TWI797818B - Mold with textured road surface and its manufacturing method - Google Patents

Abstract

One method of the present invention is to provide a "mold body", and obtain a mold through the steps of "making texture" and "forming holes". If necessary, the method may be subjected to a "surface preparation" procedure. The mold includes: a forming area is arranged on the mold, the forming area has at least one bottom surface, and at least one side surface stands on the bottom surface; at least one hole is arranged on the mold, and the hole is formed from the outer surface of the mold connected to the bottom or sides of the forming zone; and, a textured surface is provided on one of the bottom and sides of the forming zone. In this way, the mold has a textured surface, and the inner and outer sides of the transparent finished product also have textured surfaces, which also has the positioning function of light detection, and can also avoid pigments or dyeing, reducing production costs.

Description

Mold with textured road surface and its manufacturing method

The invention relates to mold technology, especially a method capable of producing a mold with at least one textured surface, which is suitable for the field of vacuum forming.

Known vacuum forming, for thermoplastic materials, performs the processing method of thermoforming. Usually, a thicker material is cut into a sheet, heated and softened, stretched and deformed by vacuum pressure and attached to the surface of the mold, after cooling and shaping, the finished product is removed from the mold, such as a receiving tray.

The thinner material becomes a coil. After heating and softening, the coil is attached to the surface of the mold with the help of vacuum pressure. After cooling, shaping, demoulding and cutting the coil, a receiving plate is obtained.

Known susceptor trays receive items such as electronic parts. Since the receiving tray has the property of being opaque, light incident on the surface of the receiving tray produces a refraction phenomenon, which is helpful for the detection of the photosensitive sensor and facilitates the delivery of the receiving tray to a predetermined position.

However, the light-tight feature comes from the fact that some pigments are mixed in the components of the receiving plate, so the receiving plate itself is not light-transmitting. Alternatively, a colored layer is attached to the surface of the receiving plate, and the colored layer makes the receiving plate opaque.

No matter which one it is, the proportion of these pigments or dyeing components takes time to adjust, which increases the additional production cost of the receiving plate.

In view of this, the inventor of this case proposed a method, the main purpose of which is to make a mold with a textured surface, produce a transparent finished product with textured surfaces on both the inner and outer sides, which has the positioning function of light detection, and can also avoid the use of pigments , to reduce production costs.

From the achievement of the above-mentioned purpose, the method of the present invention includes: cutting a forming area on an embryo according to the design, and the forming area has at least one side standing on a bottom surface; through electric discharge machining, chemical etching, sandblasting, laser bite Patterning, CNC engraving or other processing methods, forming a textured surface on the bottom or side of the forming area; and drilling at least one hole from the outer surface of the embryo body to the bottom or side of the forming area.

It further includes: a "surface treatment" step, through electroplating, anodic treatment, chemical reaction or other surface treatment methods, the outer surface of the forming area is formed into a smooth treated surface. Wherein, the treated surface is the surface of a surface treated layer attached to the forming zone. In addition, during the chemical reaction, the surface treatment layer contains polytetrafluoroethylene (also known as Teflon).

The process of another method of the present invention includes: cutting a forming area in an embryo body according to the design, and the forming area has at least one side standing on a bottom surface; drilling at least one hole from the outer surface of the embryo body to the bottom surface or side surface of the forming area; And through electrical discharge machining, chemical etching, sand blasting, laser embossing, CNC engraving or other processing methods, a textured surface is formed on the bottom or side of the forming area.

It further includes: a "surface treatment" step, through one of electroplating, anodic treatment or chemical reaction, the outer surface of the forming area is formed into a smooth treated surface, and the treated surface is the surface of a surface treatment layer attached to the forming area.

The difference between the first and second methods of the present invention is that the order of "forming holes" and "making textures" is changed, and the rest of the process remains unchanged, and the same mold can be made.

Specifically, the present invention makes a mold; a forming zone is arranged on the mold, and the forming zone has at least one bottom surface, and at least one side surface stands on the bottom surface; at least one hole is arranged on the mold, and the hole extends from the The outer surface of the mold is connected to the bottom surface or the side surface of the forming area; and, a textured surface is provided on one of the bottom surface and the side surface of the forming area.

