CN215849333U - Injection mold - Google Patents

Abstract

The utility model provides an injection mold. The injection mold comprises a fixed mold component, a movable mold component and an ejection component, wherein a shunt channel is arranged in the fixed mold component, the movable mold component comprises a push plate, a movable mold plate group and a movable mold insert, the movable mold plate group and the movable mold insert are arranged on the side, away from the fixed mold component, of the push plate, and when the fixed mold component and the movable mold component are assembled, the fixed mold component, the push plate and the movable mold insert are jointly enclosed to form the shunt channel, a product cavity and an auxiliary channel connected with the product cavity; the ejection assembly comprises a first ejection structure and a second ejection structure; when the ejection mechanism performs ejection action, the first ejection structure is used for driving the push plate and the movable template group to separate, the second ejection structure is used for ejecting the material body in the push plate, and the ejection action of the first ejection structure occurs before the ejection action of the second ejection structure. According to the scheme, through twice ejection actions, the stress concentration of the plastic part product during ejection can be reduced, the deformation of the plastic part product during ejection is reduced, and the processing quality of the plastic part product is improved.

Description

Injection mold

[ technical field ] A method for producing a semiconductor device

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

[ background of the utility model ]

Optical lenses are very precise optical devices in lens structures, and therefore, the requirements on the structural shape of the optical lenses are high when the optical lenses are processed. In the related art, the optical lens is generally a plastic product, an injection molding processing technology is usually adopted, and an injection molding processing mode inevitably needs to eject the plastic product, however, in the related art, a mode of ejecting the whole plastic product at one time is usually adopted, and the ejection pin positions are not distributed on two sides of the product, so that stress concentration borne by the plastic product in the ejection process is easily caused, the plastic product is deformed, and the molding quality of the optical lens is difficult to ensure by adopting the traditional structure.

[ Utility model ] content

The utility model aims to provide an injection mold which can realize ejection of a plastic product twice in the mold opening process, reduce stress concentration of the plastic product during ejection, reduce deformation of the plastic product during ejection and improve the processing quality of the plastic product.

The technical scheme of the utility model is as follows: the injection mold comprises a fixed mold component, a movable mold component and an ejection component, wherein the movable mold component is arranged opposite to the fixed mold component, the ejection component is arranged in the movable mold component, a runner is arranged in the fixed mold component, the movable mold component comprises a push plate close to the fixed mold component, a movable mold plate group arranged on the side, away from the fixed mold component, of the push plate and a movable mold insert connected to the movable mold plate group and embedded in the push plate, and when the fixed mold component and the movable mold component are closed, the fixed mold component, the push plate and the movable mold insert are enclosed together to form a product cavity and an auxiliary runner for connecting the runner and the product cavity; the ejection assembly comprises a first ejection structure which is assembled in the movable mould plate group in a sliding mode and connected to the push plate and a second ejection structure which is assembled in the movable mould plate group in a sliding mode; when the ejection action is performed, the first ejection structure is used for driving the push plate and the movable template group to separate, the second ejection structure is used for ejecting the material body in the auxiliary flow channel, and the ejection action of the first ejection structure occurs before the ejection action of the second ejection structure.

Further, have first sliding cavity in the movable mould plate group, first ejecting structure include along the mould opening direction slide assembly in first bedplate, one end connect in first bedplate and the other end connect in the push rod of push pedal and connect in first bedplate with first elastic component between the movable mould plate group, first sliding cavity is greater than along the length of mould opening direction first bedplate along the thickness of mould opening direction, first elastic component is used for providing the messenger first bedplate is towards being close to the elasticity of the direction motion of cover half subassembly.

Further, the movable mould plate group is internally provided with a second sliding cavity, the second sliding cavity is communicated with the first sliding cavity and is located the first sliding cavity is close to the fixed mould component, the second ejection structure comprises a second base plate and a second elastic element, the second base plate is assembled in the second sliding cavity in a sliding mode along the mould opening direction, one end of the second base plate is connected to the second base plate, the other end of the second base plate extends to the runner thimble of the auxiliary runner, the second elastic element is connected to the second base plate and the movable mould plate group, the length of the second sliding cavity along the mould opening direction is larger than the thickness of the second base plate along the mould opening direction, and the second elastic element is used for providing elastic force for enabling the second base plate to move in the direction far away from the fixed mould component.

