CN219988334U - Plastic injection mold of injection molding machine - Google Patents

Abstract

The utility model provides a plastic injection mold of an injection molding machine, which comprises an injection lower mold, a mold shaving mechanism, an injection mold core and an injection upper mold, wherein the mold shaving mechanism is arranged on the injection lower mold; before the upper injection mold and the lower injection mold are combined, the mold shaving mechanism is in an ejection state, after the upper injection mold and the lower injection mold are combined, the mold shaving mechanism is in a shrinkage state under the weight of the upper injection mold, then plastic media are injected into the mold shaving mechanism, after the plastic media are molded, the upper injection mold and the lower injection mold are separated, the mold shaving mechanism ejects out, and molded plastic is pushed out, so that the purpose of demolding is realized.

Description

Plastic injection mold of injection molding machine

Technical Field

The utility model belongs to the technical field of injection molds, and particularly relates to a plastic injection mold of an injection molding machine.

Background

The injection molding is also called injection molding, and has the advantages of high production speed and high efficiency, automation of operation, various patterns, various shapes, large size, accurate product size, easy updating of products, and capability of forming products with complex shapes, and is suitable for the field of mass production, products with complex shapes and other forming processing. After the mold is formed, plastic is required to be subjected to demolding, and in order to improve the demolding effect, an ejection structure such as bulletin No. CN218399236U is arranged on the mold

According to the plastic injection mold of the injection molding machine, the plastic injection mold is subjected to demolding through an ejection structure (a spring, an ejector block and a positioning column), if the pressure of a mold cavity in the mold or the weight of plastic is not high, the ejector block cannot compress the spring, a plastic medium will be attached to the surface of the ejector block, the subsequent ejector block cannot play an ejection role, the difficulty of demolding is possibly increased, the demolding error rate is high, and the influence of external factors is easily caused.

Therefore, it is very necessary to invent a plastic injection mold of an injection molding machine.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a plastic injection mold of an injection molding machine, which comprises an injection lower mold, a mold shaving mechanism, an injection mold core and an injection upper mold, wherein the mold shaving mechanism is arranged on the injection lower mold;

the die shaving mechanism comprises a pressing substrate, a shaving corner plate, a limiting shrinkage rod, a storage cavity, a telescopic spring, a storage groove and a corner plate storage groove, wherein the corner plate is shaved at the inner angle positions of four included angles of the pressing substrate, the upper end of the limiting shrinkage rod is fixedly installed below four corners of the pressing substrate, the lower end of the limiting shrinkage rod slides to penetrate into the storage cavity and fixedly connected with the upper end of the telescopic spring, the lower end of the telescopic spring is fixedly installed at the bottom of the storage cavity, the storage cavity is arranged at the four corner positions of an injection lower die, the storage groove is formed in the upper surface of the injection lower die, and the corner plate storage groove is respectively formed in the inner angle positions of four included angles of the storage groove.

Preferably, the injection upper die comprises an upper die body, a circulating pipe orifice, an injection pipe orifice and a die cavity, wherein the circulating pipe orifice is fixedly installed on the upper die body and the injection lower die respectively, a cooling circulating cavity formed in the upper die body and the injection lower die is communicated with the circulating pipe orifice, the injection pipe orifice is fixedly installed above the upper die body, the injection pipe orifice is communicated with the die cavity formed in the upper die body, and the shape of the die cavity is the same as that of the injection die core.

Preferably, the pressing base plate is a rectangular plate frame, and the shape and the size of the pressing base plate are matched with the accommodating groove; the corner plate accommodating groove is matched with a shaving corner plate, the shaving corner plate is an L-shaped plate, and the shaving corner plate is attached to the lower portion of the injection molding mold core.

Preferably, the limit shrinkage rod is a T-shaped rod body, and the limit shrinkage rod is elastically installed in the storage cavity through a telescopic spring.

Compared with the prior art, the utility model has the following beneficial effects:

before the upper injection mold and the lower injection mold are combined, the mold shaving mechanism is in an ejection state, after the upper injection mold and the lower injection mold are combined, the mold shaving mechanism is in a shrinkage state under the weight of the upper injection mold, then plastic media are injected into the mold shaving mechanism, after the plastic media are molded, the upper injection mold and the lower injection mold are separated, the mold shaving mechanism ejects out, and molded plastic is pushed out, so that the purpose of demolding is realized.

