TWI670160B - Micro component and molding method thereof - Google Patents

Abstract

A microcomponent and a method of molding the same, the molding method comprising a preforming step for forming a preform and a cutting step of cutting the preform to form a microcomponent. Making the micro-component into a sheet shape, and having a first surface, a second surface opposite to the first surface, and a cut surface annularly connected to the circumference of the first surface and the second surface, and the A cut mark perpendicular to the first surface and the second surface is formed on the cut surface. Further, by the molding method, the production yield of the micro-component and the demand for miniaturization can be improved.

Description

Micro component and molding method thereof

The present invention relates to a micro-component and a molding method thereof, and more particularly to a micro-component capable of improving production yield and meeting miniaturization requirements and a molding method thereof.

Plastic injection molding is the basic molding method for general plastic parts. The traditional plastic injection molding method mainly uses at least one machine on a mold to form a molding space with the same shape as the predetermined shape, and then the mold is placed on the mold. An injection machine is arranged to inject a heated plastic liquid into the molding space through the injection machine to fill the molding space through the first-class road formed on the mold, and the plastic to be filled in a liquid state is filled in In the molding space, after the plastic which is in a liquid state is cooled in the mold and solidified into a solid plastic, the plastic which is taken out and solidified is taken out, and the production and production of the plastic part can be completed.

However, although the current injection molding process is already quite high, when injection molding a micro-component, it faces a considerable bottleneck because the plastic in the form of a liquid is heated and injected into the mold. When the space is formed, gas is generated in the molding space, which is a relationship between the materials of the plastic itself. Therefore, when the micro component is manufactured, it is easy to keep the gas in the molding space because the escape is not smooth. The plastic cannot be completely filled in the molding space, and after the plastic is cooled and solidified in the molding space, problems such as lack of material or holes are generated on the micro-component, and the gas remaining in the molding space Gas also causes whitening on the micro-component after curing, which not only causes production yield Low, and also affect product quality, so the existing injection molding process can not meet the needs of product miniaturization.

Therefore, how to provide an injection molding process capable of improving production yield, improving product quality, and satisfying product miniaturization requirements is the technical means and object for which the present invention is to be solved.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a micro component and a molding method thereof, and more particularly to a micro component capable of improving production yield and meeting miniaturization requirements and a molding method thereof.

In order to achieve the above object, the present invention has first proposed a method of molding a micro-component for mounting on a casing including a preforming step and a cutting step. The pre-forming step: providing a mold having at least one molding space, injecting a liquid material into the molding space, and solidifying the liquid material in the molding space to form a pre-finished product, and the pre-finished product 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 to clamp the preform with the pair of positioning members, so that the finished product region is positioned at the pair of positioning members And cutting the pre-finished product along the circumference of the positioning member by using the pair of cutting members to cut the finished product region and the blanking region, so that the finished product region is formed into a sheet shape and the periphery has all cross sections. The micro-component is provided on the side edge of the micro-component, and the cut-off surface is formed with a cut mark.

In an embodiment, 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.

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

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

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

In an embodiment, the first mold base further includes a first accommodating groove pair surrounding the first positioning portion, and the second mold base further includes a second locating member. a second receiving groove adjacent to the first receiving groove.

In an embodiment, the pair of cutting members further includes a first cutting member disposed in the first receiving groove and a second cutting member disposed in the second receiving groove, 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 comprising a first surface, a second surface and all cross sections. The first surface is opposite the second surface. The cut surface ring is disposed on a circumference of the first surface and the second surface, and is configured to respectively connect the first surface and the second surface, and the cut surface is formed on the first surface and the first surface A cut mark between the two surfaces.

In an embodiment, the cut mark is further perpendicular to the first surface and the second surface.

The micro-component of the present invention and the molding method thereof have the following characteristics compared with the prior art Advantages: After the finished product region including the finished product region and the blanking region is formed in the mold in advance, and then the finished product region and the blanking region are cut to form the micro component, the micro component can be improved. The problem of lack of material or hole in the micro-components directly formed in the mold can increase the production yield and meet the demand for miniaturization.

