KR200280829Y1 - A metallic mold having removal inferiority preventive structure of molding goods - Google Patents

Abstract

The present invention is a mold apparatus equipped with a blowout prevention part of the injection molded product so that the product formed in the separation process of the upper and lower molds is not attached to the upper mold and is automatically positioned at a predetermined position to enable smooth take-out and prevent product defects. To provide a,

Accordingly, the mold apparatus having the ejection failure prevention part of the injection molding machine is coupled to one side of the injection molding machine and the upper mold 100 coupled to the upper plate 140 for forming the upper surface of the injection molding machine, and coupled to the other side of the injection molding machine to provide a lower surface of the injection molding machine. In the mold apparatus provided with a lower mold 200 to which the lower mold 240 to be molded is coupled, and an ejection apparatus 250 for removing the injection molded by the upper and lower mold plates, the upper mold 100 is provided on the upper mold 100. In the process of separating the upper and lower molds, the mill pin 310 which is penetrated forward and backward to be installed in the upper mold plate 140 so as to be pressurized to be positioned on the lower mold 200 side, and the rear of the mill pin 310. Is installed in the elastic member 320 is applied to the elastic force so that the downward pressing force is applied to the pin.

Description

Molding device equipped with a blowout prevention part of an injection molding {A METALLIC MOLD HAVING REMOVAL INFERIORITY PREVENTIVE STRUCTURE OF MOLDING GOODS}

The present invention relates to a mold apparatus provided with an injection ejection prevention part of the injection molding, and more particularly, the injection molding is not attached to the upper mold and is located on the lower mold side in a process of taking out the injection molded by the upper mold and the lower mold. The present invention relates to a mold apparatus provided with an ejection failure prevention part of an injection molding to enable ejection.

In general, an outer case is configured to install and protect the printed circuit board and the like in an electronic product or a wired / wireless communication device in which a device such as a printed circuit board is accommodated, and the outer case generally includes the printed circuit board. The base case is seated, and the cover case is configured to correspond to the base case, the base case and the cover case is usually configured to be fastened to each other by a screw coupling method, for this purpose the base case and the cover case Fastening holes for fastening are formed respectively.

For example, a typical mobile phone includes a liquid crystal display body having a liquid crystal display unit, a main body including an external input unit including a plurality of buttons, a printed circuit board, and a charging body having a built-in rechargeable battery. As a perspective view showing a base case, the base case 10 is drilled with a plurality of button installation holes in a state in which various devices for a mobile phone including a printed circuit board are installed on a front surface 12 (part of the back side in FIG. 1). The cover case (not shown) is coupled, and the rear side 14 is provided with a charging case (not shown) with a built-in charger.

In addition, a plurality of fastening holes 16 are formed in the base case 10 to be coupled to the cover case by a screwing method.

On the other hand, the base case 10 is manufactured by injection molding, the mold apparatus for this is the upper mold 100 and the lower mold coupled to one side and the other side of the injection machine (not shown) as shown in Figure 2 Composed of a mold 200, the upper mold 100 is coupled to one side of the injection molding machine and the upper fixing plate 110 is coupled to the raw material injection unit 112 in the center, and is coupled to the lower portion of the upper fixing plate 110 The upper fixing plate 120 and the upper plate to be coupled to the lower portion of the auxiliary fixing plate 120 and to form the upper surface of the injection molding (not limited to the base case described above, denoted by reference 10 below) in the central portion thereof ( 140 is coupled to the upper plate 130, the core pin (not shown) for forming the above-described fastening hole 16 is configured on the upper plate (130).

The lower mold 200 is fixed to the fixing plate 210 is coupled to the other side of the injection molding machine, and the top of the fixing plate 210 is installed at regular intervals by a stopper 220, and the bottom of the injection molding is formed in the center of the approximately The lower plate 240 is coupled to the lower plate 230 and the lower die plate 240 and the upper die plate 140, the molding of the injection is completed, the upper die, lower die (100, 200) is separated when the lower die plate An ejection apparatus 250 is configured to eject and remove the injection positioned on the 240.

The ejection device 250 is located in the bottom of the fixed plate 210 as shown in Figure 2, the plate driving unit 252 including a rod 252a configured to be moved forward and backward on the fixed plate 210, The upper and lower mills 254 and 256 are coupled to the upper part of the rod 252a of the plate driving part 252 so as to be movable up and down between the fixing plate 210 and the lower plate 230. A lower end is coupled between the plates 254 and 256, and the upper end penetrates the lower plate 230, and a plurality of eject pins 258 are installed to be positioned on the upper surface of the lower plate 240.

