CN223904462U - Forming die multiple liftout drawing of patterns structure - Google Patents

Abstract

The utility model discloses a multiple material ejection and demolding structure of a forming mold, which relates to the technical field of injection molds and comprises a base, a lower mold and an upper mold, wherein a first material ejection rod and a second material ejection rod are respectively arranged in the base in a sliding manner, a mold core is fixedly arranged in the lower mold, an outer forming mold core is movably arranged in the mold core, an inner forming mold core is movably arranged in the outer forming mold core, and the top ends of the second material ejection rod and the first material ejection rod are correspondingly connected with the outer forming mold core and the inner forming mold core. This forming die many times liftout drawing of patterns structure makes the product break away from the mould benevolence through pushing outer shaping mold core and interior shaping mold core earlier and the whole rising of product, promotes interior shaping mold core alone again and makes the product follow the inside twice liftout process that is pushed out of outer shaping mold core, has effectively avoided the product to take place because of once liftout atress is uneven deformation, rupture or damage problem, has shown the damaged risk of product reduced, has greatly improved the yields of product drawing of patterns.

Description

Forming die multiple liftout drawing of patterns structure

Technical Field

The utility model relates to the technical field of injection molds, in particular to a multiple ejection demolding structure of a forming mold.

Background

When the traditional forming die is demolded, a one-time ejection mode is generally adopted, namely, a single ejection rod is used for ejecting a formed product from the die. However, for some products that are complex in structure, thin in wall, or have special shapes, it is often difficult to make a single shot to ensure that the product leaves the mold intact. In the ejection process, the product may be deformed, broken or damaged due to uneven stress, so that the yield is reduced, and the rejection rate and the production cost are increased.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides a multi-ejection demoulding structure of a forming mould, which solves the problems of the prior art.

The forming die comprises a base, a lower die arranged on the upper portion of the base and an upper die arranged above the lower die, wherein a first ejection rod and a second ejection rod are respectively arranged in the base in a sliding mode, a die core is fixedly arranged in the lower die, an outer forming die core is movably arranged in the die core, an inner forming die core is movably arranged in the outer forming die core, the top end of the second ejection rod is connected with the outer forming die core, and the top end of the first ejection rod extends to the inner portion of the outer forming die core and is fixedly connected with the inner forming die core.

Further, an upper forming mold core is arranged in the upper mold, and the upper forming mold core, the outer forming mold core and the inner forming mold core can jointly form a forming structure of a product.

Further, the first ejector rod is in sliding connection with the outer forming die.

Further, the bottom ends of the first ejection rod and the second ejection rod are connected and fixed with a driving device of an external injection molding machine, and the driving device is an air cylinder or a hydraulic oil cylinder.

Further, the top end of the die core protrudes out of the top end of the lower die.

Further, the shape of the outer molding mold core is matched with that of the inner molding mold core, and the outer molding mold core and the inner molding mold core are attached to each other.

The utility model provides a multiple material ejection and demolding structure of a forming mold. Compared with the prior art, the method has the following beneficial effects:

This forming die many times liftout drawing of patterns structure makes the product break away from the mould benevolence through pushing outer shaping mold core and interior shaping mold core earlier and the whole rising of product, promotes interior shaping mold core alone again and makes the product follow the inside twice liftout process that is pushed out of outer shaping mold core, has effectively avoided the product to take place because of once liftout atress is uneven deformation, rupture or damage problem, has shown the damaged risk of product reduced, has greatly improved the yields of product drawing of patterns.

Drawings

FIG. 1 is a schematic diagram of a split structure of the present utility model;

FIG. 2 is a schematic view of a base structure according to the present utility model;

FIG. 3 is a schematic view of the whole process of ejecting the product according to the present utility model;

Fig. 4 is a half sectional view of the assembled utility model.