Further, the second seat plate comprises a surface needle base plate and a surface needle plate fixed on the surface needle base plate and close to the fixed die assembly side, one end of the flow channel ejector pin abuts against the surface needle base plate, and the other end of the flow channel ejector pin penetrates through the surface needle plate.

Further, when the fixed die assembly and the movable die assembly are assembled, the fixed die assembly, the push plate and the movable die insert are further enclosed to form an auxiliary material cavity, the auxiliary material cavity is located on one side, away from the auxiliary flow channel, of the product cavity, the auxiliary material cavity is communicated with the product cavity, and the second ejection structure further comprises an auxiliary ejector pin, one end of the auxiliary ejector pin is connected to the second base plate, and the other end of the auxiliary ejector pin extends to the auxiliary material cavity.

Furthermore, one side of the movable mold plate group, which is far away from the fixed mold component, is provided with a ejector rod hole communicated with the first sliding cavity, and the first seat plate is provided with a through hole which is just opposite to the ejector rod hole.

Further, the fixed die assembly comprises a fixed die plate group and a fixed die insert embedded in the fixed die plate group, and the fixed die insert is positioned on the side of the product cavity deviating from the movable die insert.

Further, the cover half plate group includes the cover half bedplate, set up in being close to of cover half bedplate the cover half backing plate of movable mould subassembly side and set up in being close to of cover half backing plate the cover half panel of movable mould subassembly side, the one end of cover half mold insert connect in cover half backing plate and the other end are embedded in the cover half panel.

Further, the movable mould plate group includes the movable mould bedplate, set up in being close to of movable mould bedplate the first movable mould backing plate of cover half subassembly side with set up in being close to of first movable mould backing plate the second movable mould backing plate of cover half subassembly side, the movable mould insert connect in the second movable mould backing plate.

Further, the side, close to the product cavity, of the fixed mold insert and the side, close to the product cavity, of the movable mold insert are both smooth curved surfaces.

The utility model has the beneficial effects that:

the injection mold can form a product cavity and an auxiliary runner after being closed, then injection molding is carried out, after injection molding is completed, when the mold opening is carried out to perform ejection action, firstly, the first ejection structure drives the push plate and the movable template to separate, at the moment, the movable template can be separated from a product in the product cavity, ejection for the first time is realized, then, the second ejection structure ejects a material body in the auxiliary runner, ejection for the second time is realized, through the two-time ejection action, the stress concentration of a plastic product during ejection can be reduced, the deformation of the plastic product during ejection is reduced, and the processing quality of the plastic product is improved.

[ description of the drawings ]

FIG. 1 is a schematic structural view of an injection mold of the present invention;

FIG. 2 is a cross-sectional view of the injection mold of the present invention taken along the line A-A in FIG. 1;

FIG. 3 is a schematic perspective exploded view of a part of the structure of the injection mold of the utility model;

fig. 4 is an enlarged schematic view of detail B in fig. 2.

[ detailed description ] embodiments

The utility model is further described with reference to the following figures and embodiments.

As shown in fig. 1-4, an injection mold is provided, which includes a fixed mold component 1, a movable mold component 2 disposed opposite to the fixed mold component 1, and an ejection component 3 disposed in the movable mold component 2, wherein the fixed mold component 1 has a runner 10, the movable mold component 2 includes a push plate close to the fixed mold component 1, a movable mold plate set 22 disposed on the push plate and away from the fixed mold component 1, and a movable mold insert 23 connected to the movable mold plate set 22 and embedded in the push plate, when the fixed mold component 1 and the movable mold component 2 are assembled, the fixed mold component 1, the push plate and the movable mold insert 23 together enclose to form a product cavity 20 and an auxiliary runner 30 connecting the runner 10 and the product cavity 20; the ejection assembly 3 comprises a first ejection structure 31 which is slidably assembled in the movable mould plate group 22 and connected with the ejection plate, and a second ejection structure 32 which is slidably assembled in the movable mould plate group 22; when the ejection action is performed, the first ejection structure 31 is used for driving the push plate to be separated from the movable die plate group 22, the second ejection structure 32 is used for ejecting the material body in the auxiliary flow passage 30, and the ejection action of the first ejection structure 31 occurs before the ejection action of the second ejection structure 32.