10‧‧‧Mold

11‧‧‧Molding space

111‧‧‧First gap

112‧‧‧Second gap

12‧‧‧ first mold base

13‧‧‧Second mold base

14‧‧‧ flow path

15‧‧‧First accommodating slot

16‧‧‧Second accommodating slot

20‧‧‧Pre-finished products

21‧‧‧ finished product area

22‧‧‧Unloading area

30‧‧‧ Positioning parts

31‧‧‧First positioning piece

32‧‧‧Second positioning parts

40‧‧‧Cut parts

41‧‧‧First cut piece

42‧‧‧Second cut pieces

50‧‧‧Micro Parts

51‧‧‧ first surface

52‧‧‧ second surface

53‧‧‧ cut face

60‧‧‧First actuating rod

61‧‧‧First damping unit

70‧‧‧Second actuating rod

71‧‧‧second damping unit

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

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

Figure 3 is a schematic cross-sectional view of a preform provided in the present invention.

Fig. 4 is an exploded perspective view showing a pre-finished product provided in the present invention.

FIG. 5 is a schematic exploded view of a pre-finished product provided in the present invention after cutting.

Figure 6 is a perspective view of a micro component provided in the present invention.

Figure 7 is a schematic cross-sectional view showing the cutting tool cut in the mold in the present invention.

The detailed description and technical contents of the present invention will now be described with reference to the following drawings: As shown in FIGS. 1 to 5, a molding method of a micro-component according to the present invention includes a pre-forming step and a cutting step.

Specifically, the pre-forming step is mainly to first provide 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 each other and mutually Combining and forming the second mold base 13 of the molding space 11, and then one A liquid material (not shown in the drawing) is injected into the molding space 11 through the first-stage passage 14 on the mold 10, and the liquid material is filled in the molding space 11, and then the liquid material is solidified in the molding space 11. Thereafter, a preform 20 is formed as shown in FIG. The preform 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 being greater 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 may be made of other thermoplastic liquid materials in practical use.

The cutting step then provides at least one pair of positioning members 30 and at least one pair of cutting members 40 that surround the periphery of the positioning member 30, as shown in FIG. The pair of positioning members 30 are used to clamp the preform 20 so that the finished product region 21 is positioned between the pair of positioning members 30, and the blanking region 22 is exposed on the outer side of 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 to be respectively clamped by the first positioning member 31 and the second positioning member 32.掣 is on the corresponding side of the finished product area 21. Then, the pair of cutting members 40 are used to cut the blanking region 22 exposed outside the pair of positioning members 30 along the circumference of the positioning member 30, so that the blanking region 22 and the finished region 21 are It 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 second positioning member 32 and opposite to the first cutting member 41. 42. When the cutting member 42 performs the cutting work, the first cutting member 41 and the second cutting member 42 are respectively disposed on two sides of the blanking region 22, and then the pair is The cutting member 40 is displaced in the opposite direction of the pair of positioning members 30 in an axial direction, and the finished product region 21 and the blanking region 22 are cut by the displacement between the positioning member 30 and the pair of cutting members 40. The first positioning member 31 is separated from the second positioning member 32 to obtain a micro component 50.

As shown in FIGS. 4 to 6, the micro-member 50 obtained by the above-described molding method has a sheet shape and has a first surface 51, a second surface 52, and a cross section 53. The first surface 51 is opposite to the second surface 52. The cut surface 53 is formed by disconnecting the finished product area 21 and the blanking area 22 by the pair of cutting tools 40, and the ring is disposed on the The first surface 51 and the periphery of the second surface 52 are respectively connected to the first surface 51 and the second surface 52 to form an outer contour of the micro component 50. It is to be noted that since the cut surface 53 is formed by cutting the finished product region 21 and the blanking region 22 by the pair of cutting tools 40, a vertical portion is formed on the cut surface 53. Cutting marks on the first surface 51 and the second surface 52.

Accordingly, the molding method of the micro-component provided in the present invention is mainly such that the molding region 21 and the blanking region 22 are formed in advance on the pre-finished product 20. In this way, when the preform 20 is injected into the molding space 11 by 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 the liquid material. In the molding space 11, even if the gas generated in the molding space 11 is not completely discharged, the material or the hole is not formed in the molding space 11, and the shortage or the hole is not formed in the molding space. In the molding region 21, it is formed in the blanking region 22, so that the molding region 21 does not cause a shortage of material or a hole. When the micro-component 50 is formed by the cutting step, a well-formed micro-component 50 can be obtained, thereby not only improving the quality of the micro-component 50, but also improving the production yield while satisfying the thin shape. Requirements.