Wherein, the outer surface of the forming area has a treated surface, and the position of the treated surface corresponding to the textured surface has a textured surface with the same shape. Also, the treated surface is the surface of a surface treated layer attached to the forming zone. In addition, the texture surface depth ranges from 2 μm to 3 mm.

In this way, the method of the present invention produces a mould, which has a textured surface, and the outer side of the transparent finished product also has a textured surface, which also has the positioning function of light detection, and can also avoid pigments or dyeing, reducing production costs.

In order to make the purpose, features and advantages of the present invention easy to understand, one or more preferred embodiments will be described in detail as follows in conjunction with the accompanying drawings.

10: Mold embryo body

11: Texture production

12: Forming holes

13:Surface treatment

20: Embryo body

21: Forming area

22: bottom surface

23: side

24, 24a, 25, 25a: grain surface

26: hole

27: Processing surface

Fig. 1 is the manufacturing process of the mold first method of the present invention.

Figures 2-5 show the control of the first preparation method.

Fig. 6 is the manufacturing process of the second mold method of the present invention.

Figures 7-10 show the control of the second preparation method.

Next, in conjunction with the accompanying drawings, describe the embodiment of this case. In the drawings, the same or similar structures or units are denoted by the same reference numerals. It is foreseeable that the described embodiments are only some examples of this case, not all embodiments. Other embodiments that can be deduced based on the examples described above, or structures that can be modified or changed as needed, all belong to the scope of protection of this case.

In the following descriptions, directional terms such as "upper", "lower", "left", "right", "front", "rear", "inner", "outer" and "side" refer only to the directions of the drawings . The use of directional terms is for a better and clearer description and understanding of this case, and does not express or imply that the device or component described must have a specific orientation, structure, and operation, so it cannot be understood as a limitation on the technical content of this case.

In the following descriptions, "mounted", "connected", "connected" or "set on" should be interpreted in a broad sense, such as fixed connection, detachable connection, integral connection, mechanical connection, unless there are specific and clear specifications and limitations , directly connected, indirectly connected, or internally connected between two elements. Those skilled in the field of this case can understand the specific meanings of the above terms in each embodiment and even this case by virtue of common knowledge or experience.

Unless otherwise specified, in the following description, "plurality" means two or more.

Figure 1 draws a flow chart, showing the first method of the present invention, providing the steps of "mold blank body 10", going through the two processes of "texture making 11" and "forming holes 12", and then performing the procedure of "surface treatment 13" , process and make a mold. In particular, the mold produced by the first method has at least one textured surface. Next, in conjunction with Figures 2 to 5, the first method is further described, and each process is implemented in the specific composition of the item.

As shown in Figures 1 and 2, in the step of "mold blank 10", a forming area 21 is cut on one blank 20 according to the design. The design referred to here generally refers to a commissioner stating his own conception, presenting it in blueprints or electronic files through drawing, reading dimensions such as length, width, height or depth, and cutting out the same shape in the embryo body 20. Forming zone 21.

The cutting referred to here generally refers to one of the processing methods such as turning, milling, drilling, cutting, etc., and the behavior of mechanical automatic processing through computer numerical control (Computer Numerical Control, abbreviated as CNC).

In this embodiment, the forming area 21 has a bottom surface 22, and two side surfaces 23 stand on both sides of the bottom surface 22 respectively. In some embodiments, the forming area 21 has a top surface, and at least one side surface 23 extends downward around the top surface, which is also within the allowable scope of the present invention.

In Figures 1 and 3, in the step of "making texture 11", a textured surface 24 is formed on the bottom surface 22 of the forming area 21, and a textured surface 25 is formed on each of the two side surfaces 23.

The formation referred to here is to form the desired textured surfaces 24 and 25 on the bottom surface 22 and the side surface 23 of the forming area 21 through one of the methods of electric discharge machining, chemical etching, sandblasting, laser embossing or CNC engraving.

As shown in Figures 1 and 4, in the step of "forming holes 12", a set of holes 26 are penetrated inside the embryo body 20. In this embodiment, through CNC drilling, manual drilling or a combination of the two methods, one end of each hole 26 is connected to the outer surface of the embryo body 20 (i.e. the bottom surface), and the other end reaches the texture surface 24 at the bottom of the forming area 21. .

