CN216465952U

CN216465952U - Injection mold with inverted ejector rod structure

Info

Publication number: CN216465952U
Application number: CN202122693526.0U
Authority: CN
Inventors: 吕宏贵; 张同斌
Original assignee: China Hualu Panasonic AVC Networks Co Ltd
Current assignee: China Hualu Panasonic AVC Networks Co Ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-05-10
Anticipated expiration: 2031-11-05

Abstract

The utility model discloses an injection mold with an inverted ejector rod structure, which is characterized in that: the mould include cover half mounting panel (1), one side of cover half mounting panel (1) has connected gradually stripper (2), runner plate (3), takes out backing plate (4) earlier, takes out board (5), ejector pin backing plate (6) and ejector pin fixed plate (7) earlier, the side of ejector pin fixed plate (7) still is provided with A board (8), the mould still includes square iron (9), one side setting of square iron (9) with B board (10) that A board (8) match, be provided with the cover half in A board (8) and insert, be provided with the movable mould in B board (10) and insert, the cover half insert and the movable mould insert and can form the die cavity jointly when the compound die, be provided with first arm-tie (11) between ejector pin fixed plate (7) and B board (10), be provided with second arm-tie (12) between stripper (2) and runner plate (3).

Description

Injection mold with inverted ejector rod structure

Technical Field

The utility model relates to the field of injection molding processing, in particular to an injection mold with an inverted ejector rod structure.

Background

Injection molding is a method for producing and molding industrial products, and is mainly realized by using a molding machine and a matched mold. The process is to inject a thermoplastic or thermoset into a mold to form plastic articles of various shapes. After the product is molded, the fixed mold part and the movable mold part of the mold are separated, the product is exposed in the air, and the ejector rod and the ejector pin mechanism arranged in the side of the movable mold are used for ejecting the product out of the cavity, so that demolding is realized. However, due to the special shape of some products, if the ejector pin mechanism is arranged in the movable mould side like a traditional mould, the situation that the products are difficult to demould can occur, and therefore, a method or a device capable of solving the problems is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides the injection mold with the inverted ejector rod structure, which is simple in structure, ingenious in design and reasonable in layout, can arrange the ejection mechanism on the fixed mold side and can smoothly realize ejection.

The technical solution of the utility model is as follows: the utility model provides an injection mold of ejector pin structure flip-chip which characterized in that: the die comprises a fixed die mounting plate 1, wherein one side of the fixed die mounting plate 1 is sequentially connected with an unloading plate 2, a runner plate 3, an early-drawing backing plate 4, an early-drawing plate 5, an ejector rod backing plate 6 and an ejector rod fixing plate 7, the side surface of the ejector rod fixing plate 7 is also provided with an A plate 8, the die further comprises square iron 9, one side of the square iron 9 is provided with a B plate 10 matched with the A plate 8, a fixed die insert is arranged in the A plate 8, a movable die insert is arranged in the B plate 10, the fixed die insert and the movable die insert can jointly form a die cavity when die assembly is carried out, a first pulling plate 11 is arranged between the ejector rod fixing plate 7 and the B plate 10, and a second pulling plate 12 is arranged between the unloading plate 2 and the runner plate 3,

a workpiece ejector rod 13 is arranged on the ejector rod fixing plate 7, an insert pin 14 and a slider seat ejector rod 15 are also arranged on the ejector rod cushion plate 6, the tail end of the slider seat ejector rod 15 is contacted with a slider seat 16, the slider seat 16 is connected in a slider seat groove 17 arranged on the A plate 8 in a sliding manner, a slider guide groove 18 is arranged in the slider seat 16, a core-pulling slider 19 is connected in the slider guide groove 18 in a sliding manner, an inclined guide post 20 is also fixedly arranged in the A plate, the inclined guide post 20 is connected with an inclined guide groove arranged on the core-pulling slider 19 in a sliding manner, the inclined guide post 20 is not interfered with the slider seat 16, a reset ejector rod 22 is connected on the B plate through a reset spring 21, and the positions of the reset ejector rod 22 and the slider seat 16 are matched with each other,

a damping bolt 23 is arranged between the ejector rod base plate 6 and the first drawing plate 5, an A plate spring 24 is further arranged between the ejector rod fixing plate 7 and the A plate 8, a limiting screw 25 is arranged between the discharging plate 2 and the runner plate 3, meanwhile, a guide column 26 is arranged on the discharging plate 2, the guide column 26 is matched with guide holes formed in the A plate 8 and the B plate 10, and a limiting column 27 matched with the A plate 8 is further arranged on the ejector rod fixing plate 7.

