Plastic toy injection molding device

Abstract

The utility model discloses a plastic toy injection molding device, and relates to the technical field of injection molding devices, in particular to a plastic toy injection molding device, which comprises a base, an injection mold is arranged on the base and is used for forming a plastic toy, and the injection mold comprises a mold assembly, a lower mold, a first injection mold and a second injection mold, the upper mold is installed above the lower mold, the male mold core is installed in the lower end of the lower mold, the female mold core is installed in the upper end of the upper mold, and the exhaust groove is formed in one side in the female mold core; the exhaust assembly comprises an exhaust channel mounted at one end of the cavity insert; the exhaust pipeline is driven to move outwards by rotating the knob, and the exhaust pipeline drives the raised head on the chock plug to contract into the exhaust channel, so that gas in the male mold core and the female mold core enters the exhaust channel, enters the exhaust hole through the air outlet hole and then is exhausted outwards from the exhaust pipeline; therefore, the molten plastic is prevented from easily entering unexpected gaps due to high fluidity in the injection process.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding devices, in particular to a plastic toy injection molding device. Background Art

[0002] In the production of plastic toys, injection molding machines are usually used. Injection molding machines are also called high-speed injection molding machines or high-speed injection machines. They are the main molding equipment for making plastic products of various shapes from thermoplastics or thermosetting materials using plastic molding molds.

[0003] After checking the public (announcement) number: CN212072812U, a plastic toy injection molding device is disclosed. This technology discloses "a plastic toy injection molding device, including an upper mounting plate, a runner limiting ring is connected to the middle of the upper end surface of the upper mounting plate by screws, a runner is arranged in the middle of the runner limiting ring, the lower end surface of the upper mounting plate is connected to the upper convex groove mounting plate by screws, the left and right sides of the upper convex groove mounting plate are respectively connected to the hand pull ring A by threads, and the middle of the lower end surface of the upper convex groove mounting plate is fixed with an upper convex groove mold by screws. , outer guide columns are installed on the four corners below the upper convex groove mounting plate, eight inner guide columns are installed on the inner side below the upper convex groove mounting plate, a lower groove mounting plate is arranged below the upper convex groove mounting plate, and the left and right sides of the upper convex groove mounting plate are respectively connected to the hand pull ring B by threads" and other technical solutions, which have the technical effects of "avoiding the unexpelled gas inside the raw material affecting the quality of the product, the raw material is quickly cooled down and solidified, the solidification molding efficiency is high, the upper convex groove mold and the lower groove mold are accurately matched, and the quality of the product is improved";

[0004] The above solution directly exhausts the air through the exhaust hole and the exhaust channel. However, if the exhaust channel is improperly designed or operated, the molten plastic may overflow through the exhaust channel, thereby forming defects such as flash or burrs on the surface of the product, affecting the appearance quality of the product; and if the molten plastic is mixed with the gas and discharged together, it may cause waste of materials, which not only increases production costs, but also may pollute the environment. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a plastic toy injection molding device, which has the characteristic of preventing molten plastic from easily entering unexpected gaps due to its strong fluidity during the injection process through an exhaust component.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a plastic toy injection molding device, including a base, an injection mold is arranged on the base and is used for molding plastic toys, and the injection mold includes:

[0007] The mold assembly includes a lower mold fixed on the top of the base, an upper mold installed above the lower mold, a male mold core installed inside the lower end of the lower mold, a female mold core installed inside the upper end of the upper mold, and an exhaust groove opened on one side of the female mold core;

[0008] An exhaust assembly includes an exhaust channel installed at one end of the female mold core, one end of the exhaust channel is connected to the exhaust groove, an exhaust pipe threadedly installed inside the exhaust channel, a plug fixed at the end of the exhaust pipe, a plurality of circumferentially distributed exhaust holes opened on the outer wall of the plug, an exhaust hole opened in the center of the plug, and a knob fixed on the outer wall of the outer end of the exhaust pipe;

[0009] The cooling component includes a plurality of water channels opened inside the male mold core and the female mold core.

[0010] Preferably, the exhaust assembly further comprises a protrusion fixed to the end of the plug head and matched with the exhaust groove.

[0011] Preferably, a joint is provided at the outer end of the exhaust pipe, and a hose is connected via the joint.

[0012] Preferably, the cooling assembly further comprises a bent pipe fixed between adjacent ends of the water channels, a water inlet pipe being fixed at one end of the water channel, and a water outlet pipe being fixed at the other end.

