CN222096818U

CN222096818U - Injection mold convenient to plastic products cooling

Info

Publication number: CN222096818U
Application number: CN202420369122.7U
Authority: CN
Inventors: 王星
Original assignee: Jiangsu Huililong Plastic Industry Group Co ltd
Current assignee: Jiangsu Huililong Plastic Industry Group Co ltd
Priority date: 2024-02-28
Filing date: 2024-02-28
Publication date: 2024-12-03
Anticipated expiration: 2034-02-28

Abstract

The present application discloses an injection mold for facilitating cooling of plastic products. By respectively arranging matching annular bosses and annular grooves on the edges of an upper mold and a lower mold, and air inlet holes and air outlet grooves on the peripheral sides of the annular bosses, after the plastic product is molded and cooled in a molding cavity, the lower mold plate is first pulled for a distance to make the annular groove and the annular boss move relative to each other, and the annular boss and the annular groove are not completely separated, and the air inlet holes and the air outlet grooves on the annular boss are separated and exposed from the annular groove. At this time, the blower is started to convey the cooling airflow of the refrigeration fan through a connecting pipe to the cavity formed between the upper mold and the lower mold, so that the cooling airflow is blown to the surface of the plastic product and blown out from the air outlet groove, thereby cooling the surface of the plastic product, so that the plastic product is quickly molded and easier to demould, and the blowing and cooling process does not contact the outside world, thereby avoiding impurities from being contaminated on the surface of the plastic product.

Description

Injection mold convenient to plastic products cooling

Technical Field

The application relates to the technical field of injection molds, in particular to an injection mold convenient for cooling plastic products.

Background

The injection mold is a key tool for producing plastic products, and is a tool for injecting molten plastic materials into a mold cavity and then forming a required shape through cooling and solidification, the injection mold is generally divided into an upper mold component and a lower mold component, which can be rapidly opened and closed on an injection molding machine, main components of the injection mold comprise a mold shell, a mold cavity, a mold core, a runner system, a cooling system, a thimble, a bottom plate and the like, the injection mold is usually used by being installed on the injection molding machine for mold opening and closing, after the injection mold is opened, the surfaces of some molded plastic products are not completely cooled and are difficult to be demolded, blowing cooling is required, however, the plastic products after the mold opening are directly exposed to air, if the surfaces of the plastic products are directly blown to be cooled, impurities in workshop air can be blown to the surfaces of the plastic products, and the surfaces of the plastic products are polluted due to residual temperature in a short time after the surfaces of the plastic products after the mold opening.

Disclosure of utility model

Aiming at the defects in the prior art, the application aims to provide an injection mold convenient for cooling plastic products so as to solve the problems in the prior art.

According to one aspect of the application, the injection mold convenient for cooling plastic products comprises an upper mold, an upper mold core, a lower mold and a lower mold core, wherein the upper mold core is embedded in the middle of the bottom surface of the upper mold, the bottom surface of the upper mold is closely contacted with the top surface of the lower mold, the lower mold core is embedded in the middle of the top surface of the lower mold, the lower mold core is closely contacted with the edges of the upper mold core, the middle parts of the lower mold core and the upper mold core form a molding cavity, annular grooves are downwards formed at the peripheral edge positions of the top of the lower mold, the annular grooves are communicated with the peripheral sides of the lower mold, annular bosses downwards extend at the peripheral edge positions of the bottom of the upper mold and are flush with the peripheral sides of the upper mold, the annular bosses are in vertical correspondence with the annular grooves and are matched with the annular grooves, a plurality of air inlet holes are formed in the right and left sides of the annular bosses in a penetrating way along the width direction, annular grooves are downwards arranged at the peripheral edge positions of the top of the lower mold, annular grooves are fixedly provided with air inlet connectors, and the air inlet connectors are fixedly arranged at the peripheral edge positions of the bottom of the upper mold, the peripheral edge positions are fixedly connected with the air inlet connectors, and the air inlet connectors are fixedly arranged at the front of the air inlet connectors, and are connected with the air inlet connectors, and are fixedly arranged at the two sides of the air inlet connectors.

Preferably, the length and width dimensions of the air outlet through groove are smaller than the length and width dimensions of the annular groove.

