Three-ejection structure of injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to a three-ejection structure of an injection mold. Comprising a base, a fixed plate, a movable plate and a push plate; a fixed plate, a movable plate and a push plate are sequentially arranged at the open end of the base, an elastic part is arranged between the fixed plate and the movable plate, the fixed plate is fixedly connected to the base, a top plate is installed in the base, a mold core is installed in the push plate, an ejector pin is installed on the top face of the top plate, and the other end of the ejector pin extends to the mold core. The three-ejection structure can effectively eject out and demould fan blades with small thicknesses, can ensure that the fan blades are not damaged by ejection, ensures the production quality of the fan blades, reduces the defective rate of products, and is high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a three-top structure of an injection mold. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding are fast production speed, high efficiency, automated operation, a wide variety of colors, shapes from simple to complex, sizes from large to small, and precise product size. The product is easy to update and can be made into complex-shaped parts. Injection molding is suitable for mass production and complex-shaped products and other molding and processing fields.

[0003] At present, in the injection molding process of fan blades, the injection molds used are very thin. If conventional one-time ejection and two-time ejection are used, the product may be damaged during demolding, resulting in an increase in the defective rate and reduced injection molding quality and effect of the product. For this reason, we propose a three-top structure for the injection mold. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a three-top structure for an injection mold, which can effectively solve the problems raised in the above-mentioned background technology through structural improvement.

[0005] The technical solution of the utility model is:

[0006] An injection mold three-top structure includes a base, a fixed plate, a movable plate and a push plate;

[0007] A fixed plate, a movable plate and a push plate are sequentially arranged at the open end of the base, an elastic member is arranged between the fixed plate and the movable plate, the fixed plate is fixedly connected to the base and a top plate is installed inside the base, a mold core is installed inside the push plate, an ejector pin is installed on the top surface of the top plate, the other end of the ejector pin extends to the mold core, an internal insert is installed on the fixed plate, an external insert is installed on the movable plate, and the other ends of the internal insert and the external insert both extend to the mold core.

[0008] Furthermore, a rubber plug hole is provided on the surface of the push plate for connecting with an external rubber plug.

[0009] Furthermore, a first limiting bolt is provided between the fixed plate and the movable plate, and a second limiting bolt is provided between the movable plate and the push plate.

[0010] Furthermore, the first limiting bolt and the second limiting bolt have the same shape and structure, the connecting end of the first limiting bolt is threadedly connected to the movable plate, the other end of the first limiting bolt extends into the fixed plate and is limited by the step of the fixed plate, the connecting end of the second limiting bolt is threadedly connected to the movable plate, the other end of the second limiting bolt extends into the push plate and is limited by the step of the push plate.

[0011] Furthermore, a mounting hole is provided on the bottom surface of the base, and the mounting hole is used to plug in an external push rod.

[0012] Furthermore, the elastic member is made of elastic gel.

[0013] The beneficial effects of the utility model are:

[0014] Compared with the prior art, the utility model has an elastic member between the fixed plate and the movable plate, a plug hole connected to the external plug, and an internal insert, an external insert and an ejector pin. When the injection molding machine is opened, the fixed plate and the movable plate can be separated under the action of the elastic member, so that the push plate can push the product out of the external insert. In the process of mold opening, the movable plate and the push plate are separated under the pull of the plug, so that the push plate can push the product out of the internal insert, thereby realizing two ejections. Finally, the entire product can be ejected under the push of the ejector plate and the ejector pin, thereby realizing three ejections. The three-top structure of the utility model can effectively eject and demold fan blades with smaller thickness, and can also ensure that the fan blades are not damaged by ejection, thereby ensuring the production quality of the fan blades, thereby reducing the defective rate of the product, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 For this utility model Figure 2 A magnified image of

[0018] Figure 4 It is a schematic diagram of the internal structure of the utility model.

[0019] In the figure, 1, base; 2, fixed plate; 3, movable plate; 4, push plate; 5, elastic member; 6, top plate; 7, mold core; 8, ejector pin; 9, internal insert; 10, external insert; 11, plug hole; 12, first limit bolt; 13, second limit bolt. DETAILED DESCRIPTION

[0020] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:

[0021] like Figure 1-4 As shown,

[0022] An injection mold three-top structure, comprising a base 1, a fixed plate 2, a movable plate 3 and a push plate 4;

[0023] The open end of the base 1 is sequentially provided with a fixed plate 2, a movable plate 3 and a push plate 4, an elastic member 5 is provided between the fixed plate 2 and the movable plate 3, the fixed plate 2 is fixedly connected to the base 1 and a top plate 6 is installed inside the base 1, a mold core 7 is installed inside the push plate 4, an ejector pin 8 is installed on the top surface of the top plate 6, and the other end of the ejector pin 8 extends to the mold core 7, an internal insert 9 is installed on the fixed plate 2, and an external insert 10 is installed on the movable plate 3, and the other ends of the internal insert 9 and the external insert 10 both extend to the mold core 7; in the present embodiment In the embodiment, when the injection molding machine is opened, the fixed plate 2 and the movable plate 3 can be separated under the action of the elastic member 5, so that the push plate 4 can push the product away from the external insert 10, realizing one push; in the process of opening the mold, under the pull of the rubber plug, the movable plate 3 and the push plate 4 are separated, so that the push plate 4 can push the product away from the internal insert 9, realizing two pushes; finally, the entire product can be ejected under the push of the ejector plate 6 and the ejector pin 8, realizing three pushes; the three-push method can effectively protect the product from being damaged by being pushed; in addition, it should be pointed out that: there is only one external insert 10.

