TW201941903A - Miniature part and molding method thereof including a pre-molding step for molding a prefinished product and a cutting step for cutting the prefinished product to form the miniature part - Google Patents

Abstract

This invention discloses a miniature part and a molding method thereof. The molding method includes a pre-molding step for molding a prefinished product and a cutting step for cutting the prefinished product to form the miniature part. The miniature part is made flaky and be provided with a first surface, a second surface opposite to the first surface and a cut surface annularly arranged at and connected to the peripheries of the first surface and the second surface, and a cut mark vertical to the first surface and the second surface is formed on the cut surface. Furthermore, the production yield and the miniaturization demand of the miniature part can be improved by using the molding method.

Description

Miniature component and its forming method

The present invention relates to a micro-component and a method for forming the same, and particularly to a micro-component and a method for forming the same that can improve production yield and meet the needs of miniaturization.

Plastic injection molding is the basic molding method for general plastic parts. Traditional plastic injection molding methods are mainly processed on a mold using at least one machine to form a molding space with the same shape as the predetermined shape, and then set the mold on An injection machine uses the injection machine to inject a heated, liquid plastic into the molding space through the first-stage channel formed on the mold, and then fills the plastic in the liquid state with In the molding space, the plastic in a liquid state is cooled in the mold to solidify into a solid plastic, and then the solidified plastic is taken out to complete the production and manufacture of the plastic component.

However, although the current level of injection molding technology has been quite high, it has faced a considerable bottleneck when injection molding a micro-component, because the plastic in the liquid state is heated and injected into the mold in the mold. When molding a space, gas will be generated in the molding space. This is the relationship between the materials of the plastic itself. Therefore, when manufacturing the micro-components, it is easy to cause the gas to remain in the molding space due to the irregular escape. The plastic cannot be completely filled in the molding space. After the plastic is cooled and solidified in the molding space, problems such as lack of materials or holes in the micro-parts may occur, and the gas remaining in the molding space. Gas will also cause whitening on the cured micro-components, which will not only cause production yield Low, and also affect product quality, the existing injection molding process can no longer meet the needs of product miniaturization.

Therefore, how to provide an injection molding process that can improve production yield, improve product quality, and meet the needs of product miniaturization is the technical means and its purpose to be solved by the present invention.

The main object of the present invention is to provide a micro-component and a molding method thereof, in particular to a micro-component and a molding method thereof capable of improving production yield and meeting the demand for miniaturization.

In order to achieve the above object, the present invention firstly proposes a molding method of a micro-component, which is arranged on a casing, and includes a pre-forming step and a cutting step. Wherein, the preforming step: providing a mold having at least one forming space, injecting a liquid material into the forming space, and curing the liquid material in the forming space to form a preform, and the preform has A finished product area and a blanking area extending from the finished product area. The cutting step: providing at least one pair of positioning members and at least one pair of cutting members surrounding the positioning member, so as to use the pair of positioning members to clamp the pre-finished product, so that the finished product area is positioned at the pair of positioning members. In time, the pair of cutting parts are used to cut the pre-finished product along the peripheral edge of the positioning part to cut off the finished product area and the blanking area, so that the finished product area forms a thin sheet and the peripheral edge has a cut surface. A micro-component, and the cutting surface ring is provided on a side edge of the micro-component, and a cutting mark is formed on the cutting surface.

In an embodiment, the pair of positioning members and the pair of cutting members are respectively located in the mold, and are assembled in the mold to form the molding space.

In one embodiment, the mold further includes a first mold base and a second mold base opposite to the first mold base and capable of being combined with each other to form the molding space.

In one embodiment, the pair of positioning members further includes a first positioning member located in the first mold base and a second positioning member located in the second mold base.

In one embodiment, the first positioning member is integrally formed with the first mold base, and the second positioning member is integrally formed with the second mold base.

In an embodiment, the first mold base further includes a first receiving slot pair surrounding the periphery of the first positioning room, and the second mold base further includes a second positioning member surrounding the first positioning slot. A second receiving slot on the periphery and opposite to the first receiving slot.

