the mold core. The whole electrode is used to perform electrical discharge machining on the mold core, so that fonts are formed on the product after injection molding. However, when performing CNC (computer numerical control) machining on the whole electrode, even with the smallest diameter engraving tool of D0.2mm, there will be a rounding with a tool radius of R0.1mm at each sharp corner of the font electrode. As a result, after the whole electrode performs electrical discharge machining on the mold core, the convex fonts on the mold core will also correspondingly generate rounding, making the font appearance of the product after injection molding fail to meet the customer's requirements.

[0003] In view of this, the present invention provides a font processing technology to solve the above problems.

Summary of the Invention

[0004] In order to solve the problem that when performing font electrical discharge machining on the mold core using a whole electrode, due to the inability to ensure that there is no rounding at each sharp corner of the font-shaped electrode during the processing of the whole electrode, rounding also appears at the sharp corners of the product font after molding, failing to meet the processing requirements and thus causing customer complaints. For this reason, the present invention provides a font processing technology to solve the above problems.

[0005] The solution of the present invention to solve its technical problems is: a font processing technology, including the following steps:

[0006] S1: Design a combined electrode according to the cavity shape on the mold core: The combined electrode includes a first electrode and a second electrode, and the first electrode and the second electrode correspond to the cavity shape of the mold core. Among them, a font-shaped electrode is provided at the position corresponding to the font on the cavity on the first electrode. The font-shaped electrode is designed corresponding to the font and several sharp-corner processing parts are reserved at the sharp-corner positions of the font. A sharp-corner electrode is provided on the second electrode. The position where the sharp-corner electrode corresponds to the intersection line of the sharp-corner processing part and the font is a straight edge, which is used to remove the sharp-corner processing part and form the sharp corner of the font;

[0007] S2: Process the combined electrode: Use an engraving tool with a suitable tool diameter to perform CNC (computer numerical control) milling on the combined electrode;

[0008] S3: First electrical discharge machining: Use the first electrode to perform the first electrical discharge machining on the mold core to obtain a preliminarily machined font, and the shape of the preliminarily machined font is consistent with the shape of the font outer electrode;

[0009] S4: Second electrical discharge machining: Use the second electrode to perform the second electrical discharge machining on the mold core, remove the sharp corner machining parts on the preliminarily machined font obtained in S3, form the font sharp corners and obtain the final font.

[0010] Preferably, the font is R, which includes three font sharp corners.

[0011] Preferably, in S2, a carving tool with a diameter of 0.5 mm can be selected to perform CNC milling on the combined electrode.

[0012] Preferably, three sharp corner machining parts are reserved on the font outer electrode of the first electrode.

[0013] Preferably, the sharp corner electrode on the second electrode is quadrilateral.

[0014] The beneficial effect of the present invention is that by splitting and avoiding at the positions of the font sharp corners and using the combined electrode for complementary machining, straight edges can be achieved at the font sharp corners in different directions, ensuring the appearance quality of the product.

Description of the Drawings

[0015] Figure 1 is the process flow chart of a font machining process of the present invention.

[0016] Figure 2 is the process flow chart of an embodiment of the present invention.

[0017] Figure 3 is the schematic structural diagram of the first electrode in an embodiment of the present invention.

[0018] Figure 4 is the schematic structural diagram of the second electrode in an embodiment of the present invention.

[0019] Figure 5 is the combined schematic diagram of the combined electrode (the first electrode and the second electrode) in an embodiment of the present invention.

[0020] Figure 6 is the schematic diagram of the mold core obtained after two electrical discharge machinings in an embodiment of the present invention.

[0021] Figure 7 is Figure 6 the partial enlarged schematic diagram.

Detailed Embodiments

[0022] To further elaborate on the technical means and effects adopted by the present invention, the following describes it in detail in combination with the embodiments of the present invention and their accompanying drawings.