Compared with the prior art, the utility model has the following advantages:

this kind of structural style's ejector pin structure flip-chip injection mold, its simple structure, design benefit, rationally distributed, it is when carrying out the injection moulding operation of the work piece of some special shapes or structure to traditional injection mold, and the ejector pin structure that is located the movable mould side is difficult to realize the problem of smooth and easy ejecting action, designs a special structure. Firstly, the ejector rod structure is creatively designed on one side of the fixed mold part, and meanwhile, a special slide block structure is designed to realize core pulling action with a certain angle. The mold has the advantages of simple manufacturing process and low manufacturing cost, so the mold is particularly suitable for popularization and application in the field and has wide market prospect.

Drawings

FIG. 1 is a schematic view of a mold clamped state according to an embodiment of the present invention.

Fig. 2 to 6 are schematic diagrams of a mold opening process according to an embodiment of the utility model.

Fig. 7 is an enlarged view of a portion a in fig. 4.

Fig. 8 is an enlarged view of a portion B in fig. 6.

FIG. 9 is a schematic structural view of the ejector pin backing plate and the ejector pin fixing plate portion in the embodiment of the present invention.

FIG. 10 is a schematic structural diagram of each plate on the fixed die side in the embodiment of the utility model.

FIG. 11 is a schematic structural view of a slider seat portion (core slider not shown) in an embodiment of the present invention.

FIG. 12 is a schematic view of the structure of a slider housing portion (with a core slider) in an embodiment of the present invention.

Detailed Description

The following description will explain embodiments of the present invention with reference to the accompanying drawings. As shown in fig. 1 to 12: an injection mold with an inverted ejector rod structure comprises a fixed mold mounting plate 1, wherein one side of the fixed mold mounting plate 1 is sequentially connected with an unloading plate 2, a runner plate 3, a first-drawing backing plate 4, a first-drawing plate 5, an ejector rod backing plate 6 and an ejector rod fixing plate 7, the side surface of the ejector rod fixing plate 7 is also provided with an A plate 8, the mold further comprises square iron 9, one side of the square iron 9 is provided with a B plate 10 matched with the A plate 8, a fixed mold insert is arranged in the A plate 8, a movable mold insert is arranged in the B plate 10, the fixed mold insert and the movable mold insert can jointly form a cavity when the mold is closed, a first pulling plate 11 is arranged between the ejector rod fixing plate 7 and the B plate 10, and a second pulling plate 12 is arranged between the unloading plate 2 and the runner plate 3,

The working process of the injection mold with the inverted ejector rod structure provided by the embodiment of the utility model is as follows: when the die is closed, the fixed die core in the plate A8 and the movable die core in the plate B9 are enclosed together to form a die cavity, a forming machine fills molten materials into the die cavity, and the materials are cooled to form a product (as shown in figure 1);

after the product is molded, under the driving of the molding machine, the movable mold side moves towards the direction far away from the fixed mold side, under the action of the limiting screw 25 and the spring thereon, the space between the stripper plate 2 and the runner plate 3 is opened first, and at the moment, the material handle part in the runner is separated from the molded product (as shown in fig. 2);

then the A plate 8 and the B plate 10 are separated, namely, a parting surface is opened, the product is exposed in the air, and because the end part of the insert pin 14 is inserted into a cavity to be molded in the molding process, the insert pin 14 is connected with the product (inserted into the product) at the moment, namely, the product is left on the A plate 8 on the fixed mold side (as shown in figure 3);

the moving die side continues to move, when the limit distance of the first pulling plate 11 is reached, the space between the discharging plate 2 and the runner plate 3 is opened, the material handle remained in the runner is pulled out, and the action of removing the material handle is realized (as shown in fig. 4);