In an embodiment, the pair of cutting members further includes a first cutting member provided in the first receiving slot and a second cutting member provided in the second receiving slot, and the The first cutting member and the second cutting member can perform a reciprocating cutting operation between the first receiving groove and the second receiving groove.

In one embodiment, the liquid material is a liquid plastic material.

According to the above molding method, the present invention further provides a micro-component, which includes a first surface, a second surface, and a cut surface. The first surface is opposite the second surface. The cut surface ring is provided on the peripheral edge of the first surface and the second surface, and is used to connect the first surface and the second surface respectively, and the cut surface is formed with the first surface and the first surface. Cut marks between two surfaces.

In one embodiment, the cutting mark is further perpendicular to the first surface and the second surface.

Compared with the conventional technology, the micro-component of the present invention and its forming method have the following Advantages: After forming the finished product area including the finished product area and the blanking area in the mold in advance, the present invention can improve the micro-component by cutting the finished product area and the blanking area to form the micro-component. Problems such as lack of material or holes in the molding of micro-components directly in the mold can improve the production yield and meet the needs of miniaturization.

10‧‧‧Mould

11‧‧‧Molding space

111‧‧‧first gap

112‧‧‧Second Gap

12‧‧‧ the first mold base

13‧‧‧Second mold base

14‧‧‧ runner

15‧‧‧ the first receiving slot

16‧‧‧Second accommodation slot

20‧‧‧ Pre-finished products

21‧‧‧ Finished area

22‧‧‧Unloading area

30‧‧‧ Positioning parts

31‧‧‧First positioning piece

32‧‧‧Second positioning

40‧‧‧cut parts

41‧‧‧first cut

42‧‧‧ second cut

50‧‧‧ Miniature components

51‧‧‧first surface

52‧‧‧Second surface

53‧‧‧ cut surface

60‧‧‧First Actuator

61‧‧‧first damping unit

70‧‧‧Second Actuator

71‧‧‧Second damping unit

FIG. 1 is a schematic plan view of a mold provided in the present invention.

FIG. 2 is a schematic cross-sectional view of a mold provided in the present invention.

FIG. 3 is a schematic cross-sectional view of a pre-finished product provided in the present invention.

FIG. 4 is an exploded view of a pre-finished product provided in the present invention during cutting.

FIG. 5 is an exploded view of a pre-finished product provided in the present invention after being cut.

FIG. 6 is a schematic perspective view of a micro-component provided in the present invention.

FIG. 7 is a schematic cross-sectional view of a cutting tool cutting in a mold according to the present invention.

The detailed description and technical contents of the present invention are described below with reference to the drawings. As shown in FIG. 1 to FIG. 5, a molding method of the present invention includes a preforming step and a cutting step.

Specifically, the pre-forming step mainly includes firstly providing a mold 10 having at least one molding space 11 therein, and the mold 10 includes a first mold base 12 and a first mold base 12 opposite to the first mold base 12 and can be mutually Combine and form the second mold base 13 of the molding space 11, and then A liquid material (not shown in the drawing) is injected into the molding space 11 through the first flow path 14 on the mold 10 so that the liquid material is filled in the molding space 11, and then the liquid material is cured in the molding space 11. Then, a pre-finished product 20 is formed, as shown in FIG. 2. The pre-finished product 20 includes a finished product area 21 and a blanking area 22 extending from the finished product area 21. The area of the blanking area 22 is larger than the area of the finished product area 21. The liquid material referred to in the present invention is a plastic material in a liquid state, but in practice, other thermoplastic liquid materials can also be used.