However, the ejection apparatus including an eject pin 258 is located in the lower mold 240 on the lower plate 230 is injection molded 10 in the process of separating the upper mold 100 and the lower mold 200 Although it is to be removed by the 250, the core pin or the like formed on the upper plate 140 to act as a restraining force on the injection, the injection molding 10 to be separated from the upper plate 140 is attached to the upper plate (140) Since the malfunction is moved along the mold 100, it is impossible to remove it by the ejector 250, so the product must be separated by manual labor and the core pin is inserted into the fastening hole 16 side in such a separation process. There was a problem that occurred.

In addition, when the ejection process of the injection molded injection molding 10 is set to be performed on the lower plate 240 side by the automation mechanism, the product to be taken out is located on the upper plate plate 140 side, thereby causing malfunction of the automation mechanism. In addition, there was a problem that can not perform a smooth automation process.

The present invention is to solve the above problems, the purpose is that the product formed in the separation process of the upper and lower molds are not attached to the upper mold automatically positioned in a fixed position is possible to take out smoothly and the defect of the product Another object of the present invention is to provide a mold apparatus having a ejection failure prevention part of the injection molded product.

In order to achieve the above object, the present invention provides a lower mold coupled to an upper mold coupled to one side of an injection molding machine, and an upper mold coupled to an upper surface of an injection molding machine, and a lower mold coupled to the other side of the injection molding machine to form a lower surface of the injection molding machine. In the mold apparatus is provided with an ejecting device for removing the injection molded by the upper, lower mold, the upper mold to the upper mold to press the injection to be positioned on the lower mold side in the process of separating the upper, lower mold It is characterized in that it comprises a mill pin which is penetrated forward and backward to be installed, and an elastic member installed at the rear of the mill pin to apply an elastic force so that downward pressing force is applied to the mill pin.

Preferably, the mil pin is installed to be movable in the mil pin installation hole formed on the upper plate, the pressure member installation hole is formed on the upper plate in communication with the mil pin installation hole so that the pressing piece is installed and the elastic force is applied to the upper surface of the pressing piece While the elastic member is installed, the set screw is installed on the upper portion of the pressure member installation hole so that the elastic member is not separated upward.

1 is a perspective view showing a base case of a general mobile phone body,

2 is a cross-sectional view showing a conventional mold apparatus,

Figure 3 is a schematic cross-sectional view showing a mold apparatus provided with a blowout prevention part of the injection molding according to a preferred embodiment of the present invention,

4 is a first enlarged exploded perspective view illustrating a portion A of FIG. 3;

5 is a second enlarged exploded perspective view showing part A of FIG. 3;

Figure 6a is a first use state for explaining the operation of the mold apparatus provided with the injection failure prevention portion in accordance with a preferred embodiment of the present invention,

Figure 6b is a second use state diagram for explaining the operation of the mold apparatus provided with the injection failure prevention portion in accordance with a preferred embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

100: mold, 110: fixing plate,

120: Auxiliary fixing plate, 130: Senate plate,

140: upper mold plate, 200: lower mold,

210: fixed plate, 220: stopper,

230: lower plate, 240: lower plate,

250: ejection device, 300: ejection failure prevention unit,

310: milpin, 320: elastic member,

330: mill pin installation hole, 340: pressure member installation hole,

350: pressing piece, 360: set screw.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 3 is a schematic cross-sectional view showing a mold apparatus having an injection ejection prevention part according to a preferred embodiment of the present invention, FIG. 4 is a first enlarged exploded perspective view showing part A of FIG. 3, and FIG. 5 is FIG. 3. 6A is a second enlarged exploded perspective view illustrating part A of FIG. 6A, and FIG. 6A is a first use state diagram for explaining an operation of a mold apparatus having a ejection failure prevention unit according to a preferred embodiment of the present invention, and FIG. 6B is a preferred view of the present invention. The second use state diagram for explaining the operation of the mold apparatus with the injection failure prevention portion according to the embodiment, the same parts as in the prior art will be described with the same reference numerals.

The mold apparatus provided with an injection ejection prevention part of the present invention has an upper mold 100 coupled to one side of an injection molding machine to form an upper surface of the injection molding, and a lower mold 200 coupled to the other side of the injection molding machine to form a lower surface of the injection molding. Comprised of, the injection molding to be removed by the ejection apparatus 250 in the state in which the molding is completed by the upper mold 100 and the lower mold 200 is located in the lower mold 200 to the upper mold 100 The ejection failure prevention part of the injection molding is configured on the upper mold 100 so as to prevent the removal of the injection molding as it is attached and positioned.