After the injection mold is closed, a product cavity 20 and an auxiliary runner 30 can be formed, injection molding is performed later, after injection molding is completed, when the mold opening is performed with ejection action, firstly, the first ejection structure 31 drives the push plate to be separated from the movable mold plate group 22, at the moment, the movable mold insert 23 can be separated from a product in the product cavity 20, ejection for the first time is realized, then, the second ejection structure 32 ejects a material body in the auxiliary runner 30, ejection for the second time is realized, through the two-time ejection action, stress concentration of a plastic product during ejection can be reduced, deformation of the plastic product during ejection is reduced, and the processing quality of the plastic product is improved. The scheme has the advantages that the ejection for the first time ensures that the product and the runner material body are kept relatively static during die opening, can ensure sufficient cooling time and range, improves the elastic modulus of the plastic part, reduces the deformation, reduces the demolding force by twice demolding, weakens the stress concentration, reduces the product deformation, and can improve the quality of the optical lens when the optical lens is molded.

In the embodiment, the fixed die assembly 1 comprises a fixed die plate group 11 and a fixed die insert 12 embedded in the fixed die plate group 11, and the fixed die insert 12 is positioned on the side of the product cavity 20, which is far away from the movable die insert 23; the fixed die plate set 11 comprises a fixed die base plate 111, a fixed die base plate 112 arranged on the fixed die base plate 111 and close to the movable die component 2, and a fixed die panel 113 arranged on the fixed die base plate 112 and close to the movable die component 2, wherein one end of the fixed die insert 12 is connected to the fixed die base plate 112, and the other end of the fixed die insert is embedded in the fixed die panel 113; the movable mold plate group 22 comprises a movable mold base plate 221, a first movable mold base plate 222 arranged on the side, close to the fixed mold assembly 1, of the movable mold base plate 221 and a second movable mold base plate 223 arranged on the side, close to the fixed mold assembly 1, of the first movable mold base plate 222, and the movable mold insert 23 is connected to the second movable mold base plate 223; the side of the fixed mold insert 12 close to the product cavity 20 and the side of the movable mold insert 23 close to the product cavity 20 are both smooth curved surfaces. The injection mold of the present embodiment has eight cavities, which is only an example of the present embodiment, and it should be understood that the number of cavities in the injection mold may be set according to actual needs, and in addition, the shape of the cavity may also be adaptively designed according to actual situations, which is not limited herein, and the product to be molded is not limited to the optical lens.

The movable mold plate group 22 is internally provided with a first sliding cavity 50, the first ejection structure 31 comprises a first seat plate 311 which is assembled in the first sliding cavity 50 in a sliding mode along the mold opening direction, a push rod 312 with one end connected to the first seat plate 311 and the other end connected to the push plate, and a first elastic element 313 connected between the first seat plate 311 and the movable mold plate group 22, the length of the first sliding cavity 50 along the mold opening direction is greater than the thickness of the first seat plate 311 along the mold opening direction, and the first elastic element 313 is used for providing elastic force for enabling the first seat plate 311 to move towards the direction close to the fixed mold component 1. Specifically, the first sliding cavity 50 is formed by enclosing a first movable mold base plate 222 and a movable mold base plate 221 together, the first base plate 311 can move in the first sliding cavity 50 within a predetermined range along a mold opening direction, the first elastic member 313 is a spring, the number of the first elastic member 313 can be set to be one, two, three, four, and the like, the first elastic member 313 is arranged between the first base plate 311 and the movable mold base plate 221, when the mold is opened, under the elastic force of the first elastic member 313, the first base plate 311 moves away from the movable mold base plate 221, the push plate is driven to be separated from the movable mold base plate 22 through the action of the push rod 312, because the movable mold insert 23 is connected to the movable mold plate group 22, the movable mold insert 23 is pulled out of the product cavity 20 at this time, so as to realize the first mold release of the movable mold insert 23 from the plastic product, when the mold is closed, the push plate is attached to the movable mold plate 22, through the action of the push rod 312, the first base plate 311 can be driven to be attached to the movable mold base plate 221, the first elastic member 313 is compressed at this time.