The cutting step is to provide at least one pair of positioning members 30 and at least one pair of cutting members 40 surrounding the positioning member 30, as shown in FIG. 3. The pair of positioning members 30 are used to clamp the pre-finished product 20, so that the finished product region 21 is positioned between the pair of positioning members 30, and the blanking region 22 is protruded outside the pair of positioning members 30. In the embodiment, the pair of positioning members 30 includes a first positioning member 31 and a second positioning member 32 opposite to the first positioning member 31, so that the first positioning member 31 and the second positioning member 32 are clamped respectively. It is held on two opposite sides of the finished product area 21. Next, the pair of cutting members 40 are used to cut the blanking area 22 exposed outside the pair of positioning members 30 along the periphery of the positioning member 30 so that the blanking area 22 and the finished product area 21 are cut. Time was cut off. The pair of cutting members 40 includes a first cutting member 41 surrounding the first positioning member 31 and a second cutting member surrounding the outside of the second positioning member 32 and opposing the first cutting member 41. 42. When the pair of cutting members 42 performs cutting operations, the first cutting member 41 and the second cutting member 42 are respectively disposed on two sides of the blanking area 22, and then the pair The cutting member 40 and the pair of positioning members 30 are displaced in opposite directions in an axial direction, and the displacement between the positioning member 30 and the pair of cutting members 40 is used to cut the finished product region 21 and the blanking region 22. Then, the first positioning member 31 is separated from the second positioning member 32 to obtain a micro-component 50.

As shown in FIG. 4 to FIG. 6, the micro-component 50 obtained by the aforementioned molding method is in a sheet shape, and has a first surface 51, a second surface 52, and a cut surface 53. Wherein, the first surface 51 is opposite to the second surface 52, and the cut surface 53 is formed by using the pair of cutting tools 40 to cut off the finished product region 21 and the blanking region 22, and is arranged in the ring. The peripheral edges of the first surface 51 and the second surface 52 are connected to the first surface 51 and the second surface 52 respectively to form an outer contour of the micro-component 50. It is worth mentioning that, since the cutting surface 53 is formed by using the pair of cutting tools 40 to disconnect the finished product area 21 and the blanking area 22 from each other, a vertical surface is formed on the cutting surface 53 A cutting mark on the first surface 51 and the second surface 52.

According to this, the molding method of the micro-component provided in the present invention mainly includes forming the molding region 21 and the blanking region 22 on the pre-finished product 20 in advance. In this way, when the preform 20 is injected into the molding space 11 using the liquid material in the mold 10 (as shown in FIG. 2), the flow area of the liquid material can be increased, so that the liquid material can be completely filled in In the molding space 11, even if the gas generated in the molding space 11 is not completely exhausted, which causes a phenomenon of lack of material or holes in the molding space 11, the lack of materials or holes will not form in the The forming area 21 is formed in the blanking area 22, so that the forming area 21 does not have a phenomenon of lack of material or encapsulation. And after forming the micro-component 50 through the cutting step, a well-formed micro-component 50 can be obtained, which can not only improve the quality of the micro-component 50, but also improve the production yield, and at the same time meet the thin profile Requirements.

In addition, as shown in FIG. 2, FIG. 4, and FIG. 7, in this embodiment, the pair of positioning members 30 and the pair of cutting members 40 are mainly implemented in the mold 10. Wherein, the first positioning member 31 is disposed in the first mold base 12, the second positioning member 32 is disposed in the second mold base 13, and an inner portion of the first mold base 12 surrounds the first positioning member. First appearance around Piece 31 A receiving slot 15 is provided, and a second receiving slot 16 corresponding to the first receiving slot 15 is formed inside the second mold base 13 and surrounds the second positioning member 32. The first cutting member 41 is disposed in the first receiving slot 15, and the second cutting member 42 is disposed in the second receiving slot 15 opposite to the first cutting member 41. A first gap 111 is formed between the cutting member 41 and the second cutting member 42. A first actuating lever 60 is connected to the first cutting member 41 in the first receiving slot 15, and a first actuating rod 60 is disposed between the first cutting member 41 and the first receiving slot 15. A first damping unit 61 outside the lever 60, and the second cutting member 42 is connected to a second actuating lever 70 in the second receiving slot 16, and the second cutting member 42 and the second receiving slot A second damping unit 71 is provided between 16 to surround the outside of the second actuating lever 70, so that a space surrounding the first gap 111 is formed between the first cutting member 41 and the second cutting member 42. Second gap 112. The molding space 11 is composed of the first gap 111 and the second gap 112 and communicates with the flow channel 14. The contour of the first gap 111 is the same as the contour of the finished product region 21. The outline of the second gap 112 is the same as the outline of the blanking area 22.

