CN216683120U

CN216683120U - Core pulling structure of through hole in pitched roof and injection mold

Info

Publication number: CN216683120U
Application number: CN202123202297.4U
Authority: CN
Inventors: 林从盛; 葛文枝; 潘华杰; 陈建彬; 严盾; 胡宝宁
Original assignee: Ninghai Xiandai Mould Co ltd
Current assignee: Ninghai Xiandai Mould Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-06-07
Anticipated expiration: 2031-12-20

Abstract

The utility model relates to the technical field of injection molds, in particular to a core-pulling structure of a through hole in an inclined top and an injection mold, wherein the core-pulling structure comprises a movable mold, a movable mold insert, an inclined top block, an inclined top insert and a core-pulling body; the movable die insert is arranged on the movable die; the inclined ejector block abuts against the upper part of the movable die insert; the inclined ejecting block is provided with an inclined ejecting embedding cavity; the inclined ejection insert is positioned in the inclined ejection insert cavity, one end of the inclined ejection insert is detachably connected to the inclined ejection block, the core pulling body is obliquely arranged on the movable die insert, and the oblique direction of the core pulling body is the same as the ejection direction of the inclined ejection block; the top of the core pulling body penetrates through the inclined top block and abuts against the bottom of the inclined top insert; when the inclined ejecting block is obliquely ejected by the ejector rod from bottom to top, the inclined ejecting block is separated from the core-pulling body. The utility model has the advantages that the core-pulling body does not need to be separately pulled out, the product can be directly ejected conveniently, the structure is simple, the processing is convenient, and the cost is low.

Description

Core pulling structure of through hole in pitched roof and injection mold

Technical Field

The utility model relates to the technical field of injection molds, in particular to a core pulling structure of a through hole in an inclined top and an injection mold.

Background

As shown in fig. 6, in the injection molding process of the conventional plastic product 100, since the product 100 is provided with the U-shaped connecting portion 101, the middle plate of the U-shaped connecting portion 101 is provided with the through hole 102, and the through hole 102 is in the middle of the inclination, if a core pulling structure is not designed, the inclined ejector block cannot be ejected by the ejector rod.

The existing core pulling structure is shown in fig. 7, the core pulling body is driven by the slider to move downwards first, and then the core pulling body moves outwards to achieve the purpose of pulling the core through the through hole, and then the ejector rod 9 obliquely upwards jacks the inclined ejector block 3 until the product 100 is completely demolded from the inclined ejector block 3, and finally the product 100 is taken out. The core pulling structure used in the process is too complex, the machining is difficult, the cost is high, and the core pulling needs to be separated from the inclined ejector block to act, so that the product ejection efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems of complex core pulling structure, difficult processing and high cost in the prior art, and provides the core pulling structure of the through hole in the pitched roof, which is convenient for product ejection, simple in structure, convenient to process and low in cost.

For the purpose of the utility model, the following technical scheme is adopted for realizing the purpose:

a core-pulling structure of a through hole in an inclined top comprises a movable die, a movable die insert, an inclined top block, an inclined top insert and a core-pulling body; the movable die insert is arranged on the movable die; the inclined ejector block abuts against the upper part of the movable die insert; the inclined ejecting block is provided with an inclined ejecting embedding cavity; the inclined ejection insert is positioned in the inclined ejection insert cavity, one end of the inclined ejection insert is detachably connected to the inclined ejection block, the core pulling body is obliquely arranged on the movable die insert, and the oblique direction of the core pulling body is the same as the ejection direction of the inclined ejection block; the top of the core pulling body penetrates through the inclined top block and abuts against the bottom of the inclined top insert; when the inclined ejecting block is obliquely ejected by the ejector rod from bottom to top, the inclined ejecting block is separated from the core-pulling body. The core pulling body arranged obliquely is convenient to eject, the inclined ejecting block can be directly separated from the core pulling body, and the core pulling body does not need to be pulled away independently, so that the product is convenient to eject.

Preferably, the movable die insert is provided with an inclined core-pulling jack; the core-pulling body is obliquely inserted into the movable die insert from bottom to top. The core body is convenient to install by inserting.

Preferably, a U-shaped cavity gap is formed between the pitched roof insert and the pitched roof insert cavity. The inclined top embedding cavity is convenient for the product to form a U-shaped connecting part.

Preferably, one side of the pitched roof insert block is provided with a matching groove; the inclined ejector block is provided with a matching convex block matched with the matching groove. The oblique jacking insert and the oblique jacking block are conveniently and tightly connected, and the connection strength and the connection sealing performance are improved.

Preferably, the inclined ejecting insert is horizontally and fixedly connected to the inclined ejecting block through a connecting screw; the connecting screw penetrates through the matching lug to be connected to the matching groove. The connection strength is convenient to improve through the connecting screw.

