CN111823514B

CN111823514B - Injection mold structure

Info

Publication number: CN111823514B
Application number: CN201910316474.XA
Authority: CN
Inventors: 王强
Original assignee: Mitac Precision Technology Kunshan Ltd
Current assignee: Mitac Precision Technology Kunshan Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2022-04-19
Anticipated expiration: 2039-04-19
Also published as: CN111823514A

Abstract

The invention relates to the technical field of molds, and particularly discloses an injection mold structure. The injection mold structure comprises a male mold, a female mold and a sliding block mechanism; the sliding block mechanism comprises a sliding block, a push rod, a shovel base and a driving device; wherein, the slide block is arranged on the male die in a sliding way; the push rod is connected with the female die and can push the sliding block to slide relative to the male die in the die opening and closing process; the shovel base is movably arranged in the male die and can wedge the sliding block in a die closing state; the driving device is arranged on the side of the male die and can drive the shovel base to move relative to the male die. This injection mold structure can avoid shovel base and treat to take place to interfere between the attached diaphragm to guarantee the stability of the in-process slider of moulding plastics, improved the unedged condition of injection moulding product surface formation.

Description

Injection mold structure

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of molds, in particular to an injection mold structure.

[ background of the invention ]

The IMR (in-mold transfer printing) technology is one of the in-mold printing technologies, and is characterized in that a pattern is printed on a film, a film is attached to a mold cavity through a film feeding machine to be extruded, an ink layer with the pattern is separated from the film after being extruded, and the ink layer is left on a plastic part to obtain the plastic part with the decorative pattern on the surface. This IMR technique is common in notebook applications, especially in the a and C pieces of the four major pieces.

In a conventional injection mold, a slider blade base is generally provided on the female mold side. However, when four-sided sliding blocks need to be arranged on the periphery of the product, if a sliding block shovel base is still arranged on the female die side, interference between the sliding block shovel base and a film conveyed by the film feeding machine and the shovel base is easy to occur; if not set up the shovel base, make the slider take place to become flexible under the pressure of moulding plastics easily, and then lead to product outward appearance face to produce deckle edge.

Therefore, it is necessary to design an injection mold structure to solve the above problems.

[ summary of the invention ]

The invention aims to provide an injection mold structure which can avoid interference between a shovel base and a membrane to be attached, ensure the stability of a sliding block in the injection molding process and improve the condition of forming burrs on the surface of an injection molding product.

In order to achieve the purpose, the invention adopts the following technical scheme:

an injection mold structure comprises a male mold, a female mold and a sliding block mechanism; the slider mechanism includes:

the sliding block is arranged on the male die in a sliding mode;

the push rod is connected with the female die and can push the sliding block to slide relative to the male die in the die opening and closing process;

the shovel base is movably arranged in the male die and can wedge the sliding block in a die closing state; and

and the driving device is arranged on the side of the male die and can drive the shovel base to move relative to the male die.

Further, the end part of the shovel base is provided with a wedge surface; the outer side of the sliding block is provided with an inclined surface matched with the inclined wedge surface.

Further, the inclination angle of the inclined plane is 3-5 degrees.

Furthermore, a through hole is formed in the male die, and the shovel base is located in the through hole and moves along the axis direction of the through hole.

Furthermore, one end of the through hole, which is close to the sliding block, is provided with a positioning groove; a shovel base positioning block is arranged in the positioning groove, and the shovel base can extend out of the shovel base positioning block.

Further, the driving device is an oil cylinder.

Further, the oil cylinder is contained in the male die.

The invention has the beneficial effects that: according to the injection mold structure, the shovel base and the driving device are arranged on the male mold side, so that interference between the shovel base and a membrane to be attached is avoided, the stability of the sliding block in the injection molding process is ensured, and burrs are effectively prevented from being generated on the surface of an injection molding product.

