WO2018120454A1

WO2018120454A1 - Injection mold having lifting function

Info

Publication number: WO2018120454A1
Application number: PCT/CN2017/077969
Authority: WO
Inventors: 邓云化
Original assignee: 深圳市博纳药包技术股份有限公司
Priority date: 2016-12-30
Filing date: 2017-03-24
Publication date: 2018-07-05
Also published as: CN106738658A

Abstract

An injection mold having a lifting function, comprising: nozzle components, the nozzle components allowing the introduction of a molten plastic raw material; plastic flow channels (41 and 42), the plastic flow channels (41 and 42) being provided corresponding to the nozzle components, the plastic flow channels (41 and 42) being provided at outlet extremities thereof with diving gates (51 and 52) for transporting the plastic material to the diving gates (51 and 52); nozzles (61 and 62), the nozzles (61 and 62) being provided corresponding to the diving gates (51 and 52) for ejecting the plastic raw material so as to form a plastic product; a lifting mechanism, the lifting mechanism being arranged below the plastic flow channels (41 and 42), and the lifting mechanism being capable of ejecting the plastic product from the plastic flow channels (41 and 42) when moving in the direction approaching the plastic flow channels (41 and 42). The injection mold facilitates product demolding, is capable of ejecting the plastic product, and ensures the integrity of the product.

Description

Injection mold with lifting function

Technical field

The invention relates to the technical field of moulds, in particular to an injection mould with a lifting function.

Background technique

With the development of the plastics manufacturing industry, people are increasingly demanding the performance and quality of plastic products. Hot runner technology is a major technological change in injection molds. The hot runner system keeps the plastic flowing to the gate in a molten state by heating or adiabatic the mold master system, thereby avoiding the formation of the casting system.

At present, the mold structure is prone to imbalance in the flow path, the product weight is even, the nozzle material is more, it is easy to cause waste, the product is difficult to remove the film, and the phenomenon of topping out is prone to occur, resulting in low product quality.

Summary of the invention

In order to solve at least the above technical problems, it is a primary object of the present invention to provide an injection mold having a jacking function.

In order to achieve the above object, a technical solution adopted by the present invention is to provide an injection mold having a lifting function, comprising:

a nozzle assembly for introducing molten plastic material;

a plastic flow channel, wherein the plastic flow channel is disposed corresponding to the nozzle assembly, and the outlet end of the plastic flow channel is provided with a diving gate for conveying the plastic material to the diving gate;

a nozzle corresponding to the diving gate for discharging the plastic material to form a plastic product;

The jacking mechanism is located below the plastic flow channel, and the plastic product is ejected from the plastic flow channel when the jacking mechanism moves toward the plastic flow path.

Preferably, the jacking mechanism comprises a first needle plate, a second needle plate, a ejector pin, an elastic member and a cylinder needle, and the first needle plate and the second needle plate are oppositely disposed, the ejector rod and the elastic member One end of the ejector abuts the first needle plate, the free end of the elastic member abuts the second needle plate, and one end of the cylinder pin is fixed in the first needle plate, and the stalk is fixed The needle extends into the plastic flow channel. When the mold is closed, the elastic member rebounds, presses the second needle plate, and retracts the cylinder needle through the ejector pin and the first needle plate; when the mold is opened, the elastic member recovers and deforms The second needle plate moves upward, and the needle is driven upward by the ejector pin and the first needle plate to push out the plastic product.

Preferably, the elastic member is a spring, the spring is sleeved on the jack, and one end of the spring is fixed on the jack.

Preferably, the number of the first needle plates is two, the number of the second needle plates is one, and the second needle plate is disposed below the first needle plate.

Preferably, the nozzle assembly comprises a main nozzle, a splitter plate and at least two sub-projectors, the splitter plate is disposed corresponding to the main nozzle, and the splitter plate is provided with the plastic material of the main nozzle divided into at least two parts. A fluid passageway is disposed corresponding to an outlet of the fluid passage to convey the plastic material in the fluid passage.

Preferably, the number of the sub-shots is two, respectively a first nozzle and a second nozzle;

The number of the plastic flow channels is two, which are respectively a first plastic flow channel and a second plastic flow channel, and an outlet of the first nozzle communicates with an inlet of the first plastic flow channel, and the second nozzle The outlet communicates with the inlet of the second plastic flow channel.

Preferably, the first nozzle is symmetrically disposed with the second nozzle.

Preferably, the outlet of the nozzle assembly is located in the middle of the plastic flow channel.

The technical solution of the invention comprises a nozzle assembly, a plastic flow channel, a nozzle and a jacking mechanism, and the molten plastic material can be introduced through the nozzle assembly and the plastic flow channel, and the molten rubber material can be stably stabilized in the hot runner without being reduced and retained. The fluidity of the original rubber material, the original rubber material can form a plastic product after passing through the nozzle; the jacking mechanism can move up and down, and when the jacking mechanism moves upward, the jacking mechanism pushes the plastic product upward to realize the plastic product. The second ejection makes it easy to remove the film from the plastic product, thus ensuring the integrity of the product.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and those skilled in the art can obtain other drawings according to the structures shown in the drawings without any creative work.