Drawings

Fig. 1 is a schematic view of the assembled structure of the present utility model.

Fig. 2 is a schematic view of the partial cross-sectional structure of fig. 1 according to the present utility model.

Fig. 3 is a schematic side view of the structure of fig. 2 according to the present utility model.

In the figure:

the lower die 1, the die shaving mechanism 2, the pressing base plate 21, the shaving angle plate 22, the limit shrinkage rod 23, the accommodating cavity 24, the telescopic spring 25, the accommodating groove 26, the angle plate accommodating groove 27, the injection die core 3, the injection upper die 4, the upper die body 41, the circulating pipe orifice 42, the injection pipe orifice 43 and the die cavity 44 are molded.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution of the embodiments of the present utility model will be clearly and completely described below, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

In the description of the embodiments, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. 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. In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 3:

the utility model provides a plastic injection mold of an injection molding machine, which comprises an injection lower mold 1, a mold shaving mechanism 2, an injection mold core 3 and an injection upper mold 4, wherein the mold shaving mechanism 2 is arranged on the injection lower mold 1, the injection mold core 3 is fixedly arranged at the center above the injection lower mold 1, and the injection lower mold 1 and the injection upper mold 4 are matched.

The die shaving mechanism 2 comprises a pressing substrate 21, a shaving corner plate 22, a limit shrinkage rod 23, a storage cavity 24, a telescopic spring 25, a storage groove 26 and a corner plate storage groove 27, wherein the shaving corner plate 22 is fixedly installed at the inner angle positions of four included angles of the pressing substrate 21 respectively, the upper end of the limit shrinkage rod 23 is fixedly installed below four corners of the pressing substrate 21, the lower end of the limit shrinkage rod 23 slides into the storage cavity 24 and is fixedly connected with the upper end of the telescopic spring 25, the lower end of the telescopic spring 25 is fixedly installed at the bottom of the storage cavity 24, the storage cavity 24 is formed at the four corners of the injection lower die 1, the storage groove 26 is formed in the upper surface of the injection lower die 1, the corner plate storage groove 27 is formed at the inner angle positions of four included angles of the storage groove 26 respectively, the pressing substrate 21 is matched with the bottom of the injection upper die 4, a balancing weight can be additionally installed on the injection upper die 4, and after the pressing substrate 21 is pressed on the pressing substrate 21, the pressing substrate 21 and the shaving corner plate 22 can be matched into the storage groove 26 and the corner plate storage groove 27.

Embodiment one:

specifically, the upper injection mold 4 includes an upper mold body 41, a circulation nozzle 42, an injection nozzle 43 and a mold cavity 44, the circulation nozzle 42 is fixedly installed on the upper mold body 41 and the lower injection mold 1 respectively, a cooling circulation cavity formed inside the upper mold body 41 and the lower injection mold 1 is communicated with the circulation nozzle 42, the injection nozzle 43 is fixedly installed above the upper mold body 41, the injection nozzle 43 is communicated with the mold cavity 44 formed inside the upper mold body 41, the shape of the mold cavity 44 is the same as that of the injection mold core 3, the interval between the mold cavity 44 and the injection mold core 3 is a molding cavity of plastic media, one circulation nozzle 42 is communicated with an external cooling water pipe, the other circulation nozzle 42 is communicated with an exhaust water pipe, and cooling liquid enters the cooling circulation cavity through the cooling water pipe and one circulation nozzle 42 and is discharged through the other circulation nozzle 42, so that the plastic in the lower injection mold 1 and the upper injection mold 4 is cooled and molded.

Specifically, the pressing base plate 21 is a rectangular plate frame, and the shape and the size of the pressing base plate 21 are matched with those of the containing groove 26; the corner plate receiving groove 27 is matched with the shaving corner plate 22, the shaving corner plate 22 is an L-shaped plate, and the shaving corner plate 22 is attached below the injection molding mold core 3.

Specifically, the limiting and contracting rod 23 is a T-shaped rod body, and the limiting and contracting rod 23 is elastically installed in the accommodating cavity 24 through the telescopic spring 25.

