CN218399319U

CN218399319U - Gas-assisted cooling demoulding structure

Info

Publication number: CN218399319U
Application number: CN202220655162.9U
Authority: CN
Inventors: 孙志勇; 郭秋生; 阳锡平
Original assignee: Huizhou Silver Baoshan New Technology Co ltd
Current assignee: Huizhou Silver Baoshan New Technology Co ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2023-01-31
Anticipated expiration: 2032-03-24

Abstract

The utility model discloses a gas-assisted cooling demoulding structure, including leaning on in proper order to fold the gluey mould that encloses into a die cavity of moulding plastics jointly, movable mould and mold core, set up the first gas runner that encircles the die cavity distribution of moulding plastics on the movable mould, set up two at least air vents on the first gas runner, and first gas runner is linked together with the die cavity of moulding plastics, set up oblique apical pore and the second gas runner of mutual intercommunication in the mold core, and oblique apical pore is linked together with the die cavity of moulding plastics, it is provided with oblique kicking block to slide in the apical pore to one side, oblique kicking block is used for blockking up oblique apical pore, therefore, set up first gas runner through moulding plastics the die cavity outside, set up the second gas runner in the mold core, when the die sinking, through first gas runner and the leading-in air conditioning of second gas runner toward the die cavity of moulding plastics, can accelerate the cooling rate of plastic spare, thereby make the lateral wall of plastic spare non-smooth structure can separate from the inside wall of the die cavity of moulding plastics rapidly, thereby realize the drawing of patterns, avoid the lateral wall of plastic spare non-smooth structure to be damaged by the friction.

Description

Gas-assisted cooling demoulding structure

Technical Field

The utility model relates to an injection mold field especially relates to a gas is assisted and is cooled off demoulding structure.

Background

Along with the higher and higher molding requirements of people on plastic parts, the design difficulty of the injection mold is correspondingly increased.

In the past, people's enthusiasm for the lateral wall of plastic part is smooth structure, and nowadays, the lateral wall is dull polish, loses unsmooth structure such as line and more extensively, to unsmooth structure, if directly pull out plastic part from the die cavity when the drawing of patterns, easily damage unsmooth structure, consequently often need use the line position structure to assist production. Specifically, the slide structure is the mold insert that can be for mold core lateral sliding, keeps away from the mold core through driving mold insert lateral sliding for let the mold insert keep away from the plastic part earlier before the die sinking, so, when the plastic part drawing of patterns, can avoid the mold insert to scrape the lateral wall of plastic part, in order to ensure that non-smooth structure is not damaged.

However, for a plastic part with a non-smooth outer sidewall, at least two insert pieces need to be arranged around the plastic part, when the outer sidewall of the plastic part has a plurality of side surfaces, the number of the insert pieces often needs to correspond to the number of the side surfaces of the plastic part, for example, a plastic part with a quadrangular prism shape needs to be correspondingly arranged around four insert pieces due to the existence of four side surfaces, which results in a sharp increase in difficulty of mold design, and the mold repair probability during the subsequent mold production is increased due to excessive row structure. The solution of the present application is particularly proposed based on the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing one and being used for replacing conventional line bit architecture, can effectively avoid the lateral wall of plastic part non-smooth structure to assist cooling demoulding structure by impaired gas when the drawing of patterns.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a gas-assisted cooling demoulding structure, includes in proper order by folding injection mould, movable mould and the mold core that enclose into a mould cavity of moulding plastics jointly:

the movable mould is provided with a first gas flow passage distributed around the injection mould cavity, the first gas flow passage is provided with at least two vent holes, and the first gas flow passage is communicated with the injection mould cavity;

the mold core is internally provided with an inclined top hole and a second gas flow channel which are mutually communicated, the inclined top hole is communicated with the injection molding cavity, an inclined top block is arranged in the inclined top hole in a sliding mode, and the inclined top block is used for blocking the inclined top hole.

In one embodiment, the movable mold is provided with a forming hole, the glue injection mold comprises a top plate and a forming boss, the forming boss is arranged on the top plate, and the top plate is stacked on the top surface of the movable mold so that the forming boss abuts against one end of the forming hole.