In some embodiments, one end of the hole 26 is connected to the outside of the embryo body 20, and the other end directly reaches the textured surface 25 inside the embryo body 20 (ie, the side of the forming area 21), which is also within the scope of the present invention.

In addition, the depth of the textured surface 24 or 25 is as shallow as 2 μm and as deep as 3 mm or more, which is also within the allowable range of the present invention.

The hole 26 referred to here generally refers to a passage for guiding gas out and in. Therefore, the mold made by the first method can be applied in the field of vacuum forming. The principle of vacuum forming is to extract or suck away the air, so that the object to be formed (usually a thermoplastic and softened material) and the forming area 21 become a vacuum state, so that the object to be formed closely contacts the forming area 21 and hardens The way of shaping.

As shown in Figures 1 and 5, in the "surface treatment 13" step of this embodiment, a treatment surface 27 is formed on the outer surface of the forming area 21 through one of electroplating, anodic treatment or chemical reaction, and the treatment surface 27 is smooth. Contributes to the demoulding of a finished product (not shown).

For example, in terms of electroplating, a surface treatment layer is attached to the forming area 21 , the surface treatment layer is an electroplating layer, and the surface of the electroplating layer is a smooth treated surface 27 .

Or in terms of anodic treatment, the surface treatment layer attached to the forming area 21 is an anodic treatment layer, and the surface of the anodic treatment layer is a smooth treatment surface 27 .

In terms of chemical reactions, fluorocarbon polymers are widely used. At present, PVDF, PTFE, FEP, PFA, ETFE, New-PTFE, and TFM have been developed into several groups. For example, the surface treatment layer attached to the forming area 21 includes PTFE (Chinese translation is called polytetrafluoroethylene, also known as Teflon).

In this way, the treated surface 27 corresponds to the position of the textured surface 24 or 25, and has the textured surface 24a or 25a having the same shape.

In the "surface treatment 13" step of some embodiments, there is no layered structure, but the surface of the forming area 21 is treated to be smooth, so as not to damage the depth of the textured surface 24 or 25 excessively.

According to the description of the first method above, making a mold includes: a forming area 21 is arranged on the mold, and the forming area 21 has at least one bottom surface 22, and at least one side surface 23 stands on the bottom surface 22; a group or At least one hole 26 is provided in the mold, the hole 26 connecting from the outer surface of the mold to the bottom surface 22 or the side surface 23 of the forming zone 21 .

In addition, the bottom surface 22 of the forming area 21 has a textured surface 24 , and the side surface 23 of the forming area 21 also has a textured surface 25 . Wherein, the appearance of the forming area 21 has a treated surface 27, which is the surface of a surface treatment layer attached to the forming area 21, so the position of the treated surface 27 corresponding to the textured surface 24 or 25 has a textured surface with the same shape. 24a or 25a.

Judging from the process in Figure 6, the steps of "mold blank body 10" are still provided as usual, and the final processing procedure of "surface treatment 13" remains unchanged, and then the two processes of "texture making 11" and "hole formation 12" are combined. The order is reversed to form the second production method of the present invention, which can obtain the required mold. As for whether the mold has a textured surface, it will be discussed with Figures 7 to 10, and each process is implemented in the specific composition of the item.

As shown in Figures 6 and 7, in the step of "mold blank 10", the required forming area 21 is cut on the blank 20 according to the design. The forming area 21 has a bottom surface 22, and the two sides of the bottom surface 22 stand respectively. 23 on one side.

As shown in Figures 6 and 8, in the step of "forming the hole 12", a group of holes 26 pass through the inside of the embryo body 20, and one end of each hole 26 is connected to the outer surface of the embryo body 20, and the other end is directly connected to the forming area 21. Bottom 22.

Of course, one end of the hole 26 is connected to the outside of the embryo body 20, and the other end reaches the inside of the embryo body 20 (i.e. the side 23 of the forming area 21), which belongs to the allowable range of the present invention.

In Figures 6 and 9, the "texturing 11" step described above forms a textured surface 24 on the bottom surface 22 of the forming area 21 through one of the methods of electrical discharge machining, chemical etching, sandblasting, laser embossing, or CNC engraving. , and each of the two sides 23 forms a textured surface 25 . Wherein, the textured surfaces 24 , 25 are made in the forming area 21 without blocking the holes 26 .