An injection mold comprises the core-pulling structure and a fixed mold; the fixed die is matched with the movable die and is positioned above the movable die; when the die is closed, a product cavity is formed between the fixed die and the core-pulling structure. When the mold is opened, the product can be conveniently ejected, the processing is convenient, and the cost is saved.

In summary, the core pulling structure has the advantages that the core pulling body is obliquely arranged, so that the inclined ejector block can be directly separated from the core pulling body when the inclined ejector block is ejected, the core pulling body does not need to be separately pulled out, a product is conveniently ejected directly, the processing is convenient, and the cost is saved.

The injection mold has the advantages that when the mold is opened, the core-pulling body does not need to be separately pulled out, and the product can be directly ejected conveniently.

Drawings

Fig. 1 is a sectional view of a core-pulling structure of a through hole in a pitched roof of the present invention.

Fig. 2 is a schematic structural diagram of a core-pulling structure of a through hole in the pitched roof.

Fig. 3 is an explosion structure diagram of the core-pulling structure of the through hole in the pitched roof of the utility model.

Fig. 4 is a schematic structural view of the lifter block of the present invention.

Fig. 5 is a sectional view of the injection mold of the present invention.

Fig. 6 is a schematic structural diagram of a conventional product.

Fig. 7 is a schematic structural diagram of a conventional core pulling structure.

Wherein: 1-moving a mold; 2-moving die insert; 21-core pulling jacks; 3-inclined jacking block; 31-inclined top embedding cavity; 32-mating bumps; 4-a pitched roof insert; 41 mating grooves; 5-drawing the core body; 6-cavity clearance; 7-connecting screws; 8-fixing the mold; 9-a top rod; 100-product; 101-U-shaped connecting part; 102-through holes.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Example 1

As shown in fig. 1 to 4, a core pulling structure of a through hole in an inclined top comprises a movable die 1, a movable die insert 2, an inclined top block 3, an inclined top insert 4 and a core pulling body 5; the movable die insert 2 is fixedly arranged on the movable die 1; the inclined ejector block 3 is abutted above the moving die insert 2; an L-shaped inclined top embedding cavity 31 is arranged on the inclined top block 3; the pitched roof insert 4 is embedded in the pitched roof insert cavity 31, and the left end of the pitched roof insert 4 is detachably connected to the pitched roof block 3 through a connecting screw 7. Gaps are reserved between the inclined top insert 4 and the front side, the rear side and the bottom of the inclined top insert cavity 31, so that a U-shaped cavity gap 6 of a product is formed, and the cavity gap 6 is used for forming a U-shaped connecting part 101 of the product 100. The bottom of the cavity gap 6 is positioned between the top surface of the pitched roof insert 31 and the bottom surface of the pitched roof insert 4, and the bottom of the cavity gap 6 is horizontal. The U-shaped connecting part 101 is formed on the product 100 by the cooperation of the inclined top insert cavity 31 and the inclined top insert 4. The left side of the pitched roof insert 4 is provided with a matching groove 41; the left side of the inclined ejecting block 3 is provided with a matching convex block 32 matched with the matching groove 41. The inclined ejecting insert 4 and the inclined ejecting block 3 are conveniently and tightly connected, and the connection strength and the connection sealing performance are improved. The inclined top insert 4 is horizontally and fixedly connected to the inclined top block 3 through a connecting screw 7; the connection screw 7 passes through the matching projection 32 to be connected to the matching groove 41, and the connection strength is improved by the connection screw 7. The bottom surface of the pitched roof insert 4 is parallel to the top surface of the pitched roof insert cavity 31, so that a middle plate of the product 100 with a horizontal U-shaped connecting part 101 is formed.

An inclined core-pulling jack 21 is arranged on the movable die insert 2; the core-pulling body 5 is obliquely inserted into the movable die insert 2 from bottom to top. The insertion facilitates the installation of the drawer core body 5. The core pulling body 5 is cylindrical, and the top of the core pulling body 5 sequentially penetrates through the bottom of the inclined top block 3 and the cavity gap 6 to be abutted against the bottom surface of the inclined top insert 4, so that the core pulling body 5 is attached to the bottom surface of the inclined top insert 4 during injection molding to form a through hole 102 in the product 100. The core body 5 is convenient to smoothly separate from the core body 5 when the inclined ejecting block 3 is ejected through the inclined setting, so that the product is ejected conveniently. The direction in which the inclined ejector block 3 is ejected by the ejector rod 9 is the same as the inclined direction of the drawer core body 5. The top of ejector pin 9 passes movable mould insert 2 and connects on oblique kicking block 3, and when oblique kicking block 3 was ejecting by ejector pin 9, the action of loosing core was kept motionless to automatic realization, thereby realize the product drawing of patterns, can guarantee through the same direction that oblique kicking block 3 can not bump with the body of loosing core 5 when ejecting, thereby further ensure ejecting smoothness nature.