In one embodiment, the mold core comprises a bottom plate and a core column, the core column is arranged on the bottom plate, the bottom plate is stacked on the bottom surface of the movable mold, so that the core column is accommodated in the forming hole, and the surface of the core column, the inner side wall of the forming hole and the surface of the forming boss jointly enclose the injection molding cavity.

In one embodiment, the movable mold includes a movable plate and a mold core, the movable plate is provided with a mounting hole penetrating through the structure, the mold core is disposed in the mounting hole, and the forming hole is located in the mold core.

In one embodiment, the movable die further comprises an annular insert, the annular insert is arranged on the die core, an annular groove is formed in one side surface, close to the die core, of the annular insert, and the inner side wall of the annular groove and the surface of the die core jointly enclose the first gas flow passage.

In one embodiment, the annular insert is further provided with a sealing groove, the sealing groove is located on the outer side of the annular groove, and a sealing ring is arranged in the sealing groove.

In one embodiment, the second gas flow channel includes a transverse portion and a longitudinal portion, the transverse portion is located in the base plate, the longitudinal portion is located in the stem, and the transverse portion is in communication with the longitudinal portion.

In one embodiment, a plurality of flow dividing portions are respectively arranged on one ends of the longitudinal portions far away from the transverse portions.

In one embodiment, the inclined top holes are provided in plurality, and each inclined top hole is communicated with each flow dividing part in a one-to-one correspondence manner.

In one embodiment, the inclined ejecting blocks are arranged in a plurality, and each inclined ejecting block is slidably arranged in each inclined ejecting hole in a one-to-one correspondence manner.

Compared with the prior art, the utility model discloses at least, following advantage has:

the utility model discloses a gas-assisted cooling demoulding structure, including leaning on in proper order to fold the injection mould that encloses into a die cavity of moulding plastics jointly, movable mould and mold core, set up the first gas runner that encircles the die cavity distribution of moulding plastics on the movable mould, set up two at least air vents on the first gas runner, and first gas runner is linked together with the die cavity of moulding plastics, set up oblique apical pore and the second gas runner of mutual intercommunication in the mold core, and oblique apical pore is linked together with the die cavity of moulding plastics, it is provided with oblique kicking block to slide in the apical pore to one side, oblique kicking block is used for blockking up oblique apical pore, so, set up first gas runner through moulding plastics the die cavity outside, set up the second gas runner simultaneously in the mold core, when the die sinking, lead-in air conditioning toward the die cavity of moulding plastics through first gas runner and second gas runner, the cooling rate of plastic spare can accelerate, thereby make the lateral wall of plastic spare non-smooth structure can separate from the inside wall of the die cavity of moulding plastics rapidly, thereby realize the drawing of patterns, avoid the lateral wall of plastic spare non-smooth structure to be damaged by the friction.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic cross-sectional structure view of a gas-assisted cooling demolding structure according to an embodiment of the present invention;

FIG. 2 is a partially enlarged structural view of A of FIG. 1;

fig. 3 is a schematic structural view of a mold core and a slanting top block according to an embodiment of the present invention;

FIG. 4 is a schematic partial cross-sectional view of the gas-assisted cooling demolding structure shown in FIG. 1;

fig. 5 is a schematic structural view of a mold insert and an annular insert according to an embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of a stem and a lifter according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings.

Referring to fig. 1 to 3, a gas-assisted cooling and demolding structure 10 includes a glue injection mold 100, a movable mold 200 and a mold core 300, which are sequentially stacked to form an injection molding cavity 400, wherein the movable mold 200 is provided with a first gas flow channel 210 distributed around the injection molding cavity 400, the first gas flow channel 210 is provided with at least two vent holes 220, the first gas flow channel 210 is communicated with the injection molding cavity 400, the mold core 300 is provided with an inclined top hole 310 and a second gas flow channel 320, which are communicated with each other, the inclined top hole 310 is communicated with the injection molding cavity 400, an inclined top block 500 is slidably disposed in the inclined top hole 310, and the inclined top block 500 is used for blocking the inclined top hole 310.

