WO2016161733A1

WO2016161733A1 - Stack mold

Info

Publication number: WO2016161733A1
Application number: PCT/CN2015/086505
Authority: WO
Inventors: 陈寒锐; 刘信
Original assignee: 广东伟达智能装备股份有限公司
Priority date: 2015-04-08
Filing date: 2015-08-10
Publication date: 2016-10-13
Also published as: CN104985757B; CN104985757A

Abstract

A stack mold in the present invention, having a fixing module, a movable module and a middle module, the middle module being arranged between the fixing module and the movable module, and the movable module and the middle module moving towards a direction being close to the fixing module until a first mold cavity is formed by the middle module and the fixing module and a second mold cavity is formed by the movable module and the middle module; the stack mold also comprises an injection molding runner; a main body central axis of a main runner of the injection molding runner is arranged in a central plane, being vertical to a direction of a movement axis of the movable module, of the middle module. In the present invention, materials enter an injection molding runner through a middle module and do not have to penetrate through a mold joint, thereby enabling pressure of each mold cavity to be more balanced; and meanwhile, the problem of seal leakage of the materials during mold opening is avoided.

Description

Laminated mold

Technical field

The invention relates to the field of injection molding equipment, and in particular to a laminated mold.

Background technique

The mold of the traditional horizontal injection molding machine has only one cavity, and only one layer of product can be produced each time the mold is opened and closed, and the production efficiency is low. To this end, people have designed "laminated molds". For example, CN203792627U and CN201346830Y all disclose laminated molds, which include a movable module, an intermediate module, a fixed module, an active module and an intermediate module arranged in order from front to back. A first layer of cavities is formed therebetween, and a second layer of cavities is formed between the intermediate module and the fixed module. The total feed inlet of the mold is usually placed on the fixed module, and the material is poured into each cavity by horizontal injection. Since the flow path of the existing laminating mold is complicated and long, the material injected from the total feeding port needs to pass through the parting surface and is evenly distributed between the two layers of cavities, causing the pressure imbalance of the front and rear cavities. In addition, since the material is injected from the module on the side of the mold, there is a problem that the material is sealed at the time of mold opening.

Summary of the invention

A brief summary of the invention is set forth below in order to provide a basic understanding of certain aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical aspects of the invention, and is not intended to limit the scope of the invention. Its purpose is to present some concepts in a simplified form as a pre-

The present invention provides a laminated mold comprising a fixed module, an active module, and an intermediate module, the intermediate module being disposed between the fixed module and the movable module, the movable module and the intermediate module being close to each other Moving the direction of the fixed module until the intermediate module and the fixed module form a first cavity, the movable module and the intermediate module form a second cavity; the laminated die further comprises an injection flow channel, the injection molding The main body axis of the main flow path of the flow path is disposed in a central plane of the intermediate module that is perpendicular to the moving axis direction of the movable module.

Further, the main feed port of the main flow channel of the injection flow channel has a bend of less than 90° with respect to the main body of the main flow channel.

Further, a main feed port of the injection flow channel is disposed at the top center of the intermediate module.

Further, a ratio of a speed at which the movable module moves relative to the fixed module to a speed at which the intermediate module moves relative to the fixed module is 2:1.

Further, the intermediate module is provided with a gear set, and the fixed module and the movable module are respectively provided with racks respectively matched with different gears in the gear set, so that the first cavity and the The second cavity is formed simultaneously.

Further, the injection flow channel includes: a main flow channel having a main feed port, a first main discharge port, and a second main discharge port; a first flow path having a first feed port and a first a second discharge port, the first feed port is connected to the first main discharge port; the second flow channel has a second feed port and a second discharge port, the second feed port Connecting the second main discharge port; the first discharge pipe is connected to the first discharge port to feed the first cavity; the second discharge pipe is connected to the second discharge port, to the Two cavity feeding.

Further, the first main discharge port and the second main discharge port have the same height.

Further, a heating device is disposed on the main flow path, the first flow path, the second flow path, and the outer wall of the discharge pipe.