To sum up, the advantage of the structure of loosing core of this embodiment 1 is that the body of loosing core that the slope set up is convenient for when the oblique kicking block 3 is ejecting by ejector pin 9, and the oblique kicking block 3 can directly break away from with the body of loosing core 5, need not to take out the body of loosing core 5 alone and separate, and further makes things convenient for the product directly ejecting, and processing is convenient, saves the cost.

Example 2

As shown in fig. 5, an injection mold includes a core pulling structure and a fixed mold 8; the core pulling structure in this embodiment is the same as the core pulling structure of the through hole in the lifter described in embodiment 1, and the use method is the same. The fixed die 8 is matched with the movable die 1 in the core-pulling structure, and the fixed die 8 is positioned above the movable die 1; when the die is closed, a product cavity is formed between the fixed die 8 and the core-pulling structure. Through this injection mold, need not during the die sinking and will loose core the body and take out separately, through the body of loosing core that the slope in the structure of loosing core set up be convenient for oblique kicking block by ejector pin 9 on the movable mould 1 ejecting, oblique kicking block 3 can directly break away from with the body of loosing core, make things convenient for the product directly ejecting to save the mould cost.

When the mold is in operation, after the fixed mold 8 and the movable mold 1 are matched and injection molding of the product 100 is completed, the mold is opened, when the product 100 is ejected, the ejector rod drives the inclined ejecting block 3 to eject upwards in an inclined manner, so that the product 100 is ejected upwards, because the direction of the core pulling body 5 is the same as that of the inclined ejecting block 3, the inclined ejecting block 3 can be smoothly ejected from the core pulling body 5 during ejection, the ejection is continued after the inclined ejecting block 3 is completely ejected from the core pulling body 5 until the product 100 is completely ejected from the inclined ejecting block 3, and then the product 100 is taken out; and vice versa.

Fig. 6 shows a structural shape of a product 100 injected by the injection mold.

In conclusion, the injection mold of the embodiment 2 has the advantages that when the mold is opened, the core pulling body does not need to be pulled away independently, the product is convenient to eject directly, and the mold cost is saved.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.

Claims

1. A core pulling structure of a through hole in an inclined top is characterized by comprising a movable mold (1), a movable mold insert (2), an inclined top block (3), an inclined top insert (4) and a core pulling body (5); the movable die insert (2) is arranged on the movable die (1); the inclined ejector block (3) is abutted to the upper part of the movable die insert (2); an inclined top embedding cavity (31) is arranged on the inclined top block (3); the inclined ejection insert (4) is positioned in the inclined ejection insert cavity (31), one end of the inclined ejection insert (4) is detachably connected to the inclined ejection block (3), the core pulling body (5) is obliquely arranged on the movable die insert (2), and the oblique direction is the same as the oblique ejection direction of the inclined ejection block (3) by the ejector rod (9); the top of the core drawing body (5) penetrates through the inclined top block (3) and abuts against the bottom of the inclined top insert (4); when the inclined ejecting block (3) is ejected obliquely by the ejector rod (9) from bottom to top, the inclined ejecting block (3) is separated from the core pulling body (5).

2. The core pulling structure of the through hole in the pitched roof as claimed in claim 1, wherein the movable die insert (2) is provided with an inclined core pulling jack (21); the core pulling body (5) is obliquely inserted into the movable die insert (2) from bottom to top.

3. The core pulling structure of the through hole in the pitched roof as claimed in claim 1, wherein a product U-shaped cavity gap (6) is formed between the pitched roof insert (4) and the pitched roof insert cavity (31).

4. The core pulling structure of the through hole in the pitched roof as claimed in claim 3, wherein, a matching groove (41) is arranged at one side of the pitched roof insert (4); the inclined ejector block (3) is provided with a matching convex block (32) matched with the matching groove (41).

5. The core pulling structure of the through hole in the pitched roof according to claim 4, wherein the pitched roof insert (4) is horizontally and fixedly connected to the pitched roof block (3) through a connecting screw (7); the connecting screw (7) passes through the matching convex block (32) and is connected to the matching groove (41).

6. An injection mould, characterized by comprising a core pulling structure and a fixed mould (8) according to any one of claims 1 to 5; the fixed die (8) is matched with the movable die (1), and the fixed die (8) is positioned above the movable die (1); when the die is closed, a product cavity is formed between the fixed die (8) and the core-pulling structure.