Preferably, the upper die top surface is fixedly provided with an upper die plate, the two sides of the bottom surface of the lower die are fixedly provided with support side plates, the bottom surface of the support side plates is fixedly provided with a lower die plate, the center part of the lower die plate is penetrated and provided with an ejection through hole, the upper part of the lower die plate is provided with a first linkage plate, in an initial state, the first linkage plate is contacted with the lower die plate, the top surface of the first linkage plate is fixedly provided with a second linkage plate, the middle part of the top surface of the second linkage plate is fixedly connected with the lower ends of a plurality of ejector rods, the upper ends of the ejector rods sequentially slide from bottom to top to penetrate through the second linkage plate, the lower die is flush with the top surface of the lower die core, and a plurality of supporting springs are arranged between the top surface of the second linkage plate and the bottom surface of the lower die.

Preferably, the top surface of the second linkage plate and the bottom surface of the lower die are both provided with limiting grooves at the positions of the two ends of the supporting spring, the two ends of the supporting spring are arranged in the limiting grooves, and the supporting spring is in a compressed state.

Preferably, two sides of the first linkage plate and the second linkage plate are in sliding connection with opposite sides of the supporting side plates.

Preferably, the upper die plate, the upper die and the upper die core are provided with communicated injection molding channels in a penetrating mode, the injection molding channels on the upper die core are of conical structures, and the top of the upper die plate is provided with a sprue bush at the position of the injection molding channels.

Compared with the prior art, the injection mold has the advantages that the injection mold is convenient for cooling plastic products, after the plastic products are molded in the molding cavity and cooled by the cooling system of the injection mold, the injection mold is used for pulling the lower template of the injection mold arranged on the injection mold for a certain distance, the annular boss and the annular groove are not completely separated, the air inlet hole and the air outlet through groove on the annular boss are separated from the annular groove and are exposed, at the moment, the air blower is started to convey the cooling air flow of the refrigerating fan into the cavity formed between the upper mold and the lower mold through the connecting pipe, so that the cooling air flow is blown to the surface of the plastic products and blown out from the air outlet through grooves, the plastic products are rapidly molded, the air blowing process is easier to be demolded, and the air blowing process is not contacted with the outside, so that the impurities are prevented from being polluted on the surface of the plastic products.

Drawings

Fig. 1 is a perspective view of an injection mold for facilitating cooling of plastic articles according to an embodiment of the present application.

Fig. 2 is a perspective cross-sectional view of an injection mold for facilitating cooling of plastic articles according to an embodiment of the present application.

Fig. 3 is a front cross-sectional view of an air blowing cooling process of an injection mold for facilitating cooling of plastic products according to an embodiment of the present application.

Fig. 4 is a side cross-sectional view of an air blowing cooling process of an injection mold for facilitating cooling of plastic products according to an embodiment of the present application.

The plastic injection mold comprises the following components of a reference numeral 1, an upper mold, a2, an upper mold core, a 3, a lower mold, a 4, a lower mold core, a 5, a forming cavity, a 6, an annular groove, a 7, an annular boss, a 8, an air inlet hole, a 9, an air inlet joint, a 10, an air outlet through groove, a 11, a connecting pipe, a 12, a blower, a 13, a refrigerating blower, a 14, an upper mold plate, a 15, a supporting side plate, a 16, a lower mold plate, a 17, an ejection through hole, a 18, a first linkage plate, a 19, a second linkage plate, a 20, an ejector rod, a 21, an abutment spring, a 22, a limiting groove, a 23, an injection molding channel and a 24, and a sprue bush.