As shown in FIG. 3, the upper mold 100 includes an upper fixing plate 110 coupled to one side of an injection molding machine and having a raw material injection unit 112 coupled to a central portion thereof, and a lower portion of the upper fixing plate 110. The auxiliary fixing plate 120 is coupled to the lower plate of the auxiliary fixing plate 110 is coupled to the upper plate (130) is coupled to the upper plate (140) for forming the upper surface of the injection molding in the center of the upper plate ( On the 130, the upper and lower molds (100, 200) in the process of separating the ejection failure prevention part 300 for pushing the injection (10) is configured.

The ejection failure prevention unit 300 penetrates back and forth to the upper plate 140, and is installed in the mill pin 310, and is installed in the rear of the mill pin 310 to apply an elastic force so that the downward pressing force is applied to the mill pin It is possible if the elastic member 320 is configured, but preferably, the mill pin installation hole 330 formed on the upper plate 140 and the mill pin installation hole 330 as shown in FIGS. 3 and 4. It is inserted into the pressing pin installation hole 340 and the pressing member installation hole 340 formed on the upper plate 140 to communicate with the mill pin 310 is installed to move downward, the pin installation hole 330 An elastic member 320 installed in the pressing member 350 for pressing the upper surface of the mill pin 310 and the pressing member mounting hole 340 corresponding to the upper surface of the pressing piece 350 so that an elastic force is applied to the upper surface of the pressing piece 350. ), And the set screw 360 is fastened to the upper portion of the pressing member installation hole 340 so that the elastic member 320 is not separated upward. It consists hereinafter.

In addition, the mill pin 310 is composed of a moving part 312 having a substantially round bar shape, and a disk-shaped head 134 formed on the upper part of the moving part 132 and the lower part of the moving part 134. The protrusion 136 for forming the fastening hole 16 of the injection molding 10 is selectively formed, for example, as shown in FIG. 4, the injection molding at the same time as forming the fastening hole 16 of the injection molding 10. In the structure that pushes the fastening hole 16 side so as not to stick to the upper mold 100 side, a protrusion 316 is formed at the lower end of the mill pin 310, and the fastening hole of the injection molded product 10 is shown in FIG. Irrespective of (16), it is possible to omit a protrusion when pushing a specific part of the injection molding so that the injection molding does not stick to the upper mold 100 side.

The mill pin installation hole 330 into which the mill pin 310 is inserted has a first hole 332 in which the moving part 312 is located and a second hole 334 in which the head 314 of the mill pin 310 is located. The second hole portion 334 is formed to have an outer diameter larger than the inner diameter of the first hole portion 332 is configured to limit the movement distance of the head portion 314 downward of the mill pin 310 and at the same time the depth of the pin It is formed deeper by a certain dimension than the height of the head 314 so that the overall operating distance of the 310 is kept constant.

Meanwhile, the lower mold 200 configured to correspond to the upper mold 100 has a fixed plate 210 coupled to the other side of the injection molding machine, and is fixed by a plurality of stoppers 220 on the fixed plate 210. The lower plate 230, which is spaced apart at intervals and is coupled to the lower die plate 240 forming the bottom surface of the injection molded part at the center thereof, and the molding of the injection die is completed between the lower die plate 240 and the upper die plate 140. When the upper and lower molds 100 and 200 are separated, an ejecting apparatus 250 for ejecting and removing the injection molded parts positioned on the lower mold 240 is included.

As shown in FIG. 3, the ejection device includes a plate driving part 252 and a plate driving part 252 including a rod 252a which is positioned at the bottom of the fixed plate 210 and configured to move forward and backward on the fixed plate. A lower mill plate 256 coupled to an upper rod of the lower plate 256 so as to be movable up and down between the fixing plate 210 and the lower plate 230, and an upper mill plate 254 coupled to an upper portion of the lower mill plate 256. The upper and lower wheat plates are coupled to each other, and an upper end of the lower plate 230 penetrates the lower plate 240, and is installed to include an eject pin 258.

On the lower mold 200, a slide rod 282 for guiding the shanghai with the upper mold 100 is guided, a slide rod 284 for guiding the shanghai of the lower plate 230, and upper and lower mills. Slide bars 286 and 289 for guiding the shanghai of the plates 254 and 256 and guide holes into which the slide bars 282, 284, 286 and 289 are inserted are formed, and a tension spring 288 and a plurality of fixing bolts are not shown. Is done.