[0013] Preferably, the mold assembly further comprises guide pillars fixed at the four corners of the bottom of the upper mold, guide sleeves fixed at the four corners of the top of the lower mold, and an injection port fixed at the middle of the upper end of the upper mold.

[0014] Preferably, the exhaust hole is connected to a plurality of air outlet holes.

[0015] Beneficial Effects

[0016] The utility model provides a plastic toy injection molding device. Compared with the prior art, it has the following beneficial effects:

[0017] (1) After the molten plastic is injected into the female mold core and the male mold core through the injection port, the exhaust pipe is driven to move outward by turning the knob, and the exhaust pipe drives the convex head on the plug to shrink to the inside of the exhaust channel, so that the gas in the male mold core and the female mold core enters the exhaust channel and enters the exhaust hole through the air outlet and is discharged from the exhaust pipe; thereby preventing the molten plastic from easily entering unexpected gaps due to its strong fluidity during the injection process.

[0018] (2) After the water enters through the water inlet pipe, it flows through the bend pipe in the waterway, absorbs and takes away the generated heat, lowers the temperature, and is then discharged from the water outlet pipe; thereby, the male and female mold cores are evenly cooled to ensure the quality and production efficiency of the plastic products. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a disassembled diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the male mold core and the female mold core in the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the female mold core in the utility model;

[0022] Figure 4 It is a cross-sectional view of the female mold core in the utility model;

[0023] Figure 5 For this utility model Figure 4 Schematic diagram of the structure of local A in the figure.

[0024] In the figure: 1, base; 2, injection mold; 21, mold assembly; 211, lower mold; 212, upper mold; 213, male mold core; 214, female mold core; 215, exhaust groove; 216, guide column; 217, guide sleeve; 218, injection port; 22, exhaust assembly; 221, exhaust channel; 222, exhaust pipe; 223, plug; 224, boss; 225, vent; 226, vent; 227, knob; 23, cooling assembly; 231, water channel; 232, elbow; 233, water inlet pipe; 234, water outlet pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 The utility model provides a technical solution for a plastic toy injection molding device: a plastic toy injection molding device, comprising a base 1, an injection mold 2 is arranged on the base 1 and is used for molding plastic toys, and the injection mold 2 comprises:

[0027] The mold assembly 21 includes a lower mold 211 fixed on the top of the base 1, an upper mold 212 installed above the lower mold 211, a male mold core 213 installed inside the lower end of the lower mold 211, a female mold core 214 installed inside the upper end of the upper mold 212, and an exhaust groove 215 opened on one side of the female mold core 214;

[0028] The exhaust assembly 22 includes an exhaust channel 221 installed at one end of the female mold core 214, and one end of the exhaust channel 221 is connected to the exhaust groove 215, an exhaust pipe 222 threadedly installed inside the exhaust channel 221, a plug 223 fixed at the end of the exhaust pipe 222, a plurality of circumferentially distributed exhaust holes 225 opened on the outer wall of the plug 223, an exhaust hole 226 opened in the center of the plug 223, and a knob 227 fixed on the outer wall of the outer end of the exhaust pipe 222;

[0029] The cooling assembly 23 includes a plurality of water channels 231 opened inside the male mold core 213 and inside the female mold core 214 .

[0030] In this embodiment, after the molten plastic is injected into the female mold core 214 and the male mold core 213 through the injection port 218, the exhaust pipe 222 is driven to move outward by turning the knob 227, and the exhaust pipe 222 drives the protrusion 224 on the plug 223 to shrink to the inside of the exhaust channel 221, so that the gas in the male mold core 213 and the female mold core 214 enters the exhaust channel 221, and enters the exhaust hole 226 through the air outlet 225 and is discharged outward from the exhaust pipe 222; thereby preventing the molten plastic from easily entering unexpected gaps due to its strong fluidity during the injection process.

[0031] Specifically, the exhaust assembly 22 further includes a protrusion 224 fixed to the end of the plug 223 and matched with the exhaust groove 215 .

[0032] In this embodiment, the protruding head 224 can fill the exhaust groove 215 to prevent the molten plastic from penetrating into the exhaust groove 215 .

[0033] Specifically, a joint is provided at the outer end of the exhaust pipe 222, and a hose is connected through the joint.