At least one beneficial effect of the present invention is that the material enters the injection flow channel through the intermediate module without passing through the parting surface, so that the pressure of each cavity is more balanced, and at the same time, the problem of sealing leakage of the material during mold opening is avoided. The cavity structure of the invention is simple and efficient, the flow channel structure is simple, and the two cavity cavities can be fed at the same time, and the flow passages have the same structure, so the discharge amount of each discharge pipe is the same, and the two cavity cavities can be simultaneously formed. ,Improve work efficiency.

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 other drawings can be obtained from those skilled in the art without any creative work.

Figure 1 is a schematic structural view of a lamination mold of the present invention;

2 is a schematic structural view of a flow passage in a laminating mold of the present invention;

3 is a schematic structural view of a flow passage in a laminated mold according to another embodiment of the present invention;

4 is a schematic view showing the structure of a flow passage in a laminating mold according to still another embodiment of the present invention.

Reference mark:

1-fixed module; 2-active module; 3-intermediate module; 21-main flow channel; 211-main feed port; 212-first main discharge port; 221-first feed port; 222-first time Outlet; 23-first discharge pipe; 24-position ring.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. Elements and features described in one of the figures or one embodiment of the invention may be combined with elements and features illustrated in one or more other figures or embodiments. It should be noted that, for the sake of clarity, representations and descriptions of components and processes known to those of ordinary skill in the art that are not related to the present invention are omitted from the drawings and the description. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.

In the following embodiments of the present invention, the serial numbers and/or the order of the embodiments are merely for convenience of description, and do not represent the advantages and disadvantages of the embodiments. The descriptions of the various embodiments are all different, and the parts that are not detailed in a certain embodiment can be referred to the related description of other embodiments.

The invention discloses a laminating mold, as shown in FIG. 1, comprising a fixed module 1, an active module 2, and an intermediate module 3. The intermediate module is disposed between the fixed module and the movable module, and when the mold is closed, the active module and The intermediate module moves toward the fixed module until the intermediate module and the fixed module form a first cavity, the movable module and the intermediate module form a second cavity; it is understood that the first cavity and the second cavity are Formed at the same time.

In the intermediate module, an injection flow channel is further disposed. As shown in FIG. 2, the injection flow channel includes: a main flow channel 21 having a main feed port 211, a first main discharge port 212, and a second main discharge port; The first flow channel has a first feed port 221 and a first discharge port 222, the first feed The port is connected to the first main discharge port; the second flow channel has a second feed port and a second discharge port, and the second feed port is connected to the second main discharge port; the first discharge pipe 23 , connecting the first discharge port to feed the first cavity; the second discharge pipe is connected to the second discharge port to feed the second cavity; wherein, the positioning is provided outside the main inlet Ring 24. It should be understood that the structures of the first flow path and the second flow path are the same, so that the material flowing out of the main flow path flows into the first and second flow paths on average, thereby ensuring the first cavity and the second cavity. The amount of material obtained in the cavity is the same, so that the structure of the injection molding in the two cavities is the same. Of course, in order to ensure the same amount of material in each secondary flow path, the height of each main discharge port needs to be the same. In Figure 2, the label only writes the first main discharge port, the first feed port, the first discharge pipe, etc., and the corresponding second main discharge port, the second feed port, etc. are in the figure Symmetrical, so it is not marked.

Preferably, the main flow path of the injection flow channel is disposed in a plane of the intermediate module that is perpendicular to the direction of movement of the movable module. For example, when the injection molding machine is horizontally opened, the main flow path of the injection flow path may be disposed in a vertical plane of the intermediate module of the laminated mold.

The main feed port of the main flow channel may be arranged to have a bend of less than 90° with respect to the central axis of the main flow path body. For example, the main feed port can be placed at an angle of 60° to the center axis of the main channel body at the center of the top surface (see Figure 3). It is also possible to provide an angle of less than 90° in the center of the front, rear or bottom surface with the central axis of the main channel body. This facilitates connection with the nozzle of an external oblique injection molding machine for uniform injection.

When there is no bend (0°), the main channel extends straight to the outside opening in the center of the intermediate module. As shown in Figure 4.

In order to ensure that the first mold cavity and the second mold cavity can be simultaneously formed, the speed at which the intermediate module moves away from the fixed module is less than the speed at which the movable module moves away from the fixed module.

Preferably, the ratio of the displacement and speed of movement of the movable module away from the fixed module to the displacement and speed of movement of the intermediate module away from the fixed module is 2:1.