It should be noted that when the injection mold 100, the movable mold 200 and the mold core 300 are sequentially stacked together, an injection mold cavity 400 for molding a plastic part is formed therein. Wherein the injection mold 100 can perform a movement toward or away from the movable mold 200, and the mold core 300 can also perform a movement toward or away from the movable mold 200. For example, the injection mold 100 or the mold core 300 can be moved toward or away from the movable mold 200 by passing guide rods through the injection mold 100, the movable mold 200, and the mold core 300. When the three was close to each other, the inside die cavity 400 that moulds plastics that forms will form inclosed cavity, when the three separates each other, will expose the die cavity 400 that moulds plastics to can take out the fashioned plastic part in the die cavity 400 that moulds plastics. Further, the movable mold 200 is provided with a first gas flow channel 210 distributed around the injection mold cavity 400, wherein the first gas flow channel 210 is provided with at least two vent holes 220, so that one vent hole 220 is used for ventilating the first gas flow channel 210, and the other vent hole 220 is used for guiding out the gas in the first gas flow channel 210, so that the gas in the first gas flow channel 210 can continuously flow. Further, the first gas flow path 210 communicates with the injection cavity 400, and therefore, the gas in the first gas flow path 210 can be surely introduced into the injection cavity 400. Further, an inclined top hole 310 and a second gas channel 320 which are communicated with each other are formed in the mold core 300, wherein the inclined top hole 310 is communicated with the injection molding cavity 400, an inclined top block 500 is slidably mounted in the inclined top hole 310, and when the inclined top block 500 slides in the inclined top hole 310 so that the top surface of the inclined top block 500 is flush with the top surface of the mold core 300, the inclined top block 500 blocks the inclined top hole 310, so that the second gas channel 320 is isolated from the injection molding cavity 400.

The principle of the above-described structure will be explained below. When the glue injection mold 100, the movable mold 200 and the mold core 300 are mutually abutted together, the internal injection mold cavity 400 is of a closed structure, then plastic is injected into the injection mold cavity 400, after cooling and forming, the glue injection mold 100 is separated from the movable mold 200, and then cold air is introduced into the vent hole 220, so that the cold air enters the injection mold cavity 400 through the first air flow channel 210, and the outer side wall of a plastic part is rapidly cooled and separated from the inner side wall of the injection mold cavity 400. Meanwhile, the inclined ejecting block 500 is ejected out, so that the second gas flow channel 320 is communicated with the injection molding cavity 400 through the inclined ejecting hole 310, cold air is introduced into the second gas flow channel 320, the inner side wall of the plastic part is rapidly cooled and separated from the inner side wall of the injection molding cavity 400, the inner side wall and the outer side wall of the plastic part are rapidly separated from the inner wall of the injection molding cavity 400, then the mold core 300 is separated from the movable mold 200, the mold core 300 can take the plastic part out of the movable mold 200, and successful demolding is realized. So, compare in the injection mold of conventional use capable bit architecture, through letting in air conditioning with the cooling of accelerating the plastic part for the plastic part can the quickly separating with the inner wall of the die cavity 400 of moulding plastics, thereby makes the plastic part can follow and takes out in the die cavity 400 of moulding plastics, can avoid the lateral wall of the non-smooth structure of plastic part to be damaged by the die cavity 400 friction of moulding plastics in taking out the in-process.

Referring to fig. 1 and 4, in an embodiment, a molding hole 230 is formed on the movable mold 200, the glue injection mold 100 includes a top plate 110 and a molding boss 120, the molding boss 120 is disposed on the top plate 110, and the top plate 110 is stacked on the top surface of the movable mold 200, so that the molding boss 120 abuts against one end of the molding hole 230.

By forming the molding hole 230 in an integral structure in the movable mold 200, when the glue injection mold 100 is stacked on the movable mold 200, the molding boss 120 abuts against one end of the molding hole 230, so that the molding boss 120 blocks the one end of the molding hole 230.