[0034] In this embodiment, the other end of the hose can be connected to a filtering device to filter the exhausted gas.

[0035] Specifically, the cooling assembly 23 further includes a bent pipe 232 fixed between the ends of adjacent water channels 231 , a water inlet pipe 233 is fixed at one end of the water channel 231 , and a water outlet pipe 234 is fixed at the other end.

[0036] In this embodiment, after the water flows in through the water inlet pipe 233, it flows in the water channel 231 through the curved pipe 232, absorbs and takes away the generated heat, reduces the temperature, and is then discharged from the water outlet pipe 234; thereby, the male mold core 213 and the female mold core 214 are evenly cooled to ensure the quality and production efficiency of the plastic products.

[0037] Specifically, the mold assembly 21 further includes guide pillars 216 fixed at the four corners of the bottom of the upper mold 212 , guide sleeves 217 fixed at the four corners of the top of the lower mold 211 , and an injection port 218 fixed at the middle of the upper end of the upper mold 212 .

[0038] In this embodiment, the guide pillar 216 cooperates with the guide sleeve 217 to ensure accurate alignment of the lower mold 211 and the upper mold 212 when the mold is closed, and to withstand a certain lateral pressure.

[0039] Specifically, the exhaust hole 226 is connected to a plurality of air outlet holes 225 .

[0040] In this embodiment, the gas entering each gas outlet hole 225 enters the gas outlet hole 226 .

[0041] The working principle and use process of the utility model are as follows: first, after the male mold core 213 on the lower mold 211 and the female mold core 214 on the upper mold 212 are molded together, the molten plastic is injected into the female mold core 214 and the male mold core 213 through the injection port 218, and then the exhaust pipe 222 is driven to move outward by turning the knob 227, and the exhaust pipe 222 drives the convex head 224 on the plug head 223 to shrink to the inside of the exhaust channel 221, so that the gas in the male mold core 213 and the female mold core 214 enters the exhaust channel 221, and enters the exhaust hole 226 through the exhaust hole 225 and is discharged outward from the exhaust pipe 222; thereby preventing the molten plastic from easily entering unexpected gaps due to its strong fluidity during the injection process.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic toy injection molding device, comprising a base (1), characterized in that: An injection mold (2) is arranged on the base (1) and is used for molding plastic toys. The injection mold (2) comprises: The mold assembly (21) comprises a lower mold (211) fixed on the top of the base (1), an upper mold (212) installed above the lower mold (211), a male mold core (213) installed inside the lower end of the lower mold (211), a female mold core (214) installed inside the upper end of the upper mold (212), and an exhaust groove (215) opened on one side of the female mold core (214); An exhaust assembly (22) comprises an exhaust channel (221) installed at one end of the female mold core (214), one end of the exhaust channel (221) being connected to the exhaust groove (215), an exhaust pipe (222) threadedly installed inside the exhaust channel (221), a plug (223) fixed at the end of the exhaust pipe (222), a plurality of circumferentially distributed exhaust holes (225) opened on the outer wall of the plug (223), an exhaust hole (226) opened in the center of the plug (223), and a knob (227) fixed on the outer wall of the outer end of the exhaust pipe (222); The cooling assembly (23) includes a plurality of water channels (231) opened inside the male mold core (213) and inside the female mold core (214).

2. A plastic toy injection molding device according to claim 1, characterized in that: The exhaust assembly (22) further comprises a protrusion (224) fixed to the end of the plug (223) and matched with the exhaust groove (215).

3. A plastic toy injection molding device according to claim 1, characterized in that: The outer end of the exhaust pipe (222) is provided with a joint, and a hose is connected via the joint.

4. A plastic toy injection molding device according to claim 1, characterized in that: The cooling assembly (23) further comprises a bent pipe (232) fixed between the ends of adjacent water channels (231); a water inlet pipe (233) is fixed at one end of the water channel (231), and a water outlet pipe (234) is fixed at the other end.

5. A plastic toy injection molding device according to claim 1, characterized in that: The mold assembly (21) further comprises guide pillars (216) fixed at the four corners of the bottom of the upper mold (212), guide sleeves (217) fixed at the four corners of the top of the lower mold (211), and an injection port (218) fixed at the middle of the upper end of the upper mold (212).

6. A plastic toy injection molding device according to claim 1, characterized in that: The exhaust hole (226) is connected to a plurality of exhaust holes (225).

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