when the limit distance of the second pulling plate 12 is reached, the distance between the discharging plate 2 and the runner plate 3 is not increased any more, under the action of the pulling force, the a plate spring 24 arranged between the ejector rod fixing plate 7 and the a plate 8 is compressed (at this time, the meson on the guide post 26 blocks the movement of the a plate 8), that is, the ejector rod fixing plate 7 and the a plate 8 move in opposite directions, so that the slider holder ejector rod 15 connected to the ejector rod fixing plate 7 is ejected towards the moving die side (as shown in fig. 5), the slider holder ejector rod 15 moves against the slider holder 16, the slider holder 16 slides in the slider holder slot 17 to drive the core pulling slider 19 therein to move together relative to the a plate 8, because the inclined guide post 20 slidably connected to the core pulling slider 19 is fixedly connected to the a plate 8, when the core pulling slider 19 moves, the slider acts under the guiding action of the inclined guide post 20, and the core pulling action moves along the axial direction of the slider guide groove 18 where the core pulling slider 19 is located, thereby realizing the inclined side core-pulling action;

continuing the die sinking action, after the limiting column 27 is contacted with the A plate 8, making the first drawing plate 5 and the first drawing backing plate 4 unable to continue moving, when the pulling force is greater than the friction force of the damping bolt 23, the ejector rod backing plate 6 is separated from the first drawing plate 5, the workpiece ejector rod 13 arranged on the ejector rod fixing plate 7 is ejected, the product moves relative to the insert pin 14 and is separated from the insert pin 14, at this time, the product is completely demoulded (as shown in figure 6);

when the mold is closed again, when the pulling force given by the first pulling plate 11 is cancelled, the ejector rod cushion plate 6 and the ejector rod fixing plate 7, the first drawing plate 5 and the first drawing cushion plate 4 are ensured to return to the attaching state again and continue to reset under the action of the plate A spring 24, the reset ejector rod 22 can push the slider seat 16 back to the slider seat slot 17 again, and all mechanisms reset and return to the mold closing state shown in FIG. 1 to wait for the mold opening operation after the next injection molding.

Claims

1. The utility model provides an injection mold of ejector pin structure flip-chip which characterized in that: the die comprises a fixed die mounting plate (1), one side of the fixed die mounting plate (1) is sequentially connected with a stripper plate (2), a runner plate (3), an early-drawing backing plate (4), an early-drawing plate (5), an ejector rod backing plate (6) and an ejector rod fixing plate (7), the side surface of the ejector rod fixing plate (7) is also provided with an A plate (8), the die further comprises square iron (9), one side of the square iron (9) is provided with a B plate (10) matched with the A plate (8), a fixed die insert is arranged in the A plate (8), a moving die is arranged in the B plate (10), the fixed die insert and the moving die insert can jointly form a die cavity when the die is closed, a first pull plate (11) is arranged between the ejector rod fixing plate (7) and the B plate (10), and a second pull plate (12) is arranged between the stripper plate (2) and the runner plate (3),

a workpiece ejector rod (13) is arranged on the ejector rod fixing plate (7), an insert needle (14) and a sliding block seat ejector rod (15) are also arranged on the ejector rod base plate (6), the tail end of the sliding block seat ejector rod (15) is contacted with a sliding block seat (16), the sliding block seat (16) is connected in a sliding block seat groove (17) arranged on the A plate (8) in a sliding manner, a sliding block guide groove (18) is formed in the sliding block seat (16), a core pulling sliding block (19) is connected in the sliding block guide groove (18) in a sliding manner, an inclined guide pillar (20) is also fixedly arranged in the A plate, the inclined guide pillar (20) is connected with an inclined guide groove arranged on the core pulling sliding block (19) in a sliding manner, the inclined guide pillar (20) is not interfered with the sliding block seat (16), a reset ejector rod (22) is connected on the B plate through a reset spring (21), and the positions of the reset ejector rod (22) and the sliding block seat (16) are matched with each other,

the ejector rod base plate (6) and the first drawing plate (5) are provided with damping bolts (23), an A plate spring (24) is further arranged between the ejector rod fixing plate (7) and the A plate (8), a limiting screw (25) is arranged between the discharging plate (2) and the runner plate (3), meanwhile, a guide column (26) is arranged on the discharging plate (2), the guide column (26) is matched with guide holes formed in the A plate (8) and the B plate (10), and the ejector rod fixing plate (7) is further provided with a limiting column (27) matched with the A plate (8).