[0024] As a preferred embodiment; the surface of the push plate 4 is provided with a plug hole 11 for connecting with an external plug; it can be understood that the mold structure of the present application is the lower mold part of the entire mold, and the upper mold part is close to the push plate 4 at one end as an A plate and fixedly installed with a plug, and the A plate and the push plate 4 are connected by a plug, and a plug hole 11 is provided, which can be connected with the plug, and during the mold opening process, the upper mold part will open, thereby pulling the push plate 4 to separate from the movable plate 3.

[0025] As a preferred embodiment, a first limiting bolt 12 is provided between the fixed plate 2 and the movable plate 3, and a second limiting bolt 13 is provided between the movable plate 3 and the push plate 4; by providing the first limiting bolt 12 and the second limiting bolt 13, the purpose is to limit the movable plate 3 and the push plate 4.

[0026] As a preferred embodiment; the shape and structure of the first limiting bolt 12 and the second limiting bolt 13 are the same, the connecting end of the first limiting bolt 12 is threadedly connected to the movable plate 3, the other end of the first limiting bolt 12 extends into the fixed plate 2 and is limited by the step of the fixed plate 2, the connecting end of the second limiting bolt 13 is threadedly connected to the movable plate 3, the other end of the second limiting bolt 13 extends into the push plate 4 and is limited by the step of the push plate 4; it can be understood that, specifically, the structural setting of the first limiting bolt 12 and the second limiting bolt 13, when the first limiting bolt 12 is connected to the step part of the fixed plate 2, it is specifically plug-in, and a connecting hole is set inside the fixed plate 2, the first limiting bolt 12 can move in the connecting hole, and after reaching the position, it can be limited by the nut part of the first limiting bolt 12 and the step there. Similarly, the second limiting bolt 13 has the same structure.

[0027] As a preferred embodiment, a mounting hole is provided on the bottom surface of the base 1, and the mounting hole is used to plug in an external push rod. It can be understood that the external push rod is plugged into the mounting hole, and one end of the push rod is fixedly connected to the top plate 6, and under the action of external force, the top plate 6 and the ejector pin 8 can be pushed to move, thereby ejecting the product.

[0028] As a preferred embodiment, the elastic member 5 is made of elastic gel and has elastic force. When the injection molding machine pulls the base 1, the fixed plate 2 and the movable plate 3 can be slightly separated, and correspondingly, the push plate 4 is pushed forward, so that the product is separated from the external insert 10.

[0029] The working principle of the utility model is as follows: the injection molding machine is located on one side of the base 1, and the upper mold part is located on one side of the push plate 4. When working, the injection molding machine retreats and pulls the base 1 backward. Under the action of the elastic member 5, the fixed plate 2 and the movable plate 3 can be separated. Conversely, the push plate 4 moves forward, so that the product is pushed away from the external insert 10, and one push is achieved; then, when the mold is opened, the upper mold part is separated from the push plate 4 under the action of external force, and the push plate 4 is pulled out under the pull of the rubber plug, so that the movable plate 3 is separated from the push plate 4. When separated, the push plate 4 pushes the product away from the internal insert 9, and the second push is achieved; finally, under the action of the external push rod, the ejector plate 6 and the ejector pin 8 are pushed, so that the ejector pin 8 ejects all the products, and the third push is achieved, and the demoulding of the product is completed;

[0030] It should be pointed out that the main problems in the prior art are: since the thickness of some fan blades is very thin, if conventional one-time ejection and two-time ejection are used, the product is easily damaged during demolding, resulting in an increase in the defective rate and reducing the injection molding quality and effect of the product;

[0031] Therefore, after the improvement of the present application, the three-top structure of the utility model can effectively eject and demould the fan blades with smaller thickness, and can also ensure that the fan blades are not damaged, thereby ensuring the production quality of the fan blades and reducing the defective rate of the product.

[0032] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. An injection mold three-top structure, characterized in that: It includes a base, a fixed plate, a movable plate and a push plate; A fixed plate, a movable plate and a push plate are sequentially arranged at the open end of the base, an elastic member is arranged between the fixed plate and the movable plate, the fixed plate is fixedly connected to the base and a top plate is installed inside the base, a mold core is installed inside the push plate, an ejector pin is installed on the top surface of the top plate, the other end of the ejector pin extends to the mold core, an internal insert is installed on the fixed plate, an external insert is installed on the movable plate, and the other ends of the internal insert and the external insert both extend to the mold core.

2. The three-top structure of an injection mold according to claim 1, characterized in that: The surface of the push plate is provided with a rubber plug hole for connecting with an external rubber plug.

3. The three-top structure of an injection mold according to claim 2, characterized in that: A first limiting bolt is arranged between the fixed plate and the movable plate, and a second limiting bolt is arranged between the movable plate and the push plate.

4. The three-top structure of the injection mold according to claim 3, characterized in that: The first limiting bolt and the second limiting bolt have the same shape and structure, the connecting end of the first limiting bolt is threadedly connected to the movable plate, the other end of the first limiting bolt extends into the fixed plate and is limited by the step of the fixed plate, the connecting end of the second limiting bolt is threadedly connected to the movable plate, the other end of the second limiting bolt extends into the push plate and is limited by the step of the push plate.

5. The three-top structure of the injection mold according to claim 4, characterized in that: The bottom surface of the base is provided with a mounting hole, and the mounting hole is used for plugging an external push rod.

6. The three-top structure of the injection mold according to claim 5, characterized in that: The elastic member is made of elastic gel.

Images