TWM543764U - Structure of injection mold - Google Patents

Description

Injection molding die structure

This creation relates to an injection molding die structure, which mainly refers to a structure that can improve molding efficiency, quality and environmental protection.

Conventional rubber and silicone products are generally injection molded by a molding machine. The molding machine is provided with an upper mold and a lower mold, and a mold cavity is arranged between the upper and lower molds, and a heating device, a feed flow path, and upper and lower molds are arranged. After the mold is closed, the hot melt material can be introduced into the cavity by the injection flow passage, and the heating device heats the upper and lower molds to the working temperature to shape the rubber compound.

When the upper and lower molds are heated, the rubber in the injection flow passage is simultaneously heated and formed into waste materials. In order to improve the foregoing situation, the upper and lower molds are arranged to introduce cooling liquid to cool the injection flow passage. The cold runner can prevent the rubber in the injection flow channel from forming into waste during the molding process.

However, the aforementioned cold runners are provided in a set of upper and lower molds, and the cold runners cannot be used in two sets of molds, and have low molding efficiency and poor quality.

The purpose of this creation is to provide a two-layer mold with cold runner piping to enhance molding efficiency, quality and environmentally friendly construction.

The creation includes an upper mold base, a lower mold base, and a middle mold base. The upper mold base has at least one upper upper mold and at least one upper lower mold, and the upper upper mold and the lower mold have mold holes on opposite sides; The lower mold base has at least a lower layer upper mold and at least a lower layer lower mold, wherein the lower layer upper and lower molds have mold cavities on opposite sides; and the middle layer mold base is disposed at the center of the upper and lower mold bases, and has a runner mold, The sprue mold injection pipe corresponds to the upper and lower molds of the upper layer and the upper and lower mold positions respectively, and the upper and lower discharge pipes are respectively connected with the corresponding mold holes, and the sprue mold is set and the injection pipe is upper and lower. a rubber channel connected to the material pipe; and the runner mold is provided with a cold runner pipe, the cold runner pipe is connected with an external input liquid, and is distributed around the injection pipe, the rubber channel, the upper and lower discharge pipes, and Inside the template of the runner mold.

Further, the upper mold base comprises two upper upper and lower molds, the lower mold base comprises two lower upper and lower molds, and the middle mold base further comprises two heat insulation boards and two electric heating boards, the two heat insulation boards are respectively arranged on the watering On the upper and lower sides of the tunnel mold, the two electric heating plates are respectively disposed on the second heat insulation board and the lower side.

The creation means that the upper, middle and lower mold bases are arranged on the injection machine, and when the molding operation is performed, the cylinders of the injection machine are actuated to make the upper and lower molds of the upper and lower layers, and the upper and lower molds of the lower molds are closed, and the second electric heating plate can make the upper layer The upper and lower molds and the lower layer upper and lower molds reach the appropriate working temperature, and the heat insulation board prevents the heat energy of the electric heating board from being quickly transferred to the sprue mold, and the injection tool is fed and the rubber material is injected to the injection tube, and The rubber channel and the upper and lower discharge pipes are simultaneously injected into the upper and lower molds of the upper layer and the lower and upper molds, and the cold runner pipeline is introduced with water or other liquid during the molding operation, and the injection tube can be adjusted. The appropriate temperature of the rubber channel, the upper and lower discharge pipes and the runner mold can ensure that the rubber material not in the cavity will not be heated and formed into waste materials, so that the upper and lower mold bases can be provided by the same runner mold. Molding and preventing the rubber flowing through the upper and lower mold bases from heating and forming waste during the transfer process can improve the molding efficiency, quality and cost-saving environmental protection.

Referring to Figures 1 to 4, the creation includes an upper mold base 1, a lower mold base 2, and a middle mold base 3. The upper mold base 1 has two upper upper molds 11 and two upper lower molds 12, and the upper layer is The lower molds 11 and 12 have a cavity 13 on one side, and the lower mold base 2 has two lower upper molds 21 and two lower lower molds 22. The lower upper and lower molds 21 and 22 have mold holes 23 on opposite sides.

The middle mold base 3 is disposed at the center of the upper and lower mold bases 1, 2, and has a runner mold 31, two heat insulation boards 32, and two electric heating plates 33. The two heat insulation boards 32 are respectively disposed on the runner mold 31. On the side, the two electric heating plates 33 are respectively disposed on the upper and lower sides of the two heat insulating plates 32, and the two electric heating plates 33 can be respectively heated by the upper and lower mold bases 1, 2 to reach an appropriate working temperature.

The sprue die 31 has a central injection pipe 311 corresponding to the upper upper and lower dies 11 and 12 and the lower upper and lower dies 21 and 22, and is connected to the corresponding cavity 13 and 23, and the lower discharge pipes 312 and 313. And the rubber channel 314 connected to the injection pipe 311 and the upper and lower discharge pipes 312 and 313 is disposed in the runner mold 31, and the rubber output (not shown) output from the injection tool 4 can be passed through the injection pipe. 311, the rubber channel 314, the upper and lower discharge pipes 312, 313 are respectively injected into the mold holes 13, 23 of the upper and lower mold bases 1, 2; and the runner mold 31 is provided with the cold runner pipe 315, the cold The runner line 315 is connected to externally input water or other liquid, and is distributed in the appropriate positions in the template of the injection tube 311, the rubber channel 314, the upper and lower discharge pipes 312, 313 and the runner mold 31, and The temperature of the injection pipe 311, the rubber channel 314, the upper and lower discharge pipes 312, 313, and the runner die 31 are adjusted to a suitable temperature.