Preferably, the intermediate module is provided with a gear set, and the fixed module and the movable module are respectively provided with racks respectively matched with different gears in the gear set to make the first cavity and the second die The cavity is formed at the same time. It can be known that the speeds of the movable module and the intermediate module approaching the fixed module can be different through the gears of different specifications, so that the two mold cavities are simultaneously formed.

In an alternative embodiment, the nozzle of the injection molding machine faces the main feed port of the mold. The nozzle of the injection molding machine is a conical nozzle, a conical core is sleeved in the conical nozzle, and the conical core is spring Close the top of the conical nozzle; the cylinder of the injection molding machine brings the nozzle close to the main feed port, and the positioning ring outside the main feed port presses the conical core to make the conical core and the conical nozzle A void is formed and the feed is injected.

In order to prevent the material from solidifying before entering the cavity, heating means are arranged on the main channel, the secondary flow path and the outer wall of the discharge pipe.

At least one beneficial effect of the present invention is that the material enters the injection flow channel through the intermediate module without passing through the parting surface, so that the pressure of each cavity is more balanced, and at the same time, the problem of sealing leakage of the material during mold opening is avoided. The cavity structure of the invention is simple and efficient, the flow channel structure is simple, and the two cavity cavities can be fed at the same time, and the flow passages have the same structure, so the discharge amount of each discharge pipe is the same, and the two cavity cavities can be simultaneously formed. ,Improve work efficiency

It is to be understood that the present invention and its advantages are described in detail, and it is understood that various changes, substitutions and changes can be made without departing from the spirit and scope of the invention as defined by the appended claims. Transform. Further, the scope of the invention is not limited to the specific embodiments of the processes, devices, means, methods and steps described in the specification. It will be readily apparent to those skilled in the art from this disclosure that the present invention can be used in accordance with the present invention to perform substantially the same functions as the corresponding embodiments described herein or to obtain substantially the same results as the present and future Process, equipment, means, method or step to be developed. Therefore, the appended claims are intended to cover such a process, apparatus, means, methods or steps.

Claims

A laminated mold, characterized in that the laminated mold comprises:

a fixed module, an active module, and an intermediate module, the intermediate module being disposed between the fixed module and the movable module, wherein the movable module and the intermediate module move in a direction close to the fixed module until the The intermediate module and the fixed module form a first cavity, the movable module and the intermediate module form a second cavity;

The lamination mold further includes an injection flow path, and a main body axis of the main flow path of the injection flow path is disposed in a central plane of the intermediate module that is perpendicular to a direction of movement of the movable module.
The laminate mold according to claim 1, wherein the main feed port of the main flow path of the injection flow path has a bend of less than 90° with respect to a central axis of the main body of the main flow path.
The laminate mold according to claim 2, wherein the main feed port of the main flow path of the injection flow path has a 60° bend with respect to the main body of the main flow path.
A lamination mold according to claim 1 or 2, wherein a main feed opening of the injection flow path is provided at the center of the top of the intermediate module.
The laminated mold according to claim 1 or 2, wherein

The ratio of the speed at which the movable module moves relative to the fixed module to the speed at which the intermediate module moves relative to the fixed module is 2:1.
The laminated mold according to claim 1 or 2, wherein

a gear set is disposed on the intermediate module, and the fixed module and the movable module are respectively provided with racks respectively matched with different gears in the gear set to make the first cavity and the second The cavity is formed at the same time.
The laminated mold according to claim 1 or 2, wherein

The injection flow channel includes:

The main flow channel has a main feed port, a first main discharge port, and a second main discharge port;

The first flow channel has a first feed port and a first discharge port, and the first feed port communicates with the first main discharge port;

a second flow passage having a second feed port and a second discharge port, wherein the second feed port communicates with the second main discharge port;

a first discharge pipe connected to the first discharge port to feed the first cavity;

The second discharge pipe is connected to the second discharge port to feed the second cavity.
The laminated mold according to claim 7, wherein

The first main discharge opening is the same height as the second main discharge opening.
The laminated mold according to claim 7, wherein

A heating device is disposed on the main flow path, the first flow path, the second flow path, and the outer wall of the discharge pipe.