Detailed Description

In order to make the contents of the present application more clearly understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in fig. 3, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in figures 1-4, an injection mold convenient for cooling plastic products comprises an upper mold 1, an upper mold core 2, a lower mold 3 and a lower mold core 4, wherein an upper mold plate 14 is fixedly arranged on the top surface of the upper mold 1, the middle part of the bottom surface of the upper mold 1 is embedded with the upper mold core 2, the upper mold plate 14, The upper die 1 and the upper die core 2 are penetrated and provided with communicated injection molding channels 23, the injection molding channels 23 on the upper die core 2 are of conical structures, the demolding is convenient, a sprue bush 24 is arranged at the position of the injection molding channels 23 at the top of the upper die plate 14, the bottom surface of the upper die 1 is closely contacted and assembled with the top surface of the lower die 3, the middle part of the top surface of the lower die 3 is embedded with the lower die core 4, the lower die core 4 is closely contacted with the edge of the upper die core 2, the middle part of the lower die core 4 forms a forming cavity 5, the peripheral edge position of the top of the lower die 3 is downwards provided with an annular groove 6, the annular groove 6 is communicated with the peripheral side of the lower die 3, the peripheral edge position of the bottom of the upper die 1 is downwards extended and provided with an annular boss 7, the annular boss 7 is flush with the peripheral side of the upper die 1, the annular boss 7 corresponds up and down with the annular groove 6, and is matched with the annular groove 6, when the upper die 1 is tightly matched with the lower die 3, the annular boss 7 is tightly matched with the annular groove 6, a plurality of air inlets 8 are formed in the left side and the right side of the annular boss 7 in a penetrating manner along the width direction of the annular boss, air inlet connectors 9 are fixedly arranged at the outer ports of each air inlet 8, air outlet through grooves 10 are formed in the front side and the rear side of the annular boss 7 in a penetrating manner, the length and the width of each air outlet through groove 10 are smaller than those of the annular groove 6, the design can ensure that gaps are not generated when the annular boss 7 is tightly matched with the annular groove 6, each air inlet connector 9 is connected with a blower 12 through a connecting pipe 11, the blower 12 is connected with a refrigerating blower 13, the refrigerating blower 13 can provide cooling air flow, and the blower 12 can accelerate the cooling air flow to be conveyed into a cavity formed between the upper die 1 and the lower die 3; an upper die plate 14 is fixedly arranged on the top surface of the upper die 1, the two sides of the bottom surface of the lower die 3 are fixedly provided with supporting side plates 15, the bottom surface of the supporting side plates 15 is fixedly provided with a lower die plate 16, the center part of the lower die plate 16 is provided with an ejection through hole 17 in a penetrating mode, a first linkage plate 18 is arranged above the lower die plate 16, the top surface of the first linkage plate 18 is fixedly provided with a second linkage plate 19, two sides of the first linkage plate 18 and the second linkage plate 19 are in sliding connection with opposite side surfaces of the supporting side plates 15 on two sides, the middle part of the top surface of the second linkage plate 19 is fixedly connected with the lower ends of a plurality of ejector rods 20, the upper ends of the plurality of ejector rods 20 sequentially slide from bottom to top to penetrate through the second linkage plate 19, The lower die 3 and the lower die core 4 are flush with the top surface of the lower die core 4, a plurality of supporting springs 21 are arranged between the top surface of the second linkage plate 19 and the bottom surface of the lower die 3, specifically, limiting grooves 22 are formed in the positions of the two ends of the supporting springs 21 on the top surface of the second linkage plate 19 and the bottom surface of the lower die 3, the two ends of the supporting springs 21 are arranged in the limiting grooves 22, after the injection die is assembled, the supporting springs 21 are in a compressed state, so that the first linkage plate 18 is contacted with the lower die plate 16 under the elastic force of the supporting springs 21, in particular implementation, the assembled injection die is mounted on an injection machine, the lower die plate 16 is fixedly mounted on a moving part (a hydraulic cylinder or a screw rod) of the injection machine as a movable die, an ejection rod of an ejection part (a hydraulic cylinder) of the injection machine passes through an ejection through hole 17 of the lower die plate 16 to be in contact with the first linkage plate 18, the upper die plate 14 is fixedly mounted on the injection part of the injection machine as a fixed die, and an injection nozzle of the injection machine is aligned with a sprue bush 24.

In the above design, through the annular boss and the annular groove which are respectively arranged at the edges of the upper die 1 and the lower die 3 and the air inlet holes 8 arranged at the left side and the right side of the annular boss and the air outlet through grooves 10 arranged at the front side and the rear side of the annular boss, after the plastic product is molded in the molding cavity 5 and cooled by the cooling system of the die, the moving part of the injection molding machine pulls the lower template 16 of the injection molding die for a certain distance, so that the annular groove 6 on the lower die 3 and the annular boss 7 on the upper die 1 relatively move, the annular boss 7 and the annular groove 6 are incompletely separated, and the air inlet holes 8 and the air outlet through grooves 10 on the annular boss 7 are separated and exposed from the annular groove 6, at the moment, the air blower 12 is started to convey the cooling air flow of the refrigerating fan 13 into the cavity formed between the upper die 1 and the lower die 3 through the connecting pipe 11, so that the cooling air flow blows to the surface of the plastic product and is blown out from the air outlet through grooves 10, the cooling effect is further carried out on the surface of the plastic product, the plastic product is molded rapidly, the plastic product is easy to be demolded, the air is prevented from contacting the surface of the plastic product, and the air blowing process is prevented from being polluted on the surface of the plastic product.