1 is a schematic structural view of an injection mold having a jacking function according to an embodiment of the present invention;

Figure 2 is a schematic structural view of a portion of Figure 1;

3 is a schematic structural view of the combination of the manifold, the plastic runner and the nozzle of FIG. 2;

Figure 4 is a schematic view showing the structure of the plastic ejection mechanism in Figure 1.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It is to be noted that the descriptions of the "first", "second" and the like in the present invention are for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.

Based on the current mold structure, the water flow imbalance is prone to occur, the product weight is evenly distributed, the nozzle material is more, which is easy to cause waste, the product is difficult to remove the film, and the phenomenon of topping out is prone to occur, resulting in a problem of low product quality. The invention proposes an injection mold with a lifting function, which aims to solve at least one of the above technical problems. For the specific structure, please refer to the following embodiments.

Referring to FIG. 1 to FIG. 4, in the embodiment of the present invention, the injection mold having a lifting function includes:

a nozzle assembly for introducing molten plastic material;

Plastic flow passages (41, 42), the plastic flow passages (41, 42) are disposed corresponding to the nozzle assembly, and the outlet end of the plastic flow passages (41, 42) is provided with a diving gate (51, 52) for conveying The plastic material is delivered to the diving gate (51, 52);

a nozzle (61, 62) corresponding to the diving gate (51, 52) for discharging the plastic material to form a plastic product;

The jacking mechanism is located below the plastic flow path (41, 42), and the plastic lifting product can be moved from the plastic flow path when the lifting mechanism moves in the direction of the plastic flow path (41, 42). , 42) in the top.

In this embodiment, after the device obtains the plastic product through the nozzle assembly, the plastic flow channel and the nozzle, the jacking mechanism is used to lift the molded plastic product, and the problem of swelling is not caused, and the product can be improved. Finished product yield. Specifically, when the mold is closed, the jacking mechanism is in a retracted state; when the mold is opened, the jacking mechanism is in a jacking state, and the plastic product can be pushed when the jacking mechanism moves, and the plastic product can be flowed from the plastic. The road (41, 42) is topped out to ensure product integrity.

In addition, in the embodiment, the nozzle assembly is used for introducing the plastic raw material in a molten state to realize hot runner feeding, and the use of the molten rubber material in the hot runner is not stabilized, and the fluidity of the original rubber material is retained, thus, It can avoid large injection pressure and easy to balance water, ensure the quality and weight of individual products, and improve the yield of products. The plastic flow channel (41, 42) can transport plastic raw materials. Since the above-mentioned nozzle assembly adopts hot runner feeding, the plastic raw material retains the original fluidity and plasticity, and can effectively shorten the original plastic flow channel (41, 42). .

Referring to FIG. 1 and FIG. 4, in a specific embodiment, the jacking mechanism includes a first needle plate 71, a second needle plate 72, a jack 90, an elastic member 80, and a cylinder pin 91. A needle plate 71 and a second needle plate 72 are oppositely disposed. The ejector pin 90 abuts against one end of the elastic member 80. One end of the ejector pin 90 abuts the first needle plate 71, and the free end of the elastic member 80 Abutting the second needle plate 72, one end of the cylinder needle 91 is fixed in the first needle plate 71, and the cylinder needle 91 extends into the plastic flow path, and when the mold is closed, the elastic member 80 rebounds, and the second The needle plate 72 is pressed down, and the cylinder needle 91 is retracted by the ejector rod 90 and the first needle plate 71; when the mold is opened, the elastic member 80 returns to deformation, and the second needle plate 72 moves upward through the ejector 90, A needle plate 71 drives the cylinder needle 91 to move upward to eject the plastic product.

In this embodiment, when the mold is closed, the elastic member 80 is rebounded, and the second needle plate 72 is pressed downward. The first needle plate 71 is driven downward by the ejector rod 90, and is driven to connect with the first needle plate 71. The cylinder needle 91 is retracted; when the mold is opened, the second needle plate 72 is pushed out against the tension of the elastic member 80, and the second needle plate 72 is moved upward by the plunger 90 to drive the needle connected to the second needle plate 72. The plate moves upwards, and the cylinder needle 91 is pushed out of the plastic product.

In some embodiments, the elastic member 80 is a spring, the spring is sleeved on the jack 90, and one end of the spring is fixed to the jack 90. It can be understood that the elastic member 80 is a spring or a spring assembly, and the elastic deformation of the spring or the spring assembly is used to achieve the up and down movement of the cylinder needle 91 to eject the plastic product.

In some embodiments, the number of the first needle plates 71 is two, the number of the second needle plates 72 is one, and the second needle plate 72 is disposed below the first needle plate 71. In this embodiment, four plastic products can be simultaneously produced through the first mold, which can greatly increase the production rate, compact structure and better production capacity.