[0023] The present invention provides a font processing technology, which includes the following steps:

[0024] S1: Design a combined electrode 3 according to the shape of the cavity 70 on the mold core 7: The combined electrode 3 includes a first electrode 1 and a second electrode 2, and the first electrode 1 and the second electrode 2 correspond to the shape of the cavity 70 on the mold core. Among them, a font outline electrode 10 is provided at the position corresponding to the font 700 on the cavity 70 on the first electrode 1. The font outline electrode 10 is designed corresponding to the font 700 and several sharp corner processing parts 100 are reserved at the sharp corner positions of the font 700. A sharp corner electrode 20 is provided on the second electrode 2. The sharp corner electrode 20 is arranged avoiding the font 700. The position of the sharp corner electrode 20 corresponding to the intersection line of the sharp corner processing part 100 and the font 700 is a straight edge, which is used to remove the sharp corner processing part 100 and form the font sharp corner;

[0025] S2: Process the combined electrode 3: Use a carving tool with a suitable tool diameter to perform CNC (computer numerical control) milling on the combined electrode 3;

[0026] S3: First discharge machining: Use the first electrode 1 to perform the first discharge machining on the mold core 7 to obtain a preliminarily processed font, and the shape of the preliminarily processed font is the same as the shape of the font outline electrode 10;

[0027] S4: Second discharge machining: Use the second electrode 2 to perform the second discharge machining on the mold core 7 to remove the sharp corner processing parts 100 on the preliminarily processed font obtained in S3, form the font sharp corner and obtain the final font 700.

[0028] The following takes the example of processing the font R on the mold core 7 to elaborate the steps of a font processing technology of the present invention. The font R includes three sharp corners, and the font processing technology includes the following steps:

[0029] S100: Design a combined electrode 3 according to the shape of the cavity 70 on the mold core 7: The combined electrode 3 includes a first electrode 1 and a second electrode 2, and the first electrode 1 and the second electrode 2 correspond to the shape of the cavity 70 on the mold core. Among them, an "R"-shaped font outline electrode 10 is provided on the first electrode 1. The "R"-shaped font outline electrode 10 reserves three sharp corner processing parts 100 compared with the font R. A sharp corner electrode 20 is provided on the second electrode 2. The sharp corner electrode 20 is quadrilateral and is used to remove the sharp corner processing parts 100 and form the font sharp corner;

[0030] S200: Process the combined electrode 3: Use a carving tool with a diameter of 0.5 mm to perform CNC (computer numerical control) milling on the combined electrode 3;

[0031] S300: First EDM: The mold core 7 is subjected to the first EDM using the first electrode 1 to obtain a preliminarily processed font, which is in the shape of "R" and includes three sharp-corner processing parts 100;

[0032] S400: Second EDM: The mold core 7 is subjected to the second EDM using the second electrode 2 to remove the three sharp-corner processing parts 100 on the preliminarily processed font obtained in S3, form the sharp corners of the font R, and obtain the final font R.

[0033] The beneficial effect of the present invention is that by splitting and avoiding the sharp corners of the font, and using the combined electrode 3 for complementary processing, straight edges can be achieved at the sharp corners of the font in different directions, ensuring the appearance quality of the product.

[0034] It should be noted that the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes, and decorations made by any person skilled in the art to the above embodiments based on the technical solution of the present invention fall within the protection scope of the present invention.

Claims

1. A font processing technology, characterized in that, It includes the following steps: S1: Design a combined electrode according to the cavity shape on the mold core: The combined electrode includes a first electrode and a second electrode, and the first electrode and the second electrode correspond to the shape of the mold core cavity. Among them, a font outline electrode is provided at the position corresponding to the font on the cavity on the first electrode. The font outline electrode is designed corresponding to the font and several chamfer machining parts are reserved at the sharp corners of the font. A chamfer electrode is provided on the second electrode. The straight edge of the chamfer electrode corresponds to the position of the intersection line between the chamfer machining part and the font, and is used to remove the chamfer machining part to form the font chamfer; S2: Machine the combined electrode: Use a carving tool with a suitable tool diameter to perform CNC (Computer Numerical Control) milling on the combined electrode; S3: First electrical discharge machining: Use the first electrode to perform the first electrical discharge machining on the mold core to obtain a preliminarily machined font, and the shape of the preliminarily machined font is the same as the shape of the font outline electrode; S4: Second electrical discharge machining: Use the second electrode to perform the second electrical discharge machining on the mold core to remove the chamfer machining parts on the preliminarily machined font obtained in S3, form the font chamfer and obtain the final font.

2. The font processing technology according to claim 1, characterized in that: The font is R, which includes three font chamfers.

3. The font processing technology according to claim 1, characterized in that: In S2, a carving tool with a diameter of 0.5 mm can be selected to perform CNC (Computer Numerical Control) milling on the combined electrode.

4. The font processing technology according to claim 1, characterized in that: The font outline electrode on the first electrode reserves three chamfer machining parts.

5. The font processing technology according to claim 1, characterized in that: The chamfer electrode on the second electrode is quadrilateral.

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