Further, referring to fig. 1 and fig. 3, the mold core 300 includes a bottom plate 330 and a core column 340, the core column 340 is disposed on the bottom plate 330, the bottom plate 330 is stacked on the bottom surface of the movable mold 200, so that the core column 340 is accommodated in the molding hole 230, and the surface of the core column 340, the inner sidewall of the molding hole 230, and the surface of the molding boss 120 jointly enclose an injection molding cavity 400.

It should be noted that the top surface and the ground surface of the movable mold 200 are two opposite end surfaces of the movable mold 200, the glue injection mold 100 is stacked on one end surface of the movable mold 200, and the mold core 300 is stacked on the other end surface of the movable mold 200. When the mold core 300 is stacked on the bottom surface of the movable mold 200, the core column 340 is accommodated in the forming hole 230, wherein a certain interval is provided between the outer sidewall of the core column 340 and the inner sidewall of the forming hole 230 as well as between the outer sidewall of the forming boss 120, so that the outer sidewall of the core column 340, the inner sidewall of the forming hole 230 and the surface of the forming boss 120 form a closed injection mold cavity 400 together. Thus, the plastic part formed in the injection mold cavity 400 is a shell structure. It should be noted that, with the gas-assisted cooling structure of the present society, the molding holes 230 can be integrated, so that no line clamping is generated on the outer side wall of the formed plastic part, thereby improving the injection molding quality of the plastic part. The line clamping refers to a line mark structure which is generated when the outer side wall of the plastic part is positioned at the splicing position of the two inserts when the two inserts are spliced to form the cavity.

Referring to fig. 1 and 4, in an embodiment, the movable mold 200 includes a movable plate 240 and a mold core 250, the movable plate 240 is provided with a mounting hole penetrating through the structure, the mold core 250 is disposed in the mounting hole, and the forming hole 230 is located in the mold core 250.

It should be noted that, the movable mold 200 is configured to have a structure in which the movable plate 240 and the mold core 250 are combined, so that the mold core 250 can be configured to have a small volume structure, which is beneficial to processing the forming hole 230 in the mold core 250, so as to improve the convenience of mold processing.

Referring to fig. 1, fig. 2 and fig. 5, in an embodiment, the movable mold 200 further includes an annular insert 260, the annular insert 260 is disposed on the mold core 250, an annular groove 261 is formed on a side surface of the annular insert 260 close to the mold core 250, and an inner sidewall of the annular groove 261 and a surface of the mold core 250 jointly enclose a first gas flow channel 210.

It should be noted that, since the first gas flow channel 210 is located inside the movable mold 200 and is disposed around the outside of the injection mold cavity 400, in order to improve the convenience of processing the mold, the first gas flow channel 210 is formed by stacking the annular insert 260 and the mold core 250.

Referring to fig. 1, fig. 2 and fig. 5, in an embodiment, the annular insert 260 further defines a sealing groove 262, the sealing groove 262 is located outside the annular groove 261, and a sealing ring is disposed in the sealing groove 262.

It should be noted that, in order to make the cold air in the first gas flow channel 210 smoothly enter the injection mold cavity 400 without flowing out to the outside, the sealing groove 262 is formed on the outside of the first gas flow channel 210, and the sealing ring is installed in the sealing groove 262, so that the sealing performance between the ring insert 260 and the mold core 250 can be improved, and the cold air is prevented from flowing out to the outside.

Referring to fig. 1, in an embodiment, the second gas flow channel 320 includes a transverse portion 321 and a longitudinal portion 322, the transverse portion 321 is located in the bottom plate 330, the longitudinal portion 322 is located in the stem 340, and the transverse portion 321 is in communication with the longitudinal portion 322.

It should be noted that the second gas flow channel 320 is formed by the transverse portion 321 and the longitudinal portion 322, wherein the transverse portion 321 is located in the bottom plate 330, and the longitudinal portion 322 is located in the stem 340, when the stem 340 and the bottom plate 330 are assembled together, the transverse portion 321 and the longitudinal portion 322 are connected to form the second gas flow channel 320, which is beneficial to processing the second gas flow channel 320.