Embodiment two:

the drawbacks or problems presented in the above background art are mainly solved by the structure of the mould shaving mechanism 2: when the injection molding is needed, the injection lower die 1 and the injection upper die 4 are combined together, in the process, the injection upper die 4 presses the pressing base plate 21 of the die shaving mechanism 2 through the self weight, the pressing base plate 21 compresses the telescopic springs 25 in the storage cavity 24 through the limit shrinkage rod 23, and drives the shaving corner plates 22 at four corners of the pressing base plate 21 to fall until the pressing base plate 21 and the shaving corner plates 22 enter the storage grooves 26 and 27 matched with the pressing base plate 21 and the shaving corner plates 22 are positioned at the four corners below the die cavity 44, after the injection lower die 1 and the injection upper die 4 are combined, the die cavity 44 of the injection upper die 4 completely wraps the die core 3, then the injection head is abutted with the injection pipe orifice 43, plastic media are injected into the forming cavity of plastic media between the die cavity 44 and the injection die core 3 through the injection pipe orifice 43, after the forming is finished, the upper die body 41 is separated from the injection lower die 1, the pressing base plate 21 is not in the weight of the corner plates 4, the pressing base plate 21 is gradually jacked up by the springs of the telescopic springs 25, and the purpose of lifting the corner plates 22 is achieved by the pressing the elastic springs of the telescopic springs 25, and the plastic materials are gradually jacked up, and the plastic 22 is positioned at the four corners below the shaving base plate is removed, and the purpose of the plastic is achieved.

By utilizing the technical scheme of the utility model or under the inspired by the technical scheme of the utility model, a similar technical scheme is designed by a person skilled in the art, so that the technical effects are achieved, and the technical scheme falls into the protection scope of the utility model.

Claims (4)

1. The plastic injection mold of the injection molding machine is characterized by comprising an injection molding lower mold (1), a mold shaving mechanism (2), an injection molding mold core (3) and an injection molding upper mold (4), wherein the mold shaving mechanism (2) is arranged on the injection molding lower mold (1), the injection molding mold core (3) is fixedly arranged at the center above the injection molding lower mold (1), and the injection molding lower mold (1) and the injection molding upper mold (4) are matched and matched together;

the die shaving mechanism (2) comprises a pressing substrate (21), a shaving corner plate (22), a limit shrinkage rod (23), a storage cavity (24), a telescopic spring (25), a storage groove (26) and a corner plate storage groove (27), wherein the inner angle positions of four included angles of the pressing substrate (21) are respectively and fixedly provided with the shaving corner plate (22), the upper end of the limit shrinkage rod (23) is fixedly arranged below four corners of the pressing substrate (21), the lower end of the limit shrinkage rod (23) is fixedly connected with the upper end of the telescopic spring (25) in a sliding penetrating mode, the lower end of the telescopic spring (25) is fixedly arranged at the bottom of the storage cavity (24), the storage cavity (24) is formed in the four corners of the injection lower die (1), the storage groove (26) is formed in the upper surface of the injection lower die (1), and the corner plate storage groove (27) is respectively formed in the inner angle positions of the four included angles of the storage groove (26).

2. The injection molding machine plastic injection mold of claim 1, wherein: the upper injection molding die (4) comprises an upper die body (41), a circulating pipe orifice (42), an injection molding pipe orifice (43) and a die cavity (44), wherein the circulating pipe orifice (42) is respectively and fixedly installed on the upper die body (41) and the injection molding lower die (1), a cooling circulating cavity formed in the upper die body (41) and the injection molding lower die (1) is communicated with the circulating pipe orifice (42), the injection molding pipe orifice (43) is fixedly installed above the upper die body (41), the injection molding pipe orifice (43) is communicated with a die cavity (44) formed in the upper die body (41), and the shape of the die cavity (44) is identical to that of the injection molding die core (3).

3. The injection molding machine plastic injection mold of claim 1, wherein: the pressing base plate (21) is a rectangular plate frame, and the shape and the size of the pressing base plate (21) are matched with those of the containing groove (26); the corner plate accommodating groove (27) is matched with the shaving corner plate (22), the shaving corner plate (22) is an L-shaped plate, and the shaving corner plate (22) is attached below the injection molding mold core (3).

4. The injection molding machine plastic injection mold of claim 1, wherein: the limiting shrinkage rod (23) is a T-shaped rod body, and the limiting shrinkage rod (23) is elastically installed in the accommodating cavity (24) through the telescopic spring (25).