The drawing shows that the material is 1, a base, 11, a first ejection rod, 12, a second ejection rod, 2, a lower die, 21, a die core, 22, an outer forming die core, 23, an inner forming die core, 3, an upper die and 4, and a product.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a multiple ejection and demolding structure for a molding mold, which comprises a base 1, a lower mold 2 installed on the upper portion of the base 1, and an upper mold 3 located above the lower mold 2, wherein a first ejection rod 11 and a second ejection rod 12 are respectively slidably disposed in the base 1, a mold core 21 is installed and fixed in the lower mold 2, an outer molding core 22 is movably disposed in the mold core 21, an inner molding core 23 is movably disposed in the outer molding core 22, the top end of the second ejection rod 12 is connected with the outer molding core 22, and the top end of the first ejection rod 11 extends into the outer molding core 22 and is fixedly connected with the inner molding core 23.

An upper forming mold core is arranged in the upper mold 3, and the upper forming mold core, the outer forming mold core 22 and the inner forming mold core 23 can jointly form a forming structure of a product;

the first ejector rod 11 is in sliding connection with the outer forming die 22, the bottom ends of the first ejector rod 11 and the second ejector rod 12 are connected and fixed with a driving device of an external injection molding machine, and the driving device is preferably an air cylinder or a hydraulic oil cylinder;

The top end of the die core 21 protrudes out of the die core 21, the shape of the outer forming die core 22 is matched with that of the inner forming die core 23, and the outer forming die core 22 and the inner forming die core are attached to each other;

When the mold works, after the product 4 is molded and solidified outside the upper molding mold core and the outer molding mold core 22 and the inner molding mold core 23, the product 4 needs to be discharged, at the moment, the upper mold 3 and the lower mold 2 are opened, the product 4 is exposed in the environment, then the driving device of the external injection molding machine synchronously pushes the first material pushing rod 11 and the second material pushing rod 12 to rise, so that the whole of the outer molding mold core 22, the inner molding mold core 23 and the product 4 synchronously follows to rise, the product 4 at the moment can be separated from the mold core 21, then the driving device of the external injection molding machine singly pushes the first material pushing rod 11, so that the whole of the inner molding mold core 23 and the product 4 is pushed out from the inside of the outer molding mold core 22, at the moment, a worker or a manipulator directly takes down the product 4, the demolding of the product 4 can not be damaged through the two material pushing processes, and the yield is higher.

Claims (6)

1. A multi-ejection demolding structure for a molding die, characterized in that it includes a base (1), a lower die (2) installed on the upper part of the base (1), and an upper die (3) located above the lower die (2). A first ejector rod (11) and a second ejector rod (12) are slidably arranged in the base (1). A die core (21) is installed and fixed in the lower die (2). An outer molding die core (22) is movably arranged inside the die core (21). An inner molding die core (23) is movably arranged inside the outer molding die core (22). The top end of the second ejector rod (12) is connected to the outer molding die core (22). The top end of the first ejector rod (11) extends into the interior of the outer molding die core (22) and is connected and fixed to the inner molding die core (23). 2. The molding die with multiple ejection and demolding structure according to claim 1, characterized in that an upper molding core is installed inside the upper mold (3), and the upper molding core, the outer molding core (22), and the inner molding core (23) can together form the molding structure of the product. 3. The molding die multiple ejection and demolding structure according to claim 1, characterized in that the first ejector rod (11) and the outer molding die core (22) are slidably connected. 4. The molding die multiple ejection and demolding structure according to claim 1, characterized in that the bottom ends of the first ejector rod (11) and the second ejector rod (12) are both connected and fixed to the drive device of the external injection molding machine, and the drive device is a cylinder or a hydraulic cylinder. 5. The molding die with multiple ejection and demolding structure according to claim 1, characterized in that the top end of the mold core (21) protrudes from the top end of the lower mold (2). 6. The molding die multiple ejection and demolding structure according to claim 1, characterized in that the outer molding core (22) and the inner molding core (23) are adapted to each other in shape and fit together.