[ description of the drawings ]

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

FIG. 2 is an enlarged schematic view at I of FIG. 1;

FIG. 3 is a schematic structural view of the injection mold structure provided by the present invention after mold closing;

FIG. 4 is an enlarged schematic view taken at II in FIG. 3;

FIG. 5 is a schematic structural view of an injection mold structure according to the present invention when a shovel base wedges a slider;

FIG. 6 is an enlarged schematic view at III in FIG. 5;

FIG. 7 is a schematic structural view of the injection mold structure provided by the present invention after mold opening.

[ detailed description ] embodiments

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1-7, an injection mold structure includes a male mold 10, a female mold 20, and a slider mechanism 30; the slide block mechanism comprises a slide block 31, a push rod 32, a shovel base 33 and a driving device 34; wherein, the slide block 31 is arranged on the male die 10 in a sliding way; the push rod 32 is connected with the female die 20 and can push the slide block 31 to slide relative to the male die 10 in the die opening and closing process; the shovel base 33 is movably arranged in the male die 10 and can wedge the slide block 31 in a die closing state; the driving device 34 is provided on the male mold 10 side and can drive the blade base 33 to move relative to the male mold 10.

Further, the end of the shovel base 33 has a cammed surface 331; the slider 31 has an inclined surface 311 on the outer side thereof, which engages with the cam surface 331. In a preferred embodiment of the present invention, the inclined angle of the tapered surface 331 is 3 ° to 5 °.

In the structure of the injection mold, a through hole is formed in the male mold 10, and the shovel base 33 is located in the through hole and moves along the axis direction of the through hole. Furthermore, one end of the through hole close to the slide block 31 is provided with a positioning groove; a shovel base positioning block 35 is arranged in the positioning groove, and the shovel base 33 can extend out of the shovel base positioning block 35.

In the injection mold structure, the driving device 34 is preferably an oil cylinder. In order to avoid damage to the cylinder and to reduce the thickness of the injection mold of the present invention, the cylinder may be housed in the male mold 10.

The working principle of the injection mold structure of the invention is as follows:

in the state of opening the die, the film feeding machine conveys the film between the male die core and the female die core; vacuumizing by using a vacuum pump to attach the membrane to the surface of the master mould; closing the mold; as shown in fig. 1-4.

After the die is closed, the oil cylinder drives the shovel base to move, so that the shovel base extends out of the through hole to wedge the sliding block; injection molding, filling, pressure maintaining and cooling; as shown in fig. 5-6.

After the injection product is cooled, the oil cylinder drives the shovel base 33 to move, so that the shovel base 33 loosens the sliding block 31, and the shovel base 33 retreats into the through hole; opening the mold, wherein the push rod 32 pushes the slide block 31 to move so as to enable the slide block 31 to be separated from the injection molding product; and ejecting the product. As shown in fig. 7.

Therefore, according to the injection mold structure, the shovel base 33 and the oil cylinder 31 are arranged on the male mold side, so that interference between the shovel base 33 and a diaphragm to be attached is avoided, the stability of the sliding block 31 in the injection molding process is ensured, and burrs are effectively prevented from being generated on the surface of an injection molding product.

The technical principles of the present invention have been described above in connection with specific embodiments, which are intended to explain the principles of the present invention and should not be construed as limiting the scope of the present invention in any way. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. An injection mold structure comprises a male mold, a female mold and a sliding block mechanism; characterized in that, the slider mechanism includes:

the sliding block is arranged on the male die in a sliding mode;

the shovel base is movably arranged in the male die and can wedge the sliding block in a die closing state, and the end part of the shovel base is provided with a wedge surface; the outer side of the sliding block is provided with an inclined surface matched with the inclined wedge surface;

a through hole is formed in the male die, the shovel base is positioned in the through hole and moves along the axis direction of the through hole, and a positioning groove is formed in one end, close to the sliding block, of the through hole; a shovel base positioning block is arranged in the positioning groove, and the shovel base can extend out of the shovel base positioning block; and

2. An injection mold structure as claimed in claim 1, wherein the angle of inclination of the cammed surface is 3 ° to 5 °.

3. An injection mold structure as claimed in claim 1, wherein said drive means is a cylinder.

4. An injection mold structure as claimed in claim 3, wherein said cylinder is received within said male mold.