CN216579025U

CN216579025U - Mechanical self-locking core-pulling structure

Info

Publication number: CN216579025U
Application number: CN202122968129.XU
Authority: CN
Inventors: 戴超; 梅青正; 袁俊; 徐振东
Original assignee: Jiangsu Xinquan Mould Co ltd
Current assignee: Jiangsu Xinquan Mould Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-05-24
Anticipated expiration: 2031-11-30

Abstract

The utility model discloses a mechanical self-locking core-pulling structure which comprises a core-pulling part, a pressing strip, a core-pulling fixing block, an oil cylinder fixing block, a core-pulling locking block, a spring and an oil cylinder. The mechanical self-locking core-pulling structure disclosed by the utility model adopts a mechanical inclined plane extrusion principle to move downwards, and is driven to move upwards by the bottom spring, so that the mechanical self-locking core-pulling structure has sufficient guidance, and the mechanical self-locking core-pulling structure is prevented from retreating in the injection molding process. Thereby very big reduction the hydro-cylinder and the big space problem of loosing core and occupying the mould.

Description

Mechanical self-locking core-pulling structure

Technical Field

The utility model relates to the field of automobile injection molds, in particular to a core-pulling structure.

Background

The common core-pulling structure is directly pulled by an oil cylinder (figure 1). The oil cylinder completes the core pulling action through the connecting block and the core pulling, the common mode can only be applied to small characteristics such as small holes, and the like, and the clamping line of the injection molded product is unstable and is easy to have waste products. By adopting the form, the size of the oil cylinder for selection is calculated according to the back-off amount of the product and the projection area of the product in the design of the reversing form, the injection pressure is larger when the projection area of the product is too large, the common reversing oil cylinder cannot be locked, the oil cylinder retreats during injection, the product has steps, the section is poor, and the product is scrapped. If a foreign self-locking oil cylinder is adopted, the price is high.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a mechanical self-locking core-pulling structure, which realizes self-locking through a mechanical mode and avoids the situation of backward movement caused by higher pressure in the injection molding process.

The utility model provides a mechanical type auto-lock structure of loosing core, is including loosing core, layering, the fixed block of loosing core, the hydro-cylinder fixed block, the latch segment of loosing core, the spring, the hydro-cylinder passes through T type groove one and is connected with the hydro-cylinder fixed block, looses core and is connected with the fixed block of loosing core through T type groove two, sets up the latch segment of loosing core below fixed block of loosing core and the hydro-cylinder fixed block, sets up the spring in the latch segment of loosing core.

The mechanical self-locking core-pulling structure disclosed by the utility model adopts a mechanical inclined plane extrusion principle to move downwards, and is driven to move upwards by the bottom spring, so that the mechanical self-locking core-pulling structure has sufficient guidance, and the mechanical self-locking core-pulling structure is prevented from retreating in the injection molding process. Thereby very big reduction the hydro-cylinder and the big space problem of loosing core and occupying the mould.

Drawings

Fig. 1 is a schematic view of a prior art structure.

Fig. 2 is a first schematic diagram of the present invention.

FIG. 3 is a second schematic of the present invention.

Fig. 4 is a sectional view a-a of fig. 3.

Fig. 5 is a third schematic of the present invention.

Fig. 6 is a sectional view B-B of fig. 5.

Fig. 7 is a fourth schematic of the present invention.

Detailed Description

Referring to fig. 2-5, a mechanical self-locking core-pulling structure comprises a core-pulling block 2, a pressing strip 3, a core-pulling fixed block 4, an oil cylinder fixed block 5, a core-pulling locking block 6, a spring 7, an oil cylinder 8, wherein the oil cylinder 8 is connected with the oil cylinder fixed block 5 through a T-shaped groove I, the core-pulling block 2 is connected with the core-pulling fixed block 4 through a T-shaped groove II, and finally the core-pulling block 3 and the core-pulling fixed block are installed and fixed in a mold. The core-pulling locking block 6 is arranged below the core-pulling fixed block 4 and the oil cylinder fixed block 5, and the spring 7 is arranged in the core-pulling locking block 6. The spring 7 is loaded into the core-pulling locking block 6 and loaded into the mould.

As shown in fig. 6 and 7, when the cylinder fixing block 5 is driven by the cylinder 8 to move downwards through the inclined surface to extrude the core-pulling locking block 6, the guide slide block is driven to complete the core-pulling action, so that the inverted buckle in the product 1 is withdrawn. When injection molding is carried out, the oil cylinder 8 moves forward by 11mm, and then the core-pulling locking block 6 moves upward under the driving of the force of the bottom spring 7, so that the core-pulling fixing block 4 is clamped, the mechanical self-locking effect is achieved, the retreating of the injection molding process is avoided, and the consistency of the core-pulling and wire-clamping states is ensured. The problem of occupy the mould space is solved, processing cost, purchasing cost are reduced.

Claims

1. The utility model provides a mechanical type auto-lock structure of loosing core, a serial communication port, including loosing core (2), layering (3), fixed block (4) of loosing core, hydro-cylinder fixed block (5), loose core locking piece (6), spring (7), hydro-cylinder (8) are connected through T type groove one and hydro-cylinder fixed block (5), loose core (2) are connected with fixed block (4) of loosing core through T type groove two, loose core locking block (6) are set up below fixed block (4) of loosing core and hydro-cylinder fixed block (5), set up spring (7) in loose core locking block (6).