The movable mold plate group 22 is internally provided with a second sliding cavity 60, the second sliding cavity 60 is communicated with the first sliding cavity 50 and is positioned on the side, close to the fixed mold assembly 1, of the first sliding cavity 50, the second sliding cavity 60 comprises a second seat plate 321, one end of which is slidably assembled in the second sliding cavity 60 along the mold opening direction, a runner thimble 322, one end of which is connected with the second seat plate 321 and the other end of which extends to the auxiliary runner 30, and a second elastic element 323, the second elastic element 323 is connected with the second seat plate 321 and the movable mold plate group 22, the length of the second sliding cavity 60 along the mold opening direction is greater than the thickness of the second seat plate 321 along the mold opening direction, and the second elastic element 323 is used for providing elastic force for enabling the second seat plate 321 to move towards the direction far away from the fixed mold assembly 1. Specifically, the second seat plate 321 can move in the second sliding cavity 60 in a predetermined distance along the mold opening direction, the second elastic element 323 is a spring, the second elastic element 323 is disposed between the second seat plate 321 and the second movable mold backing plate 223, the second seat plate 321 can slide relative to the first seat plate 311, in order to ensure the relative position relationship between the second seat plate 321 and the first seat plate 311, the second seat plate 321 and the first seat plate 311 can be provided with a slide rod for guiding, a side of the movable mold plate set 22 away from the stationary mold component 1 is provided with a ejector rod hole 220 communicating with the first sliding cavity 50, the first seat plate 311 is provided with a via hole 310 facing the ejector rod hole 220, when the mold is opened, the ejector rod passes through the ejector rod hole 220 and the via hole 310 and abuts against the second seat plate 321, at this time, the second seat plate 321 moves relative to the push rod 312, the flow channel 322 abuts against the ejector pin body in the auxiliary flow channel, thereby realizing secondary mold release, when the mold is closed, the propping force of the push rod is gradually removed, and the second seat plate 321 is reset under the action of the second elastic element 323.

In this embodiment, the second seat plate 321 includes a thimble bottom plate 3211 and a thimble plate fixed to the thimble bottom plate 3211 and close to the fixed mold assembly 1 side, one end of the runner thimble 322 abuts against the thimble bottom plate 3211, and the other end of the runner thimble 322 passes through the thimble plate.

In order to further reduce the deformation of the product, in this embodiment, when the fixed mold assembly 1 and the movable mold assembly 2 are closed, the fixed mold assembly 1, the push plate and the movable mold insert 23 further enclose to form an auxiliary material cavity 40, the auxiliary material cavity 40 is located on one side of the product cavity 20 away from the auxiliary flow channel 30, the auxiliary material cavity 40 is communicated with the product cavity 20, and the second ejection structure 32 further includes an auxiliary thimble 324, one end of which is connected to the second seat plate 321, and the other end of which extends to the auxiliary material cavity 40. The shape of the auxiliary material cavity 40 can be set according to actual conditions, and is not limited herein, because the auxiliary thimble 324 and the runner thimble 322 are both connected to the second seat plate 321, the action of the auxiliary thimble 324 is consistent with that of the runner thimble 322, the material in the auxiliary material cavity 40 and the material in the auxiliary runner are both ejected in the second ejection action, and because the auxiliary runner and the auxiliary material cavity 40 are arranged on both sides of the product cavity 20, the dual gate design can realize ejection of the product at both sides, the stress of the product during ejection is uniform, the stress concentration of the plastic product during ejection can be reduced, the deformation is reduced, the product quality is improved, and the method is suitable for products with larger diameter-thickness ratio (ratio of outer diameter to thickness).

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the utility model.

