TWI401148B - Mold - Google Patents

Description

Mold

The present invention relates to a mold, and more particularly to an injection molding mold.

In recent years, with the rapid development of multimedia technology, there is an increasing demand for optical components of electronic devices such as digital cameras, video cameras, and mobile phones with camera functions. Optical components are typically formed using injection molding dies. Injection molding molds are used to shape products, greatly increasing production efficiency, production, and cost. Robert D. TeKolste et al. revealed in the paper "Injection Molding of Binary Optical Elements" published in the 1995 SPIE System, Fabrication, and Applications of Precision Plastic Optics Proceedings. An injection molding technique for optical components.

Injection molding dies generally include moving stencils, stationary stencils, male dies, and master dies. During the molding process, the male mold and the female mold are closed to form a cavity, and the injection molding machine injects the molten material into the mold through the nozzle, and the molten material is passed through the pouring system (usually including the main flow path, the split flow path and the gate flow path). Enter the cavity to shape the product. When two or more different products are formed on the same injection molding die, a rotor disposed directly opposite to the main flow path is usually assembled on the male mold, and the rotor is provided with only one discharge opening, when forming a product, By rotating the rotor, the discharge port of the rotor is connected to the feed port of the cavity for molding the product through the branch passage, so that the molten material enters the cavity for molding the product, Mold the product.

However, in the prior art, the cooperation of the rotor and the male mold assembled on the male mold is difficult to precisely control. in case If the rotor is too tightly fitted with the male mold, the rotor is difficult to rotate, so that it is difficult to mold different products; if the rotor is not tightly coupled with the male mold, the robot picks up the material attached to the formed product to the product. During the removal process, the head is in contact with the rotor, so that the robot drives the rotor to rotate by the material head, thereby causing poor molding of the product.

In view of the above, it is necessary to provide a mold capable of making the rotor mounted on the male mold easy to rotate and avoiding poor molding of the product.

A mold for molding at least two structurally different components, comprising: a first template; a second template disposed opposite the first template, the second template being provided with a receiving portion; a rotor of the accommodating portion of the two templates, the top of the rotor is only provided with a feeding passage; when the mold is closed, the first template and the second template cooperate to form a first cavity and a second cavity, and a The first mold cavity and the second mold cavity are connected to each other, and the first mold cavity is used for molding a first component, and the second cavity is used for molding a second component; The bottom of the rotor is provided with a first mating portion, and the receiving portion of the second template is provided with a second mating portion, and the first mating portion of the rotor is engaged with the second mating portion of the second template to limit the rotor around the rotor The central axis rotates.

With respect to the prior art, the bottom of the rotor of the mold is provided with a first mating portion, and the receiving portion of the second template is provided with a second mating portion, and the first mating portion of the rotor is locked with the second mating portion of the second template. In order to limit the rotation of the rotor about its central axis, the robot is prevented from gripping the material head connected to the formed product to drive the rotor to rotate during the product removal process, thereby avoiding the formation of the product.

10‧‧‧Mold

12‧‧‧ first component

14‧‧‧second component

16,17‧‧‧ material head

100‧‧‧ first template

102‧‧‧mainstream

110‧‧‧ second template

112‧‧‧Second Matching Department

114‧‧‧ Groove

1142‧‧‧ bottom

120‧‧‧Rotor

122‧‧‧through hole

124‧‧‧Drainage channel

126‧‧‧First Matching Department

130‧‧‧Pole

140‧‧‧First cavity

150‧‧‧second cavity

160‧‧‧First Shunt

170‧‧‧Second runner

180‧‧‧ bolt

1 is a cross-sectional view of a mold provided by an embodiment of the present invention.

2 is a partial cross-sectional view of the second template of the mold shown in FIG. 1.

Figure 3 is a perspective view of the rotor of the mold shown in Figure 1.

Fig. 4 is a schematic view showing the working state of the mold shown in Fig. 1 when the first member is molded.

Figure 5 is a schematic view showing the working state of the mold shown in Figure 1 when the second component is formed.

The invention will now be further described in detail in conjunction with the drawings.

Referring to FIG. 1 , a mold 10 according to an embodiment of the present invention includes: a first template 100 , a second template 110 disposed opposite the first template 100 , and a rotor mounted on the second template 110 . 120, and a ejector pin 130 disposed on the rotor 120.

When the mold 10 is closed, the first template 100 and the second template 110 cooperate to form a first cavity 140 and a second cavity 150, and a first cavity 140 and a second cavity 150, respectively. The first shunt channel 160 and the second shunt channel 170 are connected to each other. The first mold cavity 140 is used to form a first component 12 (shown in Figure 4) that is used to form a second component 14 (shown in Figure 5).

The jack 130 is used for demolishing the runner head 16 (shown in FIG. 4) connected to the first component 12 or the runner head 17 connected to the second component 14 during demolding (as shown in the figure) 5)) to eject the first component 12 or the second component 14 out of the mold 10.

The first template 100 is provided with a main channel 102.