This embodiment is disposed around the corresponding injection tube 311 and the upper discharge tube 312; the corresponding lower discharge tube 313 is around; the corresponding upper portion of the runner mold 31; and the corresponding lower position of the corresponding runner mold 31 is respectively set. The outlet can be independently cycled from the first to the fourth cold runner pipelines 3151~3154. Figure 4 does not show the injection pipe, the upper and lower discharge pipes, the rubber channel, and can be used in conjunction with the molding action requirements. The cold runner pipes 3151~3154 respectively accommodate water of the same or different appropriate temperatures, and can respectively control the proper working temperature of the injection pipe 311, the upper and lower discharge pipes 312, 313, and the runner die 31 in the molding process.

The upper layer of the upper layer, the lower mold 11, 12, the lower upper and lower molds 21, 22, and the middle mold base 3 are disposed on the injection tool 4. When the molding operation is performed, the cylinder of the injection tool 4 is actuated to make the upper and lower molds of the upper layer. 11, 12, the second lower layer upper and lower molds 21, 22 are clamped, and the two electric heating plates 33 can make the upper upper and lower molds 11, 12 and the lower upper and lower molds 21, 22 reach an appropriate working temperature, and the heat insulation board 32 The heat energy of the hot plate 33 can be prevented from being quickly transferred to the runner mold 31.

The injection tool 4 is fed and the glue is injected to the injection pipe 311, and the upper upper and lower molds 11, 12 and the lower upper and lower molds 21 are simultaneously injected through the rubber passage 314 and the upper and lower discharge pipes 312 and 313. The mold holes 13 and 23 of the 22 are formed, and the first to fourth cold runner pipes 3151 to 3154 of the cold runner pipe 315 are introduced into water or other liquid during the molding operation, and the injection pipe 311 and the rubber compound can be precisely adjusted. The proper temperature of the channel 314, the upper and lower discharge pipes 312, 313, and the runner die 31 can ensure that the rubber materials not in the cavity 13 and 23 are not heated and formed into waste materials, so that the same runner mold 31 can be created. The upper and lower mold bases 1 and 2 are formed and the rubber flowing through the upper and lower mold bases 1 and 2 is prevented from being heated to form waste during the transfer process, which can improve the molding efficiency, quality and cost saving. .

Therefore, according to the above, the creation can have better molding efficiency, molding quality, and waste reduction efficiency, and the foregoing embodiment is an example of the creation, and is not a limitation of the creation, and the equivalent change according to the spirit of the creation should also be Belongs to the scope of this creation.

1‧‧‧Upper mold base

11‧‧‧Upper upper mold

12‧‧‧Upper dies

13‧‧‧ cavity

2‧‧‧lower mold base

21‧‧‧Under the upper mold

22‧‧‧Under the lower die

23‧‧‧ cavity

3‧‧‧ Middle mold base

31‧‧‧Sway mode

311‧‧‧ injection tube

312‧‧‧Upper discharge pipe

313‧‧‧Under discharge pipe

314‧‧‧Material channel

315‧‧‧Cold runner piping

3151~3154‧‧‧First~4 cold runner pipeline

32‧‧‧Insulation board

33‧‧‧Electric heating plate

4‧‧‧Injection equipment

Figure 1 is a schematic diagram of the mold of this creation.

Figure 2 is a schematic diagram of the creation of the injection machine.

Figure 3 is a schematic diagram of the channel molding compound channel of this creation.

Figure 4 is a schematic diagram of the runner mold cold runner pipe of this creation.

1‧‧‧Upper mold base

11‧‧‧Upper upper mold

12‧‧‧Upper dies

13‧‧‧ cavity

2‧‧‧lower mold base

21‧‧‧Under the upper mold

22‧‧‧Under the lower die

23‧‧‧ cavity

3‧‧‧ Middle mold base

32‧‧‧Insulation board

33‧‧‧Electric heating plate

Claims (4)

An injection molding die structure comprising: an upper die holder having at least one upper layer upper mold and at least one upper layer lower mold, wherein the upper layer upper and lower molds have mold cavities on opposite sides; the lower layer mold base has at least one lower layer upper mold At least one lower layer mold, the lower layer upper and lower molds have mold cavities on opposite sides; a middle layer mold base is disposed in the center of the upper and lower mold bases, has a sprue mold, and the sprue mold injection tube corresponds to the upper layer The upper and lower molds and the upper and lower mold positions respectively are arranged to communicate with the corresponding mold holes above and below the discharge pipe, and the rubber channel which is connected with the injection pipe and the upper and lower discharge pipes is arranged in the runner mold; The sprue mold is provided with a cold runner line that connects the external input liquid and is distributed in the template of the injection tube, the rubber channel, the upper and lower discharge pipes, and the runner mold. The injection molding die structure of claim 1, wherein the upper mold base comprises two upper upper and lower molds, and the lower mold base comprises two lower upper and lower molds. The injection molding die structure according to claim 1, wherein the middle mold base further comprises two heat insulation plates and two electric heating plates, wherein the two heat insulation plates are respectively disposed on the lower side of the runner mold, and the two electric heating plates respectively It is located on the second insulation board and on the lower side. The injection molding die structure according to claim 1, 2 or 3, wherein the corresponding injection pipe and the upper discharge pipe are around; the corresponding lower discharge pipe is around; the corresponding sputter die is inside; the corresponding sprue die The first to fourth cold runner pipes with inlet and outlet and independent circulation operations are respectively arranged at the lower position.