When the injection molding machine is operated, when a plastic product is molded in the molding cavity 5 and cooled by a cooling system of the mold, the moving part of the injection molding machine pulls the lower template 16 of the injection molding machine by a certain distance, so that the annular groove 6 on the lower mold 3 and the annular boss 7 on the upper mold 1 relatively move, the annular boss 7 and the annular groove 6 are incompletely separated, the air inlet hole 8 and the air outlet through groove 10 on the annular boss 7 are separated from each other and exposed out, and at the moment, the cooling air flow of the cooling fan 13 is conveyed into a cavity formed between the upper mold 1 and the lower mold 3 through the connecting pipe 11, so that the cooling air flow blows to the surface of the plastic product and is blown out of the air outlet through groove 10, the surface of the plastic product is cooled, the annular groove 6 on the lower mold 3 is more easily pulled by the moving part of the injection molding machine, and the ejector plate 19 is further pulled by the ejector plate 18, and the ejector plate 19 is further pushed by the ejector plate 1 is further pushed by the ejector plate 18.

The above embodiments are only for illustrating the technical solution of the embodiments of the present application, and are not limited thereto. Although embodiments of the present application have been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents substituted for elements thereof without departing from the spirit and scope of the application as defined in the claims.

Claims

1. The utility model provides an injection mold convenient to plastic products cooling, includes last mould (1), goes up mould benevolence (2), bed die (3) and bed die benevolence (4), its characterized in that, go up mould (1) bottom surface middle part and have inlayed last mould benevolence (2), go up mould (1) bottom surface and bed die (3) top surface in close contact equipment, bed die (3) top surface middle part has inlayed bed die benevolence (4), bed die benevolence (4) with the marginal in close contact with of last mould benevolence (2) and both middle part form cavity (5), annular groove (6) have been seted up down in the peripheral edge position department at bed die (3) top, just annular groove (6) with the periphery side of bed die (3) bottom is linked together, the peripheral edge position department down extension of going up mould (1) bottom is equipped with annular boss (7), just annular boss (7) with the peripheral side looks of going up mould (1), just annular boss (7) and annular groove (6) up and down correspond and form into die cavity (6), the inlet port is down in the same direction as annular boss (7), the width is seted up in the same direction with annular boss (8) down, the both sides are closely run through in the mould (3), and every the outer port department of inlet port (8) is all fixed mounting and is equipped with air inlet joint (9), both sides all run through around annular boss (7) and have been seted up and give vent to anger logical groove (10), every air inlet joint (9) all are connected with air-blower (12) through connecting pipe (11), air-blower (12) are connected with refrigerating fan (13).

2. An injection mould for facilitating cooling of plastic products according to claim 1, characterized in that the length and width dimensions of the air outlet through groove (10) are smaller than the length and width dimensions of the annular groove (6).

3. The injection mold convenient for cooling plastic products according to claim 1, characterized in that an upper mold plate (14) is fixedly installed on the top surface of the upper mold (1), support side plates (15) are fixedly installed on two sides of the bottom surface of the lower mold (3), a lower mold plate (16) is fixedly installed on the bottom surface of the support side plates (15), an ejection through hole (17) is formed in the center portion of the lower mold plate (16) in a penetrating mode, a first linkage plate (18) is arranged above the lower mold plate (16), in an initial state, the first linkage plate (18) is in contact with the lower mold plate (16), a second linkage plate (19) is fixedly installed on the top surface of the first linkage plate (18), the middle of the top surface of the second linkage plate (19) is fixedly connected with the lower ends of a plurality of ejector rods (20), the upper ends of the ejector rods (20) sequentially slide from bottom to top to penetrate through the second linkage plate (19), the lower mold (3) and the lower mold insert (4) and the top surface of the lower mold insert (4), and a plurality of springs (21) are arranged between the second linkage plate and the bottom surface of the lower mold insert (4).

4. An injection mold for cooling plastic products according to claim 3, wherein the top surface of the second linkage plate (19) and the bottom surface of the lower mold (3) are provided with limit grooves (22) at two ends of the supporting spring (21), two ends of the supporting spring (21) are arranged in the limit grooves (22), and the supporting spring (21) is in a compressed state.

5. An injection mould for facilitating cooling of plastic products according to claim 3, characterized in that both sides of the first and second interlocking plates (18, 19) are slidingly connected with the opposite sides of the supporting side plate (15) on both sides.

6. An injection mold convenient for cooling plastic products according to claim 3, characterized in that, the upper mold plate (14), the upper mold (1) and the upper mold core (2) are provided with a communicated injection molding channel (23) in a penetrating way, the injection molding channel (23) on the upper mold core (2) is of a conical structure, and the top of the upper mold plate (14) is provided with a sprue bush (24) at the position of the injection molding channel (23).