Claims (10)

1. The utility model provides an injection mold, including the cover half subassembly, with the relative movable mould subassembly that sets up of cover half subassembly with set up in ejecting subassembly in the movable mould subassembly, its characterized in that:

the fixed die assembly is internally provided with a shunting channel, the movable die assembly comprises a push plate close to the fixed die assembly, a movable die plate group arranged on the side of the push plate, which is far away from the fixed die assembly, and a movable die insert which is connected with the movable die plate group and is embedded in the push plate, and when the fixed die assembly and the movable die assembly are assembled, the fixed die assembly, the push plate and the movable die insert are jointly enclosed to form a product cavity and an auxiliary channel for connecting the shunting channel and the product cavity;

the ejection assembly comprises a first ejection structure which is assembled in the movable mould plate group in a sliding mode and connected to the push plate and a second ejection structure which is assembled in the movable mould plate group in a sliding mode; when the ejection action is performed, the first ejection structure is used for driving the push plate and the movable template group to separate, the second ejection structure is used for ejecting the material body in the auxiliary flow channel, and the ejection action of the first ejection structure occurs before the ejection action of the second ejection structure.

2. An injection mold according to claim 1, wherein the movable mold plate group has a first sliding cavity therein, the first ejection structure includes a first seat plate slidably fitted in the first sliding cavity in the mold opening direction, a push rod having one end connected to the first seat plate and the other end connected to the push plate, and a first elastic member connected between the first seat plate and the movable mold plate group, a length of the first sliding cavity in the mold opening direction is greater than a thickness of the first seat plate in the mold opening direction, and the first elastic member is configured to provide an elastic force for moving the first seat plate in a direction approaching the stationary mold assembly.

3. An injection mold according to claim 2, wherein the movable mold plate group is provided therein with a second sliding cavity, the second sliding cavity is communicated with the first sliding cavity and is located on a side of the first sliding cavity close to the fixed mold component, the second ejection structure comprises a second seat plate slidably assembled in the second sliding cavity along the mold opening direction, a runner ejector pin with one end connected to the second seat plate and the other end extending to the auxiliary runner, and a second elastic member connected to the second seat plate and the movable mold plate group, a length of the second sliding cavity along the mold opening direction is greater than a thickness of the second seat plate along the mold opening direction, and the second elastic member is used for providing an elastic force for moving the second seat plate in a direction away from the fixed mold component.

4. An injection mold according to claim 3, wherein the second seat plate comprises a surface needle bottom plate and a surface needle plate fixed on the surface needle bottom plate and close to the fixed mold assembly side, one end of the runner ejector pin abuts against the surface needle bottom plate, and the other end of the runner ejector pin penetrates through the surface needle plate.

5. The injection mold according to claim 3, wherein when the fixed mold assembly and the movable mold assembly are closed, the fixed mold assembly, the push plate and the movable mold insert further enclose to form an auxiliary material cavity, the auxiliary material cavity is located on one side of the product cavity far away from the auxiliary runner, the auxiliary material cavity is communicated with the product cavity, and the second ejection structure further comprises an auxiliary ejector pin, one end of the auxiliary ejector pin is connected to the second base plate, and the other end of the auxiliary ejector pin extends to the auxiliary material cavity.

6. An injection mold according to claim 3, wherein one side of the movable mold plate group away from the fixed mold component is provided with a ejector rod hole communicated with the first sliding cavity, and the first seat plate is provided with a through hole opposite to the ejector rod hole.

7. An injection mold according to any one of claims 1 to 6, wherein the stationary mold assembly comprises a stationary mold plate set and a stationary mold insert embedded within the stationary mold plate set, the stationary mold insert being located on a side of the product cavity facing away from the movable mold insert.

8. An injection mold according to claim 7, wherein the fixed mold plate set comprises a fixed mold base plate, a fixed mold base plate arranged on the fixed mold base plate and close to the movable mold assembly side, and a fixed mold panel arranged on the fixed mold base plate and close to the movable mold assembly side, and one end of the fixed mold insert is connected to the fixed mold base plate and the other end of the fixed mold insert is embedded in the fixed mold panel.

9. An injection mold according to claim 7, wherein the movable mold plate group comprises a movable mold base plate, a first movable mold base plate arranged on the movable mold base plate close to the fixed mold component side, and a second movable mold base plate arranged on the first movable mold base plate close to the fixed mold component side, and the movable mold insert is connected to the second movable mold base plate.

10. The injection mold of claim 7, wherein both the product cavity-proximate side of the stationary mold insert and the product cavity-proximate side of the movable mold insert are smooth curved surfaces.

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