In Figures 6 and 10, in the "surface treatment 13" step, through one of electroplating, anodic treatment or chemical reaction, a treatment surface 27 is formed on the outer surface of the forming area 21. The treatment surface 27 is smooth and helps In the demoulding of a finished product (not shown).

Therefore, the treated surface 27 is the surface of the surface treatment layer attached to the forming area 21, which corresponds to the position of the textured surface 24 or 25, and has the textured surface 24a or 25a with the same shape. If necessary, attaching a surface treatment layer to other parts of the embryo body 20 is also within the selection range of the target area of the present invention.

For the mold made by the method, the pattern, shape or texture of the textured surface has the positioning function of light detection. The finished product of the mold is transparent, and its outer side has a textured surface with the positioning function of light detection, and the cost of paint or dyeing is eliminated, and the production cost is reduced.

Those skilled in the art can understand and make changes to the above-disclosed embodiments without departing from the broad concepts of the present disclosure. Therefore, this case is not limited to the specific embodiments disclosed in the specification, and all modifications made according to the spirit and technical scope of this case shall be covered and protected by the textual content defined in the scope of the patent application.

10: Mold embryo body

11: Texture production

12: Forming holes

13:Surface treatment

Claims (5)

A method for making a mold with a textured surface. The step of making a mold includes: cutting a forming area (21) on an embryo body (20) according to the design, and the forming area (21) has at least one side (23) standing on a bottom surface (22); drill at least one hole (26) from the outer surface of the embryo body (20) to the bottom surface (22) or side (23) of the forming area (21); through electrical discharge machining, chemical etching, sandblasting, laser scratching, CNC engraving or other processing methods form a textured surface (24 or 25) on the bottom surface (22) or side (23) of the forming area (21), and the textured surface (24 or 25) has a positioning function for optical detection and Do not block the hole (26); and form a treatment surface (27) on the outer surface of the forming area (21) by electroplating, anodic treatment, chemical reaction or other surface treatment methods, and the treatment surface (27) is on the surface of the non-grained surface. The road surface is smooth, and the treated surface (27) has a consistent shape on the textured surface (24 or 25). A method for making a mold with a textured surface. The step of making a mold includes: cutting a forming area (21) on an embryo body (20) according to the design, and the forming area (21) has at least one side (23) standing on a bottom surface On (22); through electrical discharge machining, chemical etching, sandblasting, laser engraving, CNC engraving or other processing methods, a photodetector with optical detection is formed on the bottom (22) or side (23) of the forming area (21) A textured surface (24 or 25) for positioning functions; at least one hole (26) is drilled from the outer surface of the embryo body (20) to the bottom surface (22) or side surface (23) of the forming area (21); and Through electroplating, anodic treatment, chemical reaction or other surface treatment methods, a treatment surface (27) is formed on the outer surface of the forming area (21), and the treatment surface (27) is attached to a surface treatment layer of the forming area (21) The surface, the treated surface (27) is smooth on the non-textured surface, and the treated surface (27) has a consistent shape on the textured surface (24 or 25). The method for making a mold with a textured surface as claimed in claim 1 or 2, wherein, during the chemical reaction, the treated surface (27) contains polytetrafluoroethylene. A mold with a textured surface, a mold is made according to any one of the claims 1 to 3, and the mold includes: a forming area (21), which is arranged on the mold, and the forming area (21) has at least A bottom surface (22) and at least one side (23) stand on the described bottom surface (22); At least one hole (26), it is located at the described mould, and this hole (26) one end is connected to the The other end is connected to the bottom surface (22) or side (23) of the forming area (21); a texture surface (24 or 25), which has the positioning function of light detection, and the texture surface (24 or 25) is set One of the bottom surface (22) and the side surface (23) of the described forming area (21); The textured surface is smooth, and the treated surface (27) has a consistent shape on the textured surface (24 or 25). The mold with a textured surface according to claim 4, wherein the depth of the textured surface (24 or 25) is as shallow as 2 μm and as deep as 3 mm or more.

Images