Referring to FIG. 2 , the second template 110 is provided with a recess 114 for receiving the rotor 120 . The bottom surface 1142 of the recess 114 is provided with two second mating portions 112 . In this embodiment, the second mating portion 112 is a protrusion extending from the bottom surface 1142 of the recess 114 along the axial direction of the recess 114. The shape of the cross section of the protrusion is a rectangle. It can be understood that the cross-sectional shape of the protrusion can also be other shapes, such as an arcuate shape or a triangular shape.

Referring to FIG. 3 , the rotor 120 is provided with a through hole 122 for receiving the jack 130 . A top of the rotor 120 is provided with a feed passage 124 communicating with the through hole 122. The bottom of the rotor 120 is provided with two first mating portions 126 corresponding to the two second mating portions 112 of the second template 110. The first mating portion 126 of the rotor 120 and the second mating portion 112 of the second template 110 are mutually locked to limit rotation of the rotor 120 about its central axis. In this embodiment, the first mating portion 126 is a groove.

Preferably, the rotor 120 is provided with two bolts 180. When the formed component is converted, the bolt 180 is screwed out to facilitate clamping, and an external force is applied to cause the bolt 180 to drive the rotor 120 away from the second template 110. The direction is moved such that the first mating portion 126 of the rotor 120 is disengaged from the second mating portion 112 of the second template 110 to rotate the rotor 120.

Referring to FIG. 4, when the mold 10 forms the first component 12, the feed passage 124 of the rotor 120 communicates the first splitter passage 160 with the main flow passage 102 of the first template 100 to make the molten material. The first mold cavity 140 is inserted into the first mold cavity 140 through the main flow path 102, the feed channel 124, and the first flow channel 160 to form the first component 12.

Referring to FIG. 5, when the mold 10 forms the second component 14, the feed passage 124 of the rotor 120 communicates the first splitter passage 170 with the main flow passage 102 of the first template 100 to make the molten material. The second mold cavity 150 is inserted into the second mold cavity 150 through the main flow path 102, the feed channel 124, and the second flow channel 170 to form the second component 14.

It can be understood that the first mating portion of the rotor 120 and the second mating portion of the second template 110 can also be configured such that the second mating portion of the second template 110 is a groove, and the first mating portion of the rotor 120 It is raised. The first mating portion of the rotor 120 is engaged with the second mating portion of the second template 110 to restrict rotation of the rotor 120 about its central axis.

Since the bottom of the rotor 120 of the mold 10 is provided with a first mating portion 126, the bottom surface 1142 of the recess 114 of the second template 110 is provided with a second mating portion 112, and the first mating portion 126 of the rotor 120 and the first portion The second mating portion 112 of the second template 110 is locked to restrict the rotation of the rotor 120 about its central axis, thereby preventing the robot from gripping the material head connected to the formed product to drive the rotor 120 during the product removal process. Rotate to avoid causing poor molding of the product. In addition, the first mating portion 126 of the rotor 120 is engaged with the second mating portion 112 of the second template 110 such that the feed passage 124 of the rotor 120 connects the first splitter passage 160 or the second split runner 170 with the The main flow path 102 is in communication to achieve precise positioning of the rotor 120.

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 it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

10‧‧‧Mold

100‧‧‧ first template

102‧‧‧mainstream

110‧‧‧ second template

112‧‧‧Second Matching Department

114‧‧‧ Groove

1142‧‧‧ bottom

120‧‧‧Rotor

122‧‧‧through hole

124‧‧‧Drainage channel

130‧‧‧Pole

140‧‧‧First cavity

150‧‧‧second cavity

160‧‧‧First Shunt

170‧‧‧Second runner

Claims (6)

A mold for molding at least two structurally different components, comprising: a first template; a second template disposed opposite the first template, the second template being provided with a receiving portion; a rotor of the accommodating portion of the two templates, the top of the rotor is only provided with a feeding passage; when the mold is closed, the first template and the second template cooperate to form a first cavity and a second cavity, and a The first mold cavity and the second mold cavity are connected to the first split flow channel and the second split flow channel, the first mold cavity is used for molding the first component, and the second cavity cavity is used for molding the second component; The bottom of the rotor is provided with a first mating portion, and the receiving portion of the second template is provided with a second mating portion, and the first mating portion of the rotor is engaged with the second mating portion of the second template to limit the rotor Rotating about its central axis; and the top of the rotor is provided with at least one bolt, when converting the formed component, unscrewing and clamping the bolt, and applying an external force to cause the bolt to move the rotor in a direction away from the second template To make the rotor to A first mating portion and the second template is at least a second mating portions disengaged, to rotate the rotor. The mold of claim 1, wherein the first mating portion is at least two grooves, and the second mating portion is at least one protrusion. The mold of claim 2, wherein the groove has a cross-sectional shape of a rectangle, an arc or a triangle. The mold of claim 1, wherein the first mating portion is at least one protrusion, and the second mating portion is at least two grooves. The mold of claim 4, wherein the protrusion has a rectangular shape, an arcuate shape or a triangular shape. The mold of claim 1, wherein the mold further comprises at least one ram, the rotor is provided with a through hole, the ejector is disposed through the through hole of the rotor, and the ejector is used for demoulding Will The molded component ejects the mold.