In addition, in this embodiment, the first positioning member 31 and the first mold base 12 are integrally formed, and the second positioning member 32 and the first mold base 13 are also integrally formed. However, the first positioning member 31 and the second positioning member 32 may be separate components. This is only a description of the embodiment of the present invention.

Accordingly, when the liquid material enters the molding space 11 through the flow channel 14, the liquid material will gradually fill the molding space 11, and the liquid material located between the first gaps 111 will form the solidified material after curing. In the finished product region 21, the liquid material located between the second gaps 112 will form the blanking region 22 after curing. Then, a linear displacement effect of the first actuating rod 60 and the second actuating rod 70 is used in the mold 10 to simultaneously drive the first cutting member 41 and the The second cutting piece 42 moves along the axial direction of the first actuating rod 60 and the second actuating rod 70, and then cuts off the finished product area 21 and the blanking area 22, and finally the first mold base 12 and The second mold bases 13 are separated from each other. In this way, the molding of the micro-component 50 can also be completed directly inside the mold 10.

In summary, the present invention has indeed met the requirements for an invention patent, and a patent application was filed in accordance with the law. However, the above is only the preferred embodiment of the present invention, and the scope of patent application in this case cannot be limited by this. For example, all modifications or changes made by those familiar with the art of this case with the help of the spirit of the present invention should be covered by the following patent applications.

Claims (10)

A method for forming a micro-component includes the following steps: a pre-forming step: providing a mold having at least one forming space, injecting a liquid material into the forming space, and allowing the liquid material to solidify in the forming space to form A pre-finished product, the pre-finished product having a finished product area and a blanking area extending from the finished product area; and a cutting step: providing at least one pair of positioning members and at least one pair of cutting members surrounding the positioning member To use the pair of positioning members to clamp the pre-finished product, so that the finished product area is positioned between the pair of positioning members, and then use the pair of cutting members to cut the pre-finished product along the periphery of the positioning member to cut The finished product area and the blanking area are cut, so that the finished product area is formed into a sheet-shaped micro-component with a cut surface on the periphery, and the cut-surface ring is provided on the side edge of the micro-component, and the cut surface is formed There are cut marks. The method for forming a micro-component according to claim 1, wherein the pair of positioning members and the pair of cutting members are respectively located in the mold, and the molding space is formed in the mold. The method for forming a micro-component according to claim 2, wherein the mold further comprises a first mold base and a second mold base opposite to the first mold base and capable of being combined with each other to form the molding space. The method for forming a micro-component according to claim 3, wherein the pair of positioning members further includes a first positioning member located in the first mold base and a second positioning member located in the second mold base. The method for molding a micro-component according to claim 4, wherein the first positioning member and the first mold base are integrally formed, and the second positioning member and the second mold base are integrally formed. The method for forming a micro-component according to claim 4, wherein the first mold base is further packaged. It includes a first receiving groove pair surrounding the periphery of the first positioning chamber, and the second die holder further includes a second container surrounding the periphery of the second positioning member and opposite to the first receiving groove. Set slot. The method for forming a micro-component according to claim 6, wherein the pair of cutting members further includes a first cutting member provided in the first receiving slot and a second receiving slot provided in the first receiving slot. A second cutting member, and the first cutting member and the second cutting member can perform a reciprocating cutting action between the first receiving slot and the second receiving slot. The method for forming a micro-component according to claim 1, wherein the liquid material is a plastic material in a liquid state. A micro-component, which is in a thin sheet shape, includes: a first surface; a second surface opposite to the first surface; and a cut surface that is circumferentially arranged around the first surface and the second surface and is The first surface and the second surface are respectively connected, and a cutting mark is formed on the cutting surface between the first surface and the second surface. The micro-component according to claim 9, wherein the cut mark is further perpendicular to the first surface and the second surface.