Referring to fig. 6, in an embodiment, a plurality of shunting portions 323 are respectively disposed on ends of the longitudinal portion 322 away from the transverse portion 321. A plurality of the slanted ejecting holes 310 are formed, and the slanted ejecting holes 310 are communicated with the flow dividing portions 323 in a one-to-one correspondence. The inclined ejecting blocks 500 are provided in plurality, and the inclined ejecting blocks 500 are slidably arranged in the inclined ejecting holes 310 in a one-to-one correspondence manner.

It should be noted that, since the plurality of the slanted ejecting blocks 500 are provided to assist the ejection and the mold release according to the structure of the plastic part, in order to improve the inflow efficiency of the cold air, one flow splitting part 323 is provided in the slanted ejecting hole 310 corresponding to each slanted ejecting block 500 to achieve communication. Wherein each reposition of redundant personnel portion 323 all communicates with vertical portion 322, so, can improve the efficiency that air conditioning flowed into in the die cavity 400 of moulding plastics to improve the cooling rate of plastic part, make the inside and outside lateral wall of plastic part can realize quick separation with the die cavity 400 of moulding plastics, in order to improve drawing of patterns efficiency.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a gas is assisted and is cooled off demoulding structure, includes in proper order by folding injection mould, movable mould and the mold core that encloses into a die cavity of moulding plastics jointly, its characterized in that:

the movable mould is provided with a first gas flow channel distributed around the injection molding cavity, the first gas flow channel is provided with at least two vent holes, and the first gas flow channel is communicated with the injection molding cavity;

2. The gas-assisted cooling and demolding structure according to claim 1, wherein the movable mold is provided with a molding hole, the glue injection mold comprises a top plate and a molding boss, the molding boss is arranged on the top plate, and the top plate is stacked on the top surface of the movable mold so as to enable the molding boss to abut against one end of the molding hole.

3. The gas-assisted cooling and demolding structure according to claim 2, wherein the mold core comprises a bottom plate and a core column, the core column is arranged on the bottom plate, the bottom plate is stacked on the bottom surface of the movable mold so that the core column is accommodated in the forming hole, and further the surface of the core column, the inner side wall of the forming hole and the surface of the forming boss jointly enclose the injection molding cavity.

4. The gas-assisted cooling and demolding structure according to claim 2, wherein the movable mold comprises a movable plate and a mold core, the movable plate is provided with a mounting hole penetrating through the structure, the mold core is arranged in the mounting hole, and the forming hole is located in the mold core.

5. The gas-assisted cooling and demolding structure according to claim 4, wherein the movable mold further comprises an annular insert, the annular insert is arranged on the mold core, an annular groove is formed in one side surface, close to the mold core, of the annular insert, and the inner side wall of the annular groove and the surface of the mold core jointly enclose the first gas flow passage.

6. The gas-assisted cooling and demolding structure as claimed in claim 5, wherein the annular insert is further provided with a sealing groove, the sealing groove is located on the outer side of the annular groove, and a sealing ring is arranged in the sealing groove.

7. The gas-assisted cooling stripper structure of claim 3, wherein the second gas flow channel comprises a transverse portion and a longitudinal portion, the transverse portion being located in the base plate, the longitudinal portion being located in the stem, and the transverse portion being in communication with the longitudinal portion.

8. The gas-assisted cooling demolding structure as claimed in claim 7, wherein a plurality of flow dividing portions are respectively provided on ends of the longitudinal portions, which are away from the transverse portion.

9. The gas-assisted cooling demolding structure as claimed in claim 8, wherein the plurality of inclined top holes are formed, and each inclined top hole is communicated with each flow dividing portion in a one-to-one correspondence manner.

10. The gas-assisted cooling demolding structure according to claim 9, wherein a plurality of the lifter blocks are arranged, and each lifter block is slidably arranged in each lifter hole in a one-to-one correspondence manner.