Referring to FIG. 1 and FIG. 2, in a specific embodiment, the nozzle assembly includes a main nozzle 10, a splitter plate 20, and at least two sub-projectors. The splitter plate 20 is disposed corresponding to the main nozzle 10, and The manifold 20 is provided with a fluid passage for dividing the plastic material of the main nozzle 10 into at least two portions, and the sub-projecting nozzle is disposed corresponding to the outlet of the fluid passage to transport the plastic material in the fluid passage.

In this embodiment, the feeding port of the main nozzle 10 is arranged in a wide mouth shape to facilitate the introduction of the plastic material. A fluid passage is provided in the manifold 20 for conveying the plastic material. The fluid passage may have an inverted T shape or a straight shape. The fluid passage is connected with a plurality of sub-jects, and the plurality of sub-jects can split the plastic material.

In some embodiments, the number of the sub-shots is two, respectively a first nozzle 31 and a second nozzle 32;

There are two plastic flow passages (41, 42), which are a first plastic flow passage 41 and a second plastic flow passage 42, respectively, an outlet of the first injection nozzle 31 and an inlet of the first plastic flow passage 41. In the same manner, the outlet of the second nozzle 32 communicates with the inlet of the second plastic runner 42.

In this embodiment, the sub-shots are divided into a first nozzle 31 and a second nozzle 32. The first nozzle 31 and the second nozzle 32 respectively process the plastic material, and thus pass through the first nozzle 31 and the second. The nozzle 32 can separate two identical or different plastic materials to prepare a corresponding plastic product.

In some embodiments, the first nozzle 31 is symmetrically disposed with the second nozzle 32. In this embodiment, the first nozzle 31 and the second nozzle 32 can be symmetrically disposed. Thus, the volume of the plastic material passing through the first nozzle 31 and the second nozzle 32 is the same to ensure the uniform weight of each nozzle, and The stability of plastic products is consistent.

In some embodiments, the outlet of the nozzle assembly is located intermediate the plastic flow passages (41, 42). In order to further ensure that the weights of the respective nozzles are consistent and the stability of the plastic products is consistent, in the embodiment, the plastic material is selected to be introduced from the middle of the plastic flow channel (41, 42), so as to ensure the nozzles (61, 62). The consistency of the pressure.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structural transformation, or direct/indirect use, of the present invention and the contents of the drawings are used in the inventive concept of the present invention. It is included in the scope of the patent protection of the present invention in other related technical fields.

Claims

An injection mold having a lifting function, characterized in that the injection mold having a lifting function comprises:

a nozzle assembly for introducing molten plastic material;

a plastic flow channel, wherein the plastic flow channel is disposed corresponding to the nozzle assembly, and the outlet end of the plastic flow channel is provided with a diving gate for conveying the plastic material to the diving gate;

a nozzle corresponding to the diving gate for discharging the plastic material to form a plastic product;

The jacking mechanism is located below the plastic flow channel, and the plastic product is ejected from the plastic flow channel when the jacking mechanism moves toward the plastic flow path.
The injection mold having a jacking function according to claim 1, wherein the jacking mechanism comprises a first needle plate, a second needle plate, a jack, an elastic member and a cylinder needle, the first needle The plate and the second needle plate are oppositely disposed, the top rod abuts one end of the elastic member, one end of the top rod abuts the first needle plate, and the free end of the elastic member abuts the second needle plate, One end of the cylinder needle is fixed in the first needle plate, and the cylinder needle extends into the plastic flow channel. When the mold is closed, the elastic member rebounds, and the second needle plate is pressed down, and passes through the ejector pin and the first needle plate. The cylinder needle is retracted; when the mold is opened, the elastic member recovers and the second needle plate moves upward, and the ejector pin and the first needle plate drive the cylinder needle to move upward to push out the plastic product.
The injection mold having a jacking function according to claim 2, wherein the elastic member is a spring, the spring is sleeved on the jack, and one end of the spring is fixed to the jack.
The injection mold having a lifting function according to claim 2, wherein the number of the first needle plates is two, the number of the second needle plates is one, and the second needle plate is disposed at the first Below the needle plate.
The injection mold having a lifting function according to claim 1, wherein the nozzle assembly comprises a main nozzle, a splitter plate and at least two sub-projectors, wherein the shunt plate is disposed corresponding to the main nozzle, and is shunted. The plate is provided with a fluid passage for dividing the plastic material of the main nozzle into at least two parts, and the sub-jets are arranged corresponding to the outlet of the fluid passage to transport the plastic raw material in the fluid passage.
The injection mold having a lifting function according to claim 5, wherein the number of the sub-projectors is two, respectively a first nozzle and a second nozzle;

The number of the plastic flow channels is two, which are respectively a first plastic flow channel and a second plastic flow channel, and an outlet of the first nozzle communicates with an inlet of the first plastic flow channel, and the second nozzle The outlet communicates with the inlet of the second plastic flow channel.
The injection mold having a jacking function according to claim 6, wherein the first nozzle and the second nozzle are symmetrically disposed.
The injection mold having a jacking function according to claim 7, wherein the outlet of the nozzle assembly is located in the middle of the plastic flow path.