Further, as shown in FIGS. 2, 4, and 7, in the present embodiment, the pair of positioning members 30 and the pair of cutting members 40 are mainly disposed in the mold 10. 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 the first mold base 12 has a circumference around the first positioning. The first volume around piece 31 The second mold base 13 has a second accommodating groove 16 surrounding the second locating member 32 and corresponding to the first accommodating groove 15 . The first cutting member 41 is disposed in the first accommodating groove 15 , and the second cutting member 42 is disposed in the second accommodating groove 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. The first cutting member 41 is connected to a first actuating lever 60 in the first receiving slot 15 , and a first surrounding movement is disposed between the first cutting member 41 and the first receiving slot 15 . a second damper unit 61 is disposed outside the rod 60, and the second cutting member 42 is coupled to a second actuating rod 70 in the second accommodating groove 16, and the second cutting member 42 and the second accommodating groove A second damping unit 71 is disposed between the first cutting member 41 and the second cutting member 42 so as to surround the first gap 111. The second gap 112. The molding space 11 is formed by 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 contour of the second gap 112 is the same as the contour of the blanking region 22.

In addition, in the 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 can also be independent components. Again, this is merely an embodiment of the invention.

According to this, when the liquid material enters the molding space 11 through the flow path 14, the liquid material gradually fills the molding space 11, and the liquid material located between the first gaps 111 is solidified to form the liquid material. The finished product area 21, the liquid material located between the second gaps 112, forms the blanking area 22 after being cured. Then, a linear displacement effect of the first actuating lever 60 and the second actuating lever 70 is utilized in the mold 10 to simultaneously drive the first cutting member 41 and the The second cutting member 42 moves along the axial direction of the first actuating lever 60 and the second actuating lever 70, thereby cutting the finished product region 21 and the blanking region 22, and finally the first die holder 12 is The second mold bases 13 are separated from each other, and as such, the molding of the micro-components 50 can be completed directly inside the mold 10.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the patent application of the present invention cannot be limited thereby. Any modification or variation made by a person familiar with the skill of the present invention in accordance with the spirit of the present invention shall be covered by the following patent application.

Claims (9)

A method for molding a micro component comprises the following steps: a pre-forming step: providing a mold having at least one molding space, injecting a liquid plastic material into the molding space, and allowing the liquid plastic material to be in the molding space Internally solidified to form a preform, and the preform has a finished product area and a blanking area extending from the finished product area; and a cutting step of providing at least one pair of positioning members and at least one pair surrounding the positioning member a peripheral cutting member for clamping the pre-finished product with the pair of positioning members, wherein the finished product region is positioned between the pair of positioning members, and the pair of cutting members are used to perform the pre-finished product along the circumference of the positioning member Cutting to cut the finished product area and the blanking area, so that the finished product area forms a micro-component having a sheet shape and a peripheral portion having a cross section, and the cut surface ring is disposed at a side edge of the micro-component, and the A cut mark is formed on the cut surface. The method of molding 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 of 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 of forming a micro-component according to claim 3, wherein the pair of positioning members further comprises a first positioning member located in the first mold base and a second positioning member located in the second mold base. The method of forming a micro-component according to claim 4, wherein the first positioning member is integrally formed with the first mold base, and the second positioning member and the second mold base are integrally formed. The method for molding a micro-component according to claim 4, wherein the first mold base further includes The second mold base further includes a second volume surrounding the second positioning member and opposite to the first receiving groove. The second mold base further includes a second receiving groove pair surrounding the first positioning portion. Set the slot. The method of forming a micro-component according to claim 6, wherein the pair of cutting members further comprises a first cutting member disposed in the first receiving groove and a second receiving groove disposed in the second receiving groove The second cutting member, and 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. A micro-component, in the form of a sheet, comprising: a first surface; a second surface opposite the first surface; and a cross section, the ring is disposed at a periphery of the first surface and the second surface, and The first surface and the second surface are respectively connected, and the cut surface is formed with a cut mark between the first surface and the second surface. The micro-assembly of claim 8, wherein the cut-off mark is further perpendicular to the first surface and the second surface.