On the other hand, as described above is not limited to the ejection failure prevention portion of the injection molding the main components of the pin 310 and the elastic member 320 is not limited to the above-described structure is applicable to various modifications within the technical scope of the present invention It can be.

The operation of the present invention as described above is as follows.

3 and 6, the injection molding machine is operated to mold the injection molding 10 in the state where the upper mold 100 and the lower mold 200 described above are installed on one side and the other side of the injection machine, as shown in FIG. As described above, when the molding raw material is pressed from the raw material injection unit 112 and pressed, the injection molding 10 is formed in the shape formed on the upper and lower mold plates 140 and 240 on the upper and lower plates 130 and 230.

When the cooling process of the injection molding proceeds for a predetermined time (several seconds or less) after the molding operation, the injection molding machine is operated so that the upper mold 100 is separated from the lower mold 200, and thus, when the upper mold 100 is separated, the lower mold ( Eject apparatus 250 configured in 200 is operated to separate the injection molding from the lower mold (200).

Referring to this process in more detail, as shown in Figure 6a the upper mold plate 140 of the upper mold 140 is released from the lower mold 240 of the lower mold by the operation of the injection molding machine 310, the pressing piece 350 As the elastic member 320 contracted by the pressing force acting in this order is expanded, the elastic repulsive force acts again as the pressing piece 350 to push out the mill pin 310 and at the same time, the lower end of the mill pin 310 is injected. By pushing the injection molded product 10 is located on the lower die plate 240 is to prevent the malfunction that is attached to the upper die plate 140 is moved.

As described above, when the injection molding product 10 is positioned on the lower die plate 240 by the mill pin 310, the plate driving part 252 of the ejection apparatus 250 is operated by the driving signal of the injection machine as shown in FIG. 6B. When 252a is advanced, the upper and lower wheat plates 254 and 256 positioned at the front end of the rod are advanced and interlocked with the eject pin 258 to separate the injection molding from the lower plate 240.

According to the mold apparatus provided with the ejection failure prevention part of the injection molding according to the present invention as described above, in the process of separating the upper mold and the lower mold, the elastic repulsive force of the elastic member acts on the mill pin when the upper mold plate is separated from the lower mold plate. Since it is pushed to the lower plate side, the injection molding is not attached to the upper plate side at all, thus eliminating the problem of mold injection or manual separation of the injection, and thus preventing injection defects in advance. Since the molded injection molding is always located at the ejection position of the lower mold, the ejection operation is stabilized by the automation mechanism, and thus it is a very useful design that enables the smooth execution of the automation process.

Claims (3)

An upper mold coupled to one side of the injection molding machine and an upper mold coupled to the upper surface of the injection molding machine, a lower mold coupled to the other side of the injection molding machine to form the lower surface of the injection molding machine, and an injection molded product formed by the upper and lower mold plates. In the mold apparatus provided with the ejection device for removing the, The upper mold has a mill pin penetrating back and forth to the upper mold plate so as to press the injection molding to be positioned on the lower mold side in the process of separating the upper and lower molds, and the rear pin of the mill pin is provided with a downward pressing force on the mill pin. Mold apparatus provided with a failure prevention prevention part of the injection molding, characterized in that it comprises an elastic member for applying an elastic force to act. The method of claim 1, The milpin is installed to be movable in the milfin installation hole formed on the upper plate, the pressure member is installed on the upper plate to communicate with the milfin installation hole, the pressing member is installed and the elastic member is applied so that the elastic force is applied to the upper surface of the pressing piece On the other hand, the mold apparatus provided with the ejection failure prevention portion of the injection molding, characterized in that the set screw is installed on the upper portion of the pressure member installation hole so that the elastic member is not separated upward. The method according to claim 1 or 2, The mill pin is composed of a moving part having a substantially round bar shape, and a disk-shaped head formed on the upper part of the moving part, and a lower part of the moving part is selectively formed on the lower part of the moving part to form a fastening hole of the injection molding, and the mill pin is inserted. Milpin installation hole is composed of a first hole in which the moving part is located and a second hole in which the head of the mill pin is located, the second hole is formed to have an outer diameter larger than the inner diameter of the first hole is moved downward head At the same time the depth is limited to the mold device provided with a bad ejection prevention portion of the injection molding, characterized in that the depth is formed deeper by a certain dimension than the height of the head so that the overall working distance of the mill pin is kept constant.